Work-Related Asthma from Exposure to Isocyanate Levels Below the Michigan OSHA Permissible Exposure Limit

2008 ◽  
pp. 38-38-16
Author(s):  
MJ Reilly ◽  
KD Rosenman ◽  
JH Peck
Keyword(s):  
Permissible Exposure Limit ◽  
Work Related ◽  
Exposure Limit

scholarly journals The exposure of working environment noise in the agricultural service workplaces

2009 ◽  
Vol 55 (No. 2) ◽  
pp. 69-75 ◽  
Author(s):  
M. Šístková ◽  
A. Peterka
Keyword(s):  
Human Health ◽  
Sound Pressure Level ◽  
Sound Pressure ◽  
Pressure Level ◽  
Working Environment ◽  
Service Workers ◽  
Permissible Exposure Limit ◽  
Noise Characteristics ◽  
Exposure Limit ◽  
Environment Noise

The noise belongs to the leading harmful factors which pollute the environment and negatively influences human health. An overview measurement concerning the noise characteristics has been done in agricultural service workplaces. The sound pressure level has been measured and the length of the workers exposition has been elicited in each workplace. The obtained data has proved that some agricultural service workers have been exposed to a noise above the permissible exposure limit.

scholarly journals The study of the effectiveness of coagulants and white sludge in the process of dephosphotation of municipal wastewater

2020 ◽  
Vol 193 ◽  
pp. 02001
Author(s):  
Tamara Gorbacheva ◽  
Dmitriy Mayorov ◽  
Yuri Velyaev ◽  
Yar Zar Htun
Keyword(s):  
Metal Oxide ◽  
Municipal Wastewater ◽  
Permissible Exposure Limit ◽  
Urban Sewage ◽  
Exposure Limit ◽  
Degree Of Purification

The results of the test coagulation of clarified wastewater of urban sewage facilities are presented in this work. A dose of aluminum and iron-containing coagulants in terms of metal oxide (Me2O3 ) was used as a parameter for comparison of the efficiency of reagent removal of phosphorus from wastewater. It was shown that the uses of any of the selected coagulants make it possible to bring the degree of purification of municipal effluents to the requirements of fishery co-op permissible exposure limit at the stage of simultaneous subsidence, while the best efficiency results are obtained for an aluminum oxychloride coagulant.

Permissible Exposure Limit (PEL)

2016 ◽  
Author(s):  
John H. Duffus ◽  
Monica Nordberg ◽  
Douglas M. Templeton
Keyword(s):  
Permissible Exposure Limit ◽  
Exposure Limit

scholarly journals Pulmonary Evaluation of Permissible Exposure Limit of Syntroleum S-8 Synthetic Jet Fuel in Mice

2009 ◽  
Vol 109 (2) ◽  
pp. 312-320 ◽  
Author(s):  
Simon S. Wong ◽  
Alana Thomas ◽  
Brian Barbaris ◽  
R. Clark Lantz ◽  
Mark L. Witten
Keyword(s):  
Jet Fuel ◽  
Synthetic Jet ◽  
Permissible Exposure Limit ◽  
Exposure Limit

scholarly journals Occupational Exposure on Board Fishing Vessels: Risk Assessments of Biomechanical Overload, Noise and Vibrations among Worker on Fishing Vessels in Southern Italy

Environments ◽  
2019 ◽  
Vol 6 (12) ◽  
pp. 127 ◽  
Author(s):  
Francesca Mansi ◽  
Enza Sabrina Silvana Cannone ◽  
Antonio Caputi ◽  
Luigi De Maria ◽  
Leonardo Lella ◽  
...  
Keyword(s):  
Noise Exposure ◽  
Southern Italy ◽  
Whole Body ◽  
Work Related ◽  
Limit Value ◽  
Fishing Vessels ◽  
Exposure Limit ◽  
High Prevalence ◽  
Measurement Tools ◽  
Whole Body Vibrations

Sea fishing is one of the sectors with the highest risk of illness and work-related accidents. The purpose of the study is to evaluate the exposure of fishing workers to three major risks: biomechanical overload, noise, and whole-body vibrations. We used common methods and measurement tools in the field: observational video analysis, questionnaires, and direct measurement. Noise and vibrations levels were measured aboard five boats belonging to the main fishing communities of Southern Italy. The random sample consisted of 310 workers, of whom 108 agreed to complete a questionnaire to collect data on the perception of occupational risk and self-perception of health conditions. We found that fishermen had a high prevalence of osteoarticular pathologies (42%) and that the biomechanical overload risk is mainly related to handling manual loads. Furthermore, the results indicate that the levels of weekly noise exposure exceed the exposure limit value of 87 decibel A (dBA) for fishing workers, and that the most noisiest area is the engine room. Exposure levels to whole-body vibrations were below <0.5 m/s2. Knowledge on occupational hazards and health effects in the fisheries sector should be used to develop ship technology, raise awareness of the correct use of personal protective equipment, and improve health surveillance of these workers.

