Scientific Research and Essays

  • Abbreviation: Sci. Res. Essays
  • Language: English
  • ISSN: 1992-2248
  • DOI: 10.5897/SRE
  • Start Year: 2006
  • Published Articles: 2750

SRE Articles

The effect of nursery measures on mycorrhizal colonisation of Scots pine and occurrence of soil mites

July 2012

  The aim of the study was to determine the influence of organic fertilization (treated sewage sludge with addition of bark or sawdust) and mulching (forest edaphon inoculation) on the vitality of Scots pine (Pinus sylvestris L.) seedlings and their mycorrhizal structure, as well as the occurrence of soil mites (Acari). Nursery experiments were carried out in 2005 to 2007. It was stated that the studied...

Author(s): Andrzej Klimek, StanisÅ‚aw Rolbiecki, Roman Rolbiecki, Dorota HilszczaÅ„ska and Piotr Malczyk

Reinforced concrete beams with lightweight concrete infill

July 2012

  In structural design, an ideal situation in material saving is to reduce the weight of the structure without having to compromise on its strength and serviceability. A new lightweight sandwich reinforced concrete section has been developed with a novel use of lightweight concrete as infill material. The section, namely LSRC section, is suitable for use as beam or slab members. Experimental investigations into...

Author(s): Vanissorn Vimonsatit, Ade S. Wahyuni and Hamid Nikraz

Invasive alien plant species: A case study of their use in the Thulamela Local Municipality, Limpopo Province, South Africa

July 2012

  The spread of plants from one country to another through intentional and unintentional human activities is a serious threat to the world’s biodiversity; second only to habitat destruction. However, a number of studies have shown that invasive alien plant species can positively contribute to rural economies. This paper is an attempt to document a few of these species ‘positive contribution to rural...

Author(s): Sebua S. Semenya, Milingoni P. Tshisikhawe and Martin T. Potgieter

Seamless handoff across heterogeneous networks: A multi-objective optimization approach

July 2012

  The growing consumer's demand leads a great access to communication services anywhere and at anytime. It has started to accelerate the development of technologies that would allow for the integration of various Wireless Access Technologies. With regard to vertical handoff performance, there is a critical need for developing algorithms for connection management and optimal resource allocation for seamless...

Author(s): E. Arun, C. P. Maheswaran and R. S. Moni

Use of improved hue, luminance and saturation (IHLS) color space in the estimation of Nitrogen on tomato seedlings (Lycopersicon esculentum)

July 2012

  Measuring deficiencies in the nutrition of crops is important because it allow growers to take proper action in time so as to get better development of plants. Several methods have been proposed in the measurement of nitrogen. One of those methods is image processing using color spaces. In this study, five levels of deficiency of nitrogen were induced for the evaluation in tomato seedlings. Color images were...

Author(s): Gloria F. Mata-Donjuan, Adán Mercado-Luna, Enrique Rico-García and Gilberto Herrera-Ruiz

Remote laboratory development as an action research: A case study

July 2012

  This work presents a case study about how action research (AR) has been conducted in developing a real-life educational system. An explanation is given of the modified implementation of the classical AR methodology, based on the requirements of a remote laboratory system developed for the vocational training of students in higher education. This study reports a successful implementation of AR stages which...

Author(s): Nergiz Ercil Cagiltay, Gul Tokdemir, Elif Aydin and Ali Kara,

Sexual induction to male on Tilapia (Oreochromis niloticus L.) using 17α-methyltestosterone

July 2012

  Tilapia (Oreochromis sp.) is one of the main species in aquaculture today due to its nutritional characteristics and high tolerance to different culture media. However, commercial tilapia production generally requires the use of monosex populations with male individuals. One way to obtain this kind of fish stock is through the use of hormones, after which during the production cycle, the reproductive...

Author(s):   Genaro M. Soto-Zarazúa, J. Fernando García-Trejo, Enrique Rico-García and Manuel Toledano-Ayala

Evaluation of rate trend patterns via segmented regression: Case study of crime rates of Pakistan

July 2012

  In many practical regression-type problems, one uniform regression function to the data was found inappropriate, since the functional relationship between the response and the regressor(s) changes at certain points of regressors. These points are usually called break points or change points. In such situations, regression models are applied that are obtained by a piecewise definition of the regression...

