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https://www.readbyqxmd.com/read/28434879/sonoluminescence-and-acoustic-emission-spectra-at-different-stages-of-cavitation-zone-development
#1
N V Dezhkunov, A Francescutto, L Serpe, R Canaparo, G Cravotto
The way in which a cavitation zone develops in a focused pulsed ultrasound field is studied in this work. Sonoluminescence (SL), total hydrophone output and cavitation noise spectra have been recorded across a gradual, smooth increase in applied voltage. It is shown that the cavitation zone passes through a number of stages of evolution, according to increasing ultrasound intensity, decreasing pulse period and increasing ultrasound pulse duration. Sonoluminescence is absent in the first phase and the hydrophone output spectra consists of a main line with two or three harmonics whose intensity is much lower than that of the main (fundamental) line...
April 6, 2017: Ultrasonics Sonochemistry
https://www.readbyqxmd.com/read/28434725/effects-of-breed-feeding-system-and-lactation-stage-on-milk-fat-characteristics-and-spontaneous-lipolysis-in-dairy-cows
#2
E Vanbergue, L Delaby, J L Peyraud, S Colette, Y Gallard, C Hurtaud
Spontaneous lipolysis (SL) is an enzymatic reaction which leads to a release of free fatty acids that can modify technological and sensory properties of milk and milk products. However, few studies have been done to assess the effect of feeding systems (FS) and breed on SL. Most of them were conducted in the 1980s and are not fully representative of cattle today. No previous study investigated the effect of cow breed at the whole-lactation scale. Thus, a trial was carried out to study the effects of 2 FS (high- and low-input FS) with 2 breeds [Holstein (HO) and Normande (NO)] during 1 entire lactation...
April 20, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28430511/anti-de-sitter-particles-and-manifest-super-isometries
#3
Alex S Arvanitakis, Alec E Barns-Graham, Paul K Townsend
Starting from the classical action for a spin-zero particle in a D-dimensional anti-de Sitter (AdS) spacetime, we recover the Breitenlohner-Freedman bound by quantization. For D=4, 5, 7 and using an Sl(2;K) spinor notation for K=R,C,H, we find a bitwistor form of the action for which the AdS isometry group is linearly realized, although only for zero mass when D=4, 7 in agreement with previous constructions. For zero mass and D=4 the conformal isometry group is linearly realized. We extend these results to the superparticle in the maximally supersymmetric "AdS×S" string or M-theory vacua, showing that quantization yields a 128+128 component supermultiplet...
April 7, 2017: Physical Review Letters
https://www.readbyqxmd.com/read/28427694/gait-pattern-in-patients-with-different-multiple-sclerosis-phenotypes
#4
Irena Dujmovic, Sasa Radovanovic, Vanja Martinovic, Jelena Dackovic, Gorica Maric, Sarlota Mesaros, Tatjana Pekmezovic, Vladimir Kostic, Jelena Drulovic
BACKGROUND: Gait pattern is frequently impaired in multiple sclerosis (MS), however gait characteristics in patients with different MS phenotypes have not been fully elucidated. METHODS: We analyzed spatio-temporal gait pattern characteristics in patients with relapsing-remitting (RR, n=52) and primary-progressive (PP, n=18) MS in comparison with age-matched healthy controls (HC, n=40). All subjects performed a standardized simple walking task, a dual motor- motor task, a dual motor-mental task, and a triple combined motor-mental task at a GAITRite electronic walkway of 5...
April 2017: Multiple Sclerosis and related Disorders
https://www.readbyqxmd.com/read/28423739/sialyllactose-suppresses-angiogenesis-by-inhibiting-vegfr-2-activation-and-tumor-progression
#5
Tae-Wook Chung, Eun-Young Kim, Seok-Jo Kim, Hee-Jung Choi, Se Bok Jang, Keuk-Jun Kim, Sun-Hyung Ha, Fukushi Abekura, Choong-Hwan Kwak, Cheorl-Ho Kim, Ki-Tae Ha
The oligosaccharides in human milk have various biological functions. However, the molecular mechanism(s) underlying the anti-angiogenic action of sialylated human milk oligosaccharides (HMOs) are still unclear. Here, we show that siallylactose (SL) found in human milk can inhibit the activation of vascular endothelial growth factor (VEGF)-mediated VEGF receptor-2 (VEGFR-2) by binding to its VEGF binding site (second and third IgG-like domains), thus blocking downstream signal activation. SL also inhibits growth of VEGF-stimulated endothelial cells...
