Corteza de mora. . . . Corteza de Winter... Cucharera Culén Culén-culén Cullé Cumbari Cuna Cupay Curáre Curú-mamuel Curupay Caesalpinia 15-33-39 Caesalpinia coriaria 6-36 Caesalpinia Gilliesii 96-148 Caesalpinia melanocarpa. . . 33-43-95-150 Calamagrostis montevidensis 132 Calliandra bicolor 150 Calliandra brevipes 150 Calliandra Tweedii 150 Canela alba 4 Canna edulis 192 Canna glauca 138 -425 Pá g . Canna indica 138 Capparis pruinosa 94 Capparis speciosa 94 Capparis Tweediana 94 Capsella bursa pastoris 93-146 Capsicum 4-13-28-37 Capsicum annum 194 Capsicum frutescens 23 Capsicum microcarpum 23-119-176 Capsicum pubescens 23 Carapa guianensis 4-26 Carica gossypifolia 109 Carica lanceolata 109 Carica papaya 33-34-109-164-255 Carica quercifolia 109-164-194 Carthamus lanatus 186 Caryocar amygdaliferum 15 Cassia bicapsularis 150 Cassia brasiliana 15 Cassia carnaval 194 Cassia corymbosa 150 Cassia fístula 26 Cassia sclerocarpa 15 Cayaponia ficifolia 124-184 Cecropia adenopus 84-138-194-235 Cecropia adenopus, var. lyratiloba . . 236 Cecropia adenopus, var. macrophylla 235 Cecropia adenopus, var. vulgaris. . . .

A new method of pinpointing dielectric fluid leaks on pipe-type and selfcontained cables using perfluorocarbon tracer (PFT) is presented. The method has successfully been used on the Con Edison transmission system to locate leaks of dielectric fluid on both types of cables. Application of the PFT technique does not require feeder deenergization and provides major advantages over the conventional method of freeze and pressure testing. Description ofthe method and results of field application are presented in the paper. eywcrards: pipe-type, self-contained; leak location, dielectric fluid leaks, fluid-filled cable.

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The large decline in cooperation in surveys experienced in the first decade of the twenty first century has placed representative surveys in a veritable quagmire, although numerous researchers have shown that the decline in the total nonresponse has been much higher in administered surveys (face-to-face and telephone) than in self-administered (mail and web surveys). The move from the ''traditional'' mail survey to the internet survey has brought important changes, but, at the same time, new challenges have arisen related to the lower coverage and the reduced visibility, the need for certain skills to fill out a questionnaire, changes in response rates, etc. This is a self-administered survey that informs the addressees by mail that they have been selected to participate in a research survey to which they can respond either by using the paper questionnaire (in the letter there is a prepaid envelope), by means of a web questionnaire (accessing a link and using a password), or by telephone (the respondent provided a contact time telephone number via a prepaid envelope or by calling an answering machine). The respondents themselves, therefore, choose the mode of response. An analysis of the responses achieved by each modality shows that the majority of the questionnaires were received by ordinary mail (83.6 %), 359 by internet (14.4 %), and 51 were answered by telephone (2.0 %).

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