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Adding memory to pressure-sensitive phosphors

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Light(Science & Applications) 2019年第1期8卷 1-10页

作者： Robin R.Petit Simon e.Michels Ang Feng philippe F.Smet LumiLab Department of Solid State SciencesGhent UniversityKrijgslaan 281-S19000 GentBelgium

Mechanoluminescence(ML)is the phenomenon describing the emission of light during mechanical action on a solid,leading to applications such as pressure sensing,damage detection and visualization of stress *** most cases,this mechanical action releases energy that was previously stored in the crystal lattice of the phosphor by means of trapped charge carriers.A drawback is the need to record the ML emission during a pressure *** this work,we provide a method for adding a memory function to these pressure-sensitive phosphors,allowing an optical readout of the location and intensity of a pressure event in excess of 72 h after the *** is achieved in the BaSi_(2)O_(2)N_(2):eu^(2+) phosphor,where a broad trap depth distribution essential for the process is *** merging optically stimulated luminescence(OSL),thermoluminescence(TL)and ML measurements,the influence of light,heat and pressure on the trap depth distribution is carefully *** analysis demonstrates that mechanical action can not only lead to direct light emission but also to a reshuffling of trap *** memory effect not only is expected to lead to new pressure sensing applications but also offers an approach to study charge carrier transitions in energy storage phosphors.

关键词： luminescence occupation adding

Chemo-type of essential oil of Ocimum basilicum *** DR Congo and relative in vitro antioxidant potential to the polarity of crude extracts

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Asian Pacific Journal of Tropical Biomedicine 2016年第12期6卷 1022-1028页

作者： Dorothee Dinangayi Tshilanda philippe Bila Babady Damase Nguwo Vele Onyamboko Christian Muamba Tshilolo Tshiongo Damien Sha-Tshibey Tshibangu Koto-te-Nyiwa Ngbolua philippe Vuka Tsalu Pius Tshimankinda Mpiana Department of Chemistry Faculty of ScienceUniversity of Kinshasa Bila Nutraceuticals Company Department of Biology Faculty of ScienceUniversity of Kinshasa

Objective:To carry out a phyto-chemical characterization of essential oil from Ocimum basilicum L.(***) harvested in DR Congo and to assess the antioxidant potential of crude extracts with respect to the polarity for comparison ***:The phyto-chemical characterization of essential oil produced by hydrodistillation was performed by coupled gas chromatography-mass spectrometer analysis and the antioxidant potential evaluation by in vitro 2,2-diphenyl-1-picrylhydrazyl free radical scavenging activity ***:A previously weighed amount of fresh leaves of *** produced 0.65%of essential oil that led to the identification of a set of 84.44%out of 99.98%as major compounds(> 1.5%).The chemo-type of this essential oil was linalool-methyl *** components of oil were characterized by oxygenated aromatic hydrocarbons(46.00%) and oxygenated monoterpenes(26.75%).With respect to the amount of components,methyl chavicol also known as estragole(35.72%) constituted the very large quantity afterward linalool(21.25%) and then epi-α-cadinol(8.02%),α-bergamotene(6.56%),eugenol(4.60%),1,8-cineole(4.04%),germacrene D(2.06%),thymol(1.64%),and(e)-citral(1.55%),*** oil exhibited antioxidant potential and IC_(50) =(1.180 ± 0.015) mg/***-polar crude extracts yields were low compared to the one of polar *** methanol and ethyl acetate had considerably manifested antioxidant potential with IC_(50) values equal to(0.025 ± 0.013) mg/mL and(0.085 ± 0.012) mg/mL,*** concerns to IC50 values,essential oil was less active than methanol and ethyl acetate *** methanol crude extract exhibited the highest ***-polar extracts showed insignificant radical scavenging ability that did not allow assessing IC50 *** results highlighted the occurrence of antioxidant potential compounds in polar ***:essential oil and crude extracts of *** growing in DR Congo can be advocated as nat

关键词： Ocimum basilicum L. essential oil Polar and non-polar crude extracts In vitro antioxidant potential GC-MS analysis

