№ 101(7), September, 2014
Public date: 30.09.2014
Archive of journal: Articles count 167, 371 kb
-
THEORETICAL BASIS CUTTINGSCREWSTEMS CUTTERBAR
DescriptionThispaper presents atheoretical justification forthe process of cutting the stemsmulti functional versatile new type of cutting system
-
REAPER OF A COMBINE HARVESTER OF A NEW TYPE
DescriptionThis article presents the possibility of modernization of grain harvesters, reapers, aimed to simplify their struc-tures and reduction of energy intensity of the process of harvesting grain crops. The article reflects the results of comparative experiments of work of a combine in different modes
-
THE MOWER WITH ALTERNATIVE CUTTER
DescriptionThe article presents the design of hand mowers with cutter, consisting of the rotating screw and stationary segments. It also shows the results of experimental studies to determine the rational angle turns of spiral screw
-
TO THE QUESTION OF RELIABILITY IMPROVEMENT FOR COLLECTING AND STORING HISTORICAL DATA
DescriptionThe article deals with improving the reliability of data collection and storage of historical data. Investigated the reliability of collecting historical information, the technique, allowing on the basis of general logical and probabilistic methods to identify the most important elements to increase the reliability of which will sig-nificantly increase the reliability of the whole system
-
Description
In the article the technology of obtaining carbide steel with hot punching porous billets produced by shock compaction, based on no form powders is described, the structure and properties of the obtained composite material are studied, the parts with enhanced mechanical properties are presented
-
THE STATE OF THE MINERAL FERTILIZERS DELIVERY PROCESS TO AGRICULTURAL PRODUCERS
DescriptionThe article has analyzed the state of the delivery process of mineral fertilizers to agricultural producers
-
Description
The accumulation features of radionuclides in the epitaphic pylaisiella moss (Pylaisia polyantha) in the territory of the city of Rostov-on-Don have been considered. The specific activities of 137Cs, 226Ra, 40K, and 232Th in the samples of moss, soils, and aerosol air have been compared. The capacity of Pylaisia polyantha to accumulate radionuclides has been estimated for four radionuclides (137Cs, 226Ra, 232Th, and 40K) with consideration for the background level. On the basis of radionuclide analysis, zones in the city of Rostov-on-Don with the highest accumulation coefficients of 137Cs, 226Ra, 40K, and 232Th were revealed. These were primarily the zones with both industrial and traffic loads and the motor transport zones
-
RELIABILITY OF ESTIMATION OF HEAVY METAL CONTAMINATION IN SOILS
DescriptionThere have been examined the methods for estimating the degree of heavy metal contamination in soils. There have been revealed some discrepancies that concern estimation of soil contamination degree and calculation of consolidated figures for chemical elements contamination in soils stated in effective normative documents. The formulas for estimation of summary soil contamination stated in normative documents reveals considerable discrepancies that do not let give an objective estimation of dangerous concentration of heavy metal. We offer estimation of concentration of several chemical elements not by summarizing their concentration but by estimating their excess in relation to rock or its concentration in soil taken as a background
-
ANAEROBIC BIODEGRADATION OF ORGANIC COMPOUNDS IN MICROBIAL FUEL CELLS
DescriptionМF-4SК membrane-based microbial fuel cell (MFC) was used for an anaerobic utilization of organic com-pounds of various liquid wastes. During incubation in short circuit mode, decreasing of the COD value on range 30-87 % depending on the type of wastes was detected. The dependence of the microbial fuel cell output power on the value of the external load was determined by a number of structural characteristics of MFC
-
Description
The article considers turban cucumber forms, we have also described the origin of this characteristic, briefly overviewed turban forms in species of the family of Cucurbitaceae. We have given the agro-botanical iconography of this trait in pumpkin cultures for cucumis. In Europe, China and America turbanoformis cucumber forms are used as a vegetable, there are some varieties. It is shown that turbanoformis forms are found in the fruit of the cucumber with hermaphrodite flower, polunina ovaries, short or shareplace the melon, and also in forms with the ongoing evolutionary process