Results 41 to 50 of about 5,038 (139)

Distribution and Alkaline phosphatatase activity of filamentous conjugales in an upper Teesdale stream [PDF]

open access: yes, 1992
Two small streams in Upper Teesdale National Nature Reserve were examined with respect to water chemistry and filamentous Conjugales present. Phosphate, nitrate and ammonia concentrations in the water were determined, to investigate a possible link ...
Casey, Catherine
core  

The Food Contaminants Chloropropanols and Chloropropanol Esters: A Review

open access: yesJournal of Food Biochemistry, Volume 2025, Issue 1, 2025.
Chloropropanols and chloropropanol esters are major food pollutants. Free chloropropanols are found in foods such as soy sauce, infant formula, edible vegetable oils, bread and margarine, whereas chloropropanol esters are found primarily in processed oils and fats.
Jinghui Fan   +4 more
wiley   +1 more source

Land use and biodiversity effects on P-transformation in soil [PDF]

open access: yes, 2018
Phosphorus (P) is next to nitrogen (N) an essential nutrient for all living organisms. In contrast to N from volatile species are known, P cannot be replenished from the atmosphere.
Sorkau, Elisabeth
core   +1 more source

The Chemistry of Levulinic Acid: Its Potential in the Production of Biomass‐Based Chemicals

open access: yesAdvanced Synthesis &Catalysis, Volume 366, Issue 23, Page 4846-4888, December 3, 2024.
Abstract Biomass has been identified as the ultimate sustainable resource for all carbon‐based consumer products of the chemical industries in the future. Its catalytic conversion leads to the formation of various platform chemicals that could partially or even fully replace the fossil‐based building blocks that have been currently used in synthetic ...
Csaba Árvai   +3 more
wiley   +1 more source

The genome‐wide response of Dermatophagoides pteronyssinus to cystatin A, a peptidase inhibitor from human skin, sheds light on its digestive physiology and allergenicity

open access: yesInsect Molecular Biology, Volume 33, Issue 6, Page 662-677, December 2024.
The genome of Dermatophagoides pteronyssinus was screened for genes encoding peptidases (n = 320), glycosylases (n = 77), lipases and esterases (n = 320), peptidase inhibitors (n = 65) and allergen‐related proteins (n = 52). Ingestion of cystatin A caused the regulation of cysteine endopeptidases and glycosylases, genes acquired by horizontal gene ...
José Cristian Vidal‐Quist   +3 more
wiley   +1 more source

Phylogenetic distribution, biogeography and the effects of land management upon bacterial non-specific Acid phosphatase Gene diversity and abundance [PDF]

open access: yes, 2018
Background and aims :Bacterial Non-Specific Acid Phosphatase (NSAP) enzymes are capable of dephosphorylating diverse organic phosphoesters but are rarely studied: their distribution in natural and managed environments is poorly understood.
Akkari, E.   +5 more
core   +1 more source

Effects of guanidino acetic acid and betaine supplementation on growth, dietary nutrient digestion and intestinal creatine metabolism in sheep

open access: yesVeterinary Medicine and Science, Volume 10, Issue 4, July 2024.
Dietary supplementation of rumen‐protected betaine on top of guanidino acetic acid in sheep diets can improve the apparent digestibility of ether extract, phosphorus and creatine levels in small intestinal mucosal tissues. Additionally, supplemental feeding of rumen‐protected betaine and guanidino acetic acid may promote growth and development of sheep
Chen Ma   +9 more
wiley   +1 more source

Water chemistry and algal phosphatase activity in zinc-contaminated streams [PDF]

open access: yes, 1990
A study was carried out on algal phosphatase activity and water chemistry in zinc-contaminated streams in the Northern Pennine Orefield. Fourteen field sites were studied; They ranged from low contaminated to high-zinc sites (0.1 mg 1(^-1) to 19.4 mg 1(^-
Bellos, D.
core  

The evaluation of the activity of glucose-6-phosphate dehydrogenase and 6-phosphogluconate dehydrogenase under different patho-physiological conditions : a combined enzyme histochemical and biochemical approach [PDF]

open access: yes, 1988
This thesis is based on a series of metabolic studies conducted on material obtained from human and experimental animal tissues and cells. The studies are essentially enzyme histochemical complemented when thought necessary with biochemical ...
Elias, E.A. (Ezzat), Heul, R.O. van der
core  

COMPARATIVE APPROACHES FOR PLANT GENOMES: UNRAVELING "INTRA" AND "INTER" SPECIES RELATIONSHIPS FROM PRELIMINARY GENE ANNOTATIONS [PDF]

open access: yes, 2016
Comparative genomics studies the differences and similarities between different species, to transfer biological information from model organisms to newly sequenced genomes, and to understand the evolutionary forces that drive changes in genomic features ...
Ambrosino, Luca
core  

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