نتایج جستجو برای: helical port
تعداد نتایج: 51234 فیلتر نتایج به سال:
The T1 recognition domains of voltage-gated K(+) (Kv) channel subunits form tetramers and acquire tertiary structure while still attached to their individual ribosomes. Here we ask when and in which compartment secondary and tertiary structures are acquired. We answer this question using biogenic intermediates and recently developed folding and accessibility assays to evaluate the status of the...
This diagnostic, known as the segmented mask infrared imaging bolometer (SIB), uses state-of-theart infrared (IR) imaging technology to measure the temperature rise of each pixel in a two dimensional array mask sandwiching the metal foil. We have designed, constructed, installed and calibrated a version of the SIB for the Large Helical Device (LHD). This diagnostic has a two dimensional view (t...
An experimental study is reported on natural convection heat transfer from a helical heating coil to the surrounding fluid. The coil is heated electrically and the surrounding fluid is selected to be water. The range of parameters are: Rayleigh number, 879 ?£ Ra ?£ 780168, Prandtl number, 4.22 ?£ Pr ?£ 10.02, dimensionless coil diameter,7.69 ?£ Dave /d ?£ 10.77, number of coil rings, 2 ?£ N ?£ ...
percutaneous retrieval of an intracardiac central venous port fragment using snare with triple loops
peripherally inserted venous ports fracture with embolization in patients who received chemotherapy is a serious and rare complication,and few cases have been reported in children. we report a successful endovascular technique using a snare for retrieving broken peripherally inserted venous ports in a child for chemotherapy. catheter fragments may cause complications such as cardiac perforation...
The generation of coherent Terahertz (THz) radiation is studied which is produced from moving the relativistic electron beam through a helical wiggler with axial magnetic field. The relativistic electron beam is modulated via interacts with the beat wave of two laser beams that have frequency difference in THz range. When the modulated relativistic beam of electrons go through the helical wiggl...
evidence acquisition a systematic literature searching of databases medline, embase, and google scholar was done from 1982 and updated in december 2015. search terms were “cholecystectomy”, “laparoscopic cholecystectomy”, “four port laparoscopic cholecystectomy”, “single-incision laparoscopic surgery”. context laparoscopic approach with its several techniques has become the standard method for ...
This paper presents the design and electromagnetic characterization of a 3D-printed 2-way broadband power divider intended to work in RF band from several hundred MHz up few GHz. The is based on use helical-microstrip transmission line segments. Two different topologies tapered segments are considered prior deciding final divider. characteristic impedance profiles both analyzed by means simulat...
A simple algorithm is presented for evaluating scattering parameters of a two-port network. This technique uses the indefinite admittance matrix to calculate scattering or any other desired set of two-port parameters.
Port organizations have focused their efforts on physical or tangible assets, generating profitability and value. However, it is recognized that the greatest sustainable competitive advantage is the creation of knowledge using the intangible assets of the organization. The Balanced ScoreCard, as a performance tool, has incorporated intangible assets such as intellectual, structural and social c...
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