This study investigated the effects of doping on the etching of SiO₂ and in particular on the etched edge (parts). We have modelized and optimized using experimental data the etching rate of SiO₂. The effects of temperature and oxide nature are factors taken into account in the modelization. The optimization of temperature permits to define the ideal temperature to be used in order to approach anisotropy and to permit repeatability to the etching process in industry. The mo...

Electric Engineering  Chemical Engineering & Technology 

Selective methods of thermocatalytic determination of carbon oxide and hydrocarbons in exhaust gases of vehicles are based on measurement of different thermo effects of oxidation of a combustible mixture, obtained from two identical thermosensible elements working at different temperatures are developed. At one temperature there is an oxidation of all analyzed gas mixture, and on another—the mixture without a selectively determined component and by the difference of thermo effects an exact conce...

Environmental Chemistry  Thermochemistry  Green Chemistry  Electrochemistry  Analytical Chemistry  Atmospheric Chemistry 

Model learning is the process of extracting, analysing and synthesising information from data sets. Graphical models are a suitable framework for probabilistic modelling. A Bayesian Network (BN) is a probabilistic graphical model, which represents joint distributions in an intuitive and efficient way. It encodes the probability density (or mass) function of a set of variables by specifying a number of conditional independence statements in the form of a directed acyclic graph. Specifying the str...

Network Modeling and Simulation  Mathematical Statistics 

Scientific computation and data intensive analyses are ever more frequent. On the one hand, the MapReduce programming model has gained a lot of attention for its applicability in large parallel data analyses and Big Data applications. On the other hand, Cloud computing seems to be increasingly attractive in solving these computing problems that demand a lot of resources. This paper explores the potential symbiosis between MapReduce and Cloud Computing, in order to create a robust and scalable en...

Big Data Search and Mining  Cloud Computing 

Asthma is a chronic inflammatory disease of the airways manifested by reversible airflow obstruction and airway hyperresponsiveness. While recent research has mapped several genes as possible factors predisposing to asthma, interleukin-13 remains one of the most commonly found genes in various populations. IL-13 is a pleiotropic TH2 cytokine which has been linked to cause an increase in goblet cell differentiation, activation of fibroblasts, elevation of bronchial hyperresponsiveness and s...

Women’s Health  Medical Genetics 

The present study aimed to investigate emotional state in terms of depression, anxiety, well-being, body image and social withdrawal in dermatological patients. Additionally it also focuses on investigating the relationship of emotional states and psychological well-being of dermatological patients. Emotional state scale for dermatological patients (ESS-D) by Samina Bukhari 2000 and psychological well-being scale affector-2 by Naheed in Urdu 1997 were used to assess the emotional states and psyc...

Psychology 

Background: The aim of this study was to estimate the proportion of stomach cancer and to determine linked risk factors. Methods: A retrospective study on available data in three oncology centers was performed. Random systematic selection was conducted among all patients registered over four years (2008-2011). Results: A total of 1145 cancer cases were included. Stomach cancer was more prevalent in men (sex ratio M/F = 2.5). This cancer was significantly more frequent in the age group between 51...

Public Health  Epidemiology  Oncology 

Tissue-type Plasminogen Activator (tPA) is a serine protease produced by endothelial cells. They target plasminogen, an inactive precursor of plasmin and convert the plasminogen into active plasmin, which degrades the fibrin component of thrombus to aid in dissolution of blood clots. Hence tPA is commonly used in treatment of acute Ischemic stroke in the form of recombinant tissue plasminogen activator (rtPA). rtPA is produced using recombinant technology from different types of vectors dependin...

Genetics  Bioengineering 

The first investigation and analysis of 59Co 2D NMR homonuclear chemical shift correlation spectra for a ruthenium-based tetrahedral mixed-metal cluster HRuCo3(CO)11(PPh3) are reported. For this cluster in solution and by contrast to the conventional COSY NMR experiment, the double-quantum filtered (DQF) COSY NMR spectrum proves the existence of a scalar coupling constant between 59Co nuclei. In order to obtain a value of this coupling, the 2D COSY spectrum for a three-spin 7/2 AX2 system has be...

Computational Chemistry  Inorganic Chemistry 

Background: At household levels drug may be hoarded and re-utilized inappropriately, shared within families and/or outside family and unnecessarily utilized in self-medication. Therefore this study was conducted to assess drug utilization at household level in Nekemte town and surrounding rural areas western Ethiopia. Methods: It was conducted on 844 households’ head through in-terviewing where households were stratified into urban and rural; a household was selected by using systematic random a...

Pharmacology  Drugs & Devices  Epidemiology  Evidence Based Medicine  Health Policy  Global Health