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https://www.readbyqxmd.com/read/28548907/evaluation-of-thermal-optical-analysis-method-of-elemental-carbon-for-marine-fuel-exhaust
#1
Maija K Lappi, Jyrki P Ristimäki
The awareness of black carbon (BC) as the second largest anthropogenic contributor in global warming and an ice melting enhancer has increased. Due to prospected increase in shipping especially in the Arctic reliability of BC emissions and their invented amounts from ships is gaining more attention. The International Maritime Organisation (IMO) is actively working towards estimation of quantities and effects of BC especially in the Arctic. IMO has launched work towards constituting a definition for BC and agreeing appropriate methods for its determination from shipping emission sources...
May 26, 2017: Journal of the Air & Waste Management Association
https://www.readbyqxmd.com/read/28548886/association-of-preventive-maintenance-therapy-compliance-and-peri-implant-diseases-a-cross-sectional-study
#2
Alberto Monje, Hom-Lay Wang, José Nart
AIM: This study was aimed at investigating the association between peri-implant maintenance therapy (PIMT) and the frequency of peri-implant diseases, and to further identify the factors that contribute to failure of PIMT compliance. MATERIAL AND METHODS: A cross-sectional study on healthy partial edentulous patients was conducted. These were grouped in the following categories according to the PIMT compliance: regular compliers (RC) (≥2 PIMT/year), erratic compliers (EC) (<2 PIMT/year), and non-compliers (NC) (0 PIMT/year)...
May 26, 2017: Journal of Periodontology
https://www.readbyqxmd.com/read/28548533/novel-dark-matter-constraints-from-antiprotons-in-light-of-ams-02
#3
Alessandro Cuoco, Michael Krämer, Michael Korsmeier
We evaluate dark matter (DM) limits from cosmic-ray antiproton observations using the recent precise AMS-02 measurements. We properly take into account cosmic-ray propagation uncertainties, fitting DM and propagation parameters at the same time and marginalizing over the latter. We find a significant indication of a DM signal for DM masses near 80 GeV, with a hadronic annihilation cross section close to the thermal value, ⟨σv⟩≈3×10^{-26}  cm^{3} s^{-1}. Intriguingly, this signal is compatible with the DM interpretation of the Galactic center gamma-ray excess...
May 12, 2017: Physical Review Letters
https://www.readbyqxmd.com/read/28548011/sex-work-and-three-dimensions-of-self-esteem-self-worth-authenticity-and-self-efficacy
#4
Cecilia Benoit, Michaela Smith, Mikael Jansson, Samantha Magnus, Jackson Flagg, Renay Maurice
Sex work is assumed to have a negative effect on self-esteem, nearly exclusively expressed as low self-worth, due to its social unacceptability and despite the diversity of persons, positions and roles within the sex industry. In this study, we asked a heterogeneous sample of 218 Canadian sex workers delivering services in various venues about how their work affected their sense of self. Using thematic analysis based on a three-dimensional conception of self-esteem - self-worth (viewing oneself in a favourable light), authenticity (being one's true self) and self-efficacy (competency) - we shed light on the relationship between involvement in sex work and self-esteem...
May 26, 2017: Culture, Health & Sexuality
https://www.readbyqxmd.com/read/28547745/medical-students-and-professional-anatomists-do-not-perceive-gender-bias-within-imagery-featuring-anatomy
#5
Susan Morgan, Odile Plaisant, Baptiste Lignier, Bernard J Moxham
Previous studies suggest that, while both medical students and professional anatomists recognise the importance of gender issues and do not wish to associate with sexism, most are unaware of the possible negative aspects of sexism within anatomy (Morgan et al., 2014, 2016). To further investigate these issue, we provided second year medical students at Cardiff University (n=293) and at the University of Paris Descartes, Sorbonne Paris Cité (n= 142) and professional anatomists in Europe (n= 208) with a questionnaire inviting them to address the possibility that gender factors within anatomical imagery (both historical and contemporary) hinder the dispassionate representation of anatomy...
May 25, 2017: Clinical Anatomy
https://www.readbyqxmd.com/read/28546653/biosocial-conservation-integrating-biological-and-ethnographic-methods-to-study-human-primate-interactions
#6
Joanna M Setchell, Emilie Fairet, Kathryn Shutt, Siân Waters, Sandra Bell
Biodiversity conservation is one of the grand challenges facing society. Many people interested in biodiversity conservation have a background in wildlife biology. However, the diverse social, cultural, political, and historical factors that influence the lives of people and wildlife can be investigated fully only by incorporating social science methods, ideally within an interdisciplinary framework. Cultural hierarchies of knowledge and the hegemony of the natural sciences create a barrier to interdisciplinary understandings...