Author(s): Atif Akbar and Aamna Khan

Studying the key factors responsible for the unsuccessfulness of under pressure irrigation systems: Case study of Ilam, Iran

July 2012

  The purpose of the present paper is to study the key factors responsible for the unsuccessfulness of under pressure irrigation systems in Ilam Province. The research method is casual-relative which is conducted in the form of a survey research. The statistical society of this study includes 440 exploiters who own farming or garden lands and the credits of agriculture bank are granted to them to execute the...

Author(s): Bagher Arayesh

Grape seed proanthocyanidin extract ameliorates diabetic nephropathy in rats

July 2012

  This study examined the effects of grape seed proanthocyanidin extract (GSPE) on kidney of diabetic nephropathy rats. Male Sprague-Dawley rats were divided into three Groups: control, diabetic nephropathy, diabetic nephropathy and received GSPE 500 mg/kg for 6 weeks. At first, 24-h urinary albumin excretion (UAE) was studied two weeks after induction of diabetes then each week until the end of the...

Author(s): Esrafil Mansouri, Marzieh Panahi, Mohammad Ali Ghaffari and Ali Ghorbani

Use of neuro fuzzy network with hybrid intelligent optimization techniques for weight determination in parallel Job scheduling

July 2012

  This paper is concerned with the performance tuning of the fuzzy logic controller (FLC) used for the process grain sized scheduling of parallel jobs. First, we have proposed a scheduling algorithm called agile algorithm. The performance of the agile algorithm depends on how the processes of the applications are coscheduled. The performance of the scheduling algorithm is evaluated using the features of the...

Author(s): S. V. Sudha and K. Thanushkodi

Multi-machine power system stabilizer design using improved particle swarm optimization (PSO) with time-varying acceleration coefficients

July 2012

  An efficient and most famous tool to enhance damping of the power system low frequency oscillations is the conventional widely used lead-lag Power System Stabilizer (PSS). To achieve the desired level of robust performance under transient situation, selecting a suitable design method for optimal tuning of PSS parameters is very important in multi-machine power system. Because, it is a multimodal and difficult...

Author(s): R. Effatnejad, H. Shayeghi and F G A. Ghasemi

Development of humanized monoclonal antibody by logical approach: Characterization, functional studies in vitro and immunogenicity studies in vivo in non-human primates

July 2012

  Monoclonal antibodies (mAbs) are widely used due to their exquisite specificity and once were hailed as the solution to cancer. However, when mouse mAbs are administered in humans, anti-antibody response (AAR) is frequently observed. Using humanized mAbs which are commonly developed by CDR-grafting method, the AAR is negligible, but loss of binding has also been consistently reported. Therefore, in an effort...

Author(s): Suba Dharshanan, Heilly Chong, Cheah Swee Hung and Zulkeflie Zamrod

An unusual case of Henoch-Schönlein purpura associated with varicella zoster infection

July 2012

  Henoch-Schönlein purpura (HSP) is one of the most common vasculitis of childhood which is characterized by nonthrombocytopenic palpable purpura, arthritis, renal and gastrointestinal system (GIS) involvement. The etiology of HSP is mainly unknown and antecedent upper respiratory tract infection, usually viral and Streptococcal origin, drugs, cold, insect bite or some foods are the known triggering...

Author(s): Hüseyin DAÄž, AyÅŸen KUTAN FENERCIOÄžLU and Güner KARATEKIN

Effects of four depths of spodic horizon on root morphology and nutrient partitioning of kenaf grown on sandy beach ridge soil

July 2012

  Kenaf has a potential to be an industrial crop in Malaysia. Hence, this study was conducted to investigate the root morphology, nutrient partitioning and yield of kenaf at various depths of spodic horizons in beach ridges interspersed with swales (BRIS) soil. Study was conducted at RhuTapai Research Station, Terengganu, Peninsular Malaysia. Kenaf was grown at L1 20 cm, L2 48 cm, L3 77 cm and L4 118 cm...

Author(s): K. A. Dharejo, A. R. Anuar, Nasima Junejo, Y. M. Khanif and A. W. Samsuri

Generic computing of enhanced speckle reduction on low end ultrasound machine images

July 2012

  Due to the emergence of microelectronics, ultrasound diagnostic machine can now be manufactured at low cost. The affordability of low cost ultrasound diagnostic machine is of utter importance in allowing wider exposure of ultrasound technology to the general public. Nonetheless, in comparison with international standard requirements, the quality of images from low cost ultrasound machine is still lacking....

