scholarly journals EFFECTS OF ANGIOTENSIN II AND 1-SAR., 8-ISOLEU. ANGIOTENSIN II ON ELECTRICAL AND MECHANICAL PROPERTIES OF THE PORTAL VEIN FROM RATS OF DIFFERENT AGES

1979 ◽  
Vol 29 (4) ◽  
pp. 639-651 ◽  
Author(s):  
Yutaka TAKATA ◽  
Hirosi KURIYAMA
Keyword(s):  
Mechanical Properties ◽  
Angiotensin Ii ◽  
Portal Vein ◽  
Different Ages

scholarly journals Fine grained concrete structures reliability assessment: theory and investigational studies

2018 ◽  
Vol 251 ◽  
pp. 02002 ◽  
Author(s):  
Sergey Parfenov ◽  
Anatoly Alekseytsev ◽  
Yuriy Vinokurov
Keyword(s):  
Mechanical Properties ◽  
Modulus Of Elasticity ◽  
Experimental Studies ◽  
Reliability Assessment ◽  
Concrete Structures ◽  
Fine Grained ◽  
Different Ages ◽  
Emergency Actions ◽  
General Safety

Describes the theoretical preconditions of using mechanical properties of fine-grained concrete in the design of concrete structures subject to risks and the general safety. A technique for experimental studies and data on the fine-grained concrete deformative properties at different ages and different loading levels are presented. The regularities of the modulus of elasticity change from strength, type and age of concrete are revealed. Full diagrams of deformation of concrete are constructed. The results obtained can be used in the design of the fine-grained concrete structures in buildings having risks occurrence socioeconomic losses and able to resist of emergency actions.

scholarly journals Mechanical Properties of Smooth Muscle Portal Vein in Normal and Dystrophin-Deficient (MDX ) Mice

1999 ◽  
Vol 84 (5) ◽  
pp. 929-940 ◽  
Author(s):  
R. Mancinelli ◽  
P. Tonali ◽  
R. Romani ◽  
A. Tringali ◽  
R. Vargiu ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Smooth Muscle ◽  
Portal Vein ◽  
Mdx Mice

Pressure and Angiotensin II Influence the Mechanical Properties of Aortic Valves

2012 ◽  
Vol 2012 (4) ◽  
pp. 41
Author(s):  
Valtresa Myles ◽  
Jun Liao ◽  
James N. Warnock
Keyword(s):  
Mechanical Properties ◽  
Angiotensin Ii ◽  
Aortic Valves

Mechanical properties of collagen gels derived from rats of different ages

2005 ◽  
Vol 16 (10) ◽  
pp. 1261-1275 ◽  
Author(s):  
Ching-Chou WU ◽  
Shinn-Jyh Ding ◽  
Yao-Hsien Wang ◽  
Ming-Jer Tang ◽  
Hsien-Chang Chang
Keyword(s):  
Mechanical Properties ◽  
Collagen Gels ◽  
Different Ages

Study on the Mechanical Properties of Backfill Cream-Body during Coal Mining

2012 ◽  
Vol 170-173 ◽  
pp. 533-536 ◽  
Author(s):  
Shao Jie Chen ◽  
Wei Jia Guo ◽  
Hai Long Wang ◽  
Yi Tao Zhong
Keyword(s):  
Mechanical Properties ◽  
Coal Mine ◽  
Surface Mining ◽  
Test System ◽  
Control Surface ◽  
Ecological Environment ◽  
Uniaxial Compression Test ◽  
Mechanical Parameters ◽  
Test Results ◽  
Different Ages

In order to research the mechanical properties of the backfill cream-body under engineering conditions in the coal mine, the uniaxial compression test of backfill cream-body with different ages abtained from the filling locale of Daizhuang coal mine is conducted with MTS815.03 rock test system. The characteristics of backfill cream-body in the limited space and a certain environment are studied. Research shows that, the strength of backfill cream-body is high, but coagulability is bad and the discreteness of mechanical properties is different; Uniaxial compressive strength is 2.3 ~ 13.17 MPa and the average is 5.436 MPa; The elastic modulus is very low ,which is only 53.66 ~ 2614.35 MPa and the average is 645.14 MPa. The deformation is bigger when absorbing load; Poisson's ratio is low, which is only 0.0001 ~ 0.2112 and the average is 0.0265, which indicates that the backfill cream-body doesn't need the space of transverse deformation when bearing compression deformation; The mechanical parameters of backfill cream-body with different ages are fitted and regressed. Test results is important to control surface mining subsidence effectively, liberate the coal resources under buildings, railways and waterbodies and protect the ecological environment.

Cholera toxin but not pertussis toxin inhibits angiotensin II-enhanced contractions in the rat portal vein

1993 ◽  
Vol 230 (1) ◽  
pp. 95-97 ◽  
Author(s):  
Jisi Zhang ◽  
Jacques C.A. Van Meel ◽  
Martin Pfaffendorf ◽  
Pieter A. Van Zwieten
Keyword(s):  
Angiotensin Ii ◽  
Portal Vein ◽  
Cholera Toxin ◽  
Pertussis Toxin ◽  
Rat Portal Vein

Effect of a 14-day hindlimb suspension on cytosolic Ca2+ concentration in rat portal vein myocytes

1997 ◽  
Vol 273 (6) ◽  
pp. H2867-H2875 ◽  
Author(s):  
Jean-Luc Morel ◽  
François-Xavier Boittin ◽  
Guillaume Halet ◽  
Serge Arnaudeau ◽  
Chantal Mironneau ◽  
...  
Keyword(s):  
Angiotensin Ii ◽  
Sarcoplasmic Reticulum ◽  
Portal Vein ◽  
Complete Recovery ◽  
Hindlimb Suspension ◽  
Patch Clamp Technique ◽  
Voltage Gated ◽  
Rat Portal Vein ◽  
Inositol 1,4,5 Trisphosphate

Effects of a 14-day hindlimb suspension were examined on increases in cytosolic Ca2+ concentration ([Ca2+]i) evoked by vasoactive compounds and on Ca2+ channels in rat portal vein myocytes. The maximal increases in [Ca2+]ielicited by caffeine, norepinephrine, and angiotensin II were reduced by 30–50% in suspended rats, and complete recovery was obtained 4 days after suspension removal. In contrast, voltage-gated Ca2+ channels were unaffected by hindlimb suspension. Using both confocal microscopy and the patch-clamp technique, we measured local increases in [Ca2+]iwhich corresponded to activation of a small number of ryanodine-sensitive Ca2+-release channels (Ca2+ sparks) andd- myo-inositol 1,4,5-trisphosphate [Ins(1,4,5)P3]-gated Ca2+ channels. After hindlimb suspension, these local Ca2+events, as well as the Ca2+sensitivity of ryanodine-sensitive Ca2+ release channels, remained unchanged. In contrast, the propagated Ca2+ responses (Ca2+ waves) were significantly reduced in parallel with a noticeable inhibition of [3H]ryanodine binding to vascular membranes. Taken together, these results suggest that inhibition of the vasoconstrictor-induced increases in [Ca2+]iduring long-term suspension may be related to a reduction of the number of functional ryanodine-sensitive and Ins(1,4,5)P3-gated channels in the sarcoplasmic reticulum of rat portal vein myocytes.

Sign in / Sign up

Export Citation Format

Share Document