March 14, 2017: Oncotarget
https://www.readbyqxmd.com/read/28422820/comparison-of-the-etview-single-lumen-and-macintosh-laryngoscopes-for-endotracheal-intubation-in-an-airway-manikin-with-immobilized-cervical-spine-by-novice-paramedics-a-randomized-crossover-manikin-trial
#6
Pawel Gawlowski, Jacek Smereka, Marcin Madziala, Barak Cohen, Kurt Ruetzler, Lukasz Szarpak
CONTEXT: Management of the airway of a trauma victim is considered challenging. Various approaches have been described to achieve airway control in this setup; many of them include video-assited viewing of the larynx during intubation. ETView Single Lumen (SL) is a novice single-use endotracheal tube equiped with a video camera and a light source at its distal tip. Its use was previously described in seeral clinical and training setups. OBJECTIVE: The aim was to evaluate the efficacy of the VivaSight SL compared with classic direct laryngoscopy performed with a Macintosh blade in a manikin-simulated trauma setup presenting various degrees of airway challenge when performed by inexperienced physicians...
April 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28421782/lactancia-materna-para-control-del-dolor-agudo-en-lactantes-ensayo-cl%C3%A3-nico-controlado-ciego-simple
#7
Jessie Nallely Zurita-Cruz, Rodolfo Rivas-Ruiz, Virginia Gordillo-Álvarez, Miguel Ángel Villasis-Keever
Objetivo: determinar la efi cacia de la lactancia materna (LM) para el manejo del dolor agudo después de la vacunación en lactantes menores de 6 meses al compararse con el sucedáneo de la leche (SL) y no aplicar ninguna maniobra.Métodos: se realizó un ensayo clínico controlado aleatorizado, ciego simple en fase III en lactantes menores de 6 meses de edad. Se incluyeron 3 grupos: LM, SL y sin aplicar analgesia (control). El dolor se midió a través del tiempo de llanto y una escala de dolor pediátrico...
March 30, 2017: Nutrición Hospitalaria: Organo Oficial de la Sociedad Española de Nutrición Parenteral y Enteral
https://www.readbyqxmd.com/read/28421627/impact-of-microorganisms-humidity-and-temperature-on-the-enantioselective-degradation-of-imazethapyr-in-two-soils
#8
REVIEW
Hao Wu, Xiaolin He, Huifen Dong, Qingyan Zhou, Yongsong Zhang
Imazethapyr (IM) is a chiral herbicide composed of an (-)-R-enantiomer and an (+)-S-enantiomer with differential herbicidal activity. In this study, the effects of microbial organisms, humidity, and temperature on the selective degradation of the (-)-R- and (+)-S-enantiomers of IM were determined in silty loam (SL) and clay loam (CL) soil with different pH values. The (-)-R-enantiomer of IM was preferentially degraded in two soils under different microorganism, humidity, and temperature conditions. The average half-lives of R-IM ranged from 43 to 66...
April 19, 2017: Chirality
https://www.readbyqxmd.com/read/28421011/practical-consequences-of-item-response-theory-model-misfit-in-the-context-of-test-equating-with-mixed-format-test-data
#9
Yue Zhao, Ronald K Hambleton
In item response theory (IRT) models, assessing model-data fit is an essential step in IRT calibration. While no general agreement has ever been reached on the best methods or approaches to use for detecting misfit, perhaps the more important comment based upon the research findings is that rarely does the research evaluate IRT misfit by focusing on the practical consequences of misfit. The study investigated the practical consequences of IRT model misfit in examining the equating performance and the classification of examinees into performance categories in a simulation study that mimics a typical large-scale statewide assessment program with mixed-format test data...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/28415775/adverse-genomic-alterations-and-stemness-features-are-induced-by-field-cancerization-in-the-microenvironment-of-hepatocellular-carcinomas
#10
Darko Castven, Michael Fischer, Diana Becker, Stefan Heinrich, Jesper B Andersen, Dennis Strand, Martin F Sprinzl, Susanne Strand, Carolin Czauderna, Stefanie Heilmann-Heimbach, Stephanie Roessler, Arndt Weinmann, Marcus A Wörns, Snorri S Thorgeirsson, Peter R Galle, Matthias S Matter, Hauke Lang, Jens U Marquardt
Hepatocellular Carcinoma (HCC) commonly develops in chronically damaged liver tissues. The resulting regenerative and inflammatory processes create an adverse milieu that promotes tumor-initiation and progression. A better understanding of the hepatic tumor-microenvironment interaction might infer profound therapeutic implications.Integrative whole genome and transcriptome analyses of different tumor regions, the invasive tumor border and tumor-surrounding liver (SL) were performed to identify associated molecular alterations and integrated with our existing HCC database...
