检索结果-南通市图书馆

Research progress on catalysts for organic sulfur hydrolysis: Review of activity and stability

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Chemical Engineering 2024年第7期71卷 203-216页

作者： Bingning Wang Xianzhe Wang song yang Chao yang Huiling Fan Ju Shangguan State Key Laboratory of Clean and Efficient Coal Utilization Taiyuan University of TechnologyTaiyuan 030024China Shanxi Engineering Center of Civil Clean Fuel Taiyuan University of TechnologyTaiyuan 030024China College of Chemical Engineering and Technology Taiyuan University of TechnologyTaiyuan 030024China College of Environmental Science and Engineering Taiyuan University of TechnologyTaiyuan 030024China

The removal of organic sulfur through catalytic hydrolysis is a significant area of research in the field of *** review provides an overview of recent advancements in catalytic hydrolysis technology of organic sulfur,including the activity,stability,and atmosphere effects of hydrolysis *** emphasis is on strategies for enhancing hydrolysis activity and anti-oxygen poisoning property of *** modification,metal doping and nitrogen doping have been found to improve the activity of *** components modification is the most commonly used method,the formation of oxygen vacancies through metal doping and creation of nitrogen basic sites through nitrogen doping also contribute to the hydrolysis of organic *** strategies for anti-oxygen poisoning are discussed in a systematic *** structural regulation of catalysts is beneficial for the desorption and diffusion of hydrogen sulfide(H_(2)S),thereby effectively inhibiting its *** doping and the addition of electronic promoters such as transition metals can protect active sites and decrease the number of active oxygen *** methods have been proven to enhance the anti-poisoning performance of ***,this article summarizes how different atmospheres affect the activity of hydrolysis *** objective of this review is to pave the way for the development of efficient,stable and widely used catalysts for organic sulfur hydrolysis.

关键词： Organic sulfur Hydrolysis Catalysts Activity Stability

Particle agglomeration and inhibition method in the fluidized pyrolysis reaction of waste resin

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Chemical Engineering 2024年第3期67卷 135-147页

作者： Congjing Ren Peng Zhang Qi song Zhengliang Huang Yao yang Yongrong yang Ningbo Innovation Center Zhejiang UniversityNingbo 315100China College of Chemical and Biological Engineering Zhejiang Provincial Key Laboratory of Advanced Chemical Engineering Manufacture TechnologyZhejiang UniversityHangzhou 310027China

This work investigated the pyrolysis reaction of waste resin in a fluidized bed *** was found that the pyrolysis-generated ash would adhere to the surface of ceramic particles,causing particle agglomeration and *** kaolin could effectively inhibit the particle agglomeration during the fluidized pyrolysis reaction through physical isolation and chemical *** the one hand,kaolin could form a coating layer on the surface of ceramic particles to prevent the adhesion of organic ash generated by the pyrolysis of *** the other hand,when a sufficient amount of kaolin(-0.2%(mass))was added,the activated kaolin could fully contact with the Na+ ions generated by the pyrolysis of resin and react to form a high-melting aluminosilicate mineral(nepheline),which could reduce the formation of low-melting-point sodium sulfate and thereby avoid the agglomeration of ceramic particles.

关键词： Pyrolysis reaction of waste resin Fluidization Particle agglomeration Kaolin

Potential application of radiant floor cooling systems for residential buildings in different climate zones

在线全文

学校读者我要写书评

暂无评论

Building Simulation 2024年第4期17卷 543-560页

作者： Mengying Cui yang song Yudong Mao Kaimin yang Jiying Liu Zhe Tian School of Thermal Engineering Shandong Jianzhu UniversityJinan250101China School of Environmental Science and Engineering Tianjin UniversityTianjin300072China Key Lab of Building Environment and Energy of Tianjin Tianjin UniversityTianjin300072China

A radiant floor cooling system(RFCS)is a high-comfort and low energy consumption system suitable for residential *** floor systems usually work with fresh air,and their operating performance is affected by climatic *** and outdoor environmental disturbances and the system’s control strategy affect the indoor thermal comfort and energy efficiency of the ***,a multi-story residential building model was established in this *** system simulation program was used to study the operation dynamics of three control strategies of the RFCS based on the calibrated ***,the performance of the control strategies in five climate zones in China were compared using multi-criteria decision-making in *** results show that control strategy has a negligible effect on condensation risk,but the thermal comfort and economic performance differ for different control *** adaptability of different control strategies varies in different climate zones based on the consideration of multiple *** performance of the direct-ground cooling source system is better in Hot summer and warm winter *** variable air volume control strategy scores higher in Serve cold and Temperate zones,and the hours exceeding thermal comfort account for less than 3%of the total simulation ***,it is suggested to choose the RFCS control strategy for residential buildings according to the climate zone characteristics,to increase the energy *** results provide a reliable reference for implementing RFCSs in residential buildings.

