Results 31 to 40 of about 343,754 (314)

Analysis of groundwater dynamic characteristics and hydrogeological model of karst under concealed conditions

Meikuang Anquan, 2021
Based on the data of the two water releasing tests and “5.25” water inrush of collapse columns of Pan’er Coal Mine in Huainan Coalfield, the hydraulic connection between the main aquifers and transmissivity-impermeability of faults were systematically ...
GAO Yuhang, XU Guangquan, DANG Baoquan, ZHANG Haitao, CHEN Guojun, SUN Gui
doaj   +1 more source

The classification and management of limestone pavements - an endangered habitat [PDF]

, 2011
This thesis describes an in-depth study of limestone pavements across North West England and North Wales. The aim was to combine elements of geodiversity and biodiversity in order to create a holistic limestone pavement classification to inform future ...
Willis, Sue D. M.
core  

Rational Fine‐Tuning of MOF Pore Metrics: Enhanced SO2 Capture and Sensing with Optimal Multi‐Site Interactions

Advanced Functional Materials, EarlyView.
A pore tuning strategy to amplify the multi‐site MOF‐SO2 interactions is proposed to achieve an enhanced trace SO2 capture and chemiresistive sensing in highly stable isostructural DMOFs by annelating benzene rings. This work provides a facile strategy to achieve tailor‐made stable MOF materials for specific multifunctional applications.
Shanghua Xing, Abdulrahman Mohabbat, István Boldog, Jens Möllmer, Marcus Lange, Yulyan Haiduk, Tobias Heinen, Vladimir Pankov, Oliver Weingart, Christoph Janiak   +9 more
wiley   +1 more source

Dissolution behavior of partially calcined limestone with residual CO2 in converter slag

Journal of Materials Research and Technology, 2022
Accelerating the dissolution rate of lime in converter slag at the initial stage of steelmaking is conducive to the rapid slagging. In this work, partially calcined limestone with a core–shell structure was prepared, and the dissolution behaviors of lime,
Yufeng Tian, Yu Liu, Guangqiang Li, Yongqian Li, Zhan Zhang, Chong Tan   +5 more
doaj   +1 more source

Petrologic evidence for earliest Miocene tectonic mobility on eastern Taranaki Basin margin [PDF]

, 2006
At Gibsons Beach on the west coast of central North Island, the earliest Miocene (Waitakian) Otorohanga Limestone, the top-most formation in the Te Kuiti Group, is unconformably overlain on an undulating, locally channelised erosion surface by the Early ...
Hood, Steven D., Kamp, Peter J.J., Nelson, Campbell S., Tripathi, Anand Ratnakar Prasad   +3 more
core   +1 more source

The role of limestone and dolomite tailings’ particle size in retention of heavy metals from liquid waste [PDF]

, 2008
Purpose. The study aims at investigating the role of particle size of mineral tailings derived from limestone, limestone marble, dolomite and dolomitic marble in heavy metal adsorption, in both batch and fixed bed conditions, so as to estimate whether ...
Albadarin, Aziz, Chada, Al-Degs, Davis, Farmaki, Farmaki, Freij, García-Sánchez, Ghaemi, Godelitsas, Godelitsas, Godelitsas, Irani, Kocaoba, Lee, Parsiegla, Parsiegla, Rouff, Rouff, Shannon, Stipp, Tsirampides, Wang, Wang, Zachara, Zachara   +26 more
core   +1 more source

Molecular‐Level Insights into Interfacial Adsorption Mechanisms of PFOA on Functional Dolomite Surfaces via AIMD and Spectroscopy

Advanced Materials Interfaces, EarlyView.
Perfluorooctanoic acid (PFOA), ab initio molecular dynamics (AIMD), density functional theory (DFT), Dolomite (DL), metal‐organic frameworks (MOFs), calcined modified dolomite (CDL), zero‐point of charge (PZC), metal‐organic frameworks (MOFs), Fourier transform infrared (FTIR), X‐ray diffraction (XRD), scanning electron microscopy (SEM ...
Yating Yang, Yuhan Li, Zhaohui Li, Hang Wei, Yaqi Wen, Po‐Hsiang Chang, Christopher Rensing, Ahmed I. Osman, Baoyu Kong   +8 more
wiley   +1 more source

H2S Reactions with Limestone and Calcined Limestone.

JOURNAL OF CHEMICAL ENGINEERING OF JAPAN, 1995
Sulfur capture reactions of CaCO3-H2S and CaO-H2S have been investigated under various gaseous mixtures conditions using limestone and calcined limestone of 1 mm diameter in a thermogravimetric analyzer.Sulfidation of limestone (CaCO3-H2S) had a very low initial reaction rate and final conversion than the sulfidation of calcined limestone (CaO-H2S) due
Shi-Ying Lin, Ali Al-Shawabkeh, Hitoki Matsuda, Masanobu Hasatani, Masayuki Horio   +4 more
openaire   +2 more sources

Orbital frequencies in the carbonate sedimentary record: distorted by diagenesis? [PDF]

, 2004
The most important archive of Earth’s climate change through geologic history is the sedimentary rock record. Rhythmic sedimentary alternations are usually interpreted as a consequence of periodic variations in the orbital parameters of the Earth.
Bornholdt, Stefan, Böhm, Florian, Westphal, Karl-Heinz   +2 more
core   +1 more source

Systematic Exploration of 3D Concrete Printing Parameters for Conformal Printing on Sloped Surfaces

Advanced Robotics Research, EarlyView.
A conformal slicing algorithm is developed for robotic 3D concrete printing (3DCP) on sloped surfaces as a first step toward printing slab‐on‐grade foundations on uneven terrain. Systematic experiments quantify the effects of nozzle speed, extrusion rate, and toolpath direction on filament dimension and stability.
Paniz Farrokhsiar, Benay Gursoy, Jose Pinto Duarte   +2 more
wiley   +1 more source