Trunk Shakers for Citrus Harvesting—Part I: Measured Trunk Shaker and Tree Trunk Motion

1988 ◽  
Vol 4 (2) ◽  
pp. 93-101 ◽  
Author(s):  
Jodie D. Whitney ◽  
Donald B. Churchill ◽  
Scott L. Hedden ◽  
Glen H. Smerage
Keyword(s):  
Tree Trunk ◽  
Trunk Motion ◽  
Citrus Harvesting

scholarly journals A Comparative Study on the Microbial Communities of Rhynchophorus ferrugineus (Red Palm Weevil)-Infected and Healthy Palm Trees

2021 ◽  
Author(s):  
N. Alshammari ◽  
Meshari Alazmi ◽  
Naimah A. Alanazi ◽  
Abdel Moneim E. Sulieman ◽  
Vajid N. Veettil ◽  
...  
Keyword(s):  
Microbial Communities ◽  
16S Rrna Gene Sequencing ◽  
Rrna Gene ◽  
Rhynchophorus Ferrugineus ◽  
Tree Trunk ◽  
Red Palm Weevil ◽  
Healthy Tree ◽  
Palm Trees ◽  
Infected Tree ◽  
Palm Weevil

AbstractSeveral studies have investigated palm trees’ microbiota infected with red palm weevil (RPW) (Rhynchophorus ferrugineus), the major pest of palm trees. This study compared the microbial communities of infected and uninfected palm trees in the Hail region, Northern Saudi Arabia, determined by high-throughput 16S rRNA gene sequencing by Illumina MiSeq. The results indicated that taxonomic diversity variation was higher for infected tree trunk than the healthy tree trunk. Soil samples from the vicinity of healthy and infected trees did not have a significant variation in bacterial diversity. Myxococcota, Acidobacteriota, and Firmicutes were the dominant phyla in RPW-infected tree trunk, and Pseudomonadaceae was the most prominent family. This study is the first report on the characterization of RPW-infected and healthy palm trees’ microbiome.

scholarly journals Motor Adaptation to Cognitive Challenges and Destabilizing Treadmill Walking in Healthy Older Adults

2020 ◽  
Vol 4 (Supplement_1) ◽  
pp. 523-523
Author(s):  
Pei-Chun Kao ◽  
Michaela Pierro
Keyword(s):  
Older Adults ◽  
Cognitive Task ◽  
Daily Lives ◽  
Healthy Older Adults ◽  
Trunk Motion ◽  
Visual Color ◽  
Stability Data ◽  
Serial Addition ◽  
Task Conditions ◽  
Perturbed Walking

Abstract To develop effective fall prevention intervention, it is necessary to understand how older adults respond to challenges that demand cognitive-motor dual-tasking capability, an important capability in the daily lives. The purpose of this study is to investigate how older adults adjust their motor responses when encountering cognitive and walking perturbations simultaneously. We recorded kinematic data as subjects walked on a treadmill with or without 1) continuous random-amplitude treadmill platform sways (Perturbed vs. No-perturbed walking); and 2) each of the four cognitive tasks: Paced Auditory Serial Addition test (PASAT), clock test, visual color-word incongruent test (V-stroop), and auditory pitch-word incongruent test (A-stroop). We computed dynamic margins of stability (MOS), gait variability, and short-term local divergence exponent (LDE) of the trunk motion (local stability). Data of ten older subjects (age: 72.2±4.9) show that cognitive performance did not differ between standing, Perturbed or No-perturbed walking. Subjects demonstrated significantly greater local instability and variability in step measures, joint angle and MOS during Perturbed than No-perturbed walking (p<0.001). During dual-task conditions, subjects walked with significantly larger medio-lateral MOS (MOSML) compared to walking only, especially during early phase of the trial. During Perturbed walking, subjects had significantly larger MOSML during PASAT and Vstroop than walking only. Our data showed that subjects tried to increase their dynamic MOS during Perturbed walking or a cognitive task more difficult or taxing visual attention. However, the adjustments do not sustain throughout the trial. These findings suggest older adults tend to prioritize cognitive over walking tasks even when encountering walking perturbations.

