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  • General Chemistry  (4,667)
  • Inorganic Chemistry  (4,112)
  • Cell & Developmental Biology
  • Chemical Engineering
  • 2020-2024  (4)
  • 1925-1929  (8,949)
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  • 1
    facet.materialart.
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    Feature Papers in Eng 2022 (2023)
    MDPI - Multidisciplinary Digital Publishing Institute
    Details
    Publication Date: 2023-06-23
    Description: The aim of this second Eng Special Issue is to collect experimental and theoretical re-search relating to engineering science and technology. The general topics of Eng are as follows: electrical, electronic and information engineering; chemical and materials engineering; energy engineering; mechanical and automotive engineering; industrial and manufacturing engineering; civil and structural engineering; aerospace engineering; biomedical engineering; geotechnical engineering and engineering geology; and ocean and environmental engineering. Therefore, the following editorial is a selection of representative works of these topics.
    Keywords: &nbsp ; Environment Management ; Environmental Engineering ; Chemical Engineering ; Materials Engineering&nbsp ; bic Book Industry Communication::T Technology, engineering, agriculture::TB Technology: general issues ; bic Book Industry Communication::T Technology, engineering, agriculture::TB Technology: general issues::TBX History of engineering & technology
    Language: English
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  • 2
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    Quantification of bone surface textures: exploring a new method of ontogenetic ageing (2023)
    In:  Journal of Analytical Science and Technology vol. 14 no. 1
    Details
    Publication Date: 2024-02-26
    Description: Identifcation of ontogenetic age classes plays an important role in the felds of zoology, palaeontology and archaeology, where accurate age classifcations of (sub)fossil remains are a crucial component for the reconstruction \nof past life. Textural ageing\xe2\x80\x94the identifcation of age-related bone surface textures\xe2\x80\x94provides a size-independent \nmethod for age assessment of vertebrate material. However, most of the work so far is limited to qualitative results. \nWhile qualitative approaches provide helpful insights on textural ageing patterns, they are heavily subject to observer \nbias and fall short of quantitative data relevant for detailed statistical analyses and cross-comparisons. Here, we present a pilot study on the application of 3D surface digital microscopy to quantify bone surface textures on the long \nbones of the grey heron (Ardea cinerea) and the Canada goose (Branta canadensis) using internationally verifed \nroughness parameters. Using a standardised measuring protocol, computed roughness values show a strong correlation with qualitative descriptions of textural patterns. Overall, higher roughness values correspond to increased numbers of grooves and pits and vice versa. Most of the roughness parameters allowed distinguishing between diferent \nontogenetic classes and closely followed the typical sigmoidal animal growth curve. Our results show that bone \ntexture quantifcation is a feasible approach to identifying ontogenetic age classes.
    Keywords: General Physics and Astronomy ; General Environmental Science ; General Biochemistry ; Genetics and Molecular Biology ; General Materials Science ; General Chemistry ; Roughness ; Surfaces ; Taphonomy ; Topography ; Bone ; Ontogeny ; Digital microscopy
    Repository Name: National Museum of Natural History, Netherlands
    Type: info:eu-repo/semantics/article
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  • 3
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    Integrated Chemical Processes in Liquid Multiphase Systems (2022)
    De Gruyter | De Gruyter
    Details
    Publication Date: 2024-04-05
    Description: The essential principles of green chemistry are the use of renewable raw materials, highly efficient catalysts and green solvents linked with energy efficiency and process optimization in real-time. Experts from different fields show, how to examine all levels from the molecular elementary steps up to the design and operation of an entire plant for developing novel and efficient production processes.
    Keywords: Process Engineering ; Chemical Engineering ; Technical Chemistry ; thema EDItEUR::P Mathematics and Science::PN Chemistry ; thema EDItEUR::R Earth Sciences, Geography, Environment, Planning::RN The environment ; thema EDItEUR::R Earth Sciences, Geography, Environment, Planning::RN The environment::RNU Sustainability ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TD Industrial chemistry and manufacturing technologies::TDC Industrial chemistry and chemical engineering ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TG Mechanical engineering and materials::TGM Materials science ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TQ Environmental science, engineering and technology
    Language: English
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  • 4
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    Frontiers in Chemistry: Rising Stars (2021)
    Frontiers Media SA
    Details
    Publication Date: 2024-04-04
    Description: The Frontiers in Chemistry Editorial Office team are delighted to present the inaugural “Frontiers in Chemistry: Rising Stars” article collection, showcasing the high-quality work of internationally recognized researchers in the early stages of their independent careers. All Rising Star researchers featured within this collection were individually nominated by the Journal’s Chief Editors in recognition of their potential to influence the future directions in their respective fields. The work presented here highlights the diversity of research performed across the entire breadth of the chemical sciences, and presents advances in theory, experiment and methodology with applications to compelling problems. This Editorial features the corresponding author(s) of each paper published within this important collection, ordered by section alphabetically, highlighting them as the great researchers of the future. The Frontiers in Chemistry Editorial Office team would like to thank each researcher who contributed their work to this collection. We would also like to personally thank our Chief Editors for their exemplary leadership of this article collection; their strong support and passion for this important, community-driven collection has ensured its success and global impact.
    Keywords: Green and Sustainable Chemistry ; Analytical Chemistry ; Theoretical and Computational Chemistry ; Polymer Chemistry ; Medicinal and Pharmaceutical Chemistry ; Organic Chemistry ; Nanoscience ; Catalysis and Photocatalysis ; Supramolecular Chemistry ; Electrochemistry ; Inorganic Chemistry ; Chemical Biology ; thema EDItEUR::P Mathematics and Science::PD Science: general issues
    Language: English
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  • 5
    Electronic Resource
    Electronic Resource
    Studies in the origin of yolk. IV. Ogenesis of Periplaneta americana (1929)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 48 (1929), S. 253-279 
    Details
    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: Technique. This work is based not only on the fixed preparations, but also on fresh cover-slip preparations treated with neutral red or 2 per cent osmic acid for a short time.Golgi elements and fatty yolk. The Golgi elements are hollow vesicular bodies with a distinct osmiophilic rim and a central osmiophobic substance. In the youngest oocyte they form a circumnuclear ring. Gradually the vesicles spread out, grow in size, store up fat in their interior, and give rise to the fatty yolk. On account of their higher refractive index, due to the presence of fat, the Golgi vesicles can be occasionally seen even in the young oocytes without any treatment.Mitochondria. The mitochondrial granules also form a circumnuclear ring and are later distributed uniformly.Albuminous yolk. The albuminous yolk is nucleolar in origin. Early in oogenesis, the nucleous buds off small, homogeneous, and highly chromatic particles in the cytoplasm, which sooner or later disappear. Subsequently, the nucleolus becomes less chromatic and develops vacuolar bodies in its interior, which, becoming vacuolated exactly like the parent nucleolus, migrate into the the cytoplasm. These bodies become more and more chromatic and travel toward the periphery of the egg, where they grow in size. Ultimately they break down into small, homogeneous, and highly chromatic bodies which are the definitive albuminous yolk spheres and which subsequently grow enormously in size.
