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1Drawdown mechanism of light particles in baffled stirred tank for the KR desulphurization process显示文摘To improve the efficiency of the desulfurization process, the drawdown mechanism of light particles in stirred tank is studied in this paper. For both up and down pumping modes, the just drawdown speeds(Njd) of floating particles in transformative Kanbara Reactor(KR) are measured in one and four baffled stirred tanks experimentally. Then numerical simulations with standard k-ε model coupled with volume of fluid model(VOF) and discrete phase model(DPM) are conducted to analyze the flow field at the just drawdown speed Njd. The torques on the impeller obtained from experiments and simulations agree well with each other, which indicates the validity of our numerical simulations. Based on the simulations, three main drawdown mechanisms for floating particles, the axial circulation, turbulent fluctuation and largescale eddies, are analyzed. It's found that the axial circulation dominates the drawdown process at small submergence(S = 1/4 T and 1/3 T) and the large-scale eddies play a major role at large submergence(S = 2/3 T and 3/4 T). Besides, the turbulent fluctuation affects the drawdown process significantly for up pumping mode at small submergence(S = 1/4 T and 1/3 T) and for down pumping mode at large submergence(S = 2/3 T and 3/4 T). This paper helps to provide a more comprehensive understanding of the KR desulphurizer drawdown process in the baffled stirred tank.Meng Li Yangbo Tan Jianglong Sun De Xie Zeng Liu 2019Chinese Journal of Chemical Engineering2019,27,2:8
2A Tangential Wind Profile for Simulating Strong Tropical Cyclones with MM5显示文摘A new tangential wind profile for simulating strong tropical cyclones is put forward and planted into the NCAR- AFWA tropical cyclone bogussing scheme in MM5. The scheme for the new profile can make full use of the information from routine typhoon reports, including not only the maximum wind, but also the additional information of the wind speeds of 25.7 and 15.4 ms-1 and their corresponding radii, which are usually provided for strong cyclones. Thus, the new profile can be used to describe the outer structure of cyclones more accurately than by using the earlier scheme of MM5 in which on- ly the maximum wind speed is considered. Numerical experimental forecasts of two strong tropical cyclones are performed to examine the new profile. Results show that by using the new profile the prediction of both cyclones’ intensity can be obvi- ously improved, but the effects on the track prediction of the two cyclones are different. It seems that the new profile might be more suitable for strong cyclones with shifted tracks. However, the conclusion is drawn from only two typhoon cases, so more cases are needed to evaluate the new profile.GAOShanhong YANGBo WUZengmao 2005Journal of Ocean University of China2005,4,1:7
3NEW CLOSED-LOOP DRIVING CIRCUIT OF SILICON MICROMACHINED VIBRATORY GYROSCOPE显示文摘A new closed-loop driving scheme for the silicon micromachined vibratory gyroscope (SMVG) is proposed. The push-pull driving is adopted and in-phase AC and reverse-phase DC voltages are applied in the driving electrodes placed in both sides of the active combs, respectively. Driving performance analyses show that the frequency spectrum between driving moments and noise signals is separated. Therefore, the model of the closed-loop control is set up with the phase lock loop (PLL). The requirements for phases and gains of the sinusoidal selfdrive-oscillation are met by PLL, thus the closed-loop circuit reaches the self-drive-oscillation. Phase conditions of the sinusoidal self-drive-oscillation and the characteristic of phase discrimination of the PLL are used to eliminate the coupling between driving and sense signals, and noise signals. Finally, experimental results show that the variations of both the driving frequency and the amplitude are all under 0.02%. The precision and the reliability of the gyroscope are greatly improved.YANGBo SUYah ZHOUBai-ling 2005Transactions of Nanjing University of Aeronautics and Astronautics2005,22,2:7
