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54篇 您的检索式:作者名="Yuxi Yang"
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1Effect of different sources and levels of iron in the diet of sows on iron status in neonatal pigs显示文摘This study was conducted to determine the effects of maternal dietary supplementation of ferrous glycine chelate(Fe-Gly) and ferrous sulfate monohydrate(FeSO_4·H_2O) on the relative organ weight, tissue iron contents, red blood cells(RBC), hemoglobin concentration(HGB) and hematocrit(HCT) in blood, as well as ferritin(Fn), serum iron(SI), and total iron binding capacity(TIBC) in serum of newborn piglets.Forty-five sows(Landrace × Large white, mean parity 3 to 4, no significant differences in BW) were randomly allotted to 9 treatments(n=5 sows/treatment): control(basal diet with no Fe supplementation), the basal diet supplemented with 50, 80, 110 or 140 mg Fe/kg as Fe-Gly, and the basal diet supplemented with 50, 80, 110 or 140 mg Fe/kg as FeSO_4·H_2O.The neonatal piglets(n=45) were used to determine the relative organ weight, tissue iron contents and blood biochemical indices.Compared with the control, the relative weight of spleen and kidney were significantly increased(P < 0.05) in the Fe-Gly groups.The iron contents in liver,spleen, kidney and femur were also found increased(P < 0.05) in the Fe-Gly groups.The RBC(d 1 and 21),HGB(d 1 and 21) and HCT(d 1 and 21) in blood and Fn(d 1) and SI(d 1 and 21) significantly increased(P < 0.05), but the TIBC(d 1 and 21) in serum decreased(P < 0.05) in the Fe-Gly groups.Moreover, the kidney relative weight, iron content in liver, spleen, kidney and femur, RBC(d 1) and HGB(d 21) in blood, and SI(d 1)in the Fe-Gly groups increased(P < 0.05) compared with the FeSO_4·H_2O treatment.Linear and quadratic responses of the kidney relative weight, the iron content in liver, spleen, kidney and femur, RBC(d 1 and 21),HGB(d 1 and 21) and HCT(d 1 and 21) in whole blood, SI(d 1) and TIBC(d 1 and 21) in the Fe-Gly groups were observed(P < 0.05).Linear responses of Fn(d 1 and 21) and SI(d 21) in the Fe-Gly groups, and spleen relative weight, HCT(d 1), Fn(d 1) and TIBC(d 1 and 21) in the FeSO_4·H_2O groups were observed(P < 0.05).These finding suggest that Fe-Gly supplemented at the level of 110 mg/kg in the diet of sows in this experiment is superior to other forms of supplementation, based on HGB concentration, the relative organ weight, tissue iron contents and blood biochemical indices of piglets.Yan Li Weiren Yang Donghua Dong Shuzhen Jiang Zaibin Yang Yuxi Wang 2018Animal Nutrition2018,,2:11
2Concurrent catalytic removal of typical volatile organic compound mixtures over Au-Pd/α-MnO2 nanotubes显示文摘α-MnO_2 nanotubes and their supported Au-Pd alloy nanocatalysts were prepared using hydrothermal and polyvinyl alcohol-protected reduction methods, respectively. Their catalytic activity for the oxidation of toluene/m-xylene, acetone/ethyl acetate, acetone/m-xylene and ethyl acetate/m-xylene mixtures was evaluated. It was found that the interaction between Au-Pd alloy nanoparticles and α-MnO_2 nanotubes significantly improved the reactivity of lattice oxygen, and the 0.91 wt.% Au0.48 Pd/α-MnO_2 nanotube catalyst outperformed the α-MnO_2 nanotube catalyst in the oxidation of toluene, m-xylene, ethyl acetate and acetone. Over the0.91 wt.% Au0.48 Pd/α-MnO_2 nanotube catalyst,(i) toluene oxidation was greatly inhibited in the toluene/m-xylene mixture, while m-xylene oxidation was not influenced;(ii) acetone and ethyl acetate oxidation suffered a minor impact in the acetone/ethyl acetate mixture; and(iii) m-xylene oxidation was enhanced whereas the oxidation of the oxygenated VOCs(volatile organic compounds) was suppressed in the acetone/m-xylene or ethyl acetate/m-xylene mixtures. The competitive adsorption of these typical VOCs on the catalyst surface induced an inhibitive effect on their oxidation, and increasing the temperature favored the oxidation of the VOCs. The mixed VOCs could be completely oxidized into CO_2 and H_2 O below 320°C at a space velocity of 40,000 m L/(g·hr). The 0.91 wt.% Au0.48 Pd/α-MnO_2 nanotube catalyst exhibited high catalytic stability as well as good tolerance to water vapor and CO_2 in the oxidation of the VOC mixtures. Thus, the α-MnO_2 nanotube-supported noble metal alloy catalysts hold promise for the efficient elimination of VOC mixtures.Yunsheng Xia Lu Xia Yuxi Liu Tao Yang Jiguang Deng Hongxing Dai 2018Journal of Environmental Sciences2018,30,2:7
