RIULS

Repository of Iasi University of Life Sciences, ROMANIA

Welcome to RIULS!

The mission of the University’s institutional repository is to manage, preserve and disseminate, in open access, the academic and institutional output of the university’s academic community. It also aims to promote values and personalities belonging to Romanian agricultural science, by storing digitized versions of rare books and manuscripts from its collections.

The repository is part of the international movement known as open science, which promotes free access to scientific literature. This translates into maximized impact of the work carried out by researchers, contribution to improving access to knowledge, increased visibility of the institution through the works of its authors and improvement of its search engine ranking.

All documents deposited in the repository receive a unique and persistent identifier called a Handle, thus guaranteeing perpetual access to scientific output through permanent links.

RIULS Repository of Iași University of Life Sciences is indexed in Duraspace, OpenDOAR,CORE,Google Scholar,BASE (Bielefeld Academic Search Engine) and ROAR (Registry of Open Access Repositories), global Directories of Open Access Repositories.

Categories in RIULS

Select a category to browse its collections.

Now showing 1 - 3 of 3

Colecții speciale - Ad Gloria Agris / Special Collections-Ad Gloria Agris 141
Cuprinde cărți și publicații periodice rare ale fondatorilor agriculturii și ai învățământului agricol românesc modern, precum și teze de doctorat din domeniul agricol de la început de secol XX.
Publicații ale Bibliotecii - Librum de libris / Publications of the Library - Librum de libris 13
Contains publications created by the Library’s staff: bibliographies, articles, tutorials, etc.
Publicații științifice ale Universității – AgriScriptum / Scientific Publications of the University - AgriScriptum 6392
Contains documents resulting from scientific research produced or edited by the departments, research institutes and study centres of the University: Doctoral Theses, articles published in ISI journals, articles published in the journals edited by the University, patents, scientific projects, etc.

