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https://www.readbyqxmd.com/read/29353115/efficient-removal-of-acid-green-25-dye-from-wastewater-using-activated-prunus-dulcis-as-biosorbent-batch-and-column-studies
#1
Suyog N Jain, Parag R Gogate
Biosorbent synthesized from dead leaves of Prunus Dulcis with chemical activation during the synthesis was applied for the removal of Acid Green 25 dye from wastewater. The obtained biosorbent was characterized using Brunauer-Emmett-Teller analysis, Fourier transform-infrared spectroscopy and scanning electron microscopy measurements. It was demonstrated that alkali treatment during the synthesis significantly increased surface area of biosorbent from 67.205 to 426.346 m2/g. The effect of various operating parameters on dye removal was investigated in batch operation and optimum values of parameters were established as pH of 2, 14 g/L as the dose of natural biosorbent and 6 g/L as the dose of alkali treated biosorbent...
January 17, 2018: Journal of Environmental Management
https://www.readbyqxmd.com/read/29352712/evaluating-new-bio-hydrogen-producers-clostridium-perfringens-strain-jjc-clostridium-bifermentans-strain-wym-and-clostridium-sp-strain-ade-ty
#2
Yee Meng Wong, Ta Yeong Wu, Tau Chuan Ling, Pau Loke Show, Sze Ying Lee, Jo-Shu Chang, Shaliza Ibrahim, Joon Ching Juan
Three newly discovered H2 producing bacteria namely Clostridium perfringens strain JJC, Clostridium bifermentans strain WYM and Clostridium sp. strain Ade.TY originated from landfill leachate sludge have demonstrated highly efficient H2 production. The maximum H2 production attained from these isolates are in the descending order of strain C. perfringens strain JJC > C. bifermentans strain WYM > Clostridium sp. strain Ade.TY with yield of 4.68 ± 0.12, 3.29 ± 0.11, and 2.87 ± 0.10 mol H2/mol glucose, respectively...
January 15, 2018: Journal of Bioscience and Bioengineering
https://www.readbyqxmd.com/read/29352141/pressure-effect-on-impurity-local-vibrational-mode-and-phase-transitions-in-n-type-iron-doped-indium-phosphide
#3
Chih-Ming Lin, I-Jui Hsu, Sin-Cheng Lin, Yu-Chun Chuang, Wei-Ting Chen, Yen-Fa Liao, Jenh-Yih Juang
The evolution of iron local vibrational mode (Fe LVM) and phase transitions in n-type iron-doped indium phosphide (InP:Fe) were investigated at ambient temperature. In-situ angle-dispersive X-ray diffraction measurements revealed that InP:Fe starts to transform from zinc-blende (ZB) to rock-salt (RS) structure around 8.2(2) GPa and completes around 16.0(2) GPa. The Raman shift of both transverse and longitudinal optical modes increases monotonically with increasing pressure, while their intensities become indiscernible at 11...
January 19, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29351913/the-rig-i-like-receptor-lgp2-inhibits-dicer-dependent-processing-of-long-double-stranded-rna-and-blocks-rna-interference-in-mammalian-cells
#4
Annemarthe G van der Veen, Pierre V Maillard, Jan Marten Schmidt, Sonia A Lee, Safia Deddouche-Grass, Annabel Borg, Svend Kjær, Ambrosius P Snijders, Caetano Reis E Sousa
In vertebrates, the presence of viral RNA in the cytosol is sensed by members of the RIG-I-like receptor (RLR) family, which signal to induce production of type I interferons (IFN). These key antiviral cytokines act in a paracrine and autocrine manner to induce hundreds of interferon-stimulated genes (ISGs), whose protein products restrict viral entry, replication and budding. ISGs include the RLRs themselves: RIG-I, MDA5 and, the least-studied family member, LGP2. In contrast, the IFN system is absent in plants and invertebrates, which defend themselves from viral intruders using RNA interference (RNAi)...