3Rational synthesis of carbon shell coated polyaniline/ MoS2 monolayer composites for high-performance supercapacitors显示文摘进行的聚合物通常显示出高特定的电容,但是受不了差的率能力和快速的电容腐烂,它极大地在 supercapacitor 电极限制他们的实际应用。到这个目的,许多研究在由综合改进全面电容的表演上集中了进行聚合物的 nanostructured 或由扔涂层的一个范围增加,活跃表面区域暴露了到电解质并且提高费用运输效率和结构的稳定性。尽管有这,同时完成高特定的电容,好率表演,和长周期生活仍然是可观的挑战。在之中各种各样二维(2D ) 分层的材料,八面(1T ) 分阶段执行铝二硫化物(瞬间 2) nanosheets 有高电的电导率,大特定的表面区域,和唯一的表面化学药品特征,为进行聚合物的 nanostructured 的控制生长使他们成为有趣的底层。这份报纸报导碳的合理合成在 1T 瞬间 2 单层上种的壳涂的 polyaniline (PANI )( 瞬间 2/PANI@C) 。合成电极与 3 nm 碳壳展出了的 ~ 瞬间包括了 2/PANI@C 多达 678 F 耶尙洜暗囊桓鱿灾囟ǖ牡缛萋穑浚?Chao Yang Zhongxin Chen Imran Shakir Yuxi Xu Hongbin Lu 2016Nano Research2016,9,4:5
4Tunable slow-light multi-mode photonic crystal waveguides based on the coupling of square cavities显示文摘The light transmission properties through two-dimensional photonic crystal waveguides based on coupling of square cavities are studied by the finite-difference time-domain technique.Through interlacing the adjacent cavities along the direction vertical to the waveguide,the coupling distance between the adjacent cavities is extended,and the group velocity of the guiding modes can be slowed by five-fold compared with that in vacuum.Because of the different spatial field distributions of various resonant modes,the corresponding group velocities are also different for the same CROW structure.FENG Shuai YANG GuoJian LI YuXi CHEN Xiao WANG YiQuan WANG WenZhong 2012Science China(Physics,Mechanics & Astronomy)2012,55,10:5
5Dissecting human embryonic skeletal stem cell ontogeny by single-cell transcriptomic and functional analyses显示文摘Human skeletal stem cells(SSCs)have been discovered in fetal and adult long bones.However,the spatiotemporal ontogeny of human embryonic SSCs during early skeletogenesis remains elusive.Here we map the transcriptional landscape of human limb buds and embryonic long bones at single-cell resolution to address this fundamental question.We found remarkable heterogeneity within human limb bud mesenchyme and epithelium,and aligned them along the proximal-distal and anterior-posterior axes using known marker genes.Osteo-chondrogenic progenitors first appeared in the core limb bud mesenchyme,which give rise to multiple populations of stem/progenitor cells in embryonic long bones undergoing endochondral ossification.Importantly,a perichondrial embryonic skeletal stem/progenitor cell(eSSPC)subset was identified,which could self-renew and generate the osteochondral lineage cells,but not adipocytes or hematopoietic stroma.eSSPCs are marked by the adhesion molecule CADM1 and highly enriched with FOXP1/2 transcriptional network.Interestingly,neural crest-derived cells with similar phenotypic markers and transcriptional networks were also found in the sagittal suture of human embryonic calvaria.Taken together,this study revealed the cellular heterogeneity and lineage hierarchy during human embryonic skeletogenesis,and identified distinct skeletal stem/progenitor cells that orchestrate endochondral and intramembranous ossification.Jian He Jing Yan Jianfang Wang Liangyu Zhao Qian Xin Yang Zeng Yuxi Sun Han Zhang Zhijie Bai Zongcheng Li Yanli Ni Yandong Gong Yunqiao Li Han He Zhilei Bian Yu Lan Chunyu Ma Lihong Bian Heng Zhu Bing Liu Rui Yue 2021Cell Research2021,31,7:5
