Metal-containing Particulate Matter and Associated Reduced Olfactory Identification Ability in Children from an Area of High Atmospheric Exposure in Mexico City.
Abstract Air pollution has been linked to poor olfactory function in human adults. Among pollutants, particulate matter (PM) is especially relevant, as it may contain toxic metal ions that can reach the brain via olfactory pathways. Our purpose was to investigate the relation between atmospheric PM and olfactory identification performance in children. Using a validated method, we tested the olfactory identification performance of 120 children, 6-12 years old, from two locations in Mexico City; a focal group (n = 60) from a region with high PM levels, and a control group of equal size and similar socioeconomic leve...
Source: Chemical Senses - November 19, 2019 Category: Biochemistry Authors: Guarneros M, Rivera CL, Gonsebatt ME, Alcaraz-Zubeldia M, Hummel T, Schriever VA, Valdez B, Hudson R Tags: Chem Senses Source Type: research

Potential effect of the microbial fermented feed utilization on physicochemical traits, antioxidant enzyme and trace mineral analysis in rabbit meat
Total of 72, 6  weeks old male New Zealand white rabbits were maintained in the experimental shed and microbial fermented feed (Hybrid pennisetum silage) offered. After 42  days the rabbit was slaughter and hind leg meat samples stored in 4°C, and subjected of 1 gm of ice meat at 0.9% sodium chloride buffer, and centrifuged at 9,000 g for 10  s at 4°C for the determination of antioxidant enzymes and mineral. AbstractThe study investigated the potential effect of the microbial fermented feed utilization on physicochemical traits, antioxidant enzyme and trace mineral analysis in rabbit meat. ...
Source: Journal of Animal Physiology and Animal Nutrition - November 19, 2019 Category: Zoology Authors: Assar Ali Shah, Zhiwei Liu, Chen Qian, Juanzi Wu, Nighat Sultana, Xiaoxian Zhong Tags: ORIGINAL ARTICLE Source Type: research

Iron loading and secondary multi-trace element deficiency in a dairy herd fed silage grass grown on land fertilized with sewage sludge.
ez-Alonso M Abstract Recycling sewage sludge by applying it to agricultural land is strategically important in the European Union and is regulated by Directive 86/278/EEC, aimed at protecting the soil and humans from the presence of unwanted substances. However, because of the ruminant feeding habits, there is a risk that animals grazed on pasture or fed crops grown on land treated in this way may ingest biosolids adhered to foliage and/or on the top soil. This paper describes an episode of toxicity in a dairy herd consuming silage from a field fertilized with sewage sludge produced in a wastewater treatment plant...
Source: Environmental Science and Pollution Research International - November 19, 2019 Category: Environmental Health Authors: Miranda M, Méndez L, Pereira V, Minervino AHH, López-Alonso M Tags: Environ Sci Pollut Res Int Source Type: research

Hydrothermal synthesis of needle-shaped manganese oxide nanoparticle for superior adsorption of thallium(I): characterization, performance, and mechanism study.
In this study, manganese oxide nanoparticles were synthesized through a simple hydrothermal method and applied for the removal of thallium(I). The adsorbent was composed of numerous needle-like nanorods and had an average volume diameter of 230 nm after heat-drying procedure. The crystal form of adsorbent was determined as α-MnO2. The adsorbent exhibited a much faster adsorption rate than most of previously reported adsorbent, achieving over 66.4% of equilibrium adsorption capacity in the first 10 min. The adsorption process was found to be highly affected by solution pH and higher than 100 mg/g of adsorption capacit...
Source: Environmental Science and Pollution Research International - November 19, 2019 Category: Environmental Health Authors: Ren Z, Wu W, Yu L, Yu Y Tags: Environ Sci Pollut Res Int Source Type: research

Reduction of FeII(EDTA)-NO by Mn powder in wet flue gas denitrification technology: stoichiometry, kinetics, and thermodynamics.
Abstract Conversion of FeII(EDTA)-NO or FeIII(EDTA) into FeII(EDTA) is a key process in a wet flue gas denitrification technology with FeII(EDTA) solution. In this work, the stoichiometry, kinetics, and thermodynamics of FeII(EDTA)-NO reduction by Mn powder were investigated. We first studied the FeII(EDTA)-NO reduction and product distribution to speculate a possible stoichiometry of FeII(EDTA)-NO reduction by Mn powder. Then, the effects of major influencing factors, such as pH value, temperature, and Mn concentration, were studied. The pseudo-second-order model was established to describe the FeII(EDTA)-NO redu...
Source: Environmental Science and Pollution Research International - November 19, 2019 Category: Environmental Health Authors: Chen J, He J, Wang X, Hrynsphan D, Wu J, Chen J, Yao J Tags: Environ Sci Pollut Res Int Source Type: research

Potential effect of the microbial fermented feed utilization on physicochemical traits, antioxidant enzyme and trace mineral analysis in rabbit meat
Total of 72, 6  weeks old male New Zealand white rabbits were maintained in the experimental shed and microbial fermented feed (Hybrid pennisetum silage) offered. After 42  days the rabbit was slaughter and hind leg meat samples stored in 4°C, and subjected of 1 gm of ice meat at 0.9% sodium chloride buffer, and centrifuged at 9,000 g for 10  s at 4°C for the determination of antioxidant enzymes and mineral. AbstractThe study investigated the potential effect of the microbial fermented feed utilization on physicochemical traits, antioxidant enzyme and trace mineral analysis in rabbit meat. ...
Source: Journal of Animal Physiology and Animal Nutrition - November 19, 2019 Category: Zoology Authors: Assar Ali Shah, Zhiwei Liu, Chen Qian, Juanzi Wu, Nighat Sultana, Xiaoxian Zhong Tags: ORIGINAL ARTICLE Source Type: research

