Browsing University of Hertfordshire by Title
Now showing items 7876-7895 of 24147
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Experimental astrophysical reaction rates of threshold (p,n)-reactions on Pd isotopes
(American Institute of Physics (AIP), 2008)Astrophysical S-factors for (p,n) reactions on stable Pd isotopes derived from experimental cross sections were compared to statistical model predictions with the NON-SMOKER code. Satisfactory agreement was found. Reaction ... -
Experimental Characterization of Electrical Discharge Machining of Aluminum 6061 T6 Alloy using Different Dielectrics
(2019-09-01)Electrical discharge machining is a non-traditional machining method broadly employed in industries for machining of parts that have typical profiles and require great accuracy. This paper investigates the effects of ... -
Experimental cross section of Sm-144(alpha, gamma)Gd-148 and implications for the p-process
(1998-05-20)The cross section of the Sm-144(alpha, gamma) Gd-148 reaction has been measured at bombarding energies in the 10.5-13.4 MeV range using an activation method based on the off-line alpha-activity measurement of the Gd-148 ... -
Experimental cross sections of Ho 165 (α,n) Tm 168 and Er 166 (α,n) Yb 169 for optical potential studies relevant for the astrophysical γ process
(2014-06-30)Background: Optical potentials are crucial ingredients for the prediction of nuclear reaction rates needed in simulations of the astrophysical γ process. Associated uncertainties are particularly large for reactions involving ... -
Experimental evaluation into novel, low cost, modular PEMFC stack
(Elsevier, 2012)The Polymer Electrolyte Membrane Fuel Cell (PEMFC), despite being regarded as an ideal replacement to the internal combustion engine, is still not an economically attractive pri-mover due to a number of key challenges that ... -
Experimental evaluation of pulse electric current effect on residual stresses in composite-to-copper joints
(2008)Experimental method for evaluation of residual stress distribution in carbon fiber reinforced carbon composite jointed to copper is presented. Pulse electric current passed through composite-to-copper joint essentially ... -
Experimental evaluation of the electric pulse effect on residual stresses in a Ti-Al-Si-Ag coating
(2008)Experimental results and stress-strain state simulation by the finite element method show that a thin oxidation-resistant coating sputtered onto a titanium alloy substrate develops high-level residual stresses. The electric ... -
Experimental field investigation of impact and blast load resistance of Ultra High Performance Fibre Reinforced Cementitious Composites (UHPFRCCs)
(2015-10-01)Abstract Ultra High Performance Fibre Reinforced Cementitious Composites (UHPFRCCs) represent a class of cement composites which have superior characteristics in terms of material properties. These materials have, however, ... -
Experimental investigation and statistical analysis of additively manufactured onyx-carbon fiber reinforced composites
(2020-12-16)Availability of additive manufacturing (AM) has influenced the scientific community to improve on production and versatility of the components created with several associated technologies. Adding multiple substances through ... -
Experimental investigation into a novel Modular PEMFC fuel cell stack
(2015-04-23)The polymer electrolyte membrane fuel cell (PEMFC), despite being regarded as an ideal replacement to the internal combustion engine, is still not an economically attractive prime-mover due to a number of key challenges ... -
Experimental investigation into the effect of magnetic fuel reforming on diesel combustion and emissions running on wheat germ and pine oil
(2019-04-01)The present study aims to explore the effect of fuel ionisation on engine performance, emission and combustion characteristics of a twin cylinder compression ignition (CI) engine running on biofuel. Wheat germ oil (WGO) ... -
Experimental investigation into the effects of two-stage injection on fuel injection quantity, combustion and emissions in a high-speed optical common rail diesel engine
(2013-07-01)Diesel combustion and the formation of pollutants are directly influenced by the spatial and temporal distributions of the fuel within the combustion chamber of an internal combustion engine. The requirements for more ... -
Experimental Investigation of a Novel Design of Proton Exchange Membrane Fuel Cell Stack
(2013-03)The results of a design study of a novel proton exchange membrane fuel cell (PEMFC) are presented in this paper. The need for alternative sustainable energy generation is growing as finite fossil fuel resources are gradually ... -
An experimental investigation of attribute-framing effects on ordering decisions in dual sourcing: Role of attention to suppliers’ information
(2023-06-26)Purpose: Despite its significance, research on how attribute framing affects ordering decisions in dual sourcing remains insufficient. Hence, this study investigated the effects of attribute framing in a sourcing task ... -
Experimental Investigation of Decoupled Discontinuous PWM Strategies in Open-End Winding Induction Motor Supplied by a Common DC-link
(2023-06-01)Currently, open-end winding induction motors fed by a dual inverter (OEWIM-DI) present an innovative approach to enhance the performance of modern electric drive systems, such as electrical vehicles and electric aircraft ... -
Experimental investigation of direct injection charge cooling in optical GDI engine using tracer-based PLIF technique
(2014-11-30)Investigation of direct injection charge cooling effects is indispensable in design and development of new combustion systems for Gasoline Direct Injection (GDI) engines. The charge cooling can be utilized to increase ... -
Experimental investigation of effects of dwell angle on fuel injection and diesel combustion in a high-speed optical CR diesel engine
(2013-02-01)In order to meet the ever-more stringent emission standards, significant efforts have been devoted to the research and development of cleaner internal combustion engines. Diesel combustion and the formation of pollutants ... -
Experimental Investigation of Heat Transfer in a Rotor-Stator Cavity with Cooling Air Inlet at Low Radius
(2014-09-30)This article presents an experimental investigation of the heat transfer characteristics in a typical rotor–stator system with cooling air inlet at low radius under different dimensionless flow rate (CW) ranges from 1.32 ... -
Experimental investigation of hydraulic effects of two-stage fuel injection on fuel-injection systems and diesel combustion in a high-speed optical common-rail diesel engine
(2014-01-01)In order to meet the ever more stringent emission standards, significant efforts have been devoted to the research and development of internal combustion engines. The requirements for more efficient and responsive diesel ...