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https://www.readbyqxmd.com/read/28813023/accuracy-of-flight-altitude-measured-with-low-cost-gnss-radar-and-barometer-sensors-implications-for-airborne-radiometric-surveys
#1
Matteo Albéri, Marica Baldoncini, Carlo Bottardi, Enrico Chiarelli, Giovanni Fiorentini, Kassandra Giulia Cristina Raptis, Eugenio Realini, Mirko Reguzzoni, Lorenzo Rossi, Daniele Sampietro, Virginia Strati, Fabio Mantovani
Flight height is a fundamental parameter for correcting the gamma signal produced by terrestrial radionuclides measured during airborne surveys. The frontiers of radiometric measurements with UAV require light and accurate altimeters flying at some 10 m from the ground. We equipped an aircraft with seven altimetric sensors (three low-cost GNSS receivers, one inertial measurement unit, one radar altimeter and two barometers) and analyzed ~3 h of data collected over the sea in the (35-2194) m altitude range. At low altitudes (H < 70 m) radar and barometric altimeters provide the best performances, while GNSS data are used only for barometer calibration as they are affected by a large noise due to the multipath from the sea...
August 16, 2017: Sensors
https://www.readbyqxmd.com/read/28812933/use-of-bilayer-matrix-wound-dressing-in-the-exenterated-socket
#2
Leon Rafailov, Roger E Turbin, Paul D Langer
To describe the novel use of a bilayer dermal substitute to reconstruct exenterated orbits. A retrospective chart review was performed in the practices of two surgeons (RET and PDL) of all patients who had undergone orbital exenteration between April 2014 and June 2016 and whose subsequent reconstruction included lining the socket with Integra bilayer. Patient demographics, pathologic diagnoses, surgical and post-operative complications, graft integrity, and patient acceptance were recorded. The charts of 7 patients (4 men and 3 women, ages 60-87 years) were reviewed...
August 16, 2017: Orbit
https://www.readbyqxmd.com/read/28812745/hysteresis-and-bonding-reconstruction-in-the-pressure-induced-b3-b1-phase-transition-of-3c-sic
#3
Miguel A Salvadó, R Franco, Pilar Pertierra, T Ouahrani, J M Recio
The determination of kinetic factors affecting phase metastability is crucial for the design of materials out of the ambient conditions. At a given temperature, the kinetic barrier associated with the reconstruction of the bonding network of a pressure-induced phase transition can be only overcome at pressures where the available vibrational energy of the system is equal or higher than the corresponding activation energy. Our work demonstrates that these pressures provide boundaries to hysteresis cycles that can be evaluated following a three-step computational strategy: (i) total energy electronic structure calculations, (ii) determination of vibrational contributions by means of a simple Debye model, and (iii) description of the energetic profile along the transition path in the framework of the martensitic approximation...
August 16, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28812736/the-evolution-and-population-diversity-of-human-specific-segmental-duplications
#4
Megan Y Dennis, Lana Harshman, Bradley J Nelson, Osnat Penn, Stuart Cantsilieris, John Huddleston, Francesca Antonacci, Kelsi Penewit, Laura Denman, Archana Raja, Carl Baker, Kenneth Mark, Maika Malig, Nicolette Janke, Claudia Espinoza, Holly A F Stessman, Xander Nuttle, Kendra Hoekzema, Tina A Lindsay-Graves, Richard K Wilson, Evan E Eichler
Segmental duplications contribute to human evolution, adaptation and genomic instability but are often poorly characterized. We investigate the evolution, genetic variation and coding potential of human-specific segmental duplications (HSDs). We identify 218 HSDs based on analysis of 322 deeply sequenced archaic and contemporary hominid genomes. We sequence 550 human and nonhuman primate genomic clones to reconstruct the evolution of the largest, most complex regions with protein-coding potential (N = 80 genes from 33 gene families)...
February 17, 2017: Nature ecology & evolution
https://www.readbyqxmd.com/read/28812721/predicting-evolution
#5
Michael Lässig, Ville Mustonen, Aleksandra M Walczak
The face of evolutionary biology is changing: from reconstructing and analysing the past to predicting future evolutionary processes. Recent developments include prediction of reproducible patterns in parallel evolution experiments, forecasting the future of individual populations using data from their past, and controlled manipulation of evolutionary dynamics. Here we undertake a synthesis of central concepts for evolutionary predictions, based on examples of microbial and viral systems, cancer cell populations, and immune receptor repertoires...
