火焰原子吸收光测定合成羰基镍残渣中高含量的铜钴镍铁

本文研究了用火焰原子吸收光谱法测定合成羰基镍残渣中高含量Ｃｕ，Ｃｏ，Ｎｉ，Ｆｅ，系统地试验了测定条件和Ｈ２ＳＯ４浓度，Ｓｉ含量对测定的影响，以及Ｃｕ，Ｃｏ，Ｎｉ，Ｆｅ之间相互干扰情况，研究了合适的溶样方法，选择理想了的分析谱线等，有效地消除了共存元素的干扰，实现了在同一溶液中测定合成羰基镍残渣中的高含量多元素，方法简便，快速，准确。     

塑料成型工艺实习CAI课件的开发

针对当前学生实习面临的困难，以Authorware为开发工具，编制了塑料成型工艺实习CAI课件，整个软件图文并茂，图像，动画，解说，音乐相结合，形象地介绍了塑料各种成型工艺的主要原理，生产设备，工艺流程和相关产品，应用本软件学生可以进行模拟实习，该软件激发了学生学习的兴趣，提高了实习质量。     

稀土抛光粉的生产及应用

综述了稀土抛光粉的各种制造工艺及其在玻璃抛光领域的应用现状，以稀土抛光粉不同的化学成分，粒度，用途等对稀土抛光粉进行了归纳分类，介绍了国内外稀土抛光粉生产企业的产生规律，产品特点，对国内外稀土抛光粉的制备工艺流程进行了归纳，阐述了稀土抛光粉的抛光工艺及抛光机理，重点讨论了稀土抛光粉的应用领域，预测了稀土抛光粉市场的未来，对稀土抛光粉的应用进行了展望。     

加强基础不断更新 培养能力提高素质──有机化学实验课改革体会

几年来，对有机化学实验课进行了改革探索，加强了基础训练，设立以常量、小量－半微量序列实验的合成训练，增加了应用性化合物的合成，保证了实验教学质量，积累了一些经验，受到学生的欢迎。     

标准强化竹豆型营养保健米膳微量元素模式营养评分研究

测定了竹豆营养保健米的Ｚｎ，Ｃｕ，Ｆｅ，Ｍｎ，Ｓｅ含量，作了营养评分，并对该型保健米的科学配膳进行了研究，为改革主食营养结构，防治疾病提供了依据。     

主成分分析同时单点R滴定法研究

将主成分分析用于单点Ｒ滴定法中，同时测定了镍矿中Ｎｉ，Ｃｕ，Ｃｏ含量，讨论了方法原理，指定电位的选择，建立了主成分分析常数矩阵，对２０个模拟样和矿样进行了分析，均获得满意结果。     

2,5—二取代—1,3—4—恶二唑和N,N‘—二酰基肼化合物的合成与生物活性

合成了１８种新的对称与不对称的２，５－二取代－１，３，４－恶二唑及Ｎ，Ｎ“＇－Ｆ二酰基肼化物，用元素分析，红外光谱，核磁氢谱和质谱确定了其结构，并对它们的杀虫，抗菌活性进行了测试，发现了数个具有较强生物活性的化合物。     

一种基于共振角度测量的小型SPR传感器

合成了一种光学有机玻璃并进行了性能表征，用其制作了一种不规则六面体光学棱镜，采用这种光学棱镜，以发光二极管为光源，线阵CCD为检测器，组装了一种共振角度同时测量的小型SPR传感装置，讨论了影响该传感器灵敏度，分辨率和线性范围的因素，将其用于乙醇和磷酸二氢钾的检测，获得了较好的结果。     

神经群结构,算法与X射线荧光光谱分析研究

研究了一种多组分型神经群网络结构，根据多元体系各变量间的内在规律，可在神经网络中由相互间具有紧密联系的一些神经元的集合形成群结构，采用这种全连接方式的神经群网络结构，减少了连接权重，剔除了噪音，从而增强了模型稳定性，提高了Ｘ射线荧光光谱预测准确度，显著增加了神经网络的外推预测能力，降低了训练模型所需的标样数。     