4Integrated Water and CGE Model of the Impacts of Water Policy on the Beijing's Economy and Output显示文摘The article used general equilibrium model to analyze the change of gross domestic product and industry output affected by water resources policies in Beijing City by using GEMPACK soft tool.The article researches on rules of water supply and demand,evaluating water resources,building water resources input and output table,establishing water computable general equilibrium model and stimulating water policy.The stimulation gives a scenario that increases water price by 10%.The result shows the following aspects.First,water resources policy infects gross domestic product and industry output in different ways.There are different behaviors in different industries as to the water policy. Agriculture industry has the same tendency as water price change and it has more sensitive to water quantity than to water price.For basic energy industries such as oil and chemistry and gas,they show diversity tendency.As to some high water consumer industry such as paper and textile etc.,water resource economic policy can infect them greatly and can promote them to accomplish more water-saving technology.Waste water and construction and service industries show the same tendency as to water policy.Second,government should pay more attention to water resource policy by macro economic administration.The simulation also shows that the output and supply and consumer price change more than expect as to water policy in a free market economic in water industry.So as to a government policy maker,one should be more carefully and prepare suitable forecast and plan to water policy and its negative impact.Xia Jun Deng Qun Sun Yangbo 2010Chinese Journal of Population,Resources and Environment2010,8,2:6
5Saline-Sodic Soils:Potential Sources of Nitrous Oxide and Carbon Dioxide Emissions?显示文摘Increasing salt-affected agricultural land due to low precipitation,high surface evaporation,irrigation with saline water,and poor cultural practices has triggered the interest to understand the influence of salt on nitrous oxide(N_2O) and carbon dioxide(CO_2)emissions from soil.Three soils with varying electrical conductivity of saturated paste extract(EC_e)(0.44-7.20 dS m^(-1)) and sodium adsorption ratio of saturated paste extract(SARe)(1.0-27.7),two saline-sodic soils(S2 and S3) and a non-saline,non-sodic soil(S1),were incubated at moisture levels of 40%,60%,and 80%water-filled pore space(WFPS) for 30 d,with or without nitrogen(N)fertilizer addition(urea at 525 μg g^(-1) soil).Evolving CO_2 and N2 O were estimated by analyzing the collected gas samples during the incubation period.Across all moisture and N levels,the cumulative N_2O emissions increased significantly by 39.8%and 42.4%in S2 and S3,respectively,compared to S1.The cumulative CO_2 emission from the three soils did not differ significantly as a result of the complex interactions of salinity and sodicity.Moisture had no significant effect on N_2O emissions,but cumulative CO_2 emissions increased significantly with an increase in moisture.Addition of N significantly increased cumulative N_2O and CO_2 emissions.These showed that saline-sodic soils can be a significant contributor of N_2O to the environment compared to non-saline,non-sodic soils.The application of N fertilizer,irrigation,and precipitation may potentially increase greenhouse gas(N2O and CO_2) releases from saline-sodic soils.Upasana GHOSH Resham THAPA Thomas DESUTTER HE Yangbo Amitava CHATTERJEE 2017Pedosphere2017,27,1:5
6The soil configuration on granite residuals affects Benggang erosion by altering the soil water regime on the slope显示文摘A permanent collapsing gully,locally called Benggang,formed on slopes with deep granite red soil and is a type of unique gully erosion widely prevalent in southern China.Three different soil configurations(SC),ie,red-transition-sandy(SC I,the transition is the soil layer between the red soil and the sandy soil layer),transition-sandy(SC II)or sandy(SC III)are usually present in the soil profile of the Benggang slope.However,little attention has been paid to impacts of SCs on the triggering of Benggang erosion.In this study,we aimed to explore the relationships between soil water content(SWC)and triggering of Benggang erosion under different SC conditions.The soil properties of different soil layers were measured and the SWC at depths of 20,40,60,and 80 cm were monitored at 5-min intervals along a typical Benggang(SC I)during 2016-2018.The SWC of Benggang slopes with different SCs were simulated by VADOSE/W model.Results