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Academic literature on the topic 'Corona column'

Author: Grafiati

Published: 4 June 2021

Last updated: 1 February 2022

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Journal articles on the topic "Corona column"

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GÜN, GÜLNUR ÝKİS, and E. NİHAL ERCAN. "X-RAY SPECTRAL ANALYSIS OF SU UMa TYPE DWARF NOVAE OBSERVED WITH ROSAT." International Journal of Modern Physics D 12, no. 04 (2003): 739–55. http://dx.doi.org/10.1142/s0218271803003372.

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X-ray spectral parameters were determined for eight SU UMa type Dwarf Novae observed with the ROSAT PSPC. The raw data were fitted with various spectral models and the best fit spectral models are found to be that of Raymond–Smith and Thermal Bremsstrahlung. The best fit temperatures were estimated to be between kT ~ 1.1-1.8 keV while the Column Densities were found to be between NH ~ 2.4×1020-4.1×1020 cm -2. The estimated 0.1-2.4 keV fluxes were in the range of log FX=-13 to -11 ergs cm-2 s-1. FX/F UV and FX/F opt rates were calculated to be between ~0.09 and ~0.37. This shows that most of th

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Solanki, Ritika, Abhishek K. Srivastava, and B. N. Dwivedi. "C-1.4 class flare and an associated peculiar coronal jet." Proceedings of the International Astronomical Union 13, S340 (2018): 193–95. http://dx.doi.org/10.1017/s1743921318001904.

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AbstractUsing HINODE/XRT, GOES, SDO/AIA observations, we study a compact C-1.4 class flare outside a major sunspot of AR 12178 on 4 October 2014. This flare is associated with a peculiar coronal jet, which is erupted in two stages in the overlying corona above the compact flaring region. At the time of flare maximum, the first stage of the jet eruption occurs above the flare energy release site, and thereafter in the second stage its magneto-plasma system interacts with the overlying distinct magnetic field domain in its vicinity to build further the typical jet plasma column.

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GÜN, GÜLNUR İKİS. "THE X-RAY SPECTRAL ANALYSIS OF DWARF NOVA WZ Sge OBSERVED WITH ROSAT IN QUIESCENCE." International Journal of Modern Physics D 14, no. 07 (2005): 1185–93. http://dx.doi.org/10.1142/s0218271805006912.

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X-ray spectral parameters were determined for WZ Sge observed with the ROSAT PSPC. The raw data were fitted with various spectral models and the best fit spectral models are found to be that of Raymond–Smith and Thermal Bremsstrahlung. The best fit temperature was estimated to be kT ~ 2.17 keV while the column density was found to be NH ~ 2.8 × 1020 cm -2. The estimated 0.1–2.4 keV flux was in the range of log F = -12 ergs cm -2 s -1. WZ Sge stars show long outburst recurrence times and weak X-ray emissions during the quiescence states. It is possible to lengthen repetition cycles by decreasin

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Fraternali, Filippo. "How can star formation be sustained?" Proceedings of the International Astronomical Union 9, S298 (2013): 228–39. http://dx.doi.org/10.1017/s1743921313006418.

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AbstractThere is overwhelming evidence that the Milky Way has formed its stars at a relatively constant rate throughout the Hubble time. This implies that its stock of cold gas was not in place since the beginning but it has been acquired slowly through gas accretion. The gas accretion must have been at low metallicity in order to reconcile the metallicities observed in the disc with the predictions of chemical evolution models. But how does this gas accretion take place? I review the current evidence of gas accretion into the Milky Way and similar galaxies through the infall of cold gas cloud

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Macaulay-Lewis, Elizabeth, and Jared Simard. "From Jerash to New York." Journal of the Society of Architectural Historians 74, no. 3 (2015): 343–64. http://dx.doi.org/10.1525/jsah.2015.74.3.343.

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From Jerash to New York: Columns, Archaeology, and Politics at the 1964–65 World’s Fair analyzes the Column of Jerash, presented to New York City by the government of Jordan as a permanent memento of that country’s participation in the 1964–65 New York World’s Fair. Elizabeth Macaulay-Lewis and Jared Simard offer the first scholarly documentation and assessment of the column, which still stands at the site of the fair in Flushing Meadows Corona Park in Queens, New York, and confirm that it originated from Jerash, but not from the Temple of Artemis. The gift of the column was part of King Husse

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Christian, D. J., J. E. Edelstein, M. Mathioudakis, K. McDonald, and M. M. Sirk. "EUV Constraints on Models of Low Mass X-Ray Binaries." International Astronomical Union Colloquium 152 (1996): 425–29. http://dx.doi.org/10.1017/s0252921100036332.

