bluuebunny/crossref_metadata_2025 huggingface dataset:
Water structures on a Pt(111) electrode from ab initio molecular dynamic simulations for a variety of electrochemical conditions
Authors: Sakong Sung , Groß Axel
Published: January 2020

Water structures on a Pt(111) metal electrode critically depend on the electrochemical conditions, as shown by ab initio molecular dynamics simulations.
Self-assembled CoTiO3 nanorods with controllable oxygen vacancies for the efficient photochemical reduction of CO2 to CO
Authors: Xu Yong , Mo Jiang , Liu Qiang , Wang Xiaoxia , Ding Shujiang
Published: January 2020

CoTiO3 with oxygen vacancies was used as a cocatalyst for the photochemical reduction of CO2 to CO. The bond length of the double bond between C and O in CO2 increases from 1.17 Å to 1.25 Å in the activation step.
Hydrogen bonding and non-covalent interaction assisted nickel(0) catalysed reversible alkenyl functional group swapping: a computational study
Authors: Jain Pooja , Shukla Rahul K. , Pal Sourav , Avasare Vidya
Published: January 2020

An extensive DFT study is carried out to explore the mechanistic pathways involved in nickel(0) catalysed functional group swapping, where the less substituted N-tosyl allylamine transforms into a more substituted N-tosyl allylamine product.
White graphene quantum dots as electrochemical sensing platform for ferritin
Authors: Garg Mayank , Rani Reetu , Sharma Amit L. , Singh Suman
Published: January 2020

Novel use of hexagonal boron nitride quantum dots (hBN QDs) for electrochemical detection of ferritin.
Dietary methionine restriction improves the impairment of cardiac function in middle-aged obese mice
Authors: Han Le , Wu Guoqin , Feng Chuanxin , Yang Yuhui , Li Bowen , Ge Yueting , Jiang Yuge , Shi Yonghui , Le Guowei
Published: January 2020

Dietary methionine restriction (80%) improves the impairment of cardiac function caused by aging and obesity in mice.
Versatile hybrid acoustic micromixer with demonstration of circulating cell-free DNA extraction from sub-ml plasma samples
Authors: Conde Alvaro J. , Keraite Ieva , Ongaro Alfredo E. , Kersaudy-Kerhoas Maïwenn
Published: January 2020

A low-cost and easy to implement acoustic micromixer compatible with multiple fabrication technologies that can provide efficient and vigorous mixing.
Label-free quantitative proteomics of the MCF-7 cellular response to a ferritin–metallodrug complex
Authors: Pinto Gabriella , D'Acierno Mariavittoria , Illiano Anna , Petruk Ganna , Ferraro Giarita , Merlino Antonello , Monti Daria Maria , Godovac-Zimmermann Jasminka , Amoresano Angela
Published: January 2020

Schematic summary of the experimental workflow based on label-free quantitative proteomics.
Sunlight assisted degradation of a pollutant dye in water by a WO3@g-C3N4 nanocomposite catalyst
Authors: Borthakur Sukanya , Basyach Purashri , Kalita Lisamoni , Sonowal Karanika , Tiwari Amritanjali , Chetia Pubali , Saikia Lakshi
Published: January 2020

A series of WO3@g-C3N4 nanocomposites were prepared by following a facile, cost-effective chemical rote and characterized by different techniques. They are promising photocatalyst with high potential for solar light harvesting and environmental remediation.
Protein coating composition targets nanoparticles to leaf stomata and trichomes
Authors: Spielman-Sun Eleanor , Avellan Astrid , Bland Garret D. , Clement Emma T. , Tappero Ryan V. , Acerbo Alvin S. , Lowry Gregory V.
Published: January 2020

This is the first reported leaf structure targeting on live plants using coated nanoparticles.
Negative thermal expansion and the role of hybridization in perovskite-type PbTiO3-Bi(Cu0.5Ti0.5)O3
Authors: Fan Longlong , Li Qiang , Zhang Linxing , Shi Naike , Liu Hui , Ren Yang , Chen Jun , Xing Xianran
Published: January 2020

PbTiO3-BiMeO3 ferroelectrics have attracted much attention due to not only their extremely large polarization and piezoelectricity but also their controllable thermal expansion.
Acetaldehyde-modified-cystine functionalized Zr-MOFs for pH/GSH dual-responsive drug delivery and selective visualization of GSH in living cells
Authors: Lin Caixue , He Hailu , Zhang Yongqi , Xu Mingyue , Tian Feng , Li Ling , Wang Yingxi
Published: January 2020

In recent years, the construction of drug carriers that integrate diagnosis and treatment has become a new trend.
Retracted Article: Panax notoginseng saponins regulate VEGF to suppress esophageal squamous cell carcinoma progression via DVL3-mediated Wnt/β-catenin signaling
Authors: Chen Xiaoqi , Lv Zhuan , Zhang Chuanlei , Wang Xinting , Zhao Yunxia , Wang Xiao , Zheng Yuling
Published: January 2020

PNS regulate VEGF expression to suppress ESCC progression via the DVL3-mediated Wnt/β-catenin signaling pathway.
Partially charged platinum on aminated and carboxylated SBA-15 as a catalyst for alkene hydrosilylation
Authors: Chen Weiwen , Xie Zhikai , Liang Hui , Zhou Xinhua , Hu Wenbin , Shu Xugang
Published: January 2020

