Effect of manganese dioxide on the formation of humin during different agricultural organic wastes compostable environments: It is meaningful carbon sequestration.
Abstract The study aims to accelerate the formation of humin (HM) with the addition MnO2 to achieve carbon sequestration during different material composting. The results indicated that the addition of MnO2 could improve the concentration of HM by increasing of the content in functional groups during corn straw (CS) and chicken manure (CM) composting. With the addition of MnO2, non-aromatic functional groups were responsible for the increase of the HM concentration in CM, while aromatic functional groups were dominating for CS. Although the formation mechanism of HM varied significantly across different materials,...
Source: Bioresource Technology - December 13, 2019 Category: Biotechnology Authors: Qi H, Zhao Y, Zhao X, Yang T, Dang Q, Wu J, Lv P, Wang H, Wei Z Tags: Bioresour Technol Source Type: research

Mechanism of CO production around oxygen vacancy of LaMnO3: An efficient and rapid evaluation of doping effect on kinetics and thermodynamic driven force of CO2-splitting
J. Mater. Chem. A, 2019, Accepted Manuscript DOI: 10.1039/C9TA09764C, PaperMingkai Fu, Lei Wang, Tianzeng Ma, Haitao Ma, Huajun Xu, Xin Li Lanthanum-manganese perovskites have been shown as promising oxygen carriers for solar-driven thermochemical CO production due to low reduction temperature and considerable CO production. However, to increase energy conversion efficiency, it... The content of this RSS Feed (c) The Royal Society of Chemistry (Source: RSC - J. Mater. Chem. latest articles)
Source: RSC - J. Mater. Chem. latest articles - December 12, 2019 Category: Chemistry Authors: Mingkai Fu Source Type: research

Single-ion copper doping greatly enhances catalytic activity of manganese oxides via electronic interactions
Chem. Commun., 2019, Accepted Manuscript DOI: 10.1039/C9CC07669G, CommunicationXiaolei Hu, Shuya Li, Yaxin Chen, Weiye Qu, Junxiao Chen, Zhen Ma, Xingfu Tang Single-ion copper doping can significantly improve the catalytic activity of α-MnO2 in CO oxidation, reducing the apparent activation energy to ∼0.3 eV via strong electronic interactions between the frontier orbitals... The content of this RSS Feed (c) The Royal Society of Chemistry (Source: RSC - Chem. Commun. latest articles)
Source: RSC - Chem. Commun. latest articles - December 12, 2019 Category: Chemistry Authors: Xiaolei Hu Source Type: research

Systematically controlled synthesis of rGO/nano-MnOx materials for supercapacitors
Publication date: Available online 10 December 2019Source: Progress in Natural Science: Materials InternationalAuthor(s): Xiaoyu Zhao, Haocun Yang, Yongdan Hou, Lemuel Gbologah, Liang Zhu, Yanfei WangAbstractThe effects of hydrothermal production conditions on crystal forms, morphology and electrochemical performance of in situ reduced graphene oxide/manganese oxides (rGO/MnOx) hybrid electrode materials were studied. The XRD/SEM results show that the ratio of precursors, reaction temperature and type of solvent significantly affected the crystal form obtained and nano-structure of MnOx. Varied precursor ratios of KMnO4:GO...
Source: Progress in Natural Science: Materials International - December 12, 2019 Category: Materials Science Source Type: research

Geochemical evaluation of bottom sediments affected by historic mining and the rupture of the Fund ão dam, Brazil.
Geochemical evaluation of bottom sediments affected by historic mining and the rupture of the Fundão dam, Brazil. Environ Sci Pollut Res Int. 2019 Dec 12;: Authors: Dos Reis DA, Nascimento LP, de Abreu AT, Nalini Júnior HA, Roeser HMP, da Fonseca Santiago A Abstract The rupture of the Fundão dam released about 39 million m3 of tailings into the Rio Doce/Brazil. The sediment load increase in the affected rivers has become a concern. As such, this article provides recent information about the region. In addition, based on past studies in the region, it shows the magnitude and dynami...
Source: Environmental Science and Pollution Research International - December 12, 2019 Category: Environmental Health Authors: Dos Reis DA, Nascimento LP, de Abreu AT, Nalini Júnior HA, Roeser HMP, da Fonseca Santiago A Tags: Environ Sci Pollut Res Int Source Type: research

Aluminium alters mineral composition and polyphenol metabolism in leaves of tea plants (Camellia sinensis).
In conclusion, low pH and enhanced Al availability to tea plants have a strong influence on the polyphenolic pattern of tealeaves and therefore may alter both the leaves' antioxidant properties and their ability to bind Al and Fe in non-toxic form. PMID: 31862583 [PubMed - as supplied by publisher] (Source: Journal of Inorganic Biochemistry)
Source: Journal of Inorganic Biochemistry - December 12, 2019 Category: Biochemistry Authors: Tolrà R, Martos S, Hajiboland R, Poschenrieder C Tags: J Inorg Biochem Source Type: research

