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Articles 25801 - 25830 of 26263
Full-Text Articles in Entire DC Network
End Matter, Vol. 3 No. 4
Brigham Young University Science Bulletin, Biological Series
No abstract provided.
Ticks Of The Nevada Test Site, D Elden Beck, Dorald M. Allred, Elias P. Brinton
Ticks Of The Nevada Test Site, D Elden Beck, Dorald M. Allred, Elias P. Brinton
Brigham Young University Science Bulletin, Biological Series
No abstract provided.
End Matter, Vol. 4 No. 1
Brigham Young University Science Bulletin, Biological Series
No abstract provided.
End Matter, Vol. 3 No. 3
Brigham Young University Science Bulletin, Biological Series
No abstract provided.
Front Matter, Vol. 4 No. 1
Brigham Young University Science Bulletin, Biological Series
No abstract provided.
Front Matter, Vol. 3 No. 2
Brigham Young University Science Bulletin, Biological Series
No abstract provided.
Solpugida Of The Nevada Test Site, Martin Hammond Muma
Solpugida Of The Nevada Test Site, Martin Hammond Muma
Brigham Young University Science Bulletin, Biological Series
Study of nearly 1,000 specimens of solpugids collected in 1960, 1961, and 1962 from Mercury, Nevada, resulted in the identification and placement of 395 adults in 28 species. Eight new species are described and figured. Two new synonymies, resulting from proper association of males and females, are cited. Study of the seasonal distribution and relative abundance of the sexes of 12 common species has prompted general and specific deductions concerning the essentially unknown biology of North American solpugids. Systematic collection data furnished ecological information concerning the 12 common species.
Front Matter, Vol. 2 No. 3, Parts 2 & 3
Front Matter, Vol. 2 No. 3, Parts 2 & 3
Brigham Young University Science Bulletin, Biological Series
No abstract provided.
Hard-Bodied Ticks Of The Western United States. Parts Ii And Iii, Elias P. Brinton, D Elden Beck
Hard-Bodied Ticks Of The Western United States. Parts Ii And Iii, Elias P. Brinton, D Elden Beck
Brigham Young University Science Bulletin, Biological Series
No abstract provided.
End Matter, Vol. 3 No. 2
Brigham Young University Science Bulletin, Biological Series
No abstract provided.
End Matter, Vol. 2 No. 3, Parts 2 & 3
End Matter, Vol. 2 No. 3, Parts 2 & 3
Brigham Young University Science Bulletin, Biological Series
No abstract provided.
A Study Of Puccinia Graminis And Cronartium Ribicola, Duane W. Hughes
A Study Of Puccinia Graminis And Cronartium Ribicola, Duane W. Hughes
Graduate Student Research Papers
It was the purpose of this study (1) to review the literary history of rusts in the United States and in the Northwest in particular, ( 2) to learn where rusts generally are found geographically, (3) to gain further information regarding the etiology of wheat rust (Puccinia graminis tritici), of white pine blister rust (Cronartium ribicola) and to become enlightened on other rusts, (4) to learn ways of controlling the two rusts, black stem rust of wheat and white pine blister rust, and to gain an appreciation of the economic importance of rust prevention.
End Matter, Vol. 3 No. 1
Brigham Young University Science Bulletin, Biological Series
No abstract provided.
Birds Of The Nevada Test Site, C. Lynn Hayward, Merlin L. Killpack, Gerald L. Richards
Birds Of The Nevada Test Site, C. Lynn Hayward, Merlin L. Killpack, Gerald L. Richards
Brigham Young University Science Bulletin, Biological Series
No abstract provided.
Front Matter, Vol. 3 No. 1
Brigham Young University Science Bulletin, Biological Series
No abstract provided.
Acer Pensylvanicum L., John E. Ebinger
Front Matter, Vol. 2 No. 4
Brigham Young University Science Bulletin, Biological Series
No abstract provided.
End Matter, Vol. 2 No. 4
Brigham Young University Science Bulletin, Biological Series
No abstract provided.
Nevada Test Site Study Areas And Specimen Depositories, Dorald M. Allred, D Elden Beck, Clive D. Jorgensen
Nevada Test Site Study Areas And Specimen Depositories, Dorald M. Allred, D Elden Beck, Clive D. Jorgensen
Brigham Young University Science Bulletin, Biological Series
No abstract provided.
