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https://www.readbyqxmd.com/read/28813098/modeling-and-mapping-basal-area-of-pinus-taeda-l-plantation-using-airborne-lidar-data
#1
Carlos A Silva, Carine Klauberg, Andrew T Hudak, Lee A Vierling, Scott J Fennema, Ana Paula D Corte
Basal area (BA) is a good predictor of timber stand volume and forest growth. This study developed predictive models using field and airborne LiDAR (Light Detection and Ranging) data for estimation of basal area in Pinus taeda plantation in south Brazil. In the field, BA was collected from conventional forest inventory plots. Multiple linear regression models for predicting BA from LiDAR-derived metrics were developed and evaluated for predictive power and parsimony. The best model to predict BA from a family of six models was selected based on corrected Akaike Information Criterion (AICc) and assessed by the adjusted coefficient of determination (adj...
August 14, 2017: Anais da Academia Brasileira de Ciências
https://www.readbyqxmd.com/read/28812732/genome-of-the-pitcher-plant-cephalotus-reveals-genetic-changes-associated-with-carnivory
#2
Kenji Fukushima, Xiaodong Fang, David Alvarez-Ponce, Huimin Cai, Lorenzo Carretero-Paulet, Cui Chen, Tien-Hao Chang, Kimberly M Farr, Tomomichi Fujita, Yuji Hiwatashi, Yoshikazu Hoshi, Takamasa Imai, Masahiro Kasahara, Pablo Librado, Likai Mao, Hitoshi Mori, Tomoaki Nishiyama, Masafumi Nozawa, Gergő Pálfalvi, Stephen T Pollard, Julio Rozas, Alejandro Sánchez-Gracia, David Sankoff, Tomoko F Shibata, Shuji Shigenobu, Naomi Sumikawa, Taketoshi Uzawa, Meiying Xie, Chunfang Zheng, David D Pollock, Victor A Albert, Shuaicheng Li, Mitsuyasu Hasebe
Carnivorous plants exploit animals as a nutritional source and have inspired long-standing questions about the origin and evolution of carnivory-related traits. To investigate the molecular bases of carnivory, we sequenced the genome of the heterophyllous pitcher plant Cephalotus follicularis, in which we succeeded in regulating the developmental switch between carnivorous and non-carnivorous leaves. Transcriptome comparison of the two leaf types and gene repertoire analysis identified genetic changes associated with prey attraction, capture, digestion and nutrient absorption...
February 6, 2017: Nature ecology & evolution
https://www.readbyqxmd.com/read/28812720/antagonistic-pleiotropy-and-mutation-accumulation-influence-human-senescence-and-disease
#3
Juan Antonio Rodríguez, Urko M Marigorta, David A Hughes, Nino Spataro, Elena Bosch, Arcadi Navarro
Senescence has long been a public health challenge as well as a fascinating evolutionary problem. There is neither a universally accepted theory for its ultimate causes, nor a consensus about what may be its impact on human health. Here we test the predictions of two evolutionary explanations of senescence-mutation accumulation and antagonistic pleiotropy-which postulate that genetic variants with harmful effects in old ages can be tolerated, or even favoured, by natural selection at early ages. Using data from genome-wide association studies (GWAS), we study the effects of genetic variants associated with diseases appearing at different periods in life, when they are expected to have different impacts on fitness...
January 30, 2017: Nature ecology & evolution
https://www.readbyqxmd.com/read/28812604/stand-age-and-species-richness-dampen-interannual-variation-of-ecosystem-level-photosynthetic-capacity
#4
Talie Musavi, Mirco Migliavacca, Markus Reichstein, Jens Kattge, Christian Wirth, T Andrew Black, Ivan Janssens, Alexander Knohl, Denis Loustau, Olivier Roupsard, Andrej Varlagin, Serge Rambal, Alessandro Cescatti, Damiano Gianelle, Hiroaki Kondo, Rijan Tamrakar, Miguel D Mahecha
The total uptake of carbon dioxide by ecosystems via photosynthesis (gross primary productivity, GPP) is the largest flux in the global carbon cycle. A key ecosystem functional property determining GPP is the photosynthetic capacity at light saturation (GPPsat), and its interannual variability (IAV) is propagated to the net land-atmosphere exchange of CO2. Given the importance of understanding the IAV in CO2 fluxes for improving the predictability of the global carbon cycle, we have tested a range of alternative hypotheses to identify potential drivers of the magnitude of IAV in GPPsat in forest ecosystems...
