Obtaining soil stiffness using WAK test and numerical methods
November 2011
A study has been undertaken at musicale in the laboratory to simulate the densification of a sandy soil bed by dynamic compaction. This was achieved by allowing a tamper mass of 875 g to fall through 100 mm onto a stiff aluminium target having a mass of 268 g and a diameter of 100 mm. Since the frequencies generated by this process are very low, the dynamic stiffness derived approximately the static value...
Proposed methodology to enhance C4I systems security on architectural level
November 2011
Command control, communication, computer and intelligence (C4I) systems are the back bone complex information and communication systems for modern information warfare (IW). Managing security in C4I systems is a challenge due to complexity and criticality of these systems. This paper elaborates design methodology to incorporate security in the C4I systems in systematic and consistent way instead of patching...
Three body abrasive wear of X12CrNiMo martensitic stainless steel laser alloyed with TiC
November 2011
Martensitic stainless steels (MSSs) are often used for applications that require high wear resistance and hardness. A laser multi-track overlapping process was employed to fabricate TiC-reinforced metal matrix composite (MMC) coatings on X12CrNiMo steel substrate using a 4.4 kW continuous wave (CW) Nd: YAG laser. 50 and 75% overlap were produced. Comparative studies of the three-body abrasive wear...
Effects of layer arrangements on bending strength properties of laminated lumber made of poplar (Populus nigra L.)
November 2011
In this study, the effects of layer arrangements on bending properties of laminated wood products have been investigated. Poplar (Populus nigra L.) and polyvinyl acetate (PVA) were used as wood and adhesive, respectively. Bending static properties (MOE and MOR) of laminated products comprising various combinations of layer arrangements resulting in 5 combinations were measured. The results of this study...
Technical efficiency and meta-technology ratios of regional firms in Bangladesh: A stochastic meta-frontier model
November 2011
We examined the relative influence of preference of a stochastic metafrontier model to evaluate the technical efficiencies and meta-technology ratios of firms that may be classified into different regions but not have the same technology. The empirical application of the model used panel data set of six different regional firms in Bangladesh. We observed low mean technical efficiency scores 17.7%, 15.9, 13.4...
In-vitro anti-bacterial activities of crude n-hexane extracts of Garcinia kola (Heckel) seeds against some Vibrio bacteria isolated from wastewater effluents
November 2011
Crude n-hexane extracts of the seed of Garcinia kola were screened for their in-vitro anti-Vibrio activities against 50 Vibrio bacteria isolated from wastewater final effluents in the Eastern Cape Province of South Africa. The extract at a screening concentration of 10 mg/ml resulted in zones of inhibition ranging from 10 to 14 mm against the susceptible isolates and the...
Analysis of possibility for traffic safety improvement based on Serbian traffic violation database analysis
November 2011
In order to improve traffic safety, both reactive and proactive approaches are used. Unlike the reactive, the proactive approach ’does not wait’ for traffic accidents to happen to start analysing traffic safety conditions. The proactive approach implies traffic safety improvement based on the analysis of so-called indirect traffic safety indicators, like the behaviuor of traffic participants, and...
Investigation of flow and vacuum lifting force on a non-contact end effector for robotic handling of non-rigid material
November 2011
This study identifies the need for a new range of end effectors suitable for non-rigid products and introduces a novel non-contact gripping device. The end effector operates on the principle of generating a high-speed fluid flow between the end effector and product surface thereby creating a vacuum which levitates the product. The lifting forces and conditions are discussed by using optimization methodology...
Mobile data collector based routing protocol for wireless sensor networks
November 2011
In the era of New Generation Networks (NWGN) many emerging and future enable technologies accomplish the requirements of ubiquitous communication networks. Mobile wireless sensor network (mWSN) is one of the rising and emerging technologies for various application of NWGN, the enormous concerns of these networks are data gathering with energy efficiency. Routing protocol act as middleware, which is...
Impact of the new road traffic safety law on the number of traffic casualties in Serbia
November 2011
In this research the analysis of the impact of the new road traffic safety law (new RTSL) in Serbia to the decrease of the number of killed in traffic accidents in Serbia is shown. The effects of a new legislation and larger enforcement made by new RTSL implementation to the decrease of the number of killed and injured in traffic have been analysed by comparing the number of killed and injured in traffic in...
