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Risk factors for conversion to thoracotomy from video-assisted thoracoscopic surgery of lung cancer

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Laparoscopic, Endoscopic and Robotic Surgery 2020年第4期3卷 111-115页

作者： Yifan Liu Hao Yu yunzhen wang Zhengfu He Department of Thoracic Surgery Sir Run Run Shaw HospitalZhejiang University School of MedicineHangzhou 310016China

Objectives:Intraoperative conversion to thoracotomy from video-assisted thoracoscopic surgery(VATS)is associated with increased adverse events,which is a major concern.We aim to explore the related risk factors in lung cancer patients.Methods:In our study,the data from 1305 patients who underwent VATS between June 2017 and May 2020 were retrospectively collected,among which 67 patients underwent unexpected conversion to thoracotomy.All patients were divided into Non-conversion Group or Conversion Group according to whether they required a conversion to thoracotomy and the risk factors were explored by univariate and multivariate analyses.Results:The most common cause of conversion was fibrocalcified lymph nodes,found in 33 patients(49.3%).Multivariable logistic regression analysis demonstrates that the independent risk factors for the conversion were age≥65 y(OR=2.696,95%CI:1.487e4.887,p=0.001),tumor size>3 cm(OR=4.527,95%CI:2.490e8.233,p<0.001),and tumor location in the left upper lung(OR=3.809,95%CI:1.737 e5.492,p<0.001).Conclusions:Advanced age,bigger tumor size and tumor at the left upper lobe could lead to conversion.In the early VATS learning cases,surgeons should try to choose patients with lower risk of conversion to thoracotomy.

关键词： Risk factors Video-assisted thoracoscopic surgery Thoracotomy

定心汤辅助治疗冠心病室性期前收缩的作用机制及对临床症状的影响

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临床研究 2024年第1期32卷 126-129页

作者：孙海涛王银娜王云振王二放孙艳玲洛阳市中医院心内科河南洛阳471000

目的探讨定心汤辅助治疗冠心病室性期前收缩的作用机制及对临床症状的影响。方法选取2019年3月至2020年3月洛阳市中医院收治的90例冠心病室性期前收缩患者,采用电脑随机分组法将其分为两组各45例,分别采用常规治疗及常规治疗+定心汤辅... 详细信息

目的探讨定心汤辅助治疗冠心病室性期前收缩的作用机制及对临床症状的影响。方法选取2019年3月至2020年3月洛阳市中医院收治的90例冠心病室性期前收缩患者,采用电脑随机分组法将其分为两组各45例,分别采用常规治疗及常规治疗+定心汤辅助治疗,记录两组中医症状评分、临床疗效、炎症因子水平、心功能指标及血气指标。结果治疗前观察组的中医证候积分(28.37±1.64)分与对照组的(28.85±1.76)分比较,差异无统计学意义(P>0.05);治疗后观察组的中医证候积分[(8.92±3.57)分]低于对照组[(11.05±2.48)分],差异有统计学意义(P0.05);治疗后,两组TNF-α、CRP、PCT等炎性指标均低于治疗前,且观察组低于对照组,差异有统计学意义(P<0.05)。治疗后,观察组治疗后心功能指标表现优于对照组,差异有统计学意义(P<0.05)。治疗后,观察组SaO_(2)、pH、PaO_(2)及PaCO_(2)改善情况均优于对照组,差异有统计学意义(P<0.05)。结论定心汤辅助治疗冠心病室性期前收缩能够有效改善患者的临床症状、血气指标,减轻炎症反应,心功能显著提高,临床疗效显著。

关键词：定心汤冠心病室性期前收缩心功能炎症反应

Simultaneously enhancing the strength and ductility of as-extruded AlN/AZ91 composites via nano-precipitation and pyramidal slip

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Journal of Materials Science & Technology 2024年第5期172卷 240-254页

作者： Bin Zhang Yunxia Sun Tuo Liang yunzhen Li Tian Li Jingchao wang Ruiru Cai Changlin Yang State Key Laboratory of Solidification Processing Northwestern Polytechnical UniversityXi’an 710072China

