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Gamma induced changes in Makrofol/CdSe nanocomposite films

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Chinese Physics B 2022年第9期31卷 547-553页

作者： Ali A.Alhazime M.me.Barakat Radiyah A.Bahareth E.M.Mahrous Saad Aldawood S.Abd El Aal S.A.Nouh Physics Department Faculty of ScienceTaibah UniversityMedinaSaudi Arabia Department of Physics Faculty of ScienceTaibah UniversityYanbuSaudi Arabia Department of Physics Faculty of ScienceAlexandria UniversityAlexandriaEgypt Physics Department College of ScienceJeddah UniversityJeddahSaudi Arabia Department of Physics and Astronomy College of ScienceP.O.BOX 2455King Saud UniversitySaudi Arabia Center of Radiation Research and Technology Egyptian Atomic AuthorityNasr CityCairoEgypt Qassim University P.B.6644Buraidah 51452QassimSaudi Arabia Physics Department Faculty of ScienceAin Shams UniversityCairoEgypt

We applied an ex-situ casting procedure to prepare a nanocomposite(NCP)from Makrofol polycarbonate(PC)and CdSe *** CdSe nanoparticles were prepared by a thermolysis procedure in the presence of N_(2) gas *** refinement of x-ray data illustrated that the CdSe adopts a cubic zinc blend structure of 6.057 A lattice parameter and 2 nm typical grain *** from the prepared NCP were exposed to γ dosages(20 kGy-250 kGy).The modifications induced in the NCP films owing to γ dosages have been ***γirradiation(50 kGy-250 kGy)causes crosslinks that reduce the optical bandgap from 4.15 eV to 3.81 eV,associated with an increase in dielectric parameters and refractive *** is attributed to an increase in the mass fraction of the disordered regions as specified by x-ray *** PC-CdSe NCP was found to have a reaction to color modification which makes it suitable for saleable reproduction on a printing press.

关键词： gamma nanocomposite x-ray dfraction UV spectra color changes

Zinc oxide nano-enabled microfluidic reactor for water purification and its applicability to volatile organic compounds

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Microsystems & Nanoengineering 2018年第1期4卷 450-456页

作者： Imadeddine Azzouz Yamina Ghozlane Habba Martine Capochichi-Gnambodoe Frédéric Marty Jérôme Vial Yamin Leprince-Wang Tarik Bourouina UniversitéParis-est ESIEE-ParisESYCOM EA 25522 Boulevard Blaise Pascal93162 Noisy-le-GrandFrance UniversitéParis-est UPEMESYCOM EA 25525 Boulevard Descartes77420 Champs sur MarneFrance LSABM CNRS UMR 8231ESPCI ParisTech-PSL Research University10 Rue Vauquelin75005 ParisFrance

This paper reports fast and efficient chemical decontamination of water within a tree-branched centimeter-scale microfluidic *** microreactor integrates Zinc oxide nanowires(ZnO NWs)in situ grown acting as an efficient photocatalytic nanomaterial *** growth of ZnO NWs within the microfluidic chamber brings this photocatalytic medium at the very close vicinity of the water flow path,hence minimizing the required interaction time to produce efficient purification *** demonstrate a degradation efficiency of 95%in o5 s of residence time in one-pass *** to our estimates,it becomes attainable using microfluidic reactors to produce decontamination of merely 1 l of water per day,typical of the human daily drinking water *** conduct our experiments,we have chosen a laboratory-scale case study as a seed for addressing the health concern of water contamination by volatile organic compounds(VOCs),which remain difficult to remove using alternative decontamination techniques,especially those involving water *** contaminated water sample contains mixture of five pollutants:Benzene;Toluene;Ethylbenzene;m–p Xylenes;and o-Xylene(BTEX)diluted in water at 10 *** of *** was analytically monitored in a selective manner until it falls below 1 *** each of the five pollutants,corresponding to the maximum contaminant level(MCL)established by the US Environmental Protection Agency(EPA).We also report on a preliminary study,investigating the nature of the chemical by-products after the photocatalytic VOCs degradation process.

