Environmentally friendly synthesis and photopolymerization of acrylated methyl ricinoleate for biomedical applications

2019 ◽  
Vol 136 (38) ◽  
pp. 47969
Author(s):  
Pinar Cakir Hatir ◽  
Gokhan Cayli
Keyword(s):  
Biomedical Applications ◽  
Methyl Ricinoleate ◽  
Environmentally Friendly

Biocompatible chitosan-based composites with properties suitable for hyperthermia therapy

2020 ◽  
Vol 8 (6) ◽  
pp. 1256-1265 ◽  
Author(s):  
Ana Barra ◽  
Zélia Alves ◽  
Nuno M. Ferreira ◽  
Manuel A. Martins ◽  
Helena Oliveira ◽  
...  
Keyword(s):  
Biomedical Applications ◽  
Environmentally Friendly ◽  
Hyperthermia Therapy

Sustainably made, flexible and biocompatible composites, having environmentally friendly compositions and multifunctional capabilities, are promising materials for several emerging biomedical applications.

Nanocellulose as a sustainable biomass material: structure, properties, present status and future prospects in biomedical applications

Nanoscale ◽  
2017 ◽  
Vol 9 (39) ◽  
pp. 14758-14781 ◽  
Author(s):  
Yan Xue ◽  
Zihao Mou ◽  
Huining Xiao
Keyword(s):  
Present Status ◽  
Biomedical Applications ◽  
Mechanical Performance ◽  
Environmentally Friendly ◽  
Material Structure ◽  
Future Prospects ◽  
Structure Properties

Nanocellulose, extracted from the most abundant biomass material cellulose, has proved to be an environmentally friendly material with excellent mechanical performance, great biocompatibility and biodegradability, and has been used in a variety of biomedical applications.

Graphene-based advanced nanoplatforms and biocomposites from environmentally friendly and biomimetic approaches

2019 ◽  
Vol 21 (18) ◽  
pp. 4887-4918 ◽  
Author(s):  
Lang Ma ◽  
Mi Zhou ◽  
Chao He ◽  
Shuang Li ◽  
Xin Fan ◽  
...  
Keyword(s):  
Biomedical Applications ◽  
Environmentally Friendly

Environmentally friendly and biomimetic approaches to fabricate graphene-based advanced nanoplatforms and biocomposites for biomedical applications are summarized in this review.

A new medium for boriding of Ti6Al4V alloy for biomedical applications

2016 ◽  
Vol 233 (2) ◽  
pp. 109-119 ◽  
Author(s):  
Yavuz Kaplan ◽  
Ahmet Cetin Can ◽  
Arzum Ulukoy
Keyword(s):  
Solid State ◽  
Biomedical Applications ◽  
Titanium Surface ◽  
Low Cost ◽  
Oxygen Affinity ◽  
Environmentally Friendly ◽  
Heat Treatments ◽  
Ti6al4v Alloy ◽  
Atmospheric Conditions ◽  
Alloy Titanium

This study presents a low-cost and environmentally friendly medium for the pack boriding (boronizing) of a Ti6Al4V alloy. Titanium and its alloys are known to be highly reactive and to have extreme oxygen affinity. Therefore, boriding is performed under vacuum or in protective atmospheric conditions. This work evaluated the pack boriding heat treatments of a Ti6Al4V alloy under atmospheric conditions via the various boriding media used by previous researchers. In addition, a new pack boriding medium was developed by adding aluminum. Consequently, this study demonstrated that it is possible to obtain an undamaged titanium surface by applying solid-state boriding under atmospheric conditions.

scholarly journals Strategies to Obtain Designer Polymers Based on Cyanobacterial Extracellular Polymeric Substances (EPS)

2019 ◽  
Vol 20 (22) ◽  
pp. 5693 ◽  
Author(s):  
Sara B. Pereira ◽  
Aureliana Sousa ◽  
Marina Santos ◽  
Marco Araújo ◽  
Filipa Serôdio ◽  
...  
Keyword(s):  
Drug Delivery ◽  
Genetic Engineering ◽  
Chemical Modification ◽  
Biomedical Applications ◽  
Extracellular Polymeric Substances ◽  
Biological Activities ◽  
Environmentally Friendly ◽  
Biosynthetic Pathways ◽  
Central Metabolism ◽  
Challenges And Opportunities

Biopolymers derived from polysaccharides are a sustainable and environmentally friendly alternative to the synthetic counterparts available in the market. Due to their distinctive properties, the cyanobacterial extracellular polymeric substances (EPS), mainly composed of heteropolysaccharides, emerge as a valid alternative to address several biotechnological and biomedical challenges. Nevertheless, biotechnological/biomedical applications based on cyanobacterial EPS have only recently started to emerge. For the successful exploitation of cyanobacterial EPS, it is important to strategically design the polymers, either by genetic engineering of the producing strains or by chemical modification of the polymers. This requires a better understanding of the EPS biosynthetic pathways and their relationship with central metabolism, as well as to exploit the available polymer functionalization chemistries. Considering all this, we provide an overview of the characteristics and biological activities of cyanobacterial EPS, discuss the challenges and opportunities to improve the amount and/or characteristics of the polymers, and report the most relevant advances on the use of cyanobacterial EPS as scaffolds, coatings, and vehicles for drug delivery.

