196,323 research outputs found
Probleme noi în aşezarea paleolitică Măluşteni IV (judeţul Vaslui)
No full textBrudiu Mihai, Istrate M. Probleme noi în aşezarea paleolitică Măluşteni IV (judeţul Vaslui). In: Materiale şi cercetări arheologice, N°13 1979. A XIII - A sesiune anuală de rapoarte. pp. 21-23
An Extremely Low-mass He White Dwarf Orbiting the Millisecond Pulsar J1342+2822B in the Globular Cluster M3
No full textWe report on the discovery of the companion star to the millisecond pulsar J1342+2822B in the globular cluster M3. We exploited a combination of near-ultraviolet and optical observations acquired with the Hubble Space Telescope in order to search for the optical counterparts to the known millisecond pulsars in this cluster. At a position in excellent agreement with that of the radio pulsar J1342+2822B (M3B), we have identified a blue and faint object (m F275W ≈ 22.45) that, in the color-magnitude diagram of the cluster, is located in the region of He core white dwarfs (WDs). From the comparison of the observed magnitudes with theoretical cooling tracks we have estimated the physical properties of the companion star: It has a mass of only 0.19 ± 0.02 M o, a surface temperature of (12 ± 1) × 103 K, and a cooling age of Gyr. Its progenitor was likely a ∼0.84 M o star, and the bulk of the mass-transfer activity occurred during the subgiant branch phase. The companion mass, combined with the pulsar mass function, implies that this system is observed almost edge-on and that the neutron star (NS) has a mass of 1.1 ± 0.3 M o, in agreement with the typical values measured for recycled NSs in these compact binary systems. We have also identified a candidate counterpart to the wide and eccentric binary millisecond pulsar J1342+2822D. It is another WD with a He core and a mass of 0.22 ± 0.2 M o, implying that the system is observed at a high inclination angle and hosts a typical NS with a mass of 1.3 ± 0.3 M o. At the moment, the large uncertainty on the radio position of this millisecond pulsar prevents us from robustly concluding that the detected star is its optical counterpart
Data set for the publication " Evaluation of the Accuracy and Frequency Response of Medium-Voltage Instrument Transformers under the Combined Influence Factors of Temperature and Vibration"
No full textThis is dataset for paper published:
Agazar, M.; Istrate, D.; Pradayrol, P. Evaluation of the Accuracy and Frequency Response of Medium-Voltage Instrument Transformers under the Combined Influence Factors of Temperature and Vibration. Energies 2023, 16, 5012. https://doi.org/10.3390/en16135012"This project 19NRM05 IT4PQ has received funding from the EMPIR programme co-financed by the Participating States and from the European Union's Horizon 2020 research and innovation programme". Funder name: European Metrology Programme for Innovation and Research (EMPIR) Funder ID: 10.13039/10001413
On being "dark" and promiscuous: The Dark Triad traits, mate value, disgust, and sociosexuality
No full textThere is considerable evidence suggesting the Dark Triad traits (i.e., psychopathy, narcissism, & Machiavellianism) are associated with greater promiscuity, but the mechanisms liking them are poorly understood. In this study (N = 379) we replicated prior associations between the Dark Triad traits and sociosexuality and considered the potential mechanisms of mate value and (limited) sexual disgust in meditation and moderated-mediation models. The Dark Triad traits were correlated with short-term mating, but only narcissism was associated with more mate value and only psychopathy was associated with limited sexual disgust. Mate value moderated the relationship between psychopathy, sexual disgust, and short-term mating. Sexual disgust acted as a mediator between psychopathy and short-term mating. As such, people high in psychopathy who have high mate value are more promiscuous because they are less disgusted
Management of waste electric and electronic equipments in two EU countires: a comparison
No full textThe paper presents some data regarding waste electrical and electronic (WEEE) management in one of the founding countries of the EU, Italy, and in a recent entry into the EU, Romania. The aim of this research was to analyze some problems that countries entering the EU will have to solve with respect to WEEE management. The experiences of Italy and Romania could provide an interesting reference point. The strengths and weaknesses that the two EU countries have encountered can be
used in order to give a more rational plan for other countries. In Italy the increase of WEEE collection was achieved in parallel with the increase of the efficiency of selective Municipal Solid Waste
collection. In Romania, pilot experiences were useful to increase the awareness of the population. The different interests of the two populations towards recyclable waste led to a different scenario: in
