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氨基硅油柔软剂在棉纤维上的吸附研究

国际纺织导报 2014年第5期42卷 46-47,50-51页

作者： m.er-rafik m.moller A.L.mohamed K.Spyropoulos R.Wagner 张恒頔罗艳亚琛工业大学纺织高分子协会和技术高分子化学研究所亚琛工业大学(德国) 国家研究中心纺织研究部(埃及) 迈图高性能材料集团(德国) 不详

研究了氨基硅油TSF4708在棉平针织物和毛圈织物上的吸附和解吸动力学及其分布,并将其动力学数据和分布数据与季铵化的增强剂magnasoft SilQ进行了对比。TSF4708的吸附与质量浓度有关。在最初200 s内,有80%的TSF4708吸附在棉平针织物和... 详细信息

研究了氨基硅油TSF4708在棉平针织物和毛圈织物上的吸附和解吸动力学及其分布,并将其动力学数据和分布数据与季铵化的增强剂magnasoft SilQ进行了对比。TSF4708的吸附与质量浓度有关。在最初200 s内,有80%的TSF4708吸附在棉平针织物和毛圈织物上。EDX映射和共聚焦拉曼光谱显示在纤维表面及纤维内部有2μm厚的高质量浓度元素硅层。阴离子洗涤剂存在下的吸附试验发现,相同条件下,TSF4708比magnasoft SilQ解吸的量更多。

关键词：氨基硅油柔软剂棉吸附动力学解吸动力学

Chronic allograft rejection:A significant hurdle to transplant success

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Burns & Trauma 2014年第1期2卷 3-10页

作者： malgorzata Kloc rafik m.Ghobrial Department of Surgery Houston Methodist HospitalHouston Houston methodist Hospital Research Institute HoustonTXUSA

The state-of-the-art immunosuppression drugs do not ensure indefi nite transplant survival,and most transplants are continuously lost to chronic rejection even years *** form of rejection is responsible for long-term failure of transplanted *** mechanisms involved in development of chronic rejection are not *** of the main features of chronic rejection is progressive luminal narrowing of graft vessels,which results in compromised blood flow,ischemia,cell death,and finally graft *** the existing immunosuppressive regimens are targeting acute rejection,and at present there is no available therapy for prevention of chronic *** rejection involves two major,but interrelated responses:The first is the host immune response against the transplant mediated primarily by alloreactive T and B cells,and the second is injury and repair of the graft(vasculopathy of graft vessels).Here we focus on recent advances in understanding the cellular and molecular aspects of chronic transplant vasculopathy and function of macrophages,topics pivotal for development of novel antichronic rejection therapies.

关键词： Chronic rejection macrophage neointima consists of smooth muscle cells vasculopathy

The RNA helicase DHX15 is a critical regulator of natural killer-cell homeostasis and functions

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Cellular & molecular Immunology 2022年第6期19卷 687-701页

作者： Guangchuan Wang Xiang Xiao Yixuan Wang Xiufeng Chu Yaling Dou Laurie J.minze rafik m.Ghobrial Zhiqiang Zhang Xian C.Li Immunobiology and Transplant Science Center and Department of Surgery Houston Methodist HospitalTexas Medical CenterHoustonTXUSA Department of Surgery Weill Cornell Medical College of Cornell UniversityNew YorkNYUSA

The RNA helicase DHX15 is widely expressed in immune cells and traditionally thought to be an RNA splicing factor or a viral RNA ***,the role of DHX15 in NK-cell activities has not been studied thus ***,we generated Dhx15-floxed mice and found that conditional deletion of Dhx15 in NK cells(Ncr1CreDhx15fl/fl mice)resulted in a marked reduction in NK cells in the periphery and that the remaining Dhx15-deleted NK cells failed to acquire a mature *** a result,Dhx15-deleted NK cells exhibited profound defects in their cytolytic *** also found that deletion of Dhx15 in NK cells abrogated their responsiveness to IL-15,which was associated with inhibition of IL-2/IL-15Rβ(CD122)expression and IL-15R *** defects in Dhx15-deleted NK cells were rescued by ectopic expression of a constitutively active form of ***,DHX15 did not affect CD122 mRNA splicing and stability in NK cells but instead facilitated the surface expression of CD122,likely through interaction with its 3′UTR,which was dependent on the ATPase domain of DHX15 rather than its splicing ***,our data identify a key role for DHX15 in regulating NK-cell activities and provide novel mechanistic insights into how DHX15 regulates the IL-15 signaling pathway in NK cells.

