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Trace minerals

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https://www.readbyqxmd.com/read/29021996/characterisation-of-mineral-deposition-systems-associated-with-rock-art-in-the-kimberley-region-of-northwest-australia
#1
Helen Green, Andrew Gleadow, Damien Finch
This data article contains mineralogical and chemical data from mineral accretions sampled from rock art shelters in the Kimberley region of north west Australia. The accretions were collected both on and off pigment and engraved rock art of varying styles observed in the Kimberley with an aim of providing a thorough understanding of the formation and preservation of such materials in the context of dating [1]. This contribution includes processed powder X-ray Diffraction data, Scanning Electron Microscopy energy dispersive spectroscopy data, and Laser Ablation ICP-MS trace element mapping data...
October 2017: Data in Brief
https://www.readbyqxmd.com/read/29017111/origin-and-spatial-distribution-of-metals-in-moss-samples-in-albania-a-hotspot-of-heavy-metal-contamination-in-europe
#2
Pranvera Lazo, Eiliv Steinnes, Flora Qarri, Shaniko Allajbeu, Sonila Kane, Trajce Stafilov, Marina V Frontasyeva, Harry Harmens
This study presents the spatial distribution of 37 elements in 48 moss samples collected over the whole territory of Albania and provides information on sources and factors controlling the concentrations of elements in the moss. High variations of trace metals indicate that the concentrations of elements are affected by different factors. Relations between the elements in moss, geochemical interpretation of the data, and secondary effects such as redox conditions generated from local soil and/or long distance atmospheric transport of the pollutants are discussed...
September 28, 2017: Chemosphere
https://www.readbyqxmd.com/read/28992989/fully-compatible-and-ultra-sensitive-micellar-electrokinetic-chromatography-tandem-mass-spectrometry-using-sheathless-porous-tip-interfacing
#3
David Moreno-González, Rob Haselberg, Laura Gámiz-Gracia, Ana M García-Campaña, Gerhardus J de Jong, Govert W Somsen
The on-line coupling of micellar electrokinetic chromatography and mass spectrometry (MEKC-MS) is often hampered by incompatibility problems leading to reduced separation performance and unfavorable limits of detection (LODs). Here we propose a new selective and highly sensitive MEKC-MS/MS method employing a sheathless porous-tip interface in combination with a micellar phase comprised of semi-volatile surfactant molecules. Carbamate pesticides (CRBs) were selected as representative model compounds being neutral toxic pollutants potentially present at trace levels in environmental water samples...
October 3, 2017: Journal of Chromatography. A
https://www.readbyqxmd.com/read/28992013/effect-of-trace-mineral-source-on-mineral-status-and-performance-of-beef-steers-fed-low-or-high-sulfur-diets
#4
S J Hartman, O N Genther-Schroeder, S L Hansen
A 2 × 2 factorial assessed the effect of trace mineral (TM) sources fed within low- or high-S diets on the mineral status and performance of cattle. Angus crossbred steers ( = 48; 6/pen) were blocked by BW (316 ± 16.6 kg), assigned to low-S (0.27%; LS) or high-S (0.54%; HS; added as CaSO) diets, and supplemented TM at 10 mg Cu, 30 mg Zn, and 20 mg Mn/kg DM from hydroxy (HYD; IntelliBond; Micronutrients USA LLC, Indianapolis, IN) or inorganic (sulfates; ING) sources ( = 12 steers/treatment). Steers were fed corn silage and corn-based diets via GrowSafe bunks in the growing period (GP; 84 d) and finishing period (FP; 77 d), respectively...
September 2017: Journal of Animal Science
https://www.readbyqxmd.com/read/28992004/the-effects-of-copper-source-and-concentration-on-growth-performance-carcass-characteristics-and-pen-cleanliness-in-finishing-pigs
#5
K F Coble, J M DeRouchey, M D Tokach, S S Dritz, R D Goodband, J C Woodworth, J L Usry
A total of 1,143 pigs (PIC 337 × 1050, initially 25.1 ± 0.03 kg BW) were used in a 111-d study to determine the effects of copper sulfate (CuSO; Prince Agri-Products, Quincy, IL) or tribasic copper chloride (TBCC; IntelliBond C; Micronutrients, Indianapolis, IN) on growth performance, carcass characteristics, and pen cleanliness. Pens of pigs were allotted to 1 of 6 dietary treatments, balanced on average pen weight in a randomized complete block design with 25 to 28 pigs per pen and 7 replications per treatment...
