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https://www.readbyqxmd.com/read/29778760/electrochemical-disinfection-of-groundwater-for-civil-use-an-example-of-an-effective-endogenous-advanced-oxidation-process
#1
Achille De Battisti, Paolo Formaglio, Sergio Ferro, Mustafa Al Aukidy, Paola Verlicchi
Lab-scale experiments using real groundwater were carried out using the CabECO® reactor system in order to evaluate its suitability for producing safe water, acceptable for civil purposes. Trials were carried out in discontinuous and in continuous mode, analyzing the influence of electrical and hydraulic process parameters on the quality of treated water. The use of highly boron-doped diamond electrodes in the reactor allowed the electrosynthesis of considerable amounts of ozone. Because of the relatively high amount of chloride in the groundwater samples, a mixture of HOCl/ClO- was also synthesized...
May 12, 2018: Chemosphere
https://www.readbyqxmd.com/read/29778669/thyroid-status-in-premenopausal-and-postmenopausal-women-a-biochemical-study-on-insulin-resistance-in-non-obese-overweight-and-obese-type-2-diabetics
#2
Rajendran Jayanthi, Abu Raghavan Srinivasan, Gopal Niranjan
BACKGROUND: Insulin resistance with altered thyroid status in women is observed in type 2 diabetics and varies with advancing age and estrogen profile. We compared thyroid status between premenopausal and postmenopausal women in obese, non obese and overweight type 2 diabetes. METHODOLOGY: We included 301type 2 diabetics who were segregated into premenopausal (n = 100) 33.2% and postmenopausal (n = 201) 66.8% among three sub groups (Non obese, overweight and Obese)...
May 10, 2018: Diabetes & Metabolic Syndrome
https://www.readbyqxmd.com/read/29778339/lower-risk-of-postoperative-arrhythmias-in-congenital-heart-surgery-following-intraoperative-administration-of-magnesium
#3
Dingchao He, Nimisha Aggarwal, David Zurakowski, Richard A Jonas, Charles I Berul, Sridhar Hanumanthaiah, Jeffrey P Moak
OBJECTIVES: Postoperative arrhythmias are common in children undergoing congenital heart surgery. We evaluated whether intraoperative administration of magnesium was associated with a reduced occurrence of specific postoperative arrhythmias, as has been described previously, or had a broader effect on multiple arrhythmia types, and whether there existed a dose-effect of intraoperative magnesium. METHODS: We used a historical prospective observational cohort study...
April 18, 2018: Journal of Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/29778168/development-of-a-novel-myconanomining-approach-for-the-recovery-of-agriculturally-important-elements-from-jarosite-waste
#4
Ankita Bedi, Braj Raj Singh, Sunil K Deshmukh, Nisha Aggarwal, Colin J Barrow, Alok Adholeya
In this study, an ecofriendly and economically viable waste management approach have been attempted towards the biosynthesis of agriculturally important nanoparticles from jarosite waste. Aspergillus terreus strain J4 isolated from jarosite (waste from Debari Zinc Smelter, Udaipur, India), showed good leaching efficiency along with nanoparticles (NPs) formation under ambient conditions. Fourier-transform infrared spectroscopy (FT-IR) and transmission electron microscopy (TEM) confirmed the formation of NPs...
May 2018: Journal of Environmental Sciences (China)
https://www.readbyqxmd.com/read/29778094/substrate-sustained-release-based-high-efficacy-biosynthesis-of-gaba-by-lactobacillus-brevis-ncl912
#5
Qiong Wang, Xiaohua Liu, Jinheng Fu, Shuixing Wang, Yuanhong Chen, Kunpeng Chang, Haixing Li
BACKGROUND: Gamma-aminobutyric acid (GABA) plays a significant role in the food and drug industries. Our previous study established an efficient fed-batch fermentation process for Lactobacillus brevis NCL912 production of GABA from monosodium L-glutamate; however, monosodium L-glutamate may not be an ideal substrate, as it can result in the rapid increase of pH due to decarboxylation. Thus, in this study, L-glutamic acid was proposed as a substrate. To evaluate its potential, key components of the fermentation medium affecting GABA synthesis were re-screened and re-optimized to enhance GABA production from L...
