搜索结果: 16-30 共查到“理学 methane”相关记录125条 . 查询时间(0.126 秒)
Mud volcanoes and microseepage: the forgotten geophysical components of atmospheric methane budget
methane lithosphere degassing mudvolcanoes greenhouse gas geodynamics
2015/9/10
Mud volcanoes and microseepage are two important natural sources of atmospheric methane, controlled by neotectonics
and seismicity. Petroleum and gas reservoirs are the deep sources, and faults and f...
Carbon dioxide and methane emissions from calcareous-marly rock under stress: experimental tests results
gas geochemistry earthquake precursors greenhouse gases
2015/9/10
The identified emissions of abiogenic carbon dioxide, carbon monoxide and methane are generally attributed to
volcanic activity or to geochemical processes associated with thermometamorphic effects. ...
Mud volcanoes and methane seeps in Romania: main features and gas flux
methane mud volcanoes Romania
2015/9/2
Romania is one of the European countries with the most vigorous natural seepage of methane, uprising from
pressurised natural gas and petroleum reservoirs through deep faults. The largest seepage zon...
Large Submarine Landslides on Continental Slopes: Geohazards, Methane Release, and Climate Change
Geohazards Methane Release Climate Change
2015/7/17
Submarine landslides on open continental slopes can be prodigious in scale. They are an important process for global sediment fluxes, and can generate very damaging tsunamis. Submarine landslides are ...
Methane-eating microorganisms help regulate emissions from wetlands
Methane-eating microorganisms regulate emissions wetlands
2015/7/13
Though they occupy a small fraction of Earth's surface, freshwater wetlands are the largest natural source of methane emitted into the atmosphere. New research identifies an unexpected process that ac...
New study: Iceberg influx into Atlantic during ice age raised tropical methane emissions
Iceberg influx into Atlantic ice age tropical methane emissions
2015/6/18
A new study shows how huge influxes of fresh water into the North Atlantic Ocean from icebergs calving off North America during the last ice age had an unexpected effect – they increased the productio...
Uncertainties in estimating regional methane emissions from rice paddies due to data scarcity in the modeling approach
estimating regional methane emissions rice paddies
2014/12/18
Rice paddies are a major anthropogenic source
of the atmospheric methane. However, because of the high
spatial heterogeneity, making accurate estimations of the
methane emission from rice paddies i...
Modelling methane emissions from natural wetlands by development and application of the TRIPLEX-GHG model
development and application Modelling methane emissions
2014/12/18
A new process-based model TRIPLEX-GHG was
developed based on the Integrated Biosphere Simulator
(IBIS), coupled with a new methane (CH4) biogeochemistry
module (incorporating CH4 production, oxidat...
Present state of global wetland extent and wetland methane modelling: methodology of a model inter-comparison project (WETCHIMP)
global wetland extent wetland methane modelling model inter-comparison project
2014/12/12
The Wetland and Wetland CH4 Intercomparison of Models Project (WETCHIMP) was created to evaluate our present ability to simulate large-scale wetland characteristics and corresponding methane (CH4) emi...
Exploring Isotopic Signatures of Lake El'gygytgyn Sediments for Evidence of Anoxia and Methane Cycling over the Past 50,000 Years
Exploring Isotopic Signatures Lake El'gygytgyn Sediments Evidence of Anoxia and Methane Cycling over the Past 50,000 Years
2014/10/21
Compound specific isotope analysis of lake sediments is a powerful tool in deciphering evidence of changing climatic and paleoenvironmental conditions through time. Isotopic analysis of Lake El’gygytg...
Effect of Lactobacillus mucosae on In vitro Rumen Fermentation Characteristics of Dried Brewers Grain, Methane Production and Bacterial Diversity
Brewers Grain Culture Supernatant In vitro Rumen Fermentation Lactobacillus mucosae
2016/5/17
The effects of Lactobacillus mucosae (L. mucosae), a potential direct fed microbial previously isolated from the rumen of Korean native goat, on the rumen fermentation profile of brewers grain were ev...
Meta-analysis on Methane Mitigating Properties of Saponin-rich Sources in the Rumen: Influence of Addition Levels and Plant Sources
Saponin Methane Rumen Emission Fermentation
2016/5/17
Saponins have been considered as promising natural substances for mitigating methane emissions from ruminants. However, studies reported that addition of saponin-rich sources often arrived at contrast...
Carbon isotope variations in diploptene for methane hydrate dissociation during the last glacial episode in the Japan Sea/East Sea
diploptene methane hydrate dissociation carbon isotope glacial–interglacial sea-level changes
2017/4/11
Two piston cores (06GHSA P1 and 06GHSA P6) taken from the Ulleung Basin of the Japan Sea/East Sea were examined
for the presence of an organic compound, diploptene (hopanoid 17α(H),21β(H)-hop-22(29)-...
Substance in photosynthesis was at work in ancient, methane-producing microbes（图）
ancient Substance in photosynthesis methane-producing microbes
2014/3/21
An international team of researchers, led by scientists at Virginia Tech and the University of California, Berkeley, has discovered that a process that turns on photosynthesis in plants likely develop...
In vitro Fermentation, Digestion Kinetics and Methane Production of Oilseed Press Cakes from Biodiesel Production
Oilseed Press Cake Ruminal Fermentation Supplementation
2016/5/12
Following the extraction of oil for biodiesel production, oilseed press cakes are high in fat. As the dietary supplementation of fat is currently considered the most promising strategy of consistently...