基于OBE和EHS理念的制药过程安全与环保课程体系建设

“制药过程安全与环保”为制药工程专业本科生必修核心课程，但其课程体系不完善，基于OBE和EHS理念，从课程目标、课程内容、课程思政、教材、教学方法、课程考核与评价方法等方面对该课程进行了建设和完善，取得了一些创新性成果与经验，制定了教学目标，创新性地设置了课程内容，开展了课程思政，主编了教材，提出了适宜的教学方法，建立了课程考核与评价方法，可以为全国其他高等院校类似课程的教学与建设提供有益的借鉴。     

Ultra‐performance liquid chromatography of amino acids for the quality assessment of pearl powder

Pearls have been widely used as a traditional medicine, in cosmetics, and as a health food supplement in China since ancient times. However, the identification and quality assessment of pearl powder have been challenging tasks because of the similar morphological features and chemical composition of its common adulterants, especially conch powders. In this study, ultra‐performance liquid chromatography was combined with pre‐column derivatization to rapidly quantify 14 amino acids in pearl powder and its analogues. Based upon the quantification results, a quality criterion of a total amino acid content of not less than 1.10% was proposed for pearl powder. Principal component analysis indicated that leucine and phenylalanine were the amino acids characteristic for distinguishing between pearls and nacres. The area ratio of leucine to phenylalanine was demonstrated to be an effective diagnostic marker to discriminate freshwater cultured pearls, natural seawater pearls, and nacres. The proposed method, involving both the qualitative and quantitative aspects, was subsequently applied to quality assessment of pearl powders purchased commercially in various parts of China; eight out of 18 batches were deemed authentic and unadulterated. In the future, this analytical process should play a significant role in standardizing and providing quality control to the pearl powder market.     

珍珠形胆结石的红外光谱和扫描电镜分析

磁疗获得的珍珠形胆结石是罕见的病例,作者利用红外光谱、扫描电子显微镜及Ｘ射线能谱对该胆结石进行了观察和研究。结果表明该胆结石的主要成分为胆固醇,并混有少量的蛋白质和无机钙盐,说明珍珠形胆结石虽然和珍珠具有相似的形貌,但组成是完全不同的。根据扫描电子显微镜的照片,作者推测结石的珍珠外形可能是因为片状的胆固醇分子形成胆甾型晶体而形成的。     

马氏珠母贝各部位及其插核珍珠层微量元素的含量及分布

用电感耦合等离子体发射光谱仪检测了马氏珠母贝5个部位及其人工插核珍珠层中的11种微量元素的含量。结果表明,人工插核珍珠层中Se、Si、Zn含量,角质层中B、Co、Fe、Mn含量,内脏囊中P含量,闭壳肌中Cu、Cd含量,人工插核珍珠层、角质层、闭壳肌中V含量较其他部位高;各部位w(Cu)/w(Zn)均小于0.50,其中人工插核珍珠层的w(Cu)/w(Zn)特别小,为0.05。为进一步加工利用和揭示其药用价值提供基础信息。     

Bacteria and cancer cell pearl chain under dielectrophoresis

In this work, we aim to observe and study the physics of bacteria and cancer cells pearl chain formation under dielectrophoresis (DEP). Experimentally, we visualized the formation of Bacillus subtilis bacterial pearl chain and human breast cancer cell (MCF-7) chain under positive and negative dielectrophoretic force, respectively. Through a simple simulation with creeping flow, AC/DC electric fields, and particle tracing modules in COMSOL, we examined the mechanism by which bacteria self-organize into a pearl chain across the gap between two electrodes via DEP. Our simulation results reveal that the region of greatest positive DEP force shifts from the electrode edge to the leading edge of the pearl chain, thus guiding the trajectories of free-flowing particles toward the leading edge via positive DEP. Our findings additionally highlight the mechanism why the free-flowing particles are more likely to join the existing pearl chain rather than starting a new pearl chain. This phenomenon is primarily due to the increase in magnitude of electric field gradient, and hence DEP force exerted, with the shortening gap between the pearl chain leading edge and the adjacent electrode. The findings shed light on the observed behavior of preferential pearl chain formation across electrode gaps.     

