keyword
MENU ▼
Read by QxMD icon Read
search

Wood light

keyword
https://www.readbyqxmd.com/read/28719095/a-new-perspective-on-transparent-wood-lignin-retaining-transparent-wood
#1
Yuanyuan Li, Qiliang Fu, Ramiro Rojas, Min Yan, Martin Lawoko, Lars Berglund
Optically transparent wood, combining optical and mechanical performance, is an emerging new material for light transmitting structures in buildings with the aim of reducing energy consumption. One of the main obstacles for transparent wood fabrication is delignification, where around 30 wt% of wood tissue is removed to reduce light absorption and refractive index mismatch. This step is time consuming and not environmentally benign. Meanwhile, lignin removal weakens the wood structure, limiting the fabrication of large structure...
July 18, 2017: ChemSusChem
https://www.readbyqxmd.com/read/28717880/environmental-exposure-does-not-explain-putative-maladaptation-in-road-adjacent-populations
#2
Steven P Brady
While the ecological consequences of roads are well described, little is known of their role as agents of natural selection, which can shape adaptive and maladaptive responses in populations influenced by roads. This knowledge gap persists despite a growing appreciation for the influence of evolution in human-altered environments. There, insights indicate that natural selection typically results in local adaptation. Thus, populations influenced by road-induced selection should evolve fitness advantages in their local environment...
July 17, 2017: Oecologia
https://www.readbyqxmd.com/read/28707896/smart-floor-with-integrated-triboelectric-nanogenerator-as-energy-harvester-and-motion-sensor
#3
Chuan He, Weijun Zhu, Baodong Chen, Liang Xu, Tao Jiang, Chang Bao Han, Guang Qin Gu, Dichen Li, Zhong Lin Wang
A smart floor is demonstrated by integrating a square-frame triboelectric nanogenerator (SF-TENG) into a standard wood floor. The smart floor has two working modes based on two pairs of triboelectric materials: one is purposely chosen polytetrafluoroethylene (PTFE) films and aluminum (Al) balls, the other is the floor itself and the objects that can be triboelectrically charged, such as basketball, shoe soles, and scotch tape, etc. Utilizing the Al balls enclosed inside shallow boxes, the smart floor is capable of harvesting vibrational energy, hence provides a non-intrusive way to detect the sudden fall of the elderly...
July 14, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28705932/use-of-a-neutralizing-antibody-helps-identify-structural-features-critical-for-binding-of-clostridium-difficile-toxin-tcda-to-the-host-cell-surface
#4
Heather K Kroh, Ramyavardhanee Chandrasekaran, Kim Rosenthal, Rob Woods, Xiaofang Jin, Melanie D Ohi, Andrew C Nyborg, G Jonah Rainey, Paul Warrener, Benjamin W Spiller, D Borden Lacy
Clostridium difficile is a clinically significant pathogen that causes mild-to-severe (and often recurrent) colon infections. Disease symptoms stem from the activities of two large, multi-domain toxins known as TcdA and TcdB. The toxins can bind, enter, and perturb host cell function through a multi-step mechanism of receptor binding, endocytosis, pore formation, autoproteolysis, and glucosyltransferase-mediated modification of host substrates. Monoclonal antibodies that neutralize toxin activity provide a survival benefit in preclinical animal models and prevent recurrent infections in human clinical trials...
July 13, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28676069/limited-cutaneous-systemic-sclerosis-skin-demonstrates-distinct-molecular-subsets-separated-by-a-cardiovascular-development-gene-expression-signature
#5
Emma C Derrett-Smith, Viktor Martyanov, Cecilia B Chighizola, Pia Moinzadeh, Corrado Campochiaro, Korsa Khan, Tammara A Wood, Pier Luigi Meroni, David J Abraham, Voon H Ong, Robert Lafyatis, Michael L Whitfield, Christopher P Denton
BACKGROUND: Systemic sclerosis (SSc; scleroderma) is an uncommon autoimmune rheumatic disease characterised by autoimmunity, vasculopathy and fibrosis. Gene expression profiling distinguishes scleroderma from normal skin, and can detect different subsets of disease, with potential to identify prognostic biomarkers of organ involvement or response to therapy. We have performed gene expression profiling in skin samples from patients with limited cutaneous SSc (lcSSc). METHODS: Total RNA was extracted from clinically uninvolved skin biopsies of 15 patients with lcSSc and 8 healthy controls (HC)...
