9,195 research outputs found

    The relation between Hardy's non-locality and violation of Bell inequality

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    We give a analytic quantitative relation between Hardy's non-locality and Bell operator. We find that Hardy's non-locality is a sufficient condition for violation of Bell inequality, the upper bound of Hardy's non-locality allowed by information causality just correspond to Tsirelson bound of Bell inequality, and the upper bound of Hardy's non-locality allowed by the principle of no-signaling just correspond to the algebraic maximum of Bell operator. Then we study the Cabello's argument of Hardy's non-locality (a generalization of Hardy's argument) and find a similar relation between it and violation of Bell inequality. Finally, we give a simple derivation of the bound of Hardy's non-locality under the constraint of information causality with the aid of above derived relation between Hardy's non-locality and Bell operator, this bound is the main result of a recent work of Ahanj \emph{et al.} [Phys. Rev. A {\bf81}, 032103(2010)].Comment: 4 pages, no figure, minor chang

    Nitrogen release kinetics of organic nutrient sources in two benchmark soils of Indo-Gangetic plains

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    An understanding of the mineralization process of organic amendments in soil is required to synchronize N release with crop demand and protect the environment from excess N accumulation. Therefore, we conducted a laboratory incubation experiment to assess nitrogen mineralization potential of crop residues (rice and wheat straw) and organic manures (poultry manure, farmyard manure, cowpea and sesbania) in two benchmark soils (Typic Haplustept and Typic Ustifluvents) of semi-arid region of Punjab, India, varying in textureat field capacity moisture level at a constant temperature of 331°C. Mineralization was faster during first 7 days of incubation in Typic Haplustept and upto 14 days in Typic Ustifluvents which subsequently declined over time. In both soils, net N mineralization continued to increase with increasing period of incubation (expect with crop residues) and was significantly higher in Typic Ustifluvents (54-231µg g-1) than Typic Haplustept (33-203 µg g-1). Compared to unamended soils, percent N mineralized was highest is sesbania (35-40 %) followed by cowpea (32-37 %) and least in wheat (10-11 %) after 42 days of incubation. Thus, sesbania and cowpea may preferably be used to meetthe large N demand during early period of plant growth. Further, mineralization rate constants (k) also indicated that availability of mineral N was significantly higher with application of organic amendments than unamended control treatments in both soils. Therefore, it may be concluded that considerable economy in the use of inorganic N fertilizer can be employed if N mineralization potential of organic inputs is taken into consideration

    Biological activities of a new compound isolated from the aerial parts of Vitex agnus castus L.

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    A new compound trivially named vitexcarpan was isolated from the ethyl acetate fraction of Vitex agnus castus. The structure of compound was elucidated with the help of spectroscopic techniques: 13C NMR, 1H NMR, heteronuclear multiple bond correlation (HMBC), heteronuclear multiple quantum coherence (HMQC), nuclear overhauser effect spectroscopy (NOESY) and correlation spectroscopy (COSY). The isolated compound was screened for possible urease, chymotrypsin and anti-inflammatory activities. The results showed that the compound possess moderate inhibitory activity against urease (43.3 %) and chymotrypsin (39.8 %) enzymes. Vitexcarpan also showed moderate (48 %) in vitro antiinflammatory activity using activated human neutrophils.Keywords: Vitex agnus castus, vitexcarpan urease, chymotrypsin, anti-inflammator

    Is radial head resection a menace for the clinical outcomes of the elbow for comminuted radial head fractures?

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    Background: Radial head fractures are about 20% of all the elbow fractures. Comminuted radial head fractures can cause great impairment on upper extremity functional status. In older times, radial head resection was the treatment of choice for comminuted radial head fractures. Recently, radial head implant arthroplasty has become popular for fractures that could not be fixed. In this study, we assess the clinical outcomes in patients who underwent Radial head resection in Indian population of the productive age group.Methods: Prospective study of 15 patients of age more than 18 and less than 50 years of age, who have underwent radial head resection for Mason type III radial head fractures. Outcomes were evaluated according to the Mayo Elbow Performance Score at 3 months, 6 months and at 1 year follow up.Results: We observed that 80% of our patients were pain free at the end of 1 year and 20% had minimal to moderate pain. About 80% of our patients regained their “functional range” of movements. 12 of our patients had a stable elbow joint and only 3 patients complained of minimal to moderate instability after the procedure. 87% of our patients had a good to excellent functional outcome at the end. The mean Mayo elbow performance score was 92.3 which is graded as excellent and did not have any significant complications to hinder the clinical outcome.Conclusions: Radial head resection yields a good to excellent clinical results in young Indian population with isolated comminuted radial head fractures

