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  • General Chemistry  (793)
  • Life and Medical Sciences  (29)
  • Temperatur  (5)
  • 1925-1929  (827)
  • 1925  (827)
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Keywords
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  • 1925-1929  (827)
Year
  • 1
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    Unknown
    In:  Die kranke Pflanze 2, p. 117-119
    Publication Date: 1925
    Description: Allgemeine Beobachtungen zum Auftreten und zur Wanderung des Getreidelaufkäfers und dessen Larven; Nennung von Möglichkeiten zur Bekämpfung des Insekts KATASTER-BESCHREIBUNG: Abhängigkeit der Stärke des Auftretens von der Temperatur KATASTER-DETAIL: Delta T+, dann Auftreten der Larven +
    Keywords: Sachsen ; Beginn 20. Jahrhundert ; Insekten ; Boden ; Ertrag ; Getreide ; Landwirtschaft ; Pflanzenschädling ; Roggen ; Temperatur ; Weizen
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  • 2
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    In:  Kühn-Archiv:53-78.
    Publication Date: 1925
    Description: Einführung der Rangordnungs- und Korrelationsmethode anhand langjähriger Beobachtungen, Einfluss des Niederschlages und der Temperatur auf den Ertrag von Erbsen, Kartoffeln, Weizen, Hafer und Roggen KATASTER-BESCHREIBUNG: Einfluss der Witterung (Temperatur und Niederschlag) auf den Ertrag KATASTER-DETAIL: Delta T (März und April) + und Delta Nied (März und April) -, dann Erträge (Erbsen) +; Delta T (Mai und Juni) - und Delta Nied (Mai und Juni) +, dann Erträge (Erbse) +; Delta T (Oktober Vorjahr) +, dann Erträge (Kartoffel) +; Delta T (März) + und Delta T (Mai und Juni) -, dann Erträge (Winterweizen) +; Delta Nied (Januar bis März)-, dann Erträge (Hafer) +; Delta Nied (Januar bis März)-, dann Erträge (Winterroggen) +;
    Keywords: Halle ; 1893-25 ; Kartoffeln ; Ertrag ; Fichte ; Hafer ; Korrelationsmethode ; Niederschlag ; Rangordnungsmethode ; Roggen ; Temperatur ; Weizen ; Witterung
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  • 3
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    In:  Diss., Göttingen
    Publication Date: 1925
    Description: Ergebnisse ( Korrelationsmethode) der Bezeihung zwischen Witterung und Ertrag vieler Kulturen eingeteilt nach Monaten KATASTER-BESCHREIBUNG: Beziehungen zwischen Witterung (Temperatur und Niederschlag)und Ernte KATASTER-DETAIL: Delta Nied (erste 10 Blütetage) -, dann Ertrag (Roggen) +; Delta Nied (Beginn der Blüte bis 10 tage nach Ende der Blüte)-, dann Ertrag (Winterweizen) +; Delta Nied (während der 20 Tage nach Beginn der Blüte) -, dann Ertrag (Sommerweizen) +; Delta Tmit (während der 20 Tage nach dem Aufgang) -, dann Ertrag (Hafer) +; Delta Tmin (während der 20 Tage nach dem Aufgang) -, dann Ertrag (Gerste) +; Delta Tmit (während der 20 Tage nach Beginn der Blüte) -, dann Ertrag (Kartoffeln) +; Delta Nied (vom Aufgang bis zum Beginn der Blüte) -, dann Ertrag (Erbsen) +; Delta Nied +, dann Ertrag (Vietsbohnen) +;
    Keywords: Göttingen ; 1901-1922 ; Kartoffeln ; Ertrag ; Hafer ; Korrelationsmethode ; Niederschlag ; Temperatur ; Weizen ; Witterung ; Erbsen
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  • 4
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    In:  Mitt. Deut. Landw. Gesell. 40:950-55.
