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https://www.readbyqxmd.com/read/28441769/uva-uvb-and-uvc-light-enhances-the-biosynthesis-of-phenolic-antioxidants-in-fresh-cut-carrot-through-a-synergistic-effect-with-wounding
#1
Bernadeth B Surjadinata, Daniel A Jacobo-Velázquez, Luis Cisneros-Zevallos
Previously, we found that phenolic content and antioxidant capacity (AOX) in carrots increased with wounding intensity. It was also reported that UV radiation may trigger the phenylpropanoid metabolism in plant tissues. Here, we determined the combined effect of wounding intensity and UV radiation on phenolic compounds, AOX, and the phenylalanine ammonia-lyase (PAL) activity of carrots. Accordingly, phenolic content, AOX, and PAL activity increased in cut carrots with the duration of UVC radiation, whereas whole carrots showed no increase...
April 24, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28441760/supplementation-with-a-polyphenol-rich-extract-perfload-%C3%A2-improves-physical-performance-during-high-intensity-exercise-a-randomized-double-blind-crossover-trial
#2
Julien Cases, Cindy Romain, Cristian Marín-Pagán, Linda H Chung, José Miguel Rubio-Pérez, Caroline Laurent, Sylvie Gaillet, Emmanuelle Prost-Camus, Michel Prost, Pedro E Alcaraz
Workout capacity is energy-production driven. To produce peak metabolic power outputs, the organism predominantly relies more on anaerobic metabolism, but this undoubtedly has a negative and limiting impact on muscle function and performance. The aim of the study was to evaluate if an innovative polyphenol-based food supplement, PerfLoad(®), was able to improve metabolic homeostasis and physical performance during high-intensity exercises under anaerobic conditions. The effect of a supplementation has been investigated on fifteen recreationally-active male athletes during a randomized, double-blind and crossover clinical investigation...
April 24, 2017: Nutrients
https://www.readbyqxmd.com/read/28441728/imaging-of-the-finger-vein-and-blood-flow-for-anti-spoofing-authentication-using-a-laser-and-a-mems-scanner
#3
Jaekwon Lee, Seunghwan Moon, Juhun Lim, Min-Joo Gwak, Jae Gwan Kim, Euiheon Chung, Jong-Hyun Lee
A new authentication method employing a laser and a scanner is proposed to improve image contrast of the finger vein and to extract blood flow pattern for liveness detection. A micromirror reflects a laser beam and performs a uniform raster scan. Transmissive vein images were obtained, and compared with those of an LED. Blood flow patterns were also obtained based on speckle images in perfusion and occlusion. Curvature ratios of the finger vein and blood flow intensities were found to be nearly constant, regardless of the vein size, which validated the high repeatability of this scheme for identity authentication with anti-spoofing...
April 22, 2017: Sensors
https://www.readbyqxmd.com/read/28441722/experimental-demonstration-and-circuitry-for-a-very-compact-coil-only-pulse-echo-emat
#4
Dirk Rueter
This experimental study demonstrates for the first time a solid-state circuitry and design for a simple compact copper coil (without an additional bulky permanent magnet or bulky electromagnet) as a contactless electromagnetic acoustic transducer (EMAT) for pulse echo operation at MHz frequencies. A pulsed ultrasound emission into a metallic test object is electromagnetically excited by an intense MHz burst at up to 500 A through the 0.15 mm filaments of the transducer. Immediately thereafter, a smoother and quasi "DC-like" current of 100 A is applied for about 1 ms and allows an echo detection...
April 22, 2017: Sensors
https://www.readbyqxmd.com/read/28441708/dosimetric-comparison-of-three-different-radiotherapy-techniques-in-antrum-located-stomach-cancer
#5
Alparslan Serarslan, Nilgun Ozbek Okumus, Bilge Gursel, Deniz Meydan, Yalcin Dastan, Talat Aksu
Background: The current optimal radiotherapy (RT) planning technique for stomach cancer is controversial. The design of RT for stomach cancer is difficult and differs according to tumor localization. Dosimetric and clinical studies have been performed in patients with different tumor localizations. This may be the main source of inconsistencies in study results. For this reason, we attempted to find the optimal RT technique for patients with stomach cancer in similar locations. Methods: This study was based on the computed tomography datasets of 20 patients with antrum-located stomach cancer...
