Open Access. Powered by Scholars. Published by Universities.®
- Discipline
-
- Life Sciences (1139)
- Medicine and Health Sciences (692)
- Social and Behavioral Sciences (627)
- Education (400)
- Psychology (304)
-
- Public Health (256)
- Physical Sciences and Mathematics (212)
- Animal Sciences (159)
- Arts and Humanities (149)
- Kinesiology (145)
- Biology (143)
- Engineering (131)
- Exercise Science (124)
- Nutrition (122)
- Plant Sciences (119)
- Nursing (115)
- Epidemiology (108)
- Food Science (92)
- Sociology (84)
- Agriculture (80)
- Clinical Psychology (80)
- Biochemistry, Biophysics, and Structural Biology (78)
- Public Health Education and Promotion (70)
- Chemistry (68)
- Educational Leadership (65)
- Microbiology (54)
- Medical Sciences (51)
- Environmental Sciences (49)
- Dentistry (48)
- Physiology (45)
- Institution
-
- Mississippi State University (1045)
- University of North Dakota (989)
- Brigham Young University (706)
- Virginia Commonwealth University (607)
- University of South Carolina (519)
-
- American University in Cairo (200)
- Illinois State University (188)
- Rowan University (156)
- University of Texas Rio Grande Valley (137)
- Pepperdine University (98)
- City University of New York (CUNY) (83)
- University of Arkansas Little Rock (69)
- St. John's University (63)
- Florida Institute of Technology (61)
- University for Business and Technology in Kosovo (59)
- Columbus State University (47)
- Nova Southeastern University (46)
- Air Force Institute of Technology (40)
- SASTRA Deemed to be University (22)
- Texas A&M International University (11)
- UAlaska System (2)
- Keyword
-
- Obesity (99)
- Nutrition (75)
- Physical activity (69)
- North Dakota (50)
- Children (47)
-
- Diet (40)
- Education (38)
- Exercise (38)
- Depression (36)
- Diabetes (36)
- Stress (33)
- Health (31)
- Cancer (30)
- Inflammation (30)
- Adolescents (29)
- Mental health (27)
- United States (27)
- Dissertations (PsyD) -- Psychology (25)
- Pregnancy (25)
- Agriculture (24)
- Gender (24)
- Women (24)
- Biochemistry (23)
- Food insecurity (23)
- Nitrogen (23)
- Soybean (23)
- Breastfeeding (22)
- Eating disorders (22)
- Egypt (22)
- Utah (22)
- Publication Year
Articles 5071 - 5100 of 5148
Full-Text Articles in Entire DC Network
A Thermodynamic Study Of Step-Wise Complex Formation In Several Aqueous Copper (Ii)-Amino Acid Systems, Vipin M. Kothari
A Thermodynamic Study Of Step-Wise Complex Formation In Several Aqueous Copper (Ii)-Amino Acid Systems, Vipin M. Kothari
Theses and Dissertations
pK_n values for step-wise dissociation of protons from the protonated ligands (glycine, α-amino isobutyric acid, sarcosine and theonine) were determined potentiometrically with a Beckman Model GS pH meter in aqueous solution at 10, 20, 30 and 40° C. Log K values for step-wise interaction of glycine, α-amino isobutyric acid, sarcosine and threonine with copper(II) ion were also determined potentiometrically with a pH meter at 10, 20, 30 and 40° C. The standard free energy of formation for the step-wise interaction of copper(II) with each of the above ligands was calculated from the values of log K. Enthalpy and entropy changes …
A Thermodynamic Study Of Complex Formation In Aqueous Solution.|Ni.|Pthe Hg(Ii)-, Zn(Ii)-, Cd(Ii)-, Ag(I)-Serine Systems.|Nii.|Pthe Hg(Ii)-, Zn(Ii)-, Cd(Ii)-, In(Iii)- Thioglycollic Acid System :|Ba Study Of The Effect Of D[Pi]-D[Pi] Bonding On These Complexes, Marriner Lee Morrell
Theses and Dissertations
Thermodynamic equilibrium constants were obtained potentiometrically using a Beckman pH meter for metal-serine and metal-thioglycolloc acid complexes to study the thermodynamic properties of the complexes and the effect of dπ - dπ bonding on the equilibrium constants. The following calculations were made: 1. The stepwise dissociation of protons from serine at 10, 20, 30, and 40°C and the stepwise dissociation of protons from thioglycollic acid at 20, 30, and 40°C. 2. The thermodynamic formation constants for Zn(II), Cd(II), Hg(II), and Ag(I) with serine at 10, 20, 30, and 40°C and at two ionic strengths. 3. The thermodynamic formation constants for …
A Study Of Factors Regulating Blood Flow During Reactive Hyperemia, Robert J. Bache
A Study Of Factors Regulating Blood Flow During Reactive Hyperemia, Robert J. Bache
Theses and Dissertations
No abstract provided.
