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https://www.readbyqxmd.com/read/28194960/a-new-method-for-non-invasive-analysis-of-proteins-and-small-molecules-from-ancient-objects
#1
Marcello Manfredi, Elettra Barberis, Fabio Gosetti, Eleonora Conte, Giorgio Gatti, Clara Mattu, Elisa Robotti, Gleb Zilberstein, Igor Koman, Svetlana Zilberstein, Emilio Marengo, Pier Giorgio Righetti
Proteins and small molecules from ancient objects and cultural heritage can provide key information and contribute to study the context of objects and artists. However, all present- day protocols and strategies for the analysis of ancient samples are often invasive and require micro sampling. Here, we present a new method for the non-invasive analysis of proteins and small molecules: the technique uses a special ethyl-vinyl acetate film functionalized with strong cation/anion exchange and C8 resins, for interacting with both proteins and small molecules present on the surface of the objects, followed by LC-MS/MS analysis...
February 8, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28191450/remotely-triggered-nano-theranostics-for-cancer-applications
#2
Alexandra Sneider, Derek VanDyke, Shailee Paliwal, Prakash Rai
Nanotechnology has enabled the development of smart theranostic platforms that can concurrently diagnose disease, start primary treatment, monitor response, and, if required, initiate secondary treatments. Recent in vivo experiments demonstrate the promise of using theranostics in the clinic. In this paper, we review the use of remotely triggered theranostic nanoparticles for cancer applications, focusing heavily on advances in the past five years. Remote triggering mechanisms covered include photodynamic, photothermal, phototriggered chemotherapeutic release, ultrasound, electro-thermal, magneto-thermal, X-ray, and radiofrequency therapies...
2017: Nanotheranostics (Syd)
https://www.readbyqxmd.com/read/28188636/fluorescence-hyperspectral-imaging-technique-for-foreign-substance-detection-on-fresh-cut-lettuce
#3
Changyeun Mo, Giyoung Kim, Moon S Kim, Jongguk Lim, Hyunjeong Cho, Jinyoung Yang Barnaby, Byoung-Kwan Cho
BACKGROUND: Nondestructive methods based on fluorescence hyperspectral imaging (HSI) techniques were developed to detect worms on fresh-cut lettuce. The optimal wavebands for detecting the worms were investigated using the one-way ANOVA and correlation analyses. RESULTS: The worm detection imaging algorithms, RSI-I(492-626)/492 , provided a prediction accuracy of 99.0%. The fluorescence HSI techniques indicated that the spectral images with a pixel size of 1 × 1 mm had the best classification accuracy for worms...
February 11, 2017: Journal of the Science of Food and Agriculture
https://www.readbyqxmd.com/read/28182554/weight-multispectral-reconstruction-strategy-for-enhanced-reconstruction-accuracy-and-stability-with-cerenkov-luminescence-tomography
#4
Hongbo Guo, Xiaowei He, Muhan Liu, Zeyu Zhang, Zhenhua Hu, Jie Tian
Cerenkov luminescence tomography (CLT) provides a novel technique for three-dimensional (3D) noninvasive detection of radiopharmaceuticals in living subjects. However, because of the severe scattering of Cerenkov light, the reconstruction accuracy and stability of CLT is still unsatisfied. In this study, a modified weight multispectral CLT (wmCLT) reconstruction strategy was developed which split the Cerenkov radiation (CR) spectrum into several sub-spectral bands and weighted the subspectral results to obtain the final result...
February 2, 2017: IEEE Transactions on Medical Imaging
https://www.readbyqxmd.com/read/28180140/land-use-and-land-cover-data-changes-in-indian-ocean-islands-case-study-of-unguja-in-zanzibar-island
#5
Sizah Mwalusepo, Eliud Muli, Asha Faki, Suresh Raina
Land use and land cover changes will continue to affect resilient human communities and ecosystems as a result of climate change. However, an assessment of land use and land cover changes over time in Indian Ocean Islands is less documented. The land use/cover data changes over 10 years at smaller geographical scale across Unguja Island in Zanzibar were analyzed. Downscaling of the data was obtained from SERVIR through partnership with Kenya-based Regional Centre for Mapping of Resources for Development (RCMRD) database (http://www...
April 2017: Data in Brief
https://www.readbyqxmd.com/read/28178524/astrocytes-resist-hiv-1-fusion-but-engulf-infected-macrophage-material
#6
Rebecca A Russell, Jakub Chojnacki, Daniel M Jones, Errin Johnson, Thao Do, Christian Eggeling, Sergi Padilla-Parra, Quentin J Sattentau
HIV-1 disseminates to diverse tissues and establishes long-lived viral reservoirs. These reservoirs include the CNS, in which macrophage-lineage cells, and as suggested by many studies, astrocytes, may be infected. Here, we have investigated astrocyte infection by HIV-1. We confirm that astrocytes trap and internalize HIV-1 particles for subsequent release but find no evidence that these particles infect the cell. Astrocyte infection was not observed by cell-free or cell-to-cell routes using diverse approaches, including luciferase and GFP reporter viruses, fixed and live-cell fusion assays, multispectral flow cytometry, and super-resolution imaging...
