scholarly journals Assessment of carcinogenic risks to workers of the main enterprises of the Irkutsk region

2019 ◽  
Vol 95 (12) ◽  
pp. 1163-1167 ◽  
Author(s):  
Natalia V. Efimova ◽  
V. S. Rukavishnikov ◽  
V. A. Pankov ◽  
A. N. Perezhogin ◽  
S. F. Shayakhmetov ◽  
...  
Keyword(s):  
Vinyl Chloride ◽  
Work Experience ◽  
Weighted Average ◽  
Working Hours ◽  
Ambient Air ◽  
Production Plant ◽  
Chromium Vi ◽  
Aluminum Smelters ◽  
Irkutsk Region ◽  
The Individual

The purpose of research is the assessment of the individual cancer risk (ICR) for workers of the basic occupations in key branches of industry of the Irkutsk region. There was executed the calculation of ICR levels for workers of the basic occupations of the aircraft industry, aluminum smelters and vinyl chloride production plants. The estimation of the exposure for workers was carried out according to long-term time-weighted average concentrations in the air of the working area, for the population - on annual average concentrations in the ambient air. To assess the risk that is not associated with the profession, the dose was calculated for the period of life (70 years). When calculating the toxicant doses in the working area there were used the “standard” indices ofpulmonary ventilation for adults, body weight, the work experience in the contact with carcinogens of 30 years, the number of days in the contact of 240, the duration of the working time 8 or 12 hours (in accordance with the working hours) duration. ICR for the Irkutsk population amounted of 3.08E-04, in Shelekhov - 4.8E-05, Sayansk - 1.1E-05. The amount of risk depends on the content offormaldehyde in all territories and chromium VI in cities of Irkutsk and Shelekhov. ICR for workers of basic occupations of studied plants in dozens of times are higher than for the urban population. Priority carcinogens are: chromium VI, nickel, formaldehyde, silicon dioxide -for the aircraft plant employees; 1,2-dichloretan, vinyl chloride - for the workers of vinyl chloride production plant; benzopyrene - for the aluminum smelter workers.

scholarly journals Biomonitoring of Workers Exposed to Volatile Organic Compounds Associated with Different Occupations by Headspace GC-FID

2020 ◽  
Vol 2020 ◽  
pp. 1-8
Author(s):  
Ghazala Yaqub ◽  
Almas Hamid ◽  
Nikhat Khan ◽  
Sunaina Ishfaq ◽  
Asha Banzir ◽  
...  
Keyword(s):  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Work Experience ◽  
Working Hours ◽  
Strong Relationship ◽  
Blood Samples ◽  
Petrol Station ◽  
Volatile Organic ◽  
Occupationally Exposed ◽  
The Individual

The present study has been undertaken to analyze the total accumulated burden of volatile organic compounds (VOCs) in blood of occupationally exposed workers. The headspace technique combined with gas chromatography with flame ionization detector was used for the quantitative analysis of the different volatile organic compounds (isopropyl alcohol, phenol, benzene, dichloromethane, ethanol, ethyl acetate, and toluene) in 80 blood samples from the workers belonging to different occupations i.e., shoe polish workers, thinner handlers, paint workers, furniture polish workers, petrol station attendants, textile dyeing workers, printing press workers, and dry port workers as biomonitoring is one of the most promising methods for analyzing the individual burden of VOCs. Another purpose of this study was to investigate the correlation between detected concentrations of VOCs and associated health issues reported by the workers of these professions. Results of the study revealed the presence of different VOCs in blood samples of approximately 70 workers out of 80, and statistical analysis proved a strong relationship between the reported work experience, working hours, and diseases and the detected concentrations of respective volatile organic compounds.

scholarly journals ASSESSMENT OF THE CARCINOGENIC RISK FOR THE POPULATION OF ULAN-UDE

