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The new multistage water adsorption model of Longmaxi Formation shale considering the spatial configuration relationship between organic matter and clay minerals

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Petroleum Science 2022年第5期19卷 1950-1963页

作者： zhi-ye gao Shu-Ling Xiong Lin Wei State Key Laboratory of Petroleum Resources and Prospecting China University of PetroleumBeijing102249China Unconventional Petroleum Research Institute China University of PetroleumBeijing102249China School of Energy Resources China University of GeosciencesBeijing100083China

The water adsorption by shale significantly affects shale gas content and its seepage ***,the mechanism of water adsorption by shale is still unclear due to its strong heterogeneity and complicated pore *** relationship between the adsorbed water content at different relative humidities(RHs)and shale compositions,as well as shale pore structure and the spatial configuration relationship between organic matter(OM)and clay minerals,was investigated to clarify the controlling factors and mechanisms of water adsorption by Longmaxi Formation shale from the Southern Sichuan Basin in ***,the water adsorption process could be generally divided into three different stages from 0%RH to 99%***,the Johnston’s clay mine ral interlayer pore structure model(JCM),the Freundlich model(FM)and the Dubinin-Astakhov model(DAM)were tested to fit the three water adsorption stages from low RH to high RH,*** fitting results of the JCM and FM at lower RHs were far from good,while the fitting results of DAM at higher RHs were ***,two revised models(LRHM and MRHM)considering the spatial configuration relationship between OM and clay minerals were proposed for the two stages with lower RHs,and performed better fitting results indicating the pronounced effect of the spatial configuration relationship between OM and clay minerals on the water adsorption process of Longmaxi Formation *** outcomes of this study will contribute to clarifying the water distribution characteristics in the pore network of shale samples with variable water contents.

关键词： Longmaxi formation shale Water content OM-clay complexes Spatial occurrence relationship

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Effects of deep alkaline and acidic fluids on reservoir developed in fault belt of saline lacustrine basin

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Petroleum Science 2023年第2期20卷 776-786页

作者： Lei-Lei Yang Xin-Wei Li Guo Wei Yi-Dan Liu Qin-Gong Zhuo zhi-Chao Yu zhi-ye gao State Key Laboratory of Petroleum Resource and Prospecting China University of Petroleum(Beijing)Beijing102249China The Unconventional Petroleum Research Institute China University of Petroleum(Beijing)Beijing102249China Jilin Oilfield Company Jilin130062China PetroChina Exploration and Development Research Institute Beijing100083China

Through the long development processes of reservoir sedimentation and diagenesis, acidic and alkaline fluids play key roles in controlling deep reservoir development. However, the ways in which deep fluids control and transform the reservoir under complex fault conditions remain unclear. In this study, a 2D model was established based on a typical sub-salt to intra-salt vertical profile in the Qaidam Basin, China. Based on measured data, multiphase flow reaction and solute transport simulation technology were used to analyze fluids flow and migration in the intra-salt and sub-salt reservoirs, determine the mineral dissolution, precipitation, and transformation in the reservoir caused by the deep fluids, and calculate the changes in reservoir porosity. Results show that deep fluid migrates preferentially along dominant channels and triggers a series of fluid–rock chemical reactions. In the first stage, a large amount of anhydrite precipitated in the fault as a result of upward migration of deep saline fluid, resulting in the formation of anhydrite veins and blockage at the base of the fault. In the second stage, organic acids caused minerals dissolution and a vertical channel was opened in previously blocked area, which promoted continuous upward migration of organic acids and the formation of secondary pores. This study clarifies the transformative effects of deep alkaline and acidic fluids on the reservoir. Moreover, the important fluid transport role of faults and their effect on reservoir development were determined.

关键词： Saline lacustrine basin Alkaline and acidic fluids Fault-belt reservoir Mineral transformation Physical conditions

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Pore structure and tracer migration behavior of typical American and Chinese shales

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Petroleum Science 2015年第4期12卷 651-663页

作者： Qin-Hong Hu Xian-Guo Liu zhi-ye gao Shu-Gen Liu Wen Zhou Wen-Xuan Hu China University of Geosciences (Wuhan) The University of Texas at Arlington State Key Laboratory of Petroleum Resources and Prospecting China University of Petroleum State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation Chengdu University of Technology Nanjing University