March 1, 2017: Asian Pacific Journal of Cancer Prevention: APJCP
https://www.readbyqxmd.com/read/28441679/the-drivers-of-discretionary-utilization-clinical-history-versus-physician-supply
#6
Gregory W Ruhnke, Willard G Manning, David T Rubin, David O Meltzer
PURPOSE: Because the effect of physician supply on utilization remains controversial, literature based on non-Medicare populations is sparse, and a physician supply expansion is under way, the potential for physician-induced demand across diverse populations is important to understand. A substantial proportion of gastrointestinal endoscopies may be inappropriate. The authors analyzed the impact of physician supply, practice patterns, and clinical history on esophagogastroduodenoscopy (EGD, defined as discretionary) among patients hospitalized with lower gastrointestinal bleeding (LGIB)...
May 2017: Academic Medicine: Journal of the Association of American Medical Colleges
https://www.readbyqxmd.com/read/28441667/significance-of-user-participation-in-a-hospital-information-system-success-insights-from-a-case-study
#7
Naveed Saleem, Douglas Steel, Gokhan Gercek, Ashish Chandra
User participation in the development of a system is universally prescribed as an effective strategy to ensure the success of the resultant system. However, the existing literature on the merits of user participation only provides equivocal evidence. Various analyses of this literature point out that this equivocal evidence may be due to inconsistent operational measures of the user participation and system success constructs. Planned organizational change and participative decision making, the underlying paradigms of user participation construct, suggest that the development of some information systems may require blending of users' system-related functional expertise and developers' technical expertise to ensure system success...
April 2017: Health Care Manager
https://www.readbyqxmd.com/read/28441620/cognitive-behavioral-therapy-is-effective-in-misophonia-an-open-trial
#8
Arjan E Schröder, Nienke C Vulink, Arnoud J van Loon, Damiaan A Denys
BACKGROUND: Misophonia is a psychiatric disorder in which ordinary human sounds like smacking or chewing provoke intense anger and disgust. Despite the high burden of this condition, to date there is no evidence-based treatment available. In this study we evaluated the efficacy of cognitive behavioral therapy (CBT) and investigated whether clinical or demographic characteristics predicted treatment response. METHODS: Ninety patients with misophonia received eight bi-weekly group CBT sessions...
April 18, 2017: Journal of Affective Disorders
https://www.readbyqxmd.com/read/28441595/modelling-drivers-and-distribution-of-lead-and-zinc-concentrations-in-soils-of-an-urban-catchment-sydney-estuary-australia
#9
L E Johnson, T F A Bishop, G F Birch
The human population is increasing globally and land use is changing to accommodate for this growth. Soils within urban areas require closer attention as the higher population density increases the chance of human exposure to urban contaminants. One such example of an urban area undergoing an increase in population density is Sydney, Australia. The city also possesses a notable history of intense industrial activity. By integrating multiple soil surveys and covariates into a linear mixed model, it was possible to determine the main drivers and map the distribution of lead and zinc concentrations within the Sydney estuary catchment...
April 22, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28441540/supramolecular-interaction-of-methotrexate-with-cucurbit-7-uril-and-analytical-application
#10
Yin-Xia Chang, Xiang-Mei Zhang, Xue-Chao Duan, Fan Liu, Li-Ming Du
The supramolecular interaction between cucurbit[7]uril (CB[7]) as the host and the anti-cancer drug methotrexate (MTX) as the guest was studied using fluorescence spectroscopy, UV-visible absorption spectroscopy, (1)H NMR, 2D NOESY, and theoretical calculations. The experimental results confirmed the formation of 1:2 inclusion complex with CB[7] and indicated a simple and sensitive competitive method for the fluorescence detection of MTX. It was found that the fluorescence intensities of CB[7]-palmatine, CB[7]-berberine and CB[7]-coptisine were quenched linearly upon the addition of MTX...
