Results 31 to 40 of about 179,087 (303)

Functionalisation of Ti6Al4V and hydroxyapatite surfaces with combined peptides based on KKLPDA and EEEEEEEE peptides [PDF]

open access: yes, 2017
Surface modifications are usually performed on titanium alloys to improve osteo-integration and surface bioactivity. Modifications such as alkaline and acid etching, or coating with bioactive materials such as hydroxyapatite, have previously been ...
Ben-Nissan, Besim   +4 more
core   +6 more sources

Two techniques of age estimation in cetaceans: GLGs in teeth and earplugs, and measuring the AAR rate in eye lens nucleus

open access: yesNAMMCO Scientific Publications, 2017
The ages of three species of cetaceans were estimated by counting the growth layer groups (GLG) and measuring the aspartic acid racemization rate (kAsp) by what is referred to as the Aspartic Acid Racemization (AAR) technique.
Nynne H Nielsen   +4 more
doaj   +1 more source

Testicular endocrine activity is upregulated by D-Aspartic acid in the green frog Rana esculenta [PDF]

open access: yes, 2004
This study investigated the involvement of D-aspartic acid (D-Asp) in testicular steroidogenesis of the green frog Rana esculenta and its effect on stimulation of thumb pad morphology and glandular activity, a typical testosterone-dependent secondary ...
ASSISI, LOREDANA   +5 more
core   +1 more source

Enantioselective Synthesis of Homosphingosine Derivatives from l-Aspartic Acid [PDF]

open access: yesSynthesis, 2009
The sterically demanding 9-phenylfluorenyl N-protection of a number of amino acids allows the formation of amino acid derived β-ketophosphonate reagents and their Horner-Wadsworth-Emmons olefination. In an attempt to develop a synthesis of D-erythro-homosphingosine in enantiopure form, we have shown that the reactivity of the intermediates is ...
Sauerland, Sami J.K.   +4 more
openaire   +2 more sources

Biostimulants induce positive changes in the radish morpho-physiology and yield

open access: yesFrontiers in Plant Science, 2022
An ever-increasing population has issued an open challenge to the agricultural sector to provide enough food in a sustainable manner. The upsurge in chemical fertilizers to enhance food production had resulted in environmental problems.
Qurat-Ul-Ain Raza   +8 more
doaj   +1 more source

A Novel Inhibitor of β-Glucuronidase: l-Aspartic Acid [PDF]

open access: yesPediatric Research, 2001
Infants who consume casein hydrolysate formula have been shown to have lower neonatal jaundice levels than infants who consume routine formula or breast milk. Because casein hydrolysate has been shown to contain a beta-glucuronidase inhibitor, one possible mechanism to explain this finding is blockage of the enterohepatic circulation of bilirubin by a ...
B L, Kreamer, F L, Siegel, G R, Gourley
openaire   +2 more sources

Ostracode-based aminostratigraphy and aminochronology of a tufa system in central Spain [PDF]

open access: yes, 2005
In the Priego area, central Spain, extensive tufa deposits are located in three small tributaries located at the head of the 1000 kmlong Tagus River. The deposits are originated after karst-origin running waters emerged from the confines of the canyons ...
Andrews   +46 more
core   +2 more sources

Change of Indices of the Amino Acid Composition of Rats' Hearts at Artificial Hypobiosis [PDF]

open access: yes, 2019
A series of unsolved questions in such sciences as: medicine, veterinary, biology still exist in the modern world. One of them is a search for new promising ways of anaesthetization, at which it would be unnecessary to use apparatuses as an “artificial ...
Umanska, A. (Anna)
core   +3 more sources

Changes of Metabolites and Related Flavors in Mandarin Fish (Siniperca chuatsi) during 24 h of Refrigeration [PDF]

open access: yesShipin Kexue
The study aimed to investigate the changes of metabolites and related flavors in the muscle of fresh mandarin fish (Siniperca chuatsi) during 24 h of postmortem refrigeration at 4 ℃ by ultra performance liquid chromatography coupled with high resolution ...
ZHOU Beibei, WU Minglin, JIANG Yangyang, SUN Yongxu, LI Haiyang, CUI Kai
doaj   +1 more source

pH‐mediated activation of the lysosomal arginine sensor SLC38A9

open access: yesFEBS Letters, EarlyView.
Cells monitor nutrient levels via the lysosomal transporter SLC38A9 to activate the mechanistic target of rapamycin complex 1 (mTORC1). This study reveals that SLC38A9 function is regulated by pH. We identified histidine 544 as a critical pH sensor that undergoes conformational changes to control amino acid efflux from lysosomes; therefore, it ...
Xuelang Mu, Ampon Sae Her, Tamir Gonen
wiley   +1 more source

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