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https://www.readbyqxmd.com/read/28646186/magnetisation-switching-of-fept-nanoparticle-recording-medium-by-femtosecond-laser-pulses
#1
R John, M Berritta, D Hinzke, C Müller, T Santos, H Ulrichs, P Nieves, J Walowski, R Mondal, O Chubykalo-Fesenko, J McCord, P M Oppeneer, U Nowak, M Münzenberg
Manipulation of magnetisation with ultrashort laser pulses is promising for information storage device applications. The dynamics of the magnetisation response depends on the energy transfer from the photons to the spins during the initial laser excitation. A material of special interest for magnetic storage are FePt nanoparticles, for which switching of the magnetisation with optical angular momentum was demonstrated recently. The mechanism remained unclear. Here we investigate experimentally and theoretically the all-optical switching of FePt nanoparticles...
June 23, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28645769/access-to-preventive-services-for-working-age-adults-with-physical-limitations
#2
Gilbert Gimm, Elizabeth Wood, Preeti Zanwar
OBJECTIVE: To examine differences in access to preventive services for working-age adults with physical limitations, non-physical limitations, and no limitations. DESIGN: Observational data were pooled across calendar years 2003-2012 from the Medical Expenditure Panel Survey (MEPS), a nationally representative survey of non-institutionalized U.S. adults. SETTING: Community. PARTICIPANTS: Working-age adults (18-64 years of age) who responded to all five rounds in MEPS during 2003 through 2012...
June 20, 2017: Archives of Physical Medicine and Rehabilitation
https://www.readbyqxmd.com/read/28639321/association-of-the-5-ht2a-receptor-gene-promoter-polymorphism-1438g-a-with-anorexia-nervosa-and-psychopathological-traits-in-the-chinese-han-population-a-preliminary-study
#3
Qing Kang, Jue Chen, Shunying Yu, Aihua Yuan, Yanxia Zhang, Ran Zhang, Wenhui Jiang, Chen Zhang, Haiyin Zhang, Mingdao Zhang, Zeping Xiao
OBJECTIVE: The aim of the study was to explore the possible role of the 5-HT2A -1438G/A polymorphism in the susceptibility to anorexia nervosa (AN) in the Chinese Han population. METHODS: The -1438G/A polymorphism of 249 female AN patients, 228 matched healthy controls, and 198 trios was genotyped using SNaP shot assay. Psychopathological traits of eating-disordered behaviors in AN subjects were examined using the Chinese version of the Eating Disorder Examination Questionnaire...
June 22, 2017: Asia-Pacific Psychiatry: Official Journal of the Pacific Rim College of Psychiatrists
https://www.readbyqxmd.com/read/28629572/3t-diffusion-weighted-mri-in-the-response-assessment-of-colorectal-liver-metastases-after-chemotherapy-correlation-between-adc-value-and-histological-tumour-regression-grading
#4
Francescamaria Donati, Piero Boraschi, Federica Pacciardi, Rosa Cervelli, Maura Castagna, Lucio Urbani, Fabio Falaschi, Davide Caramella
PURPOSE: The purpose of the study was to correlate the apparent diffusion coefficient (ADC) values of diffusion-weighted MR imaging (DW-MRI) by 3T device with the histological tumour regression grading (TRG) analysis of colorectal liver metastases after preoperative chemotherapy. MATERIALS AND METHODS: Our study included thirty-five patients with colorectal liver metastases who had undergone MRI by 3T device (GE DISCOVERY MR750; GE Healthcare) after preoperative chemotherapy...
