The fractional vegetation cover (FCover) is an essential biophysical variable and plays a critical role in the carbon cycle studies. Existing FCover products from satellite observations are spatially incomplete and temporally discontinuous, and also inaccurate for some vegetation types to meet the requirements of various applications. In this study, an operational method is proposed to calculat...

A hybrid technique for the selective growth of ZnO nanorod arrays on wanted areas of thin cover glass substrates was developed without the use of seed layer of ZnO. This method utilizes electron-beam lithography for pattern transfer on seedless substrate, followed by solution method for the bottom-up growth of ZnO nanorod arrays on the patterned substrates. The arrays of highly crystalline ZnO ...

In a spin-glass system on a random graph, some vertices have their spins changing among different configurations of a ground-state domain. Long-range frustrations may exist among these unfrozen vertices in the sense that certain combinations of spin values for these vertices may never appear in any configuration of this domain. We present a mean field theory to tackle such long-range frustratio...

In this paper, we present sequential atmospheric pressure plasma-assisted laser ablation of photovoltaic cover glass. First, glass samples were plasma pre-treated using a hydrogenous plasma process gas in order to accomplish a modification of the near-surface glass network by a chemical reduction and the implantation of hydrogen. As a result, the transmission at a wavelength of 355 nm was reduc...

Geopersia is published biannually by the College of Science, University of Tehran, Iran. The College of Science published Journal of Science, which covered all fields of basic science, from 1968 to 2010. It was then decided that the College’s journals should be more specialized, and hence publication of Geopersia was launched. Articles printed in Geopersia will be available online too. Aims an...

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The spontaneous emission of volatile organic compounds (VOCs) from common household items presents physiological hazards when inhaled over long periods of time. As a result, developing economical and reliable methods of detecting VOCs in hermetically-sealed enclosures, such as those employed in transportation, are important in ensuring the safety of passengers. In this study, copper(I) iodide (...

Accurate monitoring of albedo trends over snow is essential to evaluate the consequences global cover retreat on Earth’s energy budget. Satellite observations provide best way monitor these globally, but their uncertainty increases snow. Besides, different products sometimes show diverging trends. A better assessment fitness satellite for needed. We analyze consistency black-sky estimates from ...

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In article number 2300137, Nathan J. Ray, Jae-Hyuck Yoo, Hoang T. Nguyen, and Eyal Feigenbaum demonstrate the ability to generate all-glass metasurfaces that exhibit negligible reflection across broad wavelength band 350 nm (ultraviolet) 2350 (mid-infrared), i.e., virtually entire solar spectrum for both polarizations acceptance angles up 100° (angle of incidence = ±50°). This is done by dry et...