Mobile robots are recognized as being essential for the exploration of planets in our solar system. In this paper, we introduce a new approach for a self-localization and navigation unit for mobile platforms in extraterrestrial environments. Our work is based on a general concept for self-localization in unstructured environments. It has been implemented for earthbound environments and successf...

Background: This study has been undertaken to find out the possible radioprotective potential of the Alstonia scholaris extract (ASE). Materials and Methods: For experimental study, healthy Swiss albino male mice were selected from an inbred colony and divided in four groups. Group I (normal) did not receive any treatment. Group II was orally supplemented ASE once daily at the dose of ...

Laser mass spectrometry is a powerful tool for the sensitive, selective, and spatially resolved analysis of organic compounds in extraterrestrial materials. Using microprobe two-step laser mass spectrometry (muL(2)MS), we have explored the organic composition of many different exogenous materials, including meteorites, interplanetary dust particles, and interstellar ice analogs, gaining signifi...

It has often been concluded that searches for extraterrestrial intelligence (SETI) should concentrate on attempts to receive signals in the microwave region, the argument being given that communication can occur there at minimum broadcasted power. Such a conclusion is shown to result only under a restricted set of assumptions. If generalized types of detection are considered-in particular, phot...

Extracellular UV-screening pigments gloeocapsin and scytonemin present in the exopolysaccharide (EPS) envelopes of extremophilic cyanobacteria of freshwater and marine environments were studied by Raman spectroscopy and compared to their intracellular photosynthetic pigments. This Raman spectral analysis of the extracellular pigment gloeocapsin showed that it shared Raman spectral signatures wi...

The history of medicine and science in Russia is full of global “firsts,” and Russians are rightly proud of this scientific heritage. Even non-Russians with a working knowledge of scientific history can cite, for instance, that the periodic table of elements was conceived by Dmitri Mendeleev, the first virus was isolated by Dmitry Ivanovski, and the first extraterrestrial satellite placed in or...

Monitoring lightning electromagnetic pulses (sferics) and other terrestrial as well as extraterrestrial transient radiation signals is of considerable interest for practical and theoretical purposes in astroand geophysics as well as meteorology. Managing a continuous flow of data, automation of the analysis and classification process is important. Features based on a combination of wavelet and ...

AIMS To validate the accuracy of construction worker recall of task and environment based information; and to evaluate the effect of task recall on estimates of noise exposure. METHODS A cohort of 25 construction workers recorded tasks daily and had dosimetry measurements weekly for six weeks. Worker recall of tasks reported on the daily activity cards was validated with research observations...

Secondary seismic radiation is generated by rock fracture in the "damage zone" of an underground nuclear source and by frictional sliding on preexisting fractures in the "non-linear elastic zone" at larger distances from the shot point. This radiation is important for two reasons: (1) Johnson and Sammis [2000] have shown that it can make an important contribution to the far-field seismic signal...