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CO_2封存技术为提高油气产量开辟了新的领域 被引量:6
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作者 guntis Moritis 汪丽丽 闫建文 《国外油田工程》 2004年第1期3-5,共3页
对于石油和天然气的开采者来说 ,注CO2 能够增加石油、天然气的产量。对CO2 进行封存 ,既为他们提供了机会 ,同时也为这些开采者增加了潜在的费用。
关键词 油层注气 二氧化碳 封存 石油采收率 天然气储藏 含水层
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Non-paraneoplastic Anti-NMDAR Encephalitis: First Confirmed Adult Case Report in Latvia
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作者 Dace Ziemele Marija Litvi,nenko +3 位作者 guntis Karelis Viktorij a Kenina Lana Vainsteine Marite Karlovska 《Journal of Pharmacy and Pharmacology》 2018年第2期123-129,共7页
Anti-NMDAR (Anti-N-Methyl-D-aspartic acid) encephalitis is a rare autoimmune condition mainly affecting young women. It is associated with an underlying tumor in about 50% of reported cases. Antibodies directed agai... Anti-NMDAR (Anti-N-Methyl-D-aspartic acid) encephalitis is a rare autoimmune condition mainly affecting young women. It is associated with an underlying tumor in about 50% of reported cases. Antibodies directed against the GIuN1 subunit of the NMDA receptor are responsible for the disease pathogenesis and their detection in the patient's serum and cerebrospinal fluid are required to make a definite diagnosis. Classical clinical presentation consists of flu-like symptoms, followed by psychiatric disturbances and impaired consciousness, epileptic seizures and movement disorders. During the past decade, it has become an emerging area of research and discussion as more than 1,000 cases have been reported since the first description of this specific disease entity in 2007. Despite a rather typical clinical course it is frequently diagnosed and treated with a delay up to many months. Overall prognosis tends to be favorable. However, it strongly depends on early diagnosis and rapid treatment initiation. While diagnostic criteria for probable and definite anti-NMDAR encephalitis have been proposed, there are no evidence based guidelines for specific treatment strategies. Glucocorticoids, plasma exchange and IVIG are generally used as 1 st line treatment, in patients who do not respond, 2nd line treatment with Cyclophosphamide or Rituximab is used. We report a case of a confirmed non-paraneoplastic anti-NMDAR encephalitis with a rather classical manifestation in a Latvian woman who is first hospitalized in a psychiatric clinic then transferred to an ICU (intensive care unit), treated with glucocorticoids, plasma exchange and later Cyclophosphamide with a good outcome. 展开更多
关键词 Anti-NMDAR encephalitis non-paraneoplastic PSYCHOSIS immunomodulatory therapy Cyclophosphamide.
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美国的油气生产在很大程度上依赖于低产井
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作者 guntis Moritis 高贵生 《国外石油动态》 2005年第17期18-23,共6页
正如州际油气协定委员会(IOGCC)最近研究表明的那样,边际井和低产井为美国的油气生产做出了巨大贡献。研究表明,2003年美国约有400,000口低产油井年产原油3.14亿桶,260,000口低产气井年产气约1.5万亿立方英尺(表1)。
关键词 油气生产 低产井 美国 低产油井 低产气井 委员会 边际井 原油
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提高油田采收率的新兴工艺技术
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作者 guntis Moritis 田兴国 +1 位作者 山其坤 孙丽娟 《国外油田工程》 2002年第2期4-6,34,共4页
20世纪 90年代是提高油田采收率工艺技术发展最快的10年。实现了加速采油、降低成本、提高油田采收率的目标。本文介绍了八种新兴采油工艺技术 ,目前存在并需要解决的一些问题 。
关键词 油田 提高采收率 工艺技术 复杂完井 激化油水井 人工升举
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大型上游项目瞄准世界能源需求
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作者 guntis Moritis 宋立臣(译) 《国外石油动态》 2007年第1期1-15,共15页
未来几年内,许多项目的启动将会在很大程度上满足世界能源需求的预计增长。 表1中列出了很多主要的超大型项目,它们预计会增加巨额的油气产量。所列出的项目包括单个油田的开发以及使油田进行生产所需的相关基础设施项目。这些项目... 未来几年内,许多项目的启动将会在很大程度上满足世界能源需求的预计增长。 表1中列出了很多主要的超大型项目,它们预计会增加巨额的油气产量。所列出的项目包括单个油田的开发以及使油田进行生产所需的相关基础设施项目。这些项目包括: 展开更多
关键词 基础设施项目 能源需求 世界 瞄准 上游 油气产量 超大型 预计
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美国更多的EOR项目启动,但产量继续递减
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作者 guntis Moritis 谢力(译) 《国外石油动态》 2008年第12期1-8,共8页
