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Journal articles on the topic 'Melting bound'

Author: Grafiati

Published: 4 June 2021

Last updated: 1 February 2022

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1

Yuan, Hao Ran, Xiao Bo Wang, Dan Dan Zhao, et al. "Experimental Study on Influence of Fly Ash in Melting Process on Heavy Metal Speciation." Advanced Materials Research 347-353 (October 2011): 142–46. http://dx.doi.org/10.4028/www.scientific.net/amr.347-353.142.

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The influence of melting process on heavy metal speciation was studied. The results show that although there are different changes of heavy metals Cd, Cu, Mn and Zn after melting process, percentage of residue is increasing and others are decreasing. Before melting process, Pb exists mainly in carbonate, Fe-Mn oxide and organic matter bound fractions and in Fe-Mn oxide bound fraction after the process. The percentage distribution of Cr, As, Ba and Ni are not changed obviously before and after melting. In general, the existence forms of all testing heavy metals trend to more stable speciation a

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2

Harańczyk, H., P. Nowak, M. Bacior, et al. "Bound water freezing in AntarcticUmbilicaria aprinafrom Schirmacher Oasis." Antarctic Science 24, no. 4 (2012): 342–52. http://dx.doi.org/10.1017/s0954102012000041.

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AbstractThe effect of low temperature onUmbilicaria aprinacollected from Schirmacher Oasis, East Antarctica, was determined over a wide range of hydration using proton free induction decays, proton nuclear magnetic resonance (NMR) spectra and differential scanning calorimetry methods. The proton NMR line is a superposition of the broad component from the solid matrix of the thallus and a narrower component from the averaged bound water pool. Proton free induction decays may be resolved into three components: a solid component well described by the Abragam function and two exponentially decayin

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3

REN, SHI-WEI. "INFLUENCE OF THE GUPTA POTENTIAL ON THE MELTING BEHAVIORS OF CLUSTERS." Modern Physics Letters B 20, no. 09 (2006): 485–94. http://dx.doi.org/10.1142/s0217984906010652.

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By using the standard microcanonical molecular-dynamics simulations, the melting behaviors of the clusters bound by Gupta potentials are investigated. The calculations indicate that these clusters can show different melting behaviors. The origins of these processes are studied. The effects of the attractive range and the repulsive part of the interatomic interaction on the melting behaviors of the clusters are compared and analyzed.

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4

REN, SHI-WEI. "THE EFFECT OF THE RANGE OF THE POTENTIAL ON THE MULTI-STEP CLUSTER MELTING PROCESS." International Journal of Modern Physics C 15, no. 05 (2004): 649–58. http://dx.doi.org/10.1142/s012918310400608x.

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By using the microcanonical molecular dynamics simulation, the melting processes of the clusters bound by Morse potential are investigated. It is found that these clusters show a multi-step melting process as long as the range of the Morse potential is a suitable value. The origins of this multi-step process are analyzed. I find that not only the repulsive core of the potential but also the attractive tail range of the potential influences the melting process. Moreover, the occurrence of the multi-step melting process is more sensitive to the tail region of the Morse potential.

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5

Chikhirzhina, Elena V., Starkova J. Tatiana, and Alexander M. Polyanichko. "Interaction between Chromosomal Protein HMGB1 and DNA Studied by DNA-Melting Analysis." Journal of Spectroscopy 2014 (2014): 1–5. http://dx.doi.org/10.1155/2014/387138.

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Interaction of HMGB1 nonhistone chromosomal protein with DNA was studied using circular dichroism spectroscopy and thermal denaturation of DNA. Melting DNA in the complex was shown to be a biphasic process. The characteristic melting temperatures of unbound DNA and the DNA bound to HMGB1 in 0.25 mM EDTA solutions were found to beTmI=44.0±0.5°C andTmII=62.0±1°C, respectively. It was shown that the binding of the HMGB1 molecule affects the melting of the DNA region approximately 30 b.p. long.

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6

Nakaoki, Takahiko, and Shingo Harada. "Melting Behavior of Bound Solvent in Isotactic Polypropylene/o-Dichlorobenzene Gel." Polymer Journal 37, no. 6 (2005): 429–33. http://dx.doi.org/10.1295/polymj.37.429.

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7

Telkki, Ville-Veikko, Miikka Yliniemi, and Jukka Jokisaari. "Moisture in softwoods: fiber saturation point, hydroxyl site content, and the amount of micropores as determined from NMR relaxation time distributions." Holzforschung 67, no. 3 (2013): 291–300. http://dx.doi.org/10.1515/hf-2012-0057.

