scholarly journals Study on the Microstructure of the Pinctada martensii Pearls and Its Significance

2012 ◽  
Vol 2012 ◽  
pp. 1-9 ◽  
Author(s):  
Wenlong Wu ◽  
Liping Zhang ◽  
Zhijun Yang ◽  
Weisheng Hou
Keyword(s):  
Raman Spectra ◽  
Early Stage ◽  
Formation Processes ◽  
High Quality ◽  
Middle Stage ◽  
Pinctada Martensii ◽  
Medium Quality ◽  
Three Stages ◽  
Last Stage ◽  
Crystalline Plane

The results of a microscopy, SEM-EDS, XRD, FTIR, and Raman spectra study of the nacres of the Pinctada martensii pearls from Zhanjiang city, China shows that they can be classified as the high-quality, medium-quality, and inferior-quality pearls. Aragonite, the main inorganic mineralogy in the nacres, was crystallized and grown up in the compartments formed by the silk and radial organic sheets originating from organic matters secreted by the mantle of mollusks. The crystalline orientations of aragonite tablets were changed from the (002), (012) and (102) crystalline plane nets in the early to the (002) crystalline plane net only in the later. The formation processes of the microstructure of the nacres could be divided into three stages. In the early stage, the precursor particles of aragonite nucleated and grew up fast; then, porous aragonite aggregates consisting of the fine aragonite crystals were formed. In the middle stage, the aragonite crystals directionally grew up to form the aragonite tablets and microlayers. The surface of the aragonite tablets and microlayers are rough and few porous, and the edges of the crystals were serrated. In the last stage, the aragonite tablets in the aragonite microlayer mixed perfectly together to form high-quality aragonite layer whose surface was smooth and perfect.

scholarly journals Geology, Fluid Inclusion, and H–O–S–Pb Isotope Constraints on the Mineralization of the Xiejiagou Gold Deposit in the Jiaodong Peninsula

Geofluids ◽  
2019 ◽  
Vol 2019 ◽  
pp. 1-23 ◽  
Author(s):  
Peng Chai ◽  
Zeng-qian Hou ◽  
Hong-rui Zhang ◽  
Lei-lei Dong
Keyword(s):  
Fluid Inclusion ◽  
Gold Deposit ◽  
Fluid Inclusions ◽  
Gold Mineralization ◽  
Early Stage ◽  
Homogeneous System ◽  
Medium Temperature ◽  
Middle Stage ◽  
Primary Fluid ◽  
Three Stages

The Xiejiagou deposit is a representative medium-sized gold deposit in Jiaodong the Peninsula, which contains gold reserves of 37.5 t. The orebodies are hosted in the Linglong biotite granite with a zircon LA-ICP-MS U–Pb age of 160.5±1.3 Ma (N=15, MSWD=1.2) and are characterized by disseminated- or stockwork-style ores. Mineralization and alteration are structurally controlled by the NE-striking fault. Three stages of mineralization were identified with the early stage being represented by (K-feldspar) sericite quartz pyrite, the middle stage by quartz gold polymetallic sulfide, and the late stage by quartz carbonate. Ore minerals and gold mainly occurred in the middle stage. Three types of primary fluid inclusions were distinguished in the Xiejiagou deposit, including carbonic-aqueous, pure carbonic, and aqueous inclusions. The primary fluid inclusions of the three stages were mainly homogenized at temperatures of 262–386°C, 192–347°C, and 137–231°C, with salinities of 2.22–8.82, 1.02–11.60, and 1.22–7.72 wt% NaCl equivalent, respectively. These data indicate that the initial ore-forming fluids were a medium temperature, CO2-rich, and low-salinity H2O–CO2–NaCl homogeneous system, and the ore-forming system evolved from a CO2-rich mesothermal fluid into a CO2-poor fluid. Considering the fluid inclusion characteristics, H–O–S–Pb isotopes, and regional geological events, the ore-forming fluid reservoir was likely metamorphic in origin. Trapping pressures of the first two hydrothermal stages estimated from the carbonic aqueous inclusion assemblages were ~224–302 MPa and ~191–258 MPa, respectively. This suggests that the gold mineralization of the Xiejiagou gold deposit occurred at a lithostatic depth of ~7.2–9.7 km. Au(HS)2− was the most probable gold-transporting complex at the Xiejiagou deposit. Precipitation of gold was caused by a CO2 effervescence of initial auriferous fluids.

