result 13412 件
| JaLCDOI | 10.18926/ESR/13850 |
|---|---|
| Title Alternative | 沖縄トラフ第四与那国海丘海底熱水系チムニーの錫を含む黄銅鉱と白金を含む輝蒼鉛鉱 |
| FullText URL | ESR_12_1.pdf |
| Author | Gena, Kaul| Chiba, Hiroshi| Kase, Katsuo| |
| Abstract | The active sulfide chimney ore sampled from the flank of the active Tiger chimney in the Yonaguni Knoll IV hydrothermal system, South Okinawa Trough, consists of anhydrite, pyrite, shalerite, galena, chalcopyrite and bismuthinite. Electron microprobe analyses indicated that the chalcopyrite and bismuthinite contain up to 2.4 wt. % Sn and 1.7 wt. % Pt, respectively. The high Sn-bearing chalcopyrite and Pt-bearing bismuthinite are the first occurrence of such minerals on the submarine hydrothermal systems so far reported. The results confirm that the Sn enters the chalcopyrite as a solid solution towards stannite by the coupled substitution of Sn 4+ Fe 2+ for Fe 3+ Fe 3+ while Pt enters the bismuthinite structure as a solid solution during rapid growth. The homogenization temperature of the fluid inclusions in anhydrite (220-310℃) and metasured end-member temperature of the vent fluids (325℃) indicate that the minerals are precipitated as metastable phases at temperature around 300℃. The Sn-bearing chalcopyrite and Pt-bearing bismuthinite expess the original composition of the minerals deposited from a hydrothermal fluid with temperatures of about 300℃. |
| Keywords | Sn-bearing chalcopyrite Pt-bearing bismuthinite Active sulfide Chimmey Yonaguni Knoll IV Okinawa Trough seafloor hydrothermal system |
| Publication Title | Okayama University Earth Science Report |
| Published Date | 2005-12-31 |
| Volume | volume12 |
| Issue | issue1 |
| Start Page | 1 |
| End Page | 5 |
| ISSN | 1340-7414 |
| language | English |
| Copyright Holders | 岡山大学地球科学研究報告編集委員会 |
| File Version | publisher |
| NAID | 120002310444 |
| FullText URL | Ana_Sci_24_505.pdf |
|---|---|
| Author | Kunihiko Seno| Kazuki Matsumura| Oshima, Mitsuko| Motomizu, Shoji| |
| Published Date | 2008-04-10 |
| Publication Title | Analytical Sciences |
| Volume | volume24 |
| Issue | issue4 |
| Publisher | 日本分析化学会 |
| Start Page | 505 |
| End Page | 508 |
| ISSN | 0910-6340 |
| NCID | AA10500785 |
| Content Type | Journal Article |
| language | English |
| OAI-PMH Set | 岡山大学 |
| Copyright Holders | 日本分析化学会 |
| File Version | publisher |
| DOI | 10.2116/analsci.24.505 |
| JaLCDOI | 10.18926/ESR/13844 |
|---|---|
| Title Alternative | バングラディシュの更新世台地の地形と地質 |
| FullText URL | EAR_13_1_1.pdf |
| Author | Towhida Rashid| Md. hossain Monsur| Suzuki, Shigeyuki| |
| Abstract | With regards to the origin and evolution of the Pleistocene tracts (Lalmai, Madhupur and Barind tracts) of Bangladesh, two trends of thoughts are common. Most of the authors believed that the Madhupur, Barind and Lalmai tracts represent tectonically uplifted surface. Some researchers have different opinion and they believed that the Lalmai hills and the Madhupur locality represent tectonically uplifted blocks but the whole Barind tract and the major portion of the Madhuput tracts are not tectonically uplifted, rather these are originated by erossional-depositional processes. In order to solve the problems associated with origin and evolution of Pleistocene tracts of Bangladesh, further study is needed. Borehole data may be collected and fusion images can be prepared from aerial photographs and setellite images to detect netectonic imprins and geomorphological signatures of the areas. Elaborate laboratory analysis of sediment deposits, radiocarbon dating my indicate a new dimension about the origin and evolution of these tracts. |
| Keywords | Bangladesh Lalmai Hill Barind Tract Madhupur Tract Neotectonices Aerial photographs Satellite Image Fusion Image |
