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Littérature scientifique sur le sujet « Onde calcio »

Auteur : Grafiati

Publié le 9 mars 2023

Mis à jour le 31 juillet 2025

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Articles de revues sur le sujet "Onde calcio"

Freitas, Nélio Martins, Angela Maria Correa Mouzinho Santos, and Lucy Rose de Maria Oliveira Moreira. "AVALIAÇÃO FITOQUÍMICA E DETERMINAÇÃO DE MINERAIS EM AMOSTRAS de Hibiscus sabdariffa L (vinagreira)." Cadernos de Pesquisa 20, no. 3 (2013): 65. http://dx.doi.org/10.18764/2178-2229.v20n3p65-72.

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O presente trabalho teve como objetivo determinar por espectroscopia de emissão óptica com plasma indutivamente acoplado (ICP OES) o teor dos minerais cobalto, cobre, ferro, fósforo, cálcio, magnésio,manganês, níquel, potássio e zinco, presentes nas folhas e no caule do Hibiscus sabdariffa L (vinagreira).Fez-se a triagem fitoquímica para verificar os compostos fitoquímicos como saponinas, taninos, fenóis, terpenos, esteróides, alcalóides, resinas, e flavonóides) da vinagreira coletada do município de São José de Ribamar-MA, onde os agricultores plantam o H. sabdariffa L) e comercializam para a

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Hernández-Somerson, Mario Andrés. "Onda sinusoidal en el electrocardiograma." Acta Médica Colombiana 41, no. 1 (2016): 74. http://dx.doi.org/10.36104/amc.2016.572.

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Mujer de 58 años, con cuadro de una semana de evolución consistente en astenia progresiva, disnea con esfuerzos medianos y en últimas 48 horas somnolencia marcada. No refiere antecedentes de importancia. A su ingreso con Tensión arterial en 90/60, frecuencia cardíaca: 50 por minuto, frecuencia respiratoria 14 por minuto y afebril. Se observa con signos de deshidratación grado II y estuporosa. Se toma glucometría en 95 mg/dL y electrocardiograma (figura 1) con evidencia ausencia de onda P con R-R regular y ensanchamiento del complejo QRS (130 mseg), con intervalo QT corregido prolongado (

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Castillo-Lizama, A.D., P.R. Escobar-Henríquez, A.M. Lazo-Jovel, L. Serrano-Cervantes, N.S. Solano-Melara, and E. Martínez-Umaña. "Comparación de contenido de proteína, grasa, calcio y fósforo de grillos (Acheta domesticus), en su etapa juvenil, alimentados con diferentes sustratos." Revista Agrociencia 5, no. 20 (2021): 26–34. https://doi.org/10.5281/zenodo.10631330.

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La investigación se realizó en el Parque Zoológico Nacional de El Salvador durante once semanas (junio-septiembre 2020), en las que se determinó el contenido de proteína, grasa, calcio y fósforo de los grillos (<em>Acheta domesticus</em>) en etapa juvenil a través del cambio del alimento que se ofrece gracias a un estudio bromatológico realizado en el Departamento de Química Agrícola de la Facultad de Ciencia Agronómicas de la Universidad de El Salvador. Se concluyó que la utilización de niveles de prote

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Yoplac, Ives Julian, Katerin Goñas, Wilmer Bernal, Héctor V. Vásquez, and Jorge L. Maicelo. "Caracterización química y digestibilidad in vitro de semillas y subproductos agroindustriales amazónicos con potencial para alimentación animal." Revista de Investigaciones Veterinarias del Perú 32, no. 3 (2021): e18765. http://dx.doi.org/10.15381/rivep.v32i3.18765.

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Se determinaron las características químicas y digestibilidad in vitro de once insumos, divididos en tres grupos: semillas (sacha inchi [(Plukenetia volubilis], higuerilla [Ricinus communis] y chía [Salvia hispanica]), subproductos derivados del arroz (nielen, cascarilla y polvillo) y residuos agroindustriales de plantas y frutas tropicales (bagazo de caña de azúcar, pulpa de café, casco externo y mucílago de cacao [Theobroma cacao)], pulpa de naranja [Citrus sinensis] y vaina de taya [Caesalpinia spinosa]) con potencial en la alimentación animal. Las muestras fueron recolectadas en la región

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Márquez Prieto, Antonio. "Entre algoritmos: género humano y género artificial." E-REVISTA INTERNACIONAL DE LA PROTECCION SOCIAL 7, no. 1 (2022): 30–51. http://dx.doi.org/10.12795/e-rips.2022.i01.03.