    Additional Material: 25 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jmor.1050480109
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  • 6
    Electronic Resource
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    Maturation of the male germ cells in the ratAided by grants from the Committee for Research in Problems of Sex of the National Research Council, administered by Prof. Herbert M. Evans, to whom the author is greatly indebted. (1929)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 48 (1929), S. 433-443 
    Details
    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: Maturation of the male germ cells in the rat shows some slight modifications of the typical procedure in sex cells, a distinct and rather prolonged synapsis occurring before synizesis and a confused stage immediately after it. The clumping in synizesis is not extreme. In the mixed strain of rats both twenty-one and thirty-one tetrads appear in the late diakinesis. This procedure in the male resembles the maturation of the oocytes in only two points, the beginning of the process, the deutobroch nuclei, and the end of it when the haploid number of chromosomes take their places on the spindle.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jmor.1050480206
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  • 7
    Electronic Resource
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    Some phases in the embryonic development of Diacrisia virginica fabr. (Lepidoptera) (1929)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 48 (1929), S. 493-541 
    Details
    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: The cells of the blastoderm which are to form the serosa are two- to four-nucleate; the smaller cells of the embryonic rudiment, uninucleate. The band-like embryonic rudiment encircles the yolk at the equator of the egg. The amnion does not begin to form until after the serosa completely covers embryo and yolk. The epithelium of the midgut arises from cells situated at the tips of stomodaeum and proctodaeum. These cells, though not differentiated from adjacent ectoderm at the time of the invagination, are nevertheless interpreted as part of the preprimordium of the endoderm. In the eighty-four-hour stage a fold of amnion grows over the dorsal side of the embryo, entirely covering it in the course of the next few hours. A portion of the amnion thus forms the dorsal wall of the embryo. At the completion of the amnion the embryo rotates so that its ventral side is directed toward the egg center. The amnion raptures just before the larva begins to feed on the yolk which still remains around it. The serosa is consumed before hatching, which takes place about five and one-half days after deposition.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jmor.1050480209
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  • 8
    Electronic Resource
    Electronic Resource
    A histological study of the colic caeca in the bantam fowl (1929)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 48 (1929), S. 585-609 
    Details
    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: The caeca of fourteen bantam fowls have been studied. These fowls ranged in age from six days' incubation to three years after hatching. Between the fifth and sixth days of incubation rectal caeca arise as evaginations from the intestine at the junction of the ileum with the colon. The develoing caeca closely resemble histologically the intestine to which they are attached.The caeca are essentially devoid of content until about the nineteenth day of incubation, but during the remaining days of incubation are gorged with a bluish-gray material similar to that found in the colon. Thus, an early defecatory function is indicated.In general, the proximal third of the caeca remains histologically similar to the intestine, but the distal two-thirds undergoes regression. The latter involves the atrophy of the epithelium and glands, accompanied by the appearance of lymphoid tissue. Much of the lymphoid tissue eventually disappears, to a large extent by atrophy and dissolution of the leukocytes. However, to some extent, lymphocytes develop into granulocytes which escape with other leukocytes into the lumina of the caeca and there disintegrate.Lymph nodules begin to appear in the caeca about one week after the chick hatches. The leukocytes, at least in part, arise in situ from the reticular stroma. Eosinophils arise in certain areas of the tunica propria, and in the earlier stages of their development resemble large lymphocytes, in the cytoplasm of which basophilic, amphophilic, and acidophilic granules are intermingled.
    Additional Material: 3 Ill.
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    URL: http://dx.doi.org/10.1002/jmor.1050480212
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  • 9
    Electronic Resource
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    The ovarian chromosome cycle in a mixed rat strainAided by grants from the Committee for Research in Problems of Sex of the National Research Council, administered by Prof. Herbert M. Evans, to whom the author is greatly indebted. (1929)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 48 (1929), S. 445-473 
    Details
    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: In the ovary of the rat the ova arise by proliferations from the germinal epithelium, all cells of which are potential ova. This proliferation begins with the differentiation of the gonad, and may last as long as 369 days postpartum. The embryonic ovary is filled with ova which pass through the typical maturation phases. This continues until five days after parturition. These ova degenerate, none being found in the ovary of the twenty-day rat. After the fifth day postpartum, nuclear development in the ova changes until, by the twentieth day, no typical maturation phases are present. With the degeneration of the embryonic ova the ovary takes on the adult structure.The ovary of the adult female rat shows a modified type of meiosis in the germ cells, while that of the embryo shows the typical phases, indicating that this is the primitive type, with the modified form an acquired characteristic.Ova in a single rat may show both twenty-one and thirty-one chromosomes.Follicle cells are formed from the cells of the germinal epithelium and, like the sex cells, may have both forty-two and sixty-two chromosomes in a single follicle. The lutein cells also show both forty-two and sixty-two chromosomes in a single corpus luteum. The chromosomes of the lutein cells enlarge with the expansion of the cell to a size greatly in excess of the chromosomes of the somatic cells. The theca interna is derived from the tunica albuginea.
    Additional Material: 3 Ill.
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    URL: http://dx.doi.org/10.1002/jmor.1050480207
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  • 10
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    The history of the chromosomal vesicles in the segmenting egg of cryptobranchus allegheniensis (1929)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 47 (1929), S. 89-133 
    Details
    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: During the telophases each chromosome becomes inclosed in an individual sac or vesicle which, together with its contents, is called a chromosomal vesicle. The vesicular membrane is of cytoplasmic origin, but is formed under the influence of the chromosome and a droplet of karyolymph. A precise numerical correspondence between chromosomes and chromosomal vesicles has not been established, but it is evidence that most, if not all, of the chromosomal vesicles retain their individuality during the resting stage and until after the new chromosomes have been fully formed.The transformation of the telophase chromosome into the reticulum of the resting stage and the manner in which a new chromosome is formed from a portion of this reticulum are described in detail. In the early prophases each developing chromosome is embedded in a sheath or matrix of less deeply basophilic material, which disappears before the middle prophase is reached.The formation of chromosomal vesicles is interpreted as a device for doing more rapidly and effectively, under stress of special circumstances, the work that the nucleus must accomplish during the so-called resting stage.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jmor.1050470104
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  • 11
    Electronic Resource
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    Masthead (1929)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 47 (1929) 
    Details
    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jmor.1050470201
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  • 12
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    The significance of the ultimobranchial body (postbranchial body, suprapericardial body): A comparative study of its occurrence in urodeles (1929)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 47 (1929), S. 283-333 
    Details
    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: The significance of the ultimobranchial body has been the object of a comparative study of the structure in twenty-four species of urodeles. In nineteen of these it has not hitherto been described.Caudal to the last branchial arch, it develops as a thickening and later as an outpushing from the ventral wall of the pharynx. Due to the growth mechanics of the region, it comes to lie obliquely to the pharynx, ventral to it, and dorsal or dorsolateral to the pericardial cavity in its anterior region. It persists throughout life as an epithelioid or epithelial structure, usually of irregular shape, frequently containing vesicles; in some cases it exhibits a considerable amount of secretory activity of variable quality. Except in Amphiuma and Necturus, where it is regularly paired, and in occasional instances in individuals of other species, where it occurs on both sides, it is usually present on the left side only. Its occurrence is constant in all of the species of urodeles for which it has been examined.It is variable in size, form, and position. This, together with the quite inconstant indication of secretory activity, marks it as a structure of little or no physiological significance. ‘Colloid’ is, however, present in some instances, and hence a comparison with the thyroid was considered.
    Additional Material: 2 Ill.