2019 ◽  
Vol 98 (1) ◽  
pp. 90-93 ◽  
Author(s):  
N. V. Efimova ◽  
S. S. Khankharev ◽  
Vladimir R. Motorov ◽  
E. V. Madeeva
Keyword(s):  
Drinking Water ◽  
Ambient Air ◽  
Carcinogenic Risk ◽  
The Body ◽  
Social Significance ◽  
Chromium Vi ◽  
The Republic ◽  
Cadmium Lead ◽  
The Individual ◽  
The Impact

Introduction. Oncological pathology has a high medical and social significance, so it is important to study the conditions of its formation. The aim of the study was to evaluate the cumulative carcinogenic risk for the population of the administrative center of the Republic of Buryatia (Ulan-Ude). Material and methods. The identification of the carcinogenic hazard caused by the entry of chemical ingredients into the ambient air was carried out in 2005-2015. The exposure assessment is based on long-term average annual concentrations of carcinogens in the air, drinking water, food. Indices of comparative carcinogenic hazard (HCR) and individual carcinogenic risk (ICR) are calculated. Results. The huge engineering enterprises are sources of several substances with carcinogenic effects (formaldehyde, chrome VI, cadmium, niсkel, epichlorohydrin, etc.).The individual carcinogenic risk for residents of Ulan-Ude is included in the range unacceptable for the general population. The main pathway for chemical agents to enter the body is inhalation (79%). The greatest contribution to the total individual carcinogenic risk on admission from the air was made by formaldehyde, chromium VI and Benz(a)pyrene. Priority carcinogens coming from drinking water and food are arsenic, cadmium, lead. Conclusion. Results of the assessment of individual carcinogenic risk in Ulan-Ude indicate an unacceptable level of the impact on the population. The assessment has a number of uncertainties, which determines the need to further improve the monitoring system for carcinogenic hazards.

Carcinogenic risk assessment in population living in the ecologically problematic areas of Irkutsk region

2019 ◽  
pp. 117-121
Author(s):  
N. V. Yefi mova ◽  
I. V. Myl’nikova ◽  
M. V. Kuz’mina ◽  
L. G. Lisetskaya ◽  
Ye. Ye. Loznevaya
Keyword(s):  
Rural Area ◽  
Industrial Development ◽  
Ambient Air ◽  
Carcinogenic Risk ◽  
Environmental Objects ◽  
Irkutsk Region ◽  
Regional Population ◽  
Drinkable Water ◽  
Route Of Exposure ◽  
Risk Parameters

Irkutsk region is among territories of intense industrial development. Considerable part of the regional population is long exposed to chemical pollutants of environmental objects. Th e authors evaluated carcinogenic risk for the population of industrial centers and rural area. Findings are that maximal carcinogenic risk is carried by the urban population. Aggregated carcinogenic risk parameters evaluation proved inhalation to be a priority route of exposure. Irkutsk region appeared to have territories with high carcinogenic risk for public health. Among a list of chemicals in the ambient air are priority carcinogens: six-valent chromium and lead. The evidences necessitate measures on the risks minimization. Due to absent data on carcinogens content of drinkable water in some rural area, the necessity is to evaluate risk for the rural population by studies of drinkable water quality that does not match hygienic regulations, because oral one is a main route of carcinogens intake.

scholarly journals A Novel Multi-Criteria Group Decision-Making Approach Based on Bonferroni and Heronian Mean Operators under Hesitant 2-Tuple Linguistic Environment

Mathematics ◽  
2021 ◽  
Vol 9 (13) ◽  
pp. 1489
Author(s):  
Shahzad Faizi ◽  
Wojciech Sałabun ◽  
Nisbha Shaheen ◽  
Atiq ur Rehman ◽  
Jarosław Wątróbski
Keyword(s):  
Decision Making ◽  
Group Decision Making ◽  
Group Decision ◽  
Weighted Average ◽  
Aggregation Operators ◽  
Bonferroni Mean ◽  
Operational Laws ◽  
Geometric Bonferroni Mean ◽  
The Individual ◽  
Heronian Mean

