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Prognostic relevance of ventricular arrhythmias in surgical patients with gastrointestinal tumors

World Journal of Gastrointestinal Oncology 2024年第5期16卷 1787-1795页

作者： Jiao-Jie Xue su-Tian hu Chong-Chong Wang Zhi-Chong Chen Shi-Yao Cheng Shu-Qi Yu hua-Jing Peng Yi-Tao Zhang Wei-Jie Zeng Department of Cardiovascular Internal Medicine Sun Yat-sen University Sixth Affiliated HospitalGuangzhou 510655Guangdong ProvinceChina Department of Cardiovascular Internal Medicine The Fifth Affiliated Hospital of Guangzhou Medical UniversityGuangzhou 510700Guangdong ProvinceChina Department of Ultrasound Fuwai HospitalChinese Academy of Medical Sciences ShenzhenShenzhen 518052Guangdong ProvinceChina Department of Kidney Internal Medicine Sun Yat-sen University First Affiliated HospitalGuangzhou 510062Guangdong ProvinceChina

BACKGROUND Individuals diagnosed with gastrointestinal tumors are at an increased risk of developing cardiovascular *** which,ventricular arrhythmia is a prevalent clinical *** suggests that ventricular arrhythmias may have predictive value in the prognosis of patients with gastrointestinal *** To explore the prognostic value of ventricular arrhythmias in patients with gastrointestinal tumors receiving *** We retrospectively analyzed data from 130 patients undergoing gastrointestinal tumor *** patients were evaluated by a 24-h ambulatory electrocardiogram(ECG)at the Sixth Affiliated hospital of sun Yat-sen University from January 2018 to June ***,41 general healthy age-matched and sexmatched controls were *** were categorized into survival and non-survival *** primary endpoint was all-cause mortality,and secondary endpoints included major adverse cardiovascular events(MACEs).REsuLTS Colorectal tumors comprised 90%of *** ambulatory ECG monitoring revealed that among the 130 patients with gastrointestinal tumors,100(76.92%)exhibited varying degrees of premature ventricular contractions(PVCs).Ten patients(7.69%)manifested non-sustained ventricular tachycardia(NSVT).The patients with gastrointestinal tumors exhibited higher PVCs compared to the healthy controls on both conventional ECG[27(21.3)vs 1(2.5),P=0.012]and 24-h ambulatory ECG[14(1.0,405)vs 1(0,6.5),Psurvivors had a higher PVC count than survivors[150.50(7.25,1690.50)vs 9(0,229.25),P=0.020].During the follow-up period,24 patients died and 11 patients experienced *** analysis linked PVC>35/24 h to all-cause mortality,and NSVT was associated with ***,neither PVC burden nor NSVT independently predicted outcomes according to multivariate *** Patients with gastrointestinal tumors exhibited elevated ***>35/24 h and NSVT detected by 24-h ambulatory ECG were prognos

关键词： Ventricular arrhythmia Gastrointestinal tumor Major adverse cardiovascular events Prognostic surgery

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Evaluation of in situ spoilage ability of common facultative anaerobic bacteria and confirmation of volatile spoilage markers in vacuum-packaged lamb

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Food Science and human Wellness 2024年

作者： Xiangyuan Wen Dequan Zhang su Wang Zhiyuan Xiao Xin Li Debao Wang Wei Yang Chengjun Min Chengli hou Institute of Food Science and Technology Chinese Academy of Agricultural Sciences Key Laboratory of Agro-Products Quality and Safety Control in Storage and Transport Process Ministry of Agriculture and Rural Affairs Institute of Agricultural Product Processing and Nutritional health Chinese Academy of Agricultural Sciences (Cangzhou) sunrise Material Co. Ltd Jiangyin Beijing Ershang Meat Food Group Co. Ltd

