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Monitoring and identification of spoilage-related microorganisms in braised chicken with modified atmosphere packaging during refrigerated storage

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Food science and Human Wellness 2023年第1期12卷 28-34页

作者： Yang Lei Yali Zhang Yiqun Cheng Jichao Huang Ming Huang Key Laboratory of Meat Processing and Quality Control Ministry of EducationCollege of Food Science and TechnologyNanjing Agricultural UniversityNanjing 210095China National R&D Center for Poultry Processing Jiangsu Research Center for Livestock and Poultry Products Processing Engineering TechnologyNanjing Huangjiaoshou Food Science and Technology Co.Ltd.Nanjing 211225China College of Environmental Science&Engineering Institute of Functional FoodAnhui Normal UniversityWuhu 241000China College of Engineering Nanjing Agricultural UniversityNanjing 210031China

This study mainly monitored the dominant bacterial populations and identified the spoilage-related microorganisms of braised chicken meat stored under different CO_(2)-modified atmosphere packaging(MAP)during refrigerated storage using a culture-dependent method and 16S rDNA *** quality changes and shelf life of the meat were also *** growth rate of total viable count(TVC)in braised chicken was slower with an increase of CO_(2) content in MAP,which also occurred in the remaining bacterial species monitored(lactic acid bacteria,Pseudomonas spp.,Brochothrix thermosphacta).The MAP exerted beneficial effects on the quality of braised chicken,as demonstrated by retarding the production of total volatile basic nitrogen(TVB-N)and delaying lipid oxidation(TBARS test).A total of 14 isolates were identified from braised chickens with different packaging at the end of storage,these included ***(6 isolates),***(2 isolates),Enterococcus faecalis(3 isolates),***(2 isolates),Staphylococcus equorum(1 isolate).

关键词： Braised chicken Modified atmosphere packaging(MAP) 16S rDNA identification Shelf-life

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Noise Immune Coherent Scanning Interferometry Based on Fourier Domain Analysis of Intensity Difference Square

SSRN

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SSRN 2024年

作者： Chen, Weiwei Chen, Shanyong Luo, Gangjie Liu, Junfeng College of Intelligence Science and Technology National University of Defense Technology Changsha410073 China Laboratory of Science and Technology on Integrated Logistics Support National University of Defense Technology Changsha410073 China Hunan Key Laboratory of Ultra-Precision Machining Technology Changsha410073 China

Coherent scanning interferometry (CSI) has the obvious advantages for nondestructive, high efficiency and high precision which is widely used in micro-nano surface metrology. CSI realizes the reconstruction of surface topography based on a series of interferograms obtained during vertical scanning. This paper discusses the source of interferograms noise and denoising methods, and analyzes the influence of interferogram noise on topography reconstruction. Aiming at solving the heavy and time-consuming task for denoising of a large number of interferograms and the demand for real-time online measurement in modern optics, a noise immune surface metrology method based on signal analysis and processing technology on light intensity difference square (IDS) is proposed. Based on the method proposed in this paper, the surface topography reconstruction can be accurately realized without preprocessing for the interferograms denoising. Finally, the proposed method is verified by simulation and measurement experiments. © 2024, The Authors. All rights reserved.

关键词： Interferometry

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A Novel Multiple Modes Resonant Sensor Featuring Blue Sideband Excitation 38

A Novel Multiple Modes Resonant Sensor Featuring Blue Sideba...

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38th IEEE International Conference on Micro Electro Mechanical Systems, MEMS 2025

作者： Xu, Jiao Zheng, Zhuoyue Xi, Jingqian Zhang, Ziqian Liu, Huafeng Zhang, Pan Chen, Jianlin Wang, Chen Kraft, Michael Wang, Yuan Martins, R.P. Mak, Pui-In Huazhong University of Science and Technology Moe Key Laboratory of Fundamental Physical Quantities Measurement Pgmf School of Physics Wuhan430074 China University of Macau Institute of Microelectronics State Key Laboratory of Analog and Mixed-Signal Vlsi 999078 China Peking University National Key Laboratory of Advanced Micro and Nano Manufacture Technology School of Integrated Circuits 100871 China Shanghai University School of Microelectronics 200444 China Ku Leuven Department of Electrical Engineering-MNS Leuven3000 Belgium

