559 research outputs found
Design of near-perfect-reconstructed transmultiplexer using different modulation techniques: A comparative study
AbstractIn this paper, an efficient iterative method for design of near-perfect reconstructed transmultiplexer (NPR TMUX) is proposed for the prescribed roll-off factor (RF) and stop band attenuation (As). In this method, windowing technique has been used for the design of prototype filter, and different modulation techniques have been exploited for designing multi-channel transmultiplexer (TMUX). In this method, inter-channel interference (ICI) is iteratively minimized so that it approximately reduces to ideal value zero. Design example is given to illustrate the superiority of the proposed method over earlier reported work. A comparative study of the performance of different modulation techniques for designing TMUX is also presented
Feature Extraction using Normalized Difference Vegetation Index (NDVI): A Case Study of Jabalpur City
AbstractThis paper presents an improved method for the analysis of satellite image based on Normalized Difference Vegetation Index (NDVI). The method employs the multi-spectral remote sensing data technique to find spectral signature of different objects such as vegetation index, land cover classification, concrete structure, road structure, urban areas, rocky areas and remaining areas presented in the image. For land cover classification, some band combinations of the remote sensed data are exploited and the spatial distribution such as road, urban area, agriculture land and water resources are easily interpreteted by computing their normalized difference vegetation index. Different values of threshold of NDVI are used for generating the false colour composite of the classified objects. The simulation results show that the NDVI is highly useful in detecting the surface features of the visible area which are extremely beneficial for municipal planning and management. The vegetation analysis can be used for the situation of unfortunate natural disasters to provide humanitarian aid, damage assessment and furthermore to device new protection strategies
Respiratory Protection Against Chemical and Biological Warfare Agents
Chemical and biological warfare (CBW) agents pose unavoidable threat, both to soldiers and civilians.Exposure to such deadly agents amidst the CBW agents contaminated environment can be avoided bytaking proper protective measures. Respiratory protection is indispensable when the soldiers or civiliansare surrounded by such deadly environment as contamination-free air is needed for respiration purposes.In this context, an attempt has been made to review the literature for the past five decades on developmentof various protective devices for respiratory protection against aerosols, gases, and vapours of CBWagents. This review covers structural, textural, and adsorption properties of materials used in gas filtersand mechanical filters for the removal of CBW agents.Defence Science Journal, 2008, 58(5), pp.686-697, DOI:http://dx.doi.org/10.14429/dsj.58.169
COMPARATIVE STUDY OF THE RELATIVE EFFICACY OF KUMKUMADI CREAMS (WITH VARIOUS WATER AND OIL PHASE) FOR THEIR VYANGAHAR EFFECT
The importance of beauty and personality is increasing now a day as it is a competitive era. Along with increased demand of beautification, the problems are also increasing which cause damage to beauty or personality due to changed life style and polluted atmosphere. Among the personality damaging disorder or dis-beautifying conditions, Vyanga is such a condition which affects the beauty as well as personality. Many people are suffering from Vyanga today, among them women are commonly found due to changes occurring during pregnancy and use of cosmetics supplements. Vyanga is a KshudraRoga (skin disorder) affecting the skin for which many internal medicine and external applications are suggested in texts. Local application is more useful in skin disorders as it directly act on lesion. In the context of Vyanga, Kumkumadi Taila has been strongly suggested as it directly acts on the site of lesion and all its contents possess coloring and depigmentation properties.Kumkumadi cream with different bases was given to total 38 patients registered divided in three groups for duration of one month. All the three creams were found significantly effective (p<0.01) on moisture content of skin, size of lesion, color of lesion, itching and burning sensation of lesion. Among three, Kumkumadi cream no.2 was found most effective with relief of 67.94% in treating disease Vyanga
Dynamic Adsorptive Removal of Toxic Chemicals for Purification of Water
To determine the efficiency of carbon column for the removal of toxic chemicals from water, the adsorption of phenol in concentration range from 0.600 glt to 1.475 gll was studied on activecarbon of 80 CTC grade, 12 X 30 BSS particle size, 1280 m2/g surface area, and of coconut shell origin, under dynamic conditions at space velocity from 0.318 min-' to 4.24 min-' at 25 'C. The carbon column of 100 cm length and 2 cm diameter was found to be removing phenol from the aqueous solution of concentration 1.475 gll up to 84 min at 0.678 min-' space velocity at 5.0 ppm phenol breakthrough concentration. However, no phenol was observed in carbon-treated water after 80 min. The service life of carbon column (100 cm lengthX25 cm diameter) was assessed through the water purification system developed at the Defence Laboratory, Jodhpur and was determined to be 4.095 days with twoas factor of safety for 10 ppm initial concentration of phenol at 0.678 min-' space velocity (corresponding to water flow rate). Effects of carbon bed length, water flow rate, and the phenol concentration were also studied
The Establishment of Beijing Dance School in the First-Hand Report of Soviet Specialist O. A. Il\u27ina: Introduction, Translation, Notes
