高校课程思政与思政课程同向同行,已成为高校教育教学改革的共识.结合"光电子技术"专业课程的特点,挖掘该课程所蕴含的优质思政教育资源,融入到课程教学目标、教学内容、教学方法的设计及教学全过程,以实现专业知识技能培养和人生价值塑造协同并进.
半导体物理是广东石油化工学院新能源科学与工程专业开设的专业基础课程之一,基于教学实践中存在的主要问题,结合地方性本科院校人才培养目标,探讨了从课程体系、教学内容、教学模式、考核方法、实践环节等方面进行的教学改革实践,充分调动学生学习的热情,提升对半导体物理知识的理解,提高工程实践能力和创新精神.
采用基于密度泛函理论(DFT)和Modified Becke-Johnson(MBJ)势方法计算了R3c-ZnTiO 3的电子结构和光吸收性质.计算结果表明本征R3c-ZnTiO 3吸收很少的可见光,S掺杂R3c-ZnTiO 3形成明显的S缺陷能级可以降低体系的带隙,促进可见光的吸收.随着S掺杂浓度增大的时候,对可见光吸收增强的效果更加的明显.计算的价带顶(VBM)和导带底(CBM)电荷分析表明S掺杂R3c-ZnTiO 3时S原子占据主要的VBM电荷,同时容易发生VBM的S原子电荷向CBM的Ti原子电荷跃迁,拓展了R3c-ZnTiO 3在光伏半导体方面的应用.
采用密度泛函第一性原理方法,研究了三种不同官能团修饰对硅锗<111>方向纳米线内部键长分布的不均匀性及能带影响,计算结果表明CH3修饰加剧了键长分布不均性,与其它两个官能团相比,键长峰值弱化,键长范围扩大,也就是键长发生了再分布,F修饰对键长表现出了拉力效应,但并没有引起键长的再分布.同时,通过计算电子性质,以H修饰纳米线为参考,因不同官能团修饰对键长不均匀性的影响不同,使能带Z点位置下移幅度不同,CH3修饰纳米线下移幅度最大,F次之,H修饰的下移幅度最小,这为利用不均匀性调控电子结构提供了理论依据.
The Hamilton equation of the ions Be2 + (z =4) and B3 + (z =5) including shielding effect parameter σ were established.A combination of the ground state 1 s and the excited state ns (n =2,3,…) wave functions of two hydrogen-like atoms as the two electrons' wave function with effective nuclear charge number of z * =z-σ was chosen as the ground state approximate wave functions of the ions Be2+ and g3+.The shielding parameters σ are determined as σ =0.56350197 for Be2+ and σ =0.525070444 for B3+ respectively by parameter perturbation method.The calculation results show that the error of the ground state energy of the ions Be2 + in third order approximation or B3 + in fourth order approximation with the perturbation method is △E ≈ 10 4 ~ 10-5 a.u.in comparison with the experimental values.
在微扰论的基础上引入屏蔽参数σ,建立含有屏蔽参数σ的类氦离子N5+和O6+的哈密顿方程.以有效核电荷数为z*=z-σ的类氢原子基态1s和激发态ns(n=1,2,3,…)组合的双电子波函数,作为类氦离子N5+和O6+的基态近似波函数.根据类氦离子N5+和O6+的基态能量的实验值,通过求极值的方法确定合适的屏蔽参数σ,由此计算类氦离子N5+和O6+的基态能量.结果表明,应用参数微扰法计算类氦离子N5+和O6+基态能量的理论值与实验值的误差为△E≈10-4~10-5a.u..
根据参数微扰法理论,选择有效核电荷数为z*=2-σ的两个类氢原子的ns态的波函数的组合,作为氦原子基态的1级至4级近似波函数.应用参数微扰法计算了氦原子基态4级近似能量.计算结果表明参数微扰法得到的氦原子基态4级近似能量与实验值的误差为△E=0.004922028es2/a0.
本研究系统地研究了金丝桃素(HY)的紫外-可见吸收光谱、光漂白和荧光光谱特性,为HY的临床应用提供一定的参考.实验测量了不同浓度HY-二甲基亚砜溶液的紫外-可见吸收光谱,结果显示HY在可见光范围内存在多个吸收峰,其中,594nm处的吸收最强,这表明594nm为HY光动力治疗的首选光源波长;HY的光漂白特性研究表明,HY的初始浓度越高,光漂白所需的时间越长;HY的荧光光谱研究表明,荧光光谱在可见光范围内也存在多峰结构,其中,643 nm处的荧光峰最强且半峰宽最窄,因此,在光动力诊断中,采用643 nm荧光发射能大大提高检测的灵敏度.
