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Articles 5221 - 5250 of 8069
Full-Text Articles in Entire DC Network
Is Population Genetics Mired In The Past?, Andrew J. Bohonak, Neil Davies, George K. Roderick, Francis X. Villablanca
Is Population Genetics Mired In The Past?, Andrew J. Bohonak, Neil Davies, George K. Roderick, Francis X. Villablanca
Biological Sciences
No abstract provided.
Whey Protein Edible Film Structures Determined By Atomic Force Microscope, L.E. Lent, L. S. Vanasupa, P. S. Tong
Whey Protein Edible Film Structures Determined By Atomic Force Microscope, L.E. Lent, L. S. Vanasupa, P. S. Tong
Dairy Science
Atomic force microscopy was used to study edible films produced from whey proteins. The films were imaged under ambient conditions with no special sample preparation. Low resolution imaging of areas from 10 μm to 150 μm on a side was performed in the contact mode. Higher resolution scans of 350 nm to 2,700 nm required use of the noncontact imaging mode. Features about the same size as the primary protein in whey, beta-lactoglobulin (7 nm), were identified in the film samples. Molecular aggregates in the range of 1 μm, reported in other studies using transmission electron microscopy of whey protein …
Identification Of A Functional Homolog Of The Yeast Copper Homeostasis Gene Atx1 From Arabidopsis, Edward Himelblau, Helena Mria, Su-Ju Lin, Valeria Cizewski Culotta, Lola Penarrubia, Richard M. Amasino
Identification Of A Functional Homolog Of The Yeast Copper Homeostasis Gene Atx1 From Arabidopsis, Edward Himelblau, Helena Mria, Su-Ju Lin, Valeria Cizewski Culotta, Lola Penarrubia, Richard M. Amasino
Biological Sciences
A cDNA clone encoding a homolog of the yeast (Saccharomyces cerevisiae) gene Anti-oxidant 1 (ATX1) has been identified from Arabidopsis. This gene, referred to as Copper CHaperone (CCH), encodes a protein that is 36% identical to the amino acid sequence of ATX1 and has a 48-amino acid extension at the C-terminal end, which is absent from ATX1 homologs identified in animals. ATX1-deficient yeast (atx1) displayed a loss of high-affinity iron uptake. Expression of CCH in the atx1 strain restored high-affinity iron uptake, demonstrating that CCH is a functional homolog of ATX1 …
Summer Mustang, July 23, 1998
Cal Poly Student Newspaper
Student newspaper of California Polytechnic State University, San Luis Obispo, CA.
Information Storage Capacity Of Incompletely Connected Associative Memories, Holger Bosch, Franz J. Kurfess
Information Storage Capacity Of Incompletely Connected Associative Memories, Holger Bosch, Franz J. Kurfess
Computer Science and Software Engineering
In this paper, the memory capacity of incompletely connected associative memories is investigated. First, the capacity is derived for memories with fixed parameters. Optimization of the parameters yields a maximum capacity between 0.53 and 0.69 for hetero-association and half of it for auto-association improving previously reported results. The maximum capacity grows with increasing connectivity of the memory and requires sparse input and output patterns. Further, parameters can be chosen in such a way that the information content per pattern asymptotically approaches 1 with growing size of the memory.
Genetic Admixture And Gallbladder Disease In Mexican Americans, Marilyn Tseng, Robert C. Williams, Kurt R. Maurer, Moses S. Schanfield, William C. Knowler, James E. Everhart
Genetic Admixture And Gallbladder Disease In Mexican Americans, Marilyn Tseng, Robert C. Williams, Kurt R. Maurer, Moses S. Schanfield, William C. Knowler, James E. Everhart
Kinesiology and Public Health
Gallbladder disease is a common source of morbidity in the Mexican American population. Genetic heritage has been proposed as a possible contributor, but evidence for this is limited. Because gallbladder disease has been associated with Native American heritage, genetic admixture may serve as a useful proxy for genetic susceptibility to the disease in epidemiologic studies. The objective of our study was to examine thepossibility that gallbladder disease is associated with greater Native American admixture in Mexican Americans. This study used data from the Hispanic Health and Nutrition Examination Survey and was based on 1,145 Mexican Americans who underwent gallbladder ultrasonography …
Mustang Daily, June 5, 1998
Cal Poly Student Newspaper
Student newspaper of California Polytechnic State University, San Luis Obispo, CA.
June 3, 1998 Cal Poly Report, Public Affairs Office
June 3, 1998 Cal Poly Report, Public Affairs Office
Cal Poly Report
No abstract provided.
Mustang Daily, June 3, 1998
Cal Poly Student Newspaper
Student newspaper of California Polytechnic State University, San Luis Obispo, CA.
