Log in

Relevant bibliographies by topics / APEX ANGLE OF THE CONE / Journal articles

To see the other types of publications on this topic, follow the link: APEX ANGLE OF THE CONE.

Journal articles on the topic 'APEX ANGLE OF THE CONE'

Author: Grafiati

Published: 11 September 2023

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 50 journal articles for your research on the topic 'APEX ANGLE OF THE CONE.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse journal articles on a wide variety of disciplines and organise your bibliography correctly.

1

Stefas, Nikolaos, Patrick A. Plonski, and Volkan Isler. "Approximation algorithms for tours of orientation-varying view cones." International Journal of Robotics Research 39, no. 4 (2020): 389–401. http://dx.doi.org/10.1177/0278364919893455.

Full text

Abstract:

This article considers the problem of finding a shortest tour to visit viewing sets of points on a plane. Each viewing set is represented as an inverted view cone with apex angle [Formula: see text] and height [Formula: see text]. The apex of each cone is restricted to lie on the ground plane. Its orientation angle (tilt) [Formula: see text] is the angle difference between the cone bisector and the ground plane normal. This is a novel variant of the 3D Traveling Salesman Problem with Neighborhoods (TSPN) called Cone-TSPN. One application of Cone-TSPN is to compute a trajectory to observe a giv

APA, Harvard, Vancouver, ISO, and other styles

2

ZHAO, ZIJIE, CHAO GAO, FENG LIU, and SHIJUN LUO. "PLASMA FLOW CONTROL OVER FOREBODY AT HIGH ANGLES OF ATTACK." Modern Physics Letters B 24, no. 13 (2010): 1405–8. http://dx.doi.org/10.1142/s0217984910023736.

Full text

Abstract:

Forward blowing from a pair of plasma actuators on the leeward surface and near the apex is used to switch the asymmetric vortex pair over a cone of semi-apex angle 10° at high angles of attack. Wind tunnel pressure measurements show that by appropriate design of the actuators and appropriate choice of the AC voltage and frequency, side forces and yawing moments of opposite signs can be obtained at a given angle of attack by activating one of the plasma actuators. Further work is suggested.

APA, Harvard, Vancouver, ISO, and other styles

3

Bourgeois, Laure, Yoshio Bando, Satoshi Shinozaki, Keiji Kurashima, and Tadao Sato. "Boron nitride cones: structure determination by transmission electron microscopy." Acta Crystallographica Section A Foundations of Crystallography 55, no. 2 (1999): 168–77. http://dx.doi.org/10.1107/s0108767398008642.

Full text

Abstract:

A form of turbostratic boron nitride containing a large percentage of micrometre-size conically shaped particles was investigated by transmission electron microscopy. Electron diffraction patterns revealed the presence of correlations between adjacent boron nitride layers. The diffraction patterns were also used to determine the cone apex angle of many cone-like objects. The apex angles exhibited a broad distribution from 84 to 130° with an ill defined peak in the 92–95° region. These results could be accounted for by a structure model in which conical boron nitride layers are helically wound

APA, Harvard, Vancouver, ISO, and other styles

4

Huang, Geng, and Huan Liu. "Thermal Elastohydrodynamic Lubrication Analysis for Rolling Cone Enveloping End Face Worm Drive." Journal of Physics: Conference Series 2459, no. 1 (2023): 012105. http://dx.doi.org/10.1088/1742-6596/2459/1/012105.

Full text

Abstract:

Abstract To explore the thermal elastohydrodynamic lubrication performance of rolling cone enveloping end face worm drive, the mathematical model of thermal elastohydrodynamic lubrication is established based on the meshing theory of rolling cone enveloping end face worm drive and elastohydrodynamic lubrication theory. With the help of the numerical analysis software MATLAB, the thermal elastohydrodynamic lubrication performance under smooth conditions is selectively analyzed by the multigrid method. Besides, the effects of throat coefficient, cone apex radius and half cone angle of the rollin

APA, Harvard, Vancouver, ISO, and other styles

5

Pincus, HJ, V. Silvestri, and Y. Fahmy. "Influence of Apex Angle on Cone Penetration Factors in Clay." Geotechnical Testing Journal 18, no. 3 (1995): 315. http://dx.doi.org/10.1520/gtj11000j.

Full text

APA, Harvard, Vancouver, ISO, and other styles

6

WANG, JIANLEI, HUAXING LI, FENG LIU, and SHIJUN LUO. "CHARACTERISTICS OF FORE-BODY SEPARATE FLOW AT HIGH ANGLE OF ATTACK UNDER PLASMA CONTROL." Modern Physics Letters B 24, no. 13 (2010): 1401–4. http://dx.doi.org/10.1142/s0217984910023724.

Full text

Abstract:

A pair of plasma actuators with horseshoe shape is proposed for dynamic manipulation of forebody aerodynamic load at high angles of attack. Preliminary wind tunnel pressure measurements show that asymmetric force over a conical forebody with semi-apex angle 10° can be manipulated by activating the plasma actuator mounted on one side of the cone tip. Further work is suggested.

