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Survival of Red King Crab （Paralithodes Camtschaticus） Juveniles on Natural and Artificial Substrates

Journal of Life Sciences 2010年第3期4卷 1-8页

作者： Willow m. Hetrick linda J. Cox Shannon K. Atkinson Spencer R. malecha Natural Resources and Environmental management University of Hawaii at Manoa Honolulu 96822 USA School of Fisheries and Ocean Sciences University of Alaska Fairbank~ Juneau 99801 USA Human Nutrition Food and Animal Sciences University of Hawaii at Manoa Honolulu 96822 USA

Understanding settlement tendencies and substrate preference is essential for king crab stock enhancement because structurally complex habitats provide red king crab juveniles with shelter and protect them from predation and cannibalism during critical stages of their lives. The growth and survival rates of juvenile red king crab （Paralithodes carntschaticus） from the first juvenile instar stage after settlement from the free-swimming glaucothoe （stage C 1）, to the third juvenile instar （stage C3）, that were reared in aquaria with natural rock, shell, and artificial substrate from June 8 to July 15, 2008 at the Alutiiq Pride Shellfish Hatchery in Seward Alaska were evaluated. The percent of crabs surviving to the C3 juvenile stage was the highest （34%） for the artificial substrate, the lowest （24%） for the shell substrate, and intermediate （27%） for the rock substrate. No significant differences were found in the wet weight and carapace width （P〉0.05） among these three treatments, although the crabs were reared in the natural shell substrate, were heavier, （4.1±0.3 mg） than those reared in the natural rock （3.9±0.1 mg）, and artificial substrates （3.8±0.7 mg） and crabs reared in the natural rock substrate were larger （1.8±0.2 mm） than those reared in the natural shell （1.7±0.2 mm）, and the same as those in the artificial substrates （1.8±0.2 mm）. These results may be due to the short length of the experiment relative to the life cycle of the species. Further research is needed to understand the optimal environmental conditions for juvenile crabs and determine how their crucial habitats, which may be easily disturbed by human activities, can be conserved.

关键词： Red king crab natural and artificial substrates juvenile stock enhancement.

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Electro-mechanical offset measurements of beam position monitors

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辐射探测技术与方法(英文) 2023年第2期7卷 288-296页

作者： Jun He Yanfeng Sui Yong Li Yaoyao Du linda Yu Junhui Yue Jianshe Cao Xujian Wang Zhe Duan Ouzheng Xiao Key Laboratory of Particle Acceleration Physics and Technology Institute of High Energy PhysicsChinese Academy of SciencesBeijing100049China University of Chinese Academy of Sciences Beijing100049China

Purpose The absolute beam position measurement in the booster and storage ring of the high energy photon source(HEPS)requires the offset between the electrical and mechanical centers of the beam position monitor(BPm).method Traditionally,an RF signal is sent to an antenna or stretched wire aligned with the vacuum chamber,and the signal at each electrode is ***,a replacement method using a vector network analyzer,which was proposed by Lambertson,does not involve mechanical alignment and can be used for electrical offset *** and conclusions The electro-mechanical offsets of booster BPms of the HEPS were measured using the Lambertson *** result shows good agreement with the stretched wire method within a 30μm error.

关键词： Beam position monitor mechanical center HEPS Electro-mechanical offsets

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如何做毛巾天鹅

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空中英语教室（初级版．大家说英语） 2023年第2期 14-15,51页

作者： linda m.Chung 不详

一、把一条毛巾摊平,长边位于上下侧。二、把上方的两个角折到下缘,得到一个大三角形。三、把外侧边缘分别折到中间,这样顶端会出现尖角。四、把毛巾折成Z字形,尖角是天鹅的头。五、调整天鹅的颈部。六、再做一只天鹅,两只便可构成心形。

关键词：角折天鹅尖角三角形毛巾

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刈包(译注)

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空中英语教室（初级版．大家说英语） 2020年第3期 40-41,55页

作者： linda m.Chung 不详

你想吃个美味的小吃吗?尝尝看刈包吧.这种有猪肉夹心的面皮有时又称为中式汉堡。要制作刈包,先把一片猪五花肉放进一个柔软的蒸面皮里,加上一些酸菜、新鲜香菜和花生碎然后就可以咬一口了。好吃!刈包吃起来会有点脏,但你可以同时享受到... 详细信息

你想吃个美味的小吃吗?尝尝看刈包吧.这种有猪肉夹心的面皮有时又称为中式汉堡。要制作刈包,先把一片猪五花肉放进一个柔软的蒸面皮里,加上一些酸菜、新鲜香菜和花生碎然后就可以咬一口了。好吃!刈包吃起来会有点脏,但你可以同时享受到许多种风味其中有香甜的猪肉、咸咸的酸菜、酥脆的花生碎以及新鲜的香菜只吃一个一定不够!

关键词：花生碎酸菜面皮猪肉香菜中式酥脆小吃

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你需要收据吗?

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空中英语教室（初级版．大家说英语） 2020年第10期 39-40,54,55页

作者： linda m.Chung 不详

Susie:What are you buying at the department store today,Alice?Alice:Nothing.I'm returning ***:What are you returning?Alice:These ***:Are they the wrong size?Alice:*** size is *** I want a different ***:You don't like ... 详细信息

关键词： size color. something

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