keyword
MENU ▼
Read by QxMD icon Read
search

illuminance

keyword
https://www.readbyqxmd.com/read/28432320/formation-of-cuo-nano-flowered-surfaces-via-submerged-photo-synthesis-of-crystallites-and-their-antimicrobial-activity
#1
Fumika Nishino, Melbert Jeem, Lihua Zhang, Kazumasa Okamoto, Satoshi Okabe, Seiichi Watanabe
We report the fabrication of flower-like CuO nanostructured surfaces via submerged photo-synthesis of crystallites (SPSC), which requires only UV illumination in neutral water. In this paper, we discuss the reaction mechanism of the photochemical formation of the SPSC-fabricated CuO nanostructures in detail based on surface microstructural analyses and a radiation-chemical consideration with additional gamma-ray irradiation. Since the SPSC method for surface nanostructural fabrication can work at low temperatures at atmospheric pressure without using harmful substances, it is a potential fabrication method for green nanotechnology applications...
April 21, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28432257/excess-diffuse-light-absorption-in-upper-mesophyll-limits-co2-drawdown-and-depresses-photosynthesis
#2
Jeffrey Mason Earles, Guillaume Théroux-Rancourt, Matthew E Gilbert, Andrew J McElrone, Craig Brodersen
In agricultural and natural systems, diffuse light can enhance plant primary productivity due to deeper penetration into and greater illumination of the entire canopy. However, for individual sun-grown leaves from three species, photosynthesis is actually less efficient under diffuse compared to direct light. Despite its potential impact on canopy-level productivity, the mechanism for this leaf-level 'diffuse light photosynthetic depression' effect is unknown. Here we investigate if the spatial distribution of light absorption relative to electron transport capacity in sun- and shade-grown H...
April 21, 2017: Plant Physiology
https://www.readbyqxmd.com/read/28431792/changes-to-histone-modifications-following-prenatal-alcohol-exposure-an-emerging-picture
#3
REVIEW
Eric J Chater-Diehl, Benjamin I Laufer, Shiva M Singh
Epigenetic mechanisms are important for facilitating gene-environment interactions in many disease etiologies, including Fetal Alcohol Spectrum Disorders (FASD). Extensive research into the role of DNA methylation and miRNAs in animal models has illuminated the complex role of these mechanisms in FASD. In contrast, histone modifications have not been as well researched, due in part to being less stable than DNA methylation and less well-characterized in disease. It is now apparent that even changes in transient marks can have profound effects if they alter developmental trajectories...
February 4, 2017: Alcohol
https://www.readbyqxmd.com/read/28431663/effects-of-torcetrapib-and-statin-treatment-on-apoc-iii-and-apoprotein-defined-lipoprotein-subclasses-from-the-illuminate-trial
#4
John Bagdade, Philip Barter, Carmen Quiroga, Pierre Alaupovic
In the ILLUMINATE Trial, treatment with the cholesteryl ester transfer protein inhibitor torcetrapib resulted in a significant increase in both atherosclerotic cardiovascular disease events and total mortality which was not explained by changes in the routinely measured plasma lipids. To determine whether alterations in lipoproteins defined by their apoprotein content that are not estimated with conventional laboratory methods contributed to these unexpected events, we measured the apoB- and apoA-containing subclasses in a subgroup of ILLUMINATE participants...
March 18, 2017: American Journal of Cardiology
https://www.readbyqxmd.com/read/28431045/water-table-drawdown-shapes-the-depth-dependent-variations-in-prokaryotic-diversity-and-structure-in-zoige-peatlands
#5
Qiuping Zhong, Huai Chen, Liangfeng Liu, Yixin He, Dan Zhu, Lin Jiang, Wei Zhan, Ji Hu
Microbial communities are important to ecosystem function and sensitive to hydrological dynamics. However, we lack predictable knowledge about how soil microorganisms respond to water table drawdown in different depths. This research used high-throughput sequencing method to determine the responses of prokaryotic communities to the changes of water table and depth on Zoige peatlands. Our results showed that water table drawdown reduced alpha diversity indices (observed species, Shannon diversity and Chao1 richness) of prokaryotic communities...