A Study Of The Effects Of Different Substrates On Growth And Reproduction In Certain Coprophilic Agaricaceae, Raymond C. Brown
A Study Of The Effects Of Different Substrates On Growth And Reproduction In Certain Coprophilic Agaricaceae, Raymond C. Brown
Theses and Dissertations
Psilocybe mutans sp. nov. had ceased fruiting consistently in artificial culture several years prior to the initiation of this study. In the couse of this study fruiting bodies were produced on a number of different substrates. All cultures were inoculated by mycelial transfer or by spraying with a suspension of pre-germinated spores. All cultrues were incubated for one to two weeks in a constant-temperature room at 70°F. on a shelf fourteen inches below a fluorescent lighting fixture. Lighting was continuous with an intensity at shelf level of approximately 3,000 foot-candles. Fruiting on any particular substrate was improved if the substrate …
The Vitamin B1-Sparing Action Of Sorbitol, Gisela Eleanor Bethsold
The Vitamin B1-Sparing Action Of Sorbitol, Gisela Eleanor Bethsold
Theses and Dissertations
The present study was initiated to determine the effect sorbitol has upon the enzymatic functions of thiamin; specifically, what effect sorbitol bas upon the alpha-ketoglutarate and pyruvate dehydrogenases activities of rat liver mitochondria. In addition, the effect of varying the dietary sorbitol concentration on the development of an athiaminosis was studied, particularly the effect on growth rate.
A Study Of High School Wrestling In North Dakota, Robert W. Peterson
A Study Of High School Wrestling In North Dakota, Robert W. Peterson
Theses and Dissertations
No abstract provided.
Effects Of The B₆-Vitamins And Their Phosphates On Intestinal Absorption Of L-Methionine, J Michael Poston
Effects Of The B₆-Vitamins And Their Phosphates On Intestinal Absorption Of L-Methionine, J Michael Poston
Theses and Dissertations
No abstract provided.
Effects Of The B₆-Vitamins And 2, 4-Dinitrophenol On Intestinal Absorption Of L-Tyrosine, Raymond C. Flaa
Effects Of The B₆-Vitamins And 2, 4-Dinitrophenol On Intestinal Absorption Of L-Tyrosine, Raymond C. Flaa
Theses and Dissertations
No abstract provided.
Studies On The Kinetics And Reaction Mechanism Of The Ribitol Dehydrogenase Enzyme System, Robert C. Nordlie
Studies On The Kinetics And Reaction Mechanism Of The Ribitol Dehydrogenase Enzyme System, Robert C. Nordlie
Theses and Dissertations
No abstract provided.
Studies On The Biological Oxidation Of Ferrous Iron And Chalcopyrite, Loral Alvin Decker
Studies On The Biological Oxidation Of Ferrous Iron And Chalcopyrite, Loral Alvin Decker
Theses and Dissertations
The purpose of this investigation was to determine the effectiveness of the leaching streams from waste copper ore dumps as a nutrient solution for subsequent biological oxidation and solubilization of sulfide minerals. The copper in the leaching streams is precipitated by displacement with iron. As a result of this procedure the solution is high in ferrous iron concentration and has a pH of near 3.7. The bacteria in the leaching streams are capable of oxidizing ferrous iron to the ferric state and sulfide minerals to sulfates. The effects of temperatures, pH, urea, and aeration rate on the oxidation of the …
The Cytochrome Composition Of Bacillus Subtilis And Bacillus Megaterium, John Harvey Mangum
The Cytochrome Composition Of Bacillus Subtilis And Bacillus Megaterium, John Harvey Mangum
Theses and Dissertations
A spectroscopic and enzymatic investigation of the cytochromes of B. megaterium and B. subtilis was conducted. Attempts were made to isolate and characterize the individual cytochromes as well as to determine the locale of such activities as cytochrome c oxidase, DPNH oxidase, succinic dehydrogenase, cytochrome c reductase and diaphorse. Only two methods proved effective in liberating the cytochromes; disruption of the cells with sonic osillations and grinding tlhe cells with alumina. These procedures caused a fragmentation of the cell membrane. It was found that the entire cytochrome complement of these two bacteria was bound intimately to particles which most likely …
An Analysis Of The Opinion Of The Values Of High School Biology As Held By Selected Groups, John L. Rhoades
An Analysis Of The Opinion Of The Values Of High School Biology As Held By Selected Groups, John L. Rhoades
Theses and Dissertations
No abstract provided.
