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https://www.readbyqxmd.com/read/28545446/whole-genome-sequencing-reveals-within-host-genetic-changes-in-paired-meningococcal-carriage-isolates-from-ethiopia
#1
Guro K Bårnes, Ola Brønstad Brynildsrud, Bente Børud, Bereket Workalemahu, Paul A Kristiansen, Demissew Beyene, Abraham Aseffa, Dominique A Caugant
BACKGROUND: Meningococcal colonization is a prerequisite for transmission and disease, but the bacterium only very infrequently causes disease while asymptomatic carriage is common. Carriage is highly dynamic, showing a great variety across time and space within and across populations, but also within individuals. The understanding of genetic changes in the meningococcus during carriage, when the bacteria resides in its natural niche, is important for understanding not only the carriage state, but the dynamics of the entire meningococcal population...
May 25, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28545298/design-and-fabrication-of-a-novel-stimulus-feedback-anticorrosion-coating-featured-by-rapid-self-healing-functionality-for-protection-of-magnesium-alloy
#2
ChenDi Ding, JianHua Xu, Ling Tong, GuangCai Gong, Wei Jiang, JiaJun Fu
Corrosion potential stimulus-responsive smart nanocontainers (CP-SNCs), are designed and synthesized based on the installation of the supramolecular assemblies (bipyridinium ⊂ water-soluble pillar[5]arenes) onto the exterior surface of magnetic nanovehicles (Fe3O4@mSiO2), linked by disulfide linkers. The supramolecular assemblies with high binding affinity as gatekeepers effectively block the encapsulated organic corrosion inhibitor, 8-hydroxyquinoline (8-HQ), within the mesopores of Fe3O4@mSiO2. When the corrosion potential of magnesium alloy (-1...
May 26, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28545131/major-changes-in-microbial-diversity-and-community-composition-across-gut-sections-of-a-juvenile-panchlora-cockroach
#3
Erin A Gontang, Frank O Aylward, Camila Carlos, Tijana Glavina Del Rio, Mansi Chovatia, Alison Fern, Chien-Chi Lo, Stephanie A Malfatti, Susannah G Tringe, Cameron R Currie, Roberto Kolter
Investigations of gut microbiomes have shed light on the diversity and genetic content of these communities, and helped shape our understanding of how host-associated microorganisms influence host physiology, behavior, and health. Despite the importance of gut microbes to metazoans, our understanding of the changes in diversity and composition across the alimentary tract, and the source of the resident community are limited. Here, using community metagenomics and 16S rRNA gene sequencing, we assess microbial community diversity and coding potential in the foregut, midgut, and hindgut of a juvenile Panchlora cockroach, which resides in the refuse piles of the leaf-cutter ant species Atta colombica...
2017: PloS One
https://www.readbyqxmd.com/read/28539734/honey-and-health-a-review-of-recent-clinical-research
#4
REVIEW
Saeed Samarghandian, Tahereh Farkhondeh, Fariborz Samini
Honey is one of the most appreciated and valued natural products introduced to humankind since ancient times. Honey is used not only as a nutritional product but also in health described in traditional medicine and as an alternative treatment for clinical conditions ranging from wound healing to cancer treatment. The aim of this review is to emphasize the ability of honey and its multitude in medicinal aspects. Traditionally, honey is used in the treatment of eye diseases, bronchial asthma, throat infections, tuberculosis, thirst, hiccups, fatigue, dizziness, hepatitis, constipation, worm infestation, piles, eczema, healing of ulcers, and wounds and used as a nutritious supplement...
April 2017: Pharmacognosy Research
https://www.readbyqxmd.com/read/28533898/reconstructing-a-herbivore-s-diet-using-a-novel-rbcl-dna-mini-barcode-for-plants
#5
David L Erickson, Elizabeth Reed, Padmini Ramachandran, Norman A Bourg, William J McShea, Andrea Ottesen
Next Generation Sequencing and the application of metagenomic analyses can be used to answer questions about animal diet choice and study the consequences of selective foraging by herbivores. The quantification of herbivore diet choice with respect to native versus exotic plant species is particularly relevant given concerns of invasive species establishment and their effects on ecosystems. While increased abundance of white-tailed deer (Odocoileus virginianus) appears to correlate with increased incidence of invasive plant species, data supporting a causal link is scarce...
