Chinese Greenware Raw Materials: Principal Component Analysis of Major and Minor Chemical Constituents

1995 ◽  
Vol 49 (7) ◽  
pp. 981-986 ◽  
Author(s):  
Choon-Teck Yap ◽  
Younan Hua

Principal component analysis is used in the study of 24 raw materials for the production of Chinese greenware porcelains, known as Yue ware, Longquan ware, Southern Song Guan ware, Ge ware, Ru ware, Linru ware, Jun ware, and Yaozhou ware. The results of this study give reasonably good indications of the possible raw materials used in the production of these greenwares.

1994 ◽  
Vol 49 (7-8) ◽  
pp. 759-766
Author(s):  
C. T. Yap ◽  
Younan Hua

Abstract This work is based on published analytical data of 69 pieces of Chinese greenware bodies from seven famous wares: Yue, Longquan, Southern Song Guan, Ru, Jun, Yaozhou, and Ge. It is possible to do provenance studies of these wares by the application of principal component analysis using major and minor chemical constituents (Si02, Al2O3, Fe2O3, CaO, MgO, K2O , Na2O , and TiO2). The results show that not only are northern and southern greenwares completely distinct in the raw materials used, but in addition the southern greenwares are reasonably well segreated into groups belonging to Yue ware, Longquan ware (white body), Longquan ware (black body) and Southern Song Guan ware. Our analysis also confirms the production of Ge ware in the Longquan area.


2013 ◽  
Vol 3 (3) ◽  
Author(s):  
Tia Setiawati

AbstrakKerabat liar ubi jalar Ipomoea trifida asal Citatah Jawa Barat potensial digunakan dalam program pemuliaan tanaman ubi jalar (Ipomoea batatas (L.) Lam.) Untuk mengetahui diversitas genetik I. trifida  dilakukan pengamatan terhadap karakter kromosom. Bahan tanaman yang digunakan  adalah 10 spesies I. trifida berumbi. Hubungan kekerabatan antar spesies diketahui melalui analisis klaster dan Analisis Komponen Utama/Principal Component Analysis (PCA). Hasil pengamatan menunjukkan pengujian pada 10 aksesi I. trifida berumbi dengan menggunakan 9 karakter kromosom menghasilkan jarak ketidakmiripan (Euclidean coeffisien) yang berkisar 1,75 – 6,22 dan menunjukkan diversitas yang luas. Dendogram yang dihasilkan pada jarak ketidakmiripan 5,23 menunjukkan terbentuknya 3 klaster utama. Analisis Komponen Utama (PCA) menghasilkan 2 komponen utama pertama (PC1 dan PC2) yang telah dapat menjelaskan 89,64% dari total variasi. Kata kunci : Ipomoea trifida, Analisis Klaster, Analisis Komponen UtamaAbstractWild relatives of sweet potato, Ipomoea trifida originated from Citatah West Java was potential use in plant breeding programs of Ipomoea batatas (L.) Lam. To determine the genetic diversity of I. trifida, observation on characters of chromosomes of I.trifida was conducted. Plant materials used ten accessions  of tubered-I. trifida. Relationship between species identified by cluster analysis and Principal Component Analysis (PCA). The results showed that the observation on the 10 accession of tubered-I. trifida using 9 characters chromosome produces dissimilarities distance (Euclidean coefficient) ranging from 1.75 to 6.22. Dendogram generated  at a dissimilarity distance of 5.23 showed the formation of three main clusters. Principal Component Analysis (PCA) produced first two principal component (PC1 and PC2), which has been able to explain 89.64% of the total variation.Keyword  : Ipomoea trifida, Clustering Analysis, Principal Component Analysis


2020 ◽  
Vol 152 ◽  
pp. 104284 ◽  
Author(s):  
Carla Larissa Costa Meira ◽  
Cleber Galvão Novaes ◽  
Franciele Castro Novais ◽  
Vilisaimon da Silva de Jesus ◽  
Djalma Menezes de Oliveira ◽  
...  

