Instantaneous Determination of Paracetamol Aceclofenac Using Stability Indication and Atr-Ftir Assessment Techniques

2020 ◽  
Vol 12 (sp2) ◽  
Keyword(s):  
Assessment Techniques

scholarly journals AN EVALUATION ON THE FORMATION AND CLASSIFICATION OF SOME SELJUK CERAMIC TECHNIQUES

2020 ◽  
Vol 9 (76) ◽  
Keyword(s):  
Historical Development ◽  
Islamic Art ◽  
New Classification ◽  
Artistic Value ◽  
Ceramic Art ◽  
Assessment Techniques ◽  
Research Objects ◽  
Historical Developments

In this study, based on the data through related literature and visual data, three different kinds of Ceramic Techniques of Seljuq’s and their historical developments are examined. Determination of “independent invention” which is often repeated in literature regarding “Enameled ware” (overglaze polychrome-painted ware) and “Underglaze-paint” ornamentation techniques studied through a different viewpoint was examined and correctness of aspects that may rise are argued. In this study where “Underglaze-paint” technique, “Enameled wares” and “Seljuk Whitewares” are used as research objects; it aims to enlighten primarily the formation of the product by mentioned techniques and its historical development. For this aim, relevant techniques are put into the general frame of Islamic Art and examined in such a form that provides a holistic perspective. Later on the study, measurement of the artistic value of solid production and criteria in this measurement are problematized. Accordingly, findings gained through new assessment techniques regarding the evaluation of historical productions are applied to Seljuk ceramic techniques -which is the object of the research- and new classification elements and titles are proposed. Keywords: Seljuk ceramic art, enameled ware and underglaze-paint techniques, Seljuk whitewares

Determination of product shelf life and activation energy for five drugs of abuse

1991 ◽  
Vol 37 (3) ◽  
pp. 398-402 ◽  
Author(s):  
Geoffrey Anderson ◽  
Milda Scott
Keyword(s):  
Activation Energy ◽  
Carboxylic Acid ◽  
Experimental Design ◽  
Shelf Life ◽  
Drugs Of Abuse ◽  
Stability Assessment ◽  
Critical Step ◽  
Assessment Techniques

Abstract Estimating the shelf life of reagents and controls is a critical step in evaluating new formulations. We describe several stability assessment techniques, giving particular attention to experimental design. Activation energy was experimentally determined for five major drugs of abuse and metabolites: morphine, 11-nor-delta-9-tetrahydrocannabinol-9-carboxylic acid, amphetamine, phencyclidine, and benzoylecgonine. The use of activation energy in establishing shelf life is illustrated for SENTRY (Hycor Biomedical Inc.) Drugs of Abuse Screen Control, a liquid urine-based product.

Importance of Model Parameters in the Assessment of Intra-oral Remineralization

1992 ◽  
Vol 71 (3_suppl) ◽  
pp. 879-883 ◽  
Author(s):  
J.M. Ten Cate ◽  
Y.M. Van De Plassche-Simons ◽  
A.J.P. Van Strijp
Keyword(s):  
Statistical Significance ◽  
Model Parameters ◽  
Variable Parameters ◽  
Physiological Processes ◽  
Large Numbers ◽  
Demineralized Enamel ◽  
The World ◽  
Assessment Techniques ◽  
The Many

Since the introduction of the Intra-oral Cariogenicity Test by Koulourides et al. (1974), many groups around the world have been developing and using intra-oral models to test new caries-preventive products, as well as to study physiological processes in the oral cavity. In spite of the large numbers of papers reporting these methods, very little research has been done to determine the importance of the many variable parameters which influence the performance of these models. Among these, the following can be identified: (a) panelist criteria, (b) the use of sound vs. pre-demineralized enamel of human or bovine origin, (c) the use of gauze or a recess to accumulate plaque, (d) the method to create incipient lesions, (e) the duration of the experiment, (f) the number of panelists required for statistical significance to be obtained, (g) the assessment techniques for mineral and/or fluoride uptake/loss, and (h) the choice of contralateral, ‘cross-over’, or ‘monadic’ experimental designs. Our results, supported by data from the literature, indicate that the choices made with respect to these parameters are of paramount importance in determination of the outcome of the respective study.

scholarly journals How Precise Is Dental Volumetric Tomography in the Prediction of Bone Density?

