Semiclassical Electron Correlation in Density-Matrix Time-Propagation

Lack of memory (locality in time) is a major limitation of almost all present time-dependent density functional approximations. By using semiclassical dynamics to compute correlation effects within a density-matrix functional approach, we incorporate memory, including initial-state dependence, as well as changing occupation numbers, and predict more observables in strong-field applications.Comment: 4.5 pages, 1 figur

Parameters of Ensiled Maize With Biological and Chemical Additives

The amount of maize grown in Poland has increased rapidly. Nowadays it takes about 600,000 ha, 40% of which is used as silage. Changing climate in Poland, with dry summer followed by wet autumn with ground frost causes extensive moulds contamination and high presence of the fusarium toxins in the maize during the harvest. The norms accepted in the EU concerning the acceptable level of deoxynivalenol (DON) and zearalenol (ZON) in feedstuffs for cattle require detailed examination of this problem as it decides on the health quality and production results. The aim of the study was to evaluate the effects of ensiling forage maize with microbiological additive and chemical preservative on the DON and ZON amount. The effects of the secondary fermentation after the silos were open (stability evaluation) were also examined

Parameters of Ensiled Maize With Biological and Chemical Additives

The amount of maize grown in Poland has increased rapidly. Nowadays it takes about 600,000 ha, 40% of which is used as silage. Changing climate in Poland, with dry summer followed by wet autumn with ground frost causes extensive moulds contamination and high presence of the fusarium toxins in the maize during the harvest. The norms accepted in the EU concerning the acceptable level of deoxynivalenol (DON) and zearalenol (ZON) in feedstuffs for cattle require detailed examination of this problem as it decides on the health quality and production results. The aim of the study was to evaluate the effects of ensiling forage maize with microbiological additive and chemical preservative on the DON and ZON amount. The effects of the secondary fermentation after the silos were open (stability evaluation) were also examined

Hygienic Value and Mycotoxins Level of Grass Silage in Bales for Horses

Mycotoxins are secondary metabolites of moulds which have adverse effects on humans, animals, and crops and result in illnesses and economic losses. The toxins may occur in storage under conditions favourable for the growth of the toxin-producing fungus or fungi. The highest forage concentration of toxins was found in horizontal storage methods such as bunker silos and feed piles, which were left open to oxygen. In any fermentation storage system, temperature and the presence of moisture is sufficient for toxin production. In a plastic covered storage system, oxygen penetration is slowed but not eliminated. The longer silage is stored, the greater the opportunity for significant fungus growth and toxin contamination. Although the effects of mycotoxins on horses are not well documented in scientific literature, in many situations mycotoxin problems appear to be significant e.g. colic, neurological disorders, paralysis and brain lesions. The aim of this study was to determine the level of mycotoxins in grass silage prepared in bales for horses

37/Okołooperacyjna brachyterapia pulsacyjna (BT PDR) jako metoda podwyższenia dawki na lożę po guzie u chorych na raka piersi leczonych z zachowaniem narządu

Cel pracyWstępna ocena okołooperacyjnej BT PDR ze śródoperacyjnym umieszczeniem prowadnic w obszarze loży po usuniętym guzie u chorych na raka piersi leczonych z zachowaniem narządu (ang. breast-conserving therapy, BCT).Materiał i metodyPrzedstawiono materiał 53 chorych na raka piersi (T1-3N0-1M0, w wieku 38–64 lat) poddanych BCT, u których jako boost na lożę po usuniętym guzie zastosowano BT ze śródoperacyjnym wprowadzeniem miękkich prowadnic. U 7 chorych z guzem T2-3 przed BCT zastosowano chemioterapię. Zabieg operacyjny stanowił pierwotne leczenie (30 chorych) lub poszerzenie marginesu po uprzedniej biopsji ekscyzyjnej (23 chorych). Za wyjątkiem 9 chorych, u których nie stwierdzono w czasie zabiegu zmian przerzutowych w węźle wartowniczym, równocześnie dokonano usunięcia pachowych węzłów chłonnych. Podczas zabiegu dokonywano rekonstrukcji gruczołu. BT w dawce 15 Gy (1 Gy/puls/godz.) rozpoczynano następnego dnia, a napromienianie piersi wiązką zewnętrzną (RT) - po 1–4 tygodniach. Stosowano aparat microSelectron PDR zawierający źródło 192 Ir. Rozkład dawki w obszarze implantu wyznaczano komputerowo przy użyciu systemu planowania PLATO, stosując optymalizację geometryczną objętościową. Plany leczenia oceniano na podstawie naturalnego histogramu.WynikiUmieszczenie prowadnic do BT przedłużało zabieg o ok. 20 minut. U 51 chorych (96%) zastosowano implant 2-płaszczyznowyz użyciem 5–13 prowadnic (mediana 9). Średnia objętość leczona (V100) wynosiła 34.4 cm3. Zabiegowi nie towarzyszyło zwiększone krwawienie. BT PDR była bardzo dobrze tolerowana. Martwica tłuszczowa z koniecznością powtórnego wycięcia tkanek wystąpiła u 1 chorej, co spowodowało opóźnienie RT wiązką zewnętrzną o miesiąc. W okresie obserwacji od 3 do 25 miesięcy nie ujawniono nawrotu miejscowego raka, u 2 chorych wystąpiły przerzuty odległe i u 1 chorej - rak w drugiej piersi.WnioskiOkołooperacyjna BT PDR jest prostą, dobrze tolerowaną metodą podania dodatkowej dawki w BCT. Śródoperacyjne umieszczenie prowadnic umożliwia dokładne wyznaczenie obszaru wysokiej dawki, co zmniejsza ryzyko błędu lokalizacyjnego

