Synthesis and Properties of Three Guanidinium Salts Based on High-Oxygen-Balanced 1,4-Dinitramino-3,5-Dinitropyrazolate Anion

2021 ◽  
Author(s):  
Guanglei Li ◽  
Haifeng Huang ◽  
Jun Yang ◽  
Chao Yang ◽  
Wei Li ◽  
...  
Keyword(s):  
High Oxygen ◽  
Guanidinium Salts

Synthesis and properties of three guanidinium salts based on high-oxygen-balanced 1,4-dinitramino-3,5-dinitropyrazolate anion

Polyhedron ◽  
2021 ◽  
Vol 199 ◽  
pp. 115098
Author(s):  
Guanglei Li ◽  
Haifeng Huang ◽  
Jun Yang ◽  
Chao Yan ◽  
Wei Li ◽  
...  
Keyword(s):  
High Oxygen ◽  
Guanidinium Salts

VSB Blast Furnace Operation With High Productivity Using High Oxygen Enrichment

2019 ◽  
Author(s):  
P. Storti ◽  
G. Cândido ◽  
C. Machado ◽  
M. Musso ◽  
D. Almeida ◽  
...  
Keyword(s):  
Blast Furnace ◽  
Oxygen Enrichment ◽  
Furnace Operation ◽  
High Oxygen ◽  
Blast Furnace Operation ◽  
High Productivity

High Oxygen Packaging System Negatively Affects Color Stability and Sensory Attributes of Beef Cuts

2010 ◽  
Author(s):  
Yuan Kim ◽  
Steven M. Lonergan ◽  
Elisabeth J. Huff-Lonergan
Keyword(s):  
Color Stability ◽  
Sensory Attributes ◽  
High Oxygen ◽  
Packaging System

scholarly journals Structure-Function Relationships in Hemoglobin Kariya, Lys-40(C5)α → Glu, with High Oxygen Affinity

1989 ◽  
Vol 264 (19) ◽  
pp. 11174-11180
Author(s):  
K Imai ◽  
A Tsuneshige ◽  
T Harano ◽  
K Harano
Keyword(s):  
Structure Function ◽  
Oxygen Affinity ◽  
High Oxygen ◽  
High Oxygen Affinity

scholarly journals Early oxygen levels contribute to brain injury in extremely preterm infants

2021 ◽  
Author(s):  
Krista Rantakari ◽  
Olli-Pekka Rinta-Koski ◽  
Marjo Metsäranta ◽  
Jaakko Hollmén ◽  
Simo Särkkä ◽  
...  
Keyword(s):  
Preterm Infants ◽  
Brain Structures ◽  
High Oxygen ◽  
List Type ◽  
Neurodevelopmental Outcomes ◽  
Oxygen Levels ◽  
Arterial Blood ◽  
Extremely Preterm ◽  
Extremely Preterm Infants

Abstract Background Extremely low gestational age newborns (ELGANs) are at risk of neurodevelopmental impairments that may originate in early NICU care. We hypothesized that early oxygen saturations (SpO2), arterial pO2 levels, and supplemental oxygen (FiO2) would associate with later neuroanatomic changes. Methods SpO2, arterial blood gases, and FiO2 from 73 ELGANs (GA 26.4 ± 1.2; BW 867 ± 179 g) during the first 3 postnatal days were correlated with later white matter injury (WM, MRI, n = 69), secondary cortical somatosensory processing in magnetoencephalography (MEG-SII, n = 39), Hempel neurological examination (n = 66), and developmental quotients of Griffiths Mental Developmental Scales (GMDS, n = 58). Results The ELGANs with later WM abnormalities exhibited lower SpO2 and pO2 levels, and higher FiO2 need during the first 3 days than those with normal WM. They also had higher pCO2 values. The infants with abnormal MEG-SII showed opposite findings, i.e., displayed higher SpO2 and pO2 levels and lower FiO2 need, than those with better outcomes. Severe WM changes and abnormal MEG-SII were correlated with adverse neurodevelopment. Conclusions Low oxygen levels and high FiO2 need during the NICU care associate with WM abnormalities, whereas higher oxygen levels correlate with abnormal MEG-SII. The results may indicate certain brain structures being more vulnerable to hypoxia and others to hyperoxia, thus emphasizing the role of strict saturation targets. Impact This study indicates that both abnormally low and high oxygen levels during early NICU care are harmful for later neurodevelopmental outcomes in preterm neonates. Specific brain structures seem to be vulnerable to low and others to high oxygen levels. The findings may have clinical implications as oxygen is one of the most common therapies given in NICUs. The results emphasize the role of strict saturation targets during the early postnatal period in preterm infants.

Orthoamide und Iminiumsalze, IC. Synthese und Reaktionen von N,N,N′,N′,N′′-Pentaalkyl-N′′-[2-(N,N,N′,N′,N′′-pentaalkylguanidinio)ethyl]-guanidiniumsalzen

2020 ◽  
Vol 75 (6-7) ◽  
pp. 685-695
Author(s):  
Willi Kantlehner ◽  
Ioannis Tiritiris ◽  
Wolfgang Frey ◽  
Ralf Kreß
Keyword(s):  
Crystal Structure ◽  
Guanidinium Salt ◽  
Guanidinium Salts

AbstractBis[bis(dibutylamino)methylen]hydrazine 8 is prepared from N,N,N′,N′-tetrabutylchloroformamidinium chloride (4c) and hydrazine. Bromine transforms 8 to the heterocyclic guanidinium salt 15a which is isolated as tetraphenylborate. From N,N,N′,N′-tetraalkylchloroformamidiniumchlorides and ethylendiamine the diguanidines are prepared which are alkylated to give diguanidinium salts, From these salts guanidinium salts can be prepared by anion metathesis with tetraphenylborate-, iodide-, hexafluorphosphate-, trifluoromethansulfonat-, bis(trifluormethansulfonyl)imide and tricyanmethanide as counteranions. The structure of the compounds 15 and 17b is confirmed by crystal structure analyses.

Hemoglobin fort gordon or α2β2145 Tyr → Asp, a new high-oxygen-affinity hemoglobin variant

1975 ◽  
Vol 400 (2) ◽  
pp. 343-347 ◽  
Author(s):  
H.B. Kleckner ◽  
J.B. Wilson ◽  
J.G. Lindeman ◽  
P.D. Stevens ◽  
G. Niazi ◽  
...  
Keyword(s):  
Oxygen Affinity ◽  
High Oxygen ◽  
Hemoglobin Variant ◽  
High Oxygen Affinity
Sign in / Sign up

Export Citation Format

Share Document