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Organic matter accumulation in lacustrine shale of the Permian Jimsar Sag,Junggar Basin,NW China

Petroleum Science 2023年第3期20卷 1327-1346页

作者： Xiu-Jian Ding Wen-Jun He Hai-Lei Liu Xu-guang guo Ming zha Zhong-fa.Jiang School of geosciences in China University of Petroleum QingdaoShandong266580China Research Institute of Petroleum Exploration and Development PetroChina Xinjiang Oilfield CompanyKaramayXinjiang841000China

The lacustrine organic-rich shale in the Permian Lucaogou(LCg)Formation of the Jimsar Sag,Junggar Basin,is one of the main shale oil plays in *** this paper,geological and geochemical research techniques were employed to evaluate the geochemical variability of the lacustrine shale and the pro-duction of organic matter and its preservation *** Lcg Formation is characterized by its complex mineral compositions and a wide range of organic matter richness and *** presence of high proportions ofβ-carotane and C2g steranes,indicates that the organic matter mainly originated from phytoplankton and aquatic algal-bacterial organisms,especially *** study found that the productivity of the Lower LCg Member(P2li)was highest,and the Middle LCg Member(P_(2)l_(2))was the *** the deposition of the Lower LCg Member,the lake's bottom water was predominantly a reducing environment,and the degradation of organic matter was largely a result of bacterial sulfa.e *** the deposition of the Middle and Upper LCg members,the lake's bottom water was mainly oxidizing,and the degradation of organic matter was likely to be caused by aerobic *** on a comprehensive analysis of the origin and production of organic matter,as well as its depo-sitional environment and preservation conditions,two organic matter accumulation models were pro-posed to explain the distribution of the organic-rich *** model A,the high influx of volcanic ash released nutrients and brought abundant sulfa.e into the water,the accumulation of organic matter was mainly controlled by the preservation of organic matter,which was mainly controlled by *** the model B,the influx of volcanic ash was small,organic matter was mainly degraded by oxygen and the accumulation of organic matter is mainly determined by the production of organic matter.

关键词： Lucaogou formation Jimsar sag Organic-matter-rich shale Organic matter accumulation Organic matter productivity Bacterial sulfa.e reduction

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The coupling control of biological precursors and environmental fa.tors onβ-carotane enrichment in alkaline lacustrine source rocks:A case study from the Fengcheng formation in the western Junggar Basin,NW China

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Petroleum Science 2024年第2期21卷 836-854页

作者： Mao-guo Hou Ming zha Hua Liu Hai-Lei Liu Jiang-Xiu Qu Ablimit Imin Xiu-Jian Ding Zhong-fa.Jiang School of geosciences China University of PetroleumQingdaoShandong266580China Research Institute of Exploration and Development Xinjiang Petroleum Administration BureauKaramayXinjiang834000China

The organic-rich mudstones and dolostones of the Permian Fengcheng Formation(Fm.)are typically alkaline lacustrine source rocks,which are typified by impressively abundantβ-*** β-carotane has been well acknowledged as an effective indicator of biological sources or depositional ***,the specific biological sources of β-carotane and the coupling control of biological sources and environmental fa.tors on the enrichment of β-carotane in the Fengcheng *** *** on a comprehensive investigation of the bulk,molecular geochemistry,and organic petrology of sedimentary rocks and the biochemistry of phytoplankton in modern alkaline lakes,we proposed a new understanding of the biological precursors of β-carotane and elucidated the enrichment mechanism of β-carotane in the Fengcheng *** results show that the biological precursors crucially control the enrichment of β-carotane in the Fengcheng *** haloalkaliphilic cyanobacteria are the primary biological sources of β-carotane,which is suggested by a good positive correlation between the 2-methylhopane index,7-+8-methyl heptadecanes/C_(max),C_(29%),and β-carotane/C_(max)in sedimentary rocks and the predominance of cyanobacteria with abundantβ-carotene in modern alkaline *** enrichment of β-carotane requires the reducing condition,and the paleoredox state that affects the enrichment of β-carotane appears to have a *** paleoclimate conditions do not considerably impact the enrichment of β-carotane,but they have some influence on the water's paleosalinity by affecting evaporation and *** it does not directly affect the enrichment of β-carotane in the Fengcheng Fm.,paleosalinity does have an impact on the cyanobacterial precursor supply and the preservation conditions.

