Life Sciences Commons^™

Map-Making Of Plant Biomass And Leaf Area Index For Management Of Protected Areas, Loretta Gratani, Maria Fiore Crescente

Aliso: A Journal of Systematic and Floristic Botany

An inventory of the vegetation types of Castelporziano Estate (Rome), including examples of Mediterranean ecosystems in excellent preserved condition, was compiled. Because Leaf Area Index (LAI) changed with forest structure and developmental stages, maximum LAI provided a good estimate of maximum biomass accumulation. Plant biomass estimation, ranging from 61 tons ha^-1 to 360 tons ha^-1, fitted well into 14 biomass classes; the highest values (from 301 tons ha^-1 to 360 tons ha^-1) were related to stratified forested vegetation types, including the more mature Pinus pinea plantations, Quercus ilex evergreen forests and broad leaf mixed …

Normalizing Novelty: Regulating Biotechnological Risk At The U.S. Epa, Les Levidow, Susan Carr

RISK: Health, Safety & Environment (1990-2002)

Drs. Levidow and Carr examine EPA's regulation of biotechnology in the field of genetically modified organisms.

'Texas Maroon’ Bluebonnet, Wayne A. Mackay, Jerry M. Parsons, Greg Grant, Steve George, Tim D. Davis, Larry Stein

SFA Gardens Publications

The Texas state flower, the bluebonnet, encompasses all six of the Lupinus species native to Texas. The most widespread and popular bluebonnet, Lupinus texensis Hook., is a winter annual that produces violet-blue [violet-blue group 96A, Royal Horticultural

Society (RHS), 1982] racemes in early to midspring and is predominately self-pollinating.

The Texas Dept. of Transportation uses this species widely for floral displays along roadsides throughout much of the state (Andrews, 1986). Rare white and even rarer pink variants exist in native populations, and a breeding project was initiated in 1985 to develop bluebonnets with novel flower colors for use as bedding …

Arkansas Animal Science Department Report 1999, Zelpha B. Johnson, D. Wayne Kellogg

Arkansas Agricultural Experiment Station Research Series

No abstract provided.

Temporal And Spatial Variations In Macrofouling Of Silicone Fouling-Release Coatings, Christina Darkangelo Wood, Kathryn Truby, Judith Stein, Deborah Wiebe, Eric Holm, Dean Wendt, Celia Smith, Christopher Kavanagh, Jean Montemarano, Geoff Swain, Anne Meyer

Biological Sciences

Nontoxic, low surface free energy silicone coatings having reduced biofouling adhesion strength have been developed as an alternative to antifouling paints. Silicone coatings permit macrofouling to adhere; however, fouling can be removed easily by water pressure or light scrubbing. One of the current methods used to evaluate the performance of non-toxic silicone fouling-release coatings relies heavily on fouling coverage. The organismal community structure as well as total coverage can affect the ease of fouling removal from these coatings. This paper explores fouling coverage and organismal adhesion over time. Long-term fouling coverage data were collected at four sites (in Massachusetts, Hawaii …

Mango Growing In Western Australia, P R. Johnson, D C. Parr

Bulletins 4000 -

This bulletin covers mango growing in Western Australia in Kununurra, Carnarvon, Kimberly, Gingin, Perth regions. Details include climate requirements, soils, propagation, planting, spacing, weed control, nutrition, pests, diseases and disorders, pruning, harvesting and packing, ripening and storage, and processing.

Bulletin 4430 - Growing Bulb Onions In Western Australia, John Burt

Bulletins 4000 -

The bulb onion (Allium cepa var. cepa), together with chives, garlic, leeks, shallots and spring onions are members of the Amaryllidaceae family. The origins of the plant are from the Middle East, where it grew in an arid climate and on shallow, stony soils. Onions were grown as a food crop 5000 years ago in Egypt.

The edible part is a bulb that consists of swollen leaf bases. It contains 90 to 95 per cent water and provides soluble carbohydrates and vitamin C. The onion is the most common flavouring and aromatic vegetable in the world. The flavour is characterised …

Bulletin 4426 - Carrots From Western Australia - At A Glance, Allan Mckay, Geraldine Pasqual

Bulletins 4000 -

Western Australia produces a wide range of horticultural commodities including fruit, vegetables, flowers, nursery products and wine as part of its fast growing $400 million horticultural industry. Natural advantages such as the mild climate and clean environment, suitable soils and water make Western Australia an ideal place to produce a variety of high quality produce for domestic and international markets.

