Scientific Research and Essays

  • Abbreviation: Sci. Res. Essays
  • Language: English
  • ISSN: 1992-2248
  • DOI: 10.5897/SRE
  • Start Year: 2006
  • Published Articles: 2753

Table of Content: November; 4(11)

November 2009

Design of composite racing car body for student based competition

In this paper, total design method is used to develop a systematic route to design a car body fabricated by Faculty Engineering, University Putra Malaysia for competition and research purpose. A design of car body is implemented in this paper as a case study to enhance students understanding on developing a creative design. The design was carried out to meet the rules and regulation of “Formula Varsity UTeM...

Author(s): S. M. Sapuan, K. W. Ham, K. M. Ng, C. K. Woo, M. K. A. Ariffin, B. T. H. T. Baharudin, A. A. Faieza, E. E. Supeni and N. A. A. Jalil

November 2009

Visualization of forest fires interactively on the internet

  The Internet has rapidly changed the transfer and dissemination of geographical information. The rapid and enormous development of the Internet technology has resulted in usage of the Internet as a tool for data access, data transmission and access to GIS analysis tools. The combination of Geographic Information System (GIS) and the Internet offers great possibilities, such as interactive access to...

Author(s): Mustafa Umit Gumusay and Kemal Sahin

November 2009

Hydrogels as potential drug delivery systems

  Hydrogels, the swellable polymeric materials, have been widely investigated as the carrier for drug delivery systems. These biomaterials have gained attention owing to their peculiar characteristics like swelling in aqueous medium, pH and temperature sensitivity or sensitivity towards other stimuli. Hydrogels being biocompatible materials have been recognized to function as drug protectors, especially for...

Author(s): Saima Amin, Saeid Rajabnezhad and Kanchan Kohli

November 2009

Study of the influence of venturi weir type on air bubble entrainment

  Aeration is a natural or mechanical process of increasing the contact between water and air for the purpose of releasing entrained gases, adding oxygen, and improving the chemical and physical characteristics of water. Hydraulic structures can be accepted as the key components in improving aeration efficiency because of the strong turbulent mixing associated with substantial air bubble entrainment at these...

Author(s): Fahri Ozkan, Turgut Kaya and Ahmet Baylar

November 2009

Identification of weed/corn using BP network based on wavelet features and fractal dimension

  The aim of this study was to investigate weed/corn Back-propagation (BP) network discrimination method based on wavelet feature parameters and fractal dimension of young weed/corn image. In-filed images were taken under natural sunlight and various backgrounds, and five common weed species located corns fields were considered in this research. The obtained images were converted into gray level images on a...

Author(s): Lanlan Wu, Youxian Wen, Xiaoyan Deng and Hui Peng,

November 2009

A mechanochemical reaction for highly efficient preparation of 1, 1´-bi-2-naphthol from 2-naphthol

  In this paper, different mechanochemical methods for production of 1, 1´-Bi-2-naphthol from oxidative coupling 2-naphthol in presence of FeCl3 were compared. The first were designed and a vibration mill as a new device for this reaction was manufactured. Our results were compared to the works of Toda et al. (1989) and Rasmussen et al. (1997) who reported other mechanochemical systems. It was found...

Author(s): Keivan Shayesteh, Jafarsadegh Moghaddas, Mohammad Haghighi and Gholamhasan Imanzadeh

November 2009

Evaluation of noise pollution caused by vehicles in the city of Tokat, Turkey

  Noise pollution and its influence on environment and life quality of human beings may be considered as a hot topic in scientific research. Since there are no sufficient studies on noise pollution in Turkey, this study was carried out to determine motorway noise levels in Tokat city centre, located at the northern part of Turkey. Noise measurements were taken in the evening to determine noise pollution all...

Author(s): Serkan Ozer , Hasan Yilmaz, Murat YeÅŸil and Pervin YeÅŸil

November 2009

Influence of rock mass properties on blasting efficiency

  The purpose of this paper is to determine the influence of rock mass properties on the blasting efficiency which is ratio of the block size distribution of the rock mass to the block size distribution of the muck-pile. The proposed methodology of blasting efficiency in this study is to compare physical and mechanical properties of the rock mass and block fragmentation under the same blasting conditions in...

Author(s): A. M. Kılıç , E. YaÅŸar, Y. ErdoÄŸan and P. G. Ranjith

November 2009

An assessment of producer’s approach to agricultural pesticide usage in potato production: A case study in Erzurum, Turkey

  The aim of this study is to determine farmers’ tendency towards pesticide usage, its relationship with environment and the quantity and value of pesticide usage in potato production in Pasinler district of Erzurum Province in Turkey. Erzurum, particularly Pasinler district, has an important place in potato production. 95 potato producing farms in 9 villages were selected to represent the farms in the...

