ATHENA detector proposal - a totally hermetic electron nucleus apparatus proposed for IP6 at the Electron-Ion Collider

ATHENA has been designed as a general purpose detector capable of delivering the full scientific scope of the Electron-Ion Collider. Careful technology choices provide fine tracking and momentum resolution, high performance electromagnetic and hadronic calorimetry, hadron identification over a wide kinematic range, and near-complete hermeticity.This article describes the detector design and its expected performance in the most relevant physics channels. It includes an evaluation of detector technology choices, the technical challenges to realizing the detector and the R&D required to meet those challenges

ATHENA detector proposal — a totally hermetic electron nucleus apparatus proposed for IP6 at the Electron-Ion Collider

ATHENA has been designed as a general purpose detector capable of delivering the full scientific scope of the Electron-Ion Collider. Careful technology choices provide fine tracking and momentum resolution, high performance electromagnetic and hadronic calorimetry, hadron identification over a wide kinematic range, and near-complete hermeticity. This article describes the detector design and its expected performance in the most relevant physics channels. It includes an evaluation of detector technology choices, the technical challenges to realizing the detector and the R&D required to meet those challenges

2-deacetoxytaxinine B : a new taxane from Taxus wallichiana

A new taxane derivative, 2-deacetoxytaxinine B (1), has been isolated from Taxus wallichiana, along with \u3b2-sitosterol, sciadopitysin, and methyl \u3b2-orcinolcarboxylate.Peer reviewed: YesNRC publication: N

What Can Be Learned from the Polymerization of a Pyridine‐Based Two‐Component System

International audienceStable poly (4-vinyl pyridine)/pyridine gels prepared by dissolving solid polymer in pyridine (the equimolar ratio of the pyridine moieties to the pyridine solvent molecules) exhibit sensor properties rapidly and reversibly increasing their conductivity upon irradiation by light in the UV-Vis and NIR ranges. Both ionic and electronic mechanisms of conductivity were detected. The gels behave as polyelectrolytes involving the positively charged pyridine moieties and negatively charged saturated chains held together by a network of hydrogen bonds between the charged and neutral species. This interpretation is corroborated by the cryo-TEM images of the gel samples resembling chains of beads and the analysis of FT-IR and 1H-NMR spectra. Photoinduced proton transfer can thus be responsible for the observed ionic conductivity of the gels. Exposing gels to the ambient light can bring about ring opening of the pyridine moieties and of the free pyridine molecules with subsequent polycondensation of the initially formed 5-amino-2,4-pentadienal. The oligomers of the latter, aza-analogs of polyacetylene, can serve as molecular wires providing the electronic component of electrical conductivity. These oligomers can also contribute to the ionic conductivity and further stabilize the gels by cross-linking of the separate polymer chains

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Not AvailablePig is considered as one of the major source of livelihood and source of animal protein for the rural poor. The pig sector has enormous potential to upscale the livelihood status of rural masses of the country. Good feed conversion efficiency, shorter generation interval and relatively smaller space requirement are the major attractions for farmers to begin pig rearing. In the backyard farming systems mainly farmers are practicing traditional way of pig rearing. Scientific know-how in pig husbandry is essential for the farmers for increased profit from the pig farming. The ICAR- National Research Centre on pig in Guwahati at Rani was established in the year 2002 to act as a repository of information on pig production and health and to undertake research and transfer the evolved technologies to the client groups. The institute also conduct frequent training programmes on scientific pig farming for farmers, entrepreneurs and government officers. By understanding and adopting these scientific practices, the income from pig farming can be increased significantly. The institute has also taken many steps for preserving the indigenous germplasm of pigs.Not Availabl