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浇铸或压制活塞的探讨

国外铁道机车与动车 1965年第8期 13-21页

作者： e.M.Rssler 贾玉呈

本文阐述了浇铸和压制铝合金活塞材料的特性。与造形可能性较大的浇铸活塞相比,压制活塞有较好的强度。因此,轿车上的汽油发动机以及较大的汽油和柴油发动机大部份均采用浇铸活塞。但是,在大马力柴油机上,压制活塞因其有较大的强度和延... 详细信息

本文阐述了浇铸和压制铝合金活塞材料的特性。与造形可能性较大的浇铸活塞相比,压制活塞有较好的强度。因此,轿车上的汽油发动机以及较大的汽油和柴油发动机大部份均采用浇铸活塞。但是,在大马力柴油机上,压制活塞因其有较大的强度和延伸率, 因而使用比较安全。根据一些结构不同的发动机长时间的运转情况,以及活塞的损坏情况, 可以看出采用浇铸和压制活塞的可能性。压制活塞的造价一般比浇铸活塞的要高,然而, 由于进一步采用了自动化生产,使很经济地成批生产压制活塞成为可能。在谈到压制活塞时,多次的提到了锻造或压锻活塞以及活塞的材料。关于材料,在参考文献[1]中用代号P(=geprebt)来表示,而本文却用geprebe(压制的)表示。浇铸和压制活塞所用的铝合金,虽然成份相同,但其强度是不同的,而且压制的活塞,在20—35℃的温度范围内,承受作用在活塞上的动应力的情况比浇铸活塞好。因此,压制活塞适用于机械应力和热应力很大的汽油机上,尤其是用在柴油机上。在浇铸活塞上,铸入阻滞膨胀和耐磨的铸铁镶环是比较容易的。因此除了单金属活塞外,在大量的汽油机和柴油机上采用了带有热膨胀自动调节环(或称镶环)的双金属浇铸活塞。由于压制活塞有较高的屈服极限和延伸率,所以在几乎同样好的运转特性下,从损坏情况可以看到,这种活塞对活塞顶部裂纹、活塞环岸的破损和活塞销座支承筋的裂纹,没有浇铸活塞那么敏感,特别对大型发动机上承受高应力的活塞来说,压制活塞对裂纹具有极小的敏感性有着很重要的意义。

关键词：活塞材料机械应力热应力发动机高应力低共熔活塞销承筋柴油机活塞活塞顶部

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内燃机车节油及保护系统

国外铁道机车与动车 1985年第10期 9-12页

作者： John e.Potts 杨洪业

系统的提出和概要本发明涉及内燃机车柴油机的一种保护和节油系统。在寒冷气候条件下,当机车停运时,为了避免柴油机在冷态下起动困难和防止因冷却水结冰而引起柴油机故障,通常需连续运转柴油机,但这是一种极端浪费燃油的办法。然而,如... 详细信息

系统的提出和概要本发明涉及内燃机车柴油机的一种保护和节油系统。在寒冷气候条件下,当机车停运时,为了避免柴油机在冷态下起动困难和防止因冷却水结冰而引起柴油机故障,通常需连续运转柴油机,但这是一种极端浪费燃油的办法。然而,如果我们起动柴油机并使其运转一段足够长的

关键词：继电器输出端传感器导线常闭触点电子元件换能器电子技术触点闭合内燃机车柴油机接触器柴油机组常开触点保护系统

“Babysitting”procedures in proximal nerve trunk injuries:two case reports and a review

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Plastic and Aesthetic Research 2015年第1期2卷 208-212页

作者： Michele R.Colonna Antonio Russo Mariarosaria Galeano Gabriele Delia Giorgio e.Pajardi Francesco Stagno d’Alcontres Department of experimental Specialistic Medical and Surgical Sciences and Odontostomatology University of Messina98121 MessinaItaly Department Hand Surgery Multimedica Hospital20122 MilanItaly Department of Surgical Specialties University Hospital of Messina98125 MessinaItaly Department of Clinical and Community Sciences University of Milan20122 MilanItaly

