Results 91 to 100 of about 327,719 (318)

Identification of Astronomical Cycles in Upper Cretaceous Sifangtai Formation and Constraints on Depositional Age of Uranium Mineralized Sandstones in Qian’an Area of Songliao Basin

open access: yesYuanzineng kexue jishu
Cyclostratigraphy is widely applied in establishing high-precision sequence stratigraphic frameworks and astronomical time scales, making it an important field in the quantitative study of sedimentology.
WANG Junxian1, 2, ,  LI Ziying1, 2, ,  XING Zuochang1, 2,  LIU Jungang1, 2,  SHI Qingping1, 2,  TIAN Mingming1, 2,  JIA Licheng1, 2
doaj   +1 more source

EXTRUSION OF URANIUM, URANIUM ALLOYS, AND URANIUM COMPACTS. A Literature Search [PDF]

open access: yes, 1961
A bibliography of 240 references is presented on the extrusion of U, U alloys, and U compacts. The references were taken from Nuclear Science Abstracts and cover the period Jan. 1951 tc June 1961. (D.L.C.)
openaire   +2 more sources

Improved ion exchange membrane [PDF]

open access: yes, 1975
Membrane, made from commercially-available hollow fibers, is used in reverse osmosis, or dialysis. Fiber has skin layers which pass only small molecules. Macromolecules cannot penetrate skin.
Klein, E., Rembaum, A., Yen, S. P. S.
core   +1 more source

Review of the anatomical basis for predicting plutonium alpha particle radiation induced osteogenic cancers

open access: yesThe Anatomical Record, EarlyView.
Abstract Plutonium was discovered and first synthesized in the early 1940's. Several isotopes of plutonium are used in nuclear technologies, 238Pu for heat generation and 239Pu for energy production and weapons. Both isotopes emit alpha particles, which pose a significant radiation hazard when incorporated into the body.
Scott C. Miller
wiley   +1 more source

A Novel Uranium Quantification Method Based on Natural γ-Ray Total Logging Corrected by Prompt Neutron Time Spectrum

open access: yesApplied Sciences
The drilling core sampling and chemical analysis method for the quantitative determination of solid mineral deposits has several drawbacks, including a low core drilling efficiency, a high core sampling cost, and a long chemical analysis cycle.
Yan Zhang   +9 more
doaj   +1 more source

Origin and Role of Kaolinization in Roll-Front Uranium Deposits and Its Response to Ore-Forming Fluids in the Yili Basin, China

open access: yesGeofluids, 2018
Kaolinite is a common mineral found in most Chinese sandstone-hosted uranium deposits. It occurs particularly in coal-bearing clastic rocks in northwest China, such as the uranium deposits in the Yili Basin, which is well known for hosting several large ...
Z. Y. Liu   +7 more
doaj   +1 more source

Soil uranium, soil gas radon and indoor radon empirical relationships in the UK and other European countries [PDF]

open access: yes, 2010
Least squares (LS) regression analysis is used to develop empirical relationships between uranium in the ground, radon in soil and radon in dwellings to assist in the development of a geogenic radon potential map for Europe.
Appleton, J.D., Miles, J.C.H.
core  

Closing the nutrient loop between urban and rural areas: a case study analyzing the technical potential of recycling fertilizers from urban biorefineries

open access: yesBiofuels, Bioproducts and Biorefining, EarlyView.
Abstract The world's population is expected to grow rapidly, with the vast majority of people living in urban areas. Closing nutrient loops is therefore increasingly important for food security and environmental stability. In Germany however, the current treatment of organic and green waste and sewage sludge (derived from wastewater) includes ...
Marielle Trenkner   +7 more
wiley   +1 more source

Biochar in the circular bioeconomy: a bibliometric analysis of technologies, applications, and trends

open access: yesBiofuels, Bioproducts and Biorefining, EarlyView.
Abstract Biochar has attracted considerable attention in recent years for its wide‐ranging applications, particularly its role in carbon sequestration as a strategy to mitigate greenhouse gas emissions. Its emerging uses within the circular bioeconomy also position it as a valuable tool for environmental management, and ongoing research continues to ...
Jean Agustin Velasquez‐Pinas   +6 more
wiley   +1 more source

Directional Blasting Technology of Slit Charge for Geological Disposal of High-Level Radioactive Waste

open access: yesAdvances in Civil Engineering, 2018
Based on the slit charge technology, the blasting progress and the blasting theory have been studied in detail. Combined with the high-level radioactive waste geological disposal, in which the excavation damaged zone of the surrounding rock is required ...
Ke Man, Xiaoli Liu, Ju Wang, Xiyong Wang
doaj   +1 more source

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