Genetic dissection of zinc, iron, copper, manganese and phosphorus in wheat (Triticum aestivum L.) grain and rachis at two developmental stages
In this study, we report a genome-wide association using a wheat diversity panel to dissect the genetics controlling zinc, iron, copper, manganese and phosphorus concentrations in the grain and rachis during grain development and at physiological maturity.Significant marker-trait associations (MTAs) were identified for each nutrient using multi-locus mixed model methodologies. For mature grain, markers that showed significant pleiotropic effects were found on chromosomes 1A, 3B and 5B, of which those on chromosome 5B at ∼95.5 cM were consistent over two growing seasons. Co-located MTAs were identified for the nu...
Source: Plant Science - December 11, 2019 Category: Biology Source Type: research

Synthesis optimization and X-ray absorption spectroscopy investigation of polymeric anion exchanger supported binary Fe/Mn oxides nanoparticles for enhanced As(III) removal
Publication date: Available online 10 December 2019Source: Reactive and Functional PolymersAuthor(s): Antika Pranudta, Wantana Klysubun, Medhat Mohamed El-Moselhy, Surapol PadungthonAbstractA macroporous anion exchange resin containing high density of positively-charged quaternary ammonium functional groups and supporting binary Fe/Mn oxides nanoparticles (HA502P-Fe/Mn) was synthesized for simultaneous As(III)oxidation and As(V) adsorption within a single bead. Various preparation parameters were investigated and optimized to achieve the highest As(III) removal efficiency, including metal oxides type, supporting materials,...
Source: Reactive and Functional Polymers - December 11, 2019 Category: Chemistry Source Type: research

Removal of cationic and anionic dyes from aqueous phase by Ball clay – Manganese dioxide nanocomposites
We report novel method to synthesis of Ball clay – Manganese dioxide nanocomposite (BC-MNC) as an effective and eco-friendly adsorbent for the removal of malachite green(MG) and acid blue 25 (AB25) from its aqueous solution. The as synthesized BC-MNC was characterized using powder X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), Scanning electron microscopy (SEM), Transmission electron microscopy (TEM), zeta potential analysis, Brunauer−Emmett−Teller (BET) surface area analysis, Barrett-Joyner-Halenda (BJH) pore size and volume analysis. Many factors such as pH, adsorbent dose, te...
Source: Journal of Environmental Chemical Engineering - December 11, 2019 Category: Chemistry Source Type: research

Synthesis of hierarchical porous Co(OH)2/Ni2Mn1Ox composites on Ni foam for high performance battery-supercapacitor hybrid devices
Publication date: Available online 10 December 2019Source: Journal of Alloys and CompoundsAuthor(s): Haicheng Xuan, Ting Liang, Guohong Zhang, Yayu Guan, Hongsheng Li, Rui Wang, Peide Han, Yucheng WuAbstractIn this work, nickel-manganese metal oxide (NiMnOx) composites with different Ni to Mn molar ratios onto Ni foam (NF) were fabricated by one-pot hydrothermal method. The influence of Ni to Mn molar ratio on the electrochemical performance was investigated and the optimal value was determined to be 2/1 (Ni2Mn1Ox/NF). A Co(OH)2/Ni2Mn1Ox/NF nanocomposite with novel porous honeycomb network structure was designed by electro...
Source: Journal of Alloys and Compounds - December 11, 2019 Category: Chemistry Source Type: research

Efficient UV-vis-IR photothermocatalytic selective ethanol oxidation on MnOx/TiO2 nanocomposite significantly enhanced by a novel photoactivation
J. Mater. Chem. A, 2019, Accepted Manuscript DOI: 10.1039/C9TA12531K, PaperYi Yang, Shaowen Wu, Yuanzhi Li, Qian Zhang, Xiujian Zhao MnOx/TiO2 nanocomposites of amorphous manganese oxide supported on TiO2 with Mn/(Mn+Ti) molar ratios of 0.1, 0.2, 0.3, and 0.4 were prepared and characterized. Based on the nanocomposites, a novel strategy... The content of this RSS Feed (c) The Royal Society of Chemistry (Source: RSC - J. Mater. Chem. latest articles)
Source: RSC - J. Mater. Chem. latest articles - December 11, 2019 Category: Chemistry Authors: Yi Yang Source Type: research

Effect of Trace Minerals and B Vitamins on the Proliferation/Cytotoxicity and Mineralization of a Gilthead Seabream Bone-Derived Cell Line.
ias J Abstract Trace minerals and vitamins are known modulators of bone metabolism, and dietary optimization of these components may improve skeletal development and reduce the occurrence of skeleton deformities in farmed fish. As for larval stages, mineral and water-soluble vitamin nutrition requirements are lacking in research efforts and knowledge is scarce. An in vitro cell system developed from gilthead seabream vertebra and capable of mineralization was used to assess the effect of B vitamins (thiamin and pyridoxine) and trace minerals (copper, manganese, and zinc in a sulfated and chelated form) on cel...
Source: Biological Trace Element Research - December 11, 2019 Category: Biology Authors: Viegas MN, Laizé V, Salgado MA, Aguiar C, Dias J Tags: Biol Trace Elem Res Source Type: research