关键词： control strategy radiant floor cooling system residential building energy efficiency climate zones

Synthesis and Crystal Structure of a Novel Monomeric Di butyltin Dicarboxylate: nBu 2Sn O 2CCH 2CH(4 ClC 6H 4)Ge(OCH 2CH 2) 3N 2·H 2O

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Journal of Structural Chemistry 1999年第2期18卷 9-13页

作者： song xue Qing yang Zhi Qiang XIE Qing Lan (National Laboratory of Elemento Organic Chemistry, Nankai University, Tianjin, 300071)

nBu 2Sn O 2CCH 2CH(4 ClC 6H 4)Ge(OCH 2CH 2) 3N 2·H 2O( M r =1053.66) is an air stable compound which crystallizes in the monoclinic space group C2/c with a=21.182(5), b=12.174(3), c=17.108(4) , β=99.59(2)°, V=4350(3)  3, Z=4, F(000)=2104, μ =2.104 mm -1 . The refinement of structure with I≥3σ(I) for 1819 reflections converged at R =0.045. The coordination geometry around the Sn atom is best described as an askew pentagonal bipyramid, in which four carboxylate oxygen atoms ( Sn(1)-O(5), Sn(1)-O(5a)=2.099  and Sn(1)-O(4), Sn(1)-O(4a)=2.158 ) and an oxygen atom from an aqua ligand comprise the pentagonal plane, with two butyl groups occupying axial positions.

关键词： diorganotin dicarboxylate crystal structure synthesis.

Wintertime Arctic Sea-Ice Decline Related to Multi-Year La Niña Events

在线全文

学校读者我要写书评

暂无评论

Advances in Atmospheric Sciences 2024年第9期41卷 1680-1690页

作者： Wenxiu ZHONG Qian SHI Qinghua yang Jiping LIU song yang School of Atmospheric Sciences Sun Yat-sen Universityand Southern Marine Science and Engineering Guangdong Laboratory(Zhuhai)Zhuhai 519082China State Key Laboratory of Satellite Ocean Environment Dynamics Second Institute of OceanographyMinistry of Natural ResourcesHangzhou 310012China Guangdong Province Key Laboratory for Climate Change and Natural Disaster Studies Sun Yat-sen UniversityGuangzhou 510275China

Arctic sea ice has undergone a significant decline in the Barents-Kara Sea(BKS)since the late *** studies have shown that the decrease in sea ice caused by increased poleward moisture transport is modulated by tropical sea temperature changes(mainly referring to La Niña events).The occurrence of multi-year La Niña(MYLA)events has increased significantly in recent decades,and their impact on Arctic sea ice needs to be further *** this study,we investigate the relationship between sea-ice variation and different atmospheric diagnostics during MYLA and other La Niña(OTLA)*** decline in BKS sea ice during MYLA winters is significantly stronger than that during OTLA *** is because MYLA events tend to be accompanied by a warm Arctic-cold continent pattern with a barotropic high pressure blocked over the Urals ***,more frequent northward atmospheric rivers intrude into the BKS,intensifying longwave radiation downward to the underlying surface and melting the BKS sea ***,in the early winter of OTLA years,a negative North Atlantic Oscillation presents in the high latitudes of the Northern Hemisphere,which obstructs the atmospheric rivers to the south of *** infer that such a different response of BKS sea-ice decline to different La Niña events is related to stratospheric *** the rapid climate changes in the past,more frequent MYLA events may account for the substantial Arctic sea-ice loss in recent decades.

关键词： Arctic sea ice multi-year ENSO Ural blocking atmospheric river Barents-Kara Sea

Symbology of Feynman integrals from twistor geometries

在线全文

学校读者我要写书评

暂无评论

Science China(Physics,Mechanics & Astronomy) 2024年第3期67卷 44-59页

作者： song He Jiahao Liu Yichao Tang Qinglin yang School of Fundamental Physics and Mathematical Sciences Hangzhou Institute for Advanced StudyUCASHangzhou 310024China CAS Key Laboratory of Theoretical Physics Institute of Theoretical PhysicsChinese Academy of SciencesBeijing 100190China International Centre for Theoretical Physics Asia-Pacific Beijing 100049 Peng Huanwu Center for Fundamental Theory Hefei 230026China School of Physical Sciences University of Chinese Academy of SciencesBeijing 100049China

We study the symbology of planar Feynman integrals in dimensional regularization by considering geometric configurations in momentum twistor space corresponding to their leading singularities(LS). Cutting propagators in momentum twistor space amounts to intersecting lines associated with loop and external dual momenta, including the special line associated with the point at infinity, which breaks dual conformal symmetry. We show that cross-ratios of intersection points on these lines, especially those on the infinity line, naturally produce symbol letters for Feynman integrals in D = 4-2∈, which include and generalize their LS. At one loop, we obtain all symbol letters using intersection points from quadruple cuts for integrals up to pentagon kinematics with two massive corners, which agree perfectly with canonical differential equation(CDE) results. We then obtain all two-loop letters, for up to four-mass box and one-mass pentagon kinematics, by considering more intersections arising from two-loop cuts. Finally we comment on how cluster algebras appear from this construction, and importantly how we may extend the method to non-planar integrals.