2017: International Journal of Primatology
https://www.readbyqxmd.com/read/28546647/environmental-factors-regulating-gaping-activity-of-the-bivalve-arctica-islandica-in-northern-norway
#7
Irene Ballesta-Artero, Rob Witbaard, Michael L Carroll, Jaap van der Meer
Arctica islandica is the longest-living non-colonial animal known at present. It inhabits coastal waters in the North Atlantic and its annual shell increments are widely used for paleoclimatic reconstructions. There is no consensus, however, about the intra-annual timing of its feeding activity and growth. This research aims to identify the main environmental drivers of A. islandica valve gape to clarify the ambiguity surrounding its seasonal activity. A lander was deployed from February 2014 to September 2015 on the sea bottom at Ingøya, Norway (71°03'N, 24°05'E) containing living A...
2017: Marine Biology
https://www.readbyqxmd.com/read/28546458/proteoglycans-ion-channels-and-cell-matrix-adhesion
#8
REVIEW
Ioli Mitsou, Hinke A B Multhaupt, John R Couchman
Cell surface proteoglycans comprise a transmembrane or membrane-associated core protein to which one or more glycosaminoglycan chains are covalently attached. They are ubiquitous receptors on nearly all animal cell surfaces. In mammals, the cell surface proteoglycans include the six glypicans, CD44, NG2 (CSPG4), neuropilin-1 and four syndecans. A single syndecan is present in invertebrates such as nematodes and insects. Uniquely, syndecans are receptors for many classes of proteins that can bind to the heparan sulphate chains present on syndecan core proteins...
May 25, 2017: Biochemical Journal
https://www.readbyqxmd.com/read/28546455/objectively-measured-sedentary-time-and-cardiovascular-risk-factor-control-in-us-hispanics-latinos-with-diabetes-mellitus-results-from-the-hispanic-community-health-study-study-of-latinos-hchs-sol
#9
Xueyin Wang, Garrett Strizich, Simin Hua, Daniela Sotres-Alvarez, Christina Buelna, Linda C Gallo, Marc D Gellman, Yasmin Mossavar-Rahmani, Matthew J O'Brien, Mark Stoutenberg, Tao Wang, M Larissa Avilés-Santa, Robert C Kaplan, Qibin Qi
BACKGROUND: Cardiovascular disease (CVD) risk factor control is a cornerstone of diabetes mellitus management. Little is known about relationships of objectively measured sedentary time and physical activity with major CVD risk factor control in individuals with diabetes mellitus. We examined associations of objectively measured sedentary time and moderate-to-vigorous physical activity with reaching major CVD risk factor control goals among US Hispanic/Latino adults with diabetes mellitus...
May 25, 2017: Journal of the American Heart Association
https://www.readbyqxmd.com/read/28546125/molecular-cloning-and-functional-characterization-of-coft1-a-homolog-of-flowering-locus-t-ft-from-camellia-oleifera
#10
Hengjiu Lei, Shuchai Su, Luyi Ma, Yue Wen, Xiangnan Wang
FLOWERING LOCUS T (FT) is an important integrator of flowering genetic pathways and plays crucial roles in flowering transition. The tea-oil tree (Camellia oleifera Abel.) is a valuable woody oil crop, but the molecular mechanisms controlling flowering are still unclear. In this study, a FT-like gene, CoFT1, was isolated and characterized from C. oleifera. The CoFT1 protein was localized in the nucleus and cytoplasm of Arabidopsis protoplasts, and exhibited no transactivation activity in yeast cells. CoFT1 was highly expressed in mature leaves and reproductive organs, such as flower buds, flowers, flower organs, and young fruits...
May 22, 2017: Gene
https://www.readbyqxmd.com/read/28545161/classic-galactosemia-study-on-the-late-prenatal-development-of-galt-specific-activity-in-a-sheep-model
#11
Ana I Coelho, Jörgen Bierau, Martijn Lindhout, Jelle Achten, Boris W Kramer, M Estela Rubio-Gozalbo
BACKGROUND: Classic galactosemia results from deficient activity of galactose-1-phosphate uridylyltransferase (GALT), a key enzyme of galactose metabolism. Despite early diagnosis and early postnatal therapeutic intervention, patients still develop neurologic and fertility impairments. Prenatal developmental toxicity has been hypothesized as a determinant factor of disease. In order to shed light on the importance of prenatal GALT activity, several studies have examined GALT activity throughout development...
