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A micro-crosslinked amphoteric hydrophobic association copolymer as high temperature-and salt-resistance fluid loss reducer for water-based drilling fluids

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Petroleum Science 2024年第3期21卷 1980-1991页

作者： Jian Li Yu-Xi Ji xiao-xiao ni Kai-He Lv Xian-Bin Huang Jin-Sheng Sun School of Petroleum Engineering China University of Petroleum(East China)Qingdao266580ShandongChina Key Laboratory of Unconventional Oil&Gas Development China University of Petroleum(East China)Qingdao26650ShandongChina Inspection and Testing Center of Huabei Oil Field Company PetroChinaRenqiu062552HebeiChina Drilling Fluid Research Institute CNPC Engineering Technology R&D Company LimitedBeijing102206China

During ultradeep oil and gas drilling,fluid loss reducers are highly important for water-based drilling fluids,while preparing high temperature-and salt-resistance fluid loss reducers with excellent rheology and filtration performance remains a ***,a micro-crosslinked amphoteric hydrophobic association copolymer(i.e.,DADC)was synthesized using N,N-dimethyl acrylamide,diallyl dimethyl ammonium chloride,2-acrylamido-2-methylpropane sulfonic acid,hydrophobic monomer,and pentaerythritol triallyl ether *** to the synergistic effects of hydrogen bonds,electrostatic interaction,hydrophobic association,and micro-crosslinking,the DADC copolymer exhibited outstanding temperature-and *** rheological experiments have shown that the DADC copolymer had excellent shear dilution performance and a certain degree of salt-responsive viscosity-increasing *** DADC copolymer could effectively adsorb on the surface of bentonite particles through electrostatic interaction and hydrogen bonds,which bring more negative charge to the bentonite,thus improving the hydration and dispersion of bentonite particles as well as the colloidal stability of the drilling ***,the drilling fluids constructed based on the DADC copolymer exhibited satisfactory rheological and filtration properties(FLHTHP=12 m L)after aging at high temperatures(up to200℃)and high salinity(saturated salt)***,this work provided new insights into designing and fabricating high-performance drilling fluid treatment agents,demonstrating good potential applications in deep and ultradeep drilling engineering.

关键词： Fluid loss reducer Temperature-and salt-resistance Hydrophobic association Amphoteric Micro-crosslinking

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激光等离子体及点爆炸空气冲击波波前运动方程的研究

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物理学报 2002年第4期51卷 809-813页

作者：卞保民杨玲陈笑倪晓武南京理工大学应用物理系南京210094

根据激光等离子体空气冲击波在自由空间中传播的约束条件导出的空气冲击波前运动方程与点爆炸波泰勒解进行比较 ,证明泰勒解是该冲击波波前传播方程在中场的近似形式 .并将该冲击波运动方程与强爆炸空气冲击波的实验进行比较。

关键词：核爆炸泰勒解波前运动方程激光等离子体空气冲击波点爆炸

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补肾柔肝解郁汤治疗围绝经期抑郁症的临床观察

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中国中医基础医学杂志 2017年第3期23卷 364-366页

作者：高志生倪烨肖晓倪建俐上海交通大学医学院附属新华医院崇明分院上海202150 上海交通大学医学院附属新华医院上海200092

目的:探讨补肾柔肝解郁汤治疗围绝经期抑郁症患者的临床疗效及对血E_2、FSH、LH水平的影响。方法:将100例围绝经期抑郁症患者随机分为2组各50例。对照组给予黛力新(氟哌噻吨美利曲辛片)治疗,早晨和中午各1粒;治疗组给予补肾柔肝解郁汤治... 详细信息

目的:探讨补肾柔肝解郁汤治疗围绝经期抑郁症患者的临床疗效及对血E_2、FSH、LH水平的影响。方法:将100例围绝经期抑郁症患者随机分为2组各50例。对照组给予黛力新(氟哌噻吨美利曲辛片)治疗,早晨和中午各1粒;治疗组给予补肾柔肝解郁汤治疗,2组连续治疗8周后观察所有病例的HAMD、PSQI评分及血E_2、FSH、LH水平变化。结果:治疗8周后,2组病例的HAMD、PSQI评分较治疗前均有显著性改善且治疗组优于对照组,而2组E_2、FSH、LH等激素水平无明显改善。结论:补肾柔肝解郁汤治疗围绝经期抑郁症疗效较好,其作用机理可能是增强患者机体对雌性激素紊乱的适应能力。

