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A quantum cascade laser infrared spectrometer for cO_2 stable isotope analysis：Field implementation at a hydrocarbon contaminated site under bio-remediation

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Journal of Environmental Sciences 2016年第2期28卷 60-74页

作者： christophe Guimbaud cécile noel Michel chartier Valéry catoire Michaela Blessing Jean christophe Gourry claude Robert Laboratoire de Physique et de chimie de l'Environnement et de l'Espace (LPc2E) CNRS et Universite d'Orleans (UMR 7328)45071 Orleans cedex 2 France Bureau de Recherches Geologiques et Minieres (BRGM) 45060 Orleans cedex 2 France

Real-time methods to monitor stable isotope ratios of cO_2 are needed to identify biogeochemical origins of cO_2 emissions from the soil–air interface. An isotope ratio infra-red spectrometer（IRIS） has been developed to measure cO_2 mixing ratio with δ~13c isotopic signature, in addition to mixing ratios of other greenhouse gases（cH_4, N2_O）. The original aspects of the instrument as well as its precision and accuracy for the determination of the isotopic signature δ~13c of cO_2 are discussed. A first application to biodegradation of hydrocarbons is presented, tested on a hydrocarbon contaminated site under aerobic bio-treatment. cO_2 flux measurements using closed chamber method is combined with the determination of the isotopic signature δ~13c of the cO_2 emission to propose a non-intrusive method to monitor in situ biodegradation of hydrocarbons. In the contaminated area, high cO_2 emissions have been measured with an isotopic signature δ~13c suggesting that cO_2 comes from petroleum hydrocarbon *** first field implementation shows that rapid and accurate measurement of isotopic signature of cO_2 emissions is particularly useful in assessing the contribution of contaminant degradation to the measured cO_2 efflux and is promising as a monitoring tool for aerobic bio-treatment.

关键词： Isotope ratio infrared spectrometry Isotopic signature δ^(13)c of cO_2 Biodegradation monitoring Hydrocarbons BTEX

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Bulk petroleum geochemistry of shales from the onshore Rio del Rey Basin,cameroon

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Energy Geoscience 2022年第2期3卷 111-119页

作者： christopher M.Agyingi noel c.Tangko Emmanuel Eseme Department of Geology University of BueaCameroon P.O.Box 63BueaCameroon Activation Laboratories Ltd AncasterONCanada

Petroleum production in the Rio del Rey Basin,which is an extension of the Niger Delta of Nigeria into cameroon,has been limited to the Tertiary offshore portion since the late *** to dedlining reserves in this offshore portion,the onshore cretaceous portion of the basin attracted significant attention in the last *** the present *** from outcrops in the onshore portion of the basin were analyzed to evaluate their potential as source rocks,assess hydrocarbon generation,and highlight their signifcance for *** observations,total organic carbon(TOc)measure-ments,and Rock Eval pyrolysis were used to generate data for these ***-eval S2 values(0.42-3 mg Hc/g rock)based on measured present-day TOc values(0.58-2.44 wtx)of the shales studied signify poor to fair source rock potentials,whereas calculated S2 values(1.74-8.19 mg Hc/g rock)based on estimated original TOc values(0.67-2.87 wt%)produced fair to good source rocks containing Type Ⅱ/Ⅲ kerogen,which were transformed by maturity to the present-day Type Ⅲ/Ⅳ *** of the samples based on Tmax values varying between 439 and 471℃are equivalent to maturity values ranging between 0.74% R_(r) and 1.32% R_(r), and these represent the peak oil to condensate/wet gas zones of hy-drocarbon *** results demonstrate that mature source rocks are present in the onshore part of the Rio del Rey Basin,and thus,it is suitable for petroleum exploration.

关键词： Shale Rio del Rey Basin Total organic carbon Rock-eval Petroleum geochemistry cameroon

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Atomic-scale structural signature of dynamic heterogeneities in metallic liquids

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npj computational Materials 2017年第1期3卷 179-188页

作者： Alain Pasturel noel Jakse University Grenoble Alpes CNRSGrenoble INPSIMaPF-38000 GrenobleFrance

With sufficiently high cooling rates,liquids will cross their equilibrium melting temperatures and can be maintained in a metastable undercooled state before *** of undercooled liquids reveal several intriguing dynamic phenomena and because explicit connections between liquid structure and liquids dynamics are difficult to identify,it remains a major challenge to capture the underlying structural link to these *** initio molecular dynamics(AIMD)simulations are yet especially powerful in providing atomic-scale details otherwise not accessible in *** the AIMD-based study of cr additions in Al-based liquids,we evidence for the first time a close relationship between the decoupling of component diffusion and the emergence of dynamic heterogeneities in the undercooling *** addition,we demonstrate that the origin of both phenomena is related to a structural heterogeneity caused by a strong interplay between chemical short-range order(cSRO)and local fivefold topology(ISRO)at the short-range scale in the liquid phase that develops into an icosahedral-based medium-range order(IMRO)upon ***,our findings reveal that this structural signature is also captured in the temperature dependence of partial pair-distribution functions which opens up the route to more elaborated experimental studies.