May 25, 2017: Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology
https://www.readbyqxmd.com/read/28545131/major-changes-in-microbial-diversity-and-community-composition-across-gut-sections-of-a-juvenile-panchlora-cockroach
#12
Erin A Gontang, Frank O Aylward, Camila Carlos, Tijana Glavina Del Rio, Mansi Chovatia, Alison Fern, Chien-Chi Lo, Stephanie A Malfatti, Susannah G Tringe, Cameron R Currie, Roberto Kolter
Investigations of gut microbiomes have shed light on the diversity and genetic content of these communities, and helped shape our understanding of how host-associated microorganisms influence host physiology, behavior, and health. Despite the importance of gut microbes to metazoans, our understanding of the changes in diversity and composition across the alimentary tract, and the source of the resident community are limited. Here, using community metagenomics and 16S rRNA gene sequencing, we assess microbial community diversity and coding potential in the foregut, midgut, and hindgut of a juvenile Panchlora cockroach, which resides in the refuse piles of the leaf-cutter ant species Atta colombica...
2017: PloS One
https://www.readbyqxmd.com/read/28545124/cornet-assigning-function-to-networks-of-co-evolving-residues-by-automated-literature-mining
#13
Tom van den Bergh, Giorgio Tamo, Alberto Nobili, Yifeng Tao, Tianwei Tan, Uwe T Bornscheuer, Remko K P Kuipers, Bas Vroling, René M de Jong, Kalyanasundaram Subramanian, Peter J Schaap, Tom Desmet, Bernd Nidetzky, Gert Vriend, Henk-Jan Joosten
CorNet is a web-based tool for the analysis of co-evolving residue positions in protein super-family sequence alignments. CorNet projects external information such as mutation data extracted from literature on interactively displayed groups of co-evolving residue positions to shed light on the functions associated with these groups and the residues in them. We used CorNet to analyse six enzyme super-families and found that groups of strongly co-evolving residues tend to consist of residues involved in a same function such as activity, specificity, co-factor binding, or enantioselectivity...
2017: PloS One
https://www.readbyqxmd.com/read/28544639/biomimetic-model-of-tumor-microenvironment-on-microfluidic-platform
#14
Minhwan Chung, Jungho Ahn, Kyungmin Son, Sudong Kim, Noo Li Jeon
The "Tumor microenvironment" (TME) is a complex, interacting system of the tumor and its surrounding environment. The TME has drawn more attention recently in attempts to overcome current drug resistance and the recurrence of cancer by understanding the cancer and its microenvironment systematically, beyond past reductionist approaches. However, a lack of experimental tools to dissect the intricate interactions has hampered in-depth research into the TME. Here, a biomimetic TME model using a microfluidic platform is presented, which enables the interaction between TME constituents to be studied in a comprehensive manner...
May 24, 2017: Advanced Healthcare Materials
https://www.readbyqxmd.com/read/28544632/understanding-the-limiting-factors-of-solvent-annealed-small-molecule-bulk-heterojunction-organic-solar-cells-from-a-chemical-perspective
#15
Aurelien Viterisi, Daniel Fernandez, Vijay Kumar Challuri, James William Ryan, Eugenia Martinez-Ferrero, Francesc Guispert-Guirado, Marta Martinez, Eduardo Escudero, Caterina Stenta, Lluis Francisco Marsal, Emilio Palomares
A detailed account on the limiting factors of solvent annealed bulk-heterojunction small molecule organic solars cell is given. This account is based on the extensive characterization of solar cell devices made from a library of five diketopyrolopyrole (DPP) donor dyes. Their chemical structure is designed in such a way as to provide insights on the energetics of solar cell active layer microstructure formation. Numerous chemical and physical properties of the active layers are assessed and interrelated such as light absorption, molecular packing in the solid state, crystal-forming properties in thin films, charge carrier mobility and charge carrier recombination kinetics...
