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Neuroscience Bulletin 2024年第4期40卷 533-538页

作者： Yusheng Jia Xuanqi Qiao Jin Zhao hainan Li Shanlian Hu Min Hu department of Health Economics School of Public HealthFudan UniversityShanghai200032China National Health Commission Key laboratory of Health Technology Assessment Fudan UniversityShanghai200032China

DearEditors,Multiple sclerosis(MS)is a chronic,autoimmune neurological disorder characterized by inflammatory demyelination of the central nervous system;it is associated with reduced mobility,cognitive impairment,and numerous comorbidities[1].Global MS incidence(2.1 per 100,000 person-years)and prevalence(30.1 per 100,000)have increased in recent years,and its prevalence is notably higher in Western countries,ranging from~30 to 200 cases per 100,000[2].In china,recent epidemiological research has shown that the crude prevalence was 2.44 per 100,000 in 2016[3],and the age-and sex-adjusted incidence was 0.235 per 100,000 person-years[4].Despite the relatively low prevalence compared with the global average,china has extensively addressed the well-being of over 30,000 MS patients,enrolling MS in china's First National List of Rare Diseases in 2018.

关键词： prevalence impairment autoimmune

Application of CRISPR/Cas12i.3 for targeted mutagenesis in broomcorn millet(Panicum miliaceum L.)

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Journal of Integrative Plant Biology 2024年第8期66卷 1544-1547页

作者： Yuhe Bai Shengnan Liu Yan Bai Zhisong Xu hainan Zhao Haiming Zhao Jinsheng Lai Ya Liu Weibin Song State Key laboratory of Maize Bio-breeding Key Laboratory of Genome Editing Research and ApplicationMinistry of Agriculture and Rural AffairsDepartment of Plant Genetics and BreedingNational Maize Improvement CenterCollege of Agronomy and BiotechnologyChina Agricultural UniversityBeijing 100193China National Agricultural Technology Extension&Service Center Beijing 100125China Beijing Key laboratory of Maize DNA Fingerprinting and Molecular Breeding Beijing Academy of Agriculture and Forestry SciencesBeijing 100097China

As the global human population continues to grow and is predicted to reach 10 billion by 2050,the demand for food volume and quality raises a tremendous challenge(OECD/FAO,2017).The worldwide arable land area is decre... 详细信息

关键词： arable continue raise

On mathematical arbitrariness of some papers on the potential homologous linear rule investigation

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Chinese Science Bulletin 2000年第23期45卷 2203-2208页

作者： SUN Yukundepartment of Chemistry, hainan Teachers college, haikou 571158, china department of Chemistry Hainan Teachers College Haikou China

The history of homologous linear rule investigation is reviewed simply. The author puts forward a problem worth paying attention to in the recent potential homologous linear rule investigation, especially some mistakes made in these investigations on mathematical foundations. The author also exposes the mathematical arbitrariness of some papers on their potential homologous linear rule investigation.

关键词： homologous linear rule investigation conjugated systems multiring aromatic hydrocarbon potentials.

A characterization for a graphic sequence to be potentially C_r-graphic

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Science china Mathematics 2010年第11期53卷 2893-2905页

作者： YIN JianHua department of Mathematics, college of Information Science and Technology, hainan University, haikou 570228, china 1. department of Mathematics College of Information Science and Technology Hainan University Haikou 570228 China

Let r 3, n r and π = (d1, d2, . . . , dn) be a graphic sequence. If there exists a simple graph G on n vertices having degree sequence π such that G contains Cr (a cycle of length r) as a subgraph, then π is said to be potentially Cr-graphic. Li and Yin (2004) posed the following problem: characterize π = (d1, d2, . . . , dn) such that π is potentially Cr-graphic for r 3 and n r. Rao and Rao (1972) and Kundu (1973) answered this problem for the case of n = r. In this paper, this problem is solved completely.

关键词： graph cycle degree sequence

The frequencies of high frequency quasi-periodic oscillations in two different frames in black hole LMXBs

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Research in Astronomy and Astrophysics 2011年第11期11卷 1327-1335页

作者： Chang-Sheng Shi college of Material Science and Chemical Engineering,hainan University,hainan 570228,china Key laboratory of Modern Astronomy and Astrophysics,Nanjing University,Nanjing 210093,china college of Material Science and Chemical Engineering Hainan University Hainan 570228 China Key laboratory of Modern Astronomy and Astrophysics Nanjing University Nanjing 210093 China

We discuss the modes of the Alfvén waves in the accretion disk with a toroidal magnetic field in black hole low mass X-ray binaries in a rotating frame. By solving the perturbed general relativistic magnetohydrodynamic equations in the rotating frame, we find two stable modes of the Alfvén wave which are the same as those in the fiducial observer frame. This gives a feasible way to transform between the two different frames, which validates the possible Alfvén wave modes in the accreting celestial bodies with a toroidal magnetic field.

