Captured Kriegsmarine Enigma Documents at Bletchley Park

Abstract

The discovery of intercepts in the Japanese “Orange Translations” regarding the sinking of merchant ships (marus) bearing allied POWs led to the conclusion that the Joint Intelligence Center Pacific Ocean Area (JICPOA) gave latitudes and longitudes of these vessels to the Commander, Submarine Force, Pacific (ComSubPac) knowing that POWs would be killed. An examination of the “Orange Translations” reveals that most of the intercepts are from the Japanese Water Transport Code (2468) system, not the “Maru Code” (JN-11). The author concludes that while JICPOA provided ComSubPac with convoy coordinates, they were unaware of the presence of POWs on the marus.     

顺应环保的新型纤维素纤维

本文介绍符合环保要求的新型纤维素纤维的发展历程、工艺特点、性能水平及今后的发展展望，并对我国的发展提出建议．     

溶剂油在农药领域中的应用

目前溶剂油在农药领域主要用于卫生用农药的气雾剂等产品和在大田农药产品的乳油类等产品上，但由于其存在一些问题，需向着安全环保友好的方向发展。     

Adaptive smooth multicast protocol for multimedia transmission: Implementation details and performance evaluation

In this paper we propose a new single‐rate multicast congestion control scheme named Adaptive Smooth Multicast Protocol (ASMP), for multimedia transmission over best‐effort networks. The smoothness lays in the calculation and adaptation of the transmission rate, which is based on dynamic estimations of protocols' parameters and dynamic adjustment of the ‘smoothness factor’, as well. ASMP key attributes are: (a) TCP‐friendly behavior, (b) adaptive scalability to large sets of receivers, (c) high bandwidth utilization, and finally (d) smooth transmission rates, which are suitable for multimedia applications. We evaluate the performance of ASMP and investigate its behavior under various network conditions through extensive simulations conducted with the network simulator software (ns2). Simulation results show that ASMP can be regarded as a serious competitor of TFMCC and PGMCC. In many cases, ASMP outperforms TFMCC in terms of TCP‐friendliness and smooth transmission rates, while PGMCC presents lower scalability than ASMP. We have implemented ASMP on top of RTP/RTCP protocols in ns2 by adding all the RTP/RTCP protocol's attributes that are defined in RFC 3550 and related to quality of service metrics. Copyright © 2009 John Wiley & Sons, Ltd.     

CASTTGRINDING~:灵活的环保型板坯表面精整工艺

CASTTGRINDINGR○ (铸造温度修磨 )工艺 ,通过对连铸板坯进行在线热精整 ,使其能够将板坯连铸生产与热轧工艺有机地形成一个整体。介绍了 CASTTGRINDINGR○热修磨工艺的主要特点和带来的好处 ,并举例说明与目前在碳钢精整时通常采用的传统式火焰清理设备相比 ,新工艺拥有的主要优点     

钢的环保型NaCl水溶液缓蚀剂的研制

研制了适用做盐水冷冻液和NaCl冷媒的环保型廉价缓蚀荆,在4℃和30℃的1％～25％ NaCl加自来水的盐水溶液中,研制缓蚀剂对低碳钢、低碳锰钢和Cr-Mo钢都有良好的防锈能力,并且在pH值4.O～8.5的塔里木河水中,该缓蚀剂均有缓蚀效果,而以在中性河水中效果最好。     

澳大利亚植物园中的城市生物多样性设计与保护策略

由于景观起源、物理环境条件和社会经济发展的差异,在南北半球,学术界对城市生物多样性及其与生态设计方法的相互作用有着不同的理解。数千年来,澳大利亚本土植物群落在这片大陆繁衍生息,形成了生物多样性极高的独特景观。植物园融合自然和人造元素,具有科研和保育功能,其设计与规划反映了科学知识随时间变化的动态特征,也为研究不同社会群体在过去如何利用和重视植物提供了的独特视角,植物园的生态设计方法反映了重视和保护生物多样性的新愿景。以澳大利亚为例,研究并回顾了植物园在保护生物多样性方面的益处,讨论了为展示生物多样性植物园设计重点的变化,分析了澳大利亚植物园的设计历史、澳大利亚本土生物多样性以及以生物多样性为重点的设计解决方案。为了解澳大利亚当地生物多样性和制定植物园示范保护与策略提供研究框架,为重新思考和加强植物园设计中的"生物多样性"提供新视角。     

Assessing the Antimicrobial Activity of Polyisoprene Based Surfaces

There has been an intense research effort in the last decades in the field of biofouling prevention as it concerns many aspects of everyday life and causes problems to devices, the environment, and human health. Many different antifouling and antimicrobial materials have been developed to struggle against bacteria and other micro- and macro-organism attachment to different surfaces. However the “miracle solution” has still to be found. The research presented here concerns the synthesis of bio-based polymeric materials and the biological tests that showed their antifouling and, at the same time, antibacterial activity. The raw material used for the coating synthesis was natural rubber. The polyisoprene chains were fragmented to obtain oligomers, which had reactive chemical groups at their chain ends, therefore they could be modified to insert polymerizable and biocidal groups. Films were obtained by radical photopolymerization of the natural rubber derived oligomers and their structure was altered, in order to understand the mechanism of attachment inhibition and to increase the efficiency of the anti-biofouling action. The adhesion of three species of pathogenic bacteria and six strains of marine bacteria was studied. The coatings were able to inhibit bacterial attachment by contact, as it was verified that no detectable leaching of toxic molecules occurred.     

居家适老环境建设之环境适老性评估

本文结合真实案例具体阐述居家环境适老性评估的四方面内容:正确认识老年人身体心理特点和需求,理解老年人需要什么样的适老化环境,掌握居家环境适老性评估原则和内容要点,在评估的基础上和每个老人家庭共同制定解决方案。     

认识“环境敏感型”生物大分子

生物技术在现代生活中扮演着越来越重要的角色。本文着重分析了＂环境敏感型＂大分子及大分子体系在特定环境条件下发生的一些特定的物理和化学性质的变化机理以及利用控制大分子构象得到对特定外界因素敏感的大分子或大分子体系。目的是认识＂环境敏感型＂大分子或大分子体系在生物技术产品的分离纯化上的具体应用。