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https://www.readbyqxmd.com/read/28732228/a-facile-method-for-preparation-of-emulsion-using-the-high-gravity-technique
#1
Yan Li, Ran Andy Mei, Zhongqiang Yang
This study demonstrates a new process for preparation of oil-in-water (O/W) emulsion using the high gravity technique. This involves a mixture of oil and water that are passed through a rotating packed bed, under a high shear force, from which oil is emulsified into tiny droplets and subsequently dispersed in water. The process is cycled in order to break the droplets repeatedly and achieve an emulsion with small size and low polydispersity index (PDI). The advantage of the high gravity technique is that the emulsions with a desired size and polydispersity can be rapidly obtained by tuning experimental parameters, such as relative centrifugal force (RCF), cycle times (CT), liquid flow rate (VL) and surfactant concentration (Csurfactant)...
June 13, 2017: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/28731616/inversion-recovery-ultrashort-echo-time-imaging-of-ultrashort-t2-tissue-components-in-ovine-brain-at-3%C3%A2-t-a-sequential-d2-o-exchange-study
#2
Shu-Juan Fan, Yajun Ma, Eric Y Chang, Graeme M Bydder, Jiang Du
Inversion recovery ultrashort echo time (IR-UTE) imaging holds the potential to directly characterize MR signals from ultrashort T2 tissue components (STCs), such as collagen in cartilage and myelin in brain. The application of IR-UTE for myelin imaging has been challenging because of the high water content in brain and the possibility that the ultrashort T2 * signals are contaminated by water protons, including those associated with myelin sheaths. This study investigated such a possibility in an ovine brain D2 O exchange model and explored the potential of IR-UTE imaging for the quantification of ultrashort T2 * signals in both white and gray matter at 3 T...
July 21, 2017: NMR in Biomedicine
https://www.readbyqxmd.com/read/28731319/few-layered-mo-1-x-wxs2-hollow-nanospheres-on-ni3s2-nanorods-heterostructure-as-robust-electrocatalysts-for-overall-water-splitting
#3
Meiyong Zheng, Jing Du, Baopu Hou, Cai-Ling Xu
Owing to the unique optical, electronic and catalytic properties, MoS2 have received increasing interests in electrochemical water splitting. Herein, few-layered Mo(1-x)WxS2 hollow nanospheres modified Ni3S2 heterostructures are prepared through a facile hydrothermal method to further enhance the electro-catalytic performance of MoS2. The doping of W element optimizes the electronic structure of MoS2@Ni3S2, thus improves the conductivity and charge transfer ability of MoS2@Ni3S2. In addition, benefiting from the few-layered hollow structure of Mo(1-x)WxS2, the strong electronic interactions between Mo(1-x)WxS2 and Ni3S2, and the hierarchical structure of 1D nanorods and 3D Ni foam, massive active sites and fast ion and charge transportion are obtained...
July 21, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28731312/gentiana-kurroo-royle-attenuates-the-metabolic-aberrations-in-diabetic-rats-swertiamarin-swertisin-and-lupeol-being-the-possible-bioactive-principles
#4
Khalid Ghazanfar, Khan Mubashir, Showkat A Dar, Tazeen Nazir, Iqra Hameed, Bashir A Ganai, Seema Akbar, Akbar Masood
Background Gentiana kuroo Royle is a medicinally important plant of north-western Himalayas used for various ailments. In the present study, the plant extracts were investigated for the antidiabetic effects in streptozotocin-induced diabetic rats. Methods The impact of the extracts on serum glucose levels of diabetic rats was compared with reference drug - glibenclamide-treated diabetic rats. Streptozotocin injection was used to induce diabetes in fasted rats. Various biochemical, physiological and histopathological parameters in diabetic rats were observed for assessing the antidiabetic activity...
April 29, 2017: Journal of Complementary & Integrative Medicine
https://www.readbyqxmd.com/read/28729216/self-assembled-aunps-for-ingrain-pigmentation-of-silk-fabrics-with-antibacterial-potency
#5
Hanan B Ahmed, Nancy S El-Hawary, Hossam E Emam
Nanogold was self-assembled for ingrain pigmentation of silk fabric with antibacterial properties. The functional groups of silk macromolecular polymeric chains were exploited for generation and stabilization of nanogold. Hydrogen peroxide was used for activation of silk molecular chains through increasing their reactivity and accessibility to be functionalized as manufacturer of nanogold without using any external agents. Effect of procedure sequencing was studied through addition of peroxide firstly (group A) and with Au salt (group B)...
