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Interfacial Engineering of Polymer Blend with Janus Particle as Compatibilizer

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Chinese Journal of Polymer Science 2023年第4期41卷 500-515,I0005页

作者： Hai-Ling He Fu-Xin liang Institute of Polymer Science and Engineering Department of Chemical EngineeringTsinghua UniversityBeijing100084China

Mixing two or more polymers to produce the“polymer alloy”is one of the most versatile and economical strategies for developing new polymeric *** compatibility between polymer components largely determines the comprehensive performance of polymer *** recently,a type of unique surface partitioned materials,Janus particles,has been proposed to act as a novel interfacial compatibilizer for polymer *** Janus particles integrates the amphipathicity of diblock copolymer and interfacial stabilization of nanoparticles,displaying a significant superiority in comparison with molecular compatibilizers for a wide range of polymer *** this review,we mainly focus on the compatibilizing effects of Janus nanofillers of various morphologies,including spherical,snowman-like,and two-dimensional nanosheets,on polymer *** shed light on the impacts of compatibilization of Janus particles on phase morphologies,mechanical properties,and functionalities of polymer *** review could provide a guidance for designing an effective Janus particle compatibilizer to develop high-performance polymer blends.

关键词： Janus particles Compatibilizer Polymer blend Interfacial engineering

Therapeutic efficacy of baclofen in refractory gastroesophageal reflux-induced chronic cough

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World Journal of Gastroenterology 2013年第27期19卷 4386-4392页

作者： Xiang-Huai Xu Zhong-Min Yang Qiang Chen Li Yu Si-wei liang Han-Jing Lv Zhong-Min Qiu Department of Respiratory Medicine Tongji HospitalTongji University School of Medicine

AIM:To evaluate the efficacy and safety of baclofen for treatment of refractory gastroesophageal reflux-induced chronic cough (GERC) unresponsive to standard anti-reflux therapy. METHODS:Sixteen patients with refractory GERC were given an 8-wk course of baclofen 20 mg three times a day as an add-on therapy to omeprazole. Changes in the cough symptom score, cough threshold to capsaicin, reflux symptom score and possible adverse effects were determined after treatment. The variables of multi-channel intraluminal impedance combined with pH monitoring were compared between responders and non-responders to baclofen. RESULTS:Twelve of 16 patients completed treatment. Cough disappeared or improved in 56.3% (9/16)of patients, including 6 patients with acid refluxinduced cough (66.7%) and 3 patients with non-acid reflux-induced cough (33.3%). With baclofen treatment, the cough symptom score began to decrease at week 2, was clearly decreased at week 6 and reached a minimum at week 8. At the end of therapy, the lowest concentration of capsaicin required for induction of ≥ 2 and ≥ 5 coughs increased from 0.98 (1.46) to 1.95 (6.82) μmol/L (Z = -2.281, P = 0.024) and from 1.95 (7.31) to 7.8 (13.65) μmol/L (Z = -2.433, P = 0.014), respectively, and the reflux symptom score decreased from 8.0 ± 1.6 to 6.8 ± 0.8 (t = 2.454, P = 0.023). The number of acid reflux episodes was significantly lower in responders than in non-responders. The main adverse effects were somnolence, dizziness and fatigue. CONCLUSION:Baclofen is a useful, but suboptimal treatment option for refractory GERC.

关键词： Baclofen Cough Esophageal pH monitoring Gastroesophageal reflux Proton pump inhibitors

Blue-Light Emission from Nanocrystalline La_(0.5)Na_(0.5)TiO^(3)

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Chinese Physics Letters 1998年第10期15卷 758-760页

作者： ZHANG wei-feng ZHANG Xing-tang YIN Zhen ZHANG Ming-sheng MA Guo-hong DU Zu-liang Center for Materials Analysis and National Laboratory of Solid State Microstructures Nanjing UniversityNanjing 210093 Department of Physics He’nan UniversityKaifeng 475001

Nanocrystalline La_(0.5)Na_(0.5)TiO^(3) powders were prepared by the stearic acid-gel method,and the grain sizes could be controlled by varying annealing *** sizes were determined to be from 14 to 50nm using Scherrer's formula.A very strong blue-light emission band around 480nm was clearly observed in the nano-sized La_(0.5)Na_(0.5)TiO^(3) with a grain size of 14nm at room ***,nano-size effects on the luminescence properties were *** results could be explained with the aid of a self-trapped exciton model.