Author(s): Avni Birinci and Ahmet Semih Uzundumlu

November 2009

Turkish preservice mathematics teachers’ mathematical values: Positivist and constructivist values

The present study aimed to investigate preservice mathematics teachers' values toward their mathematics teaching with regard to their grade level, gender and departments. In the study, the positivist and constructivist values were used as value variables. Data were collected from 231 preservice primary and secondary mathematics teachers using a Likert-type questionnaire. Descriptive statistics were used to...

Author(s): Yüksel Dede

November 2009

Factors affecting dairy farmers' utilization of agricultural supports in Erzurum, Turkes

  Due to the nature and strategic importance of agriculture, governments in whole world somehow support agricultural sector. This sector plays an important role in Turkish economy despite the share of industry and services are rising constantly. The sector has basic structural problems such as poor mechanization, small farm size and uncoordinated and unplanned agricultural production. Although Turkey has...

Author(s): H. Bayram Işık

November 2009

Solid wood flooring and multilayered parquet industries in Turkey

  Status problems and solution proposals of Turkish solid wood flooring and multilayered parquet industries between 2002 - 2006 was analyzed due to necessity for investigating developments after 2002 in this study. As the result of solid wood flooring inquiry study, most frequently used native and exotic species in production were determined as oak, beech, red pine, sapele, iroko respectively. Dry kilns were...

Author(s): Nur Muge Gungor, Ahmet Kurtoglu and Süleyman Korkut

November 2009

A research on the accuracy of landform volumes determined using different interpolation methods

  Mathematical formulation of unsmooth surfaces such as the physical earth poses several difficulties. To achieve an accurate formulation, each and every point of the surface must be defined, which is practically impossible. Therefore, in modelling such surfaces there is a need for an adequate number and distribution of reference points as well as an appropriate interpolation method. Working on...

Author(s): Ibrahim Yilmaz

November 2009

The role of science and technology education at network age population for sustainable development of Bangladesh through human resource advancement

  Education is supposed to play a vital role for the development of a nation. Many countries made progression through education. Nevertheless, some of them also failed to retain the development achieved since these countries failed to supply required skilled workforce for emerging economics caused by globalization and rapid change of economic pattern. This now forces policymakers to prioritize the production of...

Author(s): Gazi Mahabubul Alam

November 2009

Appraisal of menstrual awareness and pattern among female secondary school students in Lagos

Attention has been drawn to attitude to menstruation which vary from culture to culture, symptoms and management of menstruation. The aims of this study were to investigate the menstrual awareness of female secondary school students and correlations between such factors as menarcheal age, frequency of menstruation, presence of pain during period (Dysmenorrhoea), degree of incapacitations due to pain and other factors. A...

Author(s): O. Tayo Adetokunbo, I. Akinola Oluwarotimi, A. J. Shittu Lukeman and B. O. Osinusi

November 2009

Cost of quality management: An empirical study from Turkish marble industry

  In this study, a quality cost model to measure and control costs of quality (COQ) occurring in marble plants was developed. In the marble industry, most properties associated with quality depend on uncontrolled and mostly immeasurable natural and geological conditions. And because of these nature-related problems, it is difficult to apply commonly used quality cost models to the marble industry and there has...

Author(s): Ozgur Akkoyun and Huseyin Ankara

November 2009

Accessibility effect on urban land values

There has always been a demand for real estate with the aim of accommodation and/or making investments. The real estate is also vital for a country’s economy as urban land value is determinative in both Urban planning and real estate activities in economies of today’s world. Knowing the factors affecting the land values is an important advantage in identifying the future of Urban development and anticipating...

Author(s): Mehmet Topçu

November 2009

FPGA based digital electronics education and a simulator core design for a/d communication

  In this study we present a Field Programmable Gate Array (FPGA) core (mega-function) design prepared to simulate the communication between an Analog to Digital Converter (ADC) and FPGA which were both located on an education board. The simulator core imitates ADS7824 coded ADC Integrated Circuit (IC). It is tested that the simulator core helps students to understand ADC theory better and make more practical...

Author(s): Vedat Kiray and Azamat Jambulov

November 2009

Recurrence relations for the moments of order statistics from uniform distribution

  In this paper, certain recurrence relations for the single and product moments of the order statistics of a random sample of size n arising from uniform distribution are derived. The usefulness of these relations in evaluating the single and product moments of uniform order statistics is also discussed.   Key words: Order statistics, single and product moments, recurrence...

