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https://www.readbyqxmd.com/read/28731659/neonatal-intensive-care-unit-lighting-update-and-recommendations
#1
Roberto G Rodríguez, Andrea E Pattini
Achieving adequate lighting in neonatal intensive care units is a major challenge: in addition to the usual considerations of visual performance, cost, energy and aesthetics, there appear different biological needs of patients, health care providers and family members. Communicational aspects of light, its role as a facilitator of the visual function of doctors and nurses, and its effects on the newborn infant physiology and development were addressed in order to review the effects of light (natural and artificial) within neonatal care with a focus on development...
August 1, 2017: Archivos Argentinos de Pediatría
https://www.readbyqxmd.com/read/28728034/construction-of-novel-wo3-snnb2o6-hybrid-nanosheet-heterojunctions-as-efficient-z-scheme-photocatalysts-for-pollutant-degradation
#2
Xiaodong Ma, Wanxia Ma, Deli Jiang, Di Li, Suci Meng, Min Chen
The artificially Z-scheme heterojunctions between WO3 nanosheet and SnNb2O6 nanosheet with strongly coupled heterointerfaces were successfully constructed via a simple hydrothermal coassembly method. Transmission electron microscopy (TEM) and high-resolution TEM proved that an intimate contact interface was formed. The synthesized heterojunctions exhibites enhanced photodegradation efficiency for Rhodamine B under irradiation of visible light, and the highest reaction rate over 30%-WO3/SnNb2O6 nanosheet heterojunctions is about 4...
July 5, 2017: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/28726698/experimental-study-and-artificial-neural-network-modeling-of-tartrazine-removal-by-photocatalytic-process-under-solar-light
#3
Aicha Sebti, Fatiha Souahi, Faroudja Mohellebi, Sadek Igoud
This research focuses on the application of an artificial neural network (ANN) to predict the removal efficiency of tartrazine from simulated wastewater using a photocatalytic process under solar illumination. A program is developed in Matlab software to optimize the neural network architecture and select the suitable combination of training algorithm, activation function and hidden neurons number. The experimental results of a batch reactor operated under different conditions of pH, TiO2 concentration, initial organic pollutant concentration and solar radiation intensity are used to train, validate and test the networks...
July 2017: Water Science and Technology: a Journal of the International Association on Water Pollution Research
https://www.readbyqxmd.com/read/28724246/health-consequences-of-electric-lighting-practices-in-the-modern-world-a-report-on-the-national-toxicology-program-s-workshop-on-shift-work-at-night-artificial-light-at-night-and-circadian-disruption
#4
REVIEW
Ruth M Lunn, David E Blask, Andrew N Coogan, Mariana G Figueiro, Michael R Gorman, Janet E Hall, Johnni Hansen, Randy J Nelson, Satchidananda Panda, Michael H Smolensky, Richard G Stevens, Fred W Turek, Roel Vermeulen, Tania Carreón, Claire C Caruso, Christina C Lawson, Kristina A Thayer, Michael J Twery, Andrew D Ewens, Sanford C Garner, Pamela J Schwingl, Windy A Boyd
The invention of electric light has facilitated a society in which people work, sleep, eat, and play at all hours of the 24-hour day. Although electric light clearly has benefited humankind, exposures to electric light, especially light at night (LAN), may disrupt sleep and biological processes controlled by endogenous circadian clocks, potentially resulting in adverse health outcomes. Many of the studies evaluating adverse health effects have been conducted among night- and rotating-shift workers, because this scenario gives rise to significant exposure to LAN...
July 15, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28721487/influence-of-light-intensity-and-spectral-composition-of-artificial-light-at-night-on-melatonin-rhythm-and-mrna-expression-of-gonadotropins-in-roach-rutilus-rutilus
#5
Anika Brüning, Franz Hölker, Steffen Franke, Wibke Kleiner, Werner Kloas
In this study we investigated the influence of artificial light at night (ALAN) of different intensities (0, 1, 10, 100 lx) and different colours (blue, green, red) on the daily melatonin rhythm and mRNA expression of gonadotropins in roach Rutilus rutilus, a ubiquitous cyprinid, which occur in standing and moderately flowing freshwater habitats of central Europe. Melatonin concentrations were significantly lowered under nocturnal white light already at 1 lx. Low intensity blue, green and red ALAN lowered the melatonin levels significantly in comparison to a dark control...
