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    Wyświetlanie 1-34 z 34
    Tytuł:
    Frequency Dependent Incidence Model for Acute and Chronic Schistosomiasis
    Autorzy:
    Derick, Ngobi
    Onuorah, Martins O.
    Powiązania:
    https://bibliotekanauki.pl/articles/1077429.pdf
    Data publikacji:
    2019
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    Schistosomiasis
    acute
    chronic
    endemic
    equilibrium
    stability
    Opis:
    In this research work, a deterministic mathematical model for schistosomiasis transmission dynamics is presented. The model consists of five non-liniar ordinary differential equations incorporating the acute and chronic infectious compartments. The basic reproductive number, (the number of secondary infections when a single infectious individual is introduced into a population where everyone is susceptible) was obtained. Furthermore, we gained and analyzed for stability, the disease-free and endemic equilibrium. The qualitative feature of the model shows that the long-term behavior of the model is independent of initial conditions. Numerical simulation of the various state variables were obtained using matlab software.
    Źródło:
    World News of Natural Sciences; 2019, 23; 276-296
    2543-5426
    Pojawia się w:
    World News of Natural Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The Role of Faster R-CNN Algorithm in the Internet of Things to Detect Mask Wearing: The Endemic Preparations
    Autorzy:
    Nasution, Marah Doly
    Al-Khowarizmi
    Rahmat, Romi Fadillah
    Lubis, Arif Ridho
    Lubis, Muharman
    Powiązania:
    https://bibliotekanauki.pl/articles/27311978.pdf
    Data publikacji:
    2023
    Wydawca:
    Polska Akademia Nauk. Czasopisma i Monografie PAN
    Tematy:
    Faster R-CNN
    IoT
    mask
    endemic
    Opis:
    Faster R-CNN is an algorithm development that continuously starts from CNN then R-CNN and Faster R-CNN. The development of the algorithm is needed to test whether the heuristic algorithm has optimal provisions. Broadly speaking, faster R-CNN is included in algorithms that are able to solve neural network and machine learning problems to detect a moving object. One of the moving objects in the current phenomenon is the use of masks. Where various countries in the world have issued endemic orations after the Covid 19 pandemic occurred. Detection tool has been prepared that has been tested at the mandatory mask door, namely for mask users. In this paper, the role of the Faster R-CNN algorithm has been carried out to detect masks poured on Internet of Thinks (IoT) devices to automatically open doors for standard mask users. From the results received that testing on the detection of moving mask objects when used reaches 100% optimal at a distance of 0.5 to 1 meter and 95% at a distance of 1.5 to 2 meters so that the process of sending detection signals to IoT devices can be carried out at a distance of 1 meter at the position mask users to automatic doors.
    Źródło:
    International Journal of Electronics and Telecommunications; 2023, 69, 4; 691--696
    2300-1933
    Pojawia się w:
    International Journal of Electronics and Telecommunications
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Znaczenie terminu „epidemia” w starożytnej literaturze grecko-rzymskiej (Próba analizy na wybranych przykładach)
    The meaning of the term epidemic in ancient greek and roman literature. An attempt at an analysis of chosen examples
    Autorzy:
    Iwańska, Judyta
    Powiązania:
    https://bibliotekanauki.pl/articles/496176.pdf
    Data publikacji:
    2014-11-30
    Wydawca:
    Towarzystwo Naukowe Franciszka Salezego
    Tematy:
    epidemia
    zaraza
    endemiczny
    epidemic
    pestilence
    endemic
    Opis:
    The article discusses the meaning of the term ‘epidemic’ in the literary sources of ancient Greece and Rome. It presents an attempt at tracing the semantics of the words no/soj, loimo/j and e)pidemi/a in Greek literature and illustrates various usage of e)pidemi/a before Hippocrates. It also shows what terms were used by Roman scribes to define pestilence or points out that Homer used the word in Illiad in the meaning of: “this one who liked passionately the frightening civil war”. Sophocles used ‘epidemios’ in King Oedipus referring to dissemination and propagation of the king’s fame. The authors before Hippocrates applied this term almost to any phenomenon (people, rain, war) except for disease. Hippocrates was the first one to adapt it to medical terminology. (P. Martin, E. Martin, 2,500-year …).
    Źródło:
    Seminare. Poszukiwania naukowe; 2014, 35, 4; 175-184
    1232-8766
    Pojawia się w:
    Seminare. Poszukiwania naukowe
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Development of microsatellite markers for horse-chestnut (Aesculus hippocastanum), their polymorphism in natural Greek populations, and cross-amplification in related species
    Autorzy:
    Walas, L.
    Iszkulo, G.
    Barina, Z.
    Dering, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/2078223.pdf
    Data publikacji:
    2021
    Wydawca:
    Polska Akademia Nauk. Instytut Dendrologii PAN
    Tematy:
    Tertiary relict
    endemic species
    cross-amplification
    polymorphism
    Opis:
    New nuclear microsatellite markers (SSRs) were developed for Aesculus hippocastanum, a relict tree species from the Balkan Peninsula. The development of microsatellites was done using the Illumina MiSeq PE300 platform. Out of a set of 500 SSRs designed, a subset of 13 loci was tested using 290 individuals from seven natural populations. Twelve species-specific loci were polymorphic. The number of alleles per locus ranged from 2 to 17 and expected heterozygosity from 0.089 to 0.800 with a mean value of 0.484. The population of Kalampaka had the lowest value of allelic richness (2.63) and gene diversity in comparison to the remaining populations. STRUCTURE analysis confirmed isolation of population Mariolata from the southern edge of the species range and genetic similarity among populations from the Pindos Mts. Additionally, the utility of new SSRs in 29 individuals from nine other Aesculus taxa was tested. Eleven markers gave polymorphic products for all tested species. For 24 individuals, a high-quality product was obtained for each marker. Results confirmed the utility of specific markers for future population genetics studies.
    Źródło:
    Dendrobiology; 2021, 85; 105-116
    1641-1307
    Pojawia się w:
    Dendrobiology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Genetic diversity of Galium cracoviense Ehrend. [Rubiaceae] - the Polish endemic plant
    Autorzy:
    Cieslak, E
    Szelag, Z.
    Powiązania:
    https://bibliotekanauki.pl/articles/58412.pdf
    Data publikacji:
    2009
    Wydawca:
    Polskie Towarzystwo Botaniczne
    Tematy:
    Rubiaceae
    endemic plant
    endemic species
    Polska
    Galium cracoviense
    genetic diversity
    population genetics
    gene flow
    glacial relict
    isolated population
    Opis:
    Genetic diversity of Galium cracoviense, a narrow endemic species, limited to the small area in southern Poland and concentrated on Jurassic limestone outcrops near Częstochowa, was examined using the AFLP marker. Twenty nine individuals from three spatially isolated populations were used for the study. AFLP analysis yielded 157 bands, of which 110 (70%) were polymorphic. The AMOVA analysis revealed a substantially higher variation within populations (89.35%) than among them (10.65%). Values of parameters describing population genetic diversity, such as Shannon index and gene diversity index estimated for each population, were highly similar. The results indicate a high level of genetic polymorphism as well as a high genetic similarity of the isolated populations of G. cracoviense and thus an unconstrained gene flow between them. Based on the results we conclude that additional demographic and genetic studies, are necessary to monitor potential decrease of populations size resulting mainly from the mechanical destruction of plants and their habitats caused by intense tourism. Due to the small general range of occurrence, conservation should include the highest possible number of populations of G. cracoviense.