Western Australia has a strong carrot industry with production from well established farms supplying domestic and export markets. Industry members aim for a high level of customer satisfaction by offering popular varieties, premium quality and the ability to consistently supply …

Sources Of Information For Commercial Farms: Usefulness Of Media And Personal Sources, Brent A. Gloy, Jay Akridge, Linda D. Whipker

Department of Agricultural Economics Faculty Publications

The usefulness of several information sources is examined for U.S. farms with sales in excess of $100,000. The results indicate that crop/livestock-specific magazines and general farm magazines are the most useful information sources. Analyses indicate that the types and number of different commodities that the farm produced, as well as Internet use, are the most consistent predictors of attitudes toward various information sources. However, characteristics that explain attitudes toward different information sources vary substantially across the information sources considered.

Computer And Internet Adoption On Large U.S. Farms, Brent A. Gloy, Jay Akridge

Department of Agricultural Economics Faculty Publications

The adoption of the personal computer and the Internet is studied within a sample of large U.S. farms. Factors such as age and education influence the adoption of both technologies. Likewise, strong relationships exist between the adoption of each technology and the sophistication of farm management and the complexity of the farm business. After controlling for computer adoption, the results suggest there remain several factors limiting Internet adoption. It appears that producers are unsure as to how the Internet can best be used to create value in their farm businesses.

Western Australian Agriculture - Key Achievements 1999 - 2000, Agriculture Western Australia

Farm Systems and Economics published reports

Agricultural continue to underpinning employment opportunities and the financial viability of the agricultural sector. While the traditional industries such as cereals, wool exports grow and meat remain the most valuable, the growth in oilseeds, pulses, viticulture and horticulture is significant. The resurgence in the live animal trade has been an important milestone for Western Australia and it is essential that we continue to build on this.

To maintain competitiveness, WA farmers need to be at the cutting edge of new technology, responsive to changing customer needs and actively developing new trade opportunities.

Progress Rural Western Australia and Better Business programs …

Richard Goldschmidt And The Crossing-Over Controversy, Michael Dietrich, Marsha Richmond

Dartmouth Scholarship

This book, Perspectives on Genetics, collects more than 100 of these essays, which cumulatively are a history of modern genetics research and its continuing evolution.

Of Moths And Men: Theo Lang And The Persistence Of Richard Goldschmidt's Theory Of Homosexuality, 1916-1960, Michael Dietrich

Dartmouth Scholarship

Using an analogy between moths and men, in 1916, Richard Goldschmidt proposed that homosexuality was a case of genetic intersexuality. As he strove to create a unified theory of sex determination that would encompass animals ranging from moths to men, Goldschmidt's doubts grew concerning the association of homosexuality with intersexuality until, in 1931, he dropped homosexuality from his theory of intersexuality. Despite Goldschmidt's explicit rejection of his theory of homosexuality, Thee Lang, a researcher in the Genealogical-Demographic Department of the Institute for Psychiatric Research in Munich, revived it, maintained Goldschmidt's association with it, and argued on its behalf in publications …

From Gene To Genetic Hierarchy: Richard Goldschmidt And The Problem Of The Gene, Michael Dietrich

Dartmouth Scholarship

No abstract provided.

The Problem Of The Gene, Michael Dietrich

Dartmouth Scholarship

During the early 20th century the diverse practices of genetics were unified by the concept of the gene. This classical gene was simultaneously a unit of structure, function, mutation, and recombination. Starting in the 1940s, however, the classical gene began to fragment. Today when we speak of a gene for some malady, a regulatory gene, a structural gene, or a gene frequency, it is entirely possible that we are deploying different gene concepts even though we are using the same term. The problem of the gene addresses the fragmentation of the classical gene concept by asking to what extent a …

Unifying Biology: Evolutionary And Molecular Biology: Science Perspectives On Divine Action, Michael Dietrich

Dartmouth Scholarship

Book Review of Evolutionary and Molecular Biology: Science Perspectives on Divine Action by Robert J. Russell, William R. Stoeger, SJ and Francisco J. Ayla.

Polycythemia Of Newborn Infant : Normal Saline Partial Exchange Transfusion(ภาวะเลือดขนในเด็กแรกเกิด : การเปลี่ยนถ่ายเลือดบางส่วนด้วย นํ้า..., Petcharindr Yamarat, Suparach Karnjanavanich

The Thai Journal of Pharmaceutical Sciences

Polycythemia can cause abnormalities in many systems such as nervous system, cardiovascular system and pulmonary system. The standard treatment for polycythemia is plasma partial exchange transfusion. However, the use of blood and components of blood in ...

