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| 1 | Air quality monitoring using mobile microscopy and machine learning显示文摘Rapid,accurate and high-throughput sizing and quantification of particulate matter(PM)in air is crucial for monitoring and improving air quality.In fact,particles in air with a diameter of≤2.5μm have been classified as carcinogenic by the World Health Organization.Here we present a field-portable cost-effective platform for high-throughput quantification of particulate matter using computational lens-free microscopy and machine-learning.This platform,termed c-Air,is also integrated with a smartphone application for device control and display of results.This mobile device rapidly screens 6.5 L of air in 30 s and generates microscopic images of the aerosols in air.It provides statistics of the particle size and density distribution with a sizing accuracy of~93%.We tested this mobile platform by measuring the air quality at different indoor and outdoor environments and measurement times,and compared our results to those of an Environmental Protection Agency–approved device based on beta-attenuation monitoring,which showed strong correlation to c-Air measurements.Furthermore,we used c-Air to map the air quality around Los Angeles International Airport(LAX)over 24 h to confirm that the impact of LAX on increased PM concentration was present even at 47 km away from the airport,especially along the direction of landing flights.With its machinelearning-based computational microscopy interface,c-Air can be adaptively tailored to detect specific particles in air,for example,various types of pollen and mold and provide a cost-effective mobile solution for highly accurate and distributed sensing of air quality. | Yi-Chen Wu Ashutosh Shiledar Yi-Cheng Li Jeffrey Wong Steve Feng Xuan Chen Christine Chen Kevin Jin Saba Janamian Zhe Yang Zachary Scott Ballard Zoltán Göröcs Alborz Feizi Aydogan Ozcan | 2017 | Light(Science & Applications)2017，6，1： | 5 |
| 2 | Opti- mised anaesthesia to reduce post operative cognitive decline (POCD)in older patients undergoing elective surgery,a randomisedcontrolled trial显示文摘 | Ballard C Jones E Gauge N | 2012 | PLoS 0ne2012，7，37： | 1 |
| 3 | Predictive coding in the visual cortex:a functional interpretation of some extra-classical receptive-field effects 显示文摘 | RAO R P N BALLARD D H | 1999 | Nature Neuroscience1999，2，1： | 1 |
| 4 | Optimised anaesthesia to reducepost operative cognitive decline(POCD)in older patients undergoingelective surgery,a randomised controlled trial显示文摘 | Ballard C Jones L Gauge N | 2012 | PLoS One2012，7，37： | 1 |
| 5 | Ribotype delineation and description of Staphylococcus sciuri subspecies and their potential as reservoirs of methicillin resistance and staphylolytic enzyme genes显示文摘 | KLOOS W E BALLARD D N WEBSTER J A | 1997 | International Journal of Systematic Bacteriology1997，47，2： | 1 |
| 6 | Dynamic Uptake and Release from Poly (methacryloyl hydrazide) Microgel Particles Through Reversible Hydrazide-Aldehyde Chemistry显示文摘 | Ballard N Bon S A F | 2014 | Polym Chem2014，5，23： | 1 |
| 7 | How our ICU decreased the rate of hospital-acquired pressure ulcers显示文摘 | BALLARD N MCCOMBS A DEBOOR S | 2008 | J Nurs Care Qual2008，23，1： | 1 |
| 8 | Mesoscale model experimental forecasts of the haar of northeast Scotland显示文摘 | BALLARD S P GOIDING B W SMITH R N B | 1991 | Mon Weather Rev1991，119，9： | 1 |
| 9 | Choline Acetyltransferase Activity in Vascular Dementia and Stroke显示文摘 | Sharp Sally I Francis Paul T Elliott Mark S J Kalaria Rajesh N Bajic Natasha Hortobagyi Tibor Ballard Clive G | 2009 | Dementia and Geriatric Cognitive Disorders2009，，3： | 1 |
| 10 | Ethnic differences in adolescent self-poisoning: A comparison of Asian and Caucasian groups 显示文摘 | Handy S Chithiramohan R N Ballard C G | 1991 | Journal of Adolescence1991，14，： | 1 |
| 11 | Absence of benefit of eradicating Helicobacter pylori in patients with nonulcer dyspepsia显示文摘 | Talley NJ Vakil N Ballard ED | | 0，，15： | 1 |
| 12 | Ethnic Differences in Adolescent Self-Poisoning:A Comparison of Asian and Caucasian Groups显示文摘 | Handy S Chithiramohan R N Ballard C G | 1991 | Journal of Adolescence1991，14，： | 1 |
| 13 | The experience of stress for open heart surgery patients and their caregivers 显示文摘 | Robley L Ballard N Holtzman D | 2010 | West J Nurs Res2010，32，6： | 1 |
| 14 | Mesoscale modelexperiment forecasts of the haar of northeast Scotland 显示文摘 | Ballard S P Golding B W Sminth R N B | 1991 | Mon Wea Rev1991，119，： | 1 |
| 15 | Optimised anaesthesi-a to reduce post operative cognitive decline ( POCD) in older pa-tients undergoing elective surgery, a randomised controlled trial显示文摘 | BALLARD C JONES E GAUGE N | 2012 | PLoS One2012，7，37： | 1 |
| 16 | PPAR - gamma ag- onist protects against intestinal injury during necrotizing enterocolitis 显示文摘 | Baregamian N Mourot JM Ballard AR | 2009 | Biochem Biophys Res Commun2009，379，7： | 1 |
| 17 | Optimised anaesthesia to reduce post operative cognitive decline (POCD) in older patients undergoing elective surgery, a randomised controlled trial 显示文摘 | Ballard C Jones E Gauge N | 2012 | PLoS One2012，7，37： | 1 |
| 18 | The met office global 3-dimensional variational data assimilation scheme 显示文摘 | Lorenc A C Ballard S P Bell R S Ingleby N B Andrews P L F Barker D M Bray J R Clayton A M Dalby T Li D Payne T J Saunders F W | 2000 | Quart J Roy Meteor Soc2000，126，570： | 1 |
| 19 | γ- Secretase modulator (GSM) photoaffinity probes reveal distinct allosteric binding sites on presenil- in显示文摘 | Pozdnyakov N Murrey HE Crump CJ Pettersson M Ballard TE Ende CW | 2013 | J Biol Chem2013，288，14： | 1 |
| 20 | 5alpha-reductase expression by prostate cancer cell lines and benign prostatic hyperplasia in vitro 显示文摘 | Smith C M Ballard S A Worman N | 1996 | Clin Endocrinol Metab1996，81，4： | 1 |
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