Relevant bibliographies by topics / HSD deactivation

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  1. Journal articles
  2. Dissertations / Theses
  3. Book chapters
  4. Conference papers

Academic literature on the topic 'HSD deactivation'

Author: Grafiati
Published: 4 June 2021
Last updated: 1 February 2022

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Journal articles on the topic "HSD deactivation"

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Hundertmark, S., H. Buhler, M. Rudolf, HK Weitzel, and V. Ragosch. "Inhibition of 11 beta-hydroxysteroid dehydrogenase activity enhances the antiproliferative effect of glucocorticosteroids on MCF-7 and ZR-75-1 breast cancer cells." Journal of Endocrinology 155, no. 1 (1997): 171–80. http://dx.doi.org/10.1677/joe.0.1550171.

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This in vitro study on MCF-7 and ZR-75-1 breast cancer cells showed that the antiproliferative action of glucocorticosteroids (GCS) on breast cancer cells is weakened by a high oxidative activity of 11 beta-hydroxysteroid dehydrogenase (11 beta-HSD; EC 1.1.1.146): both endogenic as well as synthetic GCS (dexamethasone, prednisolone) were metabolised to hormonally inactive 11-dehydro metabolites. This enzymatic shield protected the breast cancer cells from the antiproliferative action of GCS. Continuous exposure of breast cancer cells to GCS resulted in enhanced 11 beta-HSD activity. The intrac
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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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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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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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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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Mahadevan, Ravishankar, Sushil Adhikari, Rajdeep Shakya, and Oladiran Fasina. "Influence of Biomass Inorganics on the Functionality of H+ZSM-5 Catalyst during In-Situ Catalytic Fast Pyrolysis." Catalysts 11, no. 1 (2021): 124. http://dx.doi.org/10.3390/catal11010124.

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In this study, the contamination of H+ZSM-5 catalyst by calcium, potassium and sodium was investigated by deactivating the catalyst with various concentrations of these inorganics, and the subsequent changes in the properties of the catalyst are reported. Specific surface area analysis of the catalysts revealed a progressive reduction with increasing concentrations of the inorganics, which could be attributed to pore blocking and diffusion resistance. Chemisorption studies (NH3-TPD) showed that the Bronsted acid sites on the catalyst had reacted with potassium and sodium, resulting in a clear
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Jiang, Wan, Mark T. Wallace, Huai Jiang, J. William Vaughan, and Barry E. Stein. "Two Cortical Areas Mediate Multisensory Integration in Superior Colliculus Neurons." Journal of Neurophysiology 85, no. 2 (2001): 506–22. http://dx.doi.org/10.1152/jn.2001.85.2.506.

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The majority of multisensory neurons in the cat superior colliculus (SC) are able to synthesize cross-modal cues (e.g., visual and auditory) and thereby produce responses greater than those elicited by the most effective single modality stimulus and, sometimes, greater than those predicted by the arithmetic sum of their modality-specific responses. The present study examined the role of corticotectal inputs from two cortical areas, the anterior ectosylvian sulcus (AES) and the rostral aspect of the lateral suprasylvian sulcus (rLS), in producing these response enhancements. This was accomplish
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Seki, Hiroyuki, and Masao Yoshimoto. "Deactivation of HDS catalyst in two-stage RDS process." Fuel Processing Technology 69, no. 3 (2001): 229–38. http://dx.doi.org/10.1016/s0378-3820(00)00143-0.

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Kubička, David, and Jan Horáček. "Deactivation of HDS catalysts in deoxygenation of vegetable oils." Applied Catalysis A: General 394, no. 1-2 (2011): 9–17. http://dx.doi.org/10.1016/j.apcata.2010.10.034.

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Vogelaar, Bas M., Petr Steiner, Thomas F. van der Zijden, A. Dick van Langeveld, Sonja Eijsbouts, and Jacob A. Moulijn. "Catalyst deactivation during thiophene HDS: The role of structural sulfur." Applied Catalysis A: General 318 (February 2007): 28–36. http://dx.doi.org/10.1016/j.apcata.2006.10.032.

