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https://www.readbyqxmd.com/read/28934157/complete-systematic-error-model-of-ssr-for-sensor-registration-in-atc-surveillance-networks
#1
Ángel J Jarama, Jaime López-Araquistain, Gonzalo de Miguel, Juan A Besada
In this paper, a complete and rigorous mathematical model for secondary surveillance radar systematic errors (biases) is developed. The model takes into account the physical effects systematically affecting the measurement processes. The azimuth biases are calculated from the physical error of the antenna calibration and the errors of the angle determination dispositive. Distance bias is calculated from the delay of the signal produced by the refractivity index of the atmosphere, and from clock errors, while the altitude bias is calculated taking into account the atmosphere conditions (pressure and temperature)...
September 21, 2017: Sensors
https://www.readbyqxmd.com/read/28932886/immediate-responses-of-the-cockroach-blaptica-dubia-after-the-exposure-to-sulfur-mustard
#2
Tanja Popp, Robin Lüling, Ingrid Boekhoff, Thomas Seeger, Francisco Branoner, Thomas Gudermann, Horst Thiermann, Franz Worek, Dirk Steinritz
The chemical agent sulfur mustard (SM) causes erythema, skin blisters, ulcerations, and delayed wound healing. It is accepted that the underlying molecular toxicology is based on DNA alkylation. With an expected delay, DNA damage causes impairment of protein biosynthesis and disturbance of cell division. However, using the cockroach model Blaptica dubia, the presented results show that alkylating compounds provoke immediate behavior responses along with fast changes in the electrical field potential (EFP) of neurons, suggesting that lesions of DNA are probably not the only effect of alkylating compounds...
September 20, 2017: Archives of Toxicology
https://www.readbyqxmd.com/read/28931902/red-light-phenotype-in-a-marine-diatom-involves-a-specialized-oligomeric-red-shifted-antenna-and-altered-cell-morphology
#3
Miroslava Herbstová, David Bína, Radek Kaňa, František Vácha, Radek Litvín
Diatoms greatly contribute to carbon fixation and thus strongly influence the global biogeochemical balance. Capable of chromatic acclimation (CA) to unfavourable light conditions, diatoms often dominate benthic ecosystems in addition to their planktonic lifestyle. Although CA has been studied at the molecular level, our understanding of this phenomenon remains incomplete. Here we provide new data to better explain the acclimation-associated changes under red-enhanced ambient light (RL) in diatom Phaeodactylum tricornutum, known to express a red-shifted antenna complex (F710)...
September 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28931846/identification-of-genes-involved-in-chemoreception-in-plutella-xyllostella-by-antennal-transcriptome-analysis
#4
Shiyong Yang, Depan Cao, Guirong Wang, Yang Liu
Perception of environmental and habitat cues is of significance for insect survival and reproduction. Odor detection in insects is mediated by a number of proteins in antennae such as odorant receptors (ORs), ionotropic receptors (IRs), odorant binding proteins (OBPs), chemosensory proteins (CSPs), sensory neuron membrane proteins (SNMPs) and odorant degrading enzymes. In this study, we sequenced and assembled the adult male and female antennal transcriptomes of a destructive agricultural pest, the diamondback moth Plutella xyllostella...
September 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28929590/enhancing-photocurrent-generation-in-photosynthetic-reaction-center-based-photoelectrochemical-cells-with-biomimetic-dna-antenna
#5
Anne-Marie Carey, Haojie Zhang, Minghui Liu, Daiana Sharaf, Natalie Akram, Hao Yan, Su Lin, Neal Woodbury, Dong-Kyun Seo
3 to 4 times higher performance of biohybrid photoelectrochemical cells with photosynthetic reaction centers (RC) has been achieved by using a DNA-based biomimetic antenna. Synthetic dyes Cy3 and Cy5 were chosen and strategically placed in the anntena in such a way that they can collect additional light energy in the visible region of the solar spectrum and transfer it to RC through Förster resonance energy transfer (FRET). The antenna, a DNA templated multiple dye system, is attached to each Rhodobacter sphaeroides RC near the primary donor, P, to facilitate the energy transfer process...
