keyword
MENU ▼
Read by QxMD icon Read
search

Wood light

keyword
https://www.readbyqxmd.com/read/28500228/a-liana-from-the-lower-miocene-of-panama-and-the-fossil-record-of-connaraceae
#1
Nathan A Jud, Chris W Nelson
PREMISE OF THE STUDY: Permineralized wood is common in the Miocene beds exposed during the expansion of the Panama Canal. We describe a stem with the distinctive anatomy of a liana and evaluate the evolutionary, biogeographic, and ecological significance of this discovery. METHODS: The object of the study was obtained from a collection of fossil woods and fruits from a locality in the lower Miocene Cucaracha Formation, where the formation is exposed by the Culebra Cut of the Panama Canal...
May 12, 2017: American Journal of Botany
https://www.readbyqxmd.com/read/28499698/dental-microwear-and-pliocene-paleocommunity-ecology-of-bovids-primates-rodents-and-suids-at-kanapoi
#2
Peter S Ungar, Elicia F Abella, Jenny H E Burgman, Ignacio A Lazagabaster, Jessica R Scott, Lucas K Delezene, Fredrick K Manthi, J Michael Plavcan, Carol V Ward
Reconstructions of habitat at sites like Kanapoi are key to understanding the environmental circumstances in which hominins evolved during the early Pliocene. While Australopithecus anamensis shows evidence of terrestrial bipedality traditionally associated with a more open setting, its enamel has low δ(13)C values consistent with consumption of C3 foods, which predominate in wooded areas of tropical Africa. Habitat proxies, ranging from paleosols and their carbonates to associated herbivore fauna and their carbon isotope ratios, suggest a heterogeneous setting with both grass and woody plant components, though the proportions of each have been difficult to pin down...
May 9, 2017: Journal of Human Evolution
https://www.readbyqxmd.com/read/28494281/using-%C3%AE-dn-alkane-as-a-proxy-for-paleo-environmental-reconstruction-a-good-choice-to-sample-at-the-site-dominated-by-woods
#3
Jinzhao Liu, Zhisheng An, Zheng Wang, Huawu Wu
Some studies have demonstrated that leaf wax δDn-alkane values for a single species varied significantly with seasons. However, it is still not clear that the seasonality patterns of leaf wax δDn-alkane values in higher plants. Meanwhile, few efforts have been pursued to assess the effect of the light slopes (sunny vs. cloudy) on leaf wax δDn-alkane values. In this study, we systematically investigated plant wax δDn-alkane values and soil n-alkane δD values along different light slopes in different seasons (spring vs...
May 6, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28489935/indoor-residual-spraying-with-micro-encapsulated-pirimiphos-methyl-actellic%C3%A2-300cs-against-malaria-vectors-in-the-lake-victoria-basin-tanzania
#4
Fabian M Mashauri, Alphaxard Manjurano, Safari Kinung'hi, Jackline Martine, Eric Lyimo, Coleman Kishamawe, Chacha Ndege, Mahdi M Ramsan, Adeline Chan, Charles D Mwalimu, John Changalucha, Stephen Magesa
BACKGROUND: The indoor residual spraying programme for malaria vectors control was implemented in four districts of the Lake Victoria basin of Tanzania namely Ukerewe, Sengerema, Rorya andSerengeti. Entomological monitoring activities were implemented in one sentinel village in each district to evaluate the efficacy of pirimiphos-methyl 300 CS sprayed on different wall surfaces and its impact against malaria vectors post-IRS intervention. METHODS: The residual decay rate of p-methyl 300 CS applied at a target dosage of 1g a...
