Relevant bibliographies by topics / Micro-extraction

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Micro-extraction'

Author: Grafiati
Published: 4 June 2021
Last updated: 10 March 2023

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Journal articles on the topic "Micro-extraction"

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Zarabi, Sanaz, Rouhollah Heydari, and Sayed Zia Mohammadi. "Dispersive micro-solid phase extraction in micro-channel." Microchemical Journal 170 (November 2021): 106676. http://dx.doi.org/10.1016/j.microc.2021.106676.

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Kanafusa, Sumiyo. "Solid Phase Micro Extraction: SPME." Nippon Shokuhin Kagaku Kogaku Kaishi 65, no. 4 (2018): 215. http://dx.doi.org/10.3136/nskkk.65.215.

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Chisvert, Alberto, Soledad Cárdenas, and Rafael Lucena. "Dispersive micro-solid phase extraction." TrAC Trends in Analytical Chemistry 112 (March 2019): 226–33. http://dx.doi.org/10.1016/j.trac.2018.12.005.

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Assmann, N., A. Ładosz, and P. Rudolf von Rohr. "Continuous Micro Liquid-Liquid Extraction." Chemical Engineering & Technology 36, no. 6 (April 11, 2013): 921–36. http://dx.doi.org/10.1002/ceat.201200557.

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Zhang, Lianfu, Dehua Mou, and Yanshan Du. "Procyanidins: extraction and micro- encapsulation." Journal of the Science of Food and Agriculture 87, no. 12 (2007): 2192–97. http://dx.doi.org/10.1002/jsfa.2899.

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Gao, Hongwei, Lianggui Xie, Shuliang Wen, and Yong Kuang. "Micro-Doppler Signature Extraction from Ballistic Target with Micro-Motions." IEEE Transactions on Aerospace and Electronic Systems 46, no. 4 (October 2010): 1969–82. http://dx.doi.org/10.1109/taes.2010.5595607.

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He, Man, Xiaoxiao Ou, Yuxin Wang, Zhenna Chen, Dandan Li, Beibei Chen, and Bin Hu. "Porous organic frameworks-based (micro)extraction." Journal of Chromatography A 1609 (January 2020): 460477. http://dx.doi.org/10.1016/j.chroma.2019.460477.

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Huang, Xiaojia, and Dongxing Yuan. "Recent Developments of Extraction and Micro-extraction Technologies with Porous Monoliths." Critical Reviews in Analytical Chemistry 42, no. 1 (January 2012): 38–49. http://dx.doi.org/10.1080/10408347.2012.629950.

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Ye, Wei Lin. "The Extraction of Buzzwords for Micro-Blogs." Advanced Materials Research 926-930 (May 2014): 2840–44. http://dx.doi.org/10.4028/www.scientific.net/amr.926-930.2840.

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This paper proposes a method of buzzwords extraction for micro-blogs using buzzwords word-formation features and event correlation. This method includes four important steps. The first step finds out all the candidate words from micro-blog topics by using repeated string searching algorithm. The second step filters the candidate words based on the repeat string properties and language model. The third step extracts the candidate buzzwords through the constraint of words role relationship and special structure model. The last step is to filter the buzzwords according to the words event correlation. The experiments show that the method is accurately and efficiently to extract buzzwords.
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Cruz-Vera, M., R. Lucena, S. Cárdenas, and M. Valcárcel. "Sample treatments based on dispersive (micro)extraction." Analytical Methods 3, no. 8 (2011): 1719. http://dx.doi.org/10.1039/c1ay05201b.

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Dissertations / Theses on the topic "Micro-extraction"

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Zill-E-Huma, Huma. "Hydrodiffusion assistée par micro-ondes : nouvelle technique d'éco-extraction." Phd thesis, Université d'Avignon, 2010. http://tel.archives-ouvertes.fr/tel-00547428.

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Microwave hydrodiffusion and gravity (MHG) technique is an attempt towards development of green extraction, as this environment friendly technique has completely eliminated the use of organic solvents. After describing the effectiveness of microwave radiations in extraction field in the first part of this manuscript, we have optimized this noval extraction method to get antioxidants rich extract. Along with studying the temperature distributions in different parts of plant material under the effect of microwave irradiations, we have analyzed the influence of microwaves in enhancing the antioxidant activity of extracts by using different tests. We have got the promising results concerning about the antioxidant rich extracts of different onion varieties and sea buckthorn in generalization step against the conventional solvent extracts. The application of vacuum system in this extraction system helped in restraining the limitations like dry extract yield and flavonol contents. Incomparison to traditional and recent extraction systems, the MHG extracts doesn't require any filtration and purification steps as it works in absence of any solvent and water and are highly recommended for direct application in industrial products
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Zill-e-Huma, Huma. "Hydrodiffusion assistée par micro-ondes : nouvelle technique d'éco-extraction." Thesis, Avignon, 2010. http://www.theses.fr/2010AVIG0239/document.

