نتایج جستجو برای: bead geometry
تعداد نتایج: 152450 فیلتر نتایج به سال:
Due to its excellent toughness and stiffness in cryogenic conditions, 9% nickel steel is applied LNG storage facilities, usage increasing as a result of changes environmental regulations. A study was conducted on the development predictive model optimize laser welding process steel, two prediction models were developed using one hundred data points obtained through experiments. global regressio...
In the present study, textural and structural characterizations of chitosan bead for immobilization of alpha amylase were studied in detail by N2 adsorption–desorption, Microspore Analysis (MP), Barrett–Joyner–Halenda (BJH) plots and Field Emission Scanning Electron Microscope (FESEM) observations. Pore structure observation revealed chemical activation of chitosan bead by glutaralde...
Magnetic twisting cytometry probes mechanical properties of an adherent cell by applying a torque to a magnetic bead that is tightly bound to the cell surface. Here we have used a three-dimensional finite element model of cell deformation to compute the relationships between the applied torque and resulting bead rotation and lateral bead translation. From the analysis, we computed two coefficie...
طی ده سال گذشته، خون بندناف به عنوان یک منبع جایگزین برای بدست آوردن سلولهای خونساز، در پیوند آلوژنیک مورد توجه قرار گرفته است .از مزایای خون بند ناف سهل الوصول بودن آن بوده و همچنین کم بودن سلولهای t در این نمونه می باشد . از طرفی اکثر سلولهای t موجود نیز مبتدی می باشند. همین ویژگی باعث می شود تا در استفاده از این سلولها برای پیوند مغز استخوان کمتر شاهد بروز بیماری پیوند علیه میزبان در گیرندگا...
background: although the imbalance of cytokines in head and neck squamous cell carcinoma (hnscc) is well known, there is scarce data regarding its occurrence during dysplasia, before the malignant transformation. objective: to determine whether laryngeal dysplasia patients show a different cytokine profile than patients with cancer and healthy controls. methods: seventeen newly diagnosed, untre...
The objective of this research is to develop an experimental-theoretical analysis about the 11 influence of the cooling medium and the geometry of the welding bead profile in fatigue life and 12 associated parameters with structural integrity of welded joints. A welded joint with cruciform 13 geometry is considered using SMAW, plates in structural steel ASTM A36 HR of 8 mm of 14 thickness and E...
The non-continuous laser beam in pulsed lasers allows the mechanical peening between two consecutive beams on a still hot weld bead. At a very short time (20, 150 and 300 ms) after laser pulse application, mechanical peening was performed on the welding bead. To achieve these short times, the light sensor detects the nth laser pulse and the mechanical arm starts moving. Upon reaching the tip of...
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