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PubMed Journals Articles About "Advanced Chemical Transport" RSS

02:00 EDT 18th October 2017 | BioPortfolio

Advanced Chemical Transport PubMed articles on BioPortfolio. Our PubMed references draw on over 21 million records from the medical literature. Here you can see the latest Advanced Chemical Transport articles that have been published worldwide.

More Information about "Advanced Chemical Transport" on BioPortfolio

We have published hundreds of Advanced Chemical Transport news stories on BioPortfolio along with dozens of Advanced Chemical Transport Clinical Trials and PubMed Articles about Advanced Chemical Transport for you to read. In addition to the medical data, news and clinical trials, BioPortfolio also has a large collection of Advanced Chemical Transport Companies in our database. You can also find out about relevant Advanced Chemical Transport Drugs and Medications on this site too.

Showing "Advanced Chemical Transport" PubMed Articles 1–25 of 14,000+

Localized shear generates three-dimensional transport.

Understanding the mechanisms that control three-dimensional (3D) fluid transport is central to many processes, including mixing, chemical reaction, and biological activity. Here a novel mechanism for 3D transport is uncovered where fluid particles are kicked between streamlines near a localized shear, which occurs in many flows and materials. This results in 3D transport similar to Resonance Induced Dispersion (RID); however, this new mechanism is more rapid and mutually incompatible with RID. We explore it...


Hydrocarbon-Based Polymer Electrolyte Membranes: Importance of Morphology on Ion Transport and Membrane Stability.

A fundamental understanding of polymer microstructure is important in order to design novel polymer electrolyte membranes (PEMs) with excellent electrochemical performance and stabilities. Hydrocarbon-based polymers have distinct microstructure according to their chemical structure. The ionic clusters and/or channels play a critical role in PEMs, affecting ion conductivity and water transport, especially at medium temperature and low relative humidity (RH). In addition, physical properties such as water upt...

Exploring the Charge Transport in Conjugated Polymers.

Conjugated polymers came to an unprecedented epoch that the charge transport is limited only by small disorder within aggregated domains. Accurate evaluation of transport performance is thus vital to optimizing further molecule design. Yet, the routine method by means of the conventional field-effect transistors may not satisfy such a requirement. Here, it is shown that the extrinsic effects of Schottky barrier, access transport through semiconductor bulk, and concurrent ambipolar conduction seriously influ...


Predicting Transport of 3,5,6-Trichloro-2-pyridinol (TCPy) into Saliva Using a Combination Experimental and Computational Approach.

A combination experimental and computational approach was developed to predict chemical transport into saliva. A serous-acinar chemical transport assay was established to measure chemical transport with non-physiological (standard cell culture medium) and physiological (using surrogate plasma and saliva medium) conditions using 3,5,6-trichloro-2-pyridinol (TCPy) a metabolite of the pesticide chlorpyrifos. High levels of TCPy protein binding were observed in cell culture medium and rat plasma resulting in di...

Paracellular transport and energy utilization in the renal tubule.

Paracellular transport across the tight junction is a general mechanism for transepithelial transport of solutes in epithelia, including the renal tubule. However, why paracellular transport evolved, given the existence of a highly versatile system for transcellular transport, is unknown.

Membranes based on polymer miscibility for selective transport and separation of metallic ions.

Polymer inclusion membranes (PIM) used for selective transport and separation of metallic ions have emerged in recent times. Their expansion depends on the method of preparation and their suitable structure and physico-chemical characteristics. In this paper, a novel category of membranes for ions separation is reported. The membranes were synthesized by thermally induced phase separation using a mixture of polyvinylidene fluoride (PVDF) and cellulose triacetate (CTA) plasticized by tris(2-ethylhexyl) phosp...

Switching of Charge Transport Pathways via Delocalization Changes in Single-molecule Metallacycles Junctions.

To explore the charge transport through metalla-aromatics building blocks, three metallacycles complexes were synthesized, and their single-molecule conductances were characterized by using mechanically controllable break junction technique. It is found that the conductance of the metallacycles junction with phosphonium group is more than one order of magnitude higher than that having no phosphonium group. X-ray diffraction and UV-vis spectroscopy suggested that the attached phosphonium group makes metallac...

