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| 1 | Analysis of Carbon Functional Groups in Mobile Humic Acid and Recalcitrant Calcium Humate Extracted from Eight US Soils显示文摘Solid state13C nuclear magnetic resonance(NMR)spectroscopy is a common tool to study the structure of soil humic fractions;however,knowledge regarding carbon structural relationships in humic fractions is limited.In this study,mobile humic acid(MHA)and recalcitrant calcium humate(CaHA)fractions were extracted from eight soils collected from six US states and representing a variety of soils and ecoregions,characterized by this spectroscopic technique and analyzed for statistical significance at P≤0.05.We found that the abundances of COO and N–C=O functional groups in the MHA fractions were negatively correlated to soil sand content,but were positively correlated to silt,total N and soil organic carbon contents.In contrast,the abundances of the COO and N–C=O functional groups were only positively correlated to the content of clay in the CaHA fractions,indicating that the two humic fractions were associated with diferent soil components.The two13C NMR peaks representing alkyls and OCH3/NCH were negatively correlated to the peaks representing aromatics,aromatic C–O and N–C=O/COO.Comparison of the sets of data from13C NMR spectroscopy and ultrahigh resolution mass spectrometry revealed that the aromatic components identified by the two methods were highly consistent.The comparison further revealed that protein in MHA was associated with,or bound to,the nonpolar alkyl groups,but a component competitively against(or complementary to)aromatic groups in the MHA composition.These observations provided insight on the internal correlations of the functional groups of soil humic fractions. | HE Zhong-Qi CAO Xiao-Yan MAO Jing-Dong T.OHNO H.M.WALDRIP | 2013 | Pedosphere2013，23，6： | 3 |
| 2 | 用水喷射法控制明胶的分子量分布和物理性能显示文摘明胶的物理性能及照相性能依赖于明胶的分子量分布,因此,控制明胶分子的分子量分布很重要。我们研究了一种新的方法来控制明胶的分子量分布及物理性能。将明胶溶液用泵加压,然后从喷嘴高速喷射到一个碰撞盘,或者让喷射液相互碰撞。高分子量级分如H1和H2级分减少,γ和β级分增加或者减少,而样品中α级分增加;低分子量级分稍稍有所增加;样品黏度下降,但凝胶强度变化几乎不变。研究发现,水喷射法不仅在控制明胶分子量分布方面十分有效,且能有效地控制明胶的物理性能。 | T.Ohno Y.Okawa M.Horiuchi N.Fujita H.Kobayashi R.Muratubaki N.Nishida O.Hounokidani Y.Nakagawa | 2002 | 明胶科学与技术2002，22，3： | 1 |
| 3 | 查看详情显示文摘 | T.Nagao J.T.Sadowski M.Saito S.Yaginuma Y.Fujikawa T.Kogure T.Ohno Y.Hasegawa S.Hasegawa and T.Sakurai | | 0，，10： | 1 |
| 4 | Cancer immunotherapy using dendritic/tumour‐fusion vaccine induces elevation of serum anti‐nuclear antibody with better clinical responses显示文摘 | S.Homma Y.Sagawa M.Ito T.Ohno G.Toda | 2006 | Clinical & Experimental Immunology2006，，1： | 1 |
| 5 | 用高压浆料喷射法来改变明胶的分子量分布显示文摘明胶是非均一水溶性蛋白质的混合物,它具有很宽的分子量分布,分子量从几千至上百万.明胶的物理和照相性能取决于其分子量分布[1-5],所以控制明胶的分子量分布极为重要. | T.Ohno Y.Okawa H.Kobayashi | 2003 | 明胶科学与技术2003，23，1： | 0 |
| 6 | 抗辐射能力为兆拉德(硅)的CMOS/SIMOX器件显示文摘采用SIMOX和新研制的横向隔离结构作出了抗核辐射的CMOS/SIMOX器件,这些器件经2兆拉德(硅)γ射线辐射后,仍具有充分的工作性能。 | T.Ohno 王界平 | 1989 | 微电子学1989，19，1： | 0 |
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