Organic Residues Analysis of Oil Bottle of Goryeo Dynasty Excavated from the Soejeoul Site, Geumneung-dong, Chungju

Organic residues are substances derived from diverse natural sources. Recent scientific analysis of organic residues has yielded important information in restoring the lifestyles of ancient peoples. In this study, the organic material contained within the celadon oil bottle of the Goryeo dynasty, excavated from the Soejoul site in Geumneung-dong, Chungju, was analyzed using Fourier-transform infrared spectroscopy (FT-IR) and gas chromatograph-mass spectrometer (GC-MS). The results showed that the organic materials in the bottle were plant-derived oils. In particular, polyunsaturated fatty acids and phytosterols were detected using GC-MS analysis. Sesamin components were also identified. Sesamin, which is a characteristic component of sesame seeds, is a lignan and an antioxidant. As the organic residues in the oil bottle were derived from sesame seeds, it is presumed that sesame oil was stored in the bottle.

Recent Research Progress (2015–2021) and Perspectives on the Pharmacological Effects and Mechanisms of Tanshinone IIA

Tanshinone IIA (Tan IIA) is an important characteristic component and active ingredient in Salvia miltiorrhiza, and its various aspects of research are constantly being updated to explore its potential application. In this paper, we review the recent progress on pharmacological activities and the therapeutic mechanisms of Tan IIA according to literature during the years 2015–2021. Tan IIA shows multiple pharmacological effects, including anticarcinogenic, cardiovascular, nervous, respiratory, urinary, digestive, and motor systems activities. Tan IIA modulates multi-targets referring to Nrf2, AMPK, GSK-3β, EGFR, CD36, HO-1, NOX4, Beclin-1, TLR4, TNF-α, STAT3, Caspase-3, and bcl-2 proteins and multi-pathways including NF-κB, SIRT1/PGC1α, MAPK, SREBP-2/Pcsk9, Wnt, PI3K/Akt/mTOR pathways, TGF-β/Smad and Hippo/YAP pathways, etc., which directly or indirectly influence disease course. Further, with the reported targets, the potential effects and possible mechanisms of Tan IIA against diseases were predicted by bioinformatic analysis. This paper provides new insights into the therapeutic effects and mechanisms of Tan IIA against diseases.

PALEOMAGNETISM OF THE MIDDLE JURASSIC SEDIMENTARY ROCKS OF THE ELGON FORMATION OF THE ULBAN TERRANE

The paper presents new findings of paleomagnetic studies on Middle Jurassic sedimentary rocks of the Elgon Formation of the Ulban Terrane from coastal outcrops along the Ulban Bay (53.5°N, 137.7°E). Demagnetization yielded a pre-folding characteristic component of magnetization. No inclination shallowing effect for the characteristic magnetization vector was revealed in sandstone specimens of the Elgon Formation. The coordinates of the paleomagnetic pole and the paleolatitude at which the studied rocks deposited were calculated: Plat = -34.3 (34.3)°; Plong = 161.2 (341.2)°; dm = 2.7 dp = 5.3, paleolatitude = 0.1° (+2.7°/-2.6°) S. The acquired paleomagnetic data show evidence for the deposition of rocks of the Ulban Terrane in the Middle Jurassic at the boundary between the Asian paleocontinent and the Paleo-Pacific which later formed part of the Sikhote-Alin Orogenic Belt.

Paleomagnetism of the Sette-Daban Meso-Neoproterozoic magmatic complex of the southeastern margin of the Siberian platform

The interval of ~ 1000 - ~ 900 Ma is one of the key ones in the history of the evolution of the Siberian Platform. At this time, the formation of the neoproterozoic supercontinent Rodinia took place, which undoubtedly found its reflection in the geological annals of Siberia. A reflection of the kinematics of the Siberian platform is its apparent pole wander path (APWP), the development of which will help to clarify the geodynamic in which the platform was at the beginning of the Neoproterozoic. However, not many objects of this age are known within the Siberian Platform, suitable for performing paleomagnetic determinations. The consequence of this is a very limited number of existing reliable poles, obtained either from sedimentary rocks with very imprecise age limits, or from rocks of the Yenisei Ridge and Taimyr with an ambiguous structural position. This paper presents the results of paleomagnetic studies of the Proterozoic igneous rocks of the Sette-Daban complex of the southern Verkhoyansk region, the formation of which took place ~ 1000-970 Ma ago. Detailed thermal magnetic cleaning made it possible to reveal the high-temperature (HT) characteristic component in a significant part of the samples. It has maximum unblocking temperatures of about 580 ° C, lying in the region of the Curie point of magnetite. The average direction of the characteristic component for the sills sampled in the valley of the Yudoma, coincides with the direction obtained earlier on the same bodies. The calculated paleomagnetic pole for the intrusive bodies of the Sette-Daban magmatic complex (Plat = 5.8 °, Plong = 182.9 °, dp / dm = 9.0 ° / 14.4 °) confirms and refines the previously obtained pole for the rocks of this complex, and also indicates that Siberia in the range of ~ 970-1000 Ma was located in the northern hemisphere in tropical latitudes (~ 26 ° N). The analysis of the available geochronological and geochemical data, coupled with new paleomagnetic data, made it possible to clarify the age of the Sette-Daban magmatic event and limit it within ~ 970-1000 Ma.

