Results 71 to 80 of about 25,070 (217)
Rare Metals, EarlyView.ABSTRACT Single‐atom catalysis hinges on fundamental challenges in precisely controlling metal‐support interactions and rationally regulating metal–adsorbate relationships. Herein, we report a universal strategy for constructing highly efficient and well‐defined Cu(I) single‐atom catalysts based on a trifurcate AlL3 molecular support.
Donghui Zhang +9 more
wiley +1 more source
Rare Metals, EarlyView.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
Zhongguo shiyan zhenduanxue, 2019 目的探究红景天甙对体内SACC-2细胞增殖作用的影响。方法小鼠右侧腹股沟处行SACC-2细胞皮下注射,注射细胞量为3×106/只。种瘤第2天通过腹部注射的方式对小鼠进行不同的治疗处理,分为红景天甙处理组、5-Fu处理组、联合用药组及生理盐水处理组。治疗时间自种瘤第2天开始,周期为2天,共进行5次治疗。取出含瘤组织后利用HE染色观察药物对肿瘤形态的影响;免疫组织化学染色检测红景天甙处理对SACC-2细胞增殖的影响和对SACC-2细胞凋亡相关蛋白表达的影响。结果 HE染色显示生理盐水组细胞内胞核异型性大 ...
张晓恬 +4 more
doaj
Rare Metals, EarlyView.ABSTRACT The development of sodium‐ion batteries (SIBs) is limited by slow charge transfer kinetics and large material volume changes caused by the large radius of Na+. Leveraging the excellent physicochemical properties and unique heterostructures of metal selenides, ultrafine hetero‐CuFeSe2‐CoSe2 nanoparticles are in situ wrapped by ...
Ying Zhu +5 more
wiley +1 more source
Zhongguo shiyan zhenduanxue, 2008 目的探讨甲钴胺、叶酸对脑缺血损伤的保护作用。方法选健康SD大鼠120只,随机分为5组,假手术组、缺血再灌注组、甲钴胺预处理缺血再灌注组、叶酸预处理缺血再灌注组、甲钴胺联合叶酸预处理缺血再灌注组。制作大鼠大脑中动脉（MCAO）模型,预处理组给予甲钴胺、叶酸、甲钴胺+叶酸灌胃治疗,预先4周,每天2次灌胃。测定各组脑梗死面积、凋亡细胞数、不同时间点测定血浆中Hcy含量、免疫印迹法测定ERK的活性。结果叶酸、甲钴胺预处理组的脑梗死面积、细胞凋亡数、Hcy含量均比缺血组减少 ...
金永民, 姜美子, 全银实
doaj
Rare Metals, EarlyView.ABSTRACT Two‐dimensional (2D) nonlayered niobium nitrides have attracted considerable interest for electrochemical energy storage. However, the synthesis of these materials is hampered by their nonlayered crystal structures, which are characterized by strong three‐dimensional chemical bonding.
Rui Huo +7 more
wiley +1 more source
转化生长因子β1（TGF-β1）在实验性根尖周病愈合中的作用
Zhongguo shiyan zhenduanxue, 2006 目的探讨TGF-β1在实验性根尖周病愈合中作用,为临床治疗提供依据。方法35只Wister大鼠上颌磨牙制成根尖周炎动物模型,用组织病理学方法观察根尖病变区组织愈合情况。结果实验组病变部位3天就可见细胞增生活跃,7 d出现骨组织修复现象,而对照组21 d出现骨组织修复现象。结论TGF-β1在慢性根尖周炎的骨性愈合过程中发挥积极的修复作用。
张颖丽, 胡晓春, 黄洋, 毕崇才
doaj
Study on the Micropropagation of Dendrobium nobile(春石斛组织培养技术研究)
Zhejiang Daxue xuebao. Lixue ban, 2003 以春石斛Dendrobium nobile white Christmas"seagull"品种的不同生理年龄的不同组织为外植体,研究了灭菌方式对成活率的影响;BA与NAA不同浓度组合对诱导不定芽及不定芽增殖的影响;GA3和亚精胺对壮苗的作用.结果表明:0.1% HgCl2 6 min组合嫩茎成活率最高;0.1% HgCl2 8 min老茎成活率最高;0.5 mg/L NAA和1.0 mg/L BA组合最利于诱导不定芽;GA3和亚精胺对不定芽的增殖和生长有促进作用.
MAOBi-zeng(毛碧增) +3 more
doaj +1 more source
Effects of Na/Ca/Fe intermetallic interactions on nitrogen transformations in high-alkali coal pyrolysis [PDF]
China Xinjiang high-alkali low-rank coal has the characteristics of low ash, high sodium content and high reactivity. Developing clean and efficient conversion technology for high alkali coal into high-value chemicals will have important strategic ...
Jifeng SHANG +5 more
core +1 more source
Rare Metals, EarlyView.ABSTRACT Efficient and durable bifunctional electrocatalysts are vital for scalable water electrolysis. Here, we realize cobalt‐vacancy (Covac) engineering in CoFeP supported on N,P‐codoped carbon nanocages (Co1‐vacFeP/NPC) through a simple route comprising a CoFe Prussian blue analog precursor, phosphidation–pyrolysis, tannic‐acid etching, and a ...
Yuan‐Liang Yuan +6 more
wiley +1 more source