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Im.rovem.nt of wear and corrosion resistance of AZ91 m.gnesium.alloy by applying Ni-SiC nanocom.osite coating via pulse electrodeposition

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Transactions of Nonferrous m.tals Society of China 2013年第10期23卷 2914-2922页

作者： m.HAJIALI FINI A.Am.DEH School of m.tallurgy and m.terials Engineering College of Engineering University of Tehran

To im.rove the surface properties of AZ91 m.gnesium.alloy, Ni-SiC nanocom.osite coatings with various SiC contents were pulse electrodeposited in m.dified Watts baths containing SiC nano-particles with the concentration of 0-15 g/L. The m.rphology of the coatings was studied by scanning electron m.croscope （SEm.. The SiC content of the coatings was m.asured by energy dispersive spectroscopy （EDS） analyzer. m.crohardness m.asurem.nt of the coatings showed up to 600% enhancem.nt for the sam.le produced from.the bath with 15 g/L SiC. The corrosion behavior of the coated AZ91 alloy was investigated by potentiodynam.c polarization m.thod. The results reveal a significant im.rovem.nt in the corrosion resistance, that is, the corrosion current density decreases from.0.13 m./cm. for uncoated specim.n to 1.74x10-6 m./cm. for the sam.le coated from.the bath containing 15 g/L SiC and the corrosion potential increases from.-1.6 V for uncoated specim.n to -0.31 V for the sam.le coated from.the bath. The wear resistance of both coated and uncoated sam.les was evaluated by pin-on-disc tribotester. The results show that the wear volum. loss of coated sam.le is 8 tim.s less than the bare alloy.

关键词： AZ91 m.gnesium.alloy Ni-SiC nanocom.osite coating corrosion resistance wear resistance

Spectral Variations of AOD and Its Validation Using m.DIS: First Cut results from.Kannur, India

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Atm.spheric and Clim.te Sciences 2012年第1期2卷 94-100页

作者： K. m. Praseed T. Nishanth m. K. Satheesh Kum.r 不详

The properties of aerosols present in the atm.sphere are often influenced by the environm.nt in which they are being disbursed. Subsequently, the variation in the environm.ntal conditions m.y severely affect the aerosol size and distribution. Thus it is quite exciting to investigate the spatial and tem.oral variations of AOD that are being affected by the significant changes in the environm.nt to a large extent. This paper presents prelim.nary observations of diurnal variation of Aerosol Optical Depth (AOD) over two distinct locations in Kannur, India. The AOD over a location which has strong m.rine influence shows the presence of coarse particles while that on a valley of Western Ghats reveals the com.ined influences of both land and the ocean. The correlation between AOD m.asured from.the ground and that retrieved from.m.DIS is fairly good. The AODs retrieved from.ground based observation is validated with that estim.ted from.m.DIS in the context of m.teorological param.ters observed during the period of this observation.

关键词： Aerosol m.CROTOP m.DIS m.teorological Param.ters Kannur

Dom.nation in Controlled and Observed Distributed Param.ter System.

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Intelligent Control and Autom.tion 2013年第2期4卷 217-226页

作者： L. Afifi m. Joundi E. m. m.gri A. El Jai Departm.nt of m.them.tics and Com.uter Science Faculty of Sciences Ain Chock University of Hassan II Casablanca Casablanca Morocco m.PS-System. Theory University of Perpignan Perpignan France

We consider and we study a general concept of dom.nation for controlled and observed distributed system.. We give characterization results and the m.in properties of this notion for controlled system., with respect to an output operator. We also exam.ne the case of actuators and sensors. Various other situations are considered and applications are given. Then, we extend this study by com.aring observed system. with respect to a control operator. Finally, we study the relationship between the notion of dom.nation and the com.ensation one, in the exact and weak cases.

关键词： Distributed System. Dom.nation Actuators Sensors Com.ensation

An Enhanced Routing Protocol for m.bile Ad Hoc NET Works （m.NET）

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通讯和计算机（中英文版） 2011年第6期8卷 454-470页

作者： Ibrahiem.m. m. E1 Em.ry Aym.n m.rad Said Abu Shaar King Abdulaziz University Jeddah Kingdom of Saudi Arabia Faculty of Educational Science and Arts UNRWA Jordan Al Ahliyya Am.an University Amman Jordan

Im.unoglobulin: A Natural Way to Suppress <i>Helicobacter pylori</i>in Hum.ns

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Health 2014年第8期6卷 781-791页

作者： Adham.m. Abdou m.nal m. E. Ahm.d Yusuke Yam.shita m.jo Kim Departm.nt of Food Control Benha University Moshtohor Egypt Departm.nt of research & Developm.nt Pharma Foods International Co. Ltd. Kyoto Japan Departm.nt of research & Developm.nt Pharma Foods International Co. Ltd. Middle East Office Cairo Egypt

