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24篇 您的检索式:作者名="Quanyu"
    题名 作者 年代 出处 被引量
1欠定和不确定条件下胞内代谢通量的最大熵原理估算显示文摘在代谢工程和系统生物学领域,计算机模拟比以往更为有效的应用于生物过程的分析和优化。胞内代谢通量可以用代谢通量分析和基元模式分析来估算。由于测定数据的不足和误差,以及基元途径的冗余,经常很难得到准确的代谢通量分布数据。本研究提出一种基于最大熵原理的算法来计算基元模式系数。欠定和不确定条件下,通过胞外代谢通量数据估算胞内代谢通量分布。为了检验算法的可行性,对杂交瘤细胞、枯草芽孢杆菌和大肠杆菌的胞内代谢通量分布做了估算。本研究提出的基于最大熵原理的优化算法避免了对细胞状态的生理学假设。与其他目标函数相比,可以更为可靠和可行的估算胞内代谢通量分布。Quanyu Zhao Hiroyuki Kurata 2008生物工程学报2008,24,12:3
2Multifunction switching by a flat structurally tunable acoustic metasurface for transmitted waves显示文摘In this paper a flat structurally tunable acoustic metasurface is constructed based on the helical unit cell. The length of the acoustic channel can be tuned by the screw-in depth of the helix. Accordingly, the wave phase for the transmitted acoustic wave can be tuned and the wavefront can be manipulated. Then multifunctions such as anomalous refraction, point focusing, beam focusing and self-bending can be realized and switched just by screwing in or out the helixes. At the same time, the broadband operating frequency is also realized. The experiments for anomalous refraction and point focusing are also performed, and the results show that the designed metasurface is effective. The present studies have important applications in dynamic manipulation of acoustic waves by metasurfaces.ALi Chen QuanYu Tang HaoYu Wang ShengDong Zhao YueSheng Wang 2020Science China(Physics,Mechanics & Astronomy)2020,63,4:2
3Effect of aqueous extract of Sanweitanxiang powder on calcium homeostasis protein expression in ischemic-reperfusion injury rat heart显示文摘OBJECTIVE: To investigate the underlying mechanism of reduced myocardial ischemia-reperfusion (I/R) injury in rats using the traditionalTibetan medicine Sanweitanxiang powder (SWTX). METHODS: Rats were randomly divided into six groups (n=10) as follows: (a) propranolol dinitrate control group, given propranolol dinitrate 0.02 g/kg for 10 days before I/R, (b) SWTX with a high dose group, given SWTX 1.5 g/kg for 10 days before I/R, (c) SWTX with a medium dose group, given SWTX 1.25 g/kg for 10 days before I/R, (d) sham group (Sham), in which the rat heart was exposed by pericardiotomy but without I/R, (e) SWTX with a low dose group, given SWTX 1.0 g/kg for 10 days before I/R, and (f) I/R injury group. Rats were intragastrically pretreated with propranolol dinitrate orSWTX. After that, the operation to cause ischemia and reperfusion was conducted.The histopathologic changes of rat hearts were observed by hematoxylin and eosin staining and transmission electron microscopy. Ca2+ homeostasis protein expression was determined by western blot. RESULTS: After SWTX pretreatment, the development of ultrastructural pathological changes from IR injury was attenuated. A decrease in the expression of B-cell lymphoma 2 associated X protein, and an increase in the expression of B-cell lymphoma 2 were observed. An increased activation of extracellular signal regulated kinases were found. Compared with the sham group, the expression of sarcoplasmic reticulum calcium-ATPase, phospholamban, and calsequestrin were all up-regulated after pretreatment with SWTX. CONCLUSION: The protective mechanism of SWTX pretreatment on myocardial I/R injury might be related to its effect on maintaining the balance of calcium homeostasis in rat heart.Mei Yang Shuna Zhang Shicun Ren Jinjun Wang Haixia Yun Sheng Yong Dejun Zhang Quanyu Yang Yiying Kou Dianxiang Lu Rili Ge 2013Journal of Traditional Chinese Medicine2013,33,3:2
4Phytotoxic Substances in Root Exudutes of Cucumber显示文摘Jing Quanyu Yoshuhisa Matsui 1994Journal of Chemical Ecology1994,20,1:1
5显示文摘HEMiao QUANYu LIJian-hua etal(何苗 全宇 李建华 等) 2006中国卫生统计2006,23,4:1
6An investigation of deterioration of ar-chaeological iron显示文摘Quanyu Wang 0,,52:1
7Epide- miological study of chronic dermal ulcers in China显示文摘Fu Xiaobing Sheng Zhiyong Cherry GW Li Quanyue 1998Wound Rep Reg1998,6,1:1
8Biopotentials of marine sponges from China oceans: Past and future显示文摘Zhang Wei Xue Song Zhao Quanyu 2003Biomolecular Engineering2003,20,:1
