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 6475
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 ,
Hybrid Siloxane Materials Based on a Mutually Reactive Epoxy–Amine System: Synthesis, Structure, and Thermal Stability Investigations
(MDPI, 2024-04-17) Fortună, Maria Emiliana; Ignat, Maria; Tudorachi, Niță; Ungureanu, Elena; Rotaru, Răzvan; Harabagiu, Valeria
Hybrid siloxane materials based on a mutually reactive epoxy–amine system are organic-inorganic hybrid materials synthesized via the sol–gel reaction of siloxane precursors, followed by the polymerization of organo-functionalized oligosiloxanes. Therefore, using a new hybrid system as the reaction product resulting from the reaction between 1,3-bis(3-glycidoxypropyl)-l, 1,3,3-tetramethyldisiloxane—C16H34O5Si2—(gp-DS) and p-phenylenediamine—C6H4(NH2)2—(PPD), an aromatic diamine, was obtained. The chemical structure of the synthesized hybrid siloxane material was confirmed via Fourier Transform Infra-Red (FTIR) spectroscopy, mass spectrometry (MS), and 1H-NMR spectroscopy. The morphology and surface chemical composition was highlighted via scanning electron microscopy (SEM) equipped with an EDX elemental analysis system. Further, the thermal stabilities of the prepared hybrid siloxane and its precursors have been investigated via thermogravimetric analysis (TGA), proving the modification of epoxy-functional disiloxanes with a paraphenylenediamine reagent that made it possible to produce hybrid siloxane materials with very good thermal stabilities and dual weak hydrophilic/hydrophobic surfaces.
listelement.badge.access-status Open Access ,
Bioprocess Optimization by Taguchi Design and Response Surface Analysis for Obtaining Active Yeast Used in Vinification
(MDPI, 2024-08-09) Dumitrache, Corina; Ghica, Mihaela Violeta; Frîncu, Mihai; Bărbulescu, Iuliana Diana; Begea, Mihaela; Diguță, Camelia Filofteia; Baniță, Cornel; Cotea, Valeriu V.; Israel-Roming, Florentina; Teodorescu, Răzvan-Ionuț
This study presents the behavior of the identified yeast strain S. cerevisiae, isolated from Busuioacă de Bohotin grapes from the Pietroasa winery, during the process of fermentation to obtain dry active yeast biomass for the winemaking process. In this respect, we promoted an optimization strategy for obtaining active dry yeast biomass. The cultivation conditions for micropilot fermentation (temperature, pH, carbon source, and nitrogen source) were selected and designed according to a Taguchi design with four factors and three levels. Reproducibility testing was conducted under specific fermentation parameters: temperature (32 °C), pH (4.5), carbon source (12%), and nitrogen source (0.7%). Following the optimization process, two combinations of cultivation parameters were selected, and one of them, based on the results, was selected for further analysis. Quantitative data were obtained, showing dry yeast biomass (DCW) at 1.39 g/100 mL and protein content at 45.57%. The active yeast was then used in the winemaking process for Tămâioasă Românească and Busuioacă de Bohotin varieties at Pietroasa winery for validation. This optimization aims to facilitate easy and rapid production of fresh wine yeast tailored to the local winemaking practices of Pietroasa winery, with real application potential in other viticultural areas, aligning with the terroir concept.
listelement.badge.access-status Open Access ,
Optimizing HX-Group Compositions Using C++: A Computational Approach to Dihedral Group Hyperstructures
(MDPI, 2024-11-08) Pătraşcu Sonea, Andromeda; Chiruţă, Ciprian
The HX-groups represent a generalization of the group notion. The Chinese mathematicians Mi Honghai and Li Honxing analyzed this theory. Starting with a group (𝐺,·), they constructed another group (𝒢,∗)⊂𝒫∗(𝐺), where 𝒫∗(𝐺) is the set of non-empty subsets of G. The hypercomposition “∗” is thus defined for any A, B from G, 𝐴∗𝐵={𝑎·𝑏|𝑎∈𝐴,𝑏∈𝐵}. In this article, we consider a particular group, G, to be the dihedral group 𝐷𝑛,𝑛 is a natural number, greater than 3, and we analyze the HX-groups with the dihedral group 𝐷𝑛 as a support. The HX-groups were studied algebraically, but the novelty of this article is that it is a computer analysis of the HX-groups by creating a program in 𝐶++. This code aims to improve the calculation time regarding the composition of the HX-groups. In the first part of the paper, we present some results from the hypergroup theory and HX-groups. We create another hyperstructure formed by reuniting all the HX-groups associated with a dihedral group 𝐷𝑛 as a support for a natural fixed number n. In the second part, we present the 𝐶++ code created in the Microsoft Visual Studio program, and we provide concrete examples of the program’s application. We created this program because the code aims to improve the calculation time regarding the composition of HX-groups.
