46 research outputs found
Romania trying to be an European brand
Building a coherent country branding program at international level requires a strong coordination between the government, the business sector, the decision makers from educational and cultural sector, the civil society and, the mass media representatives in any country. The paper presents the main efforts Romania has done to build a country image with a significant impact at international level. It focuses on the main policies and programs applied by Romania in the specific field of the national branding, offering a good analysis on the institutional framework and experience in promoting the countryâs image internationally. The paper presents also the results of a research conducted with different local authorities (based on personal interviews) involved in the construction and promotion of a national brand abroad. The findings of the study provide opinions on the implications of the role of Romaniaâs country image in the European Integration process. A SWOT analysis on the Romaniaâs policy for building a European country brand completes the conclusions and the perspective on this particular issue considered to be important for a European Union integrating country. Finally, the paper makes proposals for creating a positive country image for Romania, a country that is in the process of redefining its position and its image at international level. Romaniaâs image will be considered from the perspective of the four dimensions defining a country image (tourism, exports, foreign direct investments and foreign policy), as well as from the perspective of building an integrated image abroad.Country branding, country image, policy making, European integration.
Ecotoxicological Behavior of some Cationic and Amphoteric Surfactants (Biodegradation, Toxicity and Risk Assessment)
Magneticallyâactuated microcages for cells entrapment, fabricated by laser direct writing via two photon polymerization
The manipulation of biological materials at cellular level constitutes a sine qua non and provocative research area regarding the development of micro/nanoâmedicine. In this study, we report on 3D superparamagnetic microcageâlike structures that, in conjunction with an externally applied static magnetic field, were highly efficient in entrapping cells. The microcageâlike structures were fabricated using Laser Direct Writing via TwoâPhoton Polymerization (LDW via TPP) of IPâL780 biocompatible photopolymer/iron oxide superparamagnetic nanoparticles (MNPs) composite. The unique properties of LDW via TPP technique enabled the reproduction of the complex architecture of the 3D structures, with a very high accuracy i.e., about 90 nm lateral resolution. 3D hyperspectral microscopy was employed to investigate the structural and compositional characteristics of the microcageâlike structures. Scanning Electron Microscopy coupled with Energy Dispersive XâRay Spectroscopy was used to prove the unique features regarding the morphology and the functionality of the 3D structures seeded with MGâ63 osteoblastâlike cells. Comparative studies were made on microcageâlike structures made of IPâL780 photopolymer alone (i.e., without superparamagnetic properties). We found that the cellâseeded structures made by IPâL780/MNPs composite actuated by static magnetic fields of 1.3 T were 13.66 ± 5.11 folds (p < 0.01) more efficient in terms of cells entrapment than the structures made by IPâL780 photopolymer alone (i.e., that could not be actuated magnetically). The unique 3D architecture of the microcageâlike superparamagnetic structures and their actuation by external static magnetic fields acted in synergy for entrapping osteoblastâlike cells, showing a significant potential for bone tissue engineering applications
Functional Implications of Oral Papillomatosis
The papillomatous lesion has a number of implications that destabilize the normal functioning of the stomatognathic system, but also it has psychological implications. A patient with a papilloma located in an area of maximum visibility tends to be less exposed in public, to reduce socialization, to feel embarrassed. Oral papilloma affects the masticatory function, phonation, but also aesthetics.Understanding how local immunity works in patients diagnosed with oral papilloma is essential. Local immunity influences the evolution of the papillomatous oral lesion. Toll-like receptors are extremely important in the immune process of oral papilloma. Toll-like receptors can be used as indicators of lesion progression. A reduced expression of these receptors in the focus of the lesion is suggestive of pathological progress. It is also emphasized that in the oral cavity we find a well-represented local immune system which cells have an immune role and whose expression influences the evolution of the disease. The most incriminating factor in the occurrence of oral papilloma is HPV infection. The persistent inflammatory process produced by the HPV virus stimulates the development of oral, pharyngeal, laryngeal neoplasms. The HPV virus acts as a direct inducer in the process of transforming the benign lesion into a malignant lesion. Macrophages play an important role in the malignancy potential induced by the HPV virus. Macrophages are activated by increasing the metabolic rate and fighting tumor cells.</p
The global burden of cancer attributable to risk factors, 2010-19 : a systematic analysis for the Global Burden of Disease Study 2019
