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Tytuł:
What if we fight to night?
Autorzy:
Schneider, J. J.
Powiązania:
Army 1995, nr 11, s. 38-45
Data publikacji:
1995
Tematy:
Dowódcy szkolenie Stany Zjednoczone 1995 r.
Kadry (wojsk.) szkolenie Stany Zjednoczone 1995 r.
Szkolenie operacyjno-taktyczne program Stany Zjednoczone 1995 r.
Opis:
Zmiany strukturalne systemu planistycznego sił zbrojnych Stanów Zjednoczonych. Sposoby i problemy doskonalenia kadry dowódczej.
Dostawca treści:
Bibliografia CBW
Artykuł
Tytuł:
Multidimensional simulation of combustion and knock onset in gas engines
Autorzy:
Tatschl, R.
Priesching, P.
Schneider, J.
Powiązania:
https://bibliotekanauki.pl/articles/245656.pdf
Data publikacji:
2018
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
gas engines
simulation
combustion
efficiency
knock onset
Opis:
Natural gas fuelled internal combustion engines enable efficient energy conversion with relatively low environmental impact. Depending on the specific application, the available fuel quality, and the emission regulations to be fulfilled, different types of gas-engine combustion systems are in use. The major performance and hence efficiency limiting factors in gas fuelled engines are related to the lower ignitability of natural gas at part load and the appearance of abnormal combustion (knock) at high load conditions. This article provides an overview of the multidimensional CFD simulation workflow for the investigation and assessment of flame propagation and knock onset characteristics in different types of natural gas fuelled internal combustion engines. The most common approaches for simulating flame propagation/combustion under engine conditions are presented together with selected models for describing the pre-flame reactions finally leading to knock onset in the unburned in-cylinder charge ahead of the flame. Based on selected application examples, the models’ performance and capabilities with respect to reflecting the essential characteristics of flame propagation and knock onset are presented.
Źródło:
Journal of KONES; 2018, 25, 2; 379-389
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
New hybondontoid shark from the Permocarboniferous [Gzhelian-Asselian] of Guardia Pisano [Sardinia, Italy]
Autorzy:
Fischer, J
Schneider, J.W.
Ronchi, A.
Powiązania:
https://bibliotekanauki.pl/articles/20682.pdf
Data publikacji:
2010
Wydawca:
Polska Akademia Nauk. Instytut Paleobiologii PAN
Opis:
Numerous isolated teeth, fin spine fragments and dermal denticles of a hybodont shark from a lacustrine limestone horizon at the top of lithofacies B of the Late Carboniferous to Early Permian succession of the Guardia Pisano Basin (Sulcis area, southwestern Sardinia, Italy) are assigned to a new species of the genus Lissodus Brough, 1935. Lissodus sardiniensis sp. nov. is erected on the basis of about 500 teeth, which show a unique feature of only one pair of lateral cusps that are bent in the direction of the prominent central cusp. Weak heterodonty allows distinction of symphyseal, mesial to anterolateral, and lateral teeth. Lissodus sardiniensis sp. nov. was a freshwater−adapted durophagous shark of bottom dwelling habit, an interpretation supported by general construction of the dentition and the morphology of the dermal denticles. The association with Acanthodes, diplodoselachid sharks and branchiosaurs allows the reconstruction of a five−level trophic chain for the Guardia Pisano Basin. The discovery of Lissodusin Sardinia is presently the southernmost known occurrence of that genus in the Late Palaeozoic of Europe. This new find adds significantly to knowledge of migration routes of aquatic organisms, especially freshwater sharks, between the single European basins in the Late Pennsylvanian, and changes in palaeobiogeography during the Early Permian.
Źródło:
Acta Palaeontologica Polonica; 2010, 55, 2; 241-264
0567-7920
Pojawia się w:
Acta Palaeontologica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
$#*! Sociologists Say: e-Public Sociology on Twitter
Autorzy:
Schneider, Christopher J.
