The total flavanone of flocculus ' banyan fruit extraction and the identification by ultrasonic wave 超聲波提取小葉榕樹果總黃酮及鑒別
The flocculus steel balls measured were assembled in luoyang precise bearings company . the results show that the bearing vibration values reached z2 group near 98 % , the bearing vibration values with new technique balls tower above sixty percentile than grind technics . furthermore the bearing vibration values reached z3 group near 83 - 97 % , the bearing vibration values with new technique balls tower above 77 - 90 % than grind technics 然后對加工出的“絨面”鋼球在洛陽軸承集團(tuán)進(jìn)行了合套測振試驗(yàn),測振試驗(yàn)結(jié)果表明:振動(dòng)值達(dá)到z2組的比例達(dá)到98 ,比用研磨工藝制得的鋼球合套后測得的振動(dòng)值數(shù)據(jù)高出60個(gè)百分點(diǎn);振動(dòng)值達(dá)到z3組的比例高達(dá)到83 97 ,比用研磨工藝制得的鋼球合套后測得的振動(dòng)值數(shù)據(jù)高出77 90個(gè)百分點(diǎn)。
By making some assumptions , collision frequency were presented . then the the flocculation kinetics model was established through population balance equation . comparison of experimental data and modeling results indicate that there are the same trend between the two . so the model can predict floes number and size during flocculation of yellow river ' s loess particles without using empirical parameters . the tem and sem were used to obsever floes in the study of floe structure . the flocculation was divided as flocculi , floc and floe aggregate . the floes structure model was established by assumption that particles position in floe accords with tetrahedron . the fractal dimension of model and experimental floes was found to be coincidentso the model can reflect the structure of flocs formed in flocculation of yellow river ' s loess particles by macromolecule flocculant at a certain extent 最后,本文還對絮凝動(dòng)力學(xué)和絮體結(jié)構(gòu)進(jìn)行了研究,在前人研究的基礎(chǔ)上,針對高分子絮凝黃河泥沙,對絮凝過程作了一些符合試驗(yàn)條件的假設(shè),建立了顆粒碰撞頻率表達(dá)式,應(yīng)用了顆粒數(shù)量平衡方程,從而建立了絮凝過程的動(dòng)力學(xué)生長模型,模型計(jì)算結(jié)果與試驗(yàn)數(shù)據(jù)對比表明,二者趨勢一致,在沒有使用經(jīng)驗(yàn)參數(shù)的情況下基本上能夠描述黃河泥沙絮凝過程中絮體數(shù)量和尺寸分布的變化過程;對絮體結(jié)構(gòu)的研究中,應(yīng)用掃描電子顯微鏡和透射電子顯微鏡對絮體進(jìn)行了觀察,將絮體分為絮粒、絮團(tuán)和絮網(wǎng)三個(gè)不同的生長階段,通過假設(shè)顆粒結(jié)合位置符西安建筑科技大學(xué)博士學(xué)位論文合正四面體,建立了絮體結(jié)構(gòu)模型,計(jì)算得到的模型絮體分形維數(shù)基本與試驗(yàn)中的實(shí)際絮體相符,在一定程度上能夠反映高分子絮凝黃河泥沙生成的絮體結(jié)構(gòu)。
Secondly , the steel balls millstone is used to grind steel ball in ones steel ball factory , and process flocculus the steel balls that possess reticulate veins surface . measure the result as follows : ra ( surface roughness of steel ball ) = 0 . 015 u m , wavmess = 0 . 06 um , sph ( deviation from spherical form ) = 0 . 010 u m , vdwl ( variation of ball lot diameter ) = 0 . 015 u m 然后利用制成的鋼球研磨板對鋼球進(jìn)行超精磨削加工,加工出了表面具有網(wǎng)狀紋理形貌的“絨面”鋼球,利用儀器測量鋼球表面的粗糙度值達(dá)到了0 . 015 m ,表面波紋度值達(dá)到了0 . 006 m ,圓度達(dá)到了0 . 010 m ,球批直徑變動(dòng)量小于0 . 015 m 。
Many experiments indicate that flocculus steel balls possessing reticulate veins surface tend to elastic fluid kinetic lubricating layer and improves of the lubricating conditions of bearings . the bearings become quite , and have long life . therefore , in this paper we bring forward a new method to process flocculus steel balls possessing reticulate veins surface 而且許多實(shí)驗(yàn)表明:表面呈現(xiàn)網(wǎng)狀紋理形貌的“絨面”鋼球,有利于鋼球和套圈之間的點(diǎn)接觸區(qū)域形成全膜彈流潤滑層,使得軸承的潤滑狀態(tài)得到改善,從而實(shí)現(xiàn)軸承減振降噪和提高壽命的目的。
flocculusとは意味:{名} : (小脳{しょうのう}の)片葉{へんよう} flocculus meaning: Noun: flocculus A small lobe in the under surface of the cerebellum, near the middle peduncle; the subpeduncular lobe Encyclopedia: Flocculus flocculus en francais:n. petit floconflocculus перевод:1) клочок, пучок; хлопья 2) _анат. флоккулус, выступ на поверхности мозжечка 3) _энт. концевой пучок волос (на брюшке) 4) _астр. флоккул