Manganese oxide nanofoam prepared by pulsed laser deposition for high performance supercapacitor electrodes
Publication date: Available online 18 November 2019Source: Materials Chemistry and PhysicsAuthor(s): J.N. Lacerda, D.F. Franceschini, E.A. Ponzio, Laura M. Esteves, R.B. Guimarães, Y.T. XingAbstractManganese oxide nanofoam has been prepared by pulsed laser deposition, from a metallic Mn target in a 5 Torr pressure O2 buffer atmosphere. The as-prepared samples were heat-treated at different temperatures (300 °C - 500 °C) in air. Both as-deposited and heat-treated samples have a high porosity foam-like morphology, as shown by Field Emission Scanning Electron Microscopy. High Resolution Transmission Electron Mi...
Source: Materials Chemistry and Physics - November 18, 2019 Category: Materials Science Source Type: research

Defect formation and prevention in directed energy deposition of High-Manganese steels and the effect on mechanical properties
Publication date: Available online 16 November 2019Source: Materials Science and Engineering: AAuthor(s): Fabian Kies, Markus B. Wilms, Norbert Pirch, Konda G. Pradeep, Johannes H. Schleifenbaum, Christian HaaseAbstractLaser beam directed energy deposition (DED-LB) differs from other metal additive manufacturing (AM) methods as it allows high building rates and manufacturing of multi-material components via in-situ alloying. This is especially compelling in combination with high-Manganese steel (HMnS), as the mechanical properties can be influenced significantly by tailoring the chemistry-dependent stacking-fault energy (S...
Source: Materials Science and Engineering: A - November 18, 2019 Category: Materials Science Source Type: research

Efficient itaconic acid production by Aspergillus terreus: Overcoming the strong inhibitory effect of manganese
AbstractItaconic acid (IA), a building block platform chemical, is produced industrially byAspergillus terreus utilizing glucose. Lignocellulosic biomass can serve as a low cost source of sugars for IA production. However, the fungus could not produce IA from dilute acid pretreated and enzymatically saccharified wheat straw hydrolyzate even at 100 ‐fold dilution. Furfural, hydroxymethyl furfural and acetic acid were inhibitory, as is typical, but Mn2+ was particularly problematic for IA production. It was present in the hydrolyzate at a level that was 230 times over the inhibitory limit (50  ppb). Recently, it was...
Source: Biotechnology Progress - November 18, 2019 Category: Biotechnology Authors: Badal C. Saha, Gregory J. Kennedy Tags: RESEARCH ARTICLE Source Type: research

Electrospun hydrogen manganese oxide nanofibers as effective adsorbents for Li+ recovery from seawater
Publication date: 25 January 2020Source: Journal of Industrial and Engineering Chemistry, Volume 81Author(s): Yosep Han, Seongmin Kim, Sooyoun Yu, Nosang V. Myung, Hyunjung KimAbstractHighly porous hydrogen manganese oxide (HMO) nanofibers were fabricated by combining electrospinning, calcination, and ion exchanges, and their lithium (Li) recovery performance was systematically compared to other adsorbent types (i.e., nanoparticles and porous microbeads with equivalent properties). In seawater, the HMO nanofibers exhibited an excellent Li+ adsorption capacity (18.8 mg/g) with greater Li+ selectivity over other adsorbe...
Source: Journal of Industrial and Engineering Chemistry - November 16, 2019 Category: Chemistry Source Type: research

Contrasting allocation of magnesium, calcium and manganese in leaves of tea (Camellia sinensis (L.) Kuntze) plants may explain their different extraction efficiency into tea.
, Poschenrieder C Abstract During tea preparation mineral elements are extracted from the dried leaves of tea (Camellia sinensis (L.) Kuntze) plants into the solution. Micro-particle induced X-ray emission was employed to investigate the spatial distribution of magnesium (Mg), calcium (Ca) and manganese (Mn) in the young and old leaves of tea plants grown in the absence and presence of aluminium (Al) in the substrate. Results revealed that in tea leaves the largest concentrations of Mg occurred in the epidermis, of Ca in oxalate crystals and of Mn in epidermis and oxalate crystals; there was a leaf-age effect on t...
Source: Food and Chemical Toxicology - November 16, 2019 Category: Food Science Authors: Pongrac P, Tolrà R, Hajiboland R, Vogel-Mikuš K, Kelemen M, Vavpetič P, Pelicon P, Barceló J, Regvar M, Poschenrieder C Tags: Food Chem Toxicol Source Type: research

Diastereoselective construction of 3-aryl-substituted indolines via annulation of in situ generated p-quinone methides
Org. Biomol. Chem., 2019, Accepted Manuscript DOI: 10.1039/C9OB02351H, CommunicationKun Zhao, Junwei Wang, xiang pan, Lei Zhao, lin zhao, Jian Liu, ying zhi, ai wang, Lihong Hu A highly diastereoselective [4+1] annulation reaction of in situ generated p-quinone methides for the synthesis of 3-aryl-substituted indolines has been developed. Employing commercial manganese dioxide as the oxidant, a seires... The content of this RSS Feed (c) The Royal Society of Chemistry (Source: RSC - Organic and Biomolecular Chemistry)
Source: RSC - Organic and Biomolecular Chemistry - November 15, 2019 Category: Molecular Biology Authors: Kun Zhao Source Type: research

