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Journal articles on the topic 'Outer diameter'

Author: Grafiati

Published: 28 May 2022

Last updated: 31 July 2025

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1

Zhao, Min, Lin Zhang, and Bin Wu. "Study on the Dynamic Characteristics of the Large Diamond Circular Saw Blade." Advanced Materials Research 945-949 (June 2014): 781–84. http://dx.doi.org/10.4028/www.scientific.net/amr.945-949.781.

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Large diamond circular saw blade is a plane with large diameters and thin thick, so there are serious vibration problems in the process of sawing stone under the high-speed. By using the force hammer producing incentive experiment method, the effect of the inner and outer diameters to the vibration modal and frequency of diamond circular saw blade are analyzed. Through comparing inner and outer diameter, it can be found that the inner diameter has greater influence on the natural frequency, while the outer diameter has greater influence on the amplitude. The result supplies reliable data for e

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2

Kishimoto, Takuma, Hayate Sakaguchi, Saki Suematsu, et al. "Deformation Behavior Causing Excessive Thinning of Outer Diameter of Micro Metal Tubes in Hollow Sinking." Metals 10, no. 10 (2020): 1315. http://dx.doi.org/10.3390/met10101315.

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The deformation behavior of microtubes during hollow sinking was investigated to clarify the mechanism of the excessive thinning of their outer diameters. Stainless-steel, copper, and aluminum alloy tubes were drawn without an inner tool to evaluate the effect of Lankford values on outer diameter reduction. Drawing stress and stress-strain curves were obtained to evaluate the yielding behavior during hollow sinking. The observed yielding behavior indicated that the final outer diameter of the drawn tube was always smaller than the die diameter due to the uniaxial tensile deformation starting f

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Qu, Yongtao, Wenwen Yu, Nana Niu, Shaocen Liang, Guibao Li, and Guangzhe Piao. "Fullerene C60 Nanotubes Fabricated with Light Irradiation as a Critical Influence Factor." ISRN Condensed Matter Physics 2012 (September 26, 2012): 1–7. http://dx.doi.org/10.5402/2012/140842.

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Crystalline fullerene C60 nanotubes were prepared simply via liquid-liquid interfacial precipitation using the mixture of C60-saturated pyridine and isopropyl alcohol. C60-saturated pyridine solution was exposed to visible light to promote the growth of fullerene C60 nanotubes. The average diameters of the fullerene particles in C60-pyridine colloid solution after irradiation were characterized by dynamic light scattering. After light irradiation, an outer separated layer of pyridine surrounds the fullerene particles because of the charge transfer complexes formation. The mean ratios of inner

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4

Wu, Jiehao, Qi Zong, and Ying Xu. "Experimental Study of the Dynamic Tensile Mechanical Properties of a Coal Sandstone Disc with a Central Hole." Advances in Civil Engineering 2020 (November 28, 2020): 1–9. http://dx.doi.org/10.1155/2020/8851575.

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Deep mine rocks are often subjected to rock burst induced by dynamic load. The existence of initial holes will reduce the mechanical properties of rocks and affect the stability and safety of the tunnel excavating. In order to study the effect of the ratios of inner and outer diameter on disc specimen dynamic mechanical properties and failure modes, we use cylindrical sandstone specimens of Φ50 × 25 mm to process center holes of different diameters, and a series of dynamic splitting test were carried out with a system of split Hopkinson pressure bar (SHPB) with the diameter of Φ50 mm when the

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Villota, Isabella, Paulo C. Calvo, Oscar I. Campo, and Faruk Fonthal. "Microneedles: One-Plane Bevel-Tipped Fabrication by 3D-Printing Processes." Molecules 27, no. 19 (2022): 6634. http://dx.doi.org/10.3390/molecules27196634.

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This article presents microneedles analyses where the design parameters studied included length and inner and outer diameter ranges. A mathematical model was also used to generalize outer and inner diameter ratios in the obtained ranges. Following this, the range of inner and outer diameters was completed by mechanical simulations, ranging from 30 μm to 134 μm as the inner diameter range and 208 μm to 250 μm as the outer diameter range. With these ranges, a mathematical model was made using fourth-order polynomial regressions with a correlation of 0.9993, ensuring a safety factor of four in wh

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6

Kizuka, Tokushi, Kun'ichi Miyazawa, and Takayuki Tokumine. "Young's Modulus of Single-Crystal Fullerene Nanotubes." Journal of Nanotechnology 2012 (2012): 1–5. http://dx.doi.org/10.1155/2012/969357.

