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Faire une suggestion Affiner la rechercheResearch working paper series. development of PVC well screens for local fabrication in developing countries / Sternberg, Y.
Titre de série : Research working paper series Titre : development of PVC well screens for local fabrication in developing countries Type de document : texte imprimé Auteurs : Sternberg, Y. Mention d'édition : IBRD Editeur : IBRD Année de publication : 1978 ISBN/ISSN/EAN : CI-05924 Note générale : In rural areas of developing countries, the cheapest and safest source of water is usually groundwater. Pipe suitable for PVC well casings is manufactued in a number of developing countries, but high efficiency PVC development of a well screens have to be imported. This paper describes the development of a well screen that can be made in most developing countries: PVC is extrued through a special die to form a pipe with internal stiffening ribs. Langues : Anglais (eng) Mots-clés : PUITS Exhaure de l'eau Materiel de construction Pays en développement Hydraulique PVC Fabrication Index. décimale : 621.2 Hydraulique : turbines, pompes, accumulateurs, transmission hydraulique Résumé : In rural areas of developing countries, the cheapest and safest source of water is usually groundwater. Pipe suitable for PVC well casings is manufactued in a number of developing countries, but high efficiency PVC development of a well screens have to be imported. This paper describes the development of a well screen that can be made in most developing countries: PVC is extrued through a special die to form a pipe with internal stiffening ribs. Note de contenu : In rural areas of developing countries, the cheapest and safest source of water is usually groundwater. Pipe suitable for PVC well casings is manufactued in a number of developing countries, but high efficiency PVC development of a well screens have to be imported. This paper describes the development of a well screen that can be made in most developing countries: PVC is extrued through a special die to form a pipe with internal stiffening ribs. Research working paper series. development of PVC well screens for local fabrication in developing countries [texte imprimé] / Sternberg, Y. . - IBRD . - IBRD, 1978.
ISSN : CI-05924
In rural areas of developing countries, the cheapest and safest source of water is usually groundwater. Pipe suitable for PVC well casings is manufactued in a number of developing countries, but high efficiency PVC development of a well screens have to be imported. This paper describes the development of a well screen that can be made in most developing countries: PVC is extrued through a special die to form a pipe with internal stiffening ribs.
Langues : Anglais (eng)
Mots-clés : PUITS Exhaure de l'eau Materiel de construction Pays en développement Hydraulique PVC Fabrication Index. décimale : 621.2 Hydraulique : turbines, pompes, accumulateurs, transmission hydraulique Résumé : In rural areas of developing countries, the cheapest and safest source of water is usually groundwater. Pipe suitable for PVC well casings is manufactued in a number of developing countries, but high efficiency PVC development of a well screens have to be imported. This paper describes the development of a well screen that can be made in most developing countries: PVC is extrued through a special die to form a pipe with internal stiffening ribs. Note de contenu : In rural areas of developing countries, the cheapest and safest source of water is usually groundwater. Pipe suitable for PVC well casings is manufactued in a number of developing countries, but high efficiency PVC development of a well screens have to be imported. This paper describes the development of a well screen that can be made in most developing countries: PVC is extrued through a special die to form a pipe with internal stiffening ribs. Réservation
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Code-barres Cote Support Localisation Section Disponibilité CI03B924.109746 CI-05924 Rapport Bibliothèque CDI-Ouaga Fond documentaire Disponible CI03B924.109745 CI-05924 Rapport Bibliothèque CDI-Ouaga Fond documentaire Disponible CI03B924.109744 CI-05924 Rapport Bibliothèque CDI-Ouaga Fond documentaire Disponible CI03B924.109742 CI-05924 Rapport Bibliothèque CDI-Ouaga Fond documentaire Disponible CI03B924.109743 CI-05924 Rapport Bibliothèque CDI-Ouaga Fond documentaire Disponible CI03B924.109741 CI-05924 Rapport Bibliothèque CDI-Ouaga Fond documentaire Disponible CI03B924.109740 CI-05924 Rapport Bibliothèque CDI-Ouaga Fond documentaire Disponible CI03B924.109739 CI-05924 Rapport Bibliothèque CDI-Ouaga Fond documentaire Disponible
Titre de série : World Bank Staff occasional papers Titre : The economic choice between hydroelectric and thermal power developments: with a note on Joint costs in multipurpose projects Type de document : texte imprimé Auteurs : Van Der Tak, H.G. Mention d'édition : IBRD Editeur : IBRD Année de publication : 1966 ISBN/ISSN/EAN : CI-03812 Note générale : This paper has demonstrated a systematic and logically correct method for comparing the economic merits of alternative powers developments. It Was shown how the different cost streams involved can be compared by discounting them to obtain their present values of two alternative cost streams equal is a measure of the return on the additional investment in one system (hydro). It has shown how to appraise the sensitivity of this return to changes in key data of cots and demand. While variations in the estimated value of imputs-dam gerating equipement, fuel, labour, etc. Can be mode in the cost streams of alternative power developpements without changing the timping and capacity of the projected investments, this is not the case with variations in the estimated growth of the market. An attempt to work out same rough rules of thumb for this purpose has been made in this paper. Langues : Anglais (eng) Mots-clés : Electricité Hydrologie