February 21, 2017: Nature ecology & evolution
https://www.readbyqxmd.com/read/28812685/scallop-genome-provides-insights-into-evolution-of-bilaterian-karyotype-and-development
#6
Shi Wang, Jinbo Zhang, Wenqian Jiao, Ji Li, Xiaogang Xun, Yan Sun, Ximing Guo, Pin Huan, Bo Dong, Lingling Zhang, Xiaoli Hu, Xiaoqing Sun, Jing Wang, Chengtian Zhao, Yangfan Wang, Dawei Wang, Xiaoting Huang, Ruijia Wang, Jia Lv, Yuli Li, Zhifeng Zhang, Baozhong Liu, Wei Lu, Yuanyuan Hui, Jun Liang, Zunchun Zhou, Rui Hou, Xue Li, Yunchao Liu, Hengde Li, Xianhui Ning, Yu Lin, Liang Zhao, Qiang Xing, Jinzhuang Dou, Yangping Li, Junxia Mao, Haobing Guo, Huaiqian Dou, Tianqi Li, Chuang Mu, Wenkai Jiang, Qiang Fu, Xiaoteng Fu, Yan Miao, Jian Liu, Qian Yu, Ruojiao Li, Huan Liao, Xuan Li, Yifan Kong, Zhi Jiang, Daniel Chourrout, Ruiqiang Li, Zhenmin Bao
Reconstructing the genomes of bilaterian ancestors is central to our understanding of animal evolution, where knowledge from ancient and/or slow-evolving bilaterian lineages is critical. Here we report a high-quality, chromosome-anchored reference genome for the scallop Patinopecten yessoensis, a bivalve mollusc that has a slow-evolving genome with many ancestral features. Chromosome-based macrosynteny analysis reveals a striking correspondence between the 19 scallop chromosomes and the 17 presumed ancestral bilaterian linkage groups at a level of conservation previously unseen, suggesting that the scallop may have a karyotype close to that of the bilaterian ancestor...
April 3, 2017: Nature ecology & evolution
https://www.readbyqxmd.com/read/28812623/a-thousand-empirical-adaptive-landscapes-and-their-navigability
#7
José Aguilar-Rodríguez, Joshua L Payne, Andreas Wagner
The adaptive landscape is an iconic metaphor that pervades evolutionary biology. It was mostly applied in theoretical models until recent years, when empirical data began to allow partial landscape reconstructions. Here, we exhaustively analyse 1,137 complete landscapes from 129 eukaryotic species, each describing the binding affinity of a transcription factor to all possible short DNA sequences. We find that the navigability of these landscapes through single mutations is intermediate to that of additive and shuffled null models, suggesting that binding affinity-and thereby gene expression-is readily fine-tuned via mutations in transcription factor binding sites...
January 23, 2017: Nature ecology & evolution
https://www.readbyqxmd.com/read/28812605/experimental-test-and-refutation-of-a-classic-case-of-molecular-adaptation-in-drosophila-melanogaster
#8
Mohammad A Siddiq, David W Loehlin, Kristi L Montooth, Joseph W Thornton
Identifying the genetic basis for adaptive differences between species requires explicit tests of historical hypotheses concerning the effects of past changes in gene sequence on molecular function, organismal phenotype and fitness. We address this challenge by combining ancestral protein reconstruction with biochemical experiments and physiological analysis of transgenic animals that carry ancestral genes. We tested a widely held hypothesis of molecular adaptation-that changes in the alcohol dehydrogenase protein (ADH) along the lineage leading to Drosophila melanogaster increased the catalytic activity of the enzyme and thereby contributed to the ethanol tolerance and adaptation of the species to its ethanol-rich ecological niche...
January 13, 2017: Nature ecology & evolution
https://www.readbyqxmd.com/read/28812601/recent-extinctions-disturb-path-to-equilibrium-diversity-in-caribbean-bats
#9
Luis Valente, Rampal S Etienne, Liliana M Dávalos
Islands are ideal systems to model temporal changes in biodiversity and reveal the influence of humans on natural communities. Although theory predicts biodiversity on islands tends towards an equilibrium value, the recent extinction of large proportions of island biotas complicates testing this model. The well-preserved subfossil record of Caribbean bats-involving multiple insular radiations-provides a rare opportunity to model diversity dynamics in an insular community. Here, we reconstruct the diversity trajectory in noctilionoid bats of the Greater Antilles by applying a dynamic model of colonization, extinction and speciation to phylogenetic and palaeontological data including all known extinct and extant species...
