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| 1 | NUMERICAL SIMULATION OF FLOW THROUGH ORIFICE ENERGY-DISSIPATORS IN XIAOLANGDI FLOOD-DISCHAR-GE TUNNEL显示文摘The cavitation of orifi ces is one of the main problems of the Xiaolangdi flood discharge tunnels. Along with the decompression experiment, the flow field was calculated in this paper by using an axis-symmetrical k-ε turbulence model. The calculated pressur e distribution was compared with the measured data and in agreement with each ot her. The calculated results show that few of the cavitation bubbles generating a t the orifice edge can reach the wall under the calculation condition, the force applied on the orifice surface and the flow pattern before the orifice may be i mproved obviously by adding the vortex elimination ring at the upper side of the orifice. | Qu, Jingxue Xu, Weilin Yang, Yongquan Wang, Wei Diao, Mingjun | 2000 | Journal of Hydrodynamics2000，12，3： | 14 |
| 2 | The development road of ammonium phosphate fertilizer in China显示文摘Ammonium phosphate fertilizer is the compounds containing nitrogen and phosphorus that are usually produced through the neutralization reaction of phosphoric acid and ammonia.At present,there are a variety of products,such as slurry monoammonium phosphate(MAP),diammonium phosphate(DAP),industrial grade MAP,water soluble MAP,water soluble ammonium polyphosphate(APP)and so on.After more than 60 years of development,China’s ammonium phosphate fertilizer industry has experienced the road of from scratch and from weak to strong.The successful development of the slurry MAP technology ended the history that the high concentration phosphate fertilizer cannot be produced by using the medium and low grade phosphate ore.The continuous,stable and large-scale production of DAP plant provides sufficient guarantee for DAP products in China.The development of new ammonium phosphate fertilizer products,such as industrial grade MAP,water soluble MAP,water soluble APP,provides technical support for the transformation and upgrading of phosphorus chemical enterprises.In this paper,the production methods,the development history and the latest research progress of ammonium phosphate fertilizers were reviewed. | Dehua Xu Benhe Zhong Xinlong Wang Xue Li Yanjun Zhong Zhengjuan Yan Jingxu Yang Xiaobin Li Yumei Wang Xiaohou Zhou | 2022 | Chinese Journal of Chemical Engineering2022，35，1： | 3 |
| 3 | Predicting the grades of Astragali radix using mass spectrometrybased metabolomics and machine learning显示文摘Astragali radix(AR,the dried root of Astragalus)is a popular herbal remedy in both China and the United States.The commercially available AR is commonly classified into premium graded(PG)and ungraded(UG)ones only according to the appearance.To uncover novel sensitive and specific markers for AR grading,we took the integrated mass spectrometry-based untargeted and targeted metabolomics approaches to characterize chemical features of PG and UG samples in a discovery set(n=16 batches).A series of five differential compounds were screened out by univariate statistical analysis,including arginine,calycosin,ononin,formononetin,and astragalosideⅣ,most of which were observed to be accumulated in PG samples except for astragalosideⅣ.Then,we performed machine learning on the quantification data of five compounds and constructed a logistic regression prediction model.Finally,the external validation in an independent validation set of AR(n=20 batches)verified that the five compounds,as well as the model,had strong capability to distinguish the two grades of AR,with the prediction accuracy>90%.Our findings present a panel of meaningful candidate markers that would significantly catalyze the innovation in AR grading. | Xinyue Yu Jingxue Nai Huimin Guo Xuping Yang Xiaoying Deng Xia Yuan Yunfei Hua Yuan Tian Fengguo Xu Zunjian Zhang Yin Huang | 2021 | Journal of Pharmaceutical Analysis2021，11，5： | 2 |
