Numerus maurorum Hisp

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Antioxidant Activity and Phenolic Content of Sweet Cherries (Prunus Avium L.) from West and South-West of Romania

A diet rich in fruits and vegetables is associated with a lower incidence of degenerative diseases (such as cardiovascular disease and certain types of cancers). Currently, most research is focused on the content of polyphenols and antioxidant compounds found in fruit and vegetable. Sweet cherries (Prunus avium L.) contain a significant amount of polyphenols and several antioxidants that possess many biological activities such as anticancer, antioxidant and anti-inflammation properties. In present study were investigated the quantification of total polyphenols and antioxidant capacity in fruits of a number of selected sweet cherry genotypes. Although sweet cherry fruits are a significant source of different phenolic compounds, antioxidant activity of sweet cherries is not related only with the total phenolic content. Â

Frankliniella occidentalis – controlling in the cucumbers crops using physico-mechanical methods (yellow sticky traps)

An important method used in monitoring and controlling Thysanoptera pest cucumber crops in protected areas is physical-mechanical control method by using yellow sticky traps. Identification of thrips species directly on the trap is very difficult. Some species can be identified in this way including californian thrips, Frankliniella occidentalis.Yellow sticky traps attract a large number of adults and can be used directly in controlling or monitoring this pest population. In culture of cucumber in protected areas, the number of individuals collected varied very much, both reading and the traps, as can be seen that the highest number of samples/cm2 was identified on trap no. 2 and the lowest number was recorded on trap no. 4, where the number of individuals captured was about half less than the trap no. 2 On yellow sticky traps, the first reading was recorded an average of 87.81 samples/cm2 , on the second reading has been a number of 71.43 samples/cm2 and the last reading the number of copies collected was 75.31 samples/cm2 . Following research it was found that the greatest number of individuals/ trap was collected from the trap no. 2 (95 152 individuals/ trap) and the lowest number of individuals was collected from the trap no. 4 (56 848 individuals/ trap).The culture of cucumber, the average number samples/cm2 on yellow sticky traps was 78.18 individuals/cm2 . The optimal moment of trapping, and testing of insecticides and methods of effective control and cleaner, colored sticky traps can be used in realizing an orientative system of integrated controlling of the pests and illnesses at the vegetable crop from the protected spaces

The attack produced by californian thrips in the cucumbers crop from protected spaces

Cultures from greenhouses, which runs from midsummer until the coming cold season, is an optimal environment for the development of californian thrips, Frankliniella occidentalis. Californian thrips attacked crops and untreated can suffer heavy losses, one of the biggest damage is recorded in the greenhouses cucumber crops. It considers that a number of 3.6 adults per flower cause damage to these crops. On the attack of the californian thrips, Frankliniella occidentalis, we can say that this insect is one of the most common and important species that affect the quantity and quality of cucumber production in protected areas and are necessary effective measures to controlling it. In greenhouses cucumber crops were 80% loss of capacity due to attack by this pest. Damage depends on the development of the plant in the attack moment and insect density. Attacked and untreated cultures may be compromised, so it is very important to know which is the number of individuals Frankliniella occidentalis on plants in order to apply effective treatments that reduce pest population. The culture of cucumbers, cycle II, the highest number of copies/ flower on experimental variants field before treatment varied between 11 and 14. Economic threshold of pest in the cucumbers culture, cycle II was greatly exceeded (3-4 adults / flower). In cucumber crop cycle II californian thrips population density was an average of 12.66 insects / flower. Due to damage caused by this pest in cucumber crops in protected areas is necessary to know the pest density, optimum application time of treatment and most effective insecticide

Super-heavy fermion material as metallic refrigerant for adiabatic demagnetization cooling

Low-temperature refrigeration is of crucial importance in fundamental research of condensed matter physics, as the investigations of fascinating quantum phenomena, such as superconductivity, superfluidity and quantum criticality, often require refrigeration down to very low temperatures. Currently, cryogenic refrigerators with $^3$He gas are widely used for cooling below 1 Kelvin. However, usage of the gas is being increasingly difficult due to the current world-wide shortage. Therefore, it is important to consider alternative methods of refrigeration. Here, we show that a new type of refrigerant, super-heavy electron metal, YbCo$_2$Zn$_{20}$, can be used for adiabatic demagnetization refrigeration, which does not require 3He gas. A number of advantages includes much better metallic thermal conductivity compared to the conventional insulating refrigerants. We also demonstrate that the cooling performance is optimized in Yb$_{1-x}$Sc$_x$Co$_2$Zn$_{20}$ by partial Sc substitution with $x\sim$0.19. The substitution induces chemical pressure which drives the materials close to a zero-field quantum critical point. This leads to an additional enhancement of the magnetocaloric effect in low fields and low temperatures enabling final temperatures well below 100 mK. Such performance has up to now been restricted to insulators. Since nearly a century the same principle of using local magnetic moments has been applied for adiabatic demagnetization cooling. This study opens new possibilities of using itinerant magnetic moments for the cryogen-free refrigeration

Cercetări în necropola Sucidavei, jud. Olt (1968) / Recherches dans la nécropole de Sucivada, dép. d’Olt (1968)

Petolescu Constantin C., Onea Oct. Cercetări în necropola Sucidavei, jud. Olt (1968) / Recherches dans la nécropole de Sucivada, dép. d’Olt (1968). In: Materiale şi cercetări arheologice, N°10 1973. pp. 125-140

Cercetările din castrul cu val de pământ de la Câmpulung (cartierul Pescăreasa), 1987—1989 / Les recherches du camp à vallum en terre de Câmpulung (Pescăreasa), 1987—1989

Petolescu Constantin C., Cioflan Teodor. Cercetările din castrul cu val de pământ de la Câmpulung (cartierul Pescăreasa), 1987—1989 / Les recherches du camp à vallum en terre de Câmpulung (Pescăreasa), 1987—1989. In: Materiale şi cercetãri arheologice (Serie nouã), N°1 2001. 1999. pp. 215-220