48 research outputs found
Satellite Image Denoising Using Discrete Cosine Transform
The process of adding and removing the noises to an image is said to be as Image denoising. The process can be used in many image applications. This paper presents a method of satellite image denoising scheme using a wavelet transform called as Discrete Cosine Transform (DCT). The noise that is added in this scheme is the salt and pepper noise. By using hard thresholding method in the noise image the co-ordinates of the image can be changed and the original image can be retrieved by removing the noise. This can be done by Inverse Discrete Cosine Transform (IDCT). The performance measures of the proposed system can be done by measuring the PRNR values of the denoised image
Extraction of NOx and Determination of Nitrate by Acid Reduction in Water, Soil, Excreta, Feed, Vegetables and Plant Materials
Different methods are available for extracting NOx from different
samples. A judicious combination of lead acetate, sodium hydroxide and
magnesium chloride has been devised to enable extraction of NOx from
different samples ensuring removal of potential interfering agents. The
method provides over 95 per cent mean recovery with nearly 3 per cent
accuracy and precision. Nitrite is determined by Griess reaction, and
removed from samples by urea treatment to obviate any interference by
nitrite in nitrate determination. Nitrate is determined by acid
reduction method with minimum detection limit 0.5 ppm as N. The methods
have been applied to selected environmental samples including food
materials and excretory products. The average nitrate levels (as ppm N)
found in water (0.8), soil (9), human urine (43), sheep excreta (2654),
chicken feed (29), radish (270), spinach (222), carrot (194), potato
(41), cabbage (11), tomato (2), Bermuda grass (175) and morning-glory
leaves (576) have been within safe and documented limits. The average
levels of nitrite, as ppm N, have generally ranged from 0.04 to 2.1
with highest content, 13, in sheep fecal matter. The protocol is
intended for general use in environmental analysis, toxicological
investigations and risk assessments. @JASE
Elastic nailing of the femoral fractures in the 6-10 year age: a study from Kashmir
Background: Fractures of the femur are amongst the most common paediatric orthopaedic injuries. The aim of this study was to assess the efficacy of the stainless steel elastic nail in the management of these fractures in the 6-10 year age group.Methods: Fifty patients in the age group of 6-10 years with displaced diaphyseal femoral fractures were stabilized with these nails. Patients were followed up clinically and radiologically for a minimum period of 1 year.Results: There were 64% excellent and 34% satisfactory results. 2% patients had poor result.Conclusions: These nails are a relatively easy to use, minimally invasive, physeal-protective implant system with high rate of satisfactory and excellent outcomes in children aged 6-10 years
Open reduction and internal fixation in a case with transscaphoid perilunate dislocation 8Â months after the injury: a patient with a 5-year follow-up
The management of perilunate dislocations diagnosed later than three months continue to elicit debate with literature being scarce. We report a 22-year-old male with transscaphoid perilunate dislocation who reported to our hospital 8Â months after sustaining the injury. Open reduction was done along with bone grafting. Five years after the surgery the patient is symptom-free with an excellent range of motion
The reciprocal ledge closing wedge osteotomy for post traumatic coxa vara
To report a proximal femoral osteotomy with retention of bone ledges in a reciprocal position to increase bone contact and stability. The method was applied to 5 patients over a 3-year period. All patients had coxa vara. The average length gained was 1.5 cm, and the average neck shaft angle improvement was 30°. The Harris hip score improved from an average of 63 to 82. The reciprocal ledge osteotomy is technically less demanding and also allows conversion of normal shear forces around the upper femur to stabilizing forces. This method allows easier use of the DHS implant as potential rotation about the axis of the screw is negated by the ledges and the dynamic forces
Treatment of ipsilateral high energy tibial plateau and calcaneal fractures by a circular wire fixator: a case report
Use of the Ilizarov apparatus to improve alignment in proximal humeral fractures treated initially by a unilateral external fixator
