EXTRACTION MECHANIZATION OF SOFT SOILS

The state economic development is largely determined by the effectiveness of its individual structural elements. Among them, a special place is occupied by trends in the mineral sector, which dictates the requirements and mechanisms for the development of natural resources, creating the basis for a national strategy. However in this area there are a number of unsolved problems, which include: a low level of rational use of machine-technological mining systems from under the water with minimal man-made impact. The authors consider existing and alternative extraction methods of peat raw materials. The tasks facing the mineral resource sector can be solved through technological priority developments of aggregated extraction complexes for the peat raw materials and the equipment modernization for mining complexes. The analysis is carried out and recommendations are made for the working equipment modernization of the aggregated mining complex. Variants of the excavator excavation bucket for the extraction of peat raw materials from under water have been proposed. The results of studies on primary dehydration, combining mining and dewatering cycles in a bucket, are presented; the work gives the recommendations on the bucket use and the expediency of operating the mining machine's extraction body when extracting peat raw materials.

Extraction mechanization of soft soils

The state economic development is largely determined by the effectiveness of its individual structural elements. Among them, a special place is occupied by trends in the mineral sector, which dictates the requirements and mechanisms for the development of natural resources, creating the basis for a national strategy. However in this area there are a number of unsolved problems, which include: a low level of rational use of machine-technological mining systems from under the water with minimal man-made impact. The authors consider existing and alternative extraction methods of peat raw materials. The tasks facing the mineral re-source sector can be solved through technological priority developments of aggregated extraction complexes for the peat raw materials and the equipment modernization for mining complexes. The analysis is carried out and recommendations are made for the working equipment modernization of the aggregated mining complex. Variants of the excavator excavation bucket for the extraction of peat raw materials from under water have been proposed. The results of studies on primary dehydration, combining mining and dewatering cycles in a bucket, are presented; the work gives the recommendations on the bucket use and the expediency of operating the mining machine's extraction body when extracting peat raw materials.

Complexes based on collagen and keratin for applications in agriculture

In the circular economy context, the use of proteins from collagen and keratin by-products of leather industry to obtain products for agriculture serves to reduce the carbon footprint generated from industry by reducing the amount of chemical synthesis products administered in agricultural technologies. This paper presents complexes based on collagen and keratin extracts obtained from by-products of the leather industry and their characterization. Thermal and chemical-enzymatic hydrolysis of semi-processed leather and degreased wool by-products was performed for protein extraction. Complexes were obtained by addition and crosslinking with active principles and vegetable tannins to collagen and keratin extracts. The characterization of complexes was performed based on the results of analytical investigations by physico-chemical methods: volumetry, potentiometry, IR spectroscopy, Dynamic Light Scattering and Texture Analysis. It has been found that collagen and keratin extracts contain sufficient proportions of small and medium size components size, of the order of 1-100 nm and of 100-1000 nm, specific for free amino acids and small oligopeptides with a role in bio stimulating seed germination, but also contain large size components, over 1000 nm, in considerable proportions, which provide the adhesive and film-forming properties, with a role in foliar application and retarded release of amino acids.

FIBRE-REINFORCED POLYMER BARS IN PRECAST SLABS FOR ROADS TO OIL AND GAS EXTRACTION COMPLEXES

Considered an example of the application of fibre-reinforced polymer bars in precast slabs for temporary roads to oil and gas extraction complexes. Found that samples of products by geometric requirements similar Ferro-concrete products, but reinforced fibre-reinforced polymer bars accessories instead of metal. The results of replacing metal fittings on the fibre-reinforced polymer bars in the experimental samples. Given the comparative assessment of the conformity of prototypes of requirements on indicates the ability and crack resistance from. Found that fibre-reinforced polymer bars valves may be used in the construction of a prefab temporary roads without reducing their carrying capacity. It is proven that the use of this rebar for reinforcement of structures that work on resilient basis, both at the stage of manufacture and operation. It is shown that the resulting experience can be used in the planning and in the design, manufacture and test prototypes, and the analysis of the obtained results allow you to identify opportunities for the implementation of this direction in Ukraine.

Extraction of aniline from wastewater: equilibria, model, and fitting of apparent extraction equilibrium constants

Reactive extraction complexes of aniline to D2EHPA or P507 in various diluents are obtained by the fitting equilibrium models presented.

Theoretical studies on the AnO2n+ (An = U, Np; n = 1, 2) complexes with di-(2-ethylhexyl)phosphoric acid

The AnO2n+ (An = U, Np; n = 1, 2) extraction complexes with HDEHP (di-(2-ethylhexyl)phosphoric acid) in nitric acid solutions.

Where is Fort McMurray? The Camera as a Tool for Assembling "Community"

In response to the global mythology spawned by visual representations of Fort McMurray, Canada, this article examines a critical, collaborative youth project that sought oblique entry points to prevailing storylines of “community” and to what it might mean to live in the shadow of one of the world’s largest resource extraction complexes. Building on visual methodologies where participants are encouraged to produce representations of home and place, we explore the two-way dynamic of the camera as a catalyst for assembling a temporary research collective and, by the same token, as a tool for composing and assaying the contours of “community.” The project under consideration encouraged participants to learn skills of photography and to dynamically engage with other participants, researchers, and the place(s) of Fort McMurray around the creation and public display of images in both on-line and off-line spaces. Where possibilities of “community” are polarized, occluded, and/or overdetermined by the visual narratives of rapid resource development, collaboration around the camera helps to discern and speak back to the fault lines of community — including as they play out in the everyday lives of youth. Specific photos and the narratives around them are used to illustrate how the camera created and revealed iterations and relations of community across multiple scales, from the microcosm of the photography research group to the regional infrastructure of oil sands production.