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https://www.readbyqxmd.com/read/29457224/factors-associated-with-nutritional-status-and-dietary-practices-of-bangladeshi-adolescents-in-early-pregnancy
#1
Malay K Mridha, Susana L Matias, Charles D Arnold, Kathryn G Dewey
Bangladesh has a high prevalence of adolescent pregnancy, but little is known about the nutritional status and dietary practices of Bangladeshi adolescents in early pregnancy or associated factors. We used the baseline data of 1552 pregnant adolescents from a longitudinal, cluster-randomized effectiveness trial conducted in northwest Bangladesh. Forty-four percent of the adolescents were short for their age, 36% had low body mass index, 28% were anemic, 10% had iron deficiency, and 32% had vitamin A deficiency...
February 18, 2018: Annals of the New York Academy of Sciences
https://www.readbyqxmd.com/read/29456285/improved-power-and-long-term-performance-of-microbial-fuel-cell-with-fe-n-c-catalyst-in-air-breathing-cathode
#2
Iwona Gajda, John Greenman, Carlo Santoro, Alexey Serov, Chris Melhuish, Plamen Atanassov, Ioannis A Ieropoulos
Power output limitation is one of the main challenges that needs to be addressed for full-scale applications of the Microbial Fuel Cell (MFC) technology. Previous studies have examined electrochemical performance of different cathode electrodes including the development of novel iron based electrocatalysts, however the long-term investigation into continuously operating systems is rare. This work aims to study the application of platinum group metals-free (PGM-free) catalysts integrated into an air-breathing cathode of the microbial fuel cell operating on activated sewage sludge and supplemented with acetate as the carbon energy source...
February 1, 2018: Energy: Technologies, Resources, Reserves, Demands, Impact, Conservation, Management, Policy
https://www.readbyqxmd.com/read/29455137/can-the-watershed-non-point-phosphorus-pollution-be-interpreted-by-critical-soil-properties-a-new-insight-of-different-soil-p-states
#3
Chen Lin, Ronghua Ma, Junfeng Xiong
The physicochemical properties of surface soil play a key role in the fate of watershed non-point source pollution. Special emphasis is needed to identify soil properties that are sensitive to both particulate P (PP) pollution and dissolved P (DP) pollution, which is essential for watershed environmental management. The Chaohu Lake basin, a typical eutrophic lake in China, was selected as the study site. The spatial features of the Non-point Source (NPS) PP loads and DP loads were calculated simultaneously based on the integration of sediment delivery distributed model (SEDD) and pollution loads (PLOAD) model...
February 15, 2018: Science of the Total Environment
https://www.readbyqxmd.com/read/29455027/electrochemical-detection-of-influenza-virus-h9n2-based-on-both-immunomagnetic-extraction-and-gold-catalysis-using-an-immobilization-free-screen-printed-carbon-microelectrode
#4
Maher Sayhi, Oussama Ouerghi, Kamel Belgacem, Marwa Arbi, Yudum Tepeli, Abdeljalil Ghram, Ülkü Anik, Lars Österlund, Dhafer Laouini, Mohamed Fethi Diouani
Influenza is a viral infectious disease considered as a source of many health problems and enormous socioeconomic disruptions. Conventional methods are inadequate for in-field detection of the virus and generally suffer from being laborious and time-consuming. Thus, studies aiming to develop effective alternatives to conventional methods are urgently needed. In this work, we developed an approach for the isolation and detection of influenza A virus subtype H9N2. For this aim, two specific influenza receptors were used...
February 7, 2018: Biosensors & Bioelectronics
https://www.readbyqxmd.com/read/29453917/comparative-chemical-investigation-and-evaluation-of-antioxidant-and-tyrosinase-inhibitory-effects-of-withania-somnifera-l-dunal-and-solanum-nigrum-l-berries
#5
Abdul Hameed, Naveed Akhtar
In the present study, berries of two different species of Solanaceae family, Withania somnifera (WS) and Solanum nigrum (SN), were extracted in methanol and then fractionated with solvents, ranging from non-polar to polar, for their phytochemical profiling and investigation of antioxidant and tyrosinase enzyme inhibition capacity. The methanolic extract and n-hexane, ethyl acetate (WSEA, SNEA) and aqueous fractions were chemically analyzed and evaluated for biological activity. Total flavonoids and total phenolics were quantified in WSEA (96...
