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Study on gas-liquid relative permeability experiments of fractured-porous reservoirs

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Petroleum 2017年第3期3卷 348-354页

作者： ping Guo Huimin Zhang Jianfen Du Zhouhua Wang Wanbo Zhang Hongmei ren State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation Southwest Petroleum UniversityChengdu CitySichuan Province610500China East China University of Science and Technology Shanghai 2000237China Exploration and Development Research Institute PetroChina Huabei Oilfield CompanyRenqiu062552China

For carbonate reservoirs,gas-water and oil-gas relative permeability curve are of importance for parameters calculation in oil-field development,dynamic analysis and numerical reservoir *** oil-gas/gas-water relative permeability curves were measured with unstable method under normal temperature and low pressure,using fifteen artificial fractured *** shape and change characteristics of gas/water and oil/gas relative permeability curve were mainly *** results showed that for the relative permeability curve of water driving *** saturation of equal permeability point,the saturation range of two-phase flow region and the displacement efficiency has a good power-function relation with core *** addition,the saturation of equal permeability point,the saturation range of two-phase flow region and the displacement efficiency will decrease with the increasing of core ***,for oil-gas relative permeability curves,the saturation of equal permeability point,the saturation range of two-phase flow region and the displacement efficiency will increase with the increasing of core *** should be noted that the gas relative permeability presents a straight line in the normalized relative permeability curve,which indicates that the main flow is dominated by fracture with low displacement *** research results provide theory basis for fracture-vuggy carbonate reservoir development and new research idea for the further study of this kind of reservoir.

关键词： Condensate reservoir Fractured-vuggy Unstable method Gas-liquid relative permeability curve

Co-seismic changes of well water level and volume strain meter in capital area and its vicinity,due to the Nov.14,2001 Ms8.1 Kunlun Mountain earthquake,China

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Geodesy and Geodynamics 2015年第6期6卷 460-466页

作者： Huang Fuqiong Chen Yong Ji ping ren Kexin Gao Fuwang Zhang Lingkong China Earthquake Networks Center China Earthquake Administration China Earthquake Administration

The Kunlunshan Mountain Ms8.1 earthquake, occurred in Nov.14, 2001, is the first event with magnitude more than 8 in the China earthquake monitoring history, specifically at the beginning of digital techniques in precursor monitoring networks. Any investigation of recorded data on this earthquake is very important for testing the operation of the digital monitoring networks and understanding the preparation, occurrence, and adjustment of stress/strain of strong continental earthquakes. In this paper we investigated the coseismic response changes of well water level of groundwater and volume strain meter of bore hole in digital earthquake monitoring network of Capital area and its vicinity, due to the Nov.14, 2001 Ms8.1 Kunlun Mountain earthquake. The responding time, shapes or manners, amplitudes, and lasting time of well water level and strain-meters to seismic wave are studied in comparison. Then we discussed the possibility that the response changes of groundwater to strong distant earthquakes can be understood as one kind of observing evidence of stress/strain changes induced by distant earthquake.

关键词： Kunlun Mountain earthquake Co-seismic response Groundwater level in wells Volume strain meter in borehole Capital area Digital monitoring network 9th Five-Year Plan Long range correlation

Theoretical prediction of radiation-enhanced diffusion behavior in nickel under self-ion irradiation

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Nuclear Science and Techniques 2020年第8期31卷 53-63页

作者： Xiao-Ya Chen A-Li Wen Cui-Lan ren Cheng-Bin Wang Wei Zhang He-Fei Huang Zhi-Wen Chen ping Huai School of Environmental and Chemical Engineering Shanghai UniversityShanghai 200444China Shanghai Institute of Applied Physics Chinese Academy of SciencesShanghai 201800China Key Laboratory of Interfacial Physics and Technology Chinese Academy of SciencesShanghai 201800China Shanghai Synchrotron Radiation Facility Shanghai Advanced Research InstituteChinese Academy of SciencesShanghai 201204China School of Physical Science and Technology ShanghaiTech UniversityShanghai 201210China

The enhanced diffusion in materials under irradiation plays an important role in the long-term microstructural evolution. In this work, the self-ion irradiation in nickel was used as a model system to study the effect of radiation-enhanced diffusion on the implanted ion profiles. Initially, the depth profiles of vacancies and implanted ions for nickel self-ion irradiation with ion energies up to 15 MeV were computed by the high-efficiency Monte Carlo code IM3D(Irradiation of Materials in 3 D). The results are in good agreement with those predicted by SRIM(Stopping and Range of Ions in Matter).Then, diffusion coefficients as functions of temperature and damage rate were obtained, and the depth-dependent diffusion coefficients at various temperatures and damage rates were also illustrated. For this purpose, we used a temperature-dependent effective sink concentration for nickel, which was estimated from the available experimental investigations on the damage structures of irradiated nickel. At length, case studies on the time evolution of implanted ion profiles under the condition of nickel selfirradiation were performed and discussed based on Fick’s second law. The results help to understand the fundamental diffusion properties in ion irradiation, especially under higher-dose irradiation.

