Digital Commons Network^™

Early And Fence Line Weaning Of Calves: Producers’ Experience, Harlow W. Hill

Range Beef Cow Symposium

The reason I have been invited to speak today is because of our success with our early weaning program at Maddux Cattle Company for the last several years. I grew up in the western Sand Hills around Alliance, Nebraska. In the Sand Hills, the tradition was to wean in November. Once or twice I can remember us weaning early so we weaned in October. I left there 25 years ago and came to Maddux Cattle Company in southwestern Nebraska owned by Jack Maddux. I came on the job the 15th of September and the calves were already weaned. I shook …

Analysis Of Weight-Related Advertisements And Nutrition Articles In Popular Women's Magazines, Jennifer Cardall Jacobson

Theses and Dissertations

Objective: The purpose of this study was to discover whether the weight-related messages and themes from food advertisements in women's magazines reinforce or contradict the messages communicated in nutrition-related articles focusing on weight control within the same magazines.

Design: Content analysis of 48 issues of weight-related content six popular women's magazines, 2001-2002. There were three magazines in each of two categories, "homemaking" and "health." All food and nutrition advertisements were analyzed (n=954), along with all nutrition articles (n=336). Advertisements and articles were identified as being either weight-related or non-weight-related. Type of food/product advertised, claims used to market the product, and …

Epilepsy-Associated Dysfunction In The Voltage-Gated Neuronal Sodium Channel Scn1a, Christoph Lossin, T. Rhodes, R. Desai, C. Vanoye, S. Caniciu, O. Devinsky, A. George

Christoph Lossin, Ph.D.

Mutations in SCN1A, the gene encoding the brain voltage-gated sodium channel subunit (Nav1.1) are associated with at least two forms of epilepsy, generalized epilepsy with febrile seizures plus (GEFS+) and severe myoclonic epilepsy of infancy (SMEI). We examined the functional properties of four GEFS+ alleles and one SMEI allele using whole-cell patch-clamp analysis of heterologously expressed recombinant human SCN1A. One previously reported GEFS+ mutation (I1656M) and an additional novel allele (R1657C), both affecting residues in a voltage-sensing S4 segment, exhibited a similar depolarizing shift in the voltage dependence of activation. Additionally, R1657C showed a 50% reduction in current density and …

Loss-Based Estimation With Cross-Validation: Applications To Microarray Data Analysis And Motif Finding, Sandrine Dudoit, Mark J. Van Der Laan, Sunduz Keles, Annette M. Molinaro, Sandra E. Sinisi, Siew Leng Teng

U.C. Berkeley Division of Biostatistics Working Paper Series

Current statistical inference problems in genomic data analysis involve parameter estimation for high-dimensional multivariate distributions, with typically unknown and intricate correlation patterns among variables. Addressing these inference questions satisfactorily requires: (i) an intensive and thorough search of the parameter space to generate good candidate estimators, (ii) an approach for selecting an optimal estimator among these candidates, and (iii) a method for reliably assessing the performance of the resulting estimator. We propose a unified loss-based methodology for estimator construction, selection, and performance assessment with cross-validation. In this approach, the parameter of interest is defined as the risk minimizer for a suitable …

Comprehensive Laboratory Measurements Of Biomass-Burning Emissions: 1. Emissions From Indonesian, African, And Other Fuels, Ted J. Christian, B. Kleiss, Robert J. Yokelson, R. Holzinger, P. J. Crutzen, Wei Min Hao, B. H. Saharjo, Darold E. Ward

Chemistry and Biochemistry Faculty Publications

[1] Trace gas and particle emissions were measured from 47 laboratory fires burning 16 regionally to globally significant fuel types. Instrumentation included the following: open-path Fourier transform infrared spectroscopy; proton transfer reaction mass spectrometry; filter sampling with subsequent analysis of particles with diameter <2.5 μm for organic and elemental carbon and other elements; and canister sampling with subsequent analysis by gas chromatography (GC)/flame ionization detector, GC/electron capture detector, and GC/mass spectrometry. The emissions of 26 compounds are reported by fuel type. The results include the first detailed measurements of the emissions from Indonesian fuels. Carbon dioxide, CO, CH₄, NH₃, HCN, methanol, and acetic acid were the seven most abundant emissions (in order) from burning Indonesian peat. Acetol (hydroxyacetone) was a major, previously unobserved emission from burning rice straw (21–34 g/kg). The emission factors for our simulated African fires are consistent with field data for African fires for compounds measured in both …

Smokejumper Obituary: Hegland, Alman W. (Missoula 1948), National Smokejumper Association

Smokejumper Obituaries

No abstract provided.

