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https://www.readbyqxmd.com/read/28778030/development-and-application-of-a-novel-fluorescent-nanosensor-based-on-fese-quantum-dots-embedded-silica-molecularly-imprinted-polymer-for-the-rapid-optosensing-of-cyfluthrin
#1
Xunjia Li, Hai-Feng Jiao, Xi-Zhi Shi, Aili Sun, Xiujuan Wang, Jiye Chai, De-Xiang Li, Jiong Chen
A novel molecularly imprinted silica layer appended to FeSe quantum dots (MIP-FeSe-QDs) was fabricated and utilized as a recognition element to develop a selective and sensitive fluorescent nanosensor for cyfluthrin (CYF) determination. The MIP-FeSe-QDs were characterized by fluorescence spectrometry, scanning electron microscopy, transmission electron microscopy, and Fourier transform infrared spectroscopy. Excellent selectivity and high sensitivity of MIP-FeSe-QDs to CYF molecules were observed based on the fluorescence quenching of FeSe-QDs...
July 29, 2017: Biosensors & Bioelectronics
https://www.readbyqxmd.com/read/28734603/determination-of-volatile-organic-compounds-in-pen-inks-by-a-dynamic-headspace-needle-trap-device-combined-with-gas-chromatography-mass-spectrometry
#2
Xiaohuan Zang, Weiqian Liang, Qingyun Chang, Tong Wu, Chun Wang, Zhi Wang
Some harmful volatile organic compounds (VOCs), such as methylbenzene, ethylbenzene, xylene, chlorobenzene and bromobenzene, are the commonly found chemicals in pen inks. In this work, a dynamic headspace needle-trap device (D-HS-NTD) with a ZIF-8-derived nanoporous carbon (ZIF-8-NPC) as the adsorbent was developed for the extraction of some VOCs in different pen inks prior to GC-MS detection. The main important influencing experimental parameters including the flow rate of the purge gas N2, extraction temperature, extraction time, desorption temperature and desorption time for the extraction were optimized to obtain a high extraction efficiency...
July 11, 2017: Journal of Chromatography. A
https://www.readbyqxmd.com/read/28697963/a-new-model-for-including-the-effect-of-fly-ash-on-biochemical-methane-potential
#3
Pablo Gertner, César Huiliñir, Paula Pinto-Villegas, Alejandra Castillo, Silvio Montalvo, Lorna Guerrero
The modelling of the effect of trace elements on anaerobic digestion, and specifically the effect of fly ash, has been scarcely studied. Thus, the present work was aimed at the development of a new function that allows accumulated methane models to predict the effect of FA on the volume of methane accumulation. For this, purpose five fly ash concentrations (10, 25, 50, 250 and 500mg/L) using raw and pre-treated sewage sludge were used to calibrate the new function, while three fly ash concentrations were used (40, 150 and 350mg/L) for validation...
July 8, 2017: Waste Management
https://www.readbyqxmd.com/read/28401168/the-association-of-a-genetic-variant-in-scaf8-cnksr3-with-diabetic-kidney-disease-and-diabetic-retinopathy-in-a-chinese-population
#4
Li Jin, Tao Wang, Song Jiang, Miao Chen, Rong Zhang, Cheng Hu, Weiping Jia, Zhihong Liu
Background. Genome-wide association studies found rs955333 located in 6q25.2 was associated with diabetic kidney disease in multiple ethnic populations, including European Americans, African Americans, and Mexican Americans. We aimed to investigate the association between the variant rs955333 in SCAF8-CNKSR3 and DKD susceptibility in Chinese type 2 diabetes patients. Methods. The variant rs955333 was genotyped in 1884 Chinese type 2 diabetes patients. Associations of the variant rs955333 with DKD and DR susceptibility and related quantitative traits were evaluated...
2017: Journal of Diabetes Research
https://www.readbyqxmd.com/read/28365721/pcppi-a-comprehensive-database-for-the-prediction-of-penicillium-crop-protein-protein-interactions
#5
Junyang Yue, Danfeng Zhang, Rongjun Ban, Xiaojing Ma, Danyang Chen, Guangwei Li, Jia Liu, Michael Wisniewski, Samir Droby, Yongsheng Liu
Penicillium expansum , the causal agent of blue mold, is one of the most prevalent post-harvest pathogens, infecting a wide range of crops after harvest. In response, crops have evolved various defense systems to protect themselves against this and other pathogens. Penicillium -crop interaction is a multifaceted process and mediated by pathogen- and host-derived proteins. Identification and characterization of the inter-species protein-protein interactions (PPIs) are fundamental to elucidating the molecular mechanisms underlying infection processes between P...
