Browsing by Author "Ungureanu, Elena"

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  • Analysis of chemical parameters for three types of reconstituted milk powder 
    Eperjessy, Diana-Beatrice; Trofin, Alina-Elena; Ungureanu, Elena; Trincă, Lucia-Carmen; Sandu, Tatiana (“Ion Ionescu de la Brad” University of Agricultural Sciences and Veterinary Medicine, Iași, 2019)
    The infant formula means a breast milk substitute specifically made to meet the nutritional requirements of infants during the first few months of life until appropriate complementary feed is introduced. ...
  • Analysis of the green areas with unlimited access and their impact on the population from Iaşi city 
    Sandu, Tatiana; Trofin, Alina-Elena; Pantazi, Viorica; Ungureanu, Elena (“Ion Ionescu de la Brad” University of Agricultural Sciences and Veterinary Medicine, Iași, 2015)
    The current area of Iasi is approx. 3.770 ha of which the green system occupies approx. 826.80 ha (both green spaces within city limits and outside the city) and only 362.60 ha represent unlimited access green spaces ...
  • Aspects of the contribution of the LEADER approach to rural development in Romania case study: North-East development region 
    Brezuleanu, Carmen-Olguța; Brezuleanu, Mădălina-Maria; Mihalache, Roxana; Susanu, Irina; Creangă, Diana-Elena; Ungureanu, Elena (Iasi University of Life Sciences (IULS), Iași, 2024-03-04)
    Rural development is the second pillar of the Common Agricultural Policy of the European Union (EU), with the role of helping the rural areas of the EU and implicitly Romania to address the economic, environmental, ...
  • Calcium carbonate-carboxymethyl chitosan hybrid materials 
    Fortună, Maria-Emiliana; Ungureanu, Elena; Jităreanu, Carmenica-Doina (MDPI, 2021-06-16)
    In the present work, precipitated calcium carbonate (PCC) and carboxymethyl chitosan (CMC) were prepared to obtain new hybrid materials used in papermaking. In the first step, oc‐ curred the precipitation of CaCO3 in ...
  • Cellulose-Based Metallogels—Part 1: Raw Materials and Preparation 
    Mikhailidi, Aleksandra; Volf, Irina; Belosinschi, Dan; Tofanică, Bogdan-Marian; Ungureanu, Elena (MDPI, 2023-05-08)
    Metallogels are a class of materials produced by the complexation of polymer gels with metal ions that can form coordination bonds with the functional groups of the gel. Hydrogels with metal phases attract special attention ...
  • Cellulose-Based Metallogels—Part 2: Physico-Chemical Properties and Biological Stability 
    Mikhailidi, Aleksandra; Volf, Irina; Belosinschi, Dan; Tofanică, Bogdan-Marian; Ungureanu, Elena (MDPI, 2023-08-07)
    Metallogels represent a class of composite materials in which a metal can be a part of the gel network as a coordinated ion, act as a cross-linker, or be incorporated as metal nanoparticles in the gel matrix. Cellulose is ...
  • Chemical and spectral characterizations for some lignin products 
    Ungureanu, Elena; Jităreanu, Carmenica-Doina; Trofin, Alina-Elena; Sandu, Tatiana; Popa, Valentin I. (“Ion Ionescu de la Brad” University of Agricultural Sciences and Veterinary Medicine, Iași, 2015)
    Lignin derivative (the commercial product - Protobind 1000) offered by the Granit Recherche Developement S.A. company, Lausanne-Schwitzerland was synthesized from annual plants. The present study’s aim was to modify commercial ...
  • Chemical transformations and spectral characterization to Protobind 3000 lignin 
    Ungureanu, Elena; Ariton, Adina-Mirela; Trofin, Alina-Elena; Jităreanu, Carmenica-Doina; Ungureanu, Ovidiu C.; Popa, Valentin I. (“Ion Ionescu de la Brad” University of Agricultural Sciences and Veterinary Medicine, Iași, 2018)
    Lignin derivative (the commercial product -Protobind 3000) offered by the Granit Recherche Developement S.A. company, Lausanne-Schwitzerlandwas synthesized from annual plants. The present study’s aim was tomodify ...
  • Comparison Adsorption of Cd (II) onto Lignin and Polysaccharide-Based Polymers 
    Ungureanu, Elena; Fortună, Maria-Emiliana; Țopa, Denis-Constantin; Brezuleanu, Carmen-Olguța; Ungureanu, Vlad; Chiruță, Ciprian; Rotaru, Răzvan; Tofanică, Bogdan-Marian; Popa, Valentin I.; Jităreanu, Carmenica-Doina (MDPI, 2023-09-17)
    Given the predominantly negative impact of heavy metals on living organisms, the present study proposed to evaluate the adsorption performances under static conditions of Cd (II) from aqueous solutions on unmodified Sarkanda ...
  • Cornhusk powders as adsorbents for nitrites in solution: a thermodynamic and kinetic approach 
    Trofin, Alina-Elena; Ungureanu, Elena; Motrescu, Iuliana; Trincă, Lucia-Carmen; Țopa, Denis-Constantin; Eperjessy, Diana-Beatrice (Iasi University of Life Sciences (IULS), Iași, 2023-10-04)
    The retention of nitrite ions in solutions of different concentrations by three cornhusks-based powders was analyzed. Natural cornhusk powder (NCHP), as waste obtained from local market, the alkalized cornhusk powder ...
