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268 results for “portable”
Addressable Nanoantennas with Cleared Hotspots for Single-Molecule Detection on a Portable Smartphone Microscope
<p>The advent of highly sensitive photodetectors and the development of photostabilization strategies made detecting the fluorescence of single molecules a routine task in many labs around the world. However, to this day, this process requires cost-intensive optical instruments due to the truly nanoscopic signal of a single emitter. Simplifying single-molecule detection would enable many exciting applications, <em>e.g.</em> in point-of-care diagnostic settings, where costly equipment would be prohibitive. Here, we introduce addressable NanoAntennas with Cleared HOtSpots (NACHOS) that are scaffolded by DNA origami nanostructures and can be specifically tailored for the incorporation of bioassays. Single emitters placed in the NACHOS emit up to 461-fold (average of 89±7-fold) brighter enabling their detection with a customary smartphone camera and an 8-US-dollar objective lens. To prove the applicability of our system, we built a portable, battery-powered smartphone microscope and successfully carried out an exemplary single-molecule detection assay for DNA specific to antibiotic-resistant <em>Klebsiella pneumonia</em> „on the road “. Here we demonstrate the raw data on which our findings based on.</p>
Data from Portable Ice Nucleation Experiment during the Pallas Cloud Experiment 2022
<div> </div> <div> </div> <div>The data set contains data from the Portable Ice Nucleation Experiment during the Pallas Cloud Experiment 2022. The Level 1 data is given in its raw temporal resolution and the data is flagged. Invalid data should be removed before analysis.</div>
IODP Expedition 391 Portable X-ray fluorescence (p-XRF)
Energy-Dispersive X-Ray Fluorescence (ED-XRF) is a rapid, non-destructive technique for determining qualitative and quantitative changes in chemical composition. Aboard the JOIDES Resolution, pXRF is used for measuring points on section halves, rock pieces, and sometimes powders. Spots are typically irradiated at multiple conditions to excite and measure a wide range of elements. The peak intensity changes (we do not provide concentrations) are then used to help recognize and define major chemo-stratigraphic units without the need for destructive sampling.
IODP Expedition 383 Portable X-ray fluorescence (p-XRF)
Energy-Dispersive X-Ray Fluorescence (ED-XRF) is a rapid, non-destructive technique for determining qualitative and quantitative changes in chemical composition. Aboard the JOIDES Resolution, pXRF is used for measuring points on section halves, rock pieces, and sometimes powders. Spots are typically irradiated at multiple conditions to excite and measure a wide range of elements. The peak intensity changes (we do not provide concentrations) are then used to help recognize and define major chemo-stratigraphic units without the need for destructive sampling.
IODP Expedition 378 Portable X-ray fluorescence (p-XRF)
Energy-Dispersive X-Ray Fluorescence (ED-XRF) is a rapid, non-destructive technique for determining qualitative and quantitative changes in chemical composition. Aboard the JOIDES Resolution, pXRF is used for measuring points on section halves, rock pieces, and sometimes powders. Spots are typically irradiated at multiple conditions to excite and measure a wide range of elements. The peak intensity changes (we do not provide concentrations) are then used to help recognize and define major chemo-stratigraphic units without the need for destructive sampling.
Characterization of SRF (XRF portable analyser) prepared for an aluminium scrap pre-heating system (REVaMP project)
<p>Open access to experimental data generated by the REVaMP project (GA 869882, Horizon 2020, European Union) along the research of the combustion of a SRF, prepared from ASR, to be used as alternative fuel in a scrap pre-heater at an aluminium refinery plant. Research pertaining to WP1, Deliverable D1. <br> Underlying data for the publication Acha, E. et al. Combustion of a Solid Recovered Fuel (SRF) Produced from the Polymeric Fraction of Automotive Shredder Residue (ASR). Polymers 2021, 13, 3807. https://doi.org/10.3390/polym13213807. Data related to Figure 1 in the article.</p> <p>Subject: Representative samples of SRF were manually sorted into categories of plastics, wood, textile, foam and others, and directly analyzed by the Thermo Fisher Scientific portable analyser Niton™, X-Ray Fluorescence (XRF).</p>
IODP Expedition 379 Portable X-ray fluorescence (p-XRF)
Energy-Dispersive X-Ray Fluorescence (ED-XRF) is a rapid, non-destructive technique for determining qualitative and quantitative changes in chemical composition. Aboard the JOIDES Resolution, pXRF is used for measuring points on section halves, rock pieces, and sometimes powders. Spots are typically irradiated at multiple conditions to excite and measure a wide range of elements. The peak intensity changes (we do not provide concentrations) are then used to help recognize and define major chemo-stratigraphic units without the need for destructive sampling.
