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PRIMA PAGINĂ ECOTERRA NUMĂRUL 9(30)/2012


Ecoterra, no. 30, pp. 1-7, 2012
ECOLOGICALLY AND ECONOMICALLY EFFICIENT STRATEGY OF WASTEWATER TREATMENT
STRATEGII ECOLOGICE SI ECONOMICE EFICIENTE IN TRATAREA APELOR UYATE

Victor COVALIOV, Valentin BOBEICA, Olga COVALIOVA, Vladimir NENNO
State University of Moldova, Department of Chemistry and Chemical Technology,Department of Industrial and Ecological Chemistry, Chishinau, Republic of Moldova
Dumitru UNGUREANU
Technical University of Moldova, Chishinau, Republic of Moldova
Irina SENICOVSKAYA
Institute of Pedology, Agrochemistry and Soil Protection “Nicolae Dimo”, Chishinau, Republic of Moldova

A strategy of winery and distillery waste water treatment is proposed, having the ecologic and economic effect, based on application and intensification of anaerobic fermentation of organic substrate in waste water, with biogas production as energetic agent with high contents in methane. The technology applied combines the following processes: additive of exogenous hydrogen to ensure the most complete transformation in methane of carbon dioxide, forming on the acetogenic stage of anaerobic fermentation, introduction of supplementary CO2 in bioreactor in mixture with hydrogen, acceleration of methanogenesis with biochemical stimulants, introducing of additives to enhance the contents in vitamin B12 in fermentation sludge.


Ecoterra, no. 30, pp. 8-16, 2012
THE CITIZENS’ PERCEPTION ON GLOBAL, NATIONAL AND LOCAL ENVIRONMENTAL PROBLEMS (CASE STUDY: CLUJ-NAPOCA MUNICIPALITY)
PERCEPŢIA CETĂŢENILOR PRIVIND PROBLEMELE DE MEDIU GLOBALE, NAŢIONALE ŞI LOCALE (STUDIU DE CAZ: MUNICIPIUL CLUJ-NAPOCA)

Octavian-Liviu MUNTEAN
Universitatea Babeş-Bolyai din Cluj-Napoca, Facultatea de Ştiinţa şi Ingineria Mediului
Antonia MĂRINCAŞ, Anca DOBREAN
Universitatea Babeş-Bolyai din Cluj-Napoca, Facultatea de Psihologie şi Ştiinţe ale Educaţiei

The aim of this paper is to identify the human perception on environmental issues and the attitude and behaviour of the inhabitants in Cluj-Napoca municipality. We applied a questionnaire with 21 items organised in 3 groups of 7 questions: one group concerns global environmental issues, the second reffers to national issues and the last one tackles local issues. We randomly selected 440 persons and the results were analyzed and interpreted comparatively, based on the graphs in SPSS program. The present study is only a beginning in this field and a more important research involving both the environmentalists and the experts in Psychology, Sociology, and Geography will be a challenge for us into the next future.


Ecoterra, no. 30, pp. 17-22, 2012
SOME LESS KNOWN MAMMALS FROM ROMANIA
MAMIFERE MAI PUŢIN CUNOSCUTE DIN ROMÂNIA

Claudiu GAVRILOAIE, Cristina RUSU
Colegiul Tehnic INFOEL Bistriţa
Corina BERKESY
S.C. ICPE Bistriţa S.A.
Stelian Valentin STĂNESCU
Universitatea Ecologică din Bucureşti

The mammals are vertebtares with a constant body temperature; most of them give birth to alive youngsters (except the monotremans) which are fed with milk from mammal glands. They are spread on the whole planet, in all the environmentals. In present there are around 4500 mammal species on the Earth; in Romania there are around 100 species. Most from these 100 species from our country are well known, but there are few of them which are known only by some specialists and ordinary people which live in these mammals areas. In the present paper we will briefly discuss about 4 mammals species, less known in our country: Mediterranean monk seal, elk, raccoon dog, and jackal.


Ecoterra, no. 30, pp. 23-27, 2012
SOME RESEARCHES IN SALT MASSIF FROM SăRăţEL (BISTRIţA-NăSăUD COUNTY, ROMANIA)
CERCETĂRI ÎN MASIVUL DE SARE DE LA SĂRĂŢEL (BISTRIŢA-NĂSĂUD, ROMÂNIA)

Cristina RUSU, Claudiu GAVRILOAIE, Radu DAMIAN
Colegiul Tehnic INFOEL Bistriţa

The salt massif is situated near Bistriţa town. It is one of the few places where the salt appears at the soil surface, forming salted springs, salin ponds, salin aflorishments. In this paper we discuss about some physical, chemical and biological characteristics of the salt massif from Sărăţel. The study took place between November 2010 and June 2011.


