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19.229  Articles
1 of 1.924 pages  |  10  records  |  more records»
The aerosol optical depth (AOD) from satellites or ground-based sun photometer spectral observations has been widely used to estimate ground-level PM2.5 concentrations by regression methods. The boundary layer height (BLH) is a popular factor in the regre... see more

Micro pulse lidar is a promising tool for retrieving the convective boundary layer height (CBLH), but its application has been hindered by sharp extinction of the signal in high humidity conditions, e.g., clouds. To remedy this, we developed an effective ... see more

Ethylene emissions are characteristic of primary exhalations of vehicular combustion processes. Their reac­tion with hydroxyl radicals in the presence of solar UV radiation promotes the production of ozone. Previ­ously, our research group reported the mea... see more

It is shown that at present an acceptable way of reducing the concentration of harmful substances in the surface layer of the atmosphere at rheostat tests of locomotives is their dispersion in a large volume of air. Channels, installed above an exhaust pi... see more

Air pollutants are dispersed throughout a very thin layer of the atmosphere called the boundary layer (BL), and concentrations would be influenced by the thickness of the BL. A monostatic, biaxial, vertically-pointing Mie Scattering 532 nm Nd: YAG lidar w... see more

Mixing layer height (MLH) is a crucial parameter for air quality modelling that is still not routinely measured. Common methods for MLH determination use atmospheric profiles recorded by radiosonde but this process suffers from coarse temporal resolution ... see more

Tingkat kekasaran permukaan (Surface Roughness) merupakan salah satu hal penting dalam menentukan kualitas sebuah objek dalam dunia manufaktur tidak terkecuali teknologi Additive Manufacturing. Teknologi Rapid Prototyping kini berkembang dengan pesat di d... see more

3D printing is a process of making three-dimensional solid objects from a digital file process created by laying down successive layers of material until the object is created. Many filaments can be used in 3D printing, one of which is PETG (PolyEthylene ... see more

The 3D printing technology is one of the technologies that is developing currently. This machine can make products easily, quickly, and precisely. 3D printing is used to print models, prototypes/modeling, teaching aids for education, health support device... see more

1 of 1.924 pages  |  10  records  |  more records»