Onboarding in Polish Enterprises in the Perspective of HR Specialists.

The article discusses onboarding in Polish enterprises analyzed from the perspective of HR specialists. The subject of consideration in the article falls within the area of broadly understood concern for the sustainable development and well-being of employees adjusting to a new work environment during their adaptation period. Actions taken by HR specialists have a significant impact on the behavior of employees and their well-being and satisfaction in the new workplace, including commitment and care for all stakeholders involved in building a positive psychological climate at the time of starting work.

Academic Teachers about Their Productivity and a Sense of Well-Being in the Current COVID-19 Epidemic.

This article looked at the situation of university teachers in Poland during the COVID-19 epidemic as a result of their need to work remotely. The study was conducted in the first stage (I) on 21 academicians and in the second stage (II) on 18 academicians. The study was conducted to determine the level of productivity of the study group in their online learning competencies in relation to their well-being, as well as during the height, and weakening of the epidemic.

Multilayer Nonwoven Inserts with Aerogel/PCMs for the Improvement of Thermophysiological Comfort in Protective Clothing against the Cold.

This study aimed to assess the developed nonwoven inserts with aerogel/PCM (phase change material) microcapsules for use in protective clothing against cold in terms of properties related to thermophysiological comfort. These inserts were obtained by the thermal bonding of a multilayer system consisting of needled-punched nonwovens and silica aerogel particles and/or PCM microcapsules evenly distributed between them. The influence of aerogel and PCM microcapsules on the basic physical properties of inserts, their microstructure, air permeability, and water vapor resistance was investigated and analyzed.

Cooling Effect of Phase Change Materials Applied in Undergarments of Mine Rescuers in Simulated Utility Conditions on Thermal Manikin.

The cooling effect of new undergarments (T-shirt) with PCM was measured using heat flux on a thermal manikin according to four tests variants: in T-shirt without PCM, in T-shirt with PCM, in T-shirt without PCM and with outerwear, in T-shirt with PCM and with outerwear. The tests were done in the climatic chamber under controlled conditions: t = 32 °C, RH = 70% and V = 1 m/s. The cooling effect was confirmed by thermograms taken by thermal imaging cameras located on the front and back of the manikin.

Experiencing Stress among Different Professional Groups in the Context of Their Age.

The subject of this article is the identification of coping with stress and experiencing stress in three groups of the same number of people, different in terms of their occupation: professional soldiers of the Polish Army with the rank of an officer, people employed in managerial positions, and specialists working in independent positions in the context of their age. The analysis of the literature and the research carried out refer to the concept of sustainable development. This indicates the need to take care of limiting excessive stress and improving the mental well-being of all employees, regardless of the demographic characteristics and nature of the work performed.

Effect of Protoberberine-Rich Fraction of L. on Endometriosis Regression.

Endometriosis is a gynecological disease defined by the presence of endometrial tissue outside the uterus. To date, the effective treatment of this disease is still based on invasive surgery or laparoscopy. L.

Novel nanosystems to enhance biological activity of hydroxyapatite against dental caries.

This work aimed to study for the first time to our knowledge the influence of the structure of the dental flosses (DF) coated by hydroxyapatite nanoparticles (HAP NPs) on the biological performance of saliva probiotic bacteria (S. salivarius), and human dermal and osteoblast-like cells. We used three types of HAP@DF composites (based on two unwaxed dental flosses - "fluffy" and "smooth", and one waxed "smooth") with different morphologies.

Evaluation of Functionality of Warning System in Smart Protective Clothing for Firefighters.

Recent achievements in the field of miniaturization of electronics have led to a significant interest in its application into the protective clothing for firefighters in order to improve their safety and health. However, up to now there are not any requirements and standardized test methods enabling confirmation of safety of use and functionality of these systems in work environment. In the paper, an importance of evaluation of such smart wearable system in predicted utility conditions is highlighted.

Evaluation Methodology of a Smart Clothing Biomechanical Energy Harvesting System for Mountain Rescuers.

The article presents a methodology developed for the evaluation of biomechanical energy harvesting systems that permits avoiding long-duration outdoor tests while providing realistic input signals and preserving uniform conditions across repeated tests. It consists of two stages: transducer output signal recording and power conversion and storage system measurements. The proposed approach was applied to assess the usefulness of a commercial electromagnetic transducer for supplying a Global Positioning System (GPS) receiver used as an active component of a smart clothing dedicated for mountain rescuers.

Thermal Load of Mine Rescuer in the Underwear and Protective Clothing with Phase Change Materials in Simulated Utility Conditions.

A new set of underwear and protective clothing with phase change materials (PCM) for mine rescuers has been developed in order to increase their safety of work. It includes PCM pouches absorbing excess heat from the body. In order to evaluate thermal load of mine rescuers, physiological tests were carried out for three variants of possible use of the developed set of clothing: for mine rescuers wearing only the underwear with PCM; for a set of underwear and protective clothing; and for a complete set of clothing with closed-circuit compressed oxygen breathing apparatus.

Development of Smart Textile Materials with Shape Memory Alloys for Application in Protective Clothing.

