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太湖水利同知署考略  [PDF]
刘延华,徐森
东南文化 , 2013,
Abstract: ????太湖水利同知署(俗称同知衙门),初设于江苏省苏州市同里镇,清雍正八年由礼科给事中陈沂震入官房改建而成,现仍留存。雍正十三年,衙署移驻东山,用东山文铎、褚菊书两家的房产办公,之后又有毁、建,现已无存。梳理同知衙署的设立背景、历史沿革、功能嬗变,为研究太湖水利史和专业衙署遗产提供了实证。
vsp激发方式选择分析  [PDF]
范晓南,曹立斌,钟萍,文向东
天然气工业 , 2009,
Abstract: ?为满足实际生产对vsp资料的更高要求,除了加快采集设备和处理软件的更新外,激发方式也是一个不容忽视的重要问题。在川渝地区,长期以来都采用“水炮”作为震源来采集vsp资料,并且认为“水炮”激发方便、资料一致性较好,是vsp资料采集的理想震源,但是在川中、川中—川南过渡带上用水炮采集的vsp资料往往出现主频低、频带窄、波组不齐全的问题,在很大程度上影响了vsp技术的应用效果和推广。以bq205井vsp测井为例,对“井炮”和“水炮”激发采集的vsp资料从子波一致性、能量的稳定性、分辨率的高低等方面进行了对比分析,认为在低降速带较厚的地区,“井炮”激发采集的vsp资料比“水炮”激发的子波一致性要好、能量的稳定性更优、抗低频的能力更强、分辨率更高。这一结论对四川盆地vsp资料采集及其推广应用具有指导意义。
vsp多波旅行时反演  [PDF]
谢春辉,孙赞东,王学军,杨午阳
石油地球物理勘探 , 2011,
Abstract: ?本文基于几何地震学原理,分别利用vsp直达波、反射纵波及上行转换横波旅行时反演层速度。直达波旅行时反演只能获得检波点所在井段地层的速度;上行纵波旅行时反演能获得最深检波器以下地层的速度,即井底以下地层的速度;上行转换横波旅行时反演则能获得横波速度。本文主要研究利用vsp直达波和上行反射波求取井段及井底以下地层的速度,最终根据三维vsp资料获取三维速度体。
倾斜地层的vsp时深标定研究  [PDF]
姜本厚,沈章洪,张平平,蔡越钎
石油地球物理勘探 , 2012,
Abstract: ?针对vsp时深关系与偏移剖面对比时经常需要进行调整的情况,本文以理论时深关系为标准,通过vsp时深关系、偏移剖面与理论时深关系的对比研究,分析了vsp、偏移剖面与理论时深关系的差别所在。以渤海油田cyq构造已钻井实测vsp数据和vsp正演结果为实例对比分析了倾斜地层vsp和偏移剖面对时深标定的影响。
Review on the forward modeling and inversion of vertical seismic profile
VSP正反演综述

ZOU Yan-yan,XU Yi-xian,SHA Chun,
邹延延

地球物理学进展 , 2009,
Abstract: Vertical seismic profiling (VSP) is a rapidly developing technology. Because VSP offers the possibility to analyze reflected and transmitted seismic waves generated by a source located at the surface and recorded by geophones positioned in a borehole. Compared with surface seismic technology, VSP has a higher S/N ratio and resolution, and its waves' motive and dynamic characteristics are more conspicuous, so it plays an important role in exploration seismology. This paper introduces the simulation and inversion of VSP and gives the prospect of VSP.
