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https://www.readbyqxmd.com/read/28314210/options-and-limitations-for-bromate-control-during-ozonation-of-wastewater
#1
Fabian Soltermann, Christian Abegglen, Manfred Tschui, Sandro Stahel, Urs von Gunten
Wastewater treatment plants (WWTPs) are important point sources for micropollutants, which are harmful to freshwater organisms. Ozonation of wastewater is a powerful option to abate micropollutants, but may result in the formation of the potentially toxic oxidation by-product bromate in bromide-containing wastewaters. This study investigates options to reduce bromate formation during wastewater ozonation by (i) reducing the bromide concentration of the wastewater, (ii) lowering the ozone dose during wastewater treatment and (iii) adding hydrogen peroxide to limit the lifetime of ozone and quench the intermediates of the bromate formation pathway...
February 14, 2017: Water Research
https://www.readbyqxmd.com/read/28300572/the-potential-role-of-aspiration-in-the-asthmatic-airway
#2
Eoin B Hunt, Chris Ward, Stephen Power, Ashley Sullivan, Jeffrey Pearson, Susan Lapthorne, Paul M O'Byrne, Joseph Eustace, Barry J Plant, Michael M Maher, John MacSharry, Desmond M Murphy
BACKGROUND: Many asthmatics remain sub-optimally controlled despite current treatments. Reasons include comorbidities that could aggravate asthma, including gastro-esophageal reflux (GER). We aimed to investigate whether aspiration occurs in asthmatic patients and if so does it correlate with asthma control. METHODS: Patients had ACQ-7, FeNO, and spirometry performed to characterize their level of asthma control. Barium swallow with provocation was performed to assess for predisposition to aspiration...
March 11, 2017: Chest
https://www.readbyqxmd.com/read/28296152/flexible-and-powerful-strategy-for-qualitative-and-quantitative-analysis-of-valepotriates-in-valeriana-jatamansi-jones-using-hplc-with-linear-ion-trap-orbitrap-mass-spectrometry
#3
Chunguo Wang, Zhiquan Zheng, Xinqi Deng, Xiaojie Ma, Shengnan Wang, Jie Liu, Yong Liu, Jinli Shi
Valeriana jatamansi Jones is an important medicinal plant and its quality is closely related to its region of origin. In the current study, we utilized a flexible and powerful strategy for comprehensive evaluation of the quality diversity for 15 regions in China. The method was based on a hybrid linear ion trap-Orbitrap mass spectrometry platform. For structure characterization, fragmentation patterns were detected by analyzing a series of standard compounds using data dependent multistage mass spectrometry acquisition...
March 10, 2017: Journal of Separation Science
https://www.readbyqxmd.com/read/28282380/oral-delivery-of-double-stranded-rnas-induces-mortality-in-nymphs-and-adults-of-the-asian-citrus-psyllid-diaphorina-citri
#4
Diogo Manzano Galdeano, Michèle Claire Breton, João Roberto Spotti Lopes, Bryce W Falk, Marcos Antonio Machado
The Asian citrus psyllid (ACP), Diaphorina citri Kuwayama, is one of the most important citrus pests. ACP is the vector of the phloem-limited bacteria Candidatus Liberibacter americanus and Candidatus Liberibacter asiaticus, the causal agents of the devastating citrus disease huanglongbing (HLB). The management of HLB is based on the use of healthy young plants, eradication of infected plants and chemical control of the vector. RNA interference (RNAi) has proven to be a promising tool to control pests and explore gene functions...
2017: PloS One
https://www.readbyqxmd.com/read/28265297/the-microphenotron-a-robotic-miniaturized-plant-phenotyping-platform-with-diverse-applications-in-chemical-biology
#5
Thomas Burrell, Susan Fozard, Geoff H Holroyd, Andrew P French, Michael P Pound, Christopher J Bigley, C James Taylor, Brian G Forde
BACKGROUND: Chemical genetics provides a powerful alternative to conventional genetics for understanding gene function. However, its application to plants has been limited by the lack of a technology that allows detailed phenotyping of whole-seedling development in the context of a high-throughput chemical screen. We have therefore sought to develop an automated micro-phenotyping platform that would allow both root and shoot development to be monitored under conditions where the phenotypic effects of large numbers of small molecules can be assessed...