MnOx MFs as Coreaction Accelerator for Construction of a Novel Ternary Electrochemiluminescence System: Ultrasensitive Detection of MicroRNA
Chem. Commun., 2019, Accepted Manuscript DOI: 10.1039/C9CC08433A, CommunicationRong Yang, Jia-li Liu, Yaqin Chai, Ruo Yuan With multivalent manganese oxides microflowers (MnOx MFs) as a prominent coreaction accelerator in luminol/dissolved oxygen system, combining with DNA nanostructures for efficient immobilization of ECL quencher doxorubicin-ferrocenecarboxylic acid (Dox-FcCOOH), an... The content of this RSS Feed (c) The Royal Society of Chemistry (Source: RSC - Chem. Commun. latest articles)
Source: RSC - Chem. Commun. latest articles - December 10, 2019 Category: Chemistry Authors: Rong Yang Source Type: research

BINUCLEAR IMINOPYRIDINE-BRIDGED 3D LATE TRANSITION METAL COMPLEXES WITH o-SEMIQUINONES
Publication date: Available online 9 December 2019Source: Inorganica Chimica ActaAuthor(s): Alexey A. Zolotukhin, Michael P. Bubnov, Artem S. Bogomyakov, Anton V. Cherkasov, Georgy Fukin, Vladimir K. CherkasovAbstractFour novel binuclear high spin manganese(II), iron(II), cobalt(II) and nickel(II) complexes containing 1,2-bis(pyridin-2-ylmethylene)-para-phenylenediamine as a bridging ligand have been synthesized and investigated. Molecular structures of manganese and cobalt complexes were established by single crystal X-ray structural analysis. For all the complexes the magnetic susceptibility measurements have been perfor...
Source: Inorganica Chimica Acta - December 10, 2019 Category: Chemistry Source Type: research

Sulfur resource recovery based on electrolytic manganese residue calcination and manganese oxide ore desulfurization for the clean production of electrolytic manganese
Publication date: Available online 9 December 2019Source: Chinese Journal of Chemical EngineeringAuthor(s): Dong Sun, Lin Yang, Ning Liu, Wenju Jiang, Xia Jiang, Jianjun Li, Zhengyou Yang, Zhengping SongAbstractAn environmentally friendly and resource-conserving route to the clean production of electrolytic manganese was developed, in which the electrolytic manganese residue (EMR) was initially calcined for cement buffering; then the generated SO2-containing flue gas was managed using manganese oxide ore and anolyte (MOOA) desulfurization; at last, the desulfurized slurry was introduced to the electrolytic manganese produc...
Source: Chinese Journal of Chemical Engineering - December 10, 2019 Category: Chemistry Source Type: research

Trace Element Status and Hypothyroidism: A Systematic Review and Meta-analysis.
Abstract The relationship between thyroid hormones metabolism and trace element levels has biological plausibility; however, previous reports that compared trace element levels in patients with hypothyroidism and healthy individuals yielded conflicting results. Therefore, the aim of this meta-analysis was to investigate the association between selected trace elements (i.e., selenium (Se), zinc (Zn), iron (Fe), manganese (Mn), copper (Cu), lead (Pb)), and magnesium (Mg) concentrations in patients with hypothyroidism and healthy controls. Electronic databases, including PubMed, Scopus, Embase, and Science Direct, we...
Source: Biological Trace Element Research - December 10, 2019 Category: Biology Authors: Talebi S, Ghaedi E, Sadeghi E, Mohammadi H, Hadi A, Clark CCT, Askari G Tags: Biol Trace Elem Res Source Type: research

Biomimetic hydrogenation catalyzed by a manganese model of [Fe]-hydrogenase.
Abstract [Fe]-hydrogenase is an efficient biological hydrogenation catalyst. Despite intense research, Fe complexes mimicking the active site of [Fe]-hydrogenase have not achieved turnovers in hydrogenation reactions. Here we describe the design and development of a manganese(I) mimic of [Fe]-hydrogenase. This complex exhibits the highest activity and broadest scope in catalytic hydrogenation among known mimics. Thanks to its biomimetic nature, the complex exhibits unique activity in hydrogenation of compounds analogous to methenyl-H4MPT+, the natural substrate of [Fe]-hydrogenase. This activity enables asymmetric...
Source: Angewandte Chemie - December 10, 2019 Category: Chemistry Authors: Pan H, Hu X Tags: Angew Chem Int Ed Engl Source Type: research

Assessment of the health risk related to exposure to ultrafine, fine, and total particulates and metals in a metal finishing plant.
A, Uzun B Abstract The materials and byproducts of the processes used in the metal finishing industry are released as particle contaminants into the air in the workplace. The present study aimed to determine the concentrations and size distributions of these particles and of elements chromium, nickel, copper, manganese, cobalt, and lead (Cr, Ni, Cu, Mn, Co, and Pb, respectively) in a metal finishing industry and evaluate their potential health risks. Particles that are airborne from the dipping baths in the plant were sampled using a Sioutas cascade impactor at five different size fractions (PM>2.5, PM1.0-2.5, ...
Source: Environmental Science and Pollution Research International - December 10, 2019 Category: Environmental Health Authors: Onat B, Çalışkan NS, Şahin ÜA, Uzun B Tags: Environ Sci Pollut Res Int Source Type: research

