As a result,the ray tracheid inner wall has sawtooth thickening obviously.The pit of cross field is windows and pine shape.The ratio of the tracheid length to width is about 50.Airdry density is about 598kg/m3.The shrinkage of difference is about 1.8;1%NaOH extraction and cell...

結果表明：紫杉木材射線管胞內(nèi)壁鋸齒狀加厚明顯，交叉場紋孔多為窗格狀中文字幕激情小说，偶爾為松型黄色网站性无码在；管胞的長寬比平均值約為50，氣干密度平均為598kg／m3日韩一级欧美一级精品视频，差異干縮約為1.8国产精品狼人久久久久影院直播；1％NaOH抽出物、乙醚抽出物成人网站免费在线播放、纖維素含量較落葉松高亚洲欧美一区二区欧美亚洲A，木素含量比落葉松低，其它化學指標與落葉松相近影音先锋不鲁321资源网。

After treated by alkaline peroxide, the extractive in jack pine TMP long fiber decreased evidently, its surfaces produced large numbers of carboxyl. The H2O2 dosage in AP treated process had evident effect on brightness of sheet. The action of alkali in AP process is to make structure of cell wall loose.

堿性過氧化氫處理 TMP長纖維組分能明顯降低漿中抽出物含量超鹏一级黄色视频，纖維表面產(chǎn)生大量的羧基；過氧化氫用量的變化對白度影響較為明顯狼友网站在线观看；堿的作用是使細胞壁結構變得松弛香港性生活视频，隨著用堿量的增加，抽出物含量明顯降低，羧基含量大幅度增加男人下面无遮挡，纖維表面O/C比也略有增加一级二级片，各項強度均增加。2欧美一级大黄片免费。

RFAs in the first refiner pulps were not dispersed into the water phase proportionally,and much smaller amount of abietic acid was released.

結果發(fā)現(xiàn)黄色网站毛片儿，木片擠壓機的擠壓作用對抽出物組分幾乎沒有選擇性，基本按照原木片中抽出物的比例釋放出來最新日韩午夜在线电影网站观看。

Result Under the pretreatment conditions, the content of acetone extractives transformed. The hydroxyl and carboxyl, belonging to auxochromic groups, were oxidized into the carbonyl and ester groups. Also, there were plenty of auxochromic groups and chromophoric groups in the acetone extractives of silver chain.

結果］刺槐在預處理條件下，丙酮抽出物成分發(fā)生了變化国产美女免费作爱视频99，羥基伊人久久精品中文字幕无码、羧基等助色基團在預處理條件下氧化成羰基、酯基等發(fā)色基團国产黑丝足交视频，且丙酮抽出物的主要成分中含有大量發(fā)色基團和助色基團普通话熟女高潮对白视频。

The paper carries on qualitative analysis to the acetone extractives before and after discoloring, shows the main components of the extractives and then takes comparison. The results shows :①The hydroxyl is oxidized and then shifted to the carbonyl,carboxyl, ester and ketone groups during inducing discoloration under the pretreatment conditions,which makes the wood color deep;② There are plenty of auxochromic groups in the acetone extractives of silver chain, the interaction between the auxochromic groups and the chromophoric groups makes the wood color deep.

摘 要：本文通過對刺槐變色前后丙酮抽出物的定性分析，得出變色前后丙酮抽出物的主要成分黄色网站爱观赏，進行對比分析艳情视频一区，初步得出抽出物對誘發(fā)變色的作用為：①變色前后羥基在預處理條件下氧化成羰基，羧基日韩不卡毛片午夜在线看片,，酯基和酮基等官能團肥熟女视频一区二区三区，使木材顏色加深；②刺槐丙酮抽出物的主要成分中含有大量助色基免费黄a片在线观看，這些基團會與木素中的發(fā)色基團相互作用欧美性爱一区在线观看，使木材顏色加深。

In results, with the growing of L.kaempferi, the total carbohydrate decreases, water extractives including cold water extractives and hot water extractives increase, and 1%NaOH extractives also increase; glucosan and xylan decrease, however, galactosan increases.

結果表明：隨著樹齡的增大男人插女人之男人的天堂，原料中碳水化合物含量逐漸降低亚洲色图在线综合；冷水抽出物、熱水抽出物和1%NaOH抽出物含量增加99这里只有精品首页。

The results showed that the ash content and the contents of cold water and hot water and benzyl ethanol extractives of Albizia falcataria are lower than that of Gmelina arborea, the contents of lignin and cellulose of Albizia falcataria is similar to that of Gmelina arborea. On the other hand, the contents of 1%NaOH extractive and hemicellulose of Albizia falcataria are higher than that of Gmelina arborea.

結果表明国产尤物第一区第二区精品，南洋楹的灰分、冷熱水抽出物和苯-醇抽出物含量低于石梓亚洲中文字幕无码乱线，Klason 木素和纖維素含量兩者相當黄色免费在线网站网址，但是南洋楹的 1％ NaOH 抽出物和戊聚糖含量明顯高于石梓。

Additionally, the water fraction from wood extract can inhibit the root growth on Pak-choi. At 1000 μg/mL, after 72 h, the length ratio of root to shoot was 0.69, and the dry weight of Pak-choi root was only the 20.6% of control. But the extracts of Sapindus mukorossi have no influence on the growth of Pak-choi with normal growth 7 days.

此外澳门欧美性爱aⅤ视频，木材抽出物之水分離部則具有抑制胚根生長的作用www.黄欧美，經(jīng)濃度1，000 μg/mL處理72 h之小白菜www,欧美精品视频,com，胚根與胚莖長比值為0.69日韩高清自拍区视频在线观看，且其胚根乾重僅為對照組的20.6%，但無患子抽出物對正常生長7天后之小白菜并無顯著抑制生長作用。

MethodThe qualitative analysis to the acetone extractives of silver chain wood before and after discoloring was carried on showing the main components of the acetone extractives and then taking comparison.

方法］通過對刺槐木材變色前后丙酮抽出物的定性分析国产视频福利，得出變色前后丙酮抽出物的主要成分国产网站免费，進行對比分析，初步得出抽出物對誘發(fā)變色的作用特级性交毛片。

Through research and analysis of data, it was observed that the length and width of bark fiber varied according to the lop and age, the results show the fiber of the Salix bark is longer than the Salix and width of fiber almost same, fiber length of the Salix bark mainly influenced by the times of lop. The ash in Salix bark,1% Sodium Hydroxide Solubility in Salix bark, water solubility in Salix bark, Ethanol-Toluene in Salix bark, acid-insoluble lignin in Salix bark changed with the lop and age is also been investigated, the component of Salix bark is higher than Salix except acid-insoluble lignin,and it's high effected by times of lop; the TG analysis and DSC analysis is been used on the Salix bark and Salix to study the character of the hot-action, and the rang of the pyrogenate temperature is confirm; the quantity of Salix bark effect on the MOR, MOE, swelling in 24h water, nail withdraw and inner strength was determined, the results show that the Salix bark notability effect on the properties of board and dropped it; the properties of the Salix bark board is nearly the board product by other bark residues, it was established the multi regression equation of each properties and optimized the fitting produce condition of Salix bark board.

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