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EFFECTS OF SOIL PLUG ON BEHAVIOUR OF DRIVEN PIPE PILES

松本樹典, 武井正孝

土質工学会論文報告集
1991年 31 巻 2 号 14-34
発行日: 1991/06/15
公開日: 2008/02/29

DOI https://doi.org/10.3208/sandf1972.31.2_14

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Stress wave theory is applied to open-ended pipe piles to clarify the effects of soil plug on the behaviour of piles during driving and static loading. Measured field data and various numerical models are reviewed ; methods are presented to calculate wave propagation in both the pile and the soil plug ; modelling is presented which takes into account the interaction between the soil plug and the pile ; also presented is simplified method to estimate the loadsettlement relation of the pipe pile in static loading. By correlating observed and calculated values in two analytical cases, the authors demonstrate that incorporation of the soil plug (modelled as a series of masses and springs) is required to correctly predict pile behaviour during driving and static loading.
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GEOTECHNICAL RECONNAISSANCE STUDY ON DAMAGE CAUSED BY 2001 GUJARAT EARTHQUAKE, INDIA

東畑郁生, PRASAD S.K., 本多剛, CHANDRADHARA G.P.

地盤工学会論文報告集
2002年 42 巻 4 号 77-88
発行日: 2002/08/15
公開日: 2008/02/29

DOI https://doi.org/10.3208/sandf.42.4_77

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The Gujarat earthquake in India occurred in January, 2001, and caused significant damage in the province of Gujarat. The Japanese Geotechnical Society sent a small reconnaissance team to the damaged region after the quake. The present text presents the report from this activity. The major attention of the team was focused on geotechnical aspects of the damage which were related to earthfill dams and harbor land fills. It was found that a significant portion of damage was concentrated in fills resting on soft natural soils. Swedish weight soundings which were conducted at two places demonstrated the existence of such a soft subsoil. From this, it was concluded that amplification of earthquake shaking as well as the permanent deformation in the soft foundation soil induced such kinds of damage as subsidence, cracking, and lateral spreading in overlying artificial fills. For the better seismic resistance of those affected fills during future earthquakes, the improvement of soft subsoil seems essential.
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DYNAMIC RESPONSES OF FLEXIBLE RECTANGULAR FOUNDATIONS EMBEDDED INTO A VISCOELASTIC HALF-SPACE TO OBLIQUELY INCIDENT WAVES

蒋通, 栗林栄一

土質工学会論文報告集
1988年 28 巻 1 号 56-64
発行日: 1988/03/15
公開日: 2008/02/29

DOI https://doi.org/10.3208/sandf1972.28.56

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The boundary element method expanded in frequency domains is presented to analyze the dynamic interaction between an embedded flexible rectangular foundation and soil with consideration of the obliquely incident waves. Numerical results describing the influence of the flexibility of the foundation on the dynamic responses of the foundation due to obliquely incident waves indicate that the flexibility of actual foundations can diminish the reduction of translation responses and increase the rotational responses in the high frequency range. These phenomena are more conspicuous as the embedment ratio is larger and the value of the wave velocity ratio of the soil and the foundation approaches to unity. When the high frequency components of the input ground motion are important and the basement has higher flexibility (for example ₂v_s/₁v_s >0.
4
), the analysis method which considers the basement as a rigid foundation may lead to unsafety estimations and the estimation of the flexibility of the foundation is necessary as analysing the effective input motion with consideration of the incident waves.
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地盤構造の急変する地域での表面波の振幅異常

山田善一, 野田茂

土質工学会論文報告集
1988年 28 巻 1 号 143-152
発行日: 1988/03/15
公開日: 2008/02/29

DOI https://doi.org/10.3208/sandf1972.28.143

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Stimulative Effects of (
22E
,24R)-Ergosta-
7
,
22
-diene-
3β
,5α,6β-triol from Fruiting Bodies of Tricholoma auratum, on a Mouse Osteoblastic Cell Line, MC
3
T
3
-
E
1

Keishi Hata, Fuyuki Sugawara, Naganori Ohisa, Saori Takahashi, Kazuyuki Hori

Biological and Pharmaceutical Bulletin
2002年 25 巻 8 号 1040-1044
発行日: 2002年
公開日: 2002/08/01

