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.
As a part of trials to develop the antitumor agent from tannins, the antitumor activity of pedunculagin, an ellagitannin, isolated from eucalyptus leaves, was reported in this paper. In vitro, the antitumor activity was determined by MTT assay. Pedunculagin showed the dose-dependent antitumor activity against human liver tumor cells (QGY-7703), the 50% inhibition concentration (IC50) was (64.3±6.1)µg/mL,...
Based on TM remote sensing images in 1989, 2000 and 2008, combining with GIS technology, and the city of Beijing's land use change characteristics in the past 20 years from 2008 will be analyzed. The indicators such as single land use dynamics, land utilization classification index and land use transfer matrix will be used to reveal the changes on range, speed and direction of this study area. On...
Since the 21st century, artificial intelligence has deeply impacted the development process of every subject, such as Cybernetics, Information Theory, System Theory, Computer Science, physiology, etc., nearly involving any field and category in the human world in the theory and practice study. With the development of artificial intelligence, the internet has become a relatively new field. Today, with...
Learning and memory, which are important functions of the human brain, are the foundations of thinking. Revealing the learning and memory mechanism of human brain is the core objective and main development way of the intelligent science. Improved human brain functional structure model, a memory prediction structural framework on the brain structure and function are proposed. And then we work out a...
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.