1,086 research outputs found
Synchronous primary malignancy of head and neck- a case report
The incidence of multiple primary malignant neoplasms increases with age, reflecting an increase in overall cancer risk in older patients. Cases of two or more concurrent primary cancers are still rare, although its incidence is increasing. Here, we report the case of a 41-years female who was referred to our institution with synchronous papillary carcinoma of thyroid and Adenoid cystic carcinoma of submandibular gland. The case is being presented to emphasize that the clinicians should keep in mind that the appearance of another tumour in a patient suffering from cancer could be either a synchronous or a metachronous or a metastatic lesion
Efficacy of DWT denoising in the removal of power line interference and the effect on morphological distortion of underlying atrial fibrillatory waves in AF-ECG.
Multiwavelength Study on Solar and Interplanetary Origins of the Strongest Geomagnetic Storm of Solar Cycle 23
We study the solar sources of an intense geomagnetic storm of solar cycle 23
that occurred on 20 November 2003, based on ground- and space-based
multiwavelength observations. The coronal mass ejections (CMEs) responsible for
the above geomagnetic storm originated from the super-active region NOAA 10501.
We investigate the H-alpha observations of the flare events made with a 15 cm
solar tower telescope at ARIES, Nainital, India. The propagation
characteristics of the CMEs have been derived from the three-dimensional images
of the solar wind (i.e., density and speed) obtained from the interplanetary
scintillation data, supplemented with other ground- and space-based
measurements. The TRACE, SXI and H-alpha observations revealed two successive
ejections (of speeds ~350 and ~100 km/s), originating from the same filament
channel, which were associated with two high speed CMEs (~1223 and ~1660 km/s,
respectively). These two ejections generated propagating fast shock waves
(i.e., fast drifting type II radio bursts) in the corona. The interaction of
these CMEs along the Sun-Earth line has led to the severity of the storm.
According to our investigation, the interplanetary medium consisted of two
merging magnetic clouds (MCs) that preserved their identity during their
propagation. These magnetic clouds made the interplanetary magnetic field (IMF)
southward for a long time, which reconnected with the geomagnetic field,
resulting the super-storm (Dst_peak=-472 nT) on the Earth.Comment: 24 pages, 16 figures, Accepted for publication in Solar Physic
Increased absorption by coarse aerosol particles over the Gangetic–Himalayan region
Each atmospheric aerosol type has distinctive light-absorption
characteristics related to its physical/chemical properties. Climate models
treat black carbon as the main light-absorbing component of carbonaceous
atmospheric aerosols, while absorption by some organic aerosols is also
considered, particularly at ultraviolet wavelengths. Most absorbing aerosols
are assumed to be < 1 μm in diameter (sub-micron). Here we
present results from a recent field study in India, primarily during the
post-monsoon season (October–November), suggesting the presence of absorbing
aerosols sized 1–10 μm. Absorption due to super-micron-sized
particles was nearly 30% greater than that due to smaller particles.
Periods of increased absorption by larger particles ranged from a week to a
month. Radiative forcing calculations under clear-sky conditions show that
super-micron particles account for nearly 44% of the total
aerosol forcing. The origin of the large aerosols is unknown, but
meteorological conditions indicate that they are of local origin. Such
economic and habitation conditions exist throughout much of the
developing world. Hence, large absorbing particles could be an important
component of the regional-scale atmospheric energy balance
Denoising RF defibrillator waveforms for intracardiac atrial substrate impedance characterisation using digital filtering techniques
Estimation of atrial fibrillatory frequency by spectral subtraction of wavelet denoised ECG in patients with atrial fibrillation
Development of Single Serum ELISA and Flow Through Assay for Infectious Bursal Disease of Poultry
The infectious bursal disease (IBD) is an age-limiting viral disease of chicken affecting both broiler and layer chicks between 3 – 6 weeks of age characterized by severe immunosuppression and high mortality. The maternally derived antibodies protect chicks till they develop age – resistance, hence breeder flocks immune status monitoring regularly helps in ensuring adequate levels of maternal antibodies transfer to hatchlings and fine tuning of vaccination schedule. The conventional virus neutralization test (VNT) though gold standard, is time consuming and cumbersome. Hence, alternate immunodiagnostic tests which are simple and relatively easy to perform viz., single serum dilution enzyme linked immunosorbent assay (ELISA) for antibody titre and flow through assay (FTA) for antigen detection were developed. A standard curve was constructed by using regression analysis which helped in derivation of an equation and that allowed to demonstrate correlation between observed titre and predicted titre. At a dilution of 1:2000 of serum there was a linear relationship between predicted titres at single serum dilution and observed titre. The FTA was able to detect 200 ng / µl concentrations of IBDV. The FTA can be performed as, on spot test for detection of IBDV in suspected cases
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