氮的同位素 的英文怎麼說
中文拼音 [dàndetóngwèisù]
氮的同位素
英文
isotopes of nitrogen-
The understanding of biogeochemical cycle of hydrogen, oxygen, carbon, nitrogen, and sulfur elements in nature ecosystem have increased substantially in the past two decades owing to the improvement of gas isotope ratio mass spectrometer and the wide application of isotopic studies with these elements
摘要近20年由於氣相同位素比值質譜儀的改良和氫、氧、碳、氮和硫等穩定同位素的廣泛研究，穩定同位素的研究技術已實質增加我們對于這些元素在自然生態系中生地化循環的了解。To let more domestic relevant researchers understand the applicable techniques of stable isotopes, this article not only introduces the principles of isotopes measurements by gas isotope ratio mass spectrometer, but also integrates the experiences of hydrogen, oxygen, carbon, nitrogen, and sulfur isotopes in agriculture and environmental applications that were described in papers
為讓國內更多相關研究人員了解穩定同位素技術的可利用性，本文描述氣相同位素比值質譜儀之分析原理，及整理氫、氧、碳、氮和硫等同位素在農業及相關生態環境研究上應用的文獻。Based on the analysis of the data of carbon nitrogen isotopes and trace elements such as sr, ba ca et al. of the two pieces of excavated human bones of late period of dawenkou culture and period of chunqiu and zhanguo in upper shu river in shandong province, the research applied the analysis of carbon nitrogen isotope and trace elements into the study of ancient diet
摘要本研究通過對山東沐河上游大汶口文化晚期及春秋戰國時期2塊人骨的碳、氮同位素分析和無機成分的掘、鋇、鈣等微量元素分析，探討了同位素和微量元素分析在古代人類食物結構研究中的應用問題。We have interpreted in the same way the production of radioactive elements in boron and magnesium in the first an unstable nitrogen with a half life of 11 minutes is produced, and in the second, unstable isotopes of silicon and aluminum
我們還用同樣的方式解釋了在硼和鎂中製造放射性元素的過程：首先製造一種半排出期為11分鐘的不穩定的氮，然後製造不穩定的硅和鋁同位素。When inadequate n was added, the chloroplast structure in mesophyll cell was damaged in ear leaf, the amount of carbohydrate decreased in mestome sheath, and excessive n - redistribution and n - transportation to grain from vegetative mass appeared, which resulted in earlier leaf senescence. excessive n application led to too high activity of nitrate reductase, excessive vigorous nitrogen metabolism and too much exhaustion of carbohydrate in ear leaf, which resulted in the lack of enough carbohydrate in the lower leaf, meanwhile, the expansive chloroplast grana lamellae in leaf mesophyll cell and starch grain without nuclear in mestome sheath cell was observed, which led to the decrease of chlorophyll content and photosythetic capacity in maize leaf, then the early senescence occured
氮肥用量不足導致穗葉葉肉細胞葉綠體結構性差，維管束鞘細胞碳水化合物累積減少，營養體氮素再分配率大而引起葉片早衰；而過量供氮則導致生長後期硝酸還原酶活性過高，氮素代謝過旺，消耗了大量碳水化合物，以致下位葉不能得到充足的碳水化合物供應而提早脫落，同時葉肉細胞葉綠體片層結構膨脹，呈「肉汁化」特徵，維管束鞘細胞澱粉粒大量消耗，無核澱粉粒出現，從而葉片葉綠素含量下降，光合能力降低而出現早衰。A team led by stanford university scientists reconstructed dietary sources of recent and ancient condors by measuring carbon and nitrogen isotope concentrations in feather and bone remains
由史丹佛大學科學家所率領的小組，測量了禿鷹遺骸的羽毛及骨骼中，碳及氮同位素的濃度，而重建了古今禿鷹的食物來源。Analyzing archaeological remains of bone and hair for their abundances of the stable isotopes of carbon and nitrogen ( carbon 13 and nitrogen 15 ) can provide information about a person ' s diet
從考古遺址出土的遺骸，分析骨頭、毛發中碳13 、氮15等穩定同位素的豐度，可以得到有關飲食的資訊。We suggest that new technologies such as the c and n isotope technique for nutrient cycling and the image analysis approaches for soil micro - structure should be applied on earthworm ecological research in order to better understand the functions of earthworms
其他新技術如研究養分循環的碳氮同位素分析和揭示土壤微結構的圖像分析等技術的應用是蚯蚓生態功能研究的迫切需要。分享友人