Direct ammonium oxidation to nitrogen gas (Dirammox) in Alcaligenes strain HO-1: The electrode role

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environmental Science and ecotechnology 2023年第3期15卷 121-127页

作者： Narcís Pous Lluis Baneras philippe F-XCorvini Shuang-Jiang Liu Sebastia Puig Laboratory of Chemical and environmental engineering(LeQUiA) Institute of the EnvironmentUniversity of GironaCarrer Maria Aurelia Capmany69E-17003GironaSpain Group of environmental Microbial ecology Institute of Aquatic EcologyUniversity of GironaC/Maria Aurelia Capmany40E-17003GironaSpain School of Life Sciences University of Applied Sciences and Arts Northwestern SwitzerlandMuttenz4132Switzerland State Key Laboratory of Microbial Resource at Institute of Microbiology Chinese Academy of SciencesBeijing100101China

It has been recently suggested that Alcaligenes use a previously unknown pathway to convert ammonium into dinitrogen gas(Dirammox)via hydroxylamine(NH2OH).This fact alone already implies a significant decrease in the aeration requirements for the process,but the process would still be dependent on external *** work studied the potential use of a polarised electrode as an electron acceptor for ammonium oxidation using the recently described Alcaligenes strain HO-1 as a model heterotrophic *** indicated that Alcaligenes strain HO-1 requires aeration for metabolism,a requirement that cannot be replaced for a polarised electrode ***,concomitant elimination of succinate and ammonium was observed when operating a previously grown Alcaligenes strain HO-1 culture in the presence of a polarised electrode and without *** usage of a polarised electrode together with aeration did not increase the succinate nor the nitrogen removal rates observed with aeration ***,current density generation was observed along a feeding batch test representing an electron share of 3%of the ammonium removed in the presence of aeration and 16%without *** tests suggested that hydroxylamine oxidation to dinitrogen gas could have a relevant role in the electron discharge onto the ***,the presence of a polarised electrode supported the metabolic functions of Alcaligenes strain HO-1 on the simultaneous oxidation of succinate and ammonium.

关键词： Bioelectrochemical systems electroactive bacteria Microbial electrochemical technologies Nitrification Nitrogen removal

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

Multiparametric characterization of red blood cell physiology after hypotonic dialysis based drug encapsulation process

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Acta Pharmaceutica Sinica B 2022年第4期12卷 2089-2102页

作者： Mélanie Robert Bastien Laperrousaz Diana Piedrahita emilie-Fleur Gautier Travis Nemkov Florian Dupuy elie Nader Virginie Salnot Patrick Mayeux Angelo D’Alessandro Catherine Lavazec philippe Joly Alexander Scheer philippe Connes Agnès Cibiel erytech Pharma Lyon 69008France Laboratoire interuniversitaire de Biologie de la Motricité(LIBM)eA7424 Team«Vascular Biology and Red Blood Cell»Universite´Claude Bernard Lyon 1Universite´de LyonLyon 69008France Labex GR-ex Paris 75015France 3P5 proteom’IC facility Universitéde ParisInstitut CochinINSERMCNRSParis 75014France University of Colorado Anschutz Medical CampusAuroraCO 80045USA Omix Technologies Inc.AuroraCO 80045USA Inserm U1016 CNRS 8104Universitéde ParisInstitut CochinParis 75014France Laboratoire de Biochimie et de Biologie Moléculaire UF de biochimie des pathologies e´rythrocytairesCentre de Biologie et de Pathologie EstHospices Civils de LyonBron 69500France

Red blood cells(RBCs)can act as carriers for therapeutic agents and can substantially improve the safety,pharmacokinetics,and pharmacodynamics of many *** RBCs integrity and lifespan is important for the efficacy of RBCs as drug *** investigated the impact of drug encapsulation by hypotonic dialysis on RBCs physiology and *** parameters were compared between processed RBCs loaded with l-asparaginase(“eryaspase”),processed RBCs without drug and non-processed *** RBCs were less hydrated and displayed a reduction of intracellular *** observed a change in the metabolomic but not in the proteomic profile of processed *** process caused moderate morphological changes and was accompanied by an increase of RBCs-derived extracellular Vesicles *** a decrease in deformability,processed RBCs were not mechanically retained in a spleen-mimicking device and had increased surface-to-volume ratio and osmotic *** RBCs half-life was not significantly affected in a mouse model and our previous phase 1 clinical study showed that encapsulation of asparaginase in RBCs prolonged its in vivo half-life compared to free *** study demonstrated that encapsulation by hypotonic dialysis may affect certain characteristics of RBCs but does not significantly affect the in vivo longevity of RBCs or their drug carrier function.

