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https://www.readbyqxmd.com/read/28812544/photoelectric-response-properties-under-uv-red-light-irradiation-of-zno-nanorod-arrays-coated-with-vertically-aligned-mos2-nanosheets
#1
Yuzhu Zhang, Jianping Xu, Shaobo Shi, Yanyan Gao, Xiangguo Zhao, Chengtai Wei, Xiaosong Zhang, Lan Li
MoS2 with layered structure and distinct physical properties has attracted attention for electronic or optoelectronic devices. The photoelectric response properties of MoS2/ZnO heterojunctions based devices fabricated by spin-coating MoS2 nanosheets solutions on ZnO nanorod arrays (NRs) were investigated. The results revealed that MoS2 nanosheets were vertically aligned on the surface of ZnO NRs and the devices exhibit good photoresponse stability and reproducibility under UV and red light illuminations. The vertically aligned MoS2 nanosheets facilitate the fast photogenerated carrier separation and transport...
August 16, 2017: Nanotechnology
https://www.readbyqxmd.com/read/28810964/a-study-on-the-tactical-safety-of-endotracheal-intubation-under-darkness
#2
Sedat Bilge, Attila Aydin, Meltem Bilge, Cemile Aydin, Erdem Cevik, Mehmet Eryilmaz
OBJECTIVE: Strict blackout discipline is extremely important for all military units. To be able to effectively determine wound characteristics and perform the necessary interventions at nighttime, vision and light restrictions can be mitigated through the use of tactical night vision goggles (NVGs). The lamp of the classical laryngoscope (CL) can be seen with the naked eye; infrared light, on the other hand, cannot be perceived without the use of NVGs. The aim of the study is to evaluate the safety of endotracheal intubation (ETI) procedures in the dark under tactically safe conditions with modified laryngoscope (ML) model...
July 2017: Military Medicine
https://www.readbyqxmd.com/read/28810231/cr-induced-cellular-injury-and-necrosis-in-glycine-max-l-biochemical-mechanism-of-oxidative-damage-in-chloroplast
#3
Kalimuthu Balasaraswathi, Sivalingam Jayaveni, Janardhanam Sridevi, Dhanasingh Sujatha, Kavati Phebe Aaron, Chellan Rose
Chromium-induced toxicity and mechanisms of cell death involved in plants are yet to be fully elucidated. To understand the events of these processes, the stress response of the soybean plant using trivalent and hexavalent chromium compounds, namely, basic chromium sulphate (BCS) and potassium dichromate (K2Cr2O7) was investigated. The leaf surface morphology for stomatal aperture, wax deposition and presence of trichomes for chromium accumulation was examined by SEM-EDAX and light microscopy. The leaf mesophyll cell integrity was identified by trypan blue staining; chlorophyll autofluorescence, ROS generation and mitochondrial function were studied by fluorescence microscopy using different dyes...
August 2, 2017: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/28809539/polymersomes-with-endosomal-ph-induced-vesicle-to-micelle-morphology-transition-and-a-potential-application-for-controlled-doxorubicin-delivery
#4
Turgay Yildirim, Anja Traeger, Pelin Sungur, Stephanie Hoeppener, Carolin Kellner, Ilknur Yildirim, David Pretzel, Stephanie Schubert, Ulrich S Schubert
A series of pH responsive block copolymers were synthesized via the reversible addition-fragmentation chain transfer (RAFT) polymerization of 3,4-dihydro-2H-pyran (DHP) protected 2-hydroxyethyl methacrylate (HEMA) (2-((tetrahydro-2H-pyran-2-yl)oxy)ethyl methacrylate (THP-HEMA)) and 2-(dimethylamino) ethyl methacrylate (DMAEMA) using p(THP-HEMA) as a macro chain transfer agent (mCTA). The degree of polymerization (DP) of the p(THP-HEMA) block was fixed to 35, whereas the DP of the p(DMAEMA) block was systematically varied from 21 to 50...
August 15, 2017: Biomacromolecules
https://www.readbyqxmd.com/read/28808031/changes-in-aggregation-states-of-light-harvesting-complexes-as-a-mechanism-for-modulating-energy-transfer-in-desert-crust-cyanobacteria
#5
Leeat Bar Eyal, Reza Ranjbar Choubeh, Eyal Cohen, Ido Eisenberg, Carmen Tamburu, Márta Dorogi, Renata Ünnep, Marie-Sousai Appavou, Reinat Nevo, Uri Raviv, Ziv Reich, Győző Garab, Herbert van Amerongen, Yossi Paltiel, Nir Keren
In this paper we propose an energy dissipation mechanism that is completely reliant on changes in the aggregation state of the phycobilisome light-harvesting antenna components. All photosynthetic organisms regulate the efficiency of excitation energy transfer (EET) to fit light energy supply to biochemical demands. Not many do this to the extent required of desert crust cyanobacteria. Following predawn dew deposition, they harvest light energy with maximum efficiency until desiccating in the early morning hours...
