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利用等离子体炼制硅或硅铁的可行性研究

湖南冶金 1987年第4期 21-25页

作者：蒋国昌 j A.bakken 上海工业大学挪威Trond heim大学

一、前言硅铁或金属硅至今仍是埋弧电弧炉的产品。这一生产过程已有很大改进,因而现在当有效。当然,也还遗留着一些问题,使得这一生产过程尚不够完善。首先,这一过的物料平衡表明:Si的损失（以SiO的形式从炉内逸出）一般总要达到装入的S... 详细信息

一、前言硅铁或金属硅至今仍是埋弧电弧炉的产品。这一生产过程已有很大改进,因而现在当有效。当然,也还遗留着一些问题,使得这一生产过程尚不够完善。首先,这一过的物料平衡表明:Si的损失（以SiO的形式从炉内逸出）一般总要达到装入的SiO2 之10—15％。并且,Si的收得率低还总伴随着产生热损与大气污染。此外,在这一过程中,为维持炉料透气性又必须经常捣炉。看来,进一步完善这一过程的前景并不很光明。这就促使人们转而去寻求别的途径。等离子体正是其中的一种选择,特别是在用等离子体还原Cr2O3,MnO2 乃至TiO2的过程均已有成功的报告后更是如此。

关键词：生成反应三子等离子体 SIC 平衡常数硅铁可行性研究可行性分析

Modeling Post-Operative Cognitive Dysfunction in Zebrafish

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Advances in Alzheimer's Disease 2016年第3期5卷 126-141页

作者： Bill j. McElroy julie L. Mustard Syed Kamran Catherine P. jung Katie L. bakken Norbert W. Seidler Division of Basic Science Kansas City University Kansas City MO USA Department of Anesthesiology University of Missouri/Saint Luke’s Hospital Kansas City MO USA

Permanent post-operative cognitive dysfunction (POCD) is a grim outcome to an estimated 6% of elderly surgical patients. Volatile anesthetics impact neuronal tissue independent of effects attributed to the physical trauma of the surgery itself. While it is recognized that all aspects related to surgery may contribute to cognitive loss in some manner, the present paper focuses on the role of volatile anesthetics in promoting POCD. There is an increased risk of onset and progression of Alzheimer’s disease (AD) from POCD, implying that the neuropathogenesis between the two is similar. Human studies, being ethically limited in scope, require animal models as a substitute. While the literature using rodent models contains valuable information, we believe that the accessible and practical zebrafish will greatly enhance our further understanding of the molecular mechanism of POCD as it relates to AD. Disease genes and fundamental neurobehaviors of these teleost fish mirror those of mammals and humans, validating their use as a core research model for AD. Since the gradual senescence seen in zebrafish also resembles that found in humans, we numerically correlated the two lifespans, offering researchers a computational tool. Zebrafish, being aquatic animals, necessitates the use of miscible compounds, such as trifluoroethanol, whose anesthetic potency we are presenting. We also review the rodent and zebrafish literature relevant to POCD. Continued research with the leading-edge zebrafish unlocks the possibility that, in the future, perioperative intervention will prevent POCD.

关键词： Zebrafish Post-Operative Cognitive Dysfunction Dementia Aging Anesthesia

Reduction of N2O emissions by DMPP depends on the interactions of nitrogen sources(digestate vs. urea) with soil properties

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journal of Integrative Agriculture 2023年第1期22卷 251-264页

作者： LI Hao-ruo SONG Xiao-tong Lars Rbakken jU Xiao-tang College of Resources and Environmental Sciences China Agricultural UniversityBeijing 100193P.R.China State Key Laboratory of Urban and Regional Ecology Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085P.R.China College of Tropical Crops Hainan UniversityHaikou 570228P.R.China Faculty of Chemistry Biotechnology and Food ScienceNorwegian University of Life Science(NMBU)Ås 1430Norway

The inhibition of nitrification by mixing nitrification inhibitors(NI)with fertilizers is emerging as an effective method to reduce fertilizer-induced nitrous oxide(N_(2)O)*** additive 3,4-dimethylpyrazole phosphate(DMPP)apparently inhibits ammonia oxidizing bacteria(AOB)more than ammonia oxidizing archaea(AOA),which dominate the nitrification in alkaline and acid soil,***,the efficacy of DMPP in terms of nitrogen sources interacting with soil properties remains *** therefore conducted a microcosm experiment using three typical Chinese agricultural soils with contrasting pH values(fluvo-aquic soil,black soil and red soil),which were fertilized with either digestate or urea in conjunction with a range of DMPP *** the alkaline fluvo-aquic soil,fertilization with either urea or digestate induced a peak in N_(2)O emission(60μg N kg^(-1)d^(-1))coinciding with the rapid nitrification within 3 d following *** almost eliminated this peak in N_(2)O emission,reducing it by nearly 90%,despite the fact that the nitrification rate was only reduced by 50%.In the acid black soil,only the digestate induced an N_(2)O emission that increased gradually,reaching its maximum(20μg N kg^(-1)d^(-1))after 5–7 *** nitrification rate and N_(2)O emission were both marginally reduced by DMPP in the black soil,and the N_(2)O yield(N_(2)O-N per NO2–+NO3–-N produced)was exceptionally high at 3.5%,suggesting that the digestate induced heterotrophic *** the acid red soil,the N_(2)O emission spiked in the digestate and urea treatments at 50 and 10μg N kg^(-1)d^(-1),respectively,and DMPP reduced the rates substantially by nearly 70%.Compared with 0.5%DMPP,the higher concentrations of DMPP(1.0 to 1.5%)did not exert a significantly(P<0.05)better inhibition effect on the N_(2)O emissions in these soils(either with digestate or urea).This study highlights the importance of matching the nitrogen sources,soil properties and NIs

