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NUMERICAL sIMULATION FOR MEAsURING ATMOsPHERE CARBON POTENTIAL BY ELECTRIC REsIsTANCE METHOD

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Acta Metallurgica sinica(English Letters) 2000年第2期13卷 811-815页

作者： W.M. Zhang M.j. Hu Y.j. Li j.s. Pan and X. Chen( 1) Open Lab. of the Educational Ministry for High Temperature Material and Test, shanghai jiaotong University,shanghai 200030, China 2) Oregen Graduate Institute of science and Technology, UsA)

According to computer numerical simulation for measuring atmosphere carbon potential by electric resistance method (hot-wire method) and the experimental data, the paper point out that the measuring result dose not directly reflect the atmosphere carbon potential (Cg) but the average carbon content, and as a result, the change of electric resistance obviously lag to that of the atmosphere carbon potential. In order to correctly control the carbon potential by electric resistance method, the authors bring forward a function which is a better expression for the relationship between the average carbon content of the wire and the atmosphere carbon potential and ensures good carbon potential control.

关键词： electric resistance method carbon potential computer simulation

Two-stage Negative Adaptive Cluster sampling

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Communications in Mathematics and statistics 2020年第1期8卷 1-21页

作者： R.V.Latpate j.K.Kshirsagar Department of statistics and Centre for Advanced studies Savitribai Phule Pune UniversityPuneIndia Department of statistics NAC&S CollegeAhmednagarIndia

If the population is rare and clustered,then simple random sampling gives a poor estimate of the population *** such type of populations,adaptive cluster sampling is *** it loses control on the final sample ***,the cost of sampling increases *** overcome this problem,the surveyors often use auxiliary information which is easy to obtain and *** attempt is made through the auxiliary information to control the final sample *** this article,we have proposed two-stage negative adaptive cluster sampling *** is a new design,which is a combination of two-stage sampling and negative adaptive cluster sampling *** this design,we consider an auxiliary variablewhich is highly negatively correlatedwith the variable of interest and auxiliary information is completely *** the first stage of this design,an initial random sample is drawn by using the auxiliary ***,using Thompson’s(jAmstat Assoc 85:1050-1059,1990)adaptive procedure networks in the population are *** networks serve as the primary-stage units(PsUs).In the second stage,random samples of unequal sizes are drawn from the PsUs to get the secondary-stage units(ssUs).The values of the auxiliary variable and the variable of interest are recorded for these *** estimator is proposed to estimate the population total of the variable of interest.A new estimator,Composite Horwitz-Thompson(CHT)-type estimator,is also *** is based on only the information on the variable of *** of the above two estimators along with their unbiased estimators are *** this proposed methodology,sample survey was conducted at Western Ghat of Maharashtra,*** comparison of the performance of these estimators and methodology is presented and compared with other existing *** cost-benefit analysis is given.

关键词： Adaptive cluster sampling Two-stage cluster sampling Negative adaptive cluster sampling Two-stage NACs Regression estimator

脑瘤诱发的组织变化和皮层脑电图分析(英文)

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内蒙古大学学报（自然科学版） 2007年第4期38卷 390-402页

作者： járdánházy Anett járdánházy Tamás LUO Liao-fu Molnár joseph 匈牙利塞格特大学神经学系塞格特H-6720 内蒙古大学理工学院理论物理实验室呼和浩特010021 匈牙利塞格特大学医学微生物学和免疫微生物学学院塞格特H-6720

健康组织和肿瘤组织具有不同的代谢,结构和热力学特性.脑瘤的代谢和结构无序性导致其有较高的熵产生.两种组织不同的熵产生决定了熵由癌流向健康组织.脑瘤和正常细胞在熵和能量方面的差异诱发皮层不同的脑电信号.研究了28个脑瘤患者的... 详细信息

健康组织和肿瘤组织具有不同的代谢,结构和热力学特性.脑瘤的代谢和结构无序性导致其有较高的熵产生.两种组织不同的熵产生决定了熵由癌流向健康组织.脑瘤和正常细胞在熵和能量方面的差异诱发皮层不同的脑电信号.研究了28个脑瘤患者的脑电图并和健康人进行比较,观察到脑瘤患者脑电图频率的降低.多数情况中慢a lpha和theta波出现在肿瘤投影区,此可能与其高熵产生和向外的熵流有关.研究认为,脑瘤的持续高熵产生和热耗散及其它物理效应使得皮层电产生慢化,从而使肿瘤及其邻近的脑组织显示出频率较低的电活性.

