71 research outputs found

    Large Matter Effects in νμντ{{\nu_\mu \to \nu_\tau}} Oscillations

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    We show that matter effects change the νμντ{\rm {\nu_\mu \to \nu_\tau}} oscillation probability by as much as 70% for certain ranges of energies and pathlengths. Consequently, the νμνμ{\rm {\nu_\mu \to \nu_\mu}} survival probability also undergoes large changes. A proper understanding of νμ\nu_\mu survival rates must consider matter effects in PμτP_{\mu \tau} as well as PμeP_{\mu e}. We comment on a) how these matter effects may be observed and the sign of Δ31\Delta_{31} determined in atmospheric neutrino measurements and at neutrino factories and b) how they lead to heightened sensitivity for small θ13\theta_{13}.Comment: Version to appear in Phys. Rev. Let

    Efficacy of essential oils against Varroa destructor infesting Apis mellifera Linn. colonies and their impact on brood development

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    Varroa destructor is a dangerous pest directly for beekeeping and indirectly for crops that require insect pollination. The present investigation has been carried out to study the efficacy and persistence of some essential oils and formic acid against Varroa mite in colonies of Apis mellifera Linn. at Pantnagar, Uttarakhand. The results revealed that highest mite mortality (77.54 %) with highest brood development (21.74 % increase) recorded in garlic oil followed by turmeric oil (75.84 %) with 15.39 per cent increases in brood development. The hives treated withT1(tulsi oil), T3 (turmeric oil), T4 (ajwin oil), T5 (cinnamon oil), T5 (clove oil) and T7 (formic acid) also showed good persistence with mite mortality ranging from 66.54 to 77.54 % and brood development -3.12 to 21.74 per cent increase after 3 weeks exposure of the treatments

    Impact of Advance Care Planning and End-of-Life Conversations on Cancer Patients: An Integrative Literature Review

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    Poonam Goswami pictured. Investigational Cancer Therapeuticshttps://openworks.mdanderson.org/aprn-week-22/1009/thumbnail.jp

    Exploration of various flours as pollen substitutes for Apis mellifera L. during Dearth period at Tarai region of Uttarakhand, India

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    Studies on evaluation of various flours as pollen substitutes and availability of pollen resources for Apis mellifera honey bees were conducted at Govind Ballabh Pant University of Agriculture & Technology, Pantnagar, India during 2010. Four flours were taken viz. Soybean, Maize, Wheat and Gram as pollen substitutes for A. mellifera. All the flours were mixed with honey and water to make a total of 4 treatments (4 flours + honey + water). Treatment T1 (Soybean flour + honey + water) were found to be best in reference to visitation of bees with a mean number of 32.59 honey bee foragers /5min/day and weight loss in flours was 19.12 g due to foraging by bees followed by the treatment T3 (Maize flour + honey + water) and T2 (Wheat flour + honey + water) were found 29.30 and 23.05, respectively. Gram flour + honey + water (T4) combination were found to be least preferred pollen substitute for A. mellifera (19.76 honey bee foragers/5min/day) with a weight loss 6.66 g. The overall study has great significance for bee keepers. The use of pollen substitute is important for growth and development of the bee colonies not only in dearth periods but also at other times (during foraging, pollination process and to overcome pesticide exposures.). From the present findings it can be concluded that although bees have accepted and grew on all the diets

    Mass Hierarchy Determination via future Atmospheric Neutrino Detectors

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    We study the problem of determination of the sign of Delta m^2_{31}, or the neutrino mass hierarchy, through observations of atmospheric neutrinos in future detectors. We consider two proposed detector types : (a) Megaton sized water Cerenkov detectors, which can measure the survival rates of nu_\mu + \bar{\nu}_\mu and nu_e + \bar{\nu}_e and (b) 100 kton sized magnetized iron detectors, which can measure the survival rates of \nu_\mu and \bar{\nu}_\mu. For energies and path-lengths relevant to atmospheric neutrinos, these rates obtain significant matter contributions from P_{\mu e}, P_{\mu \mu} and P_{ee}, leading to an appreciable sensitivity to the hierarchy. We do a binned \chi^2 analysis of simulated data in these two types of detectors which includes the effect of smearing in neutrino energy and direction and incorporates detector efficiencies and relevant statistical, theoretical and systematic errors. We also marginalize the \chi^2 over the allowed ranges of neutrino parameters in order to accurately account for their uncertainties. Finally, we compare the performance of both types of detectors vis a vis the hierarchy determination.Comment: 36 pages, 13 figures, revised version accepted in Physical Review

