Results 91 to 100 of about 1,305,689 (236)

The Earliest Feathers from the Lower Cretaceous Dabeigou Formation of North Hebei: Implications for the Early Evolution of the Jehol Biota

Integrative Zoology, EarlyView.
This study reports two isolated feather fossils from the Lower Cretaceous Dabeigou Formation in northeastern China. Morphological analyses identified them as the earliest known feathered theropods (potentially including avian) in the Jehol Biota. This finding reveals a complex ecosystem at the dawn of the Jehol Biota, bridging the temporal and faunal ...
Qian Wu, Qian‐Nan Zhang, Dang‐Peng Xi   +2 more
wiley   +1 more source

Hydrocarbon generation-retention-expulsion mechanism and shale oil producibility of the permian lucaogou shale in the Junggar Basin as simulated by semi-open pyrolysis experiments

, 2021
The shale of the Permian Lucaogou Formation in the Jimusar sag, Junggar Basin (abbreviated as the Lucaogou shale) is a typical lacustrine type-II source rock, and is among the most representative target zones for shale oil exploration in China.
Hou, Lianhua, Ma, Weijiao, Liu, Senhu, Luo, Xia, Liu, Jinzhong, Zhao, Zhongying, Lianhua Hou, Xia Luo, Jinzhong Liu, Zhongying Zhao, Weijiao Ma, Senhu Liu   +11 more
core   +1 more source

Structure and agency in emancipatory reform: A blueprint from a Black union

American Journal of Political Science, EarlyView.
Abstract The National Labor Convention of 1869, the first of its kind for African American workers, yielded a grand strategy for achieving full emancipation, in which those long subjected to domination might attain durable independence. Drawing upon decades of Black republican thought, this agenda combined macro‐level reforms targeting agrarian and ...
Benjamin T. Lynerd
wiley   +1 more source

Hydrocarbon Generation and Pore Evolution of Marine Shale from the Longmaxi Formation, NE Sichuan Basin, China

Geosciences
The marine shale of the Longmaxi Formation is the main layer for shale gas exploration and development in the Sichuan Basin. That said, the pore structure in the Longmaxi shale is strongly heterogeneous, and how these pores form and are preserved remains
Xingping Yin, Yuqiang Jiang, Yifan Gu, Yuegang Li, Zhanlei Wang, Xiugen Fu   +5 more
doaj   +1 more source

Mortars From Punic and Hellenistic–Roman Solunto: Materials, Formulations, and Technology

Archaeometry, EarlyView.
ABSTRACT This study presents an archaeometric investigation of 18 hydraulic rendering and bedding mortars from Punic and Hellenistic–Roman Solunto (NW Sicily). The research aimed to characterize raw materials, reconstruct manufacturing sequences, and evaluate technological proficiency through mineralogical and petrochemical analyses.
G. Montana, G. Polizzi, C. Portale, M. Gasparo Morticelli, L. Randazzo   +4 more
wiley   +1 more source

OS-01 SCEEP: Report on economics of environmental protection for a federal oil shale leasing program

, 1971
Prepared for the Director of Natural Resources of the State of Colorado.Authors' names are from citation listed on the Colorado Geological Survey's website.This report was prepared at the request of Thomas W.
Tweedy, John B., Prien, Charles H., Cameron, Russell J., Sargent, Ralph, Cooley, Frank G.   +4 more
core  

Evaluation of the Rb/Sr ratio as an indicator of chemical weathering: a case study from five sedimentary sections in Northeast China

Boreas, EarlyView.
Chemical weathering plays a pivotal role in the Earth's surface material cycle and global climate regulation. It not only facilitates the reconstruction of palaeoclimate characteristics but also provides essential insights into Earth's evolutionary history.
Zhenyu Wei, Yuanyun Xie, Jie Meng, Lei Sun, Chunguo Kang, Yunping Chi, Peng Wu, Haijin Liu, Ruonan Liu, Ruitong Chang   +9 more
wiley   +1 more source

Seashore marine table quiz [PDF]

, 2013
Develop an increasing awareness of plants and animals that live in local marine environments including the seashore, seas and oceans of Ireland. After learning all about the seashore and other marine related lessons, this quiz can be used to evaluate ...
Marine Institute
core   +2 more sources

Oceans of Opportunity - Exploring Ireland’s Marine Resources: Review of Projects 2000–2005

, 2006
This publication gives an overview of projects and some of the achievements of the research and development activity funded under the Marine RTDI in the current National Development Plan (2000–2006).
Marine Institute
core   +1 more source

Fracability evaluation of the middle-upper Permian marine shale reservoir in well HD1, western Hubei area. [PDF]

Sci Rep, 2023
Jiang S, Zhou Q, Li Y, Yang R.
europepmc   +1 more source