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Prof. Dr. Constantin Bungau
UNIVERSITY OF ORADEA

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0 Lean Management
0 Management
0 Sustainability
0 Industria 4.0

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Journal article
Published: 15 June 2021 in Membranes
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The membranes and membrane processes have succeeded in the transition from major technological and biomedical applications to domestic applications: water recycling in washing machines, recycling of used cooking oil, recovery of gasoline vapors in the pumping stations or enrichment of air with oxygen. In this paper, the neutralization of condensation water and the retention of aluminum from thermal power plants is studied using ethylene propylene diene monomer sulfonated (EPDM-S) membranes containing magnetic particles impregnated in a microporous propylene hollow fiber (I-PPM) matrix. The obtained membranes were characterized from the morphological and structural points of view, using scanning electron microscopy (SEM), high resolution SEM (HR-SEM), energy dispersive spectroscopy analysis (EDAX) and thermal gravimetric analyzer. The process performances (flow, selectivity) were studied using a variable magnetic field generated by electric coils. The results show the possibility of correcting the pH and removing aluminum ions from the condensation water of heating plants, during a winter period, without the intervention of any operator for the maintenance of the process. The pH was raised from an acidic one (2–4), to a slightly basic one (8–8.5), and the concentration of aluminum ions was lowered to the level allowed for discharge. Magnetic convection of the permeation module improves the pH correction process, but especially prevents the deposition of aluminum hydroxide on hollow fibers membranes.

ACS Style

Aurelia Nechifor; Alexandru Goran; Vlad-Alexandru Grosu; Constantin Bungău; Paul Albu; Alexandra Grosu; Ovidiu Oprea; Florentina Păncescu; Gheorghe Nechifor. Improving the Performance of Composite Hollow Fiber Membranes with Magnetic Field Generated Convection Application on pH Correction. Membranes 2021, 11, 445 .

AMA Style

Aurelia Nechifor, Alexandru Goran, Vlad-Alexandru Grosu, Constantin Bungău, Paul Albu, Alexandra Grosu, Ovidiu Oprea, Florentina Păncescu, Gheorghe Nechifor. Improving the Performance of Composite Hollow Fiber Membranes with Magnetic Field Generated Convection Application on pH Correction. Membranes. 2021; 11 (6):445.

Chicago/Turabian Style

Aurelia Nechifor; Alexandru Goran; Vlad-Alexandru Grosu; Constantin Bungău; Paul Albu; Alexandra Grosu; Ovidiu Oprea; Florentina Păncescu; Gheorghe Nechifor. 2021. "Improving the Performance of Composite Hollow Fiber Membranes with Magnetic Field Generated Convection Application on pH Correction." Membranes 11, no. 6: 445.

Review
Published: 29 April 2021 in Sustainability
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Currently, setting the obligation to use respiratory protective equipment with a level of protection of at least FFP2 in public transport and commercial and shopping centers are considered within the European Union. Many new products appeared on the European market within these specifications, and many symbols have been used. The paper deals with the meaning of selected respiratory protection based on respirators symbols and markings (which appeared massively, especially after the pandemic situation in the spring of 2020), these symbols not being uniformly understood and well communicated. We also mention and discuss some of the problems related to setting the conditions of public procurement, which affect respirators. Thus, this review is an “informative guide” in facilitating the understanding and use of full knowledge of the most appropriate respiratory protective devices in various situations.

ACS Style

Pavel Otrisal; Constantin Bungau; Vladimír Obsel; Zdeněk Melicharik; Gabriela Tont. Selected Respiratory Protective Devices: Respirators and Significance of Some Markings. Sustainability 2021, 13, 4988 .

AMA Style

Pavel Otrisal, Constantin Bungau, Vladimír Obsel, Zdeněk Melicharik, Gabriela Tont. Selected Respiratory Protective Devices: Respirators and Significance of Some Markings. Sustainability. 2021; 13 (9):4988.

Chicago/Turabian Style

Pavel Otrisal; Constantin Bungau; Vladimír Obsel; Zdeněk Melicharik; Gabriela Tont. 2021. "Selected Respiratory Protective Devices: Respirators and Significance of Some Markings." Sustainability 13, no. 9: 4988.

Journal article
Published: 01 April 2021 in Membranes
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The unpleasant odor that appears in the industrial and adjacent waste processing areas is a permanent concern for the protection of the environment and, especially, for the quality of life. Among the many variants for removing substance traces, which give an unpleasant smell to the air, membrane-based methods or techniques are viable options. Their advantages consist of installation simplicity and scaling possibility, selectivity; moreover, the flows of odorous substances are direct, automation is complete by accessible operating parameters (pH, temperature, ionic strength), and the operation costs are low. The paper presents the process of obtaining membranes from cellulosic derivatives containing silver nanoparticles, using accessible raw materials (namely motion picture films from abandoned archives). The technique used for membrane preparation was the immersion precipitation for phase inversion of cellulosic polymer solutions in methylene chloride: methanol, 2:1 volume. The membranes obtained were morphologically and structurally characterized by scanning electron microscopy (SEM) and high resolution SEM (HR SEM), energy dispersive X-ray analysis (EDAX), Fourier transform infrared spectrometry (FTIR), thermal analysis (TG, ATD). Then, the membrane performance process (extraction efficiency and species flux) was determined using hydrogen sulfide (H2S) and ethanethiol (C2H5SH) as target substances.