Author(s): Lai Khin Wee , Joanne Soh Zi En, Hum Yan Chai  and Eko Supriyanto

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

July 2012

  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

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

July 2012

  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.

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

July 2012

  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.

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

July 2012

  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

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

July 2012

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

Aortic branch variations: An anatomical study in 900 subjects

July 2012

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

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

July 2012

  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

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

July 2012

  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

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

July 2012

  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.

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

July 2012

  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

Pesticide use in agriculture: The philosophy, complexities and opportunities

July 2012

  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

Comparative diversity of insects in various habitats of Kovada Lake National Park Basin (Isparta, Turkey)

June 2012

The study was conducted in nine habitats representing different ecosystems in Kovada Lake Natural Park basin located in Isparta province. Pitfall traps were used for collecting various insects during 2007-2008 by regular weekly samplings. Consequently, a total of 64 insect species belonging to 15 families and 4 orders were recorded from the natural park basin. According to Shannon-Wiener and Simpson indices of...

Author(s): Baran ASLAN and Ismail KARACA

Estimation of crustal thickness by combination of two geophysical methods: A case study

June 2012

In this study an extended geophysical survey using gravity and high angle refracted seismic methods with recorded earthquake has been carried out in Kerman province in southeast of Iran. The purpose of the applied geophysical surveys was to provide information on crustal structure and lithospheric thickness. The purpose of this research is focused on determination of Moho depth and for this reason several profiles...

Author(s): Roshanak Rajablou, Asghar Teymoorian Motlagh and Abbas Abbaszadeh shahri

Characterization and durability of wood-polymer composite prepared by in-situ polymerization of methyl methacrylate and styrene

June 2012

The current study demonstrates the effect of in-situ formation of polymer from vinyl monomers on the morphology and durability of wood. Mixed monomers of methyl methacrylate (MMA) and styrene (St) (1:1 molar ratio) were effectively vacuum/pressure impregnated into the cellular structure of a fast-growing poplar wood, Populus ussuriensis Kom, and then underwent a catalyst-thermal process to polymerize...

Author(s): Dong Xiaoying, Li Yongfeng, Fu Yunlin, Gao Jiali and Liu Yixing

Simulation study of damage detection in steel shear frame buildings using impulse response and wavelet analysis

June 2012

Structural frames, demonstrate both elastic and plastic behaviour depending on their load. At early stages of earthquake loading structural systems remain in the elastic phase, but when the loading increases, plastic hinges form and affect the structural response. Determining the location and time of this damage is critical. The aim of previous methods such as Fourier, short time Fourier or wavelet transform was to find...

Author(s): Raufi, F. and Bahar, O.

Neuro-fuzzy modelling and forecasting in water resources

June 2012

Recently, with rapid development in computer science and technology, artificial intelligent (AI) models that emulate human thinking ability and brain structure are increasingly used in hydrological forecasting context. Neuro-fuzzy (N-F) models or specifically adaptive neuro-fuzzy inference systems (ANFIS) are rapidly becoming conventional in either academic or industrial applications. Although, there is a common network...

Author(s): Hadi Galavi and Lee Teang Shui

Review of soft soils stabilization by grouting and injection methods with different chemical binders

June 2012

Soil stabilization has become one of the useful solutions to treat the soft soils to achieve the required engineering properties and specification so that structures can be placed safely without undergoing large settlements. Soil stabilization by admixture was developed in Japan during 1970s and 1980s. The treated soil has greater strength, reduced compressibility and lower hydraulic conductivity than the original...

Author(s): Sina Kazemainand Maassoumeh Barghchi

Effect of boron carbide on the microstructure and the mechanical properties of segments produced using hot pressing method

June 2012

In this study, effect of boron carbide (B4C) addition on microstructure and mechanical properties of diamond cutting segments was investigated. For this purpose, the boron carbide addition quantity was changed as 2, 5 and 10 wt%. In all of the experiments, hot pressing process was carried out at 35 MPa, at 700°C and sintering time of 3 min. Microstructure and phase composition of segments were determined by Scanning...