关键词： Self-ion irradiation in nickel Implanted ions Radiation-enhanced diffusion Monte Carlo simulation

生物质材料激光诱导石墨烯制备与应用研究进展

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林业工程学报 2024年第3期9卷 22-31页

作者：李荣荣郑佳雯任娜刘妍南京林业大学家居与工业设计学院南京210037

石墨烯作为一种新兴的二维纳米材料,凭借其独特的物理结构和化学性质,已广泛应用于各个领域。激光诱导石墨烯技术可将自然界中广泛存在的含碳生物质材料以低成本、高环保、更快捷的方式制备出石墨烯材料。首先,对可用于激光诱导石墨烯... 详细信息

石墨烯作为一种新兴的二维纳米材料,凭借其独特的物理结构和化学性质,已广泛应用于各个领域。激光诱导石墨烯技术可将自然界中广泛存在的含碳生物质材料以低成本、高环保、更快捷的方式制备出石墨烯材料。首先,对可用于激光诱导石墨烯的生物质材料种类进行总结,分析、比较了不同生物质材料制备激光诱导石墨烯的方法及工艺特点;其次,详细阐述了激光诱导石墨烯的应用领域及其性能特征,并对其发展趋势进行了总结与讨论。总结现有研究结果认为:激光诱导技术适用于多种生物质前驱体制备石墨烯,并通过制备条件(气体环境、激光光源、材料预处理)优化与组合,可实现生物质材料定向诱导改性;激光诱导石墨烯具有良好的抗菌性、电学性能、特定的电阻率等特性,且激光诱导技术具有效率高、工艺简便、成本低廉、图案可控等优势,促成其在抗菌、智能家居系统、超级电容器和传感器等领域表现出巨大的应用价值与良好的应用前景。通过对激光诱导石墨烯领域的相关研究进行综述,为创新石墨烯制备技术提供了理论指导,也为拓宽该领域的研究和应用提供了思路。

关键词：激光诱导石墨烯生物质材料抗菌性能智能家居超级电容器传感器

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基于改进Tennant法的打鱼凼水利工程生态流量计算与评价

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水利科技与经济 2024年第3期30卷 64-69页

作者：毕仁芬贵州省兴仁市水务局贵州兴仁562300

在打鱼凼水利工程生态流量评价中,改进的Tennant法表现优秀,其评价综合关联度优于其他综合关联度方法。研究显示,理想的生态流量应占年均流量的30%~60%;最佳生态流量应占40%~80%,在这个范围内,河流生态系统稳定性增强;当生态流量在60%~1... 详细信息

在打鱼凼水利工程生态流量评价中,改进的Tennant法表现优秀,其评价综合关联度优于其他综合关联度方法。研究显示,理想的生态流量应占年均流量的30%~60%;最佳生态流量应占40%~80%,在这个范围内,河流生态系统稳定性增强;当生态流量在60%~100%时,是最适宜的生态流量。结合麻沙河干流水电开发规划,对实际意义上提高水资源利用效率。结果表明,改进Tennant法在生态流量评价中的优势,在水资源认识、管理以及河流生态系统保护中具有重要价值。

关键词： Tennant法生态流量打鱼凼水利物元分析法麻沙河

Breakdown of Raman selection rules by Frohlich interaction in few-layer WS_(2)

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Nano Research 2021年第1期14卷 239-244页

作者： Qing-Hai Tan Yu-Jia Sun Xue-Lu Liu Kai-Xuan Xu Yuan-Fei Gao Shu-Liang ren ping-Heng Tan Jun Zhang State Key Laboratory of Superlattices and Microstructures Institute of SemiconductorsCenter of Materials Science and Optoelectronics EngineeringCAS Center of Excellence in Topological Quantum ComputationUniversity of Chinese Academy of SciencesBeijing 100083China Beijing Academy of Quantum Information Science Beijing 100193China

The polarization selection rule of Raman scattering is crucial in symmetry analysis of elementary excitations in semiconductors and correlated electron *** we reported the observation of breakdown of Raman selection rules in few-layer WS_(2) by using resonant Raman *** the excitation energy is close to the dark A exciton state,we observed some infrared active modes and backscattering forbidden ***,we found that all observed phonon modes follow the same paralleled-polarization *** to the electron-phonon coupling near the band edge in WS_(2),we proposed a theoretical model based on the intraband Frohlich *** this case,the polarization response of the scattering signal is no longer determined by the original Raman tensor of scattered ***,it is determined by a new isotropic Raman tensor that generated from this intraband Frohlich interaction between dark A exciton and *** found that this theoretical model is in excellent agreement with the observed *** breakdown of Raman selection rules can violate the conventional limitations of the optical response and provide an effective method to control the polarization of Raman scattering signals in two-dimensional materials.