May 2017: AoB Plants
https://www.readbyqxmd.com/read/28506427/italy-introduces-pre-and-post-operation-monitoring-phases-for-offshore-seismic-exploration-activities
#6
C Fossati, B Mussi, R Tizzi, G Pavan, D S Pace
Concern is growing that marine fauna can be affected by noise such as naval sonar, pile driving or geophysical surveys, among others. Literature reports a variety of animal reactions to human noise (from apparently null or negligible to strong). However, conclusive results on its effects on marine mammals at individual and population level are still lacking. In 2015, the Italian Environmental Impact Assessment Commission mandated seismic operators apply a standard scientific protocol comparing marine mammal presence before, during, and after offshore seismic survey...
May 12, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/28505834/dynamic-phases-clustering-and-chain-formation-for-driven-disk-systems-in-the-presence-of-quenched-disorder
#7
Y Yang, D McDermott, C J Olson Reichhardt, C Reichhardt
We numerically examine the dynamic phases and pattern formation of two-dimensional monodisperse repulsive disks driven over random quenched disorder. We show that there is a series of distinct dynamic regimes as a function of increasing drive, including a clogged or pile-up phase near depinning, a homogeneous disordered flow state, and a dynamically phase separated regime consisting of high-density crystalline regions surrounded by a low density of disordered disks. At the highest drives the disks arrange into one-dimensional moving chains...
April 2017: Physical Review. E
https://www.readbyqxmd.com/read/28495764/draft-genome-sequence-of-geobacillus-sp-lemmy01-a-thermophilic-bacterium-isolated-from-the-site-of-a-burning-grass-pile
#8
Yuri Pinheiro Alves de Souza, Fábio Faria da Mota, Alexandre Soares Rosado
We report here the 3,586,065-bp draft genome of Geobacillus sp. LEMMY01, which was isolated (axenic culture) from a thermophilic chemolitoautotrophic consortium obtained from the site of a burning grass pile. The genome contains biosynthetic gene clusters coding for secondary metabolites, such as terpene and lantipeptide, confirming the biotechnological potential of this strain.
May 11, 2017: Genome Announcements
https://www.readbyqxmd.com/read/28490128/n-%C3%AE%C2%B5-carboxymethyl-lysine-and-n-%C3%AE%C2%B5-carboxyethyl-lysine-in-tea-and-the-factors-affecting-their-formation
#9
Ye Jiao, Jialiang He, Fengli Li, Guanjun Tao, Shuang Zhang, Shikang Zhang, Fang Qin, Maomao Zeng, Jie Chen
The levels of N(ε)-(carboxymethyl)lysine (CML) and N(ε)-(carboxyethyl)lysine (CEL) in 99 tea samples from 14 geographic regions, including 44 green, 7 oolong, 41 black, and 7 dark teas were determined by liquid chromatography-tandem mass spectrometry (LC-MS/MS). The CML and CEL contents varied from 11.0 to 1701μg/g tea and 4.6 to 133μg/g tea, respectively. Dark tea presented the highest levels of CML and CEL, whereas green and oolong teas presented the lowest levels. Five kinds of catechins in the tea were also analyzed, and spearman's correlation coefficients showed that all the catechins negatively correlated with CML and CEL...
October 1, 2017: Food Chemistry
https://www.readbyqxmd.com/read/28485694/childhood-pneumonia-diagnostics-community-health-workers-and-national-stakeholders-differing-perspectives-of-new-and-existing-aids
#10
Hollie Spence, Kevin Baker, Alexandra Wharton-Smith, Akasiima Mucunguzi, Lena Matata, Tedila Habte, Diana Nanyumba, Anteneh Sebsibe, Thol Thany, Karin Källander
BACKGROUND: Pneumonia heavily contributes to global under-five mortality. Many countries use community case management to detect and treat childhood pneumonia. Community health workers (CHWs) have limited tools to help them assess signs of pneumonia. New respiratory rate (RR) counting devices and pulse oximeters are being considered for this purpose. OBJECTIVE: To explore perspectives of CHWs and national stakeholders regarding the potential usability and scalability of seven devices to aid community assessment of pneumonia signs...
