Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 11 of 11 for “"Natural substances"”.
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Novel Cladding Designs for Engineering Electromagnetic Scattering
… ability to exhibit properties not found in natural substances, have paved the way for a wide range of applications, particularly in the areas of next-generation antenna designs and electromagnetic cloaking. In this thesis, we propose antenna systems that address the inherent challenges …
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NATURAL PRODUCT AND BUILDING BLOCK SYNTHESIS: CAROLACTON-INSPIRED ANALOGS, THE ANTITUMOR THERAPEUTIC FRAX-1036, AND THE CONSTRUCTION OF ATOMICALLY PRECISE MEMBRANES FROM SPIROLIGOMERS
… thousands of years ago, humans have looked to natural substances as remedies for maladies. Today, many isolation and natural product chemists have begun revisiting ancient folk medicines in an attempt to isolate the compound(s) responsible for effective treatment. In addition to the examination …
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A Phytochemical Analysis of Secondary Metabolites in Eupatorium Serotinum
<p>Phytochemistry, a subset of Natural Products Chemistry, studies chemically derived products from natural substances. Advances in this field have important applications in medicinal research due to the distinctive and unique properties of natural compounds. All metabolites are produced from the …
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La piel de la arquitectura de tierra. Sustancias naturales al servicio de la restauración de superficies del patrimonio vernáculo edificado
The use of natural substances or biopolymers in the improvement of earthen renders has been very common among the building cultures. Further properties like strength, impermeability, hardness and repellency against insects are given to the plasters. Despite the emergence of more complex and …
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Microwave-Mediated Hetero Diels-Alder reaction: Synthesis of biologically active compounds
… scaffold is present in a very large number of natural substances and, more interesting, is a required scaffold for an huge variety of biologically active compounds. Activated olefins bearing one or two sulfone groups, were choose as dienophiles both for the intrinsic characteristic flexibility …