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Microwave hydrodiffusion and gravity (MHG) technique is an attempt towards development of green extraction, as this environment friendly technique has completely eliminated the use of organic solvents. After describing the effectiveness of microwave radiations in extraction field in the first part of this manuscript, we have optimized this noval extraction method to get antioxidants rich extract. Along with studying the temperature distributions in different parts of plant material under the effect of microwave irradiations, we have analyzed the influence of microwaves in enhancing the antioxidant activity of extracts by using different tests. We have got the promising results concerning about the antioxidant rich extracts of different onion varieties and sea buckthorn in generalization step against the conventional solvent extracts. The application of vacuum system in this extraction system helped in restraining the limitations like dry extract yield and flavonol contents. Incomparison to traditional and recent extraction systems, the MHG extracts doesn’t require any filtration and purification steps as it works in absence of any solvent and water and are highly recommended for direct application in industrial products
L'hydrodiffusion générée par micro-ondes est une nouvelle technique d'extraction mise au point au sein de l'Université d'Avignon et des Pays de Vaucluse. Ce procédé est une combinaison entre une technique traditionnelle et une technologie innovante. En effet, le chauffage par micro-ondes a permis d'initier et de générer le transfert de matière et de chaleur de l"intérieur des matrices végétales (oignons) vers l'extérieur et de réduire de façon considérable les temps d'extraction des antioxydants sans aucune intervention de solvant. A titre de comparaison, les polyphénols de différentes variétés d'oignons ont été extraits par l'hydrodiffusion générée par micro-ondes et par la technique conventionnelle, l'extraction par solvant. Les rendements obtenus par micro-ondes sont presque identiques à ceux obtenus à l'aide d’un solvant alors que les temps d'extraction sont réduits. La capacité antioxydante des extraits micro-ondes est supérieure à celle obtenue par technique conventionelle. Ce qui présage des potentialités d'application dans le domaine agroalimentaire en particulier pour la valorisation des co-produits. Une étude cinétique de l'extraction, ainsi qu'une observation au microscope optique(cytologie) des matrices traitées soumises aux micro-ondes et au solvant ont mis en évidence la spécificité de l'extraction sans solvant assistée par micro-ondes au niveau des mécanismes de libération et d'extraction des molécules antioxydantes au sein du végétal. L'effet des micro-ondes a pour conséquence une libération plus rapide des principes actifs contenue dans la plante grâce à l'ouverture quasi instantanée des glandes et l'explosion des cellules. L'explication de la différence de composition chimique entre les procédés d'extraction par solvant et par micro-ondes pourrait être basée principalement sur des phénomènes de solubilité, de polarisation diélectrique ainsi qu'un transfert de matière et de chaleur inversé
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Gaetano, Yannick de. "Nouveaux systèmes complexants sélectifs d'ions métalliques supportés." Thesis, Nancy 1, 2010. http://www.theses.fr/2010NAN10029/document.

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L'objectif de ce travail porte sur la valorisation de dérivés du calix[4]arène en tant qu'agents d'extraction sélectifs de métaux de transition, immobilisés sur polymères naturels (cellulose) ou artificiels (résines polystyrèniques). Dans une première partie, nous avons élaboré une stratégie de synthèse multi-étapes, permettant l'introduction d'unités bipyridines (n= 2 ou 3) sur la partie basse du calix[4]arène, ainsi que l'incorporation d'un bras espaceur aminé destiné au greffage. L'étude des stoechiométries Métal/Ligand avec différents cations (Zn(II), Ni(II)…) a été entreprise en solution par spectroscopie UV-visible. Dans un deuxième temps, les ligands obtenus ont alors été greffés, sur des résines PS-DVB porteuses de fonctions aldéhyde (Wang) ou chlorméthyle (Merrifield), ainsi que sur un polymère naturel (coton). Les taux de greffages obtenus ont alors été déterminés par UV-visible et par chromatographie ionique. Les capacités extractives de ces polymères en milieu aqueux/organique, ont été ensuite étudiées, tout d'abord sur des solutions monométalliques, puis sur des mélanges plus complexes. La dernière partie de notre travail a porté sur la séparation d'un mélange ternaire Ag/Zn/Pb, d'intérêt potentiellement économique, en mettant au point un processus d'extraction solide-liquide complété par le relargage sélectif en solution. Ce processus nous à amené à intégrer une étude de recyclabilité et de stabilité. La séparation effective de Ag, Zn et Pb a ainsi été démontrée
The aim of the present work is dedicated to the valorization of calix[4]arene derivatives as transition-metal selective extraction agents, immobilized onto natural polymers (cellulose) or artificial (polystyrenic resins). We have elaborated a multi-step synthesis strategy, allowing the introduction of bipyridine units (2 or 3) on the lower rim and the incorporation of an amine spacer arm dedicated to grafting. Metal/Ligand stoechiometries studies in solution were undertaken by UV-Visible spectroscopy.Then, the ligands obtained were grafted onto PS-DVB resins functionnalized with aldehyde groups (Wang) or cholomethylene groups (Merrifield), and onto natural polymer (cotton). The grafting rates were determined by UV-Visible spectroscopy and ionic chromatography. Their extractive capacities were studied in aqueous/organic media, firstly for monometallic solutions then for more complex mixtures.The last part of our work was dedicated to the separation of a ternary mixture Ag/Zn/Pb, which could have an economic interest. A solid-liquid extraction process was developped, integrating recyclability and stability studies. The effective separation of these 3 metal ions was proved
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Fogle, Orelle Ryan. "Human Micro-Range/Micro-Doppler Signature Extraction, Association, and Statistical Characterization for High-Resolution Radar." Wright State University / OhioLINK, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=wright1307733951.

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Dejoye, Céline. "Eco-extraction et analyse de lipides de micro-algues pour la production d'algo-carburant." Thesis, Avignon, 2013. http://www.theses.fr/2013AVIG0251/document.

