Search

Your search keyword '"MICROSENSORS"' showing total 11 results
Start Over Descriptor "MICROSENSORS" Region united states
11 results on '"MICROSENSORS"'

1. Fabrication and Optimization of Poly(ε-caprolactone) Microspheres Loaded with S-Nitroso-N-Acetylpenicillamine for Nitric Oxide Delivery.

Author

Alvi, Syed Baseeruddin, Pracha, Nooruddin, Shalaan, Mahmoud, Dholaniya, Pankaj Singh, Mergaye, Muhamad, Sridharan, Divya, and Khan, Mahmood

Subjects
NITRIC oxide, MICROSPHERES, UMBILICAL veins, MICROSENSORS, CHEST pain
Abstract

Heart disease is one of the leading causes of death in the United States and throughout the world. While there are different techniques for reducing or preventing the impact of heart disease, nitric oxide (NO) is administered as nitroglycerin for reversing angina or chest pain. Unfortunately, due to its gaseous and short-lived half-life, NO can be difficult to study or even administer. Therefore, controlled delivery of NO is desirable for therapeutic use. In the current study, the goal was to fabricate NO-releasing microspheres (MSs) using a donor molecule, S-Nitroso-N-Acetyl penicillamine, (SNAP), and encapsulating it in poly(ε-caprolactone) (PCL) using a single-emulsion technique that can provide sustained delivery of NO to cells over time without posing any toxicity risks. Optimization of the fabrication process was performed by varying the duration of homogenization (5, 10, and 20 min) and its effect on entrapment efficiency and size. The optimized SNAP-MS had an entrapment efficiency of ˃50%. Furthermore, we developed a modified method for NO detection by using NO microsensors to detect the NO release from SNAP-MSs in real time, showing sustained release behavior. The fabricated SNAP-MSs were tested for biocompatibility with HUVECs (human umbilical vein endothelial cells), which were found to be biocompatible. Lastly, we tested the effect of controlled NO delivery to human induced pluripotent stem-derived cardiomyocytes (hiPSC-CMs) via SNAP-MSs, which showed a significant improvement in the electrophysiological parameters and alleviated anoxic stress. [ABSTRACT FROM AUTHOR]

Published
2024
Full Text
View/download PDF

2. Breathing Easy with Nose-on-a-chip.

Subjects
*MICROSENSORS, *CARBON monoxide, *GAS leakage
Abstract

Reports that Tennessee-based Oak Ridge National Laboratory is developing a low-cost, instant microsensor capable of detecting carbon dioxide, as well as natural gas leaks in stoves, heaters and other household appliances. Estimated number of people in the United States who die each from accidental exposure to carbon monoxide; Features of the nose-on-a-chip.

Published
1999

3. TECHNOLOGY: 'Electronic Nose' Aims to Improve Chemical Sensing Capabilities.

Author

Landers, Jay

Subjects
*CHEMICAL detectors, *ELECTROCHEMICAL sensors, *CHEMICAL apparatus, *MICROSENSORS, *ELECTRONIC equipment, *ENGINEERING instruments, *ELECTRONIC instruments, *INSTRUMENTAL analysis, *EQUIPMENT & supplies
Abstract

The article focuses on the U.S. National Institute of Standards and Technology's (NIST) development of microsensors technology for chemical sensing capabilities. The researchers used an array of 16 miniature sensors to test whether engineered sensors can be trained to determine unknown chemicals. It is intended to provide an inexpensive, low-power-consumption measurement capability for gas-phase composition and for detecting and monitoring target species within background. Microsensors outfitted with tiny heaters were used to facilitate analysis of chemicals at different temperatures.

Published
2009

4. SENSITIVE MICROSENSORS RECOGNIZE CHEMICAL WARFARE AGENTS.

Subjects
MICROELECTROMECHANICAL systems, CHEMICAL warfare agents, CHEMICAL weapons, MICROSENSORS
Abstract

Reports that researchers at the U.S. National Institute of Standards and Technology have developed silicon-based microelectromechanical (MEMS) devices that detect quantities of chemical warfare agents (CWA). Components of the MEMS; Result of the microsensor testing on CWA; Analysis of the initial artificial neural network.

Published
2003

5. Shortwave Infrared.

Subjects
INFRARED technology, NIGHT vision devices, ELECTROMAGNETIC fields, MICROSENSORS, GALLIUM arsenide
Abstract

The article reports that the U.S. military is examining the short-wave infrared (SWIR) technology that will be used in the next generation of its night vision systems. The SWIR technology operates between the visible and thermal bands of the electromagnetic spectrum. The article also mentions that the Defense Advanced Research Projects Agency Microsensors for Imaging program is initiating the effort for a gallium arsenide crystal and SWIR sensor technology.

Published
2008

6. Sensor technology offers versatility in gas detection.

Author

Comello, Victor

Subjects
MICROSENSORS, ELECTROCHEMICAL sensors
Abstract

Focuses on the development and capabilities of the electrocatalytic gas (ECG) microsensor technology by researchers at the Argonne National Laboratory in Chicago, Illinois. Design and technology; Applications; Operational procedures; Optimal use; Industrial applications; Contact information.

Published
1996

7. DARPA SELECTS GOODRICH TO DEVELOP NEXT-GENERATION NIGHT VISION TECHNOLOGY.

Subjects
NIGHT vision devices, DRONE aircraft, MICROSENSORS
Abstract

The article reports on the selection of Goodrich Corp. by the U.S. Defense Advanced Projects Agency (DARPA) in February 2008 to develop next-generation night-vision sensor technology. A contract was issued to Goodrich's ISR System division under MicroSensors for Imaging (MISI) program under which Goodrich's Sensors Unlimited Inc. (SUI) team will develop its indium gallium arsenide-night vision (InGaAs-NV) SWIR sensors into a light-weight camera intended for hand-launched unmanned aerial vehicles.

Published
2008

8. Grab-a-Lab at Hand.

Author

Babyak, Richard J.

Subjects
ELECTRIC equipment, MICROSENSORS
Abstract

Reports on the devices developed by researchers from Sandia National Laboratories. Device that allows one to analyze food, water, air or topsoil with a level of sophistication that matches a full-scale chemistry laboratory; Information on the acoustic wave microsensors from Sandia; Alternative piezoelectric material for acoustic wave chemical sensors discovered by Sandia.

Published
2000

9. Microdrilling technology should lead to new applications for microsensors.

Author

Ajluni, Cheryl

Subjects
*DRILLING & boring machinery, *MICROSENSORS, *SPACE exploration
Abstract

Focuses on the microdrilling technology for space missions by Los Alamos National Laboratory in New Mexico. Role in the advancement of microsensors; Use of the technology in monitoring underground nuclear testing; Support from the Department of Energy and oil companies; Components, structure and cost effectiveness of the technology.

Published
1999

10. Quartz microsensors.

Author

O'Connor, Leo

Subjects
*MICROSENSORS
Abstract

Reports on how Allied-Signal was able to reduce the concentration of volatile organic compounds that result from the process of spraying solvents to clean printed circuit boards, by using quartz microsensors developed at Sandia National Laboratories.

Published
1995

11. Microsensors could detect icing on airplane wings.

Subjects
MICROSENSORS, TECHNOLOGICAL innovations
Abstract

Reports that an investigation on miniature sensors which could detect ice on critical surfaces such as airplane wings is being conducted through the collaboration of scientists from the US Army and Case Western Reserve University in Cleveland, Ohio.

Published
1995

Catalog

Books, media, physical & digital resources
See catalog results