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19 results on '"Zhang, Zhixun"'

3. Photo‐Electro‐Thermal Textiles for Scalable, High‐Performance, and Salt‐Resistant Solar‐Driven Desalination.

Author

Xu, Duo, Ge, Can, Chen, Ze, Zhang, Zhixun, Zhang, Qian, Chen, Tao, Gao, Chong, Xu, Weilin, and Fang, Jian

Subjects
ELECTRIC wire, ELECTRIC wiring, PHOTOTHERMAL conversion, CONSTRUCTION materials, ENERGY dissipation, YARN, HEAT pipes
Abstract

Solar‐driven interfacial evaporation is an emerging desalination technology that can potentially relieve the freshwater scarcity issue. To obtain high and continuous evaporation rates for all‐weather, chemically engineered structural materials have been widely explored for simultaneous photothermal and electrothermal conversion. However, many previously reported fabrication processes involve poor integration and considerable energy loss. Herein, a scalable photo‐electro‐thermal textile is proposed to enable high efficiency, long‐term salt rejection, and solar‐driven desalination. Specifically, the photo‐electro‐thermal yarns with a core (commercial electric wire)‐shell (polypyrrole‐decorated Tencel) structure realize the integration of electrothermal and photothermal conversion. The wrapping eccentricity of 1.53 mm and pitch of 3 T cm−1 for the electric wire are rationally regulated to achieve a high surface temperature of over 52 °C at a 3 V DC input. As a result, exceptional and stable evaporation rates of 5.57 kg m−2 h−1 (pure water) and 4.89 kg m−2 h−1 (3.5 wt.% brine) under 1 kW m−2·radiation with a 3 V input voltage are realized. Practical application shows that the textiles can achieve high water collection of over 46 kg m−2 d−1 over the whole day of operation. The constructed photo‐electro‐thermal textile‐based evaporator provides an effective method for commercial and scalable photo‐electro‐thermal conversion to achieve high‐performance and salt‐resistant solar‐driven desalination. [ABSTRACT FROM AUTHOR]

Published
2024
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7. False Data Injection Attacks on LFC Systems: An AI-Based Detection and Countermeasure Strategy

Author

Zhang, Zhixun, Hu, Jianqiang, Lu, Jianquan, Cao, Jinde, and Yu, Jie

Abstract

The development of integrated energy system has promoted the development of the power system into the largest and most complex cyber-physical energy system, where the change in the openness of the load frequency control (LFC) system has also increased its susceptibility to false data injection attacks (FDIAs). This paper porposes an artificial intelligence (AI) based detection and countermeasure strategy to protect LFC systems from FDIAs. First, The levenberg-marquarelt-back propagation (LM-BP) neural networks (NNs) is trained by collecting the historical data of frequency deviation, power deviation of contact line, and active power load deviation. Second, the output control signal of LM-BP NNs is tested against the output of the system controller for residuals to determine whether has FDIAs. Furthermore, to resist the negative effects of FDIAs, the control signal calculated by the LM-BP NNs will replace the traditional proportion integration differentiation (PID) output. Finally, The advantages of the proposed strategy are illustrated by the two interconnected power systems.

Published
2024
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16. Case report

Author

Peng, Tao, Zhang, Zhixun, Wu, Duo, and Wan, Shaw P.

Subjects
Causes of -- Diagnosis -- Care and treatment -- Case studies, Health
Abstract

> THE PATIENT 21-year-old man > SIGNS & SYMPTOMS --Abdominal distention --Loss of appetite --Elevated creatinine > THE CASE A 21-year-old male college student sought care at our urology clinic [...]

Published
2015

18. Prediction of Petroleum Prospect in the South Yellow Sea Basin Using Satellite Remote Sensing

Author

Gong, Jianming, Chen, Jianwen, Liang, Jie, Zhang, Zhixun, Liu, Chuang, Lu, Zhenquan, and Huang, Fulin

Subjects
Petroleum, Remote satellite sensing, Prediction
Abstract

Using satellite remote sensing to measure the sea surface temperature of the East China Sea Shelf Basin can serve the purpose of predicting the petroleum prospect in the South Yellow Sea Basin. The satellite thermal infrared temperature anomaly area always repeats in the same position as the proved oil prospect area in the East China Sea Shelf Basin, and coincides well with both the CH4 content curve at the water-atmosphere interface and the seafloor geochemical anomaly. The sea surface temperature anomaly areas of the South Yellow Sea Basin in the satellite remote sensing image go banded along 123?30? in the S-N direction, and naturally follow the aeromagnetically interpreted eastern nose-type uplift that shows a S-N strike. The north and south ends of the eastern nose are considered as good oil prospect areas because temperature anomaly often occurs there. Published

Published
2007

19. Abdominal distention · loss of appetite · elevated creatinine · Dx?

Author

Peng T, Zhang Z, Wu D, and Wan SP

Subjects
Appetite, Drainage, Humans, Hydronephrosis complications, Hydronephrosis diagnostic imaging, Hydronephrosis etiology, Hydronephrosis surgery, Male, Nephrectomy, Pressure, Stents, Tomography, X-Ray Computed, Young Adult, Abdomen pathology, Creatinine blood, Hydronephrosis diagnosis
Published
2015

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