1,071 research outputs found

    Anatomy of a Spin: The Information-Theoretic Structure of Classical Spin Systems

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    Collective organization in matter plays a significant role in its expressed physical properties. Typically, it is detected via an order parameter, appropriately defined for each given system's observed emergent patterns. Recent developments in information theory, however, suggest quantifying collective organization in a system- and phenomenon-agnostic way: decompose the system's thermodynamic entropy density into a localized entropy, that solely contained in the dynamics at a single location, and a bound entropy, that stored in space as domains, clusters, excitations, or other emergent structures. We compute this decomposition and related quantities explicitly for the nearest-neighbor Ising model on the 1D chain, the Bethe lattice with coordination number k=3, and the 2D square lattice, illustrating its generality and the functional insights it gives near and away from phase transitions. In particular, we consider the roles that different spin motifs play (in cluster bulk, cluster edges, and the like) and how these affect the dependencies between spins.Comment: 12 pages, 8 figures; http://csc.ucdavis.edu/~cmg/compmech/pubs/ising_bmu.ht

    Some derivations among Logarithmic Space Bounded Counting Classes

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    In this paper we show derivations among logarithmic space bounded counting classes based on closure properties of #L\#L that leads us to the result that NL=C=LPLNL=C_=L\subseteq PL.Comment: 3 page

    Preliminary studies on nannoplankton productivity

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    The contribution of the nannoplankton to the total productivity was studied for nine months in coastal waters of Cochin. On an average, - nannoplankton accounted for 66.40% of the observed productivity. The mean assimiIation ratios between the total algal and nannoplankton fraction were very low (1.29 and 0.94 respectively)

    Teleophthalmology: A Model for Eye Care Delivery in Rural and Underserved Areas of India

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    Objectives. To describe the application of teleophthalmology in rural and underserved areas of India. Study Design. This paper describes the major teleophthalmology projects in India and its benefits. Results. Teleophthalmology is the use of telecommunication for electronic transfer of health-related data from rural and underserved areas of India to specialities in urban cities. The MDRF/WDF Rural Diabetes Project has proved to be very beneficial for improvement of quality health care in Tamilnadu and can be replicated at the national level. This community outreach programme using telemedicine facilities has increased awareness of eye diseases, improved access to specialized health care, helped in local community empowerment, and provided employment opportunities. Early detection of sight threatening disorders by teleophthalmology and prompt treatment can help decrease visual impairment. Conclusion. Teleophthalmology can be a very effective model for improving eye care delivery system in rural and underserved areas of India

    AflaB2® and osteoarthritis: a multicentric, observational, post-marketing surveillance study in Indian patients suffering from knee osteoarthritis

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    Background: Osteoarthritis (OA) is one of the most debilitating chronic degenerative joint disorder characterized by pain, inflammation and stiffness of joints with wear and tear of the cartilage. Recent evidences suggest the involvement of the immune pathway in OA development. This study was conducted to evaluate the efficacy and safety of AflaB2® capsules containing Aflapin® and native collagen type II in knee OA patients.Methods: Total 40 knee OA subjects were enrolled at the out-patient department (OPD) of three different sites under supervision of physicians as per the inclusion and exclusion criteria of the study. Subjects were instructed to consume AflaB2® capsules once daily orally for three months. They were informed to visit the respective study center as per the schedule visits to assess and record the efficacy and safety.Results: AflaB2® treatment showed significant reduction in pain and stiffness with improvement in physical functions compared to the baseline. The reduction in pain score was observed from 2nd visit on visual analogue scale (VAS). The VAS score was reduced to 1.63±1.23 (p<0.001) from its baseline score 6.0±1.04 at the end of the treatment. The WOMAC Total Score was reduced to 18.1±6.04 (p<0.001) from its baseline score 74.4±8.07 at the end of the treatment. The improvement was observed in WOMAC pain, stiffness and physical functions score. No significant side-effect was reported with AflaB2® treatment throughout the study.Conclusions: The present study provides the evidence in support of the potential efficacy and excellent tolerability of oral intake of AflaB2® capsules in reducing OA symptoms

    PRELIMINARY IN VIVO EVALUATION OF ANTI-INFLAMMATORY ACTIVITIES OF VARIOUS SOLVENT EXTRACTS OF CADABA INDICA LAM ON CARRAGEENAN-INDUCED PAW EDEMA IN SWISS ALBINO RATS

