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https://www.readbyqxmd.com/read/29036165/modeling-open-nanophotonic-systems-using-the-fourier-modal-method-generalization-to-3d-cartesian-coordinates
#1
Teppo Häyrynen, Andreas Dyhl Osterkryger, Jakob Rosenkrantz de Lasson, Niels Gregersen
Recently, an open geometry Fourier modal method based on a new combination of an open boundary condition and a non-uniform k-space discretization was introduced for rotationally symmetric structures, providing a more efficient approach for modeling nanowires and micropillar cavities [J. Opt. Soc. Am. A33, 1298 (2016)JOAOD61084-752910.1364/JOSAA.33.001298]. Here, we generalize the approach to three-dimensional (3D) Cartesian coordinates, allowing for the modeling of rectangular geometries in open space. The open boundary condition is a consequence of having an infinite computational domain described using basis functions that expand the whole space...
September 1, 2017: Journal of the Optical Society of America. A, Optics, Image Science, and Vision
https://www.readbyqxmd.com/read/29036150/simple-approach-to-the-generalized-minkwitz-theorem
#2
Ralf Blendowske
The Minkwitz theorem plays an important role in the design of progressive addition lenses. Recently, this theorem has been generalized by Esser et al. [J. Opt. Soc. Am. A34, 441 (2017)10.1364/JOSAA.34.000441JOAOD60740-3232] to non-umbilic lines under the assumption of a symmetric surface. We present a simplified derivation and generalize their findings to arbitrary but sufficiently smooth surfaces.
September 1, 2017: Journal of the Optical Society of America. A, Optics, Image Science, and Vision
https://www.readbyqxmd.com/read/29036104/orthogonality-breaking-sensing-model-based-on-the-instantaneous-stokes-vector-and-the-mueller-calculus-erratum
#3
Noé Ortega-Quijano, Julien Fade, Muriel Roche, François Parnet, Mehdi Alouini
For J. Opt. Soc. Am. A33, 434 (2016)JOAOD60740-323210.1364/JOSAA.33.000434, a corrected version of Eq. (9) is provided owing to typographical errors in the original article. The original full article text and calculations are unchanged. Another typo is corrected in Eq. (A5) of Appendix A.
August 1, 2017: Journal of the Optical Society of America. A, Optics, Image Science, and Vision
https://www.readbyqxmd.com/read/29036097/quantitative-phase-imaging-method-based-on-an-analytical-nonparaxial-partially-coherent-phase-optical-transfer-function-erratum
#4
Yijun Bao, Thomas K Gaylord
A correction is given for Eq. (8) in J. Opt. Soc. Am. A33, 2125 (2016)JOAOD60740-323210.1364/JOSAA.33.002125.
August 1, 2017: Journal of the Optical Society of America. A, Optics, Image Science, and Vision
https://www.readbyqxmd.com/read/29036066/analytical-theory-of-real-argument-laguerre-gaussian-beams-beyond-the-paraxial-approximation
#5
Ilia A Vovk, Nikita V Tepliakov, Mikhail Yu Leonov, Alexander V Baranov, Anatoly V Fedorov, Ivan D Rukhlenko
We study the propagation of real-argument Laguerre-Gaussian beams beyond the paraxial approximation using the perturbation corrections to the complex-argument Laguerre-Gaussian beams derived earlier by Takenaka et al. [J. Opt. Soc. Am. A2, 826 (1985)JOAOD60740-323210.1364/JOSAA.2.000826]. Each higher-order correction to the amplitude of the real-argument beam (l, m) is represented as a superposition of the same-order corrections to the amplitudes of the complex-argument beams (l, q) with q=0,1,2,…,m. We derive explicit expressions for the electric and magnetic fields of transversely and longitudinally polarized real-argument beams and calculate the chirality densities of these beams up to the fourth order of the smallness parameter...
October 1, 2017: Journal of the Optical Society of America. A, Optics, Image Science, and Vision
https://www.readbyqxmd.com/read/29036059/modeling-astronomical-adaptive-optics-performance-with-temporally-filtered-wiener-reconstruction-of-slope-data
#6
Carlos M Correia, Charlotte Z Bond, Jean-François Sauvage, Thierry Fusco, Rodolphe Conan, Peter L Wizinowich
We build on a long-standing tradition in astronomical adaptive optics (AO) of specifying performance metrics and error budgets using linear systems modeling in the spatial-frequency domain. Our goal is to provide a comprehensive tool for the calculation of error budgets in terms of residual temporally filtered phase power spectral densities and variances. In addition, the fast simulation of AO-corrected point spread functions (PSFs) provided by this method can be used as inputs for simulations of science observations with next-generation instruments and telescopes, in particular to predict post-coronagraphic contrast improvements for planet finder systems...