Ptδ+ was uniformly dispersed in aminated and carboxylated SBA-15 as a highly efficient catalyst for the hydrosilylation reaction.
Enhancement of sludge electro-dewaterability during biological conditioning
Authors: Li Yingte , Liu Yong , Yu Xiaoyan , Li Qian , Zhang Rui , Zhang Shuting
Published: January 2020

An effective deep dewatering process of coupling biological conditioning and electro-dewatering was proposed and analyzed.
Solvation dynamics ofN-substituted acrylamide polymers and the importance for phase transition behavior
Authors: Ortiz de Solorzano Isabel , Bejagam Karteek K. , An Yaxin , Singh Samrendra K. , Deshmukh Sanket A.
Published: January 2020

Functional groups present in thermo-responsive polymers are known to play an important role in aqueous solutions by manifesting their coil-to-globule conformational transition in a specific temperature range.
Stimuli-responsive phenothiazine-based donor–acceptor isomers: AIE, mechanochromism and polymorphism
Authors: Ekbote Anupama , Mobin Shaikh M. , Misra Rajneesh
Published: January 2020

Stimuli responsive phenothiazine-based donor–acceptor (D–A) molecules were designed and synthesized as positional isomers p-PTZ, m-PTZ and o-PTZ. A comprehensive comparative study of the electronic and photophysical properties has been performed to study the effect of positional change.
Multicolour barcoding in one MOF crystal through rational postsynthetic transmetalation
Authors: Ding Weilinsen , Zhao Lina , Yuan Xiaoyun , Zhang Lantian , Chen Baojun , Ju Qiang , Fang Zhenlan
Published: January 2020

Macroscopic color multiplexing on one-crystal MOFs has been achieved via single or several step postsynthetic transmetalation, showing discernable multiple emissions to a naked eye for the first time.
Photoactuators based on the dynamic molecular crystals of naphthalene acrylic acids driven by stereospecific [2+2] cycloaddition reactions
Authors: Liu Jiaxi , Ye Kaiqi , Shen Yanbing , Peng Jiang , Sun Jingbo , Lu Ran
Published: January 2020

The photomechanical effects of the dynamic molecular crystals of halogen-substituted naphthalene acrylic acids (1FNaAA, 1ClNaAA, 1BrNaAA, 1INaAA and 6BrNaAA) have been investigated.
Hydrophilic polyphosphoester-conjugated fluorinated chlorin as an entirely biodegradable nano-photosensitizer for reliable and efficient photodynamic therapy
Authors: Liu Zhiyong , Wu Mengsi , Xue Yudong , Chen Chao , Wurm Frederik R. , Lan Minbo , Zhang Weian
Published: January 2020

An entirely biodegradable nano-photosensitizer platform (PPE-FP2) was fabricated to avoid residual nanoparticles, thus realizing reliable and effective photodynamic therapy.
A family of phase masks for broadband coronagraphy example of the wrapped vortex phase mask theory and laboratory demonstration
Authors: Galicher R. , Huby E. , Baudoz P. , Dupuis O.
Published: January 2020

Context. Future instruments need efficient coronagraphs over large spectral ranges to enable broadband imaging or spectral characterization of exoplanets that are 108 times fainter than their star. Several solutions have been proposed. Pupil apodizers can attenuate the star intensity by a factor of 1010 but they only transmit a few percent of the light of the planet. Cascades of phase and/or amplitude masks can both attenuate the starlight and transmit most of the planet light, but the number of optics that require alignment makes this solution impractical for an instrument. Finally, vector phase masks can be used to detect faint sources close to bright stars but they require the use of high-quality circular polarizers and, as in the previous solution, this leads to a complex instrument with numerous optics that require alignment and stabilization.

Aims. We propose simple coronagraphs that only need one scalar phase mask and one binary Lyot stop providing high transmission for the planet light (> 50%) and high attenuation of the starlight over a large spectral bandpass (∼30%) and a 360° field-of-view.

Methods. From mathematical considerations, we find a family of 2D phase masks optimized for an unobscured pupil. One mask is an azimuthal wrapped vortex phase ramp. We probe its coronagraphic performance using numerical simulations and laboratory tests.

Results. From numerical simulations, we predict the wrapped vortex can attenuate the peak of the star image by a factor of 104 over a 29% bandpass and 105 over a 18% bandpass with transmission of more than 50% of the planet flux at ∼4λ/D. We confirm these predictions in the laboratory in visible light between 550 and 870 nm. We also obtain laboratory dark hole images in which exoplanets with fluxes that are 3 × 10−8 times the host star flux could be detected at 3σ.

