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Corrosion aspect of dental implants—An overview and literature review

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Open Journal of Stomatology 2014年第2期4卷 56-60页

作者： Anuja Agarwal Amit Tyagi anshuman Ahuja Nishant Kumar Nayana De Himanshu Bhutani Department of Oral and Maxillofacial Surgery ITS Dental College Hospital and Research Centre Knowledge Park III Greater Noida India

The use of metals and their alloys in restorative and implant dentistry dates back to centuries. Titanium (Ti) is one of the most widely used biomaterial for medical implants because of its excellent mechanical properties and exceptional biocompatibility. The good biocompatibility of Ti is related to the thin oxide layer formed on Ti surface. TiO2 is inactive with the surrounding biological environment and quite compatible with living tissues. However, TiO2 layer can be destroyed during movements between implant and bone tissue under loading condition. The localized destruction causes corrosion of the implant, thus, weakening it;and can induce the leak of small metallic particles or ions into living tissues. This article highlights a review of the various aspects of corrosion and biocompatibility of dental titanium implants as well as suprastructures, and the methods to prevent it.

关键词： Implants Corrosion Titanium

Outcome of bone marrow instillation at fracture site in intracapsular fracture of femoral neck treated by head preserving surgery

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Chinese Journal of Traumatology 2017年第4期20卷 222-225页

作者： Nikhil Verma M.P. Singh Rehan UI-Haq Rajesh K. Rajnish Rahul anshuman Department of Orthopaedics. UCMS and Ass. GTBH Delhi. India

Purpose： The aim of present study is to evaluate the outcome of bone marrow instillation at the fracture site in fracture of intracapsular neck femur treated by head preserving surgery. Methods： This study included 32 patients of age group 18e50 years with closed fracture of intracapsular neck femur. Patients were randomized into two groups as per the plan generated via ***. The two groups were Group A （control）, in which the fracture of intracapsular neck femur was treated by closed reduction and cannulated cancellous screw fixation, and Group B （intervention）, in which additional percutaneous autologous bone marrow aspirate instillation at fracture site was done along with cannulated cancellous screw fixation. Postoperatively the union at fracture site and avascular necrosis of the femoral head were assessed on serial plain radiographs at final follow-up. Functional outcome was evaluated by Harris hip score. Results： The average follow-up was 19.6 months. Twelve patients in each group had union and 4 patients had signs of nonunion. One patient from each group had avascular necrosis of the femoral head. The average Harris hip score at final follow-up in Group A was 80.50 and in Group B was 75.73, which was found to be not significant. Conclusion： There is no significant role of adding on bone marrow aspirate instillation at the fracture site in cases of fresh fracture of intracapsular neck femur treated by head preserving surgery in terms of accelerating the bone healing and reducing the incidence of femoral head necrosis.

关键词： Femoral neck fractures Bone marrow Cannulated cancellous screw

Intraoperative blood loss in orthotopic liver transplantation:The predictive factors

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World Journal of Gastrointestinal Surgery 2015年第6期7卷 86-93页

作者： Chandra Kant Pandey anshuman Singh Kamal Kajal Mandeep Dhankhar Manish Tandon Vijay Kant Pandey Sunaina Tejpal Karna Department of Anaesthesiology Institute of Liver and Biliary Sciences

Liver transplantation has been associated with massive blood loss and considerable transfusion requirements. Bleeding in orthotopic liver transplantation is multifactorial. Technical difficulties inherent to this complex surgical procedure and pre operative derangements of the primary and secondary coagulation system are thought to be the principal causes of perioperative hemorrhage. Intraoperative practices such as massive fluid resuscitation and resulting hypothermia and hypocalcemia secondary to citrate toxicity further aggravate the preexisting coagulopathy and worsen the perioperative bleeding. Excessive blood loss and transfusion during orthotopic liver transplant are correlated with diminished graft survival and increased septic episodes and prolonged ICU stay. With improvements in surgical skills, anesthetic technique, graft preservation, use of intraoperative cell savers and overall perioperative management, orthotopic liver transplant is now associated with decreased intra operative blood losses. The purpose of this review is to discuss the risk factors predictive of increased intra operative bleeding in patients undergoing orthotopic liver transplant.

关键词： Liver transplantation Intraoperative bloodloss Liver disease

Carbon and water footprints of major crop production in India

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Pedosphere 2023年第3期33卷 448-462页

作者： Amaresh Kumar NAYAK Rahul TRIPATHI Manish DEBNATH Chinmaya Kumar SWAIN Biswaranjan DHAL Shanmugam VIJAYKUMAR anshuman Debasis NAYAK Sangita MOHANTY Mohammad SHAHID Anjani KUMAR Manoj RAJAK Khitish Chandra MOHARANA Dibyendu CHATTERJEE Susmita MUNDA Pravat GURU Rubina KHANAM Banwari LAL Priyanka GAUTAM Suschismita PATTANAIK Arvind Kumar SHUKLA Nuala FITTON Pete SMITH Himanshu PATHAK Indian Council of Agriculture Research(ICAR)-National Rice Research Institute Cuttack 753006(India) ICAR-Central Sheep and Wool Research Institute Avikanagar 304501(India) ICAR-National Research Centre on Camel Bikaner 304001(India) ICAR-Indian Institute of Soil Science Bhopal 462038(India) Institute of Biological and Environmental Sciences University of Aberdeen23St Machar DriveAberdeen AB243UU(UK)