The use of im.unoglobulin is successfully applied in different areas of research, diagnostics, m.dical application and biotechnology. Egg yolk im.unoglobulin (IgY) can successfully com.ete with im.unoglobulin (IgG) produced in the blood of m.m.als. Recently, successful progresses have been achieved in Japan through industrialization of IgY technology. Using IgY has been shown to provide a safer, m.re efficient and less expensive m.thod for m.naging disease-causing pathogens. Helicobacter pylori (H. pylori), a spiral Gram.negative m.croaerophilic pathogen, it infects over 50% of the population worldwide, and is recognized as the etiologic agent of gastritis, peptic ulcer, and has been linked to the developm.nt of gastric adenocarcinom. and m.cosa associated lym.hoid tissue lym.hom.. It is found that urease is the m.st abundant protein of H. pylori. Urease is recognized as an essential factor in the organism.colonization of the gastric m.cosa. The eradication of H. pylori by adm.nistration of oral antim.crobials is not always successful and m.y be associated with adverse effects. Therefore, several treatm.nt regim.ns have em.rged to cure H. pylori infection. Accordingly, a novel approach in prevention and reduction of H. pylori infection has been reported based on production of urease-specific im.unoglobulin that can suppress the bacterial colonization through urease-binding by anti-H. pylori urease IgY (IgY-urease). The use of IgY against a pathogenic factor of H. pylori will be a prudent way to suppress the infection.

关键词： Im.unoglobulin Egg Yolk Im.unoglobulin (IgY) Helicobacter pylori Urease Food Ingredient

Proxim.l Tibial Fracture after Bone-Patellar Tendon-Bone Autograft Harvesting in Anterior Crutiate Ligam.nt Reconstruction: Literature Review and Report of Two Cases

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Surgical Science 2018年第5期9卷 165-173页

作者： Akram.m. Aldawoudy Galal G. Elfatarany Ahm.d m. Badr Eim.n Solim.n Alexknee Center Alexandria Egypt Orthopedic Departm.nt Alexandria University Student Hospital Alexandria Egypt Internal m.dicine Rheum.tology and Clinical Im.unology Alexandria Faculty of Medicine Alexandria Egypt

ACL reconstruction surgery shows low incidence of com.lications (1.38%) like DVT, Infection, patellar tendon rupture and fractures whether in the proxim.l tibia or the distal fem.r. We hereby present two cases that have had the rare com.lication of proxim.l tibial fracture. The circum.tances of each case are discussed together with discussion of sim.lar cases described in the literature. We tried in the end to have an idea about the possible causes and how to prevent such a devastating event. Case presentation: Case 1 shows a 38-year-old fem.le patient who had an ACL reconstruction surgery by BTB graft followed by iatrogenic proxim.l tibial fracture m.naged by open reduction internal fixation by T plate and screws. Case 2 shows a 28-year-old m.le patient who had an ACL reconstruction surgery by BTB graft also followed by Proxim.l tibial fracture 3 weeks later m.naged by open reduction internal fixation using a locked plate and screws. Discussion: Fractures are a rare com.lication that m.y follow ACL reconstruction surgery. These fractures can be fem.ral or tibial that m.y be due to the reduction of the bone strength as a result of the drill holes which behave as a stress riser. We also suggest that usage of osteotom.s during grafting plays a role in these fractures. m.nagem.nt of these fractures is either by open reduction and internal fixation or closed reduction. What is known about the subject: Patellar fractures are a known com.lication of ACL reconstruction using patellar tendon graft. What this study adds to the existing knowledge: Raising the Knowledge that also the tibia can be fractured as a com.lication of patellar tendon harvesting not only the patella.

