Results 71 to 80 of about 26,326 (264)

Effect of Household Water Treatment on the Concentration of Heavy Metals of Drinking Water in Ahvaz City

open access: yesIranian South Medical Journal, 2020
Background: Some metals play an important role in  biological reactions  and metabolism of human body. Low and high concentrations of these elements can cause diseases and poisoning. This study was carried out in order to investigate the concentration of
Mohammad Velayatzadeh, Khoshnaz Payandeh
doaj  

A Microfluidic Biosensor Based on Magnetic Nanoparticle Separation, Quantum Dots Labeling and MnO2 Nanoflower Amplification for Rapid and Sensitive Detection of Salmonella Typhimurium

open access: yesMicromachines, 2020
Screening of foodborne pathogens is an effective way to prevent microbial food poisoning. A microfluidic biosensor was developed for rapid and sensitive detection of Salmonella Typhimurium using quantum dots (QDs) as fluorescent probes for sensor readout
Li Hao   +8 more
doaj   +1 more source

Paleoproterozic Icehouses and the Evolution of Oxygen Mediating Enzymes: The Case for a Late Origin of Photosystem -- II [PDF]

open access: yes, 2008
Two major geological problems regarding the origin of oxygenic photosynthesis are: (1) identifying a source of oxygen predating biological oxygen production and capable of driving the evolution of oxygen tolerance, and (2) determining when oxygenic ...
Kirschvink, Joseph L., Kopp, Robert E.
core  

Role of magnetic dopants in the phase diagram of Sm1111 pnictides: The Mn case

open access: yes, 2016
The deliberate insertion of magnetic Mn dopants in the Fe sites of the optimally-doped SmFeAsO0.88-F0.12 iron-based superconductor can modify in a controlled way its electronic properties.
Andersen, B. M.   +14 more
core   +1 more source

OPT3 is a component of the iron-signaling network between leaves and roots and misregulation of OPT3 leads to an over-accumulation of cadmium in seeds. [PDF]

open access: yes, 2014
Plants and seeds are the main dietary sources of zinc, iron, manganese, and copper, but are also the main entry point for toxic elements such as cadmium into the food chain. We report here that an Arabidopsis oligopeptide transporter mutant, opt3-2, over-
Akmakjian, Garo Z   +10 more
core   +2 more sources

Study on Toxic Substances in Astragalus adsurgens Infected with Alternaria gansuense

open access: yesAgriculture
Yellow stunt and root rot causes premature degradation of Astragalus adsurgens grasslands in China. However, the etiological factors underlying livestock poisoning following the ingestion of diseased plants remain elusive.
Huaqi Liu, Yanzhong Li
doaj   +1 more source

Comparative Assessing of Effects of some Active Compounds from Natural Sources on Lead Antagonism to Manganese in Carassius gibelio Bloch

open access: yesScientific Papers Animal Science and Biotechnologies, 2023
The purpose of this paper was to assess comparatively the manganse tissue distribution in selected organs of Prussian carp specimens before and after experimental lead intoxication, with and without some lyophilized herbs and algae addition in fish diet.
Marioara Nicula   +14 more
doaj  

Food safety [PDF]

open access: yes
Illness induced by unsafe food is a problem of great public health significance. This study relates exclusively to the occurrence of chemical agents which will result in food unsafe for human consumption since the matter of food safety is of paramount ...
Pier, S. M., Valentine, J. L.
core   +1 more source

Ultrasound–Calcination Synergistic Control of (Ce, La)PO4 Catalyst Structure for Enhanced Low‐Temperature NH3‐SCR Performance

open access: yesAsia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT In this study, (Ce, La)PO4 catalysts were synthesized via an ultrasound‐assisted method. The effects of ultrasound duration and calcination temperature on the low‐temperature NH3‐SCR performance were systematically investigated. The results indicated that the (Ce, La)PO4 catalyst prepared with an ultrasound treatment time of 20 min and a ...
Na Li   +4 more
wiley   +1 more source

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