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Machine learning assisted adsorption performance evaluation of biochar on heavy metal

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Frontiers of Environmental Science & Engineering 2024年第5期18卷 29-42页

作者： Qiannan Duan Pengwei Yan Yichen Feng Qianru Wan xiaoli zhu Shaanxi Key Laboratory of Earth Surface System and Environmental Carrying Capacity College of Urban and Environmental SciencesNorthwest UniversityXi’an710127China Department of Environment Science Shaanxi Normal UniversityXi’an710062China

Heavy metals(HMs)represent pervasive and highly toxic environmental pollutants,known for their long latency periods and high toxicity levels,which pose significant challenges for their removal and ***,the removal of heavy metals from the environment is crucial to ensure the water *** materials,known for their intricate pore structures and abundant oxygen-containing functional groups,are frequently harnessed for their effectiveness in mitigating heavy metal ***,conventional tests for optimizing biochar synthesis and assessing their heavy metal adsorption capabilities can be both costly and *** address this challenge,this paper proposes a data-driven machine learning(ML)approach to identify the optimal biochar preparation and adsorption reaction conditions,with the ultimate goal of maximizing their adsorption *** utilizing a data set comprising 476 instances of heavy metal absorption by biochar,seven classical integrated models and one stacking model were trained to rapidly predict the efficiency of heavy metal adsorption by *** predictions were based on diverse physicochemical properties of biochar and the specific adsorption reaction *** results demonstrate that the stacking model,which integrates multiple algorithms,allows for training with fewer samples to achieve higher prediction accuracy and improved generalization ability.

关键词： Machine learning Biochar Heavy metal Adsorption efficiency

Layer-by-layer epitaxy growth of thickness-controllable two-dimensional tungsten disulfide

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Science China(Information Sciences) 2024年第5期67卷 302-310页

作者： Jieyuan LIANG Zixing ZOU Junwu LIANG Di WANG Biao WANG Anshi CHU Jiali YI Cheng ZHANG Lizhen FANG Tian ZHANG Huawei LIU xiaoli zhu Dong LI Anlian PAN Key Laboratory for Micro-Nano Physics and Technology of Hunan Province State Key Laboratory of Chemo/Biosensing and Chemometrics Hunan Institute of Optoelectronic IntegrationCollege of Materials Science and Engineering School of Physics and ElectronicsHunan University School of Electronic Information and Electrical Engineering Changsha University School of Physics and Telecommunication Engineering Yulin Normal University Units Semiconductor Technology Co. Ltd. School of Physics and Electronics Hunan Normal University

Bilayer transition metal dichalcogenides（TMDs） balance the high mobility of single layers with the high state density of multilayers and therefore have promising application prospects in high-performance electronics. However, the layer-controlled growth of 2D materials is still confronted with challenges such as poor repeatability between different labs and a limited understanding of the growth mechanism at the atomic scale. Herein, we report a new carbon-assisted chemical vapor deposition process that can realize the growth of WS2sheets with high yield, precise thickness controllability, and repeatability. We show that carbon can act as a reducing agent and catalyst that preferentially reacts with the WO3precursor to form intermediate WO3-xproducts with low-valence state W. The resulting oxycarbide gas has a low surface adsorption energy when deposited on the surface of as-grown WS2, which provides nucleation sites for the subsequent layer of WS2growth and leads to the vertical growth of WS2sheets. The growth mechanism is thoroughly investigated. Electrical transport measurements show that the produced bilayer WS2possesses a high carrier mobility(up to 58 cm2·V-1·s-1) and small subthreshold swing（estimated to be 148 mV/decade）,which are among the best reported results for TMDs produced using CVD.

