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Stefan Suckert, Inke Jess, Christian Näther
The asymmetric unit of the title compound, [Ni(NCS)2(C5H4ClN)2(H2O)2], consists of one nickel(II) cation that is located on a center of inversion and one thio-cyanate anion, one water mol-ecule and one 2-chloro-pyridine ligand all occupying general positions. The Ni(II) cation is octa-hedrally coordinated by two terminal N-bound thio-cyanato ligands, two aqua ligands and two N-bound 2-chloro-pyridine ligands into discrete complexes. Individual complexes are linked by inter-molecular O-H⋯S and O-H⋯Cl hydrogen-bonding inter-actions into a layered network extending parallel to the bc plane...
October 1, 2016: Acta Crystallographica. Section E, Crystallographic Communications
A Dominic Fortes, Christopher M Howard, Ian G Wood, Matthias J Gutmann
Single crystals of glycine zinc sulfate penta-hydrate [systematic name: hexa-aqua-zinc tetra-aquadiglycinezinc bis-(sulfate)], [Zn(H2O)6][Zn(C2H5NO2)2(H2O)4](SO4)2, have been grown by isothermal evaporation from aqueous solution at room temperature and characterized by single-crystal neutron diffraction. The unit cell contains two unique ZnO6 octa-hedra on sites of symmetry -1 and two SO4 tetra-hedra with site symmetry 1; the octa-hedra comprise one [tetra-aqua-diglycine zinc](2+) ion (centred on one Zn atom) and one [hexa-aqua-zinc](2+) ion (centred on the other Zn atom); the glycine zwitterion, NH3(+)CH2COO(-), adopts a monodentate coordination to the first Zn atom...
October 1, 2016: Acta Crystallographica. Section E, Crystallographic Communications
Monserrat Alfonso, Helen Stoeckli-Evans
The title isotypic complexes, bis-[μ-5,6-bis-(pyridin-2-yl)pyrazine-2,3-di-carboxylato]-κ(4)N(1),O(2),N(6):O(3);κ(4)O(3):N(1),O(2),N(6)-bis-[di-aqua-manganese(II)] tetra-hydrate, [Mn2(C16H8N4O4)2(H2O)4]·4H2O, (I), and bis-[μ-5,6-bis-(pyridin-2-yl)pyrazine-2,3-di-carboxyl-ato]-κ(4)N(1),O(2),N(6):O(3);κ(4)O(3):N(1),O(2),N(6)-bis-[di-aqua-iron(II)] tetrahydrate, [Fe2(C16H8N4O4)2(H2O)4]·4H2O, (II), are, respectively, the mangan-ese(II) and iron(II) complexes of the ligand 5,6-bis-(pyridin-2-yl)-pyrazine-2,3-di-carb-oxy-lic acid...
October 1, 2016: Acta Crystallographica. Section E, Crystallographic Communications
Nurcan Akduran, Hacali Necefoğlu, Ömer Aydoğdu, Tuncer Hökelek
In the title complex, [Zn(C8H4NO2)2(C10H14N2O)2(H2O)2], the Zn(II) cation, located on an inversion centre, is coordinated by two water mol-ecules, two 4-cyano-benzoate (CB) anions and two di-ethyl-nicotinamide (DENA) ligands in a distorted N2O4 octa-hedral geometry. In the mol-ecule, the dihedral angle between the planar carboxyl-ate group and the adjacent benzene ring is 9.50 (14)°, while the benzene and pyridine rings are oriented at a dihedral angle of 56.99 (5)°. The water mol-ecules exhibit both an intra-molecular hydrogen bond [to the non-coordinating carboxyl-ate O atom, enclosing an S(6) hydrogen-bonding motif, where O⋯O = 2...
October 1, 2016: Acta Crystallographica. Section E, Crystallographic Communications
Qinghuan Xu, Lin Yang, Wangting Yang, Yan Bai, Ping Hou, Jingxian Zhao, Lv Zhou, Zhaojiang Zuo
Eutrophication promotes massive growth of cyanobacteria and algal blooms, which can poison other algae and reduce biodiversity. To investigate the differences in multiple nitrogen (N) sources in eutrophicated water on the emission of volatile organic compounds (VOCs) from cyanobacteria, and their toxic effects on other algal growth, we analyzed VOCs emitted from Microcystis flos-aquae with different types and concentrations of nitrogen, and determined the effects under Normal-N and Non-N conditions on Chlorella vulgaris...
October 11, 2016: Ecotoxicology and Environmental Safety
Alberto Fabrizio, François P Rotzinger
The water exchange reaction of the americyl(VI) aqua ion was investigated with quantum chemical methods, density functional theory (DFT), and wave function theory (WFT). Associative and dissociative substitution mechanisms were studied, whereby DFT produced inaccurate results for the associative mechanism in contrast to WFT. The Gibbs activation energies (ΔG(‡)) for the dissociative (D) and the associative interchange (Ia) mechanisms, computed with WFT taking into account static and dynamic electron correlation, near-degeneracy, and spin-orbit coupling, are equal within the error limits of the calculations...