DOI https://doi.org/10.1248/bpb.25.1040

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We screened the differentiation-inducing activities of 39 mushroom extracts from Akita prefecture, Japan, on the mouse osteoblastic cell line, MC
3
T
3
-
E
1. Sixteen phosphate buffered saline (PBS),
8
boiled PBS, 14 ethanol and 12 methanol extracts induced alkaline phosphatase (ALP) activities, an indicator of MC
3
T
3
-
E
1 cell differentiation. The enzyme activities were markedly induced by extracts of Tricholoma auratum, and we isolated the active compound from methanol extracts of this mushroom. Physical data for the isolated active compound were identical to those for (
22E
,24R)-ergosta-
7
,
22
-diene-
3β
,5α,6β-triol (1). 1 induced ALP activities of MC
3
T
3
-
E
1 cells and promoted cell proliferation. To investigate the relationships between the chemical structure and differentiation-inducing activity of the compound, ALP-inducing activities of MC
3
T
3
-
E
1 cells by 1, ergosterol (2), ergocalciferol (
3
), cholesta-
3β
,5α,6β-triol (
4
),
7
-dehydrocholesterol (5) and cholecalciferol (6) were tested. The enzyme activities of MC
3
T
3
-
E
1 cells were increased
3
.0-fold by 10 μM 1 and 2.
4
-fold by 10 μM
4
. However, 2,
3
, 5 and 6 did not induce MC
3
T
3
-
E
1 cell ALP activity at 0.1—10 μM. These results suggested that the OH groups at C-5 and/or C-6 of 1 and
4
played an important role in their differentiation-inducing activities on MC
3
T
3
-
E
1 cells. Furthermore, 1 suppressed induction of MC
3
T
3
-
E
1 cell apoptosis by serum starvation.
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THE EFFECTS OF SOIL YIELDING ON SEISMIC RESPONSE OF SINGLE PILES

ALI TABESH, HARRY G. POULOS

地盤工学会論文報告集
2001年 41 巻 3 号 1-16
発行日: 2001/06/15
公開日: 2008/02/29

DOI https://doi.org/10.3208/sandf.41.3_1

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In the seismic analysis of pile foundations the soil is often assumed to be an elastic material and the pressure at the soil pile interface is not limited during the analysis. This may result in a considerable error, as the computed pressure from an elastic analysis may go well beyond the ultimate lateral pressure of real soil. In fact, significant yielding at the soil-pile interface has been observed during real earthquakes, and also in laboratory tests. The yield zone is usually near the ground surface where the effect of inertial force due to the superstructure is higher. This yielding redefines the pile response, and in general cannot be ignored. In order to examine the effects of soil yielding on the internal pile response during earthquakes an approximate analysis is described in this paper which is an extension of a static method developed by the second author (1982) for the analysis of piles subjected to lateral soil movement. This method is then used to investigate the effects of soil yielding on the internal response of piles through a comparative study in which real earthquakes are used. It is shown that for strong earthquakes and heavily loaded piles the soil yielding may considerably increase the amount of maximum pile moment developed in the pile. A marked difference in the effects of yielding on the pile moment and shear is observed and discussed.
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DYNAMIC SOIL-PILE INTERACTION PARAMETER IDENTIFICATION USING TRANSFER FUNCTION TECHNIQUE

