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https://www.readbyqxmd.com/read/28538724/applying-systems-level-spectral-imaging-and-analysis-to-reveal-the-organelle-interactome
#1
Alex M Valm, Sarah Cohen, Wesley R Legant, Justin Melunis, Uri Hershberg, Eric Wait, Andrew R Cohen, Michael W Davidson, Eric Betzig, Jennifer Lippincott-Schwartz
The organization of the eukaryotic cell into discrete membrane-bound organelles allows for the separation of incompatible biochemical processes, but the activities of these organelles must be coordinated. For example, lipid metabolism is distributed between the endoplasmic reticulum for lipid synthesis, lipid droplets for storage and transport, mitochondria and peroxisomes for β-oxidation, and lysosomes for lipid hydrolysis and recycling. It is increasingly recognized that organelle contacts have a vital role in diverse cellular functions...
May 24, 2017: Nature
https://www.readbyqxmd.com/read/28534815/multispectral-fluorescent-and-photoplethysmographic-imaging-for-remote-skin-assessment
#2
REVIEW
Janis Spigulis
Optical tissue imaging has several advantages over the routine clinical imaging methods, including non-invasiveness (it does not change the structure of tissues), remote operation (it avoids infections) and the ability to quantify the tissue condition by means of specific image parameters. Dermatologists and other skin experts need compact (preferably pocket-size), self-sustaining and easy-to-use imaging devices. The operational principles and designs of ten portable in-vivo skin imaging prototypes developed at the Biophotonics Laboratory of Institute of Atomic Physics and Spectroscopy, University of Latvia during the recent five years are presented in this paper...
May 19, 2017: Sensors
https://www.readbyqxmd.com/read/28518117/simultaneous-evaluation-of-cerebral-hemodynamics-and-light-scattering-properties-of-the-in-vivo-rat-brain-using-multispectral-diffuse-reflectance-imaging
#3
Izumi Nishidate, Afrina Mustari, Satoko Kawauchi, Shunichi Sato, Manabu Sato
The simultaneous evaluation of cerebral hemodynamics and the light scattering properties of in vivo rat brain tissue is demonstrated using a conventional multispectral diffuse reflectance imaging system. This system is constructed from a broadband white light source, a motorized filter wheel with a set of narrowband interference filters, a light guide, a collecting lens, a video zoom lens, and a monochromatic charged-coupled device (CCD) camera. An ellipsoidal cranial window is made in the skull bone of a rat under isoflurane anesthesia to capture in vivo multispectral diffuse reflectance images of the cortical surface...
May 7, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28518067/remote-sensing-evaluation-of-two-spotted-spider-mite-damage-on-greenhouse-cotton
#4
Daniel E Martin, Mohamed A Latheef
The objective of this study was to evaluate a ground-based multispectral optical sensor as a remote sensing tool to assess foliar damage caused by the two-spotted spider mite (TSSM), Tetranychus urticae Koch, on greenhouse grown cotton. TSSM is a polyphagous pest which occurs on a variety of field and horticultural crops. It often becomes an early season pest of cotton in damaging proportions as opposed to being a late season innocuous pest in the mid-southern United States. Evaluation of acaricides is important for maintaining the efficacy of and preventing resistance to the currently available arsenal of chemicals and newly developed control agents...
April 28, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28492515/remote-sensing-for-crop-water-management-from-et-modelling-to-services-for-the-end-users
#5
REVIEW
Alfonso Calera, Isidro Campos, Anna Osann, Guido D'Urso, Massimo Menenti
The experiences gathered during the past 30 years support the operational use of irrigation scheduling based on frequent multi-spectral image data. Currently, the operational use of dense time series of multispectral imagery at high spatial resolution makes monitoring of crop biophysical parameters feasible, capturing crop water use across the growing season, with suitable temporal and spatial resolutions. These achievements, and the availability of accurate forecasting of meteorological data, allow for precise predictions of crop water requirements with unprecedented spatial resolution...
May 11, 2017: Sensors
https://www.readbyqxmd.com/read/28470795/multispectral-diffusion-weighted-imaging-near-metal-implants
#6
Kevin M Koch, Sampada Bhave, Ajeet Gaddipati, Brian A Hargreaves, Dawei Gui, Robert Peters, Meena Bedi, Rajeev Mannem, S Sivaram Kaushik
PURPOSE: The need for diffusion-weighted-imaging (DWI) near metallic implants is becoming increasingly relevant for a variety of clinical diagnostic applications. Conventional DWI methods are significantly hindered by metal-induced image artifacts. A novel approach relying on multispectral susceptibility artifact reduction techniques is presented to address this unmet need. METHODS: DWI near metal implants is achieved through a combination of several advanced MRI acquisition technologies...
May 3, 2017: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
https://www.readbyqxmd.com/read/28468573/frequency-representation-visualization-and-clustering-of-acoustic-data-using-self-organizing-maps
#7
Xinhua Guo, Song Sun, Xiantao Yu, Pan Wang, Kentaro Nakamura
Extraction and display of frequency information in three-dimensional (3D) acoustic data are important steps to analyze object characteristics, because the characteristics, such as profiles, sizes, surface structures, and material properties, may show frequency dependence. In this study, frequency representation (FR) based on phase information in multispectral acoustic imaging (MSAI) is proposed to overcome the limit of intensity or amplitude information in image display. Experiments are performed on 3D acoustic data collected from a rigid surface engraved with five different letters...
