Thematische Bibliographien / Physicochemical Approach

Inhaltsverzeichnis

  1. Zeitschriftenartikel
  2. Dissertationen
  3. Bücher
  4. Buchteile
  5. Konferenzberichte
  6. Berichte der Organisationen

Auswahl der wissenschaftlichen Literatur zum Thema „Physicochemical Approach“

Autor: Grafiati
Veröffentlicht am 18. Mai 2024

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Zeitschriftenartikel zum Thema "Physicochemical Approach"

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HAMAGUCHI, Hiroo. „Physicochemical Approach to Life“. TRENDS IN THE SCIENCES 14, Nr. 3 (2009): 22–24. http://dx.doi.org/10.5363/tits.14.3_22.

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Defoort, Françoise, Matthieu Campargue, Gilles Ratel, Hélène Miller und Capucine Dupont. „Physicochemical Approach To Blend Biomass“. Energy & Fuels 33, Nr. 7 (07.03.2019): 5820–28. http://dx.doi.org/10.1021/acs.energyfuels.8b04169.

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van Loosdrecht, Mark C. M., Johannes Lyklema, Willem Norde und Alexander J. B. Zehnder. „Bacterial adhesion: A physicochemical approach“. Microbial Ecology 17, Nr. 1 (Januar 1989): 1–15. http://dx.doi.org/10.1007/bf02025589.

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Ohgaki, Kazunari, Nguyen Quoc Khanh, Yasuhiro Joden, Atsushi Tsuji und Takaharu Nakagawa. „Physicochemical approach to nanobubble solutions“. Chemical Engineering Science 65, Nr. 3 (Februar 2010): 1296–300. http://dx.doi.org/10.1016/j.ces.2009.10.003.

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Greenbaum, Jonathan, und Mahesh Nirmalan. „Acid–base balance: Stewart's physicochemical approach“. Current Anaesthesia & Critical Care 16, Nr. 3 (Juni 2005): 133–35. http://dx.doi.org/10.1016/j.cacc.2005.03.010.

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Iritani, Eiji, und Yasuhito Mukai. „Approach from physicochemical aspects in membrane filtration“. Korean Journal of Chemical Engineering 14, Nr. 5 (September 1997): 347–53. http://dx.doi.org/10.1007/bf02707050.

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Lutfiyah, Dhea Sultana, Lili Fitriani, Muhammad Taher und Erizal Zaini. „Crystal Engineering Approach in Physicochemical Properties Modifications of Phytochemical“. Science and Technology Indonesia 7, Nr. 3 (28.07.2022): 353–71. http://dx.doi.org/10.26554/sti.2022.7.3.353-371.

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Phytochemicals have been used to reduce the risk of diseases and maintain good health and well-being. However, most phytochemicals have a limitation in their physicochemical properties, which can be modified by reforming the shape of the crystals. Therefore, crystal engineering is a promising approach to optimize physicochemical characteristics of the active pharmaceutical ingredients (APIs) in a phytochemical without altering its pharmacological efficacy. Hence, this paper reviews current strategies for the use of crystal engineering to optimize physicochemical properties of phytochemicals, which is followed by the design of the synthesis and characterization of particular phytochemicals, including piperine (PIP), quercetin (QUE), curcumin (CUR), genistein (GEN), and myricetin (MYR). The literature indicates that crystal engineering of multicomponent crystals (MCCs) enhances phytochemical physicochemical properties, including solubility, dissolution rate, stability, and permeability. The MCCs provide a lower lattice energy and noncovalent bonding, which translate into lower melting points and weak intermolecular interactions that generate greater solubility, higher dissolution rate, and better stability of the APIs. Nevertheless, the absence of reported studies of phytochemical crystal engineering leads to a lack of variation in the selection of coformers, methods of preparation, and improvement of physicochemical properties. Therefore, more extensive evaluation of the design and physicochemical characteristics of phytochemicals using MCCs is necessary and manifests the opportunity to enhance the application of phytochemicals in the pharmaceutical industry.
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Kocherginsky, Nikolai, und Martin Gruebele. „Mechanical approach to chemical transport“. Proceedings of the National Academy of Sciences 113, Nr. 40 (19.09.2016): 11116–21. http://dx.doi.org/10.1073/pnas.1600866113.

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Nonequilibrium thermodynamics describes the rates of transport phenomena with the aid of various thermodynamic forces, but often the phenomenological transport coefficients are not known, and the description is not easily connected with equilibrium relations. We present a simple and intuitive model to address these issues. Our model is based on Lagrangian dynamics for chemical systems with dissipation, so one may think of the model as physicochemical mechanics. Using one main equation, the model allows a systematic derivation of all transport and equilibrium equations, subject to the limitation that heat generated or absorbed in the system must be small for the model to be valid. A table with all major examples of transport and equilibrium processes described using physicochemical mechanics is given. In equilibrium, physicochemical mechanics reduces to standard thermodynamics and the Gibbs–Duhem relation, and we show that the First and Second Laws of thermodynamics are satisfied for our system plus bath model. Out of equilibrium, our model provides relationships between transport coefficients and describes system evolution in the presence of several simultaneous external fields. The model also leads to an extension of the Onsager–Casimir reciprocal relations for properties simultaneously transported by many components.
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Diaztagle-Fernández, José Diaztagle, Ingrid Juliana Moreno-Ladino, Jorge Alfredo Morcillo-Muñoz, Andrés Felipe Morcillo-Muñoz, Luis Alejandro Marcelo-Pinilla und Luis Eduardo Cruz-Martínez. „Comparative analysis of acid-base balance in patients with severe sepsis and septic shock: traditional approach vs. physicochemical approach“. Revista de la Facultad de Medicina 67, Nr. 4 (01.10.2019): 441–46. http://dx.doi.org/10.15446/revfacmed.v67n4.65448.