Recent Submissions

listelement.badge.access-status Open Access ,
Synergistic Influence of Multi-Walled Carbon Nanotubes and Nanosilica Powder on Mechanical Performance of Mortar with Demolished Concrete Waste Aggregate and Polypropylene Fibers Addition Using Taguchi Design of Experiment
(MDPI, 2025-12-05) Lepădatu, Daniel; Judele, Loredana Emanuela; Bucur, Dana-Roxana; Simion, Isabela-Maria; Entuc, Ioana-Sorina; Proaspăt, Eduard; Teodorescu, Răzvan-Ionuț; Kobi, Abdessamad; Garcia-Granda, Santiago
This study investigates the synergistic influence of multi-walled carbon nanotubes (MWC-NTs), nanosilica powder (NSP), and polypropylene fiber waste (PFW) on the mechanical performance of mortar incorporating demolished concrete waste aggregates (DCWA). The replacement of natural aggregates with DCWA typically results in strength reductions and weak interfacial transition zones; therefore, the combined use of nanomaterials and microfibers is proposed as a mitigation strategy. A Taguchi Design of Experiments (DOE) approach was employed to optimize mix parameters, including MWCNT dosage, NSP content, PFW volume fraction, and DCWA replacement level. Mortar mixtures were prepared with MWCNTs (0–0.1% by binder weight), NSP (0–2% by binder weight), PFW (0–0.3% by volume), and DCWA (0–20% replacement of fine sand). Mechanical performance was assessed through compressive and flexural strength tests. A combined statistical approach using the Pareto chart and ANOVA identified the most influential parameters and their respective contributions to the response variable. The innovative aspect of this research lies in the synergistic integration of MWCNTs, NSP, demolished concrete waste, and polypropylene fiber waste within the mortar matrix, with the incorporation of nanomaterials specifically intended to compensate for the strength reduction typically induced by the use of demolition concrete waste aggregates. Although a potential nano-scale synergy between MWCNTs and NSP was initially considered, the experimental results indicated that the most relevant synergistic effects occurred among broader mix parameters rather than specifically between the two nanomaterials. Even so, when assessed individually, both nanomaterials contributed to improving the mechanical characteristics of the mortar—particularly nanosilica, which demonstrated a more pronounced effect—yet these individual enhancements did not translate into a distinct synergistic interaction between MWCNTs and NSP. The Taguchi DOE proved to be an efficient tool for multiple factor analysis, enabling reliable identification of the most influential parameters with a minimum number of tests. Its application facilitated the development of mortar mixtures that effectively integrate demolition waste while achieving enhanced mechanical performance through nano- and micro-scale reinforcement.
listelement.badge.access-status Open Access ,
Assessment of Blood Parameters in Free-Ranging Red Deer (Cervus elaphus) from the Eastern Carpathians Between Autumn and Early Winter
(MDPI, 2025-09-19) Lazăr, Mircea; Radu-Rusu, Răzvan Mihail; Acornicesei, Ioana; Lazăr, Roxana
Understanding physiological variability in wild ungulates is essential for ecological monitoring and sustainable wildlife management. This study aimed to examine whether sex and season (autumn vs. early winter) significantly influence hematological and biochemical parameters in free-ranging red deer (Cervus elaphus) from the Eastern Carpathians, Romania. A total of 40 legally harvested adult individuals (20 males, 20 females) were included, and blood samples were collected post-mortem under standardized conditions to minimize pre-analytical variability. Hematological parameters (WBC, RBC, HGB, HCT, PLTs) and serum biochemical markers (glucose, urea, total cholesterol, triglycerides, total protein) were analyzed using automated veterinary analyzers. Statistically significant sex-related differences were found in hematocrit during autumn and hemoglobin concentration during winter, with higher values in males. Seasonal variation within sex groups was not significant but indicated a physiological trend toward hemoconcentration in winter. Biochemical values remained within reference ranges and showed no significant differences across groups. Pearson’s correlation analysis revealed a strong association between hematocrit and urea, and moderate correlations were observed between WBC and glucose, suggesting links between oxygen transport, protein metabolism, and energy balance. Environmental factors such as reduced food availability and temperature shifts during winter likely contribute to these physiological adjustments. These results provide baseline data for the physiological assessment of red deer populations and support the development of ecological health indicators in wildlife monitoring programs. Future studies incorporating hormonal and immunological biomarkers across multiple seasons are encouraged to further understand adaptive responses in cervids.
listelement.badge.access-status Open Access ,
Research on incubation index of the eggs provided by gray Guinea fowl Numida meleagris
(“Ion Ionescu de la Brad” University of Agricultural Sciences and Veterinary Medicine, Iaşi, 2020) Teodorescu, Alina; Atudosiei, Gabriela; Roşca, D.C.; Radu-Rusu, Răzvan-Mihail; Usturoi, Marius-Giorgi
Nowadays, the prevention of diseases through a healthy diet for modern society is becoming a matter of major interest, from a socially, economically and politically point of view. In this context, the objective of the research was to evaluate the incubation index recorded by eggs provided by gray guinea fowl, reared in both extensive and intensive system. A number of features were investigated regarding the clarity of the eggs, the percentage of fertility, the number of eggs with dead embryos, the percentage of hatching. The data regarding the clarity of the eggs show us for the extensive system values between 24.39% (batch 2) and 29.97% (batch 3), and for the intensive system the values were in the range 9.76-14.63 %. Regarding the fertility of the analyzed eggs, it exceeded the threshold of 70% in all batches from the extensive system; for intensive system eggs, fertility was over 85%. The highest embryonic mortality was recorded in batch 1 (24%), and the lowest in batches 4 and 5 (15%). Regarding the hatching of eggs, the results recorded ranged around 65% for the extensive system and 80% for the intensive system. The hatchery percentage shows us for the extensive system values between 43.90% (batch 3) and 51.22% (batch 2). The intensive system was highlighted with much higher values, more precisely batch 4 with a hatching percentage of 73.17%, batch 5 with a percentage of 70.73%, and batch 6 with a value of 70.73% Guinea fowl eggs have a number of very valuable biological properties, so the extensive exploitation of these birds can have great prospects for development.
listelement.badge.access-status Open Access ,
Assessing Honey Quality: A Focus on Some Physicochemical Parameters of Honey from Iasi County (Romania)
(MDPI, 2025-02-03) Albu, Aida; Bora, Florin Dumitru; Cucu-Man, Simona-Maria; Stoleru, Vasile; Nistor, Cătălin-Emilian; Brumă, Ioan Sebastian; Rusu, Oana-Raluca
The study of honey in Iasi County reveals its ecological, economic and health importance, emphasizing its unique properties, role in biodiversity and value in promoting sustainable beekeeping and regional identity. This study aimed to investigate the characteristics of honey from Iasi County, Romania, analyzing 27 samples collected in 2020 and 2021. The samples include tilia (8 raw, 7 commercial), acacia (2 raw, 2 commercial), rapeseed (3 raw), sunflower (3 raw) and lavender (2 raw) honey. Analyses were carried out under Romanian/EU standards, assessing parameters such as color, electrical conductivity, moisture, total soluble solids (TSS), acidity (free, lactone, total), pH, hydroxymethylfurfural (HMF), ash and mineral composition (Na, K, Ca, Mg, Cu, Zn, Mn and Fe). The results revealed significant differences between raw and commercial honeys. Notably, in commercial tilia honey, higher values were found for color (38.58 mm Pfund vs. 24.14 mm Pfund), total acidity (25.93 meq·kg−1 vs. 17.36 meq·kg−1) and HMF levels (8.84 mg·kg−1 vs. 3.68 mg·kg−1). Conversely, water-insoluble solids (0.08% vs. 0.15%) and ash content (0.21% vs. 0.30%) were lower in commercial samples. Potassium was the most abundant mineral detected, while copper and zinc levels were the lowest. Significant correlations were observed between several parameters, including ash with electrical conductivity and HMF with acidity. This study underscores the impact of processing on honey quality and highlights the importance of understanding honey composition for consumers and producers alike.
listelement.badge.access-status Open Access ,
Studies on the influence of environmental temperatures in laying chicken halls on productive performance
(“Ion Ionescu de la Brad” University of Agricultural Sciences and Veterinary Medicine, Iaşi, 2020) Usturoi, Marius-Giorgi
Research has focused on how the ambient temperatures ensured during the breeding of laying hens influence their productive performance.. To this end, two batches of birds of equal size (17280 Lohmann Brown hens / batch) were set up in two breeding halls, one of which had no additional thermal insulation (batch A) and a barn with an external heating system (batch B). At the end of the 51 weeks of operation, the birds in group B (thermally insulated hall) had a body weight 0.28% higher, an individual egg production better 1.46% and an average egg intensity higher 1.97% compared to hens accommodated in the hall without additional thermal insulation (batch A). Also in the chickens from batch B (thermally insulated hall) there were lower levels for the rate of exits from the herd (with 0.51%), the average daily consumption of compound feeds (by 0.73%) and the feed conversion index (with 2.23%). In conclusion, it can be stated that the application of additional construction elements on the walls of the halls used for growing laying hybrids (thermosystem) allows the achievement of adequate and constant ambient temperatures, which translates into an improvement in productive performance.