The Overview of Silicon Carbide Technology: Status, Challenges, Key Drivers, and Product Roadmap.

Arguably, SiC technology is the most rapidly expanding IC manufacturing technology driven mostly by the aggressive roadmap for battery electric vehicle penetration and also industrial high-voltage/high-power applications. This paper provides a comprehensive overview of the state of the art of SiC technology focusing on the challenges starting from the difficult and lengthy SiC substrate growth all the way to the complex MOSFET assembly processes. We focus on the differentiation from the established Si manufacturing processes and provide a comprehensive list of references as well as a brief description of our own research into the key manufacturing processes in this technology.

Investigation of the Microstructure, Optical, Electrical and Nanomechanical Properties of ZnOx Thin Films Deposited by Magnetron Sputtering.

The paper presents the results of an investigation of the influence of technological parameters on the microstructure, optical, electrical and nanomechanical properties of zinc oxide coatings prepared using the pulsed reactive magnetron sputtering method. Three sets of ZnOx thin films were deposited in metallic, shallow dielectric and deep dielectric sputtering modes. Structural investigations showed that thin films deposited in the metallic mode were nanocrystalline with mixed hexagonal phases of metallic zinc and zinc oxide with crystallite size of 9.

Nano-Ag Particles Embedded in C-Matrix: Preparation, Properties and Application in Cell Metabolism.

The application of nano-Ag grains as antiviral and antibacterial materials is widely known since ancient times. The problem is the toxicity of the bulk or big-size grain materials. It is known that nano-sized silver grains affect human and animal cells in some medical treatments.

Application of Wireless Accelerometer Mounted on Wheel Rim for Parked Car Monitoring.

Damages of different kinds that can be inflicted to a parked car. Among them, loosening of the car wheel bolts is difficult to detect during normal use of the car and is at the same time very dangerous to the health and life of the driver. Moreover, in patents and publications, only little information is presented about electronic sensors available for activation from inside of the car to inform the driver about the mentioned dangerous situation.

Usefulness of Pancreas Donor Risk Index and Pre-Procurement Pancreas Allocation Suitability Score: Results of the Polish National Study.

BACKGROUND Pre-procurement pancreas suitability score (P-PASS) and pancreas donor risk (PDRI) index are scoring systems believed to predict suitability of pancreatic grafts. Most European countries and the United States apply PDRI, while Poltransplant keeps using P-PASS: more than 16 points raises a red flag for graft use. Recent data discourage use of PDRI to predict pancreas graft survival.

Usefulness of Modified Dindo-Clavien Scale to Evaluate the Correlation Between the Severity of Surgical Complications and Complications Related to the Renal and Pancreatic Grafts After Simultaneous Kidney and Pancreas Transplantation.

Objective: Simultaneous pancreas and kidney transplantation (spktx) is the multiorgan transplantation. Thus various complications originated from transplanted organs and the complications that are not directly related to pancreatic or renal grafts could be developed at the same recipient.

Aim: The aim of this study is to explore whether there is a correlation between the severity of complications originated from transplanted pancreas, transplanted kidney and general surgical complication developed at the same spktx recipient.

Surgical Complications Not Related to the Renal and Pancreatic Grafts After Simultaneous Kidney and Pancreas Transplantation.

Background: Simultaneous pancreas and kidney transplantation (SPKTx) is the most commonly performed multiorgan transplantation procedure worldwide. Transplanted organs are the main source of complication; however, some postoperative complications are not directly related to the pancreatic or renal grafts. The goal of this study was to evaluate the prevalence, type, and severity of postoperative complications not related to transplanted kidney or pancreas among SPKTx recipients.

Bioengineered human acellular vessels for dialysis access in patients with end-stage renal disease: two phase 2 single-arm trials.

Background: For patients with end-stage renal disease who are not candidates for fistula, dialysis access grafts are the best option for chronic haemodialysis. However, polytetrafluoroethylene arteriovenous grafts are prone to thrombosis, infection, and intimal hyperplasia at the venous anastomosis. We developed and tested a bioengineered human acellular vessel as a potential solution to these limitations in dialysis access.

When less is more--case report of successful renal transplantation from a living unrelated donor to a high-risk female recipient.

Qualification for kidney transplantation for patients with a long history of renal replacement therapy and numerous medical complications requires individual analysis of all contraindications and limitations as well as advantages of the procedure. In this case report, we analyze the qualification process and posttransplantation course of a 28-year-old female patient with end-stage renal failure due to reflux nephropathy, treated with renal replacement therapy since early childhood, who received her second kidney transplant with glomerular filtration rate <40 mL/min/1.73 m(2) from a living, unrelated donor in 2009.

Role of 16-multidetector computerized tomography in evaluation of graft failure risk in patients with pancreatic graft thrombosis after simultaneous pancreas and kidney transplantation.

Background: Thrombosis of the pancreatic graft vessels is a common complication in patients after pancreas transplantation. The aim of this study was to evaluate the usefulness of 16-multidetector computerized tomography (16-MDCT) with volume rendering (VR) and maximum intensity projection (MIP) reconstruction as a predicting method of pancreatic graft loss after simultaneous pancreas and kidney transplantation.

Methods: Within 6-8 days after combined kidney-pancreas transplantation, MDCT was performed in 60 patients.

Surgical complications related to transplanted pancreas after simultaneous pancreas and kidney transplantation.

Objective: Simultaneous pancreas and kidney transplantation (SPTKx) is characterized by the high rate and variability of postoperative complications, which could be a limitation of this treatment. The aim of this study was to evaluate prevalence, types, and severity of postoperative complications due to pancreas graft among the simultaneous pancreas and kidney recipients.

