Search results for "1H"
showing 10 items of 1291 documents
Influenza della temperatura di pirolisi e del tempo di residenza sulle proprietà fisico-chimiche del biochar prodotto da pollina
2013
La pollina è tradizionalmente utilizzata in agricoltura come fertilizzante organico grazie al suo alto contenuto in nutrienti immediatamente disponibili per le piante (principalmente azoto, potassio e fosforo). Nonostante i vantaggi apportati alle colture, l’eccessivo uso della pollina come ammendante del suolo può causare gravi problemi ambientali, tra cui rischi per la salute umana e lisciviazione di nitrati o altri inquinanti nelle acquee sotterranee. Per diminuire i rischi legati al suo utilizzo, una soluzione alternativa potrebbe essere il ri-utilizzo energetico della pollina tramite la sua conversione in biochar. Il biochar è una sostanza carboniosa derivante dalla pirolisi di qualsia…
Etude par spectroscopies de RMN 23Na, 31P et 1H : effets de la teneur en sel (NaCl) dans des matrices alimentaires
2008
The reduction of salt (NaCl) content in food has become a matter of public health. However, the multiple functions of salt in food make the reduction of its content difficult. The aim of this work was to demonstrate the applicability of NMR innovative techniques in order to characterise the mobility of sodium ions (distinction between ‘free’ and ‘bound’ sodium), to bring a better understanding of the role of salt in the organisation of the food matrix (in particular phosphorous molecules in dairy systems) and to study impact of salt on the mobility of aroma compounds. In a first step, the 23Na NMR study of iota-carrageenan gels validated the quantification of total sodium (Single-Quantum, S…
NOVEL ANTAGONISTS FOR AN Hsp60-BASED ANTICANCER CHAPERONOTHERAPY
2012
The Heat shock proteins (Hsps) are nowadays considered the most important cell chaperones, which result overexpressed in response to a number of cell stress stimuli.In tumor cells, when Hsp60 accumulates in the cytosol, without mitochondrial release, it exerts an anti-apoptotic effect, by inhibiting pro-caspase-3 (pC3) activation. In this context, our study aims to elucidate the structural details of the interaction between Hsp60 and pC3 and to design novel antagonists able to specifically block this interaction. The analysis of virtual screening results highlights the 4-(3-chloro-4-fluorophenylamino)- 6-[(1H-imidazol-4-yl-methyl)-3-carbonitrile-quinolines of type 1 and the N-{5-[1H-imidazo…
Sekundāro metabolītu izdalīšana no sūkļa Smenospongia aurea
2015
Darba mērķis bija jaunu sekundāro metabolītu izolēšana no sūkļa Smenospongia aurea un to ķīmiskās struktūras noteikšana. Tomēr, uzsākot darbu, nolēmām izdalīt oriģinālus, neribosomālus hibrīdu peptīdu/poliketīdu savienojumus – smenamīdu A, smenamīdu B, smenotiazolu A un smenotiazolu B –, kas jau iepriekš izdalīti no S. aurea sūkļa un kam noteikta augsta citotoksiska aktivitāte. Interesējošos savienojumus izdalījām no lipofīla sūkļa S. aurea ekstrakta, izmantojot augsti efektīvo šķidrumu hromatogrāfijas (AEŠH) metodi, to ķīmisko struktūru noteicām ar augstas izšķirtspējas masspektrometrijas (ESI/MS), 1H kodolu magnētiskās rezonanses (KMR) un 13C KMR metodēm, un iegūtos datus salīdzinājām ar …
CCDC 764359: Experimental Crystal Structure Determination
2010
Related Article: T.Voss, Chao Chen, G.Kehr, E.Nauha, G.Erker, D.W.Stephan|2010|Chem.-Eur.J.|16|3005|doi:10.1002/chem.200903483
CCDC 1831369: Experimental Crystal Structure Determination
2018
Related Article: Katja Kärki, Juha H. Siitonen, Mona Cederström, Sami Kortet, Petri M. Pihko|2018|Synlett|29|1723|doi:10.1055/s-0037-1610109
CCDC 639296: Experimental Crystal Structure Determination
2007
Related Article: J.Becker, R.Frohlich, K.Salorinne, D.Hoppe|2007|Eur.J.Org.Chem.|2007|3337|doi:10.1002/ejoc.200700219
CCDC 2005162: Experimental Crystal Structure Determination
2021
Related Article: Argha Saha, Srimanta Guin, Wajid Ali, Trisha Bhattacharya, Sheuli Sasmal, Nupur Goswami, Gaurav Prakash, Soumya Kumar Sinha, Hediyala B. Chandrashekar, S. S. Anjana, Debabrata Maiti|2021|Cell Press: Chem|7|948|doi:10.1016/j.chempr.2021.01.003
CCDC 1053057: Experimental Crystal Structure Determination
2016
Related Article: G. Aromí, C. M. Beavers, J. Sánchez Costa, G. A. Craig, G. Mínguez Espallargas, A. Orera, O. Roubeau|2016|Chemical Science|7|2907|doi:10.1039/C5SC04287A
CCDC 1053055: Experimental Crystal Structure Determination
2016
Related Article: G. Aromí, C. M. Beavers, J. Sánchez Costa, G. A. Craig, G. Mínguez Espallargas, A. Orera, O. Roubeau|2016|Chemical Science|7|2907|doi:10.1039/C5SC04287A