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Application of texture signatures based on multiparameter-magnetic resonance imaging for predicting microvascular invasion in hepatocellular carcinoma:Retrospective study

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World Journal of Gastrointestinal Oncology 2024年第4期16卷 1309-1318页

作者： Hai-yang nong Yong-Yi Cen Mi Qin Wen-Qi Qin You-Xiang Xie Lin Li Man-Rong Liu Ke Ding Department of Radiology The Third Affiliated Hospital of Guangxi Medical UniversityNanning 530031Guangxi Zhuang Autonomous RegionChina Department of Radiology The Affiliated Hospital of Youjiang Medical University for NationalitiesBaise 533000Guangxi Zhuang Autonomous RegionChina Department of Radiology The First Affiliated Hospital of Guangxi University of Traditional Chinese MedicineNanning 530031Guangxi Zhuang Autonomous RegionChina Department of Hepatobiliary Surgery The Third Affiliated Hospital of Guangxi Medical UniversityNanning 530031Guangxi Zhuang Autonomous RegionChina Department of Ultrasound The Third Affiliated Hospital of Guangxi Medical UniversityNanning 530031Guangxi Zhuang Autonomous RegionChina

BACKGROUND Despite continuous changes in treatment methods,the survival rate for advanced hepatocellular carcinoma(HCC)patients remains low,highlighting the importance of diagnostic methods for *** To explore the efficacy of texture analysis based on multi-parametric magnetic resonance(MR)imaging(MRI)in predicting microvascular invasion(MVI)in preoperative *** This study included 105 patients with pathologically confirmed HCC,categorized into MVI-positive and MVI-negative *** employed Original Data Analysis,Principal Component Analysis,Linear Discriminant Analysis(LDA),and Non-LDA(NDA)for texture analysis using multi-parametric MR images to predict preoperative *** effectiveness of texture analysis was determined using the B11 program of the MaZda4.6 software,with results expressed as the misjudgment rate(MCR).RESULTS Texture analysis using multi-parametric MRI,particularly the MI+PA+F dimensionality reduction method combined with NDA discrimination,demonstrated the most effective prediction of MVI in *** accuracy in the pulse and equilibrium phases was 83.81%.MCRs for the combination of T2-weighted imaging(T2WI),arterial phase,portal venous phase,and equilibrium phase were 22.86%,16.19%,20.95%,and 20.95%,*** area under the curve for predicting MVI positivity was 0.844,with a sensitivity of 77.19%and specificity of 91.67%.CONCLUSION Texture analysis of arterial phase images demonstrated superior predictive efficacy for MVI in HCC compared to T2WI,portal venous,and equilibrium *** study provides an objective,non-invasive method for preoperative prediction of MVI,offering a theoretical foundation for the selection of clinical therapy.

关键词： Magnetic resonance imaging Hepatocellular carcinoma Texture analysis Microvascular invasion

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基于联邦多任务学习的智慧教室隐私保护研究

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现代教育技术 2024年第9期34卷 123-132页

作者：杨雨浓徐澳张春炯谢涛重庆师范大学计算机信息科学学院重庆401331 亚洲大学AI收敛网络系韩国水原16499 西南大学教育学部重庆400715

在5G时代,随着联网设备的增多,智慧教室中的数据传输变得异常复杂,将联邦学习应用于智慧教室的隐私保护具有重要意义。尽管已有的联邦学习技术在平衡公平性和准确性方面取得了积极进展,但在解决智慧教室场景中的隐私保护问题方面还不够... 详细信息

在5G时代,随着联网设备的增多,智慧教室中的数据传输变得异常复杂,将联邦学习应用于智慧教室的隐私保护具有重要意义。尽管已有的联邦学习技术在平衡公平性和准确性方面取得了积极进展,但在解决智慧教室场景中的隐私保护问题方面还不够彻底。基于此,文章首先剖析了智慧教室中的多任务学习场景,建立了适用于智慧教室的多任务机器学习公平性模型。随后,文章提出了基于联邦学习框架的智慧教室隐私保护策略——联邦多任务机器学习框架。为了验证此框架的有效性,文章开展了计算机仿真实验,实验结果显示:联邦多任务机器学习框架不仅实现了多任务机器学习公平性和准确性的平衡,而且具有较强的隐私保护能力。文章的研究可为教育数据隐私保护提供重要参考,并有力推动教育数字化转型。