Powiązania:
https://bibliotekanauki.pl/articles/2108119.pdf
Data publikacji:
2017-04-30
Wydawca:
Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego
Tematy:
Public Sociology
e-Public Sociology
Twitter
Social Media
Qualitative Media Analysis
Opis:
This paper explores how individuals who self-identify on Twitter as sociologists holding teaching posts at institutions of higher education use the popular micro-blogging social media site. A total of 152,977 tweets from profiles of 130 sociologists were collected and examined using qualitative media analysis. What emerged from these data was an empirical case for an expanded conceptualization of Burawoy’s vision of public sociology. Building upon published research (Schneider and Simonetto 2016), the purpose of this conceptually informed paper is to further empirically develop e-public sociology – a form of public sociology that emerges through use of social media whereby the sociologist can simultaneously be the generator and interlocutor of dialogue with multiple publics. Suggestions for future research are noted.
Źródło:
Qualitative Sociology Review; 2017, 13, 2; 79-99
1733-8077
Pojawia się w:
Qualitative Sociology Review
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Przyczyny przestępczości. Nowe aspekty międzynarodowej dyskusji o teoriach kryminologicznych
Causes of Crime – Recent Developments in the International Criminological Theory-Discusion
Autorzy:
Schneider, Hans J.
Powiązania:
https://bibliotekanauki.pl/articles/698664.pdf
Data publikacji:
1998
Wydawca:
Polska Akademia Nauk. Instytut Nauk Prawnych PAN
Tematy:
przestępczość
teorie kryminologiczne
choroba psychiczna
przestępstwo
crime
criminological theory
mental illness
offense
Opis:
This survey intends to critically inform the reader about new and further developments of criminological theories on causality and about how successful these theories have proved in empirical and practical terms during the last three decades. From the point of view of mainstream criminology the criminalbiological, criminalpsychological, criminalsociological, socialpsychological, victimological, critical-radical, feminist, postmodernist and integrated theories are being considered. Preceding this is a discussion of the theory of national choise, according to which criminality is based on a costprofit-analysis and which, empirically speaking, has not exactly held good. Among the criminalbiological approaches the theory of constitutional predisposition is being discussed which assumes an interaction between genes and environment to produce criminality. Since the studies on family, twins and adoption, while attempting to prove this interaction, show both theoretical and methodological shortcomings, this theory is being rejected. Under the headline of "criminalbiological theories" a discussion of mental illness and crime can be found. A psychiatrisation of crime is not held advisable: Only between 0.2 % and 2 % of all schizophrenic persons are arrested for violent crimes per year, which amounts 1.1 % to 2.3 % of the total arrests for violent crime. Among the criminalpsychological theories the following three approaches are being discussed: the psychopathological theory, the theory of criminal personality according to Hans Jürgen Eysenck and the biosocial theory of inherited criminal tendencies according to Sarnoff A. Mednick. It is proposed to give up the term "psychopathy'' altogether since it contradicts modern findings of dark field research that personality traits not socially desirable are restricted to and concentrated in only a small section of the human race. The theories of Eysneck and Mednick, according to which criminal behaviour is tfre result of interaction between certain social environmental factors and inherited predispositions of the central nervous system, have empirically not been sufficiently proven. The survey's emphasis lies on criminalsociological, socialpsychological and victimological theories. In the context o criminalsociological approaches the theories of social disorganization and of anomie are being discussed. A society is socially disorganized when social bonds dissolve, when social control breaks down and when interpersonal disorientation spreads among its members. The theory of social disorganization has been further developed inasmuch as the social structuring of delinquency areas has been described as a dynamic process and as the spiral-like social downfall and dereliction of a neighbourhood ("community crime career"). In empirical studies making use of data from accounts showing how people have become perpetrator or victim ("British Crime Surveys"), this theory of social disorganization has been widely confirmed. The theory of anomie has undergone further development by the adaptation of two new approaches: the theory of institutional anomie according to Steven F. Messner and Richard Rosenfeld and the theory of general strain according to Robert