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PubMed Journals Articles About "Discussion Exchange Knowledge Argument Exchange Ignorance" RSS

15:25 EDT 18th March 2019 | BioPortfolio

Discussion Exchange Knowledge Argument Exchange Ignorance PubMed articles on BioPortfolio. Our PubMed references draw on over 21 million records from the medical literature. Here you can see the latest Discussion Exchange Knowledge Argument Exchange Ignorance articles that have been published worldwide.

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Showing "Discussion exchange knowledge argument exchange ignorance" PubMed Articles 1–25 of 8,700+

Selective Ion Exchange Induced by Supramolecular Channel in Crystalline State.

Artificial ion channels are of increasing interest because of potential applications in biomimetics, e.g., for realizing selective ion permeability via the transport and/or exchange of selective ions. However, the selective ion transport and/or exchange in the crystalline state is rare, and to our knowledge, this function with changes in the physical properties of a material has not been achieved. In this study, by soaking single crystals of Li₂([18]crown-6)₃[Ni(dmit)₂]₂(H₂O)₄ (1) in an aqueous ...


Comparison of consumers' perspectives on different health information exchange (HIE) mechanisms: an experimental study.

Consumers' willingness to allow the distribution of their health data is a prerequisite for the success of any health information exchange (HIE) initiative. Several mechanisms are being used by healthcare organizations to exchange health information electronically. Our goal is to investigate how patients' preferences regarding information exchange (i.e., privacy concern, opt-in intention, and perceived health information sensitivity) are affected by different HIE models and exchange architectures.

Characterization of the Ligand Exchange Reactions on CdSe/ZnS QDs by Capillary Electrophoresis.

The continuous development of semiconductor quantum dots (QDs) in biochemical research has attracted special attention and surface functionalizing becomes more important to optimize their performance. Ligand exchange reactions are commonly used to modify the surface of QDs for their biomedical applications. However, the kinetics of ligand exchange for semiconductor QDs remain fully unexplored. Here, we describe a simple and rapid method to characterize the ligand exchange reactions on CdSe/ZnS QDs by capill...


The IMF failure that wasn't: risk ignorance during the European debt crisis.

This article builds on ignorance studies to revisit how we understand the role of expertise in international policymaking. A fundamental component of ignorance is concealing what you know. For experts, risk ignorance is a strategic resource when the policymaking process becomes a contested exchange. This article covers IMF lending programmes in Europe in 2008-13 with a special focus on Greece. Empirical data is drawn from policy documents. I find that risk ignorance at the IMF resulted from a joint process ...

Measuring Solvent Hydrogen Exchange Rates by Multi-Frequency Excitation N CEST.

Solvent exchange rates provide important information about the structural and dynamical properties of biomolecules. A large number of NMR experiments have been developed to measure such rates in proteins, the great majority of which quantify the build-up of signals from backbone amides after initial perturbation of water magnetization. Here we present a different approach that circumvents the main limitations that result from these classical hydrogen exchange NMR experiments. Building on recent developments...

Exponential Scaling of Water Exchange Rates with Ion Interaction Strength from the Perspective of Dynamic Facilitation Theory.

Water exchange reactions around ionic solutes are ubiquitous in aqueous solution-phase chemistry. However, the extreme sensitivity of exchange rates to perturbations in the chemistry of an ionic solute is not well understood. We examine water exchange around model ions within the language of dynamic facilitation theory, typically used to describe glassy and other systems with collective, facilitated dynamics. Through the development of a coarse-grained, kinetically-constrained lattice model of water exchang...

Capturing exchange using periodic radiofrequency irradiation.

The dynamics of spin system coupled by chemical exchange between two sites with different chemical shifts during periodic radiofrequency (RF) irradiation was here investigated. When the instantaneous π-flip of effective frequency during the course of frequency sweep was applied, a significant increase of exchange-induced relaxation rate constants was observed for small tip angle of magnetization in the laboratory frame of reference. This increase of the rate constants corresponds to the side bands generate...

The Halogen-Samarium Exchange Reaction. Synthetic Applications and Kinetics.

