active substrate 中文意思是什麼
active substrate
解釋
有源襯底-
Racemization is found with optically active substrate substrates.
發現旋光基質有外消旋作用。 -
Protein engineering and site directed mutagenesis have been used to change the active site and alter the substrate specificity of various hydroxynitrile lyases
研究人員已經利用蛋白質工程和定點突變技術來改變各種醇腈酶的活性位點和底物特異性等。 -
Hydantoinase ( ec 3. 5. 2 ) hydrolyzes its substrate 5 ' - monosubstantial hydantoin to enantiomerical n - carbamyl - amino acids and in turn, the resulting product can be chemically or enzymatically converted into the corresponding optically active amino acids
海因酶（ hydantoinase ， ec3 . 5 . 2 ） ，是一類催化海因、 5 』 -單替代海因及其衍生物環酰胺鍵斷裂的酰胺水解酶。 -
In view of the poor adhesion of ultraviolet - curing paints to metal substrate, the effect of prepolymer, active diluent, adhesion accelerator, curing process and pretreatment on the adhesion of coating to metal substrate was studied
針對紫外光固化塗料存在與金屬基體附著力差的問題，通過試驗研究了塗料組分與工藝過程如預聚體、活性稀釋劑、附著促進劑、固化工藝及預處理對塗膜在金屬基體上的附著力的影響。 -
Microelectronic circuits in which the passive components and their metallic interconnections are formed directly on an insulating substrate and the active semiconductor devices ( usually in wafer form ) are added subsequently
一種微電子電路器件，其中的無源元件及內部金屬連線直接在絕緣襯底上形成，然後再加上有源半導體器件（通常以大圓片形式給出） 。 -
In bioconversion of a d - amino acid and its derivative, the substrate, 5 ' - monosubstituted hydantoin is firstly transferred into an intermediate, d - carbamyl amino acid by d - hydantoinase, and in turn into an optically active d - amino acid by either d - carbamoylase or chemical, nano2. nowadays, the bioconversion of d - amino acids has been industrialized by enzymes, so called one - step process
D -型氨基酸及其衍生物的生物轉化，經歷兩個反應歷程，首先是在海因酶的作用下，催化5 -單替代海因形成氨甲酰類氨基酸中間物，後者再在酶或化學的作用下，生成相應的光學活性氨基酸或其衍生物。 -
The enzyme was purified from cell extract by ammonium sulfate fractionation ( 30 % - 80 % saturation ) and consecutive column chromatography using deae - cellulose and sephadex g - 100. the sod activity for purified enzyme could reach 4966 iu / mg proteins, and the molecular weight of the sod was about 20 kda which determined by sds - page electrophoresis. when the non - denaturing polyacrylamide gel stained with substrate for sod in the present of 0. 2mmol / l kcn or 0. 5 mmol / l h2o2, the active band was still showed at the same position, which indicated the sod could not be inhibited by the treatments with kcn or h2o2 and it was the mn sod
通過sds一聚丙烯酸胺凝膠電泳可知該sod酶的分子量約為20kda .在非變性聚丙烯酞胺凝膠（ pagb ）電泳后，在凝膠son顯色反應液中加入0 . 2耐01 / lkcn或0 . 5inmol / lh202 ，凝膠sod顯色反應后在原來的sod酶部位仍然含有sod活性帶，這表明利用kcn和h20 :處理並不能抑制500的活性，該sod屬于mn一sod 。 -
The metal ion may be the catalytic center of the cofactor, or it may serve to bind the enzyme and substrate together to hold the enzyme in a catalytically active conformation
金屬離子可以是輔助因素的催化中心，也可以幫助形成酶活性所必須的構象。 -
2 ) sbd was made using zno thin film as the active layer, which is a first time attempt. - 2 - a ) first time, high c - axial orientation zno thin film was deposited on al membrane supported on si substrate
A ）利用磁控濺射技術，首次在si襯底上，以金屬al做過渡層制備具有高c軸取向的zno晶體薄膜。 -
The catalytic center of an enzyme is composed of a set of amino acids whose three - dimensional arrangement forms the “ active - site ” that allows them to efficiently bind and modify the substrate
酶的催化中心是由一組氨基酸組成，其三維結構形成活性位點，允許它高效地結合或修飾底物。 -
A monolithic microwave integrated circuit ( mmic ) is a microwave circuit in which the active and passive components are fabricated on the same semiconductor substrate. mmic, having advantages of small size, light mass, high reliability and excellent reproducibility, finds use in a variety of microwave system, especially in airborne radar and space applications
單片微波集成電路（ mmic ）是將有源元件和無源元件都集成在同一個半導體襯底上的微波電路；具有尺寸小、重量輕、可靠性高、生產重復性好等優點，廣泛應用於各種微波系統，特別是機載雷達和衛星通信等方面。 -
The dominance and properties of the cmos integrated reference were also described, and the research meaning was pointed out. related device theory and process model used in design were described. the temperature related model and the influencing factor of two active devices, subthreshold mosfet and pnp substrate transistor, based on cmos process were analyzed and compared, and pointed out that the pnp substrate transistor was more fit for being the temperature compensating device for bandgap reference
闡述了設計中相關的器件理論與工藝模型，對cmos工藝下的兩種有源器件，即亞閾值工作狀態下的金屬場效應晶體管（ mosfet ）及襯底pnp雙極型晶體管（ bjt ）的溫度模型及其影響因素進行了分析和比較，指明襯底pnp雙極型晶體管更適合作為基準源的溫度補償元件。 -
The active site consists of amino acids arranged in a configuration specific to a particular substrate or type of substrate
構成酶活性部位的這些基團由於肽鏈的盤繞折疊使它們在空間結構上彼此靠近，形成具有一定空間結構的區域。
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