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https://www.readbyqxmd.com/read/28445394/spectroscopic-detection-of-glyphosate-in-water-assisted-by-laser-ablated-silver-nanoparticles
#1
Rafael Eleodoro De Góes, Marcia Muller, José Luís Fabris
Glyphosate is one of the most widely used herbicides in the world. Its safety for both human health and aquatic biomes is a subject of wide debate. There are limits to glyphosate's presence in bodies of water, and it is usually detected through complex analytical procedures. In this work, the presence of glyphosate is detected directly through optical interrogation of aqueous solution. For this purpose, silver nanoparticles were produced by pulsed laser ablation in liquids. Limits of detection of 0.9 mg/L and 3...
April 26, 2017: Sensors
https://www.readbyqxmd.com/read/28437996/high-contrast-switchability-of-vo-sub-2-sub-based-metamaterial-absorbers-with-ito-ground-plane
#2
Jitendra K Pradhan, S Anantha Ramakrishna, Bharathi Rajeswaran, Arun M Umarji, Venu Gopal Achanta, Amit K Agarwal, Amitava Ghosh
A metamaterial consisting of an array of gold micro-disks, separated from a ground plane of indium tin oxide (ITO) by a thin film of vanadium dioxide (VO<sub>2</sub>), behaves as a perfect absorber at infrared (IR) frequencies at room temperature. This metamaterial, which is transparent to visible light, can be switched to a highly reflecting state for IR light by heating the metamaterial to temperatures larger than the metal-insulator phase transition temperature 68°C of VO<sub>2</sub>...
April 17, 2017: Optics Express
https://www.readbyqxmd.com/read/28437993/integrated-optical-force-sensors-using-focusing-photonic-crystal-arrays
#3
Jingkun Guo, Richard A Norte, S Gröblacher
Mechanical oscillators are at the heart of many sensor applications. Recently several groups have developed oscillators that are probed optically, fabricated from high-stress silicon nitride films. They exhibit outstanding force sensitivities of a few aN/Hz<sup>1/2</sup> and can also be made highly reflective, for efficient detection. The optical read-out usually requires complex experimental setups, including positioning stages and bulky cavities, making them impractical for real applications. In this paper we propose a novel way of building fully integrated all-optical force sensors based on low-loss silicon nitride mechanical resonators with a photonic crystal reflector...
April 17, 2017: Optics Express
https://www.readbyqxmd.com/read/28437979/30-hz-relative-linewidth-watt-output-power-1-65-%C3%A2%C2%B5m-continuous-wave-singly-resonant-optical-parametric-oscillator
#4
Aliou Ly, Christophe Siour, Fabien Bretenaker
We built a 1-watt cw singly resonant optical parametric oscillator operating at an idler wavelength of 1.65 µm for application to quantum interfaces. The non resonant idler is frequency stabilized by side-fringe locking on a relatively high-finesse Fabry-Perot cavity, and the influence of intensity noise is carefully analyzed. A relative linewidth down to the sub-kHz level (about 30 Hz over 2 s) is achieved. A very good long term stability is obtained for both frequency and intensity.
April 17, 2017: Optics Express
https://www.readbyqxmd.com/read/28437906/temperature-insensitive-fiber-optic-fabry-perot-interferometer-based-on-special-air-cavity-for-transverse-load-and-strain-measurements
#5
Yongfeng Wu, Yundong Zhang, Jing Wu, Ping Yuan
We experimentally demonstrate transverse load and strain sensing based on a fiber optic Fabry-Perot interferometer (FPI) with special air cavity, which was created by fusion splicing single mode fiber (SMF), hollow core fiber (HCF) and several electrical arc discharges. The cavity height of this structure is higher than the cladding diameter of SMF so that it can sense transverse load with high sensitivity. The transverse load sensitivity of this air cavity FPI sensor is 1.31 nm∕N and about 5 times more sensitive compared to the current fiber tip interferometer (0...