Fast I/Sm- and Br/Sm-exchanges take place when treating various aromatic or heterocyclic iodides and bromides with nBu2SmCl·4LiCl or nBu3Sm·5LiCl respectively. The resulting organosamarium reagents were efficiently quenched with aldehydes, ketones, and imines. Also, they undergo acylations when treated with N,N-dimethylamides leading to ketones. The rate of the Br/Sm-exchange on a typical aryl bromide was determined and showed that it was 8.5·105 faster than the Br/Mg-exchange, supporting that the rate o...

The LNT risk model for ionizing radiation is not an argument from ignorance.

The reHISS Three-Range Exchange Functional with an Optimal Variation of Hartree-Fock and Its Use in the reHISSB-D Density Functional Theory Method.

In the present study, we have reparametrized the HISS exchange functional. The new "reHISS" exchange provides a balance between short- and mid-range Hartree-Fock exchange (HFX) and a large total HFX coverage, with a fast convergence to zero HFX in the long range. The five parameters in this functional (according to equations 3 and 4 in the main text) are c = 0.15, c = 2.5279, c = 0, ω = 0.27, and ω = 0.2192. The combination of reHISS exchange with a reparametrized B97c-type correlation functional (Chan et...

Rapid detection of the presence of diffusion exchange.

Diffusion exchange spectroscopy (DEXSY) provides a detailed picture of how fluids in different microenvironments communicate with one another but requires a large amount of data. For DEXSY MRI, a simple measure of apparent exchanging fractions may suffice to characterize and differentiate materials and tissues. Reparameterizing signal intensity from a PGSE-storage-PGSE experiment as a function of the sum, b=b+b, and difference b=b-b of the diffusion encodings separates diffusion weighting from exchange weig...

Complete Chain of the First Global Kidney Exchange Transplant and 3-yr Follow-up.

Global Kidney Exchange (GKE) offers an opportunity to expand living renal transplantation internationally to patients without financial means. These international pairs are entered into a US kidney exchange program that provides long-term financial support in an effort to identify opportunities for suitable exchanges for both these international pairs and US citizens.

Chemical Tuning of Magnetic Exchange Couplings Using Broken-Symmetry Density Functional Theory.

With broken-symmetry Kohn-Sham density functional theory calculations, it is demonstrated that the ferromagnetic or anti-ferromagnetic character of two prototypical binuclear copper complexes can be modified, both in the sign and in magnitude, by means of chemical substitutions operated on the bridges connecting the two magnetic centers. The level of detail provided by the magnetic exchange decomposition in terms of direct exchange, kinetic exchange, and core polarization puts forward the relative importanc...

Fate and removal of trace pollutants from an anion exchange spent brine during the recovery process of natural organic matter and salts.

The results of this sampling campaign on pilot scale processes aim to evaluate the occurrence and behavior of trace organic micro-pollutants and metal elements during anion exchange treatment of surface water and the subsequent treatment of generated spent brine with two types of electrodialysis membrane pairs. This knowledge is relevant to assess the quality and reusability of secondary products created during brine treatment; specifically the excess of sodium chloride to be recycled onsite and the natural...

Root-soil structure inspired hydrogel microspheres with high dimensional stability and anion-exchange capacity.

Ion exchange materials show great advantages in water purification, food industry, pharmaceutical industry, etc. However, the ion exchange capacities of ion exchange materials, especially for anion-exchange materials, at present are still relatively low. Hydrogels own abundant functional groups and show high hydrophilicity, and thus are recognized as high-potential ion exchange materials, but may deform and even crush in use due to their low mechanical strength and unavoidable swelling behavior. In this stu...

Enhancing the kinetics of hydrazone exchange processes: an experimental and computational study.

The capacity of hydrazone bonds to readily undergo component exchange processes sees their extensive utilization in dynamic combinatorial chemistry. The kinetics of hydrazone exchange are optimal at pH ∼4.5, which limits the use of hydrazone-based dynamic combinatorial libraries, particularly for biological targets which are only stable at near-neutral pH values. It would thus be advantageous if hydrazone exchange proceeded with faster rates at pH values closer to neutral. We experimentally and computatio...