showed that the red soil layer had a higher water retention capacity and shear strength than the sandy soil layer.Even if the SWC is higher(e.g.,0.42 cm^(3)/cm^(3))at red soil layer or transition layer,the corresponding shear strength is greater than that of sandy soil layer with a lower SWC(e.g.,032 cm^(3)/cm^(3)).Relationships between shear strength and SWC of different soil layers indicate that Benggang erosion is triggered by an increase in the SWC in the deep sandy layer.Results also showed that differences exist in the SWC distribution among the different SCs.The SWC is higher in topsoil than in deeper soil in SC I and SC II,while in SC III,the opposite trend is observed.These results revealed that the presence of the red soil or transition layer can reduce the infiltration of rainwater into the deep sandy layer,thus can reduce the possibility of collapse.Our results show that the SC affects the stability of the headwall,and results provide great significances to guide the mitigation of Benggang erosion.Xiaoqian Duan Yusong Deng Yu Tao Yangbo He Lirong Lin Jiazhou Chen 2021International Soil and Water Conservation Research2021,9,3:4
7Colour modulation and enhancement of upconversion emissions in K_(2)NaScF_(6):Yb/Ln(Ln=Er,Ho,Tm) nanocrystals显示文摘Effective colour modulation of upconversion emissions in lanthanide-doped nanomaterials becomes even more important for fundamental and applied research.Herein,on the one hand,by raising the content of doped Yb^(3+)from 10 mol%to 50 mol%,a significant increase of the red/green emission ratio from 4.0 to 68.2 is observed in K_(2)NaScF_(6):Yb/Er nanocrystals.This yellow to red colour change is attributed to the increased cross relaxation between Er^(3+)and Yb^(3+)caused by the increased Yb^(3+)amount,^(4) S_(3/2)(Er^(3+))^(+2) F7/2(Yb^(3+))→4 I13/2(Er^(3+))^(+2) F5/2(Yb^(3+)).On the other hand,the upconversion green and red emission of K_(2)NaScF_(6):Yb/Er(20/2 mol%)nanocrystals are intensified 10.6 and 8.8 folds,respectively,after an active shell(K_(2)NaScF_(6):Yb)is epitaxially grown,which are more effective than the7.4-and 6.4-fold enhancement from an inert shell(K_(2)NaScF_(6))growth.Moreover,the shell thickness from2.85 to 9.5 nm through controlling the molar ratio of shell-precursor to core from 1:2 to 3:1 can be easily realized.This study will provide more opportunities for the application of K_(2)NaScF_(6):Yb/Ln nanoparticles in varied fields such as theranostics,photovoltaics,and photocatalysis.Yangbo Wang Huaiyong Li Hui Ma Ling Huang 2021Journal of Rare Earths2021,39,12:3
8Functoriality of automorphic L-functions through their zeros显示文摘Let E be a Galois extension of Q of degree , not necessarily solvable. In this paper we first prove that the L-function L(s,π) attached to an automorphic cuspidal representation π of GLm(EA) cannot be factored nontrivially into a product of L-functions over E. Next, we compare the n-level correlation of normalized nontrivial zeros of L(s,π1)···L(s,πk), where πj, j = 1,...,k, are automorphic cuspidal representations of GLmj(QA), with that of L(s,π). We prove a necessary condition for L(s,π) having a factorization into a product of L-functions attached to automorphic cuspidal representations of specific GLmj(QA), j = 1,...,k. In particular, if π is not invariant under the action of any nontrivial σ∈ GalE/Q, then L(s,π) must equal a single L-function attached to a cuspidal representation of GLm (QA) and π has an automorphic induction, provided L(s,π) can factored into a product of L-functions over Q. As E is not assumed to be solvable over Q, our results are beyond the scope of the current theory of base change and automorphic induction. Our results are unconditional when m,m1,...,mk are small, but are under Hypothesis H and a bound toward the Ramanujan conjecture in other cases.LIU JianYa YE YangBo 2009Science China Mathematics2009,52,1:2