关键词： DEAH-box helicase 15(DHX15) Innate immunity Natural killer(NK)cells Homeostasis IL-15 signaling pathway

Reduce Torque Ripple of Im by Approach method DTC

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Intelligent Control and Automation 2011年第4期2卷 320-329页

作者： Lotfi El m’Barki moez Ayadi rafik Neji 不详

This paper presents a new methodology for direct torque control (DTC) with improvement method control for induction motor (Im) systems. The application of approached method DTC (AmDTC), allows by using two hysteresis controllers to regulate torque and flux with the information of the angular location to address the switching table. The principal advantage of this AmDTC (optimization method of DTC) enables the minimization of the electromagnetic torque ripple and the reduction of the output current total harmonic distortion (THDI). Furthermore, it improved consumption quality of Im and it improved the lifespan of the motor. The switching characteristics of an inverter feeding an Im controlled with the AmDTC system are assessed in steady *** proposed method of AmDTC is illustrated by computer

关键词： AmDTC minimum RmS THD Evolution of Tem.erature

Existence and Nonexistence of Weak Positive Solution for a Class of p-Laplacian Systems

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Journal of Partial Differential Equations 2014年第2期27卷 158-165页

作者： AKROUT Kamelz GUEFAIFIA rafik LAmIS Laboratory Tebessa University Tebessa Algeria LANOS Laboratory Badji Mokhtar lfniversityAnnaba Algeria.

In this work, we are interested to obtain some result of existence and nonex- istence of positive weak solution for the following p-Laplacian system {-△piui=λifi（u1,^…,um）,inΩ, i=1,...,m, ui=0,on δΩ,Vi=1,…,m,where △piz = div（｜△z｜^pi-2△Z）, Pi ≥ 1,λi,1 ≤ i ≤ m are a positive parameter, and Ω is a bounded domain in IR^N with smooth boundary δΩ. The proof of the main results is based to the method of sub-supersolutions.

关键词： Positive solutions sub-supersolutions elliptic systems.

molecular and cellular pathways involved in the therapeutic functions of mHC molecules;a novel approach for mitigation of chronic rejection

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Open Journal of Immunology 2011年第2期1卷 15-26页

作者： Thomas S. Skelton malgorzata Kloc rafik m. Ghobrial 不详

The mutated major histocompatibility complex (mHC) class I that contains donor-type epitopes displayed on recipient-type molecule was show- n to inhibit acute and chronic rejection and in-duce indefinite survival of heterotopic cardiac allografts when administered in combination with a sub-therapeutic dose of cyclosporine (CsA) in a rat transplantation model. To eluci-date the molecular pathways involved in the immunosuppressive effects of the mutated mHC molecule, we analyzedgene and protein expres-sion profile during early and late phase follow-ing post-transplantation. Cytoskeletal structure analysis and expression status of Rho GTPase proteins, vacuolar transport and cytoskeleton regulatory pathways involved in immune re-sponse in T and dendritic cells demonstrated the novel mechanism for the abrogation of chronic rejection. Our studies confirm a new role of Rho GTPase pathway in the modification of T cell motility and infiltration of the graft. We discuss these results within the framework of the most recent literature on mHC and molecu-lar machinery controlling T cell functions and dendritic cell antigen presentation.

关键词： mHC Transplantation Allograft Chronic Rejection Rat

Noncanonical intercellular communication in immune response

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World Journal of Immunology 2016年第1期6卷 67-74页

作者： malgorzata Kloc Jacek Z Kubiak Xian C Li rafik m Ghobrial Department of Surgery Methodist Hospital Houston methodist Research Institute Centre National de la Recherche Scientifique Unités mixtes de Recherche 6290 Institute of Genetics and Development of RennesCell Cycle GroupFaculty of Medic-ineUniversity of Rennes Faculty of medicine University of Rennes 1 Sherrie and Alan Conover Center for Liver Disease and Transplantation

The classical view of signaling between cells of immune system includes two major routes of intercellular communication:Through the release of extracellular molecules or a direct interaction between membrane bound receptor and its membrane bound ligand,which initiate a cascade of signaling in target ***,recent studies indicate that besides these canonical modes of signaling there are also noncanonical routs of intercellular communications through membrane stripping/membrane exchange/trogocytosis,extracellular traps,exosomes and ectososmes/*** this review we discuss what are the components of noncanonical pathways of signaling and what role they play in immune cells interactions.

