infrared spectroscopy Articles
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Identification of a suitable sterilisation method for collagen derived from a marine Demosponge
Collagen is widely used as a biomedical material, and its importance is likely to grow as research and understanding progresses in this field. As a biomedical material, ensuring the sterility of collagen before use as, or incorporation into, a medical device is paramount. However, common sterilisation techniques can induce changes in the physical structure and protein chemistry of collagen, ...
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Infrared spectroscopy of human bone marrow: evidence of structural changes during acute leukemia
Fourier transform infrared (FTIR) spectroscopy was explored as a means to distinguish newly diagnosed of acute lymphoblastic leukemia from disease free bone marrow samples. Characteristic bands alterations were identified in both healthy and diseased samples arising from cellular protein, lipid and DNA. There were specific changes that affected the secondary structure of proteins that appeared in ...
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Characterisation and controlled drug release from a novel two-phase hydrogel system
In this work, a two-phase hydrogel system was prepared by physically imbedding a xerogel in the core of a cryogel which was freeze thawed. The cryogels were prepared with poly (vinyl alcohol) (PVA) and poly (acrylic acid) (PAA) while the xerogels were prepared by UV polymerisation of 1-vinyl-2-pyrrolidinone (NVP), acrylic acid (AA) and various percentages of ibuprofen sodium salt. Mechanical and ...
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QC and product screening of hair, skin, and dentalcare products with NIRS
Quality control of hair, skin, and dentalcare products continues to increase in importance for producers. Aside from safeguarding our health, it is equally important to avoid the sale of out-of-specification products. Product recalls are very expensive and have a lasting effect on a company’s reputation. Therefore, intensive testing of these different care products is essential before ...
By Metrohm AG
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Development of fabrication technique in nano–scale resveratrol by collagen
Resveratrol (3,5,4′–trihydroxy–trans–stilbene, RSV), is found in various plants, including grapes, berries and peanuts. It is also present in wines, especially red wines. RSV has potent antioxidant, anti–inflammatory, and chemo–protective properties used as a biologically active supplement in the prophylaxis of myocardial infarction, diabetes, and tumours. The aim of this study was using ...
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Synthesis of biphasic calcium phosphate powders by a simple hydrolysis process
An ideal bone grafting material should be compatible with physiological environment, provoke osseous tissue formation and adapt degradation behaviour to new bone tissue growth. Calcium phosphates, a main inorganic constituent of the human hard tissue, are by far the best substitute materials for bone reconstruction because of their excellent bioactivity, biocompatibility and osteoconductivity. In ...
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Carboxyl and phenolic humic fractions affect pinus nigra callus growth and metabolism
A humic substance was separated into carboxyl and phenolic fractions by affinity chromatography using a weak-base amine resin. The humic extract and its fractions were analyzed for physical and chemical characteristics. Their biological effects were compared, at concentrations of 1 and 5 mg C L–1, on the growth of callus of Pinus nigra J.F. Arnold. A higher molecular weight and a greater degree ...
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What Revisions Has U.S. Pharmacopoeia Made to Pharmaceutical Excipients?
Pharmaceutical excipients are natural or synthetic substances formulated together with the active ingredients of the drug, whose purpose is to increase the formulations containing effective active ingredients or endow the active ingredients in the final dosage form with therapeutic effects, such as promoting drug absorption or solubility. Pharmaceutical excipients can also be used in the ...
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Estimation of stones in gallbladder with FT-IR | JBES Journals
By: Ali Ibrahim Shar, Gul Afshan Soomro, Ghulam Abbas Shar, Muhammad Bachal Korai Abstract Forty (40) specimens of the gallstones were taken from the infected peoples who were admitted and cured in the Peoples University of Medical & Health Sciences for Women, Shaheed Benazirabad, Nawabshah, Sindh, Pakistan. In our work gallstones (total 40) were found in the age ranges from 20-60 years for ...
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Investigating Polysaccharides: Methods and Protocols
Polysaccharides are made by polymerizing more than 10 monosaccharide molecules through glycosidic bonds. The molecular weight of polysaccharides is relatively large, usually consisting of hundreds or even tens of thousands of monosaccharide molecules. Polysaccharides, together with nucleic acids, proteins, and lipids, are called the four basic substances of life and play important roles in many ...
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Force Myography to Control Robotic Upper Extremity Prostheses: A Feasibility Study
Advancement in assistive technology has led to the commercial availability of multi-dexterous robotic prostheses for the upper extremity. The relatively low performance of the currently used techniques to detect the intention of the user to control such advanced robotic prostheses, however, limits their use. This article explores the use of force myography (FMG) as a potential alternative to ...
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Raman imaging at biological interfaces: applications in breast cancer diagnosis
Abstract Background: One of the most important areas of Raman medical diagnostics is identification and characterization of cancerous and noncancerous tissues. The methods based on Raman scattering has shown significant potential for probing human breast tissue to provide valuable information for early diagnosis of breast cancer. A vibrational fingerprint from the biological tissue provides ...
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The Effect of The Covid-19 Pandemic on the Environment following One Year in Lockdown
Introduction The global outbreak of Covid-19 has affected every part of human lives, including impacting the physical world in which we live. This is primarily due to the measures that have been taken around the world to control the spread of the virus and the consequent slowdown of economic activities, which have had significant effects on the environment. The European Environment Agency (EEA) ...
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The Effect of the Covid-19 Pandemic on the Environment following One Year in Lockdown
Introduction The global outbreak of Covid-19 has affected every part of human lives, including impacting the physical world in which we live. This is primarily due to the measures that have been taken around the world to control the spread of the virus and the consequent slowdown of economic activities, which have had significant effects on the environment. The European Environment Agency (EEA) ...
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