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底水油藏原油的开采 被引量:6
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作者 M.r.islam 殷海军 《国外油田工程》 1999年第1期6-8,共3页
在高含水饱和区与含油区相连的“底水”储层仍有数十亿bbl原油没有采出。一般来说,这类储层在一次采油期期间含水上升特别快,一次采油量很低。如果没有含水层,这些油藏最适合于进行注水开发,否则,传统的注水开发效果不佳;如果原... 在高含水饱和区与含油区相连的“底水”储层仍有数十亿bbl原油没有采出。一般来说,这类储层在一次采油期期间含水上升特别快,一次采油量很低。如果没有含水层,这些油藏最适合于进行注水开发,否则,传统的注水开发效果不佳;如果原油粘度高,效果就更差了。最近有人提出了几项改善此类油藏注水效果的技术与生产方法,这是本文论述的主题。 展开更多
关键词 底水油藏 原油 粘度 注水开发 油田注水
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Ecofriendly Management of Wheat Panicle Blast Caused by Magnaporthe oryzae triticum 被引量:2
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作者 A. A. Meshuk F. M. Aminuzzaman +2 位作者 M. r. islam K. Nahar A. Sharmin 《Agricultural Sciences》 2023年第12期1751-1765,共15页
In this study, three wheat varieties were tested to determine seed germination and the incidence of Magnaporthe oryzae triticum (MoT). Among these varieties, BARI Gom 24 (Prodip) wheat seed exhibited the highest seed ... In this study, three wheat varieties were tested to determine seed germination and the incidence of Magnaporthe oryzae triticum (MoT). Among these varieties, BARI Gom 24 (Prodip) wheat seed exhibited the highest seed germination rate (93%) but also had the highest incidence (30%) of MoT. To manage blast disease in an ecofriendly manner, seven treatments were employed: T<sub>1</sub> = Control, T<sub>2</sub> = Garlic clove extracts, T<sub>3</sub> = Aloe vera leaf extracts, T<sub>4</sub> = Black cumin seed extracts, T<sub>5</sub> = Neem leaf extracts, T<sub>6</sub> = Nativo 75 WG, and T<sub>7</sub> = Provax 200 WP. The experiment was conducted using a Randomized Complete Block Design (RCBD) layout with three replications using Prodip wheat variety that exhibited highest MoT infection severity based on laboratory analysis among collected varieties. Data were collected on blast disease incidence (%), disease severity, and various growth and yield parameters of wheat. The experiment’s results indicated that among all the treatments, T<sub>7</sub> (Seed treatment with Provax 200 WP) and T<sub>5</sub> (Foliar spraying with Neem leaf extract) performed better in controlling blast disease in wheat. The lowest blast disease incidence (%) was observed with T<sub>7</sub> (Provax 200 WP), with values of 7.86, 9.86, and 10.19 recorded during the milking stage, soft dough stage, and hard dough stage of wheat, respectively. T<sub>5</sub> (Neem leaf extract) also demonstrated a statistically equivalent reduction in blast disease incidence (%). In terms of disease severity, T<sub>7</sub> (Seed treatment with Provax 200 WP) showed the lowest values of 1.03, 1.23, and 1.63 during the milking stage, soft dough stage, and hard dough stage of wheat, respectively. Foliar spraying with neem leaf extract also exhibited similar result as of Provax 200 WP regarding panicle blast severity. As a result of these findings, it can be concluded that T<sub>5</sub> (Neem leaf extract) is recommended as an ecofriendly management approach for blast 展开更多
关键词 WHEAT Panicle Blast Magnaporthe oryzae triticum BOTANICALS MANAGEMENT
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In Vitro Efficacy Assessment of Botanical Extracts against Botrytis gladiolorum Causing Gladiolus Leaf Blight 被引量:1
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作者 M. A. rahaman M. S. M. Chowdhury +4 位作者 M. r. islam N. Sultana M. r. Ali N. Akhter F. M. Aminuzzaman 《American Journal of Plant Sciences》 2023年第10期1146-1161,共16页
