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blue zones

Amit Kumar Sharma, Sunil Pandey, Krishna Hari Sharma, Yowan Nerthigan, M Shahnawaz Khan, Da-Ren Hang, Hui-Fen Wu
We report a rapid and facile method for detection of hydrogen peroxide (H2 O2 ) in biological fluids using sub-stoichiometric two-dimensional (2D) molybdenum trioxide (α-MoO3-x ) nanoflakes. The two-dimensional nanoflakes, initially blue in color, is oxidized after interaction with hydrogen peroxide thereby changing its oxidation state to form α-MoO3 . The change in oxidation state of nanoflakes transforms from blue to a visually distinct hazy blue color with change in absorption spectrum. The phenomenal property is explored here in sensing up to 34 nM as limit of detection...
July 26, 2018: Analytica Chimica Acta
Jason Nguyen, Liliana Werner, Jason Ludlow, Joah Aliancy, Larry Ha, Bryan Masino, Sean Enright, Ray K Alley, Ruth Sahler
PURPOSE: To evaluate intraocular lens (IOL) power, modulation transfer function (MTF), light transmission, and light scattering of a blue light-filtering IOL before and after power adjustment by a femtosecond laser obtained through increased hydrophilicity of targeted areas within the optic, creating the ability to build a refractive-index-shaping lens within an existing IOL. SETTING: John A. Moran Eye Center, University of Utah, Salt Lake City, Utah, USA. DESIGN: Experimental study...
March 7, 2018: Journal of Cataract and Refractive Surgery
Maria Chiara Fastame, Paul Kenneth Hitchcott, Ilaria Mulas, Marilena Ruiu, Maria Pietronilla Penna
Background : older adults from the Sardinian Blue Zone self-report low depressive symptoms and high psychological well-being. However, the role of dispositional resilience as a determinant of these characteristics is unknown. Objectives : the current study had three aims. First, to investigate associations among several putative predictors, including dispositional resilience and three established markers of positive and negative mental health. Second, to determine if gender differences in dispositional resilience, independent of age and cognitive impairment, are present in this population...
February 26, 2018: Behavioral Sciences
Rupak Roy, Kumar Saurabh, Nicey R Thomas
PURPOSE: To describe multicolor imaging findings in a case of acute retinal pigment epitheliitis. SETTING: Vitreoretinal department of a tertiary care center in Eastern India. METHODS: A 28-year-old lady presented with acute vision loss in the right eye since 3 days. Left eye examination was unremarkable. Best-corrected visual acuity in the right eye was 20/40. Anterior segment examination revealed clear lens with no evidence of inflammation...
February 22, 2018: Retinal Cases & Brief Reports
Rangaswamy Madugundu, Khalid A Al-Gaadi, ElKamil Tola, Abdalhaleem A Hassaballa, Ahmed G Kayad
The crop Water Footprint (WF) can provide a comprehensive knowledge of the use of water through the demarcation of the amount of the water consumed by different crops. The WF has three components: green (WFg), blue (WFb) and grey (WFgr) water footprints. The WFg refers to the rainwater stored in the root zone soil layer and is mainly utilized for agricultural, horticultural and forestry production. The WFb, however, is the consumptive use of water from surface or groundwater resources and mainly deals with irrigated agriculture, industry, domestic water use, etc...
2018: PloS One
L Chiva, J I Pagán, I López, A J Tenza-Abril, L Aragonés, I Sánchez
Actions taken to prevent or reduce coastal erosion often do not have the desired effect, leading to major problems instead of solving the original one. This research focuses on why a nourished beach- with borrowed sand and 0.05% of particles <0.063 mm- causes the presence of suspended particles that are observed by beach users as turbidity. This means that the colour of the water was not its characteristic blue, even with calm wave conditions. This research involved a shoreline evolution analysis and a sedimentological study of the sand from 1977 to 2017...
February 8, 2018: Science of the Total Environment
Wenjing Liu, Fangjie Xu, Ting Lv, Weiwei Zhou, Yao Chen, Chongwei Jin, Lingli Lu, Xianyong Lin
Aluminum (Al) toxicity associated with acid soils represents one of the biggest limitations to crop production worldwide. The root apex of plants is the major perception site of Al toxicity. In Al stressed wheat primary roots, Al accumulation and loss of plasma membrane integrity were highest in the root apex (0-5mm), and decreased along the root axis (5-25mm). To further understand these responses in wheat, spatial profiles of antioxidant responses to Al along the 0-25mm root tip of two wheat genotypes differing in Al tolerance were analyzed...
