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Vanadium(V) Complexes Containing Unsymmetrical N-Heterocyclic Carbene Ligands: Highly Efficient Synthesis and Catalytic Behavior towards Ethylene/Propylene Copolymerization

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Chinese Journal of Polymer Science 2024年第1期42卷 32-41,I0006页

作者： yi-cong wang Hui Zhat Pei-yi Cheng Shu Zhang Xiang-Wei Liu yi-Xian Wu State Key Laboratory of Chemical Resource Engineering Beijing University of Chemical TechnologyBejing 100029China

The highly efficient method has been developed for the synthesis of NHC·VOCl_(3) containing symmetrical or unsymmetrical Nheterocyclic carbene(NHC) ligands by the transmetallation reaction of NHC·AgCl with VOCl_(3).The total isolated yield of VOCl_(3)[1,3-(2,4,6-Me_(3)C_(6)H_(2))_(2)(NCH=)_(2)C:](V4') reached 86% by transmetallation reaction,which is much higher than that(48%) by direct coordination *** methodology has also been used to synthesize the novel vanadium complexes containing unsymmetrical NHC ligands of VOCl_(3)[PhCH_(2)NCH=CHNR)C:](V5',R=2,4,6-Me_(3)C_(6)H_(2);V6',R=2,4-Me_(2)-6-Ph-C_(6)H_(2);V7',R=2,6-^(i)Pr_(2)-C_(6)H_(3)) with high yield,which could not be obtained by direct coordination *** catalytic activity and copolymerization ability would be improved by introducing unsymmetrical NHC ligands due to their less steric bulky *** vanadium complex V5' containing unsymmetrical NHC ligand exhibits higher catalytic activity(3.7×10^(5)g_(copolymer)·mol^(-1) of V·h^(-1)) than that of V4' containing symmetrical NHC ***,the higher propylene incorporation ratio(45.6 mol%) in the copolymers of ethylene with propylene could be obtained by using V5' than that(39.9%) by using V4'.The results would provide a highly efficient strategy for the synthesis of early transition metal complexes containing versitile NHC ligands,affording the catalyst with both high catalytic activity and copolymerization ability for the synthesis of high performance polyolefin elastomers.

关键词： Vanadium complex N-heterocyclic carbene ligand Transmetallation reaction Copolymerization of ethylene with propylene

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Comparison of efficacy and safety of nab-paclitaxel and oxaliplatin+S-1 and standard S-1 and oxaliplatin chemotherapy regimens for treatment of gastric cancer

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World Journal of Gastrointestinal Surgery 2024年第10期16卷 3224-3238页

作者： yi-cong wang Long Feng Gong-Ping wang Peng-Jie Yu Can Guo Bao-Jia Cai Yan Song Ting Pan Bo-Hao Lin Yuan-Dong Li Jing-Jing Xiao Department of Gastrointestinal Oncology The Affiliated Hospital of Qinghai UniversityXining 810000Qinghai ProvinceChina Department of Interventional Medicine Xi’an No.3 HospitalThe Affiliated Hospital of Northwestern UniversityXi’an 710018Shaanxi ProvinceChina Department of RadiologyLuoyang No.6 People's Hospital Luoyang 471000Henan ProvinceChina Department of Gastrointestinal Surgery The Affiliated Hospital of Qinghai UniversityXining 810000Qinghai ProvinceChina

BACKGROUND Gastric cancer(GC)is a relatively frequent clinical phenomenon,referring to ma-lignant tumors emerging in the gastric mucosal epithelial *** has a high mor-bidity and mortality rate,posing a significant threat to the health of ***,how to diagnose and treat GC has become a heated topic in this research *** To discuss the effectiveness and safety of nab-paclitaxel in combination with oxaliplatin and S-1(P-SOX)for the treatment of GC,and to analyze the factors that may influence its *** A total of 219 eligible patients with advanced GC,who were treated at Qinghai University Affiliated Hospital Gastrointestinal Oncology between January 2018 and March 2020,were included in the *** them,149 patients received SOX regimen and 70 patients received S-1 *** patients underwent both preoperative and postoperative chemotherapy consisting of 2-4 cycles each,totaling 6-8 cycles,along with parallel D2 radical surgical *** patients were followed up for a period of three years or until reaching the event *** The short-term and long-term efficacy of the P-SOX group was significantly higher than that of the SOX group,and the safety was *** multivariate analysis revealed that progression-free survival was associated with perioperative chemotherapy efficacy,tumor diameter≤2cm,high differentiation,and early cTNM(T stands for invasion depth;N stands for node metastasis;M stands for distant invasion)*** In comparison to the SOX regimen,the P-SOX regimen demonstrates improved short-term and long-term efficacy with tolerable adverse *** is anticipated that the P-SOX regimen will emerge as a first-line chemotherapy option for *** with GC who receive effective perioperative chemotherapy(Response Evaluation Criteria in Solid Tumors 1.1,Tumor Regression Grade),have a tumor diameter≤2cm,exhibit high degree of differentiation,and are at an early cTNM stage show better prognos