Free-standing cellulose film containing manganese dioxide nanoparticles and its use in discoloration of Indigo Carmine dye
In this study, we report the production of a free-standing film of non-modified cellulose impregnated with 12 wt.% of MnO2 nanoparticles with less than 100 nm in size. The method here described can be applied to the immobilization of different types of nanoparticles. The film was prepared by dissolving microcrystalline cellulose in an ionic liquid followed by its regeneration by adding water to the former solution. Then, the wet film was impregnated with the nanoparticles by dipping it in a MnO2 dispersion. Electron microscopy images revealed manganese dioxide nanoparticles distributed not only at the film su...
Source: Carbohydrate Polymers - November 15, 2019 Category: Biomedical Science Source Type: research

Assessment of copper, iron, zinc and manganese status and speciation in patients with Parkinson’s disease: A pilot study
ConclusionsMetal speciation is significantly affected in serum of PD-patients. These findings are indicative of the potential role of metal metabolism and PD pathogenesis, although the exact mechanisms of such associations require further detailed studies. (Source: Journal of Trace Elements in Medicine and Biology)
Source: Journal of Trace Elements in Medicine and Biology - November 15, 2019 Category: Biochemistry Source Type: research

Formal Co(0), Fe(0), and Mn(0) complexes with NHC and styrene ligation
Publication date: Available online 13 November 2019Source: Chinese Chemical LettersAuthor(s): Wenwei Chen, Qi Chen, Yingjie Ma, Xuebing Leng, Sheng-Di Bai, Liang DengAbstractThe limited knowledge on low-coordinate zero-valent transition-metal species has intrigued great synthetic efforts in developing ligand sets for their stabilization. While the combined ligand set of N-heterocyclic carbene (NHC) with vinylsilanes was the only known ligand system amenable to the stabilization of three-coordinate formal zero-valent cobalt, iron, and manganese complexes, the exploration on other ligands has proved that the ligand set of NH...
Source: Chinese Chemical Letters - November 15, 2019 Category: Chemistry Source Type: research

Manganese co-localizes with calcium and phosphorus in Chlamydomonas acidocalcisomes and is mobilized in manganese-deficient conditions [Plant Biology]
We report here that Chlamydomonas reinhardtii can accumulate manganese (Mn) in proportion to extracellular supply, up to 30-fold greater than its typical quota and with remarkable tolerance. As visualized by X-ray fluorescence microscopy and nanoscale secondary ion MS (nanoSIMS), Mn largely co-localizes with phosphorus (P) and calcium (Ca), consistent with the Mn-accumulating site being an acidic vacuole, known as the acidocalcisome. Vacuolar Mn stores are accessible reserves that can be mobilized in Mn-deficient conditions to support algal growth. We noted that Mn accumulation depends on cellular polyphosphate (polyP) con...
Source: Journal of Biological Chemistry - November 15, 2019 Category: Chemistry Authors: Munkhtsetseg Tsednee, Madeli Castruita, Patrice A. Salome, Aȷay Sharma, Brianne E. Lewis, Stefan R. Schmollinger, Daniela Strenkert, Kristen Holbrook, Marisa S. Otegui, Kaustav Khatua, Sayani Das, Ankona Datta, Si Chen, Christina Ramon, Martina Ral Tags: Cell Biology Source Type: research

Proximate composition, phytochemicals, minerals and antioxidant activities of Vigna mungo L.seed coat.
Abstract Vigna mungo L. seed coat is an agro by-product, available in substantial quantity, with no clear evidence to prove its economic importance. In the present study, the phytochemicals, proximate content, minerals and in vitro antioxidant activities of aqueous (AE), ethanol (EE) and 80% ethanolic extract (80% EE) of Vigna mungo L. seed coat were determined. The total carbohydrate, total protein, crude fibre, ash and moisture content of the seed coat were found to be 27.52±2.71%, 10.07±0.92%, 48.67±1.96%, 4.87±0.29% and 11.03±0.49% respectively. The content of total phenolics...
Source: Bioinformation - November 14, 2019 Category: Bioinformatics Authors: Arockianathan PM, Rajalakshmi K, Nagappan P Tags: Bioinformation Source Type: research

The formability of twinning – induced plasticity steels predicted on the base of Marciniak-Kuczynski theory
Publication date: Available online 13 November 2019Source: Journal of Materials Processing TechnologyAuthor(s): Marilena C. Butuc, Frederic Barlat, Gabriela VinczeAbstractThe purpose of this work is to predict and analyze the formability of twinning – induced plasticity steels through the Marciniak-Kuczynski (MK) theory with emphasis on the solutions for improving the prediction results. The selected constitutive equations involve the Yld00-2d of Barlat et al. (2003) plane stress yield function, the Swift strain–hardening power law and the dislocation density based constitutive model proposed by Kim et al. (201...
Source: Journal of Materials Processing Technology - November 14, 2019 Category: Materials Science Source Type: research

