108,247 research outputs found
Novel Design of Cocured Composite ‘T’ Joints with Integrally Woven 3D Inserts
No full textComposites can be exploited to their full potential when cocured, wherein different parts are made and bonded together in a single cure operation to realise an integral structure. The key element in a typical cocured construction is T-joint, which forms the primary load transfer mechanism between the skin and stiffener in a structural assembly. T-joints are particularly vulnerable for pull off loads and researchers are looking at various techniques to improve the pull strength viz. stitching, tufting, 3D weaving, multilayer weaving, 3D braiding and the like. The present work uses a novel technique to improve the strength of T-joints by employing a hybrid design wherein an integral 3D ‘T’ insert is interleaved with a conventional T-joint. Inserts were woven using 3K and 6K carbon tows and incorporated in T-joints using CSIR-NAL proprietary process called ‘Vacuum Enhanced Resin Infusion Technology (VERITy)’ process. Several configurations of T-joints were tested in an UTM in the pull mode till the failure to assess the efficacy of integrally woven 3D inserts. It was observed that the initial failure load was nearly the same across the various T-joint configurations tested whereas the maximum failure loads were quite different. The normalised strength of T-joints with integrally woven 3D inserts in pull off mode was enhanced by about 30% when compared T-joints without the insert and thus vindicating the usage of integrally woven 3D insert in a cocured T-joint. The insert is conceived in such a way that it can be easily incorporated in the design of cocured structures
A case of T-tube dislocation
No full textIn environments where endoscopic retrograde cholangio-pancreatogram (ERCP) services may at time be limited or unavailable, the surgeon must also decide between the insertion of a conventional T-tube or primary choledochorrhaphy when it is operatively perceived that the common bile duct (CBD) has been adequately cleared. Where the hospital stay of the patients with a T-tube in situ is prolonged, there is a higher incidence of postoperative bacteraemia with a moderate morbidity from biliary leakage after T-tube withdrawal. We report here a case as well as methods designed to prevent tube dislocation and alternatives to T-tube insertion after choledochotomy, whether performed open or laparoscopically
Letter, [Author unclear] to Paulina T. Merritt
No full textHandwritten letter to Paulina Merritt from an unknown author, October 1, 1876.
Comparison of Gauss Jacobi Method and Gauss Seidel Method using Scilab
No full textNumerical Method is the important aspects in solving real world problems that are related to Mathematics, science, medicine, business etc. In this paper, We comparing the two methods by using the scilab 6.0.2 software coding to solve the iteration problem. which are Gauss Jacobi and Gauss Seidel methods of linear equations. S. Sathya | T. Ramesh "Comparison of Gauss Jacobi Method and Gauss Seidel Method using Scilab" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-3 | Issue-6 , October 2019, URL: https://www.ijtsrd.com/papers/ijtsrd29316.pd
Correction to: Visual acuity correlates with multimodal imaging-based categories of central serous chorioretinopathy (Eye, (2021), 10.1038/s41433-021-01788-4)
No full textIn this article the author name Ramesh Venkatesh was incorrectly written as Ramesh Vankatesh. The original article has been corrected
Vapour phase diffusion of ammonia on the first row transition metal series and its effect on the crystallization process: A structural investigation
No full textThe diffusion of ammonia vapors to the magnesium/manganese/nickel nitrate solution results in the formation of their respective metal hydroxides, while the diffusion of ammonia vapors to copper and zinc nitrate solutions results in the crystallization of layered hydroxysalts. The PXRD patterns show that highly crystalline phases of samples are obtained. Infrared spectra were used to get information on the local coordination of ions. The thermogravimetric analysis justifies the phases concluded from powder X-ray diffraction and infrared spectroscopy. This clearly demonstrates that the crystal structure is mainly dictated by the nature of the metal ion, its site selectivity and specificity under identical synthesis conditions. Original Russian Text Copyright © 2011 by T. N. Ramesh
Characterization of poly (vinyl chloride) based electrolytes and batteries / Ramesh T. Subramaniam.
No full textHandwritten biographical information on Paulina T. McClung Merritt
No full textA handwritten biography of Paulina T. McClung Merritt by an unknown author, 1892.
Heterogeneous and tissue-specific regulation of effector T cell responses by IFN-gamma during Plasmodium berghei ANKA infection.
No full textIFN-γ and T cells are both required for the development of experimental cerebral malaria during Plasmodium berghei ANKA infection. Surprisingly, however, the role of IFN-γ in shaping the effector CD4(+) and CD8(+) T cell response during this infection has not been examined in detail. To address this, we have compared the effector T cell responses in wild-type and IFN-γ(-/-) mice during P. berghei ANKA infection. The expansion of splenic CD4(+) and CD8(+) T cells during P. berghei ANKA infection was unaffected by the absence of IFN-γ, but the contraction phase of the T cell response was significantly attenuated. Splenic T cell activation and effector function were essentially normal in IFN-γ(-/-) mice; however, the migration to, and accumulation of, effector CD4(+) and CD8(+) T cells in the lung, liver, and brain was altered in IFN-γ(-/-) mice. Interestingly, activation and accumulation of T cells in various nonlymphoid organs was differently affected by lack of IFN-γ, suggesting that IFN-γ influences T cell effector function to varying levels in different anatomical locations. Importantly, control of splenic T cell numbers during P. berghei ANKA infection depended on active IFN-γ-dependent environmental signals--leading to T cell apoptosis--rather than upon intrinsic alterations in T cell programming. To our knowledge, this is the first study to fully investigate the role of IFN-γ in modulating T cell function during P. berghei ANKA infection and reveals that IFN-γ is required for efficient contraction of the pool of activated T cells
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