HAND TOOLS OPERATOR 'S HEALTH WORKSHOP ON MECHANICAL AND LEVEL OF RISK WHITE SYNDROME FINGERS

2016 ◽  
Vol 78 (5) ◽  
Author(s):  
Toni Dwi Putra ◽  
Vitri Pitrandjalisari ◽  
Nurida Finahari
Keyword(s):  
Working Conditions ◽  
Laboratory Tests ◽  
Field Data ◽  
Field Trials ◽  
Safety Equipment ◽  
Hand Tools ◽  
White Syndrome ◽  
Shoulder Joints ◽  
Hand Tool ◽  
Negative Effect

Workers in the metal industry are using the equipment (hand tool) that produces vibrations. These vibrations have a negative effect on the fingers, forearm, or shoulder joints. Disorders that often arises is often called the effects of hand arm vibration. These effects vary of workers, ranging from finger whitened condition to the inability to move the finger. Lack of security and safety equipment will further enlarge this negative effect, because the disturbance will result in declining labor productivity. This study aims to model safety equipment in the form of fluidic damper to reduce glove hand arm vibration. This objective will be carried out in stages: 1) obtain field data on working conditions, workload with a hand tool and type of equipment used, 2) determine the parameters of vibration hand tool that is widely used, 3) modeling and making fluidic damper glove, perform the test comparison of the use and without the use of glove, 4) glove on field trials that have been surveyed. In the period of the study for 2 years, each parameter vibration hand tools frequently used can be measured in the laboratory. Tests conducted to determine the vibration of the arms that operate hand tools. Fluidic damper glove designed to dampen vibrations in the arm so that its effect on health problems can be reduced.

Evaluation of an Experimental Testing System for Non-Powered Hand Tools

2000 ◽  
Vol 44 (22) ◽  
pp. 643-646 ◽  
Author(s):  
Tanja Niemelä ◽  
Markku Leppänen ◽  
Minna Päivinen ◽  
Markku Mattila
Keyword(s):  
Measurement System ◽  
Experimental Testing ◽  
Opening Angle ◽  
Emg Activity ◽  
Testing System ◽  
Strain Gages ◽  
Flexor Muscle ◽  
Hand Tools ◽  
Hand Tool ◽  
Forearm Flexor

During the Eurohandtool Project an experimental testing system for non-powered hand tools was developed for laboratory testing. With this system, it is possible to measure simultaneously (1) the EMG activity of two muscles, (2) the opening angle of hand tool blades by means of a potentiometer and, (3) by means of strain gages, the force transmitted to the handle. The first part of evaluation of the system was to determine its time of warming-up, reliability, linearity and repeatability. This paper concentrates on the second part, during which the aim was to test the measurement system by comparing the forces needed to cut wood of a certain diameter, and the actual force required, as measured by a material-testing system. The correlation between forearm flexor muscle activity and the compression force created by the user was investigated. The evaluation of experimental testing system for non-powered hand tools has shown that there are methods to measure force demand, opening angle and EMG-activity simultaneously. However, it is recommended to make some improvements before this measurement system can be taken into widespread use.

scholarly journals Sustainable Control of Equine Nematodes: A Literature Review about Control by Fungal Cultures

2019 ◽  
Vol 8 (2) ◽  
pp. 20
Author(s):  
Heli I. Koskinen
Keyword(s):  
Literature Review ◽  
Laboratory Tests ◽  
Sustainable Use ◽  
Field Trials ◽  
Review Of Literature ◽  
Veterinary Practitioner ◽  
New Knowledge

Larsen, Nansen, Grönvold, Wolstrup and Henriksen (1997) have previously reviewed the prospects of control of equine nematodes by using fungal cultures. Since then more investigations have been implemented and actualized. Field trials and laboratory tests have been reported with new perspectives and increasing number of animals in trials. The aim of this new review of literature is to add new knowledge to those questions that remained open in the 1990s. In particular, on the perspective of veterinary practitioner and sustainable use of deworming practices it is important to know those directions which should be followed.

scholarly journals Laboratory and field evaluation of pyriminyl as a poison for Rattus norvegicus

