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https://www.readbyqxmd.com/read/28437981/efficient-laser-noise-reduction-method-via-actively-stabilized-optical-delay-line
#1
Dawei Li, Cheng Qian, Ye Li, Jianye Zhao
We report a fiber laser noise reduction method by locking it to an actively stabilized optical delay line, specifically a fiber-based Mach-Zehnder interferometer with a 10 km optical fiber spool. The fiber spool is used to achieve large arm imbalance. The heterodyne signal of the two arms converts the laser noise from the optical domain to several megahertz, and it is used in laser noise reduction by a phase-locked loop. An additional phase-locked loop is induced in the system to compensate the phase noise due to environmentally induced length fluctuations of the optical fiber spool...
April 17, 2017: Optics Express
https://www.readbyqxmd.com/read/28437645/facile-modification-of-nanoscale-zero-valent-iron-with-high-stability-for-cr-vi-remediation
#2
Ziling Peng, Chunmei Xiong, Wei Wang, Fatang Tan, Yang Xu, Xinyun Wang, Xueliang Qiao
In this study, a highly stable nanoscale zero-valent iron composite (HS-NZVI) was obtained via modifying nanoscale zero-valent iron (NZVI) with tetraethyl orthosilicate (TEOS) and hexadecyltrimethoxysilane (HDTMOS), and used for Cr(VI) remediation in aqueous solution. The obtained HS-NZVI remained stable in water without being oxidized for over 12h. After four consecutive runs, the Cr(VI) removal efficiency of HS-NZVI maintained a value of more than 82%. Moreover, the Cr(VI) removal capacity per unit weight of NZVI in HS-NZVI reached 292...
April 21, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28437548/arthroscopic-treatment-of-a-displaced-nonunion-of-the-anterior-inferior-iliac-spine-causing-extra-articular-impingement
#3
Motoi Shibahara, Yasuo Ohnishi, Eisaburo Honda, Dean K Matsuda, Soshi Uchida
This report describes a case of nonunion of an anterior inferior iliac spine (AIIS) apophyseal avulsion fracture with resultant subspine impingement combined with symptomatic femoroacetabular impingement (FAI). A 16-year-old male soccer player presented with a 6-month history of right groin pain exacerbated by kicking and running. The patient was diagnosed with a displaced nonunion of the AIIS apophysis avulsion fracture causing secondary extra-articular impingement beyond cam-type FAI by physical examination and radiological findings...
April 24, 2017: Orthopedics
https://www.readbyqxmd.com/read/28437479/conformational-dynamics-of-bacterial-trigger-factor-in-apo-and-ribosome-bound-states
#4
Mehmet Tarik Can, Zeynep Kurkcuoglu, Gokce Ezeroglu, Arzu Uyar, Ozge Kurkcuoglu, Pemra Doruker
The chaperone trigger factor (TF) binds to the ribosome exit tunnel and helps cotranslational folding of nascent chains (NC) in bacterial cells and chloroplasts. In this study, we aim to investigate the functional dynamics of fully-atomistic apo TF and its complex with 50S. As TF accomodates a high percentage of charged residues on its surface, the effect of ionic strength on TF dynamics is assessed here by performing five independent molecular dynamics (MD) simulations (total of 1.3 micro-second duration) at 29 mM and 150 mM ionic strengths...
2017: PloS One
https://www.readbyqxmd.com/read/28437297/pearl-pain-in-early-life-a-new-network-for-research-and-education
#5
Randi Dovland Andersen, Anna Axelin, Guðrún Kristjánsdóttir, Mats Eriksson
No abstract text is available yet for this article.
April 2017: Journal of Perinatal & Neonatal Nursing
https://www.readbyqxmd.com/read/28437129/acute-ankle-sprain-in-a-mouse-model-changes-in-knee-joint-space
#6
Tricia Hubbard-Turner, Erik A Wikstrom, Sophie Guderian, Michael J Turner
CONTEXT:   Ankle sprains remain the most common orthopaedic injury. Conducting long-term studies in humans is difficult and costly, so the long-term consequences of an ankle sprain are not entirely known. OBJECTIVE:   To measure knee-joint space after a single surgically induced ankle sprain in mice. DESIGN:   Randomized controlled trial. SETTING:   University research laboratory. PATIENTS OR OTHER PARTICIPANTS:   Thirty male mice (CBA/2J) were randomly placed into 1 of 3 surgical groups: the transected calcaneofibular ligament (CFL) group, the transected anterior talofibular ligament/CFL group, and a sham treatment group...
