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https://www.readbyqxmd.com/read/28350909/vitamin-d-calcium-and-cancer-approaching-daylight
#1
JoAnn E Manson, Shari S Bassuk, Julie E Buring
No abstract text is available yet for this article.
March 28, 2017: JAMA: the Journal of the American Medical Association
https://www.readbyqxmd.com/read/28335092/effect-of-energy-density-and-virginiamycin-supplementation-in-diets-on-growth-performance-and-digestive-function-of-finishing-steers
#2
Juan Diego Navarrete, Martin F Montano, Constantino Raymundo, Jaime Salinas-Chavira, Noemi Torrentera, Richard Avery Zinn
Objective: In the study was determined the influence of virginiamycin supplementation on growth-performance and characteristics of digestion of cattle, decreasing dietary NEm from 2.22 to 2.10 Mcal/kg. Methods: Eighty crossbred beef steers (298.2 ± 6.3 kg) were used in a 152-d performance evaluation consisting of a 28-d adaptation period followed by a 124-d growing-finishing period. During the 124-d period steers were fed either a lesser energy dense (LED, 2.10 Mcal/kg NEm) or higher energy dense (HED, 2...
March 21, 2017: Asian-Australasian Journal of Animal Sciences
https://www.readbyqxmd.com/read/28324012/deletion-of-the-thyroid-hormone-activating-type-2-deiodinase-rescues-cone-photoreceptor-degeneration-but-not-deafness-in-mice-lacking-type-3-deiodinase
#3
Lily Ng, Hong Liu, Donald L St Germain, Arturo Hernandez, Douglas Forrest
Type 2 deiodinase amplifies and type 3 deiodinase depletes levels of the active form of thyroid hormone, triiodothyronine (T3). Given the opposing activities of these enzymes, we tested the hypothesis that they counteract each other's developmental functions by investigating whether deletion of type 2 deiodinase (encoded by Dio2) modifies sensory phenotypes in type 3 deiodinase-deficient (Dio3-/-) mice. Dio3-/- mice display degeneration of retinal cones, the photoreceptors that mediate daylight and color vision...
March 7, 2017: Endocrinology
https://www.readbyqxmd.com/read/28284444/investigating-tnt-loss-between-sample-collection-and-analysis
#4
Niamh Nic Daeid, Holly A Yu, Matthew S Beardah
Explosives residues are often collected from explosion scenes, and from surfaces suspected of being in contact with explosives, by swabbing with solvent-wetted cotton swabs. It is vital that any explosives traces present on the swabs are successfully extracted and detected when received in a laboratory. However, a 2007 proficiency test initiated by the European Network of Forensic Science Institutes (ENFSI) Expert Working Group on Explosives involving TNT-spiked cotton swabs highlighted that explosives may not always be detected from such samples...
March 2017: Science & Justice: Journal of the Forensic Science Society
https://www.readbyqxmd.com/read/28278470/a-context-aware-method-for-authentically-simulating-outdoors-shadows-for-mobile-augmented-reality
#5
Joao Barreira, Maximino Bessa, Luis Barbosa, Luis Magalhaes
Visual coherence between virtual and real objects is a major issue in creating convincing augmented reality (AR) applications. To achieve this seamless integration, actual light conditions must be determined in real time to ensure that virtual objects are correctly illuminated and cast consistent shadows. In this paper, we propose a novel method to estimate daylight illumination and use this information in outdoor AR applications to render virtual objects with coherent shadows. The illumination parameters are acquired in real time from context-aware live sensor data...
March 1, 2017: IEEE Transactions on Visualization and Computer Graphics
https://www.readbyqxmd.com/read/28276203/in-situ-electrochemical-enrichment-and-isolation-of-a-magnetite-reducing-bacterium-from-a-high-ph-serpentinizing-spring
#6
Annette R Rowe, Miho Yoshimura, Doug E LaRowe, Lina J Bird, Jan P Amend, Kazuhito Hashimoto, Kenneth H Nealson, Akihiro Okamoto
Serpentinization is a geologic process that produces highly reduced, hydrogen-rich fluids that support microbial communities under high pH conditions. We investigated the activity of microbes capable of extracellular electron transfer in a terrestrial serpentinizing system known as "The Cedars". Measuring current generation with an on-site two-electrode system, we observed daily oscillations in current with the current maxima and minima occurring during daylight hours. Distinct members of the microbial community were enriched...
