Temat: bio-engineering - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Canola oil electooxitadion on smooth platinum electrode
Autorzy:: Włodarczyk, P.
Włodarczyk, B.
Powiązania:: https://bibliotekanauki.pl/articles/101329.pdf
Data publikacji:: 2018
Wydawca:: Polska Akademia Nauk. Stowarzyszenie Infrastruktura i Ekologia Terenów Wiejskich PAN
Tematy:: canola oil
bio-fuel
fuel cell
renewable energy sources
environment engineering
Opis:: As fuel for fuel cells can be used various substances, but mainly fuel cells are powered by clear hydrogen (or hydrogen obtained from organic substances by reforming process). However, problems with the storage of hydrogen are the reason for the search of new fuels for fuel cells. Due to development of the renewable energy sources, the powering of fuel cells with bio-fuels is very important. Vegetable oil is an alternative fuel for diesel engines and for heating oil burners. Powering high efficiency power sources like fuel cells with renewable fuels (like canola oil) will allow development of renewable energy sources and elimination or reduce of toxic substances emissions. The paper presents the possibility of using canola oil as fuel for direct electricity production. The work shows possible electrooxidation of canola oil emulsion on a smooth platinum electrode in an solution of H2SO4. The resulting current density of canola oil electrooxidation reached the maximum level of 8 mA/cm2. So, the possibility of using canola oil as fuel for direct electricity production has been proved.
Źródło:: Infrastruktura i Ekologia Terenów Wiejskich; 2018, III/1; 589-598
1732-5587
Pojawia się w:: Infrastruktura i Ekologia Terenów Wiejskich
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Zmiany dyskursu o inżynierii społecznej pod wpływem pierwszej i drugiej wojny światowej jako czynnik stabilizaji/destablilizacj ładu międzynarodowego
Changes in the Discourse on the Social Engineering Influenced by WW1 and WW2 as a Destabilising/Stabilising Factor of the International Order
Autorzy:: Madajczyk, Piotr
Powiązania:: https://bibliotekanauki.pl/articles/1601582.pdf
Data publikacji:: 2016
Wydawca:: Uniwersytet Szczeciński. Wydawnictwo Naukowe Uniwersytetu Szczecińskiego
Tematy:: public health
public hygiene
racism
eugenics
national state
ethnic cleansing
bio-politics
social engineering
zdrowie publiczne
higiena publiczna
rasizm
eugenika
państwo narodowe
czystki etniczne
biopolityka
inżynieria społeczna
Opis:: W końcu XIX wieku nabrał na sile dyskurs o inżynierii społecznej jako narzędziu kształtowania nowoczesnych społeczeństw. W dalszych rozważaniach interesować będzie nas pytanie, jak powiązanie między polityką i nauką – zawężone do relacji między geopolityką a biopolityką i czystkami etnicznymi – funkcjonowało po pierwszej i drugiej wojnie światowej, a szczególnie w jaki sposób wpływało stabilizująco albo destabilizująco na ład międzynarodowy.
The discourse on the social engineering as an instrument of shaping modern societies gained strength at the end of the 19th century. In further deliberations the attention is paid to the question of how the connection between politics and science – restricted to the relation between geopolitics, bio-politics and ethnic cleansing – functioned after WW1 and WW2, and particularly how it affected the international order.
Źródło:: Studia Maritima; 2016, 29; 203-215
0137-3587
2353-303X
Pojawia się w:: Studia Maritima
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Carnassiform notches improve the functional efficiency of bat molar shearing crests
Autorzy:: Czaplewski, Nicholas J.
Baker, Charles G.
Powiązania:: https://bibliotekanauki.pl/articles/2216220.pdf
Data publikacji:: 2022
Wydawca:: Polska Akademia Nauk. Instytut Paleobiologii PAN
Tematy:: Mammalia
Chiroptera
dental morphology
functional morphology
functional design
molars
talonid cests
shearing blades
bio-engineering
Opis:: We surveyed molar surface morphology of bats of 281 extant and extinct species in 5 archaic and 19 extant families using scanning microscopy. We note the occurrence of structural features on talonid crests, the cristid obliqua, postcristid, and entocristid, and their absence in upper molars, even of the same species having them on lowers. We term the structures “carnassiform notches” (CN) for their resemblance to similar features on the carnassial teeth of carnivorans. A CN consists of a small cleft in the edge of a talonid shearing crest accompanied by an adjacent “accessory trough” on the basinward side of the notch. The CN occur in bats with tribosphenic molar morphology and insectivorous or insectivorous–omnivorous dietary habits. Of 19 extant families examined, eight include members that possess lower molars with a CN in at least the cristid obliqua: Megadermatidae, Nycteridae, Mystacinidae, Furipteridae, Thyropteridae, Phyllostomidae, Natalidae, and Vespertilionidae (Murininae and Kerivoulinae only). An extinct genus of Hipposideridae, Vaylatsia, shows CN although extant hipposiderids do not. In extinct families for which lower molar fossils are available, notches were not recognized on the talonids, indicating the condition is not plesiomorphic for bats and probably evolved convergently in different lineages. Where present, the CN or troughs are morphologically consistent within a family, and might serve in some cases as characters supporting phylogenetic analyses and clade diagnoses. CN and accessory troughs probably increase the functional efficiency at sectioning chitin by increasing the effective length of a crest while maintaining the same cusp-to-cusp distance and precise occlusal relationships, and by improving the food-capture area of the shearing blade during occlusion. The accessory troughs provide an immediately adjacent fragment-clearance area. The increased sophistication of this food-processing system might be particularly important in species that must quickly acquire, chew, and swallow their food and resume echolocating in flight. The common ancestor of bats probably did not have CN in its molars, and the presence of CN does not signal carnivory in bats.
Źródło:: Acta Palaeontologica Polonica; 2022, 67, 1; 257-282
0567-7920
Pojawia się w:: Acta Palaeontologica Polonica
Dostawca treści:: Biblioteka Nauki

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