APA, Harvard, Vancouver, ISO, and other styles

7

Li, Peng Fei, Shi Pan, Shi Fa Wu, Yin Li Li, and Wei Sun. "Fabrication of a Brush-Shaped Bent Fiber Probe for Near-Field Optics by Heated Pulling Combined with Chemical Etching." Solid State Phenomena 121-123 (March 2007): 689–92. http://dx.doi.org/10.4028/www.scientific.net/ssp.121-123.689.

Full text

Abstract:

We developed a method to fabricate bent fiber probe: heated pulling combined with chemical etching. Based on sampling theory, the resolving power of SNOM relates to the size of the probe tip. If the apex of the probe is smaller, the resolution ability of SNOM is higher. At the same time it can collect more near-field information through bigger cone angle of probe. Through improving the operation and optimizing the parameters of the heated-pulling instrument, we can obtain the probe with bent angle fiber varying from 120-150 degree, the cone angle varying from 40-90 degree and the apex diameter

APA, Harvard, Vancouver, ISO, and other styles

8

Kererat, C. "Bearing Capacity Investigation of Silty Sandy Soil Layer Using Kunzelstab Test." Journal of Applied Engineering Sciences 6, no. 1 (2016): 57–61. http://dx.doi.org/10.1515/jaes-2016-0006.

Full text

Abstract:

Abstract This study presents the effect of the 3 apex angles of cone and water levels on the bearing capacity of silty sandy soil (SM) layer by interpreting results from Kunzelstab test. The SM soil layer was prepared in the testing tank and it was used as the representative of sandy soil for some area in Thailand. As the results, the cone angle increase, a number of blows increase and the adjusted factors of the blows from the apex angles of 60° and 180 º to be that of the apex angle of 90º (control) were 1.118 and 0.878, respectively. The obtained correlation between the blows and the intern

APA, Harvard, Vancouver, ISO, and other styles

9

Deng, Jun, Gui Hua Liu, and Li Yue. "A Novel Method of Cone Fitting Based on 3D Point Cloud." Applied Mechanics and Materials 722 (December 2014): 321–26. http://dx.doi.org/10.4028/www.scientific.net/amm.722.321.

Full text

Abstract:

The accuracy and stability of circular conical surface is easily influenced by the different distribution of noise and points in point cloud, when 3D point cloud data fits conical surface. For this reason, this paper proposes a novel method of establishing and optimizing the objective function with conical vertex. First, calculate the axis direction and half-apex angle of the cone; second, calculate conical vertex according to the result got in the first step; third, establish objective function with axis direction and half-apex angle and vertex, and optimize it with Levenberg-Marquardt. The m

APA, Harvard, Vancouver, ISO, and other styles

10

Qin, Hua, and Cun Zhi Sun. "Design of Novel Beam Demagnifier Based on Total Reflection -Refraction." Advanced Materials Research 338 (September 2011): 22–25. http://dx.doi.org/10.4028/www.scientific.net/amr.338.22.

Full text

Abstract:

A novel beam demagnifier(a cone) is presented based on total internal reflection-refraction principle, and the light propagation characteristics inside the cone were studied by using ray-tracing method and computer simulation. This paper presents several proof-theoretic results concerning a cone as a beam demagnifier under certain conditions. When the semiapex angle of the cone is equal to a series of specific values an output beam is parallel to an incident beam, the beam's diameter narrows, and the demagnification ratio of the cone is a function of apex angle and there exists a series of ext

APA, Harvard, Vancouver, ISO, and other styles

11

Balatka, K., and S. Mochizuki. "Numerical Analysis of the Flow in an Annular-Conical Passage." Journal of Fluids Engineering 120, no. 3 (1998): 513–19. http://dx.doi.org/10.1115/1.2820692.

Full text

Abstract:

The purpose of this paper is to bring new insights into the flow phenomena in an annular-conical passage, which—as previously disclosed experimentally—forms a toroidal-vortex street. The two-dimensional, time dependent Navier-Stokes equations are solved with an explicit finite-difference scheme based on the Marker and Cell method. Solutions are obtained for four different cone apex angles (β = 60, 90, 120, and 180 deg). For each apex angle three cases of different passage spacing are computed. The Reynolds number ranges from Re = 100 ˜ 5000. The stress is put on the initiation and subsequent d

APA, Harvard, Vancouver, ISO, and other styles

12

Koprowski, Mariusz. "An analysis of lubricating medium flow through unsymmetrical lubricating gap of conical slide bearing." Polish Maritime Research 14, no. 4 (2007): 59–63. http://dx.doi.org/10.2478/v10012-007-0041-x.

Full text

Abstract:

An analysis of lubricating medium flow through unsymmetrical lubricating gap of conical slide bearing This paper presents a computer analysis of lubricating medium flow through unsymmetrical lubricating gap of conical slide bearing. Numerical calculations were carried out with the use of the software Matlab 7.1 and Mathematica 5.2 for example conical slide bearings of different values of cone apex angles of pin and sleeve and set values of relative eccentricity and skewing angle as well as dimensionless bearing length equal to 1.

