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Articoli di riviste sul tema "Bwr type reactor"

Autore: Grafiati
Pubblicato: 4 giugno 2021
Ultima modifica: 1 febbraio 2022

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1

van der Hagen, T. H. J. J., A. J. C. Stekelenburg, and D. D. B. van Bragt. "Reactor experiments on type-I and type-II BWR stability." Nuclear Engineering and Design 200, no. 1-2 (2000): 177–85. http://dx.doi.org/10.1016/s0029-5493(99)00337-4.

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2

Valinčius, Mindaugas, Tadas Kaliatka, Algirdas Kaliatka, and Eugenijus Ušpuras. "Modelling of Severe Accident and In-Vessel Melt Retention Possibilities in BWR Type Reactor." Science and Technology of Nuclear Installations 2018 (August 1, 2018): 1–14. http://dx.doi.org/10.1155/2018/7162387.

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Abstract (sommario):
One of the severe accident management strategies for nuclear reactors is the melted corium retention inside the reactor pressure vessel. The work presented in this article investigates the application of in-vessel retention (IVR) severe accident management strategy in a BWR reactor. The investigations were performed assuming a scenario with the large break LOCA without injection of cooling water. A computer code RELAP/SCDAPSIM MOD 3.4 was used for the numerical simulation of the accident. Using a model of the entire reactor, a full accident sequence from the large break to core uncover and hea
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3

Sánchez, V. H., M. Thieme, and W. Tietsch. "Validation and Application of the Thermal Hydraulic System Code TRACE for Analysis of BWR Transients." Science and Technology of Nuclear Installations 2012 (2012): 1–9. http://dx.doi.org/10.1155/2012/247482.

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The Karlsruhe Institute of Technology (KIT) is participating on (Code Applications and Maintenance Program) CAMP of the US Nuclear Regulatory Commission (NRC) to validate TRACE code for LWR transient analysis. The application of TRACE for the safety assessment of BWR requires a throughout verification and validation using experimental data from separate effect and integral tests but also using plant data. The validation process is normally focused on safety-relevant phenomena for example, pressure drop, void fraction, heat transfer, and critical power models. The purpose of this paper is to va
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4

Shi, Shanbin, Joshua P. Schlegel, Caleb S. Brooks, et al. "Experimental investigation of natural circulation instability in a BWR-type small modular reactor." Progress in Nuclear Energy 85 (November 2015): 96–107. http://dx.doi.org/10.1016/j.pnucene.2015.06.014.

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5

YANAGISAWA, Kazuaki, and Harald DEVOLD. "Pellet-cladding interaction on light water reactor fuel. (II) BWR type fuel rod." Journal of the Atomic Energy Society of Japan / Atomic Energy Society of Japan 28, no. 8 (1986): 771–82. http://dx.doi.org/10.3327/jaesj.28.771.

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6

Niearonov, Y. M., T. Y. Baybuzenko, V. Y. Shenderovych, et al. "Reactor Technology Rationale for Construction of Substitution and New Power Units in Ukraine after 2035." Nuclear Power and the Environment 18 (2020): 10–22. http://dx.doi.org/10.31717/2311-8253.20.3.2.

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An algorithm of selecting the reactor technology type were constructed. The algorithm is based on a comparative assessment of the respective nuclear power plants. The formation of qualitative and quantitative criteria is performed for the estimation algorithm. Tools of the International Atomic Energy Agency (IAEA) INPRO-KIND project on multi-criteria comparative assessment of nuclear power plants for ranking the obtained results were adapted. The sensitivity analysis of the obtained results to change of numerical values and weight of criteria is carried out. The choice of the type of reactor t
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7

KOBAYASHI, Toshio, Tohru YAMANAKA, and Yoshihumi YAMAMOTO. "EARTHQUAKE RESPONSE ANALYSIS OF A BWR-TYPE NUCLEAR REACTOR BUILDING IN REGARD TO BASE MAT FLEXIBILITY." Journal of Structural and Construction Engineering (Transactions of AIJ) 66, no. 550 (2001): 57–64. http://dx.doi.org/10.3130/aijs.66.57_3.

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8

Rebak, Raul B., Michael Larsen, and Young-Jin Kim. "Characterization of oxides formed on iron-chromium-aluminum alloy in simulated light water reactor environments." Corrosion Reviews 35, no. 3 (2017): 177–88. http://dx.doi.org/10.1515/corrrev-2017-0011.

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AbstractTo avoid accidents like that in Fukushima, the US Department of Energy is engaged with a nuclear fuel vendor to evaluate the performance of iron-chromium-aluminum (FeCrAl) alloys such as advanced powder metallurgy tubing (APMT) as accident-tolerant material for uranium dioxide fuel cladding in light water reactors (LWR). It was important to characterize the oxides formed on APMT under both boiling water reactor (BWR) and pressurized water reactor (PWR) environments for a better understanding of its environmental sustainability in LWRs. Coupons of APMT were exposed for 1 year to both hy
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9

Wulandari, Rindi, Sutanto Sutanto, and Asril Pramutadi Andi Mustari. "INTERACTION OF MOLTEN URANIUM WITH ELECTRICAL PENETRATING TUBE OF A BOILING WATER REACTOR DURING SEVERE ACCIDENT." GANENDRA Majalah IPTEK Nuklir 23, no. 2 (2020): 55. http://dx.doi.org/10.17146/gnd.2020.23.2.5816.

