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与通信兼容的毫米波室内定位中角功率谱视距传输簇的识别方法

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电子与信息学报 2023年第7期45卷 2467-2475页

作者：吕鹏飞 SARRAZIN julien 黄默中国科学院微电子研究所北京100029 中国科学院大学北京100049 Sorbonne UniversitéParis France 75252

该文提出一种在室内无线定位中识别毫米波视距传输(LoS)的方法,在室内毫米波无线通信的波束训练框架下,实现了信道角功率谱(PAS)中视距角度簇的识别。该方法通过分水岭算法,将角功率谱聚类成簇,进而采用最大似然比和人工神经网络分析角... 详细信息

该文提出一种在室内无线定位中识别毫米波视距传输(LoS)的方法,在室内毫米波无线通信的波束训练框架下,实现了信道角功率谱(PAS)中视距角度簇的识别。该方法通过分水岭算法,将角功率谱聚类成簇,进而采用最大似然比和人工神经网络分析角度簇内5个不同信道指标,即空间对称性、冲激响应和传递函数的信号峰度、平均过度延迟和均方根(RMS)延迟扩展。仿真结果中可观察到视距和非视距(NLOS)角功率谱簇之间差异明显,并以实验验证了该识别方法的有效性。

关键词：室内定位视距传输识别毫米波信道角度域聚类分水岭分割

Linear synchronization and circuit implementation of chaotic system with complete amplitude control

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Chinese Physics B 2017年第12期26卷 124-133页

作者：李春彪 Wesley Joo-Chen Thio julien Clinton Sprott 张若洵陆天爱 Jiangsu Key Laboratory of Meteorological Observation and Information Processing Nanjing University of Information Science & Technology Nanjing 210044 China School of Electronic & Information Engineering Nanjing University of Information Science & Technology Nanjing 210044 China Department of Electrical and Computer Engineering The Ohio State University Columbus OH 43210 USA Department of Physics University of Wisconsin-Madison Madison WI 53706 USA College of Teacher Education Xingtai University Xingtai 054001 China

Although chaotic signals are considered to have great potential applications in radar and communication engineering, their broadband spectrum makes it difficult to design an applicable amplifier or an attenuator for amplitude conditioning. Moreover, the transformation between a unipolar signal and a bipolar signal is often required. In this paper, a more intelligent hardware implementation based on field programmable analog array （FPAA） is constructed for chaotic systems with complete amplitude control. Firstly, two chaotic systems with complete amplitude control are introduced, one of which has the property of offset boosting with total amplitude control, while the other has offset boosting and a parameter for partial control. Both cases can achieve complete amplitude control including amplitude rescaling and offset boosting. Secondly, linear synchronization is established based on the special structure of chaotic system. Finally, experimental circuits are constructed on an FPAA where the predicted amplitude control is realized through only two independent configurable analog module （CAM） gain values.

关键词： complete amplitude control amplitude rescaling offset boosting linear synchronization

Mixed-species aggregations in arthropods

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Insect Science 2019年第1期26卷 2-19页

作者： julien Boulay Cindy Aubernon Graeme D.Ruxton Valery Hedouin Jean-Louis Deneubourg Damien Charabidze CHU Lille Universite Lille 2EA 7367-UTML-Unite de Taphonomie Medico-LegaleLilleFrance School of Biology University of St. AndrewsDyers Brae HouseSt.AndrewsFifeUK Unit of Social Ecology-CP 231 Universite Libre de Bruxelles (ULB)Campus de la PlaineBoulevard du TriompheBrusselsBelgium

This review offers the first synthesis of the research on mixed-species groupings of arthropods and highlights the behavioral and evolutionary questions raised by such ***-species groups are commonly found in mammals and *** groups are also observed in a large range of arthropod taxa independent of their level of sociality. Several examples are presented to highlight the mechanisms underlying such groupings, particularly the evidence for phylogenetie proximity between members that promotes cross-species *** advantages offered by such aggregates are described and *** advantages can be attributed to the increase in group size and could be identical to those of nonmixed groupings,but competition-cooperation dynamics might also be involved,and such effects may differ between homo-and heterospecific *** discuss three extreme cases of interspecific recognition that are likely involved in mixed-species groups as vectors for cross-species aggregation:tolerance behavior between two social species,one-way mechanism in which one species is attractive to others and two-way mechanism of mutual *** shown in this review,the study of mixed-species groups offers biologists an interesting way to explore the frontiers of cooperation-competition, including the process of sympatric speciation.