油气杂志两年一次的提高石油采收率(EOR)调查显示,美国的EOR项目数比两年前的上一次调查增加了。尽管目前的调查列出了更多的项目,但美国EOR项目的总产量要少于上一次的调查。
关键词 EOR项目 总产量 美国 石油采收率
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Effects of afforestation of agricultural land with grey alder(Alnus incana(L.) Moench)on soil chemical properties, comparing two contrasting soil groups
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作者 Oļģerts Nikodemus Dārta Kaupe +3 位作者 Imants Kukuļs guntis Brūmelis Raimonds Kasparinskis Iluta Dauškaneand Agita Treimane 《Forest Ecosystems》 SCIE CSCD 2020年第3期489-498,共10页
Background: Natural afforestation of former agricultural lands with alder species is common in Europe. Symbiotic nitrogen fixation by actinomycetes associated with alder species has been widely used for improvement of... Background: Natural afforestation of former agricultural lands with alder species is common in Europe. Symbiotic nitrogen fixation by actinomycetes associated with alder species has been widely used for improvement of soil properties of abandoned agricultural lands, but relatively little is known of the interactions of these processes with soil type and chemical composition. We conducted a space-for time study with soil sampling under and outside grey alder tree canopies on two different soil groups to explore effects of colonisation of former agricultural lands by alder on soil properties.Results: The results were analysed using analysis of variance. During the first 25 years after afforestation of former agricultural lands there was a significant increase in content of Ctot, Ntot, K+, Fe3+, Mn2+and available P in the topsoil(0–10 cm and 11–20 cm) of Dystric Arenosols soils, which are deficient in organic matter. Such trends were not evident in organic matter rich Endostagnic Umbrisols soils, in which exchangeable K+concentration decreased and exchangeable Fe3+and Al3+concentration increased.Conclusions: The results show that the effects of grey alder on soil chemical properties depend on initial soil properties. The invasion of agricultural land by grey alder leads to spatial variability of soil chemical properties creating a mosaic pattern. 展开更多
关键词 AFFORESTATION Grey alder Soil properties Umbrisols ARENOSOLS TOPSOIL
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Color Fastness of Dyed Raw Linen Cloth Modified with Enzymes
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作者 Bernava Aina Borisova Anna +1 位作者 Strazds guntis Reihmane Skaidrite 《Journal of Chemistry and Chemical Engineering》 2014年第7期686-691,共6页
Green thinking looks to develop alternatives with higher environmental advantage that traditional materials or processes. The present experimental studies are directed to investigation of dyeing the linen fabric prepa... Green thinking looks to develop alternatives with higher environmental advantage that traditional materials or processes. The present experimental studies are directed to investigation of dyeing the linen fabric prepared with modification with enzymes. In the research, 1% and 2% solution of cellulase enzyme Beizym ENC-SB (garment auxiliary of enzymes mixture of CHT R. BEITLICH GmbH/BEZEMA AG) and pectinase Beisol PRO (enzymes mixture for cleaning cellulose fibers of CHT R. BE1TLICH GmbH) enzyme solutions were used. The main objective of this work is focus on results studies of enzyme influence on dyeing of flax fabric with direct Solphenyl dye triade Blue FGLE (economical, fairly good light fast blue, main trichromatic component for medium shades with high wash fastness), Scarlet BNLE (economical scarlet, main trichromatic component for medium to dark shades) 200%, and Yellow GLE (very bright neutral yellow, main trichromatic component for high wash fastness requirements). The dye-bath exhaustion, color fastness to rubbing and washing were estimated. The color parameters before and after tests were calculated. 展开更多
关键词 Raw linen cloth PECTINASE cellulase enzymes modification direct dye color fastness.
