Scientific Research and Essays

  • Abbreviation: Sci. Res. Essays
  • Language: English
  • ISSN: 1992-2248
  • DOI: 10.5897/SRE
  • Start Year: 2006
  • Published Articles: 2768

SRE Articles

Corona discharge to explain the image of the Turin Shroud: Experimental results

July 2012

  Corona Discharge (CD) has been considered as a way to produce marks on a linen tissue and then as one possible explanation of the image observed in the Turin Shroud (TS). We used CD to produce images on linen from two silver figures. Their photograph negatives resemble that of the TS. Discussion of the CD produced images is presented. Also, breaking resistance of the linen threads was measured as function of...

Author(s): Jorge García-Macedo, Naxi Cansino and Guadalupe Valverde-Aguilar

Image formation of the Turin Shroud: Hypothesis based on water vapor effects of light absorption

July 2012

  The Shroud of Turin displays a weak front and back body image which inter alia is very superficial and possesses three-dimensional properties. Up to now it has been impossible to reproduce all its characteristics at the same time albeit several attempts were made in many laboratories. But lately, coloration similar to that of the Shroud has been imprinted on dry linen cloths with a powerful VUV...

Author(s): Giuseppe Baldacchini and Francesco Baldacchini

Piezonuclear neutrons from earthquakes as a hypothesis for the image formation and the radiocarbon dating of the Turin Shroud

July 2012

  Some researchers have suggested that corona discharge phenomenon or proton radiation is responsible for the Shroud body image formation, while neutron radiation is liable to a wrong radiocarbon dating. On the other hand, no plausible physical reason has been proposed to explain the radiation source origin, and its possible effects on the linen fibres. However, some recent studies, carried...

Author(s): A. Carpinteri, G. Lacidogna, A. Manuello and O. Borla

Particle radiation from the body could explain the Shroud’s images and its carbon dating

July 2012

  This paper highlights some of the main reasons why radiation caused the body images on the Shroud of Turin; why the source of this radiation was the body wrapped within it; that the radiation appears to be particle radiation; and that if particle radiation came from the body of the man in the Shroud, it could account for or explain all of the primary and secondary body image features, the excellent condition...

Author(s): M. Antonacci

A possible hypothesis for correcting the radiocarbon age of the Shroud of Turin

July 2012

  Three methods of calculation in Chemical Physics are used to study how the isotopic exchange could affect the radiocarbon age of the Shroud of Turin. The basic hypothesis is that a fire in the year 1532 caused an isotopic exchange reaction between the air and the fabric of linen. According to this model, molecules of carbon dioxide from the air exchanged isotopes  by isotopes  with the...

Author(s): Francisco Alconchel-Pecino

Digital image processing techniques demonstrating the anomalous nature of the radiocarbon dating sample area of the Shroud of Turin

July 2012

  This article reports on the use of digital image processing techniques to analyze an ultraviolet-fluorescence photograph of the area of the Shroud of Turin where the radiocarbon dating samples were taken. Results of this analysis demonstrate the anomalous nature of the radiocarbon data sample area. The techniques employed in this investigation are those used by the land remote sensing community for the...

Author(s): John M. Morgan, III

Skeletal bone age assessment from epiphysis/metaphysis of phalanges using Hausdorff distance

July 2012

  The work explains an efficient method for skeletal bone age assessment (BAA) from the epiphysis/metaphysis of phalanges using Hausdorff distance as the measure for classification. The method was based on the Tanner and Whitehouse (TW2) method of BAA. The system guaranteed accurate BAA for the age range 0-10 years for both male and female. The input image was initially preprocessed and 8 EMROI joints were...

Author(s): P. Thangam and K. Thanushkodi

An analytical approach to domain concept in Iranian traditional cities

July 2012

  Human need for comfort, tranquility, a sense of security and meaning in his life as well as respect for his domain by others and desirable settlement shall be made possible by way of obtaining proper trends in specifying private and public areas of his life and establishing accurate hierarchy in functional, and physical aspects. Analysis of this structure that we can find in Iranian traditional cities...

Author(s): Farah Habib

Estimating the size of Arabic indexed web content

July 2012

  Various initiatives designed to increase Arabic Web content have been undertaken in recent years, and now search engines are reporting that the Arabic portion of Web content has grown relative to the overall Web content. An accurate estimate of Arabic Web content is crucial for those interested in studying it and enriching it. In this paper, we propose a statistics-based system to estimate the size of Arabic...

Author(s): Abdulrahman Alarifi, Mansour Alghamdi, Mohammad Zarour, Batoul Aloqail, Heelah Alraqibah, Kholood Alsadhan and Lamia Alkwai

Electrochemical investigation and capacitance properties of a novel electrodeposited ordered mesoporous cobalt hydroxide films

July 2012

  The present work explored a novel, simple and low cost electrochemical route for the investigation of ordered mesoporous cobalt hydroxide films electrodeposited onto gold substrate from cobalt acetate in pluronic lyotropic liquid crystal (P84). This method produces thin films of cobalt hyhdroxid mesostructures on gold substrate by combination of potentiostatic and voltammetric electrodeposition techniques....