Obtaining and characterization of anthocyanins from Euterpe oleracea (açaí) dry extract for nutraceutical and food preparations
Abstract The main constituents of the Euterpe oleracea Mart., Arecaceae, fruits (a çaí) are anthocyanins. This paper aimed to standardize the extraction process and characterize an anthocyanin-rich dry extract obtained from this fruit. A 23 full factorial design was used. The volumes of ethanol 92% and acetic acid and the extraction time were used as factors. Total solids and an thocyanins content were used as feedback. The dry extract was obtained by freeze-drying. The content of anthocyanins was determined spectrophotometrically. Fourier Transform Infrared Spectroscopy, Differential Scanning Calorimeter, Th...
Source: Revista Brasileira de Farmacognosia - December 9, 2019 Category: Drugs & Pharmacology Source Type: research

Synthesis, structure and catalytic activity of manganese(II) complexes derived from bis(imidazole)methane-based ligands
Dalton Trans., 2019, Accepted Manuscript DOI: 10.1039/C9DT03886H, PaperHEMANTA DEKA, Ankit Kumar, Soumyadip Patra, Mahendra Kumar Awasthi, Sanjay Kumar Singh New mononuclear manganese(II) complexes [Mn( κ2-L1)(OAc)2] ([Mn]-1), [Mn(κ2-L2)(OAc)2] ([Mn]-2) and [Mn(κ2-L3)(OAc)2] ([Mn]-3) with imidazole based ligands {4,4'-(phenylmethylene)bis(2-ethyl-5-methyl-1H-imidazole)} (L1), {(4,4'-((2-methoxy phenyl)methylene)bis(2-ethyl-5-methyl-1H-imidazole)} (L2) and {4,4'-((2-chlorophenyl) methylene)bis(2- ethyl-5-methyl-1H-imidazole)} (L3) are synthesized and fully characterized by... The content of this RSS Feed (...
Source: RSC - Dalton Trans. latest articles - December 9, 2019 Category: Chemistry Authors: HEMANTA DEKA Source Type: research

The contents and release behavior of heavy metals in construction and demolition waste used in freeway construction.
In this study, a total of 190 CDW samples including 80 concretes, 80 bricks, 20 porcelains, and 10 mixed samples were collected from five treatment plants. Five farmland soil samples near treatment plants were collected as controls. The contents of 10 elements including cadmium (Cd), arsenic (As), copper (Cu), nickel (Ni), zinc (Zn), chromium (Cr), lead (Pb), manganese (Mn), silver (Ag), and mercury (Hg) in these samples were measured. The contents of 8 elements (Cu, Ni, Zn, Cr, Pb, Mn, Ag, and Hg) in all CDW samples were qualified for the third-level criterion of the Standard of Soil Environment (GB15618-2008). However, C...
Source: Environmental Science and Pollution Research International - December 9, 2019 Category: Environmental Health Authors: Chen Y, Zhou Y Tags: Environ Sci Pollut Res Int 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. (Source: Colloids and Surfaces B: Biointerfaces)
Source: Colloids and Surfaces B: Biointerfaces - December 8, 2019 Category: Biochemistry Source Type: research

Hybrid MII-organic-diphosphate hydrates (MII = Mn, Ni and Zn): Structural characterization, hirshfeld surface analysis and antitumoral activity
Publication date: 15 February 2020Source: Journal of Molecular Structure, Volume 1202Author(s): Intissar Moghdad, Aicha Mbarek, Ferdinando Costantino, Sabrina Nazzareni, Houcine NaïliAbstractThree inorganic-organic hybrid diphosphates, templated by transition metal (2,6-(CH3)2C6H3NH3)2[MII(H2P2O7)2(H2O)2] (MII = Mn, Ni, Zn), were successfully synthesized by low speed of evaporation conditions after using the ion exchange chemical procedure. Their crystal structures were solved from single-crystal X-ray diffraction data. All compounds are isotypic and crystallize in the triclinic system with space group Pī. The cr...
Source: Journal of Molecular Structure - December 7, 2019 Category: Molecular Biology Source Type: research

New complexes of manganese (II) and copper (II) derived from the two new furopyran-3, 4-dione ligands: Synthesis, spectral characterization, ESR, DFT studies and evaluation of antimicrobial activity
Publication date: 15 February 2020Source: Journal of Molecular Structure, Volume 1202Author(s): Yamina Abdi, Nadjia Bensouilah, Dhaouya Siziani, Maamar Hamdi, Artur M.S. Silva, Baya Boutemeur-KheddisAbstractA total of four new metal complex derivatives of two new ligands 2-(hydroxy(phenyl)-6-methyl-2H-furo [3,2-c]pyran-3,4-dione (L1) and 2-(hydroxyl (2-hydroxyphenyl) -6-methyl-2H-furo [3,2-c]pyran-3,4-dione (L2) with the metal ions Mn(II) and Cu(II) have been successfully prepared in alcoholic medium. The complexes obtained are investigated by spectral studies with the use of FT-IR and UV–vis techniques, ESR and magn...
Source: Journal of Molecular Structure - December 7, 2019 Category: Molecular Biology Source Type: research

3D interconnected boron- and nitrogen-codoped carbon nanosheets decorated with manganese oxides for high-performance capacitive deionization
Publication date: Available online 5 December 2019Source: CarbonAuthor(s): Zhengzheng Xie, Xiaohong Shang, Jianmao Yang, Bin Hu, Pengfei Nie, Wenwen Jiang, Jianyun LiuAbstractThe boron- and nitrogen-codoped 3D interconnected carbon nanosheets were synthesized with chitosan hydrogel and boric acid as precursors. The obtained nanosheets were interconnected to form a 3D network with thin lamellae (thickness ∼30 nm) and abundant meso-pores. The successful doping of boron and nitrogen atoms was proved by X-ray photoelectron spectroscopy (XPS). Following the decoration of manganese oxides, the resultant B, N-codoped mangan...
Source: Carbon - December 7, 2019 Category: Materials Science Source Type: research

