Totally found 10043270 items.

  • [资讯] 谷歌发布AutoML 建立AI机器学习型的自动化模式
    近日据了解,谷歌正在计划建立一个机器学习型的自动化模式,并且对于企业开发者们来说可以利用这项技术去构建和定制一整套属于自己的模型,这样一来,谷歌的云计算平台所提供的人工智能技术也就成为了主要的应用场景了。 据悉,谷歌首先将发布AutoML Vision,即用于建立机器视觉模型的工具,随后将陆续推出用于机器翻译和自然语音处理等的工具。谷歌内部专家表示,当前谷歌云平台已经把训练模型和模型最优化两个过程进行了自动化部署,这些流程一旦实现了自动化,企业用户就能够更快速的提升机器学习模型的质量问题,同时对于开发者们来说,还能够通过调用简单的API接口去实现建立机器学习模型的最终目标。 目前,全世界还只有一少部分企业拥有适应人工智能和机器学习高速发展所需的人才和资金预算。只有极少数专家能创建先进的机器学习模型。如果你的公司已经有相应的机器学习工程师,那么仍然需要在建立定制化的机器模型过程中进行复杂的过程管理和时间管理。尽管谷歌已经提供了预先训练好的机器学习模型,可以完成一些特定的任务,但想要将人工智能带给每一个人,还有很长的路要走。
  • [专利] 一种净水器专用壳体
    本发明公开了一种净水器专用壳体,包括上壳体、连接座、拉杆、插接部、套接部、第一密封圈、第二密封圈、固定螺栓、下壳体、进水通道、腔体、安装板、摆臂、磁芯、挡板、进水口、霍尔传感器和弹簧,所述上壳体的上端内设有连接座,所述连接座内设有拉杆,所述上壳体的下端设有插接部,所述下壳体的上端设有套设在插接部上的套接部,所述插接部与下壳体之间通过第一密封圈密封,所述固定螺栓从下壳体的下端插入并与拉杆螺纹连接,所述拉杆的下端与下壳体之间通过第二密封圈密封,所述下壳体的下端设有腔体,与现有技术相比,能够拆装方便,降低使用成本,减少漏水机率,并且能够对逆止阀的开关状态进行监测。
  • [期刊] S-Nitrosoglutathione is a substrate for rat alcohol dehydrogenase class III isoenzyme.
    An enzyme isolated from rat liver cytosol (native molecular mass 78. 3 kDa; polypeptide molecular mass 42.5 kDa) is capable of catalysing the NADH/NADPH-dependent degradation of S-nitrosoglutathione (GSNO). The activity utilizes 1 mol of coenzyme per mol of GSNO processed. The isolated enzyme has, as well, several characteristics that are unique to alcohol dehydrogenase (ADH) class III isoenzyme: it is capable of catalysing the NAD+-dependent oxidations of octanol (insensitive to inhibition by 4-methylpyrazole), methylcrotyl alcohol (stimulated by added pentanoate) and 12-hydroxydodecanoic acid, and also the NADH/NADPH-dependent reduction of octanal. Methanol and ethanol oxidation activity is minimal. The enzyme has formaldehyde dehydrogenase activity in that it is capable of catalysing the NAD+/NADP+-dependent oxidation of S-hydroxymethylglutathione. Treatment with the arginine-specific reagent phenylglyoxal prevents the pentanoate stimulation of methylcrotyl alcohol oxidation and markedly diminishes the enzymic activity towards octanol, 12-hydroxydodecanoic acid and S-hydroxymethylglutathione; the capacity to catalyse GSNO degradation is also checked. Additionally, limited peptide sequencing indicates 100% correspondence with known ADH class III isoenzyme sequences. Kinetic studies demonstrate that GSNO is an exceptionally active substrate for this enzyme. S-Nitroso-N-acetylpenicillamine and S-nitrosated human serum albumin are not substrates; the activity towards S-nitrosated glutathione mono- and di-ethyl esters is minimal. Product analysis suggests that glutathione sulphinamide is the major stable product of enzymic GSNO processing, with minor yields of GSSG and NH3; GSH, hydroxylamine, nitrite, nitrate and nitric oxide accumulations are minimal. Inclusion of GSH in the reaction mix decreases the yield of the supposed glutathione sulphinamide in favor of GSSG and hydroxylamine.
