构建综合防治技术体系 有效控制家蚕微粒子病

本文对玉林市蚕种场近年来通过建立安全、稳定的原蚕基地,建立蚕种生产预检体系,净化生产环境,分区饲养、分户制种,正确使用防微灵等微粒子病综合防治体系,有效地控制了微粒子病的做法和经验进行了总结。

浅析历史教学中“微课”体系的构建

我国经济发展迅猛，在科技、教育、通讯等各个方面与之前相比都有了很大的进步和提高，这为我国的教育事业和人才培养提供了很大的便利条件，逐渐将“开放、共享”作为教育的主要理念和发展方向。“微”教学是一个新时代发展的产物，也是时代发展进步的特征，“微课”逐渐从小学课堂逐渐进入大学课堂，在高校的教育中逐渐取得了进步性成果。学生是微课的主要参与者和主体，教师作为教育的主要工作者，微课能否取得成果关键在于教师的教学水平。“微课”教学也对我国今后的教育事业起着重要的指导作用。

高校学生生活园区一站式“微育人”体系建构研究

高校学生生活园区是大学生思想、情感和价值观念交流的一个主要场所,也是高校各管理部门协同育人的一个重要物理空间载体。通过“四进”学生生活园区一站式“微”教育、管理和服务,把领导队伍、思政队伍、管理队伍和服务队伍等学校主体力量,下沉到学生生活的物理空间中去,让党团组织进园区、思政教育进园区、心理健康教育进园区、后勤生活服务进园区,打造体现思政教育规律、紧贴育人实际需求、充满生机活力的高校学生生活园区一站式“微育人”体系,使高校学生生活园区成为学生党建前沿阵地、协同育人实践领地、平安校园样板高地。

SIMULATION AND PERFORMANCE ANALYSIS OF NETWORK ON CHIP ARCHITECTURES

The network on chip（NoC）is used as a solution for the communication problems in a complex system on chip（SoC）design.To further enhance performances,the NoC architectures,a high level modeling and an evaluation method based on OPNET are proposed to analyze their performances on different injection rates and traffic patterns.Simulation results for general NoC in terms of the average latency and the throughput are analyzed and used as a guideline to make appropriate choices for a given application.Finally,a MPEG4 decoder is mapped on different NoC architectures.Results prove the effectiveness of the evaluation method.

An Air-Breathing Micro Direct Methanol Fuel Cell with 3D KOH-Etched Cathode Structure

A micro direct methanol fuel cell （μDMFC） using MEMS technology is reported. The prototype features a unique 3D air-breathing cathode structure fabricated using KOH etching and double-side lithography. The optimization of the MEMS fabrication process is analyzed. The experimental results show the prototype generates a maximum power density of 2.52mW/cm^2 at room temperature. This performance is better than the published resuits of other silicon-based passive μDMFCs. Moreover,it is comparable with that of our previous active μDMFCs which require an external pump, certificating the feasibility of this new configuration.

SS-SERA:An improved framework for architectural level soft error reliability analysis

Integrated with an improved architectural vulnerability factor （AVF） computing model, a new architectural level soft error reliability analysis framework, SS-SERA （soft error reliability analysis based on SimpleScalar）, was developed. SS-SERA was used to estimate the AVFs for various on-chip structures accurately. Experimental results show that the AVFs of issue queue （IQ）, register update units （RUU）, load store queue （LSQ） and functional unit （FU） are 38.11%, 22.17%, 23.05% and 24.43%, respectively. For address-based structures, i.e., levell data cache （LID）, DTLB, level2 unified cache （L2U）, levell instruction cache （LII） and ITLB, AVFs of their data arrays are 22.86%, 27.57%, 14.80%, 8.25% and 12.58%, lower than their tag arrays＇ AVFs which are 30.01%, 28.89%, 17.69%, 10.26% and 13.84%, respectively. Furthermore, using the AVF values obtained with SS-SERA, a qualitative and quantitative analysis of the AVF variation and predictability was performed for the structures studied. Experimental results show that the AVF exhibits significant variations across different structures and workloads, and is influenced by multiple microarchitectural metrics and their interactions. Besides, AVFs of SPEC2K floating point programs exhibit better predictability than SPEC2K integer programs.