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Introduction: The evaluation of metabolism and the diagnostic classification of acid-base disorders has generated great controversy. Acid-base balance (ABB) is approached by means of the physicochemical and Henderson’s models.Objective: To compare two diagnostic approaches to ABB in patients with severe sepsis.Materials and methods: Prospective, descriptive study conducted in patients with severe sepsis. ABB was analyzed within the first 24 hours. The diagnosis was compared according to each model and the causes of the disorders were compared according to the physicochemical model.Results: 38 patients were included in the study, of which 21 (55%) were women; the mean age was 49 years, the median APACHE II, 13.28, and the mortality at 28 days, 24.3%. The traditional approach identified 8 patients with normal ABB, 20 with metabolic acidosis, and 10 with other disorders. Based on the physicochemical model, all subjects had acidosis and metabolic alkalosis. Increased strong ion difference (SID) was the most frequently observed disorder.Conclusion: The physicochemical model was useful to diagnose more patients with acid-base disorders. According to these results, all cases presented with acidosis and metabolic alkalosis; the most frequent proposed mechanism of acidosis was elevated SID. The nature of these disorders and their clinical relevance is yet to be established.
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Rodríguez-García, J., A. Puig, A. Salvador und I. Hernando. „Funcionality of several cake ingredients: A comprehensive approach“. Czech Journal of Food Sciences 31, No. 4 (19.07.2013): 355–60. http://dx.doi.org/10.17221/412/2012-cjfs.

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The roles of some cake ingredients – oil, a leavening agent, and inulin – in the structure and physicochemical properties of batter and cakes were studied in four different formulations. Oil played an important role in the batter stability, due to its contribution to increasing batter viscosity and occluding air during mixing. The addition of the leavening agent was crucial to the final height and sponginess of the cakes. When inulin was used as a fat replacer, the absence of oil caused a decrease in the stability of the batter, where larger air bubbles were occluded. Inulin dispersed uniformly in the batter could create a competition for water with the flour components: gluten was not properly hydrated and some starch granules were not fully incorporated into the matrix. Thus, the development of a continuous network was disrupted and the cake was shorter and softer; it contained interconnected air cells in the crumb, and was easily crumbled. The structure studies were decisive to understand the physicochemical properties.  
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Dissertationen zum Thema "Physicochemical Approach"

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Chhetri, Esmita. „Synthesis, characterization and inclusion complexation of some isoxazolidine and isoxazoline derivatives for advanced applications explored by physicochemical approach“. Thesis, University of North Bengal, 2021. http://ir.nbu.ac.in/handle/123456789/4343.

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Ray, Tanusree. „Exploration of assortment of interfaces of some lonik liquids in solvent system by physicochemical approach“. Thesis, University of North Bengal, 2016. http://ir.nbu.ac.in/handle/123456789/2743.

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Mazaud, Agathe. „Aqueous plant extraction using glycerol and sugarbased hydrotropes : physicochemical approach and application to rosemary“. Electronic Thesis or Diss., Université de Lille (2018-2021), 2020. http://www.theses.fr/2020LILUR055.

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Les préoccupations grandissantes concernant la santé et l’environnement rendent la demande en ingrédients naturels toujours plus forte. Parallèlement, les fournisseurs d’ingrédients naturels tentent de rendre les procédés d’extraction plus performants, plus sûrs, moins consommateurs en énergie et en ressources non-renouvelables. Les hydrotropes, capables de solubiliser des composés hydrophobes dans l’eau, constituent une alternative prometteuse aux solvants organiques, souvent dérivés du pétrole, potentiellement explosifs et émetteurs de composés organiques volatiles. Afin de développer un nouveau procédé d’extraction hydrotropique efficace à base d’amphiphiles biosourcés, nous nous sommes intéressés à la compréhension des cinétiques et des phénomènes physico-chimiques impliqués dans l’extraction de l’acide carnosique (AC), un puissant antioxydant phénolique présent dans le romarin et la sauge officinale. L’extraction de l’AC par des hydrotropes modèles de type éthers de polyéthylène glycol a permis de démontrer l’efficacité et la compétitivité de l’extraction hydrotropique par rapport à une extraction conventionnelle utilisant un solvant. Des relations structure/propriétés physico-chimiques/efficacité ont été établies, puis généralisées aux hydrotropes biosourcés à base de glycérol (éthers de butyle, pentyle, et isopentyle) ou de sucres comme le xyloside d’amyle qui a été sélectionné par la suite pour son efficacité, sa biodégradabilité et sa disponibilité. L’optimisation des conditions d’extraction à l'aide de plans d'expériences a permis de doubler la quantité d’AC récupéré dans l’extrait sec. Pour finir, différentes techniques de précipitation de l’AC contenu dans des solutions hydrotropiques ont été comparées afin de faciliter sa récupération. Parmi elles, l’addition d’eau comme anti-solvant s’est révélée la plus efficace pour précipiter l’AC extrait du romarin. Sur la base de la composition et de l’aspect du précipité obtenu selon différentes conditions de précipitation, nous avons finalement pu établir un mécanisme visant à expliquer les différentes étapes de la précipitation hydrotropique
The growing concerns for health and environment makes the demand for natural ingredients ever higher. At the same time, natural ingredients manufacturers are trying to design effective, safer and less energy-costly extraction processes while avoiding the use of non-renewable resources. Hydrotropes are able to solubilize hydrophobic compounds in water, and constitute a promising alternative to organic solvents, which are often derived from petroleum, potentially explosives and producers of volatile organic compounds. To design a new effective hydrotropic extraction process using biobased amphiphiles, we investigated the physical chemical and kinetic phenomena governing the extraction of carnosic acid (CA), a powerful phenolic antioxidant that occurs in rosemary and sage. The CA extraction using alkyl polyethylene glycols ethers as model hydrotropes demonstrated the efficiency and the competitiveness of hydrotropic extractions compared to conventional solvent extractions. Quantitative Structure/properties relationship (QSPR) studies were established and generalized to biobased hydrotropes including butyl or pentyl glycerol ethers, and sugar-based hydrotropes such as amyl xyloside, which was further selected for its efficiency, biodegradability and commercial availability. The optimization of the extraction conditions led to double the CA recovered in the dry extract. Finally, different techniques have been investigated to precipitate CA from a hydrotropic solution. Among them, the addition of water as an anti-solvent appears as the more effective for precipitating CA from rosemary extract. Finally, the comparison of the precipitate composition and aspect obtained using various precipitation conditions led us to establish a mechanism explaining the different steps of the hydrotropic precipitation
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Moczko, Ewa. „New approach in multipurpose optical diagnostics : fluorescence based assay for simultaneous determination of physicochemical parameters“. Thesis, Cranfield University, 2009. http://dspace.lib.cranfield.ac.uk/handle/1826/4573.

