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https://www.readbyqxmd.com/read/28724567/towards-evidence-based-emergency-medicine-best-bets-from-the-manchester-royal-infirmary
#1
Janos Baombe
No abstract text is available yet for this article.
August 2017: Emergency Medicine Journal: EMJ
https://www.readbyqxmd.com/read/28718631/a-copper-ii-paddlewheel-metal-organic-framework-with-exceptional-hydrolytic-stability-and-selective-adsorption-and-detection-ability-of-aniline-in-water
#2
Ya Chen, Bin Wang, Xiaoqing Wang, Lin-Hua Xie, Jinping Li, Yabo Xie, Jian-Rong Jeff Li
Copper(II) paddlewheel based metal-organic frameworks (CP-MOFs) represent a unique subclass of MOFs with highly predictable porous structures, facile syntheses, and functional open metal sites. However, lack of high hydrolytic stability is an obstacle for CP-MOFs in many practical applications. In this work, we report a new CP-MOF, [Cu4(tdhb)] (BUT-155), which is constructed from a judiciously designed carboxylate ligand with high coordination connectivity (octatopic), abundant hydrophobic substituents (six methyl groups), and substituent constrained geometry (tetrahedral backbone), tdhb8- (H8tdhb = 3,3',5,5'-tetra(3,5-dicarboxyphenyl)-2,2',4,4',6,6'-hexamethylbiphenyl))...
July 18, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28713204/efficient-nh3-scr-removal-of-nox-with-highly-ordered-mesoporous-wo3-%C3%AF-ceo2-at-low-temperatures
#3
Sihui Zhan, He Zhang, Yu Zhang, Qiang Shi, Yi Li, XiuJun Li
To eliminate nitrogen oxides (NOx), a series of highly ordered mesoporous WO3(χ)-CeO2 nanomaterials (χ represents the mole ratio of W/Ce) were synthesized by using KIT-6 as a hard template, which was used for selective catalytic reduction (SCR) to remove NOx with NH3 at low temperatures. Moreover, the nanomaterials were characterized by TEM, XRD, Raman, XPS, BET, H2-TPR, NH3-TPD and in situ DRIFTS. It can be found that all of the prepared mesoporous WO3(χ)-CeO2 (χ = 0, 0.5, 0.75, 1 and 1.25) showed highly ordered mesoporous channels...
April 2017: Applied Catalysis. B, Environmental
https://www.readbyqxmd.com/read/28664671/cobalt-phosphonates-as-precatalysts-for-water-oxidation-role-of-pore-size-in-catalysis
#4
Jony Saha, Debarati Roy Chowdhury, Priyajit Jash, Amit Paul
We report a simple approach for the synthesis of cobalt phosphonate nanocages(CoOP)having two distinct types of pore diameters utilizing a novel tetra constituent assembly of CoCl2∙6H2O-nitrilotris(methylene)triphosphonic acid (NMPA)-F127 surfactant-polyvinyl alcohol (PVA, co-surfactant). TEM images revealed the formation of large nanocages in spheres (pore diameter: 20-60 nm) and existence of narrow micro/mesopores (pore diameter: 1.5-5 nm) on their walls. BET adsorption/desorption experiments coincided with observation of dual porosity and indicated that the contribution of micro/mesopores increased gradually with increasing concentration of PVA during synthesis from CoOP-0 to CoOP-15 (numeric suggest wt% of PVA used in CoOP synthesis)...
June 30, 2017: Chemistry: a European Journal
https://www.readbyqxmd.com/read/28642957/superacid-promoted-synthesis-of-highly-porous-hypercrosslinked-polycarbazoles-for-efficient-co2-capture
#5
Xiang Zhu, Shunmin Ding, Carter W Abney, Katie L Browning, Robert L Sacci, Gabriel M Veith, Chengcheng Tian, Sheng Dai
A superacid-promoted "knitting" strategy has been developed for the generation of a novel family of hypercrosslinked nanoporous polycarbazoles for efficient CO2 capture. Using trifluoromethanesulfonic acid, a Brønsted superacid, we demonstrate the facile and rapid synthesis of highly porous polycarbazoles with BET surface areas as high as 1688 m(2) g(-1), and capable of adsorbing 3.5 mmol g(-1) of CO2 at 298 K and 1 bar. This impressive result bestows the material with the highest CO2 uptake capacity for all nanoporous carbazolic polymers and ranks among the best by known porous organic polymers under this condition...