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Abstract Distributions of nuclear magnetic resonance (NMR) relaxation times provide detailed information about the moisture absorbed in wood. In this work, T2*, T2, and T1 distributions were recorded from fresh sapwood and heartwood samples of pine (Pinus sylvestris) and spruce (Picea abies) at various temperatures. Below the melting point of bulk water, free water is frozen and its signal disappears from the distributions. Then, the low-temperature distributions of the unfrozen bound water contain more information about its components, because the large free water peaks hiding some smaller bo

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8

Cooke, Darren R., and Paul LH McSweeney. "The influence of alkaline earth metal equilibria on the rheological, melting and textural properties of Cheddar cheese." Journal of Dairy Research 80, no. 4 (2013): 418–28. http://dx.doi.org/10.1017/s0022029913000502.

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The total calcium content of cheese, along with changes in the equilibrium between soluble and casein (CN)-bound calcium during ripening can have a major impact on its rheological, functional and textural properties; however, little is known about the effect of other alkaline earth metals. NaCl was partially substituted with MgCl2 or SrCl2 (8·7 and 11·4 g/kg curd, respectively) at the salting stage of cheesemaking to study their effects on cheese. Three cheeses were produced: Mg supplemented (+Mg), Sr supplemented (+Sr) and a control Cheddar cheese. Ca, Mg and Sr contents of cheese and express

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9

Stefanovskiy, Vladimir M., Evgeny V. Morozov, and Vyacheslav M. Bоuznik. "STUDY OF GROUND PORK THAWING DYNAMICS USING MAGNETIC RESONANCE IMAGING." Theory and practice of meat processing 4, no. 1 (2019): 17–20. http://dx.doi.org/10.21323/2414-438x-2019-4-1-17-20.

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Visualization of changes in shape and size of the frozen residue during the thawing of ground pork is implemented using magnetic resonance imaging. A technique has been developed to study the displacement of thawing front line without damage to integrity of the object being thawed. It has been established that the melting of bound water crystals outran the melting of free water crystals in meat. A mathematical model that adequately describes the experimental data obtained in the analysis of tomograms is proposed. Tomograms are an important information source for studying the patterns of heat a

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10

Jonson, Bo, Björn Zethræus, Ruud Beerkens, and Adriaan Lankhorst. "CO₂ Neutral Glass Manufacturing? – A Study of the Possibilities." Advanced Materials Research 39-40 (April 2008): 425–30. http://dx.doi.org/10.4028/www.scientific.net/amr.39-40.425.

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The technological needs to achieve CO2 neutrality during glass manufacturing have been investigated by theoretical calculations on energy balances and experimental investigations on batch reactivity and fining efficiency. The concept is based on the assumption of utilization of woody bio fuel combustion directly over the batch blanket and glass melt bath for heating the glass furnace. Energy balance calculations were made for a “hot top”, 50 tonnes per day continuous furnace. Furthermore, elimination of the chemically bound CO2 in the glass batch has been considered by investigating the possib

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11

Talik, Przemysław, and Aleksander Mendyk. "Machine Learning for the Identification of Hydration Mechanisms of Pharmaceutical-Grade Cellulose Polymers and Their Mixtures with Model Drugs." Applied Sciences 11, no. 16 (2021): 7751. http://dx.doi.org/10.3390/app11167751.

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Differently bound water molecules confined in hydrated hydroxypropyl cellulose (HPC) type MF and their mixtures (1:1 w/w) with lowly soluble salicylic acid and highly soluble sodium salicylate were investigated by differential scanning calorimetry (DSC). The obtained ice-melting DSC curves of the HPC/H2O samples were deconvoluted into multiple components, using a specially developed curve decomposition tool. The ice-melting enthalpies of the individual deconvoluted components were used to estimate the amounts of water in three states in the HPC matrix: free water (FW), freezing bound water (FB

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12

West, Ryan M. "Review—Electrical Manipulation of DNA Self-Assembled Monolayers: Electrochemical Melting of Surface-Bound DNA." Journal of The Electrochemical Society 167, no. 3 (2020): 037544. http://dx.doi.org/10.1149/1945-7111/ab67ad.

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13

Ghan, Steven J., and Timothy Shippert. "Physically Based Global Downscaling: Climate Change Projections for a Full Century." Journal of Climate 19, no. 9 (2006): 1589–604. http://dx.doi.org/10.1175/jcli3701.1.

