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| 1 | Design and error analysis of a high accurate star simulator based on optical splicing technology显示文摘Dynamic tar simulator has been widely used in calibration and validation for star trackers.To achieve both high accuracy and large view field,a dynamic star simulatorbased on optical splicing technology with 2 1920 × 1080- LCDs and a half-transmission and half- reflection prisms was proposed in this paper.The physical principal and error model due to the splicing structure has been discussed and analyzed in detail.Based on the Tsinghua Micro star tracker,the error effect and system accuracy has been carefully tested and calibrated.The result showed that this simulator can get the accuracy of 10.4 '(3sigma) within a field of view of,which can meet the simulating requirement of modern star tracker,whose accuracy can reach 3'(3sigma) 。 | LIU Zengyi ZHAO Borui XING Fei | 2015 | Instrumentation2015，2，1： | 7 |
| 2 | Requirement and Development of Hydrogel Micromotors towards Biomedical Applications显示文摘With controllable size,biocompatibility,porosity,injectability,responsivity,diffusion time,reaction,separation,permeation,and release of molecular species,hydrogel microparticles achieve multiple advantages over bulk hydrogels for specific biomedical procedures.Moreover,so far studies mostly concentrate on local responses of hydrogels to chemical and/or external stimuli,which significantly limit the scope of their applications.Tetherless micromotors are autonomous microdevices capable of converting local chemical energy or the energy of external fields into motive forces for self-propelled or externally powered/controlled motion.If hydrogels can be integrated with micromotors,their applicability can be significantly extended and can lead to fully controllable responsive chemomechanical biomicromachines.However,to achieve these challenging goals,biocompatibility,biodegradability,and motive mechanisms of hydrogel micromotors need to be simultaneously integrated.This review summarizes recent achievements in the field of micromotors and hydrogels and proposes next steps required for the development of hydrogel micromotors,which become increasingly important for in vivo and in vitro bioapplications. | Xinyi Lin Borui Xu Hong Zhu Jinrun Liu Alexander Solovev Yongfeng Mei | 2020 | Research2020，，1： | 2 |
| 3 | Minimizing airfoil drag at low angles of attack with DBD-based turbulent drag reduction methods显示文摘Dielectric Barrier Discharge(DBD)based turbulent drag reduction methods are used to reduce the total drag on a NACA 0012 airfoil at low angels of attack.The interaction of DBD with turbulent boundary layer was investigated,based on which the drag reduction experiments were conducted.The results show that unidirectional steady discharge is more effective than oscillating discharge in terms of drag reduction,while steady impinging discharge fails to finish the mission(i.e.drag increase).In the best scenario,a maximum relative drag reduction as high as 64%is achieved at the freestream velocity of 5 m/s,and a drag reduction of 13.7%keeps existing at the freestream velocity of 20 m/s.For unidirectional discharge,the jet velocity ratio and the dimensionless actuator spacing are the two key parameters affecting the effectiveness.The drag reduction magnitude varies inversely with the dimensionless spacing,and a threshold value of the dimensionless actuator spac-ing of 540(approximately five times of the low-speed streak spacing)exists,above which the drag increases.When the jet velocity ratio smaller than 0.05,marginal drag variation is observed.In con-trast,when the jet velocity ratio larger than 0.05,the experimental data bifurcates,one into the drag increase zone and the other into the drag reduction zone,depending on the value of dimensionless actuator spacing.In both zones,the drag variation magnitude increases with the jet velocity ratio.The total drag reduction can be divided into the reduction in pressure drag and turbulent friction drag,as well as the increase in friction drag brought by transition promotion.The reduction in tur-bulent friction drag plays an important role in the total drag reduction. | Zhi SU Haohua ZONG Hua LIANG Jun LI Like XIE Xuecheng LIU Weiliang KONG Borui ZHENG | 2023 | Chinese Journal of Aeronautics2023，36，4： | 1 |
| 4 | Utility-Based Joint Scheduling Approach Supporting Multiple Services for Co MP-SUMIMO in LTE-A System显示文摘In this paper, we study utility-based resource allocation for users supporting multiple services in a LTE-A system with coordinated multi-point transmission for single-user multi-input multi-output(Co MP-SU-MIMO). We designed Joint Transmission Power Control(JTPC) for the selected clusters for minimizing power consumption in LTE-A systems. The objective of JTPC is to calculate the optimal transmission power for each scheduled user and subcarrier. Moreover, based on the convex optimization theory, we propose the dynamic sector selection method in which the average sector throughput and cell-edge users(UEs) rates are performed to achieve the optimal solution. Simulation results show that the system performance achieved by using the proposed suboptimal algorithm is close to that achieved by the dual decomposition method. | Borui Ren Gang Liu Bin Hou | 2015 | ZTE Communications2015，13，1： | 1 |
