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https://www.readbyqxmd.com/read/28429744/a-forest-of-sub-1-5-nm-wide-single-walled-carbon-nanotubes-over-an-engineered-alumina-support
#1
Ning Yang, Meng Li, Jörg Patscheider, Seul Ki Youn, Hyung Gyu Park
A precise control of the dimension of carbon nanotubes (CNTs) in their vertical array could enable many promising applications in various fields. Here, we demonstrate the growth of vertically aligned, single-walled CNTs (VA-SWCNTs) with diameters in the sub-1.5-nm range (0.98 ± 0.24 nm), by engineering a catalyst support layer of alumina via thermal annealing followed by ion beam treatment. We find out that the ion beam bombardment on the alumina allows the growth of ultra-narrow nanotubes, whereas the thermal annealing promotes the vertical alignment at the expense of enlarged diameters; in an optimal combination, these two effects can cooperate to produce the ultra-narrow VA-SWCNTs...
April 21, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28428793/transcriptomics-targeted-metabolomics-and-gene-expression-of-blackberry-leaves-and-fruits-indicate-flavonoid-metabolic-flux-from-leaf-to-red-fruit
#2
Enrique Gutierrez, Ana García-Villaraco, José A Lucas, Ana Gradillas, F Javier Gutierrez-Mañero, Beatriz Ramos-Solano
Blackberries (Rubus spp.) are among the high added value food products relevant for human health due to the increasing evidence of the beneficial effects of polyphenols, which are very abundant in these fruits. Interestingly, these compounds also play a role on plant physiology, being especially relevant their role in plant defense against biotic and abiotic stress. Hence, we hypothesize that since blackberry fruits have high amounts of flavonols and anthocyanins, leaves would also have high amounts of these compounds, and can be studied as a source of active molecules; furthermore, leaf synthesis would support their high contents in fruits...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28428298/genome-sequence-of-staphylococcus-saprophyticus-dpc5671-a-strain-isolated-from-cheddar-cheese
#3
Andrea S Bertuzzi, Caitriona M Guinane, Fiona Crispie, Kieran N Kilcawley, Paul L H McSweeney, Mary C Rea
The draft genome sequence of Staphylococcus saprophyticus DPC5671, isolated from cheddar cheese, was determined. S. saprophyticus is a common Gram-positive bacterium detected on the surface of smear-ripened cheese and other fermented foods.
April 20, 2017: Genome Announcements
https://www.readbyqxmd.com/read/28425468/transcriptome-analysis-of-mango-mangifera-indica-l-fruit-epidermal-peel-to-identify-putative-cuticle-associated-genes
#4
Julio C Tafolla-Arellano, Yi Zheng, Honghe Sun, Chen Jiao, Eliel Ruiz-May, Miguel A Hernández-Oñate, Alberto González-León, Reginaldo Báez-Sañudo, Zhangjun Fei, David Domozych, Jocelyn K C Rose, Martín E Tiznado-Hernández
Mango fruit (Mangifera indica L.) are highly perishable and have a limited shelf life, due to postharvest desiccation and senescence, which limits their global distribution. Recent studies of tomato fruit suggest that these traits are influenced by the expression of genes that are associated with cuticle metabolism. However, studies of these phenomena in mango fruit are limited by the lack of genome-scale data. In order to gain insight into the mango cuticle biogenesis and identify putative cuticle-associated genes, we analyzed the transcriptomes of peels from ripe and overripe mango fruit using RNA-Seq...
April 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28424491/understanding-the-ion-induced-elongation-of-silver-nanoparticles-embedded-in-silica
#5
Ovidio Peña-Rodríguez, Alejandro Prada, José Olivares, Alicia Oliver, Luis Rodríguez-Fernández, Héctor G Silva-Pereyra, Eduardo Bringa, José Manuel Perlado, Antonio Rivera
In this work we have studied the elongation of silver nanoparticles irradiated with 40 MeV Bromine ions by means of in situ optical measurements, transmission electron microscopy and molecular dynamics simulations. The localized surface plasmon resonance of silver nanoparticles has a strong dependence on the particle shape and size, which allowed us to obtain the geometrical parameters with remarkable accuracy by means of a fit of the optical spectra. Optical results have been compared with transmission electron microscopy images and molecular dynamics simulations and the agreement is excellent in both cases...