October 1, 2017: Journal of the Optical Society of America. A, Optics, Image Science, and Vision
https://www.readbyqxmd.com/read/29036046/two-sided-illumination-in-rigorous-coupled-wave-analysis-applied-to-the-4%C3%AF-microscope
#7
André Junker, Karl-Heinz Brenner
We apply the rigorous coupled-wave analysis (RCWA) to the simulation of 4π-microscopy. To achieve this, the concept of structured illumination [J. Opt. Soc. Am. A31, 2385 (2014)JOAOD60740-323210.1364/JOSAA.31.002385] is combined with the idea of coherent two-sided light incidence. We show how the latter can be integrated into the framework of the RCWA. Furthermore, we derive how light sources with different polarization types, such as linear, radial, or azimuthal polarization, can be realized in a general form...
October 1, 2017: Journal of the Optical Society of America. A, Optics, Image Science, and Vision
https://www.readbyqxmd.com/read/29035296/a-wireless-monitoring-system-using-a-tunneling-sensor-array-in-a-smart-oral-appliance-for-sleep-apnea-treatment
#8
Kun-Ying Yeh, Chao-Chi Yeh, Chun-Chang Wu, Kuan Tang, Jyun-Yi Wu, Yun-Ting Chen, Ming-Xin Xu, Yunn-Jy Chen, Yao-Joe Yang, Shey-Shi Lu
Sleep apnea is a serious sleep disorder, and the most common type is obstructive sleep apnea (OSA). Untreated OSA will cause lots of potential health problems. Oral appliance therapy is an effective and popular approach for OSA treatment, but making a perfect fit for each patient is time-consuming and decreases its efficiency considerably. This paper proposes a System-on-a-Chip (SoC) enabled sleep monitoring system in a smart oral appliance, which is capable of intelligently collecting the physiological data about tongue movement through the whole therapy...
October 16, 2017: Sensors
https://www.readbyqxmd.com/read/29035007/large-soil-organic-carbon-increase-due-to-improved-agronomic-management-in-the-north-china-plain-from-1980s-to-2010s
#9
Daorui Han, Martin Wiesmeier, Richard T Conant, Anna Kühnel, Zhigang Sun, Ingrid Kögel-Knabner, Ruixing Hou, Peifei Cong, Rubiao Liang, Zhu Ouyang
Agricultural soils are widely recognized to be capable of carbon sequestration that contributes to mitigating CO2 emissions. To better understand soil organic carbon (SOC) stock dynamics and its driving and controlling factors corresponding with a period of rapid agronomic evolution from the 1980s to the 2010s in the North China Plain (NCP), we collected data from two region-wide soil sampling campaigns (in the 1980s and 2010s) and conducted an analysis of the controlling factors using the random forest model...
September 7, 2017: Global Change Biology
https://www.readbyqxmd.com/read/29033173/source-apportionment-for-fine-particulate-matter-in-a-chinese-city-using-an-improved-gas-constrained-method-and-comparison-with-multiple-receptor-models
#10
Guoliang Shi, Jiayuan Liu, Haiting Wang, Yingze Tian, Jie Wen, Xurong Shi, Yinchang Feng, Cesunica E Ivey, Armistead G Russell
PM2.5 is one of the most studied atmospheric pollutants due to its adverse impacts on human health and welfare and the environment. An improved model (the chemical mass balance gas constraint-Iteration: CMBGC-Iteration) is proposed and applied to identify source categories and estimate source contributions of PM2.5. The CMBGC-Iteration model uses the ratio of gases to PM as constraints and considers the uncertainties of source profiles and receptor datasets, which is crucial information for source apportionment...
