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 6507
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 ,
Social Media Use, Health Behavior and Body Appreciation Among Romanian University Students
(MDPI, 2026-07-10) Panciuc, Șerban-Laurențiu; Mihăianu, Iustina-Gabriela; Colibaba, Lucia-Cintia; Iorga, Magdalena
Background: In contemporary society, marked by rapid transformations in the sphere of communication and social interaction, social networks have gone beyond the role of simple communication platforms, becoming places where identities are formed, cultural norms are negotiated and self-perceptions are shaped. This reality has generated a growing interest in studying the relationship between the digital environment and health behaviors, especially among young people, a social category extremely receptive to visual and normative influences promoted online. Methods: A cross-sectional study was conducted among students enrolled in different kinds of faculties and specialties. An online questionnaire was distributed to gather socio-demographic, academic and medical data along with lifestyle and health-related behaviors. Several psychometric instruments were used: Health Behaviour Scale (HBS) to measure various dimensions of health-related actions, Bergen Social Media Addiction Scale (BSMAS) to screen for addictive or problematic social media use, Social Media Disorder Scale (SMDS) to measure the problematic social media use among adolescents, Body Appreciation Scale–2 (BAS-2) to evaluate measure of one’s acceptance, favorable opinions and respect of their own body, and Dutch Eating Behavior Questionnaire (DEBQ) to identify the psychological motives behind overeating. Results: More than 70% of students declared that they had their first smartphone before the age of 12 and 65% of students had screentime higher than 3 h per day during the weekdays, with a small increase during the weekends. Women scored higher than men in emotional eating (food consumption in response to negative emotions), and external eating (response to food stimuli in the environment, independent of hunger). Respondents from rural areas showed a significantly lower level of respect and acceptance of their own body and higher risk for Social Media Disorder compared to participants from urban areas. Important statistical correlation has been identified among the variables of the research. Social media addiction was associated with higher emotional eating both directly and indirectly, via lower body appreciation. The analysis also indicated that it does not show a direct relationship with restrictive eating behaviors; rather, its association with restrained eating is fully mediated by the individual’s body appreciation. Conclusions: The use of social platforms is a challenging process, with a great impact on psychological and emotional balance of young people. Even if the study identified a normative use among young people with a high education level, the risks factors should be taken into consideration when dealing with screentime, psychological and mental health and the risk for addiction.
listelement.badge.access-status Open Access ,
Lignin–Sustainable Polymer for Mn(II) Biosorption from Aqueous Media
(MDPI, 2026-06-18) Ungureanu, Elena; Tofănică, Bogdan-Marian; Fortună, Maria E.; Ungureanu, Ovidiu C.; Rotaru, Răzvan; Popa, Valentin I.
In the context of the circular bioeconomy and environmental protection trends, the efficient use of renewable resources has become a driving force for industry, and lignin represents precisely a renewable carbon resource, abundant in terrestrial biomass that could become a sustainable substitute for fossil resources, under conditions of full exploitation. This study systematically evaluates the biosorption of Manganese (Mn(II)) from aqueous media using unmodified Tripidium bengalense (Sarkanda grass) lignin. Under optimal operating conditions (adsorbent dosage of 5 g/L, pH 6.5, and 20 °C), a highly competitive experimental adsorption capacity of 12.52 mg/g was achieved. Kinetic studies revealed exceptionally rapid uptake rates, with thermodynamic equilibrium established within the first 30 min, fitting perfectly with the pseudo-second-order (Ho-McKay) model (R2 ≥ 0.9998). Equilibrium data were best described by the Freundlich isotherm (R2 ≥ 0.9886), confirming chemisorption via preferential inner-sphere complexation on a heterogeneous surface. Thermodynamic analysis verified that the process is spontaneous (ΔG ranging from −13.24 to −26.19 kJ/mol) and endothermic (ΔH from 11.21 to 14.83 kJ/mol). FTIR, SEM-EDX, and TG/DTG analyses confirmed successful Mn–O coordination involving phenolic hydroxyl and carboxylic groups. Furthermore, the lignin showed excellent recyclability, maintaining a retention efficiency over 70% (70.7–85.8%) after three desorption-resorption cycles using 1N HCl. Ecotoxicological validation via Sorghum bicolor L. germination tests confirmed the complete detoxification of the post-adsorption filtrates (up to 100% germination capacity), while the Mn(II)-loaded lignin completely suppressed seed germination (0%), proving secure metal immobilization. These findings establish raw Sarkanda grass lignin as an efficient, scalable, and ecologically sustainable biosorbent for heavy metal remediation.
