scholarly journals Design, Manufacturing, Validation of a Multi-Orientation Tilt Test Bench for Testing Vehicles Rollover and Tests of ATV-Quad for Agricultural Applications

2021 ◽  
Vol 11 (6) ◽  
pp. 2575
Author(s):  
Julen Bacaicoa ◽  
Tomás Ballesteros ◽  
Ignacio Arana ◽  
Jokin Aginaga ◽  
Juan-Ignacio Latorre-Biel
Keyword(s):  
Tilt Angle ◽  
Test Bench ◽  
Fuel Tank ◽  
Protection System ◽  
Tilt Test ◽  
Appropriate Use ◽  
Multiple Tests ◽  
Mechanical Structure ◽  
Agricultural Applications ◽  
Safety Belts

A rollover test bench has been designed, manufactured, and validated for analyzing the all-terrain vehicle (ATV)-Quad overturn of diverse vehicles in different configurations, such as installing a rollover protection system (ROPS), considering drivers of different physical constitutions, the appropriate use of safety belts, or having a full or empty fuel tank. The main purpose of this research is to determine the tilt angle of the vehicle that triggers the ATV-Quad overturn. The scope of the design and development of the newly conceived bench include the mechanical structure, the electronics and the control. It can simulate static and dynamic rollover in different directions. As a main conclusion, it can be stated that the performance of the test bench was successful, since it allowed for the development of several ATV models, equipped with different dummies, in a variety of configurations. In particular, it was possible to assess the effectivity of the AD-ROPS system (automatically deployed ROPS), regarding the protection of the driver of the vehicle. Moreover, multiple tests, performed with diverse ATV-Quads in the developed bench and in different configurations, have been reported and their results discussed.

Evaluation of Material Characteristics of Fuel Tank Material Utilized For Agricultural Applications with Biofuels

2018 ◽  
Vol 5 (5) ◽  
pp. 13682-13686
Author(s):  
Durga Prasad ◽  
Akash R Reddy ◽  
A.S.S. Balan ◽  
J. Joel ◽  
J. Thangaraja
Keyword(s):  
Fuel Tank ◽  
Material Characteristics ◽  
Agricultural Applications

scholarly journals Preflight and Flight Instructions on the Use of Unmanned Aerial Vehicles (UAVs) for Agricultural Applications

EDIS ◽  
2019 ◽  
Vol 2019 (6) ◽  
pp. 5
Author(s):  
Sri Charan Kakarla ◽  
Leon De Morais Nunes ◽  
Yiannis Ampatzidis
Keyword(s):  
Unmanned Aerial Vehicles ◽  
Mission Planning ◽  
Biological Engineering ◽  
Appropriate Use ◽  
Aerial Vehicles ◽  
Agricultural Applications

This 5-page document provides guidance on the appropriate use of unmanned aerial vehicles (UAVs) for agricultural applications in Florida. It contains step-by-step instructions for preparing a UAV for flight, creating a mission path (using flight mission planning apps), and collecting UAV-based data. Written by Sri Charan Kakarla, Leon De Morais Nunes, and Yiannis Ampatzidis, and published by the UF/IFAS Department of Agricultural and Biological Engineering, November 2019.

Tilt angles and positive response of head-up tilt test in children with orthostatic intolerance

2013 ◽  
Vol 25 (1) ◽  
pp. 76-80 ◽  
Author(s):  
Jing Lin ◽  
Yuli Wang ◽  
Todd Ochs ◽  
Chaoshu Tang ◽  
Junbao Du ◽  
...  
Keyword(s):  
Tilt Angle ◽  
Positive Response ◽  
Orthostatic Intolerance ◽  
Vasovagal Syncope ◽  
Tilt Test ◽  
Postural Orthostatic Tachycardia Syndrome ◽  
Appearance Time ◽  
Significant Difference ◽  
Head Up Tilt ◽  
Head Up Tilt Test

AbstractThis study aimed at examining three tilt angle-based positive responses and the time to positive response in a head-up tilt test for children with orthostatic intolerance, and the psychological fear experienced at the three angles during head-up tilt test. A total of 174 children, including 76 boys and 98 girls, aged from 4 to 18 years old (mean 11.3±2.8 years old), with unexplained syncope, were randomly divided into three groups, to undergo head-up tilt test at the angles of 60°, 70° and 80°, respectively. The diagnostic rates and times were analysed, and Wong–Baker face pain rating scale was used to access the children’s psychological fear. There were no significant differences in diagnostic rates of postural orthostatic tachycardia syndrome and vasovagal syncope at different tilt angles during the head-up tilt test (p>0.05). There was a significant difference, however, in the psychological fear at different tilt angles utilising the Kruskal–Wallis test (χ2=36.398, p<0.01). It was mildest at tilt angle 60° utilising the Kolmogorov–Smirnov test (p<0.01). A positive rank correlation was found between the psychological fear and the degree of tilt angle (rs=0.445, p<0.01). Positive response appearance time was 15.1±14.0 minutes at 60° for vasovagal syncope children. There was no significant difference in the time to positive response, at different tilt angles during the head-up tilt test for vasovagal syncope or for postural orthostatic tachycardia syndrome. Hence, it is suggested that a tilt angle of 60° and head-up tilt test time of 45 minutes should be suitable for children with vasovagal syncope.