Conclusions. Taking advantage of a new technology for etching continuous 2D functions, a new type of mask can be easily manufactured opening up new possibilities for broadband coronagraphy.
Numerical study of the melting and resolidification of the substrate during the impact of a ceramic droplet in a plasma spraying process
Authors: Driouche Mouloud , Rezoug Tahar , El Ganaoui Mohammed
Published: January 2020

The substrate melting can significantly improve the properties of plasma spray coatings. Indeed the adhesion of the projected particles to the substrate can be ameliorated by the substrate melting. In this article, a numerical model is developed to study the dynamics of fluids and heat transfer with liquid/solid phase change during impact of a fully melted alumina particle on an aluminum solid substrate, taking into account of the substrate melting. The model is based on solving the Navier-Stokes and energy equations with liquid / solid phase change. These equations are coupled with the fluid of volume method (VOF), to follow the free surface of the particle during its spreading and solidification. The finite volume method is used to discretize the equations in a 2D axisymmetric domain. A comparison with the published experimental results was carried out to validate this numerical model. Simulations were performed for different initial droplet diameters to study its effect on droplet spreading as well as on substrate melting. It has been observed that the substrate melting begins before the droplet spreads completely; the substrate melting reaches its maximum when the droplet is close to its total solidification. Droplet spreading and substrate melting are more important for large sizes droplets.
Aspects concerning the influence of the design of flameproof electric motors on maximum explosion pressures
Authors: Magyari Mihai , Moldovan Lucian , Sălăşan Diana
Published: January 2020

The research carried out in the specialized Laboratory of the National Institute for Research and Development in Mine Safety and Explosion Protection INSEMEX Petrosani has identified as causes for the occurrence of high pressure peaks in the case of electric motor enclosures, the internal volume, the geometrical shape of motor enclosures and the very intricate and complex internal arrangement of such motor enclosures (especially in the case of large motor enclosures), having in mind the tendency of motor manufacturers for chemical and petrochemical industry to manufacture motors having more complex geometrical shapes.
Assessing the heavy metal pollution level in Jiu Valley by bio-monitoring inferior plants – moss
Authors: Szollosi-Moţa Andrei , Prodan Maria , Nălboc Irina Vasilica , Şuvar Sonia Niculina
Published: January 2020

The analysis of the samples collected from residential areas and the proximity of the industrial areas of Jiu Valley was carried out by means of induced coupled plasma optical emission spectrometry (ICP-OES) after acid processing and mineralization of the samples. The pollution level has increased once with the industrial development and acceleration of urbanization processes in the human society. Of the pollutant-generating substances, heavy metals are of particular importance. The purpose of this paper is to highlight level of pollution by heavy metals using moss (inferior plants) in order to determine the degree of bioaccumulation. From the pollution point of view, zinc, cadmium and lead are of particular relevance, but the effects of other heavy metals have also been studied. The pollution effects last for a long time in waste dumps, areas polluted with heavy metals from fuel combustion processes, fossil fuels a.s.o. The analysis of the samples collected from residential areas and the proximity of the industrial areas of Jiu Valley was carried out by means of induced coupled plasma optical emission spectrometry (ICP-OES) after acid processing and mineralization of the samples.
Carbon steel carabiners improvements for use in potentially explosive atmospheres
Authors: Burduhos-Nergis Diana-Petronela , Bejinariu Costica , Toma Stefan-Lucian , Tugui Andrei-Catalin , Baciu Elena-Raluca
Published: January 2020

In cases where an explosive atmosphere contains several types of inflammable and/or combustible gases, steams or powders, the protection measures must be appropriate to the highest possible danger. However, the employer must pay special attention to the workplace and to any factor that can influence the working conditions, especially to those related to the workers. Therefore, any device, tool or equipment used by the human operator must possess special properties. In addition to protective clothing, workers who work at heights must receive personal protective equipment against falling that includes multiple linking elements known as carabiners. The carabiners used in this equipment must be made of non-sparking material. The aim of this paper is to propose a spark characteristic improvement of carbon steel used in carabiners manufacturing by deposition of zinc phosphate coating.
Coatings & linings for oil & gas pipelines – the most effective method of corrosion protection for aged pipelines
Authors: Tache Ion Antonio , Tache Carmen
Published: January 2020

Pipelines around the world are in danger due to ageing, deposits and corrosion. Leaky fittings and cracks are an environmental hazard and cause the loss of valuable resources such as drinking water, gas, or oil. The pipelines may get corroded internally due to the nature of the fluid flowing inside and due to various other factors. The environmental and societal impact of infrastructure failure is a primary consideration for today’s pipeline operators. Without implementing safety measures and having a corrosion control program, corrosion makes transporting hazardous material unsafe. There are many methods NACE (National Association of Corrosion Engineers) recommends as part of a successful corrosion control program to protect oil and gas pipelines. Coatings and linings applied to pipelines whether above or below ground and often used in combination with cathodic protection. Different linings may be used for internal corrosion protection, provided the lining material does not degrade following long-term exposure to the transported fluid, at the pipeline pressure and temperature conditions.
Conformity assessment of anti-hail rocket RAG-96.00 with security requirements
Authors: Gheorghiosu Edward , Bordoş Sorin , Enache Vasile , Ion Dănuţ
Published: January 2020

