WorldWideScience

Sample records for resursu plsmas analze

  1. Analzing the Measures of Minimizing Pollution Process for Environment-firendly Plasticizer%浅谈环保型增塑剂生产过程中污染最小化的处理措施

    Institute of Scientific and Technical Information of China (English)

    余志平; 方世银; 曾晓康

    2014-01-01

    研究了具体的单个增塑剂生产过程中各个生产环节“三废”的产生情况,以及怎样最大限度地减少污染物生成的方法。复配型环保增塑剂是几种不同优良增塑剂的叠加,可以赋予塑料制品多方面的特性,对此类增塑剂的生产特点以及怎样控制污染物做了分析和介绍。%“Three wastes” generated from each individual production link for the specific plasticizer production process were researched, as well as how to minimize the generation of pollutants. Composite environmental plasticizers was the superposition of several different excellent plasticizers. It can be given the characteristics of various plastic products. The production features of these plasticizers and how to control the contaminants were analyzed and introduced.

  2. [Trial digitalization of analog-data obtained from the AutoAnalyzer].

    Science.gov (United States)

    Omori, S

    2000-10-01

    The AutoAnalzer(Basic Model) manufactured on Technicon corporation was a very useful instrument for clinical laboratory automation, but it was necessary to convert the data obtained from the instrument to digital values used the chart reader. This was very troublesome and there was apprehension that there would be errors in A-D conversion. We tried converting data obtained from the AutoAnalzer to a digital value by on-line connection of the instruments with minicomputers(LINC-8 and FACOM-R). The output of the recorder was converted to voltage(0 to 100 V) using a potentiometer, quantitated(0 to 1.000) by the A-D converter attached to LINC-8, and processed by the minicomputer. The control-box was an experimental device mainly designed for the convenience of users. The functions of the control-box were designated analytical items, No. of A-D converters, start and stop of the AutoAnalzer operation to the minicomputer. Employing the control-box, a technician operated this system freely, without direct computer operation. We established a generally satisfactory system for clinical laboratory automation using the minicomputer.

  3. Interneta mārketinga rīku izmantošana Latvijas mazos un vidējos uzņēmumos

    OpenAIRE

    Škutāns, Mārtiņš

    2013-01-01

    Uzņēmumu konkurētspējas palielināšana ir tieši saistīta ar efektīvu resursu sadali kā arī izmantošanu un 21. gadsimtā efektīva interneta mārketinga rīku resursu izmantošana pozitīvi ietekmē gan apgrozījuma rādītājus, gan komunikāciju ar klientiem. Darbā pētāmā problēma un piedāvātie tās risinājumi ir saistīti ar to, kā Latvijas mazie un vidējie uzņēmumi izmanto šos rīkus. Darbā tika izvirzīti divi mērķi. Pirmais-izpētīt interneta mārketinga rīku izmantošanu Latvijas mazos un vidējos uzņēm...

  4. Effects of mechanical activation on the carbothermal reduction of chromite with metallurgical coke

    Directory of Open Access Journals (Sweden)

    Kenan Yıldız

    2010-06-01

    Full Text Available The carbothermal reduction of mechanically activated chromite with metallurgical coke under an argon atmosphere was investigated at temperatures between 1100 and 1400°C and the effects of the mechanical activation on chromite structure were analyzed by x-ray diffraction (XRD and scanning electron microscopy (SEM. An increase in specific surface area resulted in more contact points. The activation procedure led to amorphization and structural disordering in chromite and accelerated the degree of reduction and metalization in the mixture of chromite and metallurgical coke. Carbothermal reduction products were analzed by using scanning electron microscopy (SEM/EDS.

  5. ERP sistēmas ieviešana

    OpenAIRE

    Proskurins, Aleksandrs

    2008-01-01

    Šajā darbā tika apskatīta informācijas sistēmu klasifikācija, uzņēmuma resursu plānošanas sistēmas (ERP) definīcija un tās vieta IS klasifikācijā. Tika apskatīti ERP sistēmu ieviešanas teorētiskie aspekti, izstrādes un pielāgošanas specifika, kā arī tika izanalizēti vairāki ERP sistēmas ieviešanas projekti Latvijas uzņēmumos.

  6. ERP sistēmas ieviešana

    OpenAIRE

    Proskurins, Aleksandrs

    2008-01-01

    Šajā darbā tika apskatīta informācijas sistēmu klasifikācija, uzņēmuma resursu plānošanas sistēmas (ERP) definīcija un tās vieta IS klasifikācijā. Tika apskatīti ERP sistēmu ieviešanas teorētiskie aspekti, izstrādes un pielāgošanas specifika, kā arī tika izanalizēti vairāki ERP sistēmas ieviešanas projekti Latvijas uzņēmumos.

  7. Biorefinery Technologies for Biomass Conversion Into Chemicals and Fuels Towards Zero Emissions (Review) / Nulles Emisiju Princips Biomasas Konversijas Tehnoloģijās Aizstājot Fosilos Resursus (Pārskata Raksts)

    Science.gov (United States)

    Gravitis, J.; Abolins, J.

