يعرض 1 - 20 نتائج من 188,925 نتيجة بحث عن '"CHIMIE"', وقت الاستعلام: 0.48s تنقيح النتائج
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    المصدر: NOSE2024, International Conference on ENVIRONMENTAL MONITORING of ODOURS and VOCs, 15-18 September 2024

    Relation: Volatile organic compounds (VOCs) serve pivotal functions in the intricate interactions withinplant ecosystems, facilitating communication among plants and other b i o t i c constituents suchas pollinators and soil organisms. While airborne VOCs have garnered considerable scientificattention, belowground VOCs remain comparatively understudied. Nevertheless, thesebelowground compounds intricately mediate signaling pathways between plants, soil bacteria,fungi, belo wground insects, nematodes, and bacterial consortia. The primary limitation tounderstanding subterranean VOC dynamics lies in technical challenges. Various methodologiesexist for their investigation, including ex situ non destructive extraction of plants from theirsubstrate for root VOC analysis (emi tted VOCs) VOCs), or root tissue grinding for VOC profiling VOC scontained ther ein)ein). In situ approaches encompass static methods such as Solid PhaseMicroextraction (SPME) (placed in an inert tube) and dynamic techniques like DynamicHeadspace Sampling (DHS), employing either air extraction (pull) or injection (push) forsampling (or both in push pull device) device). The heterogeneous and complex nature of soil poseschallenges in identifying the precise origins of sampled VOCs, which may emanate frombacterial, fungal, root, insect, or organic matter sources. Furthermore, sampling efficacy iscontingent upon soil physicochemical parameters such as pH, temperature, and pore size .While controlled environment studies or inert substrate replacements (e.g. glass beads) offerexperimental control, they may deviate from ecological realism. We will present the advantagesand disadvantages of the different strategies, indicating which scientific questions they are bestsuited to answer. Additionally, we showcase home made devices developed in our laboratory,designed to sample belo w ground VOCs and elucidate their role in plant plant interactions orallelopathic phenomena

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    المؤلفون: Purcaro, Giorgia

    المصدر: urn:isbn:978-618-5558-09-3
    Book of abstract: the 3rd European Sample Preparation Conference (EuSP2024) and the 2nd Green and Sustainable Analytical Chemistry Conference (GSAC2024) (2024-09-04); the 3rd European Sample Preparation Conference (EuSP2024) and the 2nd Green and Sustainable Analytical Chemistry Conference (GSAC2024), Chania, Greece [GR], 15-18 September 2024

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    Additional Titles: Popularly known as: Chem abstracts
    Chemical abstracts student edition
    Chemical abstracts (Online)

    مصطلحات الفهرس: Computer network resources., Abstracts., Databases., Indexes.

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    Additional Titles: Pure & applied chemistry

    URL: http://books.google.com/books?id=mSASAAAAIAAJ
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    المؤلفون: Loosveldt, Laurent

    المصدر: 31st Annual Meeting of the Royal Statistical Society of Belgium, Ghent, Belgium [BE], 7-8 novembre 2024

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    المساهمون: CESAM - Complex and Entangled Systems from Atoms to Materials - ULiège

    المصدر: Young Quantum Information Scientist (YQIS) conference, Paris, France [FR], From 6 to 8 November 2024

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