    Źródło:
    Acta Societatis Botanicorum Poloniae; 2009, 78, 2; 123-129
    0001-6977
    2083-9480
    Pojawia się w:
    Acta Societatis Botanicorum Poloniae
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Distribution patterns and habitats of endemic vascular plants in the Polish Carpathians
    Autorzy:
    Piekos-Mirkowa, H
    Mirek, Z.
    Powiązania:
    https://bibliotekanauki.pl/articles/58249.pdf
    Data publikacji:
    2009
    Wydawca:
    Polskie Towarzystwo Botaniczne
    Tematy:
    endemic plant
    Polska
    Carpathians Mountains
    vascular plant
    habitat
    distribution
    Opis:
    The paper deals with the richness and diversity of endemic and subendemic taxa in the Polish Carpathians. Based on critical studies in the literature and the authors' unpublished materials collected in the field, the distribution patterns of endemic species are analysed and discussed. The participation of endemics in the flora of single Carpathian ranges is assessed and analysed. The importance of the Tatra Mts as a centre of endemism is stressed. The frequency and altitudinal ranges of endemic taxa are characterized and their syntaxonomical spectrum is presented.
    Źródło:
    Acta Societatis Botanicorum Poloniae; 2009, 78, 4; 321-326
    0001-6977
    2083-9480
    Pojawia się w:
    Acta Societatis Botanicorum Poloniae
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The influence of culture conditions on shikonin derivatives accumulation in nontransformed and transformed roots of Rindera graeca (A. DC.) Boiss. et Heldr. (A. DC.)
    Autorzy:
    Syklowska-Baranek, K.
    Bolonkowska, O.
    Jeziorek, M.
    Szyszko, E.
    Powala, J.
    Pietrosiuk, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/951268.pdf
    Data publikacji:
    2015
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    conference
    Rindera graeca
    Boraginaceae
    endemic plant
    root line
    fresh biomass
    Źródło:
    BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2015, 96, 1
    0860-7796
    Pojawia się w:
    BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Rhaponticum carthamoides regeneration through direct and indirect organogenesis, molecular profiles and secondary metabolite production
    Autorzy:
    Skala, E.
    Grabkowska, R.
    Sitarek, P.
    Kuzma, L.
    Wysokinska, H.
    Powiązania:
    https://bibliotekanauki.pl/articles/951228.pdf
    Data publikacji:
    2015
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    Rhaponticum carthamoides
    endemic plant
    perennial plant
    herbaceous plant
    organogenesis
    seedling explant
    Źródło:
    BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2015, 96, 1
    0860-7796
    Pojawia się w:
    BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Jodła sycylijska na skraju wyginięcia – czy istnieje szansa dla tego krytycznie zagrożonego gatunku?
    Sicilian fir near to extinction – Is there any chance for this critically endangered species?
    Autorzy:
    Sękiewicz, Katarzyna
    Powiązania:
    https://bibliotekanauki.pl/articles/1186043.pdf
    Data publikacji:
    2020-02-19
    Wydawca:
    Polskie Towarzystwo Dendrologiczne
    Tematy:
    biodiversity hotspot
    conservation status
    endemic
    Mediterranean region
    Sicilian fir
    threatened species
    Opis:
    In the mountains of the north-central Sicily (Italy), a small and isolated population of Sicilian fir (Abies nebrodensis) has survived to the present day. It is the most unique species of the Sicilian flora, not only because of its taxonomic position, but mostly because of its endemic and relict status and the serious risk of extinction. The single natural population of this extremely rare species is currently represented by only 30 mature individuals scattered over a small area in the Madonie Mountains. This species has experienced intensive population decline since the end of the 17th century, and its situation became extremely critical in the first decades of the 19th century due to deforestation and overgrazing. Consequently, Sicilian fir was considered to be extinct about three decades before being rediscovered on the Madonie Mts. in 1937. Sicilian fir is recognized as one of the most endangered coniferous species in the world. It is classified as critically endangered by IUCN, and also included in the list of 50 most endangered plant species in the Mediterranean region. Currently, the limited population size, a small proportion of reproductive individuals, habitat loss, ongoing and projected climate change, and hybridization with other species pose serious threats to survival of this species. Therefore, it is extremely important to maintain actions focusing on in situ and ex situ conservation in order to preserve and protect the existing resources of Sicilian fir, which represents the natural heritage unique to the Mediterranean.
    Źródło:
    Rocznik Polskiego Towarzystwa Dendrologicznego; 2019, 67; 39-48
    2080-4164
    2300-8326
    Pojawia się w:
    Rocznik Polskiego Towarzystwa Dendrologicznego
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Last two hundred individuals: rediscovery of Scilla mesopotamica Speta [Hyacinthaceae], a threatened endemic species in Turkey
    Autorzy:
    Eker, I
    Akan, H.
    Powiązania:
    https://bibliotekanauki.pl/articles/57209.pdf
    Data publikacji:
    2010
    Wydawca:
    Polskie Towarzystwo Botaniczne
    Tematy:
    rediscovery
    Scilla mesopotamica
    Hyacinthaceae
    threatened species
    endemic species
    Turkey [geogr.]
    conservation
    Opis:
    In this paper, the rediscovery of endemic and long missing species, Scilla mesopotamica Speta which had been only known from the type gathering, is given. The species has not been collected again after Sintenis in 1888, whose specimens served Speta for description of the new taxon. In 2004, the authors found it in a steppic rocky area, near Halfeti in Şanliurfa province, South East Anatolia, Turkey. After analyzing Sintenis' original collection notes, they concluded that this area is identical with the type locality. S. mesopotamica has an extremely limited distribution and is represented by less than 200 specimens in the single known population that covers less than 50 m2. Taxonomy of the species, detailed description with illustrations, geographical distribution, habitat, ecology and status of IUCN extinction risk and some comments on conservation of the plant are also presented.
    Źródło:
    Acta Societatis Botanicorum Poloniae; 2010, 79, 1; 31-36
    0001-6977
    2083-9480
    Pojawia się w:
    Acta Societatis Botanicorum Poloniae
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Chemical composition of essential oil and antioxidant activity of Postia puberula, an endemic species from Iran
    Autorzy:
    Hemmati Hassan Gavyar, P.
    Amiri, H.
    Powiązania:
    https://bibliotekanauki.pl/articles/12614017.pdf
    Data publikacji:
    2019
    Wydawca:
    Uniwersytet Przyrodniczy w Lublinie. Wydawnictwo Uniwersytetu Przyrodniczego w Lublinie
    Tematy:
    Iran
    endemic species
    Postia puberula
    chemical composition
    essential oil
    antioxidant activity
    Opis:
    Essential oils from the leaves, stems and flowers of Postia puberula at the flowering stage were analyzed using GC and GC/MS. The results showed that leaves are abundant of cis-3-hexenyl benzoate (10.75%), benzyl benzoate (8.16%) and caryophyllene oxide (8.12%). The main compounds of stems were benzyl benzoate (21.92%), E-nuciferol (11.58%) and dibutyl phthalate (7.08%), while major components of flowers were benzyl benzoate (9.99%), caryophyllene oxide (8.14%) and E-nuciferol (8.13%). The antioxidant activities of methanol extract were evaluated by DPPH and β-carotene/linoleic acid assays. The results showed that in both methods, leaves had stronger antioxidant activity than other organs.
