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https://www.readbyqxmd.com/read/28531855/investigation-on-the-fast-co-pyrolysis-of-sewage-sludge-with-biomass-and-the-combustion-reactivity-of-residual-char
#1
Shuanghui Deng, Houzhang Tan, Xuebin Wang, Fuxin Yang, Ruijie Cao, Zhao Wang, Renhui Ruan
Gaining the valuable fuels from sewage sludge is a promising method. In this work, the fast pyrolysis characteristics of sewage sludge (SS), wheat straw (WS) and their mixtures in different proportions were carried out in a drop-tube reactor. The combustion reactivity of the residual char obtained was investigated in a thermogravimetric analyzer (TGA). Results indicate that SS and WS at different pyrolysis temperatures yielded different characteristic gas compositions and product distributions. The co-pyrolysis of SS with WS showed that there existed a synergistic effect in terms of higher gas and bio-oil yields and lower char yield, especially at the WS adding percentage of 80wt%...
April 21, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28531272/a-novel-isoform-of-tet1-that-lacks-a-cxxc-domain-is-overexpressed-in-cancer
#2
Charly R Good, Jozef Madzo, Bela Patel, Shinji Maegawa, Nora Engel, Jaroslav Jelinek, Jean-Pierre J Issa
TET1 oxidizes methylated cytosine into 5-hydroxymethylcytosine (5hmC), resulting in regulation of DNA methylation and gene expression. Full length TET1 (TET1FL) has a CXXC domain that binds to unmethylated CpG islands (CGIs). This CXXC domain allows TET1 to protect CGIs from aberrant methylation, but it also limits its ability to regulate genes outside of CGIs. Here, we report a novel isoform of TET1 (TET1ALT) that has a unique transcription start site from an alternate promoter in intron 2, yielding a protein with a unique translation start site...
May 22, 2017: Nucleic Acids Research
https://www.readbyqxmd.com/read/28521978/influences-of-metal-ions-crosslinked-alginate-based-coatings-on-thermal-stability-and-fire-resistance-of-cotton-fabrics
#3
Ying Pan, Wei Wang, Longxiang Liu, Hua Ge, Lei Song, Yuan Hu
Bio-based and phosphorus-free coating was fabricated by layer-by-layer assembly method to obtain the flame retardant cotton fabric. For the first time, the modified cotton fabrics were prepared by utilizing positively charged polyethylenimine and negatively charged alginate together with subsequent crosslinking of barium, nickel and cobalt ions. Scanning electron microscopy and energy-dispersive X-ray demonstrated that the metal ions crosslinked coating was successfully constructed on the substrate. The thermal stability and flame retardancy were investigated by thermogravimetric analysis (TGA) and horizontal flame tests...
August 15, 2017: Carbohydrate Polymers
https://www.readbyqxmd.com/read/28514901/fixed-bed-study-for-bone-char-adsorptive-removal-of-refractory-organics-from-electrodialysis-concentrate-produced-by-petroleum-refinery
#4
Patrícia da Luz Mesquita, Cássia Ribeiro Souza, Nilza Tatiane G Santos, Sônia Denise Ferreira Rocha
Water reuse in industrial processes has been an increasing need encouraged in recent years. However, as the streams are recycled, solutes accumulate, thus requiring purification techniques. Membrane processes (reverse osmosis and electrodialysis) have been implemented and in order to increase the reuse of water at its highest level, crystallization has been evaluated to remove salts from the concentrate produced and get a feasible disposal. Nevertheless, contaminants affect the crystallization performance, thus making the removal of residual organics important for both, the efficiency of crystallization as well as the increase of water reuse...
May 17, 2017: Environmental Technology
https://www.readbyqxmd.com/read/28511349/brown-and-black-carbon-in-beijing-aerosol-implications-for-the-effects-of-brown-coating-on-light-absorption-by-black-carbon
#5
Yuan Cheng, Ke-Bin He, Guenter Engling, Rodney Weber, Jiu-Meng Liu, Zhen-Yu Du, Shu-Ping Dong
Brown carbon (BrC) is increasingly included in climate models as an emerging category of particulate organic compounds that can absorb solar radiation efficiently at specific wavelengths. Water-soluble organic carbon (WSOC) has been commonly used as a surrogate for BrC; however, it only represents a limited fraction of total organic carbon (OC) mass, which could be as low as about 20% in urban atmosphere. Using methanol as the extraction solvent, up to approximately 90% of the OC in Beijing aerosol was isolated and measured for absorption spectra over the ultraviolet-to-visible wavelength range...