July 4, 2017: Arthritis Research & Therapy
https://www.readbyqxmd.com/read/28667823/bordered-pits-in-xylem-of-vesselless-angiosperms-and-their-possible-misinterpretation-as-perforation-plates
#6
Ya Zhang, Matthias Klepsch, Steven Jansen
Vesselless wood represents a rare phenomenon within the angiosperms, characterizing Amborellaceae, Trochodendraceae, and Winteraceae. Anatomical observations of bordered pits and their pit membranes based on light, scanning and transmission electron microscopy (SEM, TEM) are required to understand functional questions surrounding vesselless angiosperms and the potential occurrence of cryptic vessels. Interconduit pit membranes in 11 vesselless species showed a similar ultrastructure as mesophytic vessel-bearing angiosperms, with a mean thickness of 245 nm (± 53, SD; n = 6 species)...
July 1, 2017: Plant, Cell & Environment
https://www.readbyqxmd.com/read/28662292/benign-and-malignant-tumors-in-the-uk-myotonic-dystrophy-patient-registry
#7
Rotana Alsaggaf, Youjin Wang, Chiara Marini-Bettolo, Libby Wood, Nikoletta Nikolenko, Hanns Lochmüller, Mark H Greene, Shahinaz M Gadalla
INTRODUCTION: In light of recent evidence that cancer is part of the myotonic dystrophy (DM) phenotype, we assessed the prevalence of benign and malignant tumors among 220 patients enrolled in the UK Myotonic Dystrophy Patient Registry, and evaluated factors associated with their development. METHODS: A survey was distributed to collect tumor history and lifestyle information. We used multinomial logistic regression for the analysis. RESULTS: Thirty-nine benign (30 patients), and 16 malignant (15 patients) tumors were reported...
June 29, 2017: Muscle & Nerve
https://www.readbyqxmd.com/read/28654160/pontamine-fast-scarlet-4b-bifluorescence-and-measurements-of-cellulose-microfibril-angles
#8
J Thomas, N A Idris, D A Collings
Pontamine fast scarlet 4B is a red paper and textiles dye that has recently been introduced as a fluorescent probe for plant cell walls. Pontamine exhibits bifluorescence, or fluorescence dependent on the polarization of the excitation light: Because cellulose is aligned within the cell wall, pontamine-labelled cell walls exhibit variable fluorescence as the excitation polarization is modulated. Thus, bifluorescence measurements require polarized excitation that can be directly or indirectly modulated. In our confocal microscopy observations of various cellulose samples labelled with pontamine, we modulated excitation polarization either through sample rotation or by the confocal's scanfield rotation function...
June 27, 2017: Journal of Microscopy
https://www.readbyqxmd.com/read/28652857/fiber-optic-force-sensors-for-mri-guided-interventions-and-rehabilitation-a-review
#9
Hao Su, Iulian I Iordachita, Junichi Tokuda, Nobuhiko Hata, Xuan Liu, Reza Seifabadi, Sheng Xu, Bradford Wood, Gregory S Fischer
Magnetic Resonance Imaging (MRI) provides both anatomical imaging with excellent soft tissue contrast and functional MRI imaging (fMRI) of physiological parameters. The last two decades have witnessed the manifestation of increased interest in MRI-guided minimally invasive intervention procedures and fMRI for rehabilitation and neuroscience research. Accompanying the aspiration to utilize MRI to provide imaging feedback during interventions and brain activity for neuroscience study, there is an accumulated effort to utilize force sensors compatible with the MRI environment to meet the growing demand of these procedures, with the goal of enhanced interventional safety and accuracy, improved efficacy and rehabilitation outcome...
April 1, 2017: IEEE Sensors Journal
https://www.readbyqxmd.com/read/28645783/maerua-angolensis-stem-bark-extract-reverses-anxiety-and-related-behaviours-in-zebrafish-involvement-of-gabaergic-and-5-ht-systems
#10
Charles Kwaku Benneh, Robert Peter Biney, Priscilla Kolibea Mante, Augustine Tandoh, Donatus Wewura Adongo, Eric Woode
ETHNOPHARMACOLOGICAL RELEVANCE: Maerua angolensis DC (Capparaceae) has been employed in the management of several central nervous system (CNS) disorders including anxiety. This study evaluated the anxiolytic effects of the petroleum ether/ethyl acetate fraction stem bark extract and its possible mechanism(s) using zebrafish anxiety models. METHODS: Adult zebrafish, tested in the novel tank and light dark tests, have shown by previous authors to be sensitive to the anxiolytic effects of known anxiolytic drugs...