Author(s): Muhammet Bekçi

November 2009

Non-PCR-based amplification technique combined to DNA array hybridization to detect complex SNPs involved in antibiotic resistance

  We have investigated the feasibility of an approach that combines a non-PCR-based amplification of the target DNA to a microarray-based detection of the single nucleotide polymorphisms (SNPs) in genes associated with bacterial resistance to beta-lactams. The method involves a random non-PCR amplification by the exo-Klenow, followed by hybridization on a low-density DNA chip. This approach was demonstrated to...

Author(s):   Laurence Drieux, Vincent Jarlier , and Wladimir Sougakoff ,  

November 2009

Cytotoxicity testing of aqueous extract of bitter leaf (Vernonia amygdalina Del.) using the Allium cepa chromosome aberration assay

  Mitotic studies were carried out on Allium cepa (onion) root cells treated with different concentrations of aqueous leaf extract of Vernonia amygdalina (bitter leaf). The onion root cells showed reduced mitotic indices with corresponding increase in concentration of the bitter leaf extract [200 g/L (C2), 400 g/L (C3) and 500 g/L (C4)]. Chromosomal aberrations, such as endopolyploidization,...

Author(s): A. E. Adegbite and E. B. Sanyaolu

November 2009

Mutagenic effect of neem leaf extract used in traditional medicine on Allium cepa (L.)

  Allium test carried out on different concentrations of raw Azadirachta indica (neem) leaf extract revealed induction of chromosomal aberrations in the genome of Allium cepa. Chromosomal aberrations such as scattering of chromosomes at anaphase, anaphase bridge, chromosome fragmentation, laggards and endopolyploidization were observed in onion roots treated with 0.1, 0.2, 0.4 and 0.5...

Author(s): A. E. Adegbite, M. S. Ayodele, K. R. Odunbaku and E. O. Idehen

November 2009

AMMI and SREG GGE biplot analysis for matching varieties onto soybean production environments in Ethiopia

  Matching soybean variety selection with its production environment is often challenged by the occurrence of significant genotype-by-environment interactions (GEI) in the variety development process. Several statistical models have been proposed for increasing the chance of exploiting positive GEI and supporting breeding program decisions in variety selection and recommendation for target set of environments....

Author(s): Asrat Asfaw, Fistum Alemayehu, Fekadu Gurum and Mulugeta Atnaf

November 2009

Metabolic detoxification as a viable mechanism for triazine herbicide resistance in ametryn resistant biotype of the fresh water chlorophyte, Scenedesmus vacuolatus

  The quantitative determination of ametryn, atrazine and prometryn as well as their metabolites in the culture medium of herbicide-treated Scenedesmus vacuolatuswas undertaken using high-performance liquid chromatography (HPLC). Resistant biotype metabolized about 60% of biologically active herbicides tested into two metabolites for ametryn and three metabolites for atrazine and prometryn. ...

Author(s): Sanaa A. Ibrahim, Mohamed M.Tantawy, Zakaria M. Seleim, Hafez T. A. Al-Marsafy and Ahmed M. A. Hassanein

November 2009

EDXRF elemental assay of airborne particulates: A case study of an iron and steel smelting industry, Lagos, Nigeria

  The unregulated activities of a scrap iron and steel smelting industry in Lagos, Nigeria necessitated the sampling of particulate matter (PM10 and PM2.5) particles from various sections of the industry. The samples were analyzed using polarized energy dispersive x-ray fluorescence (EDXRF) technique which allowed the simultaneous detection of over 25 elements in each of the samples. The mass concentration...

Author(s): O. K. Owoade, F. S. Olise, I. B. Obioh, H. B. Olaniyi, L. Ferrero and E. Bolzacchini

November 2009

Carbon dioxide production by Leuconostoc mesenteroîdes grown in single and mixed culture with Lactococcus lactis in skim milk

  The effect of mixed culture of Leuconostoc mesenteroîdes subsp. dextranicum and Lactococcus lactis subsp. lactis (prot+) was investigated to achieve an optimal production of carbon dioxide. Only the strain of L. mesenteroîdes can produce carbon dioxide from lactose and citrate in milk. The influence of the initial concentration ration between the two strains...

Author(s): M. Kihal, H. Prevost, D. E. Henni, Z. Benmechernene and C. Diviès

November 2009

Survey of drug storage practice in homes, hospitals and patent medicine stores in Nsukka, Nigeria

  The numbers of illegal and unauthorized outlets operated by charlatans, that market drugs in Nigeria, are too many compared to pharmacies and hospitals. The trend is that a great number of drug users depends on these drug sellers for the procurement of their drugs....

