217 research outputs found
A Critical Review on Tamaka Shwasa (Bronchial Asthma) - An Ayurvedic View
Difficulty in breathing or shortness of breath may be simply termed as Shwasa (Asthma), As per Ayurveda, Shwasa is mainly caused by the Vata and Kapha Doshas. Shwasa is broadly classified into five types in Maha Shwasa (Dyspnoea major), Urdhawa Shwasa (Expiratory Dyspnoea), Chinna Shwasa (Chyne-stroke respiration), Kshudra Shwasa (Dyspnoea minor), Tamaka Shwasa (Bronchial Asthma). In modern science Tamaka Shwasa can be correlated with Asthma, Asthma which is a chronic inflammatory disease of airway. In modern medicine there is no cure for Asthma, symptoms can typically be improved. In Ayurveda, Asthma can be effectively and safely manage the condition without inducing any drug dependency where Pachakarma procedures and use of internal medication detoxifies the body, provides nutrition and increases the elasticity of lung tissue it also develops natural immunity of the body thus decreasing episodic recurrence of the disease
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REGTRAN and MICRO, the implementation of two digital system simulators
REGTRAN (REGister TRANsfer), a hardware description
language and SYSSIM (SYStems SIMulation), a simulator for the
system described by REGTRAN were originally developed by Edward
Pett, Jr [33] at the University of Texas at Austin. These two programs
are successfully used to simulate many digital systems of
complex nature. It is the primary purpose of this paper to describe
the implementation of these two programs for KRONOS at Oregon
State University. In this process, various problems, due to the differences
in the operating systems, were faced. These problems are
discussed in detail and the changes that were made are included.
REGTRAN and SYSSIM are not capable of simulating micro-instructions
or a microprocessor. For this reason, another simulator MICRO is
developed. Detailed description of MICRO and its use as a general
purpose simulator as well as a microprogram simulator are given in detail. As an example, partial emulation of DEC PDP-8 is shown.
Suggestions for the improvement of MICRO, REGTRAN and SYSSIM
are mentioned
N 2-(7-Bromo-9-butyl-9H-carbazol-2-yl)-9,9-diethyl-N 2,N 7,N 7-triphenyl-9H-fluorene-2,7-diamine
In the title molecule, C51H46BrN3, the central fluorene residue is planar (r.m.s. deviation = 0.0203 Å), as is the carbazole system (r.m.s. deviation = 0.0154 Å), and these groups are almost orthogonal [dihedral angle = 79.72 (3)°]. The three-dimensional architecture is consolidated by C—H⋯π interactions. The butyl substituent is disordered with two sites resolved for the terminal propyl atoms; the major component had a site-occupancy factor of 0.686 (3)
Use of CR-39 films for nuclear radiation shielding efficacy evaluation of lining materials for combat vehicles
All materials provide, to a lesser or greater extent, shielding against
nuclear radiations. Armoured fighting vehicles (AFVs) have steel as the structural
material, which appears to be a reasonably good gamma and neutron shield material
but a shield of pure iron would not be equally effective against whole range of
neutron energies as it has a few resonances in electron volt range, and it reduces
energy of fast neutrons to lower energy neutrons. These neutrons will be absorbed
through radiative capture and emit gamma radiations. Thus it is essential that an
effective shield should contain a large amount of moderating material, hydrogen
being preferred with low atomic number materials (B, C, Li) and lead (Pb) to ensure
that the neutrons do not diffuse at intermediate energies in the shield as well as
gamma attenuation will also take place.
In order to have a suitable shield material for armoured vehicles which serves as
neutron and gamma radiation attenuator, polyethylene polymer with fillers lining
materials are preferred. These materials were evaluated against gamma and fast
neutrons using radioactive sources for suitability to fitment into combat vehicle as
per the requirement of protection factor values. The detector for gamma radiation
was used as Nal(Tl) while for neutron, CR-39 film was used.Use of CR-39 films for nuclear radiation shielding efficacy evaluation of lining
materials for combat vehicles
Deepak Gopalani1*, A S Jodha1, M K Das1, R K Singh2 and G L Baheti1
1Defence Laboratory, Jodhpur-342 011, Rajasthan, India
2Defence Material & Store Research & Developement Establishment, Kanpur-208 013,
Uttar Pradesh, India
E-mail : [email protected] Laboratory, Jodhpur-342 011, Rajasthan, India
2Defence Material & Store Research & Developement Establishment, Kanpur-208 013,
Uttar Pradesh, Indi
Production Process Modelling Architecture to Support Improved Cyber-Physical Production Systems
With the proliferation of intelligent networks in industrial environments, manufacturing SME’s have been in a continuous search for integrating and retrofitting existing assets with modern technologies that could provide low-cost solutions for optimizations in their production processes. Their willingness to support a technological evolution is firmly based on the perception that, in the future, better tools will guarantee process control, surveillance and maintenance. For this to happen, the digitalization of valuable and extractable information must be held in a cost-effective manner, through contemporary approaches such as IoT, creating the required fluidity between hardware and software, for implementing Cyber-Physical modules in the manufacturing process. The goal of this work is to develop an architecture that will support companies to digitize their machines and processes through an MDA approach, by modeling their production processes and physical resources, and transforming into an implementation model, using contemporary CPS and IoT concepts, to be continuously improved using forecasting/predictive algorithms and analytics.authorsversionpublishe
Formulation and evaluation of a face serum containing fenugreek extract
Background: Wrinkles on the face and aging of the skin are an undesirable effect of photodamage and ultraviolet radiation. Serum has a quick absorption and ability to penetrate deep layers of the skin, as well as a non-oily finish and a deep formula with a very high amount of active ingredients.
