Bibliografías temáticas / Composés volatils

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Literatura académica sobre el tema "Composés volatils"

Autor: Grafiati
Publicado: 12 de octubre de 2024
Última modificación: 31 de julio de 2025

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Artículos de revistas sobre el tema "Composés volatils"

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Filipiak, Wojciech, Matthias Wenzel, Clemens Ager, et al. "Molecular Analysis of Volatile Metabolites Synthesized by Candida albicans and Staphylococcus aureus in In Vitro Cultures and Bronchoalveolar Lavage Specimens Reflecting Single- or Duo-Factor Pneumonia." Biomolecules 14, no. 7 (2024): 788. http://dx.doi.org/10.3390/biom14070788.

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Current microbiological methods for pneumonia diagnosis require invasive specimen collection and time-consuming analytical procedures. There is a need for less invasive and faster methods to detect lower respiratory tract infections. The analysis of volatile metabolites excreted by pathogenic microorganisms provides the basis for developing such a method. Given the synergistic role of Candida albicans in increasing the virulence of pathogenic bacteria causing pneumonia and the cross-kingdom metabolic interactions between microorganisms, we compare the emission of volatiles from Candida albican
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2

Magaña, Lizeth O., Parvathy Prem, Ariel N. Deutsch, et al. "Surface Roughness at the Moon’s South Pole: The Influence of Condensed Volatiles on Surface Roughness at the Moon’s South Pole." Planetary Science Journal 5, no. 2 (2024): 30. http://dx.doi.org/10.3847/psj/ad18da.

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Abstract Condensed volatiles within lunar permanently shadowed regions are of high scientific and resource utilization importance. Volatiles remain elusive and difficult to observe directly, due to low direct solar illumination. In this work, we investigate correlations between, as well as possible effects of, condensed volatiles and surface roughness. We analyze topographic roughness at 50 m and 30–120 m baselines of the lunar south pole (poleward of 85° S). We focus on six south polar craters of interest and their directly surrounding non-cold-trap areas: Faustini, Shoemaker, Haworth, Cabeus
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Revadi, Santosh V., Vito Antonio Giannuzzi, Ramesh R. Vetukuri, William B. Walker, and Paul G. Becher. "Larval response to frass and guaiacol: detection of an attractant produced by bacteria from Spodoptera littoralis frass." Journal of Pest Science 94, no. 4 (2021): 1105–18. http://dx.doi.org/10.1007/s10340-021-01352-9.

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AbstractLarval frass in herbivorous lepidopterans is mainly composed of plant-derived material and microbes from the gut. Despite the fact that frass from conspecific larvae repels female moths in Spodoptera littoralis from oviposition, the role of frass volatiles on larval foraging behavior is largely unknown. Here, we show that larvae of S. littoralis walk upwind to larval frass volatiles in a wind tunnel assay. We identified the frass volatile guaiacol (2-methoxyphenol) as key ligand for the S. littoralis odorant receptor (OR) SlitOr59 which we expressed heterologously. We isolated guaiacol
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Osei-Owusu, Jonathan, William K. Heve, Owusu Fordjour Aidoo, et al. "Repellency Potential, Chemical Constituents of Ocimum Plant Essential Oils, and Their Headspace Volatiles against Anopheles gambiae s. s., Malaria Vector." Journal of Chemistry 2023 (July 14, 2023): 1–12. http://dx.doi.org/10.1155/2023/3848998.

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African malaria mosquitoes (Anopheles gambiae sensu stricto) transmit a malaria parasite (Plasmodium falciparum) to humans. The current control strategies for the vector have mainly focussed on synthetic products, which negatively impact the environment and human health. Given the potential use of environmentally friendly plant-derived volatiles as a control, this work aims to examine and compare the repellency potential of essential oils and headspace volatiles from Ocimum gratissimum, Ocimum tenuiflorum, and Ocimum basilicum and their chemical compositions. The repellency potential and chemi
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Mülner, Pascal, Alessandro Bergna, Philipp Wagner, et al. "Microbiota Associated with Sclerotia of Soilborne Fungal Pathogens – A Novel Source of Biocontrol Agents Producing Bioactive Volatiles." Phytobiomes Journal 3, no. 2 (2019): 125–36. http://dx.doi.org/10.1094/pbiomes-11-18-0051-r.

