|
|
|
|
|
Ivars Klavin?, Arta Bardule, Zane Klavina and Zane Libiete
Mercury (Hg) is a toxic contaminant that bioaccumulates in trophic chains in its organic form?methylmercury (MeHg). Hg methylation is driven by microorganisms in favourable conditions, stagnant water pools being among potential methylation hotspots. In t...
ver más
|
|
|
|
|
|
|
|
|
|
|
Vaidas Luko?evicius, Rolandas Makaras and Andrius Dargu?is
Two trends could be observed in the evolution of road transport. First, with the traffic becoming increasingly intensive, the motor road infrastructure is developed; more advanced, greater quality, and more durable materials are used; and pavement laying...
ver más
|
|
|
|
|
|
|
|
|
|
|
Julian J. Zemke, Michel Enderling, Alexander Klein and Marc Skubski
This study discusses the influence of soil compaction on runoff generation with a special focus on forested Andosol sites. Because of their typical soil physical characteristics (low bulk density, high pore volumes) and the existent land use, these areas...
ver más
|
|
|
|
|
|
|
|
|
|
|
Alexander Kvitko, Boris Karpov, Pavel Petukhov, Aleksey Ushakov
Pág. 384 - 392
Presently used conventional Russian pavements including macadam base asphalt covering loses its advantages under the current conditions of heavy and high traffic. In this regard, for the development of the country's economy and transport infrastructure, ...
ver más
|
|
|
|
|
|
|
|
|
|
|
Farzam Tavankar,Amir E. Bonyad,Mehrdad Nikooy,Rodolfo Picchio,Rachele Venanzi,Luca Calienno
Pág. e009
Aim of study: The main aims of this study were to determine of damage level to residual stand and soil disturbance from mechanized selection logging. Area of study: Mixed beech stands in Caspian forests, northern Iran.Material and methods: Point-transect...
ver más
|
|
|
|
|
|
|
|
|
|
|
Michal Allman,Martin Jankovský,Valéria Messingerová,Zuzana Allmanová,Michal Ferencík
Pág. e038
Aim of study: The primary objective of this paper was to compare the effects of different types of forestry machine chassis on the compaction of the top layers of soil and to define the soil moisture content level, at which machine traffic results in max...
ver más
|
|
|
|
|
|
|
|
|
|
|
D. M. Kozachenko,R. V. Vernyhora,M. I. Berezovyi
Pág. 34 - 37
For modeling of the trains accumulation process on marshalling tracks the special simulation model is designed. The model is used for study of the influence of specialization of marshalling tracks on duration of the operations for liquidation of «windows...
ver más
|
|
|
|
|
|
|
|
|
|
|
K. Ts. Glavatskyi,V. M. Proskurnia
Pág. 86 - 89
Values of resistance to the movement and turn of tractor on the caterpillar motion of making more compact machine, calculated on the offered method, less approximately twice from got with the use of help recommendations, as refined data are used.
|
|
|
|
|
|