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We performed bending tests on single-crystal nanotubes composed of fullerene C70molecules byin situtransmission electron microscopy with measurements of loading forces by an optical deflection method. The nanotubes with the outer diameters of 270–470 nm were bent using simple-beam and cantilever-beam loading by the piezomanipulation of silicon nanotips. Young's modulus of the nanotubes increased from 61 GPa to 110 GPa as the outer diameter decreased from 470 nm to 270 nm. Young's modulus was estimated to be 66% of that of single-crystal C60nanotubes of the same outer diameter.

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7

Mitra, Manu. "Characteristics of Carbon Nanotube Relay." Scientific Journal of Research and Reviews 1, no. 4 (2019): 1–9. https://doi.org/10.5281/zenodo.2642490.

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Relays are electromechanical switches which are normally used to control high power electrical machineries. It is very important part for a control a single circuit or multiple circuits either with a low power signal or high-power signals. In this paper Carbon nanotube Relay has been used with trench of gold as electrode material and characteristics of carbon nanotube relay such as histogram of outer diameters, histogram of inner diameters, histogram of lengths, pull in voltage vs outer diameter, pull back voltage vs outer diameter, pull in voltage vs length, pull back voltage vs length, pullb

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8

Liu, Kaichen, Junrui Chai, Yao Zhang, Ying Tian, and Ruiqing Li. "Study on Seepage Characteristics of Radial Flow in Rock Mass Based on Radius Effect." Geofluids 2022 (January 30, 2022): 1–18. http://dx.doi.org/10.1155/2022/5368690.

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The radial fluid flow in fractures is affected by the size of the inner diameter and the position of the outer diameter, but the influence of the two factors on the flow velocity remains unclear. This study reveals the relationship through the coupled shear flow experiments and numerical simulations. Experimental results show that the fracture aperture is decreased by 0.175 mm under the unit effective stress, with the increase of 0.902 MPa in the shear stress. COMSOL is used to simulate the seepage of fractures under different inner and outer diameters. Simulation results show that the transit

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9

Akar, Mustafa Atakan, and Mehmet Kucuk. "Vortex shedding control on a bare cylinder using hexagonal perforated outer cylinder." Canadian Journal of Physics 95, no. 1 (2017): 69–84. http://dx.doi.org/10.1139/cjp-2016-0549.

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The aim of the study is to observe the effect of outer hexagonal perforated cylinder surrounding an inner cylinder on vortex structure behind bluff body. Vortex shedding characteristics from bluff body are experimentally studied by particle image velocimetry (PIV) in deep water. The inner cylinder had seven different diameters (Di), varied from 30 to 90 mm with an increment of 10 mm and the hexagonally perforated outer cylinder placed outside of the inner cylinder was used as a control element. Experiments were carried out with six perforated cylinders with a diameters of 100 mm (Do) and six p

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10

Cho, Soonmo, Euntaek Lee, Seunggi Jo, Gyu Man Kim, and Woojin Kim. "Extrusion Characteristics of Thin Walled Tubes for Catheters Using Thermoplastic Elastomer." Polymers 12, no. 8 (2020): 1628. http://dx.doi.org/10.3390/polym12081628.

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As the market for minimally invasive surgery has grown, the demand for high-precision and high-performance catheters has increased. Catheters for the diagnosis and treatment of cardiovascular or cerebrovascular disease mainly use a braided wire tube with a polymer inner liner and outer jacket to improve the pushability and trackability. The outer jacket should have an accurate inner and outer diameter and while maintaining a wall thickness of 150 µm or less. In this study, we designed and manufactured a tip and die capable of extruding an outer jacket with a wall thickness of 150 µm or less us

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11

Shi, Kaige, and Xin Li. "Optimization of outer diameter of Bernoulli gripper." Experimental Thermal and Fluid Science 77 (October 2016): 284–94. http://dx.doi.org/10.1016/j.expthermflusci.2016.03.024.

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12

Koehler, Till, Michael Buege, Heinrich Schleiting, Melchior Seyfarth, Klaus Tiroch, and Marc Vorpahl. "Changes of the eSheath Outer Dimensions Used for Transfemoral Transcatheter Aortic Valve Replacement." BioMed Research International 2015 (2015): 1–6. http://dx.doi.org/10.1155/2015/572681.