关键词： Nab-paclitaxel Gastric cancer Efficacy Safety

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Hydrophobic versus hydrophilic acrylic intraocular lens on posterior capsule opacification: a Meta-analysis

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International Journal of Ophthalmology(English edition) 2022年第6期15卷 997-1004页

作者： Qiong Wu Yan Li Lian Wu cong-yi wang Cataract Intraocular Lens Center of the Fourth Hospital in Xi’an Xi’an 710004Shaanxi ProvinceChina

AIM: To conduct a Meta-analysis pooling randomized controlled trials(RCTs) to compare hydrophobic with hydrophilic acrylic intraocular lenses in terms of posterior capsule opacification(PCO) ***: Electronic databases including PubMed,Embase, and the Cochrane Library were queried from their starting till January 2020. RCTs investigating the impact of hydrophobic versus hydrophilic acrylic intraocular lenses on PCO were considered eligible in this study. The pooled effect estimates were calculated using the random-effects ***: Thirteen RCTs comprising of 939 patients(1263 eyes) were covered in this study. Patients with hydrophobic acrylic intraocular lenses had a lower PCO score than those with a hydrophilic acrylic intraocular lenses [standard mean difference:-1.80;95% confidence interval(CI):-2.62 to-0.98;P<0.001]. Moreover, the frequency of neodymium-doped yttrium aluminum garnet(Nd:YAG)capsulotomy in patients with hydrophobic acrylic intraocular lenses was significantly lower than patients with hydrophilic acrylic intraocular lenses(relative risk: 0.38;95%CI: 0.20-0.71;P=0.003).CONCLUSION: These findings suggest that hydrophobic acrylic intraocular lenses are superior to hydrophilic acrylic intraocular lenses in patients after cataract surgery due to lower PCO score and reduced Nd:YAG capsulotomy. While similar studies are conducted by other researchers, the present study conducted subgroup analyses that show superior results with hydrophobic lenses in trials conducted in western countries.

关键词： hydrophobic acrylic intraocular lens hydrophilic acrylic intraocular lens posterior cataract opacification Nd:YAG capsulotomy Meta-analysis

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Acute micro-macular hole associating with extensive intraoperative rotation of implantable collamer lens without ophthalmic viscosurgical device assistance:a case report

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国际眼科杂志:英文版 2023年第10期16卷 1721-1723页

作者： Guan-Xing Dang Yan Li Xin Zhou cong-yi wang Shaanxi Eye Hospital Xi’an People’s Hospital(Xi’an Fourth Hospital)Affiliated People’s Hospital of Northwest UniversityXi’an 710004Shaanxi ProvinceChina

Dear Editor,We are writing this letter to report a micro-macular hole(mMH)following the intraoperative rotation of implantable collamer lens(ICL,V4c,Staar Surgical,Monrovia,CA,USA)without ophthalmic viscosurgical devi... 详细信息

关键词： rotation eventually letter

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Comparative analysis of visual quality between unilateral implantation of a trifocal intraocular lens and a rotationally asymmetric refractive multifocal intraocular lens

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International Journal of Ophthalmology(English edition) 2022年第9期15卷 1460-1467页

作者： Na Hui Mei-Fang Chu Yan Li cong-yi wang Lei Yu Bo Ma Shaanxi Eye Hospital Xi'an People's Hospital(Xi'an Fourth Hospital)Affiliated Guangren HospitalSchool of MedicineXi'an Jiaotong UniversityXi'an 710004Shaanxi ProvinceChina

