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Determination of neutron-skin thickness using configurational information entropy

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Nuclear Science and Techniques 2022年第1期33卷 60-66页

作者： Chun-Wang Ma Yi-pu liu Hui-Ling Wei Jie pu Kai-Xuan Cheng Yu-Ting Wang School of Physics Henan Normal UniversityXinxiang 453007China Key Laboratory Optoelectronic Sensing Integrated Application of Henan Province Henan Normal UniversityXinxiang 453007China

Configurational information entropy(CIE)theory was employed to determine the neutron-skin thickness of neutron-rich calcium *** nuclear density distributions and fragment cross sections in 350 MeV/u ^(40-60)Ca+^(9)Be projectile fragmentation reactions were calculated using a modified statistical abrasion-ablation *** quantities were determined from the nuclear density,isotopic,mass,and charge *** linear correlations between the CIE determined using the isotopic,mass,and charge distributions and the neutron-skin thickness of the projectile nucleus show that CIE provides new methods to extract the neutron-skin thickness of neutron-rich nuclei.

关键词： Neutron-skin thickness Configurational information entropy Cross section distribution Projectile fragmentation

Genetic Variation in Resistance to Valsa canker is Related to Arbutin and Gallic Acid Content in Pyrus bretschneideri

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Horticultural Plant Journal 2018年第6期4卷 233-238页

作者： liu pu SHI Yuanyuan ZHU Liwu Key Laboratory of Pomology School of Horticulture Anhui Agricultural University

Pear Valsa canker is a fungal trunk disease caused by Valsa pyri. Phenolic compounds are ubiquitous in plants and usually contribute to plant resistance against biotic stress. To investigate the association between phenolic compounds and level of resistance to V. pyri, we quantified the contents of individual phenolic compounds in the cortex and phloem of stems from 8 cultivars of Pyrus bretschneideri. Significant variation in the levels of all compounds was found among the cultivars. Correlation analysis revealed an inverse correlation between levels of arbutin and gallic acid with the degree of canker resistance. This suggested that these phenolic compounds are beneficial to V. pyri infection. These data could be valuable for breeding cultivars of P. bretschneideri with greater resistance to V. pyri.

关键词： Pyrus bretschneideri phenolic compound resistance Valsa canker LC–MS

A Highly Selective Chemosensor for Cu^2＋ Based on a Diarylethene Linking an Aminoquinoline Unit

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Chinese Journal of Chemistry 2015年第11期33卷 1310-1316页

作者： Congcong Zhang Congbin Fan Shouzhi pu Gang liu Jiangxi Key Laboratory of Organic Chemistry Jiangxi Science and Technology Normal University Nanchang Jiangxi 330013 China

A new diarylethene derivative containing an aminoquinoline unit was synthesized and its structure was determined by single crystal X-ray diffraction analysis. Its properties such as photochromism, fluorescent switches and detection for metal ions were measured. The results indicated that the closed-ring of the diarylethene was highly selective toward Cu^2＋ with an obvious absorption decrease and color changes from blue to colorless, even in the presence of other metal ions. The binding constant for the closed isomer of this new diarylethene and Cu^2＋ was 2.0× 10^4 L·mol^-1 and the limit of detection for Cu^2＋ was calculated to be lower than that in drink water. Finally, a logic circuit was constructed by using the absorption intensity as the output signal with the inputs of the combina- tional stimuli of light and Cu^2＋.

关键词： diarylethene aminoquinoline fluorescence chemosensor Cu^2+ logic circuit

The relationship between insulin resistance/β-cell dysfunction and diabetic retinopathy in Chinese patients with type 2 diabetes mellitus： the Desheng Diabetic Eye Study

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International Journal of Ophthalmology(English edition) 2018年第3期11卷 493-500页

作者： Yun-Yun Li Xiu-Fen Yang Hong Gu Torkel Snellingen Xi-pu liu Ning-pu liu Beijing Tongren Eye Center Beijing Tongren Hospital Capital Medical University Beijing Ophthalmology and Visual Sciences Key Laboratory Beijing 100730 China Department of Ophthalmology Friendship Hospital Capital Medical University Beijing 100050 China Department of Ophthalmology Lihuili Hospital Ningbo 315040 Zhejiang Province China Sekwa Institute of Medicine Beijing 100035 China

