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Articles 3091 - 3120 of 3160
Full-Text Articles in Life Sciences
The Development Of The Megagametophyte Of Ailanthus Altissima., Esther L. Bossung 1912-1994
The Development Of The Megagametophyte Of Ailanthus Altissima., Esther L. Bossung 1912-1994
Electronic Theses and Dissertations
No abstract provided.
The Relation Of Moisture Content To The Maximum Extraction Of Oil From Soybean Flakes., Evan Edwards
The Relation Of Moisture Content To The Maximum Extraction Of Oil From Soybean Flakes., Evan Edwards
Electronic Theses and Dissertations
No abstract provided.
A Study Of Sex Differentiation In Lebistes Reticulatus As Affected By Estradiol Stilbestrol And Pregneninolon., Esther Coogle
A Study Of Sex Differentiation In Lebistes Reticulatus As Affected By Estradiol Stilbestrol And Pregneninolon., Esther Coogle
Electronic Theses and Dissertations
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 …
Activated Carbon From Grapefruit Waste., Delbert Van Fletcher 1918-2005
Activated Carbon From Grapefruit Waste., Delbert Van Fletcher 1918-2005
Electronic Theses and Dissertations
No abstract provided.
A Study Of The Kjeldahl Method And A Modification For The Determination Of Nitrogen In Alcoholic Distillates., Margie M. Miller
A Study Of The Kjeldahl Method And A Modification For The Determination Of Nitrogen In Alcoholic Distillates., Margie M. Miller
Electronic Theses and Dissertations
No abstract provided.
The Influence Of Nutrition On Sporangial Formation In Araiospora Streptandra., Richard Curtis Webster
The Influence Of Nutrition On Sporangial Formation In Araiospora Streptandra., Richard Curtis Webster
Electronic Theses and Dissertations
No abstract provided.
A Comparison Of Various Sizes Of Inverted Vials Used In Durham Fermentation Tubes., Blanche Mae Welsh
A Comparison Of Various Sizes Of Inverted Vials Used In Durham Fermentation Tubes., Blanche Mae Welsh
Electronic Theses and Dissertations
No abstract provided.
The Efficiency Of Churn Washing Method And The Keeping Quality Of Butter As Indicated By Yeast And Mold Counts, T. Allen Evans
The Efficiency Of Churn Washing Method And The Keeping Quality Of Butter As Indicated By Yeast And Mold Counts, T. Allen Evans
Electronic Theses and Dissertations
Of all the equipment used in the manufacture of butter, no single piece has as close contact with the finished product as does the churn while at the same time no piece of equipment is more difficult to keep properly cleaned. The workers in the dairy industry have expended much time and effort attempting to build a churn which could be kept in a more satisfactory state, especially from a bacteriological point of view. As yet no satisfactory material for churn construction has been found to replace wood which at best is difficult to keep free of micro-organisms. Since it …
The Spiders Of South Dakota, Allan G. Peterson
The Spiders Of South Dakota, Allan G. Peterson
Electronic Theses and Dissertations
Spiders constitute the order of Araneida, which is one of the principal divisions of the class Arachnida. The Arachnida also includes scorpions, whipscorpions, pseudosscorpions, harvestmen, mites, and ticks. Some of the distinguishing characteristics of the Araneida are as follows: The head and thorax are consolidated into a cephalothorax. The abdomen is unsegmented and joined to the cephalothorax by a short narrow stalk. There are six pairs of appendages on the cephalothorax: chelicerae, pedipalps with heir basal masticulatory endites, and four pairs of walking legs.
The Morphogenesis Of The Pectoral Girdle Of Amblystoma Microstomum., Raymond W. Lawrence
The Morphogenesis Of The Pectoral Girdle Of Amblystoma Microstomum., Raymond W. Lawrence
Electronic Theses and Dissertations
No abstract provided.
A Cytological Study Of The Ciliated Epithelium Of Nucula Castrensis Hinds., Dorothy Blumer
A Cytological Study Of The Ciliated Epithelium Of Nucula Castrensis Hinds., Dorothy Blumer
Electronic Theses and Dissertations
Ever since the latter part of the 17th century, when ciliary movement was first observed, the study of ciliated cells has been of great interest to biologists, particularly to physiologists. In 1713 Leeuwenhoek recorded some observations he made on ciliary activity, using his primitive microscope. A knowledge of the structure and function of ciliated cells is also of importance in that branch of medicine pertaining to disorders of the respiratory passages and the movement of the ovum in the uterine tubes. The bivalve molluscs have come to be the classical example for the study of ciliated cells, both because of …
A Study Of The Effect Of Rickets Upon The Cholesterol And Fatty Acid Content Of The Brain., Willa Holzheimer 1909-1996
A Study Of The Effect Of Rickets Upon The Cholesterol And Fatty Acid Content Of The Brain., Willa Holzheimer 1909-1996
Electronic Theses and Dissertations
No abstract provided.
