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1,246 results for “vessels”
Data from: Angiosperm wood structure: global patterns in vessel anatomy and their relationship to wood density and potential conductivity
Woody stems comprise a large biological carbon fraction and determine water transport between roots and leaves; their structure and function can influence both carbon and hydrological cycles. While angiosperm wood anatomy and density determine hydraulic conductivity and mechanical strength, little is known about interrelations across many species. We compiled a global dataset comprising two anatomical traits for 3005 woody angiosperms: mean vessel lumen area ( ) and number per unit area (N). From these, we calculated vessel lumen fraction (F = N) and size/number ratio (S = /N), a new vessel composition index. We examined extent to which F and S influenced potential sapwood specific stem conductivity (KS) and wood density (D; dry mass/fresh volume). F and S varied essentially independently across angiosperms. Variation in KS was driven primarily by S, and variation in D was virtually unrelated to F and S. Tissue density outside vessel lumens (DN) must predominantly influence D. High S should confer faster Ks but incur greater freeze-thaw embolism risk. F should also affect KS, and both F and DN should influence mechanical strength, capacitance, and construction costs. Improved theory and quantification are needed to better understand ecological costs and benefits of these three distinct dimensions.
Replica Hopewell Ceramic Vessel
Replica Hopewell Ceramic Vessel (no Catalog #), a part of the Michigan State University Museum's Archaeology Teaching Collection. Cast by Arthur Graves, this pot is a recreation of a Hopewell pot found in Feature 75 at the Bussinger Site (20SA194) in Michigan. In the past, ceramic pots were used for a number of tasks, including cooking, soaking materials, storage, serving food, ceremonial practices, and others. Dimensions: approximately 7cm L x 7cm W x 8cm H, weight= 84g This 3D model was created by Jeff Painter using an Artec Space Spider and Artec Studio 14 Professional, in partnership with the MSU Digital Heritage Imaging and Innovation (DHI) Lab. Source: Objaverse 1.0 / Sketchfab
Lekythos Vessel Unrolled
Location: Museo Archeologico di Aidone, Aidone, Sicily, Italy Catalogue Number: 69-585 Description: Restored Lekythos vessel with freeze of Heracles Data Capture Method: Photogrammetry Processing Software: Reality Capture Citation: The data for this project were originally collected as a joint effort between the University of Catania and CVAST at the University of South Florida (USF), with the collaboration of the Fondazione Bruno Kessler (FBK). Dr. Mariarita Sgarlata and Dr. Herbert Maschner, Principal Investigators. We gratefully acknowledge the participation of the administrators of the Villa Romana del Casale and the Museo Archeologico di Aidone. The data have been transferred to Global Digital Heritage (GDH) for processing and analysis. Funding for this project, both at USF and at GDH, has been provided by the Hitz Foundation, Herbert Maschner, Principal Investigator. Source: Objaverse 1.0 / Sketchfab
Stone vessel 3rd C BCE-1st C CE. Mleiha, Sharjah
Calcite Beehive vessel 3rd century BCE - 1st century CE. Mleiha area 7. 546 photos. Completely processed (aligned, scaled, modeled, cleaned, simplified, unwrapped, textured, meshed) in Reality Capture. CAT. n° 12. in B. Overlaet 2018. *Mleiha, An Arab Kingdom on the Caravan Trails* (Brussels 30.10-30.12.2018). Sharjah: Sharjah Archaeology Authority. Source: Objaverse 1.0 / Sketchfab
Vessel Lid With A Scarab
E.GA 1494.1947 Source: Objaverse 1.0 / Sketchfab
Grass veins are leaky pipes: Vessel widening in grass leaves explain variation in stomatal conductance and vessel diameter among species