Analysis of Chinese herbal formulae recommended for COVID-19 in different schemes in China: A data mining Approach

2020 ◽  
Vol 23 ◽  
Author(s):  
LiWei Yin ◽  
YaCen Gao ◽  
ZiPing Li ◽  
MengYu Wang ◽  
KaiXin Chen
Keyword(s):  
Data Mining ◽  
Early Stage ◽  
Herbal Medicines ◽  
Chinese Herbs ◽  
Recovery Stage ◽  
Prescription Pattern ◽  
Middle Stage ◽  
Chinese Herbal ◽  
Severe Stage ◽  
Herbal Formulae

Background: Novel coronavirus pneumonia (NCP), or coronavirus disease 2019 (COVID-19), is a worldwide health threat that has affected millions of people globally. Traditional Chinese medicine (TCM) has been introduced for the treatment of COVID-19. However, efficacy differs among herbal medicines, and the ideal prescription pattern for TCM herbal formulae for COVID-19 treatment needs to be explored. Therefore, the data mining method has been used in this study to analyze the TCM prescription pattern for COVID-19. Objective: The aim of this study was to analyze the TCM prescription pattern in Regional Schemes in China for COVID-19 in order to provide a new reference for the use of TCM in COVID-19 treatment. Method: By searching the TCM treatment protocols of COVID-19 in 23 Regional Schemes, TCM syndromes and herbal medicines were analyzed by data mining. The Ancient and Modern Medical Case Cloud Platform (V2.1 personal Edition) was used to perform frequency statistics, correlation analysis, and cluster analysis. A total of 82 TCM syndromes and 171 Chinese herbal medicines were found. The course of the disease can be divided into the early stage, middle stage, severe stage, and recovery stage. Results: In the early stage, the focus is primarily on resolving dampness, dispelling cold, and diffusing the lungs. In the middle stage, the treatment priority is clearing heat and resolving toxins, promoting lung function, and relieving asthma. In the severe stage, the focus is on tonifying Qi, restoring Yang, and relieving depletion of Yin and Yang. In the recovery stage, the main treatment is to invigorate the spleen and regulate Qi, tonify Qi, nourish Yin, and clear residual disease evil. There are certain differences between the Regional Schemes and the Nation Schemes, but the core prescription pattern of the former is consistent with the latter. The effectiveness of these 171 Chinese herbs include but are not limited to inhibiting COVID-19, strengthening immune system function, preventing heart failure, acting as antioxidants, oxidative stress inhibitory effects, maintaining organ function, and improving leukocyte survival. Conclusion: This study may help to improve understanding of TCM herbal prescription pattern, practices, reveal the efficacy of combinations of Chinese herbs, and provide new ideas for TCM treatment for COVID-19.

scholarly journals Analysis of Activation Process of Carbon Black Based on Structural Parameters Obtained by XRD Analysis

Crystals ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 153
Author(s):  
Sang-Min Lee ◽  
Sang-Hye Lee ◽  
Jae-Seung Roh
Keyword(s):  
Carbon Black ◽  
Early Stage ◽  
Structural Parameters ◽  
Xrd Analysis ◽  
Activation Process ◽  
Co2 Gas ◽  
Carbon Black Surface ◽  
Black Surface ◽  
Last Stage ◽  
Pore Properties

In the present study, carbon black activated by CO2 gas was examined through XRD analysis, especially with regard to changes in its structural parameters. Based on the results, its activation process was thoroughly analyzed. The activation process was controlled by isothermally activating the carbon black inside a reaction tube through which CO2 gas flowed. With this approach, the degree of activation was varied as desired. At an early stage of the activation process, the amorphous fraction on the carbon black surface was preferentially activated, and later the less-developed crystalline carbon (LDCC) region inside the carbon black particles started to be activated. The latter process was attributable to the formation of pores inside the carbon black particles. As the activation process proceeded further, the more-developed crystalline carbon (MDCC) region started to be activated, thereby causing the pores inside the carbon black particles to grow larger. At the last stage of the activation process, La was found to be decreased to about 40 Å. This implied that the edges of the graphite crystals had been activated, thus causing the internal pores to grow and coalesce into larger pores. Activated conductive Super-P with enhanced pore properties is expected to have wide applications.