April 17, 2017: Optics Express
https://www.readbyqxmd.com/read/28435955/high-resolution-ftir-spectroscopy-of-trisulfane-hsssh-a-candidate-for-detecting-parity-violation-in-chiral-molecules
#6
S Albert, I Bolotova, Z Chen, C Fábri, M Quack, G Seyfang, D Zindel
We report the first successful high-resolution analyses of the Fourier transform infrared (FTIR) spectrum of trisulfane. A band centered at 861.0292 cm(-1) can be assigned unambiguously to the chiral trans conformer by means of ground state combination differences in comparison with known rotational spectra. A second band near 864.698 cm(-1) is tentatively assigned to the cis conformer by comparison with theory. The results are discussed in relation to their importance for experimental attempts to measure the parity violating energy difference ΔpvE between the ground states of enantiomers of chiral molecules...
April 24, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28434007/5th-update-on-fabry-nephropathy-biomarkers-progression-and-treatment-opportunities-april-25-27-2017-mexico-city-mexico-abstracts
#7
(no author information available yet)
No abstract text is available yet for this article.
April 22, 2017: Nephron
https://www.readbyqxmd.com/read/28433021/to-kink-or-not-a-search-for-long-chain-cumulenones-using-microwave-spectral-taxonomy
#8
Michael C McCarthy, Luyao Zou, Marie-Aline Martin-Drumel
A systematic search for carbon-chain cumulenones beyond H2C4O has been undertaken using microwave spectral taxonomy in combination with a pulsed jet discharge source. No evidence was found for the C2υ isomer of H2C5O or its longer derivatives, but HC(O)C4H, the longer variant of propynal, HC(O)CCH, was identified instead. Its rotational and leading centrifugal distortion constants have been derived to high accuracy from detection of both a- and b-type lines; those below 40 GHz were measured using a Fabry-Perot cavity, while lines between 40 and 72 GHz were recorded by double resonance techniques...
April 21, 2017: Journal of Chemical Physics
https://www.readbyqxmd.com/read/28430823/modulation-the-alternative-splicing-of-gla-ivs4-919g-a-in-fabry-disease
#9
Wen-Hsin Chang, Dau-Ming Niu, Chi-Yu Lu, Shyr-Yi Lin, Ta-Chih Liu, Jan-Gowth Chang
While a base substitution in intron 4 of GLA (IVS4+919G>A) that causes aberrant alternative splicing resulting in Fabry disease has been reported, its molecular mechanism remains unclear. Here we reported that upon IVS4+919G>A transversion, H3K36me3 was enriched across the alternatively spliced region. PSIP1, an adapter of H3K36me3, together with Hsp70 and NONO were recruited and formed a complex with SF2/ASF and SRp20, which further promoted GLA splicing. Amiloride, a splicing regulator in cancer cells, could reverse aberrant histone modification patterns and disrupt the association of splicing complex with GLA...
2017: PloS One
https://www.readbyqxmd.com/read/28430264/optimization-of-excitation-of-fiber-fabry-perot-tunable-filters-used-in-swept-lasers-using-a-phase-correction-method
#10
Mohammad R N Avanaki, Adrian Bradu, Adrian Podoleanu
In this paper we investigate a phase-correction method for compensation of the nonlinearity of conventional wavelength-swept laser sources based on a fiber Fabry-Perot tunable filter as a wavelength selective element. A triangular waveform signal is commonly used to drive the filter. We, however, extract the zero crossings from the interferograms and modify the shape of the triangular signal accordingly. This algorithm was tested for different values of the optical path length difference in the interferometer setup...
April 20, 2017: Applied Optics
https://www.readbyqxmd.com/read/28429522/globotriaosylsphingosine-induces-oxidative-dna-damage-in-cultured-kidney-cells
#11
Giovana Brondani Biancini, Ana Moira Morás, Luiza Steffens Reinhardt, Franciele Faccio Busatto, Nathalia Denise de Moura Sperotto, Jenifer Saffi, Dinara Jaqueline Moura, Roberto Giugliani, Carmen Regla Vargas
Fabry disease (FD) is a lysosomal disorder caused by mutations leading to a deficient activity α-galactosidase A with progressive and systemic accumulation of its substrates. Substrates deposition is related to tissue damage in FD, but the underlying molecular mechanisms remain not completely understood. DNA damage has been associated with disease progression in chronic diseases and was recently described in high levels in Fabry patients. Once renal complications are major morbidity causes in FD, we investigated the effects of the latest biomarker for FD - globotriaosylsphingosine (lyso-Gb3) in a cultured renal lineage - human embryonic kidney cells (HEK-293 T) - on DNA damage...