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    URL: http://dx.doi.org/10.1002/jmor.1050470202
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  • 13
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    The leucocytes and leucocytopoietic organs of an oligochaete, pheretima indica (Horst) (1929)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 47 (1929), S. 435-478 
    Details
    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: The perivisceral fluid of Pheretima indica (Horst) contains five types of leucocytes: lymphocytes, monocytes, granulocytes, lamprocytes, and linocytes. The granulocytes differentiate either from free lymphocytes, from peritoneal epithelial cells lining the leucocytopoietic organs, or from lymphocytes (hemocytoblasts) embedded in these organs. The lymphocyte is a hemocytoblast. The eosinophilic granulocyte is the most numerous of the several types of granulocytes. Morphologically and tinctorially, it resembles the eosinophil of fishes. The eosinophil granule is thought to arise either by a ripening of a basophil granule and to pass through a metachromatic phase during this process, or by being formed immediately without such a ripening process in small hemocytoblasts. The stimulus for the excessive production of eosinophils is thought to be the degree of infection of the leucocytopoietic organs by a species of the gregarine, Monocystis.A series of segmentally arranged leucocytopoietic organs is described for the first time in the oligochaetes. These organs are essentially foldings of the septa and offer sacculations in which leucocytopoiesis may take place.A discussion of the possible phylogeny of the hemocytopoietic organs of the invertebrates and vertebrates is given.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jmor.1050470205
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  • 14
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    The spermatogenesis of lebistes reticulatus (1929)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 47 (1929), S. 555-587 
    Details
    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: The germ cells of Lebistes are found in cysts; the younger cysts are toward the cortex. Mitochondria and Golgi apparatus are present. During maturation leptotene, bouquet, pachytene, and diakinesis figures are seen. The spermatocyte chromosomes number twenty-three; an X-Y pair is probably present, though the evidence is not conclusive. In spermatid formation the centriole divides to form a rodlet and an axial filament; the nucleus segregates into two materials, one of which is extruded; the remainder first contracts to a cup, comes in contact with the rodlet, then again forms a sphere. The mitochondria are arranged along the proximal part of the axial filament; the sphere flattens and elongates; the rodlet sinks into the head substance and is enfolded by it. The Golgi remnant is sloughed off with the residual cytoplasm, which disappears at the same time the Sertoli cells show an increase in size, suggesting their ingestion of the spermatid remnants. The mature sperm form spermatozeugmen, which are stored in the testicular canal; they are transferred to the female by aid of the modified anal fin.
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    URL: http://dx.doi.org/10.1002/jmor.1050470210
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  • 15
    Electronic Resource
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    The embryological basis of size inheritance in the rabbit (1929)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 48 (1929), S. 81-103 
    Details
    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: A comparative study of the embryology of the rabbit in races of large and small adult size shows a consistently more rapid rate of cell multiplication and of increase in mass in large-race embryos than in those of small race.This more rapid rate of growth is transm tted by and influenced equally by sperm and egg cell, as is shown by the results of reciprocal crosses.Rate of differentiation is independent of rate of growth and unaffected by it. Consequently, embryos of the large race have attained greater size than those of the small race at corresponding stage of differentiation.The fundamental difference in rate of growth is already in evidence in forty-eight-hour embryos and becomes increasingly clear at later stages. Embryos produced by the large race have undergone about one more cell division at forty-eight hours after mating and so are approximately in the thirty-two-cell stage when embryos of the small race are in the sixteen-cell stage.
    Additional Material: 2 Tab.
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    URL: http://dx.doi.org/10.1002/jmor.1050480104
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  • 16
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    On the development of imaginal buds in normal and mutant Drosophila melanogaster (1929)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 47 (1929), S. 135-199 
    Details
    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: Definite information concerning the time of development and location of the different imaginal discs of Drosophila melanogaster was needed in order to interpret especially the gynandromorphs, mosaics, and intersexes that have been extensively reported in cultures of this fly. This information was also desirable for many of the mutant types. It was not known, for example, when an organ was reduced or absent, whether its imaginal disc showed a corresponding reduction, or whether it was full size in the larvae and pupae, and failed to carry through to the later stages.Three mutant types with eyes smaller than those of the wild type, namely, lozenge, bar, and eyeless, were examined. It was found that there is a corresponding difference in size as far back as the imaginal disc could be detected. Similarly for the two mutants, vestigial and no-wing. Conversely for the mutant, bithorax, in which the metathorax is larger than the normal and has assumed many of the characters of the normal mesothorax, the imaginal disc was correspondingly enlarged.It follows that the effects of the mutant genes for these characters can be observed in the very earliest condition of the imaginal disc.
    Additional Material: 2 Ill.
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    URL: http://dx.doi.org/10.1002/jmor.1050470105
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  • 17
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    The influence of thyroid deficiency on the structure and epinephrin content of the adrenal gland of the albino rat (Mus norvegicus albinus) (1929)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 48 (1929), S. 45-79 
    Details
    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: It was found that thyroid deficiency in the albino rat (Mus norvegicus albinus) is followed by a trend to increased concentration of epinephrin in the suprarenals. The basis of this lies in the relatively greater retrogression of the cortex as contrasted with the medulla which becomes a relatively greater proportion of the organ as a whole. Confirmatory evidence is found in cell counts per unit area and the part of the disappearance of lipoid from the cortical cells of the suprarenals of thyroidless animals.
    Additional Material: 5 Tab.
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    URL: http://dx.doi.org/10.1002/jmor.1050480103
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  • 18
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    Growth and maturation in the parthenogenetic and sexual eggs of Moina macrocopa (1929)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 48 (1929), S. 123-151 
    Details
    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: From a study of over 1000 mothers, the female chromosome number appears to be 2N = 22; N = 11. The male number has not been exactly determined, but is presumably not haploid. Only one maturation division occurs in the parthenogenetic egg, and the authors have seen only one in the sexual egg. During the growth stages of the eggs, the chromatin is totally obscured by a large amount of deeply staining nucleolar material which exhibits several phases. Ultimately, this material is apparently absorbed into the ooplasm. Just before the egg is laid, the ovoid chromosomes, in late prophase or in metaphase, are seen in a germinal vesicle situated always at one side of the egg. The maturation division occurs immediately after egg laying. A degenerate body, hitherto undescribed, is noted in the ripe parthenogenetic egg, situated at the pole opposite the germinal vesicle. It is believed to arise by reorganization of nucleolar substance. The body in the sexual egg desribed by Weismann and Ishikawa ('91) as the Paracopulationzelle is noted and its interpretation by these authors questioned, but, for lack of sufficient evidence, no counter-explanation is offered. The possible relation between experimental sex control and the time of maturation division in the parathenogenetic egg is discussed.
