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Effects of slag fineness on durability of mortars

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Journal of Zhejiang university-Science A(Applied Physics & Engineering) 2007年第11期8卷 1725-1730页

作者： TOPu lker Bekir BlR Turhan Department of Civil Engineering Eski■ehir Osmangazi university Eski■ehir 26480 Turkey

In recent years, the usages of by-products and wastes in industry have become more important. The importance of the sustainable development is also of increasing. The utilizations of wastes, as mineral admixture or fine aggregate, reduce the consumption of the natural resources and improve the durability of concrete. In this study, the effect of the fineness on the high temperature and sulphate resistances of concrete mortar specimens, produced with ground granulated blast-furnace slag (GBFS) replacing cement, is investigated. The compressive and flexural strength test results for all series related to durability effects, exposing temperature and solutions, exposure times for these durability effects, slag content and fineness are discussed. Conse- quently, the optimum slag contents are determined for producing the sulphate and high temperature resistant mortars.

关键词： Cement Fineness Ground slag High temperature effect Sulphate attack Sustainable development

Structurally Flexible 2D Spacer for Suppressing the Electron-Phonon Coupling Induced Non-Radiative Decay in Perovskite Solar Cells

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Nano-Micro letters 2024年第9期16卷 325-340页

作者： Ruikun Cao Kexuan Sun Chang l.u Yuhong Mao Wei Guo Ping Ouyang Yuanyuan Meng Ruijia Tian lisha Xie Xujie lü Ziyi Ge Zhejiang Provincial Engineering Research Center of Energy Optoelectronic Materials and Devices Ningbo Institute of Materials Technology and EngineeringChinese Academy of SciencesNingbo 315201People’s Republic of China School of Materials Science and Chemical Engineering Ningbo UniversityNingbo 315211People’s Republic of China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing 100049People’s Republic of China Center for High Pressure Science and Technology Advanced Research(HPSTAR) Shanghai 201203People’s Republic of China

This study presents experimental evidence of the dependence of non-radiative recombination processes on the electron-phonon coupling of perovskite in perovskite solar cells(PSCs).Via A-site cation engineering,a weaker electron-phonon coupling in perovskite has been achieved by introducing the structurally soft cyclohexane methylamine(CMA^(+))cation,which could serve as a damper to alleviate the mechanical stress caused by lattice oscillations,compared to the rigid phenethyl methylamine(PEA^(+))*** demonstrates a significantly lower non-radiative recombination rate,even though the two types of bulky cations have similar chemical passivation effects on perovskite,which might be explained by the suppressed carrier capture process and improved lattice geometry *** resulting PSCs achieve an exceptional power conversion efficiency(PCE)of 25.5%with a record-high opencircuit voltage(V_(OC))of 1.20 V for narrow bandgap perovskite(FAPbI_(3)).The established correlations between electron-phonon coupling and non-radiative decay provide design and screening criteria for more effective passivators for highly efficient PSCs approaching the Shockley-Queisser limit.

关键词： Electron-phonon coupling A-site cation engineering Non-radiative recombination

Development and verification of the cytoplasmic-nuclear male sterile soybean line NJCMS1A and its maintainer NJCMS1B

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Chinese Science Bulletin 1999年第2期44卷 191-192页

作者： derong Ding Junyi Gai Zhanglin Cui Shouping Yang Jiaxun Qiu Nanjiang Agr univ Soybean Res Inst Nanjing 210095 Peoples R China

THE first cytoplasmic male sterile soybean line was reported by Davis in a u.S. Patent, but no further information has been released since then. Sun et al. developed a cytoplasmic-nuclear male sterile soy-

关键词： gene line Development and verification of the cytoplasmic-nuclear male sterile soybean line NJCMS1A and its maintainer NJCMS1B

Pulsations of Three Rapidly Oscillating Ap Stars TIC 96315731,TIC72392575,and TIC 318007796

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Research in Astronomy and Astrophysics 2024年第8期24卷 157-168页

作者： Hai-Jian Zhong Dong-Xiang Shen Chun-Hua Zhu He-lei l.u Su-Fen Guo Guo-liang lü School of Physical Science and Technology Xinjiang UniversityUrumqi 830046China Xinjiang Astronomical Observatory National Astronomical ObservatoriesChinese Academy of SciencesUrumqi 830000China