Ecoterra, no. 30, pp. 28-30, 2012
THE CONTROL OF THE OZONE STERILIZATION EFFICIENCY OF THE ENCLOSURES FOR GRAPES AND WINE STORAGE AND AGING
VERIFICAREA EFICIENŢEI STERILIZĂRII CU OZON A INCINTELOR PENTRU PRELUCRAREA STRUGURILOR ŞI PENTRU DEPOZITAREA ŞI ÎNVECHIREA VINURILOR

Constantin-Nicolae DRĂGĂNESCU, Diana PRUNARU
S.C. Electroputere S.A. Craiova
Ştefania IVAN
S.C. Megainvest S.R.L. Râmnicu Vâlcea

The control technology is based on the standard method of fungi and microorganisms growth and culture medium agar type, which may still exist on the walls of the chambers or vessels, after their last washing with ozonized water. As a novelty, we are proposing a specific recipe of the growth medium that is used.


Ecoterra, no. 30, pp. 31-39, 2012
PLEADING FOR AN ENVIRONMENTAL INFORMATIC CULTURE FORMING NEED
PLEDOARIE PENTRU NECESITATEA FORMĂRII UNEI CULTURI INFORMAŢIONALE ENVIRONMENTALE

Bogdan CIORUŢA
Universitatea Tehnică Cluj-Napoca, Centrul Universitar Nord, Facultatea de Resurse Minerale şi Mediu, Baia Mare
Alin CIORUŢA
Colegiul Naţional „Gheorghe Şincai”, Baia Mare
Mirela COMAN
Universitatea Tehnică Cluj-Napoca, Centrul Universitar Nord, Facultatea de Resurse Minerale şi Mediu, Baia Mare

From many decades, environment has been the source for industrialization and urbanization as a resource. As the population of world is growing rapidly and as its demands for survival, the stress on environment for its resources is also increasing through various reasons whether increase in technology or in energy dependency, international trade or in social and information complexity. For all this there should be something there to manage them properly, help in decision-making, minimize the time consumption etc. The answer seems to be the information technology or informatics - with a large scale computational capability to handle the various sophisticated environmental data and analyze them so that proper decision, particulariyed by the environmental information knowledge, can be made and the management could be done properly.

Recent advances in information technology has made the sustainable development much easier by providing easy search for sustainable development strategies, researches has been made for multiscale data analysis and environmental modeling through multi-dimensional approach. This could facilitate the environmentalists, decision-makers to intimately think for the knowledge and a clear vision of social, ecological, environmental, economic objectives, with an advanced and interdisciplinary approach - environmental informatics.


Ecoterra, no. 30, pp. 40-47, 2012
GEOGEBRA SOFTWARE – A NEW POSSIBILITY FOR STUDYING THE ENVIRONMENTAL PROBLEMATICS?
PROGRAMUL GEOGEBRA - O NOUA POSIBILITATE DE STUDIU A PROBLEMELOR DE MEDIU?

Bogdan CIORUŢA, Mirela COMAN
Universitatea Tehnică Cluj-Napoca, Centrul Universitar Nord, Facultatea de Resurse Minerale şi Mediu
Alin CIORUŢA
Colegiul Naţional „Gheorghe Şincai”, Baia Mare

The era that we live in today can be described as the “Information Age”. No matter what area of science and technology we look at, it is obvious that we are dealing with an ‘information overflow’ without precedent in the history of mankind. Environment Sciences are no exception and recent advances in this field would have been unthinkable, unmanageable and unattainable without the support offered by modern information technology, in the sense of Environment Information Systems or, why not, Environment Informatics.

The aim of the present paper is to introduce you a new kind of Environment Information System, special by its perspective in solving the environment problematic, the math software GeoGebra. Also, the work paper describes the possibilities to implement GeoGebra in the context of complex area defined by environment protection and engineering.
 


