Environmental Science & Technology is published by the American Chemical Society. 1155 Sixteenth Street N.W., Washington, DC 20036 Correspondence/Rebuttal Comment on “The 1.7 Kilogram Microchip: Energy and Material Use in the Production of Semiconductor Devices” Farhang Shadman, and Terrence J. McManus Environ. Sci. Technol., 2004, 38 (6), 1915-1915• DOI: 10.1021/es030688q • Publication Date (W...

We compare the evolution of spectral shape with luminosity in GRS 1915+105 with that of ‘normal’ black holes. The pathological time variability of GRS 1915+105 does not indicate that it belongs in a different class to all the other objects. At comparable fraction of Eddington luminosity its spectra and (more importantly) time variability behaviour are similar to that seen in the ‘normal’ black ...

The RXTE observations of GRS 1915+105 have given a new impulse to the study of spectral and timing properties of the X-ray emission of black hole candidates. At variance with any other known source, GRS 1915+105 shows dramatic changes on time scales as short as a tenth of a second. These changes are associated to marked spectral changes which have been interpreted as changes of the observable i...

Bicaudal-D (Bic-D), Egalitarian (Egl), microtubules and their motors form a transport machinery that localizes a remarkable diversity of mRNAs to specific cellular regions during oogenesis and embryogenesis. Bic-D family proteins also promote dynein-dependent transport of Golgi vesicles, lipid droplets, synaptic vesicles and nuclei. However, the transport of these different cargoes is still poo...

The writers wish to express their indebtedness to the Cleveland Fund of the American Association for the Advancement of Science for a grant of $500.00, which has been used in meeting the expenses of this work. They wish to thank C. N. Shah, who is working on the law of force adjacent to an atom nucleus, for much assistance in connection with this work. 1 Harkins and Ryan, J. Amer. Chem. Soc., 4...

Einstein’s early calculations of gravitational lensing, contained in a scratch notebook and dated to the spring of 1912, are reexamined. A hitherto unknown letter by Einstein suggests that he entertained the idea of explaining the phenomenon of new stars by gravitational lensing in the fall of 1915 much more seriously than was previously assumed. A reexamination of the relevant calculations by ...

The problem of the Dobrujan land frontier between Bulgarian and Romanian national states, which officially came up after San Stefano Berlin (1878) peace treaties was aggravated by Peace Bucharest (1913), dominated bilateral relations for a few decades. hereby study focuses on period August 1914 – September 1915, when both South-Eastern European states were neutral towards Great War. This contex...