August 14, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28807931/identification-of-novel-growth-regulators-in-plant-populations-expressing-random-peptides
#6
Zhilong Bao, Maureen A Clancy, Raquel F Carvalho, Kiona Elliott, Kevin M Folta
The use of chemical genomics approaches allows the identification of small molecules that integrate into biological systems, thereby changing discrete processes that influence growth, development or metabolism. Libraries of chemicals are applied to living systems, and changes in phenotype are observed, potentially leading to the identification of new growth regulators. This work describes an approach that is the nexus of chemical-genomics and synthetic biology. Here each plant in an extensive population synthesizes a unique small peptide arising from a transgene composed of a randomized nucleic acid sequence core, flanked by translational start, stop, and cysteine-encoding (for disulfide cyclization) sequences...
August 14, 2017: Plant Physiology
https://www.readbyqxmd.com/read/28807479/multifactorial-analyses-revealed-optimal-aquaculture-modalities-improving-husbandry-fitness-without-clear-effect-on-stress-and-immune-status-of-pikeperch-sander-lucioperca
#7
Sébastien Baekelandt, Baptiste Redivo, Syaghalirwa N M Mandiki, Thibaut Bournonville, Alexis Houndji, Benoît Bernard, Najlae El Kertaoui, Mélodie Schmitz, Pascal Fontaine, Jean-Noël Gardeur, Yannick Ledoré, Patrick Kestemont
High mortality and impairment in growth rate during pikeperch (Sander lucioperca) ongrowing are among the major bottlenecks for its development in aquaculture. These failures may be related to high stress responsiveness since the rearing conditions are not yet optimized for this species. The objectives were to characterize the stress and immunological responses of pikeperch to major aquaculture modalities, and to identify the optimal aquaculture conditions for improving its welfare status. In a screening experiment, eight factors considered as relevant for the welfare of pikeperch were compared in two modalities using a fractional multifactorial design (2(8-4))...
August 11, 2017: General and Comparative Endocrinology
https://www.readbyqxmd.com/read/28805895/genetic-parameters-of-carcass-and-meat-quality-traits-in-different-muscles-longissimus-dorsi-and-semimembranosus-of-hanwoo-korean-cattle
#8
M S A Bhuiyan, H J Kim, D H Lee, S H Lee, S H Cho, B S Yang, S D Kim, S H Lee
We estimated heritability () and genetic and phenotypic correlations for carcass and meat quality traits of longissimus dorsi (LD) and semimembranosus (SM) muscles in 30-mo-old Hanwoo steers. Variance and covariance components were estimated using REML procedures under univariate and bivariate models. The mean carcass weight (CWT), eye muscle area (EMA), back fat thickness (BFT), and marbling score (MS) were 428.20 ± 46.30 kg, 87.38 ± 8.54 cm2, 13.00 ± 5.14 mm, and 5.21 ± 1.56, respectively. The mean CIE reflectance of meat lightness (L*), redness (a*), and yellowness (b*) were 40...
August 2017: Journal of Animal Science
https://www.readbyqxmd.com/read/28805541/lack-of-foxe3-coding-mutation-in-a-case-of-congenital-aphakia
#9
Yusuke Sano, Yusuke Matsukane, Akihisa Watanabe, Ko-Hei Sonoda, Hiroyuki Kondo
PURPOSE: To report the findings in a patient with congenital primary aphakia, a rare disease known to be caused by mutations in the FOXE3 gene. METHODS: The clinical appearances and visual functions of the patient were determined from the medical records. Genetic analyses were performed to search for mutations in the FOXE3 gene by Sanger sequencing and whole exome sequencing. RESULTS: The 2-month-old male patient first presented with bilateral congenital aphakia associated with microphthalmia, corneal opacity, and dysplasia of the anterior segment...
