Scientific Research and Essays

  • Abbreviation: Sci. Res. Essays
  • Language: English
  • ISSN: 1992-2248
  • DOI: 10.5897/SRE
  • Start Year: 2006
  • Published Articles: 2767

Table of Content: 4 January; 6(1)

January 2011

The synergistic effects of sodium valproate and extremely low frequency electromagnetic field on angiogenesis

Angiogenesis is a complex activity needed for physiological process. However, it is required for many pathological conditions as solid tumor progression and metastasis. So, today, researchers study on angiogenesis to find new clinical methods. In this research, Ross fertilized eggs were used and were divided in 5 random groups of 70 which consisted of : control, sham-exposed, treated with 5 μl sodium valproate...

Author(s): Saeedeh Zafar Balanezhad, Kazaem Parivar, Javad Baharara, Homa Mohseni Koochesfahani and Alireza Ashraf

January 2011

A new approach of improved finite difference scheme on plate bending analysis

Improved Finite Difference Scheme (IFDS) for thin plates has been provided in a new way which differs from classical finite difference method and has been proposed to provide convergence with using fewer numbers of unknown deflections. For the determination of new finite difference operator, two differentload-deflection systems have been considered. The first system consisted of the actual plate and loads on it. The...

Author(s): Ali Ergün and Nahit Kumbasar

January 2011

Real time noise-speech discrimination in time domain for speech recognition application

A simple noise-speech discrimination method in time domain is presented. The random signal noise characteristics were studied in time domain. Using the characteristics information, in real time processing, a simple algorithm to detect starting and ending point of speech samples in time domain is being demonstrated. Out of 100 attempts, about 94% of successful attempts of noise-speech discrimination have been obtained...

Author(s): N. Mokhtar, H. Arof, F. R. Mahamd Adikan and M. Mubin

January 2011

Morphological and chemical diversity among hawthorn (Crataegus spp.) genotypes from Turkey

Anatolia had been known to have rich hawthorn gene pool including diverse genotypes adapted to different local conditions in different regions of the country. Long-term seed propagation and also human selection revealed a great diversity of hawthorn plants in Anatolia. In this study, the morphological (fruit weight, dimensions, fruit skin color,  flesh/seed ratio, plant habits and thorn situation) and chemical (pH...

Author(s): Yanar M., Ercisli S., Yilmaz KU, Sahiner H., Taskin T., Zengin Y., Akgul I. and Celik F.

January 2011

Shiga toxin-producing Escherichia coli O26 strains in bovine feces in East-Azarbaijan, Iran

Shiga toxin-producing Escherichia coli (STEC) strains are a diverse group of organisms associated with severe gastrointestinal and systemic disease in human. Among non-O157 STEC family, E. coli O26 strains are the common serogroup causing disease such as HUS in human. Cattle are thought to be the main source of this microorganism. We collected 211 samples of bovine feces from different area in...

Author(s): Jalil Khandaghi, Jalal shayeghi, Mansoor Khakpoor and Abolfazl Barzgari

January 2011

Investigation of the machinability of the Al 7075 alloy using DLC coated cutting tools

Aluminum and aluminum alloys are vital to the aerospace industry. They are of great significance to other areas of transportation and building in which durability, strength and light weight are required. In this study, an experimental investigation on surface roughness, cutting temperature and cutting forces in turning of aluminum 7075 alloy using diamond like carbon (DLC) coated cutting tools was presented. The effects...

Author(s): Ay Mustafa and Karagol Tanju

January 2011

Error concealment innovator based on the multi-directional interpolation by using the similarity segmentation

In this paper, an error concealment algorithm based on the multi-directional interpolation (MDI) was proposed. The algorithm has the capability to recover the damaged blocs, whether located in smooth or non-smooth areas. In the case of smooth regions, the missing coefficients were estimated by interpolating these coefficients with undamaged adjacent pixels. While, in the non-smooth areas (for example edge components),...