关键词：脑瘤熵皮层电产生脑电图非线性参数关联维

Endurance Test of Biodiesel Fueled Tractor Engine

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journal of Agricultural science and Technology(B) 2011年第7期1卷 1025-1031页

作者： Y. j. Kim s. H. Park C. K. Kim D. H. Im Y. jang s. s. Kim Department of Agricultural Engineering National Academy of Agricultural Science Rural Development Administration Suwon441- 707 Republic of Korea R＆D Engine Team Daedong Industrial Co. Chang Nyong-Kun Kyungnam 635-806 Republic of Korea

A diesel engine for tractor was tested for 250 hours of durability with biodiesel fuel of 100%. An engine test cycle was designed based on the IsO test code of off-road vehicle. Eight test conditions, combination of three engine speeds and eight engine loads, were applied to the engine endurance test, and the engine was operated for eight hours in a day. Power output, fuel consumption rate, exhaust gas quality and particulate matter （PM） were measured and discussed. For the extensive 250 hours of the tractor diesel engine endurance test no significant changes of power output, fuel consumption rate, exhaust gas quality and PM were monitored and authors could not find any difference in the engine patterns of the two fuels of BDF100 and light oil. During all the engine endurance test conditions, no abrupt stopping was encountered but because of temperature down by the cold season the endurance test could not carried out for some periods. PMs were collected and the average F＇M was 0.027 g/kw which was far below than Tier 4 diesel engine PM of 0.3 g/kw h defined by Us EPA PM of the diesel engine clas,;. Overall even 100% biodiesel can be an alternative fuel for light oil for diesel engine operation with some considerations for cold sea：son use.

关键词： Endurance test biodiesel diesel engine power fuel consumption.

steady state heat transfer analysis in a rectangular moving porous fin

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Propulsion and Power Research 2020年第2期9卷 188-196页

作者： Partner L.Ndlovu Raseelo j.Moitsheki school of Computer science and Applied Mathematics University of the WitwatersrandJohannesburgPrivate Bag 3Wits2050South Africa standard Bank of south Africa.30 Baker street RosebankJohannesburg2196South Africa

In this article,the variation of temperature distribution and fin efficiency in a porous moving fin of rectangular profile is *** study is performed using Darcy's model to formulate the governing heat transfer differential *** approximate analytical solution is generated using the variational iteration method(VIM).The power series solution is validated by benchmarking it against the numerical solution obtained by applying the Runge-Kutta fourth order method.A good agreement between the analytical and numerical results is *** effects of porosity parameter,Peclet number and other thermo-physical parameters,such as the power index of heat transfer coefficient,convective-conductive parameter,radiative-conductive parameter,thermal conductivity gradient and non-dimensional ambient temperature on non-dimensional temperature are also studied and *** results indicate that the fin rapidly dissipates heat to the ambient temperature with an increase in the Peclet number,convection-radiation parameters and the porosity parameter.

关键词： Heat transfer Moving porous Darcy’s model Variational iteration method(VIM) Fin tip temperature

Is There still a Place for the staca Nail Plate in the Osteosynthesis of Trochanteric Fractures? Results from 52 Cases in a Regional Hospital in a Developing Country

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Open journal of Orthopedics 2018年第4期8卷 132-138页

作者： M. sawadogo H. Kafando A. j. I. Ouedraogo s. Ouedraogo A. s. Korsaga s. Tinto C. O. Ouedraogo C Darga surgery Department of the Regional Hospital Ouahigouya Burkina Faso Department of Orthopedics-Traumatology Yalgado Ouedraogo University Hospital Ouagadougou Burkina Faso

The synthesis of trochanteric fractures has evolved considerably since the use of the staca nail-plate in 1964. This implant, despite its age, remains a solid and reliable material for the synthesis of this type of fracture. Objective: To evaluate the anatomo-clinical and functional results of staca nail-plate osteosynthesis of trochanteric fractures at the Regional University Hospital of Ouahigouya in Burkina Faso. Methods: We performed a retrospective study of 52 trochanteric fractures treated by staca nail-plate in the regional university hospital of Ouahigouya between june 2007 and june 2017. There were 10 women and 42 men with a mean age of 61 years (range 17 years to 89 years). Ten stable type I and II of Ender classification fractures and 42 unstable fractures were recorded, including four pseudarthrosis and six vicious calluses. The anterolateral approach was used in all cases. In the absence of an image intensifier, we performed an arthrotomy to identify the femoral neck and set up a guide pin. Results: The reduction was satisfactory with stable synthesis in 39 cases. At last follow-up, consolidation was effective in all patients, except one. Two cases of acetabular protrusion were noted, requiring early removal of equipment. Fifty-one patients were autonomous. The overall results were considered satisfactory. Conclusion: The staca nail-plate remains a means of solid osteosynthesis. Although it is no longer relevant in industrialized countries, it provides comparable results to new implants for the osteosynthesis of trochanteric fractures. Because of its low cost, its abandonment is not justified in low-income countries.