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We present EUVE survey results for moderate column directions containing known low-mass X-ray binaries (LMXB). We derive Lexan band (100 Å) count rates and upper limits for nearly 40 LMXB chosen generally with EB-V ≤ 0.3. Detections include Sco X-1, Her X-1, and the GRO transient CJ0422+32. Super soft sources in the LMC yield 3 σ upper limits of ≤ 10 counts ks−1. The extrapolation of two component spectral models (such as blackbody plus thermal bremsstrahlung), are in agreement with the survey upper limits. Contemporary LMXB spectral models, which involve Comptonization in an inner disk corona

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Ratnawati, Ratnawati, Dyah Arum Kusumaningtyas, Purbo Suseno, and Aji Prasetyaningrum. "Mass Transfer Coefficient of Ozone in a Bubble Column." MATEC Web of Conferences 156 (2018): 02015. http://dx.doi.org/10.1051/matecconf/201815602015.

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The effect of flow rate of ozone-containing gas and pH on the mass transfer coefficient of ozone through water in a bubble column reactor has been studied. Ozone was generated from air using a corona discharge ozone generator. The flow rate of air was varied from 2 to 5 L min-1, while pH was varied from 4 to 10. The gas containing ozone was bubbled to the reactor containing 1.5 L of 2% KI solution. The temperature was set at 28±1ºC. The concentration of ozone was determined using titrimetric method every 5 minutes. The results show that the concentration of ozone increases with time, and it re

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Kanella, Charalambos, and Boris V. Gudiksen. "Emission of Joule heating events in simulations of the solar corona." Astronomy & Astrophysics 621 (January 2019): A95. http://dx.doi.org/10.1051/0004-6361/201833634.

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Context. Nanoscale events in cooperation with steady heating from a slow heating mechanism, such as slow-burning current-sheets, could be able to heat the corona; however, their observational traces are hard to detect via current instrumentation. After we locate heating events in magnetohydrodynamic (MHD) simulations and synthesise observational data, we extract observational signatures of small-scale events. Aims. Our mission is threefold. The first goal is to observe the manifestation of small-scale events via three observational tools: intensity maps of three extreme ultraviolet (EUV) filte

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Rahmanian, A., H. S. Ghaziaskar, and T. Khayamian. "Direct coupling of packed column supercritical fluid chromatography to continuous corona discharge ion mobility spectrometry." Journal of Chromatography A 1272 (January 2013): 126–31. http://dx.doi.org/10.1016/j.chroma.2012.11.063.

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Günther, Hans Moritz, T. Birnstiel, D. P. Huenemoerder, et al. "Optical Dimming of RW Aur Associated with an Iron-rich Corona and Exceptionally High Absorbing Column Density." Astronomical Journal 156, no. 2 (2018): 56. http://dx.doi.org/10.3847/1538-3881/aac9bd.

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Books on the topic "Corona column"

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Institutions, Johns Hopkins Medical. The Johns Hopkins white papers, 2007. Medletter Associates, 2007.

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Institutions, Johns Hopkins Medical. The Johns Hopkins white papers, 2008. Medletter Associates, 2008.

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The Johns Hopkins white papers, 2009. Medletter Associates, 2009.

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Book chapters on the topic "Corona column"

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Lee, Christine U., and James F. Glockner. "Case 9.17." In Mayo Clinic Body MRI Case Review, edited by Christine U. Lee and James F. Glockner. Oxford University Press, 2014. http://dx.doi.org/10.1093/med/9780199915705.003.0239.

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35-year-old woman with a history of IBD and moderately active IBD symptoms Coronal SSFP images (Figure 9.17.1) and coronal postgadolinium 3D SPGR images (Figure 9.17.2) show an ahaustral right and transverse colon with mild mural thickening and enhancement. Note the relatively normal appearance of the descending and sigmoid colon and the mild thickening and hyperenhancement of the terminal ileum....