With estimated shale gas resources greater than those of US and Canada combined, China has been embarking on an ambitious shale development program. However, nearly 30 years of American experience in shale hydrocarbon exploration and production indicates a low total recovery of shale gas at 12 %-30 % and tight oil at 5 %-10 %. One of the main barriers to sustainable devel- opment of shale resources, namely the pore structure （ge- ometry and connectivity） of the nanopores for storing and transporting hydrocarbons, is rarely investigated. In this study, we collected samples from a variety of leading hydrocarbon-producing shale formations in US and China. These formations have different ages and geologic char- acteristics （e.g., porosity, permeability, mineralogy, total organic content, and thermal maturation）. We studied their pore structure characteristics, imbibition and saturated diffusion, edge-accessible porosity, and wettability with four complementary tests： mercury intrusion porosimetry, fluid and tracer imbibition into initially dry shale, tracer diffusion into fluid-saturated shale, and high-pressure Wood＇s metal intrusion followed with imaging and ele- mental mapping. The imbibition and diffusion tests use tracer-bearing wettability fluids （API brine or n-decane） to examine the association of tracers with mineral or organic matter phases, using a sensitive and micro-scale elemental laser ablation ICP-MS mapping technique. For two molecular tracers in n-decane fluid with the estimated sizes of 1.39 nm x 0.29 nm x 0.18 nm for 1-iododecane and 1.27 nm ~ 0.92 nm ~ 0.78 nm for trichlorooxobis （triph- enylphosphine） rhenium, much less penetration was observed for larger molecules of organic rhenium in shales with median pore-throat sizes of several nanometers. This indicates the probable entanglement of sub-nano-sized molecules in shales with nano-sized pore-throats. Overall findings from the above innovative approaches indicate the limited accessibility （several

关键词： Shale - Nanopore - Connectivity - Diffusion Imbibition

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Real-world evidence on the efficacy and safety of vonoprazanamoxicillin dual therapy for Helicobacter pylori treatment in elderly patients

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World Journal of Gastroenterology 2025年第1期31卷 68-78页

作者： Wen gao Jing-Wen Li Hui ye Xue-zhi Zhang Jian-Xiang Liu Hong Cheng Department of Gastroenterology Peking University First HospitalBeijing 100034China School of Medicine Tsinghua MedicineTsinghua UniversityBeijing 100034China Department of Traditional Chinese Medicine and Integrative Medicine Peking University First HospitalBeijing 100034China

BACKGROUND A dual therapy regimen containing amoxicillin is a common treatment option for the eradication of Helicobacter pylori(***).While substantial research supports the efficacy and safety of vonoprazan and amoxicillin(VA)dual therapy in the general population,there is still a lack of studies specifically focusing on its safety in elderly *** To evaluate efficacy and safety of VA dual therapy as first-line or rescue treatment for *** in elderly *** As a real-world retrospective study,data were collected from elderly patients aged 60 years and above who accepted VA dual therapy(vonoprazan 20 mg twice daily+amoxicillin 1000 mg thrice daily for 14 days)for *** eradication in the Department of Gastroenterology at Peking University First Hospital between June 2020 and January *** status was evaluated by^(13)C-urease breath test 6 weeks after *** adverse events(AEs)during treatment were *** In total,401 cases were ***-one cases were excluded due to loss to follow-up,lack of re-examination,or unwillingness to take *** total of 380 included cases comprised 250 who received VA dual therapy as first-line treatment and 130 who received VA dual therapy as rescue *** was successfully eradicated in 239 cases(95.6%)in the first-line treatment group and 116 cases(89.2%)in the rescue treatment *** overall incidence of AEs was 9.5%for both ***,9.2%of patients experienced an AE in the first-line treatment group and 10.0%in the rescue treatment *** patients discontinued treatment due to AE,with a discontinuation rate of 1.3%.No serious AE *** The VA dual therapy regimen as a first-line treatment and a rescue therapy was effective and safe for elderly patients aged 60 and older.

关键词： Helicobacter pylori Vonoprazan Amoxicillin Dual therapy Elderly

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Co掺杂ZnO薄膜的结构和磁学性能(英文)

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发光学报 2008年第3期29卷 479-485页

作者：彭英姿叶志高叶志镇汪友梅朱丽萍杭州电子科技大学理学院材料物理研究所浙江杭州310018 浙江大学硅材料国家重点实验室浙江杭州310027

研究了用单束脉冲激光沉积法制备的Co掺杂ZnO薄膜的结构和磁学性能。XRD表征结果表明制备的薄膜是具有沿c轴择优取向的纤锌矿点阵结构。然而,进一步的高分辨电子显微镜结果显示整个样品上的晶体取向并不完全相同。很难说明形成了单晶。... 详细信息

研究了用单束脉冲激光沉积法制备的Co掺杂ZnO薄膜的结构和磁学性能。XRD表征结果表明制备的薄膜是具有沿c轴择优取向的纤锌矿点阵结构。然而,进一步的高分辨电子显微镜结果显示整个样品上的晶体取向并不完全相同。很难说明形成了单晶。结果分析表明Co占据了部分Zn的格点,并对电子结构产生了影响。室温下观察到了磁滞回线,显示掺杂Co可以实现ZnO的磁性翻转,但磁性比较小。该薄膜与我们以前用双束脉冲激光沉积法制备的Co掺杂ZnO薄膜具有相似的性能,提示我们其内部的机制可能相似。

