Statistical analysis of the physical properties of ternary blended concrete

2021 ◽  
Vol 7 (1) ◽  
Author(s):  
Siripurapu Sowjanya ◽  
Sirgam Adiseshu
Keyword(s):  
Statistical Analysis ◽  
Physical Properties ◽  
Ternary Blended Concrete

Characterization of structure and air permeability of aromatherapic terry textile

2016 ◽  
Vol 28 (1) ◽  
pp. 2-17 ◽  
Author(s):  
Salvinija Petrulyte ◽  
Deimante Vankeviciute ◽  
Donatas Petrulis
Keyword(s):  
Statistical Analysis ◽  
Physical Properties ◽  
Design Methodology ◽  
Air Permeability ◽  
Factorial Designs ◽  
Linear Type ◽  
Content Type ◽  
Mathematical Equations ◽  
Binder Concentration

Purpose – The purpose of this paper is to investigate the physical properties of smart aromatherapic ramie/cotton terry fabrics containing microcapsules (MC) with essential Eucalyptus oil. Design/methodology/approach – Terry fabrics are manufactured by changing the weft density. The air permeability is determined for grey and microencapsulated textile. The factorial designs are made. For informative experiment the linear type of regression is analysed. Development of physical properties of microencapsulated terry fabrics is discussed. Findings – The air permeability of aromatherapic terry fabrics is determined. All statistical analysis is performed. Appropriate conclusions about the influence of fabric’s structure and microencapsulating process on terry fabric quality are made. Originality/value – To date there are no investigations concerning terry textiles with fragrance MC. This study developed analysis and empiric mathematical equations suitable for evaluating and designing terry fabrics with the air permeability required. Assessment of the influence of fabric’s weft density and binder concentration for the air permeability of terry textile is proposed.

scholarly journals Statistical Methods for Quality Equivalence of Topical Products. 0.5 mg/g Betamethasone Ointment as a Case-Study

Pharmaceutics ◽  
2020 ◽  
Vol 12 (4) ◽  
pp. 318 ◽  
Author(s):  
Jordi Ocaña ◽  
Toni Monleón-Getino ◽  
Virginia Merino ◽  
Daniel Peris ◽  
Lluís Soler
Keyword(s):  
Statistical Analysis ◽  
Confidence Interval ◽  
Physical Properties ◽  
Reference Product ◽  
Quality Parameters ◽  
European Medicines Agency ◽  
Draft Guideline ◽  
Equivalence Test ◽  
Test Product

This study examines the statistical implications, and their possible implementation, of the “Draft guideline on quality and equivalence of topical products” issued by the European Medicines Agency in 2018, with particular focus on the section devoted to quality equivalence of physical properties. A new confidence interval to conduct the quality equivalence test and a way to cope with the multiplicity of quality parameters are presented and discussed. As an example, the results and the statistical analysis of a study on betamethasone 0.5 mg/g ointment are presented. It is suggested that the equivalence limits proposed in the draft guideline are overly strict: It is as difficult to declare quality equivalence between two packaging formats of the same reference product as to declare quality equivalence between the reference and the test product.

scholarly journals Statistical deprojection of galaxy pairs

2018 ◽  
Vol 614 ◽  
pp. A45 ◽  
Author(s):  
Laurent Nottale ◽  
Pierre Chamaraux
Keyword(s):  
Statistical Analysis ◽  
Probability Distribution ◽  
Physical Properties ◽  
Previous Analysis ◽  
Probability Distributions ◽  
Second Step ◽  
Line Of Sight ◽  
Mass Determination ◽  
Dynamical Parameters

Aims. The purpose of the present paper is to provide methods of statistical analysis of the physical properties of galaxy pairs. We perform this study to apply it later to catalogs of isolated pairs of galaxies, especially two new catalogs we recently constructed that contain ≈1000 and ≈13 000 pairs, respectively. We are particularly interested by the dynamics of those pairs, including the determination of their masses. Methods. We could not compute the dynamical parameters directly since the necessary data are incomplete. Indeed, we only have at our disposal one component of the intervelocity between the members, namely along the line of sight, and two components of their interdistance, i.e., the projection on the sky-plane. Moreover, we know only one point of each galaxy orbit. Hence we need statistical methods to find the probability distribution of 3D interdistances and 3D intervelocities from their projections; we designed those methods under the term deprojection. Results. We proceed in two steps to determine and use the deprojection methods. First we derive the probability distributions expected for the various relevant projected quantities, namely intervelocity vz, interdistance rp, their ratio, and the product $r_p v_z^2$, which is involved in mass determination. In a second step, we propose various methods of deprojection of those parameters based on the previous analysis. We start from a histogram of the projected data and we apply inversion formulae to obtain the deprojected distributions; lastly, we test the methods by numerical simulations, which also allow us to determine the uncertainties involved.