    2013-10-01

    Exhausting of world resources, increasing pollution, and climate change are compelling the shift of the world economy from continuous growth to a kind of economy based on integration of technologies into zero emissions production systems. Transition from non-renewable fossil resources to renewable resources provided by solar radiation and the current processes in biosphere is seen in the bio-refinery approach - replacing crude oil refineries by biomass refineries. Biotechnology and nano-technologies are getting accepted as important players along with conventional biomass refinery technologies. Systems design is a significant element in the integration of bio-refinery technologies in clusters. A number of case-studies, steam explosion auto-hydrolysis (SEA) in particular, are reviewed to demonstrate conversion of biomass into value-added chemicals and fuels. Analysis of energy flows is made as part of modelling the SEA processes, the eMergy (energy memory) approach and sustainability indices being applied to assess environmental impacts. Resursu izsīkums, vides piesārņojums un globāla mēroga klimatiskās izmaiņas ir civilizācijas izdzīvošanai būtiski faktori, kas virza pasaules ekonomikas pārmaiņas, atsakoties no nepārtrauktas izaugsmes idejas par labu tādai ekonomikai, kas balstās uz atjaunojošamies resursiem un dažādu tehnoloģiju integrācijemisiju principam atbilstošās ražošanas sistēmās. Saules radiācijas ierosinātajos planētas biosfērā notiekošajos procesos radīto organisko vielu pārstrādes kompleksi, kas operē ievērojot sabalansētu nulles emisiju principu, tiek uzlūkoti kā tās ekonomiskās (ražošanas) struktūras, kurām jānodrošina pāreja uz atjaunojošos resursu izmantošanu, aizstājot esošās fosilo resursu (naftas, ogļu) pārstrādes rūpnīcas. Līdzās jau apgūtajām biomasas rafinēšanas tehnoloģijām svarīga un pieaugoša loma ekonomiskās sistēmas resursu bāzes nomaiņā ir bio- un nanotehnolo

  8. CALCULATION OF RESIDUAL STRESSES RESULTING FROM BENDING OF COLD FORMED STEEL BARS

    Directory of Open Access Journals (Sweden)

    Gökmen ATLIHAN

    2007-01-01

    Full Text Available In this study, the residual stresses in the forming of the seed capsule which used in manifacturing the ferforje was carried out. These residual stresses were made up in the process which bars with 8 mm diameter were converted to 6 x 6 mm2 square profiles. This process was actually a Rolling process performed at three levels. Plastic constant and strain hardening parameter were calculated at each level . Then, elasto-plastic stress analysis of the bar subjected to bending was analzed by means of Newton Cotes formulation. The load value that cause residual stresses on the steel bar was assumed to be constant in elasto-plastic analysis. Elastic, plastic and residual stresses under the load value were determined in each level and results were presented in the graphical format.

  9. Deposition and characterization of CuInS2 thin films deposited over copper thin films

    Science.gov (United States)

    Thomas, Titu; Kumar, K. Rajeev; Kartha, C. Sudha; Vijayakumar, K. P.

    2015-06-01

    Simple, cost effective and versatile spray pyrolysis method is effectively combined with vacuum evaporation for the deposition of CuIns2 thin films for photovoltaic applications. In the present study In2s3 was spray deposited over vacuum evaporated Cu thin films and Cu was allowed to diffuse in to the In2S3 layer to form CuInS2. To analyse the dependence of precursor volume on the formation of CuInS2 films structural, electrical and morphological analzes are carried out. Successful deposition of CuInS2thin films with good crystallinity and morphology with considerably low resistivity is reported in this paper.

  10. Model of Polysilicon Electro-thermal Micro Actuator and Research of Micro Scale Effect

    Institute of Scientific and Technical Information of China (English)

    ZHANGYong-yu; SHENXue-jin; CHENXiao-yang

    2004-01-01

    A type of crank beam electro-thermal mircro actuator was prescribed Mechanical model of the actuatar was estabilished,and the static characteristic was analzed Comparing the theoretical analzsis with experimental data,it is found that the thermodynamic character of material in micro actuator has a different variable regularity contrasted to that used in macro scale machines.it is the micro scale effect that results in the deriation between the simulating result and experimental results the thermodynamic expression of polysilicon which was fitted by means of the experimental data concerned was used to modify the mechanical model The modifiex model ,in which the mircro scale thermodynamic characteristic characteristic was considered,was more reasonable and could make the optimal design and control strategies analyzing the straight-line micro actuator more feasible.

  11. 安钢10万m3威金斯气柜利用效率探讨与应用%Efficiency Analysis and Application of Anyang Iron and Steel 100 000 m3 Wiggins Gasholder

    Institute of Scientific and Technical Information of China (English)

    于海顺; 王志峰; 王祥凯; 张文杰; 赵卫兵

    2015-01-01

    As to the operating situation of Augang 100 000 Wiggins gas holder, this paper analyzes the efficiency factors of Wiggins gesholder, and puts forward improving weasuers, including establishing a liaision mechauism, adjusting part programs of micro oxygen analzer before gasholder in gasholder control system to improve the gas-holder efficiency.%针对安钢10万m3威金斯气柜运行现状,对影响威金斯气柜利用效率的因素进行了探讨,并提出了建立联络机制、调整气柜控制系统中气柜进口前微氧分析仪的部分程序等改进措施。采取有效措施后提高了气柜的利用效率。

  12. „ORACLE E-BUSINESS SUITE” MIGRĀCIJA STARP DAŽĀDĀM VERSIJĀM

    OpenAIRE

    Dansone, Linda

    2008-01-01

    Maģistra darbā analizēta uzņēmumu resursu pārvaldības sistēmās "Oracle E-Business Suite" migrācija starp dažādām versijām. Darba gaitā izpētīti ieteikumi „Oracle E-Business Suite” migrācijai, apskatīta Oracle E-Business Suite standartfunkcionalitāte un arhitektūra, izanalizēta uzņēmuma pieredze šīs sistēmas migrēšanā, apzināti ieteikumi un rekomendācijas šī procesa uzlabošanā, apskatīta risku pārvaldība, apskatīts COBIT standarts, izanalizēti riski, veikta pieteikumu analīze pirms migrāci...