July 17, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28727413/quantifying-the-metabolome-of-pseudomonas-taiwanensis-vlb120-evaluation-of-hot-and-cold-combined-quenching-extraction-approaches
#6
Gossa Garedew Wordofa, Mette Kristensen, Lars Schrübbers, Douglas McCloskey, Jochen Forster, Konstantin Schneider
Absolute quantification of free intracellular metabolites is a valuable tool in both, pathway discovery and metabolic engineering. In this study, we conducted a comprehensive examination of different hot and cold combined quenching/extraction approaches to extract and quantify intracellular metabolites of Pseudomonas taiwanensis VLB120 to provide a useful reference dataset of absolute intracellular metabolite concentrations. The suitability of commonly used metabolomics tools including pressure driven fast filtration system followed by combined quenching/extraction techniques (such as cold methanol/acetonitrile/water, hot water, boiling ethanol/water, as well as cold ethanol/water) were tested and evaluated for P...
July 20, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28727036/supplementation-of-glycerol-or-fructose-via-drinking-water-to-grazing-lambs-on-tissue-glycogen-level-and-lipogenesis
#7
G Volpi-Lagreca, S K Duckett
Lambs ( = 18; 40.1 ± 7.4 kg BW) were used to assess supplementation of glycerol or fructose via drinking water on growth, tissue glycogen levels, postmortem glycolysis, and lipogenesis. Lambs were blocked by BW and allocated to alfalfa paddocks (2 lambs/paddock and 3 paddocks/treatment). Each paddock within a block was assigned randomly to drinking water treatments for 30 d: 1) control (CON), 2) 120 g fructose/L of drinking water (FRU), or 3) 120 g glycerol/L of drinking water (GLY). Lambs grazed alfalfa with free access to water treatments for 28 d and then were fasted in indoor pens for a final 2 d with access to only water treatments...
June 2017: Journal of Animal Science
https://www.readbyqxmd.com/read/28725644/pesticides-curbing-soil-fertility-effect-of-complexation-of-free-metal-ions
#8
Sukhmanpreet Kaur, Vijay Kumar, Mohit Chawla, Luigi Cavallo, Albert Poater, Niraj Upadhyay
Researchers have suggested that the reason behind infertility is pernicious effect of broad spectrum pesticides on non target, beneficial microorganism of soil. Here, studying the chelating effect of selective organophosphate and carbamate pesticides with essential metal ions, at all possible combinations of three different pH (4 ± 0.05, 7 ± 0.05 and 9 ± 0.05) and three different temperatures (15 ± 0.5°C, 30 ± 0.5°C and 45 ± 0.5°C), shows very fast rate of reaction which further increases with increase of pH and temperature...
2017: Frontiers in Chemistry
https://www.readbyqxmd.com/read/28724270/synergistic-effects-of-ad-libitum-low-dose-fructose-drinking-and-low-dose-streptozotocin-treatment-in-wistar-rats-a-mild-model-of-type-2-diabetes
#9
Asie Sadeghi, Maani Beigy, Samira Alizadeh, Hossein Mazloom, Sanaz Vakili, Saideh Ahmadi, Reza Meshkani
To develop a convenient animal model of T2D by pretreatment with low-dose 10% w/v fructose (FRC) solution followed by the injection of low doses of streptozotocin (STZ) in Wistar rats. For this 8-week experimental study; rats were first fed a standard chow ad-libitum diet and either tap water (n=40) or 10% w/v FRC solution (n=40) for 4 weeks. Next, rats in each category were randomly allocated to 4 subgroups (n=10 each) of low-dose STZ (25,35, and 45 mg/kg). The final mean fasting blood sugar (FBG) of FRC+STZ45 (197±55...
May 2017: Acta Medica Iranica
https://www.readbyqxmd.com/read/28724042/hyperglycemia-in-critical-patients-determinants-of-insulin-dose-choice
#10
Aline Klitzke Paliosa, Cassiano Teixeira, Regis Goulart Rosa, Carine Raquel Blatt
Objective: To identify factors that can determine the choice of intermittent subcutaneous regular insulin dose in critically ill patients with hyperglycemia. Method: Cross-sectional study in a general adult ICU with 26 beds, data collected between September and October 2014. The variables analyzed were: sex, age, previous diagnosis of diabetes mellitus, use of corticosteroids, use of lactulose, sepsis, fasting, enteral nutrition, use of dextrose 5% in water, NPH insulin prescription and blood glucose level...
