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Bibliografias temáticas / Mr 2600

Literatura científica selecionada sobre o tema "Mr 2600"

Autor: Grafiati

Publicado: 25 de julho de 2024

Última modificação: 29 de julho de 2024

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Artigos de revistas sobre o assunto "Mr 2600"

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Nikolaev, A. K., E. S. Demenin e K. I. Plotnikova. "Research of Application of Anti-Turbulent and Depressor Additives in Pipeline Transport of High Viscosity Oils". Oil and Gas Technologies 137, n.º 6 (2021): 54–56. http://dx.doi.org/10.32935/1815-2600-2021-137-6-54-56.

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The use of anti-turbulent and depressant additives makes it possible to increase the efficiency of oil pipelines transporting high-viscosity oil. In this method, the principle of increasing the efficiency of transportation is based on reducing the hydraulic resistance and increasing the fluidity of oil. The work carried out a theoretical study of the existing types of anti-turbulent and depressant additives. This article presents an experimental study of the effect of the MR 1088 depressant additive on an oil sample from the Usa – Ukhta main oil pipeline.

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Negrine, R., e P. Bull. "'Mr Malik, to Represent the People of Dewsbury Do You Need a 2600 Cinema System Paid for by the Taxpayer?' An Analysis of British Television News Coverage of the 2009 MPs' 'Expenses Scandal'". Parliamentary Affairs 68, n.º 3 (25 de maio de 2014): 573–91. http://dx.doi.org/10.1093/pa/gsu009.

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Lilley, Kate, Andrew Swayne, Emily Watson, Rachel Kee, David Wong, Alexander Lehn, Helen Brown et al. "058 ANTI-CASPR2-ANTIBODY associated encephalitis in a 63-year old male with chronic lymphocytic leukaemia". Journal of Neurology, Neurosurgery & Psychiatry 89, n.º 6 (24 de maio de 2018): A24.1—A24. http://dx.doi.org/10.1136/jnnp-2018-anzan.57.

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IntroductionThis case from a tertiary neurology centre reports a novel association between the emerging clinical entity of anti-contactin associated protein-2 (CASPR-2) antibody encephalitis and chronic lymphocytic leukaemia (CLL).CaseWe describe a 63 year old Maori male truck-driver who presented with progressive altered personality, speech, cognition and perception over 9 months. The patient also developed choreiform movements, broad-based gait, incontinence, sleep apnoea with type 2 respiratory failure and episodic loss of consciousness. 12 months prior, he had been diagnosed with low-risk CLL, for which he remained untreated. MRI of the brain revealed mid-sagittal bilateral mid-temporal T2/FLAIR hyperintensities. Cerebrospinal fluid examination showed a mononuclear pleocytosis (WCC 270×10^6/L) with 15% of these CD5/CD19/CD23 positive and 92% CD3/CD5 positive CD 19 negative on flow cytometry, protein was also elevated at 2600 mg/L. The interplay between CLL and inflammation is uncertain. Anti-Caspr2-antibody was identified in CSF and serum. The patient was treated with a combination of fludarabine, cyclophosphamide, rituximab, dexamethasone and intravenous immunoglobulin (IVIG). Clinical status improved and antibody titre decreased from 580 to 241 pM in three weeks and to 55pM (negative <85 pM) at five months. Symptoms worsened when IVIG doses were missed. He returned home after inpatient rehabilitation, showed striking clinical improvement at 12 month follow-up and continues on maintenance IVIG therapy.ConclusionWhilst paraneoplastic VGKC encephalitis has been described associated with a number of malignancies, this is the first reported case of CASPR-2 antibody present in association with CLL.References. Van Sonderen A, Petit-Pedrol M, Dalmau J, Titulaer MJ. The value of LGI1, Caspr2 and voltage-gated potassium channel antibodies in encephalitis. Nature Reviews Neurology2017;13(5):290–301.. Nogai H, Israel-Willner H, Zschenderlein R, Pezzutto A. Improvement in Paraneoplastic Limbic Encephalitis after Systemic Treatment with Rituximab in a Patient with B-Cell Chronic Lymphocytic Leukaemia. Case Reports in Haematology2013;2013:Article ID958704.. Van Sonderen A, Ariño H, Petit-Pedrol M, et al. The Clinical Spectrum of Caspr2 antibody-associated disease. Neurology2016;87:521–528.. Gultekin SH, Rosenfeld MR, Voltz R, Eichen J, et al. Paraneoplastic limbic encephalitis: Neurological symptoms, immunological findings and tumour association in 50 patients. Brain2000;123:1481–1494.