March 9, 2017: Environmental Microbiology
https://www.readbyqxmd.com/read/28264828/potential-determinants-of-vitamin-d-in-finnish-adults-a-cross-sectional-study-from-the-northern-finland-birth-cohort-1966
#7
Saranya Palaniswamy, Elina Hyppönen, Dylan M Williams, Jari Jokelainen, Estelle Lowry, Sirkka Keinänen-Kiukaanniemi, Karl-Heinz Herzig, Marjo-Riitta Järvelin, Sylvain Sebert
OBJECTIVE: Evidence from randomised controlled trials suggests that vitamin D may reduce multimorbidity, but very few studies have investigated specific determinants of vitamin D2 and D3 (two isoforms of 25-hydroxyvitamin D). The aim of the study was to investigate the determinants of vitamin D2 and D3 and to identify the risk factors associated with hypovitaminosis D. DESIGN: Cross-sectional study. SETTING: Northern Finland Birth Cohort 1966...
March 6, 2017: BMJ Open
https://www.readbyqxmd.com/read/28245942/clinical-markers-of-vitiligo-activity
#8
Laila Benzekri, Yvon Gauthier
BACKGROUND: Current modalities of understanding disease state (active/stable) are limited when considering treatment of vitiligo. OBJECTIVE: We sought to develop a rapid, accurate, and noninvasive assessment of vitiligo state. METHODS: In daylight and Wood's light examinations, 2 common clinical types of vitiligo were identified as amelanotic with sharply demarcated borders and hypomelanotic with poorly defined borders. Photographs were taken at the time of examination and a skin biopsy at the edge of a vitiligo lesion was performed...
February 25, 2017: Journal of the American Academy of Dermatology
https://www.readbyqxmd.com/read/28242226/biokinetic-model-for-nitrogen-removal-in-free-water-surface-constructed-wetlands
#9
S Gargallo, M Martín, N Oliver, C Hernández-Crespo
In this article, a mechanistic biokinetic model for nitrogen removal in free water surface constructed wetlands treating eutrophic water was developed, including organic matter performance due to its importance in nitrogen removal by denitrification. Ten components and fourteen processes were introduced in order to simulate the forms of nitrogen and organic matter, the mechanisms of autotrophic and heterotrophic microorganisms in both aerobic and anoxic conditions, as well as macrophytes nitrogen uptake and release...
February 24, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28240411/in-situ-electroluminescence-color-tuning-by-thermal-deprotonation-suitable-for-thermal-sensors-and-anti-fraud-labels
#10
Umberto Giovanella, Elena Cariati, Elena Lucenti, Mariacecilia Pasini, Francesco Galeotti, Chiara Botta
A novel and versatile approach to tune photoluminescence and electroluminescence by in situ controlled thermal deprotonation is presented. This methodology, based on a single organic π-conjugated material (pyrene derivative), allows the manufacturing of Organic Light-Emitting Diodes (OLEDs) prototypes by solution methods with controlled tunable emission ranging from the orange (protonated form of the dye) to the blue (pristine or deprotonated form). While several protonation/deprotonation cycles can be performed on thin films, for the devices only one cycle is possible so that their use as anti-fraud labels can be envisaged...
