Scientific Research and Essays

  • Abbreviation: Sci. Res. Essays
  • Language: English
  • ISSN: 1992-2248
  • DOI: 10.5897/SRE
  • Start Year: 2006
  • Published Articles: 2755

Table of Content: 11 Jun; 8(22)

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...

Author(s):   Hailemariam Areaya, Meheretu Yonas and Tsegazeabe Hadush Haileselasie

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...

Author(s):   Asrat Asfaw,, Conny J. M. Almekinders, Paul C. Struik and Matthew W. Blair

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...

Author(s):   Ai-Guo Duan, Jian-Guo Zhang, Shu-Zhen Tong and Cai-Yun He

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...

Author(s):   Amir Fattah, Ali Asghar Sadeghi, Ali Nikkhah and Mohammad Chamani

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...

Author(s):     Md. Nurul Islam Siddique, Mimi Sakinah Abd. Munaim and A. W. Zularisam

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...

Author(s):     Cervantes-Flores Maribel, Martínez-Romero Aurora, Ramírez-Valles Eda Guadalupe, Saucedo Mendiola-Leticia, Moreno-Lafont Martha C., López-Santiago Rubén, Estrada-García Iris and Mojica-Marín Virgilio

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...

Author(s):   Petra Obioma Nnamani, Franklin Chimaobi Kenechukwu, Esther Uju Dibua, Celestine Chidi Ogbonna, , Mumuni Abdul Momoh, Augustina Uche Olisemeka, Agubata Chukwuma Obumneme and Anthony Amaechi Attama

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...

Author(s):   Odesanmi OS, Ayepola Olayemi, Omotosho OE, Ogunlana OO, Frank Onwuka and Nwankpa Promise

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...

Author(s):   Rabi Ibrahim Rabady