2017: Plant Methods
https://www.readbyqxmd.com/read/28255820/a-powerful-tool-for-assessing-distribution-and-fate-of-potentially-toxic-metals-ptms-in-soils-integration-of-laser-ablation-spectrometry-la-icp-ms-on-thin-sections-with-soil-micromorphology-and-geochemistry
#6
Fabio Scarciglia, Donatella Barca
The dynamic behavior and inherent spatial heterogeneity, at different hierarchic levels, of the soil system often make the spatial distribution of potentially toxic metals (PTMs) quite complex and difficult to assess correctly. This work demonstrates that the application of laser ablation spectrometry (LA-ICP-MS) to soil thin sections constitutes an ancillary powerful tool to well-established analytical methods for tracing the behavior and fate of potential soil contaminants at the microsite level. It allowed to discriminate the contribution of PTMs in distinct soil sub-components, such as parent rock fragments, neoformed, clay-enriched or humified matrix, and specific pedogenetic features of illuvial origin (unstained or iron-stained clay coatings) even at very low contents...
March 2, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28250654/insulin-plant-costus-pictus-extract-restores-thyroid-hormone-levels-in-experimental-hypothyroidism
#7
S Ashwini, Zachariah Bobby, M G Sridhar, C C Cleetus
BACKGROUND: The aim of the present study was to investigate the preventive effect of Costus pictus leaf extract in experimental hypothyroidism. MATERIALS AND METHODS: Forty male Wistar rats were randomly divided into four groups with ten rats in each group: Control (C), hypothyroid (H), control+extract (C+E), and hypothyroid+extract (H+E). Rats in C group did not receive any intervention throughout the experimental period. The rats in the C+E and H+E groups received pretreatment with C...
January 2017: Pharmacognosy Research
https://www.readbyqxmd.com/read/28250348/complexes-of-myo-inositol-hexakisphosphate-ip6-with-zinc-or-lanthanum-for-the-decorporation-of-radiocesium
#8
Kazuma Ogawa, Miho Aoki, Tadahisa Fukuda, Sumi Kadono, Tatsuto Kiwada, Akira Odani
Radioactive nuclides leak into the surrounding environment after nuclear power plant disasters, such as the Chernobyl accident and the Fukushima Daiichi Nuclear Power Plant disaster. Cesium-137 ((137)Cs) (t1/2=30.1 year), a water-soluble radionuclide with a long physical half-life, contaminates aquatic ecosystems and food products. In humans, (137)Cs concentrates in muscle tissue and has a long biological half-life, indicating it may be harmful. myo-Inositol-hexakisphosphate (IP6) is a compound found in grain, beans, and oil seeds...
2017: Chemical & Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/28230829/genetic-effects-in-children-exposed-in-prenatal-period-to-ionizing-radiation-after-the-chornobyl-nuclear-power-plant-accident
#9
Ye I Stepanova, V Yu Vdovenko, Zh A Misharina, V I Kolos, L P Mischenko
AIM: To study the genetic effects in children exposed to radiation in utero as a result of the Chornobyl nuclear power plant accident accounting the total radiation doses and equivalent radiation doses to the red bone marrow. MATERIALS AND METHODS: Incidence of minor developmental anomalies was studied in children exposed to radiation in utero (study group) and in the control group (1144 subjects surveyed in total). Cytogenetic tests using the method of differential G-banding of chromosomes were conducted in 60 children of both study and control groups (10-12-year-olds) and repeatedly in 39 adolescents (15-17-year-olds)...
December 2016: Experimental Oncology
https://www.readbyqxmd.com/read/28230821/circulating-hematopoietic-progenitor-cells-in-patients-affected-by-chornobyl-accident
#10
N M Bilko, I S Dyagil, I Z Russu, D I Bilko
High radiation sensitivity of stem cells and their ability to accumulate sublethal radiation damage provides the basis for investigation of hematopoietic progenitors using in vivo culture methodology. Unique samples of peripheral blood and bone marrow were derived from the patients affected by Chornobyl accident during liquidation campaign. AIM: To investigate functional activity of circulating hematopoietic progenitor cells from peripheral blood and bone marrow of cleanup workers in early and remote periods after the accident at Chornobyl nuclear power plant (CNPP)...