关键词： collective behavior complex system cross-species recognition self-organization sociality

Cobalt,a reactive metal in releasing hydrogen from sodium borohydride by hydrolysis:A short review and a research perspective

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Science China Chemistry 2010年第9期53卷 1870-1879页

作者： DEMIRCI Umit B AKDIM Ouardia HANNAUER julien CHAMOUN Rita MIELE Philippe Université Lyon 1 CNRSUMR 5615Laboratoire des Multimatériaux et Interfaces

Cobalt is commonly admitted as being a promising catalyst in accelerating NaBH4 hydrolysis,being as reactive as noble metals and much more *** is the topic of the present ***,we survey(i) the NaBH4-devoted literature while especially focusing on the Co catalysts and(ii) our work on the same ***,we report(iii) reactivity results of newly developed Co-based *** both surveys,it mainly stands out that Co has been investigated as catalysts in various forms:namely,as chlorides,reduced nanoparticles(metal Co,Co boride,Co-B alloy),supported over supports and *** doing so the reactivity can be easily varied achieving H2 generation rates from few to >1000 L(H2)/min·g(metal).Nevertheless,our work can be distinguished from the NaBH4 ***,we are working on strategies that focus on making alternative Co-based *** of these strategies is illustrated here as we report new reactivity data of Co-based bimetallic supported *** example,we show that 20 wt% Co90Y10/γAl2O3-20 wt% Co95Hf5/γAl2O3 > 20 wt% Co99Zr1/γAl2O3 > 20 wt% Co/γAl2O3,the best catalysts showing HGRs of about 245 mL(H2)/min or 123 L(H2) /min·g(metals).

关键词： bimetallic catalyst cobalt heterogeneous catalysis hydrogen hydrolysis sodium borohydride sodium tetrahydroborate

Chloramination of wastewater effluent: Toxicity and formation of disinfection byproducts

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Journal of Environmental Sciences 2017年第8期29卷 135-145页

作者： julien Le Roux Michael J.Plewa Elizabeth D.Wagner Maolida Nihemaiti Azra Dad Jean-Philippe Croué LEESU(UMR MA 102) Université Paris-Est–AgroParisTech Department of Crop Sciences the Global Safe Water InstituteUniversity of Illinois at Urbana-Champaign Curtin Water Quality Research Centre Department of ChemistryCurtin University US Food and Drug Administration National Center for Toxicological Research

The reclamation and disinfection of waters impacted by human activities（e.g., wastewater effluent discharges） are of growing interest for various applications but has been associated with the formation of toxic nitrogenous disinfection byproducts（N-DBPs）. Monochloramine used as an alternative disinfectant to chlorine can be an additional source of nitrogen in the formation of N-DBPs. Individual toxicity assays have been performed on many DBPs, but few studies have been conducted with complex mixtures such as wastewater effluents. In this work, we compared the cytotoxicity and genotoxicity of wastewater effluent organic matter（Ef OM） before and after chloramination. The toxicity of chloraminated Ef OM was significantly higher than the toxicity of raw Ef OM, and the more hydrophobic fraction（HPO）isolated on XAD-8 resin was more toxic than the fraction isolated on XAD-4 *** DBPs were also isolated on the XAD-8 resin. N-DBPs（i.e., haloacetonitriles or haloacetamides） were responsible for the majority of the cytotoxicity estimated from DBP concentrations measured in the XAD-8 and XAD-4 fractions（99.4% and 78.5%, respectively）.Measured DBPs accounted for minor proportions of total brominated and chlorinated products, which means that many unknown halogenated compounds were formed and can be responsible for a significant part of the toxicity. Other non-halogenated byproducts（e.g.,nitrosamines） may contribute to the toxicity of chloraminated effluents as well.