关键词：智慧教室联邦学习隐私保护多任务机器学习

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国产免疫检查点抑制剂与帕博利珠单抗治疗驱动基因阴性晚期非小细胞肺癌的疗效和安全性比较

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中华医学杂志 2024年第4期104卷 282-289页

作者：陈阳倩张聿达言欢秦浩越黄哲张星向思琦胡晓庆吴芳张永昌曾亮杨农南华大学衡阳医学院湖南省肿瘤医院研究生协作培养基地，衡阳421001 吉首大学医学院生物化学与免疫学系医学研究中心，吉首416000 中南大学湘雅公共卫生学院流行病与卫生统计系，长沙410078 中南大学基础医学院病理学教研室肿瘤免疫学实验室，长沙410017 湖南省肿瘤医院肺胃肠内科，长沙410013

目的探讨国产免疫检查点抑制剂(ICI)与帕博利珠单抗治疗驱动基因阴性晚期非小细胞肺癌的疗效和安全性差异。方法回顾性分析2017年1月1日至2022年10月1日间在湖南省肿瘤医院就诊的1241例驱动基因阴性不可手术的ⅢB~Ⅳ期非小细胞肺癌患者... 详细信息

目的探讨国产免疫检查点抑制剂(ICI)与帕博利珠单抗治疗驱动基因阴性晚期非小细胞肺癌的疗效和安全性差异。方法回顾性分析2017年1月1日至2022年10月1日间在湖南省肿瘤医院就诊的1241例驱动基因阴性不可手术的ⅢB~Ⅳ期非小细胞肺癌患者资料,所有患者均接受免疫单药或免疫联合化疗治疗,1241例患者中,男1066例,女175例;年龄14~84岁,中位年龄62岁。67例患者接受国产ICI单药治疗,695例患者接受国产ICI联合化疗治疗;102例患者接受帕博利珠单药治疗,377例患者接受帕博利珠单抗联合化疗治疗。比较国产ICI和帕博利珠单抗单药或联合化疗的疗效和安全性。结果在ICI单药组中,使用国产ICI和帕博利珠单抗的客观缓解率(ORR)分别为43.3%(29/67)和44.1%(45/102),疾病控制率(DCR)分别为79.1%(53/67)和84.3%(86/102),差异均无统计学意义(均P>0.05)。在免疫联合化疗组中,使用国产ICI和帕博利珠单抗的ORR分别为60.9%(423/695)和62.9%(237/377),DCR分别为92.9%(646/695)和91.0%(343/377),差异均无统计学意义(均P>0.05)。在ICI单药组中,使用国产ICI和帕博利珠单抗的中位无进展生存时间(PFS)分别为9.0(95%CI:3.0~15.0)个月和7.4(95%CI:4.8~9.8)个月,差异无统计学意义(P=0.660);中位总生存时间(OS)分别为27.0(95%CI:25.0~29.0)个月和22.0(95%CI:17.1~26.9)个月,差异无统计学意义(P=0.673)。在免疫联合化疗组中,使用国产ICI和帕博利珠单抗的中位PFS分别为9.0(95%CI:8.2~9.8)和10.5(95%CI:9.0~12.0)个月,差异无统计学意义(P=0.186);中位OS分别为24.0(95%CI:19.1~28.9)和26.0(95%CI:21.3~30.7)个月,差异均无统计学意义(P=0.359)。国产ICI组和帕博利珠单抗组1~2级反应性皮肤毛细血管增生症的发生率分别为14.0%(107/762)和0,≥3级反应性皮肤毛细血管增生症的发生率分别为1.0%(7/762)和0,差异均有统计学意义(均P0.05)。结论国产ICI与帕博利珠单抗治疗驱动基因阴性晚期非小细胞肺癌的疗效相近;除国产ICI可能会出现特异性的毛细血管增生症外,其他不良反应发生率差异不大。