listelement.badge.access-status Open Access ,
Exploitation of red beet peel powder as a natural food ingredient in whey-fruit based beverage
(Taylor & Francis, 2024-11-13) Stoica, Florina; Rațu, Roxana-Nicoleta; Lipșa, Florin-Daniel; Motrescu, Iuliana; Cara, Irina-Gabriela; Râpeanu, Gabriela; Aprodu, Iuliana; Țopa, Denis-Constantin; Jităreanu, Gerard
Scientists and food producers are studying the potential of utilizing different by-products as highly nutritious food components to meet consumers’ growing demand for healthier and natural goods. Beetroot belongs to the Amaranthaceae family and is highly rich in antioxidants, specifically phenolics and betalains with excellent health properties. The peel of red beetroot, which is generally discarded, has a high concentration of bioactive phytochemicals (betalains, dietary fibers). These compounds are well-known for their strong antioxidant effects, improving cardiovascular health, reducing oxidative stress, and enhancing immunological function. Incorporating red beetroot peel (RBP) powder into whey-fruit-based beverages is a promising method to improve nutritional content and sensory attractiveness. This study investigated the influence of adding RBP to whey-fruit-based beverages, specifically examining its effects on physicochemical and phytochemical characteristics, antioxidant capacity, color, microbiological, and rheological attributes, and consumer preference. The RBP extract exhibited high amounts of total polyphenols (1239.35 ± 0.51 mg GAE/100 g dw) and antioxidant activity (90.02 ± 0.22%). The findings indicated that RBP had a notable impact on the antioxidant capacity (16.38 ± 0.37 μmol TE/g dw for BRBP1, 26.69 ± 0.10 μmol TE/g dw for BRBP3, 36.75 ± 0.31 μmol TE/g dw for BRBP6) of the beverages and enhanced their color without negatively impacting their sensory characteristics. The dynamic oscillatory rheological measurements revealed that beverage supplementation with increasing amounts of RBP obtained stronger networks with solid-like viscoelastic behavior. Using RBP powder as a natural food ingredient in whey-fruit-based beverages enhances their nutritional value and promotes sustainable food processing by making use of by-products from the food industry into innovative food options.
listelement.badge.access-status Open Access ,
Influence of Soil Texture on Carbon Stocks in Deciduous and Coniferous Forest Biomass in the Forest-Steppe Zone of Oka–Don Plain
(MDPI, 2024-11-17) Sheshnitsan, Sergey; Odnoralov, Gennadiy; Tikhonova, Elena; Gorbunova, Nadezhda; Sheshnitsan, Tatiana; Murariu, Otilia-Cristina; Caruso, Gianluca
Forests play a crucial role in climate change mitigation by acting as a carbon sink. Understanding the influence of soil properties on carbon stocks in forests is essential for developing effective forest management strategies. The aim of the study was to assess the impact of soil texture on carbon stocks in the biomass of deciduous and coniferous tree stands of a forest-steppe ecotone. Soil samples were collected from 55 soil pits, and forest inventory data were obtained from eight permanent sample plots. The results showed that the distribution of mechanical particles in soils, particularly the stocks of silt and clay, significantly influenced the accumulation of carbon in tree stands. The stock of silt and clay was shown to increase with an increase in the diversity of tree species in forests and carbon stocks in forest stands. While soil organic carbon stocks did not exhibit a clear relationship with tree stand carbon stocks, a strong positive correlation (r = 0.802, p < 0.05) was found between the stocks of fine particles in the 2 m root-inhabited soil layer and the carbon stocks in tree biomass. The study provides a classification of forest types based on soil texture, which can facilitate differentiated forest management strategies for enhancing the carbon sequestration potential of forest ecosystems in the forest-steppe zone.