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The development of sensors assays for comprehensive characterisation of biological samples and effective minimal-invasive diagnostics is highly prioritised. Last decade this research area has been actively developing due to possibility of simultaneous, real- time, in vivo detection and monitoring of diverse physicochemical parameters and analytes. The new approach which has been introduced in this thesis was to develop and examine an optical diagnostic assay consisting of a mixture of environmental-sensitive fluorescent dyes. The operating principle of the system has been inspired by electronic nose and tongue devices which combine nonspecific (or semispecific) sensing elements and chemometric techniques for multivariate data analysis. The performance of the optical assay was based on the analysis of the spectrum of selected dyes with discreet reading of their emission maxima. The variations in peaks intensities caused by environmental changes provided distinctive fluorescence patterns, which could be handled similar to the signals collected from nose/tongue devices. The analytical capability of the assay was engendered by changes in fluorescence signal of the dye mixture in response to changes in pH, temperature, ionic strength and the presence of oxygen. Further findings have also proved the ability of optical assay to estimate development phases and to discriminate between different strains of growing cell cultures as well as identify various gastrointestinal diseases in human. This novel fluorescence-based diagnostic tool offers a promising alternative to electrochemical systems providing high sensitive measurements with broad dynamic range, easy, inexpensive measurements and the possibility of remote sensing and extreme assay miniaturisation. Additionally it does not require reference signal. This new approach can impact on a number of applications such as routine minimal- invasive diagnostics for medical samples, biomedical analysis, pharmaceutical or cosmetic research, quality control and process monitoring of food or environmental samples.
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Roy, Aditi. „Study to explore molecular inclusion complexes of cyclic hosts with vital guests in various environments“. Thesis, University of North Bengal, 2018. http://ir.nbu.ac.in/handle/123456789/2633.

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Kierczak, Marcin. „From Physicochemical Features to Interdependency Networks : A Monte Carlo Approach to Modeling HIV-1 Resistome and Post-translational Modifications“. Doctoral thesis, Uppsala universitet, Centrum för bioinformatik, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-109873.

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The availability of new technologies supplied life scientists with large amounts of experimental data. The data sets are large not only in terms of the number of observations, but also in terms of the number of recorded features. One of the aims of modeling is to explain a given phenomenon in possibly the simplest way, hence the need for selection of suitable features. We extended a Monte Carlo-based approach to selecting statistically significant features with discovery of feature interdependencies and used it in modeling sequence-function relationships in proteins. Our approach led to compact and easy-to-interpret predictive models. First, we represented protein sequences in terms of their physicochemical properties. This was followed by our feature selection and discovery of feature interdependencies. Finally, predictive models based on e.g., decision trees or rough sets were constructed. We applied the method to model two important biological problems: 1) HIV-1 resistance to reverse transcriptase-targeted drugs and 2) post-translational modifications of proteins. In the case of HIV resistance, we were not only able to predict whether the mutated protein is resistant to a drug or not, but we also suggested some new, previously neglected, mutations that possibly contribute to drug resistance. For all these mutations we proposed probable molecular mechanisms of action using literature and 3D structure studies. In the case of predicting PTMs, we built high accuracy models of modifications. In comparison to other methods, we were able to resolve whether the closest neighborhood of a residue (the nanomer) is sufficient to determine its modification status. Importantly, the application of our method yields networks of interdependent physicochemical properties of amino acids that show how these properties collaborate in establishing a given modification. We believe that the presented methods will help researchers to analyze a large class of important biological problems and will guide them in their research.
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Rumpf, Katharina [Verfasser], Andreas [Akademischer Betreuer] Jossen, Andreas [Gutachter] Jossen und Kai-Peter [Gutachter] Birke. „Causes and effects of inhomogeneity in lithium-ion battery modules: A physicochemical modelling approach / Katharina Rumpf ; Gutachter: Andreas Jossen, Kai-Peter Birke ; Betreuer: Andreas Jossen“. München : Universitätsbibliothek der TU München, 2018. http://d-nb.info/1176701835/34.

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Dib, Omar. „Implementation of a physio-chemical approach coupled with a data fingerprinting methodology for the characterization of the Lebanese extra-virgin olive oils“. Thesis, université Paris-Saclay, 2021. http://www.theses.fr/2021UPASB004.

