Results 31 to 40 of about 152,766 (246)

LC‐DAD‐MSn and HR‐LC‐QTOF analysis of Ziziphus budhensis leaves and evaluation of their in vitro and in vivo biological activities

open access: yesChemistry &Biodiversity, Accepted Article.
Ziziphus budhensis is a species described in 2015 in Nepal poorly studied for its phytochemical composition and possible bioactivities. In this study, six extracts were obtained from Z. budhensis leaves using ultrasound assisted extraction with solvents in increasing polarity.
Samjhana Bharati   +7 more
wiley   +1 more source

Conservation of mangrove forest covers in Kochi coast [PDF]

open access: yes, 2011
Mangroves are salt-tolerant plants of tropical and subtropical intertidal regions of the world. The specific regions where these plants occur are called mangrove ecosystems.
Manjusha, U   +2 more
core  

Comparative Biology of Temperate and Subtropical Bark and Ambrosia Beetles (Coleoptera: Scolytidae, Platypodidae) in Indiana and Florida [PDF]

open access: yes, 2017
Bark and ambrosia beetles were compared from two intensively studied sites. The Indiana site produced 58 species, the Florida site 57 species; 17 species occurred at both sites. Much greater plant host diversity at the Indiana site seems balanced by more
Atkinson, Thomas H, Deyrup, Mark
core   +2 more sources

New Pyridobenothiazolone Derivatives Display Nanomolar Pan‐Serotype Anti‐Dengue Virus Activity

open access: yesChemMedChem, EarlyView.
A ligand‐based strategy is employed, starting from hit compound 2, to develop the C‐2 modified pyridobenzothiazolone 19 as a pan‐serotype nanomolar DENV‐1‐4 inhibitor. Investigations of the mechanism reveal the peculiar ability to abolish the infectivity of virions in a second infection.
Tommaso Felicetti   +13 more
wiley   +1 more source

Testing mechanisms of compensatory fitness of dioecy in a cosexual world [PDF]

open access: yes, 2019
Questions: All else being equal, populations of dioecious species with a 50:50 sex ratio have only half the effective reproductive population size of bisexual species of equal abundance. Consequently, there is a need to explain how dioecious and bisexual
Du, Y   +10 more
core   +2 more sources

Shifting baselines of coral‐reef species composition from the Late Pleistocene to the present in the Florida Keys

open access: yesThe Depositional Record, EarlyView.
We produced the first reconstruction of the coral species composition of MIS5d–a reefs in the Florida Keys and compared it with existing regional records from MIS5e, the Holocene, the recent past (1996) and the present (2022) to evaluate how Florida's reefs changed throughout the late Quaternary.
Lauren T. Toth   +3 more
wiley   +1 more source

Nature, origin and significance of a clayey cave deposit: Relationship between karst and Oligocene/Miocene tephra (NW Dinarides)

open access: yesThe Depositional Record, EarlyView.
A limestone cave in the NW Dinarides exhibits an anomalous presence of montmorillonite clay, not commonly found in surrounding caves, posing questions about its origin and age. Analysis reveals a composition similar to weathered tephra from the Smrekovec Volcanic Complex, suggesting transport by north‐east winds.
Nadja Zupan Hajna   +12 more
wiley   +1 more source

Diversity and distribution of Asian Lejeuneaceae subfamily Ptychanthoideae [PDF]

open access: yes, 1991
A synopsis is provided of 88 species in 17 genera currently recognized in Lejeuneaceae subfamily Ptychanthoideae sensu lato (including Nipponolejeunea) of Asia. Taxonomic novelties include Thysananthus flavescens (Hatt.) comb. nov.
Gradstein, Stephan Robbert
core  

A meteorological overview of the Pacific Exploratory Mission (PEM) Tropics period [PDF]

open access: yes, 1999
NASA's Pacific Exploratory Mission-Tropics (PEM-T) experiment investigated the atmospheric chemistry of a large portion of the tropical and subtropical Pacific Basin during August to October 1996.
Blake, DR   +8 more
core   +2 more sources

Most young leaves pale in comparison to mature leaves: delayed greening is neither binary nor tropical

open access: yesEcography, EarlyView.
Delayed greening, the phenomenon in which expanding leaves appear red, blue or pale green due to low chlorophyll content, has long intrigued ecologists. However, little is known about what type of species are most likely to delay greening or which environmental conditions are associated with delayed greening.
Giancarlo M. Chiarenza, Angela T. Moles
wiley   +1 more source

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