- Type of paper
: Book
Title: Selected synthetic organic fibres
- Authors:
- Meek, M.E.
- Valić, Fedor (51484)
- Editors
- ,
- ,
- ,
- ,
- Valić, Fedor (51484)
Publisher: World Health Organization
Year: 1993
Number of pages: 100
Number of references: 76
Language: engleski
Summary: Analysis is presented of physical and chemical properties
ofcarbon/graphite, aramid, and polyolefin fibres, and the human
andenvironmental exposure levels. Mechanism of deposition,clearance,
translocation and biopersistance, and health effectsin animals and humans
are described. Data suggest low level ofoccupational and non-occupational
exposures with dermatitis beingthe most frequent health effect. However,
longterm exposure tokevlar fibres have caused lung fibrosis and cystic
keratinizingsquamous cell carcinomas in rats.
Keywords: airborne synthetic organic fibres, carbon/graphite fibres, aramidfibres, polyolefin fibres, dermatitis, lung fibrosis, cystickeratinizing squamous cell carcinoma
- Type of paper
: Book
Title: Health risks associated with chrysotile asbestos
- Editors
- ,
- Gibbs, Graham W.
- Valić, Fedor (51484)
- Browne, K.
Publisher: Int.Comm.Occ.Hlth & Int.Prog.Chem.Safety
Year: 1993
Number of pages: 76
Number of references: 98
Language: engleski
Summary: Health risk analyses have been performed of chrysotile,the
only asbestos variety which could possibly be maintained under defined
conditions. Emphasis is given to interactions between chrysotile and human
and animal tissues, levels of current exposures, and the use of biological
indicators. The relationships 'exposure-mortality' and 'exposure-morbidity'
in animals and humans are analysed, taking into consideration changes on
the bronchi, lung parenchyma and pleura, and fibrosis, carcinoma and
mesothelioma in particular. Cellular and tissue responses to chrysotile are
considered.
Keywords: chrysotile exposure, fibrosis, bronchial carcinoma, pleural and peritoneal mesothelioma, chrysotile health risk assessment
- Type of paper
: Book
Title: Environmental Health Criteria for Chrysotile
- Authors:
- ,
- ,
- ,
- Valić, Fedor (51484)
- Beritić Stahuljak, Dunja (3264)
- Editors
- ,
Publisher: World Health Organization
Year: 1995
Number of pages: 150
Number of references: 474
Language: engleski
Summary: In view of contradictory evaluations of world scientists of
feasibility of further use of chrysotile as the only form of asbestos, a
detailed analysis of recent information is given. Data are presented on
physical and chemical properties,methods of identification and quantitative
analysis of fibres in air and tissues, sources of occupational and
environmental exposures, behaviour of fibres of chrysotile in air and
respiratory tract, and effects on animals and cells as well as effects on
humans. Results of quantitative risk assessments for human populations are
analyzed, but definitive conclusions could not be derived.
Keywords: chrysotile asbestos, deposition, clearance, carcinoma, mesothelioma, risk assessment
- Type of paper
: Paper in journal
Title: Ventilatory lung function changes in family members of
asbestos workers
- Authors:
- Valić, Fedor (51484)
- Beritić Stahuljak, Dunja (3264)
- CIGULA, MIRA (6870)
Journal: ACTA MEDICA IUGOSLAVICA (sada Croatica)
Number: 3
ISSN: 0375-8338
Volume: 44
Year: 1990
Pages: from 205 to 209
Number of references: 13
Language: engleski
Summary: There was no difference between prevalence of any
respiratory symptom (chronic cough, chronic phlegm, chronic
bronchitis,dyspnea) in 53 female or 61 male family members of asbestos
workers and the matching members of the general population. No difference
was found between the measured and predicted values of FVC, FEV1 or FEF50
in nonsmoking or smoking men. In women, the measured values were
significantly lower. Airborne chrysotile concentrations in houses of
asbestos workers were found to be significantly higher than in homes of
general population.