Ambiguous and uncertain facts can be handled using a hesitant 2-tuple linguistic set (H2TLS), an important expansion of the 2-tuple linguistic set. The vagueness and uncertainty of data can be grabbed by using aggregation operators. Therefore, aggregation operators play an important role in computational processes to merge the information provided by decision makers (DMs). Furthermore, the aggregation operator is a potential mechanism for merging multisource data which is synonymous with cooperative preference. The aggregation operators need to be studied and analyzed from various perspectives to represent complex choice situations more readily and capture the diverse experiences of DMs. In this manuscript, we propose some valuable operational laws for H2TLS. These new operational laws work through the individual aggregation of linguistic words and the collection of translation parameters. We introduced a hesitant 2-tuple linguistic weighted average (H2TLWA) operator to solve multi-criteria group decision-making (MCGDM) problems. We also define hesitant 2-tuple linguistic Bonferroni mean (H2TLBM) operator, hesitant 2-tuple linguistic geometric Bonferroni mean (H2TLGBM) operator, hesitant 2-tuple linguistic Heronian mean (H2TLHM) operator, and a hesitant 2-tuple linguistic geometric Heronian mean (H2TLGHM) operator based on the novel operational laws proposed in this paper. We define the aggregation operators for addition, subtraction, multiplication, division, scalar multiplication, power and complement with their respective properties. An application example and comparison analysis were examined to show the usefulness and practicality of the work.

scholarly journals Flexibility Reserve of Self-Consumption Optimized Energy Systems in the Household Sector

Energies ◽  
2021 ◽  
Vol 14 (11) ◽  
pp. 3017
Author(s):  
Elias Dörre ◽  
Sebastian Pfaffel ◽  
Alexander Dreher ◽  
Pedro Girón ◽  
Svenja Heising ◽  
...  
Keyword(s):  
Unit Commitment ◽  
Programming Model ◽  
Weighted Average ◽  
Heat Pumps ◽  
Mixed Integer ◽  
Single Family ◽  
Unit Commitment Problem ◽  
Household Sector ◽  
The Future ◽  
The Individual

Energy generation and consumption in the power grid must be balanced at every single moment. Within the synchronous area of continental Europe, flexible generators and loads can provide Frequency Containment Reserve and Frequency Restoration Reserve marketed through the balancing markets. The Transmission System Operators use these flexibilities to maintain or restore the grid frequency when there are deviations. This paper shows the future flexibility potential of Germany’s household sector, in particular for single-family and twin homes in 2025 and 2030 with the assumption that households primarily optimize their self-consumption. The primary focus is directed to the flexibility potential of Electric Vehicles, Heat Pumps, Photovoltaics and Battery Storage Systems. A total of 10 different household system configurations were considered and combined in a weighted average based on the scenario framework of the German Grid Development Plan. The household generation, consumption and storage units were simulated in a mixed-integer linear programming model to create the time series for the self-consumption optimized households. This solved the unit commitment problem for each of the decentralized households in their individual configurations. Finally, the individual household flexibilities were evaluated and then aggregated to a Germany-wide flexibility profile for single-family and twin homes. The results indicate that the household sector can contribute significantly to system stabilization with an average potential of 30 negative and 3 positive flexibility in 2025. In 2030, the corresponding flexibilities potentially increase to 90 and 30 , respectively. This underlines that considerable flexibility reserves could be provided by single-family and twin homes in the future.

scholarly journals Factors Determining Income among Real Estate Salespersons: The Impacts of Individual Conditions, Franchises, and Regular Chains

2015 ◽  
Vol 7 (11) ◽  
pp. 94
Author(s):  
Chun-Chang Lee ◽  
Cheng-Huang Tung ◽  
Yu-Heng Lee ◽  
Shu-Man You
Keyword(s):  
Real Estate ◽  
Hierarchical Linear Modeling ◽  
Positive Impact ◽  
Working Hours ◽  
Education Level ◽  
Linear Modeling ◽  
Individual Level ◽  
The Individual ◽  
The Given ◽  
Regular Chains