Saturation-recovery as a T-filter for T-T exchange NMR.

The Inversion-Recovery (IR) technique has already been proposed to be used as a T-filter for T-T Exchange experiments. However, when the Exchange experiments are employed for studying samples that show T distributions, where the pools are defined by broad relaxation time distributions, e.g. porous media, IR might be difficult to be used as a filter. This paper presents the difficulties found when using IR and proposes the use of Saturation-Recovery (SR) technique as an alternative to T-filter.

Gas Phase Hydrolysis and Oxo-Exchange of Actinide Dioxide Cations: Elucidating Intrinsic Chemistry from Protactinium to Einsteinium.

Gas-phase bimolecular reactions of metal cations with water provide insights into intrinsic characteristics of hydrolysis. For the actinide dioxide cations, actinyl(V) AnO2+, melding of experiment and computation provides insights into trends for hydrolysis, as well as for oxo-exchange between actinyls and water that proceeds via a hydrolysis pathway. We here extend this line of inquiry farther into the actinide series with CCSD(T) computations of potential energy surfaces for the reaction pathway for oxo-e...

Precipitant-ligand exchange technique reveals the ADP binding mode in Mycobacterium tuberculosis dethiobiotin synthetase.

Dethiobiotin synthetase from Mycobacterium tuberculosis (MtDTBS) is a promising antituberculosis drug target. Small-molecule inhibitors that target MtDTBS provide a route towards new therapeutics for the treatment of antibiotic-resistant tuberculosis. Adenosine diphosphate (ADP) is an inhibitor of MtDTBS; however, structural studies into its mechanism of inhibition have been unsuccessful owing to competitive binding to the enzyme by crystallographic precipitants such as citrate and sulfate. Here, a crystall...

Utility and safety of plasma exchange in paediatric neuroimmune disorders.

Our aim was to ascertain the indications, side effects, and outcomes in children receiving therapeutic plasma exchange (TPE) for neurological disorders.

Systematic calorimetric studies of proton exchange associated with binding of beta-lactoglobulin with ligand.

In proteins, proton exchange is caused due to the changes in the proton affinity (pK) of ionizable groups that are engaged in conformational changes induced by the binding of a ligand. In addition, knowledge regarding the type and number of such ionizable groups is very important to understand the pH-dependent changes of the thermodynamic parameters. Therefore, in this study, we performed a comprehensive analysis of proton exchange by using beta lactoglobulin (Blg), a representative of the lipocalin family ...

Convergent parallel mixed-methods study to understand information exchange in paediatric critical care and inform the development of safety-enhancing interventions: a protocol study.

The effective exchange of clinical information is essential to high-quality patient care, especially in the critical care unit (CCU) where communication failures can have profoundly negative impacts on critically ill patients with limited physiological capacity to tolerate errors. A comprehensive systematic characterisation of information exchange within a CCU is needed to inform the development and implementation of effective, contextually appropriate interventions. The objective of this study is to charac...

A Novel Approach to In-Office Air-Fluid Exchange Utilizing a 27-Gauge Valved Trocar Cannula.

To describe a new approach for in-office air-fluid exchange.

Wavefunction Control of Charge-Separated Excited State Lifetimes.

Control of excited state processes is crucial to an increasing number of important device technologies that include displays, photocatalysts, solar energy conversion devices, photovoltaics, and photonics. However, the manipulation and control of electronic excited state lifetimes and properties continue to be a challenge for molecular scientists. Herein, we present the results of ground state and transient absorption spectroscopies as they relate to magnetic exchange control of excited state lifetimes. We d...

Molecular Tunability of Magnetic Exchange Bias and Asymmetrical Magnetotransport in Metalloporphyrin/Co Hybrid Bilayers.

Molecular spins as individual are promising quantum states for emerging computation technologies. The "on surface" configuration of molecules in proximity to a magnetic film allows control over the orientations of molecular spins and coupling between them. The stacking of planar molecular spins could favor antiferromagnetic interlayer couplings and lead to pinning of the magnetic underlayer via the exchange bias, which is extensively utilized in ultrafast and high-density spintronics. However, fundamental u...


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