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L'huile d'olive est une composante vitale du régime méditerranéen en raison de sa valeur nutritionnelle et économique bien connues. Plusieurs facteurs environnementaux, agricoles et technologiques jouent un rôle important dans la définition de la qualité de l'huile d'olive. Au Liban, des études préliminaires ont montré que certains critères de qualité dépassent les valeurs seuils des normes éditées par le Conseil Oléicole International (COI) pour les huiles d’olive extra-vierges, dont les causes n'ont pas été identifiées. En conséquence, quatre-vingt-seize échantillons d'huile d'olive ont été récoltés sur deux saisons, traités en utilisant différentes méthodes d'extraction et collectés sur huit sites (Akkar, Chouf, Hasbaya, Koura, Tyr, Nabatiyeh, Zgharta et Hermel) à fort potentiel pour l’obtention d’une indication géographique protégée (IGP). Dans cette optique, les huiles extraites et/ou collectées, ont été soumises à une analyse chimique conventionnelle comme suggéré par le COI et à une analyse rapide en utilisant la spectroscopie de fluorescence 3D en mode frontal (3D-FFFS) et la chromatographie en phase gazeuse ultra-rapide (Ultra-Fast GC).Une corrélation entre le profil en acides gras et les conditions pédoclimatiques des principales régions oléicoles du Liban a été constatée. L'altitude, la température et l'humidité relative sont les principaux facteurs d’influence du profil d'acides gras. Les régions libanaises à haute altitude, à température moyenne basse et à faible humidité relative ont une teneur élevée en acide oléique. Les zones à basse altitude, à température moyenne plus élevée et avec une humidité relative plus élevée ont un profil en acides gras caractérisé par les acides linoléique, linolénique, palmitoléique et palmitique. Les facteurs agricoles, en particulier la date de récolte, affectent également les constituants majeurs et mineurs de l'huile d'olive. En effet, l'acidité et les polyphénols totaux étaient fortement influencés par celle-ci. De plus, une modification du profil d'acides gras caractérisée par une teneur en linoléique plus élevée, une teneur en oléique plus faible, une augmentation du ∆7-stigmasténol dépassant la limite fixée par le CIO et la présence de composés malodorants (dont l’éthanol) ont été observés lors de récoltes plus tardives. En outre, deux facteurs technologiques, notamment un stockage inadéquat des fruits et de mauvaises pratiques hygiéniques de fabrication, ont favorisé la lipolyse enzymatique du triacylglycérol du fruit modifiant de manière significative les profils d'arômes et d’acides gras de l'huile d'olive.La 3D-FFFS et l'Ultra-FGC ont toutes deux montré de très bonnes performances. La 3D-FFFS couplée à des techniques chimiométriques a été appliquée sur des qualités hétérogènes et dégradées d'échantillons d'huile d'olive libanaise afin de prédire les principaux paramètres physicochimiques de qualité. Ainsi, vingt-deux modèles de régression MLR basés sur les scores PARAFAC ont été générés, dont la majorité a montré un bon coefficient de corrélation (R>0,7). Un deuxième modèle, utilisant la PLS sur les matrices d'émission-excitation (EEM) dépliées, a conduit à des résultats similaires, avec une légère amélioration par rapport au modèle MLR. D’autre part, l’Ultra Flash GC a permis d’identifier en quelques minutes seulement (< 2 min) l'éthanol, le (E,E)-2,4-décadiénal (défaut organoleptique) et le 1-hexanol (fruité, herbeux) comme principaux volatils caractérisant la variété Soury.Cette étude offre la possibilité d’établir au Liban un plan de contrôle analytique qui lie les aspects environnementaux et les techniques de culture/récolte aux caractéristiques physico-chimiques de l'huile d'olive qui en résultent. Une telle matrice monitorée à l’aide de techniques d'analyse rapide facilitera la vérification de la conformité du produit final aux normes internationales. En outre, ce travail préparera le terrain grâce à une fiche d'identification détaillée pour l'IGP
Olive oil is a vital component of the Mediterranean diet, hence Lebanese, owed to its well-known economic and nutritional value. Several environmental, agricultural, and technological factors play an essential role in defining olive oil's quality. In Lebanon, preliminary studies on the quality of extra virgin olive oil have shown that certain quality criteria exceed the International Olive Council's (IOC) standards. However, the causes of such non-conformities have not been clearly identified. Accordingly, ninety-six olive oil samples have been harvested from two seasons, processed using different extraction methods, and collected from eight locations (Akkar, Chouf, Hasbaya, Koura, Tyr, Nabatiyeh, Zgharta, and Hermel). These locations are identified by the European Union to have potentials for Protected Geographical Indications (PGI). In this perspective, and to meet the European framework's requirements, the analyzed oil will be subjected to conventional chemical analysis as suggested by the IOC and to ultra-fast analysis using 3D-front face spectroscopy (3D-FFFS) and ultra-flash gas chromatography (Ultra-FGC).A correlation between the fatty acid profile and the pedoclimatic conditions of the main olive growing regions in Lebanon was noticed. Three main pedoclimatic conditions, altitude, temperature, and relative humidity, were the major influencers and the reason for the distinctive fatty acid profile of the Lebanese olive oil. Lebanese areas with high altitudes, low average temperature, and low relative humidity have high oleic acid content. As for areas with lower altitudes, higher average temperature, and higher relative humidity, the fatty acid profile was characterized by linoleic, linolenic, palmitoleic, and palmitic acids. In addition to the environmental factors, agricultural ones, particularly the harvest date, had affected the chemical constituents of olive oil. The results obtained showed that the harvest date strongly influenced acidity and total polyphenols. A change in the fatty acid profile characterized by a higher linoleic and lower oleic content, an increase in ∆^7-stigmastenol exceeding the limit set by the IOC standards, and a dominating off-flavor compound (ethanol) was noticed as a result of delaying the harvesting time. Besides, two technological factors, particularly improper fruit storage, and bad hygienic practices, significantly affected olive oil’s quality parameters and fatty acid content.3D-FFFS and Ultra-FGC were used in-line with conventional analysis, and they both showed an undeniable performance. 3D-FFFS coupled with chemometric tools, namely multiple linear regression (MLR) applied on parallel factor (PARAFAC) scores and partial least squares (PLS), was tested on inconsistent qualities of olive oil samples to predict quality parameters. Twenty-two MLR models were generated, the majority of which showed a good correlation coefficient (R>0.7). A second model using PLS on the unfolded emission-excitation matrices was also conducted to improve the regression and assess whether the variability can be handled successfully. However, similar results, with a slight improvement over the MLR model, were obtained. As for Ultra Flash GC, it made it possible to identify, in only a few minutes (< 2 min), ethanol, (E,E)-2,4-decadienal (organoleptic defect), and 1-hexanol (fruity, grassy) as the main volatiles characterizing the Soury variety.This study offers the potential to disseminate an analytical control plan that links environmental aspects in Lebanon and cultivation/harvesting techniques to olive oil's resulting physicochemical characteristics. Such a matrix incorporating rapid analysis techniques will facilitate governance over the end product's final quality and, subsequently, conformity to IOC standards. Furthermore, this work will set the ground through a detailed identification fiche for PGI
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Dorji, Kinzang. „Utility of an existing biotic score method in assessing the stream health in Bhutan“. Thesis, Queensland University of Technology, 2016. https://eprints.qut.edu.au/97993/1/Kinzang_Dorji_Thesis.pdf.

