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Effects of food supplemented with ZooBioR product in young chickens on the functional state of the liver
No full textCyanobacteria Spirulina platensis is widely used as a biotransformer of bioelements and as a producer of biologically active substances with a wide spectrum of use. The current study is aimed at objectively examining the impact of the product ZooBioR (obtained from Spirulina platensis) on health, and especially on the marker parameters of the functional state of the liver in hens, in the first technological period of laying. The experiment was performed on 5 groups of birds (of 14 heads/group). In 4 groups out of 5, the food was supplemented with the remedy ZooBioR in different doses (5.0; 10.0; 15.0; 20.0 mg active substance/kg of fodder). It has been established that the tested product improves the
health of laying hens, in the first technological period of laying, significantly contributes to improving the metabolic processes in the body, especially the functional state of the live
Non-formal entrepreneurial university curriculum: experiences and perspectives
No full textRethinking the curriculum in general, especially the university one, is a major coordinate of educational reforms. The aim of these transformations is to adapt educational structures to the profound changes of the world where we live, emphasizing the proactive dimension of the educational effort. We proposed to analyze the evolution of the non-formal entrepreneurial university curriculum, highlighting university experiences in this regard. Entrepreneurial education (EE) is one of the fastest growing areas of education in the world. We integrate entrepreneurial education within “the new educations”. Investing in entrepreneurial education is one of the most profitable investments Europe can make: research shows that participating pupils and students are 3 to 6 times more likely to open a business later, at some point in their lives, compared to the ones who do not benefit from entrepreneurial education. One of the eight key competences established at the EU level (2006) was entrepreneurial competence. Research has led to the creation of the
entrepreneurial university, which was under the sign of a triple helix: university-industry-government. The key to a knowledge-based economy is research, education and innovation. The communication presents concrete action directions for the development of students' entrepreneurial skills through non-formal activities at USAMV Iași (Student
Entrepreneurial Society, postgraduate entrepreneurship education courses, funding projects, trips and visits to agricultural companies and firms, internships)
Some biological features and biomass quality of Lupinus albus and Lupinus luteus in Moldova
No full textFabaceae species play a crucial role in natural ecosystems and agriculture, because they have the potential to symbiotic fixation of atmospheric nitrogen and soil carbon sequestration, improve biological activity and soil structure, increase the quality and quantity of food and feed, bring improvements resource efficiency in various biorefinery systems. We have studied biological features, biochemical composition and nutritive value, and have estimated the biomethane potential of aerial biomass of the Fabaceae species Lupinus albus and Lupinus luteus, which have been cultivated in the experimental plot of the “Alexandru Ciubotaru” National Botanical Garden (Institute), Chisinau, R. Moldova, Medicago sativa and Onobrychis viciifolia were used as control variants. The results of our research revealed that the dry matter of harvested whole plants of
Lupinus species contained 166-206 g/kg CP, 86-110 g/kg ash, 221-258 g/kg ADF, 337-339 g/kg NDF, 31-40 g/kg ADL, 190 - 218g/kg Cel and 116-141 g/kg HC. The nutritional value of Lupinus green mass:75.5- 80.9 % DDM, 72.9-76.6 % DOM, RFV 168-208, 13.45-13.96 MJ/kg DE, 11.04- 11.46 MJ/kg ME and 7.06-7.48 MJ/kg NEl. It has been found that the
biomethane potential of the Lupinus substrates varied from 309 to 324 l/kg ODM.The annual species Lupinus albus and Lupinus luteus are a promising source of fodder and feedstock for biomethane production
Particularities of olfactory system in zebra fish (Danio rerio)
No full textHistological study of olfactory bulbs and peripheric olfactory organs were made on 10 adult zebra fiskes (Danio rerio),
both sexes, using paraphin embeding method and HEA and PAS stain. Zebra fish is a very good model for studying the
mecanisms for odour detection, olfactory changes of the environement and behavioural effects of them. Olfactory system
