Cross section data sets for electron collisions with H2, O2, CO, CO2, N2O and H2O

Anzai, K.,Kato, H.,Hoshino, M.,Tanaka, H.,Itikawa, Y.,Campbell, L.,Brunger, M. J.,Buckman, S. J.,Cho, H.,Blanco, F.,Garcia, G.,Limã,o-Vieira, P.,Ingó,lfsson, O. Springer-Verlag 2012 European Physical Journal D Vol.66 No.2

Correlation between short-term blood pressure variability parameters with mobil-O-graph pulse wave velocity

Marco Antonio Vieira Silva,Luiz Antonio Pertilli Rodrigues Resende,Mateus Marchiori Vieira,Camila Blanco Ferreira Jajah,Lucas Alves Berzotti,Nicole Cristine Rambourg,Ian Dias de Souza Pierson,João Luc 대한고혈압학회 2022 Clinical Hypertension Vol.28 No.-

Blood pressure variability (BPV) and arterial stiffness show an association with increased cardiovascular events. Evidences demonstrated an association between higher short-term systolic BPV and stiffer arteries. There is no previous study assessed the correlation between BPV and arterial stiffness measured by a Mobil-O-Graph device. We issued to evaluate the correlation between short-term BPV parameters and Mobil-O-Graph pulse wave velocity (PWV) among suspected hypertensive individuals under treatment.Mobil-O-Graph device estimated arterial stiffness (oscillometric PWV [oPWV]) in 649 individuals, and they recorded 24-h ambulatory BP; 428 had suspected hypertension and 221 under treatment. We analyzed the correlation between oPWV and measures of BPV: SD of 24 h BP (24-h SD), SD of daytime BP (daytime-SD), and SD of nighttime BP (nighttime-SD), weighted SD of 24-h BP (wSD), coefficient of variation of 24-h BP (CV 24-h) and average real variability (ARV). Oscillometric PWV showed a positive correlation with all systolic BPV measures, in both groups. Among suspected hypertensives: 24-h SD, r = 0.30; SD daytime-SD, r = 0.34; nighttime-SD, r = 0.16; wSD, r = 0.30; CV 24-h, r = 0.24; ARV, r = 0.22. In the treated individuals: 24-h SD, r = 0.46; daytime-SD, r = 0.47; nighttime-SD, r = 0.35; wSD, r = 0.50; CV 24-h, r = 0.43; ARV, r = 0.37, all P < 0.001. Diastolic BPV demonstrated association with some measures of BPV. In suspected hypertensive group: nighttime-SD, r = 0.13; wSD, r = 0.10, both P < 0.001. And in treated individuals: daytime-SD, r = 0.23; wSD, r = 0.22; CV 24-h, r = 0.19 (all P < 0.001), ARV, r = 0.15 ( P < 0.05). Systolic daytime-SD in suspected and diastolic CV 24-h in treated group independently predicted oPWV. We observed a positive and independent correlation between Mobil-O-Graph pulse wave velocity and BPV measures, strong to systolic BPV and weak to diastolic BP.

Antifungal Activity of Silver Salts of Keggin-Type Heteropolyacids Against Sporothrix spp.

Luciana Da Silva Mathias,João Carlos De Aquino Almeida,Luis César Passoni,Cristiani Miranda David Gossani,Gabriel Bonan Taveira,Valdirene Moreira Gomes,Olney Vieira-Da-Motta 한국미생물·생명공학회 2020 Journal of microbiology and biotechnology Vol.30 No.4

Sporotrichosis is a chronic and subacute mycosis causing epidemiological outbreaks involving sick cats and humans in southeastern Brazil. The systemic disease prevails in cats and in humans, with the symptoms restricted to the skin of immunocompetent individuals. Under these conditions, the prolonged treatment of animals and cases of recurrence justify the discovery of new treatments for sporotrichosis. This work addresses the antifungal activity of silver salts of Keggin-type heteropolyacid salts (Ag-HPA salts) such as Ag3[PW12O40], Ag6[SiW10V2O40], Ag4[SiW12O40] and Ag3[PMo12O40] and interactions with the antifungal drugs itraconazole (ITC), terbinafine (TBF) and amphotericin B (AMB) on the yeast and mycelia forms of Sporothrix spp. Sporothrix spp. yeast cells were susceptible to Ag-HPA salts at minimum inhibitory concentration (MIC) values ranging from 8 to 128 μg/ml. Interactions between Ag3[PW12O40] and Ag3[PMo12O40] with itraconazole and amphotericin B resulted in higher antifungal activity with a reduction in growth and melanization. Treated cells showed changes in cell membrane integrity, vacuolization, cytoplasm disorder, and membrane detachment. Promising antifungal activity for treating sporotrichosis was observed for the Ag-HPA salts Ag3[PMo12O40] and Ag3[PW12O40], which have a low cost, high yield and activity at low concentrations. However, further evaluation of in vivo tests is still required.

