scholarly journals Provenance Study of Sancai Glazed Pottery Excavated in Longhai Royal Tomb of Bohai State by Composition and Statistical Analysis

2021 ◽  
pp. 373-382
Author(s):  
Huanhuan Wang, Guyang Yang
Keyword(s):  
Statistical Analysis ◽  
Chemical Composition ◽  
Central Region ◽  
Tang Dynasty ◽  
The Body ◽  
Provenance Study ◽  
X Ray ◽  
Comparative Analyse

The views about the provenance of Sancai glazed pottery discovered in Bohai State are distinct. The purpose of this research is to measure the Sancai glazed pottery samples excavated in Longhai royal tomb of Bohai state by X-ray fluorescence, and then comparative analyse the compositions data of this research with Tang Sancai from the Huangye kiln, Huangbao kiln and Liquanfang kiln in Tang Dynasty in the Central Region of China. The results show that chemical composition of the body and the glaze applied in this research is different from the samples of the above three main kilns in the central region of China. Therefore these samples excavated in Longhai royal tomb of Bohai state are presumably produced in Bohai state locally.

scholarly journals Chemical Composition of Insoluble Particles in an Ice Cap on Storøya, Svalbard (Abstract)

1988 ◽  
Vol 10 ◽  
pp. 204 ◽  
Author(s):  
Jost Heintzenberg ◽  
Margareta Källström ◽  
Hans-Christen Hansson ◽  
Stig Jonsson
Keyword(s):  
Statistical Analysis ◽  
Chemical Composition ◽  
Elemental Carbon ◽  
Ice Core ◽  
Multivariate Statistical ◽  
Factors Affecting ◽  
X Ray ◽  
Ice Cap ◽  
Insoluble Particles ◽  
Major Factors

During the Ymer-80 expedition, a 6 m long ice core was taken on the low-lying ice cap Storøyjøkulen, Svalbard. Core samples of about 10 ml were filtered on 0.1 μm pore-size Nuclepore filters, for analysis with a soot photometer and by means of particle-induced X-ray emission, which yielded elemental carbon and about 15 metals in the insoluble microparticles. The concentrations were comparable to Arctic snow data from other locations. Multivariate statistical analysis of the chemical results indicates two major factors affecting microparticle composition: crustal and anthropogenic. A regular seasonal concentration pattern was found which is consistent with the c. 40 cm annual accumulation deduced from mass-balance studies on the ice cap.

scholarly journals Analysis of working surface in new manual and rotary endodontic instruments (scanning electron microscopy)

2020 ◽  
Vol 148 (7-8) ◽  
pp. 398-403
Author(s):  
Milica Jovanovic-Medojevic ◽  
Martina Pelemis ◽  
Jelena Neskovic ◽  
Marijana Popovic-Bajic ◽  
Djordje Stratimirovic ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Statistical Analysis ◽  
Chemical Composition ◽  
Common Type ◽  
X Ray ◽  
Working Surface ◽  
Surface Metal ◽  
Scanning Electron ◽  
Common Defect

Introduction/Objective. The objective of this study is to use scanning electron microscopy (SEM) to analyze working surfaces of new manual and rotary endodontic instruments and to check possible existence of manufacture dirt particles or defects on the working surface. Methods. In this study, we used three sets of new manual instruments: K-File, KF (Dentsply Maillefer, Switzerland) and Hedstorm Files, HF (SybronEndo Co, USA) and three sets of mechanical Ni-Ti instruments ? type K3 (SybronEndo Co, USA) and BioRaCe (FKG DENTAIRE Swiss Dental Products, Switzerland). The instruments were analyzed using SEM method at 170 ? magnification while semi-quantitative energy dispersive x-ray analysis was used to determine chemical composition of dirt particles. Fisher test (p < 0.05) was applied in statistical analysis. Results. Results showed that none of the instruments were defect-free. The most common defect type was the presence of metal strips, which were noticed at the surface of all tested instruments. Debris was present on all manual and only one type of mechanical instruments, K3 (39% in the apical and 33% in the middle third). Fretting was noticed in all manual KF and all mechanical instruments of the K3 group. Pitting was common in all manual instruments, KF (33% in the apical and 39% in the middle third) and HF (11% in the apical and 6% in the middle third). Corrosion of the working surface, metal flash, and disruption of the cutting edge were marked only in the KF group. Conclusion. Manufacture defects were noticed in all instruments and the most common type of irregularity were metal strips. Electropolished surface of BioRaCe instruments showed no debris of organic origin.

