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Chinese Chemical Letters 2003年第3期14卷 221-224页

作者： you ming wang Ke HE Guo Feng ZHAO Zheng ming LI State Key Lab of Elemento-Organic Chemistry Nankai UniversityTianjin 300071

Piperonyl methyl ketone was obtained by oxidizing isosafrole with hydrogen peroxide and formic acid. Dianion of ethyl acetoacetate reacted with piperonyl methyl ketone and 5, 6-dihydro-6-methyl-6-piperonyl-2H-pyran-2, 4-dione was prepared, which reacted with substituted anilines in the presence of ethyl orthoformate to obtain 3-anilinomethylene-5, 6- dihydro- 6-methyl-6-piperonyl-2H-pyran-2, 4-diones. Their structures were confirmed by 1HNMR and elemental analysis.

关键词： Piperonyl methyl ketone isosafrole dianion.

No-solvent Condensation Reaction of Amino Acids and their Derivatives with Pyrandione

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Chinese Chemical Letters 2001年第6期12卷 475-476页

作者： Qiang JIA Zheng ming LI Su Hua wang Wei Guang ZHAO you ming wang Institute of Elemento-Organic Chemistry Nankai UniversityTianjin 300071

Synthesis of a novel series of N-pyrandione substituted amino acids and their esters 3 via a condensation reaction between pyrandione and amino acid or their derivatives in excess ethyl orthoformate without solvent is... 详细信息

关键词： Pyrandione amino acid condensation reaction Z/E isomer green chemistry

New classification of the anatomic variations of cystic artery during laparoscopic cholecystectomy

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World Journal of Gastroenterology 2007年第42期13卷 5629-5634页

作者： you-ming Ding Bin wang Wei-Xing wang Ping wang Ji-Shen Yan Department of Hepatobiliary & Laparoscopic Surgery Renmin Hospital of Wuhan University Wuhan 430060 HubeiProvince China

AIM： To investigate the anatomic variations in the cystic artery by laparoscopy, and to provide a new classification system for the guidance of laparoscopic ***： Six hundred patients treated with laparoscopic cholecystectomy from June 2005 to May 2006 were studied retrospectively, The laparoscope of 30° （Stryker, American） was applied, Anatomic structures of cystic artery and conditions of Calot＇s triangle under laparoscope were recorded respectively,RESULTS： Laparoscopy has revealed there are many anatomic variations of the cystic artery that occur frequently. Based on our experience with 600 laparoscopic cholecystectomies, we present a new classification of anatomic variations of the cystic artery, which can be divided into three groups：（1） Calot＇s triangle type, found in 513 patients （85.5%）; （2） outside Calot＇s triangle, found in 78 patients （13%）; （3） compound type, observed in 9 patients （1.5%）.CONCLUSION： Our classification of the anatomic variations of the cystic artery uncontrollable cystic artery extrahepatic bile duct injury. will be useful for decreasing hemorrhage, and avoiding extrahepatic bile duct injury.

关键词： Cystic artery Laparoscopic cholecystectomy Bile duct injury Calot's triangle

Condensation Products from β-Keto-δ-valerolactones

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Chinese Chemical Letters 1999年第5期10卷 345-346页

作者： you ming wang Zheng ming LI Jia Feng LI (State Key Laboratory of Nankai University, Tianjin 300071) State Key Laboratory Nankai University Tianjin 300071 China

Unexpected condensation products from β-keto-δ-valerolactones were obtained. Theirstructures were confirmed by 'HNMR spectrum and elemental analysis.

关键词： Condensation condensation reaction β-keto-δ-valerolactone

A New Condensation Reaction of β-Keto-δ-valerolactone with Substituted Aniline

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Chinese Chemical Letters 1999年第4期10卷 269-270页

作者： you ming wang Jia Feng LI Zheng ming LI(State Key Laboratory of Elemento-Organic Chemistry. Nankai University. Tianjin 300071) State Key Lab. Elemento-Organ. Chem. Nankai University Tianjin 300071 China

A new condensation reaction of β-keto-δ-valerolactones was developed. The condensation products are composed of a pair of isomers because of the formation ofintramolecular hydrogen bond. Their structures were confir... 详细信息

关键词： Condensation reaction β-keto-δ-valerolactone intramolecular hydrogen bond

Application of 3D-printed prosthesis in revision surgery with large inflammatory pseudotumour and extensive bone defect: A case report

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World Journal of Clinical Cases 2022年第36期10卷 13388-13395页

作者： Hong-Ping wang ming-you wang Yu-Ping Lan Zhuo-Dong Tang Qi-Feng Tao Chun-Yu Chen Department of Orthopaedics Panzhihua Municipal Central HospitalPanzhihua 617000Sichuan ProvinceChina Department of Clinical Medicine Dali UniversityDali 671000Yunnan ProvinceChina

BACKGROUND Hip revision surgery is the final treatment option for the failure of artificial hip joints, but it is more difficult than the initial operation. For patients with hip joint loosening around the prosthesis combined with large inflammatory pseudotumours and large segment bone defects, hip revision is even more difficult, and clinical reports are *** SUMMARY Male, 59 years old. The patient underwent left hip replacement 35 years ago and was now admitted to hospital due to massive masses in the left thigh, shortening of the left lower extremity, and pain and lameness of the left hip joint. X-ray, computed tomography and magnetic resonance imaging revealed prosthesis loosening, left acetabular bone defect(Parprosky IIIB type), and a bone defect of the left proximal femur(Parprosky IIIA type). Inflammatory pseudotumours were seen in the left hip and left thigh. Hip revision surgery was performed using a 3Dprinted custom acetabular prosthesis was used for hip revision surgery, which was produced by Arcam Electron Beam Melting system with Electron Beam Melting technology. The operation was successful, and the patient was followed up regularly after the operation. The custom-made acetabular prosthesis was well matched, the inflammatory pseudotumour was completely removed, the postoperative hip prosthesis was stable, and the old greater trochanter fracture was well reduced and fixed. The patient was partially weight-bearing with crutches 3 mo after the operation and walked with full weight-bearing after 6 mo. The hip prosthesis was stable, and there was no recurrence of inflammatory pseudotumours at the last follow-up. The Visual Analogue Scale was 3, and the Harris hip score was *** The use of 3D-printed personalized custom prostheses for complex hip revision surgery has satisfactory surgical results and has great clinical application value.