Commercial synthetic hydrotalcite as an adsorbent nanomaterial for removal of bacteria from contaminated water

Anastasiya V. Sidarenka,Sviatlana I. Leanovich,Emiliya I. Kalamiyets,Daniel E.L. Vieira,João P.V. Cardoso,João Tedim,Andrei N. Salak 대한환경공학회 2023 Environmental Engineering Research Vol.28 No.3

Layered double hydroxides (LDHs) are regarded as potential adsorbents for water treatment from a wide range of pollutants. However, there are only a few studies concerning application of LDHs for elimination of microorganisms from aquatic systems. In this work, experiments were conducted to investigate the efficiency of commercial synthetic hydrotalcite Mg6Al2(CO3)(OH)16·4H2O as an adsorbent for water purification from fecal indicator bacteria Escherichia coli BIM B-378 and Enterococcus faecalis BIM B-1530. Our findings indicate that exposure for 4 h to hydrotalcite (5 g/L) in suspension resulted in the removal of about 40% of coliforms and 25% of enterococci from water, at a high bacterial load (2×1010 CFU/L), and the removal efficiency of E. coli and E. faecalis did not significantly change when both bacteria were present in water. In addition, the percentage of removed bacteria increased with increasing of hydrotalcite concentration in the suspension (0.5 to 10 g/L), contact time (1–7 h) and decrease of pH (5.5), and decreased at low incubation temperature (16°C). Finally, hydrotalcite did not exhibit bactericidal activity and retention of bacteria was found to be reversible. Therefore, our findings suggest that commercial synthetic hydrotalcite could be potentially used in technologies of water treatment from bacterial contamination.

An effective locally-defined time marching procedure for structural dynamics

Tales Vieira Sofiste,Delfim Soares Jr,Webe João Mansur 국제구조공학회 2020 Structural Engineering and Mechanics, An Int'l Jou Vol.73 No.1

The present work describes a new time marching procedure for structural dynamics analyses. In this novel technique, time integration parameters are automatically evaluated according to the properties of the model. Such parameters are locally defined, allowing the user to input a numerical dissipation property for each element, which defines the amount of numerical dissipation to be introduced. Since the integration parameters are locally defined as a function of the structural element itself, the time marching technique adapts according to the model, providing enhanced accuracy. The new methodology is based on displacement-velocity relations and no computation of accelerations is required. Furthermore, the method is second order accurate, it has guaranteed stability, it is truly self-starting and it allows highly controllable algorithm dissipation in the higher modes. Numerical results are presented and compared to those provided by the Newmark and the Bathe methods, illustrating the good performance of the new time marching procedure.

RC deep beams with unconventional geometries: Experimental and numerical analyses

Agno Alves Vieira,Guilherme Sales S.A. Melo,Antonio C.O. Miranda 사단법인 한국계산역학회 2020 Computers and Concrete, An International Journal Vol.26 No.4

This work presents numerical and experimental analyses of the behavior of reinforced-concrete deep beams with unconventional geometries. The main goal here is to experimentally and numerically study these geometries to find possible new behaviors due to the material nonlinearity of reinforced concrete with complex geometries. Usually, unconventional geometries result from innovative designs; in general, studies of reinforced concrete structures are performed only on conventional members such as beams, columns, and labs. To achieve the goal, four reinforced-concrete deep beams with geometries not addressed in the literature were tested. The models were numerically analyzed with the Adaptive Micro Truss Model (AMTM), which is the proposed method, to address new geometries. This work also studied the main parameters of the constitutive model of concrete based on a statistical analysis of the finite element (FE) results. To estimate the ultimate loads, FE simulations were performed using the Monte Carlo method. Based on the obtained ultimate loads, a probabilistic distribution was created, and the final ultimate loads were computed.

UV-C Irradiation-induced Crosslinking of PVP on PES/CO Knitted Fabric: Textile Properties and Surface Evaluation

Giovana A. Vieira,Ana P. Wünsch Boitt,Ana Paula Serafini Immich,Antônio Augusto Ulson de Souza,Ivonete O. Barcellos 한국섬유공학회 2020 Fibers and polymers Vol.21 No.10

Knitted fabrics are widely used in the textile and garment industry. However, dimensional change (DC) and pillingcan occur during production and also after use. To reduce these undesirable effects, a polymeric coating with poly(N-vinyl-2-pyrrolidone) (PVP) and crosslinking via UV-C irradiation was performed on a 50:50 % polyester/cotton (PES/CO) knittedfabric. The influence of the crosslinking process was evaluated through DC measurements (in the direction of the courses andwales), determination of the degree of pilling, water repellency and bursting strength. Infrared Fourier transformspectroscopy and scanning electron microscopy were used to evaluate the surface of the fabric. The results indicate that thePVP crosslinked with UV-C irradiation on the PES/CO surface decreased the degree of pilling (grade 4 for the coated knittedfabric compared with grade 1 for the uncoated knitted fabric) and the DC, without influencing the hydrophilicity and burstingstrength.

