Control System Implementation on an FPGA Platform

This paper presents PID and SMC control schemes on a Field Programmable Gate Array device (FPGA) for robot manipulators. The implementation of the control systems on FPGA by using optimal hardware resources is one of the challenging research areas in control engineering. To accomplish this, MATLAB Xilinx System Generator toolbox plays an important role in control design on an FPGA device. In this paper, FPGA-based PD and SMC controllers are designed by using MATLAB Xilinx System Generator tool for the chosen robot system. The tracking performances of the presented control schemes, implemented in Matlab/Simulink and implemented on FPGA, are compared. Robustness and good trajectory performance of the system on FPGA are demonstrated.

The leading role of thrombolysis in the management of prosthetic valve thrombosis

Isospora belli associated recurrent diarrhea in a patient with AIDS

The prevalence of antral exostoses in the maxillary sinuses, evaluated by cone-beam computed tomography

Exostoses are outgrowths of normal compact and cancellous bone and may occur in different locations of the jaw. Exostoses are a rare anatomic variation in the maxillary sinuses. The purpose of this study was to investigate retrospectively the prevalence of location, size, shape, and symmetry of exostoses in the maxillary sinus, and to assess the relationship between demographic variables (i.e., age and sex) via cone-beam computed tomography images.

A case of acute appendicitis in a patient with crossed renal ectopia

Crossed renal ectopia is a rare anomaly in urological clinical practice. Patients with this anomaly are usually asymptomatic. Herein, we reported a case of acute appendicitis in a patient with crossed renal ectopia. A 22-year-old man with abdominal pain admitted to the emergency department. His physical examination revealed muscular defense and painful mass at the lower quadrant. Abdominal ultrasonography revealed crossed renal ectopia with no sign of stones and acute appendicitis. Tomography confirmed crossed renal ectopia but not acute appendicitis. On-going clinical symptoms lead to surgical intervention and acute appendicitis diagnosis. The patient was treated with appendectomy with no perioperative complications. Appendectomy is a common surgical procedure in surgical clinical practice. Acute abdominal pain must be managed carefully in patients with unusual anatomy. Also surgeons should be aware of ectopic organs in surgical procedures, to avoid iatrogenic intraoperative injuries

Superposition of lung metastases of prostate adenocarcinoma on heart as a cardiac metastases: A case report

Background: Primary or secondary malignancies of the heart is rare and difficult to diagnosis. Most cardiac masses are detected incidentally. Positron emission tomography-computed tomography, thorax computed tomography are valuable tools for staging the disease of patient with a history of malignancy. As prognosis is poor, if a physician suspects a suspicious metastasis on heart, it must evaluated carefully in order to prompt therapeutic interventions. Herein. we report a false-positive positron emission tomography-computed tomography finding which was superposition of lung metastasis of prostate adenocarcinoma via confirming by thorax computed tomography and echocardiography.Case report: A 71-year-old man diagnosed with prostate adenocarcinoma presented with a mass on the posterior-anterior lung graphy after 8 years of the diagnosis date. Positron emission tomography-computed tomography, thorax computed tomography, echocardiography, fine needle aspiration biopsies were performed in order to reveal the final diagnose. Although positron emission tomography-computed tomography revealed a cardiac metastasis, the other tools showed that it was not cardiac metastasis but lung metastasis of prostate adenocarcinoma.Conclusion: A patient with a history of malignancy and clinical cardiac symptoms must be evaluated carefully in order to prevent a false-positive findings and to prompt therapeutic interventions

A lesion mimicking malignancy in the cesarean scar: Decidualize endometriosis

Comparison of sugammadex and neostigmine–atropine on intraocular pressure and postoperative effects

During surgery, changes in intraocular pressure (IOP) can be observed resulting from several factors, such as airway manipulations and drugs used. We aimed to investigate the effects of sugammadex and neostigmine on IOP, hemodynamic parameters, and complications after extubation. Our study comprised 60 patients, aged 18–65 years, with a risk status of the American Society of Anesthesiologists I–II who underwent arthroscopic surgery under general anesthesia. The patients were randomly assigned into two groups. At the end of the surgery, the neuromuscular block was reversed using neostigmine (50 μg/kg) plus atropine (15 μg/kg) in Group 1, and sugammadex (4 mg/kg) in Group 2. Neuromuscular blockade was monitored using acceleromyography and a train‐of‐four mode of stimulation. IOP was measured before induction and at 30 seconds, 2 minutes, and 10 minutes after extubation. A Tono‐Pen XL applanation tonometer was used to measure IOP. This showed that elevation in IOP of patients reversed using sugammadex was similar to that recorded in patients reversed using neostigmine–atropine. When heart rate was compared, there was a significant difference between basal values and those obtained at 30 seconds and 10 minutes after extubation in the neostigmine–atropine group. Extubation time (time from withdrawal of anesthetic gas to extubation) was significantly shorter in the sugammadex group ( p  = 0.003) than in the neostigmine–atropine group. The postextubation IOP values of the sugammadex group were similar to the neostigmine–atropine group. Extubation time (time from withdrawal of anesthetic gas to extubation) was significantly shorter in the sugammadex group ( p  = 0.003) than in the neostigmine–atropine group.

Segmental tuberous sclerosis in a patient with chronic kidney disease

Effect of a multi-disciplinary approach to diagnosis and management for non-lysosomal skeletal muscle glycogen storage disorders