期刊文献+
共找到1,219篇文章
< 1 2 61 >
每页显示 20 50 100
Management of recurrent rectal cancer:A population based study in greater Amsterdam 被引量:19
1
作者 Roel Bakx Otto Visser +3 位作者 Judith Josso Sybren Meijer J Frederik M Slors J Jan B van Lanschot 《World Journal of Gastroenterology》 SCIE CAS CSCD 2008年第39期6018-6023,共6页
AIM: To analyze, retrospectively in a populationbased study, the management and survival of patients with recurrent rectal cancer initially treated with a macroscopically radical resection obtained with total mesorec... AIM: To analyze, retrospectively in a populationbased study, the management and survival of patients with recurrent rectal cancer initially treated with a macroscopically radical resection obtained with total mesorectal excision (TME). METHODS: All rectal carcinomas diagnosed during 1998 to 2000 and initially treated with a macroscopically radical resection (632 patients) were selected from the Amsterdam Cancer Registry. For patients with recurrent disease, information on treatment of the recurrence was collected from the medical records. RESULTS: Local recurrence with or without clinically apparent distant dissemination occurred in 62 patients (10%). Thirty-two patients had an isolated local recurrence. Ten of these 32 patients (31%) underwent radical re-resection and experienced the highest survival (three quarters survived for at least 3 years). Eight patients (25%) underwent non-radical surgery (median survival 24 rno), seven patients (22%) were treated with radio- and/or chemotherapy without surgery (median survival 15 mo) and seven patients (22%) only received best supportive care (median survival 5 too). Distant dissemination occurred in 124 patients (20%) of whom 30 patients also had a local recurrence. The majority (54%) of these patients were treated with radio- and/or chemotherapy without surgery (median survival 15 mo). Twenty-seven percent of these patients only received best supportive care (median survival 6 mo), while 16% underwent surgery for their recurrence. Survival was best in the latter group (median survival 32 mo). CONCLUSION: Although treatment options and survival are limited in case of recurrent rectal cancer after radical local resection obtained with TME, patients can benefit from additional treatment, especially if a radical resection is feasible. 展开更多
关键词 Rectal cancer Total mesorectal excision Local recurrence Relative survival
暂未订购
管理学研究中的可持续发展目标:20年回顾与分析
2
作者 徐淑英 法尔赞•布鲁曼德 +1 位作者 阿恩•范•维特洛斯特伊恩 威尔弗雷德•迈恩哈特 《经济管理学刊》 2025年第3期1-14,共14页
本文评估了在过去20年间(2005-2024),管理学研究如何响应联合国可持续发展目标(Sustainable Development Goals,简称SDGs)。具体而言,本文比较了涵盖会计、金融、管理、市场营销与运营管理五大学科的18本国际顶尖商学与管理学期刊,以及... 本文评估了在过去20年间(2005-2024),管理学研究如何响应联合国可持续发展目标(Sustainable Development Goals,简称SDGs)。具体而言,本文比较了涵盖会计、金融、管理、市场营销与运营管理五大学科的18本国际顶尖商学与管理学期刊,以及专注于中国管理研究的Management and Organization Review(MOR)在SDGs关注度上的差异。本文采用三种人工智能工具扫描论文摘要,并评估其与17项SDGs的契合度。结果显示,自2015年SDGs提出以来的10年间,其相关研究显著多于此前10年,增长最为显著的领域集中在SDG08(体面工作与经济增长)、SDG09(产业、创新与基础设施)以及SDG16(和平、正义与健全制度)。在所分析的期刊中,MOR在SDGs相关研究方面表现突出,凸显了其在负责任研究(Responsible Research)方面的学术引领重要作用。基于负责任研究的理念,本文进一步探讨了在学术研究中关注全体利益相关者(而非仅限股东)福祉的重要性。 展开更多
关键词 可持续发展目标 责任研究 利益相关者福祉
在线阅读 下载PDF
学校人际关系与血清素系统多基因累积遗传风险对青少年抑郁的影响 被引量:3
3
作者 曾子豪 胡义秋 +5 位作者 刘双金 彭丽仪 杨琴 王宏才 何震 姚星星 《心理发展与教育》 北大核心 2025年第3期436-447,共12页
基于抑郁的人际关系理论与进化模型,采用问卷法和DNA分型技术,对525名青少年进行为期两年的追踪调查,选取关键变量学校人际关系,挫败感和血清素系统多基因构建一个有调节的中介模型,考察遗传与环境的交互作用对抑郁的影响。结果显示:(1... 基于抑郁的人际关系理论与进化模型,采用问卷法和DNA分型技术,对525名青少年进行为期两年的追踪调查,选取关键变量学校人际关系,挫败感和血清素系统多基因构建一个有调节的中介模型,考察遗传与环境的交互作用对抑郁的影响。结果显示:(1)学校人际关系可以显著预测青少年抑郁;(2)挫败感在学校人际关系对青少年抑郁影响中起中介作用;(3)多基因风险评分(Polygenic Risk Score,PRS)调节同伴关系和挫败感对青少年抑郁的影响,具体表现为,随着PRS得分的增加,挫败感对青少年的影响增强,斜率增加,有着更高的抑郁风险;同伴关系对抑郁的影响表现出类似情况,斜率绝对值增加,负向预测加强,即抑郁得分更低,支持差别易感性模型;(4)敏感性分析结果显示,TPH2基因rs4570625多态性G等位基因是青少年抑郁的重要候选基因,且相比单基因研究,多基因与环境的交互作用对抑郁的解释力和稳定性更强。 展开更多
关键词 青少年抑郁 学校人际关系 挫败感 血清素 多基因
原文传递
中医指南临床问题优先遴选评价量表的循证构建
4
作者 胡紫腾 陈雅馨 +12 位作者 张海力 李慧珍 张钰菁 刘玉祁 赵晨 曹文杰 王巍力 宗星煜 杨一玖 张福强 王燕平 梁宁 史楠楠 《中国循证医学杂志》 北大核心 2025年第2期134-140,共7页
目的探索影响临床问题遴选优先性的条目,构建中医指南临床问题优先遴选评价量表。方法采用文献分析法和认知访谈法构建中医指南临床问题优先遴选评价条目池,采用德尔菲法完善并确定条目,形成评价量表工具。结果共纳入47篇文献,两轮德尔... 目的探索影响临床问题遴选优先性的条目,构建中医指南临床问题优先遴选评价量表。方法采用文献分析法和认知访谈法构建中医指南临床问题优先遴选评价条目池,采用德尔菲法完善并确定条目,形成评价量表工具。结果共纳入47篇文献,两轮德尔菲问卷回收率分别为72%和100%;第一轮条目重要性平均值范围为3.78~4.78,变异系数范围0.09~0.30,第二轮平均值范围为4.06~4.72,变异系数范围0.09~0.29;最终构建了《中医指南临床问题优先遴选评价量表(第一版)》,包含4个维度13个条目。结论本研究探索了影响中医指南临床问题遴选优先性的条目并形成了优先遴选评价量表工具,一定程度上改善了当前中医指南临床问题优先遴选缺乏客观性和可解释性的问题,增加了中医指南临床问题遴选流程的透明性。 展开更多
