Results 11 to 20 of about 655 (183)

Prevalence of spina bifida across the lifespan in the USA. [PDF]

Dev Med Child Neurol
This original article is commented on by Corona‐Rivera on pages 1177–1178 of this issue. Abstract Aim To estimate the prevalence of spina bifida across the lifespan, the number of people with spina bifida by state, and variations in spina bifida prevalence by insurance type, state, and selected demographics.
Bershadsky J, Riley C, Pettingell SL, Larson SA, Hall-Lande J, Hallas L, Liu T, Reefhuis J.   +7 more
europepmc   +2 more sources

Medical marijuana policies, opioid prescriptions, and adverse events among patients undergoing cancer resection surgery. [PDF]

Cancer
Abstract Background Opioid use and adverse events among cancer patients may change with access to medical marijuana. This study investigated the impacts of medical marijuana legalization (MML) since 2016. Methods Using a difference‐in‐differences approach and 2016 to 2022 private insurance claims data, this cross‐sectional study included patients (aged
Hu JC, Karan K, Zhang H, Portenoy R, Rosa WE, Zhang Y, Reid MC, Tamimi RM, Zhang F, Bruera E, Paice JA, Bao Y.   +11 more
europepmc   +2 more sources

ANALYSIS OF ADVANCED TECHNOLOGY FOR COMBUSTION OF HOMOGENEOUS FUEL MIXTURE [PDF]

Scientific Journal of Silesian University of Technology. Series Transport, 2022
The most serious problems to overcome for a successful operation of the HCCI engine are control of the combustion phase, limited operational range, cold start of engine and high noise level during engine operation.
Michal PUŠKÁR, Matúš LAVČÁK, Marieta ŠOLTÉSOVÁ, Melichar KOPAS   +3 more
doaj   +1 more source

A simple HCCI engine model for control [PDF]

2006 IEEE Conference on Computer Aided Control System Design, 2006 IEEE International Conference on Control Applications, 2006 IEEE International Symposium on Intelligent Control, 2006
The homogenous charge compression ignition (HCCI) engine is an attractive technology because of its high efficiency and low emissions. However, HCCI lacks a direct combustion trigger making control of combustion timing challenging, especially during transients. To aid in HCCI engine control we present a simple model of the HCCI combustion process valid
Killingsworth, Nick J., Aceves, Salavador M., Flowers, Daniel L., Krstic, Miroslav   +3 more
openaire   +1 more source

Study on cast-weld process and composite interface of bimetal composite roll sleeve

Journal of Materials Research and Technology, 2021
A new method, named bimetal cast-weld composite process, was used to produce the roll sleeves in this works. The roll sleeves comprised the flexible low alloy steel (LAS), the low melting point cast iron surfacing layer (Surfacing layer) and the hard ...
Di Wang, Shoufan Rong
doaj   +1 more source

Microstructural Characterization of a Component Manufactured by Hybrid Casting of Two Different Ferrous Alloys

Materials Research, 2023
Hybrid casting is a new fabrication concept that can reduce costs and production time of large tools, such as stamping tools for the automotive industry.
E.L.S. Junior, R. Leibholz, M.S.F. Lima, K. Zilnyk   +3 more
doaj   +1 more source

New evidence on the impacts of cross-market hospital mergers on commercial prices and measures of quality. [PDF]

Health Serv Res
Abstract Objective To examine the impact of “cross‐market” hospital mergers on prices and quality and the extent to which serial acquisitions contribute to any measured effects. Data Sources 2009–2017 commercial claims from the Health Care Cost Institute (HCCI) and quality measures from Hospital Compare.
Arnold DR, King JS, Fulton BD, Montague AD, Gudiksen KL, Greaney TL, Scheffler RM.   +6 more
europepmc   +2 more sources

Homogeneous Charge Compression Ignition Combustion: Challenges and Proposed Solutions

Journal of Combustion, 2013
Engine and car manufacturers are experiencing the demand concerning fuel efficiency and low emissions from both consumers and governments. Homogeneous charge compression ignition (HCCI) is an alternative combustion technology that is cleaner and more ...
Mohammad Izadi Najafabadi, Nuraini Abdul Aziz   +1 more
doaj   +1 more source

Estimation of the COVIMEP Variation in a HCCI Engine

Politeknik Dergisi, 2020
In this study, variation of the COVIMEP was tried to be predicted by using the artificial neural network method for 4-stroke, 4-cylinder, direct injection and supercharged HCCI engine experimental data obtained by using n-heptane fuel at 60 oC intake air temperature, 1000 rpm engine speed at different inlet air intake pressure.
Seyfi POLAT, Hamit SOLMAZ, Alper CALAM, Emre YILMAZ   +3 more
openaire   +6 more sources

Biodiesels powered in-cylinder common rail direct injection (CRDi) Assisted Homogeneous Charge Compression Ignition (HCCI) engine

International Journal of Sustainable Engineering, 2021
Experimental tests were performed on homogeneous charge compression ignition (HCCI) with in-cylinder direct injection (DI) of diesel, biodiesel of Ceiba Pentandra oil methyl ester (CPOME) and biodiesel of Acid oil methyl ester (ACOME).
Nagesh S.B., N.R. Banapurmath, Chandrashekhar T.K., S.V. Khandal   +3 more
doaj   +1 more source