uv b 中文意思是什麼

uv b 解釋
紫外線B，短波紫外線。

  1. This is so because climbing plants are likely to encounter intensive - changing environmental condition during their growth ( especially change of illumination ). secondly, there is a large proportion ( 30 - 40 % ) of climbing plants which belong to dioecism, and hence a gap between male and female plants on morphology, biological characteristic, economic value and so on. this dissertation focuses on herbaceous climbing plants, perennial or annual species such as dioecious trchosahthes kirilowii maxin and dioscorea opposita thumb, and monoecious luffa cylindrical ( l ) roem, it attempts to discover how climbing plants adapted to various environments and the mechanism of adaptation from aspects of physiological and reproductive ecologies at present, due to overuse of chlorofluorocarbons ( cfcs ), the ozonosphere has become thinner and thinner, and the ultraviolet - b ( uv - b ) radiation has increased considerably

    而攀援植物本身是一類理想的植物行為生態學研究材料：第一，攀緣植物由於受攀緣能力和支柱木資源的限制，在生長過程中通常要遇到強烈變化的環境條件（特別是光照） ；第二，攀緣植物中具有較高比例的雌雄異株類型，通常佔地區攀緣植物種類的30 40左右，不同性別的植物在形態學及生物學特性、經濟價值等方面存在一定的差距，因此，本文以雌雄異株攀緣植物栝樓（ trchosahtheskirilowiimaxim ） （葫蘆科多年生草質藤本植物）和山藥（ dioscoreaoppositathunb ） （薯蕷科薯蕷屬植物） 、雌雄同株異花攀緣植物絲瓜[ luffacylindrical （ l ） roem ] （葫蘆科一年生攀緣草本植物）為材料，試圖從生理生態學及生殖生態學角度揭示攀援植物如何適應不同生境及其機理。
  2. 2 effects of light quality and kt on hypocotyl elongation the hypocotyl elongation of 2 - d - old etiolated seedlings was inhibited evidently under continuous light including uv - b, wl, bl, fr and rl. the inhibition effectiveness was uv - b > wl > bl > fr > rl

    二、光質和kt對下胚軸伸長的影響不同光質持續照光對2天齡黃化下胚軸伸長有明顯的抑制，不同光質對伸長抑制的效應表現為uv - b wl bl fr rl 。
  3. The effects of uv - b on vigna radiata, glycine max and vigna angularis

    光禿禿紫外光源的增強會否令地球上的農作物消失？
  4. Research has shown that, even if destruction of the ozonosphere is stopped, it will still need about 100 years to renew it to a normal state. as a result, studies on the effects of ozonosphere thinning and the consequences of uv - b radiation on plant and ecosystem will not decline but on the contrary, is likely to increase in popularity

    據有關資料反映，即使現在已停止對臭氧層的破壞並恢復到正常狀態，估計還得100年的時間，所以有關臭氧層減薄紫外- b輻射增強對植物及生態系統的影響的研究，在相當長一段時間內不會減弱，還有可能加強。
  5. Effects of salicylic acid, ultraviolet uv - b and uv - c on

    水楊酸和紫外線對誘導采后葡萄果皮內白藜蘆醇合成作用研究
  6. Experimental results indicated that supplemental uv - b radiation decreased the number of leafy thallus and retarded the growth of leafy thallus

    結果表明，在uv - b輻射條件下，紫萍生長緩慢，葉狀體數目比對照明顯減少。
  7. Effects of uv - b radiation on the morphological structure and physiological biochemistry in leafy thallus of spirodela polyrhiza were investigated in the present study

    本文研究了紫萍在形態結構和生理生化方面對uv - b輻射的響應。
  8. ( 3 ) uv - b radiation increased the phenylalanina ammonia - lyase ( pal ) activity in leafy thallus of duckweeds, and as a consequence, flavonoids were accumulated. flavonoids synthesis induced by supplementary uv - b is an adaptive response of duckweeks under enhanced uv - b radition

    （ 3 ）紫萍可以通過提高uv - b吸收物質如類黃酮合成酶苯丙氨酸氨裂解酶（ pal ）活性，促進類黃酮的積累來適應uv - b輻射的脅迫。
  9. The main results are as follows : 1 effects of light quality and kt on cotyledon enlargement 5 - d - old seedlings of arabidopsis wild type and mutants were harvested and the cotyledons were cut to use as excised cotyledon or the whole seedlings were used as intact cotyledon. excised and intact cotyledons were incubated in the medium ( ph 6. 0 ) with or without kt under white light ( wl ), red light ( rl ), far - red light ( fr ) and uv - b at 21 ? ? for some periods of time before cotyledon area were determined by a delta - t area measurement system

    主要結果如下：一、光質和ky對于葉擴大的影響白光、紅光、藍光明顯促進5天齡幼苗離體和連體子葉擴大，遠紅光對子葉的擴大效應較弱， uv - b對子葉的擴大有抑制；對突變體的研究表明，紅光下光敏色素b 、遠紅光下光敏色素a 、藍光下隱花色素1對子葉的擴大起主要調節作用。
  10. The activities of nr increased fistly and then decreased after uv - b treatment. the gdh activities of treated plants were lower than those of control plants during the whole experiment. enhanced uv - b radiation reduced the contents of no3 - - n in spirodela polyhiza

