Results 31 to 40 of about 68,649 (130)

Design of experiment study of the parameters that affect performance of three flow plate configurations of a proton exchange membrane fuel cell [PDF]

open access: yes, 2010
Low temperature hydrogen fuel cells are electrochemical devices which offer a promising alternative to traditional power sources. Fuel cells produce electricity with a reaction of the fuel (hydrogen) and air. Fuel cells have the advantage of being clean;
Carton, James, Olabi, Abdul-Ghani
core   +1 more source

The effect of polyether on the separation of pentlandite and serpentine

open access: yesJournal of Materials Research and Technology, 2015
The effect of polyether on the separation of pentlandite from serpentine has been studied. In addition to flotation and sedimentation tests, electrophoresis and adsorption tests have been conducted.
Xiaowen Zhou, Bo Feng
doaj   +1 more source

Native Metallophytes on Ultramafic Wooded Grassland in Sta Cruz, Mindoro Occidental, Philippines: Insights Into Phytostabilization and Forest Restoration

open access: yesSains Tanah: Journal of Soil Science and Agroclimatology, 2023
The native metallophytes species are the optimum choice to restore degraded areas on ultramafic soil. However, a limited restorative floristic survey on the wooded grassland of Mindoro Occidental had been reported. Four 20 m x 20 m plots were established
Marilyn Ong Quimado   +5 more
doaj   +1 more source

An efficient 1-D periodic boundary integral equation technique to analyze radiation onto straight and meandering microstrip lines [PDF]

open access: yes, 2012
A modeling technique to analyze the radiation onto arbitrary 1-D periodic metallizations residing on a microstrip substrate is presented. In particular, straight and meandering lines are being studied. The method is based on a boundary integral equation,
De Zutter, DaniĆ«l   +2 more
core   +1 more source

Serpentine retinal pigment epithelial tear

open access: yesTaiwan Journal of Ophthalmology, 2021
We report a case of retinal pigment epithelial tear in a patient with peripheral exudative hemorrhagic chorioretinopathy (PEHCR). A 60-year-old diabetic female presented with left eye metamorphopsia. Fundus examination showed bilateral peripheral retinal
Aditya Maitray   +2 more
doaj   +1 more source

Achieving the Carbon-Neutral Production of Magnesia and Silica Products Using a HCl-Based Process in Serpentine Feedstock

open access: yesMaterials Proceedings, 2021
Magnesia is mainly produced from carbonate sources (magnesite (MgCO3)), and seawater brines (MgCl2). The calcination of magnesite and the precipitation of brine using quicklime (CaO) are processes that have significant CO2 footprints, even before ...
David Konlechner, Gregor Kappacher
doaj   +1 more source

Granular-Scale Elementary Flux Emergence Episodes in a Solar Active Region [PDF]

open access: yes, 2012
We analyze data from Hinode spacecraft taken over two 54-minute periods during the emergence of AR 11024. We focus on small-scale portions within the observed solar active region and discover the appearance of very distinctive small-scale and short-lived
.   +3 more
core   +3 more sources

Climate and plant community diversity in space and time. [PDF]

open access: yes, 2020
Climate strongly shapes plant diversity over large spatial scales, with relatively warm and wet (benign, productive) regions supporting greater numbers of species.
Harrison, Susan   +2 more
core   +2 more sources

Preliminary physicochemical evaluation of Kushta-e-Aahar Mohra: A unique formulation of Unani medicine

open access: yesAncient Science of Life, 2018
Introduction: Zahar Mohra (Serpentine/Bezoar stone) is mentioned as efficacious and a useful drug indicated in heart diseases in Unani medicine. It is also used to remove effect of poison and is termed in Unani Medicine as Daf-e-Zahar or Fad-e-Zahar ...
Mohd Akhtar Ali   +5 more
doaj   +1 more source

Widespread abiotic methane in chromitites [PDF]

open access: yes, 2018
Recurring discoveries of abiotic methane in gas seeps and springs in ophiolites and peridotite massifs worldwide raised the question of where, in which rocks, methane was generated.
Etiope, G.   +8 more
core   +1 more source

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