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In many countries water quality is assessed by using indices derived from the presence of macroinvertebrate species. This study aimed to improve the application of one such index (Hindu-Kush Himalaya based index: HKHbios) to rivers and streams in Bhutan. Sampling in a number of different streams showed that there was a strong influence of the monsoon on stream macroinvertebrates, however the month to month and site to site HKHbios scores showed no consistent patterns. Dry season sampling and increased ecological information on a number of macroinvertebrate taxa were identified as areas where water quality assessment in Bhutanese streams could be improved.
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Dutta, Ashutosh. „Exploration of diversified interactions of some significant compounds prevalent in several environments by physicochemical contrivance“. Thesis, University of North Bengal, 2018. http://ir.nbu.ac.in/handle/123456789/2787.

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Bücher zum Thema "Physicochemical Approach"

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Singh, Man. Innovative Approach to Physicochemical Analysis. I.K. International Publishing House Pvt. Ltd, 2020.

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Peralta-Videa, Jose, und Guadalupe De La Rosa. Physicochemical Interactions of Engineered Nanoparticles and Plants : : A Systemic Approach. Elsevier Science & Technology Books, 2022.

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Peralta-Videa, Jose, und Guadalupe De La Rosa. Physicochemical Interactions of Engineered Nanoparticles and Plants: A Systemic Approach. Elsevier Science & Technology, 2022.

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Grassi, Gabriele, Mario Grassi, Nicola De Zordi, Ireneo Kikic, Mariarosa Moneghini und Stefano Antonio Mezzasalma. Physicochemical Approaches to the Characterization of Pharmaceutical Systems. Elsevier, 2023.

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Grassi, Gabriele, Mario Grassi, Nicola De Zordi, Ireneo Kikic und Mariarosa Moneghini. Physicochemical Approaches to the Characterization of Pharmaceutical Systems. Elsevier, 2019.

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PhysicoChemical and Computational Approaches to Drug Discovery Rsc Drug Discovery. Royal Society of Chemistry, 2012.

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McGuiness, C. L., R. K. Smith, M. E. Anderson, P. S. Weiss und D. L. Allara. Nanolithography using molecular films and processing. Herausgegeben von A. V. Narlikar und Y. Y. Fu. Oxford University Press, 2017. http://dx.doi.org/10.1093/oxfordhb/9780199533060.013.23.

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This article focuses on the use of molecular films as building blocks for nanolithography. More specifically, it reviews efforts aimed at utilizing organic molecular assemblies in overcoming the limitations of lithography, including self-patterning and directed patterning. It considers the methods of patterning self-assembled organic monolayer films through soft-lithographic methods such as microcontact printing and nanoimprint lithography, through direct ‘write’ or ‘machine’ processes with a nanometer-sized tip and through exposure to electron or photon beams. It also discusses efforts to pattern the organic assemblies via the physicochemical self-assembling interactions, including patterning via phase separation of chemically different molecules and insertion of guest adsorbates into host matrices. Furthermore, it examines the efforts that have been made to couple patterned molecular assemblies with inorganic thin-film growth methods to form spatially constrained, three-dimensional thin films. Finally, it describes a hybrid self-assembly/conventional lithography (i.e. molecular rulers) approach to forming nanostructures.
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Maysinger, Dusica, P. Kujawa und Jasmina Lovrić. Nanoparticles in medicine. Herausgegeben von A. V. Narlikar und Y. Y. Fu. Oxford University Press, 2017. http://dx.doi.org/10.1093/oxfordhb/9780199533060.013.14.

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This article examines the applications of nanoparticles in medicine. Nanomedicine is a promising field that can make available different nanosystems whose novel, usually size-dependent, physical, chemical and/or biological properties are exploited to combat the disease of interest. One kind of particulate systems represents a vast array of either metallic,semiconductor, polymeric, protein or lipid nanoparticles that can be exploited for diagnosis and treatment of various diseases. This article first provides an overview of general issues related to physicochemical and biological properties of different nanoparticles. It then considers the current problems associated with the use of nanoparticles in medicine and suggests some solutions. It also discusses the interaction of nanoparticles with cells and factors that determine these interactions and concludes with some examples of new approaches for real-time imaging of experimental animals that could be useful, complementary methods for evaluations of effectiveness (or toxicity) of novel nanomaterials andnanomedicines.
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Buchteile zum Thema "Physicochemical Approach"

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Chaari, Moufida, und Slim Smaoui. „Physicochemical Properties of Citrus Fruits: Analytical Approach for Physicochemical Parameters of Citrus Fruit and Juice“. In Citrus Fruits and Juice, 69–87. Singapore: Springer Nature Singapore, 2024. http://dx.doi.org/10.1007/978-981-99-8699-6_4.

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Osaki, Shigeyoshi. „Physicochemical Properties of Spider Silk-An Approach to Nanostructure“. In Macromolecular Nanostructured Materials, 297–320. Berlin, Heidelberg: Springer Berlin Heidelberg, 2004. http://dx.doi.org/10.1007/978-3-662-08439-7_19.

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Rytting, J. Howard. „Prediction of Physicochemical Properties Using a Semi-Empirical Group Contribution Approach“. In Physical Property Prediction in Organic Chemistry, 449–68. Berlin, Heidelberg: Springer Berlin Heidelberg, 1988. http://dx.doi.org/10.1007/978-3-642-74140-1_26.