关键词：癌,非小细胞肺免疫检查点抑制剂帕博利珠单抗国产药治疗效果回顾性队列研究

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Intracranial activity of first-line immune checkpoint inhibitors combined with chemotherapy in advanced non-small cell lung cancer

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Chinese Medical Journal 2023年第12期136卷 1422-1429页

作者： Zhe Huang Fang Wu Qinqin Xu Lianxi Song Xiangyu Zhang Zhan Wang Li Deng Yongchang Zhang Liang Zeng nong yang Department of Medical Oncology Lung Cancer and Gastrointestinal UnitHunan Cancer Hospital/The Affiliated Cancer Hospital of Xiangya School of MedicineCentral South UniversityChangshaHunan 410013China Department of Pathology Immuno-Oncology LaboratorySchool of Basic MedicineCentral South UniversityChangshaHunan 410013China Department of Medical Oncology Qinghai Provincial People’s HospitalXiningQinghai 810000China Department of Medical Oncology Graduate Collaborative Training Base of Hunan Cancer HospitalHengyang Medical SchoolUniversity of South ChinaHengyangHunan 421001China

Background:Immune checkpoint inhibitors(ICIs)are increasingly used as first-line therapy for patients with advanced non-small cell lung cancer(NSCLC)harboring no actionable mutations;however,data on their efficacy among patients presenting with intracranial lesions are *** study aimed to explore the efficacy and safety of ICIs combined with chemotherapy in advanced NSCLC patients with measurable brain metastasis at initial ***:Our study retrospectively analyzed clinical data of a total of 211 patients diagnosed with driver gene mutation-negative advanced NSCLC with measurable,asymptomatic brain metastasis at baseline from Hunan Cancer Hospital between January 1,2019 and September 30,*** patients were stratified into two groups according to the first-line treatment regimen received:ICI combined with chemotherapy(n=102)or chemotherapy(n=109).Systemic and intracranial objective response rates(ORRs)and progression-free survival(PFS)were *** events were also compared between the ***:Compared with the chemotherapy-based regimen,the ICI-containing regimen was associated with a significantly higher intracranial(44.1%[45/102]vs.28.4%[31/109],χ^(2)=5.620,P=0.013)and systemic(49.0%[50/102]vs.33.9%[37/109],χ^(2)=4.942,P=0.019)ORRs and longer intracranial(11.0 months vs.7.0 months,P<0.001)and systemic(9.0 months vs.5.0 months,P<0.001)*** analysis consistently revealed an independent association between receiving ICI plus platinum-based chemotherapy as a first-line regimen and prolonged intracranial PFS(hazard ratio[HR]=0.52,95%confidence interval[CI]:0.37-0.73,P<0.001)and systemic PFS(HR=0.48,95%CI:0.35-0.66,P<0.001).No unexpected serious adverse effects were ***:Our study provides real-world clinical evidence that ICI combined with chemotherapy is a promising first-line treatment option for driver gene mutation-negative advanced NSCLC patients who present with brain metastasis at initial diagnosis

关键词： Brain metastasis Immune checkpoint inhibitor Non-small cell lung cancer Objective response rates Progression-free survival

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Designing a novel consensus protocol for multiagent systems with general dynamics under directed networks

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Frontiers of Information Technology & Electronic Engineering 2017年第8期18卷 1071-1081页

作者： Hao-liang LI Ren-nong yang Qiu-ni LI Aeronautics and Astronautics Engineering College Air Force Engineering University Xi'an 710038 China

The consensus problem for general linear multi-agent systems （MASs） under directed topology is investigated. First, a novel consensus protocol based on proportional-integral-derivative （PID） control is proposed. Second, the consensus problem is converted into an asymptotic stability problem through transformations. Third, through a state projection method the consensus condition is proved and the explicit expression of the consensus function is given. Then, a Lyapunov function is constructed and the gain matrices of the protocol are given based on the linear matrix inequality. Finally, two experiments are conducted to explain the advantages of the method. Simulation results show the effectiveness of the proposed algorithm.

