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Recovery of Aniline from Wastewater by Nitrobenzene Extraction Enhanced with Salting-Out Effect

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Biomedical and Environmental Sciences 2010年第3期23卷 208-212页

作者： CHANG-hai li Department of Chemical Engineering Binzhou UniversityBinzhou 256603ShangdongChina School of Chemical Engineering Changchun University of TechnologyChangchun 130012JilinChina

Objective Nitrobenzene extraction enhanced by salting-out effect was employed to recover aniline from wastewater at 25 ℃. Method Batchwise experiments were conducted to elucidate the influence of various operating variables on the extracting performance, including acidity of wastewater, initial aniline concentration, ratios of solvent to wastewater, extraction stages, concentrations and different types of inorganic salts, such as NaCl, KCI, Na2SO4, CaCl2 and K29O4. Results Nitrobenzene with a concentration of 20% and a pH value of 9.1 at the temperature of 25 ℃ together with NaCl of a concentration of 14 wt.% realized nearly 100% aniline recovery at the fifth stage of wastewater treatment. Conclusions High pH values and volume ratios of nitrobenzene/wastewater are more suitable for recovery of aniline. In addition, recovery of aniline is significantly elevated with increase of the concentration of salts, whose promoting effects are in the following order: NaCI〉Na2SO4〉K2SO4〉CaC12〉KCI on the weight basis of wastewater. Furthermore, aniline in wastewater can be almost completely recovered by five-stage sequential nitrobenzene extraction, which is promoted continuously by the salting-out effect.

关键词： Aniline Nitrobenzene Extraction Salting-out

Application Specified Soft-Error Failure Rate Analysis Using Sequential Equivalence Checking Techniques

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Tsinghua Science and Technology 2020年第1期25卷 103-116页

作者： Tun li Qinhan Yu hai Wan Sikun li School of Computer Science National University of Defense TechnologyChangsha 410073China the Laboratory of Software Engineering for Complex Systems National University of Defense TechnologyChangsha 410073China. School of Software Tsinghua UniversityBeijing 100084China

Soft errors have become a critical challenge as a result of technology scaling. Existing circuit-hardening techniques are commonly associated with prohibitive overhead of performance, area, and power. However,evaluating the influence of soft errors in Flip-Flops(FFs) on the failure of circuit is a difficult verification ***, we proposed a novel flip-flop soft-error failure rate analysis methodology using a formal method with respect to application behaviors. Approach and optimization techniques to implement the proposed methodology based on the given formula using Sequential Equivalence Checking(SEC) are introduced. The proposed method combines the advantage of formal technique-based approaches in completeness and the advantage of application behaviors in accuracy to differentiate vulnerability of components. As a result, the FFs in a circuit are sorted by their failure rates, and designers can use this information to perform optimal hardening of selected sequential components against soft errors. Experimental results of an implementation of a SpaceWire end node and the largest ISCAS’89 benchmark sequential circuits indicate the feasibility and potential scalability of our approach. A case study on an instruction decoder of a practical 32-bit microprocessor demonstrates the applicability of our method.

关键词： soft error failure rate analysis Sequential Equivalence Checking(SEC) application specified

Introduction to holographic superconductor models

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Science China(Physics,Mechanics & Astronomy) 2015年第6期58卷 1-46页

作者： cai RongGen li li li liFang YANG RunQiu State Key Laboratory of Theoretical Physics Institute of Theoretical PhysicsChinese Academy of Sciences Crete Center for Theoretical Physics Department of PhysicsUniversity of Crete State Key Laboratory of Space Weather Center for Space Science and Applied ResearchChinese Academy of Sciences

In the last years it has been shown that some properties of strongly coupled superconductors can be potentially described by classical general relativity living in one higher dimension,which is known as holographic *** paper gives a quick and introductory overview of some holographic superconductor models with s-wave,p-wave and d-wave orders in the literature from point of view of bottom-up,and summarizes some basic properties of these holographic models in various *** competition and coexistence of these superconductivity orders are also studied in these superconductor models.

