Browse

One of the common applications of geosynthetics is their use as reinforcement for aggregate and soil layers. Geosynthetics improve the mechanical properties of the reinforced layers, which are originally, due to various reasons, insufficiently protected. Therefore, the use of geosynthetics allows for bearing heavier loads thanks to the soil-reinforcement system and an extended material durability. This article describes the laboratory tests of mechanical properties of a hexagonal geogrid made of polypropylene used...

Based on a real-life example, the report presents the methodology and the process of adapting in situ measurements from static CPTu probing for an application in a design process, using direct methods of driven pile capacity estimation. The report discusses two approaches. One of them is based on a real-life original CPTu measurement involving preliminary soil assessment while the other one is based on the initial averaging of the measurement values qc and fs. The paper provides methods of averaging cone resistanc...

The experience accumulated in Romania and worldwide by means of studies, design and control of the behaviour of many shallow foundations has rendered evident the existence of some soils, such as the loessial soils and the plastic clay fills, which are characterized by a high deformability, due to their sensitivity at wetting. One of the defining feature of these soils is their пїЅcontractancyпїЅ under the simultaneous action of compression and shear stresses. The macroporous soils, such as the loessial soils, have...

With the decrease of conventional oil production, the role of heavy hydrocarbons in the world energy balance will continue to increase in the near future. Heavy oil and natural bitumen as two of the alternative sources are perhaps the most readily available to meet short- and long-term needs. Intrastratal oxidation requires a formation temperature in the range of 250-350пїЅC, at which it is possible to achieve an in-situ oil upgrading through the low-temperature oxidation reactions of petroleum hydrocarbons. Usual...

The influence of ultrasound energy on bioscouring treatment applied on a 50 % of hemp + 50 % of cotton woven fabric was studied. The aim of the bioscouring treatment was the removal of the natural cellulose attendants for better fabric properties. The treatment conditions were: variable concentration between 1-3 % (o.w.f.) of the commercial enzyme product Beisol PRO, which is a mixture of pectinases from Bezema Company, Switzerland, 2 g/L of the complexing agent EDTA, 0.5 % of wetting agent Denimcol Wash RGN, phos...

Coal bottom ash (CBA) contains many elements that exist in different forms, which may change throughout the coal combustion process. This study presents the concentration and speciation of zinc in bottom ash of coal. Determination of total zinc was performed by two-stage microwave-acid digestion followed by ICP-OES. A sequential extraction process to speciation of zinc from coal bottom ash was investigated [1]. The definition of species is based on several different levels of atomic and molecular structure where c...

Background: Influenza A viruses continue to be the main cause of major epidemics, accompanied by high mortality. The vaccinal prevention for a number of reasons, such as the unpredictability of the molecular genetic and immunological characteristics of new epidemic and pandemic strains of influenza A virus, is not able to provide full protection of the population against viral infections. In addition due to the increasing resistance among influenza A viruses, the effectiveness of existing commercial antiviral drug...

In the production of electricity in the Thermal Power Plants, coal is one of the fuels. After burning coal, is resulting large amounts of waste in the form of slag and ash stored in ponds. After completing the submission of slag and ashes in ponds they have to rentered in the natural circuit. Soil of tailing ponds has a small grain size and is permeable, the structure of ponds are landscaped with irrigation systems and drainage water. Also soils have a low nutrient content and contain certain chemicals that could ...

The bakery industry has gone through a revolution in the last 150 years. Small handmade bakeries existing in almost every village are giving place to highly technologized bakery industry since it is considered that the bread made this way is more efficient. Productivity has become the key of success this period of time. New baking technologies have been developed to comply better with the new demands of the market. In the present context, the main goal of this paper was to investigate the impact of different bakin...

In food industry water is used as a raw material, as a solvent for substances with different density when washing products and equipment, as transport water or merely cooling water.Quality monitoring of the hygienic drinking water and the waste water discharged is one of the conditions requested for all producing, processing, storing, keeping, shipping and marketing product supply units. The increase in acquisition, application and development of knowledge, advanced services and techniques in the fields of environ...

