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https://www.readbyqxmd.com/read/28214624/effect-of-cobalt-loading-on-the-solid-state-properties-and-ethyl-acetate-oxidation-performance-of-cobalt-cerium-mixed-oxides
#1
M Konsolakis, S A C Carabineiro, G E Marnellos, M F Asad, O S G P Soares, M F R Pereira, J J M Órfão, J L Figueiredo
Cobalt-cerium mixed oxides were prepared by the wet impregnation method and evaluated for volatile organic compounds (VOCs) abatement, using ethyl acetate (EtAc) as model molecule. The impact of Co content on the physicochemical characteristics of catalysts and EtAc conversion was investigated. The materials were characterized by various techniques, including N2 adsorption at -196°C, scanning electron microscopy (SEM), X-ray diffraction (XRD), H2-temperature programmed reduction (H2-TPR) and X-ray photoelectron spectroscopy (XPS) to reveal the structure-activity relationship...
February 10, 2017: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/28209993/suppression-of-tak1-pathway-by-shear-stress-counteracts-the-inflammatory-endothelial-cell-phenotype-induced-by-oxidative-stress-and-tgf-%C3%AE-1
#2
Ee Soo Lee, Llorenç Solé Boldo, Bernadette O Fernandez, Martin Feelisch, Martin C Harmsen
Endothelial dysfunction is characterised by aberrant redox signalling and an inflammatory phenotype. Shear stress antagonises endothelial dysfunction by increasing nitric oxide formation, activating anti-inflammatory pathways and suppressing inflammatory pathways. The TAK1 (MAP3K7) is a key mediator of inflammation and non-canonical TGF-β signalling. While the individual roles of TAK1, ERK5 (MAPK7) and TGF-β pathways in endothelial cell regulation are well characterised, an integrative understanding of the orchestration of these pathways and their crosstalk with the redox system under shear stress is lacking...
February 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28209738/optogenetic-low-frequency-stimulation-of-specific-neuronal-populations-abates-ictogenesis
#3
Zahra Shiri, Maxime Lévesque, Guillaume Etter, Frédéric Manseau, Sylvain Williams, Massimo Avoli
Despite many advances made in understanding the pathophysiology of epileptic disorders, seizures remain poorly controlled in approximately one third of mesial temporal lobe epilepsy patients. Here, we established the efficacy of cell type-specific low-frequency stimulation (LFS) in controlling ictogenesis in the mouse entorhinal cortex (EC) in an in vitro brain slice preparation. Specifically, we used 1 Hz optogenetic stimulation of Ca(2+)/calmodulin-dependent protein kinase II-positive principal cells as well as of parvalbumin- or somatostatin-positive interneurons to study the effects of such repetitive activation on epileptiform discharges induced by 4-aminopyridine...
February 16, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28208092/microscopic-evidence-for-humic-acid-induced-changes-in-lead-immobilization-by-phosphate-in-a-counterdiffusion-system
#4
Mei Wang, Zhuo Zhang, Jie Ren, Chao Zhang, Chunping Li, Guanlin Guo, Fasheng Li
Abatement of lead (Pb) contamination in soil via chemical immobilization can reduce potential risks but is influenced by soil organic matter. The aim of this study was to observe and understand the influence of organic matter on Pb immobilization by phosphate. For this purpose, humic acid (HA) was introduced into a counterdiffusion system to mimic ionic reactions of the mineralization processes between the pollutant (Pb) and amendment agent (phosphate) in soil system, and were characterized jointly by in situ optical microscopy and ex situ XRD, SEM, TEM, and LSCM...
February 7, 2017: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/28195720/system-wide-and-superemitter-policy-options-for-the-abatement-of-methane-emissions-from-the-u-s-natural-gas-system
#5
Erin Noel Mayfield, Allen L Robinson, Jared L Cohon
This paper assesses tradeoffs between system-wide and superemitter policy options for reducing methane emissions from compressor stations in the U.S. transmission and storage system. Leveraging recently collected national emissions and activity datasets, we developed a new processed-based emissions model implemented in a Monte Carlo simulation framework to estimate emissions for each component and facility in the system. We find that approximately 83% of emissions, given the existing suite of technologies, have the potential to be abated, with only a few emission categories comprising a majority of emissions...
