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Articoli di riviste sul tema "Deactivation"

Autore: Grafiati

Pubblicato: 4 giugno 2021

Ultima modifica: 25 luglio 2025

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1

Persson, Jonas, Cindy Lustig, James K. Nelson, and Patricia A. Reuter-Lorenz. "Age Differences in Deactivation: A Link to Cognitive Control?" Journal of Cognitive Neuroscience 19, no. 6 (2007): 1021–32. http://dx.doi.org/10.1162/jocn.2007.19.6.1021.

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The network of regions shown by functional imaging studies to be deactivated by experimental tasks relative to nominally more passive baselines (task < baseline) may reflect processes engaged during the resting state or “default mode.” Deactivation may result when attention and resources are diverted from default-mode processes toward task processes. Aging is associated with altered patterns of deactivation which may be related to declining resources, difficulties with resource allocation, or both. These possibilities predict that greater task demand, which increases deactivation levels in

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2

Serdyukov, D. V., O. V. Kanunnikov, V. A. Akselrod, and N. G. Loyko. "Antimicrobial Properties of a Biocide Based on Quaternary Ammonium Compounds plus Polyhexamethylene Guanidine and Possible Methods of Its Deactivation." Biotekhnologiya 36, no. 6 (2020): 115–26. http://dx.doi.org/10.21519/0234-2758-2020-36-6-115-126.

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Biocidal agents (BA) are widely used in environmentally safe toilet complexes (ESTC) of passenger railcars to suppress microbial activity in fаecal sludge (FS). Subsequent disposal of BA-containing FS at municipal sewage treatment facilities adversely affects their work due to the loss of activated sludge. The antimicrobial properties of BA, based on quaternary ammonium compounds (QAC) and polyhexamethylene guanidine (PHMG), as well as methods for its neutralization, have been studied. It was confirmed that BA based on QAC and PHMG has an antimicrobial effect on various groups of bacteria, red

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3

Garner, Daniel, Matthew Blackburn, David J. Wright, and Archana Rao. "Improving guideline-mandated care of patients with implantable cardiac defibrillators." British Journal of Hospital Medicine 81, no. 8 (2020): 1–10. http://dx.doi.org/10.12968/hmed.2020.0259.

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Background/Aims Implantable cardiac defibrillators reduce the risk of sudden cardiac death in selected patients. The value of an implantable cardiac defibrillator declines as the patient's disease progresses. Guidelines suggest that the appropriateness of maintaining implantable cardiac defibrillator therapy be regularly reviewed as part of monitoring of the patient's disease trajectory. It is recommended that implantable cardiac defibrillators are deactivated as patients approach the end of life. Patients with a better understanding of their current state of health and the role that the impla

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Malhotra, Shveta, and Stephen G. Lomber. "Sound Localization During Homotopic and Heterotopic Bilateral Cooling Deactivation of Primary and Nonprimary Auditory Cortical Areas in the Cat." Journal of Neurophysiology 97, no. 1 (2007): 26–43. http://dx.doi.org/10.1152/jn.00720.2006.

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Although the contributions of primary auditory cortex (AI) to sound localization have been extensively studied in a large number of mammals, little is known of the contributions of nonprimary auditory cortex to sound localization. Therefore the purpose of this study was to examine the contributions of both primary and all the recognized regions of acoustically responsive nonprimary auditory cortex to sound localization during both bilateral and unilateral reversible deactivation. The cats learned to make an orienting response (head movement and approach) to a 100-ms broad-band noise stimulus e

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Jaklová, Karolína Dlasková, Lucie Šindelářová, Jan Kohout, Ivana Hradecká, Nikita Sharkov, and Aleš Vráblík. "Comparison of the Accelerated and Spontaneous Deactivation of the HDS Catalyst." Processes 9, no. 12 (2021): 2258. http://dx.doi.org/10.3390/pr9122258.

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Owing to the increased use of secondary materials for diesel production, refineries must confront bad quality parameters. Therefore, catalysts with certain capabilities (to remove heteroatoms and improve quality parameters at low hydrogen consumption) and their lifetimes are required. An important parameter that influences the quality of the products and the economy of the unit is the activity of the catalyst. Prior to industrial use, the catalyst is typically tested in a pilot unit. This is necessary to obtain a considerable amount of data on the lifetime of the catalyst in the shortest feasi

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6

Madre, M., E. Pomarol-Clotet, P. McKenna, et al. "Brain functional abnormality in schizo-affective disorder: an fMRI study." Psychological Medicine 43, no. 1 (2012): 143–53. http://dx.doi.org/10.1017/s0033291712000943.

