科技期刊条码和邮发代号著录问题

介绍了期刊条码及排版位置、邮发代号及著录方式,调查了80种军队医学期刊条码和邮发代号著录现状和存在的主要问题,建议加强期刊条码和邮发代号著录的宣传教育,规范期刊条码和邮发代号的管理,使期刊编辑人员掌握期刊条码的编制和邮发代号的著录方法,以提高科技期刊的整体质量和水平。     

初始应力释放对泥岩强度影响

本文通过对重塑土进行同一围压下的K0固结,然后对其进行应力未释放和释放后的不固结不排水试验。试验结果表明,应力未释放的试样强度参数明显高于应力释放后所测强度参数;测定原状土的强度参数时,其先期固结压力的确定是非常有必要的。     

论短跑运动员的放松技术

放松技术是影响短跑运动成绩的重要因素之一，放松技术能增加肌肉收缩力量，增大步长和加快频率，能促进全身血液循环，使肌肉快速收缩所需要的能量尽快得到补充，同时把肌肉收缩代谢的产物及时运送到肺和肾，最后排出体外，为肌肉收缩创造有利条件。因此，放松技术是提高短跑速度的基础，增强速度耐力的关键。     

对影响铅球成绩关键因素的再探讨

通过对推铅球技术的演变过程和动作技术的力学分析与研究发现:现代推铅球技术的“出手角度”,往往低于传统的理论角度(38-°42°);“出手速度”是影响铅球成绩最重要的因素,在一定范围内出手角度对其影响不大。只有重视出手速度的教学与训练,才能优化提高掷铅球的成绩。     

我国男子跳马难度发展现状及推手技术分析

分析了我国男子跳马前手翻类、侧手翻类、踺子类3种类型难度发展现状与发展前景,比较和分析了这3种类型推手技术的运动学规律及其特点,旨在为改进和提高我国男子跳马推手技术,进一步发展新的难度系列动作提供参考依据。     

生理/心理类型受害者与社会预防导泄机制

因冲动而犯罪的罪犯、因脾气暴躁而形成的家庭施暴者、因攻击型人格而造成的人际关系不良者等生理／心理类型的人，实际上是以先天的神经系统、内分泌系统类型为基础而形成的气质——性格类型与社会行为规范相冲突的受害者。解决问题的办法不能仅靠惩罚、限制自由或道德谴责，应当从社会学角度探索一种心理能量释放机制，并从社会工作政策方面建立一种符合心理学原理的预防措施。     

网络小说的魅力与特点

与纯文学体系的小说相比,网络小说的美学和艺术特点体现在“都市压力”的虚拟性释放、经典式爱情的虚拟性复活以及时空结构的审美张力和情节动力等视域。网络小说之所以呈现出与传统小说不同的美学分野——现代人改写历史、颠覆历史的创造冲动,其背后有三重文化动因,即他者的眼光、广博而杂糅的文化背景以及强烈的平民立场。但是,当前网络小说也面临着历史的拐点,显现出多重危机：商业化危机、被纯文学收编的危机以及网络小说的理论危机。目前,大多数网络小说创作尚处于不自觉状态,需要相关理论的思考与深化。     

Strategies for engineering advanced nanomedicines for gas therapy of cancer

As an emerging and promising treatment method, gas therapy has attracted more and more attention for treatment of inflammation-related diseases, especially cancer. However, therapeutic/therapy-assisted gases (NO, CO, H₂S, H₂, O₂, SO₂ and CO₂) and most of their prodrugs lack the abilities of active intratumoral accumulation and controlled gas release, resulting in limited cancer therapy efficacy and potential side effects. Therefore, development of nanomedicines to realize tumor-targeted and controlled release of therapeutic/therapy-assisted gases is greatly desired, and also the combination of other therapeutic modes with gas therapy by multifunctional nanocarrier platforms can augment cancer therapy efficacy and also reduce their side effects. The design of nanomedicines with these functions is vitally important, but challenging. In this review, we summarize a series of engineering strategies for construction of advanced gas-releasing nanomedicines from four aspects: (1) stimuli-responsive strategies for controlled gas release; (2) catalytic strategies for controlled gas release; (3) tumor-targeted gas delivery strategies; (4) multi-model combination strategies based on gas therapy. Moreover, we highlight current issues and gaps in knowledge, and envisage current trends and future prospects of advanced nanomedicines for gas therapy of cancer. This review aims to inspire and guide the engineering of advanced gas-releasing nanomedicines.     

多媒体信息发布系统在大学图书馆的设计与应用——以清华大学人文社科图书馆为例

多媒体信息发布系统是一种应用型媒体整合传播系统,它是直接面向用户提供公共服务、保障信息畅通的重要手段。作为一座新近建设的图书馆,清华大学人文社科图书馆设计并应用了多媒体信息发布系统。该系统主要包括节目编辑和发送、节目管理和发布两大模块,其发布内容融合了多种媒体信息资料,在图书馆各功能区域得到广泛应用,取得了良好成效。在设计与应用多媒体信息发布系统的过程中,我们应对多媒体信息发布系统的优缺点有清晰认识,要在充分发挥多媒体信息发布系统优势的同时,实现多媒体信息发布系统与其他媒体的优势互补。     

Consistency of performances in the Tkatchev release and re-grasp on high bar

The Tkatchev on the high bar is a release and re-grasp skill in which the gymnast rotates in a direction during flight opposite to that of the preceding swing. Since the release window is defined as the time during which the gymnast has appropriate linear and angular momentum to ensure the bar can be re-grasped, it was speculated that the release windows for this skill would be smaller than for dismounts that are less constrained. One senior male gymnast competing at national standard performed 60 Tkatchev trials. A four-segment planar simulation model of the gymnast and high bar was used to determine the release windows in 10 successful and 10 unsuccessful performances of the Tkatchev recorded using a Vicon motion analysis system. Model parameters were optimized to obtain a close match between simulations and recorded performances in terms of rotation angle (1°), bar displacements (0.01 m), and release velocities (1%). Each matched simulation was used to determine the time window around the actual point of release for which the model had appropriate release parameters to complete the Tkatchev successfully. The release windows for the successful trials were small compared with those of dismounts. The unsuccessful trials were associated with later release and later timing of the actions at the shoulders and hips.