July 18, 2017: Fish Physiology and Biochemistry
https://www.readbyqxmd.com/read/28721187/individual-and-interactive-effects-of-white-tailed-deer-and-an-exotic-shrub-on-artificial-and-natural-regeneration-in-mixed-hardwood-forests
#6
Charlotte F Owings, Douglass F Jacobs, Joshua M Shields, Michael R Saunders, Michael A Jenkins
Underplanting tree seedlings in areas where natural regeneration is limited may offer a tool by which desired overstory composition can be maintained or restored in forests. However, invasive plant species and ungulate browsing may limit the effectiveness of underplanting, and in-turn, the successful restoration of forest ecosystems. Individually, the invasive shrub Lonicera maackii and browsing by white-tailed deer (Odocoileus virginianus) have been found to negatively affect the regeneration of native tree species in the Midwestern United States, but few studies have examined their interactive or cumulative effects...
July 2017: AoB Plants
https://www.readbyqxmd.com/read/28720333/bioactivity-and-properties-of-a-dental-adhesive-functionalized-with-polyhedral-oligomeric-silsesquioxanes-poss-and-bioactive-glass
#7
Marta Rizk, Lisa Hohlfeld, Loan Tao Thanh, Ralf Biehl, Nicole Lühmann, Dirk Mohn, Annette Wiegand
OBJECTIVES: This study aimed to analyze the effect of infiltrating a commercial adhesive with nanosized bioactive glass (BG-Bi) particles or methacryl-functionalized polyhedral oligomeric silsesquioxanes (POSS) on material properties and bioactivity. METHODS: An acetone-based dental adhesive (Solobond Plus adhesive, VOCO GmbH, Cuxhaven, Germany) was infiltrated with nanosized bioactive glass particles (0.1 or 1wt%), or with monofunctional or multifunctional POSS particles (10 or 20wt%)...
July 15, 2017: Dental Materials: Official Publication of the Academy of Dental Materials
https://www.readbyqxmd.com/read/28719961/artyfechinostomum-malayanum-metacercariae-encysted-in-pila-sp-snails-purchased-from-phnom-penh-cambodia
#8
Woon-Mok Sohn, Tai-Soon Yong, Keeseon S Eom, Muth Sinuon, Hoo-Gn Jeoung, Jong-Yil Chai
The metacercariae of Artyfechinostomum malayanum (Leiper, 1911) Mendheim, 1943 were discovered in Pila sp. snails purchased from a market in Phnom Penh, Cambodia. They were isolated from the snails using the artificial digestion technique and were orally fed to 2 hamsters, 1 rat, and 2 mice to obtain the adult flukes. The metacercariae were round, 145-165 μm in diameter, having a cyst wall of 6-10 μm in thickness, a head collar and collar spines, and characteristic features of excretory granules. Adult flukes were recovered in the small intestines of the animals at days 14 and 32 post infection and were morphologically observed using a light microscope and a scanning electron microscope...
June 2017: Korean Journal of Parasitology
https://www.readbyqxmd.com/read/28719108/isothermal-chirality-switching-with-non-polarized-light
#9
Mohamed Alaasar, Silvio Poppe, Qingshu Dong, Feng Liu, Carsten Tschierske
Spontaneous mirror symmetry breaking is a fundamental process for development of chirality in natural and in artificial self-assembled systems. Here we report a new series of triple chain azobenzene based rod-like compounds, which for the first time show mirror symmetry breaking in an isotropic liquid occurring adjacent to a lamellar LC phase. The transition between the lamellar phase and the symmetry broken liquid is affected by trans-cis photoisomerization which allows a fast and reversible photoinduced switching between chiral and achiral states with non-polarized light...
July 18, 2017: Angewandte Chemie
https://www.readbyqxmd.com/read/28718467/how-to-make-an-efficient-and-robust-molecular-catalyst-for-water-oxidation
#10
Pablo Garrido-Barros, Carolina Gimbert-Suriñach, Roc Matheu, Xavier Sala, Antoni Llobet
Energy has been a central subject for human development from Homo erectus to date. The massive use of fossil fuels during the last 50 years has generated a large CO2 concentration in the atmosphere that has led to the so-called global warming. It is very urgent to come up with C-neutral energy schemes to be able to preserve Planet Earth for future generations to come and still preserve our modern societies' life style. One of the potential solutions is water splitting with sunlight (hν-WS) that is also associated with "artificial photosynthesis", since its working mode consists of light capture followed by water oxidation and proton reduction processes...