ACS Style

Aurelia Nechifor; Simona Cotorcea; Constantin Bungău; Paul Albu; Dumitru Pașcu; Ovidiu Oprea; Alexandra Grosu; Andreia Pîrțac; Gheorghe Nechifor. Removing of the Sulfur Compounds by Impregnated Polypropylene Fibers with Silver Nanoparticles-Cellulose Derivatives for Air Odor Correction. Membranes 2021, 11, 256 .

AMA Style

Aurelia Nechifor, Simona Cotorcea, Constantin Bungău, Paul Albu, Dumitru Pașcu, Ovidiu Oprea, Alexandra Grosu, Andreia Pîrțac, Gheorghe Nechifor. Removing of the Sulfur Compounds by Impregnated Polypropylene Fibers with Silver Nanoparticles-Cellulose Derivatives for Air Odor Correction. Membranes. 2021; 11 (4):256.

Chicago/Turabian Style

Aurelia Nechifor; Simona Cotorcea; Constantin Bungău; Paul Albu; Dumitru Pașcu; Ovidiu Oprea; Alexandra Grosu; Andreia Pîrțac; Gheorghe Nechifor. 2021. "Removing of the Sulfur Compounds by Impregnated Polypropylene Fibers with Silver Nanoparticles-Cellulose Derivatives for Air Odor Correction." Membranes 11, no. 4: 256.

Journal article
Published: 19 February 2020 in Science of The Total Environment
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Saving energy has an important role in the concerted actions to protect the planet from the effects of global warming, particularly the energy consumed by the existing buildings (with various energy consuming functions, inefficient energy), by implementing environmentally friendly solutions. The present paper emphasizes the need to include elements to stimulate the renovation of the existing buildings and of their energy efficiency in the national strategies, these constructions being important energy consumers. The research started with two case studies (2 hospital buildings) dating from 70–80s, with the aim to be energy efficient and modern constructions in Eastern Europe. In the presented best practice model, significant reductions in greenhouse gas emissions, primary energy consumption along with the use of renewable energy have been achieved by transforming some energy-inefficient buildings into intelligent buildings. Thus, the authors propose a new stake: “70-70-70” for similar buildings.

ACS Style

Marcela Prada; Ioana Francesca Prada; Monica Cristea; Daniela Elena Popescu; Constantin Bungău; Lotfi Aleya. New solutions to reduce greenhouse gas emissions through energy efficiency of buildings of special importance – Hospitals. Science of The Total Environment 2020, 718, 137446 .

AMA Style

Marcela Prada, Ioana Francesca Prada, Monica Cristea, Daniela Elena Popescu, Constantin Bungău, Lotfi Aleya. New solutions to reduce greenhouse gas emissions through energy efficiency of buildings of special importance – Hospitals. Science of The Total Environment. 2020; 718 ():137446.

Chicago/Turabian Style

Marcela Prada; Ioana Francesca Prada; Monica Cristea; Daniela Elena Popescu; Constantin Bungău; Lotfi Aleya. 2020. "New solutions to reduce greenhouse gas emissions through energy efficiency of buildings of special importance – Hospitals." Science of The Total Environment 718, no. : 137446.

Journal article
Published: 26 January 2020 in Sustainability
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The aim of our study is to evaluate the employees’ level of satisfaction/motivation in two Romanian public hospitals in the context of numerous changes of the legislation concerning the level of payment of the employees working in the healthcare system, and to reveal the characteristics of a proper, sustainable management in this type of public healthcare unit. During 2015–2018, 4945 questionnaires were distributed to the staff of both hospitals, processed, and analyzed. In the Clinical County Emergency Hospital of Oradea, the analysis of the questionnaires showed a decrease in motivation (from 94.63% in 2017 to 79.14% in 2018). In the Timisoara County Clinical Emergency Hospital, for all the categories tested, there was a slight increase of the motivation. All the professional categories showed a degree of satisfaction with ascending evolution. Motivations of a different kind than the financial one, reinforced by the hospital’s management in recent years, have led to a general degree of employee satisfaction, 96.95% of them being satisfied that they work in the hospital. In the current unstable legislative context, financial motivation cannot be influenced by the management of public hospitals; therefore, the most appropriate measures that are needed must be geared towards increasing non-financial motivation.

ACS Style

Codrin Dan Nicolae Ilea; Lucia Georgeta Daina; Simona Bungau; Delia Mirela Tit; Diana Uivarosan; Lavinia Moleriu; Ion Petre; Constantin Bungau; Izabella Petre. Sustainable Management, Instable Legislation Regarding Wages, and Employee Satisfaction/Motivation in Two Romanian Hospitals. Sustainability 2020, 12, 909 .