关键词 中医 指南 临床问题 优先遴选
原文传递
基于模式匹配注意力机制的车辆轨迹预测
5
作者 曹越 上官伟 +3 位作者 VISSER Arnoud 陈俊杰 柴琳果 蔡伯根 《中国公路学报》 北大核心 2025年第10期386-401,共16页
轨迹预测可评估周围交通的潜在风险,为自动驾驶决策规划提供安全性保障。针对传统轨迹预测模型依赖人工标定空间交互数据的问题,提出了一种基于模式匹配注意力机制的车辆轨迹预测模型(PMA-LSTM)。首先对车辆历史数据进行预处理,打包为... 轨迹预测可评估周围交通的潜在风险,为自动驾驶决策规划提供安全性保障。针对传统轨迹预测模型依赖人工标定空间交互数据的问题,提出了一种基于模式匹配注意力机制的车辆轨迹预测模型(PMA-LSTM)。首先对车辆历史数据进行预处理,打包为训练批次并构建周围车辆交互关系索引表。随后,利用长短时记忆网络(LSTM)提取时序特征,进一步结合车辆运动学特征以提升模型性能。建立包含可训练参数的预设模式,自学习每种模式对于自我车辆的潜在影响,通过径向基函数实现不同数量的周围车辆对特定模式的注意力匹配,利用卷积网络深层挖掘空间交互特征。最后,通过循环递归解码器模块实现轨迹多模态输出,构建考虑多模态的时空风险势场,形成规划模块的中安全约束,并辅助最优轨迹决策。为验证所提算法有效性,基于真实数据集NGSIM和采集的仿真数据集CARLASIM进行训练,并将模型在以真实基图构建的CARLA-SUMO协同仿真平台上进行实时交互性测试验证与案例分析。测试结果表明:PMA-LSTM在均方根误差(RMSE)、负对数似然误差(NLL)、最终位移误差(FDE)上均领先于其他模型,在5 s预测时间上对比CS-LSTM(M)分别降低了11.4%、9.2%、14.1%,多模态输出比单模态输出在负对数似然误差上下降16.06%。提出的基于模式注意力的轨迹预测算法预测精度更高、意图识别更准、更符合实际规划需求,可为自动驾驶最优轨迹规划提供可靠、安全的技术支撑。 展开更多
关键词 汽车工程 轨迹预测 深度学习 自动驾驶 注意力机制 风险辅助
原文传递
Tourmaline and Mica Chemistry of the Wangxianling Granitoids,South China:Implications for Petrogenesis of Highly Fractionated Granite 被引量:1
6
作者 DUAN Xiaoxia WANG Ziyi +3 位作者 CHEN Bin ZHOU Lingli WANG Zhiqiang CHEN Yanjiao 《Acta Geologica Sinica(English Edition)》 2025年第3期789-805,共17页
Both fractional crystallization and fluid-melt-crystal interaction are involved in the formation of highly fractionated granites.This paper assessed those two processes using geochemistry of muscovite and tourmaline a... Both fractional crystallization and fluid-melt-crystal interaction are involved in the formation of highly fractionated granites.This paper assessed those two processes using geochemistry of muscovite and tourmaline and bulkrock chemistry of multi-phase Wangxianling granitoids,South China.Compositional variations suggest the coarse-grained muscovite granite is produced from fractional crystallization of the two-mica granite whereas the fine-grained muscovite granite represents a distinct magma pulse.Progressive fractionation of quartz,feldspar and biotite leads to elevated boron and aluminum content in melt which promoted muscovite and tourmaline to crystallize,which promotes two-mica granite evolving towards tourmaline-bearing muscovite granite.Fluid-melt-crystal interaction occurred at the magmatichydrothermal transitional stage and resulted in the textural and chemical zonings of tourmaline and muscovite in finegrained muscovite granite.The rims of both tourmaline and muscovite are characterized by the enrichment of fluid mobile elements such as Li,Mn,Cs and Zn and heavierδ^(11)B values of the tourmaline rims(-15.0‰to-13.6‰)compared to cores(-15.7‰to-14.3‰).Meanwhile,significant M-type REE tetrad effects(TE_(1,3)=1.07-1.18)and low K/Rb ratios(48-52)also correspond to fluid-melt-crystal interaction.This study shows zoned muscovite and tourmaline can be excellent tracers of fractional crystallization and late-stage fluid-melt-crystal interaction in highly evolved magmatic systems. 展开更多
关键词 TOURMALINE MUSCOVITE highly fractionated granite fluid-melt interaction South China
在线阅读 下载PDF
家烦宅乱,无心工作:家庭无礼行为对工作意义感的影响
7
作者 白麒钰 贾汇源 +1 位作者 李弈 王恩喆 《心理科学》 北大核心 2025年第5期1210-1220,共11页
当家庭中的不和谐渗透到工作场所,员工的动机与意义感会受到怎样的冲击?研究采用三阶段纵向追踪设计(每阶段间隔四周),共获取297名员工的完整数据(男性占比65.3%)。研究结果显示:家庭无礼行为对员工内部动机和工作意义感有负面影响;内... 当家庭中的不和谐渗透到工作场所,员工的动机与意义感会受到怎样的冲击?研究采用三阶段纵向追踪设计(每阶段间隔四周),共获取297名员工的完整数据(男性占比65.3%)。研究结果显示:家庭无礼行为对员工内部动机和工作意义感有负面影响;内部动机在家庭无礼行为与工作意义感之间发挥了中介作用;员工感知的魅力型领导风格在家庭无礼行为与内部动机的关系中起到了调节作用,即当员工感知的魅力型领导风格较强时,家庭无礼行为对内部动机的负面效应较弱。研究结论深化了家庭无礼行为的跨领域影响研究,也拓展了自我决定理论在跨领域情境中的应用。文章呼吁企业管理者重视家庭因素的潜在影响,并通过有效的领导力来缓解其负面效应。 展开更多
关键词 家庭无礼行为 内部动机 工作意义感 感知的魅力型领导风格 自我决定理论
原文传递
Exploring Distinct Ethical Challenges Deriving from AI-RPA Technical Characteristics
8
作者 Jelle Tuls 《Journal of Computer and Communications》 2025年第2期16-27,共12页