Author(s): Serkan Islak, DurmuÅŸ Kir, ErtuÄŸrul Çelik and Halis Çelik

Meta analysis of zoledronic acid on the bone markers among osteoporosis patients

June 2012

Osteoporosis is a skeletal disease that is characterized by compromised bone strength predisposing a person to an increased risk of fracture. Zoledronic acid (ZOL) is an aminobisphosphonate with a high affinity for mineralized bone. This review of relevant meta-analysis aimed to clarify the effect of ZOL in treatment and prevention of osteoporosis. Random control trials that investigated the evidence for the role of ZOL...

Author(s): Liu Ming, Pan Wei, Chen Yan and Chen Decai

An intelligence system approach using artificial neural networks to evaluate the quality of treatment planning for nasopharyngeal carcinoma

June 2012

The quality of the nasopharyngeal carcinoma (NPC) treatment plans evaluation using three types of artificial neural networks (ANNs) are instructed by three different training algorithms. Three ANNs including Elman (ANN-E), feed-forward (ANN-FF), and pattern recognition (ANN-PR) were trained by using three different models, that is, leave-one-out (Train-loo), random selection (Train-random), and user...

Author(s): Tsair-Fwu Lee#, Pei-Ju Chao,#, Chang-Yu Wang, Wei-Luen Huang, Chiu-Ching Tuan, Mong-Fong Horng, Jia-Ming Wu, Shyh-An Yeh, Fu-Min Fang and Stephen Wan Leung

Fluorescent demonstration of neuronal degeneration in cyanide neurotoxicity through anti protein G-colloidal gold conjugate labeling

June 2012

The study of the mechanism of neuronal cell death has been an important aspect of cell biology in the last decade. Considering the somewhat non-specific nature of the methods and the complexity of the neuronal cell cycle, a multi-technique approach has been suggested. This study is aimed at describing a method for demonstration of neuronal degeneration in the visual cortex (molecular layer) of adult wistar rats. It...

Author(s): Ogundele M.

Physico-chemical analysis of selected groundwater samples of Ilorin town in Kwara State, Nigeria

June 2012

This study was conducted to assess the impacts of industrial activities on the ground water quality in industrial and non- industrial area in Ilorin Town. The quality assessment was focused on physico-chemical parameters. Groundwater samples were collected from industrial area and from non-industrial area which were used as control. The results obtained were compared with standards prescribed by WHO. Total of 5...

Author(s): Hussein K. Okoro, Adeniyi Adeyinka, Omollo E. Jondiko and Bhekumusa J. Ximba

Application of umbilical cord blood stem cell transplantation: A better option in regenerative medicine

June 2012

Extensive research in the field of stem cells has proven the possibility of repairing the damaged tissues and organs. Stem cells can divide and differentiate into various specialized cells. In adult organisms, stem cells act by repairing adult tissues and in a developing embryo, they not only differentiate into all the specialized cells, but also maintain the normal turnover of regenerative organs.Unfortunately the...

Author(s): Abbas H. Alsaeed

Antifungal potential of Parthenium hysterophorus L. plant extracts against Fusarium solani

June 2012

Fusarium wilt, caused by Fusarium solani (Mart.) Sacc, is an economically important disease of potato in Pakistan. Recent studies have shown that plant pathogens can be controlled by plant products as these are biodegradable, exhibit structural diversity and complexity. Presently, antifungal bioassays were conducted to confirm mycotoxic potential of root, shoot and leaf of Parthenium...

Author(s): Zunera Zaheer, Shazia Shafique, Sobiya Shafique and Tahir Mehmood

Nutritional and organoleptic properties of three common Nigerian foods cooked with three different energy sources

June 2012

This study investigates the nutritional and organoleptic properties of rice, beans and yam cooked with firewood, biogas and liquefied petroleum gas (LPG) that is, each of these foods was cooked with these energy sources. The biogas was generated from cow dung using a 10 m3 digester at the National Center for Energy Research and Development, University of Nigeria, Nsukka. The substrate (cow dung) used for generating...

Author(s): J.I. Eze

Combining 1000 mg oral acetaminophen with 75 mg intramuscular Diclofenac of analgesic efficacy for acute renal colic treatment

June 2012

In this study, we compared oral acetaminophen alone versus intramuscular diclofenac alone versus both together in the treatment of acute renal colic. A prospective, randomized, and double-blind study was conducted in the Emergency Department. Patients were divided into three groups, which were given either acetaminophen + placebo (n = 25), diclofenac sodium + placebo (n = 25) or acetaminophen + diclofenac...

