| 1. | Genetic resources of forage for ex situ conservation in china
我国饲用植物遗传资源的异地保存 |
| 2. | The project en situ and ex situ forests are both inside nfpp area so logging and grazing are banned
项目区域和迁地区域的森林都位于国家天然森林保护计划的区域内，因此，禁止在该区域内放牧。 |
| 3. | Meanwhile , numbers can be increased by artificial propagation . most populations should be sampled so as to retain as much of the genetic diversity of the species in ex situ preservation as possible
同时还要对八角莲进行迁地保护，由于八角莲的居群遗传分化较大，迁地保护中应注意在较多的居群中取样，全面保护其遗传多样性。 |
| 4. | First , we prepared amorphous bacacuo precursor thin films on single crystal laalo3 ( 001 ) substrate by rf magnetron sputtering . then tl2ba2cacu2o8 hts thin films were obtained by an ex situ post annealing
本文采用射频磁控溅射法在laalo3 ( 001 )单晶基片上制备了bacacuo非晶前驱物薄膜，然后将前驱物薄膜进行非原位铊化处理，制备了tl2ba2cacu2o8高温超导薄膜。 |
| 5. | Effects of oxygen pressure on microstructure of lno conductive thin film has been studied by in situ reflection high energy diffraction ( rheed ) and ex situ x - ray photoelectron spectroscopy ( xps ) . in the relatively low oxygen pressure , lno film displays spotty rheed pattern
首先,通过原位高能电子衍射( rheed )及x光电子能谱( xps )研究了氧分压对lno导电薄膜微结构的影响,并进一步提出了氧分压对lno薄膜微结构的影响的机理。 |
| 6. | The results indicates that superconducting mgb2 thin films can be prepared by hfcvd in a single - step with the maximum critical transition temperature tc of 36k ; the best critical transition temperature tc of thin films grown by hpcvd in a single - step is 34k . the optimal zero resistance temperature tco of thin films fabricated ex situ is 37 k by post - annealing of precursor b film at 800 for 1 h under high mg vapor pressure
实验结果表明，用hfcvd法在400原位制备了临界温度为36k的mgb2超导薄膜；用hpcvd法在700原位制备了临界温度为34k的mgb2超导薄膜；将300制备的前驱物b膜在mg蒸气中800保温1h非原位退火，制备了临界温度为37k的mgb2超导薄膜。 |
| 7. | In the first step , effect of the target ' s components on properties of thin films was investigated . influences of tl2o partial pressure and thallination temperature on the component phases and properties of tl2ba2cacu2o8 hts thin films were studied in the second step of ex situ post annealing treatments
在溅射沉积前驱物薄膜的过程中，研究了靶材成分对薄膜性能的影响；铊化后处理过程中，研究了tl2o分压和铊化温度对tl2ba2cacu2o8高温超导薄膜相组成及其性能的影响。 |
| 8. | Superconducting mgb2 thin films were fabricated on single - crystal sapphire substrate by hfcvd and hpcvd , respectively . the experiments were carried out both in situ and ex situ . in situ method refers to acquiring mgb2 thin films directly during the deposition process . ex situ method is defined as obtaining mgb2 thin films indirectly by post - annealing of precursor b film in high mg vapor pressure at high temperatures
实验分原位法和非原位法两种工艺，原位法是在薄膜沉积过程中直接生成了mgb2超导薄膜；非原位法是先在基片上沉积前驱物b膜，然后将b膜在mg蒸气中高温退火得到mgb2超导薄膜。 |
| 9. | When increasing the oxygen pressure , the rheed pattern changes to streaky one again . this rheed pattern transformation induced by the oxygen pressure is reversible . ex situ xps results indicate that the element ni of lno film deposited in the relatively low oxygen pressure with thickness below the critical value exists in the form as ni2 + , while as ni3 + in the relatively high oxygen pressure
随着膜厚增加而超过约30nm的临界厚度时,越来越多的晶格氧会移动到了薄膜表面,此时所提供的氧将使得后续生长的lno膜层重新形成钙钛矿结构,并以层状方式外延生长。 |