Mustang Daily, May 27, 1998
Cal Poly Student Newspaper
Student newspaper of California Polytechnic State University, San Luis Obispo, CA.
May 20, 1998 Cal Poly Report, Public Affairs Office
May 20, 1998 Cal Poly Report, Public Affairs Office
Cal Poly Report
No abstract provided.
Mustang Daily, May 18, 1998
Cal Poly Student Newspaper
Student newspaper of California Polytechnic State University, San Luis Obispo, CA.
Mustang Daily, May 14, 1998
Cal Poly Student Newspaper
Student newspaper of California Polytechnic State University, San Luis Obispo, CA.
Mustang Daily, May 11, 1998
Cal Poly Student Newspaper
Student newspaper of California Polytechnic State University, San Luis Obispo, CA.
Reaction Sequence Of Iron Sulfide Minerals In Bacteria And Their Use As Biomarkers, Mihály Pósfai, Peter R. Buseck, D. A. Bazylinski, Richard B. Frankel
Reaction Sequence Of Iron Sulfide Minerals In Bacteria And Their Use As Biomarkers, Mihály Pósfai, Peter R. Buseck, D. A. Bazylinski, Richard B. Frankel
Physics
Some bacteria form intracellular nanometer-scale crystals of greigite (Fe3S4) that cause the bacteria to be oriented in magnetic fields. Transmission electron microscope observations showed that ferrimagnetic greigite in these bacteria forms from nonmagnetic mackinawite (tetragonal FeS) and possibly from cubic FeS. These precursors apparently transform into greigite by rearrangement of iron atoms over a period of days to weeks. Neither pyrrhotite nor pyrite was found. These results have implications for the interpretation of the presence of pyrrhotite and greigite in the martian meteorite ALH84001.
Mustang Daily, May 7, 1998
Cal Poly Student Newspaper
Student newspaper of California Polytechnic State University, San Luis Obispo, CA.
May 6, 1998 Cal Poly Report, Public Affairs Office
May 6, 1998 Cal Poly Report, Public Affairs Office
Cal Poly Report
No abstract provided.
Invasion Genetics Of The Mediterranean Fruit Fly: Variation In Multiple Nuclear Introns, F. X. Villablanca, G. K. Roderick, S. R. Palumbi
Invasion Genetics Of The Mediterranean Fruit Fly: Variation In Multiple Nuclear Introns, F. X. Villablanca, G. K. Roderick, S. R. Palumbi
Biological Sciences
Biological invasions generally start from low initial population sizes, leading to reduced genetic variation in nuclear and especially mitochondrial DNA. Consequently, genetic approaches for the study of invasion history and population structure are difficult. An extreme example is the Mediterranean fruit fly, Ceratitis capitata (Medfly), for which successive invasions during this century have resulted in a loss of 60% of ancestral genetic variation in isozymes and 75% of variation in mitochondrial DNA. Using Medflies as an example, we present a new approach to invasion genetics that measures DNA sequence variation within introns from multiple nuclear loci. These loci are so …
Mustang Daily, April 29, 1998
Cal Poly Student Newspaper
Student newspaper of California Polytechnic State University, San Luis Obispo, CA.
Mustang Daily, April 28, 1998
Cal Poly Student Newspaper
Student newspaper of California Polytechnic State University, San Luis Obispo, CA.
Mustang Daily, April 24, 1998
Cal Poly Student Newspaper
Student newspaper of California Polytechnic State University, San Luis Obispo, CA.
April 22, 1998 Cal Poly Report, Public Affairs Office
April 22, 1998 Cal Poly Report, Public Affairs Office
Cal Poly Report
No abstract provided.
Mustang Daily, April 22, 1998
Cal Poly Student Newspaper
Student newspaper of California Polytechnic State University, San Luis Obispo, CA.
Mustang Daily, April 21, 1998
Cal Poly Student Newspaper
Student newspaper of California Polytechnic State University, San Luis Obispo, CA.
Mustang Daily, April 20, 1998
Cal Poly Student Newspaper
Student newspaper of California Polytechnic State University, San Luis Obispo, CA.
Mustang Daily, April 17, 1998
Cal Poly Student Newspaper
Student newspaper of California Polytechnic State University, San Luis Obispo, CA.
April 15, 1998 Cal Poly Report, Public Affairs Office
April 15, 1998 Cal Poly Report, Public Affairs Office
Cal Poly Report
No abstract provided.
Academic Senate - Agenda, 4/14/1998, Academic Senate
Academic Senate - Agenda, 4/14/1998, Academic Senate
Academic Senate Agendas
No abstract provided.
Mustang Daily, April 8, 1998
Cal Poly Student Newspaper
Student newspaper of California Polytechnic State University, San Luis Obispo, CA.