关键词： Multi-agent Consensus PID control Linear matrix inequality

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Mechanical responses of anchoring structure under triaxial cyclic loading

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Journal of Rock Mechanics and Geotechnical Engineering 2024年第2期16卷 545-560页

作者： Peng Wang nong Zhang Qun Wei Xingliang Xu Guangzhen Cui Aoran Li Sen yang Jiaguang Kan State Key Laboratory of Coal Resources and Safe Mining School of MinesChina University of Mining and TechnologyXuzhou221116China School of Civil Engineering Xuzhou University of TechnologyXuzhou221116China School of Mechanical Engineering Jiangsu University of TechnologyChangzhou213001China

Dynamic load on anchoring structures(AS)within deep roadways can result in cumulative damage and *** study develops an experimental device designed to test AS under triaxial *** device enables the investigation of the mechanical response,failure mode,instability assessment criteria,and anchorage effect of AS subjected to combined cyclic dynamic-static triaxial stress *** results show that the peak bearing strength is positively correlated with the anchoring matrix strength,anchorage length,and edgewise compressive *** bearing capacity decreases significantly when the anchorage direction is severely *** free face failure modes are typically transverse cracking,concave fracturing,V-shaped slipping and detachment,and spallation ***,when the anchoring matrix strength and the anchorage length decrease while the edgewise compressive strength,loading rate,and anchorage inclination angle increase,the failure intensity *** is determined by a negative tangent modulus of the displacement-strength curve or the continued deformation increase against the general downward *** cyclic loads,the driving force that breaks the rock mass along the normal vector and the rigidity of the AS are the two factors that determine roadway ***,a control measure for surrounding rock stability is proposed to reduce the internal driving force via a pressure relief method and improve the rigidity of the AS by full-length anchorage and grouting modification.

关键词： Triaxial stress Dynamic-static combination load Cyclic loading Anchoring structure(AS) Cumulative damage

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Active Faulting Pattern,Present-day Tectonic Stress Field and Block Kinematics in the East Tibetan Plateau

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Acta Geologica Sinica(English Edition) 2009年第4期83卷 694-712页

作者： ZHANG Yueqiao DONG Shuwen yang nong Key Laboratory of Neotectonic Movement and Geohazard Ministry of Land and Resources Beijing 100081 China Institute of Geomechanics Chinese Academy of Geological Sciences Beijing 100081 China Chinese Academy of Geological Sciences Beijing 100037 China

This paper examines major active faults and the present-day tectonic stress field in the East Tibetan Plateau by integrating available data from published literature and proposes a block kinematics model of the region. It shows that the East Tibetan Plateau is dominated by strike-slip and reverse faulting stress regimes and that the maximum horizontal stress is roughly consistent with the contemporary velocity field, except for the west Qinling range where it parallels the striking of the major strike-slip faults. Active tectonics in the East Tibetan Plateau is characterized by three faulting systems. The left-slip Kunlun-Qinling faulting system combines the east Kunlun fault zone, sinistral oblique reverse faults along the Minshan range and two major NEE-striking faults cutting the west Qinling range, which accommodates eastward motion, at 10--14 mm/a, of the Chuan-Qing block. The left-slip Xianshuihe faulting system accommodated clockwise rotation of the Chuan-Dian block. The Longmenshan thrust faulting system forms the eastern margin of the East Tibetan Plateau and has been propagated to the SW of the Sichuan basin. Crustal shortening across the Longmenshan range seems low （2-4 mm/a） and absorbed only a small part of the eastward motion of the Chuan-Qing block. Most of this eastward motion has been transmitted to South China, which is moving SEE-ward at 7-9 mm/a. It is suggested from geophysical data interpretation that the crust and lithosphere of the East Tibetan Plateau is considerably thickened and theologically layered. The upper crust seems to be decoupled from the lower crust through a decollement zone at a depth of 15-20 kin, which involved the Longmenshan fault belt and propagated eastward to the SW of the Sichuan basin. The Wenchuan earthquake was just formed at the bifurcated point of this decollement system. A rheological boundary should exist beneath the Longmenshan fault belt where the lower crust of the East Tibetan Plateau and the lithospheric man

