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Henry Herman Hausner

Bio: Henry Herman Hausner is an academic researcher. The author has contributed to research in topics: Nuclear reactor & Powder metallurgy. The author has an hindex of 2, co-authored 3 publications receiving 6 citations.

Papers
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Book
01 Jan 1966

3 citations

Book
01 Jan 1966

3 citations


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Journal ArticleDOI
TL;DR: The evidence suggests both peony species, when administered in entire botanical form, have an excellent safety profile; however, constituent toxicity risk evidence is limited, requiring further investigation.
Abstract: The roots of two peony species, Paeonia lactiflora Pallas and Paeonia veitchii Lynch are routinely referred to as either chishao () or baishao (). This paper reviews the botanical origins and traditional medicinal usage of each species, as well as pharmacological like activity of their constituents. A search of herbal pharmacological encyclopaedia, PubChem and PubMed databases identified their known constituents. The biological data for these constituents were evaluated and classified according to pharmacological-like activity, with emphasis on compounds of greatest concentration and bioavailability. It was found that P. lactiflora and P. veitchii have some common compounds; however, their phytochemical bioavailability varies. Furthermore, a larger number of compounds have been identified in P. lactiflora. These have greater potential for antiinflammatory, antiviral, antibacterial and antioxidant therapeutic activity compared with P. veitchii. However, evidence indicates both species are similarly indicated for antiviral and glycaemic activity. Major compounds of each are classified as flavonoids, hydrolysable tannins (polyphenols) and monoterpene glycosides. The evidence suggests both species, when administered in entire botanical form, have an excellent safety profile; however, constituent toxicity risk evidence is limited, requiring further investigation. Although experiments show many compounds have biological activity, further investigation of their therapeutic potential is needed. Copyright © 2016 John Wiley & Sons, Ltd.

84 citations

Journal ArticleDOI
TL;DR: The bis(trifluoromethane)sulfonimide salt is revealed to exhibit the best photoinitiating ability in both the free radical polymerization of acrylates and the cationic polymerized epoxides, and molecular orbital calculations have been carried out.
Abstract: Iodonium salts are well established photoacid generators, cationic photoinitiators, as well as additives commonly used in photoredox catalytic cycles. However, as a strong limitation, iodonium salts are characterized by low light absorption properties for λ > 300 nm so that these latter cannot be activated with cheap, safe, and eco-friendly near UV or even visible light emitting diodes (LEDs). To overcome this drawback, the covalent linkage of an iodonium salt to a chromophore absorbing at longer wavelength is actively researched. With aim at red-shifting the absorption spectrum of the iodonium salt, the synthesis of new compounds combining within a unique chemical structure both the chromophore (here the naphthalimide scaffold) and the iodonium salt is presented. By mean of this strategy, a polymerization could be initiated at 365 nm with the modified iodonium salts whereas no polymerization could be induced with the benchmark iodonium salt i.e., Speedcure 938 at this specific wavelength. To examine the effect of the counter-anion on the photoinitiating ability of these different salts, five different counter-anions were used. Comparison between the different anions revealed the bis(trifluoromethane)sulfonimide salt to exhibit the best photoinitiating ability in both the free radical polymerization of acrylates and the cationic polymerization of epoxides. To support the experimental results, molecular orbital calculations have been carried out. By theoretical calculations, the initiating species resulting from the photocleavage of the iodonium salts could be determined. The cleavage selectivity and the photochemical reactivity of the new iodoniums are also discussed.

43 citations

Journal ArticleDOI
TL;DR: In this paper , a review of the existing modeling techniques from different scales and summarise the prospects and application of different modeling methods for asphalt is presented, which can be employed to analyze the properties and optimize the performance of asphalt-based materials.
Abstract: Modeling is an important approach for describing the physical and mechanical properties of asphalt, which can be employed to analyze the properties and optimize the performance of asphalt-based materials. The objective of this review is to elucidate the existing modeling techniques from different scales and summarize the prospects and application of different modeling methods. The continuum model and its practical application at the macroscale are introduced first. However, the macroscopic model cannot explain the roles of the different components in asphalt during the degradation process. The microstructural model at the mesoscale is adopted in order to describe the physical properties of the asphalt mixture, and different numerical methods are presented in order to analyze the microstructural models. Due to the heterogeneous nature of asphalt at the nanoscale, various experimental tools have been used to determine the molecular structures of asphalt. The average model and multi-component model have been proposed in the molecular dynamics simulations. This paper provides a clear understanding of the strength and limitations of each modeling technology at different scales and the applications of multiscale modeling for asphalt materials. The possible challenges of asphalt modeling have been addressed in order to encourage the development of asphalt pavement with higher durability.

4 citations

Journal ArticleDOI
TL;DR: In this paper, the authors present some current legal aspects of fighting international terrorism and discuss the alternative scenarios for the future of the former Soviet bloc, which are limited to a few conclusions which can be drawn from the logical progression of recent events.
Abstract: A historian is a prophet of the past, not of the future, and a question about the future is not a historian's favorite one. With all these reservations, a historian is often compelled to trace past and present patterns in order to foresee the most likely arrangements of future events. The reflections presented below (in Part I) do not stem from the intention of the author to speculate about the prospects of Communism or discuss the alternative scenarios for the future of the Soviet bloc. They are limited to a few conclusions which can be drawn from the logical progression of recent events. The reflections in Part II address some current legal aspects of fighting international terrorism.

2 citations