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BackgroundSchizo-affective disorder has not been studied to any significant extent using functional imaging. The aim of this study was to examine patterns of brain activation and deactivation in patients meeting strict diagnostic criteria for the disorder.MethodThirty-two patients meeting Research Diagnostic Criteria (RDC) for schizo-affective disorder (16 schizomanic and 16 schizodepressive) and 32 matched healthy controls underwent functional magnetic resonance imaging (fMRI) during performance of the n-back task. Linear models were used to obtain maps of activations and deactivations in the

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7

Barker, Virgil M. "Deactivation of Pacemakers at the End of Life." Ethics & Medics 44, no. 9 (2019): 1–2. http://dx.doi.org/10.5840/em201944912.

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The liceity of deactivating pacemakers and implantable cardio-defibrillators at the end of life has been considered only recently. The current discussion divides into two main camps: those who view deactivation as the moral equivalent of the withdrawal of other life-sustaining interventions, and those who hold deactivation as the equivalent of physician-assisted suicide. Some authors contend that similar to a transplanted organ, the pacemaker establishes an organic unity with the human body. Hence, its deactivation is equivalent to the removal or disabling of an organ. On the contrary, the rel

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8

Grasso, Marco, and Daniel Delatin Rodrigues. "Sustainability Transitions Through Fossil Infrastructure Deactivation." Sustainability 17, no. 14 (2025): 6465. https://doi.org/10.3390/su17146465.

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This article reframes sustainability transitions by positioning the deliberate deactivation of fossil fuel infrastructures—such as coal plants, oil fields, and pipelines—as a central mechanism of systemic change. While prevailing approaches often emphasize renewable energy and innovation, they tend to neglect how existing fossil systems are actively maintained by powerful networks. We argue that sustainability transitions require not only building alternatives but also deactivating entrenched fossil infrastructures. To address this gap, we propose an analytical framework that conceptualizes de

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9

Wöhrl, Katharina, Yash Kotak, Christian Geisbauer, et al. "Analysis of Deactivation of 18,650 Lithium-Ion Cells in CaCl2, Tap Water and Demineralized Water for Different Insertion Times." Sensors 23, no. 8 (2023): 3901. http://dx.doi.org/10.3390/s23083901.

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The deployment of battery-powered electric vehicles in the market has created a naturally increasing need for the safe deactivation and recycling of batteries. Various deactivating methods for lithium-ion cells include electrical discharging or deactivation with liquids. Such methods are also useful for cases where the cell tabs are not accessible. In the literature analyses, different deactivation media are used, but none include the use of calcium chloride (CaCl2) salt. As compared to other media, the major advantage of this salt is that it can capture the highly reactive and hazardous molec

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10

Broering, J. M., and A. S. Bommarius. "Cation and strong co-solute effects on protein kinetic stability." Biochemical Society Transactions 35, no. 6 (2007): 1602–5. http://dx.doi.org/10.1042/bst0351602.

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Degradation of proteins is important for the operating life of biocatalysts and the shelf life of protein pharmaceuticals. We have previously found that the deactivating effects of salts on proteins can be correlated to an indicator of ion hydration, the B-viscosity coefficient of the anion in solution. Here, we test the influence of cations on protein kinetic stability by observing deactivation of mRFP (monomeric red fluorescent protein) in ammonium, caesium and chloride salt solutions, and we find that mRFP deactivation does not depend on cation hydration. We also measure mRFP deactivation i

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11

Harrisson, Simon. "The Chain Length Distribution of an Ideal Reversible Deactivation Radical Polymerization." Polymers 10, no. 8 (2018): 887. http://dx.doi.org/10.3390/polym10080887.

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The chain length distribution (CLD) of a reversible deactivation radical polymerization at full conversion is shown to be a negative binomial distribution with parameters that are simple functions of the number-average degree of polymerization and either the chain transfer constant (in the case of polymerizations that incorporate a reversible chain transfer step) or the concentrations of dormant polymer chains and deactivating agent and the rate constants of propagation and deactivation (other types of RDRP). Expressions for the CLD at intermediate conversions are also derived, and shown to be

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Vidal, Ana Cristina, Paula Banca, Augusto Gil Pascoal, Gustavo Cordeiro, João Sargento-Freitas, and Miguel Castelo-Branco. "Modulation of Cortical Interhemispheric Interactions by Motor Facilitation or Restraint." Neural Plasticity 2014 (2014): 1–8. http://dx.doi.org/10.1155/2014/210396.

