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Pars plana vitrectomy for retinal detachment using perfluoro-n-octane as intraoperative tamponade:a multicenter,randomized,non-inferiority trial

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International Journal of Ophthalmology(English edition) 2024年第1期17卷 82-91页

作者： Xin Shi wei-jun wang Ying Fan Hai-Yun Liu Hong wang Yu-Hui Chen Ao Rong Zhi-Feng Wu Xun Xu Kun Liu Department of Ophthalmology Shanghai General HospitalShanghai Jiao Tong University School of MedicineNational Clinical Research Center for Eye DiseasesShanghai Key Laboratory of Ocular Fundus DiseasesShanghai Engineering Center for Visual Science and PhotomedicineShanghai Engineering Center for Precise Diagnosis and Treatment of Eye DiseasesShanghai 200085China Shanghai Jieshi Medical Technology Co.Ltd. Shanghai 201201China Department of Ophthalmology Tongji HospitalSchool of MedicineTongji UniversityShanghai 200065China Department of Ophthalmology Wuxi No.2 People’s Hospital(Jiangnan University Medical CenterJUMC)Wuxi 214002Jiangsu ProvinceChina

AIM:To evaluate the efficacy and safety of perfluoro-n-octane(PFO)for ophthalmic surgery versus F-Octane as an intraoperative tamponade in pars plana vitrectomy(PPV)in management of retinal ***:This multicenter,prospective,randomized,double-masked,parallel-controlled,non-inferiority trial was conducted in three ophthalmology clinical centers in *** with retinal detachment,who were eligible for PPV were consecutively *** were assigned to PFO for ophthalmic surgery or F-Octane for intraocular tamponade in a 1:1 ***-corrected visual acuity(BCVA),intraocular pressure(IOP)measurement,and dilated fundus examination were performed preoperatively and at 1,7±1,28±3d *** primary outcome was complete retinal reattachment rate at postoperative day *** non-inferiority margin was set at 9.8%.The secondary outcomes included intraoperative retinal reattachment rate,and mean changes in IOP and BCVA from baseline to 1,7±1,28±3d postoperatively,*** analyses were presented for all randomly assigned participates in this ***:Totally 124 eligible patients completed the study between Mar.14,2016 and jun.7,*** of them were randomly assigned to the PFO for ophthalmic surgery group,and 64 were assigned to the F-Octane *** characteristics were comparable between the two *** groups achieved 100%retinal reattachment at postoperative day one(difference 0,95%CI:-6.21%to 5.75%,P=1).The pre-defined noninferiority criterion was *** significant difference was observed in intraoperative retinal reattachment rate(difference 1.77%,P=0.61),mean changes in IOP(difference 0.36,-0.09,2.22 mm Hg at 1,7±1,28±3d postoperatively,with all P>0.05)and BCVA(difference 0.04,-0.02,0.06 logMAR at 1,7±1,28±3d postoperatively,all P>0.05)between the two *** apparent adverse events related to the utilization of PFO were ***:In patients with retinal detachment undergoing PPV,PFO

关键词： perfluoro-n-octane vitreoretinal surgery intraocular tamponade ophthalmic surgery retinal detachment

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Firmness measurement of peach by impact force response

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Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2009年第12期10卷 883-889页

作者： Yong-wei wang jun wang Chong YAO Qiu-jun LU Department of Biosystems Engineering Zhejiang University Hangzhou 310029 China

The impact force response of a peach impacting on a metal flat-surface was considered as nondestructive determination of firmness. The objectives were to analyze the effect of firmness, drop height, fruit mass, and impact orientation on the impact force parameters, and to establish a relationship between the impact force parameter and firmness. The effect of fruit firmness, drop height and fruit mass on the impact force parameters (coefficient of restitution, percentage of energy absorbed, and coefficient of force-time) was evaluated. The study found that the coefficient of restitution, percentage of energy absorbed, and force-time impact coefficient were significantly affected by fruit ripeness, but not affected by drop height, impact position (fruit cheek), and mass. The percentage of absorbed energy increased with ripeness, while the force-time impact coefficient and coefficient of restitution decreased with ripeness. Relationships were obtained between the three impact characteristic parameters (force-time impact coefficient, coefficient of restitution, and percentage of energy absorbed) and peach firmness using a polynomial model (R2=0.932), S model (R2=0.910), and exponential model (R2=0.941), respectively.