Microbial growth causes lamb spoilage. This study explored the spoilage ability of Latilactobacillus sakei (L. sakei)， Serratia proteamaculans (S. proteamaculans) and hafnia proteus (h. proteus) in vacuum-packed raw lamb， including growth ability， degradation of protein and lipid， and change of volatile organic compounds (VOCs) profile， meanwhile screened the key VOCs produced by the targeted strains with meat background excluding， finally confirmed the volatile spoilage marker of vacuum-packaged lamb by comparing with our previous work. The results showed that L. sakei， S. proteamaculans and h. proteus had excellent growth ability. L. sakei inoculated group significantly reduced the ph value， showed higher TCA-soluble peptides content， and excellently degraded sarcoplasmic and myofibrillar proteins. About free amino acids， L. sakei significantly degraded serine， arginine and aspartic acid， while S. proteamaculans and h. proteus significantly degraded serine and lysine. In addition， L. sakei had a strongest effect on promoting free fatty acids production， followed by S. proteamaculans and finally h. proteus. Evaluating from various indicators， the co-culture of the three strains did not have any effect. The key volatiles produced by L. sakei were 1-hexanol， acetic acid and hexanoic aicd， S. proteamaculans were 1-hexanol and acetoin， and h. proteus was 1-hexanol， acetic acid and acetoin. In the end， 1-hexanol， hexanoic acid and acetoin were proven to be spoilage markers for vacuum-packaged and chilled lamb. This study can provide fundamental information for inhibiting and rapid identification of spoilage in vacuum-packaged lamb.

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含钛高炉渣制备复合吸附剂及其铬吸附性能

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化工进展 2024年第3期43卷 1552-1564页

作者：董晓涵田月苏毅昆明理工大学化学工程学院云南昆明650000

Cr(Ⅵ)是一种有害污染物,既污染水环境,也会对人体造成伤害。本文以工业固废含钛高炉渣为原料,通过酸浸得到浸出渣基体,经壳聚糖改性,制备一种新型GLZ-jcz/CS复合吸附剂,用来去除废水中的Cr(Ⅵ)。研究了吸附温度、废水ph、吸附剂量、Cr(... 详细信息

Cr(Ⅵ)是一种有害污染物,既污染水环境,也会对人体造成伤害。本文以工业固废含钛高炉渣为原料,通过酸浸得到浸出渣基体,经壳聚糖改性,制备一种新型GLZ-jcz/CS复合吸附剂,用来去除废水中的Cr(Ⅵ)。研究了吸附温度、废水ph、吸附剂量、Cr(Ⅵ)初始浓度、吸附时间对Cr(Ⅵ)吸附性能的影响。以Cr(Ⅵ)吸附率为评价指标,确定最优实验条件,并研究了GLZ-jcz/CS复合吸附剂的再生性能。采用扫描电子显微镜、傅里叶红外变换光谱仪、X射线光电子能谱仪、BET比表面积测试仪对GLZ-jcz/CS复合吸附剂进行表征,结合吸附动力学模型和吸附等温线模型分析,确定吸附机理。实验结果表明:当吸附温度为70℃、废水ph=4、吸附剂用量为0.13g、Cr(Ⅵ)初始浓度为50mg/L、吸附时间为2h时,吸附率达到99.8%,吸附容量可以达到67mg/g,GLZ-jcz/CS复合吸附剂经过6次洗脱,吸附率仍可达到96%以上,吸附模型符合拟二级动力学模型和Langmuir吸附等温模型。

关键词：复合吸附剂 Cr(Ⅵ)吸附率动力学模型等温线模型含钛高炉渣壳聚糖改性

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Two polyoxovanadoborates with over 100 nuclei assembled from a {VCoB} cluster

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Science China Chemistry 2024年

作者： Shuang-Xue Wu Yu-Jiao Dong Yang Yang Chao Qin Chun-Yi sun Wei Guan Xin-Long Wang Zhong-Min su Key Laboratory of Polyoxometalate and Reticular Material Chemistry of Ministry of Education Northeast Normal University School of Chemistry and Environmental Engineering Changchun University of Science and Technology Key Laboratory of Advanced Materials of Tropical Island Resources Hainan University

Combining theoretical prediction and experimental exploration,the first sandwich-type polyoxovanadoborate (POVB) with an odd number of nuclei,[V11B26O73(Oh)10]8-(1),was discovered under hydrothermal ***-functional theory (DFT)gives a rationalization for the existence of this structure and the structural feature is consistent with the{VNB2N+X}(X=2,4,6,8)general ***,when Co and 1,10-phenanthroline (phen) are introduced into the synthesis of vanadoborates system,a 100-nuclei[Co6(phen)10(h2O)8][V14Co12B72O144(Oh)20]·28h2O (2) and a 102-nuclei[Co6(phen)14(h2O)4][V14Co12B72O144(Oh)20]·23h2O (3) with the same core structure of[V14Co12B72]12-are *** vase-shaped[V14Co12B72]polyanion is a multilayered sandwich-type structure containing seven distinct structural layers and is the largest known ***,2demonstrates exceptional thermal and chemical stability and serves as an efficient and stable catalyst for the photoreduction of carbon dioxide.

