Abstract: One aspect of the invention provides a three-dimensional scaffold including at least one layer of highly-aligned fibers. The at least one layer of highly-aligned fibers is curved in a direction substantially perpendicular to a general direction of the fibers. Another aspect of the invention provides a method for fabricating a three-dimensional scaffold. The method includes: electro spinning a plurality of fibers to produce at least one layer of highly-aligned fibers and forming the at least one layer of highly-aligned fibers into a three-dimensional scaffold without disturbing the alignment of the highly-aligned polymer fibers. A further aspect of the invention provides methods for using a three-dimensional scaffold to treat nerve or spinal cord injury.

Abstract: A method for determining a three-dimensional tortuosity of a loose and broken rock-soil mass, includes the following steps: a particle grading curve of the loose and broken rock-soil mass is obtained by utilizing a particle size analysis, and followed by calculating an equivalent particle size and an average particle size; a porosity of the loose and broken rock-soil mass is obtained by utilizing a moisture content test, a density test, and a specific gravity test; the three-dimensional tortuosity of the loose and broken rock-soil mass is obtained by utilizing the equivalent particle size, the average particle size and the porosity of the loose and broken rock-soil mass. The method has the advantages of simple logic, accuracy and reliability, simple and fast parameter determination, and has high practical value and promotion value in the field of environmental protection and ecological restoration technology.

Abstract: One aspect of the invention provides a three-dimensional scaffold including at least one layer of highly-aligned fibers. The at least one layer of highly-aligned fibers is curved in a direction substantially perpendicular to a general direction of the fibers. Another aspect of the invention provides a method for fabricating a three-dimensional scaffold. The method includes: electro spinning a plurality of fibers to produce at least one layer of highly-aligned fibers and forming the at least one layer of highly-aligned fibers into a three-dimensional scaffold without disturbing the alignment of the highly-aligned polymer fibers. A further aspect of the invention provides methods for using a three-dimensional scaffold to treat nerve or spinal cord injury.

Abstract: A heat dissipation simulator of a component on a printed circuit board (PCB) includes a simulation board and a simulated heat source. The simulation board includes an iron layer and a plastic layer. The simulated heat source includes a simulation chip, a thermal, and a heat sink. The simulation chip, the thermal piece, and the heat sink are mounted on the simulation board in that order. The heat dissipation simulator replaces a sample of the PCB with the component for simulating working states of the component on the PCB.

Abstract: A connector assembly includes a first connector, a second connector, a first holding member, and a second holding member pivotably connected to the first holding member. The first connector includes a first connecting portion, and a first cable and a blocking portion connected to opposite ends of the first connecting portion. The second connector includes a second connecting portion and a second cable connected to an end of the second connecting portion. A latching portion protrudes from the second cable adjacent to the second connecting portion. The first holding member is fitted about the first connecting portion and is blocked by the blocking portion. The second holding member is latched with the latching portion.

Abstract: A heat dissipation simulator of a component on a printed circuit board (PCB) includes a simulation board and a simulated heat source. The simulation board includes an iron layer and a plastic layer. The simulated heat source includes a simulation chip, a thermal, and a heat sink. The simulation chip, the thermal piece, and the heat sink are mounted on the simulation board in that order. The heat dissipation simulator replaces a sample of the PCB with the component for simulating working states of the component on the PCB.

Abstract: A cable binding device for binding cables includes a connector from which the cables extend, a fixing member detachably mounted to the connector, and a binding member pivotably mounted to the fixing member to bind the cables.

Abstract: A plug tool for plugging or unplugging a connector includes a first operation member and a second operation member. The connector includes a plug, a resilient latching piece, and a cable. The first operation member includes a fastening shell receiving the plug and a sleeve extending out from the fastening shell receiving the cable of the connector. The second operation member is rotatably connected to the sleeve. The second operation member includes a pressing portion for pressing the latching piece of the connector toward the plug.

Abstract: A connector assembly includes a connector and an auxiliary device. The connector includes a connection portion, and a cable connected to a rear end of the connection portion. A latch extends up and back from a front end of the connection portion. The auxiliary device includes a fastening member fastened to the connector, and a resilient tab extending up and forward from the fastening member. A front end of the resilient tab is located above the latch.

