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| 1 | Discovery of a Miaohe-type Biota from the Neoproterozoic Doushantuo Formation in Jiangkou County, Guizhou Province, China显示文摘 | ZHAOYuanlong CHENMeng'e PENGJin YUMeiyi HEMinghua WANGYue YANGRongjun WANGPingli ZHANGZhenhan | 2004 | Chinese Science Bulletin2004，49，20： | 24 |
| 2 | 显示文摘 | WUHong-Bin(武洪斌) CHENMeng(陈猛) KANGLiang(康亮) etal | | ChinBatteryInd(DianchiGongye)0，，： | 1 |
| 3 | Prestin-Mediated Frequency Selectivity Does not Cover Ultrahigh Frequencies in Mice显示文摘In mammals,the piezoelectric protein,Prestin,endows the outer hair cells(OHCs)with electromotility(eM),which confers the capacity to change cellular length in response to alterations in membrane potential.Together with basilarmembrane resonance and possible stereociliary motility,Prestin-based OHC eM lays the foundation for enhancing cochlear sensitivity and frequency selectivity.However,it remains debatable whether Prestin contributes to ultrahigh-frequency hearing due to the intrinsic nature of the cel's low-pass features.The low-pass_property of mouse OHC eM is based on the finding that eM magnitude dissipates within the frequency bandwidth of human speech.In this study,we examined the role of Prestin in sensing broad-range frequencies(4-80 kHz)in mice that use ultrasonic hearing and vocalization(to>100 kHz)for social communication.The audiometric measurements in mice showed that ablation of Prestin did not abolish hearing at frequencies>40 kHz.Acoustic associative behavior tests confirmed that Prestin-knockout mice can learn ultrahigh-frequency sound-coupled tasks,similar to control mice.Ex vivo cochlear Ca2+imaging experiments demonstrated that without Prestin,the OHCs still exhibit ultrahigh-frequency transduction,which in contrast,can be abolished by a universal cation channel blocker,Gadolinium.In vivo salicylate treatment disrupts hearing at frequencies<40 kHz but not ultrahigh-frequency hearing.By pharmacogenetic manipulation,we showed that specific ablation of the OHCs largely abolished hearing at frequencies>40 kHz.These findings demonstrate that cochlear OHCs are the target cells that support ultrahigh-frequency transduction,which does not require Prestin. | Jie Li Shuang Liu Chenmeng Song Tong Zhu Zhikai Zhao Wenzhi Sun Yi Wang Lei Song Wei Xiong | 2022 | Neuroscience Bulletin2022，38，7： | 1 |
| 4 | 显示文摘 | LIUYao(刘瑶) CHENMeng(陈猛) WUHongBin(武洪彬) etal | | JApplSciTechnol(YingyongKeji)0，，： | 1 |
| 5 | Effects of window opening style on inside environment of solar greenhouse based on CFD simulation显示文摘Solar greenhouse is extensively used in horticultural production in China.Natural ventilation is one of the key technological means to adjust the inside environment of greenhouse,while the effects of window opening styles on the inside environment are still not well understood.In the present study,the temperature and air flow field of five operation styles,namely back roof central opening style(G1),back roof evenly spaced opening style(G2),top roof full opening style(G3),style of G1+G3,and style of G2+G3 were simulated using the CFD method.The results indicated that:(1)the simulated and measured results exhibited favorable agreement,with relative errors within 5%;(2)In the case of the windows opening area was the same and only single ventilation style was applied,back roof full opening style exhibited the best cooling effect.The inside average temperature of the greenhouse with G1 style decreased by 0.5°C and 1.6°C respectively compared with those of greenhouses with G2 and G3.(3)The cooling effect of the style of G2+G3 was more favorable than that of the style of G1+G3.The style of G2+G3 exhibited better cooling effect than the single ventilation styles,with the lowest temperature(27.5°C)and temperature uniformity coefficient(0.36). | Yachen Sun Encai Bao Chenmeng Zhu Lulu Yan Yanfei Cao Xuanhe Zhang Jianming Li Haiwei Jing Zhirong Zou | 2020 | International Journal of Agricultural and Biological Engineering2020，13，6： | 0 |
| 6 | Multi-Frequency-Ranging Positioning Algorithm for 5G OFDM Communication Systems显示文摘The accurate determination of vehicle location is of great research significance,considering challenges such as the multipath environment and the absence of Global Navigation Satellite System(GNSS)signals.In this particular environment,vehicles equipped with 5G wireless communication devices can enhance their positioning accuracy by exchanging information with infrastructure(vehicle-to-infrastructure,V2I).Therefore,in this paper,we propose a multifrequency ranging method and positioning algorithm specifically designed for 5G orthogonal frequency division multiplexing(OFDM)communication systems.Our approach involves selecting specific subcarriers within the OFDM communication system for transmitting ranging frames and capturing delay observations.Importantly,this selection does not affect the functionality of other subcarriers used for regular communication.By utilizing dedicated subcarriers for ranging and positioning,we achieve accurate vehicle location without significantly impacting communication capacity.We outline the method for selecting ranging subcarriers and describe the format of the ranging frame carried by these subcarriers.To evaluate the effectiveness of our system,we prove the Cramér-Rao lower bound of this ranging positioning system.The obtained ranging positioning accuracy meets the requirements for vehicle location applications.In our experimental simulations,we compare the performance of our system with other positioning methods,demonstrating its superiority.Additionally,we provide theoretical proofs and simulations that establish the relationship between ranging accuracy and channel parameters in a multipath environment.The simulation results indicate that,under the conditions of a 5 GHz frequency and a high signal-to-noise ratio,our system achieves a positioning accuracy of approximately 5 cm. | LI Wengang XU Yaqin ZHANG Chenmeng TIAN Yiheng LIU Mohan HUANG Jun | 2023 | Chinese Journal of Electronics2023，32，4： | 0 |