关键词： structural dynamic signature

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Synthesis of Ag and cd nanoparticles by nanosecond-pulsed discharge in liquid nitrogen

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Frontiers of chemical Science and Engineering 2019年第2期13卷 360-368页

作者： Mahmoud Trad Alexandre Nominé Natalie Tarasenka Jaafar Ghanbaja cédric noel Malek Tabbal Thierry Belmonte Universite de Lorraine CNRSIJLF-54000 NancyFrance B.I. Stepanov Institute of Physics National Academy of Sciences of BelarusMinskBelarus Department of Physics American University of BeirutBeirutLebanon

The synthesis of cdO, Ag2O (5nm) and Ag (~20~30 nm) nano-objects is achieved simultaneously by nanosecond-pulsed discharges in liquid nitrogen between one cadmium electrode and one silver electrode. Oxidation occurs when liquid nitrogen is fully evaporated and nanoparticles are in contact with the air. No alloy is formed, whatever the conditions, even though both elements are present simultaneously, as showed by timeresolved optical emission spectroscopy. This lack of reactivity between elements is attributed to the high pressure within the discharge that keeps each metallic vapor around the electrode it comes from. Each element exhibits a specific behavior. cubic cd particles, formed at 4 kV, get elongated with filamentary tips when the applied voltage reaches 7 and 10 kV. cd wires are formed by assembly in liquid nitrogen of cd nanoparticles driven by dipole assembly, and not by dielectrophoresis. On the contrary, silver spherical particles get assembled into 2D dendritic structures. The anisotropic growth of these structures is assumed to be due to the existence of pressure gradients.

关键词： spark discharges submerged discharges timeresolved optical emission spectroscopy liquid nitrogen

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MXene supported surface plasmons on telecommunications optical fibers

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Light(Science & Applications) 2022年第2期11卷 212-220页

作者： Victor Pacheco-Peña Toby Hallam noel Healy School of Mathematics Statistics and PhysicsNewcastle UniversityNewcastle Upon Tyne NE17RUUK

MXenes,an emerging class of two-dimensional materials,exhibit characteristics that promise significant potential for their use in next generation optoelectronic *** interplay between interband transitions and boundary effects offer the potential to tune the plasma frequencies over a large spectral range from the near-infrared to the *** tuneability along with the‘layered’nature of the material not only offer the flexibility to produce plasmon resonances across a wide range of wavelengths,but also add a degree of freedom to the sensing mechanism by allowing the plasma frequency to be *** we show,numerically,that MXenes can support plasmons in the telecommunications frequency range and that surface plasmon resonances can be excited on a standard MXene coated side polished optical ***,presenting the tantalising prospect of highly selective distributed optical fiber sensor networks.

关键词： fibers excited transitions

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The Fingerprint of Global Warming in the Tropical Pacific

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Advances in Atmospheric Sciences 2016年第4期33卷 I0001-I0002页

作者： noel KEENLYSIDE Dietmar DOMMENGET Geophysical Institute University of Bergen/Bjerknes Center for Climate Research Bergen 5007 Norway Nansen Environmental and Remote Sensing center/Bjerknes center for climate Research Bergen 5006 Norway ARc centre of Excellence for climate System Science School of Earth Atmosphere and Environment Monash University Clayton VIC Australia

The impacts of global warming will be felt most strongly at regional scales. However, great uncertainties exist in climate change projections at these scales, limiting our ability to provide useful information for the planning and implementation of appropriate adaptation measures. Thus, there is an urgent need to reduce these uncertainties.

关键词： EPSW The Fingerprint of Global Warming in the Tropical Pacific

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Gibberellin signaling turns blue

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Molecular Plant 2021年第8期14卷 1226-1228页

作者： noel Blanco-Tourinan David Alabadi Plant Vascular Development Group ETH Zurich8092 ZurichSwitzerland Instituto de Biologia Molecular y celular de Plantas(cSIc-UPV) 46022 ValenciaSpain

The effect of envir on mental light on plant growth is mediated,at least in part,by the hormones gibberellins(GAs).The current model is that light signaling affects the GA pathway by transcrip-tional regulation of GA metabolism genes and by degradation of the negative regulators DELLA proteins by *** new studies provide evidenee showing that the blue light photoreceptor cRY1 directly regulates GA signaling.

