The present work investigates the less explored thermoelectric properties of n-type GaN semiconductors by combined both experimental and computational tools. Seebeck coefficients epitaxial thin films were experimentally measured in wide temperature range from 77 K to 650 steps ~10 covering low high-temperature regimes as a function carrier concentration 2 x1016, x 1017, 4 1017 8 cm-3. coefficie...

Growth of Bordetella pertussis in a high concentration of nicotinic acid (NA) had a modulating effect on several properties and activities of the bacteria. Compared with normally grown cells, those grown in a high concentration of NA had reduced capacity for taking up both NA and nicotinamide (ND); they had reduced adenylate cyclase activity and showed loss of agglutinogen factors 2 and 3, but ...

Ion transport through nanopores is an important process in nature and has important engineering applications. To date, most studies of nanopore ion transport have been carried out with electrolytes of relatively low concentrations. In this paper, we report on ionic current modulation from the translocation of dsDNA through a nanopore under high ionic strength and with an electrolyte concentrati...

Accurate recovery of an absorption lineshape is important in many industrial applications for simultaneous measurement of gas concentration and pressure or temperature. Here we demonstrate a method, based on a modification to the Hobbs balanced receiver circuit, for background signal nulling when external amplitude modulation of the laser output is used. Compared with direct or non-nulled detec...

We propose a new method to detect ultrasmall nonreciprocal phase shifts in solids based on the Sagnac interferometer combined with internal optical modulation of the absorption. The Sagnac interferometer with heterodyne balanced detection is expected to enable shot-noise-limited detection of phase shift as a result of its insensitivity to frequency and amplitude fluctuations of the laser. The l...

Working memory (WM) capacity, the amount of information one can hold online in mind, has a central role cognition. Previous electrophysiological and imaging studies revealed pivotal persistent activity within parietal frontal regions as neural foundations underpinning WM capacity. The best candidate molecules determining are brain’s major excitatory inhibitory neurotransmitters, glutamate gamma...

the physiologic function of the immune system is defense against infectious microbes and internal tumour cells, therefore, need to have precise modulatory mechanisms to maintain the body homeostasis. the mammalian cellular cd200 (ox2)/cd200r interaction is one of such modulatory mechanisms in which myeloid and lymphoid cells are regulated. cd200 and cd200r molecules are membrane proteins that t...