One of the recommended methods for the management of displaced unstable proximal humeral fractures is the unilateral external fixator. In polytrauma cases this method may be especially useful for the stabilisation of these fractures. However, problems may arise if the fracture is fixed in a malaligned or distracted position. Conversion of the treatment concept to other modalities is difficult because of the problem of pin tract infection. The Ilizarov apparatus provides an useful method in such situations, as it allows distraction, translation and compression without the need for further anaesthesia and additional fixation
Helminth infection in coldwater fishes of Suru river Ladakh, Jammu and Kashmir, India
A helminthological survey of coldwater fishes of Ladakh was carried out from November 2007 to April 2009 (18 months). A total of 93 fishes belonging to two species viz., Schizothorax plagiostomus and Diptychus maculatus were collected and examined from different collection sites of Suru river, Kargil. A total of 2 helminth species viz., Neoechinorhynchus yalei Datta, 1936 and Rhabdochona himalayai Fotedar & Dhar, 1977 belonging to two helminth groups, i-e. Acanthocephala and Nematode were reported. It was found that out of 93 hosts examined, 31 were found infected with 43 parasites recovered in total, with an overall prevalence, mean intensity and abundance of 33.33%, 1.38 and 0.46 respectively. Distribution of helminth infection and its relation with sex and size of host was analysed. The helminth infection showed no significant relationship with sex of hosts however it showed mostly significant relation to size of host
Negative pressure wound therapy: eleven-year experience at a tertiary care hospital
Background: Management of complicated wounds is a reconstructive challenge. A reconstructive surgeon has to be ready to face new challenges every day. Negative pressure wound therapy has revolutionized the management of complex wounds. We are presenting our experience with this wound care modality in the past 11 years.Methods: It was a prospective study conducted from January 2006 to December 2016 on patients having wounds of varied etiologies, who consented to participate in this study. Custom made low cost NPWT was used till definitive wound closure.Results: A total of 568 patients consented to participate in the study during these 11 years. No major complications were seen. Most of these were males (60.73%) in their 3rd and 4th decade. Trauma was the leading cause of wounds in 38.14%, followed by diabetic foot wounds in 21.5%. Ankle and foot was the most common site of wounds (30.92%) followed by leg (24.01%). A total of 322 small, 218 medium and 97 large size dressings were used. Most of the patients improved with the NPWT. No major complications were seen.Conclusions: NPWT is safe, effective and has proved to be revolutionary in managing difficult wounds. With the use of customized low cost NPWT the benefit can be extended to underprivileged population in under developed nations too
Role of Repeat Transurethral Resection of Bladder Tumours after Primary Resection: A Retrospective Cross-sectional Study
Introduction: Bladder Cancer (BC) is the second most common
cancer of the urinary tract. Initial treatment by Transurethral
Resection of Bladder Tumour (TURBT) helps guide treatment.
In High Grade (HG) and invasive cancers, improved staging is
achieved by performing a repeat (rTURBT).
Aim: To examine the outcome, residual disease, complications,
outcomes and quality of procedure of repeat TURBTs at the
study tertiary center.
Materials and Methods: This was a retrospective study
conducted at the Department of Urology in Government
Medical College, Srinagar, Jammu and Kashmir, India between
October 2018 and December 2019. A total of 123 TURBT’s
were performed during the study period, of which 34 were
repeat TURBT’s. Case records were examined for each of these
patients. Student t-test and Chi-square tests were used to
compare data sets.
Results: Data was complete for 30 out of 34 patients. There
was residual disease in 12 (40%) patients. Upstaging was
seen in 2/12 (17%) of patients, down-staging in 0/12, and
same stage in 10/12 patients (83%). No disease was seen
in 18/30 (60%) of patients. No major surgical complications
occurred. In 12 patients of non-invasive, High Grade (HG)
tumours, who underwent rTURBTs, 6 (50%) were found to
have residual disease.
Conclusion: rTURBTs should be performed in all patients
with high-grade or T1 tumours. Further studies are required to
analyse risk-factors for residual disease which may narrow the
indications of rTURBT, thus saving time and costs, and reducing
need for an additional procedure