Results 121 to 130 of about 325,139 (297)
COSHes Help Build Healthy Unions [PDF]
, 1990 [Excerpt] Boston\u27s current fiscal crisis has made the refrain we have no money to fix it seem like a broken record. Yet, recently, Boston City Hospital workers have won improved ventilation, larger work rooms, air conditioning in certain areas, and ...
Lessin, Nancy, Richardson, Charley
core +1 more source
Advanced Engineering Materials, EarlyView.It is shown that laser ablation pretreatment under oxygen‐free conditions enables copper–aluminium bonding at significantly lower deformation degrees and improved properties compared to mechanical brushing. Laser ablation further increases interface contact area and induces favourable residual stress states and microstructural compatibility ...
Khemais Barienti +11 more
wiley +1 more source
Enhancement of thermofluid characteristics via a triple-helical tube heat exchanger
Scientific ReportsAn investigation of the thermal and hydraulic performance of a novel triple-helical tube heat exchanger, the THTHE, is presented. The novel design is a modified design of a DHTHE created by adding a third tube to a DHTHE tube.
Abdalla Gomaa +2 more
doaj +1 more source
Air pollutant levels in air-conditioned and naturally ventilated museums: a pilot study [PDF]
, 1999 An air-conditioned and a naturally ventilated museum in a highly polluted part of London were compared for effectiveness of pollution control. Nitrogen dioxide, sulphur dioxide and hydrogen sulphide concentrations were measured inside and outside using ...
Blades, N, Cassar, M, Oreszczyn, T
core
Advanced Engineering Materials, EarlyView.Creep experiments at 900°C on coarse‐grained steel‐ceramic composites containing recycled magnesia reveal that higher ceramic volume fractions significantly enhance the creep resistance. Detailed EBSD investigations identify subgrain formation in the steel matrix as the dominant deformation mechanism.
Moritz Müller +6 more
wiley +1 more source
Aerosol and Air Quality ResearchObjective This study employs numerical simulations to investigate how the structural configurations of collecting plates (flat vs. corrugated plates) affect the efficiency of wire-plate electrostatic precipitators (ESPs).
Heng Shen +4 more
doaj +1 more source
Air Conditioning Hybrid Electric Vehicles while Stopped in Traffic [PDF]
, 2004 HEVs idle their engine during the stops to meet the cooling and heating needs. But, idling decreases fuel economy and increases engine wear and emissions.
Bullard, C.W., Malik, T.
core
Advanced Engineering Materials, EarlyView.High‐frequency (HF) welding of steel is limited by oxide inclusions that degrade weld quality. This study demonstrates, for the first time, the integration of a nonthermal Ar/H2 dielectric barrier discharge (DBD) plasma jet into HF welding. Local plasma treatment provides effective shielding and in‐situ oxide reduction, resulting in markedly fewer and ...
Viktor Udachin +4 more
wiley +1 more source
Scientific ReportsThe characteristics of heat transfer and fluid flow of twisted spiral tubes with different pitches and depths have been investigated experimentally with respect to a conventional tube (smooth tube) as a particular reference.
Abdalla Gomaa +2 more
doaj +1 more source
Influence of an Argon/Silane Atmosphere on the Temperature of a Thermal Plasma
Advanced Engineering Materials, EarlyView.The influence of a silane‐doped argon atmosphere on the chemical composition and temperature of a thermal nontransferring argon plasma is investigated using optical emission spectroscopy. As a result of the high amount of free electrons resulting from the stepwise ionization and dissociation of the silane molecule, even a silane addition of 0.01 vol ...
Lena Kreie +4 more
wiley +1 more source