Study of The Impact of Users' Features on Dimensional Allowances Resulting from the Use of Personal Protective Equipment.

Up-to-date anthropometric data on the human population are needed for designing safe and ergonomically efficient workplaces. An important determinant of safety and ergonomic comfort at work is knowledge of the value of dimensional allowances (DAs) when using personal protective equipment (PPE) as the dimensions and space occupied by workers increase. This is particularly important in environments characterized by spatial constraints.

Studies of Acceleration of the Human Body during Overturning and Falling from a Height Protected by a Self-Locking Device.

The use of individual fall protection equipment is one of the most commonly applied methods of protecting workers whose worksites are located above the floor level. The safety of the user in such a situation depends on both the proper selection and correct use of such equipment. Additionally, aspects such as minimizing the free-fall distance before the fall arrest, as well as quick notification of an accident and efficient rescue operation, are important factors influencing safety.

Procedure for Determining Dimensional Allowances for PPE Using 3D Scanning Methods.

The article describes the importance of dimensional allowances, which are a consequence of the use of personal protective equipment (PPE) for work safety. The method of 3D scanning was proposed for determining the dimensional allowances which has been preliminary validated. Two geometric solids (a cylinder and a cuboid) were used to approximate the minimum space around the person using PPE.

The Influence of Intraocular Lenses (IOLs) on the Properties of Filters Protecting Human Eyes against Optical Radiation in the Work Environment.

Under the specific illumination conditions of many workplaces, e.g., in the metallurgical industry, decreased lighting may impair workers' vision and, as a result, their productivity.

Modelling and Evaluation of the Absorption of the 866 MHz Electromagnetic Field in Humans Exposed near to Fixed I-RFID Readers Used in Medical RTLS or to Monitor PPE.

The aim of this study was to model and evaluate the Specific Energy Absorption Rate (SAR) values in humans in proximity to fixed multi-antenna I-RFID readers of passive tags under various scenarios mimicking exposure when they are incorporated in Real-Time Location Systems (RTLS), or used to monitor Personal Protective Equipment (PPE). The sources of the electromagnetic field (EMF) in the modelled readers were rectangular microstrip antennas at a resonance frequency in free space of 866 MHz from the ultra-high frequency (UHF) RFID frequency range of 865-868 MHz. The obtained results of numerical modelling showed that the SAR values in the body 5 cm away from the UHF RFID readers need consideration with respect to exposure limits set by international guidelines to prevent adverse thermal effects of exposure to EMF: when the effective radiated power exceeds 5.

Analysis of selected mechanical parameters for foamed materials with non-Newtonian liquid characteristics in terms of their use in aspects of protective helmets.

This article presents the results of measurements of mechanical parameters for foamed materials with non-Newtonian liquid characteristics (energy suppressed in the sample, force transferred to the anvil during the dynamic tests). In dynamic studies, the following characteristics were determined: the pressure forces exerted on the anvil as a function of the sample deflection during the impact, the energy suppressed in the sample depending on the temperature and the energy suppressed in the sample depending on the sample density. Foamed materials with non-Newtonian characteristics are currently used as elements protecting against impacts.

[Potential impact of colors of filters used in sunglasses on the melatonin suppression process].

Background: In this article the methods for determining spectral transmittance of optical radiation in the visible waveband range through selected materials used as optical filters against solar glare were described.

Material And Methods: Transmittance coefficients specified for the fraction of light passing through tested filters, taking into account the mechanism of eye adaptation to daylight and night vision and the melatonin suppression process were compared for 4 dyed sunglass filters.

Results: The values of transmittance coefficients specified for wavelength bands, 380-780 nm (for visible range) and 425-560 nm (for blue light range affecting the melatonin suppression process) were determined.

Analysis of the selected mechanical parameters of coating of filters protecting against hazardous infrared radiation.

This article presents a comparison of the test results of selected mechanical parameters (hardness, Young's modulus, critical force for delamination) for protective filters intended for eye protection against harmful infrared radiation. Filters with reflective metallic films were studied, as well as interference filters developed at the Central Institute for Labour Protection - National Research Institute (CIOP-PIB). The test results of the selected mechanical parameters were compared with the test results, conducted in accordance with a standardised method, of simulating filter surface destruction that occurs during use.

Glistening phenomenon in acrylic hydrophobic intraocular lenses – how do perioperative factors and concomitant diseases effect it’s incidence and severity.

