摘要:
The present disclosure describes the isolation, identification and purification of aptamers having sufficiently high affinity and specificity to capture and immobilize intact sperm cells in the presence of female epithelial cells and other non-sperm semen components. The present disclosure also describes affinity-based methods for the detection of sperm cells in samples, including from forensic sample surrogates consisting of swab eluates containing a mixture of HeLa cells and sperm cells. The present disclosure describes methods for eluting sperm cell samples from swabs; methods for purifying sperm cells and methods for amplification and analysis of male DNA. The affinity-based system described herein is inexpensive, simple to use and easily implemented in forensic laboratories.
摘要:
A medical apparatus comprises a control system allowing storage of a number of shaping profiles. Each shaping profile is stored as a plurality of pairs, including a shaping profile reference value and a time interval value. The reference value is represented as fraction, for instance a percentage, of the total weight loss the apparatus should achieve at the end of a treatment time. Each time interval value is represented either as fraction of the total treatment time or as a prefixed actual time interval. The control system calculates the actual weight loss rate versus time profile based on the desired total weight loss, on the desired total treatment time as well as on selected desired shaping profile.
摘要:
Apparatus for limiting and displaying fader levels employing a display device provided with a linear bar graph display having a plurality of bar graph segments and having an input to which a display signal of variable value can be applied. The display signal has a value range with predetermined maximum and minimum values. The device responds to any value of the display signal to illuminate a corresponding segment. A fader mechanism is manually adjustable to produce a fader signal of variable value. The fader signal has a value range with maximum and minimum values which respectively exceed and fall below the corresponding maximum and minimum values of the display signal. A computer has an input at which the fader signal is applied. The computer stores the maximum and minimum values of the display signal and compares the value of the fader signal with the stored values to produce a display signal. The display signal has a value equal to the fader signal unaltered when the value of the fader signal falls within the range of the display signals; the display signal has its maximum value when the value of the fader signal is in excess of the maximum value of the display signal and has its minimum value when the value of the fader signal falls below the minimum value of the display signal. The display signal appears at an output of the computer is supplied to the input of the display device.
摘要:
A set of offset signal values is obtained for use with a time base corrector unit which is capable of playing a video tape to produce a corresponding output video signal containing various viewing parameters such as video gain, chroma gain, set up and hue. A tape having a known set of parameter values and carrying test patterns is used together with a source of a standard reference video signal, and a source of a variable offset signal. The viewing parameter settings of the unit are adjusted to conform to the known set of parameter values. The tape is played in the unit, thus displaying the test pattern video output signal. The output signal is displayed with the reference signal, the reference signal containing the same parameters but with different values. An offset signal is applied to the input of the unit. The offset signal is varied to vary the video output signal for each parameter in turn until each parameter of the varied output signal is visually identical to that of the standard reference signal, thereby obtaining a set of offset signal values associated with the unit, each value in the set being associated with a different parameter.
摘要:
The present disclosure relates to patient-specific bone implants and methods for designing and making such implants. A method includes obtaining an image of a bone having an injured, diseased, or degenerative portion; determining in the image the margins at each end of the injured portion of the bone; transforming the image into a three-dimensional model; conducting a virtual surgery to remove the injured portion of the bone and create a virtual bone gap in the image; designing a patient-specific implant to fit the virtual bone gap, wherein the designed implant includes a framework having a porosity sufficient to allow blood entry through the framework and having mechanical properties similar to that of bone; and fabricating an implant based on the designed implant. Optionally, bone regeneration material is placed within the framework.
摘要:
A medical apparatus comprises a control system allowing storage of a number of shaping profiles. Each shaping profile is stored as a plurality of pairs, including a shaping profile reference value and a time interval value. The reference value is represented as fraction, for instance a percentage, of the total weight loss the apparatus should achieve at the end of a treatment time. Each time interval value is represented either as fraction of the total treatment time or as a prefixed actual time interval. The control system calculates the actual weight loss rate versus time profile based on the desired total weight loss, on the desired total treatment time as well as on selected desired shaping profile.
摘要:
A medical apparatus comprises a control system allowing storage of a number of shaping profiles. Each shaping profile is stored as a plurality of pairs, including a shaping profile reference value and a time interval value. The reference value is represented as fraction, for instance a percentage, of the total weight loss the apparatus should achieve at the end of a treatment time. Each time interval value is represented either as fraction of the total treatment time or as a prefixed actual time interval. The control system calculates the actual weight loss rate versus time profile based on the desired total weight loss, on the desired total treatment time as well as on selected desired shaping profile.
摘要:
A robust microelectromechanical switch. In an illustrative embodiment, the switch is adapted for use in a display and includes a first flexible surface and a second surface. The second surface is angled relative to the first surface, forming a wedge the first surface and the second surface. A first terminal and a second terminal are positioned relative to the first flexible surface and the second surface so that selective flexing of the flexible surface electrically couples or uncouples the first terminal to the second terminal. In a more specific embodiment, the switch further includes a first mechanism for selectively applying an electrostatic force between the first flexible surface and the second surface. The first surface is positioned on a first elastic flexible layer, and the second surface is positioned on a second layer. The first mechanism includes a first actuator electrode that is coupled to the first surface, and a second actuator electrode that is coupled to the second surface. A sufficient charge differential applied between the first actuator electrode and the second actuator electrode will attract the first electrode to the second electrode, thereby flexing the flexible layer toward the second layer. The sidewalls define a perimeter of a cell that houses the switch. A protrusion extends from a third layer between the sidewalls, thereby indenting the first layer, and thereby forming the wedge.
摘要:
Micro-electromechanical devices having an improved flexible layer enable the use of material having a wider range of elastic modulus. The MEM devices include a substantially non-pliable layer and a substantially flexible layer both of which include electrodes that when energized will create electrostatic forces that attracts the flexible layer to the non-pliable layer. The flexible layer has perforations or apertures cut into the flexible layer of a MEMs device to alter operational properties such as electrostatic sensitivity, resonance frequency, rate of change of sensitivity above the resonance frequency, oscillating mass, panel stiffness and others parameters.