listelement.badge.access-status Open Access ,
Preliminary Study of the Impact of Zwitterionic Ion-Exchange Resins on the Phenolic and Volatile Profiles of Fetească Neagră and Cabernet Sauvignon Wines
(MDPI, 2026-05-07) Gabur, Georgiana-Diana; Mihai, Marcela; Zaharia, Marius-Mihai; Sánchez-Suárez, Fernando; Muñoz-Castell, Raquel; Peinado, Rafael A.; Teodosiu, Carmen; Cioroiu, Ionel-Bogdan; Gabur, Iulian
Zwitterionic ion-exchange polymers, known for advanced sorption properties, were used in this study to investigate their impact on the phenolic and volatile aroma compounds of Fetească neagră (FN) and Cabernet Sauvignon (CS) wines. Treatments with these compounds showed decreases in total phenolic content from 7.08 to 5.79 g/L gallic acid equivalents (GAE) in CS and from 5.96 to 4.76 g/L GAE in FN, reducing tannins and reactive phenolics and enhancing colloidal stability. Analysis of volatile compounds revealed selective increases in key esters and higher alcohols, contributing to enhanced fruity notes reaching 22.9% in CS and 26.8% in FN, and floral notes reaching 14.9% in CS and 20.4% in FN. Principal component analysis (PCA) showed clear separation by variety (PC1: 54.8%) and treatment (PC2: 30.1%), while heatmap clustering highlighted variety-specific volatile profiles. These results demonstrate that zwitterionic resin treatment represents a novel approach for controlled modulation of wine composition and aroma, enhancing stability and aromatic complexity while preserving varietal typicity.
listelement.badge.access-status Open Access ,
Enhancing Dielectric, Electrical, and Gas Sensing Properties of CaFeO3−δ Through Sintering Temperature Optimization
(MDPI, 2026-03-17) Benatia, Amina; Gouitaa, Najwa; Țurcan, Ina; Gheorghiu, Felicia; Ursu, Laura-Elena; Leontie, Liviu; MitoȘeriu, Liliana; Ahjyaje, Fatima Zahra; Lamcharfi, Taj-dine; Abdi, Farid
This research aims to investigate the modifications of the structural, dielectric, and sensing properties of CaFeO3−δ ceramics produced by solid-state reaction induced by varying sintering temperatures in the range of 1000–1200 °C. A single crystallographic orthorhombic (Pcmn) structure was revealed by X-ray diffraction with Rietveld analysis, both for the powders and sintered ceramics, irrespective of the sintering temperature. The increase in the sintering temperature induces better densification and a larger grain size. Dielectric measurements reveal a pronounced enhancement of the relative permittivity, reaching 2 × 105 at 1 kHz and 330 °C for the sample sintered at 1200 °C/4 h. This composition also displays the highest electrical conductivity, 0.4 S/m at 1 MHz. Cole–Cole analysis indicates a clear deviation from ideal Debye behavior, while the relaxational features of the dielectric permittivity suggest a strong correlation between the dielectric response and Fe-related conduction mechanisms. Gas sensing tests show that the ferrite ceramics exhibit consistent ethanol response trends. The ceramic sintered at 1200 °C/4 h achieved the highest sensitivity, of 56.28%, which can be attributed to its higher density, larger ceramic grains, and reduced low-frequency conductivity. The CaFeO3−δ ceramic sintered at 1200 °C/4 h shows a combination of high permittivity, enhanced conductivity, and strong ethanol sensitivity, making it a promising material for dielectric components, capacitive devices, and gas sensing applications.
listelement.badge.access-status Open Access ,
Biocompatible and Antimicrobial Cellulosic Support via Bioactive Emulsion-Based Film
(MDPI, 2026-04-28) Danila, Angela; Chirilă, Laura; Popescu, Carmen-Mihaela; Voinea, Ionela Cristina; Rîmbu, Cristina-Mihaela; Türkoglu, Gizem Ceylan; Mureșan, Emil-Ioan; Costea, Mariana
Due to biodegradability, functionalization, and sustained release, polymer-based films are widely used in different industries. This study explores a bioactive emulsion-based film obtained using high-methoxy pectin (HMP), Origanum onites L. essential oil, and a hydroalcoholic extract of Thymus vulgaris L., prepared using various emulsion recipes. The emulsions obtained were applied to cellulose supports intended for topical applications. Bioactive textiles were analyzed using SEM-EDS elemental mapping, ATR FT-IR spectroscopy, biocompatibility assessment, antimicrobial activity assays, and analysis of comfort indices. SEM images of textile supports treated with bioactive emulsions confirmed the creation of a film surface and that the homogeneity of the film increases with increasing amount of glycerin, which acts as a plasticizer. Infrared spectra combined with their second derivatives and PCA indicate the presence of oregano essential oil, thyme extract, and pectin on the surface of the cotton. The biocompatibility evaluation of functionalized cotton supports revealed minimal cytotoxic effects on HaCaT human keratinocytes after 24 h of exposure. The results of the analyses showed that bioactive textile supports also exhibit antimicrobial activity. Therefore, the active emulsions with pectin, oregano essential oil, and hydroalcoholic extract of thyme provide biocompatible and antimicrobial active films by applying on cellulosic supports.