Drug discovery: Uncoupling coupled transport.

Gating Ciliary Transport.

Cilia lack the ability to synthesize proteins and thus require dynamic transport. Reporting in this issue of Developmental Cell, Kanie et al. (2017) shed light on the mechanism of transport by implicating CEP19, which is associated with an autosomal-recessive obesity syndrome when mutated, in the triggering of intraflagellar transport.

Tracking Hole Transport in DNA Hairpins Using a Phenylethynylguanine Nucleobase.

The hole transport dynamics of DNA hairpins possessing a stilbene electron acceptor and donor along with a modified guanine (G) nucleobase, specifically 8-(4'-phenylethynyl)deoxyguanosine, or EG, have been investigated. The nearly indistinguishable oxidation potentials of EG and G and unique spectroscopic characteristics of EG(+•) make it well-suited for directly observing transient hole occupation during charge transport between a stilbene electron donor and acceptor. In contrast to the cation radical G(...

Bulk-mediated surface transport in the presence of bias.

Surface transport, when the particle is allowed to leave the surface, travel in the bulk for some time, and then return to the surface, is referred to as bulk-mediated surface transport. Recently, we proposed a formalism that significantly simplifies analysis of bulk-mediated surface diffusion [A. M. Berezhkovskii, L. Dagdug, and S. M. Bezrukov, J. Chem. Phys. 143, 084103 (2015)]. Here this formalism is extended to bulk-mediated surface transport in the presence of bias, i.e., when the particle has arbitrar...

Chemical Genomics, Structure Elucidation, and In Vivo Studies of the Marine-derived Anticlostridial Ecteinamycin.

A polyether antibiotic, ecteinamycin (1) was isolated from a marine Actinomadura sp., cultivated from the ascidian Ectein-ascidia turbinata. 13C-enrichment, high resolution NMR spectroscopy and molecular modeling enabled elucidation of the structure of 1 which was validated on the basis of comparisons with its recently reported crystal structure. Importantly, ec-teinamycin demonstrated potent activity against the toxigenic strain of Clostridium difficile NAP1/B1/027 (MIC = 59 ng/μL), as well as other toxig...

Spin-polarized transport through a quantum ring with an embedded protein-like single-helical molecule.

We investigate the spin-polarized electron transport through a quantum ring whose arms are embedded by one protein-like single-helical molecule and one quantum dot, respectively. It is found that the inter-arm quantum interference leads to the enhancement of the spin polarization in this structure. Moreover, when local magnetic flux is applied through the ring, the spin polarization in the electron transport process, including the polarization strength and direction, can be further adjusted. Next in the fin...

Charge Transport in Nanostructured Materials: Implementation and Verification of Constrained Density Functional Theory.

The in silico design of novel complex materials for energy conversion requires accurate, ab initio simulation of charge transport. In this work, we present an implementation of constrained density functional theory (CDFT) for the calculation of parameters for charge transport in the hopping regime. We verify our implementation against literature results for molecular systems, and we discuss the dependence of results on numerical parameters and the choice of localization potentials. In addition, we compare C...

Large scale calculations of thermoelectric transport coefficients: a case study of γ-graphyne with point defects.

Defects such as vacancies and impurities could have profound effects on the transport properties of thermoelectric materials. However, it is usually quite difficult to directly calculate the thermoelectric properties of defect-containing systems via first-principles method since very large supercell is required. In this work, based on the linear response theory and the kernel polynomial method, we present an efficient approach that can help to calculate the thermoelectric transport coefficients of a large s...

Superwettability of Gas Bubbles and Its Application: From Bioinspiration to Advanced Materials.

Gas bubbles in aqueous media are common and inevitable in, for example, agriculture and industrial processes. The behaviors of gas bubbles on solid interfaces, including generation, growth, coalescence, release, transport, and collection, are crucial to gas-bubble-related applications, which are always determined by gas-bubble wettability on solid interfaces. Here, the recent progress regarding the study of interfaces with gas-bubble superwettability in aqueous media, i.e., superaerophilicity and superaerop...

Chevrel Phase Mo6 T8 (T = S, Se) as Electrodes for Advanced Energy Storage.

