Therapeutic approach for Amyand’s hernia; a case report

In very few cases stated in the literature, the vermiform appendix might be contained in a hernial sac. This distinctive pathology is described as Amyand\u27s hernia and has the very small occurrence of about 1%. We report the case of a 62-year-old man that presented for a reducible tumoral mass located in the right inguinal region. Amyand’s hernia was the intraoperative diagnostic. We performed hernioplasty (using the Lichtenstein tension-free mesh repair with a composite polypropylene mesh) without appendectomy. This case matches the type 1 Lossanoff and Basson’s classification and has no facile management. Due to the clinical specificities of each case that presents with defining features of an Amyand’s hernia, surgical management depends on the recommendations stated in the literature, as well as the surgeon’s judgment based on experience

Ecological implications of bulliform cells on halophytes, in salt and water stress natural conditions

[EN] Seven Romanian salt-tolerant species were histo-anatomical investigated. These species have been classified by the authors of the present study as ¿amphibious¿ halophytes, related to the field observations and anatomical considerations. All the analyzed taxa present bulliform cells at the foliar epidermis level. Despite the fact that there are different interpretations regarding the bulliform cells role and functional significance, we correlate these structures with the ecological factors, salinity and, respectively, drought conditions.This paper was published with support provided by the POSDRU project “Developing the innovation capacity and improving the impact of research through postdoctoral programmes”.Grigore, MN.; Toma, C.; Boscaiu, M. (2010). Ecological implications of bulliform cells on halophytes, in salt and water stress natural conditions. Analele Stiintifice ale Universitatii "Alexandru Ioan Cuza" din Iasi. Biologie Vegetala. 56(2):5-15. http://hdl.handle.net/10251/101713S51556

Photogrammetric modelling for urban medieval site mapping. A case study from Curtea de Argeş, Romania

Detailed mapping of urban historical sites superposed on natural landforms within built-up areas is a real challenge. Digital photogrammetric techniques meet the requirements for mapping archaeological sites within dense built-up areas. The objectives are to reveal the landform value in medieval site development and to analyse its impact on the landforms. The aim of the present study is to highlight the contribution of geomatics technologies for the evaluation and preservation of historical sites using UAV (Unmanned Aerial Vehicle) imagery and field photos for 3D modelling. Curtea de Argeş medieval site, established on Argeş River terraces and attested since the 13th century, represents the town core for which the specific methodology was applied

Foliar pigments and theyr dynamics during different vegetation phenophases in five cultivars of Cannabis sativa l.

The pigments dynamics of leaves were analyzed in five cultivars of Cannabis sativa L. during different growth phases. The photosynthetic and flavonoid pigments content were appreciated spectrophotometrically by light absorption of the acetone pigment extract (1%). During intense growth the middle floor leaves play an important role in light absorption and assimilates synthesis, although a certain cultivar from the five studied presents a different behavior. In the dioecious cultivars light absorption and photosynthesis intensity is higher than in the studied monoecious hemp cultivars. The leaves under the inflorescence have an important role in light absorption from the beginning of flowering until fruit formation

Dialogue Unites Us. Isolation Divides Us

This dialogue concerns the 105th anniversary of the Union of Bessarabia with Romania and a review of the activities, carried out together with Mr. Constantin Toma, the Mayor of Buzău Municipality and Mr. Marius-Adrian Nicoară, doctor in history, honorary councilor of the Buzău City Hall. Here are highlighted the relations of the municipality of Buzau with different localities from the Republic of Moldova, through the cultural, economic and interpersonal partnerships developed by the entities of the administrative-territorial units. Among these projects are the signing of the “Declaration of Union” on March 15, 2018; reconstruction of the Dniester River embankment, on the segment in front of the Citadel of Soroca; the inauguration of the busts of Ion Inculeț and Alexandru Marghiloman, on March 27, 2023, in Ialoveni; expansion of the “Petru Costin” Museum; The scientific conference “105 years since the Union of Bessarabia with Romania. Where power grows... The lesson of history and dignity of the year 1918” held in the Union Hall of the Academy of Music, Theater and Fine Arts in Chisinau; the commitment to rehabilitate the building by bearing all costs by the Buzău Local Council; a substantial book donation; the concert “The Romanian language is my homeland”; the “Chisinau for Buzau” project; the series of scientific conferences generically named “Zilele Alexandru Marghiloman” et al