9Drainage evolution in intermontane basins at the Qinling-Daba Mountains显示文摘River capture is of great significance to landform evolution and hominine migration.In the Qinling-Daba Mountains,there is a viewpoint that Jialing River captured Hanjiang River,but this is still controversial.In this paper,we discuss the drainage evolution processes in intermountain basins at the Qinling-Daba Mountains based on a combination of detrital zircon UPb geochronology and geomorphic indexes.We suggest that the Hanjiang River gradually captured the Jialing River from east to west,accompanied by the evolution of the ancient Yangtze River.In terms of geomorphic evidences,wide valleys did not match with discharge,and a series of wind gaps developed in the Shiquan-Ankang basin.In addition,the valley shapes and width-toheight ratios(Vf)indicate two possible rapid incisions.The hypsometric integrals(HI)reflect that the landform gradually changes from the old stage to the youth stage from west to east.Theχvalues show that the drainage divide is moving to the side of the Yuehe River,and the Yuehe River is gradually shrinking.According to the sedimentary records,the zircon U-Pb age distributions indicate the provenance change.The high-altitude terraces show three age peaks(200–250,400–505,and 700–900 Ma),with the dominant Indosinian age peak(200–250 Ma),while the modern fluvial sediments only show a single peak of Jinning(700–900 Ma).These data show that there are two major river captures:(1)The ancient Hanjiang River cut through the regional compression ridge,and then captured the Hanzhong Basin river system(a part of the ancient Jialing river system)from east to west,and(2)The southern tributary captured the trunk with the uplift of the divide in the Shiquan-Ankang Basin,forming the modern drainage pattern in the upper Hanjiang River.The activities of the regional strike-slip fault,and the associated compression uplift played a key role in the river captures,the drainage evolution,and related landforms in the Shiquan-Ankang basin.In addition,it is shown that the evolution of the upper tributary basins lagged behind the response of the trunk channel to the tectonic activities and river captures.The interconnected wide valleys caused by river capture may have provided convenient geomorphological conditions for human migration into the Qinling-Daba Mountains along those river valleys.Wanting XIE Xianyan WANG Hanzhi ZHANG Quanyu LIU Shejiang WANG Huayu LU 2021Science China Earth Sciences2021,64,11:1
10Arthroscopic Ankle Arthrodesis with Intra-Articular Distraction显示文摘Hyong Nyun Kim June Young Jeon Kyu Cheol Noh Hong Kyun Kim Quanyu Dong Yong Wook Park 2014The Journal of Foot and Ankle Surgery2014,,:1
11显示文摘YUHong-Tao(于洪涛) QUANYu(全燮) Prog Chem0,,:1
12GENERALIZED PRECONDITIONED HERMITIAN AND SKEW-HERMITIAN SPLITTING METHODS FOR NON-HERMITIAN POSITIVE-DEFINITE LINEAR SYSTEMS显示文摘在切开的这份报纸,概括 preconditioned Hermitian 和 skew-Hermitian (GPHSS ) 积极明确的矩阵被学习的为 non-Hermitian 的重复方法,它盖住切开的标准 Hermitian 和 skew-Hermitian (HSS ) 重复并且另外许多存在变体。理论分析给上面的界限为光谱重复矩阵的半径。舞会实际观点,我们分析了并且实现切开的不精确的概括 preconditioned Hermitian 和 skew-Hermitian (IGPHSS ) 重复,它作为它的内部过程采用 Krylov subspace 方法。从 GPHSS 和 IGPHSS 重复与标准 HSS 重复和 AHSS 重复有效、竞争的三维的传送对流散开方程表演的数字实验。Junfeng Yin Quanyu Dou 2012Journal of Computational Mathematics2012,30,4:1
13Yearly variation in character istics and health risk of polycyclic aromatic hydrocarbons and nitro-PAHs in urban shanghai from 2010-2018显示文摘This study encompassed the regular observation of nine polycyclic aromatic hydrocarbons(PAHs)and three nitro-PAHs(NPAHs)in particulate matter(PM)in Shanghai in summer and winter from 2010 to 2018.The results showed that the mean concentrations of∑PAHs in summer decreased by 24.7%in 2013 and 18.1%in 2017 but increased by 10.2%in 2015 compared to the data in 2010.However,the mean concentrations of∑PAHs in winter decreased by 39.7%from 2010(12.8±4.55 ng/m^3)to 2018(7.72±3.33 ng/m^3),and the mean concentrations of 1-nitropyrene in winter decreased by 79.0%from 2010(42.3±16.1 pg/m^3)to 2018(8.90±2.09 pg/m^3).Correlation analysis with meteorological conditions revealed that the PAH and NPAH concentrations were both influenced by ambient temperature.The diagnostic ratios of PAHs and factor analysis showed that they were mainly affected by traffic emissions with some coal and/or biomass combustion.The ratio of 2-nitrofluoranthene to 2-nitropyrene was