6Electron-phonon coupling-assisted universal red luminescence of o-phenylenediamine-based carbon dots显示文摘Due to the complex core-shell structure and variety of surface functional groups,the photoluminescence(PL)mechanism of carbon dots(CDs)remain unclear.o-Phenylenediamine(oPD),as one of the most common precursors for preparing red emissive CDs,has been extensively studied.Interestingly,most of the red emission CDs based on oPD have similar PL emission characteristics.Herein,we prepared six different oPD-based CDs and found that they had almost the same PL emission and absorption spectra after purifiication.Structural and spectral characterization indicated that they had similar carbon core structures but diffferent surface polymer shells.Furthermore,single-molecule PL spectroscopy confirmed that the multi-modal emission of those CDs originated from the transitions of different vibrational energy levels of the same PL center in the carbon core.In addition,the phenomenon of'spectral splitting'of single-particle CDs was observed at low temperature,which confirmed these oPD-based CDs were unique materials with properties of both organic molecules and quantum dots.Finally,theoretical calculations revealed their potential polymerization mode and carbon core structure.Moreover,we proposed the PL mechanism of red-emitting CDs based on oPD precursors;that is,the carbon core regulates the PL emission,and the polymer shell regulates the PL intensity.Our work resolves the controversy on the PL mechanism of oPD-based red CDs.These findings provide a general guide for the mechanism exploration and structural analysis of other types of CDs.Boyang Wang Zhihong Wei Laizhi Sui Jingkun Yu Baowei Zhang Xiaoyong Wang Shengnan Feng Haoqiang Song Xue Yong Yuxi Tian Bai Yang Siyu Lu 2022Light(Science & Applications)2022,11,7:2
7Au-Pd/mesoporous Fe_2O_3:Highly active photocatalysts for the visible-light-driven degradation of acetone显示文摘Three-dimensionally ordered mesoporous Fe_2O_3(meso-Fe_2O_3) and its supported Au, Pd,and Au-Pd alloy(xA uP dy/meso-Fe_2O_3; x = 0.08–0.72 wt.%; Pd/Au molar ratio(y) = 1.48–1.85)photocatalysts have been prepared via the KIT-6-templating and polyvinyl alcohol-protected reduction routes, respectively. Physical properties of the samples were characterized, and their photocatalytic activities were evaluated for the photocatalytic oxidation of acetone in the presence of a small amount of H_2O_2 under visible-light illumination. It was found that the meso-Fe_2O_3 was rhombohedral in crystal structure. The as-obtained samples displayed a high surface area of 111.0–140.8 m^2/g and a bandgap energy of 1.98–2.12 eV. The Au, Pd and/or Au–Pd alloy nanoparticles(NPs) with a size of 3–4 nm were uniformly dispersed on the surface of the meso-Fe_2O_3 support. The 0.72 wt.% AuP d1.48/meso-Fe_2O_3 sample performed the best in the presence of 0.06 mol/L H_2O_2 aqueous solution, showing a 100% acetone conversion within4 hr of visible-light illumination. It was concluded that the good performance of 0.72 wt.%AuPd_(1.48)/meso-Fe_2O_3 for photocatalytic acetone oxidation was associated with its ordered mesoporous structure, high adsorbed oxygen species concentration, plasmonic resonance effect between AuPd_(1.48) NPs and meso-Fe_2O_3, and effective separation of the photogenerated charge carriers. In addition, the introduction of H_2O_2 and the involvement of the photo-Fenton process also played important roles in enhancing the photocatalytic activity of 0.72 wt.%AuPd_(1.48)/meso-Fe_2O_3.Hongxia Lin Yuxi Liu Jiguang Deng Kunfeng Zhang Xing Zhang Shaohua Xie Xingtian Zhao Jun Yang Zhuo Han Hongxing Dai 2018Journal of Environmental Sciences2018,30,8:2
8Dielectric metalens-based Hartmann–Shack array for a high-efficiency optical multiparameter detection system显示文摘The real-time measurement of the polarization and phase information of light is very important and desirable in optics.Metasurfaces can be used to achieve flexible wavefront control and can therefore be used to replace traditional optical elements to produce a highly integrated and extremely compact optical system.Here,we propose an efficient and compact optical multiparameter detection system based on a Hartmann–Shack array with 2×2subarray metalenses.This system not only enables the efficient and accurate measurement of the spatial polarization profiles of optical beams via the inspection of foci amplitudes,but also measures the phase and phasegradient profiles by analyzing foci displacements.In this work,details of the design of the elliptical silicon pillars for the metalens are described,and we achieve a high average focusing efficiency of 48%and a high spatial resolution.The performance of the system is validated by the experimental measurement of 22 scalar polarized beams,an azimuthally polarized beam,a radially polarized beam,and a vortex beam.The experimental results are in good agreement with theoretical predictions.YUXI WANG ZHAOKUN WANG XING FENG MING ZHAO CHENG ZENG GUANGQIANG HE ZHENYU YANG YU ZHENG JINSONG XIA 2020Photonics Research2020,8,4:2
