Results characterizing GaAs pþ-i-nþ mesa photodiodes with a 10 mm i layer for their spectral response under illumination of X-rays and beta particles are presented. A total of 22 devices, having diameters of 200 mm and 400 mm, were electrically characterized at room temperature. All devices showed comparable characteristics with a measured leakage current ranging from 4 nA/cm to 67 nA/cm at an ...

The possible protective effects of NMDA receptor antagonists dizocilpine (MK-801) and D(-)-2-amino-5-phosphonopentanoic acid (AP5), and nitric oxide synthase (NOS) inhibitors L-nitro-arginine methyl ester (L-NAME) and 7-nitro-indazol (7-NI) on the methylmercury (MeHg)-induced dopamine (DA) release from rat striatum were investigated using in vivo microdialysis. Intrastriatal infusion of 400 mic...

Postoperative cognitive dysfunction (POCD) is a decline in cognitive performance after a surgery with anaesthesia. The exact reasons of surgery and/or anaesthesia resulting in POCD are unclear. The aim of this study is to investigate the effects of different concentration and duration time of isoflurane anaesthesia on cognitive performance and cellular mechanisms involved in learning and memory...

The paper presents results of exposure normal concrete to elevated temperatures (400 and 700) °C covered by layers (gypsum plaster) with different thicknesses (10 20) mm. casted specimens for each type test were divided into three groups. first was without covering the surface gypsum, while second third groups gypsum outer a thickness 10 20 mm, respectively. experimental found that ultimate loa...

We analyse the spectrum of non-BPS branes in the type I theory on the orbifold T /I4. We present a detailed analysis of the action of the worldsheet parity Ω on the different D-brane boundary state sectors of type IIB on T /I4, using the covariant formulation. Using these results we derive the spectrum of branes in the type I orbifold. We find ZZ2and ZZcharged non-BPS branes. A study of the sta...

The crystal structures and properties of hafnium hydride under pressure are explored using the first-principles calculations based on density function theory. The material undergoes pressure-induced structural phase transition I4/mmm → Cmma → P21/m at 180 and 250 GPa, respectively, and all of these structures are metallic. The superconducting critical temperature Tc values of I4/mmm, Cmma, and ...

DNA microarray analysis showed that yfiD, yggB, and yggE genes were up-regulated when superoxide dismutase (SOD)-deficient Escherichia coli IM303 (I4) was cultivated under the oxidative stress generated by photoexcited TiO(2), and pYFD, pYGB, and pYGE were constructed by inserting the respective genes into a pUC 19 vector. The content of reactive oxygen species (ROS) in IM303 (I4) cells carryin...

Understanding the properties of molecular solids at high pressure is a key element in development new solid-state theories. However, most commonly used generalized-gradient approximation (GGA) density functional theory (DFT) often fails to correctly describe behavior these systems pressure. Here we utilize hybrid DFT approach model elemental bromine The calculations reproduce very good agreemen...

In order to investigate the effect of deficit irrigation and chemical fertilizers on yield some physiological traits quinoa an experiment was conducted in 2019 as split plot based a randomized complete block design two locations (Mashhad Neishabour). Irrigation included, I0: full irrigation, I1: no at emergence stage, I2: stem elongation I3: flowering I4: seed setting stage. Fertilizer treatmen...