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    URL: http://dx.doi.org/10.1002/jmor.1050480106
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  • 19
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    Binary fission in the amoeboid and flagellate phases of tetramitus rostratus (Protozoa) (1929)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 47 (1929), S. 37-87 
    Details
    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: The vesicular nucleus of this amoeboflagellate is similar in structure in both phases of its life-cycle. It has a fairly large caryosome surrounded by a pericaryosomal area in which there are small oxyphilic pericaryosomal granules on a fine reticulum. On the inner surface of the definite caryotheca is a layer of epithecal chromatic granules.Nuclear division is similar in both amoeba and flagellate phases. During the prophase the nucleus enlarges, and the expanded caryosome becomes resolved into basophilic and oxyphilic components and assumes either an oblong, dumb-bell, or spindle shape. The pericaryosomal granules enlarge, shift about, and eventually become arranged in an equatorial band around the elongated caryosome. In the metaphase the equatorial plate of chromosomes appears after the inward migration of the pericaryosomal granules, accompanied by the formation of a definite intranuclear spindle, usually with polar masses, polar granules, and a centrodesmose. After the poleward migration of the daughter plates of chromosomes in the anaphase, the telophase constriction of the nuclear membrane produces two daughter nuclei with a portion of the spindle remaining outside. The epithecal layer of granules remains in place on the nuclear membrane during the entire process of mitosis. Plasmotomy normally follows mitosis, but may be delayed, giving rise to multinucleate individuals. In the flagellate the blepharoplast usually divides simultaneously with, but independently of, the nucleus. There are many divergences in the details of mitosis, but these are thought to be variations of one type of division rather than examples of different processes.
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    Cytological studies on the spinning glands of platyphylax designatus walker (Trichoptera): Respective rôles played by the nucleus and the golgi apparatus during secretion (1929)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 47 (1929), S. 261-281 
    Details
    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: In sections the protoplasm of the spinning gland of Platyphylax designatus Walker appears to be a syncytium with large, branching nuclei, which contain both nucleoli and chromatin granules embedded in a delicate linin reticulum.In the normal gland the nucleus is sharply marked off by a nuclear membrane from the granular, homogeneous cytoplasm. The Golgi apparatus appears as rings, loops, or comma-like structures, evenly distributed and without orientation to the nucleus or lumen of the gland.The nucleoli first increase both in number and size within the nucleus, then migrate out into the cytoplasm, where they undergo further growth, and finally are dissolved and passed out into the lumen of the gland as liquid secretion.Small vacuoles appear near the periphery of the gland in early periods of activity.In glands active for forty-eight hours all stages of the secretory process may be seen.In glands active for longer periods only vacuoles are present which we interpret as the remains of the secretory inclusions. There is a progressive decrease in the nuclear content of the nucleus.Throughout the activity of the gland the Golgi apparatus changes little from the normal condition, both in form and distribution. As activity progresses, the bodies become smaller and slightly more dispersed. No relation of Golgi apparatus to the secretory phenomenon is apparent.
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    The chromosome cycle in the rotifer asplanchna amphoraStudies from the Zoölogical Laboratory, The University of Nebraska, no. 159. (1929)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 47 (1929), S. 415-433 
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    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: The diploid number of twenty-six chromosomes was found in the mature parthenogenetic female-producing eggs and also in the somatic cells of the female embryos developing from such eggs. In the maturation stages of a few of these eggs the chromosomes were markedly larger than in the corresponding stages of the majority of the eggs. Whether this size difference of the chromosomes is correlated with male- and female-producing individuals has not been determined. The mature parthenogenetic male-producing eggs contain the haploid number of thirteen chromosomes, and this number was found also in the somatic cells of the young male embryos. The mature sexual eggs contain thirteen chromosomes.In spermatogenesis the secondary spermatocyte divisions are usually omitted and the secondary spermatocytes develop directly into the motile spermatozoa containing thirteen chromosomes. A few, however, of the secondary spermatocytes divide, forming spermatids containing fewer than thirteen chromosomes. These cells develop into the non-motile and rudimentary spermatozoa.The motile spermatozoa containing thirteen chromosomes unite with the parthenogenetic male-producing eggs containing thirteen chromosomes, thus producing the fertilized eggs with the diploid number of twenty-six chromosomes. These fertilized eggs develop into female-producing females which reproduce parthenogenetically.
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    The anatomical qualities of the liver during the various stages of its functional activities (1929)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 47 (1929), S. 519-529 
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    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: The liver has a rhythmic function with alternating assimilatory and secretory stages. The height of the assimilatory stage in rabbit's liver is characterized by the following qualities: All the cells are usually expanded and contain much glycogen and few bile components. The bile capillaries are narrow and generally empty. The glycogen content is high (about 13 per cent); the total glycogen weight is also high (about 17 grams). The liver has a relatively heavy weight (about 140 grams), a large volume, notably firm consistency, and a light brown color.The secretory stage at its height has the following characteristics: All cells are shrunken and are rich in bile components, but contain little glycogen. The bile capillaries are expanded and filled with secretion (fixation with barium chloride). The glycogen content is low (about 1 per cent), and the total glycogen weight is also low (about 1/2 gram). Weight of liver low (about 50 grams). Volume small and consistency fairly flaccid. Color dark reddish brown.Between these two extremes are various intermediary stages. Such variations as these probably occur during the normal functioning of the liver in man and also in other animals.
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    A histological study of the parathyroids in the Anura (1929)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 48 (1929), S. 1-43 
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    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: The parenchymal cells in the parathyroids of Rana catesbeiana (Shaw) are found to undergo a very curious cyclic change. The cytoplasm is broken down by a process of cytolysis. The nuclei are decomposed by chromatolysis and pycnosis. The entire parenchyma is finally liquefied, except for a layer of cells lining the capsule.The parathyroid body is reconstructed by young cells which are produced from rather definite growth centers. The process of regeneration begins some time before cytolysis is completed and continues until the entire organ is restored.The cytolytic and regenerative processes transpire in such sequence that the amount of apparently healthy tissue present at any one time is a rather large portion of the total mass normally present.The relationship between the parenchymal tissue and the stroma of the parathyroid is described.
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    Studies of parajulid diplopods. I. The development of the external sexual structures of Parajulus impressus say(8) (1929)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 48 (1929), S. 153-171 
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    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: A description of the gross embryology of the sex apparatus of a common diplopod, the corn millipede. The life-cycle of this animal involves eleven instars extending over a period of three years.In the male the true first legs are shed at the ninth ecdysis and the large clasping appendages are substituted through the last three instars. In the region of the second body somite the fused coxal plate and the penes are developed at the final molt; the second appendages are reduced at this time. The greatest changes occur in the region of the seventh somite, where the legs are shed about the eighth ecdysis and the gonopods developed through the remaining instars. It is evident that these gonopods arise as a modification of the sternites of the seventh somite.In the female the second legs are reduced to vestiges at the final molt. The structures at the mouth of the oviducts are developed from the surrounding tissues and the modified sternites of the reduced second legs. These changes are in progress as early as the seventh instar, but the greatest changes occur at the final ecdysis.
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    On the arterial system of the lizard Uromastix hardwickii (1929)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 48 (1929), S. 281-316 
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    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: The arterial system of Uromastix hardwickii retains many primitive features and shows great resemblance and relationship to that of Sphenodon. The heart is typically reptilian. Two systemics and a pulmonary arch arise from the ventricle. The conus arteriosus is absent. The carotids arise together from the right systemic by means of a small common carotis primaria. A very well-developed ductus caroticus connects each carotid with the systemic arch of its side. The ductus arteriosus (ductus Botalli) is absent.The dorsal aorta is formed by the union of both the systemic arches. The left systemic joins entire while the right one, which is termed systemicocarotid trunk, gives off the carotids, the vertebral, a single subclavian, and two pairs of parietal arteries, before the union. Anterior epigastric arteries are altogether absent. The dorsal aorta gives off fifteen pairs of parietal arteries which are segmentally arranged. All the main branches supplying the alimentary canal and other viscerala organs arise independently of one another, there being no such combination as is found in Varanus.
