RESEARCH ON THE PHENOLOGY OF THE VARIETIES CULTIVATED IN ECOLOGICAL AND CONVENTIONAL SYSTEM IN THE GROWING SEASONS 2018 IN THE MURFATLAR VITICULTURAL AREA

The study carried out in the vintage 2018 in the Murfatlar winegrowing area included 6 varieties and two culture systems: conventional and ecological. The evolution of the phenological stages in the 6 varieties showed that the duration of the growing season, from the budburst to the fall of the leaves was between 196 and 205 days, depending on the variety. The conventional or ecological culture system had no influence on the duration of the phenological stages

STUDIES ON THE MAIN CHEMICAL COMPOUNDS AND QUALITY INDICES OF RED WINES FROM THE MAIN VINEYARDS IN OLTENIA

Recently, worldwide, there has been a decrease in wine consumption, as the consumer has become much more attentive to the quality of this food, refusing products that do not meet certain standards. At the same time, the new world wine regions specialize in quality production, coming on the market with a varied offer and at a convenient price. The fame of the particularly pleasant characteristics of Romanian wines is given not only by the extremely high value of several local varieties, which have given fame to some wine centers: Fetească alba by Alba Iulia, Grasa by Cotnari, Tămâioasă by Drăgăşani, or by Pietroasele, Busuioacă by Bohotin, Fetească neagră de Nicoreşti, Negru de Dragasani, etc., but also the fact that the most famous foreign varieties, which made famous certain regions and countries (Traminer, Sauvignon, Cabernet Sauvignon, Merlot, Pinot), cultivated in Romania wines that have often equaled or surpassed, by their "generosity" and finesse, those of the countries of origin. For wine and especially red wine, it is important to establish its typicality and authenticity due to its impact on the large mass of knowledgeable consumers who value quality and safety.

THE INFLUENCE OF AGEING ON LEES ON THE QUALITY OF WHITE WINES FROM THE MURFATLAR VINEYARD

Ageing of wines on lees allows the release of different compounds such as mannoproteins and polysaccharides into wines during yeast autolysis. Yeasts can release polysaccharides, mainly mannoproteins, from the cell wall, not only during autolysis but also during alcoholic fermentation of the must. The polysaccharides released and more particularly the mannoproteins are wall constituents of yeast. We followed the effect of ageing on lees in 3 white wines from the Mulrfatlar vineyard, vintage 2020. We adopted 3 different maturation periods on yeasts: 10, 20 and 30 days. The results show that this technique offers great prospects for improving the quality of white wines

THE INFLUENCE OF MACERATION DURATION ON THE QUALITY OF RED WINES FROM THE MURFATLAR VINEYARD

Maceration is the main technological stage in red vinification. The duration of maceration is the main technological factor that influences the intensity of extraction of phenolic compounds and aromas from grapes. In this study we applied different maceration times to the vinification of three red varieties from the Murfatlar vineyard and we found significant differences between wines in terms of composition and sensory properties

THE EVOLUTION OF GRAPES RIPENING DURING GROWING SEASON 2021 IN DRĂGĂȘANI VINEYARD

Harvesting grapes at optimum maturity is an essential condition for obtaining wines of the desired quality. The ripening of the grapes is a dynamic process, that is why the physico-chemical parameters followed for the evaluation of the quantity and quality of the harvest are constantly changing both in terms of their values and the relationships between them. Harvesting grapes at maturity corresponding to the type of wine to be obtained requires rigorous monitoring of the dynamics of maturation. In the Drăgășani vineyard, the local varieties, older or newer, enjoy a special appreciation. In order to be able to highlight its full qualitative potential, harvesting grapes at optimal maturity is the first condition, especially in the wine-growing years characterized by special climatic conditions, such as 2021

THE FAVORABILITY OF THE VITICOL YEAR 2018 FOR THE CULTURE OF WINE IN THE ECOLOGICAL SYSTEM IN THE MURFATLAR VITICULTURAL AREA

The culture of the vine in an ecological system requires particularly favorable climatic conditions that allow the growth, development and maturation of the grapes under optimal conditions. To do this, the climatic conditions must limit as much as possible the development of diseases and pests. Therefore, the temperature regime and the water regime are prime factors for the favorability of a wine-growing area. Research has shown that the year 2018 was particularly warm but also with a surplus of rainfall, especially during the growing season, which also led to a decrease in the duration of the sun's brightness. Therefore, the year 2018 was more favorable to the ecological system for the white varieties and less favorable for the red varieties

