RIULS (Repository of Iași University of Life Sciences)
Not a member yet
5043 research outputs found
Sort by
Environmental impact assessment of biodiesel production from soybean
No full textIn this study the environmental impacts of biodiesel production from soybean were determined by using life cycle
assessment (LCA) methodology. In order to achieve this objective all four LCA stages (goal setting, life cycle
inventory, impact assessment and interpretation) were followed. The system boundaries included: cultivation, transport,
crushing and extraction, soy oil refining and biodiesel production. The functional unit considered in this study is 1000
kg of biodiesel. All the inputs and outputs for each process included in the biodiesel production system were collected,
calculated and estimated in the inventory phase. Environmental impact assessment step was performed considering
LCA methods such as: CML 2001, CML 96, EDIP 2003 and ReCiPe. The impact categories selected for this evaluation
were: global warming potential (GWP), acidification potential (AP), eutrophication potential (EP), human toxicity
potential (HTP), photochemical ozone creation potential (POCP), agricultural land occupation (ALO); climate change
ecosystems (CCE); climate change human health (CCHh); fossil depletion (FD); particulate matter formation (PMF)
etc. Results showed that negative values were obtained for GWP, EP, CCE, CCHh indicators which means positive
impacts of biodiesel production on the environment while the others impact categories have positive low levels
respectively negative environmental impacts. Overall the greenhouse gases (GHG) are emitted from combustion of fuel
used; the diesel used for soybean transportation also contributes to GHG emissions; the transesterification process
significantly contributes to the emissions of these gases
Studies and researches concerning the jointing of real estate cadastre with utility network
No full textThe paper aims at developing a GIS model that includes information on the real estate cadastre (in the case of
agricultural areas) supplemented with data from the cadastre of water supply systems. GIS models present a wideranging application of water supply and sewerage monitoring. The paper presents an analysis for water main
transmission. It crosses its way from captation to reservoir, private property and public property. The water main
pipeline requires investigative, annual repairs, rehabilitation and modernization interventions over long periods of time.
In order to carry out the intervention works it is necessary to ensure the access to the site. The paper deals with the
problem of the location of the conduits and there are signalized special situations on the water main transmission
Timisesti - Iasi. Access to private properties may be restricted by owners. Through the GIS monitoring model and in
collaboration with other analysis programs (Autocad, ArcMap), there were identified particular situations encountered
on the two water main transmission pipeline. These situations can be solved through various technical and legal
procedures. One process is the creation of an expropriation corrido
Unele particularităţi bioecologice şi lupta împotriva principalelor speciii dăunătoare în cultura de mazăre
No full textIncreased productivity of pea crops is only possible through the use of intensive technologies, which involve the cultivation of potentially high yielding varieties and hybrids with increased resistance to harmful organisms, the improvement of integrated plant protection systems capable of providing large and stable crops. Integrated pest control requires the use of all prevention and prophylaxis, which involves rotation of crops, the use of healthy seeds, the correct application of soil work, the observance of the seasons and the depth of sowing, plant desiccation, weed control. A special place in the integrated protection system for canned peasis chemical products, the use of which is often inevitable
Influenţa vermicompostului asupra producerii răsadurilor de Ocimum basilicum L.
No full textIn the current paper are presented the results obtained regarding the influence of vermicompost on production of basil seedlings, Ocimum basilicum L. Research took place at UASVMIaşi, Romania, in 2018. Experiences were organized in four variants represented by participation rate of vermicompost in substrate together with garden soil, respectively 0% (V1), 10% (V2), 20% (V3) and30 % (V4). Seedlings with the best quality were obtained at a rate of 30% vermicompost in substrate(V4)
A scientific note on the evolutionary relationships between honey bees and their enemies
No full textHoney bees are used in
intensive way in agriculture due to their
vital role in pollination of crops. Moreover,
there are many valuable products from the
bee colonies. Unfortunately, there are many
enemies to honey bees. These enemies
belong to various taxonomic ranks,
including birds, insects and mites. Serious
damages can be caused to honey bee
colonies by these enemies. The
sophisticated evolutionary relationships
between honey bees and their enemies are
not well investigated. In this study,
phylogenetic trees between honey bees and
their enemies were constructed based on the
mtDNA and the COX1. The constructed
trees reflected the evolutionary relationships
according to behavior and taxonomical
characters based on mtDNA and COX1,
respectively. Predators, cavity-nesting bees,
and parasites were separated than each other
based on the first 1000 bases of the mtDNA.