August 14, 2017: Ophthalmic Genetics
https://www.readbyqxmd.com/read/28801823/quantification-of-light-screening-by-anthocyanins-in-leaves-of-berberis-thunbergii
#10
Lars Nichelmann, Wolfgang Bilger
Up to 40% of incident light was screened in red Berberis leaves in vivo by anthocyanins, resulting also in up to 40% reduction of light-limited photosynthesis. The biological function of anthocyanins in leaves has been strongly discussed, but the hypothesis of a screening function is favored by most authors. For an evaluation of the function as photoprotective pigments, a quantification of their screening of the mesophyll is important. Here, chlorophyll fluorescence excitation of leaves of a red and a green variety of Berberis thunbergii was used to estimate the extent of screening by anthocyanins at 545 nm and over the whole photosynthetically active wavelength range...
August 11, 2017: Planta
https://www.readbyqxmd.com/read/28801261/long-wavelength-red-light-produces-hyperopia-in-juvenile-and-adolescent-tree-shrews
#11
Timothy J Gawne, Alexander H Ward, Thomas T Norton
In infant tree shrews, exposure to narrow-band long-wavelength (red) light, that stimulates long-wavelength sensitive cones almost exclusively, slows axial elongation and produces hyperopia. We asked if red light produces hyperopia in juvenile and adolescent animals, ages when plus lenses are ineffective. Animals were raised in fluorescent colony lighting (100-300 lux) until they began 13 days of red-light treatment at 11 (n=5, "infant"), 35 (n=5, "juvenile") or 95 (n=5, "adolescent") days of visual experience (DVE)...
August 8, 2017: Vision Research
https://www.readbyqxmd.com/read/28800107/sequestration-effect-on-the-open-cyclic-switchable-property-of-warfarin-induced-by-cyclodextrin-time-resolved-fluorescence-study
#12
Naji Al-Dubaili, Na'il Saleh
The excited-state lifetimes of the anticoagulant drug warfarin (W) in water and in the absence and presence of methyl-β-cyclodextrins (Me-β-CD) were recorded using time-resolved fluorescence measurements. Selective excitation of the open and cyclic protonated isomers of W were acquired with laser emitting diodes (LED) producing 320 and 280 nm excitation pulses, respectively. Formation of the inclusion complex was checked by UV-visible absorption spectroscopy, and the values of binding constants (2.9 × 10³ M(-1) and 4...
August 11, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28800099/portuguese-honeys-from-different-geographical-and-botanical-origins-a-4-year-stability-study-regarding-quality-parameters-and-antioxidant-activity
#13
Sonia Soares, Diana Pinto, Francisca Rodrigues, Rita C Alves, M Beatriz P P Oliveira
Portuguese honeys (n = 15) from different botanical and geographical origins were analysed regarding their quality parameters (diastase activity, hydroxymethylfurfural content, moisture and pH), colour (L*, a*, b*) and antioxidant profile (total phenolics content, total flavonoids content, DPPH• scavenging activity, and ferric reducing power). The samples were analysed fresh and after 4-years of storage (at 25 °C and protected from light). The hydroxymethylfurfural content and diastase activity of the fresh samples were in accordance with the recommended values described in the legislation...
August 11, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28798722/autonomic-neuropathy-and-albuminocytologic-dissociation-in-cerebrospinal-fluid-as-the-presenting-features-of-primary-amyloidosis-a-case-report
#14
Jingjing Li, Yi Li, Hongbing Chen, Shihui Xing, Huiyu Feng, Dawei Liu, Dilong Wang, Jinsheng Zeng, Yuhua Fan
OBJECTIVE: Primary amyloidosis is a disease with a poor prognosis and multi-organ involvement. Here, we report the clinical and pathological features of a patient with primary amyloidosis featuring autonomic neuropathy as the initial symptom and albuminocytologic dissociation in the cerebrospinal fluid (CSF). METHODS: The patient was a 60-year-old Chinese male with numbness, orthostatic hypotension, and gastrointestinal symptoms. For diagnosis, we performed an electromyogram (EMG), lumbar puncture, Bence Jones protein urine test, serum electrophoresis blood test, sural nerve and rectal membrane biopsies, transthyretin (TTR) gene sequencing, and bone marrow puncture...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28798481/red-660%C3%A2-nm-or-near-infrared-810%C3%A2-nm-photobiomodulation-stimulates-while-blue-415%C3%A2-nm-green-540%C3%A2-nm-light-inhibits-proliferation-in-human-adipose-derived-stem-cells
#15
Yuguang Wang, Ying-Ying Huang, Yong Wang, Peijun Lyu, Michael R Hamblin
We previously showed that blue (415 nm) and green (540 nm) wavelengths were more effective in stimulating osteoblast differentiation of human adipose-derived stem cells (hASC), compared to red (660 nm) and near-infrared (NIR, 810 nm). Intracellular calcium was higher after blue/green, and could be inhibited by the ion channel blocker, capsazepine. In the present study we asked what was the effect of these four wavelengths on proliferation of the hASC? When cultured in proliferation medium there was a clear difference between blue/green which inhibited proliferation and red/NIR which stimulated proliferation, all at 3 J/cm(2)...