scholarly journals Provenance study of the limestone used in construction and restoration of the Batalha Monastery (Portugal)

ACTA IMEKO ◽  
2021 ◽  
Vol 10 (1) ◽  
pp. 122
Author(s):  
Yufan Ding ◽  
Jose Mirao ◽  
Pedro Redol ◽  
Luis Dias ◽  
Patricia Moita ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Thermogravimetric Analysis ◽  
Fluorescence Spectroscopy ◽  
Provenance Study ◽  
X Ray ◽  
The North ◽  
Central Portugal ◽  
Limestone Quarries ◽  
The Church ◽  
Different Parts

<p class="Abstract">To assess the provenance of the limestones used in the construction and restoration of the Batalha Monastery in central Portugal, stone samples collected from the monument and from five limestone quarries in the region surrounding the building were investigated by energy-dispersive X-ray fluorescence spectroscopy (ED-XRF), powder X-ray diffractometry (PXRD) and thermogravimetric analysis (TGA). Ca-Sr binary diagrams from the ED-XRF result indicated the source of the samples collected from different parts of the monastery. Thin-section observation supplemented the petrographic evidence for this identification. PXRD and TGA were also used to acquire information on the mineral and chemical composition of the stones. Preliminary results suggest that the monastery baluster was made of stone from the Valinho do Rei or Reguengo do Fetal quarries, whereas part of the church railing, the north-aisle eaves arch and Royal Cloister were made with stone from the Pidiogo or Cabeço do Roxo quarries.</p>

scholarly journals Chemical Composition of Insoluble Particles in an Ice Cap on Storøya, Svalbard (Abstract)

1988 ◽  
Vol 10 ◽  
pp. 204-204
Author(s):  
Jost Heintzenberg ◽  
Margareta Källström ◽  
Hans-Christen Hansson ◽  
Stig Jonsson
Keyword(s):  
Statistical Analysis ◽  
Chemical Composition ◽  
Elemental Carbon ◽  
Ice Core ◽  
Multivariate Statistical ◽  
Factors Affecting ◽  
X Ray ◽  
Ice Cap ◽  
Insoluble Particles ◽  
Major Factors

During the Ymer-80 expedition, a 6 m long ice core was taken on the low-lying ice cap Storøyjøkulen, Svalbard. Core samples of about 10 ml were filtered on 0.1 μm pore-size Nuclepore filters, for analysis with a soot photometer and by means of particle-induced X-ray emission, which yielded elemental carbon and about 15 metals in the insoluble microparticles. The concentrationswere comparable to Arctic snow data from other locations. Multivariate statistical analysis of the chemical results indicates two major factors affecting microparticle composition: crustal and anthropogenic. A regular seasonal concentration pattern was found which is consistent with the c. 40 cm annual accumulation deduced from mass-balance studies on the ice cap.

The Evolution Process of the Ancient Chinese Yaozhou Porcelain

1996 ◽  
Vol 462 ◽  
Author(s):  
P. L. Leung ◽  
Luo Hongjie ◽  
Li Jiazhi ◽  
Michael J. Stokes
Keyword(s):  
Statistical Analysis ◽  
Chemical Composition ◽  
Song Dynasty ◽  
Raw Materials ◽  
Batch Composition ◽  
Evolution Process ◽  
X Ray ◽  
The Song Dynasty ◽  
The Ancient Chinese ◽  
Almost All

ABSTRACTThe chemical composition (body and glaze) of over thirty Yaozhou porcelain fragments are determined by X-ray fluorescence (XRF) analysis. Statistical analysis of these results combined with data already published indicate that the full evolution process of Yaozhou porcelain can be divided into four stages. Each stage exhibits a characteristic composition determined by the raw materials and batch composition used to produce the porcelain bodies and glazes. Almost all of Yaozhou celadon and white ware glazes belong predominantly to the CaO-type glaze (or lime glaze), but the glazes of the Song Dynasty (A.D. 960–1280) and later periods have higher K2O content and less CaO than the earlier periods.