near 10,which indicated that the OH radical-initiated reaction was the main pathway leading to their secondary formation.Moreover,backward trajectories revealed different air mass routes in each sampling period,indicating a high possibility of source effects from the northern area in winter in addition to local and surrounding influences.Meanwhile,the mean total benzo[a]pyrene-equivalent concentrations in Shanghai in winter decreased by 50.8%from 2010(1860±645 pg/m^3)to 2018(916±363 pg/m^3).These results indicated the positive effects of the various policies and regulations issued by Chinese authorities.Lu Yang Xuan Zhang Wanli Xing Quanyu Zhou Lulu Zhang Qing Wu Zhijun Zhou Renjie Chen Akira Toriba Kazuichi Hayakawa Ning Tang 2021Journal of Environmental Sciences2021,33,1:1
14Fast ion diffusion alloy layer facilitating 3D mesh substrate for dendrite-free zinc-ion hybrid capacitors显示文摘Although aqueous zinc ion hybrid capacitors have advantageous integration of batteries and supercapacitors,they still suffer from the inherent problems of dendrite growth and interfacial side reactions on Zn anodes.Herein,a universal fast zinc-ion diffusion layer on a three-dimensional(3 D)mesh structure model is demonstrated to effectively improve Zn plating/stripping reversibility.The fast ion diffusion alloy layer accelerates the Zn^(2+)migration in an orderly manner to homogenize Zn^(2+)flux and overcomes the defects of the commercial mesh substrate,effectively avoiding dendrite growth and side reactions.Consequently,the proof-of-concept silver-zinc alloy modified stainless steel mesh delivers superb reversibility with the high coulombic efficiency over 99.4%at 4 mA cm^(-2)after 1600 cycles and excellent reliability of over 830 h at 1 mA cm^(-2),Its feasibility is also evidenced in commercial zinc ion hybrid capacitors with activated carbon as the cathode.This work enriches the fundamental comprehension of fast zinc-ion diffusion layer combined with a 3 D substrate on the Zn deposition and opens a universal approach to design advanced host for Zn electrodes in zinc ion hybrid capacitors.Huaming Yu Quanyu Li Wen Liu Han Wang Xuyan Ni Qiwen Zhao Weifeng Wei Xiaobo Ji Yuejiao Chen Libao Chen 2022Journal of Energy Chemistry2022,31,10:0
15A novel function of CREG in metabolic disorders显示文摘Metabolic disorders are public health problems that require prevention and new efficient drugs for treatment.Cellular repressor of E1A-stimulated genes(CREG)is ubiquitously expressed in mature tissues and cells in mammals and plays a critical role in keeping cells or tissues in a mature,homeostatic state.Recently,CREG turns to be an important mediator in the development of metabolic disorders.Here in this review,we briefly discuss the structure and molecular regulation of CREG along with the therapeutic strategy to combat the metabolic disorders.Yang Li Xiaoxiang Tian Quanyu Zhang Chenghui Yan Yaling Han 2021Medical Review2021,1,1:0
16Theoretical Simulations of Ni-Like Laser Lines显示文摘Multi-configuration Dirac-Fock and configuration interaction calculations in the extensive average level version with the inclusion of the transverse(Breit)interaction and low orders quantum electrodynamics have been carried out for the wavelengths of five Ni-like laser lines.The ab initio results have been adjusted along the iso-electronic sequence and predict the wavelengths.The predicted results have been compared and agree with available experimental values and may serve as road sign for experimentalists.CHEN Guoxin FANG Quanyu CAI Wei 1994Chinese Physics Letters1994,11,9:0
17A Study on the Wear Resistance of Nano-Material/E51显示文摘Epoxy resin modified by nanometric γ-alumina or multi-walled carbon nanotubes (MCNTs) was prepared with solution mixing method, and the wear resistance of the composite was studied. The results show that when an optimum amount of nanometric alumina or MCNTs is filled in epikote51 (E51), the wear resistance of the composite will increase. When 8 wt pct nanometric γ-alumina is filled in E51, the wear resistance of the composite increases to 230%. When 10% MCNTs is filled in E51, the wear resistance of the composite increases to 226%. When nanometric alumina is filled in, the wear resistance of modified epikote51 will increase as the cure temperature is heightened.Yan GAO Zhenjia WANG Quanyu MA Ge TANG Ji LIANG State Key Laboratory of Tribology, Department of Mechanical Engineering, Tsinghua University, Beijing 100084, China 2004Journal of Materials Science & Technology2004,20,3:0