June 2017: European Journal of Radiology
https://www.readbyqxmd.com/read/28625928/second-generation-cryoballoon-ablation-in-the-setting-of-left-common-pulmonary-veins-procedural-findings-and-clinical-outcome
#5
Erwin Ströker, Ken Takarada, Carlo de Asmundis, Juan-Pablo Abugattas, Giacomo Mugnai, Vedran Velagic, Valentina de Regibus, Hugo-Enrique Coutiño, Rajin Choudhury, Saverio Iacopino, Yves De Greef, Kaoru Tanaka, Pedro Brugada, Gian-Battista Chierchia
BACKGROUND: A left common pulmonary vein (LCPV) accounts as the most frequent PV variation. The use of the cryoballoon (CB) for isolating these veins, is still debatable. To date, no data are available regarding the feasibility, acute PV isolation, and clinical outcome of the second-generation CB (CB-A) in this setting. OBJECTIVE: To investigate the performance of the CB-A in patients with LCPVs. METHODS: In a total cohort of 433 patients having undergone CB-A ablation for drug-refractory atrial fibrillation (AF) together with pre-procedural CT-scanning, 146 patients presented a LCPV...
June 15, 2017: Heart Rhythm: the Official Journal of the Heart Rhythm Society
https://www.readbyqxmd.com/read/28624812/extracorporeal-shock-wave-treatment-attenuated-left-ventricular-dysfunction-and-remodeling-in-mini-pig-with-cardiorenal-syndrome
#6
Jiunn-Jye Sheu, Hani E E Ali, Ben-Chung Cheng, Hsin-Ju Chiang, Pei-Hsun Sung, Kuan-Hung Chen, Chih-Chao Yang, Yen-Ta Chen, John Y Chiang, Pao-Yuan Lin, Sarah Chua, Han-Tan Chai, Sheng-Ying Chung, Cheuk-Kwan Sun, Hon-Kan Yip
This study tested the hypothesis that extracorporeal shock wave (ECSW) treatment can improve ischemia-induced left ventricular (LV) dysfunction in mini-pig with co-existing chronic kidney disease (CKD). LV ischemia in mini-pigs was induced by applying an ameroid constrictor over mid-left anterior descending artery (LAD), while model of CKD was established by right nephrectomy with partial ligation of left renal arterioles 2 weeks before LAD constriction. Thirty mini-pigs were randomly divided into group 1 (sham-control), group 2 (LV-ischemia), group 3 (LV-ischemia + CKD), Group 4 [LV-ischemia + ECSW (applied 1200 shots at 0...
May 30, 2017: Oncotarget
https://www.readbyqxmd.com/read/28616928/-clinical-study-of-rs-epi-dwi-to-improve-imaging-quality-and-assessment-on-intracranial-mass-lesions
#7
Kai Zhang, Chun-Chao Xia, Qiang Yue, Tao Guo, Wan-Lin Peng, Yu-Ming Li, Lei Li, Fei Zhao, Jin Pu, Qi Leng, Zhen-Lin Li
OBJECTIVES: To explore the clinical value of readout-segmented echo planar imaging (Rs-EPI) sequence in the assessment of intracranial mass lesions compared to the standard single-shot EPI (Ss-EPI) sequence. METHODS: We included 21 patients with intracranial mass lesions who underwent both Ss-EPI diffusion weighted imaging (DWI) and Rs-EPI DWI at 3.0T MR scanner with a twenty-channel head-neck coil. The quality of images was assessed by two experienced radiologists independently...
May 2017: Sichuan da Xue Xue Bao. Yi Xue Ban, Journal of Sichuan University. Medical Science Edition
https://www.readbyqxmd.com/read/28614343/original-ti-sa-10%C3%A2-%C3%A2-khz-front-end-design-delivering-17%C3%A2-%C3%A2-fs-170%C3%A2-%C3%A2-mrad-cep-stabilized-pulses-up-to-5%C3%A2-%C3%A2-w
#8
A Golinelli, X Chen, E Gontier, B Bussière, O Tcherbakoff, M Natile, P d'Oliveira, P-M Paul, J-F Hergott
We present a compact 10 kHz Ti:Sa front end relying on an original double-crystal regenerative amplifier design. This new configuration optimizes the thermal heat load management, allowing the production of a 110 nm large spectrum and maintaining a good beam profile quality. The front end delivers up to 5 W after compression, 17 fs pulses with a 170 mrad shot-to-shot residual carrier-envelope phase noise.
