Development of a material processing plant for lunar soil

Currently there is considerable interest in developing in-situ materials processing plants for both the Moon and Mars. Two of the most important aspects of developing such a materials processing plant is the overall system design and the integration of the different technologies into a reliable, lightweight, and cost-effective unit. The concept of an autonomous materials processing plant that is capable of producing useful substances from lunar regolith was developed. In order for such a materials processing plant to be considered as a viable option, it must be totally self-contained, able to operate autonomously, cost effective, light weight, and fault tolerant. In order to assess the impact of different technologies on the overall systems design and integration, a one-half scale model was constructed that is capable of scooping up (or digging) lunar soil, transferring the soil to a solar furnace, heating the soil in the furnace to liberate the gasses, and transferring the spent soil to a 'tile' processing center. All aspects of the control system are handled by a 386 class PC via D/A, A/D, and DSP (Digital Signal Processor) control cards

Some Notes on the Construction of Christos Ho Pantepoptes (Eski Imaret Camii) in Istanbul

Μη διαθέσιμη περίληψηno abstrac

Binbirkilise Revisited: The 1887 Photographs of John Henry Haynes

Η τοποθεσία των πρώιμων βυζαντινών χρόνων του Binbirkilise (οι χίλιες και μία εκκλησίες), κοντά στην επαρχία Καραμάν στη Λυκαονία, είναι περισσότερο γνωστή από την τεκμηρίωση του 1907 του Sir William M. Ramsay και της Gertrude Bell. Άγνωστη σε αυτούς, ωστόσο, ήταν η επίσκεψη το 1887 του Αμερικανού αρχαιολόγου John Henry Haynes, ο οποίος φωτογράφισε τους ναούς 8, 10, 13, 32 και 39. Εξαιτίας σοβαρών φθορών στα κτήρια μεταξύ του 1887 και του 1907, οι φωτογραφίες του Haynes παρέχουν σημαντικές λεπτομέρειες των κτηρίων, οι οποίες δεν ήταν γνωστές στους μεταγενέστερους ερευνητές.The early Byzantine site of Binbirkilise (the Thousand and One Churches) near Karaman in Lycaonia is best known today from the 1907 documentation by Sir William M. Ramsay and Gertrude Bell. Unknown to them, however, was the visit in 1887 by the American archaeologist John Henry Haynes, who took photographs of Churches 8, 10, 13, 32, and 39. Because of severe damage to the buildings between 1887 and 1907, Haynes’s photographs provide important details of the buildings not available to later scholars

The Byzantine Church at Enez: Problems in Twelfth-Century Architecture

The large and impressive Byzantine church known as Fatih Camii was built at Enez in Turkish Thrace was first published by Eyice in 1969. Since that time, it has been noted by Vango and Vocotopoulos, but has otherwise received little scholarly attention. The church is not securely dated and its original dedication is unknown, but its size alone indicates that the foundation was accorded importance. The plan measures approximately 21 x 38 meters, and is thus larger than almost all of the Middle and Late Byzantine churches of Constantinople

A Byzantine Chapel at Didymoteicho and its Frescoes

The fortified citadel of Didymoteicho in Greek Thrace figured prominently in Late Byzantine history. It had been an imperial residence and a major military and administrative center since the mid-13th century, and throughout the remainder of its Byzantine history, it maintained close relations with Constantinople. Andronicus III resided in Didymoteicho during the 1320s, prior to his accession to the throne in 1328. With the proclamation of John VI Cantacuzenus as emperor in Didymoteicho in 1341, the city became his de facto capital, from which he launched his disastrous civil war

XLOOPS -- A Program Package calculating One- and Two-Loop Feynman Diagrams

The aim of XLOOPS is to calculate one-particle irreducible Feynman diagrams with one or two closed loops for arbitrary processes in the Standard model of particles and related theories. Up to now this aim is realized for all one-loop diagrams with at most three external lines and for two-loop diagrams with two external lines.Comment: 84 pages, Postscript, program package and this manual also available at http://wwwthep.physik.uni-mainz.de/~xloops/, minor changes and bug fixes are included no

Building Medieval Constantinople

The visitor to modem Istanbul is often struck by the dramatic contrasts of the city: ostentatious displays of wealth appear side by side with poverty and squalor; the decrepid hovels of the poor lie in the shadows of monuments of past glory; at the same time, a new city rises amid the ruins of antiquity. How much has the character of the city changed since Byzantine times