Acoustic or phonic pollution is a type of noise pollution caused by noises, a complex of non-periodic sounds with random disagreeable insurgency that affects the psychological and biological state of human and animal organisms. The physical or objective characteristics of the noise are the strength or sound intensity (which depends on the features of the source, the distance and the possibilities of transmission or multiplication), duration and frequency. For the determination of the noise level, sound-meters, whi...

The major changes that have taken place over the last decade on the world food market reveal peopleпїЅs great interest in health and nutrition. The modern consumer is being warned about the major influences that the diet has on his health condition by the appropriate information accompanying the well-packaged product or by publicizing the risk of some diseases whose major cause is an unbalanced diet. Since there is great interest in providing bakery products with preservation by complying with the clean label stat...

Multicolored asian ladybird Harmonia axyridis Pall. is a well-known aphid predatory species, of Asian origin. The species is classified taxonomically, at present, in the tribe Coccinellini family Coccinellidae. The species is considerate bivoltine, but may submit up to 5 generations/ year. The main role of the species is its use in biological control. A negative impact on potential benefits that accompany this coccinellid would be predation insects native to the same family. Current status of invasive species is t...

In the western half of the Getic Subcarpathians, between Motru and Olte? is individualized one of the largest and unitary Carpathian depression areas, The Sub-Carpathian Depression of Oltenia.The Sub-Carpathian Depression of Oltenia, the sector between Olte? and Motru, is extended from East to West, for about 60 km, on an area of 130231 Ha.To the Mezorelief level, there are the following forms of landscapes: The groove of Internal Sub-Carpathian Depression, The Internal Carpathian Hills, The External Depression Gr...

Industry, pollute environments (air, water, soil), and bring damage to the health, both to the people and all living beings. In areas where oil and gas development is prevalent, air, water and soil resources can become contaminated with oil and gas wastes and by products. The pollutants emitted by the oil and gas industry, may bring damage immediate or long-term, to the environment. Mining industry and the oil processing, affects the environment through gaseous and liquid hydrocarbons. All products resulting from ...

The paper analyzes physicochemical properties of liquid products of waste tyre pyrolysis, and attempts to assess their usefulness as fuel for diesel engines. Every year, the number of produced vehicle tires increases at a very fast pace. Used tyres turn into waste that is difficult to manage simply because, according to relevant EU regulations, vehicle tires should be subject to recycling. To a large extent, the problem of waste tyres management may be resolved by their utilization through pyrolysis. The processin...

The noise of bandconveyors used in industry, according to the rules must be reduced below the maximum permissible areas where they are located. To reduce the level of noise pollution in the operation area on the bandconveyors can be used soundproufing panels. In order to not influence the placement of the panels of geographical conditions they can be placed directly on the metal structure of bandconveyors. Panels installed on bandconveyors to isolate sound can be damaged by vibrations arising in their structure. V...

The article presents results of using vibratory jaw crusher for feed preparing for the granulation process. The main aim of the study was to determine the possibility of preparing the limestone feed for non-pressurized granulation process by means of very fine crushing in the laboratory vibratory jaw crusher KW 40/1 with kinematic actuation of jaws. The crusher is characterized by high average degree of fragmentation (30-50). The study was conducted in two stages. The first stage included experiments with vibrator...

Jiu Valley represents one of the most important areas for coal mining in Romania, thus industrial development has generated a high level of health and safety at work issues. At work places in mining industry, the staff of the woodworking workshops is exposed to various concentrations of dust, possibly leading, in time, to occupational illnesses. Thus, wood processed in mining unitsпїЅ workshops is utilized for temporary support of coal faces, wrapping underground mining, insulation dams, ventilation doors, etc. Th...

Developing products modified structurally and functionally that ensure health benefits is relatively recent and is the result of accepting the idea that food plays an important role in the prevention and therapy of some health conditions; these arguments are at the basis of the appearance of пїЅfunctional foodsпїЅ with пїЅhealth benefitsпїЅ. Modification techniques of non hydrogenated palm oil lipids (simple mixing, hydrogenation, interesterification, fractionation) are no novelty since they are being optimised th...