Preparation, characterization and adsorption performance of the KOH-activated carbons derived from kenaf fiber for lead (II) removal from waste water
November 2011
In this study, activated carbon was prepared from kenaf fiber (KF) by using physiochemical activation method consisting of potassium hydroxide (KOH) impregnation with carbon dioxide (CO2) gasification. Pore structure and physical characteristics of the prepared activated carbon were determined. Adsorption studies for divalent lead (Pb) were carried out to delineate the effect of contact time,...
A comparative study for electricity generation in microbial fuel cell reactor with and without mediators
November 2011
A microbial fuel cell (MFC) reactor with two compartments has been constructed from cheap materials and used for electricity generation from artificial mineral glucose medium (MGM) and test the adding or not adding the mediators during four separate experiment. The maximum voltages yield at external resistance 30 Ω on the mediator - less experiments was 401 mV, while when the mediators have been methylene...
Flow injection spectrophotometric and spectrofluorimetric methods for the determination of candesartan cilexetil in pharmaceutical formulations
November 2011
This article describes the development of flow injection methods for the determination of Candesartan Cilexetil using spectrophotometery and spectrofluorimetry in pharmaceutical formulations. The first method is based on the UV absorption at 270 nm in phosphate buffer containing cetyl trimethylammonium bromide (CTAB) and methanol at pH 6.5. The second method based on the fluorescence excitation and...
Co-integration analysis on all-variety Boro rice yields
November 2011
The Boro rice is one of the most important rice in Bangladesh. It has three varieties namely: high yielding, local and Pajam. The all-variety Boro rice yield of Rajshahi and Rangpur districts have been selected for the period from 1985 to 2007 to measure the relationship between them. Our study shows a cointegrating relationship exist between the yields. The speed of adjustment coefficient of the error...
FPGA implementation of elliptic curve cryptography engine for personal communication systems
November 2011
Elliptic Curve Cryptography (ECC), which allows smaller key length as compared to conventional public key cryptosystems, has become a very attractive choice in wireless mobile communication technology and personal communication systems. Any cryptosystem requires a very quick computation in very short time to get an optimal efficiency. One of the options could be to implement the overall cryptosystem into FPGA...
The effect of semi-solid processing parameters on microstructure in Al-7wt.%Si alloy
November 2011
In the present work, the effect of temperature and pressing time on the microstructure of a Al-7wt.%Si alloy was studied. Al-Si specimens were prepared by pre-shaping powder obtained with mechanical processing from Al-7wt.%Si alloy produced with ingot metallurgy under 800 MPa pressure. The prepared specimens were subjected to semi-solid processing at 100 MPa pressure and at different temperatures (580, 590...
A new adaptive model for throughput enhancement and optimal relay selection in IEEE 802.16j MMR networks
November 2011
Network deployment problem is one of the major issues when base stations and relay stations are jointly deployed. Deploying relay station at suitable position covers throughput enhancement and coverage extension problem in IEEE 802.16j MMR networks. In this paper we have proposed a new adaptive model for throughput enhancement and optimal relay selection in IEEE 802.16j MMR networks and studied about the...
Evaluation of bone mineral density in hyperprolactinemic patients treated with dopamine agonists
November 2011
The purpose of this study is to evaluate the bone mineral density (BMD) of hyperprolactinemic women after at least one year treatment with dopamine agonists. A total of 24 patients and 24 healthy control women (mean age of 33 ± 8 and 33.8 ± 0.8 years, respectively, P = 0.74) were participated in this study. Measurement of fasting serum prolactin and estrogen level in the follicular phase was carried out...
Aboveground biomass and productivity of nitrogen-fixing tree species in the Philippines
November 2011
Aboveground biomass and productivity traits of two nitrogen-fixing exotic species (Acacia auriculiformis A. Cunn. ex Benth. and Acacia mangium Willd.) and one nitrogen-fixing native species (Pterocarpus indicus Willd.) were compared in this study using 10 and 20-year-old age classes. Parameters measured were stand density, basal area, importance value index, aboveground biomass and carbon, annual...
Effect of irrigation regime and method of strip irrigation system on yield, yield components and water use efficiency of cotton under drought stress conditions of Orzouiyeh region of Kerman province in Iran
November 2011
Deficit irrigation is one of the most important methods of management of irrigation to save irrigation water without much damage to plants. Field experiment was conducted in 2010 to study the effect of irrigation deficit and method of irrigation on yield and yield components and water use efficiency of cotton in Orzouiyeh region of Kerman province of Iran. Treatments consisted of three levels of water...