9Spatial variability of soil organic carbon and total nitrogen in the hilly red soil region of Southern China显示文摘To obtain accurate spatial distribution maps of soil organic carbon(SOC)and total nitrogen(TN)in the Hetian Town in Fujian Province,China,soil samples from three depths(0–20,20–40,and 40–60 cm)at 59 sampling sites were sampled by using traditional analysis and geostatistical approach.The SOC and TN ranged from 2.26 to 47.54 g kg-1,and from 0.28 to 2.71 g kg-1,respectively.The coefficient of variation for SOC and TN was moderate at 49.02–55.87%for all depths.According to the nuggetto-sill ratio values,a moderate spatial dependence of SOC content and a strong spatial dependence of TN content were found in different soil depths,demonstrating that SOC content was affected by both extrinsic and intrinsic factors while TN content was mainly influenced by intrinsic factors.Indices of cross-validation,such as mean error,mean standardized error,were close to zero,indicating that ordinary kriging interpolation is a reliable method to predict the spatial distribution of SOC and TN in different soil depths.Interpolation using ordinary kriging indicated the spatial pattern of SOC and TN were characterized by higher in the periphery and lower in the middle.To improve the accuracy of spatial interpolation for soil properties,it is necessary and important to incorporate a probabilistic and machine learning methods in the future study.Xiong Yao Kunyong Yu Yangbo Deng Jian Liu Zhuangjie Lai 2020Journal of Forestry Research2020,31,6:2
10Clinical study of IL-18 and NANOG gene polymorphisms in prostate cancer patients显示文摘Objective Recent studies have shown abnormal expression of NANOG and IL-18 to be related to cancer. However, the molecular mechanism by which IL-18 and NANOG gene polymorphisms are associated with prostate cancer is unclear. In this study, we examined whether IL-18 and NANOG gene polymorphisms and their interaction with prostate cancer-related risk factor are associated with the susceptibility to and clinicopathological development of prostate cancer among Chinese men.Methods Polymorphisms in the NANOG and IL-18 genes were evaluated for susceptibility in 120 patients with prostate cancer. The control group consisted of 125 samples from Chinese men. Genotyping was conducted using Taq Man allelic discrimination assays. Statistical analysis was performed using SPSS software. Results No association of NANOG and IL-18 gene polymorphisms and overall prostate cancer susceptibility was detected. The IL-18-607 CC genotype was significantly associated with a higher tumor grade(P = 0.025) and stage(P =0.001). The IL-18-137 GG genotype correlated with a higher tumor grade(P = 0.028) and stage(P = 0.008). The IL-18-137 G allele was significantly more frequent in patients with lymph node metastasis(P = 0.035). The IL-18-607 CC genotype was associated with distant metastasis(P = 0.025). However, no significant association was observed between NANOG polymorphisms and any clinicopathological feature. The Cox proportional hazard model showed that tumor grade and stage grouping were independent prognostic factors in IL-18, while IL-18 polymorphism was not. Polymorphism variants in the IL-18(IL-18-607 and IL-18-137) and NANOG(genotypes AC) genes might be associated with a worse prognosis of patients with prostate cancer.Conclusion NANOG may be associated with the early stages of prostate cancer carcinogenesis. IL-18 and NANOG gene polymorphisms may play a major role in the growth, invasion, and metastasis of prostate cancer.Shaojun Nong Yangbo Guan Zhiwei Wang Zhongqing Wei Yueping Zhang Jian Ni Chongsheng He Limin Ma Shujun Zhou Wenguang Li 2018Oncology and Translational Medicine2018,4,6:2
11Spectral square moments of a resonance sum for Maass forms显示文摘让 f 是为有 Fourier 系数 f (n) 和 Laplace 特征值 \ 的 0(N) 的一种 Maass 尖顶形式(\frac { 1 }{ 4 }+ k ^ 2 \) 。真的 0 并且 > 0,认为和 S X 是 (f;,) 是紧缩的支持的光滑的功能的 = n f (n)e(n )(n/X), 。我们证明界限为第二光谱 S X (f 的时刻;,) ,与向无穷趋于的特征值。当特征值足够地大时,我们以 X 为这和获得平均界限。如果 f 在 \ 以外有它的特征值,这暗示那(X ^{\tfrac { 1 }{ 2 }+\varepsilon }\) ,标准回声为 S X (f 的主要术语;\(\pm 2 \sqrt q \) , 1/2 ) , q +, 不能一般来说出现。方法为 GL (2 ) 为 Rankin-Selberg L 功能从 subconvexityNathan SALAZAR Yangbo YE 2017Frontiers of Mathematics in China2017,12,5:2
12Weighted stationary phase of higher orders显示文摘这份报纸的主题是有由 g 加权的阶段 f (x) 的指数的摆动的积分有限间隔上的(x)[] :当阶段 f (x) 在() 有一个单个静止的点时,这的第 n 顺序的 asymptotic 扩大积分为 n 被证明 2:这 asymptotic 扩大削尖 n = 的古典结果 1 由 M.N. 赫克斯利。类似的 asymptotic 扩大被 V 证明。Blomer, R。中亚细亚并且在 f (x) 和 g (x) 是光滑的假设和 g (x) 下面年轻的 M. 简洁地在 R 上被支持:在现在的纸,然而,这些功能仅仅被假定连续地可辨在上[] 2n + 3 并且 2n + 1 次分别地。因为在端点 g (x) 和它的衍生物消失上没有要求并且,现在的 asymptotic 扩大总体上包含明确的边界术语并且错误术语。在这份报纸的 asymptotic 扩大对在分析,分析数字理论,和另外的地的问题的一个更宽的班因此适用。Mark MCKEE Haiwei SUN Yangbo YE 2017Frontiers of Mathematics in China2017,12,3:2
13显示文摘ZhongXiangyu(钟祥玉) YangBo(杨波) LiMoucheng(李谋成)etal 2010稀有金属材料与工程2010,39,12:2