1980 ◽  
Vol 84 (3) ◽  
pp. 347-354
Author(s):  
B. D. Rentnison ◽  
R. Redfern ◽  
A. C. Dubock ◽  
J. E. Gill ◽  
C. G. J. Richards
Keyword(s):  
Rattus Norvegicus ◽  
Laboratory Tests ◽  
Corn Oil ◽  
Field Evaluation ◽  
Field Trials ◽  
Zinc Phosphide ◽  
Optimum Concentration ◽  
Commercial Use

SUMMARYLaboratory tests indicated that the optimum concentration for pyriminyl in rat baits was between 1% and 3%. In field trials in which 0·5% pyriminyl (the concentration in commercial use) was compared with 2·5% zinc phosphide for the control of rats on farms, the pyriminyl treatments were significantly less effective than the zinc phosphide even when the poisoned baits were left down for 7 days instead of 1 day after prebaiting. Both poisons were as effective in medium oatmeal bait as they were in medium oatmeal containing 5% corn oil and 5% sugar.

A questionnaire-based musculoskeletal disorder assessment for aircraft maintenance technicians

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Ebru Yazgan ◽  
Necmettin Firat Ozkan ◽  
Berna Haktanirlar Ulutas
Keyword(s):  
Environmental Factors ◽  
Working Conditions ◽  
Material Handling ◽  
Musculoskeletal Disorder ◽  
Aircraft Maintenance ◽  
Body Parts ◽  
Hand Tools ◽  
Content Type ◽  
Manual Material Handling ◽  
Fall Protection

Purpose Aircraft maintenance technician (AMT) is the most critical profession in the aircraft maintenance system. The tasks of a licensed AMT require expertise and involve repetitive physical tasks such as tightening or loosening aircraft parts, carrying or removing parts during long working hours under time pressure and day/night shifts. This study aims to attract attention to the difficult working conditions of AMTs and identify the body parts that are at risk of musculoskeletal disorder (MSD). Design/methodology/approach A questionnaire is developed by the authors to gather demographic information, use of hand tools, equipment, use of fall protection, manual material handling (lifting, pushing, pulling), load weight, environmental factors, and MSD discomfort level perceptions. The questionnaire is applied to 150 AMTs during six months period, and the obtained data are analyzed by sequential ordinal logistic regression (OLR) models. Findings The ORL results confirm that the use of equipment (lift platform, scissors lift), safety belt attached to the platform, manual material handling, environmental factors (humidity, vibration and illumination) and resting periods have a significant effect on MSD risks. On the contrary, age, experience level, use of small hand tools, temperature and noise are not identified as statistically significant. Originality/value The study is original for it considers the working conditions and perceived discomfort levels of AMTs. A questionnaire is introduced to assess the consequences of the use of tools, equipment, fall protection equipment, environmental conditions and work organization on various body parts (neck, shoulder, elbow, back, lower back, wrist-hand, hip, knee, and ankle-feet), and strain level is identified. The study contributes to the theoretical aircraft maintenance literature and managers in practice.

scholarly journals The Laboratory Definition of the Thermal Resistance of Growing Media for Green Roofs: New Experimental Setups

Buildings ◽  
2018 ◽  
Vol 8 (10) ◽  
pp. 139 ◽  
Author(s):  
Benedetta Barozzi ◽  
Alice Bellazzi ◽  
Claudio Maffè ◽  
Italo Meroni
Keyword(s):  
Thermal Resistance ◽  
Working Conditions ◽  
Laboratory Tests ◽  
National Research Council ◽  
Green Roofs ◽  
Growing Media ◽  
Experimental Campaign ◽  
Methodological Approaches ◽  
Set Up ◽  
Definition Of

Green roofs are one of the most extensively investigated roofing technologies. Most of the bibliographical studies show results of researches focused on the analysis of different configurations of green roofs, but only few researches deal with the calculation of the growing media thermal resistance using laboratory tests. From 2009 to 2013, ITC-CNR, the Construction Technologies Institute of the National Research Council of Italy, carried out a first laboratory experimental campaign focused on the definition of thermal performances curves of growing media for green roofs as a function of both density and percentage of internal moisture. During this campaign, the experimental results underlined some existing gaps, such as the absence of specific standards concerning the sample laboratory preparation, the absence of shared references concerning the compaction level reached by samples in real working conditions and the evaluation of the internal moisture content of growing media exposed to atmospheric agents. For this reason, the ITC-CNR has set up a second experimental campaign focused on the solution of the gaps underlined by the first phase concerning the preparation of samples for the laboratory calculation of the thermal resistance of growing media for green roofs. This paper proposes and presents methodological approaches, methods and new test devices implemented to solve these gaps, and the results obtained.