May 12, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28510186/broomcorn-and-foxtail-millet-were-cultivated-in-taiwan-about-5000%C3%A2-years-ago
#6
Chen-Hwa Tsang, Kuang-Ti Li, Tze-Fu Hsu, Yuan-Ching Tsai, Po-Hsuan Fang, Yue-Ie Caroline Hsing
BACKGROUND: Archaeobotanical remains of millet were found at the Nan-kuan-li East site in Tainan Science Park, southern Taiwan. This site, dated around 5000-4300 BP, is characterized by remains of the Tapenkeng culture, the earliest Neolithic culture found so far in Taiwan. A large number of millet-like carbonized and charred seeds with varied sizes and shapes were unearthed from the site by the flotation method. Since no millet grain was ever found archaeologically in Taiwan previously, this discovery is of great importance and significance...
December 2017: Botanical Studies (Taipei, Taiwan)
https://www.readbyqxmd.com/read/28506669/recycling-and-characterization-of-carbon-fibers-from-carbon-fiber-reinforced-epoxy-matrix-composites-by-a-novel-super-heated-steam-method
#7
Kwan-Woo Kim, Hye-Min Lee, Jeong-Hun An, Dong-Chul Chung, Kay-Hyeok An, Byung-Joo Kim
In order to manufacture high quality recycled carbon fibers (R-CFs), carbon fiber-reinforced composite wastes were pyrolysed with super-heated steam at 550 °C in a fixed bed reactor for varying reaction times. The mechanical and surface properties of the R-CFs were characterized with a single fiber tensile test, interface shear strength (IFSS), scanning electron microscopy (SEM), and X-ray photoelectron spectroscopy (XPS). The surface analysis showed that there was no matrix char residue on the fiber surfaces...
May 12, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28505884/experimental-studies-on-combustion-of-composite-biomass-pellets-in-fluidized-bed
#8
Feihong Guo, Zhaoping Zhong
This work presents studies on the combustion of Composite Biomass Pellets (CBPS) in fluidized bed using bauxite particles as the bed material. Prior to the combustion experiment, cold-flow characterization and thermogravimetric analysis are performed to investigate the effect of air velocity and combustion mechanism of CBPS. The cold-state test shows that CBPs and bauxite particles fluidize well in the fluidized bed. However, because of the presence of large CBPs, optimization of the fluidization velocity is rather challenging...
May 11, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28501688/influence-of-pre-treatment-on-torrefaction-of-phyllostachys-edulis
#9
Xiwei Xu, Enchen Jiang, Xiang Lan
This study investigated the effects of different pre-treatments on structural changes in Phyllostachys edulis. Samples were pretreated with water, 15% ammonia water, 2% sulfuric acid, hydrothermal carbonization, and ball milling. Moreover, ultrasound was introduced. The influence of pre-treatment on the physiochemical property and composition of P. edulis were studied. Moreover, torrefaction characterization was performed and the distribution of torrefaction products of pretreated samples was determined. Results showed that pre-treatment effectively modified physiochemical structure and the torrefaction property of P...
April 25, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28500548/decontamination-of-arsenic-v-contained-liquid-phase-utilizing-fe3o4-bone-char-nanocomposite-encapsulated-in-chitosan-biopolymer
#10
Reza Darvishi Cheshmeh Soltani, Mahdi Safari, Afshin Maleki, Reza Rezaee, Behzad Shahmoradi, Siran Shahmohammadi, Esmail Ghahramani
The application of a novel nanocomposite synthesized through the combination of Fe3O4 nanoparticles and bone char particles for the adsorption of As(V) ions in the aquatic medium was investigated. As-prepared nanocomposite was immobilized by using chitosan biopolymer. The characterization of the nanocomposite was performed via SEM, XRD, FT-IR, and BET together with the determination of zero-point charge of the adsorbent surface. As results, the obtained experimental data were fitted well with pseudo-first-order kinetic model (R(2) = 0...