2017: PloS One
https://www.readbyqxmd.com/read/28485923/enabling-high-areal-capacity-lithium-sulfur-batteries-designing-anisotropic-and-low-tortuosity-porous-architectures
#5
Yiju Li, Kun Kelvin Fu, Chaoji Chen, Wei Luo, Tingting Gao, Shaomao Xu, Jiaqi Dai, Glenn Pastel, Yanbin Wang, Boyang Liu, Jianwei Song, Yanan Chen, Chunpeng Yang, Liangbing Hu
Lithium-sulfur (Li-S) batteries have attracted much attention due to their high theoretical energy density in comparison to conventional state-of-the-art lithium-ion batteries. However, low sulfur mass loading in the cathode results in low areal capacity and impedes the practical use of Li-S cells. Inspired by wood, a cathode architecture with natural, three-dimensionally (3D) aligned microchannels filled with reduced graphene oxide (RGO) were developed as an ideal structure for high sulfur mass loading. Compared with other carbon materials, the 3D porous carbon matrix has several advantages including low tortuosity, high electrical conductivity, and good structural stability, which make it an excellent 3D lightweight current collector...
May 12, 2017: ACS Nano
https://www.readbyqxmd.com/read/28481341/genome-sequencing-and-population-genomic-analyses-provide-insights-into-the-adaptive-landscape-of-silver-birch
#6
Jarkko Salojärvi, Olli-Pekka Smolander, Kaisa Nieminen, Sitaram Rajaraman, Omid Safronov, Pezhman Safdari, Airi Lamminmäki, Juha Immanen, Tianying Lan, Jaakko Tanskanen, Pasi Rastas, Ali Amiryousefi, Balamuralikrishna Jayaprakash, Juhana I Kammonen, Risto Hagqvist, Gugan Eswaran, Viivi Helena Ahonen, Juan Alonso Serra, Fred O Asiegbu, Juan de Dios Barajas-Lopez, Daniel Blande, Olga Blokhina, Tiina Blomster, Suvi Broholm, Mikael Brosché, Fuqiang Cui, Chris Dardick, Sanna E Ehonen, Paula Elomaa, Sacha Escamez, Kurt V Fagerstedt, Hiroaki Fujii, Adrien Gauthier, Peter J Gollan, Pauliina Halimaa, Pekka I Heino, Kristiina Himanen, Courtney Hollender, Saijaliisa Kangasjärvi, Leila Kauppinen, Colin T Kelleher, Sari Kontunen-Soppela, J Patrik Koskinen, Andriy Kovalchuk, Sirpa O Kärenlampi, Anna K Kärkönen, Kean-Jin Lim, Johanna Leppälä, Lee Macpherson, Juha Mikola, Katriina Mouhu, Ari Pekka Mähönen, Ülo Niinemets, Elina Oksanen, Kirk Overmyer, E Tapio Palva, Leila Pazouki, Ville Pennanen, Tuula Puhakainen, Péter Poczai, Boy J H M Possen, Matleena Punkkinen, Moona M Rahikainen, Matti Rousi, Raili Ruonala, Christiaan van der Schoot, Alexey Shapiguzov, Maija Sierla, Timo P Sipilä, Suvi Sutela, Teemu H Teeri, Arja I Tervahauta, Aleksia Vaattovaara, Jorma Vahala, Lidia Vetchinnikova, Annikki Welling, Michael Wrzaczek, Enjun Xu, Lars G Paulin, Alan H Schulman, Martin Lascoux, Victor A Albert, Petri Auvinen, Ykä Helariutta, Jaakko Kangasjärvi
Silver birch (Betula pendula) is a pioneer boreal tree that can be induced to flower within 1 year. Its rapid life cycle, small (440-Mb) genome, and advanced germplasm resources make birch an attractive model for forest biotechnology. We assembled and chromosomally anchored the nuclear genome of an inbred B. pendula individual. Gene duplicates from the paleohexaploid event were enriched for transcriptional regulation, whereas tandem duplicates were overrepresented by environmental responses. Population resequencing of 80 individuals showed effective population size crashes at major points of climatic upheaval...