July 18, 2017: Chemical Society Reviews
https://www.readbyqxmd.com/read/28717632/effect-of-different-intracoronal-bleaching-methods-on-shear-bond-strength-of-ceramic-brackets-bonded-to-bleached-enamel-an-in-vitro-study
#11
Vikas Chauhan, Piush Kumar, Payal Sharma, Divya Shetty
OBJECTIVE: To investigate the effect of different intracoronal bleaching methods on the shear bond strength and site of failure of ceramic brackets. MATERIALS AND METHODS: Sixty freshly extracted human maxillary incisors were randomly divided into four groups (n = 15). Endodontic access cavity was prepared and root canals were filled, root fillings were removed 2mm apical to the cementoenamel junction, and a 2-mmthick layer of glass ionomer cement base was applied...
July 2017: Journal of Orthodontic Science
https://www.readbyqxmd.com/read/28717583/in-vivo-photothermal-treatment-with-real-time-monitoring-by-optical-fiber-needle-array
#12
Taeseok Daniel Yang, Kwanjun Park, Hyung-Jin Kim, Nu-Ri Im, Byoungjae Kim, TaeHoon Kim, Sohyun Seo, Jae-Seung Lee, Beop-Min Kim, Youngwoon Choi, Seung-Kuk Baek
Photothermal treatment (PTT) using gold nanoshells (gold-NSs) is accepted as a method for treating cancer. However, owing to restrictions in therapeutic depth and skin damage caused by excessive light exposure, its application has been limited to lesions close to the epidermis. Here, we demonstrate an in vivo PTT method that uses gold-NSs with a flexible optical fiber-needle array (OFNA), which is an array of multiple needles in which multimode optical fibers are inserted, one in each, for light delivery. The light for PTT was directly administrated to subcutaneous tissues through the OFNA, causing negligible thermal damage to the skin...
July 1, 2017: Biomedical Optics Express
https://www.readbyqxmd.com/read/28714663/harnessing-hot-electrons-from-near-ir-light-for-hydrogen-production-using-pt-end-capped-aunrs
#13
Nathalia Ortiz, Brandon Zoellner, Soung Joung Hong, Yue Ji, Tao Wang, Yang Liu, Paul A Maggard, Gufeng Wang
Gold nanorods show great potential in harvesting natural sun light and generating hot charge carriers that can be employed to produce electrical or chemical energies. We show that photochemical reduction of Pt(IV) to Pt metal mainly takes place at the ends of gold nanorods (AuNRs), suggesting photon-induced hot electrons are localized in a time-averaged manner at AuNR ends. To use these hot electrons efficiently, a novel synthetic method to selectively overgrow Pt at the ends of AuNRs has been developed. These Pt-end-capped AuNRs show relatively high activity for the production of hydrogen gas using artificial white light, natural sun light, and more importantly, near IR light at 976 nm...
July 17, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28714231/a-highly-versatile-and-adaptable-artificial-leaf-with-floatability-and-planar-compact-design-applicable-in-various-natural-environments
#14
Sangkuk Kim, Taewan Kim, Seunghyup Lee, Seunghyeon Baek, Taiho Park, Kijung Yong
As a promising means of solar energy conversion, photovoltaic (PV) cell-based electrolysis has recently drawn considerable attention for its effective solar fuel generation; especially the generation of hydrogen by solar water splitting. Inspired by remarkable accomplishments in enhancing the solar-to-hydrogen conversion efficiency, various efforts have aimed at fostering convenient and practical uses of PV electrolysis to make this technology ubiquitous, manageable, and efficient. Here, the design and function of a monolithic photoelectrolysis system-a so-called artificial leaf-for use in various environments are highlighted...
July 17, 2017: Advanced Materials
https://www.readbyqxmd.com/read/28712297/photocatalytic-conversion-of-nitrogen-to-ammonia-with-water-on-surface-oxygen-vacancies-of-titanium-dioxide
#15
Hiroaki Hirakawa, Masaki Hashimoto, Yasuhiro Shiraishi, Takayuki Hirai
Ammonia (NH3) is an essential chemical in modern society. It is currently manufactured by the Haber-Bosch process using H2 and N2 under extremely high pressure (>200 bar) and high temperature (>673 K) conditions. Photocatalytic NH3 production from water and N2 at atmospheric pressure and room temperature is ideal. Several semiconductor photocatalysts have been proposed, but all suffer from low efficiency. Here we report that a commercially-available TiO2 with a large number of surface oxygen vacancies, when photoirradiated by UV light in pure water with N2, successfully produces NH3...
