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Distribution and Sources of Organic Matter in Surface Sediments of the Northern Bering and Chukchi Seas by Using Bulk and Tetraether Proxies

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Journal of Ocean University of China 2019年第3期18卷 563-572页

作者： JI Zhongqiang JIN Haiyan stein Ruediger LI Zhongqiao BAI Youcheng LI Hongliang ZHANG Yang CHEN Jianfang Key laboratory of Marine Ecosystem and Biogeochemistry State Oceanic Administration Second Institute of Oceanography Ministry of Natural Resources Hangzhou 310012 China State Key laboratory of Satellite Ocean Environment Dynamics Hangzhou 310012 China Alfred Wegener Institute Helmholtz Center for Polar and Marine Research Bremerhaven 27568 Germany

The organic matter (OM) preserved in Arctic Ocean sediments is of great importance to the global carbon budget. How-ever, works that apply multiple proxies to determine the distribution and concentration of organic carbon (OC) in the surface sedi-ments of the northern Bering and Chukchi Seas remain limited. Here a multiproxy approach based on bulk OM parameters and the branched vs. isoprenoid tetraether (BIT) index was used to investigate the distribution and sources of OM in the surface sediments of the northern Bering and Chukchi Seas. Binary and ternary mixing models were applied to trace the contribution of different OC sources to the total OC in the study area. The δ13C values of the sediments provided by the binary model showed that the proportion of terrestrial OC fell in the range of 27.4%–79.8% (46.2% on average). The BIT index returned the lowest fraction (4.8%–27.3%, 12.0% on average). The ternary mixing model was employed to determine the plant-, soil-, and marine-derived fractions of the total OM. The ternary model showed that 11.5%±6.3%, 31.4%±9.5%, and 57.1%±12.4% of OM in the sediment of the study area was derived from soil, plants, and marine sources, respectively. The differences in OM composition between the west and east sides of the Chukchi Sea were controlled by OM inputs from key water masses (i.e., Anadyr Water and Alaska Coastal Water), river discharge, and the nutrient supply from the Pacific inflow that supports marine productivity.

关键词： northern Bering Sea Chukchi Sea organic matter GDGTs bulk parameters

Concurrent Deficiency of Gibberellins and Abscisic Acid Causes Plant Male Sterility

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Journal of Genetics and Genomics 2014年第11期41卷 601-604页

作者： Kai Shu Yaorong Wu Wenyu Yang Qi Xie Key laboratory of Crop Ecophysiology and Farming System in Southwest China of Ministry of Agriculture Department of BiotechnologySichuan Agricultural University State Key laboratory of Plant Genomics National Center for Plant Gene ResearchInstitute of Genetics and Developmental BiologyChinese Academy of Sciences

Plant fertility influences crop yield and quality, and thus is an important economic trait for agricultural production. There- fore, it is essential to understand the precise molecular mechanisms that control plant fertility. In the past decades, many studies demonstrated that the phytohormones gibberellin （GA） and abscisic acid （ABA） play key roles in the regulation of plant fertility （Kasembe, 1967; stein, 1971; Jacobsen and Olszewski, 1991; Zhu et al., 2010）, but the detailed mecha- nisms largely remain unknown so far.

关键词： ABA Concurrent Deficiency of Gibberellins and Abscisic Acid Causes Plant Male Sterility

The culture and establishment of embryonic germ(EG)cell lines from Chinese mini swine

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Cell Research 2003年第3期13卷 195-202页

作者： HSIAO CHIEN TSUNG Shanghai Institutes for Biologcal Sciences of Biochemistry and Cell Biology Chinese Academy of Sciences Shanghai 200031 Institute laboratory of Embryonic Stem Cell China

As a part of a basic research project on Xeno-transplantion,we have been engaged in the derivation ofembryonic stem cell lines from Chinese mini ***,we reported for the first time the establishmentof two porcine EG cell lines(BPEG1 and BPEG2)from primordial germ cells of genital ridges of a 28 anda 27 d embryos *** pluripotent nature has been identified by colony morphology,markercharacterization as well as well as by in vitro and in vivo *** porcine EG cells are potentiallyuseful for further basic studies.

关键词： primordial germ cells EG cells porcine Chinese mini swine.

Army-Materiel-System-Analysis-Activity Maturity Projection Model Based on a Subsystem stein Estimator

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Journal of Donghua University(English Edition) 2020年第5期37卷 436-445页

作者： LI Zhongsheng FAN Jinwei PAN Ri Beijing Key laboratory of Advanced Manufacturing Technology Beijing University of TechnologyBeijing 100124China

A reliability-growth test is often used to assess complex systems under ***-growth models are usually used to quantify the achievable reliability indices and predict the expected reliability *** Crow army-materiel-system-analysis-activity(Crow-AMSAA)projection model and the AMSAA maturity projection(AMPM)-stein model are suitable for modelling delayed corrective *** AMPM-stein model,which involves more failure data and requires limited assumptions,is more robust than the Crow-AMSAA projection ***,the rationality of the stein factor introduced in the AMPM-stein model has always been *** AMPM-stein extended projection model,derived from data regrouping based on similar failure mechanisms,is presented to alleviate the *** study demonstrated that the proposed model performed well,the prediction results were credible,and the robustness of the proposed model was ***,the stein-shrinkage factors,which are derived from components with similar inherent failure mechanisms,are easier to understand and accept in the field of *** example shows that the proposed model is more suitable and accurate than the Crow-AMSAA model and the AMPM-stein model,by comparing the projection values based on the failure data of the previous phases with the actual values of the current *** study provides a technical basis for extensive applications of the proposed model.