March 1, 2018: Acta Pharmaceutica
https://www.readbyqxmd.com/read/29452849/bacterial-communities-in-mining-soils-and-surrounding-areas-under-regeneration-process-in-a-former-ore-mine
#6
Camila Cesário Fernandes, Luciano Takeshi Kishi, Erica Mendes Lopes, Wellington Pine Omori, Jackson Antonio Marcondes de Souza, Lucia Maria Carareto Alves, Eliana Gertrudes de Macedo Lemos
Human activities on the Earth's surface change the landscape of natural ecosystems. Mining practices are one of the most severe human activities, drastically altering the chemical, physical and biological properties of the soil environment. Bacterial communities in soil play an important role in the maintenance of ecological relationships. This work shows bacterial diversity, metabolic repertoire and physiological behavior in five ecosystems samples with different levels of impact. These ecosystems belong to a historical area in Iron Quadrangle, Minas Gerais, Brazil, which suffered mining activities until its total depletion without recovery since today...
February 13, 2018: Brazilian Journal of Microbiology: [publication of the Brazilian Society for Microbiology]
https://www.readbyqxmd.com/read/29450200/nutritional-compositions-and-phytochemical-properties-of-the-edible-flowers-from-selected-zingiberaceae-found-in-thailand
#7
Apinya Rachkeeree, Kuttiga Kantadoung, Ratchuporn Suksathan, Ratchadawan Puangpradab, Paul Alexander Page, Sarana Rose Sommano
The nutritional compositions and phytochemical properties of eight edible flowers of the ginger family (Zingiberaceae) commonly found in Thailand are reported herein. The plant genera investigated were Zingiber (Ginger, Phlai Dam, Krathue), Hedychium (two morphological filament forms), Curcuma (Ao), Etlingera (Torch ginger), Amomum (Chi Kuk), and Alpinia (Galangal), which are eaten fresh or cooked as ingredients in the preparation of many Thai dishes. The proximate compositions (moisture, ash, fiber, protein, fat, and carbohydrate contents) varied among the different genera...
2018: Frontiers in Nutrition
https://www.readbyqxmd.com/read/29448709/cavitation-erosion-behavior-of-electroless-ni-p-coating-and-optimization-of-process-parameter-using-analysis-of-variance-with-orthogonal-array
#8
Il-Cho Park, Seong-Jong Kim
This study investigated the cavitation erosion resistance of electroless Ni-P (EN) coated gray cast iron (GCI) in seawater solution. Furthermore, the optimum coating design parameters were examined to minimize cavitation erosion damage through analysis of variance (ANOVA) based on the L9 orthogonal array. In this study, four coating design factors were used: concentration of source of nickel (A), concentration of reducer agent (B), deposition temperature (C), and pressure of shot peening (D). In accordance with the regulation of the modified ASTM G32, the cavitation erosion experiment was conducted for 1 hour in a seawater solution to find the optimum design parameters which can minimize the cavitation erosion damage...
March 1, 2018: Journal of Nanoscience and Nanotechnology
https://www.readbyqxmd.com/read/29448079/identifying-the-underlying-causes-of-biological-instability-in-a-full-scale-drinking-water-supply-system
#9
Alina Nescerecka, Talis Juhna, Frederik Hammes
Changes in bacterial concentration and composition in drinking water during distribution are often attributed to biological (in)stability. Here we assessed temporal biological stability in a full-scale distribution network (DN) supplied with different types of source water: treated and chlorinated surface water and chlorinated groundwater produced at three water treatment plants (WTP). Monitoring was performed weekly during 12 months in two locations in the DN. Flow cytometric total and intact cell concentration (ICC) measurements showed considerable seasonal fluctuations, which were different for two locations...
February 6, 2018: Water Research
https://www.readbyqxmd.com/read/29448019/recovery-of-black-necked-swans-macrophytes-and-water-quality-in-a-ramsar-wetland-of-southern-chile-assessing-resilience-following-sudden-anthropogenic-disturbances
#10
Eduardo Jaramillo, Nelson A Lagos, Fabio A Labra, Enrique Paredes, Emilio Acuña, Daniel Melnick, Mario Manzano, Carlos Velásquez, Cristian Duarte
In 2004 migration and mortality for unknown reasons of the herbivorous Black necked swan (Cygnus melancorhyphus (Molina, 1782)) occurred within the Río Cruces wetland (southern Chile), a Ramsar Site and nature sanctuary. Before 2004, this wetland hosted the largest breeding population of this water bird in the Neotropic Realm. The concurrent decrease in the spatial occurrence of the aquatic plant Egeria densa Planch. 1849 - the main food source of swans - was proposed as a cause for swan migration and mortality...