We analyze the frequencies of three known roAp stars,TIC 96315731,TIC 72392575,and TIC 318007796,using the light curves from the Transiting Exoplanet Survey *** TIC 96315731,the rotational and pulsational frequencies are 0.1498360 day^(-1)and 165.2609 day^(-1),*** the case of TIC 72392575,the rotational frequency is 0.25551 day^(-1).We detect a quintuplet of pulsation frequencies with a center frequency of135.9233 day^(-1),along with two signals within the second pair of rotational sidelobes of the quintuplet separated by the rotation *** two signals may correspond to the frequencies of a dipole *** TIC318007796,the rotational and pulsational frequencies are 0.2475021 day^(-1),192.73995 day^(-1),and196.33065 day^(-1),*** on the oblique pulsator model,we cal.ulate the rotation inclination(i)and magnetic obliquity angle(b)for the stars,which provide the geometry of the pulsation *** the phases of the frequency quintuplets,the pulsation amplitude and phase modulation curves,and the results of spherical harmonic decomposition,we conclude that the pulsation modes of frequency quintuplets in TIC96315731,TIC 72392575,and TIC 318007796 correspond to distorted dipole mode,distorted quadrupole mode,and distorted dipole mode,respectively.

关键词： asteroseismology-techniques photometric-stars oscillations(including pulsations)-stars chemically peculiar

The Impact of Nova Outbursts on the Chemical Abundance of the Interstellar Medium

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Research in Astronomy and Astrophysics 2024年第10期24卷 116-129页

作者： Guoli He Chunhua Zhu Guoliang lü lin li Sufen Guo Helei l.u Jun Gao School of Physical Science and Technology Xinjiang UniversityUrumqi 830017China Xinjiang Astronomical Observatory Chinese Academy of SciencesUrumqi 830011China

Nova outbursts are the results of thermonuclear runaways,which occur when sufficient material accretes on the surfaces of white dwarfs(WDs).using the MESA code,we construct a detailed grid for carbon-oxygen and oxygen-neon-magnesium *** employing population synthesis methods,we conduct a statistical analysis of the distribution of novae in the Milky *** our models,on average,a typical nova system may undergo about8000 eruptions and the Galactic nova rate is~130 yr^(-1).The C,N,and O elements in nova ejecta are strongly affected by the mixing degree between WD core and accreted *** results show that the average value of^(12)C/^(13)C in nova ejecta is about an order of magnitude lower than that on the surface of a red giant,that for^(16)O/^(17)O is about 5 times lower,and that for^(14)N/^(15)N is about 1.5 times *** annual yields of^(13)C,^(15)N,and^(17)O from nova ejection are larger than those from AGB *** indicates that compared to a red giant,nova eruptions are a more important source of the odd-numbered nuclear elements of^(13)C,^(15)N,and^(17)O in the Galactic interstellar medium.

关键词： ISM:abundances (stars:)novae cataclysmic variables (stars:)white dwarfs

Simulation of rainfall-runoff and watershed convergence process in the upper reaches of Heihe River Basin,July 2002

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Science China Earth Sciences 2004年第Z1期47卷 1-8页

作者： GAO Yanhong l.u) Shihua CHENG Guodong Cold and Arid Regions Environmental and Engineering Research Institute Chinese Academy of Sciences Lanzhou 730000 China Cold and Arid Regions Environmental and Engineering Research Institute Chinese Academy of Sciences Lanzhou 730000 China Cold and Arid Regions Environmental and Engineering Research Institute Chinese Academy of Sciences Lanzhou 730000 China

The watershed flow concentration scheme in the distributed hydrology-soil- vegetation model (DHSVM) is coupled with the mesoscale atmospheric model MM5 version 3.5, in which the Oregen States university land surface model (OSulSM) was involved. The flood event which happened in July 2002 in the upper reaches of Heihe river basin is simulated and the surface flow convergence process is shown with this coupled model. It has been concluded that times water head reaches each place of the basin are different. Water amount at each point is split-flow proportionally as the drops in elevation between it and neighbor points. large part of the water amount pass away in greater slope direction and small part pass away in smaller slope *** of the slope convergence makes the atmospheric model redistributes the surface water laterally.

关键词： distributed hydrology-soil-vegetation model, mesoscale atmospheric model, watershed flow concentration process.

RATIONAl GENERAl SOluTIONS OF HIGHER ORDER AlGEBRAIC ODES

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Journal of Systems Science & Complexity 2013年第2期26卷 261-280页

作者： HuANG Yanli NG l X Chu WINKlER Franz School of Computer Science and Software Engineering Tianjin Polytechnic University Research Institute for Symbolic Computation(RISC) Johannes Kepler University Department of Mathematics Quy Nhon University

This paper generalizes the method of Ng6 and Winkler （2010, 2011） for finding rational general solutions of a first order non-autonomous algebraic ordinary differential equation （AODE） to the case of a higher order AODE, provided a proper parametrization of its solution hypersurface. The authors reduce the problem of finding the rational general solution of a higher order AODE to finding the rational general solution of an associated system. The rational general solutions of the original AODE and its associated system are in computable 1-1 correspondence. The authors give necessary and sufficient conditions for the associated system to have a rational solution based on proper reparametrization of invariant algebraic space curves. The authors also relate invariant space curves to first integrals and characterize rationally solvable systems by rational first integrals.