Phase Behavior of Sodium Dodecyl Sulfate-n-Butanol-Kerosene-Water Microemulsion System

Experiments were carried out to investigate the influences of cation from electrolytes and acidity/alkalinity on the phase behavior of sodium dodecyl sulfate-n-butanol-organics-water （with electrolytes） microemulsion sys-tem. The organics used is commercial kerosene. The volume ratio of water to organics is 1︰1. The results show that the type and valence of electrolyte cations are important factors influencing the microemulsion behavior. Biva-lent Ca2＋is more effective than monovalent K＋and Na＋for the formation of Winsor type III and II microemulsion. For electrolytes with the same monovalent cation Na＋, i.e. NaCl and Na2CO3, anions in the electrolyte have some effect. Bivalent anion 23CO - leads to a lower activity of cation Na＋than monovalent anion Cl-. NaOH （or KOH） behaves similar with NaCl （or KCl）. When HCl is used as electrolyte, its acidity plays an important role. Phase in-version of microemulsion from type III （or II） to type I is observed through precipitation of Ca2＋using Na2CO3, neutralization of HCl by NaOH, and addition of water to the system, which releases the oil from the microemulsion.

Preparation and Properties of Diesel Oil Microemulsified Acid

The microemulsified acid system composed by diesel oil, hydrochloric acid and emulsifier was investi- gated in this paper. The stability of microemulsified acid and the phase behavior of the microemulsified system Were studied. The size distribution and the corrosion inhibition performance were also observed. The results showed that the diesel oil microemulsified acid system possessed small size and good stability under different temperature.The tolerance to CaCl2 reached 80 g·L^-1. Compared with the same concentration hydrochloric acid solution, the corrosion inhibition performance of the diesel oil microemulsified acid system was remarkable.

Multilevel Power Modeling of Base Station and Its ICs

A new power estimation method is proposed for base station(BS) in this paper.Based on this method,a software platform for power estimation is developed.The proposed method models power consumption on different abstraction levels by splitting a typical base station into several basic components at different levels in the view of embedded system design.In particular,our focus is on baseband IC(Integrate Circuit) due to it's the dominant power consumer in small cells.Baseband power model is based on arithmetic computing costs of selected algorithms.All computing and storage costs are calibrated using algorithm complexity,hardware architecture,activity ratio,silicon technology,and overheads on all hierarchies.Micro architecture and IC technology are considered.The model enables power comparison of different types of base stations configured with different baseband algorithms,micro architectures,and ICs.The model also supports cellular operators in power estimation of different deployment strategies and transmission schemes.The model is verified by comparing power consumption with a real LTE base station.By exposing more configuration freedoms,the platform can be used for power estimation of current and future base stations.

HIGH DENSITY CULTIVATION OF A RECOMBINANT CD－1 CELL LINE PRODUCING PROUROKINASE USING A BIOSILON MICROCARRIER CULTURE SYSTEM

CD-1, a genetically-engineered CHO cell line, was cultivated with a Biosilon microcarrier culture system.We successfully cultivated CD-1 cells to a very high density (over1×107cells/ml). Prourokinase was stably secreted at about 180 IU/ 1e6 cells/24 h. Experiments showed that CD-1 cells growing on Biosilon microcarriers were able to spontaneously release from the microcarriers, then reatthch and proliferate on fresh microcarriers. This makes it very easy to scale up preduction. The microcarriers could be reused several times without affecting adhesion. proliferation and prourokinase secretion. With CMPECC membrane radial flow chromatography and MPG chromatography, the prourokinase in conditioned medium could be purified to a specific activity of 1×105 IU/mg of protein. The purification factor was about 600 fold, and approxiamately 90 % of the biological activity was recovered.

