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    Wyświetlanie 1-76 z 76
    Tytuł:
    MOURNING AND THE MOVIE SPIRITS’ HOMECOMING
    영화 <귀향>과 애도
    ŻAŁOBA I CIERPIENIE W FILMIE SPIRITS’ HOMECOMING
    Autorzy:
    JO, Seyon
    Powiązania:
    https://bibliotekanauki.pl/articles/1040225.pdf
    Data publikacji:
    2017-07-08
    Wydawca:
    Uniwersytet im. Adama Mickiewicza w Poznaniu
    Tematy:
    żałoba
    Derrida
    (nie)możność
    kobiety-pocieszycielki
    nacjonalizm
    Mourning
    (im)possibility
    Comfort Women
    Nationalism
    Opis:
    The movie Spirits’ Homecoming connects the past and the present through two Korean “comfort women” and reveals their life, anguish and mourning. Based on Derrida’s concept of mourning, this paper analyzes mourning of the main characters and the movie. Furthermore, it focuses on how Korean viewers reacted through mourning presented in Spirits’ Homecoming. By doing so, this paper criticizes how the film’s vivid representation of “comfort women” reflects patriarchal and nationalist ideologies which position the “comfort women” as the ultimate victims in Korean society.
    영화 <귀향>은 두 한국인 “위안부” 여성을 통하여 과거와 현재를 연결하며, 그들의 삶과 고뇌, 애도를 그려낸다. 본 논문에서는 데리다의 애도 개념을 바탕으로 주요 등장인물과 영화가 구현하는 애도를 분석하며, <귀향>에서 재현된 애도가 한국인 관객에게 미치는 영향 또한 논하고자 한다. 그 과정에서, 재현된 “위안부”의 이미지에 반영되어 있는 가부장적, 국가주의적 이데올로기가 어떻게 “위안부”를 한국 사회 내 궁극적인 피해자로 위치시키는지 분석하고자 한다.
    Film Spirits’ Homecoming łączy przeszłość i teraźniejszość za pośrednictwem sylwetek dwóch koreańskich kobiet i ujawnia ich życie, udrękę i żałobę. W oparciu o koncepcję żałoby Derridy, niniejszy artykuł analizuje żałobę głównych bohaterek filmu. Co więcej, koncentruje się na tym, jak koreańscy widzowie zareagowali na cierpienie prezentowane w Spirits’ Homecoming. Artykuł stanowi także swoistą krytykę sposobu odzwierciedlenia panujących ideologii patriarchatu i nacjonalizmu w omawianym filmie przy pomocy złożoności problemu kobiet-pocieszycielek. Film bowiem wskazuje przypisany przez wzmiankowane ideologie status kobiet-pocieszycielek jako ofiar.
    Źródło:
    International Journal of Korean Humanities and Social Sciences; 2017, 3; 105-116
    2449-7444
    Pojawia się w:
    International Journal of Korean Humanities and Social Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effect of Gender on Stressful Experiences of First Year Students. An inside from a public university in Kenya.
    Autorzy:
    Aloka, Peter JO
    Powiązania:
    https://bibliotekanauki.pl/articles/2232458.pdf
    Data publikacji:
    2023-07-17
    Wydawca:
    Academicus. International Scientific Journal publishing house
    Tematy:
    gender
    stressful experiences
    first year students
    public university
    Opis:
    The present study examined the effect of gender on stressful experiences of first year students in one selected public university in Kenya. A cross-sectional survey design was adopted to guide data collection. The participants were one hundred and ninety eight first year students (198) at one university. Quantitative data was obtained using Stress Questionnaire. Inferential analysis by use of independent t-test was used to test hypothesis. The findings indicated that there are significant gender differences in stressful experiences on academic demands, psychological and social relationship and financial difficulties among the first year university students. Therefore, this implies that Dean of students at universities should design support mechanisms to support female students in coping with stressors as new students.
    Źródło:
    Academicus International Scientific Journal; 2023, 14, 28; 75-88
    2079-3715
    2309-1088
    Pojawia się w:
    Academicus International Scientific Journal
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Partnerships
    Autorzy:
    Carby-Hall, Jo
    Powiązania:
    https://bibliotekanauki.pl/articles/506615.pdf
    Data publikacji:
    2010
    Wydawca:
    Krakowska Akademia im. Andrzeja Frycza Modrzewskiego
    Źródło:
    Krakowskie Studia Międzynarodowe; 2010, 3; 31-41
    1733-2680
    2451-0610
    Pojawia się w:
    Krakowskie Studia Międzynarodowe
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Spaces of ANRs
    Autorzy:
    Ball, B.
    Ford, Jo
    Powiązania:
    https://bibliotekanauki.pl/articles/1377510.pdf
    Data publikacji:
    1972
    Wydawca:
    Polska Akademia Nauk. Instytut Matematyczny PAN
    Źródło:
    Fundamenta Mathematicae; 1972-1973, 77, 1; 33-49
    0016-2736
    Pojawia się w:
    Fundamenta Mathematicae
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The ‘ultimate toponym’ and national imaginaries in Georgia and Azerbaijan: Constraining Imaginaries of Borchali among Georgian Azeri-Turks
    Autorzy:
    Storm, Karli-Jo T.
    Powiązania:
    https://bibliotekanauki.pl/articles/1199456.pdf
    Data publikacji:
    2020-09-30
    Wydawca:
    Uniwersytet Gdański. Instytut Geografii
    Tematy:
    national imaginary
    political toponyms
    contested territories
    Borchali
    South Caucasus
    Opis:
    A central component of any national imaginary is the extent to which it is or can be made marketable and consumable by audiences within and outside of the borders of the territorial state. Physical and symbolic delimitation of the “homeland” – in 2- and 3-D, on the ground and on maps, in speech and in individual thought processes - facilitates a certain degree of intra-group solidarity and out-group wariness. After expanding upon the theoretical utility of the concept of the national imaginary, the author examines the role played by the “ultimate toponym”, that of the bounded and institutionalized nation-state, in reifying dominant national imaginaries in Georgia and Azerbaijan. A further aim of this article is to demonstrate the ways that popular and elite-centric conceptions of Azerbaijani and/or Georgian nation-hood stymie Georgian Azeri-Turks’ abilities to imagine alternate forms of identification and belonging, using the phantom territory of “Borchali” as a key example.
    Źródło:
    Journal of Geography, Politics and Society; 2020, 10, 3; 16-28
    2084-0497
    2451-2249
    Pojawia się w:
    Journal of Geography, Politics and Society
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Spaces of ANRs. II
    Autorzy:
    Ball, B.
    Ford, Jo
    Powiązania:
    https://bibliotekanauki.pl/articles/1376484.pdf
    Data publikacji:
    1973
    Wydawca:
    Polska Akademia Nauk. Instytut Matematyczny PAN
    Źródło:
    Fundamenta Mathematicae; 1973, 78, 3; 209-216
    0016-2736
    Pojawia się w:
    Fundamenta Mathematicae
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effectiveness of Mnemonic Instruction in Enhancing of Reading Ability Among Grade Three Learners with Dyslexia in Two Primary Schools in South Africa
    Autorzy:
    Zindoga, Lilian
    JO Aloka, Peter
    Powiązania:
    https://bibliotekanauki.pl/articles/23592833.pdf
    Data publikacji:
    2024-01-02
    Wydawca:
    Academicus. International Scientific Journal publishing house
    Tematy:
    mnemonic instruction
    reading ability
    learners
    dyslexia
    primary schools
    Opis:
    This study examined the effectiveness of the mnemonic instruction in enhancing reading abilities among grade three learners with dyslexia in two public primary schools in Mpumalanga, South Africa. The Skinner’s reinforcement and the Information Processing theories were employed. A quasi-experimental design with one control group and one experimental group was used. Two schools, one was an intervention and was control one. A sample size of 43 learners was obtained in the two selected schools using purposive sampling technique. 23 parents (from the intervention school) participated in the questionnaires. The tools used were the Bangor Dyslexia Test, pre- and post- tests, and a reading comprehension test. The results revealed that there was a statically significant difference between pre-test and post-test scores for the experimental group, t (22) = -10.753; p <.001, suggesting that mnemonic instruction is highly effective in enhancing reading abilities among primary school learners with dyslexia. The study recommends that the Department of Basic Education should revise the policy that reading is tested from grade one, instead of from grade three, that those who are not able to read do not proceed until and unless they are able to read, and to train teachers on how to use various approaches to enhance reading abilities, including mnemonic techniques.
    Źródło:
    Academicus International Scientific Journal; 2024, 15, 29; 157-173
    2079-3715
    2309-1088
    Pojawia się w:
    Academicus International Scientific Journal
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Developed reliability-based interaction curves foe design of reinforced concrete columns
    Zmodyfikowane, niezawodnościowo zorientowane krzywe obciążeniowe w projektowaniu wzmacnianych kolumn betonowych
    Autorzy:
    Akindahunsi, A.A.
    Afolayan, J.O.
    Powiązania:
    https://bibliotekanauki.pl/articles/279342.pdf
    Data publikacji:
    2009
    Wydawca:
    Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
    Tematy:
    structural design
    reinforced concrete column
    reliability level
    interaction curves
    safety indices
    Opis:
    The provision of a safe structural system is a major object of structural designs. Due to uncertainties of varying magnitudes associated with loadings, the material and geometrical properties, current design methods that are not fully based on the probability concept are not able to yield a constant reliability level. This paper examined the criteria of British Standard Code of Practice (BS 8110, 1997) currently in use in Nigeria, for the design of reinforced concrete columns subjected to axial and bending loads using the probability-based concept. In order to offer designs capable of maintaining a predefined safety level, a computer program in FORTRAN language was developed. The modules in the program were based on BS 8110 (1997) design requirements and the First Order Reliability Method. Individual parameters were considered random with practical probability distributions. The program starts with a preliminary design and iteratively selects values of the design variables that lead to the predefined safety level. Interaction curves were plotted for varying safety indices. On the curves, design decisions relating to ratios of dead to live loads, effective to the gross depth of a section and reinforcement can be made. In contrast to the current method of BS 8110 (1997), the proposed design curves guide the designer to the knowledge of the expected level of safety of the section being designed.
    Dostarczenie zamawiającemu konstrukcji spełniającej wymogi bezpieczeństwa jest jednym z głównych celów projektowania. Z powodu niepewności co do wartości spodziewanych obciążeń oraz rozkładu materiałowych i geometrycznych parametrów da- nego obiektu, konstruowanie nie oparte całkowicie na rachunku prawdopodobieństwa nie jest w stanie zapewnić jednoznacznego wyniku ze stałym poziomem niezawodności. W niniejszej pracy dokonano analizy brytyjskiej normy zarządzania ryzykiem, tzw. British Standard Code of Practice BS 8110 z 1997 r., która opiera się na rachunku prawdopodobieństwa i obecnie jest stosowana w Nigerii przy projektowaniu wzmacnianych kolumn betonowych przenoszących obciążenie osiowe i gnące. Do tworzenia konstrukcji mogących zapewnić utrzymanie założonego poziomu bezpieczeństwa ułożono program komputerowy w języku FORTRAN. Moduły tego programu oparto właśnie na zaleceniach BS 8110 oraz procedurze iteracyjnej analizy niezawodności pierwszego rzędu (tzw. FORM). Poszczególne parametry potraktowano jako wartości losowe z obserwowanymi w praktyce rozkładami prawdopodobieństwa. Opracowany program rozpoczyna działanie od sformułowania konstrukcji wstępnej i iteracyjnie dobiera wartości zmiennych parametrów konstrukcyjnych, zmierzając do uzyskania założonego poziomu bezpieczeństwa. W artykule, otrzymane krzywe obciążeniowe narysowano dla różnych wskaźników bezpieczeństwa. Na ich podstawie można podjąć decyzje projektowe dotyczące stosunku ciężaru własnego do użytkowego oraz w konsekwencji parametrów przekroju i wzmocnienia. W odróżnieniu od procedury według dotychczasowo stosowanej normy BS 8110, krzywe obciążeniowe interakcji moment gnący – siła osiowa zaprezentowane w tej pracy dają konstruktorowi jednoznaczną znajomość oczekiwanego poziomu bezpieczeństwa projektowanego przekroju kolumny.
