生物转化法生产L－苹果酸的研究（Ⅰ）──富马酸酶产生菌株的筛选

经对３０余份采自不同地区土样的菌种筛选，得到２０株可将富马酸转化为Ｌ－苹果酸的菌株，其中尤以Ｇ（０４）株的转化活力最高。对该菌株的较佳转化条件研究表明：较适的转化温度为３７℃，基质初始ｐＨ值为７．５。菌体经０．２％胆酸３８℃处理２０ｈ，可使富马酸转化率较未处理的对照提高７４．３％。另外，采用０．２％胆酸或０．０６％ＴＰＣ处理菌体，均可在转化反应中抑制琥珀酸副产物的形成。     

一种解决乳品厂喷雾干燥物料粘壁问题的方案

本文介绍了乳品厂喷雾干燥物料粘壁的机理、危害以及解决粘壁问题的现状,提出了多段气幕封壁法解决粘壁问题的方案、工作原理、结构及理论计算方法,有助于解决乳品厂生产运行中多年困惑问题。     

含豆渣食品的研究

豆渣含有丰富的食物纤维，本试验将豆渣经过脱腥细化处理，制成湿豆渣糊和干豆渣粉，制成含豆渣的桃酥、面条、猪肉丸子。证明添加一定量的豆渣不会影响这些产品的感官质量，并可提高食品中食物纤维的含量。     

柚子果皮的综合利用

利用正交实验法地色素的提取，果胶的提取和果胶的沉淀进行了试验，得出了最佳工艺条件。最后得到了柚皮精油，柚皮黄色素和果胶三种产品。     

国内首套双容器KAMYR连蒸系统的运行

介绍了国内首套双容器ＫＡＭＹＲ连蒸系统的特点，总结了该系统生产运行控制的关键环节，对其中筛选部分技术改造的必要性进行了阐述，并分析、总结了技改的成功经验及其显著效果。     

DC offset calibration method for zero-IF receiver removing the PGA-gain-correlated offset residue

This paper presents a novel DC offset calibration method for the zero-IF (intermediate frequency) receiver that removes the PGA-gain-correlated offset residue. The conventional calibration method usually uses the classic input/output referred offset model, in which the receiver IF programmable gain amplifiers (PGAs) have offset sources that varies a lot with different gain settings. Consequently, the conventional calibration method needs to generate the calibration code at each gain step and requires a huge look up table (LUT) to store the calibration values. This paper presents a new DC offset model which is gain non-correlated, by analyzing two types of commonly used PGA. Based on the new model, a LUT-free single-step DC offset calibration method in together with the implementation circuit is designed. The proposed method has been verified on a practical zero-IF receiver circuit in a standard 0.18 μm CMOS technology through the Monte Carlo (MC) simulation. The simulation results show that the receiver IF output offset residue after calibration using the proposed method is reduced to below 12 mV, in contrast to 200 mV by the conventional method.     

Electromagnetic field of a horizontal electric dipole buried in a medium covering one-dimensionally anisotropic medium

The electromagnetic fields of a horizontal electric dipole buried in a medium covering one-dimensionally anisotropic medium are studied. There are three media, one-dimensionally anisotropic medium covered with a dielectric under the air. The electromagnetic field components are complex because of the multiple reflections from the up and down boundaries. The electromagnetic field components between air and one-dimensionally anisotropic medium are given, the trapped surface waves and lateral waves along the dielectric-anisotropic medium boundary are computed. The results have some practical applications in the communication in sea or lake above one-dimensionally anisotropic earth or sediments.     

New wide-bandgap organic donor and its application in UVB sensors with high responsivity

A triarylamine-containing fluorene derivative (FP) with wide bandgap and excellent thermal stability was synthesized and used as electron donor to construct planar heterojunction organic ultraviolet sensor (UVS), while bis(4-(4,6-diphenyl-1,3,5-triazine-2-yl)phenyl)diphenylsilane (NSN) was used as electron acceptor. The UVS ITO/PEDOT:PSS/FP/NSN/LiF/Al showed sensitive visible-blind response to UV illumination from both ITO and cathode sides. When no bias applied, the peak responsivity to UV light through ITO and cathode side was 47 and 33 mA/W, respectively. To the irradiation from the semitransparent Al side, the most sensitive response range covers the UVB region. Under a bias of ?4 V, the peak responsivity at 300 nm reaches 473 mA/W.     

A star-shaped oligothiophene with triphenylamine as core and octyl cyanoacetate as end groups for solution-processed organic solar cells

A new star-shaped D–π–A molecule with triphenylamine (TPA) as core and donor unit, octyl cyanoacetate (CA) as end group and acceptor unit, and 2,2′-bithiophene vinylene (bTV) as π bridge, S(TPA-bTV-CA) was designed and synthesized for the application as donor materials in solution-processed bulk-heterojunction organic solar cells (OSCs). The compound is soluble in common organic solvents. The thermal, optical and electrochemical properties of the star molecule were studied. The OSC devices were fabricated by spin-coating the blend solution of the molecule as donor and PC₇₀BM as acceptor (1:3, w/w). The OSC device based on S(TPA-bTV-CA)/PC₇₀BM demonstrated a high open circuit voltage of 0.91 V, a short circuit current density of 4.64 mA/cm², a fill factor (FF) of 50%, corresponding to a power conversion efficiency of 2.1%, under the illumination of AM 1.5, 100 mW/cm².     

Distributed online outlier detection in wireless sensor networks using ellipsoidal support vector machine

Low quality sensor data limits WSN capabilities for providing reliable real-time situation-awareness. Outlier detection is a solution to ensure the quality of sensor data. An effective and efficient outlier detection technique for WSNs not only identifies outliers in a distributed and online manner with high detection accuracy and low false alarm, but also satisfies WSN constraints in terms of communication, computational and memory complexity. In this paper, we take into account the correlation between sensor data attributes and propose two distributed and online outlier detection techniques based on a hyperellipsoidal one-class support vector machine (SVM). We also take advantage of the theory of spatio-temporal correlation to identify outliers and update the ellipsoidal SVM-based model representing the changed normal behavior of sensor data for further outlier identification. Simulation results show that our adaptive ellipsoidal SVM-based outlier detection technique achieves better detection accuracy and lower false alarm as compared to existing SVM-based techniques designed for WSNs.