We evaluated the pathogenicity of six strains 1. fumosorosea to determine their potential as biological control agents of A. ludens by performing bioassays under laboratory conditions （25 ± 2 ℃, 60± 5% R.H...We evaluated the pathogenicity of six strains 1. fumosorosea to determine their potential as biological control agents of A. ludens by performing bioassays under laboratory conditions （25 ± 2 ℃, 60± 5% R.H and 12：12 h L： D） exposing larvae and pupae to a concentration of 1 × 10^8 conidia per milliliter using three different methods： direct spraying, spray of soil and submerged for both instars. The results showed that direct spraying method Pfr-612 strain showed the highest mortality （47%） in pupae while for larvae was strain HIB-27 to 46%. Regarding spray of soil Pfr-612 strain showed the highest percentage of mortality for pupae and larvae with 45 and 57% mortality, respectively. Finally, for the submerged method in pupae HIB-27 strain showed 62% mortality whereas in larvae HIB-32 strain showed 46%. These results indicate that A. ludens is susceptible in at least two instars to L fumosorosea and make this fungus a promising agent for control of the Mexican fruit fly.展开更多
In order to provide English as a foreign language students with effective English language learning approaches, this investigation is focused on how students deal with words when they are doing reading material. It is...In order to provide English as a foreign language students with effective English language learning approaches, this investigation is focused on how students deal with words when they are doing reading material. It is found that most students can use some skills to guess the unknown words in reading materials, such as explanatory analysis skills, syntactic analysis skills, and structural analysis skills, while they have overlooked how these words are organized metaphorically and metonymically. This investigation will provide students with the target language knowledge metaphors and metonymy, examining the impact on computer vocabulary guessing and reading comprehension through teaching the concept of metaphor and metonymy. In this research, the new word-guessing skill based on the knowledge of metaphor and metonymy was applied to word-guessing teaching in reading comprehension of computer material. The research question is studied in this experiment： Can the training of using ways of word-guessing base on the knowledge of metonymy and metaphor promote students＇ ability of word guessing in reading comprehension of computer material？ The results show that students have gradually paid attention to the word-guessing skill in reading process. The skills based on the knowledge of metaphor and metonymy have helped students get the right meaning of the unknown words in computer reading materials. It has really enlarged students＇ vocabulary and improved their confidence in finishing reading.展开更多
文摘We evaluated the pathogenicity of six strains 1. fumosorosea to determine their potential as biological control agents of A. ludens by performing bioassays under laboratory conditions （25 ± 2 ℃, 60± 5% R.H and 12：12 h L： D） exposing larvae and pupae to a concentration of 1 × 10^8 conidia per milliliter using three different methods： direct spraying, spray of soil and submerged for both instars. The results showed that direct spraying method Pfr-612 strain showed the highest mortality （47%） in pupae while for larvae was strain HIB-27 to 46%. Regarding spray of soil Pfr-612 strain showed the highest percentage of mortality for pupae and larvae with 45 and 57% mortality, respectively. Finally, for the submerged method in pupae HIB-27 strain showed 62% mortality whereas in larvae HIB-32 strain showed 46%. These results indicate that A. ludens is susceptible in at least two instars to L fumosorosea and make this fungus a promising agent for control of the Mexican fruit fly.
文摘In order to provide English as a foreign language students with effective English language learning approaches, this investigation is focused on how students deal with words when they are doing reading material. It is found that most students can use some skills to guess the unknown words in reading materials, such as explanatory analysis skills, syntactic analysis skills, and structural analysis skills, while they have overlooked how these words are organized metaphorically and metonymically. This investigation will provide students with the target language knowledge metaphors and metonymy, examining the impact on computer vocabulary guessing and reading comprehension through teaching the concept of metaphor and metonymy. In this research, the new word-guessing skill based on the knowledge of metaphor and metonymy was applied to word-guessing teaching in reading comprehension of computer material. The research question is studied in this experiment： Can the training of using ways of word-guessing base on the knowledge of metonymy and metaphor promote students＇ ability of word guessing in reading comprehension of computer material？ The results show that students have gradually paid attention to the word-guessing skill in reading process. The skills based on the knowledge of metaphor and metonymy have helped students get the right meaning of the unknown words in computer reading materials. It has really enlarged students＇ vocabulary and improved their confidence in finishing reading.
