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2004

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Articles 2671 - 2687 of 2687

Full-Text Articles in Life Sciences

Effects Of Different Plant Species And Different Sowing Dates On Forage Yield, Grazing Capacity And Estimated Carcass Weight In The Continental Climate Zones, Sadik Çakmakçi, Bi̇lal Aydinoğlu, Mehmet Arslan, Mehmet Teti̇k Jan 2004

Effects Of Different Plant Species And Different Sowing Dates On Forage Yield, Grazing Capacity And Estimated Carcass Weight In The Continental Climate Zones, Sadik Çakmakçi, Bi̇lal Aydinoğlu, Mehmet Arslan, Mehmet Teti̇k

Turkish Journal of Veterinary & Animal Sciences

This research was conducted to study the effects of artificial sowing with various plant species and different sowing dates on forage yield, grazing capacity and estimated carcass weight in rangelands under continental dry conditions. Artificial rangelands were established on Akpınar plateau near Kemer-Burdur 1675 m above sea level using 4 different plant species sown at 5 different sowing dates. Later, grazing capacity and carcass weight were estimated in terms of forage yield. The results showed that the best sowing date of alfalfa (Medicago sativa L.) was sowing date 4 (the last week of October) and 1447 cattle could graze in …


Hypertrophic Osteodystrophy In The Dog: 18 Cases, Kürşat Özer, Kemal Altunatmaz, Ahmet Gülçubuk Jan 2004

Hypertrophic Osteodystrophy In The Dog: 18 Cases, Kürşat Özer, Kemal Altunatmaz, Ahmet Gülçubuk

Turkish Journal of Veterinary & Animal Sciences

Hypertrophic osteodystrophy was diagnosed in 16 male and 2 female puppies aged between 2.5 and 8 months. All animals had stiff and stilted gait, painful swellings in the metaphyseal areas of the antebrachium and tibia, pyrexia, weakness and diarrhoea as common symptoms. Radiological examination of the affected areas showed extraperiosteal bone proliferations. With chronicity, the new bone formation spanned the entire diaphysis from the distal to the proximal metaphysis. Two dogs were treated with parenteral administration of analgesics, corticosteroids, vitamin C, and antibiotics in addition to dietary management. These 2 puppies, which had shown a clinical improvement during the long …


In Vitro Effects Of Linamarin, Amygdalin And Gossypol Acetic Acid On Hyaluronidase Activity, Sperm Motility And Morphological Abnormality In Bull Sperm, Sadetti̇n Tanyildizi, Tanzer Bozkurt Jan 2004

In Vitro Effects Of Linamarin, Amygdalin And Gossypol Acetic Acid On Hyaluronidase Activity, Sperm Motility And Morphological Abnormality In Bull Sperm, Sadetti̇n Tanyildizi, Tanzer Bozkurt

Turkish Journal of Veterinary & Animal Sciences

In vitro effects of various doses of linamarin, amygdalin and gossypol acetic acid on sperm hyaluronidase activity and the percentages of motile spermatozoa and morphology were investigated in bull sperm. Holstein bulls (n = 12) aged between 2 and 3 were used in the study. Semen samples were collected from each animal 3 times and used for incubation. The samples were divided into 5 equal parts and mixed (v/v) with linamarin at doses of 0.5, 0.75, 1 and 2 µM, with amygdalin at doses of 0.4, 0.8, 1 and 2 µM and with gossypol acetic acid at doses of 2.5, …


Anaesthetic Effects Of Quinaldine Sulphate Together With The Use Of Diazepam On Oreochromis Niloticus L. 1758 (Cichlidae) At Different Temperatures, Mahmut Yanar, Ercüment Genç Jan 2004

Anaesthetic Effects Of Quinaldine Sulphate Together With The Use Of Diazepam On Oreochromis Niloticus L. 1758 (Cichlidae) At Different Temperatures, Mahmut Yanar, Ercüment Genç

