Scientific Research and Essays

  • Abbreviation: Sci. Res. Essays
  • Language: English
  • ISSN: 1992-2248
  • DOI: 10.5897/SRE
  • Start Year: 2006
  • Published Articles: 2738

Table of Content: 5 July, 2012; 7(25)

July 2012

Pesticide use in agriculture: The philosophy, complexities and opportunities

  Exaggerated and incompetent use of chemical pesticides in crop production can have adverse effects on human health, natural ecosystems and social capital. The potential impacts are interconnected and complicated, so the current scientific knowledge base of its understanding seems to be imperfect, and the degree of impacts could be much more; therefore the rationality of pesticide use in agriculture ought to...

Author(s): Kishor Atreya, Bishal Kumar Sitaula and Roshan Man Bajracharya

July 2012

The effect of ceramic in combinations of two sigmoid functionally graded rotating disks with variable thickness

  This paper present the elastic solutions of the disk made of functionally graded material (FGM) with variable thickness subjected to rotating load. The material properties are presented by combination of two sigmoid FGM (S-FGM) and disk thickness profile are assumed to be represented by power law distributions. Aluminum-ceramic-aluminum FG rotated disk is considered. Hollow disks are considered and the...

Author(s): Aidy Ali, M. Bayat, B. B. Sahari, M. Saleem and O. S. Zaroog

July 2012

Molecular cloning and analysis of a novel HMW-GS gene Glu1-St1.5 from Elymus sibiricus in Qinghai-Tibetan Plateau

  In the present study, a HMW-GS allele Glu1-St1.5 was isolated and characterized from Elymus sibiricus. Nucleotide sequence analysis indicated that the St1.5 shared the highest similarity with St1.3 from Elymus canadensis, but the “TA” insertion mutation at 15 to 16 bp in signal peptide sequence made it an inactive gene, because three premature stop codons were generated by...

Author(s): LIU Jin,#, ZHANG Bo#, LIU Bao-long, LI Hong-qin, WANG Xin, LIU Qi, WEI Le, LIU Deng-cai, and ZHANG Huai-gang   # These authors contributed equally to this paper.

July 2012

Growth, phosphorus status, and nutritional aspect in common bean exposed to different soil phosphate levels and foliar-applied phosphorus forms

  This study aimed to investigate the effect of the foliar application of phosphite and phosphate on growth, phosphorus (P) status, and nutritional aspect of common bean (Phaseolus vulgaris cv. Radiante) plants grown under different soil phosphate levels. Experiment was organized in factorial scheme completely randomized using 2 soil phosphate levels (Pi-starved and Pi-sufficient plants), combined...

Author(s): Fabrício William Ávila, Valdemar Faquin, Allan Klynger da Silva Lobato, Danielle Pereira Baliza, Douglas José Marques, Alexandre Martins Abdão dos Passos, Carla Elisa Alves Bastos and Elaine Maria Silva Guedes

July 2012

Effects of short term exposure of layer-type breeder eggs to magnetic field on hatchability and hatching parameters

  Two trials were conducted to investigate the effects of short term exposure of layer-type breeder eggs to magnetic field (MF) of 7.5 Gauss (0.75 mT) at 50 Hz, for 0, 20, 40 and 60 min before incubation on the characteristics of egg contents, egg weight loss, embryonic growth and hatching time (Trial 1) and hatchability of eggs (Trials 1 and 2). 384 and 240 Leghorn and Baladi eggs were used in trials 1 and 2,...

Author(s): Shafey T. M., M. A. Alodan, M. M. Ghannam, M. A. K. Abdelhalim and M. M. Mady

July 2012

Aortic branch variations: An anatomical study in 900 subjects

The anatomic variations in the branches arising from the aortic arch in 900 Caucasian subjects and the exact origin of the right subclavian artery, the right common carotid artery, the left common carotid artery, the left subclavian artery, the right vertebral artery, and the left vertebral artery were analyzed by means of angio-computerized tomography. Seven hundred and thirty-four subjects (81.55%) had three branches...

Author(s): Federico Mata-Escolano, Luis Aparicio-Bellver, Vicente Martinez-Sanjuanand Juan A. Sanchis-Gimeno

July 2012

Anthropometric measures as predictors for the occurrence of insulin resistance among obese Jordanians

A total of 210 overweight and obese participants were recruited to investigate the association between various obesity parameters with insulin resistance (IR) in Jordanians. Weight, height, waist circumference (WC) and hip circumference were measured, and the corresponding body mass index (BMI), waist to hip ratio (WHR), and waist to height ratio (WHtR) were calculated. HOMA-IR was calculated from the corresponding...

Author(s): Khalid M. Abu khadra and Ahmad Aljaberi

July 2012

Effects of cold stratification and sulphuric acid pre-treatments on germination of pomegranate (Punica granatum L.) seeds in greenhouse and laboratory conditions

  This study was carried out to determine the effects of some pretreatments including soaking in concentrated (98%) H2SO4 for 10, 20, 30, 40 and 50 min and cold stratification (at 4±1°C) for 15, 30, 45 and 60 days followed by soaking in H2SO4 for 10, 20, 30, 40 and 50 min on seed germination and to investigate how to overcome dormancy of Punica granatum L....

Author(s): Askin Gokturk, Zafer Olmez, Banu Karasah and Hilal Surat

July 2012

Assessment of atherosclerosis in erectile dysfunction subjects using second derivative of photoplethysmogram

  Cardiovascular diseases are the main cause of death worldwide. Stiffing of the arterial wall is normally related with the beginning, or the progression of atherosclerosis. Atherosclerosis plays an important role in loss of the elastic properties of arteries walls. Thereby, atherosclerosis might cause harmful damage to arteries which in turn might cause cardiovascular disease and erectile dysfunction. Carotid...

Author(s): Yousef Qawqzeh, M. B. I. Reaz, M. A. M. Ali, Kok Beng Gan, Zulkifli S.Z. and Noraidatulakma A.

July 2012

A pediatric oncology group pilot study on childhood cancers at the Chantal Biya Foundation Yaounde, Cameroon: Report of 350 cases

  Cancer, especially in children is a public health problem in Cameroon. Suspected cases in the centre are biopsied and analysed in the Pathology Service of the Yaounde General Hospital. To find out the clinico-pathologic profile of patients seen at the centre, Clinical and Pathology registers of the two services were reviewed in this retrospective 3 years study from 2005 to 2007 and the data were analyzed. 350...

Author(s): Enow-Orock G. E., Pondy A., Doumpe P., Koki N. and Lemerle J.

July 2012

Hybrid multiobjective evolutionary algorithm based technique for economic emission load dispatch optimization problem

  In this paper, we present a hybrid approach combining two optimization techniques for solving economic emission load dispatch (EELD) optimization problem. The proposed approach integrates the merits of both genetic algorithm (GA) and local search (LS), where it employs the concept of co-evolution and repair algorithm for handling nonlinear constraints, also, it maintains a finite-sized archive of...

Author(s): A. A. Mousa, and Kotb A. Kotb