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Cortical interhemispheric interactions in motor control are still poorly understood and it is important to clarify how these depend on inhibitory/facilitatory limb movements and motor expertise, as reflected by limb dominance. Here we addressed this problem using functional magnetic resonance imaging (fMRI) and a task involving dominant/nondominant limb mobilization in the presence/absence of contralateral limb restraint. In this way we could modulate excitation/deactivation of the contralateral hemisphere. Blocks of arm elevation were alternated with absent/present restraint of the contralate

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13

Hernandez-Ojeda, Jaime, and Pablo Requena. "Deactivating permanent pacemakers in pacemakerdependent patients with terminal illness: an ethical perspective." Medicina e Morale 72, no. 3 (2023): 313–27. http://dx.doi.org/10.4081/mem.2023.1245.

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Medical guidelines state that both implantable cardioverter defibrillator (ICD) and pacemaker deactivation may be ethically permissible when the patient requests their withdrawal based on the respect for the patient’s autonomy. However, they also state that most physicians make an ethical distinction between deactivating ICDs and deactivating permanent pacemakers in pacemaker-dependent patients, being reasonably uncomfortable when confronted with a petition for pacing deactivation in these patients. If a difference between both actions exists, what principles explain this ethical distinction?

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Šima, Jozef. "(Non)luminescent properties of iron compounds." Acta Chimica Slovaca 8, no. 2 (2015): 126–32. http://dx.doi.org/10.1515/acs-2015-0022.

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Abstract This mini-review evaluates deactivation processes of iron-containing species and substances in solutions and the solid state with the focus on radiation deactivations from their electronically excited states. Theoretical and practical aspects of luminescence are assessed and conclusions based on up-to-date experimental data are formulated.

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Landin-Romero, R., P. J. McKenna, P. Salgado-Pineda, et al. "Failure of deactivation in the default mode network: a trait marker for schizophrenia?" Psychological Medicine 45, no. 6 (2014): 1315–25. http://dx.doi.org/10.1017/s0033291714002426.

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Background.Functional imaging studies in relatives of schizophrenic patients have had inconsistent findings, particularly with respect to altered dorsolateral prefrontal cortex activation. Some recent studies have also suggested that failure of deactivation may be seen.Method.A total of 28 patients with schizophrenia, 28 of their siblings and 56 healthy controls underwent functional magnetic resonance imaging during performance of the n-back working memory task. An analysis of variance was fitted to individual whole-brain maps from each set of patient–relative–matched pair of controls. Cluster

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Guerrero-Pedraza, A., P. J. McKenna, J. J. Gomar, et al. "First-episode psychosis is characterized by failure of deactivation but not by hypo- or hyperfrontality." Psychological Medicine 42, no. 1 (2011): 73–84. http://dx.doi.org/10.1017/s0033291711001073.

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BackgroundIt is not known whether first-episode psychosis is characterized by the same prefrontal cortex functional imaging abnormalities as chronic schizophrenia.MethodThirty patients with a first episode of non-affective functional psychosis and 28 healthy controls underwent functional magnetic resonance imaging (fMRI) during performance of the n-back working memory task. Voxel-based analyses of brain activations and deactivations were carried out and compared between groups. The connectivity of regions of significant difference between the patients and controls was also examined.ResultsThe

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P, Kudryavtsev. "Development of decontamination and detergents for the nuclear industry." International Journal of Hydrology 5, no. 4 (2021): 192–200. http://dx.doi.org/10.15406/ijh.2021.05.00280.

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At the enterprises of the radiochemical industry in the world, the task is to clean the technological and research equipment, overalls, and personnel from contamination with radioactive products. This task is especially relevant in case of emergencies, for example, such as an accident at a nuclear power plant in Fukushima, Japan. A review of the deactivation methods currently used is reviewed. It has been shown that the most typical pollutants are mixtures of radionuclides 137Cs, 144Ce, 144Pr, 90Sr, and 239Pu. All these elements are prone to the formation of chelate complexes. Therefore, compl

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18

Anuwongnukroh, Niwat, Surachai Dechkunakorn, Nathaphon Tangit, and Subongkoch Tongkoom. "Effect of Temperature on Deactivation Force of Three Commercial NiTi Orthodontic Archwires." Advanced Materials Research 1025-1026 (September 2014): 325–29. http://dx.doi.org/10.4028/www.scientific.net/amr.1025-1026.325.

