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Articles 111391 - 111420 of 114033
Full-Text Articles in Entire DC Network
Active Projects In The United States And Canada Dealing With Grasshopper Research, H.C. Severin
Active Projects In The United States And Canada Dealing With Grasshopper Research, H.C. Severin
Agricultural Experiment Station Entomology Pamphlets (1940-1952)
The sixteenth annual meetings of the Rocky Mountain Conference of Entomologists were held at Cameron Pass, Colorado, August 17 to August 21, 1941. Some time was devoted during these meetings to a discussion of the research work that is being done at the present with grasshoppers. It was felt by those participating in the discussions that it would be highly desirable if certain data were available concerning grasshopper research projects that are being actively investigated at the present time in the United States and in Canada. The author if this paper was asked to assume the responsibility of formulating an …
The Farm Labor Situation In South Dakota As Of October 17, 1942, Walter L. Slocum, Gabriel Lundy
The Farm Labor Situation In South Dakota As Of October 17, 1942, Walter L. Slocum, Gabriel Lundy
Agricultural Experiment Station Mimeograph Pamphlets (1942)
This report is based principally on returns from 1101 farmers located in 28 South Dakota counties. The survey was conducted in an attempt to secure a representative and objective picture of the 1942 farm labor situation, the probable 1943 farm labor situation and the influence of present and probable labor and machinery shortages on farm production plans for 1943. The reports from the 1101 farmers cover only their farms.
Some Aspects Of Evolutionary Theory, George M. Robertson
Some Aspects Of Evolutionary Theory, George M. Robertson
Fort Hays Studies Series
The present contribution is not a unified account, but is a series of essays dealing with some aspects, but is a series of essays dealing with some aspects of evolutionary theory.
Bulletin No. 306 - Report Of The Agricultural Experiment Station Utah State Agricultural College, Logan, R. H. Walker
Bulletin No. 306 - Report Of The Agricultural Experiment Station Utah State Agricultural College, Logan, R. H. Walker
UAES Bulletins
The agricultural experiment stations have contributed in a very material way to the progress of agriculture in the United States not only by the development of better crops and livestock and production practices, but, through basic research on the many and varied problems of agriculture, they have furnished an understanding of those principles upon which progress must depend.
The permanent value of these research centers to the progress of agriculture is no better illustrated than in the present emergency. The ability of farmers to meet the tremendous additional contributions to defense in the way of increased food supplies is dependent …
Kentucky Warbler (Vol. 18, No. 1), Kentucky Library Research Collections
Kentucky Warbler (Vol. 18, No. 1), Kentucky Library Research Collections
The Kentucky Warbler
No abstract provided.
The Incidence Of Trichinella Spiralis In The Diaphragms Of Swine From The Louisville Abattoirs., Stuart Lyle Adams
The Incidence Of Trichinella Spiralis In The Diaphragms Of Swine From The Louisville Abattoirs., Stuart Lyle Adams
Electronic Theses and Dissertations
Trichinosis is a disease caused by the parasitic nematode Trichinella spiralis. When meat containing encysted larvae is consumed the cysts are dissolved by the action of the gastric juice in the stomach and the larvae migrate to the intestine where they mature, copulate and give birth to living young within a week of the original infection. The larvae enter the lymph spaces and are carried to the thoracic duct from which they reach the venous circulation and thence the arterial circulation by way of the heart and the pulmonary capillaries. From the arterial blood the larvae enter most of the …
Agricultural Research In South Dakota: Fifty-Fifth Annual Station Report, July 1 1941 - June 30 1942, South Dakota State College Of Agriculture And Mechanic Arts
Agricultural Research In South Dakota: Fifty-Fifth Annual Station Report, July 1 1941 - June 30 1942, South Dakota State College Of Agriculture And Mechanic Arts
Agricultural Experiment Station and Research Farm Annual Reports
No abstract provided.
Index To Volume X, Jane B. Swenk
Index To Volume X, Jane B. Swenk
Nebraska Bird Review
Aegialtis meloda, 34, 35; meloda circumcintus, 34, 35, 36.
Adams, Miss Beulah, article by, 52.
Ajaia ajaia, 52.
Andrena swenki, 5.
Annual Meeting, 43rd Minutes of, 22–25.
Avocet, 46.
. . .
Woodpecker, Downy, 26, 27, 28, 30, 49, 55; Eastern Hairy, 26, 27, 28, 30, 49, 55; Ivory-billed, 54; Lewis’s, 54; Red-bellied, 25, 26, 28, 49; Red-headed, 26, 27, 28, 30, 49.
Wren, Bewick’s, 50; House, 26, 27, 28, 30, 50.
Yellow-legs, Greater, 26, 48; Lesser, 25, 26, 28, 30, 48.