ABDALLAHI.HUSEIN MALKAWI, ROBERTY. LIANG

地盤工学会論文報告集
1996年 36 巻 3 号 67-74
発行日: 1996/09/15
公開日: 2008/02/29

DOI https://doi.org/10.3208/sandf.36.3_67

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The interaction between a penetrating shaft and the surrounding soil media under impact loading is a frequently encountered phenomenon in geotechnical engineering. Examples of such dynamic soil/shaft interaction would include dynamic pile driving, standard penetration testing (SPT), and dynamic driven rod test. Presented in this paper is a novel approach, based on the principle of dynamic system identification, which enables identification of dynamic soil-pile interaction model parameters. The analytical transfer function, relating the output stress wave forms to the input stress wave forms in the soil/shaft system, is derived using the Laplace and Fourier Transform techniques and the one-dimensional wave propagation theories. A numerical solution algorithm based on a variation of gradient method is coded into a micro-computer based program to solve the frequency-dependent soil-pile interaction parameters (Smith model) : soil damping and soil spring stiffness. To further reduce the amount of computational effort required in the solution of the frequency-dependent dynamic soil properties, it is suggested that the solution be obtained for the first-mode natural frequency of the measured stress waves. The results obtained from this simplified solution algorithm, when compared with both numerical simulations and controlled laboratory tests, are reasonably acceptable. The proposed parameter identification technique offers a viable alternative data interpretation procedure for deducing pertinent Smith model parameters used frequently in pile driving analysis.
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Synthesis of (S)-13-Hydroxy (2
E
,
4
E
,
8
E
)- and (2
E
,
4
E
,
8
Z)-Tetradecatrienoic Acids

Ying Jiao, Teruhiko Yoshihara, Akitami Ichihara

Bioscience, Biotechnology, and Biochemistry
1995年 59 巻 6 号 1032-1035
発行日: 1995/06/23
公開日: 2008/02/08

DOI https://doi.org/10.1271/bbb.59.1032

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The syntheses of (S)-13-hydroxy-(2
E
,
4
E
,
8
E
)-tetradecatrienoic acid (1) and (2
E
,
4
E
,
8
Z-tetradecatrienoic acid (2) were carried out by using the Wittig reaction as the key step. The asymmetric center at C-13 and the double bond between C-
8
and C-9 for natural compound 1 were reconfirmed as being of (S) configuration and
E
, respectively. The relationship between the structure of the unsaturated hydroxy fatty acids and their inhibitory effect on the growth of lettuce was investigated.
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熱力学諸量の測定とその結果を用いた化学熱力学計算によるNi-Mo-
B
およびNi-W-
B

3
成分系状態図の決定

香山滉一郎, 森下政夫, 張国鋒

粉体および粉末冶金
2006年 53 巻 5 号 419-429
発行日: 2006年
公開日: 2006/12/19

DOI https://doi.org/10.2497/jjspm.53.419

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The phase diagrams of the Ni-Mo-
B
and Ni-W-
B
ternary systems in the region of less than 50mol%
B
were constructed by thermodynamic calculation, based on the data obtained by thermodynamic measurement of the related materials. We found three ternary eutectic points and three or two ternary peritecto-eutectic points as follows:
E₁
:L (1365K, 71.5mol%Ni-6.0mol%Mo-
22
.5mol%
B
)=(Ni)+
Ni₃B
+
NiMo₂B₂

E₂
:L (1355K, 62.5mol%Ni-2.5mol%Mo-30.5mol%
B
)=
Ni₃B
+
Ni₂B
+
NiMo₂B₂

E₃
:L (1445K, 42.0mol%Ni-30.6mol%Mo-10.
3
mol%
B
)=(Ni)+NiMo+
NiMo₂B₂

P₁:L (1812K, 34.9mol%Ni-42.
3
mol%Mo-
22
.
8
mol%
B
)+MoB=
Mo₂B
+
NiMo₂B₂

P₂:L (1633K, 42.
3
mol%Ni-40.
4
mol%Mo-17.
3
mol%
B
)+Mo=
Mo₂B
+
NiMo₂B₂

P₃
:L (1812K, 53.5mol%Ni-33.
7
mol%Mo-12.
8
mol%
B
)+Mo=NiMo+
NiMo₂B₂

E₁
:L (1622K, 51.0mol%Ni-31.6mol%W-17.
4
mol%
B
)=(Ni)+W+
NiW₂B₂

E₂
:L (1260K, 71.0mol%Ni-
7
.0mol%W-
22
.0mol%
B
)=(Ni)+
Ni₃B
+
NiW₂B₂

E₃
:L (1291K, 65.
4
mol%Ni-
4
.
8
mol%W-29.
8
mol%
B
)=
Ni₂B
+
Ni₃B
+
NiW₂B₂

P₁:L (2115K, 23.
8
mol%Ni-43.1mol%W-33.1mol%
B
)+WB=
W₂B
+
NiW₂B₂

P₂:L (1657K, 48.9mol%Ni-33.1mol%W-18.0mol%
B
)+
W₂B
=W+
NiW₂B₂

The calculated phase diagrams are expected to be useful for the development of new Ni-based heat-, corrosion- or wear-resistance alloys.
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Polyacetylene Compounds from Atractylodes Rhizome

