搜索结果: 61-75 共查到“理学 Past”相关记录158条 . 查询时间(0.062 秒)
Rewriting the history of volcanic forcing during the past 2000 years A year-by-year record of volcanic eruptions from a comprehensive Antarctic ice core array（图）
The desert The South Pole. The volcano. Climate change Sulfur dioxide Sulfate Ice cores
2014/7/18
RENO – A team of scientists led by Michael Sigl and Joe McConnell of Nevada’s Desert Research Institute (DRI) have completed the most accurate and precise reconstruction to date of historic volcanic s...
Th-normalized fluxes of biogenic components from the central and southernmost Chilean margin over the past 22,000 years
biological pump paleoproductivity thorium 230 (230Th) southern westerlies Chile
2017/4/11
We report on 230Th-normalized fluxes of biogenic components—total organic carbon (TOC), total nitrogen (TN),
calcium carbonate (CaCO3), and biogenic opal (SiOPAL)—from two sediment cores collected at...
Can a Satellite Galaxy Merger Explain the Active Past of the Galactic Center?
Satellite Galaxy Merger Explain Active Past Galactic Center
2011/10/9
Observations of the Galactic Center (GC) have accumulated a multitude of "forensic" evidence indicating that several million years ago the center of the Milky Way galaxy was teaming with starforming a...
Historical superprocess limits for population models with past dependence and competition
Historical superprocess interacting particle system limit theorem
2011/9/1
Abstract: We consider a population structured in trait. When a birth occurs, the trait of the parent is hereditarily transmitted to the offspring unless a mutation occurs. We associate with each indiv...
D/H variation in terrestrial lipids from Santa Barbara Basin over the past 1400 years: A preliminary assessment of paleoclimatic relevance
Santa Barbara Basin paleoclimatic relevance
2014/4/8
We analyzed D/H ratios of common terrestrial leaf wax lipids in a 1400 year sediment core from the Santa
Barbara Basin (SBB) to test whether they accurately record terrestrial climate in Southern Cal...
Past terrestrial water storage (1980–2008) in the Amazon Basin reconstructed from GRACE and in situ river gauging data
water storage Amazon Basin GRACE
2011/3/14
Terrestrial water storage (TWS) composed of surface waters, soil moisture, groundwater and snow where appropriate, is a key element of global and continental water cycle. Since 2002, the Gravity Recov...
We show how the shared information between the past and future|the excess entropy|derives
from the components of directional information stored in the present|the predictive and retrodictive causal s...
We show how the shared information between the past and future|the excess entropy|derives
from the components of directional information stored in the present|the predictive and retrodictive causal s...
We show how the shared information between the past and future---the excess entropy---derives from the components of directional information stored in the present---the predictive and retrodictive cau...
The Past and Future of Phyllostachys nigra in Putuo Mountains
Black Bamboo Goddess of Mercy Putuo Mountains
2011/12/15
This article describes the characteristics of black bamboo, the culture origins of Goddess of Mercy in Putuo Mountain and the Connection between them; reviewed the cultural history of the black bamboo...
Development of instability of dark solitons generated by a flow of Bose-Einstein condensate past a concave corner
Pattern Formation and Solitons (nlin.PS) Quantum Gases (cond-mat.quant-gas)
2010/11/10
The stability of dark solitons generated by a supersonic flow of a Bose-Einstein condensate past a concave corner (or a wedge) is studied. It is shown that solitons in the dispersive shock wave genera...
Planetary Nebula Surveys: Past, Present and Future
Stars post-AGB – planetary nebulae general – surveys general
2010/11/10
In this review we cover the detection, identification and astrophysical importance of planetary nebulae (PN). The legacy of the historic Perek & Kohoutek and Acker et al. catalogues is briefly covered...
We study steady flow of a second grade fluid past an obstacle in three space dimensions. We prove existence of solution in weighted Lebesgue spaces with anisotropic weights and thus existence of the ...
Panspermia, Past and Present: Astrophysical and Biophysical Conditions for the Dissemination of Life in Space
Radiation pressure Cosmic rays Micro-organisms Viruses Information
2010/11/9
Astronomically, there are viable mechanisms for distributing organic material throughout the Milky Way. Biologically, the destructive effects of ultraviolet light and cosmic rays means that the majori...
Time-variability in the Interstellar Boundary Conditions of the Heliosphere over the past 60,000 years: Impact of the Solar Journey on the Galactic Cosmic Ray Flux at Earth
Time-variability the Interstellar Boundary Conditions
2011/1/10
During the solar journey through galactic space, variations in the physical properties of the surrounding interstellar material (ISM) modify the heliosphere and modulate the flux of galactic cosmic ra...