Results 101 to 110 of about 57,230 (201)

Towards a monitoring tool to quantify urease during biocementation treatment at microscale [PDF]

open access: yesE3S Web of Conferences
Biocementation consists in using urease enzyme and a solution rich in urea and in calcium to precipitate calcium carbonate (biocement). When applying this treatment in soils, the biocement minerals bond the grains improving overall soil’s hydro ...
Borges Inês   +3 more
doaj   +1 more source

SERS‐Based Nano‐ and Microsystems Toward Biomedical Applications

open access: yesSmall, EarlyView.
This review provides a current overview of nano‐ and microscale SERS‐based devices, encompassing all aspects from material design to practical applications. We highlight controlled SERS‐active architectures, including patterned substrates, nanorods, microspheres, micromotors, and microneedles, as well as combinations of these microfluidic systems.
Gohar Soufi   +14 more
wiley   +1 more source

The Main Virulence factors of Cryptococcus neoformans

open access: yesKufa Journal for Veterinary Medical Sciences
Cryptococcus neoformans, a capsule encased pathogenic yeast, causes cryptococcal meningoencephalitis in human, particularly among immunocompromised individuals.
Sara Hayder Jabbar, Ali Hadi Abbas
doaj   +1 more source

Herbivore and mesocarnivore carcasses trigger divergent short‐term changes in soil properties

open access: yesJournal of Animal Ecology, EarlyView.
Scavengers reshape nutrient cycles in soils under carrion. Compared to herbivore carcasses, smaller but longer‐lasting carnivore remains boost nutrient levels and microbial activity in dry soils. Abstract Animal corpses act as pulses of organic matter (OM) and serve a key zoogeochemical role by providing localized nutrient inputs to soils and thereby ...
Adrián Colino‐Barea   +15 more
wiley   +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  

The Paediatric BCG Vaccine Century: From Historical Success to Future Innovations

open access: yesActa Paediatrica, EarlyView.
ABSTRACT Aim The tuberculosis (TB) vaccine, Bacille‐Calmette‐Guérin (BCG), protects infants against severe forms of primary TB. Yet, it does not protect against pulmonary reactivation TB in adults. Methods A literature review was conducted between 1st January and 28th February 2025 using PubMed, Google Scholar and reports of the World Health ...
Stefan H. E. Kaufmann
wiley   +1 more source

Prebiotic aqueous reactions catalyzed by native nickel without hydrogen

open access: yesThe FEBS Journal, EarlyView.
Serpentinizing (H2‐producing) hydrothermal vents are candidate environments for metabolic origin. They generate highly reducing conditions that convert CO2 to formate and methane in abiotic reactions resembling reactions of the acetyl‐CoA pathway of CO2 fixation. They also contain natural catalysts. Native nickel (Ni0), like Fe0, Co0, and their alloys,
Carolina Garcia Garcia   +2 more
wiley   +1 more source

Duality of Biochar and Organic Manure Co-Composting on Soil Heavy Metals and Enzymes Activity

open access: yesApplied Sciences
Technological procedures for immobilizing agrochemical pollutants and activating soil enzymes that break down contaminants are still lacking due to industry’s ever-increasing number of new products to enhance agricultural production systems. Using animal
George F. Antonious
doaj   +1 more source

Enzyme activity in terrestrial soil in relation to exploration of the Martian surface Semiannual progress report, 1 Jul. - 31 Dec. 1967 [PDF]

open access: yes
Enzyme behavior in nonclassical systems, surface pH estimation in soils, and enzymatic activities in stored and geologically preserved ...
Mc Laren, A. D., Skujins, J. J.
core   +1 more source

Efficacy and Safety of Quadruple Therapy With Semisynthetic Tetracycline for Helicobacter pylori Eradication: A Meta‐Analysis

open access: yesJournal of Gastroenterology and Hepatology, EarlyView.
ABSTRACT Background High antibiotic resistance and limited tetracycline accessibility severely restrict the clinical application of classic bismuth quadruple therapy (BQT), creating an urgent demand for alternative regimens. Methods A systematic search was conducted in PubMed, Embase, Cochrane Library, and Web of Science up to June 3, 2025, for trials ...
Qi‐Qi Guo   +7 more
wiley   +1 more source

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