March 15, 2017: Oncotarget
https://www.readbyqxmd.com/read/28410772/recovery-of-quantum-efficiency-in-spin-polarized-photocathodes-by-atomic-hydrogen-cleaning
#11
Xiuguang Jin, Masao Suzuki, Tsuneo Yasue, Takanori Koshikawa, Yoshikazu Takeda
We demonstrate a new method of cleaning superlattice (SL) photocathodes using atomic hydrogen that allows an increased number of repeat activations. GaAs/GaAsP SL photocathodes were activated with either conventional heat cleaning or atomic hydrogen cleaning. Repeated heat cleaning was found to gradually lower the quantum efficiency (QE) of the photocathodes, while a relatively constant QE was maintained over repeated atomic hydrogen cleaning. These results show that atomic hydrogen cleaning allows a greater number of photocathode cleanings without a loss of performance...
March 30, 2017: Ultramicroscopy
https://www.readbyqxmd.com/read/28404726/regulation-of-strigolactone-biosynthesis-by-gibberellin-signaling
#12
Shinsaku Ito, Daichi Yamagami, Mikihisa Umehara, Atsushi Hanada, Satoko Yoshida, Yasuyuki Sasaki, Shunsuke Yajima, Junko Kyozuka, Miyako Ueguchi-Tanaka, Makoto Matsuoka, Ken Shirasu, Shinjiro Yamaguchi, Tadao Asami
Strigolactones (SLs) are a class of plant hormones that regulate diverse physiological processes, including shoot branching and root development. They also act as rhizosphere signaling molecules to stimulate the germination of root parasitic weeds and the branching of arbuscular mycorrhizal fungi. Although various types of cross-talk between SLs and other hormones have been reported in physiological analyses, the cross-talk between gibberellin (GA) and SLs is poorly understood. We screened for chemicals that regulate the level of SLs in rice and identified GA as a novel SL-regulating molecule...
April 12, 2017: Plant Physiology
https://www.readbyqxmd.com/read/28403022/the-sternum-nipple-distance-is-double-the-nipple-inframammary-fold-distance-in-macromastia
#13
Thomas N Steele, Julian J Pribaz, Frank H Lau
BACKGROUND: Reduction mammaplasty is one of the most commonly performed plastic surgery operations. For a majority of techniques, the most common long-term complication is pseudoptosis. It has previously been proposed that upper breast suspensory ligaments (SL) are weaker than lower breast SL. We tested this hypothesis through anthropometry of the proxies for upper and lower SL strength: the sternal notch-nipple (SN-N) distance and the nipple-inframammary fold (N-IMF) distance, respectively...
April 11, 2017: Annals of Plastic Surgery
https://www.readbyqxmd.com/read/28401020/control-of-tissue-size-and-development-by-a-regulatory-element-in-the-yorkie-3-utr
#14
Takanari Umegawachi, Hideki Yoshida, Hiromu Koshida, Momoko Yamada, Yasuyuki Ohkawa, Tetsuya Sato, Mikita Suyama, Henry M Krause, Masamitsu Yamaguchi
Regulation of the Hippo pathway via phosphorylation of Yorkie (Yki), the Drosophila homolog of human Yes-associated protein 1, is conserved from Drosophila to humans. Overexpression of a non-phosphorylatable form of Yki induces severe overgrowth in adult fly eyes. Here, we show that yki mRNA associates with microsomal fractions and forms foci that partially colocalize to processing bodies in the vicinity of endoplasmic reticulum. This localization is dependent on a stem-loop (SL) structure in the 3' untranslated region of yki...
2017: American Journal of Cancer Research
https://www.readbyqxmd.com/read/28399470/evaluation-of-the-effect-of-tacrolimus-on-periodontitis-induced-in-rats
#15
Luiz Alexandre Moura Penteado, Gilmara Medeiros Lucena, Marcílio Otávio Brandão Peixoto, Thiago Correia Barbosa, Ana Carolina de Souza Leitão Arruda, Renata Cimões
OBJECTIVE: This study was to investigate the effect of tacrolimus (FK506) on periodontitis induced in rats. DESIGN: Periodontal disease was induced in 30 Wistar rats which were then randomly divided into two groups: treatment with a daily injection of 0.9% saline (1mL/day) and treatment with a daily injection of FK506. After periods of 10, 15 and 30days the animals were killed and separate radiographs of the right and left hemimandibles were obtained. One calibrated examiner measured the periodontal bone support (PBS) in the images, after the following treatments: S, saline without ligature; SL, saline with ligature; T, FK506 without ligature; TL, FK506 with ligature...
