يعرض 1 - 20 نتائج من 9,950 نتيجة بحث عن '"vocs"', وقت الاستعلام: 0.73s تنقيح النتائج
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    Dissertation/ Thesis
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    Dissertation/ Thesis
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    Conference

    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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    Dissertation/ Thesis

    المؤلفون: Perelló Roig, Rafel

    Thesis Advisors: Verd Martorell, Jaume, Bota Ferragut, Sebastian Antonio

    المصدر: TDX (Tesis Doctorals en Xarxa)

    وصف الملف: application/pdf

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    Academic Journal
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    Academic Journal
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    Academic Journal
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    Academic Journal
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    Academic Journal
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    Academic Journal

    المؤلفون: Reem Albilali

    المصدر: Arab Journal of Basic and Applied Sciences, Vol 31, Iss 1, Pp 53-64 (2024)

    وصف الملف: electronic resource

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    Academic Journal
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    Academic Journal
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    Academic Journal
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    Academic Journal
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    Academic Journal
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    Academic Journal
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    Academic Journal
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    Academic Journal

    المصدر: International Journal of Occupational Medicine and Environmental Health, Vol 37, Iss 3, Pp 351-359 (2024)

    مصطلحات موضوعية: children, asthma, atopy, lung function tests, asthma monitoring, vocs, Medicine

    وصف الملف: electronic resource

    Relation: https://ijomeh.eu/Exhaled-volatile-organic-compounds-VOCs-for-prediction-of-asthma-exacerbation-in,191400,0,2.html; https://doaj.org/toc/1232-1087; https://doaj.org/toc/1896-494X

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    Academic Journal
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    Dissertation/ Thesis

    المؤلفون: Anfruns Bagaria, Alba

    المساهمون: University/Department: Universitat de Girona. Institut de Medi Ambient, University/Department: Universitat de Girona. Departament d'Enginyeria Química, Agrària i Tecnologia Agroalimentària

    Thesis Advisors: Martín, María J. (María José), Montes Morán, Miguel Ángel

    المصدر: TDX (Tesis Doctorals en Xarxa)

    وصف الملف: application/pdf