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https://www.readbyqxmd.com/read/28749354/real-time-cloth-rendering-with-fiber-level-detail
#1
Kui Wu, Cem Yuksel
Modeling cloth with fiber-level geometry can produce highly realistic details. However, rendering fiber-level cloth models not only has a high memory cost but it also has a high computation cost even for offline rendering applications. In this paper we present a real-time fiber-level cloth rendering method for current GPUs. Our method procedurally generates fiber-level geometric details on-the-fly using yarn-level control points for minimizing the data transfer to the GPU. We also reduce the rasterization operations by collectively representing the fibers near the center of each ply that form the yarn structure...
July 26, 2017: IEEE Transactions on Visualization and Computer Graphics
https://www.readbyqxmd.com/read/28749332/human-myiasis-caused-by-the-reindeer-warble-fly-hypoderma-tarandi-case-series-from-norway-2011-to-2016
#2
Jörgen Landehag, Andreas Skogen, Kjetil Åsbakk, Boris Kan
Hypoderma tarandi causes myiasis in reindeer and caribou (Rangifer tarandus spp.) in most northern hemisphere regions where these animals live. We report a series of 39 human myiasis cases caused by H. tarandi in Norway from 2011 to 2016. Thirty-two were residents of Finnmark, the northernmost county of Norway, one a visitor to Finnmark, and six lived in other counties of Norway where reindeer live. Clinical manifestations involved migratory dermal swellings of the face and head, enlargement of regional lymph nodes, and periorbital oedema, with or without eosinophilia...
July 20, 2017: Euro Surveillance: Bulletin Européen sur les Maladies Transmissibles, European Communicable Disease Bulletin
https://www.readbyqxmd.com/read/28747622/coupled-symmetric-and-asymmetric-circuits-underlying-spatial-orientation-in-fruit-flies
#3
Ta-Shun Su, Wan-Ju Lee, Yu-Chi Huang, Cheng-Te Wang, Chung-Chuan Lo
Maintaining spatial orientation when carrying out goal-directed movements requires an animal to perform angular path integration. Such functionality has been recently demonstrated in the ellipsoid body (EB) of fruit flies, though the precise circuitry and underlying mechanisms remain unclear. We analyze recently published cellular-level connectomic data and identify the unique characteristics of the EB circuitry, which features coupled symmetric and asymmetric rings. By constructing a spiking neural circuit model based on the connectome, we reveal that the symmetric ring initiates a feedback circuit that sustains persistent neural activity to encode information regarding spatial orientation, while the asymmetric rings are capable of integrating the angular path when the body rotates in the dark...
July 26, 2017: Nature Communications
https://www.readbyqxmd.com/read/28746859/release-of-applied-mechanical-loading-stimulates-intercellular-calcium-waves-in-drosophila-wing%C3%A2-discs
#4
Cody E Narciso, Nicholas M Contento, Thomas J Storey, David J Hoelzle, Jeremiah J Zartman
Mechanical forces are critical but poorly understood inputs for organogenesis and wound healing. Calcium ions (Ca(2+)) are critical second messengers in cells for integrating environmental and mechanical cues, but the regulation of Ca(2+) signaling is poorly understood in developing epithelial tissues. Here we report a chip-based regulated environment for microorgans that enables systematic investigations of the crosstalk between an organ's mechanical stress environment and biochemical signaling under genetic and chemical perturbations...
July 25, 2017: Biophysical Journal
https://www.readbyqxmd.com/read/28746842/the-droso4schools-project-long-term-scientist-teacher-collaborations-to-promote-science-communication-and-education-in-schools
#5
REVIEW
Sanjai Patel, Sophie DeMaine, Joshua Heafield, Lynne Bianchi, Andreas Prokop
Science communication is becoming an increasingly important part of a scientist's remit, and engaging with primary and secondary schools is one frequently chosen strategy. Here we argue that engaging with schools will be more effective when engaging with teachers through structured participation and/or collaboration, in order to respond to the realities of school life in designing the strategies used by science communicators. For example, the Manchester Fly Facility advocates the fruit fly Drosophila as an important research strategy for the discovery processes in the biomedical sciences...