Addressing the existing gap in ethical research surrounding distinct technical characteristics of Robotic Process Automation enhanced with Artificial Intelligence (AI-RPA), this analysis examines the unique ethical di... Addressing the existing gap in ethical research surrounding distinct technical characteristics of Robotic Process Automation enhanced with Artificial Intelligence (AI-RPA), this analysis examines the unique ethical dimensions by positioning AI-RPA as a distinct technological subdivision. From an analytical perspective, this study highlights key characteristics such as minimal reliance on programming, rapid development cycles, and restricted algorithmic control, which differentiate AI-RPA from traditional AI systems. These characteristics underscore the need for tailored ethical considerations, to identify ethical perils within AI-RPA’s technological origins. By positioning AI-RPA as a distinct subdivision and examining its unique characteristics alongside their emerging ethical challenges, this paper enriches the evolving discourse on AI ethics, providing valuable insights for researchers, policymakers, and organizations implementing AI-RPA technologies. 展开更多
关键词 Robotic Process Automation Artificial Intelligence AI-RPA Digital Ethics Distinct Characteristics
在线阅读 下载PDF
RED,WHITE AND BLACK:METHODOLOGIES FOR UNDERSTANDING COLOR SYMBOLISM IN MESOPOTAMIAN MAGIC AND RITUAL
9
作者 Shiyanthi Thavapalan 《Journal of Ancient Civilizations》 2025年第1期1-23,113,共24页
The color cluster red,black and white occurs in the artistic,ritual and magical activities of virtually all cultures around the world,suggesting their preeminence in human symbolic thought.Among the various explanatio... The color cluster red,black and white occurs in the artistic,ritual and magical activities of virtually all cultures around the world,suggesting their preeminence in human symbolic thought.Among the various explanations that have been brought forth to account for the special status of these three colors are:1)evolutionary/ecological arguments,drawing support from vision science,perceptual philosophy and primate biology;2)cognitive arguments,which pay attention to how human beings categorize and create meaning out of perceptual experiences;3)linguistic arguments,as these are the earliest lexicalized color words in most languages;4)and diverse socio-cultural arguments.This paper will explore the manifestation of red,black and white–both in concrete terms,through the use and manipulation of materials,as well as abstract ideas–in Assyrian and Babylonian magical and ritual activities.It will highlight how meaning is created and communicated by relating colors to natural and supernatural phenomena and will further attempt to provide a methodological framework for the analysis of color symbolism. 展开更多
关键词 Akkadian color terminology color symbolism Mesopotamian magic and ritual MATERIALITY SEMIOTICS solid metaphors
在线阅读 下载PDF
Extracellular vesicles as biomarkers for metabolic dysfunctionassociated steatotic liver disease staging using explainable artificial intelligence
10
作者 Eleni Myrto Trifylli Athanasios Angelakis +9 位作者 Anastasios G Kriebardis Nikolaos Papadopoulos Sotirios P Fortis Vasiliki Pantazatou John Koskinas Hariklia Kranidioti Evangelos Koustas Panagiotis Sarantis Spilios Manolakopoulos Melanie Deutsch 《World Journal of Gastroenterology》 2025年第22期27-48,共22页
BACKGROUND Metabolic dysfunction-associated steatotic liver disease(MASLD)is a leading cause of chronic liver disease globally.Current diagnostic methods,such as liver biopsies,are invasive and have limitations,highli... BACKGROUND Metabolic dysfunction-associated steatotic liver disease(MASLD)is a leading cause of chronic liver disease globally.Current diagnostic methods,such as liver biopsies,are invasive and have limitations,highlighting the need for non-invasive alternatives.AIM To investigate extracellular vesicles(EVs)as potential biomarkers for diagnosing and staging steatosis in patients with MASLD using machine learning(ML)and explainable artificial intelligence(XAI).METHODS In this single-center observational study,798 patients with metabolic dysfunction were enrolled.Of these,194 met the eligibility criteria,and 76 successfully completed all study procedures.Transient elastography was used for steatosis and fibrosis staging,and circulating plasma EV characteristics were analyzed through nanoparticle tracking.Twenty ML models were developed:Six to differentiate non-steatosis(S0)from steatosis(S1-S3);and fourteen to identify severe steatosis(S3).Models utilized EV features(size and concentration),clinical(advanced fibrosis and presence of type 2 diabetes mellitus),and anthropomorphic(sex,age,height,weight,body mass index)data.Their performance was assessed using receiver operating characteristic(ROC)-area under the curve(AUC),specificity,and sensitivity,while correlation and XAI analysis were also