关键词： microfluidic reactor water purification zinc oxide nanowires volatile organic compounds(VOCs) Benzene,Toluene,Ethylbenzene,m-p Xylenes,o-Xylene(BTEX)

How to properly evaluate cardiac vagal tone in oncology studies:a state-of-the-art review

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Journal of the National Cancer Center 2024年第1期4卷 36-46页

作者： Pierrick Martinez Marilyne Grinand Saïda Cheggour Jérôme Taieb Géraud Gourjon Scientific and Osteopathic Research Department Institut de Formation en Ostéopathie du Grand Avignon403 Rue Marcel DemonqueAvignonFrance Département de recherche clinique Centre hospitalier d’Avignon305A Rue Raoul FollereauAvignonFrance Service de cardiologie Centre hospitalier d’Avignon305A Rue Raoul FollereauAvignonFrance Service de cardiologie Centre Hospitalier du pays d’Aix-PertuisAvenue des Tamaris Aix-en-ProvenceFrance

Heart rate variability(HRV)analysis provides an assessment of cardiac vagal tone and consequently global cardiac health as well as systemic *** systemic diseases such as cancer and during treatments that affect the whole body,like chemotherapy,the vagus nerve activity is low and *** studies focus on using HRV to predict mortality in ***,in cancer patients,systemic alterations substantially increase artifacts during HRV measurement,especially atrial ectopic ***,HRV may be altered by various factors(duration and time of measurement,breathing,drugs,and other confounding factors)that alter each metric in different *** Standard Deviation of all Normal to Normal intervals(SDNN)is the most commonly used metric to evaluate HRV in oncology,but it does not appear to be specific to the cardiac vagal ***,cardiac vagal activity diagnosis and vital prognosis of cancer patients can be *** review presents the main HRV metrics that can be currently used in oncology studies and their links with vagus nerve and *** present the influence of external factors and the required duration and time of *** all these parameters,this review proposes seven key points for an assessment of HRV and cardiac vagal tone in patients with cancer.

关键词： Clinical oncology Heart rate control Vagal nerve stimulation Autonomic nervous system Evaluation methodology

Hospital management priorities and key factors affecting overall perception of patient safety: a cross-sectional study

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Frontiers of Nursing 2022年第2期9卷 209-214页

作者： Na-me De Ji Xin Luo Xiao-Yu Luo Xiao-Li Li Gui-Ru Chen ICU People’s Hospital of Aba Tibetan and Qiang Autonomous PrefectureMaerkangTibetan Qiang Autonomous Prefecture of NgawaSichuan 624000China Operating Room People’s Hospital of Aba Tibetan and Qiang Autonomous PrefectureMaerkangTibetan Qiang Autonomous Prefecture of NgawaSichuan 624000China Department of Respiratory and Endocrinology People’s Hospital of Aba Tibetan and Qiang Autonomous PrefectureMaerkangTibetan Qiang Autonomous Prefecture of NgawaSichuan 624000China

Objective:Evaluating a staff’s perception of safety culture is a critical factor in hospital management,and the knowledge of value and efficiency in hospitals is still *** study aimed to investigate the perceptions of safety culture among medical staffs and determine priorities for clear and better ***:A cross-sectional survey of 595 medical staff members was conducted at 2 ter tiary hospitals in Western China using a hospital survey on patient safety culture(HSOPSC)and its value and efficiency in the ***:The dimensions with a disadvantaged positive response were nonpunitive response to error(44.6%)and staffing(42.0%).Five dimensions can explain 37.7%of the variation in the overall perception of patient safety,and handoffs and transitions are the most important dimensions(standardized coefficients 0.295).Conclusions:Hospital managers should pay more attention to nonpunitive management and *** and transitions are the most important areas of potential improvement in patient safety in hospitals.

关键词： efficiency human resource management patient handoff patient safety culture.value

Near-infrared reflectance spectroscopy reveals wide variation in major components of sesame seeds from Africa and Asia

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The Crop Journal 2018年第2期6卷 202-206页

作者： Komivi Dossa Xin Wei Marème Niang Pan Liu Yanxin Zhang Linhai Wang Boshou Liao Ndiaga Cissé Xiurong Zhang Diaga Diouf Oil Crops Research Institute of the Chinese Academy of Agricultural Sciences Key Laboratory of Biology and Genetic Improvement of Oil CropsMinistry of AgricultureWuhan 430062HubeiChina Centre d'Etudes Régional pour l'Amélioration de l'Adaptationàla Sécheresse(CERAAS) BP 3320 Route de KhomboleThièsSénégal Laboratoire Campus de Biotechnologies Végétales Département de Biologie VégétaleFacultédes Sciences et TechniquesUniversité Cheikh Anta DiopBP 5005 Dakar-FannDakar 107000Sénégal