关键词： Red blood cells Drug carrier Hypotonic dialysis L-Asparaginase Omics Rheology Morphology Senescence markers

氮掺杂碳纳米管负载的Ru和Pd催化剂上异丙醇的转化(英文)

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催化学报 2014年第6期35卷 970-978页

作者： Anas Benyounes Mohamed Kacimi Mahfoud Ziyad philippe Serp Laboratory of Coordination Chemistry UPR CNRS 8241 ENSIACET Group Toulouse University 4 allée Emile Monso - CS 44362 Toulouse Cedex 4 France Laboratory of Physical Chemistry of Materials Catalysis and Environment (URAC26) Department of Chemistry Faculty of Science University of Mohammed V-Agdal BP1014 Rabat Morocco Hassan II Academy of Science and Technology Rabat Morocco

Ru and Pd (2 wt%) loaded on pure and on Ndoped carbon nanotubes (NCNTs) were prepared and tested using the isopropyl alcohol decomposition reaction as probe reaction. The presence of nitrogen functionalities (pyridinic, pyrrolic, and quaternary nitrogen) on the nitrogen doped support induced a higher metal dispersion: Pd/NCNT (1.8 nm) e catalytic activity of the supports was determined first. Isopropyl alcohol conversion produces acetone on CNTs while on NCNTs it led to both dehydration and dehydrogenation products. At 210 °C and in the presence of air, the isopropyl alcohol conversion was higher on the NCNTs (25%) than on the CNTs (11%). The Pd loaded catalysts were more active and more selective than the Ru ones. At 115 °C, the Pd catalysts were 100% selective towards acetone for a conversion of 100%, whereas the Ru catalysts led to dehydration and dehydrogenation products. The nitrogen doping induced the appearance of redox properties when oxygen is present in the reaction mixture.

关键词：碳纳米管氮掺杂异丙醇 Ru Pd 氧化还原性质钯催化剂加载

Anti-inflammatory effects of Lacto-Wolfberry in a mouse model of experimental colitis

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World Journal of Gastroenterology 2012年第38期18卷 5351-5359页

作者： David philippe Viral Brahmbhatt Francis Foata Yen Saudan Patrick Serrant Stephanie Blum Jalil Benyacoub Karine Vidal Department of Nutrition and Health Nestlé Research CenterCH-1000 Lausanne Switzerland

AIM: To investigate the anti-inflammatory properties of Lacto-Wolfberry (LWB), bothin vitro and using a mouse model of experimental colitis. MeTHODS: The effects of LWB on lipopolysaccharide (LPS)-induced reactive oxygen species (ROS) and interleukin (IL)-6 secretion were assessed in a murine macrophage cell line. in vitro assessment also included characterizing the effects of LWB on the activation of NF-e2 related 2 pathway and inhibition of tumor necrosis factor-α (TNF-α)-induced nuclear factor-κB (NFκB) activation, utilizing reporter cell lines. Following the in vitro assessment, the anti-inflammatory efficacy of an oral intervention with LWB was tested in vivo using a preclinical model of intestinal inflammation. Multiple outcomes including body weight, intestinal histology, colonic cytokine levels and anti-oxidative measures were ***: LWB reduced the LPS-mediated inductionof ROS production [+LPS vs 1% LWB + LPS, 1590 ± 188.5 relative luminescence units (RLU) vs 389 ± 5.9 RLU, P e effective than wolfberry alone in reducing LPS-induced IL-6 secretion in vitro (wolfberry vs 0.5% LWB, 15% ± 7.8% vs 64% ± 5%, P eased reporter gene expression via the anti-oxidant response element activation (wolfberry vs LWB, 73% ± 6.9% vs 148% ± 28.3%, P ed the TNF-α-induced activation of the NF-κB pathway (milk vs LWB, 10% ± 6.7% vs 35% ± 3.3%, P ermore, oral supplementation with LWB resulted in a reduction of macroscopic (-LWB vs +LWB, 5.39 ± 0.61 vs 3.66 ± 0.59, P = 0.0445) and histological scores (-LWB vs +LWB, 5.44 ± 0.32 vs 3.66 ± 0.59, P = 0.0087) in colitic mice. These effects were associated with a significant decrease in levels of inflammatory cytokines such as IL-1β (-LWB vs +LWB, 570 ± 245 μg/L vs 89 ± 38 μg/L, P = 0.0106), keratinocyte-derived chemokine/growth regulated protein-α (-LWB vs +LWB, 184 ± 49 μg/Lvs 75 ± 20 μg/L,P = 0.0244), IL-6 (-LWBvs +LWB, 318 ± 99 μg/L