| 4 | Comparative study of gas-solids flow patterns inside novel multi-regime riser and conventional riser显示文摘 | Zhu Jingxu Yang Zhilin Li Li | 2013 | Chemical Engineering Journal2013，，： | 1 |
| 5 | Site-specific determination of TTR-related functional peptides by using scanning tunneling microscopy显示文摘为功能的肽的设计和优化, unravelling 单个积木的结构以及整体的性质是首要的。TTR1,源于人的 transthyretin,形成纤丝的肽在象家庭淀粉的 polyneuropathy 和老年的全身的淀粉样变性病那样的疾病被含有。基于 TTR1 脚手架,功能的肽 TTR1-RGD 被设计明确地与房间交往。这里,我们过去常扫描通道显微镜学(STM ) 与反向的顺序和修改前面的顺序分析 TTR1 相关的肽的集会结构。sitespecific 分析显示出下列:我) TTR1 肽涉及汇编,将近在订的表以内盖住全部长度组织。ii ) 为 TTR1-RGD 肽集会,当 RGDS 主题采用允许它支持房间粘附的灵活符合构造时, TTR1 主题形成订的表。关键地点清楚地作为连接器残余 Gly13 被识别。iii ) 尽管有在化学的差别,他们显示类似的集合的前面、反向的肽集会表演的仔细的检查特征,说明这些肽的柔韧的性质。iv ) Glycine 连接器残余在强烈建议顺序能被增加更多的连接器残余优化的 -strands, 被包括。进这些肽的装配结构的这些积累的卓见帮助解开驾驶肽集会的机制并且在新窗户中指示 sequenceprogrammed 肽 architectures.Open | Lanlan Yu Yongfang Zheng JingXu Fuyang Qu Yuchen Lin Yimin Zou Yanlian Yang Sally L. Gras Chen Wang | 2018 | Nano Research2018，11，1： | 1 |
| 6 | A quenching phenomenon for one-dimensional p-laplacian with singular boundary flux显示文摘 | Yang Ying Yin Jingxue Jin Chunhua | 2010 | Appl Math Lett2010，23，： | 1 |
| 7 | Solvothermal synthesis of carbon-coated tin nanorods for superior reversible lithium ion storage显示文摘 | Ping Wu Ning Du Jie Liu Hui Zhang Jingxue Yu Deren Yang | 2011 | Materials Research Bulletin2011，，12： | 1 |
| 8 | Large Active Faults and the Wharton Basin Intraplate Earthquakes in the Eastern Indian Ocean显示文摘In recent years,great earthquakes occurred within the Wharton Basin in the eastern Indian Ocean,and they have been associa-ted with active faulting on the ancient oceanic crust.Large seismogenic faults were thought to be the fault reactivation on the ancient oceanic crust,but these phenomena are still unclear and require examination.This study used high-quality multibeam bathymetry and multichannel seismic data collected over the northern Ninetyeast Ridge to investigate detailed fault geometry,structure,and activity.We recognized 12 large linear active faults by integrating bathymetry maps and multichannel seismic reflection profiles.Our results showed that these faults have high angles,and they all displaced the basement and propagated to the seafloor with distinct fault scarps.They trended NWW-SEE with a spacing of 10–40km and were parallel to each other and the nearby subfault of the 2012 great intraplate earthquake,suggesting similar stress fields.These faults are also in agreement with the orientations of magnetic isochrons,implying their formation by seafloor spreading.Furthermore,regarding the strike-slip focal mechanism of 2012 earthquakes,we proposed that these faults were created early by a normal spreading process and then evolved into a strike-slip pattern since the ancient oceanic crust ap-proached the subduction zones. | CHEN Jie GUO Laiyin YANG Xiaodong ZHANG Jinchang ZHANG Zhiwen SUN Mengyu LIN Jingxue | 2023 | Journal of Ocean University of China2023，22，6： | 0 |
| 9 | TMT Tertiary Mirror Optical Jitter Model Metrology显示文摘To measure the jitter performance of the Tirthy Meter Telescope tertary mirror( TMT M3),the model of jitter based on the accerleration signal is established. First and foremost,the procedure TMT required to processs the jitter data is presented. Then,the jitter of the system is divided into two parts: powered jitter and unpowered jitter. The metric of the jitter is required to be in the form of displacement or angle. So the frequency integration is involved to minify the error source introduced by the tending iterm in the time domain integration.In the evaluation of the power jitter,the accelerometers are used to obtain the rigid body motion of the tertiary mirror. The random decrement technique and dominated mode theory are applied to obtain the model of unpowered jitter. A classical telescope performances a 1. 