Insects were separated than mites and birds,
in line with the classification of each
organism based on the COX1
Particularities of the communicative network within major semiosic non-verbal constructions
No full textSpecialized literature differentiates a wide variety of communication forms, based on the diversity of their criteria of classification. Starting from the statement that biosemiotics - a relatively new science situated between biology and semiotics that studies the prelinguistic meaning-making, communication, production and interpretation of signs and
codes in the biological realm - the author, using a biosemiotic approach, aims to point out the complexity of the communicative network in the garden space, which is considered by biosemioticians as major semiosic non-verbal construction, representing a place of convergence between semiosis, that is any form of activity, conduct, or process of
communication that involves signs, and which are present within plant kingdom and human intentional activities as well. Communicative processes of the garden are performed by a wide range of mechanisms and signs: iconic, indexical, conventional/symbolic or artefacts and the constitutive elements of any garden – be they natural or artificial,
are involved more or less in this communicative network. Thus, we may differentiate two main levels in the communication precesses, starting from biological communication up to cultural symbolism. The author comes to the conclusion that the garden, being a cultural phenomenon designed by humans to induce certain feelings, is suited for an
interdisciplinary research and a combined semiotic approach, the communicative network within major semiosic nonverbal constructions being very complex
Assessment of vitamin B12 and vitamin C supplementation in dogs with anemia
No full textThe study was performed over a period of 2 months on 21 dogs suffering of mild to moderate anemia. They
were divided in 3 study groups according to their treatment, consisting of 7 individuals each and were administered
either vitamin C (group 1), B12 (group 2) or both (group 3). The reassessment was performed 1 week after. Four of 7
dogs in group 1 had normal values for packed cell volume, hemoglobin or red blood cells, 5 dogs from group 2 had
better results for the same parameters, while all group 3 dogs had normal values after one week. While B12 stimulates
the synthesys of nuclear compounds, facilitating normal cell maturation, vitamin C helps in Fe2+ absorption process and
also acts as an reducing agent of folate coenzymes. The study demonstrates that concurrent administration of both B12
and vitamin C has a benefic effect on individuals with mild or moderate anemia
Agroeconomic value of fine-leaf vetch, Vicia tenuifolia, under the conditions of the Republic of Moldova
No full textFabaceae species play a key role in ecosystem functioning through their capacity to fix atmospheric nitrogen and
mobilize phosphorus, produce food rich in nitrogenous compounds, improve forage quality and performance in animal
production, besides, they have valuable medicinal properties and can be used for multiple purposes in biorefineries. The
local ecotype of fine-leaf vetch, Vicia tenuifolia, maintained in monoculture, served as object of study. The 3-year-old Vicia
tenuifolia started vegetating in the second half of March; the plants had high growth and development rates. In the middle of
May, fine-leaf vetch plants bloomed and the shoots were up to 100 cm long, the fresh mass yield reached 4.18 kg/m2
, with
higher proportion of leaves (58 %) in comparison with alfalfa, Medicago sativa. The results of the study on the biochemical
composition of the dry matter in the harvested fresh mass and hay prepared from Vicia tenuifolia: 23.50 % and 21.94 % raw
protein, 3.65 % and 1.49 % raw fats, 29.08% and 31.78 % raw cellulose, 37.56 % and 36.71 % nitrogen-free extract,
8.10 % and 8.08 % ash. The nutritional and energy value of Vicia tenuifolia forage: 100 kg fresh mass reached 17.93
nutritive units, 3.45 kg digestible protein and 189.51 MJ metabolizable energy, but 100 kg of hay had 75.9 nutritive units,
14.32 kg digestible protein and 827 MJ metabolizable energy, respectively. The gas-producing potential of fermentable
organic matter of Vicia tenuifolia reached 503 L/kg or 284 L/kg methane yields in green mass substrate and 422 L/kg or
235 L/kg methane yields in hay substrate, exceeding Medicago sativa substrates
Brevet de invenție: Aparat și procedeu pentru determinarea apei
No full textInvenția se referă la un procedeu și la un aparat automat pentru determinarea apei existente în materiale lichide, pulverulente, sau solide
Rezultate preliminarii privind germinaţia şi velocitatea seminţelor de mazăre la soiul kelvedon wonder
No full textThe seed is an important factor of production that ensures the biological material necessary for the establishment of agricultural and horticultural crops. The seed of a cultivation will faithfully pass the characteristics determined by the genome if it has a higher cultural value, a primordial value determined by germination, purity and state of health. In the case of seed produced in the year 2016, the germination index varied from 84.0% determined to five days, up to 93.5% (on the ninth day). Germination speed is maximum at first determination (21.0%) and decreases to 8.5% when seed germination has reached the highest value during the 12 days. The velocity coefficient of germination has descended values, the lowest value of 8% registering on day 12, which can be genetically influenced, but also by storage conditions