Life Sciences Commons^™

Developmental Coordination Disorder: A Discrete Disability, Beth P. Hands, Dawne Larkin

Health Sciences Papers and Journal Articles

Children with Developmental Coordination Disorder (DCD) have a motor learning disability that reduces their ability to interact with the environment and compromises their social and emotional development. Accordingly, these children should be given the extra assistance and consideration given to children with other learning difficulties. Even though many countries have well developed policies to support students at educational risk, children with movement difficulties are not widely considered to be members of this category. This paper argues for a change in education policy and practice in order to better support children with DCD or Motor Learning Disability (MLD). Improved teacher education …

Hawaiian Freshwater Polychaeta: A Potentially Substantial Trophic Component Of Stream Depositional Habitats, M. Eric Benbow, Albert J. Burky, Carl M. Way

Biology Faculty Publications

In this paper we report the widespread occurrence of large annelids (Polychaeta: Nereididae) in Hawaiian stream depositional habitats, drawing attention to the lack of knowledge of Hawaiian stream energetics. Specimens of Namalycastis sp. were collected from five Hawaiian Islands from May–July 1995 and from the island of Maui from July–December 1999 and April–July 2000. Most specimens collected were N. hawaiiensis, while two specimens of N. abiuma were collected from a single site on the island of Molokai. Specimens were collected from elevations ranging from 3–240 m; several collections were from sites above at least one major (> 15 m …

Recognition Of Bromus Richardsonii And B. Ciliatus: Evidence From Morphology, Cytology, And Dna Fingerprinting (Poaceae: Bromeae), Paul M. Peterson, Jacques Cayouette, Yasas S. N. Ferdinandez, Bruce Coulman, Ralph E. Chapman

Aliso: A Journal of Systematic and Floristic Botany

Since our goal was to determine characteristic differences between Bromus richardsonii and B. ciliates, a discriminate analysis (DA), principal components analysis (PCA), multidimensional scaling (MDS), bivariate analysis, and an amplified fragment length polymorphisms (AFLP) analysis were undertaken on 93 herbarium specimens and 31 field-collected populations. A cytological survey of B. ciliates, B. richardsonii, and B. mucroglumis confirm previous reports that the first species is diploid (2n = 14) and the latter two are tetraploid (2n = 28). All taxa were correctly classified in the DA and important characters for each of the species were identified. Bromus …

Morphological Differences Among Two Populations Of The Hooded Pitcher Plant, Sarrancenia Minor, And Its Usefulness As An Indicator Species For Bog And Seepage Savanna Communities, Ryan Meyer, Justin Walguarnery, Dawn Beaulac, Kelly Hughes, Trish Brown

All Volumes (2001-2008)

The ultimate goal of this project is to develop a model of Sarracenia minor morphology under various environmental conditions, which can then be used to assess the overall health of these ecosystems. Because S. minor is sensitive to disturbance it may be a good candidate for use as an indicator species. Decline in habitat quality should be detectable as changes in the population dynamics and morphology of S. minor, thereby indicating that intervention may be necessary to maintain habitat viability. For instance, a population that consists primarily of large mature individuals indicates that the habitat may not be suitable …

Designing An Intelligent System For Genetic Biology Learning, Seenivasagam S.Gangatharan

Student Works (2000-2009)

With the changing education scenario, an issue which has come strongly on how to create intelligent tutoring system to educate learners in a more intelligent way. So a need has emerged for the development of an intelligent tutoring system. This part or thesis describes the design of a collection of intelligent systems under the name GENETIC BIOLOGY for basic genetic biology tutoring. GENETIC BIOLOGY consist of three intelligent systems which arc designed for cell, DNA and gene learning. GENETIC BIOLOGY systems employ natural language processing and various techniques normally used in the construction of intelligent systems. Production rules and frames …

Bulletin 4475 - Exotic Diseases - Poultry, Agriculture Western Australia

Bulletins 4000 -

An exotic disease is a disease that is not present in Australia.

If an exotic disease did occur in Australia it would cause production losses, stock deaths and stop exports of primary production. When export markets are lost they can only be re-established once it is proven the disease is eradicated.

Genes, Categories, And Species: The Evolutionary And Cognitive Causes Of The Species Problem, Michael Dietrich

Dartmouth Scholarship

Review of Genes, Categories, and Species: The Evolutionary and Cognitive Causes of the Species Problem by Jody Hey.