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La biodiversité des micro-algues constitue un réel potentiel pour la recherche et l’industrie. En comparaison des plantes terrestres, elles sont une piste prometteuse pour les biocarburants. Néanmoins, un certain nombre de verrous technologiques restent à lever comme l’extraction de l’huile algale. L’objectif de cette thèse a donc consisté en l’innovation et le développement de nouvelles méthodologies dits « vertes » d’extraction de lipides de micro-algues pour une application biocarburant.La première partie de ce manuscrit propose une alternative à l’utilisation de solvants pétrochimiques (n-hexane) pour l’extraction des lipides à partir d’une biomasse sèche grâce aux solvants terpéniques d’origine végétale.Ces résultats encourageants ont permis dans une seconde partie de s’orienter vers le développement d’une technique permettant l’extraction des lipides de micro-algues humides (80% d’humidité) par des solvants terpéniques : le SDEP (Simultaneous Distillation and Extraction Process).Afin d’accélérer le processus d’extraction, dans la troisième et dernière partie de ce travail les micro-ondes ont permis d’intensifier ce procédé. Les micro-ondes permettent un échauffement rapide de l’eau environnante et contenue dans les cellules impliquant ainsi une libération rapide du contenu cellulaire vers le milieu extérieur. Ce travail a consisté en l’intensification et l’optimisation de cette technique d’extraction (SDEP) destinée à l’extraction des lipides à partir de micro-algues humides : le SDEP assisté par micro-ondes. L’appareillage permet des extractions rapides, non destructrices et généralisables à différentes espèces de micro-algues discutées dans cette troisième partie
The biodiversity of microalgae is a real potential for research and industry. Compared to terrestrial plants, they are a promising route for biofuels. Still, a number of technological locks is to lift as the the algal oil extraction. The objective of this thesis has consisted of innovation and development of new methodologies, so-called “green” extraction of lipid of microalgae for biofuel application.The first part of this manuscript proposes an alternative to the use of petrochemical solvents (n-hexane) extraction of lipids on a dry biomass with terpene solvents from plant origin.These encouraging results have allowed in a second part of move towards the development of a technique for the extraction of lipids of wet microalgae (80% of humidity) by terpene solvents; the SDEP (Simultaneous Distillation and Extraction Process).To accelerate the process of extraction, in the third and final part of this work the microwaves have allowed to intensify this process. Microwave allow a fast heating of water surrounding and contained in cells thus implying a rapid release of the cell contents into the environment. Our work consisted in the intensification and optimization of the extraction technique (SDEP) intended for the extraction of lipids from wet microalgae: SDEP assisted by microwaves. The apparatus allows rapid and non-destructive extractions that can be generalizable for different species of microalgae discussed in this third part
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Fouard, Céline. "Extraction de paramètres morphométriques pour l'étude du réseau micro-vasculaire cérébral." Phd thesis, Université Nice Sophia Antipolis, 2005. http://tel.archives-ouvertes.fr/tel-00308884.

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L'objectif de cette thèse est de fournir des outils logiciels aux anatomistes et neuro-anatomistes afin de permettre une analyse tridimensionnelle quantitative des réseaux micro-vasculaires cérébraux. Cette analyse demande des images de très haute résolution (permettant de tenir compte du plus petit capillaire), mais aussi des images couvrant une surface du cortex suffisamment large pour être statistiquement significative. Comme elle ne peut être acquise en une seule fois, nous proposons de paver la surface à imager de plusieurs petites images et de créer ainsi une grande "mosaïque d'images". Chaque image est acquise grâce à un microscope confocal dont la résolution impose une grille anisotrope. Nous avons alors développé des outils de reconstruction spécifiques pour ce genre de mosaïques afin de générer des images à la fois très étendues et très précises. Or ces images sont trop volumineuses pour être chargées et traitées en une seule fois dans la mémoire d'un ordinateur standard. Nous avons donc développé des outils spécifiques de traitement d'image (filtrage, seuillage, outils de morphologie mathématique, de topologie discrète...) décomposés en traitements en sous-images. L'étude quantitative du réseau micro-vasculaire cérébral nécessite l'extraction des lignes centrales et une estimation des diamètres des vaisseaux. La géométrie discrète offre un cadre de travail rapide et puissant pour ce type de calculs. En effet, nous devons calculer une carte de distance en tout point de l'image. Afin d'avoir la meilleure précision possible tout en gardant un temps de traitement raisonnable, nous avons choisi une carte de distance du chanfrein. Une de nos contributions a été de proposer un calcul automatique des coefficients de chanfrein permettant de s'adapter à tout type d'anisotropie de grille. L'utilisation de telles cartes de distances permet de guider des algorithmes de squelettisation. De tels outils nécessitent la conservation d'une propriété globale, la topologie. Comme nous nous plaçons dans un cadre où l'on a accès qu'à des sous images, nous avons proposé un nouvel algorithme de squelettisation qui minimise le nombre d'accès à des sous-images afin de garantir un temps de calcul acceptable, tout en localisant correctement le squelette. Ces algorithmes ont été intégrés dans le logiciel ergonomique Amira et sont utilisés par les chercheurs de l'unité U455 de l'INSERM.
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Clemente, Carmine. "Advanced high resolution methods for radar imaging and micro-Doppler signature extraction." Thesis, University of Strathclyde, 2013. http://oleg.lib.strath.ac.uk:80/R/?func=dbin-jump-full&object_id=18909.

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This Thesis presents radar concepts and signal processing techniques including the fractional Fourier transform (FrFT), Chebyshev polynomial approximation and Singular Spectrum Analysis (SSA) for advanced high resolution radar imaging and micro-Doppler signature extraction. Two novel SAR focussing algorithms in the time-frequency domain are developed using the FrFT. These are called the Fractional Range Doppler Algorithm (FrRDA) and the enhanced Fractional Chirp Scaling Algorithm (eFrCSA. The new methods are tested on simulated and real data sets and are shown to provide higher performances in terms of image quality and resolution than existing frequency domain based methods. The state of the art signal spectrum models of a bistatic point target spectrum for bistatic SAR imaging has been improved by deriving Chebyshev polynomial approximations in place of the conventional Taylor based approximations. This new model increases the accuracy and the efficiency of frequency domain focussing algorithms. Models for micro-Doppler signatures in bistatic SAR are developed and the effect of the different acquisition geometries are considered, including the effect on the final image. A new concept for a Passive Bistatic Radar is introduced for micro-Doppler analysis of helicopters rotor blades. The proposed system exploits the forward scattering enhancement to increase the radar cross section of the helicopters rotor blade allowing an acceptable operative range. The analysis shows how the proposed system could be considered as a good candidate for cheap coast and border control. A detailed analysis on the effect of micro-Doppler from wind turbines and their impact on SAR images is presented. The signal model for such a distributed target is presented and simulation results show how the presence of such a target can significantly decrease and corrupt the image quality. Singular Spectrum Analysis (SSA) is developed for micro-Doppler signature extra ction from SAR clutter and from the direct signal interference and clutter of a passive bistatic radar. The SSA is shown to be robust and capable of performing as a useful tool with the capability of mitigating the effects of clutter on micro-Doppler signatures.
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Lang, Susann-Cathrin. "Bioavailability of HOCs in marine sediments : application of solid phase micro-extraction." Thesis, University of the West of Scotland, 2015. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.731775.

