Role of Reference Materials Used in Measurement of Oil Pollution and a Correlation Equation to Determine Oil in Seawater

Rapid maxillary expansion is defined as the release of medio-palatine suture using an orthopedic forces. The role of this procedure is to expand the upper jaw in order to achieve the broadening of the upper arch. This study was initiated to quantify the effects of disjunction and post- treatment bone changes, after an adequate contention which lasted for three weeks. This study is carried on laboratory animals (common breed rabbit) to determine tensile strength and the elasticity modulus of biological materials used in orthdodontics. The results of the study are consistent with those reported in the literature reference.

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Role of Statistics in the Certification Of Standard Reference Materials

Geostandards and Geoanalytical Research ◽

10.1111/j.1751-908x.1979.tb00249.x ◽

1979 ◽

Vol 3 (2) ◽

pp. 115-120 ◽

Cited By ~ 8

Author(s):

F. BASTENAIRE

Keyword(s):

Reference Materials ◽

Standard Reference Materials

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The development and role of international biological reference materials in the diagnosis of anaemia

Biologicals ◽

10.1016/j.biologicals.2010.02.007 ◽

2010 ◽

Vol 38 (4) ◽

pp. 449-458 ◽

Cited By ~ 7

Author(s):

Susan J. Thorpe

Keyword(s):

Reference Materials ◽

Biological Reference Materials ◽

International Biological

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Pots on mats: mat-impressed salt-extraction pottery at Chalcolithic Provadia-Solnitsata, Bulgaria

Antiquity ◽

10.15184/aqy.2021.145 ◽

2021 ◽

pp. 1-16

Author(s):

Mila Andonova ◽

Vassil Nikolov

Keyword(s):

Material Culture ◽

Large Scale ◽

Raw Materials ◽

Salt Production ◽

Production And Consumption ◽

Late Chalcolithic ◽

South Eastern Europe ◽

Materials Used ◽

The Relationship

Evidence for both basket weaving and salt production is often elusive in the prehistoric archaeological record. An assemblage of Middle–Late Chalcolithic pottery from Provadia-Solnitsata in Bulgaria provides insight into these two different technologies and the relationship between them. The authors analyse sherds from vessels used in large-scale salt production, the bases of which bear the impression of woven mats. This analysis reveals the possible raw materials used in mat weaving at Provadia-Solnitsata and allows interpretation of the role of these mats in salt production at the site. The results illustrate how it is possible to see the ‘invisible’ material culture of prehistoric south-eastern Europe and its importance for production and consumption.

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Application of immobilized mycelium-based pellets for the removal of organochlorine compounds: a review

Water Science & Technology ◽

10.2166/wst.2021.093 ◽

2021 ◽

Author(s):

J. C. V. Pereira ◽

M. P. Serbent ◽

E. Skoronski

Keyword(s):

Wastewater Treatment Plants ◽

Cost Effective ◽

Field Studies ◽

Organochlorine Compounds ◽

Environmental Persistence ◽

Factors Affecting ◽

Materials Used ◽

Immobilization Techniques ◽

Enzymatic Machinery

Abstract Organochlorines have diverse structures and applications and are included in the list of persistent organic pollutants (POPs) due to their toxicity and environmental persistence. The reduced capacity of conventional wastewater treatment plants to remove these compounds encourages the development of cost-effective and efficient remediation approaches. Fungal biotechnology can contribute to the development of these technologies through their enzymatic machinery but faces several drawbacks related to the use of dispersed mycelium. In this sense, investigations concerning the degradation of organochlorines using immobilized fungi demonstrated an increase in contaminants removal efficiency compared with degradation by free cells. Despite this interest, the mechanisms of immobilized fungi have not been comprehensively reviewed. In this paper, recent advances of laboratory and field studies in organochlorine compounds removal by fungi were reviewed, focusing on the role of immobilization techniques. Firstly, the mechanisms of organochlorines bioconversion by fungi and the factors affecting enzyme activity are elucidated and discussed in detail. Then, the main targeted compounds, fungi, technics, and materials used for immobilization are discussed, as well as their advantages and limitations. Furthermore, critical points for future studies of the fungi immobilization for organochlorines removal are proposed.

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Development of reference materials for thermodynamic properties: metrological support of measurements in the field of thermal analysisand calorimetry in Russia

Reference materials ◽

10.20915/2077-1177-2019-15-3-15-22 ◽

2019 ◽

Vol 15 (3) ◽

pp. 15-22

Author(s):

A. M. Nepomiluev ◽

V. V. Kazantsev ◽

A. P. Shipitsyn

Keyword(s):

Thermal Analysis ◽

Thermodynamic Properties ◽

Reference Materials ◽

Metrological Support ◽

Current State ◽

Materials Used

This paper is aimed at analysing the current state and prospects of metrological support and standardisation in the field of thermal analysis in Russia. Main characteristics of reference materials used for testing, graduating, calibrating, and verifying thermal analysis instruments are described.

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Bladder Substitution: The Role of Tissue Engineering and Biomaterials

Processes ◽

10.3390/pr9091643 ◽

2021 ◽

Vol 9 (9) ◽

pp. 1643

Author(s):

Martina Casarin ◽

Alessandro Morlacco ◽

Fabrizio Dal Moro

Keyword(s):

Tissue Engineering ◽

Urinary Diversion ◽

Mucus Production ◽

Reconstructive Procedures ◽

Suitable Material ◽

Orthotopic Urinary Diversion ◽

Bladder Substitution ◽

Materials Used ◽

Bowel Segments

Tissue engineering could play a major role in the setting of urinary diversion. Several conditions cause the functional or anatomic loss of urinary bladder, requiring reconstructive procedures on the urinary tract. Three main approaches are possible: (i) incontinent cutaneous diversion, such as ureterocutaneostomy, colonic or ileal conduit, (ii) continent pouch created using different segments of the gastrointestinal system and a cutaneous stoma, and (iii) orthotopic urinary diversion with an intestinal segment with spherical configuration and anastomosis to the urethra (neobladder, orthotopic bladder substitution). However, urinary diversions are associated with numerous complications, such as mucus production, electrolyte imbalances and increased malignant transformation potential. In this context, tissue engineering would have the fundamental role of creating a suitable material for urinary diversion, avoiding the use of bowel segments, and reducing complications. Materials used for the purpose of urinary substitution are biological in case of acellular tissue matrices and naturally derived materials, or artificial in case of synthetic polymers. However, only limited success has been achieved so far. The aim of this review is to present the ideal properties of a urinary tissue engineered scaffold and to examine the results achieved so far. The most promising studies have been highlighted in order to guide the choice of scaffolds and cells type for further evolutions.

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