北京市市区采暖期二氧化硫严重超标的原因和对策

北京市区采暖期二氧化硫污染严重,大大超过国家二级标准。为保证低硫低灰份优质煤推广工作的顺利进行,必须颁布北京市煤质地方标准以及锅炉大气污染物排放地方标准,并争取国家批准北京市提高对二氧化硫的收费标准。     

Zimbabwe's troubles

This paper is situated within the global growing interest in the security of the Persian Gulf. Following the call for a pre-emptive air strike by the United States and Israel against Iran to crush or damage extensively its nuclear facilities, the debate on whether or not such an attack is justified and feasible, and what alternative strategy will yield the best result, had become of great concern among scholars around the world. This paper positions itself as an antagonist to the pre-emptive air strike option. It argues that the consequences of a pre-emptive air strike and its failure margin considering the location of the targeted facilities and the political situation in Iran have been seriously underestimated. It recommends that instead of a pre-emptive air strike, the Iranian nuclear programme crisis can be solved in a peaceful and more logical way, through technical isolation.     

低NOx浓淡火焰对冲燃烧技术及装置的研究

分析ＮＯｘ的形成与危害，研究浓淡火焰对冲燃烧抑制ＮＯｘ生成机理，探讨浓淡火焰对冲燃烧技术与装置。     

不同铺装材料的颗粒物干沉积效果研究

以水泥板为对照项,根据干沉积量,研究了不同气象条件下水面、碎石、陶粒、卵石和塑胶垫等材料的固尘效果。结果表明,碎石等固体铺装材料的干沉积量与材料表面的粗糙度呈正相关性,与风速呈负相关性;碎石固尘效果好、价格低廉,是北方缺水城市优先选择的铺装材料。     

关于国内客运航班延误的几个法律问题--兼及相关法律的完善

在航空运输中,由于多种原因,航班延误难以避免,因航班延误引起的纠纷时有发生.现行的民航法及相关法规对于航班延误的定义、承担延误的责任原因、承担责任的方式、延误赔偿限额等问题或者没有规定,或者规定太原则、笼统、不统一,缺乏可操作性.时至今日,关于航班延误的诸多问题仍然不能"依法解决".有关部门应当尽快制定并完善相关法律法规,使航班延误的处理工作步入法制化的轨道,依法解决航班延误的有关问题.     

Searching for Kin Amidst Tragedy—Disaster Victim Identification Operations for US Bangla Flight 211

The nature of air disasters includes factors that exacerbate challenges in the identification process. Of the 49 deceased in the US Bangla air crash in Kathmandu, Nepal, four were intact, 11 presented with burn injuries, another 11 presented with partial charring, and 23 were completely charred. Personal belongings were useful in the identification phases for all types of victims. Fingerprints were obtainable and useful in intact victims and victims with less severe burn injuries; medical and surgical information was useful in bodies with burn injuries; finally, dental findings were useful in cases of extensive charring. Other useful methods in the process included marks of identification, physical features, and exclusion. In certain resource‐limited settings, especially in closed population disasters, where scientific identification (DNA, dental records, etc.) is not currently available, personal belongings, clothing, and physical findings analyzed by an identification team using a structured organization may be cautiously used as the primary means of identification.     

论航空运输中对旅客的损害赔偿责任

航空旅客运输有国际国内之分,在法律适用上有所差异;国际航空运输中主要适用华沙体系和1999年《蒙特利尔公约》,国内航空运输则适用各国国内法的规定。从国际航空公约和我国航空法对旅客损害赔偿责任体系的比较看,二者对旅客损害赔偿责任期间、损害构成、赔偿主体等规定模糊,我国航空法对旅客损害赔偿的归责原则规定的比较单一,赔偿标准较低。我国应当结合国际航空条约中的有益规定和国内相关法律中的规定对航空法进行修订,这是健全和完善我国航空法体系的必由之路。     

Shot Through the Heart—Firepower and Potential Lethality of Air Weapons

Although certain air weapons attain muzzle velocities comparable to some firearms, their successful use for committing suicide is rarely seen. Herein, we report a case of a young female died shortly after urgent admission to the hospital with penetrating gunshot wound to the chest. The autopsy revealed perforation of the pericardium and two perforative defects to the right heart ventricle. Injury was inflicted by a 0.177 caliber pellet, fired from an air rifle found near her body. Investigation ruled the death as suicide. The used air rifle fired the pellet with the energy density of 1.9 J/mm², substantially above the threshold for inflicting injury. The pellet penetrated through two layers of cotton fabric and several layers of tissue to inflict fatal injury to the heart. In addition, we provide an insight into the wounding potential of air weapons, which illustrates the need for greater caution in handling those devices.