June 2017: Nephrology
https://www.readbyqxmd.com/read/28427383/is-ischemia-the-only-factor-predicting-cardiovascular-outcomes-in-all-diabetes-mellitus-patients
#12
REVIEW
Mark W Kennedy, Enrico Fabris, Harry Suryapranata, Elvin Kedhi
Diabetes mellitus (DM) is associated with an excess in cardiovascular morbidity and mortality, and is characterized by increased rates of coronary artery disease. Furthermore, once atherosclerosis is established, this is associated with an increased extent, complexity and a more rapid progression than seen in non-DM patients. Ischemia is the single most important predictor of future hard cardiac events and ischemia correction remains the cornerstone of current revascularization strategies. However recent data suggests that, in DM patients, coronary atherosclerosis despite the absence of ischemia, detected by either invasive or non-invasive methods, may not be associated with the same low risk of future cardiac events as seen in non-DM patients...
April 20, 2017: Cardiovascular Diabetology
https://www.readbyqxmd.com/read/28420744/the-transcription-factor-bzip14-regulates-the-tca-cycle-in-the-diatom-phaeodactylum-tricornutum
#13
Michiel Matthijs, Michele Fabris, Toshihiro Obata, Imogen Foubert, José Manuel Franco-Zorrilla, Roberto Solano, Alisdair R Fernie, Wim Vyverman, Alain Goossens
Diatoms are amongst the most important marine microalgae in terms of biomass, but little is known concerning the molecular mechanisms that regulate their versatile metabolism. Here, the pennate diatom Phaeodactylum tricornutum was studied at the metabolite and transcriptome level during nitrogen starvation and following imposition of three other stresses that impede growth. The coordinated upregulation of the tricarboxylic acid (TCA) cycle during the nitrogen stress response was the most striking observation...
April 18, 2017: EMBO Journal
https://www.readbyqxmd.com/read/28420083/a-theoretical-study-and-numerical-simulation-of-a-quasi-distributed-sensor-based-on-the-low-finesse-fabry-perot-interferometer-frequency-division-multiplexing
#14
José Trinidad Guillen Bonilla, Alex Guillen Bonilla, Verónica M Rodríguez Betancourtt, Héctor Guillen Bonilla, Antonio Casillas Zamora
The application of the sensor optical fibers in the areas of scientific instrumentation and industrial instrumentation is very attractive due to its numerous advantages. In the industry of civil engineering for example, quasi-distributed sensors made with optical fiber are used for reliable strain and temperature measurements. Here, a quasi-distributed sensor in the frequency domain is discussed. The sensor consists of a series of low-finesse Fabry-Perot interferometers where each Fabry-Perot interferometer acts as a local sensor...
April 14, 2017: Sensors
https://www.readbyqxmd.com/read/28420071/pleuropulmonary-involvement-in-patients-with-systemic-lupus-erythematosus-from-a-latin-american-inception-cohort-gladel
#15
M J Haye Salinas, F Caeiro, V Saurit, A Alvarellos, D Wojdyla, H R Scherbarth, A C de O E Silva, J C Tavares Brenol, L T Lavras Costallat, O J Neira, A Iglesias Gamarra, G Vásquez, G A Reyes Llerena, L A Barile-Fabris, L H Silveira, M J Sauza Del Pozo, E M Acevedo Vásquez, J L Alfaro Lozano, M H Esteva Spinetti, G S Alarcón, B A Pons-Estel
Objectives The objectives of this study were to examine the demographic and clinical features associated with the occurrence of pleuropulmonary manifestations, the predictive factors of their occurrence and their impact on mortality in systemic lupus erythematosus (SLE) patients. Materials and methods The association of pleuropulmonary manifestations with demographic and clinical features, the predictive factors of their occurrence and their impact on mortality were examined in GLADEL patients by appropriate univariable and multivariable analyses...
