Results 61 to 70 of about 9,444 (222)

Main controlling factors and distribution of high-quality deep dolomite reservoirs in typical cratonic basins in China

Journal of Natural Gas Geoscience, 2018
Deep dolomite in cratonic basins is an essential target for future natural gas exploration in China. Statistical analyses of major cratonic basins in China, such as the Sichuan, Tarim, and Ordos basins, indicate that the major types of deep dolomite ...
Jianyong Zhang, Xinfeng Ni, Xingning Wu, Wenzheng Li, Yi Hao, Yanna Chen, Xueju Lü, Mingfeng Gu, Han Tian, Mao Zhu   +9 more
doaj   +1 more source

Evaluating Plasma Torches as a Low‐Decarburization Preheating Method for MgO–C Refractory Linings

steel research international, EarlyView.
This study evaluates direct current (DC) plasma torches using nitrogen as an alternative preheating method for magnesia‐carbon (MgO–C) refractory‐lined ladles. Full‐scale trials at 0.7 and 1.5 MW are compared to conventional gas burner. Plasma‐heated samples show lower decarburization and improved surface integrity due to partial sintering and reduced ...
Marcus Holmström, Alvaro Rubio Ordoñez, Roberto Caballero Carlon, Björn Glaser   +3 more
wiley   +1 more source

Double Slag Operating Standard for Mitigation of CO2 Emissions in Basic Oxygen Steelmaking

steel research international, EarlyView.
Basic oxygen furnace (BOF) steelmaking uses a double slag process (DSP) to produce low‐phosphorus steel. To reduce carbon emissions in a BOF, the hot metal ratio (HMR) must be lowered. The present article describes the optimal conditions for DSP operations under low‐HMR conditions: temperature of 1360 ± 5 °C, total Fe content of 10 ± 2 wt%, basicity (=
Kyung Hwan Kim, Joo Hyun Park
wiley   +1 more source

Performance analysis of strengthening reinforced concrete beams under pure torsion using galvanized steel sheets: Experimental and numerical investigation

Structural Concrete, EarlyView.
Abstract Reinforced concrete (RC) beams can be subjected to torsion, and failure due to torsion is brittle and poses a significant risk to occupants. Moreover, strengthening of existing RC beams in torsion may be required due to the upgrade of the structures or as part of structural rehabilitation.
Ahmed Hamoda, Mizan Ahmed, Ahmad G. Saad, Aref A. Abadel, Saad A. Yehia   +4 more
wiley   +1 more source

Phylogeny, species delimitation and machine learning bridge the gap between DNA sequences and morphology in the lichen genus Arctomia (Arctomiaceae, Ascomycota)

TAXON, EarlyView.
Abstract This study investigates species boundaries in the lichen genus Arctomia (Arctomiaceae, Ascomycota) using an integrative approach combining molecular phylogenetics, full Bayesian population delimitation, heuristic and model‐based species delimitation, and supervised machine learning applied to morphological data.
Stefan Ekman, Måns Svensson, Martin Westberg   +2 more
wiley   +1 more source

High-temperature dolomite in the Lower Cretaceous Cupido Formation, Bustamante Canyon, northeast Mexico: petrologic, geochemical and microthermometric constraints

Revista Mexicana de Ciencias Geológicas, 2018
The Lower Cretaceous Cupido Formation, a carbonate system developed in northeastern Mexico, like many ancient carbonate platforms contains numerous dolomite bodies.
Gabriela Sara Guzzy-Arredondo, Gustavo Murillo-Muñetón, Dante Jaime Morán-Zenteno, José Manuel Grajales-Nishimura, Ricardo Martínez-Ibarra, Peter Schaaf   +5 more
doaj  

Iowa Population Exposures to Metals and Metalloids in Well Water

Environmental Toxicology, EarlyView.
ABSTRACT Previous Iowa studies suggest low levels and chronic arsenic exposures are associated with prostate cancer. The rural Iowa population heavily relies on private wells for drinking water resources and thus is vulnerable to contaminants such as heavy metals found in well water.
Donald L. Simmons, Brian Wels, Alyssa Mattson, Elizabeth M. Miller, Zachary E. Hoggarth, Maya Sternberg, Susie Y. Dai, Dustin May, Michael Schueller, Michael Pentella   +9 more
wiley   +1 more source

A Formation Inversion Algorithm Based on Collaborative Fuzzy Gradient Neural Dynamics for Natural Gamma Logging While Drilling

CAAI Transactions on Intelligence Technology, EarlyView.
ABSTRACT A formation inversion algorithm with real‐time performance and accuracy is crucial for natural gamma logging while drilling (LWD). However, traditional inversion algorithms are often limited by high computational resource consumption and insufficient accuracy.
Juntao Liu, Ruoxiao Liu, Wenxin Li, Zhenming Su, Long Jin   +4 more
wiley   +1 more source

Dolomite in speleothems of Snežna Jama cave

Acta Carsologica, 2015
In Snežna Jama cave, Slovenia, extensive speleothems composed of dolomite, aragonite and hydromagnesite have been found, occurring as 5 cm thick globular crusts coating the host rock.
Andrea Martín Pérez, Adrijan Košir, Bojan Otonicar   +2 more
doaj   +1 more source

Climate Change and (Mal)Adaptation in Tourism‐Intensive Alpine Regions

The Political Quarterly, EarlyView.
Abstract Tourism, especially in winter, accounts for a large share of economic income in Alpine regions. At the same time, these regions are more severely affected by climate change, leading to shorter winter seasons and reduced snow cover. This presents a pressing issue for areas reliant on income from winter tourism through activities such as skiing.
Valentina Ausserladscheider
wiley   +1 more source