Considerations on hospital financing in the context of health care decentralization

2010 represented the moment when the reform was applied in the health field by decentralizing the management ofthe health units with beds (hospitals). This analysis points out the way hospital financing was carried out after that and the main problems the health care system of Romania has to deal with. In the end there are presented a few personal considerations on the main challenges for the futur

Studiul cinetic al îndepărtării ionilor de Pb(II) şi Hg(II) din medii apoase pe biomasă de rapiţă

In this study, the removal of Pb(II) and Hg(II) ions from aqueous solution using rapeseeds biomass was examined in batch systemsas a funtion of contact time. The results obtained for the removal of each studied metal ion were analyzed using three kinetics models: prseudo-first order, pseudo-second order and intra-particle diffusion, in order to elucidate the mechanism of the removal process. For both studied metal ions, the experimental data are well described by the pseudo-second order kinetics model. Theseresults can be used for to highlight the potential applicability of rapeseeds biomass as low-cost biosorbent in the clean-up of aqueous effleunts, containing toxic heavy metals

Pedogeochemistry of hortic anthrosol from Copou greenhouse – Iaşi (I)

The soil from Copou greenhouse – Iasi is a mixic-proxicalcaric-hipohortic entianthrosol (profile IS.1), associated with proxicalcaric–hortic-anthrosol (profile IS.2). Characteristic for this anthrosol is the formation at depth of 12–48 cm of Ahok horizons, proto-frangipanes or frangipanes, which determined the differential evolution of pedogeochemical processes in soil profiles (geochemical segregation phenomena). The studied soils fall within the class of medium and fine textured, the dominant particles size fractions (with very close weight) being sand and clay. The migration and accumulation tendency of fine particles size fractions at Ahok(x)2 horizon level represent one of the conditions for frangipane horizons formation and developing of geochemical segregation phenomena. For upper horizons of profiles are characteristics neutral conditions – weak alkaline and moderately oxidizing, and for bottom horizons are characteristic neutral conditions – weak acid and moderately reducing. Following the total soluble salts content (variation limits: 152.92–688.02, average: 382.87 mg / 100 g soil), the upper horizons are highly salinized (Apk1) and moderately salinized (Apk2, Ahok(x)1 and Ahok(x)2), and the bottom horizons are weak salinized. The total phosphorus content varied between 94.57–768.05 μg P2O5/g soil, with an average of span by 53.95 % from total phosphorus. The inorganic phosphorus represents 46.03 % from total phosphorus, and the organic phosphorus is 53.95 % from total phosphorus. The phosphorus extractable in acetate – lactate, non-occluded phosphorus, varied between 90.09–740.09 μg P2O5/g soil, with an average of span by 366.50 μg P2O5/g soil (which represents 94.73 % from total phosphorus)

Rayleigh waves in isotropic elastic materials with micro-voids

In this paper, we show that a general method introduced by Fu and Mielke allows to give a complete answer on the existence and uniqueness of a subsonic solution describing the propagation of surface waves in an isotropic half space modelled with the linear theory of isotropic elastic materials with micro-voids. Our result is valid for the entire class of materials admitting real wave propagation which include auxetic materials (negative Poisson's ration) and composite materials with negative-stiffness inclusions (negative Young's modulus). Moreover, the used method allows to formulate a simple and complete numerical strategy for the computation of the solution.Comment: arXiv admin note: text overlap with arXiv:2104.1314

Comparison of the evolution of the COVID-19 disease between Romania and Italy

After the outbreak of COVID-19 in Italy, thousands of Romanian citizens who worked in Northern Italy, Spain or Germany returned to Romania. Based on the time-dependent susceptible–infected–recovered—SIR model, this paper compares the evolution of the COVID-19 disease between Romania and Italy, assuming that the parameter value of R0 in the time-dependent SIR model decreases to R1 < R0 after publicly announced restrictions by the government, and increases to a value of R2 < R1 when the restrictions are lifted. Among other things, we answer the questions about the date and extent of the second peak in Italy and Romania with respect to different values of R2 and the duration of the restrictions

Recent advances in biosorption of heavy metals: support tools for biosorption equilibrium, kinetics and mechanism

Heavy metals are increasingly present in industrial wastes and effluents, which can generate serious concerns for environmental quality and human health. Consequently, there is a continuous expansion of researches for new approaches and developments to guarantee environmental cleaning-up. Although there are some physico-chemical established methods for the removal of heavy metals from various environmental compartments, biosorption gains further confidence as a reliable alternative compared to classical technologies, which are expensive and sometimes unreliable. This paper aims to analyze the biosorption as a biotechnological strategy for the decontamination of aqueous effluents containing heavy metal ions, in terms of its potential for metal immobilization and uptake. The paper also focuses on the most important parameters affecting the removal of heavy metals by various categories of biosorbents both living and non-living forms of biomass and provides new alternatives for modeling and optimization of process equilibrium and kinetics. A special attention was paid to biosorption mechanism, as a factual challenge for process optimization and scale-up. The potential benefits and problems associated to metal removal by biosorption are highlighted.Roumanian National Authority for Scientific Research, CNCS – UEFISCDI, project number PN-II-ID-PCE-2011-3-0559”, Contract 265/2011