October 12, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/29032156/suppressor-of-cytokine-signaling-2-12-regulates-antimicrobial-peptides-and-ecdysteroid-signaling-pathways-in-bombyx-mori-dazao
#11
Muhammad Nadeem Abbas, Bao-Jian Zhu, Saima Kausar, Li-Shang Dai, Yu-Xuan Sun, Ji Wu Tian, Chao-Liang Liu
Suppressors of cytokine signaling (SOCS) are a potent negative regulator of diverse cytokine-related responses to maintain various physiological processes in animals. Here, we obtained the SOCS2-12 gene sequence of Bombyx mori (Dazao) (BmSOCS2-12) from the National Center for Biotechnology Information (NCBI) to study its expression profile in different tissues, as well as in the immune tissues following larval exposure to pathogens. Further, we investigated the role of BmSOCS2-12 in producing antimicrobial peptides (AMPs) and as a regulator of ecdysteroid signaling transduction...
October 12, 2017: Journal of Insect Physiology
https://www.readbyqxmd.com/read/29030784/anti-tnf-%C3%AE-antibody-alleviates-insulin-resistance-in-rats-with-sepsis-induced-stress-hyperglycemia
#12
W Qu, C Han, M Li, J Zhang, Z Jiang
PURPOSE: To explore the effects and mechanisms of anti-tumor necrosis factor-α (TNF-α) antibody on insulin resistance (IR) in rats with sepsis-induced stress hyperglycemia. METHODS: The sepsis-induced stress hyperglycemic rat model was constructed by cecal ligation and puncture combined with the intraperitoneal injection of lipopolysaccharide. The rats were randomly divided into six groups: normal control (NC) group, surgical rats (Cntl) group, high-dose anti-TNF-α antibody therapy (TNF, 6 mg/kg) group, low-dose anti-TNF-α antibody therapy (Tnf, 3 mg/kg) group, insulin therapy (INS) group, and INS + Tnf group...
October 13, 2017: Journal of Endocrinological Investigation
https://www.readbyqxmd.com/read/29025483/depressive-symptoms-and-hazardous-harmful-alcohol-use-are-prevalent-and-correlate-with-stigma-among-tb-hiv-patients-in-lesotho
#13
E Hayes-Larson, Y Hirsch-Moverman, S Saito, K Frederix, B Pitt, L Maama-Maime, A A Howard
SETTING: Limited data exist on the prevalence and correlates, including stigma, of mental health conditions, including depressive symptoms and alcohol use, among patients co-infected with tuberculosis (TB) and the human immunodeficiency virus (HIV) in sub-Saharan Africa, despite their negative impact on health outcomes. OBJECTIVE: To assess the prevalence and correlates of depressive symptoms and hazardous/harmful alcohol use among TB-HIV patients in the Start TB patients on ART and Retain on Treatment (START) study...
November 1, 2017: International Journal of Tuberculosis and Lung Disease
https://www.readbyqxmd.com/read/29022682/self-reported-health-status-predicting-resilience-and-burnout-in-longitudinal-study
#14
Iva Šolcová, Vladimír Kebza, Miloslav Kodl, Věra Kernová
OBJECTIVE: The study examined the links between health-related indicators, adult resilience, and burnout. METHOD: The data were collected during two waves of the longitudinal study (in 2004-05, N=98, and 2011-12, N=88, respectively). Health behaviour, self-rated health (SRH), Sense of Coherence Scale (SOC), and Shirom-Melamed Burnout Measure (SMBM) were measured. RESULTS: The comprehensibility of SOC and physical fatigue of SMBM as measured in wave 2 were determined by SRH as measured in wave 1...
September 2017: Central European Journal of Public Health
https://www.readbyqxmd.com/read/29021579/glomalin-contributed-more-to-carbon-nutrients-in-deeper-soils-and-differently-associated-with-climates-and-soil-properties-in-vertical-profiles
#15
Wenjie Wang, Zhaoliang Zhong, Qiong Wang, Humei Wang, Yujie Fu, Xingyuan He
Despite vital importance in soil conditioning and a proxy for arbuscular mycorrhizal (AMF), glomalin-related soil protein (GRSP) contribution to soil carbon and nutrients at vertical soil profiles and underlying mechanism were not well-defined yet. Thus, 360 soil samples were collected from 72 farmland 1-m soil profiles in northeastern China, and soil physiochemical properties, nutrients, glomalin characteristics, local climates were determined. Linear decreases of glomalin amounts were observed from the top to deep soils, and glomalin/SOC (glomalin ratio to total SOC) in the 80-100 cm soil (EEG, easily-extracted GRSP, 2...
