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Paleoclimate data assimilation： Its motivation, progress and prospects

Science China Earth Sciences 2016年第9期59卷 1817-1826页

作者： fang miao LI Xin Cold and Arid Regions Environment and Engineering Research Chinese Academy of Sciences Lanzhou 730000 China University of Chinese Academy of Sciences Beijing 100049 China Center for Excellence in Tibetan Plateau Earth Sciences Chinese Academy of Sciences Beijing 100101 China

Reconstructing past climate is beneficial for researchers to understand the mechanism of past climate change, recognize the context of modern climate change and predict scenarios of future climate change. Paleoclimate data assimilation(PDA), which was first introduced in 2000, is a promising approach and a significant issue in the context of past climate research. PDA has the same theoretical basis as the traditional data assimilation(DA) employed in the fields of atmosphere science, ocean science and land surface science. The main aim of PDA is to optimally estimate past climate states that are both consistent with the climate signal recorded in proxy and the dynamic understanding of the climate system through combining the physical laws and dynamic mechanisms of climate systems represented by climate models with climate signals recorded in proxies(e.g., tree rings, ice cores). After investigating the research status and latest advances of PDA abroad, in this paper, the background, concept and methodology of PAD are briefly introduced. Several special aspects and the development history of PAD are systematically summarized. The theoretical basis and typical cases associated with three frequently-used PAD methods(e.g., nudging, particle filter and ensemble square root filter) are analyzed and demonstrated. Finally, some underlying problems in current studies and key prospects in future research related to PDA are proposed to provide valuable thoughts on and a scientific basis for PDA research.

关键词： Climate reconstruction Paleoclimate modeling Proxies Data assimilation

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Harmonizing models and observations: Data assimilation in Earth system science

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Science China Earth Sciences 2020年第8期63卷 1059-1068页

作者： Xin LI Feng LIU miao fang National Tibetan Plateau Data Center Institute of Tibetan Plateau ResearchChinese Academy of SciencesBeijing 100101China CAS Center for Excellence in Tibetan Plateau Earth Sciences Chinese Academy of SciencesBeijing 100101China Key Laboratory of Remote Sensing of Gansu Province Northwest Institute of Eco-Environment and ResourcesChinese Academy of SciencesLanzhou 730000China

Models and observations are two fundamental methodological approaches in Earth system science(ESS). They evolve collaboratively and enhance one another. However, neither of these two approaches is perfect, and they have incompatibilities due to their methodological differences. The emergence of data assimilation(DA) has enabled these two approaches to develop in conjunction and form a harmonic ESS methodology. As a result, DA has shown a fresh vitality and applicability in ESS. This paper reviews the application of DA in the main branches of ESS, traces the coordinated evolution of DA with the methodologies of rationalism and empiricism, analyzes the relationships of DA with estimation theory and cybernetics, summarizes the advances of DA in China, and presents an outlook on the challenges facing the development of a uniform DA for ESS. DA theories and methods will continue to evolve and provide an increasingly mature methodology for enhancing the understanding and prediction of Earth as a system.

关键词： Data assimilation Model Observation Earth system science Methodology Philosophy of science Synthesis

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Dynamic measurements of serum inhibin B and estradiol: a predictive evaluation of ovarian response to gonadotrophin stimulation in the early stage of IVF treatment

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Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2009年第1期10卷 35-45页

作者： Ming-fang miao He-feng HUANG Department of Reproductive Endocrinology Women's Hospital School of Medicine Zhejiang University Hangzhou 310006 China

Objective： We dynamically measured serum inhibin B and estradiol in the early stage of hormonal stimulation to predict the ovarian response in in vitro fertilization （IVF） treatment. Methods： A total of 57 patients （〈40 years of age） who underwent the first cycle of long protocol IVF or introcytoplasmic sperm injection （ICSI） treatment were included. Serum inhibin B, estradiol, follicle stimulating hormone （FSH） and luteinizing hormone （LH） levels were measured four times：（1） on Day 3 of the menstrual cycle （basal）; （2） on the day before the first administration ofgonadotrophin （Gn）（Day 0）; （3） on Day 1 of Gn therapy; and （4） on Day 5 of Gn therapy. Comparisons of these measurements with ovarian responses and pregnancy outcomes were made and analyzed statistically. Results：（1） On Day 1 and Day 5 of recombinant FSH （rFSH） stimulation, ovarian response, i.e., numbers of follicles, oocytes, fertilized oocytes, and embryos, had a positive correlation （rs=0.46-0.61, P 0.000） with raised inhibin B and estradiol concentrations, but a negative correlation （rs=-0.67--0.38, P=0.000 or P〈0.01） with total rFSH dose and total days ofrFSH stimulation. （2） No significant variation （P〉0.05） between the pregnant and non-pregnant groups on the basis of mean age or on all hormone concentrations at four times of the IVF cycle was observed. However, all the seven patients aged 〉35 years did not reach pregnancy. Conclusions：（1） Serum inhibin B and estradiol concentrations obtained shortly after Gn therapy may offer an accurate and early prediction of ovarian response; （2） Low levels of serum inhibin B and estradiol obtained shortly after Gn stimulation indicate the need for a longer period of Gn treatment and a higher daily dosage; （3） No obvious pregnancy difference among patients of age 〈35 years was found; however, IVF pregnancy outcome is significantly lower in women of age 〉35 years.

