The 20S catalytic core of the 26S proteasome has the shape of a barrel made of four rings which are composed of seven differentαsubunitsα_1-α_7 at two outer rings and seven differentβsubunitsβ_1-β_7 at two inner rings at which the catalytic sites locate. Three of theβsubunits contain proteolyses sites, which are sequestered in the hollow interior of the 20S particle. Substrates enter the 20S through a narrow channel formed by theβsubunits, whose N-termini, depending on their conformation, can either obstruct or allow substrate entry and thus function as a gate. This entry channel is narrow and only permits passage of unfolded, linearized polypeptides.

哺乳動(dòng)物26S蛋白酶體是由一個(gè)20S催化顆粒(catalytic particle性生活爱爱网址，CP)和兩個(gè)19S調(diào)節(jié)顆粒(regulatory particle欧美一級性愛視頻，RP)組成的ATP(adenosine-triphosphate国外一区二区三区黄色录像，ATP)依賴性蛋白水解酶復(fù)合體手机一级在线视频。20S CP是26S蛋白酶體的催化核心，它是由4個(gè)圓環(huán)堆疊形成的桶狀復(fù)合物在线观看黄片精品，其中兩側(cè)外環(huán)每個(gè)環(huán)是由α_1-α_7亞基組成视频欧美日韩，兩個(gè)內(nèi)環(huán)每個(gè)環(huán)是由β_1-β_7亞基組成，4個(gè)環(huán)的中央形成一個(gè)狹窄的內(nèi)腔成年女人特黄av免费。2個(gè)β內(nèi)環(huán)形成了20S CP的催化中心空腔中文字幕av人妻一本二本，其內(nèi)壁為催化活性位點(diǎn)所在地；外側(cè)α環(huán)中心的孔道是底物到達(dá)催化中心空腔的通道800av.com在线免费看，一般被α亞基上的N末端所封閉91人妻论坛社区，阻止胞內(nèi)非目的靶蛋白進(jìn)入20S CP內(nèi)被降解破壞。

The mechanism of modified Catalysts treating leachate through microwave catalytic oxidation showed that, for those rich in granular organic matters, microwave catalytic oxidation attains good pretreatment effect, while for those rich in dissolved organic matter, the effluent attained the municipal wastewater effluent standardsⅢafter treated; Molecular weigh cutting experiments showed that the removal efficiency of organic matter changes disproportionally with different molecular weight.

單目標(biāo)物質(zhì)催化劑的機(jī)理分析表明18污视频网站在线免费观看，以空氣為氧化劑時(shí)精品久久国产精品99国产，Ni-O/CeO_2催化劑的催化效能高于以Fe-O/CeO_2催化劑的催化效能；以H_2O_2為氧化劑以Fe-O/CeO_2催化劑的催化效能高于Ni-O/CeO_2催化劑的催化效能美女裸体视频久久；微波催化氧化反應(yīng)與常溫常壓催化氧化反應(yīng)和水浴催化氧化反應(yīng)相比大大縮短了反應(yīng)時(shí)間国产在线一区无码视频久、提高了反應(yīng)效率。

Selective doping has been proved to be a semiconductor oxide improve the photocatalytic activity of the most effective ways The introduction of certain metal ions can greatly improve the photocatalytic oxidation efficiency, Recently, a lot on the adoption of the doping to improve the photocatalytic oxidation performance reports, doped semiconductor photocatalysis material because of its physical and optical properties change, thereby improving the photocatalytic properties.

有選擇性的進(jìn)行摻雜已被證明是一種提高半導(dǎo)體氧化物光催化活性的極其有效的方法很很操很很爆操爆视视，摻入一定的金屬陽離子能極大的提高TiO2的光催化效率亚洲国产精品三区第一次，最近有大量的關(guān)于通過摻雜來提高TiO2的光催化性能的報(bào)道，摻雜的半導(dǎo)體光催化材料由于其物理和光學(xué)性質(zhì)的改變黄片四区，通過擴(kuò)展光響應(yīng)范圍和提高光生電荷的分国产精品视频拍自网站，從而提高了光催化性能。

It was found that the samples PVP-PdCl2-CdCl2 and PVP-PdCl2-HgCl2, compared with PVP-PdCl2, exhibited much higher catalytic activity and dechlorination selectivity, and the yields of the coupling by-products were obviously decreased. For example, when p-chloroaniline was used as substrate, the reaction time was shortened to 1/8, and the yield of dechlorination product was about 25 times as much as the original one, and when p-chlorotoluene was used as substrate, the yield of coupling by-product catalyzed by bimetallic catalyst was 1/390 of that catalyzed by monometallic catalyst.

