维普中文期刊产品整合服务
51篇 您的检索式:作者名="Shaohua LUO"
    题名 作者 年代 出处 被引量
1Timing of Uranium Mineralization and Geological Implications of Shazijiang Granite-Hosted Uranium Deposit in Guangxi, South China: New Constraint from Chemical U-Pb Age显示文摘Miaoershan (MES ) 铀矿石地是在中国的最重要的铀来源,之一和许多另外的招待花岗石的铀存款在华南招待最大的 Chanziping carbonaceous-siliceous-pelitic 岩石类型铀存款。Shazijiang (SZJ ) 铀存款是 MES 铀矿石地里的代表性的招待花岗石的铀存款之一,位于 Ziyuan, Guangxi 省,华南。在 SZJ 存款的铀矿化作用主要与空间地在这个区域与 mafic 女同性恋被联系的石英和方解石静脉作为沥青铀矿发生。热水的改变包括 silicification,碳酸饱和和 hematitization。新沥青铀矿化学药品 U-Pb 地球年代学和 petrographic 证据提供预定限制和新卓见进 SZJ 铀存款的形成。第一铀矿化作用上演的结果表演在 97.5 湯漠 ? 桴 ? 敚慤杮愠摮 ? 潵畢慳瀠牥摩瑯瑩獥椠 ? 潣獮獩整瑮眠瑩 ? 潢桴愠祢獳污愠摮猠'T 畤瑣潩 ?Jincheng Luo Ruizhong Hu Shaohua Shi 2015Journal of Earth Science2015,26,6:21
2Effects of Biochar and Super Absorbent Polymer on Substrate Properties and Water Spinach Growth显示文摘Most previous researches have focused on biochar application in agricultural soils; however, limited information is available concerning the effects of biochar amendment on greenhouse substrate properties. A greenhouse experiment was conducted to investigate effects of wheat straw biochar(0–160 m L L-1) and super absorbent polymer(SAP, 0.8 g L-1) on physical and chemical properties of a substrate based on spent pig litter compost and the growth of water spinach(Ipomoea aquatica Forsk). Total porosity, water-holding capacity, p H and electrical conductivity(EC) of the substrate significantly increased with increasing biochar rates, especially in the substrate without SAP. The values of p H and EC were significantly lower in the substrate with SAP than those without SAP at the high biochar application rates(100–160 m L L-1). The germination rates of water spinach decreased with increasing biochar rates when biochar was added alone(76.9%–83.7%), whereas the rates increased to 83.6%–85.8% when biochar was added in combination with SAP. Growth parameters of water spinach and nutrient uptake by shoots and roots increased with increasing biochar rates and reached the maximum values at the biochar rate of 100 m L L-1. There were significant cubic relationships between the uptake of nutrients(N, P, and K) and biochar rates, both with and without SAP addition. In order to avoid negative effects on plant growth,the biochar application rate should be controlled at an optimal level(100 m L L-1). The SAP addition not only enhanced the positive effects of biochar application on the properties of the substrate, but also inhibited the excessive rise of p H and EC following biochar additions, which led to better plant growth and enhanced nutrient uptakes by water spinach.FAN Ruqin LUO Jia YAN Shaohua ZHOU Yunlai ZHANG Zhenhua 2015Pedosphere2015,25,5:15
3Molecular behaviors in thin film lubrication——Part one: Film formation for different polarities of molecules显示文摘There are three unsolved problems in thin film lubrication(TFL) since it was proposed 20 years ago, i.e., the determination of the type of molecules that can enter the contact region efficiently during sliding, the orientation of molecules in the contact region, and the effect of solid surfaces on the liquid molecular orientation in TFL. In order to answer the first two questions, an in situ measurement system comprising a self-designed Raman microscopy and relative optical interference intensity(ROⅡ) system was set up to study the molecular behaviors. A variety of binary mixtures were used as lubricants in the test, and the concentration distribution profile and orientation of the additive molecules in TFL were characterized. The molecular behavior was determined via a combination of shearing, confinement, and surface adsorption. Furthermore, the difference in molecular polarity resulted in different competing effect of surface adsorption and intermolecular interaction, the influence of which on molecular behavior was discussed. Polar additive molecules interacted with the steel surface and exhibited an enrichment effect in the Hertz contact region when added into a nonpolar base oil. No enrichment effect was observed for nonpolar molecules