January 1, 2017: Database: the Journal of Biological Databases and Curation
https://www.readbyqxmd.com/read/28190370/variations-in-the-cost-of-formal-and-informal-health-care-for-patients-with-advanced-chronic-disease-and-refractory-breathlessness-a-cross-sectional-secondary-analysis
#6
Mendwas D Dzingina, Charles C Reilly, Claudia Bausewein, Caroline J Jolley, John Moxham, Paul McCrone, Irene J Higginson, Deokhee Yi
BACKGROUND: Refractory breathlessness in advanced chronic disease leads to high levels of disability, anxiety and social isolation. These result in high health-resource use, although this is not quantified. AIMS: To measure the cost of care for patients with advanced disease and refractory breathlessness and to identify factors associated with high costs. DESIGN: A cross-sectional secondary analysis of data from a randomised controlled trial...
April 2017: Palliative Medicine
https://www.readbyqxmd.com/read/27769466/metal-organic-frameworks-mofs-for-magnetic-solid-phase-extraction-of-pyrazole-pyrrole-pesticides-in-environmental-water-samples-followed-by-hplc-dad-determination
#7
Jiping Ma, Zhidan Yao, Liwei Hou, Wenhui Lu, Qipeng Yang, Jinhua Li, Lingxin Chen
Magnetic metal-organic frameworks (MOFs, [MIL-101]) were prepared and used as magnetic solid-phase extraction (MSPE) adsorbents for preconcentration of four kinds of pyrazole/pyrrole pesticides (flusilazole, fipronil, chlorfenapyr, and fenpyroximate) in environmental water samples, followed by high-performance liquid chromatography-diode-array detector (HPLC-DAD) determination. Several variables affecting MSPE efficiency were systematically investigated, including amount of MIL-101, extraction time, sample pH, salt concentration, type of desorption solvent and desorption number of times...
December 1, 2016: Talanta
https://www.readbyqxmd.com/read/27639523/design-and-construction-of-nanoscale-material-for-ultrasonic-assisted-adsorption-of-dyes-application-of-derivative-spectrophotometry-and-experimental-design-methodology
#8
Ahmad Reza Bagheri, Mehrorang Ghaedi, Arash Asfaram, Ramin Jannesar, Alireza Goudarzi
Response surface methodology (RSM) based on central rotatable experimental design was used to investigate the effect of ultrasound assisted simultaneous adsorption process variables on Cu: ZnS-NPs-AC from aqueous solution. Cu: ZnS-NPs-AC was characterized using field emission scanning electron microscopy (FE-SEM), Energy Dispersive X-ray Spectroscopy (EDX) and X-ray diffraction (XRD). To overcome the severe methylene blue (MB) and brilliant green (BG) dyes spectral overlapping, derivative spectrophotometric method were successfully applied for the simultaneous determination of dyes in their binary solutions...
March 2017: Ultrasonics Sonochemistry
https://www.readbyqxmd.com/read/27568578/quantitative-analysis-of-biomarkers-of-liver-and-kidney-injury-in-serum-and-urine-using-ultra-fast-liquid-chromatography-with-tandem-mass-spectrometry-coupled-with-a-hydrophilic-interaction-chromatography-column-application-to-monitor-injury-induced-by-euphorbiae
#9
Yuanyuan Zhang, Liqiang Gu, Yu Jiang, Kaishun Bi, Xiaohui Chen
Fast and sensitive monitoring of drug-induced liver and kidney injury in early stage is beneficial. An ultrafast liquid chromatography with tandem mass spectrometry assay was developed and validated to simultaneously determine ten endogenous biomarkers in serum and urine, including hippuric acid, phenylacetylglycine, 5-oxoproline, cholic acid, taurine, indoleacetic acid, 3-indoxyl sulfate, guanidinosuccinic acid, guanidinoacetic acid and uric acid. A CAPCELL CORE PC column (2.1 × 150 mm, 2.7 μm) was adopted for analytes separation...
October 2016: Journal of Separation Science
https://www.readbyqxmd.com/read/27181646/collision-cross-section-prediction-of-deprotonated-phenolics-in-a-travelling-wave-ion-mobility-spectrometer-using-molecular-descriptors-and-chemometrics
#10
Gerard Bryan Gonzales, Guy Smagghe, Sofie Coelus, Dieter Adriaenssens, Karel De Winter, Tom Desmet, Katleen Raes, John Van Camp
The combination of ion mobility and mass spectrometry (MS) affords significant improvements over conventional MS/MS, especially in the characterization of isomeric metabolites due to the differences in their collision cross sections (CCS). Experimentally obtained CCS values are typically matched with theoretical CCS values from Trajectory Method (TM) and/or Projection Approximation (PA) calculations. In this paper, predictive models for CCS of deprotonated phenolics were developed using molecular descriptors and chemometric tools, stepwise multiple linear regression (SMLR), principal components regression (PCR), and partial least squares regression (PLS)...