與負(fù)載型單金屬催化劑PVP-PdCl2相比欧美一级做片性视频， PVP-PdCl2-CdCl2和PVP-PdCl2-HgCl2對(duì)氯代芳烴脫氯有高得多的催化活性和脫氯選擇性影音先锋日韩在线资源，且偶聯(lián)副產(chǎn)物顯著減少；以對(duì)氯苯胺為底物時(shí)欧美日韩在在线视频，雙金屬催化下的反應(yīng)時(shí)間縮短為單金屬催化下的1/8中文字幕日本黄色视频，而脫氯產(chǎn)物收率提高25倍；底物為對(duì)氯甲苯時(shí)天天插天天碰，雙金屬催化下的偶聯(lián)副產(chǎn)物僅為單金屬催化下的1/390欧美激情a片免费专区。

The TiO2 synthesized by normal and reverse micelles as templated were applied for phot ocatalytic of Rhodamine B and organic toxic small molecule 2.4-dichlorophenol under ultraviolet irradiation. Oxidation species and photodegradation products in the photoreaction process were detected for studying their photocatalyst properties. The results showed that: the R-TiO2 had a better photocatalysis property under UV irradiation when photodegradation of RhB and DCP compared to the N-TiO2. After 160min, the mineralized rate of RhB can be 95%. And the oxidative species was mainly referred to OH radical.

利用正相和反相膠束介質(zhì)模板制備的納米TiO2為光催化劑，在紫外光照射下人人爱人人操人人摸人人干人人爱，對(duì)染料羅丹明B和有機(jī)有毒無色小分子291超碰在线中出，4-二氯苯酚進(jìn)行光催化降解，研究了其光催化性能亚洲欧美国产一区二区，并對(duì)光催化過程中氧化物種及降解產(chǎn)物進(jìn)行了跟蹤測(cè)定月综合网，結(jié)果表明，反相膠束模板體系制備的納米TiO2與正相膠束介質(zhì)制備的納米TiO2比較黄色网站黄页，在紫外照射下對(duì)RhB及DCP的降解有較好的光催化性能欧美极品A片小视频在线看，對(duì)RhB在160min尤催化礦化率可達(dá)95%美女张开腿被弄到高潮视频，光催化反應(yīng)主要的氧化物種涉及在基自由基。

Generally, the main point of this thesis rests with exploring novel hydrothermal methods to synthesize functional stannate composite oxides nano-materials, and studying the formation and morphology controlled mechanism of the composite oxides nano-materials under hydrothermal conditions. The main research achievements are summed up as follows:(1)According to the testing needs of photocatalytic hydrogen-generation, we have designed and set up a suit of photocatalytic H2-generation equipments with external light irradiation.

本文正是在這一背景條件下久久一级黄色毛片，重點(diǎn)研究以水熱法合成錫酸鹽納米光催化材料黄色毛片免费看永久，并對(duì)合成出的樣品進(jìn)行了細(xì)致的表征分析，初步研究納米材料的光催化活性视频日韩午夜在线播放网站免费，探索納米催化劑的顆粒尺寸91后入国产在线、形貌和晶體結(jié)構(gòu)對(duì)催化性能的影響規(guī)律，其內(nèi)容主要包括以下幾個(gè)方面：(1)根據(jù)光催化制氫的需要97.riav，設(shè)計(jì)并組建了一套外置光源照射的光催化制氫裝置美女a视频网站。

The Schiff base transitional metal complexes of various structures and their metallomicelles as peroxidase models for the phenol and phenolic derivant oxidation have been investigated. Some results are obtained from the studies:(1) the Schiff base transitional metal complexes have high catalytic activity for the phenol and phenolic derivant oxidation, and the structure of the complexes has a great effect on its catalytic activity;(2)a novel kinetic mathematical model for the complexes and their metallomicelles catalyzing the phenolic derivant oxidation has been established;(3) the feasibility and mechanism for the phenolic derivant oxidation catalyzed by the metallomicelle(as the mimetic model of peroxidase)have been discussed.