May 19, 2018: Microbial Cell Factories
https://www.readbyqxmd.com/read/29777765/in-vitro-and-in-vivo-evaluation-of-an-oral-sustained-release-hepatoprotective-caffeine-loaded-w-o-pickering-emulsion-formula-containing-wheat-germ-oil-and-stabilized-by-magnesium-oxide-nanoparticles
#6
Heba Elmotasem, Hala K Farag, Abeer A A Salama
The objective of this study was to innovate an effective oral sustained release hepatoprotective formula for - the water soluble drug - caffeine. Caffeine is rapidly absorbed and eliminated which dictates frequent administration to achieve adequate therapeutic effect. A w/o Pickering emulsion incorporating caffeine in the internal phase was primed. It contained wheat germ oil and was stabilized by synthesized magnesium oxide nanoparticles (MgO NPs). Components selection was based on their antioxidant, hepatoprotective and anticarcinogenic effects...
May 16, 2018: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/29776341/different-adaptive-strategies-in-e-coli-populations-evolving-under-macronutrient-limitation-and-metal-ion-limitation
#7
Omar M Warsi, Dan I Andersson, Daniel E Dykhuizen
BACKGROUND: Adaptive responses to nutrient limitation involve mutations that increase the efficiency of usage or uptake of the limiting nutrient. However, starvation of different nutrients has contrasting effects on physiology, resulting in different evolutionary responses. Most studies performed to understand these evolutionary responses have focused only on macronutrient limitation. Hence our understanding of adaptation under limitation of other forms of nutrients is limited. In this study, we compared the evolutionary response in populations evolving under growth-limiting conditions for a macronutrient and a major cation...
May 18, 2018: BMC Evolutionary Biology
https://www.readbyqxmd.com/read/29775933/observing-hno-3-release-dependent-upon-metal-complexes-in-malonic-acid-nitrate-droplets
#8
Xu Shao, Feng-Min Wu, Hui Yang, Shu-Feng Pang, Yun-Hong Zhang
Although the dicarboxylic acid has been reported to react with nitrate for aged internally mixed aerosols in atmosphere, the quantitative nitrate depletion dependent upon composition in particles is still not well constrained. The chemical composition evolutions for malonic acid/sodium nitrate (MA/SN), malonic acid/magnesium nitrate (MA/MN) and malonic acid/calcium nitrate (MA/CN) particles with the organic to inorganic molar ratio (OIR) of 1:1 are investigated by vacuum Fourier transform infrared spectroscopy (FTIR)...
May 9, 2018: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
https://www.readbyqxmd.com/read/29775427/determination-of-fipronil-and-its-metabolites-in-chicken-egg-muscle-and-cake-by-a-modified-quechers-method-coupled-with-lc-ms-ms
#9
Qiaozhen Guo, Shan Zhao, Jing Zhang, Kailun Qi, Zhenxia Du, Bing Shao
An easy-to-use method for determining the levels of fipronil and its metabolites (fipronil-desulfinyl, fipronil-sulfone and fipronil-sulfide) in chicken egg, muscle and cake was developed and validated using a modified quick, easy, cheap, effective, rugged, and safe (QuEChERS) approach coupled with liquid chromatography-tandem mass spectrometry (LC-MS/MS) analysis. The samples were extracted using acetonitrile, salted out with sodium chloride at -20 °C, and then purified by combined PSA and C18 phases and anhydrous magnesium sulfate...
May 18, 2018: Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment
https://www.readbyqxmd.com/read/29775291/reactive-uptake-of-glyoxal-by-ammonium-containing-salt-particles-as-a-function-of-relative-humidity
#10
Masao Gen, Dandan Huang, Chak Keung Chan
Reactions between dissolved ammonia and carbonyls, which form light-absorbing species in atmospheric particles, can be accelerated by actively removing water from the reaction system. Here, we examine the effects of relative humidity (RH) on the reactive uptake of glyoxal (Gly) by aqueous particles of ammonium sulfate (AS), ammonium bisulfate, sodium sulfate, magnesium sulfate, ammonium nitrate (AN), and sodium nitrate. In-situ Raman analysis was used to quantify particle-phase Gly and a colored product, 2,2'-biimidazole (BI) as a function of uptake time...
