Results 11 to 20 of about 42,593 (264)

Large Igneous Province Record Through Time and Implications for Secular Environmental Changes and Geological Time‐Scale Boundaries

open access: yesGeophysical Monograph Series, Page 1-26., 2021

Exploring the links between Large Igneous Provinces and dramatic environmental impact

An emerging consensus suggests that Large Igneous Provinces (LIPs) and Silicic LIPs (SLIPs) are a significant driver of dramatic global environmental and biological changes, including mass extinctions.
Richard E. Ernst   +8 more
wiley  

+19 more sources

Palaeomagnetism and magnetostratigraphy of the Permian and Triassic of Spitsbergen : a review of progress and challenges. [PDF]

open access: yes, 2008
Permian and Triassic sediments from Svalbard provide a testing ground for evaluating concepts about the polarity and configuration of the geomagnetic field during the Palaeozoic–Mesozoic transition.
Hounslow, Mark W., Nawrocki, Jerzy
core   +5 more sources

Cytokine profiles and species presence in pre-menopausal subjects with genital or colonization

open access: yesWomen's Health, 2021
Background and Purpose: Lactobacilli play a vital role in protecting the vagina against pathogens. Cytokines are vital components of defense against infections in women.
John Garza   +4 more
doaj   +1 more source

A post-operative reaction to povidone‑iodine in a postpartum woman: A case report

open access: yesCase Reports in Women's Health, 2022
Introduction: High infection rates after cesarean section are a major concern in the United States. A majority of antiseptics have irritant properties if they are not used as specified in companies' guidelines.
Sanjana Rao   +4 more
doaj   +1 more source

Carbon dioxide (CO2) laser ablation treatment of a peri-urethral genital wart: A case report

open access: yesCase Reports in Women's Health, 2020
Background: Visible genital warts are caused by the nearly 100 recognized strains of human papillomavirus (HPV). HPV infections caused by high-risk strains are associated with significant morbidity and mortality rates.
Paula Gutierrez   +5 more
doaj   +1 more source

Evaluating the Synthesis Model of tutoring across the educational spectrum

open access: yesStellenbosch Papers in Linguistics Plus, 2019
The goal of this study is to verify a grounded theory model of tutoring developed by Babcock, Manning and Rogers (2012) using qualitative research literature as data.
Babcock, Rebecca Day   +3 more
doaj   +1 more source

Ostracods (Crustacea) associated with microbialites across the Permian-Triassic boundary in Dajiang (Guizhou Province, South China) [PDF]

open access: yes, 2012
26 samples were processed for a taxonomic study of ostracods from the Upper Permian (Changhsingian) - Lower Triassic (Griesbachian) interval of the Dajiang section, Guizhou Province, South China. 112 species belonging to 27 genera are recognized.
Marie-Beatrice FOREL   +2 more
core   +1 more source

Optimizing initial oil production of horizontal Wolfcamp wells utilizing data analytics

open access: yesJournal of Petroleum Exploration and Production Technology, 2020
Machine learning techniques have fundamentally altered how oil and gas industry practitioners design fracture operations. In this paper, we perform data analytics utilizing response surface methodology (RSM), a group of statistical techniques that ...
A. Alzahabi   +3 more
doaj   +1 more source

Transformation of struvite from wastewater to a hydrogen fuel storage compound ammonia borane

open access: yesFrontiers in Chemistry, 2023
Ammonia borane (NH3BH3) is a carrier of hydrogen gas that is known as a carbon-free renewable energy source. A high hydrogen content of ammonia borane and its stability in air at ambient temperatures make it a valuable molecule for its potential use as a
Nin Dingra   +4 more
doaj   +1 more source

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