April 2, 2017: Archives of Oral Biology
https://www.readbyqxmd.com/read/28396420/mutation-in-sorghum-low-germination-stimulant-1-alters-strigolactones-and-causes-striga-resistance
#16
Daniel Gobena, Mahdere Shimels, Patrick J Rich, Carolien Ruyter-Spira, Harro Bouwmeester, Satish Kanuganti, Tesfaye Mengiste, Gebisa Ejeta
Striga is a major biotic constraint to sorghum production in semiarid tropical Africa and Asia. Genetic resistance to this parasitic weed is the most economically feasible control measure. Mutant alleles at the LGS1 (LOW GERMINATION STIMULANT 1) locus drastically reduce Striga germination stimulant activity. We provide evidence that the responsible gene at LGS1 codes for an enzyme annotated as a sulfotransferase and show that functional loss of this gene results in a change of the dominant strigolactone (SL) in root exudates from 5-deoxystrigol, a highly active Striga germination stimulant, to orobanchol, an SL with opposite stereochemistry...
April 10, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28395825/evaluation-of-structured-lipids-with-behenic-acid-in-the-prevention-of-obesity
#17
Débora Kono Taketa Moreira, Paola Souza Santos, Alessandra Gambero, Gabriela Alves Macedo
Obesity affects all social classes, making it necessary to develop effective products that aid weight loss or help prevent weight gain. The objective of this work was to study the anti-obesity effects of structured lipids (SL) obtained by enzymatic interesterification, based on olive oil, soy oil and fully hydrogenated crambe oil. Twenty-four C57Bl/6 mice were distributed into four experimental groups according to the diet consumed: Control Diet (CD), Structured Lipids Diet (SLD), High-fat Control Diet (HCD), High-fat Structured Lipids Diet (HSLD)...
May 2017: Food Research International
https://www.readbyqxmd.com/read/28394905/use-of-a-machine-learning-framework-to-predict-substance-use-disorder-treatment-success
#18
Laura Acion, Diana Kelmansky, Mark van der Laan, Ethan Sahker, DeShauna Jones, Stephan Arndt
There are several methods for building prediction models. The wealth of currently available modeling techniques usually forces the researcher to judge, a priori, what will likely be the best method. Super learning (SL) is a methodology that facilitates this decision by combining all identified prediction algorithms pertinent for a particular prediction problem. SL generates a final model that is at least as good as any of the other models considered for predicting the outcome. The overarching aim of this work is to introduce SL to analysts and practitioners...
2017: PloS One
https://www.readbyqxmd.com/read/28394240/effect-of-laser-activated-irrigations-on-smear-layer-removal-from-the-root-canal-wall
#19
Xiaoli Wang, Xiaogang Cheng, Baogang Liu, Xin Liu, Qing Yu, Wenxi He
OBJECTIVE: The purpose of this study was to evaluate the effect of laser-activated irrigations (LAI) by using the Erbium: Yttrium Aluminum Garnet (Er:YAG) laser and the Erbium Chromium: Yttrium Scandium Gallium Garnet (Er,Cr:YSGG) laser on removing smear layer (SL) from the root canal wall. BACKGROUND DATA: LAI has been proposed as an adjuvant to conventional protocols of endodontic treatment to enhance the disinfection, which is a promising protocol for SL removal...
April 5, 2017: Photomedicine and Laser Surgery
https://www.readbyqxmd.com/read/28392795/the-role-of-endogenous-strigolactones-and-their-interaction-with-aba-during-the-infection-process-of-the-parasitic-weed-phelipanche-ramosa-in-tomato-plants
#20
Xi Cheng, Kristýna Floková, Harro Bouwmeester, Carolien Ruyter-Spira
The root parasitic plant species Phelipanche ramosa, branched broomrape, causes severe damage to economically important crops such as tomato. Its seed germination is triggered by host-derived signals upon which it invades the host root. In tomato, strigolactones (SLs) are the main germination stimulants for P. ramosa. Therefore, the development of low SL-producing lines may be an approach to combat the parasitic weed problem. However, since SLs are also a plant hormone controlling many aspects of plant development, SL deficiency may also have an effect on post-germination stages of the infection process, during the parasite-host interaction...
2017: Frontiers in Plant Science
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