  13. “吸盘3”号挖泥船核子密度计改进设计%The Improved Design of Nuclear Density Meter for “Xipan 3” Dredger

    Institute of Scientific and Technical Information of China (English)

    万滔

    2015-01-01

    The nuclear density meter for dredger has problems of low precision, susceptible by environmental radiation and adopting the radiation protection standards for land.After analzing the specific construction conditions of the dredger, the design of nuclear density meter is improved for dredger according to the requirements of measurement precision, environmental radiation shielding and radiation protection standards.The application of the meter in Xipan 3 dredger shows that the measuring accuracy reaches the design requirements, the effect of environmental radiation on the measurement result is eliminated, and the radiation protective effect is excellent.%针对挖泥船核子密度计普遍存在精度偏低,易受环境辐射影响,辐射防护标准陆地化的问题,在分析挖泥船具体施工条件的基础上,依据测量精度、环境辐射屏蔽、辐射防护标准对挖泥船核子密度计进行改进设计。改进后在“吸盘3”号挖泥船上应用表明,测量精度达到设计要求,消除了环境辐射对测量结果的影响,辐射防护效果优异。

  14. Ca位置换Fe的氧化物Ca1-xFexMnO3(x=0-0.12)的制备及电输运性能%Preparation and electrical transport properties of Fe doped Ca1-xFexMnO3(x=0-0.12) oxide

    Institute of Scientific and Technical Information of China (English)

    张飞鹏; 张忻; 路清梅; 刘燕琴; 张久兴

    2011-01-01

    The Fe doped Ca1-xFexMnO3(x=0—0.12) powder and bulk samples are fabricated by citric acid sol-gel and ceramic preparation process,the samples are analzed by X-ray diffraction pattern and electrical constant measurement.The results show that all samples are of single phase,the lattice constants are gradually lowered by Fe doping for Ca site,and the crystalline grain growth is restrained.All the bulk samples have semiconductor transporting characteristics in the whole temperature range of measurement.The transportation mechanism is not changed.The energy for polarons to hop is increased for doped samples and thus the electrical resistivity is increased by increasing Fe doping concentration.%采用柠檬酸溶胶凝胶结合陶瓷烧结工艺制备了Ca位置换Fe的Ca1-xFexMnO3(x=0-0.12)氧化物粉末及块体试样,通过X射线衍射及电参数测试分析了所得试样.实验结果表明:在实验范围内,所有试样呈单一物相,Ca位置换Fe之后随置换量的增加,CaMnO3的晶胞逐渐变小,晶粒长大受到抑制.测试温度范围内所有试样均呈半导体输运特性,电输运机制未发生变化;当x在0—0.12范围内Fe置换使极化子跃迁能提高,试样各温度点的电阻率随着Fe置换量x的增加而提高.

  15. 基于DEA-Tobit两步法的主产区玉米生产技术效率分析%Technical Efficiency of Corn Production in Main Producing Region in China Based on DEA-Tobit

    Institute of Scientific and Technical Information of China (English)

    宿桂红

    2011-01-01

    The Panel Data of com production in 11 provinces are analzed, such as Jilin, Heilongjiang, Liaoning, Inner Mongolia, Hebei,Shandong, Henan, Anhui, Jiangsu, Hubei and Sichuan. Based on the CRS, VRS and Malmquist exponential models of DEA, technical efficiency of corn production is measured in main producing region by DEA-Tobit. And its influencing factors are analyzed. Result shows that corn production in main producing areas is mainly scale inefficiency and is at the stage of decreasing returns to scale. Pure technical efficiency of corn production is effective in most main producing regions. Total Factor Productivity of corn production is improved in main producing regioas, because the speed of technical progress is greater than the speed of efficiency reduction. In the years 1998 -2008, corn production in main producing regions is rational in structure and is not affected by the natural disasters.%以1998~2008年玉米主产区(吉林、黑龙江、辽宁、内蒙古、河北、山东、河南、安徽、江苏、湖北、四川)的面板数据为基础,基于DEA的CRS、VRS和Malmquist指数模型,运用DEA-Tobit两步法测度主产区玉米生产的技术效率,并分析其影响因素.结果表明,主产区玉米生产多为规模无效,且普遍处于规模报酬递减阶段;主产区玉米生产多为纯技术效率有效;主产区玉米生产全要素生产率提高主要是由于技术进步速度大于技术效率下降的速度.1998~2008年,玉米主产区的生产结构合理,并未受到自然灾害的影响.