This paper presents a study of the structural models convergence, rezulted from CAD (Computer Aided Design ), based on method of estimation. The study of the structural models convergence presented a method based on the convergence, in the sense of mathematical analysis, adapted to finite strings. The convergence estimators are status sizes that characterize the response of the structural model to the given load. As convergence estimators can be used sizes that characterize the response of the structure, like foll...

This paper presents the diversity of parasites species identified on cultured fish species, the degree of infestation and the epizootological state in nine fish farms (most of them producing fish fry for stocking other fish farms). These farms are located in five counties in the south of Romania (Arge?, DпїЅmbovi?a, Teleorman, Giurgiu and C?l?ra?i). A total of 653 fish were investigated. The fish species belong to two fish families namely Cyprinydae: Abramis brama, Cyprinus carpio, Carassius gibelio, Hypophthalmic...

Sea buckthorn (Hippophae rhamnoides L.) has gained worldwide researchers attention as a unique and valuable plant, primarily for its medicinal and nutritional potential. The berries can be capitalized by their processing in order to obtain derived alimentary products such as, e.g. juice and jam, as well as used for flavoring of dairy products. The dried sea buckthorn berries and leaves are used for tea. Lately, due to the fact that consumers are more open to information, so their level of awareness is higher, ther...

This paper aims to analyse the link between the hydraulic structures and the watercourse riverbed. In this regard the Epurasu branch has been chosen as a case study area. This is a secondary branch of the Lower Danube, located between the 341-334 kilometers of the Danube River. Epurasu branch is in an advanced state of silting/colmation, possibly due to the unfinished damming works, from the mid-80s of the last century. Thus, over the years, various solutions have been proposed to ensure the longitudinal connectiv...

This investigation is aimed to determine general development patterns of the natural and climatic situations and lakes of the boreal zone in the later and postglacial time in the southeastern periphery of the Fennoscandian crystalline shield since the time of the last deglaciation. The analysis of the subfossil Cladoceran community was carried out on the basis of the 23 samples of Lake GahkozeroпїЅ bottom sediments in the Republic of Karelia. In the subfossil Cladoceran community of the lake 42 taxa have been iden...

Prebiotics are one of most common components of functional food. Jerusalem artichoke tubers contain up to 20 % of inulin and oligofructose (OF) well known as probiotic substances. In agriculture Jerusalem artichoke (JA) has a number of advantages while it is used. It is zoned in temperate climates like the northern regions of China and Russia. Due to its acceptable organoleptic properties (sweetish taste without bitterness) compared with chicory (commonly used as source of probiotic), JA tubers can be used in func...

The solution of subsoil-structure interaction is affected by several factors as a choice of interaction model, influence of physical-nonlinear behaviour of structure and co-effects of the upper structure and the foundation structure. The subsoil-structure interaction can be solve by application of analytical methods or numerical methods - eg. Finite Element Method (FEM) or Boundary Element Method (BEM). FEM was used for numerical analysis performed in this article. Many different interaction models implemented in ...

The article considers mineralogical and technological features of ferruginous quartzites in the Zaimandrovsky regionпїЅs deposits and tailings from the rough magnetic separation. A technology has been developed for the stadial separation of magnetite concentrate from the initial ore, including the ore preparation, magnetic separation, and also the joint use of fine screening and magnetic gravity separation. The increase in the efficiency of the gravitational cycle for the hematite concentrate production was achiev...

The main reason for applying microclimate control in greenhouses is to achieve optimal growing environment. Because of its complexity, excessive control in greenhouses can adversely affect the cultivation of crops. Moreover, we have optimum control to achieve these challenging goals, including lower emissions and reduced production costs. The most important stage in the research of algorithms of management of technological objects is to develop a model of the object, which reflects the processes occurring in the o...