conducted.RESULTS The CatBoost C1a model achieved an ROC-AUC of 0.71/0.86(train/test)on average across ten random five-fold cross-validations,using EV features alone to distinguish S0 from S1-S3.The CatBoost C2h-21 model achieved an ROC-AUC of 0.81/1.00(train/test)on average across ten random three-fold cross-validations,using engineered features including EVs,clinical features like diabetes and advanced fibrosis,and anthropomorphic data like body mass index and weight for identifying severe steatosis(S3).Key predictors included EV mean size and concentration.Correlation,XAI,and SHapley Additive exPlanations analysis revealed non-linear feature relationships with steatosis stages.CONCLUSION The EV-based ML models demonstrated that the mean size and concentration of circulating plasma EVs constituted key predictors for distinguishing the absence of significant steatosis(S0)in patients with metabolic dysfunction,while the combination of EV,clinical,and anthropomorphic features improved the diagnostic accuracy for the identification of severe steatosis.The algorithmic approach using ML and XAI captured non-linear patterns between disease features and provided interpretable MASLD staging insights.However,further large multicenter studies,comparisons,and validation with histopathology and advanced imaging methods are needed. 展开更多
关键词 Metabolic dysfunction-associated steatotic liver disease Extracellular vesicles Non-invasive biomarkers Machine learning Explainable artificial intelligence Transient elastography Metabolic dysfunction Hepatic steatosis
暂未订购
集体自恋与阴谋论信念的关系及机制
11
作者 田彩玉 茆家焱 +1 位作者 杨沈龙 郭永玉 《应用心理学》 2025年第3期244-257,共14页
集体自恋的核心是对内群体卓越性未充分受到外部承认的不满,因此,相信外群体出于嫉妒而密谋反对内群体这样的“外群体阴谋论”有利于集体自恋者强化内群体是非同寻常的信念。然而,集体自恋者并不是真正认同内群体,他们同样可能相信并参... 集体自恋的核心是对内群体卓越性未充分受到外部承认的不满,因此,相信外群体出于嫉妒而密谋反对内群体这样的“外群体阴谋论”有利于集体自恋者强化内群体是非同寻常的信念。然而,集体自恋者并不是真正认同内群体,他们同样可能相信并参与和内群体有关的阴谋。因此,集体自恋与不同阴谋论之间存在着复杂的联系,但基于不同的心理动机,它们都无法真正实现对心理的补偿作用,反而有助于创设威胁性的情境,催化群体的撕裂。 展开更多
关键词 集体自恋 群体认同 内群体 外群体 阴谋论信念
在线阅读 下载PDF
Neuropsychiatric symptoms and apolipoprotein E genotypes in neurocognitive disorders
12
作者 Madia Lozupone Ivana Leccisotti +9 位作者 Anita Mollica Giuseppe Berardino Maria Claudia Moretti Mario Altamura Antonello Bellomo Antonio Daniele Vittorio Dibello Vincenzo Solfrizzi Emanuela Resta Francesco Panza 《Neural Regeneration Research》 2026年第4期1528-1541,共14页
Complex genetic relationships between neurodegenerative disorders and neuropsychiatric symptoms have been shown, suggesting shared pathogenic mechanisms and emphasizing the potential for developing common therapeutic ... Complex genetic relationships between neurodegenerative disorders and neuropsychiatric symptoms have been shown, suggesting shared pathogenic mechanisms and emphasizing the potential for developing common therapeutic targets. Apolipoprotein E(APOE) genotypes and their corresponding protein(Apo E) isoforms may influence the biophysical properties of the cell membrane lipid bilayer. However, the role of APOE in central nervous system pathophysiology extended beyond its lipid transport function. In the present review article, we analyzed the links existing between APOE genotypes and the neurobiology of neuropsychiatric symptoms in neurodegenerative and vascular diseases. APOE genotypes(APOE ε2, APOE ε3, and APOE ε4) were implicated in common mechanisms underlying a wide spectrum of neurodegenerative diseases, including sporadic Alzheimer's disease, synucleinopathies such as Parkinson's disease and Lewy body disease, stroke, and traumatic brain injury. These shared pathways often involved neuroinflammation, abnormal protein accumulation, or responses to acute detrimental events. Across these conditions, APOE variants are believed to contribute to the modulation of inflammatory responses, the regulation of amyloid and tau pathology, as well as the clearance of proteins such as α-synuclein. The bidirectional interactions among Apo E, amyloid and mitochondrial metabolism, immunomodulatory effects, neuronal repair, and remodeling underscored the complexity of Apo E's role in neuropsychiatric symptoms associated with these conditions since from early phases of cognitive impairment such as mild cognitive impairment and mild behavioral impairment. Besides Apo E-specific isoforms' link to increased neuropsychiatric symptoms in Alzheimer's disease(depression, psychosis, aberrant