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On one-sided torsion pair

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Science China Mathematics 2007年第1期50卷 13-26页

作者： Ya-nan lin lin XIN Department of Mathematics Xiamen UniversityXiamen 361005China Department of Mathematics Fujian Normal UniversityPuzhou 350007China

Motivated by the concept of a torsion pair in a pre-triangulated category induced by Beligiannis and Reiten, the notion of a left (right) torsion pair in the left (right) triangulated category is introduced and investigated. We provide new connections between different aspects of torsion pairs in one-sided triangulated categories, pre-triangulated categories, stable categories and derived categories.

关键词： triangulated category triangle torsion pair stable category 18E30 18E40 18E05

Two-Dimensional Fin Efficiency of Plate Fin-Tube Heat Exchangers Under Partially and Fully Wet Conditions

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Journal of Thermal Science 2002年第3期11卷 249-254页

作者： Jiin-Yuh Jang Chien-nan lin Natl Cheng Kung Univ Dept Mech Engn Tainan 70101 Taiwan

This paper presents the two-dimensional analysis for the efficiency of continuous plate fin-tube heat exchangers in staggered and in-lined arrangements under the dry, partially wet, and fully wet conditions for different heat transfer coefficient (h = 20 W/m2K to h = 80 W/m2K) and air relative humidity over the full range from φ= 0 % to φ= 100%. It is shown that the fin efficiencies of the staggered arrangement are higher than those for the in-lined arrangement, and the fully wet fin efficiency is 10~20% lower than that for a dry fin. The conventional 1-D sector method underestimates the fin efficiency up to 4 % as compared to the 2-D analysis.

关键词： fin efficiency plate fin-tube partially and fully wet.

Effect of the lead deposition on the performance of the negative electrode in an aqueous lead-carbon hybrid capacitor

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Journal of Energy Chemistry 2021年第4期30卷 509-516页

作者： Jinpeng Bao nan lin Haibo lin Jiaxiang Guo Hongyu Gao Weiqi Gao State Key Laboratory of Inorganic Synthesis and Preparative Chemistry Jilin UniversityChangchun 130012JilinChina Institute of Energy and Process Systems Engineering Braunschweig University of TechnologyBraunschweigGermany Zhuhai College of Jilin University Zhuhai 519041GuangdongChina

Lead-carbon hybrid capacitors are the electrochemical devices between supercapacitors and lead-acid batteries,with low prices,stability in high and low temperature,good security and broad application *** paper introduces an electrodeposition behavior of Pb^(2+)on the negative electrode,which can improve the cycle life of the lead-carbon hybrid *** the charging process,lead ions in the electrolyte can diffuse from the positive electrode of the lead-carbon hybrid capacitor into the negative *** charging at a low current density,the lead ions around the negative electrode can be reduced to lead,and it is then quickly converted to lead sulfate *** the increase of the number of cycles,the final result is *** can reduce the specific surface area of the electric double layer,thereby reducing the capacitance performance of the carbon *** a result,it reduces the charge-discharge efficiency of the lead-carbon hybrid *** service life of lead-carbon hybrid capacitor is significantly improved by the inhibition of lead deposition by anion exchange *** capacity retention rate at 5 A/g is improved from 84%after 1000 cycles to 95%after 10,000 *** discovery of lead deposition in the negative electrode is conducive to improving the performance of long-life lead-carbon hybrid capacitors.

关键词： Lead-carbon hybrid capacitor Negative electrode Electrodeposition Cycle life

Loss of human epidermal receptor-2 in human epidermal receptor-2+breast cancer after neoadjuvant treatment:A case report

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World Journal of Clinical Cases 2022年第17期10卷 5923-5928页

作者： Jing Yu nan-lin Li Department of Thyroid Breast and Vascular SurgeryXijing HospitalAir Force Medical UniversityXi’an 710032Shaanxi ProvinceChina

BACKGROUND Human epidermal receptor-2(HER-2)expression has been reported to be discordant between primary tumor and metastatic *** SUMMARY We presented a case diagnosed with the HER-2+breast cancer patient who exhibited changes in the expression of HER-2 receptors on tumour samples from surgical specimens obtained after neoadjuvant treatment(NAT)compared with initial *** patient underwent a HER-2-targeted therapy consequently,in spite of HER+gene *** the surgery,the patient subsequently underwent endocrine therapy and *** Changes in HER-2 expression after NAT should be retested by physicians and pathologists before systemic treatment instead of avoiding further HER-2-targeted therapy,and we will perform immunohistochemical multiple-spot biopsy analyses of other important clinical issues to better define prognosis and tailor subsequent adjuvant therapy.