September 2017: Journal of Animal Science
https://www.readbyqxmd.com/read/28991996/effect-of-trace-mineral-source-on-mineral-status-and-performance-of-beef-steers-fed-low-or-high-sulfur-diets
#6
S J Hartman, O N Genther-Schroeder, S L Hansen
A 2 × 2 factorial assessed the effect of trace mineral (TM) sources fed within low- or high-S diets on the mineral status and performance of cattle. Angus crossbred steers ( = 48; 6/pen) were blocked by BW (316 ± 16.6 kg), assigned to low-S (0.27%; LS) or high-S (0.54%; HS; added as CaSO) diets, and supplemented TM at 10 mg Cu, 30 mg Zn, and 20 mg Mn/kg DM from hydroxy (HYD; IntelliBond; Micronutrients USA LLC, Indianapolis, IN) or inorganic (sulfates; ING) sources ( = 12 steers/treatment). Steers were fed corn silage and corn-based diets via GrowSafe bunks in the growing period (GP; 84 d) and finishing period (FP; 77 d), respectively...
September 2017: Journal of Animal Science
https://www.readbyqxmd.com/read/28990145/organic-horizon-and-mineral-soil-mercury-along-three-clear-cut-forest-chronosequences-across-the-northeastern-usa
#7
Justin B Richardson, Chelsea L Petrenko, Andrew J Friedland
Mercury (Hg) is a globally distributed pollutant trace metal that has been increasing in terrestrial environments due to rising anthropogenic emissions. Vegetation plays an important role in Hg sequestration in forested environments, but increasing tree removal for biofuels and wood products may affect this process. The long-term effect of clear-cutting on forest soil Hg remains uncertain, since most studies are limited to measuring changes for < 10 years following a single harvest event. The chronosequence approach, which substitutes space for time using forest stands of different ages since clear-cutting, allows for investigation of processes occurring over decades to centuries...
October 8, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28978343/dietary-food-patterns-and-glucose-insulin-homeostasis-a-cross-sectional-study-involving-24-182-adult-americans
#8
Mohsen Mazidi, Andre Pascal Kengne, Dimitri P Mikhailidis, Peter P Toth, Kausik K Ray, Maciej Banach
AIM: To investigate the association of major dietary patterns with glucose and insulin homeostasis parameters in a large American sample. The association between dietary patterns (DP) derived via principal components analysis (PCA), with glucose/insulin homeostasis parameters was assessed. The likelihood of insulin resistance (IR) across the DPs quarters was also explored. METHOD: The United States National Health and Nutrition Examination Survey (NHANES) participants during 2005-2012 were included if they underwent measurement of dietary intake as well as glucose and insulin homeostasis parameters...
October 4, 2017: Lipids in Health and Disease
https://www.readbyqxmd.com/read/28974814/characteristics-of-normal-and-waxy-corn-physicochemical-protein-secondary-structure-dough-rheology-and-chapatti-making-properties
#9
Sheetal Thakur, Narpinder Singh, Amritpal Kaur
The physicochemical, protein secondary structure, dough rheological and chapatti making properties of normal and waxy corn types were evaluated. Waxy corn grains showed the highest L* and b* value, while red-pigmented corn grains had the highest a* value. Higher accumulation of K, Mg, Na and Ca minerals in corn was recorded, while Cu, Mn, Fe and Zn were present in trace. Meal prepared from waxy corn had higher L*, a* and b* values as well as ash, protein and fat content. A significant decrease in various mixograph parameters was observed with increase in water level during dough development...
September 2017: Journal of Food Science and Technology
https://www.readbyqxmd.com/read/28970480/metals-promote-sequences-of-the-reverse-krebs-cycle
#10
Kamila B Muchowska, Sreejith J Varma, Elodie Chevallot-Beroux, Lucas Lethuillier-Karl, Guang Li, Joseph Moran
The reverse tricarboxylic acid (rTCA) cycle (also known as the reverse Krebs cycle) is a central anabolic biochemical pathway whose origins are proposed to trace back to geochemistry, long before the advent of enzymes, RNA or cells, and whose imprint remains intimately embedded in the structure of core metabolism. If it existed, a primordial version of the rTCA cycle would necessarily have been catalysed by naturally occurring minerals at the earliest stage of the transition from geochemistry to biochemistry...