An experiment was conducted at the Mycology laboratory, Department of Plant Pathology, Sher-e-Bangla Agricultural University, Dhaka, Bangladesh to find out the efficacy of selected botanical extracts against Botrytis ... An experiment was conducted at the Mycology laboratory, Department of Plant Pathology, Sher-e-Bangla Agricultural University, Dhaka, Bangladesh to find out the efficacy of selected botanical extracts against Botrytis gladiolorum (Bg) causing gladiolus leaf blight. Infected leaves samples were collected from gladiolus farmers’ field and brought to the laboratory for study. Ten selected botanicals were used against the colony growth of (Bg). The botanicals were Mehendi, Chrysanthemum, Basil (Tulsi), Onion, Neem, Bael, Arjuna, Garlic, Aloevera (Ghritkumary) and Turmeric. Botanical extracts were applied at the rate of 5%, 10% and 20%. The radial mycelia growth was found minimum (11.60 mm) in garlic extract treated plate at the dose of 5% at 5 DAI, which was statistically similar with turmeric extract treated (14.00 mm) plate and the inhibition of growth was 60% and 51.72%, respectively. Similar trend was found at 10 DAI and 15 DAI. At 15 DAI, garlic and turmeric extract gave the best result against Bg, which was statistically similar with onion (50.07% inhibition) and mehendi (49.93%). All botanicals showed significantly different results over control and found effective in reducing the mycelial growth at the dose of 10%. At 5 DAI, no radial mycelia growth was found in garlic treated plate, which was statistically similar with onion treated plate, means that the inhibition of growth was 100%. Similar trend was also found at 10 DAI, and 15 DAI but at 15 DAI, onion (30.20 mm) gave the statistically similar results with Garlic (30.10 mm) and the mycelia growth inhibition was (57.70%) and (57.84%), respectively. In case of 20% dose, garlic extract showed the best result at 5 DAI and the radial mycelia growth was found minimum (00.00 mm) which was statistically similar with onion extract treated (00.00 mm) plate and turmeric extract treated plate. The inhibition of growth was 100%. At 15 DAI, the inhibition of fungal growth was found (73.74%), (71.23%) and (66.90%), respectively with treated by turmeric (18.80 mm), garl 展开更多
关键词 GLADIOLUS Leaf Blight Botrytis gladiolorum Botanical Extracts Ecofriendly Management
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一种新型微生物封堵工艺的实验研究 被引量:7
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作者 LirongZhong M.r.islam +1 位作者 彭裕生 黄春意 《国外油田工程》 1998年第4期12-13,25,共3页
细菌的新陈代谢活动,使矿物直接从介质中沉淀,它可以通过改变原始地质环境使矿物直接以介质中沉淀。矿物沉积和死亡的细菌尸体保留下来。产生胶结或堵塞岩石的孔隙。应用Baoilluspasteurii细菌更有益于CaCo_3沉淀,以致细菌成因的胶... 细菌的新陈代谢活动,使矿物直接从介质中沉淀,它可以通过改变原始地质环境使矿物直接以介质中沉淀。矿物沉积和死亡的细菌尸体保留下来。产生胶结或堵塞岩石的孔隙。应用Baoilluspasteurii细菌更有益于CaCo_3沉淀,以致细菌成因的胶结在数小时内就能产生。这样就可利用这一过程封堵产水区的裂缝,以防止高产水。同样,这种技术也可用来固结非胶结裂缝中的砂岩。因此。利用微生物产生矿物沉积使沉积物和岩层中引起自然胶结和封堵。并把它作为提高采收率的选择性封堵的方法之一。为了研究应用微生物封堵工艺进行修补裂缝的可能性,LirongZhong等人进行了一系列试验。下面将其试验过程和结果作扼要叙述。 展开更多
关键词 提高采收率 微生物 封堵工艺 细菌采油
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Reduced tillage with residue retention improves soil labile carbon pools and carbon lability and management indices in a seven-year trial with wheat-mung bean-rice rotation 被引量:3
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作者 rafeza BEGUM Mohammad M.r.JAHANGIr +3 位作者 Mohammad JAHIrUDDIN Mohammad rafiqul islam Shaikh M.BOKHTIAr Khandakar r.islam 《Pedosphere》 SCIE CAS CSCD 2022年第6期916-927,共12页
Soil total organic carbon(TOC)is a composite indicator of soil quality with implications for crop production and the regulation of soil ecosystem services.Research reports on the dynamics of TOC as a consequence of so... Soil total organic carbon(TOC)is a composite indicator of soil quality with implications for crop production and the regulation of soil ecosystem services.Research reports on the dynamics of TOC as a consequence of soil management practices in subtropical climatic conditions,where microbial carbon(C)loss is high,are very limited.The objective of our study was to evaluate the impact of seven years of continuous tillage and residue management on soil TOC dynamics(quantitative and qualitative)with respect to lability and stratification under an annual wheat-mung bean-rice cropping sequence.Composite soil samples were collected at 0-15 and 15-30 cm depths from a three-replicate split-plot experiment with tillage treatment as the main plots and crop residue levels as the sub-plots.The tillage treatments included conventional tillage(CT)and strip tillage(ST).Residue