September 19, 2017: ChemSusChem
https://www.readbyqxmd.com/read/28929373/security-belt-for-wireless-implantable-medical-devices
#6
Selman Kulaç
In this study, a new protective design compatible with existing non-secure systems was proposed, since it is focused on the secure communication of wireless IMD systems in all transmissions. This new protector is an external wearable device and appears to be a belt fitted around for the patients IMD implanted. However, in order to provide effective full duplex transmissions and physical layer security, some sophisticated transceiver antennas have been placed on the belt. In this approach, beam-focused multi-antennas in optimal positions on the belt are randomly switched when transmissions to the IMD are performed and multi-jammer switching with MRC combining or majority-rule based receiving techniques are applied when transmissions from the IMD are carried out...
September 19, 2017: Journal of Medical Systems
https://www.readbyqxmd.com/read/28927861/primary-cilia-formation-is-diminished-in-schizophrenia-and-bipolar-disorder-a-possible-marker-for-these-psychiatric-diseases
#7
Jesús Muñoz-Estrada, Alejandra Lora-Castellanos, Isaura Meza, Salvador Alarcón Elizalde, Gloria Benítez-King
Primary cilium (PC) is a microtubule-rich organelle that protrudes from the plasma membrane and acts as a cellular antenna sensing extracellular signals during brain development. DISC1 (Disrupted-in-Schizophrenia-1) is involved in PC formation and is considered a risk factor for neuropsychiatric disorders. We have previously described altered subcellular distribution of DISC1 and an aberrant microtubule organization in olfactory neuronal precursors (ONP) obtained from schizophrenia (SCZ) and bipolar disorder (BD) patients...
September 16, 2017: Schizophrenia Research
https://www.readbyqxmd.com/read/28926278/planar-optical-nano-antennas-resolve-cholesterol-dependent-nanoscale-heterogeneities-in-the-plasma-membrane-of-living-cells
#8
Raju Regmi, Pamina Martina Winkler, Valentin Flauraud, Kyra Borgman, Carlo Manzo, Juergen Brugger, Herve Rigneault, Jerome Wenger, Maria F Garcia-Parajo
Optical nano-antennas can efficiently confine light into nanoscopic hotspots enabling single-molecule detection sensitivity at biological relevant conditions. This innovative approach to breach the diffraction limit offers a versatile platform to investigate the dynamics of individual biomolecules in living cell membranes and their partitioning into cholesterol-dependent lipid nanodomains. Here, we present optical nano-antenna arrays with accessible surface hotspots to study the characteristic diffusion dynamics of phosphoethanolamine (PE) and sphingomyelin (SM) in the plasma membrane of living cells at the nanoscale...
September 19, 2017: Nano Letters
https://www.readbyqxmd.com/read/28925257/flexible-microsphere-embedded-film-for-microsphere-enhanced-raman-spectroscopy
#9
Cheng Xing, Yinzhou Yan, Chao Feng, Jiayu Xu, Peng Dong, Wei Guan, Yong Zeng, Yan Zhao, Yijian Jiang
Dielectric microspheres with extraordinary microscale optical properties, such as photonic nanojets, optical whispering-gallery modes (WGMs), and directional antennas, have drawn interest in many research fields. Microsphere-enhanced Raman spectroscopy (MERS) is an alternative approach for enhanced Raman detection by dielectric microstructures. Unfortunately, fabrication of microsphere monolayer arrays is the major challenge of MERS for practical applications on various specimen surfaces. Here we report a microsphere-embedded film (MF) by immersing a highly refractive microsphere monolayer array in the poly(dimethylsiloxane) (PDMS) film as a flexible MERS sensing platform for one- to three-dimensional (1D to 3D) specimen surfaces...
September 19, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28924695/charge-splitting-in-situ-recorder-csir-for-real-time-examination-of-plasma-charging-effect-in-finfet-beol-processes
#10
Yi-Pei Tsai, Ting-Huan Hsieh, Chrong Jung Lin, Ya-Chin King
A novel device for monitoring plasma-induced damage in the back-end-of-line (BEOL) process with charge splitting capability is first-time proposed and demonstrated. This novel charge splitting in situ recorder (CSIR) can independently trace the amount and polarity of plasma charging effects during the manufacturing process of advanced fin field-effect transistor (FinFET) circuits. Not only does it reveal the real-time and in situ plasma charging levels on the antennas, but it also separates positive and negative charging effect and provides two independent readings...
