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  • Inorganic Chemistry  (37)
  • Life and Medical Sciences  (15)
  • ASTROPHYSICS
  • EARTH RESOURCES AND REMOTE SENSING
  • INSTRUMENTATION AND PHOTOGRAPHY
  • Nuclear Structure
  • 2010-2014
  • 1930-1934  (52)
  • 1925-1929
  • 1934  (28)
  • 1931  (24)
Collection
Keywords
Publisher
Years
  • 2010-2014
  • 1930-1934  (52)
  • 1925-1929
Year
  • 1
    Electronic Resource
    Electronic Resource
    Daten zur hydrolytischen Fällungsmaßanalyse (1934)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 217 (1934), S. 237-240 
    Details
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19342170303
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  • 2
    Electronic Resource
    Electronic Resource
    Über die magnetische Susceptibilität der komplexen Verbindungen (1931)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 64 (1931), S. 2591-2598 
    Details
    ISSN: 0365-9631
    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/cber.19310641002
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  • 3
    Electronic Resource
    Electronic Resource
    A study of the spermatozoon of the fowl, with particular reference to osmiophilic bodies in the sperm head (1934)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 56 (1934), S. 325-337 
    Details
    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: The purpose of this study was to learn something of the nature of the bead-like bodies which occur in the head of the sperm of the fowl since it was found in a previous study that they are apparently affected in a characteristic manner by vitamin E deficiency.Staining tests indicate that these bodies are composed of fats and fatty acids since they respond to osmic acid and Nile blue sulphate. They are also impregnated with silver nitrate and hence may be associated with the so-called Golgi materials of the cell.The beads first appear as a complete single row but subsequently they undergo fragmentation and redistribution. The whole process is probably a final transitory step in sperm transformation.The presence of this fatty material may signify that the sperm of the fowl, in contrast to that of most other animals, carries a store of food material to support its activity after liberation. The sperm may also be the carrier of a definite amount of vitamin E. Furthermore, the presence of this material may offer an explanation of the high resistance of the testis of the fowl to vitamin E deficiency because, since this vitamin is fat soluble, the testis as a whole would probably receive a disproportionately large share of the vitamin E stores of the individual.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jmor.1050560207
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  • 4
    Electronic Resource
    Electronic Resource
    The developmental anatomy of male genitalia in Melanoplus differentialis (acrididae) orthoptera) (1934)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 55 (1934), S. 577-609 
    Details
    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: An investigation has been conducted to ascertain the relationship of certain structures in the embryo of the grasshopper known as Melanoplus differentialis with reproductive organs in the adult male.The order of development of these structures was traced through the entire life history.It was determined that they are the rudiments of certain reproductive organs and that the knowledge obtained serves as an aid in more accurately classifying insects.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jmor.1050550308
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  • 5
    Electronic Resource
    Electronic Resource
    Polymorphism among the subgenera of nasutitermes (1931)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 52 (1931), S. 593-607 
    Details
    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: This study is concerned with the interrelationship existing among the polymorphie soldier castes of six representative subgenera of the genus Nasutitermes. By measurements of anatomical parts and camera-lucida drawings, an attempt has been made to compare these particular subgenera on a basis of gradual divergence of certain structures. For this purpose a series of tables was compiled in which apparently unstable structures were compared to a relatively stable figure in all available species of the selected subgenera.According to my findings, it was concluded that there is no strict correspondence between the major, intermediate, and minor castes of different subgenera of the genus Nasutitermes. Particular reference is made to the work of N. Holmgren ('12) and to that of J. S. Huxley on heterogonic growth.
