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Artykuły w czasopismach na temat „Lifting and carrying”

Autor: Grafiati

Data publikacji: 4 czerwca 2021

Data aktualizacji: 25 lipca 2024

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1

Purwaningrum, Lu’lu’, Kyotaro Funatsu, Cucuk Nur Rosyidi, and Satoshi Muraki. "Considering Children’s Methods of Grasping and Carrying Elementary School Chairs for Easy Carrying, Lifting, and Turning." SAGE Open 7, no. 1 (January 2017): 215824401667803. http://dx.doi.org/10.1177/2158244016678037.

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Carrying, lifting, and turning chairs improve learning activities in schools, which leads to higher quality education. However, it has been shown that elementary school chairs in Indonesia are too heavy for children aged 6 to 9 to easily lift and carry. The present study aimed to investigate children’s methods of carrying chairs as well as lifting and turning them onto desks. Forty-two children (aged 6-9), including 17 Indonesians (6 boys, 11 girls) and 25 Japanese (12 boys, 13 girls), participated in the study. The experiment used three elementary school chairs (one Indonesian, two Japanese)

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Johnson, Steven L., and David M. Lewis. "A Psychophysical Study of Two-Person Manual Material Handling Tasks." Proceedings of the Human Factors Society Annual Meeting 33, no. 11 (October 1989): 651–53. http://dx.doi.org/10.1177/154193128903301105.

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Over the past ten years, there has been extensive work performed on the development of guidelines for manual material handling tasks both within individual companies and within governmental agencies. However, these guidelines address only individual, one-person lifting tasks. In both manufacturing and service industries, there are many team lifting tasks, such as furniture moving and at loading docks. This paper presents the results of a study that used psychophysical methods to investigate lifting tasks that require two workers. In addition to simple lifting tasks, the study also compared one

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Agustina, Fitri, Nachnul Ansori, Trisita Novianti, Ernaning Widiaswanti, and Ravida Ayu Anggraeni. "Risk Evaluation of Musculoskeletal Disorders and Design of Lifting-carrying Facilities." PROZIMA (Productivity, Optimization and Manufacturing System Engineering) 7, no. 1 (March 24, 2023): 1–10. http://dx.doi.org/10.21070/prozima.v7i1.1605.

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There are main activities of the worker in UD Askan such as splitting the fish, carrying, and lifting the tubs. Work activities are done manually and the production process continually undergoes. The frequency of activity (15 cycles) in a day causes the risk of fatigue, injury, and Musculoskeletal Disorders (MSDs). Evaluation of the work posture of four workers by Ovako Working Posture Analysis System (OWAS) and Job Strain Index (JSI) methods showed high risk in the process of lifting and carrying a tank. The previous posture caused the worker to bend forward, both legs standing or squatting w

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Kadam, Shivam, Piyush Dharmasare, Shubham Ganjale, and Nilam Ghuge. "Toolkit Carrying Drone For Maintenance Of High Altitude Transmission Lines." ITM Web of Conferences 44 (2022): 02005. http://dx.doi.org/10.1051/itmconf/20224402005.

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Research and analysis on drones is increasing rapidly nowadays in various fields of application. One of the major problem which arises in the drone application is its ability of lifting heavy loads when attached to it that requires proper design and selection of the required type of drone for its ability to carry out various missions including lifting a heavy load. One of the important type of drone that is widely used is hexacopter drone. This paper shows the design of hexacopter drone that lifts the toolkit which has to be delivered for maintenance of transmission lines at high altitude. It

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Harari, Yaar, Avital Bechar, and Raziel Riemer. "Spinal Moments During Continuous Sequential Lifting, Carrying, and Lowering." Proceedings of the Human Factors and Ergonomics Society Annual Meeting 61, no. 1 (September 2017): 991–92. http://dx.doi.org/10.1177/1541931213601729.

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Taboun, S. M., and S. P. Dutta. "Energy cost models for combined lifting and carrying tasks." International Journal of Industrial Ergonomics 4, no. 1 (July 1989): 1–17. http://dx.doi.org/10.1016/0169-8141(89)90045-0.

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Takei, Yutaka, Eiji Sakaguchi, Koichi Sasaki, Yoko Tomoyasu, Kouji Yamamoto, and Yasuharu Yasuda. "Use of the Airstretcher with dragging may reduce rescuers’ physical burden when transporting patients down stairs." PLOS ONE 17, no. 9 (September 14, 2022): e0274604. http://dx.doi.org/10.1371/journal.pone.0274604.

