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https://www.readbyqxmd.com/read/28092825/non-invasive-techniques-for-revealing-the-palette-of-the-romantic-painter-francesco-hayez
#1
Laura Rampazzi, Valentina Brunello, Cristina Corti, Elena Lissoni
This paper describes the first systematic analysis of the palette of Francesco Hayez, one of the most outstanding artists of European Romanticism, whose painting technique has never been extensively investigated despite the plethora of artistic studies. He lived in a particular moment in the history of painting, as in the first half of the 19th century many synthetic pigments were available, also in tin tubes, but traditional materials were still used. Sixteen paintings on canvas and on panels, created between 1823 and 1868, were analyzed in situ through non-invasive techniques (infrared reflectography and infrared reflection spectroscopy)...
January 5, 2017: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
https://www.readbyqxmd.com/read/28092824/chemically-modified-amino-porphyrin-tio2-for-the-degradation-of-acid-black-1-under-day-light-illumination
#2
Balu Krishnakumar, Avula Balakrishna, Cláudia T Arranja, Carlos M F Dias, Abilio J F N Sobral
In this paper, for the first time, chemically modified 5,10,15,20-meso-tetra-(para-amino)-phenyl-porphyrin/TiO2 (TPAPP/TiO2) was prepared and used for the degradation of an azo dye Acid Black 1 (AB 1) under direct sunlight. Initially, TiO2 was prepared by sol-gel method. Before making a TPAPP/TiO2 composite, the surface modification of TiO2 was carried out with glycidoxypropyltrimethoxy silane (GPTMS) which acts as a coupling agent. This is an epoxy terminated silane and could easily bond to the amino group of TPAPP through epoxy cleavage...
January 9, 2017: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
https://www.readbyqxmd.com/read/28091637/investigation-of-a-new-bis-carboxylate-triazole-based-anchoring-ligand-for-dye-solar-cell-chromophore-complexes
#3
Alessandro Sinopoli, Fiona A Black, Christopher J Wood, Elizabeth A Gibson, Paul I P Elliott
A novel anchoring ligand for dye-sensitised solar cell chromophoric complexes, 1-(2,2'-bipyrid-4-yl)-1,2,3-triazole-4,5-dicarboxylic acid (dctzbpy), is described. The new dye complexes [Ru(bpy)2(dctzbpy)][PF6]2 (AS16), [Ir(ppy)2(dctzbpy)][PF6] (AS17) and [Re(dctzbpy)(CO)3Cl] (AS18) were prepared in a two stage procedure with intermediate isolation of their diester analogues, AS16-Et2, AS17-Et2 and AS18-Et2 respectively. Electrochemical analysis of AS16-Et2, AS17-Et2 and AS18-Et2 reveal reduction potentials in the range -1...
January 16, 2017: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/28089896/characterization-and-expression-analysis-of-a-chitinase-gene-pmchi-4-from-black-tiger-shrimp-penaeus-monodon-under-pathogen-infection-and-ambient-ammonia-nitrogen-stress
#4
Kaimin Zhou, Falin Zhou, Jianhua Huang, Qibin Yang, Song Jiang, Lihua Qiu, Lishi Yang, Caiyan Zhu, Shigui Jiang
Chitinase is a multi-gene family, which play important physiological roles in crustaceans, involved in several biological processes, including digestion, molting and defense against viruses. In the present study, a chitinase-4 gene (PmChi-4) was cloned from Penaeus monodon by rapid amplification of cDNA ends (RACE). The full length of PmChi-4 cDNA was 2178 bp, including an 1815 bp open reading frame (ORF) which encoded 604 amino acid residues. The predicted PmChi-4 protein was 67.7 kDa and shared 61%-88% identity with the type of Chi-4s from other crustaceans...
January 9, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28079719/feasibility-of-using-hiv-care-continuum-outcomes-to-identify-geographic-areas-for-targeted-hiv-testing
#5
Amanda D Castel, Irene Kuo, Meriam Mikre, Toni Young, Meredith Haddix, Suparna Das, Geoffrey Maugham, Carol Reisen
BACKGROUND: Improved detection and linkage to care of previously undiagnosed HIV infections require innovative approaches to testing. We sought to determine the feasibility of targeted HIV testing in geographic areas, defined by continuum of care parameters, to identify HIV-infected persons needing linkage or engagement in care. METHODS: Using HIV surveillance data from Washington, DC, we identified census tracts that had an HIV prevalence >1% and were either above (higher risk areas-HRAs) or below (lower risk areas-LRAs) the median for 3 indicators: monitored viral load, proportion of persons out of care (OOC), and never in care...