January 23, 2017: Nature ecology & evolution
https://www.readbyqxmd.com/read/28812408/calcium-pyrophosphate-deposition-disease-a-frequent-finding-in-patients-with-long-standing-erosive-gout
#5
B Ankli, D Kyburz, A Hirschmann, T Hügle, T Manigold, C T Berger, T Daikeler
OBJECTIVE: To characterize patients with both monosodium urate (MSU) and calcium pyrophosphate (CPP) crystals in their synovial fluid (SF). METHOD: Forty-nine gout patients with acute arthritis were included. Those patients with MSU crystals only in their SF were compared to those patients with both MSU and CPP crystals in their SF. RESULTS: A total of 36 out of 49 patients (73.5%) had only MSU crystals, whereas 13 out of 49 (26.5%) had both MSU and CPP crystals in their SF...
August 16, 2017: Scandinavian Journal of Rheumatology
https://www.readbyqxmd.com/read/28812190/diagnostic-value-of-the-stand-alone-synthetic-image-in-digital-breast-tomosynthesis-examinations
#6
Julia Garayoa, Margarita Chevalier, Maria Castillo, Ignacio Mahillo-Fernández, Najim Amallal El Ouahabi, Carmen Estrada, Alejandro Tejerina, Olivia Benitez, Julio Valverde
OBJECTIVE: To demonstrate the non-inferiority of synthetic image (SI) mammography versus full-field digital mammography (FFDM) in breast tomosynthesis (DBT) examinations. METHODS: An observational, retrospective, single-centre, multireader blinded study was performed, using 2384 images to directly compare SI and FFDM based on Breast Imaging Reporting and Data System (BIRADS) categorisation and visibility of radiological findings. Readers had no access to digital breast tomosynthesis slices...
August 15, 2017: European Radiology
https://www.readbyqxmd.com/read/28812185/reliability-of-standing-weight-bearing-0-25t-mr-imaging-findings-and-positional-changes-in-the-lumbar-spine
#7
Bjarke B Hansen, Philip Hansen, Anders F Christensen, Charlotte Trampedach, Zoreh Rasti, Henning Bliddal, Mikael Boesen
OBJECTIVE: To test the reliability and absolute agreement of common degenerative findings in standing positional magnetic resonance imaging (pMRI). METHODS AND MATERIALS: Low back pain patients with and without sciatica were consecutively enrolled to undergo a supine and standing pMRI. Three readers independently evaluated the standing pMRI for herniation, spinal stenosis, spondylolisthesis, HIZ lesions and facet joint effusion. The evaluation included a semi-quantitative grading of spinal stenosis, foraminal stenosis and spinal nerve root compression...
August 15, 2017: Skeletal Radiology
https://www.readbyqxmd.com/read/28812083/visible-light-enhanced-power-generation-in-microbial-fuel-cells-coupling-with-3d-nitrogen-doped-graphene
#8
Dan Guo, Rong-Bin Song, Hao-Hua Shao, Jian-Rong Zhang, Jun-Jie Zhu
A new visible-light-assisted microbial fuel cell composed of a three-dimensional nitrogen-doped graphene self-standing sponge anode and a photoresponsive cathode has been developed for achieving multiple energy conversion and a higher power output.
August 16, 2017: Chemical Communications: Chem Comm
https://www.readbyqxmd.com/read/28811982/a-matched-cohort-analysis-comparing-stand-alone-cages-and-anterior-cervical-plates-used-for-anterior-cervical-discectomy-and-fusion
#9
Samuel C Overley, Robert K Merrill, Dante M Leven, Joshua J Meaike, Abhishek Kumar, Sheeraz A Qureshi
STUDY DESIGN: Retrospective cohort study. OBJECTIVE: To compare perioperative characteristics of stand-alone cages and anterior cervical plates used for anterior cervical discectomy and fusion (ACDF). METHODS: We reviewed 40 adult patients who received a stand-alone cage for elective ACDF and matched them with 40 patients who received an anterior cervical plate. We statistically compared operative time, length of stay, proportion of ambulatory cases, overall complications necessitating a trip to the ED, readmission, or reoperation related to index procedure...
August 2017: Global Spine Journal
https://www.readbyqxmd.com/read/28811943/reviewing-the-emergence-of-lactococcus-garvieae-a-case-of-catheter-associated-urinary-tract-infection-caused-by-lactococcus-garvieae-and-escherichia-coli-coinfection
#10
Tatvam T Choksi, Farhan Dadani
Lactococcus garvieae is considered a low virulence organism which is rarely associated with human infections. Most of the reported cases have been associated with bacteremia with or without endocarditis. We report a rare case of catheter associated urinary tract infection (CAUTI) caused by Lactococcus garvieae and Escherichia coli coinfection without any bacteremia in a patient with indwelling urinary catheter placed for benign prostatic hyperplasia (BPH). The patient also had a history of gastroesophageal reflux disease (GERD) with long standing famotidine treatment...