AMA Style

Codrin Dan Nicolae Ilea, Lucia Georgeta Daina, Simona Bungau, Delia Mirela Tit, Diana Uivarosan, Lavinia Moleriu, Ion Petre, Constantin Bungau, Izabella Petre. Sustainable Management, Instable Legislation Regarding Wages, and Employee Satisfaction/Motivation in Two Romanian Hospitals. Sustainability. 2020; 12 (3):909.

Chicago/Turabian Style

Codrin Dan Nicolae Ilea; Lucia Georgeta Daina; Simona Bungau; Delia Mirela Tit; Diana Uivarosan; Lavinia Moleriu; Ion Petre; Constantin Bungau; Izabella Petre. 2020. "Sustainable Management, Instable Legislation Regarding Wages, and Employee Satisfaction/Motivation in Two Romanian Hospitals." Sustainability 12, no. 3: 909.

Journal article
Published: 20 January 2020 in Science of The Total Environment
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The problems of determining the protective properties of barrier materials used for the production of body surface protection products of an isolative type are very actual. These garments are expected to have long-term resistance against permeation of toxic substances. The paper deals with the study of the effect of organic solvent vapours on the changes in protective properties of selected anti-gas protective garments commonly used by the North Atlantic Treaty Organization armed forces. Permeation measurements of selected gases with integral permeameter were performed to verify their barrier properties, surface changes after exposure to selected solvents by using a 3D optical profilometer, permeation measurements for vapours of these solvents with differential permeameter, and experimental simulating the possible influence of barrier properties of garments within permeation of air. It has been shown that in the case of gases, the permeability of the studied materials increases with decreasing kinetic diameter of the penetrant molecule used. In the case of acetonitrile and isooctane vapours, permeability increased with increasing vapour concentration due to interactions between polymeric materials and molecules of organic compounds. The permeation measurements of pure vapours and air/vapour mixtures indicate that the level of interactions between the molecules of the penetrant and the material of the protective garment is not strong enough to degrade the material of the garment in such a way as to allow a greater penetration of the pollutants through it. The results of permeation experiments for gases and organic vapours showed very good barrier properties of studied chemical isolated garments.

ACS Style

Pavel Otrisal; Karel Friess; Martin Urban; Simona Bungau; Delia Mirela Tit; Danut-Eugeniu Mosteanu; Zdenek Melicharik; Constantin Bungau; Lotfi Aleya. Barrier properties of anti-gas military garments, considering exposure to gas organic compounds. Science of The Total Environment 2020, 714, 136819 .

AMA Style

Pavel Otrisal, Karel Friess, Martin Urban, Simona Bungau, Delia Mirela Tit, Danut-Eugeniu Mosteanu, Zdenek Melicharik, Constantin Bungau, Lotfi Aleya. Barrier properties of anti-gas military garments, considering exposure to gas organic compounds. Science of The Total Environment. 2020; 714 ():136819.

Chicago/Turabian Style

Pavel Otrisal; Karel Friess; Martin Urban; Simona Bungau; Delia Mirela Tit; Danut-Eugeniu Mosteanu; Zdenek Melicharik; Constantin Bungau; Lotfi Aleya. 2020. "Barrier properties of anti-gas military garments, considering exposure to gas organic compounds." Science of The Total Environment 714, no. : 136819.

Journal article
Published: 01 December 2019 in Sustainability
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The problem of the environment in the inhabited area, in particular of the hygienic-sanitary comfort, are current topics of concern for the builders. The interest of the authors meets the requirements of the tenant. In general, it seems that the cause of the hygienic-sanitary discomfort of the inhabited environment would be the faulty execution of the construction or an inconsistent architectural conception; the current paper presents several factors that cause this discomfort, the tenant being just one of them. The result of faulty operation/utilization of living spaces is inadmissible for those who live there, both materially and with repercussions on their health. Additionally, this paper demonstrates the deficiency of the existing energy performance certificate. The results of our research offer real solutions in eliminating, solving, and correcting the hygienic-sanitary discomfort of the environment inside the buildings; this can be achieved by designing, executing and operating spaces correctly, adequately and optimally, ensuring a healthy environment. The authors propose to improve the norms of protection of the built environment, by modifying the related energy performance legislation/certificate; moreover, new and real practical solutions have been suggested by the authors for the prevention and remediation of hygienic-sanitary discomfort.

ACS Style

Constantin C. Bungău; Ioana Francesca Prada; Marcela Prada. Design and Operation of Constructions: A Healthy Living Environment-Parametric Studies and New Solutions. Sustainability 2019, 11, 6824 .

AMA Style

Constantin C. Bungău, Ioana Francesca Prada, Marcela Prada. Design and Operation of Constructions: A Healthy Living Environment-Parametric Studies and New Solutions. Sustainability. 2019; 11 (23):6824.

Chicago/Turabian Style

Constantin C. Bungău; Ioana Francesca Prada; Marcela Prada. 2019. "Design and Operation of Constructions: A Healthy Living Environment-Parametric Studies and New Solutions." Sustainability 11, no. 23: 6824.

