Pyrolytic Transformation of Indigenous Biomass Wastes into Biochar: An Insight into Char Structure and Physicochemical Characteristics

2020 ◽  
Author(s):  
Nivya Mariam Paul ◽  
Variampally Sankar Harikumar
Keyword(s):  
Physicochemical Characteristics ◽  
Char Structure ◽  
Insight Into

A New Insight into the Mechanistic Study on Synthesis of Silica Nanospheres

2007 ◽  
Vol 124-126 ◽  
pp. 1249-1252
Author(s):  
Dong Shin Yun ◽  
Hyun Jung Kim ◽  
Hyun Chang Shin ◽  
Venkatathri Narayanan ◽  
Jung Whan Yoo ◽  
...  
Keyword(s):  
Physicochemical Characteristics ◽  
Mechanistic Study ◽  
Partial Hydrolysis ◽  
Particle Sizes ◽  
Species Concentration ◽  
Surface Areas ◽  
Ft Ir ◽  
Alkoxy Groups ◽  
Hydrolysis Of ◽  
Insight Into

The physicochemical characteristics (SEM, N2 adsorption, FT-IR, MASNMR) of samples from kinetics (10 min, 20 min, 30 min, 1 h and 3h) of hydrolysis of tetraethyl orthosilicate (TEOS) gives new insight into the synthesis of nanosphere. The particle sizes are increased with time, however, the surface areas decreased. FT-IR investigation reveals the presence of high intensed silanol groups of 960 cm-1 at 10 min, which reduced on progress of the reaction time. This suggests the partial hydrolysis and condensation of alkoxy groups in TEOS. 29Si MASNMR analysis shows the presence three different silica species(Q4, Q3 and Q2) in 10 and 20 min samples. The intensity of Q2 species decreases with time and other species concentration were increased.

scholarly journals The β-casein-resveratrol complex: Physicochemical characteristics and implications for enhanced nutrition

2016 ◽  
Vol 81 (7) ◽  
pp. 739-750 ◽  
Author(s):  
Hao Cheng ◽  
Li Yanfang ◽  
Xundi Yin ◽  
Muriel Subirade ◽  
Li Liang
Keyword(s):  
Physicochemical Characteristics ◽  
Bioactive Molecules ◽  
Visible Absorption ◽  
Absorption And Fluorescence Spectroscopy ◽  
Natural Polyphenol ◽  
Carrier Materials ◽  
Total Antioxidant ◽  
Carrier Systems ◽  
Molecule Interaction ◽  
Insight Into

Food proteins have been widely used as carrier materials for the encapsulation and protection of bioactive molecules. Clarification the mechanism of protein-bioactive molecule interaction is important for the development protein-based carrier systems. Interaction of b-casein with resveratrol, a natural polyphenol, was studied using ultraviolet-visible absorption and fluorescence spectroscopy. It was found that the interaction shifted the protein fluorophores to a more hydrophilic environment but the polyphenol to a more hydrophobic environment. Formation of the complex with b-casein did not affect trans-cis isomerization of resveratrol or the total antioxidant activity of the protein-polyphenol system, as analyzed respectively using spectrophotometry and 2,2-azinobis-3-ethyl-benzothiazoline-6-sulfonic acid assay. The protective effect of resveratrol against the photodecomposition of folic acid was not affected by binding to b-casein. The data obtained should provide insight into protein-polyphenol interaction mechanisms and aid the development of b-casein-based carrier systems for the delivery of bioactive molecules.

Formation and Physicochemical Characteristics of Nano Biochar: Insight into Chemical and Colloidal Stability

2018 ◽  
Vol 52 (18) ◽  
pp. 10369-10379 ◽  
Author(s):  
Guocheng Liu ◽  
Hao Zheng ◽  
Zhixiang Jiang ◽  
Jian Zhao ◽  
Zhenyu Wang ◽  
...  
Keyword(s):  
Colloidal Stability ◽  
Physicochemical Characteristics ◽  
Insight Into

scholarly journals Manually curated transcriptomics data collection for toxicogenomic assessment of engineered nanomaterials

2021 ◽  
Vol 8 (1) ◽  
Author(s):  
Laura Aliisa Saarimäki ◽  
Antonio Federico ◽  
Iseult Lynch ◽  
Anastasios G. Papadiamantis ◽  
Andreas Tsoumanis ◽  
...  
Keyword(s):  
Data Collection ◽  
Predictive Models ◽  
Physicochemical Characteristics ◽  
Engineered Nanomaterials ◽  
Omics Data ◽  
Transcriptomics Data ◽  
Toxicity Mechanisms ◽  
Insight Into

AbstractToxicogenomics (TGx) approaches are increasingly applied to gain insight into the possible toxicity mechanisms of engineered nanomaterials (ENMs). Omics data can be valuable to elucidate the mechanism of action of chemicals and to develop predictive models in toxicology. While vast amounts of transcriptomics data from ENM exposures have already been accumulated, a unified, easily accessible and reusable collection of transcriptomics data for ENMs is currently lacking. In an attempt to improve the FAIRness of already existing transcriptomics data for ENMs, we curated a collection of homogenized transcriptomics data from human, mouse and rat ENM exposures in vitro and in vivo including the physicochemical characteristics of the ENMs used in each study.

