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Cell Proliferation, Volume 57, Issue 4, April 2024.Our study reveals that MSCs derived from human adipose tissue exhibit cellular nuclear decondensation, reduced heterochromatin, thinning of the nuclear lamina, and increased expression of inflammatory regulatory factors in response to inflammatory factors stimuli.
Yunpeng Chu +11 more
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International Comparison Results of Personal Dose Equivalent Hp(0.07) and Hp(3) in Beta Radiation [PDF]
To establish the national primary standard for beta radiation tissue absorbed dose and to achieve international equivalence, the National Institute of Metrology (NIM) of China participated in the BIPM KCDB: EURAMET.RI(I)-S16 comparison that organized by ...
ZHANG Xuan1, 2, HUANG Jianwei1, LI Dehong1, , LIU Chuanfeng1, ZHANG Jian1, YANG Zhijun1, YANG Yang1
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Dianci bileiqi, 2022 防雷金属网主要用于碳纤维复合材料(CFRP)蒙皮雷电直接效应的防护，同时金属网和CFRP共同对高强度辐射场(HIRF)产生屏蔽效果。通过有限元仿真的方法，提取铺设有防雷金属网的CFRP蒙皮单元进行精细建模，设计二端同轴传输线屏蔽模型，采用S参数计算屏蔽效能(SE)。计算分析在HIRF环境下，铺设有防雷金属网CFRP蒙皮的SE。结果表明：1)防雷金属网在较低频段有较好的SE,随着频率增大，孔缝效应导致SE明显下降。当信号超过800 MHz时，SE低于40 dB,40 G时SE仅为6 dB左右；2 ...
王昭, 杜哲, 段雁超, 张培培
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Zhongguo shiyan zhenduanxue, 2020 目的探讨鸢尾苷元(tectorigenin)对辐射损伤小鼠造血系统的防护效果。方法雄性昆明小鼠随机分为5组,即正常对照组、辐照模型组和鸢尾苷元低、中、高剂量给药组。各给药组辐照前灌胃给药3d,对照组、模型组给予等体积溶媒。于第4d,除对照组外,其余各组小鼠均接受4Gy X射线全身性照射1次。辐照后继续灌胃,分别于第7、14、21、28d麻醉后经心脏采血,取胸腺、脾及骨髓,计算脏器指数,进行血常规、骨髓有核细胞数和DNA含量检测。结果鸢尾苷元给药组小鼠外周血白细胞、血小板 ...
王金凤 +5 more
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Dianci bileiqi, 2021 针对舰船桅杆和高塔上的同轴线缆近距离耦合雷电电磁脉冲的问题,通过对同轴耦合理论的分析,建立同轴线缆近距离耦合雷电电磁脉冲的实验模型。采用组合波发生器模拟8/20μs雷电流波形,用长1 m直径16 mm的金属棒模拟雷电通道并作为辐射源,改变同轴线缆的长度以及距辐射源的距离进行试验。得出以下结论:同轴线缆近距离耦合雷电波时,线缆终端所得的电压波形仍为双指数波,在0.1～0.4μs有强烈的阻尼震荡,当线缆终端开路或接匹配电阻时,上升沿时间较短,约为1μs;当线缆终端屏蔽层接地时,上升沿时间变长,约为10μs ...
李祥超, 储蕾, 文巧莉, 欧阳文
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Expert consensus of 177Lu-labeled PSMA radioligand therapy for clinical practice of prostate cancer (2024 edition) [PDF]
177Lu-labeled prostate-specific membrane antigen radioligand therapy (177Lu-PSMA-RLT) is an innovative treatment approach that precisely delivers β radiation emitted by 177Lu to prostate cancer cells, causing radiation damage to the tumor cells’ DNA and ...
Cancer Nuclear Medicine Committee of China Anti-Cancer Association, Chinese Association of Nuclear Medicine Physicians
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Investigation and Analysis of Radiation Dose and Typical Values in Adult Computed Tomography Examinations [PDF]
Objective: This study aimed to investigate the radiation dose levels and typical values of computed tomography (CT) devices in our unit, providing a basis for optimizing radiation protection.
Bin ZHANG +8 more
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Fushe yanjiu yu fushe gongyi xuebao随着5G技术发展，5G基站的大量部署导致空间电磁辐射强度增加，这可能对公众健康构成潜在威胁。本文基于电磁剂量学原理，建立标准人体模型，并通过四阶Cole-Cole模型计算了人体各组织的介电参数。利用Ansys Electronics Desktop软件中的HFSS模块，设计5G基站天线阵列，并计算不同位置的人体电磁暴露水平。结果显示，在主辐射方向上，人体躯干局部SAR最大值为1.53×10-3 W/kg，人体头部局部SAR最大值为0.020 9 W/kg，入射功率密度最大值为0.007 13 W/m² ...
李 致远, 逯 迈
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Preliminary Study on Effect of Large Natural Ventilation Cooling Towers on Diffusion at Typical Nuclear Power Plants [PDF]
The offshore nuclear power plant site adopts a secondary circulation cooling water supply method, equipped with large countercurrent seawater natural ventilation cooling towers.
ZHANG Junfang1, 2, , LI Ruojie1, 2, LI Yunpeng1, 2, LYU Minghua1, 2, ZHAO Dan1, 2, PAN Yanhui1, 2, LYU Sibo1, 2, YAO Yichen1, 2, YAO Rentai1, 2
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Zhongguo shiyan zhenduanxue, 2012 放射治疗是治疗恶性肿瘤主要手段之一,但是其在杀伤肿瘤细胞的同时也会对机体造成一定程度的损伤,包括氧化应激损伤、造血系统的功能异常、免疫功能障碍等,因此,放射防护剂的应用对保护患者正常组织,提高放射剂量,增加治愈率及医护人员、其它人群的辐射防护具有重要意义。
陈奕冰 +5 more
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