<p>The widening of xylem vessels from tip-to-base of trees is an adaptation to minimize the hydraulic resistance of a long pathway. Given that parallel veins of monocot leaves do not branch hierarchically, vessels should also widen basipetally but, in addition to minimizing resistance, should also account for water volume lost to transpiration since they supply water to the lamina along their lengths, i.e. "leakiness".</p> <p>We measured photosynthesis, stomatal conductance, and vessel diameter at 5 locations along each leaf of 5 perennial grass species.</p> <p>We found that the rate of conduit widening in grass leaves was larger than the widening exponent required to minimize pathlength resistance (0.35 vs. ~0.22). Furthermore, variation in the widening exponent among species was positively correlated with maximal stomatal conductance (r<sup>2 </sup>= 0.20) and net CO<sub>2</sub> assimilation (r<sup>2</sup> = 0.45).</p> <p>These results suggest that faster rates of conduit widening (>0.22) were associated with higher rates of water loss. Taken together, our results show that the widening exponent is linked to plant function in grass leaves and that natural selection has favored parallel vein networks that are constructed to meet transpiration requirements while minimizing hydraulic resistance within grass blades.</p>
High-res 11th C BCE fangding (food vessel)
A high-resolution version of the 11th C BCE fangding (food vessel), now in the collection of the Minneapolis Institute of Art. *'This fangding, or "squared ding," shows an interesting development in ding design. Although it is still a raised boxlike vessel on four columnar legs, the decoration shows a tendency toward the abstract, which may have been influenced by contemporary textile design. The principal surface displays a rectangular field of interlocked Ts on a ground of squared spirals framed on three sides by rows of spikes. Long-tailed birds flank the short flanges forming the central ridge of a rudimentary taotie mask. Notably, all the linear patterns on this small vessel have been filled with a black carbon-based substance, to give added emphasis to the graphic designs. Though not widespread, this technique can be found in other late Shang and early Western Zhou bronzes.'* More information about the object [here](https://collections.artsmia.org/index.php?page=detail&id=1143) Source: Objaverse 1.0 / Sketchfab
Glass Vessel, Dibba Al Hisn, Sharjah, 1st C. CE
Opaque Glass Vessel, Dibba Al Hisn, Sharjah, 1st C. CE Glass was an important export product of the Mediterranean Roman world from the middle of the first century BC onwards. Large quantities reached the Oman peninsula. This specimen was discovered in a communal tomb at Dibba al-Hisn (Sharjah Emirate) on the East coast of the Oman peninsula, together with glass unguentaria, Indian ivory combs, a Roman intaglio-- luxury products that illustrate the importance of Dibba as a trading port (Jasim 2006). Sabah A. Jasim. 2006. Trade centres and commercial routes in the Arabian Gulf: Post-Hellenistic discoveries at Dibba, Sharjah, United Arab Emirates. *Arabian Archaeology and Epigraphy* 2006: 17: 214–237. Source: Objaverse 1.0 / Sketchfab
Pre-Islamic Alabaster Vessel, Mleiha, Sharjah
Pre-Islamic Alabaster Vessel, Mleiha, Sharjah, UAE. On display in the Mleiha Archaeological Center. 1st Century BCE- 3rd Century CE. Catalog number unk. Processed in Reality Capture from 593 images. Source: Objaverse 1.0 / Sketchfab
Bird & Fish Vessel, Jebel al-Buhais, Sharjah
Soft stone vessel with engraved decoration of birds and fish from a tomb at Jebel al-Buhais, Sharjah, UAE (tomb BHS 31). Bronze Age, Wadi suq Period. 2000-1300 BCE. Reference: S.A. Jasim (2012). The Necropolis of Jebel al-Buhais – Prehistoric Discoveries in the Emirate of Sharjah, United Arab Emirates. Sharjah: Department of Culture & Information, p. 104-105, Fig. 130-131 Source: Objaverse 1.0 / Sketchfab
Fragment of a clay vessel №144
Russia, Republic of Bashkortostan, Baymak district. Excavations in 2001. Settlement Laimberdy-1. Fragment. Reconstruction. The Bronze Age. Chronology: end of the XVII - XVI century BC. Alakul culture. Source: Objaverse 1.0 / Sketchfab
Replica Hopewell Ceramic Vessel