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Letellier, Muriel. "Extraction assistée par micro-ondes de contaminants organiques dans les matrices environnementales." Bordeaux 1, 1998. http://www.theses.fr/1998BOR10623.

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Les contaminants organiques font l'objet de determination de leurs teneurs dans les differents compartiments de l'environnement depuis de nombreuses annees. Celle ci passe par la mise en oeuvre d'un protocole analytique souvent long et consommateur de solvant comprenant une etape d'extraction, une etape de purification et l'etape d'analyse. Alors que les methodes d'analyse ont fortement evolue ces dernieres annees, l'etape d'extraction, bien que determinante, n'a pas beaucoup change et utilise le plus souvent l'extraction soxhlet qui necessite plusieurs centaines de millilitres de solvant souvent toxique et nuisible pour l'environnement (comme les solvants chlores) et dure de 8 a 48 heures. Les potentialites d'une nouvelle methode d'extraction assistee par micro-ondes focalisees a pression atmospherique (soxwave, prolabo, france) ont ete testees tant du point de vue de l'efficacite, de la reproductibilite que de la facilite de mise en oeuvre pour l'analyse de contaminants organiques dans les matrices environnementales. Cette technique a ete validee pour l'analyse des hydrocarbures aromatiques polycycliques, des polychlorobiphenyles, des alcanes et des pesticides organochlores et organoazotes dans des matrices naturelles et certifiees (sols, boues, sediments, particules atmospheriques, roches meres). L'influence de differents parametres sur l'efficacite d'extraction a ete etudiee. Les etudes ont montre que cette technique permet un gain de temps et de solvant important. L'extraction est realisee en 10 minutes et avec 30 ml de solvant. La methode est facile a mettre en oeuvre. Elle permet d'obtenir des rendements d'extraction superieurs a 80% pour la majorite des composes et des matrices etudies par rapport a l'extraction soxhlet. Cette nouvelle methode est donc une bonne alternative a l'extraction classique par soxhlet.
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Chavali, Gautam Krishna, Sai Kumar N. V. Bhavaraju, Tushal Adusumilli, and VenuGopal Puripanda. "Micro-Expression Extraction For Lie Detection Using Eulerian Video (Motion and Color) Magnication." Thesis, Blekinge Tekniska Högskola, Institutionen för tillämpad signalbehandling, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-3467.

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Lie-detection has been an evergreen and evolving subject. Polygraph techniques have been the most popular and successful technique till date. The main drawback of the polygraph is that good results cannot be attained without maintaining a physical contact, of the subject under test. In general, this physical contact would induce extra consciousness in the subject. Also, any sort of arousal in the subject triggers false positives while performing the traditional polygraph based tests. With all these drawbacks in the polygraph, also, due to rapid developments in the fields of computer vision and artificial intelligence, with newer and faster algorithms, have compelled mankind to search and adapt to contemporary methods in lie-detection. Observing the facial expressions of emotions in a person without any physical contact and implementing these techniques using artificial intelligence is one such method. The concept of magnifying a micro expression and trying to decipher them is rather premature at this stage but would evolve in future. Magnification using EVM technique has been proposed recently and it is rather new to extract these micro expressions from magnified EVM based on HOG features. Till date, HOG features have been used in conjunction with SVM, and generally for person/pedestrian detection. A newer, simpler and contemporary method of applying EVM with HOG features and Back-propagation Neural Network jointly has been introduced and proposed to extract and decipher the micro-expressions on the face. Micro-expressions go unnoticed due to its involuntary nature, but EVM is used to magnify them and makes them noticeable. Emotions behind the micro-expressions are extracted and recognized using the HOG features \& Back-Propagation Neural Network. One of the important aspects that has to be dealt with human beings is a biased mind. Since, an investigator is also a human and, he too, has to deal with his own assumptions and emotions, a Neural Network is used to give the investigator an unbiased start in identifying the true emotions behind every micro-expression. On the whole, this proposed system is not a lie-detector, but helps in detecting the emotions of the subject under test. By further investigation, a lie can be detected.
This thesis uses a magnification technique to magnify the subtle, faint and spontaneous facial muscle movements or more precisely, micro-expressions. This magnification would help a system in classifying them and estimating the emotion behind them. This technique additionally magnifies the color changes, which could be used to extract the pulse without a physical contact with the subject. The results are presented in a GUI.
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Books on the topic "Micro-extraction"

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1960-, Albrecht Iris Dinah, ed. Determination of organochlorine compounds in water using micro-scale extraction: Report. [Toronto]: Ontario Ministry of Environment and Energy, 1996.

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Ontario. Ministry of Environment and Energy. Ontario Geoligcal Survey. Determination of oganochlorine compounds in water using micro-scale extraction / prepared by Iris D. Albrecht. Toronto: The Ministry, 1996.

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Book chapters on the topic "Micro-extraction"

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Vidal, C., and W. R. Külpmann. "Solid-phase Micro-Extraction." In Lexikon der Medizinischen Laboratoriumsdiagnostik, 1. Berlin, Heidelberg: Springer Berlin Heidelberg, 2018. http://dx.doi.org/10.1007/978-3-662-49054-9_2843-1.

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Vidal, C., and W. R. Külpmann. "Solid-phase Micro-Extraction." In Springer Reference Medizin, 2180. Berlin, Heidelberg: Springer Berlin Heidelberg, 2019. http://dx.doi.org/10.1007/978-3-662-48986-4_2843.

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Stember, Doron Sol, and Peter Schlegel. "Micro-testicular Sperm Extraction." In Male Infertility, 411–21. New York, NY: Springer New York, 2012. http://dx.doi.org/10.1007/978-1-4614-3335-4_39.

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Stember, Doron Sol, and Peter Schlegel. "Micro-testicular Sperm Extraction (MicroTESE)." In Male Infertility for the Clinician, 313–32. New York, NY: Springer New York, 2013. http://dx.doi.org/10.1007/978-1-4614-7852-2_19.

