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https://www.readbyqxmd.com/read/28338615/node-self-deployment-algorithm-based-on-pigeon-swarm-optimization-for-underwater-wireless-sensor-networks
#1
Shanen Yu, Yiming Xu, Peng Jiang, Feng Wu, Huan Xu
At present, free-to-move node self-deployment algorithms aim at event coverage and cannot improve network coverage under the premise of considering network connectivity, network reliability and network deployment energy consumption. Thus, this study proposes pigeon-based self-deployment algorithm (PSA) for underwater wireless sensor networks to overcome the limitations of these existing algorithms. In PSA, the sink node first finds its one-hop nodes and maximizes the network coverage in its one-hop region. The one-hop nodes subsequently divide the network into layers and cluster in each layer...
March 24, 2017: Sensors
https://www.readbyqxmd.com/read/28337590/acl-reconstructed-and-acl-deficient-individuals-show-differentiated-trunk-hip-and-knee-kinematics-during-vertical-hops-more-than-20%C3%A2-years-post-injury
#2
Jonas L Markström, Eva Tengman, Charlotte K Häger
PURPOSE: Little is known regarding movement strategies in the long term following injury of the anterior cruciate ligament (ACL), and even less about comparisons of reconstructed and deficient knees in relation to healthy controls. The present purpose was to compare trunk, hip, and knee kinematics during a one-leg vertical hop (VH) ~20 years post-ACL injury between persons treated with surgery and physiotherapy (ACLR), solely physiotherapy (ACLPT), and controls (CTRL). Between-leg kinematic differences within groups were also investigated...
March 23, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28335582/nonradiative-relaxation-mechanisms-of-uv-excited-phenylalanine-residues-a-comparative-computational-study
#3
Momir Mališ, Nađa Došlić
The present work is directed toward understanding the mechanisms of excited state deactivation in three neutral model peptides containing the phenylalanine residue. The excited state dynamics of theγL(g+)folded form of N-acetylphenylalaninylamide (NAPA B) and its amide-N-methylated derivative (NAPMA B) is reviewed and compared to the dynamics of the monohydrated structure of NAPA (NAPAH). The goal is to unravel how the environment, and in particular solvation, impacts the photodynamics of peptides. The systems are investigated using reaction path calculations and surface hopping nonadiabatic dynamics based on the coupled cluster doubles (CC2) method and time-dependent density functional theory...
March 21, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28335534/a-networked-sensor-system-for-the-analysis-of-plot-scale-hydrology
#4
German Villalba, Fernando Plaza, Xiaoyang Zhong, Tyler W Davis, Miguel Navarro, Yimei Li, Thomas A Slater, Yao Liang, Xu Liang
This study presents the latest updates to the Audubon Society of Western Pennsylvania (ASWP) testbed, a $50,000 USD, 104-node outdoor multi-hop wireless sensor network (WSN). The network collects environmental data from over 240 sensors, including the EC-5, MPS-1 and MPS-2 soil moisture and soil water potential sensors and self-made sap flow sensors, across a heterogeneous deployment comprised of MICAz, IRIS and TelosB wireless motes. A low-cost sensor board and software driver was developed for communicating with the analog and digital sensors...
March 20, 2017: Sensors
https://www.readbyqxmd.com/read/28335494/cooperative-opportunistic-pressure-based-routing-for-underwater-wireless-sensor-networks
#5
Nadeem Javaid, Muhammad, Arshad Sher, Wadood Abdul, Iftikhar Azim Niaz, Ahmad Almogren, Atif Alamri
In this paper, three opportunistic pressure based routing techniques for underwater wireless sensor networks (UWSNs) are proposed. The first one is the cooperative opportunistic pressure based routing protocol (Co-Hydrocast), second technique is the improved Hydrocast (improved-Hydrocast), and third one is the cooperative improved Hydrocast (Co-improved Hydrocast). In order to minimize lengthy routing paths between the source and the destination and to avoid void holes at the sparse networks, sensor nodes are deployed at different strategic locations...
