[PDF] Top 20 Percepciones del alumno sobre el uso de los sistemas de mandos de respuesta en clase
Has 10000 "Percepciones del alumno sobre el uso de los sistemas de mandos de respuesta en clase" found on our website. Below are the top 20 most common "Percepciones del alumno sobre el uso de los sistemas de mandos de respuesta en clase".
5,9,10 Trihydroxy 2,2 dimethyl 12 (3 methylbut 2 enyl) 2H,6H pyrano[3,2 b]xanthen 6 one methanol solvate
... planar xanthone nucleus fused to a chromene ring which adopts a sofa conformation. The 3-methylbut-2-enyl substi- tuent is axially attached to the xanthone ring system, with a (+)-anticlinal conformation. ... See full document
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12 (1,1 Dimethyl 2 propenyl) 5,9,10 trihydroxy 2,2 dimethyl 2H,6H pyrano[3,2 b]xanthen 6 one
... dimethyl-12-(3-methylbut-2-enyl)-2H,6H-pyrano[3,2-b]xanthen-6-one methanol solvate (Chantrapromma, Boonnak et ... See full document
38
1,6,7 Trihydroxy 3 methoxy 2,8 bis(3 methyl 2 butenyl) 9H xanthen 9 one chloroform solvate
... enyl)-2H,6H-pyrano[3,2-b]xanthen-6-one methanol solvate (Chantrapromma et al., 2005) and 3-(3,7-dimethylocta- ... See full document
24
1 [3 (Morpholin 4 yl)propyl] 3 [(naphthalen 2 yl)oxy] 4 (3 nitrophenyl)azetidin 2 one
... In the title compound (I, Fig. 1), the β-lactam ring (N1/C1–C3) is nearly planar, with the maximum deviations of -0.011 (2) Å for N1 and 0.011 (3) Å for C1 from the mean plane. The β-lactam ring makes ... See full document
249
3 Methoxy 2 [2 ({[6 (trifluoromethyl)pyridin 2 yl]oxy}methyl)phenyl]prop 2 enoic acid
... the crystal, pairs of O—H O hydrogen bonds link molecules into dimers that are further connected by C—H O and C— H F interactions into (001) layers. In addition, – stacking interactions are observed within a layer ... See full document
31
1 Methyl spiro[2 3′]oxindole spiro[3 2′′]5′′,6′′ dihydroimidazo[2′′,1′′ b]thiazol 3′′ one 4 (2 benzo[1,3]dioxol 5 yl)pyrrolidine
... was over, the solvent was removed in vacuo and the residue was separated by column chromatography (silica gel, petroleum ether/ ethyl acetate 2:1) to give the title compound (I). m.p. 543±544 K; IR (KBr): 3352.0 ... See full document
15
Bis[3 (2H benzotriazol 2 yl) 2 (prop 2 ynyloxy) 5 (2,4,4 trimethylpentan 2 yl)phenyl]methane
... 6,6′-Methylenebis(2-(2H-benzo[d][1,2,3]triazol-2-yl)-4-(2,4,4-trimethylpentan-2-yl)phenol) (0.01 g) and potassium carbonate (0.05 g) were dissolved in acetone (20 ml) at 323 K. ... See full document
98
2′,2′ Dibenzylideneisophthalohydrazide methanol solvate
... observed in many hydrazone compounds. The N1—C7 and N4—C16 bond lengths are close to the value of 1.280 (5) A ˚ found for the imine bond length in p-dimethylenedioxy- benzaldehyde 2,4-dinitrobenzoylhydrazone (Wang ... See full document
5
3 Méthyl 1 (pyridin 2 yl) 4 (1 pyridin 2 yl 3 méthyl 1H pyrazol 5 yl) 2H 3 pyrazolin 5(1H) one
... Les distances et angles trouvés dans cette molécule correspondent bien à la forme tautomère NH du fragment pyrazolinone (Kumar et al., 1995). Les distances C5—O6 = 1.242 (2) Å e t C5—N1 = 1.397 (2) Å sont ... See full document
140
Antimicrobial Activity of the Extract From the Twigs of Dorstenia Elliptica (Moraceae)
... The antimicrobial diffusion test was carried out as described by Berghe and Vlietinck (6) using a cell suspension of about 1.5 10 6 CFU/ml obtained from a McFarland turbidity standard N° 0.5. The ... See full document