July 4, 2017: Chemical Communications: Chem Comm
https://www.readbyqxmd.com/read/28633846/aqueous-norfloxacin-sonocatalytic-degradation-with-multilayer-flower-like-zno-in-the-presence-of-peroxydisulfate
#6
Shou-Bo Hu, Liang Li, Meng-Yu Luo, Ya-Feng Yun, Chang-Tang Chang
Multilayer ZnO nanoflowers were synthesized through a simple precipitation method and characterized by field-emission scanning electron microscopy (FE-SEM), X-ray diffraction (XRD), X-ray photoelectron spectra (XPS) and nitrogen absorption-desorption techniques. The FE-SEM images show the integrated morphology of an individual flower-like ZnO nanostructure, which is made of nano-platelets with uniform thickness (20-30nm). The average pore size and Brunauer-Emmet-Teller (BET) surface area of the as-synthesized ZnO were 27...
September 2017: Ultrasonics Sonochemistry
https://www.readbyqxmd.com/read/28618363/simultaneous-sorption-and-catalytic-oxidation-of-trivalent-antimony-by-canna-indica-derived-biochars
#7
Xiaoqiang Cui, Qijun Ni, Qiang Lin, Kiran Yasmin Khan, Tingqiang Li, Muhammad Bilal Khan, Zhenli He, Xiaoe Yang
The simultaneous sorption and oxidation of Sb(III) on biochars were investigated using batch experiments. The biochars were derived from Canna indica at different pyrolysis temperatures (300-600 °C, referred as CIB300-CIB600), and characterized by FTIR, BET, XRD, SEM-EDS, EPR and Boehm titration. The Sb(III) sorption data could be well fitted by both the Langmuir and Freundlich models, and the pseudo-second order model is best for describing the kinetic data. The maximum Sb(III) sorption capacity of CIB300 was 16...
June 12, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28586176/visible-light-photoreduction-of-co2-into-ch4-over-znte-modified-tio2-coral-like-nanostructures
#8
Muhammad Fahad Ehsan, Rabia Khan, Tao He
Rapidly depleting fossil fuels and the related environmental issues are the two alarming global concerns the world is facing today. To efficiently address these issues, the future energy requirements need to be fulfilled via renewable as well as environment friendly resources. In this context, we report the ZnTe modified TiO2 photocatalysts with varying ZnTe modification amounts, i.e., 1.96, 16 and 65% for the visible-light carbon dioxide photoreduction into methane. The hydrothermally synthesized photocatalysts have been characterized through various techniques including X-ray diffraction, scanning electron microscopy coupled with energy dispersive X-ray spectroscopy, transmission electron microscopy, UV-vis spectroscopy, X-ray photoelectron spectroscopy and Brauner-Emmett-Tauler (BET) analysis for surface area measurements...
June 6, 2017: Chemphyschem: a European Journal of Chemical Physics and Physical Chemistry
https://www.readbyqxmd.com/read/28549420/prognostic-significance-of-tumor-infiltrating-immune-cells-in-oral-squamous-cell-carcinoma
#9
Juan Fang, Xiaoxu Li, Da Ma, Xiangqi Liu, Yichen Chen, Yun Wang, Vivian Wai Yan Lui, Juan Xia, Bin Cheng, Zhi Wang
BACKGROUND: Prognostic factors aid in the stratification and treatment of cancer. This study evaluated prognostic importance of tumor infiltrating immune cell in patients with oral squamous cell carcinoma. METHODS: Profiles of infiltrating immune cells and clinicopathological data were available for 78 OSCC patients with a median follow-up of 48 months. The infiltrating intensity of CD8, CD4, T-bet, CD68 and CD57 positive cells were assessed by immunohistochemistry...
May 26, 2017: BMC Cancer
https://www.readbyqxmd.com/read/28539372/toward-evidence-based-emergency-medicine-best-bets-from-the-manchester-royal-infirmary
#10
Craig Ferguson
No abstract text is available yet for this article.