IODP Expedition 371 Portable X-ray fluorescence (p-XRF)
Energy-Dispersive X-Ray Fluorescence (ED-XRF) is a rapid, non-destructive technique for determining qualitative and quantitative changes in chemical composition. Aboard the JOIDES Resolution, pXRF is used for measuring points on section halves, rock pieces, and sometimes powders. Spots are typically irradiated at multiple conditions to excite and measure a wide range of elements. The peak intensity changes (we do not provide concentrations) are then used to help recognize and define major chemo-stratigraphic units without the need for destructive sampling.
IODP Expedition 397 Portable X-ray fluorescence (p-XRF)
Energy-Dispersive X-Ray Fluorescence (ED-XRF) is a rapid, non-destructive technique for determining qualitative and quantitative changes in chemical composition. Aboard the JOIDES Resolution, pXRF is used for measuring points on section halves, rock pieces, and sometimes powders. Spots are typically irradiated at multiple conditions to excite and measure a wide range of elements. The peak intensity changes (we do not provide concentrations) are then used to help recognize and define major chemo-stratigraphic units without the need for destructive sampling.
Portable-XRF data of coastal sand for the Ria de Vigo (Spain): March/September 2023
<p>Document compiling the X-Ray Fluorescence results, done on a Bruker S1 Titan X-Ray Fluorescence Analyser, of samples collected in the Ria de Vigo, in March and September 2023, on GEOexploration mode, with a 90-second beam. The multi-element average values of the tree analyses were calculated.</p>
Mind the leaf anatomy while taking ground truth with portable chlorophyll meters.
<p>Measurements of four chlorophyll meters — three transmittance-based (SPAD-502, Dualex-4 Scientific, and MultispeQ 2.0) and one fluorescence-based (CCM-300), were calibrated against biochemically assessed chlorophyll content (Chl) on three distinctive common leaf types differing in leaf anatomy: laminar (i.e., broadleaved woody species with different anthocyanin content verified by biochemical assay) dorsiventral leaves, narrow grass leaves, and conifer needles. Reflectance in the 400-2500 nm range was measured on the laminar leaf samples using a contact probe.</p> <p><strong>Methods</strong></p> <p>In the present study we investigated three distinctive leaf anatomical types: laminar (i.e., deciduous woody species) leaves, grass leaves, and needles. The three groups are defined as follows: 1) laminar leaves of woody angiosperms dorsiventrally flattened (i.e., bifacial) leaves with differentiated mesophyll to palisade and spongy parenchyma and reticulate anastomosing vasculature (Laminar leaves). <span>We further distinguished three anatomical subtypes of laminar leaves 1a) mesomorphic leaves of deciduous tree species, 1b) scleromorphic leaves of evergreen trees and shrubs, and 1c) scleromorphic leaves with pronounced hypodermis represented by <em>Ficus</em> species</span> 2) The second group included C3 grasses with bifacial strap-like leaves with undifferentiated mesophyll with longitudinally arranged vasculature (Grass leaves), and 3) gymnosperm equilateral needle-like leaves without differentiated mesophyll and vascular bundle in the central cylinder (Needles) represented only by Norway spruce (<em>Picea abies</em>) though with irradiance induced differentiation into sun and shaded ecotypes.</p> <p><strong><em>Collection of leaf samples</em></strong></p> <p>Leaves were collected at four different locations in the Czech Republic during the growing seasons 2019, 2020, and 2021. The dates (as DOY - day of the year are indicated in particular datasets). Woody plants with laminar bifacial leaves with differentiated mesophyll were collected in the Botanical Garden of Charles University in Prague (50.072N, 14.424E). Plants were selected to correspond to one of the following leaf subtypes: 1) mesomorphic leaves of deciduous species, 2) scleromorphic leaves of evergreen trees and shrubs and 3) scleromorphic leaves with pronounced hypodermis represented by indoor grown <em>Ficus</em> species. Usually, shaded leaves were sampled from the ground.