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La inteligencia artificial, que lleva ya décadas de desarrollo, supone cada vez más una realidad presente en las relaciones laborales, de forma sectorizada, pero evidenciándose al mismo tiempo en toda la realidad económica y social. Por ello aquí se aborda como fenómeno universal ante el que se intentan ofrecer medidas legales de regulación, las cuales, en la medida en que responden al binomio conducta-norma, resultan inadecuadas puesto que el desarrollo de la inteligencia artificial requiere un enfoque en el que entre en juego, como tercer elemento, la propia cultura humana de valores subyace

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Sam-Uket, Nwuyi O., and Bassey S. Okori. "HEALTH RISK ASSESSMENT OF ORGANOCHLORINE PESTICIDE RESIDUE IN CRUDE PALM OILS IN SELECTED PALM PLANTATIONS IN CROSS RIVER STATE, NIGERIA." Environmental Contaminants Reviews 7, no. 2 (2024): 145–50. https://doi.org/10.26480/ecr.02.2024.145.150.

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Crude palm oil (CPO) is thought to be the most produced and consumed vegetable oil globally. However, when oil palm is grown using pesticides, it may contain OCP residues, which could be hazardous to humans due to their bioaccumulation in the body. For this reason, this study was conducted. Over the course of six months, the processed CPO (n = 18) was gathered once a month from the oil palm plantations owned by JP, Calaro, and Mrs. P. (control). The samples underwent analysis using gas chromatography mass spectrometry (GC-MS/MS) to detect the presence of organochlorinated pesticides (OCPs). Di

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Ventura, Luca, and Mirko Traversari. "Pojavljuju se stari znanci." Collegium antropologicum 47, no. 3 (2023): 245–48. http://dx.doi.org/10.5671/ca.47.3.8.

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Shortly after the discovery of mummies in the village of Calascio, inner Abruzzo region an additional site in the same area has been brought to light in Filetto, a small hermit belonging to the municipality of L’Aquila. Since 2001, a collection of human remains dating back to 19th century was known to be present inside a crypt beneath the ruins of the Chiesa Vecchia (old church). The recent recovery of the ruined church allowed us to come across the remains once again. The human remains from Filetto represent the seventh known collection of mummified bodies in the inner Abruzzo region, enhanci

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Matyugin, Vladislav A., and Olga S. Bezuglova. "Effect of Humic Preparations on Winter Wheat Nitrogen Nutrition and Calcic Chernozem Urease Activity." UNIVERSITY NEWS. NORTH-CAUCASIAN REGION. NATURAL SCIENCES SERIES, no. 3 (219) (September 25, 2023): 106–16. http://dx.doi.org/10.18522/1026-2237-2023-3-106-116.

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The effectiveness of treatments of winter wheat crops with liquid humic preparations “EKOSS” and “BIO-Don” has been studied. Humic preparations were used as a working solution with a concentration of 0.002% (by carbon). The leaf apparatus of winter wheat was processed once (during the tillering phase) and twice (during the tillering and heading phases). The control was the variant without the introduction of humic preparations against the background of an average level of mineral nutrition N40P40K40 with the use of soil treatment technologies and cultivation methods adopted for this crop in th

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León Iglesias, Javier. "Un parche más para la incapacidad temporal / One more patch for temporary disability." E-REVISTA INTERNACIONAL DE LA PROTECCION SOCIAL 8, no. 2 (2023): 88–104. http://dx.doi.org/10.12795/e-rips.2023.i02.03.

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En el contexto actual de gasto prestacional creciente en materia de incapacidad temporal, originado por diversas variables, no investigadas en profundidad, la reforma de la Ley General de la Seguridad Social mediante el Real-Decreto-Ley 2/2023, de 16 de marzo, no introduce novedades de calado para solventar el problema de un sistema, que sigue sin alcanzar el deseable equilibrio entre evitar el abuso en el percibo de la prestación, y proporcionar la debida acción protectora a quienes agotan su período máximo legal, persistiendo las razones clínicas que motivaron la baja médica. Las nuevas reda

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Paris, Eleonora, Ziyu Wu, Annibale Mottana, and Augustο Marcelli. "Calcium environment in omphacitic pyroxenes: XANES experimental data versus one-electron multiple scattering calculations." European Journal of Mineralogy 7, no. 5 (1995): 1065–70. http://dx.doi.org/10.1127/ejm/7/5/1065.