  16. 重型颅脑损伤患者术后出现脑积水影响因素的分析%Analysis the Factors Affect of Hydrocephalus in Patients With Severe Craniocerebral Injury After Postoperation

    Institute of Scientific and Technical Information of China (English)

    张明; 韩冰; 王新厂

    2015-01-01

    Objective Analysis of the influencing factors of hydrocephalus after craniocerebral injury operation.Methods Retrospective analzed the clinical data of 114 patients undergoing craniotomy in treatment of patients with craniocerebral injury of the age, gender, glasgow coma scale score, subarachnoid hemorrhage, intracranial infection, intraventricular hemorrhage, lumbar cistern set tube drainage and postoperative hydrocephalus,waist cisterna magna cathetering drainage and multiple regression analysis, summarized the postoperative risk factors for hydrocephalus.Results Subarachnoid hemorrhage, cerebral hemorrhage, intracranial infection were the risk factors of postoperative hydrocephalus, and drainage of lumbar cistern drainage was the protective factor for the occurrence of hydrocephalus after operation.Conclusion Subarachnoid hemorrhage, cerebral hemorrhage, intracranial infection can increase the probability of postoperative hydrocephalus, and drainage of lumbar cistern is beneficial to reduce the incidence of hydrocephalus after operation.%目的 分析颅脑损伤患者术后出现脑积水的影响因素.方法 回顾性分析114例行开颅手术治疗的颅脑损伤患者的病历资料,分析其年龄、性别、格拉斯哥昏迷(GCS)评分、蛛网膜下腔出血、颅内感染、脑室有无积血、腰大池置管引流与术后出现脑积水的关系,总结开颅术后患者出现脑积水的高危因素.结果 蛛网膜下腔出血、脑室内积血、颅内感染是术后患者出现脑积水的高危因素,腰大池置管引流为术后避免出现脑积水的保护性因素.结论 蛛网膜下腔出血、脑室内积血、颅内感染会增加术后出现脑积水概率,腰大池置管引流有利于降低术后出现脑积水的概率.

  17. Feature based man-hour forecasting model for aircraft structure parts NC machining%基于特征的飞机结构件数控加工工时预测模型

    Institute of Scientific and Technical Information of China (English)

    刘长青; 李迎光; 王伟; 林勇

    2011-01-01

    针对目前数控加工工时预测方法不能兼顾精度和效率的问题,通过分析飞机结构件的结构特点和工艺特点,基于加工特征属性提炼工时的影响因素,提出了一种基于特征的两级结构工时预测模型。首先依据加工特征属性的数据类型把加工特征分为枚举型和数值型,然后以枚举型特征属性作为分类器的输入构建模型第一级结构,数值型特征属性作为反向传播神经网络的输入构建模型第二级结构。基于该模型开发的系统已经在某大型数控企业得到了良好的应用,效率高且误差在10%以内。%Existing prediction methods for Numerical Control(NC) machining man-hours couldn't taken precision and efficiency into consideration simultaneously,by analzing the structure and process characteristics of aircraft structural parts,a feature-based two-level structure man-hour foresting model was proposed in view of man-hour influencing factors exteacted by machining feature attributes.Firstly,the machining features were classified into enumerative type and numerical value type according to machining feature attributes.Then,enumerative value type attribute was used as input of the classifier to establish first level of the model and numerical value type attribute was used as the input of back propagation neural network to set up second level of the model.The system developed based on this model was applied in a large NC enterprise with high efficiency and the error was within 10%.

  18. A Novel Narrow-Band Microstrip Filter with Wide StopBand%一种新型的窄带远寄生小型化微带滤波器

    Institute of Scientific and Technical Information of China (English)

    许悦; 王胜福; 世娟

    2012-01-01

    设计了一种新型的窄带远寄生小型化微带滤波器,其远寄生特性通过在带通滤波器之后级联低通来实现.其中带通部分采用两阶带有调节支节的含源-负载非相邻耦合新型电路结构,文中给出其相应的拓扑与耦合系数矩阵,并分析了调节支节的作用;对于用于抑制远端寄生信号的低通滤波器,给出其集总参数原型等效电路.基于此,进行建模与仿真,设计了一款工作于S波段的微带滤波器,实测结果与仿真值、理论值有很好的吻合度,实现指标为中心频率3.93 GHz下的相对带宽8%,寄生远于12 GHz,体积27 mm×10.16 mm×7.45 mm,可以满足实际工程应用的需要.该电路结构新颖,产品尺寸小,设计方法简洁实用,适于推广应用.%A novel narrow-band microstrip filter with wide stopband and small size was designed which wide stopband characteristics was realized by a lowpass filter allied to a bandpass filter. For the two-pole source-load cross-coupling band pass filter that has a pair of tuning stubs, the topology circuit, coupling matrix and function of tuning stubs were proposed, as well as the equivalent circuit of the low-pass filter. By modeling and analzing, A novel S-band two-pole microstrip filter was designed fabricated. The filter exhibits a fractional bandwidth of 8% at 3. 93 GHz and a furious frequency as far as 12 GHz, having a size of 27 mm × 10. 16 mm ×7. 45 mm. There is a very good coincidence between the simulated and measured data. The new filter can be widely used with its good performance and small size.

  19. 不同蒸馏方法提取辛夷挥发油的比较分析%Comparative Analysis of Different Distillation Extraction of Flos Magnoliae Volatile Oil

    Institute of Scientific and Technical Information of China (English)