·AIM:To compare visual quality after unilateral cataract surgery with implantation of trifocal intraocular lens(IOL)and asymmetric refractive multifocal IOL.·METHODS:The prospective nonrandom,comparative study consisted of 60 eyes of 60 patients suffering unilateral cataract surgery with implantation of two different IOLs:AT LISA tri 839 MP(30 eyes;Carl Zeiss Meditec,Germany)and LS-313 MF30(30 eyes;Oculentis GmbH,Germany).Visual acuity,refractive outcome,contrast sensitivity,defocus curves,quality of vision,and optical phenomena were evaluated at3 mo postoperatively.·RESULTS:There were no statistical differences between groups in uncorrected distance visual acuity(P=0.13)and uncorrected near visual acuity(P=0.54).In contrast,uncorrected intermediate visual acuity was better in trifocal group compared to the refractive multifocal group(P=0.02).No significant statistical between-group difference was detected in cylinder(P=0.43).Compared to trifocal group,spherical refraction and spherical equivalent in refractive multi focal group were more myopic(P<0.01).Under photopic conditions,no significant statistical differences were found between groups in contrast sensitivity at 3 and 6 cycles per degree(cpd).The refractive multifocal group performed better at 12 and 18 cpd than the trifocal group(P=0.01,P=0.034,respectively).The questionnaires of quality of vision and optical phenomena showed no differences between groups.·CONCLUSION:Trifocal IOL is superior to refractive multifocal IOL in intermediate visual *** asymmetric refractive multifocal IOL is more myopic in automated refraction and significantly better for the photopic contrast sensitivity at high frequency.

关键词： trifocal intraocular lens rotationally asymmetric multifocal intraocular lens visual quality contrast sensitivity

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Toric implantable collamer lens for the management of pseudophakic anisometropia and astigmatism

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International Journal of Ophthalmology(English edition) 2021年第11期14卷 1802-1804页

作者： cong-yi wang Ling wang Xia Hua Gang Li Yan Li Li-An Wu Shaanxi Eye Hospital Xi'an People's Hospital(Xi'an Fourth Hospital)Affiliated Guangren HospitalSchool of MedicineXi'an Jiaotong UniversityXi'an 710004Shaanxi ProvinceChina Clinical College of Ophthalmology Tianjin Medical UniversityTianjin 300020China Tianjin Aier Eye Hospital Tianjin 300191China

Dear Editor,We present the reported case of toric implantable collamer lens(ICL)implantation for correcting pseudophakic anisometropia after unilateral traumatic cataract surgery 10 years *** cataract surgery,the norm... 详细信息

关键词： cataract surgery traumatic

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Effects of acid-rock reaction on physical properties during CO_(2)-rich industrial waste gas(CO_(2)-rich IWG)injection in shale reservoirs

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Petroleum Science 2024年第1期21卷 272-285页

作者： yi-Fan wang Jing wang Hui-Qing Liu Xiao-cong Lv Ze-Min Ji National Key Laboratory of Petroleum Resources and Engineering China University of PetroleumBeijing102249China MOE Key Laboratory of Petroleum Engineering China University of PetroleumBeijing102249China Research Institute of Exploration and Development PetroChinaBeijing100083China

"Carbon peaking and carbon neutrality"is an essential national strategy,and the geological storage and utilization of CO_(2)is a hot issue ***,due to the scarcity of pure CO_(2)gas sources in China and the high cost of CO_(2)capture,CO_(2)-rich industrial waste gas(CO_(2)-rich IWG)is gradually emerging into the public's ***_(2)has good adsorption properties on shale surfaces,but acidic gases can react with shale,so the mechanism of the CO_(2)-rich IWG-water-shale reaction and the change in reservoir properties will determine the stability of geological ***,based on the mineral composition of the Longmaxi Formation shale,this study constructs a thermodynamic equilibrium model of water-rock reactions and simulates the regularity of reactions between CO_(2)-rich IWG and shale *** results indicate that CO_(2)consumed 12%after reaction,and impurity gases in the CO_(2)-rich IWG can be dissolved entirely,thus demonstrating the feasibility of treating IWG through water-rock *** IWG inhibits the dissolution of CO_(2),the optimal composition of CO_(2)-rich IWG is 95%CO_(2)and 5%IWG when CO_(2)geological storage is the main *** contrast,when the main goal is the geological storage of total CO_(2)-rich IWG or impurity gas,the optimal CO_(2)-rich IWG composition is 50%CO_(2)and 50%*** the CO_(2)-rich IWG-water-shale reaction,temperature has less influence on the water-rock reaction,while pressure is the most important ***2 has the greatest impact on water-rock reaction in *** minerals,clay minerals such as illite and montmorillonite had a significant effect on water-rock *** overall reaction is dominated by precipitation and the volume of the rock skeleton has increased by 0.74 cm3,resulting in a decrease in shale porosity,which enhances the stability of CO_(2)geological storage to some *** the reaction between CO_(2)-rich IWG-water-shale at simulated temperatures and pressures,precipitation

关键词： CO_(2)-rich industrial waste gas Geological storage Acid-rock reaction Shale Geochemical modelling