Author(s): Obitte, N.C., Chukwu, A., Odimegwu, D.C. and Nwoke, V.C.

November 2009

Can governance resolve environmental conflicts? A Maputaland case study

  Historically, there have been environmental conflicts between conservation authorities and local communities. The declaration of nature reserves often resulted in forced removals and negative perceptions of conservation. The new municipal governance system of South Africa is intended to overcome political problems of the apartheid era. But can it resolve environmental conflict? Examples of environmental...

Author(s): Mark Jury, Sylvain Guyot and Amos Mthembu

November 2009

Environmental services and development in an African port city

  Environmental services may be guided in the process of urbanization through the actions of local stakeholders. In the evolving cultures of Africa, there are contrasts driven by past colonisation and recent democratization. Stakeholders’ attitudes towards the environment are molded by the problem of pollution in the port city studied, and the industries’ positive effects on the local economy....

Author(s): Mark Jury and Sylvain Guyot

November 2009

Sero-prevalence of human immunodeficiency virus (HIV) 1 and 2 infections in Uyo metropolis, Akwa Ibom State

  The seroprevalence of human immunodeficiency virus (HIV), the causative agents of Acquired Immune Deficiency Syndromes (AIDS), was investigated from January 2008 to June 2008. Three hundred and sixteen (316) blood samples were screened presumptively for presence of HIV-1 and HIV-2 using a third generation ELISA kit called “Determine”. Out of the 316 samples screened, immunoglobulin M (IgM)...

Author(s): Akinjogunla, O. J. and Adegoke, A. A.

November 2009

The effects of petroleum dependency on agricultural trade in Nigeria: An error correlation modeling (ECM) approach

  Agricultural and petroleum sectors are both of great importance to the Nigerian economy in terms of their contribution to Gross Domestic Product (GDP) and value of their exports. Dependence of Nigeria on the oil sector has been found to adversely affect both the agricultural sector and the economy. This study covered the periods between 1970 and 2003. It sought to know the effects and extent of petroleum...

Author(s): Sekumade, A. B.

November 2009

Analytical study of effect of disorder on dispersion in steady inertial flows in porous effect

  In this paper, we consider a total dispersion tensor in two-dimensional packed beds consisting of randomly placed parallel cylinders for porosities between 38% to 90%, Peclet numbers up to 100 and Reynolds number up to 20 based on the cylinder diameter and filtration speed. The effective dispersivity is measured by computing the concentration field for a uniform gradient of concentration parallel and normal...

Author(s):   Anil Kumar, C. L. Varshney and Sajjan Lal      

November 2009

The perspectives of secondary school students on common diseases and medicines used: Implications for the implementation of school based health programmes in Nigeria

  Existing health programmes in Nigeria for young people mostly target children below 5 years. Both quantitative and qualitative techniques were used to assess perspectives of male and female adolescents on common diseases they experience and medicines used for treatment during a three month study in a boarding secondary school in Owerri, Imo State of Nigeria. Malaria was named and ranked as the most severe and...

Author(s): U. M. Chukwuocha, K. K. Ashiegbu, I. N. S. Dozie and O. C. Aguwa

November 2009

Application of computer magnification to geometry

  Nowadays, computer science dominates all fields. It has become a part and parcel of human beings. In this work, the authors attempt to solve an unsolved problem in geometry by applying computer magnification technique.   Key words: Euclid, elements, postulates, non-Euclidean geometries, computer magnification.

Author(s): M. Sivasubramanian , L. Senthil kumar, P. Periasamy and S. Kalimuthu

November 2009

On a new branch of geometry

  In this study, the following theorem was proved: There exists a spherical triangle whose interior angle sum is equal to two right angles. MSC: 51 M04, 08C99. PACS: 02.40.Dr, 02.40. Ky.   Key words:  Euclid, elements, postulates, non-Euclidean geometries, algebraic applications.

Author(s): S. Kalimuthu

November 2009

Comparative in vitro dissolution assessment of soluble and plain brands of aspirin tablets marketed in Nigeria

  The in vitro dissolution profiles of four commercial brands of aspirin tablets (one soluble brand of aspirin, A1, and three plain brands of aspirin labeled A2-A4) were assessed using the USP XXI dissolution method. Various dissolution parameters such as percent dissolution in 30 min, dissolution rate constant (k), and time for 50% dissolution (DT50%) were obtained. The results indicate that A1 (the...

Author(s): Bamigbola E. A, Ibrahim M. A and Attama, A. A.