| 5 | Novel tri- ple-band polarization-insensitive wide-angle ultra-thin microwave metamaterial absorber显示文摘 | Bian Borui Liu Shaobin Wang Shenyun | 2013 | Journal of Applied Physics2013，114，19： | 1 |
| 6 | Distribution and Speciation of Chromium and Cadmium in an Organic and Inorganic Fertilized Chernozem显示文摘Fertilizers are widely applied in agricultural practice to improve crop yield and quality.However, they can also alter the behavior of soil pollutants.A field experiment was conducted on a chernozem in Heilongjiang Province, China.Various proportions of inorganic nitrogen(N), phosphorus(P), and organic(manure) fertilizers were applied.Soil samples were collected four times over 2 years, and the total concentrations and speciation of chromium(Cr) and cadmium(Cd) were analyzed.Inorganic fertilizer addition had little effect on the total concentration of Cr and Cd, while organic fertilizer addition reduced the total concentrations of both Cr and Cd.Inorganic fertilizers increased the concentration of Cr in the exchangeable form, but decreased that of the residual form(P < 0.05).Addition of inorganic or organic fertilizer alone decreased concentrations of exchangeable Cd(P < 0.05), but the combination of inorganic and organic fertilizers had the opposite effect.High concentration of total Cd exceeding the upper limits of the Environmental Quality Standard for Soils proposed by the Ministry of Environmental Protection of China could result in an environmental risk, and fertilizer application could lower that risk.Results of risk assessment code calculated as the percentage of the sum of metal concentrations in the exchangeable and carbonate-associated form in total metal concentration showed that Cr and Cd risks were lowered when organic fertilizer was applied alone or in combination with inorganic fertilizers.Our study highlighted that organic fertilizer should be applied alone or in combination with inorganic fertilizers to lower the environmental risks of Cr and Cd pollution in the chernozem. | LIU Borui HUANG Qing CAI Huajie GUO Xiang WANG Tingting GUI Mingying | 2017 | Pedosphere2017，27，6： | 1 |
| 7 | Effects of Qidi Tangshen granules and their separate prescriptions on podocytes in mice with diabetic nephropathy显示文摘Objective:Previous studies have found that Qidi Tangshen granules(QDTS),a combination therapy of supplementing essence(Tianjing,TJ)and unblocking the collaterals(Tongluo,TL),can reduce kidney damage in db/db mice.This study aimed to explore the effect of QDTS and their separate prescriptions on podocytes in mice with diabetic nephropathy.Methods:The db/db mice were used in this experiment as an animal model,while wild-type C57BL/6J mice were used as normal controls.At the age of 12 weeks,the db/db mice were randomly divided into 5 groups(db/db,db/dbþvalsartan,db/dbþQDTS,db/dbþTJ and db/dbþTL).The urine albumin excretion ratio(UAE)was measured by enzyme-linked immunosorbent assay before and after the intervention.The ultrastructure of the kidney podocytes was observed by transmission electron microscopy.The protein expression levels of nephrin and desmin were detected by immunohistochemistry.Results:QDTS and their separate prescriptions significantly decreased the UAE and attenuated the renal pathological injury.QDTS and their separate prescriptions also reduced the fusion rate of the foot processes and increased the expression of nephrin protein.In contrast,QDTS and their separate prescriptions(TJ and TL)reduced the expression level of desmin protein.Conclusion:QDTS and their separate prescriptions might reduce diabetes-induced renal injury by reducing podocyte damage.The therapeutic effect of QDTS was more pronounced than TJ and TL. | Borui Yu Hongfang Liu Xue Gao Qingqing Liu Qing Du Xiangming Wang Zhichao An Lin Wang Huidi Xie | 2022 | Journal of Traditional Chinese Medical Sciences2022，9，1： | 0 |
| 8 | Application of Personalized Recommendation System in Music Platform显示文摘 | Sun Nan Liu Borui Liu Meiran Cui Jizhe | 2017 | 管理科学与研究(中英文版)2017，6，1： | 0 |
| 9 | A dynamic control structure of liquid-only transfer stream distillation column显示文摘The intention of this fundamental work is to explore the manipulation of a mixture of benzene,toluene and o-xylene separated from liquid-only transfer divided-wall column(LTS-DWC).First,two control structures are clearly proposed,including seven component control loops(CS1)and seven temperature control loops(CS2).However,two control structures can handle ±10% feed disturbances rather than larger feed disturbances.Subsequently,an equivalent four-column model by introducing withdraw ratio is developed to discuss the effect of two liquid-only side-stream on the overall reboiler duty.It is indicated that the second liquid-only side-stream withdraw ratio strongly affects the overall energy consumption.Hence,six-component control loops within the fixed second liquid-only side-stream withdraw ratio(CS3)is proposed and the purity of products returns to set value even as facing ±20% feed disturbances.Finally,based on the above results,it is established a temperature control structure(CS4)for controlling fixed second liquid-only side-stream withdraw ratio,which can cope with ±15% disturbances.Inspired by these findings,an insight into the dynamic control of LTS-DWC promotes the industrial implementation of DWC through new liquid-only side-stream configurations. | Borui Liu Tao Zhang Yi Zheng Kailong Li Hui Pan Hao Ling | 2023 | Chinese Journal of Chemical Engineering2023，59，7： | 0 |