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Thèses sur le sujet "Onde calcio"

FORCAIA, GRETA. "Multifunctional Liposomes modulate Purinergic Receptor-induced Calcium Wave in Cerebral Microvascular Endothelial Cells and Astrocytes." Doctoral thesis, Università degli Studi di Milano-Bicocca, 2020. http://hdl.handle.net/10281/261943.

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I nostri precedenti studi dimostrano che liposomi multifunzionalizzati con il monomero dell’ApoE e con acido fosfatidico (mApoE-PA-LIP) riducono l’accumulo di Aβ nel cervello migliorando il declino cognitivo in modelli murini di malattia di Alzheimer (AD) (Balducci et al., 2014). In riferimento ai nostri precedenti risultati, abbiamo studiato l’interazione di liposomi funzionalizzati con un peptide derivante dall’ApoE (mApoE) e acido fosfatidico (PA), con le cellule che costituiscono l’unità neurovascolare. In particolar modo, abbiamo valutato la loro attività in cellule di microcircolo cereb

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Aymer, de la Chevalerie Dominique. "Interaction onde de choc-couche limite modélisation et calcul." Grenoble 2 : ANRT, 1986. http://catalogue.bnf.fr/ark:/12148/cb37595581g.

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Hathouti, Abdelhadi. "Calcul des champs dans les fours micro-ondes." Toulouse, INPT, 1994. http://www.theses.fr/1994INPT024H.

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La conception des fours micro-ondes industriels et domestiques fait encore appel a l'experience et a l'empirisme car les outils de modelisation ne sont pas encore suffisamment developpes. Ce travail tente d'apporter une reponse par une double modelisation bidimensionnelle ecrite par la methode des elements finis et qui cherche a simuler la repartition volumique. Le champ thermique est fonction du materiau par ses caracteristiques electriques et thermiques, par sa forme et sa position dans le four mais aussi du four lui meme et de son excitation. Ce travail aborde ces differents aspects et insi

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GABER, OUSSAMA. "Ondes de choc supersoniques et calcul formel." Paris 6, 1999. http://www.theses.fr/1999PA066563.

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La determination par les methodes numeriques de l'evolution instationnaire ou stationnaire de l'onde de choc detachee qui se forme a l'avant d'un obstacle se deplacant a une vitesse supersonique ou hypersonique est couteuse en temps et demande de gros moyens de calculs surtout pour des resultats precis. Certains auteurs ont propose une autre approche dans laquelle le choc est donne par un developpement en serie de taylor. Nous proposons dans ce travail, de valider et etendre cette methode originale utilisant les approximants de pade et le calcul formel. Cette methode a trois principaux avantag

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Peyraut, François. "Calcul et visualisation de l'amortissement d'une onde harmonique dans un multicouche viscoelastique." Paris 6, 1991. http://www.theses.fr/1991PA066609.

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Pour rendre indetectable les sous-marins aux sonars ennemis, on concoit des revetements anechoiques susceptibles de reduire l'echo de la coque. Ces revetements sont constitues de materiaux viscoelastiques au sein desquels les ondes s'amortissent par dissipation. Pour evaluer l'amortissement, on calcule l'energie dissipee par de tels revetements a l'aide de la thermodynamique des milieux continus. En modelisant le comportement viscoelastique par une convolution en temps au sens des distributions, on se place dans le cadre le plus general possible. La determination des ondes se propageant au sei

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Escande, Béatrice. "Modélisation de l'interaction onde de choc/couche limite turbulente comparaison calcul-expérience." Grenoble 2 : ANRT, 1986. http://catalogue.bnf.fr/ark:/12148/cb375974105.

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Dupont, Geneviève. "Modélisation des oscillations et des ondes de calcium intracellulaire." Doctoral thesis, Universite Libre de Bruxelles, 1993. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/212822.

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Mora, Frédéric. "Visibilité polygone à polygone : calcul, représentation, application." Poitiers, 2006. http://www.theses.fr/2006POIT2292.

