| 000 | 02678nam a2200349 a 4500 | ||
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| 003 | OSt | ||
| 005 | 20250813101837.0 | ||
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| 008 | 250624s2025 mx a|||fom||| 001 0 spa d | ||
| 040 | _erda | ||
| 100 | 1 |
_aUribe Cruz, Francisco _9190555 |
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| 245 | 1 | 0 |
_aCuantificación del rendimiento del tractor sobre orugas en la construcción de caminos forestales / _cpor Francisco Uribe Cruz y Nectar Cruz Lievano; director de tesis Rigoberto Vargas Carballo; secretario Carlos Cíntora González; vocal Saúl B. Monreal Rangel; suplente Leonardo Sánchez Rojas; suplente Andrés de la Rosa Ramírez. |
| 264 | 1 |
_aChapingo, México : _bEl autor, _c1993. |
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| 300 |
_a1 recurso en línea (80 páginas): _bcuadros, figuras. |
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| 336 |
_2rdacontent _atexto _btxt |
||
| 337 |
_2rdamedia _acomputadora _bc |
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| 338 |
_2rdacarrier _arecurso en línea _bcr |
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| 502 |
_bIFOEyo _cDICIFO _d1993. _gLIC |
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| 504 | _aIncluye referencias bibliográficas: páginas 57-60. | ||
| 520 | _ahis study determine the influence of extern factors (transversal slope and type of material) which affect the efficiency of CAT-D5B crawler tractor according to Monreal approach (1991), in order to find the mean efficiency (meters/hour) and obtain basis to planning and controlling on forest road construction. There were related efficiency for analysis of variance as dependent variable with the factors transversal slope and type of materials as independent variables. The results were as follow: the dependent variable was explained in a 72% by the independent variables. Tukey test shows that with alpha=0.05, exist a significant difference between treatment one and the rest of treatments. Contrast test shows that exist significative difference on the efficiency when changes in slope and type of materials occurred in accord to an alpha=0.05. Starting from these results, a previous planning to improve the efficiency and reducing costs of road construction, is proposed. | ||
| 650 | 4 |
_aTractores _xPruebas _9114586 |
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| 650 | 4 |
_aMaquinaria _xValoración _971149 |
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| 650 | 4 |
_aRecursos forestales _xConservación _995044 |
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| 700 | 1 |
_aCruz Lievano, Néctar _9190556 |
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| 700 | 1 |
_aVargas Carballo, Rigoberto _edirector de tesis. _9117985 |
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| 700 | 1 |
_aCíntora González, Carlos Leopoldo _9185269 _esecretario. |
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| 700 | 1 |
_aMonreal Rangel, Saúl Benjamín _977625 _evocal. |
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| 700 | 1 |
_aSánchez Rojas, Leonardo _9107808 _esuplente. |
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| 700 | 1 |
_aRosa Ramírez, Andrés de la _esuplente. _9190712 |
|
| 856 |
_uhttp://10.13.5.2/tesis/tl/8510857-5_Y_8611193-8_URIBE_CRUZ_FRANCISCO_Y_CRUZ_LIEVANO_NECTAR.pdf _zDESCARGAR PDF |
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| 942 |
_2Clasificación Universidad Autónoma Chapingo _cTD |
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| 999 |
_c220684 _d220684 |
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