6'RMS jitter metric; for a four meter scale system,the resonance frequency is around 107 Hz,powering,with 0. 14% damping. Consequently,the tip( 183 Hz,0.6%) and tilt( 193 Hz,0.19%) are both be measured. Using this model,the system engineers can estimate the unpowered jitter when the system is presented in the distortion. | Qichang An Jingxu Zhang Fei Yang Hongchao Zhao | 2016 | Journal of Harbin Institute of Technology(New Series)2016，23，6： | 0 |
| 10 | Regeneration and functional recovery of the completely transected optic nerve in adult rats by CNTF-chitosan显示文摘Dear Editor,The optic nerve,which belongs to the central nervous system(CNS),cannot regenerate when injured in adult mammals.1 Up to now,no readily translatable measures are available for repairing a severely injured optic nerve.Herein we demonstrated that ciliary neurotrophic factor(CNTF)-chitosan enabled the reconstruction and functional recovery of the adult rat visual system,thus shedding light on the clinical potential for repairing the severely injured optic nerve. | Xiao Liu Fei Hao Peng Hao Jingxue Zhang Liqiang Wang Si-Wei You Ningli Wang Zhaoyang Yang Kwok-Fai So Xiaoguang Li | 2023 | Signal Transduction and Targeted Therapy2023，8，3： | 0 |
| 11 | Solid-liquid phase equilibrium for the system ammonium polyphosphate-urea ammonium nitrate-potassium chloride-water at 273.2 K显示文摘Based on the dynamic method,a quaternary system of ammonium polyphosphate (APP)-urea ammonium nitrate (UAN,CO(NH_(2))_(2)-NH_(4)NO_(3))-potassium chloride (KCl)-H_(2)O and its subsystems (APP-[CO(NH_(2))_(2)-NH_(4)NO_(3)]-H_(2)O,KCl-[CO(NH_(2))_(2)-NH_(4)NO_(3)]-H_(2)O and APP-KCl-H_(2)O) were systematically investigated at the temperature of 273.2 K.Each ternary phase diagram contains one invariant point and three crystallization regions.The crystallization regions are:(1)(NH_(4))_(3)HP_(2)O_(7),(NH_(4))_(4)P_(2)O_(7)and ((NH_(4))_(3)HP_(2)O_(7)+(NH_(4))_(4)P_(2)O_(7)) for APP-[CO(NH_(2))_(2)-NH_(4)NO_(3)]-H_(2)O diagram;(2) KCl,KNO_(3)and(KCl+KNO_(3)) for KCl-[CO(NH_(2))_(2)-NH_(4)NO_(3)]-H_(2)O diagram and (3)(NH_(4))_(3)HP_(2)O_(7),KCl and((NH_(4))_(3)HP_(2)O_(7)+KCl) for APP-KCl-H_(2)O diagram.The quaternary phase diagram of APP-[CO(NH_(2))_(2)-NH_(4)NO_(3)]-KCl-H_(2)O has no quaternary invariant point but includes four solid phase crystallization regions,i.e.,(NH_(4))_(3)HP_(2)O_(7),(NH_(4))_(4)P_(2)O_(7),KNO_(3)and KCl,in which the KNO_(3)region occupies the largest area.The maximum total nutrient content (N+P_(2)O_(5)+K_(2)O) existing as ionic forms in the APP-[CO(NH_(2))_(2)-NH_(4)NO_(3)]-H_(2)O,KCl-[CO(NH_(2))_(2)-NH_(4)NO_(3)]-H_(2)O,APP-KCl-H_(2)O and quaternary systems is 44.70%,32.86%,45.56%and 46.23%(mass),respectively,indicating that the maximum nutrient content can be reached using raw materials of the corresponding systems to prepare liquid fertilizer.In the quaternary system,the content of NH_(4)~+-N ascends with the increase of the total nutrient content,while the contents of NO_(3)^(-)-N and CO(NH_(2))_(2)-N increase with elevated total N.This work can help optimize the operating parameters for the production,storage and transportation of liquid fertilizers. | Xingjuan Liang Dehua Xu Zhengjuan Yan Jingxu Yang Xinlong Wang Zhiye Zhang Jingli Wu Honggang Zhen | 2023 | Chinese Journal of Chemical Engineering2023，60，8： | 0 |
| 12 | A Semilinear Pseudo-Parabolic Equation in Exterior Domains显示文摘This paper is concerned with large time behavior of solutions for the semilinear pseudo-parabolic equation in exterior domains. It is revealed that the inhomogeneous boundary condition may develop large variation of solutions with the evolution of time. | Yang CAO Jingxue YIN | 2019 | Journal of Mathematical Research with Applications2019，39，6： | 0 |