| Publication Title | Okayama University Earth Science Report |
| Published Date | 2006-03-31 |
| Volume | volume13 |
| Issue | issue1 |
| Start Page | 1 |
| End Page | 13 |
| ISSN | 1340-7414 |
| language | English |
| Copyright Holders | 岡山大学地球科学研究報告編集委員会 |
| File Version | publisher |
| NAID | 120002310445 |
| Author | Noguchi, Osamu| Oshima, Mitsuko| Motomizu, Shoji| |
|---|---|
| Published Date | 2008-05-10 |
| Publication Title | Analytical Sciences |
| Volume | volume24 |
| Issue | issue5 |
| Content Type | Journal Article |
| Author | Kobayashi, Masanao| Kobayashi, Jun-ichi| Iwagaki, Hiromi| Tanaka, Noriaki| |
|---|---|
| Published Date | 1999-02-28 |
| Publication Title | 岡山医学会雑誌 |
| Volume | volume110 |
| Issue | issue11-12 |
| Content Type | Journal Article |
| Author | Ito, Hideyuki| Marie-Paule Gonthier| Claudine Manach| Christine Morand| Louise Mennen| Christian Rémésy| Augustin Scalbert| |
|---|---|
| Published Date | 2005-10 |
| Publication Title | British Journal of Nutrition |
| Volume | volume94 |
| Issue | issue4 |
| Content Type | Journal Article |
| JaLCDOI | 10.18926/13316 |
|---|---|
| FullText URL | 6_037_044.pdf |
| Author | Enomoto, Satoru| |
| Abstract | As everybody knows, China is growing very rapidly since the opening of the country in 1978.The real Gross Domestic Product (GDP) of China in 2006 has more than 13 times larger than that of 1978. If we suppose the real GDP in 1978 is 100, then we can get 1335 in 2006. Also, the real growth rate of China is almost 10％ annually during the same period ( Ke,2006) and people in the world are amazed to know it. It is often said that the sum of China's GDP will surpass Japan's within a decade or less, if China continues to grow. With the continuation of the growth of Chinese economy, many companies in the world, especially US, European and Japanese companies have already gone into China either to produce goods for exporting back to home country or to foreign countries (export market-oriented) or to produce goods for Chinese domestic market (domestic market-oriented) or both, in any case, exploiting the use of inexpensive labor forces. In fact, foreign countries, of course the main actors are multinational corporations (MNCs) , have heavily invested in China. For example, the total accumulated amount of foreign direct investment (FDI, stock base) from Japan to the world has amounted to $449.6bn. in 2006, of which China has received $30.3bn. (6.3％) , the fourth rank, following the U.S. ($156.4bn., 34.8％) , Holland ($45.4bn., 10.1％) , and U.K. ($31.6bn., 7.0％) . Even on the flow basis, China has received $63.0bn. of inward investment in 2006, of which the most important investing country to China is Hong Kong, totaling $20.2 bn. in 2006, followed by UK-held Virgin Island ($11.2 bnJ ,the second rank, Japan ($4.6bnJ ,the third rank, South Korea ($3.9bnJ and the U. S. ($2.7bn) . (China Statistical Yearbook 2007; JETRO White Paper: Trade and Investment 2007) Based on the above-mentioned facts, we consider the competitive situations among companies from different countries in China. Do they compete head-to-head? Or, do they compete in another way? Through the executives' perception on competition, we try to deal with how they feel their competitive situation in China, based on a questionnaire survey which was sent to Japanese executives in charge of managing manufacturing subsidiaries in China during September to October in 2004 to investigate how subsidiary executives feel their competitive situation there and what kind of strategy they should pursue in the coming years. This paper comprises 4 sections. The next section shows how we collected companies' data, operating in China, and what kind of criteria we have employed to do the research and the basic features of responding companies. The third section deals with the perception of executives on how they perceive their conditions of Chinese market in relation to the competition with their competitors. And we also introduce Porter's Five forces model to investigate why they feel about their market. The final section argues that we have to consider how Japanese executives respond to the competitive situation. Hence, a managerial implication will be discussed from the standpoint of Japanese executives. |
