نتایج جستجو برای: structural holes
تعداد نتایج: 431127 فیلتر نتایج به سال:
تصویرسازی قابلیتهای فراوانی را دارا است
TiO2/MWCNT nanocomposite thin films containing different percentages of multi-walled carbon nanotubes were coated on fluorinated tin oxide substrates by sol-gel dip coating method. Results of X-ray diffraction analysis indicated that the crystal structure of the coatings was anatase TiO2. It was also understood that the size of crystallites reduced with CNT but structural properties and equilib...
A three-dimensional (3D) geometric model obtained from a 3D device or other approaches is not necessarily watertight due to the presence of geometric deficiencies. These deficiencies must be repaired to create a valid surface mesh on the model as a preprocess of computational engineering analyses. This procedure has been a tedious and labor-intensive step, as there are many kinds of deficiencie...
Does size matter? The influence of shoe-hole sizes on foot-mounted marker motion during walking gait
Background To quantify in-shoe foot kinematics, studies have relied on cutting holes in the shoe upper to allow markers to be placed on the foot. Although previous research has suggested optimum hole sizes to preserve the structural integrity of the shoe [1], there is no empirical basis for what size holes are required to allow free-motion of individual markers during gait. The aim of this stud...
background and aims. the aim of this study was to assess the opening torque of grooved and non-grooved screws made of shape memory alloys (sma) for fixation of mandibular fractures. materials and methods. in this in vitro study the opening torques of ten sma screws with grooves and ten sma screws without grooves were compared in 20 holes (10 holes for grooved screws and 10 holes for non-grooved...
Modern diesel engines should have higher pollutant emissions standards with better performance and by using split injection strategies which could optimize the air – fuel mixture, this purpose could be achieved. After achieving the successful validation between modeling and experimental results for both single and double injection strategies, for the first time and in this paper, double i...
in order to evaluate the efficiency of biocontrol agents of corn stem borer ,ostrinia nubilalis, experiment was conducted in a randomized complete block by five treatments and four replication, including, indoxacarb (avant)®, trichogrammawasps, bacillus thuringiensis var: kurstaki, integration of trichogramma sp. and bt., and control as treatments number 1 to 5. in treatments with parasitoid re...
AIM To prospectively evaluate peripheral visual fields after vitrectomy for idiopathic macular holes. METHODS Goldmann perimetry was performed in 105 patients before, as well as 6 weeks and 12 months after macular hole surgery. RESULTS Only one patient (< 1%) with a stage III macular hole developed an asymptomatic postoperative visual field defect. The scotoma was wedge-shaped, peripherally...
Goat warble-fly infestation is caused by przhevalskiana silenus (Diptra Oestridae) larvae and it is characterized by the presence of warble under the hide of the back and flanks of the animal. This study was carried out from March 2009 to March 2010 on the hides sent to the khorasn leather industries for grading, processing and tanning. This study demonstrated from 340,797 goat hides e...
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