Results 21 to 30 of about 35,569 (287)

Plants on Rich-Magnesium Dolomite Barrens: A Global Phenomenon

open access: yesBiology, 2021
For botanists and ecologists, the close link between some plants and substrates, such as serpentine or gypsum, is well known. However, the relationship between dolomite and its flora has been much less studied, due to various causes.
Juan Mota   +5 more
doaj   +1 more source

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;
Olabi, Abdul-Ghani, Carton, James
core   +1 more source

Petrogenetic Study on Ultramafic Rocks from Waturapa and Surrounding Areas, South Konawe Regency, Southeast Sulawesi Province

open access: yesJGEET: Journal of Geoscience, Engineering, Environment and Technology, 2023
The petrogenesis study of ultramafic igneous rocks in the South Konawe Region has been carried out by several previous researchers, however, petrogenesis of ultramafic igneous rocks in the Waturapa Region has never been carried out in detail.
Hasria   +3 more
doaj   +1 more source

Temperature reduction during brucite-based magnesia cement production [PDF]

open access: yesИнженерно-строительный журнал, 2013
The article considers the problem of reducing the energy consumption during the production process of magnesia cement based on brucite admixed with serpentine, because this solid requires roasting at high temperatures (1100–1200°C).
B.Y. Trofimov   +4 more
doaj   +1 more source

Adaptations to the stressful combination of serpentine soils and Mediterranean climate drive plant functional groups and trait richness

open access: yesFrontiers in Plant Science, 2023
IntroductionPlant functional traits (FTs) are important for understanding plant ecological strategies (e.g., drought avoidance), especially in the nutrient-poor soils of serpentine ecosystems. In the Mediterranean areas, such ecosystems are characterized
Noelia Hidalgo-Triana   +4 more
doaj   +1 more source

Bio-Inspired Gradient Heterogeneous Architectures for Ultrasensitive and Robust Strain Sensors via Programmable Crack Engineering. [PDF]

open access: yesAdv Sci (Weinh)
Inspired by the insect campaniform sensillum, a heterogeneous bilayer strain sensor is developed based on a unique impedance mismatch and three‐dimensional structural dynamic percolation strategy. The sensor enables real‐time multi‐joint teleoperation of three joints and the gripper using a six‐degree‐of‐freedom robotic‐arm platform.
Wu Q, Wang T, Wang Y, Feng Y, Huang Y.
europepmc   +2 more sources

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

Microfluidic Gratings for X-Ray Phase Contrast Imaging. [PDF]

open access: yesAdv Sci (Weinh)
This work establishes a new protocol for the fabrication of X‐ray gratings that exploits the advantages of microfluidics and enables a more inexpensive, faster, and scalable production process. These X‐ray devices are fundamental for implementing X‐ray phase contrast imaging (XPCI) in laboratory and clinical settings, yet their costly and complex ...
Rossi A   +10 more
europepmc   +2 more sources

A New Species of Argophyllum (Argophyllaceae) with Notes on the Species from New Caledonia and Nickel Hyperaccumulation

open access: yesPlants, 2021
The taxonomy of Argophyllum (Argophyllaceae) in New Caledonia is reviewed here. All names validly published in Argophyllum in this archipelago are discussed and lectotypified when necessary.
Yohan Pillon, Vanessa Hequet
doaj   +1 more source

Study on Process Mineralogy of a Copper-Nickel Polymetallic Sulfide Ore

open access: yesKuangchan zonghe liyong, 2022
In this study, the process mineralogy of a copper-nickel polymetallic sulfide ore was studied. Results show that the main useful minerals in the ore are nickel-pyrite and chalcopyrite.
Weijun Tan, Zeping Feng
doaj   +1 more source

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