检索结果-南通市图书馆

保证IoT安全:第二部分——安全引导,嵌入式设备的“信任根”

在线全文

学校读者我要写书评

暂无评论

中国集成电路 2015年第7期24卷 41-45页

作者： Yann Loisel stephane di vito Maxim Integrated

引言本文是物联网（IoT）安全主题系列文章的第二部分。在当今互连世界,电子设备的安全性必不可少,大量证据[1]表明,当IoT上某台设备的安全遭到威胁时,您必须提防甚至怀疑该设备以及整个IoT。您一定不能依赖被黑的设备进行数据交换、处... 详细信息

引言本文是物联网（IoT）安全主题系列文章的第二部分。在当今互连世界,电子设备的安全性必不可少,大量证据[1]表明,当IoT上某台设备的安全遭到威胁时,您必须提防甚至怀疑该设备以及整个IoT。您一定不能依赖被黑的设备进行数据交换、处理或存储。

关键词： IoT 嵌入式设备数据交换物联网签名验证认证机构私钥数字内容校验和数字签名

Could near infrared spectroscopy be the new weapon in our understanding of the cerebral and muscle microvascular oxygen demand during exercise?

在线全文

学校读者我要写书评

暂无评论

Journal of Sport and Health Science 2024年第4期13卷 457-458页

作者： stephane Perrey EuroMov digital Health in Motion University of MontpellierIMT Mines AlesMontpellier 34090France

Near-infrared spectroscopy(NIRS)has been increasingly utilized in both sport and health sciences to assess various physiological parameters related to exercise performance.1 NIRS methods coupled with the recent development of portable and wearable devices suitable for field-based measurements have revolutionized the study of exercise physiology and the determinants of exercise performance by providing real-time,non-invasive,and spatially localized measurements of tissue oxygenation dynamics.

关键词： cerebral utilized exercise

Life cycle assessment as a prospective tool for sustainable agriculture and food planning at a local level

在线全文

学校读者我要写书评

暂无评论

Geography and Sustainability 2024年第2期5卷 251-264页

作者： Andrea Lulovicova stephane Bouissou UniversitéCôte d’Azur ESPACE Laboratory UMR730098bd Edouard Herriot06200 NiceFrance

Owing to the far-reaching environmental consequences of agriculture and food systems,such as their contribution to climate change,there is an urgent need to reduce their *** and national governments set sustainability targets and implement corresponding ***,critics of the globalized system claim that a territorial administrative scale is better suited to address sustainability ***,at the subnational level,local authorities rarely apply a systemic environmental assessment to enhance their action *** paper employs a territorial life cycle assessment methodology to improve local environmental agri-food *** objective is to identify significant direct and indirect environmental hotspots,their origins,and formulate effective mitigation *** methodology is applied to the administrative department of Finistere,a strategic agricultural region in North-Western *** environmental criteria including climate change,fossil resource scarcity,toxicity,and land use are *** findings reveal that the primary environmental hotspots of the studied local food system arise from indirect sources,such as livestock feed or diesel *** reduction and organic farming conversion emerge as the most environmentally efficient strategies,resulting in a 25%decrease in the climate change ***,the overall modeled impact reduction is insufficient following national objectives and remains limited for the land use *** results highlight the innovative application of life cycle assessment led at a local level,offering insights for the further advancement of systematic and prospective local agri-food ***,they provide guidance for local authorities to enhance the sustainability of planning strategies.

关键词： Environmental analysis Territorial life cycle assessment Prospective scenario Agri-food planning Local food system

Pacemaker post transcatheter aortic valve replacement:A multifactorial risk?

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

World Journal of Cardiology 2024年第4期16卷 168-172页

作者： stephane Noble Karim Bendjelid Department of Medicine Structural Heart UnitUniversity Hospital of GenevaGeneva 1211Switzerland Department of Acute Medicine Geneva University HospitalsGeneva 1211Switzerland

Pacemaker post-transcatheter aortic valve replacement is related to multifactorial *** et al brought to the body of evidence electrocardiogram and clinical ***,procedural characteristics have at least as much impact on the final need for a permanent pacemaker and potentially on the pacing *** this regard,long-term follow-up and understanding of the impact of long-term stimulation is of utmost importance.

关键词： Transcatheter aortic valve replacement Permanent pacemaker implantation Conduction abnormalities Right bundle branch block Left bundle branch block

Translational machinery and translation regulation in axon regeneration

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Neural Regeneration Research 2025年第5期20卷 1392-1394页

作者： Homaira Nawabi stephane Belin Univ.Grenoble Alpes InsermU1216Grenoble Institut NeurosciencesGrenobleFrance

Over the centuries,the regeneration field has been puzzled by the dual response of the central nervous system(CNS-brain,spinal cord,cranial nervesⅠandⅡ)and the peripheral nervous system(PNS that refers to all the nerves that innervate muscles,skin,organs,bones among others).Even Ramon y Cajal had noticed that an injury to the PNS often leads to axon regrowth,in contrast to the CNS.