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Transporting patients down stairs by carrying is associated with a particularly high fall risk for patients and the occurrence of back pain among emergency medical technicians. The present study aimed to verify the effectiveness of the Airstretcher device, which was developed to reduce rescuers’ physical burden when transporting patients by dragging along the floor and down stairs. Forty-one paramedical students used three devices to transport a 65-kg manikin down stairs from the 3rd to the 1st floor. To verify the physical burden while carrying the stretchers, ratings of perceived exertion we

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8

Noviantoro, Feri, and Indraswari Kusumaningtyas. "Analisa Perbandingan Kekuatan Profil Padeye Berdasarkan Desain Standara DNV dan BS-EN Studi Kasus: Cargo Carrying Unit." Journal of Mechanical Design and Testing 3, no. 2 (December 27, 2021): 103. http://dx.doi.org/10.22146/jmdt.60379.

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Abaqus Manual Book Version 6.8 (2008) – Getting started with Abaqus (Interactive Edition)ASTM A36/A36M - 14 (2015) – Standard Specification for Carbon Structural SteelBS EN 12079-1:2006 – Offshore containers and associated lifting sets — Part 1: Offshore containers — Design, manufacture and marking.BS EN 12079-2:2006 – Offshore containers and associated lifting sets — Part 2: Lifting sets — Design, manufacture and marking.BY Y. HIGASHIDA, J. D. BURK, AND F. V. LAWRENCE, JR. (1978). StrainControlled Fatigue Behavior of ASTM A36 and A514 Grade F Steels and 5083-0 Aluminum Weld Materials.Bukaka.

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Racine, Elizabeth F., Sarah B. Laditka, Jacek Dmochowski, Michael C. R. Alavanja, Duck-chul Lee, and Jane A. Hoppin. "Farming Activities and Carrying and Lifting: The Agricultural Health Study." Journal of Physical Activity and Health 9, no. 1 (January 2012): 39–47. http://dx.doi.org/10.1123/jpah.9.1.39.

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Background:Heavy carrying and lifting (HCL) is a common activity among farmers that may be related to health. The aim of this study was to examine HCL as a proxy for occupational physical activity (PA) among farm residents. The secondary objective was to evaluate PA based on HCL.Methods:Data from 21,296 farmers and 30,951 spouses in the Agricultural Health Study examined the relationship between HCL and farm activities and individual/farm characteristics. HCL was categorized as ≥ 1 or < 1 hours per day. The association between HCL and farm activities (15 for farmers; 16 for spouses) and ind

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10

Zhao, Caijun, Kai Way Li, and Cannan Yi. "Assessments of Work Gloves in Terms of the Strengths of Hand Grip, One-Handed Carrying, and Leg Lifting." Applied Sciences 11, no. 18 (September 7, 2021): 8294. http://dx.doi.org/10.3390/app11188294.

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Gloves are used at workplaces to protect hands and fingers from potential hazards. Three types of work gloves were assessed in terms of the strength of grip, carrying, and lifting. Thirty adults (14 males and 16 females) joined as human participants. The strength data were measured under bare hand and three gloved conditions. The grip spans in the grip strength measurements included 45 mm, 55 mm, 65 mm, and 75 mm. The carrying strength was measured for both dominant and non-dominant hands under leg straight and semi-squat postural conditions. The lifting strength was measured at a semi-squat p

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11

Mazlina Kamarudzaman, Nurul Elyna Asyiqen Mohd Zaki, and Mohd Nasrull Abdol Rahman. "RELATIONSHIP BETWEEN MANUAL MATERIAL HANDLING AND MUSCULOSKELETAL DISORDER AMONG MECHANICS AT TYRE SERVICE CENTER." International Journal of Industrial Management 17, no. 3 (September 21, 2023): 162–67. http://dx.doi.org/10.15282/ijim.17.3.2023.9757.

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Musculoskeletal disorders (MSDs) are major contributors to work-related disability and time lost caused by illness. As manual material handlers, mechanics are frequently exposed to the physical risk factors for MSDs. The objective of this study is to investigate the relationship between manual materials handling and snook mital table among mechanics at tyre service center. This study was conducted in Taiping, Perak. There were 239 of mechanics from various workshops participated in these study with mainly lifting/lowering, pushing/pulling, and carrying tasks. Data were collected using a struct

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12

Cornman, Jennifer C., Dana A. Glei, and Maxine Weinstein. "Change in Mobility: Consistency of Estimates and Predictors Across Studies of Older Adults." Journals of Gerontology: Series B 76, no. 1 (August 27, 2019): 209–18. http://dx.doi.org/10.1093/geronb/gbz091.