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    The effects of the substratum, divalent and monovalent cations on locomotion in Amoeba proteusFrom the Zoölogical Laboratories of The Johns Hopkins and Duke Universities. (1929)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 48 (1929), S. 371-383 
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    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: The rate of locomotion in Amoeba proteus is dependent upon the nature of the substratum, the nature of the different divalent and monovalent cations present, and the ratio of the amount of the monovalent cations to the amount of calcium or strontium. Calcium is more efficient than strontium in antagonizing potassium. Magnesium and barium do not antagonize potassium. The four monovalent cations studied in antagonizing calcium are efficient in the following order: Na〉K〉Li〉Rb. Calcium and potassium are more effective against antagonistic cations when combined with chlorine than when combined with phosphate.
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    The parietal fossa and related structures in the plagiostome fishes (1929)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 48 (1929), S. 543-561 
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    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: The parietal fossa or pit is situated in the middorsal line between the ear capsules. From its floor four (sometimes only two) apertures lead into the ear capsules. The anterior apertures are the foramina of the endolymphatic ducts; the posterior ones are the fenestrae. Through the fossa each endolymphatic duct passes from its formen to its external aperture in the dorsal integument, describing in its course a loop with the convexity directed anteriorly. The part of the duct involving the loop is enlarged into an endolymphatic pouch. Into the angle of this loop a small muscle is inserted which is a continuation of the anterior trunk muscles, or one taking a more lateral origin from the edge of the fossa. The fenestra may or may not be closed by a definite fenestral membrane. The posterior semicircular canal (posterior utriculus) bears a peculiar relation to the fenestra. The endolymphatic pouch, like the sacculus, contains otoconia, and sometimes siliceous sand grains. Various functions have been assigned to the endolymphatic organ. There is no convincing experimental evidence as to its significance.
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    The origin of neutral fats from the Golgi apparatus of the spermatid of the dog (1929)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 48 (1929), S. 611-625 
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    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: By the use of a new technique it was possible to demonstrate the Golgi granules about the idiosome of spermatids and in the so-called Golgi bead of the mature spermatozoon. Other osmiophile granules in the cytoplasm, assumed to be Golgi granules, aggregate during metamorphosis into groups which formed neutral fat spheres, giving stains with both sudan III and scharlach R. Evidence is adduced supporting the view that the Golgi apparatus is a lipin and probably a phospholipin. The fat spheres produced are probably a result of fatty degeneration in the residual body of the spermatid. They may also serve as the source of lipin in Popa's ‘Lipo-gel’ phenomenon.
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    Gleichgewichte zwischen Metallen und Salzen im Schmelzfluß Nr.12. Über die Verschiebungen des Schmelzgleichgewichts Cd + PbCl2 ⇄ Pb + CdCl2 durch Zusätze zur Metallphase (1929)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 177 (1929), S. 1-12 
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    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
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    Beiträge zur Kenntnis der schwefligen Säure und ihrer Salze. VI. Über die Selbstzersetzung wäßriger Bisulfitlösungen (1929)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 177 (1929), S. 17-41 
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    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
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    Über Das reziproke Salzpaar MgSO4—Na2(NO3)2—H2O. II (1929)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 177 (1929), S. 71-85 
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    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 8 Ill.
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    Über die Konstitution von Natriumplumbat (1929)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 177 (1929), S. 109-115 
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    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 1 Ill.
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    Entropie und Schwingungszahl von Elementen (1929)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 177 (1929), S. 116-118 
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    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
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    URL: http://dx.doi.org/10.1002/zaac.19291770112
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    Über die Oxydationsgeschwindigkeit von Bromwasserstoff mittels Chromsäure in Gegenwart von Salzen (1929)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 177 (1929), S. 137-144 
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    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
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    Beitrag zur Kenntnis der Molybdate und Wolframate. Die binären Systeme: Li3MoO4—MoO3, Na2MoO4—MoO3, K3MoO4—MoO3, Li2WO4—WO3, Na2WO4—WO3, K2WO4—WO3, Li2MoO4—Na2MoO4, Li2WO4—Na2WO4, Li2MoO4—K2MoO4 (1929)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 177 (1929), S. 145-186 
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    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Das einfache Molybdat und Wolframat des Lithiums kristallisiert aus wäßriger Lösung und aus der Schmelze wasserfrei in Kristallen, die der trigonalen Symmetrieklasse angehören.
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    Beiträge zur Kenntnis des Komplex-chemischen Verhaltens des Lithiums. 1. Mitteilung. Die Systeme Lithium-Halogenid, Mono-Di- und Trimethylamin (1929)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 178 (1929), S. 177-201 
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    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 16 Ill.
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    Haftfestigkeit und Raumbeanspruchung organischer Liganden in Molekülverbindungen (1929)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 178 (1929), S. 202-212 
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    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
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    Gleichgewichtsstudien an den Systemen Co—S—O und Ni—S—O (1929)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 178 (1929), S. 225-251 
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    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
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    Die Dielektrizitätskonstante des flüssigen Fluorwasserstoffs (1929)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 178 (1929), S. 272-274 
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    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
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    URL: http://dx.doi.org/10.1002/zaac.19291780119
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    Über gemischte Oxalato-fluoro- usw. -anionen des dreiwertigen Chroms, Eisens, Antimons und Wismuts (1929)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 178 (1929), S. 275-288 
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    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
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    URL: http://dx.doi.org/10.1002/zaac.19291780120
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    Über Thoriumformiate (1929)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 178 (1929), S. 157-176 
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    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 1 Ill.
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    Eine neue Art komplexer Platinverbindungen. Drei- und fünfwertiges Platin (1929)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 178 (1929), S. 329-336 
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    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
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    URL: http://dx.doi.org/10.1002/zaac.19291780126
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    Der Verteilungssatz. II. Der Verteilungssatz für kondensierte Systeme (1929)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 178 (1929), S. 366-370 
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    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
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    URL: http://dx.doi.org/10.1002/zaac.19291780130
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    Über die Bindung der Alkalimetalle durch Kohlenstoff. II (1929)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 178 (1929), S. 353-365 
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    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: 1. Die von Fredenhagen und Cadenbach angewandten Untersuchungsmethoden wurden verbessert(a)durch Anwendung eines Temperaturreglers,(b)durch Abschmelzen der Versuchsrohre innerhalb des Ofens,(c)durch Anwendung einer genaueren Kaliumbestimmungsart.
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    Über die beiden Formen des kristallinen Berylliumhydroxydes und über das System BeO—Na2O—H2O (1929)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 178 (1929), S. 400-410 
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    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: 1. Berylliumhydroxyd kristallisiert in zwei röntgenographisch leicht unterscheidbaren Modifikationen der Zusammensetzung BeO.H2O. Das gegenseitige Stabilitätsverhältnis der beiden Formen bei 30° und bei Zimmertemperatur wird geklärt.
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    Neunter Bericht der Deutschen Atomgewichts-Kommission (1929)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 178 (1929), S. 411-412 
    Details
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19291780135
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    Zur Kenntnis des Systems Eisenoxyd-Wasser (1929)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 179 (1929), S. 49-76 
    Details
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 3 Tab.
