dca 中文意思是什麼

dca 解釋
21-醋氧孕酮
  1. The results indicated that : jaj could selectively stimulate the reprduction of bifidobacteria in vivo and inhibit the growth of e. coli which is a main parasitic basterium in human intestinal tract ; moreover, jaj could apprarently improve intestinal tract function. in tested group, the mice excreted smoothly and the faecal particles of mice were big and wet, but in control group, the faecal particles of mice were small and dry. lt was suggested that inulin may be the important effective component in jaj which promoted the reprduction of bifidobacteria in vivo. at last, the effects of ja on the bile salt resis tance of bifidobacteria were studied. the test proved that : deoxycholic acid na - salt ( dca - na ) had intensely toxical action on blm and bbm ; adding glucose and fructose in media could decrease the lexical action on bbm. but inulin and jap had not apparent effect

    在通過單菌株檢驗和混菌檢驗確立了一種選擇性雙歧桿菌培養基之後，進一步以健康昆明系小鼠為實驗動物，研究了菊芋在動物腸道內對雙歧桿菌的影響，動物實驗結果表明，菊芋汁在體內對雙歧桿菌有選擇性促進生長作用，而腸道中主要條件致病菌?大腸桿菌的生長受到抑制；菊芋中的菊糖成分可能對菊芋在體內選擇性地促進雙歧桿菌生長起了主要作用；此外，菊芋還具有明顯的整腸作用，同對照組相比，飼喂菊芋汁的小鼠排便順利，糞便顆粒大且濕潤。
  2. In this case, lss - dca aligned the sequences with the same way as clustalw

    在這種情況下， lss - dca的策略就不起作用，只採用clustalw對齊序列。
  3. An implementation of lss - dca is developed and the time and memory requirement of the program are assessed

    我們用visua1c +十開發了基於lss一dca思想的計算機程序，並測試了lss一dca程序的計算時間和內存要求。
  4. Several examples are shown and the alignment results produced by lss - dca are compared systematically to the results of six other alignment programs

    用幾個序列數據對lss一dca程序進行驗證，對齊結果與其它的6個對齊程序進行比較。
  5. The progressive method to compute lsses is so strictly that it is very possible to find no lss in sequences, which leads to fail of dca procedure

    這種嚴格的漸近演算法十分可能導致不能發現序列集中的相似片段，這將導致dca過程不能進行下去。
  6. In the analysis of ecological relationship between vegetation and environment, we got 11 community types by combining twinspan with dca. the first axis of oca indicated the elevation level and heat gradient while the second axis indicated slope factor. the analysis shows that the resource of tourism in pangquan gully is abundant and the construction is rational

    第一軸基本上反映了各植物群落所在環境的海拔和熱量梯度，從左到右，海拔在體呈升高趨勢，熱量呈下降趨勢；第二軸基本反映了各植物群落所在的坡度梯度，從下到上呈良好的發展趨勢，從群落類型來看，各群落類型在排序圖上有規律地分佈，得出龐泉溝植被結構合理，分佈符合自然進化規律，龐泉溝生態旅遊資源未受到破壞，人為因素不明顯。
  7. The result of dca ordination shows that diffirent plant communities and their distributing area vary with the environmental grads in the ordination graph when the first axis of dca denotes altitude change and the sencond axis of dca denotes change of water equivalent in the soil

    Dca排序結果表明， dca第一軸反映海拔變化， dca第二軸表示土壤含水量的變化，隨著環境梯度變化，不同的植物群落在排序圖上也有各自的分佈范圍。
  8. In response to recent press reports on the flight time limitations ( ftl ) scheme and criticisms on the civil aviation department ( cad ) s competency to deal with aviation issues, a spokesman for the department said today ( april 7 ) that the director of civil aviation ( dca ) does have a wealth of experience in aviation administration

    民航處發言人今日（四月七日）回應近日報章報導飛行時間限制計劃和對民航處處理飛行事宜能力的批評時表示，民航處處長在航空管理方面經驗豐富。民航處飛行標準及適航部的機師也就有關事宜為處長提供專業意見。
  9. 3 eight communities are identified by gradient analysis in desert - oasis ecotone, and species are divided into 5 ecological groups. dca ordination is superior to cca and dcca. variation of vegetation explained by environmental and spatial factors reaches 23. 4 % ; among these the species matrix explained by non - spatial soil factors account for up to 11. 5 % of variation, spatial variation that is not shared by soil factors explains up to 11. 6 %, their interaction explains up to 0. 3 %

    3 、通過梯度分析，阜康荒漠綠洲過渡帶群落可分為8個類型，物種可分成5個生態類型； dca排序效果優于cca和dcca ；土壤和空間因子解釋了植被分異的23 . 4 ，其中土壤因子佔11 . 5 ，空間因子佔11 . 6 ，二者交互作用佔0 . 3 。
  10. Dca digital command assembly

    數字指令裝置
  11. 1. study on classifying and ordination of plant communities : acording to the ecological relationship between plant species, plant communities and environment, we study the communities types, structure and distributing pattern of midland of taihang mountain by using twinspan, dca, cca, dcca and so on

    植物群落的分類和排序研究：應用twinspan分類和dca 、 cca 、 dcca等方法，從植物種、植物群落與環境的生態關系方面，研究了太行山中段各群落類型、結構及分佈格局。
  12. Application of dca to study distributive patterns of isodon in china

    應用除趨勢對應分析探討香茶菜屬植物在中國的分散式樣
  13. Dca on medicinal materials of three species of isodon kudo based on their uv spectra

    三種香茶菜藥材紫外光譜的除趨勢對應分析
  14. The first axis of dca indicated the water gradient of soil while the second axis reflected the altitude gradient. the moisture of soil descend from left to right, while the altitude ascend from down to up

    Dca排序第一軸反映了土壤水分梯度，從左到右土壤含水量在不斷下降；第二軸反映了海拔梯度，從下到上海拔高度在不斷升高。
  15. Dca has followed exactly the statements made by both counsels

    民航處處長絕對依從這些聲明行事。
  16. The results of dca suggested the first axis showed light gradients and the second axis reflected humidity gradients

    Dca排序結果表明，第一軸反映了光照梯度，第二軸反映了水分梯度。
  17. Lss - dca employs a simplified but very strict progressive method to localize the obvious longest similarity segments ( lss ) in the sequences and then cut the sequences at the two terminals of lss

    Lss - dca採用了一種簡化的但十分嚴格的漸近方法來計算序列中顯而易見的最長相似片段（ lss ） 。
  18. In this paper, we present a new alignment method ( lss - dca ) that combines the advantages of the dca method and progressive method, and that balances the speed and the quality better

    在本文中，我們提出了一種新的多序列對齊演算法lss - dca 。 lss - dca結合了dca方法和漸近方法的優點，達到了計算速度和對齊質量的較好平衡。
  19. The first axis of dca ordination reflects a synthetic environmental gradient, positively correlated with precipitation, humidity, heating, primary productivity, and potential evaporation etc. the second axis of dca represents changes in altitude and longitude

    Dca排序第一軸表現了一個綜合的環境梯度，即從左到右，降水、濕度、熱量、初級生產力、潛在蒸發量逐漸增強， dca第二軸反應了海拔和經度的變化，即從上到下，海拔降低、經度增加。
  20. The ecological relationship of species, community and environment in elaeagnus mollis communities were studied by using twinspan and dca

    本文應用twinspan分類和dca排序相結合的方法，研究了翅果油樹群落的物種、植物群落與環境的生態關系。
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