Age hardening is often used to optimize the mechanical properties of as-deformed Mg-based materials in industry,whereas the improvement of strength is usually accompanied by the significant loss of ductility,which hinders the application of Mg-based materials in structural components.In the present work,high strength-ductility synergy(the yield strength of 263±9 MPa,ultimate tensile strength of 398±7 MPa and elongation to fracture of 34%±1%)was realized in as-extruded AlN/AZ91 composites after optimiz-ing aging processes.Microstructural characterization shows that AlN particles induced a large number of geometrically necessary dislocations around the AlN/Mg interface during extrusion,which decreased the nucleation barrier and provided more heterogeneous nucleation sites forγ-Mg 17 Al 12 continuous precipi-tation.Meanwhile,95%of residual dislocations in as-extruded AlN/AZ91 composites were annihilated dur-ing peak-aging,suppressing the growth and coarsening of continuous precipitates.Therefore,high density of nano-sizedγ-Mg 17 Al 12 continuous precipitates was produced in as-extruded AlN/AZ91 composites af-ter peak-aging.During tension,gliding dislocations bypassed sphericalγ-Mg 17 Al 12 nano-precipitates by Orowan looping rather than cutting mechanism,which induced a strong block on dislocation motion.So high yield strength was mainly attributed to the high density of non-shearableγ-Mg 17 Al 12 nano-precipitates with spherical morphology,which was different from other Mg-Al-based systems.The results of texture evolution and slip trace analysis demonstrated that the suppression of extension twinning and less basal slip was due to the enhanced activity of pyramidalc+aslip in as-extruded AlN/AZ91 com-posites after peak-aging during the room temperature tension,meanwhile,the dislocation density of as-extruded AlN/AZ91 composites was significantly decreased during peak-aging,then higher elongation to fracture was achieved.

关键词： Magnesium matrix composites Mechanical properties Precipitation Deformation mechanisms Non-basal slip

Assessment of tree-ring mercury radial translocation and age effect in Masson pine:Implications for historical atmospheric mercury reconstruction

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Journal of Environmental Sciences 2024年第4期138卷 266-276页

作者： Xu Liu Xun wang Dingyong wang College of Resources and Environment Southwest UniversityChongqing 400715China State Key Laboratory of Environmental Geochemistry Institute of GeochemistryChinese Academy of SciencesGuiyang 550081China

The tree ring has been regarded as an emerging archive to reconstruct historical atmospheric mercury(Hg)trends,but with the large knowledge gaps in the reliability.In this study,we comprehensively evaluated the Hg source,radial translocation and age effect of Masson pine(Pinus massoniana)tree ring at Mt.Jinyun in Chongqing,to assess the suitability of such tree ring as the archive of atmospheric Hg.Results showed that distinct variabilities among Masson pine tree-ring Hg concentration profiles.The Hg concentration significantly increased along with stem height(P<0.05),indicating the Hg in tree rings mainly derived from foliage uptake atmospheric Hg.We found a distinct age effect that the tree ring of young trees had the higher Hg concentration.Besides,we used the advection-diffusion model to demonstrate how Hg concentration shifted by the advection or/and diffusion in tree rings.The modeling results showed that the advection induced radial translocation during the young growth period of tree was a plausible mechanism to result in the tree-ring Hg record largely different from the trend of anthropogenic Hg emissions in Chongqing.We finally suggest that in further Hg dendrochemistry,better discarding the tree-ring Hg profile of the young growth period to reduce impacts of the radial translocation and age effect.

关键词： Masson pine Tree-ring mercury Radial translocation Tree age effect

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武陵山希蚱属一新种(直翅目:蚱科)

昆虫学报 1999年第2期42卷 199-201页

作者：王云珍中国科学院昆明动物研究所

报道了中国武陵山地区蚱科，希蚱属ＸｉｓｔｒｅｌａＢｏｌｉｖａｒ一新种：湖南希蚱ＸｉｓｔｒｅｌａｈｕｎａｎｅｎｓｉｓＷａｎｇ新种，并附中国希蚱属分种检索表。模式标本保存在中国科学院昆明动物研究所。

关键词：直翅目蚱科希蚱属新种武陵山

Pushing the boundaries: an interview with Dae-Hyun Kim on terahertz devices

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National Science Review 2024年第3期11卷 42-45页

作者： Defu wang the Center for Carbon-based Electronics School of Electronics Peking University

Ⅲ–Ⅴ compound semiconductors, such as InGaAs/InAlAs, exhibit exceptional carrier transport properties, establishing them as fundamental elements in terahertz(THz) applications crucial for the development of 6G netwo...

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ELECTRICAL PROPERTIES OF LPCVD POLY-SILICON DOPED WITH OXYGEN ATOMS

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Journal of Electronics(China) 1993年第2期10卷 181-187页

作者：潘尧令王云珍 East China Normal University Shanghai 200072

The electrical conductivity of LPCVD polysilicon doped with oxygen atoms(acromymSIPOS)films has been measured to study the electrical properties of SIPOS.The results showthat the electrical properties of SIPOS depend on both oxygen contents and annealing processes.The electrical conductivity decreases while the oxygen content in SIPOS increases.The temper-.ature dependence of the electrical conductivity of SIPOS during annealing shows that there aretwo kinds of conduction mechanisms,that is,conductivities of SIPOS are concerned in the reac-tion of Si-O bonds and the recrystallization of SIPOS during low temperature500℃)and hightemperature900℃)annealing,respectively.In addition,the doping effect on the conductivityof SIPOS has been studied.It has been observed that doping made the increase of conductivityin SIPOS,but the oxygen contents apparently suppressed the increase of conductivity in doped-SIPOS.