关键词： WS$_2$ thickness-controlled growth chemical vapor deposition additive carbon

支管轴压下高强钢圆管X形节点的承载力计算公式

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同济大学学报（自然科学版） 2024年第1期52卷 49-58,85页

作者：宁鹏童乐为朱小利同济大学土木工程防灾国家重点实验室上海200092 上海中侨职业技术大学建筑工程学院上海201514

研究了支管受压的Q460、Q690、Q960高强钢圆管X形节点的静力性能。采用经试验数据验证的有限元模型进行节点有限元参数分析,研究高强钢牌号、支管与主管外径之比(β)、主管外径与其管壁厚度之比(2γ)、主管轴向应力比(n)对节点性能的影... 详细信息

研究了支管受压的Q460、Q690、Q960高强钢圆管X形节点的静力性能。采用经试验数据验证的有限元模型进行节点有限元参数分析,研究高强钢牌号、支管与主管外径之比(β)、主管外径与其管壁厚度之比(2γ)、主管轴向应力比(n)对节点性能的影响;与有限元参数分析和文献中试验结果对比,评价我国钢结构设计标准计算公式的适用性。结果表明,节点发生主管塑性破坏,节点承载力多由主管局部变形限值(3%主管外径)确定;多数情况下钢结构设计标准计算公式高估了高强钢圆管X形节点的承载力;主管受到压力或较大拉力时均会降低节点承载力。最后,针对不同钢材牌号的圆管X形节点给出了建议的2γ范围。基于主管塑性破坏,提出了考虑高强钢屈服强度、主管拉压效应的圆管X形节点承载力计算公式。

关键词：高强钢系列圆管X形节点有限元分析主管拉压效应承载力

Endovascular embolization for upper gastrointestinal bleeding due to portal hypertension caused by a superior mesenteric arteriovenous fistula

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Portal Hypertension & Cirrhosis 2024年第1期3卷 39-42页

作者： Yu He Hong Nie Jian Shen Shuai Zhang Binyan Zhong xiaoli zhu Department of Interventional Radiology Shanghai Sixth People's HospitalShanghaiChina Department of Interventional Radiology The First Affiliated Hospital of Soochow UniversitySuzhouJiangsuChina

To the Editor,Upper gastrointestinal bleeding(UGIB)caused by portal hypertension is not uncommon in clinical practice,but UGIB caused by superior mesenteric arteriovenous fistula(SMAVF)is extremely *** primary etiologies of SMAVF are associated with traumatic or iatrogenic injury,and congenital lesions.1,2 Although many patients remain asymptomatic after unrecognized injury to the superior mesenteric artery(SMA)for many years,most previous studies reported delayed presentation of persistent epigastric pain,vomiting and nausea,ascites,mesenteric ischemia,or *** incidence of SMAVF is 0.09%,with a mortality rate of 39%–77%.3 Thus,prompt diagnosis and treatment are very important to prevent morbidity and mortality.

关键词： mortality bleeding hypertension

关于柳宗元“代人进瓷器状”中瓷器的若干问题分析

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陶瓷 2024年第7期 157-159页

作者：祝小莉景德镇陶瓷大学江西景德镇333403

手工业在中国古代的社会阶层排名中属末流,“万般皆下品、唯有读书高”,读书一直是考取功名、实现人生进阶的首选途径,而制瓷业属手工业范畴,并不受主流思想所推崇。和历史、文学等浩瀚如烟海的文献比较,手工业专著的文献只占其中很小... 详细信息

手工业在中国古代的社会阶层排名中属末流,“万般皆下品、唯有读书高”,读书一直是考取功名、实现人生进阶的首选途径,而制瓷业属手工业范畴,并不受主流思想所推崇。和历史、文学等浩瀚如烟海的文献比较,手工业专著的文献只占其中很小的比例,关于陶瓷的著作更是寥若晨星,直至《陶记》、《景德镇陶录》问世才有专门关于景德镇陶瓷的文献论述,追溯景德镇的制瓷史,一千多年窑火不止,据文献记载:“新平冶陶,始于汉世”。随着考古工作的推进,乐平南窑、湘湖兰田窑等古窑址的发现,把景德镇地区制瓷史有证可考的年代提到唐中期。而有些资料记载由于缺少实地出土物的证实补充,相关记载较为模糊,如柳宗元《代人进瓷器状》这篇关于进贡瓷器的状文即多有商榷之处。笔者即通过文献梳理结合实地考察,对这篇状文里提及的瓷器若干问题做解析。

关键词：陶瓷文献瓷器分析

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Impact of inhaled corticosteroid use on elderly chronic pulmonary disease patients with community acquired pneumonia

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Chinese Medical Journal 2024年第2期137卷 241-243页