Developmental changes in abundance of the VSPβ protein following nuclear transformation of maize with the Soybean vspβ cDNA
Magali F Grando, Rex L Smith, Cristina Moreira, Brian T Scully, Robert G Shatters
BMC Plant Biology , 2005, DOI: 10.1186/1471-2229-5-3
Abstract: From 81 bombardments, 101 plants were regenerated, and plants from five independent lines produced vspB transcripts and VSPβ polypeptides. In leaves from seven-week-old plants (prior to flowering), VSPβ accumulated to 0.5% of the soluble leaf protein in primary transgenic plants (R0), but to only 0.03% in R1 plants. During seed-filling (silage-stage) in R1 plants, the VSPβ protein was no longer detected in leaves and stems despite continued presence of the vspB RNA. The RNA transcripts for this peptide either became less efficiently translated, or the VSPβ protein became unstable during seed-fill.Developmental differences in the accumulation of soybean VSPβ when transgenically expressed in maize show that despite no changes in the vspB transcript level, VSPβ protein that is readily detected in leaves of preflowering plants, becomes undetectable as seeds begin to develop.Although genetic variation for protein content has been found in forage plants, this variability is narrower than that observed for other traits such as digestibility [1]. Since the major protein components in monocot forage and silage crops are involved in metabolic activity, and hence are not "true" storage proteins, it has been argued that it is not feasible to make major changes in protein quality or protein composition by conventional breeding [1]. However, genetic engineering may allow improvement in protein quality and content through expression of a storage protein not found in grass vegetative tissue.Genes encoding seed storage proteins of various plant species have been transgenically expressed to test for improvement of nutritional quality. Most experiments were conducted with tobacco and legume species including alfalfa, soybean, canola, clover and lupins. For nuclear-targeted genes, accumulation of these seed storage proteins in vegetative tissue of transgenic plants was either undetectable or very low. These included pea vicilin [2,3], soybean conglycinin [4], sunflower seed agglutinin
The Giardia lamblia vsp gene repertoire: characteristics, genomic organization, and evolution
Rodney D Adam, Anuranjini Nigam, Vishwas Seshadri, Craig A Martens, Gregory A Farneth, Hilary G Morrison, Theodore E Nash, Stephen F Porcella, Rima Patel
BMC Genomics , 2010, DOI: 10.1186/1471-2164-11-424
Abstract: The WB Giardia isolate has been sequenced at 10× coverage and assembled into 306 contigs as large as 870 kb in size. We have used this assembly to evaluate the genomic organization and evolution of the vsp repertoire. We have identified 228 complete and 75 partial vsp gene sequences for an estimated repertoire of 270 to 303, making up about 4% of the genome. The vsp gene diversity includes 30 genes containing tandem repeats, and 14 vsp pairs of identical genes present in either head to head or tail to tail configurations (designated as inverted pairs), where the two genes are separated by 2 to 4 kb of non-coding DNA. Interestingly, over half the total vsp repertoire is present in the form of linear gene arrays that can contain up to 10 vsp gene members. Lastly, evidence for recombination within and across minor clades of vsp genes is provided.The data we present here is the first comprehensive analysis of the vsp gene family from the Genotype A1 WB isolate with an emphasis on vsp characterization, function, evolution and contributions to pathogenesis of this important pathogen.Giardia lamblia (syn. G. duodenalis, G. intestinalis) is an anaerobic protist that is medically important as a common cause of intestinal infection and diarrhea [1]. Humans and other susceptible mammals become infected when cysts are ingested from contaminated water or food and excyst into trophozoites in the proximal small intestine. These trophozoites replicate and cause the symptoms of diarrhea. Infections with Giardia are frequently prolonged and malabsorption with weight loss may last for months in the absence of treatment, despite an immune response that would be expected to eradicate the infection. One of the possible reasons for the persistence of infection is antigenic variation of the variant-specific surface proteins (VSPs).A single trophozoite expresses only a single member of this protein family at any one time [2], but may switch expression from one VSP to another in vitro at a r
复杂高陡构造零井源距vsp资料常速度梯度射线追踪法vsp-cdp成像  [PDF]
梁向豪,罗斌,张新东
石油地球物理勘探 , 2014,
Abstract: ?以塔里木库车地区零井源距vsp地震资料为例,指出复杂高陡构造零井源距vsp已不属于一维地震范畴,即使上行反射得到准确的倾角时差校正,也无法充分体现复杂高陡构造零井源距vsp资料的全貌。首次采用复杂介质常速度梯度射线追踪技术对高陡构造零井源距vsp上行p波和上行sv波同时进行二维地震成像,展示了复杂高陡构造零井源距vsp模型数据及实际数据的处理效果,对类似地区零井源距vsp地震资料处理具有一定的实际参考价值。
vsp逆时偏移及其存储策略研究  [PDF]
王维红,郭雪豹,石颖,刘诗竹
石油地球物理勘探 , 2015,
Abstract: ?在逆时偏移算法中,应用常规的随机边界方法虽可节约存储空间,但浅层常伴有随机噪声。应用pml边界方法虽可改善上述状况,却又面临地震波场存储的压力。为此,本文采用优化系数的高阶有限差分方法实现vsp数据逆时深度偏移,采用拉普拉斯去噪方法压制低频噪声,并兼顾考虑精度和存储,在pml边界震源波场正传过程中保存部分波场,进而利用保存的信息与检波点波场同步反传,不仅可有效地节约存储空间,也确保了替代波场信息的可靠性。断层模型测试表明,本文方法能够以低存储实现高精度的vsp逆时偏移,相比于地面地震偏移,断层成像更清晰、准确。
vsp优化预测反褶积与vsp子波替换法反褶积  [PDF]
孙哲,刘洋,王静,田洪,苏华,赵前华
石油地球物理勘探 , 2009,
Abstract: ?相对于地面地震资料而言,vsp资料具有高分辨率和高信噪比等特点。利用从vsp资料中提取的反褶积算子,对叠后地面地震资料进行处理,可以提高其分辨率。本文提出两种改善地面地震资料分辨率的途径:其-是在常规预测反褶积原理基础上通过设计-个理想的预测步长,使得反褶积后的剖面在信噪比不降低的情况下,获得尽可能高的分辨率;其二是利用vsp高分辨率子波改善地面地震资料的子波。实际资料处理结果表明,两种方法均可以明显提高地面地震剖面的分辨率。
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