Firefly Flashing Is Controlled By Gating Oxygen To Light-Emitting Cells, G. S. Timmins, F. J. Robb, C. M. Wilmot, S. K. Jackson, H. M. Swartz

Dartmouth Scholarship

Although many aspects of firefly bioluminescence are understood, the mechanism by which adult fireflies produce light as discrete rapid flashes is not. Here we examine the most postulated theory, that flashing is controlled by gating oxygen access to the light-emitting cells (photocytes). According to this theory, the dark state represents repression of bioluminescence by limiting oxygen, which is required for bioluminescence; relief from this repression by transiently allowing oxygen access to the photocytes allows the flash. We show that normobaric hyperoxia releases the repression of light emission in the dark state of both spontaneously flashing and non-flashing fireflies, causing continual …

Hard Cases For Autonomy, Respect, And Professionalism In Medical Genetics, Roger B. Dworkin

Articles by Maurer Faculty

No abstract provided.

Genetic Diversity In The Bo'an, Salar, And Dongxiang : Co-Resident Muslim Populations In Gansu Province, P.R. China, Thomas Baric

Theses : Honours

Patterns s of genetic diversity within and between three co-resident Muslim populations from Gansu Provence in the Peoples Republic of China were examined and the results contrasted with historical information. This study of members of the Bo'an, Salar and Dongxiang communities will contribute to a clearer understanding of the origins and migratory patterns of Muslims in PR China, and more generally the effect of population subdivision on gene pool structure and composition. Ten autosomal and live Y-chromosome microsatellite loci were genotyped to determine allele distribution patterns. Subsequently, the D-loop region of mitochondrial DNA was sequenced to complement the autosomal and …

Replacement Of The Troglomorphic Population Of Rhamdia Quelen (Pisces: Pimelodidae) By An Epigean Population Of The Same Species In The Cumaca Cave, Trinidad, W.I. 2001 Nss Convention, Aldemaro Romero Jr., Kelly M. Paulson, Joel E. Creswell, Ruth Baker, Anuradha Singh, Annabelle Mckie, Manna

Publications and Research

No abstract provided.

Cetaceans Of Venezuela: Their Distribution And Conservation Status, Aldemaro Romero Jr., A. Ignacio Agudo, Steven M. Green, Giuseppe Notarbartolo Di Sciara

Publications and Research

No abstract provided.

Humboldt’S Alleged Subterranean Fish From Ecuador, Aldemaro Romero Jr., Kelly M. Paulson

Publications and Research

No abstract provided.

Return To The Cumaca Cave, Trinidad, W.I, Aldemaro Romero Jr., Anuradha Singh, Annabelle Mckie, Michael Manna, Ruth Baker, Kelly M. Paulson

Publications and Research

No abstract provided.

Efficacy And Safety Of Fluconazole Combined With Amphotericin B For Treatment Of Cryptococcal Meningitis In Patients With Aids(ประสิทธิผลและความปลอดภัยของการใช้ฟลูโคนาโซ..., Chankig Puttilerpong, Somsit Tansuphaswadikul, Duangchit Panomvana Na Ayudhya

The Thai Journal of Pharmaceutical Sciences

Cryptococcal meningitis (CM) is the most common life-threatening opportunistic fungal infection in patients with AIDS. The purpose of this study was to compare the efficacy and safety of giving high dose of amphotericin B for the first two weeks of thera...

In Vitro Hepatotoxicity Study Of Barakol Using Human Hepatoma Cell Line Hepg2(การศึกษาความเป็นพิษของบาราคอลต่อตับ โดยการทดสอบด้วยเซลล์มะเ..., Somsong Lawanprasert, Chaiyo Chaichantipyuth, Surachai Unchern, Yupin Lawanprasert, Daret St.Clair

The Thai Journal of Pharmaceutical Sciences

Human hepatoma cell line HepG2 was used to assess the hepatotoxic effects of barakol, isolated from young leaves of Cassia siamea. Barakol at concentrations of 0.25, 0.50, 0.75 and 1 mM were added to HepG2 cells for 24, 48, 72 and 96 hours. Cytotoxicity ...

Using Habitat Characteristics And Predictive Gis Modelling To Aid In Conserving The Heath Mouse (Pseudomys Shortridgei) In Lake Magenta Nature Reserve, Kirsty Quinlan

Theses : Honours

The Heath Mouse (Pseutlomys shortridgei) was formerly widely distributed in Western Australia and Victoria. However, now it is known only to exist in areasof fragmented habitat. Heath Mouse populations have not been investigated in Western Australia, as it was thought to be extinct in the state until its rediscovery in 1987. It is known from only tour locations, and from these, the highest numbers known are probably the 18 captures of this mouse from five years of trapping in Lake Magenta Nature Reserve. Given the few numbers of Heath Mice, the purpose of this study was to identify …