In Romania at present a significant part of agricultural crops, vineyards, fruit trees, etc. are protected against hail by implementation / development of the anti-hail national system. The main component of this system is Anti-hail Rocket RAG 96.00, product manufactured by Electromecanica Ploiesti, which falls under the category of explosives for civil use as specified in DIRECTIVE 2014/28/EU OF THE EUROPEAN PARLIAMENT AND OF THE COUNCIL of 26 February 2014, on the harmonisation of the laws of the Member States relating to the making available on the market and supervision of explosives for civil uses, taken into national law by G.D. 197/2016. In order to be placed on the market / made available on the market, Anti-hail Rocket RAG 96.00 must comply with the essential safety and functioning requirements, thus providing, maximum safety for those using it, while at the same time achieving the purpose for which it was manufactured, in predictable safety conditions. The paper presents the results of the specific laboratory tests, that have been used as a reference in the conformity assessment process of this product.
Controlling a robotic arm with Augmented reality
Authors: Olar Marius Leonard , Risteiu Marius , Panaite Arun Fabian , Rebrisoreanu Mihai , Musetoiu Oliviu
Published: January 2020

Under the circumstances of a patient’s upper limb disability, aided by a robotic arm with faulty controls, assistance is needed, using augmented reality as an auxiliary. Our system, with a headset, using an internet connection and an augmented reality device, placed on the assistant’s head, can ensure communication between the two, for both remote supervision and control. The assistant can enhance the control over the robotic arm, while having a head up display on the augmented reality glasses, based on what the patient sees. The communication is established through PC or mobile devices, connected to the internet. Having the patient’s view, and enhanced control over the robotic arm, the assistant can interact with nearby smart objects.
Critical velocity analysis for safety management in case of tunnel fire
Authors: Lanchava Omar , Ilias Nicolae
Published: January 2020

Heat, smoke and other toxic products may spread along the tunnel, in both directions from the seat of fire, causing different kinds of damage to people. Anyway, underground fire causes complicated results, which is preventing factor for life rescue and evacuation, creating difficulties for firemen and life rescue crew. Analysis of the critical speed, which is necessary for the effective management of combustion products, has been made for tunnel fires with high heat release rate. The characteristic changes in the critical Froude number in the work are presented in accordance with the critical speed. Particularly, it was noted that the formula determining the critical speed requires knowledge of the average smoke temperature, while the formula for calculating the last value includes the value of the required critical speed. In order to overcome this, Froude’s critical number Frc=4.5 has been introduced, which is not the way of solution, as it directly means constant critical velocity for the fire of any power and accordingly, does not correspond to experimental data.
Electrically actuated valves for gas compression installations located in potentially explosive atmospheres
Authors: Nechifor Cristian , Borzea Claudia , Vlăducă Iulian , Mălăel Ion , Niculescu Filip
Published: January 2020

Using electric energy in a potentially explosive atmosphere raises several problems that must be solved when designing, manufacturing and during the operation of electric equipment. Their approach requires special attention, considering the multiple technical, economical and labour safety aspects. The ingress protection for the electrical part of the valves is ensured by the capsulation assembly, comprising the protection measures applied for preventing the ignition of the surrounding atmosphere. The labyrinth seal through which the gas flow passes is designed so as to confine a potential ignition inside actuator’s flameproof enclosure. Numerical simulations were conducted for determining the combustion behaviour and the optimum width and geometry of the labyrinth canals.
Ensuring the safety and health of workers performing work at heights in the industrial sectors
Authors: Antonov Anca Elena , Buică Georgeta , Beiu Constantin
Published: January 2020

The research study aims to implement the general principles for the prevention of professional risks at employers’ level in relation to low-mobility workers in order to ensure an adequate level of safety and to ensure protection measures in support of social integration and inclusion. In order to prevent occupational accidents and occupational diseases at work, it is necessary to ensure the control of risks in order to improve the working conditions and to ensure the safety and health at work for the workers perform work at heights in the sectors of activity of the national economy with a high accident rate, by using compliant and safety work equipment. Managing professional risks of work equipment used for performing work at heights requires designers and manufacturers to ensure the conditions for the placing on the market of safety products with an adequate level of safety under the intended use conditions. To that end, the research study identifies the specific prevention tools needed to guarantee technical and environmental requirements, including appropriate measures and means of protection, in order to ensure an adequate level of security for low-mobility workers. The results of the research consisted in developing tools for effective risk management.
Examples of changes in Romania power systems towards the achievement of the modern objective of the UE
Authors: Stochitoiu Maria Daniela , Utu Ilie
Published: January 2020

One of the main scopes for power systems is the ensuring adequate and secure electricity service through intelligent planning, operation and reliability. In order to benefit today from the advantages of the intelligent production of tomorrow, the connection between the real production and the processes based on digital data is necessary. The devices using power electronic technology become a vital solution in many power system applications. Nowadays technologies are generating solutions various increasingly for the energetically management.
Influence of transport activity on environmental factors in Petroşani Basin
Authors: Mihăilescu Sorin , Praporgescu Gabriel
Published: January 2020