September 18, 2017: Nanoscale Research Letters
https://www.readbyqxmd.com/read/28922946/temperature-simulation-of-microwave-ablation-based-on-improved-specific-absorption-rate-method-compared-to-phantom-measurements
#11
Hongjian Gao, Shuicai Wu, Xiaoru Wang, Rui Hu, Zhuhuang Zhou, Xuecong Sun
PURPOSE: To propose an improved specific absorption rate (SAR) computation method by incorporating a thermal conductivity item, develop mathematical simulation models based on the SAR, and enhance the accuracy of temperature simulation for 2450-MHz microwave fields. MATERIALS AND METHODS: Experimental data of 2450-MHz microwave antenna were obtained with a phantom and then new SAR equations were calculated according to Pennes bio-heat transfer equation. Next, the SAR equations were regarded as heating sources and SAR-derived temperature changes were simulated numerically; Finally, temperature measurement results were compared with simulation data to validate the accuracy of the new SAR method...
September 18, 2017: Computer Assisted Surgery (Abingdon, England)
https://www.readbyqxmd.com/read/28922627/distribution-patterns-and-morphology-of-sensilla-on-the-antennae-of-plutella-xylostella-l-a-scanning-and-transmission-electron-microscopic-study
#12
Xi-Zhong Yan, Cai-Ping Deng, Jiao-Xin Xie, Lan-Jun Wu, Xue-Jun Sun, Chi Hao
The antennal morphology, types of antennal sensilla, fine structures and distributions of the sensilla in Plutella xylostella L. (Lepidoptera: Plutellidae) were studied by scanning (SEM) and transmission (TEM) electron microscopy. The antenna, scape, pedicel and flagellum were all longer in males than in females. A total of seventeen types of sensilla were identified on the antennae: trichodea (two subtypes), basiconica, coeloconica (three subtypes), Böhm's bristles (two subtypes), styloconica (two subtypes), squamiformia, auricillica, furcatea (three subtypes), cupuliform organs and terminal sensory pegs...
September 6, 2017: Micron: the International Research and Review Journal for Microscopy
https://www.readbyqxmd.com/read/28918549/loss-of-lhci-system-affects-lhcii-re-distribution-between-thylakoid-domains-upon-state-transitions
#13
Mauro Bressan, Roberto Bassi, Luca Dall'Osto
LHCI, the peripheral antenna system of Photosystem I, includes four light-harvesting proteins (Lhca1-Lhca4) in higher plants, all of which are devoid in the Arabidopsis thaliana knock-out mutant ΔLhca. PSI absorption cross-section was reduced in the mutant, thus affecting the redox balance of the photosynthetic electron chain and resulting in a more reduced PQ with respect to the wild type. ΔLhca plants developed compensatory response by enhancing LHCII binding to PSI. However, the amplitude of state transitions, as measured from changes of chlorophyll fluorescence in vivo, was unexpectedly low than the high level of PSI-LHCII supercomplex established...
September 16, 2017: Photosynthesis Research
https://www.readbyqxmd.com/read/28918475/octopaminergic-innervation-and-a-neurohaemal-release-site-in-the-antennal-heart-of-the-locust-schistocerca-gregaria
#14
Victoria Antemann, Günther Pass, Hans-Joachim Pflüger
A detailed account is given by the octopaminergic innervation of the antennal heart in Schistocerca gregaria using various immunohistochemical methods. Anterograde axonal filling illustrates the unilateral innervation on the medial ventral surface of the pumping muscle of the antennal heart via the paired corpora cardiaca nerve III. In addition, antibody staining revealed that ascending axons of this nerve terminate at the ampullae of the antennal heart forming synaptoid structures and extensive neurohaemal release sites...
September 16, 2017: Journal of Comparative Physiology. A, Neuroethology, Sensory, Neural, and Behavioral Physiology
https://www.readbyqxmd.com/read/28917643/a-novel-3-dimensional-electromagnetic-guidance-system-increases-intraoperative-microwave-antenna-placement-accuracy
#15
Amit V Sastry, Jacob H Swet, Keith J Murphy, Erin H Baker, Dionisios Vrochides, John B Martinie, Iain H McKillop, David A Iannitti
BACKGROUND: Failure to locate lesions and accurately place microwave antennas can lead to incomplete tumor ablation. The Emprint™ SX Ablation Platform employs real-time 3D-electromagnetic spatial antenna tracking to generate intraoperative laparoscopic antenna guidance. We sought to determine whether Emprint™ SX affected time/accuracy of antenna-placement in a laparoscopic training model. METHODS: Targets (7-10 mm) were set in agar within a laparoscopic training device...
