Search Results - "Drăghici, Constantin"

1,3-Dipolar cycloaddition between acetylenic dipolarophiles and sydnone-N-ylides as bis(1,3-dipoles) by Albota, Florin, Drăghici, Constantin, Caira, Mino R., Dumitrascu, Florea

“…1,3-Dipolar cycloaddition reaction of sydnone-N-ylides, as model bis(1,3-dipoles), with acetylenic dipolarophiles in 1,2-epoxybutane under reflux gave…”
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Dynamics of Forest Fragmentation and Connectivity Using Particle and Fractal Analysis by Andronache, Ion, Marin, Marian, Fischer, Rico, Ahammer, Helmut, Radulovic, Marko, Ciobotaru, Ana-Maria, Jelinek, Herbert F., Di Ieva, Antonio, Pintilii, Radu-Daniel, Drăghici, Cristian-Constantin, Herman, Grigore Vasile, Nicula, Alexandru-Sabin, Simion, Adrian-Gabriel, Loghin, Ioan-Vlad, Diaconu, Daniel-Constantin, Peptenatu, Daniel

“…The ever decreasing area of forests has lead to environmental and economical challenges and has brought with it a renewed interest in developing methodologies…”
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A new fractal index to classify forest fragmentation and disorder by Peptenatu, Daniel, Andronache, Ion, Ahammer, Helmut, Radulovic, Marko, Costanza, Jennifer K., Jelinek, Herbert F., Di Ieva, Antonio, Koyama, Kohei, Grecu, Alexandra, Gruia, Andreea Karina, Simion, Adrian-Gabriel, Nedelcu, Iulia Daniela, Olteanu, Cosmin, Drăghici, Cristian-Constantin, Marin, Marian, Diaconu, Daniel Constantin, Fensholt, Rasmus, Newman, Erica A.

“…Context Forest loss and fragmentation pose extreme threats to biodiversity. Their efficient characterization from remotely sensed data therefore has strong…”
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β-Ketophosphonates with Pentalenofuran Scaffolds Linked to the Ketone Group for the Synthesis of Prostaglandin Analogs by Tănase, Constantin I, Drăghici, Constantin, Căproiu, Miron Teodor, Hanganu, Anamaria, Borodi, Gheorghe, Maganu, Maria, Gal, Emese, Pintilie, Lucia

“…β-Ketophosphonates with pentalenofurane fragments linked to the keto group were synthesized. The bulky pentalenofurane skeleton is expected to introduce more…”
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Assessment of Textural Differentiations in Forest Resources in Romania Using Fractal Analysis by Ion Andronache, Rasmus Fensholt, Helmut Ahammer, Ana-Maria Ciobotaru, Radu-Daniel Pintilii, Daniel Peptenatu, Cristian-Constantin Drăghici, Daniel Constantin Diaconu, Marko Radulović, Giuseppe Pulighe, Akomian Fortuné Azihou, Mireille Scholastique Toyi, Brice Sinsin

“…Deforestation and forest degradation have several negative effects on the environment including a loss of species habitats, disturbance of the water cycle and…”
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New HSV-1 Anti-Viral 1'-Homocarbocyclic Nucleoside Analogs with an Optically Active Substituted Bicyclo[2.2.1]Heptane Fragment as a Glycoside Moiety by Tănase, Constantin I, Drăghici, Constantin, Hanganu, Anamaria, Pintilie, Lucia, Maganu, Maria, Volobueva, Alexandrina, Sinegubova, Ekaterina, Zarubaev, Vladimir V, Neyts, Johan, Jochmans, Dirk, Slita, Alexander V

“…New 1'-homocarbanucleoside analogs with an optically active substituted bicyclo[2.2.1]heptane skeleton as sugar moiety were synthesized. The pyrimidine analogs…”
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Synthesis, Crystal Structure and Photoluminescent Properties of Novel 9-Cyano-Pyrrolo[1,2-a][1,10]Phenanthrolines by Cristea, Mihaela, Răducă, Mihai, Shova, Sergiu, Drăghici, Constantin, Neacșu, Vlad A., Maganu, Maria, Albotă (Barbu), Loredana, Dumitrescu, Denisa, Dumitrascu, Florea

“…Novel 9-cyano-pyrrolo[1,2-a][1,10]phenanthrolines 6a–d were obtained by an efficient one-pot regioselective reaction between 1,10-phenanthrolinium bromides…”
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1-Vinylazulenes with Oxazolonic Ring-Potential Ligands for Metal Ion Detectors; Synthesis and Products Properties by Cristea, Mihaela, Bîrzan, Liviu, Dumitrascu, Florea, Enache, Cristian, Tecuceanu, Victorita, Hanganu, Anamaria, Drăghici, Constantin, Deleanu, Călin, Nicolescu, Alina, Maganu, Maria, Razus, Alexandru C.

