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https://www.readbyqxmd.com/read/28107517/high-emigration-propensity-and-low-mortality-on-transfer-drives-female-biased-dispersal-of-pyriglena-leucoptera-in-fragmented-landscapes
#1
Marcelo Awade, Carlos Candia-Gallardo, Cintia Cornelius, Jean Paul Metzger
Dispersal is a biological process performed in three stages: emigration, transfer and immigration. Intra-specific variation on dispersal behavior, such as sex-bias, is very common in nature, particularly in birds and mammals. However, dispersal is difficult to measure in the field and many hypotheses concerning the causes of sex-biased dispersal remain without empirical confirmation. An important limitation of most empirical studies is that inferences about sex-biased dispersal are based only on emigration proneness or immigration success data...
2017: PloS One
https://www.readbyqxmd.com/read/28107485/better-visual-outcome-by-intraocular-lens-ejection-in-geriatric-patients-with-ruptured-ocular-injuries
#2
Hiroki Kaneko, Tetsu Asami, Tadasu Sugita, Taichi Tsunekawa, Toshiyuki Matsuura, Kei Takayama, Kentaro Yamamoto, Shu Kachi, Yasuki Ito, Shinji Ueno, Norie Nonobe, Keiko Kataoka, Ayana Suzumura, Takeshi Iwase, Hiroko Terasaki
Ocular trauma is one of the leading causes of visual impairment worldwide. Because of the popularity of cataract surgeries, aged individuals with ocular trauma commonly have a surgical wound in their eyes. The purpose of this study was to evaluate the visual outcome of cases that were coincident with intraocular lens (IOL) ejection in the eyes with ruptured open-globe ocular injuries. Consecutive patients with open-globe ocular injuries were first reviewed. Patients' characteristics, corrected distance visual acuities (CDVAs) over 3 years after the trauma, causes of injuries, traumatic wound patterns, and coexistence of retinal detachment were examined...
2017: PloS One
https://www.readbyqxmd.com/read/28107435/peptide-targeted-by-human-antibodies-associated-with-hiv-vaccine-associated-protection-assumes-a-dynamic-%C3%AE-helical-structure
#3
Mohammed S Aiyegbo, Evgeny Shmelkov, Lorenzo Dominguez, Michael Goger, Shibani Battacharya, Allan C deCamp, Peter B Gilbert, Phillip W Berman, Timothy Cardozo
The only evidence of vaccine-induced protection from HIV acquisition in humans was obtained in the RV144 HIV vaccine clinical trial. One immune correlate of risk in RV144 was observed to be higher titers of vaccine-induced antibodies (Abs) reacting with a 23-mer non-glycosylated peptide with the same amino acid sequence as a segment in the second variable (V2) loop of the MN strain of HIV. We used NMR to analyze the dynamic 3D structure of this peptide. Distance restraints between spatially proximate inter-residue protons were calculated from NOE cross peak intensities and used to constrain a thorough search of all possible conformations of the peptide...
2017: PloS One
https://www.readbyqxmd.com/read/28107368/multi-channel-optical-coherence-elastography-using-relative-and-absolute-shear-wave-time-of-flight
#4
Eli Elyas, Alex Grimwood, Janine T Erler, Simon P Robinson, Thomas R Cox, Daniel Woods, Peter Clowes, Ramona De Luca, Franco Marinozzi, Jérémie Fromageau, Jeffrey C Bamber
Elastography, the imaging of elastic properties of soft tissues, is well developed for macroscopic clinical imaging of soft tissues and can provide useful information about various pathological processes which is complementary to that provided by the original modality. Scaling down of this technique should ply the field of cellular biology with valuable information with regard to elastic properties of cells and their environment. This paper evaluates the potential to develop such a tool by modifying a commercial optical coherence tomography (OCT) device to measure the speed of shear waves propagating in a three-dimensional (3D) medium...
2017: PloS One
https://www.readbyqxmd.com/read/28107354/visual-adaptations-for-mate-detection-in-the-male-carpenter-bee-xylocopa-tenuiscapa
#5
Hema Somanathan, Renee Maria Borges, Eric J Warrant, Almut Kelber
Sexual dimorphism in eye structure is attributed to sexual selection in animals that employ vision for locating mates. In many male insects, large eyes and eye regions of higher acuity are believed to facilitate the location of females. Here, we compare various features of male and female eyes in three sympatric carpenter bee species, which include two diurnal species (Xylocopa tenuiscapa and X. leucothorax) as well as a nocturnal species (X. tranquebarica). In X. tenuiscapa, males have larger eyes than females, while in the nocturnal X...
