詳細検索結果

The production of nematode-immobilizing secretory cells by Climacodon septentrionalis

Joey
B
. Tanney, Leonard J. Hutchison

Mycoscience
2012年 53 巻 1 号 31-35
発行日: 2012年
公開日: 2023/03/31

DOI https://doi.org/10.1007/s10267-011-0128-1

ジャーナルオープンアクセス

抄録を表示する抄録を非表示にする

The ability of Climacodon septentrionalis to immobilize and kill a mycophagous nematode (Aphelenchoides sp.) in vitro is described for the first time. Two isolates produced droplets (20–45 μm in diameter) that formed at the apices of tall, stalked, and branching secretory cells (700–
1
,500 μm tall). On 2% modified malt extract agar, nematodes became enveloped in the droplets, which restricted their ability to move and resulted in complete immobilization and death within several hours of contact. The rate of decomposition of the nematodes varied considerably, with most individuals persisting for weeks whereas others were degraded within several days and appeared to be colonized by dense hyphal growth. This study provides the first documentation of a non-agaricoid fungus producing secretory cells that are able to immobilize nematodes.

抄録全体を表示

PDF形式でダウンロード (175K)
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

ジャーナルフリー

抄録を表示する抄録を非表示にする

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.
抄録全体を表示

PDF形式でダウンロード (125K)
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

ジャーナルフリー

抄録を表示する抄録を非表示にする

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.
抄録全体を表示

PDF形式でダウンロード (1863K)
Transformation Assays of the Cell Mitotic and Proliferation Activities of Purified Oncogene Products

KENTARO YUGE, MASANOBU CHINAMI, MASAHISA SHINGU

The Kurume Medical Journal
1994年 41 巻 4 号 165-169
発行日: 1994/12/27
公開日: 2009/08/11

DOI https://doi.org/10.2739/kurumemedj.41.165

ジャーナルフリー

抄録を表示する抄録を非表示にする

Using two direct introduction methods, DNA synthesis or cell proliferation activities of three purified proteins from
E
. coli, namely, human papillomavirus (HPV)
E
7
proteins of type 16, a mutant type 16 (24 C-G) (transformation defective) and type
6
b
, were measured in mouse fibroblast, C127 cells. By a microinjection method, the order of the cell mitotic indexes for the three
E

7
proteins as determined by 5-bromo-2'-deoxy-uridine (BrdU) staining was type 16,
6
b
and 16 (24 C-G). By the osmotic shock method, the ^{3H
-TdR incorporation and coloration by (3-carboxymethoxy phenyl)-2-(4-sulfophenyl)-2H-tetolazorium (MTS) for the three proteins correlated with the pRb binding and focus forming activities previously reported (hunger et al. 1991). These results indicate that the simple osmotic shock method for direct protein introduction may be generally useful for transformation assays of oncoproteins.
抄録全体を表示}

PDF形式でダウンロード (1518K)
カナダにおける製紙原料供給の現状

増大する資源

E
. F. Boswell

紙パ技協誌
1998年 52 巻 7 号 885-889
発行日: 1998/07/01
公開日: 2009/11/19

DOI https://doi.org/10.2524/jtappij.52.885

ジャーナルフリー

抄録を表示する抄録を非表示にする

The world is in the midst of a huge fundamental shift in fibre supply, demand balances, and policy changes. Governments around the world are introducing policy changes which influence the supply demand balance as the politicians' thoughts are uttered. Government agencies and their bureaucrats are imposing changes on industry even before the legislation is passed by the government in question.
This ad hoc change process will continue for a time to come until the countries in question show a tough-mindedness with regard to their land use policies. Policies affecting forest areas such as protection areas, Native land claims, the protection of biodiversity and a true goal of sustainable development ; which addresses the combined issues of cultural, environmental, social and economic matters.
Eventually all of these difficult issues will reach essential closure. Then there will be great new opportunities for investment to meet the growing demand for forest products ; leading to a strengthening competitive position in the more traditional producing areas such as Canada.
抄録全体を表示