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技术进步不断释放更多的资源
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作者 guntis Moritis 《国外石油动态》 2008年第14期29-33,共5页
技术进步正在使公司能够从前些年开发不经济的资源中提取更多的气和油。这些资源包括在致密砂层、页岩层和碳酸盐岩层发掘的气;超重油;来自(需要强化采油或提高采收率技术的)成熟油田的增产油量。 石油工程师学会(SPE)年度工艺... 技术进步正在使公司能够从前些年开发不经济的资源中提取更多的气和油。这些资源包括在致密砂层、页岩层和碳酸盐岩层发掘的气;超重油;来自(需要强化采油或提高采收率技术的)成熟油田的增产油量。 石油工程师学会(SPE)年度工艺技术(the SPE Annual Technology)(2007年儿月11—14日)的各种论文提供了对这些公司使用或将要使用便于这些资源开采的技术的深入了解。 展开更多
关键词 技术进步 资源开采 提高采收率技术 石油工程师学会 碳酸盐岩层 致密砂层 成熟油田 强化采油
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2010年世界提高原油采收率(EOR)调查报告——在各种EOR技术中,蒸汽驱和CO2驱应用最广泛,蒸汽驱占总产量的61%,CO2混相驱占17%,烃类驱占17%,其他占5%
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作者 guntis Moritis 《世界石油工业》 2011年第6期52-56,共5页
2010年,世界提高原油采收率(EOR)项目总产量为162.43万bbl/d。其中,美国EOR产量占世界总产量的41%,达66.5万bbl/d,位居第一;其次是委内瑞拉(23%)和加拿大(22%)。在各种EOR,技术中,蒸汽驱和CO2驱的应用最为广泛:从... 2010年,世界提高原油采收率(EOR)项目总产量为162.43万bbl/d。其中,美国EOR产量占世界总产量的41%,达66.5万bbl/d,位居第一;其次是委内瑞拉(23%)和加拿大(22%)。在各种EOR,技术中,蒸汽驱和CO2驱的应用最为广泛:从产量来看,蒸汽驱的产量占总产量的61%,CO2混相驱占总产量的17%,烃类驱占总产量的17%,其他共占5%;从项目数量来看,516个在调查项目总数中,蒸汽驱的顷目数量最多,占总数的39%,其次为CO2混相驱(57%)。 展开更多
关键词 CO2混相驱 EOR技术 原油采收率 总产量 CO2驱 蒸汽驱 调查报告 世界
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Steel-Tinplate as a Solar Wall Panel and Its Effectiveness
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作者 Aivars Aboltins guntis Ruskis Janis Palabinskis 《Journal of Energy and Power Engineering》 2012年第6期912-915,共4页
The aim of the research was to investigate black colored steel-tinplate use for absorber and covering material of the collector and compare the efficiency of three types of air heating collectors. This heated air can ... The aim of the research was to investigate black colored steel-tinplate use for absorber and covering material of the collector and compare the efficiency of three types of air heating collectors. This heated air can be exploited for drying of agricultural products, room ventilation and room heating etc. 0.1 × 0.5 × 1.0 meter long FPC (fiat-plate collector) with a sun following platform was built. Air velocity at the experiments was v = 0.9 m/s. Collectors of insulated and un-insulated surfaces with steel-tinplate absorber as a covering material warmed the ambient air up to 10-12 and 5-6 degrees correspondingly (at irradiance 800 W/m^2). This difference indicates the great importance of insulating the collector body. It can be explained with intense heat exchange between the absorber and ambient air which reduces the efficiency of the collector. There was good correlation with irradiance and the air heating degree. The investigations showed that more effective FPC had the collector with absorber tinplate in the middle of the collector body. At favorable weather conditions the heating degree of the ambient air at the outlet reaches 6-8 degrees more that at the outlet of the insulated collector covered by steel-tinplate. 展开更多
关键词 Solar energy air heating COLLECTOR solar wall ABSORBER steel-tinplate.
