Results 61 to 70 of about 1,219,149 (166)
哮喘患儿外周血CD25 与IFN-γ的水平变化及其相关性研究
Zhongshan Daxue xuebao. Yixue kexue ban, 2002 目的】探讨哮喘患儿外周血分化群(CD)25 与IFN-γ的水平变化及其两者在急性发作期的相互关系。【方法】 应用流式细胞仪(FCM)检测发作期、缓解期和正常小儿外周血的CD25+细胞数, 应用生物素-亲合素双抗体夹心酶联免疫吸 附分析术(ABC-ELISA)测定IFN-γ水平。【结果】哮喘缓解期CD25+细胞数(4.13 ±2.20)%和正常对照组(4.11 ±1.82)% 比较无显著性差异, P >0.05, 哮喘发作期CD25 +细胞数(8.61 ±3.30)%显著高于正常对照组和缓解组, P
黄花荣, 麦贤弟
doaj
World Food Policy, Volume 12, Issue 2, November 2026.ABSTRACT This critical ethnographic study examined the perspectives of service providers and organizational leaders working within charitable food services for people experiencing homelessness in two Canadian cities. Informed by Paulo Freire's writings and a human rights‐based approach, we explored how power is enacted through everyday practices and ...
Corinna Easton +4 more
wiley +1 more source
, 2002 离子速度成像是近几年来发展起来的新技术，在分子光解动力学的研究中已成为一种强有力的实验技术手段。作者在论文工作中，参与建造和调试了国内第一套离子成像装置，发展完善了一套成像分析方法。并利用该装置分别对碘原子的光电子能谱和硫醇的光解动力学进行了研究。 在发展这套实验技术的过程中，我们力图使这套装置成为一个能够全面搜集光解过程中各种信号的信息采集平台，并采用速度成像方法大幅度地提高了成像分辨本领。仔细考察了图像分析算法，指出了其中引入的近似并提出了一种修正方法 ...
张竞辉
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四川大学学报. 自然科学版, 1985 本文应用Leray—Schauder度理论讨论了Hammerstein方程连续正解的存在性和个数.本文结果是[1]中某些结果的改进和推广.
严家鹤, 张庆雍
doaj
Effect of decoction of Fuzheng Jiedu Xiaoji formula plus chemoembolization on primary liver cancer in patients. [PDF]
J Tradit Chin Med, 2022 Tong WU +7 more
europepmc +1 more source
From the Margins: Potential Coalitions in Centralized, High‐Capacity States
Policy Studies Journal, Volume 54, Issue 4, November 2026.ABSTRACT The early stages of coalition formation remain an understudied area, particularly in centralized, high‐capacity political systems. Examining actor dynamics at this formative stage can reveal how coalitions form and how limited pluralism constrains their development.
Sreeja Nair, Yuhao Ba, Mohnish Kedia
wiley +1 more source
在多速率BPSK/DBPSK软件解调中多普勒频偏矫正的一种方法
四川大学学报. 自然科学版, 2001 介绍了用于多速率ＢＰＳＫ／ＤＢＰＳＫ软件化解调中的一种多普勒频偏矫正方法．该方法综合利用频率扫描和ＡＦＣ环及ＰＬＬ等频偏矫正方法，能有效估计和矫正达几十倍甚至几百倍码速的频偏，并能兼顾不同的码速和ＢＰＳＫ，ＤＢＰＳＫ两种不同的调制方式，从而解决了在多速率ＢＰＳＫ／ＤＢＰＳＫ信号软件化整体解调过程中多普勒频偏的矫正问题．将该方法用于多速率ＢＰＳＫ／ＤＢＰＳＫ信号软件化整体解调的计算机仿真实验，收到了良好的效果．
王素玉, 王永德, 李辉, 郭恩远
doaj
Rare Metals, Volume 45, Issue 10, October 2026.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
, 2014 本发明涉及锂硫液流电池和锂硫液流电池用正极电解液及其制备，所述锂硫液流电池由一节单电池或由二节以上单电池串联而成的电池模块、正极电解液、负极电解液、正极电解液储罐、循环泵和循环管路组成；单电池包括负极集流体、锂负极、隔膜、正极、正极集流体、密封件；正极电解液装填于正极电解液储罐中。所述正极电解液为含有纳米硫粉的Li2S8、、以及三氟甲基磺酸锂或三氟甲基磺酸亚胺锂的混合溶液，其中溶剂为体积比1:5-5:1的四甘醇二甲醚或乙二醇二甲醚和1.3-二氧戊环组成的混合溶剂；与传统的锂硫电池相比 ...
王倩 +6 more
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