PDF形式でダウンロード (624K)
Deexcitation of the 931.
1
keV
2₂
+-State of Cd¹⁵²

Yasuyuki Gono, Manabu Fujioka, Tamotsu Toriyama

Journal of the Physical Society of Japan
1970年 29 巻 2 号 255-258
発行日: 1970/08/05
公開日: 2007/06/01

DOI https://doi.org/10.1143/JPSJ.29.255

ジャーナル認証あり

抄録を表示する抄録を非表示にする

The gamma-ray spectrum and the conversion-electron spectrum are measured in the decay of the Tb¹⁵² activity. The L-subshell electron lines of the 586.
7
keV
2₂
+→2₁⁺ transition are separated by the ion-free beta-ray spectrometer. The M
1
-
E
2 mixing ratio, δ², and the dimensionless ratio X of
E
0-
E
2 mixing of the 586.
7
keV transition are obtained to be δ²≤0.16 and 0.034≤X≤0.038, 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 0.023 :
1
.0 : 5.
6
.
抄録全体を表示

PDF形式でダウンロード (336K)
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

抄録を表示する抄録を非表示にする

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 M
1
-
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.
抄録全体を表示

PDF形式でダウンロード (540K)
より実用的な飛行機への探求

Grover Loening

日本航空学会誌
1963年 11 巻 119 号 373-380
発行日: 1963年
公開日: 2009/05/25

DOI https://doi.org/10.2322/jjsass1953.11.373

ジャーナルフリー

PDF形式でダウンロード (5071K)
Petri Neural Network Model for the Effect of Controlled Thermomechanical Process Parameters on the Mechanical Properties of HSLA Steels

S. Datta, J. Sil, M. K. Banerjee

ISIJ International
1999年 39 巻 10 号 986-990
発行日: 1999/10/15
公開日: 2007/05/31

DOI https://doi.org/10.2355/isijinternational.39.986

ジャーナルフリー

抄録を表示する抄録を非表示にする

The effect of composition and controlled thermomechanical process parameters on the mechanical properties of HSLA steels is modelled using the Widrow-Hoff's concept of training a neural net with feed-forward topology by applying Rumelhart's back propagation type algorithm for supervised learning, using a Petri like net structure. The data used are from laboratory experiments as well as from the published literature. The results from the neural network are found to be consistent and in good agreement with the experimented results.
抄録全体を表示

PDF形式でダウンロード (722K)
英国における過去半世紀 (1922～1972) 間の冶金用コークスの研究

George W. Lee

燃料協会誌
1973年 52 巻 3 号 171-177
発行日: 1973/03/20
公開日: 2010/06/28

DOI https://doi.org/10.3775/jie.52.171

ジャーナルフリー

PDF形式でダウンロード (1186K)
Optical Energy-Levels of Cu⁺

Yosizo YAMAMOTO

Nippon Sugaku-Buturigakkwai Kizi Dai
3
Ki
1940年 22 巻 12 号 1048-1052
発行日: 1940年
公開日: 2009/06/09

DOI https://doi.org/10.11429/ppmsj1919.22.12_1048

ジャーナルフリー

抄録を表示する抄録を非表示にする

The numerical values of the intervals betrween optieal levels are competed for the configurations
1s²2s²2p⁸3s²3p⁸3
*^{94s
, 5s, 6
s and 7
s of Cu⁺, according to the general expression of energy-levels derived in the previous paper The self-consistent field radial functions computed by Hartree adn Hartree are used for1
s, 2s, 2p, 3
s, 3
p and 3
d. Those of 4s, 5s, e.s and are ealenlated from Hartree Hartree's core-functions by the numerical integrations. The calculated results are shown in Table I.The agreement with experiment is satisfactory
抄録全体を表示}

