نتایج جستجو برای: روش لیزری pda
تعداد نتایج: 375911 فیلتر نتایج به سال:
Treatment of the large patent ductus arteriosus (PDA) in the setting of pulmonary hypertension (PH) is challenging. Left patent, the large PDA can result in irreversible pulmonary vascular disease. Occlusion, however, may lead to right ventricular failure for certain patients with severe PH. Our center has adopted a staged management strategy using medical management, noninvasive imaging, and i...
اغلب زیست مواد به گونه ای طراحی میشوند که توده آنها دارای خواص مکانیکی مناسب باشد و سطحشان با هدف تامین ویژگیهای مناسب تغییر یافته باشد . یکی از روشهای نوین برای تغییر دادن خواص سطوح، استفاده از لیزر است که از جمله روشهای کنترل پذیر و انعطاف پذیر به شمار می رود . لیزر در آماه سازی سطوج خواص منحصر بفردی دارد. تشعشع الکترومغناطیس پرتو لیزری در لایه های اتمی سطحی مواد اوپک ( مانند فلزات) جذب می شو...
The aim of this research is to develop a fast and reliable surveillance system based on a personal digital assistant (PDA) device. This is to extend the capability of the device to detect moving objects which is already available in personal computers. Secondly, to compare the performance between Background subtraction (BS) and Temporal Frame Differencing (TFD) techniques for PDA platform as to...
We experienced the ligation of patent ductus arteriosus (PDA) via the left thoracotomy in a 24-day-old infant with inferior vena cava defect and hemiazygos communication to a persistent left superior vena cava (LSVC). Although the large hemiazygos vein (HAzV) crossed just in front of PDA, its mobilization enabled the smooth ligation of PDA without hemodynamic instability. The postoperative cour...
We describe a collaborative environment Garnet designed around a universal event model using the publish-subscribe paradigm. We study the integration of personal digital assistants (PDA) into synchronous collaborative sessions. Our architecture uses a PDA adaptor that maps system events into a form suitable for the PDA and uses an optimized protocol that respects bandwidth limitations.
کیفیت اســپری به خواص سیال، شرایط محیطی و نوع پودرکننده بستگی دارد. در این مقاله با استفاده از سیستم pda (phase doppler anemometer) تأثیر پارامترهای هندسی یک انژکتور پیچشی بر روی اندازه و سرعت قطرات اسپری مورد مطالعه قرار گرفته و با اندازه گیری های انجام یافته مشخص می شود که تغییر هر یک از اندازه های ابعادی انژکتور پیچشی چه تأثیری بر سرعت و اندازه قطرات می گذارد. بدین ترتیب می توان در طراحی و آ...
We report a simple and facile protocol to fabricate mussel-inspired polydopamine (PDA) gradients on different surfaces. An oxygen diffusion phenomenon was used for dopamine autoxidation to form thickness gradients of PDA on different substrates. These PDA gradients showed gradual changes in thickness, roughness, wettability and light transmittance.
OBJECTIVE Extensive molecular heterogeneity of pancreatic ductal adenocarcinoma (PDA), few effective therapies and high mortality make this disease a prime model for advancing development of tailored therapies. The p16-cyclin D-cyclin-dependent kinase 4/6-retinoblastoma (RB) protein (CDK4) pathway, regulator of cell proliferation, is deregulated in PDA. Our aim was to develop a novel personalis...
A series of Zn(II) and Cd(II) complexes with a flexible dicarboxylate building block and various heterocyclic co-ligands, formulated as {[Zn(2)(pda)(2)(phen)(2)].2H(2)O}(n) (1), {[Zn(pda)(dpe)].H(2)O}(n) (2), [Zn(pda)(bpp)](n) (3), {[Cd(2)(pda)(2)(2,2'-bipy)(2)].2H(2)O}(n) (4), {[Cd(pda)(4,4'-bipy)(H(2)O)].H(2)O}(n) (5) and {[Cd(2)(pda)(2)(bpp)(3)].14H(2)O}(n) (6) (pda = 1,3-phenylenediacetate,...
BACKGROUND Patent ductus arteriosus (PDA) is one of most common complications in preterm infants. Although ibuprofen represents the first choice for the closure of PDA, this treatment can cause severe gastrointestinal and adverse renal effects and worsen platelet function. The successful closure of the PDA with paracetamol has been recently reported in several preterm infants, and the safety of...
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