levels were high residue level(HR),30%of the plant height,and low residue level(LR),15%.In addition to TOC,soil samples were analyzed for particulate organic C(POC),permanganate oxidizable C(POXC),basal respiration(BR),specific maintenance respiration rate(qCO_(2)),microbial biomass C(MBC),potentially mineralizable C(PMC),and TOC lability and management indices.The ST treatment significantly increased the TOC and labile C pools at both depths compared with the CT treatment,with the effect being more pronounced in the surface layer.The HR treatment increased TOC and labile C pools compared with the LR treatment.The ST+HR treatment showed significant increases in MBC,metabolic quotient(qR),C pool index(CPI),C lability index(CL_(I)),and C management index(CMI),indicating improved and efficient soil biological activities in such systems compared with the CT treatment.Similarly,the stratification values,a measure of soil quality improvement,for POC and MBC were>2,indicating improved soil quality in the ST+HR treatment compared with the CT treatment.The ST+HR treatment not only significantly increased the contents of TOC pools,but also their stocks.The CMI was co 展开更多
关键词 basal respiration carbon management index carbon stratification particulate organic carbon permanganate oxidizable carbon total organic carbon
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Stimuli-responsive polymeric materials for human health applications 被引量:3
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作者 Molla r.islam Yongfeng Gao +3 位作者 Xue Li Qiang Matthew Zhang Menglian Wei Michael J.Serpe 《Chinese Science Bulletin》 SCIE EI CAS 2014年第32期4237-4255,共19页
Stimuli-responsive polymers have the extraordinary ability to change their physical and/or chemical state after they‘‘detect’’a change in their environment;their response depends dramatically on their chemical com... Stimuli-responsive polymers have the extraordinary ability to change their physical and/or chemical state after they‘‘detect’’a change in their environment;their response depends dramatically on their chemical composition.This property has been used for a plethora of applications;this review highlights their utility for human health.Specifically,this review will highlight efforts in the areas of sensing and biosensing,antimicrobial/antifouling coatings,tissue engineering and regenerative medicine,and drug delivery.Specific examples are given in each of these areas,with some focus on our work engineering poly(Nisopropylacrylamide)-based microgels and other responsive systems. 展开更多
关键词 聚合物材料 刺激响应性 人体健康 应用 N-异丙基丙烯酰胺 化学状态 生物传感 组织工程
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User-centered development and performance assessment of a modular full-body exoskeleton (AXO-SUIT) 被引量:1
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作者 Shaoping Bai M.r.islam +1 位作者 Valerie Power Leonard OŚullivan 《Biomimetic Intelligence & Robotics》 2022年第2期9-16,共8页
This paper presents the design and preliminary performance assessment of a full-body assistive exoskeleton(AXO-SUIT)for older adults.AXO-SUIT is a system that consists of separate lower-body and upper-body modular exo... This paper presents the design and preliminary performance assessment of a full-body assistive exoskeleton(AXO-SUIT)for older adults.AXO-SUIT is a system that consists of separate lower-body and upper-body modular exoskeletons,which can be combined to form a full-body system to provide flexible physical assistance as needed.The full-body exoskeleton comprises 27 degrees of freedom(dof),of which 17 are passive and 10 active.It can assist people in walking,standing,carrying and handling tasks.A user-centered design approach was adopted throughout the development of the exoskeleton.This paper describes the design process of AXOSUIT,involving a review of user needs,a kinematic and kinetic motion study,and innovative system design.Tests with the developed systems were conducted on selected end-user subjects,covering both performance evaluations at different levels and useability testing.End-user testing results show the effectiveness of the exoskeleton in providing flexible physical assistance. 展开更多