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Kim, Han, and Lawrence Lenke. "Vertebral Column Resection in Adult Degenerative Scoliosis." In Adult Degenerative Scoliosis–Coronal and Sagittal Deformities: Treatment and Management. Jaypee Brothers Medical Publishers (P) Ltd., 2015. http://dx.doi.org/10.5005/jp/books/12561_17.

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Lee, Christine U., and James F. Glockner. "Case 9.18." In Mayo Clinic Body MRI Case Review, edited by Christine U. Lee and James F. Glockner. Oxford University Press, 2014. http://dx.doi.org/10.1093/med/9780199915705.003.0240.

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20-year-old man with chronic GI symptoms, including bloody diarrhea Coronal postgadolinium 3D SPGR images (Figure 9.18.1) demonstrate an ahaustral colon with mild, diffuse mural thickening and enhancement. Note the enhancing polyp in the transverse colon. Axial fat-suppressed 2D SSFP images (Figure ...

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Lee, Christine U., and James F. Glockner. "Case 9.19." In Mayo Clinic Body MRI Case Review, edited by Christine U. Lee and James F. Glockner. Oxford University Press, 2014. http://dx.doi.org/10.1093/med/9780199915705.003.0241.

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54-year-old woman with intermittent abdominal cramps, bloating, and diarrhea Coronal SSFSE images (Figure 9.19.1) demonstrate a large ovoid, T2-hyperintense lesion in the descending colon that serves as the lead point for an intussusception. Notice also a second, smaller lesion proximally in the descending colon. The lesions are hyperintense on axial T1-weighted images (...

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Panczykowski, David M., Jeremy G. Stone, and David O. Okonkwo. "The Management of Traumatic Spinal Cord Injury." In Neurocritical Care, edited by Namir Khandker and Lori A. Shutter. Oxford University Press, 2018. http://dx.doi.org/10.1093/med/9780199375349.003.0010.

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The management of traumatic spinal cord injury (SCI) requires thorough neurologic assessment and injury classification to guide treatment as well as inform prognosis. Initial radiographic evaluation is aimed at efficiently determining spinal column stability and should begin with high-quality multislice helical computed tomography imaging, including coronal and sagittal reconstructions. The primary objective of clinical SCI management is to prevent or ameliorate secondary injury caused by cardiovascular instability and/or pulmonary insufficiency, in addition to other comorbid processes common to this disease. Vigilant monitoring and treatment in the critical care setting is one of the most important means of reducing morbidity and mortality following SCI.

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Lee, Christine U., and James F. Glockner. "Case 9.3." In Mayo Clinic Body MRI Case Review, edited by Christine U. Lee and James F. Glockner. Oxford University Press, 2014. http://dx.doi.org/10.1093/med/9780199915705.003.0225.

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39-year-old man with early satiety and postprandial discomfort Coronal T1-weighted FSE images (Figure 9.3.1) show herniation of the stomach through the diaphragmatic hiatus, as well as a large quantity of peritoneal fat and a portion of the transverse colon. Large hiatal hernia with intrathoracic stomach...

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Lee, Christine U., and James F. Glockner. "Case 9.13." In Mayo Clinic Body MRI Case Review, edited by Christine U. Lee and James F. Glockner. Oxford University Press, 2014. http://dx.doi.org/10.1093/med/9780199915705.003.0235.

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86-year-old man with rectal bleeding; colonoscopy demonstrated a polyp in the ascending colon Axial SSFSE images (Figure 9.13.1) and coronal fat-suppressed SSFP images (Figure 9.13.2) show focal mural thickening in the distal ileum. The underlying lumen is dilated, and no proximal obstruction is visible. Axial (...

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Lee, Christine U., and James F. Glockner. "Case 11.15." In Mayo Clinic Body MRI Case Review, edited by Christine U. Lee and James F. Glockner. Oxford University Press, 2014. http://dx.doi.org/10.1093/med/9780199915705.003.0293.

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70-year-old woman with a history of ovarian carcinoma Coronal SSFSE images (Figure 11.15.1) demonstrate a large, predominantly solid right adnexal mass, with a simple-appearing cystic lesion in the left ovary. Note the abdominal pelvic ascites and small solid nodules between the diaphragm and liver, as well as confluent omental masses below the transverse colon on the most anterior image. Axial diffusion-weighted images (b=600 s/mm...

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Lee, Christine U., and James F. Glockner. "Case 9.28." In Mayo Clinic Body MRI Case Review, edited by Christine U. Lee and James F. Glockner. Oxford University Press, 2014. http://dx.doi.org/10.1093/med/9780199915705.003.0250.