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Cette thèse aborde le problème du calcul et de la représentation de la visibilité mutuelle de polygones. Elle montre tout le potentiel et l'intérêt de cette information pour la résolution de problèmes difficiles en synthèse d'images et en propagation électromagnétique. Nous proposons un nouvel algorithme pour calculer la visibilité dans l'espace de Plücker, afin de minimiser les coûts en temps et mémoire vis-à-vis des précédentes approches. En synthèse d'images, nous utilisons l'information ainsi calculée pour proposer une nouvelle solution au calcul analytique des ombres douces en illuminatio

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Bruyant, Jean Paul. "Calcul de la diffraction d'une onde plane par une paroi diélectrique à surface rainurée." Bordeaux 1, 1985. http://www.theses.fr/1985BOR10627.

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Diffraction par un cylindre dielectrique de section arbitraire. Influence des effets de bord et calcul des performances de rubans dielectriques. Diffraction par un panneau dielectrique a surface rainuree

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KAHAN, MICHEL. "Approches stochastiques pour le calcul des ponts aux séismes." Marne-la-vallée, ENPC, 1996. http://www.theses.fr/1996ENPC9609.

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Nous proposons quelques méthodes stochastiques pour le calcul des ponts aux séismes. Nous étudions l'effet de la variabilité spatiale des ondes sismiques sur la réponse linéaire des ouvrages d'art grâce à une méthode de spectre de réponse pour structures multi-supportées. Nous proposons une méthode simplifiée pour le calcul rapide de la sensibilité des ouvrages à de petites variations spatiales ainsi qu'un algorithme pour déterminer la sollicitation la plus défavorable. Pour tenir compte des capacités de ductilité, nous proposons une méthode de spectre de réponse non-linéaire. Elle s'appuie su

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Livres sur le sujet "Onde calcio"

Keown, Tim. Skyline: One season, one team, one city. Macmillan, 1994.

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Hays, Gayleen. Policewoman one: My twenty years on the LAPD. Villard Books, 1992.

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Willis, Clare. Once bitten. Kensington Pub., 2009.

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Dempsey, Thomas Gregwer. True stories cops tell to one another. T. Dempsey, 1998.

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California Energy Commission. Siting Office. Staff assessment and draft environmental impact statement, Calico Solar Project: Application for certification (08-AFC-13), San Bernardino County. California Energy Commission, 2010.

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Tyler, Ben. One night stand. Kensington Books, 2004.

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Epperson, Tom. The kind one. Pocket Books, 2009.

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Marks, Johannes. Nuclear dipolar magnetism around one microkelvin in calciumhydroxide. Dutch Efficiency Bureau, 1985.

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Deutsch, Rick. One best hike: Yosemite's Half Dome. 2nd ed. Wilderness Press, 2012.

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Doherty, Dave. There once was a place called P.O.P. Xlibris, 2008.

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Chapitres de livres sur le sujet "Onde calcio"

Tveito, Aslak, and Glenn T. Lines. "One-Dimensional Calcium Release." In Lecture Notes in Computational Science and Engineering. Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-30030-6_2.

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Pettegree, Andrew. "Chapter One: Calvin and Luther as Men of the Book." In Calvin and the Book. Vandenhoeck & Ruprecht, 2015. http://dx.doi.org/10.13109/9783666550881.17.

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Gosling, Peter. "Lesson One." In Easily into Super Calc® 4. Macmillan Education UK, 1989. http://dx.doi.org/10.1007/978-1-349-10476-5_1.

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Cates, Dennis M. "DECOMPOSITION OF A DEFINITE INTEGRAL INTO SEVERAL OTHERS. IMAGINARY DEFINITE INTEGRALS. GEOMETRIC REPRESENTATION OF REAL DEFINITE INTEGRALS. DECOMPOSITION OF THE FUNCTION UNDER THE $$\int $$ SIGN INTO TWO FACTORS IN WHICH ONE ALWAYS MAINTAINS THE SAME SIGN." In Cauchy's Calcul Infinitésimal. Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-11036-9_23.

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Hirota, E., K. Kuchitsu, T. Steimle, J. Vogt, and N. Vogt. "66 CaHO Calcium(I) hydroxide." In Molecules Containing No Carbon Atoms and Molecules Containing One or Two Carbon Atoms. Springer Berlin Heidelberg, 2014. http://dx.doi.org/10.1007/978-3-540-70614-4_67.