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Yang, Qiong, Dian Gong, and Xiaoou Tang. "Modeling Micro-patterns for Feature Extraction." In Lecture Notes in Computer Science, 2–16. Berlin, Heidelberg: Springer Berlin Heidelberg, 2005. http://dx.doi.org/10.1007/11564386_2.

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Shaw, J., R. Nudd, B. Naik, C. Turner, D. Rudge, M. Benson, and A. Garman. "Liquid/Liquid Extraction Systems Using Micro-Contactor Arrays." In Micro Total Analysis Systems 2000, 371–74. Dordrecht: Springer Netherlands, 2000. http://dx.doi.org/10.1007/978-94-017-2264-3_86.

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Kader, Mohammad Salauddin, and Md Ramim Tanver Rahman. "Supercritical Fluid Extraction (SFE), Solid-Phase Micro Extraction (SPME), and Stir Bar Sorption Extraction (SBSE) Techniques." In Techniques to Measure Food Safety and Quality, 219–27. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-68636-9_10.

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Takalkar, Madhumita A., Haimin Zhang, and Min Xu. "Improving Micro-expression Recognition Accuracy Using Twofold Feature Extraction." In MultiMedia Modeling, 652–64. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-030-05710-7_54.

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Cai, Jun, Hao Tian, Huijie Li, Donghao Li, and Xiangfan Piao. "Research of Gas Purge Syringe Needle Micro Extraction System." In Advances in Intelligent Systems and Computing, 195–200. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-38771-0_19.

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Seidi, Shahram, and Maryam Rezazadeh. "Applications of Micro Solid-Phase Extraction in Analytical Toxicology." In Microextraction Techniques in Analytical Toxicology, 23–60. Boca Raton: CRC Press, 2021. http://dx.doi.org/10.1201/9781003128298-3.

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Conference papers on the topic "Micro-extraction"

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Fogle, Orelle R., and Brian D. Rigling. "Micro-range/micro-Doppler feature extraction and association." In 2011 IEEE Radar Conference (RadarCon). IEEE, 2011. http://dx.doi.org/10.1109/radar.2011.5960521.

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Li, Feng, Jun Cao, Lixiang Ren, and Teng Long. "Micro-Doppler extraction from ISAR image." In 2016 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP). IEEE, 2016. http://dx.doi.org/10.1109/icassp.2016.7472248.

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Zhixing Huang, Shaohua Liu, and Wei Zhang. "Micro-Motions signatures analysis and extraction." In 2013 International Workshop on Microwave and Millimeter Wave Circuits and System Technology (MMWCST). IEEE, 2013. http://dx.doi.org/10.1109/mmwcst.2013.6814654.

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Guo, Rujiang, and Yinghong Ni. "Micro-Doppler signature extraction from high speed targets with micro-motions." In 2014 IEEE Radar Conference (RadarCon). IEEE, 2014. http://dx.doi.org/10.1109/radar.2014.6875623.

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Kocjancic, Leon, Alessio Balleri, and Thomas Merlet. "Micro-Doppler Signature Extraction with Multibeam Radar." In 2019 International Radar Conference (RADAR). IEEE, 2019. http://dx.doi.org/10.1109/radar41533.2019.171364.

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Zhang, Pan, Wenke Xie, Jianping Ou, Jun Zhang, Kai Liu, and Guofan Wang. "Research on Human Micro-motion Feature Extraction Technology." In 2019 IEEE 3rd Advanced Information Management, Communicates, Electronic and Automation Control Conference (IMCEC). IEEE, 2019. http://dx.doi.org/10.1109/imcec46724.2019.8983848.

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Hu, Xuchao, Xiansi Tan, Zhiguo Qu, and Qingguang Xu. "Wind Turbine Clutter Micro-motion Feature Extraction Method." In 2019 IEEE 2nd International Conference on Information Communication and Signal Processing (ICICSP). IEEE, 2019. http://dx.doi.org/10.1109/icicsp48821.2019.8958604.

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Militello, Carmelo, Vincenzo Conti, Salvatore Vitabile, and Filippo Sorbello. "An Embedded Module for Iris Micro-Characteristics Extraction." In 2009 International Conference on Complex, Intelligent and Software Intensive Systems (CISIS). IEEE, 2009. http://dx.doi.org/10.1109/cisis.2009.117.

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Sun, Hui-xia, and Zheng Liu. "Micro-doppler feature extraction for ballistic missile warhead." In 2008 International Conference on Information and Automation (ICIA). IEEE, 2008. http://dx.doi.org/10.1109/icinfa.2008.4608208.

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Meng, Wei, and Kong Ling-jiang. "Feature extraction method for micro-Doppler using LFM." In 2009 2nd Asian-Pacific Conference on Synthetic Aperture Radar (APSAR). IEEE, 2009. http://dx.doi.org/10.1109/apsar.2009.5374175.

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Reports on the topic "Micro-extraction"

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Glenn J. W. MODELING OF MICRO-BUNCHING DURING AGS SLOW EXTRACTION. Office of Scientific and Technical Information (OSTI), February 1996. http://dx.doi.org/10.2172/1151333.

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Daisey, J. M., L. A. Gundel, and L. Wang. A semi-micro Soxhlet extraction method for the determination of extractable particulate organic matter and selected polycyclic aromatic hydrocarbons. Office of Scientific and Technical Information (OSTI), February 1989. http://dx.doi.org/10.2172/6164088.

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Blundell, S. Micro-terrain and canopy feature extraction by breakline and differencing analysis of gridded elevation models : identifying terrain model discontinuities with application to off-road mobility modeling. Engineer Research and Development Center (U.S.), April 2021. http://dx.doi.org/10.21079/11681/40185.

