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Metal-induced asthma and chest X-ray changes in welders

100%
Wittczak T., Dudek W., Walusiak-Skorupa J., Świerczyńska-Machura D., Cader W., Kowalczyk M., Pałczyński C.
International Journal of Occupational Medicine and Environmental Health
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2012
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vol. 25
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issue 3
242-250
EN
Objectives: The aim of this study was to evaluate the coexisting factors and usefulness of diagnostic methods in metal-induced asthma in Polish welders. Materials and Methods: Examination of 50 welders occupationally exposed to metals and with suspicion of metal-induced asthma (group A), 100 welders occupationally exposed to metals but without suspicion of metal-induced asthma (group B), and two control groups (10 patients with atopic asthma and 10 healthy subjects) was carried out. Questionnaire survey, clinical examination, skin prick tests to common aeroallergens and metal salts, rest spirometry tests, X-ray, metacholine challenge and a single-blind, placebo controlled specific inhalation challenge tests with metals (or work-like conditions challenge tests) were performed. Results: In group A – in 9 cases we obtained positive results of specific inhalation challenge tests with metals (in 3 cases with nickel, in 4 cases with chromium, in 1 case with cobalt and in 1 case with manganese). Nine cases of metal-induced occupational asthma were recognized. In group B – only in one case we obtained positive results of work-like conditions challenge test (clinical and spirometry changes, eosinophil influx in induced sputum), which confirmed the diagnosis of occupational asthma. In most of examined welders (62%), pulmonary changes in chest X-ray images were noted. The statistical analysis revealed that working as a welder for more than 10 years is the coexisting factor of presence of chest X-ray changes (p- or q-type nodular changes or interstitial changes). Positive results of skin prick tests with metal salts were the coexisting factors of occupational asthma due to metals among examined group of welders. Conclusions: Specific inhalation challenge plays the key role in diagnostics of metal-induced asthma in welders. Pulmonary changes in chest X-ray were found in a significant percentage of examined welders.
2
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Multi-element analysis of urine using dynamic reaction cell inductively coupled plasma mass spectrometry (ICP-DRC-MS) - A practical application

88%
Brodzka R., Trzcinka-Ochocka M., Janasik B.
International Journal of Occupational Medicine and Environmental Health
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2013
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vol. 26
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issue 2
302-312
EN
Objectives: The method for the determination of As, Al, Cd, Ni, Pb (toxic elements) and Cr, Co, Cu, Fe, Mn, Zn (essential elements) in human urine by the use of Inductively Coupled Plasma Mass Spectrometry (quadrupole ICP-MS DRCe Elan, Perkin Elmer) with the dynamic reaction cell (DRC) was developed. Materials and Methods: The method has been applied for multi-element analysis of the urine of 16 non-exposed healthy volunteers and 27 workers employed in a copper smelter. The analysis was conducted after initial 10-fold dilution of the urine samples with 0,1% nitric acid. Rhodium was used as an internal standard. The method validation parameters such as detection limit, sensitivity, precision were described for all elements. Accuracy of the method was checked by the regular use of certified reference materials ClinCheck®-Control Urine (Recipe) as well as by participation of the laboratory in the German External Quality Assessment Scheme (G-EQUAS). Results: The detection limits (DL 3s) of the applied method were 0.025, 0.007, 0.002, 0.004, 0.004, 0.086, 0.037, 0.009, 0.016, 0.008, 0.064 (μg/l) for Al, As, Cd, Cr, Co, Cu, Fe, Mn, Ni, Pb, Zn in urine, respectively. For each element linearity with correlation coefficient of at least 0.999 was determined. Spectral interferences from some of the ions were removed using DRC-e with addition of alternative gas: methane for cobalt, copper, cadmium, chromium, iron, manganese, nickel and rhodium, and oxygen for arsenic. Conclusions: The developed method allows to determine simultaneously eleven elements in the urine with low detection limits, high sensitivity and good accuracy. Moreover, the method is appropriate for the assessment of both environmental and occupational exposure.
3
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Metal and Glass Small Finds from Yurta‑Stroyno, Season 2016: Selected Finds