June 14, 2016: Analytica Chimica Acta
https://www.readbyqxmd.com/read/26814366/magnetic-hydrophilic-lipophilic-balance-sorbent-for-efficient-extraction-of-chemical-warfare-agents-from-water-samples
#11
Varoon Singh, Ajay Kumar Purohit, Sridhar Chinthakindi, Raghavender Goud D, Vijay Tak, Deepak Pardasani, Anchal Roy Shrivastava, Devendra Kumar Dubey
Magnetic hydrophilic-lipophilic balance (MHLB) hybrid resin was prepared by precipitation polymerization using N-vinylpyrrolidone (PVP) and divinylbenzene (DVB) as monomers and Fe2O3 nanoparticles as magnetic material. These resins were successfully applied for the extraction of chemical warfare agents (CWAs) and their markers from water samples through magnetic dispersive solid-phase extraction (MDSPE). By varying the ratios of monomers, resin with desired hydrophilic-lipophilic balance was prepared for the extraction of CWAs and related esters of varying polarities...
February 19, 2016: Journal of Chromatography. A
https://www.readbyqxmd.com/read/26626889/in-vitro-dynamic-pharmacokinetic-pharmacodynamic-pk-pd-study-and-copd-of-marbofloxacin-against-haemophilus-parasuis
#12
Jian Sun, Xia Xiao, Rui-Juan Huang, Tao Yang, Yi Chen, Xi Fang, Ting Huang, Yu-Feng Zhou, Ya-Hong Liu
BACKGROUND: Haemophilus parasuis (H. parasuis) can invade the body and cause systemic infection under stress conditions. Marbofloxacin has been recommended for the treatment of swine infections. However, few studies have investigated the PK/PD characteristics and PK/PD cutoff (COPD) of this drug against H. parasuis. RESULTS: MICs of marbofloxacin against 198 H. parasuis isolates were determined. The MIC50 and MIC90 were 2 and 8 mg/L, respectively. An in vitro dynamic PK/PD model was established to study the PK/PD relationship of marbofloxacin against H...
2015: BMC Veterinary Research
https://www.readbyqxmd.com/read/26106444/structural-and-spectral-investigations-of-the-recently-synthesized-chalcone-e-3-mesityl-1-naphthalen-2-yl-prop-2-en-1-one-a-potential-chemotherapeutic-agent
#13
Assem Barakat, Abdullah Mohammed Al-Majid, Saied M Soliman, Yahia Nasser Mabkhot, M Ali, Hazem A Ghabbour, Hoong-Kun Fun, Abdul Wadood
BACKGROUND: Chalcones (1,3-diaryl-2-propen-1-ones, represent an important subgroup of the polyphenolic family, which have shown a wide spectrum of medical and industrial application. Due to their redundancy in plants and ease of preparation, this category of molecules has inspired considerable attention for potential therapeutic uses. They are also effective in vivo as anti-tumor promoting, cell proliferating inhibitors and chemo preventing agents. RESULTS: Synthesis and molecular structure investigation of (E)-3-mesityl-1-(naphthalen-2-yl) prop-2-en-1-one (3) is reported...
2015: Chemistry Central Journal
https://www.readbyqxmd.com/read/26076132/transcriptional-slippage-and-rna-editing-increase-the-diversity-of-transcripts-in-chloroplasts-insight-from-deep-sequencing-of-vigna-radiata-genome-and-transcriptome
#14
Ching-Ping Lin, Chia-Yun Ko, Ching-I Kuo, Mao-Sen Liu, Roland Schafleitner, Long-Fang Oliver Chen
We performed deep sequencing of the nuclear and organellar genomes of three mungbean genotypes: Vigna radiata ssp. sublobata TC1966, V. radiata var. radiata NM92 and the recombinant inbred line RIL59 derived from a cross between TC1966 and NM92. Moreover, we performed deep sequencing of the RIL59 transcriptome to investigate transcript variability. The mungbean chloroplast genome has a quadripartite structure including a pair of inverted repeats separated by two single copy regions. A total of 213 simple sequence repeats were identified in the chloroplast genomes of NM92 and RIL59; 78 single nucleotide variants and nine indels were discovered in comparing the chloroplast genomes of TC1966 and NM92...
2015: PloS One
https://www.readbyqxmd.com/read/26012639/cost-effectiveness-of-intra-arterial-treatment-as-an-adjunct-to-intravenous-tissue-type-plasminogen-activator-for-acute-ischemic-stroke
#15
RANDOMIZED CONTROLLED TRIAL
Michelle H Leppert, Jonathan D Campbell, Jennifer R Simpson, James F Burke
BACKGROUND AND PURPOSE: The objective of this study was to determine the cost-effectiveness of intra-arterial treatment within the 0- to 6-hour window after intravenous tissue-type plasminogen activator within 0- to 4.5-hour compared with intravenous tissue-type plasminogen activator alone, in the US setting and from a social perspective. METHODS: A decision analytic model estimated the lifetime costs and outcomes associated with the additional benefit of intra-arterial therapy compared with standard treatment with intravenous tissue-type plasminogen activator alone...