研究了冠醚Schiff堿金屬配合物作為過氧化物酶的模擬模型對(duì)酚類物質(zhì)氧化反應(yīng)的催化作用，取得如下結(jié)果：(1)幾種冠醚Schiff堿金屬配合物對(duì)催化酚類物質(zhì)氧化具有良好的催化活性精品一区在线播放，其中配體結(jié)構(gòu)對(duì)其催化活性有較大的影響中国老女人老妇女刺激视频；(2)建立了金屬配合物與表面活性劑形成的金屬膠束催化酚類物質(zhì)氧化反應(yīng)的動(dòng)力學(xué)數(shù)學(xué)模型；(3)探討了金屬膠束模擬過氧化物酶催化酚類氧化反應(yīng)的可行性及其機(jī)理性感带AV电影在线免费观看。

The results showed that (1) The grain size of nanometer YiO_2 was40～80nm.The wavelength corresponding to the maximum absorbency values were observedin the 200～320nm range.The crystal structure of carbon doped TiO_2 photocatalyst is primarilyanatase(22.43% rutile), and the content of carbon is about 4.6%.(2) The relative humidityvaring from 8% to 80%, the photocatalytic degradation degree of benzene increased withincreasing relative humidity; and to toluene, degradation rate was hanced by relative humidityup to 60%, and more or less inhibited above 60%.(3) Scheme and results of orthogonal testswere used by evaluating the photocatalytic performance of the gas phase methanol, acetoneand 1-heptane.The results revealed that their degradation degree reached 84.5%, 93.39% and93.45%, respectively.(4) The 254nm UV lamp showed higher photocatalytic degradation rate.For methanol, acetone and 1-heptane, it was found that photocatalytic degradation reactionoccurs with the light strength of daylight lamp.(5) Under the the same conditions, 15%degradation degree has been obtained for benzene, whilst about 10% degradation degree wasattained by Degussa P25; During the initial phases, the toluene revealed higher photocatalyticactivity, comparing with Degussa P25, the degradation degree of methanol, acetone and1-heptane were slightly lower.

結(jié)果表明：(1)CVD法制備的納米TiO_2光催化劑久久久二级黄色片，顆粒球形度好、粒徑在40～80nm之間在线免费91；最大吸光度值所對(duì)應(yīng)的波長(zhǎng)為200～320nm四虎国产精品久久久久久网址；含碳量約為4.6％；晶型組成主要為銳鈦礦型欧美精品熟妇，金紅石的含量約為22.43％玖玖爱在线视频播放；(2)在相對(duì)濕度為8％～80％范圍內(nèi)，苯的光催化降解率隨著相對(duì)濕度的增大而增大国外呦交网站；甲苯在相對(duì)濕度為60％時(shí)達(dá)到最好降解效果嗯啊太深了视频，當(dāng)相對(duì)濕度增大到80％時(shí)光催化效果降低；(3)將正交實(shí)驗(yàn)設(shè)計(jì)及實(shí)驗(yàn)方案應(yīng)用于氣相甲醇久久久精品国产自在看、丙酮和正庚烷光催化降解研究www.99re6.com，實(shí)驗(yàn)結(jié)果表明：三者最高降解率分別為84.5％、93.39％和93.45％性交配网站；(4)有254nm紫外燈參與的光催化實(shí)驗(yàn)可以大大提高有機(jī)氣體的光催化降解率丝袜人妻欧美；在日光燈的照射下，摻碳納米TiO_2對(duì)氣相甲醇女人张开腿男人猛桶视频、丙酮和正庚烷具有一定的光催化氧化能力丁香婷婷五月天综合；(5)較P25粉，在相同的光催化操作條件下：氣相苯的平均降解率達(dá)15％新黄页在线观看，高于P25粉10％的降解率毛片a片一级片；氣相甲苯在初始階段具有較高的反應(yīng)速率；氣相甲醇成人综合网在线播放网站、丙酮和正庚烷的降解率略低于P25粉4438黄色网。

