摘要:
Amino acid-based poly(ester urea)s (PEU) are emerging as a class of polymers that have shown promise in regenerative medicine applications. Embodiments of the invention relate to the synthesis of PEUs carrying pendent “clickable” groups on modified tyrosine amino acids. The pendent species include alkyne, azide, alkene, tyrosine-phenol, and ketone groups. PEUs with Mw exceeding 100k Da were obtained via interfacial polycondensation methods and the concentration of pendent groups was varied by copolymerization. The incorporation of derivatizable functionalities is demonstrated using 1H NMR and UV-Vis spectroscopy methods. Electrospinning was used to fabricate PEU nanofibers with a diameters ranging from 350 nm to 500 nm. The nanofiber matricies possess mechanical strengths suitable for tissue engineering (Young's modulus: 300±45 MPa; tensile stress: 8.5±1.2 MPa). A series of bioactive peptides and fluorescent molecules were conjugated to the surface of the nanofibers following electrospinning using bio-orthogonal reactions in aqueous media.
摘要:
The present invention relates to a lamp having synthetic ceramic glass electrodes, which comprises a glass tube, a plurality of synthetic ceramic glass electrodes, and a plurality of connecting members. The plurality of connecting members are disposed between the glass tube and the plurality of synthetic ceramic glass electrodes. The plurality of connecting members have different thermal expansion coefficients. Thereby, by using the plurality of connecting members to connect the plurality of synthetic ceramic glass electrodes, the glass tube and the plurality of synthetic ceramic glass electrodes can be sealed tightly.
摘要:
An apparatus of storage medium for interface both USB host and USB OTG device is provided, including a USB module, a micro USB module, a control module, a storage module, where the control module is connected to the USB module, the micro USB module and the storage module, and provides signals to determine and control the data flow among the above modules. The apparatus can be connected to a USB host via the USB module and/or a USB OTG device via the micro USB module to access data in the storage module. The storage module can be realized as, for example, a pendrive module, a memory card reader with memory card, or a pendrive module plus a memory card reader with memory card. When connected to both a USB host and a USB OTG device simultaneously, the apparatus of the present invention can function as a USB cable.
摘要:
The present invention provides a ceramic-glass composite electrode and a fluorescent lamp having the same. The ceramic-glass composite electrode according to the present invention is a ceramic-glass composite, which is disposed at the ends of a glass tube of the fluorescent lamp. A stopper is disposed at the end of the glass tube for pushing against the ceramic-glass composite electrode and limiting the position of the ceramic-glass composite electrode slipped on the glass tube. Thereby, flowing of adhesives into the glass tube is avoided when the adhesives are used for gluing the glass tube and the ceramic-glass composite electrode, and hence extending the lifetime of the fluorescent lamp.
摘要:
The present invention discloses a method, a terminal, a device, and a system for obtaining ID information of an application service to solve the problem of the prior art that a terminal cannot automatically obtain the ID information of a target application service. In the invention, a first device sends an ID request to a second device, and the second device returns the ID information of the target application service to the first device. By the technical solution of the invention, a terminal which acts as the first device may automatically obtain the ID information of the target application service, and the user experience satisfaction is improved.
摘要:
An apparatus for automatically detecting and differentiating between a USB host and a USB device is provided. In a device with a USB interface, the present invention is coupled with the VBUS pin of the USB interface of the device. By monitoring the voltage change on the VBUS pin, the present invention determines whether the external device connected through the USB interface is a USB host or a USB device. The apparatus for automatically detecting and differentiating between a USB host and a USB device of the present invention includes a voltage detection circuit and a voltage detector. The voltage detection circuit is coupled with the voltage detector and the VBUS pin of the USB interface. The voltage detection circuit can be a voltage splitter. The voltage of voltage detection circuit can be changed according to the voltage signal inputted externally from the VBUS pin of the USB interface. The voltage detector is used to detect the voltage change of node A of voltage detection circuit to determine whether the external device connected through the USB interface is a USB host or a USB device.
摘要:
The present invention provides a SATA cable with light display feature, which is mainly used for the SATA cables for computer host and their peripheral devices. With the light display capability, the connection readiness status and the signal transmission conditions can be easily detected via the pins on the SATA cable. The realization technique used by the present invention is adding the LED lights and the control pins inlayed at the two plug-in ends of the SATA cable. When the two plug-in ends of the SATA cable are both connected and ready, or there is data transmission going on, the control pins automatically turn on the LED lights to indicate the ON/ACTIVE connection status/condition.
摘要:
A method of forming a silicon dioxide gate insulator layer on the surface of a native oxide free semiconductor substrate, has been developed. After performing wet clean procedures used to remove organic contaminants, as well as inorganic contaminants from a semiconductor substrate, a first native oxide layer formed on the surface of the semiconductor substrate as a result of the wet clean procedures is removed via a hydrofluoric acid solution. The hydrofluoric acid procedure results in fluoride ions now located on the surface of the semiconductor substrate. Insertion of the semiconductor substrate into an anneal—oxidation chamber results in a second native oxide formed on the surface of the semiconductor substrate, with the thickness of the second native oxide limited by the presence of the fluoride ions on the surface of the semiconductor substrate. An anneal procedure performed at a temperature greater than 1000° C., results in removal of the second native oxide as well as removal of the fluoride ions. A thermal oxidation procedure is performed in situ, in the anneal—oxidation chamber, resulting in the growth of a silicon dioxide gate insulator layer on the native oxide free surface of the semiconductor substrate.
摘要:
Disclosed is an interactive doll structure including a head portion, a body portion and a host. The head portion has at least a moving mechanism and at least a reader. The body portion is connected to the head portion and has at least another moving mechanism and at least another reader. The host is electrically connected to the moving mechanisms of the head portion and the body portion for controlling the movement of the moving mechanisms, and also electrically connected to the readers of the head portion and the body portion for controlling the head portion and/or the body portion to generate a corresponding operating mode when at least one of the readers reads an identifying tag from the outside.
摘要:
A multi-phase clock generator including a first delay locked loop, a reference signal generator and a second delay locked loop is provided. The first delay locked loop generates 2N phase clock signals according to an input clock signal, so as to equally divide a clock period of the input clock signal into 2N predetermined phases, where N is a positive integer. The reference signal generator selects two phase clock signals according to a digital signal, and adjusts an output ratio of the two phase clock signals in 2M clock periods to serve as a reference clock signal. The second delay locked loop delays a first phase clock signal according to a phase difference between the reference clock signal and an output clock signal. In this way, each predetermined phase is further equally divided into 2M sub-phases, so that the multi-phase clock generator has 2(N+M) phase selections.