نتایج جستجو برای: روش sma
تعداد نتایج: 388424 فیلتر نتایج به سال:
OBJECTIVES Spinal Muscular Atrophy (SMA) presents challenges in (i) monitoring disease activity and predicting progression, (ii) designing trials that allow rapid assessment of candidate therapies, and (iii) understanding molecular causes and consequences of the disease. Validated biomarkers of SMA motor and non-motor function would offer utility in addressing these challenges. Our objectives w...
Waste fibers produced from manufacturing processes are a byproduct commonly deposited in storing yards and/or landfills and thus results in many serious environmental problems in Iran. If these waste materials could be advantageously put to practical use in any application, it would reduce the burden on the environment and landfills. This paper compares the performance of the stone matrix aspha...
There are two different ways of using SMA wires as actuators for shape control of flexible structures; which can be either embedded within the composite laminate or externally attached to the structure. Since the actuator can be placed at different offset distances from the beam, external actuators produce more bending moment and, consequently, considerable shape changes with the same magnitude...
BACKGROUND AND PURPOSE Some patients who undergo surgical resection of portions of the supplementary motor area (SMA) have severe postoperative motor and language deficits, whereas others have no deficits. We tested the hypothesis that in some patients with lesions affecting the SMA, the contralateral SMA exhibits some of the activation normally associated with the ipsilateral SMA. METHODS Fu...
Guaranteeing the use of Shape Memory Alloys (SMA) in mitigation of extreme load effects requires a deep study of the SMA behavior according to the specific requirements of the application. In particular, for a storm is necessary more than one million of working cycles. It is applied to two realistic cables in ELSA (JRC-Ispra, Italy) and in IFSTTAR (old LCPC in Nantes, France). The measurements ...
This report describes a new finding regarding language-Supplementary Motor Area (SMA) in language processing using robust clinical protocols i.e. word generation (WG) and sentence generation (SG). This is a retrospective study on 7 patients referred for fMRI for preoperative language mapping. Subjects ranged in age from 20 40 years (28.8 ± 7.3), mean ± SD. We quantified the dimensions of langua...
مشتقات مختلفی از پیرولهای چهار استخلافی طی یک واکنش چند جزئی و یک مرحلهای بین ترکیبات α-هیدروکسی کتون (مشتقات بنزوئین)، مالونونیتریل و آمونیوم استات تحت شرایط بدون حلال، به آسانی و با بازده بالا تولید شدند. در این واکنش سیلیکا مولیبدیک اسید (SMA) بهعنوان کاتالیزور اسید جامد قابل بازیافت، سبز، کارآمد و مفید مورد استفاده قرار گرفت. کاتالیزور سیلیکامولیبدیکاسید (SMA) تهیه شده با استفاده از رو...
The purpose of this study was to investigate whether local mechanisms of blood flow autoregulation mediate vasoconstriction during the early development of renal hypertension. Anesthetized rats were instrumented with Doppler flow probes on the celiac (CA), superior mesenteric (SMA), and renal arteries to measure flow velocity in these vessels. Acute two-kidney, one clip renal hypertension was p...
Spinal muscular atrophy (SMA) is a motoneuron disease caused by loss or mutation in Survival of Motor Neuron 1 (SMN1) gene. Recent studies have shown that selective restoration of SMN protein in astrocytes partially alleviates pathology in an SMA mouse model, suggesting important roles for astrocytes in SMA. Addressing these underlying mechanisms may provide new therapeutic avenues to fight SMA...
This paper presents a shape memory alloy (SMA) ac-tuator aimed to be integrated in the phalanx of a dex-terous micro-gripper. Its original design mechanically decouples motion transmission from force transmission. After a brief discussion on the operating principles of the actuator, the kinematics of the mechanism and its general features are speciied. A thermo-mechanical model of the SMA bers ...
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