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Lemarchand, Eric, Luc Dormieux und Franz-Josef Ulm. „A Micromechanics Approach to the Mechanically-Induced Dissolution in Porous Media“. In IUTAM Symposium on Physicochemical and Electromechanical Interactions in Porous Media, 321–27. Dordrecht: Springer Netherlands, 2005. http://dx.doi.org/10.1007/1-4020-3865-8_37.

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Kienzl, E., P. Riederer, K. Jellinger und N. Noller. „A Physicochemical Approach to Characterize [3H] -Tryptamine-Binding-Sites in Human Brain“. In Neuropsychopharmacology of the Trace Amines, 469–85. Totowa, NJ: Humana Press, 1985. http://dx.doi.org/10.1007/978-1-4612-5010-4_47.

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Jain, Gaurav, Sunil Kumar und Rajesh Kumar. „A Brief Review on ANN Approach towards the Physicochemical Properties of Biodiesel“. In Manufacturing Technologies and Production Systems, 97–108. Boca Raton: CRC Press, 2023. http://dx.doi.org/10.1201/9781003367161-9.

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Velazquez-Ruiz, Leonardo, Graciela Ramirez-Alonso, Fernando Gaxiola, Javier Camarillo-Cisneros, Daniel Espinobarro und Alain Manzo-Martinez. „Approximation of Physicochemical Properties Based on a Message Passing Neural Network Approach“. In Hybrid Intelligent Systems Based on Extensions of Fuzzy Logic, Neural Networks and Metaheuristics, 15–26. Cham: Springer Nature Switzerland, 2023. http://dx.doi.org/10.1007/978-3-031-28999-6_2.

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Ghosh, Supradip. „Acid Base Homeostasis: Stewart Approach at the Bedside“. In Rational Use of Intravenous Fluids in Critically Ill Patients, 153–65. Cham: Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-031-42205-8_7.

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AbstractDespite its simplicity and wide availability, traditional approach fails to provide us with an insight into mechanisms of acid base abnormalities or accurately quantify individual components of it or provide clinician with an approach to decide probable ways to rectify the problem (if necessary). Sometimes, traditional approach fails to identify complex acid base disorders seen in critically ill patients. The approach to acid base disorders provided by Peter Stewart is based on robust physicochemical evidence. Stewart approach identified three independent variables that determine acid base homeostasis—total carbon di-oxide, strong ion difference (SID), and total nonvolatile acid anion (Atot). Fencl provided some simple calculations to measure these independent variables at the bedside. Stewart approach provides us with an insight into the acid base abnormalities and helps us in quantifying individual components producing any disturbance and measures to be taken to rectify them (if needed). Stewart’s approach is also useful in understanding effects of different intravenous fluids on acid base physiology of plasma.
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Roy, Malabika Biswas, Pankaj Kumar Roy, Sudipa Halder, Gourab Banerjee und Asis Mazumdar. „Assessment of Stream Flow Impact on Physicochemical Properties of Water and Soil in Forest Hydrology Through Statistical Approach“. In Springer Climate, 207–25. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-67865-4_9.

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Praveena, B., M. Pramod Kumar, T. Lakshmi Prasad und N. Jayaraju. „Evaluation of Physicochemical Parameters of Coastal Water from Pennar River Estuary, East Coast of India: An Integrated Approach“. In Coasts, Estuaries and Lakes, 77–91. Cham: Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-031-21644-2_5.

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Konferenzberichte zum Thema "Physicochemical Approach"

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Maharani, Nabilla Adiya, Romario Dion, Meitri Putri Damayanti, Alchibalt Bima Putra Dzufakar, Candra Wahyuningsih, Muhammad Iskandar Zulkarnain, Amalia Kharisma Putri et al. „Bacterial diversity and physicochemical profiles in Pekalongan waters, Indonesia“. In ADVANCES IN INTELLIGENT APPLICATIONS AND INNOVATIVE APPROACH. AIP Publishing, 2023. http://dx.doi.org/10.1063/5.0140202.

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Fathy, Ahmed, Muhammad Arif, Clement Afagwu, MD Motiur Rahman, Mujahid Ali, Stefan Iglauer, Nevin Mathew und Mohamed Mahmoud. „Wettability of Shale/Oil/Brine Systems: A New Physicochemical and Imaging Approach“. In International Petroleum Technology Conference. IPTC, 2022. http://dx.doi.org/10.2523/iptc-22177-ms.