Keywords: non-occupational asbestos exposure, nonspecific lung diseases,ventilatory lung function
- Type of paper
: Paper in journal
Title: Health effects in occupational exposure to formaldehyde at
levels lower than the threshold limit value
- Authors:
- Markotić-Bogavčić, Gordana
- CIGULA, MIRA (6870)
Journal: Medica Jadertina
Number: 1
Volume: 23
Year: 1993
Pages: from 177 to 181
Number of references: 8
Language: hrvatski
Summary: In 15 workers exposed to mean formaldehyde concentration
0.21mg/m3 the prevalence of both conjunctivitis and pharyngitis was found
to be 100%, while in 25 workers at 0.08 mg/m3 the prevalence of
conjunctivitis was 100% and that of pharyngitis 48%. A significantly
increased prevalence of both diagnoses was found in subjects exposed to
formaldehyde compared to 48 controls in spite of the exposure of the former
to maximum one-third of TLV. This finding raises doubts as to the validity
of the currently employed TLV for formaldehyde.
Keywords: formaldehyde, TLV, conjunctivitis, pharyngitis
- Type of paper
: Paper in journal
Title: Relationship between cumulative occupational exposure to
asbestos fibres and respiratory symptoms
- Authors:
- ,
- ,
- ,
- Beritić Stahuljak, Dunja (3264)
- Valić, Fedor (51484)
- ukin, Eugenija (56030)
Journal: Acta medica Croatica
Number: 4
ISSN: 0375-8338
Volume: 45
Year: 1991
Pages: from 283 to 295
Number of references: 21
Language: engleski
Summary: The prevalences of chronic cough, chronic phlegm, chronic
bronchitis and dyspnea were significantly higher in 1127 asbestos workers
than in 593 controls, in nonsmokers and smokers. The prevalences increased
with cumulative exposure to total airborne particles and with length of
employment, but did not increase with cumulative exposure to airborne
asbestos fibres. The finding leads to the conclusion that the development
of chronic respiratory symptoms is not the consequence of the specific
influence of airborne fibres but rather of total particles.
Keywords: cumulative asbestos exposure, prevalence of respiratory symptoms
- Type of paper
: Paper in journal
Title: Is there a difference in respiratory response to asbestos
between women and men?
- Authors:
- Valić, Fedor (51484)
- Beritić Stahuljak, Dunja (3264)
- CIGULA, MIRA (6870)
Journal: Acta medica Croatica
Number: 3
ISSN: 0375-8338
Volume: 46
Year: 1992
Pages: from 151 to 154
Number of references: 10
Language: engleski
Summary: In spite of a greater mean cumulative exposure to
asbestosfibres, with practically equal mean cumulative exposure to
totalparticles, the prevalences of chronic respiratory symptoms werenot
higher in 70 women compared to 98 men. Comparing thefrequencies of
examinees having ventilatory function parameterslower than 75% of the
normal values, the frequencies in womenwere not found to be higher.
Keywords: asbestos exposure, female workers, respiratory symptoms,ventilatory lung function
- Type of paper
: Paper in journal
Title: Interconvertibility of asbestos fibre count concentrations
recorded by three most frequent methods
- Authors:
- Valić, Fedor (51484)
- CIGULA, MIRA (6870)
Journal: Arhiv za higijenu rada i toksikologiju
Number: 4
ISSN: 0004-1254
Volume: 43
Year: 1992
Pages: from 359 to 364
Number of references: 18
Language: engleski
Summary: Linear regression analyses were performed of the membrane
filter on the konimeter and thermal precipitator count
concentrations,resp., in asbestos textile manufacturing, asbestos cement
production, mining and milling. The slope coefficients of regressions
differed significantly on the basis of which it is concluded that no single
conversion factor can be used to reliably interconvert the count
concentrations obtained by different methods; a separate conversion factor
must be derived for each technological process.
