Results 21 to 30 of about 795,230 (184)
Gongye shui chuli, 2006 在水温分别为5、9.7、14.9、19.7℃的条件下，应用折流式水解反应器（ABR）对印染废水进行水解试验。结果表明，提高水温可增大COD和色度的去除效率，相应的氧化还原电位（ORP）变小，pH升高，水解程度加深。水温5℃时，水解效果较差；水温在10~20℃内，水解效果相对较好。此外，通过动力学分析，在5~20℃内，该反应器中有机物降解服从一级动力学，其温度系数为24.07 kJ/mol。
吴慧芳 +4 more
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Advancing conservation breeding programs for marine invertebrates
Conservation Biology, EarlyView.Abstract In the face of ecosystem change and biodiversity loss caused by climate change and other stressors, conservation breeding, or captive breeding, with the aim of reintroduction for wild population recovery, is an emerging tool for preventing species’ extinction and rehabilitating ecosystems.
Elora H. López‐Nandam +3 more
wiley +1 more source
Gongye shui chuli, 2011 分别采用电解、电解+水解酸化、水解酸化+好氧、脱色絮凝+水解酸化+好氧工艺处理河北吉藁化纤有限公司的棉浆原液废水（COD、色度高达4 484 mg/L、1 250 倍），并分别用MD-02 脱色剂和次氯酸钠处理该公司污水处理厂的出水（COD、色度分别为611.2 mg/L、500 倍）。试验结果表明：电解工艺可较大幅度地降低废水的色度，去除率达60%～72%；电解+水解工艺对色度的去除效果较为显著；常规的水解+好氧组合工艺对色度只有约23.2%的去除率， 显示出常规生化处理对棉浆废水色度去除能力的局限性；
王庆 +5 more
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International Journal of Applied Linguistics, EarlyView.ABSTRACT Research on English‐Medium‐Instruction (EMI) highlights inadequate support for students transitioning from L1‐medium‐instruction to EMI. To date, little research has focused on how L2 students’ adaptation to an EMI environment influences their L2 learning motivation (LLM).
Kevin W. H. Tai
wiley +1 more source
International Journal of Applied Linguistics, EarlyView.ABSTRACT The study investigated how writing motivation and self‐regulated read‐to‐write (SRL‐R2W) strategy use was related to writing performance and how the relationship between motivation and SRL‐R2W strategy use varied among different writing performance groups.
Huixuan Zhou +3 more
wiley +1 more source
Shuitu Baochi Xuebao, 2019 以紫色土为研究对象，通过室内重塑土试验，采用多元回归方程和曲面响应等分析方法，研究容重和含水率对紫色土崩解特性的影响。结果表明：（1）在相同容重下，崩解量随着含水率的增加而减小，不同含水率的土样崩解时间有所不同；土样完全崩解时间总体上随着含水率的增加而延长，且崩解量主要集中在崩解阶段前3 min。（2）在相同含水率下，崩解量随着容重的增加而减小，土样完全崩解时间总体上随容重的增大而延长，且崩解量主要集中在前4 min。（3）在相同容重和含水率下，土样崩解速率均随着容重和含水率的增大而减小；较之容重 ...
李敬王, 陈林, 史东梅, 张佳宝
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The Development and Validation of the Chinese Vocabulary Levels Test
International Journal of Applied Linguistics, EarlyView.ABSTRACT In response to the increasing need for effective Chinese vocabulary assessments, this study developed the Chinese Vocabulary Levels Test (CVLT), a test designed for intermediate‐level Chinese as a second or foreign language (CSL/FL) learners, based on the vocabulary lists (levels 4–6) from the Chinese Proficiency Grading Standards for ...
Shiwei Qi, Ailan Fu
wiley +1 more source
Gongye shui chuli, 2004 利用聚丙烯腈在碱性条件下水解为含有酰胺基团和羧酸基团的聚电解质的反应,通过控制腈纶丝水解时间和条件,使水解度处于最佳范围内,所得到的水解产物对废水有最佳的处理效果,成为价格低廉,性能优越的混凝剂。
范敏, 周迟骏
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Policy Studies Journal, EarlyView.Abstract We examine whether and how public participation in policymaking contributes towards fostering stakeholder support for policy proposals formulated in the bureaucratic arena. We explain how key markers of procedural fairness describing both the participation process and policymakers' presentations of it during the decision justification stage co‐
Adriana Bunea, Idunn Nørbech
wiley +1 more source
苯并氮杂冠醚-15-冠-5 Schiff碱钴(Ⅱ)配合物催化PNPP水解研究
四川大学学报. 自然科学版, 2008 在pH7.0和25℃下,研究了三种带有苯并氮杂冠醚-15-冠-5侧基的Schiff碱钴(Ⅱ)配合物CoL1,CoL2和CoL3,作为模拟水解金属酶催化羧酸酯水解的作用.通过对水解反应体系的特性吸收光谱的分析,提出了PNPP的催化水解的机理,并在此机理上建立了PNPP催化水解的动力学数学模型.讨论了三种Co(Ⅱ)配合物催化水解PNPP的性能.
胡伟, 李建章
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