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Trace minerals

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https://www.readbyqxmd.com/read/28728408/evaluation-of-trace-mineral-source-and-preharvest-deletion-of-trace-minerals-from-finishing-diets-on-tissue-mineral-status-in-pigs
#1
Y L Ma, Merlin D Lindemann, Sharon F Webb, Gregg Rentfrow
Objective: An experiment was conducted to evaluate dietary supplemental trace mineral source and deletion on mineral content in tissues. Methods: Weanling crossbred pigs [n = 144; 72 barrows and 72 gilts; body weight (BW) = 7.4 ± 1.05 kg] were used. A basal diet was prepared, and trace mineral premix containing either inorganic (ITM) or organic (OTM) trace minerals (Cu, Fe, Mn, and Zn) was added to the basal diet. Pigs were blocked by sex and BW and randomly allotted to 24 pens for a total of 6 pigs per pen, and fed a diet containing either ITM or OTM supplemented at the 1998 NRC requirement estimates for each of 5 BW phases (Phase I to V) from 7 to 120 kg...
July 6, 2017: Asian-Australasian Journal of Animal Sciences
https://www.readbyqxmd.com/read/28711007/carbon-dynamics-in-a-late-quaternary-age-coastal-limestone-aquifer-system-undergoing-saltwater-intrusion
#2
Eliza Bryan, Karina T Meredith, Andy Baker, Martin S Andersen, Vincent E A Post
This study investigates the inorganic and organic aspects of the carbon cycle in groundwaters throughout the freshwater lens and transition zone of a carbonate island aquifer and identifies the transformation of carbon throughout the system. We determined (14)C and (13)C carbon isotope values for both DIC and DOC in groundwaters, and investigated the composition of DOC throughout the aquifer. In combination with hydrochemical and (3)H measurements, the chemical evolution of groundwaters was then traced from the unsaturated zone to the deeper saline zone...
July 12, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28710689/assessment-of-major-ions-and-trace-elements-in-groundwater-supplied-to-the-monterrey-metropolitan-area-nuevo-le%C3%A3-n-mexico
#3
Abrahan Mora, Jürgen Mahlknecht, Laura Rosales-Lagarde, Arturo Hernández-Antonio
The Monterrey metropolitan area (MMA) is the third greatest urban area and the second largest economic city of Mexico. More than four million people living in this megacity use groundwater for drinking, industrial and household purposes. Thus, major ion and trace element content were assessed in order to investigate the main hydrochemical properties of groundwater and determine if groundwater of the area poses a threat to the MMA population. Hierarchical cluster analysis using all the groundwater chemical data showed five groups of water...
August 2017: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/28695732/reduction-and-simultaneous-removal-of-99-tc-and-cr-by-fe-oh-2-s-mineral-transformation
#4
Sarah A Saslow, Wooyong Um, Carolyn I Pearce, Mark H Engelhard, Mark E Bowden, Wayne Lukens, Ian I Leavy, Brian J Riley, Dong-Sang Kim, Michael J Schweiger, Albert A Kruger
Technetium (Tc) remains a priority remediation concern due to persistent challenges, including mobilization due to rapid reoxidation of immobilized Tc, and competing comingled contaminants, e.g., Cr(VI), that inhibit Tc(VII) reduction and incorporation into stable mineral phases. Here Fe(OH)2(s) is investigated as a comprehensive solution for overcoming these challenges, by serving as both the reductant, (Fe(II)), and the immobilization agent to form Tc-incorporated magnetite (Fe3O4). Trace metal analysis suggests removal of Tc(VII) and Cr(VI) from solution occurs simultaneously; however, complete removal and reduction of Cr(VI) is achieved earlier than the removal/reduction of comingled Tc(VII)...
July 20, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28688247/lithology-and-mineralogy-recognition-from-geochemical-logging-tool-data-using-multivariate-statistical-analysis
#5
Ahmed Amara Konaté, Huolin Ma, Heping Pan, Zhen Qin, Hafizullah Abba Ahmed, N'dji Dit Jacques Dembele
The availability of a deep well that penetrates deep into the Ultra High Pressure (UHP) metamorphic rocks is unusual and consequently offers a unique chance to study the metamorphic rocks. One such borehole is located in the southern part of Donghai County in the Sulu UHP metamorphic belt of Eastern China, from the Chinese Continental Scientific Drilling Main hole. This study reports the results obtained from the analysis of oxide log data. A geochemical logging tool provides in situ, gamma ray spectroscopy measurements of major and trace elements in the borehole...