Agnew. The theory of institutional anomie underlines the extreme importance western societies ascribe to monetary success while at the same time not stressing the component of achieving this success by legal means. One institution – economy – assumes priority over all non-economic institutions such as family, education or politics, which on their part are only insufficiently capable of restricting the criminogenic pressure phenomenon, i.e. the overestimation of monetary success. According to the theory of general strain the incapability of reaching positively marked aims results in overstraining (pressure). This pressure can be measured by ascertaining the gap between aspirations (ideal aims) and expectations on the one hand and actual achievements and successes on the other. The socialpsychological theories, which are theories of social processes can be subdivided into theories of cognitive-social learning, control, interaction and life-course. According to the theory of cognitive-social learning a person acquires his/her behaviour by way of reinforcement and modeling. In self-reinforcement processes people both reward and punish themselves. Finally, this theory regards human learning as an active, cognitively controlled psychical process of assimilating experience. Criminal behaviour is learned by reaffirming (rewarding) it more than socially conforming behaviour. Delinquents acquire it in criminal subcultures, in which criminal behaviour is justified by means of neutralisation techniques as being "not really'' criminal. The theory of cognitive-social learning of criminal behaviour (the theory of differential reinforcement and imitation) has held good empirically and practically and has been complemented by the theory of crime seduction according to Jack Katz stating that the euphoria of criminal success is relevant factor. The robber f.i. is not only rewarded by his material profit but also by experiencing domination during the criminal act. Among the theories of control the theory of social bonds according to Travis Hirschi is widely appreciated in practical terms. Empirically speaking, however, it has not quite achieved what it promised. It has been further developed by the theory of self-control, according to which delinquents are persons with a low level of self-control as a result from ineffective and inadequate socialization. Another new development is the theory of control balance according to Charles R. Tittle. The central statement of this theory is that the amount of control a person is subjected to, as compared to the control this person exercises, influences both the probability of committing delinquencies and the possibility to commit certain types of crime. The theory of interaction, which is a theory of social process, has been converted in the seventies and eighties to a radical socialstructural labeling approach. Control institutions (f.i police, law-courts) are assumed to produce delinquency and criminality by selectively sanctioning the lower class in the order to preserve the power of the ruling class. In the nineties, however, the interaction theory is distancing itself from this radical power conflict approach and reverting to its original focus: its connection to the cognitive-social learning theory. The interaction theory has been supplemented by the Australian criminologist John Braithwaite. He regards shame as an essential means of informal social control and distinguishes between reintegrative and disintegrative shaming. The life-course-theories are new developments stemming from the late eighties and early nineties. According to these theories, delinquency and criminality develop in interactive processes spanning the whole cycle of life. Developmental crirninology focusses on the questions why people become delinquent (onset, activation), why their delinquencies continue (maintenance), why delinquencies often increase both in frequency and in seriousness (acceleration, escalation, aggravation) and, lastly, why people stop being delinquent (deceleration, desistance, termination). It is concept of casuality is dynamic and interactive. Personal and social damages cause delinquency and criminality which in their turn again result in personal and social damages. Basically, three life-course-theories have recently been developed: the interaction theory by Terence P. Thornberry, the theory of social turning-points by Robert J. Sampson and John H. Laub and the theory of criminal tendencies by David P. Farrington. Victimological theories open a range of completely new criminal-aetiological perspectives. For victimogenesis (enquiring into the causes for becoming a victim) the model of lifestyle-exposure and opportunity deals with the probability of individuals being in certain places at certain times and under certiatin circumstances and thereby meeting certain categories of people. The routine-activity-theory according to Lawrence E. Cohen and