2017: Global Health Action
https://www.readbyqxmd.com/read/28484774/fracture-mechanisms-in-multilayer-phosphorene-assemblies-from-brittle-to-ductile
#11
Ning Liu, Jiawang Hong, Xiaowei Zeng, Ramana Pidaparti, Xianqiao Wang
The outstanding mechanical performance of nacre has stimulated numerous studies on the design of artificial nacres. Phosphorene, a new two-dimensional (2D) material, has a crystalline in-plane structure and non-bonded interaction between adjacent flakes. Therefore, multi-layer phosphorene assemblies (MLPs), in which phosphorene flakes are piled up in a staggered manner, may exhibit outstanding mechanical performance, especially exceptional toughness. Therefore, molecular dynamics simulations are performed to study the dependence of the mechanical properties on the overlap distance between adjacent phosphorene layers and the number of phosphorene flakes per layer...
May 24, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28478781/comparing-measured-calcium-and-vitamin-d-intakes-with-perceptions-of-intake-in-canadian-young-adults-insights-for-designing-osteoporosis-prevention-education
#12
Alyson Holland, Tina Moffat
OBJECTIVE: To identify the relationship between perceptions of Ca and vitamin D consumption and actual intakes to inform the design of osteoporosis prevention education. DESIGN: An FFQ was used to approximate usual monthly Ca and vitamin D intakes among a group of young Canadians. Qualitative interviews and a food card pile sort activity explored individuals' perceptions of nutrient intakes. The FFQ was used to assess nutrient adequacy for individual participants and the qualitative interviews and pile sort were analysed using thematic content analysis...
May 8, 2017: Public Health Nutrition
https://www.readbyqxmd.com/read/28474922/perfect-transmission-through-disordered-media
#13
C G King, S A R Horsley, T G Philbin
The transmission of a wave through a randomly chosen "pile of plates" typically decreases exponentially with the number of plates, a phenomenon closely related to Anderson localization. In apparent contradiction, we construct disordered planar permittivity profiles which are complex valued (i.e., have reactive and dissipative properties) that appear to vary randomly with position, yet are one-way reflectionless for all angles of incidence and exhibit a transmission coefficient of unity. In addition to these complex-valued "random" planar permittivity profiles, we construct a family of real-valued, two-way reflectionless and perfectly transmitting disordered permittivity profiles that function only for a single angle of incidence and a narrow frequency range...
April 21, 2017: Physical Review Letters
https://www.readbyqxmd.com/read/28465182/from-the-children-s-perspective-what-are-candy-snacks-and-meals
#14
Elizabeth L Adams, Jennifer S Savage
OBJECTIVE: There remains a lack of consensus on what distinguishes candy (i.e. features sugar as a principal ingredient, also called sweets or lollies), snack foods, and foods served at meals; therefore, this study examined characteristics elementary-aged children use to distinguish between these food categories. METHODS: Participants were children aged 5-8 years (N = 41). Children were given 39 cards, each containing an image of a common American food (e.g. ice cream, fruit)...
April 29, 2017: Appetite
https://www.readbyqxmd.com/read/28456879/anti-inflammatory-effect-as-a-mechanism-of-effectiveness-underlying-the-clinical-benefits-of-pelotherapy-in-osteoarthritis-patients-regulation-of-the-altered-inflammatory-and-stress-feedback-response
#15
E Ortega, I Gálvez, M D Hinchado, J Guerrero, L Martín-Cordero, S Torres-Piles
The purpose of the present investigation was to evaluate whether an anti-inflammatory effect together with an improvement of the regulation of the interaction between the inflammatory and stress responses underlies the clinical benefits of pelotherapy in osteoarthritis (OA) patients. This study evaluated the effects of a 10-day cycle of pelotherapy at the spa centre 'El Raposo' (Spain) in a group of 21 OA patients diagnosed with primary knee OA. Clinical assessments included pain intensity using a visual analog scale; pain, stiffness and physical function using the Western Ontario and McMaster Universities Arthritis Index; and health-related quality of life using the EuroQol-5D questionnaire...