Methods: Postoperative complications related to transplanted pancreas among 112 SPTKx recipients were analyzed.

Early complications related to the transplanted kidney after simultaneous pancreas and kidney transplantation.

Objective: Simultaneous pancreas and kidney transplantation (SPKTx) is the most often performed multiorgan transplantation. The main source of complication is transplanted pancreas; as a result, early complications related to kidney transplant are rarely assessed. The aim of this study was to evaluate prevalence, types, and severity of postoperative complications due to kidney graft among the simultaneous pancreas and kidney recipients.

Quality of pancreatic transplant program assessment using a risk-adjusted cumulative sum chart: experience from a single, small center.

Background: The high rate of complication after pancreas transplantation not only had an impact on recipient quality of life and survival but also had significant financial implications. Thus, monitoring transplant center performance was crucial to indentifying changes in clinical practice that result in quality deterioration.

Objective: To evaluate retrospectively the quality of the single, small pancreatic transplant program and to establish prospective monitoring of the center using risk-adjusted cumulative sum (CUSUM).

Multivariate analysis of complications after simultaneous pancreas and kidney transplantation.

Objective: Identification of factors that have an impact on postoperative complications after simultaneous pancreas and kidney transplantation (SPKTx) could help overcome limitations of this kind of treatment.

Methods: Postoperative complications among 112 SPKTx recipients were divided into 3 groups: related to transplanted pancreas (n = 66), related to transplanted kidney (n = 23) and general surgical complications (n = 31) 120 refers to complications among 112 recipients. According to the modified Clavien-Dindo scale, complications were classified according to their severity for each group.

Left ventricular hypertrophy in renal transplant recipients in the first year after transplantation.

Background: Left ventricular hypertrophy (LVH) is a significant risk factor for cardiovascular complications in renal transplant recipients. The study objective here was to assess LVH and related factors in renal transplant recipients in the 1st year after transplantation.

Methods: Echocardiographic examinations were performed in the early post-transplantation period in 43 patients (age, 43.

Reoperations for persistent or recurrent primary hyperparathyroidism: results of a retrospective cohort study at a tertiary referral center.

Background: Parathyroid reoperations are challenging and achieving a cure requires multidisciplinary treatment team cooperation. The aims of this study were to summarize our experience in revision surgery for persistent (pHPT) or recurrent primary hyperparathyroidism (rHPT) and to explore factors underlying failure to cure at initial surgery.

Material And Methods: This was a retrospective cohort study of patients who underwent reoperations for pHPT or rHPT at a tertiary referral center.

Xenotransplantation of human cultured parathyroid progenitor cells into mouse peritoneum does not induce rejection reaction.

Introduction: Parathyroid progenitor cells devoid of immunogenic antigens were used for human allotransplantation. Although there were many potential reasons for the expiry of transplant activity in humans, we decided to exclude a subclinical form of rejection reaction, and test the rejection reaction in an animal model.

Material And Methods: Experiments were carried out on 40 conventional male mice in their third month of life.

A comparison between two tacrolimus-based immunosuppression regimens in renal transplant recipients: 7-year follow-up.

Background: Immunosuppression (IS) following transplantation should focus on improving long-term graft and patient survival. The objective of this study was to assess patient and graft survival rates and adverse event (AE) incidence in patients treated with combinations of tacrolimus (TAC) and steroids (ST) with either azathioprine (AZA) or mycophenolate mofetil (MMF).

Material And Methods: Seventy-seven renal transplant recipients (RTRs) treated with TAC/AZA/ST (n=37) or TAC/MMF/ST (n=40) in a single center were studied retrospectively.

Endovascular repair of traumatic thoracic aortic rupture: a single centre experience.

Background: Thoracic aortic rupture is usually the result of a sudden deceleration caused by a traffic accident, fall or some other misfortune. Before the endovascular era, there was only one treatment option: open repair, burdened by high morbidity and significant mortality. Now, we have the ability to treat it with a stent graft.

Antiphospholipid antibodies in renal allograft recipients.

Background: Antiphospholipid antibodies (APLAs) are associated with an increased risk of thrombosis. The role of APLAs as a marker of thrombosis in renal recipients has not been established. We sought to determine the prevalence of APLAs in renal recipients and investigate their association with thrombosis.

Characteristics of potential living kidney donors and recipients: donor disqualification reasons--experience of a Polish center.

Introduction: Kidney transplantation is efficacious as a renal replacement, particularly pre-emptive living donation. In Poland, the rate of transplantation of living donor kidneys is only 3%. The aim of the study was to identify the most common reasons to disqualify a potential living kidney donor.

Influence of atheromatous lesions in the ilio-femoral segment on the occurrence of stentgraft thrombosis after endovascular treatment of an abdominal aortic aneurysm.

Unlabelled: Limb graft thrombosis (LGT) is one of the most frequent severe complications after endovascular repair of abdominal aortic aneurysms. The aim of the study was to assess the influence of atherosclerosis in ileo-femoral segment on the incidence of LGT as well as to analyze the methods of treatment of LGT.

Material And Methods: The medical records of 564 consecutive patients operated endovascularly for abdominal aortic aneurysm by means of bifurcated stentgrafts in the Department of General, Vascular and Transplantat Surgery of Medical University of Warsaw were analyzed.

Surgical treatment of hyperinsulinism during the course of pancreatic cancer (insulinoma) - one center experience.

Unlabelled: Endogenic hyperinsulinism is mainly caused by neuroendocrine tumors (insulinomas) which autonomously secrete insulin. Because the symptoms are often aspecific, a considerably delay in diagnosis occurs. The treatment consists of operative removal of the tumor from the pancreas, preceded by pre-operative localization.