木素化

Six novel dihydrobenzofuran and benzofuran neolignans compounds(1～6) were synthesized by knoevenagel reactiton,esterfication, biomimetic oxidative coupling ,DDQ dehydrogenation,reduction and hydrolysis with 4-hydroxybenzaldehyde and malonic acid as starting material.

以对羟基苯甲醛和丙二酸为原料，经Knoevenagel缩合反应，酯化、仿生氧化偶联、DDQ脱氢、还原和水解等反应步骤，合成了6种未见文献报道的苯并二氢呋喃新木脂素和苯并呋喃新木脂素类化合物(1~6)。

Effect of extrusion - expansion on extraction of soybean genistein was studied.

研究挤压膨化对大豆染料木素提取效果的影响，在单因素及响应面试验的基础上。

The two—step sulfomethy lation and the reaction with HOCH〓SO〓Na in sulfite cooking were illustrated in this paper. The optimum technological conditions were determined on the basis of suitable amount of HCHO in sulfite pulping. The differences of delignification and paper properties of wheat straw were also studied in SFP—AQ and alkaline sulfite and AQ cooking .

对麦草粉的两步法磺甲基化反应以及与羟甲基磺酸钠的反应进行了研究，解释了甲醛在亚硫酸盐蒸煮中脱木素作用机理，从理论上确定了甲醛在SFP—AQ蒸煮中的适宜用量，并据此提出了合理的蒸煮工艺和最佳工艺条件。

The basic structural motive of alkali lignin is similar with phenol, containing phenol-carbonyl, alcohol-carbonyl, metonym and other active groups, and it can set off a reaction of carbonyl modification.

碱木素基本结构单元分子类似于苯酚，含有酚羟基，醇羟基，甲氧基等活性基团，可以发生羟甲基化等改性反应。

III. Studies on the total synthesis of macrophllin type of bicyclo[3, 2, 1] octanoid neolignans ( C-4': endo ) The first total synthetic route of macrophllin type of bicyclo[3, 2, 1]octanoidneolignans ( C-4': endo ) was established based on the rearrangement ofbenzofuranoid and bicyclo[3, 2, 1]octanoid neolignans.

三、Macrophllin型双环[3，2，1]辛烷类新木脂素(C-4'桥环为endo)的全合成研究利用氢化苯骈呋喃类新木脂素和双环[3，2，1]辛烷类新木脂素的重排关系，首次建立了macrophllin型双环[3，2，1]辛烷类新木脂素(C-4'桥环为endo)的全合成路线。

Although the rising of cooking temperature and extension of heat preservation time will facilitate the delignification, it will also reinforce the damage to carbon compound, as well as low the pulp yield, hardness, intensity and bleachability.

但蒸煮温度的提高和保温时间的延长，虽有利于脱木素，但也加剧对碳化后物的损害，因此，成浆得率低硬度小物理强度小漂率也低。

Lignin based polyurethane films were prepared by solution casting from hydroxypropyl lignin derivatives and hexamethylene diisocyanate or toluene diisocyanate.

以羟丙基化木素和甲苯二异氰酸酯或六亚甲基二异氰酸酯为原料，采用溶液流延法制备了聚氨酯。

Influence of Plant Growth Regulator on the Germination Percentage and Seedling Growth of Lolium perenne L .;3. Detection and Quantification of the Endophyte in Lolium perenne L .

由于碱木素中胶体分子有带电的核和溶剂化外壳，构成亲水基因，从而具有一定的表面活性，掺入混凝土中能起一定的减水效应。

The results of spectrum analysis show that, the absorption of sulfite cooking liquor during 460nm-580nm visible wavelength mainly comes from sulphonated lignin while saccharide and water in cooking liquor has little.

通过对亚硫酸盐和硫酸盐纸浆卡伯值光谱法在线测量机理的研究发现，亚硫酸盐法蒸煮液在460nm-580nm的可见光波段内的吸收主要是来自其中的磺化木素。

On the basis of the Zeolite catalyst which is fit to lignin methylolation had been synthesized. Its elemental composition formula is (1～5) M〓: Al〓O〓:(1～10) SiO〓:(0～10) H〓O (M represents an exchangeable cation, n represents the valance of cation), the pore diameter is among 3～13〓.

在此基础上合成出了适合木素羟甲基化反应的沸石催化剂，其化学组成通式为（1～5）M〓∶Al〓O〓∶（1～10）SiO〓∶（0～10）H〓O（M指一种可交换的阳离子，n为阳离子的价数），孔径在3～13〓间。

And Pharaoh spoke to Joseph, saying, Your father and your brothers have come to you.

47：5 法老对约瑟说，你父亲和你弟兄们到你这里来了。

Additionally, the approximate flattening of surface strip using lines linking midpoints on perpendicular lines between geodesic curves and the unconditional extreme value method are discussed.

提出了用测地线方程、曲面上两点间短程线来计算膜结构曲面测地线的方法，同时，采用测地线间垂线的中点连线和用无约束极值法进行空间条状曲面近似展开的分析。