2017: PloS One
https://www.readbyqxmd.com/read/28107314/effect-of-treatment-with-twin-block-appliances-on-body-posture-in-class-ii-malocclusion-subjects-a-prospective-clinical-study
#6
Dalia Smailienė, Aistė Intienė, Irma Dobradziejutė, Gintaras Kušleika
BACKGROUND There is strong evidence that malocclusion and body posture are interdependent. The relationship between improvement of nasopharyngeal airway, correction of malocclusion by orthodontic treatment or orthognathic surgery, and changes in body posture were evaluated in several studies. The purpose of the present study was to analyze the effect of the orthodontic treatment with Twin-block appliance on body posture. MATERIAL AND METHODS The study group consisted of 23 children (mean age 12.45 (1.06) years)...
January 20, 2017: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/28107088/the-national-eye-survey-of-trinidad-and-tobago-nestt-rationale-objectives-and-methodology
#7
Tasanee Braithwaite, Neville Q Verlander, Debra Bartholomew, Petra Bridgemohan, Kevin McNally, Allana Roach, Subash Sharma, Deo Singh, Konrad Pesudovs, Surujpal Teelucksingh, Christine Carrington, Samuel Ramsewak, Rupert Bourne
PURPOSE: This paper describes the rationale, study design and procedures of the National Eye Survey of Trinidad and Tobago (NESTT). The main objective of this survey is to obtain prevalence estimates of vision impairment and blindness for planning and policy development. METHODS: A population-based, cross-sectional survey was undertaken using random multistage cluster sampling, with probability-proportionate-to-size methods. Eligible participants aged 5 years and older were sampled from the non-institutional population in each of 120 cluster segments...
January 20, 2017: Ophthalmic Epidemiology
https://www.readbyqxmd.com/read/28107077/evaluation-of-cardiac-size-in-the-common-kestrel-falco-tinnunculus-based-on-radiographic-measurements
#8
Ali Mirshahi, Mahnaz Shariatzadeh, Jamshid Razmyar, Mohammad Azizzadeh
The common kestrel ( Falco tinnunculus ) is a common raptor found worldwide. To establish reference intervals for cardiac size by radiography, 14 adult common kestrels were evaluated clinically and with radiographs (lateral and ventrodorsal views). The cardiac width, thoracic width, distance between third and fourth ribs, synsacrum width, coracoid width, and distance between clavicle bones were measured on ventrodorsal radiographs. The ratio between cardiac width and the other 5 indices was calculated. Results showed a significant, positive correlation between the cardiac width and thoracic width and between cardiac width and coracoid width...
December 2016: Journal of Avian Medicine and Surgery
https://www.readbyqxmd.com/read/28107059/age-dependent-modulation-of-songbird-summer-feather-molt-by-temporal-and-functional-constraints
#9
Yosef Kiat, Nir Sapir
Time constraints influence various ecological, life-history, and demographic properties of individuals and populations of many species throughout the annual cycle. Feather molt is a timely undertaking that is considered among the three most energy-demanding processes in the life cycle of birds. To deal with time pressure, passerines may shorten their molt duration, using three non-mutually exclusive mechanisms: (1) replacing only part of the plumage, (2) increasing the speed of molt, and (3) postponing the renewal of some or all the plumage to a later season (i...
February 2017: American Naturalist
https://www.readbyqxmd.com/read/28106939/maximizing-output-in-rna-programmed-peptidyl-transfer-reactions
#10
Margherita Di Pisa, Anett Hauser, Oliver Seitz
A chemical reaction that is triggered by specific RNA molecules may provide opportunities for the design of artificial feedback loops. We envision a peptidyl transfer reaction, in which mRNA encoding for antiapoptotic protein would instruct the synthesis of apoptosis-inducing peptides. In this study, we tackled the RNA-programmed synthesis of a 16mer peptide derived from the Bak-BH3 protein which inhibits the antiapoptotic protein Bcl-xL. The reaction involves the transfer of a thioester-linked donor peptide fragment from one PNA conjugate onto an acceptor peptide-PNA conjugate...