July 23, 2017: Seminars in Cell & Developmental Biology
https://www.readbyqxmd.com/read/28746346/drosophila-increase-exploration-after-visually-detecting-predators
#6
Miguel de la Flor, Lijian Chen, Claire Manson-Bishop, Tzu-Chun Chu, Kathya Zamora, Danielle Robbins, Gemunu Gunaratne, Gregg Roman
Novel stimuli elicit behaviors that are collectively known as specific exploration. These behaviors allow the animal to become more familiar with the novel objects within its environment. Specific exploration is frequently suppressed by defensive reactions to predator cues. Herein, we examine if this suppression occurs in Drosophila melanogaster by measuring the response of these flies to wild harvested predators. The flies used in our experiments have been cultured and had not lived under predator threat for multiple decades...
2017: PloS One
https://www.readbyqxmd.com/read/28745645/a-simple-neuronal-mechanical-injury-methodology-to-study-drosophila-motor-neuron-degeneration
#7
Erika B Danella, Lani C Keller
The degeneration of neurons occurs during normal development and in response to injury, stress, and disease. The cellular hallmarks of neuronal degeneration are remarkably similar in humans and invertebrates as are the molecular mechanisms that drive these processes. The fruit fly, Drosophila melanogaster, provides a powerful yet simple genetic model organism to study the cellular complexities of neurodegenerative diseases. In fact, approximately 70% of disease-associated human genes have a Drosophila homolog and a plethora of tools and assays have been described using flies to study human neurodegenerative diseases...
July 19, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28744950/neural-signature-of-inattentional-deafness
#8
Gautier Durantin, Frederic Dehais, Nicolas Gonthier, Cengiz Terzibas, Daniel E Callan
Inattentional deafness is the failure to hear otherwise audible sounds (usually alarms) that may occur under high workload conditions. One potential cause for its occurrence could be an attentional bottleneck that occurs when task demands are high, resulting in lack of resources for processing of additional tasks. In this fMRI experiment, we explore the brain regions active during the occurrence of inattentional deafness using a difficult perceptual-motor task in which the participants fly through a simulated Red Bull air race course and at the same time push a button on the joystick to the presence of audio alarms...
July 26, 2017: Human Brain Mapping
https://www.readbyqxmd.com/read/28743920/sexual-pair-formation-in-a-cicada-mediated-by-acoustic-behaviour-of-females-and-positive-phonotaxis-of-males
#9
Zehai Hou, Changqing Luo, J Dale Roberts, Cong Wei
The functions of female song found in a few cicadas have rarely been studied. In the cicada Subpsaltria yangi we investigated the acoustic behaviour and signal structure of songs produced by females, the phonotaxis of males, and mate choice, as well as the selective pressure imposed on this species by predators. Pair-formation in S. yangi occurs when males signal, females respond, then males move to signaling females, which is opposite to that in most other cicadas where females move to calling males. Females only mate once and are sexually unreceptive after copulation...
July 25, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28743754/sik3-hdac4-signaling-regulates-drosophila-circadian-male-sex-drive-rhythm-via-modulating-the-dn1-clock-neurons
#10
Shinsuke Fujii, Patrick Emery, Hubert Amrein
The physiology and behavior of many organisms are subject to daily cycles. In Drosophila melanogaster the daily locomotion patterns of single flies are characterized by bursts of activity at dawn and dusk. Two distinct clusters of clock neurons-morning oscillators (M cells) and evening oscillators (E cells)-are largely responsible for these activity bursts. In contrast, male-female pairs of flies follow a distinct pattern, most notably characterized by an activity trough at dusk followed by a high level of male courtship during the night...
July 25, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28743450/field-evaluation-of-a-semi-automatic-funnel-trap-targeted-the-medically-important-non-biting-flies
#11
Tunwadee Klong-Klaew, Narin Sontigun, Sangob Sanit, Chutharat Samerjai, Kom Sukontason, Hiromu Kurahashi, Philip G Koehler, Roberto M Pereira, Kwankamol Limsopatham, Suttida Suwannayod, Sa-Nguansak Thanapornpoonpong, Theeraphap Chareonviriyaphap, Kabkaew L Sukontason
Bait-trapping is a useful approach for monitoring fly population dynamics, and it is an effective tool for physical control of pest species. The aim of this study was to test a newly developed semi-automatic funnel fly trap with some modifications of the former prototype fly trap to study medically important fly population density. The efficacy of the semi-automatic funnel trap was assessed by field sampling during July 2013-June 2014 using 1-day tainted beef offal as bait. The modified semi-automatic funnel traps were able to capture a total of 151,141 adult flies, belonging to the families: Calliphoridae (n=147,248; 97...