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Dissertations / Theses on the topic "HSD deactivation"

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Steiner, Petr. "Kinetic and Deactivation Studies of Hydrodesulfurization Catalysts." Doctoral thesis, Norwegian University of Science and Technology, Department of Chemical Engineering, 2002. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-94.

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<p>Hydrodesulfurization is an important part of the hydrotreating process. More stringent regulations on the quality of fuels bring new requirements to the catalytic processes. The removal of sulfur has become a key issue in the oil refining and this work aims to address several aspects of the process.</p><p>Kinetic studies of the hydrodesulfurization reaction over conventional (molybdenum-based) and new (Pt/Y-zeolite) catalysts are reported. The hydrodesulfurization of both the real oil (light gas oil from Statoil Mongstad refinery) and model compounds (thiophene and dibenzothiophene) over a
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Book chapters on the topic "HSD deactivation"

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Marinkoviae^Neduein, R., E. Kis, M. Duriae, G. Boskoviae, J. Kiurski, and R. Miatiae. "Deactivation of HDS catalysts." In Recent Advances In Basic and Applied Aspects of Industrial Catalysis, Proceedings of 13th National Symposium and Silver Jubilee Symposium of Catalysis of India. Elsevier, 1998. http://dx.doi.org/10.1016/s0167-2991(98)80313-3.

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Ihm, Son-Ki, Do-Woan Kim, and Dong-Keun Lee. "Effects of sulfidation of Mo nitride and CoMo nitride catalysts on thiophene HDS." In Catalyst Deactivation, Proceedings of the 7th International Symposium. Elsevier, 1997. http://dx.doi.org/10.1016/s0167-2991(97)80173-5.

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Arteaga, A., J. L. G. Fierro, P. Grange, and B. Delmon. "CoMo HDS Catalysts : Simulated Deactivation and Regeneration. Role of Various Regeneration Parameters." In Studies in Surface Science and Catalysis. Elsevier, 1987. http://dx.doi.org/10.1016/s0167-2991(09)60351-7.

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Pedraza, F., S. Fuentes, M. Vrinat, and M. Lacroix. "Deactivation of MoS2 catalysts during the HDS of thiophene. Effect of nickel promoter." In Studies in Surface Science and Catalysis. Elsevier, 2000. http://dx.doi.org/10.1016/s0167-2991(00)80906-4.

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Trejo, J. M., and F. Albertos. "Development of a method for the study of the deactivation of HDS catalysts." In Studies in Surface Science and Catalysis. Elsevier, 2000. http://dx.doi.org/10.1016/s0167-2991(00)80908-8.

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Vogelaar, Bas M., Petr Steiner, A. Dick Van Langeveld, Sonja Eijsbouts, and Jacob A. Moulijn. "67 Activity and deactivation of HDS catalysts: Studying the active phase using CO as a probe molecule." In Science and Technology in Catalysis 2002, Proceedings of the Fourth Tokyo conference on Advance Catalytic Science and Technology. Elsevier, 2003. http://dx.doi.org/10.1016/s0167-2991(03)80224-0.

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Conference papers on the topic "HSD deactivation"

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Kawasaki, Toru, Motohiro Aizawa, Hidehiro Iizuka, Koji Yamada, and Mitsuo Kugimoto. "Investigations and Countermeasures for Deactivation of the Hydrogen Recombination Catalyst at Hamaoka Unit 4 and 5." In 18th International Conference on Nuclear Engineering. ASMEDC, 2010. http://dx.doi.org/10.1115/icone18-29155.