that were added into the nonpolar base oil and polar molecules added into polar base oil. The enrichment of additive molecules enhanced the film-forming ability of the lubricant and resulted in a reduction in the friction coefficient of up to 61%. The orderly arrangement of the additive molecules was another reason for the friction-reducing. A binary multilayer model was proposed to illuminate the molecular behavior in the TFL, and the model was supported by contrary experiment results in elastohydrodynamic lubrication. This research may aid in understanding the nanoscale lubrication mechanism in TFL and the development of novel liquid lubricants.Shaohua ZHANG Yijun QIAO Yuhong LIU Liran MA Jianbin LUO 2019Friction2019,7,4:10
4Overview of China's Antarctic research progress 1984–2016显示文摘It is more than 30 years since the first Chinese National Antarctic Research Expedition(CHINARE) landed in Antarctica in 1984, representing China's initiation in polar research. This review briefly summarizes the Chinese Antarctic scientific research and output accomplished over the past 30 years. The developments and progress in Antarctic research and the enhancement of international scientific cooperation achieved through the implementation of the CHINARE program have been remarkable. Since the 1980 s, four permanent Chinese Antarctic research stations have been established successively and 33 CHINAREs have been completed. The research results have been derived from a series of spatiotemporal observations in association with various projects and multidisciplinary studies in the fields of oceanography, glaciology, geology, geophysics, geochemistry, atmospheric science, upper atmospheric physics, Antarctic astronomy, biology and ecology, human medicine, polar environment observation, and polar engineering.CHEN Liqi LIU Xiaohan BIAN Lingen CHEN Bo HUANG Hongliang HU Hongqiao LUO Wei SHI Guitao SHI Jiuxin XU Chengli YANG Guang ZHAO Yue ZHANG Shaohua 2017Advances in Polar Science2017,28,3:9
5Chaos and Nonlinear Feedback Control of the Arch Micro-Electro-Mechanical System显示文摘This paper addresses a nonlinear feedback control problem for the chaotic arch micro- electro-mechanical system with unknown parameters,immeasurable states and partial state-constraint subjected to the distributed electrostatic actuation.To reflect inherent properties and design controller, the phase diagrams,bifurcation diagram and Poincare section are presented to investigate the nonlinear dynamics.The authors employ a symmetric barrier Lyapunov function to prevent violation of constraint when the arch micro-electro-mechanical system faces some limits.An RBF neural network system integrating with an update law is adopted to estimate unknown function with arbitrarily small error. To eliminate chaotic oscillation,a neuro-adaptive backstepping control scheme fused with an extended state tracking differentiator and an observer is constructed to lower requirements on measured states and precise system model.Besides,introducing an extended state tracking differentiator avoids repeated derivative for the virtual control signal associated with conventional backstepping.Finally,simulation results are presented to illustrate feasibility of the proposed scheme.LUO Shaohua LI Shaobo TAJADDODIANFAR Farid 2018Journal of Systems Science & Complexity2018,31,6:3
6General synthesis of hollow mesoporous conducting polymers by dual-colloid interface co-assembly for high-energy-density micro-supercapacitors显示文摘Rational design and precise regulation over the morphology, structure, and pore size of functional conducting mesoporous polymers with enriched active sites and shorten electron–ion transport pathway are extremely important for developing high-performance micro-supercapacitors (MSCs), but still remain a great challenge. Herein, a general dual-colloid interface co-assembly strategy is proposed to fabricate hollow mesoporous polypyrrole nano-bowls (mPPy-nbs) for high-energy-density solid-state planar MSCs. By simply adjusting the size of block copolymer micelles, the