June 29, 2017: Applied Radiation and Isotopes
https://www.readbyqxmd.com/read/28669478/the-marine-sedimentary-record-of-natural-and-anthropogenic-contribution-from-the-sulcis-iglesiente-mining-district-sardinia-italy
#6
Elena Romano, Giovanni De Giudici, Luisa Bergamin, Stefano Andreucci, Chiara Maggi, Giancarlo Pierfranceschi, Maria Celia Magno, Antonella Ausili
Intensive exploitation of base metal deposits in the Sulcis-Iglesiente district (Sardinia, Italy), lasted from the 1850s to the 1990s, determined a high environmental impact on the coastal area, but the effects on marine environment have never been investigated. A marine sediment core, dated with (14)C, was characterized for grain size, chemical and mineralogical composition, in order to reconstruct the sedimentary history of the area and to assess the environmental impact of mining. The comparison of chemical and mineralogical characteristics of recent sediments with those of pre-industrial age allowed discriminating the real anthropogenic impact from the natural metal enrichment...
June 29, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/28669062/comparative-efficacy-of-oestrus-synchronization-protocols-in-buffalo-bubalus-bubalis
#7
R Rathore, R K Sharma, S K Phulia, V Mudgal, A Jerome, S P S Ghuman, I Singh
This study was conducted to test the efficacy of gonadotropic hormone (GnRH)-based synchronization protocols (Ovsynch, Heatsynch, and Ovsynch Plus) in buffaloes under field condition. Based on anamnesis and transrectal palpation twice at 10-day interval and serum progesterone (P4) concentration, 150 anoestrous buffaloes and delayed pubertal heifers were selected to induce oestrus using GnRH-based protocols. These selected animals were randomly divided into three groups: group I: Ovsynch (n = 50), group II: Heatsynch (n = 50), and group III: Ovsynch Plus (n = 50) regimen...
July 1, 2017: Tropical Animal Health and Production
https://www.readbyqxmd.com/read/28656569/proximate-composition-and-mineral-contents-in-the-body-wall-of-two-species-of-sea-cucumber-from-oman-sea
#8
Noora Barzkar, Gilan Attaran Fariman, Ali Taheri
The proximate composition and mineral contents of Stichopus horrens and Holothuria arenicola from Chabahar Bay were analyzed and investigated. During the present study, we aimed to demonstrate the nutritive value. The approximate percent composition of moisture, protein, fat, and ash were 92.8, 3.47, 0.4, and 3.33% in S. horrens and 93, 4.4, 0.6, and 2% in H. arenicola, respectively. Atomic absorption spectrophotometry of the ashes indicated the body wall of two species of sea cucumbers contained higher amounts of both macro minerals (92...
June 27, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28645148/a-soft-environmental-control-effect-of-apatite-doped-with-mineral-traces-in-the-fowl-droppings
#9
M Minamisawa, T Taniai, S Yoshida
Fowl-dropping apatite (Ca10-z[PO4]6-z[OH]2-z) synthesized from carbonized, incinerated fowl droppings contains PO4 and OH groups that are partially substituted by CO32- ions. It shows stronger ion conductivity than commercially available hydroxyapatite in a wide range of temperatures from 23°C to 800°C. Fowl-dropping apatite readily adsorbs NO2 and SO2 gases and, without re-releasing these gases, slowly decomposes them at room temperature under sunlight via ultraviolet-visible (UV-Vis) irradiation. A limited amount of minerals and organics contained in fowl droppings causes light-induced activities in fowl-dropping apatite with a crystal structure that has a developed c face; this initiates excitation-induced atomic transfer on the solid surface derived from PO4 exposed on the c face, which then advances the decomposition reaction...
June 21, 2017: Poultry Science
https://www.readbyqxmd.com/read/28641179/quantitative-study-of-the-proportion-of-the-pore-volume-of-human-fluorotic-enamel-filled-by-resin-infiltrant
#10
Frederico Barbosa de Sousa, Isabel Maria Porto Lelis, Regina Célia Bressan Queiroz Figueiredo, Andressa Cavalcanti Pires, Raquel Fernanda Gerlach
AIM: Capillarity theory predicts that the pore volume infiltrated by a liquid in a body with tubular capillaries is directly proportional to the capillary radius. The expected volume available for infiltration is the loosely bound water volume, which can be related to the capillary radii. We tested the hypothesis that the proportion of the pore volume infiltrated by resin infiltrant (Vratio(resin)) is correlated and agrees with the proportion of the pore volume with loosely bound water ( [Formula: see text] )...