Whale Shark Records And Conservation Status In Venezuela, Aldemaro Romero Jr., A. Ignacio Agudo, C. Salazar

Publications and Research

No abstract provided.

Jacques Besson, Cave Eels And Other Alleged European Fishes, Aldemaro Romero Jr., Zeia Lomax

Publications and Research

No abstract provided.

Fine-Tuning The Exercise Formula, David Swain

Rehabilitation Sciences Faculty Publications

(First paragraph) One hundred years ago, our forebears consumed more calories than we do today, yet they were leaner. Labor-saving devices were a rarity, and so in everyday life most people worked very hard physically. Obesity was present, of course, but afflicted only a small fraction of the population. We are not as fortunate today.

Precision Farming Protocols. Part 2. Comparison Of Sampling Approaches For Precision Phosphorus Management, David E. Clay, Jiyul Chang, C. Gregg Carlson, Doug Malo, Sharon A. Clay, Mike Ellsbury

Agronomy, Horticulture and Plant Science Faculty Publications

Research is needed to compare the different techniques for developing site‐specific phosphorus (P) recommendations on a field‐wide basis. The objective of this study was to determine the impact different techniques for developing site‐specific P recommendation maps on yield and profitability. Enterprise analysis combined with a crop simulation model and detailed field characterization was used to estimate the value of spatial P information in a system where N was not limiting. The systems evaluated were continuous corn (Zea mays) and corn and soybean (Gfycine max) rotations where sampling and fertilizer applications were applied annually and semi‐annually, respectively. The sampling techniques tested …

A Diet Study Of Australia's Most Critically Endangered Mammal, Gilbert's Potoroo, Potorous Gilbertii (Marsupialia : Potoroidae), Vinh Nguyen

Theses : Honours

After 125 years of presumed extinction, Gilbert's Potoroo (Potorous gilbertii) was rediscovered in 1994 in Two Peoples Bay Nature Reserve, Albany. As only one population is known to exist, conservation is of prime importance. Faecal analysis was used to examine the diet of P. gilbertii. The species was found to be predominantly mycophagous (fungus-feeding) with invertebrate and plant matter fanning only a small part of its diet. Fungal material made up more than 90% of faecal matter throughout the year. A total of 44 fungal spore types were discerned. Of these, five were tentatively identified to species level with the …

Modelling Age- And Density-Related Gas Exchange Of Picea Abies Canopies In The Fichtelgebirge, Germany, Eva Falge, John D. Tennhunen, Ronald J. Ryel, Martina Alsheimer, Barbara Köstner

Wildland Resources Faculty Publications

Differences in canopy exchange of water and carbon dioxide that occur due to changes in tree structure and density in montane Norway spruce stands of Central Germany were analyzed with a three dimensional microclimate and gas exchange model STANDFLUX. The model was used to calculate forest radiation absorption, the net photosynthesis and transpiration of single trees, and gas exchange of tree canopies. Model parameterizations were derived for six stands of Picea abies (L.) Karst. differing in age from 40 to 140 years and in density from 1680 to 320 trees per hectare. Parameterization included information on leaf area distribution from …

Dg93, A Nodule-Abundant Mrna Of Datisca Glomerata With Homology To A Soybean Early Nodulin Gene, Nancy Fujishige

Biology Faculty Works

We have isolated a 590-bp full-length cDNA clone designated Dg93, an mRNA that is highly expressed in symbiotic root nodules of the actinorhizal host Datisca glomerata. Dg93 mRNA encodes a deduced polypeptide of 105 amino acids with significant identity (74%) to the soybean (Glycine max) early nodulin (ENOD) gene GmENOD93 (Kouchi and Hata, 1993). Dg93 mRNA is abundant in nodules at 4 weeks post inoculation, the earliest time assayed, and steady-state mRNA levels remain elevated 11 weeks after inoculation. Spatial patterns of Dg93 mRNA expression are complex, with transcript accumulation in the nodule lobe meristem, early infection zone, periderm, and …

Feeding Fitness And Quality Of Domesticated And Feral Predators: Effects Of Long-Term Rearing On Artificial Diet, Allen Carson Cohen