Investigation of the effect of transition metals (MN, CO, GD) on the spatial structure of fibrinopeptide B by NMR spectroscopy
Publication date: 15 March 2020Source: Journal of Molecular Structure, Volume 1204Author(s): Adeliia R. Faizullina, Dmitriy S. Blokhin, Aleksandra M. Kusova, Vladimir V. KlochkovAbstractFibrinopeptide B (GluFib) is one of the factors of thrombosis. Normal soluble blood protein, fibrinogen (fibrinopeptide A and fibrinopeptide B), is transformed into the insoluble fibrin, which in the form of filaments adheres to the vessel wall at the site of injury, forming a grid. In the literature, it is noted that a violation of blood coagulation under the influence of cobalt and lanthanides compounds has been established. It is possibl...
Source: Journal of Molecular Structure - December 7, 2019 Category: Molecular Biology Source Type: research

Remaining-useful-life prediction via multiple linear regression and recurrent neural network reflecting degradation information of 20Ah LiNixMnyCo1−x−yO2 pouch cell
Publication date: Available online 5 December 2019Source: Journal of Electroanalytical ChemistryAuthor(s): Soon-Jong Kwon, Dongho Han, Jin Hyeok Choi, Ji-Hun Lim, Sung-Eun Lee, Jonghoon KimAbstractThis paper presents the results of various experiments and analyses pertaining to lithium‑nickel‑cobalt‑manganese oxide (NCM) batteries having a nominal capacity of 20 Ah. This pouch type battery is characterized by high power rating and high energy density. The batteries used in the experiments were manufactured by varying the design ratios of nickel, cobalt, and manganese (5:2:3 and 6:2:2) in the NCM cathode materials. An...
Source: Journal of Electroanalytical Chemistry - December 7, 2019 Category: Chemistry Source Type: research

Synthesis and crystal structure of catena-poly[[bis[(2,2 ′ ;6 ′ ,2 ′ ′ -terpyridine)manganese(II)]- μ 4-pentathiodiantimonato] tetrahydrate] showing a 1D MnSbS network
The asymmetric unit of the title compound, {[Mn2Sb2S5(C15H11N3)2] · 4H2O}n, consists of two crystallographically independent MnII ions, two unique terpyridine ligands, one [Sb2S5]4 − anion and four solvent water molecules, all of which are located in general positions. The [Sb2S5]4 − anion consists of two SbS3 units that share common corners. Each of the MnII ions is fivefold coordinated by two symmetry-related S atoms of [Sb2S5]4 − anions and three N atoms of a terpyridine ligand within an irregular coordination. Each two anions are linked by two [Mn(terpyridine)]2+ cations into chains along the c...
Source: Acta Crystallographica Section E - December 7, 2019 Category: Chemistry Authors: Danker, F. N ä ther, C. Bensch, W. Tags: crystal structure,thioantimonate chain compound hydrogen bonding research communications Source Type: research

A free-standing manganese cobalt sulfide@cobalt nickel layered double hydroxide core –shell heterostructure for an asymmetric supercapacitor
Dalton Trans., 2020, Advance Article DOI: 10.1039/C9DT03974K, PaperHaoyan Liang, Tiesong Lin, Shengyao Wang, Henan Jia, Chun Li, Jian Cao, Jicai Feng, Weidong Fei, Junlei Qi Rational design of self-supported electrode materials is important to develop high-performance supercapacitors. To cite this article before page numbers are assigned, use the DOI form of citation above. The content of this RSS Feed (c) The Royal Society of Chemistry (Source: RSC - Dalton Trans. latest articles)
Source: RSC - Dalton Trans. latest articles - December 7, 2019 Category: Chemistry Authors: Haoyan Liang Source Type: research

Early Postnatal Manganese Exposure Causes Arousal Dysregulation and Lasting Hypofunctioning of the Prefrontal Cortex Catecholaminergic Systems
AbstractStudies have reported associations between environmental manganese (Mn) exposure and impaired cognition, attention, impulse control, and fine motor function in children. Our recent rodent studies established that elevated Mn exposure causes these impairments. Here, rats were exposed orally to 0, 25, or 50  mg Mn/kg/day during early postnatal life (PND 1–21) or lifelong to determine whether early life Mn exposure causes heightened behavioral reactivity in the open field, lasting changes in the catecholaminergic systems in the medial prefrontal cortex (mPFC), altered dendritic spine density, and whe ther l...
Source: Journal of Neurochemistry - December 7, 2019 Category: Neuroscience Authors: Travis E. Conley, Stephane A. Beaudin, Stephen M. Lasley, Casimir A. Fornal, Jasenia Hartman, Walter Uribe, Tooba Khan, Barbara J. Strupp, Donald R. Smith Tags: ORIGINAL ARTICLE Source Type: research

