Results 51 to 60 of about 17,840 (209)

Effect of IL-10 in rats with Fracture Associated with Cerebral Trauma on Bone Fracture Healing [PDF]

open access: yes, 2016
目的:评估脑外伤合并骨折后血清IL-10、TNF-α的含量,IL-10是否对骨折的愈合有促进作用,从而评价脑外伤促进骨折愈合与血清中高IL-10的关系。 方法:选取120只3月龄SD雄性大鼠,体重为195-210g。按照随机数字表法,分为4组,每组30只,分别作以下处理:A组:脑外伤合并股骨骨折组;B组:单纯脑外伤组;C组:单纯股骨骨折组,腹腔注射IL-10蛋白(10μg/kg•d);D组:单纯股骨骨折组,腹腔注射PBS溶液(1ml)。连续6周观察A组和B组大鼠一般情况,并评估颅脑损伤程度 ...
李腾
core  

Cost–benefit analysis of first‐trimester pre‐eclampsia screening: comparison of multivariable Gaussian algorithm with and without placental growth factor

open access: yesUltrasound in Obstetrics &Gynecology, Volume 67, Issue 2, Page 162-167, February 2026.
ABSTRACT Objective Pre‐eclampsia (PE) is a leading cause of maternal and neonatal morbidity and mortality worldwide. Early identification of high‐risk pregnancies in the first trimester allows preventive treatment with low‐dose aspirin. This study aimed to evaluate whether multivariable Gaussian algorithm‐based PE screening strategies, with and without
E. Bonacina   +10 more
wiley   +1 more source

双低剂量在全主动脉和冠状动脉一站式CT血管造影中的临床应用

open access: yesZhongshan Daxue xuebao. Yixue kexue ban, 2017
【目的】探讨前瞻性心电门控螺旋扫描联合低管电压、低对比剂注射速度及剂量技术在全主动脉及冠状动脉一 站式CT成像中的应用。【方法】收集心率≤ 75 次/min且心律齐的临床可疑主动脉病变或主动脉术后复查CT的患者60例, 将其随机分为两组,每组各30例。两组均采用320排CT前瞻性心电门控螺旋模式扫描,除实验组(G1)采用管电压80 kV、 对比剂注射速率3 m/s及对比剂容量0.65 mL/kg扫描方案,常规组(G2)组采用管电压120 kV、对比剂注射速率4 m/s及对比 剂容量1.2 mL ...
朱洪章   +5 more
doaj  

Review of sea anemones compound and bioactivity [PDF]

open access: yes, 2013
海葵(sea anemone)又名海菊花,多指腔肠动物门(Coelenterata)珊瑚虫纲(Anthozoa)海葵目(actiniaria)动物。海葵一般分为爱氏海葵科、链索海葵科、细指海葵科、投海葵科、固边海葵科和绿海葵科等6科37种[1]。海葵体型大多呈圆筒状,触手以辐射对称状在口周围形成数轮,广泛分布在热带和温热带海域,主要固着在海中岩石上或泥沙中 ...
史文军, 吴建平, 张朝晖, 秦松
core  

Atomic Synergy of Vacancy‐Engineered Layered Double Hydroxide/Heteroatom‐Doped Carbon Quantum Dots for Bifunctional Oxygen Electrocatalysis in Zn–Air Batteries

open access: yesRare Metals, Volume 45, Issue 1, January 2026.
ABSTRACT Low conductivity and poor oxygen reduction reaction (ORR) catalytic activity limit the bifunctional catalytic performance of layered double hydroxide (LDH) in zinc–air batteries. In this work, an efficient bifunctional electrocatalyst was prepared by loading nitrogen and phosphorus co‐doped carbon quantum dots (NPCQDs) onto a cationic‐vacancy ...
Wenhao Tang   +4 more
wiley   +1 more source

The toxicity of Rapamycin derivatives—Everolimus, Deforolimus, Zotarolimus on islet [PDF]

open access: yes, 2016
目的:免疫抑制剂的开发与运用一直推动着器官移植领域的发展。自21世纪初,Edmonto方案被提出以后,胰岛移植领域发生的了质的飞跃,尤其是雷帕霉素与他克莫司的开发与利用,使得该方案得到广泛的认可与临床运用。然而随着研究的不断深入,研究者们发现免疫抑制剂在延长移植物存活时间的同时,也给胰岛本身带来了严重的毒性作用,包括抑制胰岛细胞增殖,促进胰岛细胞凋亡,抑制胰岛细胞分泌胰岛素等。应用免疫抑制剂产生的这些不良反应在抗器官移植排斥反应时发生。它们作为抗肿瘤药物应用于临床时也会诱发高血糖的现象。所以 ...
张娟
core  

Yttrium Addition Co‐Enhances the Plasticity and Corrosion Resistance of TiB2‐Refined Al‐Mg‐Zn Alloys

open access: yesRare Metals, Volume 45, Issue 1, January 2026.
ABSTRACT To address the degradation of corrosion resistance induced by Al‐5Ti‐B grain refiner during the strengthening of Al‐Mg‐Zn alloys, this study innovatively employed a rare earth element yttrium (Y) alloying strategy to achieve synergistic enhancement of mechanical strength and corrosion resistance.
Wen‐Tao Qin   +9 more
wiley   +1 more source

Template Engineering of Magnetic Nanoparticles Decorated on Porous Carbon for High‐Performance Multiband Electromagnetic Wave Absorption

open access: yesRare Metals, Volume 45, Issue 1, January 2026.
ABSTRACT Although magnetic carbon materials possess significant potential in the field of electromagnetic wave absorption (EWA) due to the synergistic effect of multiple attenuation mechanisms, the currently reported magnetic carbon EWA materials face some challenges, such as high cost, low yield, and easy agglomeration of the magnetic component ...
Bo Jiang   +9 more
wiley   +1 more source

压水堆一回路污垢放射性分布预测模型

open access: yesHe jishu
为研究压水堆一回路堆芯污垢中放射性物质的产量和分布情况,以典型压水堆(Pressurized Water Reactor,PWR)一回路为研究对象,针对一回路中的放射性物质,建立了污垢沉积及放射性物质的产量分布预测模型。模型对污垢沉积和放射性物质的预测结果与污垢仿真程序CRUDSIM(Chalk River Unidentified Deposits SIMulation)的计算结果差异小于5%。在此基础上,分析了冷却剂流速、氢气含量和冷却剂入口温度的影响。结果表明 ...
王 世伟   +3 more
doaj   +1 more source

The effect of Cu doping on catalytic performance of Fe/β catalyst for NH3-SCR(铜掺杂对Fe/β催化剂NH3-SCR催化性能的影响)

open access: yesZhejiang Daxue xuebao. Lixue ban, 2017
制备了一系列Cu掺杂量不同的Fe/β(40)催化剂,并采用ICP-AES、XRD、H2-TPR、UV-vis和XPS等表征技术分析了催化剂的物化性质.结果表明,适量的铜掺杂能大大提高Fe/β(40)催化剂的低温活性,拓宽其活性温度窗口,但过量的Cu掺杂会降低催化剂的N2选择性.Cu掺杂质量比为1.27%Cu-2%Fe/β(40)的催化剂具有最佳的SCR性能,这与催化剂中存在较多离子交换位的Fe3+和Cu2+物种有关,而存在较多的CuO物种会促进氨高温氧化,使催化剂的N2选择性降低且高温窗口变窄 ...
ZHAORu(赵茹)   +2 more
doaj   +1 more source

Home - About - Disclaimer - Privacy