Turkish Journal of Veterinary & Animal Sciences

The anaesthetic effects of quinaldine sulphate (QS) together with diazepam (D) on tilapia (Oreochromis niloticus) (20-25 g) were studied at different temperatures. The application of QS with D significantly increased the anesthesia level of QS in the fish. Depending on temperature, the fish entered light or deep anesthesia levels with the use of QS alone at 10 or 35 mg/l, compared to 5 or 20 mg/l when used together with D (1-2 mg/l). In addition, when used together with QS, D eliminated the excitement and hyperactivity of the fish compared to QS alone. A rise in temperature from 18 °C …


Spawning Induction In The Common Carp (Cyprinus Carpio) Using Different Combinations Of [D-Ser(Tbu)^6,Pro^9-Net]-Lhrha And Metoclopramide, Muhammed Arabaci, Haşmet Çağirgan, Mustafa Sari, Reyhan Gelmez Jan 2004

Spawning Induction In The Common Carp (Cyprinus Carpio) Using Different Combinations Of [D-Ser(Tbu)^6,Pro^9-Net]-Lhrha And Metoclopramide, Muhammed Arabaci, Haşmet Çağirgan, Mustafa Sari, Reyhan Gelmez

Turkish Journal of Veterinary & Animal Sciences

The effects of a single administration of [D-Ser(tBu)^6,Pro^9-NEt]-LHRHa at high dose alone (50 µg/kg), and at constant dose (20 µg/kg) combined with different doses of the dopamine receptor antagonist Metoclopramide (5, 10, 20, 40 mg/kg) for the induction of spawning in common carp broodstocks were determined under local hatchery conditions and compared with classic carp pituitary extract (CPE, double injection) application (water temperature 24 ºC). Fish injected with physiological saline (0.7% NaCl) were used as a control group. No spawning was observed in the control group or in the groups given LHRH-a combined with low (5, 10 mg/kg) doses of …


The Optimal Balance Between Growth Rate And Survival In Mammals, Eric Charnov Jan 2004

The Optimal Balance Between Growth Rate And Survival In Mammals, Eric Charnov

Biology Faculty & Staff Publications

Evolutionary theory for life-history allometry in mammals is extended to include a trade-off between body-size growth rate and adult lifespan.


In Vitro Propagation Of Some Western Australian Seagrasses, Julia Wilson Jan 2004

In Vitro Propagation Of Some Western Australian Seagrasses, Julia Wilson

Theses: Doctorates and Masters

The development of a successful protocol for micropropagating seagrass provides a valuable tool for seagrass-restoration programs and a facility to study their biology (especially their physiology). This work reports on some of the culture requirements of some seagrasses that are commonly found in Western Australia: Posidonia coriacea, P. sinuosa, P. australis and Halophila ovalis. The protocol developed for H. ovalis allows very rapid multiplication and sustainable growth of cultures while the protocol developed for Posidonia requires further development. The culture of Posidonia cariacea proved to be problematic however experimental media that provided insights into its culture conditions. The carbohydrate source …


The Use Of Proline To Determine Salt Tolerance In Eucalyptus Species And Clones, Andrew J. Woodward Jan 2004

The Use Of Proline To Determine Salt Tolerance In Eucalyptus Species And Clones, Andrew J. Woodward

Theses: Doctorates and Masters

There have been a number of studies that have examined the Eucalyptus spp. for their salt and waterlogging tolerance: but they have done so using conventional methods. A wide range of plants are known to produce greater amounts of proline when stressed, be it salt, temperature, 'drought or several other types of stress. This study looked at production of proline in salt stressed eucalypts to determine whether it can be used to differentiate between individuals andspecies. A range of Eucalyptus species and salt tolerant clones of E. camaldulensis were grown to investigate their proline response to salt stress.


