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Sulfone-functionalized stable molecular single crystals for photocatalytic hydrogen evolution

SusMat 2024年第3期4卷 240-250页

作者： Xunliang Hu Xiaoju yang Bingyi Song Zhen Zhan Ruixue Sun Yantong Guo Li-Ming yang Xuan yang chun Zhang Irshad Hussain Xiaoyan Wang Bien Tan Key Laboratory of Material Chemistry for Energy Conversion and Storage Ministry of Education Hubei Key Laboratory of Material Chemistry and Service FailureSchool of Chemistry and Chemical EngineeringHuazhong University of Science and TechnologyWuhanChina Department of Applied Physics The Hong Kong Polytechnic UniversityKowloonHong KongChina College of Life Science&Technology Huazhong University of Science and TechnologyWuhanChina Department of Chemistry and Chemical Engineering SBA School of Science and EngineeringLahore University of Management SciencesLahorePakistan

Highly crystalline organic semiconductors are ideal materials for photocatalytic hydrogen evolution in water ***,the instability and complex synthesis processes of most reported organic molecule-based photocatalysts restrict their *** this study,we introduce benzo[1,2-b:4,5-bʹ]bis[1]benzothiophene-3,9-dicarboxylic acid,5,5,11,11-tetraoxide(FSOCA),a highly crystalline,stable molecular crystal that is easy to synthesize and serves as an efficient photocatalyst for the hydrogen evolution *** exhibits high efficiency in sacrificial hydrogen evolution reaction(760μmol h^(−1),76 mmol g^(−1)h^(−1)at 330 mW cm^(−2);570μmol h^(−1),57 mmol g^(−1)h^(−1)at 250 mW cm^(−2)),and FSOCA remains stable during photocatalysis for up to 400 *** and theoretical studies confirmed the presence of hydrogen bonds between the sulfone group and the sacrificial agent(ascorbic acid).This interaction significantly improved the oxidation reaction kinetics and boosted the photocatalytic *** study presents a scalable and convenient approach to synthesize highly crystalline,active,and stable organic photocatalysts with potential applications in large-scale photocatalysis.

关键词： exceptional durability molecular single crystals photocatalytic water splitting

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Seasonal Characteristics of Forecasting Uncertainties in Surface PM_(2.5)Concentration Associated with Forecast Lead Time over the Beijing-Tianjin-Hebei Region

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Advances in Atmospheric Sciences 2024年第5期41卷 801-816页

作者： Qiuyan DU chun ZHAO Jiawang FENG Zining yang Jiamin XU Jun GU Mingshuai ZHANG Mingyue XU Shengfu LIN Deep Space Exploration Laboratory/School of Earth and Space Sciences University of Science and Technology of ChinaHefei 230026China CAS Center for Excellence in Comparative Planetology University of Science and Technology of ChinaHefei 230026China

Forecasting uncertainties among meteorological fields have long been recognized as the main limitation on the accuracy and predictability of air quality ***,the particular impact of meteorological forecasting uncertainties on air quality forecasts specific to different seasons is still not well *** this study,a series of forecasts with different forecast lead times for January,April,July,and October of 2018 are conducted over the Beijing-Tianjin-Hebei(BTH)region and the impacts of meteorological forecasting uncertainties on surface PM_(2.5)concentration forecasts with each lead time are *** increased lead time,the forecasted PM_(2.5)concentrations significantly change and demonstrate obvious seasonal *** general,the forecasting uncertainties in monthly mean surface PM_(2.5)concentrations in the BTH region due to lead time are the largest(80%)in spring,followed by autumn(~50%),summer(~40%),and winter(20%).In winter,the forecasting uncertainties in total surface PM_(2.5)mass due to lead time are mainly due to the uncertainties in PBL heights and hence the PBL mixing of anthropogenic primary *** spring,the forecasting uncertainties are mainly from the impacts of lead time on lower-tropospheric northwesterly winds,thereby further enhancing the condensation production of anthropogenic secondary particles by the long-range transport of natural *** summer,the forecasting uncertainties result mainly from the decrease in dry and wet deposition rates,which are associated with the reduction of near-surface wind speed and precipitation *** autumn,the forecasting uncertainties arise mainly from the change in the transport of remote natural dust and anthropogenic particles,which is associated with changes in the large-scale circulation.