四会市140名婴儿服食真珠钙效果观察

对四会市１４０名婴儿服食真珠钙的效果进行了调查，结果表明，补钙后０￣６个月和０￣１２个月的婴儿的体重与身高均明显高于对照组，两者有明显差异，Ｐ〈０．０１。     

纳米Cu2O/珍珠贝壳复合光催化材料的制备及其在有机染料处理中的应用

将珍珠贝壳废弃物活化并作为载体,应用原位水解法制备出Cu2O/珍珠贝壳复合材料.运用X射线衍射、X射线光电子能谱、扫描电镜、紫外-可见漫反射吸收光谱对复合材料进行表征.用活性大红染料B-3G水溶液作为模拟废水评价复合材料在可见光下的催化性能.结果表明,负载的Cu2O呈椭球形,理论平均粒径为16.8nm.复合材料对紫外和...     

珍珠片剂中钙含量的测定

采用络滴定法对复方珍珠片剂中的钙含量进行了测定,相对标准偏差０．０２％,回收率９９．８％,方法简便易行,重现性好。     

Pearl chain formation of nanoparticles in microelectrode gaps by dielectrophoresis

The integration of molecular structures into microscopic electrode arrays is achieved by dielectrophoresis of gold nanoparticles in electrode gaps. Using microelectrodes realized by photolithography, we demonstrate here the generation of pearl chain arrangements of nanoparticles in structures accessible for standard technologies. To preserve the individual particle structures in the final nanowire arrangement, various strategies were employed. An electrical characterization of the pearl chains yielded an Ohmic behavior. The effect of increased current on these structures is studied at the ultramicroscopic level.     

红珍珠降糖胶囊中微量元素营养研究

红珍珠降糖胶囊是具有显著降低血糖水平,确定糖尿病患者康复的绿色营养保健食品。通过红珍珠降糖胶囊中Cr、Mn、Cu、Zn、Mg等微量元素的分析测试以及与青海小麦、膳食日摄取量等对比研究,表明红珍珠降糖胶囊富含涉及糖尿病的微量元素,在降低血粮糖水平方面具有十分重要的营养学、功效学作用和意义。     

Formation of DNA pearl‐necklace structures on mica surface governed by kinetics and thermodynamics

Polyelectrolytes (PEs) possibly occur in the form of a pearl‐necklace structure in poor solvents. This structure, characterized by the form of segregated beads connected by narrow strings, has been extensively studied by scaling analysis and computer simulation, and was believed to be formed by the Rayleigh instability mechanism. However, the structure has not been experimentally well studied, and a complete experimental picture on the necklace formation is still not available. In this study, pearl‐necklace structures of DNA induced by different condensing agents are observed by atomic force microscopy. The results show that the formation of a pearl‐necklace conformation is highly dependent on kinetic factors such as incubation time and thermodynamic factors including the concentration and condensing ability of the agent. If the incubation time is sufficiently short, this conformation can exist as an intermediate state of the DNA coil–globule transition. When agents with weaker crowding effect or screening ability are added, the structure appeared to be thermodynamically stable. The same effect was observed in rather low concentrations of agent. A rods‐on‐a‐string structure, unlike the common characterized spherical beads‐on‐a‐string conformation, was observed and was believed to result from the stiffness of DNA. © 2017 Wiley Periodicals, Inc. J. Polym. Sci., Part B: Polym. Phys. 2017 , 55, 971–979