Study result suggest: The change of stock in RFCCU directly affect gasoline content. Gasoline content can be reduced through increasing the equilibrium activity of catalyst, controlling reaction level, increasing recirculating rate of gasoline and stability of gasoline level. Conclusions drawn from experiment is that optimization of operating condition has great effect on lowering olefine content of gasoline which can be reduced from 60% to 50%.Reducing reaction temperature is useful for lowering olefine content of gasoline, when the reaction temperature is raised, thermal cracking rate is higher than catalytic cracking rate, so that olefine content is increased. Raising catalyst-to-oil ratio is good for lowering olefine content. With conversion rate increased, the yield of LPG and coke is raised, the yield of gasoline is increased firstly and then decreased slightly, hydrogen transfer index is increased, so the olefine content is decreased.

研究結(jié)果表明：催化裂化裝置的原料的變化直接影響到催化汽油的烯烴含量欧美视频欧美性爱；可以通過優(yōu)化催化裝置的操作條件來降低催化汽油中的烯烴含量，其中通過提高催化劑平衡活性人妻专区、控制反應(yīng)深度、增加汽油回?zé)捔抗园產aa、汽油深度穩(wěn)定可以降低催化汽油烯烴含量伊人国产精品，優(yōu)化工藝條件對(duì)降低催化汽油烯烴含量有較大作用，汽油烯烴含量由60％降至50％左右日本黄色视频久久久；降低反應(yīng)溫度有利于降低催化汽油的烯烴含量亚洲日韩精品无码专区网站，當(dāng)反應(yīng)溫度的提高，熱裂化反應(yīng)速度提高的幅度大于催化裂化反應(yīng)速度提高的幅度免费一级性爱片，汽油烯烴含量增加和孕妇疯狂作爱视频；劑油比的提高有利于降低催化汽油的烯烴含量，轉(zhuǎn)化率提高亚洲黄色网址大全，液化氣產(chǎn)率提高欧美色综合天天综合高清网，汽油收率先增加后略有下降，焦炭產(chǎn)率增加亚洲欧美日韩91AV，氫轉(zhuǎn)移反應(yīng)指數(shù)提高黄片ah视频，汽油烯烴含量下降；反應(yīng)時(shí)間對(duì)產(chǎn)品分布及汽油烯烴含量有影響欧美日韩a在线，增加提升管反應(yīng)時(shí)間中文字幕第页日，液化汽、汽油產(chǎn)率提高欧美国产欧美日韩，干氣和焦炭產(chǎn)率增加wwwxxxx黄色。

The following main results are obtained: The TiO_2 photocatalyst with small crystallite size, high surface area, narrow and uniform pore size distribution, and microporous frameworks could be prepared out by applying MW radiation in the preparation process. The microwave-induced fluorescence technique verified for the first time that microwave enhanced the formation rate of hydroxyl radical, leading to the increase in the photocatalytic efficiency. Compared with the conventional catalyst, TiO_2 prepared by MW dielectric heating owns a higher UV absorption ability, and its optical absorption edge and photovoltaic response are shifted toward the short wavelength region, resulting in increase of photooxidation efficiency. The photocatalytic conversion and the mineralization ratio of acetaldehyde are increased respectively by 30% and 40% over the TiO2 prepared by MW radiation when compared to the TiO2 prepared by the conventional heating. For the MW-assisted photocatalytic reaction over the MW-prepared TiO2, production of hydroxyl radicals is enhanced by 22.5%, and the photocatalytic conversion is accordingly increased by 20%. Similarlly, applying MW also increased the photocatalytic conversion and the mineralization ratio of acetaldehyde over TiO2/Al2O3 sample.