Methods: In this study, we have formulated and evaluated a face serum containing combination of aqueous extract of fenugreek seed and lemon oil.
Results: Facial serum was tested for its pH, physical appearance, viscosity, microbial testing, cyclic temperature test, etc. The results of the stability study show that there was no change in visual acuity, homogeneity.
Conclusions: Serum containing Fenugreek extract have been able to cure bacterial infections and inflammations of facial skin, and other signs also moistens the skin without any side effects making skin soft, smooth and supple
Development of mosquito repellant gel formulations from various natural volatile oils: comparative study with the marketed formulation odomos®
DEET based mosquito repellents were found to be comparatively harmful to the person suffering from urea cycle disorders such as ornithine transcarbamylase (OTD) deficiency and, are therefore, contraindicated in individuals. These situations lead to the budding necessity of natural mosquito repellents which will have inexpensive, effectual, non-toxic, environment-friendly, and biodegradable attributes. Inspired from the upcoming global need, a carbopol 940 based mosquito repellant gel formulation was prepared from the essential oils of Cymbopogon nardus, Murraya Koenigii, Cymbopogon citratus, Tridax procumbens, Eucalyptus globules, and Azadirachta indica, and further evaluating them for their appearance, pH, viscosity, spreadability, extrudability, swelling index, and accelerated studies. The mosquito repellent potential was evaluated and simultaneously compared with the positive control (Odomos®). In several developing nations, where the majority of the people do not have access to mosquito net, high-cost mosquito repellant creams, and miscellaneous physical methods, this gel formulation may be an effective, inexpensive, and easily accessible way to prevent mosquito-borne diseases, like malaria, dengue, etc. in the lower sections of the society.
Keywords: Mosquito, Repellent, Malaria, Gel, Formulation, DEET
Efficiency of Energy Conversion in Thermoelectric Nanojunctions
Using first-principles approaches, this study investigated the efficiency of
energy conversion in nanojunctions, described by the thermoelectric figure of
merit . We obtained the qualitative and quantitative descriptions for the
dependence of on temperatures and lengths. A characteristic temperature:
was observed. When , . When , tends to a saturation value. The dependence of
on the wire length for the metallic atomic chains is opposite to that for
the insulating molecules: for aluminum atomic (conducting) wires, the
saturation value of increases as the length increases; while for
alkanethiol (insulating) chains, the saturation value of decreases as the
length increases. can also be enhanced by choosing low-elasticity bridging
materials or creating poor thermal contacts in nanojunctions. The results of
this study may be of interest to research attempting to increase the efficiency
of energy conversion in nano thermoelectric devices.Comment: 2 figure
Clean synthesis of linear and star amphiphilic poly(ε-caprolactone)-block-poly(ethyl ethylene phosphonate) block copolymers: assessing self-assembly and surface activity
International audienc
Effect of Thermoelectric Cooling in Nanoscale Junctions
We propose a thermoelectric cooling device based on an atomic-sized junction.
Using first-principles approaches, we investigate the working conditions and
the coefficient of performance (COP) of an atomic-scale electronic refrigerator
where the effects of phonon's thermal current and local heating are included.
It is observed that the functioning of the thermoelectric nano-refrigerator is
restricted to a narrow range of driving voltages. Compared with the bulk
thermoelectric system with the overwhelmingly irreversible Joule heating, the
4-Al atomic refrigerator has a higher efficiency than a bulk thermoelectric
refrigerator with the same due to suppressed local heating via the
quasi-ballistic electron transport and small driving voltages. Quantum nature
due to the size minimization offered by atomic-level control of properties
facilitates electron cooling beyond the expectation of the conventional
thermoelectric device theory.Comment: 8 figure
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