An Investigation Of Dissolved Organic Matter In A Shallow Coastal Bay Subject To Aureococcus Anophagefferens Blooms, Jean-Paul Simjouw Jan 2004

An Investigation Of Dissolved Organic Matter In A Shallow Coastal Bay Subject To Aureococcus Anophagefferens Blooms, Jean-Paul Simjouw

OES Theses and Dissertations

Aureococcus anophagefferens, the pelagophyte responsible for brown tide blooms, was identified in Chincoteague Bay in 1997 and has “bloomed” there since at least 1998. Aureococcus anophagefferens is capable of using dissolved organic nitrogen (DON) and dissolved organic carbon (DOC) substrates to support growth, and this utilization is hypothesized to give the organism a competitive advantage relative to other phytoplankton when inorganic nutrient concentrations are low or depleted. Because previous studies suggest dissolved organic matter (DOM) is important in initiating and sustaining brown tide blooms, a field study of the variations in DOC concentration and DOM composition was performed at …


Construction Of The Bac Library For Biomphalaria Glabrata, Coen Adema Jan 2004

Construction Of The Bac Library For Biomphalaria Glabrata, Coen Adema

Biomphalaria Genome Initiative

No abstract provided.


Effects Of Emphysema And Chronic Hypoxemia On Skeletal Muscle Oxygen Supply And Demand, John D. Lowman Jr. Jan 2004

Effects Of Emphysema And Chronic Hypoxemia On Skeletal Muscle Oxygen Supply And Demand, John D. Lowman Jr.

Theses and Dissertations

Skeletal muscle dysfunction in chronic obstructive pulmonary disease (COPD) is a condition in which peripheral skeletal muscle undergoes myopathic changes which impair muscle function, limit physical performance, and can lead to significant disability. While the etiology of the dysfunction is unknown, this study was conducted to test the hypothesis that chronic hypoxemia leads to alterations in oxygen transport and muscle function. A primary objective was to validate elastase-induced emphysema in rats as an animal model of skeletal muscle dysfunction in COPD.Arterial blood gases were used to determine the severity of hypoxemia and sodium dodecyl sulfate- polyacrylamide gel electrophoresis was used …


Surface Characteristics Of Bacillus Spores, Darlene Danette Sabio Jan 2004

Surface Characteristics Of Bacillus Spores, Darlene Danette Sabio

Theses and Dissertations

Rapid isolation and identification of spores from various environmental samples is necessitated because anthrax spores can be used as biological weapons. The hydrophobic nature of spores may allow for their rapid concentration and partial purification from contaminating materials. In this study, spores from four taxonomic groups of Bacillaceae were isolated, purified and characterized for hydrophobicity by hexadecane partitioning, surface morphology by scanning electron microscopy, and steady-state fluorescence by spectroscopy. The morphology of spores was similar within taxonomic groups and dissimilar between groups. Spore hydrophobicity ranged from 0.3% to 65% and all spores had fluorescence emission peaks at 335 nm and …


Effects Of Training And Melodic Features On Mode Perception, Amber M. Leaver, Andrea R. Halpern Jan 2004

Effects Of Training And Melodic Features On Mode Perception, Amber M. Leaver, Andrea R. Halpern

Faculty Journal Articles

The two modes most widely used in Western music today convey opposite moods—a distinction that nonmusicians and even young children are able to make. However, the current studies provide evidence that, despite a strong link between mode and affect, mode perception is problematic. Nonmusicians found mode discrimination to be harder than discrimination of other melodic features, and they were not able to accurately classify major and minor melodies with these labels. Although nonmusicians were able to classify major and minor melodies using affective labels, they performed at chance in mode discrimination. Training, in the form of short lessons given to …


Multiple Domains Of The Co-Chaperone Hop Are Important For Hsp70 Binding, Gregory M. Nelson, Patricia E. Carrigan, Patricia J. Roberts, Jha'nae Stoffer, Daniel L. Riggs, David F. Smith Jan 2004