scholarly journals The effect of ecological growing on the potatoes yield and quality

2011 ◽  
Vol 51 (No. 9) ◽  
pp. 397-402 ◽  
Author(s):  
K. Hamouz ◽  
J. Lachman ◽  
P. Dvořák ◽  
V. Pivec
Keyword(s):  
Mechanical Damage ◽  
Field Trials ◽  
Matter Content ◽  
Point Of View ◽  
Nitrate Content ◽  
Dry Matter Content ◽  
Yield And Quality ◽  
Negative Effect ◽  
Cultivated Potatoes

In the years 1995–1997 the effect of ecological growing on the yield and selected parameters of quality of consumer potatoes (in comparison with conventional way) were investigated. The ecological way of growing differed in the lack of chemical protection against diseases and pests and industrial fertilizers. Field trials were realised with seven varieties (Impala, Karin, Agria, Korela, Rosella, Santé and Ornella) on two sites (Uhříněves and Valečov). The ecological way of growing had markedly negative effect on the yield (decrease by 36%). In qualitative parameters the ecological way increased inconclusively polyphenol content (by 10.2%), decreased inconclusively nitrate content (by 11.0%) and reducing sugars (by 22%). It did not affect dry matter content, resistance of tubers to mechanical damage, table value and glycoalkaloid content. Variety Santé achieved the best results from the point of view of the yield and majority of qualitative parameters among varieties. Qualitative parameters of ecologically cultivated potatoes were significantly affected by the year of cultivation.

scholarly journals Divergent selection and genetic introgression shape the genome landscape of heterosis in hybrid rice

2020 ◽  
Vol 117 (9) ◽  
pp. 4623-4631 ◽  
Author(s):  
Zechuan Lin ◽  
Peng Qin ◽  
Xuanwen Zhang ◽  
Chenjian Fu ◽  
Hanchao Deng ◽  
...  
Keyword(s):  
Hybrid Rice ◽  
Field Trials ◽  
Hybrid Breeding ◽  
Genetic Introgression ◽  
Rice Varieties ◽  
Rice Landraces ◽  
Rice Hybrid ◽  
Negative Effect ◽  
Two Populations ◽  
Positive Effect

The successful application of heterosis in hybrid rice has dramatically improved rice productivity, but the genetic mechanism for heterosis in the hybrid rice remains unclear. In this study, we generated two populations of rice F1hybrids with present-day commercial hybrid parents, genotyped the parents with 50k SNP chip and genome resequencing, and recorded the phenotype of ∼2,000 hybrids at three field trials. By integrating these data with the collected genotypes of ∼4,200 rice landraces and improved varieties that were reported previously, we found that the male and female parents have different levels of genome introgressions from other rice subpopulations, includingindica,aus, andjaponica, therefore shaping heterotic loci in the hybrids. Among the introgressed exogenous genome, we found that heterotic loci, includingGhd8/DTH8,Gn1a, andIPA1existed in wild rice, but were significantly divergently selected among the rice subpopulations, suggesting these loci were subject to environmental adaptation. During modern rice hybrid breeding, heterotic loci were further selected by removing loci with negative effect and fixing loci with positive effect and pyramid breeding. Our results provide insight into the genetic basis underlying the heterosis of elite hybrid rice varieties, which could facilitate a better understanding of heterosis and rice hybrid breeding.

scholarly journals The Relationship Between Bulb Yield and Allicin Concentration in Garlic Varieties

Proceedings ◽  
2019 ◽  
Vol 36 (1) ◽  
pp. 28
Author(s):  
Nguyen ◽  
Wehr ◽  
O’Hare ◽  
Hong ◽  
Menzies ◽  
...  
Keyword(s):  
Block Design ◽  
Health Benefits ◽  
Field Trials ◽  
Organosulfur Compounds ◽  
Potential Health ◽  
Agronomic Practices ◽  
Negative Effect ◽  
Increasing Demand ◽  
Tropical Varieties ◽  
The Relationship

