Browsing by Title
Now showing items 12500-12519 of 50342
-
Higher order self-adjoint operators with polynomial coefficients
( Texas State University - San Marcos , 2017 , Article)We study algebraic and analytic aspects of self-adjoint operators of order four or higher with polynomial coefficients. As a consequence, a systematic way of constructing such operators is given. The procedure is applied ... -
Higher order statistical frequency domain decomposition for operational modal analysis
( Academic Press , 2017 , Article)Experimental methods based on modal analysis under ambient vibrational excitation are often employed to detect structural damages of mechanical systems. Many of such frequency domain methods, such as Basic Frequency Domain ... -
Higher Serum Testosterone Level Was Associated with a Lower Risk of Prediabetes in US Adults: Findings from Nationally Representative Data
( MDPI , 2022 , Article)Low testosterone may be a novel risk factor for prediabetes. We assessed the associations between prediabetes and total serum testosterone (TT), and whether the associations were modified by population characteristics. The ... -
Higher serum uric acid is associated with poorer cognitive performance in healthy middle-aged people: a cross-sectional study
( Springer Science and Business Media Deutschland GmbH , 2023 , Article)Age-related cognitive impairment can occur many years before the onset of the clinical symptoms of dementia. Uric acid (UA), a metabolite of purine-rich foods, has been shown to be positively associated with improved ... -
Highlight on cryptocurrencies mining with CPUs and GPUs and their benefits based on their characteristics
( Institute of Electrical and Electronics Engineers Inc. , 2020 , Conference Paper)Nowadays cryptography and their technologies have been with us for a long time. This field of science is developing day by day. Blockchain has come a long way since the birth of its first application. This application is ... -
Highly accurate solutions of a laminar square duct flow in a transverse magnetic field with heat transfer using spectral method
( The American Society of Mechanical Engineers (ASME) , 2005 , Article)A liquid metal forced-convection fully developed laminar flow inside a square duct, whose surfaces are electrically insulated and subjected to a constant temperature in a transverse magnetic field, is solved numerically ... -
Highly accurate solutions of the bifurcation structure of mixed-convection heat transfer using spectral method
( John Wiley & Sons, Ltd. , 2002 , Article)This paper is concerned with producing highly accurate solution and bifurcation structure using the pseudo-spectral method for the two-dimensional pressure-driven flow through a horizontal duct of a square cross-section ... -
Highly active and stable bi-functional NiCoO2 catalyst for oxygen reduction and oxygen evolution reactions in alkaline medium
( Elsevier Ltd , 2019 , Article)Single step solution combustion technique was used to synthesize NiO, Co3O4 and NiCoO2 mixed metal oxide with good crystallinity and uniform properties. XRD spectrum indicates the existence of cubic NiCoO2 phase without ... -
Highly active bifunctional LaMO3 (M=Cr, Mn, Fe, Co, Ni) perovskites for oxygen reduction and oxygen evolution reaction in alkaline media
( Qatar University Press , 2020 , Poster)Lanthanum based electrocatalytically active perovskites, LaMO3 (M=Cr, Mn, Fe, Co, Ni), were synthesized using a single step solution combustion synthesis technique. The perovskites showed exceptional performance for oxygen ... -
Highly Active Lanthanum Perovskite Electrocatalysts (LaMnxCo1-xO3 (0 ≤ x ≤ 1)) by Tuning the Mn:Co Ratio for ORR and MOR in Alkaline Medium
( Springer , 2023 , Article)Lanthanum-based perovskites (LaMnxCo1-xO3 (0 ≤ x ≤ 1)) were synthesized using a solution combustion synthesis technique with variable ratios of Co and Mn to investigate the surface property and electrocatalytic characteristics ... -
Highly active, durable and pH-universal hybrid oxide nanocrystals for efficient oxygen evolution
( Royal Society of Chemistry , 2017 , Article)The development of an active, durable, and low-cost catalyst remains hitherto a grand challenge in energy conversion technologies. Herein, hybrid Ptx-NiMnO3 nanocrystals (NCs) (x = 0.1, 0.5, and 1.0 mM) were synthesized ... -
Highly conductive phase change composites based on paraffin-infiltrated graphite panels for photo/electrothermal conversion and storage
( Elsevier , 2023 , Article)The extensive utilization of phase change materials (PCMs) for thermal energy harvesting, storage, and thermal management is often constrained by their inadequate thermal and electrical conductivity, form instability, and ... -
Highly crystalline and thermally stable poly(aniline-co-2-nitroaniline)
( Springer Nature , 2020 , Article)Abstract: To synthesize a crystalline polymer is unconventional. Here, we found the well-defined hexagonal or rectangular cubical shape of poly(aniline-co-2-nitroaniline)s PA-co-2-NAs through scanning electron microscopy. ... -
Highly dispersed Pt nanoparticles on ultrasmall EMT zeolite: A peroxidase-mimic nanoenzyme for detection of H2O2 or glucose
( Elsevier Inc. , 2020 , Article)In past decade, Pt-based nanomaterials as peroxidase mimics have attracted much attention for H2O2 and glucose detection. However, easy aggregation of Pt nanoparticles (Pt NPs) greatly decreases their peroxidase-like ... -
Highly effective hydrogenation of CO2 to methanol over Cu/ZnO/Al2O3 catalyst: A process economy & environmental aspects
( Elsevier , 2023 , Article)The hydrogenation of CO2 to methanol is one of the promising CO2 utilization routes in the industry that can contribute to emissions mitigation. In this work, improved operating conditions were reported for the sustainable ... -
Highly efficient eco-friendly corrosion inhibitor for mild steel in 5 M HCl at elevated temperatures: experimental & molecular dynamics study
( Nature Publishing Group , 2019 , Article)Laurhydrazide N?-propan-3-one was used as an eco-friendly inhibitor for the corrosion of mild steel in 5 M HCl at elevated temperatures. Various electrochemical techniques and surface characterization methods were utilized ... -
Highly efficient methanol oxidation reaction on durable Co9S8 @N, S-doped CNT catalyst for methanol fuel cell applications
( Elsevier Ltd , 2022 , Article)The implementation of direct methanol fuel cells is seen as a reliable factor in the future energy mix. Efficient energy conversion from methanol requires an active and durable catalyst to drive the anodic methanol oxidation ... -
Highly efficient nonenzymatic glucose sensors based on CuO nanoparticles
( Elsevier B.V. , 2019 , Article)In this work, copper nanoparticles using three different modes are synthesized and evaluated for electrochemical properties towards non-enzymatic glucose biosensors. Copper oxide nanoparticles thus obtained are characterized ... -
Highly efficient photocatalytic z-scheme hydrogen production over oxygen-deficient WO3-x nanorods supported Zn0.3Cd0.7S heterostructure
( Nature Publishing Group , 2017 , Article)The demand for clean renewable energy is increasing due to depleting fossil fuels and environmental concerns. Photocatalytic hydrogen production through water splitting is one such promising route to meet global energy ... -
Highly efficient sustainable photocatalytic Z-scheme hydrogen production from an α-Fe2O3 engineered ZnCdS heterostructure
( Elsevier , 2017 , Article)We present an α-Fe2O3/Zn0.4Cd0.6S heterostructure that shows visible light photocatalytic H2 production as high as 536.8μmolh−1 with apparent quantum efficiency of 11.2% at 420nm. The UV–vis diffuse reflectance spectra of ...