关键词： PM_(2.5) forecasting uncertainties forecast lead time meteorological fields Beijing-Tianjin-Hebei region

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Should we perform sigmoidoscopy for colorectal cancer screening in people under 45 years?

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World Journal of Gastrointestinal Oncology 2024年第4期16卷 1248-1255页

作者： Waiian Leong Jia-Qi Guo chun Ning Fei-Fei Luo Rui Jiao Dong-Ye yang Division of Gastroenterology&Hepatology The University of Hong Kong-Shenzhen HospitalShenzhen 518053Guangdong ProvinceChina Department of Accident&Emergency The University of Hong Kong-Shenzhen HospitalShenzhen 518053Guangdong ProvinceChina Department of Anatomical Pathology The University of Hong Kong-Shenzhen HospitalShenzhen 518053Guangdong ProvinceChina Endoscopy Center The University of Hong Kong-Shenzhen HospitalShenzhen 518053Guangdong ProvinceChin

BACKGROUND The strategy for preventing colorectal cancer is screening by colonoscopy,which offers a direct way for detection and removal of adenomatous polyps(APs).American College of Gastroenterology guidelines recommend that people aged≥45 years should undergo colonoscopy;however,how to deal with people aged≤45 years is still *** To compare the prevalence of APs and high-grade neoplasia between the left and right colon in patients≤45 *** A retrospective observational study was conducted at a single tertiary III hospital in *** study included patients aged 18-45 years with undergoing initial colonoscopy dissection and pathological diagnosis AP or high-grade neoplasia between February 2014 and January *** number of APs in the entire colon while screening and post-polypectomy surveillance in following 1-3 years were *** A total of 3053 cases were *** prevalence of APs in the left and right colon was 55.0%and 41.6%,respectively(OR 1.7,95%CI 1.6-2.4;P3 polyps(14.1%;OR 0.3,95%CI 0.1-0.6;P<0.05).CONCLUSION This study suggests that flexible sigmoidoscopy would be an optimal approach for initial screening in people aged≤45 years and would be a more cost-effective and safe strategy.

关键词： Adenomatous polyps High-grade neoplasia Colonoscopy Flexible sigmoidoscopy

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Differential distribution of fibrovascular proliferative membranes in 25-gauge vitrectomy for proliferative diabetic retinopathy

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International Journal of Ophthalmology(English edition) 2024年第8期17卷 1462-1468页

作者： Nan Lu Shi-Lin yang Shuo Guo Dong-Ni yang Li Liu chun-Hui Fan Ying Guo Jian Liu Wei Zhao Department of Ophthalmology the First Hospital of QinhuangdaoQinhuangdao 066000Hebei ProvinceChina School of Control Engineering Northeastern University at QinhuangdaoQinhuangdao 066004Hebei ProvinceChina

AIM:To analyze the distribution of fibrovascular proliferative membranes(FVPMs)in proliferative diabetic retinopathy(PDR)patients that treated with pars plana vitrectomy(PPV),and to evaluate the outcomes ***:This was a retrospective and cross-sectional *** 25-gauge(25-G)PPV cases operated for PDR from May 2018 to April *** to the FVPMs images outlined after operations,subjects were assigned into three groups:arcade type group,juxtapapillary type group,and central type *** patients were followed up for over one *** characteristics,operation-related variables,postoperative parameters and complications were ***:Among 103 eyes recruited,the FVPMs distribution of nasotemporal and inferiosuperioral was significantly different(both P<0.01),with 95(92.23%)FVPMs located in the nasal quadrants,and 74(71.84%)in the *** eyes with a central FVPM required the longest operation time,with silicon oil used in most patients,generally combined with tractional retinal detachment(RD)and rhegmatogenous RD,the worst postoperative bestcorrected visual acuity(BCVA)and the highest rates of recurrent RD(all P<0.05).FVPM type,age of onset diabetes mellitus,preoperative BCVA,and combined with tractional RD and rhegmatogenous RD were significantly associated with BCVA improvement(all P<0.05).Compared with the central type group,the arcade type group had higher rates of BCVA ***:FVPMs are more commonly found in the nasal and inferior mid-peripheral retina in addition to the area of arcade *** 25-G PPV for treating PDR eyes with central FVPM have relatively worse prognosis.