Replica Hopewell Ceramic Vessel (Catalog # 2002:226.232), a part of the Michigan State University Museum's Archaeology Teaching Collection. Created by Toby Morrow, this pot is made out of clay and shell temper that has been fired. It is decorated with trailed and stamped designs, which were common on Hopewell pots during the Middle Woodland period of the Eastern Woodlands (U.S.A.). In the past, ceramic pots were used for a number of tasks, including cooking, soaking materials, storage, serving food, ceremonial practices, and others. Dimensions: approximately 12cm L x 11cm W x 10cm H, weight= 382.9g This 3D model was created by Jeff Painter using an Artec Space Spider and Artec Studio 14 Professional, in partnership with the MSU Digital Heritage Imaging and Innovation (DHI) Lab. Source: Objaverse 1.0 / Sketchfab
Richard's Island (8LV137) Surface Collection Vessel Inventory
<p><strong><span>Table 1. </span></strong><span>This table (click her to open repository) overviews the vessel inventory for 66 vessel lots and residual sherds from the Richard’s Island Site. All sherds were gathered and donated to the Lab of Southeastern Archaeology at the University of Florida by amateur collector, Si Campbell. Cameron Connolly curated vessel lots for the assemblage. Each vessel lot includes the following information about vessel attributes:<strong> </strong>how many sherds are included in the vessel lot, the weight of the vessel lot in grams, the cultural historical period the lot represents, which part or parts of the vessel are represented (e.g., rim, body, base), the surface treatment of sherds, and the paste category. Whenever possible, orifice diameter (cm), rim thickness (mm), and lip/rim form was recorded for rim sherds within vessel lots.</span></p>
Figure data and scripts for "Vacuum vessel design with lofted toroidal surfaces for a QHS configuration"
Open the record for dataset details and reuse information.
Supplementary material from: Microfluidic vessel-on-chip platform for investigation of cellular defects in venous malformations and responses to various shear stress and flow conditions
Open the record for dataset details and reuse information.
Original CT image stacks of five fossil petrosal bones from Siberia, 3D PDF files of reconstructed endocasts, blood vessels and innervation patterns, 3D PDF instruction file, STL files of the petrosals
<p>Five partially preserved mammaliaform petrosals recovered from Middle Jurassic sediments of the Berezovsk coal mine (Krasnoyarsk Krai, Russia) show similarities to other early mammaliaforms like the morganucodontan <i>Morganucodon</i> and the docodontan <i>Haldanodon</i> in having an inflated promontorium, and a curved and apically inflated cochlear canal. But they are distinct from dryolestoid and derived mammalian petrosals by the weak coiling of the cochlear duct and the presence of a perilymphatic foramen with an open perilymphatic sulcus. The two larger and robust specimens exhibit striking similarities to docodontan petrosals. Inside the bone an intricate circumpromontorial venous plexus was discovered as recently described for the docodontan <i>Borealestes</i>, confirming this structure is consistently present in basal mammaliaforms. The three smaller and slender petrosals likely belong to haramiyidans and are unique in showing a septum-like structure medially along the cochlear nerve entrance. The protruding perforated bony bar that is preserved in two of the three is interpreted here to be a remnant of a bony septum with multiple foramina for cochlear nerve fibers, representing an autapomorphic feature of Haramiyida. This newly described passageway for nerve fibers shows that the formation of the osteological structure surrounding the nervous pathways of the cochlea is more plastic among the most basal mammaliaforms than previously thought.</p>
Materials in Vessels Dataset, Annotated images of materials in transparent vessels for semantic segmentation