关键词： Inhibin B Estradiol Ovarian response In vitro fertilization (IVF) Pregnancy

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Painlev-Kuratowski Convergences of the Solution Sets to Perturbed Generalized Systems

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Acta Mathematicae Applicatae Sinica 2012年第2期28卷 361-370页

作者： Zhi-miao fang Sheng-jie LI College of Mathematics and Statistics Chongqing UniversityChongqing 4013031China

In this paper, we obtain the Painleve-Kuratowski Convergence of the efficient solution sets, the weak efficient solution sets and various proper efficient solution sets for the perturbed generalized system with a sequ... 详细信息

关键词： Painleve-Kuratowski convergence Camma-convergence continuous convergence perturbedgeneralized systems Scalarization

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Upper Semicontinuity of Parametric Lexicographic Vector Equilibrium Problems

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Acta Mathematicae Applicatae Sinica 2018年第4期34卷 856-862页

作者： Zhi-miao fang Sheng-jie LI Department of Basic Course Chongqing Police College Chongqing 401331 China College of Mathematics and Statistics Chongqing University Chongqing 401331 China

In this paper, lexicographic vector equilibrium problems are investigated. By using the idea of sequential process, the upper semicontinuity and closedness of the solution set map are established for a parametric lexi... 详细信息

关键词： lexicographic vector equilibrium problem upper semicontinuity closedness

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Direct Z-scheme CdFe_(2)O_(4)/g-C3N4 hybrid photocatalysts for highly efficient ceftiofur sodium photodegradation

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Journal of Materials Science & Technology 2020年第21期56卷 133-142页

作者： miao-miao fang Jun-Xia Shao Xiang-Gang Huang Jin-Yi Wang Wei Chen School of Pharmaceutical and Materials Engineering Taizhou UniversityTaizhou 318000China

A direct Z-scheme CdFe_(2)O_(4)/g-C3N4 hybrid systems with different weight ratios of CdFe2O4 nanoparticles were successfully designed and constructed for ceftiofur sodium *** as-obtained CdFe_(2)O_(4)/g-C_(3)N_(4) hybrid samples composed of CdFe_(2)O_(4) nanoparticles and g-C3N4 nanosheets were systematically characterized by different techniques including X-ray diffraction,scanning electron microscope,transmission electron microscope,Fourier transform infrared spectroscopy,X-ray photoelectron spectroscopy,UV–vis DRS,chemical oxygen demand,inductively coupled plasma mass spectrometer,photochemical test and electron spin resonance spectrometer *** optimal photocatalytic activity for ceftiofur sodium photodegradation was achieved by modulating the weight ration between CdFe_(2)O_(4) nanoparticles and g-C_(3)N_(4) *** result from photocatalytic tests indicate that Cd Fe_(2)O_(4)/g-C_(3)N_(4)-2 hybrid sample exhibit highly efficient photocatalytic activity towards ceftiofur sodium removal in comparison with pristine CdFe_(2)O_(4) nanoparticles and pure g-C_(3)N_(4) *** the excellent photocatalytic stability of CdFe_(2)O_(4)/g-C_(3)N_(4)-2 hybrid sample was also verified during recycling runs towards photocatalytic ceftiofur sodium *** significant enhancement of photocatalytic activity was attributed to the Z-scheme charge separation and transfer based on the construction of tight heterogeneous interface and well-matched band *** expect this research to provide a new insight into the design and preparation of direct Z-scheme hybrid photocatalysts for environmental remediation.

