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绝经后女性维生素D水平与生殖特点和运动膳食情况的关系

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中国组织工程研究 2025年第5期29卷 1021-1025页

作者：王东阳杨巧慧林欣潮北京中医药大学东直门医院北京市100010

背景:研究证明绝经后骨质疏松症与女性生殖特点和运动膳食有关,但是鲜有研究证明女性生殖特点及运动膳食是否对绝经后女性维生素D有影响。目的:探讨北京市绝经后女性维生素D水平与女性生殖特点和运动膳食情况的关系及其影响因素。方法:... 详细信息

背景:研究证明绝经后骨质疏松症与女性生殖特点和运动膳食有关,但是鲜有研究证明女性生殖特点及运动膳食是否对绝经后女性维生素D有影响。目的:探讨北京市绝经后女性维生素D水平与女性生殖特点和运动膳食情况的关系及其影响因素。方法:选取2017年9月至2018年5月北京市多个城区的17个社区现场问卷调查的727例46-75岁绝经后女性作为研究对象,问卷内容包括受试者的基本信息和月经史、绝经史、妊娠史、运动膳食情况等。采用电化学发光免疫分析仪及其配套试剂测定25-(OH)D水平;使用双能X射线骨密度检测仪测定腰椎(L1-L4、整体)和双髋关节(股骨颈、整体)的骨密度和T值;观察维生素D与生殖特点和运动膳食的相关性,并进行维生素D的影响因素分析。结果与结论:①维生素D正常组136例(18.7%),维生素D不足组389例(53.5%),维生素D缺乏组202例(27.8%);平均维生素D水平为(15.60±5.85)ng/mL。②随着维生素D水平的升高,不同部位的骨密度值及T值也随之升高。③维生素D水平与初潮年龄、月经持续天数、绝经阶段、运动情况、饮食类型、饮食偏好均呈正相关(P0.05)。④多因素有序Logistic回归分析结果显示,喝奶制品频率对绝经后女性维生素D值存在正向相关(P<0.05),且奶制品是维生素D水平的保护因素。⑤调查结果说明,北京市绝经后女性维生素D水平普遍不足、骨密度值普遍低下,维生素D水平与部分生殖特点、运动膳食情况存在关联,且其中喝奶制品是其保护因素。因此可以通过开展相关骨质疏松的健康教育,对绝经后女性膳食情况进行调整加以干预,增加体内维生素D含量,以期增加骨密度值,减少绝经后骨质疏松患病率。

关键词：北京市绝经后女性维生素D 生殖特点运动膳食骨质疏松

Surface-ligand protected reduction on plasmonic tuning of one-dimensional MoO_(3−x)nanobelts for solar steam generation

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Nano Research 2020年第11期13卷 3025-3032页

作者： Xindian Li dongyang wang Yun Zhang Luntao Liu Wenshou wang National Engineering Research Center for Colloidal Materials and School of Chemistry and Chemical Engineering Shandong UniversityJinan250100China

Sub-stoichiometric MoO_(3−x)nanostructures with plasmonic absorption via creating oxygen vacancies have attracted extensive attentions for many intriguing ***,the synthesis of one-dimensional(1D)plasmonic MoO_(3−x)nanostructures with widely tunable plasmonic absorption has remained a significant challenge because of their serious morphological destruction and phase change with increasing the concentration of oxygen *** we demonstrate a surface-ligand protected reduction strategy for the synthesis of 1D MoO_(3−x)nanobelts with tunable plasmonic absorption in a wide wavelength range from 200 to 2,500 *** glycol(PEG-400)is used as both the reductant to produce oxygen vacancies and the surface protected ligands to maintain 1D morphology during the formation process of MoO_(3−x)nanobelts,enabling the widely tunable plasmonic *** to their broad plasmonic absorption and unique 1D nanostructure,we further demonstrate the application of 1D MoO_(3−x)nanobelts as photothermal film for interfacial solar *** surface-ligand protected reduction strategy provides a new avenue for the developing plasmonic semiconductor oxides with maintained particle morphology and thus enriching their wide applications.