Stable carbon isotope analysis of polyphosphonate complexing agents by anion chromatography coupled to isotope ratio mass spectrometry: method development and application.
Abstract Compound-specific carbon isotope analysis (carbon CSIA) by liquid chromatography/isotope ratio mass spectrometry (LC-IRMS) is a novel and promising tool to elucidate the environmental fate of polar organic compounds such as polyphosphonates, strong complexing agents for di- and trivalent cations with growing commercial importance over the last decades. Here, we present a LC-IRMS method for the three widely used polyphosphonates 1-hydroxyethane 1,1-diphosphonate (HEDP), amino tris(methylenephosphonate) (ATMP), and ethylenediamine tetra(methylenephosphonate) (EDTMP). Separation of the analytes, as well as A...
Source: Analytical and Bioanalytical Chemistry - December 7, 2019 Category: Chemistry Authors: Martin PR, Buchner D, Jochmann MA, Haderlein SB Tags: Anal Bioanal Chem Source Type: research

Investigation of mechanical and wear behavior of Al based SiC reinforce metal matrix composite
Publication date: Available online 4 December 2019Source: Materials Today: ProceedingsAuthor(s): Rakesh Kumar Yadav, Zahir Hasan, Akhter Husain AnsariAbstractThe economy is significant element these days in the market. The examines are assuming a significant job in building field to expand the life of machine parts/segments & diminishing the expense. The composite materials can possibly supplant broadly utilized steel and aluminum because of their great qualities with better execution. Today, aluminum is used excessively across a wide range of domains, including domestic, transportation, land, sea, air and industry. Al...
Source: Materials Today: Proceedings - December 6, 2019 Category: Materials Science Source Type: research

MnO 2 fiber as a sorbent for radionuclides in oceanographic investigations
AbstractThe paper presents the results of a study of the physical, chemical and sorption properties of a fibrous sorbent —polyacrylonitrile modified with a mixed phase of manganese oxide, in relation to the natural isotopes of radium in seawater. The paper contains methodical guidelines for synthesizing the material the most efficiency and hydromechanical stability. It is described using structural (diffractometry, IR spectroscopy) and physicochemical methods of analysis (thermal analysis, gas adsorption). The possibility of using this sorbent for the concentration of cosmogenic (7Be) and natural (226Ra,228Ra,234Th) ...
Source: Journal of Radioanalytical and Nuclear Chemistry - December 6, 2019 Category: Nuclear Medicine Source Type: research

Nanoparticle ‐Embedded Electrospun Fiber–Covered Stent to Assist Intraluminal Photodynamic Treatment of Oesophageal Cancer
Electrospun fiber –covered stents as a nanoparticle delivery platform of photodynamic therapy (PDT) to assist orthotopic esophageal tumor therapy are proposed. The hypoxic microenvironment can be alleviated by the reaction of manganese dioxide in the fibers with tumor endogenous hydrogen peroxide. The functional fi ber‐covered stents can effectively exert the PDT effect as a noninvasive method for patients with advanced‐stage esophageal cancer. AbstractDrug ‐eluting stents (DESs) are promising candidates for treating human oesophageal cancer. However, the use of DESs to assist photodynamic therapy (PDT) of orth...
Source: Small - December 6, 2019 Category: Nanotechnology Authors: Junyuan Xiao, Liang Cheng, Tonglei Fang, Yiran Zhang, Jia Zhou, Ruoyu Cheng, Wantao Tang, Xiaoyan Zhong, Yong Lu, Lianfu Deng, Yingsheng Cheng, Yueqi Zhu, Zhuang Liu, Wenguo Cui Tags: Communication Source Type: research

Elements in surface and well water from the central North China Plain: Enrichment patterns, origins, and health risk assessment.
Abstract The principal aim of this study was to understand the enrichment patterns of elements in water from typical coal mine and irrigation areas. For this study, samples of surface water, shallow water, and deep water were collected from Handan, Jining, and Heze cities and their surrounding areas in the central North China Plain. The results showed that the hydrochemical characteristics were dominated by Ca-Mg-Cl and Ca-HCO3. Elements in the studied surface water, including strontium, iron and boron, were anomalously enriched at levels more than 654, 294 and 134 times their global river water averages, respecti...
Source: Environmental Pollution - December 6, 2019 Category: Environmental Health Authors: Long J, Luo K Tags: Environ Pollut Source Type: research

Crosstalk shielding of transitional metal ions for long cycling lithium metal batteries
J. Mater. Chem. A, 2019, Accepted Manuscript DOI: 10.1039/C9TA12269A, PaperXue-Qiang Zhang, Xin-Meng Wang, Bo-Quan Li, Peng Shi, Jia-Qi Huang, Aibing Chen, Qiang Zhang Lithium metal batteries (LMBs) integrating lithium anode and high-specific-capacity manganese (Mn)-based cathode constitutes a promising high-energy-density system. However, this full cell suffers from poor cycling life under practical conditions. In... The content of this RSS Feed (c) The Royal Society of Chemistry (Source: RSC - J. Mater. Chem. latest articles)
Source: RSC - J. Mater. Chem. latest articles - December 5, 2019 Category: Chemistry Authors: Xue-Qiang Zhang Source Type: research