February 14, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28195353/screening-of-cadmium-and-copper-phytoremediation-ability-of-tagetes-erecta-using-biochemical-parameters-and-sem-edx-analysis
#6
Sunayana Goswami, Suchismita Das
Tagetes erecta could thrive well in phytotoxic levels of Cd (50-300 mg kg(-1) ) and Cu (150-400 mg kg(-1) ) for 21 days. It accumulated high metal contents in its above ground tissues (3675 mg Cd kg(-1) DW and 3948 mg Cu kg(-1) DW), showed greater root to shoot translocation and high extraction coefficient; all of which pointed towards its potential as a hyperaccumulator. Both Cd and Cu stress reduced the plant biomass, foliar area, and number. Besides, there were significant declines in pigment contents as well as boosts in lipid peroxidation levels...
February 13, 2017: Environmental Toxicology and Chemistry
https://www.readbyqxmd.com/read/28193671/safe-and-effective-sarcoma-therapy-through-bispecific-targeting-of-egfr-and-upar
#7
Antonella Borgatti, Joseph S Koopmeiners, Aaron L Sarver, Amber L Winter, Kathleen Stuebner, Deborah Todhunter, Anthony E Rizzardi, Jonathan C Henricksen, Stephen Schmechel, Colleen L Forster, Jong-Hyuk Kim, Jerry Froelich, Jillian Walz, Michael S Henson, Matthew Breen, Kerstin Lindblad-Toh, Felix Oh, Kristy Pilbeam, Jaime F Modiano, Daniel A Vallera
Sarcomas differ from carcinomas in their mesenchymal origin. Therapeutic advancements have come slowly so alternative drugs and models are urgently needed. These studies report a new drug for sarcomas that simultaneously targets both tumor and tumor neovasculature. eBAT is a bispecific angiotoxin consisting of truncated, deimmunized Pseudomonas exotoxin fused to epidermal growth factor (EGF) and the amino terminal fragment (ATF) of urokinase. Here, we study the drug in an in vivo "ontarget" companion dog trial since eBAT effectively kills canine hemangiosarcoma (HSA) and human sarcoma cells in vitro...
February 13, 2017: Molecular Cancer Therapeutics
https://www.readbyqxmd.com/read/28192110/risk-of-obesity-related-cardiometabolic-complications-in-special-populations-a-crisis-in-asians
#8
N Abate, M Chandalia
The prospect of significant increase in global health-related costs associated with high cardiometabolic complications of obesity in Asians has encouraged more attention to the problem of growing obesity prevalence in these populations. While these studies have shown that cardiometabolic complications occur more frequently and at lower body mass index (BMI) in Asians than in European populations, the mechanisms involved are yet to be discovered. Ethnic/racial differences in body composition and fat distribution have been extensively studied...
February 9, 2017: Gastroenterology
https://www.readbyqxmd.com/read/28190856/virilism-and-ectopic-expression-of-hsd17b5-in-mature-cystic-teratoma
#9
Yohei Kawaguchi, Hiroko Mizuno, Mai Horikawa, Mayuko Kano, Kengo Yamada, Fumiko Yamakawa, Takashi Maekawa, Yuto Yamazaki, Keely M McNamara, Hironobu Sasano, Masayuki Hayashi
Mature cystic teratoma (MCT) is rarely involved in the overproduction of steroid hormones in contrast to sex cord stromal tumors. A 31-year-old woman visited our hospital with hirsutism, hoarseness, and hair loss from the scalp. Serum testosterone and free-testosterone levels were 7.3 ng/ml and 2.3 pg/ml, respectively, which were markedly in excess of the age adjusted female standard levels. Basal blood levels of steroid hormones and serum levels of 17-hydroxyprogesterone at 1 h after intravenous injection of adrenocorticotropic hormone demonstrated that 21-hydroxylase deficiency was not the underlying cause of her virilization...
2017: Tohoku Journal of Experimental Medicine
https://www.readbyqxmd.com/read/28190718/unilateral-inline-replacement-of-infected-aortofemoral-graft-limb-with-femoral-vein
#10
Christian D Simmons, Ahsan T Ali, Kousta Foteh, Matthew R Abate, Matthew R Smeds, Horace J Spencer, G Patrick Clagett
OBJECTIVE: Aortic graft infection remains a formidable challenge for the vascular surgeon. Traditionally, reconstruction with a neoaortoiliac system (NAIS) involves removal of the entire synthetic graft with in situ reconstruction using femoral vein. Whereas the NAIS procedure is durable with excellent graft patency and a low reinfection rate, it can take up to 10 hours and result in a high perioperative complication rate with significant mortality. Not infrequently, the infection is limited to a single limb...