A rule-based system for fixture design
November 2011
Modern market imposes stringent demands regarding the product quality/price ratio, with an ever decreasing time-to-market. Furthermore, products are increasingly manufactured in small batches and high varieties, which requires flexibility not only from manufacturing system but the entire manufacturing process. Such demands require manufacturing systems which are highly automated in the domain of preparation and...
Definition and prioritization of electronic solutions affecting environment: A case study on air pollution of Tehran
November 2011
Air pollution caused by highway traffic is one of the major problems of Iran’s capital, Tehran. Application of modern electronic systems and devices can reduce or even cut urban travels and the air pollution caused by vehicles. In this study, the main objective is to propose a pattern to prioritize electronic solutions (e-solutions) based on the respective air pollution reduction caused by each solution. After the...
The effect of extracted bacterial LPS from Salmonella enteritidis on COX-2 in hepg2 cell line in induction and inhibition conditions
November 2011
Hepatocellular carcinoma is the fifth most common neoplasm and the most important cause of death in patients with liver cirrhosis in the world. lipopolysaccharide (LPS) stimulates the hepatocyte cells and increases the production of inducible cytokine with the high production of nitric oxide and ROS. Chronic inflammation caused by lipopolysaccharide directly activates immune system and indirectly, through COX-2...
Vegetative induced ground displacements: a comparison of numerical and experimental study
November 2011
A volume change was modeled as a result of matric suction change caused by vegetative induced moisture transfer. Theory of unsaturated soil mechanics and two stress state variables principles approach was used in the stress-deformation model. The negative pore-water pressures are estimated through governing partial differential equations for unsaturated soils. The results of the root water-uptake analysis are then used...
The use of factorial design for proliferation assay of hFOB cells on different TiO2 nanotube arrays
November 2011
The ordered TiO2 nanotubes on titanium substrate were fabricated by anodization. The nanotubes are well aligned and organized into uniform arrays. The effects of anodization voltage on the oxide layer of morphology were investigated. The average diameter pore size is 20 and 88 nm at 5 and 20 V, respectively. In surface wettability, these TiO2 nanotubes showed hydrophilic behavior by sessile drop technique. In...
Evaluation of methylation status in glutation S-transferase P1(GSTP1) gene promoter in human breast cancer and its relation to tumor grade and stage
November 2011
Glutation S-transferase P1 (GSTP1) gene methylation in promoter CpG islands has been described as a specific biomarker for many types of cancer including breast cancer as a tumor suppressor gene. At the present study we found that the GSTP1 gene promoter to be methylated in breast cancer tissues. For studying the difference of sequence in hypermethylated GSTP1 promoter in cancer tissues and non methylated status in...
The role of sulphur dioxide and gas flare particulates on the corrosion of galvanized iron roof sheets in south-south region of Nigeria
November 2011
The failure of galvanized iron roofs is one of the problems suspected to be associated with environmental pollution in the south- south region of Nigeria often called Niger Delta. In this study, two parameters, sulphur dioxide and particulate matters linked to gas flaring were examined in an outdoor exposure test to determine their relative contributions to the corrosion impact. The experiment involved the exposure of...
A comparative analysis of the virtual reference stations (VRS)
November 2011
The concept of network Real Time Kinematic (RTK) method has enlarged the possible applications of precise positioning. While other network concepts are available, virtual reference stations (VRSTM) is by far the most popular choice for the nationwide networks. On the other hand, the available Network RTK methods are frequently questioned due to their location-dependent nature. This study introduces Turkish RTK Network...
Protection of an archaeological site: A case study of Chiremba balancing rocks, Epworth, Harare, Zimbabwe
November 2011
Chiremba balancing rocks, Epworth, Harare, Zimbabwe was declared a national monument in 1994 on the basis of its unique physical rock formations, magnificent scenery and archaeological and scientific richness, comprising a rich corpus of biodiversity and rock paintings. Both direct and indirect human impacts leading to different levels of degradation or even destruction of this archaeological site have been witnessed in...