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Hirota, E., K. Kuchitsu, T. Steimle, J. Vogt, and N. Vogt. "67 CaHS Calcium hydrogen sulfide." In Molecules Containing No Carbon Atoms and Molecules Containing One or Two Carbon Atoms. Springer Berlin Heidelberg, 2014. http://dx.doi.org/10.1007/978-3-540-70614-4_68.

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Hirota, E., K. Kuchitsu, T. Steimle, J. Vogt, and N. Vogt. "22 BCaH4 Tetrahydroborato(1-)-H,H',H''-calcium." In Molecules Containing No Carbon Atoms and Molecules Containing One or Two Carbon Atoms. Springer Berlin Heidelberg, 2014. http://dx.doi.org/10.1007/978-3-540-70614-4_23.

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Brownlee, C., N. F. H. Manison, and R. Anning. "Calcium, polarity and osmoregulation inFucus embryos: one messenger, multiple messages." In EBO Experimental Biology Online Annual 1998. Springer Berlin Heidelberg, 1999. http://dx.doi.org/10.1007/978-3-642-60083-8_11.

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Aldenhoff, J. B. "Lithium and Calcium Antagonists: Do They Act on One Neuronal Function?" In New Directions in Affective Disorders. Springer New York, 1989. http://dx.doi.org/10.1007/978-1-4612-3524-8_32.

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Keong, Jin, Boon Leong Lan, Einly Lim, Duy-Manh Le, and Shiuan-Ni Liang. "Control of Electrical and Calcium Alternans in a One-Dimensional Cardiac Cable." In Communications in Computer and Information Science. Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-99-7243-2_36.

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Actes de conférences sur le sujet "Onde calcio"

Flaten, Ellen Marie, Marion Seiersten, Ralf Beck, Charlotte Aanonsen, and Jens-Petter Andreassen. "Precipitation of Calcium Carbonate in Monoethylene Glycol and Water." In CORROSION 2014. NACE International, 2014. https://doi.org/10.5006/c2014-4047.

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Abstract Calcium carbonate is one of the most abundant minerals precipitating during gas production. This work is focused on precipitation of CaCO3 in presence of Monoethylene glycol (MEG), used as hydrate inhibitor. MEG is known to affect the thermodynamics of calcium carbonate and the results show that it also has a large impact on the precipitation kinetics. The whole precipitation process has been investigated including polymorphism, induction times, nucleation rates and growth rates. Emphasize has been on growth rate as it is most important and has a large impact on both induction time an

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Koutsoukos, Petros G., and Evangelia Kapetanaki. "Mixed Calcium Carbonate and Calcium Sulfate Scale." In CORROSION 2016. NACE International, 2016. https://doi.org/10.5006/c2016-07457.

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Abstract Crystallization fouling is one of the major problems in process industries using water. In the present work the precipitation of calcium carbonate (CaCO3), and of mixed calcium carbonate - calcium sulfate (CaSO4) deposits on the walls of a heated metal surface of stainless steel was investigated. All experiments were done at constant flow (2.3 ± 0.1 l/min), pressure and wall temperature (51± 1°C) using solutions either supersaturated with respect to calcium carbonate or both with respect to calcium carbonate and calcium sulfate. The kinetics of mineral deposition was monitored by the

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Flaten, Ellen Marie, Xiaoguang Ma, Marion Seiersten, Charlotte Aanonsen, Ralf Beck, and Jens-Petter Andreassen. "Impact of Monoethylene Glycol and Fe2+ on Crystal Growth of CaCO3." In CORROSION 2015. NACE International, 2015. https://doi.org/10.5006/c2015-05770.

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Abstract Calcium carbonate is one of the most abundant minerals precipitating during gas production. This work is focused on precipitation of CaCO3 in presence of Monoethylene glycol (MEG), used as hydrate inhibitor. MEG is known to affect the thermodynamics of calcium carbonate and this study shows that it has a large impact on the precipitation kinetics. The whole precipitation process has been investigated including polymorphism, induction times, nucleation rates and growth rates. Growth rate is emphasized as it has a large impact on both induction time and transformation rate from metastab

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Estievenart, C., N. Kohler, F. Ropital, and C. Fiaud. "Mechanisms of Scale and Corrosion Inhibition by Polyaspartates." In CORROSION 2004. NACE International, 2004. https://doi.org/10.5006/c2004-04536.