APA, Harvard, Vancouver, ISO, and other styles

13

Hao, Jiang Nan, Chao Gao, and Yin Zhe Li. "Flow Control over a Circular-Cone-Cylinder by Unsteady Plasma Actuations." Advanced Materials Research 160-162 (November 2010): 933–38. http://dx.doi.org/10.4028/www.scientific.net/amr.160-162.933.

Full text

Abstract:

An experimental study of plasma duty-cycled actuation over slender forebodies is performed on a 20° circular-cone-cylinder model using a pair of Single Dielectric Barrier Discharge (SDBD) plasma actuators near the cone apex combined with a duty-cycle technique. The tests are carried out in a low-turbulence 3.0 m ×1.6 m low-speed wind tunnel at an angle of attack of 45°. The Reynolds number based on the cone base diameter is 50, 000. The frequency of the duty cycle is 10 Hz. The mechanisms of the unsteady excitations over various duty cycles of frequency 10 Hz are studied using ten Kulite press

APA, Harvard, Vancouver, ISO, and other styles

14

Zhang, Q. M. "A revised cone model and its application to non-radial prominence eruptions." Astronomy & Astrophysics 653 (September 2021): L2. http://dx.doi.org/10.1051/0004-6361/202141982.

Full text

Abstract:

Context. The traditional cone models achieve great success in studying the geometrical and kinematic properties of halo coronal mass ejections (CMEs). Aims. In this Letter, a revised cone model is proposed to investigate the properties of CMEs as a result of non-radial prominence eruptions. Methods. The cone apex is located at the source region of an eruption instead of the Sun center. The cone axis deviates from the local vertical by an inclination angle of θ1 and an angle of ϕ1. The length and angular width of the cone are r and ω, respectively. Results. The model was successfully applied to

APA, Harvard, Vancouver, ISO, and other styles

15

Naoumova, Julia, Heidrun Kjellberg, and Reet Palm. "Cone-beam computed tomography for assessment of palatal displaced canine position: A methodological study." Angle Orthodontist 84, no. 3 (2013): 459–66. http://dx.doi.org/10.2319/070913-502.1.

Full text

Abstract:

ABSTRACT Objective: To assess the inter- and intraexaminer reliability of a measurement method for evaluation of eruption angles and position of palatal displaced canines (PDCs) with cone-beam computed tomography (CBCT) images and to test the validity of the measured angles on a dry skull. Materials and Methods: Twenty patients (eight boys, 12 girls; age 11.4 ± 1.2 years) were randomly chosen among 67 patients from a study evaluating the interceptive effect of extracting the deciduous canine in children with PDCs. In total, 60 images were analyzed, because each patient had three CBCT examinati

APA, Harvard, Vancouver, ISO, and other styles

16

Zhu, Zheng-Zhong, Zuo-Chang Chen, Yang-Rong Yao, et al. "Rational synthesis of an atomically precise carboncone under mild conditions." Science Advances 5, no. 8 (2019): eaaw0982. http://dx.doi.org/10.1126/sciadv.aaw0982.

Full text

Abstract:

Carboncones, a special family of all-carbon allotropes, are predicted to have unique properties that distinguish them from fullerenes, carbon nanotubes, and graphenes. Owing to the absence of methods to synthesize atomically well-defined carboncones, however, experimental insight into the nature of pure carboncones has been inaccessible. Herein, we describe a facile synthesis of an atomically well-defined carboncone[1,2] (C70H20) and its soluble penta-mesityl derivative. Identified by x-ray crystallography, the carbon skeleton is a carboncone with the largest possible apex angle. Much of the s

APA, Harvard, Vancouver, ISO, and other styles

17

BOSE, PROSENJIT, MERCÈ MORA, CARLOS SEARA, and SAURABH SETHIA. "ON COMPUTING ENCLOSING ISOSCELES TRIANGLES AND RELATED PROBLEMS." International Journal of Computational Geometry & Applications 21, no. 01 (2011): 25–45. http://dx.doi.org/10.1142/s0218195911003536.

Full text

Abstract:

Given a set of n points in the plane, we show how to compute various enclosing isosceles triangles where different parameters such as area or perimeter are optimized. We then study a 3-dimensional version of the problem where we enclose a point set with a cone of fixed apex angle α.

APA, Harvard, Vancouver, ISO, and other styles

18

Bhuva, Montu P., and Shantanu K. Karkari. "The Role of Apex Angle of a Cone-Shaped Hollow Cathode on Plasma Parameters." IEEE Transactions on Plasma Science 47, no. 6 (2019): 2929–36. http://dx.doi.org/10.1109/tps.2019.2914269.

Full text

APA, Harvard, Vancouver, ISO, and other styles

19

Adamov, N. P., A. M. Kharitonov, and E. A. Chasovnikov. "Aerodynamic derivatives of a cone with a semi-apex angle 20° at supersonic velocities." Thermophysics and Aeromechanics 21, no. 6 (2014): 679–91. http://dx.doi.org/10.1134/s086986431406002x.