关键词 Exoskeletons Physical assistance for the elderly User-centered design Performance assessment
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No-till and conservation agriculture in the United States:An example from the David Brandt farm,Carroll,Ohio 被引量:1
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作者 r.islam r.reeder 《International Soil and Water Conservation Research》 SCIE 2014年第1期97-107,共11页
No-till(NT)farming(conservation agriculture)began in the US in the 1960s.The state of Ohio has a university research location that began no-till research in 1962.A few innovative Ohio farmers,including NT pioneers Dav... No-till(NT)farming(conservation agriculture)began in the US in the 1960s.The state of Ohio has a university research location that began no-till research in 1962.A few innovative Ohio farmers,including NT pioneers David Brandt and Bill Richards,were early adopters of the new conservation practice.Initially,no-till was most successful on sloping,well drained soils,then with improvements to the system,including cover crops,it became more widely adopted on all soil types.David Brandt was an enthusiastic learner and teacher of no-till practices,working with chemical company representatives and Cooperative Extension Specialists to demonstrate the system.David Brandt’s cooperation with Ohio State University researchers continues to provide a valuable site for studying the long term changes in soil health and ecosystem services.Results showed that total microbial biomass as one of the soil biological health indicators significantly increased with an associated decrease in carbon(C)loss under NT compared with conventional tilled soil(CT).Under NT,there was significantly higher total C and total N compared to CT.Active C,as a composite measure of soil health,significantly increased with NT.When cover crops,especially cover crop cocktail mixes,were used,NT substantially improved soil health.Long-term NT with cover crop cocktail mixes significantly increased the soil aggregate stability,compared with CT.The overall rate of C sequestration by NT suggested that the soils on the Brandt farm act as a consistent sink of atmospheric CO2 although this tends to level off after about 20 years.The Brandt farm showed that crop yields are increased under long-term NT with cover crops mixes.Results suggested that starting with a cover crop when switching from CT to NT,is more likely to ensure success and to maintain economic crop yields.Another early adopter,Bill Richards,from Circleville,Ohio,also became a national leader and promoter of no-till farming.He served as head of the United States Department of Agriculture’s Natural Reso 展开更多
关键词 Innovation Eco-farming Corn SOYBEANS Wheat Cover crops Carbon sequestration Soil organic matter AGROECOSYSTEMS Carbon management index Farm bill Government policy
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一种新的气水合物分解技术 被引量:1
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作者 M.r.islam 吴江华 《天然气地球科学》 EI CAS CSCD 1998年第3期80-86,共7页
在阿拉斯加北部斜坡以水合物形式赋存有大量的天然气,开采却很难。以往的研究主要集中于对气水合物储集层的蒸气和/或热盐水刺激法。但是,由于永冻层和储集层高压力的存在,使得常规的热开采技术变得不适用。该文研究采取电磁加热法分解... 在阿拉斯加北部斜坡以水合物形式赋存有大量的天然气,开采却很难。以往的研究主要集中于对气水合物储集层的蒸气和/或热盐水刺激法。但是,由于永冻层和储集层高压力的存在,使得常规的热开采技术变得不适用。该文研究采取电磁加热法分解固态气水合物的可能性,并进行了一系列的数学模拟实验以证实这种开采技术的可行性。 展开更多
关键词 气水合物 分解 电磁加热 数学模拟 天然气
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石油科技研究的未来发展方向
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作者 S.L.Wellingtom M.r.islam +2 位作者 张运东 杨虹 薛红兵 《世界石油工业》 2003年第6期32-35,共4页
最近20年来,由于油价波动引发的公司重组、兼并和裁员,使得许多研究机构关闭,油公司对科研项目的支持也有所降低.长期研究项目的减少造成创新思维的不足,很多研究工作仅仪为了满足降低成本的需要而进行技术改进。
关键词 石油企业 石油价格 采收率 储层 市场分析 人力资源
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A Survey on Fault Diagnosis and Fault Tolerant Methodologies for Permanent Magnet Synchronous Machines 被引量:7
