Search results for: Pavel Brož

Items from 1 to 16 out of 16 results

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Thermodynamic assessment and experimental study of the Al-Ag-Ga phase diagram

Milena Premović, Pavel Brož, Duško Minić, Dragan Manasijević, more

Thermochimica Acta > 2016 > 646 > C > 39-48

Ternary Al-Ag-Ga system was assessed both theoretically using thermodynamic calculations of phase equilibria based on CALPHAD method and experimentally using differential thermal analysis (DTA), scanning electron microscopy (SEM) combined with energy dispersive spectrometry (EDS) and X-ray powder diffraction (XRD) analysis. The calculated phase transition temperatures, isothermal sections at 300 and...

article

[O71] Study of thermal stability of advanced thermoelectrics by means of thermal analysis and Knudsen effusion mass spectrometry

Pavel Broz, Frantisek Zelenka, Jan Vřešťál, Jiri Bursik, more

Calphad > 2015 > 51 > C > 367

article

[P106] Spinodal decomposition of Ag-Cu nanoparticles

Jiri Sopousek, Ondrej Zobac, Pavel Broz, Jiri Bursik, more

Calphad > 2015 > 51 > C > 406-407

article

Temperature stability of AgCu nanoparticles

Jiří Sopoušek, Ondřej Zobač, Vít Vykoukal, Jiří Buršík, more

Journal of Nanoparticle Research > 2015 > 17 > 12 > 1-7

The colloidal solutions of the Ag–Cu nanoparticles (NPs, 10–32 nm) were prepared by solvothermal reactions. The samples of dried AgCu NPs and the resulting microstructures after heat treatment in air were investigated by various methods including electron microscopy (TEM, SEM) and high-temperature X-ray powder diffraction (HTXRD). The AgCu randomly mixed, Cu-rich, and Ag-rich face centred cubic crystal...

article

Correlation of skeletal muscle blood oxygenation level‐dependent MRI and skin laser doppler flowmetry in patients with systemic sclerosis

Sasan Partovi, Anja‐Carina Schulte, Daniel Staub, Bjoern Jacobi, more

Journal of Magnetic Resonance Imaging > 40 > 6 > 1408 - 1413

PurposeTo investigate the origin of skeletal muscle BOLD MRI alterations in patients with systemic sclerosis (SSc) by correlating BOLD MRI T2* signal of calf muscles with microcirculatory blood flow of calf skin measured by laser Doppler flowmetry (LDF). Materials and MethodsBOLD MRI (3T) and LDF measurements were performed in 12 consecutive SSc patients (6 women, 6 men; mean age 54.0 ± 10.0 years)...

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Cu–Ni nanoalloy phase diagram – Prediction and experiment

Jiri Sopousek, Jan Vrestal, Jiri Pinkas, Pavel Broz, more

Calphad > 2014 > 45 > C > 33-39

The Cu–Ni nanoalloy phase diagram respecting the nanoparticle size as an extra variable was calculated by the CALPHAD method. The samples of the Cu–Ni nanoalloys were prepared by the solvothermal synthesis from metal precursors. The samples were characterized by means of dynamic light scattering (DLS), infrared spectroscopy (IR), inductively coupled plasma optical emission spectroscopy (ICP/OES),...

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Correlation of muscle BOLD MRI with transcutaneous oxygen pressure for assessing microcirculation in patients with systemic sclerosis

Sasan Partovi, Markus Aschwanden, Bjoern Jacobi, Anja‐Carina Schulte, more

Journal of Magnetic Resonance Imaging > 38 > 4 > 845 - 851

PurposeTo prospectively compare calf muscle BOLD MRI with transcutaneous oxygen pressure (TcPO₂) measurement in patients with systemic sclerosis (SSc) and healthy volunteers and thereby get insight into the pathogenesis of vasculopathy in this connective tissue disorder. Materials and MethodsTwelve patients with SSc (6 women and 6 men, mean age 53.5 ± 10.0 years) and 12 healthy volunteers (4 men...