关键词： Firmness Peach Impact force Coefficient of restitution Percentage of absorbed energy

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Synthesis and Crystal Structure of Bis[2-[2-(diethylamino)ethyliminomethyl]-4-nitrophenolato]dimethanolcobalt(II) Dinitrate

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Chinese Journal of Structural Chemistry 2006年第9期25卷 1090-1094页

作者： wei Yi-jun wang Feng-Wu ZHU Qi-Yong Department of Chemistry. Huainan Normal College Huainan 232001 China

The title mononuclear cobalt（Ⅱ） complex [Co（DENP）2（MeOH）2].2NO3 （DENP = 2-[2-（diethylamino）ethyliminomethyl]-4-nitrophenolate） was prepared and characterized by elemental analysis, 1R and single-crystal X-ray diffraction. The crystal belongs to the triclinic system, space group P1 with a = 8.297（1）, b = 11.075（2）, c = 11.134（2） ,A,α = 69.69（1）, β = 70.97（2）, γ = 84.02（2）°, Z = 1, V = 907.0（4） ,A^3, Dc= 1.424 g/cm^3, Mr = 777.66, λ（MoKα） = 0.71073 A,μ= 0.548 mm^-1, F（000） = 409, R = 0.0628 and wR = 0.1734. The complex consists of a [Co（DENP）2- （MeOH）2]^2＋ cation and two disordered nitrate anions. The Co atom, lying at the inversion centre, is six-coordinated by two DENP ligands and two MeOH molecules in an octahedral geometry. The molecules in the crystal are linked through intermolecular O-H...O, O-H...N and N-H...O hydrogen bonds, forming chains parallel to the b axis.

关键词： Schiff base cobalt crystal structure

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Electrolytic properties and element migration in Ni-TiB_(2)/Al_(2)O_(3)composite cathode

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Rare Metals 2021年第1期40卷 57-64页

作者： Yu-Dong Liang Li-jun wang Deng-Peng Chai Sheng-Zhong Bao Ting-Ting Niu jun-wei wang Ying Liu Rare Metals and Metallurgy Materials Research Institute General Research Institute for Nonferrous MetalsBeijing 100088China Zhengzhou Nonferrous Metals Research Institute Co. LtdChaleoZhengzhou 450041China

With alumina sol as binder and Ni metal as sintering aids,the Ni-TiB_(2)/Al_(2)O_(3) composite cathode material for aluminum electrolysis was prepared by coldpressed *** mechanical properties of the composite cathode material were *** electrolytic properties were identified by a 20-A electrolysis *** samples before and after electrolysis test were measured by energy-dispersive spectroscopy(EDS).The migration behavior of various elements in the electrolysis process was studied by phase *** result shows that Ni metal can effectively fill the gap between the aggregate during the sintering process,which can improve the sintering density of the composite cathode material *** voltage of the 20-A electrolysis test is *** impurity of aluminum liquid is 0.42%.The aluminum liquid can wet the cathode surface effectively,and the Ni-TiB_(2)/Al_(2)O_(3) composite is an ideal wettable cathode *** the process of electrolysis,the alkali elements in the electrolyte penetrate the electrode,where K goes deeper than *** generated on the cathode surface will also penetrate the cathode through the gap of the composite material,while Ni in the electrode will spread into the aluminum liquid layer.

关键词： Aluminum electrolysis TiB_(2) Alumina sol Cold-pressed sintering Infiltration

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Nasobiliary drainage after endoscopic papillary balloon dilatation may prevent postoperative pancreatitis

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World Journal of Gastroenterology 2015年第8期21卷 2443-2449页

作者： Xiao-Dan Xu Jian-jun Dai Jian-Qing Qian wei-jun wang Department of Gastroenterology Changshu Affiliated Hospital of Suzhou University