75%
Studia Hercynia
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2017
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vol. 21
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issue 2
113-120
EN
The paper presents an overview of metal and glass small finds found during the final season of the Yurta‑Stroyno Archaeological Project in 2016. The basic data of the collection are presented here, as well as a preliminary classification and interpretation of the selected finds. The most frequent metal from the site is iron – featuring mainly elements of construction and different types of fittings. During the final season, parts of iron knives, a saw and metal or wood working tools such as a punch or an awl were found. A rare find is a miniature bronze axe head shaped pendant. The majority of the glass finds are body fragments of free‑blown vessels. The best represented shapes are cups, beakers, wide bowls and flasks. The group of glass beads features two main types: hexagonal and flat round beads. Several new fragments of raw glass and glass production waste were found during the field survey to supplement the previous‑year’s findings.
4
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Mapping Metal Rich Roman Cyprus: The Case for Object-Centred Approaches

75%
Hussein E.
Études et Travaux (Institut des Cultures Méditerranéennes et Orientales de l’Académie Polonaise des Sciences)
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2021
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issue 34
167-181
EN
This paper makes the case for developing ongoing research on Roman Cyprus’s metal profile by integrating object-centred approaches. It does so by focusing on the British Museum’s Cypriot collection as it contains a significant number of metal artefacts. The paper opens with a brief overview of key ancient evidence and the impact of recent, multidisciplinary approaches before introducing the collection and the data assembled for this case study. Assessment of this body of evidence highlights the benefits of undertaking systematic study of metalware related to Cyprus. A museological approach that focuses on the materiality of objects will also demonstrate how lines of enquiry can be developed to enhance current investigations of mining, metallurgy, and metal consumption across the island as well as shed further light on the role and cultural value of metals. This has huge implications for the study of Roman Cyprus and the wider Roman Mediterranean.
5
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‘A Marriage of the Aegean and the Orient’. Bronzes of the Siana Group Reconsidered

63%
Roháček M.
Studia Hercynia
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2018
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vol. 22
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issue 2
52-82
EN
The material culture of the so -called Eastern Aegean–Western Anatolian Interface during the Late Bronze Age has so far been analysed mainly through the prism of ceramic production and funerary evidence. Both of these classes of evidence indicate its special character. To test this proposition, this contribution focuses on a group of possibly indigenous metal finds. In particular, discussed here is the so -called Siana Group of flanged swords and knives with a characteristic narrow tang at the end of the handle. They were first categorised by Nancy Sandars in 1963 and show an interesting mixture of Aegean and Near Eastern typological traits. Both the Siana swords and the Siana knives occur almost exclusively in the Eastern Aegean–Western Anatolian Interface, although some of the knives have been found also outside this particular region. The Siana Group, originally dated to LH IIIB–IIIC, can now be more securely dated to the LH IIIA2–IIIB periods. It seems that most of these metals came from graves, while some knives were retrieved from settlement contexts as well. It is argued here that this group presents a unique local product of the area of the Eastern Aegean–Western Anatolian Interface, incorporating and transforming both Aegean and Near Eastern influences. Moreover, other examples of earlier or contemporary Western Anatolian finds of swords that have shapes that did not typically occur in the Aegean are presented here as well, as they illustrate the local background of weapon styles the LH II/III turn in the area.
6
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The Stroyno Archaeological Project, Report on the Season 2015

51%
Tušlová P., Weissová B., Bakardzhiev S., Čisťakova V., Janouchová P., Frecer R.
Studia Hercynia
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2015
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vol. 19
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issue 1-2
243-261
EN
The second year of the Yurta‑Stroyno Archaeological Project continued in the excavation of the area selected the previous year. The stone foundations were further uncovered in their continuation both to the east and to the west of the investigated area. Disrupted soil from Rooms A and B, previously excavated by robbers, was cleaned to the sterile soil. The area of the settlement core was selectively walked while creating a geodetic site grid. During the random survey, several areas of outstanding surface concentrations were selected for future investigation. Further, documentation of the finds from the two years of the excavation progressed, with their selection given in this report.
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