Based on lithological and geophysical logging data obtained from shallow and deep boreholes drilled in the Republic of Moldova, Ukraine and Romania, it has been possible to map out the distribution of Ediacaran deposits across the south-western part of the East-European Platform. The Ediacaran sedimentary strata extend throughout the studied territory. Complete sections generally have a thickness of between 400 and 500 m, with a monoclinal dip of less than 1пїЅ from north-east to south-west towards the Carpathian ...

Polysorbates as hydrophilic surface-active structures are food additives with multifunctional competences (emulsifiers, aerating, wetting, foaming, stabilizing agents) and wide HLB range. The present paper has proposed to know the details of the successive transesterification of 2,5 пїЅ diacetyl пїЅ isosorbide (2,5- Ac2ISB) with hydrocarbon chains (Ra) by successive introducing the different amounts of fatty acids obtained from the vegetal lipid fractions isolated from sweet pepper (Capsicum annuum) and chilli pep...

This article is the continuation of the paper published at the conference SGEM in 2016. European product standards generally do not specify the qualitative requirements for individual product characteristics. EN 14695:2010, which deals with the waterproofing of concrete bridge decks, is not an exception. The national standard CSN 736242:2010 sets quality requirements for bitumen sheets. The type of the modification of bitumen coating is not considered in quality requirements of this standard - the mass modified by...

Sulphur is one of the major constituents of lignite. In addition, it is used to measure the negative environmental impacts of this raw material. The presented study included field work and laboratory work. Field work was aimed at collecting coal samples, which were subjected to a series of laboratory tests. In total, about 150 coal samples were collected and used for proximate analysis. In addition, a large database of archival results from mines and scientific literature was collected. Overall, more than 4000 coa...

Aerogels production consists of two main stages: preparation of the gel filled with solvent (alcohols, acetone or hexane) by polymerization or sol-gel process and its supercritical drying. The most energy consuming and complicated from a technical point of view is the drying step [1]. Supercritical drying allows keeping the internal structure by preventing collapse of pores. Supercritical conditions require the use of expensive highpressure apparatus and the process rate is limited by diffusion within the pores of...

This paper is oriented in the supervision of of the major earth movements, particularly in storehouses of explosives, for a beter orientation and safety during their supervision in earth. In Kosovo we have started a supervision of storehouses of explosives by using a global system of positioning GPS. We have put this system in function in Independent Commission for Mines and Minerals (ICMM), which has facilitated and ensured an accurate monitoring if internal movements in some strategic objects for the needs of Ko...

CTC (Communication Train Control) system it is known as integrated intelligent control systems for rail systems including mainline railways, light rails and underground lines in cities. With the development of modern data communication, computer and control techniques, CTC represents the future direction of rail control systems. At present, CTC has been used in one Kosovo railway line. Train control system in the Kosovo railway network, in the main line is installed which enables direction and control of trainпїЅs...

Today energy consumption in the world is constantly increasing and therefore using energy more effectively and reduce energy consumption has been discussed a lot more. Nowadays, trend of stimulating renewable energy production is at the forefront. In this regard, in Slovakia use of renewable energy sources for home electricity and heat generation following European Union support and the project Green to Households is developed considerably. The return on investment on these funds is indeed longer, but we should ta...

Critical literature studies indicated that there had been numerous methods for estimating the value, management models as well as indicators and criteria for the quantitative and qualitative assessment of post-industrial areas. All of them supported post-industrial area management, but neither of them took into account the simultaneous evaluation of economic, social and environmental aspects - especially important for the inclusion of these areas into the socio-economic cycle. Identified gaps in knowledge allowed ...

The assessment of antiseptic solutionsпїЅ efficacy for root canal irrigation in terms of dentinal tubules disinfection is a challenging task. The samples used for this purpose should be standardized according to bacterial counts and the depth of their penetration inside dentinal tubules. However, the samples could be contaminated with bacteria from the surface of dentin during the sample acquisition. The treatment of dentin surface with antiseptic solutions will allow to avoid this contamination and thus to assess...