    Źródło:
    Acta Scientiarum Polonorum. Hortorum Cultus; 2019, 18, 1; 119-128
    1644-0692
    Pojawia się w:
    Acta Scientiarum Polonorum. Hortorum Cultus
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A spatial study on Keshan disease prevalence and selenoprotein P in the Heilongjiang Province, China
    Autorzy:
    Wang, Yanan
    Zhang, Xiao
    Wang, Tong
    Hou, Jie
    Guo, Zhongying
    Han, Xiaomin
    Zhou, Huihui
    Liang, Hong
    Xing, Zhifeng
    Powiązania:
    https://bibliotekanauki.pl/articles/2095499.pdf
    Data publikacji:
    2021-09-03
    Wydawca:
    Instytut Medycyny Pracy im. prof. dra Jerzego Nofera w Łodzi
    Tematy:
    prevalence
    biomarker
    prevention and control
    endemic cardiomyopathy
    selenoprotein P
    spatial regression analysis
    Opis:
    ObjectivesFew spatial studies on Keshan disease (KD) prevalence and serum selenoprotein P (SELENOP) levels have been reported in the Heilongjiang Province, China. This study aimed to investigate the spatial relationships between KD prevalence, SELENOP levels, and the socio-economic status for the precise prevention and control of KD.Material and MethodsThe study was carried out in all the 66 KD endemic counties in the Heilongjiang Province using a non-probability sampling method of a key village survey based on county-wide case-searching. The participants completed a questionnaire and had their serum SELENOP levels measured using enzyme-linked immunosorbent assay. Thematic maps were created, and spatial regression analysis was performed by ordinary least squares using ArcGIS 9.0.ResultsOverall, 53 676 residents were surveyed based on case-searching, and blood samples were collected from 409 residents. In total, 50 chronic KD cases were identified with a total prevalence of 9.3/10 000 population. The prevalence in the Tangyuan County was the highest (250/10 000 population). The mean serum SELENOP level was 13.96 mg/l. The spatial regression analysis showed that KD prevalence positively correlated with SELENOP levels and negatively with per capita disposable income among rural residents.ConclusionsThe Tangyuan County should be considered for the precise prevention and control of KD. Further research is necessary to verify the reliability of SELENOP for estimating body selenium levels, and to better understand the relationship between selenium intake and KD in the investigated area.
    Źródło:
    International Journal of Occupational Medicine and Environmental Health; 2021, 34, 5; 659-666
    1232-1087
    1896-494X
    Pojawia się w:
    International Journal of Occupational Medicine and Environmental Health
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Floristic inventory of the habitats of the endangered montane grassland bird Nilgiri Pipit (Anthus nilghiriensis) at Palani Hills and Nilgiri Hills of southern Western Ghats, India
    Autorzy:
    Arigela, Ravi Kiran
    Singh, Rajeev Kumar
    K, Althaf Ahamed Kabeer
    CK, Vishnudas
    Powiązania:
    https://bibliotekanauki.pl/articles/2183582.pdf
    Data publikacji:
    2022-03-30
    Wydawca:
    Uniwersytet Pedagogiczny im. Komisji Edukacji Narodowej w Krakowie
    Tematy:
    endemic
    grasses
    invasive
    Kerala
    native
    Tamil Nadu
    threat
    endemiczny
    trawy
    inwazyjny
    zagrożenie
    Opis:
    The vegetation in the habitats of the endemic montane grassland bird Nilgiri Pipit at Palani Hills and Nilgiri Hills of southern Western Ghats is delineated in this study. Threats to the habitats of the Nilgiri Pipit by invasive plants species is also discussed.
    W niniejszym opracowaniu scharakteryzowano florę i roślinność w siedliskach świergotka, endemicznego ptaka łąk górskich, występującego w Palani Hills i Nilgiri Hills w południowych Ghatach Zachodnich. Wyjaśniono zależność między endemicznymi trawami, a zagrożonym świergotkiem górskim. Omówiono tu również zagrożenia siedlisk świergotka przez inwazyjne gatunki roślin.
    Źródło:
    Annales Universitatis Paedagogicae Cracoviensis Studia Naturae; 2022, 7; 129-144
    2543-8832
    2545-0999
    Pojawia się w:
    Annales Universitatis Paedagogicae Cracoviensis Studia Naturae
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Theoretical Approaches to Trust; Their Implications for the Resolution of Intergroup Conflict
    Autorzy:
    Sztompka, Piotr
    Powiązania:
    https://bibliotekanauki.pl/articles/441104.pdf
    Data publikacji:
    2015
    Wydawca:
    Wyższa Szkoła Europejska im. ks. Józefa Tischnera
    Tematy:
    endemic conflict
    conflict resolution
    trust
    public sphere
    konflikt endemiczny
    rozwiązywanie konfliktów
    zaufanie
    sfera publiczna
    Opis:
    In the rich and evolving research of trust there are two opposite theoretical approaches. One in the tradition of Alexis de Tocqueville (1835), Robert Putnam (1993), Francis Fukuyama (1995) and many others considers trust as a quality of interpersonal relations emerging from below, turning into shared cultural resource and producing viable democracy and prosperous economy. The causal vector is from micro to macro, from interpersonal networks to organizations, institutions and the state. This is the dominant approach. But there is also an alternative perspective which claims that trust is facilitated or even enforced by the “civilized public sphere” (Papakostas 2012), or “institutionalized skepticism” (Cleary and Stokes 2006), i.e. the rational political and economic organization, and particularly the clear, stable, transparent and consistent law universalistically and efficiently applied and executed. Here the causal vector is from the state, organizations and institutions toward interpersonal trust, from macro to micro. Both approaches should not be considered as competing but rather as complementary. They have also different but complementary implications concerning the resolution of intergroup conflicts by building trust. For example, the earlier suggests cultivating trust from below by encouraging personal contacts, mutual acquaintance, cooperation, participation in common voluntary ventures by hostile groups. The latter approach would rather emphasize the need for enforcing trustworthiness by overarching, higher-level structure of organizations, institutions and laws assuring accountability, stability, transparency of social relations, through control and surveillance of both feuding parties. It is only the parallel employment of emergence and enforcement of trust that opens the possibility of gradual resolving of intergroup conflict.
    W bogatych i rozwijających się badaniach na temat zaufania można wyróżnić dwa kontrastujące ze sobą podejścia teoretyczne. Pierwsze, zakorzenione w tradycji autorów takich jak Alexis de Tocqueville (1835), Robert Putnam (1993) czy Francis Fukuyama (1995), ujmuje zaufanie jako jakość relacji międzyludzkich, która pojawia się oddolnie by następnie stać się kulturowym zasobem niezbędnym do utrzymania trwałej demokracji i dobrze prosperującej gospodarki. Wektor przyczynowy przebiega tu w kierunku od mikro do makro – od sieci międzyludzkich po organizacje, instytucje i państwo. To podejście jest podejściem dominującym. Ale istnieje też ujęcie alternatywne, zgodnie z którym zaufanie powstaje dzięki, lub w całości za sprawą, „cywilizowanej sfery publicznej” (Papakostas, 2012) czy też „zinstytucjonalizowanego sceptycyzmu (Cleary and Stokes, 2006), na który składa się racjonalna organizacja polityczno-gospodarcza, a w szczególności przejrzyste, stabilne i konsekwentne prawo, które jest powszechnie i skutecznie wdrażane i egzekwowane. Tutaj wektor przyczynowy biegnie w kierunku makro-mikro, od państwa, organizacji i instytucji do zaufania na poziomie interpersonalnym. Te dwa pojęcia należy traktować nie jako sprzeczne, lecz uzupełniające się. Co ważne ich implikacje w zakresie rozwiązywania konfliktów grupowych za pomocą budowania zaufania też się uzupełniają. I tak na przykład pierwsze podejście zakłada kultywowanie zaufania oddolnie poprzez promowanie kontaktów międzyludzkich, współpracy i dobrowolnego udziału członków wrogich grup we wspólnych przedsięwzięciach. Drugie natomiast kładzie raczej nacisk na potrzebę wzmacniania zaufania przy pomocy odgórnych struktur organizacji i instytucji oraz praw gwarantujących odpowiedzialność, stabilność i przejrzystość relacji społecznych poprzez kontrolę i uważne obserwowanie członków zwaśnionych grup. Bowiem tylko połączenie przejrzystości i konsekwentnego budowania zaufania daje możliwość stopniowego rozwiązywania konfliktów grupowych.