| Publication Title | 北東アジア経済研究 |
| Published Date | 2008 |
| Volume | volume6 |
| Issue | issue1 |
| Start Page | 37 |
| End Page | 44 |
| ISSN | 1880-8476 |
| language | English |
| File Version | publisher |
| NAID | 120002310523 |
| JaLCDOI | 10.18926/13315 |
|---|---|
| FullText URL | 6_021_036.pdf |
| Author | Huang Shaoan| Gao Wei| Zhang Su| Huang Naijing| |
| Abstract | This paper tries to measure the effect of cooperation on economic growth of both China and Japan by setting up an econometric model. This measuring is based on the basic framework of cooperation economics (Huang shao-an,2000) . The structure of the paper is as follows: The first part introduces the basic idea and analytical methods of cooperation economics; the second part establishes an econometric model for measuring the effect of cooperation on economic growth of both China and Japan; The third part measures degree of cooperation between China and Japan from two dimensions which are political factor and bilateral trade between China and Japan, and lists all the macroeconomic data that the econometric model needs; The fourth part employs the econometric model and the macroeconomic data to calculate the effect of cooperation on economic growth of both China and Japan; the final part is a brief conclusion. |
| Publication Title | 北東アジア経済研究 |
| Published Date | 2008 |
| Volume | volume6 |
| Issue | issue1 |
| Start Page | 21 |
| End Page | 36 |
| ISSN | 1880-8476 |
| language | English |
| File Version | publisher |
| NAID | 120002310579 |
| JaLCDOI | 10.18926/13307 |
|---|---|
| Title Alternative | 在日留学生による第二・第三言語の使用における日本的文脈の役割 |
| FullText URL | 25_045_059.pdf |
| Author | Tanaka, Tomoko| Simic Mira| |
| Publication Title | 岡山大学大学院社会文化科学研究科紀要 |
| Published Date | 2008-03-31 |
| Volume | volume25 |
| Issue | issue1 |
| Start Page | 45 |
| End Page | 59 |
| ISSN | 18811671 |
| language | English |
| Copyright Holders | 岡山大学大学院社会文化科学研究科 |
| File Version | publisher |
| NAID | 120002310597 |
| JaLCDOI | 10.18926/bgeou/13298 |
|---|---|
| FullText URL | 136_085_092.pdf |
| Author | Fukunaga, Shintetsu| Zhang Bin| |
| Keywords | political slogans CDA (critical discourse analysis) depth hermeneutical methodology ideology culture |
| Publication Title | 岡山大学教育学部研究集録 |
| Published Date | 2007-10-25 |
| Volume | volume136 |
| Start Page | 85 |
| End Page | 92 |
| ISSN | 0471-4008 |
| language | English |
| File Version | publisher |
| NAID | 120002310373 |
| JaLCDOI | 10.18926/bgeou/13293 |
|---|---|
| Title Alternative | An Analysis of Pluralized Abstract Nouns: With Special Reference to Richardson's Epistolary Novels |
| FullText URL | 138_033_043.pdf |
| Author | Wakimoto, Kyoko| |
| Abstract | Unlike Japanese, English makes a clear distinction between 'singular' and 'plural' by grammatical nleans. Although the concept of plural should logically be applied to countable nouns, there are quite a few examples found in actual use of the language where an uncountable noun takes a plural form. Some abstract nouns can be pluralized to denote individualized meanings or components, while others may be pluralized to emphasize the quality, condition or degree. The latter type is specifically called 'intensive plural' (or 'emotional plural' by some scholars). This article discusses the use of the plural of abstract nouns mainly through a corpus-based analysis of the three epistolary novels by Sanluel Richardson who is supposed to have given a remarkable influence on sentimental literature. |