Conference paper
Published: 18 September 2019 in IOP Conference Series: Materials Science and Engineering
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This paper addresses the phenomenon of topicality, the desire to recover the declining or abandoned urban areas. It focuses mainly on the central area of the cities, where industrial units of historical and cultural value have often been forgotten. The study refers to the context of Romania joining the European region, with perspective of the past period since it was under the influence of the Soviet Union, a period in which a rapid industrialization took place. The period of change of the 21st century favoured the decline of many large industries, producing nowadays buildings and enclosures awaiting for a change. The object of study consists of the industrial units and their premises situated in the central area of Oradea; considering a special situation in which the historical tissue intertwines with the residential and the fragmented former-industrial one. Urban regeneration is one of the most important strategies for cities with irregular development that want to survive the "urban sprawl" phenomenon. Sustainable development goals can be achieved by changing policies and the direction of development, while pursuing economic and social progress. In the case of industrial heritage, old abandoned structures can turn into strengths. These holes become opportunities for changing the rhythm and direction of the development, offering flexibility to a rigid tram. An analysis of the strategies applied to areas having characteristics as close as possible to the fragments of the proposed site has been carried out. Also examples of good practice having a favourable effect on society, economy and environment were considered. The aim of this paper is to emphasize the importance of preserving the industrial heritage and to present various methods by which it can be converted and used for the benefit of contemporary society, while preserving its character and identity.

ACS Style

Ioana Francesca Prada; Constantin Bungau; Ivett-Greta Zsak. Regeneration of the Industrial Heritage in the Central Area of Oradea, Romania. IOP Conference Series: Materials Science and Engineering 2019, 603, 042005 .

AMA Style

Ioana Francesca Prada, Constantin Bungau, Ivett-Greta Zsak. Regeneration of the Industrial Heritage in the Central Area of Oradea, Romania. IOP Conference Series: Materials Science and Engineering. 2019; 603 (4):042005.

Chicago/Turabian Style

Ioana Francesca Prada; Constantin Bungau; Ivett-Greta Zsak. 2019. "Regeneration of the Industrial Heritage in the Central Area of Oradea, Romania." IOP Conference Series: Materials Science and Engineering 603, no. 4: 042005.

Conference paper
Published: 17 September 2019 in IOP Conference Series: Materials Science and Engineering
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Growing competitiveness of manufacturing companies has led companies board to look for new innovative solutions to increase the productive efficiency. More and more companies are looking to maximize profit through different ways, some of them use classical methods that are focused on increasing production capacity, expanding the product portfolio, manufacturing and marketing campaigns, other operational activities, are implementing modern techniques to reduce losses. This paper propose to present the way that productivity is increased by reducing lead time through Lean Manufacturing method implementation. For this purpose a piece will be manufactured using a CNC processing center, which will contribute significantly to processing the part at a higher precision, and at the same time eliminating the down times. To highlight the contribution and the efficiency of the CNC processing center, will be present the classic production method using a classical milling machine, respectively FUS 22, the method that was also implemented, according to this case study. To analyze and graphically illustrate these two production methods, respectively classic and modern methods, VSM will be built, then the 2 methods will be compared.

ACS Style

I C Gherghea; Constantin Bungau; D C Negrau. Lead time reduction and increasing productivity by implementing lean manufacturing methods in cnc processing center. IOP Conference Series: Materials Science and Engineering 2019, 568, 012014 .

AMA Style

I C Gherghea, Constantin Bungau, D C Negrau. Lead time reduction and increasing productivity by implementing lean manufacturing methods in cnc processing center. IOP Conference Series: Materials Science and Engineering. 2019; 568 (1):012014.

Chicago/Turabian Style

I C Gherghea; Constantin Bungau; D C Negrau. 2019. "Lead time reduction and increasing productivity by implementing lean manufacturing methods in cnc processing center." IOP Conference Series: Materials Science and Engineering 568, no. 1: 012014.

Conference paper
Published: 17 September 2019 in IOP Conference Series: Materials Science and Engineering
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Supply chain performance, in terms of total cost, service level and delivery lead-time is an extremely important objective in an organization, being directly linked to inventory management. Therefore, well managed inventory is a main trigger to increasing profitability. In this regard, the present study attempts to explore the readiness of a leagile manufacturing company to embrace consignment stock model, in order to reduce inventory value for raw materials and packaging, as well as to avoid forecast accuracy problems and cash-flow issues. The methodology includes a brief analysis of different types of inventory models, focusing on consignment stock approach and proposes an exploratory case study, represented by a successful implementation of a consignment stock program in a multinational company, having already leagile prerequisites. Using as a basis the insights and learning from the real case, the aim of the study is to develop a business processes framework, accommodated with the IT support software, to serve as a guideline for future implementation of such programs.

ACS Style

M Faur; Constantin Bungau. Exploring the insights of a consignment stock program implementation in a leagile supply chain. IOP Conference Series: Materials Science and Engineering 2019, 568, 012055 .

AMA Style

M Faur, Constantin Bungau. Exploring the insights of a consignment stock program implementation in a leagile supply chain. IOP Conference Series: Materials Science and Engineering. 2019; 568 (1):012055.

Chicago/Turabian Style

M Faur; Constantin Bungau. 2019. "Exploring the insights of a consignment stock program implementation in a leagile supply chain." IOP Conference Series: Materials Science and Engineering 568, no. 1: 012055.