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Innovative catheter systems with lower-profile sheaths and a dynamic expansion mechanism (DEM) were recently introduced for transcatheter aortic valve replacement (TAVR). However, the labeling of 14 F and 16 F eSheaths denote the inner nominal diameter. Exact changes of the clinically relevant outer diameters during usage are not available. eSheaths were measured every 30 mm using a digital caliper. Unused 14 F and 16 F eSheaths served as controls. Maximum eSheath diameters were measured after insertion of the Edwards Commander Delivery System (ECDS) into 14 F and 16 F eSheaths.Finally, eSheat

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13

Grasso, Giovanni, Concetta Alafaci, Marcello Passalacqua, Manfred Tschabitscher, Francesco M. Salpietro, and Francesco Tomasello. "Landmarks for Vertebral Artery Repositioning in Bulbar Compression Syndrome: Anatomic and Microsurgical Nuances." Operative Neurosurgery 56, suppl_1 (2005): ONS—160—ONS—164. http://dx.doi.org/10.1227/01.neu.0000146685.17628.05.

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Abstract OBJECTIVE: The purpose of this study was to better elucidate the anatomic relationship between the vertebral artery (VA) along with its perforating vessels and the brainstem to develop anatomic guidelines that would be helpful when decompressing medulla oblongata compressed by the VA. METHODS: Microanatomy dissection was performed in six formalin-fixed cadaveric heads. The VA, posteroinferior cerebellar artery (PICA), anteroinferior cerebellar artery (AICA), and lower brainstem perforators were examined under magnification using a surgical microscope. The outer diameters of the VA, PI

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14

Akca, Ferdi, Ka Yan Lam, Niels Verberkmoes, Ignace de Lathauwer, Mohamed Soliman-Hamad, and Bart van Straten. "Predictive value of great saphenous vein mapping prior to endoscopic harvesting in coronary artery bypass surgery." Interactive CardioVascular and Thoracic Surgery 31, no. 1 (2020): 16–19. http://dx.doi.org/10.1093/icvts/ivaa063.

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Abstract OBJECTIVES The use of endoscopic vein harvesting in patients undergoing coronary artery bypass grafting is increasing, often using bedside mapping. However, data on the predictive value of great saphenous vein (GSV) mapping are scarce. This study assessed whether preoperative mapping could predict final conduit diameter. METHODS A prospective registry was created that included 251 patients. Saphenous vein mapping was performed prior to endoscopic vein harvesting at 3 predetermined sites. After harvesting and preparing the GSV, the outer diameters were measured. Appropriate graft size

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15

Lish, Jim, Jeff C. H. Ko, and Mark E. Payton. "Evaluation of Two Methods of Endotracheal Tube Selection in Dogs." Journal of the American Animal Hospital Association 44, no. 5 (2008): 236–42. http://dx.doi.org/10.5326/0440236.

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This study evaluated two methods of endotracheal tube selection using 28 fresh canine carcasses of various ages, weights, and genders. The two selection methods were 1) nasal septal width pairing with outer diameter of an endotracheal tube, and 2) digital palpation of the tracheal outer diameter to determine the endotracheal tube size. All dogs were dolichocephalic breeds. Results of this study showed that the canine nasal septal width method of endotracheal tube selection was correlated with the size of the tracheal internal (r=0.72) and outer (r=0.73) diameters. However, evidence shows that

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16

Kubín, Milan, and Jiří Hirš. "Hydraulic Diameter of Compact Design Tubes with Small Diameter." Advanced Materials Research 1041 (October 2014): 11–14. http://dx.doi.org/10.4028/www.scientific.net/amr.1041.11.

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The contribution is aimed on hydraulic diameter of Compact Design Tubes with the small diameter. First part of contribution is focused on calculation of the hydraulic pipe diameter by contemporary way for technical use. Second part of contribution is aimed on Compact Design Tubes with the small diameter and compared with typical smooth pipes. Results of this study confirm general fact, that the inner/outer hydraulic diameter of Compact Design Tubes is different from the hydraulic diameter of typical smooth pipe.

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17

Wong, Lufee, Eldho Paul, Hamsaveni KM Murday, et al. "Biparietal diameter measurements using the outer-to-outer versus outer-to-inner measurement: A question of pedantry?" Australasian Journal of Ultrasound in Medicine 21, no. 3 (2018): 161–68. http://dx.doi.org/10.1002/ajum.12091.

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18

Koops, R., R. Bergmans, and G. Kotte. "Calibration of outer diameter standards (EURAMET.L-K4 2005.1)." Metrologia 57, no. 1A (2020): 04003. http://dx.doi.org/10.1088/0026-1394/57/1a/04003.

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19

Urata, M., H. Maeda, N. Aoki, and G. Uchiyama. "17 Tesla magnet with 300 mm outer diameter." IEEE Transactions on Magnetics 27, no. 2 (1991): 2391–94. http://dx.doi.org/10.1109/20.133700.