Composition And Function Of A Novel Consortial Endosymbiosis In The Shipworm Lyrodus Pedicellatus, Daniel L. Distel

University of Maine Office of Research Administration: Grant Reports

Enormous quantities of wood and other woody plant materials
(including leaves, bark, shoots, stems and nuts) are produced annually in
the environment. In fact, cellulose, the major component of woody
materials, is thought to be the most abundant biological material on earth.
This remarkably strong and enduring molecule is a polymer of glucose
(sugar) linked by a type of chemical bond that makes it indigestible to
most living organisms. Therefore, this rich source of food energy is
available to only a few animals (e.g., termites and ruminants) that can
digest cellulose with the aid of microbes living in their guts. …

Small Grains: 2004 Variety Recommendations (2003 Crop Performance Results), Cooperative Extension Service, South Dakota State University

SDSU Extension Circulars

Variety selection is a fundamental element in a sound crop production program. This report contains variety recommendations, descriptions, and yield data for the spring-seeded small grains – hard red spring wheat, oat, and barley, along with the fall-seeded small grain –hard red winter wheat. Key factors in variety selection include yield, yield stability, maturity, straw strength, height, test weight, quality, and disease resistance. Yield is an important factor; however, a variety with good disease resistance, straw strength, and high grain quality may be more profitable in some cases than the highest yielding variety. Disease resistance information is based on reactions …

Tolerance Of The Fetus By The Maternal Immune System: Role Of Inflammatory Mediators At The Feto-Maternal Interface, Colette Kanellopoulos-Langevin, Stephane M. Caucheteux, Philippe Verbeke, David M. Ojcius

All Dugoni School of Dentistry Faculty Articles

The adaptive immune system of placental mammals has evolved to tolerate the fetus. Rejection of the fetus by adaptive immune responses is therefore a rare event, with abortion being caused more frequently by inflammation in the placenta. This review will cover recent aspects of immune privilege and the innate immune system at the feto-maternal interface, citing examples of the role played by microbial infections in fetal demise.

Explore Variable Potential Ion Guide For Mass Spectrometry, Curtiss D. Hanson

Patents (University of Northern Iowa)

A variable potential ion guide for placement within the reflectron of a time-of-flight mass spectrometer includes an elongate resistive electrode placed axially within the reflectron. The electrode may be a non-conductive monofilament coated with a resistive polymer coating, with one end of the electrode coupled to a high potential source, the electrode carrying a potential gradient along its length.

Optimization Of Bacterial Luciferase For Expression In Mammalian Cells, Stacey Swiger Patterson

Doctoral Dissertations

This study describes the optimization of expression of the bacterial luciferase enzyme in mammalian cells. Previous attempts to express this heterodimeric enzyme complex in mammalian cells have been met with only modest success. In this research effort, several vector formats were evaluated to fully determine the optimal format for the expression of these genes. It was determined that the bacterial luciferase enzyme produced optimal bioluminescence in mammalian cells when the genes were cloned and expressed as a bicistronic transcript fused with an internal ribosomal entry site (IRES). To optimize the enzyme expression further, a novel approach to codon optimize the …

The Development And Utilization Of A Survey Instrument To Determine The Acceptance Of National Standards For Technological Literacy, Robert Malcolm Donan

Doctoral Dissertations

Over the past six years, practitioners in the field of technology education within the State of Tennessee have been mandated with nearly constant curricular change with the latest being the implementation of a revised set of content standards for technology education, a major change in programs within the curriculum framework, and most recently a new name for the state-wide program. These programmatic changes, other than the name change, although they addressed the majority of the national content standards for technological literacy, were not correlated with either the programs or grade level content explicit in the national standards developed and published …

Transgenic Approaches To Study Nodulation In The Model Legume, Lotus Japonicus, Crystal Bickley Mcalvin

Doctoral Dissertations

The soybean apyrase, GS52, characterized as an early nodulin, was further investigated for its possible role in nodulation. GS52 is expressed in roots and localized to the plasma membrane. In addition, it is rapidly induced upon rhizobial inoculation. Treatment of soybean roots with anti-GS52 antibodies blocked nodulation by Bradyrhizobium japonicum. Transgenic Lotus japonicus plants were generated expressing gs52 and showed enhanced nodulation and infection thread formation upon inoculation with Mesorhizobium loti that correlated with expression of the transgene. Surprisingly, expression of GS52 allowed L. japonicus plants to be infected but not nodulated by B. japonicum, the natural symbiont of soybean. …

Minerva 2003, The Honors College

Minerva

This inaugural issue of Minerva includes an article on the inauguration of the University of Maine Honors College; a discussion of Honors Living-Learning communities, Colvin and Balentine Halls; and an article on the introduction of the Honors Read tutorial course. Other highlights include an article on Honors travel to Washington D.C. and Chicago.