March 19, 2017: Sensors
https://www.readbyqxmd.com/read/28334066/effect-of-drive-row-ground-covers-on-hop-rosales-cannabaceae-yard-arthropod-pests-in-vermont-usa
#6
L Calderwood, J Cubins, D Vesty, H Darby
Alternatives to pesticides are necessary for the management of hop (Humulus lupulus L.) arthropod pests. The three major arthropod pests in northeastern US hop production include two-spotted spider mite, Tetranychus urticae Koch, hop aphid Phorodon humuli (Schrank), and potato leafhopper, Empoasca fabae Harris. This 3-yr study (2012-2014) in Vermont investigated the effect of flowering ground covers on arthropod pest abundance. Hop cultivars 'Nugget' and 'Cascade' were evaluated under a strip-split plot experimental design...
February 17, 2017: Environmental Entomology
https://www.readbyqxmd.com/read/28333997/learning-better-by-repetition-or-variation-is-transfer-at-odds-with-task-specific-training
#7
Emmanuel Bonney, Lemke Dorothee Jelsma, Gillian D Ferguson, Bouwien C M Smits-Engelsman
OBJECTIVE: Transfer of motor skills is the ultimate goal of motor training in rehabilitation practice. In children with Developmental Coordination Disorder (DCD), very little is known about how skills are transferred from training situations to real life contexts. In this study we examined the influence of two types of practice on transfer of motor skills acquired in a virtual reality (VR) environment. METHOD: One hundred and eleven children with DCD and their typically developing (TD) peers, aged 6-10 years (M = 8...
2017: PloS One
https://www.readbyqxmd.com/read/28333170/energy-conversion-modeling-of-the-intrinsic-persistent-luminescence-of-solids-via-energy-transfer-paths-between-transition-levels
#8
Bolong Huang, Mingzi Sun
An energy conversion model has been established for the intrinsic persistent luminescence in solids related to the native point defect levels, formations, and transitions. In this study, we showed how the recombination of charge carriers between different defect levels along the zero phonon line (ZPL) can lead to energy conversions supporting the intrinsic persistent phosphorescence in solids. This suggests that the key driving force for this optical phenomenon is the pair of electrons hopping between different charged defects with negative-Ueff...
March 23, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28332675/tailoring-the-structure-and-thermoelectric-properties-of-batio3via-eu-2-substitution
#9
Xingxing Xiao, Marc Widenmeyer, Wenjie Xie, Tianhua Zou, Songhak Yoon, Marco Scavini, Stefano Checchia, Zhicheng Zhong, Philipp Hansmann, Stefan Kilper, Andrei Kovalevsky, Anke Weidenkaff
A series of Ba1-xEuxTiO3-δ (0.1 ≤ x ≤ 0.9) phases with ∼40 nm particle size were synthesized via a Pechini method followed by annealing and sintering under a reducing atmosphere. The effects of Eu(2+) substitution on the BaTiO3 crystal structure and the thermoelectric transport properties were systematically investigated. According to synchrotron X-ray diffraction data only cubic perovskite structures were observed. On the local scale below about 20 Å (equal to ∼5 unit cells) deviations from the cubic structure model (Pm3[combining macron]m) were detected by evaluation of the pair distribution function (PDF)...
March 23, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28330519/insecticidal-effects-of-extracts-of-humulus-lupulus-hops-l-cones-and-its-principal-component-xanthohumol
#10
T Aydin, N Bayrak, E Baran, A Cakir
Insecticidal effects of the dichloromethane, ethyl acetate, acetone, ethanol and methanol extracts of Humulus lupulus (hops) L. cones and its principal components, xanthohumol was investigated on five stored pests, Sitophilus granarius (L.), Sitophilus oryzae (L.), Acanthoscelides obtectus (Say.), Tribolium castaneum (Herbst) and Lasioderma serricorne (F.). The mortality of adults of the insects treated with 2, 5, 5, 10 and 20 mg ml̠-1 concentrations of the extracts and xanthuhumol was counted after 24, 48, 72, 96 and 120 h...