Analgesic Effects Elicited by Neuroactive Mediators Injected into the ST 36 Acupuncture Point on Inflammatory and Neuropathic Pain in Mice

Ja´dina S. Vieira,Je´ssica A. Toreti,Ravena C. de Carvalho,Joa˜o E. de Arau´jo,Marcelo L. Silva,Josie R.T. Silva 사단법인약침학회 2018 Journal of Acupuncture & Meridian Studies Vol.11 No.5

The present study evaluates whether the injection of serotonin, acetylcholine, glutamate, bradykinin, histamine, or substance P (SP) into the Zusanli (Stomach 36, ST 36) acupoint can also produce the acupuncture-induced antinociceptive effect on inflammatory or neuropathic pain. In this in vivo experimental study, a total of 450 male Swiss mice were used. Mice were injected with saline or complete Freund's adjuvant (CFA) or subjected to sham or chronic constriction injury (CCI) surgery. After the establishment of the inflammatory (4 hours) or the neuropathic pain (3 days), the animals (n = 6) received manual acupuncture, sham acupuncture, or injection of saline, serotonin, acetylcholine, glutamate, bradykinin, histamine, or SP into the ST 36 and were evaluated for up to 24 hours. Mechanical threshold was evaluated, and the L4-L6 dorsal root ganglion was used for analysis of the transient receptor potential vanilloid type 1 overexpression. The mice from both the CFA and CCI models treated with manual acupuncture had significant increases in the thresholds for more than 24 hours. Sham acupuncture stimulation did not change the thresholds. In the mice injected with each of the mediators, the thresholds were significantly increased for all times in both the CFA and CCI models. Transient receptor potential vanilloid type 1 overexpression in CFA and CCI mice was reduced at all times by injection of serotonin, acetylcholine, or SP but not by injection of glutamate, histamine, or bradykinin. Our data suggest that the neuroactive mediators released by acupuncture-induced tissue injury may contribute to acupuncture-induced analgesia.

Laser dynamics in transversely inhomogeneous plasma and its relevance to wakefield acceleration

Pathak, V B,Vieira, J,Silva, L O,Nam, Chang Hee IOP 2018 Plasma physics and controlled fusion Vol.60 No.5

<P>We present full set of coupled equations describing the weakly relativistic dynamics of a laser in a plasma with transverse inhomogeneity. We apply variational principle approach to obtain these coupled equations governing laser spot-size, transverse wavenumber, curvature, transverse centroid, etc. We observe that such plasma inhomogeneity can lead to stronger self-focusing. We further discuss the guiding conditions of laser in parabolic plasma channels. With the help of multi-dimensional particle in cell simulations the study is extended to the blowout regime of laser wakefield acceleration to show laser as well as self-injected electron bunch steering in plasma to generate unconventional particle trajectories. Our simulation results demonstrate that such transverse inhomogeneities due to asymmetric self focusing lead to asymmetric bubble excitation, thus inducing off-axis self-injection.</P>

Eco-Friendly Manufacturing of Nano-TiO2 Coated Cotton Textile with Multifunctional Properties

Mirele Horsth de Paiva Teixeira,Luís Antônio Lourenço,Wagner Artifon,Celso Junior de Castro Vieira,Sergio Yesid Gómez González,Dachamir Hotza 한국섬유공학회 2020 Fibers and polymers Vol.21 No.1

In this work, multifunctional cotton fabrics were developed by immobilizing TiO2 nanoparticles (TiO2-NPs) usingan eco-friendly bath through a highly-scalable technique. The effects of TiO2-NPs, cross-linking agent, catalyst and curingtemperatures were assessed by analysis of variance and surface response methodology. The results disclose an excellentperformance of treated textiles for various applications: flame-retardant (char content enhanced by 1000 %), photocatalyticdecontamination (>90 % of contaminant abatement and feasibility for multiple reuses), self-cleaning of intense stains (up to80 % of stain vanishing), bacterial inhibition without TiO2 UV-activation (≈25 % of bacteria growth reduction). Moreover,those properties were durable for at least five domestic laundering cycles.