ASPECTS REGARDING THE ENERGETICALLY EFFICIENCY OF IRRIGATION OF SOME CROPS IN NORTH-EAST ROMANIA

On the basis of some registered information in three areas from Moldova, it was calculated the energy balance and the energetically efficiency of the applied irrigation on eight species of plants. The information's obtained proved that the irrigation process is efficient from the energetically point of view for all the field crops which have been seen in south droughty zone and this process is less efficient in central and moderate warm and moist zone. In the cool moist zone from northern, the irrigation process is efficient only in a few cultures. On the slope lands, where the cultures need more water, the energetically efficiency of the irrigation process is greater than on a plat field. The greatest values of the balance and energetically efficiency were obtained in sugar beet, followed by alfalfa, maize for grain or silage, potato, wheat and sunflower, on the last places coming soybean and bean. There reacted favourable to irrigation the sugar beet, followed by maize for grain or silage, sunflower, potato and wheat, in bean and soybean being registered an energy balance very reduced

A mediastinal germ cell tumor of Yolk sac type -case report

Rezumat Tumorã cu celule germinale tip Yolk sac -prezentare de caz Obiectiv: Raportãm un caz extrem de rar de tumorã cu celule germinale localizatã la nivelul mediastinului anterior. Este cazul unui bãrbat de 36 de ani care s-a prezentat cu trombozã de venã subclavie stângã şi a fost admis pentru tratament de specialitate. Tomografia computerizatã toracicã a relevat o masã tumoralã mare în mediastinul anterior. Intervenåia chirurgicalã a evidenåiat o tumorã infiltrativã mediastinalã cu implicarea venei subclavii stângi, care a fost biopsiatã pentru examinare morfologicã. Histologic, masa tumoralã s-a dovedit a fi un carcinom, cu mod de creştere papilar şi tubular. Examenul imunohistochimic a relevat imunoreactivitate pozitivã pentru alfa-fetoproteina în celulele tumorale si negativã pentru antigenul carcinoembrionar şi fosfataza alcalinã placentarã. Nivelul seric al alfa-fetoproteinei la acest pacient a fost, de asemenea, ridicat. Acest lucru a susåinut diagnosticul de tumorã Yolk sac, care este o tumorã primarã rarã în mediastin. Post-chirurgical, pacientul a primit o combinaåie chimioterapicã constând din cisplatinã, vespezid şi bleomicinã, fiecare timp de 3 sãptãmâni, în total 4 cicluri. În timpul tratamentului, nivelul alfa-fetoproteinei, a fost în scãdere. Concluzie: Tumora Yolk sac primarã mediastinalã este o tumorã rarã. Diagnosticul ar trebui sã fie fãcut nu numai pe studii morfologice, dar, de asemenea, luând în considerare vârsta pacientului şi nivelul seric crescut al alfa-fetoproteinei. În ciuda chimioterapiei moderne, prognosticul tumorii Yolk sac mediastinale rãmâne sumbru. Cel mai important indicator prognostic este excizia completã a masei tumorale înainte de chimioterapie. Cuvinte cheie: tumora cu celule germinale, tumora Yolk sac, tumora sinusului endodermic Abstract Objective: We report an extremely rare case of germ-cell tumor localized at the level of the anterior mediastinum. Clinical presentation: A 36-year-old man who presented with left subclavial vein thrombosis was admitted to our hospital for specific cure. Computed tomographic scan of the chest showed a large anterior mediastinal mass. Surgical intervention revealed an infiltrative mediastinal tumor involving the left subclavial vein, which was biopsied for morphological examination. Histologically, the tumoral mass proved to be a carcinoma, with papillary and tubular growth patterns. Immunohistochemical stains for alpha-fetoprotein were positive in the tumor cells while stains for carcinoembryonic antigen and placental like alkaline phosphatase were negative. The serum level of alpha-fetoprotein of this patient was elevated, as well. This supported the diagnosis of Yolk sac tumor, a rare primary tumor within the mediastinum. Postsurgery, the patient received a combination chemotherapy consisting of cisplatin, vespezid and bleomycin every 3 weeks for a total of 4 cycles. During the treatment, the alpha-fetoprotein level, was decreasing. Conclusion: Primary mediastinal Yolk sac neoplasm is a rare tumor. The diagnosis should be A mediastinal germ cell tumor of Yolk sac type -case repor

Evaluarea microbiană a solului din judeţul Ialomiţa, România

This paper presents the population of micro-organisms found in sixsoil samples from Balaciu, Ialomiţa county, Romania, with a certain electrical conductivityand pH.The soil samples were dried, ground, revitalized with peptone water, and thenincubated at 31 °C. The culture media used were: nutrient agar: yeast extract, peptone, agar; YPG agar: yeast extract, peptone, glucose, agar supplemented with chloramphenicol. The soil samples were inoculated in Petri dishesand incubated for 7 days at 35 °C for bacteria and 28 ºC for fungi. After incubation, the number of microorganismswas calculated by the CFUdetermination technique (colony forming units).Also, the electrical conductivity with values less than 4 dS/m andthe pH, whose values exceeded 8, were determined