Economic development is closely linked to the mobility needs of communities. The main pillars supporting sustainable development are society, the environment and the economy, and the diagnosis of the current situation, the identification of solutions, the development plans and their implementation lead to sustainable development in terms of transport activity. As the Petroşani Basin has a high degree of urbanization, the negative effects of increased road traffic are particularly pronounced in the central areas of the cities. Of the environmental factors, air is the most obvious and most important factor in human health. Taking into account the national and European Community targets in terms of climate change mitigation, the reduction of air and noise pollution and greenhouse gas emissions is becoming a priority objective. Thus, by limiting the growth of road traffic and the adoption of strategic measures in the Petroşani Basin, a reduction in carbon dioxide emissions, nitrogen oxides and particulate matter levels will also be achieved. According to these trends, achieving a clean public transport system and sustainable (like electrical buses) and having infrastructure for the use of electric bicycles and trotters can do for sure reducing the pollutant emissions.
Multifunctional platform OPI-TPP for post-mining areas management - supportive tool for environmental impact assessment in the Silesia Voivodeship
Authors: Bondaruk Jan , Hamerla Adam , Jąderko-Skubis Karolina
Published: January 2020

Ongoing transformation of coal industry taking place in Silesian Voivodeship lead to increasing number of characteristic objects and post-industrial areas. Most of them are degraded and vacant even if they own resources of measurable natural or socio-economic value. Therefore effective scheme of their revitalisation is a high priority target for regional authorities and society.

Multidimensional approach to the analysis of post-mining areas requires ensuring proper scope and quality of data, integrating various areas of knowledge and information. An example of complex approach is an information platform based on analytical and expert modules the OPI-TPP system, which is a tool to support decision-making processes on the future use of post-industrial areas.

OPI-TPP based on Geographical Information System is an integrated tool dedicated for environmental impact assessment and provides measures that are necessary for regional and local stakeholders and reinforces decision making process.

This paper describes the methodology of post-mining area assessment in environmental impact aspect and exemplary applications with the use of the platform. The main functional relations of the system were presented, allowing to use the available range of data and analysis modules for the purpose of supporting environmental impact assessment for post-mining areas management in the Silesia Voivodeship.
OHS reporting in Romanian Companies – an Overview
Authors: Mihăilescu Sorin , Păun Ana-Petrina , Dura Codruţa
Published: January 2020

Nowadays, in Romania, companies with more than 500 employees are covered by Directive 95/2014, which urges large firms to show transparency and to publish periodically a non-financial report on their operations. According to GRI 403, this type of document will display a large volume of data on occupational health & safety (OHS) issues: OHS management system establishment, workers‘ participation and consultation on OHS issues, work-related risk assessment, trainings carried out on OHS topics, KPI indicators etc. In line with these tendencies, our paper analyzes a representative sample of Romania reporting companies which have already drawn up and communicated non-financial reports. The main purpose is to substantiate a composite OHS index in order to quantify the Romanian managers’ awareness towards the OHS issues.
Optimizing the computational simulations of air-flammable gas explosions using HPC and Ansys software
Authors: Munteanu Laurenţiu , Şuvar Marius Cornel , Tuhuţ Ligia Ioana
Published: January 2020

The purpose of this scientific work is to improve computer simulations of flammable air-gas explosions with HPC systems.

Computational Fluid Dynamics (CFD) is increasingly used for obtaining variable values of fluid flow areas, respectively for the manner in which fluids react with limited surfaces.

For a separate analysis of liquids and gases is used CFD, and for more realistic results is used the multi-phase method performed by ANSYS Fluent, which improves the calculation scalability and power.

For increasing the processing speed for complex analyses, with multiple geometries and fine meshes, ANSYS provides the user HPC (High Performance Computing) tools applicable for structural, thermal, electromagnetic, fluid dynamics and explicit dynamics solvers. HPC configuration is characterized by a good scalability, having the capacity for future extension of cores or processors.

For decreasing the computational simulation time for explosions, the proposed solution consists in running complex simulations on the servers of a HPC cluster. In this way is provided the possibility for a parallel or distributed running on one or several calculation systems. Using HPC along ANSYS applications may be activated by GPU acceleration, while other applications are limited to processing using CPUs. INSEMEX develops technical investigations of explosions and fires occurred in the industrial or civilian field, in compliance with Government Decision 1461/2006, based on the verification of scenarios using virtual computational simulations.
Optimizing the technical verification process of cylinders
Authors: Ilie Cosmin , Găman George Artur , Pupăzan Daniel , Nicolescu Cristian , Gireadă Andrei
Published: January 2020

The decisive factor in the process of technical verification of cylinders is conditioned by correct choice of the inspection method, in order to attentively catch possible imperfections caused by the wear and tear resulting from long term use. Emphasis is placed on safety conditions of cylinders, which include mandatory minimum technical requirements for periodic inspection of liquefied or compressed gas cylinders. Cylinders are an assembly consisting of: under pressure receptacles with a volume of 0,5 to 150 litres, serving for transport and storage of liquefied or compressed gas; the associated casing, which may be: a filling and drainage device, a security device, a pressure relief device, a measuring device, a valve coupling element, a fastening element fitted on the container, a setting and protection element and a protection to heat device. The current paper presents the optimal method of inspection and verification of cylinders for compressed, liquefied or dissolved under pressure gases, represented by the use of the hydraulic sample stand in accordance with international principles and practices.
Peculiarities of a mobile workout training facility for rescuer’s practical training
Authors: Nicolescu Cristian , Găman George Artur , Pupăzan Daniel , Ilie Cosmin , Kovacs Izabella
Published: January 2020

