This study investigated the effect, on reactor performance and biomass retention inside the bed, of the material used to make the supports of anaerobic fixed-bed reactors. Three inert supports of similar shape but made of three different materials polyvinyl chloride, polypropylene, high-density polyethylene were manufactured and used. All three supports had the same specific surface area but di...

BACKGROUND This study aims to determine the nature of United States Institutional Review Board (IRB) policy in a broad spectrum of research settings regarding the return of results to study participants. METHOD IRB policies or standard operating procedures of 207 Medical School, Industry and Non-medical School IRBs were examined on-line to determine if they incorporated specific reference to ...

Over the past few years, we have witnessed a paradigm shift on the programming models and on architectural styles, which have been used to design and implement large-scale service-oriented systems. More specifically, the classic message-oriented and remote procedure call paradigm has gradually evolved to the resource-oriented architectural style, inspired by concepts pertinent to the World Wide...

Background : Medical Laboratory plays a critical role in maintaining and promoting health. Increasing wide applications of laboratory medicine in clinical practice have highlighted specific topics in the areas of social, professional and ethical issues in the laboratory. Despite the important role of clinical lab in health system, ethical issues have been rarely discussed for clinical labs. Con...

Utilizing the gathered failure data and failure interval data from Tabas coal mine in two years, this paper discusses the reliability of powered supports. The data sets were investigated using statistical procedures and in two levels: the existence of trend and serial correlation. The results show that the powered supports follow the Gamma reliability function. The reliability of the machine de...

by appearance of human societies, the spiritual needs of different individuals and societies to worship the creator and to donate in order to attain the health and to fulfill the wishes had caused them to erect the specific places for offering the sacrificial materials. this article is generally a brief study on the places to donate and offer the sacrificial materials to sacred places regarding...

Abstract Introduction As direct-to-consumer telemedicine (DTCT) companies increase virtual services for gender affirming medical therapy, examination of platform practices is essential to ensure the field’s standard care being met and cost-effective offered. This especially important considering reduced access potentially increased vulnerability gender-diverse population. Objective We aimed des...