关键词： β-carotane enrichment Cyanobacterial input Environmental impact Alkaline lacustrine source rocks The Fengcheng formation

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Source and accumulation process of Jurassic biodegraded oil in the Eastern Junggar Basin,NW China

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Petroleum Science 2021年第4期18卷 1033-1046页

作者： Mao-guo Hou Ming zha Xiu-Jian Ding He Yin Bao-Li Bian Hai-Lei Liu Zhong-fa.Jiang School of geosciences China University of PetroleumQingdaoShandong 266580China Research Institute of Exploration and Development Xinjiang Petroleum Administration BureauKaramay 834000China

Biodegradation usually obscures or even radically alters the original characteristics of oil *** mixing of oil from multiple sources makes each source difficult to *** the source of biodegraded oil from multiple sources has always been a hard nut to *** to this challenge,in this study-we carried out a comprehensive investigation of biodegradation impacts,oil-source correlation,and oil charging history to trace the source and reveal the mixing process of biodegraded oil in the Toutunhe Formation(J_(2)t)in the eastern Junggar Basin,NW *** oil of this area was biodegraded to different extent,consequently,many commonly used biomarker parameters(***/Ph,Pr/n C_(17))became less powerful for oil-source *** address this problem,the resistance of many biomarkers to biodegradation was analyzed,and those of high bio resistance were selected to generate a more reliable oil-source *** results revealed that biodegraded oil was a mixture of oil sourced from Lucaogou Formation(P_(2)l)and Xiaoquangou Formation(T_(2-3)xq).Core sample observation,microscopic fluorescent analysis and fluid inclusion analysis were combined to analyze comprehensively oil charging *** analysis of accumulation process exhibited that the existing oil in J_(2)t was a mixture originated from the P_(2)l and T_(2-3)xq source rocks in two separate charging stages when it underwent a complicated process of charging,biodegradation,recharging and mixing.

关键词： Biodegraded oil Mixed oil Oil-source correlation Oil accumulation process Junggar Basin

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Performance of the merged APPLE-Knot undulator for soft x-ray beamline in medium energy ring

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Chinese Physics B 2023年第11期32卷 240-246页

作者：成锐张发远查鹤鸣乔山 National Key Laboratory of Materials for Integrated Circuits Shanghai Institute of Microsystem and Information TechnologyChinese Academy of SciencesShanghai 200050China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing 100049China School of Physical Science and Technology ShanghaiTech UniversityShanghai 201210China

APPLE-Knot undulator can effectively solve the on-axis heat load problem and is proven to perform well in VUV beamline and soft x-ray beamline in high energy storage ring. However, for soft x-ray beamline in a medium energy ring,whether the APPLE-Knot undulator excels the APPLE undulator is still a question. Here, a merged APPLE-Knot undulator is studied to generate soft x-ray in a medium energy ring. Its advantages and problems are discussed. Though the on-axis heat load of the APPLE-Knot undulator is lower in linear polarization modes compared to the APPLE undulator, its flux is lower. The APPLE-Knot undulator shows no advantage when only fundamental harmonic is needed. However, in circular polarization mode, the APPLE-Knot undulator shows the ability to cover a broader energy range which can remedy the notable shortcoming of the APPLE undulator.

关键词： synchrotron radiation APPLE-Knot undulator soft x-ray

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一类非线性系统的自适应控制及其在发动机中的应用

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推进技术 2007年第1期28卷 92-96页

作者：查旭郭法涛北京机电工程研究所北京100074

讨论了一类不确定性严格反馈非线性系统的鲁棒控制问题。结合H∞控制和自适应控制,提出基于一种反演(Backstepping)技术的鲁棒控制器。将广义不确定项参数化,提出了状态反馈控制器的算法,反演迭代设计不仅避免了求解HJI不等式设计控制... 详细信息

讨论了一类不确定性严格反馈非线性系统的鲁棒控制问题。结合H∞控制和自适应控制,提出基于一种反演(Backstepping)技术的鲁棒控制器。将广义不确定项参数化,提出了状态反馈控制器的算法,反演迭代设计不仅避免了求解HJI不等式设计控制器的困难,而且保证了闭环系统取得H∞的性能指标。基于航空发动机模型的仿真结果证明了理论推导的有效性。

关键词：航空发动机非线性反演^+ 自适应控制

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重视维持性血液透析患者蛋白质能量消耗的评估

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中华医学杂志 2018年第42期98卷 3388-3391页

作者：查艳孙发贵州省人民医院肾内科贵阳550002

蛋白质能量消耗（ protein-energy wasting, PEW）已被证实是维持性血液透析（MHD）患者不良预后的强预测因素。18％～48％的慢性肾脏病（CKD）患者存在PEW，而MHD患者这一比例可高达75％，且与透析相关并发症及高死亡率密切相关。因此... 详细信息

蛋白质能量消耗（ protein-energy wasting, PEW）已被证实是维持性血液透析（MHD）患者不良预后的强预测因素。18％～48％的慢性肾脏病（CKD）患者存在PEW，而MHD患者这一比例可高达75％，且与透析相关并发症及高死亡率密切相关。因此，重视蛋白质能量消耗的评估对透析患者的治疗目标和临床预后十分重要。

关键词：维持性血液透析患者能量消耗蛋白质评估透析相关并发症慢性肾脏病预测因素不良预后

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In-Situ SRPES Study on the Band Alignment of (0001)CdS/CdTe Heterojunction

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Chinese Physics Letters 2012年第5期29卷 201-204页

作者： gAO Jun-Ning JIE Wan-Qi YUAN Yan-Yan zha.gang-Qiang XU Ling-Yan WU Heng WANg Ya-Bin YU Hui ZHU Jun-fa State Key Laboratory of Solidification Processing School of Materials Science and EngineeringNorthwestern Polytechnical UniversityXi’an 710072 National Synchrotron Radiation Laboratory University of Science and Technology of ChinaHefei 230029

The band alignment of a (0001)CdS/CdTe heterojunction is in situ studied by synchrotron radiation photoemission spectroscopy (SRPES).The heterojunction is formed through stepwise deposition of a CdTe film on a wurtzite (0001)CdS single crystalline substrate via molecular beam *** shows an upward band bending of 0.55 eV,the valence band offset △Ev is calculated to be 0.65 e V and the conduction band offset △ Ec is 0.31 *** interracial band alignment is sketched to display type-Ⅰ band alignment.