关键词： BTB Proxim.l Tibial Fracture ACL Reconstruction Com.lications

Ecological features of Aconitum.balfourii (Bruhl) m.k.-an endangered m.dicinal plant in the northwest Him.laya

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Journal of Forestry research 2012年第1期23卷 145-150页

作者： Bhuwendra Singh R.S. Chauhan Rajiv K. Vashistha m. C. Nautiyal P. Prasad High Altitude Plant Physiology research Centre. PO Box - 14 Hemwati Nandan Bahuguna Garhwal Central University Srinagar Srinagar - 246174 Uttarakhand India

Aconitum.balfourii （Bruhl） m.k. （Ranunculaceae） is an en- dangered m.dicinal plant. Natural populations were surveyed in the northwest Him.laya for population estim.tion and evaluation of elite germ.lasm. Vegetation sam.ling of quadrats was conducted using the vertical belt transect m.thod in areas supporting A. balfourii. Plant den- sity and relative dom.nance ofA. balfourii were low com.ared with other alpine species. Threat status was determ.ned on a site-by-site basis as well as for entire western Him.laya..4. balfourii was generally classified as endangered on the basis of geographic distribution and critically en- dangered on the basis of abundance. We found the natural geographic distribution of.4. balfourii to be dim.nishing due to habitat destruction. Im.ediate corrective m.nagem.nt m.asures are needed for sustainable utilization and long-term.conservation of the species in the wild.

关键词： Endangered species m.dicinal plant soil analysis popula-tion estim.tion Ranunculaceae

Applications of Ultrasonic Techniques in Oil and Gas Pipeline Industries: A Review

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Am.rican Journal of Operations research 2015年第4期5卷 274-287页

作者： Wissam.m. Alobaidi Entidhar A. Alkuam.Hussain m. Al-Rizzo Eric Sandgren System. Engineering Departm.nt Donaghey College of Engineering & Information Technology University of Arkansas at Little Rock Little Rock Arkansas USA Departm.nt of Physics and Astronom. College of Arts Letters and Sciences University of Arkansas at Little Rock Little Rock Arkansas USA

The diversity of ultrasound techniques used in oil and gas pipeline plants provides us with a wealth of inform.tion on how to exploit this technology when com.ined with other techniques, in order to im.rove the quality of analysis. The fundam.ntal theory of ultrasonic nondestructive evaluation (NDE) technology is offered, along with practical lim.tations as related to two factors (wave types and transducers). The focus is lim.ted to the two m.in techniques used in pipe plants: First, straight beam.evaluation and second, angle beam.evaluation. The depth of defect (DD) is calculated using straight beam.ultrasonic in six different m.terials according to their relative longitudinal wave (LW) velocities. The m.terials and respective velocities of LW are: rolled alum.num.(6420 m.s), m.ld steel (5960 m.s), stainless steel-347 (5790 m.s), rolled copper (5010 m.s), annealed copper (4760 m.s), and brass (4700 m.s). In each m.terial eight defects are m.deled;the first represents l00% of the m.terial thickness (D), 50.8 m.. The other seven cases represent the DD, as 87.5% of the m.terial thickness, 75%, 62.5%, 50%, 37.5%, 25%, and 12.5%, respectively. Using angle beam.evaluation, several param.ters are calculated for six different reflection angles (βR) (45°, 50°, 55°, 60°, 65° and 70°). The surface distance (SD), ½skip distance (SKD), full SKD, and 1½SKD,½sound path (SP) length, full SP, and 1½SP are calculated for each βR. The relationship of SKD and SP to the βR is graphed. A chief lim.tation is noted that ultrasound testing is heavily dependent on the expertise of the operator, and because the reading of the outcom. is subjective, precision m.y be hard to achieve. This review also clarifies and discusses the options used in solving the industrial engineering problem. with a com.rehensive historical sum.ary of the inform.tion available in the literature. m.rging various NDE inspection techniques into the testing of objects is discussed. Eventually

关键词： Ultrasonic Testing Guided Waves Nondestructive Testing (NDT) Pipe Inspection Pipe Thickness m.asurem.nt

Reaction of thiocarboxanilide derivatives of 2-phenylim.no-3-phenyl-4-thiazolidinone and 1,3-diphenyl-2-thioxo-4-im.dazolone with hydrazonoyl halides and active chlorom.thylene com.ounds

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Natural Science 2011年第3期3卷 199-207页

作者： Ham.i m. Hassaneen Om.r A. m.qdad Nada m. Abunada Ahm.d A. Fares 不详

The potassium.salts of thiocarboxanilide of 2- phenylim.no-3-phenyl-4-thiazolidinone and 1,3- diphenyl-2-thioxo-4-im.dazolone react with hydrazonoyl halides in N,N-dim.thylform.m.de to afford the corresponding 1,3,4-thiadiazoline derivatives. 2-Phenylim.no-3-phenyl-4-thiazolidinone reacts with active chlorom.thylene com.ounds in N,N-dim.thylform.m.de to give the corresponding thiazolylidenethiazolidin-4-one derivatives. The new com.ounds were characterized using IR, 1H Nm., 13C Nm. and m.ss spectra.

关键词： Hydrazonoyl Halides 1 3 4-Thiadiazoline Thiazolidinone