Developmental Tendril Morphology In Echinocystis Lobata (Michaux) Torrey And Gray (Cucurbitaceae), Theodore Bowen Guthrie

Dissertations and Theses @ UNI

Tendrils are generally defined as coiling organs used as mechanical supports and for climbing. The morphological nature of the tendril and the branching pattern of the axillary bud complex (ABC) in the family Cucurbitaceae have been the subject of investigation for over a hundred years and as of yet there is no unifying interpretation of their morphological values. The tendril in the Cucurbitaceae has been hypothesized to be homologous to a leaf, a flower, a stem, and a combination of stem and leaf. Echinocystis lobata (Michaux) Torrey and Gray was used as a model to study the ontogeny of the …

Acclimation To Hypoxia Increases Survival Time Of Zebrafish, Danio Rerio, During Lethal Hypoxia, Bernard B. Rees, F Sudradjat, J W. Love

Biological Sciences Faculty Publications

Survivorship of zebrafish, Danio rerio, was measured during lethal hypoxic stress after pretreatment in water at either ambient oxygen or at a lowered, but nonlethal, level of oxygen. Acclimation to nonlethal hypoxia (pO2 @ 15 Torr; ca. 10% air-saturation) for 48 hr significantly extended survival time during more severe hypoxia (pO2 @ 8 Torr; ca. 5% air-saturation) compared to survival of individuals with no prior hypoxic exposure. The magnitude of the acclimation effect depended upon the sex of the fish: hypoxia pretreatment increased the survival times of males by a factor of approximately 9 and that of females by a …

What Makes The Rhizobia-Legume Symbiosis So Special?, Michelle Lum

Biology Faculty Works

No abstract provided.

Fallow Versus Wheat Cropping Of Unamendedand Manure-Amended Soils Related To Mycorrhizal Colonization, Yield, And Plant Nutrition Of Dry Bean And Sweet Corn, Brett L. Allen, Von D. Jolley, Charles W. Robbins, Larry L. Freeborn

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

Previous studies reported manure application to eroded Portneuf silt loam soil (Coarse-silty, mixed, superactive, Durinodic Xeric Haplocalcid) improved dry bean (Phaseolus vulgaris L., cv. Viva) yield to levels of topsoil. These yield increases only correlated with whole-plant zinc (Zn) concentration and soil organic matter. This might be related to enhanced arbuscular mycorrhizal (AM) colonization stimulated by manure application. A greenhouse study with dry bean suggested a relationship between manure application, increased AM colonization, and whole-plant Zn uptake, while field studies with wheat (Triticum aestivum L.) and sweet corn (Zea mays L.) did not. To clarify the apparent …

Methyl-Β-Cyclodextrin: An Alternative Carrier For Intravenous Infusion Of Palmitate During Tracer Studies In Swine (Sus Scrofa Domestica), Diane Wray-Cahen, Thomas J. Caperna, Norman C. Steele

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

Fatty acid-free albumin has been the standard carrier for intravenous infusion of fatty acids to study in vivo lipid metabolism. However, subjects can have adverse reactions to infusion of albumin. We sought an alternative to albumin as a carrier for intravenous infusion of fatty acids, using the pig as a model. Cyclodextrins are naturally occurring water-soluble molecules that can serve as carriers for lipid-soluble compounds. ¹³C-palmitate was complexed to either 20% methyl-β-cyclodextrin, 20% 2-hydroxypropyl-β-cyclodextrin, or 5% porcine albumin (isotopic purity of infusates: 99.22±0.06%). ¹³C-palmitate-albumin was infused under fed conditions and ¹³C-palmitate-methyl-β-cyclodextrin was infused under fasted and fed …

Mechanical Barrier For Preventing Climbing By Lesser Mealworm (Coleoptera: Tenebrionidae) And Hide Beetle (Coleoptera: Dermestidae) Larvae In Poultry Houses, Christopher Geden, David Carlson

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

Mechanical barriers consisting of bands of polyethylene terepthalate resin attached to wooden posts by latex caulk adhesive and staples were 100% effective in preventing passage of dispersing lesser mealworm, Alphitobius diaperinus (Panzer), larvae in the laboratory. Barriers continued to be 100% effective after being held in a caged layer poultry house for 3 mo. Polyethylene terepthalate barriers installed on support posts in a pullet house in Brooker, FL, were>92% effective against natural populations of lesser mealworm larvae 6 mo. after installation. The barriers also were >94% effective against natural populations of larvae of the hide beetle, Dermestes maculatus DeGeer, …

Hymenopteran Pupal Parasitoids Recovered From House Fly And Stable Fly (Diptera: Muscidae) Pupae Collected On Livestock Facilities In Southern And Eastern Hungary, Jerome A. Hogsette, Róbert Farkas, Csaba Thuróczy