| Keywords | 抽象名詞 強意複数 Richardson sentimentalism ness |
| Publication Title | 岡山大学教育学部研究集録 |
| Published Date | 2008-06-25 |
| Volume | volume138 |
| Start Page | 33 |
| End Page | 43 |
| ISSN | 0471-4008 |
| language | Japanese |
| File Version | publisher |
| NAID | 120002310222 |
| JaLCDOI | 10.18926/13239 |
|---|---|
| FullText URL | 24_027_033.pdf |
| Author | Yoshioka, Fumio| |
| Publication Title | 岡山大学大学院社会文化科学研究科紀要 |
| Published Date | 2007-11 |
| Volume | volume24 |
| Issue | issue1 |
| Start Page | 27 |
| End Page | 33 |
| language | English |
| Copyright Holders | 岡山大学大学院社会文化科学研究科 |
| File Version | publisher |
| NAID | 120002310566 |
| JaLCDOI | 10.18926/13238 |
|---|---|
| FullText URL | 24_011_025.pdf |
| Author | Tahara, Nobuko| |
| Abstract | This paper analyses an English text in ternlS of major English text patterns, general-specific, claim-counterclainl/hypothetical-real and problem-solution, by making use of 'signaling vocabulary' that has the role of indicating the functional segments of the patterns. The results, by supporting a discourse role of signaling vocabulary, exhibited a mix of the three patterns, with some kind of a variation from a typical pattern, in the overall and subordinate structures. At the same time the analysis made clear that some vocabulary items, such as superordinates and advance labels, have a discourse marking role and help create the text patterns. The results suggest discourse-based vocabulary teaching can be used for raising students' awareness of English text patterns. |
| Publication Title | 岡山大学大学院社会文化科学研究科紀要 |
| Published Date | 2007-11 |
| Volume | volume24 |
| Issue | issue1 |
| Start Page | 11 |
| End Page | 25 |
| language | English |
| Copyright Holders | 岡山大学大学院社会文化科学研究科 |
| File Version | publisher |
| NAID | 120002310504 |
| Author | CHUANUWATANAKUL Suchada| |
|---|---|
| Published Date | 2008-03-25 |
| Publication Title | |
| Content Type | Thesis or Dissertation |
| JaLCDOI | 10.18926/fest/12837 |
|---|---|
| FullText URL | 13_121_124.pdf |
| Author | Takaguchi, Yutaka| Yanagimoto, Yasushi| |
| Abstract | Amphiphilic anthryl dendrons 5 and 6, which have carboxylate groups or oligo(ethyleneoxide) groups at the terminals, show solvatochromic properties. Reaction efficiency of photodimerization and dynamic light scattering (DLS) experiment of 5 and 6 reveal that formation of the aggregate of dendrons 5 or 6 plays a crucial role in this solvatochromism. Interestingly, solvatochromic property of anthryl dendron 6 was useful for determination of the ratio of methanol/water in solution as a fluorescent probe. |
| Keywords | dendrimer anthracene fluorescence solvatochromism water methanol |
| Publication Title | 岡山大学環境理工学部研究報告 |
| Published Date | 2008-03 |
| Volume | volume13 |
| Issue | issue1 |
| Start Page | 121 |
| End Page | 124 |
| ISSN | 1341-9099 |
| language | English |
| File Version | publisher |
| NAID | 120002304793 |
| JaLCDOI | 10.18926/fest/12836 |
|---|---|
| FullText URL | 13_111_119.pdf |
| Author | Akhtar M.Shahbaz| Oki, Yoko| Adachi, Tadashi| |
