0.5V 3rd-order Tunable gm-C Filter

This paper proposes a 3rd-order gm-C filter that operates with the extremely low voltage supply of 0.5V. The employed transconductor is capable for operating in an extremely low voltage power supply environment. A benefit offered by the employed transconductor is that the filter’s cut-off frequency can be tuned, through a dc control current, for relatively large ranges. The filter structure was designed using normal threshold transistors of a triple-well 0.13μm CMOS process and is operated under a 0.5V supply voltage; its behavior has been evaluated through simulation results by utilizing the Analog Design Environment of the Cadence software

An unusual case of uterine leiomyoma vs. hemangiopericytoma: diagnostic dilemma solved by immunohistochemistry

Case report of a 45 year, multiparous, widow lady, who underwent total hysterectomy and bilateral salpingo-oophorectomy for uterine mass of 20 weeks. Microscopic examination revealed a hemangiopericytoma (HPC) of uterus, finally confirmed as uterine leiomyoma with cystic degeneration and HPC-like focal areas without atypia on immunohistochemical staining

Ricinus communis and Calotropis procera As Putative Plant Species for the Phytostabilization of Tannery Contaminated Soil: A Dynamic Approach

The present study involves the assessment of four metals (Cr, Pb, Cu, and Mn) and their mobility (primary and dynamic translocation and bioconcentration factors) in Ricinus communis and Calotropis procera growing in tannery contaminated soil (TCS) and control soil (CS). The area is moderately to strongly contaminated withCr. Except for Cr, all the analyzed metals were found within the critical range in TCS and in both plants. The assessment of both primary and dynamic translocation and bioconcentration factors showed TF < 1 and BCF > 1 for both plants, which demonstrates the major transfer and accumulation of Cr from soil to root. As these plants are not grazed upon by grazing animals, the ecological metal transfer risks from these plants are quite low. Moreover, the high commercial importance of these plants (biofuel production and medicinal value) further enhances their utilization for the phytostabilization of moderately Cr-contaminated sites. Keywords: chromium, Ricinus communis, Calotropis procera, dynamic factors, tannery industr

ROLE OF AGNI KARMA IN SNAYU VIKARA W.S.R. TO TENNIS ELBOW

The Tennis Elbow is likely to be the most common insertional tendinopathy of the human body and is found to be associated with some particular occupations and life style. No such disease has been mentioned in the Ayurvedic text. Here in the OPD of R.G.G.P.G.A.C. & Hospital, we have a very good no. of patients of Tennis Elbow, who dont get relief by the conservative management and also do not want to go for Local anesthetic and hydrocortisone. And also it is found that Local anesthetic and hydrocortisone is not a standard treatment for these patients and the surgery is beyond the capacity of the patients of a developing country like ours and also has its own risk. In Sushruta samhita, Agnikarma has been mentioned for disorders of Snayu (ligaments and tendons), Asthi (bone), Sandhi (joints). In Ayurveda, Snayu Vikara can be correlated with the condition of tennis elbow. This therapy provided considerable relief in pain and movement of the elbow joint. Therefore, a study has been designed to understand this disease on Ayurvedic principles and to establish a standard treatment, which can cure this disease or provide long term relief and within the reach of common man and without any side effect

New Approximability Results for the Robust k-Median Problem

We consider a robust variant of the classical $k$-median problem, introduced by Anthony et al. \cite{AnthonyGGN10}. In the \emph{Robust $k$-Median problem}, we are given an $n$-vertex metric space $(V,d)$ and $m$ client sets $\set{S_i \subseteq V}_{i=1}^m$. The objective is to open a set $F \subseteq V$ of $k$ facilities such that the worst case connection cost over all client sets is minimized; in other words, minimize $\max_{i} \sum_{v \in S_i} d(F,v)$. Anthony et al.\ showed an $O(\log m)$ approximation algorithm for any metric and APX-hardness even in the case of uniform metric. In this paper, we show that their algorithm is nearly tight by providing $\Omega(\log m/ \log \log m)$ approximation hardness, unless ${\sf NP} \subseteq \bigcap_{\delta >0} {\sf DTIME}(2^{n^{\delta}})$. This hardness result holds even for uniform and line metrics. To our knowledge, this is one of the rare cases in which a problem on a line metric is hard to approximate to within logarithmic factor. We complement the hardness result by an experimental evaluation of different heuristics that shows that very simple heuristics achieve good approximations for realistic classes of instances.Comment: 19 page

A Static Optimality Transformation with Applications to Planar Point Location

Over the last decade, there have been several data structures that, given a planar subdivision and a probability distribution over the plane, provide a way for answering point location queries that is fine-tuned for the distribution. All these methods suffer from the requirement that the query distribution must be known in advance. We present a new data structure for point location queries in planar triangulations. Our structure is asymptotically as fast as the optimal structures, but it requires no prior information about the queries. This is a 2D analogue of the jump from Knuth's optimum binary search trees (discovered in 1971) to the splay trees of Sleator and Tarjan in 1985. While the former need to know the query distribution, the latter are statically optimal. This means that we can adapt to the query sequence and achieve the same asymptotic performance as an optimum static structure, without needing any additional information.Comment: 13 pages, 1 figure, a preliminary version appeared at SoCG 201

Comparative evaluation of different reference evapotranspiration models

The study was carried out to select best alternative method for the estimation of reference evapotranspi-ration (ET0). Accurate estimation of potential evapotranspiration is a necessary step in water resource management. Recently, the FAO-56 version of Penman-Monteith equation has been established as a standard for calculating ref-erence evapotranspiration (ET0) which requires measurement of a number of meteorological parameters namely, air temperature, relative humidity, solar radiation, and wind speed which may not be available in most of the meteoro-logical stations. Still there are different approaches (requiring less data) which estimate ET0 closely to Penman- Monteith (P-M) method for different climatological conditions. The present study is based on analysis of long term of 13 years (2000 to 2012) climatic data to calculate monthly reference evapotranspiration for Capsicum production (September–March) and also to compare the performance of evapotranspiration equations for Jhalawar district of Rajasthan with the standard FAO-56 Penman-Monteith method on the basis of the least root mean square error (RMSE) analysis. Hargreaves method and Pan evaporation (E-Pan) method overestimated the values of ETo when compared with FAO-56 Penman-Monteith method. On the basis of lowest value of RMSE, Pan evaporation method is found best alternative method to FAO-56 Penman-Monteith method in the study area

Analytical Study on Flexural Behaviour of Glued Laminated Timber

ABSTRACT: This study determines analytically the flexural properties of glued laminated timber beam (glulam) with different thickness of lamina and jointed lamina; it was compared to solid beam. This research used Rubber wood (Hevea brasiliensis). Glulam beam was divided into three groups based on the thickness of lamina, 20 mm, 15 mm and 10 mm respectively. Solid beam was also modelled besides glulam beam. Jointed wood with finger outside maximum moment zone in the bottom lamina was also modelled. Solid wood and laminated wood of rubber wood species was modelled and analysed in ANSYS 14.5.Then modelling of finger joint was done in Computer Aided Three-dimensional Interactive Application (CATIA) and analysed in ANSYS. The result was compared with the available experimental result. The results obtained show that the comparison of flexural properties between solid wood and horizontally glulam wood have no significant difference. Lamina thickness does not make any statistically significant difference in the flexural properties