关键词： Co掺杂ZnO 稀磁半导体脉冲激光沉积法磁性

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脑心清片治疗冠心病心绞痛的临床疗效观察

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齐齐哈尔医学院学报 2016年第1期37卷 69-70页

作者：叶志高广州市增城区石滩镇中心卫生院 511330

目的探索脑心清片在冠心病心绞痛患者中的临床应用。方法将我院于2011年2月至2014年5月所接收冠心病心绞痛疾病患者作为本组调查对象,分成不同疗法治疗组,即:对照组患者行果糖二磷酸钠、依那普利疗法,研究组于上述药物基础上行脑心清片... 详细信息

目的探索脑心清片在冠心病心绞痛患者中的临床应用。方法将我院于2011年2月至2014年5月所接收冠心病心绞痛疾病患者作为本组调查对象,分成不同疗法治疗组,即:对照组患者行果糖二磷酸钠、依那普利疗法,研究组于上述药物基础上行脑心清片疗法,于临床疾病治疗结束后评判治疗效果。结果研究组冠心病心绞痛疾病患者临床治疗效果92.0%、毒副作用总发生率4.0%和对照组(74.0%、18.0%)相比,差异明显(P<0.05)。结论临床给予冠心病心绞痛疾病患者脑心清片治疗方案作用明显,可改善疾病指标,缓解临床疼痛度,值得借鉴。

关键词：脑心清片冠心病心绞痛

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脉冲激光沉积法(PLD)生长Co掺杂ZnO薄膜及其磁学性能

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发光学报 2008年第3期29卷 486-490页

作者：叶志高朱丽萍彭英姿叶志镇何海平赵炳辉浙江大学硅材料国家重点实验室浙江杭州310027 杭州电子科技大学理学院材料物理研究所浙江杭州310018

采用脉冲激光沉积(PLD)法在单晶Si(100)及石英衬底上生长Co掺杂ZnO薄膜,并且比较了不同生长条件下薄膜的性能。实验观察到了700℃、0.02Pa氧压气氛下生长的Co掺杂ZnO薄膜显示室温磁滞回线。采用XRD、SEM等手段对Co掺杂ZnO薄膜的晶体结... 详细信息

采用脉冲激光沉积(PLD)法在单晶Si(100)及石英衬底上生长Co掺杂ZnO薄膜,并且比较了不同生长条件下薄膜的性能。实验观察到了700℃、0.02Pa氧压气氛下生长的Co掺杂ZnO薄膜显示室温磁滞回线。采用XRD、SEM等手段对Co掺杂ZnO薄膜的晶体结构及微观形貌进行了分析,得到的ZnO薄膜具有高度的c轴择优取向,结构比较致密,表面平整度较高,并且没有发现Co的相关分相,初步表明Co有效地掺入了ZnO的晶格当中。霍尔测试表明Co掺杂ZnO薄膜样品保持了半导体的电学性能,电阻率为0.04Ω·cm左右,载流子浓度约为1018/cm3,迁移率都在18.7cm2/V·s以上。实验结果表明材料保持了ZnO半导体的性能,并具有室温铁磁性。

关键词：氧化锌磁性 Co掺杂脉冲激光沉积

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西宁地区改良胸腔引流术的临床研究

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青海医药杂志 2016年第11期46卷 1-3页

作者：马良泰高哲俊青海省人民医院胸外科 810007

目的:通过对西宁地区运用改良胸腔引流术治疗胸腔积液的疗效评价及临床意义分析,进一步优化西宁地区胸腔积液的治疗。方法:收集2013年1月1日—2016年1月1日在我科行胸腔改良引流术患者173例,同时又随机收集行常规胸腔闭式引流术患者150... 详细信息

目的:通过对西宁地区运用改良胸腔引流术治疗胸腔积液的疗效评价及临床意义分析,进一步优化西宁地区胸腔积液的治疗。方法:收集2013年1月1日—2016年1月1日在我科行胸腔改良引流术患者173例,同时又随机收集行常规胸腔闭式引流术患者150例,分别为改良胸腔引流术组与常规胸腔闭式引流术组,通过比较两组疗效、置管时间、患者的疼痛程度、并发症等来评价其优越性。结果:两组的疗效及引流时间无显著性差异(P>0.05)。改良胸腔引流术患者术后并发症、术后疼痛较常规胸腔闭式引流术组患者明显减少,两组数据有统计学意义(P<0.05)。结论:胸腔改良引流术安全性高、疼痛较小、并发症较少,适合多部位置管引流,此方法更适合西宁地区体质较弱且多发包裹积液患者。