April 24, 2017: Journal of Athletic Training
https://www.readbyqxmd.com/read/28437121/follow-up-treatment-effects-of-contingency-management-and-motivational-interviewing-on-substance-use-a-meta-analysis
#7
Caitlin S Sayegh, Stanley J Huey, Erica J Zara, Kinnari Jhaveri
Motivation is an integral factor in substance use treatment and long-term recovery. However, it is unclear what role intrinsic and extrinsic motivation play across different treatment modalities. A meta-analysis (N = 84) was performed to estimate the pooled effect size of Motivational Interviewing (MI; primarily targeting intrinsic motivation) and contingency management (CM; primarily targeting extrinsic motivation) at different follow-up periods. Collapsed across all substance types, CM had a significant effect at 3-month follow-up, only...
April 24, 2017: Psychology of Addictive Behaviors: Journal of the Society of Psychologists in Addictive Behaviors
https://www.readbyqxmd.com/read/28437105/a-virtual-environment-for-studying-the-docking-interactions-of-rigid-biomolecules-with-haptics
#8
Georgios Iakovou, Steven Hayward, Stephen Laycock
Haptic technology facilitates user interaction with the virtual world via the sense of touch. In molecular docking, haptics enables the user to sense the interaction forces during the docking process. Here we describe a haptics-assisted interactive software tool, called Haptimol RD, for the study of docking interactions. By utilising GPU-accelerated proximity querying methods very large systems can now be studied. Methods for force scaling, multipoint collision response and haptic navigation are described that address force stability issues that are particular to the interactive docking of large systems...
April 24, 2017: Journal of Chemical Information and Modeling
https://www.readbyqxmd.com/read/28436893/a-parallel-multiclassification-algorithm-for-big-data-using-an-extreme-learning-machine
#9
Mingxing Duan, Kenli Li, Xiangke Liao, Keqin Li
As data sets become larger and more complicated, an extreme learning machine (ELM) that runs in a traditional serial environment cannot realize its ability to be fast and effective. Although a parallel ELM (PELM) based on MapReduce to process large-scale data shows more efficient learning speed than identical ELM algorithms in a serial environment, some operations, such as intermediate results stored on disks and multiple copies for each task, are indispensable, and these operations create a large amount of extra overhead and degrade the learning speed and efficiency of the PELMs...
April 24, 2017: IEEE Transactions on Neural Networks and Learning Systems
https://www.readbyqxmd.com/read/28436886/dna-assembly-with-de-bruijn-graphs-using-an-fpga-platform
#10
Carl Poirier, Benoit Gosselin, Paul Fortier
This paper presents an FPGA implementation of a DNA assembly algorithm, called Ray, initially developed to run on parallel CPUs. The OpenCL language is used and the focus is placed on modifying and optimizing the original algorithm to better suit the new parallelization tool and the radically different hardware architecture. The results show that the execution time is roughly one fourth that of the CPU and factoring energy consumption yields a tenfold savings.
April 24, 2017: IEEE/ACM Transactions on Computational Biology and Bioinformatics
https://www.readbyqxmd.com/read/28436694/acculturation-level-and-caregiver-outcomes-from-a-randomized-intervention-trial-to-enhance-caregivers-health-evidence-from-reach-ii
#11
Oanh L Meyer, Xiaoyan Lucia Liu, Daniel Tancredi, A Susana Ramirez, Richard Schulz, Ladson Hinton
OBJECTIVE: Latinos comprise a growing segment of the caregiver population and vary widely in acculturation, yet little is known regarding how acculturation might affect caregiver stress or intervention outcomes. This study examined the relationship between acculturation and burden, bother, and depression in Latino dementia caregivers at baseline and following an intervention. METHODS: This was a secondary data analysis of 211 Latino caregivers of older adults with dementia from Resources for Enhancing Alzheimer's Caregiver Health (REACH) II, a multisite randomized trial of caregiver interventions...