关键词： nerves organs muscles

Low-temperature catalytic methane deep oxidation over sol-gel derived mesoporous hausmannite (Mn_(3)O_(4)) spherical particles

在线全文

学校读者我要写书评

暂无评论

ChemPhysMater

ChemPhysMater 2024年第3期3卷 329-340页

作者： Patrick Ndouka Ndouka stephane Kenmoe Jacques Richard Mache Elie Acayanka dick Hartmann Douma Ralph Gebauer Patrick Mountapmbeme Kouotou Department of Chemistry Faculty of SciencesUniversity of MarouaP.O.Box 814 MarouaCameroon Department of Theoretical Chemistry University of Duisburg-EssenD-45141 EssenGermany Department of Mining Engineering School of Geology and Mining EngineeringUniversity of NgaoundéréP.O.Box 115 MeigangaCameroon Department of Inorganic Chemistry Faculty of ScienceUniversity of YaoundéIP.O.Box 812 YaoundéCameroon Groupe de Simulations Numériques en Magnétisme et Catalyse Facultédes Sciences et TechniquesUniversitéMarien NgouabiB.P.69 BrazzavilleCongo The Abdus Salam International Centre for Theoretical Physics(ICTP) 34151 TriesteItaly National Advanced School of Engineering of Maroua University of MarouaP.O.Box 46 MarouaCameroon Higher Institute of Agriculture WoodWater and EnvironmentUniversity of EbolowaP.O.Box 118 EbolowaCameroon

In this study,Mn_(3)O_(4) spherical particles(SPs)were synthesized by the sol-gel process,after which they were thermally annealed at 400℃,and comprehensively characterized.X-ray diffraction(XRD)revealed that Mn_(3)O_(4) exhibited a tetragonal spinel structure,and Fourier transformed infrared(FTIR)spectroscopy identified surfaceadsorbed functional *** electron microscopy(SEM)and the specific surface area analyses by Brunauer−Emmett−Teller(BET)revealed a porous,homogeneous surface composed of strongly agglomerated spherical grains with an estimated average particle size of∼35 nm,which corresponded to a large specific surface area of∼81.5 m^(2)/g.X-ray photoelectron spectroscopy(XPS)analysis indicated that Mn_(3)O_(4) was composed of metallic cations(Mn^(4+),Mn_(3)+,and Mn^(2+))and oxygen species(O_(2)−,OH−and CO_(3)2−).The optical bandgap energy is∼2.55 *** of the catalytic performance of the Mn_(3)O_(4) SPs indicated T90 conversion of CH4 to CO_(2) and H2O at 398℃ for gas hourly space velocity(GHSV)of 72000 mL^(3) g^(−1) h^(−1).This observed performance can be attributed to the cooperative effects of the smallest spherical grain size with a mesoporous structure,which is responsible for the larger specific surface area and available surface-active oxygenated *** cooperative effect of the good reducibility,higher ratio of active species(OLat/OAds),and results of density functional theory(DFT)calculations suggested that the total oxidation of CH4 over the mesoporous Mn_(3)O_(4) SPs might take place via a two-term process in which both the Langmuir−Hinshelwood and Mars−van Krevelen mechanisms are cooperatively involved.

关键词： Sol-gel Manganese oxide Catalytic oxidation Methane Langmuir−Hinshelwood mechanism Mars−van Krevelen route Two−term process

Matrix-assisted laser desorption/ionization time-of-flight mass spectrometry traces the geographical source of Biomphalaria pfeifferi and Bulinus forskali,involved in schistosomiasis transmission

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Infectious diseases of Poverty 2024年第1期13卷 98-99页

作者： Papa Mouhamadou Gaye EI Hadj Ibrahima Ndiaye Souleymane Doucoure Doudou Sow Mapenda Gaye Ndiaw Goumballa Carole Cassagne Coralie L'Ollivier Oleg Medianikov Cheikh Sokhna stephane Ranque Aix-Marseille University IRD AP-HM SSA VITROME Marseille France VITROME International IRD-UCAD Campus Dakar Senegal Hospital-University Institut (IHU) Mediterranée Infection Marseille France Departement of Animal Biology Faculty of Sciences and Techniques UCAD Dakar Senegal Department of Parasitology-Mycology UFR Sciences de la Santé Université Gaston Berger Saint-Louis Senegal

Background Freshwater snails of the genera Bulinus spp.,Biomphalaria spp.,and Oncomelania *** the main intermediate hosts of human and animal *** of these snails has long been based on mor-phological and/or genomic criteria,which have their *** limitations include a lack of precision for the morphological tool and cost and time for the DNA-based ***,Matrix-Assisted Laser Desorp-tion/lonization Time-Of-Flight(MALdi-TOF)mass spectrometry,a new tool used which is routinely in clinical microbi-ology,has emerged in the field of malacology for the identification of freshwater *** study aimed to evaluate the ability of MALdi-TOF MS to identify Biomphalaria pfeifferi and Bulinus forskali snail populations according to their *** This study was conducted on 101 *** and 81 *** snails collected in three distinct geo-graphical areas of Senegal(the North-East,South-East and central part of the country),and supplemented with wild and laboratory *** which had previously been morphologically described were identified by MALDl-TOF MS[identification log score values(LSV)≥1.7],after an initial blind test using the pre-existing *** DNA-based identification,new reference spectra of ***(n=10)and ***(n=5)from the geographical areas were added to the MALdi-TOF spectral *** final blind test against this updated database was per-formed to assess identification at the geographic source *** MALdi-TOF MS correctly identified 92.1%of 101 *** snails and 98.8%of 81 *** *** the final blind test,88%of 166 specimens were correctly identified according to both their species and sampling site,with LSVs ranging from 1.74 to *** geographical source was adequately identified in 90.1%of 91 *** and 85.3%of 75 *** *** Our findings demonstrate that MALdi-TOF MS can identify and differe