<p>This study explores the factors that affect the incomes of real estate salespersons by applying hierarchical linear modeling (HLM) to investigate the incomes of real estate salespersons in Kaohsiung. A total of 510 questionnaires were distributed to large chain housing agencies, of which a total of 319 effective samples were retrieved from 54 branch stores, for an effective return rate of 62.55%. The empirical results showed that individual incomes vary significantly from store to store. About 4.8% of the variation in individual incomes was due to differences among different branch stores. The individual income of a real estate salesperson is also significantly affected by individual-level factors such as age, working hours, and working experience. The marginal impact of education level, age, working hours, and working experience on real estate salesperson income is moderated by the type of store at which the given salesperson works. In addition, a branch store’s location has a direct, significant, and positive impact on a real estate salesperson’s income.</p>

Maximal aerobic capacity at different levels of carboxyhemoglobin

1975 ◽  
Vol 38 (2) ◽  
pp. 300-303 ◽  
Author(s):  
S. M. Horvath ◽  
P. B. Raven ◽  
T. E. Dahms ◽  
D. J. Gray
Keyword(s):  
Critical Level ◽  
Aerobic Power ◽  
Ambient Air ◽  
Vo2 Max ◽  
Maximal Aerobic Capacity ◽  
Work Time ◽  
Maximum Aerobic Power ◽  
The Individual ◽  
Different Levels ◽  
Ambient Levels

Previous studies had indicated that maximum aerobic power (VO2 max) would be seriously impaired when HbCO levels were above 7% but was not altered if HbCO was around 2.7%. The present studies indicated that the critical level at which HbCO influenced VO2 max was approximately 4.3%. This was accompanied as in the above-noted studied with a reduction in total work time to the attainment of VO2 max. Two procedures to raise HbCO to appropriate levels were employed, i.e., a buildup wherin HbCO was incrementally increased by breathing ambient air containing 75 or 100 ppm CO and a bolus plus maintenance procedure. In the latter, HbCO was raised to the level attained in the buildup test by giving a “bolus” of CO followed by the continued inhalation of CO at a level to just maintain this level of HbCO regardless of the magnitude of the ventilation. Regardless of the mode of presentation, the decrement in VO2 max occurred at the same level of HbCO. These observations are of considerable significance, since it indicated that even low ambient levels of CO (23.7 ppm) would result in lowering maximum aerobic power if the individual had been previously exposed to CO such that the level was raised to this critical point.

scholarly journals Associations between Child and Family Level Correlates and Behavioural Patterns in School-Aged Children

Children ◽  
2021 ◽  
Vol 8 (11) ◽  
pp. 1023
Author(s):  
Ninoshka J. D’Souza ◽  
Miaobing Zheng ◽  
Gavin Abbott ◽  
Sandrine Lioret ◽  
Kylie D. Hesketh
Keyword(s):  
Latent Profile Analysis ◽  
Profile Analysis ◽  
Multinomial Logistic Regression ◽  
Working Hours ◽  
Target Population ◽  
Older Children ◽  
Increased Risk ◽  
Behavioural Patterns ◽  
Family Level ◽  
The Individual

Identifying correlates of behavioural patterns are important to target population sub-groups at increased health risk. The aim was to investigate correlates of behavioural patterns comprising four behavioural domains in children. Data were from the HAPPY study when children were 6–8 years (n = 335) and 9–11 years (n = 339). Parents reported correlate and behavioural data (dietary intake, physical activity, sedentary behaviour, and sleep). Behavioural data were additionally captured using accelerometers. Latent profile analysis was used to derive patterns. Patterns were identified as healthy, unhealthy, and mixed at both time points. Multinomial logistic regression tested for associations. Girls were more likely to display healthy patterns at 6–8 years and display unhealthy and mixed patterns at 9–11 years than boys, compared to other patterns at the corresponding ages. Increased risk of displaying the unhealthy pattern with higher age was observed at both timepoints. At 9–11 years, higher parental working hours were associated with lower risk of displaying mixed patterns compared to the healthy pattern. Associations observed revealed girls and older children to be at risk for unhealthy patterns, warranting customisation of health efforts to these groups. The number of behaviours included when deriving patterns and the individual behaviours that dominate each pattern appear to be drivers of the associations for child level, but not for family level, correlates.