January 19, 2018: EMBO Journal
https://www.readbyqxmd.com/read/29349455/on-the-h2-interactions-with-transition-metal-adatoms-supported-on-graphene-a-systematic-density-functional-study
#5
Montserrat Manadé, Francesc Viñes, Adrià Gil, Francesc Illas
The attachment of H2 to the full set of transition metal (TM) adatoms supported on graphene is studied by using density functional theory. Methodology validation calculations on the interactions of H2 with benzene and graphene show that any of the vdW corrections under study, the Grimme D2, D3, D3 with Becke-Jonson damping (D3BJ), and Tkatchenko-Scheffler methods, applied on the PBE functional, are similarly accurate in describing such subtle interactions, with an accuracy of almost 2 kJ mol-1 compared to experiments...
January 19, 2018: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/29345926/investigation-on-the-thermodynamic-dissociation-kinetics-of-photosystem-ii-supercomplexes-to-determine-the-binding-strengths-of-light-harvesting-complexes
#6
Eunchul Kim, Ryutaro Tokutsu, Jun Minagawa
The photosystem II (PSII) supercomplex splits water utilizing light energy, and is composed of a core dimer-complex surrounded by light-harvesting complexes (LHCs). In green algae, the major LHCs which are LHCII trimers, have thus far been categorized into strongly, moderately, or loosely binding LHCII trimers based on their predicted binding to core complexes. However, the binding energies have been indirectly predicted based on the presence or absence of LHCII trimers in the PSII supercomplex under electron microscopy, and have not been determined experimentally...
January 18, 2018: Journal of Physical Chemistry. B
https://www.readbyqxmd.com/read/29345609/dietary-patterns-and-their-association-with-adiponectin-and-leptin-concentrations-throughout-pregnancy-a-prospective-cohort
#7
Nadya H Alves-Santos, Paula G Cocate, Ilana Eshriqui, Camila Benaim, Érica G Barros, Pauline M Emmett, Gilberto Kac
The aim of this study was to evaluate the association of dietary patterns (DP) with maternal adiposity indicators, leptin, adiponectin and insulin concentrations during pregnancy. A prospective cohort of pregnant women followed up at the 5th-13th, 20th -26th and 30th-36th gestational weeks and 30-40 d postpartum was conducted in Rio de Janeiro. A FFQ was administered in the third trimester (30th-36th gestational weeks). The reduced rank regression procedure was used to identify DP that explain response variables (dietary fibre and total fat) related to indicators of maternal adiposity (postpartum weight retention and gestational weight gain (GWG) adequacy), and plasma leptin, adiponectin and insulin concentrations...
January 18, 2018: British Journal of Nutrition
https://www.readbyqxmd.com/read/29344729/sodium-bicarbonate-supplementation-improves-severe-intensity-intermittent-exercise-under-moderate-acute-hypoxic-conditions
#8
Sanjoy K Deb, Lewis A Gough, S Andy Sparks, Lars R McNaughton
Acute moderate hypoxic exposure can substantially impair exercise performance, which occurs with a concurrent exacerbated rise in hydrogen cation (H+) production. The purpose of this study was therefore, to alleviate this acidic stress through sodium bicarbonate (NaHCO3) supplementation and determine the corresponding effects on severe-intensity intermittent exercise performance. Eleven recreationally active individuals participated in this randomised, double-blind, crossover study performed under acute normobaric hypoxic conditions (FiO2% = 14...