Conference paper
Published: 21 August 2019 in MATEC Web of Conferences
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Nowadays, manufacturing companies are involved in a big competition, each of them looking to increase productivity and profit by implementing best practices within the company. The present paper presents an analysis of best practices of manufacturing companies which contributes to increasing and improving the productivity, and also have been identified new trends regarding best practices implemented in manufacturing companies. In order to accomplish this research, has been analyzed a successful manufacturing company in the field of manufacturing and automation from Romania. To collect data for this study there were accessed two databases, different specialized websites in the field, but the most important source of information was obtained from the analyzed company. One of the best practices identified in this study was to improve the productivity through re-engineering, practice that the company studied has implemented. In order to highlight this good practice, namely reengineering, were analyzed in parallel both of existing manufacturing types from the analyzed company, respectively production on CNC processing centers and classical production. The exemplification of both types of productions was done by using a Lean Manufacturing method, namely Value Stream Mapping, identifying the operational flow of both types of production.

ACS Style

Ion Cosmin Gherghea; Constantin Bungau; Dan Claudiu Negrau. Best Practices to Increase Manufacturing Productivity - Comparative study. MATEC Web of Conferences 2019, 290, 07007 .

AMA Style

Ion Cosmin Gherghea, Constantin Bungau, Dan Claudiu Negrau. Best Practices to Increase Manufacturing Productivity - Comparative study. MATEC Web of Conferences. 2019; 290 ():07007.

Chicago/Turabian Style

Ion Cosmin Gherghea; Constantin Bungau; Dan Claudiu Negrau. 2019. "Best Practices to Increase Manufacturing Productivity - Comparative study." MATEC Web of Conferences 290, no. : 07007.

Conference paper
Published: 21 August 2019 in MATEC Web of Conferences
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In today’s competitive business environment, with a continuously increasing diversity in customer demand, a high level of supply chain responsiveness is an imperative requisite for companies’ survival. As a consequence, enhanced agility is requested for the supply chains. The purpose of this paper is to investigate the determinants that influence the position of the ‘decoupling points’ along the value chain, as according to the reviewed literature these represent the separation point between leanness and agility in a hybrid supply chain. It has been found that by applying different technical solutions along the chain, including breaking down the complete production process in modular sequences and outsourcing specific ones, considering reshaping the supply chain, the decoupling points’ location can be moved, allowing greater agility. The chosen methodology is a case study of a FMCG company, aiming to illustrate how increased agility is achieved by outsourcing labour-intensive and time consuming activities, while shortening the downstream to customer. The selected firm is since several years under Lean and Agile strategies implementation. The study shows that understanding both, material and information decoupling points, certain lean processes can be moved upstream, leveraging more agile processes close to the end customer. This way, supply chains can be redesigned towards increasing market responsiveness.

ACS Style

Monica Faur; Constantin Bungau. Outsourcing Towards Greater Agility Through Investigating Decoupling Points in Leagile Supply Chains. MATEC Web of Conferences 2019, 290, 07006 .

AMA Style

Monica Faur, Constantin Bungau. Outsourcing Towards Greater Agility Through Investigating Decoupling Points in Leagile Supply Chains. MATEC Web of Conferences. 2019; 290 ():07006.

Chicago/Turabian Style

Monica Faur; Constantin Bungau. 2019. "Outsourcing Towards Greater Agility Through Investigating Decoupling Points in Leagile Supply Chains." MATEC Web of Conferences 290, no. : 07006.

Journal article
Published: 02 August 2019 in Science of The Total Environment
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Barrier materials have wide applicability in both professional (military, medical, industrial) and non-professional (leisure and sports) fields. This paper focuses on the preparation of real conductive polymer (CP) sensors, for the study of the permeation of volatile toxic compounds through barrier materials. Use of such a CP sensor can help improve the quality of barrier materials used in protective clothing. Several types of platforms have been manufactured or purchased for use as comb sensors with different electrode dimensions, and a suitable method of applying the detection layer of conductive polymers (polyaniline and poly-pyrrole) has been developed. Prepared sensors were obtained using various technologies and were assessed not only for response to exposure to vapors of volatile toxic substances, but also for the possibility of their incorporation into a permeation cell, in order to expand the possibilities of using existing permeation devices. The resulting conductivity of the surface film ranges from 50 to 10,000 μS/cm. When exposed to ethanol vapors, the conductivity of the sensors dropped significantly and returned to the original value after exposure ended. The conductivity of the B12 CP sensor was in the range of 10–100 mS/cm and is considered the most valuable tested sensor. CPs deposited on this substrate have very high sensitivity in units of ppm (in special cases, even ppb) within the detection of analytes (in this case toxic vapors of ethanol, acetic acid) and the ability to return to initial (zero) conductivity.

ACS Style

Pavel Otrisal; Vladimir Obsel; Stanislav Florus; Constantin Bungau; Lotfi Aleya; Simona Bungau. Protecting emergency workers and armed forces from volatile toxic compounds: Applicability of reversible conductive polymer-based sensors in barrier materials. Science of The Total Environment 2019, 694, 133736 .

