نتایج جستجو برای: mechanical handling
تعداد نتایج: 306153 فیلتر نتایج به سال:
Teleoperation is the performance of a task or action from a distance. Although, in this sense, teleoperation can be applied to any operation performed from a distance, the term is most commonly associated with robotics and mobile robots and indicates the operation of such machines from a place far from the location of the machine [1]. Several factors are involved in a teleoperated robotic syste...
رساله حاضر به حل عددی انتقال حرارت ترکیبی (جابجایی متخلط –تشعشع ) در یک کانال عمودی پرداخته است که در آن اثرات تشعشع برای دیواره های کانال و همچنین برای سیال عامل در نظر گرفته شده است. در این پژوهش جریان سیال در داخل کانال به صورت آرام پایا و دوبعدی در نظر گرفته می شود دمای دیواره های کانال ثابت است. معادلات حاکم بر مسیله شامل معادلات پیوستگی اندازه حرکت انرژی و انتقال حرارت تشعشعی می باشد که ب...
When dealing with imperfect data and general models of dynamic systems, the best estimate is always sought in the presence of uncertainty or unknown parameters. In many cases, as the first attempt, the Extended Kalman filter (EKF) provides sufficient solutions to handling issues arising from nonlinear and non-Gaussian estimation problems. But these issues may lead unacceptable performance and e...
Numerous positive properties of glass ionomer cements including biocompatibility, bioactivity, releasing of fluoride and good adhesion to hard dental tissue even under wet conditions and easy of handling are reasons for their wide use in paediatric and restorative dentistry. Their biggest drawbacks are the weaker mechanical properties. An important step forward in improving GIC's features is th...
A simple method of handling objects by cooperation of three PID positioncontrolled robots is proposed. In order to handle single object by multiple position-controlled robots, mechanical compliance is installed into each robot to avoid excessive inner forces due to the mutual positioning errors. First, necessary kinematic conditions required for installed mechanical compliance is reviewed. Then...
Background: The present study aimed to assess handling procedures and their effects on the sleep-wake time in the preterm infants admitted to the neonatal intensive care unit (NICU). Methods: This observationalcross-sectional study was conducted in the NICU ofVali-e-Asr Teaching Hospital affiliated to Tehran University of Medical Sciences (TUMS), Iran in 2016. Sample population consisted of 15...
Objective: This study aimed to analyze the concept of occupational therapy handling in the children with cerebral palsy from the perspective of occupational therapy instructors and clinicians in Iran. Materials & Methods: In this qualitative study, using hybrid model to clarify the concept of handling through three phases. For the theoretical phase, attributes of handling were recognized thr...
BACKGROUND Polymethylmethacrylate bone cement cannot provide an adhesive chemical bonding to form a stable cement-bone interface. Bioactive bone cements show bone bonding ability, but their clinical application is limited because bone resorption is observed after implantation. Porous polymethylmethacrylate can be achieved with the addition of carboxymethylcellulose, alginate and gelatin micropa...
We have developed a micromachined flow cell consisting of a flow channel integrated with micropipettes. The flow cell is used in combination with an optical trap set-up (optical tweezers) to study mechanical and structural properties of ADNA molecules. The flow cell was realised using silicon micromachining including the so-called buried channel technology to fabricate the micropipettes, the we...
Abstract In response to the demand for automated item handling, this paper proposes an omnidirectional wheeled handling robot. Firstly, determine that its mobile platform is based on design of Mecanum wheel, which can move safely and efficiently. Secondly, according common object shapes, a single-side opening closing insertion rack clamping mechanism proposed. Thirdly, in order meet needs trans...
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