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RISS 인기검색어
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- 저자 : Paul Rudy (검색결과 4 건)
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Insect fatty acids: A comparison of lipids from three Orthopterans and Tenebrio molitor L. larvae
Aman Paul,Michel Frederich,Rudy Caparros Megido,Taofic Alabi,PriyankaMalik,Roel Uyttenbroeck,Frederic Francis,Christophe Blecker,Eric Haubruge,Georges Lognay,Sabine Danthine 한국응용곤충학회 2017 Journal of Asia-Pacific Entomology Vol.20 No.2
In order to explore some potential insect sources of food lipids, the lipid compositions of three Orthopterans (Acheta domesticus, Conocephalus discolor and Chorthippus parallelus) were analyzed and compared with those of Tenebrio molitor larvae. A. domesticus, Co. discolor, Ch. parallelus and T. molitor larvae were found to contain approximately 15%, 13%, 10% and 32% lipids on dryweight, respectively. The lipids fromthree Orthopterans contain much higheramounts of essential fatty acids than those of T.molitor larvae. The twoOrthopterans of the suborder Ensifera i.e., A. domesticus and Co. discolor contain linoleic acid inmajor quantities,while Ch. parallelus of the suborder Caelifera, contain α-linolenic acid in major quantities. The consumption of linoleic and α-linolenic fatty acid is linked with numerous health promoting effects. The factors that contribute to differences in fatty acid profiles of these insects are being discussed. At last the nutritional parameters including polyunsaturated to saturated and omega 6 to omega 3 fatty acid ratios of these insect lipids are also being discussed to understand the potential role of these lipids in human nutrition.
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Aman Paul,Michel Frederich,Roel Uyttenbroeck,PriyankaMalik,Sandrino Filocco,Aurore Richel,Stephanie Heuskin,Taofic Alabi,Rudy Caparros Megido,Thierry Franck,Jerome Bindelle,Philippe Maesen,Frederic Fr 한국응용곤충학회 2016 Journal of Asia-Pacific Entomology Vol.19 No.4
Insects, particularly those belonging to the family Acrididae (grasshoppers), are commonly consumed as human food in many parts of the world. Grasshoppers of the species Chorthippus parallelus are abundantly found throughout Europe. However, these insects were not consumed by Europeans till now, but could possibly be used as human food, which is why we investigated their chemical composition. We found that they contain high level of proteins (69%), with an excellent amino acid profile and protein digestibility (97%). Furthermore, specimens of C. parallelus have an interesting fatty acids profile and minerals composition. Preliminary toxicity assessment indicates that these insects do not exhibit toxicity towards neutrophil cells (white blood cells). These data suggest that C. parallelus could be considered for human consumption. Rearing trials done during the study show that commercial rearing could be developed to produce sufficient biomass for sustaining human consumption.
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Lin Maohua,Paul Rudy,Shapiro Stephen Z.,Doulgeris James,O’Connor Timothy E.,Tsai Chi-Tay,Vrionis Frank D. 대한척추외과학회 2022 Asian Spine Journal Vol.16 No.5
Study Design: This study compares four cervical endplate removal procedures, validated by finite element models.Purpose: To characterize the effect of biomechanical strength and increased contact area on the maximum von Mises stress, migration, and subsidence between the cancellous bone, endplate, and implanted cage.Overview of Literature: Anterior cervical discectomy and fusion (ACDF) has been widely used for treating patients with degenerative spondylosis. However, no direct correlations have been drawn that incorporate the impact of the contact area between the cage and the vertebra/endplate.Methods: Model 1 (M1) was an intact C2C6 model with a 0.5 mm endplate. In model 2 (M2), a cage was implanted after removal of the C4–C5 and C5–C6 discs with preservation of the osseous endplate. In model 3 (M3), 1 mm of the osseous endplate was removed at the upper endplate. Model 4 (M4) resembles M3, except that 3 mm of the osseous endplate was removed.Results: The range of motion (ROM) at C2C6 in the M2–M4 models was reduced by at least 9º compared to the M1 model. The von Mises stress results in the C2C3 and C3C4 interbody discs were significantly smaller in the M1 model and slightly increased in the M2–M3 and M3–M4 models. Migration and subsidence decreased from the M2–M3 model, whereas further endplate removal increased the migration and subsidence as shown in the transition from M3 to M4.Conclusions: The M3 model had the least subsidence and migration. The ROM was higher in the M3 model than the M2 and M4 models. Endplate preparation created small stress differences in the healthy intervertebral discs above the ACDF site. A 1 mm embedding depth created the best balance of mechanical strength and contact area, resulting in the most favorable stability of the construct.
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A Review of Finite Element Modeling for Anterior Cervical Discectomy and Fusion
Lin Maohua,Paul Rudy,Dhar Utpal Kanti,Doulgeris James,O’Connor Timothy E.,Tsai Chi-Tay,Vrionis Frank D. 대한척추외과학회 2023 Asian Spine Journal Vol.17 No.5
The cervical spine poses many complex challenges that require complex solutions. Anterior cervical discectomy and fusion (ACDF) has been one such technique often employed to address such issues. In order to address the problems with ACDF and assess the modifications that have been made to the technique over time, finite element analyses (FEA) have proven to be an effective tool. The variations of cervical spine FEA models that have been produced over the past couple of decades, particularly more recent representations of more complex geometries, have not yet been identified and characterized in any literature. Our objective was to present material property models and cervical spine models for various simulation purposes. The outlining and refinement of the FEA process will yield more reliable outcomes and provide a stable basis for the modeling protocols of the cervical spine.
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