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A summary of the CALPHAD XXXVIII conference

Jan Vrestal, Ales Kroupa, Pavel Broz

Calphad > 2010 > 34 > 1 > 138-158

CALPHAD XXXVIII was held in Prague on 17–22 May 2009, organized jointly by Masaryk University and the Institute of Physics of Materials ASCR. There were 149 active participants who presented 63 oral contributions and 87 posters. A “Young Scientists Session” was organized on the evening of 18 May with L. Kaufman and Y.M. Muggianu as invited speakers. The presentations and posters covered a broad spectrum...

article

Constitution of Ni–Al–Ti system studied by scanning electron microscopy

Jiří Buršík, Pavel Brož

Intermetallics > 2009 > 17 > 8 > 591-595

The Ni–Al–Ti system is one of the key model systems for technically important materials based on nickel and titanium aluminides. A recent critical literature review by Schuster stated a lack of experimental data apart from corners of the composition triangle. This work is focused on several alloys of Ni–Al–Ti system from the central part of the composition triangle, where numerous intermetallic phases...

article

Cell-Specific Integration of Artificial Organelles Based on Functionalized Polymer Vesicles

Nadav Ben-Haim, Pavel Broz, Stephan Marsch, Wolfgang Meier, more

Nano Letters > 2008 > 8 > 5 > 1368 - 1373

article

Targeting of Vulnerable Plaque Macrophages with Polymer-Based Nanostructures

Pavel Broz, Stephan Marsch, Patrick Hunziker

Trends in Cardiovascular Medicine > 2007 > 17 > 6 > 190-196

Macrophages are key cellular elements of atherosclerotic plaque pathogenesis and are a significant risk factor for plaque rupture. Current diagnostic techniques for the detection of plaque macrophages are often limited by insufficient sensitivity and selectivity and have not reached broad clinical practice until now. Supramolecular nanometer-sized structures such as conjugates, nanoparticles, micelles,...

article

Toward Intelligent Nanosize Bioreactors: A pH-Switchable, Channel-Equipped, Functional Polymer Nanocontainer

Pavel Broz, Sergey Driamov, Joerg Ziegler, Nadav Ben-Haim, more

Nano Letters > 2006 > 6 > 10 > 2349 - 2353

article

Microstructure and phase equilibria in Ni–Al–Cr–Co alloys

Jiří Buršík, Pavel Brož, Jiří Popovič

Intermetallics > 2006 > 14 > 10-11 > 1257-1261

Several alloys of Ni–Al–Cr–Co system with Ni content close to 60at.% were prepared and annealed at 1273 and 1373K with the aim to reach the state of thermodynamic equilibrium. The microstructure of quenched samples was studied by means of scanning and transmission electron microscopy. Phases equilibrated at high temperature were identified using selected area diffraction in transmission electron microscope...

article

Cell targeting by a generic receptor-targeted polymer nanocontainer platform

Pavel Brož, Samantha M. Benito, CheeLoong Saw, Peter Burger, more

Journal of Controlled Release > 2005 > 102 > 2 > 475-488

Nanotechnology promises new avenues to medical diagnosis and treatment. Of special interest are injectable nanovehicles that are programmable towards specific targets, are able to evade the immune defense, and are versatile enough to be suited as carriers of complex functionality. Biotin-functionalized (poly(2-methyloxazoline)–b-poly(dimethylsiloxane)–b-poly(2-methyloxazoline) triblock copolymers...

article

Phase Equilibria in the Ni–Al–W System at 900°C

Pavel Brož, Jirří Buršík, Zdeňka Stará

Monatshefte für Chemie - Chemical Monthly > 2005 > 136 > 11 > 1915-1920

Summary. Multicomponent Ni-base alloys exhibit good mechanical properties even at elevated temperatures and they are widely used for industrial production of exertion-resistive parts of engines. These properties are mainly determined by the coexistence of a disordered γ matrix with a face centred cubic lattice and cuboidal domains of its ordered γ′ structure. Therefore it is useful to study phase...

article

Synthesis, characterization and biological activity of two nickel(II) complexes with 6-(2-chlorobenzylamino)purine

Zdeněk Trávníček, Michal Maloň, Martin Biler, Marián Hajdúch, more

Transition Metal Chemistry > 2000 > 25 > 3 > 265-269

Compounds of composition [Ni(L)(H₂O)₂Cl] and [Ni(L)(H₂O)(NO₃)] · EtOH [HL = 6-(2-chlorobenzylamino)purine] have been synthesized and characterized by elemental analyses, i.r. and electronic spectra, magnetic measurements and mass spectroscopy as tetrahedral nickel(II) complexes. The geometry of both complexes has been optimized using molecular mechanics modelling. Although the monoanionic ligand L...

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