关键词： reliability projection army-materiel-system-analysis-activity maturity projection model(AMPM) stein estimator subsystem

Rice Gene Index:A comprehensive pan-genome database for comparative and functional genomics of Asian rice

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Molecular Plant 2023年第5期16卷 798-801页

作者：于志超陈永明周勇张雨露李梦圆欧阳亦聃 Dmytro Chebotarov Ramil Mauleon 赵虎谢为博 Kenneth L.McNally Rod A.Wing 郭伟龙张建伟 National Key laboratory of Crop Genetic Improvement Hubei Hongshan LaboratoryHuazhong Agricultural UniversityWuhan 430070China Frontiers Science Center for Molecular Design Breeding Key Laboratory of Crop Heterosis and Utilization(MOE)and Beijing Key Laboratory of Crop Genetic ImprovementChina Agricultural UniversityBeijing 100193China Center for Desert Agriculture Biological and Environmental Sciences&Engineering Division(BESE)King Abdullah University of Science and Technology(KAUST)Thuwal 23955-6900Saudi Arabia International Rice Research Institute(IRRI) Los Ban˜osLaguna 4031Philippines Arizona Genomics Institute School of Plant SciencesUniversity of ArizonaTucsonAZ 85721USA

Dear Editor,Asian rice(Oryza sativa)is the staple food for half the world and is a model crop that has been extensively *** contributes20%of calories to the human diet(stein et al.,2018).With the increase in global population and rapid changes in climate,rice breeders need to develop new and sustainable cultivars with higher yields,healthier grains,and reduced environmental footprints(Wing et al.,2018).Since the first gold-standard reference genome of rice variety Nipponbare was published(International Rice Genome Sequencing Project,2005),an increasing number of rice accessions have been sequenced,assembled,and annotated with global ***,a single reference genome is obviously insufficient to perform the genetic difference analysis for rice ***,the pan-genome has been proposed as a solution,which allows the discovery of more presence-absence variants compared with single-reference genome-based studies(Zhao et al.,2018).Over the past years,several databases,such as RAP-db(https://***),RGAP(http://***),and Gramene(https://***),have long-term served rice genomic research by providing information based on one or a series of individual reference *** integrate and utilize the genomic information of multiple accessions,we performed comparative analyses and established the user-friendly Rice Gene Index(RGI;https://***)*** is the first gene-based pan-genome database for rice.

关键词： sativa comprehensive cultivar

Comparison among four kinds of data of sea surface wind stress in the South China Sea

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Acta Oceanologica Sinica 2002年第2期21卷 263-273页

作者：谢强王卫强毛庆文 laboratory for Tropical Marine Environmental Dynamics South China Sea Institute of Oceanology Chinese Academy of Sciences Guangzhou 510301 China

By using remote sensing (ERS) data, FSU data, COADS data and Hellerman & Rosen-stein objective analysis data to analyze the sea surface wind stress in the South China Sea, it is found that the remote sensing data have higher resolution and more reasonable values. Therefore we suggest that remote sensing data be chosen in the study of climatological features of sea surface wind stress and its seasonal variability in the South China Sea, especially in the study of small and middle scale eddies.

关键词： The South China Sea sea surface wind stress climatology

Broadband achromatic dielectric metalenses

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Light(Science & Applications) 2018年第1期7卷 236-246页

作者： Sajan Shrestha Adam C.Overvig Ming Lu Aaron stein Nanfang Yu Department of Applied Physics and Applied Mathematics Columbia UniversityNew YorkNY 10027USA Brookhaven National laboratory Center for Functional NanomaterialsUptonNY 11973USA

Metasurfaces offer a unique platform to precisely control optical wavefronts and enable the realization of flat lenses,or metalenses,which have the potential to substantially reduce the size and complexity of imaging systems and to realize new imaging ***,it is a major challenge to create achromatic metalenses that produce a single focal length over a broad wavelength range because of the difficulty in simultaneously engineering phase profiles at distinct wavelengths on a single *** practical applications,there is a further challenge to create broadband achromatic metalenses that work in the transmission mode for incident light waves with any arbitrary polarization *** developed a design methodology and created libraries of meta-units—building blocks of metasurfaces—with complex cross-sectional geometries to provide diverse phase dispersions(phase as a function of wavelength),which is crucial for creating broadband achromatic *** elucidated the fundamental limitations of achromatic metalens performance by deriving mathematical equations that govern the tradeoffs between phase dispersion and achievable lens parameters,including the lens diameter,numerical aperture(NA),and bandwidth of achromatic *** experimentally demonstrated several dielectric achromatic metalenses reaching the fundamental *** metalenses work in the transmission mode with polarization-independent focusing efficiencies up to 50%and continuously provide a near-constant focal length over λ=1200–1650 *** unprecedented properties represent a major advance compared to the state of the art and a major step toward practical implementations of metalenses.