| Abstract | To acclimate under orthophosphate (Pi) starved environment, plant species and cultivars display an elegant myriad of Pi-adaptive and rescue responses via reprioritizing internal Pi use and maximizing external Pi acquisition by reprogramming metabolism and restructuring root system architecture.Exploitation of considerable genetic diversity both between and within crop species and harnessing of these genetic variations can lead us to develop smart plants with improved P-acquisition, growth and yield under P-deprivation. To elucidate the effect of P-stress on plant growth, and P-efficiency under Pstarvation, 14 diverse Brassica cultivars were grown hydroponically in a climatically controlled chamber using sufficient (200 and 400 μM) and stress (10 and 20 μM) P-levels using ammonium phosphate (NH4H2PO4) as a P source. Cultivars showed differential growth behaviour in terms of biomass accumulation (shoot and root dry matter partitioning), percent distribution of Pi-concentration ([P]) and P-contents in plant parts (roots and shoots), and P-efficiency ratio (% PER)(relative shoot growth) indicating considerable genetic diversity among the tested Brassica cultivars. PER and the proportional increases in shoot dry matter (SDM) accumulation (SDMmax/SDMmin) in response to the P levels assisted in categorizing the cultivars into efficient and inefficient utilizers of the absorbed P from an ambient environment. Cultivars were classified into efficient responsive (ER), efficient non-responsive (ENR), non-efficient responsive (NER) and non-efficient non-responsive (NENR) by plotting ordination plots between PER and SDMmax/SDMmin under P-stress environment. Differential PER values at stress P levels corresponds to high P levels suggest that P efficiency mechanisms can be different from one cultivar to another within a give plant species and cultivars exhibiting high PER values are better choice to thrive under P-starvation. |
| Keywords | Brassica cultivars biomass and P-distribution P-contents P-efficiency ratio |
| Publication Title | 岡山大学環境理工学部研究報告 |
| Published Date | 2008-03 |
| Volume | volume13 |
| Issue | issue1 |
| Start Page | 111 |
| End Page | 119 |
| ISSN | 1341-9099 |
| language | English |
| File Version | publisher |
| NAID | 120002304774 |
| JaLCDOI | 10.18926/fest/12835 |
|---|---|
| FullText URL | 13_103_109.pdf |
| Author | Khan Md. Harunor Rashid| Kabir Syed Monzur| Bhuiyan Md. Mukaddas Ali| Blume Hans-Peter| |
| Abstract | A simulation study was conducted to evaluate the effects of basic slag (BS10 and BS20: basic slag 10 and 20 t ha-1), aggregate size (A20 and A30: aggregate sizes of soil, less than 20 and 20-30 mm) and groundwater depth (Gw0: no influence of groundwater and Gw50: groundwater beneath 50 cm of the soil surface) as physico-chemical amendments in two pre-leached (leached for a week through tap water to remove excessive acidity and salinity from the soil before transplantation) acid sulfate soils of Badarkhali (Salidic Sulfaquept) and Cheringa (Typic Sulfic Halaquept) series in relation to the production of Chilli (Capsicum annum L.). Maximum growth and yield of chilli were recorded by the treatment combining A30Gw50BS20 in both the Cheringa (green chilli weight: 4.82 t ha-1) and Badarkhali (4.51 t ha-1) soils. The application of basic slag (BS20) was found to be the most effective among the individual treatments, followed by the BS10 > A30 > Gw50 treatments. The application of BS20 increased the yield in combination with the Gw0 treatment by 40% for A20, while by 107% for A30 in the Badarkhali soil. On the other hand, in the case of Gw50, these increments were 49 and 141% for A20 and A30, respectively. The application of BS at the highest rate (BS20) to the Cheringa soil was more effective compared with the A20 and A30 treatments in the Badarkhali soil. The same rate of BS20 in combination with the Gw50 treatment increased the yield by 59 to 147% in the Cheringa soil compared with 49 to 141% in the Badarkhali soil. Almost similar and significant (p≤0.05) effects were observed for the other growth parameters of chilli cultivated in both soil series. |