February 1, 2017: Journal of Acquired Immune Deficiency Syndromes: JAIDS
https://www.readbyqxmd.com/read/28076540/self-reported-occupational-accidents-among-brazil-s-adult-population-based-on-data-from-the-2013-national-health-survey
#6
Deborah Carvalho Malta, Sheila Rizzato Stopa, Marta Maria Alves da Silva, Célia Landmann Szwarcwald, Marco da Silveira Franco, Flavia Vinhaes Santos, Elaine Leandro Machado, Carlos Minayo Gómez
Objective: to provide an overview of occupational accidents among Brazil's adult population. Methods: descriptive study using data from the 2013 National Health Survey. Results: A total of 4.9 million workers mentioned having suffered some kind of work-related accident, which is equivalent to 3.4% (CI95% 4.6-5.6) of Brazil's adult population. Prevalence rates were higher among men, young adults aged between 18 and 39 years, and black people and in the North Region of the country...
January 2017: Ciência & Saúde Coletiva
https://www.readbyqxmd.com/read/28071018/effect-of-roasting-degree-on-the-antioxidant-activity-of-different-arabica-coffee-quality-classes
#7
Božana Odžaković, Natalija Džinić, Zoran Kukrić, Slavica Grujić
BACKGROUND: Coffee is one of the most widely consumed beverages in the world, because of its unique sensory properties and physiological properties. Coffee beverages represent a significant source of antioxidants in the consumers' diet and contribute significantly to their daily intake. The aim of this research was to investigate the effect of different roasting degrees on the content of biologically active compounds and antioxidant activity in different quality classes of Arabica coffee...
October 2016: Acta Scientiarum Polonorum. Technologia Alimentaria
https://www.readbyqxmd.com/read/28060018/association-between-engagement-in-care-and-mortality-in-hiv-positive-persons-a-cohort-study
#8
Caroline A Sabin, Alison Howarth, Sophie Jose, Teresa Hill, Vanessa Apea, Steve Morris, Fiona Burns
OBJECTIVE: To assess associations between engagement in-care and future mortality. DESIGN: UK-based observational cohort study. METHODS: HIV-positive participants with >1 visit after 1/1/2000 were identified. Each person-month was classified as being in- or out-of-care based on the dates of the expected and observed next care visits. Cox models investigated associations between mortality and a) the cumulative proportion of months spent in-care (%IC, lagged by 1 year), and b) cumulative %IC prior to antiretroviral treatment (ART) in those attending clinic for >1 year, with adjustment for age, CD4/viral load (VL), year, sex, infection mode, ethnicity, and receipt/type of ART...
January 4, 2017: AIDS
https://www.readbyqxmd.com/read/28054253/women-s-short-term-employment-trajectories-following-birth-patterns-determinants-and-variations-by-race-ethnicity-and-nativity
#9
Yao Lu, Julia Shu-Huah Wang, Wen-Jui Han
Despite a large literature documenting the impact of childbearing on women's wages, less understanding exists of the actual employment trajectories that mothers take and the circumstances surrounding different paths. We use sequence analysis to chart the entire employment trajectory for a diverse sample of U.S. women by race/ethnicity and nativity in the first year following childbirth. Using data from the 1996-2008 panels of the Survey of Income and Program Participation and sample selection models, we find that women employed before childbirth show a high degree of labor market continuity...
January 4, 2017: Demography
https://www.readbyqxmd.com/read/28053574/evaluation-of-different-commercial-feeds-on-grow-out-silver-black-porgy-sparidentex-hasta-valenciennes-for-optimum-growth-performance-fillet-quality-and-cost-of-production
#10
M A Hossain, K M Al-Abdul-Elah, S El-Dakour
The objective of the study was to find a cost-effective feed from three commercial feeds, namely, Arasco (Saudi Arabia), Skretting (Turkey), and Biomar (Greece) for commercially producing silver black porgy (sobaity bream), Sparidentex hasta in Kuwait. For confidentiality, these feeds were randomly given code names, diets 1, 2, and 3, which were known only to the investigating staffs. The trash fish (diet 4) was used as the control. The experiment was conducted for 28 wk with grow-out sobaity bream (210.0 ± 0...
