The classical electrostatic image principle for a perfectly conducting object consisting of two orthogonally intersecting spheres is revisited through vector analysis. A method for finding the image of a given charge distribution by splitting it in three virtual singlesphere problems is described. Also, a simple relation between the image charges of a given point charge is found. The method is ...

The main purpose of this study was to identify and analyze factors affecting development of entrepreneurship in complementary and processing industries of citrus products at Khouzestan province, Iran. The Statistical population of this study consisted of all managers in processing and complementary industries of citrus products in Khouzestan province (N=89). By census method all managers were s...

Biofilm formation can lead to problems in healthcare, water distribution systems, food processing and packaging, industrial manufacturing, marine industries, sanitation. These microbial communities proliferate on biotic or abiotic surfaces, are responsible for human disease decreasing production efficiency service equipment life many fields. The of biofilm starts with the attachment bacteria su...

aseptic processing is defined as steril product filling in pre-sterilized containers followed by hermetic sealing in a sterile environment. aseptic processing and packaging has made great developments as a flexible and efficient technology for production of sterilizable products in food industries. in this study, the historical developments of the application form processing, sterilization of p...

Background & Aims: Shift work is programmed in various schedules, each has its own advantages and disadvantages. The main purposes of this study were: a) to determine common shift schedules used in petrochemical industries, b) to compare shift work health-related problems among employees working in different shift schedules and c) to recommend appropriate shift schedule. Methods: This cross...

Industrial Batch Polymerization System Zoltan K. Nagy, Ruediger Franke, Bernd Mahn, and F. Allgoewer Nowadays chemical and related processing industries are faced with the need of increasingly precise control of product properties to meet specific demands. It is recognized that nonlinear model predictive control (NMPC) is an excellent candidate as a key enabling technology for the continued suc...

OBJECTIVE Asthma is a common and costly public health problem. Occupational exposures contribute to the burden of asthma. Identifying workplace exposures and industries and occupations at risk can lead to more effective prevention measures. METHODS Data from Washington State's work-related asthma (WRA) surveillance program from October 2001 to December 2008 were analyzed. Workers' compensatio...