Results 41 to 50 of about 414,584 (356)

The Efficiency of Drone Propellers—A Relevant Step Towards Sustainability

open access: yesEngineering Proceedings
The static efficiency of a propeller cannot be determined in the same way as for propellers operating in the presence of freestream airflow. As various kinds of multirotor drones and small UAVs operate in hovering or nearly hovering modes, it is ...
Jaan Susi, Karl-Eerik Unt, Siim Heering
doaj   +1 more source

We would see Jesus [PDF]

open access: yes, 2007
Historical series, 10. Jn 12:20-33.
Grundahl, Allan A.
core   +1 more source

Insolvency‐related foreign judgements in Nigeria: Contextualising English legal influence and comparative analysis of the UNCITRAL regime

open access: yesInternational Insolvency Review, EarlyView.
Abstract The United Nations Commission on International Trade Law (UNCITRAL) has produced the most robust international insolvency regime applicable to countries around the world. The Model Law on Cross‐Border Insolvency (1997) is widely accepted and already very popular among African countries.
Pontian N. Okoli
wiley   +1 more source

In Vitro Safety and Efficacy Evaluation of a Juniperus communis Callus Culture Extract and Matricaria recutita Processing Waste Extract Combination as a Cosmetic Ingredient

open access: yesPlants
For skin health promotion and cosmetic applications, combinations of plant cell extracts are extensively utilized. As most natural ingredient suppliers offer crude extracts from individual plants or specific isolated compounds, the potential interactions
Anna Ramata-Stunda   +8 more
doaj   +1 more source

Marriage in the Mother City: The Anglican marriage records of Cape Town, 1865-1960

open access: yesContree, 2021
As a social institution that permeates almost all societies, marriage trends and practices are studied across the social sciences. Yet South African marriages, past and present, remain understudied, notably because of a lack of adequate source material ...
Johan Fourie, Amy Rommelspacher
doaj   +1 more source

Long‐Term Exposure to Air Pollution and Incidence of Parkinson's Disease: A Danish Nationwide Administrative Cohort Study

open access: yesMovement Disorders, EarlyView.
Abstract Background Long‐term exposure to air pollution has been linked to Parkinson's disease (PD) incidence, yet evidence is mixed, partly because of challenges with PD diagnosis and definition. We examined this association in a nationwide administrative cohort.
Thomas Cole‐Hunter   +14 more
wiley   +1 more source

Evaporative depolarization and spin transport in a unitary trapped Fermi gas

open access: yes, 2009
We consider a partially spin-polarized atomic Fermi gas in a high-aspect-ratio trap, with a flux of predominantly spin-up atoms exiting the center of the trap.
Huse, David A., Parish, Meera M.
core   +1 more source

Back to the Mission. Revisiting Slack in Nonprofits and Introducing Tappable Slack

open access: yesNonprofit Management and Leadership, EarlyView.
ABSTRACT This article contributes to and develops the previous literature on excess resources (“slack”) in nonprofit organizations through a conceptual analysis of the implications that the organizational distinctiveness of nonprofits carries for our understanding of slack in these organizations.
Marta Reuter   +2 more
wiley   +1 more source

Vertical Distribution of Pyrrolizidine Alkaloids in PA-Producing Weeds and Its Relevance for Chamomile (Matricaria recutita L.) Contamination Under Field Conditions

open access: yesHorticulturae
The expansion of organic farming in Europe increases the co-occurrence of medicinal and aromatic plant crops and pyrrolizidine alkaloid (PA)-producing weeds, raising serious contamination concerns.
Ilva Nakurte, Gundars Skudriņš
doaj   +1 more source

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