    Źródło:
    Kultura i Polityka; 2015, 17; 125-134
    1899-4466
    Pojawia się w:
    Kultura i Polityka
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Arbuscular mycorrhiza of endemic and endangered plants from the Tatra Mts
    Autorzy:
    Zubek, S
    Turnau, K.
    Blaszkowski, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/57673.pdf
    Data publikacji:
    2008
    Wydawca:
    Polskie Towarzystwo Botaniczne
    Tematy:
    conservation
    endemic plant
    Tatras Mountains
    mycorrhizal status
    endangered plant
    botany
    arbuscular mycorrhiza
    plant species
    Opis:
    The mycorrhizal status of 24 plant species considered as endemic, endangered in Poland and included in the IUCN Red List of Threatened Plants is reported. Selected plants and rhizosphere soil samples were collected in the Tatra Mts (Western Carpathians). Individuals of seriously threatened taxa were obtained from seeds and inoculated with available AM fungal strains under laboratory conditions. AM colonisation was found in 16 plants; 9 species were of the Arum-type, 4 - Paris and 3 taxa revealed intermediate morphology. The mycelium of the fine endophyte (Glomus tenue) and dark septate fungi (DSE) were observed in the material collected in the field. 20 AMF species (Glomeromycota) found in the rhizosphere of the investigated plants were reported for the first time from the Tatra Mts. The results provide information that might be useful for conservation and restoration programmes of these species. Application of AMF in active plant protection projects is discussed.
    Źródło:
    Acta Societatis Botanicorum Poloniae; 2008, 77, 2
    0001-6977
    2083-9480
    Pojawia się w:
    Acta Societatis Botanicorum Poloniae
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The checklist of Impatiens Riv. ex L. (Balsaminaceae) in Nilgiri and Palani Hills of southern Western Ghats (India)
    Autorzy:
    S Jeevith
    Arigela, Ravi Kiran
    Rajeev Kumar Singh
    K Althaf Ahamed Kabeer
    C Rajasekar
    C Kunhikannan
    Powiązania:
    https://bibliotekanauki.pl/articles/2183573.pdf
    Data publikacji:
    2022-07-26
    Wydawca:
    Uniwersytet Pedagogiczny im. Komisji Edukacji Narodowej w Krakowie
    Tematy:
    Balsams
    Endemic
    Grasslands
    Shola forests
    Western Ghats
    niecierpki
    endemiczne
    lasy Shola
    łąki
    Ghaty Zachodnie
    Opis:
    A comprehensive checklist of the genus Impatiens Riv. ex L. (Balsaminaceae) in Nilgiri and Palani of southern Western Ghats, India is presented. After thorough field explorations in these areas from 2012 to 2020 in different seasons, 38 species of Impatiens are recorded, in which 6 species are endemic to Western Ghats and 26 species are endemic to southern Western Ghats of India. Horticultural potential of 18 endemic species of balsam is also discussed.
    W artykule zamieszczono obszerną listę gatunków z rodzaju Impatiens Riv. ex L. (Balsaminaceae), odnotowanych w Nilgiris i na Wzgórzach Palanis (południowa część Ghatów Zachodnich w Indiach). Po dokładnych badaniach terenowych, przeprowadzonych w różnych porach roku w latach 2012-2020, zarejestrowano na analizowanym obszarze 38 gatunków niecierpka, w tym 6 gatunków endemicznych dla całych Ghatów Zachodnich i 26 gatunków dla południowej części Ghatów Zachodnich. Krótko omówiono również potencjał ogrodniczy 18 endemicznych gatunków niecierpków.
    Źródło:
    Annales Universitatis Paedagogicae Cracoviensis Studia Naturae; 2022, 7; 9-22
    2543-8832
    2545-0999
    Pojawia się w:
    Annales Universitatis Paedagogicae Cracoviensis Studia Naturae
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Dziwidło olbrzymie (Amorphophallus titanum), niezwykła bylina sumatry
    Titan arum (Amorphophallus titanum), amazing perennial plant of Sumatra
    Autorzy:
    Wiatrowska, Blanka
    Węgiel, Andrzej
    Kęsy, Mateusz
    Powiązania:
    https://bibliotekanauki.pl/articles/1033714.pdf
    Data publikacji:
    2018
    Wydawca:
    Polskie Towarzystwo Przyrodników im. Kopernika
    Tematy:
    Amorphophallus titanum
    endemic species
    lowland equatorial evergreen rainforests
    Sumatra
    wiecznie zielone lasy tropikalne
    gatunek endemiczny
    Opis:
    Amorphophallus titanum niezwykle rzadko obserwowany, endemiczny gatunek Sumatry, jest byliną wykształcająca jeden z największych kwiatostanów świata. Osiągająca ok. 3 m wysokości kolba i ujmująca ją purpurowa pochwa kwiatostanowa, skutecznie wabią zapylające roślinę chrząszcze, błonkówki oraz muchówki, które zwiedzione intensywnym zapachem padliny, ciepłem wydzielanym przez kwiatostan i jego barwą, kierują się ku znajdującym się w jego wnętrzu kwiatom. Mimo zadziwiających rozmiarów dziwidła olbrzymiego, jego biologia nie została dobrze poznana, a powierzchnia okołorównikowych lasów dwuskrzydlcowych Azji Południowo-Wschodniej, w których znajdują się jego nieliczne, naturalne stanowiska, z roku na rok kurczy się. Deszczowe lasy Indonezji i Malezji, będące jednym z głównych centrów różnorodności biologicznej na świecie, wycinane lub wypalane są bowiem pod plantacje olejowca gwinejskiego (Elaeis guineensis), które w samej Indonezji zajmują już ok. 7,7 mln ha.
    Amorphophallus titanum, an extremely rare, endemic Sumatran species, is a perennial plant which forms one of the largest inflorescences in the world. Reaching up to approx. 3 m in height, the spadix is surrounded by a purple flower sheath which attracts the pollinators - beetles, hymenoptera and flies. Those, deceived by an intense scent of carrion emitted by the flowers and also by its colour, are lured to the flowers hidden inside the spadix. Despite its remarkable size, A. tutanum's biology has not been well known. The equatorial area of Dipterocarpaceae forests in SE Asia, which is the natural habitat of A. titanium, is dwindling. The Indonesian and Malay rainforests, ones of the main biodiversity hotspots in the world, are being cut and burnt down in order to establish African oil palm (Elaeis guineensis) plantations, which only in Indonesia cover an area of approx. 7,7 mln ha.
    Źródło:
    Kosmos; 2018, 67, 2; 257-262
    0023-4249
    Pojawia się w:
    Kosmos
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The effect of water conditions on the phenology and age structure of Luronium natans [L.] Raf. populations
    Autorzy:
    Szmeja, J
    Bazydlo, E.