鹿野美弘, 櫻井徹朗, 小松健一, 山田浩之, 斉藤謙一

Chemical and Pharmaceutical Bulletin
1990年 38 巻 4 号 1082-1083
発行日: 1990/04/25
公開日: 2008/03/31

DOI https://doi.org/10.1248/cpb.38.1082

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Two new polyacetylene compounds (
4
E
, 6
E
, 12
E
)-1-acetoxy-
3
-isovaleryloxytetradeca-
4
, 6, 12-trien-
8
, 10-diyn-14-ol (
B
), and (
4
E
, 6
E
, 12
E
)-1-acetoxy-
3
-(2-methylbutyryloxy)tetradeca-
4
, 6, 12-trien-
8
, 10-diyn-14-ol (C) have been isolated along with (
4
E
, 6
E
, 12
E
)-1-acetoxy-
3
-senecioyloxytetradeca-
4
, 6, 12-trien-
8
, 10-diyn-14-ol (A) from Atractylodes Rhizome (Karabyakujutu). The structures of these compounds were determined on the basis of their spectral data.
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PERFORMANCE-BASED ANALYSIS OF EARTH DAMS: PROCEDURES AND APPLICATION TO A SAMPLE CASE

STEFANIA SICA, LUCA PAGANO

SOILS AND FOUNDATIONS
2009年 49 巻 6 号 921-939
発行日: 2009年
公開日: 2011/01/27

DOI https://doi.org/10.3208/sandf.49.921

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The paper illustrates theoretical and experimental procedures adopted to characterize the seismic response of earth dams by performance-based criteria. The study refers to a real case, the Camastra Dam, a zoned earth dam with vertical clay core, placed in a highly seismic zone of Southern Italy. At first, the analysis objectives have been identified along with the physical quantities needed to achieve them for characterizing dam seismic performance. A theoretical approach, consistent with the identified analysis objectives, has been later selected. The adopted approach is based on continuum mechanics and accounts for coupling between soil skeleton and pore water phase. It is also able to describe the main features of soil response under cyclic loading conditions since it implements an advanced constitutive law for the soil skeleton. Big effort has been paid to the mechanical characterization of the dam materials. In addition to data coming from the interpretation of the laboratory tests performed at the time of dam construction, in situ tests (SASW, Down Hole, DMT) have been recently carried out on the embankment and foundation soils and interpreted consistently with the requirements of the selected theoretical model. Preliminarily, the static stages of the dam lifetime have been numerically simulated to reproduce the behaviour observed in terms of cross-arm settlements and pore water pressures, in order to obtain or verify some soil parameters and initialize the state variables for the simulation of the seismic stages. A seismological study of the dam site provided the expected seismic scenarios in terms of time histories of acceleration, needed as input for the dynamic analyses. The seismic response of the Camastra Dam was finally investigated and discussed in the light of performance-based criteria.