关键词： temperature. sizes sized

Seepage model and experiments of drag reduction by nanoparticle adsorption

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Journal of Hydrodynamics 2013年第6期25卷 871-876页

作者：龚玮狄勤丰王新亮华帅张任良叶峰 Shanghai Institute of Applied Mathematics and Mechanics and Shanghai Key Laboratory of Mechanics in Energy Engineering Shanghai University

The hydrophobic nanoparticle （HNP） adsorption is a new technique of drag reduction, which changes the wettability of the porous walls of the core, generates the slip-boundary of the fluid flow and consequently enhances the oil recovery. In the present work, a seepage model with consideration of the slip effect in the micro-channels and the influence of the equivalent pore radius mo- dified by the HNP adsorption is proposed based onthe Darcy＇s law. The permeability of the non-wetting phase in the porous media is calculated according to its dependence on the slip length, while the slip length is determined by a function of the contact angle and the equivalent pore radius. Numerical simulations are performed by use of the COMSOL multiphysics, and an acceptable agreement between experimental and simulation results is achieved （with an error less than 2.5%）. The present model can then be used for the mechanism investigation and the prediction of the oilfield performance.

关键词： seepage model slip effect drag reduction nanoparticle adsorption permeability

Probing New Physics from CP Violation in Radiative B Decays

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Chinese Physics Letters 1999年第5期16卷 339-341页

作者： WU Yue-liang Institute of Theoretical Physics Chinese Academy of SciencesBeijing 100080

When new CP-violating interactions are dominated by flavor changing neutral particle exchanges,which may occur in many extensions of the standard model,we examine a type-3 two-Higgs-doublet model and find that direct CP asymmetries can be as large as about 25%.Time-dependent and time-integrated mixing-induced CP asymmetries up to 85 and 40%,respectively,are possible without conflict with other *** mainly requirs an enhanced chromo-magnetic dipole b→sg decay to be close to the present experimental bound.

关键词： neutral mixing decay

An efficient synthesis of 2,2-bis(1H-indol-3-yl)-2H-acenaphthen-1-one catalyzed by recyclable solid superacid SO_4^(2-)/TiO_2 under grinding condition

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Chinese Chemical Letters 2010年第9期21卷 1057-1061页

作者： Guo liang Feng School of Science Hebei University of Science and Technology Shijiazhuang 050018 China

An efficient synthesis of symmetrical 2,2-bis（1H-indol-3-yl）-2H-acenaphthen-1-one is achieved via a reaction of acenaphthe-nequinone and indoles catalyzed by solid superacid SO4^2-/TiO2 under solvent-free conditions at room temperature by grinding, which provides an efficient route to the synthesis of symmetrical 2,2-bis（1H-indol-3-yl）-*** procedure offers several advantages including solvent-free conditions,excellent yields of products,simple work-up as well as reuse of catalysts which makes it a useful and attractive protocol for the synthesis of these compounds.

关键词： Acenaphthenequinone Indole Solid superacid SO4^2-/TiO2 2,2-Bis(1H-indol-3-yl)-2H-acenaphthen-1-one

Nash-equilibrium strategies of orbital TargetAttacker-Defender game with a non-maneuvering target

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Chinese Journal of Aeronautics 2024年第10期37卷 365-379页

作者： Yifeng LI Xi liang Zhaohui DANG School of Astronautics Northwestern Polytechnical UniversityXi’an 710072China Beijing Institute of Astronautical Systems Engineering Beijing 100076China

This study investigates the orbital Target-Attacker-Defender(TAD)game problem in the context of space *** this game,the Attacker and the Defender compete for a Target that is unable to maneuver due to its original mission *** paper establishes three TAD game models based on the thrust output capabilities:unconstrained thrust output,thrust constrained by an upper bound,and fixed thrust *** models are then solved using differential game theory to obtain Nash equilibrium solutions for the game problems,and the correctness and effectiveness of the solution methods are verified through ***,an analysis of the winning mechanisms of the game is conducted,identifying key factors that influence the game’s outcomes,including weight coefficients in payoffs,the maximum thrust acceleration limit,and the initial game *** the unique characteristics of space missions,a specific focus is given to the analysis of the Defender’s initial states in the hovering formation and in-plane circling formation,revealing overall success patterns for defense strategies from these two *** summary,this study provides valuable insights into the control strategies and winning mechanisms of orbital TAD games,deepening our understanding of these games and offering practical guidance to improve success rates in real-world scenarios.