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Objective: The purpose of this study was to investigate the transition temperature range (TTR) and the effect of temperatures at 10, 20, 30, 40, 50 and 60 °C on the deactivation force of three commercially available NiTi archwires. Materials and methods: Three different brands of NiTi archwires, NiTi OR (Ormco), NiTi GH (G&H) and NiTi H (Highland), with a cross sectional area of 0.016 x 0.022 inch2 were analysed for transformation temperature range (TTR) by using differential scanning calorimeter and load-deflection characteristics using a three-point bending test at temperatures of 10, 20

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Prozorov, Dmitriy, Andrey Afineevskiy, Elizaveta Pokrovskaya, Kirill Nikitin, and Ruslan Shehanov. "Liquid-phase hydrogenation of sodium 4-nitrophenolate under conditions of nickel catalyst partial deactivation." From Chemistry Towards Technology Step-By-Step 5, no. 4 (2024): 142–48. https://doi.org/10.52957/2782-1900-2024-5-4-142-148.

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The paper investigates the activity of a skeletal nickel catalyst upon its partial controlled deactivation in the liquid-phase hydrogenation reaction of sodium 4 nitrophenolate. The reaction proceeds in aqueous solutions of sodium hydroxide at 303 K and atmospheric hydrogen pressure in a batch reactor. An aqueous solution of sodium sulphide with pH equal to the hydrogen value of the solvent in the reactor was a deactivating agent. We used the Bartholomew C.G. technique to assess the nature of the catalyst deactivation. Using this technique, we determined the number of active nickel atoms block

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Vicini, Stefano, Jian Feng Wang, Jin Hong Li, et al. "Functional and Pharmacological Differences Between RecombinantN-Methyl-d-Aspartate Receptors." Journal of Neurophysiology 79, no. 2 (1998): 555–66. http://dx.doi.org/10.1152/jn.1998.79.2.555.

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Vicini, Stefano, Jian Feng Wang, Jin Hong Li, Wei Jian Zhu, Yue Hua Wang, Jian Hong Luo, Barry B. Wolfe, and Dennis R. Grayson. Functional and pharmacological differences between recombinant N-methyl-d-aspartate receptors. J. Neurophysiol. 79: 555–566, 1998. N-methyl-d-aspartic acid (NMDA) receptors transiently transfected into mammalian HEK-293 cells were characterized with subunit-specific antibodies and electrophysiological recordings. Deactivation time course recorded in response to fastl-glutamate pulses were studied in isolated and lifted cells, as well as in outside-out membrane patches

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Al Emam, Abdel R., David Barton, John Um, and Gregory Pavlides. "Valve in Valve Trans-Catheter Aortic Valve Replacement Followed by LVAD Deactivation in the Setting of Recovered Systolic Function." Current Cardiology Reviews 16, no. 1 (2020): 77–80. http://dx.doi.org/10.2174/1573403x15666190509082833.

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Background: Advanced heart failure has an extremely high mortality withoAdvanced heart failure has extremely high mortality without advanced therapies (left ventricular assist device (LVAD) implantation or cardiac transplant). LVAD patients with bioprosthetic aortic valve are more prone to leaflet fusion resulting in valvular stenosis and regurgitation.ut advanced therapies like Left ventricular assist devices or cardiac transplant. LVAD patients with bioprosthetic aortic valve are more prone to leaflet fusion resulting in valvular stenosis and regurgitation. We present a 46 year old patient w

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22

Lee, Nankyu, Jinil Park, Jonghwa Lee, Kyoungseok Park, Myoungsik Choi, and Wongyu Kim. "Estimation of Fuel Economy Improvement in Gasoline Vehicle Using Cylinder Deactivation." Energies 11, no. 11 (2018): 3084. http://dx.doi.org/10.3390/en11113084.

