Scientific Research and Essays

  • Abbreviation: Sci. Res. Essays
  • Language: English
  • ISSN: 1992-2248
  • DOI: 10.5897/SRE
  • Start Year: 2006
  • Published Articles: 2768

Table of Content: 4 February; 6(3)

February 2011

A review on bricks and stabilized compressed earth blocks

This paper is a review of the state of uses of clay bricks and stabilized compressed earth blocks. We offer an overview of the world general building using clay bricks or stabilized compressed earth blocks compiled from various research organizations, modern projects which have been carried out and reports from existing manufacturing of clay bricks or stabilized compressed earth blocks. Although, stabilized compressed...

Author(s): Sadek Deboucha and Roslan Hashim

February 2011

Morphological intraspecific variabilities in African yam bean (AYB) (Sphenostylis stenocarpa Ex. A. Rich) Harms

Intraspecific variabilities in 25 IITA accessions of African yam bean (AYB) (Sphenostylis stenocarpa Ex. A. Rich.) Harms were assessed through characterization of 36 morphological characters. The intraspecific variabilities among the accessions were evaluated by the following statistical analysis tools: Analysis of Variance (ANOVA), principal component and cluster analysis (Semi – partial R-squared...

Author(s): Popoola, J. O, A. E Adegbite, O. O. Obembe, B. D. Adewale and B. O. Odu

February 2011

The use of Pterocarpus santalinoides in rubber compounding

Pterocarpus santalinoide is a renewable agricultural resource that is not widely used but readily available. The seed was grinded, sieved, carbonised and mixed with various ratio of carbon black as part of recipe for compounding blends of natural rubber (NR) and depolymerised natural rubber (DNR). The carbonized P. santalinoide seed shell (CPSS) and uncarbonized P. santalinoide seed shell...

Author(s): Akinlabi, A. K., Olayinka, O. M. and Dare, E. O.

February 2011

Assessment of management transfer of Kahramanmaras irrigation system

In this study, the program of management transfer of the Kahramanmaras Irrigation Scheme was evaluated. The result of effects on water use and agricultural effectiveness were determined using appropriate performance indicators and the opinions of farmers. According to the results, the transfer process was not profitable for farmers; on the other hand, governmental expenditures were decreased. Farmers had insufficient...

Author(s): Cagatay Tanriverdi and Hasan Degirmenci

February 2011

Can Sudan achieve food security during the next decade?: some forecasts of self-sufficiency in cereals

  This paper gives some insights about the problem of food security in Sudan and provides forecasts for the levels of production and consumption of the main cereals, namely sorghum, wheat and millet. Descriptive statistics and regression analysis were used as tools of analysis. Assuming exponential growth of production and consumption of cereals over time we provided forecasts for the levels of production,...

Author(s): Nagat Ahmed Mustafa Elmulthum, Mohamed Elsir Ahmed Awaad and Abbas Elsir Mohamed Elamin

February 2011

Analysis of relationship indicators used to evaluate critical events in Bushehr nuclear power plant using DEMATEL method

Bushehr nuclear power plant like other nuclear power plants in the world is influenced by various events. These events have internal or external origin. Each of these events in terms of occurrence can release considerable radioactive contaminants amounts that cause regional or global crisis. Internal and external events have common indicators, but what is important is relation between these indicators and its...

Author(s): Nasser Moharamnejad, Abbas Toloie Eshlaghi, Faramarz Moattar and Hashem Setareh

February 2011

Microstructural characterisation of β-SiC powders synthesised by carbothermally

In this study, as-received diatomite from Turkish origin was used as a silica (SiO2) precursor in the synthesis of silicon carbide (SiC) powders. Carbon black, used as reducing agent, was mixed with grinded diotomite with constant C/SiO2 molar ratio of 4. Mixed powders were subjected to carbothermal-reduction reaction (CRR) process at temperatures of 1450, 1500 and 1550°C for 1 h. The CRR processes were conducted in...

Author(s): Cengiz BaÄŸci

February 2011

Anti-synchronization of complex delayed dynamical networks through feedback control

To reveal the dynamical mechanism of anti-synchronization in complex networks with time delays, a general complex dynamical network with delayed nodes is introduced. Based on the Lyapunov stability theory, this paper presents the feedback controllers for anti-synchronization of complex delayed dynamical networks. Several sufficient conditions are drawn for the stability of the error dynamics and the design of the...

Author(s): Xiao Jian

February 2011

A fuzzy MCDM model of service performance for container ports

To achieve the aim of management control function and monitor the service systems at container ports, it is essential to study the evaluation of service performance. The main purpose of this paper is to develop a fuzzy MCDM algorithm (multiple criteria decision-making model) to evaluate the service performance for container ports. Firstly, some concepts and methods used to develop a fuzzy MCDM algorithm are briefly...

Author(s): Ji-Feng Ding and Chien-Chang Chou

February 2011

Identification of new fungi isolated from Echinochloa spp., as potential biological control agents in paddy fields in Iran

Echinochloa spp. are the most important weeds of rice. Fungal pathogens can be exploited as biological agents for the management of agricultural weeds. Two pathogenic fungal species were isolated from naturally infected Echinochloaspecies and identified. In order to isolate the fungus from disease tissues, the obtained samples were cultured on potato dextrose agar medium. Isolates were cultured due to...

Author(s): Mohammad Reza Safari Motlagh

February 2011

A contribution to the knowledge of Blacinae (Hymenoptera: Braconidae) from Turkey

Present study was conducted in the Middle Anatolian Region and Erzurum Province in Turkey during 2006 to 2007. Totally, 12 species in two subgenera belonging to subfamilies Blacinae, (Hymenoptera: Braconidae) were determined. Of which, three species (Blacus (Blacus) bovistae (Haeselbarth, 1973), B. (B.)humilis (Nees, 1811) and B. (B.) paganus (Haliday, 1835) were...

