WorldCat Identities

Guzmán, J.

Overview
Works: 57 works in 104 publications in 2 languages and 141 library holdings
Roles: Author
Classifications: QA11.2, 338.9
Publication Timeline
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Most widely held works by J Guzmán
La teoría circular del desarrollo. Un enfoque complejo by Emilio Fontela( )

4 editions published between 2000 and 2006 in Spanish and held by 44 WorldCat member libraries worldwide

La teoría circular del desarrollo. Un enfoque complejo
Dibujo Curso quinto-Técnico by J Guzmán( Book )

8 editions published between 1960 and 1967 in Spanish and held by 8 WorldCat member libraries worldwide

Dibujo Curso tercero by J Guzmán( Book )

8 editions published between 1960 and 1967 in Spanish and held by 8 WorldCat member libraries worldwide

Dibujo Curso segundo by J Guzmán( Book )

8 editions published between 1960 and 1967 in Spanish and held by 8 WorldCat member libraries worldwide

Dibujo Curso primero by J Guzmán( Book )

7 editions published between 1960 and 1967 in Spanish and held by 7 WorldCat member libraries worldwide

Dibujo : Curso quinto art by J Guzmán( Book )

4 editions published between 1961 and 1966 in Spanish and held by 4 WorldCat member libraries worldwide

Technology-supported mathematics learning environments( Book )

1 edition published in 2005 in English and held by 4 WorldCat member libraries worldwide

Electroanálisis y macroelectroanálisis del niquel con electrodos de hierro by J Guzmán( Book )

3 editions published in 1934 in Spanish and held by 3 WorldCat member libraries worldwide

Macroelectroanálisis de Co, Zn, Cd, Ag y Hg by J Guzmán( Book )

2 editions published in 1933 in Spanish and held by 2 WorldCat member libraries worldwide

Resistencias eléctricas regulables y fichas hechas con grafito by J Guzmán( Book )

2 editions published in 1933 in Spanish and held by 2 WorldCat member libraries worldwide

Macroelectroanálisis y separación rápida del cobre y niquel by Julio Guzmán Carrancio( Book )

3 editions published in 1932 in Spanish and held by 2 WorldCat member libraries worldwide

Probable effect of photoperiod on seasonal variation in the nuclear volume of the adrenal cortex of viscacha (Lagostomus maximus maximus) by A. C Ribes( )

1 edition published in 1999 in English and held by 2 WorldCat member libraries worldwide

The neuroendocrine system regulates several organic functions such as reproduction, metabolism and adaptation to the environment. This system shows seasonal changes linked to the environment. The experimental model used in the present study was Lagostomus maximus maximus (viscacha). The reproduction of males of this species is photoperiod dependent. Twenty-four adult male viscachas were captured in their habitat at different times during one year. The adrenal glands were processed for light microscopy. Serial cuts were stained with hematoxylin-eosin for the morphometric study, and 100 nuclei of each zone of the adrenal cortex were counted per animal. Data were analyzed statistically by ANOVA and the Tukey test. The cells of the glomerulosa zone are arranged in a tube-shaped structure. The fasciculata zone has large cells with central nuclei and clearly visible nucleoli and with a vacuolar cytoplasm. In the reticularis zone there are two of types of cells, one with a nucleus of fine chromatin and a clearly visible nucleolus and the other with nuclear pycnosis. Morphometric analysis showed maximum nuclear volumes during the February-March period with values of 133 percet 7.3 -m3 for the glomerulosa, 286.4 percent 14.72 -m3 for the fasciculata, and 126.3 percent 9.49 -m3 for the reticularis. Minimum nuclear volumes were observed in August with values of 88.24 + or - 9.9 -m3 for the glomerulosa, 163.7 percent 7.78 -m3 for the fasciculata and 64.58 + or - 4.53 -m3 for the reticularis. The short winter photoperiod to which viscacha is subjected could inhibit the adrenal cortex through a melatonin increase which reduces the nuclear volume as well as the cellular activity
Artificio para el calibrado eléctrico de hilos metálicos by J Guzmán( Book )

3 editions published in 1934 in Spanish and held by 2 WorldCat member libraries worldwide

Electroanálisis con tres electrodos by J Guzmán( Book )

2 editions published in 1934 in Spanish and held by 2 WorldCat member libraries worldwide

Dibujo Curso quinto. Artístico by J Guzmán( Book )

2 editions published between 1960 and 1964 in Spanish and held by 2 WorldCat member libraries worldwide

Simplificaciones en las potenciometrías de salto e inversión by Julio de Guzmán Carrancio( Book )

1 edition published in 1934 in Spanish and held by 1 WorldCat member library worldwide

Bibureta by J Guzmán( Book )

1 edition published in 1935 in Spanish and held by 1 WorldCat member library worldwide

Gravimetrías a usanza del siglo XVI by J Guzmán( Book )

1 edition published in 1936 in Spanish and held by 1 WorldCat member library worldwide

Electroanálisis del mercurio sin electrodos de platino by J Guzmán( Book )

1 edition published in 1918 in Spanish and held by 1 WorldCat member library worldwide

Dibujo : Quinto artístico by J Guzmán( Book )

1 edition published in 1971 in Spanish and held by 1 WorldCat member library worldwide

 
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Audience Level
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Audience level: 0.71 (from 0.40 for La teoría ... to 0.99 for Dibujo Cur ...)

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