Applications of Scanning Microscopy in Biomedical Research

1968 ◽  
Vol 26 ◽  
pp. 354-355
Author(s):  
T. L. Hayes
Keyword(s):  
Information Content ◽  
Biomedical Research ◽  
Biomedical Applications ◽  
Three Dimensional ◽  
Dental Enamel ◽  
Resolving Power ◽  
Whole Mount ◽  
Two Parameters ◽  
Content Information ◽  
Sectioned Tissue

Biomedical applications of the scanning electron microscope (SEM) have increased in number quite rapidly over the last several years. Studies have been made of cells, whole mount tissue, sectioned tissue, particles, human chromosomes, microorganisms, dental enamel and skeletal material. Many of the advantages of using this instrument for such investigations come from its ability to produce images that are high in information content. Information about the chemical make-up of the specimen, its electrical properties and its three dimensional architecture all may be represented in such images. Since the biological system is distinctive in its chemistry and often spatially scaled to the resolving power of the SEM, these images are particularly useful in biomedical research.In any form of microscopy there are two parameters that together determine the usefulness of the image. One parameter is the size of the volume being studied or resolving power of the instrument and the other is the amount of information about this volume that is displayed in the image. Both parameters are important in describing the performance of a microscope. The light microscope image, for example, is rich in information content (chemical, spatial, living specimen, etc.) but is very limited in resolving power.

How SIMS microscopy can be used in medicine

1992 ◽  
Vol 50 (2) ◽  
pp. 1602-1603
Author(s):  
Philippe Fragu
Keyword(s):  
Mass Spectrometry ◽  
Biomedical Applications ◽  
Secondary Ion Mass Spectrometry ◽  
Chemical Elements ◽  
Biological Applications ◽  
The Past ◽  
Potential Source ◽  
Secondary Ion ◽  
Chemical Integrity ◽  
Scientific Endeavour

The identification, localization and quantification of intracellular chemical elements is an area of scientific endeavour which has not ceased to develop over the past 30 years. Secondary Ion Mass Spectrometry (SIMS) microscopy is widely used for elemental localization problems in geochemistry, metallurgy and electronics. Although the first commercial instruments were available in 1968, biological applications have been gradual as investigators have systematically examined the potential source of artefacts inherent in the method and sought to develop strategies for the analysis of soft biological material with a lateral resolution equivalent to that of the light microscope. In 1992, the prospects offered by this technique are even more encouraging as prototypes of new ion probes appear capable of achieving the ultimate goal, namely the quantitative analysis of micron and submicron regions. The purpose of this review is to underline the requirements for biomedical applications of SIMS microscopy.Sample preparation methodology should preserve both the structural and the chemical integrity of the tissue.

Biomedical applications: Pitfalls in the practice

1994 ◽  
Vol 52 ◽  
pp. 378-379
Author(s):  
J. D. Shelburne ◽  
Peter Ingram ◽  
Victor L. Roggli ◽  
Ann LeFurgey
Keyword(s):  
Operating Room ◽  
Liquid Nitrogen ◽  
Lung Tissue ◽  
Biomedical Applications ◽  
Microprobe Analysis ◽  
Tissue Sample ◽  
Cellular Level ◽  
Tissue Samples ◽  
Asbestos Fibers

At present most medical microprobe analysis is conducted on insoluble particulates such as asbestos fibers in lung tissue. Cryotechniques are not necessary for this type of specimen. Insoluble particulates can be processed conventionally. Nevertheless, it is important to emphasize that conventional processing is unacceptable for specimens in which electrolyte distributions in tissues are sought. It is necessary to flash-freeze in order to preserve the integrity of electrolyte distributions at the subcellular and cellular level. Ideally, biopsies should be flash-frozen in the operating room rather than being frozen several minutes later in a histology laboratory. Electrolytes will move during such a long delay. While flammable cryogens such as propane obviously cannot be used in an operating room, liquid nitrogen-cooled slam-freezing devices or guns may be permitted, and are the best way to achieve an artifact-free, accurate tissue sample which truly reflects the in vivo state. Unfortunately, the importance of cryofixation is often not understood. Investigators bring tissue samples fixed in glutaraldehyde to a microprobe laboratory with a request for microprobe analysis for electrolytes.

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