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A STUDY TO EVALUATE THE SEISMIC RESPONSE OF ROAD EMBANKMENTS

LUCA PAGANO, STEFANIA SICA, POMPEO COICO

SOILS AND FOUNDATIONS
2009年 49 巻 6 号 909-920
発行日: 2009年
公開日: 2011/01/27

DOI https://doi.org/10.3208/sandf.49.909

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A crucial matter related to roads in seismic areas is to ensure viability during the post-seismic stages, especially if the road represents an important or unique way to reach towns that may be potentially hit by strong earthquakes. Verification of road viability under seismic actions requires not only safety assessment of the failure mechanisms which may jeopardize single road components (embankment, viaduct, bridge, etc.) but also evaluation of performance. Viability of a road may be compromised by an unsatisfactory response of road embankments. The vehicle flux may be, in fact, inhibited or reduced if a road embankment suffers global instability mechanisms or significant permanent displacements mainly at the contact with structural elements (
e
.g., viaducts, bridges) that do not move significantly. In this case the embankment permanent displacements turn out into steps or separations. The paper accounts for the different stages followed to study the seismic performance of the road embankments located along a sample road branch of about 5 km. Preliminary activities consisted in characterizing the geological area of the sample road, in selecting the potentially vulnerable embankments and in carrying out in-situ investigations to properly characterize the physical and mechanical properties of the embankments and foundation soils. A seismological study of the sample area was performed in order to characterize the reference seismic actions needed for the numerical analyses. The seismic response of the embankments was evaluated by a pseudo-dynamic approach and an advanced dynamic model. In the latter, the equations describing dynamic equilibrium and compatibility were merged with an elastoplastic combined-hardening constitutive law that properly models soil response under cyclic loads. The embankment's seismic performance was predicted in terms of permanent settlements at the embankment top surface versus the peak acceleration of the reference input motions.

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The Properties of 2112 keV Level in ¹¹⁶Sn

Yukichi Yamaguchi, Jian-zhi Runan(Gen), Teruaki Nagahara

Journal of the Physical Society of Japan
1975年 38 巻 4 号 911-916
発行日: 1975/04/15
公開日: 2007/06/01

DOI https://doi.org/10.1143/JPSJ.38.911

ジャーナル認証あり

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The gamma-ray spectrum and the conversion-electron spectrum are measured in the decay of the ^116mIn activity. Directional correlations are also measured for 818–1293 and 1097–1293 keV cascades. The M1-
E
2 mixing ratio δ, and the
E
0-
E
2 mixing ratio μ_k are obtained for 818.
7
keV
2₂
+→2₁⁺ transition to be δ=1.52_{−0.22
+0.26, and μ_k≤6.1×10^{−4
respectively. The E
2 branching ratio B
(E
2; 2₂
+}→0_g⁺): B
(E
2; 2₂
+→2₁⁺): B
(E
2; 2₂
+→0₁⁺) is determined to be 0.0158:1.0:5.86.
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Magnetism of β′-Gd₂(
MoO₄
)_{3
and photoluminescence of β′-Eu₂(MoO₄
)_{3
crystallized in rare-earth molybdenum borate glasses}}

Yong WANG, Tsuyoshi HONMA, Yoshihiro DOI, Yukio HINATSU, Takayuki KOMATSU

Journal of the Ceramic Society of Japan
2013年 121 巻 1410 号 230-235
発行日: 2013/02/01
公開日: 2013/02/01

DOI https://doi.org/10.2109/jcersj2.121.230

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Ferroelastic β′-Gd₂(
MoO₄
)_{3
and β′-Eu₂(MoO₄
)_{3
crystals were synthesized through the crystallization of 21.25Gd₂O₃
–63.75MoO₃
–15B₂O₃
glass and 22.5Eu₂O₃
–47.5MoO₃
–30B₂O₃
glass, respectivelty, and their magnetism and photoluminescence properties were examined. It was demonstrated from the temperature dependence of the magnetic susceptibility and specific heat down to T = 1.8
K that the magnetic state of Gd³
+ ions in the crystallized samples, i.e
., in the β′-Gd₂(MoO₄
)_{3
crystals and the residual glasses, is paramagnetic and any magnetic interaction is not formed among Gd³
+ ions down to T = 1.8
K, i.e
., the effective magnetic moment of µ_eff = 7
.94
µ_B and Weiss constant of θ = –0.3
K. Photoluminescence (PL) of Eu³
+ ions was clearly observed in the crystallized samples, although the melt-quenched glass did not show any photoluminescence. The present study proposes that the concentration quenching among Eu³
+ ions in β′-Eu₂(MoO₄
)_{3
crystals is small and β′-RE₂(MoO₄
)_{3
crystals would be good hosts for PL emissions of RE³+.
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(
4
E
)-Dehydrocitrals [(2
E
,
4
E
)- and (2Z,
4
E
)-
3
,
7
-dimethyl-2,
4
,6-octatrienals] from Acarid Mite Histiogaster sp. A096 (Acari: Acaridae)