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Cylinder deactivation is a fuel economy improvement technology that has attracted particular attention recently. The currently produced cylinder deactivation engines utilize fixed-type cylinder deactivation in which only a fixed number of cylinders are deactivated. As fixed-type cylinder deactivation has some shortcomings, variable-type cylinder deactivation with no limit on the number of deactivated cylinders is under research. For variable-type cylinder deactivation, control is more complicated and production cost is higher than fixed-type cylinder deactivation. Therefore, it is necessary to

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Thanavaro, Joanne L. "ICD Deactivation." Clinical Nursing Research 22, no. 1 (2012): 36–50. http://dx.doi.org/10.1177/1054773812443893.

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Forzatti, P. "Catalyst deactivation." Catalysis Today 52, no. 2-3 (1999): 165–81. http://dx.doi.org/10.1016/s0920-5861(99)00074-7.

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Hansen, N. R., and H. L. Schreyer. "Damage Deactivation." Journal of Applied Mechanics 62, no. 2 (1995): 450–58. http://dx.doi.org/10.1115/1.2895951.

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A phenomenological algorithm, motivated by the “mode I” microcrack opening and closing mechanism, is developed for the deactivation and reactivation of the damage effects as modeled by certain continuum damage mechanics theories. One-dimensional formulations with and without coupled plasticity are used to elucidate concepts associated with damage deactivation and to suggest multidimensional deactivation formulations applicable to continuum damage theories that employ a second-order tensor as the damage measure. Strain-based projection operators are used to deactivate the damage effects in the

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Sadana, Ajit. "Enzyme deactivation." Biotechnology Advances 6, no. 3 (1988): 349—IN2. http://dx.doi.org/10.1016/0734-9750(88)91890-3.

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Henley, James P., and Ajit Sadana. "Deactivation theory." Biotechnology and Bioengineering 28, no. 8 (1986): 1277–85. http://dx.doi.org/10.1002/bit.260280821.

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Bond, G. C. "Catalyst deactivation." Applied Catalysis 37 (January 1988): 359. http://dx.doi.org/10.1016/s0166-9834(00)80790-3.

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Layus, G. "The Event of Deactivation and Deactivation of Event." Versus 3, no. 2 (2023): 114–50. http://dx.doi.org/10.58186/2782-3660-2023-3-2-114-150.

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The paper addresses the notion of the messianic event in the philosophical project of Giorgio Agamben. The central reference for this paper is the book The Time that Remains: A Commentary on the Letter to the Romans, in which the Italian philosopher proposes his conception of messianism. The central event that lies at the foundation of this conception is the event of deactivation of the apparatus of law, which introduces the time of anomia. Based on a close reading of The Time that Remains, the author singles out three key features of the messianic event: 1) This event has already taken place

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Gromotka, Zoë, Gregory Yablonsky, Nickolay Ostrovskii, and Denis Constales. "Three-Factor Kinetic Equation of Catalyst Deactivation." Entropy 23, no. 7 (2021): 818. http://dx.doi.org/10.3390/e23070818.

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The three-factor kinetic equation of catalyst deactivation was obtained in terms of apparent kinetic parameters. The three factors correspond to the main cycle with a linear, detailed mechanism regarding the catalytic intermediates, a cycle of reversible deactivation, and a stage of irreversible deactivation (aging), respectively. The rate of the main cycle is obtained for the fresh catalyst under a quasi-steady-state assumption. The phenomena of reversible and irreversible deactivation are presented as special separate factors (hierarchical separation). In this case, the reversible deactivati

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Pasqualotto, C. V., C. M. Bastiani, I. Zoldan, et al. "Deoxinivalenol deactivation in wheat grains treated with ammonia gas and its effect on Rattus norvegicus diet." Arquivo Brasileiro de Medicina Veterinária e Zootecnia 75, no. 6 (2023): 1165–70. http://dx.doi.org/10.1590/1678-4162-12962.

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ABSTRACT Fusarium head blight, also known as fusariosis, is caused by a fungus called Fusarium graminearum that produces the mycotoxin deoxynivalenol (DON). This toxin causes problems to human and animal health. Ammonia gas has been shown to be effective in deactivating mycotoxins. The objectives of this study were to evaluate the effectiveness of ammonia gas in the deactivation of DON in wheat grains, the effect of this treatment on its protein composition and the toxicity in rats fed with ammoniated wheat grains. Wheat samples were exposed to ammonia gas at concentrations of 0% (Control), 0.

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Garoma, T., and J. Kocher. "Investigation of surfactant-modified activated carbon for recycled water disinfection." Water Science and Technology 62, no. 8 (2010): 1755–66. http://dx.doi.org/10.2166/wst.2010.458.

