Results 61 to 70 of about 11,243 (174)
Journal of Pharmacy and Bioallied SciencesBackground: Good obturation along with hermetic seal is the goal standard for both primary and permanent teeth root canal procedures. Aim: The purpose of this in vitro study was to compare the efficacy of pastinject, motor-driven lentulo-spiral, and ...
Anuja Goit +5 more
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Electron beam welding of aircraft structures [PDF]
, 1972 Requirements for advanced aircraft have led to more extensive use of titanium alloys and the resultant search for joining processes which can produce lightweight, high strength airframe structures efficiently.
Witt, R. H.
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The Effect of Bottom Water Seal Friction on Engineering Behavior of Stainless Steel Hydraulic Gate [PDF]
, 2020 水工閘門是水利工程重要設施，水封更是閘門止水結構不可缺少的裝置，水封一旦安裝不當或損壞，將造成封水不佳導致水封漏水，而底水封之負荷抵抗對水工閘門力學行為之影響是值得探討之課題。 本研究探討2m*2m水工閘門於承受3m水頭，在四種底水封不同止密效應情況下，利用傳統計算方法與PLAXIS 3D Foundation有限元素程式探討相關力學行為，經由研究結果得知，(1)底水封無摩擦效應下，以PLAXIS 3D Foundation有限元素程式分析所得之結果，除底橫梁最大撓度比約高3 ...
王淑霞, Shu-Hsia Wang
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Macro/micro-feature development for improved hydrodynamic performance at the mechanical seal interface via laser surface texturing [PDF]
, 2011 Mechanical Seals are used throughout the world as the principle method whereby fluid containment may be achieved between a rotating shaft and the shaft housing.
Benedict, Joshua King
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Adaptation of ion beam technology to microfabrication of solid state devices and transducers [PDF]
, 1978 A number of areas were investigated to determine the potential uses of ion beam techniques in the construction of solid state devices and transducers and the packaging of implantable electronics for biomedical applications.
Topich, J. A.
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Beam impedance measurements on the ALS sector tank [PDF]
, 1990 The 10 m long ALS curved sector tank is formed from two shells out of which the beam chamber is machined. Vacuum pumping and photon stops are located in an antechamber connected to the beam tube through a 1cm slot.
Goldberg, D.A. +4 more
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Research on Laser Processing Technology of Spiral Groove for Dry Gas Seal
工程科学与技术, 2018 The processing quality of spiral groove on sealing ring has a significant effect on the performance of dry gas seal. In order to obtain high spiral groove processing quality and provide an effective guidance on spiral groove processing technology ...
Wenyuan MAO +4 more
doaj
The behaviour of reinforced concrete beams under cyclic temperature profiles [PDF]
, 1986 On a hot summer day, high levels of solar radiation are incident on concrete bridge decks, causing non-linear variations in temperature through the depths of the structures. The changes in temperature lead to axial expansion and curvature of decks.
Richardson, M, Richardson, Michael
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Clinical Case ReportsLarge cyst‐like periapical radiolucencies with cortical perforations are traditionally managed surgically. However, nonsurgical retreatment may be effective when adequate disinfection and seal are achieved.
Mohamed Ahmed Elsayed +2 more
doaj +1 more source
Clinical Case ReportsThis case report describes the successful treatment of a mature anterior tooth with an open apex and chronic apical abscess using a regenerative endodontic procedure.
Murilo Priori Alcalde +8 more
doaj +1 more source