June 2017: Emergency Medicine Journal: EMJ
https://www.readbyqxmd.com/read/28463763/a-novel-and-sensitive-carbon-paste-electrode-with-clinoptilolite-nano-particles-containing-hexadecyltrimethyl-ammonium-surfactant-and-dithizone-for-the-voltammetric-determination-of-sn-ii
#11
Azin Niknezhadi, Alireza Nezamzadeh-Ejhieh
Clinoptilolite nano-particles (CNP) were modified by hexadecyltrimethyl ammonium bromide surfactant (HDTMA) and dithizone (DZ). The modified zeolite was then used for the modification of carbon paste electrode (CPE). The resulted CNP-HDTMA-DZ-CPE was finally used for the voltammetric determination of Sn(II) in aqueous solution. The raw and modified CNP was characterized by SEM-EDX, BET, TG-DTG and FTIR techniques. The best voltammetric response was obtained in 0.1molL(-1) NaNO3+HCl at pH 2.2 as supporting electrolyte...
September 1, 2017: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/28457482/aging-effects-on-t-bet-expression-in-human-b-cell-subsets
#12
Daniela Frasca, Alain Diaz, Maria Romero, Francesca D'Eramo, Bonnie B Blomberg
In order to compare human and mouse B cell subset markers, we evaluated T-bet expression in human B cell subsets from individuals of different ages. We found T-bet expressed in unstimulated memory more than naïve B cells, and more in young individuals. TLR7 stimulation up-regulated T-bet in all B cell subsets from young and elderly individuals, and more in the elderly. By fold-increase the best effect was seen in subsets of the elderly and especially in those that undergo class switch (naïve and IgM). We also evaluated CD11c expression, as T-bet+CD11c+ B cells are expanded in healthy elderly individuals and also in patients with autoimmunity...
April 24, 2017: Cellular Immunology
https://www.readbyqxmd.com/read/28428437/bet-2-striking-the-right-balance-anticoagulation-and-isolated-distal-deep-vein-thrombosis
#13
Tom Jones, Dan Horner
A short-cut review was carried out to establish whether treatment of isolated distal deep vein thrombosis with therapeutic anticoagulation can reduce adverse clinical outcomes. A meta-analysis from 2011 and 11 subsequent directly relevant papers were found using the reported search strategy. Of these, 7 in total presented the best evidence to answer the clinical question. The author, date and country of publication, patient group studied, study type, relevant outcomes, results and study weaknesses of these best papers are tabulated...
May 2017: Emergency Medicine Journal: EMJ
https://www.readbyqxmd.com/read/28428435/bet-1-a-glass-half-full-thrombolysis-for-the-treatment-of-submassive-pulmonary-embolism
#14
Liam Barrett, Dan Horner
A short-cut review was carried out to establish whether thrombolysis in addition to therapeutic anticoagulation could be of benefit in submassive (intermediate risk) pulmonary embolism (PE). 64 directly relevant papers were found using the reported search strategy. Of these, three presented the best evidence to answer the clinical question. The author, date and country of publication, patient group studied, study type, relevant outcomes, results and study weaknesses of these best papers are tabulated. It is concluded that there is insufficient evidence to support the routine use of adjuvant thrombolytic therapy at any dose for patients with submassive PE...
May 2017: Emergency Medicine Journal: EMJ
https://www.readbyqxmd.com/read/28425316/carbon-covered-mesoporous-silica-and-its-application-in-rhodamine-b-adsorption
#15
R C S Nascimento, A O S Silva, L Meili
Modified versions of MCM-41 and SBA-15 were obtained from sucrose by carbon deposition. The ability of the resulting materials, MCM-41 CC and SBA-15 CC, to remove Rhodamine B from aqueous solutions was evaluated. TG/DTG, XRD, Nitrogen Adsorption (BET), and SEM were used to characterize the materials. Adsorption was investigated by finite bath studies. To characterize the adsorption behavior and mechanism, kinetics and equilibrium were assessed. MCM-41 CC provided the best adsorption results: adsorptive capacity of 11...