May 8, 2017: Nature Genetics
https://www.readbyqxmd.com/read/28467070/studies-of-carbon-monoxide-release-from-ruthenium-ii-bipyridine-carbonyl-complexes-upon-uv-light-exposure
#7
Manja Kubeil, Robbin R Vernooij, Clemens Kubeil, Bayden R Wood, Bim Graham, Holger Stephan, Leone Spiccia
The UV-light-induced CO release characteristics of a series of ruthenium(II) carbonyl complexes of the form trans-Cl[RuLCl2(CO)2] (L = 4,4'-dimethyl-2,2'-bipyridine, 4'-methyl-2,2'-bipyridine-4-carboxylic acid, or 2,2'-bipyridine-4,4'-dicarboxylic acid) have been elucidated using a combination of UV-vis absorbance and Fourier transform infrared spectroscopies, multivariate curve resolution alternating least-squares analysis, and density functional theory calculations. In acetonitrile, photolysis appears to proceed via a serial three-step mechanism involving the sequential formation of [RuL(CO)(CH3CN)Cl2], [RuL(CH3CN)2Cl2], and [RuL(CH3CN)3Cl](+)...
May 3, 2017: Inorganic Chemistry
https://www.readbyqxmd.com/read/28441969/molecular-identification-of-plasmodium-spp-and-blood-meal-sources-of-anophelines-in-environmental-reserves-on-s%C3%A3-o-lu%C3%A3-s-island-state-of-maranh%C3%A3-o-brazil
#8
Mayra Araguaia Pereira Figueiredo, Silvia Maria Di Santi, Wilson Gómez Manrique, Luiz Ricardo Gonçalves, Marcos Rogério André, Rosangela Zacarias Machado
BACKGROUND: Considering the diversity of feeding habits that females of some species of anophelines present, it is important to understand which vertebrates are part of blood food sources and how important is the role of each in the ecoepidemiology of malaria. There are many vector species for Plasmodium spp. in the State of Maranhão, Brazil. In São Luís Island, Anopheles aquasalis is the main vector for human malaria; this species is abundant in areas with primates that are positive for Plasmodium...
April 26, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/28439179/big-data-science-opportunities-and-challenges-to-address-minority-health-and-health-disparities-in-the-21st-century
#9
Xinzhi Zhang, Eliseo J Pérez-Stable, Philip E Bourne, Emmanuel Peprah, O Kenrik Duru, Nancy Breen, David Berrigan, Fred Wood, James S Jackson, David W S Wong, Joshua Denny
Addressing minority health and health disparities has been a missing piece of the puzzle in Big Data science. This article focuses on three priority opportunities that Big Data science may offer to the reduction of health and health care disparities. One opportunity is to incorporate standardized information on demographic and social determinants in electronic health records in order to target ways to improve quality of care for the most disadvantaged populations over time. A second opportunity is to enhance public health surveillance by linking geographical variables and social determinants of health for geographically defined populations to clinical data and health outcomes...
2017: Ethnicity & Disease
https://www.readbyqxmd.com/read/28439084/preparation-of-heterostructured-wo3-tio2-catalysts-from-wood-fibers-and-its-versatile-photodegradation-abilities
#10
Likun Gao, Wentao Gan, Zhe Qiu, Xianxu Zhan, Tiangang Qiang, Jian Li
A facile route was adopted to synthesize heterostructured WO3/TiO2 photocatalysts from wood fibers through a two-steps hydrothermal method and a calcination process. The prepared WO3/TiO2-wood fibers were used as photocatalysts under UV irradiation for photodegradation of rhodamine B, methylene blue and methyl orange. In calcination process, the wood fibers acted as carbon substrates to prepare the WO3/TiO2 photocatalysts with high surface area and unique morphology. Thus, the significant enhanced photodegradation efficiency of the organic pollutants with the WO3/TiO2-wood fibers under UV irradiation was obtained...
April 24, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28433182/vitamin-d-fortified-chitosan-films-from-mushroom-waste
#11
Cristina Bilbao-Sainz, Bor-Sen Chiou, Tina Williams, Delilah Wood, Wen-Xian Du, Ivana Sedej, Zhaojun Ban, Victor Rodov, Elena Poverenov, Yakov Vinokur, Tara McHugh
Brown mushroom (Agaricus bisporus) stalk bases from mushroom waste were treated with UV-B light to rapidly increase vitamin D2 content. Chitin was also recovered from this waste and converted into chitosan by N-deacetylation. FTIR spectra showed that the mushroom chitosan were similar to chitosan from animal sources. Chitosan films were prepared using high molecular weight (HW), low molecular weight (LW) and fungal chitosan. UV-B treated mushroom particles were also incorporated into fungal chitosan films. The fungal chitosan films showed similar density, porosity and water vapor barrier properties to the LW and HW chitosan films...