The Comparative Mineral Requirements Of Pioneer And Climax Range Grasses, Paul L. Steele
The Comparative Mineral Requirements Of Pioneer And Climax Range Grasses, Paul L. Steele
Theses and Dissertations
A study was made to determine the effects of variable levels of nitrogen, phosphorus, and potassium upon several species of pioneer and climax range grasses, and to determine if these grasses differ in their ability to grow when supplied with low levels of these nutrients. Five grasses were used. The climax grasses were Agropyron spicatum and Agropryon smithii, and the pioneer grasses were Aristida longiseta, Sporobous cryptandrus, and Oryzopsis hymenoides.
A Study Of Three Photochemical Activities Of Chloroplasts, Jimmy W. Hinkson
A Study Of Three Photochemical Activities Of Chloroplasts, Jimmy W. Hinkson
Theses and Dissertations
Chloroplasts of sugar beet leaves were subjected to treatment by heating, by incubation at pH 8.5 and pH 5.5, by incubation in ion low water, by sonic oscillation, by digestion with enzymes (lysozyme, pancreatin, and lipase), by extraction with digitonin, and by chemical compounds including 8-hydroxy-quinoline, sodium azide, zinc sulfate, phenyl mercuric acetate, potassium cyanide, 1-allylthiourea, 2,4-dinitrophenol, thymol, and p-chloromercuribenzoate. A comparative study was made of the effects of these treatments upon three photochemical reactions (the photoreduction of 2,6- dichlorophenol indophenol, the photoreduction of indigo carmine in the presence of a couple composed of 2,6-dichlorophenol indophenol and ascorbic acid, and …
The Photoreduction Of Indigo Carmine Flavin Mononucleotide And Diphosphopyridine Nucleotide, By Illuminated Chloroplasts, M. Odell Hobbs
The Photoreduction Of Indigo Carmine Flavin Mononucleotide And Diphosphopyridine Nucleotide, By Illuminated Chloroplasts, M. Odell Hobbs
Theses and Dissertations
An investigation was made of the photoreduction of indigo carmine dye and flavin mononucleotide (FMN) by an illuminated sugar beet leaf homogenate in the presence of 2,6-dichlorophenolindophenol dye (DPIP) and ascorbic acid. DPIP and ascorbate were absolutely required for the reaction. Reconstitution experiments indicated a requirement for a heat-labile factor present in the supernatant fluid following centrifugation of the leaf homogenate. This factor activated the photoreduction of indigo carmine more than 20 times. The photoreduction of FMN was activated 2 times by this factor. Studies on the stoichiometry of indigo carmine photoreduction revealed that one mole of ascorbate was photooxidized …
The Cattle Industry Of San Juan County, Utah, 1875-1900, Franklin D. Day
The Cattle Industry Of San Juan County, Utah, 1875-1900, Franklin D. Day
Theses and Dissertations
The purpose of this study was to learn the reasons for the movement of cattle Into San Juan County, Utah, the development of the Industry, and its contribution to the growth of the county.
The few written accounts in existence of the cattle industry in San Juan are brief and found in widely separate areas. The whole and complete account will likely never be written, but there is need for gathering as much of the scattered information as possible.
A study of the early history of the inhabitants of San Juan was made, along with an examination of the geography …
Sulfur Metabolism In Toxic And Nutritional Hepatic Injury : Pt. I. Chemically Induced Necrotic Liver Degeneration ; Pt. Ii. Fatty Liver Degeneration, Fred L. Snyder
Theses and Dissertations
No abstract provided.
A Comparison Of The Health Knowledge And Health Interests Of University Of North Dakota Freshmen, Patricia Ann Warcup
A Comparison Of The Health Knowledge And Health Interests Of University Of North Dakota Freshmen, Patricia Ann Warcup
Theses and Dissertations
No abstract provided.