关键词： Matrix-assisted laser desorption/ionization time-of-flight mass spectrometry Snail Intermediate host Biomphalaria pfeifferi Bulinus forskali Schistosomiasis Senegal

Comparative Study of the Types of Photovoltaic Panels Used in Solar Pumping Systems in Dry Tropical Zones: Case of Adamawa Region in Cameroon

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Open Journal of Energy Efficiency 2024年第3期13卷 79-87页

作者： Boussaibo Andre Waoudowa Kande Veronique Ndjiya Ngasop stephane Gautier Kitmo Department of Electrical Engineering University Institute of Ngaoundr Ngaoundr Cameroon Department of Electrical Energy and Automation National School of Agro-Industrial Sciences Ngaoundr Cameroon Department of Physics University of Ngaoundr Ngaoundr Cameroon

In the dry tropical zone where access to water is increasingly difficult for populations, solar pumping units are increasingly installed to provide water to population. In the local market, there are essentially two types of solar panels, namely monocrystalline and polycrystalline. However, the part of the local market is more dominated by the polycrystalline panel. In this work, comparative studies are carried out in order to characterize the two types of solar panels with regard to local constraints. Tests were carried out over the course of the sun to establish the performance of each type. The panels used have the same electrical characteristics and are connected to loads with same characteristics. Under the set operating conditions, the monocrystalline panel presents more performance than the polycrystalline panel. Although the local market is dominated by the polycrystalline panel, dust deposition tests on the surface of the panels show that the performance of the polycrystalline panel is more affected compared to the performance of the monocrystalline panel.

关键词： Solar Pumping Monocrystalline Cell Polycrystalline Cell Dry tropical Zone Dustdeposit

Nutritional and Antioxidant Evaluation and Effect of Eggplant Consumption on Anthropometric and Hematologic Parameters in Wistar Rats

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Food and Nutrition Sciences 2024年第4期15卷 245-262页

作者： Elenga Michel Nkouka Rhode Gouollaly Tsiba Wossolo stephane Itoua Okouango Yvon Simplice Mananga Vital Multi-field Team of Research in Feeding and Nutrition (Eprancongo) Faculty of Sciences and Technology Marien Ngouabi University Brazzaville Republic of the Congo Laboratory of Human Nutrition and Feeding (LaNAH) Faculty of Sciences and Technology Marien Ngouabi University Brazzaville Republic of the Congo Department of Pharmacopeia and Traditional Medicine National Institute of Health Science & Research (IRSSA) Scientific City of Brazzaville Brazzaville Republic of the Congo Laboratory of Pharmacodynamics and Experimental Pathophysiology (L2PE) Faculty of Sciences and Technology Marien Ngouabi University Brazzaville Republic of the Congo

The aim of the present study was to evaluate the nutritional quality of green and purple eggplant, their antioxidant activity and their nutritional efficacy on Wistar rats. For nutritional quality, the parameters measured are dry matter, protein, lipid, ash, carbohydrate, iron, phosphorus, calcium, magnesium and energy content. For antioxidant activity, the parameters measured are 50% DDPH free radical inhibition concentration and total polyphenol content. Nutritional efficacy was evaluated in rats fed the control diet and in rats fed the three treated diets containing eggplant meal obtained by replacing 5%, 10%, and 15% of the control diet. The parameters measured are the amount consumed, the weight of the animal and target organs, and hematologic parameters. The results of the nutritional analysis show the following values: 13.31% protein, 2.66% lipids, 0.84% calcium, 0.12% magnesium, 0.43% phosphorus for the Solanum aethiopicum L. species and 13.47% protein, 3.66% lipids, 0.36% calcium, 0.22% magnesium, 0.35% phosphorus for the Solanum melongena L. species. In terms of antioxidant activity, we obtained DDPH inhibition percentages of 40.28 mg/ml for Solanum aethiopicum L. and 12.42 mg/ml for Solanum melongena L., respectively. Finally, hematologic and anthropometric tests showed that for the different diets used, weight loss and an increase in hematologic parameters were observed in the rats tested. This study showed that eggplant has interesting nutritional characteristics and antioxidant activity, contributing to an increase in weight and anthropometric parameters.

关键词： Fruit Vegetables Eggplant Solanum aethiopicum L. Solanum melongena L. Antioxidants Polyphenols