关键词： CdFe2O4 g-C3N4 Z-scheme Photodegradation

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Recent Advances of Stable Phenoxyl Diradicals

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Chemical Research in Chinese Universities 2023年第2期39卷 170-175页

作者： ZHANG Hanjun miao fang LIU Xiaodong WANG Dongsheng ZHENG Yonghao School of Optoelectronic Science and Engineering University of Electronic Science and Technology of China(UESTC)Chengdu610054P.R.China Institute of Electronic and Information Engineering of UESTC in Guangdong Dongguan523808P.R.China

Organic radicals with unpaired electrons have shown great semiconducting properties with potential applications in the field of organic photodetectors,organic light-emitting diodes and organic spintronics.A major problem for limiting radicals from laboratory research to practical applications is the relatively low chemical and physical ***,the right selection of radical core is the key to meaningful scientific *** radical is one of the few stable radicals with spin distribution ***,phenoxyl diradicals provide extract stability due to multiple resonance *** to the long-distance spin distribution,which makes phenoxyl diradicals show interesting electronic and magnetic *** this review,we summarize the progress of phenoxyl diradicals in recent years in terms of syntheses,properties and future perspective.

关键词： Phenoxyl Diradical Conjugation Stability

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Enhanced dye degradation capability and reusability of Fe-based amorphous ribbons by surface activation

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Journal of Materials Science & Technology 2020年第18期52卷 163-173页

作者： fang miao Qianqian Wang Siyi Di Lu Yun Jing Zhou Baolong Shen School of Materials Science and Engineering Jiangsu Key Laboratory for Advanced Metallic MaterialsSoutheast UniversityNanjing 211189China Institute of Massive Amorphous Metal Science China University of Mining and TechnologyXuzhou 221116China

The dye degradation capability and reusability of FeSiBNbCu amorphous ribbons are largely enhanced due to the surface activation by ball *** time required for degrading 50%of acid orange 7 solution by the activated FeSiBNbCu amorphous ribbons is only 1/6 of that by the as-quenched ribbons,while the reusable times of the activated ribbons is 6 times larger than that of the as-quenched *** superior degradation capability and better reusability of the activated FeSiBNbCu amorphous ribbons come from not only the uneven topography of the ribbon surface induced by ball milling,but also the stored deformation energy,including the structural rejuvenation and the enlarged residual *** structural rejuvenation in the activated FeSiBNbCu amorphous ribbons is verified by heat relaxation analysis,and the increased residual stress is confirmed by the magnetic domain measurements on the ribbon ***,the environmental adaptability of the activated FeSiBNbCu amorphous ribbons is also *** possible pathways for degradation of acid orange 7 using the activated ribbons,including azo bond cleavage and hydroxylation of benzene ring,are *** work provides a new method to effectively improve the degradation performance of amorphous ribbons.

关键词： Structural rejuvenation Stored deformation energy Residual stress Magnetic force microscopy

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Unfavorable outcome of antiviral therapy in cytomegaloviruspositive ulcerative colitis may be due to inappropriate study inclusion in meta-analysis

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World Journal of Gastroenterology 2015年第5期21卷 1689-1690页

作者： Xiao-Wei Wu miao-fang Yang Nan Li fang-Yu Wang Department of Gastroenterology and Hepatology Jinling HospitalMedical School of Nanjing University

Some previous articles reported that antiviral treatment was effective to reduce the colectomy rate in ulcerative colitis(UC) patients with cytomegalovirus(CMV) *** et al recently carried out a systematic review and meta-analysis to evaluate the impact of antiviral therapy on CMV-positive *** results showed that patients who received antiviral treatmenthad a higher risk of 30-d *** found that in this meta-analysis,some studies were inappropriately included,leading to an unfavorable outcome of antiCMV therapy in UC patients.

关键词： Ulcerative colitis Cytomegalovirus Antiviral thera

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Synthesis and Structure of Zinc Complex of N, N-bis ( benzimidazol-2-yl-methyl ) amine

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Chinese Chemical Letters 2001年第6期12卷 563-564页

作者： Xiao Lan LIU Qing Yan CHENG Xia YANG Zhi Wei miao Wei LIU fang Ming miao College of Chemistry and Life Science Tianjin Normal UniversityTianjin 300074

The Zinc complex of N, N-bis (benzimidazol 2-yl-methy])amine has been synthesized and its crystal structure determined by X-ray diffraction method. The structure features of the complex are described.

关键词： Zinc compex N N-bis (benzimidazol-2-yl-methyl)amine superoxide dismutase (SOD)

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