关键词：西宁地区胸腔积液改良穿刺引流术

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An Unprecedented Efficiency with Approaching 21%Enabled by Additive‑Assisted Layer‑by‑Layer Processing in Organic Solar Cells

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Nano-Micro Letters 2025年第2期17卷 372-375页

作者： Shuai Xu Youdi Zhang Yanna Sun Pei Cheng Zhaoyang Yao Ning Li Long ye Lijian Zuo Ke gao Key Laboratory of Advanced Green Functional Materials College of ChemistryChangchun Normal UniversityChangchun 130032People’s Republic of China Shandong Provincial Key Laboratory for Science of Material Creation and Energy Conversion School of Chemistry and Chemical EngineeringShandong UniversityQingdao 266237People’s Republic of China College of Polymer Science and Engineering Sichuan UniversityChengdu 610065People’s Republic of China State Key Laboratory and Institute of Elemento‑Organic Chemistry Centre of Nanoscale Science and Technology and Key Laboratory of Functional Polymer MaterialsRenewable Energy Conversion and Storage Center(RECAST)College of ChemistryNankai UniversityTianjin 300071People’s Republic of China Institute of Polymer Optoelectronic Materials and Devices State Key Laboratory of Luminescent Materials and Devices South China University of TechnologyGuangzhou 510640People’s Republic of China Tianjin Key Laboratory of Molecular Optoelectronic Sciences School of Materials Science and EngineeringTianjin UniversityTianjin 300350People’s Republic of China State Key Laboratory of Silicon Materials MOE Key Laboratory of Macromolecular Synthesis and FunctionalizationDepartment of Polymer Science and EngineeringZhejiang UniversityHangzhou 310027People’s Republic of China

Recently published in Joule,Feng Liu and colleagues from Shanghai Jiaotong University reported a record-breaking 20.8%power conversion efficiency in organic solar cells(OSCs)with an interpenetrating fibril network active layer morphology,featuring a bulk p-in structure and proper vertical segregation achieved through additive-assisted layer-by-layer *** optimized hierarchical gradient fibrillar morphology and optical management synergistically facilitates exciton diffusion,reduces recombination losses,and enhances light capture *** approach not only offers a solution to achieving high-efficiency devices but also demonstrates the potential for commercial applications of OSCs.

关键词： Organic solar cells Additive-assisted layer-by-layer processing Three-dimensional fibril morphology Bulk p-i-n structure Optical management

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Based on non-targeted metabolomics for differential components screening of Rosae Chinensis Flos and Rosae Rugosae Flos and their quality evaluation

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Traditional Medicine Research 2025年第2期10卷 1-15页

作者： Xu Liang Ni-Hui Zhang zhi-Lai Zhan Guang-Lu Chang Yan gao Xia Li Wen-Yuan gao School of Pharmaceutical Science and Technology Faculty of MedicineTianjin UniversityTianjin 300193China State Key Laboratory for Quality Ensurance and Sustainable Use of Dao-di Herbs China Academy of Chinese Medical SciencesBeijing 100700China Key Laboratory of Modern Chinese Medicine Resources Research Enterprises Tianjin 300402China

Background:Rosa chinensis *** Rosa rugosa *** not only of ornamental value,but also edible flowers and the flower buds have been listed in the Chinese Pharmacopoeia as traditional *** two plants have some differences in efficacy,but the flower buds are easily confused for similar *** addition,large-scale cultivation of ornamental rose flowers may lead to a decrease in the effective components of medicinal ***,it is necessary to study the chemical composition and make quality evaluation of Rosae Chinensis Flos(Yueji)and Rosae Rugosae Flos(Meigui).Methods:In this study,40 batches of samples including Meigui and Yueji from different regions in China were collected to establish high-performance liquid chromatography ***,the fingerprints data was analyzed using principal component analysis,hierarchical cluster analysis,and partial least squares discriminant analysis analysis chemometrics to obtain information on intergroup differences,and non-targeted metabolomic techniques were applied to identify and compare chemical compositions of samples which were chosen from groups with large *** compounds were screened by orthogonal partial least-squares discriminant analysis and S-plot,and finally multi-component quantification was performed to comprehensively evaluate the quality of Yueji and ***:The similarity between the fingerprints of 40 batches roses and the reference print R was 0.73 to 0.93,indicating that there were similarities and differences between the *** principal component analysis and hierarchical cluster analysis of fingerprints data,the samples from different origins and varieties were intuitively divided into four *** least-squares discriminant analysis analysis showed that Meigui and Yueji cluster into two categories and the model was reliable.A total of 89 compounds were identified by high resolution mass spectrometry,mainly were flavonoids and flavon

关键词： Rosa chinensis Jacq. Rosa rugosa Thunb. metabolomics chemometrics multiple component quantification quality evaluation

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