Sesame is an important oilseed crop in Africa and Asia, owing to its high nutritional quality seed and market value. Variation in sesame seed components including oil, oleic acid,linoleic acid, and protein was investigated by near-infrared reflectance spectrometry in 139 samples collected from different countries. Oil and protein contents were between 40.8%and 60.3%(mean 53.0%) and 15.5% to 25.5%(mean 20.4%), respectively. Linoleic acid,ranging from 31.8% to 52.4%(mean 46%) was more abundant than oleic acid(31.8%–50.6%,mean 38.1%). Light-seeded samples displayed higher nutritional quality, as they were richer in oil, protein, and linoleic acid than dark seeds. Samples from Africa had higher oil and linoleic acid contents, while Asian samples had higher oleic content. The analysis revealed West African sesame cultivars containing especially high levels of seed components, which may command high market values. Two clusters of sesame samples grouped by seed composition were obtained, including one cluster with high oil and oleic acid content and the other with high protein and linoleic acid content. This study revealed that sesame samples from Africa and Asia harbor high variation for major seed components and also provided background information for breeding high-nutrition varieties according to the demands of sesame seed markets.

关键词： Sesamum indicum Major seed components Variation Asia Africa NIRS

Optical Nanoimpacts of Dielectric and metallic Nanoparticles on Gold Surface by Reflectance Microscopy: Adsorption or Bouncing?

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Journal of Analysis and Testing 2019年第2期3卷 175-188页

作者： Jean-François Lemineur Talia Jane Stockmann Jérôme Médard Claire Smadja Catherine Combellas Frédéric Kanoufi UniversitéSorbonne Paris Cité UniversitéParis DiderotITODYSCNRS UMR 708615 rue J.A.de Baïf75013 ParisFrance Present Address:memorial University of Newfoundland Chemistry Department283 Prince Philip Dr.St.John’sNL A1B 3X7Canada Faculty of Pharmacy University Paris-SudCNRS UMR 86125 rue J.B.Clément92296 Châtenay-MalabryFrance

Optical modeling coupled to experiments show that a microscope operating in reflection mode allows imaging,through solutions or even a microfluidic cover,various kinds of nanoparticles,NPs,over a(reflecting)sensing surface,here a gold(Au)*** modeling suggests that this configuration enables the interferometric imaging of single NPs which can be characterized individually from local change in the surface *** interferometric detection improves the optical limit of detection compared to classical configurations exploiting only the light scattered by the *** method is then tested experimentally,to monitor in situ and in real time,the collision of single Brownian NPs,or optical nanoimpacts,with an Au-sensing ***,mimicking a microfluidic biosensor platform,the capture of 300 nm FeOx maghemite NPs from a convective flow by a surface-functionalized Au surface is dynamically ***,the adsorption or bouncing of individual dielectric(100 nm polystyrene)or metallic(40 and 60 nm silver)NPs is observed directly through the *** influence of the electrolyte on the ability of NPs to repetitively bounce or irreversibly adsorb onto the Au surface is *** such visualization mode of single-NP optical nanoimpacts is insightful for comprehending single-NP electrochemical studies relying on NP collision on an electrode(electrochemical nanoimpacts).

关键词： Reflection microscopy Single nanoparticle Sensor Adsorption Silver Polystyrene

Osteocyte pericellular and perilacunar matrices as markers of bone-implant mechanical integrity

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BIOCELL 2022年第10期46卷 2209-2216页

作者： ReMY GAUTHIER HeLÈNE FOLLET ANA-MARIA TRUNFIO-SFARGHIU DELPHINE FARLAY NINA ATTIK SYLVAIN meILLE JeRÔme CHEVALIER DAVID MITTON Universite de Lyon CNRSINSA de LyonUniversite Claude Bernard Lyon 1MATEISUMR5510VilleurbanneF-69621France Universite de Lyon Universite Claude Bernard Lyon 1INSERMLYOS UMR 1033LyonF-69008France Universite de Lyon INSA-LyonCNRS UMR5259LaMCoSVilleurbanneF-69621France Universite de Lyon Universite Claude Bernard Lyon 1UMR CNRS 5615Laboratoire des Multimateriaux et InterfacesVilleurbanneF-69622France Universite de Lyon Universite Claude Bernard Lyon 1Faculte d’OdontologieLyonF-69008France Universite de Lyon Universite Gustave EiffelUniv Claude Bernard Lyon 1LBMC UMR_T 9406LyonF-69622France

