莰

Under suitable conditions, the conversion of α-pinene reached 98% and the selectivity of camphene reached 63%.

在适宜的工艺条件下，α-蒎烯的转化率为98%以上，莰烯的选择性达到63%。

The result showed that whether the trace water was toomuch or too less,the conversion rate of pinene would decrease,while the changeof the selectivity of camphene was not obvious.

结果表明：反应体系中的微量水过多或者过少，都会降低蒎烯转化率，但对莰烯的选择性影响不大。

The experimental results showed that the catalyst had better catalytic activity and selectivity. The main product of the isomerization reaction was camphene, and the byproducts were limonene, terpinolene and tricyclene etc.

该催化剂具有较好的催化活性和选择性，异构化反应的主产物是莰烯，副产物是苎烯、异松油烯、三环烯等。

Camphene is widely applied to synthesize spice and medicament asimportant chemical material.At present,the main source of camphene is theisomerization of turpentine which is abundant in Guangxi Province.

莰烯是重要的化工原料，广泛应用于香料合成、药物合成等领域；目前莰烯的主要来源是松节油的异构化，而广西盛产松节油。

Raney nickel catalyst was used in hydrogenation of the turpentine and c-pinane,t-pinane,camphene and isocamphane and some other monoterpane s were determined.

用雷尼镍为催化剂对松节油进行了加氢实验，获得顺蒎烷、反蒎烷、莰烷、异莰烷等单萜烷类化合物，采用气相色谱"反吹、微流控"技术的色谱-质谱分析方法，测得了它们的保留时间和质谱图，为进一步研究原油或抽提物轻馏分中单萜烷类化合物的地球化学意义提供了一些基础性数据。

Isobornyl methacrylate ; Ion exchgange resin ; Methacrylic acid ; Camphene ; Kinetics

甲基丙烯酸莰醇酯；离子交换树脂；甲基丙烯酸；莰烯；反应动力学

The results were as follows:Afterthe NH_4Y zeolite was dealuminated with Oxalic acid,the conversion of pinenespeeded up markedly, but the selectivity of camphene also dropped downmarkedly.After the NH_4Y zeolite was infused in solution of Mg(NO_3)_2,Zn(NO_3)_2 or Al(NO_3)_3 to remove corresponding oxide,the conversion rate of pinenedropped down,and the selectivity of camphene had little increase.

结果表明：NH_4Y型沸石分子筛经草酸脱铝后，蒎烯转化显著加快，但莰烯的选择性也显著下降；而NH_4Y型沸石分子筛经硝酸镁、硝酸(来源：caAB3aC论文网www.abclunwen.com)锌、硝酸铝溶液浸渍来负载相应的氧化物后，蒎烯转化率有所下降，莰烯选择性稍有增加。

The results were asfollows:When the ratio of HY zeolite to raw material was 2.5g/100mL and thereaction was heated to 140℃for 4h,the effect of isomerization of turpentinewas better, the conversion rate of pinene was 97.02%,and the selectivity ofcamphene was 42.88%.When the ratio of HZSM-5 zeolite to raw material was4.5g/100mL and the reaction was heated to 140℃for 4h,the effect ofisomerization of turpentine was better, the conversion rate of pinene was86.24%,and the selectivity of camphene was 46.95%.

结(来源：A45BC论ba文网www.abclunwen.com)果表明：HY型沸石分子筛催化，当其用量为2.5g／100mL原料，反应在140℃下维持4h时，松节油的异构化效果较好，蒎烯转化率达97.02％，莰烯选择性为42.88％；而HZSM-5型沸石分子筛催化，当其用量为4.5 g／100mL原料，反应在140℃下维持4h时，松节油的异构化效果较好，蒎烯转化率达86.24％，莰烯选择性为46.95％。

The result showed that there was significant botanical character difference among the three varieties of rosemary; the content of essential oil of Rosmarinus officinalis L is higher than that of Rosmarinus officinalis 'Rex' and Rosmarinus officinalis 'Wood' with 0.80, 0.46 and 0.40 mL(100g)^(-1)FW respectively;α-pinene、1,8-cineole、verbenone、geraniol and borneol were the main compositions of essential oil from Rosmarinus officinalis L, with 27.26%, 20.92%, 11.75%, 5.92% and 5.07% respectively; the major components of essential oil of Rosmarinus officinalis 'Rex' were 1,8-cineole、camphor、borneol、α-pinene and camphene, accounting for 31.07%, 21.66%, 11.98%, 5.36% and 5.34% respectively; in Rosmarinus officinalis 'Wood', camphor、1,8-cineole、bornyl acetate、borneol、α-pineneand camphene were the major compositions with 24.69%, 23.96%, 6.76%, 5.94%, 5.80% and 5.28% respectively.

结果表明：三种迷迭香的植物学性状，如外形、花色等差异显著；迷迭香的精油含有率较高，为0.80mL(100g)^(-1)FW，Rex迷迭香和Wood迷迭香的精油含有率低，分别为0.46和0.40mL(100g)^(-1)FW；迷迭香的主要成分为α-蒎烯27.26%、1，8-桉叶素20.92%、马鞭烯酮11.75%、香叶醇5.92%、龙脑5.07%等，Rex迷迭香精油中1，8-桉叶素31.07%、樟脑21.66%和龙脑11.98%、α-蒎烯5.36%、莰烯5.34%是其主要成分，Wood迷迭香精油的主要成分为樟脑24.69%、1，8-桉叶素23.96%、醋酸龙脑酯6.76%、龙脑5.94%、α-蒎烯5.80%和莰烯5.28%等。

Result: Five flavonoids and two coumarins were isolated from Phellinus igniarius and their structures were identified as naringenin, sakuranetin, aromadendrin, folerogenin, eriodictyol, coumarin and scopoletin.

结果 ：从桑黄中分离鉴定了 5个黄酮和两个香豆素类化合物，分别为柚皮素、樱花亭、二氢莰非素、7 甲氧基二氢莰非素、北美圣草素、香豆素及莨菪亭。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