Toenail Metal Exposures in Fishermen from Bodo City, Nigeria.
Abstract We conducted exposure assessment using toenails from 20 fishermen living in Bodo City, a community of the Niger delta region in Nigeria. This community has been affected by over 4000 oil spills and environmental disasters. Fishing is the primary source of food and income for individuals in this community. Previous research in Bodo City found elevated metal levels in fish. Toenails were used as a biomarker to investigate the feasibility for use in risk assessment studies in developing countries. The toenails collected had significantly higher manganese levels (median 5.8 µg/g) and lead levels (m...
Source: Bulletin of Environmental Contamination and Toxicology - November 14, 2019 Category: Environmental Health Authors: Specht AJ, Dickerson AS, Kponee-Shovein KZ, Nkpaa KW, Weisskopf MG Tags: Bull Environ Contam Toxicol Source Type: research

The role of arginase in the microcirculation in cardiovascular disease1.
Abstract In the microcirculation, the exchange of nutrients, water, gas, hormones, and waste takes place, and it is divided into the three main sections arterioles, capillaries, and venules. Disturbances in the microcirculation can be measured using surrogate parameters or be visualized either indirectly or directly.Arginase is a manganese metalloenzyme hydrolyzing L-arginine to urea and L-ornithine. It is located in different cell types, including vascular cells, but also in circulating cells such as red blood cells. A variety of pro-inflammatory factors, as well as interleukins, stimulate increased arginase expr...
Source: Clinical Hemorheology and Microcirculation - November 14, 2019 Category: Hematology Authors: Wernly B, Pernow J, Kelm M, Jung C Tags: Clin Hemorheol Microcirc Source Type: research

Salen ‑manganese complexes for controlling ROS damage: Neuroprotective effects, antioxidant activity and kinetic studies.
Salen‑manganese complexes for controlling ROS damage: Neuroprotective effects, antioxidant activity and kinetic studies. J Inorg Biochem. 2019 Nov 14;203:110918 Authors: Rouco L, Liberato A, Fernández-Trujillo MJ, Máñez A, Basallote MG, Alvariño R, Alfonso A, Botana LM, Maneiro M Abstract A new manganese(III) complex [MnL1(DCA)(H2O)](H2O),1 [H2L1 is the chelating ligand N,N'-bis(2-hydroxy-3-methoxybenzylidene)-1,2-diaminopropane, and DCA is dicyanamide], has been prepared and characterized by different analytical and spectroscopic techniques. The tetragonally elongated oc...
Source: Journal of Inorganic Biochemistry - November 14, 2019 Category: Biochemistry Authors: Rouco L, Liberato A, Fernández-Trujillo MJ, Máñez A, Basallote MG, Alvariño R, Alfonso A, Botana LM, Maneiro M Tags: J Inorg Biochem Source Type: research

Effects of wheat straw derived biochar on cadmium availability in a paddy soil and its accumulation in rice.
In conclusion, biochar application at 40 t ha-1 can effectively reduce the availability of Cd in soil profile, enhance the available Cd enrichment in micro-aggregates, and thus limit the Cd uptake by rice. PMID: 31761591 [PubMed - as supplied by publisher] (Source: Environmental Pollution)
Source: Environmental Pollution - November 14, 2019 Category: Environmental Health Authors: Jing F, Chen C, Chen X, Liu W, Wen X, Hu S, Yang Z, Guo B, Xu Y, Yu Q Tags: Environ Pollut Source Type: research

Hydrothermal synthesis of structurally variable binary CuAl, MnAl and ternary CuMnAl hydroxides for oxytetracycline antibiotic adsorption
Publication date: Available online 12 November 2019Source: Journal of Environmental Chemical EngineeringAuthor(s): Jamiu. O. Eniola, Rajeev Kumar, Awad A. Al-Rashdi, M.A. BarakatAbstractPharmaceuticals are emerging pollutants present mainly in industrial and municipal wastewater. Herein, structurally variable binary and ternary metal hydroxides based on copper, manganese, and aluminum were used for the adsorptive scavenging of the oxytetracycline (OTC) antibiotic. A facile hydrothermal method was used for the synthesis of binary CuAl-hydroxide, MnAl-hydroxide, and ternary CuMnAl-hydroxide. Structural and morphological char...
Source: Journal of Environmental Chemical Engineering - November 13, 2019 Category: Chemistry Source Type: research

Energy-efficient construction of thermally stable superhydrophobic nanoscale stacked lamellae based solid-phase microextraction coating for the determination of non-polar compounds.
Abstract Herein, through a facile and energy-friendly approach, thermally stable manganese-derived amorphous stacked nanosheet (MASNS) coatings with controlled wetting property ranging from superhydrophilicity to superhydrophobicity were synthesized. The superhydrophobic MASNS coating exhibited remarkable selectivity and sensitivity in the solid phase microextraction (SPME) of non-polar aromatic analytes, even amid the abundance of polar compounds, due to the superhydrophobic effect and the stacked lamellar structures. The established method was applied to the determination of polycyclic aromatic hydrocarbons (PAH...
Source: Analytica Chimica Acta - November 13, 2019 Category: Chemistry Authors: Wei S, Liu Y, Kou X, Huang S, Chen G, Xu L, Tong Q, Zhu F, Xu J, Ouyang G Tags: Anal Chim Acta Source Type: research