One of the most important factors in the success of an intervention/rescue operation in toxic/ flammable / explosive environments is appropriate training process for rescue personnel taking part in these interventions. Intervention can take place in small (confined) spaces, in high temperature / humidity areas, with low visibility conditions, which would make rescuer’s activity even more difficult, during interventions. Training is a process of psychophysiological preparation, which produces a high (maximum) return in professional activity of rescuers. The maximum yield is obtained by increasing the body’s functional capacity to highest degree. For this purpose, it is necessary to use systematic and methodical exercise according to pedagogical rules. The current paper presents a mobile workout training facility equipped with an area of enclosed spaces with different training routes, on various degrees of difficulty, allowing for simulation of some interventions in such spaces, having the possibility of creating high temperature and humidity, low visibility, etc. environments within the training facility, with the purpose of preparing intervention and rescue teams for situations close to real ones.
Performing comparative determinations on pollutant immissions through reference methods and by means of infrared spectroscopy
Authors: Toth Lorand , Călămar Angelica , Simion Alexandru , Irimia Alin
Published: January 2020

Atmospheric pollutants come from a series of anthropic activities and natural processes. When feeding large amounts of polluting species into the atmospheric layer, the issue of air pollution phenomenology is stated. Atmospheric pollution implies a risk generated by exposure to harmful substances (under different forms of aggregation) for all living organisms in the biosphere. This paper aims to identify the possibility of using an alternative method of determining air quality compared to currently used reference methods. There is the question of checking through statistical tools of the advantage of using a single determination to obtain the pollutant species and the gas concentrations Currently, carbon oxide concentration is determined by non-dispersive IR spectroscopy, nitrogen oxides are determined by chemiluminescence and sulphur dioxide is determined by UV fluorescence, these being the reference methods. For the achievement of highlighting results, the gas concentrations will be determined both by the reference methods and by an alternative method involving Fourier-transform infrared spectroscopy, imposing on the alternative method quality assurance criteria. By knowing the pollutant levels, can develop various air pollution control technologies and strategies in order to reduce air pollution, also design effective and economically efficient air pollution control strategies for human protection. Expected results involve data processing, obtained from field measurements of polluting species (CO, NOx SO2), through statistical instruments (repeatability / reproducibility limit, bias, accuracy and uncertainty of measurement) and establishing the framing of the results in the performance requirements imposed by the specialized literature in order to use modern methods for quantifying the level of air pollution.
Research on the use of modelling and computer simulation for metal mining structures in order to increase quality and safety
Authors: Vitan Cosmin , Nan Marin Sivliu , Dumitrescu Iosif , Nicola Aurelian , Vitan Dorel
Published: January 2020

3D representations using assisted design and computer simulations allow determining the geometric characteristics of critical sections needed for analytical calculation. Also, these representations form the basis of meshing necessary for the finite element calculation.

The purpose of this paper is to perform the metal structure verification, both by classical analytical calculation and by the finite element method, as well as to validate these calculations by computerized simulation.

The calculation performed on this metallic structure involves the analytical determination of stresses and, implicitly, of safety coefficients, which constitute a verification of metal structure.
Some considerations on circular economy, municipal solid waste and occupational risk
Authors: Rada Elena Cristina , Cestari Irene , Magaril Elena Romenovna
Published: January 2020

The aim of the present article is to preliminarily analyse the effects that the introduction of the principles of circular economy can have on the occupational risk in the sector of MSW management. The chosen reference scenario concerns an Italian town that reached a very high efficiency of selective collection and where a lot of data have been generated in the last years to characterize the content of MSW. Since 2015, the town has to modify a few criteria of MSW management in order to fully comply with the vision of EU. The methodology adopted in the present article is based on the following steps. Details on the destination and material recovery were collected for each stream of MSW presently source separated: specifically, food waste and green waste, paper and cardboard, plastics, metals, glass, composite materials, textiles, expired medicaments, exhausted batteries and other. This scenario was analysed concerning new possible initiatives on source separated streams and their treatment (e.g. diapers). Moreover, additional modifications to the present approach were analysed in order to maximize material recovery, optimize energy recovery and minimize landfilling. Consequences of this re-organization of the sector have to be discussed in terms of occupational risk and economic impact.
Sources of pollutants and environmental factors protection in the meat processing industry
Authors: Tiţa Ovidiu , Constantinescu Adelina Maria , Tiţa Mihaela Adriana
Published: January 2020

The production activity in the food industry involves the passage of stages of the technological process through which the raw materials are transformed into semi-finished products or finished products destined for food consumption. Their processing involves the occurrence of waste at certain operations of technological processes. These wastes can cause major environmental problems if they are not properly processed and neutralized. The study is about the smoking section of cold meats and meat specialities. The smoke required for the smoking process is produced by a generator. The resulting smoke is ventilated into the atmosphere. The sampling of air-flue gases was achieved at the level of the exhaust pipe. In the chemical composition of the smoke, about 300 known chemicals have been identified, and the most dangerous compounds identified were aromatic polycyclic hydrocarbons, especially 3,4-benzpyrene. This has resulted in an analysis of the technological conditions in which can be obtained the best results regarding the creation of safe and quality products in the conditions of using environmentally friendly working methods.
Technical requirements for entries in flameproof enclosures operating in potentially explosive atmospheres
Authors: Rad Marcel Daniel , Fotau Dragos , Zsido Sorin
Published: January 2020