News From Cart, Donald Padgett

Bridgewater Review

No abstract provided.

Number 46 (December 2003), Southern Fishes Council

Southeastern Fishes Council Proceedings

(December 2003) - Fish survey and bioassessment of Station Camp Creek in the Upper Kentucky River Drainage. By Jeffery M. Ray and Patrick A. Ceas

Minutes, Business Meeting, 29th Annual Meeting, Southeastern Fishes Council

Front Matter, Southeastern Fishes Council

Southeastern Fishes Council Proceedings

No abstract provided.

Minutes, Business Meeting, Southeastern Fishes Council

Southeastern Fishes Council Proceedings

No abstract provided.

Fish Survey And Bioassessment Of Station Camp Creek And Sturgeon Creek In The Upper Kentucky River Drainage, Jeffery M. Ray, Patrick A. Ceas

Southeastern Fishes Council Proceedings

No abstract provided.

Cd43 Modulates Severity And Onset Of Experimental Autoimmune Encephalomyelitis., Thandi M. Onami, M. L. Ford, A. Sperling, R. Ahmed, B. D. Evavold

Microbiology Publications and Other Works

Experimental autoimmune encephalomyelitis (EAE) is a mouse model of multiple sclerosis characterized by infiltration of activated CD4(+) T lymphocytes into tissues of the CNS. This study investigated the role of CD43 in the induction and progression of EAE. Results demonstrate that CD43-deficient mice have reduced and delayed clinical and histological disease severity relative to CD43(+/+) mice. This reduction was characterized by decreased CD4(+) T cell infiltration of the CNS of CD43(-/-) mice but similar numbers of Ag-specific T cells in the periphery, suggesting a defect in T cell trafficking to the CNS. The absence of CD43 also affected cytokine production, …

Pb1770-A Guide For Considering And Developing A Farmers Market In Tennessee, The University Of Tennessee Agricultural Extension Service

Marketing, Finances and Value-Added Agriculture

Soybean farmers face a variety of marketing alternatives each year. Selling to a grain buyer at harvest is one way to sell soybeans. Another alternative is to store soybeans (either commercially or on-farm) and sell them later. Farmers may also set a price for their soybeans before harvest by signing a cash-forward contract with a grain buyer. The contract specifi es the quantity, price, grade, quality and date of delivery. Because prices have been historically lowest during harvest, storing and cash-forward contracting are ways to price soybeans before or after the harvest season, in hopes of achieving higher prices.

Heat-Shock Protein 70 (Hsp70) As A Biochemical Stress Indicator: An Experimental Field Test In Two Congeneric Intertidal Gastropods (Genus: Tegula), Lars Tomanek, Eric Sanford

Biological Sciences

Although previous studies have demonstrated that heat-shock protein 70 (Hsp70) can be induced by environmental stress, little is known about natural variation in this response over short time scales. We examined how Hsp70 levels varied over days to weeks in two intertidal snail species of the genus Tegula. Sampling was conducted both under naturally changing environmental conditions and in different vertical zones on a rocky shore. The subtidal to low-intertidal T. brunnea was transplanted into shaded and unshaded mid-intertidal cages to assess temporal variation in Hsps under conditions of increased stress. For comparison, the low to mid-intertidal ,T. …

The Translocation Of Golden Perch, Murray Cod And Australian Bass, Into And Within Western Australia, For The Purposes Of Recreational Stocking, Domestic Stocking And Commercial And Non-Commercial Aquaculture. A Discussion Paper., Department Of Fisheries

Fisheries management papers

This discussion paper has been prepared to provide information to assist in assessment of the possible impact of the translocation of golden perch (Macquaria ambigua), Murray cod (Maccullochella peelii peelii) and Australian bass (Macquaria novemaculeata) into and within Western Australia, for the purposes of recreational stocking, domestic stocking, commercial and non-commercial aquaculture. In assessing the translocation of any aquatic species, economic and social benefits must be balanced with biological and environmental risks.

Ethical Issues In The Use Of Animals In Biomedical And Psychopharmocological Research, John P. Gluck, Jordan Bell

Experimentation Collection

Rationale: The ethical debate concerning the use of animals in biomedical and pharmacological research continues to be replete with misunderstandings about whether animals have moral standing. Objectives: This article briefly reviews the central ethical positions and their relationship to the basic parameters of research regulation from an international perspective. The issues associated with the validation of animal models will then be discussed. Finally, suggestions for empirical ethics research will be presented. Methods: Recent literature reviews were accessed and analyzed. Results: This review summarizes the pertinent ethical and research literature. Conclusions: In summary, regardless of the ethical perspective one favors, there …