PDF形式でダウンロード (167K)
右房室弁の形態学的検索

その所属腱索および乳頭筋について

島田博

日本医科大学雑誌
1981年 48 巻 6 号 779-789
発行日: 1981/12/15
公開日: 2010/10/14

DOI https://doi.org/10.1272/jnms1923.48.779

ジャーナルフリー

抄録を表示する抄録を非表示にする

Although there have been numerous articles concerning the anatomy of the atrioventricular valve in man, only a few publications have recorded the relationship between the chordae tendineae and the papillary muscles. The purpose of this paper is to study the relationship among the shape and size of the atrioventricular valve, the chordae tendineae and the papillary muscles. 50 subjects, as listed in Table
1
, were analyzed by the Taniya-Hashimoto Method.
The results obtained were as follows:
1
) The right atrioventricular valve was classified into two types: 33 cases (66%) of three irregularly shaped cusps, i.
e
. type I, and 17 cases (34%) of four or five cusps, i.
e
. type II.
2) The average circumference of the right atrioventricular orifice (ostium atrioventriculare dextrum) was 11.96cm (9.63.15.06cm) in type I and 12.19cm (9.52.15.
22
cm) in type H. There existed no significant difference in the circumference of the atrioventricular orifice between type I and II.
3
) The average length of the cusp-fundus (the length of the fixed margin of the cusp) was as follows:
type I: anterior cusp…………4.13cm (2.03-
6
.96cm)
posterior cusp…………
3
.62cm (
1
.21-5.44cm)
septalcusp……………4.21cm (
3
.11-
6
.08cm)
type II: anterior cusp…………4.10cm (2.68-5.42cm)
posterior cusp…………
3
.67cm (0.
94
-5.70cm)
septal cusp……………4.43cm (2.96-
6
.53cm)
4) The average width of the cusp (the maximum distance between the apex and the fundus of the cusp) was as follows:
type I: anterior cusp…………
1
.86cm (
1
.26-2.29cm)
posterior cusp…………
1
.62cm (0.62-2.
94
cm)
septal cusp……………
1
.76cm (
1
.15-2.72 cm)
type II: anterior cusp…………
1
.92cm (
1
.40-2.34cm)
posterior cusp…………
1
.72cm (0.
94
-2.42cm)
septal cusp……………
1
.84cm (
1
.14-2.53cm)
The length or width of the cusp in type I was similar to that in type II.
5) The papillary muscles consisted of five groups, which were named the anterior, postlateral, postmedial, postseptal and septal muscles. The average number of the papillary muscles per right ventricle was 5.
7
(2.0.9.0). The chordae tendineae from the anterior papillarymuscles were attached to the anterior and posterior cusps and those from the postlateral and postmedial muscles were attached to the posterior and septal cusps. The chordae tendineae from the postseptal muscles were linked only to the septal cusp and those from the septal muscles were connected to the septal and anterior cusps.
6
) The average number of the stems of the chordae tendineae from the papillary muscles were as follows:
From the anterior papillary muscles………
7
.2 (2.0-14.0)
the postlateral papillary muscles……
3
.5 (
1
.0-8.0)
the postmedial papillary muscles……4.0 (
1
.0-8.0) the postseptal papillary muscles……4.5 (
1
.0-13.0) the septal papillary muscles………5.
7
(2.0-12.0)
The average n umber of the stems of the chordae tendineae per right ventricle was 24.4 (16.0-35.0).
7
) The tip of the chordae tendineae are attached to the fixed margin of the valve cusp, i.
e
. type A, to the ventricular surface, i.
e
. type
B
and to the free margin, i.
e
. type C. The average number of them were 23.4 (14.0-32.0) in type A, 19.2 (4.0-37.0) in type
B
and 68.
1
(31.0-105.0) in type C. The average number of the apexes of the chordae tendineae per right ventricle was 110.
7
(53.0-166.0).
8) The average number of the chordae tendineae for the anterior cusp was 34.9 (12.0-64.0), for the posterior cusp 30.5 (5.0-65.0) and for the septal cusp 45.
3
(23.0-68.0).
抄録全体を表示