    Distortion Analysis of CMOS Based Analog Circuits

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    The amplifiers are the vital part of the analog circuit designs. The linearity of the CMOS is of most important concern in the design of many analog circuits. There are several aspects regarding nonlinear distortion analysis in analog circuits implemented in CMOS technology. Basically, the investigations visualize the nature of the total harmonic distortion (THD) dependence on the amplitude and frequency of the input signals. In this paper, the basic building blocks of analog integrated circuits such as Common source amplifier with diode connected load and Differential amplifier with current mirror load have been presented for distortion analysis. The MOSFET model used for simulation is BSIM3 SPICE model from 0.13-μm and BSIM4 SPICE model from 22-μm CMOS process technology. HSPICE circuit simulator tool is used for distortion analysis of CMOS circuits. It is evident that the above function gives remarkable insight of the nonlinear behavior of the considered circuits and it is worth considering for further investigations

    Analyzing the Efficacy of Organic and Inorganic Sources of Nitrogen and Phosphorus on Growth of Ashwagandha (Withania somnifera Dunal.)

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    Ashwagandha (Withania somnifera Dunal.) is an important medicinal plant whose roots are prescribed as medicine for several disorders of females, bronchitis, dropsy, stomach problems, lung inflammation, tuberculosis, arthritis, skin diseases and male impotency. The present experiment was designed to work out a suitable dose of organic manures and fertilizers for ashwagandha. Treatments consisted of nitrogenous (N) and phosphatic (P) fertilizers at 20 kg ha-1 and 40 kg ha-1 each, and two levels of farm yard manure (FYM) and vermicompost and combinations thereof, along with control. The treatments were replicated thrice in Randomized Block Design. Results revealed that application of 40 kg ha-1 of N and P each as urea and SSP + 2.5 t ha-1 vermicompost registered significant values for plant height, number of branches per plant, leaf area, yield attributing traits, root (8.60 q ha-1) and seed yield (85.6 kg ha-1) as well as soil physical properties like organic carbon, hydraulic conductivity and water retention at 33 and 1500kpa besides the highest B:C ratio (2.57)

    Parasiticidal, antifungal and antibacterial activities of Onosma griffithii Vatke

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    Onosma griffithii was screened for possible pharmacological activities. The crude methanolic extract (MeOH) and its fractions demonstrated parasiticidal activity (IC 50 (ìg/ml ± S.D) = 31.03 ± 0.23) against Leishmania major. Based on the IC 50 values, the potency of the standard drug (Pentamidine) and test fractions were of the order as: Pentamidine > crude extract > n-hexane fraction > ethyl acetate (ETOAc) fraction > chloroform fraction (CHCl3) fraction > n-butanol (BUOH) fraction > aqueous fraction. Similarlymoderate antifungal activity was displayed by the crude methanolic extract against Aspergillus flavus and Fusarium solani. Against the Staphylococcus aureus, the aqueous fraction demonstrated moderate antibacterial activity

    Gadanki radar observations of daytime E region echoes and structures extending down to 87 km

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    Observations of daytime E region echoes extending to altitudes as low as 87 km made using the Gadanki MST radar are presented. The echoing regions display descending layer resembling the characteristics of tidal winds and show structures with periods 2–4 min having both positive and negative slopes. At the center of the layer where strongest SNR is observed, the velocity is maximum and spectral width is minimum. At altitudes slightly above and below, where SNR is relatively low, velocity is low but spectral width is maximum. Daytime observations of echoes extending to such a low altitude and associated structures akin to nighttime quasi-periodic echoes throughout the observational period are the most significant results, not reported earlier from Gadanki and other locations. Other notable results are large SNR (as high as 15 dB) and spectral width (as high as 70 m/s) at the bottommost altitudes, where collisional damping of the plasma waves is significan

    Genetic diversity studies of cumin (Cuminun cyminum L.) genotypes in western plains of Rajasthan

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    Genetic diversity was studied on fifty-four genotypes of cumin, Cuminum cyminum L. at “Agricultural Research Station, Mandor, Jodhpur” during rabi season 2017-18. The mean squares were found significantly different for all the characters under study, depicting the availability of variability among the study materials. The high magnitude of phenotypic coefficient of variance (PCV) and genotypic coefficient of variance (GCV) for seed yield, primary branches per plant and number of umbels per plant depicted the presence of vast amount of variation for the character along with high heritability (68-97%) combined with higher genetic advances as percentage of means for seed yield. The highest intra-cluster distance was recorded in cluster VI (11.8) along with cluster VII (11.33) and cluster VIII (8.29) depicting large genetic variability among the genotypes of these three clusters. The highest inter-cluster distance was reported among cluster III and VIII (51.97) followed by cluster III and VII (40.07) and cluster IV and cluster VIII (34.77), suggesting wide range of diversity between genotypes of the clusters. Amongst the characters, seed yield contributed the highest towards genetic divergence (47.80%) followed by number of umbel per plant (25.65%), branches per plant (8.60%) and 1000 seed weight (6.64%)
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