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INTERACTION OF MOLTEN URANIUM WITH ELECTRICAL PENETRATING TUBE OF A BOILING WATER REACTOR DURING SEVERE ACCIDENT. Fukushima accident was the first severe accident of a BWR type which the core was melted leading to RPV failure at the bottom head. Regarding its complex structures of the bottom head, the scheme of failure is different from that of previous reactor severe accidents that ever happened (i.e. TMI-2 and Chernobyl accidents). There is a lot of penetration tubes through the bottom head leading to a complex interaction between corium and the structures. Eutectic reaction is possible to h
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10

Xue, He, and Tetsuo Shoji. "Quantitative Prediction of EAC Crack Growth Rate of Sensitized Type 304 Stainless Steel in Boiling Water Reactor Environments Based on EPFEM." Journal of Pressure Vessel Technology 129, no. 3 (2006): 460–67. http://dx.doi.org/10.1115/1.2748827.

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The quantitative prediction of environmentally assisted cracking (EAC) or stress corrosion cracking (SCC) is essential in order to predict service life and also the structural integrity and safety assessment of light water reactors. During the last 3 decades many of the research results obtained on the quantitative prediction of the EAC crack growth rate have been based on linear fracture mechanics. In order to investigate EAC behavior in the high strain zone of important structures in light water reactors, the approach taken in this paper is one in which quantitative calculations of the EAC c
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11

Hale, D. A. "The Effect of BWR Startup Environments on Crack Growth in Structural Alloys." Journal of Engineering Materials and Technology 108, no. 1 (1986): 44–49. http://dx.doi.org/10.1115/1.3225840.

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During startup of a Boiling Water Reactor (BWR), the water chemistry and temperature are constantly changing. Special operational practices can be performed to control the dissolved oxygen level using, for example, vacuum deaeration. To assess the impact of startup practice on environmental cracking in the structural materials used in the BWR, a large program was performed to evaluate crack growth at representative environmental conditions for both conventional and vacuum deaeration startup practices. Five alloys were studied: Types 304 and 316 nuclear grade stainless steel, Inconel 600, carbo
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12

Wibisono, Andhika Feri, and Eugene Shwageraus. "CORE DESIGN STUDY FOR A SMALL MODULAR BOILING WATER REACTOR." EPJ Web of Conferences 247 (2021): 19001. http://dx.doi.org/10.1051/epjconf/202124719001.

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The hybrid Small Modular Boiling Water Reactor (SMBWR) is a new conceptual design of BWR-type SMR. The main features of SMBWR include a natural circulation loop in its coolant recirculation system and external superheaters system integrated into the steam cycle. A full core analysis of SMBWR is performed with the nodal diffusion code PANTHER using homogenised constant libraries generated by WIMS. The study compared a number of core geometry configurations and fuel management schemes to suppress excess reactivity throughout fuel depletion. Three options for SMBWR core aspect ratio using the sam
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13

Ghasabian, M., F. Mofidnakhaei, and S. Talebi. "Effect of gap design pressure on the LWR fuel rods lifetime." Kerntechnik 86, no. 3 (2021): 202–9. http://dx.doi.org/10.1515/kern-2021-0004.

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Abstract The fuel burn-up rate has been raised in recent years to improve the efficiency of nuclear LWRs (light water reactors). Therefore, surveying and estimating changes in fuel properties and structural materials during radiation exposure is of paramount importance. In the present study, the researchers focused on analyzing the role of LWR fuel rod initial gap pressure (initial gas pressure when a fuel rod is fabricated) on the rod’s thermal and mechanical performance. FRAPCON-4.0 steady-state fuel performance code was used to simulate the effect of initial gap pressure on the behavior of
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14

Roychowdhury, Supratik, Vivekanand Kain, M. Gupta, et al. "IGSCC of Non-Sensitised Austenitic Stainless Steels in BWR Environment – Effect of Deformation Mode on Grain Boundary Susceptibility." Materials Science Forum 702-703 (December 2011): 685–88. http://dx.doi.org/10.4028/www.scientific.net/msf.702-703.685.

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Intergranular Stress Corrosion Cracking (IGSCC) of austenitic Stainless Steels (SS) in Boiling Water Reactor (BWR) environment is generic in nature in both the sensitised and the non-sensitized conditions. IGSCC in non-sensitized austenitic SS in the strain hardened condition has been reported without any grain boundary chromium depletion or impurity segregation. The present study ascertains the reason for IGSCC in BWR environment in non-sensitized condition and investigates the effect of nitrogen content in SS on the susceptibility to IGSCC. Two heats of type 304LN stainless steel with 0.08 a
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15

Park, J. Y., W. E. Ruther, T. F. Kassner, and W. J. Shack. "Stress Corrosion Crack Growth Rates in Type 304 Stainless Steel in Simulated BWR Environments." Journal of Engineering Materials and Technology 108, no. 1 (1986): 20–25. http://dx.doi.org/10.1115/1.3225835.