To develop durable bone healing strategies through improved control of bone repair,it is of critical importance to understand the mechanisms of bone mechanical integrity when in contact with biomaterials and *** mechanical integrity is defined here as the adaptation of structural properties of remodeled bone in regard to an applied mechanical ***,the authors present why future investigations in bone repair and regeneration should emphasize on the matrix surrounding the *** are mechanosensitive cells considered as the orchestrators of bone remodeling,which is the biological process involved in bone *** bone cells are trapped in an interconnected porous network,the lacunocanalicular network,which is embedded in a bone mineralized extracellular *** a consequence of an applied mechanical loading,the bone deformation results in the deformation of this lacunocanalicular network inducing a shift in interstitial fluid pressure and velocity,thus resulting in osteocyte *** material environment surrounding each osteocyte,the so called perilacunar and pericellular matrices properties,define its *** this mechanical stimulation pathway is well known,the laws used to predict bone remodeling are based on strains developing at a tissue scale,suggesting that these strains are related to the shift in fluid pressure and velocity at the lacunocanalicular *** this relationship has been validated through observation in healthy bone,the fluid behavior at the bone-implant interface is more *** presence of the implant modifies fluid behavior,so that for the same strain at a tissue scale,the shift in fluid pressure and velocity will be different than in a healthy bone *** that context,new markers for bone mechanical integrity,considering fluid behavior,have to be *** viewpoint exposed by the authors indicates that the properties of the pericellular and the perilacunar

关键词： Bone mechanical integrity Osteocytes Pericellular Perilacunar mechanosensitivity

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一衣多穿百变宝典 1版

2008年

作者： me爱美丽编

181913

ISBN: (数字)9787501964987

ISBN: (纸本)9787501964987

181913

关键词：服饰美学

来源：汇雅图书（南通市图书馆... 评论

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缅甸抹谷变质带新生代超高温变质作用

中国科学：地球科学 2021年第11期51卷 1872-1893页

作者：陈思陈意李仪兵苏斌张庆华 me me AUNG Kyaing SEIN 中国科学院地质与地球物理研究所岩石圈演化国家重点实验室北京100029 中国科学院青藏高原地球科学卓越创新中心北京100101 中国科学院大学北京100049 Geology Department Myitkyina UniversityKachin StateMyitkyina 01012Myanmar Myanmar Geosciences Society Hlaing University CampusYangon 11062Myanmar

超高温变质作用是探知大陆地壳极端热演化的重要窗口,广泛分布于前寒武纪,在新生代极少出现.文章通过详细的岩石学和年代学研究,在缅甸抹谷变质带中发现了~25Ma的超高温泥质麻粒岩,峰期矿物组合为石榴子石+夕线石+斜长石(反条纹长石)+... 详细信息

超高温变质作用是探知大陆地壳极端热演化的重要窗口,广泛分布于前寒武纪,在新生代极少出现.文章通过详细的岩石学和年代学研究,在缅甸抹谷变质带中发现了~25Ma的超高温泥质麻粒岩,峰期矿物组合为石榴子石+夕线石+斜长石(反条纹长石)+钾长石+石英+富Ti黑云母+金红石+钛铁矿.尽管传统矿物温压计和压力(P)-温度(T)视剖面图限定其峰期变质压力900°C和~12kbar.锆石SIMS和LA-ICP-MS U-Pb定年及微量元素分析显示,变质锆石都具有重稀土(HREE)平坦的配分模式和Eu的负异常特征.两个麻粒岩样品中HREE含量最低的变质锆石分别给出了(24.9±0.5)和(25.4±0.6)Ma的206Pb/238U年龄,代表了超高温变质时代.研究结果表明,抹谷地区在~25Ma经历了超高温变质作用,这可能是板块汇聚边缘的大陆张裂引发岩石圈伸展导致的,进一步论证了在现代板块构造体制下岩石圈伸展是诱发超高温变质作用的关键机制.

关键词：抹谷变质带超高温变质作用泥质麻粒岩金红石Zr温度计锆石年代学