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Abstract Objectives This study compares estimates and determinants of within-individual changes in mobility across surveys of older U.S. adults. Methods Data come from the Health and Retirement Study (HRS) and the Midlife in the United States (MIDUS) study. Measures of mobility comprise self-reported level of difficulty with walking several blocks, going up several flights of stairs, lifting and carrying 10 pounds, and stooping. Predictors include sociodemographic characteristics and indicators of health and health behaviors. We pool the datasets and estimate weighted lagged dependent variable

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13

Yan, Li, Yongxiang Li, Min Cheng, Mingxu Wang, and Peng Liu. "Study on Nonlinear Vibration of Vertical Lifting Section of Bulk Grain Entrainment Ship Unloader." Applied Sciences 13, no. 20 (October 12, 2023): 11213. http://dx.doi.org/10.3390/app132011213.

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In view of the prominent problem that nonlinear vibration of a belt conveyor can easily occur during the vertical grain-conveyance process due to the coupling effect of airflow clamping and traction of the conveyor belt, which seriously affects the efficiency and stability of conveying materials by the belt conveyor, a method of solving the vibration analysis of the vertical lifting section of the bulk grain belt unloader by using nonlinear vibration is proposed. Firstly, based on the laminated plate theory, the vertical lifting belt and the grain material clamped by the belt are laminated. Th

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14

Sharp, Marilyn A., Valerie J. Rice, Bradley C. Nindl, and Robert P. Mello. "Maximum Acceptable Load for Lifting and Carrying in Two-Person Teams." Proceedings of the Human Factors and Ergonomics Society Annual Meeting 39, no. 10 (October 1995): 640–44. http://dx.doi.org/10.1177/154193129503901021.

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The purpose of this study was to determine and verify the maximum acceptable load for lifting and carrying (MALL&C) in single- and mixed-gender two-person teams. Participants lifted and carried a box 7.2 meters and placed it on a 132 cm high shelf, at rates of 1 x/min and 4 x/min. All male teams lifted and carried significantly (p<.05) more weight than all female teams or mixed-gender teams, and mixed-gender teams carried more than all female teams (p>.05). Our findings demonstrate that 1) individuals working alone or in teams can accurately estimate their ability to lift and carry l

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15

Louhevaara, V., A. Long, P. Owen, C. aickin, and B. McPhee. "Local muscle and circulatory strain in load lifting, carrying and holding." Applied Ergonomics 22, no. 6 (December 1991): 418. http://dx.doi.org/10.1016/0003-6870(91)90103-o.

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Lee, W. C., Chae Sil Kim, J. B. Na, D. H. Lee, S. Y. Cho, H. O. Choi, and Jung I. Song. "Structural Stability Evaluation for Lifting Lug Design of Large Marine Engine by Finite Element Analysis." Key Engineering Materials 353-358 (September 2007): 2855–59. http://dx.doi.org/10.4028/www.scientific.net/kem.353-358.2855.

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Since most marine engines are generally very huge and heavy, it is required to keep safety from accidents in dealing them. Several types of lifting lugs have been used to assemble hundred ton–large steel structures and carry the assembled engines. Recently a few crashes have been occurred in carrying engines due to breaking down the lugs. Although the stability evaluation of the lifting lug has therefore been very important for safety, systematic design procedure of the lugs, which includes the structural analysis considering stability, has few reported. This paper describes the three dimensio

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17

Muramatsu, Yoshiki, Hiroyuki Kobayashi, Yutaka Sato, He Jiaou, Takuya Hashimoto, and Hiroshi Kobayashi. "Quantitative Performance Analysis of Exoskeleton Augmenting Devices - Muscle Suit - for Manual Worker." International Journal of Automation Technology 5, no. 4 (July 5, 2011): 559–67. http://dx.doi.org/10.20965/ijat.2011.p0559.

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Exoskeleton systems have been largely developed in spite that quantitative performance estimation has not been reported so far. Consequently, we have been developing the wearable muscle suit for direct and physical motion supports with relevant reports on the performance. The McKibben artificial muscle has introduced “muscle suit” compact, lightweight, reliable, and wearable “assist-bots” enabling users to lift and carry heavy objects. Applying integral electromyography (IEMG), we show the results of quantitative suit performance and posture-preserving efficiency. However, for practical use, l

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18

Rahman, Md Sumon, Abid Hossain Khan, Md Shohanur Rahman, and Baishali Biswas. "Work - Related Musculoskeletal Disorders: A Case Study of Sawmill Workers in Bangladesh." Current World Environment 14, no. 2 (August 30, 2019): 336–45. http://dx.doi.org/10.12944/cwe.14.2.18.