January 17, 2018: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/29343427/controlled-attenuation-parameter-and-alcoholic-hepatic-steatosis-diagnostic-accuracy-and-role-of-alcohol-detoxification
#9
Maja Thiele, Vanessa Rausch, Gabriele Fluhr, Maria Kjærgaard, Felix Piecha, Johannes Mueller, Beate Katharina Straub, Monica Lupşor-Platon, Victor De-Ledinghen, Helmut Karl Seitz, Sönke Detlefsen, Bjørn Madsen, Aleksander Krag, Sebastian Mueller
BACKGROUND AND AIMS: Controlled attenuation parameter (CAP) is a novel non-invasive measure of hepatic steatosis, but has not been evaluated in alcoholic liver disease. We therefore aimed to validate CAP for assessment of biopsy-verified alcoholic steatosis and to study the effect of alcohol detoxification on CAP. METHODS: Cross-sectional, biopsy-controlled, diagnostic study in four European liver centers. Consecutive alcohol-overusing patients underwent concomitant CAP, regular ultrasound and liver biopsy...
January 14, 2018: Journal of Hepatology
https://www.readbyqxmd.com/read/29342996/-optimal-energy-supply-in-different-age-groups-of-critically-ill-children-on-mechanical-ventilation
#10
X H Li, J Ji, S Y Qian
Objective: To analyze the resting energy expenditure and optimal energy supply in different age groups of critically ill children on mechanical ventilation in pediatric intensive care unit (PICU). Methods: Patients on mechanical ventilation hospitalized in PICU of Beijing Children's Hospital from March 2015 to March 2016 were enrolled prospectively. Resting energy expenditure of patients was calculated by US Med Graphic company critical care management (CCM) energy metabolism test system after mechanical ventilation...
January 2, 2018: Zhonghua Er Ke za Zhi. Chinese Journal of Pediatrics
https://www.readbyqxmd.com/read/29342907/an-uncommon-case-of-pediatric-esthesioneuroblastoma-presenting-as-siadh-18f-fdg-pet-ct-in-staging-and-post-therapeutic-assessment
#11
Marie Øbro Fosbøl, Anders Bilde, Jeppe Friborg, Eric von Benzon, Andreas Kjær, Christian von Buchwald, Lise Borgwardt
Esthesioneuroblastoma (ENB) is an uncommon neuroendocrine tumor originating from the olfactory neuroepithelium and accounts for 3-6% of all intranasal tumors [¹]. ENBs can be locally aggressive and cause invasion and destruction of surrounding structures. Histological grading and clinical stage at presentation are highly predictive of survival and especially presence of lymph node and distant metastases are determining prognostic factors [²,³,⁴,⁵]. Thus, reliable imaging is essential in these patients...
January 14, 2018: Diagnostics
https://www.readbyqxmd.com/read/29341059/down-regulated-reic-expression-in-lung-carcinogenesis-a-molecular-target-for-gene-therapy
#12
Lei Yang, Shuang Zhao, Pu Xia, Hua-Chuan Zheng
REIC (Reduced Expression in Immortalized Cells) gene is down-regulated in immortalized cells, compared with the normal parental counterparts. Its encoding protein could inhibit colony formation, tumor growth, and induce apoptosis. To investigate the roles of REIC expression in lung cancer, we examined REIC expression in lung cancer cells and tissues by RT-PCR or Western blot, and observed the effects of both recombinant REIC exposure and REIC overexpression on the aggressive phenotypes of lung cancer cells...
January 17, 2018: Histology and Histopathology
https://www.readbyqxmd.com/read/29339556/evidence-of-a-sequestered-imine-intermediate-during-reduction-of-nitrile-to-amine-by-the-nitrile-reductase-quef-from-escherichia-coli
#13
Jihye Jung, Bernd Nidetzky
In the biosynthesis of the tRNA-inserted nucleoside queuosine, the nitrile reductase QueF catalyzes conversion of 7-cyano-7-deazaguanine (preQ0) to 7-aminomethyl-7-deazaguanine (preQ1), a biologically unique four-electron reduction of a nitrile to an amine. The QueF mechanism involves a covalent thioimide adduct between the enzyme and preQ0 which undergoes reduction to preQ1 in two NADPH-dependent steps, presumably via an imine intermediate. Protecting a labile imine from interception by water is fundamental to QueF catalysis for proper enzyme function...