VASA ◽  
2012 ◽  
Vol 41 (5) ◽  
pp. 333-342 ◽  
Author(s):  
Kirchberger ◽  
Finger ◽  
Müller-Bühl

Background: The Intermittent Claudication Questionnaire (ICQ) is a short questionnaire for the assessment of health-related quality of life (HRQOL) in patients with intermittent claudication (IC). The objective of this study was to translate the ICQ into German and to investigate the psychometric properties of the German ICQ version in patients with IC. Patients and methods: The original English version was translated using a forward-backward method. The resulting German version was reviewed by the author of the original version and an experienced clinician. Finally, it was tested for clarity with 5 German patients with IC. A sample of 81 patients were administered the German ICQ. The sample consisted of 58.0 % male patients with a median age of 71 years and a median IC duration of 36 months. Test of feasibility included completeness of questionnaires, completion time, and ratings of clarity, length and relevance. Reliability was assessed through a retest in 13 patients at 14 days, and analysis of Cronbach’s alpha for internal consistency. Construct validity was investigated using principal component analysis. Concurrent validity was assessed by correlating the ICQ scores with the Short Form 36 Health Survey (SF-36) as well as clinical measures. Results: The ICQ was completely filled in by 73 subjects (90.1 %) with an average completion time of 6.3 minutes. Cronbach’s alpha coefficient reached 0.75. Intra-class correlation for test-retest reliability was r = 0.88. Principal component analysis resulted in a 3 factor solution. The first factor explained 51.5 of the total variation and all items had loadings of at least 0.65 on it. The ICQ was significantly associated with the SF-36 and treadmill-walking distances whereas no association was found for resting ABPI. Conclusions: The German version of the ICQ demonstrated good feasibility, satisfactory reliability and good validity. Responsiveness should be investigated in further validation studies.


2020 ◽  
Vol 4 (11) ◽  
pp. 676-681
Author(s):  
V.V. Sapozhnikova ◽  
◽  
A.L. Bondarenko ◽  

Aim: to determine the association between clinical laboratory parameters, the production of cytokines (IL-17A, -23, -33, -35), and specific IgM and IgG in the serum of patients with Lyme borreliosis without erythema migrans. Patients and Methods: complete blood count, the concentrations of IL-17A, -23, -33, -35, and the levels of specific IgM and IgG were measured during acute infection and convalescence (n=30). The control group included age- and sex-matched healthy individuals (n=30). Statistical analysis was performed using the StatSoft Statistica v 10.0 software (parametric and non-parametric methods and multifactorial analysis, i.e., principal component analysis). Results: most (80%) patients with Lyme borreliosis without erythema migrans are the people of working age. In most patients, the combination of the specific antibodies against Borrelia afzelii and Borrelia garinii (76.7%) and severe intoxication and inflammatory process (100%) were detected. Moderate and severe disease associated with meningism was diagnosed in 90% and 10%, respectively. The mean duration of hectic period was 8.3±1.27 days. Abnormal ECG was reported in 40% of patients, i.e., conduction abnormalities in 20%, sinus bradycardia in 16.7%,and sinus tachycardia in 3.3%. The clinical laboratory signs of hepatitis without jaundice were identified in 26.7%. During treatment, the significant reduction in band and segmented neutrophil counts as well as the significant increase in platelet count were revealed compared to these parameters at admission. Abnormal cytokine levels (i.e., the increase in IL-17A, -23, -33 and the deficiency of IL-35) were detected. Conclusions: multifactorial analysis has demonstrated that the severity of immunological abnormalities in patients with Lyme borreliosis without erythema migrans is associated with fever, cardiac and liver disorders, the high levels of IL-23 and IL-33, and the lack of IL-35 and specific IgM and IgG. KEYWORDS: tick-borne borreliosis, Lyme disease without erythema migrans, clinical laboratory signs, cytokines, specific antibodies, multifactorial analysis, principal component analysis. FOR CITATION: Sapozhnikova V.V., Bondarenko A.L. Multifactorial analysis of clinical laboratory signs, the levels of IL-17A, IL-23, IL-33, IL-35, and specific antibodies in the serum of patients with Lyme borreliosis without erythema migrans. Russian Medical Inquiry. 2020;4(11):676–681. DOI: 10.32364/2587-6821-2020-4-11-676-681.


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