April 29, 2017: International Journal of Biometeorology
https://www.readbyqxmd.com/read/28450702/complement-factors-c4-and-c3-are-down-regulated-in-response-to-short-term-overfeeding-in-healthy-young-men
#16
Caroline Foghmar, Charlotte Brøns, Katrine Pilely, Allan Vaag, Peter Garred
Insulin resistance is associated with high circulating level of complement factor C3. Animal studies suggest that improper complement activation mediates high-fat-diet-induced insulin resistance. Individuals born with low birth weight (LBW) are at increased risk of developing insulin resistance. We hypothesized that high-fat overfeeding (HFO) increase circulating C3 and induce complement activation in a birth weight differential manner. Twenty LBW and 26 normal birth weight (NBW) young men were studied using a randomised crossover design...
April 27, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28444609/density-assessment-and-mapping-of-microorganisms-around-a-biocomposting-plant-in-sanandaj-iran
#17
Sanaz Rashidi, B Shahmoradi, Afshin Maleki, Kiomars Sharafi, Ebrahim Darvishi
Exposure to microorganisms can cause various diseases or exacerbate the excitatory responses, inflammation, dry cough and shortness of breath, reduced lung function, chronic obstructive pulmonary disease, and allergic response or allergic immune. The aim of the present study was to investigate the density of microorganisms around the air of processing facilities of a biocomposting plant. Each experiment was carried out according to ASTM E884-82 (2001) method. The samples were collected from inhaled air in four locations of the plant, which had a high traffic of workers and employees, including screen, conveyor belt, aerated compost pile, and static compost pile...
May 2017: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/28434529/stochastic-multicomponent-reactive-transport-analysis-of-low-quality-drainage-release-from-waste-rock-piles-controls-of-the-spatial-distribution-of-acid-generating-and-neutralizing-minerals
#18
Daniele Pedretti, K Ulrich Mayer, Roger D Beckie
In mining environmental applications, it is important to assess water quality from waste rock piles (WRPs) and estimate the likelihood of acid rock drainage (ARD) over time. The mineralogical heterogeneity of WRPs is a source of uncertainty in this assessment, undermining the reliability of traditional bulk indicators used in the industry. We focused in this work on the bulk neutralizing potential ratio (NPR), which is defined as the ratio of the content of non-acid-generating minerals (typically reactive carbonates such as calcite) to the content of potentially acid-generating minerals (typically sulfides such as pyrite)...
April 12, 2017: Journal of Contaminant Hydrology
https://www.readbyqxmd.com/read/28433916/a-novel-method-for-contributing-to-composting-start-up-at-low-temperature-by-inoculating-cold-adapted-microbial-consortium
#19
Xin-Yu Xie, Yue Zhao, Qing-Hong Sun, Xue-Qin Wang, Hong-Yang Cui, Xu Zhang, Yan-Jie Li, Zi-Min Wei
Low temperature climate presented a technical challenge to start-up composting in northern region of China. This study investigated if the cold-adapted microbial consortium (CAMC) could promote composting start-up at low temperature. In this work, the CAMC was inoculated when food waste was composted at 10°C. The results showed that inoculating CAMC accelerated the piles temperature effectively, the piles passed through the start-up period within 37h. Moreover, the inoculants could enhance the abundances of dominant strains related to organic matters degradation rate...
April 11, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28431522/comparative-proteomic-analysis-of-neisseria-meningitidis-wildtype-and-dpra-null-mutant-strains-links-dna-processing-to-pilus-biogenesis
#20
Getachew Tesfaye Beyene, Shewit Kalayou, Tahira Riaz, Tone Tonjum
BACKGROUND: DNA processing chain A (DprA) is a DNA binding protein which is ubiquitous in bacteria, and is required for DNA transformation to various extents among bacterial species. However, the interaction of DprA with competence and recombination proteins is poorly understood. Therefore, the proteomes of whole Neisseria meningitidis (Nm) wildtype and dprA mutant cells were compared. Such a comparative proteomic analysis increases our understanding of the interactions of DprA with other Nm components and may elucidate its potential role beyond DNA processing in transformation...
April 21, 2017: BMC Microbiology
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