Uncommon presentation of a ganglionic cyst: a case study of intra muscular ganglion cyst of rectus femoris

Ganglionic cyst most commonly occurs in hand and wrist. When it presents in uncommon location like in lower limb, it causes a diagnostic dilemma. One such case is ours, an uncommon presentation of intra muscular cystic ganglion of rectus femoris. Due to its unlikely presentation in rectus femoris, diagnosis and management was delayed. A 12 years old boy presented with complaints of pain and swelling over left lower limb in suprapatellar region. On radiographic and ultrasound examination, swelling was found to be cystic lesion in rectus femoris. Histopathological examination of biopsied specimen was found to be intra muscular ganglion cyst of rectus femoris. The patient’s general condition improved with betterment in laboratory parameters, resolution of the lesion, without any sequelae, no residual deformity and excellent clinical outcome. To consider cystic ganglion as differential diagnosis, along with intra muscular myxoma, lipoma and synovial cyst in patients with lower limb intra muscular swelling

Harmonics Reduction of a Single Phase Half Bridge Inverter

This paper displays a way to deal with minimize the sounds contained in the output of a solitary stage half scaffold inverter. With a perspective to decreasing Harmonic a LC low pass filter is utilized which hinders the music and irrefutably passes verging on sinusoidal yield at the yield terminal. A representation of Fourier Transform has been given in this paper with a specific end goal to see both the basic and music part decisively. It has been found from recreation that the Total Harmonic Distortion (THD) previously, then after the fact the application is 44.999% and 0.0183% separately. That is the reason, this LC low pass channel is very compelling to diminish THD of a 1-stage half extension inverter

Demonstration of base catalyzed decomposition process, Navy Public Works Center, Guam, Mariana Islands

Base Catalyzed Decomposition (BCD) is a chemical dehalogenation process designed for treating soils and other substrate contaminated with polychlorinated biphenyls (PCB), pesticides, dioxins, furans, and other hazardous organic substances. PCBs are heavy organic liquids once widely used in industry as lubricants, heat transfer oils, and transformer dielectric fluids. In 1976, production was banned when PCBs were recognized as carcinogenic substances. It was estimated that significant quantities (one billion tons) of U.S. soils, including areas on U.S. military bases outside the country, were contaminated by PCB leaks and spills, and cleanup activities began. The BCD technology was developed in response to these activities. This report details the evolution of the process, from inception to deployment in Guam, and describes the process and system components provided to the Navy to meet the remediation requirements. The report is divided into several sections to cover the range of development and demonstration activities. Section 2.0 gives an overview of the project history. Section 3.0 describes the process chemistry and remediation steps involved. Section 4.0 provides a detailed description of each component and specific development activities. Section 5.0 details the testing and deployment operations and provides the results of the individual demonstration campaigns. Section 6.0 gives an economic assessment of the process. Section 7.0 presents the conclusions and recommendations form this project. The appendices contain equipment and instrument lists, equipment drawings, and detailed run and analytical data

Comparative analysis of two different treatments by surgery: Distal femoral fractures

Introduction: A controversial topic has been the treatment of distal femoral fractures and it was recently evolved towards indirect reduction and minimally invasive techniques.Ob­jective: Comparing the results of the surgical treatment with the minimally invasive stabilization of distal femoral fractures with a plate with screws for appendage compression.Mate­rial and methods: Patients treated surgically between January 2016 and January 2018 with distal femoral fractures were evaluated retrospectively. From each patient record, the following variables were recorded: age, sex, fracture form and injury mechanism, type of implant used, operating time and postoperative bleeding. The Neer scale was used to comparing the anatomical, radiological, and useful outcomes of each technique.Results: the total number of patients was 59; 33 males and 26 females; 58 years was the mean age. A screw plate was used for appendage compression purposes in 36 patients and a minimally invasive stabilization system in 23 patients. The cases handled had a shorter operating time and less in traoperative bleeding with a minimally inbuilt stabilization system. The Neer scale analytical victimization results were similar for each of the modalities.Conclusions: Patients with distal third of the femur fracture managed with a minimally invasive stabilization system had higher outcomes, which were not vital on the Neer scale, mainly due to lower pain intensity, early mobilization and less functional impact

