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汽车与新动力 2015年第6期47卷 50-53页

作者： v.Kale B.Raju v.dhiman 孙丹红

通过增大发动机的缸径和行程,以及其他设计改造来提升发动机的功率。通过优化冷却水套设计和水泵流量参数解决与冷却有关的问题。在保持发动机机体外形尺寸不变的情况下增大缸径会导致气缸体和气缸套之间的冷却水套减小,从而导致热负荷... 详细信息

通过增大发动机的缸径和行程,以及其他设计改造来提升发动机的功率。通过优化冷却水套设计和水泵流量参数解决与冷却有关的问题。在保持发动机机体外形尺寸不变的情况下增大缸径会导致气缸体和气缸套之间的冷却水套减小,从而导致热负荷增加,采用优化冷却水套和改造水泵设计。来提高发动机的冷却能力。内燃机冷却系统包括具有复杂结构的水套。针对这些复杂的系统,计算流体动力学(CFD)模拟在短时间内就可以完成。CFD理论上具有模拟任何物理条件的能力。针对1款直列3缸水冷式柴油机,采用STAR CCM+软件8.04版本进行了有效优化。通过k-ε湍流模型,研究了冷却水流速和温度分布。采用UG NX 7.5软件对气缸体和气缸盖进行了模拟。

关键词：优化气缸体气缸盖冷却系统 CFD模拟

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Clinical validation of Global Coagulation Tests to Guide Blood Component Transfusions in Cirrhosis and ACLF

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Journal of Clinical and Translational Hepatology 2021年第2期9卷 210-219页

作者： Madhumita Premkumar Rohit Mehtani Smita Divyaveer Kamal Kajal Anand vKulkarni Syed Ahmed Harmanpreet Kaur Harpreet Kaur Radhakrishna dhiman Ajay Duseja Arka De Departments of Hepatology Postgraduate Institute of Medical Education and ResearchChandigarhIndia Nephrology Postgraduate Institute of Medical Education and ResearchChandigarhIndia Anesthesia and Intensive CarePostgraduate Institute of Medical Education and ResearchChandigarhIndia Department of Hepatology Asian Institute of GastroenterologyHyderabadIndia Medicine Postgraduate Institute of Medical Education and ResearchChandigarhIndia

Background and Aims:Patients with cirrhosis and acuteon-chronic liver failure(ACLF)may have bleeding complications and need for invasive ***-of-care(POC)coagulation tests like thromboelastography(TEG)and Sonoclot may be better for guiding patient management than the standard coagulation tests(SCTs),like prothrombin time,platelet count and international normalized ***:We prospectively compared and validated the POC tests and SCTs in 70 persons with ACLF and 72 persons with decompensated cirrhosis who had clinical bleeding and checked for episodes of re-bleeding and transfusion *** assessed pre-procedure requirement of blood components when correction was done based on an SCT or POC ***:Episodes of bleeding were seen in 45%and 28%of ACLF and cirrhosis patient,respectively(p=0.036),with the major site of bleeding being gastrointestinal(31%and 16%,respectively).Platelet counts correlated with TEG-maximum amplitude in cirrhosis(p=0.045)and prothrombin time correlated positively with TEG-reaction(R)time(p=0.032),TEG-Clot kinetics(K)time(p=0.042),Son-activated clotting time(p=0.038)and negatively with clot rate(p=0.043)in ACLF,making these correctable target variables in POC transfusion *** 223 procedures,transfusion of fresh frozen plasma and platelet concentrate was reduced by 25%(p=0.035)and 20.8%(p=0.045)by using a POC strategy in 76 *** of deranged Son-activated clotting time and TEG-reaction time was noted in 68%and 72%after 24 h of fresh frozen plasma transfusion in ACLF and 85%and 80%in cirrhosis,***:Our study clinically validates that POC tests can better detect coagulation defects and transfusion thresholds in ACLF and cirrhosis,whereas use of conventional tests appear to be less suitable in patients with clinical *** Registration:NCT04332484.

关键词： Coagulation Cirrhosis ACLF validation Sonoclot Thromboelastography

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Comparison of conventional and Hang-back methods of inferior oblique recession in v-pattern strabismus with inferior oblique overaction

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International Journal of Ophthalmology(English edition) 2020年第6期13卷 985-990页

作者： Kamlesh AnAND Ankita Bharadwaj Shweta dhiman Yashpal Goel Anju Rastogi Richa Agarwal Manisha Misthra Prateek Kumar Department of Ophthalmology Guru Nanak Eye CentreMaulana Azad Medical CollegeNew Delhi 110002India

AIM:To compare outcomes of conventional and Hangback methods of inferior oblique(IO)recession in v-pattern strabismus with inferior oblique overaction(IOOA).METHODS:Comparative randomized study was conducted consisting of 50 patients,age 6 to 35 y having v-pattern strabismus[>15 prism diopter(PD)]with *** were divided equally in two groups and underwent IO recession,group A by conventional method and group B by Hang-back *** evaluated were reduction in v-pattern and IOOA,shift in torsion,improvement in binocular *** was a residual v-pattern of less than 10 PD at 1 y of follow ***:The mean v-pattern preoperatively and postoperatively at 1 y was 24±5.4 PD and 4.2±3.51 PD in group A and 23.44±6.44 PD and 5.76±3.8 PD in group B *** mean reduction in v-pattern was 20±6.78 PD in group A and 18.2±5.48 PD in group *** mean correction of IOOA was 18.48±3.13 PD in group A and 16±2.93 PD in group *** shift in extorsion was 3.08±1.8 degree in group A and 3.72±2.14 degree in group ***:Both the procedures achieve a significant and comparable reduction in v-pattern and ***-back recession being a landmark free surgery eliminates the need for intrascleral suturing thereby reducing the risk of scleral perforation with possible postoperative adjustment of *** may be considered as a good alternative for IO recession in patients of v-pattern strabismus with mild to moderate amount of IOOA.

关键词： v-pattern inferior oblique overaction Hang-back recession conventional recession

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