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Trap 1

Alexander Arévalo-Sandi, Paulo Estefano D Bobrowiec, Victor Juan Ulises Rodriguez Chuma, Darren Norris
There is increasing interest in the restoration/regeneration of degraded tropical habitats yet the potential role of natural regenerators remains unclear. We test the hypothesis that the richness and functional diversity of terrestrial mammals differs between forest regrowth stages. We quantified the richness and functional diversity of eight terrestrial mammal seed-disperser species across a forest regrowth gradient in the eastern Brazilian Amazon. We installed camera-traps in 15 sites within small-holder properties with forest regrowth stage classified into three groups, with five sites each of: late second-regrowth forest, early second-regrowth forest and abandoned pasture...
2018: PloS One
Sen Xu, Xiaofeng Fan, Jialin Liu, David J Singh, Qing Jiang, Weitao Zheng
We report an investigation of the interactions of Li with silicene. We find silicene to be a promising anode material for high energy density lithium-ion batteries. Based on first-principles calculations, we study the interaction between Li and silicene and explore the microscopic mechanism of Li storage on silicene. We find that Li ion is adsorbed on hollow sites at a very low concentration of less than 1.56%. At a high concentration of Li, the Li chains with up-down pairs on top sites become popular. With the formation of the Li chains, the local structure of silicene is modulated...
March 16, 2018: Physical Chemistry Chemical Physics: PCCP
Jonathan H Chung, Justin M Oldham, Steven M Montner, Rekha Vij, Ayodeji Adegunsoye, Aliya N Husain, Imre Noth, David A Lynch, Mary E Strek
OBJECTIVE: The purpose of this study was to assess the diagnostic significance of CT patterns that cannot be classified according to current idiopathic pulmonary fibrosis (IPF) guidelines and of specific findings of the inconsistent with usual interstitial pneumonitis (UIP) pattern. MATERIALS AND METHODS: Subjects with a multidisciplinary diagnosis of interstitial lung disease who had undergone surgical lung biopsy and chest CT within 1 year of each other were included in the study...
March 16, 2018: AJR. American Journal of Roentgenology
Donatella Pietraforte, Eleonora Paulicelli, Clarice Patrono, Lucrezia Gambardella, Giuseppe Scorza, Antonella Testa, Paola Fattibene
Reactive oxygen species (ROS) are important mediators of the cytotoxicity induced by the direct reaction of ionising radiation (IR) with all critical cellular components, such as proteins, lipids, and nucleic acids. The derived oxidative damage may propagate in exposed tissues in a dose- and spatiotemporal dependent manner to other cell compartments, affecting intracellular signalling, and cell fate. To understand how cell damage is induced, we studied the oxidative events occurring immediately after cell irradiation by analysing the fate of IR-derived ROS, the intracellular oxidative damage, and the modification of redox environment accumulating in Chinese hamster ovary (CHO) within 1 h after cell irradiation (dose range 0-10 Gy)...
March 16, 2018: Free Radical Research
Davide Bartesaghi, Adam H Slavney, María C Gélvez-Rueda, Bridget A Connor, Ferdinand C Grozema, Hemamala I Karunadasa, Tom J Savenije
Double perovskites, comprising two different cations, are potential nontoxic alternatives to lead halide perovskites. Here, we characterized thin films and crystals of Cs2 AgBiBr6 by time-resolved microwave conductance (TRMC), which probes formation and decay of mobile charges upon pulsed irradiation. Optical excitation of films results in the formation of charges with a yield times mobility product, φΣμ > 1 cm2 /Vs. On excitation of millimeter-sized crystals, the TRMC signals show, apart from a fast decay, a long-lived tail...
March 8, 2018: Journal of Physical Chemistry. C, Nanomaterials and Interfaces
Hanfei Tang, Xiao Tang, Weiguo Fu, Jianjun Luo, Zhenyu Shi, Lixin Wang, Fei Liu, Daqiao Guo
OBJECTIVE: Coil embolization is one of the most common endovascular approaches to treatment of renal artery aneurysms (RAAs). The purpose of this retrospective study was to compare complications, mortality, and morbidity associated with sac packing, coil trapping, and inflow occlusion. METHODS: The records of all patients with RAAs treated with coil embolization at our center from June 2003 to May 2017 were retrospectively reviewed. Demographics of the patients, aneurysm characteristics, management strategies, perioperative and long-term outcomes, and complications were analyzed...
March 12, 2018: Journal of Vascular Surgery
K N Jarvis, J A Devlin, T E Wall, B E Sauer, M R Tarbutt
We present the properties and advantages of a new magneto-optical trap (MOT) where blue-detuned light drives "type-II" transitions that have dark ground states. Using ^{87}Rb, we reach a radiation-pressure-limited density exceeding 10^{11}  cm^{-3} and a temperature below 30  μK. The phase-space density is higher than in normal atomic MOTs and a million times higher than comparable red-detuned type-II MOTs, making the blue-detuned MOT particularly attractive for molecular MOTs, which rely on type-II transitions...
