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Mold breakout prediction based on computer vision and machine learning

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Journal of Iron and Steel Research International 2024年第8期31卷 1947-1959页

作者： Yan-yu Wang Qi-can Wang Yong-chang Zhang Yong-hui Cheng man Yao Xu-dong Wang School of Materials Science and Engineering Dalian University of TechnologyDalian 116024LiaoningChina Key Laboratory of Solidification Control and Digital Prepar.tion Technology Dalian University of TechnologyDalian 116024LiaoningChina

Breakout is the most serious production accident in continuous casting and must be detected and predicted by stable and reliable *** sticking region,which forms on the local copper plate and expanded into a"V"shape,is the typical precursor of ***,computer vision technology was exploited to visualize the temperature change rate of the copper plate based on the temperature signals from thermocouples;then,the static and dynamic features of the abnormal sticking region were ***,logistic regression and Adaboost models were used to study and identify these features,resulting in the development of a mold breakout prediction model based on computer vision and machine *** test results demonstrate that the proposed model can effectively distinguish anomalous temperature patterns and considerably reduce false alarms without any missing *** a result,the proposed method could offer valuable insights into the realm of abnormality detection and prediction during continuous casting process.

关键词： Abnormality detection Image processing Adaboost Logistic regression Continuous casting

Prognostic significance of grade of malignancy based on histopathological differentiation and Ki-67 in pancreatic ductal adenocarcinoma

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Cancer Biology & Medicine 2024年第5期21卷 416-432页

作者： Yuexiang Liang Guannan Sheng Yu Guo Yiping Zou Hanhan Guo Zhifei Li Shaofei chang Quan man Song Gao Jihui Hao Depar.ment of Pancreatic Cancer Tianjin Medical University Cancer Institute&HospitalNational Clinical Research Center for CancerKey Laboratory of Cancer Prevention and TherapyTianjinTianjin’s Clinical Research Center for CancerTianjin 300060China Depar.ment of Gastrointestinal Oncology The First Affiliated Hospital of Hainan Medical UniversityHaikou 570102China Depar.ment of Gastrointestinal Pancreatic Surgery Shanxi Provincial People’s HospitalTaiyuan 030012China

Objective:Tumor cell malignancy is indicated by histopathological differentiation and cell ***-67,an indicator of cellular proliferation,has been used for tumor grading and classification in breast cancer and neuroendocrine ***,its prognostic significance in pancreatic ductal adenocarcinoma(PDAC)remains ***:Patients who underwent radical pancreatectomy for PDAC were retrospectively enrolled,and relevant prognostic factors were *** of malignancy(GOM),a novel index based on histopathological differentiation and Ki-67,is proposed,and its clinical significance was ***:The optimal threshold for Ki-67 was determined to be 30%.Patients with a Ki-67 expression level>30%rather than≤30%had significantly shorter 5-year overall survival(OS)and recurrence-free survival(RFS).In multivariate analysis,both histopathological differentiation and Ki-67 were identified as independent prognostic factors for OS and *** GOM was used to independently stratify OS and RFS into 3 tiers,regardless of TNM stage and other established prognostic *** tumor-nodemetastasis-GOM stage was used to stratify survival into 5 distinct tiers,and surpassed the predictive performance of TNM stage for OS and ***:Ki-67 is a valuable prognostic indicator for *** of the GOM in the TNM staging system may potentially enhance prognostic accuracy for PDAC.

关键词： Pancreatic ductal adenocarcinoma prognosis Ki-67 differentiation TNM stage

ZnO/ZnS heterostructure in N-doped porous carbon for anchoring-diffusion-conversion of polysulfides for high-performance lithium-sulfur batteries

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Rare Metals 2024年第8期43卷 3661-3676页

作者： Fei Wang Rong-Wei Huang Wen-chang Han Chun-man Yang Wen-Hao Yang Peng Dong Chao-Ling Wu Yi-Yong Zhang Xue Li Ying-Jie Zhang National Local Joint Engineering Research Center for LithiumIon Batteries and Materials Prepar.tion Technology Key Laboratory of Advanced Batteries Materials of Yunnan ProvinceFaculty of Metallurgical and Energy EngineeringKunming University of Science and TechnologyKunming 650093China Engineering Research Center of Alternative Energy Materials and Devices Sichuan UniversityMinistry of EducationChengdu 610065China