Yellow-throat, Northern, 26, 27, 28, 50; Western, 30.
Nebraska Bird Review (January-June 1942) 10(1), Whole Issue
Nebraska Bird Review (January-June 1942) 10(1), Whole Issue
Nebraska Bird Review
Contents
Myron Harmon Swenk, A Biography, By Harry C. Oberholser.. 1
Distribution and Migration of the Solitary Sandpiper in Nebraska, By Myron H. Swenk and Edson Fichter.............. 15
Minutes of the Forty-third Annual Meeting ....................... 22
Report on the Fortieth Annual Field Day ...................................... 25
General Notes ....................................................................................... 30
Farm Tenure In South Dakota [:] Some Of Its Economic And Sociological Aspects, Alvin E. Coons, Walter L. Slocum
Farm Tenure In South Dakota [:] Some Of Its Economic And Sociological Aspects, Alvin E. Coons, Walter L. Slocum
Agricultural Experiment Station Mimeograph Pamphlets (1942)
Almost without exception county land-use planning committees have listed tenancy among the more important land-use problems in South Dakota. This concern is due to the increase in tenancy, to the growing obstacles in the way of those who wish to become land owners and to some extent to the existence of unsatisfactory relationships between landlord and tenant. Tenancy, however, is only one aspect of the much broader land tenure picture which includes all phases of the control and use of the land. To become a farm owner has long been considered a desirable and legitimate ambition of farm operators, or …
The Effect Of Climate And Different Grazing And Dusting Intensities Upon The Yield Of The Short Grass Prairies In West Central Kansas, Marvin L. Lacey
The Effect Of Climate And Different Grazing And Dusting Intensities Upon The Yield Of The Short Grass Prairies In West Central Kansas, Marvin L. Lacey
Master's Theses or Doctor of Nursing Practice
The purpose of this problem was to determine the effect of climate, amount of dusting, and degree of grazing by livestock and grasshoppers upon the quantity and quality of forage produced by various short grass pastures in west-central Kansas.
History Of The Native Vegetation Of Western Kansas During Seven Years Of Continuous Drought, F. W. Albertson, J. E. Weaver
History Of The Native Vegetation Of Western Kansas During Seven Years Of Continuous Drought, F. W. Albertson, J. E. Weaver
Department of Agronomy and Horticulture: Faculty Publications
When the pioneers came from the East to make new homes in the Great Plains region, they found a dense cover of native vegetation. It was disturbed only by buffaloes, prairie dogs, other plains animals, Indians, and prairie fires. The Federal Government required that a certain amount of land be broken and put under cultivation, whether the land was obtained as a homestead or as a timber claim (McArdle and Costello, 1936).
The practice of the settlers was to break up a small tract of the prairie on which they could grow enough winter feed to sustain their cattle, horses, …
Threonine Deficiency In Hydrolysates Of Zein Prepared By Autoclaving, Raymond Borchers, John R. Totter, Clarence P. Berg
Threonine Deficiency In Hydrolysates Of Zein Prepared By Autoclaving, Raymond Borchers, John R. Totter, Clarence P. Berg
Department of Biochemistry: Faculty Publications
In a previous paper (Borchers and Berg, 1942) we showed that
autoclaving zein with sulfuric acid longer than necessary for complete
hydrolysis causes destruction and racemization; either of
these might account for the failure of such a hydrolysate to
promote growth in young rats when substituted for a hvdrolysate,
prepared by refiuxing, in a diet which produced moderate growth.
It seemed to us that this deterioration in the dietary protein might
well be the result primarily of essential amino acid deficiencies
which could be detected and overcome by appropriate supplementation.
Because threonine is known to be present in zein in …
Tryptophane Metabolism X. The Effect Of Feeding 1(-)-, Dl-, And D(+)-Tryptophane, D(-)And Dl-(Β-3-Indolelactic Acid,(Β-3-Indolepyruvic Acid, And L(-)Kynurenine Upon The Storage Of Liver Glycogen And The Urinary Output Of Kynurenic Acid, Kynurenine, And Total Acetone Bodies, Raymond Borchers, Clarence P. Berg, Newton E. Whitman
Tryptophane Metabolism X. The Effect Of Feeding 1(-)-, Dl-, And D(+)-Tryptophane, D(-)And Dl-(Β-3-Indolelactic Acid,(Β-3-Indolepyruvic Acid, And L(-)Kynurenine Upon The Storage Of Liver Glycogen And The Urinary Output Of Kynurenic Acid, Kynurenine, And Total Acetone Bodies, Raymond Borchers, Clarence P. Berg, Newton E. Whitman
Department of Biochemistry: Faculty Publications
The amount of tryptophane required for maintenance and growth is small (2). When an excess is supplied to some animals, kynurenic acid is excreted (3) and, under certain conditions, kynurenine also (4). Although these are quantitatively the most important of the known metabolic products of tryptophane, the amounts excreted in extensive tests in the dog and rabbit have usually accounted for less than half, more often for less than a third, of the tryptophane administered (4-6).