关键词： accretion accretion disks-magnetohydrodynamics-relativity

A local spin evaluation into the active site models of [2Fe2S] ferrodoxin [Fe_2S_2(SR)_4]^(2-) (R=-H, -CH_3)

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Science china Chemistry 2007年第3期50卷 327-334页

作者： WEI JiChong1,2, WANG Yan3 & JU GuanZhi2,3 1 department of Chemistry, hainan Normal University, haikou 571158, china 2 State Key laboratory of Theoretical and Computational Chemistry, Jilin University, Changchun 130023, china 3 department of Chemistry, Nanjing University, Nanjing 210093, china 1. department of Chemistry Hainan Normal University Haikou 571158 China 2. State Key laboratory of Theoretical and Computational Chemistry Jilin University Changchun 130023 China 3. department of Chemistry Nanjing University Nanjing 210093 China

To test the feasibility of local spin theory of Davidson and Clark for ferrodoxin clusters, the models [Fe2S2(SR)4]2- (R=-H, -CH3) are chosen for evaluation. This purpose is realized by calculating the local spin expectation values , , and mA and discussing the connection between these expected values and the Heisenberg spin model (HSM) and the Noodleman broken-symmetry approach. In practical calculation, the spin-unrestricted Hartree-Fock (UHF) and spin-polarized density functional theory (DFT) are used and the calculational qualities of these two methods are also discussed. In addition, the theoretical magnetic coupling constants JAB of these models are calculated by various computational schemes for comparison with both theoretical and experimental results previously reported.

关键词： local spin iron-sulfur protein model density function theory magnetic coupling constant

Investigation of Family Factors of Adolescent Drug Taking

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海外英语 2010年第4X期 222-224页

作者： LIU Yu-mei(department of Humanities and Social Sciences,hainan medical college,haikou 571101,china) department of Humanities and Social Sciences Hainan Medical CollegeHaikou 571101China

Objective: Discuss impacts of family environment over hainan province adolescent drug taking ***: Adopt "Investigation Questionnaire of Family Environment of Drug Abuse Adolescent in hainan Province" that compiled by self and "Family Environment Scale(FES-CV-Ⅲ)" for research *** carry out questionnaire investigation to the 352 drug taking adolescents,who come from "The First Reeducation Through Labor Institute in hainan Province","The Second Reeducation Through Labor Institute in hainan Province" and "The Center of Spirit Drug Treated in hainan Province",then give the data analysis and correlation analysis of the ***: The Cohesion、Intellectual-Cultural orientation、Active-Recreational orientation、Organization、Expressiveness、Independence and Achievement Orientation scores of the drug taking adolescent families in hainan province were significantly lower than normal samples in china,but the Moral-Religious Emphasis、Conflict and Control scores were significantly higher than the normal ***: The drug taking adolescent not only lack of well-educated families,but also has not been a good school education;most of their families belong to the low social class;adverse family environment is an important reason for drug abuse by adolescent.

关键词： family factor adolescent drug taking investigation

Preparation of CaS:Eu^(2+) Phosphor by Microwave Heating Method and its Luminescence

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Chinese Chemical Letters 2000年第9期11卷 843-846页

作者： Peng Jun LIU Ying Liang LIU department of Chemistry, Jinan University, Guangzhou 510632 department of Chemistry, hainan Normal college, haikou 571158 Jinan Univ Dept Chem Guangzhou 510632 Peoples R China hainan Normal Coll Dept Chem Haikou 571158 Peoples R China

This is the first report of using the microwave heating technique to synthesize calcium sulphide activated by europium whose structure is determined as the face-centered cubic by conventional X-ray powder diffraction method. The phosphor has maximum excitation peaks located at 280 urn and 560 urn and the maximum emission of the phosphor is 630 nm. When the concentration of Eu^(2+) in CaS increases from I .0 × 10^(-5) to l.0 × 10^(-2) mole per mole host, the body colour of the calcium sulphide activated with europium changes from white, through light-red to pink to deep-red. The phosphor obtains the longest afterglow at the concentration of 0.1% Eu^(2+)doped and is a kind of good material excited by sunlight.

关键词： Microwave radiation heating calcium sulphide europium luminescence.

Predicting neutron star spins from twin kHz QPOs

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Science china(Physics,Mechanics & Astronomy) 2010年第S1期53卷 247-248页

作者： SHI ChangSheng department of Astronomy,Nanjing University,Nanjing 210093,china college of Material Science and Chemical Engineering,hainan University,hainan 570228,china 1. department of Astronomy Nanjing University Nanjing 210093 China

We briefly review the proposed relations between the frequencies of twin kilohertz quasi-periodic oscillations(kHz QPOs) and the spin frequencies in neutron star low-mass X-ray binaries(NSLMXBs).To test the validity of the proposed models,we estimate the spin frequencies under these theoretical relations and compare them with the measured *** seems that magnetohydrodynamic(MHD) oscillations are more promising to account for the kHz QPOs.

关键词： win kHz QPOs spin neutron stars LMXBs