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20

Šimonovský, Václav. "The Specificity of Appendiceal Outer Diameter at US." Radiology 220, no. 3 (2001): 828–30. http://dx.doi.org/10.1148/radiology.220.3.r01se48828.

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21

Malhotra, S. K., and Amitabh Dutta. "Pediatric Endotracheal Tubes: The Advantage of Outer Diameter." Anesthesia & Analgesia 93, no. 3 (2001): 801–2. http://dx.doi.org/10.1097/00000539-200109000-00053.

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22

Mittman, Scott, Dale G. Flaming, David R. Copenhagen, and Jack H. Belgum. "Bubble pressure measurement of micropipet tip outer diameter." Journal of Neuroscience Methods 22, no. 2 (1987): 161–66. http://dx.doi.org/10.1016/0165-0270(87)90010-0.

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23

Sugiyama, Tomoki, Ahmed H. A. Dabwan, Mai Furukawa, ikki Tateishi, Hideyuki Katsumata, and Satoshi Kaneco. "DEVELOPMENT OF CARBON NANOTUBE AS HIGHLY ACTIVE PHOTOCATATLYTIC ADSORBENT FOR TREATMENT OF ACID RED 88 DYE." WATER CONSERVATION & MANAGEMENT 5, no. 1 (2020): 26–29. http://dx.doi.org/10.26480/wcm.01.2021.26.29.

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In recent years, photocatalysts have been used in various fields, and are particularly attracting attention in the fields of environment, medicine, and agriculture. A large number of catalytic active sites are required to produce a more efficient photocatalyst, and for that purpose, a large specific surface area is desired. Therefore, in this study, in order to develop a highly active photocatalytic material, the outer diameter of titanium oxide nanotubes was controlled by a template synthesis method using carbon nanotubes with different outer diameters to increase the specific surface area. C

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24

Wang, Zhiwei. "Optimal design of medium-buried pipe with horizontal wells." Advances in Engineering Technology Research 8, no. 1 (2023): 541. http://dx.doi.org/10.56028/aetr.8.1.541.2023.

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In this paper, based on the emergence of medium-depth cased buried pipe with horizontal wells, a kind of optimization design for this buried pipe is designed. Firstly, a semi-analytical model and related evaluation indexes are established for the model, and three different schemes are used for simulation and comparison, which are: changing the inner and outer diameters of the buried pipe at the same time, changing the outer pipe diameter while keeping the inner pipe diameter unchanged, and changing the inner pipe diameter while keeping the outer pipe diameter unchanged, which are of great sign

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25

Liu, Panliang, Yanchao Sun, Jinxiang Wang, and Guohua Chang. "Research on Peak Characteristics of Turbulent Flow in Horizontal Annuli with Varying Curvatures Based on Numerical Simulation." Symmetry 17, no. 7 (2025): 1167. https://doi.org/10.3390/sym17071167.

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Annular flow is a common flow configuration encountered in fields such as food engineering, energy and power engineering, and petroleum engineering. The annular space formed by the inner and outer pipes exhibits unique characteristics, with the distinct curvatures of the inner and outer pipes rendering the annulus fundamentally different from a circular pipe. The complexity of the annular structure complicates the rapid calculation of turbulent statistics in engineering practice, as modeling these statistics necessitates a comprehensive understanding of their peak characteristics. However, cur

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26

van der Riet, Claire, Richte C. L. Schuurmann, Angelos Karelis, et al. "Supra- and Infra-Renal Aortic Neck Diameter Increase after Endovascular Repair of a Ruptured Abdominal Aortic Aneurysm." Journal of Clinical Medicine 11, no. 5 (2022): 1203. http://dx.doi.org/10.3390/jcm11051203.

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Hypovolemia-induced hypotension may lead to an aortic diameter decrease in patients with a ruptured abdominal aortic aneurysm (rAAA). This study investigates the changes in supra- and infra-renal aortic neck diameters before and after endovascular aortic aneurysm repair (EVAR) for rAAA and the possible association with endograft apposition. A retrospective cohort study was conducted including 74 patients treated between 2010 and 2019 in two large European vascular centers. Outer-to-outer wall diameters were measured at +40, +10, 0, −10, and −20 mm relative to the lowest renal artery baseline o

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Xu, Wu Jiao, Xiao Tao Gong, Xiao Bing Yang, and Jie Zhou. "Deformation Behavior of Spirogyrate Ring for Cold Ring Rolling." Advanced Materials Research 239-242 (May 2011): 2435–39. http://dx.doi.org/10.4028/www.scientific.net/amr.239-242.2435.

