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571 results for “sheath”
Guerrero Sheathing Tacks (2019)
Four copper or copper-alloy tacks are found in a recess in the bedrock at shipwreck site 2-04-8MO02343, thought to be that of the 1827 pirate slave ship *Guerrero*. Similar tacks have been found on the site in context with copper sheeting. The sheeting was used to sheath the wooden hull as protection against shipworms and fouling, and it was attached with tacks like these. Scale = 5 centimeters. Source: Objaverse 1.0 / Sketchfab
Investigation of two-dimensional radio-frequency sheath properties using a microscale fluid model
<p>In previous work (Kohno H. and Myra J.R. 2023 Comput. Phys. Commun. 291 108841), we developed a numerical scheme based on a two-dimensional microscale radio-frequency (RF) sheath model with periodically curved wall boundaries. Here, we expand the capability of this scheme through modification of the boundary conditions (BCs) on the conducting walls, which allows the ion flow to turn back to the plasma at locations on the walls where the electromagnetic force on the ions is reversed from its usual direction. Numerical simulations are carried out to investigate the dependences of the surface-integrated admittances on the wall bump height, ion magnetization, ion mobility, and the magnetic field angle, and to visualize the sheath structures in several cases. One of the main results is the ion cyclotron admittance resonance observed under the condition of low ion mobility (high normalized frequency). It is shown that the amplitude of the resonance peak depends on the wall bump height and the ion velocity is reversed on the sides of the bump in an RF cycle for the resonance cases. Furthermore, the differences in the admittances between the one- and two-dimensional microscale models are assessed for the purpose of understanding non-locality of the sheath near the wall surface for the parameters considered in this study. This information will be essential for improving the sheath BC for macroscale calculations in the future.</p>
18th Century Sword Replica in Sheath
Most soldados carried espadas (swords). These espadas primarily consisted of straight bladed rapiers which could be used to "cut and thrust." Most of the time only the blades were shipped from Spain and the hilts were made in Mexico City or some other larger establishment. Source: Objaverse 1.0 / Sketchfab
Asset Sword Sheath
Captain gangplanks scimitar and fitting sheath as part of a gangplank inspired shipwreck diorama otherwise found (albeit heavily decimated) on my profile. Any and all models of this diorama can be downloaded for free, and upon request, I can also send you the non decimated / non sculpted versions as well. Source: Objaverse 1.0 / Sketchfab
Metal Knife & Sheath
Metal Knife & Sheath is part of Manchester University's Ethnographic Art Collection. This item was 3D scanned using a Creaform Go Scan 20. Source: Objaverse 1.0 / Sketchfab
Tensile properties of glaucomatous human sclera, optic nerve, and optic nerve sheath
<p><strong><span>Purpose</span></strong><span>. <span>We characterized the tensile behavior of sclera, optic nerve (ON), and ON sheath in eyes from donors with glaucoma, for comparison with published data without glaucoma.</span></span></p> <p><strong><span>Methods</span></strong><span>. <span>Twelve freshly harvested eyes were obtained from donors with history of glaucoma, of average age 86±7 (standard deviation) years. Rectangular samples were taken from anterior, equatorial, posterior, and peripapillary sclera, and ON sheath, while ON was in native form and measured using calipers. Under physiological temperature and humidity, tissues were preconditioned at 5% strain before loading at 0.1 mm/s. Force-displacement data were converted into engineering stress-strain curves fit by </span></span><span>reduced polynomial hyperelastic models</span><span>, and analyzed by tangent moduli at 3% and 7% strain. Data were compared with an age-matched sample of 7 published control eyes.</span></p> <p><strong><span>Results</span></strong><span>. <span>Optic atrophy was supported by significant reduction in ON cross-section to 73% of normal in glaucomatous eyes. Glaucomatous was significantly stiffer than control <span> </span>in equatorial and peripapillary regions (P<0.001). However, glaucomatous ON and sheath were significantly less stiff than control, particularly at low strain (P<0.001). Hyperelastic models were well fit to stress-strain data (R<sup>2</sup>>0.997). Tangent moduli had variability similar to control in most regions, but was abnormally large in peripapillary sclera. Tensile properties were varied independently among various regions of the same eyes. </span></span></p> <p><strong><span>Conclusion</span></strong><span>. <span>Glaucomatous sclera is abnormally stiff, but the ON and sheath are abnormally compliant. These abnormalities correspond to properties predicted by finite element analysis to transfer potentially pathologic stress to the vulnerable disc and lamina cribrosa region during adduction eye movement.</span></span></p>
SARC023: Ganetespib and Sirolimus in Patients With MPNST (Malignant Peripheral Nerve Sheath Tumors)
ClinicalTrials.gov study NCT02008877. IPD Sharing: Not stated. Countries: 1. Publications: 1.
