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Attomolar-sensitive milk fever sensor using 3D-printed multiplex sensing structures.
Nat Commun
January 2025
School of Animal Sciences, Virginia Tech, Blacksburg, USA.
The diagnosis of milk fever or hypocalcemia in lactating cows has a significant economic impact on the dairy industry. It is challenging to identify asymptomatic subclinical hypocalcemia (SCH) in transition dairy cows. Monitoring subclinical hypocalcemia in milk samples can expedite treatment and improve the health, productivity, and welfare of dairy cows.
View Article and Find Full Text PDFBistable soft jumper capable of fast response and high takeoff velocity.
Sci Robot
August 2024
State Key Laboratory of Fluid Power and Mechatronic Systems, College of Mechanical Engineering, Zhejiang University, Hangzhou 310027, China.
In contrast with jumping robots made from rigid materials, soft jumpers composed of compliant and elastically deformable materials exhibit superior impact resistance and mechanically robust functionality. However, recent efforts to create stimuli-responsive jumpers from soft materials were limited in their response speed, takeoff velocity, and travel distance. Here, we report a magnetic-driven, ultrafast bistable soft jumper that exhibits good jumping capability (jumping more than 108 body heights with a takeoff velocity of more than 2 meters per second) and fast response time (less than 15 milliseconds) compared with previous soft jumping robots.
View Article and Find Full Text PDFEvaluation of Inhaled Nitric Oxide Generation Systems at Altitude.
Mil Med
August 2024
Department of Surgery, University of Cincinnati School of Medicine, Cincinnati, OH 45267, USA.
Introduction: Inhaled nitric oxide (INO) is a selective pulmonary vasodilator delivered from compressed gas cylinders filled to 2,200 psig (137.8 bar) with 800 ppm of NO in a balance of nitrogen. NO is currently FDA-approved for use in term or near-term infants with hypoxemia and signs of pulmonary hypertension in the absence of cardiac disease.
View Article and Find Full Text PDFAn Automated "Hands-Off" Method for Sampling Mainstream Smoke from Cannabis Cigarettes.
Toxics
April 2024
Organic Analytical Laboratory, Division of Atmospheric Sciences, Desert Research Institute, Reno, NV 89512, USA.
A simple-to-use, portable, and relatively inexpensive system for characterizing the chemical components of mainstream smoke from cannabis cigarettes was developed and tested by using commercial hemp cigarettes. The system is described, and its performance for reproducing actual user puff topographies is shown along with extensive chemical analysis data, including PAHs, carbonyls, and organic and elemental carbon, for a small set of initial samples. By using a solid-state flow meter and fast-response mass flow controller, the prototype can reproduce measured puff topography with excellent fidelity, which will allow users to accurately reproduce the actual inhalation patterns for various types of smoking products and consumers, and to collect samples of mainstream smoke without the need to bring test subjects or controlled substances into a laboratory.
View Article and Find Full Text PDFA single excitation dual emission semi-salamo type multi-functional probe for sensitive pH and Cu detection.
Spectrochim Acta A Mol Biomol Spectrosc
October 2024
School of Chemistry and Chemical Engineering, Lanzhou Jiaotong University, Lanzhou, Gansu 730070, China.
pH and Cu ion concentration changes are linked to disorders like Alzheimer's and cancer. Rapid detection of pH and Cu ions is critical for public health and environmental concerns. The semi-salamo-type probe (E)-2-hydroxy-1-naphthaldehyde O-(2-(aminooxy)ethyl) oxime (NSS) demonstrated substantial dual-functional performance, sensing pH change and Cu ions.
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