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Numerical simulation of liquid sloshing in a spherical tank by MPS method

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Journal of Hydrodynamics 2024年第2期36卷 232-240页

作者： cong-yi Huang Ji-fei wang Wei-wen Zhao De-cheng Wan Computational Marine Hydrodynamic Lab(CMHL) School of Naval ArchitectureOcean and Civil EngineeringShanghai Jiao Tong UniversityShanghai200240China Shanghai Aerospace System Engineering Institute Shanghai201109China

This paper investigates the sloshing phenomena in a spherical liquid tank using the moving particle semi-implicit(MPS)method,a crucial study in fluid *** from previous research focused on rectangular or LNG tanks,this work explores the unique motion patterns inherent to spherical *** accuracy of our in-house MPS solver MLParticle-SJTU is validated against experimental data and finite volume method(FVM).And the MPS method reveals a closer alignment with experimental outcomes,which suggests that MPS method is particularly effective for modeling complex,non-linear fluid *** the fluid’s response to excitation at its natural frequency is simulated,showcasing vigorous sloshing and rotational *** analyses of the fluid motion are conducted by drawing streamline diagrams,velocity vector diagrams,and vorticity *** fluid’s motion response is explored using both time-domain and frequency-domain curves of the fluid centroid,as well as the sloshing force.

关键词： Moving particle semi-implicit(MPS)method spherical tank liquid sloshing model experiment

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Application of femtosecond laser in assisted cataract after ICL implantation with different vault

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International Journal of Ophthalmology(English edition) 2023年第2期16卷 320-324页

作者： Yan Li cong-yi wang Li-An Wu Bo Ma Guan-Xing Dang Shaanxi Eye Hospital Xi’an People’s Hospital(Xi’an Fourth Hospital)Affiliated Guangren HospitalSchool of MedicineXi’an Jiaotong UniversityXi’an 710004Shaanxi ProvinceChina

Dear Editor,We are writing this letter to report two unusual cases of femtosecond laser-assisted cataract surgery(FLACS)in two ICL-implanted patients with significant different *** has been confirmed by accumulating evidence to improve the safety and precision of surgery from common cases to complicated cases in treating cataracts[1-3].Implantable collamer lens(ICL)implantation possesses a good performance in its predictability,reversibility,and the rapid visual recovery.

关键词： laser vault femtosecond

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Early outcomes of vision and objective visual quality analysis after cataract surgery with trifocal intraocular lens implantation

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International Journal of Ophthalmology(English edition) 2019年第10期12卷 1575-1581页

作者： Mei-Fang Chu Na Hui cong-yi wang Lei Yu Bo Ma Yan Li Cheng Pei Ophthalmology Department Xi’an Fourth HospitalShaanxiOphthalmological HospitalXi’an710004Shaanxi ProvinceChina Ophthalmology Department First Affiliated Hospital of Xi’anJiaotong UniversityXi’an710061Shaanxi ProvinceChina

AIM: To investigate the early outcomes of vision, objective visual quality and their correlation after cataract surgery with trifocal intraocular lens ***: The visual examination and objective visual quality analysis using Optical Quality Analysis System(OQAS) at 1 mo and 3 mo, and defocus curve examination at 3 mo were performed in 20 patients(27 eyes) after phacoemulsification combined with trifocal intraocular lens implantation ***: The uncorrected distant(UD), intermediate and near visual acuity(VA) were significantly improved after surgery(P<0.001). UDVA at 1 mo after the surgery was slightly better than that after 3 mo(P=0.026). The defocus curve after 3 mo indicated that the peak of distant vision was close to 0 logMAR, and UDVA was lower than 0.3 logMAR in the range of-1.5 D to-3.0 D. The modulation transfer function(MTF) cutoff frequency, strehl ratio(SR), Optical Quality Analysis System values(OVs), includes OV100, OV20 and OV9 after the surgery were significantly better than before surgery(P<0.001), but the objective scattering index(OSI) was significantly decreased(P<0.001). UDVA at 3 mo after the surgery had correlations with MTF cutoff, OSI, OV100 and OV20(r=-0.400, 0.431,-0.437,-0.411, P=0.039, 0.025, 0.023, 0.033). The uncorrected intermediate VA after 3 mo of the surgery had correlations with OSI and OV100(r=0.478,-0.411, P=0.012, 0.033). CONCLUSION: Trifocal intraocular lens implantation can provide good distant, intermediate and near VA, and the vision shows a well correlation with objective visual quality during early surgery.

关键词： visual quality trifocal intraocular lens vision correlation

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