关键词： Feynman integrals symbol letters twistor geometry

A Novel Scalable Fault-Tolerant Control Design for DC Microgrids With Nonuniform Faults

在线全文

学校读者我要写书评

暂无评论

IEEE/CAA Journal of Automatica Sinica 2024年第8期11卷 1886-1888页

作者： Aimin Wang Minrui Fei Dajun Du yang song Shanghai Key Laboratory of Power Station Automation Technology the School of Mechatronic Engineering and AutomationShanghai UniversityShanghai 200072China

Dear Editor,The existing control schemes for microgrids(MGs)face challenges in effectively addressing plugging in/out operations under uncertain power lines and *** tackle this issue,this letter proposes a novel scalable fault-tolerant control(FTC)strategy for DC *** developing a structured Lyapunov matrix(SLM),a decoupled FTC method is introduced to mitigate the adverse effects of uncertain lines and nonuniform ***,global stability is ensured by deriving local rules expressed as linear matrix inequalities(LMIs)that solely depend on local *** new distributed generation unit(DGU)introduces only one additional condition of this nature,allowing the stability rules to scale with topology ***,the effectiveness of the proposed scheme is illustrated through simulations conducted using the MATLAB/SimPowerSystems toolbox.

关键词： stability letter operations

Vertebral Artery Stenting for Acute Multiple Cerebral Infarctions Caused by Vertebral Artery Dissection After Massage:A Case Report

在线全文

学校读者我要写书评

暂无评论

Chinese Medical Sciences Journal 2024年第2期39卷 149-154页

作者： Ying-xue Cui Chuan-Jin song xue-Si Hou Gui-Lin Liu Xu Ji Shao-song Wang Department of Neurology Beijing Hospital of Traditional Chinese MedicineCapital Medical UniversityBeijing 100010China

Vertebral artery dissection is a rare pathology that can cause ischemic stroke in young *** massage,especially improper pulling manipulation,is a cause of vertebral artery *** present a case of 32-year old woman who developed acute multiple posterior circulation ischemic cerebral infarctions as a result of left vertebral artery V4 segment dissection after receiving neck *** underwent emergency vertebral artery stent implantation at the site of the *** were relieved the day after *** patient recovered without adverse complications or endovascular restenosis in the following year.

关键词： vertebral artery dissection acute ischemic stroke stent implantation endovascular therapy

Tocolysis Effects of Traditional Chinese Medicine and Their Effective Components

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

World Journal of Traditional Chinese Medicine 2022年第2期8卷 188-198页

作者： Tong-Hua Zhang Jian-Xin Liang Deng-Lu Long Min Ma Li-Guo Chen Da-Xiang Lu Xiao-Hua Jiang xue-song yang Guang Wang Division of Histology&and Embryology International Joint Laboratory for Embryonic Development&and Prenatal MedicineMedical CollegeJinan UniversityGuangzhou 510632China Department of Traditional Chinese and Western Medicine Chinese Medicine CollegeJinan UniversityGuangzhou 510632China Key Laboratory for Regenerative Medicine of The Ministry of Education of China School of Biomedical SciencesFaculty of MedicineThe Chinese University of Hong KongHong Kong Department of Pathophysiology Institute of Brain Science ResearchKey Laboratory of State Administration of Traditional Chinese Medicine of the People's People’s Republic of ChinaSchool of MedicineJinan UniversityGuangzhou510632China Key Laboratory for Regenerative Medicine of the Ministry of Education Jinan UniversityGuangzhou 510632China

Traditional Chinese medicine(TCM)for anti-abortion is based on the theory of gynecology of TCM,which aims to prevent and treat abdominal pain during pregnancy,fetal leakage,uneasy fetal movement,and fetal *** of the complexity of the ingredients of Chinese Materia Medica,and the imprecise intervention mechanism for tocolysis,further investigation about the effects of Chinese herbs and their components on tocolysis by utilizing advanced technologies is required to be *** the information available about TCM and its effects on pregnant women and fetuses was collected via electronic search using Web of Science,PubMed,and CNKI,and a library search was performed to locate classic herbal medicine *** active ingredients in TCM were screened with the help of Traditional chinese medicine systems pharmacology database and analysis platform(TCMSP).The keywords being used included herbal names,pharmacology,pregnancy,threatened abortion,and *** pharmacological studies have shown that TCM mainly prevents threatened abortion by a direct effect on the pregnant woman’s immune system,sex hormones such as estrogen and progesterone,the uterus and the endometrium,and the decidual tissue such as the *** may also address pregnancy complications due to advanced maternal age,infection,polycystic ovary syndrome,diabetes,and mental disorders caused by threat of a *** protects against spontaneous miscarriage,but its mechanisms are largely *** research applies scientific methods to characterize and examine the effective components of TCM and their application to lower the risk of abortion to the pregnant women and fetuses.

关键词： Effective components of traditional Chinese medicine pharmacology threatened