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Wagner, B. J., e J. W. Margolis. "Common epitopes of bovine lens multicatalytic-proteinase-complex subunits". Biochemical Journal 257, n.º 1 (1 de janeiro de 1989): 265–69. http://dx.doi.org/10.1042/bj2570265.

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Component polypeptides of both the bovine lens and pituitary multicatalytic proteinase complexes demonstrate different immunoreactivities with a polyclonal antiserum raised against the purified pituitary enzyme. Four (Mr 24000, 26000, 34000 and 38000) of eight bands that have been resolved by SDS/polyacrylamide-gel electrophoresis are stained in immunoblot experiments. Monospecific antibodies obtained from this antiserum by affinity purification from the 38000- and 34000-Mr bands of the lens enzyme bound equally well to either band, but showed little or no binding to the 26000- and 24000-Mr bands upon immunoblotting. Antibody affinity-purified from the 24000-Mr band showed comparable binding to the 24000-, 34000- or 38000-Mr band. One explanation of these results is that the 24000-Mr polypeptide is derived from the higher-Mr polypeptide(s) and has lost some of the common immunodeterminants.

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BRUSCHI, Mireille, Gisèle LEROY, Jacques BONICEL, Daniel CAMPESE e Alain DOLLA. "The cytochrome c3 superfamily: amino acid sequence of a dimeric octahaem cytochrome c3 (Mr 26,000) isolated from Desulfovibrio gigas". Biochemical Journal 320, n.º 3 (15 de dezembro de 1996): 933–38. http://dx.doi.org/10.1042/bj3200933.

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Cytochrome c3 (Mr 26000) isolated from Desulfovibrio gigas is a dimeric cytochrome consisting of two identical subunits of 109 amino acids, each of which contains four haem groups. On the basis of its amino acid sequence, this cytochrome clearly belongs to the cytochrome c3 superfamily, and will be classified in class III of the c-type cytochromes as defined by Ambler [(1980) in From Cyclotrons to Cytochromes (Robinson, A. B. and Kaplan, N. O., eds.), pp. 263–279, Academic Press, London]. It contains ten cysteine and nine histidine residues in each subunit, and eight cysteines and eight histidines linked to the four haem groups were found to be invariant on alignment of all known cytochrome c3 sequences. Two intermolecular disulphide bridges have been determined between cysteine residues 5 and 46 of the two monomers. Cytochrome c3 (Mr 26000) from D. gigas is clearly different from cytochrome c3 (Mr 13000) from the same strain, with which it shows only 27% sequence identity. Compared with cytochrome c3 (Mr 26000) from D. desulfuricans Norway, the three-dimensional structure of which has been determined, 26.95% of the residues have been conserved. In the enzyme from D. desulfuricans Norway, hydrophobic interactions have been described across the dimer interface. Residues involved in similar interactions seem to be well conserved in the equivalent D. gigas cytochrome. This sequence provides structural data to allow specification of this new subclass of polyhaem cytochromes. Furthermore, D. gigas cytochrome c3 (Mr 26000) is the first polyhaem cytochrome shown to contain two disulphide bridges linking two identical subunits, which could induce more rigid folding. The folding and the evolution of this family of polyhaem cytochromes are discussed.