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Assessment of geodetic strain and stress variations in Nepal due to 25 April 2015 Gorkha earthquake:Insights from the GNSS data analysis and b-value 被引量:2
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作者 Sravanthi gunti Priyom Roy +6 位作者 J.Narendran Ramesh Pudi S.Muralikrishnan K.Vinod Kumar M.Subrahmanyam Y.Israel B.Satish Kumar 《Geodesy and Geodynamics》 CSCD 2022年第3期288-300,共13页
A magnitude M;7.8 earthquake occurred on 25 April 2015(referred as Gorkha earthquake).We have analyzed the spatial variation of b-value and two-dimensional strain within Nepal Himalaya before and after the Gorkha eart... A magnitude M;7.8 earthquake occurred on 25 April 2015(referred as Gorkha earthquake).We have analyzed the spatial variation of b-value and two-dimensional strain within Nepal Himalaya before and after the Gorkha earthquake.We have used continuous Global Navigation Satellite System(GNSS)data from 30 stations in the Nepal region for geodetic strain estimation and earthquake data for b-value estimation.The GNSS data were processed using double differencing technique for the accurate position of each station.The precise velocity vectors show a general azimuth of north east for all the stations and have been used to derive two-dimensional strain.Between epicenters of Gorkha(25 April 2015)and Dolakha earthquakes(12 May 2015),we observed high co-seismic horizontal displacements(0.2 m to 2 m).In the Pre-seismic deformation study,maximum strain accumulation(56.40×10;)and low bvalue(0.79-0.89)was observed in and around the Western Nepal region,which may be responsible for the 2015 Gorkha earthquake.The potential seismic zones were identified by GIS based integration of geodetic strain and b-value map and superimposition using weighted overlay method.The Maximum strain and low b-value are now observed in the eastern part of Nepal.Hence,the spatial disposition of elastic energy has changed after the two major earthquakes and continuous seismic hazard assessment is required in the eastern Nepal. 展开更多
关键词 HIMALAYA Co-seismic offsets Bernese 5.2 UNAVCO Grid_Strain
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Enhanced Photocatalytic Remediation Using Graphene (G)-Titanium Oxide (TiO2) Nanocomposite Material in Visible Light Radiation
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作者 Srikanth gunti Michael McCrory +1 位作者 Ashok Kumar Manoj K. Ram 《American Journal of Analytical Chemistry》 2016年第7期576-587,共12页
The petroleum compounds were photocatalytically remediated from water using graphene (G)- titanium oxide (TiO<sub>2</sub>) nanocomposite material in visible light radiation. The G-TiO<sub>2</sub&g... The petroleum compounds were photocatalytically remediated from water using graphene (G)- titanium oxide (TiO<sub>2</sub>) nanocomposite material in visible light radiation. The G-TiO<sub>2</sub> nanocomposite was synthesized using sol-gel technique, and its structural & morphological properties were studied using scanning electron microscopy (SEM), X-ray diffraction (XRD), transmission electron microscopy (TEM), particle analyzer and UV-Visible spectroscopy (UV-Vis) measurement techniques. Various petroleum-based chemicals (toluene, naphthalene and diesel) were remediated, and samples were analyzed using optical and gas chromatography (GC) techniques. The mechanism of photocatalytic remediation of petroleum compounds using G-TiO<sub>2</sub> nanomaterials is understood and well compared with data available in literature. 展开更多
关键词 G-TiO2 PHOTOCATALYST DECONTAMINATION TOLUENE NAPHTHALENE Petroleum
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Comparative Organics Remediation Properties of Nanostructured Graphene Doped Titanium Oxide and Graphene Doped Zinc Oxide Photocatalysts 被引量:1
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作者 Srikanth gunti Ashok Kumar Manoj K. Ram 《American Journal of Analytical Chemistry》 2015年第8期708-717,共10页