September 13, 2017: HPB: the Official Journal of the International Hepato Pancreato Biliary Association
https://www.readbyqxmd.com/read/28916819/continuous-beam-steering-through-broadside-using-asymmetrically-modulated-goubau-line-leaky-wave-antennas
#16
Xiao-Lan Tang, Qingfeng Zhang, Sanming Hu, Yaqiang Zhuang, Abhishek Kandwal, Ge Zhang, Yifan Chen
Goubau line is a single-conductor transmission line, featuring easy integration and low-loss transmission properties. Here, we propose a periodic leaky-wave antenna (LWA) based on planar Goubau transmission line on a thin dielectric substrate. The leaky-wave radiations are generated by introducing periodic modulations along the Goubau line. In this way, the surface wave, which is slow-wave mode supported by the Goubau line, achieves an additional momentum and hence enters the fast-wave region for radiations...
September 15, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28912496/a-magnetometer-based-on-a-spin-wave-interferometer
#17
M Balynsky, D Gutierrez, H Chiang, A Kozhevnikov, G Dudko, Y Filimonov, A A Balandin, A Khitun
We describe a magnetic field sensor based on a spin wave interferometer. Its sensing element consists of a magnetic cross junction with four micro-antennas fabricated at the edges. Two of these antennas are used for spin wave excitation while two other antennas are used for detection of the inductive voltage produced by the interfering spin waves. Two waves propagating in the orthogonal arms of the cross may accumulate significantly different phase shifts depending on the magnitude and direction of the external magnetic field...
September 14, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28912112/molecular-basis-of-peripheral-olfactory-sensing-during-oviposition-in-the-behavior-of-the-parasitic-wasp-anastatus-japonicus
#18
Yinliang Wang, Qi Chen, Junqi Guo, Jing Li, Jiatong Wang, Ming Wen, Hanbo Zhao, Bingzhong Ren
Anastatus japonicus is a parasitic wasp and natural enemy of the litchi pest Tessaratoma papillosa, and for decades in China, A. japonicus has been mass-reared inside the eggs of Antheraea pernyi to control T. papillosa. A series of experiments was performed to explore the olfactory mechanism underlying the oviposition behavior of A. japonicus. First, a transcriptomic analysis was performed on the antennae of A. japonicus, and the resulting assemblies led to the generation of 70,473 unigenes. Subsequently, 21,368 unigenes were matched to known proteins, 48 odorant receptors (ORs) (including Orco) and 13 antennal ionotropic receptors (IRs) (including the co-receptors IR8a and IR25a) were identified and predicted to form complete open reading frames (ORFs)...
September 11, 2017: Insect Biochemistry and Molecular Biology
https://www.readbyqxmd.com/read/28910099/classical-force-fields-tailored-for-qm-applications-is-it-really-a-feasible-strategy
#19
Oliviero Andreussi, Ingrid Guarnetti Prandi, Marco Campetella, Giacomo Prampolini, Benedetta Mennucci
Classical molecular dynamics is more and more often coupled to quantum mechanical based techniques as statistical tool to sample configurations of molecular systems embedded in complex environments. Nonetheless, the classical potentials describing the molecular systems are seldom parameterized to reproduce electronic processes, such as electronic excitations, which are instead very sensitive to the underlining description of the molecular structure. Here we analyze the challenging case of the peridinin molecule, a natural apocarotenoid responsible for the light-harvesting process in the PCP antenna protein of dinoflagellates...
September 14, 2017: Journal of Chemical Theory and Computation
https://www.readbyqxmd.com/read/28906432/total-power-radiometer-for-medical-sensor-applications-using-matched-and-mismatched-noise-sources
#20
Woojin Park, Jinho Jeong
This paper presents a simple total power radiometer to noninvasively measure the temperature of the human body. The proposed 3-GHz radiometer consists of an antenna collecting the noise power generated by a target, a low-noise and high-gain receiver amplifying the noise power, and a detector converting the noise power to voltage. A single-pole-triple-throw (SP3T) switch is placed between the antenna and the receiver, while a personal computer is used to control the SP3T switch, collect and process the data such as detector output voltages and physical temperatures of the reference noise sources and the target...
September 14, 2017: Sensors
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