May 2017: Revista da Associação Médica Brasileira
https://www.readbyqxmd.com/read/28723409/layering-of-different-materials-to-achieve-optimal-conditions-for-treatment-of-painful-wounds
#11
T Maver, L Gradišnik, M Kurečič, S Hribernik, D M Smrke, U Maver, K Stana Kleinschek
Despite a range of advanced wound dressings that can facilitate wound healing, there are still no clinically used dressings for effective local pain management. The latter was the main motivation of the present study. We designed a novel wound dressing with three layers. A macro-porous polyethylene terephthalate (PET) mesh with incorporated lidocaine, a fast-acting local anesthetic, was chosen as the layer in direct contact with the skin. Fast release from this layer enables an immediate pain relieving effect, caused by dressing changes...
July 16, 2017: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/28723119/fast-response-and-flexible-nanocrystal-based-humidity-sensor-for-monitoring-human-respiration-and-water-evaporation-on-skin
#12
Shinya Kano, Kwangsoo Kim, Minoru Fujii
We develop a fast-response and flexible nanocrystal-based humidity sensor for real-time monitoring of human activity: respiration and water evaporation on skin. A silicon-nanocrystal film is formed on a polyimide film by spin-coating the colloidal solution and is used as a flexible and humidity-sensitive material in a humidity sensor. The flexible nanocrystal-based humidity sensor shows a high sensitivity; current through the nanocrystal film changes by 5 orders of magnitude in the relative humidity range of 8-83%...
June 23, 2017: ACS Sensors
https://www.readbyqxmd.com/read/28722398/fractionation-and-concentration-of-high-salinity-textile-wastewater-using-an-ultra-permeable-sulfonated-thin-film-composite
#13
Meng Li, Yujian Yao, Wen Zhang, Junfeng Zheng, Xuan Zhang, Lianjun Wang
A sulfonated thin-film composite (TFC) nanofiltration membrane was fabricated using 2,2'-benzidinedisulfonic acid (BDSA) and trimesoyl chloride (TMC) on a polyether sulfone substrate by conventional interfacial polymerization. Due to a nascent barrier layer with a loose architecture, the obtained TFC-BDSA-0.2 membrane showed an ultra-high pure water permeability of 48.1 ± 2.1 L-1 m-2 h-1 bar-1, and a considerably low NaCl retention ability of <1.8% over a concentration range of 10-100 g L-1. The membrane, which possesses a negatively charged surface, displayed an excellent rejection of over 99% towards Congo red (CR), and allowed the fast fractionation of high-salinity textile wastewater...
July 19, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28722356/hansen-solubility-parameters-for-assay-method-optimization-of-simvastatin-ramipril-atenolol-hydrochlorothiazide-and-aspirin-in-human-plasma-using-liquid-chromatography-with-tandem-mass-spectrometry
#14
Murali Mohan Reddy Devalapalli, Hanumanth Srikanth Cheruvu, Thejaswi Yertha, Vijaya Bhaskar Veeravalli, Sunitha Sampathi, Savithri Shivakumar
A simple, specific, sensitive validated method was developed using liquid chromatography with tandem mass spectrometry with electrospray ionization of human plasma for the simultaneous estimation of drugs (simvastatin, ramipril, atenolol, hydrochlorothiazide and aspirin) of Polycap(TM) capsule used in cardiovascular therapy. The interaction of these actives including internal standards between the stationary and mobile phase were investigated using Hansen solubility parameters. Chromatographic separation was performed on Phenomenex Synergi Polar-RP (30 × 2 mm, 4 μm) column with a gradient mobile phase composition of acetonitrile and 5 mM ammonium formate for positive mode and 0...
July 19, 2017: Journal of Separation Science
https://www.readbyqxmd.com/read/28722113/specialised-stomatal-humidity-responses-underpin-ecological-diversity-in-c3-bromeliads
#15
Jamie Males, Howard Griffiths
The Neotropical Bromeliaceae display an extraordinary level of ecological variety, with species differing widely in habit, photosynthetic pathway, and growth form. Divergences in stomatal structure and function, hitherto understudied in treatments of bromeliad evolutionary physiology, could have been critical to the generation of variety in ecophysiological strategies among the bromeliads. Since humidity is a key factor in bromeliad niches, we focussed on stomatal responses to vapour pressure deficit (VPD)...