关键词： WS_(2) resonant Raman scattering dark exciton Raman section rules Frohlich interaction

Effects of Cadmium Stress on Seed Germination, Seedling Growth and Seed Amylase Activities in Rice (Oryza sativa)

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Rice science 2008年第4期15卷 319-325页

作者： Jun-yu HE[a] Yan-fang ren[a] Cheng ZHU[b] De-an jiang[b] [a] College of Agriculture Guizhou University Guiyang 550025 China [b] College of Life Sciences Zhejiang University Hangzhou 310058 China

Two rice varieties, Xiushui 110 with high cadmium (Cd) tolerance and Xiushui 11 with low Cd tolerance were used to study the effects of Cd stress on seed germination, seedling growth and amylase activities. The low cadmium concentration had little effect on seed germination rate. However, cadmium stress could significantly inhibit plumule and radicle growth, especially for radicle growth. Germination index, vigour index, radicle length and amylase activities of Xiushui 11 decreased more significantly with the increasing cadmium level compared with Xiushui 110. The cadmium content in seedlings of Xiushui 11 was higher than that in Xiushui 110 when the cadmium concentration exceeded 5 μmol/L, which caused lower mitotic index in root tips and amylase activities, and more serious cadmium toxicity in Xiushui 11.

关键词： cadmium rice seed germination root length mitotic index amylase activity

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围术期睡眠质量对术后疼痛的影响研究进展

协和医学杂志 2024年第4期15卷 897-903页

作者：金迪聂卫华任立英申乐中国医学科学院北京协和医院麻醉科北京100730 中国医学科学院北京协和医院手术室北京100730

术后疼痛是患者围术期管理中的常见问题,对患者术后体验、功能恢复均产生不良影响。除手术创伤外,围术期相关风险因素亦会导致术后疼痛的发生,其中围术期睡眠质量不容忽视。近年来,越来越多的研究表明,围术期睡眠质量不佳是术后疼痛的... 详细信息

术后疼痛是患者围术期管理中的常见问题,对患者术后体验、功能恢复均产生不良影响。除手术创伤外,围术期相关风险因素亦会导致术后疼痛的发生,其中围术期睡眠质量不容忽视。近年来,越来越多的研究表明,围术期睡眠质量不佳是术后疼痛的一项风险因素,且睡眠质量可直接影响患者的痛阈。因此,本文就睡眠质量的评估、围术期睡眠质量影响术后疼痛的机制及干预方式等方面展开综述,以期为提升患者围术期疼痛管理水平提供参考。

关键词：睡眠质量术后疼痛围术期管理

Extensive retroperitoneal and right thigh abscess in a patient with ruptured retrocecal appendicitis:An extremely fulminant form of a common disease

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World Journal of Gastroenterology 2006年第3期12卷 496-499页

作者： Chi-Hsun Hsieh Yu-Chun Wang Horng-ren Yang ping-Kuei Chung Long-Bin Jeng Ray-Jade Chen Department of Traumaand Emergency Surgery China Medical University HospitalTaichung Taiwan China

As a disease commonly encountered in daily practice, acute appendicitis is usually diagnosed and managed easily with a low mortality and morbidity rate. However, acute appendicitis may occasionally become extraordinarily complicated and life threatening. A 56-year-old man, healthy prior to this admission, was brought to the hospital due to spiking high fever, poor appetite, dysuria, progressive right flank and painful swelling of the thigh for 3 d. Significant inflammatory change of soft tissue was noted, involving the entire right trunk from the subcostal margin to the knee joint. Painful disability of the right lower extremity and apparent signs of peritonitis at the right lower abdomen were disclosed. Laboratory results revealed leukocytosis and an elevated C-reactive protein level. Abdominal CT revealed several communicated gas-containing abscesses at the right retroperitoneal region with mass effect, pushing the duodenum and the pancreatic head upward, compressing and encasing inferior vena cava, destroying psoas muscle and dissecting downward into the right thigh. Laparotomy and right thigh exploration were performed immediately and about 500 mL of frank pus was drained. A ruptured retrocecal appendix was the cause of the abscess. The patient fully recovered at the end of the third post-operation week. This case reminds us that acute appendicitis should be treated carefully on an emergency basis to avoid serious complications. CT scan is the diagnostic tool of choice, with rapid evaluation followed by adequate drainage as the key to the survival of the patient.

关键词： Acute appendicitis Retrocecal appendicitis Complication Retroperitoneal abscess Thigh abscess