Keywords: asbestos count conversions, asbestos determination,asbestos fibres
- Type of paper
: Paper in journal
Title: Is chrysotile asbestos exposure a significant health risk
to the general population?
- Authors:
- Valić, Fedor (51484)
- Beritić Stahuljak, Dunja (3264)
Journal: Central European Journal of Public Health
Number: 1
Volume: 1
Year: 1993
Pages: from 26 to 30
Number of references: 41
Language: engleski
Summary: The main unresolved issues are discussed. Average
chrysotile concentrations in buildings are low except where damaged friable
chrysotile is present. Risk estimates for general population are low
compared to many other environmental risks. Possible adverse effects of
paraoccupational exposures in domestic environments cannot be excluded. In
view of very shallow slopes in the exposure-response relationships for lung
cancer risk, exposure to airborne chrysotile-containing friction materials
is not likely to be a significant health risk.
Keywords: chrysotile asbestos, exposure in buildings, exposure to asbestos friction products
- Type of paper
: Paper in journal
Title: Is the removal of fibrous insulating material from
buildings necessary?
- Authors:
- CIGULA, MIRA (6870)
- Valić, Fedor (51484)
Journal: Arhiv za higijenu rada i toksikologiju
Number: 4
ISSN: 0004-1254
Volume: 41
Year: 1990
Pages: from 357 to 361
Number of references: 15
Language: hrvatski
Summary: There was no difference between the mean concentrations of
respirable mineral fibres measured before (0.0038 and 0.0031 f/cm3, resp.)
and about two months after the substitution (0.0039 and 0.0028 f/cm3,
resp.), suggesting that the substitution was unnecessary. However, the
concentrations measured two and eight days after the substitution were
significantly elevated (0.0095 and 0.0054 f/cm3, resp.), suggesting that
the unnecessary disturbance of the insulating material caused an increase
of exposure levels of inhabitants.
Keywords: respirable mineral fibers, removal from buildings
- Type of paper
: Paper in proceedings
Title: Some health aspects of environmental asbestos exposure
- Authors:
- Valić, Fedor (51484)
- ,
Proceedings title: Proc.International Colloquium on Dust Measurement Techniquesand Strategy
Language: engleski
Place: Budapest, Mađarska
Year: 1991
Pages: from 24 to 45
Meeting: International Colloquium on Dust Measurement Techniques and Strategy
Held: from 11/19/91 to 11/21/91
Summary: An overview of main health consequences is presented
emphasizingthe errors in the main current published quantitative
riskassessments. Mathematical proofs are given of the errors in the
estimated number of projected cancer cases in the risk assessmentof the US
EPA, and the errors due to disregarding of the role ofasbestos fibre type
and size. The proof is also given ofunacceptable variations in the risk
estimates due to conversionof units of asbestos concentration.
Keywords: asbestos exposure, environment, health aspects, health risk assessment
Other:
- Type of paper
: Paper in proceedings
Title: Asbestosis among Ship-repairing Workers and Working
Capacity
- Authors:
- Zrilić, Ivan
- CAR, ZLATAN (104371)
- Beritić, Tihomil
- Barbarić, Stjepan
- Livaković, Vjekoslav
Proceedings title: Medicina rada u obnovi domovine
Language: hrvatski
Place: Zagreb
Year: 1992
Pages: from 71- to 75 0
Meeting: Medicina rada u obnovi domovine
Held: from 10/29/92 to 10/30/92
Summary: The chronology of asbestos-related diseases abroad and in
Croatia is presented. The results of a study of asbestos disease performed
among workers employed in a Croatian ship-repairing yard are discussed. The
presence of pleural thickening was observed in 9 out of 61 workers; in 6 of
those 9 patients pleural thickening was bilateral. The problems are
emphasized concerning the criteria for the assessment of working capacity.