The evaluation of explosion-proof electrical equipment for certification is particularly important given the risk of explosion and must be minimized. This in order to ensure the safety of life, health of workers, to prevent damage to goods and the environment when they meet the essential security requirements at European level. Directive 2014/34 / EU states that equipment used in explosive atmospheres must be designed to operate without endangering the environment for which it is intended. This paper proposes the study and evaluation of the requirements for flameproof enclosures. In order to verify explosion protection, the representative samples made available by explosion-protected equipment manufacturers are tested under the worst possible conditions that may occur in practice.
The Emergence of Industrial Tourism in Post-Mining Closure Areas – Project Management Models and Local Practices
Authors: Samuil Ionela , Caramidaru Ibrian , Ionica Andreea
Published: January 2020

Reducing industrial activities has led to the need for identifying and implementing strategies aimed at an economic usage of affected areas pointing to the past industrial age. There are many successful examples globally of using industrial heritage in industrial tourism. In Romania, the achievements are not so advanced, although over time there have been several initiatives to preserve culture, knowledge, tools, equipment, customs, and clothing related to the exploitation of mineral resources. The aim of this paper is to propose a project management model in addressing the needs of communities facing post-mining closure contexts and to examine how an integrated managerial outlook for various stakeholders involved in local tourism portfolios might reach solutions for the ongoing long-term social consequences of mine closures. The paper provides as a case study the transformation of the industrial patrimony of the former Petrila Mining Assembly, which serves as a lesson of industrial archeology, being one of the last ensembles in the area that still retains part of each stage of its evolution. The involvement and contributions of local non-profit organizations, municipalities and local businesses in the emerging of industrial tourism in Petrila are analysed through the proposed managerial model.
The impact of new assistive technologies on specific occupational risks for blind and visual impaired peoples
Authors: Darabont Doru Costin , Badea Daniel Onuţ , Trifu Alina , Fogarassy Paul
Published: January 2020

As employees, the blind and visual disabled peoples face specific occupational risks related to personal safety most of us are usually not aware. Many hazards, easy to avoid for sighted peoples, became extremely dangerous for peoples without visual perception. For example, an electric cable with discontinuous isolation is much easy to be avoided for sighted peoples, while for blind persons could be lethal, especially as they need to touch objects not only to manipulate them, but also to localize and recognize them. Beside orientation problems and obstacles avoidance, other less obvious threats exist. This paper presents the findings of an INCDPM study developed in collaborations with Baum Engineering that addresses the issues of using assistive materials and technologies for blind people at workplace. This assistive technologies, which are a most needed tool for the visually impaired people to access the labour market, could be also a danger if not properly installed and implemented. The most obvious risk for visual impaired persons using tactile floor, could be the slippery surfaces related accidents, if the products are not compliant. Another danger could be tactile materials for orientation; if their surface is damaged and sharp edges or corners are exposed. Such an accident could be of tremendous impact for a blind that need to rely continuously on his fingers for environment tactile exploration.
The subjects of the offenses to the norms on safety and health at work and the social and organizational effects specific to companies conducting mining activities
Authors: Popescu Ioan , Lohan Nicoleta-Monica , Baciu Constantin , Cazac Alin-Marian , Baciu Elena-Raluca
Published: January 2020

The offenses concerning safety and health at work have no material object, their constitutive content including: the object and subject of the offense, the objective and subjective side of the offense. The active subjects of an offense have a legal obligation to apply and control the implementation of occupational safety and health measures and the passive subjects will bear the consequences of the occurrence of specific events. The existence of some uncertainties in the current legislation, also affecting mining companies, creates legal disputes especially in relation to the issues concerning active subjects. As for the passive subjects, the legal loophole refers to the situation of the day-labourers who may be involved in accidents at work and occupational illnesses. The authors consider it is necessary to formulate new law articles for clarification and even to draw up a future law with concrete reference to day-labourers, but also to some new risk sensitive social groups. Thus, the egal work relationships: the manner of performing the work, its remuneration and subordination to the beneficiary carrying out mining activities, will also be specified.
Understanding and managing worker’s exposure to specific risks
Authors: Băbuţ Gabriel Bujor , Moraru Roland Iosif , Popescu-Stelea Mihai , Fraitag Daniel Nicu
Published: January 2020

The protection of workers exposed to specific risks is regulated by a substantial and well individualized legislation on safety and health at work. Currently there are many difficulties and shortcomings in implementing legal requirements on specific risks assessment and prevention, especially due to their insufficient knowledge and understanding by employers. In this context, starting from detailing and explaining legal requirements applicable, this paper aims to summarize and systematize the information regarding available, both at national and European level, tools and guides prepared for a unitary process of implementation of legal provisions on specific risks assessment and prevention. The paper was structured so as to constitute a legal and methodological guide to assist employers and other interested parties in the effort to implement an efficient and effective management of preventive activities directed to avoid or reduce workers’ exposure to specific risks.
Das Arbeitsgedächtnis – eine Bestandsaufnahme
Authors: Kiese-Himmel Christiane
Published: January 2020