The latest directions of research on the design of protective clothing concern the implementation of smart materials, in order to increase its protective performance. This paper presents results on the resistance to thermal factors such as flames, radiant heat, and molten metals, which were obtained for the developed smart textile material with shape memory alloys (SMAs). The laboratory tests performed indicated that the application of the designed SMA elements in the selected textile material system caused more than a twofold increase in the resistance to radiant heat (RHTI = 224 s) with an increase of thickness of 13 mm (sample located vertically with a load), while in the case of tests on the resistance to flames, it was equal to 41 mm (sample located vertically without a load) and in the case of tests on the resistance to molten metal, it was 17 mm (sample located horizontally).

Protoberberine compounds extracted from Chelidonium majus L. as novel natural photosensitizers for cancer therapy.

Background: It has been shown that secondary metabolites occur in Chelidonium majus L. (C. majus) crude extract and milky sap (alkaloids such as berberine, coptisine, chelidonine, chelerythrine, sanguinarine, and protopine) are biologically active compounds with a wide spectrum of pharmacological functions.

Assessment of the effectiveness of modular clothing protecting against the cold based on physiological tests.

At many workstations in a cold environment, protective clothing provided for the workers is characterized by inadequate thermal insulation, which results in an adverse impact of the cold environment on the worker's body. The purpose of this article is to present developed new ergonomic modular cold protective clothing, which allows for easy adaptation of the thermal insulation of clothing to a worker's individual needs. This clothing was compared in a laboratory study with the clothing having so far been used by workers in a cold environment using physiological and physical measurements, subjective ratings of the thermal state as well as a questionnaire for subjective assessment of the used clothing.

Mine rescuers' heat load during the expenditure of physical effort in a hot environment, using ventilated underwear and selected breathing apparatus.

Mine rescuers' heat load under the same physical effort load (25% of the maximal oxygen uptake), using three types of breathing apparatus, in newly developed heat-removing underwear and outerwear was assessed for typical work conditions of mine rescuers, under milder and harsher ambient conditions of 32 and 38 °C, respectively, both at relative humidity of 85% and air velocity of 1.0 m/s. Expending physical effort at the same load while using different kinds of breathing apparatus resulted in a similar heat load.

Synthesis of G0 aminopolyol and aminosugar dendrimers, controlled by NMR and MALDI TOF mass spectrometry.

Organic compounds designed to serve as stable dendrimer cores were developed. A series of aminosugar and amino polyol containing G0 dendrimers were synthesized. The reaction mixture composition was checked by MALDI TOF mass spectrometry, while that of purified products - by H and C NMR combined with 2D NMR spectroscopy as well as MALDI TOF MSMS mass spectra.

Assessment of an active liquid cooling garment intended for use in a hot environment.

This paper discusses the construction of a designed active liquid cooling garment (LCG) that has been developed in order to reduce thermal discomfort of persons working in hot environments. It consists of clothing with a tube system distributing a cooling liquid, a sensor measuring the microclimate under the clothing, and a portable cooling unit with a module controlling the temperature of the cooling liquid depending on the microclimate temperature under the clothing. The LCG was validated through tests on volunteers in a climatic chamber at 30 °C, a relative humidity of 40%, and an air movement rate of 0.

Mass Spectrometric Study of Colchicine and its Synthetic Derivatives 10-Alkylthiocolchicines.

The mass spectra behaviour of five 10-alkylthiocolchicine derivatives has been studied using electron ionization and MALDI-TOF MS techniques. Fragmentation patterns of colchicines derivatives after EI have been investigated, as well as mass spectra after collision-induced dissociation (CID) MALDI have been used to gain structural information. To the best of our knowledge, this is the first time that the MALDI MS/MS data for colchicine and its alkylthio derivatives have been described.

Electron ionization-induced mass spectral study of 5-methylenecarboxy (5-methylenecarbonylalkoxy)-2-thio-(2-alkoxycarbonylalkylthio)uracils and 3-oxothiazolo-[3,2-a]-pyrimidin-6-methylenecarbonylalkoxy-5-ones.

Electron ionization (EI) mass spectral fragmentation of 2-thio-5-methylenecarboxy (5- methylenecarbonylalkoxy)uracils and their derivatives, five new 2-alkoxycarbonylalkylthio-5-methylenecarboxy (5- methylenecarbonylalkoxy)uracils and three new 3-oxo-thiazolo-[3,2-a]-pyrimidine-6-methylenecarbonylalkoxy-5-ones are investigated. Fragmentation pathways whose elucidation is assisted by accurate mass measurements and metastable transitions are established. The correlations between the abundances of the selected fragment ions and the molecular ions of investigated compounds are discussed.

Physiological effects of a modification of the construction of impermeable protective clothing.

This study was conducted to improve the construction of impermeable clothing protecting against liquid chemical agents in order to lower the thermal strain caused by the clothing during work. Previous studies indicated that light work in a hot environment in this kind of clothing could last 30 min only. We propose a modification of the construction; new models of protective clothing were tested in wear trials.

Differentiation of 2-alkylthioorotic acids, methyl and ethyl 2-alkylthioorotates and hydrazides of 2-alkylthioorotic acids by using electron ionization mass spectra.

Electron ionization mass spectra of 12 derivatives of 2-thioorotic acid have been discussed and general fragmentation routes of their molecular ions have been proposed. The compounds under discussion were three groups of four chemical species (2-alkylthioorotic acid, methyl 2-alkylthioorotate, ethyl 2-alkylthioorotate and 2- alkylthioorotic hydrazide) each with the same relative molecular mass. The comparison of selected ions relative abundances and their correlation with the abundance of molecular ions enable differentiation between isomeric or isobaric species in this class of compounds.