ISBN: (纸本)9798331508890

This paper reports a novel MEMS resonant structure functioning as a baseline resonant electrostatic force/temperature sensor, highlighting its substantial potential in sensing applications. The resonator, characterized by a dual-cosine structure, is capable of simultaneous multiple resonant modes actuation within the 300 kHz range, through a sole-source drive approach using the recent emerging Blue Sideband Excitation (BSE) technique. This method enables a distinctive multi-modal response, essential for multi-parameter measurements. The research focuses on the sensor's temperature characteristics, electrostatic perturbation sensitivity, and noise floor. Notably, the study reveals intriguing temperature responses across different modes, where certain modes exhibit a significant frequency rise with increasing temperature, this is counter-intuitive with common MEMS resonator devices, prompting further investigation into the underlying mechanisms. The analysis of electrostatic perturbation sensitivity and noise background further unfolds the resonator's performance under various excitation conditions, laying a foundation for advancing sensor functionality, and providing solid evidence on the viability of the subject. To sum up, this study highlights the resonator's potential as a high-precision sensor, opening new opportunities for MEMS sensor design and multi-parameter measurement applications. © 2025 IEEE.

关键词： Microchannels

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Patient-centric care: Unveiling the potential of wearable electronics in clinical practice

Wearable Electronics

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Wearable Electronics 2024年 1卷 119-136页

作者： Pengcheng Zhao Jie Xu Mengdi Han Department of Biomedical Engineering College of Future Technology National Key Laboratory of Science and Technology on Micro/Nano Fabrication Peking University Beijing China School of Integrated Circuits Peking University Beijing China

Wearable electronics have the capability to monitor human activities and various physiological indicators in a real-time, continuous, non-invasive, and wireless manner, making them a valuable complement to traditional clinical health monitoring technologies. Currently, the adoption of specialized and reliable wearable electronics for disease diagnosis, monitoring, and treatment is flourishing. This article delves into the development of wearable electronics from a clinical application perspective, examining the application modes, mechanisms, and benefits of (1) commercial wearable electronics, (2) customized wearable electronics, and (3) customized flexible electronics in clinical settings. The focus of the article is on analyzing the diverse forms of electronic systems utilizing mechanical, thermal, optical, electrophysiological, and electrochemical technologies, in alignment with clinical application requirements. Furthermore, the article outlines the challenges encountered by wearable electronics in clinical environments and discusses potential future directions for wearable electronics in clinical applications.

关键词： Wearable electronics Clinical application Flexible electronics

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Effects and Modeling Study on FDSOI MOSFETs at Cryogenic Temperature

Effects and Modeling Study on FDSOI MOSFETs at Cryogenic Tem...

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International Conference on Solid-State and integrated Circuit technology

作者： Zhipeng Ren Yibo Hu Yizhe Yin Ruiyong Zhao Jing Chen National Key Laboratory of Integrated Circuits Shanghai Institute of Microsystem and Information Technology Chinese Academy of Science Shanghai China

ISBN: (数字)9798350361834

ISBN: (纸本)9798350361841

In this work, we systematically investigate the impact of various performance metrics of 22nm FDSOI technology devices when operated at cryogenic temperatures. It establishes a cryogenic-temperature TCAD simulation model, delves into the back-gate effect and self-heating effect under cryogenic conditions, develops a parameter extraction flow applicable across the full temperature range and elucidates the temperature dependency of critical parameters. The BSIM model is revised with a fitting accuracy below 5%. Additionally, focusing on the cryogenic-temperature RF characteristics of the devices, substrate effects and gate parasitic network characteristics are characterized using an RC network, leading to the establishment of a comprehensive sub-circuit topology.