Calibration problems in hydrogen luminosities

1966 ◽  
Vol 24 ◽  
pp. 322-330
Author(s):  
A. Beer
Keyword(s):  
Galactic Structure ◽  
B Stars ◽  
Insight Into

The investigations which I should like to summarize in this paper concern recent photo-electric luminosity determinations of O and B stars. Their final aim has been the derivation of new stellar distances, and some insight into certain patterns of galactic structure.

Stochasting modeling of planetary ring systems

1984 ◽  
Vol 75 ◽  
pp. 461-469 ◽  
Author(s):  
Robert W. Hart
Keyword(s):  
Maximum Entropy ◽  
Ring System ◽  
The Sun ◽  
Ultimate State ◽  
Interparticle Interactions ◽  
Ring Systems ◽  
First Order ◽  
Planetary Ring ◽  
Insight Into

ABSTRACTThis paper models maximum entropy configurations of idealized gravitational ring systems. Such configurations are of interest because systems generally evolve toward an ultimate state of maximum randomness. For simplicity, attention is confined to ultimate states for which interparticle interactions are no longer of first order importance. The planets, in their orbits about the sun, are one example of such a ring system. The extent to which the present approximation yields insight into ring systems such as Saturn's is explored briefly.

Skeletal elements of crinoid echinoderms: High-resolution structural and microanalytical results

1983 ◽  
Vol 41 ◽  
pp. 194-195
Author(s):  
D. F. Blake ◽  
L. F. Allard ◽  
D. R. Peacor
Keyword(s):  
High Resolution ◽  
Marine Invertebrates ◽  
Sea Urchins ◽  
Structural Features ◽  
Sea Stars ◽  
High Resolution Tem ◽  
Relationship Of ◽  
The Relationship ◽  
Insight Into

Echinodermata is a phylum of marine invertebrates which has been extant since Cambrian time (c.a. 500 m.y. before the present). Modern examples of echinoderms include sea urchins, sea stars, and sea lilies (crinoids). The endoskeletons of echinoderms are composed of plates or ossicles (Fig. 1) which are with few exceptions, porous, single crystals of high-magnesian calcite. Despite their single crystal nature, fracture surfaces do not exhibit the near-perfect {10.4} cleavage characteristic of inorganic calcite. This paradoxical mix of biogenic and inorganic features has prompted much recent work on echinoderm skeletal crystallography. Furthermore, fossil echinoderm hard parts comprise a volumetrically significant portion of some marine limestones sequences. The ultrastructural and microchemical characterization of modern skeletal material should lend insight into: 1). The nature of the biogenic processes involved, for example, the relationship of Mg heterogeneity to morphological and structural features in modern echinoderm material, and 2). The nature of the diagenetic changes undergone by their ancient, fossilized counterparts. In this study, high resolution TEM (HRTEM), high voltage TEM (HVTEM), and STEM microanalysis are used to characterize tha ultrastructural and microchemical composition of skeletal elements of the modern crinoid Neocrinus blakei.

Structure and function of neural networks in the retina

1988 ◽  
Vol 46 ◽  
pp. 26-27
Author(s):  
Peter Sterling
Keyword(s):  
Ganglion Cells ◽  
Three Dimensional ◽  
Structure And Function ◽  
Synaptic Connections ◽  
Visual Axis ◽  
One Dimensional ◽  
Cat Retina ◽  
Ultrathin Sections ◽  
And Function ◽  
Insight Into

The synaptic connections in cat retina that link photoreceptors to ganglion cells have been analyzed quantitatively. Our approach has been to prepare serial, ultrathin sections and photograph en montage at low magnification (˜2000X) in the electron microscope. Six series, 100-300 sections long, have been prepared over the last decade. They derive from different cats but always from the same region of retina, about one degree from the center of the visual axis. The material has been analyzed by reconstructing adjacent neurons in each array and then identifying systematically the synaptic connections between arrays. Most reconstructions were done manually by tracing the outlines of processes in successive sections onto acetate sheets aligned on a cartoonist's jig. The tracings were then digitized, stacked by computer, and printed with the hidden lines removed. The results have provided rather than the usual one-dimensional account of pathways, a three-dimensional account of circuits. From this has emerged insight into the functional architecture.

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