2017: Case Reports in Infectious Diseases
https://www.readbyqxmd.com/read/28811875/ecosystem-size-predicts-eco-morphological-variability-in-a-postglacial-diversification
#11
Hans Recknagel, Oliver E Hooker, Colin E Adams, Kathryn R Elmer
Identifying the processes by which new phenotypes and species emerge has been a long-standing effort in evolutionary biology. Young adaptive radiations provide a model to study patterns of morphological and ecological diversification in environmental context. Here, we use the recent radiation (ca. 12k years old) of the freshwater fish Arctic charr (Salvelinus alpinus) to identify abiotic and biotic environmental factors associated with adaptive morphological variation. Arctic charr are exceptionally diverse, and in postglacial lakes there is strong evidence of repeated parallel evolution of similar morphologies associated with foraging...
August 2017: Ecology and Evolution
https://www.readbyqxmd.com/read/28811387/selection-constrains-high-rates-of-tandem-repetitive-dna-mutation-in-daphnia-pulex
#12
Jullien M Flynn, Ian Caldas, Melania E Cristescu, Andrew G Clark
A long-standing evolutionary puzzle is that all eukaryotic genomes contain large amounts of tandemly-repeated DNA whose sequence motifs and abundance vary greatly among even closely related species. To elucidate the evolutionary forces governing tandem repeat dynamics, quantification of the rates and patterns of mutations in repeat copy number and tests of its selective neutrality are necessary. Here we used whole-genome sequences of 28 mutation accumulation (MA) lines of Daphnia pulex in addition to six isolates from a non-MA population originating from the same progenitor to both estimate mutation rates of abundances of repeat sequences and evaluate the selective regime acting upon them...
August 15, 2017: Genetics
https://www.readbyqxmd.com/read/28811029/use-of-diffusive-gradient-in-thin-films-for-in-situ-measurements-a-review-on-the-progress-in-chemical-fractionation-speciation-and-bioavailability-of-metals-in-waters
#13
REVIEW
Amauri Antonio Menegário, Lauren N Marques Yabuki, Karen S Luko, Paul N Williams, Daniel M Blackburn
Chemical fractionation, speciation analysis and bioavailability of metals and metalloids in waters have received increased attention in recent years. However, this interest is not matched by progress in improving species integrity during standard 'grab' sample collection, processing and storage. Time-averaged, low disturbance sampling, in situ, of trace element species, in particular, is a more reliable approach for environmental chemical surveillance and methods based on the diffusive gradients in thin films (DGT) technique stand out as one of the most widely used of the passive sampler classes, and hence will be the primary focus of this review...
August 29, 2017: Analytica Chimica Acta
https://www.readbyqxmd.com/read/28810915/quality-of-life-and-correlation-with-clinical-and-radiographic-variables-in-patients-with-ankylosing-spondylitis-a-retrospective-case-series-study
#14
Ji-Chen Huang, Bang-Ping Qian, Yong Qiu, Bin Wang, Yang Yu, Ze-Zhang Zhu, Jun Hu, Zhe Qu
BACKGROUND: Previously, many studies have evaluated quality of life (QoL) in patients with ankylosing spondylitis (AS), however, none of them specifically investigated the correlation between pain-related disability measured by Oswestry Disability Index (ODI) and QoL in AS patients. In addition, the correlation between global kyphosis (GK) in lateral plain radiographs and QoL in AS patients remains unclear up to now. Therefore, this study aimed to evaluate QoL and correlation with clinical and radiographic variables in AS patients, especially to figure out the relationship about the pain-specific disability measured by ODI, GK and QoL...
August 15, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/28810666/monitoring-and-discharging-children-being-treated-for-severe-acute-malnutrition-using-mid-upper-arm-circumference-secondary-data-analysis-from-rural-gambia
#15
Alice Burrell, Marko Kerac, Helen Nabwera
Background: Severe acute malnutrition (SAM) is a major public health problem. Mid-upper arm circumference (MUAC) is widely used to admit children to treatment programmes. However, insufficient data supporting MUAC discharge criterion limits its use as a stand-alone tool. Our aim was to evaluate MUAC for monitoring nutritional recovery and discharge. Methods: This was a secondary analysis of clinical data from children 6-59 months-old treated for SAM from January 2003 to December 2013 at the Nutritional Rehabilitation Unit in rural Gambia...