The shuttle effect of polysulfides is one of the key factors hindering the commercialization of lithiumsulfur batteries(LSBs).Owing to their high conductivity and advantageous structure,heterostructures can be used in sulfur fixation and catalysis of *** this study,a flower-shaped ZnO/ZnS heterostructure on a nitrogendoped porous carbon(NPC) sulfur host was *** ZnO/ZnS heterostructure regulates the electronic structure of the material and exhibits higher metal-like ***,the ZnO/ZnS heterostructure combines the strong adsorption property of ZnO and the high catalytic ability of ZnS to realize the anchoring-diffusionconversion of lithium poly sulfides(LiPSs).Results reveal that the developed ZnO/ZnS@NPC/S cathode has excellent electrochemical performance in LSBs,achieving a high discharge specific capacity of 1365.3 mAh·g^(-1) at 0.1C and excellent rate capability(719 mAh·g^(-1) at 2C;the capacity decay rate is only 0.042% per cycle after 1000 cycles).Even under a high sulfur loading-E/S(electrolyte/sulfur)ratio of 5.1 mg·cm^(-2)-6 μl·mg^(-1),a high specific capacity of 723.7 mAh·g^(-1) is maintained after 60 *** study provides a new strategy for a multifunctional sulfur host that can effectively alleviate the shuttle effect of LiPSs and improve the utilization of sulfur active substances.

关键词： ZnO/ZnS heterostructure Lithium-sulfur batteries Density functional theory Anchor Conversion

Biological perspectives in geotechnics:Application and monitoring

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Journal of Rock Mechanics and Geotechnical Engineering 2024年第7期16卷 2854-2878页

作者： par.ha Narayan Mishra Surabhi Jain Thierry Bore Ilhan chang Yeong-man Kwon Yijie Wang Hirak Ranjan Dash Ashutosh Kumar Satyam Tiwari Ningjun Jiang Sarat Kumar Das Alexander Scheuermann Depar.ment of Civil Engineering Indian Institute of Technology KanpurKanpur208016India School of Civil Engineering University of QueenslandSt LuciaQLD4072Australia Depar.ment of Civil Engineering Indian Institute of Technology DhanbadDhanbad826004India Depar.ment of Civil System Engineering Ajou UniversitySuwon-si16499Republic of Korea School of Engineering and IT University of New South WalesCanberraACT2600Australia Depar.ment of Civil and Environmental Engineering Northwestern UniversityEvanstonIL60208USA Depar.ment of Civil and Environmental Engineering The Hong Kong Polytechnic UniversityHong KongChina National Forensic Sciences University New Delhi110085India Southeast University Nanjing211189China

This paper builds on exploring the applications of biomediated pathways to solve geotechnical ***,the state of the art of biological remediation strategies including microbial remediation and phytoremediation have been introduced and critically reviewed in the context of decontaminating the ***,biopolymerisation,biomineralisation and bioneutralisation processes have been depicted with a special emphasis on the applications including but not limited to soil stabilisation,soil erosion prevention,anti-desertification and pH *** of these methods have their own limitations and bottlenecks while scaling up,and these challenges have been summarised and some possible paths to overcome the challenges have also been *** state of the art of electromagnetic(EM)monitoring methods to capture the effects of biomediation on spatio-temporal soil properties are then highlighted as a non-invasive and rapid pathway to track the progress of biomediated soil ***,each of the technologies discussed have been evaluated for their maturity level using the principles of technology readiness level(TRL).A majority of the technologies amounting to around 77%are still in the TRL 4e7,*** the valley of *** is thus evident that development of these technologies needs to be supported with appropriate funding for improving their maturity to a level of industrial deployment.

关键词： Biogeotechnics Bioremediation Phytoremediation Biopolymers Biomineralisation Electromagnetic(EM)methods technology readiness level(TRL)

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供应链数字化能否提高企业全要素生产率?