    Powiązania:
    https://bibliotekanauki.pl/articles/56879.pdf
    Data publikacji:
    2005
    Wydawca:
    Polskie Towarzystwo Botaniczne
    Tematy:
    development stage
    water condition
    Luronium natans
    age structure
    European endemic plant
    aquatic plant
    phenology
    population
    Opis:
    The study presents the results of the analysis of development stages of Luronium natans (L.) Raf. depending on water conditions (pH, light, total nitrogen, total phosphorus, organic carbon) in 21 populations in north-western Poland. The fractions of seedlings, juvenile, mature and generative stems, as well as the course of phenological phenomena were determined. Seedlings are sparse and can be found from May to July. Most of them occur in waters ranging from slightly acid to neutral (pH 6.0-7.0) with TP concentrations of 10-20 µg dm-3, TN concentrations < 1.0 mg dm-3 and DOC concentrations of 3.5-5.0 mg dm-3, on a mineral (5-10% OC) and fairly well lit (31-40% PAR) substrate. The generative phase lasts from May to October. The flowering period is between August and mid-September. Only 35.2±9.4% of flowering stems produce fruits. The plant flowers abundantly in waters with total nitrogen concentrations > 1.2 mg dm-3, that is above the level of TN concentrations most favourable to seedlings and both juvenile and mature individuals. TP and DOC concentrations, and light intensity (PAR) do not influence the size of the generative stems fraction in populations. However, sediment structure is of importance in this respect: about 62.9% of stems flower and fruit on a mineral substrate (< 1% OC), whereas only 17.4% do so on an organic one. The results of this study may be useful in the conservation of this endangered European endemic species.
    Źródło:
    Acta Societatis Botanicorum Poloniae; 2005, 74, 3
    0001-6977
    2083-9480
    Pojawia się w:
    Acta Societatis Botanicorum Poloniae
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Mathematical Modeling of Control Strategies for Visceral leishmaniasis
    Autorzy:
    Onyekwelu, Onuorah Martins
    Baker, Nasasira
    Powiązania:
    https://bibliotekanauki.pl/articles/1839477.pdf
    Data publikacji:
    2021
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    Stability
    equilibrium
    parameterization
    endemic
    basic reproductive number
    simulation
    visceral Leishmaniasis
    Visceral leishmaniasis
    kala-azar
    Cutaneous leishmanisis
    Opis:
    In this paper, a deterministic mathematical model for the transmission dynamics of Visceral leishmaniasis (VL) was formulated and analyzed. The basic reproductive number R0 was obtained using the next generation matrix method. The model which was parameterized using the 2011 cases of Visceral Leishmaniasis in South Sudan, was used to assess two control measures. Numerical simulation reveals that the exposed population is reduced by high detection rate, and low biting rate of sandflies. Further, our model simulation gave the values of the contact rate of susceptible human, α1 and the detection rate of new cases, σ at which the basic reproductive number is less than one, (R0 < 1), equal to one (R0 = 1) and greater than one (R0 > 1).
    Źródło:
    World News of Natural Sciences; 2021, 37; 102-116
    2543-5426
    Pojawia się w:
    World News of Natural Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    SEM observations of pollen grains, fruits and seeds of the Pieniny Mountains [South Poland] endemic species Erysimum pieninicum [Zapal.] Pawl. [Brassicaceae]
    Autorzy:
    Maciejewska-Rutkowska, I
    Bednorz, L.
    Fujiki, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/58978.pdf
    Data publikacji:
    2007
    Wydawca:
    Polskie Towarzystwo Botaniczne
    Tematy:
    electron microscope
    Erysimum pieninicum
    fruit morphology
    Polska
    seed morphology
    botany
    pollen morphology
    Brassicaceae
    Pieniny Mountains
    forest
    endemic species
    Opis:
    Erysimum pieninicum (Zapał.) Pawł. (Brassicaceae) is an endemic species, growing only in Pieniny Mts. The aim of the presented work was to investigate its pollen morphology as well as its ultrastructural traits of pericarp and seed-coat. Pollen grains of this species were of small size, 3-zonocolpate with reticulate ornamentation. The external siliqua surface was of rugose sculpture, covered by numerous, stellate hairs. The internal surface of the fruit was naked and characterized by striate sculpture. The seed-coat ornamentation of E. pieninicum was of blister type.
    Źródło:
    Acta Societatis Botanicorum Poloniae; 2007, 76, 2
    0001-6977
    2083-9480
    Pojawia się w:
    Acta Societatis Botanicorum Poloniae
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Salix x velchevii and S. x ardana [Salicaceae] - two new willow hybrids from the Bulgarian Rhodope Mts.
    Autorzy:
    Zielinski, J
    Petrova, A.
    Pancheva, Z.
    Powiązania:
    https://bibliotekanauki.pl/articles/59218.pdf
    Data publikacji:
    2006
    Wydawca:
    Polskie Towarzystwo Botaniczne
    Tematy:
    Salix x velchevii
    Salix x ardana
    Salix xanthicola
    endemic species
    Salicaceae
    willow
    hybrid
    new hybrid
    Bulgaria
    Rhodope Mountains
    Opis:
    Two previously unknown willow hybrids, Salix × velchevii (S. amplexicaulis Bory × S. xanthicola K.I. Chr.) and S. × ardana (S. alba L. × S. xanthicola K.I. Chr.), are described from the Bulgarian Rhodope Mts. This is the first report on hybridization in the endemic Balkan species S. xanthicola.
    Źródło:
    Acta Societatis Botanicorum Poloniae; 2006, 75, 2; 145-148
    0001-6977
    2083-9480
    Pojawia się w:
    Acta Societatis Botanicorum Poloniae
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Genetic diversity of Galium cracoviense, G. oelandicum and G. sudeticum (Rubiaceae)
    Autorzy:
    Cieslak, E.
    Szelag, Z.
    Powiązania:
    https://bibliotekanauki.pl/articles/58499.pdf
    Data publikacji:
    2010
    Wydawca:
    Polskie Towarzystwo Botaniczne
    Tematy:
    genetic diversity
    Galium cracoviense
    Galium oelandicum
    Galium sudeticum
    Rubiaceae
    endemics
    Leptogalium section
    Galium
    endemic species
    genetic variability
    geographic range
    Opis:
    Galium sect. Leptogalium Lange in NE Europe is represented by few, local endemic species which occur in the area covered by the continental ice sheet in the Pleistocene period. They are: G. cracoviense Ehrend. in S Poland, G. oelandicum (Sterner & Hyl.) Ehrend. in SE Sweden and G. sudeticum Tausch in SW Poland and N Czech Republic. 55 individuals from five populations of these species were analysed using AFLP markers. A total of 193 AFLP bands were detected using three combinations of primers; out of them 159 proved polymorphic (82.4%). The lowest values of Shannon's index and Nei's gene diversity were noted for G. oelandicum and the highest ones for G. sudeticum. The results indicate a relatively high level of genetic variability in each of endemic species in spite of that the studied species occupy very small areas and are represented by a low number of populations. We conclude that additional, demographic and genetic studies are necessary to monitor potential decrease of populations' size resulting mainly from the mechanical destruction of plants and their habitats caused by intense tourism or other human activities (as agriculture, e.g. grazing).
    Źródło:
    Acta Societatis Botanicorum Poloniae; 2010, 79, 4
    0001-6977
    2083-9480
    Pojawia się w:
    Acta Societatis Botanicorum Poloniae
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Growing the endangered species Astragalus nitidiflorus in the nursery: fertilization rate affects growth, and leaf nutrient and chlorophyll contents
    Autorzy:
    Vicente, M.J.
    Martínez-Sánchez, J.J.
    Franco, J.A.
