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Search for correlations between host properties and DMhost of fast radio bursts:constraints on the baryon mass fraction in IGM

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Chinese Physics C 2022年第7期46卷 201-211页

作者： Hai-nan lin Xin Li Li Tang Department of Physics Chongqing UniversityChongqing 401331China Department of Math and Physies Mianyang Normal University Mianyang 621000China

The application of fast radio bursts(FRBs)as probes for investigating astrophysics and cosmology requires proper modelling of the dispersion measures of the Milky Way(DM_(MW))and host galaxy(DM_(host)).DM_(MW)can be estimated using the Milky Way electron models,such as the NE2001 model and YMW16 ***,DM_(host)is hard to model due to limited information on the local environment of the *** this study,using 17 well-localized FRBs,we search for possible correlations betweenDM_(host)and the properties of the host galaxies,such as the redshift,stellar mass,star-formation rate,age of galaxy,offset of the FRB site from the galactic center,and half-light *** find no strong correlation betweenDM_(host)and any of the host *** thatDM_(host)is a constant for all host galaxies,we constrain the fraction of the baryon mass in the intergalactic medium today to bef_(IGM,0)=0.78_(-0.19)^(+0.15).If we modelDM_(host)as a log-normal distribution,however,we obtain a larger value,f_(IGM,0)=0.83_(-0.17)^(+0.12).Based on the limited number of FRBs,no strong evidence for a redshift evolution off_(IGM)is found.

关键词： fast radio bursts intergalactic medium cosmological parameters

Strongly lensed gravitational waves as probes to test the cosmic distance duality relation

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Chinese Physics C 2021年第1期45卷 406-413页

作者： Hai-nan lin Xin Li Li Tang Department of Physics Chongqing UniversityChongqing 401331China Department of Math and Physics Mianyang Normal UniversityMianyang 621000China

The cosmic distance relation(DDR) associates the angular diameters distance(DA) and luminosity distance(DL) by a simple formula,i.e.,DL=(1+z)2 *** strongly lensed gravitational waves(GWs) provide a unique way to measure DA and DL simultaneously to the GW source,hence they can be used as probes to test *** this study,we investigated the use of strongly lensed GW events from the future Einstein Telescope to test *** assumed the possible deviation of DDR as(1+z)2 DA/DL=η(z),and considered two different parametrizations of η(z),namely,η1(z)=1+η0 z and η2(z)=1+η0 z/(1+z).Numerical simulations showed that,with about 100 strongly lensed GW events observed by ET,the parameter η0 was constrained at 1.3% and 3% levels for the first and second parametrizations,respectively.

关键词： gravitational waves gravitational lensing cosmology

Non-parametric reconstruction of dark energy and cosmic expansion from the Pantheon compilation of type Ia supernovae

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Chinese Physics C 2019年第7期43卷 103-111页

作者： Hai-nan lin Xin Li Li Tang Department of Physics Chongqing University

The equation of state(EoS) of dark energy plays an important role in the evolution of the universe and has attracted considerable interest in the recent years. With the progress in observational technique, a precise constraint on the EoS of dark energy can be obtained. In this study, we reconstruct the EoS of dark energy and cosmic expansion using Gaussian processes(GP) from the most up-to-date Pantheon compilation of type Ia supernovae(SNe Ia),which consists of 1048 finely calibrated SNe Ia. The reconstructed EoS of dark energy has a large uncertainty owing to its dependence on the second-order derivative of the construction. Adding the direct measurements of Hubble parameters H(z) as an additional constraint on the first-order derivative can partially reduce the uncertainty;however, it is still not sufficiently precise to distinguish between the evolving and the constant dark energy. Moreover, the results heavily rely on the prior of the Hubble constant H0. The H0 value inferred from SNe+ H(z) without prior is H0= 70.5 ± 0.5 km s^-1 Mpc^-1. Moreover, the matter density ΩM has a non-negligible effect on the reconstruction of dark energy. Therefore, more accurate determinations on H0 and ΩM are required to tightly constrain the EoS of dark energy.