    Źródło:
    Journal of Theoretical and Applied Mechanics; 2009, 47, 4; 943-955
    1429-2955
    Pojawia się w:
    Journal of Theoretical and Applied Mechanics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Change In Microstructure and Mechanical Properties Of Four-Layer Stack ARB Processed Complex Aluminum Sheet with Annealing
    Autorzy:
    Jo, Sang-Hyeon
    Lee, Seong-Hee
    Powiązania:
    https://bibliotekanauki.pl/articles/2049296.pdf
    Data publikacji:
    2021
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    accumulative roll bonding
    heterogeneous microstructure
    aluminum alloy
    electron back scatter diffraction
    annealing
    Opis:
    The four-layer stack accumulative roll bonding (ARB) process using AA1050, AA5052 and AA6061 alloy sheets is performed up to 2 cycles without a lubricant at room temperature. The sample fabricated by the ARB is a multi-layer complex aluminum alloy sheet in which the AA1050, AA5052 and AA6061 alloys are alternately stacked to each other. The changes of microstructure and mechanical properties with annealing for the-ARBed aluminum sheet are investigated in detail. The as-ARBed sheet shows an ultrafine grained structure, however the grain diameter is some different depending on the kind of aluminum alloys. The complex aluminum alloy still shows ultrafine structure up to annealing temperature of 250℃, but above 275℃ it exhibits a heterogeneous structure containing both the ultrafine grains and the coarse grains due to an occurrence of discontinuous recrystallization. This change in microstructure with annealing also has an effect on the change of the mechanical properties of the sample. Especially, the specimen annealed at 300℃ represents abnormal values for the strength coefficient K and work hardening exponent n value.
    Źródło:
    Archives of Metallurgy and Materials; 2021, 66, 3; 765-770
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Crystallization Behavior of Zr62Al8Ni13Cu17 Metallic Glass
    Autorzy:
    Jo, M. S.
    Lee, J. K.
    Powiązania:
    https://bibliotekanauki.pl/articles/353070.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    metallic glass
    crystallization
    kinetics
    amorphous
    Zr-based
    Opis:
    The crystallization behavior has been studied in Zr62Al8Ni13Cu17 metallic glass alloy. The Zr62Al8Ni13Cu17 metallic glass crystallized through two steps. The fcc Zr2Ni phase transformed from the amorphous matrix during first crystallization and then the Zr2Ni and residual amorphous matrix transformed into a mixture of tetragonal Zr2Cu and hexagonal Zr6Al2Ni phases. Johnson- Mehl-Avrami analysis of isothermal transformation data suggested that the formation of crystalline phase is primary crystallization by diffusion-controlled growth.
    Źródło:
    Archives of Metallurgy and Materials; 2017, 62, 2B; 1023-1026
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Plantarycyny - biosynteza, mechanizm działania i potencjał w zapewnianiu bezpieczeństwa żywności
    Plantaricins - biosynthesis, mode of action and potential in ensuring food safety
    Autorzy:
    Szafranska, J.O.
    Polak-Berecka, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/2129945.pdf
    Data publikacji:
    2020
    Wydawca:
    Polskie Towarzystwo Technologów Żywności
    Tematy:
    plantarycyny
    bezpieczeństwo żywności
    Lactobacillus plantarum
    operon plantarycyny
    Opis:
    Scharakteryzowano właściwości, strukturę oraz spektrum aktywności plantarycyn wytwarzanych przez niektóre szczepy Lactobacillus. Przedstawiono ich klasyfikację, mechanizm biosyntezy, modele działania na inne bakterie oraz stabilność. Plantarycyny są dość różnorodne pod względem właściwości fizykochemicznych, struktury i spektrum aktywności przeciwdrobnoustrojowej. Szczepy Lactobacillus plantarum zdolne do syntezy plantarycyn należą do mikroorganizmów najczę- ściej obecnych w fermentowanych produktach spożywczych, a także w napojach i innych wyrobach z dodatkiem mleka. Budowa cząsteczek, ich stabilność oraz mechanizm działania sprawiają, że plantary- cyny charakteryzują się skutecznym działaniem bakteriobójczym. Ze względu na niewielką oporność organizmów patogennych na te substancje mogą być one alternatywą dla wielu stosowanych obecnie związków o działaniu przeciwdrobnoustrojowym. Plantarycyny wpływają na zahamowanie wzrostu drob- noustrojów chorobotwórczych, a w konsekwencji na poprawę zdrowia człowieka. Z uwagi na coraz więk- sze zainteresowanie produktami naturalnymi plantarycyny mogą w przyszłości znaleźć zastosowanie w różnych gałęziach przemysłu. Wyniki badań dotyczące ich wykorzystania mogą stać się podstawą do projektowania efektywnych preparatów probiotycznych, kultur starterowych do produkcji fermentowanej żywności czy nowych metod zabezpieczania żywności, co w konsekwencji wpłynie na poprawę zdrowia i jakości życia człowieka.
    Źródło:
    Żywność Nauka Technologia Jakość; 2020, 27, 2; 38 - 49
    1425-6959
    Pojawia się w:
    Żywność Nauka Technologia Jakość
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Polska chce nowego traktatu : Unia Europejska : Jarosław Kaczyński chwali się w Brukseli sukcesami Polski. I wyraźnie powiedział, że zależy mu na nowej unijnej konstytucji
    Autorzy:
    Słojewska, Anna.
    Leinen, Jo.
    Szymański, Konrad.
    Powiązania:
    Rzeczpospolita 2007, nr 92, s. A10
    Data publikacji:
    2007
    Tematy:
    Kaczyński, Jarosław (1949- )
    Unia Europejska konstytucje
    Traktat o Unii Europejskiej
    Unia Europejska (UE)
    Konstytucja Europejska
    Projekty
    Opis:
    Zawiera komentarze: Jo Leinena, eurodeputowanego niemieckiej SPD, przewodniczącego Komisji Konstytucyjnej Parlamentu Europejskiego, Konrada Szymańskiego, eurodeputowanego PiS.
    Fot.
    Dostawca treści:
    Bibliografia CBW
    Artykuł
    Tytuł:
    “A Part of Me.” The Value of Dogs to Homeless Owners and the Implications for Dog Welfare
    „Część mnie”. Znaczenie psów dla bezdomnych właścicieli i konsekwencje dla ich dobrostanu
    «Часть меня». Значимость собак для бездомных владельцев и последствия для их оптимальных условий содержания
    Autorzy:
    Bailey, Chelsie
    Hockenhull, Jo
    Rooney, Nicola
    Powiązania:
    https://bibliotekanauki.pl/articles/21150518.pdf
    Data publikacji:
    2023
    Wydawca:
    Wydawnictwo Uniwersytetu Śląskiego
    Tematy:
    бездомность
    психическое здоровье
    отношения с владельцами собак
    социальная защита
    homelessness
    mental health
    dog-owner relationships
    welfare
    Opis:
    The UK homeless population is increasing. Companion animal ownership amongst homeless people is not uncommon, but the positive and negative consequences of this association for both humans and animals are unknown. We conducted semi-structured interviews with homeless dog owners covering how their dog impacted them, and how they met the dog’s welfare needs. Twenty-one homeless dog owners were recruited via a dog welfare charity that works with homeless people and their dogs. The interviews were transcribed and analysed thematically. Dogs were reported to provide similar benefits to dogs owned in households, but additionally owner believed they helped facilitate routine, assisted them through mental health issues and provided continuous emotional support. Owners noted difficulties accessing long- and short-term accommodation, and services, such as shops, due to their dog, and generally only entrusted other individuals to look after their dog in urgent cases. All the dogs were reported to receive veterinary care as needed, were treated against parasites, and fed adequately. The main concern expressed by owners was providing somewhere adequately warm and large for their dog to sleep, but we suggest access to a safe place to avoid frightening stimuli may also be important. During the interviews owners used the dog to facilitate discussion about themselves, allowing many to open-up about the difficulties of their past, and potential future. Our findings can be used to help direct how homeless charities can best help dog owners in the future.
    Население бездомных в Великобритании растет. Владение собаками среди бездомных людей не является чем-то необычным, но положительные и отрицательные последствия этого общения как для людей, так и для животных остаются неизвестными. Авторы статьи провели частично структурированные интервью с бездомными владельцами собак, чтобы выяснить, как собака повлияла на их жизнь и как они удовлетворяют потребности собак в обеспечении их оптимальных условий содержания. Двадцать один бездомный владелец собак был выбран благотворительной организацией, занимающейся благополучием собак и сотрудничающей с бездомными и их собаками. Интервью были расшифрованы и проанализированы по тематике. Отмечено, что собаки бездомных приносят такую же пользу, как и собаки в домашних хозяйствах, но владельцы также считали, что животные-компаньоны помогают в установлении повседневного распорядка жизни, помогают с проблемами психического здоровья и обеспечивают постоянную эмоциональную поддержку. Из-за своей собаки владельцы отметили трудности с доступом к долговременному и краткосрочному жилью, а также к услугам, таким как магазины, и, в общем, они доверяли уход за собакой только в случаях крайней необходимости. Все собаки получали необходимую ветеринарную помощь, проходили лечение от паразитов и получали соответствующий корм. Главной заботой, выраженной владельцами, было обеспечение собаке достаточно теплого и просторного места для сна, но авторы статьи предполагают, что также важен доступ к безопасному месту, чтобы избежать причин для страха. Во время интервью владельцы обращались к собаке, чтобы облегчить обсуждение о себе, что позволило многим рассказать о трудностях в прошлом и потенциальном будущем. Результаты исследований могут быть использованы, чтобы показать, как благотворительные организации для бездомных могут наилучшим образом помочь владельцам собак в будущем.
    Źródło:
    Zoophilologica. Polish Journal of Animal Studies; 2023, Veterinary Social Work. Numer specjalny; 1-32
    2719-2687
    2451-3849
    Pojawia się w:
    Zoophilologica. Polish Journal of Animal Studies
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Impact of prey field variability on early cod larval survival: a sensitivity study of a Baltic cod Individual-based Model
    Autorzy:
    Schmidt, J.O.
    Hinrichsen, H.-H.
