For many years, Li He, a researcher at the Institute of Geochemistry of the Chinese Academy of Sciences, has been working on this aspect and has made important progress. Under the guidance of Li Heping, the research team of the research team, Dai Lidong, Hu Haiying and other typical mineral rocks in the crust and upper mantle: rich in garnet (Alm82Py15Grs3), single crystal San Carlos olivine and granite, and lower mantle minerals : Calcium ferrite phase (NAL and CF of Na0.4Mg0.6Al1.6Si0.4O4), for example, in this laboratory, Department of Geology and Geophysics, Yale University, USA, and School of Earth and Planetary Sciences, Tokyo Institute of Technology, Japan In-situ measurement of conductivity and Brillouin scattering elastic wave velocity was carried out under the conditions of Japan SPring-8 and double-sided CO2 laser laser heating in the top press and diamond pressure chamber high temperature and high pressure equipment. Pressure, oxygen partial pressure and phase transition have important influence on the physical properties of minerals. This result can provide important experimental results and scientific basis for the establishment of profiles such as conductivity-depth and elastic wave-depth of deep earth materials.
The work was funded by the “135†project of the Institute of Geochemistry of the Chinese Academy of Sciences, the Class A Hundred Talents Program of the Chinese Academy of Sciences, and the National Natural Science Foundation of China. Some of the results were funded by the Japan Scholars Association Foreign Researcher Fund and the Natural Science Foundation of the United States.
Gully gratings are metal or plastic grates that are used to cover and protect gully openings in the ground. These openings are typically found along roadsides, sidewalks, or other areas where water runoff needs to be collected and directed to a drainage system.
Gully gratings are designed to allow water to flow through while preventing larger debris, such as leaves, trash, or rocks, from entering the drainage system. They are usually made from durable materials like cast iron or galvanized steel to withstand heavy loads and resist corrosion.
In addition to their functional purpose, gully gratings also provide a safety measure by preventing pedestrians or vehicles from accidentally falling into the gully. They are often designed with anti-slip surfaces or raised edges to enhance traction and prevent accidents.
Gully gratings come in various shapes and sizes to accommodate different gully openings and flow rates. They can be square, rectangular, or circular in shape, and may have different patterns or designs on their surface for aesthetic purposes.
Regular maintenance of gully gratings is important to ensure they remain clear of debris and allow for proper water flow. This may involve periodic cleaning or removal of any obstructions that may accumulate over time.
Overall, gully gratings play a crucial role in managing surface water runoff and preventing drainage system blockages. They provide both functional and safety benefits, making them an essential component of urban infrastructure.
Gully Gratings,Composite Gratings,Gully Grate With Frame,Frp Gully Grating
Zhoushan Runchun Import & Export Co., Ltd. , https://www.en124casting.com