  • [专利] 一种Co纳米层/Co纳米线/多孔氧化铝复合薄膜及其制备方法
    本发明公开了一种Co纳米层/Co纳米线/多孔氧化铝复合薄膜及其制备方法,所述Co纳米层/Co纳米线/多孔氧化铝复合薄膜包括Co纳米层、Co纳米线和多孔氧化铝薄膜,所述Co纳米层位于所述多孔氧化铝薄膜的表面,所述Co纳米线位于所述多孔氧化铝薄膜的孔洞中,所述Co纳米层厚度、Co纳米线长度及Co纳米线的分布密度均从薄膜一端至另一端递减。本发明提供的Co纳米层/Co纳米线/多孔氧化铝复合薄膜具有高饱和度虹彩渐变结构色和渐变的磁性,并且其制备方法简单,成本较低,在防伪、绘画、装饰、化妆品、显像技术、染料敏化和太阳能电池等领域具有广阔的用途。
  • [专利] A composite of low grade lime from fluidize-bed boiler with co2 emission reducing and removal of sulfur oxides in exhausted gas and improvement of high basicity efficiency in smelting process and manufacturing method thereof
    (KR20160104208) The present invention relates to a low grade quicklime composition generated from a fluidic layer boiler, and to a method for producing the same. The low grade quicklime composition has functions in removing sulfur oxide contained in sintered gas during a refining process by using a fluidic layer boiler scattering material having a large content of quicklime, improving basicity efficiency in a sintering furnace during a refining process, improving basicity efficiency during a refining process for reducing the discharging amount of carbon dioxide generated after sintering, desulfurizing sintered exhaust gas, and reducing the discharge of carbon dioxide. According to the present invention, sulfur oxide included in exhaust gas discharged as a result of a sintering process is effectively removed, and basicity efficiency in a sintering furnace is improved. Accordingly, durability of the sintering furnace is improved, and quicklime used during the sintering process is replaced, so the discharging amount of carbon dioxide generated during the sintering process is reduced. Moreover, by using the low grade quicklime composition for removing sulfur oxide according to the present invention, an effect in desulfurizing sulfur oxide in sintered exhaust gas can be easily improved without using a separate treating device.
  • [期刊] A helicase links upstream ORFs and RNA structure
    Upstream open reading frames (uORFs) in 5 UTRs of eukaryotic mRNAs are increasingly recognized as important elements that regulate cellular protein synthesis. Since uORFs can start from non-AUG codons, an enormous number of potential uORF initiation sites exists in 5UTRs. However, only a subset of these sites is used and it has been unclear how actual start sites are selected. Studies of the DEAD-box helicase Ded1p from S. cerevisiae show that translation of uORFs with non-AUG initiation codons occurs upstream of mRNA structures that emerge with defective Ded1p. The data designate mRNA structure as important determinant for non-AUG initiation sites of uORFs. Ded1p can control this RNA structure and thereby regulate uORF translation.
  • [期刊] CURTIS PACKAGING GAIN FURTHER AWARDS
    A strong business growth strategy, spearheaded by James Williams, Managing Director, saw the company increase its turnover by 13.3% to £8.5m. By relocating its entire operations and investing in a new press, Curtis Packaging expanded its facility footprint by 70%, improved production time by 64% and optimised operational efficiencies by 20%. In acknowledgement of Curtis Packaging's 2017 successes, the company was awarded SME of the Year, UK Packaging Awards; Packaging Printer of the Year, and was highly commended for Company of the Year, PrintWeek Awards; plus, won Solutions for Packaging Development, Print Solutions Awards.