Implications of environment regulations on industrial development, under the conditions of adopting the EU-ETS scheme in Romania: An analysis
November 2011
The growing interest in limiting the negative effects of pollution on the European level led to the development and implementation of a European mechanism, beginning with 2003, voluntarily assumed by all the member states aiming at reducing the greenhouse gases, besides the mechanism required by the Kyoto Treaty. The effects of this mechanism on the industry development inside the community as well as on each member...
A novel shape optimization method using knot insertion algorithm in B-spline and its application to transonic airfoil design
November 2011
A new method using the cubic B-spline curves with nominal uniform knot set to parameterize the geometry is proposed to deal with shape optimization problems. In the method, the control points of the B-spline curves are set to be the design variables in the optimization scheme. A knot insertion algorithm has been introduced in order to keep the geometry unchanged whilst increasing the number of...
Anomaly detection and prediction of sensors faults in a refinery using data mining techniques and fuzzy logic
November 2011
Like all manufacturing companies, refineries use many sensors to monitor and control the process of refining, therefore it is very crucial to detect any sensor faults or anomalies as early as possible, and to be able to replace or repair a sensor well in advance of any fault. Objective of this paper is to present a method for detecting anomalies in a sensor data, as well as to predict next occurance of a sensor failure....
Power system damping using GA based fuzzy controlled TCSC device
November 2011
In introduction, this paper investigates the application of TCSC hybrid controller for improving damping inter-area modes of oscillations. The proposed controller comprised fuzzy logic proportional and derivative controller with the conventional proportional and integral controller (FUZZY PD + PI) turn by genetic algorithm techniques. Approaching the proposed control scheme implements the characteristics of the...
Life cycle impact assessment (LCIA) using EDIP 97 method: An analysis of potential impact from potable water production
November 2011
Life cycle assessment (LCA) is a method to analyze a particular product or service; from the beginning of the process it is extracted until it is no more in use or much to be known as ‘cradle to grave analysis’. The LCA analysis includes collection of inventory that is all types of emissions and also waste products. After that, this inventory would be translated or transformed to show the impact on...
Promotion of household renewable energy technologies in rural communities: Challenges and experiences in Sub-Saharan Africa
November 2011
It has been recognised that renewable energy technologies have an important role to play in an effort to achieve sustainable livelihoods and socio-economic development in rural communities. Several technologies ranging from wood/charcoal stoves, bio-gas digesters to solar photovoltaic’s for electricity generation are used in households and rural communities in the Sub-Saharan Africa. This paper highlights the...
Proposed design of anaerobic wetland system for treatment of mining waste water at former tin mining catchment
November 2011
This research provides an approach for designing a constructed wetland system for treatment of tin contaminated wastewater from mining catchment. Initially, physico-chemical characteristics and concentration of heavy metals in the soil and ponds were evaluated. It was found that the soil and water quality of the area is highly degraded. This study will help for the design of the wetland for...
Evaluation and analysis on profitability – Efficiency in hospitals affiliated with the ministry of health
November 2011
Measuring performances of the hospitals under Ministry of Health is a must for the efficient use of the resources. To serve this purpose, data envelopment analysis, capable of measuring relative effectiveness of decision units by processing more than one input and output, has been used. By means of data envelopment analysis technique, we have aimed to use the resources efficiently. For this reason, the model...
Sensitivity of Schur stability of systems of linear difference equations with constant coefficients
November 2011
In this work, sensitivity of the Schur stability and the -Schur stability of linear difference equation systems with constant coefficients have been investigated, and new results on the sensitivity problem have been given. The results have applied the scalar-linear difference equations with order and supported with numerical examples and also compared with the existing ones in the...
Acute, subacute toxicity and cytotoxicity of Chrysophyllum perpulchrum
November 2011
The total methanolic extracts of Chrysophyllum perpulchrum were used for toxicological (acute and subacute toxicity) and cytotoxicity studies. The experiment focuses on Swiss mice acclimatized in the animal cages at the University of Cocody-Abidjan. Each cage contains five mices of the same age (6 to 8 weeks), in much the same weight (20 ± 0.5 g) and same sex (male or female). The extract...
Alteration of bus routes in large-scale networks
November 2011
Route assignment and scheduling of buses are critical in network utilization and modification of bus routes should seek more efficient methods for operation. Ineffective operations would increase the average travel time and therefore decrease the level of service which yields increase in social cost. This paper presents an alteration method for increasing the efficiency of bus networks considering the...