May 13, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28495055/production-and-characterization-of-chars-from-cherry-pulp-via-pyrolysis
#11
E Pehlivan, N Özbay, A S Yargıç, R Z Şahin
Pyrolysis is an eco-friendly process to achieve valuable products like bio-oil, char and gases. In the last decades, biochar production from pyrolysis of a wide variety of industrial and agricultural wastes become popular, which can be utilized as adsorbent instead of the expensive activated carbons. In this study, cherry pulp was pyrolyzed in a fixed bed tubular reactor at five different temperatures (400, 500,550, 600 and 700 °C) and three different heating rates (10, 100 and 200 °C/min) to obtain biochar...
May 7, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28494310/a-novel-and-facile-strategy-for-highly-flame-retardant-polymer-foam-composite-materials-transforming-silicone-resin-coating-into-silica-self-extinguishing-layer
#12
Qian Wu, Qian Zhang, Li Zhao, Shi-Neng Li, Lian-Bin Wu, Jian-Xiong Jiang, Long-Cheng Tang
In this study, a novel strategy was developed to fabricate highly flame retardant polymer foam composite materials coated by synthesized silicone resin (SiR) polymer via a facile dip-coating processing. Applying the SiR polymer coating, the mechanical property and thermal stability of SiR-coated polymer foam (PSiR) composites are greatly enhanced without significantly altering their structure and morphology. The minimum oxygen concentration to support the combustion of foam materials is greatly increased, i...
April 27, 2017: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/28493705/quantification-of-hemoglobin-and-white-blood-cell-dna-adducts-of-the-tobacco-carcinogens-2-amino-9h-pyrido-2-3-b-indole-and-4-aminobiphenyl-formed-in-humans-by-nanoflow-liquid-chromatography-ion-trap-multistage-mass-spectrometry
#13
Tingting Cai, Medjda Bellamri, Xun Ming, Woon-Puay Koh, Mimi C Yu, Robert J Turesky
Aromatic amines covalently bound to hemoglobin (Hb) as sulfinamide adducts at the cysteine 93 residue of the Hb β chain have served as biomarkers to assess exposure to this class of human carcinogens for the past 30 years. In this study, we report that 2-amino-9H-pyrido[2,3-b]indole (AαC), an abundant carcinogenic heterocyclic aromatic amine formed in tobacco smoke and charred cooked meats, also reacts with Hb to form a sulfinamide adduct. A novel nanoflow liquid chromatography/ion trap multistage mass spectrometry (nanoLC-IT/MS3) method was established to assess exposure to AαC and the tobacco-associated bladder carcinogen 4-aminobiphenyl (4-ABP) through their Hb sulfinamide adducts...
May 11, 2017: Chemical Research in Toxicology
https://www.readbyqxmd.com/read/28493335/response-of-htr3a-ko-mice-to-antidepressant-treatment-and-chronic-stress
#14
Vincent Martin, Armance Riffaud, Tevrasamy Marday, Charly Brouillard, Bernard Franc, Jean-Pol Tassin, Caroline Sevoz-Couche, Raymond Mongeau, Laurence Lanfumey
BACKGROUND AND PURPOSE: It has recently been suggested that 5-HT3 receptor blockade enhances selective serotonin reuptake inhibitor (SSRI) antidepressants efficacy and may reverse stress-induced deficits in rodents. EXPERIMENTAL APPROACH: To further explore this hypothesis, we used mice lacking the 5-HT3 receptor (Htr3a KO) and their wild-type (WT) controls to assess their response in behavioural paradigms relevant to anxiety and depression. Mice were studied under basal, antidepressant treatments and chronic social defeat stress (CSDS) conditions...
May 10, 2017: British Journal of Pharmacology
https://www.readbyqxmd.com/read/28490560/nursing-home-team-care-deprescribing-study-a-stepped-wedge-randomised-controlled-trial-protocol
#15
Chong-Han Kua, Cindy Ying Ying Yeo, Cheryl Wai Teng Char, Cheryl Wei Yan Tan, Poh Ching Tan, Vivienne Sl Mak, Shaun Wen Huey Lee, Ian Yi-Onn Leong
INTRODUCTION: An ageing population has become an urgent concern for Asia in recent times. In nursing homes, polypharmacy has also become a compounding issue. Deprescribing practice is an evidence-based strategy to provide a better outcome in this group of patients; however, its implementation in nursing homes is often challenging, and prospective outcome data on deprescribing practice in the elderly is lacking. Our study assesses the implementation of team-care deprescribing to understand the benefits of this practice in geriatric setting and to explore the factors affecting deprescribing practice...