PSXIII-18 The effect of lead on alkaline phosphatase serum activity in European carp

2021 ◽  
Vol 99 (Supplement_3) ◽  
pp. 434-435
Author(s):  
Polina D Bokhan ◽  
Polina A Polistovskaia ◽  
Larisa Y Karpenko ◽  
Abram I Enukashvili ◽  
Alesya A Bakhta ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Russian Federation ◽  
Lead Acetate ◽  
Control Group ◽  
Acetate Concentration ◽  
Permissible Exposure Limit ◽  
Serum Activity ◽  
Exposure Limit ◽  
The Russian Federation ◽  
Experimental Group

Abstract The aim of this research is to assess the toxic influence of heavy metals in fish. This study was intended to analyze alkaline phosphatase (AP) serum activity under the influence of various lead concentrations in European carp. AP is involved in the dephosphorylation processes and is an important indicator of liver and skeleton tissue metabolism. When exposed to heavy metals, a change in the activity of this enzyme can be observed. In this experiment 3 groups of fish (European carp) were formed, 10 fish in each group: control group; 1-experimental group – fish were contained in water with 0.06 mg/l lead acetate concentration (upper threshold level than fishery waters permissible exposure limit according to the laws of the Russian Federation); 2-experimental group – fish were contained in water with 0.6 mg/l lead acetate concentration (10 times higher than fishery waters permissible exposure limit according to the laws of the Russian Federation). Exposure time was 4 hours. The blood samplings were taken from heart by syringe and placed in dry test tubes. After samplings centrifugation in non-hemolysed serum samples AP activity was assessed. The study revealed the decreasing trend of AP serum activity by 1.08% (21.89±0.24 IU/l) in 1-experimental group in compare with control group (22.13±0.78 IU/l). In case where the lead acetate concentration were 10 times higher than fishery waters permissible exposure limit were meaningful decreasing of AP activity (P ≤ 0.05) by 66.23% (17.42±0.63 IU/l) accordingly in 2-experimental group in compare with control group. In conclusion, a statistically significant decrease in the AP activity in fish blood serum was found after acetate concentration 10 times higher than the permissible exposure limit in fishery waters, according to the laws of the Russian Federation. We can suppose that the activity of this enzyme is the reason for the inhibitory effect of lead on liver tissue.

scholarly journals PSXI-12 Effect of copper on aminotransferases serum activity in European carp

2020 ◽  
Vol 98 (Supplement_4) ◽  
pp. 390-390
Author(s):  
Artem O Taraskin ◽  
Polina A Polistovskaia ◽  
Abram I Enukashvili ◽  
Anna I Kozitcyna ◽  
Alesya A Bakhta ◽  
...  
Keyword(s):  
Russian Federation ◽  
Copper Acetate ◽  
Activity Level ◽  
Control Group ◽  
Acetate Concentration ◽  
Permissible Exposure Limit ◽  
Serum Activity ◽  
Exposure Limit ◽  
The Russian Federation ◽  
Experimental Group

Abstract The aim of this study is to assess toxic influence of heavy metals in fish. This research was intended to analyze aminotransferases (ALT, AST) serum activity under the influence of various copper concentrations in European carp. Intracellular enzymes activity level elevation in serum is a sign of hepatocites toxic destruction and an indicator of profound cell alterations. In this experiment 3 groups of fish (European carp) were formed, 10 fish in each group: control group; 1-experimental group – fish were contained in water with 0.01 mg/l copper acetate concentration (10 times higher than fishery waters permissible exposure limit according to the laws of the Russian Federation); 2-experimental group – fish were contained in water with 0.1 mg/l copper acetate concentration (100 times higher than fishery waters permissible exposure limit according to the laws of the Russian Federation). Exposure time was 4 hours. The blood samplings were taken from heart by syringe and placed in dry test tubes. After samplings centrifugation in non-hemolysed serum samples ALT and AST activities were assessed. The study revealed that there was meaningful elevation of ALT and AST serum activity (P ≤ 0.01) by 19.77% (25.68 ± 0,59 IU/l) and 16.84% (264.85 ± 7.6 IU/l) accordingly in 1-experimental group in comparison with control group (21.44 ± 0.72 IU/l и 226.68 ± 4.35 IU/l). In cases where the copper acetate concentration was 100 times higher than fishery waters permissible exposure limit there was meaningful elevation of ALT and AST serum activity (P ≤ 0.01) by 81,62 % (38.94 ± 0.83 IU/l) and 71.81% (389.46 ± 18.7 IU/l) accordingly in 2-experimental group in comparison with control group. After analyzing the received data, there were established meaningful aminotransferases serum activity elevation under the influence of various copper concentrations in European carp. This was possibly due to gluconeogenesis activation in order to support an adequate glucose level in conditions of catabolic process dominance during copper poisoning.

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