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At Hamaoka Unit 4 and 5, the hydrogen concentration in the outlet of off-gas recombiner had increased, and the reactors could not continue start-up operation. Therefore, we investigated the causes of the deactivating the recombination reaction and selected appropriate countermeasures to the plants. From our investigation, two types of deactivation mechanism are found. One of the causes was decreasing the active surface area of alumina as support material by the dehydrative condensation. The other cause was poisoning of the catalyst by organic silicon compound. The organic silicon was introduce
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Klinghoffer, Naomi, and Marco J. Castaldi. "Deactivation and Energy Analysis of Char Catalysts in Biomass Gasification Systems." In 20th Annual North American Waste-to-Energy Conference. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/nawtec20-7036.

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One of the major barriers to gasification is the need for elimination of tars that are generated in thermochemical conversion processes. While metal catalysts can be used for tar decomposition, and cheaper alternative is char. Deactivation of char catalysts has been studied and these deactivation rates have been applied to a model for a gasification system. The calculations and experimental data presented here show that if the char from a gasifier is recycled to a tar reformer then some char deactivation will take place, but the activity will not fall below 40% of its initial activity. The ene
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Bond, Gary, A. Halman, H. Eccles, et al. "A COMPARATIVE STUDY OF MICROWAVE AND BARRIER DISCHARGE PLASMA FOR THE REGENERATION OF SPENT ZEOLITE CATALYSTS." In Ampere 2019. Universitat Politècnica de València, 2019. http://dx.doi.org/10.4995/ampere2019.2019.9936.

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Due to their acid characteristics and pore structure, which can induce high product selectivity; zeolite catalysts are used extensively in industry to catalyse reactions involving hydrocarbons. However, these catalysts can suffer from deactivation due to cracking reactions that result in the deposition of carbon leading to poisoning of the acid sites and blocking of the pores [1]. Depending upon the reaction and the particular catalyst involved this deactivation may take place over several months or even years but in some cases occurs in minutes. Therefore, zeolite catalysts are frequently rea
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Joshi, Satyum, Mufaddel Dahodwala, Erik Koehler, and Michael Franke. "Engine Strategies to Meet Phase-2 Greenhouse Gas Emission Legislation for Heavy-Duty Diesel Engines." In ASME 2017 Internal Combustion Engine Division Fall Technical Conference. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/icef2017-3552.

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In 2027, the fully phased-in EPA/NHTSA Phase-2 greenhouse gas (GHG) emission legislation for heavy-duty (HD) diesel engines will mandate a 5.1% reduction in fuel consumption for MY2017 tractor engines and a 4.2% reduction in fuel consumption for MY2017 vocational engines. Along with improvements in engine efficiency, manufacturers are likely to face a simultaneous challenge to achieve a significant reduction in tailpipe NOx emissions, as the ARB is expected to implement an ultra-low NOx emission standard in the 2024–27 timeframe. With this consideration, technology solutions for Phase-2 GHG wi
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Baumgardner, Marc E., and Daniel B. Olsen. "Poison Build-up and Performance Degradation of an Oxidation Catalyst in 2-Stroke Natural Gas Engine Exhaust." In ASME 2017 Internal Combustion Engine Division Fall Technical Conference. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/icef2017-3550.

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Due to current and future exhaust emissions regulations, oxidation catalysts are increasingly being added to the exhaust streams of large-bore, 2-stroke, natural gas engines. Such catalysts have been found to have a limited operational lifetime, primarily due to chemical (i.e. catalyst poisoning) and mechanical fouling resulting from the carry-over of lubrication oil from the cylinders. It is critical for users and catalyst developers to understand the nature and rate of catalyst deactivation under these circumstances. This study examines the degradation of an exhaust oxidation catalyst on a l
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Novak, Jiri. "Further Analysis of Warm Prestressing (WPS) Effects: Role of Local Stress and Strain." In ASME 2007 Pressure Vessels and Piping Conference. ASMEDC, 2007. http://dx.doi.org/10.1115/pvp2007-26133.

