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 March 2011; 6(5)

March 2011

Antimicrobial activity in the skin secretion of brown frog, Rana macrocnemis (Boulenger, 1885) collected from Turkey

In this study, antimicrobial activity of various extracts prepared from Rana macrocnemis skin secretion were tested against the microorganisms by disc diffusion method. Bacillus cereus, B. subtilis, Escherichia coli, Proteus vulgaris,Sarcina lutea, Enterobacter aerogenes, Salmonella typhimurium, Staphylococcus aureus, and Candida albicans were used as test...

Author(s): Birgül Afsar, Murat Afsar and Fatih Kalyoncu

March 2011

Performance of poverty alleviation projects in South Africa: The case of Vhembe Districtin Limpopo Province

This paper presents the findings of a review of performance of poverty alleviation projects in Vhembe District of Limpopo Province in South Africa. Data were collected from 30 stratified randomly sampled poverty alleviation projects across the district. Five project strata, namely community gardens (n = 12), poultry (n = 8), piggery (n = 2), bakery (n = 2) and other projects, including juice making, brick making, stone...

Author(s): M. Tshitangoni, A. Okorie and J. Francis

March 2011

Turkish pre-service science teachers’ knowledge and attitude towards application areas of biotechnology

Some research supposes that biotechnology knowledge is an important precursor of attitude formation. The purpose of this study was to determine Turkish pre-service science teachers’ knowledge level and attitude towards application areas of biotechnology. Two questionnaires were administered among 117 Department of Science Education students of Gazi University in Turkey. First questionnaire, which includes 10...

Author(s): Emine Selcen Darçin

March 2011

A model of adaptive neural-based fuzzy inference system (ANFIS) for prediction of friction coefficient in open channel flow

Friction coefficient factor in free surface smooth channel with rectangular cross-section is generally affected by Reynolds number and wall roughness and can be determined with laboratory or field measurements. In application, according to researchers, correct selection of friction coefficient is substantially critical to estimate hydraulic problems correctly. In this paper an ANFIS is set up in which Reynolds number,...

Author(s): Ayhan Åžamandar

March 2011

Present status of energy use in Karabuk industry (Turkey) and energy conversion potential in its steel production sector

In this paper, economic and industrial parameters of Karabuk city have been assessed, a detailed comparison of production sectors has been done and several designations have been made on energy waste in the energy-intensive steel industry. 22% of total industrial facilities in Karabuk produce steel and its derivatives, but 90% of the total energy is used by steel production industry. Steel production needs high energy...

Author(s): efik Polat, Hasan Özcan and Cüneyt Uysal

March 2011

Prevalence and severity of periodontal disease among Iraqi twin population

The aims of this study were to determine the prevalence of periodontal disease for two clinical parameters: probing pocket depth (PPD) and attachment loss (AL) among twins, and to compare between mono zygote (MZ) and dizygote (DZ) twins, in addition to the evaluation of the degree to which MZ and DZ twins are concordant for four clinical parameters. The sample consisted of 75 pairs of twins reared together, with an age...

Author(s): Fouad H. AL- Bayaty, Zainab M. AL-Fatlawi, Khalid B. Mirza and M. A. Abdulla

March 2011

Tooth mortality in khat and non khat chewer in Sana’a Yemen

Many health problems of Yemen have been associated with khat. There is a wide spread belief that periodontal disease is more severe in khat chewers than non-chewers.  The present investigation was designed to examine tooth mortality and the patterns of tooth loss in khat chewer and non- khat chewer in a selected population in Sana’a -Yemen. A total of 2506 individuals, 1216 males and 1290 females ranging in...

Author(s): Fouad H Al- Bayaty, Nidhal A. Wahid Ali , Awang M Bulgiba, Mohd Masood, Saba F Hussain and Mahmood Amin Abdulla

March 2011

Developing a fuzzy TOPSIS model in multiple attribute group decision making

Mohammad Anisseh and Rosnah bt Mohd Yusuff*

Author(s): Mohammad Anisseh and Rosnah bt Mohd Yusuff

March 2011

Intracranial pressure and cerebral perfusion pressure monitoring in the preventive nursing care of severe traumatic brain injury

The present study evaluated the roles of intracranial pressure (ICP) and cerebral perfusion pressure (CPP) in preventive nursing care of severe traumatic brain injury (STBI).Totally 100 STBI patients with 3 to 8 Glasgow Coma Score (GCS) score at admission were enrolled in this study, and they were randomly divided into monitoring group (n=50) and control group (n=50). STBI patients were nursed with...

Author(s): Ji-shu Xian, Jian-mei Liao, Hong Su, Hong-can Lai, Cui-hong Li and Li-jun Zhang

March 2011

Determination of serum levels of three phthalate esters in patients with polycystic ovary syndrome

The present study aimed to detect serum levels of three phthalate esters in polycystic ovary syndrome (PCOS) patients and explore the association between these phthalate esters and PCOS. Eighteen PCOS patients and 16 age-matched women without PCOS or laparoscopy-proven endometriosis but with infertility related to tubal defects or pelvic adhesions were recruited into the present study. Serum levels of three phthalate...