9New power system development path mechanism design显示文摘Carrying out green energy transformation,implementing clean energy power replacement and supply,and developing a new power system are some primary driving forces needed to fulfill China’s carbon-peak and carbon-neutral strategic goals.The construction of new power systems in China’s provinces and cities is developing rapidly,and the lack of a typical model promotes the application.The new power system path design should be based on the actual development of the power grid in different regions,energy use characteristics,and other actual needs to carry out the differentiated path design.In this context,this study analyzes the characteristics of the new domestic power system based on the policy background of the new domestic power system,constructs a new model for power system development stage identification,and proposes the overall design of the new power system development path from the power supply,transmission and distribution,and load sides.It also uses the Hebei South Network as an example to explore the development stage of the Hebei South Grid based on actual development needs.Finally,this study designs a novel power system development path for the entire supply and demand chain for the Hebei South Grid to propose ideas for constructing a new power system in China and to help green energy transformation.Xiangyu Chen Guang Tian Yan Huang Yang Yang Jialin Li Yuxi Wu Yuanying Chi 2023Global Energy Interconnection2023,6,2:2
10Relative distribution of Pb 2+ sorption mechanisms by sludge-derived biochar显示文摘Huanliang Lu Weihua Zhang Yuxi Yang Xiongfei Huang Shizhong Wang Rongliang Qiu 2011Water Research2011,,3:2
11Three-Dimensional Finite Element Numerical Simulation and Physical Experiment for Magnetism-Stress Detecting in Oil Casing显示文摘The casing damage has been a big problem in oilfield production. The current detection methods mostly are used after casing damage, which is not very effective. With the rapid development of China's offshore oil industry, the number of offshore oil wells is becoming larger and larger. Because the cost of offshore oil well is very high, the casing damage will cause huge economic losses. What's more, it can also bring serious pollution to marine environment. So the effective methods of detecting casing damage are required badly. The accumulation of stress is the main reason for the casing damage. Magnetic anisotropy technique based on counter magnetostriction effect can detect the stress of casing in real time and help us to find out the hidden dangers in time. It is essential for us to prevent the casing damage from occurring. However, such technique is still in the development stage. Previous studies mostly got the relationship between stress and magnetic signals by physical experiment, and the study of physical mechanism in relative magnetic permeability connecting the stress and magnetic signals is rarely reported. The present paper uses the ANSYS to do the three-dimensional finite element numerical simulation to study how the relative magnetic permeability works for the oil casing model. We find that the quantitative relationship between the stress' s variation and magnetic induction intensity's variation is: Δδ =K* ΔB, K = 8.04×109, which is proved correct by physical experiment.MENG Fanshun ZHANG Jie YANG Chaoqun YU Weizhe CHEN Yuxi 2015Journal of Ocean University of China2015,14,4:2
