WORKING CHARACTERISTICS COMPARISON OF DIFFERENT PV MODULES UNDER THE SAME CONDITIONS OF SOLAR IRRADIANCE

Diplomsko naloga opisuje sončne celice, fotonapetostne module in na kratko opisuje tudi ostale elemente fotonapetostnega sistema. Osredotočili smo se predvsem na obnašanje fotonapetostnih modulov pri danih pogojih sončnega sevanja. Rezultat diplomske naloge je posamezna predstavitev in medsebojna primerjava karakteristik najpogosteje uporabljanih fotonapetostnih modulov v praksi. To so moduli iz polikristalnega, monokristalnega in amorfnega silicija. V delu so predstavljeni tudi standardi in predpisi s področja fotonapetostnih sistemov.Diploma thesis describes the solar cells, photovoltaic modules and also briefly describes the other elements of photovoltaic system. It focuses mainly on the behavior of photovoltaic modules in given conditions of solar irradiance. The result of diploma thesis is individual presentation and comparison of characteristics of photovoltaic modules most commonly used in practice. These are the modules of polycrystalline, monocrystalline and amorphous silicon. In this paper are also presented the standards and regulations regarding photovoltaic systems

Is Surgery in Autoimmune Pancreatitis Always a Failure?

Autoimmune pancreatitis is a rare form of chronic pancreatitis of presumed autoimmune etiology. Due to significant overlap in clinical and imaging characteristics, misdiagnosis as a pancreatic malignancy is common. As a result, a significant number of patients undergo a major pancreatic resection, associated with considerable morbidity, for a disease process that generally responds well to corticosteroid therapy. In the past ten years, important advances have been made in understanding the disease. Several diagnostic criteria have been developed to aid in diagnosis. Despite this, pancreatic resection may still be required in a subset of patients to reliably exclude pancreatic malignancy and establish a definite diagnosis of autoimmune pancreatitis. This article aimed to define the role of surgery in autoimmune pancreatitis, if any. For this purpose, published case series of patients with a diagnosis of autoimmune pancreatitis, based on the histopathological examination of surgical specimens, were reviewed and patients’ clinical, radiological and serological details were assessed. At the end, histopathologic examinations of patients who underwent pancreatic resection at our department in the last 10 years were retrospectively reviewed in order to identify patients with autoimmune pancreatitis and assess their clinical characteristics

Bicycle handlebar injury in a child resulting in complex liver laceration with massive bleeding and bile leakage

INTRODUCTION: Bicycle accidents are a significant cause of traumatic morbidity in the paediatric population. The handlebar injuries are usually isolated and remain a major source of bicycle related morbidity. We present a case of severe liver laceration with left hepatic ducttransection caused by handlebar trauma in a 13-year-old boy. CASE PRESENTATION: An otherwise healthy 13-year-old Caucasian male patient was rushed to the hospital following a blunt abdominal trauma from a bicycle handlebar. An ultrasound revealed extensive free intraperitoneal fluid with accompanying features of hemodynamic instability. Operative findings included massive haemoperitoneum, a deep laceration almost separating left and right liver lobes, and a near-complete interruption of the left hepatic duct. Interestingly, the vascular anatomy of the left liver lobe was preserved. After haemostasis was established a duct-to-duct anastomosis of the ruptured left hepatic duct was performed. A T-tube biliary drainage was inserted, and intraoperative cholangiography showed no extraluminal spillage of contrast. During the recovery phase, cholangiography was performed several times revealing leakage from left hepatic duct. The leakage was managed conservatively and finally stopped. DISCUSSION: Management of blunt hepatic injuries has remarkably changed from mandatory operation to mostly nonoperative interventions with selective operative management. Hemodynamic instability remains the main reason for exploratory laparotomy. Near-isolated laceration of main hepatic ducts is an extremely rare finding, and immediate reconstruction is the best option if an experienced surgeon is available. CONCLUSION: Due to limited evidence, we recommend consultation with an experienced HPB surgeon on a case-by-case basis for every paediatric biliary injury