Author(s): Alaa Kh. Al-Azzawi, M. Iqbal Saripan, Adznan Jantan and Rahmita Wirza O. K. Rahmat

January 2011

The effect of long–term exercise training on the blood glucose level and weight in alloxan administered mice

This study was to evaluate the effect of long-term exercise training on blood fasting glucose (BFG) level and weight in alloxan administered mice. Forty mice, Mus musculus species was alloxan administered by an intraperitoneal (i.p.) injection 3 times in two weeks intervals (200 mg/kg b.w.), and training program was administered by treadmill for 10 min 5 day/week and exercise period was prolonged for 2.5...

Author(s): Ali Cimbiz, Yusuf Ozay, Nilay Yurekdeler, Kasım Caycı, Tuncay Colak, C. Caner Aksoy and Hakan Uysal

January 2011

Study of tin accumulation strategy by Cyperus species in pot experiments

The present investigation reports the results of Sn (tin) accumulated by Cyperussp. in a pot experiment on different levels of Sn supply (0, 0.5, 2, 6, 25, 60 mg/kg). All tested Cyperus species showed the different abilities to remove Sn which depend on species and concentrations level. Sn accumulated by the leaves, twigs and roots linearly increased with increasing Sn supply levels. The higher...

Author(s): Muhammad Aqeel Ashraf, Mohd. Jamil Maah and Ismail Yusoff

January 2011

Geotechnical and geological studies of NWCT tunnel in Iran focusing on the stabilization analysis and design of support: A case study

In this paper, a detailed geomechanical investigation of rock masses of North Water Convey Tunnel (NWCT) and its stability analysis has been carried out. The NWCT is located in the north of Iran and is to be constructed in-order to convey water for agriculture purposes. The main instability in the tunnel is joints and faults. The rocks mass encountered in the tunnel route are made of argillaceous, sandstone and shale....

Author(s): Vahed Ghiasi, Husaini Omar, Jamal Rostami, Zainuddin B. Md. Yusoff, Samad Ghiasi, Bujang .K. Huat and Ratnasamy Muniandy

January 2011

Antioxidant properties of 12 cornelian cherry fruit types (Cornus mas L.) selected from Turkey

Cornus mas L. is a naturally growing dogwood species in Anatolia. In present study, the antioxidant activity of 50% aqueous methanol extracts of 12 cornelian cherry types were evaluated by various antioxidant assay, including free radical scavenging, hydrogen peroxide (H2O2) scavenging and metal (Fe+2) chelating activities. The methanolic fruit etxracts of the Cornus mas L. fruit types (H2O2 and...

Author(s): Nilda Ersoy, Yavuz Bagci and Veli Gok

January 2011

Assessing the scenario concerning environmental sustainability in Malaysia

There is strong scientific evidence that energy consumption and production are often related to greenhouse emissions. It has been argued that the cost of taking smart, effective cooperative action towards reducing global warming should be manageable. Following an effective approach, our work investigates the scenario of environmental sustainability in Malaysia and reassesses energy policy and alternative energy sources...

Author(s): Abul Quasem Al-Amin, Mohammad Nurul Azam, Fatimah Kari and Walter Leal Filho

January 2011

Fuzzy and three-step control of refiner system to get stable freeness for recycled paper

This paper presents the design of refiner control system for recycled paper stock preparation as a complete solution to fulfill refiner control requirements. This control system is based on Specific Energy Consumption (SEC) control (indirect freeness control) providing uniform refining during production range changes or changes in consistency and flow. In addition, SEC controller provides minimizing paper breaks,...

Author(s): Mahit Gunes

January 2011

Ultramicrostructure of tissue repair in the rat with spinal cord injury following transplantation of neural stem cells

We observed ultramicrostructure of the contact or the connection between neural stem cells (NSCs) and host cells following transplantation of NSCs to treat the spinal cord injury (SCI). NSCs were labeled with Feride prior to transplantation. pEGFP-C2-Trk was transfected to transplanted NSCs under liposome medication. The EGFP-TrkB fusion protein was located with the colloidal gold technique. The contact or connection...