Acute and long-term manganese exposure and subsequent accumulation in relation to idiopathic blindness in the American lobster, Homarus americanus
Publication date: Available online 4 December 2019Source: Aquatic ToxicologyAuthor(s): Addison T. Ochs, Jeffrey D. Shields, Gary W. Rice, Michael A. UngerAbstractManganese (Mn) is a hypoxic reactive metal commonly found in marine sediments. Under hypoxic conditions the metal becomes fully reduced to Mn2+ and is biologically available to the benthic community for uptake. Mn is also a potent neurotoxin and it may play a role in the etiology of idiopathic blindness that has been observed in American lobsters. An acute study was designed to expose American lobster, Homarus americanus, to 0, 20, 80, 150, and 300 mg&thins...
Source: Aquatic Toxicology - December 5, 2019 Category: Toxicology Source Type: research

Toxicity of nanodiamonds to white rot fungi Phanerochaete chrysosporium through oxidative stress
In this study, we evaluated the interaction between detonation NDs and white rot fungus Phanerochaete chrysosporium and the impact on the fungus decompositions activities. NDs did not influence the biomass gain of P. chrysosporium and the culture medium pH values. The mycelia of P. chrysosporium were destroyed upon the direct contact with NDs, while the rest retained the fibrous structure. Ultrastructural observations suggested that small aggregates of NDs seldom entered the fungus cells, but the break of cell wall and the loss of cytoplasm were induced by NDs. Under both optical and electron microscopes, the aggregation o...
Source: Colloids and Surfaces B: Biointerfaces - December 5, 2019 Category: Biochemistry Source Type: research

Tetrahedral photoluminescent manganese(II) halide complexes with 1,3-dimethyl-2-phenyl-1,3-diazaphospholidine-2-oxide as ligand
New J. Chem., 2019, Accepted Manuscript DOI: 10.1039/C9NJ05083C, PaperMarco Bortoluzzi, Jesus Castro, Alberto Gobbo, Valentina Ferraro, Luca Pietrobon, Stefano Antoniutti Manganese(II) tetrahedral complexes having general formula [MnX2L2] (X = Cl, Br, I; L = 1,3-dimethyl-2-phenyl-1,3-diazaphospholidine-2-oxide) were isolated and characterized. The structures of the chloro- and bromo-derivatives were ascertained by single-crystal... The content of this RSS Feed (c) The Royal Society of Chemistry (Source: RSC - New J. Chem. latest articles)
Source: RSC - New J. Chem. latest articles - December 5, 2019 Category: Chemistry Authors: Marco Bortoluzzi Source Type: research

[ASAP] Mechanism and Kinetics Study on Low-Temperature NH < sub > 3 < /sub > -SCR Over Manganese –Cerium Composite Oxide Catalysts
Industrial& Engineering Chemistry ResearchDOI: 10.1021/acs.iecr.9b04780 (Source: Industrial and Engineering Chemical Research)
Source: Industrial and Engineering Chemical Research - December 5, 2019 Category: Chemistry Authors: Feng Lin †‡, Qiulin Wang*†‡, Jianchao Zhang†‡, Jing Jin†‡, Shengyong Lu§, and Jianhua Yan§ Source Type: research

Microstructural diversity of gallstones revealed by spectral microanalyses and their association with hepatic parameters
ConclusionsCharacterization of GS indicates that different types of stones have different characteristics in terms of microstructure, elemental composition, and distribution. Serum hepatic function test profiles showed an association with the compositions of GS. (Source: Indian Journal of Gastroenterology)
Source: Indian Journal of Gastroenterology - December 5, 2019 Category: Gastroenterology Source Type: research

IJERPH, Vol. 16, Pages 4912: Characterization and Arsenic Adsorption Behaviors of Water Treatment Residuals from Waterworks for Iron and Manganese Removal
g Dong Li Water treatment residuals (WTRs), obtained from a groundwater treatment plant for biological iron and manganese removal, were investigated and used as adsorbents for arsenic removal. The surface morphology and structural features of the WTRs were characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), and Brunauner&amp;ndash;Emmett&amp;ndash;Teller analysis (BET). Laboratory experiments were also carried out to test the adsorption capability and adaptability of WTRs on both As (III) and As (V) removal from the water. The results showed th...
Source: International Journal of Environmental Research and Public Health - December 5, 2019 Category: Environmental Health Authors: Huiping Zeng Tongda Qiao Yunxin Zhao Yaping Yu Jie Zhang Dong Li Tags: Article Source Type: research

Mutant p53 induces SIRT3/MnSOD axis to moderate ROS production in melanoma cells.
In this study, we used wild-type (A375) and mutant p53 (MeWo) melanoma cell lines to assess the regulation of the mitochondrial antioxidant manganese superoxide dismutase (MnSOD) by mutant p53. The effects of mutant p53 were evaluated by qPCR, immunoblotting, enzyme activity assay, cell proliferation assay, reactive oxygen species (ROS) assay after cellular transfection. We demonstrate that mutant p53 induces MnSOD expression, which is recovered by the ROS scavenger N-acetyl-l-cysteine. This suggests MnSOD induction as a defense mechanism of melanoma cells to counterbalance the pro-oxidant conditions induced by mutant p53....
Source: Archives of Biochemistry and Biophysics - December 5, 2019 Category: Biochemistry Authors: Torrens-Mas M, Cordani M, Mullappilly N, Pacchiana R, Riganti C, Palmieri M, Pons DG, Roca P, Oliver J, Donadelli M Tags: Arch Biochem Biophys Source Type: research