The Drosophila Selenoprotein Bthd Is Required For Survival And Has A Role In Salivary Gland Development, So Yeon Kwon, Paul Badenhorst, F. Javier Martin-Romero, Bradley A. Carlson, Bruce M. Paterson, Vadim Gladyshev, Byeong Jae Lee, Dolph L. Hatfield

Vadim Gladyshev Publications

Selenium is implicated in many diseases, including cancer, but its function at the molecular level is poorly understood. BthD is one of three selenoproteins recently identified in Drosophila. To elucidate the function of BthD and the role of selenoproteins in cellular metabolism and health, we analyzed the developmental expression profile of this protein and used inducible RNA interference (RNAi) to ablate function. We find that BthD is dynamically expressed during Drosophila development. bthD mRNA and protein are abundant in the ovaries of female flies and are deposited into the developing oocyte. Maternally contributed protein and RNA persist during early …

Southeast South Dakota Experiment Farm Annual Progress Report, 2003, Agricultural Experiment Station

Agricultural Experiment Station and Research Farm Annual Reports

This document highlights 27 crop and livestock research and demonstration reports from projects conducted at Southeast Research Farm in 2003. It is published by the South Dakota Agricultural Experiment Station and Cooperative Extension Service at South Dakota State University in cooperation with the Southeast South Dakota Experiment Farm Corporation. Reports in this document include information on: temperatures and precipitation data, corn production and performance, soybean research and planting, soil testing, alfalfa yield test, fertilizer testing, herbicide research, crop rotation, sorghum, small grains, livestock research, and pest and weed control.

Effects Of Fasting And Transportation On Pork Quality Development And Extent Of Postmortem Metabolism, J.M. Leheska, D.M. Wulf, R.J. Maddock

Animal Science Faculty Publications

One hundred seventy-seven pigs were used to determine the interaction effects of fasting and length of transport prior to harvest on pork muscle quality. The study design was a 2 × 2 × 3 factorial, which involved two genetic sources, fasting (F) or no fasting (N) of pigs 48-h prior to harvest, and three transport times (0.5, 2.5, or 8.0 h) on a semitrailer to the packing plant. Genetic source was a significant source of variation (P < 0.05) for most composition and muscle quality variables. Fasting reduced hot carcass weight 3.6% (P < 0.05), but length of transport did not affect hot carcass weight (P > 0.05). There were no differences (P > 0.05) in percent lean among fasting and transport treatments. Fasted pigs had higher longissimus dorsi (LD) ultimate …

Fisheries In Sundarbans: Problems And Prospects, Ganesh Chandra, R L. Sagar

Ganesh Chandra

Sundarbans, the largest delta on the planet earth is famous for its marine and estuarine fish resources. A large population is dependent on fishery activity and capture fisheries is treated as the backbone of Sundarban economy. Sundarban boast around 172 species of fishes, 20 species of prawn and 44 species of crabs including two edible crabs. But fisheries in Sundarbans faces some difficult problems which have an impact on the biodiversity, sustainability and livelihood of fish resources and fisher folk viz. shrinking tiger prawn population, indiscriminate fish seed collection, lack of post harvest and other infrastructures, natural calamities such as …

Cd43 Modulates Severity And Onset Of Experimental Autoimmune Encephalomyelitis., Thandi M. Onami, M. L. Ford, A. Sperling, R. Ahmed, B. D. Evavold

Thandi M. Onami

Experimental autoimmune encephalomyelitis (EAE) is a mouse model of multiple sclerosis characterized by infiltration of activated CD4(+) T lymphocytes into tissues of the CNS. This study investigated the role of CD43 in the induction and progression of EAE. Results demonstrate that CD43-deficient mice have reduced and delayed clinical and histological disease severity relative to CD43(+/+) mice. This reduction was characterized by decreased CD4(+) T cell infiltration of the CNS of CD43(-/-) mice but similar numbers of Ag-specific T cells in the periphery, suggesting a defect in T cell trafficking to the CNS. The absence of CD43 also affected cytokine production, …

Center For Grassland Studies Newsletter, Winter 2003, Volume 9, No. 1

Center for Grassland Studies: Newsletters

Planning for Bison Grazing on Native Rangeland by Kristin Miller, USDA Natural Resources Conservation Service

Pooled Sales Add Value to Cull Cows by Rebekka Martin and Jana Beckman

The Grass Dance

UNL Offers Online Course in Turf Diseases

Second National Conference on Grazing Lands

Seed Dormancy – the Uncertainty in Native Grass Seeding

Prairie Pines to Benefit UNL Programs by Steven Ress, Water Center, UNL

Platte River Trust Begins Study of Birds Breeding in Grasslands by Felipe Chavez-Ramirez, Platte River Whooping Crane Maintenance Trust