The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
To ascertain flashover mechanism of the roof external insulation in high-speed airflow environment, breakdown characteristics and mechanisms of short needle-plate air gaps in high-speed airflow were investigated based on an artificial experimental wind-tunnel platform We obtained the breakdown characteristics of the air gaps in wind sand environment by studying the influences of sand mass concentration,...
The finite-difference method (FDM) algorithm with staggered grid greatly improved the computational efficiency of solving differential equations in two dimensional simulation of GPR, but the strict Courant-Friedrich-Levy (CFL) condition must be satisfied. In three dimensional simulation of GPR, a maximum time-step size will lead to a serious numerical dispersion, while a minimum time-step size will...
We will review our works on plasmon lasers and circuits. The scaling down of laser will experience ever-increasing radiation loss and stronger divergence. Plasmonics has emerged as one solution for these hurdles.
From a rare freshwater lake characteristic of alkalescence, named “Cattle Pond”, on the Dongdao Island of South China Sea (16°39′–16°41′ N, 112°43′–112°45′ E), we collected two undisturbed sediment cores that contain seabird droppings. In this paper, we determined the concentration-versus-depth profiles of the geochemical elements in the ornithogenic sediment layers of the two cores, analyzed these...
The samples were digested with a mixture of nitric acid and perchloric acid. Suitable amount of thiourea was added to reduce As(V) to As(III), and to minimize the interference from transition metal ions. Total arsenic was determined after transformation to arsine by the reaction with KBH4 solution. The interferences from Cu(II), Fe(IlI), Hg(II) and Se(IV) were studied and the mechanisms of interference...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.