July 19, 2017: Plant, Cell & Environment
https://www.readbyqxmd.com/read/28720878/comparison-of-dna-pma-and-rna-based-16s-rrna-illumina-sequencing-for-detection-of-live-bacteria-in-water
#16
Ru Li, Hein Min Tun, Musarrat Jahan, Zhengxiao Zhang, Ayush Kumar, Dilantha Fernando, Annemieke Farenhorst, Ehsan Khafipour
The limitation of 16S rRNA gene sequencing (DNA-based) for microbial community analyses in water is the inability to differentiate live (dormant cells as well as growing or non-growing metabolically active cells) and dead cells, which can lead to false positive results in the absence of live microbes. Propidium-monoazide (PMA) has been used to selectively remove DNA from dead cells during downstream sequencing process. In comparison, 16S rRNA sequencing (RNA-based) can target live microbial cells in water as both dormant and metabolically active cells produce rRNA...
July 18, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28720808/preparation-of-polydopamine-coated-graphene-oxide-fe3o4-imprinted-nanoparticles-for-selective-removal-of-fluoroquinolone-antibiotics-in-water
#17
Feng Tan, Min Liu, Suyu Ren
Antibiotics in water have recently caused increasing concerns for public health and ecological environments. In this work, we demonstrated polydopamine-coated graphene oxide/Fe3O4 (PDA@GO/Fe3O4) imprinted nanoparticles coupled with magnetic separation for fast and selective removal of fluoroquinolone antibiotics in water. The nanoparticles were prepared by the self-polymerization of dopamine using sarafloxacin as a template. The imprinted PDA film of 10~20 nm uniformly covered the surface of GO/Fe3O4 providing selective binding sites...
July 18, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28719053/microwave-assisted-synthesis-of-metal-organic-framework-mil-101-nanocrystals-as-sorbent-and-pseudostationary-phase-in-capillary-electrophoresis-for-the-separation-of-anthraquinones-in-environmental-water-samples
#18
Yue Liu, Jia Hu, Yan Li, Yun-Tao Shang, Jia-Qi Wang, Ye Zhang, Zhong-Liang Wang
In this work, a CE method was developed to separate five anthraquinones: aloe-emodin, rhein, emodin, chrysophanol and physcion. The CE method used a nano-sized metal organic framework MIL-101 (nMIL-101) as pseudostationary phase (PSP) and sorbent for dispersed particle extraction (DPE). The nMIL-101 was synthesized by microwave technique and was characterized by UV-vis, TEM, Zeta potential, X-ray diffraction spectrometry and micropore physisorption. In this method, anthraquinones were adsorbed by nMIL-101 of a fast kinetics within 10 min and then separated by CE...
July 18, 2017: Electrophoresis
https://www.readbyqxmd.com/read/28718251/comparison-of-dietary-practices-and-body-mass-index-among-educated-housewives-and-working-women-in-karachi
#19
Lubna Raza, Tahira Mohsin Ali, Abid Hasnain
BACKGROUND: Body Mass Index (BMI) is considered as a major determinant of health. The objective of study was to find out differences between dietary practices, as well as BMI in educated housewives and working woman. It is supposed that both study groups may have difference in work pressures with resultant diverse preferences for food. This can affect health status particularly in relation to obesity in women. Furthermore, we selected participants with 14 years' education expecting basic awareness of healthful diet...
April 2017: Journal of Ayub Medical College, Abbottabad: JAMC
https://www.readbyqxmd.com/read/28718095/changes-in-sub-soil-river-water-quality-upon-its-open-storage-a-case-study
#20
A K Mohanty, K K Satpathy, M V R Prasad
A study was carried out to investigate the changes in the physicochemical and biological properties of sub-soil river water upon its storage in a man-made reservoir. Palar sub-soil and reservoir water samples were collated fortnightly for a period of 5 years (2010-2014). The open reservoir is used as a reliable raw water source for condenser cooling systems and for the demineralizing (DM) plant input of Fast Breeder Test Reactor (FBTR), Madras Atomic Power Station (MAPS), and other laboratories at Kalpakkam, southeast coast of India...
August 2017: Environmental Monitoring and Assessment
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