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Buonincontri, Guido, e Stephen J. Sawiak. "MR fingerprinting with simultaneous B1 estimation". Magnetic Resonance in Medicine 76, n.º 4 (28 de outubro de 2015): 1127–35. http://dx.doi.org/10.1002/mrm.26009.

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Liu, Yifei, Thomas J. Royston, Dieter Klatt e E. Douglas Lewandowski. "Cardiac MR elastography of the mouse: Initial results". Magnetic Resonance in Medicine 76, n.º 6 (9 de janeiro de 2016): 1879–86. http://dx.doi.org/10.1002/mrm.26030.

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Michielsen, Katrijn, Joke Meersschaert, Frederik De Keyzer, Mieke Cannie, Jan Deprest e Filip Claus. "MR volumetry of the normal fetal kidney: reference values". Prenatal Diagnosis 30, n.º 11 (23 de agosto de 2010): 1044–48. http://dx.doi.org/10.1002/pd.2607.

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Dittmann, Florian, Sebastian Hirsch, Heiko Tzschätzsch, Jing Guo, Jürgen Braun e Ingolf Sack. "In vivo wideband multifrequency MR elastography of the human brain and liver". Magnetic Resonance in Medicine 76, n.º 4 (20 de outubro de 2015): 1116–26. http://dx.doi.org/10.1002/mrm.26006.

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Dragomir, S. S. "Second derivative Lipschitz type inequalities for an integral transform of positive operators in Hilbert spaces". Extracta Mathematicae 37, n.º 2 (1 de dezembro de 2022): 261–82. http://dx.doi.org/10.17398/2605-5686.37.2.261.

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For a continuous and positive function w (λ), λ > 0 and µ a positive measure on (0, ∞) we consider the following integral transform D (w, µ) (T ) := ∫0∞w (λ) (λ + T ) −1 dµ (λ) , where the integral is assumed to exist for T a positive operator on a complex Hilbert space H. We show among others that, if A ≥ m 1 > 0, B ≥ m 2 > 0, then ||D (w, µ) (B) − D (w, µ) (A) − D (D (w, µ)) (A) (B − A)|| ≤|B − A|2×[D(w,µ)(m2)−D(w,µ)(m1)−(m2- m1)D’(w,µ)(m1)]/(m2−m1)2 if m1≠m2, ≤ D’’(w, µ)(m)/2 if m1=m2=m, where D (D (w, µ)) is the Fréchet derivative of D (w, µ) as a function of operator and D’’(w, µ) is the second derivative of D (w, µ) as a real function. We also prove the norm integral inequalities for power r ∈ (0, 1] and A, B ≥ m > 0, ||∫01((1−t)A+tB)r−1dt−((A+B)/2)r−1|| ≤ (1−r) (2−r) mr−3||B−A||2/24 and ||((Ar−1+Br−1 )/2) − ∫01((1−t) A+tB)r−1dt|| ≤ (1−r) (2−r) mr−3||B − A||2/12.

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Mais fontes

Teses / dissertações sobre o assunto "Mr 2600"

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Brennan, Anne Eagle Scott. "Roxie, Mr. Bingo, Kewl and The Gate: Street Gangs in Kinston/ Participating in One City's Game of Chance to Save Itself". [Greenville, N.C.] : East Carolina University, 2010. http://hdl.handle.net/10342/2670.

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Winter, Lukas. "Detailing radio frequency controlled hyperthermia and its application in ultrahigh field magnetic resonance". Doctoral thesis, Humboldt-Universität zu Berlin, Mathematisch-Naturwissenschaftliche Fakultät I, 2014. http://dx.doi.org/10.18452/17012.