The Hamiltonian containing shielding effect parameters was established by considering the helium-like atom electron nuclear shielding effect and transformation was made to allow perturbation potential operator in Hamiltonian to meet the conditions of perturbation method .The second order approximation of ground state energy of Helium-like atom and effective nuclear charge was calculated by parameter perturbation method .The results show that the ground state energy calculated is quite close to the experimental value .It indicates that parameter perturbation provides us a new approach to study the multi-electron atomic levels and the fine structure of atomic levels .
In order to improve the light absorption in dye -sensitized solar cells anode ,the SiO2 particles sub-micro are mixed with TiO2 nanocrystal anode ,which is obtained by wet grinding method .Experiments show that ,using TiO2 nanocrystal anode film prepared by this method ,light scattering is enhanced .After dyeing ,light absorption has also been strengthened .At the same time ,by using the anode as-sembly ,short current can be increased by 15% .
在高校应用型专业“3+1”培养模式下,最后一年的实习期对学生的职业成长与就业等有着重要的意义,而实习期的稳定性是学生实习成效的保障。文章从职业嵌入度理论的三个核心内容分析了大学生实习过程中的选择、职业适应及成效三个方面易产生的问题,并提出了改善大学生实习期稳定性的建议与方法。
大学毕业生必须具备一定的创新能力.在师范物理专业的办学中,我们采用“课堂十项目”创新能力的培养模式.除开贯穿全程的第一课堂教学之外,以第二课堂项目推动的方式,加强创新能力的培养.
A novel series of p38 MAP kinase inhibitors with high selectivity for the p38α isoform over the other family members including the highly homologous p38β isoform has been identified. X-ray co-crystallographic studies have revealed an unprecedented kinase binding mode in p38α for representative analogs, 5c and 9d, in which a Leu108/Met109 peptide flip occurs within the p38α hinge region. Based on these findings, a general strategy for the rational design of additional promising p38α isoform selective inhibitors by targeting this novel binding mode is proposed.
本文在考虑氢原子轨道运动磁矩与磁场之间、自旋磁矩与磁场之间和感生磁矩与外磁场之间的相互作用的基础上,根据角动量和球谐函数的性质,应用简并态微扰方法研究了在中等强磁场中氢原子的能级,给出了计算中等强磁场中氢原子的一级近似能级的方法,具体计算了23.5126≤B≤1.881728×104T范围内氢原子n=2的各能级的数值,结果与有关文献给出的理论计算值是相近的,表明本文所给出的方法是简单的、计算结果是正确的.
A rubrene (Ru) derivative, 2-formyl-rubrene was synthesized and was used as reddopant in N,N'-bis- (1-naphthyl)-N, N '-diphenyl-1, 1'-biphenyl- 4, 4 '-diamine (NPB) host in organic light-emitting devices (OLEDs) that offers an emission peak at about 598nm and a current efficiency of 2. lcd/A. The red emitter was also used to fabricate a white OLED (WOLED), in which 2-formyl-rubrene, tris (8-hydroxyquinoline) alumi- num (Alq3) and NPB contribute to the red, green and blue emissive components respectively. As a result, a high color rendering index of 89.8, CIE coordinates of (0.33, 0.33) at llV as well as a maximum luminance of 5000cd/m2 and a luminance efficiency of 4.7cd/A were obtained. The performances suggest its potential appli- cations for solid-state lighting. Also, the design and electroluminescent processes of the WOLED based on 2- formyl-rubrene were also discussed.
The synthesis, structure-activity relationships (SAR) and biological evaluation of thiazole based tricyclic inhibitors of IKK2 are described. Compound 9 was determined to be orally efficacious in a murine model of rheumatoid arthritis.
Pyrrolo[2,1-f][1,2,4]triazine based inhibitors of p38α have been prepared exploring functional group modifications at the C6 position. Incorporation of aryl and heteroaryl ketones at this position led to potent inhibitors with efficacy in in vivo models of acute and chronic inflammation.