March 23, 2017: Bulletin of Entomological Research
https://www.readbyqxmd.com/read/28330346/a-new-approach-to-molecular-dynamics-with-non-adiabatic-and-spin-orbit-effects-with-applications-to-qm-mm-simulations-of-thiophene-and-selenophene
#11
Marek Pederzoli, Jiří Pittner
We present surface hopping dynamics on potential energy surfaces resulting from the spin-orbit splitting, i.e., surfaces corresponding to the eigenstates of the total electronic Hamiltonian including the spin-orbit coupling. In this approach, difficulties arise because of random phases of degenerate eigenvectors and possibility of crossings of the resulting mixed states. Our implementation solves these problems and allows propagation of the coefficients both in the representation of the spin free Hamiltonian and directly in the "diagonal representation" of the mixed states...
March 21, 2017: Journal of Chemical Physics
https://www.readbyqxmd.com/read/28327627/entropic-origin-of-pseudogap-physics-and-a-mott-slater-transition-in-cuprates
#12
R S Markiewicz, I G Buda, P Mistark, C Lane, A Bansil
We propose a new approach to understand the origin of the pseudogap in the cuprates, in terms of bosonic entropy. The near-simultaneous softening of a large number of different q-bosons yields an extended range of short-range order, wherein the growth of magnetic correlations with decreasing temperature T is anomalously slow. These entropic effects cause the spectral weight associated with the Van Hove singularity (VHS) to shift rapidly and nearly linearly toward half filling at higher T, consistent with a picture of the VHS driving the pseudogap transition at a temperature ~T*...
March 22, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28325809/the-rab7-effector-plekhm1-binds-arl8b-to-promote-cargo-traffic-to-lysosomes
#13
Rituraj Marwaha, Subhash B Arya, Divya Jagga, Harmeet Kaur, Amit Tuli, Mahak Sharma
Endocytic, autophagic, and phagocytic vesicles move on microtubule tracks to fuse with lysosomes. Small GTPases, such as Rab7 and Arl8b, recruit their downstream effectors to mediate this transport and fusion. However, the potential cross talk between these two GTPases is unclear. Here, we show that the Rab7 effector PLEKHM1 simultaneously binds Rab7 and Arl8b, bringing about clustering and fusion of late endosomes and lysosomes. We show that the N-terminal RUN domain of PLEKHM1 is necessary and sufficient for interaction with Arl8b and its subsequent localization to lysosomes...
March 21, 2017: Journal of Cell Biology
https://www.readbyqxmd.com/read/28321428/high-grade-partial-and-retracted-2-cm-proximal-hamstring-ruptures-nonsurgical-treatment-revisited
#14
Jonathan R Piposar, Amrit V Vinod, Joshua R Olsen, Edward Lacerte, Suzanne L Miller
BACKGROUND: High-grade partial proximal hamstring tears and complete tears with retraction less than 2 cm are a subset of proximal hamstring injuries where, historically, treatment has been nonoperative. It is unknown how nonoperative treatment compares with operative treatment. HYPOTHESIS: The clinical and functional outcomes of nonoperative and operative treatment of partial/complete proximal hamstring tears were compared. We hypothesize that operative treatment of these tears leads to better clinical and functional results...
February 2017: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/28320905/insights-into-the-deactivation-of-5-bromouracil-after-ultraviolet-excitation
#15
Francesca Peccati, Sebastian Mai, Leticia González
5-Bromouracil is a nucleobase analogue that can replace thymine in DNA strands and acts as a strong radiosensitizer, with potential applications in molecular biology and cancer therapy. Here, the deactivation of 5-bromouracil after ultraviolet irradiation is investigated in the singlet and triplet manifold by accurate quantum chemistry calculations and non-adiabatic dynamics simulations. It is found that, after irradiation to the bright ππ* state, three main relaxation pathways are, in principle, possible: relaxation back to the ground state, intersystem crossing (ISC) and C-Br photodissociation...