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Sawmill workers in Bangladesh are increasingly at risk of emerging work-related musculoskeletal disorders (WRMSDs). Their jobs involve awkward manual handling tasks such as lifting, carrying, pushing and pulling. These are identified as risk factors for musculoskeletal disorders. The aims of this study are to find out the prevalence of musculoskeletal disorders and assessing the postural risk level among sawmills workers. This cross-sectional study was conducted with 254 workers from 60 sawmills at the southern part of Bangladesh. The overall 70.1% of sawmills workers were suffering musculoske

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Katoch, Varun, and Sanjay Mohan. "Design and fabrication of a safety frame for workers carrying out head lifting at construction sites." Journal of Engineering, Design and Technology 17, no. 6 (December 4, 2019): 1250–65. http://dx.doi.org/10.1108/jedt-02-2019-0037.

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Purpose The purpose of this paper is to identify the musculoskeletal problems faced by the workers carrying out head lifting at the construction sites and to present a solution for the identified problems. Design/methodology/approach The methodology of the paper is framed in two phases. First, the identification of the problems faced by workers through interviews/questionnaire and second, designing and fabricating a mechanical system to safe guard workers against musculoskeletal disorders. Findings Based upon the interviews and questionnaires, it was ascertained that majority of the workers we

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Ranavolo, Alberto, Arash Ajoudani, Giorgia Chini, Marta Lorenzini, and Tiwana Varrecchia. "Adaptive Lifting Index (aLI) for Real-Time Instrumental Biomechanical Risk Assessment: Concepts, Mathematics, and First Experimental Results." Sensors 24, no. 5 (February 24, 2024): 1474. http://dx.doi.org/10.3390/s24051474.

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When performing lifting tasks at work, the Lifting Index (LI) is widely used to prevent work-related low-back disorders, but it presents criticalities pertaining to measurement accuracy and precision. Wearable sensor networks, such as sensorized insoles and inertial measurement units, could improve biomechanical risk assessment by enabling the computation of an adaptive LI (aLI) that changes over time in relation to the actual method of carrying out lifting. This study aims to illustrate the concepts and mathematics underlying aLI computation and compare aLI calculations in real-time using wea

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Intaranont, Kitti, and Anakapon Wiengpon. "Lifting Limits of Rice-Bag-Carrying Tasks Using a Work Physiological Approach." Proceedings of the Human Factors and Ergonomics Society Annual Meeting 44, no. 29 (July 2000): 205–8. http://dx.doi.org/10.1177/154193120004402954.

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Louhevaara, Veikko, Airdrie Long, Peter Owen, Christine Aickin, and Barbara McPhee. "Local muscle and circulatory strain in load lifting, carrying and holding tasks." International Journal of Industrial Ergonomics 6, no. 2 (September 1990): 151–62. http://dx.doi.org/10.1016/0169-8141(90)90019-x.

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Visser, Steven, Gert S. Faber, Marco J. M. Hoozemans, Henk F. van der Molen, P. Paul F. M. Kuijer, Monique H. W. Frings-Dresen, and Jaap H. van Dieën. "Lumbar compression forces while lifting and carrying with two and four workers." Applied Ergonomics 50 (September 2015): 56–61. http://dx.doi.org/10.1016/j.apergo.2015.02.007.

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Kemp, Philip A., Bruce R. Burnham, G. Bruce Copley, and Matthew J. Shim. "Injuries to Air Force Personnel Associated with Lifting, Handling, and Carrying Objects." American Journal of Preventive Medicine 38, no. 1 (January 2010): S148—S155. http://dx.doi.org/10.1016/j.amepre.2009.10.011.

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Adellian Nugraha and Noeroel Widajati. "Ergonomic risks in manual material handling activities and musculoskeletal disorders complaints in the animal feed industry production area in East Java, Indonesia." World Journal of Advanced Research and Reviews 22, no. 1 (April 30, 2024): 1028–34. http://dx.doi.org/10.30574/wjarr.2024.22.1.1147.

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Introduction: Manual lifting and load transfer processes that are not carried out properly will result in over exertion-lifting and carrying, i.e. body tissue damage caused by excessive lifting. One of the work-related diseases caused by this activity is Musculoskeletal Disorders (MSDs), a disorder that occurs in the muscles, nerves, tendons, ligaments, joints, cartilages, or the intervertebral discs. The study aims to find out the picture of ergonomic risk in manual material handling activity and musculoskeletal complaints. Methods: Data was obtained from two respondents through accidental sa

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Chen, Zheng Mao, Hong Lin Xu, and Ji You Xiong. "Numerical Computation Studies and Hydrodynamic Analysis on the Cutting-Carrying and Lifting Capacity of Spiral Centralizer in Gas Drilling." Applied Mechanics and Materials 345 (August 2013): 325–30. http://dx.doi.org/10.4028/www.scientific.net/amm.345.325.

