冷战时期苏联的石油与天然气:效能和限度——俄罗斯石油:军事战中的效能

20世纪60年代以来,苏联以石油与天然气生产和出口大国的面目出现,西伯利亚在其中起到支撑性的作用。苏联油气攻势是在欧洲两极格局形成后逐渐展开的。进入80年代,美国的油气遏制对苏联产生了很大影响。     

8例利多卡因过敏性休克死的血药浓度分析

目的研究利多卡因过敏性休克死者利多卡因血药浓度及其与死因的关系。方法采用高效液相色谱法(HPLC),分别对使用利多卡因麻醉术中各项指标均正常的8例术中因利多卡因过敏性休克死者的血液和11例顺利完成手术患者的血液进行利多卡因浓度的检测,对比分析两者结果。结果 8例死者利多卡因血药浓度(1．61mg± 0．45mg／L)低于11例正常患者利多卡因血药浓度(2．44mg±0．47mg／L)。结论利多卡因过敏性休克死者血药浓度在正常值范围内,与发生过敏性休克致死无关。     

中毒死者体内毒鼠强的GC/MS-SIM分析

一 1 9岁男子赌气吞服一白色粉末 ,1 0min后口鼻流血、抽搐 ,迅速送医院 ,经催吐、透析等方法治疗 5天后死亡。根据中毒症状和经验怀疑为毒鼠强中毒。用GC/NPD检验肝中毒鼠强有干扰。改用GC/MS -SIM法分析 ,心血、肝和胃组织中全部检出毒鼠强 ,浓度分别为 0 5 1 μg .mL- 1、0 4 5 μg .g- 1和 0 33μg .g- 1,和文献结果在同一水平。GC/MS -SIM对复杂检材中低含量毒鼠强测定具有更高的选择性 ,也具有较高的灵敏度 ,同时进一步证实毒鼠强排泄较慢 ,经过较长时间后在体内分布比较均匀     

The European Union and its energy security challenges: engagement through and with networks

Energy security remains a vital issue for the European Union (EU), even more so in the wake of the events that unfolded in early 2014 in Ukraine. The EU's already fragile position in the international energy arena in terms of security of supply appears to be more uncertain than ever after its umpteenth fallout with its historic energy supplier, Russia. This situation is untenable and calls for swift and decisive action to adequately tackle the issue once and for all. The article looks at the creation of a single EU energy market through the integration of energy networks in the EU. This article then examines various ways to diversify its energy supply, whether through increasing the import of liquefied natural gas or through its relations with the Eurasian Union. It then explores the International Energy Charter as an example of the EU's engagement with transnational policy networks. It concludes that from energy transit, to technology transfer, to investment protection, energy and trade present interplays across various fields. Improvements can be made to the EU trading system to ensure greater energy security and more efficient energy markets.     

21世纪初国际能源格局及今后的中长期变化 ——兼论日本能源安全的出路与困境

为了应对全球气候变化，需对能源安全概念进行“范式转换”，即能源安全不仅要包括能源供需矛盾、能源供需网络的脆弱性和潜在风险，而且要与环境安全、水安全相结合，形成“广义的能源安全”概念。当前，一系列新因素正在使国际能源格局和能源范式发生重大变化：福岛核电站特大事故严重影响了全球公众对核安全的信心，今后世界各国发展核电会更加谨慎；可再生能源日益发展与普及；气候变暖正在改变能源资源与环境资源相加的自然资源“总格局”；非常规油气资源日益开发、天然气地位上升以及美洲能源供给新轴心崛起；“可燃冰革命”及海洋能源进一步开发。在福岛核事故后，日本能源安全既面临风险，又面临机遇。今后日本能源安全战略的动向主要是：坚持发展核电，但会更加谨慎稳健；积极开展能源外交，实现能源来源多元化；在一次能源结构中增大天然气的比重；大力发展可再生能源和节能；大力开发可燃冰等海洋能源资源。此外，当前日本政府错误的周边外交政策将成为日本能源安全最大的潜在风险，可望长期执政的自民党政权采取的鹰派民族主义政策，终将给日本惹祸，首当其冲的祸害对象就是日本的能源安全。     

