The accurate determination of nanoparticles (NPs) content in biological samples is of great interest for studying its potential impacts on health. This paper describes a method validation process for Ti determination from TiO2 NPs in biological matrixes using a closed-vessel microwave digestion with a mixture of 3 mL of HNO3 and 0.4 mL of HF and a detection by quadrupole inductively coupled pla...

Stable carbon isotope analysis in tooth enamel is a well-established approach to infer C3 and C4 dietary composition in fossil mammals. The bulk of past work has been conducted on large herbivorous mammals. One important finding is that their dietary habits of fossil large mammals track the late Miocene ecological shift from C3 forest and woodland to C4 savannah. However, few studies on carbon ...

Wetland loss along the Louisiana Gulf coast and excessive nitrate loading into the Gulf of Mexico are interrelated environmental problems. Nitrate removal by soil denitrification activity was studied in a ponded freshwater marsh receiving diverted Mississippi River water for the purpose of reversing or slowing wetland loss. Labeled (15)N-nitrate was applied at 3.8 g N m(-2) into four replicate ...

The article considers the development of musical and cultural life in largest centres Southern Ukraine late 19th – early 20th century: Kherson, Nikolaev Odessa. author pays special attention to specific features region determined by its geographical location multi-ethnic population. In many provincial district Ukraine, developed due no small way involvement musically gifted foreigners: Czech Ge...

Stable hydrogen isotope ratios of plant lignin methoxyl groups have recently been shown to record the hydrogen isotopic composition of meteoric water. Here we extend this technique towards tracing water source variations across a saltwater to freshwater gradient in a coastal, subtropical forest ecosystem. We measure the hydrogen isotopic composition of xylem water (dDxw) and methoxyl hydrogen (...

A sequential degradation scheme, involving solvent extraction, alkaline saponification and catalytic hydropyrolysis (open-system pyrolysis assisted by high hydrogen gas pressure), was used for recovering both free and covalently-bound lipid organic compounds from two archaeological ceramic sherds sampled from the interior of cooking vessels and from a ceramic control sample used for cooking mod...

UNLABELLED We recently reported that the greatest distinguishing feature between eccentric (ECC) and concentric (CON) muscle loading lays in architectural adaptations: ECC favors increases in fascicle length (Lf), associated with distal vastus lateralis muscle (VL) hypertrophy, and CON increases in pennation angle (PA). Here, we explored the interactions between structural and morphological rem...

Background: Preand/or probiotics can cause changes in the ecological balance of intestinal microbiota and hence influence the microbial metabolic activities. In the present study, the 30 influence of oligofructose-enriched inulin (OF-IN), Lactobacillus casei Shirota (LacS) and Bifidobacterium breve Yakult on the colonic fate of NH3 and p-cresol was investigated. Methods: A randomized, placebo-c...

Docosahexaenoic acid (DHA) is important for infant development. The DHA transfer from maternal diet into human milk has not been investigated in detail. We studied the effects of DHA supplementation on the fatty acid composition of human milk and the secretion of dietary (13)C-labeled fatty acids, including DHA, into human milk. Ten lactating women were randomized to consume, from 4 to 6 weeks ...