Search Results - (Author, Cooperation:R. Montes)
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1Latest Papers from Table of Contents or Articles in PressJose L. E. Monti, Monica R. Montes, Rolando C. Rossi
The American Society for Biochemistry and Molecular Biology (ASBMB)
Published 2018Staff ViewPublication Date: 2018-01-27Publisher: The American Society for Biochemistry and Molecular Biology (ASBMB)Print ISSN: 0021-9258Electronic ISSN: 1083-351XTopics: BiologyChemistry and PharmacologyPublished by: -
2Latest Papers from Table of Contents or Articles in PressA. W. Pike ; D. L. Hoffmann ; M. Garcia-Diez ; P. B. Pettitt ; J. Alcolea ; R. De Balbin ; C. Gonzalez-Sainz ; C. de las Heras ; J. A. Lasheras ; R. Montes ; J. Zilhao
American Association for the Advancement of Science (AAAS)
Published 2012Staff ViewPublication Date: 2012-06-16Publisher: American Association for the Advancement of Science (AAAS)Print ISSN: 0036-8075Electronic ISSN: 1095-9203Topics: BiologyChemistry and PharmacologyComputer ScienceMedicineNatural Sciences in GeneralPhysicsKeywords: Animals ; Calcium Carbonate ; *Caves ; Culture ; Engraving and Engravings/*history ; History, Ancient ; Humans ; Neanderthals ; Paintings/*history ; *Radiometric Dating ; Spain ; UraniumPublished by: -
3Latest Papers from Table of Contents or Articles in PressC. E. Lehmann ; T. M. Anderson ; M. Sankaran ; S. I. Higgins ; S. Archibald ; W. A. Hoffmann ; N. P. Hanan ; R. J. Williams ; R. J. Fensham ; J. Felfili ; L. B. Hutley ; J. Ratnam ; J. San Jose ; R. Montes ; D. Franklin ; J. Russell-Smith ; C. M. Ryan ; G. Durigan ; P. Hiernaux ; R. Haidar ; D. M. Bowman ; W. J. Bond
American Association for the Advancement of Science (AAAS)
Published 2014Staff ViewPublication Date: 2014-02-01Publisher: American Association for the Advancement of Science (AAAS)Print ISSN: 0036-8075Electronic ISSN: 1095-9203Topics: BiologyChemistry and PharmacologyComputer ScienceMedicineNatural Sciences in GeneralPhysicsKeywords: Africa ; Australia ; *Climate ; *Ecosystem ; *Fires ; Humidity ; Models, Biological ; South America ; *TreesPublished by: -
4Articles: DFG German National LicensesSáez, J. A. ; Palomares, J. M. ; Vives, F. ; Domínguez, I. ; Villegas, I. ; Montes, R. ; Price, D. J. ; Ferrer, J. M. R.
