Results 31 to 40 of about 423,824 (314)

Aerosol and precipitation chemistry measurements in a remote site in Central Amazonia: the role of biogenic contribution [PDF]

open access: yesAtmospheric Chemistry and Physics, 2012
In this analysis a 3.5 years data set of aerosol and precipitation chemistry, obtained in a remote site in Central Amazonia (Balbina, (1°55' S, 59°29' W, 174 m a.s.l.), about 200 km north of Manaus) is discussed.
T. Pauliquevis   +3 more
doaj   +1 more source

Optical-microphysical Properties of Saharan Dust Aerosols and Composition Relationship Using a Multi-wavelength Raman Lidar, in Situ Sensors and Modelling: a Case Study Analysis [PDF]

open access: yes, 2012
A strong Saharan dust event that occurred over the city of Athens, Greece (37.9° N, 23.6° E) between 27 March and 3 April 2009 was followed by a synergy of three instruments: a 6-wavelength Raman lidar, a CIMEL sun-sky radiometer and the MODIS sensor ...
Amiridis, Vassilis   +2 more
core   +2 more sources

Assessment of soil pH and heavy metal concentrations in agricultural land impacted with Medical Waste Incinerator (MWI) Flue Ash (FA) in Abia State, Nigeria

open access: yesJournal of Applied Sciences and Environmental Management, 2019
This study focused on the effect of heavy metals being introduced into soils through medical waste incinerator flue ash by collecting soil samples at different depths and distances to determine soil pH, Cu, Zn, Cr, Cd, Pb and Mn contents using standard ...
E.A. Ubuoh   +3 more
doaj   +1 more source

OPTIMASI NANOENKAPSULASI ASAP CAIR TEMPURUNG KELAPA DENGAN RESPONSE SURFACE METHODOLOGY DAN KARAKTERISASI NANOKAPSUL [Optimization of Coconut Shell Liquid Smoke Nanoencapsulation using Response Surface Methodology and Nanocapsules Characterization]

open access: yesJurnal Teknologi dan Industri Pangan, 2014
Liquid smoke is impractical and easy to deteriorate, thus needs to be protected against deterioration. Spray drying technique is widely used to encapsule bioactive compounds.
Dego Yusa Ali   +2 more
doaj   +1 more source

Effect of cigarette smoking on plasma uric acid concentrations [PDF]

open access: yesEnvironmental Health and Preventive Medicine, 2010
كان الغرض من هذه الدراسة هو فحص تأثير تدخين السجائر على تركيز حمض اليوريك في البلازما وتحديد العلاقة بين هذه المعلمة وعلامات التبغ البيولوجية، ثيوسيانات البلازما والكوتينين البولي. أجريت الدراسة الأولية على 300 شخص ؛ 138 منهم من غير المدخنين (62 رجلاً و 76 امرأة) تتراوح أعمارهم بين 14 و 72 عامًا و 162 من المدخنين الحاليين (145 رجلاً و 17 امرأة) تتراوح ...
Dhouha Haj Mouhamed   +5 more
openaire   +2 more sources

How do medical researchers make causal inferences? [PDF]

open access: yes, 2019
Bradford Hill (1965) highlighted nine aspects of the complex evidential situation a medical researcher faces when determining whether a causal relation exists between a disease and various conditions associated with it.
Dammann, Olaf   +2 more
core   +1 more source

Effect of smoking cessation on plasma ascorbic acid concentration [PDF]

open access: yesBMJ, 1996
Numerous studies have shown that cigarette smokers have a lower plasma concentration of ascorbic acid than non-smokers, but only a few have considered the antioxidant status of ex-smokers.1 We report the first controlled study monitoring the early effect of smoking cessation on the concentration of ascorbic acid in plasma.
Lykkesfeldt, J   +3 more
openaire   +2 more sources

Smoking and red blood cell phospholipid membrane fatty acids [PDF]

open access: yesProstaglandins, Leukotrienes and Essential Fatty Acids, 2016
Smoking is associated with lower n-3 long chain polyunsaturated fatty acids (LCPUFA) concentrations; however, limited studies have accounted for dietary PUFA intake or whether tobacco dose or smoking duration influences this association. We measured red blood cell phospholipid (RBC) membrane concentrations of fatty acids in 126 current smokers, 311 ...
H J, Murff   +8 more
openaire   +2 more sources

Characterization of crude and purified pumpkin seed oil.

open access: yesGrasas y Aceites, 1997
Oil from hulled pumpkin seeds (Cucurbita pepo and Cucurbita Maxima) was extracted with hot petroleum ether, and then it was degummed, neutralized and bleached, consecutively Physical and chemical characteristics of crude and purified oils were determined.
John Tsaknis   +2 more
doaj   +1 more source

Characteristics and composition of tomato seed oil

open access: yesGrasas y Aceites, 1998
Tomato seeds were separated from dried pomace, and seeds were ground and extracted with hot petroleum ether. The extracted oil was degummed, neutralised and bleached, and then the physical and chemical characteristics of crude and purified oils were ...
Evangelos S. Lazos   +2 more
doaj   +1 more source

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