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作者 Erphan A.Bhuiyan Md.Maeenul Azad Akhand +7 位作者 Sajal K.Das Md.F.Ali Z.Tasneem Md.r.islam D.K.Saha Faisal r.Badal Md.H.Ahamed S.I.Moyeen 《International Journal of Automation and computing》 EI CSCD 2020年第6期763-787,共25页
This paper presents a comprehensive survey of fault diagnosis and fault tolerant approaches for permanent magnet synchronous machines(PMSM).PMSMs are prominent in the pervading usage of electric motors,for their high ... This paper presents a comprehensive survey of fault diagnosis and fault tolerant approaches for permanent magnet synchronous machines(PMSM).PMSMs are prominent in the pervading usage of electric motors,for their high efficiency,great robustness,reliability and low torque inertia.In spite of their extensive appliance,they can be quite non-resilient and inadequate in operation when faults appear in motor drive apparatus such as inverters,stator windings,sensors,etc.These may lead to insulation failure,torque fluctuations,overcurrent or even system collapse.On that account,fault diagnosis and fault tolerant methods are equipped to enhance the stability and robustness in PMSMs.Progressive methodologies of PMSM fault diagnosis and tolerance are classified,discussed,reviewed and compared in this paper,beginning with mat hematical modeling of PMSM and then scrutinizing various fault conditions in PMSMs.Finally,the scope of research on the topic is highlighted.The contribution of this review is to emphasize optimistic schemes and to assist researchers with the latest trends in this field for future directions. 展开更多
关键词 Permanent magnet synchronous machine(PMSM) fault diagnosis fault tolerant control system(FTCS) fault detection stability.
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Identification of Wheat-Barley 2H Alien Substitution Lines 被引量:6
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作者 原亚萍 陈孝 +2 位作者 肖世和 A.K.M.r.islam 辛志勇 《Acta Botanica Sinica》 CSCD 2003年第9期1096-1102,共7页
The genetic constitution of fifteen materials derived from the cross wheat (Triticum aestivum L. cv. 'Chinese Spring') X barley (Hordeum vulgare L. cv. 'Betzes') was analyzed, and six disomic alien sub... The genetic constitution of fifteen materials derived from the cross wheat (Triticum aestivum L. cv. 'Chinese Spring') X barley (Hordeum vulgare L. cv. 'Betzes') was analyzed, and six disomic alien substitution lines were screened by GISH. The chromosome configurations in pollen mother cells at meiotic metaphase I (PMCs M I) of F, from each disomic substitution line respectively crossed with double ditelocentric lines 2A, 2B and 2D of 'Chinese Spring' were observed, and a set of wheat-barley disomic alien substitution lines 2H(A), 2H(B) and 2H(D) were obtained. The RFLP analysis with the probe psr131 on the short arm of wheat homeologous group 2 combining with four restriction enzymes were carried out. The results indicated that the probe psr131 could be used as molecular marker to tag the barley chromosome 2H. The barley chromosome 2H had good genetic compensation ability for wheat chromosomes 2B and 2D in vitality and other agronomic characters. The result of testing seed was that the wheat appearance starch quality had been changed from the half-farinaceous of 'Chinese Spring' to the half-cutin of substitution lines by transferring the barley chromosome 2H to wheat. 展开更多
关键词 WHEAT BARLEY substitution line genomic in situ hybridization (GISH) RFLP
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Towards next generation Internet of Energy system: Framework and trends
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作者 Muqit Farhan Tanzim N.reza +11 位作者 Faisal r.Badal Md.r.islam S M Muyeen Z.Tasneem Md.Mehedi Hasan Md.F.Ali Md.H.Ahamed S.H.Abhi Md.Manirul islam Subrata K.Sarker Sajal K.Das Prangon Das 《Energy and AI》 2023年第4期660-681,共22页