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Abstract Industrial cooling water systems will undergo more and more environmental constraints and the recycling of these waters will increase the risks of scale deposition and corrosion. The use of environmentally friendly chemical additives to inhibit these phenomena is necessary. Polyaspartates (PASP) have been proposed as potential green multifunctional inhibitors. Their inhibition efficiency on both the nucleation and growth of calcium carbonate (CaCO3) deposits and on the formation of corrosion products has been studied, under hydrodynamic conditions, by electrochemical techniques such a

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Sternhell, G., Paul D. Taylor, and D. Itzhak. "Galvanic Effects of Various Metallic Couples on Marine Biofouling in a Coral Reef Environment." In CORROSION 2002. NACE International, 2002. https://doi.org/10.5006/c2002-02183.

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Abstract Galvanic couples consisting rings of commercial copper, aluminum 6061 and brass 70Cu/30Zn were directly connected to the following metals plates: UNS S30403, S31603 and S31254 stainless steels, UNS R52400 and R53400 titanium alloys, zirconium 705, UNS N10276 nickel based super-alloys and commercial copper. The ring-plate couples were immersed in the coral reef environment in Red Sea, Eilat, at a depth of 6 meters for a period of one month during December 2000. X – ray diffraction of the metallic surfaces connected to aluminum 6061 rings detected enhanced electrochemical calcification

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Chang, Kelvin Y., Anne B. Austin, and Eric C. Ward. "A New All-In-One Polymer for Cooling Water Scale/Deposit Control." In CORROSION 2002. NACE International, 2002. https://doi.org/10.5006/c2002-02398.

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Abstract The concepts of water conservation and the stringent wastewater discharge regulations have dictated today's cooling water systems running at higher and higher cycles of concentration. Under such severe water conditions, scale/deposit control has become quite complicated involving a variety of scaling species. Categorically speaking, maleate based polymers/copolymers, along with phosphonates, are used to control calcium carbonate while sulfonate based polymers/copolymers are used to control calcium phosphate, iron, and other particulate. Presented here is a new single polymer designed

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Gill, J. S., and J. E. Meyer. "Chemical Treatment Optimization for Once-Through Cooling Waters." In CORROSION 1994. NACE International, 1994. https://doi.org/10.5006/c1994-94200.

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Abstract Once-through cooling systems, especially cooling lakes, generally operate at low calcium carbonate supersaturation and are easy to chemically treat for scale/deposit control. However, due to the large volume of water that must be cost effectively treated, chemical treatment optimization becomes extremely important. This paper discusses a laboratory procedure for optimization, a computer program for predicting optimum dose, and field verification using a test loop heat exchanger at a power plant. Due to short residence time and low supersaturation of the water, a constant composition t

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Raheem, Kabir, Olujide Sanni, Thibaut Charpentier, and Anne Neville. "Impact of Surface Conditions on Calcium Carbonate (CaCO3) Scaling Kinetics in a Once-Through Capillary Flow Rig." In CORROSION 2021. AMPP, 2021. https://doi.org/10.5006/c2021-16562.

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Abstract Mineral scale formation is one of the most common deleterious challenges in oil and gas production, restricting the steady flow of fluids. It poses major safety & operational issues and results in significant costs due to loss of production and remediation when not properly managed. Recent studies have shown that scaling processes on the surface are not necessarily a result of precipitation of crystals in the bulk solution and that they do not often share the same trends with regards to crystal growth kinetics and inhibition. Most of the past studies on scale deposition have focus

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Limpert, G. J. C., and J. L. Raber. "Tests of Non-Chemical Scale Control Devices in a Once-Through System." In CORROSION 1985. NACE International, 1985. https://doi.org/10.5006/c1985-85250.

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Abstract The writers conducted experiments in a test heat exchanger system to evaluate ten non-chemical scale and corrosion control devices. These devices are claimed to perform either by electrostatic, magnetic, electronic or catalytic mechanisms. Tests were also performed using chemicals to compare the results with non-chemical systems and to insure that the test conditions were not so severe that scale prevention was impossible. Water from a single deep well was used in all the tests. This water was known to cause calcium carbonate scale when heated. The test heat exchanger was a 2-tube she

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Paudyal, Samridhdi, and Chunfang Fan. "Development of Inorganic Scale Inhibitors for Ultrahigh-Temperatures Geothermal and HPHT Applications." In CONFERENCE 2024. AMPP, 2024. https://doi.org/10.5006/c2024-20727.