February 27, 2017: Chemphyschem: a European Journal of Chemical Physics and Physical Chemistry
https://www.readbyqxmd.com/read/28231259/impact-of-seasonality-and-air-pollutants-on-carotid-femoral-pulse-wave-velocity-and-wave-reflection-in-hypertensive-patients
#11
Marina Di Pilla, Rosa Maria Bruno, Francesco Stea, Luciano Massetti, Stefano Taddei, Lorenzo Ghiadoni, Pietro Amedeo Modesti
OBJECTIVE: The effects of seasonality on blood pressure (BP) and cardiovascular (CV) events are well established, while the influence of seasonality and other environmental factors on arterial stiffness and wave reflection has never been analyzed. This study evaluated whether seasonality (daily number of hours of light) and acute variations in outdoor temperature and air pollutants may affect carotid-femoral pulse wave velocity (PWV) and pressure augmentation. DESIGN AND METHOD: 731 hypertensive patients (30-88 years, 417 treated) were enrolled in a cross-sectional study during a 5-year period...
2017: PloS One
https://www.readbyqxmd.com/read/28225978/daylight-photodynamic-therapy-experience-and-safety-in-treatment-of-actinic-keratoses-of-the-face-and-scalp-in-low-latitude-and-high-brightness-region
#12
Luiz Eduardo Garcia Galvão, Heitor de Sá Gonçalves, Karine Paschoal Botelho, Juliana Chagas Caldas
Daylight photodynamic therapy has been used in countries with high latitudes during the summer for actinic keratoses treatment with reports of similar efficacy to conventional photodynamic therapy. We evaluate its safety in 20 patients in the city of Fortaleza, a local with low latitude and high brightness. Sixteen patients did not report any discomfort due to the procedure. Daylight photodynamic therapy is an easy application method with great tolerability by the patient and has the possibility of being performed throughout the year in these regions...
January 2017: Anais Brasileiros de Dermatologia
https://www.readbyqxmd.com/read/28222225/daylight-photodynamic-therapy-vs-conventional-photodynamic-therapy-as-skin-cancer-preventive-treatment-in-patients-with-face-and-scalp-cancerization-an-intra-individual-comparison-study
#13
Elena Sotiriou, Demetrios Ioannides, Fotini Vrani, Elizabeth Lazaridou, Efstratios Vakirlis, Aimilios Lallas, Zoe Apalla
BACKGROUND: Individuals with medical history of non-melanoma skin cancers (NMSCs) usually develop multiple and/or recurrent malignant lesions around the site of the primary neoplasm. The latter represents the clinical expression of the "field cancerization" theory; supporting the presence of multiple malignant clones of dysplastic keratinocytes over the entire epithelium that potentially can progress into clinical lesions. Taking into consideration that the burden of NMSCs on public health and health-care cost is high, adequate control of recurrences and management of field change is challenging...
February 21, 2017: Journal of the European Academy of Dermatology and Venereology: JEADV
https://www.readbyqxmd.com/read/28208235/warmer-night-time-temperature-promotes-microbial-heterotrophic-activity-and-modifies-stream-sediment-community
#14
Anna Freixa, Vicenç Acuña, Maria Casellas, Stoyana Pecheva, Anna M Romaní
Diel temperature patterns are changing because of global warming, with higher temperatures being predicted to be more pronounced at night. Biological reactions are temperature dependent, with some occurring only during the daylight hours (e.g., light photosynthesis) and other during the entire day (e.g., respiration). Consequently, we expect the modification of daily temperature cycles to alter microbial biological reactions in stream sediments. Here, we aimed to study the effect of warming and changes of the diel temperature patterns on stream sediment biofilm functions tied to organic carbon decomposition, as well as on biofilm meiofaunal community structure...
February 16, 2017: Global Change Biology
https://www.readbyqxmd.com/read/28206710/sucrose-transporter2-contributes-to-maize-growth-development-and-crop-yield
#15
Kristen A Leach, Thu M Tran, Thomas L Slewinski, Robert B Meeley, David M Braun
During daylight, plants produce excess photosynthates, including sucrose, which is temporarily stored in the vacuole. At night, plants remobilize sucrose to sustain metabolism and growth. Based on homology to other sucrose transporter (SUT) proteins, we hypothesized the maize (Zea mays) SUCROSE TRANSPORTER2 (ZmSUT2) protein functions as a sucrose/H(+) symporter on the vacuolar membrane to export transiently stored sucrose. To understand the biological role of ZmSut2, we examined its spatial and temporal gene expression, determined the protein subcellular localization, and characterized loss-of-function mutations...