14Significant association between IL-18 and OCT4 gene polymorphisms in susceptibility and clinical characteristics of prostate cancer显示文摘Objective Recent studies have shown abnormal expression of octamer-binding transcription factor 4(OCT4) and interleukin-18(IL-18) to be related to cancer. However, the molecular mechanisms by which the IL-18 and OCT4 gene polymorphisms are associated with prostate cancer remain unclear. In this study, we aimed to determine whether the presence of IL-18 and OCT4 polymorphisms were associated with size, grade, tumor, nodes and metastasis(TNM) stage, or survival in patients with prostate cancer.Methods Polymorphisms in OCT4 and IL-18 genes were evaluated to determine susceptibility to prostate cancer in 120 patients. A control group consisted of 125 Chinese participants. Genotyping was performed using TaqMan allelic discrimination assays, and statistical analysis was performed using SPSS. Results No association was found between OCT4 and IL-18 gene polymorphisms and prostate cancer susceptibility. For OCT4 AA and IL-18-607 CC genotypes, there was a significant association with higher tumor grade(P = 0.03 and P = 0.025) and stage(P = 0.04 and P = 0.001). The OCT4 and IL-18-137 GG genotype was correlated with higher tumor grade(P = 0.028) and stage(P = 0.008). Furthermore, OCT4 AA was significantly more frequent in patients with lymph node metastasis(P = 0.02) and distant metastasis(P = 0.01). The Cox proportional hazard model showed that tumor grade and stage grouping were independent prognostic factors but IL-18 and OCT4 polymorphisms were not. Conclusion The OCT4 gene may have a profound effect on prostate cancer risk. Polymorphism variants in the IL-18(IL-18-607 and IL-18-137) and OCT4 genes may be associated with poor prognoses for individuals with prostate cancer.Shaojun Nong Yangbo Guan Zhiwei Wang Zhongqing Wei Yueping Zhang Jian Ni Chongsheng He Limin Ma Shujun Zhou Wenguang Li 2019Oncology and Translational Medicine2019,5,3:2
15Electrical and mechanical performance of graphene sheets exposed to oxidative environments显示文摘当暴露了到不同媒介时, Graphene 涂层被显示了保护内在的材料免受氧化的伤害。然而,在在房间温度的空中的 graphene 的使钝化的性质,对应于许多电子设备的操作条件,仍然保持不清楚。在这个工作,我们为时间的长时期在房间温度在空中分析 graphene/Cu 样品的氧化动力学(从 1 天到 113 天)用扫描电子显微镜学,传导性的原子力量显微镜学和钻电子显微镜学,并且我们把结果与那些为在 H2O2 对待的类似的样品获得了作比较。我们不同于暴露于 H2O2,在 graphene 领域边界的氧的累积在演变在的 graphene 表观察那一很控制了并且进步方法,在空中的 graphene 的本地氧化以一种混乱方式发生。在两个盒子中,在 graphene 领域边界形成的氧化物小丘能宣传到领域直到到达限制宽度和高度。我们的结果证明沿着域边界的内在的材料的本地氧化能戏剧性地减少粗糙,传导性,机械抵抗和 graphene 表的摩擦特征,哪个还原剂整个设备的性能。Mario Lanza Yan Wang Teng Gao Albin Bayerl Marc Porti Montserrat Nafria Yangbo Zhou Guangyin Jing Yanfeng Zhang Zhongfan Liu Dapeng Yu Huiling Duan 2013Nano Research2013,6,7:2
16显示文摘WANGCui-ming(王舉敏) YANGBo(杨波) WANGJing etal(王晶等) 光谱实验室0,,:1
17A Holistic Conserving Approach on Heritage of the Grand Canal,China:Cultural Values Assessment of the Canal Under Historical Context of Jiangnan CivilizationCHAI Yangbo,DONG Wei,WANG Shenyu,CHEN Yi 2011China City Planning Review2011,20,1:1
18FLEXIBLE 2-DOF STEERING MODEL OF MULTI-AXLE HEAVY-DUTY VEHICLE显示文摘A flexible two degrees of freedom (2-DOF) steering model of multi-axle vehicle (MAV) is presented with considering the effect of frame flexibility based on the classic 2-DOF model. A method to calculate the frame flexibility is derived by using three moments equation. The steering stability of MAV is analyzed. The steering performance of MAV is also researched in frequency domain. Simulation results show that the dynamic effects of flexible model are more severe than rigid model and the flexible effect of frame will weaken the steering stability of MAV. Different disposals of steering axles lead to different steering characteristics of MAV. The in-phase steering mode improves the steering characteristics and stability at high speed. The anti-phase steering mode increases the steering mobility at low vehicle speed.YangBo WangXuelin HuYujin LiChenggang 2004Chinese Journal of Mechanical Engineering2004,17,4:1
19High- voltage power integrated circuit technology using bulk- silicon for plasma display panels data driver IC显示文摘Sun Weifeng Wu Jianhui Yi Yangbo 2004Mi- croelectron Eng2004,71,1:1
20Experimental and nu-merical investigation on performance of a porous medium burner withreciprocating flow显示文摘Xie Maozhao Shi Junrui Deng Yangbo 2009Fuel2009,88,:1
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