</p> <p>For independent verification of the relationship of Chl content to chlorophyll meter reading, leaves were sampled in the floodplain forest at the confluence of the rivers Morava and Dyje, near the town of Lanžhot (48.682N, 16.946E) using deciduous woody plants with laminar bifacial leaves and differentiated mesophyll. Sunlit and shaded branches were cut by a tree climber from mature trees of <em>Acer campestre </em>L., <em>Carpinus betulus </em>L., <em>Fraxinus angustifolia </em>Vahl., <em>Populus alba </em>L., <em>Quercus cerris </em>L., <em>Quercus robur </em>L. and <em>Tilia cordata </em>Mill. </p> <p>Grass leaves were represented by four coexisting wild species from <em>Poaceae</em> family (<em>Calamagrostis villosa </em>(Chaix) J.F.Gmel., <em>Deschampsia cespitosa </em>(<a title="Carl Linnaeus" href="https://en.wikipedia.org/wiki/Carl_Linnaeus">L.</a>) <a title="Ambroise Marie François Joseph Palisot de Beauvois" href="https://en.wikipedia.org/wiki/Ambroise_Marie_Fran%C3%A7ois_Joseph_Palisot_de_Beauvois">P.Beauv.</a>, <em>Molinia caerulea </em>(<a title="Carl Linnaeus" href="https://en.wikipedia.org/wiki/Carl_Linnaeus">L.</a>) <a title="Conrad Moench" href="https://en.wikipedia.org/wiki/Conrad_Moench">Moench</a> and <em>Nardus stricta </em>L.) and were collected in relict alpine-arctic grass tundra in the Krkonoše (Giant Mountains) (50.734N, 15.696E). For each species, six plots with homogeneous canopy cover of the species were sampled. </p> <p>Needle leaves were represented by mature trees of Norway spruce (<em>Picea abies </em>(<a title="Carl Linnaeus" href="https://en.wikipedia.org/wiki/Carl_Linnaeus">L.</a>) <a title="Gustav Karl Wilhelm Hermann Karsten" href="https://en.wikipedia.org/wiki/Gustav_Karl_Wilhelm_Hermann_Karsten">H. Karst.</a>) collected at the experimental station Bílý Kříž, Beskydy Mountains, Czech Republic (49.503N, 18.539E). Sunlit and shaded branches were cut by a tree climber, and samples were taken from the current year's needles, the previous year's needles, and four-year-old needles. </p> <p><strong><em>Leaf sampling</em></strong></p> <p>Laminar leaves: leaves were measured immediately after being detached from the branch or stored in a refrigerator for no more than 30 minutes before processing. First, the reflectance of the leaves was measured using a spectroradiometer and a contact probe. Second, readings from all portable chlorophyll meters were recorded. Third, one disk (area = 68 mm<sup>2</sup>) was cut from each leaf for Chl and anthocyanin extraction. Finally, a square segment of the leaf was cut out and immersed in fixative solution for anatomical analysis. A second leaf of similar size, colour, position in the canopy, and developmental stage was removed from the branch, weighed, scanned, and later dried and weighed again. This "twin" was used to assess leaf mass per area (LMA), equivalent water thickness (EWT).</p> <p>Grass leaves: chlorophyll meter readings were taken on grass leaves attached to the plant using a chlorophyll meter (CCM<sub>CFR</sub>,) then leaves were collected immediately in the field for Chl extraction. A 2 cm long leaf segment was cut, flattened under a microscope glass, photographed for area assessment, and stored in plastic vials in a refrigerator before freezing. A subsample was weighed fresh, scanned, and dried for calculation of LMA and EWT.</p> <p>Needles: Shoots were separated from the branch, sorted by age, and stored in a refrigerator for no longer than 24 hours before processing. First, CCM<sub>CFR</sub> were taken from the middle part of three needles and the same needles were used for Chl extraction. A second parallel set of needles was immersed in fixative solution for anatomical analysis. The third set of needles was weighed fresh, scanned, and dried for calculation of LMA and EWT.</p> <p><strong><em>Optical assessment of Chl content using portable chlorophyll meters</em></strong></p> <p>Three transmittance-based chlorophyll meters: SPAD-502 SPAD), Dualex-4 Scientific (Dx) and MultispeQ (MSPQ), and one fluorescence chlorophyll meter: CCM-300 (CCM), were used for optical assessment of Chl content in leaves. For laminar leaves, three readings were taken on each leaf with each instrument from the adaxial leaf side. Measurements were taken in the central part of the leaf, avoiding the midrib and main veins. The three measurements were averaged, and the average was used as a representative value for the leaf. Measurements with all four chlorophyll meters (SPAD<sub>values</sub>, Dx<sub>values</sub>, MSPQ<sub>values</sub>, CCM<sub>CFR</sub>) were obtained for laminar leaves. For grass leaves, Chl values were measured at a single location in the apical third of the leaf blade. All four grass species were measured by CCM (CCM<sub>CFR</sub>), and three species with a wide enough lamina to cover the SPAD measurement area (<em>Calamagrostis villosa</em>, <em>Deschampsia cespitosa</em>, and <em>Molinia careulea</em>) were also measured by SPAD and SPAD<sub>values</sub> detected. For the spruce needles, three needles were measured only once with the CCM, always taking a reading in the central part of the needle. The average of these three needle measurements was used to relate to Chl.