April 18, 2017: FEMS Microbiology Ecology
https://www.readbyqxmd.com/read/28431041/bidirectional-approaches-for-optogenetic-regulation-of-gene-expression-in-mammalian-cells-using-arabidopsis-cryptochrome-2
#6
Gopal P Pathak, Jessica I Spiltoir, Camilla Höglund, Lauren R Polstein, Sari Heine-Koskinen, Charles A Gersbach, Jari Rossi, Chandra L Tucker
Optogenetic tools allow regulation of cellular processes with light, which can be delivered with spatiotemporal resolution. In previous work, we used cryptochrome 2 (CRY2) and CIB1, Arabidopsis proteins that interact upon light illumination, to regulate transcription with light in yeast. While adopting this approach to regulate transcription in mammalian cells, we observed light-dependent redistribution and clearing of CRY2-tethered proteins within the nucleus. The nuclear clearing phenotype was dependent on the presence of a dimerization domain contained within the CRY2-fused transcriptional activators...
April 20, 2017: Nucleic Acids Research
https://www.readbyqxmd.com/read/28430258/transparency-measurement-of-thin-films-with-one-sided-optical-access-using-fluorescence-imaging
#7
A F Forughi, B Stoeber, S I Green
Optical transparency can be determined by passing light through an object and comparing the intensity of the transmitted light with the intensity of the incident light. This measurement needs optical access to both sides of the object for illumination and measurement. Optical access to both sides of the object may be restricted in some situations due to the presence of an opaque obstacle, lack of physical access, etc. A novel technique of transmittance measurement is presented that is able to determine the transparency of thin-film objects with optical access limited to just one side...
April 20, 2017: Applied Optics
https://www.readbyqxmd.com/read/28430254/lensless-wide-field-single-shot-imaging-through-turbid-media-based-on-object-modulated-speckles
#8
Pengfei Wu, Zi Liang, Xing Zhao, Lei Su, Lipei Song
The need to image objects through light-scattering materials is common in a range of applications. Different methods have been investigated to acquire the image of the object when diffusers are presented. In this paper, we demonstrate the object reconstruction with single-shot imaging based on the correlography principle and phase retrieval algorithm with coherent illumination. We prove the possibility of reconstructing positive and negative objects in both transmission and reflection modes with collimated and scattered light...
April 20, 2017: Applied Optics
https://www.readbyqxmd.com/read/28430250/tolerancing-the-alignment-of-large-core-optical-fibers-fiber-bundles-and-light-guides-using-a-fourier-approach
#9
Travis W Sawyer, Ryan Petersburg, Sarah E Bohndiek
Optical fiber technology is found in a wide variety of applications to flexibly relay light between two points, enabling information transfer across long distances and allowing access to hard-to-reach areas. Large-core optical fibers and light guides find frequent use in illumination and spectroscopic applications, for example, endoscopy and high-resolution astronomical spectroscopy. Proper alignment is critical for maximizing throughput in optical fiber coupling systems; however, there currently are no formal approaches to tolerancing the alignment of a light-guide coupling system...
April 20, 2017: Applied Optics
https://www.readbyqxmd.com/read/28430222/impact-of-partial-coherence-on-the-apparent-optical-transfer-function-derived-from-the-response-to-amplitude-edges
#10
S Mojtaba Shakeri, Lucas J van Vliet, Sjoerd Stallinga
We present an investigation of the impact of partial coherence on optical imaging systems with the focus on whole slide imaging (WSI) systems for digital pathology. The investigation is based on the analysis of the edge response of the optical system, which gives rise to an apparent optical transfer function (OTF) that can be linked to two elementary complex functions Q and U. The function Q is directly related to the transmission cross coefficient (TCC) and can be identified with the performance function first introduced by Kintner and Sillitto...