October 14, 2016: Inorganic Chemistry
S-H Zhang, P-Y Xu, J-J Chang
The algal growth and physiological characters of Aphanizomenon flos-aquae were studied under the stress of Sagittaria sagittifolia extract. The results showed that the growth of A. flos-aquae was significantly inhibited by S. sagittifolia extract. The exopolysaccharide (EPS), total soluble protein, intracellular phosphorus (o-PO4-P) contents and malondialdehyde (MDA) contents in A. flos-aquae cells increased significantly. These results suggested that A. flos-aquae can adapt to stress by increasing its normal metabolic activity...
October 13, 2016: Bulletin of Environmental Contamination and Toxicology
S Dahms, N J Baker, R Greenfield
This study aimed to determine the ecological risk posed by metals, in sediments from the Nyl River system in Limpopo, South Africa. Metals were extracted from sediment samples by aqua regia microwave digestion and were analysed using standard ICP-OES techniques. The ecological risk indices applied to the data included Contamination Factor, Pollution Load Index, Geo-accumulation Index and Enrichment Factor. The results showed that the levels of Ni at STW and NYL in the HF period exceeded the Canadian Sediment Quality Guidelines by a factor of 1...
October 6, 2016: Ecotoxicology and Environmental Safety
Brandon Michael Henry, Krzysztof A Tomaszewski, Piravin Kumar Ramakrishnan, Joyeeta Roy, Jens Vikse, Marios Loukas, R Shane Tubbs, Jerzy A Walocha
BACKGROUND: Critical appraisal of anatomical studies is essential before the evidence from them undergoes meta-epidemiological synthesis. However, no instrument for appraising anatomical studies with inherent applicability to different study designs is available. We aim to develop a generic yet comprehensive tool for assessing the quality of anatomical studies using a formal consensus method. MATERIALS AND METHODS: The study steering committee formulated an initial conceptual design and generated items for a preliminary tool on the basis of a literature review and expert opinion...
October 7, 2016: Clinical Anatomy
Marcos Gil-Sepulcre, Jordan C Axelson, Joan Aguiló, Lluís Solà-Hernández, Laia Francàs, Albert Poater, Lluís Blancafort, Jordi Benet-Buchholz, Gonzalo Guirado, Lluís Escriche, Antoni Llobet, Roger Bofill, Xavier Sala
A Ru(II)-pentadentate polypyridyl complex [Ru(II)(κ-N(5)-bpy2PYMe)Cl](+) (1(+), bpy2PYMe = 1-(2-pyridyl)-1,1-bis(6-2,2'-bipyridyl)ethane) and its aqua derivative [Ru(II)(κ-N(5)-bpy2PYMe)(H2O)](2+) (2(2+)) were synthesized and characterized by experimental and computational methods. In MeOH, 1(+) exists as two isomers in different proportions, cis (70%) and trans (30%), which are interconverted under thermal and photochemical conditions by a sequence of processes: chlorido decoordination, decoordination/recoordination of a pyridyl group, and chlorido recoordination...
October 7, 2016: Inorganic Chemistry
Tianhao Zhang, Gang Liu, Zhongmin Zhu, Wei Gong, Yuxi Ji, Yusi Huang
The real-time estimation of ambient particulate matter with diameter no greater than 2.5 μm (PM2.5) is currently quite limited in China. A semi-physical geographically weighted regression (GWR) model was adopted to estimate PM2.5 mass concentrations at national scale using the Aqua Moderate Resolution Imaging Spectroradiometer (MODIS) Aerosol Optical Depth product fused by the Dark Target (DT) and Deep Blue (DB) algorithms, combined with meteorological parameters. The fitting results could explain over 80% of the variability in the corresponding PM2...
September 30, 2016: International Journal of Environmental Research and Public Health
Yang-Hsin Hsu, Takayoshi Tagami, Kana Matsunaga, Masayuki Okuyama, Takashi Suzuki, Naonobu Noda, Masahiko Suzuki, Hanako Shimura
Because structural modifications of flavonoids are closely related to their properties such as stability, solubility, flavor and coloration, characterizing the enzymes that catalyze the modification reactions can be useful for engineering agriculturally beneficial traits of flavonoids. In this work, we examined the enzymes involved in the modification pathway of highly glycosylated and acylated anthocyanins that accumulate in Lobelia erinus. Cultivar Aqua Blue (AB) of L. erinus is blue-flowered and accumulates delphinidin 3-O-p-coumaroylrutinoside-5-O-malonylglucoside-3'5'-O-dihydroxycinnamoylglucoside (lobelinins) in its petals...