The Beijing Dance School was founded in 1954 by China\u27s Ministry of Culture to develop the dance arts through professional training in Chinese classical dance, the folk dances of the ethnic minorities and Han Chinese, and ballet and character dance. Ol\u27ga Aleksandrovna Il\u27ina\u27s report, filed with the USSR Ministry of Culture, is the only known Soviet account, covering both the intense preparations for the school and the complexities of its first year of operation. Aspects of her report provide insights into 1) the Soviet model of dance propagation and the nuts and bolts of how it produced the ballet-inflected Chinese dance genres, 2) the convergence of the military dance performance system with the professionalization of civilian dance training, and 3) China\u27s role in the dance history of the Cold War, specifically the tours of Moiseyev Dance Company and Stanislavsky and Nemirovich-Danchenko Musical Theatre. This article translates Il\u27ina\u27s report and provides an introduction and notes
A Non aqueous Formulation for Efficient Detoxification of Chemical Weapons at Sub zero Temperatures
An effective decontamination methodology based on nucleophilic non-aqueous decontaminant has been developed against chemical weapons sulfur mustard and soman. This new formulation consists of non-aqueous solution of 2-aminoethanol (60%, w/v), potassium hydroxide (2%, w/v), and N-methyl-2-pyrrolidone (38 %, w/v) and detoxified more than 99 % of sulfur mustard and soman within a period of 30 min at -35 °C. It was found to be operable over a wide range of temperatures starting from -35 °C to +55 °C without losing its fluidity and detoxicant efficiency at sub-zero temperatures promising hassle-free application against chemical weapons. It degrades sulfur mustard to divinyl sulfide and 2-chloroethyl vinyl sulfide and converted soman into O-pinacolyl O’-(2-amino) ethyl methylphosphonate, which are relatively non toxic to humans. This formulation is environmentally benign, relatively non corrosive and has an improved capability to dissolve and decontaminate chemical weapons within 15 minutes at ambient conditions. This approach paves the way for efficient and rapid decontamination platform for chemical weapons and holds considerable promise for field application in near future
Grid operations with high penetration of photovoltaic systems
Paper presented to the 3rd Southern African Solar Energy Conference, South Africa, 11-13 May, 2015.Integrating variable generation sources such as utility-scale
photovoltaic (PV) plants into the electric grid is desirable with
the increasing quest for cleaner sources of electric power
generation and reducing cost of utility-scale PV. As a result,
solar market in the United States has more than doubled over
the past two to three years, but looking ahead, systemic
challenges to growth loom both in the near term. Real-time grid
operators are especially concerned about large-scale PV
systems operating under cloudy conditions and large
disturbances. This paper provides an overview of the
computational and optimization research carried out at the
Real-Time Power and Intelligent Systems Laboratory to
address some of the grid operational concerns with high levels
of PV penetrations.dc201
Anti-Relapse Efficacy of Transdermal Primaquine Against Plasmodium Cynomolgi B in Rhesus Monkeys
Transdermal administration of primaquine has been found to produce radical cure against sporozoite induced Plasmodium cynomolgi B infection in rhesus monkeys. Formulation containing 7mg/kg primaquine (base) was curative in 12 out of 13 rhesus monkeys as no relapse occurred during the observation period of 100 days
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Reframing physically active learning as movement-centred pedagogy: a European priority action framework
YesPhysically active learning (PAL) has emerged as a promising way of eliciting health and education-based outcomes for pupils. Concurrently, research suggests large variability in how PAL is perceived, operationalized, and prioritized in practice across Europe. Therefore, this study aimed to co-develop a framework for action to support the adoption and implementation of PAL.
Adopting a design thinking approach, 40 international stakeholders representing 13 countries engaged in an idea generation workshop during a two-day PAL international conference. Participants included professionals from research (n = 20), practice (n = 4) and policy (n = 1) or a combination (n = 15). Their experience with PAL ranged from none to 19 years (with an average of 3.9 years). Participants were allocated into one of six heterogeneous and multidisciplinary groups and led through interactive tasks to identify: the landscape for PAL across Europe, barriers to the adoption and implementation of PAL, and key objectives for research, policy and practice to improve the adoption and implementation of PAL. All discussions were audio recorded and prioritized objectives were transcribed verbatim and analysed using inductive qualitative content analysis.
Five interlinked and mutually reinforcing themes were identified: (1) Integration of the health and education paradigms (2) Coherent national policy and decision making (3) Building confident and competent teachers (4) Adopting a whole school approach for PAL (5) Strengthening the evidence base for PAL.
The priority action framework identifies five key areas for action to facilitate PAL adoption and implementation across Europe. Central to the success of border uptake of PAL is the integration of the health and education paradigms. To achieve this aim, reframing PAL as movement-centered pedagogy would provide a more holistic and inclusive perspective.The authors of this manuscript were supported and funded by the European Union ERASMUS + Strategic Partnership Fund as part of the Activating Classroom Teachers project, ACTivate (Grant no 2019-1-N001-KA203-063024)
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