关键词： proliferative diabetic retinopathy fibrovascular proliferative membrane 25-gauge pars plana vitrectomy

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Silk fibroin-based flexible pressure sensors:processing and application

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Materials Futures 2024年第3期3卷 71-94页

作者： Muhan Chen Junhong Liu Yidi Hu Yujie Wu chun-Yan Tang Kai Ke Wei yang College of Polymer Science and Engineering Sichuan UniversityState Key Laboratory of Polymer Materials EngineeringChengdu 610065SichuanPeople’s Republic of China

With the advent of the internet of things and artificial intelligence,flexible and portable pressure sensors have shown great application potential in human-computer interaction,personalized medicine and other *** comparison with traditional inorganic materials,flexible polymeric materials conformable to the human body are more suitable for the fabrication of wearable pressure *** the consumption of a huge amount of flexible wearable electronics in near future,it is necessary to turn their attention to biodegradable polymers for the fabrication of flexible pressure sensors toward the development requirement of green and sustainable *** this paper,the structure and properties of silk fibroin(SF)are introduced,and the source and research progress of the piezoelectric properties of SF are systematically *** addition,this paper summarizes the advance in the studies on SF-based capacitive,resistive,triboelectric,and piezoelectric sensors reported in recent years,and focuses on their fabrication methods and ***,this paper also puts forward the future development trend of high-efficiency fabrication and corresponding application of SF-based piezoelectric *** offers new insights into the design and fabrication of green and biodegradable bioelectronics for in vitro and in vivo sensing applications.

关键词： silk fibroin flexible pressure sensor piezoelectric biodegradable healthcare

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Engineering neuroregenerative microenvironment via aligned hydrogel-assisted magnetic stimulation for complete spinal cord injury repair

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Engineered Regeneration 2024年第2期5卷 139-152页

作者： chun-Yi yang Zhe Meng Zhijun He Pengchao Ma Zhaohui Hou Kunkoo Kim Jingsong Lu Kaiyuan yang Guihuai Wang Xiumei Wang State Key Laboratory of New Ceramics and Fine Processing Key Laboratory of Advanced Materials of Ministry of EducationSchool of Materials Science and EngineeringTsinghua UniversityBeijing 100084China Department of Neurosurgery Beijing Tsinghua Changgung HospitalSchool of Clinical MedicineTsinghua UniversityBeijing102218China

Utilizing biomaterials in tissue engineering has shown considerable promise for tissue regeneration,particularly through delivering multimodel cell-regulatory signals,including the material-related signals and extrinsic *** this research,we developed a magnetic-responsive aligned nanofiber fibrin hydrogel(MAFG),integrating the structured alignment of nanofibers and the pliability of fibrin hydrogel with an external magnetic *** design aimed to enhance the regenerative response in spinal cord injury treatment.A medium-strength magnetic field,aligned with the spinal cord,was applied to aid motor function recovery in rats with spinal cord *** use of MAFG in this context not only intensified the effect of the magnetic field but also encouraged the activation and differentiation of native neural stem ***,this method effectively steered macrophage polarization towards a beneficial M2 phenotype,addressing immune dysregulation at the injury *** parallel application of magnetic field stimulation through MAFG in a spinal cord injury model contributed to the concurrent promotion of neurogenesis,angiogenesis,and immunomodulation,resulting in marked improvement in motor function in *** investigation underscores the therapeutic potential of magnetic field stimulation and highlights how aligning this stimulation with the spinal cord can significantly enhance the regenerative milieu at the injury site.