  • The decrease in nitrate content of polluted waters by using waste wood as adsorbent material 
    Trofin, Alina-Elena; Ungureanu, Elena; Trincă, Lucia-Carmen; Sandu, Tatiana; Iacob, Cătălina-Ioana (“Ion Ionescu de la Brad” University of Agricultural Sciences and Veterinary Medicine, Iași, 2015)
    Large amounts of waste wood obtained from logging and wood processing have found various uses in the furniture industry, agriculture, entering into various compost recipes with applications in restoring soil's fertility ...
  • Design of Functional Polymer Systems to Optimize the Filler Retention in Obtaining Cellulosic Substrates with Improved Properties 
    Ungureanu, Elena; Fortună, Maria-Emiliana; Țopa, Denis-Constantin; Lobiuc, Andrei; Ungureanu, Ovidiu C.; Jităreanu, Carmenica-Doina (MDPI, 2023-02-25)
    In the present work, the possibility of increasing the calcium carbonate (CaCO3) content in sheets of paper to optimize their properties was investigated. A new class of polymeric additives for papermaking is proposed as ...
  • Effects of hybrid polymeric material based on polycaprolactone on the environment 
    Fortună, Maria-Emiliana; Ungureanu, Elena; Jităreanu, Carmenica-Doina; Țopa, Denis-Constantin; Harabagiu, Valeria (MDPI, 2022-07-13)
    Polymers are of great interest in areas such as agriculture, medicine and pharmacy, the food and cosmetic industries, and the chemical and construction industries. However, many polymers are nonbiodegradable and are not ...
  • Effects of hybrid polymericmaterial based on polycaprolactone on the environment 
    Fortună, Maria-Emiliana; Ungureanu, Elena; Jităreanu, Carmenica-Doina; Țopa, Denis-Constantin; Harabagiu, Valeria (MDPI, 2022-07-13)
    Polymers are of great interest in areas such as agriculture, medicine and pharmacy, the food and cosmetic industries, and the chemical and construction industries. However, many polymers are nonbiodegradable and are not ...
  • Efficiency of some screening methods used in monitoring the quality of vegetable substrates and the presence of mycotoxins 
    Ariton, Adina-Mirela; Neculai Văleanu, Andra-Sabina; Poroșnicu, Ioana; Ungureanu, Elena; Trincă, Lucia-Carmen (“Ion Ionescu de la Brad” University of Life Sciences, Iaşi, 2021)
    The purpose of this study was to evaluate the effectiveness of screening methods applied in the analysis of plant products (cereal seeds, feed, hay, etc.) used in agriculture and animal husbandry. Their screening can be ...
  • Evaluation of water quality in the Prut River, Sculeni-Iasi Area by determining some physical-chemical indicators 
    Gîlcă, Valerica; Gîlcă, Ioan; Simeanu, Daniel; Simeanu, Cristina; Ungureanu, Elena; Radu Rusu, Răzvan-Mihail (“Ion Ionescu de la Brad” University of Agricultural Sciences and Veterinary Medicine, Iaşi, 2020)
    In 2018, a series of researches were carried out regarding the main water quality indicators in the Prut river, Iasi county, Sculeni area. Following the taking and carrying out of physico-chemical analyzes on the collected ...
  • Gravitational analyses applied to protobind 1000 lignin 
    Ungureanu, Elena; Ungureanu, Ovidiu C.; Trofin, Alina-Elena; Ariton, Adina-Mirela; Jităreanu, Carmenica-Doina; Popa, Valentin I. (“Ion Ionescu de la Brad” University of Agricultural Sciences and Veterinary Medicine, Iași, 2020)
    Lignin derivative (the commercial product -Protobind 1000) offered by the Granit Recherche Developement S.A. company, Lausanne-Schwitzerlandwas synthesized from annual plants. The ligninstands out by a very large range ...
  • Gravitational analyses applied to protobind 1000 lignin 
    Ungureanu, Elena; Ungureanu, Ovidiu C.; Trofin, Alina-Elena; Ariton, Adina-Mirela; Jităreanu, Carmenica-Doina; Popa, Valentin I. (“Ion Ionescu de la Brad” University of Agricultural Sciences and Veterinary Medicine, Iași, 2020)
    Lignin derivative (the commercial product - Protobind 1000) offered by the Granit Recherche Developement S.A. company, Lausanne-Schwitzerland was synthesized from annual plants. The lignin stands out by a very large ...
  • Gravitational sedomentometrical analyses applied to the sarkanda grass lignin 
    Ungureanu, Elena; Ungureanu, Ovidiu C.; Trofin, Alina-Elena; Ariton, Adina-Mirela; Jităreanu, Carmenica-Doina; Popa, Valentin I. (“Ion Ionescu de la Brad” University of Agricultural Sciences and Veterinary Medicine, Iași, 2019)
    The lignin stands out by a very large range of applications in extremely various domains. The adsorption-desorption capacity, ion exchange capacity and its catalytic properties are just a few specific ...
  • Innovative approaches for the analysis and decontamination of mycotoxins from feed and milk 
    Ariton, Adina-Mirela; Chelmu, Sorin-Sergiu; Neculai–Văleanu, Andra-Sabina; Postolache, Alina-Narcisa; Ungureanu, Elena; Creangă, Șteofil (University of Bucharest, 2020)
    Mycotoxins are secondary toxic metabolites produced by some filamentous fungi. In spite of great efforts to prevent it, contamination of animal feed with mycotoxins still occurs very frequently, causing serious diseases ...