scholarly journals Pelatihan Strategi Penulisan Artikel Ilmiah pada Jurnal Bereputasi Nasional dan Internasional bagi Guru di SMKN 1 Sekotong Kabupaten Lombok Barat

2020 ◽  
Vol 1 (2) ◽  
pp. 139
Author(s):  
Taufik Suadiyatno ◽  
Dedi Sumarsono ◽  
Muliani Muliani ◽  
Moh. Arsyad Arrafii ◽  
Abdul Kadir Bagis
Keyword(s):  
Community Service ◽  
Early Stage ◽  
Scientific Article ◽  
Service Program ◽  
Evaluation Stage ◽  
Three Stages ◽  
Implementation Stage ◽  
Program Team

This community service program aimed to improve teachers’ anthusiastic in SMKN 1 Sekotong, West Lombok to conduct articles to be published in national accredited and international journal. The method used in this program divided into three stages such as 1) early stage includes koordination between the program team with the principle of SMKN 1 Sekotong; 2) implementation stage includes scientific article training; and 3) evaluation stage that used as the overview of the next program. The materials in this program was presented mostly in term of describing the technique of writing good articles therefore they deserve to be published in national accredited or international journal. This community service program was conducted in SMKN 1 Sekotong which was followed by the pcinciple and 23 teachers. The conclusion of this program was there was an improvement of teachers’ anthusiastic to publish their scientific articles in national accredited and international journal.

scholarly journals CERAMIC ASSEMBLAGES OF THE THIRD QUARTER OF THE 15th CENTURY FROM THE FUNA CASTLE: UTENSILS OF THE «GARRISON KITCHEN»

2020 ◽  
Vol 34 (1) ◽  
pp. 31-67
Author(s):  
I. B. Teslenko
Keyword(s):  
Comparative Analysis ◽  
Historical Events ◽  
Archaeological Evidence ◽  
The Third ◽  
15Th Century ◽  
The Crimea ◽  
Three Stages ◽  
Last Stage ◽  
Ceramic Assemblages

The Funa fortress is located in southern Crimea and is one of the reference architectural and archaeological complexes of the Northern Pontic Region with precise date of existence. The fortress was built by Mangup authorities near 1423 on the border with possessions of Genoese and was destroyed in a fire during the Turkish invasion of the Crimea in 1475. The detailed chronology of the site which includes three stages of its construction history — 1423, 1425—1450s and 1459—1475, has been developed so far. So it becomes possible to clarify the dating of ceramic finds in line with these periods also. Ceramic assemblages of the last stage from the layers of fire and destruction of 1475 are the most representative. There is the complex from courtyard 1 among them. The ceramic collection includes 101 and 163 fully or partially reconstructed vessels respectively. There are large and average household containers, various kitchen utensils and tableware, both of the local Crimean production and import (Miletus Ware, Spanish Luster and Blue and White Ware, Fritware). The comparative analysis of artefacts made it possible to establish the chronological changes in ceramic assemblages during 25 years. Moreover, statistical and typological studies of the pottery from the layer of fire demonstrated a set of vessels there is suitable for cooking and table setting for at least 40 people. Large number of luxury tableware for diverse using and their location in the context allow suggest that there was a large feast on the platform above the «kitchen», and the remains of this banquet were not removed. According to the archaeological evidence as well as analysis of historical events the inhabitants of the fortress could burn it themselves before Turkish invasion and retreat to the capital of the principality at Mangup. Perhaps the remains of a farewell feast arranged just before leaving was fixed archaeologically.

scholarly journals Relationships between Pathological Patterns and Quality of Life: Pathway Analysis