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U型平板微热管LED散热器散热性能分析

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农业工程学报 2024年第9期40卷 227-235页

作者：余万韩煜王岗苏华山胡涛苏良彬董裴芹三峡大学水电机械设备设计与维护湖北省重点实验室宜昌443002 三峡大学机械与动力学院宜昌443002

针对目前LED表面发热量较大,局部温度过高,而导致其使用寿命减少的问题,该研究以平板微热管为核心传热元件,与锯齿形翅片结合,设计了一种U型平板微热管散热器。采用试验和仿真模拟相结合的方法,对不同风速、翅片结构、翅高及翅间距等关... 详细信息

针对目前LED表面发热量较大,局部温度过高,而导致其使用寿命减少的问题,该研究以平板微热管为核心传热元件,与锯齿形翅片结合,设计了一种U型平板微热管散热器。采用试验和仿真模拟相结合的方法,对不同风速、翅片结构、翅高及翅间距等关键影响因素进行分析。结果表明:通过对比分析U型平板微热管在两种室外工况下各测点试验值和模拟值,散热稳定后温度的最大误差分别为4.2%和6.7%,验证了模型的可靠性。风速分别为0.5和3.0 m/s时,锯齿型翅片都具有良好的散热性能。当风速为3.0 m/s时,锯齿型翅片、W型翅片、直翅片散热器稳定后热源温度分别为34.3、35.5和39.1℃。为找到最佳工况和结构,进行了正交分析,当室外风速为3.5 m/s,锯齿型翅片翅高为12 mm,翅间距为8 mm时,U型热管具有较佳的散热性能。研究结果可为LED散热系统的设计提供数据参考和设计思路,拓宽LED光源的应用范围。

关键词：数值模拟试验散热 U型平板微热管翅片正交分析

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Enabling an Inorganic-Rich Interface via Cationic surfactant for high-Performance Lithium Metal Batteries

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Nano-Micro Letters 2024年第8期16卷 1-17页

作者： Zejun sun Jinlin Yang hongfei Xu Chonglai Jiang Yuxiang Niu Xu Lian Yuan Liu Ruiqi su Dayu Liu Yu Long Meng Wang Jingyu Mao haotian Yang Baihua Cui Yukun Xiao Ganwen Chen Qi Zhang Zhenxiang Xing Jisheng Pan Gang Wu Wei Chen Department of Chemistry National University of Singapore3 Science Drive 3Singapore 117543Singapore Agency for Science Technology and Research(A*STAR)Institute of High-Performance Computing1 Fusionopolis Way#16‑16 ConnexisSingapore 138632Singapore Department of Physics National University of Singapore2 Science Drive 3Singapore 117542Singapore Joint School of National University of Singapore and Tianjin University International Campus of Tianjin UniversityBinhai New CityFuzhou 350207People’s Republic of China Agency for Science Technologyand Research(A*STAR)Institute of Materials Research and EngineeringInnovis2 Fusionopolis Way#08‑03Singapore 138634Singapore

An anion-rich electric double layer(EDL)region is favorable for fabricating an inorganic-rich solid-electrolyte interphase(SEI)towards stable lithium metal anode in ester ***,cetyltrimethylammonium bromide(CTAB),a cationic surfactant,is adopted to draw more anions into EDL by ionic interactions that shield the repelling force on anions during lithium *** situ electrochemical surface-enhanced Raman spectroscopy results combined with molecular dynamics simulations validate the enrichment of NO_(3)^(−)/FSI−anions in the EDL region due to the positively charged CTA^(+).In-depth analysis of SEI structure by X-ray photoelectron spectroscopy and time-of-flight secondary ion mass spectrometry results confirmed the formation of the inorganic-rich SEI,which helps improve the kinetics of Li^(+)transfer,lower the charge transfer activation energy,and homogenize Li *** a result,the Li||Li symmetric cell in the designed electrolyte displays a prolongated cycling time from 500 to 1300 h compared to that in the blank electrolyte at 0.5 mA cm^(-2) with a capacity of 1 mAh cm^(-2).Moreover,Li||LiFePO_(4) and Li||LiCoO_(2) with a high cathode mass loading of>10 mg cm^(-2) can be stably cycled over 180 cycles.