motor behaviors, and anxiety, not apathy), the APOE ε4 genotype was also considered a significant genetic risk factor for Lewy body disease and its worse cognitive outcomes. Conversely, the APOE ε2 variant has been observed not to exert a protective effect equally in all neurodegenerative diseases. Specifically, in Lewy body disease, this variant may delay disease onset, paralleling its protective role in Alzheimer's disease, although its role in frontotemporal dementia is uncertain. The APOE ε4 genotype has been associated with adverse cognitive outcomes across other various neurodegenerative conditions. In Parkinson's disease, the APOE ε4 allele significantly impacted cognitive performance, increasing the risk of developing dementia, even in cases of pure synucleinopathies with minimal co-pathology from Alzheimer's disease. Similarly, in traumatic brain injury, recovery rates varied, with APOE ε4 carriers demonstrating a greater risk of poor long-term cognitive outcomes and elevated levels of neuropsychiatric symptoms. Furthermore, APOE ε4 influenced the age of onset and severity of stroke, as well as the likelihood of developing stroke-associated dementia, potentially due to its role in compromising endothelial integrity and promoting blood–brain barrier dysfunction. 展开更多
关键词 Alzheimer's disease ApoE isoforms apolipoprotein E gene DEPRESSION Lewy body disease mild cognitive impairment NEUROINFLAMMATION neuropsychiatric symptoms Parkinson's disease stroke traumatic brain injury
暂未订购
Bile spillage in incidental gallbladder cancer is not an independent predictor for survival:A multi-institute retrospective cohort study
13
作者 Mike van Dooren Elise AJ de Savornin Lohman +5 位作者 Rachel S van der Post Frederik JH Hoogwater Peter B van den Boezem Bas Groot Koerkamp Joris I Erdmann Philip R de Reuver 《World Journal of Gastrointestinal Surgery》 2025年第7期138-148,共11页
BACKGROUND Bile spillage occurs more frequently in patients with incidental gallbladder carcinoma(iGBC)and may be associated with poor survival due to presumed high risk of peritoneal seeding.AIM To investigate the im... BACKGROUND Bile spillage occurs more frequently in patients with incidental gallbladder carcinoma(iGBC)and may be associated with poor survival due to presumed high risk of peritoneal seeding.AIM To investigate the impact of bile spillage during primary surgery on the survival of patients with iGBC.METHODS Medical records of patients with iGBC diagnosed between 2000 and 2019 in 27 Dutch secondary centers and 5 tertiary centers were retrospectively reviewed.Patient medical records were assessed.Predictors for overall survival(OS)were determined using multivariable Cox regression.RESULTS Of the 346 included patients with iGBC,138(39.9%)had bile spillage,which was associated with higher American Society of Anesthesiologists classification(P=0.020),cholecystitis(P<0.001),higher tumor stage(P=0.005),and non-radical resection(P<0.001).Bile spillage was associated with poor OS[hazard ratio=1.97,95%confidence interval(CI):1.48-2.63,P<0.001]with a median OS of 12 months(95%CI:7-18 months)vs 34 months(95%CI:14-55 months,P<0.001).In multivariable analysis,spillage was not an independent prognostic factor for survival(hazard ratio=1.21,95%CI:0.84-1.74,P=0.313).CONCLUSION Although bile spillage correlates with prognostic factors,it lacks independent prognostic significance for survival.Patients with an indication for additional treatment should be promptly referred to a specialized hepatopancreatobiliary center,irrespective of whether bile spillage has occurred. 展开更多
关键词 GALLBLADDER Gall bladder Carcinoma Cancer INCIDENTAL Bile spillage Bile spill Bile leakage Bile leak SURVIVAL
暂未订购
Searching for the best post-land abandonment management to enhance long-term carbon storage in Mediterranean mountain areas
14
作者 Melani Cortijos-López Teodoro Lasanta +1 位作者 Erik Cammeraat Estela Nadal-Romero 《Geography and Sustainability》 2025年第2期80-96,共17页