Scarcity of water and emission of greenhouse gases(GHGs)are the two key environmental issues affecting crop production in *** the carbon footprint(CF)and water footprint(WF)of crop production can help to mitigate the environmental hazards that stem from GHG emissions and water *** CFs and WFs of three major cereal crops,rice,wheat,and maize,were estimated for the year 2014 under the environmental conditions in India,based on national statistics and other data *** CFs(TCFs)of rice,wheat,and maize in India were estimated to be 2.44,1.27,and 0.80 t CO_(2)equivalent ha-1,respectively,and product WFs for rice,wheat,and maize in India were 3.52,1.59,and 2.06 m3 kg^(-1),*** WF was found to be the highest in West India for rice and in South India for both wheat and maize,with the highest irrigation water use in these *** was a positive correlation between TCF and total WF,and hence mitigation of both was possibly simultaneous in various regions in *** measures for mitigating GHG emissions and optimizing water use for rice,wheat,and maize production in India are recommended in this paper.

关键词： cereal crop crop planning green water footprint greenhouse gas emission water productivity water use

SDWAN (Software Defined-WAN) Network Engineering and Project Management

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Semiconductor Science and Information Devices 2020年第1期2卷 17-28页

作者： anshuman Awasthi Engineering Restoration Hardware

Many organizations are struggling to provide high bandwidth and reliable internet connectivity at their branch offices and business locations and getting the most out of their operational *** need for internet connectivity at any branch offices and business locations is not a luxury anymore but is a *** us try to understand how to plan and document the SDWAN(Software Defined-Wide Area Network)implementation in an *** will try to understand why it is essential to implement the new technology instead of investing in the existing MPLS(Multi-Protocol label switching)by taking an example of a retail ***:This project/research was performed using the abilities of Software Defined Network Technology and options available in MPLS(Multi-Protocol Label Switching).The Technical Project management principles were adopted as per PMI(Project Management Institute)waterfall ***/Conclusion:SDWAN technology provides an effective replacement of MPLS network connection for providing WAN connectivity for our office *** is essential to follow a documented process for appropriate vendor selection based on the available features and other listed attributes in the *** be successful in the implementation it is essential to perform a POC(Proof of Concept)in a controlled environment and validate *** provides better network performance and improves reliability as the links operate in active-active function.

关键词： Network engineering SDWAN implementation ROI analysis Technical project management MPLS replacement

湍流槽道中杆状颗粒与拉格朗日拉伸方向的统计研究

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湍流槽道中杆状颗粒与拉格朗日拉伸方向的统计研究

Postoperative Risk of Hepatic Decompensation after Orthopedic Surgery in Patients with Cirrhosis

第十一届全国流体力学学术会议

作者：崔智文 anshuman Dubey 赵立豪 Bernhard Mehlig 清华大学航天航空学院工程力学系哥德堡大学物理系

夹杂颗粒的流动在纸纤维的输运,云层的形成,浮游生物的迁移以及悬浮在大气中颗粒的扩散等问题中具有十分重要的研究价值。其中各向异性的颗粒形状使得颗粒在流体中的运动规律更加复杂。在均匀各向同性湍流中,细长的杆状颗粒的对称轴方... 详细信息

夹杂颗粒的流动在纸纤维的输运,云层的形成,浮游生物的迁移以及悬浮在大气中颗粒的扩散等问题中具有十分重要的研究价值。其中各向异性的颗粒形状使得颗粒在流体中的运动规律更加复杂。在均匀各向同性湍流中,细长的杆状颗粒的对称轴方向与流体的拉格朗日拉伸方向一致。然而,在湍流槽道中,我们发现细长的杆状颗粒在槽道中部与拉格朗日拉伸方向有较好的一致性,但在壁面附近细长的杆状颗粒的方向与拉格朗日拉伸方向的一致性较差。为了解释此现象,本文研究在距离壁面不同高度处的不同长细比的杆状颗粒与拉格朗日矢量(柯西格林张量特征矢量)夹角的概率密度分布函数。其分布函数的结果呈现出明显的以随机脉动主导的小夹角的平台区和与大夹角相关的幂律区。其中,平台区和幂律区之间的临界夹角与颗粒形状长细比呈线性关系。但是,对于不同有限长细比和不同高度位置处的杆状颗粒,其颗粒对称轴的方向始终与拉格朗日拉伸方向存在差异,而此差异在壁面附近更加容易地被观察到。为了进一步探究其背后的力学机制,我们在Jeffery的椭球颗粒转动模型的基础上建立平均剪切与流体速度梯度脉动共同作用的随机过程模型。此模型在靠近壁面的流场区域的预测结果与直接数值模拟的结果相符。同时,本文利用该模型分析了平均剪切与流体速度梯度的脉动对杆状颗粒方向与拉格朗日拉伸方向之间的相关性的影响。