One of the most important goals in treating proximal nerve injuries is to maintain the function of distal effectors during axonal regeneration.“Babysitting”,that is,connecting the injured nerve to a healthy trunk provides a bypass for distal neural regeneration or *** avoids degeneration of sensory and motor terminations,with minimal donor nerve *** present a technique where a nerve graft is used between ulnar and median nerve through two end-to-side sutures in the distal third of the forearm,in two different cases of proximal ulnar nerve *** patients were young manual workers,the former suffered a total nerve disruption proximal to the elbow following a car.accident and the latter suffered a perineurial scar from a high voltage injury at the proximal third of the *** proximal injury was grafted with a sural nerve in the former and treated by neurolysis in the *** were graded by the Highet-Zachary scale for both sensory and motor *** outcomes of our series were compared to six other case reports in the literature(including median nerves)treated with this *** clinical and experimental data show that babysitting effectively protects distal effectors.

关键词： Denervation end‑to‑side neural repair Martin Gruber anastomosis nerve graft sensory recovery

car-T cell therapy in neuro-oncology: applications and toxicity

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Neuroimmunology and Neuroinflammation 2018年第10期5卷 15-26页

作者： Akanksha Sharma Gustavo De Leon Alyx Porter Marie F Grill Allison Rosenthal Christine e Brown Kristin Swanson Maciej M Mrugala Department of Neurology Mayo ClinicPhoenixAZ 85054USA Division of Hematology-Oncology Mayo ClinicPhoenixAZ 85054USA Mathematical Neuro-Oncology Lab Mayo ClinicPhoenixAZ 85054USA Department of Hematology and Hematopoietic Cell Transplantation T Cell Therapeutics Research LaboratoryCity of Hope Beckman Research InstituteDuarteCA 91010USA.

A new era for cancer treatment has been ushered in with the field of cancer immunotherapy. After initial success with systemic malignancies, several of these promising treatments are being investigated for efficacy with primary and secondary brain tumors. Chimeric antigen receptor (car) T cells are being studied, both with systemic infusion and direct administration to the tumor and into the cerebrospinal fluid, with promising early results. Systemic car-T treatment can have serious systemic and neurological toxicities that are important for the practicing neurologist and neuro-oncologist to know and understand. This review aims to discuss adoptive cell therapies with a focus on car-T treatment. We review use of this therapy in brain cancers, particularly malignant glioma, and provide an overview of the toxicity of car-T treatment and its appropriate management.

关键词： car-T cell immunotherapy brain tumor cytokine release syndrome

DeTeRM INATION OF THe STABILITY CONSTANTS OF COMPLeXeS OF HISTIDINe,SOMe DIPePTIDeS AND TRIGLYCINe WITH Zn(Ⅱ)AND Cd(Ⅱ)USING SMALL-SCALe PH-MeTRIC TITRATIONS

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Chinese Chemical Letters 1991年第9期2卷 723-724页

作者： Ai Ru LU Department of Chemistry,Northwest Normal University,Lanzhou,730070 Leslie D.PeTTIT Jan e.GReGOR School of Chemistry,The University,Leeds LS2 9JT,U.K

A potentiometric study on the complexes of His,Gly-His,ALa-His,Gly-Gly and Gly—Gly—Gly with Zn(Ⅱ)and Cd(Ⅱ)has been ***-scale potentiometric titrations were car- ried out to determine stabil ity constants of complexes at 25℃ with I=0.10 mol dm^(-3)(KNO_3).The com- puter programs SUPeRQUAD were applied for data treatment with satisfactory results.

关键词： Gly DeTeRM INATION OF THe STABILITY CONSTANTS OF COMPLeXeS OF HISTIDINe,SOMe DIPePTIDeS AND TRIGLYCINe WITH Zn AND Cd USING SMALL-SCALe PH-MeTRIC TITRATIONS

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机车三轴转向架的蛇行稳定性

国外铁道机车与动车 1980年第12期 36-45页

作者： R. e. Rinehart 李亚斌

利用一个有11个自由度的线性模型,评价了机车三轴转向架的蛇行稳定性。本文以实验数据证实了模型的预测值,并展示了轮箍断面、一系悬挂刚度和二系悬挂阻尼这些主要参数对蛇行稳定性的影响。