    Powiązania:
    https://bibliotekanauki.pl/articles/48059.pdf
    Data publikacji:
    2008
    Wydawca:
    Polska Akademia Nauk. Instytut Oceanologii PAN
    Tematy:
    Baltic Sea
    individual-based model
    calanoid copepod
    Acartia
    larva
    Temora longicornis
    predator-prey interaction
    spatial variation
    biophysical model
    Centropages hamatus
    cod
    Pseudocalanus acuspes
    Baltic cod
    Opis:
    Existing coupled biophysical models for Baltic larval cod drift, growth and survival use idealised constructed mean prey fields of nauplius distributions. These simulations revealed the best feeding conditions for Baltic cod larvae longer than 6 mm. For shorter, first feeding larvae (between 4.5 and 6 mm) pronounced differences in growth and survival were observed, which depend on food availability and to a lesser degree on ambient temperature. We performed runs with an Individual-based Model (IBM) for Baltic cod larvae in order to demonstrate how natural variability in prey abundance influences the survival success of first feeding larvae. In the Baltic, this larval stage lives mainly between 20 and 40 m depth and feeds exclusively on the nauplii of different calanoid copepods (Acartia spp., Pseudocalanus acuspes, Temora longicornis and Centropages hamatus). Prey data obtained from vertically stratified samples in the Bornholm Basin (Baltic Sea) in 2001 and 2002 indicate a strong variability at spatial and temporal scales. We calculated larval survival and growth in relation to natural variation of prey fields, i.e. species-specific nauplius abundance. The results of the model runs yielded larval survival rates from 60 to 100% if the mean size of nauplii species was taken and lower survival if prey consisted of early nauplius stages only.
    Źródło:
    Oceanologia; 2008, 50, 2; 205-220
    0078-3234
    Pojawia się w:
    Oceanologia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Die Attachment Method on a Cu Finish by Pressure-Assisted Sinter Bonding in Air Using Cu Formate Paste
    Autorzy:
    Jo, Kyeong Hwan
    Lee, Jong-Hyun
    Powiązania:
    https://bibliotekanauki.pl/articles/351336.pdf
    Data publikacji:
    2020
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    die attach
    Cu formate paste
    sinter bonding
    Cu finish
    shear strength
    Opis:
    A paste containing Cu(II) formate rods was prepared, and characteristics of sinter bonding at 250°C under a pressure of 10 MPa were investigated to accomplish a high-speed die attachment for wide-bandgap power chips on Cu finish in air. Synthesisn of the plate-type Cu formate particles from CuO was accomplished through a wet reaction for 180 min. Cu, formed in situ in the bondline by pyrolysis of the formate during heating for the attachment, was sufficiently active to lead high-speed sintering within a carbon dioxide-hydrogen atmosphere derived from the pyrolysis, and the oxide layer on the Cu finish was reduced by the hydrogen. As a result, sinter bonding for 10 min formed a robust bonding with a shear strength approaching 27 MPa.
    Źródło:
    Archives of Metallurgy and Materials; 2020, 65, 3; 1057-1061
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Refinable maps
    Autorzy:
    Ford, Jo
    Rogers, Jr., J. W.
    Powiązania:
    https://bibliotekanauki.pl/articles/727684.pdf
    Data publikacji:
    1978
    Wydawca:
    Polska Akademia Nauk. Instytut Matematyczny PAN
    Źródło:
    Colloquium Mathematicum; 1978, 39, 2; 263-269
    0010-1354
    Pojawia się w:
    Colloquium Mathematicum
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A multi-stakeholder and interdisciplinary approach to waste management and circular economy: The case of Flanders and Ghent, Belgium
    Autorzy:
    Acke, Arianne
    Taelman, Sue Ellen
    Dewulf, Jo
    Powiązania:
    https://bibliotekanauki.pl/articles/1019494.pdf
    Data publikacji:
    2020-12-30
    Wydawca:
    Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego
    Tematy:
    Resources and waste management
    circular economy
    organic waste
    Flanders
    Ghent
    Living Lab
    Eco-innovative solutions
    Opis:
    In 2016, the Flemish Government adopted the transversal policy paper “Vision 2050, a long term strategy for Flanders”. It has set the ambition for Flanders for 2050 and has paved the way for a transition to a Circular Economy. It provided new objectives and confirmed the ambition to further reduce the total amount of (residual) waste by closing the loop and reducing the use of primary resources. More than before, prevention and reuse have been an integral part of materials management. The impact of waste behaviour needs to be measured against environmental and social priorities. In this context, the REPAiR project developed a multi-stakeholder and interdisciplinary methodology. Building on this methodology, this paper explores how governance in Flanders and Ghent has been affected by this transition and draws lessons to address these challenges.
    Źródło:
    European Spatial Research and Policy; 2020, 27, 2; 43-57
    1231-1952
    1896-1525
    Pojawia się w:
    European Spatial Research and Policy
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Feeding ecology of sprat (Sprattus sprattus L.) and sardine (Sardina pilchardus W.) larvae in the German Bight, North Sea
    Autorzy:
    Voss, R.
    Dickmann, M.
    Schmidt, J.O.
    Powiązania:
    https://bibliotekanauki.pl/articles/47806.pdf
    Data publikacji:
    2009
    Wydawca:
    Polska Akademia Nauk. Instytut Oceanologii PAN
    Tematy:
    German Bight
    sprat
    coexistence
    Sprattus sprattus
    North Sea
    habitat preference
    food competition
    Sardina pilchardus
    larva
    sardine
    feeding ecology
    Opis:
    The abundance of the sardine in the North Sea suddenly increased after 1995. Since 2002, the sardine has been spawning regularly in the German Bight, and all its life stages can be found in the area. The larval feeding ecology of two small pelagic clupeiform species with very similar life histories was investigated, the particular aim being to determine signs of food overlap. The distribution and feeding of sprat and sardine larvae were investigated during late spring 2003 on two transects covering a wide range of environmental conditions in the German Bight. Larvae co-occurred at all the stations investigated. Sprat and sardine larvae shared a wide range of prey types. Gut fullness and feeding success were similar in both species; however, potential food competition is avoided to some extent by different habitat preferences.
    Źródło:
    Oceanologia; 2009, 51, 1; 117-138
    0078-3234
    Pojawia się w:
    Oceanologia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Hemul (Hippocamelus bisulcus) - problemy ochrony ginącego jelenia z Patagonii
    Hemul (Hippocamelus bisulcus) - problems of protection of the endangered deer from Patagonia
    Autorzy:
    Giżejewski, Zygmunt
    Smith-Flueck, Jo
    Flueck, Werner
    Powiązania:
    https://bibliotekanauki.pl/articles/1034087.pdf
    Data publikacji:
    2017
    Wydawca:
    Polskie Towarzystwo Przyrodników im. Kopernika
    Tematy:
    farm breeding
    gene bank
    hemul (Hippocamelus bisulcus)
    reintroduction
    species protection
    Hemul (Hippocamelus bisulcus)
    ochrona gatunków
    hodowla fermowa
    bank genów
    reintrodukcja
    Opis:
    Patagoński hemul (Hippocamelus bisulcus) należy do rodziny jeleniowatych (Cervidae) i jest klasyfikowany jako gatunek zagrożony wyginięciem. Obecna jego populacja wynosi 350-500 w Argentynie i 1.000 sztuk w Chile i jest skupiona w ponad 100 grupach rodzinnych. Ze względu na postępujący spadek liczebności konieczne jest utworzenie centrum hodowlanego, gdzie poza rozmnażaniem hemuli i ich wypuszczaniem do natury, będą prowadzone badania naukowe nad biologią tego słabo poznanego gatunku. Posiadanie zwierząt wychowanych na butelce pozwoli na pobieranie nasienia przy użyciu sztucznej pochwy i na utworzenie banku genów, nasienia zamrożonego w ciekłym azocie (LN2).
    Patagonian hemul (Hippocamelus bisulcus) is a member of the deer family (Cervidae) classified as an endangered species. The size of its population, estimated at 350-500 heads in Argentina and at 1000 in Chile, is distributed in over 100 family groups. Taking into account the gradually decreasing number of specimens, it is necessary to establish a captive breeding center. Besides reproduction and reintroduction to the natural environment, the center will help also to conduct scientific investigations on this poorly known species. Tamed animals reared on the bottle will allow to collect semen using artificial vagina, and would provide an opportunity to establish a live semen bank protected in liquid nitrogen (LN2), as a reserve of genes.
    Źródło:
    Kosmos; 2017, 66, 3; 449-456
    0023-4249
    Pojawia się w:
    Kosmos
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Entering Iranian Homes: Privacy Borders and Hospitality in Iranian Movies
    Autorzy:
    Mohammadi, Foroogh
    van den Scott, Lisa-Jo K.
    Powiązania:
    https://bibliotekanauki.pl/articles/32222599.pdf
    Data publikacji:
    2023
    Wydawca:
    Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego
    Tematy:
    Frontstage
    Backstage
    Privacy
    Space and Place
    Iranian Cinema
    Hospitality
    Opis:
    The architecture of homes in Iran has changed significantly over the past four decades since the 1979 Iranian revolution. We ask how these architectural changes shift neighborhood relationships and how they transform the Iranians’ hospitality rituals and practices. We conducted a qualitative content analysis of eighteen Iranian movies filmed after the 1979 revolution. They allowed us to make comparisons among various dwelling patterns and neighborhood relationships. We argue that the representations of neighborhood relationships reflect these changes, demonstrating the impact of architecture on interactions. Our focus in this article is on borders of privacy, power dynamics in the neighborhoods and among families, and communication forms to better understand the impact of changing architecture on hospitality through the lens of cinema. Additionally, we engage with Goffman’s (1956) concepts of frontstage and backstage, demonstrating that these are not dichotomous, although they are opposites, and there can be a thinning of frontstage along with a thickening of backstage. Entrances to homes are often gradual, and visitors may gradually penetrate through layers of the frontstage as they become closer (emotionally and in space) to the heart of the home’s (and its occupants’) backstage.
    Źródło:
    Qualitative Sociology Review; 2023, 19, 2; 50-73
    1733-8077
    Pojawia się w:
    Qualitative Sociology Review
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Influence of vehicular traffic on air permeability and groundnut production in a semi-arid sandy loam soil
    Autorzy:
    Ohu, J.O.
    Mamman, E.
    Muni, U.B.
    Powiązania:
    https://bibliotekanauki.pl/articles/26496.pdf
    Data publikacji:
    2006
    Wydawca:
    Polska Akademia Nauk. Instytut Agrofizyki PAN
    Tematy:
    air permeability
    production
    groundnut
    tillage
    agriculture
    soil
    compaction
    semi-arid sandy loam soil
    mechanization
    vehicular traffic
    Źródło:
    International Agrophysics; 2006, 20, 4
    0236-8722
    Pojawia się w:
    International Agrophysics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Comparative reproduction mechanisms of three species of Ocimum L. (Lamiaceae)
    Porównanie mechanizmów reprodukcji trzech gatunków z rodzaju Ocimum L. (Lamiaceae)
    Autorzy:
    Oziegbe, M.
    Kehinde, T.O.
    Matthew, J.O.
