RIULS (Repository of Iași University of Life Sciences)
Not a member yet
5043 research outputs found
Sort by
Comparative analysis of ecosystem service delivery between two coastal lagoons in Ghana
No full textThe integration of ES into
global policies represents a significant step
towards harmonising sustainability and
growth and unifying dialogues on
biodiversity and sustainable development to
benefit humanity. Consistent assessment of
the availability of ES is vital to enable
ongoing monitoring and support sustainable
natural resource management and decisionmaking.
This study was conducted to
comparatively analyse the ecosystem service
delivery between two coastal lagoons in
Ghana. The Millennium Ecosystem
Assessment (MEA) and Marine Ecosystem
Services Assessment Tool (MESAT) scales
were used in the study. The paper was based
on the positivist paradigm and employed
inferential statistics with SPSS v23 for data
analysis. The results indicate no statistical
differences between the Fosu and Muni
lagoons in terms of their ecosystem service
delivery; the null hypothesis is accepted for
the two ecosystem service scales used and
confirms that Fosu and the Muni Lagoons
are similar in their deliveries of ecosystem
services. The relationship between ES and
human well-being is complex due to the
interplay between social and ecological
systems. To address coastal issues and
develop management plans, the study
proposes using MESAT and MEA for
evaluation and solution provisioning. It
further recommends expanding stakeholder
and decision-maker involvement in lagoon
management to promote sustainability and
enhance stakeholder participation in
decision-making
The Impact of the Addition of Vitamins on a Silicone Lining Material to the Oral Mucosa Tissue—Evaluation of the Biocompatibility, Hydrolytic Stability and Histopathological Effect
No full textBackground and Objectives: One’s quality of life depends on overall health, and in particular, oral health, which has been and continues to become a public health issue through frequent manifestations in various forms, from simple oral stomatitis (inflammations of the oral cavity) to the complicated oral health pathologies requiring medical interventions and treatments (caries, pulp necrosis and periodontitis). The aim of this study focused on the preparation and evaluation of vitamins (vitamin A, B1 and B6) incorporated into several silicone-based lining materials as a new alternative to therapeutically loaded materials designed as oral cavity lining materials in prosthodontics. Materials and Methods: Silicone-based liners containing vitamins were prepared by mixing them in solution and becoming crosslinked, and then they were characterized using Fourier-transform infrared (FT-IR) spectroscopy to confirm the incorporation of the vitamins into the silicone network; scanning electron microscopy (SEM) to evidence the morphology of the liner materials; dynamic vapor sorption (DVS) to evaluate their internal hydrophobicity, swelling in environments similar to biological fluids and mechanical test to demonstrate tensile strength; MTT to confirm their biocompatibility on normal cell cultures (fibroblast) and mucoadhesivity; and histopathological tests on porcine oral mucosa to highlight their potential utility as soft lining materials with improved efficiency. Results: FT-IR analysis confirmed the structural peculiarities of the prepared lining materials and the successful incorporation of vitamins into the silicone matrix. The surface roughness of the materials was lower than 0.2 μm, while in cross-section, the lining materials showed a compact morphology. It was found that the presence of vitamins induced a decrease in the main mechanical parameters (strength and elongation at break, Young’s modulus) and hydrophobicity, which varied from one vitamin to another. A swelling degree higher than 8% was found in PBS 6.8 (artificial saliva) and water. Hydrolytic stability studies in an artificial saliva medium showed the release of low concentrations of silicone and vitamin fragments in the first 24 h, which increased the swelling behavior of the materials, diffusion and solubility of the vitamins. The microscopic images of fibroblast cells incubated with vitamin liners revealed very good biocompatibility. Also, the silicone liners incorporating the vitamins showed good mucoadhesive properties. The appearance of some pathological disorders with autolysis processes was more pronounced in the case of vitamin A liners. Conclusions: The addition of the vitamins was shown to have a beneficial effect that was mainly manifested as increased biocompatibility, hydrolytic stability and mucoadhesiveness with the mucosa of the oral cavity and less of an effect on the mechanical strength. The obtained lining materials showed good resistance in simulated biological media but caused a pronounced autolysis phenomenon, as revealed by histopathological examination, showing that these materials may have broad implications in the treatment of oral diseases
The use of some exometabolites from micromycetes for the fortification of resistance indices in bee
Get PDFThe goal of the proposed research was focused on the use of exometabolites of micromycetes to increase the
physiological resistance of bee families after the winter period, as well as to stimulate their productive indices. From
the 21 strains of micromycetes taken from the National Collection of Nonpathogenic Microorganisms of the Institute of
Microbiology and Biotechnology, TUM, were selected 3 strains (Ps.sp.11, Ps.sp.19 and Ps.sp.62) which showed more
productive indices of the development on culture media, as well as more pronounced bactericid properties.
