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| 1 | Basic characteristics for estimation polynitrogen compounds efficiency显示文摘 | Smirnov Alexandr Lempert David Pivina Taty- ana | 2011 | Central European Journal of Energetic Materials2011,8,4: | 1 |
| 2 | Energetic performances of solid composite propellants显示文摘 | David Lempert Gelii Nechiporenko George Manelis | 2011 | Central Europe- an Journal of Energetic Materials2011,8,1: | 1 |
| 3 | The Proposed Constitution of Ukraine: Continuity Under the Banner of Change: With a Model Consti- tution for Authoritarian to Democratic Transitions显示文摘 | David Lempert | 1993 | The Journal of Post-Soviet Democratization1993,,2: | 1 |
| 4 | Estimation of the Ballistic Effectiveness of 3,4-and 3,5-Dinitro-1-(trinitromethyl)-1H-Pyrazoles as Oxidizers for Composite Solid Propellants显示文摘The experimental values of the enthalpy of formation of two isomeric 3,4-and 3,5-dinitro-1-(trinitromethyl)-1H-pyrazoles have been obtained(261.5±5.0and 246.4±6.7kJ/mol for crystalline 3,4-and 3,5-dinitro-1-(trinitromethyl)-1H-pyrazoles,respectively).The ballistic effectiveness of these potential oxidizers in composite solid propellants was studied.It is shown that these two oxidizers may be successfully applied in metal-free compositions or with a small content of metal.For the bottom stage 3,4-dinitro-1-(trinitromethyl)-1H-pyrazole is a bit better than 3,5-dinitro-1-(trinitromethyl)-1H-pyrazole,for the upper stage the both oxidizers show the equal ballistic parameters.These oxidizers allow to create metal-free solid composite propellants with the binder percentage not lower than 19%(volume fraction),with I3spequal to 256.5-257.0sat density equal to 1.72-1.74g/cm^3. | LEMPERT David B. DALINGER Igor L. SHU Yuan-jie KAZAKOV Anatolii I. SHEREMETEV Aleksei B. | 2016 | 火炸药学报2016,39,2: | 1 |
| 5 | Energetic Opportunities of Solid Composite Propellants Containing Some Hypothetic Furazano-[3,4-d]-pyridazine-based Derivatives显示文摘Six furazano-[3,4-d]-pyridazine-based derivatives as main compounds in solid composite propellants have been investigated.It was shown that the use of some furazano-[3,4-d]-pyridazine-based derivatives as main compounds in solid composite propellants can considerably increase ballistic parameters compared with HMX if the compounds under consideration contain difluoramine groups.And the use of the compounds under consideration may be successful only in the presence of an active binder and 10%-30% of AP or ADN as additional oxidizers. | LEMPERT David B. DOROFEENKO Ekaterina M. SHU Yuan-jie JIANG Wei-dong WU Zong-kai WANG Ke LIU Xiao-qiang | 2016 | 火炸药学报2016,39,5: | 0 |