The abandonment of rural activities in the Mediterranean mid-mountains has led to the activation of revegetation processes,as well as the subsequent implementation of various management measures to mitigate the associ... The abandonment of rural activities in the Mediterranean mid-mountains has led to the activation of revegetation processes,as well as the subsequent implementation of various management measures to mitigate the associated ecosystem disservices.Focusing on soil environment and its growing importance in a climate change scenario,it is of great interest to study how land management and landscape changes can affect,not only the soil carbon storage process,but also its dynamics.A study was conducted in La Rioja(Iberian System,Spain),comparing three post-abandonment management strategies:secondary succession,forest management,and shrub clearing and extensive grazing.These strategies were analysed in two types of soil environments(acid and alkaline)and for two depth ranges(0–20 cm and 20–40 cm).Laboratory analyses were performed on aggregate stability and soil organic carbon fractionation with regard to three aggregate sizes(<2 mm,2–5 mm,>5 mm)and three density fractions(free labile,occluded,and heavy fraction).The results showed that:1)SOC content in aggregates<2 mm(relative to total SOC)increases with shrub clearing and grazing strategy in acid environments;2)aggregate stability benefits from the implementation of afforestation in acid environments and from all three study strategies in alkaline ones;3)in acid environments,the percentage of labile fractions(free and occluded)in afforested sites is significantly higher compared with shrubland,while in alkaline environments,recalcitrant SOC is significantly higher in shrub clearing sites.Thus,land management should be focused on SOC storage after land abandonment in Mediterranean mountainous environments. 展开更多
关键词 Mediterranean mountain Soil organic carbon AFFORESTATION PASTURES Natural revegetation
在线阅读 下载PDF
Five-year conditional relative survival up to 10 years post-diagnosis among adolescent and young adult breast cancer patients by age,stage,and receptor subtype
15
作者 Noëlle J.M.C.Vrancken Peeters Daniël J.van der Meer +5 位作者 Marleen Kok Marissa C.van Maaren Marie-Jeanne T.F.D.Vrancken Peeters Sabine Siesling Winette T.A.van der Graaf Olga Husson 《Journal of the National Cancer Center》 2025年第3期297-305,共9页
Background Conditional relative survival(CRS),the probability of survival given that an individual has already survived a certain period post-diagnosis,is a more clinically relevant measure for long-term survival than... Background Conditional relative survival(CRS),the probability of survival given that an individual has already survived a certain period post-diagnosis,is a more clinically relevant measure for long-term survival than standard relative survival(RS).This study aims to evaluate the 5-year CRS among adolescent and young adult(AYA)breast cancer patients by age,tumor stage,and receptor subtype to guide disclosure periods for insurance.Methods Data of all females aged 18–39 years and diagnosed with invasive breast cancer between 2003 and 2021(n=13,075)were obtained from The Netherlands Cancer Registry(NCR).The five-year CRS was calculated annually up to 10 years post-diagnosis using a hybrid analysis approach.Results For the total AYA breast cancer study population the 5-year CRS exceeded 90%from diagnosis and increased beyond 95%7 years post-diagnosis.Patients aged 18–24 reached 95%9 years post-diagnosis,those aged 25–29 after 5 years,and those aged 30–34 and 35–39 after 8 years.For stage I,the 5-year CRS reached 95%from diagnosis,for stage II after 6 years,while the 5-year CRS for stages III and IV did not reach the 95%threshold during the 10-year follow-up.Triple-negative tumors exceeded 95%after 4 years,human epidermal growth factor receptor 2(HER2)positive tumors after 6 years,while hormone receptor(HR)positive tumors did not reach 95%.Conclusion Excess mortality among AYA breast cancer patients tends to be little(CRS 90%–95%)from diagnosis and becomes minimal(CRS>95%)over time compared to the general population.These results can enhance expectation management and inform policymakers,suggesting a shorter disclosure period. 展开更多
关键词 Adolescents and young adults(AYAS) Breast cancer Conditional relative survival(CRS) Excess mortality Relative survival(RS) SURVIVORSHIP
暂未订购
WDR49阳性星形胶质细胞标志额颞叶变性及阿尔茨海默病中神经退行性病变的严重程度
16
作者 Ana Rajicic Lucia A.A Giannini +8 位作者 Emma Gerrits Renee van Buuren Shamiram Melhem Johan A Slotman Annemieke J M Rozemuller Bart J L Eggen John C van Swieten Harro Seelaar 王晶(编译) 《神经损伤与功能重建》 2025年第1期F0003-F0003,共1页