January 20, 2017: Chembiochem: a European Journal of Chemical Biology
https://www.readbyqxmd.com/read/28106929/conformational-analysis-of-an-antibacterial-cyclodepsipeptide-active-against-m-tuberculosis-by-a-combined-roe-and-rdc-analysis
#11
Maic Fredersdorf, Michael Kurz, Armin Bauer, Marc-Olivier Ebert, Carla Rigling, Laurie Lannes, Christina Thiele
Griselimycin (GM) and methylgriselimycin (MGM), naturally produced by microorganisms of the genus Streptomyces, are cyclic depsipeptides composed of ten amino acids. They exhibit antibacterial activity against mycobacterium species by inhibiting the sliding clamp of prokaryotic DNA polymerase III and are therefore considered as potential anti-tuberculosis drugs. The difference between both peptides is the presence of L -(R)-4-methylproline in MGM instead of L -proline in GM at position 8 of the amino acid sequence...
January 20, 2017: Chemistry: a European Journal
https://www.readbyqxmd.com/read/28106890/assessment-of-a-new-hydrophilic-acrylic-supplementary-iol-for-sulcus-fixation-in-pseudophakic-cadaver-eyes
#12
N Reiter, L Werner, J Guan, J Li, K T Tsaousis, N Mamalis, S Srinivasan
PurposeManagement of refractive errors after cataract surgery includes spectacles or contact lens, secondary laser vision correction, intraocular lens (IOL) exchange, or piggyback lens implantation. We evaluated for the first time a single-piece hydrophilic acrylic IOL designed for supplementary sulcus fixation in postmortem pseudophakic human eyes.MethodsPseudophakic human cadaver eyes were imaged by anterior segment optical coherence tomography (AS-OCT) to assess position of the primary IOL. Eyes were prepared as per the Miyake-Apple technique...
January 20, 2017: Eye
https://www.readbyqxmd.com/read/28106843/underwater-electromagnetic-sensor-networks-part-i-link-characterization
#13
Gara Quintana-Díaz, Pablo Mena-Rodríguez, Iván Pérez-Álvarez, Eugenio Jiménez, Blas-Pablo Dorta-Naranjo, Santiago Zazo, Marina Pérez, Eduardo Quevedo, Laura Cardona, J Joaquín Hernández
Underwater Wireless Sensor Networks (UWSNs) using electromagnetic (EM) technology in marine shallow waters are examined, not just for environmental monitoring but for further interesting applications. Particularly, the use of EM waves is reconsidered in shallow waters due to the benefits offered in this context, where acoustic and optical technologies have serious disadvantages. Sea water scenario is a harsh environment for radiocommunications, and there is no standard model for the underwater EM channel. The high conductivity of sea water, the effect of seabed and the surface make the behaviour of the channel hard to predict...
January 19, 2017: Sensors
https://www.readbyqxmd.com/read/28106837/a-distributed-and-energy-efficient-algorithm-for-event-k-coverage-in-underwater-sensor-networks
#14
Peng Jiang, Yiming Xu, Jun Liu
For event dynamic K-coverage algorithms, each management node selects its assistant node by using a greedy algorithm without considering the residual energy and situations in which a node is selected by several events. This approach affects network energy consumption and balance. Therefore, this study proposes a distributed and energy-efficient event K-coverage algorithm (DEEKA). After the network achieves 1-coverage, the nodes that detect the same event compete for the event management node with the number of candidate nodes and the average residual energy, as well as the distance to the event...
January 19, 2017: Sensors
https://www.readbyqxmd.com/read/28106694/the-endoscopic-prelacrimal-recess-approach-to-the-pterygopalatine-fossa-and-infratemporal-fossa
#15
Li Gao, Lei Zhou, Zhengshou Dai, Xinsheng Huang
PURPOSE: The authors studied the anatomic importance of the endoscopic prelacrimal recess approach (PLRA) to the pterygopalatine fossa (PPF) and infratemporal fossa (ITF). METHODS: Ten adult heads (20 sides) from cadavers fixed in formalin were dissected using the PLRA. Anatomic dissections were detailed and several crucial landmarks measured. RESULTS: Identification of the infraorbital neurovascular bundle is the crucial step for the detection of other branches of the maxillary artery...