2012 ◽  
Vol 2012 ◽  
pp. 1-8 ◽  
Author(s):  
Hakan Bilhan ◽  
Selda Arat ◽  
Onur Geckili
Keyword(s):  
Bone Density ◽  
Micro Ct ◽  
Hounsfield Units ◽  
Surgical Guide ◽  
Macroscopic Structure ◽  
Assessment Techniques ◽  
The Right ◽  
Formalin Fixed ◽  
Density Assessment

Objectives. The aim of this study was to review the bone density assessment techniques and evaluate the macroscopic structure of bone specimens scored by Hounsfield Units (HUs) and decide if they are always in congruence.Methods. The mandible of a formalin-fixed human cadaver was scanned by dental volumetric tomography (DVT) for planning of the specimen positions and fabrication of a surgical guide and a surgical stent was fabricated afterwards. Bone cylinders of 3.5 mm diameter and 5 mm length, were excised from the mandible using the surgical stent with a slow speed trephine drill. After removal of the cylinders two more scans were performed and the images of the first scan were used for the determination of the HU values. The removed bone cylinder was inspected macroscopically as well by micro-CT scan.Results. The highest HU values were recorded in the interforaminal region, especially in the midline (408–742). Posterior regions showed lower HU values, especially the first molar regions (22–61 for the right; 14–66 for the left first molar regions).Conclusion. Within the limitations of this pilot study, it can be concluded that HU values alone could be a misleading diagnostic tool for the determination of bone density.

Galactic orbits of stars

1966 ◽  
Vol 25 ◽  
pp. 93-97
Author(s):  
Richard Woolley
Keyword(s):  
Globular Cluster ◽  
Potential Field ◽  
High Velocity ◽  
Velocity Vector ◽  
Variable Stars ◽  
The Sun ◽  
Proper Motions ◽  
Rr Lyrae ◽  
The Galaxy

It is now possible to determine proper motions of high-velocity objects in such a way as to obtain with some accuracy the velocity vector relevant to the Sun. If a potential field of the Galaxy is assumed, one can compute an actual orbit. A determination of the velocity of the globular clusterωCentauri has recently been completed at Greenwich, and it is found that the orbit is strongly retrograde in the Galaxy. Similar calculations may be made, though with less certainty, in the case of RR Lyrae variable stars.

Distance to SN 1987A and the LMC

1999 ◽  
Vol 190 ◽  
pp. 549-554
Author(s):  
Nino Panagia
Keyword(s):  
Angular Size ◽  
Large Magellanic Cloud ◽  
Magellanic Cloud ◽  
Light Curves ◽  
Distance Modulus ◽  
Absolute Size ◽  
Sn 1987A

Using the new reductions of the IUE light curves by Sonneborn et al. (1997) and an extensive set of HST images of SN 1987A we have repeated and improved Panagia et al. (1991) analysis to obtain a better determination of the distance to the supernova. In this way we have derived an absolute size of the ringRabs= (6.23 ± 0.08) x 1017cm and an angular sizeR″ = 808 ± 17 mas, which give a distance to the supernovad(SN1987A) = 51.4 ± 1.2 kpc and a distance modulusm–M(SN1987A) = 18.55 ± 0.05. Allowing for a displacement of SN 1987A position relative to the LMC center, the distance to the barycenter of the Large Magellanic Cloud is also estimated to bed(LMC) = 52.0±1.3 kpc, which corresponds to a distance modulus ofm–M(LMC) = 18.58±0.05.

International determination of the total motion of the pole

1961 ◽  
Vol 13 ◽  
pp. 29-41
Author(s):  
Wm. Markowitz
Keyword(s):  
Secular Motion ◽  
The Future

A symposium on the future of the International Latitude Service (I. L. S.) is to be held in Helsinki in July 1960. My report for the symposium consists of two parts. Part I, denoded (Mk I) was published [1] earlier in 1960 under the title “Latitude and Longitude, and the Secular Motion of the Pole”. Part II is the present paper, denoded (Mk II).

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