关键词：转向架振型转向装置车底架阻尼率横向减振器侧滚振动横摆三轴

Macroencapsulation Devices for Cell Therapy

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engineering 2022年第6期8卷 53-70页

作者： Wei Liu Yanfang Wang Jinqiang Wang Olivia LLanier Marissa eWechsler Nicholas A.Peppas Zhen Gu Key Laboratory of Advanced Drug Delivery Systems of Zhejiang Province College of Pharmaceutical SciencesZhejiang UniversityHangzhou 310058China Department of General Surgery Sir Run Run Shaw HospitalSchool of MedicineZhejiang UniversityHangzhou 310016China Department of Biomedical engineering The University of Texas at AustinAustinTX 78712USA Department of Biomedical engineering and Chemical engineering The University of Texas at San AntonioSan AntonioTX 78249USA Division of Molecular Pharmaceutics and Drug Delivery College of PharmacyThe University of Texas at AustinAustinTX 78712USA Zhejiang Laboratory of Systems and Precision Medicine Zhejiang University Medical CenterHangzhou 311121China MOe Key Laboratory of Macromolecular Synthesis and Functionalization Department of Polymer Science and EngineeringZhejiang UniversityHangzhou 310027China

Macroencapsulation has been widely used in cell therapy due to its capability to provide immune-privileged sites for implanted allogeneic or xenogeneic *** also serves to provide mechanical and physiochemical support for maintaining cell expansion and promoting therapeutic *** devices such as membrane-controlled release systems,hydrogels,micronee-dle(MN)array patches,and three-dimensional(3D)stents have shown promising in-lab and preclinical results in the maintenance of long-term cell survival and the strengthening of treatment *** studies focus on expanding the applications of these devices to new cell-based areas such as chimeric antigen receptor(car)-T cell delivery,cardiovascular disease therapy,and the exploration of new materials,construction methods,and working principles to augment treatment efficacy and prolong therapy ***,we survey innovative platforms and approaches,as well as translation outcomes,for advancing the performance and applications of macrodevices for cell-based therapies.A discussion and critique regarding future opportunities and challenges is also provided.

关键词： Drug delivery Cell encapsulation Cell therapy Cell transplantation Biomedical devices

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月随心动

英语知识 2012年第4期 9-10页

作者： Mary e.Potter 沈学甫天津城市建设学院

我的两个儿子在他们很小的时候就有了惊人的发现。晚上我们开着车的时候，后座上总会传来孩子们天真稚嫩的惊叹声：“嘿，瞧啊!月亮正跟着我们走呢!”我向他们解释月亮并非真的跟着我们走，却引起了一番争议。他们往往会继续观察一会儿... 详细信息

我的两个儿子在他们很小的时候就有了惊人的发现。晚上我们开着车的时候，后座上总会传来孩子们天真稚嫩的惊叹声：“嘿，瞧啊!月亮正跟着我们走呢!”我向他们解释月亮并非真的跟着我们走，却引起了一番争议。他们往往会继续观察一会儿，然后很平静地给我一个定论：

关键词：人的发现月亮平静

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内燃机车的电力和液力传动——世界范围内的分析

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国外铁道机车与动车 1980年第4期 34-36页

作者： e.Grtner A.Dannehl 韩才元

内燃机车的发展,过去和现在都是同传动装置的发展紧密地联系在一起的。今天,有成就的几乎只有电力和液力传动。这两种传动方式在技术上和经济上哪一种更有利的问题,虽说从一开始就提出来了,但直到今天尚不能作出普遍适用的回答。本文以... 详细信息

内燃机车的发展,过去和现在都是同传动装置的发展紧密地联系在一起的。今天,有成就的几乎只有电力和液力传动。这两种传动方式在技术上和经济上哪一种更有利的问题,虽说从一开始就提出来了,但直到今天尚不能作出普遍适用的回答。本文以一种新的观点参加讨论。其实质是,在世界范围内,对内燃机车的生产和销售的最新情况,作出分析和统计学的评价。

关键词：内燃机车液力传动电力