April 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28418001/effects-of-calcination-temperature-for-rate-capability-of-triple-shelled-znfe2o4-hollow-microspheres-for-lithium-ion-battery-anodes
#6
Hojin Hwang, Haeun Shin, Wan-Jin Lee
Triple-shelled ZnFe2O4 hollow microspheres (ZFO) as anode materials for lithium ion battery are prepared through a one-pot hydrothermal reaction using the composite solution consisting of sucrose in water and metal ions in ethylene glycol (EG), followed by different calcination processes. The architectures of ZFO micro spheres are differently synthesized through a mutual cooperation of inward and outward ripening with three different calcination temperatures. Thin triple-shelled ZnFe2O4 hollow microspheres calcined at 450 °C (ZFO-450) delivers a high reversible capacity of 932 mA h g(-1) at a current density of 2 A g(-1) even at the 200(th) cycle without obvious decay...
April 18, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28416885/effect-of-chitosan-treatment-on-strawberry-allergen-related-gene-expression-during-ripening-stages
#7
Milena Petriccione, Francesco Mastrobuoni, Luigi Zampella, Elvira Nobis, Giuseppe Capriolo, Marco Scortichini
The effectiveness of a chitosan coating treatment on the allergen-related genes expression of three strawberry cultivars (Fragaria × ananassa Duch., namely cvs. "Sabrina", "Candonga" and "Jonica") harvested at three ripening stages was evaluated. Fruits were treated with a 1% chitosan coating and stored at 20 °C for 48 h. Three genes, encoding Fra a1, Fra a3 and Fra a4 allergens, were evaluated by real-time qPCR. The transcript levels of several genes showed different patterns during ripening stages in strawberry cultivars but were up-regulated by chitosan treatment...
April 2017: Journal of Food Science and Technology
https://www.readbyqxmd.com/read/28415031/carotenoid-accumulation-in-durian-durio-zibethinus-fruit-is-affected-by-ethylene-via-modulation-of-carotenoid-pathway-gene-expression
#8
Apinya Wisutiamonkul, Charles Ampomah-Dwamena, Andrew C Allan, Saichol Ketsa
Carotenoid content in durian (Durio zibethinus) fruit is an important aspect of fruit quality, with different cultivars distinguished by differing pigmentation. We have studied the dependence of carotenogenesis on ethylene. Fruit of the cultivar 'Chanee' harvested at the mature stage were either left untreated (controls), treated with 1-methylcyclopropene (1-MCP) for 12 h, or treated with application of an aqueous ethephon solution to the stem end, or treated for 12 h with 1-MCP followed by ethephon application...
March 31, 2017: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/28411584/illuminating-colors-regulation-of-carotenoid-biosynthesis-and-accumulation-by-light
#9
REVIEW
Briardo Llorente, Jaime F Martinez-Garcia, Claudia Stange, Manuel Rodriguez-Concepcion
Light stimulates the biosynthesis of carotenoids and regulates the development of plastid structures to accommodate these photoprotective pigments. Work with Arabidopsis revealed molecular factors coordinating carotenoid biosynthesis and storage with photosynthetic development during deetiolation, when underground seedlings emerge to the light. Some of these factors also adjust carotenoid biosynthesis in response to plant proximity (i.e., shade), a mechanism that was readapted in tomato to monitor fruit ripening progression...
April 12, 2017: Current Opinion in Plant Biology
https://www.readbyqxmd.com/read/28411210/photoperiod-throughout-the-maternal-life-cycle-not-photoperiod-during-seed-imbibition-influences-germination-in-arabidopsis-thaliana
#10
Toshiyuki Imaizumi, Gabriela Auge, Kathleen Donohue
PREMISE OF THE STUDY: Plants adjust their phenology in response to seasonal cues experienced both by their parents and by themselves, and coordinating responses to these cues is necessary for expressing adaptive phenology. We investigated how cues are integrated across time to influence an important progeny phenotype, i.e., seed germination. METHODS: We used Arabidopsis thaliana to investigate how the photoperiod experienced by maternal parents and by progeny influences seed germination...