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This study investigated the effectiveness of surfactant-loaded granular activated carbon (GAC) to deactivate total coliform, E. coli, and enterococci found in tertiary effluent under various experimental conditions, i.e. varying surfactant dose, GAC dose, and contact time. The results indicate that GAC loaded with 100 mg/g of hexadecyltrimethylammonium bromide (CTAB) and didodecyldimethylammonium bromide (DDAB), achieved log reductions as high as 1.02 and 1.86 of total coliform, respectively. At varying GAC doses and contact times, 200 mg/g of DDAB dose achieved 99.9 to 100% reduction in total

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Kahana, Alon, Phyllis R. Robinson, Laura J. Lewis, Ete Z. Szuts, and John E. Lisman. "ATP-independent deactivation of squid rhodopsin." Visual Neuroscience 9, no. 6 (1992): 595–602. http://dx.doi.org/10.1017/s0952523800001838.

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AbstractDeactivation of light-activated squid rhodopsin was studied in vitro using GTPγS binding by G-protein as a direct measure of rhodopsin activity. Deactivation was inhibited by dilution of the retinal suspension or by removal of soluble components. Deactivation could be restored by addition of soluble material to washed membranes. These results indicate that the deactivation is not due entirely to a conformational transition within rhodopsin itself, but depends on the interaction with other molecules. The possibility that phosphorylation is involved in the deactivation was studied. Deact

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Roshanaei, Abbas, and Mehdi Alavi. "Kinetic study of propane aromatization over Zn/HZSM-5 zeolite under conditions of catalyst deactivation using genetic algorithm." Journal of the Serbian Chemical Society 83, no. 4 (2018): 473–88. http://dx.doi.org/10.2298/jsc170621007r.

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The kinetic studies of propane aromatization reaction over Zn/ /HZSM-5 catalyst at temperature of 500?560?C and space velocity of 500?2500 cm3 gcat -1 h-1, in a plug flow reactor, under catalyst deactivating conditions were performed. A lumped kinetic model consisting of six lumped components and six reaction steps was proposed to describe the aromatization of propane. The kinetic model involves 18 kinetic parameters and one catalyst deactivation constant. The reaction steps orders were obtained by the power law model. Frequency factors and the apparent activation energies of the reaction step

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McGhee, Michael, Ziman Wang, Alexander Bech, Paul J. Shayler, and Dennis Witt. "The effects of cylinder deactivation on the thermal behaviour and fuel economy of a three-cylinder direct injection spark ignition gasoline engine." Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering 233, no. 11 (2018): 2838–49. http://dx.doi.org/10.1177/0954407018806744.

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The changes in thermal state, emissions and fuel economy of a 1.0-L, three-cylinder direct injection spark ignition engine when a cylinder is deactivated have been explored experimentally. Cylinder deactivation improved engine fuel economy by up to 15% at light engine loads by reducing pumping work, raising indicated thermal efficiency and raising combustion efficiency. Penalties included an increase in NOx emissions and small increases in rubbing friction and gas work losses of the deactivated cylinder. The cyclic pressure variation in the deactivated cylinder falls rapidly after deactivation

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Standing, Holly, Richard G. Thomson, Darren Flynn, et al. "‘You can’t start a car when there’s no petrol left’: a qualitative study of patient, family and clinician perspectives on implantable cardioverter defibrillator deactivation." BMJ Open 11, no. 7 (2021): e048024. http://dx.doi.org/10.1136/bmjopen-2020-048024.

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ObjectiveTo explore the attitudes towards implantable cardioverter defibrillator (ICD) deactivation and initiation of deactivation discussions among patients, relatives and clinicians.DesignA multiphase qualitative study consisting of in situ hospital ICD clinic observations, and semistructured interviews of clinicians, patients and relatives. Data were analysed using a constant comparative approach.SettingOne tertiary and two district general hospitals in England.ParticipantsWe completed 38 observations of hospital consultations prior to ICD implantation, and 80 interviews with patients, fami

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Fardin, J. Igor. "The Politics of Play: Ugo La Pietra's Design Without Ends." Design Issues 39, no. 3 (2023): 19–29. http://dx.doi.org/10.1162/desi_a_00723.