关键词： holographic duality superconductivity classical theories of gravity conformal field theory

An escape strategy in orbital pursuit-evasion games with incomplete information

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Science China(Technological Sciences) 2021年第3期64卷 559-570页

作者： li ZhenYu ZHU hai LUO YaZhong College of Aerospace Science and Engineering National University of Defense TechnologyChangsha 410073China

The orbital pursuit-evasion game is typically formulated as a complete-information game,which assumes the payoff functions of the two players are common ***,realistic pursuit-evasion games typically have incomplete information,in which the lack of payoff information limits the player’s ability to play *** address this problem,this paper proposes a currently optimal escape strategy based on estimation for the *** this strategy,the currently optimal evasive controls are first derived based on the evader’s guess of the pursuer’s payoff *** an online parameter estimation method based on a modified strong tracking unscented Kalman filter is employed to modify the guess and update the strategy during the *** the estimation becomes accurate,the currently optimal strategy gets closer to the actually optimal *** results show the proposed strategy can achieve optimal evasive controls progressively and the evader’s payoff of the strategy is lower than that of the zero-sum escape ***,the proposed strategy is also effective in the case where the pursuer changes its payoff function halfway during the game.

关键词： orbital pursuit-evasion incomplete-information game online parameter estimation

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抗癌药物对人食管癌裸鼠移植瘤株的治疗作用

实验动物科学与管理 2002年第4期19卷 5-7,16页

作者：叶燕丽蔡海英张彦娜王连桂中山大学肿瘤防治中心广州510060

目的　用抗癌药物博莱霉素 (BLMA6 )和顺氯氨铂 (DDP)对人食管鳞癌 (HEC2 )和人食管腺鳞癌 (HEC6 )两种裸鼠移植瘤株进行治疗的研究。方法　用同一种药物对两种不同瘤株进行治疗 ;用不同药物治疗同一种瘤株 ,以此进行药物疗效的比较。... 详细信息

目的　用抗癌药物博莱霉素 (BLMA6 )和顺氯氨铂 (DDP)对人食管鳞癌 (HEC2 )和人食管腺鳞癌 (HEC6 )两种裸鼠移植瘤株进行治疗的研究。方法　用同一种药物对两种不同瘤株进行治疗 ;用不同药物治疗同一种瘤株 ,以此进行药物疗效的比较。结果　BLMA6 对HEC2 和对HEC6 均有显著的抑制作用。DDP对HEC6 有一定的抑制作用 ,而对HEC2 的作用不明显。BLMA6 在显著抑制肿瘤生长的剂量下 ,对内脏无明显损害。结论　对人食管鳞癌和腺鳞癌的治疗BLMA6 优于DDP。

关键词：抗癌药物食管癌裸鼠移植瘤株治疗作用博莱霉素顺氯氨铂

Tf_2NH-catalyzed,highly regio-and stereo-selective synthesis of trisubstituted alkenes and indane derivatives from benzylic alcohols and alkenes

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Chinese Chemical Letters 2015年第3期26卷 320-322页

作者： hai-Hua li Department of Environmental and Chemical Engineering Tangshan College

A reaction of benzylic alcohols with alkenes has been developed in the presence of bis（trifluoromethane）sulfonimide for the synthesis of trisubstituted alkenes and indane derivatives with high *** general,benzylic alcohols react with 1,1-diaryl alkenes to afford trisubstituted alkenes,and the reaction with 1,2-disubstituted and trisubstituted alkenes affords indane derivatives through a [3 ＋ 2] annulation reaction.

关键词： alcohols catalyzed afford selectivity stereo Friedel react catalysis inexpensive stilbene

Medium-Mn steels for hot forming application in the automotive industry

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International Journal of Minerals,Metallurgy and Materials 2021年第5期28卷 741-753页

作者： Shuo-shuo li hai-wen Luo School of Metallurgical and Ecological Engineering University of Science and Technology BeijingBeijing 100083China

Advanced high-strength steels have been widely used to improve the crashworthiness and lightweight of *** from the popular cold stamping,hot forming of boron-alloyed manganese steels,such as 22MnB5,could produce ultra-high-strength steel parts without springback and with accurate control of ***,hot-formed medium-Mn steels could have many advantages,including better mechanical properties and lower production cost,over hot-formed *** paper reviews the hot forming process in the automotive industry,hot-formed steel grades,and medium-Mn steel grades and their application in hot forming in *** particular,the adaptabilities of medium-Mn steels and the presently popular 22MnB5 into hot forming were compared *** research should focus on the technological issues encountered in hot forming of medium-Mn steels to promote their commercialization.

