搜索结果: 1-12 共查到“理学 Tanzania”相关记录12条 . 查询时间(0.078 秒)
Fossil discovery in Tanzania reveals ancient bobcat-sized carnivore（图）
Tanzania ancient bobcat-sized carnivore
2017/10/25
Paleontologists working in Tanzania have identified a new species of hyaenodont, a type of extinct meat-eating mammal. The study is published today, National Fossil Day, in the journal PLOS ONE and fu...
Paleontologists discover new species of sauropod dinosaur in Tanzania（图）
paleontologists sauropod dinosaur tanzania
2017/9/5
Paleontologists have identified a new species of titanosaurian dinosaur. The research is reported in a paper published this week in the Journal of Vertebrate Paleontology and is funded by the National...
Effects of Land Use on Plague (Yersinia pestis) Activity in Rodents in Tanzania
Tanzania Activity in Rodents
2015/11/13
Understanding the effects of land-use change on zoonotic disease risk is a pressing global health concern. Here,
we compare prevalence of Yersinia pestis, the etiologic agent of plague, in rodents ac...
Paleontologists discover new species of titanosaurian dinosaur in Tanzania（图）
paleontology Tanzania
2014/9/12
For video b-roll associated with this discovery, please contact Dena Headlee at dheadlee@nsf.gov.Palontologists have identified a new species of titanosaurian, a member of the large-bodied sauropods t...
Climate Change Impacts, Local Knowledge and Coping Strategies in the Great Ruaha River Catchment Area, Tanzania
Climate Change Local Knowledge Coping Strategies Great Ruaha River Catchment Tanzania
2013/3/8
Climate change has profound implications for managing freshwater resources and species dependent on those resources. Water is an essential component of the life support system of the earth, and a basi...
Modeling the Effects of Rainfall Variability on Groundwater Recharge in Semi-Arid Tanzania
Rainfall Variability Groundwater Recharge Semi-Arid Tanzania
2009/10/26
A conceptual model of the effects of rainfall variability on groundwater recharge
was developed and applied to a small forested catchment in semi-arid Tanzania.
The model simulated dual-domain recha...
LAND USE AND PHYSICAL HYDROLOGY OF THE SOUTH NJOMBE CATCHMENT, SOUTHERN HIGHLANDS OF TANZANIA
LAND USE TANZANIA PHYSICAL HYDROLOGY
2009/10/19
This study examines the effect of changes in land use and vegetation cover on water yield from the Ruhudji catchment in southern Njombe. An evaluation was also made to assess the effect of afforestrat...
Importance of intertidal sediment processes and porewater exchange on the water column biogeochemistry in a pristine mangrove creek (Ras Dege, Tanzania)
intertidal sediment processes porewater exchange water column biogeochemistry
2010/1/14
We sampled a tidal creek (Ras Dege, Tanzania) during a 24-h cycle to document the variations in a suite of creek water column characteristics and to determine the relative influence of tidal and biolo...
Magnesium-Rich Clays of the Meerschaum Mines in the Amboseli Basin, Tanzania and Kenya
Kerolite Meerschaum Mixed-layered kerolite/stevensite Oxygen isotope composition Sepiolite Stevensite
2011/12/28
The Sinya Beds of the Amboseli Basin in Tanzania and Kenya consist largely of carbonate rocks and Mg-rich clays that are intensely deformed where exposed in and near former meerschaum mines. The carbo...
Curved Smectite in Soils from Volcanic Ash in Kenya and Tanzania: A Low-Angle X-ray Powder Diffraction Study
Curved layers Kaolinite Low-angle X-ray powder diffraction Smectite Soil clay Relative humidity Volcanic ash
2012/1/13
Low-angle X-ray powder diffraction (XRD) measurements of soil samples, made at controlled relative humidities, showed the presence of major reflections at 20–33, 10–27, and 7–8 Å. The first refl...
Surface Properties of Sepiolite from Amboseli, Tanzania, and Its Catalytic Activity for Ethanol Decomposition
Adsorption Catalysis Ethanol Pore size Sepiolite Surface area
2012/2/7
The catalytic activity of sepiolite from Amboseli, Tanzania, for the dehydration and dehydrogenation of ethanol at 150°–300°C has been studied using a flow reactor. Both reactions occur, but the catal...
SURFACE PROPERTIES OF SEPIOLITE FROM AMBOSELI,TANZANIA, AND ITS CATALYTIC ACTIVITY FOR ETHANOL DECOMPOSITION
Adsorption Catalysis Ethanol Pore size Sepiolite Surface area
2011/11/16
The catalytic activity of sepiolite from Amboseli, Tanzania, for the dehydration and dehydrogenation of ethanol at 150~176 has been studied using a flow reactor. Both reactions occur, but the catalyst...