关键词：湍流槽道杆状颗粒拉格朗日拉伸方向

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Journal of Clinical and Translational Hepatology 2016年第2期4卷 83-89页

作者： Eric M.Nyberg Michael Batech T.Craig Cheetham Jose R.Pio Susan L.Caparosa Mary Alice Chocas anshuman Singh Department of Orthopaedics Kaiser PermanenteSan DiegoUSA Department of Research & Evaluation Kaiser PermanentePasadenaUSA Department of Orthopaedics Kaiser PermanenteSan DiegoUSA Department of Orthopaedics University of California at San DiegoSan DiegoUSA

Background and Aims:Previous studies have shown increased hepatic decompensation in patients with cirrhosis undergoing ***,there are little data available in cirrhotics undergoing orthopedic surgery compared to cirrhotics who did not undergo *** aim of this study was to examine the demographics,comorbid conditions,and clinical factors associated with hepatic decompensation within 90 days in cirrhotics who underwent orthopedic ***:This is a retrospective matched cohort *** criteria were cirrhosis diagnosis,age > 18 years,≥ 6 months continuous health plan membership,and a procedure code for orthopedic *** to five cirrhotic controls without orthopedic surgery were matched on age,gender,and cirrhosis diagnosis *** abstraction was performed for demographics,socioeconomics,clinical,and decompensation *** review was performed for *** analysis estimated relative risk of ***:Eight hundred fifty-three orthopedic surgery cases in cirrhotics were matched with 4,263 cirrhotic *** the cases and matched controls,the mean age was 60.5 years,and 52.2% were *** 90 days after surgery,cases had more decompensation compared to matched controls (12.8% vs 4.9%).Using multivariable analysis,orthopedic surgery,a 0.5 g/dL decrease in serum albumin,and a 1-unit increase in Charlson Comorbidity Index were associated with a significantincrease in decompensation within 90 days of ***,chronic obstructive pulmonary disease,and chronic kidney disease were seen with increased frequency in cases *** ***:Cirrhotics who underwent orthopedic surgery had a significant increase in hepatic decompensation within 90 days of surgery compared to matched *** incremental decrease in serum albumin and an incremental increase in the Charlson Comorbidity Index were significantly associated with hepatic decompensation after surgery.

关键词： Cirrhosis Orthopedic surgery

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鲍德里奇奖评选标准中最难的10个问题

中国认证认可 2010年第5期 21-24页

作者：安舒曼·蒂瓦里（anshuman Tiwari）费杨（译）

在过去10年的组织卓越绩效模式培训、咨询和评审中，经常有人问我什么是美国马尔科姆·鲍德里奇全国质量奖评选标准（以下简称“标准”）中最难的问题？哪些问题关系到评选的成功与否？哪些问题是标准中隐含的，但好的审查员会关注的，... 详细信息

在过去10年的组织卓越绩效模式培训、咨询和评审中，经常有人问我什么是美国马尔科姆·鲍德里奇全国质量奖评选标准（以下简称“标准”）中最难的问题？哪些问题关系到评选的成功与否？哪些问题是标准中隐含的，但好的审查员会关注的，或者说是标准的精华？

关键词：评选标准德里鲍

水稻产量及其相关性状的数量性状位点(QTL)鉴定(英文)

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广西农业科学 2008年第5期39卷 561-564页

作者： Deshmukh Rupesh Sonah Humira Tiwari anshuman Mahatman Krityanand Jadhav Srikrishna Kadam Suhas Kesawat Mahipal Reddy Niranjan Deshmukh Nilesh Verulkar Satish Swami Ramanand Tirth Marathwada University Nanded Maharastra 431 606 India Indira Gandhi Agricultural University Raipur 492 012 India

由于大部分水稻育种的最终目标是获得高产、稳产,因此对于育种工作者来说,水稻产量及其构成因素是重要的性状。在大田试验中,采用随机区组设计,设两个重复,对CT 9993-5-10-1-M×IR 62266-42-6-2杂交而得的144份水稻品系DH群体的产量及... 详细信息

由于大部分水稻育种的最终目标是获得高产、稳产,因此对于育种工作者来说,水稻产量及其构成因素是重要的性状。在大田试验中,采用随机区组设计,设两个重复,对CT 9993-5-10-1-M×IR 62266-42-6-2杂交而得的144份水稻品系DH群体的产量及其主要农艺性状的数量性状位点(QTL s)进行定位。采用M APM AKER/QTL1.1软件进行区间定位并估计每个QTL的表型方差的百分比,以LOD阈值>2.4来确定一个QTL的有无。试验鉴定出与6个水稻农艺性状如千粒重、单株产量、株高、穗长、粒宽、粒长宽比有关的23个QTL s,这些QTL s将有助于提高水稻产量,并有利于了解水稻产量性状的遗传调控。

关键词：双单倍体水稻数量性状位点产量性状