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Abstract A global atmosphere–land model with an embedded subgrid orography scheme is used to simulate the period 1977–2100 using ocean surface conditions and radiative constituent concentrations for a climate change scenario. Climate variables simulated for multiple elevation classes are mapped according to a high-resolution elevation dataset in 10 regions with complex terrain. Analysis of changes in the simulated climate leads to the following conclusions. Changes in surface air temperature and precipitation differ from region to region in a manner similar to simulations without the subgrid s

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14

Wen, Z., M. Zhao, Q. Jiang, Z. Wen, and M. Zhao. "The melting temperature of molecular nanocrystals at the lower bound of the mesoscopic size range." Journal of Physics: Condensed Matter 12, no. 41 (2000): 8819–24. http://dx.doi.org/10.1088/0953-8984/12/41/307.

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15

Zhang, Jianming, Hongxiang Teng, Xiaoshu Zhou, and Deyan Shen. "Frozen bound water melting induced cooperative hydration of poly(vinyl methyl ether) in aqueous solution." Polymer Bulletin 48, no. 3 (2002): 277–82. http://dx.doi.org/10.1007/s00289-002-0028-9.

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16

Nicoli, Gautier. "Water budget and partial melting in an Archean crustal column: example from the Dharwar Craton, India." Geological Society, London, Special Publications 489, no. 1 (2019): 115–33. http://dx.doi.org/10.1144/sp489-2018-88.

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AbstractThe fluid budget of a composite crustal column is a critical parameter that influences many lithospheric processes. The amount of water introduced into the middle and lower crust can be quantified using phase equilibrium modelling. The Dharwar Craton, India, displays a now-exposed continuous crustal section from near-surface conditions to c. 30 km depth. This section records the different steps of a c. 15 myr-long high-temperature metamorphic event (60°C kbar−1) responsible for the formation of syn- to post-tectonic anatectic intrusions. The global water budget is assessed using thermo

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17

Robinson, Sarah M., Zuliang Shen, Jon R. Askim, Christopher B. Montgomery, Herman O. Sintim, and Steve Semancik. "Ligand-Based Stability Changes in Duplex DNA Measured with a Microscale Electrochemical Platform." Biosensors 9, no. 2 (2019): 54. http://dx.doi.org/10.3390/bios9020054.

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Development of technologies for rapid screening of DNA secondary structure thermal stability and the effects on stability for binding of small molecule drugs is important to the drug discovery process. In this report, we describe the capabilities of an electrochemical, microdevice-based approach for determining the melting temperatures (Tm) of electrode-bound duplex DNA structures. We also highlight new features of the technology that are compatible with array development and adaptation for high-throughput screening. As a foundational study to exhibit device performance and capabilities, melti

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18

Raffo, Pablo A., Sebastián Suárez, Adolfo C. Fantoni, Ricardo Baggio, and Fabio D. Cukiernik. "Polymorphism of a widely used building block for halogen-bonded assemblies: 1,3,5-trifluoro-2,4,6-triiodobenzene." Acta Crystallographica Section C Structural Chemistry 73, no. 9 (2017): 667–73. http://dx.doi.org/10.1107/s2053229617011007.

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After reporting the structure of a new polymorph of 1,3,5-trifluoro-2,4,6-triiodobenzene (denoted BzF3I3), C6F3I3, (I), which crystallized in the space group P21/c, we perform a comparative analysis with the already reported P21/n polymorph, (II) [Reddy et al. (2006). Chem. Eur. J. 12, 2222–2234]. In polymorph (II), type-II I...I halogen bonds and I...π interactions connect molecules in such a way that a three-dimensional structure is formed; however, the way in which molecules are connected in polymorph (I), through type-II I...I halogen bonds and π–π interactions, gives rise to an exfoldable

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19

Tournier, Robert F., and Michael I. Ojovan. "Building and Breaking Bonds by Homogenous Nucleation in Glass-Forming Melts Leading to Transitions in Three Liquid States." Materials 14, no. 9 (2021): 2287. http://dx.doi.org/10.3390/ma14092287.

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The thermal history of melts leads to three liquid states above the melting temperatures Tm containing clusters—bound colloids with two opposite values of enthalpy +Δεlg × ΔHm and −Δεlg × ΔHm and zero. All colloid bonds disconnect at Tn+ > Tm and give rise in congruent materials, through a first-order transition at TLL = Tn+, forming a homogeneous liquid, containing tiny superatoms, built by short-range order. In non-congruent materials, (Tn+) and (TLL) are separated, Tn+ being the temperature of a second order and TLL the temperature of a first-order phase transition. (Tn+) and (TLL) are p

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20

Tompa, Kálmán, Mónika Bokor, and Péter Tompa. "The Melting Diagram of Protein Solutions and Its Thermodynamic Interpretation." International Journal of Molecular Sciences 19, no. 11 (2018): 3571. http://dx.doi.org/10.3390/ijms19113571.