April 14, 2017: American Journal of Botany
https://www.readbyqxmd.com/read/28409909/macroporous-silica-with-thick-framework-for-steam-stable-and-high-performance-poly-ethyleneimine-silica-co2-adsorbent
#11
Kyungmin Min, Woosung Choi, Minkee Choi
Poly(ethyleneimine) (PEI)/silica has been widely studied as a solid adsorbent for post-combustion CO2 capture. In this work, a highly macroporous silica (MacS) synthesized by secondary sintering of fumed silica is compared with various mesoporous silicas having different pore structures as a support for PEI. Silicas with large pore diameter and volume enabled high CO2 adsorption kinetics and capacity because pore occlusion by the supported PEI was minimized. The steam stability of the silica structures increased with the silica framework thickness owing to suppressed framework ripening...
April 13, 2017: ChemSusChem
https://www.readbyqxmd.com/read/28407933/influence-of-postharvest-treatments-on-qualitative-and-chemical-parameters-of-tarocco-blood-orange-fruits-to-be-used-for-fresh-chilled-juice
#12
C Pannitteri, A Continella, L Lo Cicero, A Gentile, S La Malfa, E Sperlinga, E M Napoli, T Strano, G Ruberto, L Siracusa
Tarocco "Sant'Alfio" is a late ripening blood orange cultivar. Blood oranges are more and more appreciated from consumers for their high nutraceutical value due to the presence of bioactive compounds including vitamin C, polyphenols, flavonoids and hydroxycinnamic acids. The aim of this work is to set up a reliable protocol for postharvest storage of the very-late Tarocco "Sant'Alfio" orange to prolong the availability of this product in the market to be used for fresh chilled orange juice production. Fruits were subjected to three storage treatments (20days at 1°C plus 50days at 4°C; 70days at 4°C; 70days at 20°C)...
September 1, 2017: Food Chemistry
https://www.readbyqxmd.com/read/28405165/enhancement-of-physicochemical-properties-of-nanocolloidal-carrier-loaded-with-cyclosporine-for-topical-treatment-of-psoriasis-in-vitro-diffusion-and-in-vivo-hydrating-action
#13
Siti Hajar Musa, Mahiran Basri, Hamid Reza Fard Masoumi, Norashikin Shamsudin, Norazlinaliza Salim
Psoriasis is a chronic autoimmune disease that cannot be cured. It can however be controlled by various forms of treatment, including topical, systemic agents, and phototherapy. Topical treatment is the first-line treatment and favored by most physicians, as this form of therapy has more patient compliance. Introducing a nanoemulsion for transporting cyclosporine as an anti-inflammatory drug to an itchy site of skin disease would enhance the effectiveness of topical treatment for psoriasis. The addition of nutmeg and virgin coconut-oil mixture, with their unique properties, could improve cyclosporine loading and solubility...
2017: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/28403954/effectiveness-and-safety-of-induction-of-labor-for-term-breech-presentations
#14
G Bleu, J Demetz, S Michel, A Drain, V Houfflin-Debarge, P Deruelle, D Subtil
In term breech deliveries, vaginal delivery can be safely envisioned in some conditions (related to patient selection and obstetrician experience). Very few data are currently available, however, about the possibility of inducing labor in these situations. OBJECTIVE: To assess the effectiveness and safety of induction of labor for breech presentations. STUDY DESIGN: Retrospective comparative hospital-based study of a continuous series of term breech deliveries from 2000 to 2010...
January 2017: J Gynecol Obstet Hum Reprod
https://www.readbyqxmd.com/read/28399997/evaluation-of-qpcr-and-plate-counting-for-quantifying-thermophilic-starters-in-cheese
#15
Christine Achilleos, Françoise Berthier
The respective inputs of plate counting and qPCR for the quantification of starters in cheese were evaluated using hard-cooked cheeses made with various starter combinations. Five starter strains were quantified at their different growth phases, from 0.5 h to day 214 of manufacture: one strain of Streptococcus thermophilus (ST) and two strains each of Lactobacillus delbrueckii (LD) and Lactobacillus helveticus (LH). Numbers of colony-forming units (CFU) were obtained by plate counting (PC) and qPCR (GNCFU)...