April 24, 2017: Aging & Mental Health
https://www.readbyqxmd.com/read/28436665/intra-and-interskeletal-proteome-variations-in-fresh-and-buried-bones
#12
Noemi Procopio, Andrew T Chamberlain, Michael Buckley
Proteomic methods are acquiring greater importance in archaeology and palaeontology due to the longevity of proteins in skeletal remains. There are also developing interests in forensic applications, offering the potential to shed light on post-mortem intervals and age at death estimation. However, our understanding of intra- and interskeletal proteome variations is currently severely limited. Here, we evaluated the proteomes obtained from five distinct subsamples of different skeletal elements from buried pig carcasses to ascertain the extent of variation within and between individuals...
April 24, 2017: Journal of Proteome Research
https://www.readbyqxmd.com/read/28436631/-video-head-impulse-test-for-evaluation-of-vestibular-function-in-patients-with-vestibular-neuritis-and-benign-paroxysmal-positional-vertigo
#13
Qiongfeng Guan, Lisan Zhang, Wenke Hong, Yi Yang, Zhaoying Chen, Dan Zhang, Xingyue Hu
Objective: To assess the clinical application of video head impulse test (vHIT) for vestibular function in vestibular neuritis (VN) and benign paroxysmal positional vertigo (BPPV) patients. Methods: Thirty-three patients with VN and 43 patients with BPPV were enrolled from Sir Run Run Shaw Hospital and Ningbo Second Hospital from March 15 to September 10, 2015; and 50 healthy controls were also enrolled in the study. vHIT was used to quantitatively test the vestibulo-ocular reflex (VOR) gains of a pair of horizontal semicircular canals...
January 25, 2017: Zhejiang da Xue Xue Bao. Yi Xue Ban, Journal of Zhejiang University. Medical Sciences
https://www.readbyqxmd.com/read/28436612/effects-of-zero-point-vibration-on-the-reaction-dynamics-of-water-dimer-cations-following-ionization
#14
Hiroto Tachikawa
Reactions of water dimer cation (H2O)2+ following ionization have been investigated by means of a direct ab initio molecular dynamics method. In particular, the effects of zero point vibration and zero point energy (ZPE) on the reaction mechanism were considered in this work. Trajectories were run on two electronic potential energy surfaces (PESs) of (H2O)2+: ground state ((2) A″-like state) and the first excited state ((2) A'-like state). All trajectories on the ground-state PES lead to the proton-transferred product: H2 O(+) (Wd)-H2 O(Wa) → OH(Wd)-H3 O(+) (Wa), where Wd and Wa refer to the proton donor and acceptor water molecules, respectively...
April 24, 2017: Journal of Computational Chemistry
https://www.readbyqxmd.com/read/28436458/development-of-a-fluorescent-asfv-strain-that-retains-the-ability-to-cause-disease-in-swine
#15
Manuel V Borca, Vivian O'Donnell, Lauren G Holinka, Brent Sanford, Paul A Azzinaro, Guillermo R Risatti, Douglas P Gladue
African swine fever is a contagious and often lethal disease for domestic pigs with a significant economic impact for the swine industry. The etiological agent, African swine fever virus (ASFV), is a highly structurally complex double stranded DNA virus. No effective vaccines or antiviral treatment are currently commercially available. We present here the development of a strain of ASFV that has been shown to retain its ability to cause disease in swine, efficiently replicate in swine macrophage and that is fluorescently tagged...
April 24, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28436105/exercise-decreases-marrow-adipose-tissue-though-%C3%A3-oxidation-in-obese-running-mice
#16
Maya Styner, Gabriel M Pagnotti, Cody McGrath, Xin Wu, Buer Sen, Gunes Uzer, Zhihui Xie, Xiaopeng Zong, Martin A Styner, Clinton T Rubin, Janet Rubin
The relationship between marrow adipose tissue (MAT) and bone health is poorly understood. We used running exercise to ask whether obesity-associated-MAT can be attenuated via exercise and whether this correlates with gains in bone quantity and quality. C57BL/6 mice were divided into diet-induced obesity (DIO n = 14) vs. low-fat diet (LFD n = 14). After 3 months, 16-week-old mice were allocated to an exercise intervention (LFD-E, DIO-E) or a control group (LFD, DIO) for 6 week (4 groups, n = 7/group)...