    魏鹏程; 赵铭钦; 刘鹏飞; 刘会杰; 张欢欢; 包晓容; 姬小明; 魏跃伟

    2013-01-01

    Flos magnoliae volatile oil was extracted by steam distillation and simultaneous distillation and extraction, and then analzed using gas chromatography-mass spectrometry (GC-MS) combined with chemical component determination and comparative analysis. Results indicated that there were 30 volatile oils including rose oxide, terpinyl acetate, bornyl acetate extracted by steam distillation while 30 volatile oils including terpinolene, estragole, l-hydroxy-l,7-dimethyl-4-isopropyl-2,7-ring decyl diene extracted by simultaneous distillation. There were 28 volatile oils were mutual and firpene, beta pinene, eucalyptol, linalool, 1-camphor, alpha terpineol, alpha caryophyllene, (E)-beta acacia ene, geraniolene, cadinene, alpha burt orange tomato alcohol, famesol with high content. The color and average yield of volatile oil extracted by steam distillation and simultaneous distillation were pale yellow and 1.3% and 1.5% respectively. These results showed that distillation of volatile oil aroma quality and yield was better than those obtained by simultaneous distillation.%采用水蒸气蒸馏法与同时蒸馏萃取辛夷挥发油,用气相色谱-质谱(GC-MS)联用方法进行了化学组分的测定和分析比较,水蒸气蒸馏法所得挥发油主要成分为30种,独有成分为玫瑰醚、乙酸松油酯、乙酸冰片酯.同时蒸馏法所得挥发油主要成分为30种,独有成分为萜品油烯、草蒿脑、1-羟基-1,7-二甲基4异丙基-2,7-环癸二烯.两种方法共有成分28种,含量较高的为蒎烯、β-蒎烯、桉叶油醇、芳樟醇、左旋樟脑、α-松油醇、α-石竹烯、(E)-β-金合欢烯、香叶烯、杜松油烯、α-毕橙茄醇、金合欢醇.水蒸气蒸馏法所得挥发油颜色浅黄,平均出油率为1.3%.同时蒸馏法所得挥发油颜色淡黄,平均出油率为1.5%.同时蒸馏萃取法无论从香气品质,含量,提取率均略高于水蒸气蒸馏法.

  20. 改良自乳化溶剂扩散法制备MePEG-PLA纳米粒对成骨细胞的毒性%Cytotoxicity effect of MePEG-PLA nanoparticles prepared by modified self-emulsion solvent diffusion technique on osteoblasts in vitro

    Institute of Scientific and Technical Information of China (English)

    王忠磊; 高岩; 赖春花; 卢海宾; 李少冰; 蒋颖; 韦丛云; 周磊

    2011-01-01

    背景:两亲性嵌段聚合物由于其较强的载药能力强、纳米级大小、血液中长循环等优点在载药系统中得到广泛的应用.目的:评估改良自乳化溶剂扩散法制备的甲氧基封端的聚乙二醇-聚乳酸 (MePEG-PLA)纳米粒对人骨肉瘤细胞MG63的毒性.方法:通过改良自乳化溶剂扩散法制备MePEG-PLA纳米粒,MTS法测定纳米粒培养1,2,3 d后对MG63的毒性.激光粒度分析仪测定纳米颗粒的粒径大小、粒径分布及Zeta电位;透射电镜表征纳米胶束外观形态;酶标仪检测培养1,2,3 d细胞吸光度值.结果与结论:MePEG-PLA纳米粒的平均粒径为25.7 nm,分布均匀,呈球形,Zeta电位为-8.06 mV,MePEG-PLA毒性为 0级.提示改良自乳化溶剂扩散法制备纳米粒简单易行,制备的纳米粒无毒,具有良好的应用前景.%BACKGROUND: Amphiphilic block copolymers have been widely applied in the drug delivery system because of the high capacity of drug carriers, nanoparticles and long circulation time. OBJECTIVE: To evaluate the cytotoxicity effect of MePEG-PLA nanoparticles prepared by modified self-emulsion solvent diffusion technique on MG63 in vitro.METHODS: MePEG-PLA nanoparticles were prepared by modified self-emulsion solvent diffusion technique. The cytotoxicity effect of MePEG-PLA nanoparticles on MG63 was detected using MTS assay at days 1, 2, 3. Particles size, polydispersity index and Zeta electric potential were measured by laser particle size analzer. The morphology of MePEG-PLA nanoparticles were observed by transmission electron microscope. Absorbance values at days 1, 2, 3 were detected by microplate reader. RESULTS AND CONCLUSION: MePEG-PLA nanoparticles had a regular spherical shape with the mean diameter of 25.7 nm and scattered evenly. The Zeta potential was -8.06 mV. The cytotoxicity grade of MePEG-PLA nanoparticles was 0. The results indicate that MePEG-PLA nanoparticles prepared easily by modified self-emulsion solvent diffusion

  1. The effect of non-pharmacological intervention on the prevention and treatment of people with lipemia%非药物干预对健康体检人群高脂血症的防治效果研究

    Institute of Scientific and Technical Information of China (English)