Marcus Felson distinguishes between three elements: a motivated offender, a suitable target and the absence of capable protectors (guardians) of this object against a violation. The routine-activity-approach accordingly predicts the highest risk of delinquency when the victim's suitability is highest: best social visibility, easiest access, strongest attraction and when the level of object observation is low. The routine-activity-theory has been further developed into a structural-choise model of victimization. Within this reconsidered and verified model the nearness and protection of a potential victim represent components of choise. The critical-radical school in modern criminology intends to develop an alternative to mainstream criminology and in the long run to replace mainstream criminology. While having achieved their first aim, thus far they have failed in thier second. The critical-radical school of thought can be divided into three theories: According to marxist theory the basis of crime can be found in the contradictions of capitalism oppresing and exploiting the working class. Crime originates in the basic conflict between the bourgeoisie and the working class, which is a conflict of power and interests. The anarchistic theory aims at showing that that kind of justice by which our modern1egal system defines itself is in reality a facade for an intrinsic system of institutionalized injustice. Left-wing realism holds a „theory” consisting of four variables: victim, offender, state agencies and the public. Without disregarding the victims of so-called street-crimes, radical realism is based not-only on comprehending the victimization of the offender by the state, but also on the understanding of victimizition of the working class by the working class. Feminist theories in criminology focus on the four following issues: the problem of generalization: It is questionable whether the criminological theories developed so far are readily applicable to women and girls; the problem of gender relations: an explanation is required on why women and girls; commit fewer and less serious crimes and delinquencies than man and boys and how significant a factor masculinity is for the genesis of crime; the victimalization problem: Both the manifestations and the causes of male physical and sexual violence towards woman have to be describeds much more accurately; the problem of equal treatment of man and woman in the criminal justice system: It is questionable whether the principles of masculinity or feminity, should define the climate of the criminal justice system. Constutive criminology is a postmodernist school. It questions the attempt of institutions and individuals to claim priority of ''expert'' knowledge. Truth to them is a form of domination. Linked with constitutive criminology is the peacemaking criminology, which tries to soothe human sufferings and reduce criminality in this way. Solutions of the criminal justice system are rejected as violent. Individual violence cannot be overcome through state violence. Integrated theories attempt to take the best of every ''middle-range" theory and combine this into a more comprehensive new theory. Finally, as an example of an integrated theory, John Hagan's theory of power control is put forward which aims at explaining the lower frequency and seriousness of woman's criminality and girls' delinquency by looking at patriarchy and class structures.
Źródło:
Archiwum Kryminologii; 1998, XXIII-XXIV; 13-44
0066-6890
2719-4280
Pojawia się w:
Archiwum Kryminologii
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Evolution of Disordering in SiC upon Sintering; Phase Analysis of SiC by Rietveld Method with Application of Neutron and X-Ray Diffraction
Autorzy:
Pałosz, B.
Boysen, H.
Schneider, J.
Schulz, H.
Powiązania:
https://bibliotekanauki.pl/articles/1924324.pdf
Data publikacji:
1993-01
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
61.10.My
61.12.-q
61.50.Ks
81.20.Lb
Opis:
Neutron and X-ray diffraction patterns of α and β powders as well as of sintered SiC were analysed by a multiphase Rietveld method. It is shown that structural models combined of large period polytypes can be used to approximate the disordering of these polytype structures. The hexagonality of the samples could be terminated with reproducibility 1-2% using different combinations of large-period polytypes. It follows that the usual classification into α and β SiC is an oversimplification. The polytype behaviour of SiC powders and the role of twinning of cubic layer stackings is discussed. Distribution functions of stacking sequences of different length in α and β phases are derived.
Źródło:
Acta Physica Polonica A; 1993, 83, 1; 95-106
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Evolution of reproductive strategies in dictyopteran insects-clues from ovipositor morphology of extinct roachoids
Autorzy:
Hornig, M.K.
Haug, C.
Schneider, J.W.
Haug, J.T.