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1 (5 Hydroxy 2,2,8,8 tetramethyl 2H,8H pyrano[2,3 f]chromen 6 yl) 3 (4 methoxyphenyl)prop 2 en 1 one
... Potassium hydroxide (112 mg, 0.7 mmol) and 4-methoxybenzaldehyde (95 mg, 0.7 mmol) was added to a solution of octandrenolone (150 mg, 0.5 mmol) in ethanol (10 ml) and water (2 ml) at room temperature. The ... See full document
24
4 (4 Fluorophenyl) 2 methyl 3 (1 oxy 4 pyridyl)isoxazol 5(2H) one
... Several research groups have undertaken studies in which the imidazole ring was replaced by other 5- or 6- membered heterocycles (Laufer & Wagner, 2002; De Laszlo et al. , 1998; Laufer et al. , 2006; ... See full document
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6 Hexyl 7 hydroxy 3 (3 phenyl 1H 1,2,4 triazol 5 yl) 2H chromen 2 one monohydrate
... The three ring systems are almost coplanar. The chromen- one moiety (O1, C2±C10) is planar to within 0.025 AÊ, the maximum deviations being 0.035 (1) and ÿ0.038 (1) AÊ for atoms O1 and C8, respectively. Atoms O2 ... See full document
633
Synthesis, Characterization and Biological activity of 1,3,4- Oxadiazole and 1,3,4- Thiadiazole Derivatives.
... Dissolve 0.01mole (0.75gm) of semicarbazide in 10ml of warm water added 0.01 mole(1.40gm) of P-chlorobenzaldehyde in 10ml of ethanol and stirred well for 10mts, the precipitated 1-(4-chlorobenzylidene)semicarbazide was ... See full document
14
4 (1,1 Dimethylprop 2 enyl) 1,3,5 trihydroxy 2 (3 methylbut 2 enyl) 9H xanthen 9 one
... Allanblackia monticola Mildbr. ex Engl. (Clusiaceae) is widely distributed in West and Central Africa. In Cameroon, the species is used for the treatment of several conditions such as toothache, respiratory infections, ... See full document
8
Crystal structure of 4 chloro 2 [(5 ethoxy 1,3,4 thiadiazol 2 yl)methyl] 5 (piperidin 1 yl)pyridazin 3(2H) one
... dihydropyridazine ring are essentially coplanar (r.m.s. devia- tion = 0.008 A ˚ ), and the dihedral angle between this and the 1,3,4-thiadiazole ring is 62.06 (10) . In the crystal, centrosym- metrically related ... See full document
102
The crystal structures of two new coumarin derivatives: 2 (4 {2 [(2 oxo 2H chromen 4 yl)oxy]acetyl}piperazin 1 yl)acetamide and N (2,4 dimethoxybenzyl) 2 [(2 oxo 2H chromen 4 yl)oxy]acetamide
... represent one of the most active classes of compounds possessing a wide spectrum of biological ...agents. One of the title compounds, ... See full document
6
[3 (2 Methylphenyl) 1,2,4 oxadiazol 5 yl]methanol
... C3 0.0444 (13) 0.0737 (18) 0.0466 (14) −0.0084 (12) 0.0107 (11) −0.0049 (13) C4 0.0595 (16) 0.0584 (16) 0.0628 (17) −0.0131 (13) 0.0188 (13) −0.0176 (13) C5 0.0554 (15) 0.0440 (13) 0.0631 (16) −0.0019 (11) 0.0186 ... See full document
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9 (2 Hydroxy 6 oxocyclohex 1 en 1 yl) 2,3,4,9 tetrahydro 1H xanthen 1 one
... Menchen, S. M., Benson, S. C., Lam, J. Y. L., Zhen, W., Sun, D., Rosenblum, B. B., Khan, S. H. & Taing, M. U. S. (2003). US Patent 6 583 168. Mo, Y., Zang, H.-J. & Cheng, B.-W. (2010). ... See full document
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3 {2 [(3 {(E) 2 [4 (Dimethylamino)phenyl]ethenyl}quinoxalin 2 yl)oxy]ethyl} 1,3 oxazolidin 2 one monohydrate
... C8 0.0229 (6) 0.0181 (5) 0.0175 (6) −0.0003 (4) 0.0034 (5) 0.0020 (4) C9 0.0417 (8) 0.0205 (6) 0.0173 (6) 0.0018 (5) 0.0044 (6) 0.0012 (4) C10 0.0359 (8) 0.0261 (7) ... See full document
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