| 7 | Application performances of two greenhouses with new types of backwall in Yangling,China显示文摘In order to investigate the application performances of the solar greenhouses with new types of backwall(greenhouse W_(2),and greenhouse W_(3))and the ordinary clay brick backwall greenhouse(greenhouse W_(1)),and provide a theoretical basis for the construction of solar greenhouse in Yangling Demonstration Zone,Shaanxi,China,two greenhouses with different new types of backwall were designed.The backwall of one of them was built with lightweight aggregate concrete block(greenhouse W_(2))and that of the other one was assembled with a row of sand-filled cement pipes(greenhouse W_(3)).The tested greenhouses were constructed in Yangling Demonstration Zone.Based on the data collected on typical sunny and cloudy days,the indoor temperature,inside wall temperature,and the heat flow of the greenhouses with new types of backwall were compared with those detected in the ordinary clay brick backwall solar greenhouse,and the tested results were numerically simulated.According to the comparison of the physiological indicators of tomatoes planted in the greenhouses and the construction costs,the greenhouse type with the best practicability was found.The results indicated that:The average air temperature in greenhouses W_(1),W_(2),and W_(3)and outside was 15.1℃,15.9℃,17.3℃,and−0.4℃ on the night of a sunny day,and the air temperature in W_(3)was the highest.The average air temperature in greenhouses W_(1),W_(2),and W_(3)and outside were 9.5℃,13.3℃,11.0℃,and−5.5℃ on the night of a cloudy day,the air temperature in W_(2)was the highest.In the depth of 0-330 mm from the interface of the backwalls,the walls were obviously affected by the solar radiation,and the temperature changed greatly.The wall temperature on the sunny days exhibited an ascending order of W_(1),W_(2),W_(3),while on the cloudy days was in the ascending order of W_(1),W_(3),W_(2).The wall of W_(3)absorbed the most heat during the daytime and released the most heat at night on the sunny day,while W_(2)exhibited the second most heat absorption during the daytime,however,it exhibited the highest heat release at night on the cloudy day,which were almost equaled to its heat absorption.Tomatoes in W_(3)grew well and exhibited the highest yield,and this greenhouse had the lowest construction costs.Comprehensively considering the physiological indicators of tomatoes and the corresponding construction costs of greenhouses,W_(3)has the best application performance in Yangling Demonstration Zone. | Yachen Sun Haotian Wang Chenmeng Zhu Hongyi Lyu Xuanhe Zhang Yanfei Cao Jianming Li Zhirong Zou Encai Bao | 2022 | International Journal of Agricultural and Biological Engineering2022，15，3： | 0 |
| 8 | Preparation of stable jointed acid microspheres using wheel protein isolate-gum arabic Complex显示文摘Conjugated linoleic acid (CLA) microspheres stabilized.whey protein isolate (WPI)-gum arabic(GA) complex (WPI-GA ISCs) were prepared by the emusification relief method.the results showold that the solvent evacuation oriented in aggregation of the WPI-GA complex and sequential shrinkage and collapse of the WPI-GA interface,contributing to the picker layer.the emulsifying stability of the WPI-GA ISCS was improved,therapeutic preventing particle aggregation and CLA leakage.when the concentration of WPI-GA ISCS was higher than 1%,the ClA microspheres had good physical stability and resolution after freeze-drying with high efficiency of encapsulation and delivery. | Chenmeng Ji | 2019 | Probe-Food Science Research2019，1，1： | 0 |
| 9 | Sensitivity of solar greenhouse envelopes to the thermal disfigurements and optimal selection of the thermal insulation quilt显示文摘The objectives of the present work are focused on exploration of the reasons for temperature difference in different envelopes,the sensitivity of envelopes of solar greenhouse to thermal disfigurements and optimal selection of the thermal insulation quilt.Theoretical analysis and derivation are conducted according to the experimental results of surface temperature,convective heat transfer,and heat flux density in different envelopes which with thermal disfigurements of solar greenhouse using heat transfer theory.The results revealed that the difference of intrinsic thermal conductivity and thickness of the envelopes leads to difference in the thermal flux and thus in the surface temperature of different envelopes.Compared with the front roof and back roof,the wall is more sensitive to thermal disfigurements.According to the influence of thermal disfigurements on solar greenhouse temperature,the allowable thermal disfigurements area fraction of front roof and back roof are given.Based on the analysis of heat transfer theory and test results,the work given the expression of the thickness and thermal conductivity of thermal insulation quilt under different outdoor minimum temperatures for optimal selection of thermal insulation quilt based on comprehensive considering factors of the solar greenhouse structure,crop demand,outdoor minimum temperature,and insulation quilt properties.The results of this work give technical criterion for whether the envelopes with thermal disfigurements needs to be repaired or replaced,and it also provides theoretical and technical support for design the solar greenhouse as well as methodological guidance for the optimal selection of the thermal insulation quilt. | Yachen Sun Yao Zhang Chenmeng Zhu Shaonan Xu Bowen Liu Yanfei Cao Changji Zhou Yaqi Zhou Zhirong Zou Encai Bao | 2021 | International Journal of Agricultural and Biological Engineering2021，14，5： | 0 |
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