April 28, 2017: Philosophical Transactions. Series A, Mathematical, Physical, and Engineering Sciences
https://www.readbyqxmd.com/read/28318604/comparison-of-whole-body-vertical-stiffness-and-leg-stiffness-during-single-leg-hopping-in-place-in-children-and-adults
#16
Matthew Beerse, Jianhua Wu
In the hopping literature, whole-body vertical stiffness and leg stiffness are used interchangeably, due to most of the movement occurring in the vertical direction. However, there is some anterior/posterior movement of the center of mass and displacements of the foot during hopping in place in both children and adults. Further it is not understood if leg stiffness show a similar pattern as whole-body vertical stiffness when increasing hopping frequency. The purpose of this study was to test if whole-body vertical stiffness and leg stiffness are different during single-leg hopping in-place in children and adults, across a range of frequencies...
March 9, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/28318255/excited-state-decay-paths-in-tetraphenylethene-derivatives
#17
Yuan-Jun Gao, Xue-Ping Chang, Xiang-Yang Liu, Quan-Song Li, Ganglong Cui, Walter Thiel
The photophysical properties of tetraphenylethene (TPE) compounds may differ widely depending on the substitution pattern, for example with regard to the fluorescence quantum yield phi_f and the propensity to exhibit aggregation-induced emission (AIE). We report combined electronic structure calculations and nonadiabatic dynamics simulations to study the excited-state decay mechanisms of two TPE derivatives with four methyl substituents, either in meta-position (TPE-4mM, phi_f = 0.1%) or in ortho-position (TPE-4oM, phi_f = 64...
March 20, 2017: Journal of Physical Chemistry. A
https://www.readbyqxmd.com/read/28318001/contrasting-diffusion-behaviors-of-o-and-f-atoms-on-graphene-and-within-bilayer-graphene
#18
Seho Yi, Jin-Ho Choi, Hyun-Jung Kim, Chul Hong Park, Jun-Hyung Cho
Chemical modification of graphene with adatoms is of importance for nanoelectronics applications. Based on first-principles density-functional theory calculations including van der Waals interactions, we present a comparative study of the diffusion characteristics of oxygen (O) and fluorine (F) atoms both on graphene and between the layers of bilayer graphene. We find that the calculated diffusion barrier for the O atom increases slightly from 0.81 eV on graphene to 0.85 eV within bilayer graphene, while that for the F atom largely decreases from 0...
March 20, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28315448/scaffold-hopping-identifies-6-8-disubstituted-purines-as-novel-anaplastic-lymphoma-kinase-inhibitors
#19
Laura Schlütke, Markus Immer, Lutz Preu, Frank Totzke, Christoph Schächtele, Michael H G Kubbutat, Conrad Kunick
Rearrangements of anaplastic lymphoma kinase (ALK) are associated with several cancer diseases. Due to resistance development against existing ALK-inhibitors, new, structurally unrelated inhibitors are required. By a scaffold hopping strategy, 6,8-disubstituted purines were designed as analogues of similar ALK-inhibiting thieno[3,2-d]pyrimidines. While the new title compounds indeed inhibited ALK and several ALK mutants in submicromolar concentrations, they retained poor water solubility.
March 14, 2017: European Journal of Pharmaceutics and Biopharmaceutics
https://www.readbyqxmd.com/read/28306502/pacer-mediates-the-function-of-class-iii-pi3k-and-hops-complexes-in-autophagosome-maturation-by-engaging-stx17
#20
Xiawei Cheng, Xiuling Ma, Xianming Ding, Lin Li, Xiao Jiang, Zhirong Shen, She Chen, Wei Liu, Weihua Gong, Qiming Sun
Class III PI3-kinase (PI3KC3) is essential for autophagy initiation, but whether PI3KC3 participates in other steps of autophagy remains unknown. The HOPS complex mediates the fusion of intracellular vesicles to lysosome, but how HOPS specifically tethers autophagosome to lysosome remains elusive. Here, we report Pacer (protein associated with UVRAG as autophagy enhancer) as a regulator of autophagy. Pacer localizes to autophagic structures and positively regulates autophagosome maturation. Mechanistically, Pacer antagonizes Rubicon to stimulate Vps34 kinase activity...
March 16, 2017: Molecular Cell
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