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11-year-old boy with suspected IBD Coronal SSFSE images (Figure 9.28.1) demonstrate abnormal orientation of large and small bowel, with small bowel in the right abdomen and colon in the left abdomen. Malrotation Classic thinking regarding malrotation holds that most cases are detected within the first few months of life. However, in the new era of cross-sectional imaging for everyone, more and more adults with asymptomatic malrotations are noted and the true incidence is not entirely certain. Estimates in the literature range from 1 in 6,000 to 1 in 200 live births. Autopsy studies suggest that some form of malrotation exists in 0.5% to 1% of the population....

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"Benthic Habitats and the Effects of Fishing." In Benthic Habitats and the Effects of Fishing, edited by C. WILSON, H. ROBERTS, Y. ALLEN, and J. SUPAN. American Fisheries Society, 2005. http://dx.doi.org/10.47886/9781888569605.ch35.

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Coastal Louisiana, like many deltaic land masses, faces continued landscape alteration from natural processes and anthropogenic impacts that affect estuarine habitat. The most promising steps to slow/ mitigate these changes are river diversions that introduce freshwater and sediment to river-flanking environments and to help establish ideal salinities over historic oyster grounds. Critical to the success of these programs is a rapid and accurate means to qualify and quantify changes in oyster habitat. Digital high-resolution acoustic instrumentation linked to modern data acquisition and processing software was used to build baseline of information for evaluating future changes in shallow water bottoms, with special emphasis on oyster habitats. Application of digital side-scan sonar (100 and 500 kHz), a broad-spectrum sub-bottom profiler (4-24 kHz) for rapidly acquiring water column, surficial and shallow subsurface was used to map over 10,000 ha of water bottom. Geo-referenced side scan sonar mosaics were incorporated into a GIS data base. These data sets, “calibrated” with surface sampling, coring, and other “ground truthing” have established that numerically indexed acoustic reflectance intensities correlate closely with surface shell and oyster reef density. With image processing techniques to analyze mosaic reflectance patterns, we estimated the percent and total acreage of several bottom types.

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Conference papers on the topic "Corona column"

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Gent, Stephen P., Michael P. Twedt, and Chad R. Abrahamson. "Experimentally Investigating the Thermal Effects of Cross Flow Corn Drying." In ASME 2012 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/imece2012-86970.

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This study measured the thermal effects of corn drying within a continuous cross-flow grain dryer based on a variety of operating conditions. The dryer contains a column of grain that acts as a packed bed in which the air flows through the voids between the kernels. The study analyzed the following parameters and their effects on corn drying: dryer column thickness, air flow rate per volume of corn, air drying temperature, and incoming and outgoing corn moisture. A pilot-scale cross flow corn dryer with variable column thickness, variable drying air temperature, and variable fan speed was used

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Mattison, Lars M., Taylor N. Suess, Michael P. Twedt, and Stephen P. Gent. "Comparison of Theoretical and Experimental Corn Drying Profiles Within a Cross-Flow Column Dryer." In ASME 2013 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/imece2013-64557.

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This study compared the drying characteristics of corn within a continuous flow dryer under a variety of operating conditions. The tests were completed on a pilot scale cross flow corn dryer with variable fan speed and column thickness. The dryer column has a height of 3.35 m (132 in.), width of 0.61 m (24 in.) and variable thicknesses ranging from 0.30–0.36 m (12–14 in.). In addition, the drying air temperature and air flow rate per volume of grain were varied. An array of thermocouples measured the thermal profile of the corn bed within the dryer. The dryer exhaust was divided into four zone

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Santarsiero, Giuseppe, Angelo Masi, Andrea Digrisolo, et al. "EXPERIMENTAL AND NUMERICAL EVALUATION OF CORING EFFECTS IN REINFORCED CONCRETE COLUMNS." In 7th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering Methods in Structural Dynamics and Earthquake Engineering. Institute of Structural Analysis and Antiseismic Research School of Civil Engineering National Technical University of Athens (NTUA) Greece, 2019. http://dx.doi.org/10.7712/120119.7290.18643.