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Abstract This article investigates the potential of play for design practice and theory. First, drawing on the works of linguist Emile Benveniste and philosopher Giorgio Agamben, I propose a theoretical understanding of play as an act capable of suspending and deactivating means-end relations. Second, I articulate what this deactivating potential of play entails for the field of design through close readings of a series of works by Italian architect, artist, and designer Ugo La Pietra. In doing so, I uncover the politics that this deactivation within design seems to point towards—a politics of

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Pomarol-Clotet, E., R. Salvador, S. Sarró, et al. "Failure to deactivate in the prefrontal cortex in schizophrenia: dysfunction of the default mode network?" Psychological Medicine 38, no. 8 (2008): 1185–93. http://dx.doi.org/10.1017/s0033291708003565.

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BackgroundFunctional imaging studies using working memory tasks have documented both prefrontal cortex (PFC) hypo- and hyperactivation in schizophrenia. However, these studies have often failed to consider the potential role of task-related deactivation.MethodThirty-two patients with chronic schizophrenia and 32 age- and sex-matched normal controls underwent functional magnetic resonance imaging (fMRI) scanning while performing baseline, 1-back and 2-back versions of the n-back task. Linear models were used to obtain maps of activations and deactivations in the groups.ResultsThe controls showe

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Lomber, Stephen G., Shveta Malhotra, and James M. Sprague. "Restoration of Acoustic Orienting Into a Cortically Deaf Hemifield by Reversible Deactivation of the Contralesional Superior Colliculus: The Acoustic “Sprague Effect”." Journal of Neurophysiology 97, no. 2 (2007): 979–93. http://dx.doi.org/10.1152/jn.00767.2006.

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Removal of all contiguous visual cortical areas of one hemisphere results in a contralateral hemianopia. Subsequent deactivation of the contralesional superior colliculus (SC) nullifies the effects of the visual cortex ablation and restores visual orienting responses into the cortically blind hemifield. This deficit nullification has become known as the “Sprague Effect.” Similarly, in the auditory system, unilateral ablation of auditory cortex results in severe sound localization deficits, as assessed by acoustic orienting, to stimuli in the contralateral hemifield. The purpose of this study w

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40

Davey, Stephen G. "Deciphering digoxin deactivation." Nature Reviews Chemistry 2, no. 7 (2018): 98. http://dx.doi.org/10.1038/s41570-018-0017-7.

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Guardiola, J., M. Proctor, H. Li, R. Punnakkattu, S. Lin, and J. Yu. "Airway mechanoreceptor deactivation." Journal of Applied Physiology 103, no. 2 (2007): 600–607. http://dx.doi.org/10.1152/japplphysiol.01286.2006.

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Airway sensors play an important role in control of breathing. Recently, it was found that pulmonary slowly adapting stretch receptors (SARs) cease after a brief excitation following sodium pump blockade by ouabain. This deactivation can be explained by overexcitation. If this is true, mechanical stimulation of the SARs should also lead to a deactivation. In this study, we recorded unit activity of the SARs in anesthetized, open-chest, and mechanically ventilated rabbits and examined their responses to lung inflation at different constant pressures. Forty-seven of 137 units had a clear deactiv

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Roncolatto, Rodolfo Eugênio, Mauri J. B. Cardoso, Yiu Lau Lam, and M. Schmal. "FCC SOxAdditives Deactivation." Industrial & Engineering Chemistry Research 45, no. 8 (2006): 2646–50. http://dx.doi.org/10.1021/ie0511985.

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Hetem, M., G. Rutten, B. Vermeer, et al. "Deactivation with polymethylhydrosiloxane." Journal of Chromatography A 477, no. 1 (1989): 3–24. http://dx.doi.org/10.1016/s0021-9673(01)89614-x.

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44

Sadana, Ajit, and James P. Henley. "Deactivation-disguised kinetics." Journal of Biotechnology 5, no. 1 (1987): 67–76. http://dx.doi.org/10.1016/0168-1656(87)90071-x.

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45

Gustina, Ahleah S., and Matthew C. Trudeau. "hERG potassium channel gating is mediated by N- and C-terminal region interactions." Journal of General Physiology 137, no. 3 (2011): 315–25. http://dx.doi.org/10.1085/jgp.201010582.

