Chlorophyll a (Chl a) dynamics in the near-shore waters of the NW Black Sea was investigated between 2002 and 2010 in the Mamaia Bay (north of Constanta, Romania) in relation to some physical-chemical parameters. Chl a ranged from values below detection limit (0.17 µg ) to 76.13 µg . l -1 , and showed large temporal variability (CV = 142.3%), strongly related to the Danube's discharges, meteorological conditions, and anthropogenic pressures.Seasonally, Chl a showed a winter/early spring maximum, sometimes followed by a stronger one in April/early May, closely linked to the Danube's higher discharges in spring. After significantly lower concentrations in late spring/early summer, Chl a exhibited its strongest maximum in summer (July-August), followed by another one in autumn (late September-October).Interannual variation of Chl a seems to be controlled by the hydrometeorological conditions in summer. Thus, the highest annual Chl a means were observed in 2006 (8.56 ± 8.35 µg . l -1 ) and 2010 (9.20 ± 11.72 µg . l -1 ), when, also, the summer Chl a concentrations were maximal due to the large riverine discharges. The lowest annual Chl a mean was observed in 2004 (4.57 ± 9.81 µg . l -1 ), closely linked to minimal summer Chl a resulted from a strong P limitation during summertime.
The work in volves as sess ing of the ma rine cur rent re gime in the north west of the Black Sea, Midia Cape-Constanta area. The area of in ter est is cho sen due its ex isting fea tures, us ing ma rine cur rents data (di rec tion and speed) within the CFD to de ter mine the dis tri bu tion of ve loc i ties and pres sures. The study on the dis tri bu tion of ve loc i ties and pres sures, ac cord ing to lo cal hy dro-me te o ro log i cal char ac ter is tic el e ments, can be used for iden ti fy ing the risk ar eas for nav i ga tion and ex ist ing hydro-tech ni cal con struc tion in dus try. Mod el ling re sults us ing the CFD anal y sis shows the cur rents ve loc ity val ues, pres sures and turbulences of the in ves ti gated ma rine re gion. The model can be used in the anal y sis and the coast line changes as well as in risk as sess ment for hy drau lic struc tures. Ad di tional pa ram e ters into the model, such as the sea wave char ac ter is tics, aim to pro vide an in di ca tion of the poten tial hy dro-dy namic power that is avail able at a de ter mined lo ca tion of in ter est.
Accreta placenta spectrum is a complex obstetrical condition of abnormal placental invasion associated with severe maternal morbidity. This study aimed to analyze our therapeutic management and counseling of the cases with placenta accreta spectrum (PAS) associated with placenta previa. We performed a retrospective study of pregnant women with PAS associated with placenta previa at the Filantropia Clinical Hospital between January 2017–April 2021. In these cases, the earlier diagnosis was realized by an ultrasonographic scan and was confirmed by histopathological findings after the surgical treatment. The conservative management was obtained in one case at <37 weeks of gestation, and the maternal outcome was uterine preservation. Among the 12 patients, the mean age was 34±3.44 years. All women had risk factors for abnormally invasive placenta, such as placenta previa or previous cesarean delivery. Most women underwent planned cesarean delivery at the mean gestational age of 36.4±0.9 weeks. In our study, the uterus was preserved in only one case (8.33%), and hysterectomy with preservation of ovaries was performed in the rest of the cases. Mean maternal blood loss during surgery was 2175±1440 ml. Severe maternal outcomes were recorded only in one case (8.33%). We identified a low uterine preservation rate and a good perinatal outcome. Conservative management should be reserved for fertility desire and extensive disease due to surgical difficulty. Early identification of the risk factors and strategic management may improve maternal and fetal outcomes.
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