Background Understanding the magnitude of cancer burden attributable to potentially modifiable risk factors is crucial for development of effective prevention and mitigation strategies. We analysed results from the Global Burden of Diseases, Injuries, and Risk Factors Study (GBD) 2019 to inform cancer control planning efforts globally. Methods The GBD 2019 comparative risk assessment framework was used to estimate cancer burden attributable to behavioural, environmental and occupational, and metabolic risk factors. A total of 82 risk-outcome pairs were included on the basis of the World Cancer Research Fund criteria. Estimated cancer deaths and disability-adjusted life-years (DALYs) in 2019 and change in these measures between 2010 and 2019 are presented. Findings Globally, in 2019, the risk factors included in this analysis accounted for 4.45 million (95% uncertainty interval 4.01-4.94) deaths and 105 million (95.0-116) DALYs for both sexes combined, representing 44.4% (41.3-48.4) of all cancer deaths and 42.0% (39.1-45.6) of all DALYs. There were 2.88 million (2.60-3.18) risk-attributable cancer deaths in males (50.6% [47.8-54.1] of all male cancer deaths) and 1.58 million (1.36-1.84) risk-attributable cancer deaths in females (36.3% [32.5-41.3] of all female cancer deaths). The leading risk factors at the most detailed level globally for risk-attributable cancer deaths and DALYs in 2019 for both sexes combined were smoking, followed by alcohol use and high BMI. Risk-attributable cancer burden varied by world region and Socio-demographic Index (SDI), with smoking, unsafe sex, and alcohol use being the three leading risk factors for risk-attributable cancer DALYs in low SDI locations in 2019, whereas DALYs in high SDI locations mirrored the top three global risk factor rankings. From 2010 to 2019, global risk-attributable cancer deaths increased by 20.4% (12.6-28.4) and DALYs by 16.8% (8.8-25.0), with the greatest percentage increase in metabolic risks (34.7% [27.9-42.8] and 33.3% [25.8-42.0]). Interpretation The leading risk factors contributing to global cancer burden in 2019 were behavioural, whereas metabolic risk factors saw the largest increases between 2010 and 2019. Reducing exposure to these modifiable risk factors would decrease cancer mortality and DALY rates worldwide, and policies should be tailored appropriately to local cancer risk factor burden. Copyright (C) 2022 The Author(s). Published by Elsevier Ltd. This is an Open Access article under the CC BY 4.0 license.Peer reviewe
3D Biomimetic Magnetic Structures for Static Magnetic Field Stimulation of Osteogenesis
We designed, fabricated and optimized 3D biomimetic magnetic structures that stimulate the osteogenesis in static magnetic fields. The structures were fabricated by direct laser writing via two-photon polymerization of IP-L780 photopolymer and were based on ellipsoidal, hexagonal units organized in a multilayered architecture. The magnetic activity of the structures was assured by coating with a thin layer of collagen-chitosan-hydroxyapatite-magnetic nanoparticles composite. In vitro experiments using MG-63 osteoblast-like cells for 3D structures with gradients of pore size helped us to find an optimum pore size between 20â40 ”m. Starting from optimized 3D structures, we evaluated both qualitatively and quantitatively the effects of static magnetic fields of up to 250 mT on cell proliferation and differentiation, by ALP (alkaline phosphatase) production, Alizarin Red and osteocalcin secretion measurements. We demonstrated that the synergic effect of 3D structure optimization and static magnetic stimulation enhances the bone regeneration by a factor greater than 2 as compared with the same structure in the absence of a magnetic field
A Review on Stimuli-Actuated 3D Micro/Nanostructures for Tissue Engineering and the Potential of Laser-Direct Writing via Two-Photon Polymerization for Structure Fabrication
In this review, we present the most recent and relevant research that has been done regarding the fabrication of 3D micro/nanostructures for tissue engineering applications. First, we make an overview of 3D micro/nanostructures that act as backbone constructs where the seeded cells can attach, proliferate and differentiate towards the formation of new tissue. Then, we describe the fabrication of 3D micro/nanostructures that are able to control the cellular processes leading to faster tissue regeneration, by actuation using topographical, mechanical, chemical, electric or magnetic stimuli. An in-depth analysis of the actuation of the 3D micro/nanostructures using each of the above-mentioned stimuli for controlling the behavior of the seeded cells is provided. For each type of stimulus, a particular recent application is presented and discussed, such as controlling the cell proliferation and avoiding the formation of a necrotic core (topographic stimulation), controlling the cell adhesion (nanostructuring), supporting the cell differentiation via nuclei deformation (mechanical stimulation), improving the osteogenesis (chemical and magnetic stimulation), controlled drug-delivery systems (electric stimulation) and fastening tissue formation (magnetic stimulation). The existing techniques used for the fabrication of such stimuli-actuated 3D micro/nanostructures, are briefly summarized. Special attention is dedicated to structures’ fabrication using laser-assisted technologies. The performances of stimuli-actuated 3D micro/nanostructures fabricated by laser-direct writing via two-photon polymerization are particularly emphasized
Experimental And Theoretical Insight Into Formulations Based On Poly(Vinyl Alcohol Boric Acid) And Diclofenac Sodium Salt
A series of three formulations were prepared in view of experimental and theoretical investigation of their drug release potential. The morphology of the film formulations, in terms of distribution of drug into the polymeric matrix and the nature of the drug was investigated by scanning electron microscopy and polarized light microscopy techniques. The in vitro drug release has been studied in a medium mimicking the physiological medium. It was established that the drug release is in close correlation with the mass ratio. Assuming that the dynamics of polymer-drug system's structural units take place on continuous and nondifferentiable curves (multifractal curves), we show that in a one-dimensional hydrodynamic formalism of multifractal variables the drug release mechanism (Fickian diffusion, non-Fickian diffusion, etc) are given through synchronous dynamics at a differentiable and non-differentiable scale resolutions. Finally, the model is confirmed by the empirical data