关键词： Human epidermal receptor-2+breast cancer Human epidermal receptor-2 loss Neoadjuvant treatment Case report

High temperature oxidation of chromium with nanometric ceria sol-gel coating

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Chinese Chemical Letters 2008年第12期19卷 1504-1508页

作者： Hui Ming Jin lin nan Zhang College of Mechanical Engineering Yangzhou University Yangzhou 225009 China College of Environmental Science and Engineering Peking University Beijing 100010 China

Isothermal oxidation behavior of chromium with and without nanometric sol-gel CeO2 coating is studied at 1000℃ in air. Scanning electron microscopy （SEM） and transmission electron microscopy （TEM） are used to examine the surface morphology and microstructure of their oxide films. It is found that ceria coating greatly improves the anti-oxidation property of chromium. Laser Raman spectrometer and X-ray diffraction spectrometer （XRD） are also used to study the stress level in oxide films formed on ceria-coated and ceria-free Cr. The difference in oxidation behavior is mainly attributed to the fact that ceria greatly reduces the growth speed and grain size of Cr2O3 film, and this fine grain-sized Cr2O3 film probably has better high temperature plasticity, i.e. oxide film can relieve parts of compressive stress by means of creeping. XRD and Raman testing results both show the stress declination due to nano-CeO2 application, and their deviation is analyzed conceming to the rare earth effect.

关键词： nano-materials Sol-gel Stress Ceria Oxidation

Electrochemical conversion of furfural to furoic acid:a more stable,efficient and energy-saving system

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Science China Chemistry 2022年第12期65卷 2576-2587页

作者： Xinxin Li linchuan Cong Haibo lin Fangbing Liu Fuyu Han nan lin State Key Laboratory of Inorganic Synthesis and Preparative Chemistry Jilin UniversityChangchun130012China

The paired electrolytic system is constructed by combining the valuable organic electro-oxidation and electro-reduction reactions,which can replace the ineffective water splitting *** reducing the energy consumption of the electrolytic cell,the value-added electrolysis is *** indirect electrolysis method greatly reduces the dependence of the organic electrolysis reaction on electrode potential by introducing the redox mediators,which solves the problem on the matching of anode and cathode current under potentiostatic ***,we report a more stable,efficient and energy-saving linear paired electrochemical synthesis system that can simultaneously convert furfural to furoic acid at both the anode and cathode at higher current *** three-dimensional networked PbO_(2)is used as the anode and the catalytic amount of 2,2,6,6-tetramethyl-1-piperidinyloxy(TEMPO)is used as the mediator to realize the efficient conversion of furfural to furoic acid in a wide potential *** cathode catalyzes two-electron oxygen reduction to hydrogen peroxide using Pb/RHPC gas-diffusion electrode,which mediates the oxidation of furfural to furoic acid *** potentiostatic electrolysis,the selectivity of the furoic acid in the cathode and anode is 33.2%and 99.3%,respectively,and the total electron efficiency is 127.1%.The properties of the cathode and anode remain stable after the long-time electrolysis in a flow *** choosing a stable anode with high oxygen evolution overpotential and a gas-diffusion cathode with high hydrogen evolution overpotential,the electrolytic cell can be operated efficiently and stably by introducing reasonable mediated *** two half-reactions have good compatibility during the electrolysis process,saving energy consumption by about 12.3%,for certain industrial application prospects.