diameter of polystyrene nanospheres and the amount of pyrrole monomer, mesopore size of the shell, void and shell thickness of mPPy-nbs can be simultaneously controlled. Importantly, this strategy can be further utilized to synthesize other hollow mesoporous polymers, including poly(tris(4-aminophenyl)amine), poly(1,3,5-triaminobenzene) and their copolymers, demonstrative of excellent universality. The structurally optimized mPPy-nb exhibits high specific surface area of 122 m^(2) g^(−1)and large capacitance of 225 F g^(−1) at 1 mV s^(−1). Furthermore, the MSCs assembled by mPPy-nbs deliver impressive volumetric capacitance of 90 F cm^(−3) and energy density of 2.0 mWh cm^(−3), superior to the most reported polymers-based MSCs. Also, the fabricated MSCs present excellent flexibility with almost no capacitance decay under varying bending states, and robust serial/parallel self-integration for boosting voltage and capacitance output. Therefore, this work will inspire the new design of mesoporous conducting polymer materials toward high-performance microscale supercapacitive devices.Jing Cui Fei-Fei Xing Hao Luo Jie-Qiong Qin Yan Li Yonghui Zhong Facai Wei Jianwei Fu Chengbin Jing Jiangong Cheng Zhong-Shuai Wu Shaohua Liu 2021Journal of Energy Chemistry2021,30,11:3
7On the source of the quasi-Carrington Rotation periodic magnetic variations on the Martian surface: InSight observations and modeling显示文摘In a recent paper(Luo H et al.,2022),we found that the peak amplitudes of diurnal magnetic variations,measured during martian days(sols)at the InSight landing site,exhibited quasi Carrington-Rotation(qCR)periods at higher eigenmodes of the natural orthogonal components(NOC);these results were based on~664 sols of magnetic field measurements.However,the source of these periodic variations is still unknown.In this paper we introduce the neutral-wind driven ionospheric dynamo current model(e.g.,Lillis et al.,2019)to investigate the source.Four candidates-the draped IMF,electron density/plasma density,the neutral densities,and the electron temperature in the ionosphere with artificial qCR periodicity,are applied in the modeling to find the main factor likely to be causing the observed surface magnetic field variations that exhibit the same qCR periods.Results show that the electron density/plasma density,which controls the total conductivity in the dynamo region,appears to account for the greatest part of the surface qCR variations;its contribution reaches about 67.6%.The draped IMF,the neutral densities,and the electron temperature account,respectively,for only about 12.9%,10.3%,and 9.2%of the variations.Our study implies that the qCR magnetic variations on the Martian surface are due primarily to variations of the dynamo currents caused by the electron density variations.We suggest also that the timevarying fields with the qCR period could be used to probe the Martian interior's electrical conductivity structure to a depth of at least 700 km.Hao Luo AiMin Du ShaoHua Zhang YaSong Ge Ying Zhang ShuQuan Sun Lin Zhao Lin Tian SongYan Li 2022Earth and Planetary Physics2022,6,3:2
8A novel trajectory planning strategy for aircraft emergency landing using Gauss pseudospectral method显示文摘To improve the survivability during an emergency situation, an algorithm for aircraft forced landing trajectory planning is proposed. The method integrates damaged aircraft modelling and trajectory planning into an optimal control framework. In order to deal with the complex aircraft flight dynamics, a solving strategy based on Gauss pseudospetral method(GPM) is presented.A 3-DOF nonlinear mass-point model taking into account the wind is developed to approximate the aircraft flight dynamics after loss of thrust. The solution minimizes the forced landing duration, with respect to the constraints that translate the changed dynamics, flight envelope limitation and operational safety requirements. The GPM is used to convert the trajectory planning problem to a nonlinear programming problem(NLP), which is solved by sequential quadratic programming algorithm. Simulation results show that the proposed algorithm can generate the minimum-time forced landing trajectory in event of engine-out with high efficiency and precision.Shaohua MENG Jinwu XIANG Zhangping LUO Yiru REN Nanjian ZHUANG 2014Control Theory and Technology2014,12,4:2
