Abstract We report on the optical properties of He-related color centers created by He-ion implantation and subsequent thermal annealing in natural diamonds, including temperature (300–700 K) excitation power (1–1800 kW/cm 2 )-dependent photoluminescence (PL) measurements. The prospects for use He-implanted diamonds sensing are discussed. effect fast neutron irradiation Si-V CVD were also exami...

• Coated ZrN sphere-UO 2 as surrogates for UN-UO accident tolerant fuel composites. Spheres coated with Mo or W nanopowders by developed processes and CVD. Use of spark plasma sintering to fabricate the composites at 1773 K 80 MPa. Both coating methods provide dense layers W. can protect nitride against interactions UO . Uranium (UN) spheres embedded in uranium dioxide (UO ) matrix is considere...

Chemisorption and thermal decomposition of metallorganic chemical vapor deposition precursors, (t-BuN)2W(NHBu-t)2, bis(tertbutylimido)bis(tert-butylamido)tungsten (BTBTT) and (t-BuN)2W(NEt2)2, bis(tert-butylimido)bis(diethylamido)tungsten (BTBDT), on Cu(111) have been investigated bymeans of thermal desorption spectroscopy (TDS) and synchrotron-basedX-ray photoelectron spectroscopy (SR-XPS) und...

Vertically aligned single-walled carbon nanotubes (VASWNTs) is expected to be an extra-ordinal material for various optical, electrical, energy, and thermal devices. The recent progress in growth control and characterization techniques will be discussed. The CVD growth mechanism of VA-SWNTs is discussed based on the in-situ growth monitoring by laser absorption during CVD. The growth curves are...

Active thermal control of a reactor for YBa2Cu3O7-x chemical vapor deposition is studied using a nonlinear heat transfer model validated by preliminary component testing. LQR and LQE methods are applied to the linearized model for observer-based control. Convergence rates of the controller and observer are indicated by closed-loop eigenvalues and disturbance rejection is assessed with H2 and H∞...

Abstract Introduction: The use of medicinal plants (MP) is increasing among the general population and patients with cardiovascular diseases (CVD). Simultaneous use of MP and cardiac medications can cause drug interactions and serious complications. Objective: This study aimed to determine the frequency of MP use and its related factors among patients with CVD. Materials and Methods: This c...

Abstract High-throughput production is a major bottleneck for integration of graphene-based technologies in existing and future applications. Here, semi-empirical heat transfer model developed to optimize large-scale deposition graphene on Ni Cu foils roll-to-roll (R2R) plasma chemical vapor (CVD) system. Temperature distributions during are recorded with situ temperature measurements using nea...

The top surface of carbon nanotube (CNT) “forests” produced by thermal chemical vapor deposition (CVD) often has a tangled morphology, owing to the self-organization CNTs at initial stage CVD process. Removal this “crust” layer, without damaging intrinsic microstructure CNT forest is key step for further applications. This paper studies tailored use Ar/O2 plasma etching modify morphology multi-...

compelling evidence suggests that the oxidative stress plays a key role in the pathophysiology of cardiovascular disease (cvd). superoxide dismutase (sod) enzymes play a major role in detoxification of reactive oxygen species and protection against oxidative stress. we examined the possible association between a 50-bp insertion/deletion in the sod1 promoter 1684-bp upstream of the sod1 atg with...