关键词： Target-Attacker-Defender problem Differential game TPBVP Continuous thrust Orbital game

An inversion model based on GEOS-Chem for estimating global and China's terrestrial carbon fluxes in 2019

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Advances in Climate Change Research 2023年第1期14卷 49-61页

作者： Chong-Yuan WU Xiao-Ye ZHANG Li-Feng GUO Jun-Ting Zhong De-Ying WANG Chang-hong MIAO Xiang GAO Xi-liang ZHANG Monitoring and Assessment Center for GHGs and Carbon&Key Laboratory of Atmospheric Chemistry of China Meteorological Administration Chinese Academy of Meteorological SciencesBeijing 100081China Zhejiang Institute of Meteorological Science Zhejiang Meteorological BureauHangzhou 310017China Laboratory of Climate Change Mitigation and Carbon Neutrality Henan UniversityZhengzhou 450001China State Key Laboratory of Clean Energy Utilization State Environmental Protection Center for Coal-Fired Air Pollution ControlZhejiang UniversityHangzhou 310027China Institute of Energy Environment and EconomyTsinghua UniversityBeijing 100084China

The 2019 Refinement to the 2006 IPCC Guidelines for National Greenhouse Gas Inventories added the method of assimilating atmospheric CO_(2) concentrations to invert carbon sources and sinks;however,many global carbon inversion models are not publicly *** addition,our regional assimilation inversion system,CCMVS-R(China Carbon Monitoring,Verification and Supporting for Regional),needs a global carbon inversion model with higher assimilation efficiency to provide boundary ***,an inversion model based on the global atmospheric chemistry model GEOS-Chem and a more accurate and easier-to-implement ensemble square root Kalman filter(EnSRF)algorithm is constructed and used to infer global and China's carbon fluxes in *** CO_(2) concentrations from ObsPack sites and five additional CO_(2) observational sites from China's Greenhouse Gas Observation Network(CGHGNET)were used for data assimilation to improve the *** inverted annual global terrestrial and oceanic carbon uptake is 2.12 and 2.53 Pg C per year,respectively,accounting for 21.1%and 25.1%of global fossil fuel CO_(2) *** remaining 5.41 Pg C per year in the atmosphere is consistent with the global atmospheric CO_(2) growth rates of 5.44 Pg C per year reported by the National Oceanic and Atmospheric Administration(NOAA),showing that the inversion model can provide a reasonable estimate of global-scale natural carbon *** inverted terrestrial carbon sink of China is 0.37 Pg C per year,accounting for approximately 13%of China's fossil CO_(2) emissions.

关键词： CO_(2) Data assimilation EnSRF GEOS-Chem Terrestrial carbon fluxes

Upper gastrointestinal cancer burden in Hebei Province, China: A population-based study

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World Journal of Gastroenterology 2017年第14期23卷 2625-2634页

作者： Dao-Juan Li Di liang Guo-Hui Song Yong-wei Li Deng-Gui Wen Jing Jin Yu-Tong He Cancer Institute The Fourth Hospital of Hebei Medical University/The Tumour Hospital of Hebei Province Cixian Cancer Institute Shexian Cancer Institute

AIM To investigate the incidence and mortality rates of upper gastrointestinal cancer(UGIC) in Hebei Province, China, and to identify high-risk populations to improve UGIC prevention and *** Data for UGIC patients were collected from 21 population-based cancer registries covering 15.25% of the population in Hebei Province. Mortality data were extracted from three national retrospective death surveys(1973-1975, 1990-1992 and 2004-2005). The data were stratified by 5-year age groups, gender and area(high-risk/non-high-risk areas) for analysis. The age-period-cohort and grey system model were *** The crude incidence rate of UGIC was 55.47/100000, and the adjusted rate(Segi's population) was 44.90/100000. Males in rural areas had the highest incidence rate(world age-standardized rate = 87.89/100000). The crude mortality rate of UGIC displayed a decreasing trend in Hebei Province from the 1970 s to 2013, and the adjusted rate decreased by 43.81% from the 1970s(58.07/100000) to 2013(32.63/100000). The mortality rate declined more significantly in the high-risk areas(57.26%) than in the non-high-risk areas(55.02%) from the 1970 s to 2013. The median age at diagnosis of UGIC was 65.06 years in 2013. There was a notable delay in the median age at death from the 1970s(66.15 years) to 2013(70.39 years), especially in the high-risk areas. In Cixian, the total trend of the cohort effect declined, and people aged 65-69 years were a population at relatively high risk for UGIC. We predicted that the crude mortality rates of UGIC in Cixian and Shexian would decrease to 98.80 and 133.99 per 100000 in 2018, *** UGIC was the major cause of cancer death in Hebei Province, and males in rural areas were a high-risk population. We should strengthen early detection and treatment of UGIC in this population.

关键词： Upper gastrointestinal cancer Incidence Mortality Age-period-cohort Grey system model