PDF形式でダウンロード (2809K)
ジスプロシウム添加カルシウム－ランタン－ボレートガラスの白色発光

中山享, 藤本綾, 坂本みゆ, 渡部杏菜, 石川千尋

科学・技術研究
2022年 11 巻 2 号 151-155
発行日: 2022年
公開日: 2023/01/07

DOI https://doi.org/10.11425/sst.11.151

ジャーナルオープンアクセス

抄録を表示する抄録を非表示にする

出発原料を
1
,100～
1
,300℃にて大気雰囲気中で溶融した後に自然冷却して、Ca(La
1
-xDyx)
B
7
O13（x = 0.01～0.30）、MII(La0.
94
Dy0.06)
B
7
O13（MII：Mg、Ca、Sr、
Ba
）、Ca(REIII0.
94
Dy0.06)
B
7
O13（REIII：La、Gd、Y）、Ca(La0.
94
Dy0.06)ByO13（y =
3
～
7
）組成のガラスを作製した。すべてのガラスにおいて、励起波長351 nmにて483 nm（4F9/2 →
6
H15/2）と574 nm（4F9/2 →
6
H13/2）に蛍光ピークが観測された。Ca(La
1
-xDyx)
B
7
O13ガラスの483 nmと574 nmの蛍光ピーク強度共に、x = 0.01～0.06ではDy量が増えるに従い強くなった。一方、x = 0.06以上では低下し、濃度消光が確認できた。x = 0.06の色度座標は、（0.295, 0.346）であった。MII(La0.
94
Dy0.06)
B
7
O13ガラスでは、Mgの蛍光強度がCa、Sr、
Ba
に較べて僅かに強かった。また、Ca(La0.
94
Dy0.06)ByO13ガラスでは、y =
3
～
6
の蛍光強度がy =
7
に較べて僅かに強かった。Dy
3
+の周りの対称性の低さが影響していると考えられる。
抄録全体を表示

PDF形式でダウンロード (671K)
BREAKOUT RESISTANCE OF HORIZONTAL ANCHORS IN SAND

B
.C. CHATTOPADHYAY, P.J. PISE

土質工学会論文報告集
1986年 26 巻 4 号 16-22
発行日: 1986/12/15
公開日: 2008/02/29

DOI https://doi.org/10.3208/sandf1972.26.4_16

ジャーナルフリー

抄録を表示する抄録を非表示にする

Horizontal plate anchors are widely used in civil engineering constructions to resist vertical pulling loads. The available theoretical model suggested by Vesic to estimate the breakout resistance of plate anchors is in significant error, particularly for dense sandy soils. A theoretical model assuming a curved surface of failure through the surrounding soil, to evaluate the ultimate breakout resistance of horizontal plate anchors, has been proposed. It successfully brings out the concept of characteristics relative depth beyond which the breakout factor reaches a constant final value. It is capable of predicting breakout factors for wide range of values of angle of shearing resistance of sand.
抄録全体を表示

PDF形式でダウンロード (665K)
Certainty Factor Estimation Using Petri Neural Net for HSLA Steel

S. DATTA, M. K. BANERJEE

ISIJ International
2005年 45 巻 1 号 121-126
発行日: 2005年
公開日: 2006/01/27

DOI https://doi.org/10.2355/isijinternational.45.121

ジャーナルフリー

抄録を表示する抄録を非表示にする

An unsupervised learning technique and an associative memory have been used for encoding weights by a special type of Petri network named Petri neural net for modelling the influence of alloying elements on the final property of the high strength low alloy steel. The combined effects of alloying elements for different strengthening mechanisms is predicted when weights and threshold values are chosen on the basis of metallurgical understanding. The technique is found to be effective to create an associative memory of input-output relations in unknown data sets so that the same can be subsequently be used as a predictive tool.
抄録全体を表示

PDF形式でダウンロード (351K)
Kohonen Network Modelling for the Strength of Thermomechanically Processed HSLA Steel

S. Datta, M. K. Banerjee

ISIJ International
2004年 44 巻 5 号 846-851
発行日: 2004/05/15
公開日: 2007/05/31

DOI https://doi.org/10.2355/isijinternational.44.846

ジャーナルフリー

抄録を表示する抄録を非表示にする

Primarily from the point of view of improvement of yield strength due to additions of niobium, titanium and boron in HSLA steels, the experimental steels are divided into five classes. The data are then supplied for learning a Self Organising Map (Kohonen network). It is found that the network with six neurons possesses better capacity of prediction with unknown data. Another effort of clustering the steels according to its major strength contributing mechanisms is also made. But the capacity of the network to cluster unknown data is found to be rather poor and has failed to follow from the metallurgical principles. To avoid this limitation, Learning Vector Quantisation method is adopted to impart a certain amount of supervision in the learning process and it is found that the training pattern of the network attains a good convergence thereby leading to a good predictive ability.
抄録全体を表示

