Results 61 to 70 of about 99,974 (260)

Micro/Nanorobot for Drug Delivery—A Review of Material Selections

open access: yesAdvanced NanoBiomed Research, EarlyView.
This review explores material strategies for biomedical micro/nanorobots, emphasizing their roles in propulsion, navigation, drug delivery, and biodegradability. It highlights advancements in metallic, polymeric, and hybrid materials, while addressing clinical translation challenges such as toxicity, immune response, and manufacturability.
Xiaozhuo Wu, Bingyun Li, Malcolm Xing
wiley   +1 more source

Cascading reaction of arginase and urease on a graphene-based FET for ultrasensitive, real-time detection of arginine [PDF]

open access: yes, 2018
Herein, a biosensor based on a reduced graphene oxide field effect transistor (rGO-FET) functionalized with the cascading enzymes arginase and urease was developed for the detection of L-arginine.
Azzaroni, Omar   +4 more
core   +1 more source

Therapeutic Protection Against H. pylori Infection in Mongolian Gerbils by Oral Immunization With a Tetravalent Epitope-Based Vaccine With Polysaccharide Adjuvant

open access: yesFrontiers in Immunology, 2019
Urease is an effective target for design of a therapeutic epitope vaccine against Helicobacter pylori (H. pylori). In our previous studies, an epitope vaccine CTB-UE containing Th and B epitopes from H.
Le Guo   +14 more
doaj   +1 more source

The dependence of the specific activity of urease upon the apparent absolute enzyme concentration [PDF]

open access: yes, 1948
If the activity of an enzyme preparation is determined under conditions in which a further increase in substrate concentration is without demonstrable effect, all other factors being held constant, it is ordinarily assumed that the specific activity of ...
Harmon, Kent M.   +2 more
core  

Diatom Proteomics Reveals Unique Acclimation Strategies to Mitigate Fe Limitation [PDF]

open access: yes, 2015
Phytoplankton growth rates are limited by the supply of iron (Fe) in approximately one third of the open ocean, with major implications for carbon dioxide sequestration and carbon (C) biogeochemistry.
Boyd, Philip W.   +7 more
core   +1 more source

Sol-Gel Derived Adsorbents with Enzymatic and Complexonate Functions for Complex Water Remediation

open access: yesNanomaterials, 2017
Sol-gel technology is a versatile tool for preparation of complex silica-based materials with targeting functions for use as adsorbents in water purification. Most efficient removal of organic pollutants is achieved by using enzymatic reagents grafted on
Roman P. Pogorilyi   +5 more
doaj   +1 more source

Rubrolides A, D, P, T, U: Total Syntheses and Antibacterial Evaluation of Highly Brominated Marine Natural Products

open access: yesChemistryEurope, EarlyView.
Following the Danube Flow. The first total syntheses of highly brominated rubrolides T, U, and U‐analog, together with the efficient and divergent syntheses of rubrolides A, D, and P. The dibrominated key intermediate, obtained via a Suzuki‐Miyaura cross‐coupling reaction, is the centerpiece of the synthesis.
Jasmin Janneschütz   +7 more
wiley   +1 more source

The pH-static enzyme sensor : An ISFET-based enzyme sensor, insensitive to the buffer capacity of the sample [PDF]

open access: yes, 1987
An ISFET-based urea sensor is combined with a noble-metal electrode which provides continuous coulometric titration of the products of the enzymatic reaction.
Bergveld, Piet, Schoot, Bart H. van der
core   +3 more sources

Optical Enzymatic Biosensor for the Determination of Heavy Metals in the Lagoon of La Paz, Baja California Sur, Mexico

open access: yesProceedings
An optical crystalline silicon biosensor was developed for the detection of heavy metals in surface water, deep water, mollusks and sediment in the lagoon of La Paz, Baja California Sur, Mexico, to monitor the presence of heavy metals, the biosensor was ...
Daniel Santos-Ubaldo   +1 more
doaj   +1 more source

Disponibilidade de nitrato em solos brasileiros sob efeito da calagem e de fontes e doses de nitrogênio Nitrate availability in Brazilian soils under effect of liming and sources and amounts of nitrogen

open access: yesPesquisa Agropecuária Brasileira, 2000
Este trabalho objetivou avaliar os efeitos da calagem e de fontes e doses de N sobre a disponibilidade de nitrato, em amostras (020 cm) de solos brasileiros.
CARLOS ALBERTO SILVA   +1 more
doaj   +1 more source

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