Radioprotective Effect of Ganoderma Lucidum (Leyss, ex. Fr.) Karst after X-ray Irradiation in Mice

1990 ◽  
Vol 18 (01n02) ◽  
pp. 61-69 ◽  
Author(s):  
Hsue-Yin Hsu ◽  
Shi-Long Lian ◽  
Chun-Ching Lin
Keyword(s):  
Statistical Analysis ◽  
Radiation Exposure ◽  
Radiation Damage ◽  
Intraperitoneal Injection ◽  
Ganoderma Lucidum ◽  
The Body ◽  
Radioprotective Effect ◽  
Male Mice ◽  
X Ray ◽  
Body Weights

Six to seven week old male mice of ICR strain were exposed to 500 or 650 cGy of X-ray during experiments to determine if Ganoderma lucidumcould be a factor in modification of radiation damage. Continuous intraperitoneal injection of the extract from Ganoderma lucidum before of after irradiation of 500 or 650 cGy of X-ray was found to improve the 30-day survival fractions of ICR mice, but wasn't significant by statistical analysis. The administration also enhanced the recoveries of the body weights and increased the recovery of hemograms of irradiated mice from radiation damage by injecting before or after radiation exposure, especially for the treatment of 500 cGy irradiation. The 10-day CFUs was significantly higher for Ganoderma lucidum treated groups than for untreated groups. However, the differences of radioprotective effect between the X-ray irradiated groups with Ganoderma lucidum pretreated and post-treated were not significant (p>0.05).

X-ray micro tomography in the scanning electron microscope

1978 ◽  
Vol 36 (1) ◽  
pp. 106-107 ◽  
Author(s):  
W. Brünger
Keyword(s):  
Electron Beam ◽  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Target Surface ◽  
The Body ◽  
X Rays ◽  
Cross Sectional ◽  
X Ray ◽  
Micro Tomography ◽  
Scanning Electron

Reconstructive tomography is a new technique in diagnostic radiology for imaging cross-sectional planes of the human body /1/. A collimated beam of X-rays is scanned through a thin slice of the body and the transmitted intensity is recorded by a detector giving a linear shadow graph or projection (see fig. 1). Many of these projections at different angles are used to reconstruct the body-layer, usually with the aid of a computer. The picture element size of present tomographic scanners is approximately 1.1 mm2.Micro tomography can be realized using the very fine X-ray source generated by the focused electron beam of a scanning electron microscope (see fig. 2). The translation of the X-ray source is done by a line scan of the electron beam on a polished target surface /2/. Projections at different angles are produced by rotating the object.During the registration of a single scan the electron beam is deflected in one direction only, while both deflections are operating in the display tube.

Great Increase of Numbers of Virus Particles by Irradiating C3H Mouse Mammary Tumors Transplanted into Male Mice

1972 ◽  
Vol 30 ◽  
pp. 272-273
Author(s):  
P. J. Melnick ◽  
J. W. Cha ◽  
E. Samouhos
Keyword(s):  
Subcutaneous Tissue ◽  
Mammary Tumors ◽  
The Body ◽  
X Ray ◽  
Virus Particles ◽  
Mouse Mammary Tumors ◽  
Transplantable Tumors ◽  
C3h Mice ◽  
Cobalt Radiation ◽  
Enzyme Changes

Spontaneous mammary tumors in females of a high tumor strain of C3H mice were cut into small fragments that were Implanted into the subcutaneous tissue of the back of males of the same strain, where they grew as transplantable tumors. When about Cm. In diameter daily fractional radiation was begun, applied to the tumors, the rest of the body being shielded by a lead shield. Two groups were treated with 150 and 200 r X-ray dally, of half value layer 0.6mm. copper; a third group was treated with 500 r cobalt radiation dally. The primary purpose was to examine the enzyme changes during radiation, with histochemlcal technics.

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