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    URL: http://dx.doi.org/10.1002/zaac.19291790104
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    Iridiumfluoride (1929)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 179 (1929), S. 161-185 
    Details
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19291790113
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  • 49
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    Über den Einfluß fein verteilter Ausscheidungen auf die Koerzitivkraft (1929)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 179 (1929), S. 297-308 
    Details
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Die magnetischen Eigenschaften, insbesondere die Koerzitivkraft ferromagnetischer Legierungen, sind von der Größe und Anordnung feinverteilter Ausscheidungen außerordentlich abhängig. Dieses wird an Legierungen, die im Sinne des Duralumins veredelbar sind, beim Zerfall der übersättigten festen Lösungen nachgewiesen. Als Beispiel werden die Eisen-Kohlenstoff- und Eisen-Stickstofflegierungen benutzt. Die Erkenntnis dieser Zusammenhänge wird zur Deutung des magnetischen Verhaltens einiger Legierungen bei bestimmter Behandlung herangezogen.
    Additional Material: 7 Ill.
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    URL: http://dx.doi.org/10.1002/zaac.19291790125
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    Kernzahlen bei der Kristallisation aus Gelen (1929)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 179 (1929), S. 267-276 
    Details
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: 1. Durch geeignete Leitung des Abkühlungsvorganges lassen sich in Hydrogelen von Na-Oleat bei verschiedenen Konzentrationen auszählbare Kristallisationskerne erzeugen. Die Kernzahl dieser relativ verdünnten binären Systeme (0, 43 n bis 0,6 n) hängt von der Tiefe und Dauer der Unterkühlung in analoger Weise ab, wie bei monomeren Schmelzen.
    Additional Material: 6 Ill.
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    URL: http://dx.doi.org/10.1002/zaac.19291790119
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    Das Zustandsdiagramm Calcium-Natrium (1929)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 179 (1929), S. 281-286 
    Details
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 2 Ill.
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    URL: http://dx.doi.org/10.1002/zaac.19291790122
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    Über die Berechnung der van der Waals'schen a-Konstanten aus den Dühring'schen spezifischen Faktoren gemäß der van Laar'schen Formel der Dampfspannungskurve (1929)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 179 (1929), S. 293-296 
    Details
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19291790124
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  • 53
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    Über die Gewinnung hochwertiger Rubidiumpräparate aus Carnalliten (1929)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 179 (1929), S. 321-331 
    Details
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19291790127
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  • 54
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    Zur Kenntnis der Doppelsulfate und ihrer Komponenten IV. Über das Rhodiumsulfat und seine Hydrate (1929)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 180 (1929), S. 42-56 
    Details
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Die isomeren Sulfate des Rhodiums wurden rein dargestellt, untersucht und ihre Analogie mit den entsprechenden Verbindungen des Chroms diskutiert. Bisher gelang es zwei Rhodiumsulfate zu erhalten, ein gelbes und ein rotes.
    Additional Material: 4 Ill.
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    URL: http://dx.doi.org/10.1002/zaac.19291800105
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    Nachweis von Alkalimetallen in Salzgemischen und Silicaten (1929)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 180 (1929), S. 75-82 
    Details
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19291800108
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  • 56
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    Kleinste Kristallkeime in hochübersättigten Goldlösungen (1929)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 180 (1929), S. 110-114 
    Details
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: 1. Durch die Kenntnis des zeitlichen Verlaufes der spontanen Keimbildung in hochübersättigten Goldlösungen ist es möglich, auch Goldhydrosole mit amikroskopischen Teilchen abgestufter Größe darzustellen.
    Additional Material: 1 Ill.
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    URL: http://dx.doi.org/10.1002/zaac.19291800112
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    Die Alkaliperborate im festen Zustand (1929)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 180 (1929), S. 127-128 
    Details
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19291800115
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    Die Temperaturabhängigkeit von Dichte und Brechungsquotient (1929)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 180 (1929), S. 159-160 
    Details
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19291800118
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    Über die Abhängigkeit der Oberflächenspannung γ und der Verdampfungswärme λ von Dichte und Temperatur, bis an die kritische Temperatur (1929)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 180 (1929), S. 193-214 
    Details
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19291800121
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    Über das Molekularvolumen organischer Liganden in Komplexsalzen. 1. Die Raumbeanspruchung des Ortho-Phenylendiamins in seinen Metallsalzverbindungen (1929)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 180 (1929), S. 225-234 
    Details
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19291800124
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    Ferriäthylat. (Darstellung und Eigenschaften.) (1929)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 180 (1929), S. 65-74 
    Details
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: 1. Ferriäthylat wird zum ersten Male als kristallisierende Verbindung hergestellt.
    Additional Material: 5 Ill.
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    URL: http://dx.doi.org/10.1002/zaac.19291800107
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    Über die Konstitution der Metallsalzverbindungen mit p-Phenylendiamin und Benzidin (1929)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 180 (1929), S. 105-109 
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    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19291800111
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    Zur Kenntnis des komplex-chemischen Verhaltens aromatischer Diamine. Über Metallsalzverbindungen mit Ortho - Phenylendiamin (1929)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 180 (1929), S. 89-104 
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    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: 1. Das o-Phenylendiamin wurde aus seine Komplexbildungsfähigkeit mit Metallsalzen, speziell mit den Halogeniden und Sulfaten von Kobalt, Nickel, Kupfer, Zink und Cadmium untersucht. Es konnten Verbindungen mit 1, 2, 3, 4 und 6 Molekülen Diamin auf 1 Molekül Metallsalz festgestellt werden.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19291800110
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    Über die Platzwechselgeschwindigkeit des Silbers im Silbertellurid-Antimonid und -Zinnid (1929)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 180 (1929), S. 150-158 
    Details
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: 1. Es wurde die Platzwechselgeschwindigkeit des Silbers im Silbertellurid - Antimonid und -Zinnid untersucht durch Verfolgung der Diffusionsgeschwindigkeit der genannten Verbindungen im Tellurid, Antimonid bzw. Zinnid des Kupfers.
    Additional Material: 3 Tab.
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    URL: http://dx.doi.org/10.1002/zaac.19291800117
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    Berichtigung (1929)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 180 (1929), S. 224-224 
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    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19291800123
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    Untersuchungen auf dem Gebiete der konzentrierten Lösungen (1929)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 181 (1929), S. 137-153 
    Details
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: In den Kapiteln 1-3 ist gezeigt worden, daß einzelne Zweige der Schmelzkurven der binären Systeme der Gleichung S = xe-a/T nur in dem Falle genügen, daß die Größen Q, die nach der SCHRÖDER- schen Formel berechnet sind, nicht allzusehr von der tatsächlichen Schmelzwärme der kristallisierenden Komponente abweichen. Die veränderlichen Werte der Größen Q und deren bedeutende Abweichung von der tatsächlichen Schmelzwärme können durch das Auftreten von chemischer Wechselwirkung zwischen den Komponenten beim Zusammenschmelzen derselben erklärt werden. Die logarithmische Darstellungsmethode der Zweige der Schmelzkurven (log S, 1/T) erlaubt uns Schlusse über die Natur der Wechselwirkung zwischen den Komponenten zu ziehen.
    Additional Material: 4 Ill.