June 20, 2017: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/28640603/changes-in-light-absorptivity-of-molecular-weight-separated-brown-carbon-due-to-photolytic-aging
#11
Jenny P S Wong, Athanasios Nenes, Rodney J Weber
Brown carbon (BrC) consists of those organic compounds in atmospheric aerosols that absorb solar radiation and may play an important role in planetary radiative forcing and climate. However, little is known about the production and loss mechanisms of BrC in the atmosphere. Here, we study how the light absorptivity of BrC from wood smoke and secondary BrC generated from the reaction of ammonium sulfate with methylglyoxal changes under photolytic aging by UVA radiation in the aqueous phase. Owing to its chemical complexity, BrC is separated by molecular weight using size exclusion chromatography, and the response of each molecular weight fraction to aging is studied...
July 14, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28638425/the-effect-of-wood-aerosols-and-bioaerosols-on-the-respiratory-systems-of-wood-manufacturing-industry-workers-in-golestan-province
#12
Phateme Badirdast, Mansour Rezazadeh Azari, Soussan Salehpour, Ali Ghadjari, Soheila Khodakarim, Davod Panahi, Moslem Fadaei, Abolfazl Rahimi
BACKGROUND: Occupational exposure to dust leads to acute and chronic respiratory diseases, occupational asthma, and depressed lung function. In the light of a lack of comprehensive studies on the exposure of Iranian workers to wood dusts, the objective of this study was to monitor the occupational exposure to wood dust and bioaerosol, and their correlation with the lung function parameters in chipboard manufacturing industry workers. MATERIALS AND METHODS: A cross-sectional study was conducted on chipboard workers in Golestan Province; a total of 150 men (100 exposed cases and 50 controls) were assessed...
2017: Tanaffos
https://www.readbyqxmd.com/read/28622962/synergistic-structures-from-magnetic-freeze-casting-with-surface-magnetized-alumina-particles-and-platelets
#13
Michael B Frank, Sze Hei Siu, Keyur Karandikar, Chin-Hung Liu, Steven E Naleway, Michael M Porter, Olivia A Graeve, Joanna McKittrick
Magnetic freeze casting utilizes the freezing of water, a low magnetic field and surface magnetized materials to make multi-axis strengthened porous scaffolds. A much greater magnetic moment was measured for larger magnetized alumina platelets compared with smaller particles, which indicated that more platelet aggregation occurred within slurries. This led to more lamellar wall alignment along the magnetic field direction during magnetic freeze casting at 75 mT. Slurries with varying ratios of magnetized particles to platelets (0:1, 1:3, 1:1, 3:1, 7:1, 1:0) produced porous scaffolds with different structural features and degrees of lamellar wall alignment...
June 3, 2017: Journal of the Mechanical Behavior of Biomedical Materials
https://www.readbyqxmd.com/read/28605077/highly-flexible-and-efficient-solar-steam-generation-device
#14
Chaoji Chen, Yiju Li, Jianwei Song, Zhi Yang, Yudi Kuang, Emily Hitz, Chao Jia, Amy Gong, Feng Jiang, J Y Zhu, Bao Yang, Jia Xie, Liangbing Hu
Solar steam generation with subsequent steam recondensation has been regarded as one of the most promising techniques to utilize the abundant solar energy and sea water or other unpurified water through water purification, desalination, and distillation. Although tremendous efforts have been dedicated to developing high-efficiency solar steam generation devices, challenges remain in terms of the relatively low efficiency, complicated fabrications, high cost, and inability to scale up. Here, inspired by the water transpiration behavior of trees, the use of carbon nanotube (CNT)-modified flexible wood membrane (F-Wood/CNTs) is demonstrated as a flexible, portable, recyclable, and efficient solar steam generation device for low-cost and scalable solar steam generation applications...
June 12, 2017: Advanced Materials
https://www.readbyqxmd.com/read/28605018/contrasting-drivers-of-reproductive-ageing-in-albatrosses
#15
Hannah Froy, Sue Lewis, Daniel H Nussey, Andrew G Wood, Richard A Phillips
1.Age-related variation in reproductive performance is ubiquitous in wild vertebrate populations and has important consequences for population and evolutionary dynamics. 2.The ageing trajectory is shaped by both within-individual processes, such as improvement and senescence, and by the among-individual effects of selective appearance and disappearance. To date, few studies have compared the role of these different drivers among species or populations. 3.In this study, we use nearly 40 years of longitudinal monitoring data to contrast the within- and among-individual processes contributing to the reproductive ageing patterns in three albatross species (two biennial and one annual breeder), and test whether these can be explained by differences in life-histories...
