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Energy Geoscience 2024年第2期5卷 53-61页

作者： qing bian Jibiao Zhang Cheng Huang SINOPEC Petroleum Exploration and Production Research Institute BeijingChina SINOPEC Northwest Oilfield Company UrumuqiChina

Due to the considerable depth of the salt layers and the lack of calibration by exploratory drilling,the interpretation of the Middle and Lower Cambrian salt formations in the central Tarim Basin poses a *** this paper,we apply the coupling and decoupling deformation theory in salt tectonics to analyze the No.7 fault mapped in the seismic datasets by the response characteristics of the Middle and Lower Cambrian *** quantifying the stratigraphic framework of the Middle and Lower Cambrian strata,we define the position of the salt layer with the seismic *** decoupling is observed in the Middle and Lower Cambrian sequences in the Shuntuoguole Low Uplift,while deformation coupling is observed in these two sequences in the Shaya Uplift.

关键词： Tarim Basin Salt tectonics Strike-slip fault Structural analysis Seismic interpretation of decoupling zone

Microstructures of Fe_(77-x)Ni_(x)Cu_(1)Nb_(2)P_(14)B_(6) Soft Magnetic AlloysStudied by X-Ray Absorption Fine Structure

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Chinese Physics Letters 2000年第9期17卷 683-685页

作者： YIN Shi-Long bian qing WEI Shi-qiang Department of Mathematics and Physics Hohai UniversityNanjing 210024 Department of Basic Science Institute of Communication EngineeringNanjing 210016 National Synchrotron Radiation Laboratory and Center for Fundamental Physics University of Science and Technology of ChinaHefei 230029

Local structures of the mechanically alloyed Fe_(77-x)Ni_(x)Cu_(1)Nb_(2)P_(14)B_(6)soft magnetic materials have been in vestigated by x-ray absorption fine *** results show that mechanical alloying(MA)can drive theFe_(77-x)Ni_(x)Cu_(1)Nb_(2)P_(14)B_(6)powder mixture to produce amorphous alloy when the atomic concentration of Fe ele ment is about and over 40%.On the contrary,the MA Fe_(77-x)Ni_(x)Cu_(1)Nb_(2)P_(14)B_(6)is a solid solution with an fcc-like structure in the region of lower Fe atomic concentration(<22%),preserving a medium-range order around Ni and Fe ***,we have found that the local structure geometry of Fe atom is similar to that of Ni atom for all the MA Fer7-xNixCu1 Nb2P14B6 *** indicates that the local structures of Fe and Ni atoms in a Fe_(77-x)Ni_(x)Cu_(1)Nb_(2)P_(14)B_(6)sample only depend on the x value of element Ni after ball milling.

关键词： structure alloying alloy

A case of massive hemoptysis after radiofrequency catheter ablation for atrial fibrillation

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World Journal of Emergency Medicine 2022年第1期13卷 78-80页

作者： Zhen Ren Shu Li qing-bian Ma Department of Emergency Medicine Peking University Third HospitalBeijing 100191China

Dear editor,Massive hemoptysis(MH)sometimes causes a fatal condition;[1]thus,prompt diagnosis and treatment for MH are ***,a wide range of diseases(e.g.,infectious diseases,malignancies,and systemic autoimmune diseases)is associated with the development of MH,[2]which occasionally causes difficulty with identifying the specific etiology.

关键词： diagnosis diseases al.

Synthesis of Novel Bisoxazoline Ligands for the Enantioselective Diels-Alder Reaction

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Chinese Chemical Letters 2006年第8期17卷 1033-1036页

作者： qing Hua bian Jun LIU Ming Ming YIN Min WANG College of Science China Agricultural University Beijing 100094

Four novel bisoxazoline ligands 8a-d were synthesized from （S）-amino alcohols and could be formed effective catalysts （up to 77% ee for endo isomer） with Cu（OTf）2 for enantioselective Diels-Alder addition. The f... 详细信息

关键词： Asymmetry catalytic bisoxazoline Diels-Alder reaction ligand.

Synthesis of novel chiral stationary phases for high-performance liquid chromatography

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Chinese Chemical Letters 2007年第4期18卷 461-464页

作者： Xu Lin Tan Shi Cong Hou qing Hua bian Min Wang College of Science China Agricultural University Beijing 100094 China

Three novel chiral selectors 4a-c were synthesized from （S）-amino acids and （R）-1-phenyl-2-（4-methylphenyl）ethylamine. 4a-c were connected to 3-aminopropylsilanized silica gel to be used as the chiral stationary phase for HPLC. Five amino acid derivatives and two pyrethroid insecticides were fairly resolved on these three new chiral stationary phases under normal phase condition.

关键词： Enantioseparation Chiral stationary phase Amino acid derivatives Pyrethroid insecticides

Hydrodynamic Characteristics in an External Loop Airlift Slurry Reactor

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China Petroleum Processing & Petrochemical Technology 2016年第3期18卷 83-90页

作者： bian qing Tang Xiaojin Hu Lifeng Wang Shaobing Zhang Zhanzhu SINOPEC Research Institute of Petroleum Processing Beijing 100083 SINOPEC Qilu Branch Company Zibo 255400

Three different types of gas distributors were used in an external loop airlift slurry reactor to investigate the hydrodynamic characteristics. To predict the important hydrodynamic parameters, such as the total gas holdup, the slurry circulating velocity, the bubble size distribution, and the slip velocity between the gas phase and the slurry phase, the correlations are developed. The calculated results fit the experimental data very well. According to the influence of the solid holdup on the bubble size, the fluid flow in the reactor can be divided into two regimes, while a 10% value is regarded as the critical solid holdup value. When εs is≤10%, the bubble size is determined by both the gas phase and the slurry phase. When εs is ≥10%, the bubble size is determined mainly by the slurry phase. By analyzing the relationship between the slip velocity and the gas holdup, the bubble coalescence plays a key role in the slurry reactor.