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Stress corrosion cracking of Type 304 stainless steel has been studied with fracture-mechanics-type standard 25.4-mm-thick compact tension specimens in simulated boiling-water reactor environments at 289°C and 8.3 MPa. Tests were performed with either constant or cyclic loading. The latter tests used a positive sawtooth waveform with an unloading time of 1 or 5 s, a load ratio R (minimum load to maximum load) of 0.2 to 0.95, and a frequency f of 8 × 10−4 to 1 × 10−1 Hz. Crack lengths and crack growth rates were determined by the compliance method; crack mouth opening displacement was measured
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16

Kirillov, Pavel L., and Galina P. Bogoslovskaya. "Generation IV supercritical water-cooled nuclear reactors: Realistic prospects and research program." Nuclear Energy and Technology 5, no. 1 (2019): 67–74. http://dx.doi.org/10.3897/nucet.5.34293.

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Existing conditions make possible obtaining information that being discussed openly by wide scientific community could help outlining or even establishing the expediency of a particular area of present and future research. Use link http://www.sciencedirect.com to learn about the topics or areas that most attract researchers from different countries. The Generation IV International Forum (GIF-IV) established in January 2000 has set a goal to improve the new generation of nuclear technologies in the following areas: stability, safety and reliability, economic competitiveness, proliferation resis
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17

Vechgama, Wasin, and Kampanart Silva. "Assessment of Cesium Compound Behavior during Simultaneous Failure of Reactor Pressure Vessels and Spent Fuel Pools Using Modified ART Mod 2: Fukushima Daiichi Accident Simulation." Science and Technology of Nuclear Installations 2021 (May 5, 2021): 1–16. http://dx.doi.org/10.1155/2021/9975014.

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To support the regional strategy development of ASEAN NPSR using scientific research, Modified ART Mod 2 has been used to assess the fission product release from RPVs and SFPs independently. However, the Fukushima Accident suggested the possibility of simultaneous release from RPV and SFP which indicated the necessity of re-evaluation of the maximum source term. The objective was to assess the fission product behavior during a simultaneous failure in RPVs and SFPs of BWR type with Mark I containment design in multiple units using Modified ART Mod 2 in order to evaluate the maximum source term.
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18

Terashima, M., M. Iwasaki, H. Yasui, R. Goel, K. Suto, and C. Inoue. "Tracer experiment and RTD analysis of DAF separator with bar-type baffles." Water Science and Technology 67, no. 5 (2013): 942–47. http://dx.doi.org/10.2166/wst.2013.584.

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This paper describes the development of a new dissolved air flotation (DAF) separator with a flow streamlining baffle to improve solid separation efficiency. The analysis of the RTD (residence time distribution) curves indicated that the parameter θ10 (dimensionless time at which 10% of tracer has discharged) increased from 0.38 for control reactor to 0.54 for the test reactor, suggesting significant reduction in short circuit flow. The RTD curves were also used to develop a compartment model for white water (rich in micro-bubbles and water flow is turbulent) and clear water (little or no air
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19

Kintsurashvili, Ekaterina, Arvi Duka, Ivana Ignjacev, Gregory Pattakos, Irene Gavras, and Haralambos Gavras. "Age-related changes of bradykinin B1 and B2 receptors in rat heart." American Journal of Physiology-Heart and Circulatory Physiology 289, no. 1 (2005): H202—H205. http://dx.doi.org/10.1152/ajpheart.01287.2004.

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Aging is a major risk factor for the development of vascular diseases, such as hypertension and atherosclerosis, that leads to end organ damage and especially heart failure. Bradykinin has been demonstrated to have a cardioprotective role by affecting metabolic processes and tissue perfusion under conditions of myocardial ischemia. Its actions are exerted via the bradykinin B1- and B2-type receptors (B1Rs and B2Rs), but the functional status of these receptors during the aging process is poorly understood. This study aims to investigate whether changes in B1R and B2R gene and protein expressio
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20

Nakata, Alexandre Ezzidi, Masanori Naitoh, and Chris Allison. "NEED OF A NEXT GENERATION SEVERE ACCIDENT CODE." JURNAL TEKNOLOGI REAKTOR NUKLIR TRI DASA MEGA 21, no. 3 (2019): 119. http://dx.doi.org/10.17146/tdm.2019.21.3.5630.

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Two international severe accident benchmark problems have been performed recently by using several existing parametric severe accident codes: The Benchmark Study of the Accident at the Fukushima Daiichi Nuclear Power Plant (BSAF) and the Benchmark of the In-Vessel Melt Retention (IVMR) Analysis of a VVER-1000 Nuclear Power Plant (NPP). The BSAF project was organized by the Nuclear Power Engineering Center (NUPEC) of the Institute of Applied Energy (IAE) in Japan for the three Boiling Water Reactors (BWRs) of the Fukushima NPP. The IVMR Project was organized by the Joint Research Center (JRC) o
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21

D’Auria, F., N. Aksan, and H. Glaeser. "Physical Phenomena in Nuclear Thermal Hydraulics and Current Status." Tecnica Italiana-Italian Journal of Engineering Science 65, no. 1 (2021): 1–11. http://dx.doi.org/10.18280/ti-ijes.650101.