关键词：围绝经期抑郁症补肾柔肝解郁汤氟哌噻吨美利曲辛中医药疗法

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水体悬浮泥沙浓度新型监测方法综述

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节能与环保 2020年第1期 68-69页

作者：肖小妮北控技术服务(广东)有限公司

水体悬浮泥沙浓度作为表征水质优劣的一个重要特性,不仅直接影响水质透明度和水色等光学特性,而且对水生生态环境和河口海岸带冲淤演变过程也有显著影响。因此,水体悬浮泥沙浓度的监测对水体环境具有重要的现实意义。而传统的过滤称量... 详细信息

水体悬浮泥沙浓度作为表征水质优劣的一个重要特性,不仅直接影响水质透明度和水色等光学特性,而且对水生生态环境和河口海岸带冲淤演变过程也有显著影响。因此,水体悬浮泥沙浓度的监测对水体环境具有重要的现实意义。而传统的过滤称量法虽然具备较高的精度,但存在着耗时长、工作量大、数据不连续及丢失等问题,不再适合于观察复杂的泥沙运动和实地监测。对此,本文从声学测量、卫星遥感、光学测量等方面分析了近年的悬浮泥沙浓度新型监测方法,并针对目前新型监测方法存在的主要问题,提出了在未来研究中需要改进的内容和建议,有利于悬浮泥沙浓度检测领域新技术的创新和发展。

关键词：悬浮泥沙浓度遥感光学测量声学测量

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活性乳酸菌饮料生产工艺技术研究

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现代食品科技 2005年第2期21卷 124-124,111页

作者：肖小妮广州市轻工研究所广东广州510075

本文研制了一种乳酸菌饮料,实验证明该产品风味独特、口感清爽、有益身体健康。

关键词：乳酸菌饮料研配

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MicroRNAs for diagnosis of lymph node metastases from primary suproglottic laryngeal squamous cell carcinoma

MicroRNAs for diagnosis of lymph node metastases from primar...

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中华医学会肿瘤学分会第七届全国中青年肿瘤学术会议——中华医学会肿瘤学分会“中华肿瘤明日之星”大型评选活动暨中青年委员全国遴选

作者： Tai Jun~1,xiao xiao~1,Xin ni~2 1 Beijing Tongren hospital affiliated to Capital Medical University 2 Beijing Anzhen hospital affiliated to Capital Medical University

Purpose Metastasis is the process by which cancers spread to distinct sites in the *** is the principal cause of death in individuals suffering from *** laryngeal squamous cell carcinoma (Suproglottic LSCC) patients are apt to cervical lymph node metastasis and have poorer *** purpose of this study is to identify the microRNAs expression profiles associated with lymph node metastasis of LSCC.

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Catalyst–Support Interaction in Polyaniline‑Supported ni_(3)Fe Oxide to Boost Oxygen Evolution Activities for Rechargeable Zn‑Air Batteries

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Nano-Micro Letters 2025年第1期17卷 176-190页

作者： xiaohong Zou Qian Lu Mingcong Tang Jie Wu Kouer Zhang Wenzhi Li Yunxia Hu xiaomin Xu xiao Zhang Zongping Shao Liang An Department of Mechanical Engineering The Hong Kong Polytechnic UniversityHung HomKowloonHong Kong SARPeople’s Republic of China Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control Jiangsu Collaborative Innovation Center of Atmospheric Environment and Equipment TechnologySchool of Environmental Science and TechnologyNanjing University of Information Science and TechnologyNanjing 210044People’s Republic of China Department of Chemistry The Chinese University of Hong KongMa Lin BuildingShatinHong Kong SAR 999077People’s Republic of China WA School of Mines:Minerals Energy and Chemical Engineering(WASM‑MECE)Curtin UniversityPerthWA 6102Australia Research Institute for Advanced Manufacturing The Hong Kong Polytechnic UniversityHung HomKowloonHong Kong SARPeople’s Republic of China Research Institute for Smart Energy The Hong Kong Polytechnic UniversityHung HomKowloonHong Kong SARPeople’s Republic of China

Catalyst–support interaction plays a crucial role in improving the catalytic activity of oxygen evolution reaction(OER).Here we modulate the catalyst–support interaction in polyaniline-supported ni_(3)Fe oxide(ni_(3)Fe oxide/PAni)with a robust hetero-interface,which significantly improves oxygen evolution activities with an overpotential of 270 mV at 10 mA cm^(-2)and specific activity of 2.08 mA cm_(ECSA)^(-2)at overpotential of 300 mV,3.84-fold that of ni_(3)Fe *** is revealed that the catalyst–support interaction between ni_(3)Fe oxide and PAni support enhances the ni–O covalency via the interfacial ni–N bond,thus promoting the charge and mass transfer on ni_(3)Fe *** the excellent activity and stability,rechargeable Zn-air batteries with optimum ni_(3)Fe oxide/PAni are assembled,delivering a low charge voltage of 1.95 V to cycle for 400 h at 10 mA cm^(-2).The regulation of the effect of catalyst–support interaction on catalytic activity provides new possibilities for the future design of highly efficient OER catalysts.