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Elevation models derived from high-resolution airborne lidar scanners provide an added dimension for identification and extraction of micro-terrain features characterized by topographic discontinuities or breaklines. Gridded digital surface models created from first-return lidar pulses are often combined with lidar-derived bare-earth models to extract vegetation features by model differencing. However, vegetative canopy can also be extracted from the digital surface model alone through breakline analysis by taking advantage of the fine-scale changes in slope that are detectable in high-resolution elevation models of canopy. The identification and mapping of canopy cover and micro-terrain features in areas of sparse vegetation is demonstrated with an elevation model for a region of western Montana, using algorithms for breaklines, elevation differencing, slope, terrain ruggedness, and breakline gradient direction. These algorithms were created at the U.S. Army Engineer Research Center – Geospatial Research Laboratory (ERDC-GRL) and can be accessed through an in-house tool constructed in the ENVI/IDL environment. After breakline processing, products from these algorithms are brought into a Geographic Information System as analytical layers and applied to a mobility routing model, demonstrating the effect of breaklines as obstacles in the calculation of optimal, off-road routes. Elevation model breakline analysis can serve as significant added value to micro-terrain feature and canopy mapping, obstacle identification, and route planning.
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Shenker, Moshe, Paul R. Bloom, Abraham Shaviv, Adina Paytan, Barbara J. Cade-Menun, Yona Chen, and Jorge Tarchitzky. Fate of Phosphorus Originated from Treated Wastewater and Biosolids in Soils: Speciation, Transport, and Accumulation. United States Department of Agriculture, June 2011. http://dx.doi.org/10.32747/2011.7697103.bard.

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Beneficial use of reclaimed wastewater (RW) and biosolids (BS) in soils is accompanied by large input of sewage-originated P. Prolonged application may result in P accumulation up to levelsBeneficial use of reclaimed wastewater (RW) and biosolids (BS) in soils is accompanied by large input of sewage-originated P. Prolonged application may result in P accumulation up to levels that impair plant nutrition, increase P loss, and promote eutrophication in downstream waters. This study aims to shed light on the RW- and BS-P forms in soils and to follow the processes that determine P reactivity, solubility, availability, and loss in RW and BS treated soils. The Technion group used sequential P extraction combined with measuring stable oxygen isotopic composition in phosphate (δ18OP) and with 31P-NMR studies to probe P speciation and transformations in soils irrigated with RW or fresh water (FW). The application of the δ18OP method to probe inorganic P (Pi) speciation and transformations in soils was developed through collaboration between the Technion and the UCSC groups. The method was used to trace Pi in water-, NaHCO3-, NaOH-, and HCl- P fractions in a calcareous clay soil (Acre, Israel) irrigated with RW or FW. The δ18OP signature changes during a month of incubation indicated biogeochemical processes. The water soluble Pi (WSPi) was affected by enzymatic activity yielding isotopic equilibrium with the water molecules in the soil solution. Further it interacted rapidly with the NaHCO3-Pi. The more stable Pi pools also exhibited isotopic alterations in the first two weeks after P application, likely related to microbial activity. Isotopic depletion which could result from organic P (PO) mineralization was followed by enrichment which may result from biologic discrimination in the uptake. Similar transformations were observed in both soils although transformations related to biological activity were more pronounced in the soil treated with RW. Specific P compounds were identified by the Technion group, using solution-state 31P-NMR in wastewater and in soil P extracts from Acre soils irrigated by RW and FW. Few identified PO compounds (e.g., D-glucose-6-phosphate) indicated coupled transformations of P and C in the wastewater. The RW soil retained higher P content, mainly in the labile fractions, but lower labile PO, than the FW soil; this and the fact that P species in the various soil extracts of the RW soil appear independent of P species in the RW are attributed to enhanced biological activity and P recycling in the RW soil. Consistent with that, both soils retained very similar P species in the soil pools. The HUJ group tested P stabilization to maximize the environmental safe application rates and the agronomic beneficial use of BS. Sequential P extraction indicated that the most reactive BS-P forms: WSP, membrane-P, and NaHCO3-P, were effectively stabilized by ferrous sulfate (FeSul), calcium oxide (CaO), or aluminum sulfate (alum). After applying the stabilized BS, or fresh BS (FBS), FBS compost (BSC), or P fertilizer (KH2PO4) to an alluvial soil, P availability was probed during 100 days of incubation. A plant-based bioassay indicated that P availability followed the order KH2PO4 >> alum-BS > BSC ≥ FBS > CaO-BS >> FeSul-BS. The WSPi concentration in soil increased following FBS or BSC application, and P mineralization further increased it during incubation. In contrast, the chemically stabilized BS reduced WSPi concentrations relative to the untreated soil. It was concluded that the chemically stabilized BS effectively controlled WSPi in the soil while still supplying P to support plant growth. Using the sequential extraction procedure the persistence of P availability in BS treated soils was shown to be of a long-term nature. 