<p> Data set of materials in vessels<br> The handling of materials in glassware vessels is the main task in chemistry laboratory research as well as a large number of other activities. Visual recognition of the physical phase of the<br> materials is essential for many methods ranging from a simple task such as fill-level evaluation to the<br> identification of more complex properties such as solvation, precipitation, crystallization and phase<br> separation. To help train neural nets for this task, a new data set was created. The data set contains a<br> thousand images of materials, in different phases and involved in different chemical processes, in a<br> laboratory setting. Each pixel in each image is labeled according to several layers of classification, as<br> given below:</p> <p>a. Vessel/Background: For each pixel assign value of one if it is part of the vessel and zero otherwise.<br> This annotation was used as the ROI map for the valve filter method.</p> <p>b. Filled/Empty: This is similar to the above, but also distinguishes between the filled and empty<br> regions of the vessel. For each pixel, one of the following three values is assigned:0 (background); 1<br> (empty vessel); or 2 (filled vessel).</p> <p>c. Phase type: This is similar to the above but distinguishes between liquid and solid regions of the<br> filled vessel. For each pixel, one of the following four values: 0 (background); 1 (empty vessel); 2<br> (liquid); or 3 (solid).</p> <p>d. Fine-grained physical phase type: This is similar to the above but distinguishes between specific<br> classes of physical phase. For each pixel, one of 15 values is assigned: 1 (background); 2 (empty<br> vessel); 3 (liquid); 4 (liquid phase two, in the case where more than one phase of the liquid appears in<br> the vessel); 5 (suspension); 6 (emulsion); 7 (foam); 8 (solid); 9 (gel); 10 (powder); 11 (granular); 12<br> (bulk); 13 (solid-liquid mixture); 14 (solid phase two, in the case where more than one phase of solid<br> exists in the vessel): and 15 (vapor).<br> The annotations are given as images of the size of the original image, where the pixel value is the<br> class number. The annotation of the vessel region (a) is used in the ROI input for the valve filter net .</p> <p>4.1. Validation/testing set<br> The data set is divided into training and testing sets. The testing set is itself divided into two subsets;<br> one contains images extracted from the same YouTube channels as the training set, and therefore was<br> taken under similar conditions as the training images. The second subset contains images extracted<br> from YouTube channels not included in the training set, and hence contains images taken under<br> different conditions from those used to train the net.</p> <p>4.2. Creating the data set<br> The creation of a large number of images with a variety of chemical processes and settings could have<br> been a daunting task. Luckily, several YouTube channels dedicated to chemical experiments exist<br> which offer high-quality footage of chemistry experiments. Thanks to these channels, including<br> NurdRage, NileRed, ChemPlayer, it was possible to collect a large number of high-quality images in a<br> short time. Pixel-wise annotation of these images was another challenging task, and was performed by<br> Alexandra Emanuel and Mor Bismuth.</p> <p>For more details see: <a href="https://arxiv.org/pdf/1708.08711.pdf">Setting attention region for convolutional neural networks using region selective features, for recognition of materials within glass vessels</a></p> <p>This dataset was first published in 2017.8</p> <p>For newer and Bigger datasets see</p> <p>https://zenodo.org/record/4736111#.YbG-RrtyZH4</p> <p>https://zenodo.org/record/3697452#.YbG-TLtyZH4</p> <p> </p>
The mysterious oil spill in the northeastern coast of Brazil: tracking offshore seawater and the need for improved vessel facilities
<p>PAHs and aliphatics data obtained in seawater from NE Brazil</p>
◂Fig. 8 Light microscope images of living specimens of Ramisyllis kingghidorahi n. sp. A Branching point. B, E–G Posterior ends showing pygidia. C, D, H, I Midbody segments in regions of long dorsal cirri. Arrows point to the ventral blood vessel in H and the digestive tract in I.A, D, E, and I in dorsal view. B, C, F and H in ventral view. G In lateral view. Scale bars: 500 µm A, E, 200 µm B, C, D, 100 µm F, H, I, and 50 µm G in Ramisyllis kingghidorahi n. sp., a new branching annelid from Japan