January 29, 2018: Science of the Total Environment
Chun-Bao Li, Chao Xue, Wei Qi, Ning Wang, Jing Xue, Xiao-Yong Wu, Juan-Li Zhu, Yang Liu, Yu-Jie Liu
OBJECTIVE: To explore highly agglutinative staphylococcin (HAS) pomoting on tendon-bone healing after reconstruction of anterior cruciate ligament(ACL) in rabbits. METHODS: Animal model of ACL reconstruction in 24 mature New Zealand white rabbits(3 months, 2.56 kg on average, either gender) were established using autologous digital long extensor tendon and randomly classified into 2 groups(HAS and control group), 12 rabbits for each group. HAS group was separately injected 0...
June 25, 2017: Zhongguo Gu Shang, China Journal of Orthopaedics and Traumatology
Stephanie Krüger, Gertrud E Morlock
Colored wheat varieties and crosses were analyzed to figure out their anthocyanin profiles, and thus, their potential as health-related food. After method development, the obtained 94 anthocyanin fingerprints allowed the clear differentiation of the blue aleurone and purple pericarp genotypes as well as their breeding lines. The method was trimmed so that the complete analysis of the whole grain flour including sample preparation of up to 20 samples on one plate took less than 3 h (<9 min per sample) and total costs including sample preparation were <1...
February 2, 2018: Journal of Chromatography. A
N Sumru Bayin, Dimitris G Placantonakis
Histologic heterogeneity in glioblastoma (GBM) is highlighted by regional variability in vascular density. Areas of vascular hyperplasia are interspersed with avascular territories, in which necrosis is surrounded by a zone of hypoxic tumor cells expressing stem cell markers, a phenomenon known as pseudopalisading necrosis. This vascular heterogeneity suggests intratumoral oxygen gradients, which regulate cellular and metabolic adaptations in tumor cells. Quantification of tumor vascularity, blood perfusion and oxygenation is therefore critical...
2018: Methods in Molecular Biology
Brandon Demory, Kunook Chung, Adam Katcher, Jingyang Sui, Hui Deng, Pei-Cheng Ku
A parabolic nanolens array coupled to the emission of a nanopillar micro-light emitting diode (LED) color pixel is shown to reduce the far field divergence. For a blue wavelength LED, the total emission is 95% collimated within a 0.5 numerical aperture (NA) zone, a 3.5x improvement over the same LED without a lens structure. This corresponds to a have width half maximum (HWHM) linewidth reduction of 2.85 times. Using a resist reflow and etchback procedure, the nanolens array dimensions and parabolic shape are formed...
February 1, 2018: Nanotechnology
Yusan Yang, Matthew B Dugas, Houston J Sudekum, Sean Murphy, Corinne L Richards-Zawacki
Phenotypic polymorphism is common in animals, and the maintenance of multiple phenotypes in a population requires forces that act against homogenizing drift and selection. Male-male competition can contribute to the stability of a polymorphism when males compete primarily with males of the same phenotype. In and around a contact zone between red and blue lineages of the poison frog Oophaga pumilio, we used simulated territorial intrusions to test the non-exclusive predictions that males would direct more aggression toward males of (i) their own phenotype and/or (ii) the phenotype that is most common in their population...
January 18, 2018: Journal of Evolutionary Biology
Ioannis Lignos, Loredana Protesescu, Dilara Börte Emiroglu, Richard M Maceiczyk, Simon Schneider, Maksym V Kovalenko, Andrew J deMello
Hybrid organic-inorganic perovskites and in particular formamidinium lead halide (FAPbX3, X = Cl, Br, I) perovskite nanocrystals (NCs) have shown great promise for their implementation in optoelectronic devices. Specifically, the Br and I counterparts have shown unprecedented photoluminescence properties, including precise wavelength tuning (530-790 nm), narrow emission linewidths ( less than 100 meV) and high photoluminescence quantum yields (70-90%). However, the controlled formation of blue emitting FAPb(Cl1-xBrx)3 NCs lags behind their green and red counterparts and the mechanism of their formation remains unclear...
January 16, 2018: Nano Letters
Kyoji Matsushima, Noriaki Sonobe
Digitized holography techniques are used to reconstruct three-dimensional (3D) images of physical objects using large-scale computer-generated holograms (CGHs). The object field is captured at three wavelengths over a wide area at high densities. Synthetic aperture techniques using single sensors are used for image capture in phase-shifting digital holography. The captured object field is incorporated into a virtual 3D scene that includes nonphysical objects, e.g., polygon-meshed CG models. The synthetic object field is optically reconstructed as a large-scale full-color CGH using red-green-blue color filters...