关键词： Angiogenesis Neurogenesis Immunomodulation Magnetic-responsive hydrogel Magnetic stimulation

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患儿血流感染革兰阴性杆菌的构成与耐药性

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中华医院感染学杂志 2015年第22期25卷 5236-5238页

作者：郑华月郑春阳刘纳南阳医学高等专科学校第一附属医院儿科河南南阳473000 南阳医学高等专科学校第一附属医院内科河南南阳473000 南阳医学高等专科学校第一附属医院心外科河南南阳473000

目的探讨血流感染患儿革兰阴性杆菌构成及耐药性变化,为临床控制血流感染提供参考。方法对2008年8月-2014年3月532例临床诊断或疑诊为败血症(菌血症)的患儿采集静脉血标本,采用VITEK-2型全自动菌株鉴定仪进行病原菌培养、鉴定及药敏试验... 详细信息

目的探讨血流感染患儿革兰阴性杆菌构成及耐药性变化,为临床控制血流感染提供参考。方法对2008年8月-2014年3月532例临床诊断或疑诊为败血症(菌血症)的患儿采集静脉血标本,采用VITEK-2型全自动菌株鉴定仪进行病原菌培养、鉴定及药敏试验,并进行分析。结果送检血液标本532份,分离出病原菌114株,检出阳性率21.43%,革兰阳性菌占55.26%,革兰阴性菌占42.98%,真菌占1.76%;大肠埃希菌、肺炎克雷伯菌中产ESBLs菌株分别占44.44%、75.00%;主要感染革兰阴性菌大肠埃希菌、肺炎克雷伯菌、沙门菌属均对亚胺培南100.00%敏感,大肠埃希菌、肺炎克雷伯菌对庆大霉素、头孢唑林、氨苄西林、头孢呋辛、头孢他啶耐药率≥50.00%,沙门菌属对头孢哌酮/舒巴坦、哌拉西林/舒巴坦100.00%敏感,对氨苄西林耐药率>50.00%。结论儿科收治的血流感染患儿感染革兰阴性菌主要以大肠埃希菌、肺炎克雷伯菌、沙门菌属多见,对临床常用抗菌药物中青霉素及头孢类耐药较为普遍,在确定存在儿科血流感染时可考虑使用碳青霉烯类抗菌药物作为首选。

关键词：儿科血流感染革兰阴性菌耐药性

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High-efficiency sodium storage of Co_(0.85)Se/WSe_(2) encapsulated in N-doped carbon polyhedron via vacancy and heterojunction engineering

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Carbon Energy 2024年第1期6卷 94-107页

作者： Ya Ru Pei Hong Yu Zhou Ming Zhao Jian Chen Li Xin Ge Wei Zhang chun Cheng yang Qing Jiang Key Laboratory of Automobile Materials(Jilin University) Ministry of EducationSchool of Materials Science and EngineeringJilin UniversityChangchunChina Jilin Provincial International Cooperation Key Laboratory of High-Efficiency Clean Energy Materials Electron Microscopy CenterJilin UniversityChangchunChina

With the advantage of fast charge transfer,heterojunction engineering is identified as a viable method to reinforce the anodes'sodium storage ***,vacancies can effectively strengthen the Na+adsorption ability and provide extra active sites for Na+***,their synchronous engineering is rarely ***,a hybrid of Co_(0.85)Se/WSe_(2) heterostructure with Se vacancies and N-doped carbon polyhedron(CoWSe/NCP)has been fabricated for the first time via a hydrothermal and subsequent selenization *** aberration-corrected transmission electron microscopy confirms the phase interface of the Co_(0.85)Se/WSe_(2) heterostructure and the existence of Se *** functional theory simulations reveal the accelerated charge transfer and enhanced Na+adsorption ability,which are contributed by the Co_(0.85)Se/WSe_(2) heterostructure and Se vacancies,*** expected,the CoWSe/NCP anode in sodium-ion battery achieves outstanding rate capability(339.6 mAh g^(−1) at 20 A g^(−1)),outperforming almost all Co/W-based selenides.

