Results 41 to 50 of about 23,412 (223)

New high-performance liquid chromatography-dad method for analytical determination of arbutin and hydroquinone in rat plasma [PDF]

, 2015
Natural substances present in herbal preparations should be carefully used because they can give toxic or therapeutic effects despite of their amount or the way of administration.
Altieri, I., D'Amore, E., Gallo, F. R., Multari, G., PAGLIUCA, GIORDANA, Panzini, G.   +5 more
core   +2 more sources

Holocene sea‐level and environmental changes on the Isle of Mull, Scotland

Journal of Quaternary Science, EarlyView.
ABSTRACT Sea‐level and coastal changes are reconstructed on the Isle of Mull, western Scotland, from 10 988 to 10 507 cal BP to the present. This research has produced the first SLIP for the Isle of Mull. A multiproxy approach including pollen, spore, foraminifera and diatom analyses reveals palaeoenvironmental changes from two coastal sites.
Katherine A. Selby, Jane Wheeler, William E. N. Austin, Heather Austin, Tom Hill, Sarah L. Bradley, Sally Derrett   +6 more
wiley   +1 more source

Sensitivity of the grassland-forest ecotone in East African open woodland savannah to historical rainfall variation [PDF]

, 2014
. Fossil pollen records provide key insight into the sensitivity of terrestrial ecosystems to climate change at longer time scales. However, tracing vegetation response to relatively modest historical climate fluctuations is often complicated by the ...
Gelorini, Vanessa, Ssemmanda, Immaculate, Verschuren, Dirk   +2 more
core   +1 more source

Holocene palaeoenvironmental reconstruction of sea level, coastal and vegetation changes along the southern Solway Firth, United Kingdom

Journal of Quaternary Science, EarlyView.
Abstract Holocene relative sea level (RSL) changes were reconstructed from four sites along the less‐studied southern Solway Firth. A multiproxy approach, including lithostratigraphical and biostratigraphical analyses, combined with radiocarbon dating, produced ten sea level index points (SLIPs).
Dayang Siti Maryam Binti Mohd Hanan, Katherine Selby, Sarah L Bradley, Sally Derrett   +3 more
wiley   +1 more source

INDEPENDENT ORIGINATION OF FLORAL ZYGOMORPHY, A PREDICTED ADAPTIVE RESPONSE TO POLLINATORS: DEVELOPMENTAL AND GENETIC MECHANISMS [PDF]

, 2016
Observations of floral development indicate that floral organ initiation in pentapetalous flowers more commonly results in a medially positioned abaxial petal (MAB) than in a medially positioned adaxial petal (MAD), where the medial plane is defined by ...
Bukhari, Ghadeer, Zhang, Wenheng
core   +1 more source

Reconstructing post‐crisis recovery in the hinterlands of Constantinople: A high‐resolution first‐millennium CE pollen record from Lake Yeniçağa (NW Türkiye)

Journal of Quaternary Science, EarlyView.
ABSTRACT Facing a novel plague pandemic, military invasions, and political–economic transformations, societies of the eastern Roman (Byzantine) empire had to adapt to a variety of pressures and new ways of exploiting their natural environments during the mid‐1st millennium CE.
Cristiano Vignola, Mustafa Doğan, Warren Eastwood, John Haldon, Alessia Masi, Neil Roberts, Çetin Şenkul, Adam Izdebski   +7 more
wiley   +1 more source

Ericaceae from Serra de São José and Serra do Lenheiro, Minas Gerais, Brazil [PDF]

Rodriguésia
Serra de São José and Serra do Lenheiro are mountain ranges situated in a transitional zone between the Cerrado and Atlantic Forest domains, with elevations ranging from 850 to 1,430 m and 900 to 1,246 m, respectively.
Lívia Garcia, José Nascimento Jr
doaj   +1 more source

Alpine flora of Kashmir Himalaya: floristic assessment, life history traits and threat status

Nordic Journal of Botany, EarlyView.
Alpine ecosystems in the Himalaya are considered to be at a higher risk to anthropogenic global change drivers. The Kashmir Himalaya, located in the north‐western side of the Himalayan biodiversity hotspot, harbors a diverse alpine flora, which remains systematically little investigated.
Bilal A. Rasray, Showkeen A. Lone, Rameez Ahmad, Tajamul Islam, Hitendra Padalia, Anzar Ahmad Khuroo   +5 more
wiley   +1 more source

Catálogo sistemático dos pólens das plantas arbóreas do Brasil meridional: XVI - Ericaceae Catalogue of southern brazilian pollen grains

Memorias do Instituto Oswaldo Cruz, 1972
Foram estudadas as tétradas polínicas de 9 espécies de Ericaceae ocorrentes no Estado de Santa Catarina. Entre elas destaca-se somente uma espécie, Gaultheria ulei, por ter tétradas menores que as deamis.
Ortrud Monika Barth, Alda Ferreira Barbosa   +1 more
doaj   +1 more source

Epiparasitic plants specialized on arbuscular mycorrhizal fungi [PDF]

, 2002
Over 400 non-photosynthetic species from 10 families of vascular plants obtain their carbon from fungi and are thus defined as myco-heterotrophs. Many of these plants are epiparasitic on green plants from which they obtain carbon by 'cheating' shared ...
AH Fitter, Alicia Sérsic, Andres Wiemken, D Redecker, D Redecker, D Robinson, D Schwarzott, David J. Read, Dirk Redecker, DL Swofford, DL Taylor, E Björkman, FA Smith, Isabelle Hijri, JD Bever, Jonathan R. Leake, JR Leake, KW Cullings, L Lanfranco, Laura Domínguez, M Gardes, M Yamato, Martin I. Bidartondo, MGA van Der Heijden, MI Bidartondo, MI Bidartondo, NC Johnson, NC Johnson, PW Price, R Molina, S Imhof, SE Smith, SL McKendrick, SW Simard, T Helgason, T Helgason, Thomas D. Bruns, TJ White, TP McGonigle   +38 more
core   +2 more sources