    黄喜顺; 吴义森; 蓝宇频; 邱耀辉

    2013-01-01

    目的 综合研究评价健康体检人群血脂异常非药物干预的效果.方法 健康体检人员中检出高脂血症者263例,随机分为干预组132例和对照组131例,干预组给予8个月的综合性非药物干预,包括饮食控制、健康宣教、运动处方等;对照组不进行上述干预,两组观察期均为 8个月.干预前后分别测定空腹血中总胆固醇(TC)、三酰甘油(TG)、低密度脂蛋白胆固醇(LDL-C)、高密度脂蛋白胆固醇(HDL-C)、体质量指数(BMI)、空腹血糖及血尿酸(UA),血压;同时统计高脂血症相关知识知晓率、饮食和运动指标,并进行统计学分析.结果 干预组TC、TG、LDL-C、LDL-C、BMI及UA各指标下降幅度与对照组比较均有统计学意义(P<0.01);且血脂下降与相关健康知识知晓水平的提高、主动性身体锻炼的增加以及食油摄入量的减少等呈明显相关(P=0.00);DBP和空腹血糖下降程度与对照组比较,差异无统计学意义(P=0.11;P=0.39).结论 非药物干预方法对高脂血症患者有一定疗效.%Objective To evaluated the effecl of non-drug inlervenlions on blood lipid abnormalities. Methods 263 cases with lipemia from 1056 cases in heallhy volunteers of the hospital were randomly divided into intervention group( n = 132) and control group( n = 131) , the intervention group was given eight months of comprehensive non-drug interventions, including diet, health missionary, exercise prescription, and so on; control group without the intervention. Fasting blood total cholesterol(TC) , triglycerides (TG) were measured before and after the intervention, the low-density lipoprotein cholestero(LDL-C) , high density lipoprotein cholesterol( HDL-C) , body mass index( BMI) , fasting blood sugar and uric acid( UA) , blood pressure, hyperlipidemia knowledge awareness, diet and sports indicators also were analzed. Results In the intervention group, serum TC, TG and LDL-C, HDL-C, BMI, and UA indicators decreased

  2. Effect of comprehensive intervention nursing on anxiety and depression status of patients with rheumatoid arthritis%综合干预护理方式对改善类风湿关节炎患者焦虑及抑郁状态的影响

    Institute of Scientific and Technical Information of China (English)

    方丽萍

    2015-01-01

    目的 研究综合干预护理方式对改善类风湿关节炎患者焦虑及抑郁状态的影响.方法选取2012年5月至2013年5月我院收治的类风湿关节炎患者90例,随机分为研究组和对照组,每组45例,对照组患者给予常规护理,研究组患者在对照组的基础上给予综合干预,应用Zung自评抑郁量表(SDS)以及自评焦虑量表(SAS)对患者进行评定,并将干预前患者SDS、SAS评分与国内常规模型50例比较,同时比较干预前后两组患者的分值.结果 干预前90例患者SDS、SAS评分显著高于国内的常规模型,与常规模型比较差异具有统计学意义(P<0.05);两组护干预后SDS、SAS评分显著低于护理前,与干预前比较差异具有统计学意义(P<0.05);研究组SDS、SAS评分显著低于对照组,两组间比较差异具有统计学意义(P<0.05).结论 类风湿关节炎患者一定程度上存在抑郁和焦虑状态,综合干预护理方式能改善患者的焦虑和抑郁状态,提高患者的生活质量.%Objective study effect of comprehensive intervention nursing on anxiety and depression status of patients with rheumatoid arthritis.Method choose 90 cases of rheumatoid arthritis patients received in our hospital from May 2012 to May 2013, and randomly divided them into study and control group, 45 cases in each. Patients of control group received routine nursing care, and patients in study group applied comprehensive intervention on the basis of treatment of control group. Evaluate patients with Zung self-rating depression scale (SDS) and self rating anxiety scale (SAS) and compare SDS, SAS score of patients before intervention with 50 cases of conventional model, and analze scores of both groups patients after intervention. Result90 cases patients before intervention showed obviously higher SDS and SAS scores than those of conventional model, difference with conventional model shows statistical meaning (P < 0.05); SDS and SAS scores of two groups after

  3. 不同年龄段变应性疾病患者变应原检测分析%Analysis of Different Ages in Patients with Allergic Diseases Allergen Detection

    Institute of Scientific and Technical Information of China (English)

    魏峻

    2014-01-01

    Objective Al ergen detection in ptients with al ergic disease using serologicl detection method,analzing and comparing by age group. Methods For patients in our hospital during November 2012 to July a total 535 al ergic reaction,slgE serological detection of al ergen by Al ergyScreen system manufactured by Mediwess company in Germnay. Results ①Children al ergen positive rate was 73.14%,higher than the other age.②Distributions of al ergens of dif erent ages have dif erent,inhaled al ergens,the positive rate of slgE was highest in Dermatophagoides pteronyssinus 78.5%,children dermatophagoides pteronyssinus lgE positive rate was higher than the other age groups,89.74%. ③For inhalation al ergen detection of dif erent ages, the values of slgE are significantly dif erent for house dust mite and cat dog dander group, detection of house dust mite slgE values,different groups of children and other age is the most obvious(=2.018, 3.174, 3.476;=0.045,0.002, 0.001).For food al ergens in children group for milk,and the other three groups were significnt dif erences (=2.163, 2.338, 2.370, p=0.026,0.021,0.02). Conclusion Distribution of positive rate in different al ergens and the positive rate of the overal change with age is not consistent.At the same time,slgE detection value differences of children group and other groups also has the largest.Recommended intervention on early al ergic diseases of children.%目的采用体外血清学检测方法检测变应性疾病患者的变应原,并按年龄段分组进行比较分析。方法对2012年7月~11月我院门诊就诊的变态反应患者共535例,采用德国Mediwess公司生产的Al ergy Screen系统进行变应原的slgE血清学检测。结果①儿童组变应原检出阳性率为73.14%,高于其他各年龄段;于不同年龄段的变应原分布有差异,吸入性变应原中,slgE阳性率最高者为户尘螨,占78.5%;儿童组户尘螨lgE阳性率又高于其他各年龄段,为89.74%;③对

  4. 硬膜外自控镇痛泵防治前列腺术后膀胱痉挛失败原因分析%Analysis of the failure causes of bladder spasm of patient-controlled epidural analgesia pump treatment after prostatectomy

    Institute of Scientific and Technical Information of China (English)