| 10 | Activation of Pancreatic Acinar FXR Protects against Pancreatitis via Osginl-Mediated Restoration of Efficient Autophagy显示文摘Pancreatitis is the leading cause of hospitalization in gastroenterology,and no medications are available for treating this disease in current clinical practice.FxR plays an anti-inflammatory role in diverse inflammatory diseases,while its function in pancreatitis remains unknown.In this study,we initially observed a marked increase of nuclear FXR in pancreatic tissues of human patients ithpancratis eleting theFXRinpancreati acinar cels FXRicnara/a)ledto moreseverepancreatitis in mousemodels of caerulein-induced acute and chronic pancreatitis,while the FXR agonist GW4064 significantly attenuated pancreatitis in caerulein or arginine-induced acute pancreatitis and caerulein-induced chronic pancreatitis.FXR deletion impaired the viability and stress responses of pancreatic exocrine organoids(PEOs)in vitro.Utilizing RNA-seq and ChIP-seq of PEOs,we identified Osginl as a direct target of FxR in the exocrine pancreas,which was also increasingly expressed in human pancreatitis tissues compared to normal pancreatic tissues.Pancreatic knockdown of Osgin1 by AAV-pan abolished the therapeutic effects of FXR activation on pancreatitis,whereas pancreatic overexpression of Osginl effectively alleviated caerulein-induced pancreatitis.Mechanistically,we found that the FXR-OSGINl axis stimulated autophagic flux in the pancreatic tissues and cell lines,which was considered as the intrinsic mechanisms through which FXR-OSGINI protecting against pancreatitis.Our results highlight the protective role of the FXR-OSGIN1 axis in pancreatitis and provided a new target for the treatment of this disease. | Yufan Zheng Wenrui Sun Zhengyang Wang Jiaying Liu Cong Shan Chenxi He Borui Li Xiao Hu Wenjia Zhu Liyan Liu Fei Lan Changtao Jiang Chao Zhao Xiaobo Li Ning Sun | 2023 | Research2023，，1： | 0 |
| 11 | A semi-immobilized sulfur-rich copolymer backbone with conciliatory polymer skeleton and conductive substrates for high-performance Li-S batteries显示文摘Sulfur-rich polymers have gained a great deal of attention as the next-generation active materials in lithium-sulfur(Li-S)batteries due to their low cost,environmental compatibility,naturally sulfur uniform dispersion,and distinctive structure covalently bonding with sulfur atoms.However,the poor electrical conductivity and undesirable additional shuttle effect still hinder the commercial application of sulfur-rich polymers.Herein,we report a flexible semi-immobilization strategy to prepare allylterminated hyperbranched poly(ethyleneimine)-functionalized reduced graphene oxide(A-PEI-EGO)as sulfur-rich copolymer backbone.The semi-immobilization strategy can effectively reconcile the demand for polymer skeleton and conductive substrates through forming quaternary ammonium groups and reducing oxygen-containing functional groups,resulting in enhanced skeleton adsorption capacity and substrate electronic conductivity,respectively.Furthermore,the stable covalent bonding connection based on polymer molecules(A-PEI)not only completely prevents the additional shuttle effect of lithiation organic molecules and even sulfur-rich oligomers,but provides more inverse vulcanization active sites.As a result,the as-prepared A-PEI-EGO-S cathodes display an initial discharge capacity of1338 m A h g^(-1)at a rate of 0.1 C and an outstanding cycling stability of 0.046%capacity decay per cycle over 600 cycles.Even under 6.2 mg cm^(-2)S-loaded and sparing electrolyte of 6μL mg^(-1),the A-PEI-EGO-S cathode can also achieve a superior cycling performance of 98%capacity retention after 60 cycles,confirming its application potential. | Tianpeng Zhang Zihui Song Jinfeng Zhang Wanyuan Jiang Runyue Mao Borui Li Siyang Liu Xigao Jian Fangyuan Hu | 2023 | Journal of Energy Chemistry2023，，6： | 0 |
| 12 | Nanomembrane folding origami:Geometry control and micro-machine applications显示文摘Three-dimensional(3D)microstructures have important applications in a wide range of engineering fields.A strategy of nanomembrane folding origami with microdroplet-guided intercalation and strain engineering to construct complex 3D microstructures for micro-machine applications is proposed in the present investigation.The results showed that nanomembranes were released by the microdroplet intercalation and subsequently fold up as creases,or remain flat as facets,depending on the strain design configurations.The 3D geometry can be controlled by the crease design and by an externally applied magnetic field.Moreover,this folding strategy is used to construct magnetic micro-mirror arrays,magnetic micro-robots,and a twin-jet motor platform,showing potential micro-machine applications in optical micro-devices and robotics.This strategy offers a simple,precise,and designable method of folding 3D microstructures for fundamental research and practical applications. | Yang Zong Xinyuan Zhang Yue Wu Yang Wang Chang Liu Borui Xu Gaoshan Huang Jizhai Cui Yongfeng Mei | 2021 | Progress in Natural Science:Materials International2021，31，6： | 0 |
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