For electrodeposition by dc methods, the metals deposite uninterrupted and the particles were also embeded uninterrupted into the coatings ; for electrodeposition by pc method, the particles with biggish volume were desorbed from the coatings and returned to the electrolyte again owing to the presence of pulse interval ; for electrodeposition by prc method, the particles carried positive charges are much more easy to desorb from the coatings owing to the effecf of reverse pulse current combined with pulse interval, in addition, the reverse pulse current also could dissovle the metals, further accelerates the desorption of particles, thus the particles size embeded in the coatings by prc method is the least
直流電沉積時,基質金屬的沉積連續進行,粒子在電極表面不間斷嵌入鍍層;單脈沖電沉積由於脈沖間歇的存在使得具有較大體積的粒子會脫附,重新回到
溶液中;採用周期換向脈沖時,反向脈沖電流使表面荷正電的較大的粒子更易從電極表面脫附,同時,反向脈沖電流對基質金屬的
溶解作用,也會促進粒子的脫附,因此鍍層中復合粒子尺寸最小。隨著鍍層中粒子復合量的增加,三種鍍層的晶粒都明顯細化,說明al _ 2o _ 3的存在阻止了晶粒的長大,提高了電沉積過程中晶
核的形成速率。
The research of gibbs free energy, critical nucleus radius, nucleation rate of homogeneous nucleation " and heterogeneous nucleation shows that the main reason decreasing solution stability is heterogeneous nucleation
通過分析非均相成
核與均相成
核的臨界成
核半徑、臨界晶
核形成功、成
核速率等,說明降低
溶液穩定性的主要因素是非均相成
核。
Microbiology of food and animal feeding stuffs - horizontal method for the detection and enumeration of listeria monocytogenes - part 1 : detection method - amendment 1 : modification of the isolation media, of the haemolysis test and inclusion of precision data
食品和動物飼料的微生物學.單
核細胞增生性利斯特氏菌檢測和計數的水平方法.第1部分:檢測方法.修改件1 :隔離介質和
溶血試驗的改進並包括精確數據
Through the analyzing the macro - structure to micro - structure, the author considers that retarding mechanism of citric acid is that citric acid and ca in the gypsum form the complexant ion, and hinder the crystallization center of dihydrate crystal bigger ; that of sodium tripolyphosphate is that it combined with ca, hinders the dissolve of hemihydrate. formation and growth of crystallization center ; that of bone glue is the glue - protection and chemical absorption action of active group, which also retards the formation and growth of crystallization center
通過宏觀到微觀的分析,筆者認為,檸檬酸的緩凝作用的原因主要在於檸檬酸與鈣形成絡合離子,影響了二水石膏晶體的晶
核長大過程;多聚磷酸鈉與鈣形成某種復鹽,對于石膏晶體的
溶解、成
核和長大過程均有強烈的阻礙影響;骨膠則在於膠體對半水石膏的包裹和活性基團的化學吸附,使二水石膏晶體的成
核和長大困難。
Expression of thermostable direct hemolysin gene of vibrio parahaemolyticus in e. coli and activity of expressed product
副
溶血性弧菌直接
溶血毒素基因的原
核表達及產物的性質
The nuclear membrane invaginates and lysosomes are internalized.
核膜內陷,於是
溶酶體被內在化。
Many nuclei have become pyknotic ( shrunken and dark ) and have then undergone karorrhexis ( fragmentation ) and karyolysis ( dissolution )
細胞
核固縮(縮小和深染) ,接著
核碎裂(形成碎片)和
核溶解(
溶解消失) 。
Ultrastructurally, karyopyknosis and karyolysis occured in lymphocytes, and the mitochondria, rough endoplasmic reticulum of lymphocytes in the immune organs were damaged. the nucleus were deformity, the rmtochondrial and rough endoplasmic reticulum were swelling, and the ribosomes were shed in reticular cells of thymus in zinc - deficient ducklings
超微結構顯示缺鋅組淋巴細胞
核固縮或
溶解,線粒體、粗面內質網受損;胸腺網狀細胞
核受損,粗面內質網擴張,線粒體腫脹、嵴斷裂。
Activation of lymphocytes and liver regeneration both involve perinuclear clustering of lysosmes.
淋巴細胞的激活以及肝臟的再生都與
溶酶體在
核周的集聚有關。
They are likely to lyse rather than to form stable polykaryons.
它們可能自
溶而不會形成穩定的多
核體。
After reproduction of the viral nucleic acid the host cell usually undergoes lysis ( lysogeny )
病毒
核酸復制后寄主細胞通常要經歷裂解過程(
溶源狀態) 。
Only prokaryotes, such as bacteria, lack lysosomes.
只有細菌這樣的原
核生物才沒有
溶酶體。
Summary background data : soluble receptor proteins derived from the macrophage - monocyte lineage potentiate the inflammatory cytokine response early in ap
背景資料:從單
核巨噬細胞系來源的可
溶性受體蛋白可能是急性胰腺炎早期的炎癥細胞因子。
Nuclear energy. technology of nuclear fuel cycle. determination of neptunium in nitric acid solutions by molecular absorption spectrophotometry
核能.
核燃料循環技術.分子吸收分光光度法測定硝酸
溶液中的鎿
At the end of the nucleation process micellar soap should no longer be present in solution.
當成
核過程完了時,
溶液中應不再有膠束存在。
With the increase of concentration of aqueous extract from peganum multisectum increased, root vigor, the contents of chlorophyll, soluble protein and nucleic acid in roots and shoots of alfalfa seedlings decreased, while the activities of protease and nuclease, the contents of o2 ( superscript - ), h2o2 and malondiadehyde ( mda ) increased, the activities of superoxide dismutase ( sod ), catalase ( cat ) and peroxidase ( pod ) first increased and then decreased
幼苗根系活力和葉綠素、可
溶性蛋白質、
核酸含量隨水浸液濃度的提高而降低,蛋白酶和
核糖
核酸酶活性及超氧陰離子( o2 (上標- ) ) 、 h2o2和丙二醛( mda )含量則增加,超氧化物歧化酶( sod ) 、過氧化氫酶( cat )和過氧化物酶( pod )活性呈先升后降變化。
Complications of chemonucleolysis include diskitis and sensitivity reactions , including an 0. 5 % incidence of anaphylaxis
化學核溶解法的並發癥有椎間盤炎及過敏反應,包括0 . 5 %的過敏休克的發生率。