Hybrid Steering Systems for Automotive Applications

The paper presents the results of the researches performed in order to find out the static and dynamic performances of some recent types of hybrid electrohydraulic servomechanisms. The new concept was generated by the needs of the modern aerospace technology called “flight by wire”, directed to the use of compact actuators composed mainly by a brushless motor driving a hydrostatic pump connected in a close loop with a hydraulic cylinder. The numerical simulations performed with Simcenter Amesim language pointed out the possibility of saving a lot of energy with this new concept, already used on civil airplanes and fighters. The new wave of autonomous driving generated a lot of combinations of electric and hydraulic components, according the peculiarities of applications. The authors studied the accuracy of the hybrid steering system of an articulated tractor based on a digital industrial servo valve combined with an ORBITROL standard unit. The structure of the last generation of the trucks hybrid steering systems was also studied, taking into account the real performances of each component. Finally, the effect of the strong penetration of the hybrid servo systems in the automotive manufacturing systems is assessed

On the electrostatic inertia in microgrids with inverter-based generation only—an analysis on dynamic stability

Storage4Grid project grant agreement No. 731155 RESERVE project grant agreement No. 727481 KIOS CoE grant agreement No. 739551.Microgrids are about to change the architecture and the operation principles of the future power systems towards smartness and resiliency. Power electronics technologies are key enablers for novel solutions. In this paper we analyze the benefits of a “microgrid by design” architecture (MDA), using a solid-state transformer (SST) as a low-voltage grid-former and inverter-based generation only. In this context, the microgrid stability is maintained with the help of “electrostatic energy inertia” that can be provided by the capacitor connected to the DC busbar behind the SST inverter topology. This happens in a natural way, alike the mechanical inertia in power systems with synchronous machines, however without depending on frequency and without the need of a rotational inertia. This type of microgrid always operates (both fully connected to the main grid or in islanding mode) with all the necessary mechanisms needed to maintain the microgrid stable—no matter of the perturbations in the upstream of the point of common coupling (PCC). In the case of microgrids with inverter-based generation only (including the energy storage systems), there is no mechanical inertia and different stability mechanisms need to be applied compared to the stability principle of the classical power systems. Our proposed mechanism differentiates from the recently proposed stability assessments of microgrids based on virtual synchronous generators from the control theory perspective. This paper is a continuation of our previous work where the MDA was first introduced. The use-cases and scenarios are based on realistic and yet reasonable complexities, by coupling the disturbance magnitude with the voltage stability limit in power grids. The paper finds meaningful disturbances to test the electrostatic energy inertia at the boundaries of grid stability, as guidance to understand the range of voltage variation for extreme conditions. The results show that in microgrids with inverter-based generation only and passive loads (RLC type) the operation is no longer frequency dependent. The energy of the DC busbar capacitor as electrostatic energy inertia of the MDA has a role similar to that of the rotational machines in classical grids in terms of maintaining dynamic stability, however impacting two different types of stability.publishe

Ecological anatomy in halophytes with C4 photosynthesis: discussing adaptatve features in endangered ecosystems

[EN] The Chenopodiaceae halophyte species provide perhaps the ideal model to study the ecological adaptations in relations with extreme environmental conditions. Closely linked with saline habitats, the chenopods with Kranz anatomy represents a striking and intriguing example of coevolution. In this study, we investigate the Kranz anatomy in a holistic manner in halophytes vegetating in two nature reserves, here regarded as rare and endangered ecosystems. This issue, apart from its scientific interest – as an adaptive, ecological and evolutive feature – also suggests the compulsory necessity to protect these areas, in order to preserve the floristic diversity in such menaced ecosystemsThis paper was published with support provided by the POSDRU/89/1.5/S/49944 project “Developing the innovation capacity and improving the impact of research through post-doctoral programmes”.Grigore, MN.; Toma, C.; Zamfirache, M.; Boscaiu, M.; Olteanu, Z.; Cojocaru, D. (2012). Ecological anatomy in halophytes with C4 photosynthesis: discussing adaptatve features in endangered ecosystems. Carpathian Journal of Earth and Environmental Sciences. 7(2):13-21. http://hdl.handle.net/10251/78758S13217