In recent years, we have accomplished effective organics remediation using titanium oxide (TiO2) doped transition metals, zinc oxide (ZnO) nanowires and silver & palladium doped ZnO nanowires. The present manuscri... In recent years, we have accomplished effective organics remediation using titanium oxide (TiO2) doped transition metals, zinc oxide (ZnO) nanowires and silver & palladium doped ZnO nanowires. The present manuscript displays the advantage of organic remediation in both UV and visible radiation using graphene (G) doped TiO2 nanoparticles, G doped ZnO nanowires. The nanostructured G-TiO2 nanoparticles and G-ZnO nanowires were synthesized using sol-gel and hydrothermal methods. The nanostructured materials were characterized using scanning electron microscopy (SEM) and X-Ray diffraction (XRD), procedures. The remediation of organic compounds (naphthalene, methyl orange) in water was achieved under both UV and visible radiation using graphene doped nanostructured photocatalytic materials. The advantage of graphene doped ZnO nanowires as well as G-TiO2 nanoparticles has revealed organics remediation in both UV and visible radiation of light. 展开更多
关键词 Nanostructures Organic Compounds Sol-Gel Growth Visible and Ultraviolet SPECTROMETERS Oxides
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Effect of Silicon and Nitrogen Nutrition on Pest and Disease Intensity in Rice 被引量:1
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作者 Kasthuri Rajamani Bhupal Raj gunti +1 位作者 Shashi Vemuri Ramesh Bellamkonda 《Journal of Agricultural Science and Technology(A)》 2013年第7期568-574,共7页
Nutrition management is the most important for high yield production but it may affect the response of rice plants to pest and diseases due to the change of microclimate under rice plant canopy. The knowledge of nutri... Nutrition management is the most important for high yield production but it may affect the response of rice plants to pest and diseases due to the change of microclimate under rice plant canopy. The knowledge of nutrition management and its relation with pest and diseases are basis for setting up a high yield production system. Most of the pest and disease control procedures used by farmers can be considered as soil fertility management and these nutrition practices can have impact on the physiological susceptibility of crop plants to pest and diseases by affecting the plant resistance. Silicon content of plants is particularly effective against pest and diseases in rice and certain rice genotypes are more efficient accumulators of silicon, thus making them more resistant. In the absence of natural heritable resistance in rice varieties, resistance could be induced by altemate strategies to suppress certain pest and pathogens. Hence experiments were carried out in two stages during kharif 2010 and 2011 to assess the concentration of silicon in the index leaves of rice plant utilizing 133 varieties in four locations. The silica content of promising varieties ranged from 1.50% to 3.20%, 1.60% to 3.15%, 1.49% to 3.20% and 1.55% to 3.06% with a mean values of 2.50%, 2.48%, 2.51% and 2.43% at Jagtial, Warangal, Rajendranagar and Rudrur centres of Telangana region and not much variation in mean silica content in index leaves at different places. The overall yield from four locations ranged from 2,653 kg/ha to 6,860 kg/ha with a mean of 5,624 kg/ha. The yields recorded at Jagtial, Warangal, Rajendranagar and Rudrur centres ranged from 2,886 to 7,198, 2,653 to 6,831, 2,653 to 6,860 and 4,399 to 5,950 kg/ha, respectively. The lowest mean yield 5,069 kg/ha was noticed at Rudrur and the highest yield 5,940 kg/ha was found at Warangal. The variations in yields might be due to genotypic variations and also due to variations in climatic conditions of different locations. 展开更多
关键词 Nutrition management conventional rice silicon rice genotypes pest and diseases.
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