AIM:To evaluate the necessity of endoscopic nasobiliary drainage(ENBD)catheter placement after clearance of common bile duct(CBD)***:Patients enrolled in this study were randomly divided into two groups,according to whether or not they received ENBD after the removal of CBD *** 1(ENBD group)was then subdividedinto three groups:G1a patients received an endoscopic papillary balloon dilatation(EPBD),G1b patients received an endoscopic sphincterotomy(EST),and G1c patients received *** 2(non-ENBD group)patients were also subdivided into three groups(G2a,G2b,and G2c),similar to Group *** maximum CBD diameter,the time for C-reactive protein(CRP)to normalize,levels of serum amylase,total serum bilirubin(TB)and alanine aminotransferase(ALT),and postoperative hospitalization duration(PHD)were ***:A total of 218 patients(139 males,79females),with an average age of 60.1±10.8 years,were enrolled in this *** hundred and thirteen patients who received ENBD were included in Group 1,and 105patients who did not receive ENBD were included in Group *** baseline clinical characteristics were similar in both *** were no significant differences in post-endoscopic retrograde cholangiopancreatography(ERCP)-related complications when Groups 1 and 2 were ***-seven patients underwent EPBD,and41 received an ENBD tube(G1a)and 36 did not(G2a).Seventy-three patients underwent EST,and 34 patients received an ENBD tube(G1b)and 39 did not(G2b).The remaining 68 patients underwent neither EPBD nor EST;of these patients,38 received an ENBD tube(G1c)and 30 did not(G2c).For each of the three pairs of subgroups(G1a vs G2a,G1b vs G2b,G1c vs G2c),there were no significant differences detected in the PHD or the time to normalization of CRP,TB and *** the EPBD group,the incidence of post-ERCP pancreatitis,hyperamylasemia and overall patient complications was significantly higher for G2a(post-ERCP pancreatitis:6/36vs 0/41,P=0.0217;hyp

关键词： Endoscopic papillary balloon dilatation Endoscopic

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Synthesis and Crystal Structure of Dehydroandrographolide Dipolycyclophosphate

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Chinese Journal of Structural Chemistry 2005年第10期24卷 1198-1202页

作者： XU Hai-wei wang jun-Feng LIU Hong-Min ZHANG Jian-Ye New Drug Research ＆ Development Center Zhengzhou University Zhengzhou 450052 China

The title compound was synthesized and characterized by IR, NMR, HRSI-MS and MS, and its crystal structure was determined by single-crystal X-ray diffraction. The crystal is of orthorhombic system （C40H52O11P2, Mr= 770.76）, space group P21212, with a = 22.562（5）, b = 29.224（6）, c = 7.1953（14） A, V = 4744.2（16） A^3, Z = 4, Dc = 1.079 g/cm^3, F（000） = 1640 and μ = 0.141 mm^-1. The final R = 0.0758 and wR = 0.1778 for 2794 observed reflections with I 〉 20（I）. Intermolecular hydrogen bonds are found between the O atom of carbonyl group and H atoms of olefinic carbon. The absolute configuration of this molecule was confirmed by comparison with that of the original material.

关键词： crystal structure andrographolide cyciophosphate synthesis

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Slag/metal Separation Process of Gas-reduced Oolitic High-phosphorus Iron Ore Fines

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Journal of Iron and Steel Research International 2014年第11期21卷 1009-1015页

作者： Hui-qing TANG Long MA jun-wei wang Zhan-cheng GUO State Key Laboratory of Advanced Metallurgy University of Science and Technology Beijing

Slag/metal separation process of the highly reduced oolitic high-phosphorus iron ore fines was investigated. Samples were prepared using the reduced ore fines （metallization rate： 88%） and powder additives of CaO and Na2CO3. Slag/metal separation behavior tests were conducted using a quenching method and the obtained metal parts were subjected to direct observation as well as microstructure examination with SEM and EDS; iron recovery and phosphorus distribution tests were conducted using a Si-Mo high temperature furnace and the obtained metal parts were examined by ICP-AES analysis and mass measurement. Thermodynamic calculation using coexistence theory of slag structure was also performed. Results show that temperature for slag/metal separation must be higher than 1823 K and a satisfying slag/metal separation of the highly reduced ore fines needs at least 4 min; phosphorus con- tent of hot metal is mainly determined by thermodynamics; temperature of 1823-1873 K and Na2CO3 mixing ratio of about 3 % are adequate for controlling phosphorus content to be less than 0.3 mass% in hot metal; temperature, time and Na2CO3 mixing ratio do not have significant effect on iron recovery, and iron recovery rate could be higher than 80% as long as a good slag/metal separation result is obtained.