With the large-scale applications of electric vehicles in recent years, future batteries are required to be higher in power and possess higher energy densities, be more environmental friendly, and have longer cycling life, lower cost, and greater safety than current batteries. Therefore, to develop alternative electrode materials for advanced batteries is an important research direction. Recently, the Chevrel phase Mo6 T8 (T = S, Se) has attracted increasing attention as electrode candidate for advanced bat...

Exploring the development and identity of advanced practice nursing in the UK.

The development of advanced nurse practice in the UK has been slow compared to some parts of the world. This article explores the history of advanced level nursing, the drivers for advanced nurse practice in the context of contemporary nursing and clinical leadership, the identity of advanced practice nursing roles, and the importance of advanced nurse practice in the UK.

Topological delocalization and tuning of surface channel separation in Bi2Se2Te Topological Insulator Thin films.

The surface states of a 3D topological insulator (TI) exhibit topological protection against backscattering. However, the contribution of bulk electrons to the transport data is an impediment to the topological protection of surface states. We report the tuning of the chemical potential in the bulk in Bi2Se2Te TI thin films, pinning it near the center of the bulk band gap, thereby suppressing the bulk carriers. The temperature dependent resistance of these films show activated behavior down to 50 K, follo...

Tuning Up or Down the Critical Thickness in LaAlO3 /SrTiO3 through In Situ Deposition of Metal Overlayers.

The quasi 2D electron system (q2DES) that forms at the interface between LaAlO3 and SrTiO3 has attracted much attention from the oxide electronics community. One of its hallmark features is the existence of a critical LaAlO3 thickness of 4 unit-cells (uc) for interfacial conductivity to emerge. In this paper, the chemical, electronic, and transport properties of LaAlO3 /SrTiO3 samples capped with different metals grown in a system combining pulsed laser deposition, sputtering, and in situ X-ray photoemissio...

Bond Graph Modelling of Chemiosmotic Biomolecular Energy Transduction.

Engineering systems modelling and analysis based on the bond graph approach has been applied to biomolecular systems. In this context, the notion of a Faraday-equivalent chemical potential is introduced which allows chemical potential to be expressed in an analogous manner to electrical volts thus allowing engineering intuition to be applied to biomolecular systems. Redox reactions, and their representation by half-reactions, are key components of biological systems which involve both electrical and chemica...

Does public transport use prevent declines in walking speed among older adults living in England? A prospective cohort study.

Although there is some evidence that public transport use confers public health benefits, the evidence is limited by cross-sectional study designs and health-related confounding factors. This study examines the effect of public transport use on changes in walking speed among older adults living in England, comparing frequent users of public transport to their peers who did not use public transport because of structural barriers (poor public transport infrastructure) or through choice.

Identification of chemical fingerprints in long-range transport of burning induced upper tropospheric ozone from Colorado to the North Atlantic Ocean.

This study investigates a significant biomass burning (BB) event occurred in Colorado of the United States in 2012 using the Community Multi-scale Air Quality (CMAQ) model. The simulation reasonably reproduced the significantly high upper tropospheric O3 concentrations (up to 145ppb) caused by BB emissions. We find the BB-induced O3 was primarily affected by chemical reactions and dispersion during its transport. In the early period of transport, high NOx and VOCs emissions caused O3 production due to react...

Transport from the endoplasmic reticulum to the Golgi in plants: Where are we now?

The biogenesis of about one third of the cellular proteome is initiated in the endoplasmic reticulum (ER), which exports proteins to the Golgi apparatus for sorting to their final destination. Notwithstanding the close proximity of the ER with other secretory membranes (e.g., endosomes, plasma membrane), the ER is also important for the homeostasis of non-secretory organelles such as mitochondria, peroxisomes, and chloroplasts. While how the plant ER interacts with most of the non-secretory membranes is lar...

Source tagging modeling study of heavy haze episodes under complex regional transport processes over Wuhan megacity, Central China.

Wuhan as a megacity of Central China was suffering from severe particulate matter pollution according to previous observation studies, however, the mechanism behind the pollution formation especially the impact of regional chemical transport is still unclear. This study, carried out on the Nested Air Quality Prediction Modeling System (NAQPMS) coupled with an on-line source-tagging module, explores different roles regional transport had in two strong haze episodes over Wuhan in October 2014 and quantitative...


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