Abstract: This invention relates to a triple layer composite nanofiber membrane for Membrane Distillation (MD) applications. The triple layer membrane has an extremely hydrophobic nanofiber layer, a hydrophobic microporous middle layer and a hydrophilic backing layer for MD applications.
Abstract: The present invention disclosed in this application relates to a method for producing glass membranes for filtration purposes. The disclosed method for producing cost effective glass membranes utilizes recycled waste glass, has shorter sintering periods and has lower sintering temperatures.
Type:
Application
Filed:
March 14, 2011
Publication date:
July 3, 2014
Applicant:
NGEE ANN POLYTECHNIC
Inventors:
Gurdev Singh, James Antony Prince, Xiaolong Sun
Abstract: There is provided a porous fiber having a core-shell configuration, wherein the pores on the fiber are configured to encapsulate and thereby retain a biological material therein.
Abstract: An optical configuration for a digital holographic microscope and a method for digital holographic microscopy are presented. In one embodiment, digital off-axis holograms are obtained using a cube beam splitter (110) to both split and combine a diverging spherical wavefront emerging from a microscope objective (108). When a plane numerical reference wavefront is used for the reconstruction of the recorded digital hologram, the phase curvature introduced by the microscope objective (108) together with the illuminating wave to the object wave can be physically compensated.
Type:
Grant
Filed:
August 21, 2009
Date of Patent:
January 29, 2013
Assignees:
Nanyang Technological University, Ngee Ann Polytechnic
Inventors:
Anand Krishna Asundi, Weijuan Qu, Oi Choo Chee
Abstract: A breathing apparatus comprising: an inlet configured to receive pressurised gases, an outlet configured to diffuse the pressurised gases within the dead space of a face mask, a detachable nozzle manifold configured to pass the pressurised gases from the inlet to the outlet, and a seal configured to substantially air tight seal the nozzle manifold between a user's face and a bottom inner surface of the mask.
Type:
Application
Filed:
October 14, 2010
Publication date:
April 19, 2012
Applicant:
Ngee Ann Polytechnic
Inventors:
Kok Meng Woon, Ah Kat Tan, Kaya Totong, Teck Soon Ong, Geoffrey Chor Yong Tan
Abstract: An optical configuration for a digital holographic microscope and a method for digital holographic microscopy are presented. In one embodiment, digital off-axis holograms are obtained using a cube beam splitter (110) to both split and combine a diverging spherical wavefront emerging from a microscope objective (108). When a plane numerical reference wavefront is used for the reconstruction of the recorded digital hologram, the phase curvature introduced by the microscope objective (108) together with the illuminating wave to the object wave can be physically compensated.
Type:
Application
Filed:
August 21, 2009
Publication date:
February 24, 2011
Applicants:
Nanyang Technological University, Ngee Ann Polytechnic
Inventors:
Anand Krishna Asundi, Weijuan Qu, Oi Choo
Abstract: A photonic switch for switching an incoming light beam from a first path to a second path, the photonic switch comprising a light sensitive material with a refractive index able to be changed by an induced light.
Abstract: The instrumentation amplifier circuit of the present invention is particularly suited for amplifying ECG signals, rejecting common mode signals and removing a DC offset. The preferred embodiment of the present invention basically comprises a front-stage differential amplifier, and a common-mode rejection circuit. By employing a twin-T network, the front stage differential amplifier is able to simultaneously remove the DC offset and achieve high gain using standard off-the-shelf components. The common mode differential gain, however, is zero, which is the desired result. The common-mode rejection circuit removes the common-mode signal to yield only the amplified ECG signal. The present amplifier circuit has a much greater DC offset tolerance than the prior art amplifier while the Common Mode Rejection Ratio (CMRR), residual noise at the output, and the input dynamic range is comparable to that of the prior art amplifier. Moreover, it requires fewer operational amplifiers.