    Publication Date: 1925
    Description: Zusammenhang zwischen Weizenqualität und den klimatischen Verhältnissen, Schwerpunkt auf die Physiologie des Samens und Qualität (Backfähigkeit) KATASTER-BESCHREIBUNG: KATASTER-DETAIL:
    Keywords: Europa ; letzten100 Jahre ; Ertrag ; Getreide ; Klima ; Niederschlag ; Temperatur ; Weizen
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  • 5
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    In:  Georgine, Jahrgang 102, Nr. 68, p. 806-807
    Publication Date: 1925
    Description: Biologie und Bekämpfung von Fritfliege, Getreideblumenfliege, scheckige oder gelbe Halmfliege, Weizenfliege, Hessenfliege KATASTER-BESCHREIBUNG: Einfluss der Witterung (Temperatur, Niederschlag und Wind) auf die Schädlinge KATASTER-DETAIL: Delta T (Winter) +, Anzahl Maden der Halmfliege +; Delta Nied (September) + und Delta Wind (September) +, dann Hessenfliege -
    Keywords: Deutschland ; 1903-1925 ; Insekten ; Anbautermine ; Boden ; Ertrag ; Getreide ; Hafer ; Niederschlag ; Pflanzenschädling ; Temperatur ; Vegetationsperiode ; Weizen ; Wind ; Witterung ; Düngung ; Gerste
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  • 6
    Electronic Resource
    Electronic Resource
    New York, NY : Wiley-Blackwell
    Journal of Morphology 40 (1925) 
    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
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  • 7
    Electronic Resource
    Electronic Resource
    New York, NY : Wiley-Blackwell
    Journal of Morphology 40 (1925), S. 111-167 
    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: Microscopic examination of both living and stained forms indicates that the so-called ‘multivacuolate’ and ‘amicronucleate races of Paramecium caudatum’ belong to the species Paramecium multimicronucleata. The published accounts of the morphology and cultural characteristics of the various forms are compared and provide additional evidence. A more complete description is given, including distinctive characters previously omitted.The conjugation process of P. multimicronucleata in general resembles that of P. caudatum, most of the differences being due to the presence of four micronuclei instead of one. These each divide twice with characteristic figures, twelve of the sixteen daughter nuclei then degenerating. One of the remaining four splits to form a single pair of functional pronuclei in each cell. The two migratory pronuclei interchange as in P. caudatum. The synkaryon divides three times, and probably seven of these nuclei degenerate. The remaining one apparently undergoes two divisions. In most cases by six to eight hours after the conjugants separate two micronuclei of the four thus produced form enlarged macronuclear anlagen, the other two remaining as micronuclei. Each anlage divides within the next two or four hours, producing four macronuclear and four micronuclear analagen. Two fissions, each preceded by a division of the micronuclei, restore vegetative conditions.The process described above is compared with conjugation in P. bursaria, P. caudatum, and P. putrinum.
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    New York, NY : Wiley-Blackwell
    Journal of Morphology 40 (1925), S. 261-297 
    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: The parasynaptic union of chromosomes associated with the formation of a karyosphere is demonstrated in the spermatocytes of Phanaeus.The twelve V-shaped leptotene threads are polarized with their apices embedded in one plasmosome-like body, their distal ends in another (primary and secondary caps, respectively), and undergo a conjugation of the parasynaptic type. The distal ends of the chromosomes are freed from their attachment in the secondary cap. The six pachytene loops retain their polarized configuration.The basichromatin of the pachytene chromosomes appears ultimately to be withdrawn to form the karyosphere comprising six chromatic bodies within an oxychromatic «plasmosome,» the latter probably derived from the primary cap. The two caps are believed to arise from the chromosomes. The primary cap apparently becomes incorporated again in the chromosomes; the secondary cap, together with linin remnants of the pachytene chromosomes, disintegrates in the nucleus as residual chromatin.In the dissolution of the karyosphere six ring-shaped tetrads emerge arranged in a temporarily connected chain, giving under certain conditions, the misleading impression of twelve components arranged end to end. The entire content of the karyosphere appears to be employed in the formation of the chromosomes; no visible plasmosome remains.
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    New York, NY : Wiley-Blackwell
    Journal of Morphology 40 (1925), S. 417-459 
    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: The development and cytology of cartilage and bone in the limbs from the fifty-second hour of incubation to the first day after hatching are described.The chief points of interest arising from this study are: (1) Chondroblasts when liberated during cartilage resorption die and disintegrate. (2) All the long bones possess structures which, though not undergoing independent ossification, are homologous with the mammalian epiphyses. (3) Endochondral ossification occurs only in the epiphyses and ends of the diaphyses. (4) The marrow cavity contains multinucleated giant cells which appear to be formed by the fusion of degenerating cells.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    New York, NY : Wiley-Blackwell
    Journal of Morphology 40 (1925), S. 169-189 
    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: A review of the literature of the gastric glands of reptiles shows marked differences of opinion concerning the nature and character of the cells composing the gastric glands.The present investigation of the gastric glands of the alligator has been carried out by histochemical and physiological experiments, rather than by the usual morphological methods, but the results can be stated both in terms of structure and function.1The surface epithelial cells and those lining the gland pits in the fundic, cardiac, and pyloric regions of the stomach of the alligator are not strictly comparable functionally to the mucous cells of mammals.2The cells composing the necks and bodies of the glands in the fundus, according to histochemical reactions, are parietal cells.3Certain cells lying beneath the columnar epithelial cells lining the lumen of the stomach and the foveolae react to one method of fixation and staining as do the chief cells of mammalian material.4The results of the experiment with the vital dye, neutral red, show that the cells of the gastric pits, the necks and bodies of the glands in the fundus of the alligator's stomach, react identically as those of the mammalian stomach.5The gastric juice of the alligator is acid to litmus-paper and contains a free mineral acid.
    Type of Medium: Electronic Resource
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