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骨髓增生异常综合征合并贝赫切特综合征的机制及治疗研究进展

open access: yes浙江大学学报. 医学版
骨髓增生异常综合征是克隆性造血组织肿瘤,表现为慢性血细胞减少症伴细胞形态发育异常,易进展为骨髓衰竭或急性髓系白血病。贝赫切特综合征是一类特殊的系统性血管炎,主要表现为复发性口腔溃疡、皮肤损害、眼部炎症等。近年来,骨髓增生异常综合征合并贝赫切特综合征的病例报道增多,提示两者之间存在潜在的病理联系。免疫细胞的异常激活、细胞因子的异常分泌以及细胞遗传学改变等可能在骨髓增生异常综合征合并贝赫切特综合征的发病机制中起重要作用。目前,骨髓增生异常综合征合并贝赫切特综合征的治疗策略主要基于个体化原则,包括免疫抑制治疗、
付 慧, 余 建
doaj   +2 more sources

黄土区坡面表层土壤容重和饱和导水率空间变异特征

open access: yesShuitu Baochi Xuebao, 2004
土壤容重和饱和导水率是影响坡地土壤入渗产流和抗侵蚀能力的两个重要因素,研究径流小区表层土壤容重和饱和导水率在坡面的空间变化规律,有助于深入理解坡地的降雨入渗产流产沙规律。借助经典统计学和地质统计学,采用1m网格布点法对神木六道沟流域41m×5m径流小区表层土壤容重和饱和导水率坡面空间变异规律进行研究,结果表明:(1)表层土壤容重沿坡面的变化没有明显的规律,经地质统计学分析土壤容重具有明显的空间结构和自相关特征,自相关特征长度为7.6m。(2)表层土壤饱和导水率在坡面的变化也不具备明显规律 ...
郑纪勇 邵明安 张兴昌
doaj   +3 more sources

纵向岭谷区植被特征参数的空间变异 [PDF]

open access: yes, 2006
采用GPP(总初级生产力)、NPP(净初级生产力)、NDVI(归一化植被指数)、EVI(增强型植被指数)四项表征植被特征的参数,对中国西南纵向岭谷区植被特征参数的空间变异性进行分析.采用Moran系数(MC)对植被特征参数的空间自相关程度进行度量,采用半变异函数进行西南纵向岭谷区植被特征参数的空间分异及其结构特征研究.研究结果表明:(1)植被特征参数在全局范围内呈现负的空间自相关,各向异性自相关程度均表现在南-北方向自相关程度较大,其次为东南-西北方向;(2)植被特征参数的空间变异尺度较大;(3 ...
戴尔阜   +5 more
core   +1 more source

Learning Styles, Engagement and Anxiety in AI‐Mediated Writing: A Multimodal Feedback Study

open access: yesInternational Journal of Applied Linguistics, EarlyView.
ABSTRACT Artificial intelligence (AI) tools now permeate English academic writing. However, evidence on how feedback modalities align with student differences and with psychological mechanisms remains limited. Prior work often reduced learning styles to simple matches with delivery modes and treated learning engagement and writing anxiety as peripheral.
Yi Ren   +3 more
wiley   +1 more source

Integrated Implantation of an Ultrasound‐Actuated BiFeO3 Piezoelectric Film and Bone Marrow Mesenchymal Stem Cell Sheet for Spatially and Stage‐Programmed Osteoarthritis Repair

open access: yesRare Metals, Volume 45, Issue 11, November 2026.
ABSTRACT Osteoarthritis (OA) therapy remains constrained by the coexistence of irreversible cartilage loss and a persistently hostile joint microenvironment characterized by oxidative stress, synovial inflammation, and impaired tissue‐regenerative signaling.
Xinyu Wu   +11 more
wiley   +1 more source

Addressing the Right to Food Through Food Expenditure Burdens: Distributional Evidence Among Low‐Income Farming Families in Brazil (2012–2023)

open access: yesWorld Food Policy, Volume 12, Issue 2, November 2026.
ABSTRACT Household food expenditure continues to be a key factor in ensuring the realization of the Human Right to Adequate Food. Particularly in Brazil, access to food can be limited by economic constraints in vulnerable families, especially among farming families, who have been more vulnerable to food insecurity in recent years in the country.
Lucas de Almeida Moura   +3 more
wiley   +1 more source

Lattice‐Defect‐Coordinated Microstructural Continuity and Mechanical Compatibility in LPBF‐Fabricated CoCrNi/316L Bimetallic Structures

open access: yesRare Metals, Volume 45, Issue 10, October 2026.
ABSTRACT Bimetallic structures fabricated by laser powder bed fusion (LPBF) provide an effective strategy for achieving multifunctional integration, yet interfacial structural continuity and the role of lattice defects remain insufficiently understood.
Jinguo Ge, Shuo Yin
wiley   +1 more source

High‐Entropy Alloys for Photocatalysis: From Cocatalyst Engineering to Multifunctional Active Platforms

open access: yesRare Metals, Volume 45, Issue 9, September 2026.
ABSTRACT Photocatalysis has emerged as a promising approach for solar energy conversion and environmental remediation. However, its practical implementation is still hindered by limited charge‐separation efficiency, slow surface reaction kinetics, and insufficient catalyst stability.
Mengting Zhang   +5 more
wiley   +1 more source

Enhanced Oxygen Reduction Reaction Performance of Fe‐N4 Single‐Atom Catalysts Through Fe3C Coupling

open access: yesRare Metals, Volume 45, Issue 9, September 2026.
ABSTRACT Understanding the electronic factors contributing to the high oxygen reduction reaction (ORR) activity of Fe‐N4 sites remains a significant challenge due to the localized Fe 3d orbitals and their sensitivity to the coordination environment.
Shichang Cai   +19 more
wiley   +1 more source

Toward a New Generation of AI‐Enabled Wearable Sensors

open access: yesRare Metals, Volume 45, Issue 9, September 2026.
ABSTRACT Wearable sensors have emerged as important platforms for noninvasive, real‐time, and continuous monitoring of physiological information, with growing applications in personalized healthcare, human‐machine interfaces (HMIs), and robotic empowerment.
Tianqi Yang   +7 more
wiley   +1 more source

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