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116 nuclear Thermal-Hydraulic Phenomena T-HP are identified in the present paper, following documents issued during the last three decades by the Committee on the Safety of Nuclear Installations of Nuclear Energy Agency of the Organization for Economic Cooperation and Development (OECD/NEA/CSNI) and by the International Atomic Energy Agency (IAEA). The derived T-HP list includes consideration of experiments performed in Separate Effect Test (SET) and Integral Effect Test (IET) facilities relevant to reactor coolant system and containment of Water Cooled Nuclear Reactors (WCNR). We consider a d
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22

Detkina, Anna, Dzianis Litskevitch, Aiden Peakman, and Bruno Merk. "Criticality Analysis for BWR Spent Fuel Based on the Burnup Credit Evaluation from Full Core Simulations." Applied Sciences 11, no. 4 (2021): 1498. http://dx.doi.org/10.3390/app11041498.

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This study performed criticality analysis for the GBC-68 storage cask loaded with boiling water reactor (BWR) spent fuel at the discharged burnups obtained from the full-core simulations. The analysis was conducted for: (1) different reloading scenarios; (2) target burnups; and (3) two fuel assembly types—GE14 and SVEA100—to estimate the impact each of the three factors has on the cask reactivity. The BWR spent fuel composition was estimated using the results of the nodal analysis for the advanced boiling water reactor (ABWR) core model developed in this study. The nodal calculations provided
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23

El-Mongy, Sayed. "Proposed Innovative Correlations for some Nuclear and Radiological Fields using Theorem of S. El-Mongy." JOURNAL OF ADVANCES IN PHYSICS 19 (January 25, 2021): 6–12. http://dx.doi.org/10.24297/jap.v19i.8946.

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Thinking and thought are divine urge in the Great Quran. The published S. El-Mongy theorem (L= eπrsA) correlates eπ with radius r of circular and spherical geometries by a factor sA (θ/10ϕ) to be used for calculations of arc length and astronomical distance. In this article, Sayed’s formula was used to produce correlations with the well-established laws and formulas of different nuclear and radiological fields. The formula was directed to be correlated with half-life time, activity, flux, reaction rate, reactor power, mean free path, photon fluence rate, radiation dose rate and half value thic
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24

Chuayboon, Srirat, and Stéphane Abanades. "Solar-Driven Chemical Looping Methane Reforming Using ZnO Oxygen Carrier for Syngas and Zn Production in a Cavity-Type Solar Reactor." Catalysts 10, no. 11 (2020): 1356. http://dx.doi.org/10.3390/catal10111356.

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Converting sunlight into chemical fuels and metal commodities, via solar thermochemical conversion processes, is an attractive prospect for the long-term storage of renewable energy. In this study, the combined methane reforming and ZnO reduction in a single reaction for co-production of hydrogen-rich syngas and metallic Zn was demonstrated in a flexible solar thermochemical reactor prototype, driven by highly concentrated sunlight. Using solar energy as the process heat source in chemical-looping methane reforming with the ZnO/Zn oxygen carrier is a means to reduce the dependence on conventio
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25

Ardy, Aisyah, Jenny Rizkiana, Melia Laniwati, and Herri Susanto. "Synthesis of dimethyl ether using a fixed bed of dual catalyst for methanol synthesis and its dehydration." MATEC Web of Conferences 268 (2019): 07003. http://dx.doi.org/10.1051/matecconf/201926807003.

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Experimental study on direct synthesis of DME (dimethyl ether) has been conducted using tubular reactor. The synthesis of DME was performed with two commercial catalysts, ie methanol synthesis catalyst (M151, Cu-based) and methanol dehydration catalyst (γAl2O3). A mixture of H2, CO, and N2 was used as a model for synthesis gas. Gas flow rate was set at 20 mL/min (5 bar and 240oC). The reaction held at: pressure of 5 bar and a temperature of 240°C. This experiment was conducted by arranging a series of two types of catalysts in a fixed bed reactor. The methanol synthesis catalyst was placed in
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26

Wang, Yao, Yu-Shui Wu, Pei-Zhen Zheng, et al. "A novel mutation in the NADH-cytochrome b5 reductase gene of a Chinese patient with recessive congenital methemoglobinemia." Blood 95, no. 10 (2000): 3250–55. http://dx.doi.org/10.1182/blood.v95.10.3250.

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Abstract Recessive congenital methemoglobinemia due to nicotinamide adenine dinucleotide (NADH)-cytochrome b5 reductase (b5R) deficiency is classified into 2 clinical types: type 1 (erythrocyte type) and type 2 (generalized type). We found a Chinese family with type 1 recessive congenital methemoglobinemia, the patients from which were diagnosed according to clinical symptoms and b5R enzyme activity in the blood cells. To learn the molecular basis of type 1 recessive congenital methemoglobinemia in this Chinese family, we isolated total RNA from the peripheral leukocytes of the propositus and
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27

Wang, Yao, Yu-Shui Wu, Pei-Zhen Zheng, et al. "A novel mutation in the NADH-cytochrome b5 reductase gene of a Chinese patient with recessive congenital methemoglobinemia." Blood 95, no. 10 (2000): 3250–55. http://dx.doi.org/10.1182/blood.v95.10.3250.010k23_3250_3255.

