the effects of dietary nucleotide (nt) were evaluated on some serum biochemical parameters and acute stress responses of the catfish (pangasianodon hypophthalmus). five experimental diets including 0, 0.25, 0.5, 0.75, and 1% nt were supplied to catfish fry for 10 weeks. at the end of the experiment, fish fed the control and 1% nt diets were subjected to handling and crowding stress. the results...

chemotherapy medication errors may lead to potentially harmful consequences while most of them could be preventable. this study aims to determine the incidence and type of drug handling and administration errors among the nurses and to identify possible contributing factors. setting of the study was a teaching hospital affiliated to shahid beheshti university of medical sciences, tehran, iran. ...

Abstract Handling robots are widely used today, and non-fixed handling is more effective than fixed in some specific scenarios. The of can increase the load reduce precise positioning process grabbing object, but velocity relatively slow for stability object. In addition, it needs to consider friction reaction force constraints on This paper proposes a high-velocity method robot. First, deduces...

OBJECTIVE The objective of this study was to evaluate the relative contribution of individual characteristics, lifestyle factors, work-related risk factors, and work ability on the occurrence of short (<2 weeks), moderate (2-12 weeks), and long (>12 weeks) durations of sickness absence. METHODS Altogether 5867 Dutch construction workers with complete sick leave registration were followed from...

The paper presents an innovative prehensor developed within the European project EUROShoE. This prehensor enables multi-point grasp, firm hold and a gentle transfer of limp items. It is the end-effector of an high speed manipulator, acting in co-operation with other manufacturing units. Shoe and clothing industries, aiming today at a dramatic renovation of the concept of the goods from mass pro...

This paper models, analyzes, accommodates and simulates potential failures which may occur in a materials handling system with Extended Petri nets (EPNs). EPNs are shown to be able to cope with various important failure situations that occur in a manufacturing system through the definition of six different types of places. Detailed EPN based subnets are provided to study and accommodate occurre...

OBJECTIVE We studied the relation between dynamic (isokinetic) strength and the batch-assorting strategy to initiate a manual materials-handling task and the effect of knowledge of strength on that relation. BACKGROUND The debated, complex relationship between muscular strength and the risk of injury can be better understood from a behavioral perspective by examining performance strategies in...

A field robot is defined as one that executes tasks while moving around in a dynamic environment where structures, operators and equipments are constantly changing. The basic elements of a field robot consist of a mobile platform for executing a particular operation in a dynamic environment, sensors and intelligence technology to recognize and cope with barriers in the routes in which they move...

A new approach to sample handling for powder X-ray diffraction analysis is presented that allows characterization of poorly prepared samples. The technique relies on vibrations generated in a sample holder to create movement of the powdered sample in the absence of macroscopic movement of the sample holder itself. The major benefits over conventional sample handling strategies are: 1) the abili...