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Engineers develop precision injection system for plants（图）
Engineers precision injection system plants
2020/5/9
While the human world is reeling from one pandemic, ongoing epidemics are affecting crops and putting global food production at risk. Oranges, olives and bananas are under threat in many areas due to ...
Injection system design for a hadron therapy synchrotron
injection mode stripping injection synchrotron lattice
2009/8/17
A synchrotron is designed for tumour therapy with C6+ ions or proton. Its injector is a cyclotron, which delivers C5+ or H2+ ions to the synchrotron. After comparing the methods of the single-turn inj...
温度对柴油和二甲醚喷射系统性能的影响（Comparison of Diesel and DME Injection System Performances at Different Temperatures）
喷射系统 温度 柴油 二甲醚
2009/8/11
针对普通油泵—油管—油嘴燃油系统，建立了喷射系统的数学模型。对不同温度下柴油和二甲醚喷射系统性能进行了数值模拟。研究表明：在相同温度下，二甲醚喷嘴压力的上升和下降速率、压力峰值都比柴油低，20℃时二甲醚较柴油下降51.1%，50℃时较柴油下降45.2%，喷射速度和累积喷油量均远低于柴油，针阀开启时刻较柴油明显延后；在最大速度点，20℃和50℃时二甲醚分别较柴油下降38.8%和36.8%。随着温度的...
Morphology of testicular spermatozoa obtained by testicular sperm extraction in obstructive and nonobstructive azoospermic men and its relation to fertilization success in the in vitro fertilization-intracytoplasmic sperm injection system
Morphology testicular spermatozoa testicular sperm extraction azoospermic men
2008/12/26
The aim of the present study was to evaluate the morphology of testicular spermatozoa by 3 different determinants. Sperm cells were obtained and their morphology was evaluated from 27 testicular spe...