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基于OBE理念的化工原理课程教学改革研究 被引量:2
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作者 刘剑 谭雄文 +1 位作者 彭钢 刘梦琴 《广州化工》 CAS 2023年第6期158-160,共3页
结合OBE教育理念和《化工原理》课程的特点,我们探索了《化工原理》产出导向学习教育模式,优化课程内容、构建课程大纲、改进教学方法和完善课程评价,建立“评价-反馈-改进”循环机制,有助于加强学生学习的主动性,提高学生分析和解决实... 结合OBE教育理念和《化工原理》课程的特点,我们探索了《化工原理》产出导向学习教育模式,优化课程内容、构建课程大纲、改进教学方法和完善课程评价,建立“评价-反馈-改进”循环机制,有助于加强学生学习的主动性,提高学生分析和解决实际工程问题的能力,最终实现毕业要求的圆满达成,为更好地培养出适应社会需求的化工类人才打下基础。 展开更多
关键词 OBE 化工原理 教学改革
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Synthesis,Crystal Structure,Spectroscopic Characterization,Thermal Stability and Magnetic Properties of a Dinuclear Copper(Ⅱ) Complex 被引量:2
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作者 LI Wei LI Chang-Hong +1 位作者 LI Heng-Feng tan xiong-wen 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 2015年第5期794-798,共5页
A new copper(Ⅱ) complex [Cu2(MNA)2(2,2‘-bipy)2]·2.5H2 O with methy-5-norbornene-2,3-dicarboxylic acid(MNA) and 2,2’-bipyridine as ligands has been synthesized in the mixed solvents of DMF and water.It ... A new copper(Ⅱ) complex [Cu2(MNA)2(2,2‘-bipy)2]·2.5H2 O with methy-5-norbornene-2,3-dicarboxylic acid(MNA) and 2,2’-bipyridine as ligands has been synthesized in the mixed solvents of DMF and water.It crystallizes in monoclinic,space group P 1,with a = 10.4191(11),b = 12.8883(13),c = 16.1114(16) A,α = 70.8090(10),β = 80.568(2),γ = 77.440(2)o,V = 1984.3(4) A^3,Dc = 1.551 g/cm^3,Z = 2,F(000) = 962,the final GOOF = 1.051,R = 0.0431 and w R= 0.0980.The crystal structure shows that the whole molecule consists of two independent dinuclear units,in which two copper ions are bridged by two μ2-η^1:η^0 3-carboxylate groups of MNA^2-.The coordination environment of Cu(Ⅱ) ion is Cu O3N2,giving a distorted square pyramidal geometry.The spectroscopic characterization,thermal stability and magnetic properties of the complex were investigated. 展开更多
关键词 copper(Ⅱ) complex spectroscopic characterization thermal stability magnetic properties
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Synthesis,Crystal Structure and Properties of a 1D Heteronuclear Cobalt-sodium Polymer with Bridging Ligand 2-(2-Hydroxy-3-methoxybenzylidene) Hydrazinecarbothioamide
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作者 LI Yu-Lina LI Wei +1 位作者 LI Chang-Hong tan xiong-wen 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 2018年第10期1651-1655,共5页
A new cobalt-sodium coordination polymer [CoNa(C_9H_9N_3O_2S)_2·H_2O]_2·C_2H_3N·H_2O(1) has been synthesized with cobalt chloride,2-(2-hydroxy-3-methoxybenzylidene)hydrazinecarbothio amide(L) an... A new cobalt-sodium coordination polymer [CoNa(C_9H_9N_3O_2S)_2·H_2O]_2·C_2H_3N·H_2O(1) has been synthesized with cobalt chloride,2-(2-hydroxy-3-methoxybenzylidene)hydrazinecarbothio amide(L) and sodium hydroxide.It crystallizes in the triclinic space group P1,with a = 9.972(4),b = 10.923(4),c = 13.489(5) ?,α = 108.005(10),β = 92.728(10),γ = 93.16(1)o,V = 1392.0(9) ?~3,Mr = 1151.95,Dc = 1.374 g/cm^3,Z = 2,F(000) = 592,the final GOOF = 1.126,R = 0.1091 and wR = 0.2412.Each unit molecule consists of two cobalt ions and two sodium ions bridged by four 2-(2-hydroxy-3-methoxybenzylidene)hydrazinecarbothio amide anions.The coordination environment of Co ion is CoO_2N_2S_2,giving a distorted octahedral geometry and the Na(1) ion is NaO_4N,giving a distorted square pyramidal geometry.The results show that 1 shows one strong intense fluorescence emission wavelength of 429 nm with an excitation wavelength of 376 nm,and the electron transfer of 1 is irreversible in electrode reactions. 展开更多
关键词 HETERONUCLEAR cobalt-sodium polymer electrochemical and fluorescent properties
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