Abstract: A 2 unit (U) server includes a 2U chassis, two system modules, and two power supply units. The chassis includes a bottom plate, two side plates, a cover, and a middle plate arranged between the side plates in parallel. A supporting plate is connected between rear ends of the middle plate and each side plate. A distance between each supporting plate and the cover, and a distance between each supporting plate and the bottom plate is the same, being equal to 1U. A space between the middle plate and each side plate receives one of the system modules. A height of a front end of each system module is 2U. A height of a rear end of each system module is 1U. The rear end of each system module is received between the bottom plate and one of the supporting plates. Each supporting plate supports a power supply unit.

Abstract: A server includes a chassis and two cable organizers. The chassis includes an end wall, and a number of cables connected to an outer surface of the end wall. The cable organizers are mounted to opposite ends of the end wall. An opening is defined in each cable organizer, for allowing a palm of an operator to extend through. A number of substantially C-shaped cutouts is defined in each cable organizer in communication with the corresponding opening, for allowing the cables to engage in.

Abstract: A power strip includes a base, a cover, and a torsion spring. A socket is formed on a top of the base, for connecting a plug. The cover is pivotably connected to a rear end of the socket. A notch is defined in a front end of the cover. The torsion spring is connected between the cover and the socket, to bias the cover to cover the socket. When plugging the plug into the socket, the cover is rotated to expose the socket and the notch engages with and presses an extension portion on a top of the plug under an elastic force of the torsion spring, for preventing the plug from loosening.

Abstract: A socket assembly includes a base and a number of sockets. The base includes a bottom wall and two sidewalls. A conductive base is formed on the bottom wall and forms at least two conductive pieces parallel to the sidewalls. An extension plate extends from the top of one of the sidewalls toward the other sidewall. A number of cutouts are defined in the bottom surface of the extension plate. Each socket includes a main body and a fixing member mounted on the top of the main body. The manipulation of the fixing member allows the repositioning of a socket within the base, or the removal of a socket.

Abstract: A keyboard includes a keyboard body and a block rotatably connected to the keyboard body. The keyboard body defines a receiving space for receiving a mouse pad. The receiving space extends through an end surface of the keyboard body. The block is operable to rotate into the receiving space to block the mouse pad.

Abstract: A socket assembly includes a base and a number of sockets. The base includes a bottom wall and two sidewalls. A conductive base is formed on the bottom wall and forms at least two conductive pieces parallel to the sidewalls. An extension plate extends from the top of one of the sidewalls toward the other sidewall. A number of cutouts are defined in the bottom surface of the extension plate. Each socket includes a main body and a fixing member mounted on the top of the main body. The manipulation of the fixing member allows the repositioning of a socket within the base, or the removal of a socket.

Abstract: A male universal serial bus (USB) connector includes a connection terminal and a locking piece. The locking piece includes a mounting piece fixed to a top wall of the connection terminal, an operation piece, and a connecting piece connected between the operation piece and the mounting piece. A wedge extends on the mounting piece and can be engaged in a female USB connector to prevent the male USB connector from disengaging from the female USB connector.

Abstract: A SATA assembly includes a MSD and a SATA. The MSD includes a SATA interface, the SATA interface defines a slot. The SATA includes an insulative body, and a resilient plate. The resilient plate is fixed to the insulative body, the resilient plate includes a main section, a resilient arm protruding from the main section, and a latching portion protruding from the resilient arm. The latching portion is latched in the slot to hold the SATA in the SATA interface.

Abstract: A connector assembly includes a connector and two screws. The connector includes a main body, a cable connected to a rear side of the main body, and a connection portion protruding from a front side of the main body. Two threaded holes are defined in opposite ends of the main body, respectively. Two resilient fixing portions protrude from the rear side of the main body. A through hole is defined in each of the fixing portions. The screws are detachably received into the corresponding through holes of the fixing portions, and operable to mount the connector to an object by extending through the threaded holes to engage with the object.

Abstract: A video graphics array (VGA) interface switch apparatus includes first to third VGA interfaces, a single-pole double-throw (SPDT) switch, a switch control chip, and first to sixth electronic switches. The first VGA interface is connected to the second and third VGA interfaces through the switch control chip and the electronic switches. The SPDT switch is used to control the first VGA interface to be selectively connected to the second or third VGA interface.

Abstract: A male universal serial bus (USB) connector includes a connection terminal and a locking piece. The locking piece includes a mounting piece fixed to a top wall of the connection terminal, an operation piece, and a connecting piece connected between the operation piece and the mounting piece. A wedge extends on the mounting piece and can be engaged in a female USB connector to prevent the male USB connector from disengaging from the female USB connector.