January 1, 2018: Applied Optics
Purim Jarujamrus, Rattapol Meelapsom, Somkid Pencharee, Apinya Obma, Maliwan Amatatongchai, Nadh Ditcharoen, Sanoe Chairam, Suparb Tamuang
A smartphone application, called CAnal, was developed as a colorimetric analyzer in paper-based devices for sensitive and selective determination of mercury(II) in water samples. Measurement on the double layer of a microfluidic paper-based analytical device (μPAD) fabricated by alkyl ketene dimer (AKD)-inkjet printing technique with special design doped with unmodified silver nanoparticles (AgNPs) onto the detection zones was performed by monitoring the gray intensity in the blue channel of AgNPs, which disintegrated when exposed to mercury(II) on μPAD...
2018: Analytical Sciences: the International Journal of the Japan Society for Analytical Chemistry
Hitoshi Asano, Yukihide Shiraishi
This article describes a simple and inexpensive microfluidic paper-based analytical device (μPAD) for the determination of hexavalent chromium (CrVI) in water samples. The μPADs were fabricated on paper by photolithography using a photomask printed with a 3D printer and functionalized with reagents for a colorimetric assay. In the μPAD, CrVI reacts with 1,5-diphenylcarbazide to form a violet-colored complex. Images of μPADs were captured with a digital camera; then the red, green, and blue color intensity of each detection zone were measured using images processing software...
2018: Analytical Sciences: the International Journal of the Japan Society for Analytical Chemistry
Wei Liu, Hong-Bo Shi, Zhe Zhang, Sang-Bing Tsai, Yuming Zhai, Quan Chen, Jiangtao Wang
After the Chinese reform and opening up, the construction of economic zones, such as Special Economic Zones, Hi-tech Zones and Bonded Zones, has played an irreplaceable role in China's economic development. Currently, against the background of Chinese economic transition, research on development evaluation of economic zones has become popular and necessary. Similar research usually focuses on one specific field, and the methods that are used to evaluate it are simple. This research aims to analyse the development evaluation of zones by synthesis...
January 2, 2018: International Journal of Environmental Research and Public Health
Alfredo O Barrera-Guzmán, Alexandre Aleixo, Matthew D Shawkey, Jason T Weir
Hybrid speciation is rare in vertebrates, and reproductive isolation arising from hybridization is infrequently demonstrated. Here, we present evidence supporting a hybrid-speciation event involving the genetic admixture of the snow-capped (Lepidothrix nattereri) and opal-crowned (Lepidothrix iris) manakins of the Amazon basin, leading to the formation of the hybrid species, the golden-crowned manakin (Lepidothrix vilasboasi). We used a genome-wide SNP dataset together with analysis of admixture, population structure, and coalescent modeling to demonstrate that the golden-crowned manakin is genetically an admixture of these species and does not represent a hybrid zone but instead formed through ancient genetic admixture...
December 26, 2017: Proceedings of the National Academy of Sciences of the United States of America
Huanyun Liu, Pang Bao, Lufeng Li, Yuqing Wang, Chunxin Xu, Mengyang Deng, Jihang Zhang, Xiaohui Zhao
Endothelial progenitor cells (EPC) participate in vessel recovery and maintenance of normal endothelial function. Therefore, pitavastatin-nanoparticles (NPs)-engineered EPC may be effective in repairing injured vasculature. Pitavastatin-loaded poly(lactic-co-glycolic) acid (PLGA) NPs were obtained via ultrasonic emulsion solvent evaporation with PLGA as the carrier encapsulating pitavastatin. The effects and mechanism of pitavastatin-NPs on EPC proliferation in vitro were evaluated. Then, EPC that internalized pitavastatin-NPs were transplanted into rats after carotid artery injury...
December 22, 2017: Scientific Reports
Rebecca C Adikes, Ryan A Hallett, Brian F Saway, Brian Kuhlman, Kevin C Slep
We developed a novel optogenetic tool, SxIP-improved light-inducible dimer (iLID), to facilitate the reversible recruitment of factors to microtubule (MT) plus ends in an end-binding protein-dependent manner using blue light. We show that SxIP-iLID can track MT plus ends and recruit tgRFP-SspB upon blue light activation. We used this system to investigate the effects of cross-linking MT plus ends and F-actin in Drosophila melanogaster S2 cells to gain insight into spectraplakin function and mechanism. We show that SxIP-iLID can be used to temporally recruit an F-actin binding domain to MT plus ends and cross-link the MT and F-actin networks...
December 19, 2017: Journal of Cell Biology
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