scholarly journals The role of socio-professional teachers’ unions in a situation when the education system is being modernized

2020 ◽  
Vol 11 (2) ◽  
pp. 157-173
Author(s):  
Natalya V. Prokazina ◽  
Victor L. Lantsev
Keyword(s):  
Education System ◽  
Work Experience ◽  
Professional Growth ◽  
Effective Means ◽  
Professional Community ◽  
Active Participation ◽  
Value Orientations ◽  
National System ◽  
Teachers Unions ◽  
The Individual

This article points out that the process of modernizing the Russian Federation’s education system is aimed at developing such a professional body of teachers that would be prepared to solve issues associated with improving the quality of education. Given such a situation, the need arises for finding effective means of developing the professional competencies of teachers. One direction for modernizing the education system would be a national system of advancement for teachers, which postulates the need for creating the right conditions for the formal and informal training of educators. Given the context, socio-professional teachers’ unions turn out to be especially vital. The goal of this study was to identify how active participation in the practices of such organizations is connected to a young teacher’s professional growth. The study was conducted in Orel Province. Members of the regional young math teachers’ association were selected to be the object of research, with questionnaire survey used as the research method. The study focused on several aspects of teaching: professional difficulties faced by young educators, the mentorship system, an educator’s value orientations, professional growth. The results of the study allowed for identifying three groups of educators, the first one being young teachers who do not actively participate in educational events. The second group included teachers who do not share their own methodical expertise, but partake in seminars and master classes. The third group consists of educators who publically share their experience and are prepared to think of new ideas for future events. The article shows that the Association’s active participation in various events significantly affected the individual value orientations of trade professionals. Those educators who shared their publically work experience demonstrated a higher degree of professional aptitude in performing their jobs within the national system of teachers’ training. ctive efforts as members of the Association helped young educators quickly adapt within their professional community and establish firm social connections with their colleagues. The authors suggest the need for developing a system of mentorship in educational institutions, which would utilize resources provided by socio-professional teachers’ unions.

scholarly journals FAKTOR-FAKTOR YANG MEMPENGARUHI PENDAPATAN PEKERJA PADA KERAJINAN TENUN LELUNAKAN DI KECAMATAN MARGA KABUPATEN TABANAN

GANEC SWARA ◽  
2019 ◽  
Vol 13 (1) ◽  
pp. 50
Author(s):  
NI MADE TAMAN AYUK
Keyword(s):  
Work Experience ◽  
Working Hours ◽  
Education Level ◽  
Test Results ◽  
Positive Real ◽  
Level Of Education ◽  
Positive Effect

The purpose of this study was to find out: 1) the influence of working hours, education level and work experience partially on the income of workers of soft weaving craftsmen in Marga Subdistrict, Tabanan Regency, 2) the effect of working hours, education level and simultaneous work experience on income workers of soft weaving crafts in Marga Subdistrict, Tabanan Regency.     The test results show that: 1) working hours have a significantly positive positive effect on the income of workers of soft weaving craftsmen, with t count greater than t table (3.875> 1.696) and the significance is smaller than 0.05 (0.001 <0.05), 2) the level of education has no significant effect on the income of workers of soft weaving craftsmen, with t count smaller than t table (0.645 <1.696) and its significance is greater than 0.05 (0.524> 0.05) and 3) influential work experience partially positive real to the income of workers of soft weaving craftsmen in Marga Subdistrict, Tabanan Regency, with t count greater than t table (2,297> 1,696) and the significance is smaller than 0.05 (0.029 <0.05).     Simultaneously working hours, level of education and work experience significantly influence income. This can be seen from the F value of 18.195 greater than the F table value of 2.91

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