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Die vorliegende Arbeit untersucht die grundsätzliche Machbarkeit, Radiofrequenzimpulse (RF) der Ultrahochfeld (UHF) Magnetresonanztomographie (MRT) (B0≥7.0T) für therapeutische Verfahren wie die RF Hyperthermie oder die lokalisierte Freigabe von Wirkstoffträgern und Markern zu nutzen. Im Rahmen der Arbeit wurde ein 8-Kanal Sened/Empfangsapplikator entwickelt, der bei einer Protonenfrequenz von 298MHz operiert. Mit diesem weltweit ersten System konnte in der Arbeit experimentell bewiesen werden, dass die entwickelte Hardware sowohl zielgerichtete lokalisierte RF Erwärmung als auch MR Bildgebung und MR Thermometrie (MRTh) realisiert. Mit den zusätzlichen Freiheitsgraden (Phase, Amplitude) eines mehrkanaligen Sendesystems konnte aufgezeigt werden, dass der Ort der thermischen Dosierung gezielt verändert bzw. festgelegt werden kann. In realitätsnahen Temperatursimulationen mit numerischen Modellen des Menschen, wird in der Arbeit aufgezeigt, dass mittels des entwickelten Hybridaufbaus eine kontrollierte und lokalisierte thermische Dosierung im Zentrum des menschlichen Kopfes erzeugt werden kann. Nach der erfolgreichen Durchführung dieser Machbarkeitsstudie wurden in theoretischen Überlegungen, numerischen Simulationen und in ersten grundlegenden experimentellen Versuchen die elektromagnetischen Gegebenheiten von MRT und lokal induzierter RF Hyperthermie für Frequenzen größer als 298MHz untersucht. In einem Frequenzbereich bis zu 1.44GHz konnte der Energiefokus mit Hilfe spezialisierter RF Antennenkonfigurationen entscheidend weiter verkleinert werden, sodass Temperaturkegeldurchmesser von wenigen Millimetern erreicht wurden. Gleichzeitig konnte gezeigt werden, dass die vorgestellten Konzepte ausreichende Signalstärke der zirkular polarisierten Spinanregungsfelder bei akzeptabler oberflächlicher Energieabsorption erzeugen, um eine potentielle Machbarkeit von in vivo MRT bei B0=33.8T oder in vivo Elektronenspinresonanz (ESR) im L-Band zu demonstrieren.
The presented work details the basic feasibility of using radiofrequency (RF) fields generated by ultrahigh field (UHF) magnetic resonance (MR) (B0≥7.0T) systems for therapeutic applications such as RF hyperthermia and targeted drug delivery. A truly hybrid 8-channel transmit/receive applicator operating at the 7.0T proton MR frequency of 298MHz has been developed. Experimental verification conducted in this work demonstrated that the hybrid applicator supports targeted RF heating, MR imaging and MR thermometry (MRTh). The approach offers extra degrees of freedom (RF phase, RF amplitude) that afford deliberate changes in the location and thermal dose of targeted RF induced heating. High spatial and temporal MR temperature mapping can be achieved due to intrinsic signal-to-noise ratio (SNR) gain of UHF MR together with the enhanced parallel imaging performance inherent to the multi-channel receive architecture used. Temperature simulations in human voxel models revealed that the proposed hybrid setup is capable to deposit a controlled and localized RF induced thermal dose in the center of the human brain. After demonstrating basic feasibility, theoretical considerations and proof-of-principle experiments were conducted for RF frequencies of up to 1.44GHz to explore electrodynamic constraints for MRI and targeted RF heating applications for a frequency range larger than 298MHz. For this frequency regime a significant reduction in the effective area of energy absorption was observed when using dedicated RF antenna arrays proposed and developed in this work. Based upon this initial experience it is safe to conclude that the presented concepts generate sufficient signal strength for the circular polarized spin excitation fields with acceptable specific absorption rate (SAR) on the surface, to render in vivo MRI at B0=33.8T or in vivo electron paramagnetic resonance (EPR) at L-Band feasible.

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Ledermüller, Karl. "Text Mining Supported Skill Monitoring - A Framework for Analyzing Job Announcements with Special Focus on Curriculum Planning and Spatial Applications". Thesis, 2011. http://epub.wu.ac.at/3174/1/skillmonitoring.pdf.