关键词： Cationic surfactant Lithium nitrate additive Solid-electrolyte interphase Electric double layer Lithium metal batteries

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Evidence for distortion-induced local electric polarization in α-RuCl3

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Science China(Physics,Mechanics & Astronomy) 2024年第9期Mechanics & Astronomy) .卷 169-177页

作者： Xinrun Mi De hou Xiao Wang Sabreen hammouda Caixing Liu Zijian Xiong han Li Yan Liu Guiwen Wang Aifeng Wang Yisheng Chai Yang Qi Wei Li Xiaoyuan Zhou Yixi su D.I.Khomskii Mingquan he Zhigao Sheng Young sun College of Physics Center of Quantum Materials and DevicesChongqing University Anhui Key Laboratory of Condensed Matter Physics at Extreme Conditions High Magnetic Field LaboratoryHefei Institutes of Physical ScienceAnhuiChinese Academy of Sciences University of Science and Technology of China Jülich Centre for Neutron Scienceat heinz Maier-Leibnitz Zentrum(JCNS-MLZ) Forschungszentrum Jülich GmbH School of Physics Beihang University Analytical and Testing Center Chongqing University State Key Laboratory of surface Physics Department of PhysicsFudan University CAS Key Laboratory of Theoretical Physics Institute of Theoretical PhysicsChinese Academy of Sciences Ⅱ.Physikalisches Institut Universit?t zu K?ln

The spin-orbit assisted Mott insulator α-RuCl3is a prime candidate for material realization of the Kitaev quantum spin *** little attention has been paid to charge degrees of freedom, charge effects, such as electric polarization, may arise in this system. here, we report distortion-induced local electric polarization in α-RuCl3as evidenced by single-crystal X-ray diffraction,second harmonic generation（ShG） and dielectric measurements. The ShG signal appears at room temperature and develops substantially in the Kitaev paramagnetic state when short-range spin correlations come into play. Despite sizable pyroelectric currents in the Kitaev paramagnetic state, the absence of hysteresis in the polarization-electric field（P-E） points to the shortrange nature of electric polarization. This localized electric polarization is likely the result of distortion-induced charge dimerization, achieved through virtual hopping-induced charge redistribution. In addition, the electric polarization is boosted by short-range spin correlations via spin-phonon coupling in the Kitaev paramagnetic state. Our results emphasize the importance of charge degrees of freedom in α-RuCl3, which establish a novel platform to investigate charge effects in Kitaev materials.

关键词： Mott insulator Kitaev quantum spin liquid electric polarization

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Preparation of α-high Strength Gypsum from Flue Gas Desulfurization Gypsum Pretreated by hydrothermal-aging Method

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Journal of Wuhan University of Technology(Materials Science) 2024年第1期39卷 75-81页

作者：苏一鑫 GAO Lili 陈学青 LI Zhishui 李雲 CAO Jilin Engineering Research Center of Seawater Utilization Technology of Ministry of Education School of Chemical Engineering and TechnologyHebei University of TechnologyTianjin 300130China heze Center for Disease Control and Prevention Heze 274010China Tianjin Bohua Yongli Chemical Industry Co. Ltd.Tianjin 300452China

The synthesis of α-calcium sulfate hemihydrate (α-CSh) from flue gas desulfurization (FGD)gypsum is a good way to realize the comprehensive utilization of FGD gypsum. To obtainα-CSh with the satisfactory performances, a facile hydrothermal-aging pretreatment process for FGD gypsum raw materials was proposed, where FGD gypsum was firstly hydrothermally converted to α-CSh whiskers, and α-CSh whiskers were further hydrated to synthesize CaSO4·2h2O (CSD) by aging under the regulation of N,N'-methylenebisacrylamide (MBA). The effects of aging time, MBA addition, aging temperature, and ph on the morphology of the synthesized CSD were investigated. The synthesized CSD crystals exhibit highly uniform prismatic morphology with the length of ca 100μm and the whiteness of 91.56%. The regulation mechanism of MBA was also illustrated. The synthesized CSD crystals with prismatic morphology were further used as raw materials to synthesize the short columnar α-CSh. The absolute dry compressive strength of paste prepared from the short columnar α-CSh is 40.85 MPa, which reaches α40 strength grade.