October 3, 2016: Plant Journal: for Cell and Molecular Biology
Noushin Arfatahery, Abolfazl Davoodabadi, Taranehpeimaneh Abedimohtasab
Staphylococcus aureus is one of the most common causes of seafood-borne diseases worldwide, which are attributable to the contamination of food by preformed enterotoxins. In this study, a total of 206 (34.3%) Staphylococcus aureus strains were obtained from 600 fish and shrimp samples and were tested for their antimicrobial susceptibility. We assessed the prevalence of the genes responsible for the staphylococcal enterotoxins (SEA, SEB) and toxic shock syndrome toxin 1 (TSST-1) genes. The results indicated that 34% of aqua food samples were contaminated with S...
October 3, 2016: Scientific Reports
Shuyuan Liu, Zhi Yu, Hongkai Zhu, Wei Zhang, Yuqiong Chen
BACKGROUND: Natural products have being used as potential inhibitors against carbohydrate-hydrolyzing enzymes to treat diabetes mellitus. Chinese dark tea has various interesting bioactivities. In this study, the active compounds from Qingzhuan dark tea were separated and their anti-diabetic activity was examined using an in vitro enzymatic model. METHODS: The chloroform, ethyl acetate, n-butanol, sediment and residual aqua fractions of a Chinese dark tea (Qingzhuan tea) were prepared by successively isolating the water extract with different solvents and their in vitro inhibitory activities against α-glucosidase were assessed...
September 29, 2016: BMC Complementary and Alternative Medicine
T A Seckin, N C Newman, S Seckin
No abstract text is available yet for this article.
November 2015: Journal of Minimally Invasive Gynecology
Junqiang Sun, Xiaoxiong Xiong, Eugene Waluschka, Menghua Wang
The Visible Infrared Imaging Radiometer Suite (VIIRS) is one of five instruments onboard the Suomi National Polar-Orbiting Partnership (SNPP) satellite that launched from Vandenberg Air Force Base, California, on October 28, 2011. It is a whiskbroom radiometer that provides ±56.28° scans of the Earth view. It has 22 bands, among which 14 are reflective solar bands (RSBs). The RSBs cover a wavelength range from 410 to 2250 nm. The RSBs of a remote sensor are usually sensitive to the polarization of incident light...
September 20, 2016: Applied Optics
Sabina Dołęgowska, Agnieszka Gałuszka, Zdzisław M Migaszewski
We modified the robust analysis of variance (RANOVA) method to calculate sampling uncertainty of selected trace elements determined in soil samples from two heterogeneous remote historic metal ore mining areas. Classical RANOVA is down-weighting the outlying values by replacing them during the calculation process with mean ± c·σ r . Because the arithmetic mean is greatly influenced by outliers, it cannot represent a robust statistic. The main novel contribution of this work is use of median value that is independent on outliers and replace all extreme values during the calculation process with median ± 2·σ r ...
October 2016: Environmental Monitoring and Assessment
Fatih Doğan, Cemal Alper Kemaloğlu
BACKGROUND: Aqua regia, a highly corrosive mixture of concentrated nitric acid and hydrochloric acid, is used to dissolve various metals such as gold and platinum that are not soluble in other types of acids. For the first time in the literature, we report the adverse effects that were observed following the utilization of this strong acid solution in the treatment of various skin lesions. METHODS: Between 2010 and 2013, 43 patients (55.8 % female) with a mean age of 40...
2016: SpringerPlus
Fábio Marcelo Breunig, Waterloo Pereira Filho, Lênio Soares Galvão, Flávio Wachholz, Maria Angélica Gonçalves Cardoso
Reservoirs are important in Brazil for the production of hydroelectric power and human water consumption. The objective was to evaluate the variability of total suspended solids (TSS) and chlorophyll-a as well as the rainfall/temperature and land use impacts on these optically active constituents (OAC). The study area is the Passo Real reservoir in south Brazil. The methodology was divided in four steps. First, we used wavelet to detect anomalous periods of rainfall and temperature (2002-2014). Second, we carried out 12 field campaigns to obtain in situ measurements for limnological characterization (2009-2010)...
September 14, 2016: Science of the Total Environment
Shuang Xu, James E T Smith, J Mathias Weber
We report the electronic spectra of mass selected [(bpy)(tpy)Ru-OH2](2+)·(H2O)n clusters (bpy = 2,2'-bipyridine, tpy =2,2':6'2″-terpyridine, n = 0-4) in the spectral region of their metal-to-ligand charge transfer bands. The spectra of the mono- and dihydrate clusters exhibit partially resolved individual electronic transitions. The water network forming at the aqua ligand leads to a rapid solvatochromic shift of the peak of the band envelope: addition of only four solvent water molecules can recover 78% of the solvatochromic shift in bulk solution...
October 6, 2016: Journal of Physical Chemistry. A
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