AIM： To investigate the relationship between insulin resistance （IR）/β-cell dysfunction and diabetic retinopathy （DR） in Chinese patients with type 2 diabetes mellitus （T2DM）, and to explore further whether there were differences in the relationship among diabetic patients with higher and lower body mass index （BMI）. METHODS： Cross-sectional study. A total of 1466 subjects with T2DM were recruited in a local Desheng Community of urban Beijing from November 2009 to June 2012 for the cohort of Beijing Desheng Diabetic Eye Study. Standardized evaluation was carried out for each participant, including questionnaire, ocular and anthropometric examinations, and laboratory tests. Seven fields 30° color fundus photographs were used for DR grading according to the Early Treatment Diabetic Retinopathy Study protocols. Homeostatis Model Assessment （HOMA） method was employed for IR and β-cell function assessment. RESULTS： After excluding those participants who were treated with insulin （n=352） or had missing data of fasting insulin （n=96）, and further excluding those with poor quality of retinal photographs （n=10）, a total of 1008 subjects were included for the final analysis, 406 （40.3%） were men and 602 （59.7%） were women, age ranging fiom 34 to 86 （64.87±8.28）y. Any DR （levels 14 and above） was present in 278 （27.6%） subjects. After adjusting for possible covariates, the presence of any DR did not correlate with HOMA IR [odds ratio （OR） 1.51, 95% confidence interval （Cl） 0.87-2.61, P=0.14] or HOMA β-cell （OR 0.71, 95%CI 0.40-1.26, P=0.25）. After stratification by BMI, the presence of any DR was associated positively with HOMA IR （OR 2.46, 95%CI： 1.18-5.12, P=0.016）, and negatively with HOMA β-cell （OR 0.40, 95%CI： 0.19-0.87, P=0.021） in the group of patients with higher BMI （225 kg/m2）. In the group of patients with lower BMI （〈25 kg/m2）, the presence of any DR was not associated with HOMA IR （OR 1.00, 95%C1： 0.43-2.33, P=I.00） or HOMA β-cell （OR 1.41, 95%CI： 0.60-3.32, P=

关键词： type 2 diabetes mellitus diabetic retinopathy insulin resistance β-cell function body mass index

Meta- analysis of association between K469E polymorphism of the ICAM-1 gene and retinopathy in type 2 diabetes

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International Journal of Ophthalmology(English edition) 2015年第3期8卷 603-607页

作者： Wen-Ying Fan Ning-pu liu Beijing Tongren Eye Center Beijing Tongren HospitalBeijing Ophthalmology and Visual Sciences Key LaboratoryCapital Medical University

AIM: To collectively evaluate the association of intercellular adhesion molecule-1(ICAM-1) gene K469 E polymorphism(rs5498) with diabetic retinopathy(DR) in patients with type 2 diabetic mellitus(T2DM). METHODS: Overall review of available literatures relating K469 E polymorphism to the risk of DR was conducted on 4 electronic databases. Meta-analysis was performed by Stata 12.0 to calculate pooled odds ratios(ORs). Potential sources of heterogeneity and bias were ***: Seven studies with genotype frequency data including 1120 cases with DR and 956 diabetic controls free of DR were included. Meta-analysis did not show significant association of K469 E polymorphism with DR(P >0.05). A statistically significant association was detected between the K469 E polymorphism and proliferative DR(PDR) in Asians only in dominant model(GG+AG vs AA) with pooled OR of 0.729(95%CI: 0.564-0.942, P=0.016, P heterogeneity=0.143), however, this association was not detected in recessive model(AG +AA vs GG;OR=1.178, 95%CI: 0.898-1.545, P =0.236, P heterogeneity=0.248)or allelic model(G vs A; OR=0.769, 95% CI: 0.576-1.026,P =0.074, P heterogeneity=0.094). No publication bias was found by Funnel plot, Begg’s and Egger’s test. CONCLUSION: This research found no statistically significant association between ICAM-1 gene K469 E polymorphism and DR in patients with T2 DM, but showed significant association of the K469 E polymorphism with PDR in Asian diabetic patients only in dominant model. Further investigation would be required to consolidate the conclusion.

关键词： K469E polymorphism rs5498 intercellular adhesion molecule-1 diabetic retinopathy type 2 diabetes Meta-analysis

The Beijing Desheng Diabetic Eye Study:rationale,design,methodology and baseline data

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International Journal of Ophthalmology(English edition) 2018年第1期11卷 108-116页

作者： Yun-Yun Li Xiu-Fen Yang Hong Gu Xi-pu liu Torkel Snellingen Ning-pu liu Beijing Tongren Eye Center Beijing Tongren HospitalCapital Medical UniversityBeijing Ophthalmology and VisualSciences Key LaboratoryBeijing 100730China Department of Ophthalmology Friendship HospitalCapitalMedical UniversityBeijing 100050China Department of Ophthalmology Ningbo Medical TreatmentCenter Lihuili HospitalNingbo 315040Zhejiang ProvinceChina Sekwa Institute of Medicine Beijing 100035China