February 7, 2017: Cell Reports
https://www.readbyqxmd.com/read/28167652/correction-multispectral-imaging-of-t-and-b-cells-in-murine-spleen-and-tumor
#7
Zipei Feng, Shawn M Jensen, David J Messenheimer, Mohammad Farhad, Michael Neuberger, Carlo B Bifulco, Bernard A Fox
No abstract text is available yet for this article.
February 15, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28166417/detection-of-microspheres-in-vivo-using-multispectral-optoacoustic-tomography
#8
N Bhutiani, C W Kimbrough, N C Burton, S Morscher, M Egger, K McMasters, A Woloszynska-Read, A El-Baz, L R McNally
We introduce a new approach to detect individual microparticles that contain NIR fluorescent dye by multispectral optoacoustic tomography in the context of the hemoglobin-rich environment within murine liver. We encapsulated a near infrared (NIR) fluorescent dye within polystyrene microspheres, then injected them into the ileocolic vein, which drains to the liver. NIR absorption was determined using multispectral optoacoustic tomography. To quantitate the minimum diameter of microspheres, we used both colorimetric and spatial information to segment the regions in which the microspheres appear...
February 6, 2017: Biotechnic & Histochemistry: Official Publication of the Biological Stain Commission
https://www.readbyqxmd.com/read/28149926/tissue-classification-for-laparoscopic-image-understanding-based-on-multispectral-texture-analysis
#9
Yan Zhang, Sebastian J Wirkert, Justin Iszatt, Hannes Kenngott, Martin Wagner, Benjamin Mayer, Christian Stock, Neil T Clancy, Daniel S Elson, Lena Maier-Hein
Intraoperative tissue classification is one of the prerequisites for providing context-aware visualization in computer-assisted minimally invasive surgeries. As many anatomical structures are difficult to differentiate in conventional RGB medical images, we propose a classification method based on multispectral image patches. In a comprehensive ex vivo study through statistical analysis, we show that (1) multispectral imaging data are superior to RGB data for organ tissue classification when used in conjunction with widely applied feature descriptors and (2) combining the tissue texture with the reflectance spectrum improves the classification performance...
January 2017: Journal of Medical Imaging
https://www.readbyqxmd.com/read/28149879/can-multispectral-optoacoustic-tomography-replace-sentinel-lymph-biopsy-in-melanoma
#10
EDITORIAL
Stanley P L Leong, Sri-Rajasekhar Kothapalli, Sanjiv Sam Gambhir
No abstract text is available yet for this article.
December 2016: Annals of Translational Medicine
https://www.readbyqxmd.com/read/28145475/diffuse-optical-spectroscopy-and-imaging-to-detect-and-quantify-adipose-tissue-browning
#11
U S Dinish, Chi Lok Wong, Sandhya Sriram, Wee Kiat Ong, Ghayathri Balasundaram, Shigeki Sugii, Malini Olivo
Adipose (fat) tissue is a complex metabolic organ that is highly active and essential. In contrast to white adipose tissue (WAT), brown adipose tissue (BAT) is deemed metabolically beneficial because of its ability to burn calories through heat production. The conversion of WAT-resident adipocytes to "beige" or "brown-like" adipocytes has recently attracted attention. However, it typically takes a few days to analyze and confirm this browning of WAT through conventional molecular, biochemical, or histological methods...
February 1, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28131908/multispectral-3d-phase-encoded-turbo-spin-echo-for-imaging-near-metal-limitations-and-possibilities-demonstrated-by-simulations-and-phantom-experiments
#12
Jetse S van Gorp, Razmara Nizak, Job G Bouwman, Daniël B F Saris, Peter R Seevinck
To see improvements in the imaging performance near biomaterial implants we assessed a multispectral fully phase-encoded turbo spin-echo (ms3D-PE-TSE) sequence for artifact reduction capabilities and scan time efficiency in simulation and phantom experiments. For this purpose, ms3D-PE-TSE and ms3D-TSE sequences were implemented to obtain multispectral images (±20kHz) of a cobalt-chromium (CoCr) knee implant embedded in agarose. In addition, a knee implant computer model and the acquired ms3D-PE-TSE images were used to investigate the possibilities for scan time acceleration using field-of-view (FOV) reduction for off-resonance frequency bins and compressed sensing reconstructions of undersampled data...
January 25, 2017: Magnetic Resonance Imaging
https://www.readbyqxmd.com/read/28128555/correction-to-genetically-encoded-multispectral-labeling-of-proteins-with-polyfluorophores-on-a-dna-backbone
#13
Vijay Singh, Shenliang Wang, Ke Min Chan, Spencer A Clark, Eric T Kool
No abstract text is available yet for this article.
January 27, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/28128300/efficient-single-pixel-multispectral-imaging-via-non-mechanical-spatio-spectral-modulation
#14
Ziwei Li, Jinli Suo, Xuemei Hu, Chao Deng, Jingtao Fan, Qionghai Dai
Combining spectral imaging with compressive sensing (CS) enables efficient data acquisition by fully utilizing the intrinsic redundancies in natural images. Current compressive multispectral imagers, which are mostly based on array sensors (e.g, CCD or CMOS), suffer from limited spectral range and relatively low photon efficiency. To address these issues, this paper reports a multispectral imaging scheme with a single-pixel detector. Inspired by the spatial resolution redundancy of current spatial light modulators (SLMs) relative to the target reconstruction, we design an all-optical spectral splitting device to spatially split the light emitted from the object into several counterparts with different spectrums...