May 18, 2017: Environmental Technology
https://www.readbyqxmd.com/read/28394738/kinetic-and-isotherm-studies-of-bisphenol-a-adsorption-onto-orange-albedo-citrus-sinensis-sorption-mechanisms-based-on-the-main-albedo-components-vitamin-c-flavones-glycosides-and-carotenoids
#16
Theophile Kamgaing, Giscard Doungmo, Francis Merlin Melataguia Tchieno, Jimmy Julio Gouoko Kouonang, Ketcha Joseph Mbadcam
Orange albedo and its adsorption capacity towards bisphenol A (BPA) were studied. Adsorption experiments were conducted in batch mode at 25-55°C. Scanning electron microscopy (SEM), Energy dispersive X-ray spectroscopy (EDX), X-ray diffraction (XRD), Brunauer-Emmett-Teller (BET) and Fourier transform infrared (FTIR) spectroscopy were used to characterise the biosorbent. The effects of various parameters including adsorption time, equilibrium pH, adsorbent dosage and initial adsorbate concentration were investigated...
July 3, 2017: Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering
https://www.readbyqxmd.com/read/28387498/understanding-volumetric-and-gravimetric-hydrogen-adsorption-trade-off-in-metal-organic-frameworks
#17
Diego A Gómez-Gualdrón, Timothy C Wang, Paula García-Holley, Ruth M Sawelewa, Edwin Argueta, Randall Q Snurr, Joseph T Hupp, Taner Yildirim, Omar K Farha
Metal-organic frameworks (MOFs) are porous crystalline materials that are promising for adsorption-based, on-board storage of hydrogen in fuel-cell vehicles. Volumetric and gravimetric hydrogen capacities are the key factors that determine the size and weight of the MOF-filled tank required to store a certain amount of hydrogen for reasonable driving range. Therefore, they must be optimized so the tank is neither too large nor too heavy. Because the goals of maximizing MOF volumetric and gravimetric hydrogen adsorption loadings individually are incompatible, an in-depth understanding of the trade-off between MOF volumetric and gravimetric loadings is necessary to achieve the best compromise between these properties...
April 7, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28371715/oxidation-of-toluene-in-humid-air-by-metal-oxides-supported-on-%C3%AE-alumina
#18
Mohammadreza Esmaeilirad, Mohammad Zabihi, Jalal Shayegan, Farhad Khorasheh
Monometallic and bimetallic supported metal oxides catalysts on γ-alumina were prepared by heterogeneous deposition-precipitation. The γ-alumina used as a support was synthesized by the sol-gel and the co-precipitation methods. Supports and catalysts were characterized by Brunauer-Emmett-Teller (BET) surface area, X-ray diffraction (XRD), field-emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), and X-ray photoelectron spectroscopy (XPS). The performance of the prepared catalysts was studied for total oxidation of toluene in air at different relative humidity and oxidation temperatures...
March 18, 2017: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/28342341/evaluation-of-heavy-crude-oil-from-a-water-oil-model-system-as-starting-material-for-the-preparation-of-adsorbents-type-nay-zeolite-templated-carbon
#19
Cindy J Elles-Pérez, Amner Muñoz-Acevedo, Andrés Guzmán, Hernando Camargo, José Henao
In this work, NaY zeolite is explored as a possible "template" to obtain porous materials type ZTC from the adsorption of heavy crude oil in a water-oil model system (emulsion). In order to produce the adsorbents, a cationic surfactant is selected to facilitate the adsorption of the crude oil into the pores of the zeolite and to get the composite, which was activated with controlled thermal treatments (T: 700-800 °C and t: 0.5-1 h) in inert conditions (N2 gaseous). The starting materials, composite and porous carbons were characterized using structural/surface analysis techniques (API Gravity, SARA, IR, XRD, XRF, TGA, Langmuir isotherms, BET and SEM)...
March 22, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28335366/nano-copper-oxide-modified-carbon-cloth-as-cathode-for-a-two-chamber-microbial-fuel-cell
#20
Feng Dong, Peng Zhang, Kexun Li, Xianhua Liu, Pingping Zhang
In this work, Cu₂O nanoparticles were deposited on a carbon cloth cathode using a facile electrochemical method. The morphology of the modified cathode, which was characterized by scanning electron microscopy (SEM) and Brunauer-Emmett-Teller (BET) tests, showed that the porosity and specific surface area of the cathode improved with longer deposition times. X-ray photoelectron spectroscopy (XPS) and cyclic voltammetry (CV) results showed that cupric oxide and cuprous oxide coexisted on the carbon cloth, which improved the electrochemical activity of cathode...
December 9, 2016: Nanomaterials
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