June 15, 2017: Optics Letters
https://www.readbyqxmd.com/read/28612040/double-shot-mev-electron-diffraction-and-microscopy
#9
P Musumeci, D Cesar, J Maxson
In this paper, we study by numerical simulations a time-resolved MeV electron scattering mode where two consecutive electron pulses are used to capture the evolution of a material sample on 10 ps time scales. The two electron pulses are generated by illuminating a photocathode in a radiofrequency photogun by two short laser pulses with adjustable delay. A streak camera/deflecting cavity is used after the sample to project the two electron bunches on two well separated regions of the detector screen. By using sufficiently short pulses, the 2D spatial information from each snapshot can be preserved...
July 2017: Structural Dynamics (Melville, N.Y.)
https://www.readbyqxmd.com/read/28611731/the-genomic-architecture-of-novel-simulium-damnosum-wolbachia-prophage-sequence-elements-and-implications-for-onchocerciasis-epidemiology
#10
James L Crainey, Jacob Hurst, Poppy H L Lamberton, Robert A Cheke, Claire E Griffin, Michael D Wilson, Cláudia P Mendes de Araújo, María-Gloria Basáñez, Rory J Post
Research interest in Wolbachia is growing as new discoveries and technical advancements reveal the public health importance of both naturally occurring and artificial infections. Improved understanding of the Wolbachia bacteriophages (WOs) WOcauB2 and WOcauB3 [belonging to a sub-group of four WOs encoding serine recombinases group 1 (sr1WOs)], has enhanced the prospect of novel tools for the genetic manipulation of Wolbachia. The basic biology of sr1WOs, including host range and mode of genomic integration is, however, still poorly understood...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28610311/the-wild-shot-photography-for-more-biology-in-natural-history-collections-not-for-replacing-vouchers
#11
Romain Garrouste
Recently a correspondence in Zootaxa (Ceríaco et al., 2016) with more than 450 signatories including taxonomists, curators and other taxonomy users from all continents has received wide attention and has stimulated extensive discussion (a true buzz) around the possible interpretations of the Code (ICZN) about photography in taxonomy (Researchgate website link). This short note was necessary to recall the necessity of preserved specimens as vouchers for taxonomy, in response to photography-based taxonomy (PBT) as defended by Pape et al...
May 24, 2017: Zootaxa
https://www.readbyqxmd.com/read/28609448/%C3%AE-copaene-is-an-attractant-synergistic-with-quercivorol-for-improved-detection-of-euwallacea-nr-fornicatus-coleoptera-curculionidae-scolytinae
#12
Paul E Kendra, David Owens, Wayne S Montgomery, Teresa I Narvaez, Gary R Bauchan, Elena Q Schnell, Nurhayat Tabanca, Daniel Carrillo
The tea shot-hole borer, Euwallacea fornicatus Eichhoff, is an ambrosia beetle endemic to Asia and a pest of commercial tea, Camellia sinensis (L.) Kuntze. Recently, a complex of species morphologically similar to E. fornicatus has been recognized, which includes new pests established in Israel and the USA, both in California and Florida. Collectively termed E. nr. fornicatus, these cryptic species carry symbiotic Fusarium spp. fungi, some of which cause dieback disease in susceptible hosts, which include avocado, Persea americana Miller...
2017: PloS One
https://www.readbyqxmd.com/read/28607614/pulmonary-vein-potential-mapping-in-atrial-fibrillation-with-high-density-and-standard-spiral-lasso-catheters-a-comparative-study
#13
Axel Meissner, Petra Maagh, Arnd Christoph, Ahmet Oernek, Gunnar Plehn
BACKGROUND: The dominant single-shot procedure for Pulmonary Vein Isolation (PVI) is the Cryoballoon Ablation (CBA) technique using a spiral catheter (Achieve™, AC) for mapping and monitoring purposes. We hypothesized that Basket Catheters, such as the High Density Mesh Mapper (HDMM), with its high-density mapping properties, could detect Pulmonary Vein Potentials (PVPs) that the octapolar AC would not be able to identify. METHODS: Twenty-four patients (average age 61...