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    URL: http://dx.doi.org/10.1002/zaac.19291810114
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    Über die Einwirkung von Kohlensäure unter hohem Druck auf metallisches Eisen (1929)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 181 (1929), S. 159-171 
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    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Wirkt Kohlensäure unter hohem Kohlendioxyddruck auf metallisches Eisen ein, welches in Wasser suspendiert ist, dann tritt Lösung des Eisens ein zu dem leichtlöslichen Ferrobicarbonat. Bei 50 Atmosphären Kohlendioxyddruck werden in kürzerer Zeit viel höhere Bicarbonatkonzentrationen erreicht als bei Atmosphärendruck in sehr langer Zeit. Je mehr Eisen sich löst, desto größer wird die Bicarbonationenkonzentration. Dadurch wird aber die Wasserstoffionenkonzentration der Kohlensäure selbst so stark zurückgedrängt, daß nach genügend langer Einwirkungsdauer die Geschwindigkeit der Auflösung so klein wird, daß bei weiterer Einwirkung der Kohlensäure die Bicarbonatkonzentration praktisch konstant bleibt. Da die Kohlensäurekonzentration mit steigender Temperatur sinkt, wird bei höherer Temperatur jene Wasserstoffionenkonzentration, bei der die Auflösungsgeschwindigkeit sehr klein wird, bereits bei kleineren Bicarbonatkonzentrationen erreicht. Da die Kohlensäurekonzentration bei Erniedrigung des Druckes sinkt, so stellt sich bei niederen Drucken jene Endwasserstoffionenkonzentration bereits ebenfalls bei kleineren Bicarbonatkonzentrationen ein. Für jede Temperatur und jeden Druck gibt es eine maximale Ferrobicarbonatkonzentration, die bei sehr langer Einwirkungsdauer nur noch urn sehr wenig ansteigt.
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    URL: http://dx.doi.org/10.1002/zaac.19291810116
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    Über die Potentiometrische Titerstellung von Cerisulfat (1929)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 181 (1929), S. 183-188 
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    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Die potentiometrische Titration von Ferrocyanid mit Cerisulfat und umgekehrt liefert ein genaues Resultat. Letzteres ist besonders zur Titerstellung von Cerisulfatlösung geeignet.
    Additional Material: 2 Ill.
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    URL: http://dx.doi.org/10.1002/zaac.19291810119
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    Aufnahme von Siedediagrammen binärer hochsiedender Flüssigkeitsgemische (1929)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 181 (1929), S. 225-236 
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    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Es wird die von O. RUFF seinerzeit zur Messung von Dampfdrucken bzw. Siedepunkten vorgeschlagene Spiralmethode auf binäre hochsiedende Systeme übertragen.
    Additional Material: 6 Ill.
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    URL: http://dx.doi.org/10.1002/zaac.19291810123
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    Ein Beitrag zur Kenntnis der molekulardispersen Kieselsäure (1929)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 181 (1929), S. 237-248 
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    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: No Abstracts.
    Additional Material: 8 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19291810124
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    Chromi-äthylate. Darstellung und Eigenschaften (1929)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 181 (1929), S. 285-294 
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    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Es wurden folgende Verbindungen zum ersten Male dargestellt und näher charakterisiert: CrCl3 · 4C2H50H, kristallisiert. Tetragonales CrCl3 · 3C2H5OH, pseudomorph nach CrCl3 · 4C2H5OH. Das kristallisierte Chromi-äthylat Cr(OC2H5)3 · C2H5OH.
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    URL: http://dx.doi.org/10.1002/zaac.19291810127
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    Die Darstellung und die Eigenschaften eines Bromoxydes (1929)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 182 (1929), S. 182-186 
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    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: 1. Es wird erstmalig ein Bromoxyd präparativ aus Brom und Ozon dargestellt.
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    URL: http://dx.doi.org/10.1002/zaac.19291820117
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    Gleichgewichtsuntersuchungen über die Reduktions-, Oxydations- und Kohlungsvorgänge beim Eisen. VIII (1929)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 182 (1929), S. 97-117 
    Details
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 8 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19291820109
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    Die Darstellung und Eigenschaften des Nitrylchlorids (1929)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 182 (1929), S. 139-144 
    Details
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Es wird eine neue Methode zur Darstellung des Nitrylchloride NO2Cl1 angegeben und dieses erstmalig rein dargestellt.
    Additional Material: 1 Ill.
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    URL: http://dx.doi.org/10.1002/zaac.19291820112
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    Über die Umwandlung des Austenits in Martensit in gehärtetem Stahl (1929)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 183 (1929), S. 98-120 
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    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Die Umwandlung des Austenits in Martensit wird durch Spannungen ausgelöst. Dementsprechend sinkt der Beginn der Umwandlung und die umgewandelte Menge, wenn die Spannungen vermindert werden. Das Absinken des Umwandlungsbeginns wird beim Lagern der Stähle nach dem Härten und beim Abschleifen der Oberfläche an einem Kohlenstoff- und einem austenitischen Manganstahl im Einklang mit der Spannungshypothese beobachtet.
    Additional Material: 17 Ill.
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    URL: http://dx.doi.org/10.1002/zaac.19291830107
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    Reduktion von Aceton durch Magnesium in Gegenwart von wasserfreiem Aluminiumchlorid (1929)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 183 (1929), S. 140-150 
    Details
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19291830110
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    Über Doppelsulfate des Rhodiums und ihre Hydrate. Zur Kenntnis der Doppelsulfate und ihrer Komponenten. VI (1929)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 182 (1929), S. 411-424 
    Details
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: 1. Der Cäsium-rhodiumalaun wird rein dargestellt und untersucht. Es ergibt c, daß ein 12-, 6-, 2- und 0-Hydrat existiert und die Dichten der Hydrate mit fortschreitender Entwässerung kontinuierlich ansteigen. Der Alaun gehört also zum Typus B.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19291820137
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  • 78
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    Der Druckeinfluß auf das elektrische Leitvermögen von Salzlösungen (1929)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 183 (1929), S. 1-29 
    Details
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 17 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19291830102
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  • 79
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    Messung der EMK einiger Bildungsketten geschmolzener Salze (1929)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 183 (1929), S. 81-97 
    Details
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: 1. Es wurden die EMK der Bildungsketten von PbCl2, CdCl2, ZnCl2 und MgCl2 gemessen.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19291830106
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  • 80
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    Über die Elektrolytische Dissoziationskonstante von Wasserstoffsuperoxyd (1929)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 183 (1929), S. 77-80 
    Details
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19291830105
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  • 81
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    Über den Einfluß der stillen elektrischen Entladung auf Schwefelwasserstoff (1929)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 183 (1929), S. 287-295 
    Details
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Mit Hilfe einer geeigneten Apparatur wurde das Verhalten des Schwefelwasserstoffes im Felde stiller elektrischer Entladungen untersucht.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19291830120
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  • 82
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    Zur Konstitution der zinnsauren Salze (1929)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 183 (1929), S. 189-192 
    Details
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19291830112
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  • 83
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    Über die Löslichkeit des Sauerstoffs im festen Eisen (1929)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 183 (1929), S. 225-250 
    Details
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: 1. Es wurde aus Gleichgewichtsversuchen in strömenden H2—H2O-Dampfgemischen die Löslichkeit des Sauerstoffes im festen Eisen bei 715° durch Wägung zu 0,11 ± 0,015% bestimmt.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19291830116
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  • 84
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    Potentiometrische Titrationen mit Ferricyankalium in alkalischer Lösung. II. Arsen, Antimon, Zinn und Thallium (1929)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 183 (1929), S. 258-262 
    Details
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19291830118
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  • 85
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    Über die Polythermen der ternären Systeme, die neben Wasser je ein Sulfat der Alkalien und der Vitriolbildner enthalten. I (1929)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 183 (1929), S. 296-300 
    Details
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19291830121
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  • 86
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    Das Verteilungsgleichgewicht von Silber zwischen Blei und Aluminium, ein Beitrag zur Prüfung des Verteilungssatzes für kondensierte Systeme (1929)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 183 (1929), S. 311-339 
    Details
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: 1. Es wurde ein System von 3 Metallen gesucht, von denen zwei gegenseitig praktisch unmischbar sind, während das dritte sich in den beiden anderen bis zu hohen Konzentrationen auflöst, ohne daß deren gegenseitige Löslichkeit durch diesen Zusatz wesentlich gesteigert wird. Mischungen von Aluminium, Silber und Blei entsprachen diesen Anforderungen weitgehend.