July 22, 2017: Acta Tropica
https://www.readbyqxmd.com/read/28742526/the-black-soldier-fly-hermetia-illucens-a-promising-source-for-sustainable-production-of-proteins-lipids-and-bioactive-substances
#12
Ariane Müller, Diana Wolf, Herwig O Gutzeit
The growing demand worldwide for proteins and lipids cannot be met by the intensive use of agricultural land currently available. Insect mass cultures as a source for proteins and lipids have been in focus for various reasons. An insect with many positive properties is the black soldier fly, Hermetia illucens, whose larvae could be used for the sustainable production of proteins and lipids. Furthermore, the larvae produce bioactive substances which could potentially be used for human and animal welfare.
July 25, 2017: Zeitschrift Für Naturforschung. C, A Journal of Biosciences
https://www.readbyqxmd.com/read/28742275/the-proteome-and-transcriptome-of-the-infectious-metacyclic-form-of-trypanosoma-brucei-define-quiescent-cells-primed-for-mammalian-invasion
#13
Romain Christiano, Nikolay G Kolev, Huafang Shi, Elisabetta Ullu, Tobias C Walther, Christian Tschudi
The infectious metacyclic forms of Trypanosoma brucei result from a complex development in the tsetse fly vector. When they infect mammals, they cause African sleeping sickness in humans. Due to scarcity of biological material and difficulties of the tsetse fly as an experimental system, very limited information is available concerning the gene expression profile of metacyclic forms. We used an in vitro system based on expressing the RNA binding protein 6 to obtain infectious metacyclics and determined their protein and mRNA repertoires by mass-spectrometry (MS) based proteomics and mRNA sequencing (RNA-Seq) in comparison to non-infectious procyclic trypanosomes...
July 25, 2017: Molecular Microbiology
https://www.readbyqxmd.com/read/28742133/a-putative-atp-gtp-binding-protein-affects-leishmania-mexicana-growth-in-insect-vectors-and-vertebrate-hosts
#14
Aygul Ishemgulova, Natalya Kraeva, Jana Hlaváčová, Sara L Zimmer, Anzhelika Butenko, Lucie Podešvová, Tereza Leštinová, Julius Lukeš, Alexei Kostygov, Jan Votýpka, Petr Volf, Vyacheslav Yurchenko
BACKGROUND: Leishmania virulence factors responsible for the complicated epidemiology of the various leishmaniases remain mainly unidentified. This study is a characterization of a gene previously identified as upregulated in two of three overlapping datasets containing putative factors important for Leishmania's ability to establish mammalian intracellular infection and to colonize the gut of an insect vector. METHODOLOGY/PRINCIPAL FINDINGS: The investigated gene encodes ATP/GTP binding motif-containing protein related to Leishmania development 1 (ALD1), a cytosolic protein that contains a cryptic ATP/GTP binding P-loop...
July 24, 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28742021/resolving-the-prevalence-of-somatic-transposition-in-drosophila
#15
Christoph Daniel Treiber, Scott Waddell
Somatic transposition in mammals and insects could increase cellular diversity and neural mobilization has been implicated in age-dependent decline. To understand the impact of transposition in somatic cells it is essential to reliably measure the frequency and map locations of new insertions. Here we identified thousands of putative somatic transposon insertions in neurons from individual Drosophila melanogaster using whole-genome sequencing. However, the number of de novo insertions did not correlate with transposon expression or fly age...