June 2017: Journal of Arrhythmia
https://www.readbyqxmd.com/read/28602943/in-vivo-b0-field-shimming-methods-for-mri-at-7-t
#14
Jason P Stockmann, Lawrence L Wald
Functional MRI (fMRI) at 7 T and above provides improved Signal-to-Noise Ratio and Contrast-to-Noise Ratio compared to 3 T acquisitions. In addition to the beneficial effects on spin polarization and magnetization of deoxyhemoglobin, the increased applied field also further magnetizes air and tissue. While the magnets themselves typically provide a static B0 field with sufficient spatial homogeneity, the diamagnetism of tissue and the paramagnetism of air causes local field deviations inside the human head...
June 7, 2017: NeuroImage
https://www.readbyqxmd.com/read/28601561/the-3dbiopsy-prostate-biopsy-system-preclinical-investigation-of-a-needle-actuator-and-specimen-collection-device-allowing-sampling-of-individualized-prostate-lengths-between-20-and-60-mm
#15
Nelson N Stone, Vladimir Mouraviev, David Schechter, M Scott Lucia, Elizabeth E Smith, Paul Arangua, John Hoenemeyer, Jim Rosa, Rajan Bawa, E David Crawford
OBJECTIVE: To increase the likelihood of detecting anterior cancers within the prostate and provide a specimen that spans the length of the gland. Newly designed 17- and 15-gauge (G) biopsy needles, a variable actuator and integrated pathology system intended for the longer cores were developed and tested for this purpose. MATERIALS AND METHODS: Testing was performed comparing two common cannula tip grinds, a Vet-point (sharp tip) and Menghini-point (atraumatic tip) and were tested against 18-G Bard MonoptyTM in porcine kidney...
June 7, 2017: Urology
https://www.readbyqxmd.com/read/28580940/accurate-prediction-of-x-ray-pulse-properties-from-a-free-electron-laser-using-machine-learning
#16
A Sanchez-Gonzalez, P Micaelli, C Olivier, T R Barillot, M Ilchen, A A Lutman, A Marinelli, T Maxwell, A Achner, M Agåker, N Berrah, C Bostedt, J D Bozek, J Buck, P H Bucksbaum, S Carron Montero, B Cooper, J P Cryan, M Dong, R Feifel, L J Frasinski, H Fukuzawa, A Galler, G Hartmann, N Hartmann, W Helml, A S Johnson, A Knie, A O Lindahl, J Liu, K Motomura, M Mucke, C O'Grady, J-E Rubensson, E R Simpson, R J Squibb, C Såthe, K Ueda, M Vacher, D J Walke, V Zhaunerchyk, R N Coffee, J P Marangos
Free-electron lasers providing ultra-short high-brightness pulses of X-ray radiation have great potential for a wide impact on science, and are a critical element for unravelling the structural dynamics of matter. To fully harness this potential, we must accurately know the X-ray properties: intensity, spectrum and temporal profile. Owing to the inherent fluctuations in free-electron lasers, this mandates a full characterization of the properties for each and every pulse. While diagnostics of these properties exist, they are often invasive and many cannot operate at a high-repetition rate...
June 5, 2017: Nature Communications
https://www.readbyqxmd.com/read/28577332/hippocampal-fractional-amplitude-of-low-frequency-fluctuation-and-functional-connectivity-changes-in-premenstrual-syndrome
#17
Gaoxiong Duan, Huimei Liu, Yong Pang, Peng Liu, Yanfei Liu, Geliang Wang, Hai Liao, Lijun Tang, Wenfu Chen, Xiaping Mo, Danhong Wen, Hua Lin, Demao Deng
PURPOSE: To investigate differences in hippocampal activity between premenstrual syndrome (PMS) patients and healthy controls, to elucidate the neural mechanisms of PMS. MATERIALS AND METHODS: Twenty female patients with PMS (PMS group) and 21 healthy controls (HC group) underwent a single-shot gradient-recalled echo planar imaging (EPI) sequence scan during the luteal phase in 3.0 Tesla MRI. Spontaneous neural activity in hippocampus (HIPP) was measured by fractional amplitude of low-frequency fluctuation (fALFF)...
