Results 101 to 110 of about 166,060,240 (207)

Estimate of surface PCO2, in the Gulf of California from underway pH measurements and satellite imagery

open access: yesCiencias Marinas, 1997
The feasibility of estimating the partial pressure of CO2 (PCO2) from underway measurements of sea-surface temperature, pH, salinity and specific alkalinity was tested in the Gulf of California; PCO2 was also estimated from satellite-obtained sea-surface
A. Zirino   +6 more
doaj   +1 more source

Molecular methods for differentiating Phragmites australis subspecies and identification of hybrid stands in the Upper Midwestern United States

open access: yesApplications in Plant Sciences, EarlyView.
Abstract Premise In North America, Phragmites australis (common reed) has drawn a great deal of research attention. Non‐native P. australis subsp. australis is a noxious weed that has locally displaced native P. australis subsp. americanus in some areas.
Nicholas P. Tippery   +8 more
wiley   +1 more source

SURFACE HYDROGRAPHY IN THE NORTHERN GULF OF CALIFORNIA TAKEN BY A THERMOSALINOMETER

open access: yesRa Ximhai, 2017
Through direct measurements of temperature, salinity and density obtained by a thermosalinometer in the northern Gulf of California, superficial scalar fields were obtained for these variables in the periods of January, March, June 1995 and March ...
Emilio Palacios-Hernández   +3 more
doaj  

Fine-scale site fidelity in California sea lions, Zalophus californianus, in the colony at Los Islotes, La Paz Bay, Mexico

open access: yesCiencias Marinas, 2019
Fine-scale site fidelity in polygynous pinnipeds influences individual interactions, social stability, and gene flow; over time, demographic processes may be altered, and local extinction of some colonies may occur.
Andrea Rayas-Estrada   +1 more
doaj   +1 more source

Dental crown morphological variation and heterodonty in carcharhiniform sharks

open access: yesThe Anatomical Record, EarlyView.
Abstract Elasmobranch teeth are highly mineralized structures that constitute the majority of the fossil record for this group. Despite their taxonomic and evolutionary significance, detailed descriptions of dental morphology remain scarce. The order Carcharhiniformes, the most diverse among sharks, comprises 304 valid species that display remarkable ...
Flávia Zanini, Karla D. A. Soares
wiley   +1 more source

First record of orcas (Orcinus orca) preying on a prickly shark (Echinorhinus cookei) in the Gulf of California: insights into shark ecology

open access: yesFrontiers in Fish Science
The first documented instance of predation on a prickly shark (Echinorhinus cookei) by orcas (Orcinus orca) in the shallow waters of the southwestern Gulf of California, particularly around Cerralvo Island, is presented. The observation was made possible
Frida Lara-Lizardi   +3 more
doaj   +1 more source

Computational fluid dynamics simulations of airflow through the nasal passages of rhinolophoid bats

open access: yesThe Anatomical Record, EarlyView.
Abstract The nasal passages of bats that emit their echolocation call through their nostrils have adapted for sound emission as well as standard respiratory and olfactory functions. Rhinolophids, hipposiderids and rhinonycterids all use a high duty cycle (HDC) echolocation strategy.
Carley Goodwin   +7 more
wiley   +1 more source

First hydro-electric plant in California, Pomona, CA, 1956

open access: yes, 1999
Photograph of First hydro-electric plant in California, Pomona ...
Automobile Club of Southern California
core  

Single‐cell RNA sequencing of peripheral blood defines two immunological subtypes of Sjögren's disease distinguished by anti‐SSA antibodies and aberrant B cell populations

open access: yesArthritis &Rheumatology, Accepted Article.
Objectives Sjögren's disease (SjD) is a heterogeneous autoimmune disorder characterized by substantial clinical and molecular diversity. This heterogeneity raises key questions regarding the existence of distinct pathogenic mechanisms underlying disease subtypes.
Geoffrey Urbanski   +15 more
wiley   +1 more source

First hydro-electric plant in California, Pomona, 1956

open access: yes, 1999
Photograph of First hydro-electric plant in California ...
Automobile Club of Southern California
core  

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