April 24, 2017: Journal of Bone and Mineral Research: the Official Journal of the American Society for Bone and Mineral Research
https://www.readbyqxmd.com/read/28436069/the-eprep-system-a-new-electrophoretic-approach-for-dna-isolation-from-biological-samples
#17
Corinna Kueppers, Sabine Schlappa, Annette Bogdoll, Lothar Breitkopf, Nicole Seip, Thorsten Singer
We present a new free-flow electrophoretic separation system that extends the established concepts of nucleic acid migration in an electric field to a broadly applicable preparative scale. The system comprises a disposable flow tube in which the target nucleic acids are separated from impurities by a balanced combination of electrophoretic migration and counter-streaming electroosmotic flow under the influence of an applied external electric field. Despite the complex theoretical background the introduced electrophoretic technology offers simple hardware setup and handling protocols...
April 24, 2017: Electrophoresis
https://www.readbyqxmd.com/read/28435731/crystal-structure-and-absolute-configuration-of-4s-5r-6s-4-5-6-trihy-droxy-3-methyl-cyclo-hex-2-enone-gabosine-h
#18
Gaurao D Tibhe, Mario A Macías, Enrique Pandolfi, Valeria Schapiro, Leopoldo Suescun
The mol-ecule of the title keto carbasugar, C7H10O4, is formed by a cyclo-hexene skeleton with an envelope conformation, substituted by carbonyl, methyl and hydroxyl groups. The crystal structure is controlled mainly by a combination of strong O-H⋯O and weak C-H⋯O hydrogen bonds, forming nearly perpendicular chains running parallel to the [110] and [-110] directions. This perpendicularity is caused by a tetra-gonal pseudosymmetry influenced by the similarity between the a and b axes, the value of 90.9770 (10)° of the β angle and the action of a 21 screw axis, which transform each chain into its corresponding nearly orthogonal one...
April 1, 2017: Acta Crystallographica. Section E, Crystallographic Communications
https://www.readbyqxmd.com/read/28435728/crystal-structures-of-the-schiff-base-derivatives-e-n-1h-indol-3-yl-methyl-idene-isonicotino-hydrazide-ethanol-monosolvate-and-e-n-methyl-2-1-2-oxo-2h-chromen-3-yl-ethyl-idene-hydrazinecarbo-thio-amide
#19
Sivaraj Saranya, Jebiti Haribabu, Nattamai S P Bhuvanesh, Ramasamy Karvembu, Dasararaju Gayathri
The crystal structures of two title Schiff base derivatives, C15H12N4O·C2H6O (1·EtOH) and C13H13N3O2S (2), were determined at 110 and 100 K, respectively. In the crystal of compound 1·EtOH, the (E)-N'-[(1H-indol-3-yl)methyl-idene]isonicotinohydrazide and ethanol mol-ecules are linked by O-H⋯O, N-H⋯O and N-H⋯N hydrogen bonds, forming a tape structure running along the b-axis direction. The tapes are weakly linked via a C-H⋯N inter-action. In the crystal of compound 2, (E)-N-methyl-2-[1-(2-oxo-2H-chromen-3-yl)ethyl-idene]hydrazinecarbo-thio-amide mol-ecules are linked via N-H⋯O and C-H⋯O hydrogen bonds, forming a helical chain along the b-axis direction...
April 1, 2017: Acta Crystallographica. Section E, Crystallographic Communications
https://www.readbyqxmd.com/read/28435727/crystal-structure-of-bis-1-10-phenanthroline-%C3%AE%C2%BA-2-n-n-1-3-thia-zole-2-thiol-ato-%C3%AE%C2%BA-2-s-2-n-nickel-ii-hexa-fluorido-phosphate-1-4-dioxane-sesquisolvate
#20
Keisuke Kai, Tomohiko Hamaguchi, Isao Ando
The title salt, [Ni(C3H2NS2)(C12H8N2)2]PF6·1.5C4H8O2, was the unexpected product on making an attempt to prepare an [Ni(2-mercapto-thia-zol-ate)(1,10-phenanthroline)](+) complex by reaction of [NiCl2(1,10-phen-an-throline)] with 2-mercapto-thia-zolate. In the resulting complex, the 2-mercapto-thia-zolate anion acts as a chelating ligand, which coordinates to the Ni(II) ion with the thia-zolyl N and thiol-ate S atoms. In the crystal, π-π stacking inter-actions between the coordinating 1,10-phenanthroline mol-ecules of adjacent complexes result in a zigzag chain running parallel to the c axis...
April 1, 2017: Acta Crystallographica. Section E, Crystallographic Communications
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