AMA Style

Pavel Otrisal, Vladimir Obsel, Stanislav Florus, Constantin Bungau, Lotfi Aleya, Simona Bungau. Protecting emergency workers and armed forces from volatile toxic compounds: Applicability of reversible conductive polymer-based sensors in barrier materials. Science of The Total Environment. 2019; 694 ():133736.

Chicago/Turabian Style

Pavel Otrisal; Vladimir Obsel; Stanislav Florus; Constantin Bungau; Lotfi Aleya; Simona Bungau. 2019. "Protecting emergency workers and armed forces from volatile toxic compounds: Applicability of reversible conductive polymer-based sensors in barrier materials." Science of The Total Environment 694, no. : 133736.

Journal article
Published: 15 June 2019 in Revista de Chimie
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In our research, both theoretical and practical approaches to the assessment of permeability of barrier materials used to produce protective garments of an isolative type designed for body surface protection have been studied. The main goal of this paper is to study the thermal resistance for a barrier material of the ventilated anti-gas isolative garment OPCH-05 which is used in the conditions of the Czech Armed Forces for the Chemical Corps specialists� protection against the effects of toxic compounds. The thermal analysis of samples was performed using the differential scanning calorimetry, the surface structural changes were determined via the 3D optical profilometer and the gas permeation measurements were performed by means of the integral permeation method. Based on permeation results, the appropriate time limits and the temperatures of the exposure, during which the chemical protective garment could be securely used, were evaluated.

ACS Style

Pavel Otřísal; Karel Friess; Lucia Feherova; Zdenek Melicharik; Lubomir Svorc; Constantin Bungau; Danut-Eugeniu Mosteanu. The Heat Stress Effects on the Gases Permeability of the Isolative Type Garment of the Czech Armed Forces Chemical Corps Specialists Body Surface Protection. Revista de Chimie 2019, 70, 1597 -1602.

AMA Style

Pavel Otřísal, Karel Friess, Lucia Feherova, Zdenek Melicharik, Lubomir Svorc, Constantin Bungau, Danut-Eugeniu Mosteanu. The Heat Stress Effects on the Gases Permeability of the Isolative Type Garment of the Czech Armed Forces Chemical Corps Specialists Body Surface Protection. Revista de Chimie. 2019; 70 (5):1597-1602.

Chicago/Turabian Style

Pavel Otřísal; Karel Friess; Lucia Feherova; Zdenek Melicharik; Lubomir Svorc; Constantin Bungau; Danut-Eugeniu Mosteanu. 2019. "The Heat Stress Effects on the Gases Permeability of the Isolative Type Garment of the Czech Armed Forces Chemical Corps Specialists Body Surface Protection." Revista de Chimie 70, no. 5: 1597-1602.

Journal article
Published: 16 April 2019 in Science of The Total Environment
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According to general principles of good practice, adopted at the international level, quality control is a key function in management and not just a simple means of verification. In a clinic or hospital pharmacy, the chief pharmacist has the training and authority to take the control measures necessary to develop and implement an Internal Managerial Control System (IMCS). The present article analyzes and describes the case of the County Hospital of Oradea, Romania, and presents how the IMCS was adopted and integrated. Quality assessment in the health services takes place via an accreditation process and quality certification, as well as through an internal audit of the hospital pharmacy. The authors report a retrospective and descriptive study carried out from 2012 to 2017, analyzing how current legislative standards are applied. The IMCS in the hospital pharmacy is a dynamic process of continuous transformation, permanently adapted to hospital requirements, achieved under the direction of the chief pharmacist and involving all pharmacy employees, as well as through good coordination practices applied by hospital management. In this specific case, the IMCS features 11 annually updated compliance standards, classed under the headings of work procedures, risk register, job descriptions and staff training. The pharmacy's good practice model for IMCS development, was adopted by all of the hospital's sectors, services and departments.

ACS Style

Lucia Georgeta Daina; Monica Sabau; Cristian Marius Daina; Corina Neamțu; Delia Mirela Tit; Camelia Liana Buhaș; Constantin Bungau; Lotfi Aleya; Simona Bungau. Improving performance of a pharmacy in a Romanian hospital through implementation of an internal management control system. Science of The Total Environment 2019, 675, 51 -61.

AMA Style

Lucia Georgeta Daina, Monica Sabau, Cristian Marius Daina, Corina Neamțu, Delia Mirela Tit, Camelia Liana Buhaș, Constantin Bungau, Lotfi Aleya, Simona Bungau. Improving performance of a pharmacy in a Romanian hospital through implementation of an internal management control system. Science of The Total Environment. 2019; 675 ():51-61.

Chicago/Turabian Style

Lucia Georgeta Daina; Monica Sabau; Cristian Marius Daina; Corina Neamțu; Delia Mirela Tit; Camelia Liana Buhaș; Constantin Bungau; Lotfi Aleya; Simona Bungau. 2019. "Improving performance of a pharmacy in a Romanian hospital through implementation of an internal management control system." Science of The Total Environment 675, no. : 51-61.