InP-based multi-quantum-well mole fraction variation effects on a double wafer-fused GaAs/InP LW-VCSEL
November 2011
We analyze the effects of the mole fraction variation of III-V heterostructures employed as the active region in an InP-based multi-quantum-well (MQW), long-wavelength vertical-cavity surface-emitting laser (LW-VCSEL). The VCSEL model which utilizes an air-post design for electrical current confinement is equipped with GaAs/AlGaAs and GaAs/AlAs top and bottom distributed Bragg reflectors(DBR) mirrors...
A study on thermal and electrical properties of high density polyethylene/high density polyethylene grafted maleic anhydride/ montmorillonite/ polypyrrole blend
November 2011
Conducting polypyrrole (PPy) was synthesized by chemical polymerization method. The synthesized PPy was characterized by Fourier transform infrared spectrometer (FTIR) and its conductivity was measured by a resistometer. Then, PPy was incorporated into high density polyethylene/montmorillonite nanocomposites. PPy concentration varied in the range of 5 to 20% by weight in nanocomposites using melt mixing...
The investigation of dynamic performance of induction generator in different operational conditions and improving its behaviour using proper FACTS devices
November 2011
The object of this paper is to study the possibility of using of SVC and STATCOM in order to improve dynamic performance of induction generator. Also, these two devices have been compared with each other. Induction generators have many advantages in small wind-hydro power plants. On the other hand arising some problems including controlling of voltage and frequency oscillation due to dynamic oscillation of...
Dynamic stratigraphy of upper cretaceous in Northwest zogros (Kermanshah)-Iran
November 2011
Kermanshah is part of the structural zone of autochtone Zagros in the boundary of Arabian and Iran plates. Stratigraphy sequence of upper cretaceous in two structural blocks of Kouh-e-Sefid in south and Kouh-e-Nesar in southwestern of Kermanshah up to Campanian stage was observed as similar sequence. There is a function of existing faults in area with distinct sedimentary condition in every block...
Osteoma orbitalis: A case report and literature systematic review
November 2011
Orbital osteoma is a very rare benign tumor in orbit, and its diagnosis and treatment were certain particularity. Therefore, we reported one case of osteoma orbitalis and reviewed relevant literature, in order to further understand clinical features of osteoma orbitalis. A 38-year-old female was hospitalized due to left exophthalmos after frontal trauma for 5 years. Physical examination: left exophthalmos...
Prediction of nickel-based super alloy surface roughness in CNC end milling operation using connectionist models
November 2011
This paper outlines a comparative study of different Artificial Neural Network models and ‘adaptive-networks-based fuzzy inference systems’ approach for predicting the surface roughness (Ra) using cutting speed (v), feed rate (fr) and cutting depth (d) when machining Nickel-based super alloys with uncoated carbide tool under milling conditions. Nickel-based super alloys are generally known to be...
Microsatellite gene diversity within Philippines dwarf coconut palm (Cocos nucifera L.) resources at Port-Bouët, Côte d’Ivoire
November 2011
Description and assessment of genetic resources are common preoccupations for their better management and utilization in breeding program. Progress made to date is still limited in view of assessment of coconut resources in the International Coconut Genebank for Africa and Indian Ocean (ICG-AIO) at Marc Delorme Port-bouët experimental station in Côte d’Ivoire. Using twelve microsatellite...
Evaluation of the effect of nanohydroxyapatite on erosive lesions of the enamel of permanent teeth following exposure to soft beer in vitro
November 2011
Consumption of carbonated acidic beverages is the main etiological factor in dental erosion. Studies have shown that nanohydroxyapatite has the potential to remineralise primary carious lesions. This experimental study was carried out on 18 permanent teeth. Following measurement of the primary micro hardness value of each tooth, the teeth were immersed in 40 ml soft beer, followed by measurement of secondary...
A critical review of nonlinear fuzzy multiple time-delay interconnected systems using the Lyapunov criterion
November 2011
This paper reviews the development of fuzzy systems and the problem of time delay control in nonlinear systems. Based on this review, a fuzzy Lyapunov method defined in fuzzy blending quadratic Lyapunov functions is proposed from which to derive stability conditions. In the controller procedure, a parallel distributed compensation (PDC) scheme is utilized to construct a global fuzzy logic controller (FLC) by blending...
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