April 20, 2017: Applied Optics
https://www.readbyqxmd.com/read/28430208/illumination-data-transmission-and-energy-harvesting-the-threefold-advantage-of-vlc
#11
Harilaos G Sandalidis, Alexander Vavoulas, Theodoros A Tsiftsis, Nicholas Vaiopoulos
Visible light communication (VLC) is a promising technology that meets illumination and information transmission requirements in an indoor environment. Because light waves convey energy, a VLC link may exploit that fact for energy harvesting purposes. In this context, a single light emitting diode lamp located at a close distance over a tablet or laptop PC can potentially offer simultaneous lighting, Internet access, and battery recharging without cables. The present study introduces this threefold role of VLC systems by properly adapting some energy harvesting receiver architectures recently launched for usage in RF communications...
April 20, 2017: Applied Optics
https://www.readbyqxmd.com/read/28429192/photoinactivation-effect-of-eosin-methylene-blue-and-chlorophyllin-sodium-copper-against-staphylococcus-aureus-and-escherichia-coli
#12
Cynthia S A Caires, Cassia R B Leal, Carlos A N Ramos, Danielle Bogo, Alessandra R Lima, Eduardo J Arruda, Samuel L Oliveira, Anderson R L Caires, Valter A Nascimento
The use of eosin methylene blue according to Giemsa as photosensitizer is presented for the first time in this paper. The present study evaluated the potential application of chlorophyllin sodium copper salt (CuChlNa) and eosin methylene blue according to Giemsa (EMB) as antimicrobial photosensitizers (aPS) for photodynamic inactivation (PDI) of Staphylococcus aureus (gram-positive) and Escherichia coli (gram-negative) bacteria. The experiments were performed using S. aureus stain ATCC 25923 and E. coli ATCC 25922 in which five aPS concentrations (0...
April 20, 2017: Lasers in Medical Science
https://www.readbyqxmd.com/read/28428875/genetic-relationships-among-eriobotrya-species-revealed-by-genome-wide-rad-sequence-data
#13
Xianghui Yang, Samaneh Kazemiani Najafabadi, Muhammad Qasim Shahid, Zhike Zhang, Yi Jing, Weiling Wei, Jingcheng Wu, Yongshun Gao, Shunquan Lin
Restriction site-associated DNA sequencing (RAD-seq) was used to illuminate the genetic relationships among Eriobotrya species. The raw data were filtered, and 221 million clean reads were used for further analysis. A total of 1,983,332 SNPs were obtained from 23 Eriobotrya species and two relative genera. We obtained similar results by neighbor-joining and maximum likelihood phylogenetic trees. All Eriobotrya plants grouped together into a big clade, and two out-groups clustered together into a single or separate clade...
April 2017: Ecology and Evolution
https://www.readbyqxmd.com/read/28428172/how-are-non-numerical-prognostic-statements-interpreted-and-are-they-subject-to-positive-bias
#14
Anne Moyer, Samantha Siess, Sumeet Bhinder
OBJECTIVES: Frank, clear communication with family members of terminally ill or incapacitated patients has important implications for well-being, satisfaction with care and sound decision-making. However, numerical prognostic statements, particularly more negative ones, have been found to be interpreted in a positively biased manner. Less precise non-numerical statements, preferred by physicians, and particularly statements using threatening terms (dying vs surviving) may be even more subject to such biases...
April 20, 2017: BMJ Supportive & Palliative Care
https://www.readbyqxmd.com/read/28428045/sco2-deficient-mice-develop-increased-adiposity-and-insulin-resistance
#15
Shauna Hill, Sathyaseelan S Deepa, Kavithalakshmi Sataranatarajan, Pavithra Premkumar, Daniel Pulliam, Yuhong Liu, Vanessa Y Soto, Kathleen E Fischer, Holly Van Remmen
Cytochrome c oxidase (COX) is an essential transmembrane protein complex (Complex IV) in the mitochondrial respiratory electron chain. Mutations in genes responsible for the assembly of COX are associated with Leigh syndrome, cardiomyopathy, spinal muscular atrophy and other fatal metabolic disorders in humans. Previous studies have shown that mice lacking the COX assembly protein Surf1 (Surf1(-/-) mice) paradoxically show a number of beneficial metabolic phenotypes including increased insulin sensitivity, upregulation of mitochondrial biogenesis, induction of stress response pathways and increased lifespan...