    Bañón, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/11858781.pdf
    Data publikacji:
    2018
    Wydawca:
    Uniwersytet Przyrodniczy w Lublinie. Wydawnictwo Uniwersytetu Przyrodniczego w Lublinie
    Tematy:
    Spain
    plant cultivation
    Astragalus nitidiflorus
    endangered species
    endemic plant
    plant growth
    leaf nutrient content
    chlorophyll content
    fertilization rate
    nodulation
    Opis:
    Astragalus nitidiflorus is an endangered legume endemic to the southeast of the Iberian Peninsula. This species develops symbiotic relationships with N-fixing bacteria. However, the problem of isolating its rhizobia has not been solved. Because poor N fixation in plants can be corrected by fertilization, the effect of N-P-K fertilizers on growth, leaf chlorophyll and mineral ions was studied. Plants of A. nitidiflorus were grown in 100%-substrate with different N-P-K fertilizer rates (mg l–1): 1-1-8 (S0), 69-29-35 (SL), 144-43-131 (SM) and 245-58-235 (SH). A treatment with substrate plus soil from the natural habitat and no fertilizers (T0) was included. The reference foliar contents of N, P and K were 42.5, 3.5 and 36.5 mg g–1, respectively. Although the species did not form root nodules when grown in substrate, T0 plants produced active nodules that allowed the plants to grow properly without fertilization. In the absence of nodules, both N fertilization (~144 mg l–1) and Fe fertilization (>12 mg l–1) are vital, as is, to a lesser extent, K fertilization (~75 mg l–1 K2O). The S0 and SL reduced leaf chlorophyll, while SM prevented its degradation.
    Źródło:
    Acta Scientiarum Polonorum. Hortorum Cultus; 2018, 17, 4; 129-136
    1644-0692
    Pojawia się w:
    Acta Scientiarum Polonorum. Hortorum Cultus
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Cochlearia polonica Frohl. (Brassicaceae), a narrow endemic species of southern Poland: history of conservation efforts, overview of current population resources and genetic structure of populations
    Autorzy:
    Cieslak, E.
    Kazmierczakowa, R.
    Ronikier, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/56510.pdf
    Data publikacji:
    2010
    Wydawca:
    Polskie Towarzystwo Botaniczne
    Tematy:
    Cochlearia polonica
    Brassicaceae
    endemic species
    Southern Poland
    history
    conservation effort
    current population
    population resource
    genetic structure
    genetic variation
    population structure
    Opis:
    Cochlearia polonica Fröhl. (Brassicaceae) is one of the rarest species in the Polish and European flora and a taxon endemic to a very small area in southern Poland. Due to industrial activities and subsequent transformation of habitats it was extinct in all natural localities around 1994. The persistence of the species was ensured thanks to the active protection efforts including a series of transplantations based on the material from the last and decreasing natural population. The history of conservation efforts of C. polonica provides a model example of successful active protection in the European flora. Here, we provide a complete review comprising the following aims: (i) outline of the discovery and taxonomic conceptions on C. polonica, (ii) review of conservation efforts aimed at preserving its populations, (iii) description of the existing population resources, and (iv) analysis of the genetic structure of all existing populations based on previously published data and new, supplementary results.
    Źródło:
    Acta Societatis Botanicorum Poloniae; 2010, 79, 3
    0001-6977
    2083-9480
    Pojawia się w:
    Acta Societatis Botanicorum Poloniae
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Ultrastructural changes in blood cells in the hematopoietic organs of Lake Baikal fish exposed to phenol
    Autorzy:
    Yakhnenko, V.
    Klimenkov, I.
    Belyshenko, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/363134.pdf
    Data publikacji:
    2014
    Wydawca:
    Uniwersytet Warmińsko-Mazurski w Olsztynie
    Tematy:
    blood cells
    endemic fish
    hematopoietic organs
    immune system
    immunocytes
    nonendemic fish
    krwinki
    ryby endemiczne
    układ krwiotwórczy
    układ odpornościowy
    immunocyty
    ryby nieendemiczne
    Opis:
    Baikal Lake fish: stone sculpin (Paracottus knerii), yellowfin (Cottocomephorus grewigkii) and perch (Perca fluviatilis) were exposed for 14 days to phenol (6mg˖L-1). The reaction of blood cells in all studied species had a similar character, whilst, also revealing distinctions. Fast activation of immune processes was found in the pelagic yellowfin. These changes were slower at the coastal stone sculpin. Quantitative changes of blood cells were minor in the coastal nonendemic perch. After four days of exposure, the cells of fish showed signs of destructive processes: strong vacuolization of cytoplasm and partial destruction of the cell membrane. In the cell nucleus the chromatin was condensed, the perinuclear space had expanded and the nuclear membrane had been partly destroyed. In another experiment, stone sculpin and perch were first exposed to phenol for 30 days and then they were kept for another 30 days in water without phenol. In the kidneys and spleen of stone sculpin the processes of lymphopoiesis were observed, whereas in perch the processes of lymphopoiesis and myelopoiesis occurred.
    Źródło:
    Environmental Biotechnology; 2014, 10, 2; 73-79
    1734-4964
    Pojawia się w:
    Environmental Biotechnology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Chorological and conservation status of the endemic cypress, Cupressus atlantica Gaussen, in the High Atlas (Morocco)
    Autorzy:
    Sekiewicz, K.
    Sekiewicz, M.
    Romo, A.
    Didukh, Y.
    Fennane, M.
    Boratynski, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/41144.pdf
    Data publikacji:
    2014
    Wydawca:
    Polska Akademia Nauk. Instytut Dendrologii PAN
    Tematy:
    chorology
    conservation status
    endemic plant
    cypress
    Cupressus atlantica
    Cupressaceae
    forest ecosystem
    degraded ecosystem
    High Atlas Mountains
    plant conservation
    plant geography
    Morocco
    Opis:
    We present a study of the distribution, ecology and conservation status of Cupressus atlantica, an endemic tree of the High Atlas (Morocco). The main populations of this species grow in a reduced area along the N’Fiss valley in the Central High Atlas and are gradually receding. Particular populations are increasingly fragmented and the total area covered by the cypress woodland has decreased to less than a third of the surface occupied in the 1930s. Overgrazing reduces the woodlands’ regenerative capacity, and the exploitation of the wood, linked to traditional uses by the rural society of the N’Fiss valley, directly reduces the number of trees. Great efforts being made to protect the species by the Haut Commissariat aux Eaux et Forêts are having some effect in recent years.
    Źródło:
    Dendrobiology; 2014, 71
    1641-1307
    Pojawia się w:
    Dendrobiology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Distribution, ecology and conservation status of Dionysia involucrata Zaprjag., an endangered endemic of Hissar Mts (Tajikistan, Middle Asia)
    Autorzy:
    Nowak, A.S.
    Nobis, M.
    Nowak, S.
    Nobis, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/57230.pdf
    Data publikacji:
    2014
    Wydawca:
    Polskie Towarzystwo Botaniczne
    Tematy:
    plant distribution
    plant ecology
    conservation status
    Dionysia involucrata
    endangered species
    endemic species
    vegetation
    chasmophyte
    petrophyte
    phytosociology
    syntaxonomy
    Hissar Mountains
    Tajikistan
    Asia
    Opis:
    Dionysia involucrata Zaprjag. (Primulaceae) is known as critically endangered endemic species of Hissar Mountains in Tajikistan. It is reported from few localities mainly in Varzob River valley and its tributaries. The species inhabits steep or overhanging faces of granite rocks in narrow river gorges. During the research all known populations of D. involucrata were examined in respect of the habitat conditions and species composition of vegetation plots. We analyzed the population extent of the species in its range in Tajikistan and the main threats in order to assess its conservation status. The detrended correspondence analysis was performed on a matrix of 65 relevés and 49 species (vascular plants and mosses), to classify the phytocoenosis with domination of D. involucrata according to their floristic composition in relation to other petrophytic vegetation units. Using our field data regarding present extent of occurrence and area of occupancy we conclude that the threat category of D. involucrata should be reassessed from critically endangered to endangered. The species shows decline tendency in extent of occurrence, area of occupancy as well as in number of locations. The vegetation plots with domination of D. involucrata have relatively high level of separateness due to different species composition. We define the new association – Dionysietum involucratae – representing chasmophytic vegetation of submontane and montane zone in Middle Asia (ca. 1000–1600 m a.s.l.). The plots of Dionysietum involucratae were found mainly on granite rocks, on very steep or overhanging faces, on southwestern or southern exposition. The association is rather poor in species with inconsiderable contribution of mosses. Despite the diagnostic species, Campanula incanescens, Carex koshewnikowii and Scutellaria hissarica were the most abundant and frequent taxa within the researched patches of vegetation.