July 2015: Stroke; a Journal of Cerebral Circulation
https://www.readbyqxmd.com/read/25911160/spectrophotometric-determination-of-pico-molar-level-of-hydrazine-by-using-alizarin-red-in-water-and-urine-samples
#16
Abraham Daniel Arulraj, Muthunanthevar Vijayan, Vairathevar Sivasamy Vasantha
In this paper, very simple and rapid sensor has been developed for the spectrophotometric determination of pico-molar level of hydrazine using Alizarin red. There was a decrease of optical intensity of the probe in the presence of hydrazine. The LOD is calculated from the linear graph between 5-100 pM as 0.66 pM of hydrazine which is well below the risk level proposed by Agency for Toxic Substance and Disease Registry. The probe selectivity for the detection of hydrazine was tested in the presence of commonly encountered metal ions and anions...
September 5, 2015: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
https://www.readbyqxmd.com/read/25818473/performance-evaluation-of-sd-a1ccare-as-a-hba1c-analyzer-for-point-of-care-testing
#17
COMPARATIVE STUDY
Kyunghoon Lee, Sun-Hee Jun, Minje Han, Sang Hoon Song, Kyoung Un Park, Woon Heung Song, Junghan Song
OBJECTIVES: Some studies have shown that a rapid feedback of HbA1c results is helpful for controlling plasma glucose levels. Point-of-care (POC) instruments that are fast, portable, and easy to use are suitable for rapid determination of HbA1c levels. Here, we evaluated the analytical performance of a newly developed POC HbA1c analyzer, SD A1cCare (SD Biosensor, Inc.). DESIGN AND METHODS: The precision, linearity, and correlation with the Variant II Turbo instrument (Bio-Rad Laboratories, Inc...
June 2015: Clinical Biochemistry
https://www.readbyqxmd.com/read/25476282/rapid-analysis-of-trace-organic-compounds-in-water-by-automated-online-solid-phase-extraction-coupled-to-liquid-chromatography-tandem-mass-spectrometry
#18
Tarun Anumol, Shane A Snyder
A fully automated online solid-phase extraction (SPE) with directly coupled liquid chromatography-tandem mass spectrometry (LC-MS/MS) method for analysis of 34 trace organic compounds in diverse water matrices has been developed. The current method offers several advantages over traditional offline SPE methods including low sample volume (1.7 mL), decreased solvent use, higher throughput, and increased reproducibility. The method uses simultaneous positive and negative ESI for analysis of all compounds in one injection, which reduces cycle time (extraction+analysis) to <15 min...
January 2015: Talanta
https://www.readbyqxmd.com/read/25037021/design-crystal-structures-and-magnetic-properties-of-anionic-salts-containing-fullerene-c%C3%A2-%C3%A2-and-indium-iii-bromide-phthalocyanine-radical-anions
#19
Dmitri V Konarev, Alexey V Kuzmin, Salavat S Khasanov, Akihiro Otsuka, Hideki Yamochi, Gunzi Saito, Rimma N Lyubovskaya
Two salts containing fullerene C60 and indium(III) bromide phthalocyanine (Pc) radical anions have been obtained as single crystals: (TBA(+))3(C60˙(-)){In(III)(Br)(Pc)˙(-)}(Br(-))·C6H4Cl2 (1) and (TEA(+))2(C60˙(-)){In(III)(Br)(Pc)˙(-)}·C6H4Cl2·C6H14 (2) where TBA(+) and TEA(+) are tetrabutyl- and tetraethylammonium cations, respectively. The presence of both radical anions is supported by spectra of 1 and 2 in the NIR and IR-ranges. The salts contain zigzag C60˙(-) chains with 10.136 and 10.383 Å center-to-center (ctc) distances in 1 and a uniform ctc distance of 10...
September 14, 2014: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/24971791/the-clinical-and-economic-impact-of-exacerbations-of-chronic-obstructive-pulmonary-disease-a-cohort-of-hospitalized-patients
#20
Francesco Blasi, Giancarlo Cesana, Sara Conti, Virginio Chiodini, Stefano Aliberti, Carla Fornari, Lorenzo Giovanni Mantovani
BACKGROUND: Chronic Obstructive Pulmonary Disease (COPD) is a common disease with significant health and economic consequences. This study assesses the burden of COPD in the general population, and the influence of exacerbations (E-COPD) on disease progression and costs. METHODS: This is a secondary data analysis of healthcare administrative databases of the region of Lombardy, in northern Italy. The study included ≥ 40 year-old patients hospitalized for a severe E-COPD (index event) during 2006...
2014: PloS One
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