12Structure-based development of three- and four-antibody cocktails against SARS-CoV-2 via multiple mechanisms显示文摘The ongoing coronavirus disease 2019(COVID-19)pandemic caused by severe acute respiratory syndrome coronavirus-2(SARS-CoV-2)has resulted in an unprecedented public health crisis,galvanizing a global effort for rapidly developing new therapeutic strategies effective against COVID-19.Human monoclonal antibodies(mAbs)are promising therapeutic molecules that can be used for the prevention or treatment of viral infectious diseases,including COVID-19.For instance,ZMapp^(TM),a cocktail consisting of three different mAbs targeting the Ebola glycoprotein is one of the most successful antibody-based therapeutic for treating infections caused by Ebola virus.1 Notably,this cocktail combines the best-performing neutralizing antibodies(NAbs)screened and developed using two separate approaches,one from humanized antibodies of origin and the other from human survivors.Yao Sun Lei Wang Rui Feng Nan Wang Yuxi Wang Dandan Zhu Xiaorui Xing Peng Yang Yanjun Zhang Weimin Li Xiangxi Wang 2021Cell Research2021,31,5:2
13Responses of Gardenia jasminoides Ellis Leaf Traits and Anatomical Structures to Drought Stress in Purple Soil显示文摘[Objectives]This study was conducted to investigate the response of Gardenia to purple soil drought stress,hoping to provide a reference for the selection of plants for vegetation restoration in purple soil regions.[Methods]The pot-weighing water control method was used to apply different degrees of drought stress to Gardenia seedlings in purple soil,and the effects of drought stress on the electrical conductivity,chlorophyll content,leaf morphology and structure of Gardenia leaves were explored.[Results]The leaf electrical conductivity increased with the increase of drought stress intensity,and the leaf electrical conductivity under severe drought stress increased by 59.93%compared with the control;the chlorophyll content of Gardenia showed a single-peak changing trend that increased and then decreased with the development of drought stress,and it was the highest in each stress stage under severe drought stress;the leaf thickness,palisade tissue thickness and sponge tissue thickness of Gardenia were reduced with the stress degree increasing,and showed the largest decreases under severe stress;the stomatal length,stomatal width and stomatal opening of Gardenia gradually decreased with the increase of stress,while the stomatal density gradually increased.[Conclusions]This study provides a technical and resource basis for vegetation restoration in purple soil.Yan YANG Lei LI Jie TANG Yuxi TANG Yongjin LI Mengrong LUO 2021Agricultural Biotechnology2021,10,5:1
14CA II, a potential biomarker by proteomic analysis, exerts significantinhibitory effect on the growth of colorectal cancer cells显示文摘Rui Zhou Wenjun Huang Yuqin Yao Yuxi Wang Ziqiang Li Bin Shao Jian Zhong Minghai Tang Shufang Liang Xia Zhao Aiping Tong Jinliang Yang 2013International Journal of Oncology2013,,2:1
15Evaluation and structural analysis of the functions of the Tibetan Plateau National Park Cluster显示文摘National parks are useful entities for looking at coordinated efforts to improve the Tibetan Plateau’s function as an ecological safety barrier and the region’s green development.Research on the characteristics of the function structures of the Tibetan Plateau’s national parks is vital to promoting their systematic and coordinated development.This paper combines the pressure-state-response model,the rank-size rule and a coupling and coordination model to identify and evaluate the functions of national parks on the Tibetan Plateau and to analyze the categories,hierarchy and structures behind those functions.The results indicate the following:(1)The Tibetan Plateau National Park Cluster needs to maintain internal and external relations.Internally it needs to rationally allocate resources between ecological protection,recreation and community development,and externally it needs to promote its role as an ecological security barrier and promote regional green development by rationally ranking and organizing the individual national parks,so as to handle their co-evolution of functions at multiple scales.(2)Ecological protection,recreation and community development are the most prominent functions of the Tibetan Plateau National Park Cluster,but there is scope to develop their scientific research and education functions.The Zipf index shows that their multi-functional level conforms with the rank-size rule,indicating balanced development.Individual national parks need to strengthen their optimal functions according to their characteristic localization.