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In our fast changing global village, the wealth of nations and the wealth of individuals are to some extent determined by a production factor which is called human capital. Nations are seen to be more competitive and therefore create a higher level of wealth if they have a better educated workforce. On an individual basis human capital, which is seen as ones skills and competencies, also define the success on the labor market. This success on the labor market generates individual wealth. The probability of an individual receiving a proper job is assumed to be higher, if the skills, competencies and signals of the employee reflect the skills, competencies and signals required at the job market. This dissertation wants to explore the required skills, competencies and signals by screening job announcements and analyze them via text mining techniques. (author's abstract) Part I chapter I gives an overview of relevant literature, which deals with the economic dimension of knowledge. Starting from the idea of the knowledge based economy the question: "What is useful knowledge?" is raised and discussed with the ideas of Mokyr (2005). These ideas form the framework of the heuristic model for job announcement based competence classification (see chapter: 2.5). This classification is the foundation of the first application of curricular investigation 8. To fill the framework with content, the historical development of the role of skills, competencies and signals is shortly discussed. Starting with the competence and skill dimension in the famous book "Wealth of Nations" from Smith (1868) the dissertation focuses on the 1960's where Schultz (1961) (re-) invented the idea of human capital and the importance of investing in this factor. Theodore W. Schultz received a nobel prize for his ideas. Additionally disparities and similarities according to the approaches of Bourdieu (2005) as a famous sociologist and nobel laureate Spence (1973) are disputed. Chapter 2 debates personal competence from an educational perspective. After discussing "What is educational quality" and "Who is interested in high quality education" it is argued, that employability seems to be important for all stakeholder groups. Basic concepts of employability skills and competencies are defined. Theory comparison in chapter 2.5 leads to a heuristic model for job announcement based competence classification. However, this model could be applied for different problems. Chapter 3 defines the role of the job announcements (and its contained skills and competencies) and critical assumptions which lie behind the analysis of job announcements. Part II explains the used methodology by explaining how the data were harvested from the internet (chapter 4). Data were pre- and post processed (chapter 5) and job announcements were connected with their regional origin (chapter 7). Part III shows two possible applications. The first application is a text mining based context analysis of financial related job announcements to help finding strategies to support curriculum planning focused on employability (see chapter 8). The second application shows (regional) credential inflation effects based on the core/periphery model of Krugman (1991) which are seen as an "adverse reaction" of the knowledge based economy idea (see chapter 9). (author's abstract)

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Livros sobre o assunto "Mr 2600"

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Constructing Grounded Theory. SAGE Publications, Limited, 2014.

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Constructing Grounded Theory. SAGE Publications, Limited, 2024.

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Constructing Grounded Theory. SAGE Publications, Limited, 2024.

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Constructing grounded theory. SAGE Publications, 2014.

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Capítulos de livros sobre o assunto "Mr 2600"

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Oza, Shraddha D., e K. R. Joshi. "Performance Analysis of Denoising Filters for MR Images". In Advances in Computing Applications, 87–96. Singapore: Springer Singapore, 2016. http://dx.doi.org/10.1007/978-981-10-2630-0_6.

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Pathak, Arvind P., Marie-France Penet e Zaver M. Bhujwalla. "MR Molecular Imaging of Tumor Vasculature and Vascular Targets". In Tissue-Specific Vascular Endothelial Signals and Vector Targeting, Part B, 1–30. Elsevier, 2010. http://dx.doi.org/10.1016/s0065-2660(10)69010-4.

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Symson, Joseph. "[260] To: Mr. Thomas Bayly, merchant in Hoxton, London; Kendal, 19 January, 1711[12]". In Records of Social and Economic History: New Series, Vol. 34: ‘An Exact and Industrious Tradesman’: The Letter Book of Joseph Symson of Kendal, 1711–1720, editado por S. D. Smith. British Academy, 2002. http://dx.doi.org/10.1093/oseo/instance.00164989.