关键词： furfural furoic acid paired electrolytic system indirect electrosynthesis

On Connected Components of Skew Group Algebras

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Acta Mathematica Sinica,English Series 2023年第5期39卷 799-813页

作者： Jian Min CHEN Qiang DONG Ya nan lin School of Mathematical Sciences Xiamen UniversityXiamen 361005P.R.China

Let A be a basic connected finite dimensional associative algebra over an algebraically closed field k and G be a cyclic *** is a quiver QGwith relationsρG such that the skew group algebras A[G]is Morita equivalent to the quotient algebra of path algebra kQGmodulo ideal(ρG).Generally,the quiver QGis not *** this paper we develop a method to determine the number of connect components of ***,we introduce the notion of weight for underlying quiver of A such that A is G-graded and determine the connect components of smash product A#kG*.

关键词： Smash product skew group algebra n-translation algebra path algebra connected component

Probing the anisotropic distribution of baryon matter in the Universe using fast radio bursts

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Chinese Physics C 2021年第12期45卷 175-183页

作者： Hai-nan lin Yu Sang Department of Physics Chongqing UniversityChongqing 401331China Center for Gravitation and Cosmology College of Physical Science and TechnologyYangzhou UniversityYangzhou 225009China

We propose that fast radio bursts(FRBs)can be used as probes to constrain the possible anisotropic distribution of baryon matter in the *** Carlo simulations show that 400(800)FRBs are sufficient to detect the anisotropy at a 95%(99%)confidence level if the dipole amplitude has an order of magnitude of ***,more FRBs are required to tightly constrain the dipole *** 1000 FRBs are insufficient to constrain the dipole direction within the angular uncertainty △θ<40°at a 95%confidence *** uncertainty on the dispersion measure of a host galaxy does not significantly affect the ***,if the dipole amplitude is in the region of 0.001,1000 FRBs are not enough to correctly detect the anisotropic signal.

关键词： radio continuum:transients cosmological parameters large-scale structure of Universe

Distribution of per-and polyfluoroalkyl substances in blood,serum,and urine of patients with liver cancer and associations with liver function biomarkers

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Journal of Environmental Sciences 2024年第5期139卷 418-427页

作者： Cao Dai lin Peng Yanjie Li Zhendong Li Da Chen Fei Wang nan lin Department of Hepatobiliary Surgery The Third Affiliated Hospital of Sun Yat-sen UniversityGuangzhou 510630China School of Environment Guangdong Key Laboratory of Environmental Pollution and HealthJinan UniversityGuangzhou 510632China State Key Laboratory of Environmental and Biological Analysis Department of ChemistryHong Kong Baptist UniversityHong Kong 999077China South China Institute of Environmental Sciences MEEGuangzhou 510655China

Studies have shown that per-and polyfluoroalkyl substances(PFASs)may be hepatotoxic in animals or ***,data on clinical epidemiology are very *** this study,21PFASs were determined in patients with liver diseases,with the highest median concentrations detected in the serum sample(26.7 ng/mL),followed by blood(10.7 ng/mL)and urine(5.02 ng/mL).Higher total PFAS concentrations were found in hepatocellular carcinoma(HCC)patients compared to non-HCC patients,with significant discrepancies in serum and blood ***,significant correlations were also found among PFAS concentrations and age,gender,body mass index(BMI),and liver function biomarkers *** example,PFAS concentrations are significantly higher in males than in females;Several serum PFASs concentrations increase with age and BMI,while the serum perfluorohexane sulfonic acid(PFHxS)concentrations are negatively correlated with *** addition,multiple regression models adjusted for age,gender and BMI found that increased serum perfluorobutane sulfonic acid(PFBS),perfluoroheptane sulfonic acid(PFHpS)and perfluorohexylphosphonic acid(PFHxPA)conentrations are correlated with elevated alkaline phosphatase(ALP),aspartate aminotransferase(AST),and alpha-fetoprotein(AFP)(plinical hepatotoxicity of PFAS.

关键词： Per-and polyfluoroalkyl substances(PFASs) Liver cancer Serum Blood Urine Liver function biomarkers