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High-performance eight-channel system with fractal superconducting nanowire single-photon detectors

Chip 2024年第2期3卷 45-52页

作者： Zifan Hao Kai Zou Yun Meng Jun-Yong Yan Fangyuan Li Yongheng huo Chao-Yuan Jin feng Liu Thomas Descamps Adrian Iovan Val Zwiller Xiaolong Hu School of Precision Instrument and Optoelectronic Engineering Tianjin UniversityTianjin 300072China Key Laboratory of Optoelectronic Information Science and Technology Ministry of EducationTianjin 300072China State Key Laboratory of Modern Optical Instrumentation College of Information Science and Electronic EngineeringZhejiang UniversityHangzhou 300072China Hefei National Research Center for Physical Sciences at the Microscale and School of Physical Sciences University of Science and Technology of ChinaHefei 230026China Department of Applied Physics Royal Institute of Technology(KTH)SE-10691 StockholmSweden

Superconducting nanowire single-photon detectors(SNSPDs)have become a mainstream photon-counting technology that has been widely applied in various *** far,most multi-channel SNSPD systems,either reported in literature or commercially available,are polarization sensitive,that is,the system detection efficiency(SDE)of each channel is dependent on the state of polarization of the to-be-detected ***,we reported an eight-channel system with fractal SNSPDs working in the wavelength range of 930 to 940 nm,which are all featured with low polarization *** a close-cycled Gifford-McMahon cryocooler system with the base temperature of 2.2 K,we installed and compared the performance of two types of devices:(1)SNSPD,composed of a single,continuous nanowire and(2)superconducting nanowire avalanche photodetector(SNAP),composed of 16 cascaded units of two nanowires electrically connected in *** highest SDE among the eight channels reaches 96+^(4)_(-5%),with the polarization sensitivity of 1.02 and a dark-count rate of 13 counts per *** average SDE for eight channels for all states of polarization is estimated to be 90±5%.It is concluded that both the SNSPDs and the SNAPs can reach saturated,high SDE at the wavelength of interest,and the SNSPDs show lower dark-count(false-count)rates,whereas the SNAPs show better properties in the time *** the adoption of this system,we showcased the measurements of the second-order photon-correlation functions of light emission from a singlephoton source based on a semiconductor quantum dot and from a pulsed *** is believed that this work will provide new choices of systems with single-photon detectors combining the merits of high SDE,low polarization sensitivity,and low noise that can be tailored for different applications.

关键词： Superconducting nanowire single-photon detector Superconducting strip photon detector Fractal Quantum optics Photon correlation

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Edge computing oriented virtual optical network mapping scheme based on fragmentation prediction

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High Technology Letters 2024年第2期30卷 158-163页

作者：何烁 BAI Huifeng huo Chao ZHANG Ganghong China Internet Network Information Center Beijing 100190P.R.China Beijing SmartChip Microelectronics Technology Company Limited Beijing 100089P.R.China

As edge computing services soar,the problem of resource fragmentation situation is greatly worsened in elastic optical networks(EON).Aimed to solve this problem,this article proposes the fragmentation prediction model that makes full use of the gate recurrent unit(GRU)*** on the fragmentation prediction model,one virtual optical network mapping scheme is presented for edge computing driven *** the minimum of fragmentation degree all over the whole EON,the virtual network mapping can be successively *** results show that the proposed approach can reduce blocking rate,and the supporting ability for virtual optical network services is greatly improved.

关键词： elastic optical networks virtual optical network fragmentation self-awareness edge computing

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Current practice in autologous rib and costal-cartilage harvest for rhinoplasty:A systematic review

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Chinese Journal of Plastic and Reconstructive Surgery 2024年第1期6卷 41-48页

作者： Mengyuan Jiang Haizhong huo Lu Zhang Department of Plastic and Reconstructive Surgery Shanghai Ninth People’s HospitalShanghai Jiao Tong University School of MedicineShanghai 200011China Department of General Surgery Shanghai Ninth People’s HospitalShanghai Jiao Tong University School of MedicineShanghai 200011China