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Based on the platform ABAQUS, a 3-D FEM model of spirogyrate ring rolling process has been developed to investigate the ring’s deformation behavior and the expansion law of the diameter. According to the FEM analysis, this kind of profile ring rolling process can be divided into two phases, i.e. the profile forming phase and the diameter increasing phase. During the former phase, the deformation of spirogyrate ring focuses on the profile formation and the diameter increases slowly. In the latter phase, the ring diameter expands rapidly. FEA illustrates that the material flowing to the outer di

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28

Denton, Kate M., Warwick P. Anderson, and Raja Sinniah. "Effects of angiotensin II on regional afferent and efferent arteriole dimensions and the glomerular pole." American Journal of Physiology-Regulatory, Integrative and Comparative Physiology 279, no. 2 (2000): R629—R638. http://dx.doi.org/10.1152/ajpregu.2000.279.2.r629.

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The diversity of renal arteriole diameters in different cortical regions has important consequences for control of glomerular capillary pressure. We examined whether intrarenal angiotensin II (ANG II; 0.1, 1, or 5 ng · kg−1 · min−1) in anesthetized rabbits acts preferentially on pre- or postglomerular vessels using vascular casting. ANG II produced dose-related reductions in afferent and efferent diameters in the outer, mid, and inner cortex, without effecting arterial pressure. Afferent diameter decreased more than efferent in the outer and mid cortex ( P < 0.05) but by a similar extent in

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29

Lichen, Zhao, Yin Jianping, Li Xudong, and Yi Jianya. "Study on the Influence of Composite Charge Structure Parameters on Detonation Wavefront." Journal of Physics: Conference Series 2891, no. 5 (2024): 052026. https://doi.org/10.1088/1742-6596/2891/5/052026.

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Abstract In order to study the detonation wave propagation process of the composite charge, the wavefront type, and the relationship between the characteristic parameter α of the composite charge wavefront and the detonation velocity difference of the inner and outer layer explosive. The finite element software was used to numerically simulate and calculate six structural schemes that changed the detonation velocity of the inner and outer layers explosive of the composite charge and the diameter ratio of the inner and outer explosives. The test results show that the composite charge structure

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30

Lim, Seong Joo, Ho Joon Choi, Duk Jae Yoon, Ha Guk Jeong, and C. H. Lee. "Product Geometry for Process Parameter during Rotary Swaging Process as Chipless Forming Process." Materials Science Forum 544-545 (May 2007): 439–42. http://dx.doi.org/10.4028/www.scientific.net/msf.544-545.439.

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This study deals with the dimensional accuracy of outer diameter and geometrical workability in rotary swaged product for various process parameters such as percent reduction in outer diameter and the ratio of thickness to outer diameter of a tube. It is generally known that greater cold strengthening is achieved by rotary swaging process rather than by conventional process such as rolling with respect to the same reduction of cross-sectional area. Percent reduction in the diameter and the ratio are considered and selected as important process parameters because of playing a key role during ro

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31

Allam, Riham S. H. M., and Rania A. Ahmed. "Evaluation of the Lower Punctum Parameters and Morphology Using Spectral Domain Anterior Segment Optical Coherence Tomography." Journal of Ophthalmology 2015 (2015): 1–7. http://dx.doi.org/10.1155/2015/591845.

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Purpose. To study features of the lower punctum in normal subjects using spectral domain anterior segment optical coherence tomography (SD AS-OCT).Methods. Observational cross-sectional study that included 147 punctae (76 subjects). Punctae were evaluated clinically for appearance, position, and size. AS-OCT was used to evaluate the punctal shape, contents, and junction with the vertical canaliculus. Inner and outer diameters as well as depth were measured.Results. 24 males and 52 females (mean age44±14.35 y) were included. Lower punctum was perceived by OCT to be an area with an outer diamete

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Zhu, Ge, Li Na Lou, Xian Quan Wang, and Jing Luo. "Design for Pellet Measurement System Based on TCD1206." Applied Mechanics and Materials 40-41 (November 2010): 21–26. http://dx.doi.org/10.4028/www.scientific.net/amm.40-41.21.