Full text

APA, Harvard, Vancouver, ISO, and other styles

20

Chamani, Hamid R., and Majid R. Ayatollahi. "Equivalent cone apex angle of Berkovich indenter in face-forward and edge-forward nanoscratch." Wear 356-357 (June 2016): 53–65. http://dx.doi.org/10.1016/j.wear.2016.03.005.

Full text

APA, Harvard, Vancouver, ISO, and other styles

21

Дружинин, Roman Druzhinin, Андрианов, et al. "Theoretical dependences of separation of crushed grain on perforated cone surface." Forestry Engineering Journal 3, no. 3 (2013): 164–70. http://dx.doi.org/10.12737/1782.

Full text

Abstract:

For efficient use of the product obtained in the preparation of quality mixtures we developed a design of separation device to crushed grains to fractions. An expression for the determination of the maximum speed of the particle passed through the hole of rotating conical surface is got. Analyzing this expression, it was found that the value of the marginal rate of passage of the particles is affected by the angle at the apex of the cone.

APA, Harvard, Vancouver, ISO, and other styles

22

Ivanov, Yuri D., Vadim Y. Tatur, Ivan D. Shumov, et al. "Effect of a Conical Cellulose Structure on Horseradish Peroxidase Biomacromolecules." Applied Sciences 12, no. 23 (2022): 11994. http://dx.doi.org/10.3390/app122311994.

Full text

Abstract:

The effect of a dielectric conical structure on the adsorption properties of an enzyme on mica was studied by atomic force microscopy (AFM) with the example of horseradish peroxidase (HRP). The cone used was a cellulose cone with a 60° apex angle. Namely, AFM allowed us to reveal an increase in the enzyme’s aggregation during its adsorption onto mica from the solution incubated near the cone apex for 40 min—as compared with the control enzyme samples incubated far away from the cone. In contrast, no change in the HRP adsorption properties was observed after shorter (10 min) incubation of the s

APA, Harvard, Vancouver, ISO, and other styles

23

Ali, Ashfaq, Naveed Ullah, Asim Ahmad Riaz, et al. "Development and Comparative Analysis of Electrochemically Etched Tungsten Tips for Quartz Tuning Fork Sensor." Micromachines 12, no. 3 (2021): 286. http://dx.doi.org/10.3390/mi12030286.

Full text

Abstract:

Quartz Tuning Fork (QTF) based sensors are used for Scanning Probe Microscopes (SPM), in particular for near-field scanning optical microscopy. Highly sharp Tungsten (W) tips with larger cone angles and less tip diameter are critical for SPM instead of platinum and iridium (Pt/Ir) tips due to their high-quality factor, conductivity, mechanical stability, durability and production at low cost. Tungsten is chosen for its ease of electrochemical etching, yielding high-aspect ratio, sharp tips with tens of nanometer end diameters, while using simple etching circuits and basic electrolyte chemistry

APA, Harvard, Vancouver, ISO, and other styles

24

Al-Qahwaji, Tahseen T. Othman, and Ahmad Ameen Hussain. "Numerical Study of Tube Hydroforming Process Using Conical Dies." Tikrit Journal of Engineering Sciences 28, no. 4 (2021): 25–36. http://dx.doi.org/10.25130/tjes.28.4.3.

Full text

Abstract:

In this paper the effect of die angle, fluid pressure and axial force on loading paths were studied. In order to reduce the cost and time for the experimental work, ANSYS program is used for implementing the Finite Element Method (FEM), to get optimized loading paths to form a tube using double – cones shape die. Three double die angles θ (116˚ 126˚, 136˚), with three different values of tube outer diametres (40, 45, 50) mm were used. The tube length L_o and thickness t_o for all samples were 80 mm and 2 mm respectively. The most important results and conclusions that have been reached t

APA, Harvard, Vancouver, ISO, and other styles

25

Wood, N. J., and W. J. Crowther. "Yaw control by tangential forebody blowing." Aeronautical Journal 98, no. 974 (1994): 147–54. http://dx.doi.org/10.1017/s000192400004999x.

Full text

Abstract:

Summary Aircraft yaw control at high angles of attack by tangential forebody blowing has been investigated experimentally. Tests were performed in the University of Bath 21 m x 1.5 m low speed wind tunnel using a 6% scale generic combat aircraft model fitted with blowing slots in the nose cone. Six component strain gauge balance force and moment data were measured for angles of attack up to 90° for various slot geometries and locations. The effect of slot azimuthal location is demonstrated and a slot stall phenomenon described. A geometry dependent forebody/wing flowfield coupling has been ide

APA, Harvard, Vancouver, ISO, and other styles

26

Huang, An-Bin, and Max Y. Ma. "An analytical study of cone penetration tests in granular material." Canadian Geotechnical Journal 31, no. 1 (1994): 91–103. http://dx.doi.org/10.1139/t94-010.