关键词： Fracture Trochanter staca Nail-Plate Burkina Faso

How to express tumours using membrane systems

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Progress in Natural science:Materials International 2007年第4期17卷 449-457页

作者： Miguel A. Gutiérrez-Naranjo Mario j. Pérez-jiménez Agustín Riscos-Núez Francisco j. Romero-Campero Department of Computer science and Artificial Intelligence University of Seville Avda. Reina Mercedes s/n41012SevillaSpain

In this paper we discuss the potential usefulness of membrane systems as tools for modelling tumours. The approach is followed both from a macroscopic and a microscopic point of view. In the first case, one considers the tumour as a growing mass of cells, focusing on its external shape. In the second case, one descends to the microscopic level, studying molecular signalling pathways that are crucial to determine if a cell is cancerous or not. In each of these approaches we work with appropriate variants of membrane systems.

关键词： tumour membrane system modeling.

Risk factors for Barrett’s oesophagus and oesophageal adenocarcinoma:Results from the FINBAR study

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World journal of Gastroenterology 2007年第10期13卷 1585-1594页

作者： Lesley A Anderson RG Peter Watson seamus j Murphy Brian T johnston Harry Comber jim Mc Guigan john V Reynolds Liam j Murray Centre for Clinical and Population sciences Queen's UniversityBelfastNorthern Ireland Royal Group of Hospitals BelfastNorthern Ireland National Cancer Registry CorkIreland st.james's Hospital DublinIreland

AIM:To investigate risk factors associated with Barrett's oesophagus and oesophageal ***:This all-Ireland population-based case-control study recruited 224 Barrett's oesophagus patients,227 oesophageal adenocarcinoma patients and 260 *** participants underwent a structured interview with information obtained about potential lifestyle and environmental risk ***:Gastro-oesophageal reflux was associated with Barrett's [OR 12.0(95% CI 7.64-18.7)] and oesophageal adenocarcinoma [OR 3.48(95% CI 2.25-5.41)].Oesophageal adenocarcinoma patients were more likely than controls to be ex-or current smokers [OR 1.72(95% CI 1.06-2.81)and OR 4.84(95% CI 2.72-8.61)respectively] and to have a high body mass index [OR 2.69(95% CI 1.62-4.46)].No significant associations were observed between these risk factors and Barrett's *** but not vegetables were negatively associated with oesophageal adenocarcinoma [OR 0.50(95% CI 0.30-0.86)].CONCLUsION:A high body mass index,a diet low in fruit and cigarette smoking may be involved in the progression from Barrett's oesophagus to oesophageal adenocarcinoma.

关键词： Barrett's oesophagus Oesophagealadenocarcinoma smoking Gastro-oesophageal reflux Body mass index Diet Case-control

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行距对大豆竞争有限资源的影响

大豆科学 2004年第3期23卷 215-221页

作者：刘晓冰金剑王光华 s.j.Herbert M.Hashemi 中国科学院东北地理与农业生态研究所美国麻省大学植物与土壤科学系美国阿姆斯特市01003

不同行距引起大豆生长竞争。当某一因子的直接供应不能满足群体生长的需要而成为限制因子时 ,竞争便开始。本文主要从基因型、光、水、养分和杂草等 5方面综述过去 4 0年行距变化对大豆竞争资源的影响。研究表明 ,不同品种对行距变化的... 详细信息

不同行距引起大豆生长竞争。当某一因子的直接供应不能满足群体生长的需要而成为限制因子时 ,竞争便开始。本文主要从基因型、光、水、养分和杂草等 5方面综述过去 4 0年行距变化对大豆竞争资源的影响。研究表明 ,不同品种对行距变化的反映不同 ,其依赖于季节降雨和灌溉。有限结荚习性类型可获得较高产量 ,抗倒伏的大豆品种适于窄行种植。无限结荚习性大豆在一定的行距条件下也可获得最佳产量。与宽行大豆种植相比 ,窄行大豆栽培增加光截获 (LI) ,其原因在于LAI、消光系数的增加及分枝类型品种的选择。水分利用效率和蒸发蒸腾作用不受行距影响 ,但在灌溉条件下产量增加。行距变化对养分吸收影响较大 ,随着行距的减小 ,植株产量和N、P、K的吸收均增加 ,且增加幅度受施肥水平制约。行距不影响N素的固定。行距不影响杂草密度、萌发高峰及持续时期 ,但在窄行栽培条件下可减少杂草的数量及干重 ,再配以适量的除草剂可获得良好的除草效果。不同行距条件下的大豆生理反应、养分和水分的吸收及转运 ,不同冠层的光能利用以及土壤环境的变化仍需进一步深入研究。

关键词：行距大豆生长竞争水分吸收养分吸收杂草光