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48 results about "Active domain" patented technology

Method and apparatus for detecting data collection omission in traffic collection device

The invention discloses a method for detecting data collection omission in a traffic collection device and relates to an information security technology in the technical field of information. The method comprises the following steps: step 1 is discovery of omission of active IP data, and step 2 is discovery of omission of active domain name data. According to the invention, a DNS data source is used to supplement original data, and data which has the attribute of a computer room is extracted, and then a simulation request is performed, such that the performance demand for the simulation request is reduced, a more comprehensive simulation request is also provided, and discovered omission is more comprehensive and accurate. When the simulation request is performed, an http (get/post) requestis firstly performed, and then afterwards, data whose simulation request result return values are not within a reasonable scope is subjected to an https (get/post) request. Such a mode, compared to amode of performing http&https simulation requests on all data, can reduce the performance demand for the simulation request, and compared to a mode of only performing the http simulation request, canalso enhance comprehensiveness of the simulation request. According to the invention, the network supervision level can be effectively improved, and data missed by an information security managementsystem is discovered for analysis of omission reasons of the information security management system.
Owner:BEIJING ACT TECH DEV CO LTD

UDP-galactose: β-N-acetyl-glucosamine β-1,4-galactosyltransferase, β4Gal-T2

InactiveUS6916649B2Animal cellsSugar derivativesUDP galactoseDNA construct
A novel gene defining a novel enzyme in the UDP-D-galactose: b-N-acetyl-glucosamine β-1,4-galactosyltransferase family, termed β4Gal-T2, with unique enzymatic properties is disclosed. The enzymatic activity of β4Gal-T2 is shown to be distinct from that of previously identified enzymes of this gene family. The invention discloses isolated DNA molecules and DNA constructs encoding β4Gal-T2 and derivatives thereof by way of amino acid deletion, substitution or insertion exhibiting β4Gal-T2 activity, as well as cloning and expression vectors including such DNA, cells transfected with the vectors, and recombinant methods for providing β4Gal-T2. The enzyme β4Gal-T2 and β4Gal-T2-active derivatives thereof are disclosed, in particular soluble derivatives comprising the catalytically active domain of β4Gal-T2. Further, the invention discloses methods of obtaining β-1,4-galactosyl glycosylated saccharides, glycopeptides or glycoproteins by use of an enzymically active β4Gal-T2 protein or fusion protein thereof or by using cells stably transfected with a vector including DNA encoding an enzymatically active β4Gal-T2 protein as an expression system for recombinant production of such glycopeptides or glycoproteins. Also a method for the identification of DNA sequence variations in the β4Gal-T2 gene by isolating DNA from a patient, amplifying β4Gal-T2-coding exons by PCR, and detecting the presence of DNA sequence variation, are disclosed.
Owner:GLYCOZYM

Method for calculating the number of Internet access websites based on active and passive data

The invention discloses a method for calculating the number of Internet access websites based on active and passive data. The method comprises the following steps: passively collecting report data information and IP address report information of national and provincial Internet websites, and obtaining domain name information and IP address distribution databases recorded by the national and provincial Internet websites; passively collecting active domain name information of the nation and provinces, and obtaining the active domain name information collected in the nation and the provinces; actively collecting website information corresponding to the domain names collected in the above two manners in a distributed manner, and obtaining a website connection state, a title, homepage static data and access IP address information; and based on the above three types of data, analyzing the number of national and provincial Internet websites through mathematical modeling. By adoption of the statistical method disclosed by the invention, the overall number of national Internet websites, the overall number of provincial Internet websites, the proportions and the overall change situations canbe reflected to a greater extent, so that the application prospect is better.
Owner:EVERSEC BEIJING TECH

UDP-galactose: beta-N-acetyl-glucosamine beta-1,4-galactosyltransferase, beta4Gal-T2

A novel gene defining a novel enzyme in the UDP-D-galactose: b-N-acetyl-glucosamine β-1,4-galactosyltransferase family, termed β4Gal-T2, with unique enzymatic properties is disclosed. The enzymatic activity of β4Gal-T2 is shown to be distinct from that of previously identified enzymes of this gene family. The invention discloses isolated DNA molecules and DNA constructs encoding β4Gal-T2 and derivatives thereof by way of amino acid deletion, substitution or insertion exhibiting β4Gal-T2 activity, as well as cloning and expression vectors including such DNA, cells transfected with the vectors, and recombinant methods for providing β4Gal-T2. The enzyme β4Gal-T2 and β4Gal-T2-active derivatives thereof are disclosed, in particular soluble derivatives comprising the catalytically active domain of β4Gal-T2. Further, the invention discloses methods of obtaining β-1,4-galactosyl glycosylated saccharides, glycopeptides or glycoproteins by use of an enzymically active β4Gal-T2 protein or fusion protein thereof or by using cells stably transfected with a vector including DNA encoding an enzymatically active β4Gal-T2 protein as an expression system for recombinant production of such glycopeptides or glycoproteins. Also a method for the identification of DNA sequence variations in the β4Gal-T2 gene by isolating DNA from a patient, amplifying β4Gal-T2-coding exons by PCR, and detecting the presence of DNA sequence variation, are disclosed.
Owner:GLYCOZYM
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