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The article proposed a kind of new measuring technique suitable for pellet outer diameter --shading of measurement, using high quality laser as the light, linear CCD image sensor TCD1206 acts testing device, TCD1206 produced drive without delay by single-chip microcomputer, process pellet outer diameter signal coming from TCD1206 by floating threshold method of binary, finally the processed binary signals send back to the single-chip microcomputer, through MAX232 serial communication transfer to PC for displaying. The whole process realizes real-time detection to pellet outer diameter, and mak

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33

Saifee, A. H., and Arvind Mittal. "Optimisation of Inner Diameter to Outer Diameter Ratio of Axial Flux Permanent Magnet Generator." IOSR Journal of Electrical and Electronics Engineering 9, no. 6 (2014): 43–47. http://dx.doi.org/10.9790/1676-09634347.

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Xu, Jinping, Zhiyun Wang, and Mo Yang. "Corrected Correlation for Turbulent Convective Heat Transfer in Concentric Annular Pipes." Energies 18, no. 14 (2025): 3643. https://doi.org/10.3390/en18143643.

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This paper addresses the errors that arise when calculating the convective heat transfer in concentric annular pipes by using the equivalent diameter and turbulent heat transfer formula for circular pipes. This approach employs numerical simulations to solve the Reynolds-averaged Navier–Stokes equations and uses the realizable k–ε turbulence model and a low Reynolds number model near a wall. This study conducts numerical simulations of turbulent convective heat transfer within a concentric annular pipe. The results show that the shear stress on the inner wall surface of the concentric annular

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Faury, Gilles, Gail M. Maher, Dean Y. Li, Mark T. Keating, Robert P. Mecham, and Walter A. Boyle. "Relation between outer and luminal diameter in cannulated arteries." American Journal of Physiology-Heart and Circulatory Physiology 277, no. 5 (1999): H1745—H1753. http://dx.doi.org/10.1152/ajpheart.1999.277.5.h1745.

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Resistance in blood vessels is directly related to the inner (luminal) diameter (ID). However, ID can be difficult to measure during physiological experiments because of poor transillumination of thick-walled or tightly constricted vessels. We investigated whether the wall cross-sectional area (WCSA) in cannulated arteries is nearly constant, allowing IDs to be calculated from outer diameters (OD) using a single determination of WCSA. With the use of image analysis, OD and ID were directly measured using either transillumination or a fluorescent marker in the lumen. IDs from a variety of vesse

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36

Mykhailyshyn, Roman, František Duchoň, Ivan Virgala, Peter Jan Sinčák, and Ann Majewicz Fey. "Optimization of Outer Diameter Bernoulli Gripper with Cylindrical Nozzle." Machines 11, no. 6 (2023): 667. http://dx.doi.org/10.3390/machines11060667.

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Gripping and manipulating objects using non-contact and low-contact technologies is becoming increasingly necessary in manufacturing. One of the promising contactless gripping technologies is Bernoulli gripping devices for industrial robots. They have many advantages, but when changing the nozzle geometry, it is difficult to find the optimal parameters of the outer diameter of the gripper and its operating parameters. Therefore, the article presents a model for numerical simulation of the dynamics of airflow in the nozzle of the Bernoulli gripping device and in the radial gap between its activ

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37

Morovič, Ladislav, Michaela Kritikos, Róbert Sobota, et al. "Effect of the Friction and Reduction Angle on the Accuracy of Cold Drawing Steel Tubes STL Model Based on FEM Analysis." Research Papers Faculty of Materials Science and Technology Slovak University of Technology 28, no. 47 (2020): 32–39. http://dx.doi.org/10.2478/rput-2020-0016.

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Abstract The object of the study was to create a computer model that resembles the process of cold drawing seamless steel tubes, and evaluate the influence of selected process parameters on selected final dimensions and tolerances of STL models of the tubes obtained from DEFORM simulation software. The STL models of tubes generated from the simulations were evaluated, and the effects of the reduction angle and the friction coefficient on the inner/outer diameter, inner/outer roundness and concentricity were subsequently found. It was proven that the inner and outer diameters are not influenced

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38

Yaqoob, Jamal. "Can outer-to-outer diameter be used alone in diagnosing appendicitis on 128-slice MDCT?" World Journal of Radiology 6, no. 12 (2014): 913. http://dx.doi.org/10.4329/wjr.v6.i12.913.

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Nasir Mousavi, Seyed Mohammad, Karina Bianka Bodnár, and János Nagy. "Studying the effects of traits in the genotype of three maize hybrids in Hungary." Acta Agraria Debreceniensis, no. 1 (May 23, 2019): 97–101. http://dx.doi.org/10.34101/actaagrar/1/2378.