January 1, 2017: Lupus
https://www.readbyqxmd.com/read/28417336/treatment-of-depression-in-adults-with-fabry-disease
#16
Nadia Ali, Scott Gillespie, Dawn Laney
Fabry disease (FD) is a genetic X-linked, multisystemic, progressive lysosomal storage disorder (LSD). Depression has emerged as a disease complication, with prevalence estimates ranging from 15 to 62%. This is a pilot study examining the effects of psychological counseling for depression in FD on depression, adaptive functioning (AF), quality of life (QOL), and subjective pain experience. Telecounseling was also piloted, as it has beneficial effects in other chronic diseases which make in-person counseling problematic...
April 18, 2017: JIMD Reports
https://www.readbyqxmd.com/read/28414231/organic-phosphorescence-nanowire-lasers
#17
Zhenyi Yu, Yishi Wu, Lu Xiao, Jianwei Chen, Qing Liao, Jiannian Yao, Hongbing Fu
Organic solid-state lasers (OSSLs) based on singlet fluorescence have merited intensive study as an important class of light sources. Although the use of triplet phosphors has led to 100% internal quantum efficiency in organic light-emitting diodes (OLEDs), stumbling blocks in triplet lasing include generally forbidden intersystem crossing (ISC) and a low quantum yield of phosphorescence (ΦP). Here, we reported the first triplet-phosphorescence OSSL from a nanowire microcavity of a sulfide-substituted difluoroboron compound...
April 25, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/28413011/-nurse-coordinator-and-doctor-coordinator-in-a-gerontology-network
#18
Anne-Laure Couderc, Corinne Gérard, Stéphane Fabriès, Jean-Claude Pical, Patrick Villani
The Marseille gerontology network consists of a geriatric team providing support in patients' homes across the Marseille urban area. It forms an integral part of the geriatric care sector ensuring that elderly people living at home benefit from a global medical-psychological-social assessment. The aim is to enable elderly people to continue living and receiving care in their home.
March 2017: Soins. Gérontologie
https://www.readbyqxmd.com/read/28411095/acute-hepatitis-e-virus-infection-in-a-migrant-population-in-north-east-italy-a-retrospective-analysis
#19
Lucia Bradanini, Daniel Youkee, Paolo Fabris, Luisa Romanò, Enrico Brunetti, Maria Teresa Giordani
OBJECTIVE: To study the epidemiological and clinical features of Hepatitis E Virus (HEV) infection in a migrant population. METHODS: We performed a retrospective chart review, identifying a cohort of 21 symptomatic patients of migrant origin with confirmed HEV infection admitted in the period between January 1995-November 2014. RESULTS: 20 (95%) patients came from South Asian countries highly endemic for HEV, all positive for HEV genotype 1...
April 12, 2017: Travel Medicine and Infectious Disease
https://www.readbyqxmd.com/read/28410446/self-reported-long-term-benefits-of-mindfulness-based-cognitive-therapy-in-patients-with-bipolar-disorder
#20
Béatrice Weber, Loretta Sala, Marianne Gex-Fabry, Aurélie Docteur, Philip Gorwood, Paolo Cordera, Guido Bondolfi, Françoise Jermann, Jean-Michel Aubry, Christine Mirabel-Sarron
OBJECTIVES: This study focused on patients with bipolar disorder (BD), several years after their participation in mindfulness-based cognitive therapy (MBCT). It aimed at documenting sustained mindfulness practice, perceived long-term benefit from the program, and changes regarded as direct consequences of the intervention. DESIGN: This cross-sectional survey took place at least 2 years after MBCT for 70.4% of participants. LOCATION: It was conducted in two specialized outpatient units for BDs that are part of the Geneva University Hospitals (Switzerland) and the Sainte-Anne Hospital in Paris (France)...
April 14, 2017: Journal of Alternative and Complementary Medicine: Research on Paradigm, Practice, and Policy
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