Results 71 to 80 of about 7,798 (251)

Pinguicula brendae (Lentibulariaceae) sp. nov., a carnivorous plant from a tropical montane cloud forest in Hidalgo, Mexico

Nordic Journal of Botany, EarlyView.
A new species of Lentibulariaceae, Pinguicula brendae Rodríguez‐Ramírez, H.Shimai & A.R. Andrés‐Hernández, is described based on its unique morphological characteristics. This species is restricted to limestone rock walls in the San Bartolo Tutotepec municipality, central‐eastern Hidalgo, Mexico, where it inhabits a single locality on vertical, north ...
Ernesto C. Rodríguez‐ Ramírez, Hiro Shimai, Agustina R. Andrés‐ Hernández   +2 more
wiley   +1 more source

Permafrost Distribution in the Canadian Rockies: Key Variables Influencing Patch‐Scale Variability

Permafrost and Periglacial Processes, EarlyView.
ABSTRACT The spatial distribution of permafrost in mountainous regions is influenced by various factors such as topography, climate, vegetation, and substrate. Despite the existence of comprehensive permafrost maps at national and global levels, they fail to accurately represent the patch‐scale (e.g., < 25 m) permafrost distribution in characteristic ...
Gerardo Zegers, Masaki Hayashi, Pablo A. Mendoza   +2 more
wiley   +1 more source

Experimental study on the long-term conductivity of self-support fracture in deep shale reservoirs

Journal of Petroleum Exploration and Production Technology
Reservoir modification fracturing technology is one of the key technologies for the effective development of deep shale gas reservoirs. But the low initial production and fast decreasing after fracturing deep shale gas wells restrict the efficient ...
Yu Sang, Yintong Guo, Haoyong Huang, Debin Xia, Liqing Chen, Zhen Zhang, Junchuan Gui   +6 more
doaj   +1 more source

Experimental Study on Mechanical Properties of Rock in Water-Sensitive Oil and Gas Reservoirs Under High Confining Pressure

Applied Sciences
Injecting high-pressure fluid into a reservoir rock mass will change the mechanical properties of the rock; the strength and safety of a shale well wall are also extremely critical.
Mingfei Li, Jingwei Liang, Yihua Dou
doaj   +1 more source

Deciphering Freeze–Thaw Dynamics In Rockwalls: A Novel Approach for High Accuracy Regional‐Scale Modeling

Permafrost and Periglacial Processes, EarlyView.
ABSTRACT Using a large and novel array of instruments on five rockwalls in northern Gaspesia, their respective surface energy balances were calculated and their thermal regimes were measured and modeled to depths exceeding the seasonal frost penetration.
Tom Birien, Francis Gauthier
wiley   +1 more source

Evaluating Testability of Permafrost Models Through Physical and Thermal Testing in Complex Mountain Terrain, Yukon, Canada

Permafrost and Periglacial Processes, EarlyView.
ABSTRACT Due to its subsurface nature, permafrost cannot be directly observed with the naked eye or optical remote sensing. Consequently, accurately describing its distribution and thermal state is challenging. This is especially true in vast, remote environments, where obtaining comprehensive field data is demanding or improbable.
Ria Nicholson, Philip P. Bonnaventure, Nick C. Noad, Madeleine C. Garibaldi, Rabecca Thiessen, Will Kochtitzky   +5 more
wiley   +1 more source

Rock Breaking Simulation and Optimization of PDC Bit for Jimsar Shale Formation

Shiyou jixie
Conventional planar-cutter PDC bit exhibits prominent problems in drilling， such as severe wear， frequent cutter breakage and short footage， resulting in low drilling efficiency and high cost. To improve the drilling speed and reduce the drilling cost in
Zang Chuanzhen
doaj   +1 more source

Who gets redeployed? Inventor characteristics and resource redeployment decisions

Strategic Management Journal, EarlyView.
Abstract Research Summary While the literature highlights the benefits of internally redeploying resources, there is less empirical guidance on which resources are most likely to be redeployed. We examine the relationship between inventor characteristics and redeployment decisions, motivated by the tension between costs and benefits of keeping a ...
Kyungsoo Kim, Isin Guler, Samina Karim
wiley   +1 more source

Numerical simulation of hydraulic fracture propagation after thermal shock in shale reservoir

Journal of Petroleum Exploration and Production Technology
The scale of propagation of hydraulic fractures in deep shale is closely related to the effect of stimulation. In general, the most common means of revealing hydraulic fracture propagation rules are laboratory hydraulic fracture physical simulation ...
Jianfa Wu, Bo Zeng, Liqing Chen, Haoyong Huang, Yintong Guo, Wuhao Guo, Wenjing Song, Junfeng Li   +7 more
doaj   +1 more source

Forgoing Nuclear: Nuclear Power Plant Closures and Carbon Emissions in the United States

Southern Economic Journal, EarlyView.
ABSTRACT This paper examines the effect of nuclear power plant decommissioning on electricity generation and carbon emissions in the United States. Using data on nuclear reactor closures in the United States between 1993 and 2022 and data on state‐level carbon emissions and electricity generation from the Energy Information Administration (EIA), this ...
Luke Petach
wiley   +1 more source