Results 111 to 120 of about 6,229 (253)

Maternal preconception circulating blood biomarker mixtures, child behavioural symptom scores and the potential mediating role of neonatal brain microstructure: the S-PRESTO cohort

open access: yesTranslational Psychiatry, 2023
Human brain development starts in the embryonic period. Maternal preconception nutrition and nutrient availability to the embryo may influence brain development at this critical period following conception and early cellular differentiation, thereby ...
Jian Huang   +14 more
doaj   +1 more source

Acid zeta function and ajoint acid zeta function [PDF]

open access: yesarXiv, 2010
In this paper we set up the theory of acid zeta function and ajoint acid zeta function, based on the theory, we point out a reason to doubt the truth of the Riemann hypothesis and also as a consequence, we give out some new RH equivalences.
arxiv  

One-carbon metabolites, B vitamins and associations with systemic inflammation and angiogenesis biomarkers among colorectal cancer patients:results from the ColoCare Study [PDF]

open access: yes, 2020
B-vitamins involved in one-carbon metabolism have been implicated in the development of inflammation- A nd angiogenesis-related chronic diseases, such as colorectal cancer.
Boehm, Juergen   +26 more
core   +1 more source

Dysbiosis of intestinal microbiota and metabolism caused by acute patulin exposure in mice

open access: yesFood Frontiers, Volume 5, Issue 4, Page 1819-1832, July 2024.
This study evaluated the effects of acute exposure to different doses of patulin on gut microbiota and metabolism. Key bacteria and metabolites affected by PAT in the small intestinal and colonic contents were identified. This helps us to understand the enterotoxicity mechanism of PAT.
Ting Zhang   +9 more
wiley   +1 more source

Is Amino-Acid Homochirality Due To Asymmetric Photolysis In Space? [PDF]

open access: yesarXiv, 1999
Amino acids occurring in proteins are, with rare exceptions, exclusively of the L-configuration. Among the many scenarios put forward to explain the origin of this chiral homogeneity (i.e., homochirality), one involves the asymmetric photolysis of amino acids present in space, triggered by circularly polarized UV radiation.
arxiv  

Catalytic Activities of Pyridoxal Analogues. I. The Catalytic Effects of Pyridoxal, Pyridoxal Methochloride, and Pyridoxal N-Oxide on the Racemization of l-Glutamic Acid [PDF]

open access: yesBulletin of the Chemical Society of Japan, 1975
Abstract An improved method for the syntheses of pyridoxal methochloride (1) and pyridoxal N-oxide (5) was investigated. Further, the catalytic activities of pyridoxal, 1, and 5 on the racemization of l-glutamic acid in the presence of cupric ions were studied.
Makoto Ando, Sakae Emoto
openaire   +2 more sources

Low vitamin B12 blood levels in sickle cell disease: Data from a large cohort study in Tanzania

open access: yesBritish Journal of Haematology, Volume 204, Issue 3, Page 1047-1053, March 2024.
Sickle cell disease (SCD) is an inherited haemoglobinopathy that impairs the longevity of red blood cells and leads to chronic haemolytic anaemia. Consequently, there is a compensatory increase in the rate of erythropoiesis that increases the demand for essential micronutrients. In our cohort of SCD patients, we measured various micronutrients required
Eka Patricia Kisali   +4 more
wiley   +1 more source

Are Strong Bronsted Acids Necessarily Strong Lewis Acids? [PDF]

open access: yesarXiv, 2006
The Broensted and Lowry acid base theory is based on the capacity of proton donation or acceptance (in the presence or absence of a solvent) whereas the Lewis acid base theory is based on the propensity of electron pair acceptance or donation. We explore through DFT calculation the obvious question whether these two theories are in conformity with each
arxiv  

Antimicrobial peptides act on the rumen microbiome and metabolome affecting the performance of castrated bulls

open access: yesJournal of Animal Science and Biotechnology, 2023
Background Many countries have already banned the use of antibiotics in animal husbandry, making it extremely difficult to maintain animal health in livestock breeding.
Jinping Shi   +12 more
doaj   +1 more source

The Factors of the Classification of Protein Amino Acids [PDF]

open access: yesThis paper is published in GLASNIK of Montenegrin Academy of Science and arts, 2000, 13, pp. 173-194, 2006
In this work it is shown that three pairs of the factors appear to be the key, i.e. main factors of a natural classification of protein (canonical) amino acids within the amino acid (genetic) code. First pair: the factors of the habit of an amino acid molecule (size and polarity).
arxiv  

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