Matterwave Transport Without Transit

Classically it is impossible to have transport without transit, i.e., if the points one, two and three lie sequentially along a path then an object moving from one to three must, at some point in time, be located at two. However, for a quantum particle in a three-well system it is possible to transport the particle between wells one and three such that the probability of finding it at any time in the classically accessible state in well two is negligible. We consider theoretically the analogous scenario for a Bose-Einstein condensate confined within a three well system. In particular, we predict the adiabatic transportation of an interacting Bose-Einstein condensate of 2000 Li atoms from well one to well three without transiting the allowed intermediate region. To an observer of this macroscopic quantum effect it would appear that, over a timescale of the order of one second, the condensate had transported, but not transited, a macroscopic distance of 20 microns between wells one and three.Comment: 6 pages, 4 figure

Community Based Fisheries Management: Institutional Options for Empowering Fisher Communities

This report sheds light on the diversity of approaches adopted by the various project partners, along with lessons learned during the Community Based Fisheries Management Project (CBFM-2). CBFM 2 was the second phase of an action research project designed to establish whether the sustainable management of publicly owned and private water bodies can be carried out by community groups consisting largely of poor fishers. The first phase implemented by the Department of Fisheries, with the assistance of the WorldFish Center and supported by the Ford Foundation, demonstrated that the approach was possible in a limited number of water bodies. The second phase, with assistance from the DFID-UK, involved a much greater range of water bodies (target 120, final number 116) with a range of partners -- the Department of Fisheries (DoF), the implementing NGOs, Banchte Shekha, BRAC, CARITAS, CNRS, CRED, GHARONI, Proshika, SDC, SHISUK, and the specialist NGOs, BELA for legal assistance and FemCom for media communications. A wide range of institutional arrangements have been established under the project. Many of the project documents state that there are three main fisheries management approaches; fisher-led, community-led and women-led. The definitions of the three approaches were: 1. Fisher-led Approach -- Forming groups among the fishers for using each water body and then a committee or organisation representing these groups and taking management decisions in a participatory manner; 2. Community-led Approach -- Participatory approach at the community level. Fishery managed by the community where participatory planning with different stakeholders is followed by forming a water body management committee according to the suggestions of all stakeholder categories; 3. Women-led Approach -- Ensure participatory planning involving the whole community covering all stakeholders, with groups usually formed with women (in some cases, mixed groups with men and women), and the women's group members take a lead in resource management. However these definitions fail to capture the full diversity of approaches adopted by project partners during implementation. By the end of the project, 10 different organisations had been involved in setting up community groups to manage CBFM-2 sites

Episodic excursions of low-mass protostars on the Hertzsprung-Russell diagram

Following our recent work devoted to the effect of accretion on the pre-main-sequence evolution of low-mass stars, we perform a detailed analysis of episodic excursions of low-mass protostars in the Hertzsprung-Russell (H-R) diagram triggered by strong mass accretion bursts typical of FU Orionis-type objects (FUors). These excursions reveal themselves as sharp increases in the stellar total luminosity and/or effective temperature of the protostar and can last from hundreds to a few thousands of years, depending on the burst strength and characteristics of the protostar. During the excursions, low-mass protostars occupy the same part of the H-R diagram as young intermediate-mass protostars in the quiescent phase of accretion. Moreover, the time spent by low-mass protostars in these regions is on average a factor of several longer than that spent by the intermediate-mass stars in quiescence. During the excursions, low-mass protostars pass close to the position of most known FUors in the H-R diagram, but owing to intrinsic ambiguity the model stellar evolutionary tracks are unreliable in determining the FUor properties. We find that the photospheric luminosity in the outburst state may dominate the accretion luminosity already after a few years after the onset of the outburst, meaning that the mass accretion rates of known FUors inferred from the bolometric luminosity may be systematically overestimated, especially in the fading phase.Comment: 15 pages, 12 figure

Chronic posttraumatic pseudoaneurysm of the thoracic aorta 55 Years after a blunt trauma - A case report with review of literature