关键词： Algebraic ODE associated system invariant algebraic space curve rational first integral rational general solution.

Chitin-glucan improves important pathophysiological features of irritable bowel syndrome

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World Journal of Gastroenterology 2024年第16期30卷 2258-2271页

作者： Caroline Valibouze Caroline Dubuquoy Philippe Chavatte Michaël Genin Veronique Maquet Salvatore Modica Pierre Desreumaux Christel Rousseaux Department of Digestive Surgery and Transplantation Lille UniversityLille 59037France Intestinal Biotech Development Facultéde MédicineLille 59045France u1286-INFINITE-Institute for Translational Research in Inflammation Universitéde LilleLille 59000France ulR 2694-METRICS Évaluation des Technologies de santéet des Pratiques MédicalesUniversity of LilleLille 59000France KitoZyme SA Institution SociétéAnonymeZone 2Parc des Hauts SartsRue de MilmortHerstal 4040Belgium Hepato-Gastroenterology Department Lille University HospitalLille 59037France

BACKGROuND Irritable bowel syndrome(IBS)is one of the most frequent and debilitating conditions leading to gastroenterological ***,recommended treatments remain limited,yielding only limited therapeutic ***-glucan(CG)is a novel dietary prebiotic classically used in humans at a dosage of 1.5-3.0 g/d and is considered a safe food ingredient by the European Food Safety *** provide an alternative approach to managing patients with IBS,we performed preclinical molecular,cel.ular,and animal studies to evaluate the role of chitin-glucan in the main pathophysiological mechanisms involved in *** To evaluate the roles of CG in visceral analgesia,intestinal inflammation,barrier function,and to develop computational molecular *** Visceral pain was recorded through colorectal distension(CRD)in a model of long-lasting colon hypersensitivity induced by an intra-rectal administration of TNBS[15 milligrams(mg)/kilogram(kg)]in 33 Sprague-Dawley *** pressure was regularly assessed during the 9 wk-experiment(weeks 0,3,5,and 7)in animals receiving CG(n=14)at a human equivalent dose(HED)of 1.5 g/d or 3.0 g/d and compared to negative control(tap water,n=11)and positive control(phloroglucinol at 1.5 g/d HED,n=8)*** anti-inflammatory effect of CG was evaluated using clinical and histological scores in 30 C57bl6 male mice with colitis induced by dextran sodium sulfate(DSS)administered in their drinking water during 14 ***-29 cells under basal conditions and after stimulation with lipopolysaccharide(lPS)were treated with CG to evaluate changes in pathways related to analgesia μ-opioid receptor(MOR),cannabinoid receptor 2(CB2),peroxisome proliferator-activated receptor alpha,inflammation[interl.ukin(Il)-10,Il-1b,and Il-8]and barrier function[mucin 2-5AC,cl.udin-2,zonula occludens(ZO)-1,ZO-2]using the real-time PCR *** modelling of CG,lPS,lipoteichoic acid(lTA),and phospholipomannan(PlM)was developed,and the abili

关键词： Chitin-glucan Irritable bowel syndrome Abdominal pain Inflammation Intestinal barrier Molecular modelling Microbial cell walls chelation

Development of a new method for analyzing free aluminum ions(Al^(3+)) in seafood using HPlC-ICP-MS

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Chinese Science Bulletin 2013年第35期58卷 4437-4442页

作者： SHANG derong ZHAO YanFang ZHAI YuXiu NING JinSong DING HaiYan SHENG XiaoFeng Yellow Sea Fishery Research Institute Chinese Academy of Fishery Sciences

This paper presents a novel method for simultaneous online examination of free aluminum ions(Al3+)in seafood,using solidphase extraction and high-performance liquid chromatography online with inductively coupled plasma mass spectrometry(SPEHPlC-ICP-MS),without post-column *** optimum conditions for chromatographic separation of Al3+were achieved using an IonPac CS5A analytical column with an IonPac CG5A guard *** mobile phase consisted of 0.040 mol/l liOH,0.0060 mol/l 2,6-pyridinedicarboxylic acid,and 0.090 mol/l CH3COOH(pH 4.7).The free Al3+ions in seafood were extracted by shaking with the mobile phase at 70°C for 2 *** was conducted using an Oasis MCX,3cc/60 mg,30μm column,which was activated and equilibrated with 2 ml of methanol and 4 ml of deionized water before ***(0.075 mol/l,2 ml)was used to wash inorganic Al from the SPE *** standard recoveries of Al3+were all above 89%and the relative standard deviations were all below 5%.The proposed method was successfully used for the examination of Al3+in seafood samples,and the results were similar to those obtained using the static equilibrium method.

关键词：铝离子游离海鲜电感耦合等离子体质谱法 IonPac 高效液相色谱相对标准偏差固相萃取