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For gas drilling, hole cleaning is a particularly critical problem. When the spiral centralizer is used in the down hole assembly of gas drilling, it will produce a powerful rotational flow which will be bond to have the influence of different level on the hole cleaning. For this matter, this paper has established a three-dimensional fluid dynamics model in the basis of gas-solid two-phase turbulent theory and got its numerical solution by using the finite volume method, therefore making a quantitative evaluation about the ability of cutting-carrying and lifting of the spiral centralizer. The

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Liu, Weiwei, and Jiang Liu. "Strength Analysis on the Frame of Off-way Wide-body Mining Dump Truck Based on Finite Element Analysis." Journal of Physics: Conference Series 2173, no. 1 (January 1, 2022): 012049. http://dx.doi.org/10.1088/1742-6596/2173/1/012049.

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Abstract The frame is an important component for the off-way wide-body mining dump truck. The carrying capacity of the truck is greatly affected by the strength of the frame. The finite element analysis was used to simulate the strength of the frame under the work condition of full load and lifting. The maximum stress of the frame is 214MPa under the full load condition, and the maximum stress of the frame is 459MPa under lifting condition. The upper surface of the frame near the rear axle is the more dangerous section for the frame under the two working conditions. The stiffness of the front

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Sathival, Mugiillan, I. Nyoman Mangku Karmaya, and Yuliana . "Prevalence of scoliosis in excessive weight bearing female market workers more than 50 years old and working more than 5 years in Pasar Kumbasari, Denpasar, Bali." Bali Anatomy Journal 1, no. 1 (January 8, 2018): 17–20. http://dx.doi.org/10.36675/baj.v1i1.9.

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Market workers tend to work a lot in order to feed their family. A lot of human labour work is done at the expense of their health status in order to make a living. Aim: This study was conducted to determine the prevalence of scoliosis in female market workers in Pasar Kumbasari, Denpasar, Bali and the load lifting technique used to carry the loads in the market. Methods: This is a cross sectional descriptive study done with non-probability consecutive sampling. Questionnaires were distributed to aid in obtaining information regarding the study. Results: Of the total 115 female market workers

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Olarte, Carolina Rivera, Juliana Velásquez Gómez, and Yesid Montoya Góez. "Diseño de Prototipo de Prótesis de Miembro Superior para Práctica de Halterofilia de Crossfit." KnE Engineering 3, no. 1 (February 11, 2018): 832. http://dx.doi.org/10.18502/keg.v3i1.1504.

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CrossFit® in people with a upper limb disability is a challenge in designing elements for weight lifting above the head due to: fixation, carrying capacity and safety. This paper presents a proposal for the design of a prosthesis prototype for CrossFit® weightlifting practice with wrist disarticulation, based on the product design methodology of Ulrich and Eppinger, including detailed design through Finite Element Analysis (FEA) and tensile failure test in a load system INSTRON® 5582. The results show from the mechanical point of view that the design allows the lifting of loads up to 2000N.Key

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Ram, Paras, and Anil Kumar. "Analysis of Heat Transfer and Lifting Force in a Ferro-Nanofluid Based Porous Inclined Slider Bearing with Slip Conditions." Nonlinear Engineering 8, no. 1 (January 28, 2019): 206–15. http://dx.doi.org/10.1515/nleng-2018-0014.

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Abstract Thermal effects have been investigated in a porous inclined slider bearing together with the slip boundary conditions. Using Jenkins model, the governing system of equations pertaining to the flow is solved analytically to yield the various bearing characteristics. The expressions for mean temperature, pressure and the lifting force (load carrying capacity) have been derived as a function of slip, magnetic, permeability, material and thermal parameters. Furthermore, the term pertaining to the co-rotational derivative of magnetization is expected to influence the lifting force signific

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Harari, Yaar, Raziel Riemer, and Avital Bechar. "Factors determining workers' pace while conducting continuous sequential lifting, carrying, and lowering tasks." Applied Ergonomics 67 (February 2018): 61–70. http://dx.doi.org/10.1016/j.apergo.2017.09.003.

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Xiang, Yujiang, Shadman Tahmid, Paul Owens, and James Yang. "Two-Dimensional Symmetric Box Delivery Motion Prediction and Validation: Subtask-Based Optimization Method." Applied Sciences 10, no. 24 (December 9, 2020): 8798. http://dx.doi.org/10.3390/app10248798.