October 2, 2017: Nature ecology & evolution
https://www.readbyqxmd.com/read/28965602/intestinal-fate-of-dietary-zinc-and-copper-postprandial-net-fluxes-of-these-trace-elements-in-portal-vein-of-pigs
#11
J Jacques Matte, Christiane L Girard, Frédéric Guay
In pig, the assessment of bioavailability of dietary trace minerals with classical approaches such as relative bioavailability estimates or digestive tract balances have often generated inconsistent responses. In the present study, net portal-drained-viscera fluxes were monitored after a meal to assess intestinal absorption of zinc (Zn) or copper (Cu) according to dietary sources and levels of these trace minerals. Twelve pigs were surgically equipped with portal and carotid catheters and a portal ultrasonic flow probe for 12-h postprandial measurements...
December 2017: Journal of Trace Elements in Medicine and Biology
https://www.readbyqxmd.com/read/28964522/outdoor-grazing-of-dairy-cows-on-pasture-versus-indoor-feeding-on-total-mixed-ration-effects-on-gross-composition-and-mineral-content-milk-during-lactation
#12
Arunima Gulati, Norann Galvin, Eva Lewis, Deirdre Hennessy, Michael O'Donovan, Jennifer J McManus, Mark A Fenelon, Timothy P Guinee
The influence of feeding system and lactation period on the gross composition, macroelements (Ca, P, Mg, and Na), and trace elements (Zn, Fe, Cu, Mo, Mn, Se, and Co) of bovine milk was investigated. The feeding systems included outdoor grazing on perennial ryegrass pasture (GRO), outdoor grazing on perennial ryegrass and white clover pasture (GRC), and indoors offered total mixed ration (TMR). Sixty spring-calving Holstein Friesian dairy cows were assigned to 3 herds, each consisting of 20 cows, and balanced with respect to parity, calving date, and pre-experimental milk yield and milk solids yield...
September 27, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28947146/recirculation-of-biomass-ashes-onto-forest-soils-ash-composition-mineralogy-and-leaching-properties
#13
A Maresca, J Hyks, T F Astrup
In Denmark, increasing amounts of wood ashes are generated from biomass combustion for energy production. The utilisation of ashes on top of forest soil for liming purposes has been proposed asan alternative to landfilling. Danish wood ash samples were collected and characterised with respect to chemical composition, mineralogy and leaching properties (batch leaching at L/S 2 and 10L/kg, and pH-dependent leaching at 10L/kg). Large variations in the ash liming properties were observed (ANC7.5: 1.8-6.4meqH(+)/g), indicating that similar soil application dosages may result in different liming effects...
September 22, 2017: Waste Management
https://www.readbyqxmd.com/read/28946330/chemometric-authentication-of-the-organic-status-of-milk-on-the-basis-of-trace-element-content
#14
R Rodríguez-Bermúdez, M López-Alonso, M Miranda, R Fouz, I Orjales, C Herrero-Latorre
The objective of this study was to develop a method for authenticating organic milk samples in North Spain on the basis of its trace mineral composition. Fourteen elements in 98 samples were determined by inductively coupled plasma mass spectrometry. Although concentrations of Co, Cr, Cu, I, Se and Zn where statistically higher in conventional milk and As in organic, none of these elements by itself was able to discriminate between organic and conventional milk. The chemical data was examined by principal component analysis and cluster analysis, revealing a natural separation between organic and conventional milk...
February 1, 2018: Food Chemistry
https://www.readbyqxmd.com/read/28942754/can-we-improve-the-nutritional-quality-of-meat
#15
Nigel D Scollan, Eleri M Price, Sarah A Morgan, Sharon A Huws, Kevin J Shingfield
The nutritional value of meat is an increasingly important factor influencing consumer preferences for poultry, red meat and processed meat products. Intramuscular fat content and composition, in addition to high quality protein, trace minerals and vitamins are important determinants of nutritional value. Fat content of meat at retail has decreased substantially over the past 40 years through advances in animal genetics, nutrition and management and changes in processing techniques. Evidence of the association between diet and the incidence of human non-communicable diseases has driven an interest in developing production systems for lowering total SFA and trans fatty acid (TFA) content and enrichment of n-3 PUFA concentrations in meat and meat products...