Garlic (Allium sativum L.) is used as a vegetable and medicinal plant. It is a rich source of organosulfur compounds, in particular allicin, which contributes to the flavour and health benefits. Although worldwide garlic production is increasing, demand continues to outstrip supply. Improving the yield of garlic will address the increasing demand, while increasing allicin concentration will improve its potential health benefits and flavour. It is unknown if increasing garlic bulb size (yield) has a negative effect on allicin concentration of garlic. Therefore, a fundamental understanding of the relationship between yield and allicin concentration is required. A field experiment was conducted at Gatton (QLD, Australia) with 32 varieties, of which 29 varieties were sourced from World Vegetable Centre and 3 varieties from existing Queensland sub-tropical varieties. The garlic cloves were planted in March 2018 with 4 replicates in a randomised complete block design and harvested when garlic had 70% senescence. Varieties showed large variation in bulb size, ranging from about 35 to 120 g, with fresh yield ranging from about 5.5 to 16 t/ha. The allicin concentration ranged from 3.5 to 6.6 mg g−1 fresh weight (FW) between varieties and more than 50% of varieties were under the minimum pharmaceutical standard for allicin concentration (>4.5 mg g−1 in FW). Across varieties there was an inverse relationship between yield and allicin concentration. However, there were some varieties which had both high allicin concentration and yield. Current field trials investigate the effect of agronomic practices on yield and allicin concentration in garlic varieties.

RECENT ADVANCES IN DISPERSANT EFFECTIVENESS EVALUATION: EXPERIMENTAL AND FIELD ASPECTS

1985 ◽  
Vol 1985 (1) ◽  
pp. 445-452 ◽  
Author(s):  
J. P. Desmarquest ◽  
J. Croquette ◽  
F. Merlin ◽  
C. Bocard ◽  
G. Castaing ◽  
...  
Keyword(s):  
Laboratory Tests ◽  
Oil Spills ◽  
Practical Interest ◽  
Field Tests ◽  
Field Trials ◽  
Large Field ◽  
Experimental Program ◽  
Experimental Conditions ◽  
Good Accord ◽  
Dispersant Effectiveness

ABSTRACT Although dispersants are used in different countries, it appeared from recent international meetings that more knowledge concerning dispersant effectiveness is still needed for a better response to oil spills. Large field trials which were conducted during the past two years raised some questions as to how dispersants work at sea. Even though the results obtained in different laboratory tests are generally in good accord, significant discrepancies of practical interest may be observed because of variations in the experimental conditions. With EEC support, an experimental program has been conducted by CEDRE and Institut Français du Pétrole (IFP), both with the already-described French middle scale field test and with different laboratory tests (U.K. and French standard tests and the recently developed dilution test). With the objective of correlating the results obtained in field tests and in laboratory tests, several parameters were investigated at sea with different dispersants: the type and viscosity of the oil, slick thickness, and oil to dispersant ratio. Based mainly on the results obtained in the laboratory with dilution tests, new aspects of dispersant behavior have been identified, relating to the nature of the oil and the energy input.

Synthesis of a Time History Based on the Sine-on-Random Prediction Methodology Defined in MIL-STD-810 Method 519

2017 ◽  
Vol 60 (1) ◽  
pp. 31-41
Author(s):  
Michael T. Hale
Keyword(s):  
Time Domain ◽  
Laboratory Tests ◽  
Field Data ◽  
Time History ◽  
Environmental Engineering ◽  
New Technique ◽  
Vibration Test ◽  
Temporal Characteristics ◽  
New Time ◽  
Exponentially Weighted

Abstract Method 519.7, Annex D of MIL-STD-810G, Environmental Engineering Considerations and Laboratory Tests, Change Notice 1 (MIL-STD-810G/CN1) outlines a prediction methodology for establishing a sine-on-random (SoR) structured spectrum that is intended to be representative of gunfire for use in cases in which there is an absence of field data. From that spectrum, the ramp modulated pulse (RMP) technique is proposed as a methodology to synthesize a time history with temporal characteristics that more realistically represent the temporal characteristics of gunfire than that of a SoR time history synthesized via classical SoR generation techniques. This paper provides an alternate technique to the RMP methodology presented in Method 519. The alternate technique is based on normalized exponentially weighted (NEW) time history generated via classical time domain techniques for a SoR vibration test. An outline of the NEW technique and an associated example are provided.

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