AIM： To present the rationale, design, methodology, and the baseline data of the Beijing Desheng Diabetic Eye Study（BDDES）, and to determine the prevalence of diabetic retinopathy（DR） and possible risk factors in patients with type 2 diabetes mellitus（T2DM） in an urban community of Beijing, ***： Community-based prospective cohort study of persons diagnosed with T2DM aged 30 y or older. The main variables of interest are the presence and progression of DR as determined by the standardized ETDRS grading of seven fields fundus photographs. The presence and severity of DR were analyzed for possible correlations to non-genetic and genetic ***： A total of 1438 participants with data available for analysis, the prevalence of any DR was 35.4%. The prevalence of mild non-proliferative diabetic retinopathy（NPDR）, moderate NPDR, severe NPDR, and proliferative diabetic retinopathy was 27.7%, 2.6%, 0.5% and 4.5%, respectively. By multiple logistic regression analysis, risk factors for the presence of any DR included male（P=0.031）, lower income level（P=0.011）, lower education background（P=0.022）, longer duration of diabetes（P=0.001）, younger age at diabetic onset（P=0.001）, higher systolic blood pressure（P=0.007）, higher glycosylated hemoglobin A1 c levels（P=0.001）, high albuminuria（P=0.03）, and use of insulin（P〈0.001）. For vision-threatening DR, four factors were significant： younger age at diabetic onset（P〈0.001）,higher systolic blood pressure（P=0.042）, high albuminuria（P〈0.001）, and use of insulin（P〈0.001）. CONCLUSION： The BDDES is the first large-scale ongoing cohort study of a Chinese urban population of persons with type 2 diabetes. Using standardized grading system comparable to large cohort studies from western populations, our baseline data shows that the prevalence of DR and major risk factors in this Chinese ethnic population are comparable to that found in the western population studies.

关键词： type 2 diabetes mellitus diabetic retinopathy risk factors cohort study

Parallel Evolutionary Modeling for Nonlinear Ordinary Differential Equations

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Wuhan University Journal of Natural Sciences 2001年第3期6卷 659-664页

作者： Kang Zhuo liu pu Kang Li-shan Computation Center State Key Lab. of Software Eng. Wuhan University Wuhan 430072 China

We introduce a new parallel evolutionary algorithm in modeling dynamic systems by nonlinear higher-order ordinary differential equations (NHODEs). The NHODEs models are much more universal than the traditional linear models. In order to accelerate the modeling process, we propose and realize a parallel evolutionary algorithm using distributed CORBA object on the heterogeneous networking. Some numerical experiments show that the new algorithm is feasible and efficient.

关键词： parallel evolutionary algorithm higher-order ordinary differential equation CORBA

Synthesis and Characterization of a Novel Soluble Diethoxy Phosphoryl Chitosan

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Chinese Journal of Chemistry 2012年第2期30卷 413-417页

作者： Ma,Li Li,Kerang Li,Limin liu,pu Department of Chemistry Zhengzhou UniversityZhengzhouHenan 450001China

A simple and efficient method for the preparation of a novel soluble chitosan derivative, diethoxy phosphoryl chitosan （PH-chitosan）, has been developed. Ph-chitosan was characterized by elemental analysis, FT-IR, NMR, ICP, XRD, TG and SEM, respectively. The chemical identity of PH-chitosan was determined by FT-IR and confirmed by NMR, and those results unequivocally demonstrated that diethoxy phosphoryl groups were grafted onto the amino and hydroxyl groups of chitosan. The results of XRD indicated that the crystalline structure of chitosan was destroyed due to the incorporation of diethoxy phosphoryl group resulting in loss of hydrogen bond. The analysis of TG demonstrated that PH-chitosan was less thermal stable than chitosan. This simple synthetic method provided a new and available approach to prepare a soluble high molecule weight chitosan derivative.

关键词： chitosan diethoxy phosphoryl chitosan synthesis characterization

Characteristics of DBD micro-discharge at different pressure and its effect on the performance of oxygen plasma reactor

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Plasma Science and Technology 2019年第5期21卷 5-13页

作者： Rui liu Zhe YU Huijuan CAO pu liu Zhitao ZHANG College of Science Dalian Maritime UniversityDalian 116026People's Republic of China Institute of Marine Engineering Dalian Maritime UniversityDalian 116026People's Republic of China

The oxygen plasma reactor based on dielectric barrier discharge principle can produce a high concentration of reactive oxygen species,which can cooperate with hydraulic cavitation gas-liquid mixer to realize the application of advanced oxidation technology in water *** this technology,the work pressure of the oxygen plasma reactor is decreased by the vacuum suction effect generated in the snap-back section of the gas-liquid mixed *** this paper,the characteristics of single micro-discharge at different pressures were investigated with the methods of discharge image,electrical characteristics and spectral diagnosis,in order to analyze the electrical characteristics and reactive oxygen species generation efficiency of oxygen plasma reactor at the pressure range from 60 kPa to 100 *** study indicated that,when the pressure decreases,the duty ratio of ionization in the discharge gap and number of electrons with high energy increases,leading to a rise in reactive oxygen species *** the oxygen reaches the maximum ionization,the concentration of reactive oxygen species is the ***,the discharge intensity continues to increase,producing more heat,which will decompose the ozone and lower the production of reactive oxygen *** oxygen plasma reactor has an optimum working pressure at different input powers,which makes the oxygen plasma reactor the most efficient in generating reactive oxygen species.

关键词： atmospheric pressure plasma reactor pressure active oxygen particle dielectric barrier discharge