Evapotranspiración y balance energético de un cultivo de soja en la región semiárida de Buenos Aires (Argentina)

Cargnel, M. D. Universidad de Buenos Aires. Facultad de Agronomía. Buenos Aires, Argentina.Orchansky, A. L. Universidad Nacional del Sur. Departamento de Agronomía. Bahía Blanca, Buenos Aires, Argentina.Brevedan, R. E. Universidad Nacional del Sur. Departamento de Agronomía. Bahía Blanca, Buenos Aires, Argentina.Baioni, S. S. Universidad Nacional del Sur. Departamento de Agronomía. Bahía Blanca, Buenos Aires´, Argentina.Fioretti, M. N. Universidad Nacional del Sur. Departamento de Agronomía. Bahía Blanca, Buenos Aires, Argentina.181-189Two field experiments were carried out in a semiarid region of Argentina over a soybean (Glycine max L. Merrill) field. The sites of study were San Adolfo (39˚ 23’ S, 62˚ 22’ W, 22 m.a.s.l.) and Nueva Roma (38˚ 29’ S, 62˚ 39’ W, 70 m.a.s.l.). Soybeans were planted on Jan 4 (San Adolfo) and Nov 27 (Nueva Roma) in 0.75 m wide rows and at 400000 pl/ha during two consecutive growing seasons. Energy balance and evapotranspiration (ET) were estimated during the reproductive stages from full bloom (R2) to full maturity (R8). In Nueva Roma ET or latent heat flux (LE) was estimated using the Bowen ratio-energy balance (BREB) (LEb) and the Priestley -Taylor equation (LEPT) with αPT=1.26, 48 h after irrigation or rain. Both methods could be used to predict ET since the ratio LEb/LEPT ranged between 0.83 and 0.95. The observed Bowen ratio values were almost 0 during and after rain and increased to approximately 0.45 several days after rain. In San Adolfo LE was estimating using the Priestley -Taylor equation. For both sites the regression analysis for comparison available energy (Rn-G) and LE using BREB or LEPT indicated that, approximately 90% of the available energy was consumed by LE without detecting significative advective conditions

Oral surgery in patients on anticoagulant treatment without therapy interruption

Purpose: Conflicting opinions exist in literature concerning the management of oral surgery in patients on oral anticoagulants because no consensus on perioperative protocols is available, including precise guidelines regarding the need for therapy modification or withdrawal. The aim of this study was to evaluate bleeding complications associated with oral surgery performed in patients on oral anticoagulants without therapy modification or withdrawal but following a standardized comprehensive perioperative management protocol. Patients and Methods: Patients on oral anticoagulant therapy with warfarin and in need of oral surgery underwent a thorough general and oral clinical evaluation to assess thromboembolic and bleeding risk; 255 subjects who, on the morning of surgery, had INR values 5.5 were included in the study. An atraumatic surgical technique was carried out and all patients received postoperative careful instructions. Results: Five cases (1.96%) of bleeding complication were observed in patients with moderate to high thromboembolic and bleeding risk. Conclusion: The findings from this study suggest that a comprehensive perioperative management protocol for oral surgery in patients on oral anticoagulants including 1) thromboembolic and bleeding risk assessment, 2) an atraumatic surgical technique, and 3) postoperative careful instructions, can lead to safe and successful results with minimal complications

Feasibility of assessing autonomic dysregulation at a distance: the case of the HIV-positive patient

Alterations in lipid metabolism are a possible consequence of highly active antiretroviral therapies (HAART) for human immunodeficiency virus (HIV)-positive patients with consequent increase of cardiovascular risk. In this context we hypothesized that both acquired immunodeficiency syndrome (AIDS) and HAART might be associated to alterations in autonomic cardiovascular regulation. In this preliminary investigation we enrolled a total of 66 men, subdivided in two groups, 33 HIV-positive patients, and 33 healthy controls, and we tested the hypothesis that heart rate variability (HRV) of HIV positive patients can be assessed with a transtelephonic approach from the HIV clinic: 100% of the total of electrocardiograms (ECG) recordings that were sent from the distant site were successfully received and analyzed. Evaluation of the signal was subsequently performed in the centralized laboratory, and consisted in extracting the RR interval variability (RRV) series and afterward subjecting it to autoregressive spectral analysis. This study shows the feasibility of obtaining, from personnel without specific training, adequate RR variability data for further spectral analysis form a distant specialized autonomic laboratory. This feature is of critical importance in the context of possible large-scale application of this simple telemedicine approach

Indagine sul profilo dell'utenza e sulla tipologia delle prestazioni erogate al Pronto soccorso odontoiatrico di un ospedale milanese

Objectives. To describe the treatments provided to patients searching dental emergency care at the Unit\ue0 Operativa Odontostomatologia II of Azienda Ospedaliera San Paolo in Milan, Italy. Materials and methods. From May to August 2010, data were collected on the outpatients attending such service by means of a survey and a form. Results. Most patients complained of dental pain. The most frequent pathologies were of dental and periodontal nature. The most frequent treatments included radiographs, drugs prescription and tooth extraction. The 85% of the patients thought that dentistry is too expensive but only 35% would go more often to the dentist if it were cheaper. Conclusions. For those who do not regularly to the dentist, the cost might not be the main reason for their lack of oral health care