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Trabalhos de conferências sobre o assunto "Mr 2600"

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"Behavior of the MR Sandwich Panel in Flexure". In SP-260: Fabrication Technology for Thin Cementitious Products. American Concrete Institute, 2009. http://dx.doi.org/10.14359/56626.

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Ma, Yanhong, Haixiong Zhu, Chan Wang, Hengwen Qiao e Jie Hong. "Compression Mechanics of the SC-MR Support for Rotor System". In ASME Turbo Expo 2014: Turbine Technical Conference and Exposition. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/gt2014-26006.

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The elastic damping support for rotor system which is combined of squirrel cage and metal rubber (also called metal mesh) and named SC-MR support for short is presented here. The SC-MR support is designed for flexible rotor system in turbo machineries, such as turbo-pumps and aeroengines. The SC-MR support realizes the function of both the elastic support and damping, which can provide a wonderful solution to the vibration problems. The squirrel cage supplies the main support stiffness and the Metal Rubber supplies the main damping and parallel stiffness. By controlling the parameters of the squirrel cage and the Metal Rubber, the stiffness and damping of the support could be designed to certain ranges. The stiffness of the squirrel cage and the SC-MR support was simulated by FEM models and the values are 2.13e7 N/m and 2.51e7 N/m respectively. The squirrel cage supplies more than 80% of the stiffness and the MR supplies minor parallel stiffness, which perfectly meets the design purpose. The effects of the installation state on the mechanical characteristics of the support were researched by compression tests. The Quasi-static tests on the squirrel cage show that its stiffness is 2.19e7 N/m, almost the same as simulated result. The compression tests on the SC-MR support were conducted while the Metal rubber was assembled with several prescribed prestrains. The results show that the support stiffness exhibits an increasing trend with either the radial prestrain or the axial prestrain, and it is more sensitive to the former one. The damping also appears to show an increasing trend with the prestrains and the loss factor is always larger than 0.02, distributing in range 0.02–0.08. The parallel stiffness of the MR increases severely with the prestrain. Therefore, the effect of the installation should be taken into account during the structure design process.

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Norris, James A., e Mehdi Ahmadian. "Behavior of Magneto-Rheological Fluids Subject to Impact and Shock Loading". In ASME 2003 International Mechanical Engineering Congress and Exposition. ASMEDC, 2003. http://dx.doi.org/10.1115/imece2003-42891.

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Investigations on the design of controllable magneto-rheological (MR) fluid devices have focused heavily on low velocity and frequency applications. The extensive work in this area has led to a good understanding of MR fluid properties at low velocities and frequencies. However, the issues concerning MR fluid behavior in impact and shock applications are relatively unknown. To investigate MR fluid properties in this regime, a drop-tower was developed to subject MR fluid dampers to impulsive loads. The drop-tower design uses a guided drop-mass, which is released from variable heights to achieve different impact energies. The nominal drop-mass is 55 lb and additional weight may be added to reach a maximum of 500 lb. The nominal drop-mass of 55 lb was used throughout this study. Five drop-heights were investigated, 12, 24, 48, 72 and 96 inches, corresponding to impact velocities of 86, 127, 182, 224 and 260 in/s. Two fundamental MR damper configurations were tested, a single-stage, double-ended piston and a two-stage, mono-tube with nitrogen accumulator. Both dampers operate in the valve flow mode and contain MRF-128 TD fluid from Lord Corporation. The results indicate that the two damper configurations exhibit different force-displacement characteristics during impulsive loading. For the single-stage, double-ended damper, the peak force occurs close to the beginning of the impact. Conversely, the two-stage, mono-tube damper does not reach the peak force until after the nitrogen accumulator bottoms out. To verify this behavior, a theoretical model of the accumulator is derived and compared to the experimental data. The results also show that for a given impact velocity, the peak force does not depend on the current supplied to the damper. Since increasing the supply current causes an increase in the apparent yield stress, it was anticipated that the peak force would depend on the supply current as well. This disagreement is hypothesized to be the result of the fluid inertia preventing the fluid from accelerating fast enough to accommodate the rapid piston displacement. Thus, the peak force is primarily attributed to fluid compression, rather than the resistance to flow associated with the fluid passing through the magnetic field. It is important to note that this study is in its early stages and only preliminary conclusions are presented. Follow up publications will include additional results and modeling, and attempt to relate device design and MR fluid properties to dynamic behavior.