A Study Of The Flowering Plants Of The Plymouth-Bridgeport Area Of Amador And El Dorado Counties, California, Eldridge P. Lawrence
A Study Of The Flowering Plants Of The Plymouth-Bridgeport Area Of Amador And El Dorado Counties, California, Eldridge P. Lawrence
University of the Pacific Theses and Dissertations
Not until 1933 did the classification of Amador's flowering plants appeal to him as a project for future study. In that year, he had his first class in Taxonomic Botany at the University of California. Collecting hin this territory was a definite advantage to him as his acquaintance with the land owners enabled him to trespass and collect without question. HIs acquaintance with the territory also made it possible for him to know where many specimens of infrequent occurrence were to be found. Had he been unfamiliar with the territory certainly many of these would have been missed.
This thesis …
Tillage Methods In Grasshopper Control, Gerald B. Spawn
Tillage Methods In Grasshopper Control, Gerald B. Spawn
Agricultural Experiment Station Entomology Pamphlets (1940-1952)
In the light of the present world food situation, the control of insects assumes a role of major importance in the agricultural program. Various insects, among which grasshoppers are one of the most notorious, attack our growing groups, upon which we depend for food. Others attack grains in storage; plant and animal products of many kinds; clothing and articles of furniture; and our domestic livestock. Man himself is not immune from attack as is borne out of by the epidemics of louse transmitted typhus which are today growing in extent in certain parts of Europe. The losses sustained by mankind …
Geology Of Dallas County Texas, Claude C. Albritton Jr.
Geology Of Dallas County Texas, Claude C. Albritton Jr.
Field and Laboratory
At the regular monthly noon meeting of the Dallas Petroleum Geologists on Monday, May 5, 1941, a motion was passed authorizing the president to appoint a committee to work on a project which would culminate in a bulletin on the geology of Dallas County, Texas, to be in printed form prior to the annual meeting of the American Association for the Advancement of Science to be held in Dallas, Texas from December 29, 1941 to January 3, 1942. Those members appointed to the general committee were Messrs. C. C. Albritton, Jr. of Southern Methodist University, Robert I. Seale of Schlumberger …
Bulletin No. 300 - A Study Of Farm Organization By Type Of Farm In Sanpete And Sevier Counties, W. Preston Thomas, George T. Blanch, Edith Hayball
Bulletin No. 300 - A Study Of Farm Organization By Type Of Farm In Sanpete And Sevier Counties, W. Preston Thomas, George T. Blanch, Edith Hayball
UAES Bulletins
This study is one of a series being conducted by the Department of Agricultural Economics which are designed to furnish a general description and a detailed analysis of the type of farming in various parts of Utah. The specific purpose of the general state-wide study is to: (1) locate and delineate the major type-of-farming areas of the state; (2) analyze and describe the major and some minor types of farming within each area; and (3) indicate the fundamental reasons for the principal differences which exist within and among these type-of-farming areas.
Upon the completion of the first part of the …
Bulletin No. 4: The Connecticut Arboretum, Its Tenth Anniversary, George S. Avery
Bulletin No. 4: The Connecticut Arboretum, Its Tenth Anniversary, George S. Avery
Bulletins
No abstract provided.
Kentucky Warbler (Vol. 17, No. 4), Kentucky Library Research Collections
Kentucky Warbler (Vol. 17, No. 4), Kentucky Library Research Collections
The Kentucky Warbler
No abstract provided.
Babcock Testing And Other Methods Of Analyzing Dairy Products, L. K. Crowe
Babcock Testing And Other Methods Of Analyzing Dairy Products, L. K. Crowe
Nebraska Agricultural Experiment Station: Historical Circulars
The manufacturing of dairy products on a commercial scale began about the middle of the nineteenth century and was greatly stimulated by the development of the centrifugal cream separator in the late eighties. The invention of the Babcock test in the early nineties overcame some of the difficulties that had developed in paying for milk upon its butterfat content, since it was early recognized that milk varied widely in that respect.
Judging Quality In Dairy Products, P. A. Downs
Judging Quality In Dairy Products, P. A. Downs
Nebraska Agricultural Experiment Station: Historical Circulars
In the dairy industry increasing attention is being paid to the question of quality of products. The well established system of buying and selling butter and cheese on the basis of quality by score or grade is practiced in the principal markets of the world. The other dairy products, while not marketed by score, are receiving more and more attention in this respect. As more information becomes available and the judging better standardized, other dairy products will doubtless be sold by grade.