January 2017: Saudi Journal of Biological Sciences
https://www.readbyqxmd.com/read/28052980/metabolites-associated-with-lean-mass-and-adiposity-in-older-black-men
#11
Rachel A Murphy, Steven C Moore, Mary Playdon, Osorio Meirelles, Anne B Newman, Iva Milijkovic, Stephen B Kritchevsky, Ann Schwartz, Bret H Goodpaster, Joshua Sampson, Peggy Cawthon, Eleanor M Simonsick, Robert E Gerszten, Clary B Clish, Tamara B Harris
To identify biomarkers of body mass index, body fat, trunk fat, and appendicular lean mass, nontargeted metabolomics was performed in plasma from 319 black men in the Health, Aging and Body Composition study (median age 72 years, median body mass index 26.8 kg/m(2)). Body mass index was calculated from measured height and weight; percent fat, percent trunk fat, and appendicular lean mass were measured with dual-energy x-ray absorptiometry. Pearson partial correlations between body composition measures and metabolites were adjusted for age, study site, and smoking...
January 3, 2017: Journals of Gerontology. Series A, Biological Sciences and Medical Sciences
https://www.readbyqxmd.com/read/28052878/high-frequency-of-variants-of-candidate-genes-in-black-africans-with-low-renin-resistant-hypertension
#12
Erika S Jones, J David Spence, Adam D Mcintyre, Justus Nondi, Kennedy Gogo, Adeseye Akintunde, Daniel G Hackam, Brian L Rayner
OBJECTIVES: Black subjects tend to retain salt and water, be more sensitive to aldosterone, and have suppression of plasma renin activity. Variants of the renal sodium channel (ENaC, SCNN1B) account for approximately 6% of resistant hypertension (RHT) in Blacks; other candidate genes may be important. METHODS: Six candidate genes associated with low renin-resistant hypertension were sequenced in Black Africans from clinics in Kenya and South Africa. CYP11B2 was sequenced if the aldosterone level was high (primary aldosteronism phenotype); SCNN1B, NEDD4L, GRK4, UMOD, and NPPA genes were sequenced if the aldosterone level was low (Liddle phenotype)...
January 4, 2017: American Journal of Hypertension
https://www.readbyqxmd.com/read/28044247/-plug-and-play-a-novel-technique-utilising-existing-technology-to-get-the-most-out-of-the-robot
#13
Todd G Manning, Daniel Christidis, Jasamine Coles-Black, Shannon McGrath, Jonathan O'Brien, Jason Chuen, Damien Bolton, Nathan Lawrentschuk
We describe a simple technique in which current and freely available technology can be utilised by surgeons while operating the Da Vinci Si/Xi Surgical Robotic systems. This technique allows for a parallel intraoperative display within the surgical console of any desired subject material from a standard computer, utilising commercially available cabling. The ability to view 3D reconstructed images, patient radiology and patient results within the console whilst operating, has the potential to increase operative efficiency, reduce error and aid in adequate resection of tissues...
January 2, 2017: Journal of Robotic Surgery
https://www.readbyqxmd.com/read/28040967/tunable-transportable-spectroradiometer-based-on-an-acousto-optical-tunable-filter-development-and-optical-performance
#14
O Kozlova, A Sadouni, D Truong, S Briaudeau, M Himbert
We describe a high-performance, transportable, versatile spectroradiometer based on an acousto-optical tunable filter (AOTF). The instrument was developed for temperature metrology, namely, to determine the thermodynamic temperature of black bodies above the Ag freezing point (961.78 °C). Its main design feature is the attenuation of the diffraction side lobes (and, thus, out-of-band stray light) thanks to the use of a double-pass configuration. The radiofrequency tuning of the AOTF allows continuous, fine, and rapid wavelength control over a wide spectral range (650 nm-1000 nm)...
December 2016: Review of Scientific Instruments
https://www.readbyqxmd.com/read/28040246/risk-of-mortality-in-patients-with-giant-cell-arteritis-a-systematic-review-and-meta-analysis
#15
REVIEW
Catherine L Hill, Rachel J Black, Johannes C Nossent, Carlee Ruediger, Leanne Nguyen, Jem V Ninan, Susan Lester
BACKGROUND: Previous studies of mortality associated with GCA have shown conflicting results. We conducted a systematic review and meta-analysis to determine the mortality risk in GCA patients compared to the general population. METHODS: We searched for published studies indexed in MEDLINE and EMBASE and the Cochrane database from inception to June 18, 2015 using the terms "giant cell arteritis" and "temporal arteritis" combined with the terms for death, mortality, and survival...