February 12, 2018: Science of the Total Environment
https://www.readbyqxmd.com/read/29442678/surface-modification-of-short-carbon-fibers-with-carbon-nanotubes-to-reinforce-epoxy-matrix-composites
#11
Luo Zhanjun, Chen Hui, Wu Jing, Xia Xiaohong, Liu Hongbo, Yang Li
The homogeneous carbon nanotubes (CNTs) directly grown on short cut carbon fibers (CFs) surface by chemical vapor deposition (CVD) using iron nanoparticles as catalyst. The iron nanoparticles were obtained by the reduction of magnetite particles using mixed nitrogen and hydrogen gas flow at 415 °C. Magnetite particles were prepared through a solvothermal reaction, where iron(III) acetylacetone as catalyst source and polylol as solvent. CNTs grown on CFs were used as reinforcement in epoxy (EP). The effects of density of CNTs grown on CFs (CNTs-CFs) and different mass fractions of CNTs-CFs in EP on the composites flexural strength were investigated...
July 1, 2018: Journal of Nanoscience and Nanotechnology
https://www.readbyqxmd.com/read/29440751/identification-of-inorganic-compounds-in-composite-alum-treated-wooden-artefacts-from-the-oseberg-collection
#12
Caitlin M A McQueen, Diego Tamburini, Susan Braovac
Alum-treated wooden artefacts from the Oseberg collection display a great deal of morphological, structural and compositional inhomogeneity. Thus, an in-depth understanding of chemical processes underlying their degradation requires consideration of a variety of local environments. In addition to alum, sources of inorganic compounds include metal parts, corrosion products of which can migrate into the surrounding wood. In order to characterise the inorganic compounds a range of local environments, samples from several locations in a selection of composite objects have been investigated by X-ray diffraction (XRD), Fourier transform infrared (FTIR) spectroscopy, Raman spectroscopy and scanning electron microscopy (SEM)-energy dispersive X-ray spectroscopy (EDS)...
February 13, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29438105/magnetic-resonance-and-photoacoustic-imaging-of-brain-tumor-mediated-by-mesenchymal-stem-cell-labeled-with-multifunctional-nanoparticle-introduced-via-carotid-artery-injection
#13
Yang Qiao, Joy Gumin, Christopher MacLellan, Feng Gao, Richard Bouchard, Frederick Lang, R Jason Stafford, Marites P Melancon
To evaluate the feasibility of visualizing bone marrow-derived human mesenchymal stem cells (MSCs) labeled with a gold-coated magnetic resonance (MR)-active multifunctional nanoparticle (SPIO@Au) for assessing the extent of MSC homing in glioma- bearing mice following carotid artery MSC injection. MATERIALS AND METHODS: Nanoparticle containing superparamagnetic iron oxide coated with gold (SPIO@Au) having a diameter of ~82 nm and maximum absorbance in the near infrared (NIR) region was synthesized...
February 13, 2018: Nanotechnology
https://www.readbyqxmd.com/read/29431403/mildly-elevated-liver-transaminase-levels-causes-and-evaluation
#14
Robert C Oh, Thomas R Hustead, Syed M Ali, Matthew W Pantsari
Mild, asymptomatic elevations (less than five times the upper limit of normal) of alanine transaminase and aspartate transaminase levels are common in primary care. It is estimated that approximately 10% of the U.S. population has elevated transaminase levels. An approach based on the prevalence of diseases that cause asymptomatic transaminase elevations can help clinicians efficiently identify common and serious liver disease. The most common causes of elevated transaminase levels are nonalcoholic fatty liver disease and alcoholic liver disease...
December 1, 2017: American Family Physician
https://www.readbyqxmd.com/read/29430350/bioactive-properties-of-chamaerops-humilis-l-antioxidant-and-enzyme-inhibiting-activities-of-extracts-from-leaves-seeds-pulp-and-peel
#15
Sandra Gonçalves, Joana Medronho, Elsa Moreira, Clara Grosso, Paula B Andrade, Patrícia Valentão, Anabela Romano
In this work we evaluated methanolic extracts from different parts (leaves, seeds, fruit peel and pulp) of Chamaerops humilis L. for antioxidant activity and the ability to inhibit enzymes linked with neurodegenerative diseases: acetylcholinesterase (AChE), butyrylcholinesterase (BChE) and tyrosinase (TYR). The total content of phenolics, flavonoids and condensed tannins was also determined. The antioxidant and inhibitory activities of the extracts varied significantly according to the tissue. Seed extracts showed the greatest ability to scavenge DPPH (IC50 = 81...