February 9, 2017: Journal of Vascular Surgery
https://www.readbyqxmd.com/read/28190679/fat-oil-and-grease-reduction-in-commercial-kitchen-ductwork-a-novel-biological-approach
#11
S Mudie, M Vahdati
Recent research has characterised emissions upon cooking a variety of foods in a commercial catering environment in terms of volume, particle size and composition. However, there has been limited focus on the deposition of solid grease in commercial kitchen ductwork, the sustainability of these systems and their implications on the heat recovery potential of kitchen ventilation extract air. This paper reviews the literature concerning grease, commonly referred to as Fat, Oils and Grease (FOG) abatement strategies and finds that many of these systems fall short of claimed performances...
February 9, 2017: Waste Management
https://www.readbyqxmd.com/read/28188592/redirecting-reproductive-immunology-research-toward-pregnancy-as-a-period-of-temporary-immune-tolerance
#12
Norbert Gleicher, Vitaly A Kushnir, David H Barad
Referring to two recent publications, we here propose that clinical reproductive immunology has for decades stagnated because reproductive medicine, including assisted reproduction (AR), has failed to accept embryo implantation as an immune system-driven process, dependent on establishment of maternal tolerance toward the implanting fetal semi-allograft (and complete allograft in cases of oocyte donation). Pregnancy represents a biologically unique period of temporary (to the period of gestation restricted) tolerance, otherwise only known in association with parasitic infections...
February 10, 2017: Journal of Assisted Reproduction and Genetics
https://www.readbyqxmd.com/read/28187784/let-7a-transfected-mesenchymal-stem-cells-ameliorate-monocrotaline-induced-pulmonary-hypertension-by-suppressing-pulmonary-artery-smooth-muscle-cell-growth-through-stat3-bmpr2-signaling
#13
Gesheng Cheng, Xingye Wang, Yongxin Li, Lu He
BACKGROUND: Cell-based gene therapy has become a subject of interest for the treatment of pulmonary arterial hypertension (PAH), a devastating disease characterized by pulmonary artery smooth muscle cell (PASMC) hyperplasia. Mesenchymal stem cells (MSCs) have been recently acknowledged as a potential cell vector for gene therapy. Here, we investigated the effect of MSC-based let-7a for PAH. METHODS: After isolation and identification of MSCs from rat bone marrow, cells were infected with recombinant adenovirus vector Ad-let-7a...
February 10, 2017: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/28186134/virulence-inhibitors-from-brazilian-peppertree-block-quorum-sensing-and-abate-dermonecrosis-in-skin-infection-models
#14
Amelia Muhs, James T Lyles, Corey P Parlet, Kate Nelson, Jeffery S Kavanaugh, Alexander R Horswill, Cassandra L Quave
Widespread antibiotic resistance is on the rise and current therapies are becoming increasingly limited in both scope and efficacy. Methicillin-resistant Staphylococcus aureus (MRSA) represents a major contributor to this trend. Quorum sensing controlled virulence factors include secreted toxins responsible for extensive damage to host tissues and evasion of the immune system response; they are major contributors to morbidity and mortality. Investigation of botanical folk medicines for wounds and infections led us to study Schinus terebinthifolia (Brazilian Peppertree) as a potential source of virulence inhibitors...
February 10, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28185729/application-of-ozonation-for-pharmaceuticals-and-personal-care-products-removal-from-water
#15
REVIEW
João Gomes, Raquel Costa, Rosa M Quinta-Ferreira, Rui C Martins
Due to the shortening on natural water resources, reclaimed wastewater will be an important water supply source. However, suitable technologies must be available to guaranty its proper detoxification with special concern for the emerging pharmaceutical and personal care products that are continuously reaching municipal wastewater treatment plants. While conventional biological systems are not suitable to remove these compounds, ozone, due to its interesting features involving molecular ozone oxidation and the possibility of generating unselective hydroxyl radicals, has a wider range of action on micropollutants removal and water disinfection...