    刘华平; 张欲晓; 张继邦; 黄永斌; 张海涛

    2013-01-01

    目的:观察硬膜外自控镇痛泵(PCEA)防治前列腺术后膀胱痉挛的失败原因,探讨补救措施。方法总结10年来PCEA防治前列腺术后膀胱痉挛的临床资料,分析PCEA防治前列腺术后膀胱痉挛的失败原因。结果本组11例,2例自控泵电源不足,3例硬膜外导管滑脱,1例导管阻塞,1例接头漏液,3例麻药配方剂量不足,1例硬膜外腔粘连。以上问题出现分别予以更换电池、静脉自控泵镇痛、更换三通管接头和应用盐酸屈他维林以补救。11例均达到防治膀胱痉挛的满意效果,未出现严重血尿和术后切口感染等严重并发症。结论 PCEA防治前列腺术后膀胱痉挛效果肯定,一旦发现术后镇痛效果不佳,及时分析原因,并予以纠正或采取其他方法防止膀胱痉挛,以免引起出血、感染等严重并发症。%Objective To investigate the failure causes and remedial measures of bladder spasm of patient-controlled epidural analgesia pump treatment after prostatectomy. Methods Clinical data of patient who received controlled epidural analgesia pump treatment of bladder spasm after prostatectomy in last ten years were summarized and reviewed retrospectively, andthe failure causes for bladder spasm of patient-controlled epidural analgesia pump treatment after prostatectomy were analzed. Results The group of 11 cases, 2 cases of controlled pump power supply, 3 cases of epidural catheter slippage, catheter obstruction in 1 cases, 1 cases of joint leakage, 3 cases of deficiency of anesthetic dose formula, 1 cases of epidural adhesion. All of the above problems are to replace the battery, patient-controlled intravenous analgesia, joint replacement and application of three pipe Drotaverine to remedy. All 11 cases achieved satisfactory effect in the prevention of bladder spasm, no severe hematuria and serious complication after incision infection. Conclusion Sure of bladder spasm after prostatectomy PCEA

  5. 广西褐家鼠感染路氏锥虫分子生物学鉴定及系统发育分析%Molacular biological identification and phylogenetic analysis of Trypanosoma lewis infection in Rattus norvegicus from several areas of Guangxi

    Institute of Scientific and Technical Information of China (English)

    张鸿满; 莫秀玲; 黄维义; 江河; 谭裕光; 张陆娟; 黄福明

    2011-01-01

    Aim To indentify Trypanosoma lewisi infections in Rattus norvegicus from Guangxi with molacular biological technique and differentiate rDNA-ITS1 sequences among the geographical populations of the trypanosome. Methods Genomic DNA was extracted from blood colts or spleens of R.norvegicus infected with trypanosomes from Nanning,Baise,Jingxi,Tianee in Guangxi. PCR assays with primers flanking trypanosome rDNA internal transcribed spacer 1 (ITS1) were performed and the amplicons were sequenced directly or after cloning to plasmids. The rDNA-ITS1 sequences were analzed with DNAstar7.1 and the phylogenetic tree was constructed with MEGA4.0. Results All the four geographical isolates were positive with specific amplicons. The rDNA-ITS1 sequences of T. lewisi from Guangxi showed high homology(over 96%) with the sequence of T. lewisi retrieved from GenBank. Based on the ITS1 sequence the genetic distance among the geographical populations of T. lewisi was very low (less than 0.021 ),But when comparing with its closely related species T.otospermophili,T. grosi and T. kuseli,the genetic distance were significantly higher (0.15~0.206). Conclusion The trypanosome in rats from Guangxi is T.lewisi and shows less difference among geographical populations. ITS1 is one of good markers for molecular diagnosis and phylogenesis on Trypanosoma.%目的 对广西部分地区褐家鼠感染的路氏锥虫进行分子生物学鉴定,分析不同地理种群间的遗传分化.方法 从广西靖西、百色、南宁、天峨4地感染路氏锥虫的褐家鼠脾脏或血凝块中提取DNA,设计ITS1保守引物进行PCR扩增,将PCR产物直接或克隆删序.用DNAstar7.1进行同源性比对,用Mega4.0进行差异分析与聚类、构建系统进化树.结果 广西各地血涂片阳性鼠标本均扩增出特异性DNA条带,4地样品测序结果与GenBank上登录的路氏锥虫(T.lewisi)序列的同源性均高达96%以上.区内各地理种群之间遗传距离均在0.021

  6. Reduction of Electric Breakdown Voltage in LC Switching Shutters / Elektriskās Caursites Sprieguma Samazināšana Šķidro Kristālu Šūnās

    Science.gov (United States)

    Mozolevskis, G.; Ozols, A.; Nitiss, E.; Linina, E.; Tokmakov, A.; Rutkis, M.