Author(s): Guanghui Dai, Xuebin Liu, Zan Zhang and Ruxiang Xu

January 2011

Application of a scientific approach to evaluate IC industrial supply chain linkage

The current studies on supply chain management are limited in their analysis of the linkages between firms in related industries. This study estimates the degree of linkages among designers, manufacturers and firms of testing and packaging. Significant linkage is demonstrated by the high correlation coefficients of the RSP ratio in IC industrial supply chain. But the magnitude of linkage is low by regression analysis....

Author(s): Cheng-Chang Lin and Chao-Chen Hsieh

January 2011

Visual compensation in localization of a robot on a ceiling map

In a visual odometry system, location of a mobile robot is automatically estimated (localized) from video. When the video is captured by an "upward" camera fixed to an indoor mobile robot, a panorama image of the ceiling (ceiling map) is generated by using a visual motion between two adjacent frames in the video. Similarly, location of another robot can be estimated on the ceiling map by using a visual motion...

Author(s): T. Matsumoto, T. Takahashi, M. Iwahashi, T. Kimura, S. Salbiah and N. Mokhtar

January 2011

Impact of UPFC-based damping controller on dynamic stability of Iraqi power network

The work of this paper is a hopeful attempt to rectify poor damping issue of the Iraqi National Super Grid System (INSGS). Without proper damping control these oscillations drive the system toward instability following severe disturbances. In this paper, a Unified Power Flow Controller (UPFC)-based damping controller was proposed to improve the dynamic stability of the INSGS. The system with UPFC installed in different...

Author(s): Lokman H. Hassan, M. Moghavvemi and Haider A. F. Mohamed

January 2011

Diagnosis of complicated congenital heart diseases in neonates and infants using 64-slice spiral CT

Although Ultrasonic Cardiography (UCG) is effective, non-invasive, and the most commonly used examination method for Congenital Heart Disease (CHD), other modern medical imaging modalities such as Computed Tomography (CT) are needed to further clarify the disease before surgical intervention. To explore the clinical value of CT in diagnosis of complicated CHD in neonates and infants compared with UCG, 103 neonates and...

Author(s): Weiyong Ruan, Ming Yang, Yongchi Gong, Lixing Qiao, Xuming Mo and Gaojun Teng

January 2011

Synthesis of poly [β-(1→ 4)-2-amino-2-deoxy-D-glucopyranose]/lead nanocomposite

Chitosan (poly [β-(1→ 4)-2-amino-2-deoxy-D-glucopyranose] β-PADG) is a natural polymer with abundant primary amino groups in its molecular structure. Due to its excellent properties such as biocompatibility, biodegradability, nontoxicity, and adsorption properties, it is a potential polysaccharide resource. The present investigation describes the preparation and characterization of novel biodegradable...

Author(s): S. Adewuyi, N. Sanyaolu, H. Ayedun and S. A. Amolegbe

January 2011

A low cost adaptive graphical user interface for the visually handicapped with multiple conditions

Limited trials have been demonstrated that a Graphical User Interface (GUI) for the visually handicapped called Dynamic Pattern System (DPS) can adaptively utilize residual vision by generating different patterns, colors and shapes. Low vision simulators, used by normally sighted, have allowed researchers to clearly identify visual impairments that can be helped by DPS. However, it is not uncommon for the visually...

Author(s): D. Veal and S. P. Maj

January 2011

Low cost, pedagogically enhanced, remote access, laboratory based instruction for developing countries

Practical, hands-on skills are of paramount importance to potential employers. In the field of network technology students must be able to configure, manage and fault diagnose networks. The world’s largest supplier of network equipment established the Cisco Network Academy Program (CNAP). Institutions qualifying to become CNAP academies can purchase low cost network equipment. However, for many institutions this...