Preparation and in vitro Release Performance of Sustained-release Captopril/Chitosan-gelatin Net-polymer Microspheres

The captopril/Chitosan-gelatin net-polymer microspheres(CTP/CGNPMs) were prepared using Chitosan(CTS) and gelatin(GT) by the methods of emulsification,cross-linked reagent alone or in combination and microcrystalline cellulose(MCC) added in the process of preparation of microspheres,which aimed to eliminate dose dumping and burst phenomenon of microspheres for the improvement of the therapeutic efficiency and the decrease of the side effects of captopril(CTP). The results indicated that CTP/CGNPMs had a spherical shape,smooth surface and integral structure inside but no adhesive phenomena in the preparation. The size distribution ranged from 220 μm to 280 μm. The CTP release test in vitro demonstrated that CTP/CGNPMs played the role of retarding the release of CTP compared with ordinary CTP tablets. The release behaviors of CGNPMS were influenced by preparation conditions such as experimental material ratio(EMR) and composition of cross linking reagents. Among these factors,the EMR(1/4),CLR(FA+SPP) and 0.75% microcrystalline cellulose(MCC) added to the microspheres constituted the optimal scheme for the preparation of CTP/CGNPMs. The ER,DL and SR of CTP/CGNPMs prepared according to the optimal scheme were 46.23±4.51%,9.95±0.77% and 261±42%,respectively. The CTP/CGNPMs had the good characteristics of sustained release of drug and the process of emulsification and cross-linking were simple and stable. The CGNPMs are likely to be an ideal sustained release formulation for water-soluble drugs.

Diffusion of chemically reactive species in third grade fluid flow over an exponentially stretching sheet considering magnetic field effects

This article addresses the magnetohydrodynamics(MHD) flow of a third grade fluid over an exponentially stretching sheet. Analysis is carried out in the presence of first order chemical reaction. Both cases of constructive and destructive chemical reactions are reported. Convergent solutions of the resulting differential systems are presented in series forms. Characteristics of various sundry parameters on the velocity, concentration, skin friction and local Sherwood number are analyzed and discussed.

Extraction of samarium by NaOL-pentanol-hetpane-NaNO3 winsor Ⅱ microemulsion systems

The influence of the concentration of sodium oleate （NaOL） and pentanol on the water uptake of microemulsion was stuied. The effect of the concentraction of NaOL and pentanol on the extraction yield of samarium was investigated. The result shows that the extraction and concentration of samarium is effective under well-defined conditions utilizing Winsor Ⅱ microemulsioin systems. The FT-IR spectra and conductivity research may indicate that stable hydrophobic chelate complexes were produced after the extraction of Sm（Ⅲ） by NaOL micromulsion systems.

Oscillation of Neutral Differential Equations with Integrally Small Coefficients

Some new sufficient conditions for the oscillation of the neutral equationddt[y（t）-R（t）y（t-r）]+P（t）y（t-τ）- Q（t）y（t-σ）=0, where P,Q,R∈C（[t0,∞）,R+) and r,τ,σ∈（0,∞）,are obtained for the case where former results can not be applied in this paper.

Antiphotooxidative Effect of Ascorbic Acid Microemulsion in Virgin Coconut Oil

This study was intended to determine the effectiveness of ascorbic acid microemulsion for inhibiting photooxidation of virgin coconut oil （VCO）. The ascorbic acid microemulsion was prepared by mixing ascorbic acid, deionized water, surfactant mixture, and VCO as continuous phase. Ascorbic acid microemulsion at 50, 100, 150, 200, or 250 ppm was dispersed into VCO. The same level of ascorbyl palmitate, TBHQ （tertiary butylhydroquinone）, and BHA （butylated hidroxyanisole） were added into VCO and used for comparison. All of these samples were subsequently subjected to photooxidation under fluorescent light exposure （4,000 lux） for up to 8 hours at room temperature （30 ~ 1 ~C）. Peroxide values and p-anisidine values of photooxidized samples were measured at 1 hour interval. The result indicated that at the level of 250 ppm, ascorbic acid which was included into the microemulsion system effectively inhibited photooxidation of VCO in comparison with the other antioxidants. This study confirmed that a highly hydrophilic singlet oxygen quencher （SOQ） such as ascorbic acid can be successfully incorporated into the microemulsion system and the addition of ascorbic acid microemulsion effectively inhibited photooxidation of VCO during storage under fluorescent light.