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Abstract With the advancement in green technology-based energy generation to achieve net-zero emissions, geothermal energy has been considered one of the options to reduce the carbon footprint from oil/gas production. In this paper, geothermal energy refers to energy generation that involves a high-pressure, high-temperature (HPHT) environment. Both geothermal energy generation and oil and gas production in such environments—which includes the use of steam-flooded wells and geothermal wells are always challenging as a result of operational issues caused by inorganic scale formation. Changes in

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Rapports d'organisations sur le sujet "Onde calcio"

Yompakdee, Chulee, and Warintorn Chavasiri. An active compound Kempferia parviflora with inhibitory activity against GSK-3 kinase implicated in type II Diabetes and Alzheimer's disease. Chulalongkorn University, 2015. https://doi.org/10.58837/chula.res.2015.37.

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Calcium signaling pathways play pivotal roles in regulation of various important biological processes in eukaryotes ranging from yeast to human. Because of the high degree in gene conservation from yeast to human, the small molecule inhibitors discovered in the yeast based-drug screening system can be expected to exert their function in human as well. The immunosuppressive agents, FK506 and cyclosporine A, are an example. Our previous studies using a zds1 yeast-based assay to search for inhibitors in the calcium signaling pathway in Saccharomyces cerevisae mutant strain from the crude extract

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Dettling, Mark, Diana Humple, Michael Mahoney, Mark Dettling, Diana Humple, and Michael Mahoney. Riparian landbird monitoring in Golden Gate National Recreation Area and Point Reyes National Seashore: Progress report for 2021?2023. National Park Service, 2024. http://dx.doi.org/10.36967/2305750.

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Point Blue Conservation Science (hereafter Point Blue) conducted landbird monitoring from 16 August 2021 through 15 August 2023 in predominantly riparian habitat found in Point Reyes National Seashore and Golden Gate National Recreation Area. This monitoring was on behalf of the National Park Service?s (NPS) Inventory and Monitoring (I&M) Program. Progress reports, like this one, are intended to document the survey efforts and to provide a basic summary of the data collected. This progress report deviates slightly from the structure of previous progress reports by summarizing two years of

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Pulgarín Díaz, John Alexander, Lucas Esteban Cano Gallego, and Angela Maria Arcila Cardona. Influence of liming on Cedrela odorata L. seedlings growth and attack by Hypsipyla grandella Zeller (Lepidoptera: Pyralidae). Corporación colombiana de investigación agropecuaria - AGROSAVIA, 2019. http://dx.doi.org/10.21930/agrosavia.poster.2019.25.

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Cedrela odorata is one of the most important commercial Neotropical forestry species, harvested mainly from natural forest, what have taken the species to danger of extinction. Its commercial plantation is limited by Hypsipyla grandella attacks, which could reach 100% of individuals in a forest plantation (Figure 1). Inverse relation of available calcium concentration in the soil for C. odorata and attacks of H. grandella had been reported (da Silva et al., 2009). Some studies indicate that calcium and boron addition to the soil has a positive e ect in height growth of Swietenia macrophylla (d

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Hinrichs, Claudia, and Judith Hauck. Report on skill of CMIP6 models to simulate alkalinity and improved parameterizations for large scale alkalinity distribution. OceanNets, 2022. http://dx.doi.org/10.3289/oceannets_d4.4.

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In part one of this deliverable, an ensemble of 14 CMIP6 Earth System Models is evaluated regarding their performance in simulating alkalinity and related parameters. The majority of the models and the multi-model-mean underestimate surface alkalinity compared to climatological observations. Alkalinity biases stemming from the parametrization of calcium carbonate formation and dissolution can be as big as biases stemming from model physics. In part two, we test the sensitivity of parametrizations concerning the carbonate chemistry in the FESOM2.1-REcoM3 and give recommendations for addressing

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Sink, Ken, Shamay Izhar, and Abraham Nachmias. Asymmetric Somatic Hybridization: Developing a Gene Transfer System for Solanaceous Vegetable Crops. United States Department of Agriculture, 1996. http://dx.doi.org/10.32747/1996.7613010.bard.