United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications

Predatory geocorids, Geocoris punctipes Say (Geocoridae: Hemiptera), that had been reared (domesticated) for over 6 years (60 continuous generations) on an artificial diet were compared with feral (F1) counterparts to determine possible domestication-associated losses in predatory capabilities. Using adult female predators provided with either tobacco budworm larvae, Heliothis uirescens F., or pea aphids, Acyrthosiphon pisum Harris, as prey, I measured predator weights, handling time with a single prey, amount extracted, consumption rate, and feeding (gut) capacity. Domesticated females were significantly smaller than ferals, weighing 4.53 mg versus 5.09 mg, respectively. Domestication did not significantly influence handling times, which averaged 131 …

Kernel Morphology Variation In A Population Derived From A Soft By Hard Wheat Cross And Associations With End-Use Quality Traits, Christine J. Bergman, Daisy G. Gualberto, Kimberly A. Garland-Campbell, Mark E. Sorrells, Patrick L. Finney

United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications

Physical attributes, including kernel morphology, are used to grade wheat, and indicate wheat milling and baking quality (MBQ). Using a recombinant inbred population derived from a soft by hard wheat cross, this study quantified kernel traits' sources of variation, studied their heritability, and relationships between morphological and MBQ traits. Transgressive segregation occurred for all traits. Thousand-kernel weight (TKW) and kernel texture (NIR-T) were primarily influenced by genotype and test weight (TW) mainly by year. NIR-T had the highest heritability. Low genetic correlation (GCOR) between kernel length (LEN) and width WID) suggest independent inheritance. NIR-T and LEN, or WID, showed low …

Elongated Chambers For Field Studies Across Atmospheric Co2 Gradients, H. B. Johnson, H. W. Polley, R. P. Whitis

United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications

We describe a field facility that controls CO₂ along continuous gradients from superambient to subambient concentrations. The facility consists of two transparent, tunnel-shaped chambers, each 1-m wide and tall and 60-m long. Pure CO₂ is injected into one chamber during daylight to initiate a superambient CO₂ gradient (550–350 µmol mol^–1). Ambient air is introduced to the second chamber to initiate a subambient CO₂ gradient (350–200 µmol mol^–1). CO₂ concentrations at night are regulated at 150 µmol mol^–1 above daytime values along each gradient. The CO₂ gradients are maintained by …

The Molecular Characterisation Of Selected Epidemic Associated Gram Negative Pathogens In Southern Ireland, Mairéad Daly

Theses

This study was undertaken to evaluate various molecular techniques for the analysis of Gram negative bacterial associated epidemics. The first investigation dealt with bovine mastitis outbreaks, where the causative agent was identified as Pseudomonas aeruginosa. Epidemiological findings, suggested that all herds were infected from teat wipes that were contaminated with this organism. Initial investigations using the polymerase chain reaction (PCR), indicated a possible clonal relationship between all outbreak linked strains, with one exception. This finding was confirmed following pulsed-field gel electrophoresis (PFGE) and ribotype analysis. PCR was again employed to study a rather unusual epidemic, involving Salmonella tel-el-kebir over a …

Whole Genome Sequencing Of L.Monocytogenes And L.Innocua : A Basis For Comparative Genomics Of The Genus Listeria, Rachel Purcell

Theses

Listeria monocytogenes is a gram-positive, food-borne human and animal pathogen. L.innocua is a non-pathogenic species the most closely related to L. monocytogenes. Comparative genomics between a pathogenic and a closely related non-pathogenic species is a powerful approach for identifying genes or regions on the chromosome, which might be involved in virulence. Therefore whole genome sequencing of these two organisms was undertaken. The strategy used was based on a random approach combined with end-sequencing of a medium insert library for the finishing phase. Based on the available sequence data for these two species an in silico analysis for the presence of …

Applications Of The Atomic Force Microscope Within The Fields Of Haematology And Cytogenetics, Margaret O'Reilly-Crowley

Theses

Atomic force microscopy [AFM] has become a rapidly developing interdisciplinary field of research in recent years. The technique, including instrumentation and specimen preparation methods, is now more sophisticated and its application has increased dramatically. The key advantage of AFM is in providing three-dimensional images of samples imaged. Both size and shape of samples imaged can be obtained allowing their subsequent quantification. Red blood cells [RBCs] and chromosomes were imaged in this work. A brief overview of the current status of biomedical AFM, has been presented in the review.

Measurement of mean cell volume [MCV] of immobilised red blood cells with …