Results 21 to 30 of about 595 (150)
Structurally Diverse Quinoline Alkaloids With Antileukaemia Activities From Taraxacum mongolicum
Journal of Food Biochemistry, Volume 2025, Issue 1, 2025.Taraxacum mongolicum, a medicinal and food homologous traditional Chinese medicine, has important research value in clinical practice. Eight new quinoline alkaloids (1–8), including 1N‐geranyl quinoline alkaloids (1–3), 3,4‐phenylquinoline alkaloids (4–6) and 10‐carbonyl‐11‐pyrrolyl quinoline alkaloids (7–8), and twelve known quinoline alkaloid ...
Xiaodong Zhang +7 more
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He jishu随着核技术在医疗领域的广泛应用，对辐射防护材料的需求日益增长。而含铅防护材料存在重量大、生物毒性等问题，亟需开发轻质、无铅、柔性的X射线防护材料。针对医疗诊断用X射线管电压范围（<150 kV），系统研究了X射线防护机理，并优化设计了防护材料。首先，通过XCOM程序计算分析了不同元素的光子质量衰减系数，发现钨（W）、铋（Bi）和钆（Gd）元素在不同能量区间表现出互补的K吸收边效应；再利用蒙特卡罗方法对W、Bi、Gd元素组合的屏蔽性能进行了模拟预测；最后实验制备了W ...
王 博宇 +8 more
doaj +1 more source
Targeting Hepatocellular Carcinoma: Schisandrin A Triggers Mitochondrial Disruption and Ferroptosis
Chemical Biology &Drug Design, Volume 104, Issue 6, December 2024.This diagram illustrates the proposed mechanism by which Schisandrin A (SchA) affects hepatocellular carcinoma (HCC) cells. SchA induces reactive oxygen species (ROS) generation in mitochondria, leading to oxidative stress and mitochondrial dysfunction.
Lin‐wei He +5 more
wiley +1 more source
Fushe yanjiu yu fushe gongyi xuebao硅橡胶因其优异的性能被广泛应用于核工业、航空航天等辐射环境，但辐射会导致其性能退化。本研究提出将香豆素基前荧光氮氧自由基（PC343）引入硅橡胶基体中，以同步实现辐射老化的防护与灵敏监测。通过溶胀法将PC343均匀引入硅橡胶（SR-P）中。电子顺磁共振波谱分析证实PC343能与硅橡胶被辐照后产生的自由基发生反应，展现出清除自由基的能力；气体红外分析进一步证明PC343能减少烷烃气体生成（吸收剂量1 kGy的SR-P烷烃产量较纯硅橡胶降低约40%），具有良好的辐射老化防护功能；荧光光谱显示 ...
黄 镇东 +6 more
doaj +1 more source
Radiological Characterization Study for Decommissioning of the ADS Sub-Critical Experimental Assembly [PDF]
ADS sub-critical experimental assembly is the first decommissioning sub-critical assembly，by investigating the decommissioned radioactive sources of which，a method which is applicable to the decommissioning of zero-power facilities was developed.
Geng ZHANG +6 more
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Current progress and the development of food contaminants standards in China [PDF]
, 2020 Food contaminant standards are an important way to control food contamination and ensure food safety. After more than 30 years of development, our food contaminant standards have been continuously improved, which have played an important role in ...
Yi SHAO, Yongning WU
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Ultraviolet radiation protection factors of livestock shade cloths for free‐range pigs
Veterinary Dermatology, Volume 35, Issue 6, Page 641-651, December 2024.Background – Protection from solar ultraviolet radiation (UVR) is paramount in light‐skinned pig breeds such as Yorkshire or Landrace to avoid sunburn. Objectives – Determination of the UVR exposure of a pig and the sun protection abilities of shade cloths with different shade rates.
A. W. Schmalwieser +4 more
wiley +1 more source
Protective Effect of Noni Polysaccharide on Ionizing Radiation Injury Mice and Its Effect on Intestinal Microbiota [PDF]
Objective: This study was to investigate the protective effect of Noni polysaccharides on ionizing radiation injury and its regulation of intestinal flora in mice.
Aixin LI +5 more
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Journal of Cellular and Molecular Medicine, Volume 28, Issue 22, November 2024.ABSTRACT The aim of this study was to investigate whether long intergenic non‐coding RNA 1929 (LINC01929), a novel long non‐coding RNA, could serve as a prognostic biomarker for various tumours and explore its function. The expression and prognosis of LINC01929 across 33 different tumour types in patients in the Cancer Genome Atlas (TCGA) database were
Yanlin Gu +4 more
wiley +1 more source
Current Status and Research Trend on Ecological Migration of Radionuclides and Radiation Dose Assessment [PDF]
The transport and transfer of radionuclides in the ecological environment (referred to migration) have long been of a particular concern in the field of radiological environmental protection.
LIU Senlin, WU Renjie, ZHANG Xinyu, LI Jinfeng
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