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Box delivery is a complicated manual material handling task which needs to consider the box weight, delivering speed, stability, and location. This paper presents a subtask-based inverse dynamic optimization formulation for determining the two-dimensional (2D) symmetric optimal box delivery motion. For the subtask-based formulation, the delivery task is divided into five subtasks: lifting, the first transition step, carrying, the second transition step, and unloading. To render a complete delivering task, each subtask is formulated as a separate optimization problem with appropriate boundary c

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Kuijer, P. Paul F. M., Jos H. Verbeek, Andreas Seidler, Rolf Ellegast, Carel T. J. Hulshof, Monique H. W. Frings-Dresen, and Henk F. Van der Molen. "Work-relatedness of lumbosacral radiculopathy syndrome." Neurology 91, no. 12 (August 17, 2018): 558–64. http://dx.doi.org/10.1212/01.wnl.0000544322.26939.09.

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ObjectiveClinicians need to know whether lumbosacral radiculopathy syndrome (LRS) can be attributed to work. This review describes what work-related risk factors are associated with LRS.MethodsA systematic review was performed in PubMed and Embase. Inclusion criteria were that LRS was diagnosed by a clinician and workers exposed to work-related risk factors were compared to workers less or not exposed. A quality assessment and a meta-analysis were performed, including a dose-response analysis.ResultsThe search resulted in 7,350 references and 24 studies that fulfilled the inclusion criteria: 1

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Riemer, Julia, Thomas Jaitner, and Sascha Wischniewski. "Investigating Inter-Day Variations in the Physical Effects of Exoskeletons: Requirements for Long-Term Biomechanical Studies." Applied Sciences 13, no. 11 (May 25, 2023): 6483. http://dx.doi.org/10.3390/app13116483.

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Exoskeletons potentially reduce physical strain on workers. However, studies investigating the long-term effects of exoskeletons in the workplace are rare, not least because demonstrating physical long-term impacts faces several challenges, including the collection of reliable biomechanical data with the exoskeleton. By examining the potential impact of using an exoskeleton on inter-day measurements, we can provide valuable insights into the suitability of long-term studies. Therefore, this study aims to investigate the inter-day variation in muscle activity (MA) and kinematics of the trunk an

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Al-Sudani, Jalal A. "Analyzing Hydrodynamic Energy Consumption to Predict Carrying Capacity Index." SPE Journal 25, no. 06 (May 22, 2020): 2822–36. http://dx.doi.org/10.2118/201197-pa.

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Summary Implementing efficient fluid-carrying capacity of drilled cuttings is an essential process for a good drilling program, either for a better rate of penetration (ROP) or a safer drilling operation. In this paper, I present a methodology that is based on the transfer function representation, which can be used to analyze the consumed fluid energy used in lifting the drilled cuttings in vertical wells to estimate the maximum carrying capacity index (CCI), which leads to performance at the desired ROP. The consumed hydrodynamic energy equation has been formulated using a second-order differ

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Wei, Wei, Shijia Zha, Yuxuan Xia, Jihua Gu, and Xichuan Lin. "A Hip Active Assisted Exoskeleton That Assists the Semi-Squat Lifting." Applied Sciences 10, no. 7 (April 2, 2020): 2424. http://dx.doi.org/10.3390/app10072424.

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(1) Background: In the case of quick picking and heavy lifting, the carrying action results in a much more active myoelectric signal in the lower back than in an upright stationary one, and there is a high risk of back muscle injury without proper handling skills and equipment. (2) Methods: To reduce the risk of LBP during manual handing tasks, a hip active exoskeleton is designed to assist human manual lifting. A power control method is introduced into the control loop in the process of assisting human transportation. The power curve imitates the semi-squat movement of the human body as the o

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Ncube, France, Esper Jacobeth Ncube, and Kuku Voyi. "Postural Analysis of a Developing Country’s Municipal Solid Waste Handlers and a Reference Group of Hospital General Hands using the RULA Method." Global Journal of Health Science 9, no. 10 (September 17, 2017): 194. http://dx.doi.org/10.5539/gjhs.v9n10p194.

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BACKGROUND: Municipal solid waste handlers perform various work activities which may contribute to the onset of work-related musculoskeletal disorders (WRMDs). This study conducted a postural analysis of these workers and a reference group of hospital general hands in order to identify unsafe working postures requiring correction. METHODS: The Rapid Upper Limb Assessment (RULA) methodology was used for postural analysis to 30 municipal solid waste handlers (MSWHs) and a reference group of 30 hospital general hands (HGHs) involved in similar work activities. Field observations and photography w

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MAEYAMA, Shoichi, Yasuhiro UWAI, and Keigo WATANABE. "Lifting Judgment with a Boosting Algorithm for Robust Dead Reckoning When Carrying a Robot." TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series C 77, no. 774 (2011): 450–59. http://dx.doi.org/10.1299/kikaic.77.450.