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In this study, we selected three hybrids (Armagnac, Loupiac, and Sushi) for evaluation of the effect of traits in genotype in Debrecen. In 2017, the total rainfall from May to October was 314 mm in Debrecen, which was 236 mm in the winter period before sowing. The obtained results showed that there was a positive correlation between the weight of the cob maize and the rate of seed/cob, number of rows with number of seeds in column and outer diameter ear with weight of cob and number of rows in grain per ear and the rate of seed / cob; Also, there was a negative correlation between grain weight

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Neumann, Gregory A., Maria T. Zuber, Mark A. Wieczorek, et al. "Lunar impact basins revealed by Gravity Recovery and Interior Laboratory measurements." Science Advances 1, no. 9 (2015): e1500852. http://dx.doi.org/10.1126/sciadv.1500852.

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Observations from the Gravity Recovery and Interior Laboratory (GRAIL) mission indicate a marked change in the gravitational signature of lunar impact structures at the morphological transition, with increasing diameter, from complex craters to peak-ring basins. At crater diameters larger than ~200 km, a central positive Bouguer anomaly is seen within the innermost peak ring, and an annular negative Bouguer anomaly extends outward from this ring to the outer topographic rim crest. These observations demonstrate that basin-forming impacts remove crustal materials from within the peak ring and t

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Jeon, Y., H. G. Ryu, J. H. Bahk, C. W. Jung, and J. M. Goo. "A New Technique to Determine the Size of Double-lumen Endobronchial Tubes by the Two Perpendicularly Measured Bronchial Diameters." Anaesthesia and Intensive Care 33, no. 1 (2005): 59–63. http://dx.doi.org/10.1177/0310057x0503300109.

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The cross-section of the mainstem bronchi is not completely round. For preoperative selection of a double-lumen endobronchial tube size, it may be necessary to measure the mediolateral and the anteroposterior bronchial diameters, which can be measured respectively on chest radiograph and computed tomography. With Internal Review Board approval and patients’ informed consent, 105 elective thoracic surgical patients who needed left-sided double-lumen tubes were enrolled. Double-lumen tube size was selected depending on the arithmetic mean of the mediolateral and anteroposterior bronchial diamete

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Ahmed El Melegy. "Roundness Deviations and Diameter Measurements for Diameter Standards." Power System Technology 48, no. 3 (2024): 1231–46. https://doi.org/10.52783/pst.937.

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Diameter standards have clear importance at both laboratory and industrial levels. The calibration of such standards acts as a challenge to be carried out in high accuracy and to fulfill all related parameters. Diameter measurements and roundness deviations of diameter standards are basic parameters that shall be measured in precise ways. In this work, a proposed method is used to measure the diameter and roundness errors of set of diameter standards; 50 mm ring and plug gauges. A length-measuring machine and roundness roundness-measuring machine are used for diameter and roundness measurement

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Buranský, Ivan, and Eva Buranská. "Comparison of Measurement Methods to Acquire the Steel Tubes Characteristics." Materials Science Forum 919 (April 2018): 411–19. http://dx.doi.org/10.4028/www.scientific.net/msf.919.411.

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The main paper idea was compared three methods (Contact CenterMax and contactless ATOS TripleScan II, Metrotom 1500) for data acquisition to the output characteristics of steel drawing tubes. Outer and internal diameters, eccentricity and ovality were measured. Steel tubes produced by drawing should accomplish shape and dimensional characteristics. These can be measured by various contact and contactless methods. Each of these methods have advantages and disadvantages. The computed tomography advantages are, that we obtain both outer and inner tube shapes. Output is a 3D model from which you c

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Liu, Huanbao, Guangming Zheng, Xiang Cheng, Xianhai Yang, and Guangxi Zhao. "Simulation Analysis of the Influence of Nozzle Structure Parameters on Material Controllability." Micromachines 11, no. 9 (2020): 826. http://dx.doi.org/10.3390/mi11090826.

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With the evolution of three-dimensional (3D) printing, many restrictive factors of 3D printing have been explored to upgrade the feasibility of 3D printing technology, such as nozzle structure, print resolution, cell viability, etc., which has attracted extensive attention due to its possibility of curing disease in tissue engineering and organ regeneration. In this paper, we have developed a novel nozzle for 3D printing, numerical simulation, and finite element analysis have been used to optimize the nozzle structure and further clarified the influence of nozzle structure parameters on materi

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Gilman, E. F., and R. J. Beeson. "Copper Hydroxide Affects Root Distribution of Ilex cassine in Plastic Containers." HortTechnology 5, no. 1 (1995): 48–49. http://dx.doi.org/10.21273/horttech.5.1.48.