关键词： LPCVD-SIPOS Electrical conductivity Oxygen content Doping

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植物性食物中风味物质的生物成味研究进展

食品科学技术学报 2024年第1期42卷 1-9页

作者：王彦波张云真李文璐曾黉北京工商大学食品与健康学院/老年营养与健康教育部重点实验室北京100048

植物性食物是居民健康膳食结构中的重要组成部分,也是三大营养素、膳食纤维、多种维生素以及矿物质的重要来源。随着生活水平的提高,人们对食物的追求由“吃饱”升级到“吃好”,包括植物性食物在内的食品风味成为影响消费者喜好的重要因... 详细信息

植物性食物是居民健康膳食结构中的重要组成部分,也是三大营养素、膳食纤维、多种维生素以及矿物质的重要来源。随着生活水平的提高,人们对食物的追求由“吃饱”升级到“吃好”,包括植物性食物在内的食品风味成为影响消费者喜好的重要因素,在酶和微生物等生物媒介作用下产生的食品风味,符合消费者对天然、安全、无添加剂或少添加剂食物的期待,因此,越来越受到消费者的青睐。系统深入地了解植物性食物在生长成熟与加工处理过程中的生物成味机制,对于植物性食物风味的改良与价值的提升具有积极意义。基于植物性食物风味物质的结构特点,系统介绍了植物性食品中脂肪族化合物、芳香族化合物、杂环化合物以及萜烯类化合物等关键风味物质的组成种类与呈味特性。此外,从内源性与外源性两个角度,在分子层面着重阐述了植物性食物的生物成味机制与研究进展。内源性生物成味以植物中的内源酶为媒介,主要通过碳水化合物途径、蛋白质途径、脂肪酸途径以及萜烯类途径产生植物性食物天然的特征风味物质;外源性生物成味是在外加酶或微生物的作用下,通过生物催化与发酵等加工技术,实现目标风味物质的定向合成或抑制不良风味物质的产生。未来,随着多组学技术的联用与多学科的交叉,从植物性食物中风味物质的生物合成途径、调控机制与互作机制中将得到更深入的认识,这将为食品工业的产品改良和创新提供科学依据。

关键词：植物性食物风味物质生物成味酶微生物

脊髓神经鞘瘤切除术患者术后慢性疼痛的危险因素

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临床麻醉学杂志 2022年第8期38卷 825-828页

作者：孙婉琛王娟范菁一周扬王云珍韩如泉首都医科大学附属北京天坛医院麻醉科 100070

目的探讨脊髓神经鞘瘤切除术患者术后慢性疼痛(CPSP)的危险因素。方法选择2020年3月至2021年3月择期行脊髓神经鞘瘤切除术的患者161例,男75例,女86例,年龄≥18岁,ASAⅠ—Ⅲ级。采用数字评分量表(NRS)以及神经病理性疼痛量表(NPQ)评估... 详细信息

目的探讨脊髓神经鞘瘤切除术患者术后慢性疼痛(CPSP)的危险因素。方法选择2020年3月至2021年3月择期行脊髓神经鞘瘤切除术的患者161例,男75例,女86例,年龄≥18岁,ASAⅠ—Ⅲ级。采用数字评分量表(NRS)以及神经病理性疼痛量表(NPQ)评估患者术后3个月发生慢性疼痛及神经病理性疼痛的情况。根据NRS评分将患者分为两组:CPSP组(NRS≥1分)和无CPSP组(NRS=0分)。通过医院电子病历系统以及术后3个月电话随访收集临床资料,采用多因素Logistic回归分析脊髓神经鞘瘤切除术患者发生CPSP的独立危险因素。结果发生CPSP的患者有63例(39%),其中中重度疼痛(NRS≥4分)40例(25%)。多因素Logistic回归分析结果显示,术前合并疼痛(OR=3.670,95%CI 1.034~13.025,P=0.044)以及术后应用阿片类药物(OR=2.357,95%CI 1.103~5.036,P=0.027)是发生CPSP的独立危险因素。结论术前合并疼痛以及术后使用阿片类药物是脊髓神经鞘瘤切除术患者发生CPSP的危险因素。

关键词：术后慢性疼痛脊髓神经鞘瘤切除术危险因素