关键词： cRY1 Gibberellin photoreceptor

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长江中下游成矿带成矿规律和成矿模式

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岩石学报 2017年第11期33卷 3353-3372页

作者：周涛发范裕王世伟 noel c WHITE 合肥工业大学资源与环境工程学院合肥230009 合肥工业大学矿床成因与勘查技术研究中心合肥230009

长江中下游成矿带作为中国东部重要的成矿带之一,成矿地质条件、成矿规律和成矿模式的相关研究已经十分深入,形成了一系列公认的理论研究成果,本文重点论述了成矿带成矿地质条件和成矿规律方面研究的新进展,并在此基础上构筑了成矿带的... 详细信息

长江中下游成矿带作为中国东部重要的成矿带之一,成矿地质条件、成矿规律和成矿模式的相关研究已经十分深入,形成了一系列公认的理论研究成果,本文重点论述了成矿带成矿地质条件和成矿规律方面研究的新进展,并在此基础上构筑了成矿带的成矿模式。本文主要开展了以下总结工作:(1)将成矿带的构造要素突破以往按构造单元分解的做法,确立跨构造单元的"复合构造系统",结合成矿带成岩成矿作用特点,重新确定了长江中下游成矿带的范围,并对成矿亚带进行了重新划分;(2)收集汇总了长江中下游成矿带近年来国内外学者最新的成岩成矿年龄数据,总结了矿床时空分布规律;(3)从地质,地球物理和地球化学等方面,总结归纳了沿基底结合带复活的网状断裂系统,阐明了成矿带的控矿构造格架,分析了长江中下游成矿带的成因规律;(4)补充和完善了断隆区和断凹区的成矿模式,并初步构筑了长江中下游成矿带综合成矿模式。提出长江中下游成矿带内主体成岩成矿作用总体上分为走滑挤压阶段(146~135Ma)、走滑引张阶段(135~126Ma)和拉张伸展阶段(126~123Ma)等三个阶段,古太平洋板块作用导致的壳幔过程,引发含元古代弧岩浆岩源区活化和中生代的构造活化("双活化")是长江中下游成矿带形成的主要机制。

关键词：长江中下游成矿带成矿规律成矿模式成矿背景

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Genesis of Mafic Microgranular Enclaves in the Shaocunwu Granodiorite,Southern china,and their Implications:Evidence from Zircon and Whole-rock Geochemistry

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Acta Geologica Sinica(English Edition) 2021年第3期95卷 761-779页

作者： JIANG Hua ZHANG Dayu WANG Shiwei FU Xiang YE Longxiang noel c.WHITE ZHOU Taofa School of Resources and Environmental Engineering Hefei University of TechnologyHefei 230009China Ore Deposit and Exploration centre Hefei University of TechnologyHefei 230009China Anhui Province Engineering Research center for Mineral Resources and Mine Environments Hefei 230009China

Magmatic microgranular enclaves(MMEs)are widely developed in the Shaocunwu granodiorite at the northeast margin of the eastern Jiangnan orogenic *** geology showed that the MMEs occur as irregular ellipsoids near the edge of the intrusion,and consist of diorite,dominantly composed of amphibole,biotite,and plagioclase grains,with minor acicular *** U-Pb dating showed the ages of the host granodiorites and MMEs are 145.9±1.1 Ma and 145.6±2.5 Ma,respectively,indicating both originated during coeval late Jurassic ***-rock geochemical results show that the host granodiorite and MMEs have similar rare earth and trace element partition curves in spider grams,and similar 87Sr/86Sr,and 147Nd/144Nd isotope ratios,and their zircon 177Hf/176Hf isotopic ratios are *** studies indicate that both the host granodiorite and MMEs formed by mixing of coeval *** Ti thermometers and oxygen fugacity of the host granodiorite and the MMEs show high oxygen fugacity,similar to that of W-cu(Mo)mineralized granitoids in the eastern Jiangnan orogenic belt.A similar magma mixing process was probably one of the mechanisms that generated the W-cu(Mo)fertile melts.

关键词： MME zircon U-Pb dating Sr-Nd-Hf isotope magma mixing Shaocunwu granodiorite South Anhui

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Overview on signal transduction cascades regulation roles of garlic and its bioactive constituents

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Food Science and Human Wellness 2024年第5期13卷 2353-2362页

作者： Ammad Ahmad Farooqi Iqra Mobeen Rukset Attar Khalida I.noel Baojun Xu William c.cho Institute of Biomedical and Genetic Engineering(IBGE) Islamabad 44000Pakistan Khursheed Rasheed Hospital Lahore Lahore 53720Pakistan Department of Obstetrics and Gynecology Yeditepe UniversityAtaşehir 34755Turkey Human Anatomy Department College of MedicineAl-Mustansiriyah UniversityBaghdad 10036Iraq Food Science and Technology Program Department of Life SciencesBNU-HKBU United International CollegeZhuhai 519087China Department of clinical Oncology Queen Elizabeth HospitalHong Kong G514TFChina

High-throughput technologies in combination with modern exciting advancements in mass spectrometry-based proteomics and data analysis pipelines have empowered comprehensive characterization of disease phenotypes and their mechanistic regulation by dietary agents and bioactive molecules at unprecedented dimensionality and ***-ordinary breakthroughs in the field of nutrigenomics have leveraged our understanding altogether to a new level of *** researchers have extensively analyzed health promoting and pharmacologically significant properties of garlic(Allium sativum).Importantly,garlic and its biologically active chemicals targeted oncogenic signaling *** this mini-review we have attempted to summarize how garlic and its bioactive constituents regulated signal transduction cascades in cell culture studies and tumor-bearing mice.

关键词： cancer Nutrigenomics Signaling Apoptosis Allium sativum

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