May 1, 2017: Ultrasonic Imaging
https://www.readbyqxmd.com/read/28445432/multispectral-lidar-data-for-land-cover-classification-of-urban-areas
#8
Salem Morsy, Ahmed Shaker, Ahmed El-Rabbany
Airborne Light Detection And Ranging (LiDAR) systems usually operate at a monochromatic wavelength measuring the range and the strength of the reflected energy (intensity) from objects. Recently, multispectral LiDAR sensors, which acquire data at different wavelengths, have emerged. This allows for recording of a diversity of spectral reflectance from objects. In this context, we aim to investigate the use of multispectral LiDAR data in land cover classification using two different techniques. The first is image-based classification, where intensity and height images are created from LiDAR points and then a maximum likelihood classifier is applied...
April 26, 2017: Sensors
https://www.readbyqxmd.com/read/28436752/quantitative-mr-imaging-of-intra-orbital-structures-tissue-specific-measurements-and-age-dependency-compared-to-extra-orbital-structures-using-multispectral-quantitative-mr-imaging
#9
Memi Watanabe, Karen Buch, Akifumi Fujita, Hernán Jara, Muhammad Mustafa Qureshi, Osamu Sakai
The orbit can be affected by unique pathologic conditions and often requires MRI evaluation. The purpose of this study was to investigate the age-related changes in multiple intra-orbital structures using quantitative MRI (qMRI). Thirty-eight subjects (20 males, 18 females; ages 0.5-87 years) underwent MRI with a mixed turbo spin echo sequence. T1 and T2 measurements were obtained within ROI in 6 intra-orbital structures (medial and lateral rectus muscles, medial and lateral retrobulbar fat, lacrimal gland, and optic nerve), and compared with those of corresponding extra-orbital structures (masseter muscle, subcutaneous cheek fat, buccal fat, parotid gland, and frontal white matter)...
April 24, 2017: Orbit
https://www.readbyqxmd.com/read/28432219/optimized-cubic-protocol-for-3d-imaging-of-chicken-embryos-at-single-cell-resolution
#10
María Victoria Gómez-Gaviro, Evan Balaban, Diana Bocancea, María Teresa Lorrio, María Pompeiano, Manuel Desco, Jorge Ripoll, Juan José Vaquero
The CUBIC tissue clearing protocol has been optimized to produce translucent immunostained whole chicken embryos and embryo brains. When combined with multispectral light sheet microscopy, the validated protocol presented here provides a rapid, inexpensive and reliable method for acquiring accurate histological images that preserve three-dimensional structural relationships with single-cell-level resolution in whole early-stage chicken embryos, and in the whole brains of late-stage embryos.
April 21, 2017: Development
https://www.readbyqxmd.com/read/28421831/a-novel-automated-slide-based-technology-for-visualization-counting-and-characterization-of-the-formed-elements-of-blood-a-proof-of-concept-study
#11
James W Winkelman, Milenko J Tanasijevic, David J Zahniser
CONTEXT: - A novel automated slide-based approach to the complete blood count and white blood cell differential count is introduced. OBJECTIVE: - To present proof of concept for an image-based approach to complete blood count, based on a new slide preparation technique. A preliminary data comparison with the current flow-based technology is shown. DESIGN: - A prototype instrument uses a proprietary method and technology to deposit a precise volume of undiluted peripheral whole blood in a monolayer onto a glass microscope slide so that every cell can be distinguished, counted, and imaged...
April 19, 2017: Archives of Pathology & Laboratory Medicine
https://www.readbyqxmd.com/read/28417282/coastal-modification-of-a-scene-employing-multispectral-images-and-vector-operators
#12
Jorge Lira
Changes in sea level, wind patterns, sea current patterns, and tide patterns have produced morphologic transformations in the coastline area of Tamaulipas Sate in North East Mexico. Such changes generated a modification of the coastline and variations of the texture-relief and texture of the continental area of Tamaulipas. Two high-resolution multispectral satellite Satellites Pour l'Observation de la Terre images were employed to quantify the morphologic change of such continental area. The images cover a time span close to 10 years...
May 2017: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/28413907/interaction-of-dextromethorphan-hydrobromide-with-dna-multispectral-voltammetric-and-molecular-docking-technology
#13
Shuyun Bi, Huifeng Zhou, Jun Wu, Yu Wang
No abstract text is available yet for this article.