关键词： 3D printing Inflammatory pseudotumour Electron Beam Melting technology Hip revision Bone defect Case report

The Chloromethylation Reaction of Substituted Titanocenes(η~5-C_5H_5)(η~5-C_5H_4CRR'C_6H_4X)TiCl_2

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Chinese Chemical Letters 1998年第5期9卷 421-422页

作者： Zheng Jie HE you ming wang Shou Shan CHEN(Institute of Elemento-Organic Chemistry, Nankai University, Tianin 300071) Inst. of Elemento-Organic Chemistry Nankai University Tianjin 300071 China

The chloromethylation reaction of substituted titanocenes (η~5-C_5H_5)(η~5-C_5H_4CRR'C_6H_4X)TiCl2 1 in the presence of polyformaldehyde and dry hydrogen chloride isreported.

关键词： chloromethylation titanium titanocene reactivity

Studies on Chiral Thiophosphoric Acids and Their Derivatives *** Asymmetric Cyclizations of L-prolinol with (Thio)phosphoro(-no)dichlorides

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Chinese Chemical Letters 1997年第2期8卷 97-98页

作者： Chu Chi TANG you ming wang Zheng Jie HE(Institute of Elemento-Organic Chemistry, Nankai University, Tianjin 300071) Inst. of Elemento-Organic Chemistry Nankai University Tianjin 300071 China

The cyclizations of L-(+)-prolinol 1 derived from L-proline with (thio)phosphoro(-no)dichlorides 2 give 1,2,3-azaphosphaoxabicyclo[3.3.0] 3 consisting of unequal amounts of diastereoisomers, eight pairs of which have ... 详细信息

关键词： Ru Studies on Chiral Thiophosphoric Acids and Their Derivatives 15.The Asymmetric Cyclizations of L-prolinol with Thio)phosphoro no)dichlorides

Assessment of immunization procedures for foot-and-mouth disease in large-scale pig farms in China based on actual data and dynamics

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Animal Diseases 2022年第1期2卷 45-60页

作者： Huarong Ren Zhen Jin Xin Pei mingtao Li you ming wang Juan Zhang Complex Systems Research Center Shanxi University030006 ShanxiChina Shanxi Key Laboratory of Mathematical Techniques and Big Data Analysis on Disease Control and Prevention 030006 ShanxiChina School of Mathematical Sciences Shanxi University030006 ShanxiChina College of Mathematics Taiyuan University ofTechnology030024 ShanxiChina The Laboratory of Animal Epidemiological Surveillance China Animal Health&Epidemiology Center266032 ShandongChina.

Foot-and-mouth disease(FMD)is an acute,highly infectious and pathogenic animal *** recent years,with the rapid development of the swine breeding industry in China,pig farms have shown a trend of larger-scale ***-scale pig farms employ standardized management,a high level of automation,and a strict_***,these farms have a large trading volume,and increased transmission intensity of FMD is noted inside the *** present,the main control measure against FMD is pig ***,a standard for immunization procedures is not available,and currently adopted immunization procedures have not been effectively and systematically *** a typical large-scale pig farm in China as the research subject and considering the breeding pattern,piggery structure,age structure and immunization procedures,an individual-based state probability model is established to evaluate the effectiveness of the immune *** on numerical simulation,it is concluded that the optimal immunization program involves primary immunization at 40 days of age and secondary immunization at 80 days of age for commercial *** boars and breeding sows are immunized 4 times a year,and reserve pigs are immunized at 169 and 259 days of *** to the theoretical analysis,the average control reproduction number of individuals under the optimal immunization procedure in the farm is *** the absence of immunization,the average is 1.7498,indicating that the epidemic cannot be controlled without immunization procedures.

关键词： Pig farm Foot-and-mouth disease Individual-based state probability model Immunization procedure Infection probability Individual-based control reproduction number

Non-Deterministic Liveness-Enforcing Supervisor Tolerant to Sensor-Reading Modification Attacks

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IEEE/CAA Journal of Automatica Sinica 2024年第1期11卷 240-248页

作者： Dan you Shouguang wang IEEE the School of Information and Electronic Engineering Sussex Artificial Intelligence InstituteZhejiang Gongshang UniversityHangzhou 310018China

In this paper, we study the supervisory control problem of discrete event systems assuming that cyber-attacks might occur. In particular, we focus on the problem of liveness enforcement and consider a sensor-reading modification attack(SM-attack) that may disguise the occurrence of an event as that of another event by intruding sensor communication channels. To solve the problem, we introduce non-deterministic supervisors in the paper, which associate to every observed sequence a set of possible control actions offline and choose a control action from the set randomly online to control the system. Specifically, given a bounded Petri net(PN) as the reference formalism and an SMattack, an algorithm that synthesizes a liveness-enforcing nondeterministic supervisor tolerant to the SM-attack is proposed for the first time.

关键词： Cyber-attacks cyber-physical system(CPS) liveness non-deterministic supervisors Petri net(PN)