关键词： cosmology dark energy type Ia supernovae

Characteristics of corneal dystrophies:a review from clinical,histological and genetic perspectives

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International Journal of Ophthalmology(English edition) 2016年第6期9卷 904-913页

作者： Ze-nan lin Jie Chen Hong-Ping Cui Department of Ophthalmology Shanghai East HospitalTongji University School of Medicine

Corneal dystrophy is a common type of hereditary corneal diseases. It includes many types, which have varied pathology, histology and clinical manifestations. Recently, the examination techniques of ophthalmology and gene sequencing advance greatly, which do benefit to our understanding of these diseases. However, many aspects remain still unknown. And due to the poor knowledge of these diseases, the results of the treatments are not satisfactory. The purpose of this review was to summarize the clinical, histological and genetic characteristics of different types of corneal dystrophies.

关键词： corneal dystrophy clinic histology genemutation

A novel method of supporting gold nanoparticles on MWCNTs: Synchrotron X-ray reduction

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China Particuology 2007年第3期5卷 237-241页

作者： Kuan-nan lin Tsung-Yeh Yang Hong-Ming lin Yeu-Kuang Hwu She-Huang Wu Chung-Kwei lin Department of Materials Engineering Tatung University Taipei 104 Taiwan China Institute of Physics Academia Sinica 128 Academia Road Nankang Taipei 115 Taiwan China Department of Materials Science and Engineering Feng Chia University 407 Taichung Taiwan China

Gold nanoparticles decorating the surface of multiwalled carbon nanotubes （MWCNTs） are prepared by photochemical reduction. The gold clusters form different interesting geometrical faceted shapes in accordance to time duration of synchrotron X-ray irradiation. The shape of nanogold could be spherical, rod-like, or triangular. Carbon nanotubes serve as optimal templates for the heterogeneous nucleation of gold nanocrystals. These nanocrystal structures are characterized by transmission electron microscope （TEM） and element analysis by energy dispersive spectroscopy （EDS）. 2007 Chinese Society of Particuology and Institute of Process Engineering,Chinese Academy of Sciences. Published by Elsevier B.V.

关键词： Gold MWCNT Heterogeneous nucleation Synchrotron X-ray irradiation

Microstructure and corrosion behavior of electroless deposited Ni-P/CeO_2 coating

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Chinese Chemical Letters 2008年第11期19卷 1367-1370页

作者： Hui Ming Jin Shi Hang Jiang lin nan Zhang College of Mechanical Engineering Yangzhou University Yangzhou 225009 China College of Environmental Science and Engineering Peking University Beijing 100015 China

Electroless Ni-P/nano-CeO2 composite coating was prepared in acidic condition, and its microstructure and corrosive property were compared with its CeO2-free counterpart. Scanning electronic microscopy （SEM） and X-ray diffraction （XRD） spectrometer were used to examine surface morphology and structure of the as-plated coating. Differential scanning calorimeter （DSC） and transmission electronic microscopy （TEM） were used to study the coating＇s phase change at high temperature. The coating＇s corrosive behavior in 3%NaCl ＋ 5%H2SO4 solution was also investigated. The results showed that Ni-P coating had partial amorphous structure mixed with nano-crystals, while the Ni-P/CeO2 coating had perfect amorphous structure. In high-temperature condition, Ni3P precipitation and Ni crystallization took place in both coatings but at different temperatures, while the Ni-P/CeO2 coating had sintered phase of NiCe2O4 spinels. The anti-corrosion property was better in the CeO2-containing coating, and this was due to its less liability to undergo local-cell corrosion than its CeO2-free counterpart. Ni-P/CeO2 coating＇s pure amorphous structure was the result of Ni＇s hindered crystal-typed deposition and P＇s promoted deposition.