September 25, 2017: Proceedings of the Nutrition Society
https://www.readbyqxmd.com/read/28942205/the-unintended-consequences-of-community-verifications-for-performance-based-financing-in-burkina-faso
#16
Anne-Marie Turcotte-Tremblay, Idriss Ali Gali-Gali, Manuela De Allegri, Valéry Ridde
Performance-based financing (PBF) is being widely implemented to improve healthcare services in Africa. An essential component of PBF involves conducting community verifications, wherein investigators from local associations attempt to trace samples of patients. Community surveys are administered to patients to verify whether healthcare workers reported fictitious services to increase their revenue. At the same time, client satisfaction surveys are administered to assess whether patients are satisfied with the services received...
September 8, 2017: Social Science & Medicine
https://www.readbyqxmd.com/read/28941847/role-of-essential-trace-elements-in-tuberculosis-infection-a-review-article
#17
REVIEW
Aliyeh Sargazi, Roghayeh Afsar Gharebagh, Alireza Sargazi, Halimeh Aali, Hamid Owaysee Oskoee, Zahra Sepehri
Malnutrition is one of the risk factors in tuberculosis (TB) infection. Mineral levels perturbation is seen in patients with TB. Moreover there are some strategies to starve pathogens of essential metals. Here we decided to conclude association between some essential elements and TB. Copper, calcium and iron are essential for hosts' immune system although calcium and iron are necessary for Mycobacterium tuberculosis vitality. Changing these elements alongside with anti-TB therapy is suggested for better treatment outcomes...
October 2017: Indian Journal of Tuberculosis
https://www.readbyqxmd.com/read/28934332/end-member-modelling-as-a-tool-for-climate-reconstruction-an-eastern-mediterranean-case-study
#18
Sarah Beuscher, Stefan Krüger, Werner Ehrmann, Gerhard Schmiedl, Yvonne Milker, Helge Arz, Hartmut Schulz
The Eastern Mediterranean Sea is a sink for terrigenous sediments from North Africa, Europe and Asia Minor. Its sediments therefore provide valuable information on the climate dynamics in the source areas and the associated transport processes. We present a high-resolution dataset of sediment core M40/4_SL71, which was collected SW of Crete and spans the last ca. 180 kyr. We analysed the clay mineral composition, the grain size distribution within the silt fraction, and the abundance of major and trace elements...
2017: PloS One
https://www.readbyqxmd.com/read/28930696/impact-of-a-newly-formed-periglacial-environment-and-other-factors-on-fresh-water-chemistry-at-the-western-shore-of-admiralty-bay-in-the-summer-of-2016-king-george-island-maritime-antarctica
#19
Małgorzata Szopińska, Danuta Szumińska, Robert Józef Bialik, Stanisław Chmiel, Joanna Plenzler, Żaneta Polkowska
This study provides a comprehensive analysis of the inorganic chemistry of flowing water at the western shore of Admiralty Bay. In the water samples, ions, and major and trace metals (and B) were detected and quantified. Additionally, the parameters of pH, specific electrolytic conductivity (SEC25) and total organic carbon (TOC) were determined. Moreover, multivariate data set was created and Principal Component Analysis (PCA) was performed. Generally, the water has low total content of the measured mineral constituents <100mgL(-1)...
September 17, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28929448/acid-rock-drainage-in-nevado-pastoruri-glacier-area-huascar%C3%A3-n-national-park-per%C3%A3%C2%BA-hydrochemical-and-mineralogical-characterization-and-associated-environmental-implications
#20
Esther Santofimia, Enrique López-Pamo, Edwin Julio Palomino, Elena González-Toril, Ángeles Aguilera
The generation of acid rock drainage (ARD) was observed in an area of Nevado Pastoruri as a result of the oxidative dissolution of pyrite-rich lutites and sandstones. These ARDs are generated as abundant pyrite becomes exposed to atmospheric conditions as a result of glacier retreat. The proglacial zone contains lagoons, springs, streams and wetlands, scant vegetation, and intense fluvioglacial erosion. This work reports a comprehensive identification and the results of sampling of the lagoons and springs belonging to the microbasin, which is the headwaters of the Pachacoto River, as well as mapping results based on the hydrochemical data obtained in our study...
September 19, 2017: Environmental Science and Pollution Research International
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