July 1, 2017: Carbohydrate Polymers
https://www.readbyqxmd.com/read/28406622/nickel-catalyzed-enantioselective-reductive-cross-coupling-of-styrenyl-aziridines
#12
Brian P Woods, Manuel Orlandi, Chung-Yang Huang, Matthew S Sigman, Abigail G Doyle
A Ni-catalyzed reductive cross-coupling of styrenyl aziridines with aryl iodides is reported. This reaction proceeds by a stereoconvergent mechanism and is thus amenable to asymmetric catalysis using a chiral bioxazoline ligand for Ni. The process allows facile access to highly enantioenriched 2-arylphenethylamines from racemic aziridines. Multivariate analysis revealed that ligand polarizability, among other features, influences the observed enantioselectivity, shedding light on the success of this emerging ligand class for enantioselective Ni catalysis...
April 13, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/28387789/evolution-of-wood-anatomical-characters-in-nepenthes-and-close-relatives-of-caryophyllales
#13
Rachel Schwallier, Barbara Gravendeel, Hugo de Boer, Stephan Nylinder, Bertie Joan van Heuven, Anton Sieder, Sukaibin Sumail, Rogier van Vugt, Frederic Lens
Background and Aims: Nepenthes attracts wide attention with its spectacularly shaped carnivorous pitchers, cultural value and horticultural curiosity. Despite the plant's iconic fascination, surprisingly little anatomical detail is known about the genus beyond its modified leaf tip traps. Here, the wood anatomical diversity of Nepenthes is explored. This diversity is further assessed with a phylogenetic framework to investigate whether the wood characters within the genus are relevant from an evolutionary or ecological perspective, or rather depend on differences in developmental stages, growth habits, substrates or precipitation...
April 6, 2017: Annals of Botany
https://www.readbyqxmd.com/read/28381040/physical-interpretation-of-mueller-matrix-spectra-a-versatile-method-applied-to-gold-gratings
#14
Meng Wang, Anja Löhle, Bruno Gompf, Martin Dressel, Audrey Berrier
The interaction of nanostructures, periodic or random, with polarized light creates very rich physics where scattering, diffraction and absorbance are linked to a variety of dispersive modes and coupling effects. Each of these excitations depends strongly on polarization, angle of incidence, azimuthal orientation of the sample and wavelength. The entire optical response can be obtained, independently from any model, by measuring the Mueller matrices at various k-vectors over a broad frequency range. This results in complex data hiding the underlying physics...
March 20, 2017: Optics Express
https://www.readbyqxmd.com/read/28376883/asymptomatic-and-sub-microscopic-malaria-infection-in-kayah-state-eastern-myanmar
#15
Myo Thiha Zaw, Myo Thant, Tin Maung Hlaing, Naing Zin Aung, Min Thu, Kanit Phumchuea, Kanokwan Phusri, Teerawat Saeseu, Ritthideach Yorsaeng, Wang Nguitragool, Ingrid Felger, Jaranit Kaewkungwal, Liwang Cui, Jetsumon Sattabongkot
BACKGROUND: Myanmar has the heaviest burden of malaria in the Greater Mekong Sub-region. Asymptomatic Plasmodium spp. infections are common in this region and may represent an important reservoir of transmission that must be targeted for malaria elimination. METHODS: A mass blood survey was conducted among 485 individuals from six villages in Kayah State, an area of endemic but low transmission malaria in eastern Myanmar. Malaria infection was screened by rapid diagnostic test (RDT), light microscopy and real-time polymerase chain reaction (PCR), and its association with demographic factors was explored...