财经问题研究 2024年第5期 75-88页

作者：李长英王曼山东大学经济学院山东济南250100

本文将供应链创新与应用试点工作视为企业供应链数字化建设的准自然实验,基于2012—2022年中国沪深A股上市公司数据,采用双重差分倾向得分匹配法(PSM-DID)实证检验供应链数字化对企业全要素生产率的影响及作用机制。研究结果显示:供应... 详细信息

本文将供应链创新与应用试点工作视为企业供应链数字化建设的准自然实验,基于2012—2022年中国沪深A股上市公司数据,采用双重差分倾向得分匹配法(PSM-DID)实证检验供应链数字化对企业全要素生产率的影响及作用机制。研究结果显示:供应链数字化能提高企业全要素生产率;供应链数字化对国有企业、低供应链集中度企业、产业链上游企业和营商环境优势区企业全要素生产率的促进作用更显著;供应链数字化通过增强企业创新能力、提升供应链效率和降低企业交易成本提高企业全要素生产率。本文不仅有助于厘清供应链数字化对企业全要素生产率的作用机制,而且为企业通过供应链数字化转型实现高质量发展提供了经验证据。

关键词：供应链数字化全要素生产率创新能力供应链效率交易成本

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Microbial communities and their influencing factors in the sediment of upper and mid-lower reaches of the Yellow River

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Journal of Earth Science 2024年

作者： Yanmin Zhang Zewei Gui Xiaofei Gao Jingxiao Zhang Yunni Gao man Zhang Guokun Yang Xindang Zhang Xulu chang Zixuan Gan Xiaolin Meng Xuejun Li Hongchen Jiang College of Fisheries， Henan Normal University State Key Laboratory of Biogeology and Environmental Geology， China University of Geosciences Wuhan College of Agricultural and Environmental Sciences， University of California Davis

Sedimentary microbial communities play an important role in driving biogeochemical cycles in river ecosystems. However， limited is known about the microbial variation and its influencing factors in the high-turbid Yellow River. In this study， microbial communities and their influencing factors in the sediment of upper and mid-lower reaches of the Yellow River were examined. The results showed that Gammaproteobacteria were most dominant in Yellow River sediments. Deltaproteobacteria， Nitrospirae and family of Bacillaceae， Geobaceraceae were more abundant in the mid-lower reaches， while Gammaproteobacteria， Verrucomicrobia and family of Caldilineaceae， Llumatobacteraceae were more abundant in the upper reaches. The microbial communities were predominantly affected by nutrient factors (NH4+， TN and TP)， followed by the spatial factors and Chla content in the mid-lower reaches， while they were by predominantly affected by spatial factors， followed by the nutrient factors and Chla content in the upper reaches. The dominant microbial taxa were mostly correlated with COD， NH4+， TP and temperature. In summary， the sedimentary microbial communities differ between the upper and mid-lower reaches and respond differently to the environmental and spatial factors in the sediment of the Yellow River.

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Host-induced silencing of Mppar. confers Myzus persicae resistance in transgenic rape plants

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Journal of Integrative Agriculture 2024年第1期23卷 187-194页

作者： Qi Zhang Wenqin Zhan Chao Li Ling chang Yi Dong Jiang Zhang State Key Laboratory of Biocatalysis and Enzyme Engineering School of Life SciencesHubei UniversityWuhan 430062China Oil Crops Research Institute Chinese Academy of Agricultural SciencesWuhan 430062China Agricultural Genomics Institute at Shenzhen Chinese Academy of Agricultural SciencesShenzhen 518000China

Plant-mediated RNA interference(RNAi)has emerged as a promising technology for insect *** green peach aphid,Myzus persicae,feeds on over 400 species of host *** napus(rape)is the second most important oilseed crop *** persicae is highly reproductive and causes severe damage to the rape plants due to its quite flexible life *** this study,we tested the RNAi effects of transgenic rape plants on *** in vitro feeding *** with artificial diets containing double-stranded RNAs(dsRNAs)targeting seven aphid genes,we identified a new gene encoding the par.itioning-defective protein 6(par.)as the most potent RNAi ***-and stage-expression analysis of par. suggested this gene is highly expressed in the embryo and adult stage of *** next generated transgenic rape plants expressing ds par. by Agrobacteriummediated transformation and obtained nine independent transgenic *** to wild-type control plants,transgenic rape lines expressing ds par. showed strong resistance to *** assays revealed that feeding transgenic rape plants to *** significantly decreased Mppar. expression and survival rate and impaired ***,we showed that the resistance levels to *** are positively correlated with ds par. expression levels in transgenic rape *** study demonstrates that transgenic rape plants expressing ds par. are efficiently protected from *** with the genes involved in embryo development could be the effective RNAi targets for controlling aphids and potentially other insect pests.

