39 research outputs found

    Hole burning in a nanomechanical resonator coupled to a Cooper pair box

    Full text link
    We propose a scheme to create holes in the statistical distribution of excitations of a nanomechanical resonator. It employs a controllable coupling between this system and a Cooper pair box. The success probability and the fidelity are calculated and compared with those obtained in the atom-field system via distinct schemes. As an application we show how to use the hole-burning scheme to prepare (low excited) Fock states.Comment: 7 pages, 10 figure

    Brazilian Consensus on Photoprotection

    Full text link

    Effectiveness of Hepar Sulphuricum as a Remedy in treating Allergic Rhinitis of patients near Sea Shore Areas in Colachel Village

    No full text
    BACKGROUND: Allergic rhinitis is the inflammation of the mucous membranes of the nose, eyes, Eustachian tubes, middle ear, sinuses, and pharynx. It is an extremely common condition, affecting approximately 20% of the population. While allergic rhinitis is not a life threatening condition, complications can occur and the condition can significantly impair quality of life. The study reviews the effectiveness of Hepar Sulphuricum in the management of allergic rhinitis. METHODS: Thirty patients with allergic rhinitis near sea shore areas from Colachel Rural health Centre who treated with Hepar Sulphuricum were evaluated. Diagnosis was done according to the symptoms presentation. All the cases were followed up in every month. The post treatment intensity scores were compared with pre- treatment intensity scores, from this scores were then analysed statistically with‘t’ test. RESULTS: Among the 30 cases, 24 cases shown marked improvement, 4 cases shown moderate improvement, 2 cases having mild improvement. Out of 30 cases 70% were Females and 30% were Male participants. 26% of the study group was between (11-20) and (41-50) years of age. Participants are mostly housewives and students. CONCLUSION: The results of this study is highly satisfying and confirmed that it is Effective for the Allergic Rhinitis of patients near sea shore areas of Colachel Village treating with Medicine Hepar Sulphuris Calcareum

    High Performance Trays and Heat Exchangers in Heat Pumped Distillation Columns

    No full text
    Vapor recompression of distillation columns overheads, followed by subsequent condensation in the reboiler results in substantial operating cost savings compared to conventional steam driven reboiler systems. The use of high performance heat exchangers and distillation trays permits additional energy savings by lower reboiler temperature differences, and reduced reflux requirements for a fixed column height, due to closer tray spacings. This paper surveys the heat pump systems currently in operation using high performance UCC MD trays and High Flux tubing. Design considerations for high or low pressure level towers, with single or dual stage compression equipment are discussed, along with the various control methods. Factors affecting startup, part load, and off design operation of the equipment are also reviewed

    HOST- GUEST INTERACTION OF 3-(4-CHLOROPHENYL)-1-CYCLOPROPYL-2-(2-FLUOROPHENYL)-5-(4-FLUOROPHENYL) PENTANE-1, 5-DIONE: Β-CYCLODEXTRIN INCLUSION COMPLEX

    No full text
    The inclusion complex of 3-(4-chlorophenyl)-1-cyclopropyl-2-(2-fluorophenyl)-5-(4-fluorophenyl) pentane-1, 5-dione (CFPD) and ÎČ-Cyclodextrin (ÎČ-CD) has been investigated using UV and fluorescence spectroscopic techniques. The binding constant and 1:1 stoichiometry of the inclusion complex were determined using Benesi- Hildebrand plots. 1:1 stoichiometry for CFPD: ÎČ-CD has been confirmed by Job’s plot. The thermodynamic parameter (ΔG) of inclusion process was determined. The formation of the inclusion complex between CFPD and ÎČ-CD, was further confirmed by molecular docking studies are in good relationship with the results obtained through experimental methods

    Radar Waveform Optimization for Joint Radar Communications Performance

    No full text
    We develop and present a radar waveform design method that optimizes the spectral shape of the radar waveform so that joint performance of a cooperative radar communications system is maximized. The continuous water-filling (WF) spectral-mask shaping method presented in this paper is based on the previously derived spectral-mask shaping technique. However, the method presented in this paper is modified to utilize the continuous spectral water-filling algorithm to improve communications performance. We also introduce additional practical system constraints on the autocorrelation peak side-lobe-to-main-lobe ratio and radar waveform spectral leakage. Finally, we perform a numerical study to compare the performance of the continuous WF spectral-mask-shaping method with the previously derived method. The global estimation rate, which also accounts for non-local estimation errors, and the data rate capture radar and communications performance respectively

    The effects of Poly(ethylene glycol) on the Solution Structure of Human Serum Albumin,

    No full text
    Protein physical and chemical properties can be altered by polymer interaction. The presence of several high affinity binding sites on human serum albumin (HSA) makes it a possible target for many organic and polymer molecules. This study was designed to examine the interaction of HSA with poly(ethylene glycol) (PEG) in aqueous solution at physiological conditions. Fourier transform infrared, ultraviolet‐visible, and CD spectroscopic methods were used to determine the polymer binding mode, the binding constant, and the effects of polymer complexation on protein secondary structure. The spectroscopic results showed that PEG is located along the polypeptide chains through H‐bonding interactions with an overall affinity constant of K = 4.12 × 105M-1. The protein secondary structure showed no alterations at low PEG concentration (0.1 mM), whereas at high polymer content (1 mM), a reduction of α‐helix from 59 (free HSA) to 53% and an increase of ÎČ‐turn from 11 (free HSA) to 22% occurred in the PEG-HSA complexes (infrared data). The CDSSTR program (CD data) also showed no major alterations of the protein secondary structure at low PEG concentrations (0.1 and 0.5 mM), while at high polymer content (1 mM), a major reduction of α‐helix from 69 (free HSA) to 58% and an increase of ÎČ‐turn from 7 (free HSA) to 18% was observed
    corecore