18The Chromatic Point-spread Function of Weak Lensing Measurement in the Chinese Space Station Survey Telescope显示文摘Weak gravitational lensing is a powerful tool in modern cosmology.To accurately measure the weak lensing signal,one has to control the systematic bias on a small level.One of the most difficult problems is how to correct the smearing effect of the Point-Spread Function(PSF)on the shape of the galaxies.The chromaticity of PSF for a broad-band observation can lead to new subtle effects.Since the PSF is wavelength-dependent and the spectrum energy distributions between stars and galaxies are different,the effective PSF measured from the star images will be different from those that smear the galaxies.Such a bias is called color bias.We estimate it in the optical bands of the Chinese Space Station Survey Telescope from simulated PSFs,and show the dependence on the color and redshift of the galaxies.Moreover,due to the spatial variation of spectra over the galaxy image,another higher-order bias exists:color gradient bias.Our results show that both color bias and color gradient bias are generally below 0.1%in CSST.Only for small-size galaxies,one needs to be careful about the color gradient bias in the weak lensing analysis using CSST data.Quanyu Liu Xinzhong Er Chengliang Wei Dezi Liu Guoliang Li Zuhui Fan Xiaobo Li Zhang Ban Dan Yue 2023Research in Astronomy and Astrophysics2023,23,7:0
19Safety and efficacy of transcatheter arterial embolization for management of refractory hematuria of prostatic origin显示文摘Objective: To estimate the safety and efficacy of transcatheter arterial embolization(TAE) in the treatment of refractory hematuria of prostatic origin(RHPO).Methods: This retrospective study included 23 patients who underwent TAE for RHPO between May 2013 and August 2021. Technical and clinical success rates were calculated, and arteriogram findings and complications were detected.Results: Embolization was performed 24 times in 23 patients. Technical success was achieved in 24/24(100%)embolization procedures. Contrast agent extravasation was detected during 2 of the 24 angiographic procedures.Bilateral embolization was performed in 23(95.8%) of the 24 procedures. The clinical success rate was 21/23(91.3%), and hematuria stopped 1–4 days after TAE. No serious complications were observed.Conclusion: TAE is a safe and effective minimally invasive technique for treating patients with RHPO.Jinlong Zhang Quanyu Wang Hongwei Zhao Bing Yuan Xuedong Sun Yang Guan Zhuting Fang Maoqiang Wang 2022Journal of Interventional Medicine2022,5,2:0
20Efficient reduction ofβ-lactoglobulin allergenicity in milk using Clostridium tyrobutyricum Z816显示文摘Milk allergy is one of the most common food allergies,affecting 6%of young children,andβ-lactoglobulin(β-LG)is the main milk allergen.Clostridium tyrobutyricum Z816 was selected for the degradation ofβ-LG,which was successfully reduced by about 90%using permeabilized bacteria under the optimized conditions.The hydrolyzed peptides were identified by liquid chromatography-tandem mass spectrometry(LC-MS/MS)and analyzed by molecular modeling,which indicated that C.tyrobutyricum Z816 could effectively degrade the antigenic epitopes ofβ-LG.Finally,the concentration and digestibility ofβ-LG in actual samples was quantified using enzyme-linked immunosorbent assay(ELISA)and gastrointestinal digestion simulation experiments.The results showed more than 92%ofβ-LG in actual samples was hydrolyzed,and the gastric and total digestibility of whey protein isolate(WPI)was improved by 85.96%and 64.51%,respectively.Therefore,C.tyrobutyricum Z816 offers an effective method to degradeβ-LG and reduce the occurrence of milk allergies,which has great significance for the development of hypoallergenic dairy products.Qianru Zhao Yuwei Wang Zhengming Zhu Quanyu Zhao Liying Zhu Ling Jiang 2023Food Science and Human Wellness2023,12,3:0
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