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Soilborne plant pathogens are an increasing problem in modern agriculture, and their ability to survive long periods in soil as persistent sclerotia makes control and treatment particularly challenging. To develop new control strategies, we explored bacteria associated with sclerotia of Sclerotinia sclerotiorum and Rhizoctonia solani, two soilborne fungi causing high yield losses. We combined different methodological approaches to get insights into the indigenous microbiota of sclerotia, to compare it to bacterial communities of the surrounding environment, and to identify novel biocontrol age
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Marčetić, Mirjana, Dragana Božić, Marina Milenković, Branislava Lakušić, and Nada Kovačević. "Chemical Composition and Antimicrobial Activity of Essential Oil of Different Parts of Seseli rigidum." Natural Product Communications 7, no. 8 (2012): 1934578X1200700. http://dx.doi.org/10.1177/1934578x1200700832.

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The chemical composition and antimicrobial activity of the essential oil of the Balkan endemic species Seseli rigidum Waldst. & Kit. (Apiaceae) was investigated. The monoterpene α-pinene was predominant in the volatile oil from aerial parts (57.4%) and fruit (23.3%). In the essential oil of the aerial parts limonene (6.7%), camphene (5.8%) and sabinene (5.5%) were also present in high amounts, and in the fruit oil, β-phellandrene (17.4%) and sabinene (12.9%). On the contrary, the root essential oil was composed almost entirely of the polyacetylene falcarinol (88.8%). The antimicrobial acti
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Lin, Lujie, Zhuqian Tang, Huijuan Xie, Lixin Yang, Bin Yang, and Hua Li. "Characterization of Differences in Chemical Profiles and Antioxidant Activities of Schisandra chinensis and Schisandra sphenanthera Based on Multi-Technique Data Fusion." Molecules 29, no. 20 (2024): 4865. http://dx.doi.org/10.3390/molecules29204865.

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Schisandra chinensis (Turcz.) Baill. (S. chinensis) and Schisandra sphenanthera Rehd. et Wils (S. sphenanthera) are called “Wuweizi” in traditional Chinese medicine, and they have distinct clinical applications. To systematically compare the differential characteristics of S. chinensis and S. sphenanthera, this study employed ultra-performance liquid chromatography–quadrupole time-of-flight mass spectrometry (UPLC-QTOF-MS) and gas chromatography–mass spectrometry (GC-MS) to construct chemical profiles of these two species from different regions. In total, 31 non-volatiles and 37 volatiles were
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Lyons, Sarah M., Sydney C. Morgan, Stephanie McCann, et al. "Unique volatile chemical profiles produced by indigenous and commercial strains of Saccharomyces uvarum and Saccharomyces cerevisiae during laboratory-scale Chardonnay fermentations." OENO One 55, no. 3 (2021): 101–22. http://dx.doi.org/10.20870/oeno-one.2021.55.3.4551.

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Each wine growing region hosts unique communities of indigenous yeast species, which may enter fermentation and contribute to the final flavour profile of wines. One of these species, Saccharomyces uvarum, is typically described as a cryotolerant yeast that produces relatively high levels of glycerol and rose-scented volatile compounds as compared with Saccharomyces cerevisiae, the main yeast in winemaking. Comparisons of fermentative and chemical properties between S. uvarum and S. cerevisiae at the species level are relatively common; however, a paucity of information has been collected on t
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9

Mülner, Pascal, Alessandro Bergna, Philipp Wagner, et al. "Microbiota Associated with Sclerotia of Soilborne Fungal Pathogens – A Novel Source of Biocontrol Agents Producing Bioactive Volatiles." Phytobiomes Journal, no. 3 (June 11, 2019): 125–36. https://doi.org/10.1094/PBIOMES-11-18-0051-R.