Ecoterra, no. 30, pp. 48-59, 2012
COMPARATIVE ANALYSIS OF PHYSICOCHEMICAL PROPERTIES AND SEQUENCE OF DSZA PROTEIN IN SOME MICROORGANISMS THROUGH IN SILICO APPROACH
ANALIZA COMPARATIVA A PROPRIETATILOR FIZICO-CHIMICE SI ALE SECVENTELOR DE PROTEINE DSZA IN CAZUL UNOR MICROORGANISME PRIN ABORDAREA METODEI IN SILICO

Arun KARNWAL, Harmanjit Kaur GOINDI
Bhojia Institute of Life Sciences, Bhud (Baddi), District Solan, India

Total 14 amino acid sequences of DszA protein from different microorganisms (from ExPASy proteomics server) have been collected for in silico studies for their comparative physicochemical analysis. All amino acid sequences have shown more than 70% identity with the reference sequence (Rhodococcus erythropolis, AAP80182.1). Physicochemical studies revealed a significant level of differences between these sequences. At the level of amino acid composition, all the sequences were devoid of Cys amino acid residue as a common component of DszA protein except Mycobacterium sp. G3 and Paenibacillus sp. A11-2. At neutral pH, DszA sequences have shown substrate specificity to aliphatic sulphides due to higher percentage of negatively charged amino acids. In multiple sequence alignment analysis, ClustalW approach checked 112 conserved sites in all sequences; ClustalV showed 119 sites while Jotun hein algorithm has pointed total 121 sites as conserved sites. Jointly all three MSA approaches have presented 72 identical sites in all DszA protein sequences.


Ecoterra, no. 30, pp. 60-63, 2012
CONSIDERATIONS REGARDING THE CLEANING OF WASTEWATERS RESULTED FROM PESTICIDES INDUSTRY
CONSIDERAŢII PRIVIND EPURAREA APELOR UZATE REZULTATE DIN INDUSTRIA PESTICIDELOR

Mărioara ŞANDRU, Daniela IGNAT, Maria SOMEŞAN, Mihaela HETVARY
S.C. ICPE Bistriţa S.A.

The excessive and indiscriminate use of pesticides has made the air, water and soil component of the environment polluted. The pesticides through these sources reach into the plant, enrich and human system. The non-persistent pesticides do not pose any serious problem, but the persistent ores because of their specific nature of being strongly lip phobic tend to accumulate in fat bodies and thus are of great concern. Several studies have indicated presence of pesticide residue in food commodities. The residues find their way in human bodies through consumption of commodities with the higher level of pesticides. Chlorinated insecticides are comparatively more persistent in the nature as compared to other classes of insecticides like organ phosphorus, carbonates and synthetic parathyroid. Most of the pesticides applied ultimately find their way into the soil. It has been estimated that as much as fifty per cent of the pesticides applied to crop foliage reaches soil which find its way into the aquatic system or may get accumulated in plants and crop residues. The persistence of pesticides in soil depends upon a number of factors such as soil type, organic matter content, clay content, the pH, the micro flora and fauna present in the soil.


Ecoterra, no. 30, pp. 64-71, 2012
QUALITY-RELATED ISSUES REGARDING THE BIOMASS MEANT TO HEATING
ASPECTE CALITATIVE CU PRIVIRE LA BIOMASA DESTINATĂ ÎNCĂLZIRII

László BERKESY
Universitatea Babeş-Bolyai din Cluj-Napoca, Facultatea de Ştiinţa şi Imgineria Mediului
Mihaela BEGEA, Corina BERKESY, Mircea CRĂCIUN, Liviu SUCIU
S.C. ICPE Bistriţa S.A.

The biomass represented by such organic matters as wood and the agricultural organic residues is one of the oldest and widest-spread sources of energy. Even nowadays, the biomass and especially the wood-derived biomass constitutes one of the most popular fuels in the world, notably at present, when the price of the fossil fuels keeps on increasing. The wooden waste materials derived from the timber, furniture, pallets and paper obtaining process, represents approximately 50% of the harvested wood material, thus constituting a vast raw stock for producing the wood material used for heating purposes (pellets, briquettes). The producers of the wood heating systems, notably those who manufacture small-sized to medium-sized devices need these fuels that are available on the market for complying with the quality standards according to which the heating plants have been tested and certified. This work lays out quality-related issues linked to the pellets, the briquettes, the wooden chips made from the wood biomass obtained in the forest area of Bistriţa-Năsăud county and from accidental forest products. The results obtained highlighted the high quality of the wood biomass used for heating purposes both in terms of environmental friendliness and of the cost price.


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