Powiązania:
https://bibliotekanauki.pl/articles/20361.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Instytut Paleobiologii PAN
Opis:
Dictyoptera, which comprises cockroaches, termites and mantids, is a quite successful group of insects in evolutionary terms with a long fossil record—roachoid insects were already abundant 315 million years ago in the Carboniferous forests. One of the most remarkable autapomorphies of extant dictyopterans, and possibly a major factor for their persisting success, is the ability to produce oothecae. Despite the robustness of this sort of egg package, fossils of oothecae are very rare, the oldest direct evidences being from the Cretaceous Crato Formation in Brazil (115 mya). The ability to produce oothecae is presumably linked to a specific ovipositor morphology, including a significant length reduction. Hence, ovipositor morphology can indirectly inform about the reproductive strategy of a species. Herein we describe the ovipositor morphology of various fossil forms of dictyopteran insects. Early fossil roachoids, in contrast to the modern forms, possessed a very long and prominent ovipositor, reminiscent of the ovipositor in orthopterans (Ensifera), indicating that these forms laid individual, rather small eggs into a substrate. We present examples from different fossil deposits, which show the entire range of ovipositor morphologies, from very long forms over forms with ovipositors partly reduced in length to modernappearing morphologies. Most remarkably, different shapes of ovipositors seem to be present in roachoids in the fauna of the 115 million years old Crato Formation—species with long prominent ovipositors co-existed with species with a reduced short and broad ovipositor. Additionally, females that carry oothecae attached to their abdomen indicate a third type of ovipositor: a further reduced ovipositor as seen in modern forms, which already allowed the internal production of oothecae.
Źródło:
Acta Palaeontologica Polonica; 2018, 63, 1
0567-7920
Pojawia się w:
Acta Palaeontologica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A web-oriented architecture for deploying multiple unmanned vehicles as a service
Autorzy:
Au, C. N.
Delea, C.
Schneider, J.
Oeffner, J.
Jahn, C.
Powiązania:
https://bibliotekanauki.pl/articles/1841554.pdf
Data publikacji:
2021
Wydawca:
Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:
Unmanned Vehicles
web-oriented architecture
multiple unmanned vehicles
environmental shipping monitoring center
robot operating system
risk-aware autonomous port inspection drone
transport layer security
datagram transport layer security
Opis:
Providing a robotic-assisted service in scenarios involving multiple Unmanned Vehicles (UVs) in possible beyond-visual-Line-Of-Sight (LoS) operations, safety and security are critical concerns. We develop a web-oriented, human-in-the-loop infrastructure to explore how the service provider can secure their system, enforce instant access control over dynamic operator-robot connections, and ensure the integrity, availability, and traceability of communicated data. Our proposed minimal viable solution requires an authentication server to verify user identity, a back server with a database to handle user requests and state-transition events, and a RabbitMQ (RMQ) server to trace the origin of data.
Źródło:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2021, 15, 1; 155-164
2083-6473
2083-6481
Pojawia się w:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of Sulfur and Acid Soluble Aluminum Content on Precipitate and Microstructure of Grain-Oriented Silicon Steel
Autorzy:
Zhou, B.
Zhu, C.
Li, G.
Luo, Z.
Gao, Y.
Bao, S.
Schneider, J.
Powiązania:
https://bibliotekanauki.pl/articles/354451.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
grain oriented silicon steel
sulfur
acid soluble aluminum
precipitate
microstructure
texture
Opis:
The combined effect of sulfur (S) and acid soluble aluminum (Als ) content on precipitates and microstructures in grain-oriented silicon steel were investigated. The results show that there are dominant AlN and a little amount of MnS-AlN composite in annealed hot-rolled band, and the amount of precipitates increases distinctly with increasing Als content, while S content plays a negligible role. The inhibitors that precipitate during hot band annealing can restrain the grain growth during hot band annealing and primary annealing, and the smaller grains of annealed hot-rolled band can contribute to the formation of {111} <112> texture during primary annealing. Lower S content is conducive to the formation of {111} <112> texture during primary annealing by promoting the formation of Goss texture during hot rolling.