关键词： nitrous oxide digestate urea nitrification inhibitors DMPP alkaline soils acid soils

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Statistical distribution of geomechanical properties and‘Sweet Spots’identification in part of the upper bakken

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Petroleum Research 2023年第3期8卷 301-308页

作者： Nelson R.K.Tatsipie james j.Sheng Texas Tech University United States

Completions and Reservoir Quality are two key attributes that are used to characterize nonconventional hydrocarbon *** is because,for optimum exploitation of these unconventional assets,horizontal wells need to be drilled in“Sweet Spots”(i.e.,regions where Completions and Reservoir Quality are both superior).One way to quantify these qualities is to use reservoir and geomechanical *** properties can be estimated on a location basis from well logs,and then mapped over terrain using geostatistical *** study presents a‘Sweet Spots’identification workflow based on three performance indexes(Storage Potential Index,Brittleness Index,and Horizontal Stress Index)that can be used to quantify CQ and *** performance indexes are computed from petrophysical property volumes(of Young's Modulus,Bulk Modulus,Shear Modulus,Poisson's Ratio,Minimum Horizontal Stress,Volume of Shale,Total Organic Carbon,Thickness,and Porosity)which are in turn computed from well logs and geostatistical *** the end,the study offers a method to compare the predicted“Sweet Spots”against available production data via their correlation *** resulting reasonable formation property maps,the successful identification of‘Sweet Spots’,and a correlation coefficient of 0.88(between the predicted“Sweet Spots”and well production data)point to the potential of the proposed effort.

关键词： Sweet spots Sequential Gaussian simulation Storage potential index Brittleness index Horizontal stress index

产聚合物的菌种在多孔隙介质中的运移效率及稳定性研究

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国外油田工程 1999年第7期15卷 1-4页

作者： j.AParli A.K.Stepp 赵颖乔保林赵泳中原油田经济技术信息中心中原油田采收率研究所中原油田油层改造研究所

微生物采油方法实施的一个关键因素是微生物的运移。在调剖作业中。关键步骤是将微生物成功地放置于高渗层段并且避免引起近井眼区带的堵塞。其次，尽可能保持油层中聚合物的稳定，延长其降解时间。为了研究滞留性能。对几种类型的菌类... 详细信息

微生物采油方法实施的一个关键因素是微生物的运移。在调剖作业中。关键步骤是将微生物成功地放置于高渗层段并且避免引起近井眼区带的堵塞。其次，尽可能保持油层中聚合物的稳定，延长其降解时间。为了研究滞留性能。对几种类型的菌类在不同类型的多孔隙介质中进行了菌类的运移实验。这些多孔隙介质为油层现场岩心（bakken砂岩）贝雷砂岩和陶瓷岩心。评价了两组聚合物产出菌以及其它菌种。结果表明，在现场岩心中微生物滞留量比在贝雷岩心或者陶瓷岩心中高。不同的Lmesenteroides组显示了不同的运移和滞留。也进行了促进生长的营养物质存在与否的对比实验。以确定细菌繁殖如何影响运移。多孔介质中生物聚合物的长期稳定性和有效性也被验证。本文描述了正在进行的实验室试验以评价渗透率调整所开发的微生物系统。

关键词：多孔隙介质运移效率稳定性细菌采油微生物

产聚合物的菌种在多孔隙介质中的运移效率及稳定性研究

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石油石化节能 1999年第7期 1-4页

作者： j.AParli A.K.Stepp 赵颖乔保林赵泳中原油田油层改造研究所中原油田经济技术信息中心中原油田采收率研究所

关键词：多孔隙介质聚合物运移效率稳定性菌种

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计算确定美国威利斯顿盆地储层可变润湿性

测井技术 2018年第4期42卷 432-432页

作者： MERKEL R MCCHESNEY j TOMPKINS KE 杨兴琴(编译) 肖圣(审校) Calculated determination of variable wettability in the Middle bakken and Three Forks Williston Basin USA 不详

对于可变润湿性储层，采用基于饱和度模型的电阻率方法确定其地质储量会产生问题。当储层的润湿性从水湿-混湿-油湿变化时，阿尔奇饱和度指数（n）将随润湿性的变化而增大。成利斯顿盆地的中巴肯储层和斯里福克斯储层均属于这一类润湿... 详细信息

对于可变润湿性储层，采用基于饱和度模型的电阻率方法确定其地质储量会产生问题。当储层的润湿性从水湿-混湿-油湿变化时，阿尔奇饱和度指数（n）将随润湿性的变化而增大。成利斯顿盆地的中巴肯储层和斯里福克斯储层均属于这一类润湿性变化的地层。在2018年SPWLA年会上，Richard Merkel等人通过综舍分析三组舍测井、核磁共振测井、介电测井和岩心数据确定润湿性和阿尔奇饱和度指数（n）。

关键词：威利斯顿盆地润湿性储层可变核磁共振测井 SPWLA年会饱和度指数美国

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