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Here we present a novel method for the characterization of the hydration of protein solutions based on measuring and evaluating two-component wide-line 1H NMR signals. We also provide a description of key elements of the procedure conceived for the thermodynamic interpretation of such results. These interdependent experimental and theoretical treatments provide direct experimental insight into the potential energy surface of proteins. The utility of our approach is demonstrated through the examples of two proteins of distinct structural classes: the globular, structured ubiquitin; and the intr

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21

Nakaoki, Takahiko, and Hiroyuki Yamashita. "Bound states of water in poly(vinyl alcohol) hydrogel prepared by repeated freezing and melting method." Journal of Molecular Structure 875, no. 1-3 (2008): 282–87. http://dx.doi.org/10.1016/j.molstruc.2007.04.040.

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22

Wang, Zhe, Xi-Ming Wang, and Zhang-Jing Chen. "Water states and migration in Xinjiang poplar and Mongolian Scotch pine monitored by TD-NMR during drying." Holzforschung 72, no. 2 (2018): 113–23. http://dx.doi.org/10.1515/hf-2017-0033.

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AbstractThe time domain nuclear magnetic resonance (TD-NMR) technique was applied to observe the water states, water migration and theT2cutoffof sapwood (sW) and heartwood (hW) of Xinjiang poplar and Mongolian Scotch pine wood during drying. Three components in theT2spectrum could be observed for poplar and pine at room temperature, and a large, short time component and a small, long time component of free water was visible at the melting point of water. During drying, the long timeT2component diminished rapidly above the fiber saturation point (FSP), and almost disappeared close to or below t

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23

Sułkowski, Piotr. "BPS States, Crystals, and Matrices." Advances in High Energy Physics 2011 (2011): 1–52. http://dx.doi.org/10.1155/2011/357016.

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We review free fermion, melting crystal, and matrix model representations of wall-crossing phenomena on local, toric Calabi-Yau manifolds. We consider both unrefined and refined BPS counting of closed BPS states involving D2- and D0-branes bound to a D6-brane, as well as open BPS states involving open D2-branes ending on an additional D4-brane. Appropriate limit of these constructions provides, among the others, matrix model representation of refined and unrefined topological string amplitudes.

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24

Szustakiewicz, Piotr, Natalia Kowalska, Maciej Bagiński, and Wiktor Lewandowski. "Active Plasmonics with Responsive, Binary Assemblies of Gold Nanorods and Nanospheres." Nanomaterials 11, no. 9 (2021): 2296. http://dx.doi.org/10.3390/nano11092296.

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Self-assembly of metal nanoparticles has applications in the fabrication of optically active materials. Here, we introduce a facile strategy for the fabrication of films of binary nanoparticle assemblies. Dynamic control over the configuration of gold nanorods and nanospheres is achieved via the melting of bound and unbound fractions of liquid-crystal-like nanoparticle ligands. This approach provides a route for the preparation of hierarchical nanoparticle superstructures with applications in reversibly switchable, visible-range plasmonic technologies.

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25

Reinosdotter, Karin, and Maria Viklander. "Road Salt Influence on Pollutant Releases from Melting Urban Snow." Water Quality Research Journal 42, no. 3 (2007): 153–61. http://dx.doi.org/10.2166/wqrj.2007.019.

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Abstract A snow-melting experiment was performed to study the effects of road salt on the melting of urban snow from a snow windrow (pile) along a road in central Luleå, Sweden. Two snow piles were formed in the laboratory, with and without road salt added, and melted under similar conditions. All meltwater was collected and analyzed. The purpose of the experiment was to study the influence of the use of de-icing salt on meltwater quality and the release of pollutants from urban snow. The study indicated that the use of road salt may increase the dissolved metal phase in the urban snow meltwat

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26

Luckhaus, Stephan. "Solutions for the two-phase Stefan problem with the Gibbs–Thomson Law for the melting temperature." European Journal of Applied Mathematics 1, no. 2 (1990): 101–11. http://dx.doi.org/10.1017/s0956792500000103.

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The coupling of the Stefan equation for the heat flow with the Gibbs–Thomson law relating the melting temperature to the mean curvature of the phase interface is considered. Solutions, global in time, are constructed which satisfy the natural a priori estimates. Mathematically the main difficulty is to prove a certain regularity in time for the temperature and the indicator function of the phase separately. A capacity type estimate is used to give an L1 bound for fractional time derivatives.

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27

Farahani, Hamed Farmahini, Grunde Jomaas, and Ali S. Rangwala. "A study on burning behavior and convective flows in Methanol pool fires bound by ice." International Oil Spill Conference Proceedings 2017, no. 1 (2017): 1983–98. http://dx.doi.org/10.7901/2169-3358-2017.1.1983.