    Additional Material: 4 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jmor.1050520211
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  • 6
    Electronic Resource
    Electronic Resource
    The activity of the coelomic (germinal) epithelium of the male musk turtle, Sternotherus odoratus (Latreille)The material used in this study was collected and prepared in part at the Zoölogical Laboratories of the University of Michigan. The remainder of the material was prepared and the study was completed at the Zoölogy Department of the State University of Iowa. Acknowledgments for financial assistance are due to the administrators of the Faculty Research Fund of the University of Michigan and to the National Research Council Committee for Research in Problems of Sex as administered by Prof. E. Witschi. (1934)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 56 (1934), S. 59-99 
    Details
    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: Histological studies of testes of both immature and mature individuals show that the peritoneal epithelium does not give up its proliferative capacities with the completion of testis differentiation. Certain regions of the antimesorchial surface retain their activity and continue to contribute cellular elements during testis growth. Stromal cells, germ cells, and sections of or entire seminiferous tubules originate from the peritoneum in the form of cord-like ingrowths. In this form, the proliferations of the germinal epithelium of the testes are similar to and homologous with the continuous proliferations of the germinal epithelium of the ovary.In Sternotherus, both testis and ovary differentiate out of a bisexual primordium in which the deeper parts of the germinal epithelium form an ovarian cortex. Since the germinal epithelium persists as an active part of both ovary and testis, it must be responsive to the same physiological factors of female or male differentiation respectively. It is indifferent sexually and once the direction of sex differentiation is established, the response of the germinal epithelium is in the determined direction. Its activity is then to produce either seminiferous tubules or ovarian follicles, and is directly dependent upon the processes of embryonic sex differentiation and determination.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jmor.1050560105
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  • 7
    Electronic Resource
    Electronic Resource
    The effects of vitamin E deficiency on the testis of the male fowl (Gallus domesticus) (1934)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 56 (1934), S. 339-359 
    Details
    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: The effects of vitamin E deficiency in the fowl were observed in Rhode Island Red males over a period of approximately 2 years.Mating experiments showed that after 1 year on the E-free diet all of the males were capable of fertilizing ova, but that after 2 years some of the males were sterile.Sperm smears showed that shortly after the beginning of the experiment, many of the mature spermatozoa exhibited an abnormal condition of the nuclear material of the head, while others remained normal.In histological sections of the testes made at the end of the 2 years, conditions varied from almost normal to complete atrophy, the latter being a condition that has already been described in the male mammal. Moreover, the conditions in any given section were not uniform for even in an advanced stage of E deficiency there were small islands of apparently normal tissue. However, in this case, as in the mammal, the process of degeneration affects the mature sperm cells first and gradually works to the outside of the seminiferous tubule thus attacking the youngest maturation stages last.The results of the experiment point definitely to destruction of the testis under prolonged E-deficient conditions but it is also quite apparent that the testis of the fowl is extremely resistant to vitamin E deficiency.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jmor.1050560208
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  • 8
    Electronic Resource
    Electronic Resource
    Chromosomes of three species of mantidae (1931)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 52 (1931), S. 525-533 
    Details
    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: There are twenty-seven spermatogonial chromosomes in Tenoder'a sinensis, three of which are larger than the others and lag behind in anaphase. These three chromosomes have been traced through the prophases of the first spermatocyte to the metaphase, where they appear as a hexad. In the first spermatocyte division two of the constituent diads of the hexad pass to one pole, the remaining one to the other, thus giving rise to two types of second spermatocytes, one with thirteen and the other with fourteen chromosomes. There are twenty-eight chromosomes in somatic metaphases of the female; four of these chromosomes are larger than the others. The sex chromosomes of the male are represented by the formula Xa + Y + Xb, that of the female by 2Xa + 2Xb.Similar conditions are reported for Mantis religiosa and Stagmomantis carolina.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jmor.1050520208
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  • 9
    Electronic Resource
    Electronic Resource
    Some histological effects of ultrasonic waves on cells and tissues of the fish lebistes reticulatus and on the larva of rana sylvatica (1931)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 52 (1931), S. 155-164 
    Details
    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: Some pathological effects of supersonic waves produced by the piezo-electric oscillator described by Wood and Loomis ('27) are described.Death of fish and frogs was due to haemolysis of erythrocytes within the gill capillaries. Disruption of gill filaments, trauma, and extravasation in the head and gill region and in the peripheral musculature were noted.No effect on the nervous system was apparent histologically.Organisms were not killed in water under hyper- or hyponormal pressures. In these cases no cavitation of gases took place.Isolated frog sartorius muscle in Ringer's was not damaged.Bubbles of gas were easily observed within the muscle cells of the tadpoles when such cells were not more violently disturbed. Such bubbles were abundant in the more fluid muscles of four- or five-day tadpoles, less abundant in 15- to 35-mm. Lebistes, and entirely lacking in adult frog sartorius. Protoplasmic viscosity differences probably explain the gradient.The above-observed intracellular cavitation explains the muscular destruction, the haemolysis, the change in specific gravity of organisms subjected to the wave treatment, and may offer light upon the stimulatory effect of such waves on excitable tissues (compare Harvey, '28).
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jmor.1050520107
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  • 10
    Electronic Resource
    Electronic Resource
    Die Bestimmung von Jodid neben Bromid und Chlorid (1931)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 195 (1931), S. 75-82 
    Details
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: 1. Potentiometrisch kann Jodid entweder so bestimmt werden, daß man unter Zugabe von Tetrachlorkohlenstoff bis zum ersten Wendepunkt beim Verbrauch von 1 Val Permanganat auf 1 Mol Jodid titriert oder ohne Zusatz bis zum zweiten Wendepunkt, der beim doppelten Verbrauch eintritt. Sind auf 1 Mol Jodid nicht mehr als 10 Mol Bromid vorhanden, so ist die erste Art unbedingt genauer; bei höheren Bromidüberschüssen hängt es von den Eigenschaften des benutzten Potentiometers ab, welches Verfahren bessere Ergebnisse liefert.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19311950109
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