2013 ◽  
Vol 2013 ◽  
pp. 1-9 ◽  
Author(s):  
Shin-Woong Cho ◽  
Young-Jae Park ◽  
Sang-Chul Lee ◽  
Jaemin Ryu ◽  
Young-Bae Park ◽  
...  
Keyword(s):  
Quality Of Life ◽  
Pathway Analysis ◽  
Early Stage ◽  
General Health Questionnaire ◽  
Blood Stasis ◽  
Health Questionnaire ◽  
Pathway Model ◽  
Middle Stage ◽  
Yin Deficiency

Purpose.The purpose of our study was to examine the relationships between pathological patterns and self-rated quality of life (QoL).Methods.A total of 426 Korean subjects participated in this study (male : female = 154 : 272). The subjects were asked to complete Yin Deficiency (YD), Qi Deficiency (QD), Food Stagnation (FS), Blood Stasis (BS), Phlegm, and Seven Emotions Impairment (SEI) pattern Questionnaires and the General Health Questionnaire (GHQ). We formed a pathway model consisting of pathological patterns and QoL questionnaire scores and examined which pathological patterns resulted in decreased QoL using path analysis.Results.Our pathway model had satisfactory fitness levels (GFI = 0.975, NFI = 0.984, and CFI = 0.984) and showed that Phlegm and SEI patterns directly resulted in decreased QoL, whereas QD, YD, FD, and BS indirectly resulted in decreased QoL. The pathway model suggested that the severity or stage of decreased QoL may be estimated by pathological patterns: QD and YD patterns are associated with the early stage; FS and BS patterns are associated with the middle stage; Phlegm and SEI are associated with the later stage of decreased QoL.Conclusion.Our results suggest that pathological patterns directly or indirectly affect decreases in QoL.

scholarly journals The Design Process at Le Corbusier, Case of the Ronchamp Chapel

2019 ◽  
Vol 1 (1) ◽  
pp. 1275-1282
Author(s):  
Nadjat Outmoune ◽  
Abdelmalek Arrouf
Keyword(s):  
Empirical Studies ◽  
Data Gathering ◽  
Le Corbusier ◽  
Generic Model ◽  
Design Activity ◽  
Genetic Method ◽  
Second Stage ◽  
Three Stages ◽  
Last Stage

AbstractThis work falls within the empirical studies of design activity. Its project is to understand Le Corbusier's designing way and how does he work and structure his design processes. Doing so, it jumps above the descriptive and doctrinal knowledge of objects produced by “Le Corbusier” to study the actions and mechanisms that led to them.To achieve its aim, this study uses genetic method, developed by P.M. De Biasi of literary origin, this research method is made of three stages. The first one, which is of empirical nature, is one of data gathering. It leads to the establishment of genesis tables and to the classification of the all collected documents. The second stage, makes the analysis of all the collected documents one by one. It allows the restitution of the creative process of one projects “Le Corbusier” which is “la chapelle de Notre Dame du haut de Ronchamp”. The last stage is finally that define the design processe of the this project. The results show that the design activity of “Le Corbuiser” obeys the overall logic of one generic model which may be called his individual designing style.

Increase of the content of QP47 (a desiccation-associated nuclear protein) in embryo cells during maturation of pea seeds

1994 ◽  
Vol 4 (4) ◽  
pp. 421-429 ◽  
Author(s):  
Donato Chiatante ◽  
Paola Brusa
Keyword(s):  
Cell Proliferation ◽  
Nuclear Protein ◽  
Early Stage ◽  
Seed Maturation ◽  
Radicle Elongation ◽  
Embryo Cells ◽  
Last Stage ◽  
Pea Seeds ◽  
Metabolic Activities

AbstractA nuclear protein (QP47) is synthesized during the last stage of seed maturation when the embryo cells start to dehydrate and enter a condition of metabolic quiescence. This protein is localized in the nucleoplasm surrounding the chromosomes. The correlation existing between the synthesis of QP47 and arrest of cell proliferation, suggests that the presence of this protein in the nucleus could influence its metabolic activities. This hypothesis is supported by the fact that degradation of this protein precedes resumption of cell proliferation during the early stage of radicle elongation.

