Evaluation of Navier-Stokes and Euler solutions for leading-edge separation vortices

Extensive study on the numerical simulation of the vortical flow over a double delta wing is carried out using the thin layer Navier-Stokes and Euler equations. Two important flow characteristics, vortex interaction and vortex breakdown, are successfully simulated. Grid resolution is one of the most important factors associated with the vortex problem. Computations were performed on a series of grids with various levels of refinement, coarse, medium, and fine. Computations using either the coarse or medium grids fail to capture the proper physical phenomena. The computed result using a fine grid shows flow unsteadiness once the vortex breakdown takes place. The C sub L - alpha characteristics are well predicted up to the breakdown angle of attack for all the grid distributions. The Euler solutions show fairly good agreement with the experiment on the C sub L - alpha characteristics. However, other aspects of the solution at each angle of attack, such as the locus of the leading edge separation vortex, are not consistent with the experiment. Even for the fine grid Navier-Stokes computations, further grid resolution is required to obtain good quantitative agreement with the experiment

A case report on placental chorioangioma

Chorioangioma is the term used to describe an abnormal proliferation of vessels arising from chorionic tissue, which is most commonly observed in the third, and less frequently in the second trimester of pregnancy as a solitary nodule or, less commonly, as multiple nodules. We here report a case of placental chorioangioma which presented as a case of preterm labour. 21 year old primigravida presented to us at 26 weeks of gestation with history of PV leak and pain in abdomen. Ultrasound showed a single live foetus corresponding to 24-26 weeks of gestation with amniotic fluid index (AFI): 5 cm (oligohydramnios) there was evidence of 58×42 mm heterogeneously hypoechoic lesion noted over placenta likely s/o chorioangioma. Patient went into spontaneous preterm labour on day 5 and delivered vaginally. Placenta weighted 700 gm. A globular mass of size 6×7 cm was attached to foetal surface of placenta with a pedicle with confirmed the finding of ultrasonography. Placental chorioangioma is associated with high rates of perinatal complications. Most complications may appear early and delivery is problematic due to prematurity. Thus better prenatal investigations and regular follow up is required for early diagnosis and treatment

Intrauterine contraceptive device migration to the urinary bladder

Intravesical migration represent as uncommon complication of intrauterine device insertion. We present a case of an IUD that migrated to the urinary bladder and impacted in urinary bladder wall, causing significant urinary symptoms. A 44 years old woman presented with menorrhagia, lower abdominal pain and urinary symptoms since past 1 year. She reported an IUD insertion 10 years back. Imaging detected the presence of IUD in the urinary bladder wall with large fibroid in uterus. Under anaesthesia, total abdominal hysterectomy with bilateral salphingoophorectomy is performed and IUD was removed out of the bladder without any complications. In her follow-up evaluation after 2 week, she had no urinary symptoms. A regular follow-up of IUD for visible thread would help in earlier detection of misplaced IUD and prevent the complications such as intravesical migration

Review of Recommendation on Location Based Services

In every Era “Location” is a strong component of “Mobility” Location based services (LBS) are services offered using mobile phone by taking mobile’s geographical location. The proposed system is providing location based services and offers with respect to user interest . Vendors are allowed to post and edit an advertisement for users. The system contains various modules such as advertising , Social program, Tourist place, Parking place, Emergency calls etc. The system uses apriori algorithm for mining frequent ratings from user. This information is used to provide popularity of location. It also provides user’s feedback, ranking based suggestion in secured manner. The purpose of this system is to notify the user based on their preferences and their interest in the particular area and notify them using android application. This will lead to lower advertising costs and expenditures also save the time of user for finding the located area of ads with help of GPS

Barriers to Creutzfeldt-Jakob Disease Autopsies, California

Creutzfeldt-Jakob disease (CJD) surveillance relies on autopsy and neuropathologic evaluation. The 1990–2000 CJD autopsy rate in California was 21%. Most neurologists were comfortable diagnosing CJD (83%), but few pathologists felt comfortable diagnosing CJD (35%) or performing autopsy (29%). Addressing obstacles to autopsy is necessary to improve CJD surveillance

Identification of clinical phenotypes of peripheral involvement in patients with spondyloarthritis, including psoriatic arthritis: a cluster analysis in the worldwide ASAS-PerSpA study

OBJECTIVE: To identify clusters of peripheral involvement according to the specific location of peripheral manifestations (ie, arthritis, enthesitis and dactylitis) in patients with spondyloarthritis (SpA) including psoriatic arthritis (PsA), and to evaluate whether these clusters correspond with the clinical diagnosis of a rheumatologist. METHODS: Cross-sectional study with 24 participating countries. Consecutive patients diagnosed by their rheumatologist as PsA, axial SpA or peripheral SpA were enrolled. Four different cluster analyses were conducted: one using information on the specific location from all the peripheral manifestations, and a cluster analysis for each peripheral manifestation, separately. Multiple correspondence analyses and k-means clustering methods were used. Distribution of peripheral manifestations and clinical characteristics were compared across the different clusters. RESULTS: The different cluster analyses performed in the 4465 patients clearly distinguished a predominantly axial phenotype (cluster 1) and a predominantly peripheral phenotype (cluster 2). In the predominantly axial phenotype, hip involvement and lower limb large joint arthritis, heel enthesitis and lack of dactylitis were more prevalent. In the predominantly peripheral phenotype, different subgroups were distinguished based on the type and location of peripheral involvement: a predominantly involvement of upper versus lower limbs joints, a predominantly axial enthesitis versus peripheral enthesitis, and predominantly finger versus toe involvement in dactylitis. A poor agreement between the clusters and the rheumatologist's diagnosis as well as with the classification criteria was found. CONCLUSION: These results suggest the presence of two main phenotypes (predominantly axial and predominantly peripheral) based on the presence and location of the peripheral manifestations