    Źródło:
    Acta Societatis Botanicorum Poloniae; 2014, 83, 2
    0001-6977
    2083-9480
    Pojawia się w:
    Acta Societatis Botanicorum Poloniae
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Response of olfactory receptors and blood cells of Lake Baikal fish to phenol exposure
    Autorzy:
    Yakhnenko, V.
    Klimenkov, I.
    Pastukhova, N.
    Powiązania:
    https://bibliotekanauki.pl/articles/363284.pdf
    Data publikacji:
    2010
    Wydawca:
    Uniwersytet Warmińsko-Mazurski w Olsztynie
    Tematy:
    komórka
    ryby endemiczne
    system immunologiczny
    ryby nieendemiczne
    nabłonek węchowy
    krew obwodowa
    cells
    endemic fish
    immune system
    nonendemic fish
    olfactory epithelium
    peripheral blood
    Opis:
    Exposure to phenol causes ultrastructural disorders in supporting and receptor cells in the peripheral segment of the olfactory organ of yellowfin (Cottocomephorus grewingkii) and in cells in peripheral blood of stone sculpins (Paracottus knerii), yellowfin and perch (Perca fluviatilis). Identical responses to phenol exposure in the blood cells were observed in endemic Lake Baikal fish and in nonendemic fish. Differences were found only in the rate and intensity of the recovery response. Fast activation of immune processes were found in the coastal nonendemic perch, but they were slow in the stone sculpin, a coastal endemic species.
    Źródło:
    Environmental Biotechnology; 2010, 6, 2; 66-73
    1734-4964
    Pojawia się w:
    Environmental Biotechnology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Genetic relationships of Iranian endemic mint species, Mentha mozaffariani Jamzad and some other mint species revealed by ISSR markers
    Autorzy:
    Choupani, A.
    Shojaeiyan, A.
    Maleki, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/80281.pdf
    Data publikacji:
    2019
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    mint
    Mentha spicata
    Mentha longifolia
    Mentha piperita
    Mentha aquatica
    Mentha mozaffarianii
    endemic species
    Iranian species
    genetic realtionship
    cluster analysis
    ISSR marker
    polymerase chain reaction
    electrophoresis
    Źródło:
    BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2019, 100, 1
    0860-7796
    Pojawia się w:
    BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Phytochemical and bioactivity diversity in the extracts from bulbs and leaves of different populations of Allium jesdianum, a valuable underutilized vegetable
    Autorzy:
    Ghasemi Pirbalouti, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/12300024.pdf
    Data publikacji:
    2019
    Wydawca:
    Uniwersytet Przyrodniczy w Lublinie. Wydawnictwo Uniwersytetu Przyrodniczego w Lublinie
    Tematy:
    Iran
    wild plant
    vegetable
    Yazdi onion
    Allium jesdianum
    endemic species
    bulb
    leaf
    plant population
    phytochemical diversity
    antioxidant activity
    antimicrobial activity
    antioxidant agent
    antimicrobial agent
    useful plant
    Opis:
    Allium jesdianum Boiss. & Buhse (Yazdi onion) belonging the family Alliaceae, is an endemic species of Iran that grows wild in the Zagros Mountains range, southwestern Iran. The indigenous people of Iran use the leaves and bulbs of A. jesdianum for the treatment of colds and kidney problems. The bulbs and leaves of various populations of the plant were collected from the alpine regions in Chaharmahal va Bakhtiari province, southwestern Iran. The total phenolic content of ethanol extract was determined by FolinCiocalteu method, the antioxidant activity was evaluated measuring 1,1-diphenyl-2-picrylhydrazyl (DPPH), and the antibacterial activity of the extracts against four bacteria was determined by serial dilution assay. Results indicated that the total phenolic content in ethanol extracts from leaves and bulbs of A. jesdianum ranged between 27.83 to 98.23 mg GAE/g extract. A comparison of all plant extracts in the DPPH assay indicated that ethanol extracts from the populations of A. jesdianum leaves were the most effective free radical scavenging agents. The extracts indicated moderate-to-good inhibitory activities against four bacteria, especially against B. cereus. This finding suggests that the bulbs and leaves of A. jesdianum may be considered a natural source of antioxidants and antimicrobial agents.
    Źródło:
    Acta Scientiarum Polonorum. Hortorum Cultus; 2019, 18, 2; 115-122
    1644-0692
    Pojawia się w:
    Acta Scientiarum Polonorum. Hortorum Cultus
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    ISSR analysis points to relict character of Aconitum bucovinense Zapal. (Ranunculaceae) at the range margin
    Autorzy:
    Boron, P.
    Zalewska-Galosz, J.
    Sutkowska, A.
    Zemanek, B.
    Mitka, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/59093.pdf
    Data publikacji:
    2011
    Wydawca:
    Polskie Towarzystwo Botaniczne
    Tematy:
    Carpathians Mountains
    conservation genetics
    endemic species
    marginal population
    schizo-endemism
    relict population
    Aconitum bucovinense
    Ranunculaceae
    Polish Red Data Book of Plants
    genetic diversity
    genetic structure
    ISSR technique
    Opis:
    Aconitum bucovinense, a high-mountain species endemic to the Eastern and Southern Carpathians, including the Apuseni Mountains, is legally protected and classified in the Polish Red Data Book of Plants. It attains its NW geographical range in two peripheral populations in the Western Bieszczady Mountains (Polish Eastern Carpathians), isolated by a distance of 13.1 km. PCR-ISSR analysis has been used to elucidate the within- and among-populational levels of species genetic diversity. A UPGMA and block clustering showed discreteness of the populations and subpopulations based on ISSR banding pattern. Analysis of Molecular Variance (AMOVA) revealed significant divergence (P = 0.024) of the two marginal populations and highly significant (P < 0.001) differentiation of subpopulations within populations. The theta index calculated for the two marginal populations and the core population in the Carpathians was 0.131 ±0.030 S.D. Most of the population-genetic diversity indices of the marginal populations were not different from those in the core area but the Shannon’s and rarity indices were lower in the marginal populations. It seems that founder effect and subsequent genetic bottleneck resulted in a fine-scale population genetic structure. The marginal populations under study need a relevant recovery program to maintain their genetic diversity.
    Źródło:
    Acta Societatis Botanicorum Poloniae; 2011, 80, 4
    0001-6977
    2083-9480
    Pojawia się w:
    Acta Societatis Botanicorum Poloniae
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    HPLC and ESI-MS analysis of vanillin analogue 2-hydroxy-4-methoxy benzaldehydein swallow root - the influence of habitat heterogeneity on antioxidant potential
    Autorzy:
    Pradeep, M.
    Shetty, N.P.
