Initial salinity tolerance and ion-osmotic parameters in juvenile Russian sturgeon, Acipenser gueldenstaedtii, Brandt, 1833

The salinity tolerance, hematological and hydromineral regulation capabilities of juvenile Russian sturgeon (Acipenser gueldenstaedtii) were investigated in different ages and sizes in freshwater (FW: 0.05) but differed in experimental media (p0.05). However, the results showed that the above parameters in fish fingerlings did not return to initial values in the new environment and then physiological changes happened

INVESTIGATION OF THE RELATIONSHIP BETWEEN PHASE ANGLE AND MICRO-ALBUMINURIA IN TYPE 2 DIABETIC PATIENTS WITH A HISTORY OF MORE THAN 5 YEARS OF THE DISEASE IN ILAM PROVINCE, IRAN

Introduction: Phase angle is the ratio between cell mass and fat-free tissue and a cell health indicator which is measurable through bio-impedance analysis with 50 KHZ alternating current and can be interpreted as a voltage and a wave-form current. Diabetes mellitus contains a group of metabolic disorders that are in common in terms of appearance characteristic of hyperglycemia. Micro-albuminuria of urine albumin amounts 30-300mg/24h and the higher values are for diagnostic diabetic nephropathy. The aim of this study was to determine the relationship between Phase angle and micro-albuminuria in type 2 diabetic patients with a history of more than 5 years of the disease in the city of Ilam. Materials and methods: This is an analytical-practical case-control study and statistical society includes two case and control groups with an average age 52.06 +/- 6.69 years in case group and 50.02 +/- 5.42 years in the control group. The sample size in each group has been designated equal to 50 and data analysis is performed using SPSS and parametric and Non-parametric statistical methods and the related tests. Conclusion: The average Ph. A was obtained equal to 5.87 +/- 1.42 in the case group and 7.29 +/- 0.355 in the control group which statistically significant relationship exists between the two groups in Ph. A value (P<0.000). Average micro-albuminuria was 67.32 +/- 75.92 in the case group and 0.276 +/- 0.147 in the control group which there was a significant relationship statistically between the amount of micro-albuminuria within the both groups (P< 0.000). Discussion: By investigation of the relationship between ph. Angle and micro-albuminuria in diabetic patients it can be concluded that the amount Ph. A reduces with the increase of micro-albuminuria and by increasing micro-albuminuria, the variables of overall body water volume, intracellular water and extracellular water relatively increase and fat mass relatively decreases

Semiconductor channel mediated photodoping in h-BN encapsulated monolayer MoSe2 phototransistors

In optically excited two-dimensional phototransistors, charge transport is often affected by photodoping effects. Recently, it was shown that such effects are especially strong and persistent for graphene/h-BN heterostructures, and that they can be used to controllably tune the charge neutrality point of graphene. In this work we investigate how this technique can be extended to h BN encapsulated monolayer MoSe_2 phototransistors at room temperature. By exposing the sample to 785 nm laser excitation we can controllably increase the charge carrier density of the MoSe_2 channel by {\Delta}n {\approx} 4.45 {\times} 10^{12} cm^{-2}, equivalent to applying a back gate voltage of 60 V. We also evaluate the efficiency of photodoping at different illumination wavelengths, finding that it is strongly correlated with the light absorption by the MoSe_2 layer, and maximizes for excitation on-resonance with the A exciton absorption. This indicates that the photodoping process involves optical absorption by the MoSe_2 channel, in contrast with the mechanism earlier described for graphene/h-BN heterostroctures

Evaluation of physiological aspects and molecular identification of Saprolegnia isolates from rainbow trout (Oncorhynchus mykiss) and Caspian trout (Salmo trutta caspius) eggs based on RAPD–PCR

The genus of saprolegnia is one of the most important pathogenic aquatic fungi in farmed and wild fish. In the present study, fungal infected egss were collected from rainbow trout (Oncorhyncus mykiss) and Caspian trout (Salmo trutta caspius). After purification, 16 isolates were obtained (8 isolates from rainbow trout and 8 isolates from Caspian salmon, respectively). The isolates were then coded as R2 – R9 (rainbow trout) and S2 – S9 (Caspian trout).The registered DNA for S. parasitica (ACTT # 200048) and S. diclina (ACTT # 4206) were used and coded as R1 and S1, respectively. Based on the RAPD profile obtained all samples were divided to 3 groups and members of each group had more than 90% similarity among themselves. According to matrix of similarity and reference strains, the isolates were classified as three groups. Therefore, all of isolates in group 1 and 3 were S. parasitica and S. diclina, respectively, and the members of group 2 were known as Saprolegnia sp. The results of thermal resistance assessment showed that the isolates of rainbow trout and Caspian salmon eggs had slow growth in the temperature between 18 – 20 °C. Thus, R2 and S8 isolates had the lowest radial growth compared to other isolates. The isolates categorized in S. parasitica (group 1) created secoundry zoospores but not observed in two other groups. Thus, catenulated gamme was found in 78% and 55.55% isolates of rainbow trout and Caspian trout eggs, respectively. This study indicated that molecular methods were the best methods for identification of Saprolegnia spp. and it could be applied as a supplementary confirming method

The role of device asymmetries and Schottky barriers on the helicity-dependent photoresponse of 2D phototransistors

Circular photocurrents (CPC), namely circular photogalvanic (CPGE) and photon drag effects, have recently been reported both in monolayer and multilayer transition metal dichalcogenide (TMD) phototransistors. However, the underlying physics for the emergence of these effects are not yet fully understood. In particular, the emergence of CPGE is not compatible with the D3h crystal symmetry of two-dimensional TMDs, and should only be possible if the symmetry of the electronic states is reduced by influences such as an external electric field or mechanical strain. Schottky contacts, nearly ubiquitous in TMD-based transistors, can provide the high electric fields causing a symmetry breaking in the devices. Here, we investigate the effect of these Schottky contacts on the CPC by characterizing the helicity-dependent photoresponse of monolayer MoSe2 devices both with direct metal-MoSe2 Schottky contacts and with h-BN tunnel barriers at the contacts. We find that, when Schottky barriers are present in the device, additional contributions to CPC become allowed, resulting in emergence of CPC for illumination at normal incidence

Electrical and thermal generation of spin currents by magnetic bilayer graphene

Ultracompact spintronic devices greatly benefit from the implementation of two-dimensional materials that provide large spin polarization of charge current together with long-distance transfer of spin information. Here spin-transport measurements in bilayer graphene evidence a strong spin–charge coupling due to a large induced exchange interaction by the proximity of an interlayer antiferromagnet (CrSBr). This results in the direct detection of the spin polarization of conductivity (up to 14%) and a spin-dependent Seebeck effect in the magnetic graphene. The efficient electrical and thermal spin–current generation is the most technologically relevant aspect of magnetism in graphene, controlled here by the antiferromagnetic dynamics of CrSBr. The high sensitivity of spin transport in graphene to the magnetization of the outermost layer of the adjacent antiferromagnet, furthermore, enables the read-out of a single magnetic sublattice. The combination of gate-tunable spin-dependent conductivity and Seebeck coefficient with long-distance spin transport in a single two-dimensional material promises ultrathin magnetic memory and sensory devices based on magnetic graphene

PENGONTROL TEMPERATUR RUANGAN BERBASIS MICROCONTROLLER AT89S51

Dalam ruangan yang tertutup (close-loop system), suhu adalah salah satu faktor yang berpengaruh terhadap lingkungannya