关键词： Disinfection byproducts Chloramination Toxicity Wastewater XAD resins Haloacetonitriles Haloacetamides

Systemic chemotherapy for hepatocellular carcinoma in non-cirrhotic liver:A retrospective study

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World Journal of Gastroenterology 2009年第6期15卷 713-716页

作者： julien Edeline Jean-Luc Raoul Elodie Vauleon Anne Guillygomac'h Karim Boud jema Eveline Boucher Department of Medical Oncology Centre Eugène Marquis CS 4422935042 Rennes cedexFrance European University in Brittany 35042 Rennes cedexFrance Department of Liver Disease Pontchaillou University Hospital35033 Rennes cedexFrance Department of Liver Surgery and Transplantation Pontchaillou University Hospital35033 Rennes cedexFrance

AIM:To investigate the efficacy and toxicity of systemic chemotherapy in a retrospective study of patients with hepatocellular carcinoma(HCC)occurring in normal or fibrotic liver without cirrhosis. METHODS:Twenty-four patients with metastatic or locally advanced HCC in a normal or a fibrotic liver were given systemic chemotherapy(epirubicin,cis- platin and 5-fluorouracil or epirubicin,cisplatin and capecitabine regimens).Tumor response,time to pro- gression,survival,and toxicity were evaluated. RESULTS:There were 7 women and 17 men,mean age 54±10 years;18 patients had a normal liver and 6 had a fibrotic liver(F1/F2 on biopsy).Mean tumor size was 14 cm,5 patients had portal vein thrombosis and 7 had *** received a median of 4 chemotherapy *** tolerance was good. There were 5 partial responses(objective response rate =22%),and tumor control rate was 52%.Second line surgical resection was possible in two *** survival was 11 mo,and 1-and 2-year overall survival rates were 50%±10%and 32%±11%,respectively. CONCLUSION:In patients with HCC in a non-cirrhotic liver,chemotherapy was well tolerated and associated with an objective response rate of 22%,including two patients who underwent secondary surgical resection.

关键词： Antineoplastic protocols Chemotherapy Hepatocellular carcinoma

The ecology of sexual dimorphism in size and shape of the freshwater blenny Salaria fluviatilis

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Current Zoology 2018年第2期64卷 183-191页

作者： Martin LAPORTE Patrick BERREBI julien CLAUDE Dolors VINYOLES Quim Pou-RoVIRA Jean-Claude RAYMOND Pierre MAGNAN lnstitut des Sciences de I'Evolution de Montpellier (ISEM) UMR 5554 UM2-CNRS-IRD Universite de Montpellier II CC065 Place E. Bataillon Montpellier Cedex 534095 France Departement de Biologie Institut de Biologie Integrative et des Systemes (IBIS) Universite Laval Quebec Quebec City Canada G1V 0A6 Department of Evolutionary Biology Ecology and Environmental Sciences Faculty of Biology University of Barcelona Avda. Diagonal 643 Barcelona 08028 Spain Sorello estudis al medi aquatic Placa St. Pere 15 Baixos 17007 Girona Spain Office National de I'Eau et des Milieux Aquatiques (0NEMA) Unite Specialisee Milieux Lacustres Pisciculture de Rives 13 Quai de Rives Thonon-les-Bains 74200 France Centre de recherche sur les interactions bassins versants-ecosystemes aquatiques (RIVE) Universite du Quebec a Trois-Rivieres C. P. 500 Trois-Rivieres Quebec City Canada G9A 5H7