Structures in multicomponent polymer films : their formation, observation, applications in electronics and biotechnology

Several strategies to form multicomponent films of functional polymers, with micron, submicron and nanometer structures, intended for plastic electronics and biotechnology are presented. These approaches are based on film deposition from polymer solution onto a rotating substrate (spin-casting), a method implemented already on manufacturing lines. Film structures are determined with compositional (nanometer) depth profiling and (submicron) imaging modes of dynamic secondary ion mass spectrometry, near-field scanning optical microscopy (with submicron resolution) and scanning probe microscopy (revealing nanometer features). Self-organization of spin-cast polymer mixtures is discussed in detail, since it offers a one-step process to deposit and align simultaneously domains, rich in different polymers, forming various device elements: (i) Surface segregation drives self-stratification of nanometer lamellae for solar cells and anisotropic conductors. (ii) Cohesion energy density controls morphological transition from lamellar (optimal for encapsulated transistors) to lateral structures (suggested for light emitting diodes with variable color). (iii) Selective adhesion to substrate microtemplates, patterned chemically, orders lateral structures for plastic circuitries. (iv) Submicron imprints of water droplets (breath figures) decorate selectively micron-sized domains, and can be used in devices with hierarchic structure. In addition, selective protein adsorption to regular polymer micropatterns, formed with soft lithography after spin-casting, suggests applications in protein chip technology. An approach to reduce lateral blend film structures to submicron scale is also presented, based on (annealed) films of multicomponent nanoparticles

OmpR controls Yersinia enterocolitica motility by positive regulation of flhDC expression

Flagella and invasin play important roles during the early stages of infection by the enteric pathogen Yersinia enterocolitica. Our previous study demonstrated that OmpR negatively regulates invasin gene expression at the transcriptional level. The present study focused on the role of OmpR in the regulation of flagella expression. Motility assays and microscopic observations revealed that an ompR mutant strain exhibits a non-motile phenotype due to the lack of flagella. An analysis of flhDC::lacZYA chromosomal fusions demonstrated a decrease in flhDC expression in ompR mutant cells, suggesting a role for OmpR in the positive control of flagellar master operon flhDC, which is in contrast to the negative role it plays in Escherichia coli. Moreover, high temperature or osmolarity and low pH decreased flhDC expression and OmpR was not required for the response to these factors. Evidence from an examination of the DNA binding properties of OmpR in vitro indicated that the mechanism by which OmpR regulates flhDC is direct. Electrophoretic mobility shift assays confirmed that OmpR binds specifically to the flhDC promoter region and suggested the presence of more than one OmpR-binding site. In addition, phosphorylation of OmpR by acetyl-P appeared to stimulate the binding abilities of OmpR. Together with the results of our previous studies revealing the negative role of OmpR in the regulation of invasin expression, these findings support a model in which invasion and motility might be reciprocally regulated by OmpR

The influence of selected economic factors on quality of life in peripheral areas

Wyjaśniono termin „peryferyjności” zarówno w kontekście przestrzennym, jak i ekonomicznym. Zamieszczono dane odnoszące się do aspektu ekonomicznego peryferyjności, tj. poziomu dochodów i wydatków gospodarstw domowych. Przeprowadzono badania ankietowe w 667 gospodarstwach wiejskich położonych na obszarach peryferyjnych woj. mazowieckiego.This article explains the term “peripheral” both in spatial and economic terms. Results refer to economic periphery, i.e., the household income level and expenditure, and are based on data collected through a survey in Mazowieckie voivodshi

Processes of social inclusion in rural areas in Poland

Przedstawiono zakresy definicyjne pojęcia „inkluzja społeczna”. Omówiono najważniejsze rozwiązania prawne i organizacyjne w zakresie inkluzji społecznej w Polsce. Przeanalizowano formy inkluzji społecznej realizowane na obszarach wiejskich w Polsce. Wspieranie zdolności adaptacyjnych pracowników, zapewnienie elastyczności rynków pracy oraz budowanie kapitału społecznego przez edukację, to główne założenia współczesnej aktywnej polityki rynku pracy w Polsce. Polityka ta realizowana jest w ramach funduszu pracy, przy jednoczesnym wsparciu programów Unii Europejskiej.The article presents a range of definition of terms social inclusion and social economy. Most important legal and organizational solutions in the field of social inclusion in Poland. We analyzed the forms of social inclusion implemented in rural areas in Poland: Labour Fund, Operational Programme for Civic Initiatives (PO FIO), Operational Programme Human Capital (OP HC). Supporting the adaptability of workers and provide the flexibility of labor markets and social capital through education, the main assumptions of modern active labor market policy in Poland. This policy is implemented in the operating fund, while the support of a number of EU programs

The problem of poverty and social exclusion in rural areas, with particular consideration given to areas of post state farms

Przedstawiono poziom dochodów do dyspozycji w różnych grupach społeczno-ekonomicznych. Zbadano zasięg ubóstwa na terenach wiejskich w oparciu o dwie granice: relatywną oraz minimum egzystencji. Zamieszczono również dane przedstawiające terytorialne zróżnicowanie ubóstwa w Polsce.The level of disposable incomes in various socio-economic groups has been presented. The extent of poverty in rural areas has been studied on the basis of two limits: the relative limit and the existential minimum. Moreover, data presenting territorial diversification of poverty levels in Poland has been included