Numerical inversion simulation of coal and rock under uniaxial compression failure in PFC^2D by Zhou Tianbai, Yang Xiaobin, Han Xinxing

“…Coal is a natural inhomogeneous and discontinuous rock, which is very difficult to obtain repeatability test results through the experiment method.This paper based on discrete element software PFC^2D and obtained coal deformation damage control parameters by numerical inversion method, and simulated the deformation and failure process of coal rock under uniaxial compression by software.In terms of comparing the results of numerical simulation and laboratory test, the numerical inversion method is proven a useful method to study deformation and destruction of natural material.The numerical simulation results can provide theoretical and data basis for engineering practices.…”
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Facile synthesis of two diastereomeric indolizidines corresponding to the postulated structure of alkaloid 5,9E-259B from a Bufonid toad (Melanophryniscus) by Angela Nelson, H. Martin Garraffo, Thomas F. Spande, John W. Daly, Paul J. Stevenson

“…The comparison of the mass and FTIR spectral properties of the synthetic compounds to those of the natural material strongly suggest that the gross structure is correct and that the difference may be a branch in the C5 alkyl side-chain. …”
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Subwavelength imaging designed with meander-line anisotropic epsilon-near-zero (AENZ) metamaterial structures by Xiaofei Xu, Yefang Wang, Juzheng Wei

“…We remark that in the model, both of natural material loss and finite element size effect are considered mimicking practical scenarios. …”
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A REALITY OF MAN by Vardenis Pavardenis

“…Is man real as a spiritual being or is he with two natures: material and spiritual? A man is not material (that is his body). …”
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A REALITY OF MAN by Edmundas Krakauskas

“…Is man real as a spiritual being or is he with two natures: material and spiritual? A man is not material (that is his body). …”
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Sibling chair by Fereday, George, Fereday, Tom

“…George is an academic specialising in natural materials and Tom is an industrial designer. The chair was commissioned by the Powerhouse Museum, Sydney, as a limited edition for the newly opened Castle Hill building – a storehouse for the museum collection, supporting research and conservation. …”
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Radiological Evaluation of Rabbit Femoral Defect Healing in Caspian SEASHELL Pellets by M. Marjani,Ph.D, M. Selk Ghaffari, Ph.D, R. Moridpour, D.V.M., A. Veshkini,Ph.D., Y. AN, Ph.D.

“…AbstractBackground and Purpose: Autograft is the best bone graft substitute, however, it has some limitations, so allograft with synthetic or natural materials has been advised to use for bone graft. …”
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Does amount of cut vegetal residue on the canopy influence growth and the structural characteristics of marandu palisadegrass? by Gabriella Fernandes Silva, Weisler Borges Fernandes, Gabriel de Oliveira Rocha, Flávia de Oliveira Scarpino van Cleef, Bruno Humberto Rezende Carvalho, Manoel Eduardo Rozalino Santos

“…The treatments were four cut vegetal residues (0; 2,000; 4,000 and 8,000 t ha-1 of natural material) deposited on Urochloa brizantha cv. Marandu canopy in late winter. …”
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Piperlongumine activates Sirtuin1 and improves cognitive function in a murine model of Alzheimer’s disease by Jun Go, Thi-Kim-Quy Ha, Ji Yeon Seo, Tae-Shin Park, Young-Kyoung Ryu, Hye-Yeon Park, Jung-Ran Noh, Yong-Hoon Kim, Jung Hwan Hwang, Dong-Hee Choi, Dae Youn Hwang, Sanghee Kim, Chul-Ho Lee, Won Keun Oh, Kyoung-Shim Kim

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Characterization of Chirality in Diffractive Metasurfaces by Photothermal Deflection Technique by Roberto Li Voti, Grigore Leahu, Emilija Petronijevic, Alessandro Belardini, Tiziana Cesca, Carlo Scian, Giovanni Mattei, Concita Sibilia

“…Chiral substances interact with left and right circularly polarized light differently, but this difference is very minor in natural materials. Specially engineered, nanostructured, periodic materials can enhance the chiro-optical effects if the symmetry in their interactions with circular polarization is broken. …”
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Novel Tubular Carbon Membranes Prepared from Natural Rattans by Xuezhong He

“…The novel tubular carbon membranes produced from natural materials are, for the first time, reported. The novelty of this idea is to use natural rattans as precursors for making carbon membranes to address the challenges of cellulose polymers. …”
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Dispersion and efficiency engineering of metasurfaces by Zhang, Xiaomeng, Bai, Benfeng, Sun, Hong-Bo

“…Metasurfaces, ultrathin two-dimensional arrays of artificially engineered meta-atoms, can impart spatially varying changes towards the incident electromagnetic wave and provide versatile functionalities once unprecedented in sub-wavelength thick natural materials. The wavefront manipulation by metasurfaces usually arises from the strong resonant behaviors of varied meta-atoms in subwavelength lattice, which also brings some drawbacks like the unexpected dispersion due to separate resonances of the meta-atoms and the long concerned low efficiency problem. …”
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Bioactive Polymeric Materials for the Advancement of Regenerative Medicine by Anthony Iovene, Yuwen Zhao, Shue Wang, Kagya Amoako

“…Biopolymers are widely accepted natural materials in regenerative medicine, and further development of their bioactivities and discoveries on their composition/function relationships could greatly advance the field. …”
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Modification of Rhodamine WT tracer tests procedure in activated sludge reactors by Knap Marta, Balbierz Piotr

“…Additionally raw sewage may contain other natural materials or pollutants exhibiting limited fluorescent properties, which are responsible for background fluorescence interference. …”
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Benefiting from the natural color of wood in confirming the plastic and expressive values of the sculptural work by Dr. Arfaa shaker hassen

“…Tree wood is a natural material that is one of the oldest materials used by the artists of many ancient civilizations, as well as by the sculptors of modern and contemporary arts. …”

Natural Dietary and Herbal Products in Anti-Obesity Treatment by Nan-Nong Sun, Tsung-Yen Wu, Chi-Fai Chau

“…Appropriate lifestyle and behavior interventions are still the crucial cornerstone to weight loss success, but maintaining such a healthy lifestyle is extremely challenging. Abundant natural materials have been explored for their obesity treatment potential and widely used to promote the development of anti-obesity products. …”
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Improve the thermal and mechanical properties of foam polystyrene by gebrile soil by Montajb Al-khodary, Sabah AL-sibai, Moaffaq Tellawi

“…In this research we tried to improve the thermal insulation efficiency of polystyrene foam by adding some natural materials. The gebrile soil was selected for several reasons, including abundance and ease of processing before the addition - There are many previous researches for soil treatment -. …”
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Theoretical Study of fractal shape material of negative refractive index by Amer Shaalan, Sami chiad, Nadir Habubi, Nidhal Jandow, Ammar Shareef

“…Advanced materials are artificial structure materials that exhibit properties not found in nature. Material that has a negative refractive index (left-handed materials) is found to get a lot of interest in the literatures. …”
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High tech cognitive and acoustic enrichment for captive elephants by French, Fiona, Mancini, Clara, Sharp, Helen

“…Our fieldwork resulted in the development of an interactive prototype of an acoustic toy that elephants are able to control using interface elements constructed from a range of natural materials.…”
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Removal techniques of nitrate from water by Shahid, Shamsuddin, Pour, Morteza Mohseni, Ebrahimi, Kumars

“…Recent literatures related to various techniques including reverse osmosis, ion exchange, electrodialysis, biological denitrification, chemical denitrification, adsorption methods using different adsorbents like carbon base, agricultural waste, natural materials are systematically review to assess their performance. …”