Keywords: asbestosis, pleural thickening,ship-repairing workers,assessment of working capacity
- Type of paper
: Paper in proceedings
Title: Influence of Exposure Conversions and Activity-specific
Exposure-response Relationships on the Chrysotile Asbestos Risk Assessment
- Authors:
- Valić, Fedor (51484)
Proceedings title: Health Risks from Exposure to Mineral Fibres - An International Perspective
Language: engleski
Place: North York, Ontario, Canada
Year: 1993
Pages: from 129 to 135
Meeting: International Symposium on Health Effects of Low Exposure to Fibrous Materials
Held: from 11/24/91 to 11/27/91
Summary: Uncertainties included in the published current chrysotile
risk assessments are discussed. Particular attention is given to
differences in the values of slopes in published risk equations developed
for different industrial activities. Errors introduced into risk esttimates
thropugh unjustified exposure conversions are analysed. Threshold limit
values for chrysotile are calculated on the basis of some well-known risk
estimates and their practical unfeasibility are demonstrated
mathematically.
Keywords: chrysotile asbestos, health risk assessment, exposure-response relationships
- Type of paper
: Summary in proceedings
Title: Current ecological approaches to asbestos
- Authors:
- ,
- Valić, Fedor (51484)
Proceedings title: 4.delovni sestanek o azbestu
Language: hrvatski
Place: Ljubljana, Slovenija
Year: 1991
Pages: from 5 to 6
Meeting: 4.delovni sestanek o azbestu
Summary: Current views are presented on the significance of
ambientasbestos fibre exposure of general population, exposure inbuilding
environments with asbestos-containing constructionmaterials, and on
asbestos fibres in drinking water inparticular.
Keywords: asbestos in ambient air, exposure in environments with asbestos-containing elements, asbestos in drinking water
- Type of paper
: Summary in proceedings
Title: Unjustified removal of fibrous insulating materials from
buildings
- Authors:
- ,
- CIGULA, MIRA (6870)
- Valić, Fedor (51484)
Proceedings title: 4. delovni sestanak o azbestu
Language: hrvatski
Place: Ljubljana, Slovenija
Year: 1991
Pages: from 17 to 17
Meeting: 4.delovni sestanek o azbestu
Summary: Examples are presented of negative consequences of removal
offibrous insulating materials which instead of bringing aboutreduction of
airborne fibre concentrations caused increase offibre concentrations.
Keywords: mineral fibres, removal from buildings
- Type of paper
: Summary in proceedings
Title: Clinical Evaluation of Progression and Work Capacity in
Asbestosis
- Authors:
- Zrilić, Ivan
- Barbarić, Stjepan
- CAR, ZLATAN (104371)
- Beritić, Tihomil
Proceedings title: 4. delovni sestanek o azbestu
Language: hrvatski
Place: Ljubljana, Slovenija
Year: 1991
Pages: from 33 to 33
Meeting: 4. delovni sestanek o azbestu
Summary: On the basis of the assessment of the clinical status and
workability of workers in a shipyard the conclusion is drawn thatlittle or
no progression occurs at low asbestos exposure levelsor in cases of mild
asbestosis.
Keywords: asbestosis, clinical picture, assessment of working ability,progression
- Type of paper
: Invited lecture
Title: F.Valić: Asbestos Dust and Health - Environmental Issues
Institution: International Labour Organization
Year: 1991
- Type of paper
: Invited lecture
Title: F.Valić: Health Aspects of Exposure to Mineral a md
Synthetic Fibres
Institution: International Labour Organization
Year: 1994
- Type of paper
: Invited lecture
Title: F.Valić:Quantitative Evaluation of Risk and Public Policy
Institution: Fundacentro and International Labour Organization
Year: 1994
- Type of paper
: Invited lecture
Title: F.Valić: Asbestos and Health
Institution: International Labour Organization/Fundacentro
Year: 1994
- Type of paper
: Invited lecture
Title:
