Results 51 to 60 of about 2,725,424 (194)

Distribution characteristics and mechanisms of CH4 and CO2 adsorption in montmorillonite nanopores in water-bearing and saline environments

open access: yesMeitian dizhi yu kantan
BackgroundCarbon capture, utilization, and storage (CCUS) has emerged as a significant way to reduce greenhouse gas emissions under the guidance of the strategic goals of peak carbon dioxide emissions and carbon neutrality.
Kai DU   +3 more
doaj   +1 more source

Double universality of a quantum phase transition in spinor condensates: the Kibble-\.Zurek mechanism and a conservation law

open access: yes, 2012
We consider a phase transition from antiferromagnetic to phase separated ground state in a spin-1 Bose-Einstein condensate of ultracold atoms. We demonstrate the occurrence of two scaling laws, for the number of spin fluctuations just after the phase ...
Emilia Witkowska   +5 more
core   +1 more source

Temporal and spatial variation of limnological variables and biomass of different macrophyte species in a Neotropical reservoir (São Paulo - Brazil) [PDF]

open access: yes, 2013
Aim: This study reports an investigation of limnological characteristics and aquatic macrophyte occurrence in a neotropical reservoir in order to assess the spatio-temporal variation of water and sediment variables and their influence on plant ...
Bottino, Flávia   +2 more
core   +2 more sources

Multiomics analysis of metabolic heterogeneity in cervical cancer cell lines with or without HPV

open access: yesFrontiers in Oncology, 2023
Metabolomics analysis revealed the metabolic heterogeneity of cervical cancer (CC) cell lines C33A and CaSki, and their molecular mechanisms were explored.
Xu Liu   +17 more
doaj   +1 more source

Occurrence and recoverability of shale oil in Paleogene formation, Subei Basin

open access: yesFrontiers in Earth Science
In recent years, significant breakthroughs have been made in the exploration and development of lacustrine shale oil, but the stable and guaranteed production of shale oil still faces huge challenges. Quantitative characterization of the occurrence state
Peng Jin-Ning   +3 more
doaj   +1 more source

Occurrence State and Extraction of Lithium from Jinyinshan Clay-Type Lithium Deposit, Southern Hubei: Novel Blank Roasting–Acid Leaching Processes

open access: yesApplied Sciences
Addressing the technological bottlenecks in the efficient utilization of clay-type Li deposits in China, this study systematically investigates Li occurrence states and develops clean extraction processes using the Jinyinshan clay-type Li deposit in ...
Hao Zhang   +9 more
doaj   +1 more source

Field-effect-driven half-metallic multilayer graphene

open access: yes, 2018
Rhombohedral stacked multilayer graphene displays the occurrence of a magnetic surface state at low temperatures. Recent angular resolved photoemission experiments demonstrate the robustness of the magnetic state in long sequences of ABC graphene.
Baima, Jacopo   +2 more
core   +2 more sources

Comparative Study on REE Occurrence Mode in Ion- adsorption Type REE Deposits from Changting, Fujian, and Northern Myanmar

open access: yesKuangchan zonghe liyong
Taking the samples of granite weathering crust ion adsorption rare earth deposits in Changting area of Nanling, Fujian and a place in northern Myanmar as the research objects, the geochemical characteristics, mineral characteristics, composition and ...
Xiaoyu LI   +4 more
doaj   +1 more source

Person Re-identification by Local Maximal Occurrence Representation and Metric Learning [PDF]

open access: yes, 2015
Person re-identification is an important technique towards automatic search of a person's presence in a surveillance video. Two fundamental problems are critical for person re-identification, feature representation and metric learning.
Hu, Yang   +3 more
core   +1 more source

Exploring rare earth mineral recovery through characterization of riebeckite type ore in Bayan Obo

open access: yesHeliyon, 2023
The aim of this study was to characterize the riebeckite type rare earth ore found in the Bayan Obo deposit, in order to identify the distribution and occurrence of both rare earths and gangue species within the ore.
Weiwei Wang   +6 more
doaj   +1 more source

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