Exometabolites were prepared from the mentioned strains and administered to 3 experimental grups of bee familes in
doses of 10, 25 and 50 ml per kg of wheat flour cakes. The productive indices of the bee families were examined over
12, 24 and 36 days after the administration of the biomass of exometabolites. As a result, it was established that the
highest index - 47.1 squares of hatched brood, was registered at 24 days after the administration in the 1st experimental
group of bees which was fed with a dose of 25ml/kg of wheat flour cakes. The difference between this group and the
control group was 19.4 squares of hatched brood. At the same time, the honey collection per beech was 3.4 kg in the 1st
experimental group of bees, representing 0.8 kg more compared to the control group and the prolificacy index was
34.5% higher compared to the control group
Research on the agrobiological and technological potential of grapevine varieties for white wines created at the Research-Development Station for Viticulture and Vinification Odobesti
No full textInfluenţa densităţii şi a limitării numărului de frcute asupra cantităţii şi calităţii seminţelor la pătlăgelele vinete
Get PDFThe present work aims to evaluate the influence of different planting schemes and the limiting of the number of fruits on the quantity and quality of eggplant seeds. The cultivar Luiza used in this experiment was planted at densities of 30.000, 35.000 and 40.000 plants per hectare. In these, the number of fruits was limited to three, four or five fruits per plant.
The use of lower densities leads to a higher percentage of germinated seeds. However, the use of higher densities can lead to higher seed quantities. The results indicate that limiting the number of fruits has a positive effect on the mass of seeds in one fruit and the mass of 1000 seeds, regardless of plant density. The seed production per hectare was less influenced by the limitation of the number of fruits, by the compensation due to the densities used in the experimental variants. Seed vigor index was influenced by density rather than fruit number
Hoof woodpecker at coronary band and hoof wall level in forestry environement working horses
Get PDFHoof woodpeckers or penetrating foreign bodies in the hoof are frequently found in working horses. A special
pathology is encountered in horses that work in forestry environment. Unlike the metalic foreing body (so called
clou de rue) that just penetrate the sole, the wood goes in by hammering (by sudden pressure). Movement between
the hoof and the 3rd phalanx causes the foreign body to advance in depth.
The study was carried out on a number of 54 working horses in the forestry environment, males, aged between 4 and
14 years. The diagnosis was established on the basis of the clinical examination and the history, the radiological
examination being inconclusive.
As a particularity, the fragmentation of wooden foreign bodies does not occur at the time of extraction but at the time
of hammering through the hard tissues due to the forces that determine the change of the penetration trajectory.
Restraint was achieved by physical and chemical means (sedation and anesthesia). The wound was cleaned and then
the hole in the hoof wall was widened with the help of the hoof knife. The foreign body was extracted using a thick
forceps or a dental extraction forceps.
The dressing was changed every 48h until healing. The wound had been washed with potassium permanganate
solution (KMnO4) or betadine 10%
Characterisation of quality parameters and nutritional value of nutria meat (Myocastor coypus)
No full textThe influence of climatic conditions on the occurrence of large forest fires: a case study of Stara Planina Nature Park in 2007 and 2019
No full textThis work investigates the
relationship between the occurrence of large
forest fires (more than 1,000 ha) and
meteorological data. Specifically, it analyzes
the characteristics of large forest fires in July
2007 (2,500 ha) and October 2019 (2,108 ha)
in Serbia’s Stara Planina Nature Park (NP).
The results show that at these times, forest
fires occurred during long heatwaves with
low relative humidity and high air
temperature. Dry climatic conditions in the
preceding months also contributed to the
occurrence of large forest fires, alongside the
presence of wind. The study uses climate
indices based on the combination of air
temperature and precipitation. Forest drought
index (FAI) data show that 2007 and 2019
were drier than the 1961–1990 climate
period. According to the Lang Precipitation
Factor Index (AILang), the periods June–July
2007 and July–October 2019 can be
classified as dry. The De Martonne Drought
Index (ImDM) shows that July 2007 and
October 2019 had the characteristic of
areism. These were also the periods when
large wildfires were recorded. The results of
this study could be used for wildfire risk
assessment in protected areas and for fire
prevention and suppression planning
The immune response in canine and human leishmaniasis and how this influences the diagnosis- a review and assessment of recent research
No full textLeishmaniasis is a widespread but still underdiagnosed parasitic disease that affects both humans and animals. There are at least 20 pathogenic species of Leishmania, most of them being zoonotic. The diagnosis of leishmaniasis remains a major challenge, with an important role being played by the species of parasites involved, the genetic background, the immunocompetence of the host. This paper brings to the fore the sensitivity of the balance in canine and human leishmaniasis and addresses the importance of the host’s immune response in establishing a correct diagnosis, especially in certain cases of asymptomatic leishmaniasis, or in the situation the host is immunosuppressed or acquired leishmaniasis through vertical transmission. The methods considered as a reference in the diagnosis of leishmaniasis no longer present certainty, the diagnosis being influenced mostly by the immune response of the host, which differs according to the presence of other associated diseases or even according to the breed in dogs. Consequently, the diagnosis and surveillance of leishmaniasis cases remains an open topic, requiring new diagnostic methods adapted to the immunological state of the host
Assessment of the spoilage microflora in swine and broiler carcasses
Get PDFThe microbial load is of major importance in terms of the quality, sanity, and freshness of the meat. The aim of our
study was to perform a microbial risk assessment at warm and chilled swine and broilers carcasses represented by the
psychrotrophic bacteria. The research material was represented by swine and broiler carcasses collected in past years.
The results showed a variation in swine and broilers microbiological carcasses. The point of interest was based on the
microorganisms presented in both species. Microbial load from the surface of carcasses is significantly influenced by
the temperature in the chilling room of the slaughterhouse, if the temperature is inadequate, the microbial load is
significantly higher