The Muscular Activity Of The Small Intestine During Acute Obstruction., Rudolph F. Antoncic
The Muscular Activity Of The Small Intestine During Acute Obstruction., Rudolph F. Antoncic
Electronic Theses and Dissertations
No abstract provided.
A Study Of The Relationship Between Blood Flow And Limb Volume In The Hind Limb Of The Dog., J. P. Holt
A Study Of The Relationship Between Blood Flow And Limb Volume In The Hind Limb Of The Dog., J. P. Holt
Electronic Theses and Dissertations
No abstract provided.
The Effect Of Cultivation On Certain Chemical And Physical Properties Of Some South Dakota Soils, Oscar E. Olson
The Effect Of Cultivation On Certain Chemical And Physical Properties Of Some South Dakota Soils, Oscar E. Olson
Electronic Theses and Dissertations
Soil Nutrient losses have followed closely in the paths of advancing frontiers in agriculture. Remedies for depletion as the result of overcropping were sought by George Washington, whose interest and investigation of soil nutrient losses probably represent the earliest attention given to land exploitation in the United States, which at the present time has become a problem of national concern. Soil losses have been attributed to a number of causes , among which are cropping, erosion, leaching, burning, and rapid oxidation of organic matter in the soil. Associated with soil nutrient losses, certain significant physical and chemical changes may occur …
A Study Of Mahogany., Roy A. Lawrence
A Study Of Mahogany., Roy A. Lawrence
Electronic Theses and Dissertations
No abstract provided.
The Effect Of Drugs On Experimental Renal Hypertension In The Dog., J. J. Prusmack
The Effect Of Drugs On Experimental Renal Hypertension In The Dog., J. J. Prusmack
Electronic Theses and Dissertations
No abstract provided.
The Skeletal, Muscular, Vascular, And The Digestive Systems Of The Ferret (Mustela Putorius) And A Comparison Of These Systems With Those Of The Domestic Cat (Felis Domesticus)., Arthur Pincus Skwerer
The Skeletal, Muscular, Vascular, And The Digestive Systems Of The Ferret (Mustela Putorius) And A Comparison Of These Systems With Those Of The Domestic Cat (Felis Domesticus)., Arthur Pincus Skwerer
Electronic Theses and Dissertations
No abstract provided.
Index Numbers Of South Dakota Farm Prices, Leslie Max Brown
Index Numbers Of South Dakota Farm Prices, Leslie Max Brown
Electronic Theses and Dissertations
During the last generation, index numbers have gradually gone into general use among economists, statisticians, and business men. Because a farmer is a business man, it is important that he know what the trend of farm prices have been in the past and what the current trend is, so that he may anticipate changes which statistical analysis show are taking place in his particular phase of business.The Main objective of this study is to revise the existing South Dakota Farm Price Index. In order to furnish a comparable background for the presentation of these results it was found desirable (1) …
The Abortion Of Essential Organs In The Imperfect Flowers Of Benzoin Aestivale, Norris M. Paulson
The Abortion Of Essential Organs In The Imperfect Flowers Of Benzoin Aestivale, Norris M. Paulson
Electronic Theses and Dissertations
There have been a number of investigations dealing with the abortion of essential organs in the imperfect flowers. Ulvin submitted a paper on Abortive Stamens and Carpels in Lychnis alba, Simon described stamen and carpel abortion in Cucumis stativus, Schaffner was able to control sex expression in Arisamea triphyllum and secure sex reversal in Cannabis stiva, Bessey determined the relationship of sex to the age of pollen in Cannabis sativa.
An Analysis Of Crop Production In South Dakota By Types Of Farming Areas, Warren Richards Bailey
An Analysis Of Crop Production In South Dakota By Types Of Farming Areas, Warren Richards Bailey
Electronic Theses and Dissertations
Farmers choose the crops they grow for two principal users; namely, for feed production or for cash income, or for both feed and cash income. It is true that some crops are grown for cover-crops, soil building, weed competition and a multitude of other miscellaneous purposes, many of them of equal or greater importance in the individual case than the two uses of crops which are the basis for this analysis. Crop production in South Dakota has been discussed since the first records of yields were available. the usual unit for production was the legal bushel of a specified weight.
