Abstract. The effect of clear-fell harvesting on soil greenhouse gas (GHG) fluxes carbon dioxide (CO2), methane (CH4), and nitrous oxide (N2O) was assessed in a Sitka spruce forest growing peaty gley organo-mineral northern England. Fluxes from the litter layer were measured monthly by closed chamber method chromatography over 4 years two mature stands, with one area harvested after first year....

Computer systems are increasingly employed in circumstances wheretheir failure (or even their correct operation, if they are built to awedrequirements) can have serious consequences.There is a surprising diversity of opinion concerning the propertiesthat such \critical systems" should possess, and the best methods todevelop them. The dependability approach grew out of th...

The aim of the study was to assess soil technogenic radioactivity in vicinity Morzhovets Lighthouse and surrounding areas by measuring radio caesium (137Cs) specific activity. Location time study. Field work performed area around (the Island, Archangelsk region) summer 2022. Methods. Soil samples were collected at 26 sites from 0-5 cm layer, which 12 also 5-10 и 10-20 layers. Aboveground phytom...

The use of trademarks or names of manufacturers in this report is for accurate reporting and does not constitute an official endorsement, either expressed or implied, of such products or manufacturers by the National Aeronautics and Space Administration. Summary Static force and moment tests of a 0.062-scale model of a hypersonic vehicle study concept known as the LoFLYTE™ 1 configuration were ...

Gray hydromorphic soils are imperfectly to poorly drained soils that occur on the coastal fringes of the Hawaiian Islands on surfaces of Pleistocene to Recent age. Mottling is characteristic of the soils, and gley horizons occur in the more hydromorphic soils in the group . As the soils become hydromorphic, soil color values increase and structures deteriorate. Halloysite is the dominant clay m...

-Greigites from a gtey and a Tertiary sediment were investigated by X-ray diffraction and M6ssbauer spectroscopy. The cell-edge length a of 9.8639/~ + 0.0003 A, for the soil greigite was significantly smaller than that of the sedimentary greigite (9.8737 A, + 0.0004 A,), but both cell-edge lengths were smaller than the value given on JCPDS card #16-713 (9.876 ~,). Both greigites had 440 as stro...

A new genus and species of stygobiontic bidessine dytiscid beetle, Comaldessus stygius, from Comal Springs, Texas, is described and compared with the proposed sister epigean genus Uuarus and the only other known stygobiontic bidessine water beetles, Trogloguignotus concii Sanfilippo from Venezuela and Uvarus chappuisi (Peschet) from Africa. Distinctive characters of the adult are illustrated wi...

Numerous concepts of cardiac electrophysiology have been advanced, enthroned, and then laid to rest. Other theories have withstood the test of time despite the restless energy of inquisitive doubt of future generations. Until recently, one such concept has been the foundation of the mechanisms of fibrillation, which was imprinted in the very name to emphasize its fibrillar or myogenic nature. I...