A Nonlinear Observer Approach of SOC Estimation Based on Hysteresis Model for Lithium-ion Battery

In this paper, a state of charge U+0028 SOC U+0029 estimation approach for lithium-ion battery based on equivalent circuit model and the input-to-state stability U+0028 ISS U+0029 theory has been proposed. According to the electrochemical performance of lithiumion battery, the equivalent circuit model with two RC networks is established, which includes hysteresis characteristic in inner electrochemical response process. The nonlinear relation between open circuit voltage U+0028 OCV U+0029 and SOC is obtained from a rapid test. Exponential fitting method is used to identify the parameters of the model. A novel state observer based on ISS theory is designed for lithium-ion battery SOC estimation. The designed observer is tested on AMESim and Simulink co-simulation. The simulation results show that the proposed method has a high SOC estimation accuracy with an error of about 2 percent. © 2017 Chinese Association of Automation.

香港青年内地发展政策与大湾区“融合发展”--基于HKPSSD数据的实证研究

促进港澳青年"北上"内地发展,融入国家发展大局,最终实现"人心回归",是"粤港澳大湾区"政策体系中的重要内容和目标。回归以来,中央已累计推出100多项鼓励香港青年到内地发展的政策,其效果和机制亟需进行评估。论文基于香港社会动态追踪调查HKPSSD数据,以国家认同作为政策效标,评估现有内地发展政策对香港青年国家认同的效应,并从心理层面考察其作用机制。研究发现,频繁返回内地对青年国家认同确有提升作用,心理融合在此过程中起到完全中介作用。该机制在通过倾向值匹配进行稳健性检验后依然稳健,并且心理融合的中介效应量有所上升。研究表明,香港青年内地发展政策已取得了一定程度的积极效应,心理融合在机制中起到关键的效能转化作用。在粤港澳大湾区"融合发展"的战略目标和制度框架底下,做好心理融合工作,将是香港青年内地发展经历转化为国家归属感的重要抓手。

Research Progress of HKT Transporter Genes in Plants

HKT transport protein is an ion transporter thai exists on plasmalemma and a ubiquitous transmembrane protein responsible for Na ＋ transport and K＋ - Na ＋ symport. HKT transport protein is regulated by the expression of ItKT family genes. The overexpression of HKT family genes can improve activity of Na＋ transport and K＋ - Na＋ s.vmport proteins in plants, lead to Na ＋ recycle, reduce Na ＋ concentration in vivo, maintain K ＋/Na＋ ratio, and ensure normal physiological functions of eells, thereby improving salt toleranee of plants. This paper introduced the discovery and claning of HKT family genes, revealed interactions between HKT family genes and SOS, NHX genes, and summarized the relationship between the structure, function of HKT protein and salt tolerance of plants to clarify the function and mechanism of action of HKT transport protein, aiming at laying the foundation for genetic engineering of plants for salt tolerauee and providing basis for breeding haloduric transgenie plant.

Experimental and Numerical Analysis of the Influence ofMicrochannel Size and Structure on Boiling Heat Transfer

Computational fluid dynamics was used and a numerical simulation analysis of boiling heat transfer in microchannels with three depths and three cross-sectional profiles was conducted.The heat transfer coefficient and bubble generation process of three microchannel structures with a width of 80μm and a depth of 40,60,and 80μm were compared during the boiling process,and the factors influencing bubble generation were studied.A visual test bench was built,and test substrates of different sizes were prepared using a micro-nano laser.During the test,the behavior characteristics of the bubbles on the boiling surface and the temperature change of the heated wall were collected with a high-speed camera and a temperature sensor.It was found that the microchannel with a depth of 80μm had the largest heat transfer coefficient and shortest bubble growth period,the rectangular channel had a larger peak heat transfer coefficient and a lower frequency of bubble occurrence,while the V-shaped channel had the shortest growth period,i.e.,the highest frequency of bubble occurrence,but its heat transfer coefficient was smaller than that of the rectangular channel.

Inter3D:Capture of TAD Reorganization Endows Variant Patterns of Gene Transcription

Topologically associating domain(TAD)reorganization commonly occurs in the cell nucleus and contributes to gene activation and inhibition through the separation or fusion of adjacent TADs.However,functional genes impacted by TAD alteration and the underlying mechanism of TAD reorganization regulating gene transcription remain to be fully elucidated.Here,we first developed a novel approach termed Inter3D to specifically identify genes regulated by TAD reorganization.Our study revealed that the segregation of TADs led to the disruption of intrachromosomal looping at the myosin light chain 12B(MYL12B)locus,via the meticulous reorganization of TADs mediating epigenomic landscapes within tumor cells,thereby exhibiting a significant correlation with the down-regulation of its transcriptional activity.Conversely,the fusion of TADs facilitated intrachromosomal interactions,suggesting a potential association with the activation of cytochrome P450 family 27 subfamily B member 1(CYP27B1).Our study provides comprehensive insight into the capture of TAD rearrangement-mediated gene loci and moves toward understanding the functional role of TAD reorganization in gene transcription.The Inter3D pipeline developed in this study is freely available at https://github.com/bm2-lab/inter3D and https://ngdc.cncb.ac.cn/biocode/tool/BT7399.