Background:Autologous costal grafts are used universally in clinical practice for rhinoplasty and ***,surgeons worldwide have not agreed on the details of graft harvesting,including rib selection,side preference,operation mode,cutting methods,and handling of the periosteum and *** study aimed to provide an overview of the novel techniques used for auto-rib harvesting in rhinoplasty within the past 5 years and identify potential avenues for future ***:We searched for related articles in PubMed,Embase,and Web of Science from 2019 to 2023,summa-rized crucial but controversial steps in recent practice,and analyzed their theoretical basis and clinical ***:Auto-rib and cartilage open harvest is still mainstream in rhinoplasty and reconstruction,with the 5th to 8th ribs and cartilage being the most *** laparoscopic harvest is gaining attention,being second only to the open harvest,with the 9th/10th ribs and cartilages being particularly *** clinical applications of full-cut and split-cut methods differ in their *** for some special reasons,almost all studies tended to preserve the periosteum and perichondrium in situ,and few surgeons chose to harvest the grafts on the left ***:Multiple techniques have emerged,requiring surgeons to balance the benefits and risks of various strategies at each *** theories and techniques should be fully tested promptly and in clinical practice before wide ***,a professional consensus is needed for better directivity,precision,and stability in clinical practice.

关键词： Rhinoplasty Autologous graft Cartilage Rib Periosteum Perichondrium

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Heterologous expression facilitates the discovery and characterization of marine microbial natural products

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Engineering Microbiology 2024年第2期4卷 77-90页

作者： Shuang Zhao Ruiying feng Yuan Gu Liyuan Han Xiaomei Cong Yang Liu Shuo Liu Qiyao Shen Liujie huo Fu Yan State Key Laboratory of Microbial Technology Shandong UniversityQingdao 266237China Helmholtz-Institute for Pharmaceutical Research Saarland Saarland University Campus66123SaarbrückenGermany

Microbial natural products and their derivatives have been developed as a considerable part of clinical drugs and agricultural *** microbial natural products exhibit diverse chemical structures and bioactivities with substantial potential for the development of novel ***,discovering compounds with new skeletons from marine microbes remains *** recent decades,multiple approaches have been de-veloped to discover novel marine microbial natural products,among which heterologous expression has proven to be an effective *** by large DNA cloning and comparative metabolomic technologies,a few novel bioactive natural products from marine microorganisms have been identified by the expression of their biosynthetic gene clusters(BGCs)in heterologous *** expression is advantageous for character-izing gene functions and elucidating the biosynthetic mechanisms of natural *** review provides an overview of recent progress in heterologous expression-guided discovery,biosynthetic mechanism elucidation,and yield optimization of natural products from marine microorganisms and discusses the future directions of the heterologous expression strategy in facilitating novel natural product exploitation.

关键词： Marine natural products Heterologous expression Biosynthetic gene clusters Biosynthetic mechanism

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Energy-efficient computation offloading assisted by RIS-based UAV

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The Journal of China Universities of Posts and Telecommunications 2024年第1期31卷 37-48页

作者： Li Linpei Zhao Chuan Su Yu huo Jiahao Huang Yao Li Haojin School of Intelligence Science and Technology University of Science and Technology BeijingBeijing 100083China Institute of Artificial Intelligence University of Science and Technology BeijingBeijing 100083China Shunde Innovation School University of Science and Technology BeijingFoshan 528399China School of Computer and Communication Engineering University of Science and Technology BeijingBeijing 100083China Research Department of 5G and Drone China Mobile(Chengdu)Institute of Research and DevelopmentChengdu 610200China College of Communication Engineering Chengdu University of Information TechnologyChengdu 610225China Research and Development Center Sony(China)LimitedBeijing 100027China

The new applications surge with the rapid evolution of the mobile *** explosive growth of the data traffic aroused by the new applications has posed great computing pressure on the local *** is essential to innovate the computation offloading methods to alleviate the local computing burden and improve the offloading *** edge computing(MEC)assisted by reflecting intelligent surfaces(RIS)-based unmanned aerial vehicle(UAV)is a promising method to assist the users in executing the computation tasks in proximity at low *** this paper,we propose an energy-efficient MEC system assisted by RIS-based UAV,where the UAV with RIS mounted relays the computation tasks to the MEC *** energy efficiency maximization problem is formulated by jointly optimizing the UAV's trajectory,the transmission power of all users,and the phase shifts of the reflecting elements placed on the *** that the optimization problem is non-convex,we propose a deep deterministic policy gradient(DDPG)-based *** combining the DDPG algorithm with the energy efficiency maximization problem,the optimization problem can be ***,the numerical results are illustrated to show the performance of the system and the superiority compared with the benchmark schemes.