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Recessive congenital methemoglobinemia due to nicotinamide adenine dinucleotide (NADH)-cytochrome b5 reductase (b5R) deficiency is classified into 2 clinical types: type 1 (erythrocyte type) and type 2 (generalized type). We found a Chinese family with type 1 recessive congenital methemoglobinemia, the patients from which were diagnosed according to clinical symptoms and b5R enzyme activity in the blood cells. To learn the molecular basis of type 1 recessive congenital methemoglobinemia in this Chinese family, we isolated total RNA from the peripheral leukocytes of the propositus and b5R compl
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28

LANGE, CARSTEN, DIETER HENNIG, and ANTONIO HURTADO. "A NOVEL RESULT IN THE FIELD OF NONLINEAR STABILITY ANALYSIS OF BOILING WATER REACTORS." International Journal of Bifurcation and Chaos 22, no. 02 (2012): 1250041. http://dx.doi.org/10.1142/s0218127412500411.

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The nonlinear stability analysis of boiling water nuclear reactors (BWRs) is conducted with the aid of so-called advanced, well validated, system codes and an advanced reduced order model to build a detailed mathematical understanding of the BWR behavior in the practical relevant parameter space. In the last years, the existence of Hopf-bifurcation points was confirmed by some researchers. In the framework of this paper, a parameter region was analyzed in which the coexistence of different stability states is realized. As a novel result, we found a parameter region in which stable fixed points
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29

Saglio, G., F. Pane, E. Gottardi, et al. "Consistent amounts of acute leukemia-associated P190BCR/ABL transcripts are expressed by chronic myelogenous leukemia patients at diagnosis." Blood 87, no. 3 (1996): 1075–80. http://dx.doi.org/10.1182/blood.v87.3.1075.bloodjournal8731075.

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In chronic myelogenous leukemia (CML), the Philadelphia (Ph) chromosome translocation results in the formation of BCR/ABL genes, normally transcribed in two types of hybrid transcripts with a b2a2 or b3a2 BCR/ABL junction, which give origin to 210-kD fusion proteins (P210). A third type of BCR/ABL (with e1a2 type of junction) has been identified in approximately 50% of the Ph-positive acute lymphoblastic leukemia (Ph+ALL) cases and results in the production of a BCR/ABL protein of 190 kD (P190). The presence of this transcript has been associated almost exclusively with the presence of an acut
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30

Zazzeri, G., E. Acuña Yeomans, and H. D. Graven. "Global and Regional Emissions of Radiocarbon from Nuclear Power Plants from 1972 to 2016." Radiocarbon 60, no. 4 (2018): 1067–81. http://dx.doi.org/10.1017/rdc.2018.42.

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ABSTRACTCH4 and CO2 emissions from geologic sources, which are devoid of radiocarbon (14C), dilute the atmospheric 14C/C ratio. Observations of 14C/C can be used to estimate fossil fuel-derived CH4 and CO2. However, the atmospheric 14C/C ratio is perturbed by emissions of 14C from nuclear power plants (NPPs) and fuel reprocessing sites, which may affect such 14C/C-based estimation if they are not correctly quantified. We calculate NPP 14C emissions for CO2 and CH4 from 1972–2016 using standard emission factors (14C emitted per unit of power produced) and analyze trends in global and regional e
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31

Din, Israf Ud, Maizatul Shima Shaharun, Duvvuri Subbarao, and A. Naeem. "Synthesis, Characterization and Activity Pattern of Carbon Nanofibres Based Cu-ZrO2 Catalyst in the Hydrogenation of Carbon Dioxide to Methanol." Advanced Materials Research 925 (April 2014): 349–53. http://dx.doi.org/10.4028/www.scientific.net/amr.925.349.

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Carbon nanofibers based Cu-ZrO2 catalysts (Cu-ZrO2/CNF) were synthesized by deposition precipitation method. Carbon nanofibers of herringbone type were used as a catalyst support. Before using as catalyst support, carbon nanofibers were oxidized to (CNF-O) with 10 % (v/v) nitric acid solution. A series of catalyst with various copper loadings of 10, 15 and 20 wt% were synthesized. X-ray diffraction (XRD) study revealed that degree of crystallization of catalyst increase with increasing the concentration of copper content in the catalyst. BET studies showed higher surface area for low loading o
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32

Ramadhani, Sari Dafinah, Saphira Nurina Fakhri, and Setijo Bismo. "Performance of novel dielectric barrier discharge reactor for biodiesel production from palm oil and ethanol." E3S Web of Conferences 67 (2018): 02010. http://dx.doi.org/10.1051/e3sconf/20186702010.

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The disadvantages of conventional biodiesel synthesis trigger the birth of new biodiesel synthesis methods using the DBD plasma reactor. The conventional methods with homogeneous and heterogeneous catalysts have significant constraints that the formation of glycerol compounds in large enough quantities that require considerable energy. The aim of present experiment is to design DBD non-thermal plasma reactor coaxial pipe type and to do its performance test in converting biodiesel The feed stock used are palm oil, ethanol, and argon gas as plasma carrier. Such a chemical reactor, this plasma re
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33

Khardenavis, S., and A. Deshpande. "Borderline tuberculoid leprosy with type 1/reversal reaction." Case Reports 2014, jan30 1 (2014): bcr2013202921. http://dx.doi.org/10.1136/bcr-2013-202921.

