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locomotive wheel slip in railway transport is a very actual problem for operation process especially on the main tracks and tracks between industrial oil company and power- generating stations, which always need to supply by oil products. This res earch included the conclusion of the reasons leading to the occurrence of the event wheel slip as well as study the technical reality of the work of sand management system in the locomotives and conduct analyzes and assessments of the substance sand used to overcome such situation with the suggestion of suitable alternatives to raise the adhesion coefficient between the railway wheels and improve an operating circumstances animation tools Line. Other causes include the contact of oil with the flanges and rims of wheels, which reduces adhesion with the surface of the rails, and a general loss of traction on steep gradients when pulling heavy loads.
Widespread use of chemotherapy in the treatment of cancer has lead to higher health hazards among nurses who handle and administer such drugs, so they should know how to protect themselves from effects of chemotherapy. Objective of study was to ass ess knowledge and practices of nurses for safe handling chemotherapy in latakia City. the data was collected by using questionnaire including demographic information and safe handling chemotherapy knowledge and practices and barriers of personal protective equipment . Results of this study showed there more than two to third of nurses had no knowledge that chemotherapy enter the body through contaminated foods, about practices of them more than three quarter didn't change of personnel protective barriers after contact with chemotherapy. also Results showed there a significant negative association between knowledge and practices. Moreover, It is showed there a significant negative association between practices and barriers .Most of the study sample had moderate level of knowledge and practices of safe handling chemotherapy. So it is necessary that Chemotherapy Safety health education program should be instituted for all oncology nurses who are working in oncology unit.
The main goal of maintaining and repairing equipment and machines during the investment stages is to reduce the amount of money spent in order to maintain the validity of their operation and the quality of their reliability under the different give n investing conditions (type of manufacturing materials, methods used, temperatures, nature of investment, …. etc). This goal can be achieved if we are able to control changes in the technical conditions of equipment and the frictional parts during the investment stages, besides knowing the physical laws/rules that govern the technical changes properly. Therefore, we carried out a study on the theoretical plans of physical wear of brakes and the frictional parts in means of transportation. This is done starting from wet (oily) wear plans of the frictional parts in machines. Then, based on these plans we studied physical laws/rules determining the intensity of dry wear of brakes, along with its speed and acceleration during the investment and the unreliable, uneconomical (unsafe) operation stages, taking into consideration the methods used in periodical technical maintenance, ways of driving, and the average number of times brakes are used…etc . Based on these formulas obtained, we can estimate/predict the start of ineffectiveness of brakes and friction linings, in addition to the inception time of risky (unreliable) operation stage. Consequently, this stage gives us indications for replacement or treating with the traditional (known) mechanical and chemical ways, in light of the soaring prices of materials in the Syrian Arab Republic.
The study seeks to determine the real time in electrical power system, which consists of generating, transmitting and distributing equipment by using redistributing active power of electrical generators in order to organizing the overload operation of electrical power transmission line loading in such case that the spare loads of electrical station are not covering the important and necessary loads at failures. The most of laws related to electrical power systems design indicated to proper ratio of real time of electrical power system equipment along with characteristics of probability distributed functions in addition to statistics methods which give a high possibility to reduce the real time of considered loads; so; this leads to the requested solutions which reduce the damage of failures at any time.
Emergency cases can occur anytime, anywhere and to anyone. Such situations are somewhat more likely to occur within the confines of the dental office due to the increased level of stress which is so often present. This study aims to determine the readiness and the interest of dental clinic for the management of such cases.
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