The Anatomy, Systematic Position, Natural History And Economic Importance Of The Spoonbill Ganoid, Polyodon Spathula., Oscar H. Steinberg
The Anatomy, Systematic Position, Natural History And Economic Importance Of The Spoonbill Ganoid, Polyodon Spathula., Oscar H. Steinberg
Electronic Theses and Dissertations
No abstract provided.
An Analysis Of The Expenditures Of South Dakota Counties From 1919 To 1935, George H. Phillips
An Analysis Of The Expenditures Of South Dakota Counties From 1919 To 1935, George H. Phillips
Electronic Theses and Dissertations
Three important studies are involved in an investigation of the cost of a governmental unit. These are expenditures, receipts, and indebtedness. The result of the three studies, properly coordinated, will yield what is known in public finance as "net expenditures" or, if the government under scrutiny should meet with favorable financial conditions, the final study might result in "net receipts". This study will consider only that phase of the cost of government which can be arrived at through an analysis of the gross expenditures of the counties of South Dakota. The term "expenditures" as used herein will, therefore, be taken …
The Role Of Membranes And Phase Boundaries In Generating Electric Currents In Living Tissues., Norman E. Epstein
The Role Of Membranes And Phase Boundaries In Generating Electric Currents In Living Tissues., Norman E. Epstein
Electronic Theses and Dissertations
No abstract provided.
A Study Of The Sculpture Of The Chorion Of The Eggs Of Eighteen South Dakota Grasshoppers (Acridiidae), Raymond Cecil Bushland
A Study Of The Sculpture Of The Chorion Of The Eggs Of Eighteen South Dakota Grasshoppers (Acridiidae), Raymond Cecil Bushland
Electronic Theses and Dissertations
The most destructive grasshoppers that occur in South Dakota are those belonging to the genus Melanoplus. Of those, the common and harmful species are Melanoplus bivittatus (Say) and Melanoplus differentialis (Thomas). Other species that are of considerable economic importance, and, at times, fully as important as the two species mentioned, are Melanoplus femur-rubrum (Deg.) and Melanoplus mexicanus (Sauss.). Before attempting to work out a plan for grasshopper control, it is desirable at times to know what species are to be encountered. The control may vary to some extent for the different species. It has been found that Melanoplus differentialis hatches …
A Comparison Of Certain Methods Of Assay Oil Of Chenopodium, Orville Peterson
A Comparison Of Certain Methods Of Assay Oil Of Chenopodium, Orville Peterson
Electronic Theses and Dissertations
As defined in the United States Pharmacoposis, tenth revision, oil of Chenopodiumis the volatile oil distilled with steam from the fresh, over-ground parts of the flowering and fruiting plant of Chenopodium embrosiesdes war antheimintieum. (Family Chenopodiasene) oil of chenopodium yields not less than 65 per cent of accaridel.
The Effect Of Fertilizer Applications On The Quality And The Quantity Of The Oil In Flaxseed, Clarence O. Stockland
The Effect Of Fertilizer Applications On The Quality And The Quantity Of The Oil In Flaxseed, Clarence O. Stockland
Electronic Theses and Dissertations
A considerable number of economic seeds are characterized by the presence of oil instead of starch as reserved material. The flax plant produces an oil-bearing seed which yields either by pressure or by extraction an oil which is used chiefly in the manufacture of paints and varnishes, and in the manufacture of linoleum, oil cloth, printer's ink, and patent leather. The oil obtained from flexseed is known as linseed oil and is one of a class of fatty oils known as drying oil. When exposed to the air the oil absorbs oxygen, forming a compound known ad linoxyn which constitutes …
Reaction To Price Change By South Dakota Farmers, John Gordon Mcneely
Reaction To Price Change By South Dakota Farmers, John Gordon Mcneely
Electronic Theses and Dissertations
South Dakota is one of the newest of the important agricultural states. In 1900, many parts of South Dakota were still in the process of being settled. The increase in the amount of land in crops continued without interruption until the time of the World War. We then find a greater demand for farm products than ever before. Inspired by the double incentive of high prices and helping to win the war, South Dakota and United States agriculture had expanded to unprecedented levels by 1920.
An Analysis Of The Bank Credit Situation In South Dakota, Roy James Smith
An Analysis Of The Bank Credit Situation In South Dakota, Roy James Smith
Electronic Theses and Dissertations
This study was planned as a preliminary survey of the short time credit problems of South Dakota. Although considerable information had been gathered concerning long time credits, no investigation had been made in the short time credit field; consequently the study of short time credits was regarded merely as an extension of the previous field of study. An investigation in this field was expected to be valuable since the efficient operation of the farming business depends in many instances on ready access to a cheap supply of short time credit.