Results 101 to 110 of about 2,020,061 (284)
International Journal of Applied Linguistics, EarlyView.ABSTRACT Grounded in social cognitive theory, this study investigated how high‐evidence factors jointly contribute to Chinese‐as‐a‐foreign‐language (CFL) speaking self‐efficacy. Data from 236 CFL learners in Beijing revealed a multifaceted pattern of associations.
Peijian Paul Sun +3 more
wiley +1 more source
, 2001 用一种可靠的方法合成了一种新的铂钌双金属卟啉{Cis-Pt(DMSO)RuPyPP(CO)}Cl_2。它将被用在燃烧电池中，作为阴极(氧电极 ...
曹国英, 唐倩, 衣宝廉, 韩明
core +1 more source
四川大学学报. 自然科学版, 2005 根据Ag2Se-Ga2Se3赝二元相图,对AgGa1-xInxSe2按同成分点配料,通过机械和温度振荡的方法合成出AgGa1-xInxSe2多晶材料.并对合成的多晶材料进行了XRD测试,与直接法合成的AgGa1-xInxSe多晶材料进行对比.结果表明,改进工艺后合成的AgGa1-xInxSe2多晶材料的图谱与标准PDF卡片相符,表明其是高纯单相的AgGa1-xInxSe2多晶材料.用新方法合成的AgGa1-xInxSe2多晶材料进行单晶生长,获得了完整的AgGa1-xInxSe2单晶体.实验结果表明 ...
朱伟林 +8 more
doaj
, 2002 一种从合成气和氨气直接合成低碳胺类的铬基催化剂，由活性组份和载体组成，其特征在于以Al2O3为载体，以Cr元素为主活性组分，以Zn、Mn、稀土元素的氧化物作改性剂；催化剂的各组分重量含量为：Cr2O3活性组分5～60％，改性剂1～30％。在本发明催化剂上，合成气和氨气可以高选择性地生成低碳胺类(一甲胺、二甲胺、三甲胺、乙胺和丙胺等)，而且主要是一甲胺 ...
王毅, 丁云杰
core
International Journal of Applied Linguistics, EarlyView.ABSTRACT Self‐directed Learning (SDL) is an important skill for learners of all ages and phases of life. Generative AI facilitates self‐directed second language (L2) learning by providing interactive, personalised access to online resources. However, existing research on AI‐assisted self‐directed L2 learning focuses on adult learners in higher ...
Qing Ma +4 more
wiley +1 more source
, 2008 一种纯硅和硅铝ITQ-13分子筛的合成方法，对于纯硅ITQ-13分子筛的合成，其特征在于以白炭黑为硅源；对于硅铝ITQ-13的合成，其特征在于以白炭黑为硅源，以异丙醇铝或九水合硝酸铝为铝源。该方法克服了以往合成方法难以直接合成硅铝ITQ-13分子筛且合成步骤繁琐、重复性差的缺点 ...
徐龙伢 +4 more
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International Journal of Applied Linguistics, EarlyView.ABSTRACT This study examined joint profiles of motivation and mindsets among 392 secondary school students in Hong Kong and their associations with basic psychological need satisfaction (BPNS), English learning anxiety, and English achievement. Latent profile analysis (LPA) identified four distinct profiles: extrinsic‐fixed, intrinsic‐growth, average ...
Jiatong Zhang, Barry Bai
wiley +1 more source
四川大学学报. 自然科学版, 2005 采用sol-gel方法预合成钙钛矿结构的PZT,采用固相法预合成MnSb2O6,然后用制得的PZT和MnSb2O6为原料,利用干压法和粉末电磁成型法成型,合成xPMnS-(1-x)PZN压电陶瓷,探讨了成型工艺对材料结构与性能的影响.结果表明粉末电磁压制法成型的样品致密度均达到了95%以上,性能均高于干压法制备的材料,当x=0.55时综合性能可达到最佳,分别为kp=0.46,Qm=391,tanδ=0.54%,ε3T3/ε0=1739,d33=347pC/N.
赵然, 周静, 魏长松, 陈文
doaj
, 2005 本发明公开了一种河蟹成蟹饲料的配方及用该配方制成河蟹成蟹配合饲料的方法。本发明的河蟹成蟹饲料配方由鱼粉、豆粕、次粉、玉米粉、多种矿物盐、墨鱼粉、油糠、甜菜碱、鱼油、多种维生素、蜕壳素、粘合剂、抗氧化剂和防霉剂组成,其制成河蟹成蟹配合饲料的方法为：将按饲料配方称重、在搅拌机中搅拌混合；同时加入蒸汽,制粒、脱水、冷却,制成河蟹成蟹配合饲料。用本发明制成河蟹成蟹配合饲料具有可诱使河蟹进食,适口性好,耐水泡时间长,河蟹生长快、饲料系数低等优点。用本发明的河蟹成蟹配合饲料饲养河蟹大眼幼体 ...
谭德清 +4 more
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International Journal of Applied Linguistics, EarlyView.ABSTRACT Drawing on social cognitive theory, this study examined the role of growth translation mindset (GTM) in linking AI‐mediated informal digital learning of English (AI‐IDLE) to translation performance among Chinese EFL learners. Quantitative data were collected from 378 college students, followed by 12 semi‐structured interviews.
Jin Liu +5 more
wiley +1 more source