9Synthesis and performance of carbon-modified LiFePO_4 using an in situ PVA pyrolysis procedure显示文摘LiFePO4/carbon composite cathode material was prepared by granulating and subsequent pyrolysis processing in N2 at- mosphere with polyvinyl alcohol (PVA) as the carbon source. The influences of carbon content on the microstructure and battery performance were investigated. Single LiFePO4 phase and amorphous carbon can be found in the products. A special mi- cro-morphology of the optimum sample was observed. The discharge capacity of the cell with the optimum cathode was 135 mAh·g?1, close to the charge capacity of 153 mAh·g?1 at 17 mA·g?1. The influence of ambient temperature on the cell capacity was investigated. The temperature dependence of its electrochemical characteristic was evaluated by using AC impedance spectroscopy. A new equivalent circuit based on the charge and mass transfer control process in an electrode was proposed to fit the obtained AC im- pedance spectra. The tendency of every element in the equivalent circuit was used to interpret the temperature dependence of the ca- pacity of the optimum cathode.Shaohua Luo Zilong Tang Junbiao Lu Linfeng Hu Zhongtai Zhang 2007Journal of University of Science and Technology Beijing2007,14,6:2
10Adjunctive sepsis therapy with aminophylline(STAP):a randomized controlled trial显示文摘Background:Sepsis is a serious disease caused by infection.Aminophylline has anti-asthma and anti-inflammatory effects.We aimed to explore the safety and effect of aminophylline in sepsis.Methods:We conducted a clinical randomized controlled trial involving 100 patients diagnosed with sepsis within 48 h after intensive care unit(ICU)admission in two sites.All patients were randomized in a 1:1 ratio to receive standard therapy with or without aminophylline.The primary clinical outcome was all-cause mortality at 28 days.Results:From September 27,2018 to February 12,2020,we screened 277 septic patients and eventually enrolled 100 patients,with 50 assigned to the aminophylline group and 50 to the usual-care group.At 28 days,7 of 50 patients(14.0%)in the aminophylline group had died,compared with 16 of 50(32.0%)in the usual-care group(P=0.032).Cox regression showed that the aminophylline group had a lower hazard of death(hazard ratio=0.312,95%confidence interval:0.129–0.753).Compared with the usual-care group,patients in the aminophylline group had a longer survival time(P=0.039 by the log-rank test).The effects of aminophylline on vasopressor dose,oxygenation index,and sequential organ failure assessment score were timedependent with treatment.There were no significant differences in total hospitalization days,ICU hospitalization days,and rates of serious adverse events(all P>0.05).No adverse events were observed in the trial.Conclusions:Aminophylline as an adjunct therapy could significantly reduce the risk of death and prolong the survival time of patients with sepsis.Trial registration:ChiCTR.org.cn,ChiCTR1800019173.Ruifang Zhang Huan Liu Dongmei Dai Xianfei Ding Dong Wang Yan Wang Xuexiu Shi Shuguang Zhang Xiaoguang Duan Haixu Wang Yonggang Luo Shaohua Liu Bing Han Xiaojuan Zhang Yu Fang Jing Yang Wangbin Xu Tongwen Sun 2022Chinese Medical Journal2022,135,23:2
