نتایج جستجو برای: eaqìqah alma
تعداد نتایج: 6078 فیلتر نتایج به سال:
Context. The detection of the rotational lines of CO in proto-galaxies in the early Universe provides one of the most promising ways of probing the fundamental physical properties of a galaxy, such as its size, dynamical mass, gas density, and temperature. While such observations are currently limited to the most luminous galaxies, the advent of ALMA will change the situation dramatically, resu...
CD9, a widely expressed membrane protein of the tetraspanin family, has been implicated in diverse functions, such as signal transduction, cell adhesion, and cell motility. We tested the effects of an anti-CD9 monoclonal antibody (ALMA.1) on the migration and proliferation of human vascular endothelial cells (ECs) during repair of an in vitro mechanical wound mimicking angiogenic processes. ALM...
The ALMA Common Software (ACS) is a set of application frameworks built on top of CORBA. It provides a common software infrastructure to all partners in the ALMA collaboration. The usage of ACS extends from high-level applications such as the Observation Preparation Tool [7] that will run on the desk of astronomers, down to the Control Software [6] domain. The purpose of ACS is twofold: from a ...
OBJECTIVE To evaluate the use of urinary mercapturic acids as a biomarker of human exposure to allyl chloride (3-chloropropene) (AC). During three regular shut down periods in a production factory for AC, both types of variables were measured in 136 workers involved in maintenance operations. METHODS Potential airborne exposure to AC was measured by personal air monitoring in the breathing zo...
We propose an amplitude calibration strategy for ALMA which attempts to reach the 1 % precision for absolute calibration. Key points and major difficulties are identified. Polarization is ignored in this first step. We first review the properties of possible calibration sources. Planets and specially giant planets satellites are the preferred reference sources for flux calibration. Asteroids ar...
The ALMA Scienti c Advisory Committee (hereafter ASAC) was formed in late 1999, as requested by the ALMA Coordinating Committee (hereafter ACC). The role of the ASAC is to provide scienti c advice to the ACC, the ALMA Executive Committee (hereafter AEC) and the project, via the project scientists. As requested, the ASAC developed its own charter, which we supply as Appendix A. The ASAC decided ...
We present results of ALMA (Cycle-0) observations of the CO (6-5) line emission and the 435μm continuum of two nearby luminous infrared galaxies (LIRGs) NGC 34 (a major merger with an AGN) and NGC 1614 (a minor merger with a circum-nuclear starburst). Using receivers in the highest frequency ALMA band available (Band-9), these observations achieved the best angular resolutions (∼ 0′′.25) for AL...
The Atacama Large Millimeter Array (ALMA) is a joint project between astronomical organizations in Europe and North America. ALMA will consist of at least 64 12-meter antennas operating in the millimeter and sub-millimeter range, with baselines up to 14 km. It will be located at an altitude above 5000m in the Chilean Atacama desert. The ALMA Common Software (ACS) provides a software infrastruct...
Mobile ad hoc networks (MANETs) are autonomous infrastructure less networks that can establish limited range, low cost networks for sharing data between devices. In MANET every node can access only local network but if a node in MANET want to access the Internet, it need to discover an Internet gateway. To discover the gateway, the node either may depend on periodic gateway advertisement or can...
The ALMA requires a coherent local oscillator at each antenna. Due to the long distribution length from central building to each of the antennas, the fiber optic path to each antenna must be stabilized to meet the ALMA specification. A round trip phase correction technique has been adopted to meet these specifications, and that technique is described here. Also, a summary of various techniques ...
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