Romania all types of WEEE have been collected since the entrance into the EU; in Italy the "interest" in recycling is typically related to large household appliances, with a secondary role of lighting equipment
Poultry manure gasification and its energy yield
No full textThe disposal of poultry manure is one of the main problems of the poultry sector. The results of some tests developed in a gasification pilot plant are presented in this paper. The aim was to preliminarily analyze the energy generation from poultry manure treated by gasification. The level of energy yields and the quantification of the produced syngas are also reported. The good results suggests an possible application at full scale
Maintenance strategies and local impact of MSW incinerators
No full textThe present paper gives a contribution to the understanding of the effects of variations in maintenance scheduling on the environmental impact of municipal solid waste incinerators. The proposed approach allows a vision of their impact
beyond the conventional balances. The characteristics of a selected case study were put forward and discussed. A plant proposed for a region in the North East of Italy was chosen for the scheduling effects analysis because of the long period
of non-operation of each waste treatment line: 3 months per year as requested from the local environmental protection agency. The following effects were discussed on a yearly basis: maintenance stop fractionation, maintenance stop
lasting, maintenance stop seasonal scheduling; the last aspect was discussed also at device level. The extreme scenario of seasonal stop gave the opportunity of
assessing the highest reduction of yearly average impact from the stack, varying the season of maintenance: a reduction up to 23% could be obtained for the pollutants concentration contribution at ground level in the area of highest impact, comparing the worst case with the best case by a diffusive model. In the case of more common periods of stops for maintenance the reduction would be lower. The role of district heating must be taken into account too
WEB MINING IN E-COMMERCE
No full textRecently, the web is becoming an important part of people’s life. The web is a very good place to run successful businesses. Selling products or services online plays an important role in the success of businesses that have a physical presence, like a reE-Commerce, Data mining, Web mining
Perspectives of refuse-derived fuel in Romania after entrance into the EU
No full textOn 1 January 2007, Romania entered the European Union. For that reason Romania must comply with all the EU directives in the field of the management of the environment. In 2007, in Romania, Municipal Solid Waste (MSW) was generally landfilled without pre-treatment and energy valorization absent. Some initiatives are in progress but landfilling is still dominant. The entrance in the EU gave an important push to the industrial sectors, increasing the demand of fuels. In this frame an important option regards the use of Solid Recovered Fuel (SRF) as industrial fuel substitute. In Romania, SRF could be generated from MSW using the bio-drying process with post-separation of inert fractions as the percentage of organic fraction in the residual MSW is significant. Today in Romania bio-drying plants for residual municipal waste (RMSW) are under discussion but not yet implemented. The present paper deals with the potential use of SRF in Romania. Some aspects of local and global environmental impact related to a partial substitution of conventional fuels with SRF for industrial uses are discussed too. Some considerations are also based on the assessment of the Romanian SRF characteristics that could be potentially generated. The scenarios that are discussed concern the use of SRF obtainable taking into account also the development of the Romanian MSW composition and the effects of the selective collection evolution
Removal of Benzene from oil refinery wastewater treatment plant exchausted gases with a multi-stage biofiltration pilot plant
No full textBenzene removal from exhausted gases is a tricky issue and is usually carried out by the means of chemical processes. Such systems require reactants, produce waste and are energy demanding. Biological systems can be a cost-effective solution. The paper presents the results obtained in a multi-stage biological system for benzene and other aromatics removal from exhausted gases of a wastewater treatment plant working with oil refinery pavement wastewaters. The system, based on a bioscrubber, two biotrickling filters and one biofilter, obtained removal efficiencies always over the 70%, also giving good results with fluctuating inlet concentrations
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