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Mital, Anil, Hamid Founooni-Fard, and Max L. Brown. "Fatigue in High and Very High Frequency Manual Lifting, Lowering and Carrying and Turning." Proceedings of the Human Factors and Ergonomics Society Annual Meeting 37, no. 10 (October 1993): 674–78. http://dx.doi.org/10.1177/154193129303701006.

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This paper presents the results of a study undertaken to determine the perceived exertion and physiological responses of highly trained and experienced workers to high (up to 16 repetitions per minute) and very high frequency (above 16 repetitions per minute) manual lifting, lowering, and carrying and turning tasks. The results indicate that workers engaged in such highly repetitive and physically demanding tasks operate at work loads that may clearly be considered physically fatiguing and unacceptable by the current physiological design criteria. The workers, however, perceived these exertion

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Waters, Thomas, Andrea Baptiste, Manon Short, Lori Plante-Mallon, and Audrey Nelson. "AORN Ergonomic Tool 6: Lifting and Carrying Supplies and Equipment in the Perioperative Setting." AORN Journal 94, no. 2 (August 2011): 173–79. http://dx.doi.org/10.1016/j.aorn.2010.09.033.

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Zhang, Meichao, Aitao Lu, and Bert H. Hodges. "Lifting, tasting, and carrying: The interaction of magnitude and valence effects in time perception." Acta Psychologica 193 (February 2019): 1–10. http://dx.doi.org/10.1016/j.actpsy.2018.11.010.

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Şahin, Yusuf, Fatih Mehmet Botsalı, Mete Kalyoncu, Mustafa Tinkir, Ümit Önen, Nihat Yılmaz, and Abdullah Çakan. "Mechanical Design of Lower Extremity Exoskeleton Assisting Walking of Load Carrying Human." Applied Mechanics and Materials 598 (July 2014): 141–45. http://dx.doi.org/10.4028/www.scientific.net/amm.598.141.

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Exoskeletons are used in rehabilitation, military, industrial applications and rescuing, heavy-weight lifting and civil defense applications as well. This paper presents to design of a lower-extremity exoskeleton assisting walking of a load carrying human. Proposed exoskeleton system is designed to be appropriate mechanism with human lower extremity and it operates synchronously with the human realizes. The aim of exoskeleton actuator system is to provide forces against to external load carried by user during walking, sitting, and standing motions. Thus, it supports human walking and significa

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Pedrazzi, Giulia, Giancarlo Giacomini, and Daniela Silvia Pace. "First Report of Epimeletic and Acoustic Behavior in Mediterranean Common Bottlenose Dolphins (Tursiops truncatus) Carrying Dead Calves." Biology 11, no. 2 (February 21, 2022): 337. http://dx.doi.org/10.3390/biology11020337.

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Epimeletic behavior toward dead calves has been frequently reported in cetaceans, mostly with females (presumed mothers) showing supportive behaviors such as carrying, lifting, or sinking, often assisted by “escort” individuals. However, information on acoustic production in such contexts is scarce. This report describes two observations of epimeletic behavior toward dead newborns in bottlenose dolphins and associated acoustic production. Data were collected at the Tiber River estuary (Rome, Mediterranean Sea, Italy) with one hydrophone for passive acoustic monitoring and two digital cameras.

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Song, Jiyuan, Aibin Zhu, Yao Tu, and Jiajun Zou. "Multijoint passive elastic spine exoskeleton for stoop lifting assistance." International Journal of Advanced Robotic Systems 18, no. 6 (November 1, 2021): 172988142110620. http://dx.doi.org/10.1177/17298814211062033.

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In the task of carrying heavy objects, it is easy to cause back injuries and other musculoskeletal diseases. Although wearable robots are designed to reduce this danger, most existing exoskeletons use high-stiffness mechanisms, which are beneficial to load-bearing conduction, but this restricts the natural movement of the human body, thereby causing ergonomic risks. This article proposes a back exoskeleton composed of multiple elastic spherical hinges inspired by the biological spine. This spine exoskeleton can assist in the process of bending the body and ensure flexibility. We deduced the ki

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Zhang, Xue-Bo, Shuai-Shuai Shen, Zhi-Yang Gao, Ming Yang, and Jing-Zhang Ren. "Research on the Decompression Effects of Shaft Explosion-Proof Door at Different Lifting Heights." Shock and Vibration 2021 (September 27, 2021): 1–10. http://dx.doi.org/10.1155/2021/2115767.