Sap flow and daily electric potential variations in a tree trunk

Plant Science ◽  
2006 ◽  
Vol 171 (5) ◽  
pp. 572-584 ◽  
Author(s):  
Dominique Gibert ◽  
Jean-Louis Le Mouël ◽  
Luc Lambs ◽  
Florence Nicollin ◽  
Frédéric Perrier
Keyword(s):  
Electric Potential ◽  
Sap Flow ◽  
Tree Trunk

Relationship between Hip Strength and Trunk Motion in College Cross-Country Runners

2013 ◽  
Vol 45 (6) ◽  
pp. 1125-1130 ◽  
Author(s):  
KEVIN R. FORD ◽  
JEFFERY A. TAYLOR-HAAS ◽  
KATLIN GENTHE ◽  
JASON HUGENTOBLER
Keyword(s):  
Hip Strength ◽  
Trunk Motion ◽  
Cross Country ◽  
Cross Country Runners

Evaluation of an Arm Support With Trunk Motion Capability

2016 ◽  
Vol 10 (4) ◽  
Author(s):  
A. G. Dunning ◽  
M. M. H. P. Janssen ◽  
P. N. Kooren ◽  
J. L. Herder
Keyword(s):  
Range Of Motion ◽  
Daily Living ◽  
Loss Of Function ◽  
Semg Signal ◽  
Trunk Motion ◽  
Robotic Exoskeleton ◽  
Progressive Muscle Weakness ◽  
Trunk Movements ◽  
Arm Support ◽  
Arm Muscles

Due to progressive muscle weakness, the arm function in boys with Duchenne muscular dystrophy (DMD) reduces. An arm support can compensate for this loss of function. Existing arm supports are wheelchair bound, which restricts the ability to perform trunk movements. To evaluate the function of a body-bound arm support, a prototype (based on the Wilmington robotic exoskeleton (WREX) arm support) that allows trunk movements was built. In order to examine the effect of this device and to compare it with an existing wheelchair-bound device, three healthy subjects performed single joint movements (SJMs) and activities of daily living (ADL) with and without the devices. The range of motion (RoM) of the arm and the surface electromyography (sEMG) signal of five different arm muscles were measured. The range of motion increased when compared to the wheelchair-bound device, and the trunk motion was perceived as important to make specific movements easier and more natural, especially the more extreme movements like reaching for a far object and reaching to the top of the head. The sEMG signal was comparable to that of the wheelchair-bound device. This means that an arm support with trunk motion capability can increase the range of motion of the user, while the amount of support to the arm is equal.

A Deep Learning-based Approach for Tree Trunk Segmentation

2021 ◽  
Author(s):  
Danilo Samuel Jodas ◽  
Sergio Brazolin ◽  
Takashi Yojo ◽  
Reinaldo Araujo de Lima ◽  
Giuliana Del Nero Velasco ◽  
...  
Keyword(s):  
Deep Learning ◽  
Tree Trunk

Mathematical Modelling of Deciduous Tree Ignition by Ground Lightning Discharge Taking into Account Localization of Reactive Wood

2011 ◽  
Vol 6 (4) ◽  
pp. 95-106
Author(s):  
Nikolay Baranovskiy ◽  
Geniy Kuznetsov
Keyword(s):  
Heat Transfer ◽  
Numerical Simulation ◽  
Mathematical Modelling ◽  
Lightning Discharge ◽  
Deciduous Tree ◽  
Tree Trunk ◽  
Mathematical Statement ◽  
Cylindrical System ◽  
Typical Range

Physical and mathematical statement and results of the numerical simulation of a problem about deciduous tree (birch) ignition by ground lightning discharge are presented. The problem is considered in flat statement in cylindrical system of coordinates. Heat transfer features taking into account localization of reactive wood are considered. The parametrical analysis is carried out and conditions of tree trunk ignition in a typical range of parameters of influence of positive discharges are obtained

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