Full text

Abstract:

A numerical technique that couples the distinct-element and boundary-element methods was developed to simulate a granular soil deposit as a two-dimensional, circular disk assembly. A series of simulated penetration tests of a 60° apex angle cone was performed in normally consolidated and overconsolidated disk assemblies. The simulations allowed the cone penetration mechanisms to be evaluated from microscopic as well as the conventional, continuum mechanics points of view. Results show that the soil loading history can affect the characteristics of the soil failure mechanism and dilatancy. Late

APA, Harvard, Vancouver, ISO, and other styles

27

Abene, A., and V. Dubois. "Fundamental aspects of the vortex flow on cones. Angular characterization of hyperlifting vortex torques; the law of filiation." Canadian Journal of Physics 86, no. 8 (2008): 1027–31. http://dx.doi.org/10.1139/p08-018.

Full text

Abstract:

This paper describes in detail the fundamental aspects of the vortex flow developed on the upper surface of a cone having an apex angle of 68.6°. It is one of a large number of studies carried out in the wind tunnel of the Valenciennes University aerodynamics and hydrodynamics laboratory whereby visualizations have enabled the flow of vortex structures to be monitored and consequently their development and positioning, under the influence of apex angles and at increasing angles of incidence, to be determined and defined. The existence and the preferential nature of intervortex angles are here

APA, Harvard, Vancouver, ISO, and other styles

28

Iguchi, Keiichiro, Yong-Il Kim, Mohamed Adel, et al. "Association of Mandibular Posterior Anatomic Limit with Skeletal Patterns and Root Morphology Using Three-Dimensional Cone Beam Computed Tomography Comprehensive Analysis." Diagnostics 12, no. 12 (2022): 3019. http://dx.doi.org/10.3390/diagnostics12123019.

Full text

Abstract:

This study aimed to clarify the relationship between the mandibular posterior anatomic limit (MPAL) and skeletal anteroposterior and vertical skeletal patterns, with consideration of factors that may be related. In total, 230 people were included: 49 Japanese, 122 Egyptian, and 59 Korean people. The MPAL was measured at 0, 2, 4, and 6 mm from the root furcation along the sagittal and cuspal lines at the distance from the distal root of the mandibular right second molar to the mandibular cortex of the lingual bone. Eight different MPALs were evaluated using multiple regression analysis with exp

APA, Harvard, Vancouver, ISO, and other styles

29

KASHIMA, Tomoyuki, HUN DAN, Hiroki SUZUKI, and Shinsuke MOCHIZUKI. "1207 Flow field around a circular cone placed in boundary layer : Effect of apex angle." Proceedings of Conference of Chugoku-Shikoku Branch 2016.54 (2016): _1207–1_—_1207–2_. http://dx.doi.org/10.1299/jsmecs.2016.54._1207-1_.

Full text

APA, Harvard, Vancouver, ISO, and other styles

30

Abd-Elhady, Mohamed S., Camilo C. M. Rindt, and Anton A. Van Steenhoven. "Influence of the Apex Angle of Cone-Shaped Tubes on Particulate Fouling of Heat Exchangers." Heat Transfer Engineering 32, no. 3-4 (2011): 272–81. http://dx.doi.org/10.1080/01457632.2010.495622.

Full text

APA, Harvard, Vancouver, ISO, and other styles

31

Chen, Bing, and Yu Guang Fan. "3D Modeling and Open-Close Motion Simulation of the Triple Eccentric Butterfly Valve." Advanced Materials Research 215 (March 2011): 191–94. http://dx.doi.org/10.4028/www.scientific.net/amr.215.191.

Full text

Abstract:

It was achieved with the benefit of excellent molding function of CAD/CAM, to solve the designing problems of rotation center of triple eccentric butterfly valve and to improve the seal performance. The Solid Edge software is applied to analyze the process of 3D modeling and motion simulation with details, as well as check both static and dynamic interference. In this way, the reasonable eccentric angle α, cone-apex angle 2β, radial eccentricity e and axial eccentricity C of valve board are acquired. It is effective to shorten the design period of triple eccentric butterfly valve, also improve

APA, Harvard, Vancouver, ISO, and other styles

32

Chu, Seng Boon, Farah Elyna Bahdun, and Aina Qasrina Ahmad. "Anthropometric Evaluation of Labial Alveolar Bone Dimension of Maxillary Anterior Teeth in Kuantan Population: A Cone-Beam Computed Tomography Study." MARCH 2023 19, no. 2 (2023): 55–60. http://dx.doi.org/10.47836/mjmhs.19.2.10.

Full text

Abstract:

Introduction: Labial bone with adequate height and width is crucial for an implant to be successfully placed and ensure the stability of treatment outcome in the long term. The objective of this study was to employ cone-beam computed tomography (CBCT) assessment in evaluating the differences in labial alveolar bone morphology among the Kuantan population in Malaysia. Methods: A total of 60 images taken from Kulliyyah of Dentistry, International Islamic University Malaysia, between 2009 and 2019 were analysed. The root diameter, labial and palatal plate thickness, the labial bony curvature angl

APA, Harvard, Vancouver, ISO, and other styles

33

Larionov, A. N., O. I. Polivaev, V. N. Mashin, V. P. Zakusilov, and A. V. Mashina. "Kinetics of orientation processes in nematic liquid crystals in a periodically changing magnetic field." E3S Web of Conferences 402 (2023): 14001. http://dx.doi.org/10.1051/e3sconf/202340214001.