| Keywords | aggregate size basic slag groundwater growth and yield of chilli physico-chemical amendments of acid sulfate soils |
| Publication Title | 岡山大学環境理工学部研究報告 |
| Published Date | 2008-03 |
| Volume | volume13 |
| Issue | issue1 |
| Start Page | 103 |
| End Page | 109 |
| ISSN | 1341-9099 |
| language | English |
| File Version | publisher |
| NAID | 120002304787 |
| JaLCDOI | 10.18926/fest/12834 |
|---|---|
| FullText URL | 13_097_101.pdf |
| Author | Khan Md. Harunor Rashid| Md. Mohiuddin| M. Rahman| |
| Abstract | Non-symbiotic diazotrophic systems for biological nitrogen fixation (BNF) in agriculture are most promising but the possibility for the extension of nitrogen fixation by rice is still speculative. Accordingly, the present study was conducted for the Enumeration, isolation and identification of nitrogen fixing bacterial strains at seedling stage (30 days after seed sowing) in rhizosphere of rice (BR 10, Oryza sativa L.) grown in Non-Calcareous Grey Flood Plain soil of Bangladesh. The soil is classified as ‘Inceptisol’ order and ‘Aquept’ suborder. It was identified as ‘Dhamrai series’, had ‘silt’ texture, pH 7.1 and 5.5 C/N ratio. The present results of the microbial tests on the rice rhizosphere soil evinced that out of 263 isolates, only 91 were branded as nitrogen fixing organisms per gram of soil, which was about 34.6 % of the total isolates. As per selection criteria, four individual strains were considered for identification. Biochemical tests were conducted for proper identification and the selected strains were identified as Enterobacter spp., Klebsiella spp., Bacillus spp. and Azospirllum spp. |
| Keywords | Azospirllum spp. Bacillus spp. diazotrophs Enterobacter Spp. Klebsiella spp. and Oryza sativa. |
| Publication Title | 岡山大学環境理工学部研究報告 |
| Published Date | 2008-03 |
| Volume | volume13 |
| Issue | issue1 |
| Start Page | 97 |
| End Page | 101 |
| ISSN | 1341-9099 |
| language | English |
| File Version | publisher |
| NAID | 120002304761 |
| JaLCDOI | 10.18926/fest/12833 |
|---|---|
| FullText URL | 13_085_095.pdf |
| Author | Khan Md. Harunor Rashid| |
| Abstract | The application of basic slag (BS20 and BS30: basic slag 20 and 30 t ha-1) and aggregate size (A20 and A30: aggregate sizes of soil less than 20 and 20-30 mm) and different techniques (Tech 1: pyrite at top, jarosite at middle, and top soil at the bottom of ridge; Tech 2: top soil at top, pyrite at middle, and jarosite layer at the bottom of ridge) exerted significant (p≤0.05) positive effects on the growth and yield of eggplants cultivated under field condition and the effects varied not only with the kinds and amounts of amending materials but also with the techniques applied. The soil showed a silty clay loam texture, initial pH value of 4.1, pyrite content of 55 g kg-1, base saturation of 47%, ECe value of 3.6 dS m-1, high exchangeable Fe3+ and Al3+ contents of 1.47 and 5.29 cmolc kg-1, respectively. The pH value of the average soil data obtained from all the treatments during fruit set (95 days after transplantation) of eggplants was found to be increased in pH by 1.2 units higher compared with the control (i.e. initial pH value). The contents of P, K, Ca and Mg in the average soil data during fruit set were found to be increased (IOC = increased over control) by 41 to 127% IOC, while the contents of Al3+, Fe3+, Na+, Cl- and SO4 2- in the soil were found to be decreased by 28 to 92% IOC. The different treatments on eggplants grown under the modified-plain-ridge-ditch techniques in the Cheringa acid sulfate soil significantly (0≤0.05) increased the fresh yield of eggplants, and the increment was more pronounced with Tech 2. The maximum yield of 17.8 t ha-1 of eggplant for Tech 1 and 20.1 t ha-1 for Tech 