June 12, 2017: Journal of Animal Ecology
https://www.readbyqxmd.com/read/28584876/on-the-nature-of-directed-behavior-to-drug-associated-light-cues-in-rhesus-monkeys-macaca-mulatta
#16
Mark P Reilly, Sonja I Berndt, James H Woods
The present study investigated the role of drug-paired stimuli in controlling the behavior of rhesus monkeys. Systematic observations were made with nine monkeys who had a history of drug self-administration; they had been lever pressing to produce intravenous infusions of various drugs. These observations revealed that the stimulus light co-occurring with drug infusion produced robust and cue-directed behavior such as orienting, touching and biting. Experiment 1 showed that this light-directed behavior would occur in naïve monkeys exposed to a Pavlovian pairing procedure...
November 2016: Behavior Analysis (Washington, D.C.)
https://www.readbyqxmd.com/read/28578413/dna-methylation-in-schizophrenia-in-different-patient-derived-cell-types
#17
Alejandra M Vitale, Nicholas A Matigian, Alexandre S Cristino, Katia Nones, Sugandha Ravishankar, Bernadette Bellette, Yongjun Fan, Stephen A Wood, Ernst Wolvetang, Alan Mackay-Sim
DNA methylation of gene promoter regions represses transcription and is a mechanism via which environmental risk factors could affect cells during development in individuals at risk for schizophrenia. We investigated DNA methylation in patient-derived cells that might shed light on early development in schizophrenia. Induced pluripotent stem cells may reflect a "ground state" upon which developmental and environmental influences would be minimal. Olfactory neurosphere-derived cells are an adult-derived neuro-ectodermal stem cell modified by developmental and environmental influences...
January 23, 2017: NPJ Schizophrenia
https://www.readbyqxmd.com/read/28560252/dna-methylation-in-schizophrenia-in-different-patient-derived-cell-types
#18
Alejandra M Vitale, Nicholas A Matigian, Alexandre S Cristino, Katia Nones, Sugandha Ravishankar, Bernadette Bellette, Yongjun Fan, Stephen A Wood, Ernst Wolvetang, Alan Mackay-Sim
DNA methylation of gene promoter regions represses transcription and is a mechanism via which environmental risk factors could affect cells during development in individuals at risk for schizophrenia. We investigated DNA methylation in patient-derived cells that might shed light on early development in schizophrenia. Induced pluripotent stem cells may reflect a "ground state" upon which developmental and environmental influences would be minimal. Olfactory neurosphere-derived cells are an adult-derived neuro-ectodermal stem cell modified by developmental and environmental influences...
2017: NPJ Schizophrenia
https://www.readbyqxmd.com/read/28550949/freshwater-lenses-as-ecological-and-population-sustenance-case-study-in-the-coastal-wetland-of-samboromb%C3%A3-n-bay-argentina
#19
Carolina Tanjal, Eleonora Carol, Sebastián Richiano, Lucía Santucci
Freshwater lenses associated to shell ridges and sand sheets exist on the coastal wetland of Samborombón Bay. As they constitute one of the most vulnerable aquifer systems, it is the aim of this study to determine the hydrogeochemical processes that condition the chemical quality of its groundwater and to assess their present and future capability as sustenance of native woods and local villagers. To achieve this, hydrogeomorphological field surveys were made and groundwater samples were taken. Results show that lenses have a mean thickness of 12m and its chemical quality depends on the dissolution of CO2(g) and carbonates, weathering of silicates and ion exchange...
May 24, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/28542660/-trichomycosis-trichobacteriosis-capitis-in-an-infant-microbiological-dermoscopic-and-ultrastructural-features
#20
Alexandro Bonifaz, Ixchel Ramírez-Ricarte, Alejandra Rodríguez-Leviz, Marco A Hernández, Carlos Mena, Adriana Valencia
Trichomycosis is a superficial infection caused by Corynebacterium flavescens, which regularly affects axillary, and to a a lesser extent, pubic, scrotal and intergluteal, and exceptionally, head hairs or trichomycosis capitis (TC). This condition is characterised by the formation of bacterial nodules. Clinically, it can be confused with white piedra or pediculosis. The diagnosis is made by microscopic and dermoscopic observation and confirmed by culture. OBJECTIVE: To present a case of TC in an infant and illustrate the microscopic, dermoscopic, and ultrastructural characteristics...
April 2017: Revista Chilena de Pediatría
keyword
keyword
77445
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"