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Abstract Wetting characteristics of shale/oil/brine systems at reservoir conditions are important for understanding fluid distribution, flow within shale microstructure, and flow back of fracturing fluid. However, shale wettability demonstrates complexity from core to nanoscale due to microstructure heterogeneity. Shale is believed to exbibit mixed wettability such that the organic matter is hydrophobic or oil-wet and the inorganic mineral is hydrophilic or water-wet. Moreover, the application of nanofluids (e.g., silica) as chemical enhanced oil recovery (CEOR) agents has gained growing interest justified by their promising potential. Thus, to elucidate the complex wetting behavior of shale/oil/brine systems before and after exposure to nanofluids, it is essential to consider the influence of broad mineralogy, TOC (Total Organic Carbon), and aging time of shale surfaces in nanofluids. In this paper, a new physicochemical approach coupled with imaging analysis is proposed to emphasize the interactions of shale/decane/brine systems (before and after aging in nanofluids) for precise shale wettability characterization. Here, the wettability of three US shale oil rocks (Eagle Ford, Wolfcamp, and Mancos) was assessed at ambient and HPHT conditions via advancing and receding contact angle measurements followed by wettability assessment post-aging in different nanofluid concentrations (0.1 wt. % to 5 wt. %). Further, the physicochemical features that influence wettability e.g., surface chemistry, mineral composition, TOC, and kerogen maturity have been investigated. These factors have been assessed via sets of physicochemical measurements such as FTIR (Fourier-Transform Infrared Spectroscopy), XRD (X-Ray Diffraction) analysis, SEM (Scanning Electron Microscopy), and AFM (Atomic Force Microscopy) imaging. Furthermore, the varying thermophysical conditions of pressure and temperature are also investigated. The results revealed significant variations in shale initial wettability with Mancos being weakly water-wet while Eagle Ford and Wolfcamp were moderately oil-wet. Moreover, increasing pressure (from 1 MPa to 20 MPa) shifted the wettability of shale rock surfaces towards relatively more oil-wet witnessed by an increase in advancing and receding contact angles. However, no noticeable trend was observed for contact angle variation with temperature. The original wetting behavior of shales is then related to their functional groups and mineralogy. Additionally, shale surfaces witnessed a shift towards a more water-wet state after aging in silica nanofluids at different concentrations. Therefore, this paper provides a new approach for examining the complex shale wettability behavior that relies on a combination of HPHT conditions, physicochemical analysis, and image analysis. Importantly, the results suggest that nanofluid can alter shale wettability towards a more water-wet state – thus showing potential for application as a flowback additive in fracturing or as a CEOR agent in shales.
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Miftakhov, Eldar, Tatyana Mikhailova und Svetlana Mustafina. „Methods and Algorithms for Implementation of Imitation Approach to Modeling of Physicochemical Processes“. In 2024 International Russian Smart Industry Conference (SmartIndustryCon). IEEE, 2024. http://dx.doi.org/10.1109/smartindustrycon61328.2024.10515621.

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Ishola, K., O. Bamidele, K. Oyedele und L. Adeoti. „A Combined Approach of Electrical Resistivity and Physicochemical Methods for Mapping of Hydrocarbon Contaminated Site“. In 24th European Meeting of Environmental and Engineering Geophysics. Netherlands: EAGE Publications BV, 2018. http://dx.doi.org/10.3997/2214-4609.201802496.

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Hernandez, B., J. Salazar, S. Castilla, J. Borjas und G. Jimenez. „Title Physicochemical Water Control: A Sustainable and Practical Approach to Avoid Deferred Production Related to Chemical Problems and Consumption Management“. In SPE Water Lifecycle Management Conference and Exhibition. SPE, 2024. http://dx.doi.org/10.2118/219073-ms.

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Abstract Managing oil and gas production requires the integration and analysis of multiple sources, including chemical analysis data, laboratory reports, and specialized analyses. Quick and efficient access to this data will allow engineers to focus on generating analysis and decision-making tasks to improve production and field performance. This document presents an overview of the project on the implementation of an automated workflow designed to support the analysis physicochemical of production water applied to Colombian fields. The project was developed through cloud apps, as a new platform that supports the visualizer solution, using data analysis and the production domain of physicochemical. The implementation consists of three stages, the first standardized the information from the field physicochemical, which was stored in Database as a centralized platform. With the results from the first step, the second stage begins to apply different automated calculations to establish the Langelier, Ryznar, Puckorius and Larson Indexes, among others, to determine the stability of the fluids and formations of corrosion, wax, scale, asphaltenes with the objective of identifying and improving self-sufficiency, product consumption and ensuring operational autonomy. The third stage and completion of the solution workflow is integrated through data analysis where the calculations are visualized based on different knowledge, avoiding delays associated with chemical problems and allowing the flow assurance of the wells that are part of the field. This workflow resulted in considerable time savings as relevant data will be automatically updated and used in analysis, instead of manual processing, improving efficiency in field management practices. Furthermore, it is a new workflow that can be replicated in other solutions.
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Oliveira, Wanderley Pereira, Victor Oloruntoba Bankole und Claudia Regina F. Souza. „Spray dried proliposomes of Rosmarinus officinalis polyphenols: a quality by design approach“. In 21st International Drying Symposium. Valencia: Universitat Politècnica València, 2018. http://dx.doi.org/10.4995/ids2018.2018.7859.

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Harnessing the benefits of rosemary polyphenols is limited by variability in their physicochemical properties. These limitations may be overcome by encapsulation in systems possessing hydro-lipophilic centers thereby accommodating molecules of different polarities. Proliposomes offer a viable option in this regards, being particles which form liposomal suspension in water. Lyophilized extracts of rosemary was encapsulated in hydrogenatedsoyphosphatidylcholine/cholesterol by solvent replacement method. Spray dried proliposomes were obtained with lactose as carrier. Using Central Composite Design, the effects of lipid, extract and carrier concentrations on response variables including bioactive content and retention, moisture content characteristics, recuperation and redispersibility were evaluated by statistical analysis. Keywords: Polyphenols; antioxidant; proliposomes; spray drying
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Shqair, M., Z. Khatir, A. Ibrahim, M. Berkani, A. Halouani und T. Hamieh. „Physicochemical-microstructural approach for modeling the crack passage at topside metallic parts in IGBT semiconductor power electronics“. In 2022 23rd International Conference on Thermal, Mechanical and Multi-Physics Simulation and Experiments in Microelectronics and Microsystems (EuroSimE). IEEE, 2022. http://dx.doi.org/10.1109/eurosime54907.2022.9758895.

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Qu, M. „Mechanisms of Nanofluid Based Modification MoS2 Nanosheet for Enhanced Oil Recovery“. In Indonesian Petroleum Association 44th Annual Convention and Exhibition. Indonesian Petroleum Association, 2021. http://dx.doi.org/10.29118/ipa21-e-162.