January 16, 2018: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/29337861/protein-from-meat-or-vegetable-sources-in-meals-matched-for-fiber-content-has-similar-effects-on-subjective-appetite-sensations-and-energy-intake-a-randomized-acute-cross-over-meal-test-study
#14
Lone V Nielsen, Marlene D Kristensen, Lars Klingenberg, Christian Ritz, Anita Belza, Arne Astrup, Anne Raben
Higher-protein meals decrease hunger and increase satiety compared to lower-protein meals. However, no consensus exists about the different effects of animal and vegetable proteins on appetite. We investigated how a meal based on vegetable protein (fava beans/split peas) affected ad libitum energy intake and appetite sensations, compared to macronutrient-balanced, iso-caloric meals based on animal protein (veal/pork or eggs). Thirty-five healthy men were enrolled in this acute cross-over study. On each test day, participants were presented with one of four test meals (~3550 kilojoules (kJ) 19% of energy from protein), based on fava beans/split peas (28...
January 16, 2018: Nutrients
https://www.readbyqxmd.com/read/29336572/-hg-scn-3-2-%C3%AE-l-2-an-efficient-secondary-building-unit-for-the-synthesis-of-2d-iron-ii-spin-crossover-coordination-polymers
#15
Daopeng Zhang, Francisco Javier Valverde-Muñoz, Carlos Bartual-Murgui, Lucía Piñeiro-López, M Carmen Muñoz, José Antonio Real
We report an unprecedented series of two-dimensional (2D) spin-crossover (SCO) heterobimetallic coordination polymers generically formulated as {FeII[(HgII(SCN)3)2](L)x}·Solv, where x = 2 for L = tvp (trans-(4,4'-vinylenedipyridine)) (1tvp), bpmh ((1E,2E)-1,2-bis(pyridin-4-ylmethylene)hydrazine) (1bpmh·nCH3OH; n = 0, 1), bpeh ((1E,2E)-1,2-bis(1-(pyridin-4-yl)ethylidene)hydrazine) (1bpeh·nH2O; n = 0, 1) and x = 2.33 for L = bpbz (1,4-bis(pyridin-4-yl)benzene) (1bpbz·nH2O; n = 0, 2/3). The results confirm that self-assembly of FeII, [HgII(SCN)4]2-, and ditopic rodlike bridging ligands L containing 4-pyridyl moieties favors the formation of linear [Fe(μ-L)]n2n+ chains and in situ generated binuclear units {[HgII(SCN)3]2(μ-L)}2-...
January 16, 2018: Inorganic Chemistry
https://www.readbyqxmd.com/read/29336150/chemical-exchange-saturation-transfer-in-chemical-reactions-a-mechanistic-tool-for-nmr-detection-and-characterization-of-transient-intermediates
#16
N Lokesh, Andreas Seegerer, Johnny Hioe, Ruth M Gschwind
The low sensitivity of NMR and transient key intermediates below detection limit are the central problems studying reaction mechanisms by NMR. Sensitivity can be enhanced by hyperpolarization techniques such as dynamic nuclear polarization or the incorporation/interaction of special hyperpolarized molecules. However, all of these techniques require special equipment, are restricted to selective reactions or undesirably influence the reaction pathways. Here, we apply the Chemical Exchange Saturation Transfer (CEST) technique for the first time to NMR detect and characterize previously unobserved transient reaction intermediates in organocatalysis...
January 16, 2018: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/29335326/attendance-of-routine-childcare-visits-in-primary-care-for-children-of-mothers-with-depression-a-nationwide-population-based-cohort-study
#17
Bente Kjær Lyngsøe, Claus Høstrup Vestergaard, Dorte Rytter, Mogens Vestergaard, Trine Munk-Olsen, Bodil Hammer Bech
BACKGROUND: Depression is a common and potentially debilitating illness worldwide. Attendance to routine childcare appointments is a key point of interest in the effort to improve the health and care for families facing depression. AIM: To evaluate the association between maternal depression and offspring non-attendance to the Danish childcare and vaccination programme (CCP) for children from 0-5 years of age. The CCP consists of seven separate visits and several vaccinations...