Spectroscopic and quantum chemical study of phthalocyanines with 1,4,7-trioxanonyl moieties
Publication date: Available online 11 November 2019Source: Journal of Molecular StructureAuthor(s): Marcin Wierzchowski, Lukasz Sobotta, Dawid Łażewski, Piotr Kasprzycki, Piotr Fita, Tomasz GoslinskiAbstractThe spectral properties of new active in PDT anticancer and antiviral dye - 1,4,8,11,15,18,22,25-octakis(1,4,7-trioxanonyl)phthalocyanine and its metal complexes were investigated in terms of their spectroscopic properties. Three quantum chemical restricted (DFT), unrestricted (UDFT) and time-dependent (TD-DFT) models were applied to explain phenomena observed in the experimental data. The experimental UV–Vis-ne...
Source: Journal of Molecular Structure - November 12, 2019 Category: Molecular Biology Source Type: research

Remediation of Manganese-Contaminated Coal-Mine Water Using Bio-Sorption and Bio-Oxidation by the Microalga Pediastrum duplex (AARLG060): A Laboratory-Scale Feasibility Study
Acidification occurs as a result of acid mine drainage after the oxidative weathering of metal sulfides. The acidic condition corrodes other toxic elements from the soil and becomes distributed around the operating site. Although coal mines go through a process of rehabilitation, water samples in the rehabilitated reservoir still reveal high concentrations of certain metals, for example, manganese (Mn). Both living and non-living biomass substances were used in Mn remediation. However, using non-living biomass as a sorbent may be inappropriate for the purposes of upscaling in high-volume water bodies. Thus, living microalg...
Source: Frontiers in Microbiology - November 12, 2019 Category: Microbiology Source Type: research

High-efficient Aerobic Oxidation of Biomass-derived 5-Hydroxymethylfurfural to 2,5-Furandicarboxylic Acid over Holey 2D Mn2O3 Nanoflakes from a Mn-based MOF.
Abstract The aerobic oxidation of 5-hydroxymethylfurfural (HMF) to 2,5-furandicarboxylic acid (FDCA), a promising renewable polymer monomer to produce bio-based plastics such as polyethylene furanoate (PEF), has emerged as the subject of increasing interest recently. Here, holey 2D Mn2O3 nanoflakes have been obtained via a facile thermal treatment of a Mn-MOF precursor. The structural and morphological properties of the nanoflakes were characterized by PXRD, FTIR, SEM and TEM to explore the formation process. It was inferred that the linker loss in MOF precursor and the oxidation of manganese cation induced by the...
Source: ChemSusChem - November 12, 2019 Category: Chemistry Authors: Bao L, Sun FZ, Zhang GY, Hu TL Tags: ChemSusChem Source Type: research

PSA targeted dual-modality manganese oxide-mesoporous silica nanoparticles for prostate cancer imaging.
Abstract Studies have shown the potential of nanomaterials for the accurate and early detection of cancer. The aim of the present study was to design and evaluate the value of prostate-specific membrane antigen (PSA)-targeted manganese oxide-mesoporous silica nanoparticles (Mn-Msns) for the detection of prostate cancer. Mn-Msns were prepared, and then conjugated with the PSA antibody and Cy7 to create the multimodality PSA-Mn-Msn-Cy7. Their particle size, zeta potential, stability and magnetic resonance imaging (MRI) features of the nanoparticles were characterized. Optical and MR imaging were evaluated in cell an...
Source: Biomedicine and pharmacotherapy = Biomedecine and pharmacotherapie - November 12, 2019 Category: Drugs & Pharmacology Authors: Du D, Fu HJ, Ren WW, Li XL, Guo LH Tags: Biomed Pharmacother Source Type: research

Blood manganese levels during pregnancy and postpartum depression: A Cohort Study among Women in Mexico.
DISCUSSION: Our results demonstrate that elevated BMn levels during pregnancy predict PPD symptoms and could be a potential pathway for intervention and prevention of PPD. PMID: 31730893 [PubMed - as supplied by publisher] (Source: Neurotoxicology)
Source: Neurotoxicology - November 12, 2019 Category: Neurology Authors: McRae N, Bello G, Svensson K, Solano-González M, Wright RJ, Niedzwiecki MM, Torres Calapiz M, Amarasiriwardena C, Schnaas L, Tamayo-Ortiz M, Téllez-Rojo MM, Wright RO Tags: Neurotoxicology Source Type: research

Gamma rays: An alternative energy source for the preparation of manganese carbonyls-based new materials.
We report on the synthesis of new manganese carbonyls-based materials prepared using gamma-rays radiation (at doses of 10 and 40 kGy) as energy source. Characterization was achieved using nuclear magnetic resonance, infrared spectroscopy, elemental analysis, single-crystal X-ray diffraction, differential scan calorimetry, thermogravimetric analysis, and mass spectrometry. The irradiated materials presented enhanced thermal stability along with formation of spherical shaped microparticles sized around 0.95 μm attested by scanning electron microscopy and energy-dispersive X-ray spectroscopy. PMID: 31760346 [PubMe...
Source: Applied Radiation and Isotopes - November 12, 2019 Category: Radiology Authors: López-Saucedo F, Bucio E, Flores-Rojas GG, Flores-Morales C, Martínez-Otero D, Zúñiga-Villarreal N Tags: Appl Radiat Isot Source Type: research