关键词： Semiconductor device modeling Radio frequency Temperature distribution Temperature dependence Computational modeling Silicon-on-insulator Cryogenics Topology integrated circuit modeling Substrates

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Sea cucumber gut tetrapeptide ameliorates alcoholic gastric damage via restoring mitochondrial dynamics

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Food science and Human Wellness 2025年第5期14卷 1921-1946页

作者： Zhihong Zheng Na Sun Jingqi Yang Zhijie Bao Songyi Lin State Key Laboratory of Marine Food Processing and Safety Control School of Food Science and TechnologyDalian Polytechnic UniversityDalian 116034China National Engineering Research Center of Seafood School of Food Science and TechnologyDalian Polytechnic UniversityDalian 116034China Collaborative Innovation Center of Seafood Deep Processing Dalian Polytechnic UniversityDalian 116034China Liaoning Engineering Research Center of Special Dietary Food Dalian Polytechnic UniversityDalian 116034China

This paper aimed to explore the mechanism of tetrapeptide Val-Thr-Pro-Tyr(VTPY)in improving alcoholic gastric *** has the potential to enhance the growth and movement of normal human gastric epithelial cells(GES-1).Following ethanol-induced impairment,VTPY effectively improved migration of GES-1 and human umbilical vein endothelial cells(HUVEC)cells,enhanced angiogenesis,eliminated cellular and mitochondrial reactive oxygen species(ROS),inhibited excessive mitochondrial division,enhanced F-actin polymerization and mitochondrial respiratory *** counteract excessive mitochondrial fission,VTPY primarily restores the mitochondria dynamics by reducing the expression of Drpl and Fis1,while increasing *** studies utilizing inhibitors clarifies that the inhibition of excessive mitochondrial fission can markedly reduce F-actin depolymerization,consequently enhancing cell ***,VTPY can inhibit the apoptosis pathway by maintaining potential of mitochondrial membrane,preventing the release of mitochondrial cytochrome C,bolstering the levels of Bcl-XL,while reducing the levels of Bax and *** investigations using inhibitors demonstrates that excessive mitochondrial fission could activate apoptotic ***,VTPY counteracts this effect and enhance cells *** evidence suggests that VTPY effectively improves ulcer index and pathologic changes,relieves inflammation,enhances the balance of oxidation and anti-oxidation,promotes angiogenesis,improves the expression of mitochondrial dynamics factors,blocks apoptotic pathway,and subsequently ameliorates gastric damage in mice through Fis-1/Bcl-2 pathway.

关键词： Sea cucumber peptide Mitochondrial fission Cell migration Ethanolic gastric mucosa damage Angiogenesis

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Angle-Multiplexed Terahertz Frequency-Selective Fingerprint Sensor: Broadband Identification of Chiral Enantiomers

Angle-Multiplexed Terahertz Frequency-Selective Fingerprint ...

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IEEE International Conference on Micro Electro Mechanical Systems

作者： Hongshun Sun Yunhao Cao Yusa Chen Liye Li Lijun Ma Shengxiao Jin Guodong Gu Zhihong Feng Wengang Wu National Key Laboratory of Advanced Micro and Nano Manufacture Technology School of Integrated Circuits Peking University Beijing China CAST National Key Laboratory of Science and Technology on Space Microwave Xi'an China National Key Laboratory of Solid-State Microwave Devices and Circuits Shijiazhuang China

ISBN: (数字)9798331508890

ISBN: (纸本)9798331508906

Chiral enantiomers exhibit distinct pharmacological and pharmacokinetic properties, which must be strictly detected to avoid any adverse effects on the human body. Conventional terahertz (THz) detection methods present a significant challenge in trace amount analysis and broadband detection of analytes. Guided-mode resonance (GMR) metasurfaces are employed to enhance light-matter interaction, and a THz wave-angle scanning method is proposed for the successful identification of chiral glutamic. This method involves adjusting the incidence angle (20°-45°) to enhance broadband signals (0.95-1.45 THz) for molecular fingerprinting. The study provides a method for highly sensitive and versatile miniature THz spectroscopic devices.

关键词： Reflectivity Resonant frequency Modulation Fingerprint recognition Metasurfaces Resonance Broadband communication Sensors Pharmacokinetics Tuning

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Polarization-insensitivity and rapid-calibration optical delay line on 3-μm-thick SOI photonics platform 4

Polarization-insensitivity and rapid-calibration optical del...