Hiroyuki HIRAOKA, Naoki MORI, Ritsuo NISHIDA, Yasumasa KUWAHARA

Bioscience, Biotechnology, and Biochemistry
2001年 65 巻 12 号 2749-2754
発行日: 2001年
公開日: 2002/08/30

DOI https://doi.org/10.1271/bbb.65.2749

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A mixture of two monoterpenes was obtained as the opisthonotal gland secretion from unidentified Histiogaster sp. A096 (Acari: Acaridae), and their structures were elucidated to be (
4
E
)-dehydrocitrals[(2
E
,
4
E
)- and (2Z,
4
E
)-
3
,
7
-dimethyl-2,
4
,6-octatrienals] by GC/MS, GC/FT-IR, UV and ¹H-NMR spectra. Both isomers of (
4
E
)-dehydrocitral prepared by syntheses in
4
steps from
3
-methyl-2-butenal with 34.2% yields (based on the ylide) were separated by column chromatography into the (2
E
,
4
E
)- and (2Z,
4
E
)-
3
,
7
-dimethyl-2,
4
,6-octatrienal. Mass spectra together with GC retention times of the purified natural (
4
E
)-dehydrocitrals were identical with those of synthetic (2
E
,
4
E
)-
3
,
7
-dimethyl-2,
4
,6-octatrienal and (2Z,
4
E
)-
3
,
7
-dimethyl-2,
4
,6-octatrienal. The geometry at the 2-C position of both synthetic (
4
E
)-dehydrocitrals was confirmed by NOESY analyses. This is the first identification of (
4
E
)-dehydrocitrals from the animal kingdom.
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Distribution of Sarcophytol A in Soft Coral of the Sarcophyton Genus

Mamoru KOH, Tetsuo IWANAGA, Masahiro HATANAKA, Akio NAKANO, Kazuyuki MORIHARA, Kaoru TAKEMURA

Bioscience, Biotechnology, and Biochemistry
2000年 64 巻 4 号 858-861
発行日: 2000年
公開日: 2005/03/01

DOI https://doi.org/10.1271/bbb.64.858

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The distribution of sarcophytol-A in the Sarcophyton genus was investigated in seven samples belonging to S. glaucum (
3
samples), S. infundibulifurme (2 samples), S. crassocaule (1 sample) and S. trocheliophorum (1 sample) that were collected on Ishigaki Island in Okinawa Prefecture. Sarcophytol-A was present in one sample each of S. glaucum and S. infundibulifurme. This study indicates that the composition of cembranoids in the Sarcophyton genus is not related with the respective species, but with the individual samples collected.