January 27, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28125055/fusion-of-high-resolution-multispectral-imagery-in-vulnerable-coastal-and-land-ecosystems
#15
Edurne Ibarrola-Ulzurrun, Consuelo Gonzalo-Martin, Javier Marcello-Ruiz, Angel Garcia-Pedrero, Dionisio Rodriguez-Esparragon
Ecosystems provide a wide variety of useful resources that enhance human welfare, but these resources are declining due to climate change and anthropogenic pressure. In this work, three vulnerable ecosystems, including shrublands, coastal areas with dunes systems and areas of shallow water, are studied. As far as these resources' reduction is concerned, remote sensing and image processing techniques could contribute to the management of these natural resources in a practical and cost-effective way, although some improvements are needed for obtaining a higher quality of the information available...
January 25, 2017: Sensors
https://www.readbyqxmd.com/read/28120950/fencing-bodes-a-rapid-collapse-of-the-unique-greater-mara-ecosystem
#16
Mette Løvschal, Peder Klith Bøcher, Jeppe Pilgaard, Irene Amoke, Alice Odingo, Aggrey Thuo, Jens-Christian Svenning
With land privatization and fencing of thousands of hectares of communal grazing areas, East Africa is struggling with one of the most radical cultural and environmental changes in its history. The 668,500-hectare Greater Mara is of crucial importance for the great migrations of large mammals and for Maasai pastoralist culture. However, the magnitude and pace of these fencing processes in this area are almost completely unknown. We provide new evidence that fencing is appropriating land in this area at an unprecedented and accelerating speed and scale...
January 25, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28113904/fusion-of-multispectral-and-panchromatic-images-based-on-morphological-operators
#17
Rocco Restaino, Gemine Vivone, Mauro Dalla Mura, Jocelyn Chanussot
Nonlinear decomposition schemes constitute an alternative to classical approaches for facing the problem of data fusion. In this paper we discuss the application of this methodology to a popular remote sensing application called pansharpening, which consists in the fusion of a low resolution multispectral image and a high resolution panchromatic image. We design a complete pansharpening scheme based on the use of morphological half gradients operators and demonstrate the suitability of this algorithm through the comparison with state of the art approaches...
April 20, 2016: IEEE Transactions on Image Processing: a Publication of the IEEE Signal Processing Society
https://www.readbyqxmd.com/read/28098797/nonlinear-fusion-of-multispectral-citrus-fruit-image-data-with-information-contents
#18
Peilin Li, Sang-Heon Lee, Hung-Yao Hsu, Jae-Sam Park
The main issue of vison-based automatic harvesting manipulators is the difficulty in the correct fruit identification in the images under natural lighting conditions. Mostly, the solution has been based on a linear combination of color components in the multispectral images. However, the results have not reached a satisfactory level. To overcome this issue, this paper proposes a robust nonlinear fusion method to augment the original color image with the synchronized near infrared image. The two images are fused with Daubechies wavelet transform (DWT) in a multiscale decomposition approach...
January 13, 2017: Sensors
https://www.readbyqxmd.com/read/28091610/evaluation-of-hyperspectral-lidar-for-monitoring-rice-leaf-nitrogen-by-comparison-with-multispectral-lidar-and-passive-spectrometer
#19
Jia Sun, Shuo Shi, Wei Gong, Jian Yang, Lin Du, Shalei Song, Biwu Chen, Zhenbing Zhang
Fast and nondestructive assessment of leaf nitrogen concentration (LNC) is critical for crop growth diagnosis and nitrogen management guidance. In the last decade, multispectral LiDAR (MSL) systems have promoted developments in the earth and ecological sciences with the additional spectral information. With more wavelengths than MSL, the hyperspectral LiDAR (HSL) system provides greater possibilities for remote sensing crop physiological conditions. This study compared the performance of ASD FieldSpec Pro FR, MSL, and HSL for estimating rice (Oryza sativa) LNC...
January 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28067770/assessment-of-pansharpening-methods-applied-to-worldview-2-imagery-fusion
#20
Hui Li, Linhai Jing, Yunwei Tang
Since WorldView-2 (WV-2) images are widely used in various fields, there is a high demand for the use of high-quality pansharpened WV-2 images for different application purposes. With respect to the novelty of the WV-2 multispectral (MS) and panchromatic (PAN) bands, the performances of eight state-of-art pan-sharpening methods for WV-2 imagery including six datasets from three WV-2 scenes were assessed in this study using both quality indices and information indices, along with visual inspection. The normalized difference vegetation index, normalized difference water index, and morphological building index, which are widely used in applications related to land cover classification, the extraction of vegetation areas, buildings, and water bodies, were employed in this work to evaluate the performance of different pansharpening methods in terms of information presentation ability...
January 5, 2017: Sensors
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