THE ANALYSIS OF HEAVY METALS CONTENT IN WHOLE AND CHOPPED PLANTS

This paper presents the results of experimental research performed to analyze thepotentially contain of heavy metals in whole and chopped herbs, in order to examine the influence of the cutting process on bioaccumulation of metals in studied plant material

HARVESTING TECHNOLOGIES FOR MEDICINAL AND AROMATIC PLANTS

In recent years, the people had more and more the tendency to return to remedies offered by nature. Nowadays, according to W.H.O. data, over 80% out of world population is using the medicinal plants for which a great interest was generated by traditional phytotherapy and especially by the fact that they represent an important source of bioactive substances. Therefore, the fields cultivated with medicinal plants have been extended and the relevant culture technologies have been modernized and adapted to current requirements. In general, mechanized harvesting of medicinal and aromatic plants is an important prerequisite in achieving a good production. Lavender is one of the most valuable aromatic species due to its volatile oil obtained by distillation of fresh inflorescences, being widely used in industry of perfume, cosmetics, pharmaceuticals, aromatherapy, etc. Harvesting technologies of lavender and medicinal plants require specialized equipment designed according to cultivated field size. This paper presents a lavender harvesting technology, based on the utilization of a low-capacity equipment designed to gather the lavender from rather reduced surfaces. At the same time, a technology of harvesting medicnal plants, from which aerial organs (stems, leaves, flowers) are collected, is presented together with the small capacity equipment used for this purpose. This equipment was designed in order to support small farmers, for whom lavender and other medicinal species cultivation (from which the herb is capitalized) represents a real opportunity for obtaining major incomes

SEPARATION OF CHOPPED NETTLE MATERIAL ON PLANE SIEVE LENGTH

The paper presents the results of several experimental researches regarding to a separation mixture of dried and chopped nettle fragments on a dimensional separator of medicinal plants, equipped with oscillating flat sieves. Three parameters were varied (material flow rate, sieves angle of inclination and oscillations sieves frequency). For separation process description along chopped vegetal material sieves, the experimental results have been tested by Rosin-Rammler distribution law

TECHNOLOGY FOR ORGANIC WEED CONTROL

In recent years, crop maintenance works have become a major challenge for organic farming systems, where the application of chemical treatments is totally forbidden. The effect of weeds on crops varies according to pedoclimatic, biological or technological parameters, the resulting damages being both quantitative and qualitative. By weed control, we aim to prevent their competition in order to obtain maximum crop yields.Among the methods of thermal weed control, used as an alternative to chemical weeding, steam or hot water-based ones have been increasingly used as they provide an efficient, environmentally friendly and economical way of removing harmful plants.This paper presents a technology for the maintenance of medicinal and aromatic plant organic crops, based on the use of innovative equipment for weed thermal control by using hot water

INNOVATIVE EQUIPMENT FOR CULTIVATING MEDICINAL AND AROMATIC PLANTS ON SMALL SURFACES

Medicinal and aromatic plant cultures are part of the niche culture category. Although the local pedoclimatic conditions are favourable, the application of culture technologies is carried out on small farms. To this fact also contributes, in addition to other factors, the lack of adequate technical means, farmers usually using physical workforce (family or local labour). In order to support the small growers, it was necessary to design and develop equipment for the cultivation of medicinal and aromatic plants on small surfaces.This paper presents the tests performed on the experimental plots at INMA Bucharest, regarding the sowing and harvesting works, on a culture of Basil - Ocimum basilicum L., Lamiaceae family

AGRICULTURE 4.0 - A CHALLENGE FOR ROMANIAN AGRICULTURE

Given that the labor market in Romania has an acute shortage of labor (about 1 million people), in agriculture this lack is felt even more acutely because the population in the villages is declining and aging, thus it is increasingly difficult for Romanian farmers to find labor, let alone skilled labor. One solution can be the digitization of agriculture, ie the introduction of the latest management concepts, sensors, automation, robots, etc. in the modernization of work processes in agriculture, thus reducing the need for labor, while increasing productivity and efficiency in agriculture

Distribution of resonances for open quantum maps

We analyze simple models of classical chaotic open systems and of their quantizations (open quantum maps on the torus). Our models are similar to models recently studied in atomic and mesoscopic physics. They provide a numerical confirmation of the fractal Weyl law for the density of quantum resonances of such systems. The exponent in that law is related to the dimension of the classical repeller (or trapped set) of the system. In a simplified model, a rigorous argument gives the full resonance spectrum, which satisfies the fractal Weyl law. For this model, we can also compute a quantity characterizing the fluctuations of conductance through the system, namely the shot noise power: the value we obtain is close to the prediction of random matrix theory.Comment: 60 pages, no figures (numerical results are shown in other references

Modulation Invariant Bilinear T(1) Theorem

We prove a T(1) theorem for bilinear singular integral operators (trilinear forms) with a one-dimensional modulation symmetry

The illusory benefit of cognates: Lexical facilitation followed by sublexical interference in a word typing task

© 2018 Cambridge University Press. Cognate facilitation and cognate interference in word production have been elicited separately, in different paradigms. In our experiment, we created conditions for facilitation and interference to occur sequentially, and identified the levels at which the two processes manifested. Bilinguals translated cognates and noncognates from L2 to L1 and typed the translations. Response-onset latencies were shorter for cognates (cognate-facilitation) but execution latencies were longer, and cross-language orthographic errors were more frequent for cognates than for noncognates (cognate-interference). Facilitation at onset followed by interference during word execution suggests that the language-selection mechanism operated efficiently at the lexical level but inefficiently at the sublexical level. It also suggests that language selection is not an event with irreversible outcome, but selection at one level may not guarantee language-selectivity at subsequent levels. We propose that a model of bilingual language production that specifies multiple language-selection processes at multiple loci of selection can accommodate this phenomenon