July 1, 2017: International Health
https://www.readbyqxmd.com/read/28810073/implications-of-pseudologia-fantastica-in-criminal-forensic-evaluations-a-review-and-case-report
#16
Richard L Frierson, Kaustubh G Joshi
Pseudologia fantastica, a psychological phenomenon that has been described in the literature for at least a century, is an understudied and poorly understood entity. Sometimes referred to as pathological lying, pseudologia fantastica involves disproportionate fabrication that may be present for many years or a lifetime. In a forensic context, it can significantly complicate the evaluation of capacity to stand trial and, in certain jurisdictions, criminal responsibility. We review the current literature regarding pseudologia fantastica and present a case to highlight the clinical and forensic challenges it may create...
August 15, 2017: Journal of Forensic Sciences
https://www.readbyqxmd.com/read/28809939/a-cross-sectional-study-comparing-lateral-and-diagonal-maximum-weight-shift-in-people-with-stroke-and-healthy-controls-and-the-correlation-with-balance-gait-and-fear-of-falling
#17
Margaretha M van Dijk, Sarah Meyer, Solveig Sandstad, Evelyne Wiskerke, Rhea Thuwis, Chesny Vandekerckhove, Charlotte Myny, Nitesh Ghosh, Hilde Beyens, Eddy Dejaeger, Geert Verheyden
Impaired balance is common post stroke and can be assessed by means of force-platforms measuring center of pressure (COP) displacements during static standing, or more dynamically during lateral maximum weight shift (MWS). However, activities of daily life also include diagonal MWS and since force platforms are nowadays commercially available, investigating lateral and diagonal MWS in a clinical setting might be feasible and clinically relevant. We investigated lateral and diagonal MWS while standing in patients with stroke (PwS) and healthy controls (HC), evaluated MWS towards the affected and the non-affected side for PwS and correlated MWS with measures of balance, gait and fear of falling...
2017: PloS One
https://www.readbyqxmd.com/read/28809763/persistent-placoid-maculopathy-complicated-by-cerebral-vasculitis
#18
Eva Lenassi, Maja Kojovic, Polona Jaki Mekjavić, Sasa Sega, Natasa Vidovič Valentinčič
Persistent placoid maculopathy (PPM) is a bilateral inflammatory chorioretinopathy characterized by long-standing plaque-like macular lesions. No systemic manifestations have been reported to date. We describe a case of PPM complicated by cerebral vasculitis, suggesting that neurological symptoms, including headache, should be enquired about in all PPM subjects.
September 2017: Journal of Neuro-ophthalmology: the Official Journal of the North American Neuro-Ophthalmology Society
https://www.readbyqxmd.com/read/28809719/hybrid-fuzzy-wavelet-neural-networks-architecture-based-on-polynomial-neural-networks-and-fuzzy-set-relation-inference-based-wavelet-neurons
#19
Wei Huang, Sung-Kwun Oh, Witold Pedrycz
This paper presents a hybrid fuzzy wavelet neural network (HFWNN) realized with the aid of polynomial neural networks (PNNs) and fuzzy inference-based wavelet neurons (FIWNs). Two types of FIWNs including fuzzy set inference-based wavelet neurons (FSIWNs) and fuzzy relation inference-based wavelet neurons (FRIWNs) are proposed. In particular, a FIWN without any fuzzy set component (viz., a premise part of fuzzy rule) becomes a wavelet neuron (WN). To alleviate the limitations of the conventional wavelet neural networks or fuzzy wavelet neural networks whose parameters are determined based on a purely random basis, the parameters of wavelet functions standing in FIWNs or WNs are initialized by using the C-Means clustering method...
August 11, 2017: IEEE Transactions on Neural Networks and Learning Systems
https://www.readbyqxmd.com/read/28809702/improved-alpha-testing-using-hashed-sampling
#20
Chris Wyman, Morgan McGuire
We further describe and analyze the idea of hashed alpha testing from Wyman and McGuire [1], which builds on stochastic alpha testing and simplifies stochastic transparency. Typically, alpha testing provides a simple mechanism to mask out complex silhouettes using simple proxy geometry with applied alpha textures. While widely used, alpha testing has a long-standing problem: geometry can disappear entirely as alpha mapped polygons recede with distance. As foveated rendering for virtual reality spreads, this problem worsens as peripheral minification and prefiltering introduce this problem on nearby objects...
August 14, 2017: IEEE Transactions on Visualization and Computer Graphics
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