Author(s): Coskun Guclu

February 2011

Applying six sigma to manufacturing processes in the food industry to reduce quality cost

In recent years, an increasing number of companies have used different types of quality programs in order to increase internal and external customer satisfaction as well as to reduce quality cost. Among all of these programs, Six Sigma is perhaps the most widely-accepted initiative by all a broad range of organizations. The DMAIC (define-measure-analyze-improve-control) approach has been followed here to solve an...

Author(s): Hsiang-Chin Hung and Ming-Hsien Sung

February 2011

Mineralogical and petrographical characteristics of the Aladag skarn deposit (Ezine/Canakkale-West Turkey)

The study area located 35 km south of the Çanakkale city center and 8 km southwest of Ezine County (Çanakkale-Turkey) and covers about 80 km2. The main settlements in the study area are AladaÄŸ, Kemalli, Üsküfçü, Koçali and Gokcebayir villages. Pre(?) Cambrian to Holocene aged magmatic, metamorphic and sedimentary rocks crop out in the study area. The basement of the study area...

Author(s): Fetullah Arık and Umit Aydin

February 2011

Increased permeability of blood-brain barrier caused by inflammatory mediators is involved in high altitude cerebral edema

Studies have shown that inflammatory mediators can result in increased permeability of blood-brain barrier (BBB) and even cerebral edema, but there is no report on whether high altitude hypoxia exposure can increase the permeability of BBB. In this study, the levels of inflammatory mediators, including tumor necrosis factor-alpha (TNF-α) endothelin (ET), nitric oxide (NO) superoxide dismutase (SOD), glutathione...

Author(s): Qiquan Zhou, Xiaoling Tan, Jing Wang, Bo Zhou and Ping Guo,

February 2011

A method for lateral static and dynamic analyses of wall-frame buildings using one dimensional finite element

This study presents an approximate method which is based on the continuum approach and one dimensional finite element method to be used for lateral static and dynamic analyses of wall-frame buildings. In this method, the whole structure is idealized as an equivalent sandwich beam which includes all deformations. The effect of shear deformations of walls is considered and incorporated in the formulation of the governing...

Author(s): Kanat Burak Bozdogan

February 2011

Cephalometric evaluation for Malaysian Malay by Steiner analysis

Many researchers tried to define and put cephalometric norms for different ethnics groups. However, these studies may be specific to an ethnic group and cannot always be applied to other ethnic types. The aim of this study is to obtain  cephalometric norms for Malaysian Malay by Steiner analysis and compare with Caucasian norms. The method involved clinical examination, collection and analysis of 60 lateral...

Author(s): Mohammad H. A., Abu Hassan, M. I. and Hussain S. F.

February 2011

Comparison of cycloplegic retinoscopy using cyclopentolate or tropicamide eye drops in an epidemiologic study of pediatric refraction among 1907 school-aged children

Compound tropicamide eye drop (0.5% tropicamide + sodium hyaluronate) and 1% cyclopentolate eye drop were compared in an epidemiologic study of pediatric refraction in school-aged children. A total of 1907 school-aged children were divided into three age groups: 6 to 8, 9 to 12, and 13 to 15 years old. Compound tropicamide eye drop and 1% cyclopentolate eye drop were used in the same individual before conducting...

Author(s): Lian-Hong Pi, Jia-Liang Zhao, Qin Liu, Lin Chen, Jing Fang, Ning Ke, Yan Xiong, Hui Shi, Ge-Fang Li, Zhi-Hua Chen and Zheng-Qin Yin

February 2011

A research on Karamursel region volcanic tuff as a pozzolanic additive in repair mortars used for historical buildings

In this research, the chemical properties and pozzolanic activity of Karamursel-Kaytazdere volcanic tuffs were studied. The main aim of this study is to reproduce traditional lime based mortars with local materials for the restoration of historical buildings. With this goal in mind, first of all pozzolana which can be used in repair mortar was researched and then mortars that have similar properties with original mortar...

Author(s): Mustafa Ozgunler and Seden Acun Ozgunler

February 2011

Musculoskeletal pain, associated risk factors and coping strategies in school teachers

Age, sex and working with improper position, physically and psychologically strenuous work increase risk of musculoskeletal pain (MSP) in some professions. The aim of this study was to determine prevalence of MSP and its characteristics among school teachers. Nine hundred teachers were evaluated. Pain characteristics, pain intensity, related factors, and activity limitation of the teachers with MSP were questioned....

Author(s): Nilufer Cetisli Korkmaz, UÄŸur Cavlak and Emine Aslan Telci

February 2011

Inoculation effects of recombinant yeast hepatitis B vaccine used in neonates

This study aimed to find out the immune response effects and side effects after recombinant yeast hepatitis B vaccine inoculation in neonates. All 203 neonates were divided into three groups: 25 subjects in group A whose mother was HBsAg(+) HBeAg(+), 43 subjects in group B whose mother was HBsAg(+) HBeAg(-) and 135 subjects in group C whose mother was HBsAg(-). The immune response effects at 12th month after first...

Author(s): Liang Peng, Jing Liu, Zhi-liang Gao, Zhi-xin Zhao and Chao-shuang Lin

February 2011

The effect of different humic acid fertilization on yield and yield components performances of common millet (Panicum miliaceum L.)

Organic matter is a fundamental in soil, but dynamic component of soils that influences the many chemical, physical and biological properties that regulate soil productivity. Objective of using humic substances in plant is to balance vegetative and reproductive growth as well as to improve herbage and protein yield. This study has been carried out at the experimental area of the Field Crops Department of Dicle...

Author(s): Veysel Saruhan Alpaslan KuÅŸvuran and Sevgi Babat