Injuries of thoracic aorta due to blunt trauma carry very high mortality rates and studies estimated that less than 2% of people who sustain it remain alive if they were not diagnosed and treated appropriately. Moreover, even those lucky few live with the risk of rupture of the Pseudoaneurysm that can develop years to decades after the causative trauma culminating in the fatal internal hemorrhage. This paper reports a case of a 72-years-old Libyan male who sustained a blunt chest injury and multiple rib fractures 55 years ago that resulted in a large pseudoaneurysm of the arch of aorta

Broadband and robust optical waveguide devices using coherent tunnelling adiabatic passage

We numerically demonstrate an optical waveguide structure for the coherent tunnelling adiabatic passage of photons. An alternative coupling scheme is used compared to earlier work. We show that a three rib optical waveguide structure is robust to material loss in the intermediate waveguide and variations to the waveguide parameters. We also present a five rib optical waveguide structure that represents a new class of octave spanning power divider

Incidence of epizootic ulcerative syndrome (EUS) in freshwater fishes in the endemic area of Punjab, Pakistan

Incidence of Epizootic Ulcerative Syndrome (EUS) has been recorded for the first time in freshwater fishes in the endemic area of Punjab, Pakistan. Survey of private fish farms, hatchery and natural water bodies was conducted in a radius of 14 Km from around river Ravi near Lahore (Punjab Province) Pakistan. Out Of 1628 fishes belonging to 18 genera, 517 fishes of 10 genera were found affected with EUS. The incidence of EUS in culturable fishes was higher in Cirrhina mrigala (15.4%) moderate in Catla cat/a (13.3%) and lower in Labeo rohita (5.0%). Exotic fish, Chinese carp Ctenoparyngodon idella and Hypophthalmicthys molitrix were not affected with EUS. In non-culturable fishes the incidence of EUS was highest in Channa punctatus (72.8%) moderate in by C. straitus (65.45%) and comparatively lower Puntius ticto (43.7%). A slow growing temperature sensitive Saprolegnia spp. was isolated from all of EUS infected fish species. Aeromonas spp. and Pseudomonas spp. were isolated from the diseased fishes. Ectoparasites viz. Lernaea, Argulus and Triclwdina spp. were also isolated from the skin and gills of infected fish species. The disease was more severe in water having low alkalinity (70 mg/1), hardness (75 mg/1) and low temperature of 10-12 °C

Media Ownership and Control Law, Economics and Policy in an Indian and International Context

As academics, lawyers, businesses, regulators, and policy-makers in India cast a glance at the international experience, this book examines the legal, economic, and policy issues relating to regulation of ownership and control of media ..

Infrared and sub-mm observations of outbursting young stars with Herschel and Spitzer

Episodic accretion plays an important role in the evolution of young stars. Although it has been under investigation for a long time, the origin of such episodic accretion events is not yet understood. We investigate the dust and gas emission of a sample of young outbursting sources in the infrared to get a better understanding of their properties and circumstellar material, and we use the results in a further work to model the objects. We used Herschel data, from our PI program of 12 objects and complemented with archival observations to obtain the spectral energy distributions (SEDs) and spectra of our targets. We report here the main characteristics of our sample, focussing on the SED properties and on the gas emission lines detected in the PACS and SPIRE spectra. The SEDs of our sample show the diversity of the outbursting sources, with several targets showing strong emission in the far-infrared from the embedded objects. Most of our targets reside in a complex environment, which we discuss in detail. We detected several atomic and molecular lines, in particular rotational CO emission from several transitions from J=38-37 to J=4-3. We constructed rotational diagrams for the CO lines, and derived in three domains of assumed local thermodynamic equilibrium (LTE) temperatures and column densities, ranging mainly between 0-100 K and 400-500K. We confirm correlation in our sample between intense CO $J=16-15$ emission and the column density of the warm domain of CO, N(warm). We notice a strong increase in luminosity of HH 381 IRS and a weaker increase for PP 13 S, which shows the beginning of an outburst.Comment: 23 pages, 17 figures, A&A accepte