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Simultaneous removing SO_2 and NO by a new system containing cobalt complex

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Journal of environmental Sciences 2006年第3期18卷 567-571页

作者： ZHOU Chun-qiong DenG xian-he PAN Zhao-qun School of Chemical and energy engineering South China University of Technology Guangzhou 510640 China

Absorption and catalytic oxidation of nitric oxide can be achieved by using cobalt（Ⅲ） ethylenediamine （Co（en）3^3＋. When simultaneous absorbing SO2 and NO, the precipitation of Co2（SO3）3 will be yielded and the NO removal will be decreased. A new catalyst system using Co（en）3^3＋ coupled with urea has been developed to simultaneous remove NO and SO2 in the flue gas. NO is absorbed and catalytically oxidized to nitrite and nitrate by Co（en）3^3＋. The dissolved oxygen in scrubbing solution from the feed stream acts as oxidant. Urea restrains the precipitation of Co2（SO3）3 by oxidizing SO3^2-to SO4^2- as COSO4 is more soluble in water. The experimental results proved that nearly all SO3^2- can be oxidized to SO4^2- and the high NO and SO2 removal could be obtained with the new system. The NO removal is influenced by gas flow rate, the concentration of Co（en）3^3＋ and urea in the absorption solution, the temperature of the scrubbing solution and the content of oxygen in the flue gas. The low gas flow rate is favorable to increase the NO removal. The experiments proved that the NO removal could be maintained at more than 95% by the system of 0.02 mol/L Co（en）3^3＋ and 1% urea at 50℃ with 10% O2 in the flue gas.

关键词： simultaneous removing SO2 and NO, Co(en)33+ urea SO32- oxidation

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Coordinating workload balancing and power switching in renewable energy powered data center

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Frontiers of Computer Science 2016年第3期10卷 574-587页

作者： xian LI Rui WANG Zhongzhi LUAN Yi LIU Depei QIAN State Key Laboratory of Software Development environment Beihang University Beijing 100191 China School of Computer Science and engineering Beihang University Beijing 100191 China

There has been growing concern about energy consumption and environmental impact of datacenters. Some pioneers begin to power datacenters with renewable energy to offset carbon footprint. However, it is challenging to integrate intermittent renewable energy into datacenter power system. Grid-tied system is widely deployed in renewable energy powered datacenters. But the drawbacks （e.g. Harmonic dis- turbance and costliness） of grid tie inverter harass this design. Besides, the mixture of green load and brown load makes power management heavily depend on software measurement and monitoring, which often suffers inaccuracy. We propose DualPower, a novel power provisioning architecture that en- ables green datacenters to integrate renewable power supply without grid tie inverters. To optimize DualPower operation, we propose a specially designed power management frame- work to coordinate workload balancing with power supply switching. We evaluate three optimization schemes （LM, PS and JO） under different datacenter operation scenarios on our trace-driven simulation platform. The experimental results show that DualPower can be as efficient as grid-tied system and has good scalability. In contrast to previous works, Du- alPower integrates renewable power at lower cost and main- tains full availability of datacenter servers.

关键词： renewable energy green computing power pro-visioning power management

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Surgical treatment of patients with intermediate-terminal pancreatic cancer

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World Journal of Gastroenterology 2006年第5期12卷 765-767页

作者： Yu-Bin Liu Liang Huang Zhi-Yong xian Zhi-xiang Jian Jin-Rui Ou Zi-xian Liu Department of Hepatobiliary Surgery Guangdong Provincial People's Hospital Guangzhou 510080Guangdong Province China

AIM： To investigate the surgical treatment of patients with intermediate-terminal pancreatic cancer. METHODS： A retrospective analysis was made of the clinical data of 163 patients with intermediate-terminal pancreatic cancer who were surgically treated between August 1994 and August 2003. RESULTS： A total of 149 patients underwent palliative surgery. The mortality rate of those who underwent cholecystojejunostomy alone was 14.2%, the icterus or cholangitis recurrence rate was 61.9% with an average survival period of 7.1 too. The mortality rate for those who received hepatic duct-jejunostomy （HDJS） was 5.7%, the icterus or cholangitis recurrence rate was 6.8% with an average survival period of 7.1 too. But 31.8% of the patients developed duodenum obstruction within 6 mo after the surgery, six of seven patients with severe pain were given peri-abdominal aorta injection with absolute alcohol and their pain was alleviated. The other patients underwent percutaneous transhepatic cholangial drainage （PTCD） and their icterus index returned to normal level within 40 d with an average survival period of 7.5 mo. CONCLUSION： Roux-en-y HDJS combined with prophylactic gastrojejunostomy is recommended for patients with intermediate-terminal pancreatic cancer, and biliary prosthesis can partly relieve biliary obstruction in a short term.