Full text

Abstract:

The method of obtaining a magnetic field, the intensity vector of which moves along a conical surface at different values of the angle between the intensity vector and the axis of rotation of the magnetic field, the values of the intensity and angular velocity of rotation of the magnetic field, is described. An increase in the phase shift between the intensity vector and the director is found with an increase in the angle at the apex of the magnetic field cone. In the studied range of angular velocities of rotation of the magnetic field at angles between the intensity vector and the axis of ro

APA, Harvard, Vancouver, ISO, and other styles

34

Arani, Ali Ghorbanpour, and Reza Kolahchi. "Nonlinear vibration and instability of embedded double-walled carbon nanocones based on nonlocal Timoshenko beam theory." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 228, no. 4 (2013): 690–702. http://dx.doi.org/10.1177/0954406213490128.

Full text

Abstract:

Nonlinear vibration and instability of embedded double-walled carbon nanocones subjected to axial load are investigated in this article based on Eringen's nonlocal theory and Timoshenko beam model. The elastic medium is simulated as Pasternak foundation and the van der Waals forces between the inner and the outer layers of double-walled carbon nanocones are taken into account. Using von Kármán geometric nonlinearity, energy method and Hamilton’s principle, the nonlocal nonlinear motion equations are obtained. The differential quadrature method is applied to discretize the motion equations, whi

APA, Harvard, Vancouver, ISO, and other styles

35

Pullepu, B., E. Ekambavanan, and A. J. Chamkha. "Unsteady Laminar Natural Convection from a Non-Isothermal Vertical Cone." Nonlinear Analysis: Modelling and Control 12, no. 4 (2007): 525–40. http://dx.doi.org/10.15388/na.2007.12.4.14684.

Full text

Abstract:

Natural convection effects of the numerical solution for unsteady, laminar, free convection flow over an incompressible viscous fluid past a non-isothermal vertical cone with surface temperature T′w(x) = T′∞ + axn varying as power function of distance from the apex (x = 0) is presented here. The dimensionless governing equations of the flow that are unsteady, coupled and non-linear partial differential equations are solved by an efficient, accurate and unconditionally stable finite difference scheme of Crank-Nicolson type. The velocity and temperature fields have been studied for various param

APA, Harvard, Vancouver, ISO, and other styles

36

Олешко, В. И., та V. V. Nguyen. "Исследование параметров самосфокусированного электронного пучка, выведенного за анод вакуумного диода". Письма в журнал технической физики 48, № 4 (2022): 3. http://dx.doi.org/10.21883/pjtf.2022.04.52075.19053.

Full text

Abstract:

The parameters of a high-current electron beam extracted from the self-focusing zone through a hole in the anode into a vacuum chamber are investigated. The beam parameters were determined from the measurement of the spatial distribution of destruction and glow arising in polymethyl methacrylate samples installed at different distances from the anode (electron beam autographs). The formation of two electron beams - a self-focused with a high energy density, propagating along the axis of the cone facing the base to the anode with an apex angle of ~ 7º and a high-energy beam of low density, prop

APA, Harvard, Vancouver, ISO, and other styles

37

Lu, Cai-Lian, Bo-Wen Li, Mi Yang, and Xiao-Qin Wang. "Relationship between alveolar-bone morphology at the mandibular incisors and their inclination in adults with low-angle, skeletal class III malocclusion—A retrospective CBCT study." PLOS ONE 17, no. 3 (2022): e0264788. http://dx.doi.org/10.1371/journal.pone.0264788.

Full text

Abstract:

Objective To quantitatively study the effect of the labial inclination of the mandibular central incisors on the surrounding cortical and cancellous-bone morphology among patients with low-angle, skeletal class III malocclusion, by using cone-beam computed-tomography (CBCT) imaging. Materials and methods The CBCT images of 60 patients with low-angle, skeletal class III malocclusion were divided into lingual-inclination, upright, and labial-inclination groups. The height of the alveolar bone and the thickness and area of the cortical, cancellous, and total alveolar bone were measured separately

APA, Harvard, Vancouver, ISO, and other styles

38

Pandey, Satyanand, and Lakhbir Singh Brar. "The Impact of Increasing the Length of the Conical Segment on Cyclone Performance Using Large-Eddy Simulation." Symmetry 15, no. 3 (2023): 682. http://dx.doi.org/10.3390/sym15030682.

Full text

Abstract:

In cyclone separators, the asymmetrical coherent structure significantly influences the velocity fluctuations and hence the cyclone performance. This asymmetric rotating vortex in the core region precesses around the cyclone axis with a frequency that depends on the cyclone geometry and operating conditions. In the present work, we studied the impact of increasing the length of the conical segment on the performance of cyclone separators as well as the precessing frequency of the asymmetrical structure. For this, five different cone lengths were considered such that the total cyclone length eq

APA, Harvard, Vancouver, ISO, and other styles

39

Kulnitskiy, Boris A., Igor A. Perezhogin, Dmitriy V. Batov, Vladimir D. Blank, and Yuriy L. Alshevskiy. "High resolution transmission electron microscopy analysis of conical carbon nanotubes formed in the high isostatic pressure apparatus." Image Journal of Advanced Materials and Technologies 6, no. 1 (2021): 10–21. http://dx.doi.org/10.17277/jamt.2021.01.pp.010-017.

