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Eficacitatea conducerii viței de vie cu creștere liberă a lăstarilor pe spalier modernizat în Republica Moldova
Get PDFAn urgent problem in viticulture is the development of perspective technologies based on modernizing the trellis, improving the bush training system, adapted to the requirements of complex mechanization. The research was carried out on the variety Pinot blanc R7 where two pruning variants were studied comparing agrobiological indicators according to current standards adopted in viticulture. Was established that forming bushes on a high trunk, compared to low standard ones, has some advantages: possibilities to use of mechanization for caring the plantations, including mechanized pruning, reducing the need in manual work, ventilation of the crown of the bush and better lighting of the leaf apparatus reducing the risk of diseases and harmful effects of late spring frosts
Comparison Adsorption of Cd (II) onto Lignin and Polysaccharide-Based Polymers
Get PDFGiven 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 grass lignin compared to the adsorption performances of polysaccharide polymers chemically functionalized, obtained by synthesis and in their native state, but which, although effective, have a cost price that does not allow for large-scale expansion. To improve the retention of Cd (II) on this aromatic component of the biomass resulting from the processing of lignocellulosic materials, different experimental conditions (pH, concentration, dose and contact time) were followed. The Freundlich and Langmuir isotherms were used to describe the equilibrium conditions. Adsorption kinetics were assessed using the Lagergren I and Ho and McKay II kinetic models, furnishing informative insights into the process mechanism. Lignin adsorption capacity was also analyzed by performing biological tests on tomato seeds (Lypercosium esculentum), since heavy metals are known to be a stress factor for seeds by disturbing the osmotic equilibrium. Through the prism of the investigated parameters and under precisely established experimental conditions, unmodified Sarkanda grass lignin—an aromatic biopolymer—can be recommended as a promising adsorbent for the retention of Cd (II) from aqueous solutions, successfully replacing polysaccharide, especially cellulose-based polymers
Effects of Dairy Cows Management Systems on the Physicochemical and Nutritional Quality of Milk and Yogurt, in a North-Eastern Romanian Farm
No full textThe study’s objective was to investigate changes in the fatty acid composition of cow milk in general and in 80 Romanian Spotted cows’ husbandry and feeding systems in particular (grazing–GC group vs. stabulation–SC group). The ultimate objective was to determine if the changes that happened in the milk also transferred to the finished product. Also, the influence of the quality of raw milk produced by both systems was evaluated when yogurt was made from it. The milk was gathered in May, July and September and used for both the yogurt-making process and the study, which lasted from May to October. In comparison to milk from SC, milk from grazed caws had larger percentages of fat and dry matter throughout the summer (GC) season. Moreover, pasture-based rations (MGC) contained more PUFA than MCS did. Data research revealed that not only do factors such as milk origin and initial quality have a substantial impact on yogurt quality parameters, but also technologies such as milk fermentation have a considerable impact on the fatty acid profile of yogurt. In comparison to cows kept permanently in stables, grazed cows (MGC) had fat with a lower concentration of saturated fatty acids and a higher proportion of rumenic, vaccenic and oleic acids (MSC). When fresh milk is processed into yogurt and other dairy products, the fatty acid profiles alter, with saturated fatty acids predominating over unsaturated ones. The findings show that pasture-fed cows have a positive impact on milk quality, particularly in terms of fatty acid profile, as well as on yogurt’s ultimate nutritional and dietary quality
Research on the influence of some technological factors on the production and its quality on Foeniculum vulgare Mill. species
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Sars-Cov-2 infection in cats and dogs: clinical analyses
Get PDFThe zoonotic origin of the SARS-CoV-2 requires surveillance on animals. We report the potent active and previous infection
with SARS-CoV-2 of household cats and dogs from COVID-19 owners in Romania, during 2021 and 2022. These results are
in accordance with those reported globally, confirming the cross-species transmission of SARS-CoV-2 variants. However,
there is no evidence that pets are involved in the spread of SARS-CoV-2 in humans, but are instead accidental hosts
Research on the influence of technological factors on growth and body development in young Karakul de Botoșani sheep
No full textProactive sanitary-veterinary monitoring of bee families included in a prophylaxis program (Active beekeeping season 2023)
Get PDFThe purpose of this work is to monitor the state of bee health through morphoclinical and laboratory examination of
bees on samples of live bees and honeycombs with brood for the prevention and control of diseases in bees in order to
include them in a study on the impact of the non-ionizing electromagnetic radiations on bees. Samples were collected
during the active season 2023, and morpho-clinically and laboratory examined according to OIE regulations from 9
private apiaries (PH, AG, TR, CL, VN, IS, DB, VL and IF) from which we collected 18 samples. The laboratory results
revealed the existence of some diseases in 6 apiaries (66.67%), as follows: a unique evolution (suspected foulbrood
disease in one apiary) (11.11%), five apiaries with mixed conditions (55,56%) (varroosis, nosemosis, chalkbrood, and
suspected poisoning), and three apiaries were diagnosed as clinically healthy (33.33%). Studying the influence of nonionizing
radiation on bees has wider implications for ecology and the environment, as bees play a crucial role in
pollination and maintaining ecosystems. The interaction between bees and electromagnetic radiation is a complex and
multifactorial issue that may explain the diversity of conclusions in the available studies. Therefore, studies are needed
in Romania to better understand the connection between non-ionizing electromagnetic radiation and the decline of bee
populations (Collony Colapse Disorder)
Comparative Evaluation of Antioxidant Status and Mineral Composition of Diploschistes ocellatus, Calvatia candida (rostk.) Hollós, Battarrea phalloides and Artemisia lerchiana in Conditions of High Soil Salinity
No full textNatural reserves play a fundamental role in maintaining flora and fauna biodiversity, but the biochemical characteristics of such ecosystems have been studied in an extremely fragmentary way. For the first time, mineral composition and antioxidant status of three systematic groups of organisms, lichens (Diplischistes ocellatus), mushrooms (Calvatia candida and Battarrea phalloides) and wormwood (Artemisia lerchiana) have been described at the territory of Bogdinsko-Baskunchak Nature Reserve (Astrakhan region, Russia), characterized by high salinity and solar radiation, and water deficiency. Through ICP-MS, it was determined that scale lichen D. ocellatus accumulated up to 10–15% Ca, 0.5% Fe, 15 mg kg−1 d.w. iodine (I), 54.5 mg kg−1 Cr. Battarrea phalloides demonstrated anomalously high concentrations of B, Cu, Fe, Mn Se, Zn, Sr and low Na levels, contrary to Calvatia candida mushrooms accumulating up to 10,850 mg kg−1 Na and only 3 mg kg−1 Sr. The peculiarity of A. lerchiana plants was the high accumulation of B (22.23 mg kg−1 d.w.), Mn (57.48 mg kg−1 d.w.), and antioxidants (total antioxidant activity: 68.6 mg GAE g−1 d.w.; polyphenols: 21.0 mg GAE g−1 d.w.; and proline: 5.45 mg g−1 d.w.). Diploschistes ocellatus and Calvatia candida demonstrated the lowest antioxidant status: 3.6–3.8 mg GAE g−1 d.w. total antioxidant activity, 1.73–2.10 mg GAE g−1 d.w. polyphenols and 2.0–5.3 mg g−1 d.w. proline. Overall, according to the elemental analysis of lichen from Baskunchak Nature Reserve compared to the Southern Crimean seashore, the vicinity of Baskunchak Salty Lake elicited increased environmental levels of Cr, Si, Li, Fe, Co, Ni and Ca