关键词： Pancreatic cancer Bile duct conduction Gastrointestinal conduction Biliary prosthesis

Allocation Model of Total energy Consumption and Pollutant Emission Control Based on low-carbon Economy and its Significance

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Allocation Model of Total Energy Consumption and Pollutant E...

Raman spectra of the GFP-like fluorescent proteins

2012 International Conference of Health,Structure,Material and environment(HSME 2012)

作者： WANG xian'en LI Dufeng ZHAO Wenjin LI Yu College of environment and Resources Jilin University Resources and environmental Research Academy North China Electric Power University

As the rapid development of Chinese economy,the total energy consumption and pollutant emission increased increasingly,which lead to a terrible situation in energy safety and environmental *** the meantime,the greenhouse gas(GHG)and pollutants(such as SO2,NOx and NH3-N)generated by energy consumption increased,and the above pollutions had brought a substantial negative impact on global climate change and low-carbon economy(LCE)*** paper analyzed the situation of energy consumption in China,and revealed the significance of total energy *** consumption control based on LCE theory was the effective protection measure of national resources and energy security,and could promote the economic development and adjustment of industrial structure,which was investigated from three aspects expressed as three allocation models in the *** results indicated that,energy consumption control can promote development of LCE by protecting eco-environment and sustaining security of energy and resources,and supporting steady development of our society by minimizing the utilization of energy,and the above aspects would be the key points in control of total energy consumption and pollutant emission during the 12 th Five-Year Planning in China.

关键词： Total energy consumption control Pollutant Modeling management Allocation models low-carbon economy

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Biophysics Reports 2018年第5期4卷 265-272页

作者： Ye Yuan Dianbing Wang Jibin Zhang Ji Liu Jian Chen xian-en Zhang National Laboratory of Biomacromolecules CAS Center for Excellence in Biomacromolecules Institute of Biophysics Chinese Academy of Sciences College of Life Science and Technology Huazhong Agricultural University College of Life Science Hubei University

The objective of the study was to elucidate optical characteristics of the chromophore structures of fluorescent proteins. Raman spectra of commonly used GFP-like fluorescent proteins（FPs） with diverse emission wavelengths（green, yellow, cyan and red）, including the enhanced homogenous FPs EGFP,EYFP, and ECFP（from jellyfish） as well as m Neptune（from sea anemone） were measured. High-quality Raman spectra were obtained and many marker bands for the chromophore of the FPs were identified via assignment of Raman spectra bands. We report the presence of a positive linear correlation between the Raman band shift of C;=C;and the excitation energy of FPs, demonstrated by plotting absorption maxima(cm;) against the position of the Raman band C;=C;in EGFP, ECFP, EYFP, the anionic chromophore and the neutral chromophore. This study revealed new Raman features in the chromophores of the observed FPs, and may contribute to a deeper understanding of the optical properties of FPs.

关键词： Chromophore Fluorescent protein Raman spectra

The measurement of time spent outdoors in child myopia research： a systematic review

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International Journal of Ophthalmology(english edition) 2018年第6期11卷 1045-1052页

作者： Jing Wang xian-Gui He Xun Xu Department of Ophthalmology Shanghai General Hospital Shanghai Jiao Tong University Shanghai 200080 China Shanghai Key Laboratory of Ocular Fundus Diseases Shanghai General Hospital Shanghai Jiao Tong University Shanghai 200080 China Shanghai engineering Center for Visual Science and Photomedicine Shanghai 200080 China Department of Eye Disease Prevention and Treatment Shanghai Eye Disease Prevention and Treatment Center Shanghai Eye Hospital Shanghai 200040 China Department of Matemal and Child Health School of Public Health Key Laboratory of Public Health Safety Ministry of Education Fudan University Shanghai 200032 China

The purpose of this article is to summarize the methods most commonly used to measure time spent outdoors and provide a comprehensive review of time and activity recording methods with the aim of encouraging the development of new methods. PubMed, Embase and the Cochrane Library were searched from Jan. 1st, 1990 to Aug. 31th, 2017. Studies including the following specific terms： “outdoor”, “outside”, “outdoor activity”, “outside activity”, “outdoor time”, “outside time”, and “outdoor AND measurement of time spent outdoors” were considered for this review. In total, three kinds of outdoor time measurements were discussed. Questionnaires have the longest history and are the most thoroughly revised instruments for assessing time spent outdoors, but recall bias is their most substantial drawback. Global positioning system （GPS） tracking can distinguish between indoor and outdoor locations, but its utility is limited due to several factors such as subject compatibility. Light exposure measurement devices are newly emerging, but all of these devices require good subject cooperation. Further efforts and exploration are needed to develop better methods and new tools to record exposure to the outdoors in real time. Moreover, inventing a new device by combining two or more types of devices mentioned above and using the latest technology of en ergy supplementation and autoswitching may make the best use of the advantages and bypass the disadvantages of each tool.

