June 2013
Community composition and abundance of residential birds in selected church forests, Tigray Region, Northern Ethiopia
Birds are among the best known parts of the earth’s biodiversity. This study was conducted in three selected church forests located in different agroclimate zones (Kola, Weyna Dega and Dega) in Tigray region, Northern Ethiopia to investigate the community composition and abundance of residential birds. Data collection was carried out between November 2011 and March 2012...
June 2013
Farmers’ common bean variety and seed management in the face of drought and climate instability in southern Ethiopia
This study reports the various elements and contexts that characterize the farmers’ use and management of common bean seed and varieties in southern Ethiopia. The study used focus group discussions, contact-farmer interviews and surveys. The results demonstrate that farmers’ cropping systems and preferences vary strongly. Moreover, the high level of environmental...
June 2013
Polymorphic dominant height and site index models for Chinese fir (Cunninghamia lanceolata) plantations in Southern China
Difference methods based on six growth equations namely: Richards, Weibull, Korf, Logistic, Schumacher and Sloboda were adopted to build polymorphic dominant height and site index equations for Chinese fir plantations in Southern China. Data from stem analysis of 157 trees were used for the model construction. The performance of 15 equations including 10 kinds of difference...
June 2013
Effects of infrared irradiation on barley grain starch degradation in the rumen of sheep
This study was conducted to evaluate effects of infrared irradiation for 60, 90, 120 and 150 s on starch ruminal degradability and chemical composition of barley grain. Three ruminally fistulated rams were used to measure in sacco degradation. There was a linear increase on DM chemical...
June 2013
Role of hydrogen peroxide (H2O2) enhanced anaerobic co-digestion of petrochemical wastewater on cycle time minimization during biomethanation
The latent of per-oxidation pretreatment to petrochemical waste water (PWW) prior to anaerobic co-digestion process was explored in continuous stirred tank reactor (CSTR) continually with dairy cattle and beef cattle manure. Oxidation by hydrogen peroxide (OHP), elevated biodegradability index (BOD/COD) up to 35%. While CSTR operated with non-OHP PWW, system was found to be...
June 2013
Regulation of cytokine gene expression during Brucella abortus infection
Toll-like receptors (TLR) play a key role in antimicrobial host defense. Bacterial cell wall components and lipopolysaccharide (LPS) are recognized by macrophages via TLR, resulting in activation of professional antigen-presenting cells, initiation of acquired immune responses and further elimination of the invasive bacteria. TLR2 and TLR4 have been shown to recognize bacterial components. TLR2...
June 2013
Formulation, characterization and ex-vivo permeation studies on gentamicin-loaded transdermal patches based on PURASORB® polymers
Topical administration of gentamicin, an aminoglycoside antibiotic commonly used for treatment of bacterial infections, is limited by toxicity and membrane impermeability. The purpose of this study was to develop an alternative non-invasive, convenient and cost-effective drug delivery system for enhanced skin delivery of gentamicin. The patches were formulated...
June 2013
Effects of combinations of ethanolic extracts of Blighia sapida and Xylopia aethiopica on progesterone, estradiol and lipid profile levels in pregnant rabbits
The effects of ethanolic extracts of Xylopia aethiopica fruits and Blighia sapidaroots, used by some rural dwellers in western part of Nigeria for arbortifacient purposes, were investigated using pregnant rabbits. A combination of X. aethiopicaand B. sapida in a ratio 1:1 at concentrations of 10.0 mg/ kg body weight (group B) and 50.0 mg/ kg body...
June 2013
Predicting the microbial safety of irrigation water and fresh produce: A collaborative approach
Outbreak of food borne illnesses as a result of consumption of fresh vegetables and fruits is occurring regularly. In USA for example, it has become business as usual to hear and read about fresh produce recalls. Although, the increase has been attributed to many factors it is however more important to find solution to the problem. An effective solution will be a proactive...
June 2013
Evolution of menstruation in mammals
Why do placental mammals dismantle their endometrium in cyclic pattern? And why the amount of blood that is lost relative to the reabsorbed amount differs between species Some species as in humans shed notable amount of blood in association with menstruation that occurs by the end of the menstrual cycle, whereas, other species barely discharge any blood in what is known as...
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