</p> <p><strong><em>Reflectance measurements and spectral processing</em></strong></p> <p>Reflectance was measured for laminar leaves collected in Botanical Garden of Charles University in Prague and deciduous trees from floodplain forest. Leaf reflectance from the adaxial side of the leaves was measured with an ASD FieldSpec 4 Wide-Res spectroradiometer with attached contact probe (ASD Inc., Boulder, CO, USA). Three measurements per leaf were always taken, when leaf size allowed. Measurements were placed at the same locations where chlorophyll meter readings were taken. Leaf reflectance spectra ranging from 350 to 2500 nm were normalized against a white reference spectrum (99% Spectralon white panel) to obtain relative reflectance spectra. The median of the spectral curve from three measurements was used as a representative value for the leaf. </p>
Used portable batteries with bounding boxes
<p>This dataset contains images and labels of used portable batteries. Battery types are:</p> <ol> <li>Lithium-ion (LIION, class 0) </li> <li>Lithium polymer (LIPO, class 1) </li> <li>Lead-acid (PB, class 2)</li> <li>Nickel-cadmium (NICD, class 3)</li> <li>Nickel-metal hydride (NIMH, class 4)</li> </ol> <p>Each image contains multiple batteries of the same type. The file name defines the type (e.g. LIPO_IMG_4920.JPG is an image with multiple lithium polymer batteries). Each image file is accompanied by a label file (*.txt) with identical name except the file name extension. Each row in the label file contains a class label (0 to 4) followed by bounding box coordinates in YOLO format.</p> <p>This dataset was produced in Horizon 2020 funded project <a href="https://trinityrobotics.eu">TRINITY</a>.</p>
IODP Expedition 352 Portable X-ray fluorescence (p-XRF)
<p>Energy-Dispersive X-Ray Fluorescence (ED-XRF) is a rapid, non-destructive technique for determining qualitative and quantitative changes in chemical composition. Aboard the JOIDES Resolution, pXRF is used for measuring points on section halves, rock pieces, and sometimes powders. Spots are typically irradiated at multiple conditions to excite and measure a wide range of elements. The peak intensity changes (we do not provide concentrations) are then used to help recognize and define major chemo-stratigraphic units without the need for destructive sampling.</p>
Portable Freeware Dataset
<pre>Portable Freeware Dataset ========================== This dataset was build with the portable freeware [1] website in order to build a cleanware dataset. 1150 Windows executable are available in this database. A Kyoto Tycoon[0] database is used to store : - /app : the current script used to build it - /log : logs produced during the extraction time - /index : an index "sha256 url" of binaries - /<sha256> : a binary with <sha256> hash An example of index: 71b11a14e48e6a1a3263d131d92a888f8e10e8970702866339eb02ed5adf850c https://www.portablefreeware.com/download.php?dd=599 8cb9651c43b4a46430505fb722de46b2dc33863a0829af4a64a431f5a51db8f3 https://www.portablefreeware.com/download.php?dd64=599 e3338a73b5a781af590264dac431078ce657ba033a11b28d86a107009c7ab686 https://www.portablefreeware.com/download.php?dd=835 888c501b6442987e5bf6681096ce2e392f3d1b2bd550507252a6cbef2be09223 https://www.portablefreeware.com/download.php?dd=2634 656359e9f9105628a79cd3048cb1ed8ea6a25ba38b26ba89817710130e3bc231 https://www.portablefreeware.com/download.php?dd=2634 888c501b6442987e5bf6681096ce2e392f3d1b2bd550507252a6cbef2be09223 https://www.portablefreeware.com/download.php?dd64=2634 0. https://fallabs.com/kyototycoon/ 1. https://www.portablefreeware.com/ </pre>
Fig. 1. Portable chamber. Bottoms A and B in A portable chamber for experimental observations of Bactericera cockerelli on plant seedlings and leaves
Fig. 1. Portable chamber. Bottoms A and B of chamber, with holes (a) and (b); cryovial cap (C) positioned in hole b; cap C with perforation (c); cryovial tube (D). Two chambers complete with plants, with water (E) or substrate (F) and modeling clay (yellow arrows) sealing the plant in tube. Adults (G) and eggs (H, I) (black and white arrows, respectively) of Bactericera cockerelli, and tomato leaflet inside chamber.
