Results 31 to 40 of about 99,974 (260)

Embryos extract from germinated yellow soybean (Glycine max [L.] Merrill) inhibits promastigotes form of Leishmania amazonensis [PDF]

open access: yesBrazilian Journal of Biology
We investigated the effect of extracts of the germinated seeds of yellow soybean cultivar BRS 258 (Glycine max [L.] Merrill) against Leishmania amazonensis promastigotes. The yellow soybean embryos extract (YSEE) was fractionated on a Sephacryl S-100 gel
P. M. Pedrote   +10 more
doaj   +1 more source

Pathogenic and enzyme activities of the entomopathogenic fungus Tolypocladium cylindrosporum (Ascomycota: Hypocreales) from Tierra del Fuego, Argentina [PDF]

open access: yes, 2012
Tolypocladium cylindrosporum is an entomopathogenic fungi that has been studied as a biological control agent against insects of several orders. The fungus has been isolated from the soil as well as from insects of the orders Coleoptera, Lepidoptera ...
Cabello, Marta Noemí   +5 more
core   +2 more sources

Programmable Nanoscale Motion via Molecular Patterning on DNA Origami

open access: yesAngewandte Chemie, EarlyView.
DNA origami nanorods enable precise urease placement with tunable coverage and asymmetry, revealing that propulsion depends on a balance of catalytic loading and geometry. Maximum speed occurs at ∼25% end‐coverage and declines as enzyme distribution becomes more symmetrical.
Lars Paffen   +6 more
wiley   +2 more sources

Dynamics of urease activity in brown forest low-saturated soils of adygea under tea plants during irrigation

open access: yesНовые технологии, 2019
The article presents the results of assessing the effect of fine irrigation of tea plantations in the foothills of Adygea on the urease activity of soils.
S. V. Dobezhina
doaj   +1 more source

Biomineralization in Cave Bacteria—Popcorn and Soda Straw Crystal Formations, Morphologies, and Potential Metabolic Pathways

open access: yesFrontiers in Microbiology, 2022
Caves are extreme, often oligotrophic, environments that house diverse groups of microorganisms. Many of these microbes can perform microbiologically induced carbonate precipitation (MICP) to form crystalline secondary cave deposits known as speleothems.
Keegan Koning   +8 more
doaj   +1 more source

Recent Advances in Collective Behaviors of Micro/Nanomotor Swarms

open access: yesAdvanced Materials, EarlyView.
This review describes the driving forces behind collective motion, explores the self‐organization of micro/nano swarms across zero‐dimensional (0D), one‐dimensional (1D), two‐dimensional (2D), and three‐dimensional (3D) spaces, and highlights their potential in drug delivery, environmental monitoring, and smart devices.
Siwen Sun   +4 more
wiley   +1 more source

The competitive inhibition of of the urease-catalyzed hydrolysis of urea by phosphate [PDF]

open access: yes, 1949
The urease-catalyzed hydrolysis of urea has been found to be competitively inhibited by phosphate at pH 7.0 and 25°. The Michaelis constant of the urea-urease system has been found to be approximately 0.003 M urea and the comparable constant defining the
Harmon, Kent M., Niemann, Carl
core  

Assessment of agrogenic impact on tea plantation soils by analysis of their enzymatic activity

open access: yesНовые технологии, 2019
Brown forest acidic soils of the humid subtropical zone of Russia, on which tea is mainly cultivated, are largely exposed to agrogenic effects, which reduce their bio-productivity.
L. S. Malyukova, D. V. Strukova
doaj   +1 more source

Immunoinformatics-Based Multi-Epitope Vaccine Targeting Helicobacter Pylori. [PDF]

open access: yesCancer Rep (Hoboken)
ABSTRACT Background The rising global incidence of Helicobacter pylori‐related diseases, particularly gastric cancer, underscores the urgent need for effective preventive vaccines, motivating the exploration of innovative immunoinformatic strategies to address this public health challenge.
Pasha AVK   +4 more
europepmc   +2 more sources

Autonomous Spatiotemporal Regulation of Reversible Hydrogel Actuators by Chemical Reaction Networks

open access: yesAdvanced Materials, EarlyView.
Hydrogel actuators with reversible response to thiols are developed using reversible binding of thiols to Michael acceptors. Autonomous spatiotemporal regulation of reversible movement of these hydrogels is achieved using thiol‐based chemical reaction networks containing both positive and negative feedback.
Fan Liao   +3 more
wiley   +1 more source

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