Milk, The Food Of Foods, Laura C. Pepper
Milk, The Food Of Foods, Laura C. Pepper
Pamphlets
This pamphlet was published by the authority of the Hon. James G. Gardiner, Minister of Agriculture, Ottawa, Canada. It is recorded as Publication 635, Household bulletin 19.
The pamphlet was produced to promote the nutritional benefits and value of milk in the diet. The various types of milk are listed. There are chapters dealing with the care of milk from producer to consumer, consumption and uses of milk. There are recipes for sauces, soups, lunch and dinner dishes milk shakes and milk dishes for the convalescent.
Kentucky Warbler (Vol. 17, No. 3), Kentucky Library Research Collections
Kentucky Warbler (Vol. 17, No. 3), Kentucky Library Research Collections
The Kentucky Warbler
No abstract provided.
Nebraska Bird Review (July-December 1941) 9(2) Whole Issue
Nebraska Bird Review (July-December 1941) 9(2) Whole Issue
Nebraska Bird Review
Contents
Myron H. Swenk .................................. 25
The Role of Owl Pellet Analyses in Faunistics
By Edson Fichter ................................................ 26
Present Day' Bird Life Along the Missouri River Compared With Say's and Audubon's Findings By F. W. Haecker and R. Allyn Moser .................................... 31
Cooperative Migration List For Spring of 1941 ................................ 35
General Notes ................................................................ 41
List of Members ............................................. 46
Activity Of Papain On Gelatin Mixtures, Edward J. Ruschmann
Activity Of Papain On Gelatin Mixtures, Edward J. Ruschmann
Bachelors’ Theses
Within the Marquette chemical laboratories under the direction and supervision of Dr. John R. Koch, professor and head of the Chemistry Department, many noteworthy advances in enzyme chemistry have been achieved. A new type all glass, single unit viscometer was developed and perfected by Koch and now is the basis of the study of enzyme activity by viscometric methods. The use of this viscometer is not limited solely to work in these laboratories but has also been used with great success in bating and brewing.
The Early Basis Of Subsistence Of Indians In The Plains Area, Joe D. Reed
The Early Basis Of Subsistence Of Indians In The Plains Area, Joe D. Reed
Biology ETDs
The fundamental purpose of this paper is to present the picture of early food economy among the Indians of the Plains. In order to accomplish this task the procedure has been to present: (1) a brief study of the tribal groups with special emphasis upon their early history and movements, followed by (2) a general picture of Plains food economy with regard to the sequence and tribal units. The important subjects within this second category have to do with buffalo utilization, agriculture and the gathering to wild plant food; (3) a listing of the various wild plant and animal foods …
Bulletin No. 298 - Wool Scouring Tests In Utah, Alma C. Esplin, Ralph W. Phillips, Milton A. Madsen
Bulletin No. 298 - Wool Scouring Tests In Utah, Alma C. Esplin, Ralph W. Phillips, Milton A. Madsen
UAES Bulletins
Wool, as it is shorn from the sheep, is known as grease wool. The first step in the manufacturing of wool is scouring, or removal of all grease and foreign matter. Within any given grade, as determined by length of staple and fineness of fiber, the yield of clean wool is the primary factor in determining the value of the original grease wool. The price of scoured or clean wool is multiplied by the percentage yield of clean wool to determine the value of the grease wool.
Bulletin No. 297 - Pale Western Cutworm, C. J. Sorenson, H. F. Thornley
Bulletin No. 297 - Pale Western Cutworm, C. J. Sorenson, H. F. Thornley
UAES Bulletins
THE PALE WESTERN CUTWORM ( Agrotis orthogonia Morr.) has caused periodic damage to dry-farm grains in Utah during the past 25 years. In the spring of 1916, entomologists of the Utah Agricultural Experiment Station were asked to determine the cause of large bare spots occurring in fields of fall-planted wheat in the Indianola district of Sanpete County. A moderately severe infestation of pale western cutworm was found to be the causative agent. Pack reported that during the spring of 1929 this insect had inflicted serious damage to fall wheat at Fairview, Sanpete County.
Regeneration Of Native Midwestern Pastures Under Protection, J. E. Weaver, W. W. Hansen
Regeneration Of Native Midwestern Pastures Under Protection, J. E. Weaver, W. W. Hansen
Department of Agronomy and Horticulture: Faculty Publications
The origin of native midwestern pastures from virgin prairie and the degeneration of the prairie under long-continued grazing have been outlined in some detail in a previous bulletin (Weaver & Hansen 1941). During the last four years much study has been given to the converse phenomenon of the regeneration of native midwestern pastures when grazing animals were excluded. This universal phenomenon of the return of vegetation to something of its former natural condition is summed up in the term plant succession (Clements 1928). In connection with pastures derived from true prairie, it is of great practical as well as scientific …