May 24, 2017: ChemSusChem
https://www.readbyqxmd.com/read/28544130/adaptation-of-a-scale-to-measure-coping-strategies-in-informal-primary-caregivers-a-case-of-validation-with-small-samples
#16
Francisco Javier Rosas-Santiago, María Luisa Marván Garduño, Roberto Lagunes-Córdoba
BACKGROUND: The recovery process of a psychiatric patient is related to his primary informal caregiver's style of coping with stress. There is insufficient literature on validations of instruments that measure coping styles in this population. OBJECTIVE: To adapt and validate a scale to measure coping strategies in primary informal caregivers. METHOD: The adapted scale was based on the Extreme Coping Scale of López-Vázquez and Marván. Items from that scale were adapted for application to informal caregivers...
May 25, 2017: Journal of Psychiatric and Mental Health Nursing
https://www.readbyqxmd.com/read/28544108/elevated-intrathoracic-co2-pressure-during-thoracoscopic-surgery-decreases-regional-cerebral-oxygen-saturation-in-neonates-and-infants-a-pilot-study
#17
Felix Neunhoeffer, Steven W Warmann, Michael Hofbeck, Alisa Müller, Frank Fideler, Guido Seitz, Martin U Schuhmann, Hans-Joachim Kirschner, Matthias Kumpf, Jörg Fuchs
BACKGROUND: Intraoperative hypercapnia and acidosis are risk factors during thoracoscopy in neonates and infants. METHODS: In a prospective pilot study, we evaluated the effects of thoracoscopy in neonates and infants on cerebral microcirculation, oxygen saturation, and oxygen consumption. Regional cerebral oxygen saturation and blood flow were measured noninvasively using a new device combining laser Doppler flowmetry and white light spectrometry. Additionally, cerebral fractional tissue oxygen extraction and approximated oxygen consumption were calculated...
May 24, 2017: Paediatric Anaesthesia
https://www.readbyqxmd.com/read/28543699/immune-and-molecular-correlates-in-melanoma-treated-with-immune-checkpoint-blockade
#18
REVIEW
Elizabeth H Byrne, David E Fisher
Immunotherapy for metastatic melanoma has a decades-long history, and the relatively recent use of checkpoint inhibitors has revolutionized treatment. Durable and sometimes complete remission of metastatic melanoma is now achievable in some patients who receive checkpoint-blocking therapy. However, it is unclear why some patients fare better than others. This review highlights several molecular indicators of response to checkpoint inhibition in metastatic melanoma, focusing on tumor programmed death ligand 1 expression, major histocompatibility complex class I expression, mutational load in the tumor, and T-cell infiltration into the tumor...
June 1, 2017: Cancer
https://www.readbyqxmd.com/read/28542593/lack-of-the-pga-exopolysaccharide-in-salmonella-as-an-adaptive-trait-for-survival-in-the-host
#19
Maite Echeverz, Begoña García, Amaia Sabalza, Jaione Valle, Toni Gabaldón, Cristina Solano, Iñigo Lasa
Many bacteria build biofilm matrices using a conserved exopolysaccharide named PGA or PNAG (poly-β-1,6-N-acetyl-D-glucosamine). Interestingly, while E. coli and other members of the family Enterobacteriaceae encode the pgaABCD operon responsible for PGA synthesis, Salmonella lacks it. The evolutionary force driving this difference remains to be determined. Here, we report that Salmonella lost the pgaABCD operon after the divergence of Salmonella and Citrobacter clades, and previous to the diversification of the currently sequenced Salmonella strains...
May 24, 2017: PLoS Genetics
https://www.readbyqxmd.com/read/28542344/dynamic-changes-of-anterior-segment-in-patients-with-different-stages-of-primary-angle-closure-in-both-eyes-and-normal-subjects
#20
Jialiu Lin, Zhonghao Wang, Chuchen Chung, Jianan Xu, Miaomiao Dai, Jingjing Huang
PURPOSE: To compare changes in anterior segment parameters under light and dark (light-to-dark) conditions among eyes with chronic primary angle-closure glaucoma (CPACG), fellow eyes with confirmed or suspect primary angle-closure (PAC or PACS), and age-matched healthy eyes. METHODS: Consecutive patients with CPACG in one eye and PAC/PACS in the fellow eye, as well as age-matched healthy subjects were recruited. Anterior segment optical coherence tomography measurements were conducted under light and dark conditions, and anterior chamber, lens, and iris parameters compared...
2017: PloS One
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