July 25, 2017: ELife
https://www.readbyqxmd.com/read/28741205/one-more-step-toward-a-push-pull-strategy-combining-both-a-trap-crop-and-plant-volatile-organic-compounds-against-the-cabbage-root-fly-delia-radicum
#16
Fabrice Lamy, Sébastien Dugravot, Anne Marie Cortesero, Valérie Chaminade, Vincent Faloya, Denis Poinsot
The "push-pull" strategy aims at manipulating insect pest behavior using a combination of attractive and repulsive stimuli using either plants derived volatile organic compounds or insect host plant preferences. In a field experiment using broccoli as a crop, we combined in a "push-pull" context the oviposition deterrent effect of dimethyl disulfide and the attractive effect of a Chinese cabbage strip enhanced with Z-3-hexenyl-acetate. The push component dimethyl disulfide reduced Delia radicum L. (Diptera: Anthomyiidae) oviposition on broccoli by nearly 30%, and applying Z-3-hexenyl-acetate in the pull component of Chinese cabbage increased it by 40%...
July 24, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28740153/continuous-and-scalable-polymer-capsule-processing-for-inertial-fusion-energy-target-shell-fabrication-using-droplet-microfluidics
#17
Jin Li, Jack Lindley-Start, Adrian Porch, David Barrow
High specification, polymer capsules, to produce inertial fusion energy targets, were continuously fabricated using surfactant-free, inertial centralisation, and ultrafast polymerisation, in a scalable flow reactor. Laser-driven, inertial confinement fusion depends upon the interaction of high-energy lasers and hydrogen isotopes, contained within small, spherical and concentric target shells, causing a nuclear fusion reaction at ~150 M°C. Potentially, targets will be consumed at ~1 M per day per reactor, demanding a 5000x unit cost reduction to ~$0...
July 24, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28738445/population-characteristics-of-macrocheles-glaber-acari-macrochelidae-and-stratiolaelaps-scimitus-acari-laelapidae-reared-on-a-mushroom-fly-coboldia-fuscipes-diptera-scatopsidae
#18
Mei-Fang Wen, Hsin Chi, Ying-Xiao Lian, Yu-Hao Zheng, Qing-Hai Fan, Min-Sheng You
Subterranean predatory mites are important biological control agents of pests in soil. In order to understand the population characteristics of two predatory mites, Macrocheles glaber Müller and Stratiolaelaps scimitus Womersley, we studied their development, survival and fecundity data under laboratory conditions using Coboldia fuscipes Meigen as food source and analyzed with the age-stage, two-sex life table. Macrocheles glaber had a significantly shorter developmental time, oviposition period, longevity and lower fecundity than those of S...
July 24, 2017: Insect Science
https://www.readbyqxmd.com/read/28738144/simulating-electron-dynamics-in-polarizable-environments
#19
Xiaojing Wu, Jean-Marie Teuler, Fabien Cailliez, Carine Clavaguera, Dennis R Salahub, Aurélien de la Lande
We propose a methodology for simulating attosecond electron dynamics in large molecular systems. Our approach is based on the combination of Real-Time Time-Dependent-Density-Functional-Theory (RT-TDDFT) and polarizable Molecular Mechanics (MMpol) with the point-charge-dipole model of electrostatic induction. We implemented this methodology in the software deMon2k that relies heavily on auxiliary fitted densities. In the context of RT-TDDFT/MMpol simulations, fitted densities allow the cost of the calculations to be reduced drastically on three fronts i) the Kohn-Sham potential, ii) the electric field created by the (fluctuating) electron cloud which is needed in the QM/MM interaction, and iii) the analysis of the fluctuating electron density on-the-fly...
July 24, 2017: Journal of Chemical Theory and Computation
https://www.readbyqxmd.com/read/28736164/idiothetic-path-integration-in-the-fruit-fly-drosophila-melanogaster
#20
Irene S Kim, Michael H Dickinson
After discovering a small drop of food, hungry flies exhibit a peculiar behavior in which they repeatedly stray from, but then return to, the newly discovered resource. To study this behavior in more detail, we tracked hungry Drosophila as they explored a large arena, focusing on the question of how flies remain near the food. To determine whether flies use external stimuli, we individually eliminated visual, olfactory, and pheromonal cues. In all cases, flies still exhibited a centralized search behavior, suggesting that none of these cues are absolutely required for navigation back to the food...
July 11, 2017: Current Biology: CB
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