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Highly asymmetric somatic hybrid plants were obtained by PEG/DMSO fusion of gamma irradiated (100, 250, 7500 and 1000 Gy) protoplasts of a (KmR-) interspecific hybrid Lycopersicon esculentum x L. pennellii (EP) with protoplasts of eggplant (E). Somatic hybrid calli were selected based on kanamycin resistance and verified by PCR of the NptII gene, RAPD's and Southern's using potato rDNA pTHG2 probes. Flow cytometry indicated all hybrid calli that did not regenerate shoots were 5-9n. Three asymmetric plants regenerated only from callus close to 4n and such calli oly occurred when EP received 100

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Fromm, Hillel, and Joe Poovaiah. Calcium- and Calmodulin-Mediated Regulation of Plant Responses to Stress. United States Department of Agriculture, 1993. http://dx.doi.org/10.32747/1993.7568096.bard.

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We have taken a molecular approach to clone cellular targets of calcium/calmodulin (Ca2+/CaM). A 35S-labeled recombinant CaM was used as a probe to screen various cDNA expression libraries. One of the isolated clones from petunia codes for the enzyme glutamate decarboxylase (GAD) which catalyzes the conversion of glutamate to g-aminobutyric acid (GABA). The activity of plant GAD has been shown to be dramatically enhanced in response to cold and heat shock, anoxia, drought, mechanical manipulations and by exogenous application of the stress phytohormone ABA in wheat roots. We have purified the

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Scavuzzo, Sebastian, Jonathan Cedeño, and Jaroslava Miksovska. In Silico Calculation of Interhelical Angles in NCS1. Florida International University, 2025. https://doi.org/10.25148/fiuurj.3.1.16.

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Proteins are important macromolecules responsible for a variety of processes in living organisms. One of the most important features of proteins is their ability to respond to environmental stimuli, such as changes in intracellular metal concentration by binding metal ions, which in turns triggers structural changes within the protein that can modify its function or allow the protein to participate in a signaling pathway. One such signaling protein is the so-called neuronal calcium sensor 1 protein or NCS1, which binds Ca2+ along with other abiogenic metals such as Li+, and the metal binding r

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Navarro, Gaston, Juan Pavlo Nicolini, and Pedro Teles. Self-Fulfilling Debt Crises with Long Stagnations. Inter-American Development Bank, 2023. http://dx.doi.org/10.18235/0004743.

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We assess the quantitative relevance of expectations-driven sovereign debt crises, focusing on the Southern European crisis of the early 2010s and the Argentine default of 2001. The source of multiplicity is the one in Calvo (1988). Key for multiplicity is an output process featuring long periods of either high growth or stagnation that we estimate using data for those countries. We find that expectations-driven debt crises are quantitatively relevant but state dependent, as they only occur during stagnations. Expectations are a major driver explaining default rates and credit spread differenc

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Lavoie, D., V. Tremblay, and C. Rivard. Sandstone composition and diagenesis of the Paskapoo Formation and their significance for shallow groundwater aquifer in the Fox Creek area, west-central Alberta. Natural Resources Canada/CMSS/Information Management, 2023. http://dx.doi.org/10.4095/331923.

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The shallow aquifer in the Fox Creek area is hosted by the Paleocene Paskapoo Formation. The formation consists of fluvial deposits with channel-filled high-energy sandstone cutting through fine-grained, low energy overbank sediments. Three internal members are recognized, these members define three hydrostratigraphic units (two aquifers versus one aquitard). In fall 2022, three boreholes were drilled and cored. The succession is slightly dominated by sandstone with subordinate fine-grained sediments and thin coal intervals. The calcareous to non-calcareous sandstone is either tight and well c

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Rafaeli, Ada, Russell Jurenka, and Daniel Segal. Isolation, Purification and Sequence Determination of Pheromonotropic-Receptors. United States Department of Agriculture, 2003. http://dx.doi.org/10.32747/2003.7695850.bard.

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Moths constitute a major group of pest insects in agriculture. Pheromone blends are utilised by a variety of moth species to attract conspecific mates, which is under circadian control by the neurohormone, PBAN (pheromone-biosynthesis-activating neuropeptide). Our working hypothesis was that, since the emission of sex-pheromone is necessary to attract a mate, then failure to produce and emit pheromone is a potential strategy for manipulating adult moth behavior. The project aimed at identifying, characterising and determining the sequence of specific receptors responsible for the interaction w

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