فهرست مطالب

پژوهش های نوین علوم مهندسی - پیاپی 23 (فروردین 1398)

ماهنامه پژوهش های نوین علوم مهندسی
پیاپی 23 (فروردین 1398)

  • ویژه نامه مقالات انگلیسی
  • تاریخ انتشار: 1398/02/01
  • تعداد عناوین: 4
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  • Bahador Dejagah*, Matin Hossinzadeh Pages 1-5
    Needling is one of the challenges that dialysis patients are facing with, for which selection of an appropriate method and speed of work is of high importance. At the end of dialysis process, when nurse begins withdrawal of the needle, she/he has to be careful so that the blood vessel in puncture site may not bleed. The work has to be done with speed and care. Correct performance of the procedure is of great help to patients, and also nurses working in dialysis ward. This may result in feasible stoppage of bleeding, and prevention of probable infections. The study aims at design and manufacture of a device to stop bleeding after withdrawal of needle from hand of dialysis patients, after the end of hemodialysis process. As you may know, after needle removal, the injection site has to be pressed for a certain time period (about 15 minutes) with a pressure more than blood pressure inside the vessel so that bleeding would be stopped, and not continued upon removal of pad. The process is currently done by patients themselves, persons accompanying them, or nurses. To make the process mechanized, we are intended to make a device. This way, time and quality of the procedure will be improved; and, safety against infection probability would be assured. In introduction section, an overview of the research importance and history has been made. In the research method section, an introduction has been made to the method applied, and its advantages. Eventually, analytical results have been discussed in conclusion section, in details.
    Keywords: Needling, Hemodialysis, Dialysis Pateints, Antihemorrhagic
  • Manizheh Mollaei *, Ali Mohaghar, Mehdi Afzalian Pages 7-22
    Strategy is a comprehensive program that determines main approaches of the organization and suggests proper ways for allocating resources in order to help the organization to achieve its long term objectives. Environment changing, competitiveness, customer expectations for quality products and efficiency of manpower, have convinced the attitude of managers to have an organizational strategic program. So Strategic Management can play an important role in the decision making and crucial activities with determining long term activities in each organization. Strategic Management process is made from three stages: Strategy formulation, strategy implementation and evaluation that in the strategy formulation, internal and external parts of the organization can be a proper way to provide competitive strategies in an organization. In this article Topsis is used as one of the multi-criteria decision making techniques in the Fuzzy environment to rank the proposed competitive strategies, finally a numerical example is taken to explain the Fuzzy Topsis method. As a result, the prioritized competitive strategies respectively are shown, Value Strategy, Market Development Strategy, Concentric Related Diversification Strategy, Energy Resources Development Strategy and Product Development Strategy.
    Keywords: multi criteria decision making techniques, Topsis, Competitive strategies
  • Saeid Jalilzadeh, Shahriar Golchin* Pages 23-30
    Distributed Generation (DG) is a promising solution to many power system problems such as voltage regulation, power loss and etc. This paper presents a method for the optimal sitting and sizing of Distributed Generation in distribution systems. In this paper, our aim would be optimal Distributed Generation sitting and sizing for voltage profile improvement and loss reduction in distribution network. Genetic Algorithm (GA) was used as the solving tool, which referring two determined aim. The problem is defined and objective function is introduced. We used MATPOWER package for load flow algorithm and composed it with our Genetic Algorithm. The suggested method is programmed under MATLAB software.
    Keywords: Distributed Generation (DG), Genetic Algorithm (GA), Voltage profile, Optimal sitting
  • Nasrin Changizabasi*, Nader Nabhani Pages 31-38
    Abstract Liquid drilling fluid is often called drilling mud is heavy, viscous fluid mixture use to carry rock cuttings to the surface and lubricate and cool the drill bit. During carrying cutting they contaminated which not only reduced their functionality but also make them a hazardous and dangerous wastes which cannot be discharged anywhere without treatment. Due to this fact, in the presents study, a brief account of recent developments and technical applicability of different treatment methods for heavy metal removal is reviewed with a particular focus on nanomaterial adsorbent for the drilling wastes treatment methods for heavy metal removal is reviewed with a particular focus on nanomaterial adsorbent for the drilling wastes treatment in oil and gas industry and include a case study in the region of azadegan formation. The challenges that face future trends of nanomaterial applications in the oil and gas drilling industry are also discussed.
    Keywords: Drilling fluid, Nanomaterial, Adsorbent