Camellia oleifera fruits picking period is affected by environmental factors, different regions have different weather, climate, temperature, soil fertility and other conditions, resulting in early and late maturity of Camellia oleifera fruits, so the picking time of oil tea fruit should be based on its specific. Mature degree depends. The last month before harvesting is the peak period of oil accumulation, during which the oil content of the fruit increases most significantly, accompanied by the mutual transformation of internal nutrients. However, during this period, the external morphological characteristics of the fruit, such as shape and size, fresh fruit quality and color, tend to be stable and do not change significantly, which makes it difficult for tea farmers to determine the maturity of the fruit and the optimal harvesting period. Therefore, there is an urgent need to propose a rapid and accurate method to detect the maturity of Camellia oleifera fruits, which can help in the accurate harvesting operation of Camellia oleifera fruits.
The application of GS spectroscopy can provide technical support for rapid monitoring and contamination evaluation of soil heavy metal content in agricultural fields on a large scale, and provide technical and theoretical support for further application of airborne or satellite-based hyperspectral remote sensing for quantitative monitoring of soil heavy metal contamination. There are still many objective factors that have yet to be resolved in the field monitoring of soil heavy metal content. When acquiring GS spectral data, the influence of meteorological conditions such as wind size, solar altitude angle, cloud limit or the particle size of the soil itself, the flatness of the soil surface, moisture content, etc. can affect the acquisition of spectral data
Fuel combustion is a transient chemical reaction kinetic process. Scientists use traditional photoelectric technology, combined with laser technology, spectroscopy technology, and image processing technology to analyse the temperature, composition and other parameters of the combustion field, and optimize the spray combustion of the engine. It is of great significance to improve combustion efficiency and reduce pollutants.
Raman Spectroscopy has been widely used in analyze solid and liquid phase sample, but not so much in gas phase sample . Main problem is, normally, the gas phase molecular under the laser illumination is too much less than the same laser illuminate the liquid or solid phase sample. So that, in generally, the Raman signal scattered from the gas phase sample will be too weak to be detected.