July 17, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/28711262/genetic-and-nongenetic-factors-associated-with-milk-color-in-dairy-cows
#16
S Scarso, S McParland, G Visentin, D P Berry, A McDermott, M De Marchi
Milk color is one of the sensory properties that can influence consumer choice of one product over another and it influences the quality of processed dairy products. This study aims to quantify the cow-level genetic and nongenetic factors associated with bovine milk color traits. A total of 136,807 spectra from Irish commercial and research herds (with multiple breeds and crosses) were used. Milk lightness ( Lˆ*) red-green index ( aˆ*) and yellow-blue index ( bˆ*) were predicted for individual milk samples using only the mid-infrared spectrum of the milk sample...
July 12, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28710859/carbonitride-aerogels-for-the-photoredox-conversion-of-water
#17
Honghui Ou, Pengju Yang, Lihua Lin, Masakazu Anpo, Xinchen Wang
Aerogel structures have attracted increasing research interest in energy storage and conversion owing to their unique structural features, and a variety of matters has been engineered into aerogels, including carbons, metal oxides, linear polymers and even metal chalcogenides. However, manufacturing of aerogels from nitride-based materials, particularly the emerging light-weight carbonitride (CN) is rarely reported. Here, we develop a facile method based on self-assembly chemistry to produce self-supported CN aerogels, without using any cross-linking agents...
July 15, 2017: Angewandte Chemie
https://www.readbyqxmd.com/read/28708527/artificially-extended-photoperiod-administered-to-pre-partum-mares-via-blue-light-to-a-single-eye-observations-on-gestation-length-foal-birth-weight-and-foal-hair-coat-at-birth
#18
Margaret B Nolan, Caroline M Walsh, Noelle Duff, Conor McCrarren, Ralph L Prendergast, Barbara A Murphy
In seasonally breeding animals, photoperiod perception is crucial for timing of important physiological events. In the horse, long day photoperiod influences the onset of ovulation and cyclicity, shedding of the heavier winter coat and the timing of parturition. In this compilation of studies, conducted across three breeding seasons and two countries, the impact of artificially extended day length was investigated on gestation length, foal birth weight and foal hair coat at birth. The light therapy was administered to pre-partum mares via mobile head worn masks which provided short wavelength blue light to a single eye...
June 9, 2017: Theriogenology
https://www.readbyqxmd.com/read/28708080/phenoliner-a-new-field-phenotyping-platform-for-grapevine-research
#19
Anna Kicherer, Katja Herzog, Nele Bendel, Hans-Christian Klück, Andreas Backhaus, Markus Wieland, Johann Christian Rose, Lasse Klingbeil, Thomas Läbe, Christian Hohl, Willi Petry, Heiner Kuhlmann, Udo Seiffert, Reinhard Töpfer
In grapevine research the acquisition of phenotypic data is largely restricted to the field due to its perennial nature and size. The methodologies used to assess morphological traits and phenology are mainly limited to visual scoring. Some measurements for biotic and abiotic stress, as well as for quality assessments, are done by invasive measures. The new evolving sensor technologies provide the opportunity to perform non-destructive evaluations of phenotypic traits using different field phenotyping platforms...
July 14, 2017: Sensors
https://www.readbyqxmd.com/read/28707211/high-accuracy-drilling-with-an-image-guided-light-weight-robot-autonomous-versus-intuitive-feed-control
#20
Sebastian Tauscher, Alexander Fuchs, Fabian Baier, Lüder A Kahrs, Tobias Ortmaier
PURPOSE: Assistance of robotic systems in the operating room promises higher accuracy and, hence, demanding surgical interventions become realisable (e.g. the direct cochlear access). Additionally, an intuitive user interface is crucial for the use of robots in surgery. Torque sensors in the joints can be employed for intuitive interaction concepts. Regarding the accuracy, they lead to a lower structural stiffness and, thus, to an additional error source. The aim of this contribution is to examine, if an accuracy needed for demanding interventions can be achieved by such a system or not...
July 13, 2017: International Journal of Computer Assisted Radiology and Surgery
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