May 18, 2018: Environmental Science & Technology
https://www.readbyqxmd.com/read/29774532/the-fetus-at-the-tipping-point-modifying-the-outcome-of-fetal-asphyxia
#11
Simerdeep K Dhillon, Christopher A Lear, Robert Galinsky, Guido Wassink, Joanne O Davidson, Sandra Juul, Nicola J Robertson, Alistair J Gunn, Laura Bennet
Brain injury around birth is associated with nearly half of all cases of cerebral palsy. Although brain injury is multifactorial, particularly after preterm birth, acute hypoxia-ischaemia is a major contributor to injury. It is now well established that the severity of injury after HI is determined by a dynamic balance between injurious and protective processes. In addition, mothers who are at risk of premature delivery have high rates of diabetes and antepartum infection/inflammation and are almost universally given treatments such as antenatal glucocorticoids and magnesium sulphate to reduce the risk of death and complications after preterm birth...
May 17, 2018: Journal of Physiology
https://www.readbyqxmd.com/read/29773179/some-bottled-water-may-be-salubrious
#12
Leslie M Klevay
Hard drinking water seems protective against cardiovascular disease compared to soft water. Published data on calcium and magnesium in bottled water products were evaluated to determine water hardness. Data on water chemistry of thirty-three products were obtained from the internet and hardness, as calcium carbonate, was calculated. Approximately two thirds of the products were soft according to criteria of the US Geological Survey; only one fifth were very hard. Beer and wine also were found to be very hard...
July 2018: Journal of Trace Elements in Medicine and Biology
https://www.readbyqxmd.com/read/29773176/effects-of-zinc-magnesium-and-chromium-supplementation-on-cardiometabolic-risk-in-adults-with-metabolic-syndrome-a-double-blind-placebo-controlled-randomised-trial
#13
Ha-Na Kim, Se-Hong Kim, Young-Mi Eun, Sang-Wook Song
The prevalence of metabolic syndrome (MetS) has been increasing rapidly worldwide. The activities of zinc, magnesium and chromium have a potential association with MetS; therefore, we investigated the effects of zinc, magnesium and chromium supplements on metabolic risk factors in adults with MetS. In this double-blind, placebo controlled randomised study, 32 adults with MetS were included in the zinc, magnesium, and chromium-administered group (n = 16) or the placebo group (n = 16) and received either 300 mg magnesium, 600 μg chromium and 36 mg zinc per day or placebo over a 24-week period...
July 2018: Journal of Trace Elements in Medicine and Biology
https://www.readbyqxmd.com/read/29773011/antibacterial-activity-of-novel-strains-of-bacteriophages-an-experimental-approach
#14
Muhammad Imran Qadir, Zunera Chauhdary
The evolution of antibiotic resistance in bacteria has increased research in the development of alternative therapies to conventional drugs. In this study, isolated phages were characterized and antibacterial activity was determined by standard agar disc diffusion method. The phages showed maximum propagation at 37°C to 40°C and highest viability at pH 7. Sugars influenced the bacteriophage viability. Sodium chloride decreased the phage propagation. Calcium chloride and magnesium chloride increased the phage propagation up to a certain limit...
2018: Critical Reviews in Eukaryotic Gene Expression
https://www.readbyqxmd.com/read/29772721/the-effect-of-rod-shaped-long-period-stacking-ordered-phases-evolution-on-corrosion-behavior-of-mg-95-33-zn%C3%A2-y-2-67-alloy
#15
Jingfeng Wang, Weiyan Jiang, Shengfeng Guo, Yang Li, Yao Ma
The morphology evolution of long-period stacking ordered (LPSO) phases on corrosion behavior of Mg95.33 Zn₂Y2.67 alloy is investigated systematically during as-cast, pre-extrusion heat-treated, as-extruded and post-extrusion heat-treated conditions. The second phases in the as-cast alloy are only LPSO phases with a few Y particles. The pre-extrusion heat treatment changed LPSO phases from blocks into a rudimentary rod shape with lamellar structure, subsequently into fine fragments by extrusion, and then into a regular rod shape with lamellar structure followed by post-extrusion heat treatment...
