Surface and in-depth characterization of TiC/C and Ti(C,N) layers by means of AES and Factor analysis

1995 ◽  
Vol 353 (3-4) ◽  
pp. 468-472 ◽  
Author(s):  
A. John
Keyword(s):  
Factor Analysis

scholarly journals Short Communication: Habitat characterization of Aristolochia baetica L. in Tessala Mount, Western Algeria

2018 ◽  
Vol 19 (5) ◽  
pp. 1632-1641
Author(s):  
HAKEMI ZAHRA ◽  
MEHDADI ZOHEIR ◽  
CHERIFI KOUIDER ◽  
AISSET AMEL
Keyword(s):  
Factor Analysis ◽  
Short Communication ◽  
Current Investigation ◽  
Floristic Inventory ◽  
Habitat Characterization ◽  
Correspondence Factor Analysis ◽  
Western Algeria ◽  
Plant Data ◽  
Hierarchical Ascending Classification

Zahra H, Zoheir M, Ali L, Kouider C, Amel A. 2018. Short Communication: Habitat characterization of Aristolochia baeticaL. in Tessala Mount, Western Algeria. Biodiversitas 19: xxxx. The aim of the current investigation was to study the characterization ofthe habitat of Aristolochia baetica L., an Ibero-Mauretanian species, present in Tessala Mount (West of Algeria). Twenty-fourphytoecological surveys were realized on eight stations (St1-St8) in which the species is present. The floristic inventory allowed us toidentify 68 species which are part of the floristic of A. Baetica, distributed in 31 botanical families; 6 biological and 19 biogeographicaltypes. The assessment of edaphic and plant data using correspondence factor analysis (CFA) and hierarchical ascending classification(HAC) showed that A. baetica is a member of plant training of scrublands and grows especially in stations at low heights with a highrate of limestone.

scholarly journals Bromatological and Microbiological Characterization of Andean Tubers Mashwa (Tropaeolum Tuberosum) and Oca (Oxalis Tuberosa)

2021 ◽  
Author(s):  
Cristian José Esparza Bonilla ◽  
Cesar Iván ◽  
Flores Mancheno ◽  
Tatiana Elizabeth Sánchez Herrera
Keyword(s):  
Factor Analysis ◽  
Analysis Of Variance ◽  
Aerobic Bacteria ◽  
Oxalis Tuberosa ◽  
Tropaeolum Tuberosum

The objective of this research was to analyze the bromatological and microbiological composition of Andean tubers, to determine whether their state of maturation influences their composition. Mashwa (Tropaeolum tuberosum) and oca (Oxalis tuberosa) tubers were analyzed. Different degrees of maturation (tender, ripe) were considered. In each analysis, three treatments were carried out, using 100g of sample. The data were analyzed through a two-factor analysis of variance with several samples per group. The average values obtained from the bromatological data of tender mashwa were: 12.33% protein, 0.87% fat, 5.17% ash and 6.41% moisture. The values for mature mashwa were: 15.27% protein, 1.00% fat, 6.74% ash and 5.85% moisture. For tender oca, the values were: 7.47% protein, 0.65% fat, 4.59% ash and 7.03% moisture. Finally, the values for mature oca were 8.92% protein, 0.64% fat, 5.40% ash and 6.03% moisture. In terms of the microbiological evaluation, a minimal presence of the following aerobic bacteria was observed: Stapylococus aureos, coliforms, Eschericha coli. The results showed that the microbiological values ​​for Andean tubers (mashwa and oca) were within the safe parameters, so the tubers are suitable for consumption. Keywords: bromatological, microbiological, Tropaeolum tuberosum, Oxalis tuberosa, maturation. RESUMEN El objetivo de esta investigación fue analizar la composición bromatológica, microbiológica, y determinar si el estado de maduración influye en la composición de los tubérculos andinos. Los tubérculos analizados, mashwa (Tropaeolum tuberosum) y oca (Oxalis tuberosa), donde se considero diferentes grados de maduración (tierno, maduro), en cada análisis se empleo 3 tratamientos utilizando 100g de muestra. Los datos fueron analizados mediante el programa Excel con un análisis de varianza de dos factores con varias muestras por grupo. El promedio obtenido en los datos bromatológicos de mashwa tierna son: proteína de 12,33%, grasa 0,87%, ceniza 5,17% y humedad 6,41%, mashwa madura 15,27% de proteína, 1,00% de grasa, 6,74% de ceniza y 5,85% de humedad, para la oca tierna en proteína de 7,47%, grasa 0,65%, ceniza 4,59% y humedad 7,03%, oca madura son de 8,92% de proteína, 0,64% de grasa, 5,40% de ceniza y 6,03% de humedad. En el caso de la evaluación microbiológica se observó la presencia mínima de Bacterias Aerobias, Stapylococus Áureos, Coliformes, Eschericha Coli. Determinando que los valores microbiológicos para los tubérculos andinos (mashwa, oca) se encuentran dentro de los parámetros por lo que están libres de patógenos y son aptos para el consumo. Palabras claves: bromatológico, microbiológico, Tropaeolum tuberosum, Oxalis tuberosa, maduración.

Sectorial substrate-integrated half-mode near-field sensors for biological liquid characterization

2014 ◽  
Vol 6 (3-4) ◽  
pp. 305-312 ◽  
Author(s):  
Nora Meyne ◽  
Arne F. Jacob
Keyword(s):  
Factor Analysis ◽  
Perturbation Theory ◽  
Aqueous Solutions ◽  
Quality Factor ◽  
Near Field ◽  
Calibration Method ◽  
Biological Liquid ◽  
Suitable Reference ◽  
5 Ghz

Two compact resonant near-field sensors are introduced for the characterization of aqueous solutions at 5 GHz. They are based on folded substrate-integrate circular half-mode resonators with a planar sensing tip. Owing to the planar design, the sensor is simple and cheap to manufacture, and a sample can be easily coupled to the resonator from the top. The operating principle of the sensor is explained and verified by both simulation and measurement. The radiation of the sensors is quantified by means of a quality factor analysis. Finally, a previously introduced calibration method based on the perturbation theory is applied to the sensors and its accuracy is improved by choosing more suitable reference materials.

Characterization of Laser-Arc deposited multilayer systems by means of AES, Factor Analysis and XPS

1997 ◽  
Vol 358 (1-2) ◽  
pp. 304-307 ◽  
Author(s):  
A. John ◽  
Hans-Joachim Scheibe ◽  
Holger Ziegele ◽  
Steffen Oswald
Keyword(s):  
Factor Analysis ◽  
Multilayer Systems
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