The aim: To evaluate the effect of selected perioperative factors and concomitant diseases on glistening of acrylic hydrophobic intraocular lens after phacoemulsification in a prospective study. Material and methods: 252 consecutive patients undergoing phacoemulsification with IOLs AcrySof IQ implantation were enrolled. The relationship between glistening and such factors as time of the surgery, the mean power and time of ultrasound energy, temperature of infusion fluids, type of cartridge, mean power of intraocular lens, trypan blue staining as well as some concomitant systemic and local diseases were analysed.

Light transmission through intraocular lenses with or without yellow chromophore (blue light filter) and its potential influence on functional vision in everyday environmental conditions.

In this research the factors used to evaluate the light transmission through two types of acrylic hydrophobic intraocular lenses, one that contained yellow chromophore that blocks blue light transmission and the other which did not contain that filter, were defined according to various light condition, e.g., daylight and at night.

Analysis of the selected optical parameters of filters protecting against hazardous infrared radiation.

The paper analyses the selected optical parameters of protective optic filters used for protection of the eyes against hazardous radiation within the visible (VIS) and near infrared (NIR) spectrum range. The indexes characterizing transmission and reflection of optic radiation incident on the filter are compared. As it follows from the completed analysis, the newly developed interference filters provide more effective blocking of infrared radiation in comparison with the currently used protective filters.

[Modern knowledge based about glistening phenomenon in artificial intraocular lenses].

Glistening formations is relatively common phenomenon in acrylic IOLs that appears as a tiny clear to white sparkling areas within the material of the lens optic. While the process of glistening include not only monofocal IOLs but also multifocal IOLs and phakic IOLs and even can occur in IOLs made of other materials, problem seems to be clinically crucial. Publication comprises contemporary knowledge about glistening phenomenon.

Salvage brachytherapy for local recurrences of prostate cancer treated previously with radiotherapy.

Purpose: The aim of the study was to analyze early effects and toxicity of salvage high dose rate brachytherapy for local recurrences of adenocarcinoma of the prostate after external beam radiotherapy (EBRT).

Material And Methods: In MCS Memorial Institute of Oncology in Gliwice a research programme on salvage HDR brachytherapy for local recurrences of prostate cancer treated previously with EBRT has been ongoing since February 2008. The treatment consisted of 3 fractions of 10 Gy each given every 14 days.

Quantitative thermographic analysis of viscoelastic substances in an experimental study in rabbits.

Purpose: To measure the temperature parameters on the corneal surface during the delivery of standardized ultrasound energy assisted with ophthalmic viscosurgical devices (OVDs) or different temperatures of irrigating solutions in an experimental animal model.

Setting: Department of Ophthalmology and Visual Rehabilitation, Medical University of Lodz, and Central Institute for Labor Protection, National Research Institute, Warsaw, Poland.

Methods: Thirty rabbits (60 eyes) were randomly divided into 6 groups in which different OVD or balanced salt solutions (BSS) were used: group 1: Viscoat (sodium hyaluronate 3%-chondroitin sulfate); group 2: Provisc (sodium hyaluronate 1%); group 3: soft-shell technique; group 4: Celoftal (hydroxypropyl methylcellulose 2%); group 5: BSS 22 degrees C; and group 6: BSS 4 degrees C.

Investigations of single and multilayer structures using lock-in thermography--possible applications.

This paper presents a study of the possibilities of evaluating thermal parameters of single and multilayer structures using dynamic thermography. It also discusses potential uses of lock-in thermography. It presents a simulation of a periodic excitation of a multilayer composite material.

[Multicentric giant cell tumour. The case report].

The case of a 28 year old woman with multicentric giant cell bone tumours was described. Seven tumours' locations were found: Th3, the right and left humerus and tibia, the right femur and the right hip bone. All tumours were treated by a local resection with a following alcohol adjuvant therapy.

[Eye surface temperature after different techniques of local anesthesia--preliminary report].

Purpose: To assess temperature on the eye surface after local anesthesia due to phacoemulsyfication.

Material And Methods: 15 patients treated with local anesthesia: peribulbar - 5, retrobulbar - 5 and sub Tenon anesthesia. Mean temperature on both eye surface was assessed with termovision camera (Inframetrics 760) before surgery, 20 minutes and 1 hour after anesthesia.