Search results for "bud"

High-efficiency silicon-compatible photodetectors based on Ge quantum dots

2011

We report on high responsivity, broadband metal/insulator/semiconductor photodetectors with amorphous Ge quantum dots (a-Ge QDs) as the active absorbers embedded in a silicon dioxide matrix. Spectral responsivities between 1-4 A/W are achieved in the 500-900 nm wavelength range with internal quantum efficiencies (IQEs) as high as ∼700%. We investigate the role of a-Ge QDs in the photocurrent generation and explain the high IQE as a result of transport mechanisms via photoexcited QDs. These results suggest that a-Ge QDs are promising for high-performance integrated optoelectronic devices that are fully compatible with silicon technology in terms of fabrication and thermal budget. © 2011 Amer…

Production and detection of atomic hexadecapole at Earth's magnetic field

2007

Anisotropy of atomic states is characterized by population differences and coherences between Zeeman sublevels. It can be efficiently created and probed via resonant interactions with light, the technique which is at the heart of modern atomic clocks and magnetometers. Recently, nonlinear magneto-optical techniques have been developed for selective production and detection of higher polarization moments, hexadecapole and hexacontatetrapole, in the ground states of the alkali atoms. Extension of these techniques into the range of geomagnetic fields is important for practical applications. This is because hexadecapole polarization corresponding to the $\Delta M=4$ Zeeman coherence, with maxim…

Tales of saviours and iconoclasts. On the provenance of "the Dead Sea Scrolls of Buddhism"

2021

Academic research on newly discovered ancient Buddhist manuscripts is largely based on objects that come from the antiquities market and to a much lesser degree on objects coming from documented and controlled archaeological excavations. Despite their being unprovenanced, collectors and scholars often present such objects with narratives mimicking provenance. The use of the label "Dead Sea Scrolls" attached to archaeological material without connections to Judaism or early Christianity is a prevalent example of this scholarly praxis. In this article, we deconstruct provenance narratives associated with the undocumented Buddhist manuscripts in the Schøyen Collection and discuss their implica…

Artes marciales japonesas: prácticas corporales representativas de su identidad cultural

2011

La implantación y difusión de las artes marciales japonesas en Occidente supuso la importación de prácticas socioculturales privadas de las premisas de su contexto de origen. ¿Cómo afrontar estas prácticas que son ajenas a nuestra identidad cultural? Una interpretación estricta exige entenderlas como prácticas corporales con una idiosincrasia cultural, caracterizadas por incorporar una experiencia vivencial en la que el cuerpo ocupa un lugar preeminente. Su enseñanza y aprendizaje se establecen a través de un sistema triangular integrado por una esencia espiritual, una forma técnica y una estructura física (sin-gi-tai), que se inserta en un proceso singular (shu-ha-ri).

Reliģiski-filozofiski raksti, 26

2019

Volume XXVI is dedicated to the themes discussed during the scientific conference Dynamic Asia: Shaping the Future that took place in Riga on 13–15 April 2018, and were further explored after this conference. The conference was organised in cooperation between the Latvian Society for the Study of Religions and the Baltic Alliance for Asian Studies. This event brought together more than 80 participants from 20 countries. The topics presented at the conference are reflected in the current volume. Many of these articles are dedicated to Japanese culture, where spiritual, material and routine aspects intermingle in all walks of life. The Far East topic is expanded in papers on Korea and South E…

Comparison of top of the atmosphere GERB measured radiances with independent radiative transfer simulations obtained at the Valencia Anchor Station a…

2005

The purpose of this work is to compare top of the atmosphere (TOA) radiances as measured by the Geostationary Earth Radiation Budget (GERB) instrument on board the METEOSAT-8 (METEOSAT Second Generation) satellite to equivalent independent radiances obtained from radiative transfer simulations performed using surface and atmospheric measured parameters gathered during the GERB Surface Ground Validation Campaign at the Valencia Anchor Station (VAS) reference area in February 2004. In this paper we try to extend the methodology previously developed and tested for the NASA Clouds and the Earth's Radiant Energy System (CERES) instrument in the framework of the SEVIRI and GERB Cal/val Area for L…

The airborne mass spectrometer AIMS – Part 1: AIMS-H<sub>2</sub>O for UTLS water vapor measurements

2016

Abstract. In the upper troposphere and lower stratosphere (UTLS), the accurate quantification of low water vapor concentrations has presented a significant measurement challenge. The instrumental uncertainties are passed on to estimates of H2O transport, cloud formation and the role of H2O in the UTLS energy budget and resulting effects on surface temperatures. To address the uncertainty in UTLS H2O determination, the airborne mass spectrometer AIMS-H2O, with in-flight calibration, has been developed for fast and accurate airborne water vapor measurements. We present a new setup to measure water vapor by direct ionization of ambient air. Air is sampled via a backward facing inlet that inclu…

In vitro response of two Sicilian genotypes of Morus (L.) through axillary bud culture.

2007

A protocol for the in vitro establishment of two Sicilian genotypes of mulberry has been set up. Multiple shoots were initiated and plantlets were produced from buds collected from mature trees of Morus alba L. and Morus nigra L., grown in the field. The influence of two explanting times (September and December) of buds on the in vitro response has been observed. The percentage of sprouting after four weeks of culture was greatly higher with material explanted from the field in September compared with the one collected in December. Morus nigra L. produced more vigorous shoots than Morus alba L.. After the second subculture the number of shoots produced decreased, in both genotypes. No diffe…

Micropropagation of Globe Artichoke (Cynara cardunculus L. var. scolymus).

2013

The globe artichoke (Cynara cardunculus L. var. scolymus) is a perennial plant cultivated in the Mediterranean region and the Americas for its edible young flower heads. Although vegetative propagation by offshoots or by “ovoli” (underground dormant axillary buds) has been the primary method of propagation, the potential for the diffusion of diseases and the phenotypic variability can be very high. The propagation of this species by axillary shoot proliferation from in vitro cultured meristems produces systemic pathogen free plants and a higher multiplication rate as compared to that obtained by conventional agamic multiplication. Axillary shoot proliferation can be induced from excised sho…

The Subject is beyond Space and Time

In physics »the subject« is considered as one who is observing and experiencing a given physical phenomena and also observing a mind model which describes this phenomena. The subject has an inherent ability to be aware of material and psychological phenomena (scientific models created by the mind, thoughts, memories, emotions) and also to be aware of “spaces” in which these phenomena are taking place. Material phenomena exist in outer physical space, psychological phenomena happen in inner psychological space. The ability of “space observation” indicates that from ontological point of view observer is “beyond” physical and psychological space.