    Diversity of floral insect visitors of mango during blooming period at Pantnagar

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    A total of 20 insect species were observed visiting on mango flowers belonging to eight species of the order Diptera, seven species of Hymenoptera, three species of Lepidoptera, one species of Hemiptera and one species of Coleoptera. The Dipterans constituted major group of insects visiting on mango flowers. Among the dipterans, syrphids (Family: Syrphidae; subfamilies: Syrphinae and Eristalinae) were observed the most frequent visitors, constituted (44.67%) the major group of visitors. The syrphids species included Episyrphus balteatus DeGeer, Melanostoma orientale Weid, Syrphus corollae Fab. and Eristalis tenax L. Of these, E. balteatus exhibited marked higher incidence on mango and as compared to other syrphids. Besides syrphids, other dipterans, viz. Musca domestica belonging to the family Muscidae and subfamily Muscinae, were also observed as the occasional visitors (0.50 per cent) on mango flowers. The Hymenopterans were monitored as second major group of insects found visiting on mango flowers. Of these, the family Apidae and subfamily Apinae contributed 40.95% and represented by three main species of thegenus Apis, viz. A. dorsata Fab., A. mellifera L., and A. cerana indica Fab. Among the non apis bees of family Melliponae: Melliponinae (Tetragonula laeviceps) and Xylocopidae: Xylocopinae (Xylocopa aestuans L.) were observed to constituted 9.10 per cent and 2.07 per cent respectively. In addition to this some Hemipterans, Lepidopterans and Coleopterans were also found on mango inflorescence that contributed 0.17, 0.20 and 0.42 per cent, respectively

    THE POSITIVE EFFECTS OF PRATIMARSHA NASYA W.S.R. TO SLEEP PHYSIOLOGY

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    Study was planned to preventively deal with sleep disturbances which are waiting to become public health problem. As much as 30% individuals among apparently healthy individuals in India suffer from occasional insomnia. Ayurveda classics offered a solution by use of Pratimarsha Nasya as daily regimen to improve sleep quality. Anu taila is best used for Nasya Karma, so was chosen as medicine for this clinical observational study. Material and methods- 28 subjects were selected randomly and every evening two drops Anu taila in each nostril was administered for 3 months. Result- Significant improvement was found on PSQI, ESS sleepiness scale as well as self developed Sukhnidra Sukhprabodham scale. For self developed sleep quality assessment scale, null scores were present in the enrolled subjects with Baseline mean + SD 0.00 + 0.00 and gradual increase across subsequent intervals. Mean + SD after Trial is 14.54 +1.97. So subjects showed significant response to Pratimarsha nasya with p value <0.0001 and Z value 4.647. Conclusion- Overall sleep quality is more improved after administration of pratimarsha nasya, different components of sleep quality considered viz. getting to sleep, quality of sleep, awake following sleep, behaviour following wakening all are positively changed. Pratimarsha nasya has such a vast positive effect on physiology of sleep that it deserves to be incorporated in daily regimen and can be called as “two drops for well-being of Urdhvajatru”

    Neutrino mass hierarchy determination via atmospheric neutrinos with future detectors

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    The issue of determining the neutrino mass hierarchy is one of the outstanding questions in neutrino physics. We consider the potential of hierarchy determination using atmospheric neutrinos as the source in three different proposed future detectors: A large Iron Calorimeter detector, a megaton Water Cerenkov detector and a large-mass Liquid Argon detector. If the mixing angle θ13 is about 10° (close to CHOOZ upper bound), the hierarchy sensitivity is essentially determined by resonant matter effects. To maximize the potential of these effects in atmospheric neutrinos, charge discrimination capability in the detector is desirable. Hence, detectors with this capability have an advantage in hierarchy determination. We compare and contrast the performance of the above three detectors in this respect. We perform a realistic analysis of the above future detectors for atmospheric neutrinos and show that it is possible to achieve a significant hierarchy sensitivity if the detector characteristics are favourable

    ADOPTING INNOVATIVE METHOD AND COMPARATIVE EVALUATION OF SWETHA PARPATI MENTIONED IN AYURVEDIC LITERATURE

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    In Ayurveda, the study of the therapeutic uses and effects of drugs means Pharmaco-therapeutic is described under the branch of Rasashastra which mainly incorporates inorganic, herbo-mineral and metallic pharmaceutical preparations namely Khalviya Rasayana, Parpati Rasayana, Pottali Rasayana and Kupipakwa Rasayana. This article aims for the comparative assessment of Swethaparpati coming under Parpatikalpa mentioned as per reference of Sidhayogasangraha, AFI with another reference of Rasodharatantra. According to the first two references the ingredients used for the preparation are Suryakshara, Sphatika and Navasadara and as per the third reference ingredients like Tankana and Karpura are added. Here a detailed review of literature has been collected regarding the potential of the above mentioned individual ingredients along with the recent research updates regarding individual ingredients used in the production of Swetha Parpati according to both the references it also incorporate research updates on the formulation Swetha Parpati. This article also aims pharmaceutical standardization of standard method adopted in process of production of Swethaparpati with the alteration made from the usual method adopted in preparation of Parpati Kalpana that will help for developing new improved SOP regarding the formulation. This paper also aims in projecting the improved therapeutic value which could be generated by addition of new ingredients mentioned as per reference of Rasodharatantra
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