in zebra fish is formed by a pair of olfactory peripherical organs or rosets, situated in nasal cavity, conected at the
olfactory bulbs. Sensorial region of the rosete have an characteristic pseudostratified columnar epithelium consisting
mainly from sensitive olfactory neurons. Olfactory bulb is a cerebral structure situated in the most rostral region of the
anterior brain, conected to olfactory bulb by a short olfactory nerf. It is the central receptor when the olfactory
informations are prepared and sent to telencephalic regions
Characterization of heavy metal toxicity in some plants and microorganisms—A preliminary approach for environmental bioremediation
No full textIn situ bioremediation processes are important for control of pollution and clean-up of contaminated sites. The study and implementation of such processes can be designed through investigations on natural mechanisms of absorption, biotransformation, bioaccumulation and toxicity of pollutants in plants and microorganisms. Here,
the phytotoxic effects of Cr(VI) and Cd(II) on seed germination and plant growth of Lepidium sativum have been examined at various concentrations (30−300 mg/L) in single ion solutions. The studies also addressed the ecotoxicity of metal ions on Azotobacter chroococcum and Pichia sp. isolated from soil. Microbial growth was
estimated by weighing the dry biomass and determining the enzymatic activities of dehydrogenase and catalase. The results showed that Cr(VI) and Cd(II) can inhibit L. sativum seed germination and root development, depending on the metal ion and its concentration. The phytotoxic effect of heavy metals was also confirmed by the
reduced amounts of dried biomass. Toxicity assays demonstrated the adverse effect of Cr(VI) and Cd(II) on growth of Azotobacter sp. and Pichia sp., manifested by a biomass decrease of more than 50 % at heavy metal concentrations of 150−300 mg/L. The results confirmed close links between phytotoxicity of metals and their bioavailability for phytoextraction. Studies on the bioremediation potential of soils contaminated with Cr(VI)
and Cd(II) using microbial strains focusing on Azotobacter sp. and Pichia sp. showed that the microbes can only tolerate heavy metal stress at low concentrations. These investigations on plants and microorganisms revealed their ability to withstand metal toxicity and develop tolerance to heavy metals
The Occurrence of Aflatoxins in Nuts and Dry Nuts Packed in Four Different Plastic Packaging from the Romanian Market
No full textMycotoxins are secondary metabolites produced by various fungi. A very important category of mycotoxins are aflatoxins, considered to be the most dangerous in humans. Aflatoxin B1, well known as a favorable factor in the occurrence of hepatocellular carcinoma in humans, is the most controversial of all mycotoxins. Aflatoxins, found in naturally contaminated food, are resistant to degradation by heat. Current food processing practices and conventional storage conditions do not completely eliminate aflatoxin contamination from the food supply chain. Long storage food products—such as peanuts, pistachio, nuts in general, and dried fruits—are susceptible to aflatoxins contamination. The type of plastic material can influence the concentration of aflatoxins during storage due to the permeability to gas and moisture exchange with the external milieu. Nuts in general and dried fruits are consumed in large quantities worldwide. Therefore, herein we investigated the effect of plastic material on the total aflatoxins and aflatoxin B1 content in 64 samples of nuts and dried fruits packed and stored in low-density polyethylene (LDPE), polypropylene (PP), polyethylene (PE), and polyethylene terephthalate (PET). The method consisted in a cleanup procedure using immunoaffinity columns coupled with RIDASCREEN FAST immunoenzymatic competitive assays based on the ELISA technique. Collected data were subjected to statistical analysis and multiple comparisons tests were applied. From the total analyzed samples, 14.06% exceeded the maximum admitted European levels for total aflatoxins. The highest concentrations of total aflatoxins were obtained from samples packed in LDPE, followed by PP, PE, and PET. Aflatoxin B1 was detected in all samples packed in LDPE, PP, and PE. Most of the samples packed in PET had concentrations <1 µg/kg. These results indicate that nuts in general packed and stored in LDPE are more prone to contamination with aflatoxins, while PET is more suitable for maintaining the quality and safety of these products
Research on the biodiversity of harmful and useful species from some agricultural and horticultural crops in 2018
No full textObservations were made during the research period of the year 2018 in the apple tree plantation, and in the cabbage