Differentiating Curculigo Orchioides Rhizoma and Curculigo glabrescens Rhizoma by a Unique New Compound

Background: Market research found that Curculigo glabrescens Rhizoma (CGR) is the major counterfeit of the Curculigo orchioides Rhizoma (COR). C. orchioides Gaertn and C. glabrescens (Ridl.) Merr. belong to the same family and genus, with close plant relationships and high genetic similarity, and rhizomes of the herbs part have less distinguished characteristics, which make the identification difficult.Methods: In order to distinguish COR from CGR more accurately and conveniently, HPLC method was used to establish a characteristic chromatogram of the two herbs, and a unique component in CGR was discovered for first time. Based on that, the characteristic component was systematically separated and purified.Results: The unique component was a new neolignans and named glabrescenin, which could specifically distinguish COR from CGR. The HPLC method we used could establish a characteristic chromatography of CGR.Conclusion: This study was conducive to the quality control of Curculigo, and could promote the correct application of genuine COR in clinical practice.

Metamodels Resulting from Two Different Geometry Morphing Approaches Are Suitable to Direct the Modification of Structure-Born Noise Transfer in the Digital Design Phase

Noise vibration and harshness (NVH) development often takes place in the later development phases. Shifting the optimization to the early digital development phase enables more parameters to participate in the optimization and leads to a more holistic development process. Digital NVH development often modifies system and component frequency response functions (FRFs) using finite element (FE) simulation. Currently, the often manual process of creating new FE models for modified designs makes a systematic evaluation of many designs difficult and time-consuming. In this paper, we take on these difficulties and use both a Direct Morphing approach and a Box Morphing approach to automatically adopt the first existing FE models to modified designs. We use the generated simulation results to fit metamodels describing the correlation between geometrical parameters and characteristic FRF values. These metamodels provide an easy and fast to use tool for designers to consider NVH demands. In a simulation example, we demonstrate the capabilities by modifying the kinematic hard points of a vehicle suspension and using them to modify the noise transfer sensitivity. We show that the metamodels can lead the digital design process to intuitively and specifically reduce characteristic component FRF values by changing the location of the component hard points.

«They drank tea, they struck spoons...»: ethnocultural identity in the tea drinking practices of Russian Siberians in the 19th — early 20th century

On the basis of original field materials, the author set a goal to reveal the identifying functions of the food cul-ture, particularly, of such a characteristic component of the Northern Eurasian population as hot drinks (teas), in different ethnocultural groups of Siberia: descendants of the old settlers and later Russian migrants, old-believers and followers of the official church. The practices of Siberian tea-drinking have been studied from the perspective of ethnocultural identity within the framework of the mundanity theory. It is the folk customs and beliefs related to the consumption of decoctions of local herbs and later of Chinese leaves (tea) that provide opportunity to infer the place of hot drinks in people’s culture. The author reports interesting facts about the traditions of Siberian tea-drinking and table etiquette in the countryside. Chinese tea-drinking from samovars (table boiling tanks) was not embraced by the old-believers and by some Russian migrants in the late 19th — early 20th c. (South-Russians, Ukrainians and Belarusians), where the former refrain due to “suspicious glare” of the surface resembling snake-skin, while the latter by the slimy samovars. In Siberia, the spread of the tea-drinking with Chinese leaf coincided with formation of local old-settler population in the 17th—18th centuries and therefore it can be regarded as an old custom for the service-class people and Cossacks. The fact that the Chinese tea was relatively a novation in the culture of the Siberian population is evidence by that it was not part of the ceremonial practices (e.g., family), in contrast to various herbal brews and kisels (jellies). Siberian tea-drinking traditions of the old-settlers (apart from the old-believers) had strong influence on formation of the regional and ethnocultural identity of the Siberians, in the wide sense of the term as Siberia locals. The established traditions can be considered as a consequence of integration processes amongst the Slavic people in Siberia. The tea-drinking traditions support the conjecture that the differentiation process (comparative evaluation) was accompanied by another process — cultural interference and is inextricably linked to the cognitive process — collective identification, which inhibits non-critical adoption of ‘extraneous’ traditions.

Fast Spectral Correlation Based on Sparse Representation Self-Learning Dictionary and Its Application in Fault Diagnosis of Rotating Machinery

Rolling element bearing and gear are the typical supporting or rotating parts in mechanical equipment, and it has important economy and security to realize their quick and accurate fault detection. As one kind of powerful cyclostationarity signal analyzing method, spectral correlation (SC) could identify the impulsive characteristic component buried in the vibration signals of rotating machinery effectively. However, the fault feature such as impulsive characteristic component is often interfered by other background noise, and the situation is serious especially in early weak fault stage. Besides, the traditional SC method has a drawback of low computation efficiency which hinders its wide application to some extent. To address the above problems, an impulsive feature-enhanced method which combines fast spectral correlation (FSC) with sparse representation self-learning dictionary is proposed in the paper. Firstly, the sparse representation self-learning dictionary method-K-means singular value decomposition (KSVD) is improved and the improved KSVD (IKSVD) method is used to denoise the original signal, and the periodic impulses are highlighted. Then, the FSC algorithm is applied on the denoised signal and spectral correlation image could be obtained. Finally, the calculated enhanced envelope spectrum (EES) of the denoised signal is obtained by using the spectral correlation image to identify the accurate fault position. The feasibility and superiority of the proposed method is verified through simulation, experiment, and engineering application.