October 11, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29021179/bayesian-and-likelihood-phylogenetic-reconstructions-of-morphological-traits-are-not-discordant-when-taking-uncertainty-into-consideration-a-comment-on-puttick-et%C3%A2-al
#16
Joseph W Brown, Caroline Parins-Fukuchi, Gregory W Stull, Oscar M Vargas, Stephen A Smith
Puttick et al. (2017 Proc. R. Soc. B284, 20162290 (doi:10.1098/rspb.2016.2290)) performed a simulation study to compare accuracy among methods of inferring phylogeny from discrete morphological characters. They report that a Bayesian implementation of the Mk model (Lewis 2001 Syst. Biol.50, 913-925 (doi:10.1080/106351501753462876)) was most accurate (but with low resolution), while a maximum-likelihood (ML) implementation of the same model was least accurate. They conclude by strongly advocating that Bayesian implementations of the Mk model should be the default method of analysis for such data...
October 11, 2017: Proceedings. Biological Sciences
https://www.readbyqxmd.com/read/29019494/relativistic-dft-investigation-of-electronic-structure-effects-arising-from-doping-the-au25-nanocluster-with-transition-metals
#17
Fahri Alkan, Alvaro Muñoz-Castro, Christine M Aikens
We perform a theoretical investigation using density functional theory (DFT) and time-dependent DFT (TDDFT) on the doping of the Au25(SR)18(-1) nanocluster with group IX transition metals (M = cobalt, rhodium and iridium). Different doping motifs, charge states and spin multiplicities were considered for the single-atom doped nanoclusters. Our results show that the interaction (or the lack of interaction) between the d-type energy levels that mainly originate from the dopant atom and the super-atomic levels plays an important role in the energetics, the electronic structure and the optical properties of the doped systems...
October 11, 2017: Nanoscale
https://www.readbyqxmd.com/read/29017916/conflict-detection-and-resolution-rely-on-a-combination-of-common-and-distinct-cognitive-control-networks
#18
REVIEW
Qi Li, Guochun Yang, Zhenghan Li, Yanyan Qi, Michael Cole, Xun Liu
Cognitive control can be activated by stimulus-stimulus (S-S) and stimulus-response (S-R) conflicts. However, whether cognitive control is domain-general or domain-specific remains unclear. To deepen the understanding of the functional organization of cognitive control networks, we conducted activation likelihood estimation (ALE) from 111 neuroimaging studies to examine brain activation in conflict-related tasks. We observed that fronto-parietal and cingulo-opercular networks were commonly engaged by S-S and S-R conflicts, showing a domain-general pattern...
October 7, 2017: Neuroscience and Biobehavioral Reviews
https://www.readbyqxmd.com/read/29017323/dft-and-afir-study-on-the-mechanism-and-the-origin-of-enantioselectivity-in-iron-catalyzed-cross-coupling-reactions
#19
Akhilesh K Sharma, W M Chamil Sameera, Masayoshi Jin, Laksmikanta Adak, Chiemi Okuzono, Takahiro Iwamoto, Masako Kato, Masaharu Nakamura, Keiji Morokuma
Mechanism of the full catalytic cycle for Fe-chiral-bisphosphine catalyzed cross-coupling reaction between alkyl halides and the Grignard reagents (Nakamura and co-workers, J. Am. Chem. Soc. 2015, 137, 7128) was rationalized by using density functional theory (DFT) and artificial force induced reaction (AFIR) methods. The computed mechanism consists of (a) C-Cl activation, (b) transmetalation, (c) C-Fe bond formation, and (d) C-C bond formation through reductive elimination. Our survey on the pre-reactant complexes suggested that formation of Fe(II)(BenzP*)Ph22 and Fe(I)(BenzP*)Ph complexes are thermodynamically feasible...
October 11, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/28993634/changes-in-soil-properties-x-ray-mineral-diffractions-and-infrared-functional-groups-in-bulk-soil-and-fractions-following-afforestation-of-farmland-northeast-china
#20
Qiong Wang, Wenjie Wang, Xingyuan He, Qingfu Zheng, Huimei Wang, Yan Wu, Zhaoliang Zhong
Analysis of soil properties, the compositional traits in bulk soil and different fractions and their responses to afforestation practices may possibly facilitate clarification of the mechanisms underlying soil changes. Soil properties, the compositional functional groups and minerals were determined in the bulk soil and fractions from forests and adjacent farmlands. The afforestation of farmland could induce accumulation of soil organic carbon [SOC] (+18%) and nitrogen [N] (+4%) with pH increase (+4%), and declines in electric conductivity (-15%) and bulk density (-3%)...
October 9, 2017: Scientific Reports
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