scholarly journals The Effect of Combination of Hydroxypropylmethylcellulose and Carboxymethylcellulose Sodium Polymers to The Physical Properties of Celery (Apium graveolens L.) Ethanolic Extract Patch

2020 ◽  
Vol 16 (2) ◽  
pp. 146
Author(s):  
Dian Eka Ermawati ◽  
Galuh Kartikasari
Keyword(s):  
Statistical Analysis ◽  
Moisture Content ◽  
Physical Properties ◽  
Hydroxypropyl Methylcellulose ◽  
Ethanolic Extract ◽  
Ethanol Extract ◽  
Apium Graveolens ◽  
Paired Samples ◽  
Folding Endurance ◽  
Gastric Irritation

Celery herbs (Apium graveolens L.) contain apigenin compounds (flavonoids) that are effective as antihypertensiv. Celery herbs used in the form of decoction and oral preparations have a deficiency that is voluminous and can cause gastric irritation. Patches were chosen because it can prevent gastric irritation and reduce the frequency of drug administration because the drug is delivered over the skin with a long duration. This study aimed to know the effect of variations in the ratio of the concentrations of hydroxypropyl methylcellulose (HPMC) and carboxymethylcellulose sodium (CMC sodium) polymers to the physical properties of celery herbs ethanol extract patch.This study was conducted with maceration of celery herbs using 96% ethanol and then dispersed in patch made with variations in the concentrations ratio of HPMC and CMC sodium polymers of 3:1, 1:1, and 1:3. Patches were tested for physical properties including organoleptic, pH, thickness, weight, folding endurance, and moisture content. Statistical analysis of test data used One Way ANOVA and Paired Samples T Test.The results of statistical analysis showed that the increase concentrations ratio of CMC sodium polymer in the combination of HPMC and CMC sodium polymers could increase the thickness, weight, and moisture content of celery herbs ethanol extract patch. The best patch was formula 2 with the same concentration ratio of HPMC and CMC sodium polymers because it showed the best results with a pH 6,12-6,29, thickness 1,37-1,53 mm, weighting 2,24-2,52 gram, folding endurance more than 300 times, and the moisture content was quite stable.  

Statistical analysis of the physical properties of the 20 naturally occurring amino acids

1985 ◽  
Vol 4 (1) ◽  
pp. 23-55 ◽  
Author(s):  
Akinori Kidera ◽  
Yasuo Konishi ◽  
Masahito Oka ◽  
Tatsuo Ooi ◽  
Harold A. Scheraga
Keyword(s):  
Amino Acids ◽  
Statistical Analysis ◽  
Physical Properties ◽  
Naturally Occurring

Statistical Evaluation of Variations in Rubber Processes and Correlation in Physical Properties

1947 ◽  
Vol 20 (1) ◽  
pp. 288-300 ◽  
Author(s):  
J. M. Buist ◽  
O. L. Davies
Keyword(s):  
Statistical Analysis ◽  
Natural Rubber ◽  
Physical Properties ◽  
Statistical Methods ◽  
Statistical Evaluation ◽  
Maximum Amount ◽  
Raw Material ◽  
Technological Information ◽  
Similar Program ◽  
Points Of View

Abstract The scope for the application of statistics to the field of rubberlike rnaterials is extensive, and various authors have already used statistical methods. Statistical methods derive the maximum amount of information from the results of an investigation, and at the same time supply a means of assessing the reliability and value of the information extracted. The effect of a variety of different blacks at various volume loadings on the properties of natural rubber and Neoprene-GN have been described. In the present paper the data are examined from other points of view, viz., the reproducibility of the results and the relations between the various properties. The main purpose of these investigations was to obtain the technological information already reported. At the same time, however, the program was designed as far as practicable to give information on the testing errors. Further useful information on the relation between the properties could be obtained by the application of the methods of statistical analysis. The program of experimental work with natural rubber covered a period of three months (November 1940–February 1941) and, to obviate as far as possible variations in the raw material, a quantity sufficient for the whole program was master-batched at the outset. The carbon blacks used were from normal supply, but special quantities were kept for this program. In 1942 a similar program was carried out with Neoprene-GN. The details of the mixes used, mixing procedure, and conditions of curing, have been given previously. Each mix was repeated three times on different days, and repeat determinations on the physical properties were carried out.

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