crop and maize crop belonging to Vasile Adamachi and Ezareni farm, from Iasi county.The aim of the paper was to
make a comparison regarding the entomofauna of the three very different cultures as technology and agroecosystem
conditions. The collection of the material was carried out using the soil traps type Barber method from June to
September inclusive. The collected material was cleaned of the vegetable debris was then prepared for identification up
to the level of the spece only for coccinamide. From the analysis of the collected material it follows that the specimens
of coleopters species belong to the: Coccinella septempunctata, Adalia bipunctata, Propylaea quatordecimpunctata,
Hippodamia variegata, Harmonia axyridis, Nephus quadrimaculatus, Carabidae, Scarabaeidae, Elateridae In terms of
the abundance of entomofauna, on the crops, it is found that most specimens were collected and determined from the
cabbage crops (649), from the apple orchard a number of 362 specimens. and 540 specimens in the maize crop from Ezareni
Promoting the green business - a pillar of the sustainable development
No full textThe evolutionary trends of the economic and social environment are increasingly associated with new forms of the
economic growth and development, focused on the attention given to the relation with the environment and the impact
on this. This orientation is also supported by the sustainable development strategies, which are increasingly active for
the national business practices. By this paper, we aim to bring together, in a common vision, the approaches that support
a balanced economic growth, in accordance with the requirements of the environmental protection and the natural
resources conservation. Through a qualitative empirical research, we identify the green businesses as a pillar of the
sustainable development that supports the evolution of the business environment in a consolidated and balanced pace.
The analysis, descriptive-exploratory, is based on synthesis and exemplification and follows the evolution of green
business in the last 10 years, at European and national level, starting from the European experiences in the countries that
have supported and promoted the mechanisms to strengthen the green business. The results of the study are materialized
in a synoptic presentation of the national business environment oriented towards the green business, arguing the need to
connect the strategic requirements of the sustainable development, Horizon 2030, with the specific objectives of any
form of business: profitability and stability. Thus, we present a general dashboard that groups the most relevant areas in
which green businesses in Romania have demonstrated their sustainability, considering both economic and social
objectives, as well as the ecological ones. Although the means of promoting such businesses are not very visible,
sufficiently transparent or strongly supported, we draw some conclusions which support the hypothesis that the future of
a solid and sustainable business environment requires the reconsideration of the economy-environment relationship and
promoting the symbiotic perspective on which the green business it is based
The effect of biostimulants on the process of photosynthesis at the lettuce
No full textThis study followed the effect of two organic biostimulants on the photosynthesis process in two salad varieties grown
in the greenhouse. At the same time, the aim was to establish the most effective way to apply biostimulants to increase
production. Application of growth regulators was done every ten days by foliar spraying and root application. The first
application being made at the appearance of the first leaves, and the last application was made ten days before harvest.
The biostimulants used in this study were Wuxal Ascofol with a high content of algae extract and Black Jack based on
humic acids. The photosynthesis process was evaluated by determining the total chlorophyll content and by evaluating
the content of photosynthetic pigments in the leaves. The study showed that the applied organic treatments stimulated
the photosynthesis process in both varieties of salad, which was correlated with an increase in head of salad.
Chlorophyll content of 431 nm and chlorophyll b 453 nm, components of the absorption center that capture light energy
and transfer it to the reaction center recorded the highest values in the variant treated with Wuxal Ascofol, which shows
an intense transport of assimilated to foliar system. It was also noted that the foliar application of biostimulants to
lettuce gives much better results than the application at the root level