15 years after the last BS application to MN soils that were annually amended for 20 years by heavy rates of BS, about 25% of the added BS-P was found in the labile fractions. The UMN group further probed soil-P speciation in these soils by bulk and micro X-ray absorption near edge structure (XANES). This newly developed method was shown to be a powerful tool for P speciation in soils. In a control soil (no BS added), 54% of the total P was PO and it was mostly identified as phytic acid; 15% was identified as brushite and 26% as strengite. A corn crop BS amended soil included mostly P-Fe-peat complex, variscite and Al-P-peat complex but no Ca-P while in a BS-grass soil octacalcium phosphate was identified and o-phosphorylethanolamine or phytic acid was shown to dominate the PO fraction that impair plant nutrition, increase P loss, and promote eutrophication in downstream waters. This study aims to shed light on the RW- and BS-P forms in soils and to follow the processes that determine P reactivity, solubility, availability, and loss in RW and BS treated soils. The Technion group used sequential P extraction combined with measuring stable oxygen isotopic composition in phosphate (δ18OP) and with 31P-NMR studies to probe P speciation and transformations in soils irrigated with RW or fresh water (FW). The application of the δ18OP method to probe inorganic P (Pi) speciation and transformations in soils was developed through collaboration between the Technion and the UCSC groups. The method was used to trace Pi in water-, NaHCO3-, NaOH-, and HCl- P fractions in a calcareous clay soil (Acre, Israel) irrigated with RW or FW. The δ18OP signature changes during a month of incubation indicated biogeochemical processes. The water soluble Pi (WSPi) was affected by enzymatic activity yielding isotopic equilibrium with the water molecules in the soil solution. Further it interacted rapidly with the NaHCO3-Pi. The more stable Pi pools also exhibited isotopic alterations in the first two weeks after P application, likely related to microbial activity. Isotopic depletion which could result from organic P (PO) mineralization was followed by enrichment which may result from biologic discrimination in the uptake. Similar transformations were observed in both soils although transformations related to biological activity were more pronounced in the soil treated with RW. Specific P compounds were identified by the Technion group, using solution-state 31P-NMR in wastewater and in soil P extracts from Acre soils irrigated by RW and FW. Few identified PO compounds (e.g., D-glucose-6-phosphate) indicated coupled transformations of P and C in the wastewater. The RW soil retained higher P content, mainly in the labile fractions, but lower labile PO, than the FW soil; this and the fact that P species in the various soil extracts of the RW soil appear independent of P species in the RW are attributed to enhanced biological activity and P recycling in the RW soil. Consistent with that, both soils retained very similar P species in the soil pools. The HUJ group tested P stabilization to maximize the environmental safe application rates and the agronomic beneficial use of BS. Sequential P extraction indicated that the most reactive BS-P forms: WSP, membrane-P, and NaHCO3-P, were effectively stabilized by ferrous sulfate (FeSul), calcium oxide (CaO), or aluminum sulfate (alum). After applying the stabilized BS, or fresh BS (FBS), FBS compost (BSC), or P fertilizer (KH2PO4) to an alluvial soil, P availability was probed during 100 days of incubation. A plant-based bioassay indicated that P availability followed the order KH2PO4 >> alum-BS > BSC ≥ FBS > CaO-BS >> FeSul-BS. The WSPi concentration in soil increased following FBS or BSC application, and P mineralization further increased it during incubation. In contrast, the chemically stabilized BS reduced WSPi concentrations relative to the untreated soil. It was concluded that the chemically stabilized BS effectively controlled WSPi in the soil while still supplying P to support plant growth. Using the sequential extraction procedure the persistence of P availability in BS treated soils was shown to be of a long-term nature. 15 years after the last BS application to MN soils that were annually amended for 20 years by heavy rates of BS, about 25% of the added BS-P was found in the labile fractions. The UMN group further probed soil-P speciation in these soils by bulk and micro X-ray absorption near edge structure (XANES). This newly developed method was shown to be a powerful tool for P speciation in soils. In a control soil (no BS added), 54% of the total P was PO and it was mostly identified as phytic acid; 15% was identified as brushite and 26% as strengite. A corn crop BS amended soil included mostly P-Fe-peat complex, variscite and Al-P-peat complex but no Ca-P while in a BS-grass soil octacalcium phosphate was identified and o-phosphorylethanolamine or phytic acid was shown to dominate the PO fraction.
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Li, Howell, Enrique Saldivar-Carranza, Jijo K. Mathew, Woosung Kim, Jairaj Desai, Timothy Wells, and Darcy M. Bullock. Extraction of Vehicle CAN Bus Data for Roadway Condition Monitoring. Purdue University, 2020. http://dx.doi.org/10.5703/1288284317212.