May 9, 2017: BMJ Open
https://www.readbyqxmd.com/read/28489946/transformation-of-nitrogen-and-evolution-of-n-containing-species-during-algae-pyrolysis
#16
Wei Chen, Haiping Yang, Yingquan Chen, Mingwei Xia, Xu Chen, Hanping Chen
Transformation and evolution mechanisms of nitrogen during algae pyrolysis were investigated in depth with exploration of N-containing products under variant temperature. Results indicated nitrogen in algae is mainly in the form of protein-N (∼90%) with some inorganic-N. At 400-600 °C, protein-N in algae cracked first with algae pyrolysis and formed pyridinic-N, pyrrolic-N, and quaternary-N in char. The content of protein-N decreased significantly, while that of pyrrolic-N and quaternary-N increased gradually with temperature increasing...
May 19, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28485128/alcoholysis-a-promising-technology-for-conversion-of-lignocellulose-and-platform-chemicals
#17
Shanhui Zhu, Jing Guo, Xun Wang, Jianguo Wang, Weibin Fan
In the catalytic conversion of lignocellulose to valuable products, the first entry point is to break down these biopolymers to sugar units or aromatic monomers, which is conventionally achieved by hydrolysis in water medium. Recent years have seen tremendous progress in alcoholysis process that possesses remarkable advantages such as the avoidance of treating waste water, suppression of humins or chars as well as increase of reaction rate and product yield. Here, the advances have been focused on the alcoholysis of cellulose, hemicellulose and lignin to alkyl glucosides, xylosides and aromatic monomers, respectively...
May 9, 2017: ChemSusChem
https://www.readbyqxmd.com/read/28479087/low-temperature-circulating-fluidized-bed-gasification-and-co-gasification-of-municipal-sewage-sludge-part-2-evaluation-of-ash-materials-as-phosphorus-fertilizer
#18
Tobias Pape Thomsen, Henrik Hauggaard-Nielsen, Benny Gøbel, Peder Stoholm, Jesper Ahrenfeldt, Ulrik B Henriksen, Dorette Sophie Müller-Stöver
The study is part 2 of 2 in an investigation of gasification and co-gasification of municipal sewage sludge in low temperature gasifiers. In this work, solid residuals from thermal gasification and co-gasification of municipal sewage sludge were investigated for their potential use as fertilizer. Ashes from five different low temperature circulating fluidized bed (LT-CFB) gasification campaigns including two mono-sludge campaigns, two sludge/straw mixed fuels campaigns and a straw reference campaign were compared...
May 4, 2017: Waste Management
https://www.readbyqxmd.com/read/28477280/biomarkers-of-acute-stroke-etiology-base-study-methodology
#19
Edward C Jauch, Andrew D Barreto, Joseph P Broderick, Doug M Char, Brett L Cucchiara, Thomas G Devlin, Alison J Haddock, William J Hicks, Brian C Hiestand, Glen C Jickling, Jeff June, David S Liebeskind, Ted J Lowenkopf, Joseph B Miller, John O'Neill, Tim L Schoonover, Frank R Sharp, W Frank Peacock
Acute ischemic stroke affects over 800,000 US adults annually, with hundreds of thousands more experiencing a transient ischemic attack. Emergent evaluation, prompt acute treatment, and identification of stroke or TIA (transient ischemic attack) etiology for specific secondary prevention are critical for decreasing further morbidity and mortality of cerebrovascular disease. The Biomarkers of Acute Stroke Etiology (BASE) study is a multicenter observational study to identify serum markers defining the etiology of acute ischemic stroke...
May 5, 2017: Translational Stroke Research
https://www.readbyqxmd.com/read/28476340/first-report-of-human-intestinal-sarcocystosis-in-cambodia
#20
Virak Khieu, Hanspeter Marti, Saomony Chhay, Meng Chuor Char, Sinuon Muth, Peter Odermatt
Human intestinal sarcocystosis (HIS), caused by Sarcocystis species, is acquired by eating undercooked meat from sarcocyst-containing cattle (S. hominis, S. heydorni) and pigs (S. suihominis). We report on the detection of human intestinal Sarcocystis infections in a cross-sectional survey of Strongyloides stercoralis in early 2014, in Rovieng District, Preah Vihear Province, northern Cambodia. Among 1081 participants, 108 (10.0%) were diagnosed with Sarcocystis spp. oocysts in stool samples. Males had a significantly higher risk of infection than females (OR: 1...
May 2, 2017: Parasitology International
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