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Abstract (ID: 2017-170) An experimental study on methanol pool fires bound by ice was carried to research the burning behavior and flow field (within the liquid-phase) of methanol. The experiments were conducted in two parts: 1- in a cylindrical ice cavity/pan (10.2 cm diameter and 6 cm depth) at three different conditions to analyze burning parameters of methanol, 2- in a square glass tray with outside dimensions of 10 × 10 cm and a depth of 5 cm to obtain flow field of methanol pool with a two-dimensional PIV (Particle Image Velocimetry) system. The results of the experiments of the first pa

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28

Kim, Tae Won, Jung Teag Kim, Chan Young Park, Chang Hun Kim, and Chang Sik Ju. "Impregnation of Eicosane into Polyester Fiber Using Supercritical Carbon Dioxide." Solid State Phenomena 124-126 (June 2007): 1095–98. http://dx.doi.org/10.4028/www.scientific.net/ssp.124-126.1095.

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Supercritical impregnation of eicosane into polyester fiber was experimentally examined. Polyester fiber was bound on the cylindrical stainless steel net inside high pressure cylinder and was impregnated with supercritical eicosane solution. After an hour under supercritical condition, the system was expanded to atmospheric pressure and impregnated polyester fiber was obtained. Eicosane was successfully impregnated into the polyester fiber even at temperature below it’s glass transition(Tg), and the impregnated fiber showed high energy storage and release capacity around the melting point of e

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29

MÓCSY, ÁGNES, PÉTER PETRECZKY, and MICHAEL STRICKLAND. "QUARKONIA IN THE QUARK GLUON PLASMA." International Journal of Modern Physics A 28, no. 11 (2013): 1340012. http://dx.doi.org/10.1142/s0217751x13400125.

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In this paper, we review recent progress toward understanding the nature of quarkonia in the quark gluon plasma. We review the theory necessary to understand the melting of bound states due to color-screening, including lattice results for the heavy quark potential, lattice results on the correlation functions related to the relevant spectral functions, and the emergence of a complex-valued potential in high-temperature quantum chromodynamics. We close with a brief survey of phenomenological models of quarkonium suppression in relativistic heavy ion collisions.

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30

Schreiber, F., M. C. Gerstenberg, H. Dosch, and G. Scoles. "Melting Point Enhancement of a Self-Assembled Monolayer Induced by a van der Waals Bound Capping Layer." Langmuir 19, no. 24 (2003): 10004–6. http://dx.doi.org/10.1021/la030337p.

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31

Naif, Samer. "An upper bound on the electrical conductivity of hydrated oceanic mantle at the onset of dehydration melting." Earth and Planetary Science Letters 482 (January 2018): 357–66. http://dx.doi.org/10.1016/j.epsl.2017.11.024.

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32

Apkarian, Robert P., Stephen Lee, and Jason Keiper. "Refining Equipment for High Resolution in-Lens Cryo-Sem." Microscopy and Microanalysis 4, S2 (1998): 258–59. http://dx.doi.org/10.1017/s1431927600021413.

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Advanced metal coating methods have greatly improved the localization of secondary electrons (SEI) from biological specimens staged in an in-lens field emission SEM. Using these metal coatings, molecular level structural information from cell membranes and isolated bio-molecules have been more accurately recorded from frozen-hydrated samples due to the presence of bound water rather than from chemically fixed and dried samples. Although in-lens cryo-SEM systems have provided images with equivalent resolution to TEM-replicas, several conditions are encountered which require optimizing technique

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33

Shahabadi, Nahid, Soheila Kashanian, and Azadeh Fatahi. "Identification of Binding Mode of a Platinum (II) Complex, (DIP), and Calf Thymus DNA." Bioinorganic Chemistry and Applications 2011 (2011): 1–7. http://dx.doi.org/10.1155/2011/687571.

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The Pt(II) complex, PtCl2(DIP) (DIP = chelating dinitrogen ligand: 4,7-diphenyl-1,10-phenanthroline), was synthesized and characterized by elemental analysis (CHN) and NMR and UV-vis techniques. The binding of this complex to calf thymus DNA was investigated using various physicochemical methods such as spectrophotometric, circular dichroism, spectrofluorometric, melting temperature, and viscosimetric techniques. Upon addition of the complex, important changes were observed in the characteristic UV-Vis bands (hyperchromism) of calf thymus DNA (CT-DNA): increase in melting temperature, sharp in

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34

Kawasuso, Atsuo, Hironobu Arashima, Masaki Maekawa, Hideaki Itoh, and Toshiki Kabutomori. "Positron Lifetime Study on Degradation of TiCrV Hydrogen Storage Alloy." Materials Science Forum 607 (November 2008): 122–24. http://dx.doi.org/10.4028/www.scientific.net/msf.607.122.