关键词： mobile edge computing unmanned aerial vehicle reflecting intelligent surface

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Rice canopy temperature is affected by nitrogen fertilizer

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Journal of Integrative Agriculture 2024年第3期23卷 824-835页

作者： Min Jiang Zhang Chen Yuan Li Xiaomin Huang Lifen Huang Zhongyang huo Jiangsu Key Laboratory of Crop Genetics and Physiology/Jiangsu Key Laboratory of Crop Cultivation and Physiology/Agricultural College Yangzhou UniversityYangzhou 225009China Jiangsu Co-lnnovation Center for Modern Production Technology of Grain Crops Yangzhou UniversityYangzhou 225009China

Canopy temperature strongly influences crop yield formation and is closely related to plant physiological ***, the effects of nitrogen treatment on canopy temperature and rice growth have yet to be comprehensively examined. We conducted a two-year field experiment with three rice varieties(HD-5, NJ-9108, and YJ-805) and three nitrogen treatments(zero-N control(CK), 200 kg ha~(–1)(MN), and 300 kg ha~(–1)(HN)). We measured canopy temperature using a drone equipped with a high-precision camera at the six stages of the growth period. Generally,canopy temperature was significantly higher for CK than for MN and HN during the tillering, jointing, booting, and heading stages. The temperature was not significantly different among the nitrogen treatments between the milky and waxy stages. The canopy temperature of different rice varieties was found to follow the order: HD-5>NJ-9108>YJ-805, but the difference was not significant. The canopy temperature of rice was mainly related to plant traits, such as shoot fresh weight(correlation coefficient r=–0.895), plant water content(–0.912), net photosynthesis(–0.84), stomatal conductance(–0.91), transpiration rate(–0.90), and leaf stomatal area(–0.83). A structural equation model(SEM) showed that nitrogen fertilizer was an important factor affecting the rice canopy *** study revealed:(1) A suite of plant traits was associated with the nitrogen effects on canopy temperature,(2) the heading stage was the best time to observe rice canopy temperature, and(3) at that stage, canopy temperature was negatively correlated with rice yield, panicle number, and grain number per panicle. This study suggests that canopy temperature can be a convenient and accurate indicator of rice growth and yield prediction.

关键词： canopy temperature rice physiological and biochemical characteristics yield

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Numerical Study on the Effect of Gap Diffraction on the Hydrodynamic Performance of A Floating Breakwater

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China Ocean Engineering 2024年第4期38卷 663-675页

作者： BIAN Xiang-qian JI Chun-yan XU Sheng GUO Jian-ting huo Fa-li School of Naval Architecture and Ocean Engineering Jiangsu University of Science and TechnologyZhenjiang 212100China

Two-dimensional(2D)flume experiments are useful in investigating the performances of floating breakwaters(FBs),including hydrodynamic performances,motion responses,and mooring *** a reasonable gap between the flume wall and the FBs is a critical step in 2D flume ***,research on the effect of the gap on the accuracy of 2D FB experimental results is *** address this issue,a numerical wave tank is developed using CFD to estimate the wave-FB interaction of a moored dual-cylindrical FB,and the results are compared to experimental data from a previously published *** is good agreement between them,indicating that the numerical model is sufficiently *** numerical model is then applied to explore the effect of gap diffraction on the performance of FBs in2D *** was discovered that the nondimensional gap length L_(Gap)/W_(Pool)should be smaller than 7.5%to ensure that the relative error of the transmission coefficient is smaller than 3%.The influence of the gap is also related to the entering wave properties,such as the wave height and period.

关键词： floating breakwater diffraction effect gap hydrodynamic performance model experiments CFD numerical simulation

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扁平足患者足底压力与足底感觉特征

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医用生物力学 2024年第2期39卷 278-284页

作者：冯亮霍洪峰河北师范大学体育学院石家庄050024 河北省人体运动生物信息测评重点实验室河北石家庄050024

目的探究不同足型人群足底压力与足底感觉之间的关系,为扁平足患者损伤评价以及运动恢复提供理论参考。方法通过三维足型扫描仪,对招募的受试者进行初步筛查;根据足弓指数进行组别划分,正常足组16人,扁平足组16人。使用Footscan高频足... 详细信息

目的探究不同足型人群足底压力与足底感觉之间的关系,为扁平足患者损伤评价以及运动恢复提供理论参考。方法通过三维足型扫描仪,对招募的受试者进行初步筛查;根据足弓指数进行组别划分,正常足组16人,扁平足组16人。使用Footscan高频足底压力测试系统和Semmes-Weinstein Monofilaments单丝测试分别进行组别间的足底压力和足底感觉测试。对测试结果进行统计描述和相关性分析。结果扁平足组左右足弓与左右足跟内侧区域的足底压力冲量相较于正常足组存在显著增加的趋势(P<0.05);扁平足组第1跖骨以及足弓位置的足底感觉阈值相较于正常足组更低(P<0.05);扁平足组左脚(P=0.012,R=0.500)和右脚(P=0.021,R=0.341)足弓位置的足底感觉与足底压力之间存在显著的正相关。结论扁平足人群足弓降低和过度外翻的结构特点,导致其足弓和足跟内侧位置的足底压力冲量增大,足底感觉敏感性阈值降低;同时,足底感觉与足底压力之间存在相关性,足弓足底压力冲量负荷越大,足底感觉阈值越低。