关键词： Longmenshan fault belt active faulting pattern active tectonic stress field extrusion tectonics Wenchuan earthquake East Tibetan Plateau

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Global outreach and networking promotion to accelerate tropical diseases elimination

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贫困所致传染病(英文) 2024年第3期13卷 1-5页

作者： Lv Shan Zhou Xiao-nong National Institute of Parasitic Diseases at Chinese Center for Disease Control and Prevention (Chinese Center for Tropical Diseases Research) NHC Key Laboratory of Parasite and Vector Biology WHO Collaborating Centre for Tropical Diseases Shanghai People’s Republic of China School of Global Health Chinese Center for Tropical Diseases Research Shanghai Jiao Tong University School of Medicine Shanghai People’s Republic of China Institute of One Health Shanghai Jiao Tong University Shanghai People’s Republic of China Hainan Center for Tropical Diseases Research (Hainan Subcenter of Chinese Center for Tropical Diseases Research) Haikou People’s Republic of China

Cooperation and networking are powerful tools in the combating against tropical diseases. Cooperation on a global scale is essential due to the transboundary nature of tropical diseases. Networking plays a pivotal role in facilitating such cooperation. Both cooperation and networking can foster innovation in disease control programmes. Collaborative research can lead to the development of new drugs and vaccines, while shared surveillance data can enable the early detection and control of disease epidemics. Therefore, consensus of cooperation and networking has been reached during the 7th Symposium on Surveillance-Response Systems Leading to Tropical Diseases Elimination, which reflected in the two documents, i.e.,Consensus for Transboundary Tropical Diseases Control, andAction Consensus of the Network of WHO Collaborating Centres Related to NTDs. These documents will improve the efforts in the fighting against tropical diseases through collective actions to achieve the United Nations’ Sustainable Development Goals (SDGs).

关键词： Tropical diseases Cooperation Networking Elimination Sustainable development goals

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Research on Bast Fiber Extracted from the White Bark of Three Species in the Genus Broussonetia

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Chinese Journal of Polymer Science 2024年第6期42卷 729-738页

作者： Shan-Shan Jin Si-nong Wang Yan-Yan Huang Jing-Yu Zhang Peng Liu Hui Yu Hong-Dong Zhang Yu-Liang yang Institute for Preservation and Conservation of Chinese Ancient Books Fudan University LibraryFudan UniversityShanghai200433China State key laboratory of Molecular Engineering of polymers Department of Macromolecular ScienceFudan UniversityShanghai200433China

Against the backdrop of a global paper resource shortage,there is a growing need to identify fast-growing tree species capable of producing long-lasting *** plant species namely Broussonetia kazinoki,Broussonetia papyrifera and hybrid paper mulberry,belong to the Broussonetia genus,were collected from China to study their white bark suitability for pulp and *** chemical composition revealed that the holocellulose content in Broussonetia kazinoki and Broussonetia papyrifera was more than 80%.The molecular weight distribution of several holocellulose/α-cellulose is observed by GPC,which allows us to better observe the changes of various components on the molecular *** yield,lignin,whiteness,and molecular weight of the pulps obtained by NaOH treatment were *** microscope was used to characterize the fiber length-width ratio and ***,the improvement of the fiber rigidity method based on the Kratky-Porod chain model makes it more theoretical and further reveals the influencing factors of fiber *** study demonstrates the high potentiality of these three species for papermaking applications.