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Obtaining timely information across the state roadway network is important for monitoring the condition of the roads and operating characteristics of traffic. One of the most significant challenges in winter roadway maintenance is identifying emerging or deteriorating conditions before significant crashes occur. For instance, almost all modern vehicles have accelerometers, anti-lock brake (ABS) and traction control systems. This data can be read from the Controller Area Network (CAN) of the vehicle, and combined with GPS coordinates and cellular connectivity, can provide valuable on-the-ground sampling of vehicle dynamics at the onset of a storm. We are rapidly entering an era where this vehicle data can provide an agency with opportunities to more effectively manage their systems than traditional procedures that rely on fixed infrastructure sensors and telephone reports. This data could also reduce the density of roadway weather information systems (RWIS), similar to how probe vehicle data has reduced the need for micro loop or side fire sensors for collecting traffic speeds.
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Naim, Michael, Gary R. Takeoka, Haim D. Rabinowitch, and Ron G. Buttery. Identification of Impact Aroma Compounds in Tomato: Implications to New Hybrids with Improved Acceptance through Sensory, Chemical, Breeding and Agrotechnical Techniques. United States Department of Agriculture, October 2002. http://dx.doi.org/10.32747/2002.7585204.bard.

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The tomato, a profitable vegetable crop in both the USA and Israel, has benefited significantly from intensive breeding efforts in both countries, and elsewhere (esp. Holland). : Modem hybrids are highly prolific and resistant to a variety of major pests. They produce attractive, firm fruit for both processing and fresh-marketing. In all cases, however, reduction in flavor and aroma have occurred concomitantly with the increase in yield. Sugars-acids ratio dominate fruit taste, whereas aroma volatiles (potent at minute ppb and ppt levels) contribute to the total characteristic tomato flavor. An increase in sugars (1-2%) contributes significantly to tomato fruit taste. However, because of energy reasons, an increase in fruit sugars is immediately compensated for by a decrease in yield. Our main objectives were to: (a) pinpoint and identify the major impact aroma components of fresh tomato; (b) study the genetic and environmental effects on fruit aroma; (c) determine precursors of appealing (flavors) and repelling (off-flavors) aroma compounds in tomato. Addition of saturated salts blocked all enzymatic activities prior to isolation of volatiles by dynamic and static headspace, using solvent assisted flavor evaporation (SAFE) and solid phase micro-extraction (SPME) from highly favored (FA-612 and FA-624) and less preferred (R 144 and R 175) tomato genotypes. Impact aroma components were determined by gas chromatography-olfactometry (GC-O), gas chromatography-mass spectrometry (GC- MS) and aroma extract dilution analysis (AEDA). The potent odorant (Z)-1,5-octadien-3-one, was identified for the first time in fresh tomato. From the ca. 400 volatile compounds in the headspace of fresh tomato, the following compounds are proposed to be impact aroma compounds: (Z)-3-hexenal, hexanal, 1-penten-3-one, 2-phenylethanol, (E)-2-hexenal, phenyl acetaldehyde, b-ionone, b-damascenone, 4-hydroxy-2,5-dimethyl-3-(2H)-furanone (FuraneolR), (Z)-l,5-octadien-3-one, methional, 1-octen-3-one, guaiacol, (E,E)- and (E,Z)- 2,4-decadienal and trans- and cis-4,5-EPOXY -(E)-2-decenal. This confirms the initial hypothesis that only a small number of volatiles actually contribute to the sensation of fruit aroma. Tomato matrix significantly affected the volatility of certain impact aroma components and thus led to the conclusion that direct analysis of molecules in the headspace . may best represent access of tomato volatiles to the olfactory receptors. Significant differences in certain odorants were found between preferred and less-preferred cultivars. Higher consumer preference was correlated with higher concentrations of the following odorants: l-penten-3-one, (Z)-3-hexenal, (E,E)- and (E,Z)-2,4-decadienal and especially Furaneol, whereas lower consumer preference was associated with higher concentrations of methional, 3-methylbutyric acid, phenylacetaldehyde, 2-phenylethanol, and 2-isobutylthiazole. Among environmental factors (salinity, N source, growth temperature), temperature had significant effects on the content of selected aroma compounds (e.g., 3-methylbutanal, 1- penten-3-one, hexanal, (Z)-3-hexenal, (E)-2-hexenal, 2-isobutylthiazole, 6-methyl-5-hepten- 2-one, 1-octen-3-one, methional, 2-phenylethanal, phenyl acetaldehyde, and eugenol) in fresh tomatoes. Salt stress (20 mM NaCl) increased the content of odorants such as (Z)-3-hexenal, 2-phenylethanol and 3-methylbutanal in the R-144 cultivar whereas salinity had minor effects on 1-pentene-3-one, 2-isobutylthiazole and b-ionone. This fundamental knowledge obtained by comprehensive investigation, using modem chemical, sensory and agrotechnical methodology will assist future attempts to genetically modify the concentrations of key odorants in fresh tomatoes, and thus keep the tomato production of Israel and the USA competitive on the world market.
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Shani, Uri, Lynn Dudley, Alon Ben-Gal, Menachem Moshelion, and Yajun Wu. Root Conductance, Root-soil Interface Water Potential, Water and Ion Channel Function, and Tissue Expression Profile as Affected by Environmental Conditions. United States Department of Agriculture, October 2007. http://dx.doi.org/10.32747/2007.7592119.bard.

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Constraints on water resources and the environment necessitate more efficient use of water. The key to efficient management is an understanding of the physical and physiological processes occurring in the soil-root hydraulic continuum.While both soil and plant leaf water potentials are well understood, modeled and measured, the root-soil interface where actual uptake processes occur has not been sufficiently studied. The water potential at the root-soil interface (yᵣₒₒₜ), determined by environmental conditions and by soil and plant hydraulic properties, serves as a boundary value in soil and plant uptake equations. In this work, we propose to 1) refine and implement a method for measuring yᵣₒₒₜ; 2) measure yᵣₒₒₜ, water uptake and root hydraulic conductivity for wild type tomato and Arabidopsis under varied q, K⁺, Na⁺ and Cl⁻ levels in the root zone; 3) verify the role of MIPs and ion channels response to q, K⁺ and Na⁺ levels in Arabidopsis and tomato; 4) study the relationships between yᵣₒₒₜ and root hydraulic conductivity for various crops representing important botanical and agricultural species, under conditions of varying soil types, water contents and salinity; and 5) integrate the above to water uptake term(s) to be implemented in models. We have made significant progress toward establishing the efficacy of the emittensiometer and on the molecular biology studies. We have added an additional method for measuring ψᵣₒₒₜ. High-frequency water application through the water source while the plant emerges and becomes established encourages roots to develop towards and into the water source itself. The yᵣₒₒₜ and yₛₒᵢₗ values reflected wetting and drying processes in the rhizosphere and in the bulk soil. Thus, yᵣₒₒₜ can be manipulated by changing irrigation level and frequency. An important and surprising finding resulting from the current research is the obtained yᵣₒₒₜ value. The yᵣₒₒₜ measured using the three different methods: emittensiometer, micro-tensiometer and MRI imaging in both sunflower, tomato and corn plants fell in the same range and were higher by one to three orders of magnitude from the values of -600 to -15,000 cm suggested in the literature. We have added additional information on the regulation of aquaporins and transporters at the transcript and protein levels, particularly under stress. Our preliminary results show that overexpression of one aquaporin gene in tomato dramatically increases its transpiration level (unpublished results). Based on this information, we started screening mutants for other aquaporin genes. During the feasibility testing year, we identified homozygous mutants for eight aquaporin genes, including six mutants for five of the PIP2 genes. Including the homozygous mutants directly available at the ABRC seed stock center, we now have mutants for 11 of the 19 aquaporin genes of interest. Currently, we are screening mutants for other aquaporin genes and ion transporter genes. Understanding plant water uptake under stress is essential for the further advancement of molecular plant stress tolerance work as well as for efficient use of water in agriculture. Virtually all of Israel’s agriculture and about 40% of US agriculture is made possible by irrigation. Both countries face increasing risk of water shortages as urban requirements grow. Both countries will have to find methods of protecting the soil resource while conserving water resources—goals that appear to be in direct conflict. The climate-plant-soil-water system is nonlinear with many feedback mechanisms. Conceptual plant uptake and growth models and mechanism-based computer-simulation models will be valuable tools in developing irrigation regimes and methods that maximize the efficiency of agricultural water. This proposal will contribute to the development of these models by providing critical information on water extraction by the plant that will result in improved predictions of both water requirements and crop yields. Plant water use and plant response to environmental conditions cannot possibly be understood by using the tools and language of a single scientific discipline. This proposal links the disciplines of soil physics and soil physical chemistry with plant physiology and molecular biology in order to correctly treat and understand the soil-plant interface in terms of integrated comprehension. Results from the project will contribute to a mechanistic understanding of the SPAC and will inspire continued multidisciplinary research.
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