Results 111 to 120 of about 34,873 (245)

The Thirty Meter Telescope International Observatory facilitating transformative astrophysical science [PDF]

open access: yes, 2017
The next major advancement in astronomy and cosmology will be driven by deep observations using very sensitive telescopes with high spatial and spectral resolution capabilities. An international consortium of astronomers, including Indian astronomers are
Anupama, G. C.   +2 more
core   +1 more source

Zero Temperature Glass Transition in the Two-Dimensional Gauge Glass Model

open access: yes, 2004
We investigate dynamic scaling properties of the two-dimensional gauge glass model for the vortex glass phase in superconductors with quenched disorder.
B.J. Kim   +24 more
core   +1 more source

Late Holocene moisture variability in Arctic Alaska from chitin δ18O

open access: yesBoreas, EarlyView.
Amplified warming in the Arctic has resulted in reduced sea‐ice extent, which can impact regional climate dynamics. Elucidating past moisture variability in response to changing temperatures and sea‐ice conditions can offer insight into how anthropogenic climate change may impact Arctic areas such as the Alaskan North Slope in the future. We contribute
Briana A. Edgerton, Melissa L. Chipman
wiley   +1 more source

Stable isotopes in diatom silica [PDF]

open access: yes, 2010
Diatom silica is a form of biogenic opal (SiO2.nH2O, Figure 1) containing oxygen, silicon, carbon and nitrogen isotopes that can be used in lacustrine and marine paleoenvironmental studies.
Leng, Melanie J., Swann, George E.A.
core  

Favorable Eruption Despite External Replacement Root Resorption in Delayed Replantation of Avulsed Teeth Treated With Regenerative Endodontics—An Observational Study

open access: yesDental Traumatology, EarlyView.
ABSTRACT Aim To assess the eruption patterns and progression of external replacement root resorption of eight teeth that were avulsed and had delayed replantation treated by regenerative endodontic treatment (RET). Methodology In total, 102 traumatised anterior teeth were treated with regenerative endodontic treatment (RET) between December 2016 and ...
Arieh Y. Kaufman   +3 more
wiley   +1 more source

Overcoming Polyatomic Interferences in Sulfur Isotope Measurement Using MC‐ICP‐MS

open access: yesGeostandards and Geoanalytical Research, EarlyView.
Key Points Optimising plasma conditions via the normalised argon index (NAI) reduces polyatomic interferences, allowing accurate sulfur isotope measurement in low‐resolution mode on MC‐ICP‐MS. Low‐resolution mode enhances sensitivity by approximately threefold compared with conventional high‐resolution analysis.
Yang Yu   +4 more
wiley   +1 more source

Effects of Bans on Heavy Lorries in London: Impacts on Manufacturing & Service Industries [PDF]

open access: yes, 1982
The report evaluates the extent to which representative samples of manu- facturing and service firms drawn from the inner and outer London areas of South Shoreditch and Brimsdown respectively would be affected by proposed bans on 16 ton and 24 ton GVW ...
May, A.D., Patterson, N.S.
core  

Six Ca‐Mg‐Fe Carbonate Reference Materials for In Situ Measurement of Oxygen and Carbon Isotope Ratios

open access: yesGeostandards and Geoanalytical Research, EarlyView.
Key Points Six new Ca‐Mg‐Fe carbonate reference materials are available to the global geochemical community for calibrating oxygen and carbon isotope ratios by SIMS. Significant compositional matrix effects were observed in the dolomite‐ankerite and magnesite‐siderite series during SIMS analysis. Compositional matrix effects correlate with Fe variation.
Maria Rosa Scicchitano   +10 more
wiley   +1 more source

Non‐native pink salmon Oncorhynchus gorbuscha carcasses benefit native benthic macroinvertebrates

open access: yesJournal of Fish Biology, EarlyView.
Abstract The invasion of the North Atlantic by pink salmon Oncorhynchus gorbuscha has raised concerns regarding their impact on coastal rivers. Although the influence of marine‐derived nutrients from returning adult O. gorbuscha on rivers in their native range has received much attention, the ecological consequences of invasive O.
Hui Wei   +9 more
wiley   +1 more source

Geochemical and Seismic Constraints on the Role of Mud Diapirs in Petroleum Migration and Accumulation in the Recôncavo Basin, NE Brazil

open access: yesJournal of Petroleum Geology, EarlyView.
ABSTRACT In the Recôncavo Basin, Northeast of Brazil, mud diapirs have been reported for decades, but their role within the basin's petroleum system remains poorly constrained. Here, we combine 2D seismic interpretation, field observations, and organic geochemical analyses of rocks and oil seeps to investigate the relationship between diapirism and ...
Cora Mattos   +3 more
wiley   +1 more source

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