April 4, 2017: Malaria Journal
https://www.readbyqxmd.com/read/28370468/anisotropic-transparent-films-with-aligned-cellulose-nanofibers
#16
Mingwei Zhu, Yilin Wang, Shuze Zhu, Lisha Xu, Chao Jia, Jiaqi Dai, Jianwei Song, Yonggang Yao, Yanbin Wang, Yongfeng Li, Doug Henderson, Wei Luo, Heng Li, Marilyn L Minus, Teng Li, Liangbing Hu
Transparent films or substrates are ubiquitously used in photonics and optoelectronics, with glass and plastics as traditional choice of materials. Transparent films made of cellulose nanofibers are reported recently. However, all these films are isotropic in nature. This work, for the first time, reports a remarkably facile and effective approach to fabricating anisotropic transparent films directly from wood. The resulting films exhibit an array of exceptional optical and mechanical properties. The well-aligned cellulose nanofibers in natural wood are maintained during delignification, leading to an anisotropic film with high transparency (≈90% transmittance) and huge intensity ratio of transmitted light up to 350%...
March 29, 2017: Advanced Materials
https://www.readbyqxmd.com/read/28369994/a-biomimetic-fly-photoreceptor-model-elucidates-how-stochastic-adaptive-quantal-sampling-provides-a-large-dynamic-range
#17
Zhuoyi Song, Mikko Juusola
Light intensities (photons/s/um(2) ) in a natural scene vary over several orders of magnitude from shady woods to direct sunlight. A major challenge facing the visual system is how to map such a large dynamic input range to its limited output range, so that signal is neither buried into noise in darkness and nor saturated in brightness. A fly photoreceptor has achieved such a large dynamic range; it can encode intensity changes from single photons to billions more, outperforming man-made light sensors. This performance requires powerful light-adaptation, the neural implementation of which has only become clearer recently...
March 29, 2017: Journal of Physiology
https://www.readbyqxmd.com/read/28363550/energy-efficient-facile-extraction-process-of-cellulose-nanofibres-and-their-dimensional-characterization-using-light-scattering-techniques
#18
Chandravati Yadav, Arun Saini, Pradip K Maji
A chemi-mechanical approach was used to extract cellulose nanofibres (CNFs) from waste mango wood scraps using a mild chemical treatment ensuring no acid hydrolysis. The dimensional analysis for CNFs has been done by taking into account both the microscopic and light scattering techniques. The FESEM (field emission scanning electron microscopy) analysis revealed the diameter of obtained CNFs in the range of 5-40nm with an average diameter of approximately 12nm. The AFM (atomic force microscopy) analysis gave a more precise average diameter value of 5nm for the obtained CNFs...
June 1, 2017: Carbohydrate Polymers
https://www.readbyqxmd.com/read/28348716/understanding-protein-structure-deformation-on-the-surface-of-gold-nanoparticles-of-varying-size
#19
Karen E Woods, Y Randika Perera, Mackenzie B Davidson, Chloe A Wilks, Dinesh K Yadav, Nicholas C Fitzkee
Gold nanoparticles (AuNPs) have been of recent interest due to their unique optical properties and their biocompatibility. Biomolecules spontaneously adsorb to their surface, a trait that could potentially be exploited for drug targeting. Currently, it is unclear whether protein-AuNP interactions at the nanoparticle surface are dependent on nanoparticle size. In this work, we investigate whether varying surface curvature can induce protein unfolding and multilayer binding in citrate-coated AuNPs of various sizes...
December 15, 2016: Journal of Physical Chemistry. C, Nanomaterials and Interfaces
https://www.readbyqxmd.com/read/28334493/glucose-metabolism-in-mammalian-photoreceptor-inner-and-outer-segments
#20
REVIEW
Daniel S Narayan, Glyn Chidlow, John Pm Wood, Robert J Casson
Photoreceptors are the first order neurons of the visual pathway, converting light into electrical signals. Rods and cones are the two main types of photoreceptors in the mammalian retina. Rods are specialized for sensitivity at the expense of resolution and are responsible for vision in dimly lit conditions. Cones are responsible for high acuity central vision and colour vision. Many human retinal diseases are characterized by a progressive loss of photoreceptors. Photoreceptors consist of four primary regions: outer segments, inner segments, cell bodies, and synaptic terminals...
March 23, 2017: Clinical & Experimental Ophthalmology
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"