February 6, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28183026/operational-and-environmental-performance-in-china-s-thermal-power-industry-taking-an-effectiveness-measure-as-complement-to-an-efficiency-measure
#16
Ke Wang, Jieming Zhang, Yi-Ming Wei
The trend toward a more fiercely competitive and strictly environmentally regulated electricity market in several countries, including China has led to efforts by both industry and government to develop advanced performance evaluation models that adapt to new evaluation requirements. Traditional operational and environmental efficiency measures do not fully consider the influence of market competition and environmental regulations and, thus, are not sufficient for the thermal power industry to evaluate its operational performance with respect to specific marketing goals (operational effectiveness) and its environmental performance with respect to specific emissions reduction targets (environmental effectiveness)...
February 6, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28182688/interrupted-time-series-analysis-of-children-s-blood-lead-levels-a-case-study-of-lead-hazard-control-program-in-syracuse-new-york
#17
Liyang Shao, Lianjun Zhang, Zhen Zhen
Children's blood lead concentrations have been closely monitored over the last two decades in the United States. The bio-monitoring surveillance data collected in local agencies reflected the local temporal trends of children's blood lead levels (BLLs). However, the analysis and modeling of the long-term time series of BLLs have rarely been reported. We attempted to quantify the long-term trends of children's BLLs in the city of Syracuse, New York and evaluate the impacts of local lead poisoning prevention programs and Lead Hazard Control Program on reducing the children's BLLs...
2017: PloS One
https://www.readbyqxmd.com/read/28180999/biotic-conversion-of-sulphate-to-sulphide-and-abiotic-conversion-of-sulphide-to-sulphur-in-a-microbial-fuel-cell-using-cobalt-oxide-octahedrons-as-cathode-catalyst
#18
Pritha Chatterjee, M M Ghangrekar, Surampalli Rao, Senthil Kumar
Varying chemical oxygen demand (COD) and sulphate concentrations in substrate were used to determine reaction kinetics and mass balance of organic matter and sulphate transformation in a microbial fuel cell (MFC). MFC with anodic chamber volume of 1 L, fed with wastewater having COD of 500 mg/L and sulphate of 200 mg/L, could harvest power of 54.4 mW/m(2), at a Coulombic efficiency of 14%, with respective COD and sulphate removals of 90 and 95%. Sulphide concentration, even up to 1500 mg/L, did not inhibit anodic biochemical reactions, due to instantaneous abiotic oxidation to sulphur, at high inlet sulphate...
February 8, 2017: Bioprocess and Biosystems Engineering
https://www.readbyqxmd.com/read/28179076/challenges-for-the-wfd-second-management-cycle-after-the-implementation-of-a-regional-multi-municipality-sanitation-system-in-a-coastal-lagoon-ria-de-aveiro-portugal
#19
M L Lopes, B Marques, J M Dias, A M V M Soares, A I Lillebø
In the scope of the first WDF management cycle, a multi-municipality sanitation system with secondary treatment was implemented in 2005 in Ria de Aveiro coastal lagoon, with the treated effluent discharging into the Atlantic Ocean through a submarine outfall. The lagoon water chemical status was evaluated regarding dissolved inorganic nutrients and chlorophyll a before and after 2005. The S. Jacinto outfall has effectively reduced the point source nutrient loads (ammonium and phosphate) into Ria de Aveiro, representing a step forward for the implementation of the WFD, through eutrophication abatement...
February 5, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28177608/thermally-stable-white-emitting-eu-3-complex-nanozeolite-luminescent-glass-composite-with-high-cri-for-organic-resin-free-warm-white-leds
#20
Jinhui Zhang, Shuming Gong, Jinbo Yu, Peng Li, Xuejie Zhang, Yuwei He, Jianbang Zhou, Rui Shi, Huanrong Li, Aiyun Peng, Jing Wang
Nowadays, it is still a great challenge for lanthanide complexes to be applied in solid state lighting, especially for high-power LEDs because they will suffer severe thermal-induced luminescence quenching and transmittance loss when LEDs are operated at high current. In this paper, we have not only obtained high efficient and thermally chemical stable red emitting hybrid material by introducing europium complex into nanozeolite (NZ) functionalized with the imidazolium-based stopper but also abated its thermal-induced transmittance loss and luminescence quenching behavior via coating it onto a heat-resistant luminescent glass (LG) with high thermal conductivity (1...
February 17, 2017: ACS Applied Materials & Interfaces
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