Fragipanization phenomenon – effects on soils pedogeochemistry from protected areas (greenhouses and solariums)

In this paper are presented several new aspects related to the effects of fragipanization phenomenon on pedogeochemical processes in particular case of soils from protected areas (greenhouses and solariums). A special attention was paid to dynamic evolution of macro- and micro-elements in conditions of soils from protected areas, affected by fragipanization phenomenon, and to the correlation between these and pedogeochemical segregation and salinization processes. In addition, were highlighted a number of issues relating to the conditions of emergence and dynamics of the frangipane in soils from protected areas. The fragipane represents both a degradation phenomenon and an initiator for soil degradation phenomena. The formation of fragipane horizons is directly correlated with the apparition and development of pedogeochemical segregation, compaction and salinization processes that have strong negative influence on pedological and agrochemical characteristics of soils. The impacts fragipane is highlights, in general, by: (i) the discontinuity of water circulation in the soil profile, (ii) contrasting physico-chemical conditions between the upper and lower horizons, (iii) particular and atypical evolutions of the organic matter dynamics, speciation processes and inter-phase distribution of macro- and micro-elements etc., (iv) simultaneously with the formation horizons fragipane (emphasis segregation pedogeochimice) are rapidly degraded the physical-chemical and agrochemical characteristics of soils, with negative effects on their productivity and quality of obtained agricultural products

Consideraţii asupra calităţii lucrărilor de afânare adâncă a solului utilizând analiza statistică

The field surveys were conducted within the North-East development region on oderately inclined terrain. The primary data were obtained from the vertical sections of the ground made perpendicular to the forward direction of the soil tiller. The width of the cross-sections was 2 m and the depth of 1.2 m. The primary data obtained from the measurements of the vertical sections made were subsequently processed mathematically. In order to further verify the significance of the differences occurring within a plot, the use of mathematical methods for analyzing the area, volume and shape of the tiled surface has been attempted, which will allow the researcher a larger number of checks under optimal conditionsusing the mathematical statistical apparatus. Key words:deep soil loosening works, soil, statistical analysi

The evaluation of factors affecting sorption of pentachlorophenol in soil

The release of persistent organic pollutants (POPs) derived from different industrial processes represents an important source of environmental contamination. Pentachlorophenol (PCP) is a highly chlorinated organic compound that has been extensively used as a broad spectrum biocide, particularly in the wood preservation industry. Due to its stable aromatic ring structure and high chlorine content, PCP is persistent in the environment, and it has become one of the most widespread contaminants in soil, sediments and water. In soil, the fate of POPs is governed by their interactions with reactive soil colloids. The soil properties as well as the chemical properties of the pollutants, control its bioavailability and transport, thus, affecting further remediation processes. The main objective of the present work was to study the sorption of pentachlorophenol in soil, collected from Iasi area (Romania). The experiments were performed in batch mode. Interest was directed towards the effects of contact time (0-72 h), initial pollutant concentration (5 - 20 mg L-1), pH and temperature (10 - 50oC). The sorbed amounts of PCP increased with increase in contact time and initial concentration and reached the equilibrium after 24 h. Pentachlorophenol sorption increase with temperature in the range of 10-25oC, suggesting an endothermic process, and decrease when the temperature increased from 25 to 50°C. The results indicated that lower temperature (i.e. 10 to 25°C) was favorable for the sorption process. The high temperature (50°C) might affect the physicochemical properties of soil therefore; the sorption PCP on soil was significantly reduced

Optimizarea parametrilor de biosorbţie pentru reţinerea ionilor de Cu(II) pe biomasă de alge marine roşii şi verzi

Marine algae are an important biomass resource because of the many properties they have in solving various environmental problems such as the ability to decontaminate wastewater, soil decontamination, soil fertilization, etc. Heavy metal pollution is a problem for the environment. The development of industrial activities has led to increased emissions of heavy metals into the environment, with negative consequences for soils, plants, rivers and waters. Therefore, it is necessary to find appropriate methods that should be environmentally friendly in removing metal ions in a more efficient and inexpensive way. In this paper we optimized the biosorption parameters (pH, initial concentration and contact time) for the retention of Cu (II) ions on algae biomass, using two types of marine algae: a red one Callithamnion corymbosum sp. and a green one -Ulva lactuca sp. from aqueous solution