scholarly journals The Effects of Various Spinning Processes on the Fine Structure of Viscose Rayon Staples (Distribution of Chain Length of Oxidizing-hydrolyzed Residue)

1961 ◽  
Vol 34 (4) ◽  
pp. 476-480 ◽  
Author(s):  
Taketoshi K\={o}shiro ◽  
Toshikazu Fujimura
1962 ◽  
Vol 18 (8) ◽  
pp. 662-664,657
Author(s):  
Saburo Okajima ◽  
Akio Nagai ◽  
Akira Enomoto

1957 ◽  
Vol 13 (5) ◽  
pp. 318-321
Author(s):  
Sadataka Mukoyama ◽  
Yoshizo Tsuda
Keyword(s):  

1962 ◽  
Vol 18 (8) ◽  
pp. 657-662
Author(s):  
Saburo Okajima ◽  
Akio Nagai

Weed Science ◽  
1993 ◽  
Vol 41 (1) ◽  
pp. 87-93 ◽  
Author(s):  
Moritz Knoche ◽  
Martin J. Bukovac

The effect of oxyethylene (OE) chain length of three homologous series of nonionic surfactants (allinol, nonoxynol, octoxynol) on glyphosate uptake was markedly affected by the leaf surface fine-structure of sugarbeet and kohlrabi. Adaxial leaf surfaces of sugarbeet were covered with a layer of amorphous wax, whereas the adaxial surface of kohlrabi leaves was covered with fine crystalline wax. Foliar uptake of glyphosate (1 mM glyphosate, 20 mM glycine, pH 3.2) averaged 4% for sugarbeet without surfactant, but droplets were not retained by kohlrabi leaves in the absence of a surfactant. Glyphosate absorption with octoxynol (9 to 10 OE units, 0.5 g L−1) was rapid initially (0 to 2 h) and leveled off about 2 h after application in both species. Absorption by sugarbeet decreased from 12 to 3% as OE content of octoxynol was increased from 5 to 30 OE units. In contrast, surfactants of intermediate OE content (octoxynol, 16 OE units) induced the greatest uptake (17%) on kohlrabi. Leaf wetting was markedly affected by surfactant and leaf surface. As OE content of octoxynol increased from 5 to 30 OE units, droplet/leaf interface areas of 1-μl droplets decreased from 4 to 3 mm2 on the adaxial leaf surface of sugarbeet and from 61 to 2 mm2 on kohlrabi. Concurrently, the rate of droplet evaporation (1 μl) decreased from 1.0 to 0.7 nl s−1 on sugarbeet and 4.2 to 0.5 nl s−1 on kohlrabi leaves. The effect of OE content on enhancement of glyphosate uptake and wetting characteristics of spray solutions was similar within species for different hydrophobic moieties but differed markedly between species.


1946 ◽  
Vol 17 (11) ◽  
pp. 924-939 ◽  
Author(s):  
H. G. Ingersoll
Keyword(s):  

Author(s):  
W. H. Zucker ◽  
R. G. Mason

Platelet adhesion initiates platelet aggregation and is an important component of the hemostatic process. Since the development of a new form of collagen as a topical hemostatic agent is of both basic and clinical interest, an ultrastructural and hematologic study of the interaction of platelets with the microcrystalline collagen preparation was undertaken.In this study, whole blood anticoagulated with EDTA was used in order to inhibit aggregation and permit study of platelet adhesion to collagen as an isolated event. The microcrystalline collagen was prepared from bovine dermal corium; milling was with sharp blades. The preparation consists of partial hydrochloric acid amine collagen salts and retains much of the fibrillar morphology of native collagen.


Author(s):  
E. Horvath ◽  
K. Kovacs ◽  
G. Penz ◽  
C. Ezrin

Follicular structures, in the rat pituitary, composed of cells joined by junctional complexes and possessing few organelles and few, if any, secretory granules, were first described by Farquhar in 1957. Cells of the same description have since been observed in several species including man. The importance of these cells, however, remains obscure. While studying human pituitary glands, we have observed wide variations in the fine structure of follicular cells which may lead to a better understanding of their morphogenesis and significance.


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