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Hao, Xin Li, Jing Zhe Zhao, Yue Hong Song, and Zhi Fang Huang. "Surfactant-Assisted Synthesis of Birnessite-Type MnO2 Nanoflowers." Journal of Nano Research 53 (June 2018): 1–6. http://dx.doi.org/10.4028/www.scientific.net/jnanor.53.1.

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Flower-like birnessite-type MnO2 (Bir-MnO2) was synthesized through decomposition of KMnO4 under acid condition at 90 °C in open system. The addition of surfactant was a key factor for synthesis of Bir-MnO2 at low temperature and ambient pressure. Crystal nucleus obtained via reaction between surfactant and KMnO4 can catalyze decomposition of KMnO4, which led to the higher velocity of reaction. Reducibility of surfactant additional had an impact on yield and size of sample obtained. As-prepared sample with highest yield and smallest size was synthesized by using SOA as surfactant. Long reactio
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35

Audemar, Maïté, Yantao Wang, Deyang Zhao, et al. "Synthesis of Furfuryl Alcohol from Furfural: A Comparison between Batch and Continuous Flow Reactors." Energies 13, no. 4 (2020): 1002. http://dx.doi.org/10.3390/en13041002.

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Abstract (sommario):
Furfural is a platform molecule obtained from hemicellulose. Among the products that can be produced from furfural, furfuryl alcohol is one of the most extensively studied. It is synthesized at an industrial scale in the presence of CuCr catalyst, but this process suffers from an environmental negative impact. Here, we demonstrate that a non-noble metal catalyst (Co/SiO2) was active (100% conversion of furfural) and selective (100% selectivity to furfuryl alcohol) in the hydrogenation of furfural to furfuryl alcohol at 150 °C under 20 bar of hydrogen. This catalyst was recyclable up to 3 cycle
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36

Capodaglio, Andrea G., and Arianna Callegari. "Domestic wastewater treatment with a decentralized, simple technology biomass concentrator reactor." Journal of Water, Sanitation and Hygiene for Development 6, no. 3 (2016): 507–10. http://dx.doi.org/10.2166/washdev.2016.042.

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Abstract (sommario):
A new type of membrane-like aerobic reactor initially designed for the degradation of hydrocarbon-derived groundwater contaminants was tested for treating domestic wastewater. The biomass concentrator reactor (BCR) consists of an enclosed, aerated tank containing a graded filtration medium with the function of solids separation, and was previously used to treat industrial wastewaters containing refractory substances, with good results. It is a small-footprint reactor that could be operated in remote areas with no long-range sewage connections, with few appropriate controls and little monitorin
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37

Inokuchi, K., T. Inoue, A. Tojo, et al. "A possible correlation between the type of bcr-abl hybrid messenger RNA and platelet count in Philadelphia-positive chronic myelogenous leukemia [see comments]." Blood 78, no. 12 (1991): 3125–27. http://dx.doi.org/10.1182/blood.v78.12.3125.3125.

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Abstract (sommario):
Abstract The Philadelphia (Ph1) chromosome, in which the hybrid bcr-abl gene is formed, is thought to be the initial event in chronic myelogenous leukemia (CML). The position of the breakpoint within the breakpoint cluster region (bcr) on Ph1 chromosome and the splicing pattern determine the species of the fused bcr-abl messenger RNA (mRNA). We tried to detect the two types of fused mRNAs in 57 chronic-phase cases of Ph1-positive CML using the polymerase chain reaction procedure (RT- PCR). The bcr exon 2/abl exon 2 fused mRNA (b2-a2) was detected in 17 patients, the bcr exon 3/abl exon 2 fused
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38

Inokuchi, K., T. Inoue, A. Tojo, et al. "A possible correlation between the type of bcr-abl hybrid messenger RNA and platelet count in Philadelphia-positive chronic myelogenous leukemia [see comments]." Blood 78, no. 12 (1991): 3125–27. http://dx.doi.org/10.1182/blood.v78.12.3125.bloodjournal78123125.

Testo completo
Abstract (sommario):
The Philadelphia (Ph1) chromosome, in which the hybrid bcr-abl gene is formed, is thought to be the initial event in chronic myelogenous leukemia (CML). The position of the breakpoint within the breakpoint cluster region (bcr) on Ph1 chromosome and the splicing pattern determine the species of the fused bcr-abl messenger RNA (mRNA). We tried to detect the two types of fused mRNAs in 57 chronic-phase cases of Ph1-positive CML using the polymerase chain reaction procedure (RT- PCR). The bcr exon 2/abl exon 2 fused mRNA (b2-a2) was detected in 17 patients, the bcr exon 3/abl exon 2 fused mRNA (b3
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39

Bryk, Rafał, Thomas Mull, and Holger Schmidt. "Experimental investigation of LWR passive safety systems performance at the INKA test facility." E3S Web of Conferences 137 (2019): 01035. http://dx.doi.org/10.1051/e3sconf/201913701035.