Requirements For The Bachelor's Degree For Men Students Majoring In Physical Education In The Northwest And Northcentral Sections Of The United States, Alvin E. Siegle
Requirements For The Bachelor's Degree For Men Students Majoring In Physical Education In The Northwest And Northcentral Sections Of The United States, Alvin E. Siegle
Theses and Dissertations
No abstract provided.
Blood Sugar Responses Of Dogs At Various Ages To Cold, Epinephrine, And Norepinephrine, Alvin L. Larson
Blood Sugar Responses Of Dogs At Various Ages To Cold, Epinephrine, And Norepinephrine, Alvin L. Larson
Theses and Dissertations
No abstract provided.
Effects Of Pyridoxine On Absorption From The Small Intestine Of The Rat, Lyle J. Coen
Effects Of Pyridoxine On Absorption From The Small Intestine Of The Rat, Lyle J. Coen
Theses and Dissertations
No abstract provided.
Physical Education In The Crookston Public School System, Linton R. Lehrer
Physical Education In The Crookston Public School System, Linton R. Lehrer
Theses and Dissertations
No abstract provided.
Chemosynthetic Microorganisms In Leaching Sulfide Minerals, A. Keith Jameson
Chemosynthetic Microorganisms In Leaching Sulfide Minerals, A. Keith Jameson
Theses and Dissertations
This investigation showed that a single bacterium was capable of sulfide oxidation in exposed ore bodies. This single bacterium was isolated and characterized. It exhibited different characteristics than any previously known organism. It was found to be a chemosynthetic autotroph. An optimum nutrient concentration was determined for pyrite oxidation. The nutrient concentration was determined for pyrite oxidation. The nutrient contains only a source of phosphate and nitrogen. Urea was found to be a better source of nitrogen than ammonium sulfate which had previously been used. The effect of various organic compounds on the oxidation of pyrite was observed. Glucose and …
Metabolic Changes In Newborn Dogs During Development Of Temperature Regulation, Donald G. Mcintyre
Metabolic Changes In Newborn Dogs During Development Of Temperature Regulation, Donald G. Mcintyre
Theses and Dissertations
No abstract provided.
Phosphorus Metabolism Of C3h Ascites Tumor Cells, George Miroff
Phosphorus Metabolism Of C3h Ascites Tumor Cells, George Miroff
Theses and Dissertations
No abstract provided.
Initial Histological Changes Of Lymph Nodes Of Lathyric Rats : With Observations On Changes Induced By Hydrocortisone And Somatotropin, Raymond J. Parisi
Initial Histological Changes Of Lymph Nodes Of Lathyric Rats : With Observations On Changes Induced By Hydrocortisone And Somatotropin, Raymond J. Parisi
Theses and Dissertations
No abstract provided.
A Tentative Course Of Study In Health Education : Primary Level - Grades One, Two And Three, Myrtie Hunt
A Tentative Course Of Study In Health Education : Primary Level - Grades One, Two And Three, Myrtie Hunt
Theses and Dissertations
No abstract provided.
Redistribution And Incorporation Of Sulfur-Containing Amino Acids During The Healing Of Experimental Wounds, Robert C. Nordlie
Redistribution And Incorporation Of Sulfur-Containing Amino Acids During The Healing Of Experimental Wounds, Robert C. Nordlie
Theses and Dissertations
No abstract provided.
Photo-Oxidations Sensitized By Physiologically Important Substances, Ernel D. Ihnen
Photo-Oxidations Sensitized By Physiologically Important Substances, Ernel D. Ihnen
Theses and Dissertations
A study of the photo-oxidation of the 2,6-dichlorophenol indophenol-ascorbic couple was undertaken with a view to investigating the postulated mechanism of oxidation by a component of the oxygen evolving sequence operative in photosynthesis. A spectrophotometric method for the measurement of the progress of photo-oxidation was developed. Temperature and pH dependence were determined and the effect of various common inhibitors and physiological substances tested. None of the common Hill reaction inhibitors were effective in the ascorbic acid photo-oxidation in the system used. KCN and catalase as well as a few other high molecular weight proteins were able to inhibit dark auto-oxidation …
The Biogeography Of The Ants Of North Dakota, Jeanette Wheeler
The Biogeography Of The Ants Of North Dakota, Jeanette Wheeler
Theses and Dissertations
No abstract provided.