Results 111 to 120 of about 219,276 (273)
Shiyou shiyan dizhiThe Paleozoic marine shales in southern China hold great significance for hydrocarbon exploration. However, the lack of organic matter (vitrinite) derived from higher plants in marine sediments leads to considerable uncertainties in maturity assessment ...
Cunyang ZHANG +8 more
doaj +1 more source
Faunal and erosional events in the Eastern Tethyan Sea across the K/T boundary [PDF]
A regional pattern of three closely spaced erosional events at and above the K/T boundary was determined from six Cretaceous/Tertiary boundary sections in the Negev of Israel. The sections were collected from locations throughout the central and northern
Benjamini, C., Keller, G.
core +1 more source
Beyond the Boom: Ensuring Adequate Payment for Mineral Wealth Extraction [PDF]
, 2011 Examines Ohio's severance tax rate and receipts on gas and oil extraction compared with other states, oil and gas production's costs to the state, and potential impact of a higher tax.
Wendy Patton
core
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 +2 more
wiley +1 more source
Frontiers in Earth ScienceThis study addresses wellbore instability in shale formations by conducting mechanical experiments on bedded shale samples with varying hydration times. We fitted experimental data using two anisotropic strength criteria to determine the shale’s strength
Yuqi Zhang, Xuejia Du, Dingwen Jiang
doaj +1 more source
Spatial Distribution of the Surface Geology and 1992 Land Use of the Buffalo River Watershed [PDF]
, 1995 The Buffalo River was established by Congress in 1972 as the first National River in the United States and is one of the few remaining free-flowing streams in Arkansas .
Hofer, Kimberly R. +2 more
core +2 more sources
Oikos, EarlyView.Landscape heterogeneity is widely recognized as a driver of biodiversity, yet its consequences for above‐ground, foliage‐dwelling insect communities under active grassland management remain underexplored. Patch‐burn grazing (PBG), which rotates fire across patches within a grazed landscape, is designed to promote spatial and temporal heterogeneity by ...
Zachary L. T. Bunch +5 more
wiley +1 more source
A New California Oil Boom? Drilling the Monterey Shale [PDF]
, 2013 The Monterey Shale is a vast oil-bearing geologic formation stretching from Southern California almost as far north as San Francisco. The formation has largely been untapped due to its complexity and the challenges presented by the shale's unusual ...
Robert Collier
core
Science Education, EarlyView.ABSTRACT This is the third article in a series, emanating from a project that used social semiotics and phenomenography to explore the role visual representations play in the teaching and learning of chemistry. Building on our earlier work that identified five qualitatively different ways that teachers may use to unpack visual representations in their ...
Emelie Patron +3 more
wiley +1 more source
Sustainable Development, EarlyView.ABSTRACT Chemical engineering faces an increasing imperative to integrate sustainability principles beyond traditional economic and environmental considerations. The social dimension—encompassing impacts on human well‐being, equity, community health, labor practices, and ethical governance—represents a critical yet often underdeveloped pillar within ...
José M. R. C. A. Santos
wiley +1 more source