“…As a continuation of research on 1-vinylazulenes synthesis, on their physico–chemical properties as well as on their use as colorimetric and electrochemical…”
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Hydroboration-Oxidation of (±)-(1α,3α,3aβ,6aβ)-1,2,3,3a,4,6a-Hexahydro-1,3-pentalenedimethanol and Its O-Protected Derivatives: Synthesis of New Compounds Useful for Obtaining (iso)Carbacyclin Analogues and X-ray Analysis of the Products by Tănase, Constantin I, Cocu, Florea G, Căproiu, Miron Teodor, Drăghici, Constantin, Shova, Sergiu

“…Hydroboration-oxidation of 2α,4α-dimethanol-1β,5β-bicyclo[3.3.0]oct-6-en dibenzoate ( ) gave alcohols (symmetric) and (unsymmetric) in ~60% yield, together…”
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Using Fractal Analysis in Modeling the Dynamics of Forest Areas and Economic Impact Assessment: Maramureș County, Romania, as a Case Study by Radu-Daniel Pintilii, Ion Andronache, Daniel Constantin Diaconu, Răzvan Cătălin Dobrea, Martina Zeleňáková, Rasmus Fensholt, Daniel Peptenatu, Cristian-Constantin Drăghici, Ana-Maria Ciobotaru

“…This study uses fractal analysis to quantify the spatial changes of forest resources caused by an increase of deforested areas. The method introduced…”
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Prediction of the residual stress after quenching of 6061 aluminium alloy plates by using mathematical modelling by Petre, Marin, Dinu, Cristian, Drăghici, Nicuşor Constantin, Andrei, Valeriu

“…The purpose of this article is to better understand the behavior of the residual stresses in aluminium alloy plates by using mathematical modelling. Quenching…”
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Synthesis, characterization and biological activity of new Ni(II), Pd(II) and Cr(III) complex compounds with chlorhexidine by Mihalache, Mădălina, Negreanu-Pirjol, Ticuţa, Florea Dumitraşcu, Drăghici, Constantin, Călinescu, Mirela

“…Six new coordination compounds of Ni(II), Pd(II) and Cr(III) with chlorhexidine, 1,1?-hexamethylenebis[5-(4-chlorophenyl)biguanide], were prepared,…”
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Thermogelation properties of poly(N-isopropylacrylamide) – block – poly(ethylene glycol) – block – poly(N-isopropylacrylamide) triblock copolymer aqueous solutions by Teodorescu, Mircea, Negru, Ioana, Stanescu, Paul O., Drăghici, Constantin, Lungu, Anamaria, Sârbu, Andrei

“…Low polydispersity PNIPAM–PEG–PNIPAM triblock copolymers with PEG blocks of 1–6 kDa and PNIPAM chains of 5–30 kDa were synthesized and their thermogelation…”
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Recent Deforestation Pattern Changes (2000–2017) in the Central Carpathians: A Gray-Level Co-Occurrence Matrix and Fractal Analysis Approach by Ana-Maria Ciobotaru, Ion Andronache, Helmut Ahammer, Herbert F. Jelinek, Marko Radulovic, Radu-Daniel Pintilii, Daniel Peptenatu, Cristian-Constantin Drăghici, Adrian-Gabriel Simion, Răzvan-Mihail Papuc, Marian Marin, Roxana-Andreea Radu, Alexandra Grecu, Andreea Karina Gruia, Ioan-Vlad Loghin, Rasmus Fensholt

“…The paper explores the distribution of tree cover and deforested areas in the Central Carpathians in the central-east part of Romania, in the context of the…”
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Mathematical modelling of the quenching process of 6061 aluminium alloy plates by Petre, Marin, Efrem, Raluca, Drăghici, Nicuşor Constantin, Achim, Alexandra Valerica

“…In recent decades, due to the increase in computing power, mathematical modelling has experienced a fulminant development in almost all areas. The aluminium…”
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IN SILICO AND EXPERIMENTAL STUDIES FOR THE DEVELOPMENT OF NOVEL OXAZOL-5(4H)-ONES WITH PHARMACOLOGICAL POTENTIAL by ROȘCA, ELENA VALENTINA

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Determining forest fund evolution by fractal analysis (SUCEAVA-ROMANIA) by Pintilii, Radu Daniel, Andronache, Ion, Simion, Adrian Gabriel, Drăghici, Cristian-Constantin, Peptenatu, Daniel, Ciobotaru, Ana-Maria, Dobrea, Răzvan Cătălin, Papuc, Razvan-Mihail

“…The main objective of this study is developing an analysis methodology for the forest fund dynamic. One of the most severe current issues which Romania faces…”
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New fluorescent indolizines and bisindolizinylethylenes by Dumitraşcu, Florea, Vasilescu, Marilena, Drăghici, Constantin, Căproiu, Miron Teodor, Barbu, Loredana, Dumitrescu, Dan G.

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New β-ketophosphonates for the synthesis of prostaglandin analogues. 1. Phosphonates with a bicyclo[3.3.0]octene scaffold spaced by a methylene group from the β-ketone by Tănase, Comstantin, Căproiu, Miron Teodor, Drăghici, Constantin

“…The synthesis of β-ketophosphonates, linked by a methylene group to a bicyclo[3.3.0]octene fragment, was performed by the reaction of dimethyl…”
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New potential antitumor pyrazole derivatives: synthesis and cytotoxic evaluation by Nitulescu, George Mihai, Draghici, Constantin, Olaru, Octavian Tudorel

“…New pyrazole derivatives were designed and synthesized as potential protein kinase inhibitors in the view to develop specific antitumor therapies. The…”
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