To perform the function of hearing, the ear converts the energy of pressure waves moving through the air into nerve impulses that the brain perceives as sound. Vibrating objects, such as the vocal cords of a speaking person, create waves in the surrounding air. These waves cause the eardrum...
IT was found several years ago in our experiments that small animals such as rats, pigeons, cats, guinea pigs, monkeys, etc., can live in a medium of air under control, but cannot live in pure oxygen under similar conditions, but will die within two to five days1.. 1933 Nature ...
These equations are essentially diagnostic when applied only to the atmosphere and the underlying surface layer. Despite the difficulties of parameterization, SDMs based on rather simple approximations can account for a good deal of the large-scale spatial variability of the climatic mean state of the...
Earth’s organic molecules likely came from some combination of three sources: chemical reactions in the atmosphere, chemical reactions near deep-sea vents in the oceans, and molecules carried to Earth by asteroids and comets. The first two sources can occur only on worlds with atmospheres or ...
Most gas turbines operate on an open cycle in which air is taken from the atmosphere, compressed in a centrifugal or axial-flow compressor, and then fed into a combustion chamber. Here, fuel is added and burned at an essentially constant pressure with a portion of the air. Additionalcompresse...
Organic aerosol (OA) is the dominant component of atmospheric fine particulate mass1. The majority of OA is secondary (SOA), formed in the atmosphere from the oxidation of precursor gases2. Most SOA are composed of oxygenated and hygroscopic compounds, thereby, have harmful impacts on respiratory...
In this paper, which reports on part of the BALTEX project, various components of the heat balance over the Baltic Sea are calculated using a number of gridded meteorological databases. It is the heat exchange between the Baltic Sea surface and the atmosphere that is of interest. The databases...
Earth's organic molecules likely came from some combination of three sources: chemical reactions in the atmosphere, chemical reactions near deep-sea vents in the oceans, and molecules carried to Earth by asteroids and comets. The first two sources can occur only on worlds with atmospheres or ...
The possibilities of detecting high energy neutrinos through inclined showers produced in the atmosphere are addressed with an emphasis on the detection of... Zas,Enrique - 《New Journal of Physics》 被引量: 77发表: 2005年 The cosmic ray primary composition in the “knee” region through the ...
The Role of Training in the Process of Establishment of a Total Quality System The reduction in mating of Ephestia cautella caused by permeation of the atmosphere with synthetic sex pheromone components was investigated in the labora... DDV Ignacio,MÁ Sastre Castillo - 《Contaduría Y Administra...