Oxford, UK : Blackwell Science Ltd
Published 1998Staff ViewISSN: 1460-9568Source: Blackwell Publishing Journal Backfiles 1879-2005Topics: MedicineNotes: The projection from the dorsal lateral geniculate nucleus to the primary visual cortex of the rat was studied electrophysiologically. Electrical stimulation of the dorsal lateral geniculate nucleus and the optic tract produced three types of responses on neurons of area 17: excitation followed by inhibition, excitation and inhibition. These results extend and confirm, in adult rats, previous studies done in rat geniculate-visual cortex cocultures preparations in vitro. The role of glutamate in the neurotransmission of the rat geniculo-cortical pathway was also investigated. In a first set of experiments, the effects of kynurenate, an antagonist of glutamate receptors, on visual cortex neurons with a monosynaptic excitatory response to dorsal lateral geniculate nucleus stimulation were studied. Microiontophoresis of kynurenate in area 17 neurons selectively suppressed the excitatory response to dorsal lateral geniculate nucleus and optic tract stimulation. In a second set of experiments, the effects of electrical stimulation of the dorsal lateral geniculate nucleus and the optic tract on the release of amino acids in the rat visual cortex in vivo were studied. Using the push–pull method, we perfused a discrete region of the visual cortex with artificial cerebrospinal fluid (CSF), and the amino acid content of the perfusates was analysed by high performance liquid chromatography (HPLC). Stimulation of either the dorsal lateral geniculate nucleus or the optic tract significantly increased glutamate release in area 17. The rest of the amino acids studied did not show significant changes. The results provide evidence for the participation of glutamate in the neurotransmission of the geniculo-cortical pathway in the rat.Type of Medium: Electronic ResourceURL: -
5Articles: DFG German National LicensesStaff View
ISSN: 0003-2670Keywords: Amiloride ; Pharmaceuticals ; Raman spectrometry ; UrineSource: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002Topics: Chemistry and PharmacologyType of Medium: Electronic ResourceURL: -
6Articles: DFG German National LicensesStaff View
ISSN: 0003-2670Keywords: Amphetamine ; Mefenorex ; Pemoline ; Pentylenetetrazole ; Pharmaceuticals ; Raman spectrometry ; Sports doping ; Stimulant drugsSource: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002Topics: Chemistry and PharmacologyType of Medium: Electronic ResourceURL: -
7Articles: DFG German National LicensesStaff View
ISSN: 0924-2031Keywords: Amphetamine ; Mefenorex ; Pemoline ; Pentylenetetrazole ; Pharmaceuticals ; Raman spectrometry ; Sports doping ; Stimulant drugsSource: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002Topics: Chemistry and PharmacologyPhysicsType of Medium: Electronic ResourceURL: -
8Articles: DFG German National LicensesStaff View
ISSN: 0039-9140Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002Topics: Chemistry and PharmacologyType of Medium: Electronic ResourceURL: -
9Articles: DFG German National LicensesStaff View
ISSN: 0003-2670Keywords: Electrophoresis ; Fluorimetry ; Pharmaceuticals ; Pulsed-laser detectionSource: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002Topics: Chemistry and PharmacologyType of Medium: Electronic ResourceURL: -
10Articles: DFG German National LicensesStaff View
ISSN: 1436-5073Source: Springer Online Journal Archives 1860-2000Topics: Chemistry and PharmacologyNotes: Summary Kinetic Determination of Cobalt by Complexation with Pyridine-2-Aldehyde 2-Pyridylhydrazone and Ligand Oxidation with Bromate Optimum conditions for a kinetic procedure are outlined for the determination of cobalt. The rate of disappearance of pyridine-2-aldehyde 2-pyridylhydrazone (PAPH) in acidic medium is monitored spectrophotometrically at 372 nm. The method is based on the modification of the oxidation rate by complexation of PAPH with cobalt ions. The detection limit has been determined and the limitations to the sensitivity are discussed. A number of foreign ions have been tested for interference and the fundamental basis of their effects is discussed. The method has been used for determination of cobalt in soil samples.Type of Medium: Electronic ResourceURL: -
11Articles: DFG German National LicensesStaff View