Coût Comparaison Investissement Barrage Evaluation Irrigation Méthodologie Budget Marché Gestion de l'entreprise Choix économique Index. décimale : 631.58 Méthodes de culture : jachère, assolement irrigation Résumé : This paper has demonstrated a systematic and logically correct method for comparing the economic merits of alternative powers developments. It Was shown how the different cost streams involved can be compared by discounting them to obtain their present values of two alternative cost streams equal is a measure of the return on the additional investment in one system (hydro). It has shown how to appraise the sensitivity of this return to changes in key data of cots and demand. While variations in the estimated value of imputs-dam gerating equipement, fuel, labour, etc. Can be mode in the cost streams of alternative power developpements without changing the timping and capacity of the projected investments, this is not the case with variations in the estimated growth of the market. An attempt to work out same rough rules of thumb for this purpose has been made in this paper. Note de contenu : This paper has demonstrated a systematic and logically correct method for comparing the economic merits of alternative powers developments. It Was shown how the different cost streams involved can be compared by discounting them to obtain their present values of two alternative cost streams equal is a measure of the return on the additional investment in one system (hydro). It has shown how to appraise the sensitivity of this return to changes in key data of cots and demand. While variations in the estimated value of imputs-dam gerating equipement, fuel, labour, etc. Can be mode in the cost streams of alternative power developpements without changing the timping and capacity of the projected investments, this is not the case with variations in the estimated growth of the market. An attempt to work out same rough rules of thumb for this purpose has been made in this paper. World Bank Staff occasional papers. The economic choice between hydroelectric and thermal power developments: with a note on Joint costs in multipurpose projects [texte imprimé] / Van Der Tak, H.G. . - IBRD . - IBRD, 1966.
ISSN : CI-03812
This paper has demonstrated a systematic and logically correct method for comparing the economic merits of alternative powers developments. It Was shown how the different cost streams involved can be compared by discounting them to obtain their present values of two alternative cost streams equal is a measure of the return on the additional investment in one system (hydro). It has shown how to appraise the sensitivity of this return to changes in key data of cots and demand. While variations in the estimated value of imputs-dam gerating equipement, fuel, labour, etc. Can be mode in the cost streams of alternative power developpements without changing the timping and capacity of the projected investments, this is not the case with variations in the estimated growth of the market. An attempt to work out same rough rules of thumb for this purpose has been made in this paper.
Langues : Anglais (eng)
Mots-clés : Electricité Hydrologie Coût Comparaison Investissement Barrage Evaluation Irrigation Méthodologie Budget Marché Gestion de l'entreprise Choix économique Index. décimale : 631.58 Méthodes de culture : jachère, assolement irrigation Résumé : This paper has demonstrated a systematic and logically correct method for comparing the economic merits of alternative powers developments. It Was shown how the different cost streams involved can be compared by discounting them to obtain their present values of two alternative cost streams equal is a measure of the return on the additional investment in one system (hydro). It has shown how to appraise the sensitivity of this return to changes in key data of cots and demand. While variations in the estimated value of imputs-dam gerating equipement, fuel, labour, etc. Can be mode in the cost streams of alternative power developpements without changing the timping and capacity of the projected investments, this is not the case with variations in the estimated growth of the market. An attempt to work out same rough rules of thumb for this purpose has been made in this paper. Note de contenu : This paper has demonstrated a systematic and logically correct method for comparing the economic merits of alternative powers developments. It Was shown how the different cost streams involved can be compared by discounting them to obtain their present values of two alternative cost streams equal is a measure of the return on the additional investment in one system (hydro). It has shown how to appraise the sensitivity of this return to changes in key data of cots and demand. While variations in the estimated value of imputs-dam gerating equipement, fuel, labour, etc. Can be mode in the cost streams of alternative power developpements without changing the timping and capacity of the projected investments, this is not the case with variations in the estimated growth of the market. An attempt to work out same rough rules of thumb for this purpose has been made in this paper. Réservation
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Code-barres Cote Support Localisation Section Disponibilité CI03812.168515 CI-03812 Périodique Bibliothèque CDI-Ouaga Fond documentaire Disponible CI03812.168516 CI-03812 Périodique Bibliothèque CDI-Ouaga Fond documentaire Disponible CI03812.168517 CI-03812 Périodique Bibliothèque CDI-Ouaga Fond documentaire Disponible CI03812.168518 CI-03812 Périodique Bibliothèque CDI-Ouaga Fond documentaire Disponible CI03812.168519 CI-03812 Périodique Bibliothèque CDI-Ouaga Fond documentaire Disponible CI03812.168520 CI-03812 Périodique Bibliothèque CDI-Ouaga Fond documentaire Disponible CI03812.168521 CI-03812 Périodique Bibliothèque CDI-Ouaga Fond documentaire Disponible CI03812.168522 CI-03812 Périodique Bibliothèque CDI-Ouaga Fond documentaire Disponible
