Physical activity plays a crucial role in bone mass acquisition during childhood and adolescence, with weightbearing and high-impact sport activities being more beneficial. This study sought to evaluate the impact of different sports activities on bone mineral density and content in male Portuguese athletes. Seventy adolescent boys (aged 12-15 years) including 28 futsal players (FG), 20 swimmer...

We report the theoretical results of improved solar cell efficiency form InAs quantum dots (QDs) embedded in intrinsic region n-i-p GaAs structure. The effect QD layers on parameters is explained detail. For 250, we obtained a maximum 27.4%. Increasing number beyond optimum value resulted decrease efficiency. presence structure significant rise short circuit current density from 33.4 mA/cm2 wit...

Using noiseless solid-state CR-39 plastic track and Al2O3:C thermo-luminescent detectors, the yields of 3.0 MeV protons from DD-reaction and soft x-ray photons emitted from the cathode were studied in the periodic pulsing deuterium glow discharge with titanium cathodes at low discharge voltages (in the range 0.8–2.5 kV) and high current density (300–600 mA/cm2). The analysis of DD-proton yield ...

BACKGROUND The age-associated decline in aerobic exercise capacity is partially reversible by endurance exercise training. Moderate-intensity endurance exercise training increases aerobic exercise capacity mediated, in part, by improvement of stroke volume and left ventricular performance in older men. The present study was designed to characterize the nature of cardiovascular adaptations to st...

The combination of the chemical coagulation-assisted electrocoagulation (CC-EC) process with a solar photovoltaic energy source has attracted increasing attention for efficient removal oxygen demand (COD) from pharmaceutical wastewater. In this paper, CC-EC been utilized as an alternative to conventional processes treatment effects various operating parameters, such coagulant dosage, type, numb...

Herein, we synthesized the cadmium sulfide nanoparticles (CdS-NPs) coated zinc oxide nanorods (ZnO-NRs) core-shell like CdS-NPs@ZnO-NRs heterojunction for photo(electro)chemical applications. The CdS-NPs and ZnO-NRs were through a simple hydrothermal path. physicochemical optoelectronic properties of as-prepared catalysts are characterized by various spectroscopy techniques, such as FTIR, XRD, ...

Current–voltage measurements of Au contacts deposited on ex situ cleaned, n-type ZnO!0001" #!0001̄"$ surfaces showed reverse bias leakage current densities of %0.01 !%0.1" A/cm2 at 4.6 !3.75" V reverse bias and ideality factors !2 !both surfaces" before sharp, permanent breakdown !soft breakdown". This behavior was due primarily to the presence of !1.6–2.0"±0.1 #!0.7–2.6"±0.1$ monolayers !ML" of...

To power large-scale energy storage systems, sodium-ion batteries (SIBs) must have not only high-energy density but also high performance under a low-temperature (LT) environment. P2-type manganese oxides with specific capacity are promising cathode candidates for SIBs, their LT applications limitedly explored. We proposed Na0.67Ni0.1Co0.1Mn0.8O2 material outstanding prepared through reasonable...

In this study, Au:TiO2 nanoparticles (NPs) are prepared by using the laser ablation method in liquid at different energies (600, 800, and1000 mJ). After that, Au: TiO2 NPs were deposited on porous-Si(PS). Porous silicon (PS) is synthesized photo-electrochemical etching (PECE) of n-type crystalline Si (c-Si) wafers (100) orientation. The intensity current density was (4, 12, and 20 mA/cm2), with...

Development of high performance electrocatalysts for oxygen evolution reaction (OER) in acidic media remains a challenge direct water splitting using an electrolyzer. Recently, Ruddlesden-Popper phase Sr2IrO4 was discovered to be efficient OER catalyst because its unique structure, which consists layers both rock salt and perovskite phases simultaneously. In this study, we prepared series B-sit...