Results 141 to 150 of about 287,639 (338)

Reliability of environmental sampling to quantify Mycobacterium avium subspecies paratuberculosis on California free-stall dairies [PDF]

open access: bronze, 2009
Sharif S. Aly   +7 more
openalex   +1 more source

Homo heidelbergensis: The Tool to Our Success [PDF]

open access: yes, 2016
Homo heidelbergensis, a physiological variant of the species Homo sapien, is an extinct species that existed in both Europe and parts of Asia from 700,000 years ago to roughly 300,000 years ago (carbon dating). This “subspecies” of Homo sapiens, as it is
Burkard, Alexander
core   +1 more source

Sedum diversiflorum sp. nov. (Crassulaceae), a new species with variable merosity from the Satsunan Islands, Kagoshima, Japan

open access: yesNordic Journal of Botany, EarlyView.
We re‐examined the taxonomic status of a plant previously identified as Sedum formosanum subsp. formosanum from four islands in the Satsunan Islands, Japan. To clarify its taxonomic identity, we conducted morphological and phenological comparisons and performed molecular phylogenetic analyses based on nuclear internal transcribed spacer (ITS) and three
Takuro Ito   +5 more
wiley   +1 more source

Fusobacterium Species and Subspecies Differentially Affect the Composition and Architecture of Supra- and Subgingival Biofilms Models

open access: yesFrontiers in Microbiology, 2019
Fusobacteria are common obligately anaerobic Gram-negative bacteria of the oral cavity that may act as a bridge between early and late colonizing bacteria in dental plaque and have a role in oral and extra-oral infections.
Thomas Thurnheer   +3 more
doaj   +1 more source

Wing geometric morphometrics and microsatellite analysis provide similar discrimination of honey bee subspecies

open access: yesApidologie, 2014
Identification of honey bee (Apis mellifera) subspecies is important for their protection. It is also used by queen breeders to maintain some breeding lines. In this study, we compared three methods of subspecies identification based on the following: 17
A. Oleksa, A. Tofilski
semanticscholar   +1 more source

A new species of Hypericum section Taeniocarpium (Hypericaceae) from Türkiye

open access: yesNordic Journal of Botany, EarlyView.
A new species, Hypericum aladaglariense, is described and illustrated from Yahyalı, Kayseri Province in Türkiye. The new species belongs to Hypericum sect. Taeniocarpium. It is related to H. linarioides, H. armenum, and H. theodori, which differs by its leaves, bract, bracteole, sepal, and petal features.
Hayri Duman   +3 more
wiley   +1 more source

Combinatorial species and graph enumeration [PDF]

open access: yes, 2013
In enumerative combinatorics, it is often a goal to enumerate both labeled and unlabeled structures of a given type. The theory of combinatorial species is a novel toolset which provides a rigorous foundation for dealing with the distinction between ...
Hardt, Andy   +3 more
core  

Characteristics of the submicroscopic structure of the leaf epidermis in Hypodematium (Hypodematiaceae) from China and its taxonomic significance

open access: yesNordic Journal of Botany, EarlyView.
We carefully observed the submicroscopic structural characteristics of the hairs of the stipe, rachis, costae, fronds and indusia of 15 species of Hypodematium from China and photographed them under an anatomical microscope and scanning electron microscope (SEM).
Xiaojuan Li, Chao Zhang, Jianxiu Li
wiley   +1 more source

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