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Ge, Xueli, Zhongxiao Zhang, Xinglei Hu, Xiaojiang Wu e Jian Zhang. "New Correlations of Weighted Sum of Grey Gases Model Applicable to Computational Fluid Dynamics for Oxy-Fuel Combustion and Implementation". In ASME 2017 Power Conference Joint With ICOPE-17 collocated with the ASME 2017 11th International Conference on Energy Sustainability, the ASME 2017 15th International Conference on Fuel Cell Science, Engineering and Technology, and the ASME 2017 Nuclear Forum. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/power-icope2017-3171.

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Radiation heat transfer is the dominant model of heat transfer in the large scale industry boiler, especially in oxy-fuel combustion condition. Radiative properties of combustion gases and char oxidation in the oxy-fuel condition are obviously different from the air-fuel combustion, due to the N2 replaced by CO2. Through researchers proposed many helpful correlations based on the air-fuel Weighted-Sum-of-Grey-Gases-Model (WSGGM), the absorption coefficients were commonly constant or correlations were discrete by the classical molar ratio of H2O to CO2 (MR), which were mismatching the continuous value of MR in the real furnace. Meanwhile, the discrete MR is also not applied to the computational fluid dynamics (CFD). In this paper, new correlations for the WSGGM are determined as polynomial function of MR and temperature, which can be conveniently employed in Fluent by the form of user-defined-functions in C language. Parameters of model are fitted by total emittances calculated based on the timely HITEMP 2010 database. New correlations are validated by comparing the emittances with line-by-line calculations and other classical models. New correlations are employed in the CFD for the real industrial oxy-fuel combustion with the temperature range of 400–2600K, pressure path-length between 0.01 and 60 bar m. Several assumed test cases have been investigated to evaluate the accuracy of the models. Modified correlations for WSGGM give a better accuracy of the total emittances for the mixed combustion gases in the real furnace. New models including radiative and chemical reaction mechanisms have been employed to CFD modeling of combustion process for a tangentially fired 300MWe utility boiler. The industrial boiler is modeled by a partition meshing method with the hexahedral structured mesh. Due to the atmosphere shift from N2 to CO2, three aspects are essential to be modified for oxy-fuel: radiation model, char oxidation model and homogeneous volatile oxidation model. To investigate the performance of the furnace, air-fuel combustion selected as the conference, three other cases employed are defined as Oxy21 (vol21%, O2), Oxy26 (vol26, O2) and Oxy29 (vol29%, O2), respectively. Temperature profile and heat transfer are investigated for the different test cases. Meanwhile, the simulation and calculation heat transfer in the furnace are also compared. The results show the new modified simulation has an approximate 4–11% lower than the thermodynamic calculation. To achieve an identical heat flux and temperature distributions with the air-fuel case, the molar fraction 29% of O2 is essential for the selected implementation. (CSPE)

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Diniz, Camila Leal, Rosemar Macedo Sousa Rahal, Ruffo de Freitas-Júnior, Ilse Franco de Oliveira, Cristina Pinto Naldi Ruiz, Paulinelly Messias de Almeida, Rosangela da Silva Correa e Lizzi Naldi Ruiz. "Correlation of age group and characterization of findings breast magnetic resonance imaging with BI-RADS® of high and low suspicion". In Brazilian Breast Cancer Symposium 2023. Mastology, 2023. http://dx.doi.org/10.29289/259453942023v33s1075.