January 9, 2017: Nature ecology & evolution
https://www.readbyqxmd.com/read/28812172/delayed-post-mastectomy-breast-reconstructions-with-allogeneic-acellular-dermal-matrix-prepared-by-a-new-decellularizationmethod
#10
Martin Bohac, Ivan Varga, Stefan Polak, Jana Dragunova, Jozef Fedeles, Jan Koller
Acellular dermal matrix (ADM) is a tissue graft of allogeneic origin from post-mortem tissue donors prepared by an innovative decellularization process. The newly developed non-toxic and low cost decellularization process of cadaver origin dermis included ADM in breast reconstruction procedures proved to help coverage of the lower-pole of breast expanders or implants. As the results have shown, it did help to eliminate autologous dermis donor site morbidity along with shortening the operation time by avoiding elevation of additional muscle or fascia during the operation...
August 16, 2017: Cell and Tissue Banking
https://www.readbyqxmd.com/read/28812041/anthropometric-and-skeletal-parameters-predict-2-strand-semitendinosus-tendon-size-in-double-bundle-anterior-cruciate-ligament-reconstruction
#11
Daisuke Chiba, Eiichi Tsuda, Shizuka Sasaki, Xizhe Liu, Yasuyuki Ishibashi
BACKGROUND: Few studies have examined whether skeletal parameters predict hamstring graft size during anterior cruciate ligament reconstruction (ACLR). PURPOSE/HYPOTHESIS: The purpose of this study was to examine whether preoperative anthropometric and radiographic skeletal parameters could predict hamstring graft size during ACLR. We hypothesized that both anthropometric and skeletal parameters can be used to predict graft size in our double-bundle procedure and that the use of skeletal parameters will improve the accuracy of graft size prediction...
August 2017: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/28812037/a-retrospective-analysis-of-concurrent-pathology-in-acl-reconstructed-knees-of-elite-alpine-ski-racers
#12
Matthew J Jordan, Patricia Doyle-Baker, Mark Heard, Per Aagaard, Walter Herzog
BACKGROUND: Anterior cruciate ligament (ACL) tear is the most frequent injury in alpine ski racing, and there is a high prevalence of ACL reinjury. Limited data exist on the concurrent pathology with primary ACL tears in elite alpine ski racers and the magnitude of injury progression after primary ACL reconstruction (ACLR). PURPOSE: To evaluate (1) the involvement of intra-articular and multiligament pathologies at the time of primary ACLR, (2) the subsequent progression in meniscal/chondral injuries, and (3) the occurrence of ACL reinjury in elite alpine ski racers...
July 2017: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/28811991/systematic-review-of-the-outcomes-of-surgical-treatment-of-prostate-metastases-to-the-spine
#13
REVIEW
Michelle J Clarke, Camilo A Molina, Daryl R Fourney, Charles G Fisher, Ziya L Gokaslan, Meic H Schmidt, Laurence D Rhines, Michael G Fehlings, Ilya Laufer, Shreyaskumar R Patel, Y Raja Rampersaud, Jeremy Reynolds, Dean Chou, Chetan Bettegowda, Ehud Mendel, Michael H Weber, Daniel M Sciubba
STUDY DESIGN: Systematic review. OBJECTIVE: Surgical decompression and reconstruction of symptomatic spinal metastases has improved the quality of life in cancer patients. However, most data has been collected on cohorts of patients with mixed tumor histopathology. We systematically reviewed the literature for prognostic factors specific to the surgical treatment of prostate metastases to the spine. METHODS: A systemic review of the literature was conducted to answer the following questions: Question 1...
August 2017: Global Spine Journal
https://www.readbyqxmd.com/read/28811720/endoscopic-occlusion-with-silicone-spigots-for-the-closure-of-refractory-esophago-bronchiole-fistula-after-esophagectomy
#14
Masaya Uesato, Tsuguaki Kono, Yasunori Akutsu, Kentarou Murakami, Akiko Kagaya, Yorihiko Muto, Akira Nakano, Mizuho Aikawa, Tomohide Tamachi, Hiroyuki Amagai, Takahiro Arasawa, Yasuhide Muto, Hisahiro Matsubara
A 65-year-old man with cT1bN0M0 stage I middle thoracic esophageal cancer underwent subtotal esophagectomy and gastric tube reconstruction through the posterior mediastinal route after preoperative carbon-ion radiotherapy and chemotherapy in a clinical trial. Anastomotic leakage occurred, but it spontaneously improved. At six months after the operation, he was rehospitalized with a cough and dysphagia. An esophago-bronchiole fistula and stenosis of the gastric tube were observed. He first underwent stent placement in the gastric tube...