Sexual selection is considered the major cause of sexual dimorphism, but recent observations suggest that natural selection may play a more important role in the evolution of sex differentiation than previously recognized. Therefore, studying the trade-offs between natural selection and sexual selection is crucial to a better understanding of the ecology underlying the evolution of sexual dimorphism. The freshwater blenny Salaria fluviatilis, a fish inhabiting lakes and rivers around the Mediterranean Sea, displays strong sexual dimorphism in size, shape, and behavior （i.e., larger body and head size for males and higher swimming requirements for females during the reproductive period）. We tested for differences in sexual dimorphism in size and shape between the populations from lake and river habitats with the goal of identifying the trade-offs between natural and sexual se- lection that underlie variations in sexual dimorphism in this species. Our results show i） differences in sexual size dimorphism （SSizeD） in accordance to Rensch＇s rule （i.e., larger individuals in rivers associated with higher SSizeD）, and ii） a decrease in shape differentiation between males and fe- males in lake populations. Together, this suggests that the different environmental conditions between lake and river habitats （e.g., resource limitations, predation pressure, water velocity） affect the relative importance of sexual selection in the display of sexual dimorphism within the species. This study highlights the importance of considering the environmental conditions to which populations are exposed to better understand the ecology underlying the evolution of sexual dimorphism.

关键词： evolutionary ecology geometric morphometrics phenotype-environment interaction Rensch's rule sexual dimorphism.

Current Practice and Protocols: Endoscopic Laser Therapy for Twin-Twin Transfusion Syndrome

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Maternal-Fetal Medicine 2020年第1期2卷 34-47页

作者： Viral M.Pandya julien Stirnemann Claire Colmant Yves Ville Department of Obstetrics Fetal Medicine and SurgeryHôpital Necker Enfants MaladesAP-HPUniversitéde ParisParis 75015France

The pathophysiology of twin-to-twin transfusion syndrome(TTTS)is complex,and its understanding has evolved along with the evolution and revolution of fetal diagnostic and therapeutic *** the last few decades,several therapeutic interventions have been researched for improving the outcomes in *** present a summary of the current protocols for surveillance,diagnosis,and staging of TTTS in monochorionic *** also describe in detail the technique for treatment of TTTS by endoscopic laser photocoagulation.

关键词： Fetofetal transfusion Fetoscopy Laser photocoagulation Monochorionic twin Twin to twin transfusion syndrome

Synthesis of cleavable multi-functional mikto-arm star polymer by RAFT polymerization: example of an anti-cancer drug 7-ethyl-10-hydroxycamptothecin(SN-38) as functional moiety

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Science China Chemistry 2014年第7期57卷 995-1001页

作者： WEI XiaoHu GUNATILLAKE Pathiraja A MOAD Graeme RIZZARDO Ezio ROSSELGONG julien YANG WanTai THANG San H. College of Materials Science and Engineering Beijing University of Chemical Technology Materials Science and Engineering The Commonwealth Scientific and Industrial Research Organisation(CSIRO)

Multi-functional mikto-arm star polymers containing three different arms [hydrophilic, SN-38-P（OEGMAs_9）11, cationizable, SN-38-P（DMAEMA）3s and hydrophobic, SN-38-P（BMA）26] were prepared by RAFT polymerization via an arm-first approach using a cleavable cross-linker. The star polymers were cleaved to the linear arms with tributylphosphine as a reducing agent. The decrease in molecular weight observed is consistent with the initial stars having approximately five arms, Blue fluorescence was observed when a solution of mikto-arm star was irradiated under a 365 nm light proving the retention of the SN-38 moiety during star formation by RAFT polymerization. Thus these polymer-drug conjugates can be considered as potential delivery vehicles for cancer therapy. The P（DMAEMA） arms can be quaternized using iodomethane, allowing star polymers to bind negatively charged small interfering RNA （siRNA） and potentially be used as a carrier for that material.

关键词： RAFT mikto-arm star polymer-drug conjugate cleavable polymer siRNA delivery cancer therapy