April 16, 2017: Journal of Biomolecular Structure & Dynamics
https://www.readbyqxmd.com/read/28402101/synergistically-enhanced-performance-of-ultrathin-nanostructured-silicon-solar-cells-embedded-in-plasmonically-assisted-multispectral-luminescent-waveguides
#14
Sung-Min Lee, Purnim Dhar, Huandong Chen, Angelo Montenegro, Lauren Liaw, Dongseok Kang, Boju Gai, Alexander V Benderskii, Jongseung Yoon
Ultrathin silicon solar cells fabricated by anisotropic wet chemical etching of single-crystalline wafer materials represent an attractive materials platform that could provide many advantages for realizing high-performance, low-cost photovoltaics. However, their intrinsically limited photovoltaic performance arising from insufficient absorption of low-energy photons demands careful design of light management to maximize the efficiency and preserve the cost-effectiveness of solar cells. Herein we present an integrated flexible solar module of ultrathin, nanostructured silicon solar cells capable of simultaneously exploiting spectral upconversion and downshifting in conjunction with multispectral luminescent waveguides and a nanostructured plasmonic reflector to compensate for their weak optical absorption and enhance their performance...
April 25, 2017: ACS Nano
https://www.readbyqxmd.com/read/28400990/classifications-of-multispectral-colorectal-cancer-tissues-using-convolution-neural-network
#15
Hawraa Haj-Hassan, Ahmad Chaddad, Youssef Harkouss, Christian Desrosiers, Matthew Toews, Camel Tanougast
BACKGROUND: Colorectal cancer (CRC) is the third most common cancer among men and women. Its diagnosis in early stages, typically done through the analysis of colon biopsy images, can greatly improve the chances of a successful treatment. This paper proposes to use convolution neural networks (CNNs) to predict three tissue types related to the progression of CRC: benign hyperplasia (BH), intraepithelial neoplasia (IN), and carcinoma (Ca). METHODS: Multispectral biopsy images of thirty CRC patients were retrospectively analyzed...
2017: Journal of Pathology Informatics
https://www.readbyqxmd.com/read/28390483/transferring-results-from-nir-hyperspectral-to-nir-multispectral-imaging-systems-a-filter-based-simulation-applied-to-the-classification-of-arabica-and-robusta-green-coffee
#16
Rosalba Calvini, Jose Manuel Amigo, Alessandro Ulrici
Due to the differences in terms of both price and quality, the availability of effective instrumentation to discriminate between Arabica and Robusta coffee is extremely important. To this aim, the use of multispectral imaging systems could provide reliable and accurate real-time monitoring at relatively low costs. However, in practice the implementation of multispectral imaging systems is not straightforward: the present work investigates this issue, starting from the outcome of variable selection performed using a hyperspectral system...
May 15, 2017: Analytica Chimica Acta
https://www.readbyqxmd.com/read/28384705/excitation-resolved-multispectral-method-for-imaging-pharmacokinetic-parameters-in-dynamic-fluorescent-molecular-tomography
#17
Maomao Chen, Yuan Zhou, Han Su, Dong Zhang, Jianwen Luo
No abstract text is available yet for this article.
April 1, 2017: Journal of Biomedical Optics
https://www.readbyqxmd.com/read/28380735/three-dimensional-dynamic-measurements-of-ch-and-c2-concentrations-in-flame-using-simultaneous-chemiluminescence-tomography
#18
Ying Jin, Yang Song, Xiangju Qu, Zhenhua Li, Yunjing Ji, Anzhi He
The species concentrations of flame chemiluminescence play important role in combustion diagnostics, such as CH* and C2* of hydrocarbon flame, which can provide specific characteristics in combustion control and monitoring. In order to realize both CH* and C2* chemiluminescence intensity detection in propane-air diffusion flame simultaneously, we present three-dimensional dynamic flame detecting method for species concentration determination. Firstly, quantitative flame chemiluminescence multispectral separation technique based on color cameras coupled with double-channel bandpass filters is adopted for dual channel signal division...
March 6, 2017: Optics Express
https://www.readbyqxmd.com/read/28378810/composite-functional-metasurfaces-for-multispectral-achromatic-optics
#19
Ori Avayu, Euclides Almeida, Yehiam Prior, Tal Ellenbogen
Nanostructured metasurfaces offer unique capabilities for subwavelength control of optical waves. Based on this potential, a large number of metasurfaces have been proposed recently as alternatives to standard optical elements. In most cases, however, these elements suffer from large chromatic aberrations, thus limiting their usefulness for multiwavelength or broadband applications. Here, in order to alleviate the chromatic aberrations of individual diffractive elements, we introduce dense vertical stacking of independent metasurfaces, where each layer is made from a different material, and is optimally designed for a different spectral band...
April 5, 2017: Nature Communications
https://www.readbyqxmd.com/read/28378400/interaction-between-azo-dye-acid-red-14-and-pepsin-by-multispectral-methods-and-docking-studies
#20
Ludan Zhao, Ronghui Guo, Qiaomei Sun, Jianwu Lan, Hui Li
The interaction of synthetic azo dye Acid Red 14 with pepsin was studied by fluorescence spectroscopy, UV-vis spectroscopy, circular dichroism and molecular docking. Results from the fluorescence spectroscopy show that Acid Red 14 has a strong capability to quench the intrinsic fluorescence of pepsin with static quenching. Binding constant, number of the binding sites and thermodynamic parameters were measured at different temperatures. The result indicates that Acid Red 14 interact with pepsin spontaneously by hydrogen bonding and van der Waals interactions...
April 5, 2017: Luminescence: the Journal of Biological and Chemical Luminescence
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