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    ABSTRACTObjective: Among the invention of novel anti-inflammatory agents from modern research and drug development, the natural sources exist asevergreen to produce potential secondary metabolites that possess multiple efficacy against inflammatory mediators with no adverse reactions.Methods: Accordingly, Cadaba indica lam (Capparidaceae) produced the positive results for phenol, flavonoids, steroid, and saponins in preliminaryphytochemical screening and exhibited the potent anti-inflammatory activity (100 mg/kg, 200 mg/kg) by methanolic leaf extract against carrageenaninducedpawedemausing ratsindose-dependentmanner stayedcloser toreferencestandardindomethacin (25mg/kg)comparedtopetroleumetherandaqueous extract.Results: Thus, the plant C. indica lam might be considered to posses potential secondary metabolites against inflammatory agents and act as lead toisolation of novel therapeutic compounds.Conclusion: The phytochemical test indicates the presence of phenol, flavonoids, steroid, and saponins in leaf extract of C. indica may be known topossess anti-inflammatory property. The result of anti-inflammatory activity produced by the methanolic extract was threshold of isolation of biomolecules from the natural sources in diverse drug development in the near future being responsible for the pharmaceutical industries.Keywords: Preliminary phytochemical, Cadaba indica, Anti-inflammatory

    Stock assessment of the Indian oil-sardinella (Sardinella longiceps) off the West Coast of India

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    The Indian oil-sardinella (Sardinella longiceps Val .) has traditionally played a critical role in the marine fishery economics of India, and in particular in the State of Kerala. It's production on the west coast of India exhibits large fluctuations over the years, though it continues to be commercially the most important and abundant pelagic resource (Table 1). These fluctuations have attracted the attention of many research workers. As early as 1910 Hornell attributed them to changes in diatom production or food availability to the fry and the prevalence of favourable hydrological conditions. Kesteven (1967) was of the view that the fluctuations are related to shifts in the migratory path of the fish, causing variations in the accessibility of the stocks to fishing due to the limited range of the fishing operations

    Automatic Lighting Mechanism on Highways during Midnight

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    This paper presents the key points in implementing automatic lighting mechanism on highway roads with the help of moving object detection in urban cities during midnight. The objective of the object detection system will be to detect objects confined in a particular area. The detection system will thus require important information like speed of moving objects, size of objects and number of vehicles on the road. The lighting system is responsible for switching off the lights in a particular area where the object detection monitoring system evaluates to a minimum threshold value. The lighting system will be active 350m to direction of the object moving in a particular direction

    Outcome analysis of surgically managed unstable burst fracture

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    Background:Burst fractures are common injuries of dorsolumbar spine. In indicated cases, surgery is the treatment of choice. Significant controversy exists regarding surgical intervention for these fractures. Posterior decompression, anterior decompression and instrumentation, and combined anterior decompression and posterior instrumentation have been recommended in various studies. Here we are going to evaluate unstable burst fractures of thoracic and lumbar spine treated by isolated anterior decompression and instrumented fusion with TSM-Bone graft composite.Methods: Prospective study of thirty-six cases of unstable fracture of thoracic and lumbar spine treated in Sri Ramachandra Medical centre from January 2011 to January 2014. The inclusion criteria were burst fractures of thoracic or lumbar spine complete or incomplete neurological deficit and burst fractures of thoracic or lumbar spine without neurological deficit but with mechanical instability. The exclusion criteria were pathological fractures, chance fracture, stable burst, wedge compression and osteoporotic compression fractures. The results were analyzed during the follow-up using the Pain – Visual analogue scale, Fusion status and radiographic parameter – K-angle .For pain score were given as 3,2,1 for absent, moderate and severe pain respectively. Regarding fusion status score of 3,2,1 were given when fusion was good, fair and no sign of fusion respectively.Results:Mean pre-operative K-angle was 28o. Average loss of correction at final follow up was 3o.Mean correction of K-angle was 140.Moderate to severe loss of correction of K- angle was observed in 4 patients. Mild to moderate pain in 5 patients treated with analgesics. Average TSM subsidence was 3mm.Conclusions:Bone graft composite provides stable biomechanical support to deficient anterior column in burst fractures and allows early rehabilitation and mobilization. Neural recovery may occur after anterior decompression, stabilization and fusion with TSM-Bone graft composite in dorsolumbar burst fractures with incomplete cord injury

    Carbon Nanotubes: Detection of Chemical and Biological Warfare Agents

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    Discovery of carbon nanotubes has great impact on the development of newer methodologies and devicesuseful for the analysis of various types of chemicals. The functionalisation of CNTs with biomolecules relatedto chemical and biological warfare agents makes these useful for the detection of these agents. The detectionsensitivity can be increased manyfold. Various types of chemical and biological sensors were developed usingvarious type of carbon nanotubes as well as nano particles of different metals.Defence Science Journal, 2008, 58(5), pp.617-625, DOI:http://dx.doi.org/10.14429/dsj.58.168
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