关键词：扁平足足底压力足底感觉相关性分析

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Review of Baduanjin and resistance exercise for the mental health of patients with hematologic malignancies

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World Journal of Psychiatry 2024年第8期14卷 1165-1173页

作者： Ya-Zhou Shen feng Chen Jia-Wen Yu Yan Zhang Ling-Xiang Lu Yong-Li huo Si-Ting Chu Bing Cao Lei-Wen Tang Department of Nursing Sir Run Run Shaw HospitalZhejiang University School of MedicineHangzhou 310000Zhejiang ProvinceChina Department of Nursing The Second Affiliated Hospital of Zhejiang University School of MedicineHangzhou 310000Zhejiang ProvinceChina

Patients with hematological tumors experience physical and psychological stress,and negative psychological ***,an emerging psychological rehabil-itation method combined with resistance exercise,has received widespread *** study reviews the current status of the application of Baduanjin combined with resistance exercise in improving the negative psychological state of patients with hematological tumors and discusses its problems and *** a literature review and comprehensive analysis,the application of Baduanjin and resistance exercise in the psychological rehabilitation of patients with hematological tumors was identified and *** results showed that Baduanjin with resistance exercise had a positive effect on improving negative psychological states of patients with hematological tumors,which can alleviate anxiety,depression,and other adverse emotions,and improve quality of ***,there is a lack of unified and standardized exercise intervention programs for practical application,and patient participation and compliance must be *** combined with resistance exercise can potentially improve the negative psychological status of patients with hematological tumors;however,it is still necessary to further standardize and improve the exercise program improving patient participation and *** studies should strengthen theoretical exploration and empirical research,providing more effective psychological rehabilitation strategies for patients with hematological tumors.

关键词： Hematological tumors Baduanjin Resistance exercise Negative psychological state Psychological rehabilitation

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Astragalus polysaccharide orβ-glucan combined with inactivated vaccine markedly prevent CyHV-2 infection in Carassius auratus gibelio

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Aquaculture and Fisheries 2024年第5期9卷 763-775页

作者： Xingchen huo yiyi Yan Jiao Chang Jianguo Su Department of Aquatic Animal Medicine College of FisheriesHuazhong Agricultural UniversityWuhan430070China Laboratory for Marine Biology and Biotechnology Pilot National Laboratory for Marine Science and TechnologyQingdao266237China Hubei Hongshan Laboratory Engineering Research Center of Green Development for Conventional Aquatic Biological Industry in the Yangtze River Economic BeltMinistry of EducationWuhan430070China

Herpesviral hematopoietic necrosis disease caused by cyprinid herpesvirus 2(CyHV-2)results in huge economic losses for the gibel carp(Carassius auratus gibelio)aquaculture industry.A vaccination strategy is a feasible method to prevent CyHV-2 infection and the resulting economic *** this study,inactivators(includingβ-propiolactone,formaldehyde and binary ethylenimine)were used to prepare an inactivated *** optimal inactivated CyHV-2 vaccine(0.2%β-propiolactone inactivates CyHV-2 for 48 h)mixed withβ-glucan,anisodamine,chitosan,and astragalus polysaccharide(APS)adjuvants were injected into gibel ***β-glucan and APS combined with inactivated vaccine significantly improved the relative immune protection rate of gibel carp against CyHV-2 *** highest specific antibody levels inβ-glucan and APS groups were found in serum by ELISA assay and antibody neutralization ***,adjuvant addition groups produced better results for lysozyme,total superoxide dismutase,and complement C3 in serum.β-glucan and APS combined with vaccine treatment effectively enhanced mRNA expressions of important immune genes(IL-1β,IgM,IL-2 and IFN-γ2).Minimal tissue lesions(gill,spleen,and head kidney)and virus replication were seen in theβ-glucan and APS groups by histopathological examination and expression analysis of CyHV-2 TK *** results indicated that the combination of inactivated vaccine and adjuvantβ-glucan or APS is an effective method against CyHV-2 infection and provided a case study reference for prevention of fish viral diseases using inactivated vaccines.

关键词： Carassius auratus gibelio Cyprinid herpesvirus 2(CyHV-2) β-glucan Adjuvant Astragalus polysaccharide(APS) Vaccine

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