January 15, 2018: British Journal of General Practice: the Journal of the Royal College of General Practitioners
https://www.readbyqxmd.com/read/29335184/trimellitated-sugarcane-bagasse-a-versatile-adsorbent-for-removal-of-cationic-dyes-from-aqueous-solution-part-i-batch-adsorption-in-a-monocomponent-system
#18
Renata Aparecida Fideles, Gabriel Max Dias Ferreira, Filipe Simões Teodoro, Oscar Fernando Herrera Adarme, Luis Henrique Mendes da Silva, Laurent Frédéric Gil, Leandro Vinícius Alves Gurgel
Trimellitated-sugarcane bagasse (STA) was used as an environmentally friendly adsorbent for removal of the basic dyes auramine-O (AO) and safranin-T (ST) from aqueous solutions at pH 4.5 and 7.0. Dye adsorption was evaluated as a function of STA dosage, agitation speed, solution pH, contact time, and initial dye concentration. Pseudo-first- and pseudo-second-order, Elovich, intraparticle diffusion, and Boyd models were used to model adsorption kinetics. Langmuir, Dubinin-Radushkevich, Redlich-Peterson, Sips, Hill-de Boer, and Fowler-Guggenheim models were used to model adsorption isotherms, while a Scatchard plot was used to evaluate the existence of different adsorption sites...
January 6, 2018: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/29335039/replacing-carbohydrate-during-a-glucose-challenge-with-the-egg-white-portion-or-whole-eggs-protects-against-postprandial-impairments-in-vascular-endothelial-function-in-prediabetic-men-by-limiting-increases-in-glycaemia-and-lipid-peroxidation
#19
Joshua D McDonald, Chureeporn Chitchumroonchokchai, Jinhui Li, Eunice Mah, Allison N Labyk, Elizabeth J Reverri, Kevin D Ballard, Jeff S Volek, Richard S Bruno
Eggs attenuate postprandial hyperglycaemia (PPH), which transiently impairs vascular endothelial function (VEF). We hypothesised that co-ingestion of a glucose challenge with egg-based meals would protect against glucose-induced impairments in VEF by attenuating PPH and oxidative stress. A randomised, cross-over study was conducted in prediabetic men (n 20) who ingested isoenegertic meals (1674 kJ (400 kcal)) containing 100 g glucose (GLU), or 75 g glucose with 1·5 whole eggs (EGG), seven egg whites (WHITE) or two egg yolks (YOLK)...
January 16, 2018: British Journal of Nutrition
https://www.readbyqxmd.com/read/29334454/aurophilic-interactions-in-l-au-x-%C3%A2-l-au-x-dimers-calibration-by-experiment-and-theory
#20
Erik Andris, Prokopis Andrikopoulos, Jiří Schulz, Jan Turek, Aleš Růžička, Jana Roithová, Lubomír Rulíšek
Attractive metallophilic (aurophilic, argentophilic, cuprophilic, …) interactions play an important role in arrangement and stabilization of oligonuclear metal ion complexes. We report a combined experimental and theoretical assessment of aurophilic interactions in closed-shell gold(I) dimers. The experimental binding energies were obtained for charged [(LH)AuCl]+…[(L')AuCl] dimers (L is either a phosphine or a N-heterocyclic carbene ligand) in the gas phase. These energies served for benchmarking of correlated quantum chemical calculations (CCSD(T)-calibrated SCS-MP2/CBS method) that were then applied to neutral [(L)AuX]…[(L')AuX] dimers (X = Cl, Br, I)...
January 15, 2018: Journal of the American Chemical Society
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