作者： Xiudi Han Hong Wang Liang Chen Yimin Wang Hui Li Fei Zhou Xiqian Xing Chunxiao Zhang Lijun Suo Jinxiang Wang Guohua Yu Guangqiang Wang Xuexin Yao Hongxia Yu Lei Wang Meng Liu Chunxue Xue Bo Liu xiaoli zhu Yanli Li Ying Xiao Xiaojing Cui Lijuan Li Xuedong Liu Bin Cao Department of Pulmonary and Critical Care Medicine Qingdao Municipal HospitalQingdaoShandong 266011China Department of Nosocomial Infection Qingdao Municipal HospitalQingdaoShandong 266011China Department of Infectious Diseases Nanjing Lishui People’s HospitalNanjingJiangsu 211213China Department of Pulmonary and Critical Care Medicine National Clinical Research Center of Respiratory DiseasesCenter for Respiratory DiseasesChina-Japan Friendship HospitalBeijing 100020China Department of Respiratory Medicine Yan’an Hospital Affiliated to Kunming Medical UniversityKunmingYunnan 652199China Department of Respiratory Medicine Beijing Huimin HospitalBeijing 100054China Department of Pulmonary and Critical Care Medicine Zibo Municipal HospitalZiboShandong 255000China Department of Respiratory Medicine Beijing Luhe HospitalCapital Medical UniversityBeijing 101149China Department of Pulmonary and Critical Care Medicine Weifang No.2 People’s HospitalWeifangShandong 261599China Department of Respiratory Medicine Shandong University Affiliated Qilu Hospital(Qingdao)QingdaoShandong 266035China Department of Respiratory Medicine the 2nd Hospital of Beijing CorpsChinese Armed Police ForcesBeijing 100044China Department of Infectious Disease Qingdao University Medical College Affiliated Yantai Yuhuangding HospitalYantaiShandong 100191China Department of Respiratory Medicine Rizhao Chinese Medical Hospital Affiliated to Shandong Chinese Medical UniversityRizhaoShandong 276800China Department of Respiratory Medicine Beijing Hospital of Traditional Chinese Medicine Affiliated to Capital Medical UniversityBeijing 100010China Department of Occupational Medicine and Toxicology Beijing Chao-Yang HospitalCapital Medical UniversityBeijing 100020China

To the Editor:With an aging global population,the incidences of community-acquired pneumonia(CAP)and chronic obstructive pulmonary disease(COPD)have signicantly increased.[1]Previous studies have conrmed that COPD and asthma are independently associated with the prevalence of *** use of inhaled corticosteroid(ICS),the cornerstone of treatment for asthma,COPD with frequent acute exacerbations,and asthma-COPD overlap(ACO)may induce changes in the local lung microbiome and abnormal lung immunity,ultimately,causing a signicantly increased risk of ***,in cases of pneumonia,the effect of the use of ICS on CAP mortality remains *** data from one study favored the prior use of ICS,which was associated with a signicantly lower short-term mortality rate,[2]other studies have identied no impact on *** date,data on the impact of the use of ICS on mortality,prehospitalization or during hospitalization,are scarce,particularly in the older ***,this multicenter,retrospective study explored the association between the use of ICS during hospitalization and short-term mortality in older patients with CAP and those with chronic pulmonary disease(CPD).

关键词： pneumonia patients immunity

酪氨酸激酶抑制剂联合免疫检查点抑制剂在中晚期肝细胞癌二线治疗中的效果及安全性分析

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临床肝胆病杂志 2024年第08期40卷 1620-1626页

作者：聂宏仲斌演沈健朱晓黎苏州大学附属第一医院介入科

目的评估酪氨酸激酶抑制剂（TKI）联合免疫检查点抑制剂在中晚期肝细胞癌（HCC）二线治疗中的效果及安全性。方法收集2018年1月—2022年12月苏州大学附属第一医院介入科收治的经过经肝动脉化疗栓塞术（TACE）联合一线TKI治疗后进展/... 详细信息