Author(s): Hüseyin NARCI, Murat UÄžUR, Hüküm UZUN and Mustafa YANDI

Aeromagnetic data interpretation to locate buried faults in Riyadh Region, Saudi Arabia

June 2012

High resolution aeromagnetic data and various filtered maps are used in the present study to detect buried faults in the Riyadh region, Saudi Arabia. Filtering techniques such as Butterworth filter, tilt derivative, source edge detection (SED) and Euler deconvolution (ED) were used to map the structural lineaments in the study area. In this respect, the interpretation of the magnetic anomaly maps indicates that the area...

Author(s): ElKhedr Ibrahim, Osama Kassem and Abdel Aziz Al Bassam

Preliminary study on consumers’ and meat traders’ perceptions of beef quality and how the beef quality is affected by animal welfare practices

June 2012

A study was conducted to determine the perceptions of rural meat consumers and traders on meat quality and how the welfare of slaughter cattle affects beef quality. The study focused on the three stages: prior to purchase, at point of purchase and at point of consumption. A total of 102 rural consumers and 31 meat traders were conveniently sampled and used in the study. Principal component analysis with varimax...

Author(s): P. Vimiso, V. Muchenje, U. Marume and R. Chiruka

Malware detection based on evolving clustering method for classification

June 2012

Malware is a computer program that can replicate itself and cause potential damage in data files. The high speed of the computers and networks increased the virus spread. To avoid the virus infection and the data loss, it is important to use an efficient and effective method for virus detection. This paper proposes an approach for malware detection based on the evolving clustering method. The...

Author(s): Altyeb Altaher, Supriyanto, Ammar ALmomani, Mohammed Anbar and Sureswaran Ramadass

Effective virtual teams for new product development

June 2012

At present, the existing literature shows that the factors which influence the effectiveness of virtual teams for new product development are still ambiguous. To address this problem, a research design was developed, which includes detailed literature review, preliminary model and field survey. From literature review, the factors which influence the effectiveness of virtual teams are identified and these factors are...

Author(s): Nader Ale Ebrahim, Shamsuddin Ahmed, Salwa Hanim Abdul Rashid and Zahari Taha

Evaluation of reinforced concrete beam behaviour using finite element analysis by ABAQUS

June 2012

In this research, the ABAQUS program is used to model the behaviour of reinforced concrete (RC) beams. The finite element model uses the concrete damaged plasticity approach; this model can help to confirm the theoretical calculations as well as to provide a valuable supplement to the laboratory investigations of behaviour. For validation, a reinforced concrete beam was modelled that had been experimentally tested and...

Author(s): Hamid Sinaei, Mahdi Shariati, Amir Hosein Abna, Mohammad Aghaei and Ali Shariati

Application of Schmidt rebound hammer and ultrasonic pulse velocity techniques for structural health monitoring

June 2012

The concept of non-destructive testing (NDT) is to obtain material properties of "in place" specimens without the destruction of the specimens and to do the structural health monitoring. Ultrasonic pulse velocity (UPV) used together with Schmidt Rebound Hammer (SRH) tests give a combined test method for health assessment by a suitable correlation between these two tests along with test by compressive testing...

Author(s): Mohammadreza Hamidian, Ali Shariati, M. M. Arabnejad Khanouki, Hamid Sinaei, Ali Toghroli and Karim Nouri

Security verification of the return routability protocol by Murphi

June 2012

  The return routability protocol (RRP) is commonly used in route optimization to secure and authenticate mobile IPv6 signals between the mobile node and its correspondent node. In this paper, the correctness and the security of RRP were verified using a Murphi model checker. The results show that RRP has no failure and is correct. However, it is not secure, because an...

Author(s): Wafaa A. H. Ali Alsalihy and Mohammed I. Younis

Research of significant anthropogenic changes in Ostrava city area (Czech Republic)

May 2012

  This study aimed to widen the knowledge on landscape element changes in areas exposed to the effects of mining and other industries, which represent one of the most affected types of landscape in terms of environmental changes. It provides results of analyses of landscape element changes in the selected area of Ostrava Basin (city of Ostrava) in the North-east of Czech Republic. The study was compiled for...

Author(s): Marian MARSCHALKO, Işık YILMAZ, Karel KUBEÄŒKA, Martin BEDNÁRIK, Barbara STALMACHOVÁ, Tomáš BOUCHAL and Orlando ARENCIBIA

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