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Soilborne plant pathogens are an increasing problem in modern agriculture, and their ability to survive long periods in soil as persistent sclerotia makes control and treatment particularly challenging. To develop new control strategies, we explored bacteria associated with sclerotia of&nbsp;<em>Sclerotinia sclerotiorum</em>&nbsp;and&nbsp;<em>Rhizoctonia solani</em>, two soilborne fungi causing high yield losses. We combined different methodological approaches to get insights into the indigenous microbiota of sclerotia, to compare it to bacterial communities of the surrounding environment, and
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Imade, Rose O., and Buniyamin A. Ayinde. "GC-MS analysis and invitro cytotoxic activity of Ocimum basilicum (Lamiaceae) volatile oil and active fraction composed majorly of estragole." Journal of Pharmacy & Bioresources 19, no. 3 (2022): 143–52. http://dx.doi.org/10.4314/jpb.v19i3.3.

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Ocimum basilicum leaves contain some bioactive compounds and this study was designed to evaluate the cytotoxic efficacy of its volatile oil and fractions. Preliminary screening of the oil obtained by hydrodistillation was carried out using bench-top assay methods employing tadpoles of Raniceps ranninus (10-40 μg/mL), nauplii of Artemia salina (10-1000 μg/mL) and radicles of Sorghum bicolor seeds (1-30 mg/mL). Application of column chromatography and preparative TLC on the oil resulted in fractions that were tested alongside the oil on breast (AU 565) and cervical (HeLa) cancer cell lines at 50
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Tesis sobre el tema "Composés volatils"

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Lesne, Priscille. "Etude expérimentale de la solubilité des volatils C-H-O-S dans les basaltes alcalins italiens : simulations numériques du dégazage chimique : application à l'Etna." Phd thesis, Université d'Orléans, 2008. http://tel.archives-ouvertes.fr/tel-00347906.

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Le volcanisme d'arc est connu pour ses fortes teneurs en volatiles, qui lui confèrent un degré de dangerosité élevé. L'étude des volatils majeurs C, H, O, S, présents dans les systèmes magmatiques apporte des informations importantes à la compréhension du fonctionnement des systèmes volcaniques, du point de vue chimique et physique. Ces informations sont primordiales pour la prévention du risque volcanique. Dans ce travail, nous avons déterminé de façon expérimentale les lois de solubilité des volatils majeurs, H2O, CO2 et S (SO2, H2S) présents dans les systèmes volcaniques pour trois basaltes
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2

Villeneuve, Marie-Pier. "Profils en acides gras, abondance de composés volatils et propriétés sensorielles du lait de vaches recevant de la fléole des prés sous forme de foin, d'ensilage ou de pâturage." Thesis, Université Laval, 2013. http://www.theses.ulaval.ca/2013/29997/29997.pdf.

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Afin d’évaluer l’effet du type de fourrage utilisé dans la ration sur la flaveur ainsi que sur le profil en acides gras et en composés volatils du lait, des vaches laitières ont reçu une ration à base de fléole des prés sous forme de foin, d’ensilage ou de pâturage. Le rapport acide palmitique sur acide oléique fût inférieur pour le lait issu du traitement pâturage comparativement aux autres traitements. Le type de fourrages a également affecté les teneurs en acides gras, alcools, aldéhydes, cétones, lactones et terpènes du lait. Des panélistes ont été en mesures de différencier les laits des
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Libros sobre el tema "Composés volatils"

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Singer, Julie. Lyrical Humor(s) in the “Fumeur” Songs. Edited by Blake Howe, Stephanie Jensen-Moulton, Neil Lerner, and Joseph Straus. Oxford University Press, 2016. http://dx.doi.org/10.1093/oxfordhb/9780199331444.013.26.