关键词： Broussonetia genus Cellulose Alkaline pulping Kratky-Porod chain model Fiber rigidity

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Envonalkib versus crizotinib for treatment-naive ALK-positive non-small cell lung cancer: a randomized, multicenter, open-label, phase III trial

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Signal Transduction and Targeted Therapy 2023年第9期8卷 4338-4345页

作者： Yunpeng yang Jie Min nong yang Qitao Yu Ying Cheng Yanqiu Zhao Manxiang Li Hong Chen Shou’an Ren Jianying Zhou Wu Zhuang Xintian Qin Lejie Cao Yan Yu Jian Zhang Jianxing He Jifeng Feng Hao Yu Li Zhang Wenfeng Fang Department of Medical Oncology Sun Yat-sen University Cancer CenterState Key Laboratory of Oncology in South ChinaCollaborative Innovation Center for Cancer MedicineGuangzhou 510060China Department of Oncology The Second Affiliated Hospital of Air Force Medical UniversityXi’an 710038China Department of Medical Oncology Lung Cancer and Gastrointestinal UnitHunan Cancer Hospital/The Affiliated Cancer Hospital of Xiangya School of MedicineCentral South UniversityChangsha 410013China Department of Medical Oncology of Respiratory Affiliated Tumor Hospital of Guangxi Medical UniversityGuangxiNanning 530021China Department of Thoracic Medical Oncology Jilin Provincial Cancer HospitalChangchun 130012China Department of Medical Oncology The Affiliated Cancer Hospital of Zhengzhou UniversityZhengzhou 450003China Department of Respiratory First Affiliated Hospital of Xian Jiaotong UniversityXi’an 710061China Department of Respiratory and Critical Care Medicine The First Affiliated Hospital of Chongqing Medical UniversityChongqing 400050China Department of Respiratory The First Hospital of Shanxi Medical UniversityTaiyuan 030001China Department of Respiratory Disease The First Affiliated HospitalZhejiang University School of MedicineHangzhou 310003China Department of Medical Oncology Fujian Cancer HospitalFuzhou 350014China The First Department of Oncology The First Affiliated Hospital of Guangdong Pharmaceutical UniversityGuangzhou 510699China Department of Respiratory and Critical Care Medicine Anhui Provincial HospitalHefei 230000China Department of Respiratory Medicine Affiliated Cancer Hospital of Harbin Medical UniversityHarbin 150000China Department of Respiratory Medicine The First Affiliated Hospital of Air Force Medical UniversityXi’an 710032China Department of Cardiothoracic Surgery The First Affiliated Hospital of Guangzhou Medical CollegeGuangzhou Research Institute of Respiratory Disease and China State Key Laboratory of Respiratory DiseaseGuangzhou 510120China Department

Anaplastic lymphoma kinase(ALK)rearrangements are present in about 5–6%of non-small cell lung cancer(NSCLC)cases and associated with increased risks of central nervous system(CNS)***,a novel ALK inhibitor,demonstrated promising anti-tumor activity and safety in advanced ALK-positive NSCLC in the first-in-human phase I *** phase III trial(*** NCT04009317)investigated the efficacy and safety of first-line envonalkib in advanced ALK-positive NSCLC *** 264 participants were randomized 1:1 to receive envonalkib(n=131)or crizotinib(n=133).Median independent review committee(IRC)-assessed progression-free survival(PFS)times were 24.87(95%confidence interval[CI]:15.64–30.36)and 11.60(95%CI:8.28–13.73)months in the envonalkib and crizotinib groups,respectively(hazard ratio[HR]=0.47,95%CI:0.34–0.64,p<0.0001).IRC-assessed confirmed objective response rate(ORR)was higher(81.68%vs.70.68%,p=0.056)and duration of response was longer(median,25.79[95%CI,16.53–29.47]vs.11.14[95%CI,9.23–16.59]months,p=0.0003)in the envonalkib group compared with the crizotinib *** participants with baseline brain target lesions,IRC-assessed CNS-ORR was improved with envonalkib compared with crizotinib(78.95%vs.23.81%).Overall survival(OS)data were immature,and median OS was not reached in either group(HR=0.84,95%CI:0.48–1.47,p=0.5741).The 12-month OS rates were 90.6%(95%CI,84.0%–94.5%)and 89.4%(95%CI,82.8%–93.6%)in the envonalkib and crizotinib groups,***≥3 treatment-related adverse events were observed in 55.73%and 42.86%of participants in the envonalkib and crizotinib groups,*** significantly improved PFS and delayed brain metastasis progression in advanced ALK-positive NSCLC.

关键词： crizotinib randomized cancer

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