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All published articles 118185

On Which Variable(s) Should We Condition to Remove Confounding Bias?

Eyal Shahar & Doron J. Shahar · Journal of Advances in Medicine and Medical Research · 2015

Using causal diagrams and an axiomatization of causality, we examined the well-known claim that conditioning on confounders (“adjustment” for confounders) is sufficient to remove confounding bias. We show that this advice is poorly stated and is incomplete. To remove confounding...

Open access Research Article 10.9734/BJMMR/2015/19751

Mechanism of Iodate Oxidation by Methylthioninum Chloride in Acidic Medium

Umoru Patricia Ese & O. A. Babatunde · Chemical Science International Journal · 2015

The mechanism of iodate oxidation by methylthioninum chloride in acidic medium was investigated at 29±1ºC. The oxidation reaction is first order in both oxidant and reductant. The rate of reaction was unaffected by increase in ionic strength, dielectric constant, added cations an...

Open access Research Article 10.9734/ACSJ/2015/17482

Nanocellulose Crystals from Coir Fibre for Template Application

E. U. Ikhuoria, S. O. Omorogbe, O. G. Agbonlahor & R. A. Etiuma · Chemical Science International Journal · 2015

Undried coir cellulose was prepared by chlorite bleaching method and hydrolyzed by 50% sulphuric acid to obtain highly crystalline nanocellulose. The proximate analysis of the coir fibre such as; moisture, ash, crude fibre, protein and its mineral composition were investigated us...

Open access Research Article 10.9734/ACSJ/2015/18766

Trend and Change Analysis of Monthly and Seasonal Temperature Series over North-Eastern Nigeria

M. N. Dammo, B. S. U. Ibn Abubakar & A. Y. Sangodoyin · Journal of Geography, Environment and Earth Science International · 2015

Temperature is one of the indicative factors of climate change which is one of the very important issues discussed in the recent two decades. The present research aimed at studying temporal and seasonal variation in temperature over North-eastern Nigeria, during the period 1981–2...

Open access Research Article 10.9734/JGEESI/2015/18512

Identification of Groundwater Quality Zones in Tindivanam Taluk, Tamilnadu with the Integrated Approach of Remote Sensing and GIS

A. Karthikeyan & G. R. Senthilkumar · Journal of Geography, Environment and Earth Science International · 2015

Groundwater quality prospective zones of Tindivanam Taluk, Tamil Nadu were investigated and delineated by an integrated approach of remote sensing and geographical information system (gis). Various thematic maps like geology, geomorphology, lineament, drainage, land use/land cove...

Open access Research Article 10.9734/JGEESI/2015/18994

Impacts of Industrialization on Fish Species Composition and Diversity in Warri River, Niger Delta, Nigeria

Ogaga Augustine Aghoghovwia, Olusegun Ayodele Oyelese & Elijah Ige Ohimain · Journal of Geography, Environment and Earth Science International · 2015

Changes in water quality caused by industrialization and technological advancement, affect fishery resources. The Warri River like many other water bodies in the Niger Delta are experiencing side effects in terms of pollutant build up and destruction of fishes resources. Samples...

Open access Research Article 10.9734/JGEESI/2015/18636

Free Assets and Their Relations with Riskless Assets

Reza Keykhaei & Mohammad Taghi Jahandideh · Journal of Advances in Mathematics and Computer Science · 2015

Tobin's one-fund theorem states that, when a portfolio is consisting of some risky assets and a riskless asset (with return rc), then every ecient portfolio in the Mean-Variance optimization is a combination of the tangency portfolio and the riskless asset. We introduce the notio...

Open access Research Article 10.9734/BJMCS/2015/19469

Isolation and Characterization of Cellulase Producing Bacteria from the Gut of Termites (Odontotermes and Heterotermes Species)

C. P. Sreena, N. K. Resna & Denoj Sebastian · Biotechnology Journal International · 2015

Aim: To identify, characterize and compare the cellulolytic potentials of strains isolated from the gut of Odontotermes and Heterotermes species. Methodology: Termites were collected, identified, surface sterilized and used as source of cellulase producers. Enrichment of cellulos...

Open access Research Article 10.9734/BBJ/2015/20001

The Effects of Raffia Palm Mesocarp on Haematological Parameters of Clarias gariepinus, a Common Niger Delta Wetland Fish

Elijah Ige Ohimain, Iniobong Reuben Inyang & George Umashi Osai · Annual Research & Review in Biology · 2015

Indigenous people of the Niger Delta region in Nigeria depend on fisheries as the main protein source. The mesocarp of raffia palm is used by the indigenous people to stupefy and catch fishes. The mechanism of action of the raffia palm mesocarp is not well understood. Hence, this...

Open access Research Article 10.9734/ARRB/2015/19065

Investigation of the H3PO4-Promoted Reaction of Benzaldehydes, Ethyl Acetoacetate or Ethyl Cyanoacetate or Malononitrile in the Presence of Urea as a Route to Pyrimidin-2-ones and 2-Iminochromenes

Ishmael B. Masesane, Ngonye Keroletswe & Runner R. Majinda · International Research Journal of Pure and Applied Chemistry · 2015

The H3PO4-promoted reactions of benzaldehydes, active methylene compounds and urea are reported. Benzaldehydes, ethyl acetoacetate and urea react in the presence of H3PO4 to give substituted pyrimidin-2-ones in 49-84% yields. The three-component reaction failed when either ethyl...

Open access Research Article 10.9734/IRJPAC/2015/20189

Evaluating the Use of an Ointment Based on Prosopis juliflora Leaves in the Topical Therapy of Wounds

Ana Carla Ferreira Costa & Giani Maria Cavalcante · Advances in Research · 2015

Wound healing is characterized by how a dynamic physiological process must maintain the integrity of the lesion. This study aimed to evaluate morphometrically and histologically, through in vivo assays, the healing of skin wounds with topical use of an ointment formulated by a po...

Open access Research Article 10.9734/AIR/2015/17440

Daily Collector Systems and the Financing of Small Scale Rural Agribusiness in Delta State, Nigeria

Achoja Felix Odemero, Emaziye Peter Otunoruke & Okeke Daniel Chukwujioke · Current Journal of Applied Science and Technology · 2015

The effectiveness of indigenous daily collector system in terms of security and growth of savings of smallholder agribusiness entrepreneurs has attracted the brilliant minds of Economists. This study investigates the effectiveness of Indigenous Daily Deposit collector system in s...

Open access Research Article 10.9734/BJAST/2015/16878