February 23, 2018: Physical Review Letters
Sopheavy Siek, Dalton B Burks, Deidra L Gerlach, Guangchao Liang, Jamie M Tesh, Courtney R Thompson, Fengrui Qu, Jennifer E Shankwitz, Robert M Vasquez, Nicole Chambers, Gregory J Szulczewski, Douglas B Grotjahn, Charles Edwin Webster, Elizabeth T Papish
Hydrogenation reactions can be used to store energy in chemical bonds, and if these reactions are reversible, that energy can be released on demand. Some of the most effective transition metal catalysts for CO2 hydrogenation have featured pyridin-2-ol-based ligands (e.g., 6,6'-dihydroxybipyridine (6,6'-dhbp)) for both their proton-responsive features and for metal-ligand bifunctional catalysis. We aimed to compare bidentate pyridin-2-ol based ligands with a new scaffold featuring an N -heterocyclic carbene (NHC) bound to pyridin-2-ol...
March 27, 2017: Organometallics
Takashi Baba, J Larry Campbell, J C Yves Le Blanc, Paul R S Baker, Kazutaka Ikeda
We report a method for comprehensive structural characterization of lipids in animal tissues using a combination of differential Ion mobility spectrometry (DMS) with electron-impact excitation of ions from organics (EIEIO) mass spectrometry. Singly charged lipid ions in protonated or sodiated forms were dissociated by an electron beam having a kinetic energy of 10 eV in a branched radio-frequency ion trap. We established a comprehensive set of diagnostics to characterize structures of glycerophospholipids, sphingolipids, and acylglycerols, including glycosylated, plasmalogen, and ester forms...
March 14, 2018: Journal of Lipid Research
Wataro Tsuruta, Tetsuya Yamamoto, Go Ikeda, Masayuki Sato, Yoshiro Ito, Tomoji Takigawa, Aiki Marushima, Yasunobu Nakai, Yuji Matsumaru, Akira Matsumura
BACKGROUND: Endovascular surgery for vertebral artery dissections (VADs) carries the risk of spinal cord infarction (SCI). Although SCI in the region of the anterior spinal artery (ASA) has been reported, SCI in the region of the posterior spinal artery (PSA) is rare. OBJECTIVE: To investigate PSA infarction after endovascular surgery for VAD. METHODS: Infarction in the region of the PSA after endovascular surgery for VADs carried out in consecutive 21 cases was investigated...
March 9, 2018: Operative Neurosurgery (Hagerstown, Md.)
Lu Huang, Yin Chen, Wei Huang, Hongkai Wu
Here a convenient and effective strategy of two-step centrifugation-assisted single-cell trapping (CAScT) based on an addressable truncated cone-shaped microwell array (TCMA) chip is developed for cell pairing. We describe the operation principles of the method and demonstrate its compatibility with polyethylene glycol (PEG)-mediated cell fusion. Compared with other methods, most of which rely on sophisticated devices and bulky subsidiary equipment, our method is more convenient and exhibits better or comparable performance...
March 14, 2018: Lab on a Chip
M T Adil, C Konstantinou, D J Porter, S Dolan
Objective: Quad bike or all-terrain vehicle (ATV) related injuries are a significant cause of trauma and may present with severe or fatal injuries. Most of the literature describing ATV related injuries come from North America and Australasia and data from the United Kingdom is scarce despite a high prevalence of ATV use. The aim of this study was to describe our single centre experience with ATV injuries over a 6-year period from 2010 to 2015. Materials and Methods: This is a cohort analysis of 65 patients who presented with ATV related injuries in South West Acute Hospital, UK between 2010 and 2015...
May 2017: Ulster Medical Journal
Frederick Hakelberg, Philip Kiefer, Matthias Wittemer, Tobias Schaetz, Ulrich Warring
Well controlled and highly stable magnetic fields are desired for a wide range of applications in physical research, including quantum metrology, sensing, information processing, and simulation. Here we introduce a low-cost hybrid assembly of rare-earth magnets and magnetic field coils to generate a field strength of [Formula: see text]10.9 mT with a calculated spatial variation of less than 10-6 within a diameter of spherical volume of 150 μm. We characterise its tuneability and stability performance using a single Mg+ atom confined in a radio-frequency surface-electrode trap under ultra-high vacuum conditions...
March 13, 2018: Scientific Reports
Colleen Edith Archer, M Corrie Schoeman, Christopher Charles Appleton, Samson Mukaratirwa, Karen J Hope, Glenda Beverly Matthews
This study investigated associations between Trypanosoma lewisi; Xenopsylla cheopis, a common cyclical vector of T. lewisi; Polyplax spinulosa, a reported mechanical vector; and Laelaps ecidnina and L. lamborni, two rodent mites of Rattus norvegicus in Durban. Three hundred and seventy nine R. norvegicus were live-trapped at 48 sites in 4 locality types of Durban during a one year period. Rats were euthanized, cardiac blood was taken to check for hemoparasites and ectoparasites were removed for identification...