关键词： flue gas desulphurization gypsum α-calcium sulfate hemihydrate hydrothermal-aging method N,N'-methylenebisacrylamide prismatic CSD

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口腔手术机器人辅助显微根尖手术操作准确性和手术时间的体外模型研究

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中华口腔医学杂志 2024年第8期59卷 816-822页

作者：苏航赵文博李昕茹宿玉成周立波佳木斯大学附属口腔医院数字化种植科、佳木斯大学口腔医学院、佳木斯大学口腔医学工程实验中心、黑龙江省口腔生物医学材料及临床应用重点实验室佳木斯154002 中国医学科学院、北京协和医学院、北京协和医院口腔种植中心北京100032

目的探讨仿真头颅模型上口腔手术机器人辅助显微根尖手术的操作准确性和手术时间,为临床提供参考。方法将3对牙颌模型安装于仿真头颅模型上,每对牙颌模型选择前后牙各10颗,由1位具有3年以上显微根尖手术经验的主治医师分别于自由手、静... 详细信息

目的探讨仿真头颅模型上口腔手术机器人辅助显微根尖手术的操作准确性和手术时间,为临床提供参考。方法将3对牙颌模型安装于仿真头颅模型上,每对牙颌模型选择前后牙各10颗,由1位具有3年以上显微根尖手术经验的主治医师分别于自由手、静态导板和口腔手术机器人辅助下完成3组显微根尖手术的定点去骨开窗和根尖切除操作(每种技术使用1对牙颌模型,各20颗牙,共60颗牙),并记录手术时间。术前拍摄锥形束CT,于软件中规划手术路径;术后于模型的手术路径中插入塞规(用以测量孔尺寸的精密量具),并进行口内扫描,评估3组手术操作准确性(起点、终点和角度偏差),并比较手术时间。结果手术机器人组起点偏差、终点偏差和角度偏差[分别为(0.37±0.11)、(0.37±0.10)mm,0.71°±0.17°]均显著小于静态导板组[分别为(0.59±0.14)、(0.65±0.18)mm,2.64°±0.75°](P0.05)。结论口腔手术机器人辅助显微根尖手术可提高临床医师操作的准确性,缩短手术时间。

关键词：机器人根尖切除术外科手术,计算机辅助显微根尖手术精度

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老年股骨转子间骨折髓内固定术中局部应用凝血酶对术后失血量的影响研究

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中华创伤骨科杂志 2024年第6期26卷 493-498页

作者：何松峡苏炜魏鹏宁波大学附属第一医院整形修复重建外科宁波315010 宁波一院龙山医院医疗健康集团骨科浙江慈溪315300

目的:探讨股骨近端防旋髓内钉(PFNA)固定老年股骨转子间骨折术中局部应用凝血酶对术后失血量的影响。方法:回顾性分析2021年1月至2023年12月期间宁波一院龙山医院医疗健康集团骨科收治的50例股骨转子间骨折患者资料。根据内固定术中局... 详细信息

目的:探讨股骨近端防旋髓内钉(PFNA)固定老年股骨转子间骨折术中局部应用凝血酶对术后失血量的影响。方法:回顾性分析2021年1月至2023年12月期间宁波一院龙山医院医疗健康集团骨科收治的50例股骨转子间骨折患者资料。根据内固定术中局部是否应用凝血酶分为两组:治疗组25例,男9例,女16例;年龄(76.5±10.1)岁;在完成PFNA置入后将6支凝血酶冻干粉溶于60 mL无菌生理盐水,于主钉切口内喷洒30 mL,螺旋刀片切口内喷洒20 mL,远端锁钉切口内喷洒10 mL。对照组25例,男11例,女14例;年龄(71.1±10.1)岁;在完成PFNA置入后用相同剂量的生理盐水冲洗伤口。比较两组患者术后第1、3、7天的血红蛋白(hb)和红细胞比容(hct),以及总失血量、隐性失血量、输血率、深静脉血栓形成(DVT)的发生情况等。结果:两组患者术前一般资料及手术时间比较差异均无统计学意义( P>0.05),具有可比性。治疗组患者术后第1、3、7天hb分别为(101.48±12.15)、(102.96±12.76)、(107.24±13.47)g/L,hct分别为(0.31±0.03)、(0.32±0.03)、(0.33±0.04),均显著高于对照组患者[(92.72±10.95)、(86.52±7.43)、(91.56±10.24)g/L,(0.28±0.03)、(0.26±0.03)、(0.27±0.03)],差异均有统计学意义( P0.05)。结论:老年股骨转子间骨折PFNA固定术中局部应用凝血酶可明显减少患者术后失血量,且不会增加术后DVT等并发症的发生。

关键词：髋骨折骨折固定术,髓内骨钉手术后出血股骨近端防旋髓内钉

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