scholarly journals Comparison between Absorbable and Nonabsorbable Suture Material in Modified Broström Operation

2017 ◽  
Vol 2 (3) ◽  
pp. 2473011417S0002
Author(s):  
Chan Kang ◽  
Donghun Kang ◽  
Jaehwang Song ◽  
Chang-Kyun Noh ◽  
Ki-Jun Ahn ◽  
...  
Keyword(s):  
Tilt Angle ◽  
Suture Material ◽  
Ankle Instability ◽  
Tilt Test ◽  
Absorbable Suture ◽  
Lateral Ankle ◽  
Lateral Ankle Instability ◽  
Suture Group ◽  
Talar Tilt

Category: Ankle, Trauma Introduction/Purpose: The current clinical standard for the surgical treatment of lateral ankle instability remains the modified Broström procedure. Almost surgeons are using non-absorbable suture material because of their strength & permanent. But this has several complications such as irritation, surface tenderness, etc. So we compare the clinical result between nonabsorbable and absorbable suture material. Methods: All patients who underwent the modified Broström operation of the anterior talofibular ligament and/or the calcaneofibular ligament by a single surgeon between July 2011 and May 2015 were included in this study. A total of 96 patients were included in this study: 63 men and 33 women (mean age, 33.16 years; range, 14-72 years). Non-absorbable suture(2-0 Fiberwire®, Arthrex, Naples, FL) patient were 50 (33 men, 17 women) and absorbable suture(0-Vicryl®, Ethicon, Sommerville, NJ) patient were 46(30 men, 16 women). Mean follow-up duration was 2.5 years (range, 1.0-4.7 years). Patients completed a subjective questionnaire. Outcomes measures included the Foot and Ankle Disability Index (FADI), American Orthopaedic Foot and Ankle Society (AOFAS) and Reoperation cases by the recurred lateral ankle instability. All data were collected prospectively and reviewed retrospectively. Results: In non-absorbable suture group, The mean talar tilt angle in preoperative talar tilt test was 14.4 and in absorbable suture group, 13.7, respectively. The mean talar tilt angle in postoperative talar tilt test was 5.3 and in absorbable suture group, 6.1, respectively. There were no significant differences between non-absorbable suture method and absorbable suture method with talar tilt angle in varus stress x-ray (P > .05). There was no significant difference in FADI (87 vs 91; P = .553), AOFAS (83 vs 87; P = .372) score between non-absorable suture method group and the absorbable suture method group. During follow up, Except of 2 patients, they were no clinical symptom. Each one patient in non-absorbable and absorbable suture group underwent revision lateral ligament surgery. Conclusion: As compared with non-absorbable suture in open modified Broström procedure, absorbable suture method produced similarly favorable outcomes.

Designing and Prototyping Surveillance Robot with Self-Protection Using Nail Gun

2014 ◽  
Vol 493 ◽  
pp. 401-407 ◽  
Author(s):  
Novandri Sebastian ◽  
Erwin ◽  
Erny Listijorini ◽  
Dwinanto
Keyword(s):  
Radio Frequency ◽  
Tilt Angle ◽  
Target Object ◽  
Protection System ◽  
Effective Control ◽  
Test Results ◽  
Wireless System ◽  
Protection Mechanism ◽  
Self Protection ◽  
System Frequency

Designing and manufacturing / prototyping surveillance robot that has self-protection mechanism by using nail gun with VDI (Association of German Engineers) method, aims to design and create a robot that capable to conduct reconnaissance missions and protect themselves as well as immobilize the target object. The prototype robot is able to send data in the form of audio and visual through Wireless system by using Wi-Fi (Wireless Fidelity). The robot is equipped with self-protection system such as nail gun that can move in rotation and elevation, it is such an effective weapon to paralyze the targets objects if necessary. This robot is designed to maneuver on the field that has tilt angle up to 30o. Based on the test results, the robot is able to maneuver with speed 2.88 km/h on duration more than 30 minutes and be able to pass the field angle of 35o. Proximity sensors which are used as indicators of arm robots position works well on the pitch and yaw motion. Security system that is designed to shoot also works well. The most effective control radio frequency used is 2.4 GHz and the data sender system frequency is 5.8 GHz.