April 20, 2017: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
https://www.readbyqxmd.com/read/28441478/energy-transfer-kinetics-driven-by-mid-infrared-amplified-spontaneous-emissions-after-two-photon-excitation-from-xe-s0-to-the-xe-6p-1-2-0-state
#11
Shan He, Yafu Guan, Dong Liu, Xusheng Xia, Baodong Gai, Shu Hu, Jingwei Guo, Fengting Sang, Yuqi Jin
In optically pumped laser systems, rare gas lasers (RGLs) are a field of great interest for researchers. Gas laser regimes with metastable Ne, Ar, and Kr atoms have been investigated, while studies of RGLs based on metastable Xe are sparse. In this work, when a strong excitation laser (2.92 mJ/pulse, 7.44*10^5 W/cm2) was applied to excite Xe atoms from the ground state to the 6p[1/2]0 state, an interesting phenomenon emerged: An intense fluorescence of 980 nm (6p[1/2]1-6s[3/2]2) was produced. However, when the energy of excitation laser was decreased to 0...
April 25, 2017: Journal of Physical Chemistry. A
https://www.readbyqxmd.com/read/28441473/assembly-of-macrocycle-dye-derivatives-into-particles-for-fluorescence-and-photoacoustic-applications
#12
Hoang Dung Lu, Tristan L Lim, Shoshana Javitt, Andrew Heinmiller, Robert K Prud'homme
Optical imaging is a rapidly progressing medical technique that can benefit from the development of new and improved optical imaging agents suitable for use in vivo. However, the molecular rules detailing what optical agents can be processed and encapsulated into in vivo presentable forms are not known. We here present the screening of series of highly hydrophobic porphyrin, phthalocyanine, and naphthalocyanine dye macrocycles through a self-assembling Flash NanoPrecipitation process to form a series of water dispersible dye nanoparticles (NPs)...
April 25, 2017: ACS Combinatorial Science
https://www.readbyqxmd.com/read/28441447/tumor-response-assessment-by-mri-following-stereotactic-body-radiation-therapy-for-hepatocellular-carcinoma
#13
Guillaume Oldrini, Andres Huertas, Sophie Renard-Oldrini, Hélène Taste-George, Guillaume Vogin, Valérie Laurent, Julia Salleron, Philippe Henrot
BACKGROUND: To evaluate the MRI features of a tumor response, local control, and predictive factors of local control after stereotactic body radiation therapy (SBRT) for hepatocellular carcinoma (HCC). METHODS: Thirty-five consecutive patients with 48 HCCs who were treated by SBRT were included in this retrospective study. All patients provided written informed consent to be treated by SBRT, and prior to inclusion they authorized use of the treatment data for further studies...
2017: PloS One
https://www.readbyqxmd.com/read/28441437/quantitative-modeling-of-responses-to-chronic-ionizing-radiation-exposure-using-targeted-and-non-targeted-effects
#14
Igor Shuryak
The biological effects of chronic ionizing radiation exposure can be difficult to study, but important to understand in order to protect the health of occupationally-exposed persons and victims of radiological accidents or malicious events. They include targeted effects (TE) caused by ionizations within/close to nuclear DNA, and non-targeted effects (NTE) caused by damage to other cell structures and/or activation of stress-signaling pathways in distant cells. Data on radiation damage in animal populations exposed over multiple generations to wide ranges of dose rates after the Chernobyl nuclear-power-plant accident are very useful for enhancing our understanding of these processes...
2017: PloS One
https://www.readbyqxmd.com/read/28441399/ghgs-and-air-pollutants-embodied-in-china-s-international-trade-temporal-and-spatial-index-decomposition-analysis
#15
Zhengyan Liu, Xianqiang Mao, Peng Song
Temporal index decomposition analysis and spatial index decomposition analysis were applied to understand the driving forces of the emissions embodied in China's exports and net exports during 2002-2011, respectively. The accumulated emissions embodied in exports accounted for approximately 30% of the total emissions in China; although the contribution of the sectoral total emissions intensity (technique effect) declined, the scale effect was largely responsible for the mounting emissions associated with export, and the composition effect played a largely insignificant role...