UPLC分析大鼠血浆中阿齐沙坦浓度及其初步药代动力学研究

目的 采用UPLC建立大鼠血浆中阿齐沙坦浓度的测定方法,并探究阿齐沙坦在大鼠血浆中初步药代动力学情况。方法 选用缬沙坦为内标,色谱柱Kinetex C18（100 mm×2.10 mm,1.7 μm）,紫外检测波长254 nm,流动相为水-乙腈-冰醋酸（容积比为57∶42∶1）,流速0.2 mL/min,柱温25 ℃,进样量2 μL,建立在大鼠血浆中阿齐沙坦的分析方法。在此方法的基础上,经大鼠尾部静脉注射阿齐沙坦0.5 mg/kg,测定不同时间点其血浆浓度。实验数据运用DAS 2.1软件分析,得其主要药代动力学参数。结果 大鼠血浆中阿齐沙坦的线性范围为0.05～12.5 mg/L（r=0.999 9）,定量下限为0.05 mg/L,低、中、高浓度（0.1、1.0、10.0 mg/L）的提取回收率分别为（88.6±3.2）%、（86.5±2.2）%、（85.7±1.3）%（RSD<5%）,日内、日间精密度RSD不大于10%,准确度在85%~100%范围内。通过DAS 2.1软件拟合,阿齐沙坦的分布半衰期t1/2（α）为（0.39±0.04）h,消除半衰期t1/2（β）为（4.22±0.12）h,药时曲线下面积（AUC0-t）为每小时（53.25±2.46）mg/L。结论 本实验建立的UPLC操作快速、简单,且专属性强,适用于阿齐沙坦在大鼠血浆中浓度的分析及其药代动力学的探究。     

Negotiating the Marcellus: The Role of Information in Building Trust in Extractive Deals

New technology has expanded the opportunities for energy companies within the United States, often bringing them into populated communities and requiring them to negotiate deals with landowners. This case study focuses on how one group of landowners in northeastern Pennsylvania creatively reimagined the process of negotiating in a natural gas deal. They used collective bargaining for leverage, and the Internet and social media to level the informational playing field. These techniques allowed them to develop trust within the group and ultimately with one company, as they sought to protect their environment and enhance their financial gain.     

大鼠吸入原油和汽油对器官损害的组织形态学变化的比较性研究

观察大鼠吸入原油蒸气和汽油蒸气对器官损害的组织形态学变化,可为法医学鉴定和医学的防治提供依据。健康成年SD大鼠25只,随机分为正常对照组、原油实验组、93号无铅汽油实验组、死后对照组,每组5只。建模成功后,在光镜下观察大鼠主要器官的组织形态学变化。动物模型的制作均获得成功,光镜下观察心脏、肺脏、肝脏、肾脏、脑组织细胞形态均有明显的异常改变。大鼠吸入原油蒸气和汽油蒸气对主要器官有明显的损害作用,为法医学鉴定提供了有价值的依据。     

过敏性休克死亡机体内白三烯变化的研究

本研究采用反相洗脱高效液相色谱(HPLC)法检测青霉素和血清过敏休克致死机体中自三烯(Leukotrienes,LTs)。(1)过敏休克前血中未检出LTs的任一组分,休克死亡后检出LTB_4和LTD_4。青霉素过敏血中LTB_4含量是10.10±4.76(ng/ml),LTD_4是26.75±6.55(ng/ml),未检出LTC_4和LTF_4。(2)正常动物肺,脾和肾中均未检出LTs。过敏休克的肺,脾和肾中不仅检出LTB_4和LTD_4,而且在不同脏器中呈规律分布。青霉素过敏肺中LTs_4是23.75±3.80(ng/g),LTD4是58.58±11.39(ng/g))未检出LTC_4和LTE_4。脾中仅有LTB_424.36±3.62(ng/g)。肾中仅有LTD_12.17±2.55(ng/g)。(3)过敏休克致死机体置室温6或12h,或置冰箱48h再测LTs,未见明显变化。(4)青霉素和血清诱发的过敏休克中,LTs的增加和分布是一致的。本研究提示:LTs含量和分布的变化是过敏性休克所共有,可为过敏性休克急死的法医学死因检定提供有价值的证据。     

A comparison of the use of visible microspectrometry and high performance thin layer chromatography for the discrimination of aqueous inks used in porous tip and roller ball pens

Ink lines made by porous tip and roller ball pens have been examined by high performance thin layer chromatography (HPTLC) and by transmission microspectrophotometry (VM) in the visible region. Better discrimination between apparently similar coloured inks was obtained with HPTLC but VM has value as an additional technique for ink examination.