    Powiązania:
    https://bibliotekanauki.pl/articles/27039.pdf
    Data publikacji:
    2016
    Wydawca:
    Polskie Towarzystwo Botaniczne
    Opis:
    Ocimum species have a combination of reproductive system which varies with the locality and cultivar. We have studied here the reproductive mechanisms of five variants of three Ocimum species in Nigeria, namely: Ocimum canum Sims., O. basilicum L., and O. americanum L. Flowers from each variant were subjected to open and bagged pollination treatments of hand self-pollination, spontaneous selfpollination and emasculation. All open treatments of the five Ocimum variants produced more fruit and seed than the corresponding bagged treatments. The two O. canum variants and O. basilicum ‘b1’ produced high fruit and seed set in the open and bagged treatments of spontaneous self-pollination. Ocimum basilicum ‘b2’ and O. americanum produced higher fruit and seed set in the self-pollination open treatment but significantly lower fruit and seed set in the bagged treatment. Fewer fruit and seeds were produced in the emasculated open treatments but none in the emasculated bagged treatments of the five Ocimum variants. The floral foragers comprising of bees, wasps and butterflies visited the Ocimum species to collect pollen or nectar in the open treatments. The two O. canum variants and O. basilicum ‘b1’ variant reproduced mainly through autogamy but O. basilicum ‘b2’ and O. americanum showed mixed reproduction of autogamy and outcrosssing. Insect visitation to the flowers enhanced pollination resulting in higher fruit and seed set in all the Ocimum species studied.
    Gatunki z rodzaju Ocimum, zależnie od występowania i odmiany, reprezentują różne systemy reprodukcyjne. W pracy badano systemy reprodukcyjne trzech gatunków Ocimum canum Sims., O. basilicum L. i O. americanum L. Badania prowadzono w Nigerii. Zastosowano następujące sposoby zapylania: zapylanie swobodne (z udziałem owadów zapylających) oraz pod izolatorem (dopylanie pyłkiem własnym, spontaniczne samozapylanie z usuwaniem pylników). Wszystkie gatunki produkowały więcej owoców i nasion w warunkach swobodnego dostępu owadów do kwiatów. Kwiaty O. canum i O. basilicum ‘b1’ swobodnie dostępne dla owadów oraz spontanicznie samozapylane pod izolatorami produkowały najwięcej owoców i nasion. Ocimum basilicum ‘b2’ oraz O. americanum produkowały najwięcej owoców i nasion podczas samozapylenia z kwiatów nieizolowanych, istotnie mniej owoców i nasion powstawało z kwiatów izolowanych od owadów. Mniej owoców uzyskiwano z kwiatów nieizolowanych, z których usuwano pylniki. Kwiaty Ocimum, izolowane bez pylników, nie wiązały nasion i nie tworzyły owoców. Owady odwiedzające kwiaty badanych gatunków z rodzaju Ocimum (pszczoły, osy, motyle) korzystały z nektaru lub pyłku. Ocimum canum i O. basilicum ‘b1’ rozmnażają się głównie autogamicznie. Ocimum basilicum ‘b2’ oraz O. americanum wykazują mieszane systemy reprodukcyjne (autogamia oraz zapylenie krzyżowe). W przypadku wszystkich badanych gatunków z rodzaju Ocimum, owady wspomagają zapylenie, powodując wzrost produkcji owoców i wiązanych nasion.
    Źródło:
    Acta Agrobotanica; 2016, 69, 1
    0065-0951
    2300-357X
    Pojawia się w:
    Acta Agrobotanica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Phytochemical screening and in vitro antimicrobial properties of Annona muricata extracts against certain human pathogens
    Autorzy:
    Oluyege, J.O.
    Orjiakor, Paul Ikechukwu
    Badejo, O.E.
    Powiązania:
    https://bibliotekanauki.pl/articles/135020.pdf
    Data publikacji:
    2019
    Wydawca:
    Akademia Morska w Szczecinie. Wydawnictwo AMSz
    Tematy:
    Annona muricata
    pathogens
    bacteria
    fungi
    antibiotics
    medicinal plants
    Opis:
    All over the world, the use of medicinal plants is gaining more acceptability due to the possibility of discovering novel drugs from them and solving the problem of antimicrobial resistance associated with conventional antibiotics. The phytochemical composition and antimicrobial properties of crude extracts of the leaves, stems, and bark of Annona muricata were evaluated on Escherichia coli, Staphylococcus aureus, and Salmonella typimurium, while the antifungal properties were evaluated against Candida albicans and Candida tropicalis. The Agar well method was used for the study. At concentrations of 150 mg/ml and 300 mg/ml, inhibitory effects were observed on E. coli and S. aureus, with a visible zone of inhibition ranging from 15 mm to 21 mm respectively, and with respect to N- hexane, an antimicrobial activity range of 5 mm to 20 mm, for the leaf extract, which shows effective antimicrobial action against E. coli and S. aureus. Hot water extracts were observed to possess more bioactive compounds compared to organic solvent extracts, and exhibit higher ranges of activity against the tested bacterial species. All extracts exhibited low anti-fungal activity in the range of 8 mm to 15 mm. The phytochemical screening of the extracts of different parts of A. muricata revealed the presence of secondary metabolites such as tannins, alkaloids, saponins, flavonoids, steroids, and cardiac glycosides. The antimicrobial activity of the extracts was compared with a standard antibiotic, ketoconazole, and with ampicillin, which served as the controls). The results showed that A. muricata can be used as an anti-bacterial substance, since it shows broad spectrum activity against a range of bacteria responsible for the most common bacterial illnesses. Further research will be necessary to ascertain its full spectrum of efficacy.
    Źródło:
    Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2019, 60 (132); 203-209
    1733-8670
    2392-0378
    Pojawia się w:
    Zeszyty Naukowe Akademii Morskiej w Szczecinie
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Influence of subgrade soil on pavement performance: a case study of Ago-Iwoye-Ilishan road, southwestern Nigeria
    Autorzy:
    Fatoba, J.O.
    Sanni, A.O.
    Ayantunji, A.B.
    Powiązania:
    https://bibliotekanauki.pl/articles/11755.pdf
    Data publikacji:
    2015
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Opis:
    Ago-Iwoye –Ilisan road is the major road that links Abeokuta the state capital of Ogun –state to Ijebu towns. The road has always been experiencing pavement failure, which occurs inform of cracks and potholes. Being the major road, the effect of the failure has negative impact on the soicoeconomic growth of Ijebu –areas. The primary objective of the study was to determine the influence of the geotechnical properties of the sub-grade materials on the pavement performance of Ago- Iwoye – Ilishan Road. Eleven (11) soil samples were collected at eight (8) different locations with the aid of hand auger and were air-dried before taken to the laboratory for determination of engineering properties. The Liquid limit and the Plastic limits ranged from 13.9 – 46.2% and 8.1 – 32.7%, with the Plasticity index from 10.6 – 15.9% and Shrinkage limit from 6.2 – 27.7% respectively. The soaked CBR values of the subgrade materials is between 67% and 75% compared with 30% minimum specified by FMWH, 1997. The soils were classified by ASSHTO under the A-6 and A-7 category which shows that the soils are fair to poor as a sub-grade material and USCS classification shows that the soil falls into the SM and SC group. The comparison of all the results with the Nigeria specification (Federal Ministry of Works and Housing general guidelines) for the sub grade materials along the Ago-Iwoye- Ilisian road show that the materials underlain the pavement do satisfy the Nigeria standard. Therefore, the perennial failure frequently experience along the road route is not significantly influenced by subgrade materials. Hence, influence of other factors such as poor drainage courses, level of groundwater table, variation of geologic materials along the road route and poor construction materials should be thoroughly addressed before embarking on future rehabilitation of the highway.
    Źródło:
    International Letters of Natural Sciences; 2015, 38
    2300-9675
    Pojawia się w:
    International Letters of Natural Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Using geoelectric soundings for estimation of hydraulic characteristics of aquifers in the coastal area of Lagos, southwestern Nigeria
    Autorzy:
    Fatoba, J.O.
    Omolayo, S.D.
    Adigun, E.O.
    Powiązania:
    https://bibliotekanauki.pl/articles/11667.pdf
    Data publikacji:
    2014
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    geoelectrical parameter
    estimation
    hydraulic characteristics
    hydraulic parameter
    aquifer
    coastal area
    Lagos
    Nigeria
    Opis:
    Electrical resistivity investigation was carried out at Ibeju Lekki, Southwestern Nigeria. The thrust of this study is to determine the geoelectrical parameters of the shallow aquifer and estimate the hydraulic characteristics of this aquifer unit from the surface geophysics. The area falls within the Dahomey basin of the Nigeria sedimentary terrain. Twenty-one VES were conducted using Shlumberger array with a maximum half current electrode (AB/2) of 100 m giving total spread of 200 m. Data were interpreted using partial curve matching technique and assisted 1-D forward modeling with WINRESIST software. The qualitative interpretation revealed KQ curves (ρ1 < ρ2 > ρ3 > ρ4) and KH curve (ρ1 < ρ2 > ρ3 < ρ4). The geoelectric section generated from the results of the VES revealed a four geo-electric layers; these include topsoil with resistivity ranging from 213-5404 Ωm, dry sand with resistivity values vary from 301to 17178 Ωm, saturated sand with resistivity varying from 110 to1724 Ωm and sand (saline water content) with resistivity values of between 8 and 97 Ωm. The major aquifer in the area occurs at the third geoelectric layer. The depth to this aquifer is of between 0.7m and 6.0m and the layer thickness is between 0.2 m and 19.9 m. The hydraulic characteristics of the aquifer estimated from the geoelectric parameters reveal that the aquifer has porosity values of between 29.4 % and 57.7 %, protective capacities of between 0.00013 and 0.015 mhos, transverse resistance ranges from 345-18502 Ωm2, transmissivity values vary from 13 to 310 m2/day and hydraulic conductivity ranges from 0.8-65 m/day. The results show that the aquifer is characterized by high porosity and low protective capacities of overburden layers indicating that it is highly vulnerable to surface contamination. It has high transverse resistance, high transmissivity, and high hydraulic conductivity indicating that the aquifer can transmit water at higher rate and sustain the need of the community. This study has demonstrated the efficacy of surface geophysics in estimating hydraulic characteristics of an aquifer where pumping test data are not available and also to determine its vulnerability to surface contaminants.
    Źródło:
    International Letters of Natural Sciences; 2014, 06
    2300-9675
    Pojawia się w:
    International Letters of Natural Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Novel Technique to Produce Hybrid P/M Components Using Dissimilar Ferrous Alloys
    Autorzy:
    Oh, Min Chul
    Seok, Hyunjoo
    Jo, Yeongcheol
    Ahn, Byungmin
    Powiązania:
    https://bibliotekanauki.pl/articles/356957.pdf
    Data publikacji:
    2019
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    hybrid Fe alloy
    multi-compaction
    interface boundary
    diffusion behavior
    Opis:
    The objective of the present research is to develop the novel multi-compaction technology to produce hybrid structure in powder metallurgy (P/M) components using dissimilar Fe-based alloys. Two distinct powder alloys with different compositions were are used in this study: Fe-Cr-Mo-C pre-alloyed powder for high strength and Fe-Cu-C mixed powder for enhanced machinability and lower material cost. Initially, Fe-Cu-C was pre-compacted using a bar-shaped die with lower compaction pressure. The green compact of Fe-Cu-C alloy was inserted into a die residing a half of the die, and another half of the die was filled with the Fe-Cr-Mo-C powder. Then they subsequently underwent re-compaction with higher pressure. The final compact was sintered at 1120°C for 60 min. In order to determine the mechanical behavior, transverse rupture strength (TRS) and Vickers hardness of sintered materials were measured and correlated with density variations. The microstructure was characterized using optical microscope and scanning electron microscope to investigate the interfacial characteristics between dissimilar P/M alloys.