Sulfation Kinetics in the Preparation of Cellulose Sulfate

In the established apparatus, the conversion ratios of cellulose sulfation (X) under different sulfation conditions were measured. The range of temperature was from -5℃ to +5℃, and the H2SO4 concentration was from 3.1 mol·L-1 to 4.5mol·L-1. The experimental results were used for the establishment of the kinetic model for cellulose sulfation. With the model, X values and the yield of NaCS (Y) can be calculated, thus the reaction with respect to H2SO4 concentration is determined to be third order.

Hydrodynamics and Mass Transfer of Oily Micro-emulsions in An External Loop Airlift Reactor

This study reports an experimental investigation on hydrodynamics and mass transfer characteristics in a 15.6x10-3 m3 external loop airlift reactor for oil-in-water micro-emulsions with oil to water volume ratio （φ） rang- ing from 3% to 7% （by volume）. For comparative purposes, experiments were also carried out with water. Increase in φ of micro-emulsion systems results in an increment in the gas holdup and a decrease in the volumetric gas-liquid oxygen transfer coefficient and liquid circulation velocity, attributed to the escalation in the viscosity of mi- cro-emulsions. The gas holdup and volumetric mass transfer coefficient for micro-emulsion systems are signifi- cantly higher than that of water system. Two correlations are developed to predict the gas holdup and oxygen trans- fer coefficient

Molecular Simulation of Oxygen Sorption and Diffusion in the Poly （lactic acid）

Grand canonical Monte Carlo and molecular dynamics simulation methods are used to simulate oxygen sorption and diffusion in amorphous poly（lactic acid） （PLA）. The simulated solubility coefficient of oxygen is close to experimental data obtained from the quartz crystal microbalance but much higher than those from the time-lag method. This discrepancy is explained by using the dual-mode sorption model. It is found that oxygen sorotion in PLA is predominantly Langmuir type controlled, i.e., through the process of filling holes. The time--lag method only takes into account oxygen molecules that participate the diffusion process whereas a large proportion of oxygen molecules trapped in the void have little chance to execute hopping due to the glassy nature of PLA at room temperature. The simulated diffusion coefficient of oxygen is reasonably close to the data obtained from the time-lag method. The solubility coefficient of oxygen decreases linearly with increasing relative humidity while its diffusion coefficient firstly decreases and then increases as a function of relative humidity.

“微”时代创新高校网络思想政治教育的思考

"微"时代是当今蕴含生活方式、文化心理与价值认知的时代命题。在"微"时代这一时代背景下,"无微不至"成为时代氛围,同时,与之相关的"微"话语、"微"元素、"微"体系也应运而生,在高校网络思想政治教育中发挥着独特的作用。如何有效利用"微"文化为当前高校网络思想政治教育创新服务,进一步开拓高校网络思想政治教育发展的新阵地,是摆在我们面前的一大机遇与挑战。

An Osmotic Pressure Equation of Uncharged Micelle and Oil/Water Microemulsion Systems

1 INTRODUCTIONMicroemulsion and micelle systems are wide-spread in the industry and agriculture applications,e.g.the petroleum exploitation,food industry chemical engineering and biological engineering,but so far,their properties are still not very well understood.Both micelle and microemulsion systems are dispersed systems and consist of the aggregationsof the surfactant.The difference between them is that there is dispered liquid phase in the coreof the aggregation in the case of the microemulsion,but in the micelle there is not any