ISSN: 1572-9729Keywords: nutrient input rate ; atmospheric deposition ; Trachypogon spp. ; savanna ; South AmericaSource: Springer Online Journal Archives 1860-2000Topics: BiologyEnergy, Environment Protection, Nuclear Power EngineeringAgriculture, Forestry, Horticulture, Fishery, Domestic Science, NutritionNotes: Abstract Samples of bulk precipitation were collected in the Trachypogon savanna, Calabozo, Venezuela, during three consecutive years. In the first year, rain samples were taken daily; in the following years the samples were grouped on a monthly basis. In addition, samples of dry deposition were collected during the dry seasons. All samples were analyzed for the following water soluble cations and anions: P04-P, S04-S, N03-N, NH4-N, Ca+2, Mg+2, K+, Na+ and H+. The mean annual input rate of chemical constituents (Kg ha-1 year-1) was: PO4-P (0.42); SO4-S (2.62); NO3-N (0.21); NH4-N (2.03); Ca+2 (3.50); Mg+2 (11.31); K+ (3.60); Na+ (5.93) and H+ (0.03). The total mean input of particulate material to the savanna during the dry season was 2.06 Kg ha-1 year-1, with a soluble fraction of 30%. Possible sources of nutrients input were analyzed.Type of Medium: Electronic ResourceURL: -
12Articles: DFG German National LicensesStaff View
ISSN: 1573-5052Keywords: Ecological factors ; Environmental gradients ; Multivariate analysis ; OrdinationSource: Springer Online Journal Archives 1860-2000Topics: BiologyNotes: Abstract Multivariate structural data describing Trachypogon savanna relationships were used to characterize the sources of variation among savannas as a function of the environmental characteristics of the Orinoco Llanos. Twenty-six savannas including major physiognomic types of the Orinoco Llanos ranging from herbaceous to bush island savannas were ordinated on a regional scale. Results of Detrented Canonical Correspondence Analysis (DCCA) using floristics variables indicated that savannas were ordinated along two complex gradients. A soil physical and chemical gradient as expressed by changes in bulk density and magnesium concentration were evident after the analysis of the first DCCA axis. The second axis was a climatic gradient of decreasing annual precipitation and incresing monthly precipitation during the dry season. The impact of human disturbance on the savanna composition was also an explanatory variable of the second DCCA axis. Savanna sites overlapped considerably in composition and most species were widely distributed, with aboveground phytomass abundance depending upon the site.Type of Medium: Electronic ResourceURL: -
13Articles: DFG German National LicensesMazorra, M. A. ; Jose, J. J. San ; Montes, R. ; Miragaya, J. Garcia ; Haridasan, M.
Springer
Published 1987Staff ViewISSN: 1573-5036Keywords: aluminium accumulating plants ; swamp palm community (morichal)Source: Springer Online Journal Archives 1860-2000Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, NutritionNotes: Abstract Aluminium concentration was analyzed in roots, stems and leaves of species growing in morichals with extreme flooded acid soils, deficient in K, Ca, Mg and P. Mean aluminium saturation was 73%. Results seem to indicate that species depending on seasonal changes in the Al concentration of plant compartments, could be grouped into “perennial aluminium accumulators”, “late aluminium accumulators” and “threshold aluminium accumulators”.Type of Medium: Electronic ResourceURL: -
14Articles: DFG German National LicensesStaff View
ISSN: 1573-5060Keywords: gametophyte ; pollen grain size ; seed size ; selection ; common bean ; Phaseolus vulgarisSource: Springer Online Journal Archives 1860-2000Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, NutritionNotes: Summary Selection among microgametophytes usually exploits variation in pollen grain germination. Studies of variation in pollen grain size in common bean (Phaseolus vulgaris L.) suggested that selection for size might lead to changes in sporophytic traits. To determine whether microgametophytic selection based on size would affect pollen grain size in subsequent generations or sporophytic traits that were correlated with pollen grain size, pollen grains from three crosses were separated into two size categories by sieving and then used to pollinate cv. Diacol Calima. Selection resulted in changes in pollen grain diameter for pollen from F1, F2 and F3 plants for all crosses. In vitro germination indicated no differences between vigor of large and small grains, but extraction and sieving reduced germinability. F1 seed from two of the crosses with size-selected pollen varied in weight according to pollen grain size, but in subsequent generations, the effect disappeared. Both size categories of selected pollen resulted in F2 progeny with reduced numbers of seeds per pod as compared to controls, suggesting that the size selection process may have resulted in indirect selection for traits reducing seed set. The overall results suggested that genes determining pollen grain size in bean have little or no effect on sporophytic traits such as seed size and seed yield.Type of Medium: Electronic ResourceURL: