scholarly journals Curved CMOS sensor: characterization of the first fully functional prototype

2018 ◽  
Author(s):  
Simona Lombardo ◽  
Thibault Behaghel ◽  
Emmanuel Hugot ◽  
Eduard R. Muslimov ◽  
Mélanie Roulet ◽  
...  
Keyword(s):  
Cmos Sensor ◽  
Functional Prototype

Characterization of a Novel Emergency Suction Device for Combat Medics

2019 ◽  
Vol 13 (4) ◽  
Author(s):  
Forhad Akhter ◽  
Austin Schoppe ◽  
Omar Navarro ◽  
Christopher Carroll ◽  
Priya Jain ◽  
...  
Keyword(s):  
Solid Particles ◽  
Proof Of Concept ◽  
Suction System ◽  
Suction Device ◽  
Life Saving ◽  
Combat Medics ◽  
Bone Fragments ◽  
Functional Prototype ◽  
Combat Environment

Abstract Airway clearance is a foremost priority for combat medics dealing with battlefield trauma. This life saving intervention starts with inspection, clearing any obstructions from the airway, and if necessary, placement of an endotracheal tube to secure the airway. For inspecting and clearing the airway under complicated battlefield conditions, combat medics require a portable suction device that is compact, lightweight, rugged, and capable of rapidly evacuating a mix of liquid and solid particles, which may include bone fragments or broken teeth. While several portable suction devices are available on the market, none were developed specifically for the combat environment. Interviews with combat medics and other relevant personnel revealed that currently available systems are limited in utility to the point of often being intentionally omitted from their kits. In addition, these discussions identified several design specifications for a desired system, such as size (30 × 10 × 10 cm), weight (≤1 kg), fluid flowrate (1 L/min), and canister size (0.5–1 L), among others. This research focused on developing and characterizing a functional prototype within the specified design criteria. After designing and fabricating the device, evacuation of water, blood mimicking solution, and simulated vomitus solution were assessed. In addition, a comparative analysis was carried out between the five different commercially available suction catheters by assessing fluid flow rate and obstruction resistance. The results demonstrate the first proof-of-concept characterization for a novel combat-oriented suction system and provide a basis for comparing the performance of suction systems and catheters used in airway management.

Characterization of x-ray lobster optics with a hybrid CMOS sensor (Conference Presentation)

2017 ◽  
Author(s):  
Tanmoy Chattopadhyay ◽  
Mitchell Wages ◽  
David Burrows ◽  
Evan Bray ◽  
Adolf Inneman ◽  
...  
Keyword(s):  
X Ray ◽  
Cmos Sensor ◽  
Hybrid Cmos

scholarly journals Optical System Design of a Wide Field-of-View Camera for the Characterization of Earth’s Reflected Solar Radiation

2020 ◽  
Vol 12 (16) ◽  
pp. 2556
Author(s):  
Luca Schifano ◽  
Lien Smeesters ◽  
Francis Berghmans ◽  
Steven Dewitte
Keyword(s):  
Solar Radiation ◽  
Field Of View ◽  
Opening Angle ◽  
Wide Field ◽  
Lens System ◽  
Optical System Design ◽  
Cmos Sensor ◽  
Wide Field Of View ◽  
Commercial Off The Shelf

We report on the conceptual design of a new wide field-of-view shortwave camera, for measuring Earth’s reflected solar radiation. The camera comprises a commercial-off-the-shelf CMOS sensor, and a custom-designed wide field-of-view lens system with an opening angle of 140°. The estimated effective nadir resolution is 2.2 km. The simulated stand-alone random error of the broadband albedo is 3%. The camera is suited for integration within 1U of a CubeSat.

scholarly journals PHOTOMETRIC CHARACTERIZATION OF A COMMERCIAL DSLR CAMERA FOR THE IMPLEMENTATION OF AN IMAGING LUMINANCE METER