    2015-10-01

    Liquid crystal display (LCD) industry is among the most rapidly growing and innovating industries in the world. Here continuously much effort is devoted towards developing and implementing new types of LCDs for various applications. Some types of LCDs require relatively high voltages for their operation. For example, bistable displays, in which an altering field at different frequencies is used for switching from clear to scattering states and vice versa, require electric fields at around 10 V/μm for operation. When operated at such high voltages an electrical breakdown is very likely to occur in the liquid crystal (LC) cell. This has been one of the limiting factors for such displays to reach market. In the present paper, we will report on the results of electrical breakdown investigations in high-voltage LC cells. An electrical breakdown in the cell is observed when current in the liquid crystal layer is above a specific threshold value. The threshold current is determined by conductivity of the liquid crystal as well as point defects, such as dust particles in LC layer, pinholes in coatings and electrode hillocks. In order to reduce the currents flowing through the liquid crystal layer several approaches, such as electrode patterning and adding of various buffer layers in the series with LC layer, have been tested. We demonstrate that the breakdown voltages can be significantly improved by means of adding insulating thin films. Šķidro kristālu ekrānu (LCD) industrija ir viena no visstraujāk augošajām industrijām pasaulē. Daudz pūļu un resursu tiek veltīti jauna tipa LCD izstrādē dažādiem pielietojumiem. Atsevišķa tipa LCD funkcionēšanai nepieciešami augsti spriegumi. Piemēram, bistabilos LCD, kuros izkliedējošs (ieslēgts) un dzidrs (izslēgts) stāvoklis tiek iegūts ar dažādu frekvenču maiņsprieguma palīdzību, elektriskā lauka intensitāte šķidrā kristāla slānī var sasniegt pat 10 V/μm. Augstās elektriskā lauka intensit

  7. 注射用丹参(冻干)不良反应的临床特征及预警信号探讨%Exploration of the clinical characteristics of adverse reactions and warning signals of Danshen lyophilized powder injection

    Institute of Scientific and Technical Information of China (English)

    孙世光; 范伟; 戚冬梅; 刘健; 田月洁; 谢彦军; 孙蓉

    2016-01-01

    collected.The clinical characteristics of ADR were analzed by descriptive statistical method.The conceptual data and the data for each year from 2005 to 2015 were analyzed to find out the warning signals of ADR induced by DLPI by the methods of proportional reporting ratio (PRR),reporting odds ratio (ROR),and bayesian confidence propagation neural network (BCPNN).Results A total of 887 reports and 887 patients which comprised 460 males and 427 females with the average age of (57.7 ± 16.6) years (3 d to 91 years) were enrolled into the analysis.The patients whose age ≥45 years accounted for 79.59% (706/ 887).There were 1 281 times of ADR in 887 patients which involved mainly in skin and cardiocerebrovascular system.Top ten in turn were erythra,pruritus,dyspnea,shiver,nausea,headache,fever,palpitation,dizziness,and injection site reactions,totally 1 152 times of ADR which accounted for 65.89% (1 152/1 281).The patients stopped to use DLPI when the ADR appeared.Of the 887 patients,557 cases were recovered and 330 had improvement after receiving the symptomatic treatments.The results of analysis on conceptual data and the data for each year by methods of PRR,TOR,and BCPNN showed that erythra (PRR method:conceptual data,from 2008 to 2015;ROR method:conceptual data,from 2008 to 2014;BCPNN method:conceptual data),pruritus (PRR method:conceptual data,2012,2013,2015;ROR method:conceptual data,2012,2013),dyspnea (PRR method:conceptual data,from 2008 to 2014;ROR method:conceptual data,from 2008 to 2014;BCPNN method:conceptual data,2014),shiver (PRR method:conceptual data,from 2007 to 2009;ROR method:conceptual data,from 2011 to 2013;BCPNN method:conceptual data,2012 and 2013) could be warning signals of ADR induced by DLPI.Conclusions ADRs due to DLPI involve mainly skin and cardio-cerebrovascular system.Erythra,pruritus,dyspnea,and shiver can be the warning signals of ADR induced by DLPI.

  8. Analysis on livestock and poultry production and nitrogen pollution load of cultivated land during last 30 years in China%中国近30年畜禽养殖量及其耕地氮污染负荷分析

    Institute of Scientific and Technical Information of China (English)

    杨飞; 杨世琦; 诸云强; 王卷乐

    2013-01-01

      为准确掌握近年来中国畜禽养殖发展的区域差异及畜禽粪便对环境的污染威胁,该研究利用年平均增长率方法,揭示畜禽养殖量及其氮污染的增长率的区域差异和时序变化规律,分析耕地的畜禽污染负荷.结果表明,近些年中国畜禽养殖业发展迅速,各地区的猪、羊、家禽养殖量的年平均增长率都普遍较高,增幅甚至超过12%;牛和羊的年平均增长率的区域差异较大.畜禽养殖发展基本可分为3个阶段:稳步发展阶段(1980-1995年),全面发展阶段(1996-2006年),现代化发展阶段(2007年-至今).华北、华中、华南、西南地区畜禽氮污染产生量都较大,华北和东北各省的年平均增长率相对较高,其中河南、四川、山东三省的畜禽养殖的增幅较快、养殖量较大、耕地的氮污染负荷较重.全国平均单位耕地面积的畜禽氮污染负荷达138.13 kg/hm2,其中四川等6省市已达202.98 kg/hm2以上.该研究为全国和各省区农业发展规划和畜禽养殖结构调整提供参考.%In recent decades, China's livestock and poultry industry developed rapidly, and their wastes have become an important pollution source, and made a serious threat to China's environment. Due to the significant differences in natural conditions and economic development level in different provinces or regions, the scale and speed of livestock and poultry production show a large regional differences. Based on the statistical data of major livestock and poultry in recent 30 years of main provinces in China, we studied the spatial heterogeneity and temperal changes of livestock and poultry production and their annual growth rate, and further analzed their nitrogen pollution load per cultivated land area. The studied results show that, in recent years, China's livestock and poultry industry have developed rapidly, especially in the north and northeastern of China. The average annual growth rate of pigs, sheep