Distribution of phosphorus species in sediments of maricultural waters in Sandu Bay

研究了三都澳网箱养殖海域沉积物中总磷(TP)及P的5种不同形态的分布特征,探讨了这些P的形态分布与水产养殖之间的相互关系。结果表明,表层沉积物中TP含量为(243.57~722.73)×10-6,其中无机磷(IP)含量在(217.36~609.94)×10-6,占TP的66.8%~89.2%,有机磷(OP)含量在(6.20~113.92)×10-6,占TP的10.8%~33.2%。TP及各形态P含量的高值都出现在青山岛和斗帽岛之间、三都岛南岸及礁头—城澳北岸等大黄鱼养殖海域,低值出现在非养殖区,显示养殖活动对底质P的形态分布已有明显影响。The distribution characteristics of total phosphorus and the five species of phosphorus in the sediments from the cage mariculture areas of Sandu Bay were investigated.The relationship between the distribution of species of phosphorus and aquaculture were discussed.The results showed that the contents of total phosphorus in the surface sediments ranges from 243.57×10~(-6) to 722.73×10~(-6),and that of inorganic phosphorus from 217.36×10~(-6) to 609.94 ×10~(-6),to be 66.8%～89.2% of total phosphorus.The contents of organic phosphorus from 26.20×10~(-6) to 113.92×10~(-6),to be 10.8%～33.2% of total phosphorus.The higher contents of total phosphorus and five forms of phosphorus appeared to be in the mariculture areas of Pseudosciaena Crocea,which are between Qinshang Island and Doumao Island,south of Sandu island and north coast of Jiaotou-Cheng'ao,while the lower contents appeared to be in the non-mariculture areas.It shows that the distribution of species of phosphorus were significantly effected by the mariculture activities.国家自然科学基金资助(40106007);; 福建省自然科学基金重大项目资助(2001F001

茉莉酸甲酯對紅檜葉子揮發成分含量之影響

紅檜為台灣特有樹種，木材具有極佳的耐久性並具特殊的香味。為瞭解紅檜葉子的揮發性成分組成，本研究除利用水蒸氣蒸餾法製備精油外，並利用固相微萃取技術收集葉子的揮發性成分，續以氣相層析質譜鑑定成分。此外，本研究並以茉莉酸甲酯模擬葉子受到機械創傷或是昆蟲、真菌的侵害後，其揮發性成分的變化。由分析結果可知，共108種紅檜葉子之化合物被鑑定出，在揮發性成分中以α-Pinene為最主要成分，佔30.29%，而在精油中則是以β-Myrcene為主成分，佔22.45%。紅檜葉子在茉莉酸甲酯處理後，其揮發性成分之釋出量大幅提高，揮發量為未以茉莉酸甲酯處理的葉子的1.92倍；而在茉莉酸甲酯處理後對於時間上的影響上，在施加10 mM茉莉酸甲酯經過5 hr後，其揮發量增加最多，之後揮發量就開始減少。Chamaecyparis formosensis is an endemic tree grown in Taiwan. The durability of C. formosensis wood is excellent and with fragrance odor. In order to analysis the volatile compounds of C. formosensis, in addition to the essential oil of leaves was prepared by water distillation, the solid phase micro extraction technology was also conducted to collect the compounds emitted from leaves. Moreover, the leaves of C. formosensis were treated by methyl jasmonate (MeJA) to mimic it wounded or attacked by fungus or insects. According to the results obtained in our study, totally 108 compounds were identified from C. formosensis, the amount of α-Pinene is 30.29% is the most dominant compound in the volatile compound emitted from leaves; however, β-Myrcene (22.45%) is the most dominant compound in the essential oil. After MeJA treatment, the amount of volatile compound was increased to 1.92-fold. Meanwhile, we also found that the amount of volatiles would reach to the highest concentration after 5 hr treatment at the dosage of 10 mM MeJA

Effects of insulin pumpertraining and its evaluation

目的介绍胰岛泵素师培训情况及评价培训效果。方法通过课堂集中授课、临床实训等方式,对33名学员进行系统培训,以《中国胰岛素泵治疗护理管理规范》为蓝本开发了教材,并以理论考试、实践操作考试及调查问卷形式评价该次培训效果。结果调查问卷显示,学员对胰岛素泵的相关知识掌握较好,对培训的满意度高。87.9%的学员通过了笔试,97.0%的学员通过了操作考试,操作考试成绩高于笔试成绩。结论胰岛素泵师培训增加了学员的胰岛素泵相关理论知识,提高了学员对胰岛素泵应用的理论与实践能力。</p

Anatase TiO2&#160;activated by gold particles for selective

Anatase TiO2&#160;activated by gold particles for selectiv

Selective Hydrodeoxygenation of Guaiacol to Phenolics by Gold and Silver Activated Anatase TiO2

Selective Hydrodeoxygenation of Guaiacol to Phenolics by Gold and Silver Activated Anatase TiO

~(17)N破裂反应产物的测量

利用RIBLL提供的丰中子放射性束测量了17N在197Au和9Be靶上的破裂反应 .用 1 4单元阵列探测器测量得到了前角带电粒子产额和关联粒子对的破裂截面 ,得到了17N在197Au和9Be靶上的带电粒子破裂截面比为 4— 5倍 ,结果表明对重靶核除了核破裂机制外还要考虑库仑破裂的贡