    Źródło:
    Archives of Metallurgy and Materials; 2019, 64, 2; 613-616
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Mobiline Peritrichs (Ciliophora) Collected from the Gills of African Limpets
    Autorzy:
    van As, Liesl L.
    Basson, Linda
    van As, Jo
    Powiązania:
    https://bibliotekanauki.pl/articles/52400198.pdf
    Data publikacji:
    2017
    Wydawca:
    Uniwersytet Jagielloński. Wydawnictwo Uniwersytetu Jagiellońskiego
    Tematy:
    Urceolaria
    Leiotrocha
    Mollusca
    Gastropoda
    Opis:
    Members of the Urceolariidae Dujardin, 1941 have been found associated with a wide variety of invertebrate hosts from freshwater and marine habitats. Five species have been described from molluscan hosts from Europe and America. This paper deals with an urceolariid (Leiotrocha Fabre-Domergue, 1888) collected from the gills of Cellana radiata capensis (Gmelin, 1791) and Scutellastra exusta (Reeve, 1854) from the east coast of South Africa, as well as Patella depressa Pennant, 1777 and Cymbula safiana (Lamarck, 1891) from the bulge (west coast) of Africa. A higher prevalence was found on C. radiata capensis (89%) and P. depressa (72%) compared to the other two hosts. The urceolariid collected from the African limpets was identified as L. patellae (Cuénot, 1891). This is the first record of an urceolariid from any African hosts, including representatives of the Mollusca. Five urceolariid species were identified and described from gastropods, i.e. L. patellae Cuénot, 1891,U. karyolobia Hirshfield, 1949, U. cellanae Suzuki, 1950, U. viridis Richards, 1971 and U. parakorschelti Irwin, Sabetrasekh and Lynn, 2017. Motivation is provided why U. cellanae and U. viridis should be reallocated to the genus Leiotrocha, and U. karyolobia not. The taxonomic validity of the recent description of U. parakorschelti from limpets is commented on.
    Źródło:
    Acta Protozoologica; 2017, 56, 4; 245-254
    0065-1583
    1689-0027
    Pojawia się w:
    Acta Protozoologica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Morphometric analysis of the developmental stages and insecticidal efficacy of three botanical oils against adult Callosobruchus analis
    Autorzy:
    Olufemi-Salami, F.K.
    Akinneye, J.O.
    Salami, O.S.
    Powiązania:
    https://bibliotekanauki.pl/articles/1950.pdf
    Data publikacji:
    2017
    Wydawca:
    Instytut Ogrodnictwa
    Źródło:
    Journal of Horticultural Research; 2017, 25, 2
    2300-5009
    Pojawia się w:
    Journal of Horticultural Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effects of packaging materials and storage periods on seed quality and longevity dynamics of Pericopsis elata seeds
    Autorzy:
    Tandoh, P.K.
    Banful, B.
    Gaveh, E.
    Amponsah, J.O.
    Powiązania:
    https://bibliotekanauki.pl/articles/10015.pdf
    Data publikacji:
    2017
    Wydawca:
    Fundacja na Rzecz Młodych Naukowców
    Tematy:
    packaging material
    storage period
    seed quality
    longevity
    Pericopsis elata
    African teak
    seed
    Opis:
    This study was carried out to determine the effects of packaging materials and storage periods on seed quality and longevity dynamics of an endangered tropical tree species, Pericopsis elata. The experimental period was December, 2015 to June, 2016. Seed collection was done at the Bobiri Forest Reserve. The seed storage experiment was set up using 3 x 6 factorial arrangements in Completely Randomized Design with three replications. Six packaging materials (jute, nylon, paper, ziplock bag, airtight bottle and no packaging) and three storage periods (no storage, three months storage and six months storage) were used. Germination percentage, seed vigour, 1000 seed weight, moisture content, carbohydrate, protein and oil contents were assessed before storage, three months and six months after storage. P. elata seeds with initial moisture content of 7.5% and packaged in airtight bottle and ziplock bags maintained their moisture contents even as storage periods increased. The initial amounts of seed carbohydrates (1.9%), proteins (37.4%) and oil (31.3%) were maintained in the airtight packaging materials (bottle and ziplock bag) thereby improving seed storability. The seed viability equation predicted that P. elata seeds could be stored for 243 years after six months of storage. Seed viability dropped to 164 days after the accelerated aging test was performed on the six-months old stored seeds. The study concluded that the seeds of this important endangered tree can be stored in airtight containers before the next planting season without any loss in seed quality.
    Źródło:
    Environment, Earth and Ecology; 2017, 1, 2
    2543-9774
    2451-4225
    Pojawia się w:
    Environment, Earth and Ecology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Imagined Engagements: Interpreting the Musical Relationship with the Canadian North
    Autorzy:
    van den Scott, Jeffrey
    van den Scott, Lisa-Jo K.
    Powiązania:
    https://bibliotekanauki.pl/articles/623367.pdf
    Data publikacji:
    2019
    Wydawca:
    Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego
    Tematy:
    Imagined Engagement
    Music
    Musical Language
    Interaction Order
    Inuit
    Opis:
    In this article, we extend Benedict Anderson’s notion of imagined communities to examine the idea of an “imagined engagement” between or among people and groups that have not met. These imagined engagements include a blurring of temporal lines, as one group “interacts” with another’s past, present, or future. Imagined engagements are a form of failed interaction, and, as such, have their place in Goffman’s interaction order. We argue that musical language can comprise a meeting point of these engagements. We then demonstrate how two composers-one historic and one contemporary-have used the musical cultures of an Othered people, with a focus on Indigenous America, in an attempt to create a sense of community and common ties between the West and these Others-a sense of community in which the Othered have no part.
    Źródło:
    Qualitative Sociology Review; 2019, 15, 2; 90-104
    1733-8077
    Pojawia się w:
    Qualitative Sociology Review
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Self-Consolidation Mechanism Of Porous Ti-6Al-4V Implant Prototypes Produced By Electro-Discharge-Sintering Of Spherical Ti-6Al-4V Powders
    Mechanizm autokonsolidacji prototypów porowatych implantów wytworzonych przez spiekanie sferycznych proszków Ti-6Al-4V
    Autorzy:
    Lee, W. H.
    Jo, Y. J.
    Kim, Y. H.
    Jo, Y. H.
    Seong, J. G.
    Van Tyne, C. J.
    Chang, S. Y.
    Powiązania:
    https://bibliotekanauki.pl/articles/356277.pdf
    Data publikacji:
    2015
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    Ti-6Al-4V
    implant
    porous
    sintering
    electrodischarge
    porowatość
    spiekanie
    proszki spiekane
    Opis:
    Electro-Discharge-Sintering (EDS) was employed to fabricate Ti-6Al-4V porous implant prototypes from atomized powders (100 – 150 μm), that were subjected to discharges of 0.75 to 2.0 kJ/0.7g-powder from 150, 300, and 450 μF capacitors. Both fully porous and porous-surfaced Ti-6Al-4V compacts with various solid core sizes were self-consolidated in less than 86 – 155 μsec. It is known that EDS can simultaneously produce the pinch pressure to squeeze and deform powder particles and the heat to weld them together. The formation of a solid core in these prototypes depends on the amounts of both the pinch pressure and heat generated during a discharge. The size of the solid core and the thickness of the porous layer can be successfully controlled by manipulating the discharge conditions such as input energy and capacitance.
    Źródło:
    Archives of Metallurgy and Materials; 2015, 60, 2B; 1185-1189
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Spatio-temporal variability in the Brazil-Malvinas Confluence Zone (BMCZ), based on spectroradiometric MODIS-AQUA chlorophyll-a observations
    Autorzy:
    Telesca, L.
    Pierini, J.O.
    Lovallo, M.
    Santamaria-del-Angel, E.
    Powiązania:
    https://bibliotekanauki.pl/articles/48518.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Instytut Oceanologii PAN
    Tematy:
    confluence zone
    environmental variation
    sea water
    phytoplankton
    spatio-temporal variability
    chlorophyll a
    ocean colour
    remote sensing
    Opis:
    The Brazil–Malvinas Confluence Zone (BMCZ) is characterized by high environmental variation, which could be reflected in several optical types of water, from one containing only phytoplankton and sea water to other optically more complex. In this paper, we analyze the spatio-temporal variability of the Chlorophyll-a detected by the ocean color sensor (CHLAsat) in BMCZ in order to understand its environmental variability. We use the MODIS-Aqua CHLAsat monthly composites imagery from 2002 to 2015, and applied two statistical methods: the correlogram-based robust periodogram to identify, over a broad spectrum of temporal, the most significant periodicities, and the pixel gradient distribution to study the spatial-temporal gradients within the BMCZ and variations over the continental shelf and coastal waters. Our results point out to the predominance of the annual cycle over most of the investigated area, although an area from latitude 37°S in direction NE, alongshore of Uruguay to Brazil, evidences interannual periodicities, possibly related to variations in the discharge of the Rio de la Plata associated with the El Niño phenomena. The ocean color spectroradiometric signature in terms of pixel gradient presents a relatively high variability (∼0.0 to 0.65 mg m−3); in particular the high values of the pixel gradient correspond to saline front of the estuarine system of Rio de la Plata, and to the strip of the platform that extends along the isobaths of 80 m (coast of Uruguay), especially in the center and south of the study area.
    Źródło:
    Oceanologia; 2018, 60, 1
    0078-3234
    Pojawia się w:
    Oceanologia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Numerical study of a cone mill for emulsion preparation: Hydrodynamics and population balance modelling
    Autorzy:
    Lupieri, Guido
    Bagkeris, Ioannis
    Janssen, Jo J.M.
    Kowalski, Adam J.
    Powiązania:
    https://bibliotekanauki.pl/articles/2086806.pdf
    Data publikacji:
    2021
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    cone mill
    CFD
    hydrodynamics
    population balance model
    młyn stożkowy
    hydrodynamika
    model bilansu populacji
    Opis:
    The work concerns numerical simulations of a cone mill used for emulsion preparation. Hydrodynamics, power consumption and population balance are investigated for various operating conditions at high phase volume emulsions and for different rheologies. Cone mills are usually simplified as a simple gap between rotor and stator but by increasing the complexity of the geometry till it represents the commercial device identifies a wealth of additional features such as recirculation zones above (which enhance breakage) and below (which allow for coalescence) the rotor-stator gap. Two separate sets of population balance modelling constants are required to capture all the experiment results – even with the most complex geometries. Some suggestions are made for improvements and further studies will consider other rotor-stator devices.
    Źródło:
    Chemical and Process Engineering; 2021, 42, 4; 295--320
    0208-6425
    2300-1925
    Pojawia się w:
    Chemical and Process Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Wpływ antyoksydantów zawartych w tłuszczu pasz objętościowych na jakość mleka krów
    Effects of antioxidants in fat contained in bulky forages on cows’ milk quality
    Autorzy:
    Krzyzewski, J..
    Strzalkowska, N.