December 2016: Experimental Oncology
https://www.readbyqxmd.com/read/28230820/the-distribution-of-tp53-gene-polymorphisms-in-chronic-lymphocytic-leukemia-patients-sufferers-of-chornobyl-nuclear-power-plant-accident
#11
N I Bilous, I V Abramenko, A A Chumak, I S Dyagil, Z V Martina
Previous analyses in a cohort of Chornobyl cleanup workers revealed significantly increased radiation-related risk for all leukemia types, including chronic lymphocytic leukemia (CLL). Numerous investigations emphasized the significance of genetic susceptibility to the radiation carcinogenesis. The aim of the work was to study the distribution of TP53 single nucleotide polymorphisms (SNPs) in CLL patients exposed to ionizing radiation (IR) due to Chornobyl nuclear power plant accident and estimate their impact on disease development...
December 2016: Experimental Oncology
https://www.readbyqxmd.com/read/28223996/untargeted-metabotyping-lolium-perenne-reveals-population-level-variation-in-plant-flavonoids-and-alkaloids
#12
Mingshu Cao, Karl Fraser, Chris Jones, Alan Stewart, Thomas Lyons, Marty Faville, Brent Barrett
Metabolomics provides a powerful platform to characterize plants at the biochemical level, allowing a search for underlying genes and associations with higher level complex traits such as yield and nutritional value. Efficient and reliable methods to characterize metabolic variation in economically important species are considered of high value to the evaluation and prioritization of germplasm and breeding lines. In this investigation, a large-scale metabolomic survey was performed on a collection of diverse perennial ryegrass (Lolium perenne L...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28216234/optimal-modified-tracking-performance-for-mimo-networked-control-systems-with-communication-constraints
#13
Jie Wu, Zhu-Jun Zhou, Xi-Sheng Zhan, Huai-Cheng Yan, Ming-Feng Ge
This paper investigates the optimal modified tracking performance of multi-input multi-output (MIMO) networked control systems (NCSs) with packet dropouts and bandwidth constraints. Some explicit expressions are obtained by using co-prime factorization and the spectral decomposition technique. The obtained results show that the optimal modified tracking performance is related to the intrinsic properties of a given plant such as non-minimum phase (NMP) zeros, unstable poles, and their directions. Furthermore, the modified factor, packet dropouts probability and bandwidth also impact the optimal modified tracking performance of the NCSs...
February 16, 2017: ISA Transactions
https://www.readbyqxmd.com/read/28196651/trace-element-concentrations-in-reef-associated-sediments-of-koswari-island-gulf-of-mannar-biosphere-reserve-southeast-coast-of-india
#14
S Krishnakumar, S Ramasamy, N Chandrasekar, T Simon Peter, V Gopal, Prince S Godson, N S Magesh
Extensive field work was conducted in order to assess the sediment pollution level and potential ecological risk on coral reef ecosystem. Thirty three surface sample was collected using grid sampling technique. The calcium carbonate and organic matter were primarily controlled by the distribution of coral rubbles and seagrass meadows. The concentration of trace elements is higher than the crustal average in few locations and the same result was derived from index calculations. However, the significant concentration of lead was observed throughout the study area...
February 11, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/28193765/a-novel-chemical-inhibitor-of-aba-signaling-targets-all-aba-receptors
#15
Ya-Jin Ye, Lijuan Zhou, Xue Liu, Hao Liu, Deqiang Li, Minjie Cao, Haifeng Chen, Lin Xu, Jiankang Zhu, Yang Zhao
Abscisic acid (ABA), the most important stress-induced phytohormone, regulates seed dormancy, germination, plant senescence and abiotic stress response. ABA signaling is repressed by protein phosphatases 2C (PP2Cs), then ABA binds to its receptor of the PYR/PYL/RCAR family, which in turn inhibits PP2Cs and activates downstream ABA signaling. The agonist/antagonist of ABA receptors have the potential to unveil the ABA signaling machinery and to become lead compounds for agrochemicals, however, up to now, no broad-spectrum antagonists of ABA receptors blocking all PYR/PYL-PP2C interactions have been identified...