In the paper there is the analysis of the possibility of the replacement of onerous methods of surface treatment before adhesive bonding. In ecology approach adhesive bonding is not preferred techniques of joying parts. The joints are no separable, but nonetheless have wide range of usage. The adhesive bonding has many assets, like low mass of the joining elements (less material), possibility of joint of different materials, lack of rivets or screws (less weight). But typical preparatory operations in adhesive bon...

In this paper we present the results of an analysis of 15 years of continuous GNSS/GPS measurements in Romania. The purpose of this work is threefold: monitoring of crustal changes occurring in the Romanian territory in correlation with tectonic processes in South-East Europe (Africa-Europe plate interaction), observation of crustal movements in order to establish the surface-to-depth relationship of deep earthquakes in the area of the Eastern Carpathians bend zone (Vrancea region) and improving the accuracy of th...

Survey sketch is a technical base for legal matters and base for changes cadastral operates. Sketch provides a system where individual digital and analog elements are interconnected through distinct indicators employing principles of modern relational database. The current state analysis of making of survey sketches indicates several technological inconsistencies. The goal this paper is to propose a comprehensive system which combines relational connections between analog and digital parts of survey sketches with ...

The aim of present research refers to identifying how the population influences the development of services of general interest. Among the methods that were used for research are found: bibliographic study, field research, application of questionnaires, obtained data interpretation after questionning and comparing them with the existing data base on statistical county. The attempt to clarify how the requirements of human society takes a historical constant, analyzing these requirements closely linked to the evolut...

Cultural tourism, an important component of sustainable tourism, has gained national and international recognition in recent years. Turkey, with its geographic and cultural heritage, universal cultural and natural values, and rich opportunities for visitors, has great potential for growth in cultural tourism. However, although cultural heritage is an important part of sustainable tourism, it also brings about the problem of how best to preserve cultural heritage. Vernacular, houses, which are a part of this herita...

The aim of the research and analyses was to present the design process of industrial facilities, that takes into account their impact on the existing environment in order to limit the impact of the designed facility on the landscape. Industrial architecture work is usually carried out without taking the surrounding landscape into consideration. The proper analyses of the land for investment and its surroundings allows to develop a design strategy. Appropriate arrangement of isolating greenery allows to create natu...

"Sustainability" is a key term, not only when we talk about пїЅeco buildingsпїЅ, but also when we talk about lifestyle and development in general. Widespread awareness of climate change, pollution, depletion of natural resources together with huge amount of technical opportunities on global market have triggered professional demands for architects with advanced skills in design. Present task is not only to create new technical variations, but to re-think architectural design process to find a really complex evalua...

Beginning with the statement of the World Conference on Environment and Sustainable Development from Rio de Janeiro (1992), the worldпїЅs countries have started to develop national policies for implementing the concept of sustainable development. The experiences of those years led to a more pragmatic approach of the sustainable development implementing policies. For the first time the European Union and United Nations also realized that without a qualitative and quantitative quantification of the objectives of sus...

Current development in the European Union countries may be considered heterogeneous, even though their economic and social similarities. Each country achieves its economic and social goals with different success rate. It is similarly in relation to the complex value such as sustainable development. Evaluation of sustainability and sustainable development is problematic, because of sustainable development (resp. part of it) can be evaluated using the various indicators. It is, for example, the evaluation of sustain...

Mobility, besides housing and food/drinks, is considered one of the main consumption clusters with high impact on environment that includes pollution (i.e. noise), energy consumption and climate changes. Sustainable mobility therefore should be the task high on the agenda for the municipal development governance and, especially, environmental governance, particularly, keeping sustainability principle - to have the ability of people to travel and supply goods in a way that balances environmental and socio-economic ...

The urgency of sustainable development in the world requires seeking solutions to chronic problems of a number of the past decades. Several of the problems are associated with the environment and food supply. The current food supply system was based on conventional farming, yet such food was produced making negative environmental impacts. Organic primary food production is an alternative to the system, which is based on organic farms, the number of and the land area managed by which have considerably increased. In...