  • [期刊] Physicochemical Characterization and Antinociceptive Effect of β-cyclodextrin/Lippia pedunculosa Essential Oil in Mice
    Background: Some research studies have shown that Lippia pedunculosa essential oil(EOLP) has interesting biological activities. However, its low water solubility is the main challenge toachieve its therapeutic potential. In this context, Cyclodextrins (CDs) have been widely used in order toovercome this problem due to your capability to improve the physicochemical properties of drugs.Objective: In this perspective, the main goal of this study was to investigate how the improvement ofthe physicochemical properties of inclusion complexes (EOLP and β-CD) enhance the antinociceptiveeffect in mice.Methods: To achieve that, we prepared samples by Physical Mixture (PM), Paste Complexation (PC)and Slurry Complexation (SC) methods, followed by their physicochemical characterization. Inaddition, it was evaluated if the use of β-CD enhances the antinociceptive effect of EOLP in mice.Results: The analysis showed that rotundifolone (72.02%) was the major compound of EOLP and wefound out based on DSC results that β-CD protected it from oxidation. In addition, TG techniquesdemonstrated that the best inclusion methods were PC and SC, due to their greater weight loss (10.8and 11.6%, respectively) in the second stage (171-312°C), indicating that more complexed oil wasreleased at the higher temperature than oil free. Other characteristics, such as changes in the typicalcrystalline form, and reduced particle size were observed by SEM and laser diffraction, respectively.The SC was the most effective complexation method, once the presence of rotundifolone was detectedby FTIR. Based on that, SC method was used in all mice tests. In this regard, the number of paw lickswas reduced for both compounds (all doses), but EOLP was more effective in reducing the nociceptivebehavior.Conclusion: Therefore, CDs seem not to be a good tool to enhance the pharmacological properties ofEOs rich in peroxide compounds such as rotundifolone.
  • [期刊] Analytical investigation of peristaltic nanofluid flow and heat transfer in an asymmetric wavy wall channel (Part II: Divergent channel)
    In this study, asymmetric peristaltic nanofluid flow in a two dimensional and divergent wavy channel is modeled and the heat transfer analysis is performed for it. The modeling is performed as two-phase model and it is assumed the magnetic field effects on the nanoparticles as magnetohydrodynamic (MHD) flow. Both upper and lower channel walls are considered in constant temperature and constant nanoparticle concentration. The governing equations were solved by analytical least square method (LSM) using the Maple 15.0 mathematical software and compared to available numerical results. The effect of some parameters existed in the equations (Geometry parameter, Brownian motion parameter, Dufour (Du) and Soret (Sr) numbers and etc.), are discussed on the velocities, temperature and nanoparticles concentration functions. As an important outcome, increasing in both Dufour (Du) and Soret (Sr) numbers lead to reduction in nanoparticles concentration while Dufour number increments make larger temperature profiles in the channel. (C) 2018 Elsevier Ltd. All rights reserved.