| 13 | Evaluation of the Performance of the GSSM Under Vibration Based on Normalized Point Source Sensitivity显示文摘Giant Steerable Science Mirror( GSSM) is the tertiary mirror of the Thirty Meter Telescope( TMT).To evaluate the performance of the GSSM under the mechanical vibration,the Normalized Point Source Sensitivity( PSSn) is used to understand and characterize the optical performance degradation. First and foremost,the definition of the PSSn is shown and the calculation procedure of the PSSn at the work condition where the telescope aberration is much smaller than seeing is presented to reveal the relationship between PSSn and seeing.Then,the optical degradation due to vibration is achieved by the two methods: one is the statistics moment for the arbitrary froms of vibration and other one is spectrum method for wind load. After the theoretical presence,the simulation is processed. The multi-axis-accelerometers are used to achieve the motion of the mirror. After integrated to displacement signal,the measured signal is applied to the mathematical model of the GSSM and the optical performance degradation under certain mechanical vibration can be achieved. The PSSN flows from 0.996 to 0.994 under some dynamic vibration. And then,the wind load is applied to the mathematical model using spectrum method with the PSSN flows from 0.996 to 0.991. This paper can help the system engineers to predict the performance of the GSSM in various work condition. What is more,PSSn is able to be combined just by simple multiplication,so the optical performance degradation can be easily co-considered with other error sources. | Qichang An Jingxu Zhang Fei Yang Hongchao Zhao | 2017 | Journal of Harbin Institute of Technology(New Series)2017，24，5： | 0 |
| 14 | Crustal Structure of the Jurassic Quiet Zone in the West Pacific Ocean:Insights from 2D Multichannel Seismic Reflection Profiles显示文摘The Jurassic oceanic crust is the oldest existing oceanic crust on earth,and although distributed sparsely,carries essential information about the earth's evolution.The area around the Pigafetta Basin in the west Pacific Ocean(also known as the Jurassic Quiet Zone,JQZ)is one of a few areas where the Jurassic oceanic crust is present.This study takes full advantage of high-resolution multichannel seismic reflection profiles in combination with bathymetry,magnetic,and gravity data from the JQZ to examine the structure,deformation,and morphology of the Jurassic oceanic crust.Our results show the following insights:1)The Moho lies at 2–3 s in two-way travel time beneath the seafloor with the segmented feature.The gaps between the Moho segments well correspond to the seamounts on the seafloor,suggesting the upward migration of magma from the mantle has interrupted the pre-existing Moho.2)The oceanic crust is predominantly deformed by crustal-scale thrust faults,normal faults cutting through the top of basement,and vertical seismic disturbance zones in association with migration of thermal fluids.The thrust faults are locally found and interpreted as the results of tectonic inversion.3)Seafloor morphology in the JQZ is characterized by fault scarps,fold scarps,seamounts,and small hills,indicating the occurrence of active faults.4)The oceanic crust in the JQZ and East Pacific Rise has many structural and geometrical variations,such as the thickness of sediments,seafloor topography,basement morphology,fault size and type. | YANG Xiaodong LIN Jingxue ZHANG Jinchang LUO Yiming ZHANG Xubo QIN Zhen HUANG Yanming | 2023 | Journal of Ocean University of China2023，22，5： | 0 |
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