Dr. Rosso's current projects include the following: (1) characterizing the kinetics and mechanisms of elementary charge and ion transport processes in redox transformation of iron oxide minerals, (2) predicting molecular - scale electron transfer kinetics in microbially - mediated reduction of bioavailable iron in subsurface environments, (3) studying mechanisms of heterogeneous reduction of contaminant U (VI) and Tc (VII) by Fe (II)- bearing minerals, (4) simulation of coupled charge and
ion transport in transition metal oxide electrodes for advanced materials applications, (5) probing mechanisms and kinetics of mineral transformation to metal carbonates for geological carbon sequestration, and (6) studying mechanisms of uptake and retention of uranium in sediments.
The review details capture and transport of light in the semiconductor, electrocatalysis,
ion transport in the membrane and aqueous electrolytes, transport of product gas, and describesmulticomponent interactions between these physicochemical phenomena.
Not exact matches
«Our new finding is a direct link that
ions from Earth's atmosphere are
transported to the moon,» where they could remain
in the lunar soils for billions of years, Terada says.
A protein that
transports the simple chemical choline plays a major role
in vesicle trafficking,
ion homeostasis, and growth and development
in plants, according to two new studies publishing 28 December
in the open - access journal PLOS Biology, by Dai - Yin Chao of the Shanghai Institutes for Biological Sciences, China, and Sheng Luan of the University of California, Berkeley, USA, and co-workers.
University of Tokyo researchers have discovered the structure and
transport properties of the «intermediate state»
in lithium -
ion batteries — key to understanding the mechanisms of charge and discharge
in rechargeable batteries.
This small protein molecule contains a loop which fits, like a key
in a lock, into the
ion channel proteins found on nerve cell membranes, which are used to
transport sodium and potassium
ions in and out of the cell.
The study also shows that mutations
in the binding site weaken
ion binding and
transport in both the bacterial homologue and human DMT1.
Defective
ion channels are the underlying cause of many diseases, notably cystic fibrosis,
in which the
transport of chloride
ions is impaired.
The researchers studied calcium channels
in neurons, which allow for the
transport of calcium
ions from one nerve cell to another, helping the cells transmit itch signals from the skin to other cells
in the spinal cord.
«We discovered that it has characteristics similar to the properties previously identified for the pores responsible for sodium
ion transport,» says co-lead author Dr Caitlin Byrt, Postdoctoral Fellow
in the School of Agriculture, Food and Wine.
They control both the
transport of
ions inside the cell itself and to the outside, all
in complicated processes necessary to make the muscle able to contract,» explains Sørhus.
Ion Transport and Structural Evolution
in Solid State Ionics and Their Interfaces Charge Transfer Reactions at Heterogenous Catalyst Interfaces by In situ microsco
in Solid State Ionics and Their Interfaces Charge Transfer Reactions at Heterogenous Catalyst Interfaces by
In situ microsco
In situ microscopy
He studied physiology at the University of Guelph (BSc) and completed his MSc examining the role of membrane lipids
in regulating
ion transport ATPases.
(Invited) Multiscale Modeling of
Transport Phenomena
in Ion - Conducting Membranes and Aqueous CO2 Reduction Cells A. Z. Weber, A. R. Crothers, M. Singh, C. J. Radke, and A. T. Bell
In their paper, Schwenzer and her colleagues discuss the required features of an efficient membrane, including chemical stability, water
transport, and
ion diffusion.
Additionally, we recently have reported
ion - conducting copolymer systems
in which judicious choice of taper geometry led to reductions
in block glass transition temperatures, which ultimately reduced barriers to
ion -
transport and enhanced conductivity.
To determine the role of inflammatory response
in the pathophysiology of these diseases, glial cell morphology and essential functions, such as glutamate
transport,
ion recapture and modulation of neurotransmission will be evaluated following infusion of autoantibodies
in the hippocampus.
«It's a new class of material that can reconfigure itself, and it has the potential to be customized into liquid reaction vessels for many uses, from chemical synthesis to
ion transport to catalysis,» Tom Russell, a visiting faculty scientist
in Berkeley Lab's Materials Sciences Division, said
in a statement.
Objective: To develop artificial «ionic machines» for active manipulation and control of
ion and fluid
transport through nanometric channels, thereby imitating the functions of ionic machinery found
in nature.
The PPPL code, called XGC, simulates behavior of the
ions, electrons and neutral atoms
in the
transport barrier region — or «pedestal» — between the ultra-hot core of the plasma that fuels fusion reactions and the cooler and turbulent outer edge of the plasma.
Dr. Miller is interested
in the structure / property relationships that govern the
transport of small solutes — including gases,
ions, and small - molecule organics — through polymeric membranes.
For example,
ions take part
in acid - base reactions that determine the formation and
transport of environmental pollutants.
The new information may give scientists more confidence
in applying the «Born potential» to some of the complicated challenges
in predicting
ion transport near and through chemical and biological systems.
Most other nutrients, on the other hand, are more actively
transported - there are certain receptors lining those intestinal cells (cells called enterocytes, if anybody cares) that pull salts, sugars, amino acids, etc. through the intestinal lining into the cells
in exchange for other compounds (e.g. they'll pull
in a hydrogen
ion at the same time as an amino acid, then exchange the new hydrogen atom for a sodium molecule later.)
Furthermore, glutamine stimulates growth of the small intestinal mucosa
in young animals and also enhances
ion transport by the gut
in neonates and adults.
Ceruloplasmin binds free copper
ions and prevents free radical — induced oxidative damage.4
In a similar manner, ceruloplasmin facilitates iron loading onto its transport protein (i.e., transferrin) and prevents free ferrous (Fe +2) from participating in free radical — generating reactions
In a similar manner, ceruloplasmin facilitates iron loading onto its
transport protein (i.e., transferrin) and prevents free ferrous (Fe +2) from participating
in free radical — generating reactions
in free radical — generating reactions.4
Positive effects where ROS mediate functions of normal cell metabolism include the induction of host defence genes and mobilisation of
ion transport systems, and roles
in redox signaling.
All muscles contract using the same basic principles -
ion transport powers the attachment, configuration change, and detachment of protein cross bridges
in a given muscle fiber, which causes contractile proteins to slide across each other and, well, contract.
glutamine stimulates growth of the small intestinal mucosa
in young animals and also enhances
ion transport by the gut
in neonates and adults
Magnesium also plays a role
in the active
transport of calcium and potassium
ions across cell membranes, a process that is important to nerve impulse conduction, muscle contraction, and normal heart rhythm [3].
Genes putatively related to calcification (e.g. calcium and inorganic carbon
transport, H +
transport and carbonic anhydrases) have been identified via gene expression studies comparing calcifying and non-calcifying E. huxleyi cells [25 — 29], or
in short - term experiments where calcification was regulated by limitation of
ions needed for calcification (i.e. Ca2 +, HCO3 − / CO32 − [26,30,31]-RRB-.
The move to restrict luggage with built -
in batteries was spearheaded by American Airlines and the International Air
Transport Association
in order to decrease the risk of fires caused by lithium -
ion batteries.