Scattering properties of polluted dust in 1.6-μm wavelength

Three typical polluted dust particles （i.e., single coated dust, two-sphere/spheroid system, and coated dust with ag- gregate） including internal and semi-external mixtures are modeled, and their scattering properties at 1.6-μm wavelength are calculated by using the generalized multi-sphere Mie-solution （GMM） method. We investigate the influences of par- ticle size, morphology, and chemical composition on the scattering parameters of polluted dust particles. The analysis results demonstrate that the single scattering albedo of coated dust is much smaller than that of pure dust, especially for the spheroidal black carbon （BC） coated dust. When a dust particle semi-mixes with another aerosol particle to form a two-sphere/spheroid system, its scattering properties are much more sensitive to the size and species of monomers than the monomer shape. If an aggregated BC attaches to the coated dust, the scattering properties of whole particle mainly depend on the host particle （coated dust）.     

Beam dynamics simulations of the injector for a compact THz source

Terahertz radiation has broad application prospects due to its ability to penetrate deep into many organic materials without the damage caused by ionizing radiations. A free electron laser （FEL）-based THz source is the best choice to produce high-power radiation. In this paper, a 14 MeV injector is introduced for generating high-quality beam for FEL, is composed of an EC-ITC RF gun, compensating coils and a travelling-wave structure. Beam dynamics simulations have been done with ASTRA code to verify the design and to optimize parameters. Simulations of the operating mode at 6 MeV have also been executed.     

《发光学报》-EI核心期刊（物理学类；无线电电子学、电信技术类）

《发光学报》是中国物理学会发光分会与中国科学院长春光学精密机械与物理研究所共同主办的中国物理学会发光分会的学术会刊。该刊是以发光学、凝聚态物质中的激发过程为专业方向的综合性学术刊物。     

《发光学报》—EI核心期刊(物理学类;无线电电子学、电信技术类)

正《发光学报》是中国物理学会发光分会与中国科学院长春光学精密机械与物理研究所共同主办的中国物理学会发光分会的学术会刊。该刊是以发光学、凝聚态物质中的激发过程为专业方向的综合性学术刊物。《发光学报》于1980年创刊,曾于1992年,1996年,2000年和2004年连续四次被《中文核心期刊要目总览》评为"物理学类核心期刊",并于2000年同时被评为"无线电电子学、电信技术类核心期刊"。2000年获中国科学院优秀期刊二等奖。现已被《中国学术期刊(光盘版)》、《中国期刊网》和"万方数据资     

《发光学报》-EI核心期刊（物理学类；无线电电子学、电信技术类）

《发光学报》是中国物理学会发光分会与中国科学院长春光学精密机械与物理研究所共同主办的中国物理学会发光分会的学术会刊。该刊是以发光学、凝聚态物质中的激发过程为专业方向的综合性学术刊物。     

Semiparametric empirical likelihood estimation for two-stage outcome-dependent sampling under the frame of generalized linear models

Epidemiologic studies use outcome-dependent sampling （ODS） schemes where, in addition to a simple random sample, there are also a number of supplement samples that are collected based on outcome variable. ODS scheme is a cost-effective way to improve study efficiency. We develop a maximum semiparametric empirical likelihood estimation （MSELE） for data from a two-stage ODS scheme under the assumption that given covariate, the outcome follows a general linear model. The information of both validation samples and nonvalidation samples are used. What is more, we prove the asymptotic properties of the proposed MSELE.     

Synthesis ofa trimeric lignin model compound composed ofol-O-4 and β-O-4 linkages under microwave irradiation

A trimeric lignin model compound composed of α-O-4 and β-O-4 linkages was prepared by the microwave-assisted synthesis, which consisted of three steps： （a） the synthesis of 3-methoxy-4- benzyloxyacetophenone （2） from acetovanillone （1）, （b） the bromination of compound 2 to produce 3- methoxy-4-benzyloxy-α-bromoacetophenone （3）, and （c） followed by a nucleophilic substitution of compound （3） to obtain 3-methoxy-4-benzyloxy-α-（3-methoxy-4-（1-propenyl）phenol）-acetophenone （4）. The target product was characterized by MS, 1H NMR and 13C NMR spectroscopy. It was found that the trimeric compound synthesized can be used as a preferable lignin model compound because it contains guaiacyl structural unit （3-methoxy-4-hydroxy phenyl propane） linked by α-O-4 and β-O-4 linkages. In addition, under the conditions of microwave irradiation, the reaction time of each step is significantly reduced, and the selectivity of target product is greatly improved. The yields of each step and the overall sequence are 95.31%. 87.3%. 90.6% and 75.4% （95.31%× 87.3% × 90.6%）. respectively.     

高效液相色谱法同时检测祛痘类化妆品中12种禁限用物质

建立了反相高效液相色谱同时测定祛痘类化妆品中12种禁限用物质(依诺沙星、环丙沙星、氧氟沙星、林可霉素、克林霉素、克林霉素磷酸酯、氯霉素、氯霉素二醇物、磺胺甲口恶唑、甲硝唑、替硝唑、水杨酸)的方法。样品经甲醇与0.1 mol/L盐酸混合溶液(体积比1∶1)超声提取,采用ACEC18(250 mm×4.6 mm,5μm)色谱柱分离,以乙腈-0.025 mol/L磷酸三乙胺溶液二元流动相梯度洗脱,流速1.5 mL/min,柱温40℃,采用二极管阵列检测器双波长(210、277 nm)检测,外标法定量。林可霉素、克林霉素、克林霉素磷酸酯3种成分的线性范围为25～1 000mg/L,其他9种成分的线性范围为5～200 mg/L,相关系数均大于0.997。12种禁限用物质的方法检出限为5～50μg/g,平均回收率为88%～115%,相对标准偏差为0.4%～3.0%。该方法操作简便、准确、灵敏,适用于祛痘类化妆品中12种禁限用物质的测定。     

高锰酸钾溶液标准物质的研制

介绍高猛酸钾溶液标准物质的研制过程。对研制的溶液标准物质进行了均匀性和稳定性考察。结果表明,该标准物质均匀性良好,定值稳定期为6个月。用称量滴定法定值,定值结果为c(1/5 KMnO4)=0.100 7 mol/kg(k=2)。该标准溶液满足二级标准物质的技术要求,已被批准为国家级二级标准物质。     

《化学基本操作技术实验》

化学实验教材编写组编本书是适应化学实验教学改革的发展需要,构建“基本操作—物质合成—物性测试及表征—综合与设计实验”为主线的项目化实验教学体系;打破化学学科实验的边界,反映了化学实验内容层次性,让学生直观理解化学实验的全部概貌。化学基本操作技术实验全书共51个基本操作技术实验,涉及无机化学、分析化学、有机化学等三个部分基本操作技