Sensitivity and Linearity of Superconducting Radio-Frequency Single-Electron Transistors: Effects of Quantum Charge Fluctuations

We have investigated the effects of quantum fluctuations of quasiparticles on the operation of superconducting radio-frequency single-electron transistors (RF-SETs) for large values of the quasiparticle cotunneling parameter $\alpha=8E_{J}/E_{c}$, where $E_{J}$ and $E_{c}$ are the Josephson and charging energies. We find that for $\alpha>1$, subgap RF-SET operation is still feasible despite quantum fluctuations that renormalize the SET charging energy and wash out quasiparticle tunneling thresholds. Surprisingly, such RF-SETs show linearity and signal-to-noise ratio superior to those obtained when quantum fluctuations are weak, while still demonstrating excellent charge sensitivity.Comment: Submitted to Phys. Rev. Let

Ethnobotanical and Ethnomedicinal Observations in Nirmal Division of Adilabad District, Andhrapradesh, India

In the present work an attempt is made to document the ethnobotanical remedies for various ailments of the ethnic tribes inhabiting the Nirmal division of Adilabad. Andhrapradesh, India. We reported more than 75 ethnomedicinal plants used by the tribal people in alleviating diseases. Our collections of ethno medicinal plant specimens from this area were deposited in the Kakatiya University Herbarium (KUH) Warangal, India

Ethnomedicine Against Jaundice Used by Gond Tribes of Adilabad District, Andhra Pradesh, India

The present investigation was performed in order to enumerate the medicinal plants that gond tribes uses for the treatment of jaundice in Adilabad district, Andhra Pradesh, India. The study revealed that totally 12 plants belonging to 9 families were used to cure jaundice . The plants were used either separately or in combination with some other plant parts.

Ethnomedicinal Uses of Leaf Preparations in Adilabad District, Andhra Pradesh, India

Ethnobotanical surveys were conducted from June, 2008 through May, 2009 in the Adilabad district of Andhra Pradesh, India. Information on 67 angiosperms belonging to 38 families was gathered with regard to their ethnomedicinal use in leaf preparations. This paper reports for the first time the uses of leaf preparations by the tribal people in the form of extracts, decoctions, pastes, etc

Methodology to Measure the Protective Areal Density of Ceramic Tiles Against Projectile Impact

The protective areal density of any armour material is the important property required for armour design. In this study, ballistic performance of hot pressed boron carbide tiles, with a tile thickness of 12.2 mm, was evaluated using the protective areal density (PAD) test method, against hard steel 12.7 mm armour piercing (AP) projectiles. The binary response data on complete penetration/ partial penetration obtained from PAD testing was fitted with the standard logistic regression model. A detailed discussion on statistical procedure has been presented. The PAD (pp = 0.5) was estimated to be 82.5 kg/m2 and the lower and upper bounds of 95 per cent confidence interval for (PAD) (pp = 0.5) was found to lie between 79.5 kg/m2 and 85.0 kg/m2

Armour Protection and Affordable Protection for Futuristic Combat Vehicles

Protection creates a shift in the internal paradigm of the soldier and leads to multiplied psychological stamina for moving fearlessly in the battlefield which generates a major force-multiplier effect. Hence, the mechanized forces are still likely to be one of the dominant forces on the futuristic battlefield and would be the primary target of enemy forces capable of engaging from tank guns up to 4-5 km in a direct fire mode and up to 8-10 km in an indirect fire modes. Increased protection is possible only using advanced armour technology. Throughout the history of warfare, materials technologies have had a significant impact on land-combat force capabilities. Armour materials have progressed through improvements in metallic systems and development of advanced, lightweight (low areal density) composite materials. The advancements in ceramic systems have further improved the performance. Similarly, the advances in development of explosive reactive armour has generated efficient armour system against all contemporary high explosive antitank (HEAT) ammunition and missile threats for armoured vehicles. Yet, to achieve armour performance exceeding that of the current light combat vehicles and main battle tanks for new vehicular systems, weighing significantly less than the present combat vehicles, advances in new armour materials, systems, and survivability technologies are required. This paper describes various approaches and advancements in the metallic, ceramic, and composite armour materials and new dynamic armour systems that are essential to improve the survivability of armoured vehicles in the futurisitic multi-spectral battlefied scenarios.Defence Science Journal, 2011, 61(4), pp.394-402, DOI:http://dx.doi.org/10.14429/dsj.61.36

गुजरात की समुद्री मात्स्यिकी के कुछ पर्याबरणीय संघात

कृपया पूरा लेखा पढ

Does Inner Awareness Always Accompany Outer Awareness During Perception?

In the present paper, we defend the thesis that outer-world-directed perceptual consciousness is always accompanied by an inner awareness (IAOA). This is contrary to the view that outer-world-directed conscious mental states are not accompanied by an inner awareness, which is held by Gennaro (2008) against Kriegel’s (2009a and 2009b) self-representationalism. We attempt to show why philosophers like Gennaro get it wrong when they deny the IAOA thesis by critically examining his arguments against it and by giving arguments in its favour.Ar vidinis žinojimas percepcijos metu visada lydi išorinį žinojimą

Normal and Oblique Impacts of Hard Projectile on Single and Layered Plates-An Experimental Study

The phenomenon of ordnance velocity impact of projectile on single and layered plates is of interest for many applications. In this paper. an experimental study of normal and oblique impacts or an ogive shaped, hard steel projectile on single and layered plates of mild steel and aluminium is presented. The projectiles were fired at an impact velocity of about 820 ms-1. The plate thickness was varied in the range 10 mm to 40 mm and the ratio of plate thickness to the diameter of the projectile varied in the range 1.5 to 13.0. Observations on target damage and measurements of incident and residual velocities for different angles of impact are presented. Plate thickness t*, for which the incident velocity is the ballistic limit, is determined. Computer simulations were carried out using a hydrodynamic code to simulate the normal impact of a projectile and compared these with the experimental results. Experiments were performed to evaluate the response of these plates of intermediate thickness when layered. and the results were compared to the results of single plate of same total thickness