The effect of heat shock (40oC, 3 h) on the photosynthetic activity of 4-, 7and 11-day-old barley seedlings was studied. The rate of CO2 gas exchange in young leaves was not changed under heat shock while in 11-dayold seedlings the high temperature affected both the average quantum yield and the shape of light response curves of photosynthesis. Nevertheless, in chloroplasts of young heated leav...

Fluid models of gas discharges require the input of transport coefficients and rate coefficients that depend on the electron energy distribution function. Such coefficients are usually calculated from collision cross-section data by solving the electron Boltzmann equation (BE). In this paper we present a new user-friendly BE solver developed especially for this purpose, freely available under t...

The effect of an external electric field, E, on the electron attachment rate constant, ke, of SFg was studied by a pulsed-conductivity technique in liquid ethane and propane at temperatures ranging from 133—176 K and 156—216 K, respectively. At constant temperature, ke was independent of E at fields less than Ec, the critical field above which the mobility becomes fielddependent, but at E> Ec, ...

We show that the rate at which electrons pass through the respiratory chain in mitochondria and respiring prokaryotic cells is described by the product of three terms, one describing electron donation, one acceptance, and a third, the thermodynamic drive. We apply the theory of nonequilibrium thermodynamics in the context of the chemiosmotic model of proton translocation and energy conservation...

A clear understanding of the relationship between two photosynthetic capacity parameters, maximum carboxylation rate (Vcmax) and electron transport (Jmax), is expected to reveal plant physiology strategies critical in determining carbon water cycle terrestrial biosphere. Increasing evidence recent suggests unstable spatiotemporal contexts, casting a doubt on deriving Jmax solely from single lin...

widely used for the initial characterization of electrochemically active systems. In addition to indicating the number of different oxidation states, and their relative energies, CV can also be used for mechanistic studies of systems in which the electron transfer reactions are coupled to chemical reactions, due to the characteristic appearance of cyclic voltammograms associated with different ...

Mitochondria isolated from pea leaves (Pisum sativum L.) readily oxidized malate and glycine as substrates. The addition of glycine to mitochondria oxidizing malate in state 3 diminished the rate of malate oxidation. When glycine was added to mitochondria oxidizing malate in state 4, however, the rate of malate oxidation was either unaffected or stimulated. The reason both glycine and malate ca...

In this study, we have theoretically investigated the effect of electron stopper layer on internal temperature distribution of high performance vertical cavity surface-emitting laser emitting at 1305 nm. Simulation software PICS3D, which self-consistently combines the 3D simulation of carrier transport, self-heating, gain computation and wave-guiding, was used. Simulation results show that chan...