This experiment passing to grope for the carbon source constitutes of the culture medium and using t. reesei rut c - 30 induced the expression of # - mannanase ( # - 1, 4 - mannan mannohydrolase ec 3. 2. 1. 78 ). in this experiment i put the constant carbon source ( lactose and locust bean gum ) in the foundation culture medium ( mandels nourishment liquid ) of t. reesei rut c - 30, then proceeded the variable carbon source ( dragon spruce fiber, com rush pith fiber, wheat straw fiber, wheat straw xylan, corn rush pith xylan, dragon spruce mannan ) to single factor, double factor, three factor, four factor and five factor orthogonal experiment. 1 determined the activity of p - mannanase using locost bean gum as substract by the 3, 5 - dinitosalicylic acid method, and observed the growing situation of the gernic at the end i selected the directions for the inducement expression of the # ? mannanase from trichoderma reesei rut - c30 that contained the dragon spruce fiber, wheat straw xylan, dragon spruce mannan
在里氏木霉rutc - 30的基礎培養基( mandels營養液)中加入固定碳源乳糖和槐豆膠,然後將可變碳源(雲
杉纖維、玉米芯纖維、麥桿纖維、麥桿木聚糖、玉米芯木聚糖、雲
杉甘露聚糖)進行單因子、雙因子、三因子、四因子、五因子的里氏木霉rutc - 30正交培養實驗,並以槐豆膠為底物用3 , 5二硝基水楊酸法測定培養液中?甘露聚糖酶的活力。從而確定了酶活最高且菌體生長良好的含雲
杉纖維、麥桿木聚糖和雲
杉甘露聚糖的誘導培養基為最佳培養基,用該培養基培養的里氏木霉( t . reesei ) rutc - 30使其轉錄的-甘露聚糖酶( - 1 , 4 - mannanmannohydrolaseec3 . 2 . 1 . 78 ) mrna量
能夠滿足rt - pcr的要求。
He could not rank as yet with the magnates of the eastthe serried sequoias of wall street.
他還不
能夠同東部大王們華爾街林立的參天紅
杉並列。
It is that the masson pine has the highest hydrophilic properties and the chinese fir wood / plastics composites have the best water - resistant properties
因此,馬尾松一塑料復合材料的界面耐水性
能較差,而
杉木一塑料復合材料界面的耐水性
能較好。
Recent developments in molecular biotechnology are making this possible. in the work described here, three transgenic sublines of embryogenic norway spruce calli : a78 - 3, a78 - 4 and a78 - 5 were studied
隨著分子生物學技術的發展,通過轉基因技術有目的地培育出木質素含量低的挪威雲
杉新品種就成為可
能。
This film won the 2005 faif los angeles film festival audience awards for best short film and best film of festival, and sold out three screenings at the world famous mann s chinese theater in hollywood
該片贏得2005年faif洛
杉磯電影節最佳短片及最佳電影獎。他的演藝事業漸入佳境,在各大電視臺頻道時常
能看到他身影。
For five months he works on a great cedar tree, hewing and shaping it until it is seaworthy, only to find that it is so heavy he cannot get it from the construction site to the shore
五個月里他一直在對一棵巨大的
杉樹加工,將它砍鑿成形,直至
能夠下水航行,結果卻發現船身太重,無法從工地弄到岸邊。
In the control, even light rain could bring soil and water losses. while for orchard and costarica henryi forest, runoff and sediment yield both reduced greatly. regarding to chinese fir and enclosing and tending forests with favorable vegetative coverage, minimum soil and water losses were produced even by the rainstorm
裸露地(對照)小雨時也可
能產生水土流失,而大雨以上降雨會產生嚴重水土流失;具有一定植被覆蓋且採取水土保持措施的果園和錐栗林的徑流量和泥沙量大幅度減少;而植被覆蓋良好的
杉木林和封山育林地即使大雨以上降雨也僅產生極輕微的水土流失。
Research on buffer capacity of the soil to simulated acid - rain in china fir forest
杉木林土壤對模擬酸雨緩沖性
能的研究
Water resources conservation function of chinese fir plantation
杉木人工林水源涵養功
能研究
Effects of canopy interception on energy conversion processes in chinese fir plantation ecosystem
林冠截留在
杉木林生態系統
能量轉換過程中的作用
On the other hand, the research of " forests and water " is from the aspects of the eco - hydrological models of forest ecosystem from, the viewpoint of forest ecosystem and combining with the research on forest structure, function, productivity, energy and material circulation, to explore the laws and internal relation of various forest hydrological phenomenon is the basic topic of research
另一方面在祁連山水源林生態系統長期定位研究的基礎上,以祁連山青海雲
杉為代表運用森林生態學、森林水文學、生態經濟學、生態水文學等學科理論,通過建立單一因子的水文環境因子模型研究森林水文效應;從生態系統觀點出發,結合森林的結構和功
能以及生產力和系統
能量及物質循環的研究,揭示各種森林水文現象發生和發展的規律及其內在聯系。
The water - holding capacity of altinglia gracilipes, schima superba, fokienia hodginsii and cunninghamia lanceolata planted under cunninghamia lanceolata ecological public welfare forest was studied from forest canopy, shrub and herb layer, litter layer and soil layer
摘要分別從林冠層、林下植被層、凋落物層及土壤層對
杉木人工生態公益林林冠下營造的細柄阿丁楓、木荷、建柏和
杉木純林的持水功
能進行了研究。
Lin hsiang - yi points to two similar - looking barrels, then reveals that one is more than twice as expensive as the other. lin explains that juniper and fir have different characters, and what wood is best depends on the intended function. for example, bathtubs use juniper, but fir is good enough for a water barrel
林相林指著兩個看起來差不多的桶子,但價格卻相差兩倍以上,說明杉木與檜木的不同性質,得視桶子的功能來決定最佳材質,比如說,洗澡盆用檜木,留水桶用杉木即可。