Photoelectrochemical OER activity by employing BiVO4 with manganese oxide co-catalysts
Phys. Chem. Chem. Phys., 2019, Accepted Manuscript DOI: 10.1039/C9CP05293C, PaperManjodh Kaur, Manjeet Chhetri, Chintamani Nagesa Ramachandra Rao Structure-activity relationship in electrochemical OER has been studied widely, but aspects of the photoelectrochemical (PEC) O2 evolution activity with different manganese oxides is not fully explored. In the present study... The content of this RSS Feed (c) The Royal Society of Chemistry (Source: RSC - Phys. Chem. Chem. Phys. latest articles)
Source: RSC - Phys. Chem. Chem. Phys. latest articles - December 4, 2019 Category: Chemistry Authors: Manjodh Kaur Source Type: research

[ASAP] Hydration of Closely Related Manganese and Magnesium Porphyrins in Aqueous Solutions: Ab Initio Quantum Mechanical Charge Field Molecular Dynamics Simulation Study
The Journal of Physical Chemistry BDOI: 10.1021/acs.jpcb.9b07639 (Source: Journal of Physical Chemistry B)
Source: Journal of Physical Chemistry B - December 4, 2019 Category: Chemistry Authors: Zobia Naz †, Syed Tarique Moin*†, and Thomas S. Hofer*‡ Source Type: research

[ASAP] MgO –Kaolin-Supported Manganese Ores as Oxygen Carriers for Chemical Looping Combustion
Industrial& Engineering Chemistry ResearchDOI: 10.1021/acs.iecr.9b05267 (Source: Industrial and Engineering Chemical Research)
Source: Industrial and Engineering Chemical Research - December 4, 2019 Category: Chemistry Authors: Lei Liu, Zhenshan Li, Lianjie Wang, Zehang Zhao, Ye Li, and Ningsheng Cai* Source Type: research

Manganese Acts upon Insulin/IGF Receptors to Phosphorylate AKT and Increase Glucose Uptake in Huntington ’s Disease Cells
We examined the combined effects of IGF-1 and/or Mn2+ treatments on AKT signaling in multiple HD cellular models. Mn2+ treatment potentiates p-IGFR/IR-dependent AKT phosphorylation under physiological (1 nM) or saturating (10 nM) concentrations of IGF-1 directly at the level of intracellular activation of IGFR/IR. Using a multi-pharmacological approach, we find that> 70 –80% of Mn2+-associated AKT signaling across rodent and human neuronal cell models is specifically dependent on IR/IGFR, versus other signaling pathways upstream of AKT activation. Mn2+-induced p-IGFR and p-AKT were diminished in HD cell models, an...
Source: Molecular Neurobiology - December 4, 2019 Category: Neurology Source Type: research

Light-driven anaerobic microbial oxidation of manganese
Nature, Published online: 04 December 2019; doi:10.1038/s41586-019-1804-0Anoxygenic photosynthetic microorganisms can biomineralize manganese oxides without molecular oxygen being present and without high-potential photosynthetic reaction centres, which sheds doubt on proposed dates for the origins of oxygenic photosynthetic metabolism. (Source: Nature AOP)
Source: Nature AOP - December 4, 2019 Category: Research Authors: Mirna Daye Vanja Klepac-Ceraj Mihkel Pajusalu Sophie Rowland Anna Farrell-Sherman Nicolas Beukes Nobumichi Tamura Gregory Fournier Tanja Bosak Source Type: research

Transport and distribution of manganese in tidal estuarine system in Taiwan.
Abstract Based on the observed heavy metals in the Danshui River estuarine system, the concentration of manganese (Mn) exceeds the water quality standards. High concentrations of manganese in aquatic environment can cause disturbances in the sodium balance, disturb the metabolism of carbohydrates, and impair the immunological functions of fish. Therefore, a three-dimensional heavy metal transport model was developed and incorporated into the hydrodynamics, salinity, and suspended sediment transport model to evaluate the concentration distribution of the heavy metal manganese (Mn) in the Danshui River estuarine sys...
Source: Environmental Science and Pollution Research International - December 4, 2019 Category: Environmental Health Authors: Liu WC, Ken PJ, Liu HM Tags: Environ Sci Pollut Res Int Source Type: research

Acute and long-term manganese exposure and subsequent accumulation in relation to idiopathic blindness in the American lobster, Homarus americanus.
Abstract Manganese (Mn) is a hypoxic reactive metal commonly found in marine sediments. Under hypoxic conditions the metal becomes fully reduced to Mn2+ and is biologically available to the benthic community for uptake. Mn is also a potent neurotoxin and it may play a role in the etiology of idiopathic blindness that has been observed in American lobsters. An acute exposure study was designed to expose American lobster, Homarus americanus, to 0, 20, 80, 150, and 300 mg L-1 (ppm) for 96 hs to explore disparities in Mn accumulation among several tissues: optic nerve, brain, hepatopancreas, muscle, hemolymph, g...
Source: Aquatic Toxicology - December 4, 2019 Category: Toxicology Authors: Ochs AT, Shields JD, Rice GW, Unger MA Tags: Aquat Toxicol Source Type: research