搜索结果: 1-15 共查到“地质学 Variation”相关记录23条 . 查询时间(0.031 秒)
Seasonal variation of isoprene basal emission in mature Quercus crispula trees under experimental warming of roots and branches
isoprene biogenic volatile emission Quercus crispula experimental warming
2017/4/11
Isoprene is a reactive volatile organic compound (VOC), the annual global biogenic emissions of which are the largest
of the non-methane VOC. Since isoprene emissions are partly temperature-driven, u...
Temporal variation of 134Cs and 137Cs activities in surface water at stations along the coastline near the Fukushima Dai-ichi Nuclear Power Plant accident site, Japan
radiocaesium ocean coast Fukushima geochemistry
2017/4/11
We present our April to December 2011 observations of 134Cs and 137Cs activities in surface water at Hasaki, a coastal
station 180 km south of the Fukushima Dai-ichi Nuclear Power Plant (FNPP1) accid...
Variation in Ecosystem Services Value in a Typical Mountain Town, Liaohe Watershed, China
Ecosystem Service Value Land Use Change Nanfen District RS & GIS Value Coefficients
2011/12/21
This study investigated variation in ecosystem services value in response to land use change in Nanfen District of Benxi City, a typical mountain town in Liaohe watershed, China. We used two Landsat T...
Seasonal variation of radon concentrations in atmospheric air in the Nowa Ruda area (Sudety Mountains) of southwest Poland
utdoor radon seasonal and spatial variations
2017/4/12
Atmospheric radon concentrations were monitored from autumn 2004 to winter 2007 in an abandoned coal mining
area of SW Poland that contained various bedrock uranium contents, ranging from 1 to 8 ppm....
Determination of natural isotopic variation in antimony using inductively coupled plasma mass spectrometry for an uncertainty estimation of the standard atomic weight of antimony
Sb isotope ratios multiple collector ICP-MS element doping technique
2017/4/12
The isotopic variation of industrially produced antimony was estimated using multiple-collector inductively coupled
plasma mass spectrometry. A reproducible 123Sb/121Sb ratio of ±0.004% (2 standard d...
Method of Soil Erosion Intensity Spatial Variation Research
Gas Insulation Switchgear (GIS) Luoning County RS Soil Erosion Intensity
2011/12/21
This paper collected attribute data of impacting soil erosion factors by RS and GIS, combined soil erosion model, got load and density of soil erosion in Luoning county, Henan province, and analyzed r...
Helium in old porcelain: The historical variation of the He isotopic composition in air
helium isotopes atmosphere porcelain anthropogenic fluxes Industrial Revolution
2017/8/9
It is still debated whether there is a variation of the atmospheric 3He/4He ratio, due to the anthropogenic release of radiogenic 4He contained in fossil fuels, in modern era. In this study, we measur...
Intraspecific variation in Wenlock tabulate corals from Saaremaa (Estonia) and its taxonomic implications
Wenlock Baltoscandia tabulates intraspecific variation
2009/10/21
Different aspects of intraspecific variation in Wenlock tabulate corals are discussed. Intracorallum and intraspecific variation is demonstrated in specimens within the collection from one locality. T...
Morphological variation of the tabulate coral Paleofavosites cf. collatatus Klaamann,1961 from the Silurian of the Bagovichka River localities,Podolia(Ukraine)
Silurian Ludlow Podolia Tabulata morphological variation
2009/10/21
Paleofavosites cf. collatatus Klaamann occurs abundantly in marls and bioherms of the Muksha Member of the Bagovitsa Formation (Upper Silurian, Ludlow). The morphological variation of this species ide...
Variation of the synarcual in the California Ray,Raja inornata (Elasmobranchii:Rajidae)
Fused anterior vertebrae Computed tomography
2009/10/20
Seven juvenile specimens of Raja inornata were CT scanned and digitally modeled to examine the variation of synarcual morphology with changing size. The synarcual is a highly variable skeletal element...
Nitrogen and N-isotope variation during low-grade metamorphism of the Taiwan mountain belt
nitrogen isotope devolatilization subduction zone Taiwan
2017/8/9
To investigate factors affecting the evolution of nitrogen system in rocks during progressive metamorphism, unmetamorphosed to greenschist-facies pelitic samples were collected from both pelitic and (...
High sensitivity measurements of nitrogen isotopic ratios in coral skeletons from Palau, western Pacific: Temporal resolution and seasonal variation of nitrogen sources
coral skeleton δ15N value δ18O value δ13C value seasonal variation
2017/8/10
By using a step-wise heating method in conjunction with static vacuum mass spectrometry, we have measured at high temporal resolution (one month) the nitrogen isotopic ratio of a coral skeletal sample...
Temporal variation in chemical composition of the volcanic plume from Aso volcano, Japan, measured by remote FT-IR spectroscopy
volcanic gas hydrothermal interaction crater lake remote FT-IR spectroscopy Aso volcano
2017/8/10
Remote measurements of chemical compositions of the Aso volcanic plume using an FT-IR spectral radiometer were carried out at the 1st crater of Mt. Nakadake, Aso volcano, Japan, for six times from 199...
The description of Al, Si ordering in aluminosilicates using the cluster variation method
cluster variatio nmethod Al Si cluster variation method
2012/3/30
Theclustervariationmethod(CVM)fordeterminingthethermodynamicsofbothshort-
rangeandlong-rangeorderinthisstudywasextendedtocomplexaluminosilicateminerals.
Usingrecentlydevelopedalgorithmsforthemaximiz...
Compositional variation and structural state of columbite-tantalite in rare element granitic pegmatites of the Preissac-Lacorne batholith, Quebec, Canada
Compositional variation columbite-tantalite element granitic pegmatites Preissac-Lacorne batholith Quebec Canada
2012/4/5
Rare-element-enriched graniticpegmatitesin andnearthe LamotteandLacorneplutons ofthe ArcheanPreissac-Lacorne batholith (Quebec) arezoned from aleast fractionated beryltype in the parental pluton throu...