关键词： medium-Mn transformation-induced plasticity steel hot forming mechanical properties retained austenite baking

Rapid discovery and identification of 68 compounds in the active fraction from Xiao-Xu-Ming decoction(XXMD) by HPLC-HRMS and MTSF technique

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Chinese Chemical Letters 2014年第12期25卷 1648-1652页

作者： cai-Hong Wang cai-Sheng Wu hai-lin Qin Jin-Lan Zhang State Key Laboratory of Bioactive Substance and Function of Natural Medicines.Institute of Materia Medica Chinese Academy of Medical Sciences  Peking Union Medical College State Key Laboratory of Bioactive Substance and Function of Natural Medicines.Institute of Materia Medica Chinese Academy of Medical Sciences Peking Union Medical College

Xiao-Xu-Ming decoction（XXMD） was a traditional Chinese prescription and first recorded in ＂Bei Ji Qian Jin Yao Fang＂.It has been widely used to treat theoplegia and the sequel of theoplegia in *** the present work,high-performance liquid chromatography coupled with high resolution mass spectrometry（HPLC-HRMS） combined with the mass spectral tree similarity filter technique（MTSF）was used to rapidly discover and identify the compounds of the active fraction of XXMD.A total of 3362 compounds were automatically detected by HPLC-HRMS,and final 68 compounds were identified in the active fraction of *** 14 templated compounds（reference compounds）,50 related compounds fished by MTSF technique,and 4 unrelated compounds identified by manual *** study successfully applied MTSF technology for the first time to discover and identify the components of Chinese *** results demonstrated that MTSF technique should be useful to the discovery and identification of compounds in Chinese *** study also proved that MTSF can be applied to the targeted phytochemical separation.

关键词： Xiao-Xu-Ming decoction High-performance liquid chromatography with high resolution mass spectrometry Mass spectral trees similarity filter technique

Clinical characteristics of patients with Haff disease after eating crayfish

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World Journal of Emergency Medicine 2019年第3期10卷 156-159页

作者： cai-jun Wu hai-jiang Zhou Wei Gu Department of Emergency Medicine Dongzhimen Hospital Institute of Sepsis Beijing University of Chinese Medicine Beijing 100700 China Department of Emergency Medicine Beijing Chao-yang Hospital Capital Medical University Beijing China Emergency Medicine Center Chuiyangliu Hospital Affi liated to Tsinghua University Beijing China

BACKGROUND: The study aimed to explore the clinical presentations, laboratory findings, treatments and prognosis of patients with Haff disease after eating crayfi sh. METHODS: Sixteen patients with Haff disease after eating crayfish were admitted to the Emergency Department of Beijing Chao-yang Hospital between June 2013 and August 2017. Clinical data was retrospectively analyzed. RESULTS: Alcohol consumption and exercise were found to be most commonly associated with the onset of rhabdomyolysis after consuming crayfi sh. Most patients were young adults and the symptoms mostly occurred within 24 hours of consumption of crayfi sh. Clinical symptoms included myalgia (100%), fatigue (87.5%), nausea (43.8%), dizziness (62.5%), chest distress (37.5%) and fever (18.8%). Also found after laboratory testing was elevations in the levels of creatine kinase (11,376±5,535 U/L), myoglobin (350±158 ng/mL), lactate dehydrogenase (6,539±3,180 U/L), alanine transaminase (174±71 U/L) and aspartate aminase (348±100 U/L). The incidence of renal dysfunction was low (6.25%), and all 16 patients had a good prognosis. CONCLUSION: Patients with Haff disease exhibited typical symptoms after consuming crayfish, and laboratory findings gave highly accurate diagnostic results. The development of rhabdomyolysis was considered to be associated with alcohol consumption and exercise, but further studies are needed to demonstrate its relationship with crayfi sh consumption. Compared with other causes of rhabdomyolysis, rhabdomyolysis after crayfi sh consumption has fewer complications and better prognosis.

关键词： Haff disease Rhabdomyolysis Crayfish