[ASAP] Exploring the Role of Manganese on Structural, Transport, and Electrochemical Properties of NASICON-Na < sub > 3 < /sub > Fe < sub > 2 – < italic toggle="yes" > y < /italic > < /sub > Mn < sub > < italic toggle="yes" > y < /italic > < /sub > (PO < sub > 4 < /sub > ) < sub > 3 < /sub > –Cathode Materials for Na-Ion Batteries
ACS Applied Materials& InterfacesDOI: 10.1021/acsami.9b10184 (Source: ACS Applied Materials and Interfaces)
Source: ACS Applied Materials and Interfaces - November 11, 2019 Category: Materials Science Authors: Katarzyna Walczak †, Bartlomiej Ge?dziorowski†, Andrzej Kulka†, Wojciech Zaja?c†, Magdalena Zia?bka‡, Rafal Idczak§, Vinh Hung Tran§, and Janina Molenda*† Source Type: research

A Delicate Balance Between Antiferromagnetism and Ferromagnetism: Theoretical and Experimental Studies of A2MRu5B2 (A = Zr, Hf, M = Fe, Mn) Metal Borides.
Abstract Metal-rich borides with the Ti 3 Co 5 B 2 -type structure represent an ideal playground for tuning magnetic interactions through chemical substitutions. In this work, we present density functional theory (DFT) and experimental studies of Ru-rich quaternary borides with the general composition A 2 M Ru 5 B 2 ( A = Zr, Hf, M = Fe, Mn). Total energy calculations show that the phases Zr 2 FeRu 5 B 2 and Hf 2 FeRu 5 B 2 -prefer ground states with strong antiferromagnetic (AFM) interactions between ferromagnetic M -chains. Manganese substitution for iron lowers these antiferromagnetic interchain interactions dr...
Source: Chemistry - November 11, 2019 Category: Chemistry Authors: Shankhari P, Bakshi NG, Zhang Y, Stekovic D, Itkis ME, Fokwa BTP Tags: Chemistry Source Type: research

Remediation of mercury contaminated soil, water, and air: A review of emerging materials and innovative technologies.
Abstract Mercury contamination in soil, water and air is associated with potential toxicity to humans and ecosystems. Industrial activities such as coal combustion have led to increased mercury (Hg) concentrations in different environmental media. This review critically evaluates recent developments in technological approaches for the remediation of Hg contaminated soil, water and air, with a focus on emerging materials and innovative technologies. Extensive research on various nanomaterials, such as carbon nanotubes (CNTs), nanosheets and magnetic nanocomposites, for mercury removal are investigated. This paper a...
Source: Environment International - November 11, 2019 Category: Environmental Health Authors: Wang L, Hou D, Cao Y, Ok YS, Tack FMG, Rinklebe J, O'Connor D Tags: Environ Int Source Type: research

Zinc and manganese substituted hydroxyapatite/CMC/PVP electrospun composite for bone repair applications.
Abstract Zn-Mn HAP (Zinc and Manganese substituted Hydroxyapatite), CMC (Carboxymethyl cellulose)/PVP (Polyvinyl pyrrolidone) and (Zn-Mn HAP)/CMC/PVP (Zn = Mn = 0.05, 0.1 M) were prepared by hydrothermal and electrospinning methods respectively. The prepared composites were characterized using powder X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR) and Scanning Electron Microscopy (SEM) with Energy Dispersive X-Ray Analysis (EDAX) to examine the phase formation, functional groups and surface morphology. FTIR spectra of the composite showed the presence of functional groups in the composite. ...
Source: International Journal of Biological Macromolecules - November 11, 2019 Category: Biochemistry Authors: Kandasamy S, Narayanan V, Sumathi S Tags: Int J Biol Macromol Source Type: research

A mechanistic approach of chromium (VI) adsorption onto manganese oxides and boehmite
In this study, birnessite (δ-MnO2), pyrolusite (β-MnO2), hausmannite (Mn3O4), manganite (γ-MnOOH), boehmite (γ-AlOOH), and Mn-Al binary oxide was used as adsorbents to adsorb Cr(VI) over a range of solution pH and initial Cr(VI) concentrations. A combined approach using the Langmuir and Freundlich models, proton stoichiometry and surface complexation model (SCM) have been used to describe the probable Cr(VI) adsorption process. Birnessite was the most potent adsorbent at low pH. The Langmuir model could describe the equilibrium isotherm data well, suggesting a uniform surface nature. Proton stoichiom...
Source: Journal of Environmental Chemical Engineering - November 10, 2019 Category: Chemistry Source Type: research

Influence of intercritical quenching on the structure and mechanical properties of a dual-phase steel with low manganese content
Publication date: 2019Source: Materials Today: Proceedings, Volume 19, Part 3Author(s): Constantin Dulucheanu, Traian Severin, Alexandru Potorac, Luminita IrimescuAbstractIn this article are presented the results of studies conducted in order to determine the influence of technological parameters of heat treatment on the structure and mechanical properties of a dual-phase steel with 0.101% C and 0.529% Mn. The structure, specific for a dual-phase steel, was obtained by intercritical quenching, when heating for 30 minutes at 760, 780, 800 and 820 °C, and cooling in water without mechanical agitation and in water activat...
Source: Materials Today: Proceedings - November 9, 2019 Category: Materials Science Source Type: research

Conductive and enzyme-like silk fibers for soft sensing application
Publication date: Available online 8 November 2019Source: Biosensors and BioelectronicsAuthor(s): Manish Singh, Paolo Bollella, Lo Gorton, Estera Dey, Cedric DickoAbstractA combination of supercritical carbon dioxide (scCO2) impregnation of pyrrole and sonochemical transformation of permanganate (KMnO4) was used to impart conductive and catalytic properties to silk fibers. The results indicated that the conductivity (from polypyrrole –PPy) and catalytic activities (from manganese dioxide –MnO2) were independent and complementary within the processing parameters used. The enhanced conductivity was attributed to ...
Source: Biosensors and Bioelectronics - November 9, 2019 Category: Biotechnology Source Type: research