| 6 | 前庭性偏头痛诊断标准(更新):Bárány协会及国际头痛协会共识文件显示文摘本文介绍了由Bárány协会国际前庭疾病分类(International Classification of Vestibular Disorders,ICVD)委员会和国际头痛协会(International Headache Society,IHS)偏头痛分类小组共同制定的前庭性偏头痛(vestibular migraine,VM)的诊断标准。本文包含了部分文献更新,原2012版本的诊断标准仍然不变。诊断标准包括VM和很可能的VM两类。根据常规的IHS流程,VM作为一个新的疾病类型,将首先被纳入第三版国际头痛分类(International Classification of Headache Disorders,ICHD)的附录。随着研究证据的进一步增加,很可能的VM也有待被纳入到未来的ICHD版本中。VM的诊断包括:反复发作的前庭症状、偏头痛的病史、前庭症状与偏头痛症状存在时间关联,且排除其他可能导致前庭症状发生的相关病因。符合VM诊断的症状包括多种类型:如眩晕、头动诱发的头晕伴恶心等,但临床上,上述症状的严重程度须为中度或重度,急性发作的持续时间需在5 min~72 h。 | 邢玥(译) 凌霞(译) 王钰茹(译) 荣良群(审校) 杨旭(审校) Thomas Lempert Jes Olesen Joseph Furman John Waterston Barry Seemungal John Carey Alexander Bisdorff Maurizio Versino Stefan Evers Amir Kheradmand David Newman-Toker | 2022 | 神经损伤与功能重建2022,17,10: | 0 |
| 7 | Bárány协会:“颈性头晕”的观点显示文摘本文介绍了Bárány协会分类监督委员会(COCS)对颈性头晕(有时也称为颈性眩晕)的观点。这些内容首先由多个领域的专家进行了初步审查,之后由Bárány协会COCS进行进一步审定。基于当前已发表的文献,Bárány协会COCS认为,自身运动的错觉(眩晕-旋转感或其他)与颈部病理和(或)颈部疼痛症状(通过影响颈椎、软组织结构或颈神经根)之间机制的关联尚缺乏证据支持。当头颈部联合运动诱发出现旋转的错觉时,其原因可能是尚未确诊的常见前庭疾病(如偏头痛或BPPV),也可能是较少见的中枢性前庭疾病(包括急性起病的危急状况,例如椎动脉夹层伴后循环卒中以及极其罕见的椎动脉压迫综合征)。同时,COCS指出,迄今为止,偏头痛(包括前庭性偏头痛)为颈部疼痛和前庭症状同时出现的最常见原因。而且,在几乎所有前庭疾病中,头部运动常会导致患者症状的加重,推测在这些前庭疾病患者中常见颈部肌肉紧张度的增加(因果关系尚不清楚)可能与头部运动减少有关。此外,还存在一些尚未探索的理论机制问题,如颈部疼痛可能促发血管迷走反射、心脏抑制反射继而通过晕厥前机制导致短暂的定向障碍和(或)失衡。COCS提出还有一些少见的案例,如那些颈部肌肉痉挛伴模糊的空间定向障碍和(或)失衡感的患者是否确实存在颈部本体感觉受损机制,值得进一步深入研究。展望未来,通过严格纳入和排除标准,以减少敏感性而增加特异性的方法进行研究对象的选择,进一步采用双盲、安慰剂对照的研究方案将更为理想。为进一步促进“颈性头晕/眩晕”的研究,在进行设计机制和治疗的对照研究时,亦应考虑到那些重要的混杂因素相关问题。基于此,目前的Bárány COCS并未提出用于研究之外的临床初步诊断标准。相信随着新的研究证据的不断积累,这一观点将可能会发生改变。 | 王钰茹(译) 邢玥(译) 冯宇菲(译) 凌霞(译) 隋汝波(审校) 杨旭(审校) Barry M.Seemungal Yuri Agrawal Alexander Bisdorff Adolfo Bronstein Kathleen E.Cullen Peter J.Goadsby Thomas Lempert Sudhir Kothari Phang Boon Lim Måns Magnusson Hani J.Marcus Michael Strupp David Susan L.Whitney | 2023 | 神经损伤与功能重建2023,18,12: | 0 |
| 8 | Energetic Abilities of Solid Composite Propellants Based on 3,4,5-Trinitropyrazole and Ammonium Dinitramide显示文摘The investigation aims at the expansion of the basis of formulations of solid composite propellants by introducing new compositions with lower sensitivity to mechanic impact and improved thermal stability.The formulations based on trinitropyrazole(TNP)contains a binder(a hydrocarbon or active one),aluminum and inorganic oxidizer ADN.The results show that a binary formulation TNP+active binder(18%-19%)(volume fraction)with no metal is well designed which would achieve high specific impulse(at Pc∶Pa=40∶1)of 248s,high density of 1.80g/cm3 and combustion temperature Tcabout 3 450K.In terms of energy,metal-free compositions with TNP lose a bit to those with HMX,only if HMX fraction in formulation is higher than 45%-50%. | LEMPERT David B. CHUKANOV Nikita SHU Yuan-jie | 2016 | 火炸药学报2016,39,3: | 0 |