关键词： alignment sketch bending

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1951～2016年ENSO对登陆广东省热带气旋的影响

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应用海洋学学报 2018年第1期37卷 26-34页

作者：陈世发查轩福建师范大学地理科学学院福建福州350007 韶关学院旅游与地理学院广东韶关512005 福建地理研究所福建福州350007

为分析ENSO对登陆广东省热带气旋影响,选用1951~2016年登陆广东省热带气旋统计数据,分析与ENSO特征值之间的关系.研究结果表明:登陆广东省热带气旋年内变化和年际变化较大,年际变化总体呈现波动下降的趋势;登陆广东省的热带气旋主要集... 详细信息

为分析ENSO对登陆广东省热带气旋影响,选用1951~2016年登陆广东省热带气旋统计数据,分析与ENSO特征值之间的关系.研究结果表明:登陆广东省热带气旋年内变化和年际变化较大,年际变化总体呈现波动下降的趋势;登陆广东省的热带气旋主要集中于粤西沿海,特别是湛江东部沿海区域;厄尔尼诺年登陆广东省热带气旋数(2.74次)低于拉尼娜年热带气旋数(4.50次),但登陆的热带气旋强度相对较高;登陆广东省的热带气旋与Nio3.4海洋表面温度距平值(SSTA)、海洋尼诺指数(ONI)和南方涛动指数(SOI)等ENSO特征值呈现显著相关关系.

关键词：海洋气象学厄尔尼诺南方涛动热带气旋拉尼娜海洋尼诺指数多变量ENSO指数

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基于“和谐使命-2017”任务医院船海外医疗服务中超声工作的思考

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第二军医大学学报 2018年第11期39卷 1270-1272页

作者：宋家琳蒋栋法凯查长松海军军医大学(第二军医大学)长征医院超声科上海200003 海军军医大学(第二军医大学)长海医院超声科上海200433 解放军总医院第六医学中心超声医学科北京100048 解放军404医院特检科威海264200

"和平方舟"是专门为海上医疗救护"量身定做"的专业大型医院船,素有"漂浮在海上的三甲医院"之称,在我国海军远海卫勤保障及军事外交任务中担负重要角色。超声诊断作为医院船上不可或缺的一部分,为医疗服务提供坚实有力的保障。笔者通过执... 详细信息

"和平方舟"是专门为海上医疗救护"量身定做"的专业大型医院船,素有"漂浮在海上的三甲医院"之称,在我国海军远海卫勤保障及军事外交任务中担负重要角色。超声诊断作为医院船上不可或缺的一部分,为医疗服务提供坚实有力的保障。笔者通过执行"和谐使命-2017"医疗任务,就医院船超声科室的设备配置、人员抽组、报告系统改良、质量控制管理及引进新技术等方面总结经验,提出建议,为进一步提高医院船综合诊断与医疗救治能力以及今后遂行多样化军事任务提供参考。

关键词：医院船超声检查海军医学和谐使命-2017

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基于六端网络法的压电超声换能器优化设计

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工程科学学报 2022年第5期44卷 933-939页

作者：刘世杰冯平法查慧婷冯峰清华大学深圳国际研究生院先进制造学部深圳518055 清华大学机械工程系北京100084

压电超声换能器传统四端网络设计方法忽略了压电陶瓷晶堆内部的机电耦合过程,使用该方法所设计的压电超声换能器尺寸误差大,输出的超声振幅较小.为了提高压电超声换能器尺寸设计精度、增大换能器输出的超声振幅,本文将考虑压电陶瓷晶堆... 详细信息

压电超声换能器传统四端网络设计方法忽略了压电陶瓷晶堆内部的机电耦合过程,使用该方法所设计的压电超声换能器尺寸误差大,输出的超声振幅较小.为了提高压电超声换能器尺寸设计精度、增大换能器输出的超声振幅,本文将考虑压电陶瓷晶堆内部机电耦合作用的六端网络引入到压电超声换能器的设计中,分别采用四端网络法和六端网络法设计得到两个不同尺寸的压电超声换能器A和B,通过有限元方法对比分析了两个换能器的固有频率和输出振幅,并进一步通过实验验证了设计理论与仿真分析的有效性.研究结果表明,在相同激励电压下,采用六端网络法设计得到的压电超声换能器B输出的超声振幅是换能器A输出振幅的1.5倍,六端网络法设计压电超声换能器可以提高所设计换能器的振动性能.

关键词：压电超声换能器六端网络法四端网络法有限元分析超声振幅

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