Fabrication of the alginate-combusted coal gangue composite for simultaneous and effective adsorption of Zn(II) and Mn(II)
In this study, the alginate-combusted coal gangue (ACCG) composite was prepared and used as an adsorbent for Zn(II) and Mn(II) removal in batch experiments. The mineralogy, structure, and morphology of the ACCG composite were characterized. The principal parameters have been optimized, which in optimum condition, the maximum uptake of zinc and manganese was obtained 77.68 and 64.29 mg/g, respectively. To catch the mechanism of zinc and manganese adsorption, the equilibrium studies were investigated using nonlinear isotherm models in single and binary systems. The studies indicate that the adsorption process in both syste...
Source: Journal of Environmental Chemical Engineering - November 9, 2019 Category: Chemistry Source Type: research

Identification of reversible insertion-type lithium storage reaction of manganese oxide with long cycle lifespan
In this study, δ-MnO2 of thickness 8 nm anchored on the surface of carbon nanotubes (CNT) by Mn-O-C chemical bonding is synthesized via a facile hydrothermal method. Numerous ex-situ characterizations of the lithium storage process were performed. Furthermore, density functional theory (DFT) calculations indicated that δ-MnO2 (0 1 2) thermodynamically prefers bonding with CNTs. Moreover, the interfacial interaction reinforces the connection of Mn-O and reduces the bond strength of Li-O in lithiated MnO2, which could facilitate an intercalation-type lithium storage reaction. Consequently, the as-synthesized &del...
Source: Journal of Energy Chemistry - November 9, 2019 Category: Chemistry Source Type: research

Facile fabrication of nanosheet-assembled MnCoOx hollow flower-like microspheres as highly effective catalysts for the low-temperature selective catalytic reduction of NOx by NH3.
Abstract A series of MnCoOx flower-like hollow microspheres with various molecular proportions of reactant were prepared through simple solvothermal method for the ammonia selective catalytic reduction (SCR) at low temperatures. The as-prepared samples have been applied by various characterization techniques to explore the formation process of the morphology and physicochemical properties. The Mn(1)Co(1)Ox presented the optimal intrinsic catalytic performance (95% NOx conversion at 75 °C), favorable thermal stability, and strong SO2 resistance. The excellent properties mainly related to its higher specific sur...
Source: Environmental Science and Pollution Research International - November 9, 2019 Category: Environmental Health Authors: Tang X, Shi Y, Yi H, Gao F, Zhao S, Yang K, Zhang R, Ji W, Ma Y, Wang C Tags: Environ Sci Pollut Res Int Source Type: research

The role of BTBD9 in the cerebral cortex and the pathogenesis of restless legs syndrome.
Abstract Restless legs syndrome (RLS) is a nocturnal neurological disorder affecting up to 10% of the population. It is characterized by an urge to move and uncomfortable sensations in the legs which can be relieved by movements. Mutations in BTBD9 may confer a higher risk of RLS. We developed Btbd9 knockout mice as an animal model. Functional alterations in the cerebral cortex, especially the sensorimotor cortex, have been found in RLS patients in several imaging studies. However, the role of cerebral cortex in the pathogenesis of RLS remains unclear. To explore this, we used in vivo manganese-enhanced MRI and fo...
Source: Experimental Neurology - November 9, 2019 Category: Neurology Authors: Lyu S, Xing H, DeAndrade MP, Perez PD, Zhang K, Liu Y, Yokoi F, Febo M, Li Y Tags: Exp Neurol Source Type: research

Impact of bonfires on soil properties in an urban park in Vilnius (Lithuania).
ira P Abstract Lighting bonfires in urban parks is a widespread practice. However, few studies have examined their impact on soil properties. The aim of this study was to analyze the impact of bonfires on the soil properties of an urban park in Vilnius, Lithuania. The properties studied were soil water repellency (SWR), aggregate stability (AS), soil organic matter (SOM) content, total nitrogen (TN), inorganic carbon (IC), pH, electrical conductivity (EC), extractable calcium (Ca), magnesium (Mg), sodium (Na), potassium (K), aluminum (Al), manganese (Mn), iron (Fe), zinc (Zn), copper (Cu), boron (B), chromium (Cr)...
Source: Environmental Research - November 9, 2019 Category: Environmental Health Authors: Francos M, Úbeda X, Pereira P Tags: Environ Res Source Type: research

[ASAP] Understanding the Electrode/Electrolyte Interface Layer on the Li-Rich Nickel Manganese Cobalt Layered Oxide Cathode by XPS
ACS Applied Materials& InterfacesDOI: 10.1021/acsami.9b14389 (Source: ACS Applied Materials and Interfaces)
Source: ACS Applied Materials and Interfaces - November 8, 2019 Category: Materials Science Authors: Maral Hekmatfar †‡, Arefeh Kazzazi†‡, Gebrekidan Gebresilassie Eshetu†‡, Ivana Hasa*†‡, and Stefano Passerini*†‡ Source Type: research