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Effect of WPS in ferritic alloys 15Kh2MFA (CrMoV) and 18MND5 increases with prestress level more rapidly than Chell’s model predicts; this observation had not been understood until now. In this work, experimental data are presented concerning behaviour of steels under simple Load – Unload – Cool – Fracture history. Chell’s model uses as input quantity true fracture toughness and predicts, for simple temperature and loading histories, apparent fracture toughness. A new proposed model based on local approach corrects value of true fracture toughness as an input quantity for Chell’s formulas. Ide
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Schappell, Bruce G., and Gregory G. Rucker. "Innovative Integration of Decommissioning and Deactivation Program With Soil-Groundwater Clean Up Program Has Positive Results on Budget and Schedule: A Case Study." In The 11th International Conference on Environmental Remediation and Radioactive Waste Management. ASMEDC, 2007. http://dx.doi.org/10.1115/icem2007-7199.

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An innovative approach to integrate the activities of a decommissioning and deactivation program (D&amp;D) with a soil-groundwater clean up program has had significant positive results saving both money and time at the Department of Energy’s Savannah River Site. The accomplishments that have been achieved by the combining the two programs have been remarkable including significant cost savings, economies of scale for sampling and document generation, and alignment of common objectives. Because of the coordination of both activities area-wide “end states” can be formulated and be consistent wit
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Kitamura, Akihiro, Takashi Okada, Sinichiro Asazuma, Shinichi Uematsu, and Takashi Ishibashi. "Glovebox Dismantling Activities and Decommissioning Plan for Plutonium Fuel Fabricating Facility." In 12th International Conference on Nuclear Engineering. ASMEDC, 2004. http://dx.doi.org/10.1115/icone12-49511.

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The gloveboxes and process equipment used at plutonium fuel handling facilities have had to be replaced due to deterioration or the need to make changes. So far, their removal and replacement has taken place more than 30 times in Plutonium Fuel Center, Japan Nuclear Cycle Development Institute (JNC). In most recent dismantling activities, we removed four giant gloveboxes (total size, 110 cubic meters) which possessed equipment to recover plutonium from mixed oxide (MOX) fuel scraps. We have implemented a number of procedural improvements in dismantling activities and collected various kinds of
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Ozioko, Raphael Chidiogo, Humphrey Osita, and Udochukwu Ohia. "Integrated Underreamer Technology with Real-Time Communication Helped Eliminate Rathole in Exploratory Operation Offshore Nigeria." In Offshore Technology Conference. OTC, 2021. http://dx.doi.org/10.4043/31092-ms.

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Abstract This paper describes the successful deployment of integrated underreamer technology with real-time communication through mud-pulse telemetry system, to drill and eliminate rathole in 17 1/2-in × 20-in successfully in one run and helped set casing as close as possible to the depth of suspected pressure ramp on an exploratory well offshore Nigeria. This technology uses the same communication system (actuator bypass) as Measurement While Drilling tools (MWD), Logging While Drilling tools (LWD) and Rotary Steerable System (RSS). Integrated underreamers broadly used in the drilling operati
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Braeckeveldt, Marnix, Luc Ooms, and Gustaaf Geenen. "Dry Storage of Spent Research Reactor Fuel in Castor BR3® Casks at Belgoprocess in Belgium." In ASME 2001 8th International Conference on Radioactive Waste Management and Environmental Remediation. American Society of Mechanical Engineers, 2001. http://dx.doi.org/10.1115/icem2001-1211.

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Abstract The BR3 reactor (10.5 MWe) at the Nuclear Research Center SCK•CEN was the first PWR plant installed in Europe and has been shut down in 1987. The BR3 reactor is from 1989 in a decommissioning stage and most of the spent fuel is presently still stored in the deactivation pool of the BR3 plant and has to be evacuated. The BR3 was used as a test-reactor for new fuel types and assemblies (Mixed Oxide (MOX) fuel, fuel rods containing burnable poison (Gd2O3) and other types of fuels). Some fuel rods, having undergone a destructive analysis, are stored in different laboratories at the SCK•CE
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