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緑膿菌感染症の研究

泌尿器科領域における臨床分離株と環境分離株に関する疫学的検討

鎌田日出男

日本泌尿器科學會雑誌
1979年 70 巻 10 号 1142-1158
発行日: 1979/10/20
公開日: 2010/07/23

DOI https://doi.org/10.5980/jpnjurol1928.70.10_1142

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1) P. aeruginosa has been consistently isolated from 26.5 to 42.
4
% of the patients with urinary tract infections in the urological ward of Okayama University Hospital for the past
7
years. 232 (
22
.
3
%) out of 1042 hospitalized patients were with urinary tract infections with P. aeruginosa for past
4
years. Of these, 149 (64.2%) were thought to be the catheter induced urinary tract infections. The mode of spreading of this organism was epidemiologically investigated.
2) The following three laboratory assays were used for identification of P. aeruginosa isolated from clinical and environmental strains; serological typing, antibiotic sensitivity and protease and elastase production. Serological typing with 13 immunodiagnostic sera (Toshiba Chemical Industry) was performed by slide agglutination method. Protease and elastase production were detected by the method described by Goto et al.
In combination with serological typing and antibiograms, protease and elastase production offers the finest means of differentiating the strains of P. aeruginosa.
3
) Of 136 clinical strains of P. aeruginosa, 89.
7
% were serotypable strains. Serotype K was the most prevalent (36.0%), followed by serotype
E
(28.
7
%), F (10.
3
%) and A (
7
.
4
%). Most of serotype F and
B
which were concurrently isolated from patients in 1976 had the same patterns of antibiogram and production of protease and elastase. It was strongly suggested that these patients were nosocomially cross-infected with the P. aeruginosa from the catheterization or through instrumentation.
4
) Of 354 environmental specimens, 78 P. aeruginosa (
22
.
8
%) were isolated, which were frequently isolated from floor mops and sink-drains. Of these strains,
87
.2% were serotypable strains. Serotype
E
was the most prevalent (42.
3
%), followed by serotype K (24.
4
%) and
B
(12.
8
%). The same strains were seldom detected at the same sources successively, but different types of P. aeruginosa were usually detected. Among the serotypes
E
, F and K, 18 strains (23.1%) were identical with the clinical strains. All of these were found during or after the clinical outbreaks of P. aeruginosa infections. There was no environmental strains that caused clinical infections. The other 60 strains (76.9%) were different from the clinical strains, and present only transiently in the hospital environments.
5) Both clinical and environmental strains similary produced protease and elastase at 70 to 80%, hemolysin at 100%. Only 10 out of 37 environmental strains (27.0%) were found to produced exotoxin.
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MICROSEISM BARRIERS

M. L. GHOSH

Journal of Physics of the Earth
1972年 20 巻 2 号 165-186
発行日: 1972年
公開日: 2009/04/30

DOI https://doi.org/10.4294/jpe1952.20.165

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The possibility of attenuation of microseismic waves due to the presence of an upward folding of the ocean bottom into the liquid is discussed in this paper. The upward folding of the ocean bottom has been idealized by means of an irregularity in the form of a rectangle intruding into the liquid and the evaluation of the displacement component at any point of the solid medium has been carried out in two stages. First, the change in the incident mode of the surface wave due to the presence of the rectangular irregularity has been determined, and second, the subsequent change of the resulting displacement components due to the termination of the liquid layer and the step change in elevation of the solid medium at the continental margin has been discovered. Finally, numerical calculation has been made to determine the attenuation of the microseismic waves of different periods due to the presence of the rectangular irregularity at the ocean bottom.
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40 五味子の新dibenzocyclooctadiene型リグナンの構造と反応

田口平八郎, 池谷幸信, 吉岡一郎

天然有機化合物討論会講演要旨集
1979年 22 巻 40
発行日: 1979/09/20
公開日: 2017/08/18

DOI https://doi.org/10.24496/tennenyuki.22.0_299

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Three new dibenzocyclooctadiene lignans, epigomisin O(1), gomisin
E
(
7
) and angeloylgomisin Q(26), were isolated from the fruits of Schizandra chinensis BAILL.(Schizandraceae), which are used as an antitussive and a tonic under the names of "Hoku-gomisi" in Japan and "Wu-wei-zi" in China. 1) The structure of epigomisin O(1) was elucidated by correlation with known lignans, gomisins O(2) and N(
4
). 2) Oxidation of
4
with KMnO_
4
in a mixture of 2% NaOH and pyridine gave compounds
3
and 5. Further oxidation of
3
with KMnO_
4
gave 5. Reduction of 5 with NaBH_
4
afforded deangeloylgomisin
B
(6). The structure of gomisin
E
(
7
) was elucidated by the same reaction to correlate with a known lignan, gomisin D(
8
).
3
) The cleavage of the methylenedioxy group on the aromatic ring with Pb(OAc)_
4
in dry benzene into diphenol was studied(19-
22
→19
b
-
22
b
). The structure of angeloylgomisin Q(26) was elucidated by the use of the above reaction to correlate with 6.
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10H-Benz [
b
] pyridazino [
3
,
4
-
e
] [1,
4
] thiazin und 5H-Benz [
b
] pyridazino [
4
,
3
-
e
] [1,
4
] thiazin

米田文郎, 大高孝之, 新田義博

Chemical and Pharmaceutical Bulletin
1963年 11 巻 7 号 954-956
発行日: 1963/07/25
公開日: 2008/03/31

DOI https://doi.org/10.1248/cpb.11.954

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