Showing 401 - 420 results of 657 for search '"extinction"', query time: 0.06s Refine Results
  1. 401

    Nano-shaping of chiral photons by Sunaba Yuji, Ide Masaki, Takei Ryo, Sakai Kyosuke, Pin Christophe, Sasaki Keiji

    Published 2023-05-01
    “…Theoretically, the ultimate enhancement might be achieved by reducing the “photon size” to the molecular extinction cross-section. In addition, desired control of electronic transitions in molecules can be realized if the “photon shape” can be manipulated on a single-nanometer scale. …”
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    Article
  2. 402

    High survival promotes bunchgrass persistence in old‐growth savannas under different fire regimes by Jennifer M. Fill, Raelene M. Crandall

    Published 2024-12-01
    “…They are flammable and can resist extinction for decades. Although clonal grasses as a functional group are considered resilient to fire regime variation, data‐based research on clonal grass dynamics under multiple different fire regimes is still lacking. …”
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  3. 403

    Morphological patterns of the European bison (Bison bonasus) skull by Ozan Gündemir, Tomasz Szara

    Published 2025-01-01
    “…Abstract This study aimed to investigate the effects of environmental factors, sexual selection, and genetic variation on skull morphology by examining the skull structure of the European bison, a species at risk of extinction, and comparing it to other bovid species. …”
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    Article
  4. 404

    On the stability of periodic solutions in the perturbed chemostat by Frédéric Mazenc, Michael Malisoff, Patrick D. Leenheer

    Published 2007-01-01
    “…Thisis significant because it reproduces the realistic ecologicalsituation where the species and substrate concentrations oscillate.We show that the stability is maintained when the model is augmentedby additional species that are being driven to extinction. We alsogive an input-to-state stability result for the chemostat-trackingequations for cases where there are small perturbations acting onthe dilution rate and initial concentration. …”
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  5. 405

    First-principles investigation of Ra doping effects on structural, electronic, and optical properties of BaTiO3 perovskite for solar cell applications by Sonia Chahar, Krishna Kumar Mishra, Rajnish Sharma

    Published 2025-01-01
    “…The optical properties of these materials, including dielectric constant, susceptibility, optical conductivity, polarizability (real and imaginary), absorption coefficient, refractive index, extinction coefficient, and reflectivity, were thoroughly examined. …”
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  6. 406

    Étude ethnotaxonomique des espèces fruitières spontanées comestibles chez l’ethnie Diola d’Oussouye (Sénégal) by Yves Djihounouck, Doudou Diop, César Bassène, Mame Samba Mbaye, Richard Demba Diop, Babacar Faye, Kandioura Noba

    Published 2019-03-01
    “…However, climate change and human action have led to a degradation of the natural ecosystems and extinction for certain plant. This study contributes to a better knowledge of popular classification systems of spontaneous plants. …”
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  7. 407

    Optimization of African indigenous vegetables production in sub Saharan Africa: a review by Jefline J. Kodzwa, Godwil Madamombe, Esther N. Masvaya, Justice Nyamangara

    Published 2023-10-01
    “…The recent increase in demand for AIVs brings about the need to match cultivation with consumption to prevent the extinction of these nutritious vegetables through overexploitation. …”
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    Article
  8. 408

    Time-periodic dynamics in COVID-19 transmission considering the impact of population disbelief and fear by Mahmoud A. Ibrahim, Attila Dénes

    Published 2025-03-01
    “…Numerical simulations validate the theoretical findings and provide a nuanced understanding of disease persistence and extinction. The impact of population disbelief and fear on the risk of COVID-19 is investigated, revealing critical insights for public health interventions. …”
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    Article
  9. 409

    Electrical Stimulation of the Ear, Head, Cranial Nerve, or Cortex for the Treatment of Tinnitus: A Scoping Review by Derek J. Hoare, Peyman Adjamian, Magdalena Sereda

    Published 2016-01-01
    “…This change in activity should alter or interrupt the tinnitus percept (reduction or extinction) making it less bothersome. Here we review developments in therapies involving electrical stimulation of the ear, head, cranial nerve, or cortex in the treatment of tinnitus which demonstrably, or are hypothesised to, interrupt pathological neuronal activity in the cortex associated with tinnitus.…”
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  10. 410

    Simulation of structured populations in chemically stressed environments by Thomas G. Hallam, Qingping Deng

    Published 2005-10-01
    “…It is demonstrated that the relationship between resource levels and toxicant concentrations is crucial in determining persistence or extinction of the population.…”
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  11. 411

