搜索结果: 16-30 共查到“理学 migration”相关记录99条 . 查询时间(0.064 秒)
Long-term study on ticks reveals shifting migration patterns, disease risks
ticks shifting migration patterns disease risks
2015/5/25
Over nearly 15 years spent studying ticks, Indiana University's Keith Clay has found southern Indiana to be an oasis free from Lyme disease, the condition most associated with these arachnids that are...
Migration history of an ariid Indian catfish reconstructed by otolith Sr/Ca and d18O micro-analysis
otolith oxygen isotope carbon isotope Sr/Ca Ba/Ca
2017/4/10
Understanding catfish ecology is important because catfish constitute one of the largest fish stocks in the coastal IndoPacific
regions. Recent technological advances have enabled the use of biologic...
Testing the effects of basic numerical implementations of water migration on models of subduction dynamics
basic numerical implementations water migration on models subduction dynamics
2015/1/6
Subduction of oceanic lithosphere brings water into the Earth's upper mantle. Previous numerical studies have shown how slab dehydration and mantle hydration can impact the dynamics of a subduction sy...
Some improvements in subbasalt imaging using pre-stack depth migration
improvements subbasalt imaging pre-stack depth migration
2014/12/31
Subbasalt imaging can be improved by carefully
applying pre-stack depth migration. Pre-stack depth migration requires a detailed velocity model and an accurate traveltime calculation.
Beyond cell Adhesion: Exploring the Role of Cadherin-11 Extracellular Processing by ADAM Metalloproteases in Cranial Neural Crest Migration
ADAM Cadherin Cell migration Cell signaling Cranial neural crest Developmental biology/Embryology
2014/12/10
The migration of the cranial neural crest is an essential part of cranio-facial development in every vertebrate embryo. The cranial neural crest (CNC) is a transient population of cells that forms the...
Effects of Phytochemicals from Rhodiola crenulata on Highly Invasive Breast Cancer Cell Lines and Embryonic Models of Migration
Cancer Mammary Metabolism Metastasis Natural Product Rhodiola crenulata
2014/12/10
The root of the Tibetan plant Rhodiola crenulata is part of eastern traditional medicine. Studies have suggested that members of the Rhodiola genus display anticancer properties. In this study we exam...
Diel and lunar cycles of vertical migration extending to below 1000 m in the ocean and the vertical connectivity of depth-tiered populations
Diel and lunar cycles vertical migration extending below 1000 m the ocean the vertical connectivity depth-tiered populations
2014/4/2
We measured diel migration with 11 acoustic Doppler current meter profilers and consistently found diel and lunar cycles of vertical migration from 250 m down to the bathypelagic (> 1000 m). These mea...
Food web consequences of size-based predation and vertical migration of an invertebrate predator (Leptodora kindtii)
size-based predation an invertebrate predator
2014/4/2
In an intensive study of the vertical and horizontal distribution of zooplankton in a eutrophic lake (Katepwa
Lake), we found that only adult Leptodora kindtii (. 5 mm in body size) exhibited diel ve...
3-D parallel shot-gather prestack depth migration
3-D prestack depth migration shot-gather bybrid method MPI parellel PC cluster
2012/8/8
3-D prestack depth migration;shot-gather;bybrid method;MPI parellel;PC cluster。
PAK1's regulation of eosinophil migration and implications for asthmatic inflammation
airway inflammation p-21 activated kinase 1 (PAK1) chemotaxis
2015/5/21
More than 300 million people world-wide suffer from breathlessness, wheezing, chest tightness, and coughing characteristic of chronic bronchial asthma, the global incidence of which is on the rise. Al...
Preface: Migration of radionuclides from the Fukushima Daiichi Nuclear Power Plant accident
Fukushima Daiichi Nuclear Power Plant accident Preface
2017/4/11
On March 11 in 2011, a great earthquake hit the eastern
part of mainland Japan. It triggered several gigantic tsunami
waves that destroyed the coastal areas in Tohoku
and north Kanto districts, whi...
Adaptation and migration of a population between patches
Structured populations phenotypical and spatial structure Hamilton-Jacobi equation viscosity solutions Dirac concentrations stationary solutions
2012/4/23
A Hamilton-Jacobi formulation has been established previously for phenotypical structured population models where the solution concentrates as Dirac masses in the limit of small diffusion. Is it possi...
Using Kepler transit observations to measure stellar spot belt migration rates
Activity Spots Planetary Systems Planet Satellites Sunspots
2012/2/23
Planetary transits provide a unique opportunity to investigate the surface distributions of star spots. Our aim is to determine if, with continuous observation (such as the data that will be provided ...
Two phase, inward-then-outward migration of Jupiter and Saturn in the gaseous Solar Nebula
accretion, accretion disks – planets and satellites: formation – hydrodynamics – methods: numerical
2011/10/20
It has recently been shown that the terrestrial planets and asteroid belt can be reproduced if the giant planets underwent an inward-then-outward migration (the "Grand Tack"; Walsh et al 2011). Inward...
Migration mechanisms of gold nanoparticles explored in geogas of the Hetai ore district, southern China
geogas gold concelead ores gas migration
2017/4/12
Several studies have shown that gas flows (namely “geogas”) ascending from the Earth’s interior can, while passing
through concelead orebodies, assimilate ore nanoparticles and carry them to the surf...