  • [资讯] 2017影响环保产业的大事:十二项政策重磅推出
    2017年大气、水、土壤污染防治行动计划全面推进,深刻彰显出我国推进生态文明建设的决心,带动了我国环保产业的发展。同时,环保产业为生态文明和环境保护工作提供了可靠的技术、装备、工程和服务保障,为改善生态环境质量做出了重要的贡献。 2017年是我国环保产业发展取得丰硕成果的一年。随着生态文明体制改革不断推进,绿水青山就是金山银山的理念深入人心,绿色发展、循环发展、低碳发展成为社会共识,大气、水、土壤污染防治行动计划全面推进。12月8日举行的中央政治局会议指出,2017年我国“生态文明建设决心之大、力度之大、成效之大前所未有,生态环境状况明显好转”。环保产业为生态文明和环境保护工作提供了可靠的技术、装备、工程和服务保障,为改善生态环境质量做出了重要的贡献。 在2017年与环保产业有关的诸多政策中,本文梳理出了最值得关注的十二条,供读者参考。 1、“十九大”报告 “十九大”报告勾画了新时代我国生态文明建设的宏伟蓝图和实现美丽中国的战略路径,要求到2035年基本实现美丽中国目标,对生态文明建设和环境保护提出一系列新目标、新部署、新要求,进一步“推进绿色发展”“壮大节能环保产业”成为全党全国的共识和抉择。为了落实“十九大”报告提出的包括加快转型发展、生态文明建设、壮大节能环保产业在内的各项任务,国家各有关部门已经全面动员起来,积极研究、制订、修改相关政策法规。因此,可以说“十九大”报告是我国环保产业下一阶段利好政策的重要源泉。 2、“十三五”规划 自从2016年11月24日国务院印发《“十三五”生态环境保护规划》以来,与环保产业有关的“十三五”规划陆续出台,为产业发展提供了方向指引。 2016年12月31日,国家发展改革委、住房城乡建设部共同印发《“十三五”全国城镇污水处理及再生利用设施建设规划》和《“十三五”全国城镇生活垃圾无害化处理设施建设规划》。2017年2月21日,环境保护部、财政部联合印发《全国农村环境综合整治“十三五”规划》,提出到2020年新增完成13万个建制村环境综合整治的目标任务。2月22日,环境保护部印发《国家环境保护“十三五”环境与健康工作规划》。2月28日,国务院批复了环境保护部上报的《核安全与放射性污染防治“十三五”规划及2025年远景目标》。4月10日,环保部印发《国家环境保护标准“十三五”发展规划》,预计未来环保产业将进一步扩大发展空间和提升发展质量。 3、环境保护税法 2016年12月25日,第十二届全国人民代表大会常务委员会第二十五次会议审议通过了《中华人民共和国环境保护税法》。这标志着原有的排污收费制度将退出历史舞台。《环境保护税法》从2018年1月1日起实施,但其对环保产业的影响在2017年已经开始显现。从“费”到“税”,虽然秉持“税负平移”的原则,但是通过立法,极大地强化了制度刚性、环境意识和治污责任。排污企业治污的主动性大大增强,投资人投资环保产业的信心大大增强。 2017年12月25日,李克强总理签发国务院令,公布《中华人民共和国环境保护税法实施条例》。12月27日,国务院发布《关于环境保护税收入归属问题的通知》表示,为促进各地保护和改善环境、增加环境保护投入,国务院决定,环境保护税全部作为地方收入。这一规定使得地方环境保护事权与财权归属相适应,极大地提高了地方保护环境的积极性,也提升了地方在环境保护上的投入能力,有利于环保产业长期稳定发展。 4、水污染防治法 2017年6月27日,十二届全国人大常委会第二十八次会议表决通过了《关于修改水污染防治法的决定》。新修订的《中华人民共和国水污染防治法》共作出55处重大修改,更加明确了各级政府的水环境质量责任,实施总量控制制度和排污许可制度,加大农业面源污染防治以及对违法行为的惩治力度,将于2018年1月1日起正式施行。 5、深化环境监测改革 9月21日,中共中央办公厅、国务院办公厅正式印发《关于深化环境监测改革提高环境监测数据质量的意见》,提出的到2020年,全面建立环境监测数据质量保障责任体系,确保环境监测机构和人员独立、公正开展工作,确保环境监测数据全面、准确、客观、真实,并首次明确提出地方党委和政府对防范和惩治环境监测数据弄虚作假负领导责任,明确了环保、质检以及各相关部门对相关环境监测机构负监管责任。这是继《生态环境监测网络建设方案》《关于省以下环保机构监测监察执法垂直管理制度改革试点工作的指导意见》后中央再一次对环境监测改革做出重大部署。深化环境监测改革将极大地促进环境监测设备和社会化监测领域的规范发展。 6、排污许可制 根据国务院办公厅印发的《控制污染物排放许可制实施方案》和环境保护部《排污许可证管理暂行规定》,2017年4月7日,第一张全国统一编码的排污许可证在海南省生态环境保护厅发出。排污许可证是企事业单位生产运行期排污行为的唯一行政许可,企事业单位须持证排污,一企一证。我国正加速构建以排污许可为基础的新型环境管理制度体系。新制度将明晰各方责任,强化监管,落实企业的诚信责任和守法主体责任,推动企业从被动治理转向主动防范,从而推动环保产业发展和新技术研发应用。 7、土壤环境管理 2016年12月31日,环境保护部发布《污染地块土壤环境管理办法(试行)》,于2017年7月1日起实施。该办法明确了监管重点,突出了风险管控,明确了土地使用权人、土壤污染责任人、专业机构及第三方机构的责任,是土壤修复产业发展的重要依据。2017年,全国土壤污染状况详查工作全面启动。2017年9月25日,农业部发布《农用地土壤环境管理办法(试行)》规定造成农用地土壤污染的单位或者个人应当承担农用地污染调查、监测、风险评估、风险管控或者治理与修复的责任;还规定需要对农用地土壤进行治理与修复的,污染责任人应当委托有能力的技术单位根据土壤污染调查和风险评估结果,编制农用地土壤污染治理与修复方案,并报当地环境保护等相关部门备案。12月26日,十二届全国人大常委会第三十一次会议分组审议了土壤污染防治法草案二审稿,建议应结合自然生态系统的恢复、扩展和优化工作,对生态用地土壤污染防治和修复等工作,进一步作出具体明确规定。 1/2 <<<>>> 编辑:赵凡
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