June 15, 2017: Archives of Oral Biology
https://www.readbyqxmd.com/read/28639018/test-of-aerobic-tce-degradation-by-willows-salix-viminalis-and-willows-inoculated-with-tce-cometabolizing-strains-of-burkholderia-cepacia
#11
Lauge Peter Westergaard Clausen, Mette Martina Broholm, Ulrich Gosewinkel, Stefan Trapp
Trichloroethylene (TCE) is a widespread soil and groundwater pollutant and clean-up is often problematic and expensive. Phytoremediation may be a cost-effective solution at some sites. This study investigates TCE degradation by willows (S. viminalis) and willows inoculated with three strains of B. cepacia (301C, PR1-31 and VM1330-pTOM), using chloride formation as an indicator of dehalogenation. Willows were grown in non-sterile, hydroponic conditions for 3 weeks in chloride-free nutrient solution spiked with TCE...
June 21, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28627187/-is-plasma-selenium-correlated-to-transthyretin-levels-in-critically-ill-patients
#12
Renata G B O N Freitas, Roberto Jose Negrão Nogueira, Silvia Maria Franciscato Cozzolino, Ana Carolina Junqueira Vasques, Matthew Thomas Ferreira, Gabriel Hessel
BACKGROUND: Selenium is an essential trace element, but critically ill patients using total parenteral nutrition (PN) do not receive selenium because this mineral is not commonly offered. Threfore, the eval uation of plasma selenium levels is very important for treating or preventing this deficiency. Recent studies have shown that transthyretin may reflect the selenium intake and could be considered a biomarker. However, this issue is still little explored in the literature. OBJECTIVE: This study aims to investigate the correlation of transthyretin with the plasma selenium of critically ill patients receiving PN...
June 5, 2017: Nutrición Hospitalaria: Organo Oficial de la Sociedad Española de Nutrición Parenteral y Enteral
https://www.readbyqxmd.com/read/28624277/technical-note-at-line-prediction-of-mineral-composition-of-fresh-cheeses-using-near-infrared-technologies
#13
C L Manuelian, S Currò, G Visentin, M Penasa, M Cassandro, C Dellea, M Bernardi, M De Marchi
Milk and dairy products are important sources of macro- and trace elements for human health. However, fresh cheeses usually have a lower mineral content than other cheeses, and this makes mineral prediction more difficult. Although mineral prediction in several food matrices using infrared spectroscopy has been reported in the literature, very little information is available for cheeses. The present study was aimed at developing near-infrared reflectance (NIR, 866-2,530 nm) and transmittance (NIT, 850-1,050 nm) spectroscopy models to predict the major mineral content of fresh cheeses...
June 14, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28620190/formation-of-biphasic-hydroxylapatite-beta-magnesium-tricalcium-phosphate-in-heat-treated-salmonid-vertebrae
#14
Don H Butler, Ruth Shahack-Gross
Ichthyoarchaeological evidence is uncommon at ancient hunter-gatherer sites from various regions and timeframes. This research contributes to the development of microarchaeological techniques useful for identifying fishing economies in situations where classifiable bones are unavailable. Specifically, traces of heat altered bone mineral in domestic hearths are expected to provide markers for discarded fish remains. We used a series of laboratory incineration experiments to characterize the mineralogy of burned salmonid vertebrae...
June 15, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28618665/metal-accumulation-in-soils-derived-from-volcano-sedimentary-rocks-rio-itapicuru-greenstone-belt-northeastern-brazil
#15
Laíse Milena Ribeiro Dos Santos, Thomas Vincent Gloaguen, Francisco de Souza Fadigas, Joselisa Maria Chaves, Tamires Moraes Oliveira Martins
Many countries and some Brazilian regions have defined the guideline values for metals in soils. However, the local geological features may be so heterogeneous that global or even regional guideline values cannot be applied. The Greenstone Belts are worldwide geological formations of vast extension, containing mineralization of various metals (e.g., Au, Cr, Ni, and Ag). Natural concentrations of soils must be known to correctly assess the impact of mining. We studied the soils of the Rio Itapicuru Greenstone Belt (RIGB), of Paleoproterozoic age, sampling at 24 sites (0-0...