February 2018: 3 Biotech
https://www.readbyqxmd.com/read/29421873/phosphorous-speciation-and-solubility-in-aeolian-dust-deposited-in-the-interior-american-west
#16
Zhuojun Zhang, Harland L Goldstein, Richard Reynolds, Yongfeng Hu, Xiaoming Wang, Mengqiang Zhu
Aeolian dust is a significant source of phosphorus (P) to alpine oligotrophic lakes, but P speciation in dust and source sediments, and its release kinetics to lake water, remain unknown. Phosphorous K-edge XANES spectroscopy shows that calcium-bound P (Ca-P) is dominant in 10 of 12 dust samples (41 - 74%) deposited on snow in the central Rocky Mountains and all 42 source sediment samples (the fine fraction) (68 - 80%), with a lower proportion in dust probably because acidic snowmelt dissolves some Ca-P in dust before collection...
February 8, 2018: Environmental Science & Technology
https://www.readbyqxmd.com/read/29421115/a-baseline-study-on-the-concentration-of-trace-elements-in-the-surface-sediments-off-southwest-coast-of-tamil-nadu-india
#17
Prince S Godson, N S Magesh, T Simon Peter, N Chandrasekar, S Krishnakumar, Salom Gnana Thanga Vincent
Forty two surface sediment samples were collected in order to document baseline elemental concentration along the Southwest coast of Tamil Nadu, India. The elements detected were Manganese (Mn), Zinc (Zn), Iron (Fe), Copper (Cu), Nickel (Ni) and Lead (Pb). The concentration of Fe and Mn was primarily controlled by the riverine input. The source of Pb and Zn is attributed to leaded petrol and anti-biofouling paints. The calculated index (EF, Igeo and CF) suggests that the sediments of the study area are significantly enriched with all elements except Pb...
January 2018: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/29415739/hepcidin-an-emerging-and-important-player-in-brain-iron-homeostasis
#18
REVIEW
Driton Vela
Hepcidin is emerging as a new important factor in brain iron homeostasis. Studies suggest that there are two sources of hepcidin in the brain; one is local and the other comes from the circulation. Little is known about the molecular mediators of local hepcidin expression, but inflammation and iron-load have been shown to induce hepcidin expression in the brain. The most important source of hepcidin in the brain are glial cells. Role of hepcidin in brain functions has been observed during neuronal iron-load and brain hemorrhage, where secretion of abundant hepcidin is related with the severity of brain damage...
February 7, 2018: Journal of Translational Medicine
https://www.readbyqxmd.com/read/29415495/chromatographic-and-spectroscopic-identification-and-recognition-of-natural-dyes-uncommon-dyestuff-components-and-mordants-case-study-of-a-16th-century-carpet-with-chintamani-motifs
#19
Olga Otłowska, Marek Ślebioda, Agata Kot-Wasik, Jakub Karczewski, Magdalena Śliwka-Kaszyńska
A multi-tool analytical practice was used for the characterisation of a 16th century carpet manufactured in Cairo. A mild extraction method with hydrofluoric acid has been evaluated in order to isolate intact flavonoids and their glycosides, anthraquinones, tannins, and indigoids from fibre samples. High-performance liquid chromatography coupled to spectroscopic and mass spectrometric detectors was used for the identification of possible marker compounds with special attention paid to natural dyes present in the historical samples...
February 6, 2018: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/29414678/structure-and-function-of-wild-type-and-subunit-depleted-photosystem-i-in-synechocystis
#20
Tirupathi Malavath, Ido Caspy, Sigal Y Netzer-El, Daniel Klaiman, Nathan Nelson
The ability of photosynthetic organisms to use the sun's light as a sole source of energy sustains life on our planet. Photosystems I (PSI) and II (PSII) are large, multi-subunit, pigment-protein complexes that enable photosynthesis, but this intriguing process remains to be explained fully. Currently, crystal structures of these complexes are available for thermophilic prokaryotic cyanobacteria. The mega-Dalton trimeric PSI complex from thermophilic cyanobacterium, Thermosynechococcus elongatus, was solved at 2...
February 4, 2018: Biochimica et Biophysica Acta
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