Author(s): Y. Obaid, I. S. El-Hallag, E. H. El-Mossalamy, A. O. Al-Youbi and A.M. Asiri

Mechanical assessment of artificial turf football pitches: The consequences of no quality certification

July 2012

  The aim of the study is to assess a sample of twenty artificial football turf pitches (3rd Generation) of the Spanish football league. 7 regulatory tests were conducted ‘in situ’ as presented in EN 15330-1:2007 and Fédération Internationale de Football Association (FIFA) rules. None of the pitches examined passed the 7 field tests of the certification...

Author(s): Pablo Burillo, Leonor Gallardo, José L. Felipe and Ana M. Gallardo

An epidemiological study on effect of air pollutants on respiratory morbidity in adults of a critically polluted city of northern India

July 2012

  Research into the health effects of air pollution is ongoing all over the world. This study aimed to assess the impact of air pollution on the respiratory disease in a critically polluted city of northern India. Air pollution has become a hazardous problem in India with an increase in urbanization, vehicle density and industrial smoke emission. Cross-sectional household survey was conducted in...

Author(s): Manoj Kumar

Performance simulations of Rayleigh Doppler lidar system for measuring middle atmosphere winds

July 2012

  Measurement of atmospheric winds in troposphere and stratosphere regions is an essential component in understanding atmospheric processes. However, providing stratospheric winds is difficult as the instruments like radars and lidars are complex. An incoherent Doppler lidar system with large telescope aperture and operating in visible wavelength is being developed to meet the objective. Simulations have been...

Author(s): Karnam Raghunath and S. Narayana Reddy

Indigenous African agriculture and plant associated microbes: Current practice and future transgenic prospects

July 2012

  Reliance on non-sustainable inputs of fertilizers and pesticides does not hold the answer to obtaining higher yields from sustainable cash as well as food crops grown in Africa. Hence, the use of transgenic plants/crops and plant growth-promoting microbes with the aim of increasing productivity is attractive. In most parts of Africa, the farmers work at a subsistence level, the prevalent...

Author(s): Olubukola O. Babalola and Bernard R. Glick

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,

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

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

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

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

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

Nonlinear analysis of frames composed of flexibly connected members with rigid end sections accounting for shear deformations

July 2012

  The behaviour of lintel beam-to-shear wall connections plays an important role in the analysis of shear walls with openings. A computer-based method was prepared for nonlinear frames comprised of lintel beams having fully rigid end sections flexibly connected to wide column members accounting for shear deformations. The analytical procedure employed stability functions to model the effect of axial force on...

Author(s): Halil Gorgun, Senem Yilmaz and Seval Sevgi Karacan

On the efficiency of some semi- and nonparametric kernel estimators in the modeling of binary response data

July 2012

  The semiparametric estimation procedure of binary response data is composed of two steps. In the first step, various semiparametric estimators are used for estimating the model parameters, whereas nonparametric regression type estimators are required in the second step to obtain the probability estimates dependent on the estimated model parameters in the first step. In this study, we have investigated the...

Author(s): Özge AkkuÅŸ, Serdar Demir and Hüseyin Tatlıdil

Jacobi doubly periodic wave solutions for three versions of Benjamin-Bona- Mahony equation

July 2012

  A variety of exact solutions for the Kadomtsov-Petviashvili- Benjamin-Bona-Mahony (KP-BBM) equation, nonlinear Zakharov-Kuznetsov- Benjamin-Bona-Mahony (ZK-BBM) equation and the generalized ZK-BBM equation are developed by means of the extended Jacobi elliptic function expansion method. Soliton and triangular periodic solutions can be established as the limits of Jacobi doubly periodic wave...

Author(s): M. A. Abdelkawy, M. A. Alghamdi and A. H. Bhrawy,

The effect of aging on the machinability of AA7075 aluminium alloy

July 2012

  In this study, machinability tests were performed on aged AA7075 aluminium (Al) alloy through single point turning method. Before the machinability tests, AA7075 Al alloy samples were aged at 180°C for 1, 6, 12 and 24 h. The machinability tests were carried out at various cutting speeds and the resulting sample surface roughness, cutting forces and thermal changes occurring on the cutting tool were...

Author(s): Hasan Kaya, Mehmet Uçar , Abdulkadir Cengiz, Dursun Özyürek, AhmetÇaliÅŸkan and Riza E. Ergün

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

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

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

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

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

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.

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

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

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.

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

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

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

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

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.

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

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

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

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

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.

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

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

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