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Abstract (sommario):
INKA is a test facility designed by Framatome and built in the technical center in Karlstein. The original objective for establishing this test rig was the investigation of the performance of the passive safety systems developed in a new Framatome Boiling Water Reactor (BWR) design – KERENA. INKA was constructed in the scale of 1:1 in heights while the total volume of the containment was replicated in 1:24. Since the geometries of particular safety systems are faithfully reflected, their actual performance in the original plant can be investigated at the full scale. Due to the unquestionable i
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40

Endres, Robert, Marat B. Alimzhanov, Thomas Plitz та ін. "Mature Follicular Dendritic Cell Networks Depend on Expression of Lymphotoxin β Receptor by Radioresistant Stromal Cells and of Lymphotoxin β and Tumor Necrosis Factor by B Cells". Journal of Experimental Medicine 189, № 1 (1999): 159–68. http://dx.doi.org/10.1084/jem.189.1.159.

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Abstract (sommario):
The formation of germinal centers (GCs) represents a crucial step in the humoral immune response. Recent studies using gene-targeted mice have revealed that the cytokines tumor necrosis factor (TNF), lymphotoxin (LT) α, and LTβ, as well as their receptors TNF receptor p55 (TNFRp55) and LTβR play essential roles in the development of GCs. To establish in which cell types expression of LTβR, LTβ, and TNF is required for GC formation, LTβR−/−, LTβ−/−, TNF−/−, B cell–deficient (BCR−/−), and wild-type mice were used to generate reciprocal or mixed bone marrow (BM) chimeric mice. GCs, herein defined
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41

Sastaravet, Prajak, Saret Bun, Kritchart Wongwailikhit, Nattawin Chawaloesphonsiya, Manabu Fujii, and Pisut Painmanakul. "Relative Effect of Additional Solid Media on Bubble Hydrodynamics in Bubble Column and Airlift Reactors towards Mass Transfer Enhancement." Processes 8, no. 6 (2020): 713. http://dx.doi.org/10.3390/pr8060713.

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Abstract (sommario):
Many researchers have focused on multi-phase reactor development for improving mass transfer performance. However, solid particle addition in gas–liquid contactor for better oxygen mass transfer performance is still limited. Hence, this study aims to analyze the relative effect of different types of local solid media on the bubble hydrodynamic characteristics towards mass transfer enhancement in bubble columns (BCR) and airlift reactors (ALR). This was investigated by varying solid media types (ring, sphere, cylinder, and square), solid loadings (0%–15%), and superficial gas velocities (Vg) (2
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42

Campos, C. M. M., and G. K. Anderson. "The Effect of the Liquid Upflow Velocity and the Substrate Concentration on the Start-Up and Steady-State Periods of Lab-Scale UASB Reactors." Water Science and Technology 25, no. 7 (1992): 41–50. http://dx.doi.org/10.2166/wst.1992.0137.

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Abstract (sommario):
This research was carried out in order to study the effect of the upflow liquid velocity (ULV), the COD concentration, the volumetric loading rate (VLR) and the hydraulic loading rate (HLR) on the start-up and steady-state performance of UASB reactors treating soluble substrate with 3,000 mgCOD/l at mesophyllic temperature (35°C). Three lab-reactors (UASB) were constructed with different liquid volumes, and also with different cross-sectional areas. The three UASB reactors were started up with the same biological loading rate (BLR), but the start-up procedures were based on different criteria.
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43

Golovanov, V. N., A. V. Povstyanko, V. S. Neustroev, V. M. Kosenkov, E. P. Klochkov, and V. K. Shamardin. "A materials-technology investigation of the control rod bushes of reactor type BOR-60." Soviet Atomic Energy 59, no. 4 (1985): 853–55. http://dx.doi.org/10.1007/bf01123320.

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44

Funnell, Deanna L., and Jeffrey F. Pedersen. "Reaction of Sorghum Lines Genetically Modified for Reduced Lignin Content to Infection by Fusarium and Alternaria spp." Plant Disease 90, no. 3 (2006): 331–38. http://dx.doi.org/10.1094/pd-90-0331.

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Abstract (sommario):
Two genes conferring the brown midrib (bmr) trait had been backcrossed into six elite sorghum lines, resulting in reduced lignin in the bmr lines when compared with the wild-type parent. Seed and leaf tissue from field-grown plants, planted at two locations, were screened for Alternaria spp. and Fusarium spp. on semi-selective media. The results suggest that bmr lines do not have increased susceptibility to colonization by Alternaria spp. However, significantly fewer colonies of Fusarium spp., including Fusarium moniliforme, were recovered from seed of reduced lignin lines from two genetic bac
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45

Lee, H., J. Han, and Z. Yun. "Biological nitrogen and phosphorus removal in UCT-type MBR process." Water Science and Technology 59, no. 11 (2009): 2093–99. http://dx.doi.org/10.2166/wst.2009.242.

