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Introduction. Rhinoseptoplasty is considered the most challenging operation because many techniques have to be taken into consideration to achieve an optimal aesthetic and functional results. Rhinoseptoplasty techniques have been perfected over time, following two main surgical approaches: structural rhinoplasty (resection/ reconstruction) and conservative (preservation rhinoplasty). Methods. The authors present the risks and complications in a comparative study of 100 cases with patients in primary rhinoseptoplastyplasty performed between 2019-2021: 50 cases in Structural Rhinoplsty and 50 cases in Preservation Rhinoplasty. The study presents two surgical concepts of rhinoplasty regarding the main advantages, disadvantages and indications of each type of rhinoseptoplasty surgery. Results and conclusions. Complications post-rhinoseptoplasty can be considered as perioperative, functional, anatomic (aesthetic) and psyhological. In this study 10 cases (10%) of primary rhinoplasty required revision surgery. The most frequent postoperative deformity is the "pollybeak" when a deep naso-frontal angle, cartilaginous hump and reduced tip projection are present preoperatively. The pollybeak was the indication in 4 cases (40%) of all revision rhinoplasties. Other frequent postoperative deformities are: wide nasal tip, retractions of the columella base and irregularities of the nasal dorsum. These deformities are very often combined and caused by a loss of septal support. Septorhinoplasy is a difficult procedure and the surgeon must have accurate anatomical knowledge and rich clinical experience. The risks for rhinoplasty-complications can be reduced with increasing experience. It is very important to make distinction between complication and mistake. [ABSTRACT FROM AUTHOR]

The nasal pyramid is an essential structure in the physiognomy of the individual, and the external appearance of the nose is very important in the modern society in which we find ourselves. That is why the anatomical diversity of the nasal pyramids has led to the development of various surgical technique for reshaping the nasal structures. Rhinoseptoplsty has changed considerably in recent decades, from a standardized reduction procedure to a procedure focused on very differentiated problems, reductions, relocations and augmentations of frequently combined tissues Most surgeons around the world have agreed on a new concept of surgery, that of preserving different structures of the nose given the fact that the principle of preservation is better than that of resection, with a more natural result. Material and method. Review of the two surgical concept of rhinoplasty regarding the main advantages and disadvantages of each type of rhinoseptoplasty surgery. Results and conclusions. Proper patient selection is important for good results. Before surgery, nasal analysis should perfomed clinically and photographically to determine the necessary corrections. Rhinoplasty is still one of the most challenging procedures in facial plastic surgery. With the right surgical experience and proper surgical techniques the results are most often good and the patients are satisfied. [ABSTRACT FROM AUTHOR]

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The morphological and structural properties of the poly(vinyl chloride)/graphene oxide (PVC/GO) composites are reported. By the mixture of the two constituents, the PVC/GO composite membranes with a concentration of the GO sheets varying from 0 wt.% to 0.5, 1, 2, 3, 4 and 5 wt.% were prepared. Using scanning electron microscopy (SEM) and the analysis of the atomic force microscopy (AFM) images we observed that as increasing the GO concentration in the PVC mass from 0 wt.% to 5 wt.%, the average surface roughness decreases from 235 µm to 227 µm. Using Raman scattering, we report that as increasing the GO concentration in the PVC mass, the ratio between the relative intensities of the Raman glines situated in the spectral ranges 600- 650 and 2850-3000 cm-1 (I600-650/I2850-3000) increases as a consequence of the change of GO carbon atoms hybridization from sp² to sp³. An increase in the number of C-C bonds, simultaneous with the appearance of O-C=O bonds and the decrease of the chlorine concentration, when the GO concentration increases in the PVC weight is reported by X-ray photoelectron spectroscopy (XPS). The down-shift of the main diffraction signal from 24° to 26° when the GO concentration increases in the PVC/GO composite mass from 0 wt.% to 5 wt.%, confirms the incorporation of GO in the polymeric matrix and the modification of the original PVC sample structure. Using transmission electron microscopy (TEM), no agglomerations of the GO structures within the PVC/GO matrix contrast limit were observed. [ABSTRACT FROM AUTHOR]

The problems and the possible schemes of organization between industries and the relations of this organization with European Union member states for optimization of the export of military equipment developed in cooperation generate wide discussions. As a consequence, this article highlights some of these debates and export advantages to ensure the economic viability of the cooperation programs. [ABSTRACT FROM AUTHOR]

The efficient use of the defence budget for the achievement of military capabilities is a process that generates wide discussions, because it involves a systematic approach of the different economic, military and political aspects. The article highlights some of the methods of analysing the efficiency of the military expenses offered by the specialised literature, which result in identifying the relevant elements, with an impact on the development of military capabilities - as an investment process, which involves short-term costs, but also long-term advantages, from industrial development to ensuring national security. Thus, the efficient use of the defence budget offers a valuable dividend to the national economy. Last but not least, the developed military capabilities can, directly or indirectly, influence the nature of the conflicts, as well as the way in which insecurity is perceived. [ABSTRACT FROM AUTHOR]