The dislocation structure of a 10° [110] tilt boundary in silicon

1983 ◽  
Vol 41 ◽  
pp. 114-115
Author(s):  
B. Cunningham ◽  
D.G. Ast
Keyword(s):  
Dislocation Structure ◽  
Tilt Angle ◽  
Imaging Technique ◽  
Diamond Lattice ◽  
Tilt Boundary ◽  
Formation Mechanisms ◽  
Diffraction Contrast ◽  
Lattice Fringe ◽  
Tilt Boundaries ◽  
Chemically Vapor Deposited

There have Been a number of studies of low-angle, θ < 4°, [10] tilt boundaries in the diamond lattice. Dislocations with Burgers vectors a/2<110>, a/2<112>, a<111> and a<001> have been reported in melt-grown bicrystals of germanium, and dislocations with Burgers vectors a<001> and a/2<112> have been reported in hot-pressed bicrystals of silicon. Most of the dislocations were found to be dissociated, the dissociation widths being dependent on the tilt angle. Possible dissociation schemes and formation mechanisms for the a<001> and a<111> dislocations from the interaction of lattice dislocations have recently been given.The present study reports on the dislocation structure of a 10° [10] tilt boundary in chemically vapor deposited silicon. The dislocations in the boundary were spaced about 1-3nm apart, making them difficult to resolve by conventional diffraction contrast techniques. The dislocation structure was therefore studied by the lattice-fringe imaging technique.

A High Angle, Double Tilting Cold Stage for the AEI EM7

1974 ◽  
Vol 32 ◽  
pp. 450-451
Author(s):  
P.R. Swann ◽  
A.E. Lloyd
Keyword(s):  
Habit Plane ◽  
Temperature Control ◽  
Tilt Angle ◽  
Cooling System ◽  
Thermal Drift ◽  
High Angle ◽  
Cold Stage ◽  
High Degree ◽  
Better Than

Figure 1 shows the design of a specimen stage used for the in situ observation of phase transformations in the temperature range between ambient and −160°C. The design has the following features a high degree of specimen stability during tilting linear tilt actuation about two orthogonal axes for accurate control of tilt angle read-out high angle tilt range for stereo work and habit plane determination simple, robust construction temperature control of better than ±0.5°C minimum thermal drift and transmission of vibration from the cooling system.

The use of a Bent Grid to Improve the take-Off Angle for Electron Probe Analysis

1976 ◽  
Vol 34 ◽  
pp. 360-361
Author(s):  
Delbert E. Philpott ◽  
David Leaffer
Keyword(s):  
Quantitative Analysis ◽  
Tilt Angle ◽  
Count Rate ◽  
Electron Probe ◽  
Open Area ◽  
Electron Probe Analysis ◽  
Background Ratio ◽  
Probe Analysis

There are certain advantages for electron probe analysis if the sample can be tilted directly towards the detector. The count rate is higher, it optimizes the geometry since only one angle need be taken into account for quantitative analysis and the signal to background ratio is improved. The need for less tilt angle may be an advantage because the grid bars are not moved quite as close to each other, leaving a little more open area for observation. Our present detector (EDAX) and microscope (Philips 300) combination precludes moving the detector behind the microscope where it would point directly at the grid. Therefore, the angle of the specimen was changed in order to optimize the geometry between the specimen and the detector.

Methods for three-dimensional reconstruction of cellular components within a thick section

1986 ◽  
Vol 44 ◽  
pp. 18-21
Author(s):  
J. Frank ◽  
B. F. McEwen ◽  
M. Radermacher ◽  
C. L. Rieder
Keyword(s):  
Tilt Angle ◽  
Tomographic Reconstruction ◽  
3D Structure ◽  
Three Dimensional ◽  
Thick Section ◽  
Three Dimensional Reconstruction ◽  
Axis Ratio ◽  
Dimensional Reconstruction ◽  
Cellular Components

The tomographic reconstruction from multiple projections of cellular components, within a thick section, offers a way of visualizing and quantifying their three-dimensional (3D) structure. However, asymmetric objects require as many views from the widest tilt range as possible; otherwise the reconstruction may be uninterpretable. Even if not for geometric obstructions, the increasing pathway of electrons, as the tilt angle is increased, poses the ultimate upper limitation to the projection range. With the maximum tilt angle being fixed, the only way to improve the faithfulness of the reconstruction is by changing the mode of the tilting from single-axis to conical; a point within the object projected with a tilt angle of 60° and a full 360° azimuthal range is then reconstructed as a slightly elliptic (axis ratio 1.2 : 1) sphere.

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