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Gandhi Pandiyan Indira,Gunasekaran Kulaiyappa,Poonguzhali Selvaraj,Anandham Rangasamy,Kim Gil-Hah,Chung Keun-Yook,Sa Tong-Min Korean Society of Applied Entomology 2005 Journal of Asia-Pacific Entomology Vol.8 No.4
Laboratory experiment was conducted to compare the relative toxicity of biopesticides like Pseudomonas fluorescens strain pf1 and neem oil with imidacloprid, quinalphos, and endosulfan against an egg parasitoid, Trichogramma chilonis, and a predatory green lacewing, Chrysoperla carnea. Biopesticides were safer than chemical insecticides in minimizing harmful effects on development and behavior of two natural enemies. P. fluorescens treatment recorded high parasitism (${\thickapprox}73%$) and parasitoid egg development (${\thickapprox}72%$) of T. chilonis. It also gave high egg (${\thickapprox}75%$) development on C. carnea. Neem oil recorded 58.9 % parasitoid emecrgence, and 59.3 % parasitism, and 63.1 % egg hathability. Other chemical insecticides exhibited high damages on the natural enemies.
Palaniappan, M.,Subbaratnam, R. 한국비파괴검사학회 2003 한국비파괴검사학회지 Vol.23 No.4
The problems encountered by ultrasonic testing of austenitic stainless steel weld joints are discussed in the paper. Due to low thermal conductivity and the occurrence of single phase between the melting point and the room temperature, coarse and oriented grains are formed in such weld metals-more in thick sections. This leads to higher scattering at the grain boundaries and low signal to noise ratio, and extensive beam skewing. Experimental results to understand these problem are explained.
Pandiyan Indira Gandhi,Kulaiyappa Gunasekaran,Selvaraj Poonguzhali,Rangasamy Anandham,,김길하,정근욱,Tongmin Sa 한국응용곤충학회 2005 Journal of Asia-Pacific Entomology Vol.8 No.4
Laboratory experiment was conducted to compare the relative toxicity of biopesticides like Pseudomonas fluorescens strain pf1 and neem oil with imidacloprid, quinalphos, and endosulfan against an egg parasitoid, Trichogramma chilonis, and a predatory green lacewing, Chrysoperla carnea. Biopesticides were safer than chemical insecticides in minimizing harmful effects on development and behavior of two natural enemies. P. fluorescens treatment recorded high parasitism (≈73%) and parasitoid egg development (≈72%) of T. chilonis. It also gave high egg (≈75%) development on C. carnea. Neem oil recorded 58.9 % parasitoid emecrgence, and 59.3 % parasitism, and 63.1 % egg hathability. Other chemical insecticides exhibited high damages on the natural enemies.