关键词： Lacto-Wolfberry Colitis Nutrition Inflammation Wolfberry Inflammatory bowel disease Crohn's disease

Polymeric foams for flexible and highly sensitive low-pressure capacitive sensors

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npj Flexible electronics 2019年第1期3卷 72-77页

作者： Mickaël Pruvost Wilbert J.Smit Cécile Monteux philippe Poulin Annie Colin Chimie Biologie Innovation ESPCI ParisCNRSPSL University75005 ParisFrance Sciences et Ingénierie de la Matière Molle ESPCI ParisCNRSPSL University75005 ParisFrance Centre de Recherche Paul Pascal CNRSUniversitéde Bordeaux115 Avenue Schweitzer33600 PessacFrance

Flexible low-pressure sensors(<10 kPa)are required in areas as diverse as blood-pressure monitoring,human–computer interactions,robotics,and object *** applications,it is essential that these sensors combine flexibil... 详细信息

Flexible low-pressure sensors(e required in areas as diverse as blood-pressure monitoring,human–computer interactions,robotics,and object *** applications,it is essential that these sensors combine flexibility,high sensitivity,robustness,and low production *** works involve surface micro-patterning,electronic amplification(OFeT),and ***,these solutions are limited as they involve complex processes,large bias voltages,large energy consumption,or are sensitive to ***,we report a major advance to solve the challenge of scalable,efficient and robust *** present an unconventional capacitive sensor based on composite foam materials filled with conductive carbon black *** to the elastic buckling of the foam pores,the sensitivity exceeds 35 kPa^(−1) for pressureerformances are one order of magnitude higher than the ones previously *** materials are low-cost,easy to prepare,and display high capacitance values,which are easy to measure using low-cost *** materials pave the road for the implementation of e-skin in commercialized applications.

关键词： computer filled buckling

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基于知识的专题制图系统——另一种途径

黑龙江测绘 1994年第3期17卷 53-59页

作者： e.Hutzler e.spiess(Zurich cH) 童扬芬武汉测绘科技大学

随着各个领域的基于知识系统的发展,大量专题制图设计问题有希望得到解决。当数据输入和用户要求格式化时,系统可在没有任何干预的情况下通过规则库指导完成全部必要的步骤。这样的一种方法将完全同交互式设计方式形成对比,而后一种方... 详细信息

随着各个领域的基于知识系统的发展,大量专题制图设计问题有希望得到解决。当数据输入和用户要求格式化时,系统可在没有任何干预的情况下通过规则库指导完成全部必要的步骤。这样的一种方法将完全同交互式设计方式形成对比,而后一种方式完全是在有经验的制图员的操作控制之下进行的。考虑到问题的复杂性,采用规则引导和规则支持是必要的。规则也许有助于利用复杂相同步骤来代替通过全面而巨大的专家系统寻求解决方法的方式,但这似乎不现实。因为大量专题制图比这个目的复杂得多。本文提出的方案是与交互式模式并驾齐驱的逐渐形成的专家模型,并且对原型中几个部分的设计结构作了解释和阐述。

关键词：专题制图制图专家系统