Bydgoszcz segetal flora changes and state

Wydano przy pomocy finansowej Uniwersytetu Łódzkiego oraz Komitetu Badań NaukowychThe state and changes of Bydgoszcz segetal flora are described in the present paper. The segetal flora of the town comprises 242 species. 31 of these species are on the list of threatened weeds.Zadanie pt. Digitalizacja i udostępnienie w Cyfrowym Repozytorium Uniwersytetu Łódzkiego kolekcji czasopism naukowych wydawanych przez Uniwersytet Łódzki nr 885/P-DUN/2014 zostało dofinansowane ze środków MNiSW w ramach działalności upowszechniającej naukę

Zastosowanie ewidencji gruntów i budynków w badaniach przestrzennych zmian zabudowy na przykładzie Skarżyska-Kamiennej

Głównym celem pracy było dokonanie opisu zmian zabudowy w Skarżysku-Kamiennej na podstawie danych z ewidencji gruntów i budynków. W literaturze przedmiotu odnaleziono liczne prace na temat zmian zabudowy, ale rzadko stosowano w nich dane katastralne. Niemniej jednak oparto na nich wiele opracowań kartograficznych. Z tego względu dużo uwagi poświęcono opisowi metody badania i danych źródłowych. Zidentyfikowano niekompletność pozyskanej bazy danych. Mimo to możliwe było zminimalizowanie jej wpływu na wyniki przy użyciu dodatkowych źródeł. Pozyskane dane umożliwiły przeprowadzenie badań z dokładnością do pojedynczych budynków

Security Reputation Metrics

Security reputation metrics (aka. security metrics) quantify the security levels of organization (e.g., hosting or Internet access providers) relative to comparable entities. They enable benchmarking and are essential tools for decision and policy-making in security, and may be used to govern and steer responsible parties towards investing in security when economic or other decision-making factors may drive them to do otherwise

Is MLC phosphorylation essential for the recovery from ROCK inhibition in glioma C6 cells?

Inhibition of Rho-associated protein kinase (ROCK) activity in glioma C6 cells induces changes in actin cytoskeleton organization and cell morphology similar to those observed in other types of cells with inhibited RhoA/ROCK signaling pathway. We show that phosphorylation of myosin light chains (MLC) induced by P2Y2 receptor stimulation in cells with blocked ROCK correlates in time with actin cytoskeleton reorganization, F-actin redistribution and stress fibers assembly followed by recovery of normal cell morphology. Presented results indicate that myosin light-chain kinase (MLCK) is responsible for the observed phosphorylation of MLC. We also found that the changes induced by P2Y2 stimulation in actin cytoskeleton dynamics and morphology of cells with inhibited ROCK, but not in the level of phosphorylated MLC, depend on the presence of calcium in the cell environment.This study was supported by a grant from the Ministry of Science and Higher Education, Poland (N N303 0179 33).Peer Reviewe

Z doświadczeń zastosowania systemu komputerowego DYSKCHEM w dydaktyce podstaw chemii w szkole wyższej

The publication discusses the usefulness of Computer tests and their construction for teaching and checking the mastery by students particular groups of problems in General and Inorganic Chemistry. The research was based on the Computer DYSKCHEM teaching system created by the authors and started up on PC-type comW artykule omówiono zagadnienie konstrukcji i przydatności testów komputerowych do nauczania oraz sprawdzania wyników opanowania przez studentów poszczególnych grup zagadnień z dziedziny chemii ogólnej i nieorganicznej. Podstawą badań był opracowany przez autorów dydaktyczny system komputerowy DYSKCHEM, uruchomiony w pracowni studenckiej Wydziału Chemicznego Politechniki Łódzkiej na komputerach typu PC

Urban greenery aphids (Hemiptera, Aphididae)

In 2010-2011, a study of the occurrence of aphids was carried out in three parks in Bydgoszcz, the Balaton Park, the Jan Kochanowski Park and the Park by Unii Lubelskiej. Observations were made every ten days by monitoring trees and shrubs as soon as aphids appeared, i.e. from the end of April to the beginning of August. The counts of aphids were replicated three times, on each plant species where the insects were observed. Based on the collected material, 14 aphid species were found on 16 plant species in the Jan Kochanowski Park, 16 species of aphids on 14 plant species in the Balaton Park and in the Park by Unii Lubelskiej, only 12 species feeding on 16 plant species. In both years of the study, of aphid species feeding on trees and shrubs, Aphis fabae, Aphis sambuci, Aphis spiraephaga and Hyalopterus pruni, occurred most frequently. The Balaton Park was characterized by the largest number of aphids colonizing plants; in contrast, the number of tree and bush species on which they fed was the lowest

Performance analysis of relational databases Oracle and MS SQL based on desktop application

Comparison of efficiency is not a trivial phenomenon because of disparities between different database systems. This paper presents a methodology of comparing relational database systems in respect of mean time of execution individual DML queries containing subqueries and conjunction of tables. The presented methodology can be additionally accommodated to studies of efficiency in a range of database system itself (study of queries executed directly in database engine). The described methodology allows to receive statement telling which database system is better in comparison to another in dependency of functionalities fulfilled by external application. In the article the analysis of mean time of execution individual DML queries was performed.Two research hypotheses have been put forward: "Microsoft SQL Server database system needs less time to execute INSERT and UPDATE queries than Oracle database" and "Oracle database system needs less time to execute DML queries with binary data than SQL Server