sensitive metal 中文意思是什麼

The order of four soil biochemical intensity being sensitive to heavy metal pollution indicated as : nitrification > nitrogen fixation > decomposition of cellulose > ammonification. however, soil microbial biomass c : n ratio increased with the increasing of heavy metals level

幾種生化作用強度的下降順序為硝化作用固氮作用纖維素分解強度氨化作用；但土壤微生物生物量碳氮比則隨著重金屬污染水平的升高而增加。

The recombinants were constructed by transforming ppic9 a - xynb into p. pastoris gs115. the assay results revealed that the xylanase gene xynb was overexpressed and secreted effectually in p. pastoris. in 3l fermentor the expression level of xylanase xynba exceeded 1200iu / ml and the expressed xylanase had normal bioactivity. the molecule weight of xynba was determined as about 31kd which is higher than 23kd of original enzyme xynb from streptomyces olivaceoviridis a1. xynbb was gotten by deglycasylation of xynba, whose molecule weight returned to 23kd. we comparised the enzymatic properties of xynba expressed in p. pastoris, xynbb deglycasylated from xynba and xynb produced from streptomyces olivaceoviridis al : there was little difference among the three enzymes on optimal ph, the optimal ph of xynb and xynba were both 5. 2, the optimal ph of xynbb was 5. 0 ; the optimal temperature of xynb and xynba were both 60 c, while the optimal temperature of xynbb was 50 ? ; because of glycosylation the thermal stability of xynba was better than xynb and xynbb ; the specific activity of xynba and xynbb were 883. 88iu / mg and 832. 5hu / mg respectively, which were both lower than 2814. 45iu / mg of xynb ; the km values of xynb and xynba were similar to each other which were 21. 56 ( g / kg ) and 20. 87 ( g / kg ), while the km value of xynbb was 27. 10 ( g / kg ) ; the fmax of xynba and xynbb were 4568umol / mg. min and 5329umol / mg. min respectively which were lower than 27623 umol / mg. min of xynb ; additionally all of the three enzymes did not display cellulase activity. they all had well resistance to pepsion and trypsin, and were not sensitive to metal iron, surface active agent and chelating agent. the analysis of different xylans enzymatic hydrolysate revealed : by xynba, that the main constitutions of enzymatic hydrolysate of birch wood xylans were xylotriose and xyloquaiose, which account for 68. 43 % and 16. 50 % respectively, additionally there was 11. 79 % of xylobiose ; the main constitutions of enzymatic hydrolysate of corncobs xylans were xylobiose and xylotriose, which account for 81. 78 % and 11. 55 %. the result indicated that this xylanase was a kind of 1, 4 - b - d - xylanohydrolase and was fit to used in industrial procession of xylooligosacc harides

進一步對xynba進行了脫糖基化處理得到xynbb ，其分子量恢復到23kd ，證明xynba是糖基化蛋白。通過對畢赤酵母重組表達的木聚糖酶xynba 、脫糖基化的木聚糖酶xynbb以及橄欖綠鏈黴菌a1所產原酶xynb之間酶學性質的比較發現：三種酶的最適ph差異不大， xynb和xynba均為5 . 2 ， xynbb為5 . 0 ； xynb和xynba的最適溫度均為60 ， xynbb降為50 ：在耐熱性上， xynba由於糖基化作用熱穩定性明顯高於未糖基化的xynb和xynbb ； xynba和xynbb的比活性分別為883 . 88iu mg和832 . 51iu mg ，明顯低於原酶的比活2814 . 45iu mg ； xynb和xynba的km值相當，分別為21 . 56 （ g kg ）和20 . 87 （ g kg ） ，而xynbb的km值較大為27 . 10 （ g kg ） ； xynba和xynbb的vmax相差不大，分別為4568 mol mg ? min和5329 mol mg ? min ，明顯低於xynb的27623 mol mg ? min此外三種酶均無纖維素酶活性，對胃蛋白酶和胰蛋白酶有很好的抗性，且對作用環境中的各種離子、表面活性劑、螯合劑不敏感。通過對不同木聚糖的酶解產物的糖份分析發現：以樺木木聚糖為底物時，酶解產物主要為木三糖和木四糖，含量分別為68 . 43和16 . 50 ，另外還含有11 . 79的木二糖；以玉米芯木聚糖為底物時，酶解產物主要為木二糖和木三糖，含量分別為81 . 78和11 . 55 。

Competition reaction shows that znpbmt - is formed while lead ion and zinc ion bind competitively to apomt - ; however, apomt - s metal binding sites are all took up by lead ion, which means apomt - is more sensitive to lead ion than apomt -

競爭結合apomt -形成的是金屬混配的金屬硫蛋白而apomt -的金屬結合位點則完全被pb

Like average amphibians, with its naked skin of no protection by leather and fur, the tree frog is very sensitive to environment pollution by heavy metal, chemicals and acid rain

樹蛙和一般兩棲類一樣，皮膚裸出，沒有毛皮的保護，所以對生活環境中重金屬、農藥與酸雨等污染十分敏感。

Adopted antistatic and metal shell is safety for soldering sensitive component

機身採用高度可靠的全金屬防靜電模式，焊接敏感組件更安全。

The new sensitive materials deposited on laps with electron beam thermal evaporation meet the requirements for fabricating miniaturised sensor devices and can be employed in environmental control such as detection of heavy metal ions

在最後，我們提出了基於硫屬玻璃薄膜laps的新結構和新的測量方法，並進而提出我們對laps在海水重金屬檢測應用中可能的發展方向。

The trace heavy metal determination instrument is a kind of instrument which combines the method of using ise and isfet microsensors based on a sensitive chalcogenide glass with the method of the stripping voltammetry to determinate the trace metals in seawater

船載海水重金屬元素現場自動分析儀是一種聯合離子選擇性電極檢測技術和溶出伏安檢測技術自動檢測海水中痕量重金屬元素的儀器。

Influence of metal catalyst on characteristics of co gas sensitive thin film based on density functional analysis

氣敏薄膜特性影響的密度泛函法分析

Temperature sensitive metal

熱敏金屬

A five - phase numerical model based on prism coupled is derived from maxwell equation and fresnel equation. using the professional software - mathcad, characteristic of this numerical model is simulated. the relationships between depths of the metal film, bio - sensitive film, cover slide, the refractive index of bio - sensitive film and the resonant angle ospr has been discussed respectively

根據maxwell方程和fresnel方程推導出5層棱鏡耦合spr數值化模型，利用數學軟體mathcad對該數學模型進行了模擬，討論了金屬膜厚度d _ 2 、生物膜厚度d _ 3和折射率n _ 3 、載玻片厚度d _ 1與諧振峰值_ （ spr ）的關系。

An continuous example magnetic levitation systems are widely used in various fields shch as highspeed maglev passenger trains, levitation of wind tunnel models, vibration isolation of sensitive machinery, levitation of molten metal in induction furnaces

磁懸浮系統廣泛應用於不同的領域，如高速磁力客車，風道懸浮模型，敏感器械的震動分離，機械製造中的金屬板懸浮（ barie & chiasson ， 1996 ） 。

Cadmium is a heavy metal with obvious chronic toxicity and is mast sensitive to genital system

摘要鎘是一種具有慢性毒害的重金屬，生殖系統對其毒性最敏感。