Effect of an ulnar styloid Base unrepaired fracture on outcome after plate fixing of a distal radus fracture

Background: The impact of an unrepaired ulnar styloid base fracture on recovery after internal fixation of a distal part of the radius fracture is uncertain. To test the hypothesis that there is no difference in wrist motion or function scores between those with an untreated fracture of the ulnar styloid base and those without ulnar fracture, we assessed a series of patients with an internally fixed fracture of the distal part of the radius. Methods: In a prospective study of plate-and-screw fixation of distal radial fractures, two cohorts of seventy-six matched patients, one with a fracture of the ulnar styloid base and the other without ulnar fracture, were retrospectively analysed. They matched patients for age, sex, type of AO fracture, and mechanism of injury. The two cohorts were analyzed at six, twelve and twenty-four months postoperatively for differences in motion, grip strength, pain, the Gartland and Werley score, arm, shoulder, and hand score disabilities, and the Short Form-36 score. Sixty-four patients with < 2mmof displacement of a ulnar styloid base fracture were compared with forty-nine patients with greater displacement in a second analysis. With the use of regression analysis and the probability ratio test, differences between cohorts and cohorts were determined over time. Results: No significant differences were found at any of the follow-intervals between patients with an unrepaired fracture of the base of the ulnar styloid and those without ulnar fracture. However, at six months, there was a trend towards lower grip strength (71 percent [on the contralateral side] compared to 79 percent; mean difference, 28 percent [95 percent confidence interval= 215.3 percent to 20.6 percent]; p= 0.03) and lower bending (54 compared to 59; mean difference, 25[95 percent confidence interval= 211.7 to 20.8]; p= 0.02) and ulnar deviation (32 compared with 59). There were no significant differences in any measurement of the tested outcome between patients with a displacement of an unrepaired fracture of the ulnar styloid base and patients with less displacement. Conclusions: After treatment of a distal radial fracture with plate-and-screw fixation, an unrepaired fracture of the base of the ulnar styloid does not appear to influence function or outcome, even when the ulnar fracture was initially displaced ≥2mm. Keywords: ulnar styloid, distal radial, fracture, plate fixing, unrepaired fracture

Self-Assembled Synthesis of Porous Iron-Doped Graphitic Carbon Nitride Nanostructures for Efficient Photocatalytic Hydrogen Evolution and Nitrogen Fixation

In this study, Fe-doped graphitic carbon nitride (Fe-MCNC) with varying Fe contents was synthesized via a supramolecular approach, followed by thermal exfoliation, and was then used for accelerated photocatalytic hydrogen evolution and nitrogen fixation. Various techniques were used to study the physicochemical properties of the MCN (g-C3N4 from melamine) and Fe-MCNC (MCN for g-C3N4 and C for cyanuric acid) catalysts. The field emission scanning electron microscopy (FE-SEM) images clearly demonstrate that the morphology of Fe-MCNC changes from planar sheets to porous, partially twisted (partially developed nanotube and nanorod) nanostructures. The elemental mapping study confirms the uniform distribution of Fe on the MCNC surface. The X-ray photoelectron spectroscopy (XPS) and UV-visible diffuse reflectance spectroscopy (UV-DRS) results suggest that the Fe species might exist in the Fe3+ state and form Fe-N bonds with N atoms, thereby extending the visible light absorption areas and decreasing the band gap of MCN. Furthermore, doping with precise amounts of Fe might induce exfoliation and increase the specific surface area, but excessive Fe could destroy the MCN structure. The optimized Fe-MCNC nanostructure had a specific surface area of 23.6 m2 g−1, which was 8.1 times greater than that of MCN (2.89 m2 g−1). To study its photocatalytic properties, the nanostructure was tested for photocatalytic hydrogen evolution and nitrogen fixation; 2Fe-MCNC shows the highest photocatalytic activity, which is approximately 13.3 times and 2.4 times better, respectively, than MCN-1H. Due to its high efficiency and stability, the Fe-MCNC nanostructure is a promising and ideal photocatalyst for a wide range of applications