April 17, 2017: Molecular and Cellular Endocrinology
https://www.readbyqxmd.com/read/28426747/metabolic-analysis-of-radioresistant-medulloblastoma-stem-like-clones-and-potential-therapeutic-targets
#16
Lue Sun, Takashi Moritake, Kazuya Ito, Yoshitaka Matsumoto, Hironobu Yasui, Hidehiko Nakagawa, Aki Hirayama, Osamu Inanami, Koji Tsuboi
Medulloblastoma is a fatal brain tumor in children, primarily due to the presence of treatment-resistant medulloblastoma stem cells. The energy metabolic pathway is a potential target of cancer therapy because it is often different between cancer cells and normal cells. However, the metabolic properties of medulloblastoma stem cells, and whether specific metabolic pathways are essential for sustaining their stem cell-like phenotype and radioresistance, remain unclear. We have established radioresistant medulloblastoma stem-like clones (rMSLCs) by irradiation of the human medulloblastoma cell line ONS-76...
2017: PloS One
https://www.readbyqxmd.com/read/28425559/multimodal-optical-setup-based-on-spectrometer-and-cameras-combination-for-biological-tissue-characterization-with-spatially-modulated-illumination
#17
Daniel Baruch, David Abookasis
No abstract text is available yet for this article.
April 1, 2017: Journal of Biomedical Optics
https://www.readbyqxmd.com/read/28425557/dual-spectra-band-emissive-eu-2-mn-2-co-activated-alkaline-earth-phosphates-for-indoor-plant-growth-novel-phosphor-converted-leds
#18
Young Jun Yun, Jin Kyu Kim, Ji Young Ju, Seul Ki Choi, Woon Ik Park, Jae Yong Suh, Ha-Kyun Jung, Yongseon Kim, Sungho Choi
This paper reports designing a novel single composition blue/red color illuminating phosphor followed by fabricating "smart" agricultural/horticultural LED lighting. Color-tunable Eu(2+)/Mn(2+) co-activated alkaline earth phosphates, Na(Sr,Ba)PO4 and Ca3Mg3(PO4)4, are considered, and the stable doping sites for the corresponding activators are identified by using first-principle DFT calculations. We can realize the designated color purity with stable thermal quenching preserved luminescence behavior is induced by the Eu(2+) center positioned at different coordination states with intermixed Sr(2+)/Ba(2+) sites in Na(Sr,Ba)PO4 hosts...
April 20, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28425533/impact-of-lipid-composition-and-photosensitizer-hydrophobicity-on-the-efficiency-of-light-triggered-liposomal-release
#19
Julien Massiot, Ali Makky, Florent Di Meo, David Chapron, Patrick Trouillas, Véronique Rosilio
Photo-triggerable liposomes are considered nowadays as promising drug delivery devices due to their potential to release encapsulated drugs in a spatial and temporal manner. In this work, we have investigated the photopermeation efficiency of three photosensitizers (PSs), namely verteporfin, pheophorbide a and m-THPP when incorporated into liposomes with well-defined lipid compositions (SOPC, DOPC or SLPC). By changing the nature of phospholipids and PSs, the illumination of the studied systems was shown to significantly alter their lipid bilayer properties via the formation of lipid peroxides...
April 20, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28425488/an-analytic-approach-for-optimal-geometrical-design-of-gaas-nanowires-for-maximal-light-harvesting-in-photovoltaic-cells
#20
Dan Wu, Xiaohong Tang, Kai Wang, Xianqiang Li
Semiconductor nanowires(NWs) with subwavelength scale diameters have demonstrated superior light trapping features, which unravel a new pathway for low cost and high efficiency future generation solar cells. Unlike other published work, a fully analytic design is for the first time proposed for optimal geometrical parameters of vertically-aligned GaAs NW arrays for maximal energy harvesting. Using photocurrent density as the light absorbing evaluation standard, 2 μm length NW arrays whose multiple diameters and periodicity are quantitatively identified achieving the maximal value of 29...
April 20, 2017: Scientific Reports
keyword
keyword
82341
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"