Źródło:
Archives of Metallurgy and Materials; 2018, 63, 4; 1701-1708
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Zastosowanie technik elastooptycznych w procesie kontroli stateczności zboczy
The use of the photo-elasticity technology of measurements in slope stability monitoring
Autorzy:
Chrost, A.
Czarnecki, L.
Krywult, Ł.
Schneider-Glotzl, J.
Powiązania:
https://bibliotekanauki.pl/articles/349398.pdf
Data publikacji:
2009
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
geomata
OTDR
światłowód polimerowy
deformacja terenu
monitorowanie osuwisk
geotextile
Optical Time Domain Reflectory
polymer optical fiber
deformation terrain
monitoring of slops failures
Opis:
W artykule zostały opisane możliwości zastosowania technik elastooptycznych do monitoringu dużych obiektów geotechnicznych. Opisano instalację prototypowej geomaty światłowodowej na osuwisku w KWB "Bełchatów" oraz przedstawiono wyniki pomiarów.
The article discusses issues connected with possibilities of the use of photo-elasticity technology in large geotechnical objects. It describes the installation of the prototype geotextile with polymer optic fiber on the slope failure in Bełchatów open cast mine and it presents the results of measurements.
Źródło:
Górnictwo i Geoinżynieria; 2009, 33, 2; 77-81
1732-6702
Pojawia się w:
Górnictwo i Geoinżynieria
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis of 50-year wind data of the Southern Baltic Sea for modelling coastal morphological evolution – a case study from the Darss-Zingst Peninsula
Autorzy:
Zhang, W.
Harff, J.
Schneider, R.
Powiązania:
https://bibliotekanauki.pl/articles/48896.pdf
Data publikacji:
2011
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
Baltic Sea
coastal morphological evolution
coastline change
Darss-Zingst Peninsula
modelling
morphodynamic model
sea level
statistical analysis
wind
wind direction
wind speed
Opis:
High-resolution wind series in the southern Baltic Sea for the period of 1958–2007 are analysed to generate representative climate input conditions for a multi-scale morphodynamic model to simulate decadal-to-centennial coastline change. Four seasonal wind classes, each characterized by a predominant distribution of wind direction and speed, are derived from statistical analysis. Further calibration of this statistical description is done by sensitivity studies of the model to generate similar coastline changes of the Darss-Zingst peninsula as the measured data for the last century. The coastline change of this area is then projected for the next 300 years based on four different climate scenarios, through which impacts of accelerated sea level rise and storm frequency on the long-term coastline change are quantified.
Źródło:
Oceanologia; 2011, 53, (1-TI)
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Preparation of faba bean (Vicia faba L.minor) products. Part V. Effect of hydrothermal treatment of faba bean and peas on the quality of protein isolates
Otrzymywanie produktów z bobiku (Vicia faba L.minor), cz.V. Wpływ obróbki hydrotermicznej bobiku i grochu na jakość izolatów białkowych
Autorzy:
Borowska, J.
Kozlowska, H.
Schneider, C.
Powiązania:
https://bibliotekanauki.pl/articles/1399507.pdf
Data publikacji:
1989
Wydawca:
Instytut Rozrodu Zwierząt i Badań Żywności Polskiej Akademii Nauk w Olsztynie
Tematy:
faba bean
proteins
protein isolates
trypsin inhibitors activity
residual fat
Opis:
From hydrothermally treated cotyledons of faba bean and pea there were obtained protein isolates characterized by inreased protein content, trace activity of trypsin inhibitors, lowered content of bonded and residual fat, and better taste compared to isolate obtained from non-treated material. This significant improvement of quality was obtained at the cost of 20% yield decrease.