    Bagnicka, E.
    Jozwik, A.
    Horbanczuk, J.O.
    Powiązania:
    https://bibliotekanauki.pl/articles/828241.pdf
    Data publikacji:
    2012
    Wydawca:
    Polskie Towarzystwo Technologów Żywności
    Opis:
    Antyoksydanty zawarte w paszach objętościowych, tj. tokoferole i karotenoidy, odgrywają istotną rolę w pokryciu zapotrzebowania krów mlecznych na karoten oraz witaminy A i E. W pracy dokonano przeglądu wyników badań naukowych, wykonanych w okresie ostatniej dekady, nad wpływem naturalnych antyoksydantów zawartych w tłuszczu pasz objętościowych na potencjał oksydacyjny mleka i zawartość w nim składników funkcjonalnych. Z badań tych wynika, że istnieje możliwość produkcji mleka o zwiększonej zawartości nienasyconych kwasów tłuszczowych oraz substancji o charakterze antyoksydacyjnym (witamin A, E i β-karotenu) pod warunkiem żywienia krów paszami o dużej zawartości karotenoidów i tokoferoli. Wymienione antyoksydanty chronią zawarte w mleku nienasycone kwasy tłuszczowe przed niekorzystnymi procesami utleniania, zachowując jednocześnie ich wysoką aktywność biologiczną oraz odpowiedni smak i zapach mleka. Zawartość karotenoidów i tokoferoli w paszach objętościowych oraz wysokość wskaźnika ich transferu do mleka w decydującym stopniu zależą od: gatunku i odmiany roślin, stadium wegetacji, zabiegów agrotechnicznych, warunków atmosferycznych w okresie wegetacji oraz sposobu konserwacji (suszenie, kiszenie). Zielonki i kiszonki z porostu łąkowego, roślin motylkowatych oraz mieszanek roślin motylkowatych z trawami powinny być w maksymalnym stopniu wykorzystywane w żywieniu krów mlecznych jako cenne źródło witaminy A, E i β-karotenu, które obok nienasyconych kwasów tłuszczowych wpływają korzystnie na jakość produkowanego mleka i zdrowie konsumentów.
    Antioxidants contained in bulky forages, i.e. Tocopherols and carotenoids, play a significant role in meeting the demand for carotene, and vitamins a and e in dairy cows. This paper is a review of the results of some scientific research carried out during the last decade in order to study the impact of natural antioxidants in fat contained in bulky forages on the oxidative status of milk as well as on the content of functional components in milk. Based on the research results analyzed, it is possible to manufacture milk with an increased content of unsaturated fatty acids and antioxidative substances (vitamins a, e, and β-carotene), provided, however, that the cows are fed forages with a high content of carotenoids and tocopherols. The antioxidants as named above protect the unsaturated fatty acids contained in the milk fat from adverse oxidation processes, and, at the same, they retain their high biological activity and a proper taste and odour of milk. The content of carotenoids and tocopherols in bulk forages, as well as the rate of their transfer into milk depend crucially on the following: species and variety of plants, stage of vegetation, agrotechnical measures applied, weather conditions during the vegetation period, and forage conservation methods (such as drying or silage). Green fodders and silages from vegetative meadow covers, papilionaceous plants, and mixtures of grasses and papilionaceous plants should be maximally utilized in feeding dairy cows as a valuable source of vitamins a, e, and β-carotene, since they, together with the unsaturated fatty acids, beneficially impact the quality of milk and consumers' health.
    Źródło:
    Żywność Nauka Technologia Jakość; 2012, 19, 3
    1425-6959
    Pojawia się w:
    Żywność Nauka Technologia Jakość
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Combination of Navigational and VDRbased Information to Enhance Alert Management
    Autorzy:
    Baldauf, M.
    Benedict, K.
    Wilske, E.
    Grundevik, P.
    Klepsvik, J.O.
    Powiązania:
    https://bibliotekanauki.pl/articles/117183.pdf
    Data publikacji:
    2008
    Wydawca:
    Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
    Tematy:
    Integration of Navigation
    Alert Management
    Voyage Data Recorder (VDR)
    Navigational Bridge Equipment
    Navigational Information
    Integrated Navigation System (INS)
    Dangerous Target, ECDIS
    Opis:
    Within this paper results of ongoing investigations will be presented. Main subject of studies is laid on the present situation of alert management onboard ships navigational bridges and potential use of data recorded with mandatory ship-borne VDR equipment during normal ship operation to support the process of on board collision avoidance. The investigations and results discussed and presented in the paper are gained within trhe work in two different projects on research and technical development. The first is the European MARNIS – project on Maritime Navigation and Information Services. It is funded by the European Commission, Department for Energy and Transport. Secondly some of the results presented here are part of investigations performed under the national RD project "Maritime Safety Assistance Rostock" which is funded by the German Ministry of Education and Research Berlin.
    Źródło:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2008, 2, 3; 245-251
    2083-6473
    2083-6481
    Pojawia się w:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Determinants of the neglected and underutilized species’ cultivation by small-scale farmers in Nigerian Guinea Savannah
    Determinanty uprawy marginalnych i niedocenianych gatunków roślin przez właścicieli małych gospodarstw rolnych w regionie Nigerian Guinea Savannah
    Autorzy:
    Animashaun, J.O.
    Ibrahim, H.K.
    Omotesho, K.F.
    Aderinoye-Abdulwahab, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/44203.pdf
    Data publikacji:
    2016
    Wydawca:
    Uniwersytet Przyrodniczy w Poznaniu. Wydawnictwo Uczelniane
    Tematy:
    neglected and underutilized species
    NUS zob.neglected and underutilized species
    cashew nut plant
    Anacardium occidentale
    Moringa oleifera
    Jatropha curcas
    plant cultivation
    small farmer
    diversification
    Guinea Savannah region
    Nigeria
    Opis:
    There is an increasing consensus that diversifying into the cultivation of ‘Neglected and Underutilized Species’ (NUS), in addition to growing conventional crops, offers a plethora of livelihood-enhancing benefi ts to small-scale agricultural households. Therefore this study examined the factors that influence small-scale farmers’ diversifi cation into the cultivation of the cashew nut plant (Anarcadium occidentale, Moringa oleifera and Jatropha curcas) in the guinea savannah region of Nigeria. We employed farm household-level survey data of the phenomenon in Kwara State. The data were analyzed using the Simson Index of Diversity (SID) and Tobit censored regression. Findings indicate that respondents diversified most into the cultivation of cashews (70.9%), followed by moringa (38.4%), and jatropha (11.3%). The extent of diversifi cation was positively infl uenced by the farm size (p < 0.01), household head’s education level (p < 0.01), membership in a cooperative (p < 0.01), and farm income (p < 0.1). It was negatively infl uenced by the land tenure system practiced (p < 0.05). Findings imply, inter alia, that small-scale farmers may avoid diversifi cation into these crops if they have a limited access to cultivated land. This study therefore advocates ensuring equitable access to farmland through a structural and legislative land tenure reform policy.
    Coraz powszechniej uznaje się, że poszerzanie konwencjonalnych upraw o gatunki marginalne i niedoceniane (Neglected and Underutilized Species, NUS) zapewnia małym gospodarstwom rolnym wiele korzyści, uzupełniając źródła utrzymania. W niniejszym artykule przeanalizowano czynniki, które wpływają na poszerzanie upraw przez właścicieli małych gospodarstw rolnych o nanercz zachodni (Anarcadium occidentale), moringę olejodajną (Moringa oleifera) oraz jatrofę przeczyszczającą (Jatropha curcas) w regionie Nigerian Guinea Savannah. Na potrzeby badania wykorzystano dane z ankiety przeprowadzonej w gospodarstwach rolnych stanu Kwara. Dane poddano analizie za pomocą wskaźnika różnorodności Simpsona (Simpson Index of Diversity, SID) oraz modelu tobitowego regresji cenzurowanej. Wyniki wskazują, że respondenci najczęściej poszerzali uprawy o nanercz (70,9%), a dopiero w dalszej kolejności o moringę (38,4%) i jatrofę (11,3%). Na stopień różnorodności upraw pozytywnie wpływały: wielkość gospodarstwa (p < 0,01), wykształcenie głowy rodziny (p < 0,01), członkostwo w spółdzielni (p < 0,01) oraz dochód gospodarstwa (p < 0,1), natomiast negatywny wpływ miał typ własności ziemi (p < 0,05). Wyniki wskazują, że właściciele małych gospodarstw rolnych mogą unikać poszerzania upraw o wymienione gatunki, jeśli mają ograniczony dostęp do uprawianej ziemi. Autorzy opowiadają się za zapewnieniem sprawiedliwego dostępu do ziemi przez przeprowadzenie prawnych oraz strukturalnych reform zasad najmu ziemi na omawianym obszarze.
    Źródło:
    Journal of Agribusiness and Rural Development; 2016, 42, 4
    1899-5241
    Pojawia się w:
    Journal of Agribusiness and Rural Development
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Dynamics of the FKT system with different mooring lines
    Autorzy:
    Wu, Jo-Ti
    Chen, Jiahn-Horng
    Hsin, Ching-Yeh
    Chiu, Forng-Chen
    Powiązania:
    https://bibliotekanauki.pl/articles/258986.pdf
    Data publikacji:
    2019
    Wydawca:
    Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
    Tematy:
    ocean current energy
    floating turbine system
    mooring line
    system dynamics
    surface waves
    Opis:
    To harness the endless hydrokinetic energy of the Kuroshio current, the joint research team of the National Taiwan University and the National Taiwan Ocean University has developed a floating Kuroshio turbine (FKT) system in Taiwan. In normal operation, the system floats at a certain small depth from the ocean surface to reduce the wave effects and take advantage of faster current speeds. In the present study, the effect of the mooring line on the system dynamics is investigated computationally. Two different auxiliary mooring line designs and, for each design, three different common mooring lines (polyester ropes of neutral buoyancy, iron chains, and 6×19 wires ropes with wire core) are examined. The study makes use of several commercial and in-house packages, integrated to find various coefficients. It is found that the mooring line, the auxiliary mooring line design, and the gravity centre can have a significant effect on system fluctuations in normal operation if the combination of these factors is not properly matched.
    Źródło:
    Polish Maritime Research; 2019, 1; 20-29
    1233-2585
    Pojawia się w:
    Polish Maritime Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Electronic Energies of Interaction of Point Defects with Interfaces and Grain Boundaries
    Autorzy:
    Vasseur, J.O.
    Deymier, P.A.
    Akjouj, A.
    Dobrzynski, L.
    Djafari-Rouhani, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/1892209.pdf
    Data publikacji:
    1992-01
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    71.20.-b
    73.40.-c
    61.70.Yq
    68.35.Dv
    Opis:
    The electronic energies of interaction of a point defect with interfaces and grain boundaries are calculated, as a function of the distance x$\text{}_{03}$ between the point defect and the corresponding planar defect. These interaction energies are shown to have the same type of oscillations as the corresponding local electronic densities. Therefore the electronic interactions more significantly affect the energy of segregation of point defects towards interfaces when x$\text{}_{03}$ is in the near vicinity of these interfaces, while at large distances the contribution of elastic interactions can dominate.
    Źródło:
    Acta Physica Polonica A; 1992, 81, 1; 39-46
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    State-space estimation of soil organic carbon stock
    Autorzy:
    Timm, L.C.