目的评估酪氨酸激酶抑制剂（TKI）联合免疫检查点抑制剂在中晚期肝细胞癌（HCC）二线治疗中的效果及安全性。方法收集2018年1月—2022年12月苏州大学附属第一医院介入科收治的经过经肝动脉化疗栓塞术（TACE）联合一线TKI治疗后进展/不耐受，换用二线TKI联合或者不联合免疫检查点抑制剂的63例中晚期HCC患者的临床资料。其中使用二线TKI联合免疫检查点抑制剂共32例（联合组），使用二线TKI共31例（单纯组）。依据改良实体瘤疗效评价标准（m RECIST）评估肿瘤反应，根据通用不良事件术语5.0标准（CTCAE 5.0）评估不良事件。使用Kaplan-Meier法计算两组的中位生存期（mOS）、中位无进展生存期（mPFS）。比较两组的客观缓解率（ORR）和疾病控制率（DCR）。基线资料及随访结果的组间比较采用χ2检验。结果 63例患者中位随访时间为16.5（3.2～53.4）个月。联合组mOS、mPFS分别为24.3个月（95%CI:20.0～28.6）和9.8个月（95%CI:7.5～12.1）,15.8个月（95%CI:11.4～20.1）和4.1个月（95%CI:3.2～4.9），两组mOS、mPFS之间差异均有统计学意义（P值分别为0.029、0.038）。联合组ORR和DCR分别为47%和84%，单纯组为19%和65%，两组之间ORR差异有统计学意义（P=0.021）,DCR差异无统计学意义（P=0.070）。联合组中4例（12.5%）、单纯组中3例（10.0%）发生Ⅲ～Ⅳ级严重不良事件，两组均无药物不良反应致死事件，两组患者不良事件的发生率比较，差异无统计学意义（P=0.783）。结论与单用TKI治疗相比，TKI联合免疫检查点抑制剂作为中晚期HCC二线治疗的疗效更显著，且不会增加严重不良反应。

关键词：癌,肝细胞分子靶向治疗免疫疗法免疫检查点抑制剂

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图书馆开展电子书服务的版权许可策略探讨

河南图书馆学刊 2024年第7期44卷 114-116页

作者：朱晓丽淮安市少儿图书馆江苏淮安223001

图书馆开展电子书服务的版权许可具有复杂性的特点,版权管理的难度较大,其中的主要问题包括版权许可信息不对称、版权许可代价高昂、版权许可中无权可授等。从立法角度解决图书馆开展电子书服务版权问题的策略包括建立延伸性版权集体管... 详细信息

图书馆开展电子书服务的版权许可具有复杂性的特点,版权管理的难度较大,其中的主要问题包括版权许可信息不对称、版权许可代价高昂、版权许可中无权可授等。从立法角度解决图书馆开展电子书服务版权问题的策略包括建立延伸性版权集体管理制度、改良和施行版权使用补偿制度等,图书馆实践中的策略包括制定行业性的版权许可政策、开展广泛性的合作式版权许可等。

关键词：图书馆电子书版权许可版权

高质量发展视角下开放教育学习中心量化考核评价探析

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山东开放大学学报 2024年第2期 18-21页

作者：朱晓丽山东开放大学山东济南250014

近年来,国家对继续教育高质量发展提出了明确要求,开放教育作为学历继续教育的重要组成部分,高质量发展已成为自身发展的必然要求。为引领全国各分部开放教育高质量发展,国家开放大学开展对各分部的办学评估工作,并印发了分部办学评估... 详细信息

近年来,国家对继续教育高质量发展提出了明确要求,开放教育作为学历继续教育的重要组成部分,高质量发展已成为自身发展的必然要求。为引领全国各分部开放教育高质量发展,国家开放大学开展对各分部的办学评估工作,并印发了分部办学评估指标体系。学习中心是开放教育办学的神经末梢,分部的办学评估效果很大程度上取决于各学习中心对评估指标的落实力度,但经过研究,分部办学评估指标体系若直接用于对学习中心的办学考核评价具有不适应性、可操作性不强等问题。在相关研究分析的基础上,对开展学习中心量化考核工作的缘由、实施的原则、考核工作的特点及考核评价结果的应用,进行了较为深入的探讨和分析,结合试用情况给出了下一步工作的努力方向。

关键词：高质量开放教育量化考核评价