August 10, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28796568/contribution-of-human-smooth-muscle-cells-to-amyloid-angiopathy-in-al-light-chain-amyloidosis
#16
Moiz Vora, Christopher G Kevil, Guillermo A Herrera
OBJECTIVE: Amyloid light-chain (AL) amyloidosis is a disease process that often compromises the peripheral vascular system and leads to systemic end-organ dysfunction. Although amyloid formation in vessel walls is a multifaceted process, the assembly of the native light chains (LCs) into amyloid fibrils is central to its pathogenesis. Recent evidence suggests that endocytosis and endolysosomal processing of immunoglobin LCs by host cells is essential to the formation of amyloid fibrils that are deposited in at least some tissues...
August 10, 2017: Ultrastructural Pathology
https://www.readbyqxmd.com/read/28796298/new-insights-into-the-molecular-characteristics-behind-the-function-of-renilla-luciferase
#17
Zahra Fanaei Kahrani, Mohamad Reza Ganjalikhany, Seyed Mohammad Mahdi Rasa, Rahman Emamzadeh
Renilla Luciferase (RLuc) is a blue light emitter protein which can be applied as a valuable tool in medical diagnosis. But due to lack of the crystal structure of RLuc-ligand complex, the functional motions and catalytic mechanism of this enzyme remain largely unknown. In the present study, the active site properties and the ligand-receptor interactions of the native RLuc and its red-shifted light emitting variant (Super RLuc 8) were investigated using molecular docking approach, molecular dynamics (MD) analysis, and MM-PBSA method...
August 10, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/28795890/point-of-care-fluorescence-imaging-predicts-the-presence-of-pathogenic-bacteria-in-wounds-a-clinical-study
#18
M Y Rennie, L Lindvere-Teene, K Tapang, R Linden
OBJECTIVE: Bacteria in chronic wounds are invisible to the naked eye and can lead to delayed wound healing. Point-of-care bacterial fluorescence imaging illuminates a wound with 405nm light, triggering bacteria to produce red fluorescence and enabling real-time bacterial localisation. Prospective, single-blind clinical trials (clinicaltrials.gov #NCT02682069, #NCT03091361) were conducted to determine the positive predictive value (PPV) of this red fluorescence for detecting bacteria in chronic wounds...
August 2, 2017: Journal of Wound Care
https://www.readbyqxmd.com/read/28793850/glycation-oxidation-and-glycoxidation-of-igg-a-biophysical-biochemical-immunological-and-hematological-study
#19
Sidra Islam, Moinuddin, Abdul Rouf Mir, Alok Raghav, Safia Habib, Khursheed Alam, Asif Ali
Glycation and oxidation induce structural alterations in the proteins in an inter-dependent manner with consequent pathological implications. The published literature presents wide range of modifications in conformational characteristics of proteins by glycation and oxidation; however, there is little data that could elaborate the cumulative effect of both the processes. This study has analysed the modifications in IgG by methylglyoxal (MG) (glycative stress), hydroxyl radical (OH(•)) (oxidative stress) and by their combined action i...
August 9, 2017: Journal of Biomolecular Structure & Dynamics
https://www.readbyqxmd.com/read/28792764/coordination-polymer-gels-with-modular-nanomorphologies-tunable-emissions-and-stimuli-responsive-behavior-based-on-an-amphiphilic-tripodal-gelator
#20
Papri Sutar, Tapas Kumar Maji
The recent upsurge in research on coordination polymer gels (CPGs) stems from their synthetic modularity, nanoscale processability, and versatile functionalities. Here we report self-assembly of an amphiphilic, tripodal low-molecular weight gelator (L) that consists of 4,4',4-[1,3,5-phenyl-tri(methoxy)]-tris-benzene core and 2,2':6',2″-terpyridyl termini, with different metal ions toward the formation of CPGs that show controllable nanomorphologies, tunable emission, and stimuli-responsive behaviors. L can also act as a selective chemosensor for Zn(II) with very low limit of detection (0...
August 9, 2017: Inorganic Chemistry
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