BACKGROUND The aim of the present study was to investigate the effect of near-work on lower and higher-order aberrations, and its progression over a 9-month period during the school year. METHODS Data from 24 young-adult myopic eyes, and 24 non-myopic eyes were used in this investigation. The lower-order aberrations, coma, spherical aberration (SA), and total root mean square (RMS) of higher ...

Marine debris assessment gives information about their quantity, type, and composition, which provides data to help with management control. The authors conducted two surveys at three beaches Sam Son, Hai Tien, Hoa) in Thanh Hoa province March 2020 July 2020, respectively, during an inactive active tourism period. A total of 3,803 waste units were collected for assessment, plastic accounts more...

This paper presents a novel endeavor to use the Heap optimization algorithm (HOA) solve problem of optimal power flow (OPF) in electricity networks. The key objective is optimize cost fuel conventional generators under system limitations. Various scenarios are studied later stage considering addition PV panel and/or wind farm with changing load curves during typical day. active output selected ...

Thanh Hoa has a coastline of 102km, passing through districts from Nga Son, Hau Loc, Hoang Hoa, Sam Quang Xuong to Nghi Son. Along the coast are mouths Hoat river, Ma Yen Lach Truong, Cu Nham, Bang,... creating long and relatively large coastal area. This is also long-standing residence, labor, production area people. The desire reach out sea struggles protect maritime sovereignty against forei...

This manuscript describes CCN measurements in a polluted coastal area. The CCN concentrations are combined with size distribution measurements to derive cut-off diameters for activation. These are related to measurements of chemical composition (in particular the HOA fraction). A sensitivity study compares actual CCN concentrations to CCN concentrations predicted for pure ammonium sulfate aeros...

Abstract. A new methodology for performing long-term source apportionment (SA) using positive matrix factorization (PMF) is presented. The method implemented within the SoFi Pro software package and uses multilinear engine (ME-2) as a PMF solver. technique applied to 1-year aerosol chemical speciation monitor (ACSM) dataset from downtown Zurich, Switzerland. measured organic mass spectra were a...

BACKGROUND Hand photography has been used in a number of studies to determine the presence and severity of hand osteoarthritis (HOA). The aim of this study was to present age and gender specific prevalences of HOA diagnosed by this method. METHODS Six thousand three hundred forty three photographs (from 3676 females and 2667 males aged 40-96) were scored for hand osteoarthritis by a 0-3 grade...

Ambient non-refractory PM1 aerosol particles were measured with an Aerodyne High Resolution Timeof-Flight Aerosol Mass Spectrometer (HR-AMS) at an elementary school 18 m from the US 95 freeway soundwall in Las Vegas, Nevada, during January 2008. Additional collocated continuous measurements of black carbon (BC), carbon monoxide (CO), nitrogen oxides (NOx), and meteorological data were collected...

BACKGROUND The image formed by the eye's optics is blurred by the ocular aberrations, specific to each eye. Recent studies demonstrated that the eye is adapted to the level of blur produced by the high order aberrations (HOA). We examined whether visual coding is also adapted to the orientation of the natural HOA of the eye. METHODS AND FINDINGS Judgments of perceived blur were measured in 5 ...