    Uv - b輻射處理后硝酸還原酶（ nr ）活性呈先升后降的變化趨勢，谷氨酸脫氫酶（ gdh ）活性在整個處理期間均低於對照； uv - b輻射導致硝態氮含量降低。
  11. 4 effects of light quality and kt on anthocyanin accumulation 2 - d - old wl grown seedlings were irradiated with continuous wl, rl, fr, bl and uv - b, respectively, for 3 d and the accumulation of anthocyanin was detected

    四、光質和kt對花色素苷積累的作用白光、藍光、紫外光b 、紅光和遠紅光等不同光質處理2天齡白光下生長的幼繭， 3天後測定花色素昔含量。
  12. Among different light qualities wl was the most effective. the order of the effectiveness is wl > rl > bl > uv - b > fr. the ratio of ca / cb, in the seedling was also influenced by light quality

    三、光質對葉綠素積累的影響不同光質對2天齡幼苗的葉綠素積累有明顯影響，促進效應的強度依次為wl rl bl uv - b fr 。
  13. The present results indicated that enhanced uv - b radiation affected the absorption of nitrate, assimilation of nitrogen and synthesis of amino acids

    這些都嚴重影響了紫萍對硝酸鹽的吸收、氮素的同化和氨基酸的合成，進而也影響了植物體內蛋白質的合成。
  14. Duckweeds ( spirodela polyhiza ) were used as my experiment material in the present thesis to study physiological and biochemistryresponses to suoolementary uv - b radition

    本文以紫萍（ spirodelapolyhiza ）為材料，研究了紫萍在生理生化機制方面的響應，以期為同類研究提供參考。
  15. Enhanced uv - b radiation greatly decreased the content of photosynthetic pigments : chlorophyll a, chlorophyll b, and total chlorophyll. supplemental uv - b radiation induced the antioxidant system change

    Uv - b明顯降低紫萍光合作用色素（葉綠素a 、葉綠素b及總葉綠素）含量，這將導致光合作用下降。
  16. Activity of phenylalanine ammonia - lyase ( pal ) was increased by uv - b radiation, and as a consequence, uv - absorbing compounds were accumulated. it was inferred from our results that the accumulation of uv - absorbing compounds such as flavonoids may be a common response for plants in resistant to enhanced uv - b radiation

    在uv - b處理下，紫萍的苯丙氨酸氨基裂解酶（ pal ）活性上升，並導致其體內吸收uv - b的物質積累，推測類黃酮積累可能是植物抵禦uv - b逆境的一個共同效應。
  17. The transpiration of neorgelia carolinae meyendor ffii was not distinctly affect hi by enhanced uv - b radiation in a short - term, yet it was increased initially and then decreased with the increase of exposure time, and the greater decrease with higher uv - b radiation

    短期內uv - b輻射對紅彩鳳梨的蒸騰作用無明顯影響，但隨時間的延長，其蒸騰作用先增強后減弱，且隨uv - b輻射的強度的增加其減弱的程度加劇。
  18. The maize and neorgelia cawlinae meyendor ffii were treated with uv - b radiation with the intensities of 0uw. cm - 2 ( ck ), 10uw. cm - 2 ( r1 ) and 15uw. cm - 2 ( r2 ), the duration of uv - b treatment were ten hours per day ( from am8 : 00 to pm18 : 00 ). the effect of uv - b radiation on the photosynthesis was studied, and the results showed as follows : ( l ) the effects of uv - b radiation on photosynthesis of maize and neorgelia cawlinae meyendor ffii the results of the experiment show that the photosynthesis of maize seedlings was restrained because of the decrease of chlorophyll contents activity of hill reaction stamotal conductance activity of pepcase and atp content caused by increased uv - b radiation, and it was more restrained under higher uv - b radiation. though the activities of rubpcase and pepcase were decreased, the chlorophyll contents activity of hill reaction stamotal conductance of mature maize were not affected, therefore the photosynthesis of grown - up plant was not affected

    Cm ~ （ - 2 ） （ r2組）的uv - b輻射，每天處理10小時（ 8 ： 00 ? 18 ： 00 ） ，直至玉米成熟，以自然光照為對照（ ck組） ，對增強uv - b輻射條件下玉米和紅彩鳳梨光合作用的響應作了深入的研究和探討，結果如下： （ 1 ） uv - b輻射對玉米和紅彩鳳梨光合作用的影響研究結果表明，因增強uv - b輻射降低了玉米幼苗葉片的葉綠素含量、 hill反應活力、氣孔導度、 pepcase活性和atp含量，從而影響了玉米幼苗的光合作用，使其光合速率下降，且隨uv - b輻射強度的增加其影響程度加大；而玉米成株在增強uv - b輻射環境下其葉綠素含量、 hill反應活力、氣孔導度等未受影響，雖然其rubpcase活性和pepcase活性有所下降，但總體上其光合作用受到的影響不大。
  19. The results showed that light, especially bl and uv - b strongly induced the anthocyanin accumulation. rl was less effective in anthocyanin induction

    結果表明，藍光和紫外光b明顯誘導幼茁花色素昔的積累：紅光的誘導效應相對較弱。
  20. Introduced these parameters and method into the model, the uvi and spectral irradiance of uv - b at mt. waliguan are simulated, and compared with the observational data. the results of the comparisons of between the measurements with the model outputs show that tuv is very accurate for the clear sky condition

    在敏感性實驗確立的適合瓦里關地區的地表反照率參數、氣溶膠方案和雲量訂正方法的基礎上模擬了瓦里關地表的uvi和uv - b光譜輻照度，與觀測值進行比較，驗證了tuv在晴天的模擬能力較好。
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