February 13, 2017: Plant Physiology
https://www.readbyqxmd.com/read/28170149/essential-oil-and-bioactive-compounds-variation-in-myrtle-myrtus-communis-l-as-affected-by-seasonal-variation-and-salt-stress
#16
Zeinab Vafadar Shoshtari, Mehdi Rahimmalek, Mohammad Reza Sabzalian, Hossein Hosseini
The effect of different NaCl concentrations (control, 2, 4 and 6 dS m-1) and three harvesting times in different seasons including spring (9 April), summer (5 July) and fall (23 September) was evaluated on essential oil yield, composition, phenolic, flavonoid content and antioxidant activity of myrtle. Essential oil yield ranged from 0.2% in control and fall to 1.6% in moderate salinity (4 dS m-1) and spring season. The main constituents obtained from GC-MS analysis were α-pinene, 1,8-cineole, limonene, linalool, α-terpineol and linalyl acetate in which α-pinene ranged from 11...
February 7, 2017: Chemistry & Biodiversity
https://www.readbyqxmd.com/read/28163712/seedusoon-a-new-software-program-to-improve-seed-stock-management-and-plant-line-exchanges-between-research-laboratories
#17
Céline Charavay, Stéphane Segard, Nathalie Pochon, Laurent Nussaume, Hélène Javot
Plant research is supported by an ever-growing collection of mutant or transgenic lines. In the past, a typical basic research laboratory would focus on only a few plant lines that were carefully isolated from collections of lines containing random mutations. The subsequent technological breakthrough in high-throughput sequencing, combined with novel and highly efficient mutagenesis techniques (including site-directed mutagenesis), has led to a recent exponential growth in plant line collections used by individual researchers...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28160173/effectiveness-of-so2-emission-control-policy-on-power-plants-in-the-yangtze-river-delta-china-post-assessment-of-the-11th-five-year-plan
#18
Jiani Tan, Joshua S Fu, Kan Huang, Cheng-En Yang, Guoshun Zhuang, Jian Sun
Facing the air pollution problems in China, emission control strategies have been implemented within the framework of national Five-Year Plan (FYP). According to the lack of post-assessment studies in the literature, this study assessed the effectiveness of the SO2 emission control policies on power plants after the 11th FYP (2006-2010) by modeling emission control scenarios. The idealized emission control policy (the PS90 scenario with assumption of 90% SO2 emission reduction from power plants) could reduce the SO2 and SO4(2-) concentrations by about 51 and 14%, respectively, over the Yangtze River Delta region...
February 3, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28149303/impact-of-leaf-traits-on-temporal-dynamics-of-transpired-oxygen-isotope-signatures-and-its-impact-on-atmospheric-vapor
#19
Maren Dubbert, Angelika Kübert, Christiane Werner
Oxygen isotope signatures of transpiration (δ E ) are powerful tracers of water movement from plant to global scale. However, a mechanistic understanding of how leaf morphological/physiological traits effect δ E is missing. A laser spectrometer was coupled to a leaf-level gas-exchange system to measure fluxes and isotopic signatures of plant transpiration under controlled conditions in seven distinct species (Fagus sylvatica, Pinus sylvestris, Acacia longifolia, Quercus suber, Coffea arabica, Plantago lanceolata, Oxalis triangularis)...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28139322/the-local-impact-of-a-coal-fired-power-plant-on-inorganic-mercury-and-methyl-mercury-distribution-in-rice-oryza-sativa-l
#20
Xiaohang Xu, Bo Meng, Chao Zhang, Xinbin Feng, Chunhao Gu, Jianyang Guo, Kevin Bishop, Zhidong Xu, Sensen Zhang, Guangle Qiu
Emission from coal-fired power plants is one of the major anthropogenic sources of mercury (Hg) in the environment, because emitted Hg can be quickly deposited nearby the source, attention is paid to the effects of coal-burning facilities on levels of toxic methyl-mercury (MeHg) in biota near such sources. Since rice is an agricultural crop that can bio-accumulate MeHg, the potential effects of a large Hg-emitting coal-fired power plant in Hunan Province, China on both inorganic Hg (Hg(II)) and MeHg distributions in rice was investigated...
April 2017: Environmental Pollution
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