March 13, 2018: Journal of Parasitology
Seung Min Jung, Jaeseon Lee, Seung Ye Baek, Juhyun Lee, Se Gwang Jang, Seung-Min Hong, Jin-Sil Park, Mi-La Cho, Sung-Hwan Park, Seung-Ki Kwok
This study aimed to evaluate the therapeutic effect of fraxinellone on inflammatory arthritis and identify the underlying mechanisms. Fraxinellone (7.5 mg/kg) or a vehicle control was injected into mice with collagen-induced arthritis (CIA). The severity of arthritis was evaluated clinically and histologically. The differentiation of CD4⁺ T cells and CD19⁺ B cells was investigated in the presence of fraxinellone. Osteoclastogenesis after fraxinellone treatment was evaluated by staining with tartrate-resistant acid phosphatase (TRAP) and by measuring the mRNA levels of osteoclastogenesis-related genes...
March 13, 2018: International Journal of Molecular Sciences
M Wolf, M Ao, M B Chavez, T N Kolli, V Thumbigere-Math, K Becker, E Y Chu, A Jäger, M J Somerman, B L Foster
Previous studies revealed that cementum formation is tightly regulated by inorganic pyrophosphate (PPi ), a mineralization inhibitor. Local PPi concentrations are determined by regulators, including ectonucleotide pyrophosphatase/phosphodiesterase 1 (ENPP1), which increases PPi concentrations by adenosine triphosphate hydrolysis. Orthodontic forces stimulate alveolar bone remodelling, leading to orthodontic tooth movement (OTM). To better understand how disturbed mineral metabolism and the resulting altered periodontal structures affect OTM, we employed Enpp1 mutant mice that feature reduced PPi and increased cervical cementum in a model of OTM induced by a stretched closed-coil spring ligated between the maxillary left first molar and maxillary incisors...
March 1, 2018: Journal of Dental Research
Wei Sun, Lu Wang, Chungu Xia, Chao Liu
Dual functionalization of 1,1-diborylalkanes via a deoxygenative enolization with carboxylic acids strategy has been developed for the first time. 1,1-Diborylalkanes were activated by MeLi to generate α-monoboryl carbanion. In-situ IR spectroscopy exhibited the interaction between carboxylic acid and 1,1-diborylalkane before adding activation reagent. The release of active α-monoboryl carbanion from its masked form was necessary for its reaction with carboxylate to afford enolate species. Electrophilic trapping of enolate species with various electrophiles achieved dual functionalization of 1,1-diborylalkanes to afford a variety of α-mono, di- and tri-substituted ketones...
March 13, 2018: Angewandte Chemie
Mostafa Ramadhan Dokhan, Kaouther Jaouadi, Sadok Salem, Osama Zenbil, Jean Paul Gonzalez, Afif Ben Salah, Badreddin Bashir Annajar
Cutaneous leishmaniasis (CL) is a public health concern caused by Leishmania ( L. ) major and ( L. ) tropica in Libya. Information on sandfly vectors, as well as their associated Leishmania species, is of paramount importance because vector dispersion is one of the major factors responsible for pathogen dissemination. A number of 515 sandflies (275 males and 240 females) were collected during June-November 2012 using the CDC miniature light traps from Al Rabta, northwest of Libya. Two hundred and forty unfed females were identified; Phlebotomus ( Ph...
March 12, 2018: American Journal of Tropical Medicine and Hygiene
Bryony Sands, Neludo Mgidiswa, Casper Nyamukondiwa, Richard Wall
Pyrethroid insecticides are widely used to control ectoparasites of livestock, particularly ticks and biting flies. Their use in African livestock systems is increasing, driven by the need to increase productivity and local food security. However, insecticide residues present in the dung after treatment are toxic to dung-inhabiting insects. In a semiarid agricultural habitat in Botswana, dung beetle adult mortality, brood ball production, and larval survival were compared between untreated cattle dung and cattle dung spiked with deltamethrin, to give concentrations of 0...
March 2018: Ecology and Evolution
Charles J Underwood, Kyuha Choi, Christophe Lambing, Xiaohui Zhao, Heïdi Serra, Filipe Borges, Joe Simorowski, Evan Ernst, Yannick Jacob, Ian R Henderson, Robert A Martienssen
Eukaryotic centromeres contain the kinetochore, which connects chromosomes to the spindle allowing segregation. During meiosis, centromeres are suppressed for inter-homolog crossover, as recombination in these regions can cause chromosome missegregation and aneuploidy. Plant centromeres are surrounded by transposon-dense pericentromeric heterochromatin that is epigenetically silenced by histone 3 lysine 9 dimethylation (H3K9me2), and DNA methylation in CG and non-CG sequence contexts. However, the role of these chromatin modifications in control of meiotic recombination in the pericentromeres is not fully understood...
March 12, 2018: Genome Research
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