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Using positron lifetime spectroscopy, we examined the evolution of defects in the Ti24Cr36V40 alloy prepared by arc-melting method during hydriding cycles. We found that the positron lifetime increases with increasing the pressure swing cycles. This behavior is well correlated with the degradation of hydrogen transfer change with the pressure swing cycles. The prolonged positron lifetime is attributed to dislocation-related defects. Both dislocations and vacancies bound at dislocations may act as positron trapping centers. After the heat treatment at 400oC, a partial recovery of positron lifet

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35

Ju, Chang Sik, Tae Won Kim, and Si Young Kim. "Supercritical Impregnation of Organic Phase Change Materials into Polyester Fiber." Materials Science Forum 544-545 (May 2007): 853–56. http://dx.doi.org/10.4028/www.scientific.net/msf.544-545.853.

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A new technique preparing polyester fiber impregnated with organic phase change material(PCM) was proposed and experimentally examined. The impregnation apparatus consisted of a high pressure pump, two consecutive high pressure cylinders and auxiliary facilities. Polyester fiber was bound on cylindrical stainless steel net inside equilibrium cylinder and was impregnated with supercritical solution of PCM. PCMs, paraffin waxes and organic acids, were successfully impregnated into the polyester fiber even at temperature below it’s glass transition temperature(Tg), and the impregnated fibers show

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36

Basu, H. S., H. C. A. Schwietert, B. G. Feuerstein, and L. J. Marton. "Effects of variation in the structure of spermine on the association with DNA and the induction of DNA conformational changes." Biochemical Journal 269, no. 2 (1990): 329–34. http://dx.doi.org/10.1042/bj2690329.

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The effects of spermine and spermine analogues on the B-Z transition of poly(dG-me5dC) and on the aggregation and ‘melting’ temperature of calf thymus DNA were studied by spectroscopic methods. The association constants of these polyamines with double- and single-stranded calf thymus DNA were calculated from their effects on the melting temperature. The effect of these compounds on the release of ethidium bromide (EB) from an EB-DNA complex were measured by a spectrofluorimetric method. This efficiency of the polyamine-induced B-Z transition strongly depended on the length of the central carbo

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37

Takezawa, Akihiro, Makoto Kobashi, Yuichiro Koizumi, and Mitsuru Kitamura. "Porous metal produced by selective laser melting with effective isotropic thermal conductivity close to the Hashin–Shtrikman bound." International Journal of Heat and Mass Transfer 105 (February 2017): 564–72. http://dx.doi.org/10.1016/j.ijheatmasstransfer.2016.10.006.

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38

Bokor, Mónika, Ágnes Tantos, Péter Tompa, Kyou-Hoon Han та Kálmán Tompa. "WT and A53T α-Synuclein Systems: Melting Diagram and Its New Interpretation". International Journal of Molecular Sciences 21, № 11 (2020): 3997. http://dx.doi.org/10.3390/ijms21113997.

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The potential barriers governing the motions of α-synuclein (αS) variants’ hydration water, especially energetics of them, is in the focus of the work. The thermodynamical approach yielded essential information about distributions and heights of the potential barriers. The proteins’ structural disorder was measured by ratios of heterogeneous water-binding interfaces. They showed the αS monomers, oligomers and amyloids to possess secondary structural elements, although monomers are intrinsically disordered. Despite their disordered nature, monomers have 33% secondary structure, and therefore th

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Loziiński, T., and K. L. Wierzchowski. "Mg2+ ions do not induce expansion of the melted DNA region in the open complex formed by Escherichia coli RNA polymerase at a cognate synthetic Pa promoter. A quantitative KMnO4 footprinting study." Acta Biochimica Polonica 48, no. 2 (2001): 495–510. http://dx.doi.org/10.18388/abp.2001_3933.

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Footprinting studies of prokaryotic open transcription complexes (RPO), based on oxidation of pyrimidine residues by KMnO4 and/or OsO4 at a single oxidant dose, have suggested that the extent of DNA melting in the transcription bubble region increases in the presence of Mg . In this work, quantitative KMnO4 footprinting in function of the oxidant dose of RPO, using Escherichia coli RNA polymerase (E(sigma)70) at a fully functional synthetic promoter Pa having -35 and -10 consensus hexamers, has been used to determine individual rate constants of oxidation of T residues in this region at 37degr

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40

Kim, Sung-Cheol, Lichao Yu, Alexandros Pertsinidis, and Xinsheng Sean Ling. "Dynamical processes of interstitial diffusion in a two-dimensional colloidal crystal." Proceedings of the National Academy of Sciences 117, no. 24 (2020): 13220–26. http://dx.doi.org/10.1073/pnas.1918097117.