关键词： oolitic high-phosphorus iron ore fine slag/metal separation iron recovery phosphorus partition

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Greedy is Good:Constrained Non-submodular Function Maximization via Weak Submodularity

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Journal of the Operations Research Society of China 2024年第3期12卷 627-648页

作者： Ma-jun Shi wei wang School of Statistics Xi’an University of Finance and EconomicsXi’an710100ShaanxiChina School of Mathematics and Statistics Xi’an Jiaotong UniversityXi’an710049ShaanxiChina

The widely used greedy algorithm has been recently shown to achieve near-optimal theoretical guarantees for the problems of constrained monotone non-submodular function maximization,with competitive performances in *** this paper,we investigate the problems of maximizing monotone non-submodular set functions under three classes of independent system constraints,including p-matroid intersection constraints,p-extendible system constraints and p-system *** prove that the greedy algorithm yields an approximation ratio ofγ/p+γfor the former two problems,andξγ/p+ξγfor the last problem,which further has been improved toγ/p+γ,whereγ,ξdenote the submodularity ratio and the diminishing returns ratio of set function *** addition,we also show that the greedy guarantees have a further refinement of for all the problems mentioned above,whereαis the generalized curvatureξ/p+αγof set ***,we show that our greedy algorithm does yield competitive practical performances using a variety of experiments on synthetic data.

关键词： Non-submodular function p-matroid intersection p-extendible system p-system Greedy algorithm

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The influence of water level changes on sand bodies at river-dominated delta fronts:The Gubei Sag,Bohai Bay Basin

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Petroleum Science 2022年第1期19卷 58-73页

作者： Yang Zhang Zheng Shi Ji Li jun-wei wang Bao-Liang Yang Ji-Guo Jiang Faculty of Petroleum China University of Petroleum(Beijing)Karamay CampusKaramayXinjiang834000China College of Resources and Environmental Engineering Guizhou Institute of TechnologyGuiyangGuizhou550003China Experiment Testing Institute PetroChina Xinjiang Oilfield CompanyKaramayXinjiang834000China Research Institute of Exploration and Development PetroChina Xinjiang Oilfield CompanyKaramayXinjiang834000China School of Geosciences China University of PetroleumQingdaoShandong266580China Zhuangxi Oil Production Plant Sinopec Shengli Oilfield CompanyDongyingShandong257000China

Changes in water level are one of the important factors controlling the constructive characteristics of *** paper studies the influence of water level changes on sand bodies in the third member of the Shahejie Formation(Es3)on the gentle southern slope of the Gubei Sag,Bohai Bay Basin and draw some conclusions that,for complex sand bodies,with the increase in water level the distributary channels bifurcate frequently,from a simple branching shape to a network shape along with the increase in the development of crevasse splays,mouth bars and sheet *** single sand bodies,with an increase in water level in the slope zone of the lake basin close to the source area,the superimposition style transitioned from vertical cutting-stacking and lateral isolation to vertical stitching,isolation and lateral ***,in the central zone of the lake basin far from the source area,the superimposition style transitioned from vertical stitching and lateral stitching to vertical isolation and lateral *** water level stays stable,the greater the distance from the source area the greater the disaggregation ratio of a single sand *** the same distance from the source area,higher water level tends to result in greater disaggregation ratio of a single sand body.

关键词： Water level changes River-dominated delta Delta front sandbodies Paleogene Shahejie Formation Gubei Sag of Bohai Bay Basin

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New index to predict esophageal variceal bleeding in cirrhotic patients

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World Journal of Gastroenterology 2014年第22期20卷 6989-6994页

作者： Xiao-Dan Xu Jian-jun Dai Jian-Qing Qian Xun Pin wei-jun wang Department of Gastroenterology Changshu Affiliated Hospital of Suzhou University

AIM: To develop a safe, simple, noninvasive and affordable system to predict esophageal variceal bleeding (EVB) in decompensated cirrhosis patients.

关键词： Portal hypertension Ultrasound-Doppler Esophageal variceal bleeding Decompensated cirrhosis Endoscopy

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