(3)The degree of coupling between the functions of the Tibetan Plateau National Park Cluster is 0.7809,and the degree of coordination is 0.6227,which indicates a very strong coupling and moderate coordination.The coupling strength and degree of coordination between the multiple functions vary greatly among the individual national parks,which reflects their different function structures.There are four function structure types:fully coordinated,optimally developed,moderately developed and moderately underdeveloped.This study contributes to research on evaluating the functions of national park clusters and analyzing their structures,and it serves as a reference on optimizing and sustainably developing the Tibetan Plateau National Park Cluster.CHEN Dongjun ZHONG Linsheng FAN Jie YU Hu YANG Ding ZENG Yuxi 2022Journal of Geographical Sciences2022,32,5:1
16Mesoporous cobalt monoxide-supported platinum nanoparticles:Superior catalysts for the oxidative removal of benzene显示文摘Mesoporous Co3 O4(meso-Co3 O4)-supported Pt(0.53 wt.%Pt/meso-Co304)was synthesized via the KIT-6-templating and polyvinyl alcohol(PVA)-assisted reduction routes.Mesoporous CoO(meso-CoO)was fabricated through in situ reduction of meso-Co304 with glycerol,and the 0.18-0.69 wt.%Pt/meso-CoO samples were generated by the PVA-assisted reduction method.Meso-Co3 O4 and meso-CoO were of cubic crystal structure and the Pt nanoparticles(NPs)with a uniform size of ca.2 nm were well distributed on the mesoCo3 O4 or meso-CoO surface.The 0.56 wt%Pt/meso-CoO(0.56 Pt/meso-CoO)sample performed the best in benzene combustion(T50%=156℃and T90%=186℃at a space velocity of 80,000 mL/(g h)).Introducing water vapor or C02 with a certain concentration led to partial deactivation of 0.56 Pt/meso-CoO and such a deactivation was reversible.We think that the superior catalytic activity of 0.56 Pt/meso-CoO was intimately related to its good oxygen activation and benzene adsorption ability.Jun Yang Yutong Xue Yuxi Liu Jiguang Deng Xiyun Jiang Huan Chen Hongxing Dai 2020Journal of Environmental Sciences2020,32,4:1
17显示文摘Liu Yuxi Yang Jing Zhao Ziqi 2012Journal of Colloid andInterface Science2012,3791,:1
18Characterization of sewage sludge-derived biochars from different feedstocks and pyrolysis temperatures显示文摘Huanliang Lu Weihua Zhang Shizhong Wang Luwen Zhuang Yuxi Yang Rongliang Qiu 2013Journal of Analytical and Applied Pyrolysis2013,,:1
19Isoliquiritigenin inhibits the growth of multiple myeloma via blocking IL-6 signaling显示文摘Xiangzheng Chen Yangping Wu Yangfu Jiang Yan Zhou Yuxi Wang Yuqin Yao Cheng Yi Lantu Gou Jinliang Yang 2012Journal of Molecular Medicine2012,,11:1
20A virus-induced conformational switch of STAT1-STAT2 dimers boosts antiviral defenses显示文摘Type I interferons(IFN-)protect us from viral infections.Signal transducer and activator of transcription 2(STAT2)is a key component of interferon-stimulated gene factor 3(ISGF3),which drives gene expression in response to IFN-I.Using electron microscopy,we found that,in naive cells,U-STAT2,lacking the activating tyrosine phosphorylation,forms a heterodimer with U-STAT1 in an inactive,anti-parallel conformation.A novel phosphorylation of STAT2 on T404 promotes IFN-I signaling by disrupting the U-STAT1-U-STAT2 dimer,facilitating the tyrosine phosphorylation of STATs 1 and 2 and enhancing the DNA-binding ability of ISGF3.IKK-ε,activated by virus infection,phosphorylates T404 directly.Mice with a T-A mutation at the corresponding residue(T403)are highly susceptible to virus infections.We conclude that T404 phosphorylation drives a critical conformational switch that,by boosting the response to IFN-I in infected cells,enables a swift and efficient antiviral defense.Yuxin Wang Qiaoling Song Wei Huang Yuxi Lin Xin Wang Chenyao Wang Belinda Willard Chenyang Zhao Jing Nan Elise Holvey-Bates Zhuoya Wang Derek Taylor Jinbo Yang George RStark 2021Cell Research2021,31,2:1
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