Das Kurzzeitgedächtnis ist ein kapazitätslimitierter passiver Informationsspeicher. Seine Facette „Arbeitsgedächtnis“ hingegen ist nicht nur speicher-, sondern auch verarbeitungsorientiert, wodurch die aufgenommene Information ohne Zeitverzug für andere kognitive Prozesse zur Verfügung gestellt werden kann. Somit ist das Arbeitsgedächtnis ein dynamisches System zur Informationsverarbeitung, in dem alle bewussten Inhalte zusammentreffen. In den letzten 50 Jahren wurde das aus der Kognitiven Psychologie kommende Konstrukt „Arbeitsgedächtnis“ zunehmend mehr in klinische und pädagogische Kontexte übertragen. Insbesondere das hierarchische Mehrkomponentenmodell zum Arbeitsgedächtnis sensu Baddeley (1986, 2000) erhielt hohe Beachtung. Hier wird auf dessen ontogenetische Entwicklung, neuronalen Hintergrund, die Diagnostik im Kindesalter und klinische Relevanz des Konstrukts eingegangen.
Benötigen hirntote Organspender eine Narkose bei der Organentnahme?
Authors: Schiller Josefine
Published: January 2020

Im Rahmen ihrer Fachweiterbildung für Anästhesie und Intensivpflege hat sich die Autorin mit dem Thema Organtransplantation, insbesondere mit der zentralen Fragenach der Notwendigkeit oder Verzichtbarkeit einer Narkose des Spenders bei einer Multiorgantransplantation beschäftigt. Ihre Facharbeit erreichte beim Thieme intensiv-Pflegepreis 2018 den 3. Platz. Wir präsentieren ihre Arbeit in einer gekürzten Fassung.
Multilokuläres Borrelien-assoziiertes Pseudolymphom
Authors: Meier K. , Schaller M. , Yazdi A. S.
Published: January 2020

Kutane Pseudolymphome sind reaktive lymphoproliferative T- oder B-Zellinfiltrate, die sowohl klinisch als histologisch dem Bild eines kutanen Lymphoms entsprechen können. Wir stellen einen Patienten mit einem seit 2 Jahren bestehenden ausgeprägten multilokulären B-Zell-Pseudolymphom am Rücken vor. In der weiteren Diagnostik zeigten sich Antikörper gegenüber Borrelien vom IgG- und IgM-Typ sowie ein CD20-positives Infiltrat, nukleär eine bcl-6-Expression sowie ein Fehlen einer bcl-2-Expression. Es wurde ein IgM-positives Borrelien-assoziiertes multilokuläres Pseudolymphom diagnostiziert und eine Therapie mit Doxycyclin 200 mg/Tag über 3 Wochen eingeleitet.
Kinder allein zu Hause
Authors: Schäfer Klaus
Published: January 2020

Was geschieht mit den Kindern, wenn ein alleinerziehendes Elternteil plötzlich durch Krankheit oder Unfall auf die Intensivstation kommt? Wer übernimmt das Sorgerecht? Klinikseelsorger und Autor P. Klaus Schäfer hat sich mit dieser Frage beschäftigt.
Sklerodermiformes Basalzellkarzinom an der Wange unter der (Fehl-)Diagnose einer Aknenarbe
Authors: Lehmann P. , Gröne P.-H.
Published: January 2020

Eine Patientin stellte sich 4 Mal vor etwa 10 Jahren und vor 6 Jahren bei dem beklagten Hautarzt zum Hautkrebsscreening vor. In der ärztlichen Dokumentation wurde jeweils eine Narbe aufgrund einer Akne tarda befundet. Vor 2 Jahren stellte sich die Patientin bei einem anderen Hautfacharzt vor, der eine Biopsie entnahm, die ein sklerodermiformes Basalzellkarzinom ergab. Es musste eine komplexe operative Sanierung durchgeführt werden mit entsprechenden Komplikationen wie Nervenschädigungen, Gefühlsstörungen und Formveränderungen des Gesichtes. Die Gutachterkommission hat dies als Befunderhebungsfehler dem beklagten Arzt attestiert, zumal er nach dem 4., aber spätestens nach dem 5. Vorstellungsbesuch zum Hautkrebsscreening seine Diagnose mittels einer Probebiopsie hätte überprüfen müssen. Dies entspricht dem Facharztstandard, dem das Vorgehen des Facharztes in diesem Falle nicht gerecht wurde.
Stereoselective α-Tertiary Alkylation of N-(Arylacetyl)oxazolidinones
Authors: Shim Eunjae , Zakarian Armen
Published: January 2020

A method has been developed for the α-tertiary alkylation of zirconium enolates of N-(arylacetyl)oxazolidinones. This reaction directly installs an all-carbon quaternary center vicinal to a benzylic tertiary carbon in a highly diastereoselective manner.
Surgical Treatment of a Neuromucoepidermoid Carcinoma of the Left Main Bronchus via Posterolateral Thoracotomy in a 4-Year-Old Boy
Authors: Liebrich Markus , Friedel Godehard , Amrhein Peter , Tzanavaros Ioannis
Published: January 2020

We report the case of a 4-year-old boy with a neuromucoepidermoid carcinoma of the left main bronchus. Complete resection of the carcinoma and reconstruction of the carina between lower and upper lobe by means of an end-to-end anastomosis was performed via a left-sided thoracotomy.