August 2017: Food Microbiology
https://www.readbyqxmd.com/read/28399674/optimization-and-validation-of-folin-ciocalteu-method-for-the-determination-of-total-polyphenol-content-of-pu-erh-tea
#16
Marilena Musci, Shicong Yao
Pu-erh tea is a post-fermented tea that has recently gained popularity worldwide, due to potential health benefits related to the antioxidant activity resulting from its high polyphenolic content. The Folin-Ciocalteu method is a simple, rapid, and inexpensive assay widely applied for the determination of total polyphenol content. Over the past years, it has been subjected to many modifications, often without any systematic optimization or validation. In our study, we sought to optimize the Folin-Ciocalteu method, evaluate quality parameters including linearity, precision and stability, and then apply the optimized model to determine the total polyphenol content of 57 Chinese teas, including green tea, aged and ripened Pu-erh tea...
April 12, 2017: International Journal of Food Sciences and Nutrition
https://www.readbyqxmd.com/read/28397885/oxygen-promoted-catalyst-sintering-influences-number-density-alignment-and-wall-number-of-vertically-aligned-carbon-nanotubes
#17
Wenbo Shi, Jinjing Li, Erik S Polsen, C Ryan Oliver, Yikun Zhao, Eric R Meshot, Michael Barclay, D Howard Fairbrother, A John Hart, Desiree L Plata
A lack of synthetic control and reproducibility during vertically aligned carbon nanotube (CNT) synthesis has stifled many promising applications of organic nanomaterials. Oxygen-containing species are particularly precarious in that they have both beneficial and deleterious effects and are notoriously difficult to control. Here, we demonstrated diatomic oxygen's ability, independent of water, to tune oxide-supported catalyst thin film dewetting and influence nanoscale (diameter and wall number) and macro-scale (alignment and density) properties for as-grown vertically aligned CNTs...
April 20, 2017: Nanoscale
https://www.readbyqxmd.com/read/28397706/nucleation-and-growth-process-of-atomic-layer-deposition-platinum-nanoparticles-on-strontium-titanate-nanocuboids
#18
Chuandao Wang, Linhua Hu, Kenneth Poeppelmeier, Peter C Stair, Laurence Marks
Uniform, well-dispersed platinum nanoparticles were grown on SrTiO3 nanocuboids via atomic layer deposition (ALD) using (methylcyclopentadienyl)trimethylplatinum (MeCpPt(Me)3) and water. For the first half-cycle of the deposition particles formed through two sequential processes: initial nucleation and growth. The final particle size after a single complete ALD cycle was dependent on the reaction temperature which alters the net Pt deposition per cycle. Additional cycles resulted in further growth of previously formed particles...
May 5, 2017: Nanotechnology
https://www.readbyqxmd.com/read/28395330/contributions-to-the-dynamics-of-cervix-remodeling-prior-to-term-and-preterm-birth%C3%A2
#19
Steven M Yellon
Major clinical challenges for obstetricians and neonatologists result from early cervix remodeling and preterm birth. Complications related to cervix remodeling or delivery account for significant morbidity in newborns and peripartum mothers. Understanding morphology and structure of the cervix in pregnant women is limited mostly to the period soon before and after birth. However, evidence in rodent models supports a working hypothesis that a convergence of factors promotes a physiological inflammatory process that degrades the extracellular collagen matrix and enhances biomechanical distensibility of the cervix well before the uterus develops the contractile capabilities for labor...
January 1, 2017: Biology of Reproduction
https://www.readbyqxmd.com/read/28384620/recovering-traditional-raw-milk-tetilla-cheese-flavour-and-sensory-attributes-by-using-kocuria-varians-and-yarrowia-lipolytica-adjunct-cultures
#20
J A Centeno, J I Garabal, F Docampo, J M Lorenzo, J Carballo
The rationale of the present study was to evaluate the potential of microbial adjunct cultures including Kocuria varians and/or Yarrowia lipolytica strains in the recovery of the typical sensory profile of traditional (raw-milk) Tetilla cheese. Four batches of Tetilla cheese, a short ripened cows' milk cheese produced in Galicia (NW Spain), were made in duplicate from pasteurized milk inoculated with different microbial cultures. A control batch was manufactured by adding a mesophilic commercial D-starter only...
March 22, 2017: International Journal of Food Microbiology
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