Exhaled breath malondialdehyde, spirometric results and dust exposure assessment in ceramics production workers.

Introduction: The study aimed at measuring exhaled breath malondialdehyde (EBC-MDA) in workers exposed to dust containing silica and at its comparison with the non-exposed control group.

Material And Methods: The cross sectional, case-control study (N = 50) was performed in a tile and ceramics production factory in Yazd, Iran. EBC-MDA was quantified in exhaled breath of the participants by a lab made breath sampler.

Cancer Risk Assessment in Welder's Under Different Exposure Scenarios.

Background: Welders exposure to nickel and hexavalent chromium in welding fumes is associated with increase of cancer risk in welders. In this study we calculated cancer risk due to exposure to these compounds in welders.

Methods: The role of exposure parameters in welders on derived incremental lifetime cancer risk were determined by stochastic modeling of cancer risk.

Determinants of the accuracy of occupational hygiene expert judgment.

An experimental study was performed to determine the applicability and accuracy of occupational hygienist's expert judgment in occupational exposure assessment. The effect of tier 1 model application on improvement of expert judgments were also realized. Hygienists were asked to evaluate inhalation exposure intensity in seven operating units in a tile factory before and after an exposure training session.

Risk Perception of Nonspecific Low Back Pain among Nurses: A Qualitative Approach.

Background: Low back pain (LBP) is a common medical problem among nurses. A better understanding of nurses' experiences about LBP may help to develop preventative approaches. The study aimed to explore risk perceptions of nonspecific LBP among nurses in Bandar Abbas City, southern Iran.

The comparison of the effect of Transactional Model-based Teaching and Ordinary Education Curriculum- based Teaching programs on stress management among teachers.

Background & Objectives: Regarding the effect of teachers' stress on teaching and learning processes, the researchers decided to provide a stress management program based on Transactional Model to solve this teachers' problems. Thus, this study is going to investigate the effect of Transactional Model- based Teaching and the Ordinary Education Curriculum- based Teaching programs on Yazd teachers.

Methods: The study was a semi- experimental one.

Effect of zinc oxide nanoparticles on viability of human spermatozoa.

Background: The extensive use of different nanoparticles has raised great concerns about their occupational and biological safety.

Objective: The aim of this study was to evaluate the cytotoxic effect of zinc oxide nanoparticles (ZnO NPs) on viability of spermatozoa.

Materials And Methods: Semen samples were obtained from 15 healthy persons, and were analyzed using WHO guidelines.

Application of mathematical models in combination with Monte Carlo simulation for prediction of isoflurane concentration in an operation room theater.

Applicability of two mathematical models in inhalation exposure prediction (well mixed room and near field-far field model) were validated against standard sampling method in one operation room for isoflurane. Ninety six air samples were collected from near and far field of the room and quantified by gas chromatography-flame ionization detector. Isoflurane concentration was also predicted by the models.

Evaluation of Occupational Exposure of Glazers of a Ceramic Industry to Cobalt Blue Dye.

Background: Cobalt is one of the most important constituent present in ceramic industries. Glazers are the relevant workers when they are producing blue colored ceramic, causing occupational exposure to such metal. Through this study, urinary cobalt was determined in glazers in a ceramic industry when they were producing blue-colored ceramic glazes.

Changes in urinary catecholamines in response to noise exposure in workers at Sarcheshmeh Copper Complex, Kerman, Iran.

Noise is one of the most harmful agents in the workplace. In addition to the adverse effects of noise on the auditory system, as a stressor it may cause increased blood pressure, cardiovascular disease, anxiety, and impaired secretion of hormones. The purpose of this study was to evaluate changes in urinary catecholamines in workers exposed to industrial noise.

Evaluation and comparison of respiratory symptoms and lung capacities in tile and ceramic factory workers of Yazd.

Tile workers are exposed to dust particles and are susceptible to multiple pulmonary complications. Problems like asthma, chronic obstructive pulmonary symptoms, and silicosis are more common among them. As there are many tile factories in Yazd, we decided to evaluate the respiratory symptoms and lung capacities in these workers and compare them with controls.

Lectin histochemistry of normal human lung.

This study aimed to identify and specify the glycotypes of cell populations in normal human lung including types I and II pneumocytes, alveolar macrophages and mast cells, and also in the larger tissue structures of lung, including blood vessels and bronchi/bronchioles, using lectin- and immuno-histochemistry on paraffin-embedded tissue from 11 normal cases. The alveolar macrophages were anti-CD68 positive whereas the cells lining the alveolar walls were positive for cytokeratins. The alveolar macrophages in normal lung tissues showed a broad spectrum of staining for different subsets of N-linked saccharides, N-acetylgalactosamine, N-acetylglucosamine, terminal beta-D-galactose and sialyl groups.