Testo completo
Abstract (sommario):
A lab-scale UCT-type membrane bio-reactor (MBR) was operated for biological nitrogen (N) and phosphorus (P) removal simultaneously. In order to examine biological nutrient removal (BNR) characteristics of MBR, the lab unit was fed with a synthetic strong and weak wastewater. With strong wastewater, a simultaneous removal of N and P was achieved while application of weak wastewater resulted in a decrease of both N and P removal. Recycled nitrate due to the limited organic in weak wastewater operation probably caused a nitrate inhibition in anaerobic zone. In step feed modification with weak was
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46

Georgescu, Vasile, Casen Panaitescu, Mihaela Bombos, and Dorin Bombos. "Hydrogenolysis of Glycerol in Gas Phase on Cu-Cr Mixed Oxide Catalyst Doped with Ni." Revista de Chimie 68, no. 5 (2017): 1118–21. http://dx.doi.org/10.37358/rc.17.5.5624.

Testo completo
Abstract (sommario):
Hydrogenolysis of glycerol was conducted on catalyst of the type mixed oxide of Cu-Cr doped with NiO on g-Al2O3. The prepared catalyst was analyzed by XRD, IR and TPR. Catalytic tests were carried out on a laboratory plant in continuous flow system on a reactor equipped with heating mantle, at molar ratio of glycerol / hydrogen of 1/300, glycerol volume hourly space velocities 1000s-1, temperatures 200-220oC and pressures 3-5 bar. The main reaction products identified were propylene glycol and hydroxyacetone. Glycerol conversion increases with temperature and pressure on ranges of parameters s
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47

Secher, Thomas, Camilla Lenz, Giuseppe Cazzamali, et al. "Molecular Cloning of a Functional Allatostatin Gut/Brain Receptor and an Allatostatin Preprohormone from the SilkwormBombyx mori." Journal of Biological Chemistry 276, no. 50 (2001): 47052–60. http://dx.doi.org/10.1074/jbc.m106675200.

Testo completo
Abstract (sommario):
The cockroach-type or A-type allatostatins are inhibitory insect neuropeptides with the C-terminal sequence Tyr/Phe-X-Phe-Gly-Leu-NH2. Here, we have cloned an A-type allatostatin receptor from the silkwormBombyx mori(BAR). BAR is 361 amino acid residues long, has seven transmembrane domains, shows 60% amino acid residue identity with the firstDrosophilaallatostatin receptor (DAR-1), and 48% identity with the secondDrosophilaallatostatin receptor (DAR-2). The BAR gene has two introns and three exons. These two introns coincide with and have the same intron phasing as two introns in the DAR-1 an
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48

Melo, JV, DE Gordon, A. Tuszynski, S. Dhut, BD Young, and JM Goldman. "Expression of the ABL-BCR fusion gene in Philadelphia-positive acute lymphoblastic leukemia." Blood 81, no. 10 (1993): 2488–91. http://dx.doi.org/10.1182/blood.v81.10.2488.2488.

Testo completo
Abstract (sommario):
Abstract We have previously shown that the chimeric gene ABL-BCR, formed on the derivative chromosome 9q+ as a result of the t(9;22) translocation, is transcriptionally active in 65% of chronic myeloid leukemia patients. We have now used the same technique, reverse transcription/polymerase chain reaction amplification of ABL-BCR transcripts, to study nine patients with Philadelphia (Ph) chromosome-positive acute lymphoblastic leukemia (ALL); seven expressed the P190 and two the P210 type of BCR- ABL fusion protein. All seven patients with P190 had ABL-BCR transcripts containing a junction betw
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49

Melo, JV, DE Gordon, A. Tuszynski, S. Dhut, BD Young, and JM Goldman. "Expression of the ABL-BCR fusion gene in Philadelphia-positive acute lymphoblastic leukemia." Blood 81, no. 10 (1993): 2488–91. http://dx.doi.org/10.1182/blood.v81.10.2488.bloodjournal81102488.

Testo completo
Abstract (sommario):
We have previously shown that the chimeric gene ABL-BCR, formed on the derivative chromosome 9q+ as a result of the t(9;22) translocation, is transcriptionally active in 65% of chronic myeloid leukemia patients. We have now used the same technique, reverse transcription/polymerase chain reaction amplification of ABL-BCR transcripts, to study nine patients with Philadelphia (Ph) chromosome-positive acute lymphoblastic leukemia (ALL); seven expressed the P190 and two the P210 type of BCR- ABL fusion protein. All seven patients with P190 had ABL-BCR transcripts containing a junction between ABL e
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50

Lee, MS, KS Chang, EJ Freireich, et al. "Detection of minimal residual bcr/abl transcripts by a modified polymerase chain reaction." Blood 72, no. 3 (1988): 893–97. http://dx.doi.org/10.1182/blood.v72.3.893.893.

Testo completo
Abstract (sommario):
Abstract The Philadelphia (Ph1) chromosome in chronic myelogenous leukemia (CML) involves reciprocal translocation of the bcr gene and the c-abl oncogene. The fused bcr/abl gene is transcribed into two types of chimeric mRNA. By means of a combined method of S1 nuclease protection and polymerase chain reaction, we amplified sequences representative of the chimeric bcr/abl transcripts. Only 5 micrograms of total cellular RNA is needed and the chimeric bcr/abl message can be detected at a dilution of 1:100,000. We also detected residual chimeric bcr/abl transcripts in the remission samples from
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