    Normal CT Anatomy, Morphometry, and Volumetry of the Skull in Urial Sheep (Ovis vignei) by Omid Zehtabvar, Majid Masoudifard, Javad Abbasi, Seyyed Hossein Modarres Tonekabony, Amin Zamani

    Published 2024-01-01
    “…Considering the importance of this breed in the world and its extinction, there is a need to determine the anatomy of the head area or any other disease such as fractures, dental, and infectious diseases. …”
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  12. 412

    Potentiel floristique du sous-bois des agrosystèmes à Elaeis guineensis Jacq. en zone équatoriale (Ngwei, Cameroun) by Baruch Batamack Nkoué, Damien Marie Essono, Thomas Guillaume, Émile Narcisse Njila Nana, Hyacinthe Angoni, Jean Louis Fobane, Armand William Mala

    Published 2024-03-01
    “…Old palm groves are colonised by phanerophytes and several woody species threatened by extinction at different levels according to the International Union for Conservation of Nature’s (IUCN) red list. …”
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  13. 413

    Câteva considerații asupra receptării protocronismului românesc by Vlad-Ion Pappu

    Published 2017-12-01
    “…The occasion for this academic recurrence was the celebration of a quarter century after Edgar Papu’s extinction, as well as the recent occurrence of a new contribution to the theme in the monumental synthesis elaborated by Acad. …”
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  14. 414

    Les lémuriens subfossiles dans le Nord-Ouest de Madagascar, du terrain à la diffusion des connaissances ou 15 ans de recherches franco-malgaches by Dominique Gommery, Beby Ramanivosoa

    Published 2011-10-01
    “…If their origin is still not clear, numerous extinct subfossils species have been recorded for at least 26 000 years, the more recent ones being only a few hundred years old. …”
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  15. 415

    Modeling frequency-dependent selection with an application to cichlid fish by Sheree L. Arpin, J. M. Cushing

    Published 2008-09-01
    “…We establish conditions on model parameters under which the modelpredicts extinction and conditions under which there exists a unique positive(survival) equilibrium. …”
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  16. 416

    Occurrence of Morphological and Anatomical Adaptive Traits in Young and Adult Plants of the Rare Mediterranean Cliff Species Primula palinuri Petagna by Veronica De Micco, Giovanna Aronne

    Published 2012-01-01
    “…This species is declared at risk of extinction due to human impact on the coastal areas in question. …”
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  17. 417

    Propithecus verreauxi demography spanning 40 years at Bezà Mahafaly Special Reserve, southwest Madagascar by Joelisoa Ratsirarson, Jeannin Ranaivonasy, Richard Lawler, Isabella Fiorentino, Nelson Rios, Alison Richard

    Published 2025-01-01
    “…Virtually all 107 extant lemur species are threatened with extinction or critically endangered, and a better understanding of demography and the drivers of demographic change is needed to inform management strategies for surviving wild populations. …”
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  18. 418

    Computational Investigation of the Electronic and Optical Properties of Planar Ga-Doped Graphene by Nicole Creange, Costel Constantin, Jian-Xin Zhu, Alexander V. Balatsky, Jason T. Haraldsen

    Published 2015-01-01
    “…Using density functional theory with a local density approximation, we simulate the electronic band structure and show the effects of impurity doping (0–3.91%) in graphene on the electron density, refractive index, optical conductivity, and extinction coefficient for each doping percentage. Here, gallium atoms are placed randomly (using a 5-point average) throughout a 128-atom sheet of graphene. …”
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  19. 419

    Observation Study on the Size Distribution of Sand Dust Aerosol Particles over Yinchuan, China by Jiandong Mao, Hongjiang Sheng, Hu Zhao, Chunyan Zhou

    Published 2014-01-01
    “…The particle number size distributions were retrieved from the aerosol optical depth (AOD) by use of the extinction inversion method. The experiment results show that although the averaged size distribution satisfies basically the Junge function, there are two obvious peaks at the particle radius of 0.6 μm and 1.4 μm, respectively. …”
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  20. 420

    Buzzing Guardians Buzzing Guardians: Protecting Pollinators in Agricultural Landscapes by Hunasikote Shamappa Venu, Amala Udayakumar, A.N. Shylesha, Timalapur M. Shivalingaswamy

    Published 2024-11-01
    “…Currently, most of the pollinators are appearing in red data book as their population and abundance depleting in the ecosystem. Their extinction was driven by threats like habitat loss, climate change, urbanization, use of chemical pesticides, pest and diseases. …”
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