May 16, 2018: Materials
https://www.readbyqxmd.com/read/29772670/ann-surface-roughness-optimization-of-az61-magnesium-alloy-finish-turning-minimum-machining-times-at-prime-machining-costs
#16
Adel Taha Abbas, Danil Yurievich Pimenov, Ivan Nikolaevich Erdakov, Mohamed Adel Taha, Mahmoud Sayed Soliman, Magdy Mostafa El Rayes
Magnesium alloys are widely used in aerospace vehicles and modern cars, due to their rapid machinability at high cutting speeds. A novel Edgeworth⁻Pareto optimization of an artificial neural network (ANN) is presented in this paper for surface roughness ( Ra ) prediction of one component in computer numerical control (CNC) turning over minimal machining time ( Tm ) and at prime machining costs ( C ). An ANN is built in the Matlab programming environment, based on a 4-12-3 multi-layer perceptron (MLP), to predict Ra , Tm , and C , in relation to cutting speed, vc , depth of cut, ap , and feed per revolution, fr ...
May 16, 2018: Materials
https://www.readbyqxmd.com/read/29772442/cognitive-and-hippocampus-biochemical-changes-following-sleep-deprivation-in-the-adult-male-rat
#17
Ebrahim Nabaee, Mahnaz Kesmati, Ali Shahriari, Lotfollah Khajehpour, Mozhgan Torabi
Sleep deprivation (SD) influences physiological processes such as cognitive function. The balance of oxidant and antioxidant markers, neurotrophic factors and magnesium are affected by sleep deprivation but there is no difference between pre and post training sleep deprivation. This study was designed to investigate memory retrieval and biochemical factors such as oxidant and antioxidant enzyme, brain-derived neurotrophic factor (BDNF) and magnesium levels in the hippocampus following pre and post-training sleep deprivation...
May 14, 2018: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29772284/effect-of-excipient-properties-water-activity-and-water-content-on-the-disproportionation-of-a-pharmaceutical-salt
#18
Mitulkumar A Patel, Suman Luthra, Sheri L Shamblin, Kapildev K Arora, Joseph F Krzyzaniak, Lynne S Taylor
Excipients are crucial components of most pharmaceutical formulations. In the case of a solid oral dosage formulation containing the salt form of a weakly ionizable drug, excipient selection is critical, as some excipients are known to cause salt disproportionation (conversion of salt to the free form). Therefore, robust formulation design necessitates an in-depth understanding of the factors impacting salt disproportionation during processing or storage as this can negatively impact product quality and performance...
May 14, 2018: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/29772019/the-effect-of-abandonment-on-vegetation-composition-and-soil-properties-in-molinion-meadows-sw-poland
#19
Grzegorz Swacha, Zoltán Botta-Dukát, Zygmunt Kącki, Daniel Pruchniewicz, Ludwik Żołnierz
Intermittently wet meadows of the Molinion alliance, as with many other grasslands of high-nature value, have become increasingly exposed to abandonment due to their low economic value. The potential consequences of land abandonment are the decrease in species diversity and environmental alterations. The issue of land-use induced changes in plant species composition and soil physico-chemical parameters have been rarely studied in species-rich intermittently wet grasslands. In this study we attempt to i) to identify determinants of plant species composition patterns and ii) to investigate the effect of cessation of mowing on vegetation composition and soil properties...
2018: PloS One
https://www.readbyqxmd.com/read/29771126/magnesium-nanoparticle-plasmonics
#20
John Biggins, Sadegh Yazdi, Emilie Ringe
Nanoparticles of some metals (Cu/Ag/Au) sustain oscillations of their electron cloud called localized surface plasmon resonances (LSPRs). These resonances can occur at optical frequencies and be driven by light, generating enhanced electric fields and spectacular photon scattering. However, current plasmonic metals are rare, expensive, and have a limited resonant frequency range. Recently, much attention has been focused on earth-abundant Al, but Al nanoparticles cannot resonate in the IR. The earth-abundant Mg nanoparticles reported here surmount this limitation...
May 17, 2018: Nano Letters
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