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: 23 January; 7(3)

January 2012

Trivial nomenclature of gluco-hexose in Portuguese language and other Latin based languages

Portuguese is ranked seventh among the world's languages in number of native speakers (over 200 million) and the universe of all Latin “daughter languages” is over 700 million people (e.g. Spanish, French, Italian and Romanian). There is confusion in Portuguese language and other Latin based languages about the use of the trivial nomenclature of gluco-hexose that sometimes is written as...

Author(s): Rui M. F. Bezerra, Ana Sampaio and Albino A. Dias

January 2012

Process and impact evaluation of the Odi youth centre regarding behavioural change towards HIV/AIDS

The objective of HIV prevention interventions is that young people would not only have a potential to protect them from being infected but also to shape their lives in a positive way, hence we evaluated the process and impact of a youth centre regarding behavioural change towards HIV/AIDS. This is an evaluative descriptive study using a qualitative research method. For process evaluation, in-depth, interviews were...

Author(s): M. E. Mokabane, K. Mokwena and O. O. Oguntibeju

January 2012

Experimental analyses of bending angle by a pulsed Nd:YAG laser in sheet metal forming process

The process of laser bending requires numerous experiments to pinpoint parameters that produce the highest bending angle of sheet metals. The effects of laser power, beam diameter, scan velocity, pass number, pulse duration, sheet metal thickness and proposed parameter for material properties on bending angle were investigated. The Taguchi method and analysis of variance (ANOVA) were applied to find out significant...

Author(s): M. Hoseinpour Gollo, H. Moslemi Naeini, G. H. Payganeh, S. Ding and S. M. Mahdavian

January 2012

Water supply crisis in Ankara: Review and comparison of the “1995 master plan report on Ankara water supply project”

The purpose of this study was to compare technical recommendations for water supply projects for the city of Ankara, Turkey with institutional decisions that led to a water supply crisis during a drought in August, 2007. The authors provide an evaluation of government institutions responsible for planning and provision of Ankara’s water supply and treatment, and an analysis and comparison of the “1995 Master...

Author(s): Carter Franz, Sahnaz Tigrek  and Aysegül Kibaroglu

January 2012

Cloning and expression analysis of a nitrate reductase gene related to somatic embryogenesis in Gossypium hirsutum

Nitrate reductase is a key enzyme in the overall process of nitrate assimilation by plants. A nitrate reductase (NR) gene related to somatic embryogenesis was firstly cloned from Gossypium hirsutum. Sequence alignment shows that the GhNR is closest with Tilia platyphyllos NR gene. The expression of GhNR was investigated using semi-quantitative RT-PCR in nonembryogenic calli, embryogenic calli and somatic...

Author(s): Jie Liu, Gaiying Han, Yan Zhang, Xingfen Wang, Jina Chi, Guiyin Zhang and Zhiying Ma,

January 2012

Inhibition of DPP IV is a suggested mechanism of the immunomodulatory effects of sparfloxacin

Sparfloxacin is the first marketed amino difluoroquinolone. It is currently marketed in many countries in the world and used widely for the management of urinary tract or respiratory tract infections. Fluoroquinolones could modulate both cellular and humoral immunity. The results of this study showed that Sparfloxacin could significantly suppress the proliferation of both stimulated Balb/c splenocytes and stimulated...

Author(s): Suhair Saleh, Mohammad Mohammad, Sundus H. Mashallah, Eman Elayeh, Ihab AlMasri, Hatim S. AlKhatib, Mohammad Fararjeh and Yasser Bustanji

January 2012

A cultural algorithm based particle swarm optimization approach to linear brushless DC motor PID controller

This paper presents a new hybrid Cultural Algorithm (CA) based particle swarm optimization (PSO) that converges to a significantly more accurate solution then existing particle swarm optimization and which has also been applied to the linear brushless DC motor PID controller design. The utility of hybrid CA based PSO is demonstrated by determining the optimal proportional-integral-derivative (PID) controller parameters...

Author(s): M. Khalid, Q. Luo and H. Duan

January 2012

Organic facies of the Beydağları carbonate platform (Mesozoic), Western Taurus, Antalya, Turkey

Mesozoic carbonates are widespread in the Antalya region of south-west Turkey and have been studied in the outcrop. Mesozoic units include a Jurrasic/Cretaceous sequence that comprises, from bottom to top, the following stratigraphic sequence: BeydaÄŸları Formation (Jurrasic-Cretaceous) and ÇiÄŸdemtepe Formation (Senonian). Detailed data from thick Mesozoic carbonates (BeydaÄŸları and ÇiÄŸdemtepe...

Author(s): Selin Hökerek and Orhan Özçelik

January 2012

BKK-Type bound on the zeros of spline functions

It was shown by Bernstein that the number of roots in  of a polynomial system depended only on the Newton polytopes of the system for almost all specializations of the coefficients. This result henceforth is referred to as the BKK bound and it gives an upper bound on the number of roots of a polynomial system. But this bound is only applicable to the systems of polynomials. In this paper, the BBK bound was...