关键词： myopia outdoor (activity) time questionnaire global positioning system light exposure

全球主要经济体企业科技创新版图分析及启示——中国企业加强基础研究是建设创新型国家的必然选择

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中国科学院院刊 2022年第9期37卷 1270-1280页

作者：李敏张先恩刘云中国科学院生物物理研究所北京100101 深圳理工大学合成生物学院深圳518055 中国科学院大学公共政策与管理学院北京100049

企业创新能力是科技强国的重要体现,而基础研究是科技创新的源泉。基础研究的执行主体无疑是高校和国家科研机构,而企业在基础研究活动中扮演什么角色?一直以来存在不同观点。文章立足宏观,首先对基础研究的内涵进行探讨,明确企业基础... 详细信息

企业创新能力是科技强国的重要体现,而基础研究是科技创新的源泉。基础研究的执行主体无疑是高校和国家科研机构,而企业在基础研究活动中扮演什么角色?一直以来存在不同观点。文章立足宏观,首先对基础研究的内涵进行探讨,明确企业基础研究的应用导向属性;然后从基础研究投入、科研论文、《专利合作条约》(PCT)专利、国家竞争力指标等多个维度分析全球主要经济体企业的表现,由此构建全球主要经济体企业创新版图。通过分析比较,文章发现:(1)发达经济体的企业重视基础研究,形成大量持续创新型的百年老店;(2)改革开放以来的40多年,中国企业创新能力整体上取得巨大进步,但基础研究是短板,这是历史发展阶段所决定的。由此,文章认为,当前中国已经进入高质量发展阶段,中国企业通过合适的方式围绕行业发展未来实质性地加强基础研究,既是企业增强自身竞争力的需求,也是建设创新型国家不可或缺的。文章最后讨论了中国企业开展基础研究的若干方式。

关键词：企业经济体创新版图基础研究

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TC4钛合金表面沉积CrSiN/SiN纳米多层膜在3.5%NaCl溶液中的腐蚀磨损性能

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中国表面工程 2018年第1期31卷 74-80页

作者：何倩孙德恩曾宪光重庆大学材料科学与工程学院重庆400020 四川理工学院材料腐蚀与防护四川省重点实验室四川自贡643000

为了研究纳米多层膜的耐腐蚀性能以及腐蚀磨损机理,采用离子源辅助磁控溅射在TC4钛合金表面制备不同调制周期的CrSiN/SiN纳米多层膜。使用扫描电子显微电镜、能谱仪表征涂层的微观结构、腐蚀形貌以及元素分布;使用划痕仪、纳米压痕仪、... 详细信息

为了研究纳米多层膜的耐腐蚀性能以及腐蚀磨损机理,采用离子源辅助磁控溅射在TC4钛合金表面制备不同调制周期的CrSiN/SiN纳米多层膜。使用扫描电子显微电镜、能谱仪表征涂层的微观结构、腐蚀形貌以及元素分布;使用划痕仪、纳米压痕仪、维氏硬度计测量涂层的膜基结合力、硬度、弹性模量及断裂韧性,采用电化学工作站以及销盘磨损仪测量涂层耐腐蚀性和腐蚀磨损性。结果表明:调制周期为90 nm与360 nm时涂层耐腐蚀性能较好,腐蚀电流密度分别为1.31×10^(-8)A·cm^(-2)和1.20×10^(-8)A·cm^(-2)。此外,调制周期为45nm时,涂层硬度及弹性模量最大,分别为(22.5±0.6)GPa和(226.4±6.3)GPa,且腐蚀磨损率最低,为9.67×10^(-7)mm^3·N^(-1)·m^(-1)。多层膜结构显著改善了TC4钛合金的耐腐蚀及腐蚀磨损性能。

关键词： TC4钛合金 CrSiN/SiN纳米多层膜调制周期腐蚀磨损

维普期刊数据库

This work was supported by the European Research Council Advanced Grant(ETAP-742985 to *** J.F.)and by the Ministry of Science and Technology(grant 110-2636-B-005-001 to K.-J.L.).

