Results 81 to 90 of about 659,088 (207)

Essential Trace Elements in Three Species of Dolphins Stranded in the Croatian Part of the Adriatic Sea from 1995 to 2013

Animals
Trace elements are widely distributed in the environment and are considered essential when their deficiency leads to impaired biological function. This study aimed to quantify concentrations of two essential trace elements—copper (Cu) and zinc (Zn)—in ...
Maja Đokić, Nina Bilandžić, Marija Sedak, Tomislav Bolanča, Tomislav Gomerčić, Martina Đuras, Miroslav Benić   +6 more
doaj   +1 more source

TGA/FTIR Studies on the Thermal Degradation of some Polymeric Sulfonic and Phosphonic Acids and Their Sodium Salts [PDF]

, 1999
The thermal degradation of poly(vinyl sulfonic acid) and its sodium salt, poly(4-styrenesulfonic acid) and its sodium salt, and poly(vinylphosphonic acid) was studied by a combination of techniques, including TGA/FTIR, to identify the volatile products ...
Jiang, David D., McKinney, Michael A., Wilkie, Charles, Yao, Qiang   +3 more
core   +1 more source

Unraveling the Catalytic Mechanism of Nitrile Hydratases [PDF]

, 2007
To elucidate a detailed catalytic mechanism for nitrile hydratases (NHases), the pH and temperature dependence of the kinetic constants kcat and Km for the cobalt-type NHase from Pseudonocardia thermophila JCM 3095 (PtNHase) were examined.
Holz, Richard C., Mitra, Sanghamitra
core   +1 more source

Pesticide residue detection techniques for increasing productivity and yield: recent progress and future outlooks

Frontiers in Plant Science
The intensive use of pesticides in modern agriculture has significantly improved crop yield and food security but introduced serious health concerns due to the accumulation of pesticide residues in fruits and vegetables and the environment, posing ...
Muhammad Umer, Muhammad Umer, Abid Naseer, Mustansar Mubeen, Yasir Iftikhar, Yasir Iftikhar, Rafia Umer, Ayesha Akram, Muhammad Tanveer Altaf, Essam H. Ibrahim, Essam H. Ibrahim, Ahmed Ezzat Ahmed, Ahmed Ezzat Ahmed, Mingzheng Duan   +13 more
doaj   +1 more source

Reducing Transfer of Salmonella and Aerobic Mesophilic Bacteria on Melon Rinds Surfaces to Fresh Juice by Washing With Chlorine: Effect of Waiting Period Before Refrigeration of Prepared Juice

Frontiers in Sustainable Food Systems, 2018
Cantaloupes, honeydew melons and watermelons inoculated with Salmonella cocktail at 4.5, 3.8, and 3.2 log10 CFU/cm2, respectively, were sanitized with 200 ppm chlorine before rinds removal, cutting, and juice preparation.
Dike O. Ukuku, Sudarsan Mukhopadhyay, Modesto Olanya   +2 more
doaj   +1 more source

(dme)MCl_3(NNPh_2) (dme= dimethoxyethane; M= Nb, Ta): A Versatile Synthon for [Ta═NNPh_2] Hydrazido(2-) Complexes [PDF]

, 2010
Complexes (dme)TaCl_3(NNPh_2) (1) and (dme)NbCl_3(NNPh_2) (2) (dme =1,2-dimethoxyethane) were synthesized from MCl5 and diphenylhydrazine via a Lewis-acid assisted dehydrohalogenation reaction. Monomeric 1 has been characterized by X-ray, IR, UV−vis, ^(1)
Bercaw, John E., Tonks, Ian A.
core   +1 more source

The Comparison of Doxycycline Residue in the Meat of Broiler Chickens Administered in Feed and Water

Media Peternakan, 2011
The purpose of this research was to investigate the effect of doxycycline (a tetracycline derivative) administered at disease-prevention dose given daily in the feed and drinking water on the residue level in the broiler-chicken meat.
A. D. Wijayanti, Wihandoyo, A. W. Rosetyadewi   +2 more
doaj  

The Catalytic Role of Glutamate 151 in the Leucine Aminopeptidase from \u3cem\u3eAeromonas proteolytica\u3c/em\u3e [PDF]

, 2004
Glutamate 151 has been proposed to act as the general acid/base during the peptide hydrolysis reaction catalyzed by the co-catalytic metallohydrolase from Aeromonas proteolytica (AAP).
Bzymek, Krzysztof P., Holz, Richard C.
core   +1 more source

Valorization of an Industrial Pollutant Residue as a Teaching Tool: Extraction of Al³⁺ from Aluminum Saline Slag

ChemEngineering
Aluminum is the most used non–ferrous metal. It can be recycled saving several natural resources, but generates large amounts of residues with a complex composition—still containing a valuable amount of aluminum, although also including contaminant ...
Alejandro Jiménez, Raquel Trujillano, Sophia Korili, Antonio Gil, Miguel Ángel Vicente   +4 more
doaj   +1 more source

β-Blockers in the Environment: Challenges in Understanding Their Persistence and Ecological Impact

Molecules
β-blockers are among the most highly consumed cardiovascular drugs worldwide, resulting in their classification as persistent and bioactive pharmaceutical pollutants.
Anna Dzionek
doaj   +1 more source