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A small corpus of late fourteenth-century comical lyrics, most composed by the poet Eustache Deschamps, presents the lyricist or performer as afumeur(literally, “smoker”): a creative but volatile artist with a melancholic nature. These texts and their musical settings engage in sophisticated play on late medieval medical understandings of madness and its cures. A new reading of these lyrics in light of Deschamps’s theorization of “natural” and “artificial” music reveals that a particularlydisabledembodiment underpins that author’s poetic vision; and the existence of a corpus of closely related
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Capítulos de libros sobre el tema "Composés volatils"

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Crespo, Julia, Margarita García, Teresa Arroyo, Valeria Romero, and Juan M. Cabellos. "Effect of aging on lees on the volatile profile of Malvasia aromatica wines fermented with Saccharomyces native yeasts in PDO “Vinos de Madrid”." In New Advances in Saccharomyces [Working Title]. IntechOpen, 2023. http://dx.doi.org/10.5772/intechopen.1003667.

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The loss of aromatic and sensory quality in wines because of climate change in traditional winemaking areas is a challenge for winemakers. Aging on lees of the wine fermented with Saccharomyces native yeasts has been tested as a technique to try to improve the sensory characteristics of Malvasia aromatica white wines in PDO “Vinos de Madrid.” The grapes were pre-cold macerated and fermented with S. cerevisiae CLI 271 and CLI 889 (native yeast strains). Then, commercial lees were used for aging of wines for a five-month at low temperature in order to compare with the effect of S. cerevisiae CLI
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Wang, Rui, Chen-Hao Luo, Wen-jie Xia, et al. "Role of Alkaline Magmatism in Formation of Porphyry Deposits in Nonarc Settings: Gangdese and Sanjiang Metallogenic Belts." In Tectonomagmatic Influences on Metallogeny and Hydrothermal Ore Deposits: A Tribute to Jeremy P. Richards (Volume II). Society of Economic Geologists, 2021. http://dx.doi.org/10.5382/sp.24.12.

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Abstract The recent discovery of large Cenozoic porphyry copper deposits in the Tibetan Plateau has revealed atypical features. Their formation all postdate the India-Asia collision at 55 ± 10 Ma, and therefore they are not affiliated with normal arc magmatism. Three major nonarc porphyry copper belts or provinces in Tibet comprise the Gangdese porphyry Cu-Mo belt (&amp;gt;45 Mt Cu, 1.79 Mt Mo), the Yulong porphyry Cu-Mo belt (8.75 Mt Cu,1.04 Mt Mo), and the western Yunnan porphyry Cu-Mo-Au polymetallic province (~1 Mt Cu, ~1 Mt Mo, and 310 t Au). Alkaline volcanic rocks (lamprophyres, shoshon
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Actas de conferencias sobre el tema "Composés volatils"

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Rees, A. C., J. F. Davidson, J. S. Dennis, and A. N. Hayhurst. "The Rise and Combustion of Particles of Sewage Sludge and Petroleum Coke in a Slugging Fluidized Bed." In 18th International Conference on Fluidized Bed Combustion. ASMEDC, 2005. http://dx.doi.org/10.1115/fbc2005-78071.

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The rise-times, from just above the base to the top of the bed, of single particles of dried sewage sludge and of two types of petroleum coke were measured in a slugging bed of sand fluidized by air. The sewage sludge and the petroleum cokes contained, on an as received basis, 49.5, 9.0 and 0.5 wt.% volatile matter, respectively. The bed (i.d. 25.5 mm; height 1300 mm) was electrically heated to a fixed temperature between 700 and 900°C. Two sizes of sand were fluidized: +212, −300 μm and +710, −850 μm. The expansion of the bed was held constant by keeping the excess gas velocity at (U − Umf) =
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Soreanu, Gabriela, Igor Cretescu, Doina Lutic, Maria Harja, and Stelian Sergiu Maier. "STUDY OF MICROALGAE INFLUENCE ON CARBON CAPTURE FROM GASEOUS STREAMS WITHIN THE BIOTRICKLING FILTRATION PROCESS." In 22nd SGEM International Multidisciplinary Scientific GeoConference 2022. STEF92 Technology, 2022. http://dx.doi.org/10.5593/sgem2022/4.1/s19.50.