Journal article
Published: 30 March 2019 in Materiale Plastice
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This paper analyzes the indentation hardness and the indentation elastic modulus variation depending on the variation of the grind percentage of polymer, when the other factors that can influence the injection molding remain unchanged. The analyzed polymers were: acrylonitrile butadiene styrene ABS MAGNUM 3453, polyamide PA 6.6 TECHNYL AR218V30 Blak and polyoxymethylene POM EUROTAL C9 NAT. The samples that were studied had different compositions in new and grinding material. The G-Series Basic Hardness Modulus at a Depth method was used. The increase of the grind percentage of ABS (from 0 to 100 %) leads to insignificant changes in the indentation hardness, indentation modulus, and maximum force applied to samples of tested material. The maximum hardness (0.137 GPa) of PA 6.6 is recorded in the case of the sample with 80% grind content, and the maximum hardness of POM is recorded as well in the case of the sample with 80% grind content, as being 0.215 GPa. The variation of the grind content in the analyzed samples determines changes in the evaluated parameters, depending on the type of polymer. Combining the new material with grind in proportions experimentally established for each techno polymer leads to changes in their mechanical properties.

ACS Style

Gheorghe Radu Emil Maries; Constantin Bungau; Dan Chira; Traian Costea; Danut-Eugeniu Mosteanu. Study on the Influence of the Grind Percentage Over the Surface Hardness and Modulus of Elasticity of Parts Made of ABS, P6.6 and POM through Nanoindentation. Materiale Plastice 2019, 56, 65 -70.

AMA Style

Gheorghe Radu Emil Maries, Constantin Bungau, Dan Chira, Traian Costea, Danut-Eugeniu Mosteanu. Study on the Influence of the Grind Percentage Over the Surface Hardness and Modulus of Elasticity of Parts Made of ABS, P6.6 and POM through Nanoindentation. Materiale Plastice. 2019; 56 (1):65-70.

Chicago/Turabian Style

Gheorghe Radu Emil Maries; Constantin Bungau; Dan Chira; Traian Costea; Danut-Eugeniu Mosteanu. 2019. "Study on the Influence of the Grind Percentage Over the Surface Hardness and Modulus of Elasticity of Parts Made of ABS, P6.6 and POM through Nanoindentation." Materiale Plastice 56, no. 1: 65-70.

Conference paper
Published: 31 July 2018 in MATEC Web of Conferences
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The paper presents a comparative study of indicators which targeting the facilities and support for the innovation process. The study targets indicators regarding human resources, support structure / infrastructure and legislative provisions. The analysis is carried out over the last 5 years, comparing the indicators in Romania and the neighboring countries (Bulgaria, Hungary, Austria, Slovakia and Poland) and highly developed countries (Germany and France). Based on this study, will be drawing conclusions for improvement of these indicators. The indicators that will be taken into consideration are: Availability of scientists and engineers, Researchers, Quality of the education system, Researchers in Research and Development, Research and development expenditure, Firm-level technology absorption, University-industry collaboration in Research & Development, Quality of scientific research institutions, Gross domestic spending on Research and Development, Property rights, Intellectual property protection.

ACS Style

Bungau Constantin; Gherghea Ion Cosmin. Analysis of supporting indicators for innovation in Romania compared to neighboring EU countries. MATEC Web of Conferences 2018, 184, 04020 .

AMA Style

Bungau Constantin, Gherghea Ion Cosmin. Analysis of supporting indicators for innovation in Romania compared to neighboring EU countries. MATEC Web of Conferences. 2018; 184 ():04020.

Chicago/Turabian Style

Bungau Constantin; Gherghea Ion Cosmin. 2018. "Analysis of supporting indicators for innovation in Romania compared to neighboring EU countries." MATEC Web of Conferences 184, no. : 04020.

Conference paper
Published: 01 May 2018 in 2018 7th International Conference on Computers Communications and Control (ICCCC)
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The Smart campus is a new idea in the development of information technology, being a combination of the Cloud Computing, the Internet of Things and other emergent technologies. This paper presents the result of our research efforts to find the best solutions for the development of a smart campus, which also guarantees data security with a special focus on data confidentiality. Our solution proposes 5 levels of security for the cloud security architecture; it provides a high level of security, as well as high data confidentiality - the essential backbone for a truly smart campus development.

ACS Style

Daniela Elena Popescu; Marcela Florina Prada; Anca Dodescu; D. Jude Hemanth; Constantin Bungau. A secure confident cloud computing architecture solution for a smart campus. 2018 7th International Conference on Computers Communications and Control (ICCCC) 2018, 240 -245.

AMA Style

Daniela Elena Popescu, Marcela Florina Prada, Anca Dodescu, D. Jude Hemanth, Constantin Bungau. A secure confident cloud computing architecture solution for a smart campus. 2018 7th International Conference on Computers Communications and Control (ICCCC). 2018; ():240-245.

Chicago/Turabian Style

Daniela Elena Popescu; Marcela Florina Prada; Anca Dodescu; D. Jude Hemanth; Constantin Bungau. 2018. "A secure confident cloud computing architecture solution for a smart campus." 2018 7th International Conference on Computers Communications and Control (ICCCC) , no. : 240-245.