PDF形式でダウンロード (608K)
Effect of Thermomechanical Processing on the Microstructure and Properties of a Low Carbon Copper Bearing Steel

M. K. Banerjee, P. S. Banerjee, S. Datta

ISIJ International
2001年 41 巻 3 号 257-261
発行日: 2001/03/15
公開日: 2007/05/31

DOI https://doi.org/10.2355/isijinternational.41.257

ジャーナルフリー

抄録を表示する抄録を非表示にする

A boron treated copper bearing HSLA steel containing austenite formers like manganese and nickel, somewhat lower in amount than that in HSLA 100 variety of steel is chosen for the study. The role of thermomechanical processing on the microstructure and mechanical properties of the above steel has been investigated. Differential scanning calorimetric study is carried out for understanding the precipitation behaviour of copper in HSLA steel under the influence of boron. The microstructure of the experimental steel is found to consist of laths of martensites and bainite. MA constituents of ribbon like morphology are observed at the lath boundaries. Higher strength properties of the steel are attributed to the presence of finely distributed precipitates of copper and microalloy carbides.
抄録全体を表示

PDF形式でダウンロード (1068K)
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

ジャーナルフリー

抄録を表示する抄録を非表示にする

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+.
抄録全体を表示}}}}}

PDF形式でダウンロード (446K)
ANALYSIS OF LANDSLIDES DURING THE 1978 IZU-OHSHIMA-KINKAI EARTHQUAKE

石原研而, 長尾哲

土質工学会論文報告集
1983年 23 巻 1 号 19-37
発行日: 1983/03/15
公開日: 2008/02/29

DOI https://doi.org/10.3208/sandf1972.23.19

ジャーナルフリー

抄録を表示する抄録を非表示にする

Using the so-called pseudo-static method, a stability analysis was made for the mountain slide that took place at Mitake-iriya village at the time of the Izu-Ohshima-Kinkai earthquake of January 14, 1978. Undisturbed samples of volcanic clay were obtained in blocks from the exposed surface of the deposit identified to have been the sliding surface. The partially saturated clay samples were tested under consolidated undrained conditions using the triaxial test equipment. Dynamic axial stresses with irregular time histories were applied to the specimens in combination with statically sustained axial stresses to determine the soil strength under the conditions simulating in-situ states of stress during the earthquake. The results of the tests were expressed in terms of the Mohr-Coulomb type failure criterion which showed that, while the angle of internal friction remained almost unchanged, the cohesion component in irregular loading increased above values obtained in the static loading. Using the strength parameters thus determined, a pseudo-static analysis was made to check the stability of the soil masses that had actually slid during the 1978 earthquake. The maximum horizontal acceleration required to cause the slide was computed. The computed accelerations were shown to cover a range between 400 and 500 gals which is consistent with the range estimated by other investigators on the basis of overturning of tombstones in the vicinity of the slide area.
抄録全体を表示

PDF形式でダウンロード (2274K)
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

ジャーナルオープンアクセス

抄録を表示する抄録を非表示にする

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.
6
mol%Mo-10.
3
mol%
B
)=(Ni)+NiMo+
NiMo₂B₂

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

P₂:L (1633K, 42.
3
mol%Ni-40.4mol%Mo-17.
3
mol%
B
)+Mo=
Mo₂B
+
NiMo₂B₂

P₃
:L (1812K, 53.5mol%Ni-33.
7
mol%Mo-12.8mol%
B
)+Mo=NiMo+
NiMo₂B₂

E₁
:L (1622K, 51.0mol%Ni-31.
6
mol%W-17.4mol%
B
)=(Ni)+W+
NiW₂B₂

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

E₃
:L (1291K, 65.4mol%Ni-4.8mol%W-29.8mol%
B
)=
Ni₂B
+
Ni₃B
+
NiW₂B₂

P₁
:L (2115K, 23.8mol%Ni-43.
1
mol%W-33.
1
mol%
B
)+WB=
W₂B
+
NiW₂B₂

P₂:L (1657K, 48.9mol%Ni-33.
1
mol%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.
抄録全体を表示

PDF形式でダウンロード (1045K)

J-STAGEへの登録はこちら（無料）