January 18, 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28106610/-opt-out-and-access-to-anesthesia-care-for-elective-and-urgent-surgeries-among-u-s-medicare-beneficiaries
#16
Eric C Sun, Franklin Dexter, Thomas R Miller, Laurence C Baker
BACKGROUND: In 2001, the Centers for Medicare and Medicaid Services issued a rule allowing U.S. states to "opt out" of the regulations requiring physician supervision of nurse anesthetists in an effort to increase access to anesthesia care. Whether "opt out" has successfully achieved this goal remains unknown. METHODS: Using Medicare administrative claims data, we examined whether "opt out" reduced the distance traveled by patients, a common measure of access, for patients undergoing total knee arthroplasty, total hip arthroplasty, cataract surgery, colonoscopy/sigmoidoscopy, esophagogastroduodenoscopy, appendectomy, or hip fracture repair...
January 19, 2017: Anesthesiology
https://www.readbyqxmd.com/read/28106578/imia-educational-recommendations-and-nursing-informatics
#17
John Mantas, Arie Hasman
The updated version of the IMIA educational recommendations has given an adequate guidelines platform for developing educational programs in Biomedical and Health Informatics at all levels of education, vocational training, and distance learning. This chapter will provide a brief introduction of the recommendations pinpointing aspects for developing and assessing educational programs. We will provide a review of the existing feedback we have acquired during the IMIA site visits of accrediting educational programs at a worldwide level and discuss implementations issues...
2017: Studies in Health Technology and Informatics
https://www.readbyqxmd.com/read/28106516/rural-end-of-life-care-from-the-experiences-and-perspectives-of-patients-and-family-caregivers-a-systematic-literature-review
#18
Suzanne Rainsford, Roderick D MacLeod, Nicholas J Glasgow, Christine B Phillips, Robert B Wiles, Donna M Wilson
BACKGROUND: End-of-life care must be relevant to the dying person and their family caregiver regardless of where they live. Rural areas are distinct and need special consideration. Gaining end-of-life care experiences and perspectives of rural patients and their family caregivers is needed to ensure optimal rural care. AIMS: To describe end-of-life care experiences and perspectives of rural patients and their family caregivers, to identify facilitators and barriers to receiving end-of-life care in rural/remote settings and to describe the influence of rural place and culture on end-of-life care experiences...
January 1, 2017: Palliative Medicine
https://www.readbyqxmd.com/read/28106450/nontrivial-role-of-interlayer-cation-states-in-iron-based-superconductors
#19
Daniel Guterding, Harald O Jeschke, I I Mazin, J K Glasbrenner, E Bascones, Roser Valentí
Unconventional superconductivity in iron pnictides and chalcogenides has been suggested to be controlled by the interplay of low-energy antiferromagnetic spin fluctuations and the particular topology of the Fermi surface in these materials. Based on this premise, one would also expect the large class of isostructural and isoelectronic iron germanide compounds to be good superconductors. As a matter of fact, they, however, superconduct at very low temperatures or not at all. In this work we establish that superconductivity in iron germanides is suppressed by strong ferromagnetic tendencies, which surprisingly do not originate from changes in bond angles or bond distances with respect to iron pnictides and chalcogenides, but are due to changes in the electronic structure in a wide range of energies happening upon substitution of atom species (As by Ge and the corresponding spacer cations)...
January 6, 2017: Physical Review Letters
https://www.readbyqxmd.com/read/28106445/quantum-mutual-information-as-a-probe-for-many-body-localization
#20
Giuseppe De Tomasi, Soumya Bera, Jens H Bardarson, Frank Pollmann
We demonstrate that the quantum mutual information (QMI) is a useful probe to study many-body localization (MBL). First, we focus on the detection of a metal-insulator transition for two different models, the noninteracting Aubry-André-Harper model and the spinless fermionic disordered Hubbard chain. We find that the QMI in the localized phase decays exponentially with the distance between the regions traced out, allowing us to define a correlation length, which converges to the localization length in the case of one particle...
January 6, 2017: Physical Review Letters
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