August 25, 2016: Seminars in Arthritis and Rheumatism
https://www.readbyqxmd.com/read/28036043/concentration-of-tea-extracts-by-osmotic-evaporation-optimisation-of-process-parameters-and-effect-on-antioxidant-activity
#16
Marisa P Marques, Vítor D Alves, Isabel M Coelhoso
In this work, the concentration process of three different tea extracts (medicinal Rosil No. 6, Black, and Forest Fruit teas) using the osmotic evaporation (OE) process, was studied. The effect of the OE process on the content of phenolic compounds and antioxidant activity was evaluated. The concentration process was carried out in a hollow-fibre membrane contactor with an effective surface area of 0.54 m². The tea extract was circulated through the shell side of the contactor, while a concentrated osmotic solution (CaCl₂ 5 M) was circulated inside the fibres...
December 28, 2016: Membranes
https://www.readbyqxmd.com/read/28035610/physiological-response-of-polygonum-perfoliatum-l-following-exposure-to-elevated-manganese-concentrations
#17
Shengguo Xue, Jun Wang, Chuan Wu, Song Li, William Hartley, Hao Wu, Feng Zhu, Mengqian Cui
Polygonum perfoliatum L. is a Mn-tolerant plant as considered having the potential to revegetate in manganese mine wasteland. The glasshouse experiments were carried out to evaluate its tolerance and physiological response in different Mn concentrations (5, 500, 1000, 2000, 5000, and 10,000 μmol L(-1)). Absorption bands of P. perfoliatum differed greatly in lipids, proteins, and carbohydrates. With elevated levels of Mn (5-2000 μmol L(-1)), absorbance changed little, which demonstrated that lower Mn concentrations had negligible influence on transport functions...
December 29, 2016: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28034069/association-between-out-of-pocket-costs-race-ethnicity-and-adjuvant-endocrine-therapy-adherence-among-medicare-patients-with-breast-cancer
#18
Albert J Farias, Xianglin L Du
Purpose Previous studies suggest that adherence to adjuvant endocrine therapy (AET) for patients with breast cancer is suboptimal, especially among minorities, and is associated with out-of-pocket medication costs. This study aimed to determine whether there are racial/ethnic differences in 1-year adherence to AET and whether out-of-pocket costs explain the racial/ethnic disparities in adherence. Methods This retrospective cohort study used the SEER-Medicare linked database to identify patients ≥ 65 years of age with hormone receptor-positive breast cancer who were enrolled in Medicare Part D from 2007 to 2009...
January 2017: Journal of Clinical Oncology: Official Journal of the American Society of Clinical Oncology
https://www.readbyqxmd.com/read/28030792/genomic-expression-differences-between-cutaneous-cells-from-red-hair-color-individuals-and-black-hair-color-individuals-based-on-bioinformatic-analysis
#19
Joan Anton Puig-Butille, Pol Gimenez-Xavier, Alessia Visconti, Jérémie Nsengimana, Francisco Garcia-García, Gemma Tell-Marti, Maria José Escamez, Julia Newton-Bishop, Veronique Bataille, Marcela Del Río, Joaquín Dopazo, Mario Falchi, Susana Puig
The MC1R gene plays a crucial role in pigmentation synthesis. Loss-of-function MC1R variants, which impair protein function, are associated with red hair color (RHC) phenotype and increased skin cancer risk. Cultured cutaneous cells bearing loss-of-function MC1R variants show a distinct gene expression profile compared to wild-type MC1R cultured cutaneous cells. We analysed the gene signature associated with RHC co-cultured melanocytes and keratinocytes by Protein-Protein interaction (PPI) network analysis to identify genes related with non-functional MC1R variants...
December 24, 2016: Oncotarget
https://www.readbyqxmd.com/read/28028456/seqenv-linking-sequences-to-environments-through-text-mining
#20
Lucas Sinclair, Umer Z Ijaz, Lars Juhl Jensen, Marco J L Coolen, Cecile Gubry-Rangin, Alica Chroňáková, Anastasis Oulas, Christina Pavloudi, Julia Schnetzer, Aaron Weimann, Ali Ijaz, Alexander Eiler, Christopher Quince, Evangelos Pafilis
Understanding the distribution of taxa and associated traits across different environments is one of the central questions in microbial ecology. High-throughput sequencing (HTS) studies are presently generating huge volumes of data to address this biogeographical topic. However, these studies are often focused on specific environment types or processes leading to the production of individual, unconnected datasets. The large amounts of legacy sequence data with associated metadata that exist can be harnessed to better place the genetic information found in these surveys into a wider environmental context...
2016: PeerJ
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