2 were recorded by the application of BS30 in the soils of smaller aggregates (A20) at the ridges of Tech 2, followed by the A30BS30 treatments in both the techniques. The lowest quantity of 1.7 t ha-1 yield was recorded by the control treatment. The eggplants grown in the ridges of both the techniques exhibited the best responses on N, P, K, Ca and Mg contents in eggplant tissues during fruit set. As expected, the lowest contents of these nutrients in the eggplants were recorded in the control treatment. Sulfur content of the eggplants grown in the control plots was 3.6 g kg-1 and was in the range of adequate S content (4 g kg-1). However, the S contents in the eggplants grown in different treatments were significantly (p≤0.01) lower compared with the adequate level. The effectiveness of the treatments for the reclamation of the soil in relation to the growth of eggplants was: Tech 2 > Tech 1, BS30 > BS20, and A20 > A30. The results suggest that the physicochemical properties of the soil, and the growth, yield and nutrition of eggplants were strikingly improved by the application of flash leaching followed by BS30 and A20 treatments in the ridges of Tech 2, and are regarded as the best reclamation measures for this acid sulfate soil. |
| Keywords | aggregate size basic slag growth-yield of eggplant modified-plain-ridge-ditch techniques reclamation and improvement of acid sulfate soil |
| Publication Title | 岡山大学環境理工学部研究報告 |
| Published Date | 2008-03 |
| Volume | volume13 |
| Issue | issue1 |
| Start Page | 85 |
| End Page | 95 |
| ISSN | 1341-9099 |
| language | English |
| File Version | publisher |
| NAID | 120002304770 |
| JaLCDOI | 10.18926/fest/12830 |
|---|---|
| FullText URL | 13_067_074.pdf |
| Author | Md. Shamin Abul Hasnat| Rashid Khan Md. Harunor| Akae, Takeo| |
| Abstract | An incubation study was conducted with the topsoils (depth: 0-20 cm) of two different series namely Cheringa (silty clay loam, pHwater 3.6, electrical conductivity = EC 18.5 dS m-1, CEC 17.2 c mol kg-1, organic matter = OM 39.1 g kg-1, and Badarkhali (silty clay loam, pHwater 3.9, EC 19.0 dS m-1, CEC 18.40 c mol kg-1, OM 30.7 g kg-1) acid sulfate soils to evaluate the effectiveness of basic slag (BS) for the neutralization of acidity and solubility of basic cations. These soils received BS at the rate of 0, 11, 22 and 33 t ha-1 under various moisture regimes (moisture at saturated condition, i.e. 100 % moisture, moisture at field condition, i.e. 50 % and wetting-drying cycles of those 50 and 100 % moisture levels). The impacts of these treatments on some selected properties and changes in water soluble bases in these soils were studied at different periods of 180 days of incubation. The application of BS was found to be increased the pH of soils from 3.6 to 5.1 for Cheringa; 3.9 to 5.2 for Badarkhali soils during the 180 days of incubation. These increments were more striking with the highest doses of BS at 33 t ha-1 under saturated moisture conditions in both the soils. The EC of the soils had not much influenced by the application of BS, regardless of time. The treatments were exerted significant (p≤0.05) effects on the solubility of basic cations in different periods of incubation. The maximum release of the bases were recorded during 180 days of incubation under saturated moisture condition and the findings will be supportive for planning of crop production on these soils. |
| Keywords | acid sulfate soils basic cations basic slag incubation time moisture regimes |
| Publication Title | 岡山大学環境理工学部研究報告 |
| Published Date | 2008-03 |
| Volume | volume13 |
| Issue | issue1 |
| Start Page | 67 |
| End Page | 74 |
| ISSN | 1341-9099 |
| language | English |
| File Version | publisher |
| NAID | 120002304866 |