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Plant Communications 2024年第1期5卷 130-147页

作者： Yu Zhang Yuan Fu Wenfei xian Xiuli Li Yong Feng Fengjiao Bu Yan Shi Shiyu Chen Robin van Velzen Kai Battenberg Alison M.Berry Marco G.Salgado Hui Liu Tingshuang Yi Pascale Fournier Nicole Alloisio Petar Pujic Hasna Boubakri M.Eric Schranz Pierre-Marc Delaux Gane Ka-Shu Wong Valerie Hocher Sergio Svistoonoff Hassen Gherbi Ertao Wang Wouter Kohlen Luis G.Wall Martin Parniske Katharina Pawlowski Philippe Normand Jeffrey J.Doyle Shifeng Cheng Shenzhen Branch Guangdong Laboratory for Lingnan Modern AgricultureGenome Analysis Laboratory of the Ministry of AgricultureAgricultural Genomics Institute at ShenzhenChinese Academy of Agricultural SciencesShenzhen 518124China Biosystematics Group Department of Plant SciencesWageningen University6708PB Wageningenthe Netherlands Department of Plant Sciences University of CaliforniaDavisDavisCA 95616USA Department of Ecology Environment and Plant SciencesStockholm University10691 StockholmSweden Germplasm Bank of Wild Species Kunming Institute of BotanyChinese Academy of SciencesLanhei RoadKunming 650201China Universite´de Lyon Universite´Lyon 1CNRSUMR5557Ecologie MicrobienneINRAUMR 141843 bd du 11 novembre 191869622 VilleurbanneFrance Laboratoire de Recherche en Sciences Ve´ge´tales(LRSV) Universite´de ToulouseCNRSUPS24 chemin de Borde RougeAuzevilleBP4261731326 Castanet TolosanFrance Department of Biological Sciences University of AlbertaEdmontonAB T6G 2E9Canada French National Research Institute for Sustainable Development(IRD) UMR LSTM(IRD/CIRAD/INRAe/Montpellier University/Supagro)-Campus International BaillarguetTA A-82/J34398 Montpellier Cedex 5France National Key Laboratory of Plant Molecular Genetics CAS Center for Excellence in Molecular Plant SciencesInstitute of Plant Physiology and EcologySIBSChinese Academy of SciencesShanghaiChina Laboratory of Molecular Biology Department of Plant SciencesWageningen University6708PB Wageningenthe Netherlands Laboratory of Biochemistry Microbiology and Soil Biological InteractionsDepartment of Science and TechnologyNational University of QuilmesCONICETBernalArgentina Faculty of Biology GeneticsLMU MunichGroßhaderner Strasse 2-482152 MartinsriedGermany School of Integrative Plant Science Sections of Plant Biology and Plant Breeding&GeneticsCornell UniversityIthacaNY 14853USA State Key Laboratory of Systematic and Evolutionary Botany Institute of BotanyChinese Academy of SciencesBeijing 100093China Univer

Plant root-nodule symbiosis(RNS)with mutualistic nitrogen-fixing bacteria is restricted to a single clade of angiosperms,the Nitrogen-Fixing Nodulation Clade(NFNC),and is best understood in the legume *** species share many commonalities,explained either by divergence from a common ancestor over 100 million years ago or by convergence following independent origins over that same time ***,comparative analyses of diverse nodulation syndromes can provide insights into constraints on nodulation—what must be acquired or cannot be lost for a functional symbiosis—and the latitude for Plant Communications Genomic landscape of nodulation variation in the ***,much remains to be learned about nodulation,especially outside of ***,we employed a large-scale phylogenomic analysis across 88 species,complemented by 151 RNA-seq libraries,to elucidate the evolution of *** phylogenomic analyses further emphasize the uniqueness of the transcription factor NIN as a master regulator of nodulation and identify key muta-tions that affect its function across the *** transcriptomic assessment revealed nodule-specific upregulated genes across diverse nodulating plants,while also identifying nodule-specific and nitrogen-response *** 70%of symbiosis-related genes are highly conserved in the four representative species,whereas defense-related and host-range restriction genes tend to be lineage *** study also identified over 900000 conserved non-coding elements(CNEs),over 300000 of which are unique to sampled NFNC ***-specific CNEs are enriched with the active H3K9ac mark and are correlated with accessible chromatin regions,thus representing a pool of candidate regula-tory elements for genes involved in ***,our results provide novel insights into the evolution of nodulation and lay a foundation for engineering of RNS traits in agriculturally important crops.

关键词： nitrogen-fixing root-nodule symbiosis two competing hypotheses phylogenomics phylotranscrip-tomics conserved non-coding elements convergence deep homology