    Ogunwole, J.O.
    Obidike-Ugwu, E.O.
    Gabriels, D.M.
    Powiązania:
    https://bibliotekanauki.pl/articles/26250.pdf
    Data publikacji:
    2014
    Wydawca:
    Polska Akademia Nauk. Instytut Agrofizyki PAN
    Tematy:
    soil
    organic carbon
    variability
    component analysis
    organic matter
    agricultural management
    Opis:
    Understanding soil spatial variability and identifying soil parameters most determinant to soil organic carbon stock is pivotal to precision in ecological modelling, prediction, estimation and management of soil within a landscape. This study investigates and describes field soil variability and its structural pattern for agricultural management decisions. The main aim was to relate variation in soil organic carbon stock to soil properties and to estimate soil organic carbon stock from the soil properties. A transect sampling of 100 points at 3 m intervals was carried out. Soils were sampled and analyzed for soil organic carbon and other selected soil properties along with determination of dry aggregate and water-stable aggregate fractions. Principal component analysis, geostatistics, and state-space analysis were conducted on the analyzed soil properties. The first three principal components explained 53.2% of the total variation; Principal Component 1 was dominated by soil exchange complex and dry sieved macroaggregates clusters. Exponential semivariogram model described the structure of soil organic carbon stock with a strong dependence indicating that soil organic carbon values were correlated up to 10.8m.Neighbouring values of soil organic carbon stock, all waterstable aggregate fractions, and dithionite and pyrophosphate iron gave reliable estimate of soil organic carbon stock by state-space.
    Źródło:
    International Agrophysics; 2014, 28, 2
    0236-8722
    Pojawia się w:
    International Agrophysics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Synthesis of Y2O3-Dispersed W Powders Prepared by Ultrasonic Spray Pyrolysis and Polymer Solution Route
    Autorzy:
    Jo, Hyeonhui
    Lee, Young-In
    Suk, Myung-Jin
    Jeong, Young-Keun
    Oh, Sung-Tag
    Powiązania:
    https://bibliotekanauki.pl/articles/2049335.pdf
    Data publikacji:
    2021
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    tungsten
    Y2O3 dispersion
    ultrasonic spray pyrolysis
    wet chemical route
    Opis:
    The nano-sized Y2O3 dispersed W composite powder is prepared by ultrasonic spray pyrolysis of a tungsten precursor using ammonium metatungstate hydrate and a polymer addition solution method using Y-nitrate. XRD analysis for calcined powder showed the formation of WO2 phase by partial oxidation of W powder during calcination in air. The TEM and phase analysis for further hydrogen reduction of calcined powder mixture exhibited that the W powder with a uniform distribution of Y2O3 nanoparticles can be successfully produced. These results indicate that the wet chemical method combined with spray pyrolysis and polymer solution is a promising way to synthesis the W-based composites with homogeneous dispersion of fine oxide particles.
    Źródło:
    Archives of Metallurgy and Materials; 2021, 66, 3; 799-802
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    An assessment of health practises among small-scale farmers in Kwara State, Nigeria
    Autorzy:
    Akangbe, J.A.
    Asiyanbi, A.O.
    Ibraheem, A.F.
    Sola, K.E.
    Animashaun, J.O.
    Powiązania:
    https://bibliotekanauki.pl/articles/51473.pdf
    Data publikacji:
    2015
    Wydawca:
    Instytut Medycyny Wsi
    Opis:
    Objective. The study examines the personal health practices of small scale farmers in Kwara State, Nigeria. Materials and Methods. Primary data were obtained using a well-structured questionnaire which was distributed to 120 small scale farmers. Descriptive statistical techniques such as frequency count, percentages were used, as well as Pearson Product Moment correlation and analysis for empirical analysis. Results. Results revealed that more than half (55%) smoke cigarettes, about 48% drink alcohol to a very great extent, while the majority (64.5%) indicated they have not been screened to know their HIV status. On a positive note, the results further show that the majority 70%, 53.3%, 80% and 73.3% indicated that they eat a balance diet, engage in physical activity, practice safer sex, and regularly visit a health care centre, respectively. It also revealed that 77% have not attended any training on healthy living. The results of PPMC showed that the health knowledge of respondents had significant (p<0.01) influence on practices like cigarette smoking, eating a balance diet and regular visits to a health care centre. Conclusion. It was concluded that health threatening practices such as cigarette smoking and drinking alcohol among the majority of the respondents, coupled with their lack of health knowledge from health professionals, contributes to the poor health status of respondents which eventually negatively influences the labour efficiency of farmers. It is recommended that farmers should endeavour to make use of health literacy programmes introduced to them at local government level, and that the government should provide more of these health literacy programmes.
    Źródło:
    Annals of Agricultural and Environmental Medicine; 2015, 22, 3
    1232-1966
    Pojawia się w:
    Annals of Agricultural and Environmental Medicine
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Large theropod dinosaur footprint associations in western Gondwana: Behavioural and palaeogeographic implications
    Autorzy:
    Moreno, K.
    de Valais, S.
    Blanco, N.
    Tomlinson, A.J.
    Jacay, J.
    Calvo, J.O.
    Powiązania:
    https://bibliotekanauki.pl/articles/22773.pdf
    Data publikacji:
    2012
    Wydawca:
    Polska Akademia Nauk. Instytut Paleobiologii PAN
    Tematy:
    large theropod dinosaur
    theropod dinosaur
    footprint
    Gondwana
    Theropoda
    behaviour
    paleogeography
    Early Cretaceous
    Cretaceous
    Chile
    Peru
    Opis:
    In modern terrestrial ecosystems, the population size of large predators is low, and a similar pattern has usually been assumed for dinosaurs. However, fossil finds of monospecific, large theropod accumulations suggest that population dynamics were more complex. Here, we report two Early Cretaceous tracksites dominated by large theropod footprints, in Querulpa Chico (Peru) and Chacarilla (Chile). The two sites correspond to distinct depositional environments—tidal basin/delta (Querulpa Chico) and meandering river (Chacarilla)—with both subject to extensive arid or semiarid palaeoclimatic conditions. Although most trackways show no preferred orientation, a clear relationship between two trackmakers is observed in one instance. This observation, coupled with the high abundance of trackways belonging to distinct large theropods, and the exclusion of tracks of other animals, suggests some degree of grouping behaviour. The presence of freshwater sources in a dry climate and perhaps social behaviour such as pair bonding may have promoted interactions between large carnivores. Further, the occurrence of these two tracksites confirms that large theropod dinosaurs, possibly spinosaurids and/or carcharodontosaurids, existed on the western margin of Gondwana as early as the earliest Cretaceous.
    Źródło:
    Acta Palaeontologica Polonica; 2012, 57, 1
    0567-7920
    Pojawia się w:
    Acta Palaeontologica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Acquisition and tracking performance of satellite navigation system signal using tiered differential polyphase code
    Autorzy:
    Jo, Gwang Hee
    Lee, Ju Hyun
    Noh, Jae Hee
    Lee, Sang Jeong
    Lee, Jin Hyuk
    Powiązania:
    https://bibliotekanauki.pl/articles/320518.pdf
    Data publikacji:
    2019
    Wydawca:
    Polskie Forum Nawigacyjne
    Tematy:
    Zadoff-Chu sequence
    polyphase codes
    acquisition
    tracking
    Opis:
    In this paper, we analyze the acquisition and tracking performance of signal using a tiered differential polyphase code as the secondary code. The Zadoff-Chu sequence is known to have a CAZAC (Constant Amplitude Zero Auto-Correlation) characteristics. The secondary code generated by differential encoding of the Zadoff-Chu sequence also has the same characteristics as the Zadoff-Chu sequence. Therefore, long integration will give better correlation results. We compare signal acquisition and tracking performance when using the NH sequence and Zadoff-Chu sequence as the secondary code. Monte-carlo simulation is performed using MATLAB. We use the probability of detection and the mean acquisition time for signal acquisition performance and tracking jitter for signal tracking performance.
    Źródło:
    Annual of Navigation; 2019, 26; 5-11
    1640-8632
    Pojawia się w:
    Annual of Navigation
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Interakcja w miejscu pracy z perspektywy kilku podejść dyskursywnych
    Multiple Discourse Analyses of a Workplace Interaction
    Autorzy:
    Stubbe, Maria
    Hilder, Jo
    Vine, Elaine
    Vine, Bernadette
    Holmes, Janet
    Marra, Meredith
    Lane, Chris
    Weatherall, Ann
    Powiązania:
    https://bibliotekanauki.pl/articles/1373627.pdf
    Data publikacji:
    2013
    Wydawca:
    Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego
    Tematy:
    critical discourse analysis
    conversation analysis
    discourse analysis
    discursive psychology
    interactional sociolinguistics
    politeness theory
    pragmatics
    workplace interaction
    Opis:
    W artykule omówiono wkład pięciu różnych podejść w ramach analizy dyskursu w interpretację i zrozumienie tego samego materiału empirycznego. Podejścia wybrane do porównania to analiza konwersacyjna, interakcyjna socjolingwistyka, teoria grzeczności, krytyczna analiza dyskursu i psychologia dyskursywna. Dane empiryczne stanowi dziewięciominutowe nagranie dźwiękowe nieformalnej interakcji w miejscu pracy. W artykule zostaną ze sobą zestawione różne sposoby analizy, zostaną również omówione teoretyczne i metodologiczne implikacje używania poszczególnych podejść.
    This article explores the contributions that five different approaches to discourse analysis can make to interpreting and understanding the same piece of data. Conversation analysis, interactional sociolinguistics, politeness theory, critical discourse analysis, and discursive psychology are the approaches chosen for comparison. The data is a nine-minute audio recording of a spontaneous workplace interaction. The analyses are compared, and the theoretical and methodological implications of the different approaches are discussed.
    Źródło:
    Przegląd Socjologii Jakościowej; 2013, 9, 1; 112-151
    1733-8069
    Pojawia się w:
    Przegląd Socjologii Jakościowej
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Cichorin A: a benzo-isochromene from Nypa fruticans endophytic fungus Pestalotiopsis sp.
    Cychoryna A: benzo-izochromen z Pestalotiopsis sp. - endofitycznego grzyba Nypa fruticans
    Autorzy:
    Alade, G.O.
    Moody, J.O.
    Awotona, O.R.
    Lai, D.
    Adesanya, S.A.
    Proksch, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/71140.pdf
    Data publikacji:
    2017
    Wydawca:
    Instytut Włókien Naturalnych i Roślin Zielarskich
    Tematy:
    fungi
    cichorin A
    benzo-isochromene
    Nypa fruticans
    endophytic fungi
    Pestalotiopsis
    bioactive compound
    Opis:
    Introduction: Similar bioactive metabolites are obtainable from host plants as well as the endophytic fungi residing in them. Objective: The aim of the study is to isolate the major compound(s) from the endophytic fungus residing in Nypa fruticans Wurmb, Arecaceae family. Methods: Purification of the ethyl acetate extract of the isolated endophytic fungus was performed by employing different chromatographic techniques and structural elucidation of the isolated compound was carried out using UV and NMR spectroscopic methods. Results: Cichorin A was isolated from the ethyl acetate extract of the solid rice cultures of Pestalotiopsis sp., isolated from N. fruticans, collected in Nigeria. Conclusions: This compound is being isolated for the first time from a fungus; it is commonly isolated from the plant Cichorium intybus L. (Compositae).