Establishing achievable benchmarks for quality improvement in systemic therapy for early-stage breast cancer.

2016 ◽  
Vol 34 (7_suppl) ◽  
pp. 263-263
Author(s):  
Melanie Powis ◽  
Alejandro Gonzalez ◽  
Rinku Sutradhar ◽  
Katherine Enright ◽  
Nathan Taback ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Quality Improvement ◽  
Systemic Therapy ◽  
Early Stage ◽  
Quality Care ◽  
Early Stage Breast Cancer ◽  
High Quality ◽  
Eligibility Criteria ◽  
High Performing ◽  
The Individual

263 Background: Setting realistic targets for performance on quality indicators (QI) is a consistent challenge in quality improvement. The purpose of this study was to utilize administrative data to define achievable targets for QI in the early stage breast cancer (EBC) population in relation to systemic therapy (ST) delivery based on best performers. Methods: Deterministically linked administrative healthcare databases were used to identify EBC cases diagnosed 2006 – 2010 in Ontario, Canada. Panel of previously established QIs for systemic therapy was applied to patients who met eligibility criteria for the individual indicators. Institutions with less than 10 eligible patients for a specific indicator were excluded. An empiric benchmark was defined as the proportion of patients meeting the indicator from institutions accounting for the top decile of eligible patients. Results: We identified 28,303 EBC patients who received surgery of which 12,252 received adjuvant chemotherapy. Benchmark results are summarized in Table. Conclusions: Many institutions fell considerably below the benchmark. Further analysis of institution-level drivers of high quality care is required to help characterize high performing institutions. [Table: see text]

Evaluation of Angus, Charolais and Hereford as terminal sire breeds on Hereford and first-cross cows. I. Growth of progeny

1995 ◽  
Vol 46 (6) ◽  
pp. 1231 ◽  
Author(s):  
H Hearnshaw ◽  
PF Arthur ◽  
D Johnston ◽  
PD Stephenson
Keyword(s):  
Average Daily Gain ◽  
Growth Potential ◽  
High Quality ◽  
Weaning Weight ◽  
Adequate Nutrition ◽  
Breed Differences ◽  
Medium Quality ◽  
Terminal Sire ◽  
Daily Gain ◽  
Sire Breed

Pre-weaning growth of 482 Angus, Charolais and Hereford sired progeny out of straightbred Hereford (H x H) , and first-cross Brahman x Hereford (B x H) , Simmental x Hereford (S x H) and Friesian x Hereford (F x H) dams was evaluated. The dams grazed either high, medium or low quality pasture (pre-weaning pasture system) at Grafton, NSW. Progeny of dams from high quality pre-weaning pasture were slaughtered at 281 days of age for the vealer market. The progeny of dams from medium and low quality pre-weaning pastures were evaluated for post-weaning growth on pasture, on commercial properties in temperate NSW. They were slaughtered for either the yearling domestic (both sexes) or heavy export steer markets. Average daily gain (ADG) for the entire pre-weaning period was greater (P < 0.05) for Charolais (845 g/day) than Angus (790 g/day) and Hereford (783 g/day) sired progeny. This resulted in a higher ( P < 0.05) weaning weight of Charolais sired progeny of dams on high or medium quality pre-weaning pasture. On low quality pasture, however, sire breed differences in weaning weight were not significant (P > 0.05). This indicates that adequate nutrition should be provided for Charolais sired progeny to express their higher growth potential. Post-weaning ADG of Charolais sired progeny was higher (P < 0.05) than that of Angus or Hereford sired progeny, resulting in 14 months liveweight (for yearling domestic cattle) of 370, 345 and 345 kg and 27 months liveweight (for heavy export steers) of 635, 585 and 569 kg for Charolais, Angus and Hereford sired progeny respectively. Progeny of B x H dams on medium or low quality pre-weaning pastures had the highest pre-weaning ADG and weaning weight, but the lowest post-weaning ADG. This resulted in 27 months liveweight of 558, 582, 628 and 616 kg for steer progeny from H x H, B x H, S x H and F x H dams respectively.

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