W celu poprawienia jakości izolatów, szczególnie smaku z liścieni bobiku i grochu po obróbce hydrotermicznej-parowaniu (110°C, 2min) otrzymano izolaty, które poddano ocenie chemicznej i organoleptycznej. Izolaty z parowanych liścieni w porównaniu z nieparowanymi charakteryzowały się większą zawartością białka o lepszej rozpuszczalności oraz miały znacznie obniżoną aktywność antytrypsynową, szczególnie preparat bobikowy, w którym była ona śladowa. Uwzględniając trwałość otrzymanych izolatów i ich cechy organoleptyczne, przeprowadzono analizę zawartości tłuszczu całkowitego, resztkowego i związanego. Jakkolwiek wszystkie izolaty zawierały więcej tłuszczu całkowitego aniżeli mąki, to izolaty otrzymane z liścieni parowanych zawierały go o ok. 3% mniej niż izolaty z nasion kontrolnych. Mniejsza była również zawartość tłuszczu związanego. Najbardziej istotną zaletą wstępnej obróbki hydrotermicznej liścieni była zdecydowana poprawa cech organoleptycznych. Izolaty te były pozbawione charakterystycznego, lekko gorzkawego i strączkowego posmaku i zapachu. Ujemną natomiast stroną było, zresztą spodziewane obniżenie o 20% wydajności procesu otrzymania izolatów.
Źródło:
Acta Alimentaria Polonica; 1989, 15(39), 2; 171-177
0137-1495
Pojawia się w:
Acta Alimentaria Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Sources of particulate selenium in the Baltic Sea atmosphere
Autorzy:
Dudzinska-Huczuk, B.
Schneider, B.
Bolalek, J.
Powiązania:
https://bibliotekanauki.pl/articles/48530.pdf
Data publikacji:
2000
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
X-ray fluorescence
aerosol
Rugen Island
air filtration
atmosphere
Baltic Sea
coastal weather station
selenium
Opis:
To determine the atmospheric concentrations and size distributions of particulate selenium (Se), aerosols were collected by air filtration and impactor sampling at the Kap Arkona coastal weather station on the Island of R¨ugen.T otal reflection X-ray fluorescence analysis was used to determine Se and numerous other elements as well.The dependence of the Se concentration on the wind direction and the results of a regression analysis indicated that Se associated with sub-micron particles is mainly derived from anthropogenic sources.The pronounced relationship between Se and Cu indicated that copper smelting is a major source of atmospheric selenium. A marine Se contribution was identified for particles larger than 2 μm.
Źródło:
Oceanologia; 2000, 42, 3
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Biological efficiency of the Brookhaven Medical Research Reactor mixed neutron beam estimated from gene mutations in Tradescantia stamen hair cells assay
Autorzy:
Cebulska-Wasilewska, A.
Schneider, K.
Capała, J.
Coderre, J.
Powiązania:
https://bibliotekanauki.pl/articles/146139.pdf
Data publikacji:
2000
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
neutrons
relative biological efficiency
Tradescantia
Opis:
The relative biological effectiveness of low energy neutrons for the induction of various abnormalities in Tradescantia stamen hair mutation (Trad-SH) assay was studied using two clones (T-4430 and T-02), heterozygous for flower color. Dose response relationships for gene mutations induced in somatic cells of Trad-SH were investigated after irradiation with a mixed neutron beam of the Brookhaven Medical Research Reactor (BMRR), currently used in a clinical trial of boron neutron capture therapy (BNCT) for glioblastoma. To establish the RBE (relative biological effectiveness) of the BMRR beam in the induction of various biological end-points in Tradescantia, irradiation with various doses of g-rays was also performed. After irradiation all plants were cultivated several days at Brookhaven National Laboratory (BNL), the transported to Poland for screening the biological end-points. Due to the post-exposure treatment, all plants showed high levels of lethal events and alteration of the cell cycle. Plants of clone 4430 were more reactive to post-treatment conditions, resulting in decreased blooming efficiency that affected the statistics. Slope coefficients estimated from the dose response curves for gene mutation frequencies allowed the evaluation of ranges for the maximal RBE values of the applied beam vs. g-rays as 6.0 and 5.4 for the cells of T-02 and T-4430, respectively. Estimated fraction of doses from neutrons and corresponding biological effects for the clones T-02 and T-4430 allowed to evaluate the RBE values for neutrons part in the beam as 32.3 and 45.4, respectively.