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Recently, much attention has been directed towards the applications of nanofluids for enhanced oil recovery (EOR). Here, amphiphilic molybdenum disulfide (KH550-MoS2) nanosheets were synthesized using a hydrothermal approach. The physicochemical properties and potential EOR of ultra-low concentration KH550-MoS2 nanofluids were systematically investigated under reservoir conditions at Changqing Oilfield (China) (temperature~55℃ and salinity~7.8×104 mg/L). Interfacial tension (IFT), wettability change, and emulsion stability were measured to evaluate the physicochemical properties of the KH550-MoS2 nanofluids. The results showed that ultra-low concentration of KH550-MoS2 nanofluid (50 mg/L) could decrease IFT to 2.6 mN/m, change the contact angle (CTA) from 131.2° to 51.7° and significantly enhance emulsion stability. Core flooding experiments were conducted to determine the dynamic adsorption loss law and the oil displacement efficiency of KH550-MoS2 nanofluid. The results indicated that the ratio of cumulative produced KH550-MoS2 nanosheets to the total injected KH550-MoS2 nanosheets (CNR) reached 91.5% during flooding in low permeability reservoirs. Moreover, ultra-low concentration KH550-MoS2 nanofluid can increase the oil displacement efficiency by 14% after water driven. This study shows the physicochemical properties of the KH550-MoS2 amphiphilic nanofluid and offers a novel high- efficiency amphiphilic nanofluid for EOR
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Shah, Shreyas, Quoc Mac, John Kim und Michael S. Eggleston. „Aptamer-Based Microparticles for Biochemical Sensing Using Optical Coherence Tomography“. In Frontiers in Optics. Washington, D.C.: Optica Publishing Group, 2022. http://dx.doi.org/10.1364/fio.2022.jw4b.48.

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We developed a modular approach for biochemical sensing using aptamer-based microparticles and swept-source OCT. Tuning the crosslinker composition of the microparticle enabled varying physicochemical responses to a target biochemical, ranging from degradation to reversible swelling, which was spatiotemporally monitored in tissue-mimics using OCT.
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Rioja Diez, Y., C. Fernández Martínez-Llamazares, S. Manrique Rodriguez, MDP Montero Antón, A. Carrillo Burdallo, D. Gomez, A. Prieto Romero et al. „4CPS-195 Characterisation of injectable formulations and optimisation of their delivery by enteral tube: a physicochemical and physiological approach“. In 28th EAHP Congress, Bordeaux, France, 20-21-22 March 2024. British Medical Journal Publishing Group, 2024. http://dx.doi.org/10.1136/ejhpharm-2024-eahp.299.

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Berichte der Organisationen zum Thema "Physicochemical Approach"

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Tuller, Markus, Asher Bar-Tal, Hadar Heller und Michal Amichai. Optimization of advanced greenhouse substrates based on physicochemical characterization, numerical simulations, and tomato growth experiments. United States Department of Agriculture, Januar 2014. http://dx.doi.org/10.32747/2014.7600009.bard.

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Over the last decade there has been a dramatic shift in global agricultural practice. The increase in human population, especially in underdeveloped arid and semiarid regions of the world, poses unprecedented challenges to production of an adequate and economically feasible food supply to undernourished populations. Furthermore, the increased living standard in many industrial countries has created a strong demand for high-quality, out-of-season vegetables and fruits as well as for ornamentals such as cut and potted flowers and bedding plants. As a response to these imminent challenges and demands and because of a ban on methyl bromide fumigation of horticultural field soils, soilless greenhouse production systems are regaining increased worldwide attention. Though there is considerable recent empirical and theoretical research devoted to specific issues related to control and management of soilless culture production systems, a comprehensive approach that quantitatively considers all relevant physicochemical processes within the growth substrates is lacking. Moreover, it is common practice to treat soilless growth systems as static, ignoring dynamic changes of important physicochemical and hydraulic properties due to root and microbial growth that require adaptation of management practices throughout the growth period. To overcome these shortcomings, the objectives of this project were to apply thorough physicochemical characterization of commonly used greenhouse substrates in conjunction with state-of-the-art numerical modeling (HYDRUS-3D, PARSWMS) to not only optimize management practices (i.e., irrigation frequency and rates, fertigation, container size and geometry, etc.), but to also “engineer” optimal substrates by mixing organic (e.g., coconut coir) and inorganic (e.g., perlite, pumice, etc.) base substrates and modifying relevant parameters such as the particle (aggregate) size distribution. To evaluate the proposed approach under commercial production conditions, characterization and modeling efforts were accompanied by greenhouse experiments with tomatoes. The project not only yielded novel insights regarding favorable physicochemical properties of advanced greenhouse substrates, but also provided critically needed tools for control and management of containerized soilless production systems to provide a stress-free rhizosphere environment for optimal yields, while conserving valuable production resources. Numerical modeling results provided a more scientifically sound basis for the design of commercial greenhouse production trials and selection of adequate plant-specific substrates, thereby alleviating the risk of costly mistrials.
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Baxter, W., Amanda Barker, Samuel Beal, Lauren Bosche, Ryan Busby, Zoe Courville, Elias Deeb et al. A comprehensive approach to data collection, management, and visualization for terrain characterization in cold regions. Engineer Research and Development Center (U.S.), Februar 2024. http://dx.doi.org/10.21079/11681/48212.

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As global focus shifts to northern latitudes for their enhanced access to newly viable resources, US Army operational readiness in these extreme environments is increasingly important. Rapid and accurate intelligence on the conditions influencing operations in these regions is essential to mission success and warfighter safety. Arctic and boreal environments are highly heterogeneous, including changing extents of frozen versus thawing ground, snow, and ice that affect ground trafficability and visibility, terrain physics, and physicochemical properties of water and soil. Furthermore, projected climatic warming in these regions makes the timing of seasonal transitions increasingly uncertain. Broad coverage of long-term datasets is critical for assessing spatial and temporal variability in these northern environments at the landscape-scale. However, decadal measurements are difficult to acquire, manage, and visualize in the field setting. Here, we present a synopsis of data collection, management, and visualization for long-term permafrost, snow, vegetation, geophysics, and biogeochemical data from Alaska and review related literature. We also synthesize short-term data from various permafrost affected sites in the US and northern Europe to further assess the state of northern landscapes. Altogether, this work provides a comprehensive approach for high-latitude field site management to accurately inform mission-related operations in extreme northern environments.
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