June 3, 2017: Journal of Magnetic Resonance Imaging: JMRI
https://www.readbyqxmd.com/read/28574858/diffusion-tensor-imaging-in-chronic-inflammatory-demyelinating-polyneuropathy-diagnostic-accuracy-and-correlation-with-electrophysiology
#18
Moritz Kronlage, Kalliopi Pitarokoili, Daniel Schwarz, Tim Godel, Sabine Heiland, Min-Suk Yoon, Martin Bendszus, Philipp Bäumer
PURPOSE: The aims of this study were to assess diagnostic accuracy of diffusion tensor imaging (DTI) in chronic inflammatory demyelinating polyneuropathy (CIDP), to correlate DTI with electrophysiological parameters, and to evaluate whether radial diffusivity (RD) and axial diffusivity (AD) might serve as specific biomarkers of demyelinating and axonal pathology. MATERIALS AND METHODS: This prospective study was approved by the institutional ethics committee, and written informed consent was obtained from all participants...
June 1, 2017: Investigative Radiology
https://www.readbyqxmd.com/read/28574190/flow-aligned-single-shot-fiber-diffraction-using-a-femtosecond-x-ray-free-electron-laser
#19
David Popp, N Duane Loh, Habiba Zorgati, Umesh Ghoshdastider, Lu Ting Liow, Magdalena I Ivanova, Mårten Larsson, Daniel P DePonte, Richard Bean, Kenneth R Beyerlein, Cornelius Gati, Dominik Oberthuer, David Arnlund, Gisela Brändén, Peter Berntsen, Duilio Cascio, Leonard M G Chavas, Joe P J Chen, Ke Ding, Holger Fleckenstein, Lars Gumprecht, Rajiv Harimoorthy, Estelle Mossou, Michael R Sawaya, Aaron S Brewster, Johan Hattne, Nicholas K Sauter, Marvin Seibert, Carolin Seuring, Francesco Stellato, Thomas Tilp, David S Eisenberg, Marc Messerschmidt, Garth J Williams, Jason E Koglin, Lee Makowski, Rick P Millane, Trevor Forsyth, Sébastien Boutet, Thomas A White, Anton Barty, Henry Chapman, Swaine L Chen, Mengning Liang, Richard Neutze, Robert C Robinson
A major goal for X-ray free-electron laser (XFEL) based science is to elucidate structures of biological molecules without the need for crystals. Filament systems may provide some of the first single macromolecular structures elucidated by XFEL radiation, since they contain one-dimensional translational symmetry and thereby occupy the diffraction intensity region between the extremes of crystals and single molecules. Here, we demonstrate flow alignment of as few as 100 filaments (Escherichia coli pili, F-actin, and amyloid fibrils), which when intersected by femtosecond X-ray pulses result in diffraction patterns similar to those obtained from classical fiber diffraction studies...
June 2, 2017: Cytoskeleton
https://www.readbyqxmd.com/read/28572386/entanglement-distillation-between-solid-state-quantum-network-nodes
#20
N Kalb, A A Reiserer, P C Humphreys, J J W Bakermans, S J Kamerling, N H Nickerson, S C Benjamin, D J Twitchen, M Markham, R Hanson
The impact of future quantum networks hinges on high-quality quantum entanglement shared between network nodes. Unavoidable imperfections necessitate a means to improve remote entanglement by local quantum operations. We realize entanglement distillation on a quantum network primitive of distant electron-nuclear two-qubit nodes. The heralded generation of two copies of a remote entangled state is demonstrated through single-photon-mediated entangling of the electrons and robust storage in the nuclear spins...
June 2, 2017: Science
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