Conference paper
Published: 20 December 2017 in Balkan Region Conference on Engineering and Business Education
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The phenomenon of drop out studies appears in the current Romanian context as an acute problem of the national education system. In the present research we will try to identify how factors such as the average obtained in the baccalaureate exam, the place of provenance and the number of credits obtained at the end of the first year of study influence the abandonment. Using a bivariate analysis method, we followed the correlation between the variables "number of students expelled after the first year of study" in the case of students enrolled in the first year of study and having obtained a "grade less than or equal to 7 in the baccalaureate exam" and, respectively the correlation between the variable "number of students expelled after the first year of study" and the origin from urban or rural areas. As can be seen from the data collected, an obvious need to investigate the expectation of students at high risk of drop out - as regards the teacher-student relationship - can be presumed: what are the most effective ways of transmitting knowledge and what communication is acceptable by college students.

ACS Style

Constantin Bungău; Adrian Petru Pop; Adriana Borza. Dropout of first year undergraduate students: A case study of engineering students. Balkan Region Conference on Engineering and Business Education 2017, 2, 349 -356.

AMA Style

Constantin Bungău, Adrian Petru Pop, Adriana Borza. Dropout of first year undergraduate students: A case study of engineering students. Balkan Region Conference on Engineering and Business Education. 2017; 2 (1):349-356.

Chicago/Turabian Style

Constantin Bungău; Adrian Petru Pop; Adriana Borza. 2017. "Dropout of first year undergraduate students: A case study of engineering students." Balkan Region Conference on Engineering and Business Education 2, no. 1: 349-356.

Journal article
Published: 30 June 2017 in Materiale Plastice
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The first part of the paper presents the influence of the processing temperature by injection of HDPE, of PMMA, and PC+ABS blend on the indentation hardness and on the indentation modulus, when other factors that can influence the injection remain unchanged. The second part of the paper presents the influence of subsequent pressure by injection of HDPE, PMMA, and PC+ABS blend on the indentation hardness and on the indentation modulus, when the other factors remain unchanged. The HDPE samples were obtained at the following injection temperatures: 180, 190, 200, 210, and 220�C, and at the following subsequent pressures: 800 bar, 900 bar, 1000 bar, 1100 bar, and 1200 bar. The PMMA samples were obtained at the following injection temperatures: 220, 230, 240, 250, and 260�C, and at the following subsequent pressures: 450, 550, 650 , 750, and 850 bar. The PC+ABS samples were obtained at the following injection temperatures: 230, 240, 250, 260, and 270�C, and at the following subsequent pressures: 500 bar, 600 bar, 700, 800, and 900 bar. The G-Series Basic Hardness Modulus at a Depth method was used to obtain the indentation hardness and the indentation modulus. It was observed that by increasing the processing temperature and subsequent pressure, in the case of HDPE, leads to an increase in indentation hardness and in indentation modulus. It was observed that increasing the processing temperature by injection in the case of PMMA, from 220 to 250�C, leads to a slight increase in indentation hardness and in indentation modulus, whereas increasing the subsequent pressure of PMMA, from 450 bar to 850 bar, leads to a slight decrease in indentation hardness and in the indentation modulus. Increasing the processing temperature by injection in the case of PC+ABS, from 230 to 250�C, leads to a slight increase in indentation hardness and in indentation modulus. By further increasing the processing temperature by injection, from 250 to 270�C, leads to a decrease in indentation hardness and in the indentation modulus. Alternatively, increasing the subsequent pressure from 500 bar to 900 bar leads to not only a decrease in indentation hardness but also to a decrease in the indentation modulus.

ACS Style

Gheorghe Radu Emil Maries; Dan Chira; Constantin Bungau; Traian Costea; Liviu Moldovan. Determining the Influence of the Processing Temperature by Injection and of the Subsequent Pressure on the Surface�s Hardness and Indentation Modulus of the Products Made of HDPE, PMMA, PC+ABS through Nanoindentation - G-Series Basic Hardness Modulus at a Depth Method. Materiale Plastice 2017, 54, 214 -220.

AMA Style

Gheorghe Radu Emil Maries, Dan Chira, Constantin Bungau, Traian Costea, Liviu Moldovan. Determining the Influence of the Processing Temperature by Injection and of the Subsequent Pressure on the Surface�s Hardness and Indentation Modulus of the Products Made of HDPE, PMMA, PC+ABS through Nanoindentation - G-Series Basic Hardness Modulus at a Depth Method. Materiale Plastice. 2017; 54 (2):214-220.

Chicago/Turabian Style

Gheorghe Radu Emil Maries; Dan Chira; Constantin Bungau; Traian Costea; Liviu Moldovan. 2017. "Determining the Influence of the Processing Temperature by Injection and of the Subsequent Pressure on the Surface�s Hardness and Indentation Modulus of the Products Made of HDPE, PMMA, PC+ABS through Nanoindentation - G-Series Basic Hardness Modulus at a Depth Method." Materiale Plastice 54, no. 2: 214-220.