Full text

Abstract:

Carbon nanotubes with “herringbone” layers structure synthesized in high isostatic pressure apparatus were studied by High Resolution Transmission Electron Microscopy (HRTEM) methods. Seven different values of semi-apex angles of graphene layers were observed in different nanotubes. It is shown that semi-apex angles approximately equal to 5, 15, 25 и 35 can be regarded only to the scroll structure of the nanotubes, while 10, 20 and 30 can be regarded to both scroll either nested graphene layers curved to cones due to the embedding of the pentagon’s to them. Thus, the observation of all

APA, Harvard, Vancouver, ISO, and other styles

40

Lim, You Na, Byoung-Eun Yang, Soo-Hwan Byun, Sang-Min Yi, Sung-Woon On, and In-Young Park. "Three-Dimensional Digital Image Analysis of Skeletal and Soft Tissue Points A and B after Orthodontic Treatment with Premolar Extraction in Bimaxillary Protrusive Patients." Biology 11, no. 3 (2022): 381. http://dx.doi.org/10.3390/biology11030381.

Full text

Abstract:

Aim. To investigate the effect of changes in incisor tip, apex movement, and inclination on skeletal points A and B and characterize changes in skeletal points A and B to the soft tissue points A and B after incisor retraction in Angle Class I bimaxillary dentoalveolar protrusion. Methods. Twenty-two patients with Angle Class I bimaxillary dentoalveolar protrusion treated with four first premolar extractions were included in this study. The displacement of skeletal and soft tissue points A and B was measured using cone-beam computed tomography (CBCT) using a three-dimensional coordinate system

APA, Harvard, Vancouver, ISO, and other styles

41

Plonski, Patrick A., and Volkan Isler. "Approximation algorithms for tours of height-varying view cones." International Journal of Robotics Research 38, no. 2-3 (2018): 224–35. http://dx.doi.org/10.1177/0278364918784353.

Full text

Abstract:

We introduce a novel coverage problem that arises in aerial surveying applications. The goal is to compute a shortest path that visits a given set of cones. The apex of each cone is restricted to lie on the ground plane. The common angle [Formula: see text] of the cones represent the field of view of the onboard camera. The cone heights, which can be varying, correspond with the desired observation quality (e.g. resolution). This problem is a novel variant of the traveling salesman problem with neighborhoods (TSPN). We name it Cone-TSPN. Our main contribution is a polynomial time approximation

APA, Harvard, Vancouver, ISO, and other styles

42

KAMEDA, Takatsugu, Shinsuke MOCHIZUKI, and Hideo OSAKA. "Flow around a Cone in a Thin Boundary Layer (Variation of the Surface Pressure for an Apex Angle)." TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series B 77, no. 775 (2011): 761–70. http://dx.doi.org/10.1299/kikaib.77.761.

Full text

APA, Harvard, Vancouver, ISO, and other styles

43

MAHDY, A., and H. M. ELSHEHABEY. "GYROTACTIC MICROORGANISMS FREE CONVECTION BOUNDARY LAYER FLOW ABOUT A VERTICAL TRUNCATED CONE IN NANOFLUID POROUS MEDIA." Latin American Applied Research - An international journal 48, no. 1 (2019): 57–62. http://dx.doi.org/10.52292/j.laar.2018.259.

Full text

Abstract:

A non-similar boundary layer analysis is presented to examine the natural convection flow over a truncated cone with fixed apex half angle; pointing downwards in a nanofluid saturated porous medium contains gyrotactic microorganisms. A suitable coordinate transformation is performed, and the obtained non-similar equations are solved by fourth order Runge–Kutta method technique coupled with shooting scheme. The effects of the thermophoresis parameter, Brownian parameter, Lewis number, bioconvection Peclet number, bioconvection Lewis number, bioconvection Rayleigh number and buoyancy ratio on th

APA, Harvard, Vancouver, ISO, and other styles

44

Tu, Kyaw L., Abdo K. Tourkmani, and Singaram Srinivas. "Keratoconic Cone using its Keratometry, Decentration, and Thickness as Staging Parameters." International Journal of Keratoconus and Ectatic Corneal Diseases 5, no. 3 (2016): 99–104. http://dx.doi.org/10.5005/jp-journals-10025-1129.

Full text

Abstract:

ABSTRACT Aim To propose a new system of keratoconus staging using a set of parameters describing the keratoconic cone. Materials and methods Retrospective case series study of 101 keratoconic eyes of 58 patients was undertaken. They all had complete eye examination including corneal topography (Oculus Pentacam). Kmean, Kmax, higher order aberrations (HOAs) root mean square (HOARMS) value, pachymetry at thinnest point and steepest corneal meridian were obtained from Pentacam. Apex to thinnest pachymetry distance (D) was calculated using trigonometry. Pearson correlation coefficients between Kma

APA, Harvard, Vancouver, ISO, and other styles

45

Oleshko V.I. and Nguyen V. V. "Investigation of the parameters of a self-focused electron beam outputted behind the anode of a vacuum diode." Technical Physics Letters 48, no. 2 (2022): 47. http://dx.doi.org/10.21883/tpl.2022.02.53580.19053.