Author(s): Dian-xuan Gong, Chuanan Wei and Ling Wang

January 2012

Effect of phosphorus and potassium nutrition on growth and yield of soybean in relay strip intercropping system

A field experiment was conducted to determine the effect of Phosphorus (P) application (0, 8.5, 17.0 and 25.5 kg ha-1) and Potassium (K) application (0, 37.5, 75.0 and 112.5 kg ha-1) on growth and yield of soybean (Glycine max (L.) Merr.) in relay strip intercropping system. The plant height, stem diameter, branch number and leaf area increased at first and then decreased with the increment of P application,...

Author(s): Da-Bing Xiang, Tai-Wen Yong, Wen-Yu Yang, Yan-Wan, Wan-Zhuo Gong, Liang Cui, and Ting Lei

January 2012

Groundwater quality of the shallow alluvial aquifer of Wadi Jazan (Southwest Saudi Arabia) and its suitability for domestic and irrigation purpose

The groundwater quality of wadi Jazan (southwest Saudi Arabia) experienced degradation due to rapid urbanization and industrialization. On the basis of the groundwater chemistry, an evaluation of groundwater for domestic and irrigation uses is established. Thirty one groundwater samples were collected in February 2011 from wadi Jazan, southwest Saudi Arabia to study the chemical parameters such as hydrogen ion...

Author(s): Awni Batayneh, Eslam Elawadi, Saad Mogren, Elkhedr Ibrahim and Saleh Qaisy

January 2012

A new deterioration model for electrolytic capacitors in direct current to direct current (DC-DC) converters

The output filter aluminum electrolytic capacitor is one of the key components that determine the life of direct current to direct current (DC-DC) converters, and so, establishing a deterioration model for the electrolytic capacitor is the basis for analyzing the impact on the converters’ performances. Generally, the main parasitic parameters that indicate the electrolytic capacitor deterioration such as...

Author(s): Yinyu Du, Yong Guan, Lifeng Wu, Wei Pan, Guohui Wang and Shihong Zhou

January 2012

CFD modeling of the melt spinning of poly (ethylene terepthalate) at low take-up velocities

In this study, a model was formulated to describe the melt spinning of Poly (ethylene terepthalate) (PET) at different quench air speeds and temperatures, mass throughputs and a low range of take-up velocities. The constitutive equations of the Newtonian model were used for modeling, which assumed the flow of polymer was viscous. To simulate the influence of the process parameters on the melt spinning process, a fiber...

Author(s): Sengul Teke and Sule Altun

January 2012

Development of regional gravimetric geoid model and comparison with EGM2008 gravity-field model over Korea

We constructed a regional geoid model and compared it with the EGM2008 global gravity-field model to evaluate the performance of EGM2008 for Korea. By using the Remove–Compute–Restore (RCR) technique, we developed an improved gravimetric geoid model JNUGEOID2010 on a 1 × 1′ grid by combining the EIGEN-GL04C global geopotential model (GGM), 8316 land-gravity data, an altimetry-derived marine...

Author(s): Suk-Bae Lee and Chul-Young Kim

January 2012

Menstrual health: the unmet needs of adolescent girls’ in Sokoto, Nigeria

The perception and appropriate hygiene practices of girls towards menstruation is closely linked with their level of knowledge and beliefs. This study aimed to assess the level of knowledge on menstruation and hygienic practices among adolescent school girls in an urban city, Nigeria. The study was a cross sectional survey and a total 122 girls from 4 out of the 9 schools’ were recruited using a multistage...

Author(s): Oche M. O., Umar A. S., Gana G. J. and Ango J. T.

January 2012

Kinematic GNSS-PPP results from various software packages and raw data configurations

In this study, kinematic precise point positioning (PPP) was tested. The raw data were taken from permanent stations, two airplane trajectories, a car trajectory and a walking trajectory. International GNSS Service (IGS) final products were used in the post-processing phase. The observations were processed using four different on-line software packages: the Canadian Spatial Reference System On-line Global GPS Processing...

Author(s): Angel Martín, Ana B. Anquela, José L. Berné and Miriam Sanmartin

January 2012

Application of exogenous glycine betaine on some growth traits of soybean (Glycine max L.) cv. DPX in drought stress conditions

Glycine betaine is an osmoprotectant quaternary ammonium compound that accumulates in response to stress in plants. In order to evaluation stress tolerance, determination of yield amount and vegetative characteristic of Glycine max L. cv. DPX, an experiment was performed under potting conditions in factorial randomized complete block design with 4 replications in natural environmental conditions. Treatments...

Author(s): Mohammad Ali Rezaei, Behzad Kaviani and Hadi Jahanshahi

January 2012

Towards an analytical information system of traffic accidents in the function of traffic safety monitoring

Quality monitoring, analysis and evaluation of traffic safety situation is the first and most important strategic step in establishing a traffic safety protection system. With the goal of establishing the protection system and traffic safety management system, it is necessary to use quality data from traffic accident databases. Apart from quality, with respect to different quality criteria, it is also...

Author(s): Ognjen Pantelic, Dalibor Pesic, Milan Vujanic and Dragana B. Vujaklija