Ultrasound-Guided Rectus Sheath Block in Gynecological Single-Port Laparoscopy
ClinicalTrials.gov study NCT06862947. IPD Sharing: NO. Countries: 1. Publications: 6.
Comparison of 6F and 7F Sheaths for Coronary Intervention Via Distal Radial Artery Access
ClinicalTrials.gov study NCT06585917. IPD Sharing: NO. Countries: 1. Publications: 1.
PLX3397 Plus Sirolimus in Unresectable Sarcoma and Malignant Peripheral Nerve Sheath Tumors
ClinicalTrials.gov study NCT02584647. IPD Sharing: NO. Countries: 1. Publications: 1.
Effect of Cervical Collar on the Optic Nerve Sheath Diameter in Minor Head Trauma
ClinicalTrials.gov study NCT03742427. IPD Sharing: NO. Countries: 1. Publications: 2.
Flexible Ureteroscopy With a Flexible and Navigable Suction Ureteral Access Sheath Versus Mini-Percutaneous Nephrolithotomy for 1-2 cm Lower Pole Kidney Stones
ClinicalTrials.gov study NCT07159035. IPD Sharing: NO. Countries: 1. Publications: 2.
Clonidine in Ultrasound-guided Rectus Sheath Block for Outpatient Umbilical Hernioplasty
ClinicalTrials.gov study NCT07062497. IPD Sharing: YES. Countries: 1. Publications: 4.
Comparison of Surgical Rectus Sheath Block and Intrathecal Morphine
ClinicalTrials.gov study NCT02790099. IPD Sharing: NO. Countries: 1. Publications: 7.
Ropivacaine With Clonidine For Pediatric Rectus Sheath Blocks- The Magic Combination
ClinicalTrials.gov study NCT02439281. IPD Sharing: NO. Countries: 1. Publications: 31.
S0330 Erlotinib in Treating Patients With Unresectable or Metastatic Malignant Peripheral Nerve Sheath Tumor
ClinicalTrials.gov study NCT00068367. IPD Sharing: Not stated. Countries: 1. Publications: 0.
Thoracic Epidural Analgesia Versus Rectus Sheath Block Versus Surgeon Infiltration With Liposomal Bupivacaine or Standard Bupivacaine for Post-Operative Pain Control After Cystectomy
ClinicalTrials.gov study NCT04300231. IPD Sharing: NO. Countries: 1. Publications: 3.
Pain During Femoral Sheath Removal in Patients Undergoing Percutaneous Coronary Intervenion
ClinicalTrials.gov study NCT06445387. IPD Sharing: NO. Countries: 1. Publications: 2.
Data from: Quantifying shape and ecology in avian pedal claws: the relationship between the bony core and keratinous sheath
Open the record for dataset details and reuse information.
Measurement and modeling of the radio frequency sheath impedance in a large magnetized plasma
<p>The accompanying files contain digital data for figures in the article "Measurement and modeling of the radio frequency sheath impedance in a large magnetized plasma" by J. R. Myra, C. Lau, B. Van Compernolle, S. Vincena and J. Wright, submitted to the journal Physics of Plasmas.</p> <p><strong>Abstract</strong><br> The DC and RF properties of radio frequency (RF) driven sheaths were studied in the Large Plasma Device (LAPD) at the University of California, Los Angeles. The experiments diagnosed RF sheaths on field lines connected to a grounded plate at one end and an ion cyclotron range of frequencies (ICRF) antenna at the other end. The experimental setup permitted measurement of the RF sheath impedance at the plate as a function of DC sheath voltage, with the latter controlled by varying the RF current applied to the antenna. The DC current-voltage characteristics of these sheaths and the RF sheath impedance measurements were compared with modeling. Hot electrons, present in the LAPD plasma, were inferred to contribute significantly to both the DC and RF currents and hence the RF impedance. It was postulated that at very low power hot electrons could not access the region of the plasma subject to RF waves, resulting in an increased RF impedance. Within some experimental limitations and significant assumptions, an RF sheath impedance model was verified by the experimental data.</p>
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Allen Brain Atlas
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Annotated Behaviour and Observability Dataset (ABODe)
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