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4th International Conference on Laser, Optics, and Optoelectronic technology, LOPET 2024

作者： Li, Ang Zhao, Nengyang Liu, Chenyang Ding, Yanyue Wang, Ruxue Qiu, Chao Wu, Aimin National Key Laboratory of Materials for Integrated Circuits Shanghai Institute of Microsystem and Information Technology Chinese Academy of Sciences 865 Changning Road Shanghai200050 China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of Sciences Beijing100049 China

ISBN: (纸本)9781510681903

We design, fabricate, and characterize a polarization-insensitivity 8-bit optical tunable delay line (OTDL) on the 3-μm-thick silicon-on-insulator (SOI) platform, employing low-loss waveguide spirals and rapid-calibrated integrated optical switches. The spirals integrate mode converters and Euler bends, have high fabrication tolerance, low wavelength-sensitivity, and propagation loss as low as 0.32 dB/cm within 140 nm bandwidth. The 4-cm-length waveguide spiral has polarization dependent loss (PDL) less than 0.3 dB within 140nm bandwidth. OTTDL utilizes optical switches with extinction ratio (ER) of up to 50 dB for path switching. The switch integrated multimode interferences (MMIs), thermo-optic phase shifter and variable optical attenuators (VOAs). VOAs not only enhance the delay signal-to-noise ratio, but also facilitate rapid calibration in OTDLs. With maximum delay time of 3570 ps and resolution of 14 ps, our OTDL holds significant promise for future applications, particularly in the integration of delay line arrays for microwave photon radar systems. © 2024 SPIE.

关键词： Microwave photonics

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Dynamic vanishing characteristics of confined microbubbles during protein patterning 26

Dynamic vanishing characteristics of confined microbubbles d...

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26th International Conference on Miniaturized Systems for Chemistry and Life sciences, MicroTAS 2022

作者： Guo, Yechang Hun, Tingting Li, Peiyue Yang, Zhou Wang, Shaofeng Wang, Hao Zhang, Pan Wang, Wei School of Integrated Circuits Peking University Beijing China National Key Laboratory of Science and Technology on Micro/Nano Fabrication Beijing China Beijing China

ISBN: (纸本)9781733419048

Protein patterning is significant in cell engineering, and we have developed a protein patterning method based on Parylene C porous membrane (PCPM). But there are microbubbles generated during the operation procedure due to air trapping. In this work, we propose an air compression-dissolution-diffusion (ACDD) model to describe the trapped air depletion process and simulates this process based on commercially available COMSOL Multiphysics software. The simulated results match the experimental results perfectly and reveal that both the porosity of the membrane and micropore sizes determine the lifetime of the micropore-confined microbubbles. © 2022 MicroTAS 2022 - 26th International Conference on Miniaturized Systems for Chemistry and Life sciences. All rights reserved.

关键词： Dissolution

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Anomaly detection of gas flow meter based on improved GAN

Anomaly detection of gas flow meter based on improved GAN

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2022 Chinese Automation Congress, CAC 2022

作者： Hao, Weiguang Yi, Junbo Ping, Zuowei Liang, Yingjie Jin, Junyang Zhang, Yong Wuhan University of Science and Technology School of Information Science and Engineering Wuhan China Naval University of Engineering National Key Laboratory of Science and Technology on Vessel Integrated Power System Wuhan China Wuxi Research Institute Huazhong University of Science and Technology Wuxi China

ISBN: (纸本)9781665465335

As one of the core equipment in the gas industry, gas flow meter guides the operation and maintenance of gas companies and reflects the gas consumption habits of downstream users. Therefore, the anomaly detection of gas flow meter has important theoretical value and practical significance. However, the sensors of the gas flow meter are coupled with each other, and the collected data has the characteristics of difficult to collect negative samples. For the solution of the above challenges, an approach to unsupervised anomaly detection based on generative adversarial networks (GAN) is introduced in this paper. Firstly, after the flow meter signal is processed with the data screening, the Savitzky Golay (S-G) filter can filter out the noise from the raw data. The information between channels is captured by the feature attention module for improving the accuracy of the potential representation of samples, in addition, residual blocks are used to prevent the network degradation phenomenon in the deep network. Finally, the proposed model was demonstrated to be valid by using the actual user gas flow meter data. Compared with the current popular depth learning methods, the experimental results reveal that the proposed method can be very accurate in terms of ACC and F1 scores. © 2022 IEEE.

关键词： Gas industry

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