Full text

Abstract:

The parameters of a high-current electron beam extracted from the self-focusing zone through a hole in the anode into a vacuum chamber are investigated. The beam parameters were determined from the measurement of the spatial distribution of destruction and glow arising in polymethyl methacrylate samples installed at different distances from the anode (electron beam autographs). The formation of two electron beams --- a self-focused with a high energy density, propagating along the axis of the cone facing the base to the anode with an apex angle of ~ 7o and a high-energy beam of low density, pr

APA, Harvard, Vancouver, ISO, and other styles

46

Cox, Barry, and James Hill. "Carbon Nanocones with Curvature Effects Close to the Vertex." Nanomaterials 8, no. 8 (2018): 624. http://dx.doi.org/10.3390/nano8080624.

Full text

Abstract:

The conventional rolled-up model for carbon nanocones assumes that the cone is constructed from a rolled-up graphene sheet joined seamlessly, which predicts five distinct vertex angles. This model completely ignores any effects due to the changing curvature, and all bond lengths and bond angles are assumed to be those for the planar graphene sheet. Clearly, curvature effects will become more important closest to the cone vertex, and especially so for the cones with the smaller apex angles. Here, we construct carbon nanocones which, in the assembled cone, are assumed to comprise bond lengths an

APA, Harvard, Vancouver, ISO, and other styles

47

Mushtaq, Nasir, Syeda Shamal, Nayab Hassan, Jawad Ullah Shah, and Haider Ali. "Comparison of Prognostic Indicators of Maxillary Impacted Canine using OPG (Orthopantomogram) with CBCT (Cone Beam Computed Tomography)." Journal of Gandhara Medical and Dental Science 9, no. 2 (2022): 23–28. http://dx.doi.org/10.37762/jgmds.9-2.279.

Full text

Abstract:

OBJECTIVES: The aim of the present study was to compare OPG (orthopantomogram) in locating impacted canines with CBCT (cone beam computed tomography) scans of the same patients. METHODOLOGY: The cross-sectional study was carried out on the OPG (orthopantomogram) and CBCT (Cone-Beam Computed Tomography) of 27 patients (17 females and 10 males) presenting with impacted permanent maxillary canines. Thirty-five impacted canines were subsequently assessed on the four guidelines devised by McSherry and Pitt and applied to the panoramic films and CBCT scans. RESULTS: The results show weak agreement f

APA, Harvard, Vancouver, ISO, and other styles

48

Шалаев, O. Shalaev, Некрылов, D. Nekrylov, Селина, and Olesya Selina. "The analysis of treatment results of chronic apical periodontitis." Journal of New Medical Technologies. eJournal 8, no. 1 (2014): 1–4. http://dx.doi.org/10.12737/4797.

Full text

Abstract:

Forms of chronic periodontitis, treatment results and long-term results are traditionally defined on the basis of X-ray examination. Today, the most modern and reliable method for diagnostic X-ray examination opportunities in dentistry is dental cone-beam computed tomography. In comparison with other methods of X-ray examination in dentistry the method of dental cone-beam computed tomography has a number of advantages: the ability to make measurements of distances, the density of solid tissue, angles and areas in any part of the data at any angle, at any height, length, width up to 0,125 mm du

APA, Harvard, Vancouver, ISO, and other styles

49

KAMEDA, Takatsugu, Tetsuya SUMIDA, Shinsuke MOCHIZUKI, and Hideo Osaka. "G703 Flow around a Cone placed in a Thin Turbulent Boundary Layer : Variation of a Pressure Distribution on the Surface to the Apex Angle of a Cone." Proceedings of the Fluids engineering conference 2009 (2009): 601–2. http://dx.doi.org/10.1299/jsmefed.2009.601.

Full text

APA, Harvard, Vancouver, ISO, and other styles

50

SAHARIAN, A. A. "FERMIONIC CONDENSATE AND INDUCED CURRENT IN A CONICAL SPACE WITH A CIRCULAR BOUNDARY AND MAGNETIC FLUX." International Journal of Modern Physics: Conference Series 14 (January 2012): 496–500. http://dx.doi.org/10.1142/s2010194512007623.

Full text

Abstract:

The fermionic condensate and current density are investigated in a (2 + 1)-dimensional conical spacetime in the presence of a circular boundary and a magnetic flux. On the boundary the fermionic field obeys the MIT bag boundary condition. For irregular modes, we consider a special case of boundary conditions at the cone apex, when the MIT bag boundary condition is imposed at a finite radius, which is then taken to zero. The condensate and current are periodic functions of the magnetic flux with the period equal to the flux quantum. For both exterior and interior regions, the expectation values

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!