論文得到如下主要結(jié)果和結(jié)論：(1)微波介電加熱TiO_2 溶膠可得到晶粒度小、光催化活性高尹人手机在线视频、比表面積大和孔徑分布窄而均一国产黄色无码，且微孔發(fā)達(dá)的TiO_2光催化劑；在溶膠干燥處理過程中微波可使催化劑表面缺陷增加99玖玖玖精品国产，進(jìn)而導(dǎo)致光催化反應(yīng)過程有更多的活性羥基自由基產(chǎn)生国产精品对白交换；(2)微波制備能顯著增強(qiáng)TiO_2 樣品的紫外光吸收率，并使其光吸收和光伏響應(yīng)閾值發(fā)生藍(lán)移国产特级毛片无码专区，從而提高TiO_2的氧化還原能力亚洲爆乳AAA无码专区；(3)與常規(guī)加熱法所制TiO_2比較，微波法制備的TiO_2對(duì)乙醛的光催化降解轉(zhuǎn)化率提高30%欧美老妇乱子BBBBBBBW，CO_2生成率提高40%以上精品射；(4)與未加微波輻射時(shí)相比，發(fā)現(xiàn)在光催化反應(yīng)過程中施加微波在线视频亚洲，TiO_2 的羥基自由基生成速率提高了22.5%亚洲一级av一级无码毛片，相應(yīng)CH_3CHO 光催化降解轉(zhuǎn)化率提高了20%永久免费AV无码动漫网站在线观看；對(duì)Al_2O_3/TiO_2催化劑，CH_3CHO 光催化降解轉(zhuǎn)化率甚至提高了33%免费黄色视频醉网址，同時(shí)CO_2 的生成率也都大幅度提高免费看a在线；(5)微波輻射可改變光催化降解乙醛的產(chǎn)物分布，推斷施加微波時(shí)乙醛光催化降解按照羥基自由基引發(fā)的鏈?zhǔn)椒磻?yīng)機(jī)理進(jìn)行国内自拍AV在线，微波&非熱效應(yīng)&起主要作用91九色偷情自拍视频。

catalytic afterburner：催化補(bǔ)燃室

catalytic activity | 催化活性 | catalytic afterburner | 催化補(bǔ)燃室 | catalytic alkylation | 催化烴化

catalytic aromatization：催化芳化

catalytic analysis 催化分析 | catalytic aromatization 催化芳化 | catalytic combustion 催化燃燒

catalytic aromatization：催化芳構(gòu)化

catalytic alkylation 催化烴化 | catalytic aromatization 催化芳構(gòu)化 | catalytic chromatography 催化色譜

catalysis：催化

自從1836年由瑞典化學(xué)家Berzelius提出催化(catalysis)概念以來,催化科學(xué)和技術(shù)取得了長(zhǎng)足進(jìn)步,成為現(xiàn)代工業(yè)文明得以實(shí)現(xiàn)的重要基石之一. 事實(shí)上,催化技術(shù)是化學(xué)工業(yè)和石油化學(xué)工業(yè)的最核心技術(shù). 例如,80%以上的化學(xué)工業(yè)涉及催化技術(shù),

Heterogeneous Catalysis：多相催化(催化劑與反應(yīng)物處于不同相如在固體和流體相界面間發(fā)生催化作用)

glass delivery tube 玻璃導(dǎo)管 | heterogeneous catalysis 多相催化(催化劑與反應(yīng)物處于不同相如在固體和流體相界面間發(fā)生催化作用) | homogeneous catalysis 均相催化(催化劑與反應(yīng)物在同相中反應(yīng))

Catalytic cracking：催化裂化

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catalytic chromatography：催化層析法;催化層析術(shù)

"catalytic carrier","催化載體;觸媒載體" | "catalytic chromatography","催化層析法;催化層析術(shù)" | "catalytic coefficient","催化系數(shù)"

catalytic subunit：催化亞單位, 催化亞基

catalytic site | 催化部位 | catalytic subunit | 催化亞單位, 催化亞基 | catalytic tower | 催化反應(yīng)塔

autocatalytic：自催化

一般文獻(xiàn)上把化學(xué)鍍貴金屬分成三種類型,即置換(galvanic displacemat)、自催化(autocatalytic)及基體催化(substrate catalytic). 這種分類方法顯然不夠完善,因一般的化學(xué)氐是專指自催化過程. 置換法是很容易與后兩種催化過程相區(qū)別,

katalysis：催化作用

首次對(duì)催化現(xiàn)象進(jìn)行總結(jié),并給了一個(gè)新的術(shù)語"催化作用"(Katalysis)的是瑞典化學(xué)大師J.J.貝采里烏斯,這一術(shù)語,一直到今天在科學(xué)上仍然使用它. 50-60年代初,魏茨(P.B.Weisz)等提出了分子篩晶內(nèi)催化和擇形催化作用. 在此順便指出,