Resistance Factor Determination, Quantitative Estimation of the Resistance Factor, 6-Methoxybenzoxazolinone, in Corn Plant Tissue

1957 ◽  
Vol 5 (12) ◽  
pp. 933-935 ◽  
Author(s):  
S. D. Beck ◽  
E. T. Kaske ◽  
E. E. Smissman
Keyword(s):  
Plant Tissue ◽  
Quantitative Estimation ◽  
Resistance Factor ◽  
Corn Plant

Quantitative Estimation of Chlorides and Sulphates in Expressed Plant Tissue Fluids

1924 ◽  
Vol 77 (1) ◽  
pp. 96-102
Author(s):  
Ross Aiken Gortner ◽  
Walter F. Hoffman
Keyword(s):  
Plant Tissue ◽  
Quantitative Estimation ◽  
Tissue Fluids

Notes - Corn Plant Resistance Factor

1957 ◽  
Vol 22 (2) ◽  
pp. 220-220 ◽  
Author(s):  
Edward Smissman ◽  
Jules LaPidus ◽  
Stanley Beck
Keyword(s):  
Plant Resistance ◽  
Resistance Factor ◽  
Corn Plant

Freeze-fracture, freeze-etch complementary pairs of virus-infected cells reveal value of etching even when relatively high concentrations of cryoprotectants are used

1978 ◽  
Vol 36 (2) ◽  
pp. 136-137
Author(s):  
Russell L. Steere ◽  
Eric F. Erbe
Keyword(s):  
Plant Tissue ◽  
Phosphate Buffer ◽  
Infected Plant ◽  
Freeze Fracture ◽  
Distilled Water ◽  
Virus Infected Plant ◽  
Infected Cells ◽  
High Concentrations

It has been assumed by many involved in freeze-etch or freeze-fracture studies that it would be useless to etch specimens which were cryoprotected by more than 15% glycerol. We presumed that the amount of cryoprotective material exposed at the surface would serve as a contaminating layer and prevent the visualization of fine details. Recent unexpected freeze-etch results indicated that it would be useful to compare complementary replicas in which one-half of the frozen-fractured specimen would be shadowed and replicated immediately after fracturing whereas the complement would be etched at -98°C for 1 to 10 minutes before being shadowed and replicated.Standard complementary replica holders (Steere, 1973) with hinges removed were used for this study. Specimens consisting of unfixed virus-infected plant tissue infiltrated with 0.05 M phosphate buffer or distilled water were used without cryoprotectant. Some were permitted to settle through gradients to the desired concentrations of different cryoprotectants.

Freeze-Fracture Studies of Membranes in Developing Sieve Elements in a Plant Tissue Culture

1980 ◽  
Vol 38 ◽  
pp. 636-637
Author(s):  
R. D. Sjolund ◽  
C. Y. Shih
Keyword(s):  
Plant Tissue ◽  
Cultured Cells ◽  
Freeze Fracture ◽  
Tissue Cultures ◽  
Sieve Elements ◽  
Intact Plants ◽  
Plant Tissue Cultures ◽  
Whole Plants ◽  
Energy Dependent ◽  
Similar Elements

The differentiation of phloem in plant tissue cultures offers a unique opportunity to study the development and structure of sieve elements in a manner that avoids the injury responses associated with the processing of similar elements in intact plants. Short segments of sieve elements formed in tissue cultures can be fixed intact while the longer strands occuring in whole plants must be cut into shorter lengths before processing. While iyuch controversy surrounds the question of phloem function in tissue cultures , sieve elements formed in these cultured cells are structurally similar to those of Intact plants. We are particullarly Interested In the structure of the plasma membrane and the peripheral ER in these cells because of their possible role in the energy-dependent active transport of sucrose into the sieve elements.

Development of Plant Tissue Culture Profile of Dioscorea deltoidea

Planta Medica ◽  
2013 ◽  
Vol 79 (05) ◽  
Author(s):  
M Mujeeb ◽  
M Amir ◽  
AS Nadeem ◽  
M Aqil ◽  
AK Najmi ◽  
...  
Keyword(s):  
Tissue Culture ◽  
Plant Tissue Culture ◽  
Plant Tissue ◽  
Dioscorea Deltoidea

Plasma Fibrin Stabilising Factor (F. S. F.) Activity in Normal Subjects and Patients with Chronic Liver Disease

1969 ◽  
Vol 21 (01) ◽  
pp. 134-143 ◽  
Author(s):  
W. D Walls ◽  
M. S Losowsky
Keyword(s):  
Liver Disease ◽  
Chronic Liver Disease ◽  
Clinical Improvement ◽  
Quantitative Estimation ◽  
Kinetic Method ◽  
Normal Subjects ◽  
Chronic Liver ◽  
Clinical Severity ◽  
Plasma Fibrinogen ◽  
Normal Range

SummaryA kinetic method for the quantitative estimation of plasma F.S.F. activity is described and discussed.This method was applied to normal subjects and to patients with chronic liver disease. The plasma F.S.F. activity was uninfluenced by either sex or age, and the normal range has been defined.A significant decrease in plasma F.S.F. activity was observed in patients with chronic liver disease. Subnormal levels of activity were found in 25% of such patients but were unrelated to episodes of abnormal haemorrhage. Plasma F.S.F. activity tended to be lower in patients with disease of greater clinical severity. In 2 patients showing clinical improvement there was an increase in plasma F. S. F. activity.It was confirmed that plasma fibrinogen levels increase with age.

Social development of modern Russia: trends, risks, prospects

2018 ◽  
pp. 76-89
Author(s):  
E. M. Avraamova ◽  
V. N. Titov
Keyword(s):  
Middle Class ◽  
Social Development ◽  
Social Structure ◽  
Structure Formation ◽  
Resource Availability ◽  
Social Dynamics ◽  
Quantitative Estimation ◽  
Resource Potential ◽  
Institutional Conditions ◽  
Resource Characteristics

The analysis of present-time directions in the study of social development has allowed to identify the resource approach as the most productive one which enables to assess social dynamics through the range of resource characteristics of different population groups and abilities of the relevant groups to apply development resources in the current economic and institutional conditions. Basing on the sociological survey conducted by ISAP RANEPA, the quantitative estimation of material and social recourses of the population has been made; integral values of the resource potential have been calculated as well. The issues of social structure formation are analyzed through the aspect of resource availability; the barriers of Russian middle-class enlargement are defined.

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