关键词： chromatic dielectric limitations

Manipulating the Gut Microbiome to Alleviate Steatotic Liver Disease:Current Progress and Challenges

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Engineering 2024年第9期40卷 51-60页

作者： Ernesto Saenz Nathally Espinosa Montagut Baohong Wang Christoph stein-Thöringer Kaicen Wang Honglei Weng Matthias Ebert Kai Markus Schneider Lanjuan Li Andreas Teufel Division of Hepatology Division of Clinical BioinformaticsDepartment of Medicine ⅡMedical Faculty MannheimHeidelberg UniversityMannheim 68167Germany Clinical Cooperation Unit Healthy Metabolism Center for Preventive Medicine and Digital HealthMedical Faculty MannheimHeidelberg UniversityMannheim 68167Germany School of Medicine Universidad de Los AndesBogotá111711Colombia State Key laboratory for Diagnosis and Treatment of Infectious Diseases National Clinical Research Center for Infectious DiseasesCollaborative Innovation Center for Diagnosis and Treatment of Infectious DiseasesThe First Affiliated HospitalZhejiang University School of MedicineHangzhou 310003China Internal MedicineⅠ University Clinic Tuebingen&CoE CMFI(Controlling Microbes to Fight Infections)Tuebingen 72074Germany Department of MedicineⅡ Medical Faculty MannheimHeidelberg UniversityMannheim 68167Germany DKFZ Hector Cancer Institute at the University medical Center Mannheim 69120Germany Molecular Medicine Partnership Unit European Molecular Biology LaboratoryHeidelberg 69117Germany Department of MedicineⅢ University Hospital RWTH AachenAachen 52074Germany

The prevalence of metabolic-dysfunction-associated steatotic liver disease(MASLD)is alarmingly high;it is estimated to affect up to a quarter of the global population,making it the most common liver disorder *** is characterized by excessive hepatic fat accumulation and is commonly associated with comorbidities such as obesity,dyslipidemia,and insulin resistance;however,it can also manifest in lean ***,it is crucial to develop effective therapies for this complex ***,there are no approved medications for MASLD treatment,so there is a pressing need to investigate alternative *** research has characterized MASLD as a multifaceted disease,frequently linked to metabolic disorders that stem from dietary *** suggests that changes in the gut microbiome play a fundamental role in the development and progression of MASLD from simple steatosis to steatohepatitis and even hepatocellular carcinoma(HCC).In this review,we critically examine the literature on the emerging field of gut-microbiota-based therapies for MASLD and metabolicdysfunction-associated steatohepatitis(MASH),including interventions such as fecal microbiota transplantation(FMT),probiotics,prebiotics,short-chain fatty acids,antibiotics,metabolic pathway targeting,and immune checkpoint kinase blockade.

关键词： Microbiome Fecal microbiota transplantation Metabolic-dysfunction-associated steatotic liver disease Fatty liver

An Off-Diagonal Marcinkiewicz Interpolation Theorem on Lorentz Spaces

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Acta Mathematica Sinica,English Series 2011年第8期27卷 1477-1488页

作者： Yi Yu LIANG Li Guang LIU Da Chun YANG School of Mathematical Sciences Beijing Normal UniversityLaboratory of Mathematics and Corr~plex Systems Ministry of Education Beijing 100875 P. R. China Department of Mathematics School of Information Renmin University of China Beijing 100872 P. R. China School of Mathematical Sciences Beijing Normal UniversityLaboratory of Mathematics and Complex Systems Ministry of Education Beijing 100875 P. R. China

Let （X, μ） be a measure space. In this paper, using some ideas from Grafakos and Kalton, the authors establish an off-diagonal Marcinkiewicz interpolation theorem for a quasilinear operator T in Lorentz spaces L^P,q（X） with p, q ￡（0, ∞], which is a corrected version of Theorem 1.4.19 in [Grafakos, L.： Classical Fourier Analysis, Second Edition, Graduate Texts in Math., No. 249, Springer, New York, 2008] and which, in the case that T is linear or nonnegative sublinear, p ￡ [1, ∞） and q ￡ [l,∞）, was obtained by stein and Weiss [Introduction to Fourier Analysis on Euclidean Spaces, Princeton University Press, Princeton, N.J., 1971].

关键词： Quasilinear operator Marcinkiewicz interpolation theorem Lorentz space restricted weak type estimate