    Wstęp: Z roślin – gospodarzy oraz z ich endofitycznych grzybów można otrzymać podobne aktywne metabolity. Cel: Celem prowadzonych badań było wyizolowanie głównego związku/związków z endofitów grzybowych zasiedlających nipę krzewinkową (palmę krzaczastą) Nypa fruticans Wurmb (Arecaceae). Metody: Oczyszczenie ekstraktu z izolowanych endofitów grzybowych, otrzymanego za pomocą octanu etylu, przeprowadzono za pomocą różnych technik chromatograficznych . Wyjaśnienie struktury wyizolowanego związku przeprowadzono metodą spektoskopii NMR. Wyniki: Z ekstraktu (otrzymanego za pomocą octanu etylu) z kultur Pestalotiopsis sp. (izolowanych z N. fruticans z Nigerii), hodowanych na pożywkach stałych ryżowych, otrzymano cychorynę A. Wnioski: Związek ten, powszechnie izolowany z rośliny Cichorium intybus L. (Compositae), po raz pierwszy został wyizolowany z grzybów.
    Źródło:
    Herba Polonica; 2017, 63, 4
    0018-0599
    Pojawia się w:
    Herba Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Performance analysis of GPS/BDS integrated precise positioning system considering visibility of satellites
    Autorzy:
    Noh, Jae Hee
    Jo, Gwang Hee
    Lim, Deok Won
    Lee, Jin Hyuk
    Lee, Sun Yong
    Lee, Sang Jeong
    Powiązania:
    https://bibliotekanauki.pl/articles/320929.pdf
    Data publikacji:
    2019
    Wydawca:
    Polskie Forum Nawigacyjne
    Tematy:
    BDS
    precise positioning
    urban canyon
    Opis:
    Research on precise positioning is being actively carried out to provide accurate position information for land transportation. The most significant problem when performing precise positioning in urban canyon is the degradation of performance due to the lack of visible satellites. Prior to open service of BDS, most of the studies on positioning were focused on using GPS/GLONASS integrated navigation system. Since BDS began open service, studies using GPS/BDS have been actively performed in the Asia-Pacific region as it became possible to acquire enough available BDS satellites. The average number of visible satellites in Korea is 9 for GPS and 14 for BDS. In this paper, we analyze the availability of precise positioning using BDS in urban canyon. To do this, we simulate the urban canyon environment by applying the mask to the azimuth and the elevation. We analyze the positioning accuracy using two simulation scenarios. From the results, it is shown that the accuracy of precise positioning in the case where the satellites in the east-west direction are blocked is lowered than that in the case where the satellites in the south-north direction are blocked for the same elevation mask angle. This result comes from the fact that the PDOP increases when the satellites are blocked in the east-west direction. Also, it can be confirmed that the GPS/BDS integrated positioning is available for the high mask angle while the GPS-only positioning is not possible continuously.
    Źródło:
    Annual of Navigation; 2019, 26; 65-75
    1640-8632
    Pojawia się w:
    Annual of Navigation
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A new plesiosaur from the Lower Jurassic of Portugal and the early radiation of Plesiosauroidea
    Autorzy:
    Puertolas-Pascual, E.
    Marx, M.
    Mateus, O.
    Saleiro, O.
    Fernandes, A.E.
    Marinheiro, J.O.
    Tomas, C.
    Mateus, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/2082325.pdf
    Data publikacji:
    2021
    Wydawca:
    Polska Akademia Nauk. Instytut Paleobiologii PAN
    Tematy:
    Plesiosauria
    radiation
    Sinemurian
    Jurassic
    Iberian Peninsula
    Europe
    Opis:
    A new plesiosaur partial skeleton, comprising most of the trunk and including axial, limb, and girdle bones, was collected in the lower Sinemurian (Coimbra Formation) of Praia da Concha, near São Pedro de Moel in central west Portugal. The specimen represents a new genus and species, Plesiopharos moelensis gen. et sp. nov. Phylogenetic analysis places this taxon at the base of Plesiosauroidea. Its position is based on this exclusive combination of characters: presence of a straight preaxial margin of the radius; transverse processes of mid-dorsal vertebrae horizontally oriented; ilium with sub-circular cross section of the shaft and subequal anteroposterior expansion of the dorsal blade; straight proximal end of the humerus; and ventral surface of the humerus with an anteroposteriorly long shallow groove between the epipodial facets. In addition, the new taxon has the following autapomorphies: iliac blade with less expanded, rounded and convex anterior flank; highly developed ischial facet of the ilium; apex of the neural spine of the first pectoral vertebra inclined posterodorsally with a small rounded tip. This taxon represents the most complete and the oldest plesiosaur species in the Iberian Peninsula. It is also the most complete, best preserved, and oldest marine vertebrate in the region and testifies to the incursion of marine reptiles in the newly formed proto-Atlantic sea, prior to the Atlantic Ocean floor spreading in the Early Cretaceous.
    Źródło:
    Acta Palaeontologica Polonica; 2021, 66, 2; 369-388
    0567-7920
    Pojawia się w:
    Acta Palaeontologica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Surface Modification of Self-Consolidated Microporous Ti Implant Compacts Fabricated by Electro-Discharge-Sintering in Air
    Autorzy:
    Jo, Y. J.
    Yoon, Y. H.
    Kim, Y. H.
    Chang, S. Y.
    Kim, J. Y.
    Lee, Y. K.
    Van Tyne, C. J.
    Lee, W. H.
    Powiązania:
    https://bibliotekanauki.pl/articles/356790.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    titanium
    implant
    porous
    sintering
    X-ray photoelectron spectroscopy (XPS)
    Opis:
    A single pulse of 0.75-2.0 kJ/0.7g of atomized spherical Ti powders from 300 mF capacitor was applied to produce a microporous Ti implant compact by electro-discharge-sintering (EDS). A solid core in the middle of the compact surrounded by a microporous layer was found. X-ray photoelectron spectroscopy was employed to study the surface characteristics of the EDS Ti compact and it revealed that Ti, C and O were the main constituents on the surface with a smaller amount of N. The surface was lightly oxidized and was primarily in the form of TiO2 resulting from the air oxidation during EDS processing. The lightly oxidized surface of the EDS compact also exhibited Ti nitrides such as TiN and TiON, which revealed that the reaction between air constituents and the Ti powders even in times as short as 128 msec.
    Źródło:
    Archives of Metallurgy and Materials; 2017, 62, 2B; 1287-1291
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Participatory development of demand-driven curriculum for career-ready e-extension services in Nigeria
    Autorzy:
    Deji, O.F.
    Opayinka, A.O.
    Ajayi, A.O.
    Adesoji, S.A.
    Adisa, B.O.
    Ojo, T.F.
    Alabi, D.L.
    Ayinde, J.O.
    Agboola, A.F.
    Filusi, O.J.
    Oladele, O.I.
    Powiązania:
    https://bibliotekanauki.pl/articles/2081174.pdf
    Data publikacji:
    2021
    Wydawca:
    Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
    Tematy:
    participatory curriculum
    career- ready
    e- extension services
    stakeholders
    Nigeria
    Opis:
    This paper described and contextualized participatory development of demand-driven curriculum for career-ready e-extension services in Nigeria as introduced by the Sasakawa Africa Fund for Extension Education. The stages of participatory development were participatory need assessment, participatory stakeholders’ workshop and validation among 124 stakeholders selected as key informants in relation to agricultural extension training, delivery, end users and policy makers. The stakeholders were grouped as follows: community leaders and policy makers; extension agencies / organisations / institutions / employers; farmers; input suppliers / marketers / agro-based traders / other value actors; and potential candidate groups. Stakeholder meetings were held separately with different groups three times, and then a combined meeting took place. The aggregated major decisions/consensus were subjected to content analysis using ATLAS.ti. The validation process included reading of each agreed decision to all participants, then participants indicated their agreement or otherwise, which led to either rejection or acceptance of the decision. This paper concludes that participatory curriculum development has enhanced the stakeholders to identify areas of demand-driven training in response to community needs. The stakeholders preferred more online than face-to-face training. The major perceived advantages of e-extension were reduced risk, time and cost effectiveness while infrastructural and human challenges were the perceived challenges that could possibly hinder the smooth running of eextension.
    Źródło:
    Zeszyty Naukowe Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie. Problemy Rolnictwa Światowego; 2021, 21[36], 3; 14-23
    2081-6960
    Pojawia się w:
    Zeszyty Naukowe Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie. Problemy Rolnictwa Światowego
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Potential of agroforestry systems in preserving Europe’s soil productivity in lowland and highland landscapes by limiting soil erosion by water
    Autorzy:
    Wawer, Rafał
    Koza, Piotr
    Borek, Robert
    Gliga, Adrian-Eugen
    Ghaley, Bhim Bahadur
    Xu, Ying
    Smith, Jo
    Smith, Laurence
    Șandor, Mignon
    Pisanelli, Andrea
    Augusti, Angela
    Russo, Giuseppe
    Lauteri, Marco
    Ciolfi, Marco
    Mølgaard Lehmann, Lisa
    Nowocień, Eugeniusz
    Badora, Damian
    Powiązania:
    https://bibliotekanauki.pl/articles/2148186.pdf
    Data publikacji:
    2021-12-30
    Wydawca:
    Instytut Uprawy Nawożenia i Gleboznawstwa – Państwowy Instytut Badawczy
    Tematy:
    innovative food and non-food systems
    agroforestry
    soil erosion by water
    RUSLE
    Opis:
    Over the past half-century, an expansion of agriculture on lands is observed, followed with increased intensification through larger fields of monoculture crops and application of high level of inputs, that icreases the pressures agriculture sets upon the environment. Raising awareness of consumers and environmentalists led to the promotion of several alternative farming practices, including integrated food and non-food systems (IFNS). Here we explore the potential of different kinds of IFNS systems in delivering environmental benefits, focusing on preserving soil functions as the form of land use limiting the loos of soil by water erosion. Six successfully implemented IFNS systems located in UK, Poland, Italy, Denmark and Romania, were taken as a baseline to investigate their potential impact onto lowering soil loss by water erosion in their respective NUTS3 regions, when they would be applied widely on a regional scale. The results of analyses performed within GIS systems based upon European datasets revealed, that altogether the highest potential of limiting the area of soil erosion exceeding 0,5 Mg ha-1y-1 by an IFNS existing in a particular NUTS is observed in Romania, where 531km2 may be protected effectively with exiting silvopastoral system, while applied in a longer term on non-pastoral land cover classes it could provide effective protection for another 1362 km2. Second largest influence can be achieved in Polish NUTS region, where 125 km2 may be taken into protection directly and an another 1140 km2 may be transformed into agroforestry systems to lower the risk of soil erosion by water. In all investigated regions, a wide introduction of IFNS, that are already proven to be economically successful, would decrease soil loss considerably on existing land cover classes similar to IFNS systems covering 4927km2, while potentially on all agricultural land up to 8854km2.
    Źródło:
    Polish Journal of Agronomy; 2021, 47; 78-86
    2081-2787
    Pojawia się w:
    Polish Journal of Agronomy
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
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