Author(s): Chengkang Xu, Huisi Lin, Yunhe Zhao and Yanyan Zhang

March 2011

Reduction of patient waiting time by simulations in Ondokuz Mayis University Medical Faculty, Department of Neurosurgery

The publications that relate to the application of simulation to healthcare sector have steadily increased over the years. Many problems such as management of inpatient bed availability, reduction of patient waiting time, determination of the number of hospital staff and optimization of surgical material distribution processes can be overcame by the use of simulations. The study aimed to increase the working time and...

Author(s): Faruk Alpaslan, Özge CaÄŸcaÄŸ and Erol EÄŸrioÄŸlu

March 2011

Comparison of maximum scour depth in Bank line and nose of submerged weirs in a sharp bend

F. Jarrahzade* and M. Shafai Bejestan

Author(s): F. Jarrahzade and M. Shafai Bejestan

March 2011

The effect of mechanical rock properties and brittleness on drillability

This paper examines the relationships between drilling rate index (DRI) and some mechanical properties of rocks in order to evaluate the effect of properties of strength, indexes, and brittleness of rock on rock drillability. For this purpose, some index properties (Shore scleroscope hardness (SSH), and point load strength (PLS) and geomechanical (uniaxial compressive strength (UCS) and Brazilian tensile strength (BTS))...

Author(s): Olgay Yarali and Eren Soyer

March 2011

Arsenic contamination of aquifers: A detailed investigation on irrigation and portability

A series of experiment on water samples at different depths of aquifer was conducted to find out the suitability for irrigation and drinking water quality in relation to arsenic contamination. All the groundwater samples in deep aquifer for irrigation were almost good in respect of electrical conductivity (EC), normal in respect of sodium adsorption ratio (SAR), satisfactory in respect to residual sodium bi-carbonate...

Author(s): S. M. Shirazi, M. A. Islam, Z. Ismail, Mohammed Jameel, U. Johnson Alengaram and A. Mahrez

March 2011

A simple method for non phenolic extraction of lipopolysaccharide from Salmonella typhimurium and Salmonella enteritidis with high purity and pyrogenicity in rat

Salmonella species are the members of Enterobacteriaceae family, these organisms are gram- negative flagellated bacillus and most of their serotype except Salmonella gallinarum and Salmonella pullorum are motile. Lipopolysaccharide in gram-negative bacteria has the complex construction and is composed of three parts including the complex part named fat A, polysaccharide, and side chain O. There...

Author(s): Akram Mirzaei, Mehdi Hedayati Hamid Reza Ahmadi Ashtiani, Mohammad Rahbar, and Hossein Rastegar

March 2011

Swelling problems and triaxial swelling behavior of claystone: A case study in Tire, Turkey

Increase in the volume of rocks containing swelling minerals like montmorillonite and anhydrite due to physico-chemical reaction with water is defined as swelling. If increase in the volume is prevented, a swelling problem which harms engineering structures occurs. In the design of these structures the data obtained from swelling tests should be used. Triaxial swelling test is important in terms of the success of the...

Author(s): Mehmet Erdinc Bilir

March 2011

Comparative study of hyperbaric oxygen therapy and conventional drug treatment on spinal cord injury at different therapeutic windows

In the present study, the curative effects of hyperbaric oxygen therapy and conventional drug treatment on spinal cord injury at different therapeutic windowswere observed and compared. A total of 328 cases of spinal cord injury (SCI) were randomly divided into hyperbaric oxygen (HBO) group and medicine group. The conventional drug treatment in the medicine group consisted of mannitol, ganglion monoglyceride,...

Author(s): Huai Huang, Hui-qiang Chen, Jing Gu and Rong-hao Yu

March 2011

“Identification of nursing care methods intended for reducing stress caused by environmental factors in neonates”

The study is designed to define the practices of nurses in an attempt to reduce the stress in neonates caused by environmental factors.100 nurses working in neonatal intensive care units of four hospitals in Istanbul are within the scope of the study.  All hospitals are connected  to Turkish Ministry of Health and  three of them are training and research hospitals.It is determined that 47% of the nurses...

Author(s): Meltem Kürtüncü Tanir, Latife UtaÅŸ Akhan and Åžule Ergöl

March 2011

Effects of montelukast on mRNA expression of MUC2 and MUC5B in human nasal epithelial cells

In this study, the effects of leukotriene receptor antagonist on mRNA expression of MUC2 and MUC5B in human nasal epithelial cells were investigated. Human nasal epithelial cells were randomly assigned into 4 groups: control group, IL-1β group, montelukast + IL-1β group and montelukast group. After 24 h of treatment, the mRNA expressions of MUC2 and MUC5B were determined by fluorescent quantitation PCR. The...

Author(s): Xuekun Huang, Yuan Li, Hong Liu, Xian Liu, Gehua Zhang and Weijie Xu

March 2011

Post-buckling analysis of a simply supported beam under uniform thermal loading

This paper focuses on post-buckling analysis of a simply supported beam subjected to a uniform thermal loading. The material of the beam was assumed as isotropic and hyper elastic. Both ends of the beam were supported by pins (pinned-pinned beam). In this study, finite element model of the beam was constructed by using total Lagrangian finite element model of two dimensional continuums for an eight-node quadratic...

Author(s): Åžeref DoÄŸuÅŸcan AkbaÅŸ and Turgut Kocatürk