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Abstract (sommario):

Human ether-á-go-go–related gene (hERG) potassium channels have voltage-dependent closing (deactivation) kinetics that are unusually slow. A Per-Arnt-Sim (PAS) domain in the cytoplasmic N-terminal region of hERG regulates slow deactivation by making a direct interaction with another part of the hERG channel. The mechanism for slow deactivation is unclear, however, because the other regions of the channel that participate in regulation of deactivation are not known. To identify other functional determinants of slow deactivation, we generated hERG channels with deletions of the cytoplasmic C-ter

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Al-Shafei, Mansour A., Ahmed K. Al-Asseel, Abdulhadi M. Adab, Hasan A. Al-Jama, Amer A. Al-Tuwailib, and Shouwen X. Shen. "Deactivation Mechanism of Titania Catalyst." Journal of Materials Science Research 5, no. 4 (2016): 22. http://dx.doi.org/10.5539/jmsr.v5n4p22.

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Abstract (sommario):

<p class="1Body">Catalyst deactivation is a well-recognized phenomenon in the petroleum and chemical processing industries. Identifying the root causes of this phenomenon is an important factor for enhancing catalyst efficiency and preventing undesirable failures. In this study, state-of-the-art instruments were utilized to investigate the causes of catalyst deactivation that led to the replacement of the catalyst bed in one of the sulfur recovery units at a Saudi Aramco gas plant. Titania catalysts have been examined to determine the inherent deactivation mechanism and also to find out

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Lysne, Ask, Ida Saxrud, Kristin Ø. Madsen, and Edd A. Blekkan. "Steam Reforming of Tar Impurities from Biomass Gasification with Ni-Co/Mg(Al)O Catalysts—Operating Parameter Effects." Fuels 5, no. 3 (2024): 458–75. http://dx.doi.org/10.3390/fuels5030025.

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Abstract (sommario):

The elimination of tar impurities from biomass gasification by catalytic steam reforming can provide clean syngas for downstream biofuel synthesis (Fischer–Tropsch). The effects of key operating parameters in CH4/tar steam reforming were investigated. Ni-Co/Mg(Al)O catalyst performance was tested at model conditions (10/35/25/25/5 wt% CH4/H2/CO/CO2/N2), changing the temperature (650–800 °C), steam-to-carbon ratio (2–5), tar loading (10–30 g/Nm3), and tar composition (toluene, 1-methylenaphthalene, and phenol). Complete tar elimination was achieved under all conditions, at the expense of cataly

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Ostrovski, Nikolaj, Svetlana Rovenskaja, and Genadij Echevski. "Aromatization of light naphtha fractions on zeolites: 2. Model of catalyst deactivation." Chemical Industry 58, no. 3 (2004): 104–8. http://dx.doi.org/10.2298/hemind0403104o.

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Abstract (sommario):

A model of catalyst deactivation in the "Zeoforming" process was developed. The deactivation rate constants and activation energies were estimated. The role of adsorbed oligomers in the reaction and the deactivation kinetics were examined. The model is intended for further modeling and optimization of the process.

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Paimon, Ahmad Solehin, Wira Jazair, and Srithar Rajoo. "Parametric Study of Cylinder Deactivation and Valve Deactivation for Unthrottled Operation." Advanced Materials Research 614-615 (December 2012): 525–28. http://dx.doi.org/10.4028/www.scientific.net/amr.614-615.525.

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Abstract (sommario):

Cylinder deactivation (CDA) as well as valve deactivation (VDA) technologies provides big potentials to decrease fuel consumption and emission at part load operation for SI engine. In real driving situation, an internal combustion engine operates in transient operation where the load and speed varies continuously. This part load operation leads the engine to have poor fuel consumption and emission due to throttle pumping losses. This paper will investigate the further potential of both induction strategy, cylinder deactivation and valve deactivation in extending the fuel economy at part load.

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Shi, Yu Patrick, Samrat Thouta, Yen May Cheng, and Tom W. Claydon. "Extracellular protons accelerate hERG channel deactivation by destabilizing voltage sensor relaxation." Journal of General Physiology 151, no. 2 (2018): 231–46. http://dx.doi.org/10.1085/jgp.201812137.

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Abstract (sommario):

hERG channels underlie the delayed-rectifier K+ channel current (IKr), which is crucial for membrane repolarization and therefore termination of the cardiac action potential. hERG channels display unusually slow deactivation gating, which contributes to a resurgent current upon repolarization and may protect against post-depolarization–induced arrhythmias. hERG channels also exhibit robust mode shift behavior, which reflects the energetic separation of activation and deactivation pathways due to voltage sensor relaxation into a stable activated state. The mechanism of relaxation is unknown and

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