Results 31 to 40 of about 29,070 (139)
Zhongshan Daxue xuebao. Yixue kexue ban, 1997 摘 要 为了评价增殖细胞核抗原( PCN A)表达和DN A含量在研究腮腺混合瘤细胞增殖活性中的价值, 对60 例良性无复发、复发和恶性腮腺混合瘤用PCN A免疫组化染色技术和流式细胞测量术作PCNA测定和 DN A含量测量。结果显示PCNA表达在各组间和高S期细胞比率( S PF)在无复发和复发组间有显著差异;恶性 混合瘤组与良性无复发组或复发组间有显著差异; PCN A表达与高SPF呈显著性正相关关系。提示PCN A表达 和DN A含量均能反映良恶性混合瘤细胞增殖活性 ...
陈伟良 孔庆瑜 李海刚 陈光晔 任材年
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Zhongguo shiyan zhenduanxue, 2021 宫颈癌是世界上最常见的恶性肿瘤之一,长期以来困扰女性的生命健康,全球每年超过50万女性被诊断为宫颈癌,导致每年30万人死亡[1]。25%-61%的患者在初次治疗后复发,复发时间通常在初治后的两到三年内[2-3]。宫颈癌复发患者预后差,是导致宫颈癌患者死亡的主要原因。复发后的治疗需根据病变部位及初次治疗方式选择,增加了治疗的难度和复杂性。
孙婧, 巴秀敏, 李云峰, 王铁君
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Non‐Members in a Tight Spot: How Norway Navigated Autonomy in EU Pandemic Management
Review of Policy Research, Volume 43, Issue 3, May 2026.ABSTRACT This study offers new insights into how closely integrated non‐member states navigate tensions between autonomy and dependence when urgent policy responses are required within complex supranational frameworks. It does so by exploring how these non‐members exercise their “wriggle room”—a tailored sub‐category of the broader concept of autonomy ...
Sjoerd Alexander de Winter
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Rare Metals, Volume 45, Issue 4, April 2026.ABSTRACT Piezocatalytic technology utilizes mechanical strain or stress‐induced piezoelectric phenomena to produce robust internal electric fields, markedly improving the separation efficiency of e−‐h+ pairs. This method has emerged as a focal point in catalysis by removing reliance on conventional light or electrical energy via its mechanical‐to ...
Yue Zhou +5 more
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Zhongshan Daxue xuebao. Yixue kexue ban, 2010 【目的】 探讨影响非肌层浸润性膀胱尿路上皮癌复发的相关因素及其处理对策65377;【方法】 回顾性分析我院2003年1月到2008年12月161例非肌层浸润性膀胱尿路上皮癌患者临床随访资料,所有病例行经尿道膀胱肿瘤电切术,据术后复发率分析影响复发相关因素65377;【结果】 161例中, 45例术后复发,术后的总复发率为27.95%65377;肿瘤分级为G265380;G3级患者较G1级患者复发率高;肿瘤分期为T1期患者较Ta期患者复发率高;肿瘤多发患者较肿瘤单发患者复发率高 ...
doaj
Zhongguo shiyan zhenduanxue, 2021 复发性流产(RSA)指3次或3次以上在妊娠28周之前的胎儿丢失,包括原发性和继发性[1-2]。目前研究表明反复流产的发生与遗传因素、免疫因素、血栓性疾病、内分泌紊乱有关。而胚胎染色体错误占反复自然流产的50%-60%[3-4]。但具体发病机制尚未完全阐明,可能由多种因素共同导致。妊娠合并全血细胞减少及获得性易栓症临床罕见,现报道反复胎死宫内合并全血细胞减少1例。
黄鲁鑫, 玄志鲁, 李娜
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Dizhen xuebao, 2018 以历史重演原则和构造类比原则为基础，提出了一种基于经验分布的大地震复发概率计算方法，该方法不作任何复发概率分布的强假定，直接通过对大量地震序列数据的蒙特卡罗随机抽样来模拟未来大地震的复发规律，进而统计得到未来一段时间内的大地震发生概率，并以鲜水河断裂带炉霍段和道孚段为实例，利用本文给出的复发概率计算方法得出炉霍段和道孚段未来50年大地震发生概率分别为0.15和0.31。
Xing Guo +3 more
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Rare Metals, Volume 45, Issue 4, April 2026.ABSTRACT Nickel‐based superalloys (Ni‐based superalloys) have attracted extensive attention in laser additive manufacturing (LAM) due to their capability to directly fabricate complex and high‐performance structural components. However, the rapid melting and solidification inherent to LAM result in intense thermal cycling, which induces high residual ...
Tianxiang Lin +9 more
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Zhongshan Daxue xuebao. Yixue kexue ban, 2008 【目的】 探讨原发性肝癌(以下简称肝癌)根治术后复发的相关危险因素。 【方法】 回顾性分析210例根治性切除肝癌患者的临床病理资料,采用Cox模型分析早?晚期复发病例临床病理因素与复发的关系。【结果】 126例患者出现复发(复发率60%),早期复发89例,占70.6%,以Ⅱ型为主,单因素分析显示瘤体直径?血管侵犯?手术切缘?微转移灶和肿瘤分化程度与术后早期复发相关,血管侵犯?微转移灶和病理分级是术后早期复发的独立危险因素;晚期复发37例,占29.4%,以Ⅰ型为主 ...
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Rare Metals, Volume 45, Issue 4, April 2026.ABSTRACT Bismuth anode materials are considered promising anode candidates for sodium–ion batteries (SIBs) due to their high theoretical capacity and appropriate working potential. Nevertheless, the significant volume expansion that occurs during the cycling process restricts its broader application in sodium–ion storage. Herein, Bi/Bi2O3 nanoparticles
Jiaju Lu +3 more
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