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The anodic oxidation reactions of borohydride ion involves a novel and complex reaction system of three hydrogen valence states: protide H(superscript --protium H(superscript 0*-proton H(superscript +. Based on cyclic voltammetry and polarization studies, a multi-step mechanism for the oxidation of BH4-on Cu anode in NaOH solution was presented, and a kinetic expression containing the coverages of BH(superscript - subscript 4) and OH-adsorbed on the surface of Cu anode was deduced by the steady state approximation theory.

鑒于BH(上標(biāo)-下標(biāo) 4)陽極氧化反應(yīng)涉及一個復(fù)雜的氫負(fù)離子H(上標(biāo)-下標(biāo) 4)－氫單原子H(上標(biāo) 0*)－質(zhì)子H之間價(jià)態(tài)轉(zhuǎn)化的新穎反應(yīng)體系亚洲欧美另类久久图片，在循環(huán)伏安和極化實(shí)驗(yàn)研究基礎(chǔ)上伊人黄色电影一级，提出了NaOH溶液中BH(上標(biāo)-下標(biāo) 4)在Cu電極上氧化反應(yīng)的多步驟機(jī)理日韩午夜在线资源精品视频观看网址，導(dǎo)出了包含表面吸附態(tài)BH(上標(biāo)-下標(biāo) 4， ad)和OH覆蓋率θ和θ的電極反應(yīng)動力學(xué)方程欧美性爱精品在线视频。

The results indicate that the synthesized sphene has a good chemical durability in the aqueous solution whose pH value is 5-9, the temperature and pH of the solution have important influences to its chemical durability in 1-21 days.

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Results of grafting trial shows: the budding survival rate on hybrid UCB-I was higher commonly than that on the Pistacia atlantica Desf; On two rootstocks, one-year-old branch performed better than twoyear-old stem; In mid August, the highest budding survival rate was attained with two rootstocks; After treatment with 50、100ppm IBA and 50ppm 6-BA, the budding survival rate on hybrid UCB-I was decreased, but the budding survival rate on Pistacia atlantica was increased evidently, particularly it has been increased 22. 8％ by treatment of 100ppm IBA.

阿月渾子嫁接試驗(yàn)結(jié)果表明：在雜種UCB-I上的芽接成活率普遍高于在大西洋黃連木上的芽接成活率国内偷窥一区二区三区视频；兩種砧木一年生枝上的芽接成活率均高于二年生主干上的芽接成活率大秀免费人成网站在线视频；8月中旬在兩種砧木上的芽接成活率均最高；用50A片中文在线免费、100ppm IBA和50ppm 6-BA處理接芽后日韩一区二区三区欧美，均可顯著提高大西洋黃連木上的芽接成活率，尤其100ppm IBA處理可提高其嫁接成活率22.8％欧美性色精品视频二区，但上述處理都降低了在UCB-I上的芽接成活率禁止十八岁以下观看的黄色网站。

The results are unsure for experimental use;The rabbit's corneas that were removed with upper-half of corneal limbal epithelium lamella and erased the center corneal epitheliums were transparent with intact corneal epithelium;In the approach,the corneal and limbal epitheliums were burned with a cotton swab socked in 1 mol/L NaOH,there were 4 rabbits' corneal stroma happened perforation or ulcer and symblepharon,and the other one presented corneal epithelium phenotype.This is an applicable method to create the pathological model of corneal limbal stem cell total deficiency.

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The matrix =( xi, xjp having the e-th power of the greatest common P-divisorp of xi and xj as its-entry is called the e-th power GCD matrix on S. The matrix = having the e-th power of the least common P-multiple p of xi and xj as its-entry is called the e-th power LCM matrix on 5. We obtained the following results:(1) is nonsingular for any set S;(2) If S is an FC set, then the determined of has formula Det =Jpe(x1)...Jpe, where the function Jpe is the generalized Jordan totient function;(3) A formula of the inverse of is given when S is an FC set;(4) If S is an FC set, then |.

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objective to evaluate efficacy of extracorporeal shock wave lithotripsyfor treating ureteral stones in situ,investigate the cause of higher re-treatment rate.methods total of 687 patients with ureteral stone were received eswl between january 2000 and december 2004,included 455 male(66.2%) and 232 female(33.8%) patients,6 cases have bilateral ureteral calculi,12 cases have unilateral multiple calculi.hence,together 709 ureteral calculi were treated.patients upper ureteral calculi were treated in the supine position,for lower ureteral calculi patients were turned prone.to reduce eswl-induced renal trauma and pain,using lower energy source,adjusted power setting from 9.8 to 13.2kv,limited 1500 shock wavs per one session.no auxiliary procedure were used before eswl.the stone size was measured as the surface area of stone length by stone width on x-ray film.the interval between two treatment sessions was two weeks.results of 709 ureteral calculi,the overall stone free rate was 97.3%(690 calculi),re-treatment rate was 34.1%(292 calculi).according to the performed treatment sessions,one session 467 calculi,the mean stone size 37.27mm2,stone free rate 65.4%(464 calculi).two sessions 138 calculi,the mean stone size 62.48mm2,stone free rate 18.4%(131calculi).three sessions 52 calculi,the mean stone size 79.60mm2,stone free rate 7.1%(50calculi).four sessions 19 calculi,the mean stone size 101.63mm2,stone free rate 2.4%(17calculi).fivesessions 33 calculi,the mean stone size 119.33mm2,stone free rate 3.9%(28 calculi).overall 19 cases(2.7%)turned to other treatment modalities.of 335 upper ureteral calculi,303 achieved stone free (95.8%),re-treatment rate was 38.5%(129 calculi).of 374 lower ureteral calculi,369 achieved stone free(98.7%),re-treatment rate was 30.2%(113 calculi).the re-treatment rate of upper ureteral calculi was higher than lower ureteral calculi(p＜0.05,χ2=5.40).the difference of stone-free rate between upper and lower ureteral calculi was no significant(p＞0.05,χ2=0.15).conclusion eswl should be considered first line therapy for ureteral stone still.stone burden are the main variable of higher re-treatment rate,upper ureteral stone may moving with respiring during eswl.so efficinet shock wave was decreared,re-treatment rate become higher.

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The angels offer Thee a hymn; the heavens a star, the Magi, gifts; the shepherds, their wonder; the earth, its cave; the wilderness, the manger: and we offer Thee a Virgin Mother.

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