关键词： Ni-P Ceria Electroless deposition Corrosion

Influence of pH value on microstructure and thermal stability of Ni-P electroless coating prepared in acidic condition

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Chinese Chemical Letters 2009年第7期20卷 845-848页

作者： Xiao Wei Zhou Hui Ming Jin lin nan Zhang College of Mechanical Engineering Yangzhou University Yangzhou 225009 China College of Environmental Science and Engineering Peking University Beijing 100023 China

Three kinds of Ni-P electroless coatings were prepared in nickel sulphate solution at different pH values of 4.5, 5.5 and 6.5 with the purpose of ascertaining the influence of pH value on microstructure, internal stress statue and thermal stability of the coatings. Laser curvature （LC） method was used to measure the residual stress level in the coatings. Scanning electronic microscopy （SEM） and transmission electronic microscopy with energy dispersive spectrum （TEM/EDS） were used to examine the surface morphology and internal phase structure of the coatings, respectively. Differential scanning calorimeter （DSC） was used to analyze the phase transformation and thermal stability of the coatings at high temperature. Results showed the NiP coating prepared at pH 5.5 with nanocrystal mixed in amorphous structure had the worst thermal stability. The relatively higher stability of Ni-P coatings prepared at pH 4.5 and 6.5 was ascribed to the lower tensile stress level and much finer grain size, respectively. Besides, inverse Hall-Petch effect of annealing strengthening might also contribute to the integrity of NiP coating prepared at pH 6.5. C 2009 Hui Ming Jin. Published by Elsevier B.V. on behalf of Chinese Chemical Society. All rights reserved.

关键词： Microstructure Stress Electroless Ni-P

The Optical Study of Single Crystalline Cs_(0.8)(Fe_(1.05)Se)_(2) with High Néel Temperature

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Chinese Physics Letters 2013年第7期30卷 210-212页

作者： YUAN Rui-Hua DONG Tao WANG nan-lin Laboratory of Condensed Matter Physics Institute of PhysicsChinese Academy of SciencesBeijing 100190

We report an optical spectroscopy study on an iron-selenide single crystal of insulating Cs_(0.8)(Fe_(1.05)Se)_(2) with relatively high Néel *** resistivity and magnetization measurements reveal a semiconductor behavior with TN=492 *** sample has been examined in the temperature range from 10 K up to 500 K by using infrared *** low frequency optical measurement implies an insulating response with a major absorption near 0.31 *** double-peak structure in the mid-infrared region and the low-frequency phonon modes support the presence of the blocked *** infrared measurement reveals no signature of SDW-type energy gap formation below the anti-ferromagnetic-order temperature.

关键词： temperature. measurement. signature

Emerging potential of ubiquitin-specific proteases and ubiquitinspecific proteases inhibitors in breast cancer treatment

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World Journal of Clinical Cases 2022年第32期10卷 11690-11701页

作者： Mei-ling Huang Guang-Tai Shen nan-lin Li Department of Thyroid Breast and Vascular SurgeryXijing HospitalThe Fourth Military Medical UniversityXi’an 710032Shaanxi ProvinceChina Department of Breast Surgery Xing'an League People's HospitalUlanhot 137400Inner Mongolia Autonomous RegionChina

Breast cancer is the most frequently diagnosed cancer in women,accounting for 30%of new diagnosing female *** evidence suggests that ubiquitin and ubiquitination played a role in a number of breast cancer etiology and progression *** the primary deubiquitinases in the family,ubiquitin-specific peptidases(USPs)are thought to represent potential therapeutic *** role of ubiquitin and ubiquitination in breast cancer,as well as the classification and involvement of USPs are discussed in this review,such as USP1,USP4,USP7,USP9X,USP14,USP18,USP20,USP22,USP25,USP37,and *** reported USPs inhibitors investigated in breast cancer were also summarized,along with the signaling pathways involved in the investigation and its study *** no USP inhibitor has yet been approved for clinical use,the biological efficacy indicated their potential in breast cancer *** the improvements in phenotypic discovery,we will know more about USPs and USPs inhibitors,developing more potent and selective clinical candidates for breast cancer.

关键词： Ubiquitin-specific proteases USPs inhibitors Breast cancer Review