Results 21 to 30 of about 232,606 (165)
新常态下劳动力转移、资本转移对区域差异影响的检验 [PDF]
文章构建了引入资本转移的一般均衡模型,分析新常态下劳动力和资本转移对区域差异的影响。理论模型和实证检验结果表明,劳动力和资本转移都能缩小两地的收入差距;转移成本的减小会促进劳动力转移,而劳动力相对效率的提高,会促进劳动力和资本的转移;进一步的研究表明,城乡差距缩小的直接原因是农村居民可支配收入的提高。国家社会科学基金资助项目 ...
李宏飞, 朱冬辉, 李团中
core +1 more source
转移力不同的肺癌克隆细胞中nm23-H1基因产物NDPK 的表达
【目的】比较转移抑制基因nm23-H1 表达产物核苷酸二磷酸激酶(nucleoside diphosphate kinase , NDPK)在转移力 不同的肺癌克隆株中的表达。【方法】通过单细胞克隆技术及裸鼠接种筛选出高转移及低转移的人肺巨细胞癌克隆细胞株及 高转移的人肺腺癌克隆细胞株, 用LSAB 免疫组化法检测nm23-H1 基因产物NDPK 的表达。【结果】NDPK 在高转移及低转 移的人肺巨细胞癌克隆细胞移植瘤及转移瘤中均有表达, 高转移株的阳性细胞数目及强度均高于低转移株和裸鼠正常肺组
张 彬 +3 more
doaj
ABSTRACT This paper examines how governments navigate policy legitimacy during crises through three distinct discursive processes: legitimization, delegitimization, and blame avoidance. Using a sequential mixed‐methods design, the study analyzes Denmark's decision to cull all mink during the COVID‐19 pandemic. The quantitative analysis of 947 newspaper
Olivier Rubin +3 more
wiley +1 more source
目的探讨溶骨性骨代谢生化指标尿Ⅰ型胶原交联氨基末端肽(uNTX)检测在恶性肿瘤骨转移诊断中的价值。方法对24例骨转移患者及34例无骨转移的患者,利用ELISA方法测定uNTX水平。结果骨转移组患者uN-TX明显高于无骨转移组 ...
王玲, 王宏, 邱阳
doaj
ABSTRACT Nature conservation conflicts increasingly extend beyond ecological objectives to disputes over decision‐making legitimacy, institutional authority, and competing understandings of landscape and expertise. This article examines the conflict over the proposed designation of Křivoklátsko as a national park in the Czech Republic between 2021 and ...
Filip Simon
wiley +1 more source
成果转移转化是科技成果从实验室到实现量产的必经阶段。在此过程中形成的档案,不仅仅是对实验室科学研究的总结和完善,也是科技成果产业化的助推器。明确科技成果转移转化档案的归档范围,规范科技成果转移转化档案的整理归档,对科技成果的推广转移 ...
韦玮, 胡楠
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ABSTRACT Surface‐enhanced Raman scattering (SERS) has emerged as a highly sensitive and specific technique for tumor imaging, owing to its narrow spectral features, resistance to photobleaching, and capability for multiplexed detection. However, its clinical translation remains limited by poor tissue penetration and the absence of intrinsic anatomical ...
Xinyu Miao +7 more
wiley +1 more source
ABSTRACT Lithium‐rich manganese‐based cathodes (LRM) deliver high discharge capacities beyond 250 mAh g−1, but their practical deployment is restricted by irreversible oxygen redox, structural reconstruction, sluggish kinetics and unstable cathode‐electrolyte interfaces (CEI). Here, we develop a colloid‐assisted anchoring‐diffusion engineering strategy
Jia‐Nan Hao +13 more
wiley +1 more source
ABSTRACT Lung cancer remains a major cause of cancer‐related mortality worldwide, and non‐small cell lung cancer (NSCLC) accounts for the largest proportion of diagnosed lung cancer cases. Exosomal programmed death‐ligand 1 (PD‐L1) has attracted increasing attention as a potential liquid‐biopsy biomarker associated with tumor immune regulation; however,
Chen Su +6 more
wiley +1 more source
增强CT淋巴结形态联合错配修复蛋白表达检测对结直肠癌区域淋巴结转移的评估作用
目的 分析增强电子计算机断层扫描(CT)淋巴结形态联合错配修复蛋白(MMR)表达检测对结直肠癌区域淋巴结转移的评估作用。方法 选取2019年8月-2021年8月收治的结直肠癌患者89例,均采取手术治疗,术前行增强CT扫描及病理穿刺检测病灶组织MMR表达情况。以术中结果为标准,评价增强CT淋巴结形态联合MMR表达检测对直肠癌区域淋巴结转移的评估价值。结果 淋巴结转移患者高分化和pT3-4期百分率与淋巴结未转移患者比较,差异有统计学意义 ...
严征远, 卜雪峰, 曹能琦, 张恒
doaj