    Giridhar, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/12298366.pdf
    Data publikacji:
    2019
    Wydawca:
    Uniwersytet Przyrodniczy w Lublinie. Wydawnictwo Uniwersytetu Przyrodniczego w Lublinie
    Tematy:
    Decalepis hamiltonii
    endemic plant
    root tuber
    high performance liquid chromatography
    electrospray ionization mass spectrometry
    2-hydroxy-4-methoxybenzaldehyde
    habitat heterogeneity
    antioxidant potential
    phenolic compound
    flavonoids
    vanillin
    isomer
    Opis:
    Decalepis hamiltonii Wight & Arn., is a plant species that is endemic to southern parts of India. The aim of this study is to explore the influence of habitat heterogeneity on total phenolics, flavonoids, flavor compound 2-hydroxy-4-methoxy benzaldehyde (2H4MB) and antioxidant potential of tubers. The flavor metabolite 2H4MB was quantified by HPLC using isocratic solvent system (methanol : acetonitrile : water : acetic acid 47 : 10 : 42 : 1) that indicates obvious difference in 2H4MB content of tubers with a maximum of 96.4 ±2.6 and 92.6 ±1.2 mg 100 g–1 dry weight basis (DW) in samples from B.R. Hills and Mysore area of Karnataka, followed by samples from Tirumalai Hills and Kurnool from Andhra Pradesh (89.02 ±0.9 mg 100 g–1 DW), Tamil Nadu (81.6 ±2.4 mg 100 g–1 DW) and Kerala (80.18 ±1.1 mg 100 g–1 DW) of tubers. There was variation in total phenolics, total flavonoids and 2H4MB content of root samples collected from different habitats. Also significant variation in free radical scavenging potential of methanol root extracts was noticed, which is directly proportional to the phenolics, and flavonoids content. Overall, there was 10–16% difference in content of 2H4MB in D. hamiltonii tubers that were collected from different natural habitats, and this habitat heterogeneity has to be considered vital, while using such tubers for edible purposes and food formulations.
    Źródło:
    Acta Scientiarum Polonorum. Hortorum Cultus; 2019, 18, 2; 21-28
    1644-0692
    Pojawia się w:
    Acta Scientiarum Polonorum. Hortorum Cultus
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Propagation of endemic and endangered Sternbergia lutea with a high ornamental value by bulb chipping and plant growth regulators
    Autorzy:
    Nazari, F.
    Powiązania:
    https://bibliotekanauki.pl/articles/12301785.pdf
    Data publikacji:
    2019
    Wydawca:
    Uniwersytet Przyrodniczy w Lublinie. Wydawnictwo Uniwersytetu Przyrodniczego w Lublinie
    Tematy:
    Iran
    wild plant
    winter daffodil
    Sternbergia lutea
    endemic plant
    endangered plant
    rare plant
    ornamental plant
    bulbous plant
    plant growth regulator
    plant propagation
    bulb chipping
    bulb
    bulblet
    plant regeneration
    Opis:
    Autumn daffodil (Sternbergia lutea) is a rare and endangered bulbous plant with yellow flowers grown naturally in Iran and unfortunately for different reasons this plant is at the risk of eradication. Natural multiplication rate of S. lutea is low, thus propagation by chipping method is one inexpensive and simple way to overcome this problem. This research was therefore performed to investigate the propagation method in two experiments. In the first experiment, the effects of some plant growth regulators (PGRs) on induction and regeneration of bulblets from bulb chips (propagules) were evaluated. The propagules were prepared by chipping method and treated with indole butyric acid (IBA), gibberellic acid (GA3), benzyl adenine (BA), kinetin (Kin) and cycocel (CCC) at 100 and 200 mg L–1 concentrations for 2 h and then incubated for two months at 20 ±1°C. At the end of incubation, the results showed the highest percentage of concurrent bulblet + root regeneration (CBRR), number and fresh weight of bulblets related to 100 mg L–1 GA3. The highest percentage of only bulblet regeneration (OBR), only root regeneration (ORR) and non-regeneration were obtained at 200 mg L–1 IBA, 100 mg L–1 Kin and control (distillated water: DW) treatments, respectively. In the second experiment, the bulblets that had rooted from each treatment of the first experiment were planted and the produced bulbs were compared. The results indicated that the highest percentage of bulblet sprouting, bulb number and diameter were found at 100 mg L–1 GA3. Therefore, the application of GA3 with mentioned concentration is appropriate for vegetative propagation of this plant by bulb chipping.
    Źródło:
    Acta Scientiarum Polonorum. Hortorum Cultus; 2019, 18, 2; 123-131
    1644-0692
    Pojawia się w:
    Acta Scientiarum Polonorum. Hortorum Cultus
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Nefropatia mezoamerykańska – nowe wyzwanie dla lekarzy medycyny pracy
    Mesoamerican nephropathy – a new challenge for occupational physicians
    Autorzy:
    Kanclerz, Katarzyna
    Wołyniec, Wojciech
    Rutkowski, Przemysław
    Renke, Marcin
    Powiązania:
    https://bibliotekanauki.pl/articles/2085527.pdf
    Data publikacji:
    2020-05-15
    Wydawca:
    Instytut Medycyny Pracy im. prof. dra Jerzego Nofera w Łodzi
    Tematy:
    nefropatia mezoamerykańska
    nefropatia endemiczna
    przewlekła choroba nerek
    ocena zdolności do pracy
    albuminuria
    opieka profilaktyczna nad pracownikami
    mesoamerican nephropathy
    endemic nephropathy
    chronic kidney disease
    evaluation of fitness for work
    preventive care over employees
    Opis:
    Nefropatia mezoamerykańska (mesoamerican nephropathy – MeN) to endemiczna forma przewlekłej choroby nerek (PChN), która nie ma związku z czynnikami ryzyka rozwoju PChN, takimi jak cukrzyca i nadciśnienie tętnicze. Występuje przede wszystkim u mężczyzn zatrudnionych w rolnictwie, wykonujących ciężką pracę fizyczną w gorącym i suchym klimacie. Od końca lat 90. XX w. zanotowano znaczący wzrost liczby zachorowań na PChN w Ameryce Środkowej i południowym Meksyku, a częstość jej występowania w tym regionie jest prawie 9-krotnie wyższa niż w Stanach Zjednoczonych. Najwyższa na świecie śmiertelność z powodu PChN jest w Salwadorze: w latach 1984–2005 wzrosła 10-krotnie. Patofizjologia MeN pozostaje niewyjaśniona. W materiale histopatologicznym obecne są przewlekłe zmiany cewkowo-śródmiąższowe, którym mogą towarzyszyć zmiany w kłębuszkach nerkowych. Na rozwój choroby mają istotny wpływ powtarzany cyklicznie stres cieplny, związane z nim nadmierne pocenie się oraz odwodnienie. Choroba stanowi ważny problem społeczny i ekonomiczny oraz wyzwanie w zakresie diagnostyki, terapii i profilaktyki dla lekarzy wielu specjalności, szczególnie dla lekarzy medycyny pracy.
    Mesoamerican nephropathy (MeN) is an endemic form of chronic kidney disease (CKD) that is not related to risk factors for CKD, such as diabetes and hypertension. It primarily affects men, rural and agricultural laborers, who work in an extremely hot and dry environment. The greatest increase in the prevalence of CKD, particularly since the late 1990s, has been reported in Central America and Southern Mexico, where the prevalence is almost 9 times higher than in the USA. The highest mortality associated with CKD is reported in El Salvador where a 10-fold increase was recorded in 1984–2005. In histological examination, MeN patients manifest tubulointerstitial lesions and, in some cases, also lesions in the glomeruli. The cause of MeN remains unclear. Repeated episodes of occupational heat stress, and sweating accompanied by water loss, have a significant impact on the disease development. The disease is a significant social and economic problem, and a challenge in the field of diagnostics, therapy and prevention for physicians of many specialties, especially for occupational physicians.
    Źródło:
    Medycyna Pracy; 2020, 71, 3; 353-361
    0465-5893
    2353-1339
    Pojawia się w:
    Medycyna Pracy
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
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