Źródło:
Nukleonika; 2000, 45, 2; 115-119
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Preparation of faba bean (Vicia faba L.minor) products. Part IV. Effect of hydrothermaltreatment of faba bean on the quality of flour
Otrzymywanie produktów z bobiku (Vicia faba L.minor). Cz. IV Wpływ obróbki hydrotermicznej bobiku na jakość mąki
Autorzy:
Kozłowska, H.
Borowska, J.
Fornal, J.
Schneider, C.
Schmandke, H.
Powiązania:
https://bibliotekanauki.pl/articles/1399389.pdf
Data publikacji:
1989
Wydawca:
Instytut Rozrodu Zwierząt i Badań Żywności Polskiej Akademii Nauk w Olsztynie
Tematy:
faba bean
proteins
trypsin inhibitor activity
microstructure
organoleptic quality of flour
Opis:
The most advantageous parameters of hydrothermal treatment of faba cotyledons were determined. These are: steaming temperature 110°C and tiMc 2 min. and they caused - at relatively smay decrease of protein solubility and slight damage of cotyledons structure (SEM)-a cansiderable lowering of trypsin inhibitors activity and an improvement of organoleptic quality of flour obtained from thus prepared cotyledons.
Dążąc do poprawy jakości preparatów białkowych otrzymywanych z nasion roślin strączkowych liścienie nasion bobiku odmiany Fribo poddano obróbce hydrotechnicznej w temp.100, 110, i 120°C oraz czasie od 1 do 20 min w urządzeniu fluidyzacyjnym. Zastosowana obróbka hydrotermiczna zdecydowanie poprawiła jakość mąki bobikowej. Ustalono wyraźne obniżenie aktywności inhibitorów trypsyny oraz poprawę cech organoleptycznych, przede wszystkim smaku. Obniżenie się aktywności inhibitorów trypsyny, podobnie jak rozpuszczalności azotu było uzależnione od zastosowanej temperatury oraz czasu jej oddziaływania. Zaznaczył się wyraźniej wpływ temperatury, aniżeli czasu na badane wyróżniki jakościowe. Na przykład inaktywację inhibitorów trypsyny do aktywności śladowej uzyskano poddając liścienie ogrzewaniu w temp. 110°C przez 10 min, natomiast ogrzewanie w temp. 100°C przez 20 min spowodowało spadek aktywności o 64%. Wyniki analiz chemicznych znalazły potwierdzenie w obserwacji zmian struktury komórkowej liścieni w skaningowym mikroskopie elektronowym. Spadkowi rozpuszczalności towarzyszyły zmiany ciał białkowych i skrobi widoczne w mikroskopie. Nasilały się one w miarę podwyższania temperatury, bądź też wydłużania czasu jej oddziaływania. Na podstawie uzyskanych wyników ustalono, że temp. 110°C oddziałująca na badany materiał przez 2 min powodowała stosunkowo niewielkie zmiany denaturacyjne białka oraz istotne obniżenie aktywności inhibitorów trypsyny. Mąka otrzymana przy zastosowaniu wymienionych parametrów obróbki hydrotermicznej pozbawiona była całkowicie grochowego smaku i zapachu, co rokuje możliwości jej wszechstronnego zastosowania w żywności.
Źródło:
Acta Alimentaria Polonica; 1989, 15(39), 2; 161-169
0137-1495
Pojawia się w:
Acta Alimentaria Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 21

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