摘要:
New camptothecin derivatives with the following structure of the formula (I), their use and the pharmaceutical compositions containing the same. The compounds of the present invention have good anti-tumor activities and good solubility in water, and can be used in development of medicines.
摘要:
New camptothecin derivatives with the following structure of the formula (I), their use and the pharmaceutical compositions containing the same. The compounds of the present invention have good anti-tumor activities and good solubility in water, and can be used in development of medicines.
摘要:
This invention provides a process or fabrication method of forming broadband anti-reflective (AR) coating over the mid-IR fluoride fiber for high power laser applications in mid-IR wavelength range. The AR coating consists of multiple-pair Lithium fluoride (LiF) and Al2O3, and was deposited by electron beam physical vapor deposition with an iron assistant source at low temperature (
摘要:
A memory processing unit architecture can include a plurality of memory regions and a plurality of processing regions interleaved between the plurality of memory regions. The plurality of processing regions can be configured to perform computation functions of a model such as an artificial neural network. Data can be transferred between the computation functions in respective memory processing regions. In addition, the memory regions can be utilized to transfer data between a computation function in one processing region and a computation function in another processing region adjacent to the given memory region.
摘要:
An advanced mobile terminal converges multiple wireless transmission technologies through utilizing a cost-effective and spectrum-efficient mobile cloud solution by introducing Virtual Mobile Server (VMS), Virtual Register and Call Switch (VR/CS) and OWA Community systems and methods based on the innovative open wireless architecture (OWA) technology platform, and the mobile terminal is able to seamlessly roam in the local community without relying on traditional cellular mobile networks for the integrated smart home, smart office and smart community platform of the smart community mobility solutions among home, neighbors and local communities.
摘要:
Non-crystalline silicon non-volatile resistive switching devices include a metal electrode, a non-crystalline silicon layer and a planar doped silicon electrode. An electrical signal applied to the metal electrode drives metal ions from the metal electrode into the non-crystalline silicon layer to form a conducting filament from the metal electrode to the planar doped silicon electrode to alter a resistance of the non-crystalline silicon layer. Another electrical signal applied to the metal electrode removes at least some of the metal ions forming the conducting filament from the non-crystalline silicon layer to further alter the resistance of the non-crystalline silicon layer.
摘要:
A method for authenticating the identity of a handset user in a cloud-computing environment is provided. The method includes: obtaining, a login account and a password from the user; judging whether the login account and the password are correct; if the login account or the password is incorrect, refusing the user to access an operating system of the handset; if the login account and the password are correct, sending the login account and the password to a cloud server, wherein the login account and the password correspond to a face sample image library of the user stored on the cloud server; acquiring an input face image of the user; sending the input face image to the cloud server; authenticating, by the cloud server, the identity of the user according to the login account, the password and the input face image.
摘要:
The present invention provides methods of preparing functionalized graphene nanoribbons. Such methods include: (1) exposing a plurality of carbon nanotubes (CNTs) to an alkali metal source in the presence of an aprotic solvent to open them; and (2) exposing the opened CNTs to an electrophile to form functionalized graphene nanoribbons (GNRs). The methods may also include a step of exposing the opened CNTs to a protic solvent to quench any reactive species on them. Additional methods include preparing unfunctionalized GNRs by: (1) exposing a plurality of CNTs to an alkali metal source in the presence of an aprotic solvent to open them; and (2) exposing the opened CNTs to a protic solvent to form unfunctionalized GNRs.
摘要:
A method is provided for optimizing a contrast injection function for CT imaging. The method includes injecting, with an injector pump, a test bolus of a contrast agent into a subject. The method also includes computing, on a processor, an impulse enhancement function. The method also includes determining, on a processor, a target enhancement function for a region of interest. The method also includes determining, with a processor, a plurality of parameters for a functional form for a contrast injection function in a time domain. The method also includes determining for the contrast injection function a constraint. The method also includes determining, with a processor, particular values for the plurality of parameters, which satisfy the constraint and minimize a difference between a value of an enhancement function and the target enhancement function computed in the time domain at discrete time periods without use of a Fourier transform.
摘要:
A cache logically disposed in a communication path between a client and a server receives a request for a content item and, in response thereto, requests from the server header information concerning the content item and an initial portion of data that makes up the content item. The cache then computes a first hashing value from the header information and a second hashing value from the initial portion of data. A content identifier is created by combining the first hashing value and the second hashing value. Using the content identifier, the cache determines whether a copy of the content item is stored by the cache; and, if so provides same to the client. Otherwise, the cache requests the content item from the server and, upon receipt thereof, provides it to the client.