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In two-dimensional (2D) solids, point defects, i.e., vacancies and interstitials, are bound states of topological defects of edge dislocations and disclinations. They are expected to play an important role in the thermodynamics of the system. Yet very little is known about the detailed dynamical processes of these defects. Two-dimensional colloidal crystals of submicrometer microspheres provide a convenient model solid system in which the microscopic dynamics of these defects can be studied in real time using video microscopy. Here we report a study of the dynamical processes of interstitials

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Perez, Adiel F., Kyle R. Taing, Justin C. Quon, Antonia Flores, and Yong Ba. "Effect of Type I Antifreeze Proteins on the Freezing and Melting Processes of Cryoprotective Solutions Studied by Site-Directed Spin Labeling Technique." Crystals 9, no. 7 (2019): 352. http://dx.doi.org/10.3390/cryst9070352.

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Antifreeze proteins (AFPs) protect organisms living in subzero environments from freezing injury, which render them potential applications for cryopreservation of living cells, organs, and tissues. Cryoprotective agents (CPAs), such as glycerol and propylene glycol, have been used as ingredients to treat cellular tissues and organs to prevent ice crystal’s formation at low temperatures. To assess AFP’s function in CPA solutions, we have the applied site-directed spin labeling technique to a Type I AFP. A two-step process to prevent bulk freezing of the CPA solutions was observed by the cryo-ph

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Kovář, Michal, and Zdeněk Dolníček. "Barytová mineralizace v granodioritovém porfyritu z Bělovsi u Náchoda (orlicko-sněžnické krystalinikum, Česká republika)." Bulletin Mineralogie Petrologie 28, no. 1 (2020): 86–93. http://dx.doi.org/10.46861/bmp.28.086.

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A new occurrence of baryte mineralization at Běloves near Náchod is bound to a steep NNE-SSW trending fissure in a dyke of granodiorite porphyrite, which cut phyllites of the Nové Město Group (Orlica-Sněžník Crystalline Complex). The mineralization is composed of three generations of baryte differing in Sr contents (~0.10 apfu in the oldest generation, ~0.003 apfu in the youngest generation) and small amount of hematite. The primary fluid inclusions in baryte belong to type L and L+V; the variable phase proportions are probably caused by postdepositional damage of part of the present fluid inc

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Lupiano, Valeria, Paolo Catelan, Claudia R. Calidonna, et al. "LLUNPIY Simulations of the 1877 Northward Catastrophic Lahars of Cotopaxi Volcano (Ecuador) for a Contribution to Forecasting the Hazards." Geosciences 11, no. 2 (2021): 81. http://dx.doi.org/10.3390/geosciences11020081.

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LLUNPIY (lahar modeling by local rules based on an underlying pick of yoked processes, from the Quechua word “llunp’iy“, meaning flood) is a cellular automata (CA) model that simulates primary and secondary lahars, here applied to replicate those that occurred during the huge 1877 Cotopaxi Volcano eruption. The lahars flowing down the southwestern flanks of the volcano were already satisfactorily simulated in previous investigations of ours, assuming two possible different triggering mechanisms, i.e., the sudden and homogeneous melting of the summit ice and snow cap due to pyroclastic flows an

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Mueller, B. A., R. J. Schaefer, and J. H. Perepezko. "The solidification of aluminum-manganese powders." Journal of Materials Research 2, no. 6 (1987): 809–17. http://dx.doi.org/10.1557/jmr.1987.0809.

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The solidification behavior of Al–Mn alloy powders was studied as a function of cooling rate and manganese content. The phases present in the powders differed from those expecied at equilibrium due to competetive nucleation and growth kinetics. The equilibrium Al6Mn phase was absent due to its relatively sluggish nucleation kinetics, and in the more concentrated and rapidly cooled alloy powders, the metastable quasicrystalline phases were present. Nucleation temperatures measured in alloys cooled at 25°C/s are interpreted to represent formation of the icosahedral phase, which subsequently tran

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Seniorita, Latifa, Eiji Minami, and Haruo Kawamoto. "Development and Evaluation of Thermodynamic Models for Predicting Cold Flow Properties of Biodiesel." Journal of Advanced Research in Fluid Mechanics and Thermal Sciences 76, no. 3 (2020): 117–25. http://dx.doi.org/10.37934/arfmts.76.3.117125.