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To study the decompression effects of shaft explosion-proof door at different lifting heights, this paper designed the gas explosion testing system. Based on the test results, this paper made a numeric analysis of the change regularities of the shock wave overpressure when the shaft explosion-proof door was lifted at different heights. Finally, this paper determined the proper lifting height of the shaft explosion-proof door and put forward the active decompression concept. The research showed that (1) the shock wave overpressure at the explosion-proof door decreased in a power exponential rel

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Panikarovskii, E. V., and V. V. Panikarovskii. "METHODS OF MAINTAINING THE PROJECT LEVELS OF GAS PRODUCTION AT THE FINAL STAGE OF DEVELOPMENT OF DEPOSITS." Oil and Gas Studies, no. 4 (September 1, 2017): 80–83. http://dx.doi.org/10.31660/0445-0108-2017-4-80-83.

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In the case of self-kill of wells, the gas flow velocity in the lifting column is not sufficient for carrying to the surface of the liquid, accumulated in the wellbore. To remove liquid from the bottom of wells, solid and liquid surfactants are used. As a result of conducted studies of surfactant compositions, the components of surfactant solutions were chosen to remove liquid from the bottom of wells.

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Mahachandra, Manik, Heru Prastawa, and Dhialma Yonathan Susilo. "Working posture analysis of sweet whey powder handling at CV Cita Nasional warehouse using OVAKO Working Posture Analysis (OWAS)." SHS Web of Conferences 49 (2018): 02013. http://dx.doi.org/10.1051/shsconf/20184902013.

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In this 4.0 industrial era, some material handlings are still conducted manually by human. One example is in the warehouse area of CV Cita Nasional, a milk processing factory in Kopeng, Central Java. Workers are repetitively unloading a 25 kg sack of sweet whey powder from truck to warehouse area. Therefore, this study was carried out to investigate the musculoskeletal disorders risks on that workers manual handling activity. The OVAKO Working Posture Analysis System (OWAS) was chosen to be applied in the evaluation steps. For each activity in the unloading process, OWAS score category of 3 (i

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Chen, Lingping, Yanchao Zhang, Yahui Cui, Bowen Zhi, Jie Wang, and Mingfeng Wang. "Numerical investigation on sealing performance of non-contact finger seal with herringbone groove surface topography." Surface Topography: Metrology and Properties 9, no. 4 (December 1, 2021): 045041. http://dx.doi.org/10.1088/2051-672x/ac4149.

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Abstract Since the last decade, the non-contact finger seal (NCFS) has attracted an increasing number of researchers due to its inherent flexibility and non-contact features, which can significantly improve the service life and reduce the leakage rate of the finger seals. In this paper, to enhance the NCFS sealing performance, lifting pads with twenty (20) different herringbone groove surface topographies are proposed based on the uniform design method. Numerical analysis is carried out based on the two-way fluid-structure interaction (FSI) method to better mimic the actual working conditions.

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Stawinski, Lukasz, Jakub Zaczynski, Adrian Morawiec, Justyna Skowronska, and Andrzej Kosucki. "Energy Consumption Structure and Its Improvement of Low-Lifting Capacity Scissor Lift." Energies 14, no. 5 (March 2, 2021): 1366. http://dx.doi.org/10.3390/en14051366.

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The article presents the experimental investigation of low-lifting capacity hydraulic scissor lift energy consumption. The analysis is based on experimental tests of two individual drives of the scissor lift: the conventional one and the variable-speed electro-hydraulic one. The investigation focuses on the study of the total energy consumption for lifting and lowering the scissor lift with different masses of transported cargo and also power consumptions of each element supplying these systems. Particular attention was paid to the significant impact of power supply on each control component a

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Tritjahjono, Rachmad Imbang, Ramadhan Ramadhan, Destri Muliastri, Casiman Sukardi, and Yun Gemilang. "PERANCANGAN GIRDER PADA FLEKSIBEL GANRTY CRANE KAPASITAS 1 TON." JTT (Jurnal Teknologi Terapan) 9, no. 2 (October 31, 2023): 156. http://dx.doi.org/10.31884/jtt.v9i2.610.

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Lifting and transporting equipment is one of the keys to carrying out work in the manufacturing and construction industries. Due to limited access, various obstacles must be overcome in some working areas. A ganrty crane is an alternative lifting equipment that has high flexibility. This article reports the research results on the girder’s main components. This component gets direct contact with loading when lifting and rigging work is carried out. This research method was conducted by comparing manual calculation models and CAE using the Solidworkss Simulation software. From these two methods

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