关键词： Catalyst-support interaction Supported catalysts Heterointerface Oxygen evolution reaction Zn-air batteries

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Preliminary Design of a System for Picking up Audio-Signals From Bubble Detectors GAO Si-ze1,ni Bang-fa,ZHANG Gui-ying,xiao Cai-jin,LIU Cun-xiong, CHEN Zhe1,niE Peng,LIU Chao1,ZHAO Chang-jun (*** of Physics Science and Engineering Technology,Guang

Preliminary Design of a System for Picking up Audio-Signals ...

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作者： GAO Si-ze ni Bang-fa ZHANG Gui-ying xiao Cai-jin LIU Cun-xiong CHEN Zhe niE Peng LIU Chao ZHAO Chang-jun College of Physics Science and Engineering Technology Guangxi University

This system is designed to pick up sound signals from large volume,low-threshold energy, low-background superheated droplets bubble detectors.A sound-sensitive bubble detector is composed of a container filled with a mixture of superheated droplets and gel,a temperature and pressure control system,and an audio acquisition system attached on the outer surface of the *** superheated droplets are in a metastable and superheated state at ambient temperature and *** the outside

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Changing patterns of urban-rural nutrient flows in China:driving forces and options

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Science Bulletin 2017年第2期62卷 83-91页

作者： Chaoqing Yu Yuchen xiao Shaoqiang ni Department of Earth System Science Ministry of Education Key Laboratory for Earth System Modeling Tsinghua University Beijing 100084 China

Nutrient recycling has been practiced for thousands of years in China to maintain food production without environmental pollution. In the past three decades, however, the traditional nutrient recycling systems have been replaced with waste treatment systems, which have resulted in rapid and severe environmental pollution. By analyzing the primary driving forces of the changing nutrient flows(technology, labor costs, food supplies, fertilizer demands, environmental quality, human health, and public awareness), this paper argues that technology fundamentally motivated the nutrient-recycling strategy to address the malnutrition problem in traditional societies but has constrained the reconstruction of nutrient recycling systems in modern cities. With the availability of synthetic fertilizers in modern society, the lack of interdisciplinary views in policy making for nutrient management is the root cause of today's environmental situation. Ongoing fast urbanization has concentrated more nutrients in urban areas, creating the need for a national nutrient management plan to coordinate multiple ministries and fix the uncoupled nutrient cycling between urban and rural systems. Rebuilding the traditional nutrient-recycling systems is an environmentally and economically effective solution. There are three fundamental technological barriers to reconstructing the nutrient recycling systems, as follows: userfriendly toilets, the separation of sewage pipelines, and easy-to-use organic fertilizers made from human manure or other organic waste. Overcoming these barriers requires building institutional mechanisms,developing the necessary infrastructure, creating research funding, and providing open experimental platforms for technological development.

关键词：养分循环驱动力变化规律流动中国废物处理系统营养循环技术壁垒

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New adaptive time step symplectic integrator:an application to the elliptic restricted three-body problem

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Research in Astronomy and Astrophysics 2014年第10期14卷 1329-1342页

作者： xiao-Ting ni Xin Wu Department of Physics Nanchang University

The time-transformed leapfrog scheme of Mikkola ＆ Aarseth was specifi- cally designed for a second-order differential equation with two individually separable forms of positions and velocities. It can have good numerical accuracy for extremely close two-body encounters in gravitating few-body systems with large mass ratios, but the non-time-transformed one does not work well. Following this idea, we develop a new explicit symplectic integrator with an adaptive time step that can be applied to a time-dependent Hamiltonian. Our method relies on a time step function having two distinct but equivalent forms and on the inclusion of two pairs of new canonical con- jugate variables in the extended phase space. In addition, the Hamiltonian must be modified to be a new time-transformed Hamiltonian with three integrable parts. When this method is applied to the elliptic restricted three-body problem, its numerical pre- cision is explicitly higher by several orders of magnitude than the nonadaptive one＇s, and its numerical stability is also better. In particular, it can eliminate the overestima- tion of Lyapunov exponents and suppress the spurious rapid growth of fast Lyapunov indicators for high-eccentricity orbits of a massless third body. The present technique will be useful for conservative systems including N-body problems in the Jacobian coordinates in the the field of solar system dynamics, and nonconservative systems such as a time-dependent barred galaxy model in a rotating coordinate system.

关键词： celestial mechanics -- methods numerical -- planetary systems --chaos

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