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Biodiesel, especially palm oil-based methyl esters (PME), is steadily increasing in consumption in Indonesia and Malaysia as a petroleum diesel substitute. PME has poor cold flow properties due to the presence of saturated bound glycerols. Bound glycerols, such as monoglycerides (MAGs), diglycerides (DAGs), and triglycerides (TAGs), are impurities in biodiesel as a result of incomplete transesterification, and have high melting points. These minor components often solidify even at temperatures higher than the cloud point and thus cause clogging in fuel filters. It is, therefore, essential to p

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Tjahjono, Daryono H., Suhendar, Benny Permana, Naoki Yoshioka, and Hidenari Inoue. "Binding of nickel(II) tetrakis(dimethylpyrazolium-4-yl)porphyrin to poly(dG-dC)2 and poly(dA-dT)2." Journal of Porphyrins and Phthalocyanines 14, no. 04 (2010): 305–13. http://dx.doi.org/10.1142/s1088424610002148.

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The interaction of nickel(II) complex of cationic porphyrins bearing five-membered rings, meso-tetrakis(1,2-dimethylpyrazolium-4-yl)porphyrinatonickel(II) (NiPzP) , with synthetic polynucleotides poly(dG-dC)2 and poly(dA-dT)2 has been characterized by viscometric, visible absorption, CD and MCD spectroscopic, and melting temperature measurements. The nickel(II) complex NiPzP is intercalated into poly(dG-dC)2 but outside bound to the major groove of poly(dA-dT)2. The binding constants of NiPzP to poly(dG-dC)2 and poly(dA-dT)2 are in the order of 106 M-1 and comparable to those of other reported

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Widziewicz-Rzońca, Kamila, Malwina Tytła, Grzegorz Majewski, Patrycja Rogula-Kopiec, Krzysztof Loska, and Wioletta Rogula-Kozłowska. "Strongly and Loosely Bound Water in Ambient Particulate Matter—Qualitative and Quantitative Determination by Karl Fischer Coulometric Method." Sustainability 12, no. 15 (2020): 6196. http://dx.doi.org/10.3390/su12156196.

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Simple physical characterization of water evaporation can provide detailed information regarding its component distribution in particulate matter (PM) samples. The water presence in PM can greatly influence its polarity and subsequent reaction activity, for example, in secondary inorganic and organic matter formation. In this study, the presence of PM-bound water is detected using the Karl Fischer titration method in a temperature gradient with an aim to quantitatively assess different types of water occurrence. The analyses were initiated by testing two reference materials, namely urban parti

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Wang, J. J., A. B. Limanov, Ying Wang, and James S. Im. "Observation of Superheating of Si at the Si/SiO2 Interface in Pulsed-laser irradiated Si Thin Films." MRS Proceedings 1770 (2015): 43–48. http://dx.doi.org/10.1557/opl.2015.727.

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ABSTRACTSubstantial superheating of single-crystal Si films at and near the bottom Si/SiO2 interface was observed. This was accomplished via back-side irradiation of a (100) single-crystal Si film on a quartz substrate using an excimer-laser pulse. The spatiotemporal details of the melting transition were tracked in situ using surface-side and substrate-side transient reflectance measurements, and the one-dimensional thermal profile evolution within the solid film during the heating period was numerically computed using the experimentally extracted temporal profile of the incident beam and tem

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Vopel, Sven, Hermine Mühlbach, and Arne Skerra. "Rational engineering of a fluorescein-binding anticalin for improved ligand affinity." Biological Chemistry 386, no. 11 (2005): 1097–104. http://dx.doi.org/10.1515/bc.2005.126.

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Abstract The anticalin FluA is an artificial lipocalin with novelspecificity for the fluorescein group, which was engineered from an insect bilin-binding protein by targeted random mutagenesis and selection. Based on the crystal structure of FluA, an attempt was made to improve the complementarity of its ligand pocket to fluorescein by rational protein design. Several side chains participating in sub-optimal interactions with the ligand were identified and replaced by residues that promised a better steric fit. As a result, the substitution of Ala45 by Ile and of Ser114 by Thr or Arg led to a

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Hongbo, Tang, Li Yanping, Zhang Wen, and Dong Siqing. "Synthesis, Optimization, Property, Characterization, and Application of Dialdehyde Cross-Linking Guar Gum." International Journal of Polymer Science 2016 (2016): 1–14. http://dx.doi.org/10.1155/2016/6482461.

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Dialdehyde cross-linking guar gum (DCLGG), as a novel material, was synthesized using phosphorus oxychloride as a cross-linking reagent, sodium periodate as an oxidant, and ethanol as a solvent through keeping the original particle form of guar gum. The process parameters such as the reaction temperature, reaction time, pH, amount of sodium periodate, and amount of ethanol were optimized by the response surface methodology in order to obtain the regression model of the oxidization. The covalent binding of L-asparagine onto the surfaces of DCLGG was further investigated. The results showed that

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