◂Fig. 8 Light microscope images of living specimens of Ramisyllis kingghidorahi n. sp. A Branching point. B, E–G Posterior ends showing pygidia. C, D, H, I Midbody segments in regions of long dorsal cirri. Arrows point to the ventral blood vessel in H and the digestive tract in I.A, D, E, and I in dorsal view. B, C, F and H in ventral view. G In lateral view. Scale bars: 500 µm A, E, 200 µm B, C, D, 100 µm F, H, I, and 50 µm G
Supplemental material for: Clinical and neuroimaging outcomes of direct endovascular thrombectomy vs. bridging therapy in large vessel occlusion patients: a secondary analysis of SELECT cohort study
<p><b>Objective:</b> To evaluate the comparative safety and efficacy of direct endovascular thrombectomy(dEVT) compared to bridging therapy(BT:IV-tPA+EVT) and assess if BT potential benefit relates to stroke severity, size and initial presentation to EVT vs. non-EVT center.</p> <p><b>Methods:</b> In a prospective multicenter cohort-study of imaging selection for endovascular thrombectomy[SELECT], anterior-circulation large vessel occlusion (LVO) patients presenting to EVT-capable centers within 4.5hours from last-known-well were stratified into BT vs. dEVT.<b><i> </i></b>The primary outcome was 90-day functional independence[modified Rankin Scale(mRS)=0-2]. Secondary outcomes included a shift across 90-day mRS grades, mortality, symptomatic intracranial hemorrhage. We also performed subgroup-analyses according to initial presentation to EVT-capable center (direct versus transfer), stroke severity and baseline infarct core volume.</p> <p><b>Results:</b> We identified 226 LVOs (54%:men, mean age:65.6±14.6years, median NIHSS-score: 17, 28% received dEVT). Median time from arrival to groin-puncture did not differ in BT-patients when presenting directly[dEVT:1.43 (IQR=1.13-1.90) hours vs. BT:1.58(IQR=1.27-2.02)hours,p=0.40] or transferred to EVT-capable centers[dEVT:1.17 (IQR: 0.90-1.48) hours vs. BT:1.27 (IQR: 0.97-1.87) hours,p=0.24]. BT was associated with higher odds of 90-day functional independence (57% vs. 44%,aOR=2.02,95%CI:1.01-4.03,p=0.046) and functional improvement (adjusted cOR=2.06,95%CI:1.18-3.60,p=0.011), and lower likelihood of 90-day mortality (11% vs. 23%,aOR: 0.20,95%CI:0.07-0.58,p=0.003). No differences in any other outcomes were detected. In subgroup-analyses, BT patients with baseline NIHSS-scores<15 had higher functional independence likelihood compared to dEVT (aOR=4.87,95%CI:1.56-15.18,p=0.006); this association was not evident for patients with NIHSS-scores≥15 (aOR=1.05,95%CI:0.40-2.74,p=0.92). Similarly, functional outcomes improvements with BT were detected in patients with core volume strata (Ischemic core <50cc: aOR: 2.10, 95% CI:1.02-4.33, p=0.044 vs ischemic core ≥50cc: aOR: 0.41,95% CI:0.01-16.02,p=0.64) and transfer status (transferred: aOR: 2.21,95% CI:0.93-9.65,p=0.29 vs direct to EVT center: aOR:1.84,95%CI:0.80-4.23,p=0.15). </p> <p><b>Conclusions:</b> Bridging therapy appears to be associated with better clinical outcomes, especially with milder NIHSS-scores, smaller presentation core volumes and those who were "dripped and shipped".</p> <p><b>Classification of Evidence: </b>This study provides Class III evidence that for patients with ischemic stroke from anterior-circulation LVO within 4.5 hours from last-known-well, bridging therapy compared to direct endovascular thrombectomy leads to better 90-day functional outcomes.</p>
ScienceDex guides
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These curated guides explain access requirements, typical timelines, costs, and reuse considerations for widely used research datasets.
Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
Annotated Behaviour and Observability Dataset (ABODe)
ABODe is a University of Edinburgh DataShare dataset for behavior classification in group-housed mice using home-cage video, identities, bounding boxes, ground-plate positions, and annotator labels.
DANDI Archive for NWB datasets
DANDI is a BRAIN Initiative archive for publishing and sharing neurophysiology data, including electrophysiology, optophysiology, and behavioral data packaged as NWB and related standards.
International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.