搜索结果: 46-60 共查到“理学 CO”相关记录781条 . 查询时间(0.117 秒)
杂原子介孔Co-MCM-41分子筛的制备及其吸附脱氮性能
Co-MCM-4 合成 表征 脱氮
2015/7/30
采用水热法合成了介孔MCM-41和Co-MCM-41分子筛,并利用XRD、FT-IR、低温N2吸附-脱附和NH3-TPD等方法对合成的分子筛进行了表征。考察了晶化时间、晶化温度、陈化时间对合成介孔Co-MCM-41分子筛的影响,确定较适宜的合成条件为陈化时间1 h,晶化温度110 ℃,晶化时间2 d。XRD 和FT-IR表征结果说明,Co原子已经进入MCM-41的骨架。MCM-41和Co-MCM-...
Activity time budget patterns of sheep and goats co-grazing on semi-natural species-rich dry grassland
animal behaviour activity pattern small ruminant mixed pasture semi-natural grassland
2015/6/24
Activity time budget patterns and grazing response to sward and environmental conditions were investigated for paddocks of sheep and goats co-grazing for conservation purposes on a semi-natural specie...
Genetic Study of ‘Co-Evolution’Could Provide Clues to Better Food Production
Genetic Study Co-Evolution Provide Clues Better Food Production
2015/7/13
In 1964, renowned biologists Peter Raven and Paul Erhlich published a landmark study that introduced the concept of co-evolution. Using butterflies and plants as primary examples, the team deter...
利用16S rDNA基因及线粒体DNA细胞色素氧化酶亚基Ⅰ（cytochrome oxidase subunit I gene，COⅠ）基因建立3种形态学特征相近的血蜱属蜱类-长角血蜱、褐黄血蜱及铃头血蜱的分子生物学鉴定方法，探讨它们的系统发生关系。 方法 在上海市动物体表采集寄生蜱，在解剖显微镜下进行形态学鉴定后，提取蜱样本基因组DNA，采用PCR方法从蜱基因组中扩增16S rDNA及COⅠ基因...
Site Characteristics and Plant Invasion: Light Limitation of Invasive Establishment and Impacts of Elaeagnus Umbellata on Soil Nitrogen Availability and Co-occurring Species
soil nitrogen invasion facilitation
2015/1/6
Invasive species have become an increasing threat to many habitats worldwide. This research addressed the questions of whether several invasive woody plants can germinate, survive and grow in light le...
CO luminosity functions for far-infrared- and B-band-selected galaxies and the first estimate for Omega(H I+H2)
surveys molecules
2014/12/24
We derive a nonparametric CO luminosity function using an FIR- and an optical B-band-selected sample of the galaxies included in the FCRAO Extragalactic CO Survey. The FIR-selected sample is defined u...
A Study of CO Emission in High-Redshift QSOs Using the Owens Valley Millimeter Array
SMM J04135+10277 VCV J140955.5+562827
2014/12/24
Searches for CO emission in high-redshift objects have traditionally suffered from the accuracy of optically derived redshifts for lack of bandwidth in correlators at radio observatories. This problem...
CO(1-0) in z gtrsim 4 Quasar Host Galaxies: No Evidence for Extended Molecular Gas Reservoirs
formation high-redshift
2014/12/24
We present 12CO(J = 1 → 0) observations of the high-redshift quasi-stellar objects (QSOs) BR 1202-0725 (z = 4.69), PSS J2322+1944 (z = 4.12), and APM 08279+5255 (z = 3.91) using the NRAO Green Bank Te...
The Five College Radio Astronomy Observatory CO mapping survey of the Taurus molecular cloud
clouds general
2014/12/23
The FCRAO Survey of the Taurus molecular cloud observed the 12CO and 13CO J = 1–0 emission from 98 deg2 of this important, nearby, star-forming region. This set of data with 45'' resolution comprises ...
LUMINOUS INFRARED GALAXIES WITH THE SUBMILLIMETER ARRAY. II. COMPARING THE CO (3-2) SIZES AND LUMINOSITIES OF LOCAL AND HIGH-REDSHIFT LUMINOUS INFRARED GALAXIES
starburst observations,
2014/12/22
We present a detailed comparison of the CO (3-2) emitting molecular gas between a local sample of luminous infrared galaxies (U/LIRGs) and a high-redshift sample that comprises submm selected galaxies...
(CO)-C-12(J=1-0) ON-THE-FLY MAPPING SURVEY OF THE VIRGO CLUSTER SPIRALS. I. DATA AND ATLAS
atlases galaxies
2014/12/22
We have performed an On-The-Fly (OTF) mapping survey of 12CO(J = 1-0) emission in 28 Virgo cluster spiral galaxies using the Five College Radio Astronomy Observatory (FCRAO) 14 m telescope. This surve...
New Panoramic View of $^{12}$CO and 1.1 mm Continuum Emission in the Orion A Giant Molecular Cloud. I. Survey Overview and Possible External Triggers of Star Formation
star formation
2014/12/22
We present new, wide, and deep images in the 1.1 mm continuum and the CO ( 1–0) emission toward the northern part of the Orion A Giant Molecular Cloud (Orion-A GMC). The 1.1 mm data were taken with th...
The JCMT Nearby Galaxies Legacy Survey – V. The CO(J= 3–2) distribution and molecular outflow in NGC 4631
galaxy star
2014/12/20
We have made the first map of CO(J= 3–2) emission covering the disc of the edge-on galaxy, NGC 4631, which is known for its spectacular gaseous halo. The strongest emission, which we model with a Gaus...
Investigations of glycoprotein co-translational maturation in the cell
New protein Protein Endoplasmic reticulum cavity Protein folding Coupling molecules Fold the sensor Membrane glycoprotein
2014/12/11
The earliest steps of nascent protein folding are critical to the overall folding efficiency. Folding events start as soon as the protein is translocated into the endoplasmic reticulum lumen, where th...
WC1 Functions as a Co-Receptor and A Pattern Recognition Receptor In Bovine Gamma delta T Cells
Health and environmental sciences Endocytosis Gamma delta t cells Receptor-ligand interactions Wc1 Pattern recognition receptors
2014/12/10
WC1 proteins specifically expressed on the surface of γδ T cells are members of group B Scavenger Receptor Cysteine Rich (SRCR) superfamily, in which receptors contain several SRCR domains in the extr...