November 2011
Promotion of household renewable energy technologies in rural communities: Challenges and experiences in Sub-Saharan Africa
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...
November 2011
Life cycle impact assessment (LCIA) using EDIP 97 method: An analysis of potential impact from potable water production
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...
November 2011
Power system damping using GA based fuzzy controlled TCSC device
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...
November 2011
Anomaly detection and prediction of sensors faults in a refinery using data mining techniques and fuzzy logic
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....
November 2011
A novel shape optimization method using knot insertion algorithm in B-spline and its application to transonic airfoil design
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...
November 2011
Implications of environment regulations on industrial development, under the conditions of adopting the EU-ETS scheme in Romania: An analysis
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...
November 2011
Protection of an archaeological site: A case study of Chiremba balancing rocks, Epworth, Harare, Zimbabwe
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...
November 2011
A comparative analysis of the virtual reference stations (VRS)
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...
November 2011
The role of sulphur dioxide and gas flare particulates on the corrosion of galvanized iron roof sheets in south-south region of Nigeria
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...
November 2011
Evaluation of methylation status in glutation S-transferase P1(GSTP1) gene promoter in human breast cancer and its relation to tumor grade and stage
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...
November 2011
The use of factorial design for proliferation assay of hFOB cells on different TiO2 nanotube arrays
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...
November 2011
Vegetative induced ground displacements: a comparison of numerical and experimental study
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...
November 2011
The effect of extracted bacterial LPS from Salmonella enteritidis on COX-2 in hepg2 cell line in induction and inhibition conditions
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...
November 2011
Definition and prioritization of electronic solutions affecting environment: A case study on air pollution of Tehran
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...
November 2011
A rule-based system for fixture design
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...
November 2011
Barriers to mammography among women attending gynecologic outpatient clinics in Tehran, Iran
The aim of this study was to understand barriers to mammography among women attending obstetric and gynecologic outpatient clinics. Women at 4 obstetric and gynecologic clinics affiliated to Tehran University of Medical Sciences in Tehran were invited to participate in a cross-sectional survey with self-administered questionnaire and divided into two groups. The participant group consisted of women who had mammogram in...
November 2011
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
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...
November 2011
Aboveground biomass and productivity of nitrogen-fixing tree species in the Philippines
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...
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