The quickening propensity of growth within the areas of information and communications technology and en-ergy networks has triggered the emergence of a central idea termed as Internet of Energy(IoE).Such a concept rel... The quickening propensity of growth within the areas of information and communications technology and en-ergy networks has triggered the emergence of a central idea termed as Internet of Energy(IoE).Such a concept relates the internet of things,which is the term used in describing the usage of sophisticated digital control devices with the capability of transmitting data via IT systems.The concept of an interconnected energy network is being formed in the upcoming days through upgrades in the field of intelligent energy systems to control real-time energy optimization and management.The energy industry has had a sustained expansion,reaching the IoE milestone and continuing to this cutting-edge power system,which is the next generation of IoE.A directional pathway from the traditional power system to the IoE has been conducted in this research work by addressing the importance of integrating the smart transmission and communication infrastructure,smart metering,pricing and energy management scheme.A detailed investigation of the IoE with respect to technical angles,such as communication architecture,IoE on the supply&demand side,and IoE protocol based on fundamental elements and essential technologies has been carried out to indicate the blueprint and jurisdiction complexity.The inte-gration,security and energy management challenges may deviate the performance of the IoE technology that has been focused with proper control issues and solutions.Finally,a directional framework to establish the next-generation IoE system has been constructed with future scopes to insure higher resiliency,cyber-security and stability. 展开更多
关键词 Internet of Energy IOT MICROGRID Smart grid Virtual power plant Next generation power system
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Power Quality Improvement of Distribution Network Using BESS and Capacitor Bank 被引量:3
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作者 F.r.islam A.Lallu +2 位作者 K.A.Mamun K.Prakash N.K.roy 《Journal of Modern Power Systems and Clean Energy》 SCIE EI CSCD 2021年第3期625-632,共8页
The power demand around the world is increasing rapidly.The aging distribution network architectures are used by the existing utility companies to deliver power to the consumers,which significantly affects the reliabi... The power demand around the world is increasing rapidly.The aging distribution network architectures are used by the existing utility companies to deliver power to the consumers,which significantly affects the reliability,stability and quality of the delivered power.Different techniques such as compensation devices have been used by power system engineers and researchers to maintain the quality of power transmitted to end users.In this paper,wattage and volt-amp reactive(VAR)planning scheme has been proposed by using the combination of battery energy storage systems(BESS)and compensators to deal with the vulnerability of networks to voltage drop and system inefficiency.The cost-effective combination of BESS and shunt capacitor bank will then be analyzed to indicate the benefit of the proposed scheme. 展开更多
关键词 Battery energy storage system(BESS) shunt capacitor bank reliability stability quality volt-amp reactive(VAR)planning distribution network
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高等油藏模拟
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作者 M.rislam 刘晓红 《国外科技新书评介》 2010年第10期14-14,共1页
在油藏模拟软件问世之前,工程师们一般需要通过大量的钻井来寻求提取原油和天然气的最佳途径。如今,即使利用现有的高精密油藏模拟软件,油藏模拟仍有许多未知数。因为油藏模拟研究是非常主观化的,而且随着模拟软件的不同而不同。本... 在油藏模拟软件问世之前,工程师们一般需要通过大量的钻井来寻求提取原油和天然气的最佳途径。如今,即使利用现有的高精密油藏模拟软件,油藏模拟仍有许多未知数。因为油藏模拟研究是非常主观化的,而且随着模拟软件的不同而不同。本书针对现有方法的不足,从一个全新视角分析油藏模拟,首次提出了油藏模拟方程式的可变性和符合物理学的多解法,而不是采用线性化的数学解法,为油藏发展提供了更为科学的预测工具。 展开更多
关键词 油藏模拟软件 数学解法 预测工具 天然气 工程师 高精密 未知数 物理学
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小麦和大麦间的染色体重组
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作者 A.K.M.r.islam K.W.Shepherd +1 位作者 熊寿福 竭润生 《大麦科学》 1994年第3期47-47,共1页
关键词 小麦 大麦 染色体 重组
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