Multiple Domains Of The Co-Chaperone Hop Are Important For Hsp70 Binding, Gregory M. Nelson, Patricia E. Carrigan, Patricia J. Roberts, Jha'nae Stoffer, Daniel L. Riggs, David F. Smith

Faculty Publications

The Hop/Sti1 co-chaperone binds to both Hsp70 and Hsp90. Biochemical and co-crystallographic studies have suggested that the EEVD-containing C terminus of Hsp70 or Hsp90 binds specifically to one of the Hop tetratricopeptide repeat domains, TPR1 or TPR2a, respectively. Mutational analyses of Hsp70 and Hop were undertaken to better characterize interactions between the C terminus of Hsp70 and Hop domains. Surprisingly, truncation of EEVD plus as many as 34 additional amino acids from the Hsp70 C terminus did not reduce the ability of Hsp70 mutants to co-immunoprecipitate with Hop, although further truncation eliminated Hop binding. Hop point mutations targeting a carboxylate …


Características Histológicas De La Tumefacción Frontal De Melanophryniscus (Amphibia: Anura: Bufonidae), Daniel E. Naya, José A. Langone, Rafael O. De Sá Jan 2004

Características Histológicas De La Tumefacción Frontal De Melanophryniscus (Amphibia: Anura: Bufonidae), Daniel E. Naya, José A. Langone, Rafael O. De Sá

Biology Faculty Publications

Se analizó la histología tegumentaria de la región cefálica en seis especies del género Melanophryniscus, pertenecientes a los grupos stelzneri (4) y tumifrons (2), con el objetivo de esclarecer la estructura de la tumefacción frontal y su posible función. Las características generales de la histología del grupo stelzneri, coincidieron con las descripciones tegumentarias existentes para el género. Sin embargo, la región cefálica frontal en las dos especies del grupo tumifrons muestran cambios histológicos correlacionados a la tumefacción frontal. Esta estructura presenta una organización similar a otras macroglándulas presentes en la dermis de anuros (e.g., parotoides, paracnémicas), y por tanto se …


Distribución Geográfica De La Fauna De Anfibios Del Uruguay, Diego Nuñez, Raúl Maneyro, José A. Langone, Rafael O. De Sá Jan 2004

Distribución Geográfica De La Fauna De Anfibios Del Uruguay, Diego Nuñez, Raúl Maneyro, José A. Langone, Rafael O. De Sá

Biology Faculty Publications

Datos precises sobre la distribución geográfica de los organismos de una región son necesarios y prerrequisito para entender las interrelaciones ecológicas entre las comunidades biológicas. Esta información también contribuye a entender el componente histórico de la región posibilitando la determinación de centros de origen y el establecimiento de patrones de diversidad (Ron, 2000), así mismo posibilita realizar inferencias acerca de los mecanismos de especiación en los diferentes grupos zoológicos (Bridarolli & Di Tada, 1994).

La distribución geográfica de los anfibios en Uruguay ha sido parcialmente reportada (Achaval & Olmos, 1997; Langone, 1995; Maneyro et al, 1995; Maneyro & Langone, 2001). …


The Effects Of Stretching Prior To A 25-Yard Sprint In Female Swimmers, Melissa Lee Tippet Jan 2004

The Effects Of Stretching Prior To A 25-Yard Sprint In Female Swimmers, Melissa Lee Tippet

Dissertations and Theses @ UNI

While stretching is commonly part of the pre-performance routine in many sports including swimming, its function has been a controversial topic in the research community. Researchers have found decrements in performance measures such as force (Fowles, Sale, & MacDougall, 2000) and torque (Avela, Kyrolainen, & Komi, 1999) after stretching. While still controversial, some researches have also found decreases in one repetition maximum lifts (Kokkonen, Nelson, & Cornwell, 1998) and various jumping tests (Knudson, Bennett, Com, Leick, & Smith, 2001) after the inclusion of stretching.

Because there is much conflicting evidence in the literature pertaining to stretching and a lack of …