June 11, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28616021/mri-analysis-and-clinical-significance-of-lower-extremity-muscle-cross-sectional-area-after-spinal-cord-injury
#16
REVIEW
Robert M Lester, Kori Johnson, Refka E Khalil, Rehan Khan, Ashraf S Gorgey
Shortly after spinal cord injury (SCI), the musculoskeletal system undergoes detrimental changes in size and composition, predominantly below the level of injury. The loss of muscle size and strength, along with increased immobility, predisposes persons with SCI to rapid and severe loss in bone mineral density and other health related consequences. Previous studies have highlighted the significance of measuring thigh muscle cross-sectional area, however, measuring the size and composition of muscles of the lower leg may provide insights on how to decrease the risk of various comorbidities...
May 2017: Neural Regeneration Research
https://www.readbyqxmd.com/read/28609642/micronutrient-deficiencies-after-bariatric-surgery-an-emphasis-on-vitamins-and-trace-minerals
#17
Jayshil J Patel, Manpreet S Mundi, Ryan T Hurt, Bruce Wolfe, Robert G Martindale
Obesity has become a worldwide epidemic with a disproportionate increase in grade III obesity. Bariatric surgery offers an attractive option for sustained weight loss compared with traditional methods such as exercise and diet. Micronutrient deficiencies are common and clinically significant after bariatric surgery. These deficiencies are related to a combination of patient and surgical variables. A thorough understanding of specific micronutrient deficiencies is necessary for early recognition and optimal management...
June 1, 2017: Nutrition in Clinical Practice
https://www.readbyqxmd.com/read/28606542/hydroxyapatite-crystallization-in-shrimp-cephalothorax-wastes-during-subcritical-water-treatment-for-chitin-extraction
#18
Angélica Espíndola-Cortés, Rosario Moreno-Tovar, Lauro Bucio, Miquel Gimeno, José Luis Ruvalcaba-Sil, Keiko Shirai
The extraction of calcareous chitin from shrimp cephalothorax was successfully achieved using a subcritical water treatment to attain a deproteinization up to 96%. The treatments also increased the crystalline domain size in the α-chitin fibers. An experimental design of Taguchi allowed the optimization of experiments. The macroelements identified in all samples were Ca, P, S, K, Cl and Al, whereas Cr, Mn, Fe, Ni, Cu, Zn, Br and Sr were also detected as microelements. The assigned crystalline phases by XRD were α-chitin, calcite, HAP and traces of quartz...
September 15, 2017: Carbohydrate Polymers
https://www.readbyqxmd.com/read/28603080/a-novel-auditory-ossicles-membrane-and-the-development-of-conductive-hearing-loss-in-dmp1-null-mice
#19
Kun Lv, Haiyang Huang, Xing Yi, Mark E Chertoff, Chaoyuan Li, Baozhi Yuan, Robert J Hinton, Jian Q Feng
Genetic mouse models are widely used for understanding human diseases but we know much less about the anatomical structure of the auditory ossicles in the mouse than we do about human ossicles. Furthermore, current studies have mainly focused on disease conditions such as osteomalacia and rickets in patients with hypophosphatemia rickets, although the reason that these patients develop late-onset hearing loss is unknown. In this study, we first analyzed Dmp1 lac Z knock-in auditory ossicles (in which the blue reporter is used to trace DMP1 expression in osteocytes) using X-gal staining and discovered a novel bony membrane surrounding the mouse malleus...
June 8, 2017: Bone
https://www.readbyqxmd.com/read/28600726/the-influence-of-physicochemical-parameters-on-bioaccessibility-adjusted-hazard-quotients-for-copper-lead-and-zinc-in-different-grain-size-fractions-of-urban-street-dusts-and-soils
#20
Sharareh Dehghani, Farid Moore, Luba Vasiluk, Beverley A Hale
When the hazard quotient for ingestion (HQI) of a trace element in soil and dust particles is adjusted for the element's bioaccessibility, the HQI is typically reduced as compared to its calculation using pseudo-total element concentration. However, those studies have mostly used bulk particles (<2 mm or <250 µm), and the reduction in HQI when expressed as bioaccessible metal may not be similar among particle size fractions, the possibility probed by the present study of street dusts and soils collected in Tehran...
June 9, 2017: Environmental Geochemistry and Health
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