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Kamble, Rahul, Youssef Ali Kassem, Kshudiram Indulkar, et al. "Case History: Coring in ERD Well with Collision Risk Challenge and Optimization of Coring Parameters Based on Previous Coring Jobs in Carbonate Formation Alleviated Core Recovery." In International Petroleum Technology Conference. IPTC, 2021. http://dx.doi.org/10.2523/iptc-21775-ms.

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Abstract Coring during the development phase of an oil and gas field is very costly; however, the subsurface insights are indispensable for a Field Development Team to study reservoir characterization and well placement strategy in Carbonate formations (Dolomite and limestone with Anhydrite layers). The objective of this case study is to capture the successful coring operation in high angle ERD wells, drilled from the fixed well location on a well pad of an artificial island located offshore in the United Arab Emirates. The well was planned and drilled at the midpoint of the development drilli

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Suess, Taylor N., Michael P. Twedt, and Stephen P. Gent. "Experimental Investigation of a Lab-Scale, Cross-Flow Grain Dryer for Testing of Drying Efficiency and Characteristic Profiles of a Packed Bed." In ASME 2015 9th International Conference on Energy Sustainability collocated with the ASME 2015 Power Conference, the ASME 2015 13th International Conference on Fuel Cell Science, Engineering and Technology, and the ASME 2015 Nuclear Forum. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/es2015-49057.

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This study investigates the drying mechanisms of corn when it is exposed to air at elevated temperature and velocity within a cross-flow packed bed dryer. A highly-instrumented laboratory-scale experimental test dryer was constructed to batch-dry samples of 0.03 m3 (1 ft3) of high moisture corn. This is achieved using a perforated wall drying chamber with forced air at temperatures ranging from 180–240°F. The high temperature, high velocity air entering the column is supplied by a variable speed fan and a variable Wattage electric heating coil through a 0.09 m2 (1 ft2) square air duct. This de

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Collen, D. "SYNERGISM, MUTANTS AND HYBRIDS OF TISSUE-TYPE PLASMINOGEN ACTIVATO(t-PA) AND SINGLE CHAIN UROKINASE-TYPE PLASMINOGEN ACTIVATOR(scu-PA):POTENTIAL FORTHROMBOLYTIC THERAPY." In XIth International Congress on Thrombosis and Haemostasis. Schattauer GmbH, 1987. http://dx.doi.org/10.1055/s-0038-1643725.

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With the development and clinical investigation of the fibrin-specific thrombolytic agents t-PA and scu-PA, many questions relating to their optimal use remain to be answered. It is, however, becoming apparent that these agents, in addition to several advantages,suffer some shortcomings, e.g. their therapeutic dose is large and their fibrin-specificity is limited.Therefore,the quest for better thrombolytic agents remains open.We will report results of four main lines of research which we are pursuing to obtain better agents or regimens for fibrin-specific thrombolytic therapy.1. Synergism betw

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Andreini, A., M. Amerighi, L. Palanti, and B. Facchini. "LES Based CFD Investigation of the Ignition Process in Lean Spray Burner." In ASME Turbo Expo 2021: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2021. http://dx.doi.org/10.1115/gt2021-59380.

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Abstract During the last decades several new technologies were investigated in order to reduce the pollutant emissions and increase the overall engine efficiency. Unluckily, some of them including the lean direct injection spray combustion hinder the ignition performances of the combustor. Moreover, several expensive tests under very challenging operating conditions must be carried out to obtain the required certifications and assess the combustor behaviour with respect to the ignition process. Therefore, a deeper knowledge of the phenomena involved in the flame onset is mandatory to shorten t

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Van Dorsselaere, J. P. "Applications of ASTEC Integral Code in the SARNET Network." In 16th International Conference on Nuclear Engineering. ASMEDC, 2008. http://dx.doi.org/10.1115/icone16-48354.

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The ASTEC integral code is being developed by IRSN (France) and GRS (Germany) for simulation of severe accidents (SA) in Light Water reactors (LWR): safety studies including the evaluation of source term, Probabilistic Safety Analysis level 2 (PSA2) and assessment of SA management actions. It plays a key-role in the SARNET Network of Excellence on R&D on severe accidents (2004–2008) of the 6th Framework Programme of the European Commission. A substantial effort is being made to disseminate ASTEC and to perform jointly-executed research activities with the ultimate objective of providing ph

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Reports on the topic "Corona column"

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Water quality and supply on Cortina Rancheria, Colusa County, California. US Geological Survey, 1989. http://dx.doi.org/10.3133/wri894004.

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