关键词： hydrodynamics slurry bed bubble size distribution slip velocity

Synthesis and Unexpected Ring-opening Reaction of a New TADDOL Analogue with Chiral Cyclopropane Ring as Backbone

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Chinese Chemical Letters 2006年第5期17卷 606-608页

作者： Jun LIU qing Hua bian Ming An WANG Hong Chao GUO Min WANG Department of Applied Chemistry China Agricultural University Beijing 100094

Synthesis and ring-opening reaction of TADDOL analogue with cyclopropane as chiral backbone were described. A plausible ring-opening and carbonium ion rearrangement mechanism have been proposed.

关键词： TADDOL analogue ring-opening cyclopropane ring synthesis. tetraaryl-1 3-dioxolane-4 5-dimethanol

Influence of Iron Ore Characteristics on FeO Formation During Sintering

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Journal of Iron and Steel Research International 2011年第5期18卷 5-10页

作者： WU Sheng-li WANG qing-feng bian Miao-lian ZHU Juan LONG Fang-yi School of Metallurgical and Ecological Engineering University of Science and Technology BeijingBeijing 100083China

The influence of iron ore characteristics on FeO formation during sintering was examined mainly in terms of chemical composition and the melting characteristics of iron ores. Statistical regression and X-ray diffraction were used to further explain the specific effect of iron ore characteristics on FeO formation. The results indicate that LOI （loss on ignition） in iron ores have a positive influence on FeO formation by promoting the sintering process of Fe2O3 decomposing and reducing. Silica contents in iron ores play a determining role in final content of FeO in sinter. The melting characteristics of iron ores significantly affect FeO formation during sintering.

关键词： iron ore characteristic chemical composition melting characteristic FeO formation

Angiotensin converting enzymes inhibitors or angiotensin receptor blockers should be continued in COVID-19 patients with hypertension

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World Journal of Clinical Cases 2021年第1期9卷 47-60页

作者： Ci Tian Nan Li Yi Bai Han Xiao Shu Li qing-Gang Ge Ning Shen qing-bian Ma Department of Emergency Medicine Peking University Third HospitalBeijing 100191China Research Center of Clinical Epidemiology Peking University Third HospitalBeijing 100191China Department of Cardiology and Institute of Vascular Medicine Peking University Third HospitalBeijing 100191China Department of Critical Care Medicine Peking University Third HospitalBeijing 100191China Department of Pulmonary and Critical Care Medicine Department of MedicinePeking University Third HospitalBeijing 100191China

BACKGROUND Recent studies have revealed that sustained ingestion of angiotensin converting enzymes inhibitors or angiotensin receptor blockers(ACEIs/ARBs)had no harmful effects on coronavirus disease 2019(COVID-19)patients complicated with *** To investigate the impact on COVID-19 patients complicated with hypertension who discontinued using ACEIs/*** All COVID-19 patients complicated with hypertension admitted to our isolated unit were consecutively recruited in this *** patients switched from ACEIs/ARBs to calcium channel blocker(CCBs)after admission,while others continued using non-ACEIs/*** compared characteristics and clinical outcomes between these two groups of *** A total of 53 patients were enrolled,27 patients switched from ACEIs/ARBs to CCBs while 26 patients continued with non-ACEIs/*** controlling potential confounding factors using the Cox proportional hazards model,hospital stay was longer in patients who discontinued ACEIs/ARBs,with a hazard ratio of 0.424(95%confidence interval:0.187-0.962;P=0.040),upon discharge than patients using other anti-hypertensive drugs.A sub-group analysis showed that the effect of discontinuing use of ACEIs/ARBs was stronger in moderate cases[hazard ratio=0.224(95%confidence interval:0.005-0.998;P=0.0497)].CONCLUSION Patients in the discontinued ACEIs/ARBs group had longer hospital *** findings suggest that COVID-19 patients complicated with hypertension should continue to use ACEIs/ARBs.

关键词： COVID-19 Hypertension Angiotensin converting enzymes inhibitors Angiotensin receptor blockers Angiotensin-converting enzyme-2 Prognosis

Synthesis of Optically Active trans-2-Aminocyclopropane-carboxylic Esters

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Chinese Chemical Letters 2006年第5期17卷 584-586页

作者： Jiang Chun ZHON Shang Zhong LIU qing Hua bian Ming Ming YIN Min WANG Department of Applied Chemistry China Agricultural University Beijing 100094

Two new optically active trans-2-atrfinocyclopropanecarboxylic esters （β-ACCs） of optical purity 91%-96% were concisely synthesized via ozonization, oxidation, Curtius rearrangement from commercial available optica... 详细信息

关键词： Cyclopropane chrysanthemate β-amino acid.