Modulation in the spectral degrees of polarization and cross polarization of a stochastic electromagnetic beam through a one-dimensional compound photonic crystal

We design a one-dimensional compound photonic crystal constituted of a periodic arrangement of electromagnetic-induced transparency atomic vapor. It is shown that, when a stochastic electromagnetic beam propagates through the compound photonic crystal, the spectral degrees of polarization and cross polarization of the beam can be modulated by changing the parameters of the supercells of the compound photonic crystal.     

Analytical propagation expression of elliptical Gaussian beams through nonsymmetric systems with an elliptical aperture

A tensor form for describing approximately the elliptical aperture function is defined that can be expanded into a finite sum of complex Gaussian functions. An analytical propagation formula of elliptical Gaussian beams through nonsymmetric and paraxial optical systems with an elliptical aperture is obtained by using tensor method. A simple numerical example is given to illustrate for its applications.     

基于灰色关联分析的模糊评判模型与系统分析

本文用灰色关联系数来求解隶属度，提出一种类别标准已确定的综合评判模型与方法，并用于系统的排序分析．     

Finsler metrics with special curvature properties

In this paper, we discuss the relationship between the flag curvature and some non-Riemannian quantities of Finsler metrics of scalar curvature. In particular, we characterize projectively flat Finsler metrics with isotropic S-curvature.     

Fractional Fourier transforms of elliptical Hermite-cosh-Gaussian beams

A new kind of laser beams named the elliptical Hermite-sinusoidal-Gaussian beams (EHSGBs) is introduced and defined by use of tensor method, and the elliptical Hermite-cosh-Gaussian beam (EHChGB) can be regarded as special case of EHSGBs. The fractional Fourier transform (FRFT) is applied to treat the propagation of EHChGBs. An analytical expression for an EHChGB passing through an FRFT system is derived by using vector integration. Some numerical simulations are illustrated for the propagation properties of EHChGBs through FRFT systems.     

伽玛刀联合紫杉醇治疗高级别胶质瘤的临床研究

目的 探讨伽玛刀联合紫杉醇治疗术后复发的高级别胶质瘤的临床疗效及不良反应。方法 将73 例胶质瘤术后 患者分为联合治疗组（35 例）和伽玛刀组（38 例）。联合治疗组在伽玛刀治疗前2h 静脉滴注紫杉醇100mg/m2,伽玛刀组仅行伽玛刀治疗。所有患者伽玛刀治疗方案均采用50%剂量曲线包绕病灶,病灶中心剂量28~32Gy,周边剂量14~16Gy。结果 联合治疗组与伽玛刀组近期有效率分别为37.1%和39.5%,无统计学差异（P=0.838）;近期疾病控制率分别为97.1%和81.6%,两组间比较有统计学差异（P=0.041）;生活质量改善率分别为42.9%和42.1%,无统计学差异（P=0.948）;两组中改善及稳定的患者比例分别为97.1%和76.3%（P=0.010）;无进展生存率分别为57.1%和34.2%,两组间比较有统计学差异（P=0.049）;总生存率分别为17.1%和13.2%,组间比较无统计学差异（P=0.634）。治疗不良反应发生率两组比较无统计学差异（P=0.258）。结论 伽玛刀联合紫杉醇治疗能提高术后复发高级别胶质瘤患者的近期疾病控制率,提高临床症状稳定改善率,并能延长患者无进展生存期,改善生活质量。     

关于共形Berwald的Kropina度量(英文)

本文利用导航数据研究了共形Berwald的Kropina度量.首先利用导航数据刻画了Berwald Kropina度量.在此基础上,本文得到了Kropina度量是共形Berwald度量的一个充分必要条件.进一步,刻画了具有弱迷向旗曲率的共形Berwald Kropina度量的局部结构.     

加速老化试验对有机硅胶封装材料光学性质的影响

测试分析了2种有机硅胶封装材料在3种加速老化试验前、后的光谱透过率。结果表明,2种有机硅胶在硅太阳电池的工作波段的透过率都很高。经过130d的去离子水浸没后,2种硅胶的光谱透过率都没有变化;硅胶A仅在湿热测试中于300～400nm波段的透过率有稍许变化,而在热循环测试中其光学性质很稳定;硅胶B在两种测试中于300～450nm波段的透过率都有少许降低;不过,两种硅胶经老化试验后的紫外-可见光波段的透过率还是高于EVA的。其中硅胶B对湿气的吸收比硅胶A强,湿气可以散射入射光,进而在透过率测试时降低硅胶样品的透过率。     

Revisiting the Electroplating Process for Lithium-Metal Anodes for Lithium-Metal Batteries

Electroplating has been studied for centuries, not only in the laboratory but also in industry for machinery, electronics, automobile, aviation, and other fields. The lithium-metal anode is the Holy Grail electrode because of its high energy density. But the recyclability of lithium-metal batteries remains quite challenging. The essence of both conventional electroplating and lithium plating is the same, reduction of metal cations. Thus, industrial electroplating knowledge can be applied to revisit the electroplating process for lithium-metal anodes. In conventional electroplating, some strategies like using additives, modifying substrates, applying pulse current, and agitating electrolyte have been explored to suppress dendrite growth. These methods are also effective in lithium-metal anodes. Inspired by that, we revisit the fundamental electroplating theory for lithium-metal anodes in this Minireview, mainly drawing attention to the theory of electroplating thermodynamics and kinetics. Analysis of essential differences between traditional electroplating and plating/stripping of lithium-metal anodes is also presented. Thus, industrial electroplating knowledge can be applied to the electroplating process of lithium-metal anodes to improve commercial lithium-metal batteries and the study of lithium plating/stripping can further enrich the classical electroplating technique.