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The root : shoot ratio for Ilex cassine L. grown 7 months in copper-treated containers was less than in nontreated containers. There was less dry weight for roots <5 mm in diameter in copper-treated containers than in nontreated containers in the outer 1 cm of the rootball. Dry weight of roots >5 mm in diameter within the rootball were not affected by copper hydroxide treatment. Coating the interior of a plastic container with cupric hydroxide eliminated coarse roots (> 5 mm in diameter) and significantly reduced fine root weight from the outer 1 cm of the rootball. Fine roots inside

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Anuwongnukroh, Niwat, Nittaya Jiraanankul, Surachai Dechkunakorn, Pornkiat Churnjitapirom, and Peerapong Tua-Ngam. "Comparison of Dimensions and Residual Forces of Various Orthodontic Elastomeric Ligatures." Advanced Materials Research 746 (August 2013): 315–20. http://dx.doi.org/10.4028/www.scientific.net/amr.746.315.

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Objective: The study aimed to compare dimensions and residual forces of various commercial type orthodontic elastomeric ligatures available in Thailand. Materials and Methods: The study compared 5 types of elastomeric ligatures: MU-MTEC, UnitekTM, MorelliTM, WelovehealthTM and DentsplyTM. A digital caliper was used to measure dimensions: the inner and outer diameters and cross-sectional thickness. Then the initial extension force and residual force on days 1, 2, 3, 4, 5, 6, 7, 14 and 28 were measured according to ISO 21606: 2007. The data were analyzed with the Kruskal-Wallis test and Spearman

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Hrebennikov, Mykhailo M., Oleksandr H. Dibir, Anatolii O. Kyrpikin, and Mykola I. Pekelnyi. "Calculation of the Tubular Elements Made of Pressed Profiles." Journal of Mechanical Engineering 26, no. 3 (2023): 28–32. http://dx.doi.org/10.15407/pmach2023.03.028.

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This paper is dedicated to ensuring the strength of cargo equipment elements of transport aircraft. The strength of rollers of roller conveyors, which are made of standard pressed aluminum tubular profiles or composite tubular elements, is considered. The main disadvantage of these semi-finished products is the deviation of the diameter of these standard aluminum profiles, which leads to the emergence of eccentricity Δ between the axes of the outer and inner surfaces. The influence of eccentricity on the change in the values of normal and tangential stresses is considered. This analysis was ca

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Olk, Charles H., and Joseph P. Heremans. "Scanning tunneling spectroscopy of carbon nanotubes." Journal of Materials Research 9, no. 2 (1994): 259–62. http://dx.doi.org/10.1557/jmr.1994.0259.

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Calculations predict that carbon nanotubes may exist as either semimetals or semiconductors, depending on diameter and degree of helicity. This communication presents experimental evidence supporting the calculations. Scanning tunneling microscopy and spectroscopy (STM-S) data taken in air on nanotubes with outer diameters from 17 to 90 Å show evidence of one-dimensional behavior; the current-voltage (I-V) characteristics are consistent with a density of states containing Van Hove type singularities for which the energies vary linearly with inverse nanotube diameter.

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Kadhim, Zena K., and Safaa Abed Mohammad. "Experimental Investigation to Enhance the Heat Transfer in Heat Exchanger by Made Groove in Outer Surface of the Inner Tube." Wasit Journal of Engineering Sciences 5, no. 1 (2017): 1–15. http://dx.doi.org/10.31185/ejuow.vol5.iss1.62.

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This study deals with experimental work implementing to recover the benefit by changing the shape of the tube in heat exchanger (HE) and improving the heat transfer using water as the working fluid. The experimental tests were carried out in build and design a complete test system for counter flow heat exchanger. The tested system consisting of a copper tube with (1m) length (17.05) mm inner diameter (19.05) mm outer diameter, fixed concentric within the outer tube was made of a material PVC. With an “inner diameter (ID) (43 mm) and outer diameter (OD) (50 mm)” isolated from the outside by usi

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Zheng, Changjie, Hanlong Liu, Xuanming Ding, and Qiang Fu. "Horizontal Vibration of a Large-Diameter Pipe Pile in Viscoelastic Soil." Mathematical Problems in Engineering 2013 (2013): 1–13. http://dx.doi.org/10.1155/2013/269493.

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An analytical solution is developed in this paper to investigate the horizontal dynamic response of a large-diameter pipe pile in viscoelastic soil layer. Potential functions are applied to decouple the governing equations of the outer and inner soil. The analytical solutions of the outer and inner soil are obtained by the method of separation of variables. The horizontal dynamic response and complex dynamic stiffnesses of the pipe pile are then obtained based on the continuity conditions between the pile and the outer and inner soil. To verify the validity of the solution, the derived solutio

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