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Akademický článek

INFLUENCE OF THE GREASE TYPE ON THE FRICTION AND EFFICIENCY OF THE BALL SCREWS. EXPERIMENTAL DETERMINATIONS

Autor: Vasile PUIU, George C. PUIU

Publikováno v: Fiabilitate şi Durabilitate, Vol 1, Iss 9, Pp 39-42 (2012)

This work is presenting the experimental results concerning the influence of the thick grease types on the kinematical friction coefficient and efficiency of the ball screws. Ranges of variation are established for these rates, related to this type o

Externí odkaz: https://doaj.org/article/f7351389b44848c29d17fe03bf466223

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Quasi-static and dynamic in vitro mechanical response of 3D printed scaffolds with tailored pore size and architectures

Autor: Daniel Rittel, C. Puiu, Marco Domingos, Y. Rotbaum

Publikováno v: Rotbaum, Y, Puiu, C, Rittel, D & Domingos, M 2018, ' Quasi-static and dynamic in vitro mechanical response of 3D printed scaffolds with tailored pore size and architectures ', Materials Science and Engineering: C . https://doi.org/10.1016/j.msec.2018.11.019

Scaffold-based Tissue Engineering represents the most promising approach for the regeneration of load bearing skeletal tissues, in particular bone and cartilage. Scaffolds play major role in this process by providing a physical template for cells to

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d306acf7ff22841b969750c2911990ce
https://pubmed.ncbi.nlm.nih.gov/30606523

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The components and vectors of excellence

Autor: C Puiu, V Puiu

Publikováno v: IOP Conference Series: Materials Science and Engineering. 514:012043

This work aims at identifying the components of excellence (market, products / service, development) through a new contextual approach. An interdisciplinary scientific instrumentation is utilized, by placing, into the space of the vector theory in ph

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::60e200721620a07e779a689bc1aa6d33
https://doi.org/10.1088/1757-899x/514/1/012043

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Heme−Copper−Dioxygen Complexes: Toward Understanding Ligand-Environmental Effects on the Coordination Geometry, Electronic Structure, and Reactivity

Autor: Amy A. Sarjeant, Thirumanavelan Gandhi, Simona C. Puiu, Edward I. Solomon, Britt Hedman, Keith O. Hodgson, Matthew T. Kieber-Emmons, Munzarin F. Qayyum, Zakaria Halime, Eduardo E. Chufan, Biplab Mondal, Kenneth D. Karlin

Publikováno v: Inorganic Chemistry. 49:3629-3645

The nature of the ligand is an important aspect of controlling the structure and reactivity in coordination chemistry. In connection with our study of heme-copper-oxygen reactivity relevant to cytochrome c oxidase dioxygen-reduction chemistry, we com

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::06a32d698c751003280ef497078b7d84
https://doi.org/10.1021/ic9020993

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Reductive Coupling of Nitrogen Monoxide (•NO) Facilitated by Heme/Copper Complexes

Autor: Kenneth D. Karlin, Mark P. Schopfer, Amy A. Sarjeant, Simona C. Puiu, Jun Wang

Publikováno v: Inorganic Chemistry. 49:1404-1419

The interactions of nitrogen monoxide (*NO; nitric oxide) with transition metal centers continue to be of great interest, in part due to their importance in biochemical processes. Here, we describe *NO((g)) reductive coupling chemistry of possible re

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f0e7ee3ce907cb11ee2aa5cb43061d2b
https://doi.org/10.1021/ic901431r

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A peroxynitrite complex of copper: formation from a copper–nitrosyl complex, transformation to nitrite and exogenous phenol oxidative coupling or nitration

Autor: Simona C. Puiu, Diego del Rio, Subramanian Deepalatha, Kenneth D. Karlin, Monita Y. M. Pau, Amy A. Sarjeant, Biplab Mondal, Ga Young Park, Dong-Heon Lee, Edward I. Solomon

Publikováno v: JBIC Journal of Biological Inorganic Chemistry. 14:1301-1311

Reaction of nitrogen monoxide with a copper(I) complex possessing a tridentate alkylamine ligand gives a Cu(I)–(·NO) adduct, which when exposed to dioxygen generates a peroxynitrite (O=NOO−)–Cu(II) species. This undergoes thermal transformatio

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a196db158ef33918e0fd69fc93bb74d8
https://doi.org/10.1007/s00775-009-0575-8

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Generation and Characterization of [(P)M−(X)−Co(TMPA)]n+ Assemblies; P = Porphyrinate, M = FeIII and CoIII, X = O2-, OH-, O22-, and TMPA = Tris(2-pyridylmethyl)amine

Autor: Eva Rentschler, Claudio N. Verani, Ulrich Schatzschneider, Eduardo E. Chufan, Kenneth D. Karlin, Christopher D. Incarvito, Simona C. Puiu, Arnold L. Rheingold

Publikováno v: Inorganic Chemistry. 46:3017-3026

With the established chemistry of bridged [(porphyrinate)FeIII-X-CuII(ligand)]n+ [X = O2- (oxo), OH- (hydroxo), O22- (peroxo)] complexes, we investigated the effect of cobalt ion substitution for copper or copper and iron. Thus, in this report, the g

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::64f19a6d8316eebcc367eb35c0227889
https://doi.org/10.1021/ic061686k

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Optimization of separation of some polycyclic aromatic compounds by thin-layer chromatography

Autor: Virginia Coman, Simona C. Puiu, Constantin Maˇruţoiu

Publikováno v: Journal of Chromatography A. 779:321-328

A new modelling of the chromatographic separation process of some polar and nonpolar polycyclic aromatic compounds in the form of 3rd degree functions is reported. For the selection of the optimum composition of the benzene-acetone-water mobile phase

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::ad77da288af6665d4ea970385389de81
https://doi.org/10.1016/s0021-9673(97)00401-9

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Three-Coordinate β-Diketiminato Nickel Nitrosyl Complexes from Nickel(I)−Lutidine and Nickel(II)−Alkyl Precursors

Autor: Timothy H. Warren, Simona C. Puiu

Publikováno v: Organometallics. 22:3974-3976

The nickel(I) β-diketiminates [Me2NN]Ni(2,4-lutidine) and [2,4,6-Me3NN]Ni(2,4-lutidine) react with NO to form diamagnetic, three-coordinate Ni−NO complexes, and [Me2NN]Ni(NO) undergoes insertion with a nitrosobenzene to form the N-aryl-N-nitrosohy

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f0d7d6bd6d51b7dd901bd087974ba9fc
https://doi.org/10.1021/om034041q

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