Fig. 3 in Scientific note A portable bio-amplifier for electric fish research: design and construction
Fig. 3. Dipole electrodes designed for field (a) and laboratory (b, c) use. For each, positive pole (silver ring) is marked +, with ground pole in middle and negative pole at opposite end. The ground pole from b is magnified in c. Note more robust cable in the field electrode.
Fig. 2 in Scientific note A portable bio-amplifier for electric fish research: design and construction
Fig. 2. External (a) and internal (b) views of the bio-amplifier. a: 1, dipole input; 2, power switch; 3, power LED; 4, BNC output to oscilloscope/digitizer; 5, earphone jack; 6, fine gain control; 7, covered ground stub; 8, coarse gain switch; 9, dipole reversal switch; 10, earphone volume control. b: 1, battery bay (rechargeable batteries removed); 2, battery terminals; 3, circuit board; 4, operational amplifier; 5, resistor; 6, trimmer potentiometer; 7, mount to bracket; 8, electrolytic capacitor; 9, ceramic disk capacitor; 10, 4pF ceramic disk capacitor across R20 as optional high-frequency attenuator.
Fig. 1. Circuit plan for bio-amplifier. For stages A - H in Scientific note A portable bio-amplifier for electric fish research: design and construction
Fig. 1. Circuit plan for bio-amplifier. For stages A - H refer to text. Boxes with dashed lines refer to components external to circuit board. Symbols follow universal engineering protocol.
Portable two-filter dual-flow-loop 222Rn detector: stand-alone monitor and calibration transfer device
<p>Little overlap exists in the required capabilities of <sup>222</sup>Rn (radon) monitors for public health and atmospheric research. The former requires robust, compact, easily transportable instruments to characterise daily to yearly variability >100 Bq m<sup>−3</sup>, whereas the latter requires static instruments capable of characterising sub-hourly variability between 0.1 and 100 Bq m<sup>−3</sup>. Consequently, detector development has evolved independently for the two research communities, and while many radon measurements are being made world-wide, the full potential of this measurement network can't be realised because not all results are comparable. Development of a monitor that satisfies the primary needs of both measurement communities, including a calibration traceable to the International System of Units (SI), would constitute an important step toward (i) increasing the availability of radon measurements to both research communities, and (ii) providing a means to harmonize and compare radon measurements across the existing eclectic global network of radon detectors. To this end, we describe a prototype detector built by the Australian Nuclear Science and Technology Organisation (ANSTO), in collaboration with the EMPIR 19ENV01 <em>traceRadon</em> Project and Physikalisch-Technische Bundesanstalt (PTB). This two-filter dual-flow-loop radon monitor can be transported in a standard vehicle, fits in a 19<sup>′′</sup> instrument rack, has a 30 min temporal resolution, and a detection limit of ∼0.14 Bq m<sup>−3</sup>. It is capable of continuous, long-term, low-maintenance, low-power, indoor or outdoor monitoring with a high sensitivity and an uncertainty of ∼15 % at 1 Bq m<sup>−3</sup>. Furthermore, we demonstrate the successful transfer of an SI traceable calibration from this portable monitor to a 1500 L two-filter radon monitor under field conditions.</p>
IODP Expedition 396 Portable X-ray fluorescence (p-XRF)
<p>Energy-Dispersive X-Ray Fluorescence (ED-XRF) is a rapid, non-destructive technique for determining qualitative and quantitative changes in chemical composition. Aboard the JOIDES Resolution, pXRF is used for measuring points on section halves, rock pieces, and sometimes powders. Spots are typically irradiated at multiple conditions to excite and measure a wide range of elements. The peak intensity changes (we do not provide concentrations) are then used to help recognize and define major chemo-stratigraphic units without the need for destructive sampling.</p>
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These curated guides explain access requirements, typical timelines, costs, and reuse considerations for widely used research datasets.
Allen Brain Atlas
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International Brain Laboratory public data
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OpenNeuro
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