Titanium oxide nanoparticle-embedded mesoporous manganese oxide microparticles for supercapacitor electrodes
Publication date: Available online 7 November 2019Source: Journal of Physics and Chemistry of SolidsAuthor(s): Haein Lee, Sohyun Jin, Sanggyu YimAbstractDue to increased contact between electrode and electrolyte, using nanoparticles (NPs) of manganese oxide (MnO2) as an electrode material improves the specific capacitance (Csp) of supercapacitors. However, this material is not yet commercially feasible because the voltammetric response drops rapidly with electrode thickness due to its poor electrical conductivity; also, the large-scale production of MnO2 NPs is significantly difficult. To overcome these limitations simulta...
Source: Journal of Physics and Chemistry of Solids - November 8, 2019 Category: Physics Source Type: research

Two coordination polymers constructed by 5-[(4-carboxyphenoxy)methyl]benzene-1,3-dicarboxylic acid and 2,2 ′ -bipyridine: syntheses, structures and luminescence properties
Coordination polymers (CPs) have attracted increasing interest in recent years. In this work, two new CPs, namely poly[[aquabis(2,2 ′ -bipyridine- κ 2N,N ′ ){ μ 3-5-[(4-carboxylatophenoxy)methyl]benzene-1,3-dicarboxylato- κ 4O1,O1 ′ :O3:O5}( μ -formato- κ 3O:O,O ′ )dicadmium(II)] monohydrate], {[Cd2(C16H9O7)(HCO2)(C10H8N2)2(H2O)] · H2O}n (1), and poly[[(2,2 ′ -bipyridine- κ 2N,N ′ ){ μ 3-5-[(4-carboxylphenoxy)methyl]benzene-1,3-dicarboxylato- κ 4O1,O1 ′ :O3:O5}manganese(II)] sesquihydrate], {[Mn(C16H10O7)(C10H8N2)] · 1.5H2O}n (2)...
Source: Acta Crystallographica Section C - November 8, 2019 Category: Chemistry Authors: He, Y.-C. Xiao, L.-Y. Yuan, Z.-H. Zhang, J. Wang, Y. Xu, N. Tags: coordination polymer cadmium manganese crystal structure tricarboxylic acid 2,2 ′ -bipyridine research papers Source Type: research

Potentially toxic elements (PTEs) in crops, soil, and water near Xiangtan manganese mine, China: potential risk to health in the foodchain
AbstractThe pollution from large-scale manganese mining and associated industries in Xiangtan (south Central China) has created a significant burden on the local environment. The proximity of mining, and other industrial activity to the local population, is of concern and impact of past industrial on the food chain was evaluated by the assessment of common food groups (rice, soybean, and sweet potato), and the associated soil and water in the region. We focused on specific potentially toxic elements (PTEs): Mn, Pb, Cd, Cr, Cu, and Zn associated with industrial activity,  identifying the distribution of pollution, the ...
Source: Environmental Geochemistry and Health - November 8, 2019 Category: Environmental Health Source Type: research

Activatable MRI-monitoring gene delivery for the theranostic of renal carcinoma.
In this study, we constructed a PEG-MnO2-OPN siRNA nanocomplex via a modular streptavidin bridge for the theranostic treatment of renal carcinoma in vitro and in vivo. This strategy of utilizing PEG-MnO2 nanosheets for OPN siRNA delivery showed effective tumor growth inhibition of 786-O tumor-bearing mice, and such a process could be monitored by the activated T1-weight MRI, illustrating the promising potential of PEG-MnO2 nanosheets for the fabrication of an MRI-based theranostic system. PMID: 31734089 [PubMed - as supplied by publisher] (Source: Colloids and Surfaces)
Source: Colloids and Surfaces - November 8, 2019 Category: Biotechnology Authors: Shi M, Wang S, Zheng S, Hou P, Dong L, He M, Wu C, Zhang X, Zuo F, Xu K, Li J Tags: Colloids Surf B Biointerfaces Source Type: research

Alterations to transcriptomic profile, histopathology, and oxidative stress in liver of pikeperch (Sander lucioperca) under heat stress
This study applied consistent heat stress (29 °C, 0–48 h) to pikeperch juveniles, and a transcriptomic profile of pikeperch liver under heat stress (29 °C, 0 h) was performed by RNA-Seq. The antioxidant status, changes in liver histology, and antioxidant gene expression at different time points were examined. We identified 403 differentially expressed genes (DEGs), many of which were enriched in KEGG pathways, including protein processing in endoplasmic reticulum (ER), insulin signaling, and immune-related pathways. Among these, the most significant heat-stress-related pathway was protein processing i...
Source: Fish and Shellfish Immunology - November 7, 2019 Category: Biology Source Type: research

Synthesis, thermal analysis, spectroscopy and magnetic properties of some transition metals complexes derived from new azo compound
Publication date: Available online 6 November 2019Source: Materials Today: ProceedingsAuthor(s): Asmaa M. Abdullah, Mohammed Mujbel Hasson, Mohammed Z. ThaniAbstractA new Azo compound (C17 H13ClN2O4S) (E)-4-chloro-5-((2-hydroxynaphthalen-1-yl)diazenyl)-2-methylbenzenesulfonic acid (L) was synthesized. The prepared compound was used as a ligand to prepare monomeric transition complexes [M(L)(H2O)2Cl2 via reaction of ligand (L) with hydrate metal salts M(II) where [M = Manganese (II), Cobalt(II), Nickel(II), Copper (II)] in a (1:1) ratio. The data were obtained from 13C NMR, UV–VIS and FT-IR studies, elemental micr...
Source: Materials Today: Proceedings - November 7, 2019 Category: Materials Science Source Type: research