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author = "Calvo, J"
<< < 1 2 3 4 5 > >>

Found 119 documents, displaying page 3 of 12

Effect of 4-Azaleucine upon Leucine Metabolism in Salmonella typhimurium1

Author(s) : Stieglitz, B. , Calvo, J. M.
Description : dl-4-Azaleucine (5 × 3−3m) added to exponentially growing cells of Salmonella typhimurium resulted in an abrupt cessation of growth lasting 4 to 8 hr followed by a resumption of division. The transitory nature of inhibition was not due to the instability or modification of the analogue or to a derep...
Repository : Europe PubMed Central
Language(s) : English

Alternative secondary structures of leader RNAs and the regulation of the trp, phe, his, thr, and leu operons.

Author(s) : Keller, E B , Calvo, J M
Description : The trp, phe, his, thr, and leu operons of enteric bacteria are regulated by a transcriptional attenuation mechanism. Under conditions of amino acid sufficiency, transcription terminates at an attenuator site after a leader of about 150 nucleotides has been synthesized. Under conditions of limitatio...
Repository : Europe PubMed Central
Language(s) : English

Simulación de sistemas lineales de control con CAPTURE de ORCAD

Author(s) : Calvo, J.L. , Masdias, A. , Oliver, F.C.
Description : El objetivo de este documento es el dar a conocer la posibilidad de una herramienta concebida inicialmente para la edición y análisis de circuitos eléctricos y electrónicos, que es el Capture de Orcad. Dicha posibilidad es la de análisis de sistemas lineales de control de forma gráfica. En este aspe...
Repository : e-spacio UNED
Language(s) : Spanish

Domed buildings in the twelfth century. The monastery of "Santa Maria de Moreruela"

Author(s) : Campano Calvo, J.L. , Rio Merino, Mercedes del
Description : The monastery of “Santa Maria de Moreruela”, whose origins according to many historians date from the twelfth century, is the first of the Cistercian enclaves built on the Iberian Peninsula. It is now in ruins and is considered one of the great examples of the cultural heritage of the province of...
Repository : Archivo Digital UPM
Language(s) : Spanish

Individual age and connective tissue lipofuscin in the hard clam Eurhomalea exalbida

Author(s) : Lomovasky, B. , Morriconi, E. , Brey, Thomas , Calvo, J.
Description : In the hard clam Eurhomalea exalbida autofluorescent granules were detected in high concentrations in the connective tissue around the intestine and in other tissues. Autofluorescence combined with Sudan Black B and PAS positive reactions suggested that these granules were lipofuscin-like. The conce...
Repository : ePIC
Language(s) : Undetermined

Growth and production of the venerid bivalve Eurhomalea exalbida in the Beagle Channel, Tierra del Fuego

Author(s) : Lomovasky, B. , Brey, Thomas , Morriconi, E. , Calvo, J.
Description : Growth, mortality and productivity of the hard clam E. exalbida from Ushuaia Bay, Beagle Channel were investigated. The parameters of the von Bertalanffy growth function were estimated to be H = 73.98 mm, K = 0.180 y 1, t0 = 0.147 y. Maximum individual production amounted to 2.742 g shell free wet m...
Repository : ePIC
Language(s) : Undetermined

The reproductive cycle of Eurhomalea exalbida (Chemnitz, 1795) (Bivalvia: Veneridae) in Ushuaia Bay (54°50′ S), Beagle Channel (Argentina)

Author(s) : Morriconi, E. , Lomovasky, B. , Calvo, J. , Brey, Thomas
Description : The reproductive cycle of Eurhomalea exalbida (Chemnitz, 1795) in Ushuaia Bay, Beagle Channel, was studied from October 1998 to December 1999. Clams were collected monthly by SCUBA diving at 3 to 5 m water depth. The degree of sexual maturity was determined histologically (n=318). The sex ratio was ...
Repository : ePIC
Language(s) : Undetermined

Los depósitos areníticos del Cámbrico inferior de la Unidad de Mesones (Cadena Ibérica Oriental)

Author(s) : Mandado Collado, J. , Tena Calvo, J. M.
Description :
Repository : UDCDspace
Language(s) : Spanish

Sex-related differences in the nuclear population of postpubertal rat pineal gland. A quantitative study

Author(s) : López.Muñoz, F. , Boya, J. , Calvo, J.L.
Description : Male and female parenchymal pineal cell types have been studied throughout postpubertal development to determine the existence of sex-related differences on a time basis. Six age groups (2, 3,4, 8, 15 and 24 months) of eight rats (4 males and 4 females) were used in this study. Nuclei of both parenc...
Repository : DIGITUM. Depósito Digital Institucional de la Universidad de Murcia.
Language(s) : English

Sulpate-limited growth in the N2-fixing unicellular cyanobacterium Gloeothece (Nageli) sp. PCC 6909.

Author(s) : Ortega-Calvo, J.J. , Stal, L.J.
Description :
Repository : Publications of the Universiteit van Amsterdam
Language(s) : Undetermined
<< < 1 2 3 4 5 > >>

Found 119 documents, displaying page 3 of 12