关键词： MoO3−x nanobelts surface-ligand protected reduction oxygen vacancies plasmonic tuning interfacial water evaporation

Transient thermal network model for train-induced wind cooling dry-type on-board traction transformer in electric multiple units

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High Voltage 2023年第3期8卷 514-526页

作者： Lijun Zhou Shuai Yuan Qiuyue Zhu dongyang wang Lujia wang School of Electrical Engineering Southwest Jiaotong UniversityChengduChina School of Electrical and Power Engineering China University of Mining and TechnologyXuzhouChina

Thermal characteristic is one of the key performances of dry-type on-board traction transformer(D-OBTT),which directly affects the operation safety of the new generation electric multiple ***,due to the particularity of train-induced wind cooling mode of D-OBTT,the existing efficient thermal modelling methods cannot be used under fluctuating air velocity and load.A time-saving transient thermal model for D-OBTT is ***,the framework of the transient thermal network model(TTNM)is proposed considering the coexistence of non-fully and fully developed state of the train-induced wind and the addition heat flow in the solid ***,a novel formula for calculating the length of non-fully developed section considering the geometric dimensions and heat flux density is proposed based on computational fluid dynamics(CFD)parametric sweeps for the first *** accuracy of TTNM is validated by a D-OBTT experimental setup,and the time consumption is significantly reduced compared with CFD.

关键词： traction network thermal

Electro-optomechanical cooperative cooling of nanomechanical oscillator beyond resolved sideband regime

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Science China(Physics,Mechanics & Astronomy) 2020年第3期63卷 25-32页

作者： ZhongHui Yuan dongyang wang ChengHua Bai HaoTian Yang HongFu wang AiDong Zhu Department of Physics College of ScienceYanbian UniversityYanji 133002China Department of Physics Harbin Institute of TechnologyHarbin 150001China

We propose a ground-state cooling scheme for a nanomechanical oscillator(NMO)that interacts with an optical cavity via radiation pressure at one side and with a superconducting microwave cavity via a capacitor at the other *** driving these two cavities on their respective red sidebands with extra laser and microwave fields,the NMO’s dual cooling channel is created through electro-optomechanical *** from the conventional optomechanical system with a single optical cavity wherein ground-state cooling is limited in the resolved sideband,the proposed scheme allows the optical cavity to function in an unresolved sideband regime under the cooperation of a microwave cavity with a high quality factor,or vice *** a weak coupling regime we demonstrate that the NMO can be cooled to near its ground-state from a finite temperature with a cooling rate that is significantly faster than that of the single-cavity optomechanical *** heating process can be completely suppressed by the cooperation of the dual cooling channel by appropriately selecting the system’s *** a decreasing thermal phonon number,the numerical results of final mechanical occupancy gradually approach the analytical cooling limit.

关键词： electro-optomechanics superconducting microwave cavity ground-state cooling dual cooling channel

Four-coordinate disilyl cobalt(Ⅱ)complexes with NHC ligation:Synthesis,characterization,and reactivity

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Chinese Chemical Letters 2024年第3期35卷 292-298页

作者： Lan Zhou dongyang wang Chengbo Yang Liang Deng College of Chemistry and Materials Science University of Science and Technology of ChinaHefei 230026China State Key Laboratory of Organometallic Chemistry Shanghai Institute of Organic ChemistryChinese Academy of SciencesShanghai 200032China School of Chemistry and Materials Science Hangzhou Institute for Advanced StudyUniversity of Chinese Academy of SciencesHangzhou 310024China

Silyl cobalt species are putative intermediates in cobalt-catalyzed transformations of ***,their reactivity has remained poorly *** here is the investigation on four-coordinate disilyl Co(Ⅱ)complexes with N-hetereocyclic carbene *** reactions of[(ICy)_(2)Co(vtms)](ICy=1,3-dicyclohexylimidazol-2-ylidene,vtms=vinyltrimethylsilane)with primary and secondary hydrosilanes(3 equiv.)furnish the four-coordinate disilyl complexes[trans-(ICy)_(2)Co(SiHRR')_(2)](SiHRR'=SiH_(2)Mes,1;SiH_(2)Ph,2;SiH_(2)Cy,3;SiHPh_(2),4;SiHEt_(2),5)in moderate to good *** structures of 1,2 and 4 were established by single-crystal X-ray *** magnetic susceptibility measurement and EPR spectroscopy indicate their low-spin nature(S=1/2).Reactivity studies on 4 led to the establishment of the conversions of 4 to the disilyl dihydride Co(Ⅲ)complex[K(THF)][(ICy)_(2)Co(H)_(2)(SiHPh_(2))_(2)]_n(6)and the fluorosilyl Co(Ⅱ)complex[(ICy)_(2)Co(THF)(SiFPh_(2))][BF_(4)](7)when 4 was treated with excess amount of K and AgBF_(4),respectively,in *** conversions hint at the high activity of low-valent and high-valent disilyl cobalt species[trans-(ICy)_(2)Co(SiHPh_(2))_(2)]^(1-)and[trans-(ICy)_(2)Co(SiHPh_(2))_(2)]^(2+).Complex 4 is reactive toward terminal alkynes,but inert toward alkenes and internal *** reactions of 4 with terminal alkynes CyC≡CH and Me_(3)SiC≡CH(3 equiv.)yield the Co(Ⅱ)complexes[(ICy)_(2)Co(C≡CCy)_(2)](8)and[(ICy)_(2)Co(C≡CSiMe_(3))((SiMe_(3))C=CH_(2))](9),respectively,along with H_(2)SiPh_(2)and alkynylsilanes RC≡CSiHPh_(2)(R=Cy,SiMe_(3)),whereas the reaction with 4-CF_(3)C_(6)H_(4)C≡CH(3 equiv.)produce[(ICy)_(2)Co(C≡CAr)((Ar)C=CH(SiHPh_(2))C=CHAr)](Ar=4-CF_(3)C_(6)H_(4))(10)and H_(2)SiPh_(2).These reactions are proposed to involveσ-bond metathesis reactions between alkyne C(sp)-H bonds and Co-Si bonds in *** 6–10 have been characterized by NMR spectroscopy,X-ray diffraction study,and elemental analysis.

关键词： Disilyl Cobalt N-Heterocyclic carbene Four-coordinate

Advances in Transition-Metal-Catalyzed Hydrogermylation of Alkenes and Alkynes

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Chinese Journal of Chemistry 2023年第22期41卷 3063-3081页

作者： Zungui Zhao Furen Zhang dongyang wang Liang Deng Division of Molecular Catalysis and Synthesis Henan Institute of Advanced TechnologyZhengzhou UniversityZhengzhouHenan 450001China State Key Laboratory of Organometallic Chemistry Shanghai Institute of Organic ChemistryChinese Academy of SciencesShanghai200032China Schoolof Chemistry and Chemical Engineering ShaoxingUniversityShaoxingZhejiang312000China

Hydrogermylation of alkenes and alkynes provides a straightforward synthetic route to organogermanium compounds that have been found applications in organic synthesis,medicinal chemistry,and material *** paper reviews the advances in transition-metal-catalyzed hydrogermylation of unsaturated carbon-carbon bonds,including alkenes,alkynes,dienes,and allenes,with the objective of providing readers with the status of the ***,problems,and perspectives in this field are discussed.

关键词： Hydrogermylation Alkene Alkyne Diene Allene Transition-metal Organogermanium

Optical cavity resonance with magnetized plasma

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Chinese Optics Letters 2018年第5期16卷 17-20页

作者： dongyang wang Jiaguang Han Shuang Zhang School of Physics ＆ Astronomy University of Birmingham Birmingham B15 2TT UK Center for Terahertz Waves and College of Precision Instrument and Optoeleetronics Engineering Tianjin University Tianjin 300072 China

Indefinite media with mixed signs of dielectric tensor elements possess unbounded equifrequency surfaces that have been utilized for diverse applications such as superimaging, enhanced spontaneous emission, and thermal radiation. One particularly interesting application of indefinite media is an optical cavity supporting anomalous scaling laws. In this Letter, we show that by replacing an indefinite medium with magnetized plasma one can construct a tunable indefinite cavity. The magnetized plasma model is based on realistic semiconductor material properties at terahertz frequencies that show hyperbolic dispersion in a certain frequency regime. The hyperbolic dispersion features are utilized for the design of optical cavities. Dramatically different sizes of cavities can support the same resonance mode at the same frequency. For a cavity of fixed size, the anomalous scaling law between the resonance frequency and mode number is confirmed. The resonance frequency can be strongly modulated by changing the strength of the applied magnetic field. The proposed model provides active controllability of terahertz resonances on the deep subwavelength scale with realistic semiconductor materials.

关键词： Optical cavity resonance with magnetized plasma

Isolable Anion Radicals of Nitrosoarenes

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Chinese Journal of Chemistry 2020年第2期38卷 158-162页

作者： dongyang wang Masilamani Tamizmani Xuebing Leng Liang Deng State Key Laboratory of Organometallic Chemistry Center for Excellence in Molecular SynthesisShanghai Institute of Organic ChemistryChinese Academy of Sciences345 Lingling RoadShanghai 200032China Shenzhen Grubbs Institute Southern University of Science and TechnologyShenzhenGuangdong 518055China

Summary of main observation and conclusion The rich redox chemistry of nitrosoarenes has rendered these reactive molecules very useful in modern synthetic and material *** studies have revealed the capability of nitrosoarenes to undergo one-electron oxidation or reduction reaction for a long ***,the isolation and structural characterization of nitrosoarene radical compounds deviating the stabilization of transition-metal have not been *** on the reduction reaction of nitrosoarenes bearing steric demanding substituents has now revealed that the interaction of 2,6-dimesityl-1-nitroso-benzene(DmpNO)or 2,4,6-tri(tert-butyl)-1-nitroso-benzene(TtpNO)with KC8 and crypt-2,2,2 can produce the corresponding anion radical compound[K(crypt-2,2,2)][DmpNO](1)or[K(crypt-2,2,2)][TtpNO](2)in good isolated *** 1 and 2 represent the first examples of isolable nitrosoarene radical compounds deviating the stabilization of transition-metal,and have been characterized by single-crystal X-ray diffraction study,electron paramagnetic resonance(EPR)spectroscopy,and elemental *** study in collaboration with the characterization data revealed that the unpaired spin in[DmpNO]·-and[TtpNO]·-delocalizes on the nitroso and the central phenyl groups.

关键词： stabilization radical benzene

Ferroptosis molecular inducers:A future direction for malignant tumor chemotherapy

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BIOCELL 2022年第7期46卷 1599-1611页

作者： ZIQIAN wang YAQI LI dongyang wang YINGQIANG SHEN State Key Laboratory of Oral Diseases Chengdu610041China West China School of Stomatology Sichuan UniversityChengdu610041China National Clinical Research Center for Oral Diseases Chengdu610041China Chinese Academy of Medical Sciences Research Unit of Oral Medicine of Carcinogenesis and Management Chengdu610041China West China Hospital of Stomatology Sichuan UniversityChengdu610041China

Iron-dependent ferroptosis is a form of cell death dependent on iron *** that undergo ferroptosis have glutathione(GSH)deficiency,reduced Glutathione peroxidase-4(GPX4)activity and intracellular lipid peroxidation,Mitochondria,lysosomes and many signal pathways are involved in the regulation of *** importantly,many tumor cells resistant to other cell death methods exhibit sensitivity to ***,over recent years,a number of ferroptosis-induced drugs have been recommended for the treatment of malignant ***,the study of ferroptosis is of great significance for future cancer *** this review,we discussed the metabolic process of ferroptosis,the role of different organelles,the typical signaling pathways involved in ferroptosis,as well as natural and synthetic compounds that can induce ferroptosis,aiming to point out new conceptual avenues for utilizing ferroptosis in future cancer treatments.

关键词： Ferroptosis Cancer Organelle Pathways Ferroptosis-induced drugs