July 28, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/28811644/the-link-between-enso-like-forcing-and-hydroclimate-variability-of-coastal-east-asia-during-the-last-millennium
#15
Jungjae Park, Jiwoo Han, Qiuhong Jin, Junbeom Bahk, Sangheon Yi
Inconsistent reconstructions of East Asian hydroclimate for the last millennium significantly limit our understanding of the mechanisms behind climate variability during the medieval climate anomaly (MCA) and little ice age (LIA) in the region. In this study, we present new high-resolution multiproxy records (diatom, δ(13)C, C/N, TS) from the Mulyoungari swamp, Jeju Island, South Korea. Our results indicate that El Niño southern oscillation-like variations caused the dry MCA/wet LIA pattern in the study area...
August 15, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28811520/chronic-post-stroke-aphasia-severity-is-determined-by-fragmentation-of-residual-white-matter-networks
#16
Barbara K Marebwa, Julius Fridriksson, Grigori Yourganov, Lynda Feenaughty, Chris Rorden, Leonardo Bonilha
Many stroke survivors with aphasia in the acute period experience spontaneous recovery within the first six months after the stroke. However, approximately 30-40% sustain permanent aphasia and the factors determining incomplete recovery are unclear. Suboptimal recovery may be influenced by disruption of areas seemingly spared by the stroke due to loss of white matter connectivity and network integrity. We reconstructed individual anatomical whole-brain connectomes from 90 left hemisphere stroke survivors using diffusion MR images...
August 15, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28811519/high-resolution-mapping-based-on-an-unmanned-aerial-vehicle-uav-to-capture-paleoseismic-offsets-along-the-altyn-tagh-fault-china
#17
Mingxing Gao, Xiwei Xu, Yann Klinger, Jerome van der Woerd, Paul Tapponnier
The recent dramatic increase in millimeter- to centimeter- resolution topographic datasets obtained via multi-view photogrammetry raises the possibility of mapping detailed offset geomorphology and constraining the spatial characteristics of active faults. Here, for the first time, we applied this new method to acquire high-resolution imagery and generate topographic data along the Altyn Tagh fault, which is located in a remote high elevation area and shows preserved ancient earthquake surface ruptures. A digital elevation model (DEM) with a resolution of 0...
August 15, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28811473/plant-made-polio-type-3-stabilized-vlps-a-candidate-synthetic-polio-vaccine
#18
Johanna Marsian, Helen Fox, Mohammad W Bahar, Abhay Kotecha, Elizabeth E Fry, David I Stuart, Andrew J Macadam, David J Rowlands, George P Lomonossoff
Poliovirus (PV) is the causative agent of poliomyelitis, a crippling human disease known since antiquity. PV occurs in two distinct antigenic forms, D and C, of which only the D form elicits a robust neutralizing response. Developing a synthetically produced stabilized virus-like particle (sVLP)-based vaccine with D antigenicity, without the drawbacks of current vaccines, will be a major step towards the final eradication of poliovirus. Such a sVLP would retain the native antigenic conformation and the repetitive structure of the original virus particle, but lack infectious genomic material...
August 15, 2017: Nature Communications
https://www.readbyqxmd.com/read/28811468/inferring-structural-connectivity-using-ising-couplings-in-models-of-neuronal-networks
#19
Balasundaram Kadirvelu, Yoshikatsu Hayashi, Slawomir J Nasuto
Functional connectivity metrics have been widely used to infer the underlying structural connectivity in neuronal networks. Maximum entropy based Ising models have been suggested to discount the effect of indirect interactions and give good results in inferring the true anatomical connections. However, no benchmarking is currently available to assess the performance of Ising couplings against other functional connectivity metrics in the microscopic scale of neuronal networks through a wide set of network conditions and network structures...
August 15, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28811371/angular-reconstitution-based-3d-reconstructions-of-nanomolecular-structures-from-superresolution-light-microscopy-images
#20
Desirée Salas, Antoine Le Gall, Jean-Bernard Fiche, Alessandro Valeri, Yonggang Ke, Patrick Bron, Gaetan Bellot, Marcelo Nollmann
Superresolution light microscopy allows the imaging of labeled supramolecular assemblies at a resolution surpassing the classical diffraction limit. A serious limitation of the superresolution approach is sample heterogeneity and the stochastic character of the labeling procedure. To increase the reproducibility and the resolution of the superresolution results, we apply multivariate statistical analysis methods and 3D reconstruction approaches originally developed for cryogenic electron microscopy of single particles...
August 15, 2017: Proceedings of the National Academy of Sciences of the United States of America
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