最近在具有GRN致病变异的额颞叶变性(FTLD)中鉴定出一类表达WD重复结构域49(WDR49)的星形胶质细胞亚群。本研究是首次调查这些细胞在其他FTLD亚型和阿尔茨海默病(AD)中的表达及其与病理关系的研究。研究对一组死后脑组织样本进行了免疫... 最近在具有GRN致病变异的额颞叶变性(FTLD)中鉴定出一类表达WD重复结构域49(WDR49)的星形胶质细胞亚群。本研究是首次调查这些细胞在其他FTLD亚型和阿尔茨海默病(AD)中的表达及其与病理关系的研究。研究对一组死后脑组织样本进行了免疫组织化学和免疫荧光分析,样本包括TDP-43蛋白病患者(12例GRN、11例C9orf72、9例散发性TDP-43)、tau蛋白病患者(13例MAPT、8例散发性tau)、10例AD患者和4例对照组,分析部位为额叶、颞叶和枕叶皮质切片中的WDR49和病理性包涵体。研究计算了WDR49阳性细胞数(每平方毫米调整值),并研究了其与TDP-43/tau病理数字化定量面积百分比和神经退行性病变半定量评分的相关性。对WDR49和病理性包涵体进行了定量共定位分析。在FTLD各亚型和AD的大脑实质和(周)血管间隙中均存在WDR49阳性星形胶质细胞,它们具有不同的形态模式,尤其在灰质中富集。在对照组中,发现散在的WDR49阳性细胞包裹着血管。在GRN病例的额叶皮质(FC)、GRN、AD和散发性原发性tau蛋白病的颞叶皮质中,WDR49阳性星形胶质细胞数量最多。在枕叶皮质中,各组中仅发现少量细胞。WDR49阳性星形胶质细胞数量与神经退行性病变和TDP-43病理的严重程度呈正相关,但与tau蛋白病无关。此外,在前额叶和颞叶皮质中,WDR49与TDP-43(14%~21%)和tau(31%~45%)部分共定位。总之,WDR49是FTLD和AD中不同形态星形胶质细胞亚群的标志物,反映了神经退行性病变的严重程度。这些星形胶质细胞可能对病理损伤产生反应而活化,并从血管壁迁移到实质中。 展开更多
关键词 阿尔茨海默病 WDR49 星形胶质细胞 额颞叶变性
暂未订购
Readiness,recovery,and strain:an evaluation of composite health scores in consumer wearables
17
作者 Cailbhe Doherty Maximus Baldwin +2 位作者 Rory Lambe David Burke Marco Altini 《Translational Exercise Biomedicine》 2025年第2期128-144,共17页
Introduction:Consumer wearables increasingly provide users with Composite Health Scores(CHS)–integrated biometric indices that claim to quantify readiness,recovery,stress,or overall well-being.Despite their growing a... Introduction:Consumer wearables increasingly provide users with Composite Health Scores(CHS)–integrated biometric indices that claim to quantify readiness,recovery,stress,or overall well-being.Despite their growing adoption,the validity,transparency,and physiological relevance of these scores remain unclear.This study systematically evaluates CHS fromleading wearablemanufacturers to assess their underlying methodologies,contributors,and scientific basis.Content:Information was synthesised from publicly available company documentation,including technical white papers,user manuals,app interfaces,and research literature where available.We identified 14 CHS across 10 major wearable manufacturers,including Fitbit(Daily Readiness),Garmin(Body Battery^(TM)and Training Readiness),Oura(Readiness and Resilience),WHOOP(Strain,Recovery,and Stress Monitor),Polar(Nightly Recharge^(TM)),Samsung(Energy Score),Suunto(Body Resources),Ultrahuman(Dynamic Recovery),Coros(Daily Stress),and Withings(Health Improvement Score).The most frequently incorporated biometric contributors in this catalogue of CHS were heart rate variability(86%),resting heart rate(79%),physical activity(71%),and sleep duration(71%).However,significant discrepancies were identified in data collection timeframes,metric weighting,and proprietary scoring methodologies.None of the manufacturers disclosed their exact algorithmic formulas,and few provided empirical validation or peer-reviewed evidence supporting the accuracy or clinical relevance of their scores.Summary and outlook:While the concept of CHS represent a promising innovation in digital health,their scientific validity,transparency,and clinical applicability remain uncertain.Future research should focus on establishing standardized sensor fusion frameworks,improving algorithmic transparency,and evaluating CHS across diverse populations.Greater collaboration between industry,researchers,and clinicians is essential to ensure these indices serve as meaningful health metrics rather than opaque consumer tools. 展开更多
关键词 wearable technology digital health heart rate variability consumer wearables
暂未订购
Three subspecies of Black-tailed Godwit share non-breeding sites in the world's largest river delta
18
作者 Delip K.Das Wouter M.G.Vansteelant +9 位作者 Bingrun Zhu Shariful Islam Naim Khandakar Marco van der Velde Chris J.Hassell Jesse R.Conklin Pierrick Bocher Jos C.E.W.Hooijmeijer Yvonne I.Verkuil Theunis Piersma 《Avian Research》 2025年第1期1-10,共10页