关键词： oilseed rape pest control aphid double-stranded RNA RNA interference

Endoscopic ultrasound-guided tissue sampling induced pancreatic duct leak resolved by the placement of a pancreatic stent:A case report

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World Journal of Clinical Cases 2024年第9期12卷 1677-1684页

作者： Ki-Hyun Kim chang Hwan par. Eunae Cho Yohan Lee Depar.ment of Internal Medicine Chonnam National University HospitalGwangju 61469South Korea Depar.ment of Gastroenterology Chonnam National University HospitalGwangju 61469South Korea

BACKGROUND Pancreatic ductal leaks complicated by endoscopic ultrasonography-guided tissue sampling(EUS-TS)can manifest as acute *** SUMMARY A 63-year-old man presented with persistent abdominal pain and weight ***:Laboratory findings revealed elevated carbohydrate antigen 19-9(5920 U/mL)and carcinoembryonic antigen(23.7 ng/mL)*** resonance imaging of the pancreas revealed an approximately 3 cm ill-defined space-occupying lesion in the inferior aspect of the head,with severe encasement of the superior mesenteric *** ductal adenocarcinoma was confirmed after pathological examination of specimens obtained by EUS-TS using the fanning *** and outcomes:The following day,the patient experienced severe abdominal pain with high amylase(265 U/L)and lipase(1173 U/L)*** tomography of the abdomen revealed edematous wall thickening of the second portion of the duodenum with adjacent fluid collections and a suspicious leak from either the distal common bile duct or the main pancreatic duct in the *** retrograde cholangiopancreatography revealed dye leakage in the head of the main pancreatic ***,a 5F 7 cm linear plastic stent was deployed into the pancreatic duct to divert the pancreatic *** patient’s abdominal pain improved immediately after pancreatic stent insertion,and amylase and lipase levels normalized within a *** chemotherapy was then *** Using the fanning method in EUS-TS can inadvertently cause damage to the pancreatic duct and may lead to clinically significant *** a pancreatic stent may immediately resolve acute pancreatitis and shorten the waiting time for curative *** using the fanning method during EUSTS,ductal structures should be excluded to prevent pancreatic ductal leakage.

关键词： Endoscopic ultrasound-guided tissue sampling Pancreatitis Pancreatic duct leak Pancreatic stent Case report

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血细胞减少伴多发畸形2例

中国当代儿科杂志 2024年第4期26卷 410-413页

作者：常丽贤张丽高怡曼竺晓凡中国医学科学院血液病医院(中国医学科学院血液学研究所)/实验血液学国家重点实验室/国家血液系统疾病临床医学研究中心/细胞生态海河实验室天津300020 天津医学健康研究院天津301600

患儿1,女,10岁,因全血细胞减少伴反复鼻衄就诊,有反复上呼吸道感染史,有皮肤咖啡斑、小头畸形,基因检测发现DNA连接酶IV(ligase IV,LIG4)基因存在复合杂合变异,诊断为LIG4综合征。患儿2,女,6岁,因血小板减少2年余就诊,有身材矮小、皮肤... 详细信息

患儿1,女,10岁,因全血细胞减少伴反复鼻衄就诊,有反复上呼吸道感染史,有皮肤咖啡斑、小头畸形,基因检测发现DNA连接酶IV(ligase IV,LIG4)基因存在复合杂合变异,诊断为LIG4综合征。患儿2,女,6岁,因血小板减少2年余就诊,有身材矮小、皮肤黝黑、手部畸形等,染色体断裂试验检查结果为阳性,诊断为范可尼贫血互补组A型。该2例患儿临床表现相似,最终诊断为两类疾病,提示血细胞减少伴畸形的患儿并非仅是血液病,需警惕免疫系统等其他疾病。

关键词：血细胞减少畸形范可尼贫血 LIG4综合征儿童