Author(s): S. P. Maj and D. Veal

January 2011

Analyzing economic structure and comparing the results of the predicted economic growth based on linear and non-linear models

Investigating the effective factors on economic growth is of great importance for most economists. Although, lots of studies have been done on economic growth in the world, it has less been regarded in Iran. In this article, by estimating growth regression, we attempt to investigate the supply side of economic growth in Iran. Then a comparison was done between the predictive results of Neural network (NN) and Slow...

Author(s): Mirnaser Mirbagheri, Nader Mehregan, Amir Afsar and Ebrahim Abdi

January 2011

Cutting parameters identification using multi adaptive network based Fuzzy inference system: An artificial intelligence approach

The influences of the machine parameters on machined parts are not always precisely known and hence, it becomes difficult to recommend the optimum machinability data for machine process. This paper proposes a method for cutting parameters identification using Multi adaptive Network based Fuzzy Inference System (MANFIS). Three Adaptive Network based Fuzzy Inference System (ANFIS) models were used in the first step to...

Author(s): Adeel H. Suhail, N. Ismail, S. V. Wong and N. A. Abdul Jalil

January 2011

A study of the compressibility behavior of peat stabilized by DMM: Model and FE analysis

Peats are considered as extremely soft, unconsolidated deposits. These soils are geotechnically problematic, due to their high compressibility and low shear strength. Cement is widely used for the stabilization of peat by deep mixing method (DMM). This paper presents the results of the model study of compressibility properties of fibrous, hemic and sapric peats, stabilized with columns formed by DMM. The columns were...

Author(s): Bujang B. K. Huat, Sina Kazemian, Arun Prasad and Maassoumeh Barghchi

January 2011

Project schedule influenced by financial issues: Evidence in construction industry

Financial issues in construction projects lead to serious consequences that may retard the development of a project and influence the overall economical condition of a country. This paper addresses the issues of financial-related delays in construction projects. Aiming to determine the major causes of financial-related problems leading to construction delay and to identify possible solutions in mitigating...

Author(s): Hamzah Abdul-Rahman, Chen Wang, Roshana Takim and SzeMin Wong

January 2011

Assessing the strength of reinforced concrete structures through Ultrasonic Pulse Velocity and Schmidt Rebound Hammer tests

The experimental studies using Ultrasonic Pulse Velocity and Schmidt Rebound Hammer as Non-Destructive Tests (NDT) were presented in this paper to establish a correlation between the compressive strengths of compression tests and NDT values. These two tests have been used to determine the concrete quality by applying regression analysis models between compressive strength of in-situ concrete on existing building and...

Author(s): Mahdi Shariati, Nor Hafizah Ramli-Sulong, Mohammad Mehdi Arabnejad K. H., Payam Shafigh and Hamid Sinaei

January 2011

Capacitor meter to measure the percentage of water in home diesel tank

Diesel is one of the most common used fuels in our life today. One of its popular usages in Jordanians’ homes is in central heating unit, where diesel is stored in a tank outside the home and actually in an underground tank. Cheating in quality of the diesel is a big problem that has faced many people. However, there is no dedicated instrument until now that determined the percentage of the water in the diesel...

Author(s): Shatha K. Jawad, Samah Z. Al-Rahamnah, Samir M. Said, Ayah A. Muwafi and Ghada H. Al-Issawi

January 2011

Identification of cytogenetic alterations in infertile couples experiencing repeated spontaneous abortions - using Giemsa Trypsin Giemsa banding (GTG)

The most significant complication of pregnancy is repeated spontaneous abortions. The incidence of Chromosomal Instability (CI) association is high incouple experiencing two or more recurrent miscarriages. The altered centromere functions may have an increased risk for CI and this leads to spontaneous abortion due to cell division errors. In this study we aimed to screen karyotype results in couples who were...

Author(s): Shafiahammedkhan Mustaqahamed, Vellingiri Balachandar, Subramaniam Mohanadevi, Meyyazhagan Arun, Pappusamy Manikantan, Keshavarao Sasikala, Alagamuthu Karthickkumar, Silambuselvi, Shanmugam Sureshkumar and Balasubramanian Balamuralikrishnan