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Objective: The objective of this study was to analyze magnetic resonance imaging (MRI) BI-RADS® using criteria of high and low suspicion in relation to age group variables and imaging findings. Methodology: This is a cross-sectional retrospective study of analysis of breast MRI exams in an imaging clinic in the city of Goiânia, GO, from 2021 to 2022. The sample was divided according to the BI-RADS® classification into two groups, one with low suspicion for classifications 1, 2, and 3 and another one of high suspicion for classifications 0, 4, 5, and 6. The sample profile of patients with BI-RADS® MR low and high suspicion was tested by applying Pearson’s chi-square test, relative frequency, and absolute frequency, analyzed using the Statistical Package for Social Science (SPSS 26.0) with a significance of 5% (p<0.05). This study was approved by the research ethics committee. Results: A total of 307 exams with indications for MRI were evaluated. Data on the age of patients inferred that the mean was 49.1 years (standard deviation 11.5) and ranged from 24 to 83 years, and 61 (19.9%) were aged ≥60 years. When evaluating the BI-RADS® MRI results with the low and high suspicion criteria, women aged 60 years or older had a significant prevalence (p=0.03) of high suspicion. The concordant findings described in the examination report were breast lump (p<0.01), cyst (p<0.01), nonspecific enhancement (p<0.01), post-surgical alterations (p <0.01), fold of the implant (p=0.04), and inflammatory process (p=0.04), prevailing findings nodule (77%) for high suspicion and cyst (11.5%) for low suspicion. Conclusion: The association of BI-RADS® of high suspicion with age showed that patients aged ≥60 years are more likely to have high-risk lesions; in the exams, the breast lumps presented concordance for high suspicion and the cysts concordance for low suspicion.

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Baglia, F. A., D. Sinha e P. N. Walsh. "STRUCTURAL AND FUNCTIONAL CHARACTERIZATION OF DOMAINS IN THE HEAVY CHAIN REGION OF FACTOR XI (XIa) INVOLVED IN BINDING HIGH MOLECULAR WEIGHT KININOGEN AND FACTOR IX". In XIth International Congress on Thrombosis and Haemostasis. Schattauer GmbH, 1987. http://dx.doi.org/10.1055/s-0038-1642804.

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Previous studies from our laboratory (J. Biol. Chem. 260:10714,1985; J. Clin. Invest. 78:1631,1986) provide evidence that a monoclonal antibody (3C1) directed against the heavy chain region of factor XIa (FXIa) recognizes an epitope near a substrate binding site for FIX and a binding site for high molecular weight kininogen (HMWK). The present studies were carried out to determine whether these two sites are identical or different. Another heavy-chain-specific murine monoclonal antibody (5F7) was found to recognize an epitope distinct from that recognized by 3C1 since 3C1 did not compete with 5F7 for binding to FXI in a solid-phase radioimmunoassay. Antibody 3C1 was a competitive inhibitor of F-XIa-catalyzed F-IX activation, assayed by the release of a 3H-labeled activation peptide from FIX, whereas 5F7 had no effect on F—IX activation by FXIa. In contrast, 5F7 (which also inhibited F-XIIa-catalyzed F-XI activation in the presence of HMWK and kaolin) completely blocked FXI binding to immobilized HMWK at concentrations 1,000-fold lower than 3C1. Finally, HMWK had no effect on F-IX activation by FXIa. We therefore conclude that two separate and distinct domains are present in the heavy-chain region of FXI, one of which is a substrate binding site for FIX and the other a binding site for HMWK. A 15,000 Mr peptide containing the HMWK binding site was isolated using cyanogen bromide digests of factor XI which were bound to and eluted from a ,5F7 antibody affinity column and further purified using high performance liquid chromatography. Gas phase sequencing studies are in progress to characterize this peptide and place its sequence within the known structure of the heavy chain of FXIa. In conclusion, our antibodies have defined two domains within the heavy chain region of FXI: one defined by 5F7 is near the HMWK binding site, whereas the other, recognized by 3C1, is a substrate binding site for FIX. Finally, a peptide domain in the heavy chain of FXI that compriaes the HMWK binding site has been identified and isolated.

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