The Pattern Informatics algorithm, which has recently shown promising performance for earthquake forecasting in Southern California, been used to detect the locations where precursory seismic activity occurred preceding 1999 Chi‐Chi, Taiwan, earthquake. Using method as presented this paper, epicenter of Chi‐Chi main shock was found exhibit signatures anomalous related activation and quiescence Taiwan region over a time span about 6 years before shock. A strategy making intermediate‐term...

The Taiwan orogen has formed since the late Miocene by oblique collision between Luzon Volcanic Arc on Philippine Sea Plate, and Eurasian continental margin. This produced an that decreases in age from north to south, permits study of temporal evolution arc‐continent collision. These factors make a favorable location process first long‐period magnetotelluric (MT) measurements were recorded as part Integrated Geodynamics Research (TAIGER) project 2006–7. Measurements made at 82 sites three...

Abstract Under the inhibition of Cu +2 ‐induced LDL oxidation‐guided fractionation, two new flavone glycosides with galloyl substitution were isolated from dried fallen leaves Terminalia catappa L. Their structures established as apigenin 6‐ C ‐(2″‐ O ‐galloyl)‐β‐ D ‐glucopyranoside ( 1 ) and 8‐ 2 ), together four known glycosides, isovitexin, vitexin, isoorientin, rutin, on basis spectroscopic method. Compounds showed significant antioxidative effects. IC 50 2.1 4.5 μM, respectively.

The pharmacological activity of dicentrine, isolated from Lindera megaphylla , was determind in rat thoracic aorta, guinea‐pig trachea and human platelet‐rich plasma. Dicentrine found to be a potent α 1 ‐adrenoceptor blocking agent aorta as revealed by its competitive antagonism noradrenaline‐ (pA 2 = 8.19 ± 0.09) or phenylephrine 9.01 0.10)‐induced vasoconstriction. These effects still persisted denuded aorta. It less than prazosin 10.60 0.10), but more phentolamine 7.53 ±0.10) yohimbine...

Abstract The 2010 M L 6.4 Jiashian earthquake struck southern Taiwan and caused some damage due to the strong ground shaking. Since epicenter is located in a relatively low background seismicity area, we want investigate rate changes associated with main shock by applying region‐time‐length pattern informatics algorithms. Both temporal spatial results exhibit signatures of abnormal change related seismic activation quiescence prior shock. In addition, patch coincides region Coulomb stress...

Abstract Rupture directivity of earthquakes could amplify ground shaking and cause serious earthquake hazards. Its timely information is therefore great importance for early alerts emergency responses. To this end, we test the feasibility using near‐field (<25 km) motion data from a dense low‐cost seismic network in Taiwan to constrain provide warning far‐field areas. The method simple robust, based on real‐time map interpolation directional attenuation regression analysis. Applications...

Abstract Geoelectric self‐potential (SP) signals are sensitive to natural and anthropogenic factors. The SP spectral characteristics under the different factors in Taiwan were investigated, scalings correlated with urbanization level, seismicity, crustal deformation. ambient noise models first established by estimating probability density functions of spectrograms at each frequency. effects on understood comparing various conditions, such as precipitation, urbanization, electric trains....

Abstract Background/Aims: Oxidative DNA damage by reactive oxygen species is involved in the process of liver carcinogenesis. To test hypothesis that a remedy containing Scutellaria baicalensis Georgi (Sb) and Bupleurum scorzonerifolfium Willd (Bs) (Sb/Bs remedy) modulates hepatic neoplastic growth, BOP ( N ‐nitrosobis(2‐oxopropyl)amine)‐induced cancers hamsters were established. Methods: Parameters such as survival rate, tumour area, foci, 8‐hydroxydeoxyguanosine (8‐OHdG), caspase‐3,...

Abstract Eighteen compounds including fourteen lignans, one coumarin, and three alkaloids were isolated from the leaves of Magnolia coco. Their structures established by comparison spectral data with literature values. Among them, N ‐acetylanolobine was elucidated as a new compound.

To demonstrate a concern in geological interpretation after statistical hypothesis testing, writing that “geological hypotheses are never ‘true’—they will always be rejected if lots of data available,” P. Vermeesch ( Eos, 90 (47), 443, doi:10.1029/2009EO470004, 2009) considers null H 0 earthquake occurrences not depending on the day week. He found his testing result rejects , and he argues does reveal any significance. We argue conclusion basically demonstrates Type I error, where is despite...

Abstract Phytochemical examination on the leaves of Ilex cornuta Lindl. (Aquifoliaceae) resulted in isolation and identification lupeol (I), 3β‐hydroxylup‐20(29)‐en‐30‐al (II), oleanolic acid (III), β‐sitosterol‐ β‐D ‐glucoside (IV).

Abstract Recent studies in the earthquake magnitude‐frequency relation ( b ‐value) found that ‐value can decrease with time before large earthquakes source area. Such a even coincided burst of foreshocks immediately implying preslip migrating toward nucleation zone. We systematically survey variations space and area 17 magnitudes greater than M L 6.0 Taiwan. relocated released by Central Weather Administration Taiwan since 2012 as timing provide sufficiently low completeness magnitude (M C )...

Abstract A localized shear stress concentration, provoked by the tectonic escape process, in source region of Chi‐Chi (Taiwan) Earthquake has been used to explain mechanism ML=7.3 devastating earthquake. This study, employing geophysical magnetotellurics (MT) soundings technique, mapped deep electrical structures beneath seismogenic zone and shows prominent effects. About fifty MT were conducted analyzed recover 3D resistivity distributions. Results show a distinct low anomaly, less than...

PreviousNext No AccessSEG Technical Program Expanded Abstracts 1997A magnetotelluric image at subduction zone: TaiwanAuthors: Chow‐Son ChenChien‐Chih ChenKeyson ChouChow‐Son ChenInstitute of Geophysics, National Central University, Taiwan, Chien‐Chih and Keyson ChouInstitute Taiwanhttps://doi.org/10.1190/1.1885915 SectionsAboutPDF/ePub ToolsAdd to favoritesDownload CitationsTrack CitationsPermissions ShareFacebookTwitterLinked InRedditEmail Permalink:...