1,660 research outputs found
Aggressive Fibromatosis in Neck.
Aggressive fibromatosis (AF) is a locally aggressive infiltrative low-grade benign tumor that accounts for approximately less than 3% of all soft tissue tumors. In the head and neck region this tumor tends to be more aggressive and associated with significant morbidity. Aggressive surgery is a viable management option and may be successfully used as a single modality treatment, or in combination with radiotherapy. We report a rare case of AF in a 38 year old female, who presented with a painless mass over the left supraclavicular fossa, extending inferiorly into the thoracic inlet, which was excised successfully in toto with the help of cardiothoracic vascular surgeon (CTVS)
Weyl type gravity observational constrained cosmological model
In this paper, we have studied the dynamical aspects of the cosmological
model of the Universe in the Weyl type gravity, which is an extension
of symmetric teleparallel gravity. The non-metricity scalar has been
expressed in standard Weyl form and can be determined by a vector field
and the trace of energy momentum tensor denoted as . The
logarithmic form of the Hubble parametrization has been incorporated and the
best fit values of the free parameters have been determined using
sample points, and data points. The present value
of the , and
respectively for , and datasets. With the constrained
values of the free parameters, the cosmographic parameters are constrained and
the present value of each parameter has been noted. The deceleration parameter
for , and datasets
provides , and respectively at present time. We
have considered exponential and non-linear form of the Weyl type function
to assess the dynamical behaviour of the model. The accelerating
cosmological models show the quintessence behaviour at present time as we get
the present EoS parameter values obtained as and
for , and
for and and for respectively.Comment: 14 pages, 11 Figures. Accepted version: Physics of the Dark Univers
LNA for UWB transceiver using 0.18µm CMOS Technology
An Ultra WideBand CMOS Low Noise Amplifier (LNA) is presented. Due to really low power consumption and extremely high data rates the UWB standard is bound to be popular in the consumer market. The LNA is the outer most part of an UWB transceiver. The LNA is responsible for providing enough gain to the signal with the least distortion possible. CMOS 0.18µm TSMC technology has been chosen for the design of the LNA at the transistor level. As many as five on chip inductors are implemented for the proper gain shaping over the frequency range of 3.1GHz to 10.6GHz. A noise figure of 3.98 dB is achieved to make sure noise contribution of the amplifier is as low as possible
Constrained cosmological model in gravity with non-linear non-metricity
The cosmological model has emerged as a promising framework for
understanding various aspects of cosmic evolution. In this study, we focused on
obtaining the constraints of the free parameters in the non-linear form of
non-metricity in gravity using the , , and
datasets. To determine the best-fit values for the model parameters and the
equation of state (EoS) parameter, we employed an MCMC analysis. By examining
the error bar plots, we observed that both the model curve and the CDM
curve successfully passed through the range obtained from the datasets.
Additionally, we studied the state finder diagnostics and energy conditions to
gain insights into the properties of the model. Furthermore, we conducted an
analysis using the diagnostic, which provides a null test for the
validity of the CDM model.Comment: 11 pages, 7 figure
Performance of Bajra Napier Hybrid Varieties in North Konkan Zone of Maharashtra
Napier grass (Pennisetum purpureum) commonly referred to as elephant grass, is popular fodder crop for small scale dairy farmers in the high and medium potential dairy production areas of north konkan zone of Maharashtra under the cut & carry system of production. It is a fast growing, deeply rooted, perennial grass growing up to 4 m tall that can spread by underground stems to form thick ground cover. Napier is easy to establish and persistent, drought tolerant, suitable for cutting and very good for silage making. It is also used as a soil stabilizer in soil conservation methods and can be intercropped with various forage legumes. It is vulnerable to disease and pest attacks. It can be grown at an altitude of 2000 m above mean sea level. When grown at altitudes above 2000 m, growth and regeneration after cutting is slow and it may die due to frost. It does best in high rainfall areas, over 1500 mm per year. Napier grass can grow in almost any soils; but does best in deep, fertile, well drained soils. Keeping the above things in view, the present investigation was carried out to find out the suitable Bajra Napier Hybrid varieties for north konkan zone of Maharashtra
Performance of Guinea Grass Varieties in North Konkan Zone of Maharashtra
Guinea grass (Panicum maximum) is native to Africa but this grass was introduced to almost all tropical countries as a source of animal forage. It grows well on a wide variety of well drained soils of good fertility and it is suitable to stop soil erosion. It can survive quick moving fires which does not harm the underground roots and drought because of the deep, dense and fibrous root system. Guinea grass is a colonizer of disturbed sites, including roadsides, and particularly untended areas. This robust grass forms clumps and may foster soil erosion in invaded areas. Guinea grass is a perennial crop and may form quite large clumps. Commonly found at around 1.5 m tall, some individuals have recorded at 3 m tall. The leaf blades are long, narrow and finely tipped. They have a prominent mid-rib and are approximately 1 cm wide. Seed heads are large (up to 40 cm long) and are well-spread, with a large number of fine branches. Seeds are oblong in shape and are often purple in colour. Keeping the above context in view, the present investigation was carried out for studying the performance of Guinea grass varieties in north konkan zone of Maharashtra
Unusual Esophageal Twin Foreign Body (Glass Marble) in a Neonate
Although ingestion of foreign body in oesophagus is common in pediatric age group, its occurrence in neonatal period is rare. Etiology behind these foreign bodies may be negligence or homicidal attempt for unwanted child. A high index of suspicion is required for diagnosis, whenever the neonate presents with symptoms related either to the respiratory or gastrointestinal tract. Delayed diagnosis can result in serious complications. We report a very unusual case of twin foreign body (glass marble) in oesophagus in a 30 days old female neonate. The peculiarity of this case concerns the unusual foreign body and age of the patient
Study on eggs of Japanese quail (Coturnix coturnix japonica) during incubation in the controlled laboratory conditions
Study on newly laid eggs of Japanese quail Coturnix coturnix japonica was undertaken for a period of 18 days on incubation in controlled laboratory conditions. The aim of the study was to evaluate the changes in egg weight, shell weight, yolk weight and embryo weight throughout the period of incubation. It had been found that as the embryo grows, the egg weight slowly goes down while embryo weight goes on increasing day by day. The study inferred that the shift or reduction in weight of egg is attributable to the progressive growth of embryo which utilizes its yolk contents for its growth. Apart from this, the shell weight also reduced from first day to last day in order to facilitate hatching of the embryo
Preheating of Sinter Mix
The importance of gas permeability in sinter mix is emphasised with reference to productivity of the Sinter machine. Based on the favourable experience of preheating of Sinter mix in U.S.S.R., the Sinter Plant Number 2 of Bhilai, in association with RDCIS, Ranchi, has evolved a system of preheating the mix in the bunker with the steam, resulting in 10oC increase
- …