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

This field survey, the second noting the occurrence and diversity of filth fly pupal parasitoid fauna in Hungary, was performed on beef and dairy feedlots and swine facilities in the southern and eastern parts of the country. The filth flies Musca domestica L. And Stomoxys calcitrans (L.) Were the two most commonly parasitized hosts. The three species of Spalangia recovered, in decreasing order of abundance, were S. Cameroni Perkins, S. Nigroaenea Curtis, and S. Endius Walker. Pachycrepoideus vindemiae Rondani, Trichomalopsis sp., two apparently undetermined Diapriidae spp. And one apparently undetermined Brachycera sp. Are believed to be new country records.

Grain Color Stability And Classification Of Hard White Wheat In The U.S., C. J. Peterson, D. R. Shelton, T. J. Martin, R. G. Sears, E. Williams, R. A. Graybosch

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

Variability in grain color of hard white wheat was investigated in cultivars grown over two years in Nebraska and Kansas and related to variation observed in grain hardness, kernel weight, kernel size, and protein content and to color of ground meal and flour. Grain color was scored subjectively, through visual evaluation, and objectively through use of a colorimeter. Of the 543 hard white wheat samples examined by USDA-GIPSA grain inspectors, 15.5% were scored as visually darker than the 1990 grain color standard established as a minimum for hard white wheat classification. The remaining samples were scored as having grain color …

Assessing Site Vulnerability To Phosphorus Loss In An Agricultural Watershed, Andrew N. Sharpley, Richard W. Mcdowell, Jennifer L. Weld, Peter J. A. Kleinman

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

A P index was developed as a tool to rank agricultural fields on the basis of P loss vulnerability, helping to target remedial P management options within watersheds. We evaluated two approaches, a soil P threshold and components of a P index, by comparing site vulnerability estimates derived from these two approaches with measured runoff P losses in an agricultural watershed in Pennsylvania. Rainfall–surface runoff simulations (70 mm h^-1 for 30 min) were conducted on 57 sites representing the full range of soil P concentrations and management conditions found in the watershed. Each site was comprised of two, abutting …

History, Current Status, And Collaborative Researchprojects For Bemisia Tabaci, M. R. V. Oliveira, T. J. Henneberry, P. Anderson

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

Bemisia tabaci was described over 100 years ago and has since become one of the most important pests worldwide in subtropical and tropical agriculture as well as in greenhouse production systems. It adapts easily to new host plants and geographical regions and has now been reported from all global continents except Antarctica. In the last decade, international transport of plant material and people have contributed to geographical spread. B. tabaci has been recorded from more than 600 plant species and there may be many additional hosts not yet formally documented. Biotypes have been identified in different areas of the world …

Quantitative Trait Loci Associated With Milling And Baking Quality In A Soft X Hard Wheat Cross, Kimberley Garland Campbell, Patrick L. Finney, Christine J. Bergman, Daisy G. Gualberto, James A. Anderson, Michael J. Giroux, Dimuth Siritunga, Jiaqian Zhu, Francois Gendre, Catherine Roué, Aliette Vérel, Mark E. Sorrells

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

Interclass hybridization between soft and hard wheat (Triticum aestivum L.) results in new genetic combinations of potential value.

Gis And Distributed Watershed Models Ii, Fred L. Ogden, Jurgen Garbrecht, Paul A. Debarry, Lynn E. Johnson

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

This paper presents representative applications and models that can take advantage of spatially distributed data in a geographic information system (GIS) format for watershed analysis and hydrologic modeling purposes. The intention is to inform hydrologic engineers about the current capabilities of GIS, hydrologic analysis modules, and distributed hydrologic models, and to provide an initial guide on implementing GIS for hydrologic modeling. This paper also discusses key implementation issues for individuals and organizations that are considering making the transition to the use of GIS in hydrology. Widespread use of GIS modules and distributed watershed models is inevitable. The controlling factors are …

Food Webs, Risks Of Alien Enemies And Reform Of Biological Control, D. R. Strong, R.W. Pemberton

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

As ilwasions of alien species mount, biological control will become an increasingly important tool of conservation and agriculture. In an effort to understand indirect interactions in biological control, we review food web ecology in terms of resource competition, trophic cascades, intraguild predation, apparent competition, omnivory and a diverse set of tritrophic interactions. The most inclusive study suggests that food webs in biological control are simpler than in natural communities. Risks to non-target species created by biological control have been studied seriously for only about 20 years, and knowledge of these risks is incomplete. The greatest risks are known to be …