Totally found 10149028 items.

  • [期刊] Dark web vendors seek to capitalise on continuing EU migration crisis
    In mid-2018 two vendors began to sell EU asylum access and medical and police identification cards on Undermarket, a dark web market that hosts vendors selling drugs, fraudulent credit cards, hacking services, and other illicit goods. A survey of open web sites by Jane's found multiple comments by users questioning the reliability of Undermarket as a site, with many claiming that it was a scam. Undermarket is much smaller than first-tier aggregate markets such as Dream Market and the likelihood of scamming is high. However, Jane's did not attempt to verify the services on offer on Undermarket.
  • [期刊] 国家自然保护区生物多样性信息系统的开发
    以ArcView GIS 3.2为支撑平台、VB 6.0和Mapobjects组件为开发语言,根据车八岭国家自然保护区生态环境特点和多年调查的生物资源信息资料,建立了基于GIS的车八岭生物多样性信息系统,描述系统的建立过程和开发框架.
  • [期刊] Comparison of Two Models of Family-Based Treatment for Childhood Obesity:A Pilot Study
    Background: Family-based weight loss treatment (FBT) for childhood obesity, the current "gold standard," is typically provided in weekly groups for 6 months. Although this program is considered effective, it poses limitations to treatment engagement, due to time commitment and lack of widespread availability. A guided self-help version of FBT (gshFBT; eleven 20-minute sessions and one 1-hour over 5 months) was developed to circumvent such limitations. The current study examined the comparative efficacy of a 5-month FBT and gshFBT program.Methods: Participants included 50 parent-child dyads enrolled in FBT between 2011 and 2013 and 50 parent-child dyads enrolled in gshFBT between 2009 and 2010. Data were collected at baseline, posttreatment, and 6-month follow-up. Noninferiority analyses were conducted to assess comparative efficacy of changes in parent and child weight status, child nutrition, child physical activity, and drop-out.Results: Results indicated that gshFBT was noninferior to FBT in changes in child BMI z-score, overweight parent BMI, child nutritional intake, child vigorous physical activity, and drop-out. Results did not support noninferiority for changes in moderate to vigorous physical activity.Conclusions: gshFBT is less intensive, more flexible, and may be similarly effective to FBT and could reach a greater proportion of the pediatric overweight population. Further research, including a randomized clinical trial, is needed to confirm these results.
  • [期刊] Brnsted酸型离子液体[Emim]HSO4催化酯化反应的研究
    以吡啶为探针分子,采用红外光谱对合成的离子液体[Emim]HSO4的酸性进行了表征。以[Emim]HSO4离子液体为催化剂研究了乙酸和乙醇的酯化反应。考察了反应温度、反应时间和离子液体/反应物量比对酯化反应的影响,实验得到的优化反应条件为:反应温度40℃,反应时间1h,离子液体:反应物=1:5时,乙酸的转化率为76.73%,乙酸乙酯的选择性为100%。反应后离子液体易于与反应产物分离。
  • [期刊] 煤气化粗渣脱水工艺设计及实施
    为了有效解决煤气化粗渣含水量高、污染环境、运输困难、水资源浪费等问题,通过与现有工艺技术路线比选,结合现场实际和粗渣的自身特点,设计出煤气化粗渣脱水工艺路线并实施。用最简单、占地面积小、能耗低的工艺路线有效解决了粗渣含水量高、水资源浪费等问题,粗渣含水量由60%降至10%以下,每天回收水量约816t,大大缩短了粗渣循环利用的时间,减少了占地面积,使资源最大化合理利用,为企业创造了良好的经济效益。
  • [专利] Gas-barrier packaging material and manufacturing method thereof
    (JP2016193509) PROBLEM TO BE SOLVED: To provide a gas-barrier packaging material that exhibits high oxygen barrier properties and water vapor barrier properties even if an inorganic vapor-deposited layer is not disposed.SOLUTION: A gas-barrier packaging material 10 includes a barrier layer 3. When an infrared absorption spectrum of the barrier layer 3 is measured, a ratio (α/β) of a maximum peak height (β) of light absorption within a range of 1490-1659 cmand a maximum peak height (α) of light absorption within a range of 1300-1490 cmis 0.6 or more, a ratio (β/γ) of a maximum peak height (γ) of light absorption within a range of 1660-1750 cmand the maximum peak height (β) is 1.0 or more, and the ammonia content is 2000 μg or less per 100 cm.SELECTED DRAWING: Figure 1
  • [专利] 硬脂酸锰高岭土热氧-生物可降解复合聚乙烯薄膜的制备方法
    本发明公开了一种硬脂酸锰高岭土热氧-生物可降解复合聚乙烯薄膜的制备方法,首先将硬脂酸猛、高岭土、聚乙烯微粉、氧化聚乙烯蜡按质量比1~3:1~3:1~3:3~6均匀混合,再经双螺旋杆挤出机挤出造粒,获得热氧-生物降解母粒;然后将上述获得的降解母粒与聚乙烯颗粒按质量比2~5:98~95均匀混合,再经薄膜吹塑机吹塑成型,即可获得热氧-生物可降解复合聚乙烯薄膜。本发明的硬脂酸锰高岭土热氧-生物可降解复合聚乙烯薄膜的制备方法,所制得的薄膜具有良好的可持续生物降解能力,该薄膜作为一种新型的环境友好塑料具有较高的应用价值。
  • [专利] 制造水性柔版及凹版的复合白油墨
    本发明涉及一种制造水性柔版及凹版的复合白油墨,它包括下述组成成分:水溶性聚胺酯树脂、稳定剂、二氧化钛、水性丙稀酸树脂、水;所述的组成成分还包括分散剂、抗划剂、消泡剂、乙醇;此复合白油墨对空气污染很小,在用此复合白油墨印刷包装材料时,对印刷工人的人体基本无危害,最重要的时用由此复合白油墨印刷的包装材料包装产品后不会产生有毒有害物质,使包装的产品达到环保卫生标准,安全无副作用。
  • [期刊] A/O两种工况条件下污泥电位的分析研究
    通过模拟水解酸化—好氧工艺,并以模拟印染废水为处理对象,比较分析了在80%和50%回流比下,水解酸化池与好氧池中污泥电位的变化,探讨了最适回流比.结果表明,回流比为80%的回流工艺的污泥电位以及污泥性质优于回流比为50%回流的工艺.
  • [专利] 一种甲醇制备并精制乙醇的工艺
    本发明公开了一种甲醇制备并精制乙醇的工艺,包括,(1)甲醇羰基化合成醋酸(2)将醋酸与氢气混合并气化得到原料混合气,去除原料混合气中的粉尘与液滴;(3)在加氢催化剂的作用下,使去除粉尘和液滴的原料混合气进行反应;(4)冷却所述步骤(3)的反应物,并分离得到粗乙醇,(5)粗乙醇先脱轻、再中和、然后提纯和脱水得到精制乙醇。本发明的加氢催化剂包括碳酸钙和/或碳酸钡。提高了乙醇的选择性,减少了副产物丙酮、异丙醇、醋酸乙酯的量,采用先脱轻后中和的步骤,使得到的精制乙醇中乙醛含量为0,在羰基化合成醋酸的步骤中,采用特定的采出位置进行脱碘,降低了粗醋酸中碘的含量,减少了对催化剂的影响。
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