关键词： Trogocytosis membrane stripping Extracellular traps Exosomes Ectososmes microparticles

Complications arising in simple and polycystic liver cysts

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World Journal of Hepatology 2012年第12期4卷 406-411页

作者： Christian macutkiewicz Ricci Plastow melissa Chrispijn rafik Filobbos Basil A Ammori David J Sherlock Joost PH Drenth Derek A O’Reilly Department of HepatoPancreato-Biliary Surgery North Manchester General HospitalManchester M8 5RBUnited Kingdom Department of Gastroenterology and Hepatology Radboud University Nijmegen Medical CenterPO Box 9101Code 455 NijmegenThe Netherlands Department of Radiology North Manchester General HospitalManchester M8 5RBUnited Kingdom The University of manchester Manchester Academic Health Science CentreManchesterUnited Kingdom

Liver cysts are common,affecting 5%-10% of the *** are asymptomatic,however 5% of patients develop symptoms,sometimes due to complications and will require *** is no consensus on their management because complications are so *** aim of this study was to perform a collected review of how a series of complications were managed at our *** different patients presenting with rare complications of liver cysts were obtained from Hepatobiliary Units in the United Kingdom and The *** and radiological imaging were obtained from case notes and computerised *** a result,1 patient admitted with inferior vena cava obstruction was managed by cyst aspiration and lanreotide;1 patient with common bile duct obstruction was first managed by endoscopic retrograde cholangiopancreatography and stenting,followed by open fenestration;1 patient with ruptured cysts and significant medical co-morbidities was managed by percutaneous drainage;1 patient with portal vein occlusion and varices was managed by open liver resection;1 patient with infected cysts was treated with intravenous antibiotics and is awaiting liver *** final patient with a simple liver cyst mimicking a hydatid was managed by open liver *** conclusion,complications of cystic liver disease are rare,and we have demonstrated in this series that both operative and non-operative strategies have defined roles in *** mainstays of treatment are either aspiration/sclerotherapy or,alternatively laparoscopic *** management with somatostatin analogues is a potentially new and exciting treatment option but requires further study.

关键词： Liver Cysts Complications Polycystic

新一代有机硅整理剂magnasoft SilQ~在棉织物上吸附沉淀行为的研究(一)

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国际纺织导报 2012年第5期40卷 47-47,50,51,54,82页

作者： m. er-rafik A. L. mohamed m. mller K. Spyropoulos R. Wagner DWI anderRWTHAachene.V.andInstituteofTechnicalMacromolecularChemistry亚琛工业大学(德国) Textile Research Division National Research Centre(埃及) momentive Performance materials公司(德国)

季铵基团改性硅油,又称季铵硅油,近年来被作为柔软剂应用在纺织行业中。最近,迈图高新材料公司开发和推出了一款全新的持久型亲水季铵硅油——magnasoft SilQ。就magnasoft SilQ在棉织物吸附过程的动力学做了深入研究。先将magnasoft ... 详细信息

季铵基团改性硅油,又称季铵硅油,近年来被作为柔软剂应用在纺织行业中。最近,迈图高新材料公司开发和推出了一款全新的持久型亲水季铵硅油——magnasoft SilQ。就magnasoft SilQ在棉织物吸附过程的动力学做了深入研究。先将magnasoft SilQ用荧光标记,再用UV/VIS(紫外可见光谱)和ATR-IR(傅里叶变换衰减全反射红外光谱)等表征手段,对在不同温度和不同浓度下magnasoft SilQ在棉织物上的吸附动力学进行了研究,并在此基础上建立了吸附模型。此外,借助荧光显微镜、EDX(X光能谱)、拉曼电镜等仪器,对magnasoft SilQ在棉织物表面以及横截面的分布做了分析。最后,对magnasoft SilQ被阴离子洗涤剂洗涤时的解吸附过程的动力学做了研究。

关键词：织物整理剂吸附动力学解吸附动力学有机硅分布 magnasoft SilQ