    Additional Material: 12 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19291830123
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  • 87
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    Über die Beziehungen verschiedener Hydrate eines Salzes zueinander (1929)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 183 (1929), S. 347-352 
    Details
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19291830125
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  • 88
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    Über Einige neue Kobaltite vom Spinelltypus (1929)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 183 (1929), S. 384-394 
    Details
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19291830128
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  • 89
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    Beiträge zur Katalyse der Reaktion zwischen festen Stoffen. Katalytische Stannatbildung aus Kalk und Zinnoxyd (1929)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 184 (1929), S. 385-408 
    Details
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Die katalytische Reaktion der Stannatbildung aus Zinnoxyd und Kalk wurde experimentell untersucht und gefunden, daß1Das Gemisch der beiden Stoffe ohne Zusatz erhitzt kaum Stannat bildet,2In Gegenwart einer Spur verschiedener Katalysatoren, besonders aber von Reduktionsmitteln, die Reaktion stark beschleunigt und selbst der Cassiterit in einer halben Stunde bei 900° C vollständig in die säurelösliche Form umgewandelt wird,3Diese Umwandlung auch dann eintritt, wenn die beiden Stoffe nicht gemischt, sondern getrennt erhitzt werden.
    Additional Material: 9 Ill.
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    URL: http://dx.doi.org/10.1002/zaac.19291840132
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  • 90
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    Über Chemische Sorption. III. Zur Frage über heterogenes chemisches Gleichgewicht (1929)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 184 (1929), S. 232-236 
    Details
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 5 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19291840115
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  • 91
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    Zur Kenntnis des Systems Kobalt(3)oxyd-Wasser. Beiträge zur Kenntnis der Oxydhydrate. XVII (1929)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 184 (1929), S. 279-288 
    Details
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19291840119
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  • 92
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    Über„Chemisch reines, pulverförmiges Quecksilber“ (1929)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 184 (1929), S. 298-302 
    Details
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19291840123
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  • 93
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    Über die Schmelzpunkte von Calcium, Strontium und Barium (1929)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 185 (1929), S. 167-171 
    Details
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: No abstract.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19291850112
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  • 94
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    Beziehungen zwischen den Ionenradien und Entropie und Schwingungszahl bei Alkalihaloiden (1929)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 186 (1929), S. 251-252 
    Details
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19291860118
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  • 95
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    Über Mehrstoffsysteme mit Eisen. II. Das System Chrom-Kohlenstoff (1929)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 185 (1929), S. 193-216 
    Details
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Für das binäre System Chrom-Kohlenstoff werden bis 13,33% Kohlenstoff auf Grund thermischer Untersuchung, Gefügebeobachtung und Dichtemessungen die einzelnen Möglichkeiten der Gleichgewichtsverhältnisse an Hand dreier Zustandsschaubilder näher erörtert. In diesen Diagrammen sind die Kurven im Bereich von 6,9 bis mindestens 8,3% C Kurven metastabiler Gleichgewichte. (Anm. bei der Korrektur.)
    Additional Material: 22 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19291850116
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  • 96
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    Löslichkeitsprodukte anorganischer Salze im flüssigen Ammoniak und ihr Vergleich mit den Verhältnissen in anderen Lösungsmitteln unter besonderer Berücksichtigung ihrer Dielektrizitätskonstanten. Nach Versuchen von Kurt Krieghoff (Leitfähigkeitsmessungen) und Bernhard von Freytag-Loringhofen (Messungen von Konzentrationsketten) (1929)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 186 (1929), S. 1-37 
    Details
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Durch die Untersuchungen amerikanischer Forscher war schon bekannt, daß viele anorganische Salze in [NH3] ganz andere Löslichkeiten zeigen als in [H2O]. Teils durch Messungen der Leitfähigkeiten der gesättigten Lösungen, teils durch Konzentrationskettenmessungen wurden die Löslichkeiten der folgenden Salze in [NH3] quantitative bestimmt: AgNO3, AgJ, AgBr, AgCl, AgF, NH4NO3, NH4J, NH4Br, NH4Cl, NH4F, KNO3, KJ, KBr, KCl, KF, KOH, LiF. Hierbei wurde im einzelnen folgendes festgestellt: Die Nitrate zeigen in [H2O] und in [NH3] im allgemeinen angenähert gleiche Sättigungsionenkonzentrationen. Bei den Jodiden sind die Sättigungskonzentrationen in [NH3] erheblich größer als in [H2O], und zwar beim AgJ um das 108-fache. Beim AgF liegen die Verhältnisse dagegen umgekehrt. Hier ist die Sättigungskonzentration in [H2O] um rund 1015mal größer als in [NH3], in dem die Fluoride  -  näher untersucht wurden noch KF, NH4F und LiF  -  überhaupt keine nachweisbare Löslichkeit zeigen. Die Löslichkeitsverhältnisse der Chloride und Bromide liegen zwischen diesen beiden Extremen, und zwar zeigen die Bromide in [NH3] allgemein eine größere Sättigungsionenkonzentration als die Chloride.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19291860102
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  • 97
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    Über die Bildungswärmen und die Konstitution von Cobalt(II)-Halogenidverbindungen mit Aminen (1929)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 186 (1929), S. 97-118 
    Details
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19291860107
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  • 98
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    Beiträge zur Kenntnis der schwefligen Säure und ihrer Salze. VIII. Bemerkungen zu der Abhandlung von H. Bassett und R. G. Durrant: Die gegenseitigen Beziehungen von Säuren des Schwefels (1929)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 177 (1929), S. 61-70 
    Details
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19291770106
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  • 99
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    Die Reindarstellung und die Eigenleitfähigkeit des Fluorwasserstoffs (1929)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 178 (1929), S. 289-299 
    Details
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: 1. Es wurde die Abgabe des Fluorwasserstoffs aus Kaliumbifluoridschmelzen untersucht und gefunden, daß Kaliumbifluorid das erste Drittel seines HF-Gehaltes bei allmählich ansteigender Temperatur, den Rest aber bei konstanter Temperatur (etwa 504°) abgibt. Die Schmelze ist alsdann an Kaliumfluorid gesättigt, das als Bodenkörper abgeschieden wird. Durch Überwachung der Temperatur der Schmelze und der Heizstromstärke kann man die HF-Abgabe in beliebiger Weise regeln.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19291780121
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  • 100
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    Über die spektralanalytische Untersuchung der Auflösung von Metallegierungen und die Tammann'schen Resistenzgrenzen (1929)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 179 (1929), S. 111-112 
    Details
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19291790108
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