Anales AFA ◽  
2021 ◽  
Vol 31 (4) ◽  
pp. 143-149
Author(s):  
O. U. Preciado ◽  
◽  
A. Décima ◽  
J.B. Barraza ◽  
◽  
...  
Keyword(s):  
Dynamic Range ◽  
Spectral Response ◽  
High Dynamic Range ◽  
Absolute Calibration ◽  
Successful Implementation ◽  
Pilot Test ◽  
Response Curves ◽  
Cmos Sensor ◽  
High Dynamic

In this paper we describe the procedure followed in the photometric characterization of a DSLR camera in order to implement an imaging luminance meter. The first step consisted in the experimental setup of a system to obtain the spectral response curves of the CMOS sensor for its three channels: red (R), green (G) and blue (B). Then, based on the linear combination of the RGB channel curves, we calculated an approximation of the CIE luminous efficiency function, V(λ), for the camera. We then characterized the camera lens which involved measuring its spectral transmittance and evaluating the uniformity of the lens-sensor assembly to compensate for loss of sensitivity at the image periphery (vignetting). Finally, we performed an absolute calibration in luminance and carried out a pilot test to create high dynamic range (HDR) images and luminance maps of a scene. The favourable results of the pilot test augur a successful implementation of the image luminance meter, however, it is necessary to finish with the development of a software for the image processing and to do more tests in order to be able to validate its use in different situations or to establish the restrictions of its use.

Morphological Characterization of Mycobacteriophage R1

1974 ◽  
Vol 32 ◽  
pp. 254-255
Author(s):  
B. L. Soloff ◽  
T. A. Rado
Keyword(s):  
Carbon Source ◽  
Stationary Phase ◽  
Growth Phase ◽  
Minimal Medium ◽  
Morphological Characterization ◽  
Logarithmic Growth Phase ◽  
Complete Lysis ◽  
Lysogenic Culture ◽  
Logarithmic Growth

Mycobacteriophage R1 was originally isolated from a lysogenic culture of M. butyricum. The virus was propagated on a leucine-requiring derivative of M. smegmatis, 607 leu−, isolated by nitrosoguanidine mutagenesis of typestrain ATCC 607. Growth was accomplished in a minimal medium containing glycerol and glucose as carbon source and enriched by the addition of 80 μg/ ml L-leucine. Bacteria in early logarithmic growth phase were infected with virus at a multiplicity of 5, and incubated with aeration for 8 hours. The partially lysed suspension was diluted 1:10 in growth medium and incubated for a further 8 hours. This permitted stationary phase cells to re-enter logarithmic growth and resulted in complete lysis of the culture.

AEM analysis of crystallization in Ti-based amorphous alloys

1983 ◽  
Vol 41 ◽  
pp. 270-271
Author(s):  
A.R. Pelton ◽  
A.F. Marshall ◽  
Y.S. Lee
Keyword(s):  
Magnetic Properties ◽  
Amorphous Alloys ◽  
Amorphous Materials ◽  
Isothermal Annealing ◽  
Amorphous Matrix ◽  
Nucleation And Growth ◽  
Current Interest ◽  
Amorphous Films ◽  
Electrical And Magnetic Properties

Amorphous materials are of current interest due to their desirable mechanical, electrical and magnetic properties. Furthermore, crystallizing amorphous alloys provides an avenue for discerning sequential and competitive phases thus allowing access to otherwise inaccessible crystalline structures. Previous studies have shown the benefits of using AEM to determine crystal structures and compositions of partially crystallized alloys. The present paper will discuss the AEM characterization of crystallized Cu-Ti and Ni-Ti amorphous films.Cu60Ti40: The amorphous alloy Cu60Ti40, when continuously heated, forms a simple intermediate, macrocrystalline phase which then transforms to the ordered, equilibrium Cu3Ti2 phase. However, contrary to what one would expect from kinetic considerations, isothermal annealing below the isochronal crystallization temperature results in direct nucleation and growth of Cu3Ti2 from the amorphous matrix.

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