关键词： Co_(0.85)Se/WSe_(2)heterostructure density functional theory simulations N-doped carbon polyhedron Se vacancies sodium-ion batteries

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无溶剂乌尔曼反应高效合成吡啶胺

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化学试剂 2018年第4期40卷 397-399页

作者：胡学成郑静郑春阳湖北师范大学化学化工学院湖北黄石435002 湖北师范大学文理学院湖北黄石435002

以2-溴吡啶和2-氨基吡啶为原料,通过采用改进后的乌尔曼反应,在无溶剂条件下,控制反应原料比例,高效地合成了两种多吡啶胺化合物,即2,2＇-二吡啶胺和2,2＇,2″-三吡啶胺。产物结构通过电喷雾质谱、核磁共振进行了确证和表征。另外,2,2... 详细信息

以2-溴吡啶和2-氨基吡啶为原料,通过采用改进后的乌尔曼反应,在无溶剂条件下,控制反应原料比例,高效地合成了两种多吡啶胺化合物,即2,2＇-二吡啶胺和2,2＇,2″-三吡啶胺。产物结构通过电喷雾质谱、核磁共振进行了确证和表征。另外,2,2＇,2″-三吡啶胺的高氯酸盐结构经X-射线衍射进行了确认。晶体结构显示,质子化的三吡啶胺盐中存在强烈的N…H—N分子内氢键作用。

关键词：无溶剂乌尔曼反应合成表征晶体结构

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Construction of a predictive model for acute liver failure after hepatectomy based on neutrophil-to-lymphocyte ratio and albuminbilirubin score

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World Journal of Gastrointestinal Surgery 2024年第4期16卷 1087-1096页

作者： Xiao-Pei Li Zeng-Tao Bao Li Wang chun-Yan Zhang Wen yang Department of Family Planning and Assisted Reproductive Technology The First People’s Hospital of LianyungangLianyungang 222000Jiangsu ProvinceChina Department of Gastrointestinal Surgery The First People’s Hospital of LianyungangLianyungang 222000Jiangsu ProvinceChina Department of Laboratory Medicine The First People’s Hospital of LianyungangLianyungang 222000Jiangsu ProvinceChina Department of Gynecology The First People’s Hospital of LianyungangLianyungang 222000Jiangsu ProvinceChina

BACKGROUND Acute liver failure(ALF)is a common cause of postoperative death in patients with hepatocellular carcinoma(HCC)and is a serious threat to patient *** neutrophil-to-lymphocyte ratio(NLR)is a common inflammatory indicator that is associated with the prognosis of various diseases,and the albumin-bilirubin score(ALBI)is used to evaluate liver function in liver cancer ***,this study aimed to construct a predictive model for postoperative ALF in HCC tumor integrity resection(R0)based on the NLR and ALBI,providing a basis for clinicians to choose appropriate treatment *** To construct an ALF prediction model after R0 surgery for HCC based on NLR and *** In total,194 patients with HCC who visited The First People’s Hospital of Lianyungang to receive R0 between May 2018 and May 2023 were enrolled and divided into the ALF and non-ALF *** compared differences in the NLR and ALBI between the two *** risk factors of ALF after R0 surgery for HCC were screened in the univariate *** risk factors were analyzed by multifactorial logistic *** then constructed a prediction model of ALF after R0 surgery for HCC.A receiver operating characteristic curve,calibration curve,and decision curve analysis(DCA)were used to evaluate the value of the prediction *** Among 194 patients with HCC who met the standard inclusion criteria,46 cases of ALF occurred after R0(23.71%).There were significant differences in the NLR and ALBI between the two groups(P<0.05).The univariate analysis showed that alpha-fetoprotein(AFP)and blood loss volume(BLV)were significantly higher in the ALF group compared with the non-ALF group(P<0.05).The multifactorial analysis showed that NLR,ALBI,AFP,and BLV were independent risk factors for ALF after R0 surgery in *** predictive efficacy of NLR,ALBI,AFP,and BLV in predicting the occurrence of ALT after R0 surgery for HCC was average[area under the curve(AUC)NLR=0.767,AUCALB

关键词： Acute liver failure Hepatocellular carcinoma Hepatectomy Neutrophil-to-lymphocyte ratio Albumin-bilirubin score

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