2017: PloS One
https://www.readbyqxmd.com/read/28441357/investigation-of-the-anti-leishmania-leishmania-infantum-activity-of-some-natural-sesquiterpene-lactones
#16
Imke F Wulsten, Thais A Costa-Silva, Juliana T Mesquita, Marta L Lima, Mariana K Galuppo, Noemi N Taniwaki, Samanta E T Borborema, Fernando B Da Costa, Thomas J Schmidt, Andre G Tempone
Leishmaniases are neglected infectious diseases caused by parasites of the 'protozoan' genus Leishmania. Depending on the parasite species, different clinical forms are known as cutaneous, muco-cutaneous, and the visceral leishmaniasis (VL). VL is particularly fatal and the therapy presents limitations. In the search for new anti-leishmanial hit compounds, seven natural sesquiterpene lactones were evaluated against promastigotes and intracellular amastigotes of Leishmania (Leishmania) infantum, a pathogen causing VL...
April 25, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28441328/a-gradient-field-pulsed-eddy-current-probe-for-evaluation-of-hidden-material-degradation-in-conductive-structures-based-on-lift-off-invariance
#17
Yong Li, Haoqing Jing, Ilham Mukriz Zainal Abidin, Bei Yan
Coated conductive structures are widely adopted in such engineering fields as aerospace, nuclear energy, etc. The hostile and corrosive environment leaves in-service coated conductive structures vulnerable to Hidden Material Degradation (HMD) occurring under the protection coating. It is highly demanded that HMD can be non-intrusively assessed using non-destructive evaluation techniques. In light of the advantages of Gradient-field Pulsed Eddy Current technique (GPEC) over other non-destructive evaluation methods in corrosion evaluation, in this paper the GPEC probe for quantitative evaluation of HMD is intensively investigated...
April 25, 2017: Sensors
https://www.readbyqxmd.com/read/28441323/gold-nanoplates-for-a-localized-surface-plasmon-resonance-based-boric-acid-sensor
#18
Marlia Morsin, Muhamad Mat Salleh, Akrajas Ali Umar, Mohd Zainizan Sahdan
Localized surface plasmon resonance (LSPR) properties of metallic nanostructures, such as gold, are very sensitive to the dielectric environment of the material, which can simply be adjusted by changing its shape and size through modification of the synthesizing process. Thus, these unique properties are very promising, particularly for the detection of various types of chemicals, for example boric acid which is a non-permitted preservative employed in food preparations. For the sensing material, gold (Au) nanoplates with a variety of shapes, i...
April 25, 2017: Sensors
https://www.readbyqxmd.com/read/28441321/a-cost-effective-relative-humidity-sensor-based-on-side-coupling-induction-technology
#19
Yingzi Zhang, Yulong Hou, Wenyi Liu, Huixin Zhang, Yanjun Zhang, Zhidong Zhang, Jing Guo, Jia Liu, Liang Zhang, Qiu-Lin Tan
A intensity-modulated optical fiber relative humidity (RH) sensor based on the side coupling induction technology (SCIT) is presented and experimentally demonstrated. The agarose gel and the twisted macro-bend coupling structure are first combined for RH sensing applications. The refractive index (RI) of the agarose gel increases with the increase of the RH and is in linear proportion from 20 to 80%RH. The side coupling power, which changes directly with the RI of the agarose gel, can strip the source noise from the sensor signal and improve the signal to noise ratio substantially...
April 25, 2017: Sensors
https://www.readbyqxmd.com/read/28441316/hemolysis-following-intraoperative-cell-salvage-replacement-in-a-scoliosis-patient-with-sickle-cell-trait-a-case-report
#20
Daniel You, Alejandro Peiro Garcia, Fabio Ferri-de-Barros, David Parsons
STUDY DESIGN: Case Report. OBJECTIVE: To describe a novel presentation of acute renal failure associated with hemolysis following intraoperative cell salvage (ICS) in a neuromuscular scoliosis patient with sickle cell trait (SCT). SUMMARY OF BACKGROUND DATA: Hemolysis associated acute renal failure following ICS in patients with SCT has not been previously reported. Sickle cell disease is regarded as a relative contraindication for ICS due to the risk of red blood cell sickling in the hypoxic cell saver reservoir...
April 24, 2017: Spine
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