Leaf Ribonuclease Activity As Related To Virus Infection, And Ribonucleic Acid Concentration, Andrew Chien-Yau Hsu
Leaf Ribonuclease Activity As Related To Virus Infection, And Ribonucleic Acid Concentration, Andrew Chien-Yau Hsu
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Ribonucleic acid (RNA) appears to be the entity responsible for infectivity and genetic continuity in certain plant, animal and bacterial viruses. RNA also plays an important role in protein synthesis. The enzymes which are involved in RNA synthesis and degradation have received much attention. Among these enzymes ribonuclease (RNase) has been most thoroughly studied Rnase is widely distributed and has been isolated from many sources such as snake venom, bacteria, the pancreas, and many plant and animal tissues. Most studies with RNase have been concerned with its role in the hydrolysis of RNA in vitro. Therefore, it has generally been …
The Respiratory Chain Involved In Oxidative Phosphorylation On Higher Plants In Relation To Carbon Dioxide-Bicarbonate Inhibition, Wan-Jean Young
The Respiratory Chain Involved In Oxidative Phosphorylation On Higher Plants In Relation To Carbon Dioxide-Bicarbonate Inhibition, Wan-Jean Young
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Increased concentrations of CO2 with the accompanying high bicarbonate level in the culture medium have been reported to have a depressing effect in certain plant species on growth (34), respiration (23, 33), oxidative phosphorylation (9), mineral nutrient absorption (17), certain enzymatic reactions (4, 22, 27), accumulation of organic and amino acids (11), and protein synthesis (16). Since accumulation of organic acids occurs in lime-induced chlorotic tissue together with a depression in the respiration of plant tissue, an effect on the energy transfer mechanism of such plants is suspected. Inhibition of electron transfer from the substrate level could result in …
Biosynthesis Of Infectious Cucumber Mosaic Virus Ribonucleic Acid In A Cell-Free Medium, Men Hui Lee
Biosynthesis Of Infectious Cucumber Mosaic Virus Ribonucleic Acid In A Cell-Free Medium, Men Hui Lee
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
The mechanism of biosynthesis of the nucleic acids, RNA, remained obscure until 1955 when the announcement was made (14) that an enzyme isolated from bacterial sources catalyzes the synthesis of ribopolynucleotides from nucleoside-5'-diphosphates. It has been shown that the biosynthesis of polynucleotides occurs through the stepwise polymerization of nucleoside-5'-diphosphates or triphosphates. A great deal of research over the past few years has indicated that isolated nuclei from both animal (1) and plant (19) sources are able to synthesize ribonucleic acids in vitro (18).
Infrared Spectroscopy As Applied To The Study Of Biochemical Changes Induced By Tobacco Mosaic Virus In Leaf Cells, Banavara Krishnappa Chandrasekhar
Infrared Spectroscopy As Applied To The Study Of Biochemical Changes Induced By Tobacco Mosaic Virus In Leaf Cells, Banavara Krishnappa Chandrasekhar
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
The biochemical reactions occurring during the early stages in the infection cycle of a plant virus are still unknown. Many studies involving bacteriophage and animal viruses that have been made in recent years have provided evidence of the nature of virus infection, but these have not been of much value in understanding the nature of plant viruses. Infrared spectroscopy applied to the study of viral infection processes by Chochran and his co-workers (1960, 1962) have given some clues about the nature of biochemical changes taking place in the leaf tissues as a result of infection with cucumber mosaic virus and …
The Biochemical Differences Associated With Iron Chlorosis In Higher Plants, Daniel Ming-Yi Teng
The Biochemical Differences Associated With Iron Chlorosis In Higher Plants, Daniel Ming-Yi Teng
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Chlorosis, which is associated with a reduction in the chlorophyll content of leaves, is a major problem in the growing of deciduous fruit trees and some field crops on calcareous soil. Under various soil conditions more than one factor may be involved in the development of chlorosis in plants. A deficiency of magnesium, manganese, zinc or iron, and virus infections can induce chlorosis. It is also induced by the presence of high concentrations of phosphate, bicarbonate, manganese, copper, zinc, or numerous other factors.
The Inhibition Of Seedling Growth By Crop Residues In Soil Inoculated Wlth Penicillium Urticae Bainer, D. E. Behmer, T. M. Mccalla
The Inhibition Of Seedling Growth By Crop Residues In Soil Inoculated Wlth Penicillium Urticae Bainer, D. E. Behmer, T. M. Mccalla
United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications
In the Great Plains area of the United States, stubble-mulch practices have been widely used in the control of soil erosion by wind or water. Although this method of leaving crop residue on the surface has been very effective in combating erosion, depressed plant growth and reduced grain yield have often occurred in wet years. Similar growth problems have been observed during unseasonably cool, wet springs in field experiments at Lincoln, Nebraska. Because increased numbers of certain micro-organisms occur immediately beneath a decomposing surface mulch, the production of phytotoxic compounds under these conditions may well have been associated with the …
Front Matter, Vol. 2 No. 3, Part 1
Front Matter, Vol. 2 No. 3, Part 1
Brigham Young University Science Bulletin, Biological Series
No abstract provided.
End Matter, Vol. 2 No. 3, Part 1
End Matter, Vol. 2 No. 3, Part 1
Brigham Young University Science Bulletin, Biological Series
No abstract provided.
Hard-Bodied Ticks Of The Western United States. Part I, Elias P. Brinton, D Elden Beck
Hard-Bodied Ticks Of The Western United States. Part I, Elias P. Brinton, D Elden Beck
Brigham Young University Science Bulletin, Biological Series
No abstract provided.
Studies Of The Mechanisms And Sources Of Spotted Alfalfa Aphid Resistance In Ranger Alfalfa, W. L. Howe, W. R. Kehr, M. E. Mcknight, G. R. Manglitz
Studies Of The Mechanisms And Sources Of Spotted Alfalfa Aphid Resistance In Ranger Alfalfa, W. L. Howe, W. R. Kehr, M. E. Mcknight, G. R. Manglitz
Nebraska Agricultural Experiment Station: Historical Research Bulletins
Mechanisms and sources of spotted alfalfa aphid resistance in Ranger alfalfa and its five parental strains were investigated during 1957-1960.
Biotic Communities Of The Nevada Test Site, Dorald M. Allred, D Elden Beck, Clive D. Jorgensen
Biotic Communities Of The Nevada Test Site, Dorald M. Allred, D Elden Beck, Clive D. Jorgensen
Brigham Young University Science Bulletin, Biological Series
This paper consitutes a terminal report to the United States Atomic Energy Commission for Contract AT(11-1)786. It provides a listing of the fauna known to occur at the Nevada Test Site, with designation of ecological distribution and relative density. It is designed to serve as the basic faunistic reference source, in subsequent studies, related to geographical and ecological features at the test site.