February 16, 2017: Journal of Integrative Plant Biology
https://www.readbyqxmd.com/read/28203032/icelandic-herring-eating-killer-whales-feed-at-night
#16
Gaëtan Richard, Olga A Filatova, Filipa I P Samarra, Ivan D Fedutin, Marc Lammers, Patrick J Miller
Herring-eating killer whales debilitate herring with underwater tail slaps and likely herd herring into tighter schools using a feeding-specific low-frequency pulsed call ('herding' call). Feeding on herring may be dependent upon daylight, as the whales use their white underside to help herd herring; however, feeding at night has not been investigated. The production of feeding-specific sounds provides an opportunity to use passive acoustic monitoring to investigate feeding behaviour at different times of day...
2017: Marine Biology
https://www.readbyqxmd.com/read/28199748/daylight-photodynamic-therapy-with-methylene-blue-in-plane-warts-a-randomized-double-blind-placebo-controlled-study
#17
G Fathy, M K Asaad, H M Rashid
Photodynamic therapy (PDT) is a technique that utilizes reactive oxygen species produced by a non-toxic dye or photosensitizer molecule in the presence of low intensity visible light to kill mammalian or microbial cells ((1)) . The advantages of PDT are numerous, it is a safe, non-invasive technique which yields effective therapeutic results ((2)) . Photodynamic therapy is not free of adverse effects. The most common one is pain during illumination. With the use of portable light sources to optimize the procedure and facilitate outpatient treatment, the concept of ambulatory PDT has emerged...
February 15, 2017: Photodermatology, Photoimmunology & Photomedicine
https://www.readbyqxmd.com/read/28193812/coping-with-copepods-do-right-whales-eubalaena-glacialis-forage-visually-in-dark-waters
#18
Thomas W Cronin, Jeffry I Fasick, Lorian E Schweikert, Sönke Johnsen, Lorren J Kezmoh, Mark F Baumgartner
North Atlantic right whales (Eubalaena glacialis) feed during the spring and early summer in marine waters off the northeast coast of North America. Their food primarily consists of planktonic copepods, Calanus finmarchicus, which they consume in large numbers by ram filter feeding. The coastal waters where these whales forage are turbid, but they successfully locate copepod swarms during the day at depths exceeding 100 m, where light is very dim and copepod patches may be difficult to see. Using models of E...
April 5, 2017: Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences
https://www.readbyqxmd.com/read/28193809/living-in-the-dark-does-not-mean-a-blind-life-bird-and-mammal-visual-communication-in-dim-light
#19
REVIEW
Vincenzo Penteriani, María Del Mar Delgado
For many years, it was believed that bird and mammal communication 'in the dark of the night' relied exclusively on vocal and chemical signalling. However, in recent decades, several case studies have conveyed the idea that the nocturnal world is rich in visual information. Clearly, a visual signal needs a source of light to work, but diurnal light (twilight included, i.e. any light directly dependent on the sun) is not the only source of luminosity on this planet. Actually, moonlight represents a powerful source of illumination that cannot be neglected from the perspective of visual communication...
April 5, 2017: Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences
https://www.readbyqxmd.com/read/28182529/sleepy-punishers-are-harsh-punishers
#20
Kyoungmin Cho, Christopher M Barnes, Cristiano L Guanara
The degree of punishment assigned to criminals is of pivotal importance for the maintenance of social order and cooperation. Nonetheless, the amount of punishment assigned to transgressors can be affected by factors other than the content of the transgressions. We propose that sleep deprivation in judges increases the severity of their sentences. We took advantage of the natural quasi-manipulation of sleep deprivation during the shift to daylight saving time in the spring and analyzed archival data from judicial punishment handed out in the U...
February 2017: Psychological Science
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