Results 31 to 40 of about 11,958 (123)
Rare Metals, Volume 45, Issue 4, April 2026.ABSTRACT This study presents an assessment of four representative expansive additives—calcium sulphoaluminate–calcium oxide, magnesium oxide, sodium lauryl sulfate, and sodium abietate—and their effects on the expansion behavior, mechanical development, and microstructural characteristics of cemented paste backfill (CPB).
Lijie Guo +5 more
wiley +1 more source
Zhongguo shiyan zhenduanxue, 2011 目的研究尼莫地平对不同浓度氧化低密度脂蛋白诱导的人血管内皮细胞凋亡的影响。方法在人脐静脉内皮细胞株ECV304培养基中加入不同浓度氧化低密度脂蛋白和尼莫地平（1.2μg/ml）,作用6-24 h。透射电镜观察内皮细胞ECV304的凋亡情况;流式细胞术（FCM）检测细胞凋亡率;用激光共聚焦显微镜检测钙离子浓度。结果不同浓度氧化低密度脂蛋白能明显诱导培养的内皮细胞发生凋亡,尼莫地平可显著降低氧化低密度脂蛋白诱导的内皮细胞凋亡率 ...
刘秀玲 +4 more
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Rare Metals, Volume 45, Issue 3, March 2026.ABSTRACT High‐entropy alloys (HEAs) have attracted considerable interest from researchers owing to their tunable chemical compositions, exceptional structural stability, and promising catalytic properties. However, their large‐scale application is often hindered by complex manufacturing techniques and poor durability.
Sheng Guo +9 more
wiley +1 more source
体外循环期间肺动脉灌注低温肺保护液及低温氧合血对犬的肺保护作用
Zhongguo shiyan zhenduanxue, 2006 目的研究体外循环期间肺动脉灌注低温保护液及低温氧合血对犬的肺保护作用。方法将12只杂种犬随机分为氧合血组及保护液组,各6只,左肺为对照组。体外循环（CPB）前及停CPB后不同时间点,监测气道峰压、肺血管阻力和右肺静脉血氧分压,留取血标本做生化分析以及对肺组织进行光、电镜观察。结果肺保护液组CPB后气道峰压、肺血管阻力、肺静脉氧分压、肺泡-动脉氧压力差、支气管肺泡灌洗液、肺组织MDA及组织学及透射电镜结果均明显优于氧合血组,后者又明显优于对照组。结论肺动脉灌注低温氧合血,有一定的肺保护作用 ...
林柏松 +4 more
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Rare Metals, Volume 45, Issue 3, March 2026.ABSTRACT The development of highly efficient and stable nonprecious metal electrocatalysts for the acidic oxygen evolution reaction (OER) is crucial to advance proton exchange membrane (PEM) water electrolysis. In this work, a dual synergistic strategy was proposed by constructing a Ce‐modified MnO2/MnO heterostructure.
Chuanbin Li +7 more
wiley +1 more source
野生动物学报, 2018 研究了在低氧应激条件下,世居高原小哺乳动物高原鼠兔(Ochotona curzoniae)和SD大鼠(Rattus norregicus)骨骼肌中HIF-1α和VEGF的蛋白质水平变化及HIF-1α和VEGF的相关性。运用双位点免疫酶测定法(ELISA)检测骨骼肌中HIF-1α和VEGF的表达水平。结果表明,在低氧暴露(6 h)条件下,高原鼠兔和SD大鼠氧化和糖酵解型肌纤维中HIF-1α和VEGF的表达水平都显著高于常氧组 ...
谢惠春 罗巧玉 陈 志 乔 枫
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Interface Issues of Inorganic Solid‐State Electrolytes in Secondary Magnesium Batteries
Rare Metals, Volume 45, Issue 3, March 2026.ABSTRACT Solid‐state magnesium batteries (SSMBs) have gained significant attention as promising candidates for next‐generation safe energy storage systems because of the abundance of magnesium (Mg) in the earth's crust, superior energy density, and inherent nonflammability.
Jiren Wang +9 more
wiley +1 more source
Huli yanjiu, 2005 [目的 ]探讨面罩给氧和鼻塞给氧缓解腹部手术后低氧血症的效果。 [方法 ]择期上中腹部手术病人 ,术后回病房第一时间监测血氧饱和度 （SpO2 ）≤ 90 %的病人 44例 ,将其随机分为面罩组及鼻塞组 ,分别给予面罩和鼻塞给氧方式 ,观察给氧 4h、6h、8h病人血氧饱和度的变化及病人舒适度反应。 [结果 ]面罩组的氧疗效果明显优于鼻塞组 （P
王惠莹, 许琼, 蔡可莉, 钟晓珊
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利用去囊导管下咽部给氧快速纠正无痛胃镜肥胖患者血氧饱和度的研究
Zhongguo shiyan zhenduanxue, 2014 目的探讨利用去囊后的气管导管（简称去囊导管）下咽部给氧,快速纠正无痛胃镜检查中肥胖患者血氧饱和度的可能性。方法选择无痛胃镜肥胖患者1274例,随机分为鼻导管组（A组）和下咽部导管组（B组）,当无痛麻醉过程中血氧饱和度下降10%以上时,A组采取加大鼻导管氧流量、抬高下颌等方式纠正低氧状态,B组通过去囊导管下咽部供氧纠正低氧状态。结果 A组和B组患者出现血氧饱和度下降10%以上者分别为617例（96.86%）和598例（93.86%）,两组无明显差异（P>0.05）。A组中303例（49.11 ...
刘佰纯 +6 more
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Zhongguo shiyan zhenduanxue, 2013 目的探讨氧化乐果对大鼠骨骼肌组织氧化损伤的影响。方法将40只雄性Wistar大鼠随机分为4组,正常对照组,低剂量组,中剂量组和高剂量组,每组10只。低剂量组,中剂量组和高剂量组每天分别给予1/20、1/10、1/5LD50的氧化乐果,采用灌胃的途径给药,连续给药8周,检测大鼠血糖水平,骨骼肌组织中丙二醛（Malondialde-hyde,MDA）含量、超氧化物歧化酶（Superoxide dismutase,SOD）、过氧化氢酶（Catalase,CAT）和谷胱甘肽过氧化物酶（Glutathione ...
时佳宏 +6 more
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