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In this work, a brief assessment of using microalgae (Arthrospira platensis PCC 8005) for lowering carbon emissions during biotrickling filtration of volatile organic compounds (VOCs) from air is performed. In this regard, the removal efficiency of acetic acid vapors (used as model VOC in this study) and carbon dioxide production from this process are evaluated in the presence of: (1) classical microorganisms (e.g. from compost), (2) mixture of compost microorganisms and microalgae, (3) microalgae. A blank trial (microorganisms-free) was considered as reference. The obtained results indicate t
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Hickmott, Curtis, Alireza Forghani, Victoria Hutten, et al. "A Numerical and Experimental Approach for Modeling Porosity Due to Entrapped Air and Volatiles Off-gassing During Manufacturing of Composite Structures." In SAMPE 2019 - Charlotte, NC. SAMPE, 2019. http://dx.doi.org/10.33599/nasampe/s.19.1627.

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Tandy, Jon, Vassilia Spathis, and Luke Alesbrook. "Cryogenic Capture of Hypervelocity Impact Ejecta." In 2022 16th Hypervelocity Impact Symposium. American Society of Mechanical Engineers, 2022. http://dx.doi.org/10.1115/hvis2022-51.

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Abstract The capture of impact ejecta is an important tool for the evaluation of chemical modification caused by hypervelocity impact events. Traditional systems typically employ foils, foams or aerogel to capture fast moving ejecta for elemental analyses. These devices are less appropriate for the examination of more volatile components within impact ejecta and may even cause additional chemical reactions on their surface leading to uncertainties in the subsequent analyses. This is particularly disadvantageous for capture systems onboard spacecraft searching for biologically relevant molecule
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Wang, Te-Chuan. "Comparison of Severe Accident Results by Using MAAP5 and MAAP4 Codes." In 18th International Conference on Nuclear Engineering. ASMEDC, 2010. http://dx.doi.org/10.1115/icone18-29017.

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MAAP5 (Modular Accident Analysis Program Rev. 5.0.0), developed by Fauske &amp; Associates, Inc.’s (FAI) based on the MAAP4 code, is a severe accident analysis code. It is a computer program capable of simulating the response and mitigation actions of light water reactor nuclear power plants (NPPs), including advanced boiling water reactor (ABWR) during severe accident. A specific loss of all core cooling accident sequence, LCLP-PF-R-N, based on Final Safety Analysis Report (FSAR) of Lungmen (ABWR) NPP, was selected as a based case and simulated by the MAAP5 and MAAP4 codes. The MAAP5 and MAAP
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Butinar, Bojan. "Beer consumption and health: Can advanced analytics deliver the right answers to technologists and consumers?" In VII naučno-stručni simpozijum sa međunarodnim učešćem "Pivo, pivarske sirovine i tržište". Institute of Field and Vegetable Crops Research, Novi Sad, 2024. https://doi.org/10.5937/pivos24002b.

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Beer is a beverage with more than 8000-6000 years of history, and the process of brewing has not changed much over the centuries though the beer consumed today tastes very different than its ancient predecessors. Present times offer diverse technologies and beer manufacture and brewing types to fulfill the consumers' and growing nutritional demands with new types of beer, including dietary plant proteins, low-calorie beers, fruit beers, beers containing functional agents, gluten-free beers, craft-produced beers (in every possible meaning), lowand non-alcoholic beers (NAB), with new cereals bei
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Mohanty, Rituparna, Yogin Patel, Bryan Llumiquinga, and Jonathan P. Singer. "Dynamic Mechanical Properties of Carbon Fiber Reinforced With Macropore-Infused Nanoparticle Emulsion Thermoset (MINETs)." In ASME 2024 19th International Manufacturing Science and Engineering Conference. American Society of Mechanical Engineers, 2024. http://dx.doi.org/10.1115/msec2024-125364.

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Abstract Macropore-infused nanocomposite emulsion thermosets (MINETs) represent an innovative category of nanocomposite materials synthesized using common industrial constituents such as epoxy resin, nanoparticles, a liquid porogen, and surfactant. They are prepared by creating a microphase separation of two immiscible phases (here being the polymeric resin and non-volatile oil) stabilized by a surfactant and jammed with a nanoparticle or particle blend by employing high shear mixing. Following ambient temperature curing and optional oil phase extraction through rinsing results in MINETs havin
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