During the non-breeding season(September-April),Black-tailed Godwits(Limosa limosa)are commonly seen in coastal and inland wetlands of the Ganges-Brahmaputra-Meghna Delta in Bangladesh.We hypothesize that the Ganges-B... During the non-breeding season(September-April),Black-tailed Godwits(Limosa limosa)are commonly seen in coastal and inland wetlands of the Ganges-Brahmaputra-Meghna Delta in Bangladesh.We hypothesize that the Ganges-Brahmaputra-Meghna Delta,at the overlap between the Central Asian and East Asian-Australasian flyways,may host three subspecies that breed in disjunct areas of temperate and northern Asia:L.l.limosa,L.l.melanuroides,and L.l.bohaii.We used mitochondrial DNA(mt DNA)haplotype network and biometric analysis to determine subspecies in captured individuals,and deployed GPS-GSM transmitters to verify breeding areas of individuals with subspecies assignments.To test for differential habitat preferences,we sampled birds at two ecologically distinct habitats known to host the largest concentrations of non-breeding Black-tailed Godwits in Bangladesh:Nijhum Dweep National Park,a tidal coastal habitat with brackish water on the south-central coast,and Tanguar Haor(‘backmarsh'),a seasonal freshwater floodplain in the north.During the non-breeding seasons of 2021-2022 and 2022-2023,we sampled and measured 93 Black-tailed Godwits,54 of which were equipped with GPS-GSM transmitters.Our mt DNA haplotype network analysis confirmed the presence of limosa,melanuroides,and bohaii subspecies at the study sites.Thus,indeed,Black-tailed Godwits subspecies,despite having distinct breeding ranges,exhibit(partially)overlapping non-breeding ranges in Asia.The subspecies composition differed significantly between sites,with limosa and bohaii dominating in Tanguar Haor and melanuroides in Nijhum Dweep.Of the 21 individuals that were tracked to their breeding grounds,18 migrated to the expected breeding range of their respective subspecies.However,one bird with a limosa haplotype migrated to a known breeding area of bohaii,whereas two birds with melanuroides haplotypes migrated to the supposed breeding range of limosa.Therefore,while ecological factors at both ends of the flyways may shape the morphological and behavioural differences between Black-tailed Godwit subspecies,their delineations and possible gene flow require further studies. 展开更多
关键词 Black-tailed godwits Central Asian flyway Ganges-Brahmaputra-Meghna Delta GPS-GSM tracking Migration mtDNA SUBSPECIES
在线阅读 下载PDF
Demographic performance and climate change response of a pioneer tree species(Pinus massoniana)during ecological restoration in subtropical China
19
作者 Ao Liu Rong Liu +5 位作者 Feiya Lei Jiazheng Wang Yongwei Luo Bingqi Hu Shouzhong Li Xianyu Yang 《Journal of Forestry Research》 2025年第3期107-119,共13页
Climate change is expected to alter the popu-lation dynamics of pioneer tree species and their planned use in sustainable forest management,but we have a lim-ited understanding of how their demographic rates change in... Climate change is expected to alter the popu-lation dynamics of pioneer tree species and their planned use in sustainable forest management,but we have a lim-ited understanding of how their demographic rates change in response to climate changes during ecological restora-tion.Based on 12 years of demographic data for a pioneer tree species(Pinus massoniana)censused in three plots that correspond to three stages of ecological restoration in south-eastern China.We built integral projection models(IPMs)to assess vital rates(survival,growth,reproduction)and population growth in each plot,then evaluated demographic changes to simulated changes in seasonal mean temperature and precipitation in the current and previous census period.The plot representing the medium restoration stage had the highest population growth rate(λ=0.983).Mean population survival probability increased with ecological restoration,and reproduction probability was significantly suppressed at the high restoration stage.Survival is always the most important vital rate forλ,and climate affectsλprimarily via survival at each restoration stage.The current spring tem-perature was the most critical climate variable forλin the low and medium restoration stages,and previous summer temperature was most critical in the high restoration stage.Simulated warming leads to a decrease in the stochastic population growth rate(λ_(s))of P.massoniana in every stage.These findings suggest that during ecological restoration,P.massoniana responds to habitat change via modified demo-graphic performance,thus altering its response to climate change.Despite diverse responses to climate change,the persistence of P.massoniana populations is facing a wide-spread threat of warming states at each restoration stages. 展开更多
关键词 Climate change Demographic performance Ecological restoration Integral projection models Pioneer tree species
在线阅读 下载PDF
上一页 1 2 61 下一页 到第
使用帮助 返回顶部