11A durable Ni/La-Y catalyst for efficient hydrogenation of γ-valerolactone into pentanoic biofuels显示文摘Zeolite-supported metal catalysts containing hydrogenation centers and acid sites are promising in the chemoselective hydrogenation of biomass platform molecules into value-added chemicals and fuels.The primary challenge of employing such bifunctional catalysts for biomass conversion lies in catalyst stability in the liquid phase under harsh conditions. Herein, we have prepared a Ni/La-Y nanocatalyst via an improved wet impregnation method. Compared with Ni nanoparticles on H-Y, La addition shows a significantly enhanced stability and performance in the continuous liquid-phase hydrogenation of γ-valerolactone(GVL) into ethyl pentanoate(EP) at 200 ℃ for 1000 h. Complementary characterization studies reveal that La addition in the metal/zeolite catalyst not only efficiently modulates the acid property of the zeolite to alleviate coke formation, but also suppresses zeolite dealumination and metal agglomeration and leaching upon catalysis over a 1000 h period. These findings provide an efficient approach for improving the stability of zeolite-supported bifunctional catalysts, leading to potential application in hydrogen-assisted biomass valorization under the liquid-phase conditions.Jiang He Lu Lin Meng Liu Caixia Miao Zhijie Wu Rui Chen Shaohua Chen Tiehong Chen Yang Su Tao Zhang Wenhao Luo 2022Journal of Energy Chemistry2022,31,7:1
12Isolation and characterization of a fungus able to degrade pyrethroids and 3-phenoxybenzaldehyde显示文摘Shaohua Chen Qiongbo Hu Meiying Hu Jianjun Luo Qunfang Weng Kaiping Lai 2011Bioresource Technology2011,,17:1
13Low - temperature combustion synthesis and character-ization of nanosized tetragonal barium titanate powders显示文摘Luo Shaohua Tang Zilong Yao Weihua 2003Microelectronic Engineering2003,66,:1
14Low-temperature combustion synthesis and character-ization of nanosized tetragonal barium titanate powders显示文摘Luo Shaohua Tang Zilong Yao Weihua 2003Microelectronic Engineering2003,,66:1
15Induction of autophagy enhances porcine reproductive and respiratory syndrome virus replication显示文摘Quangang Chen Liurong Fang Dang Wang Shaohua Wang Ping Li Mao Li Rui Luo Huanchun Chen Shaobo Xiao 2011Virus Research2011,,2:1
16Low-temperature combustion synthesis and characterization of nanosized tetragonal barium titanate powders显示文摘Luo Shaohua 2003Microelectronic Eng2003,66,14:1
17Low- temperature combustion synthesis and character-ization of nanosized tetragonal barium titanate powders显示文摘Luo Shaohua Tang Zilong Yao Weihua 2003Microelectronic Engineering2003,66,:1
18Study on separation technology of Pr and Nd in D 2 EHPA-HCl-LA coordination extraction system显示文摘Shaohua YIN Wenyuan WU Bo ZHANG Fengyun ZHANG Yao LUO Shiwei LI Xue BIAN 2010Journal of Rare Earths2010,,:1
19Transmission of 200 Tb/s (375 × 3 × 178.125 Gb/s) PDM-DFTS-OFDM-32QAM super channel over lkm FMF显示文摘Ming LUO Qi MO Xiang LI Rong HU Ying QIU Cai LI Zhijian LIU Wu LIU Huang YU Wei DU Jing XU Zhixue HE Qi YANG Shaohua YU 2015Frontiers of Optoelectronics2015,8,4:1
20Hollow Bio-derived Polymer Nanospheres with Ordered Mesopores for Sodium-Ion Battery显示文摘Bio-inspired hierarchical self-assembly provides elegant and powerful bottom-up strategies for the creation of complex materials.However,the current self-assembly approaches for natural bio-compounds often result in materials with limited diversity and complexity in architecture as well as microstructure.Here,we develop a novel coordination polymerization-driven hierarchical assembly of micelle strategy,using phytic acid-based natural compounds as an example,for the spatially controlled fabrication of metal coordination bio-derived polymers.The resultant ferric phytate polymer nanospheres feature hollow architecture,ordered meso-channels of^12 nm,high surface area of 401 m2 g−1,and large pore volume of 0.53 cm3 g−1.As an advanced anode material,this bio-derivative polymer delivers a remarkable reversible capacity of 540 mAh g−1 at 50 mA g−1,good rate capability,and cycling stability for sodium-ion batteries.This study holds great potential of the design of new complex bio-materials with supramolecular chemistry.Yan Ai Yuxiu You Facai Wei Xiaolin Jiang Zhuolei Han Jing Cui Hao Luo Yucen Li Zhixin Xu Shunqi Xu Jun Yang Qinye Bao Chengbin Jing Jianwei Fu Jiangong Cheng Shaohua Liu 2020Nano-Micro Letters2020,12,3:1
返回顶部 每页显示:
共3页 首页 上一页 第1页 下一页 末页 /3 跳转

网站首页 | 关于我们 | 联系我们 | 产品服务 | 客服中心 | 广告服务 | 版权声明 | 网站联盟 | 友情链接 | 售卡网点

版权所有© 渝B2-20050021-1 渝公网安备 50019002500403号 违法和不良信息举报中心

互联网出版许可证 新出网证(渝)字10号 全国400电话 - 免长途话费