Processing of High-Quartz Porcelain Tile with Large Yellow Sand

2015 ◽  
Vol 655 ◽  
pp. 244-248
Author(s):  
Xiao Qing Wen ◽  
Xing Yong Gu ◽  
Ting Luo

In this study, the yellow sand waste with enormous reserves in the Inner Mongolia Tengger desert was taken as the main raw material mixed with the same regional clays for the infrared functional low-temperature porcelained tile. The mineral composition and granule feature of Tengri yellow sand as well as the micro-structure and infrared property of the fired body were discussed by the means of various testing such as the grain fineness distribution analysis, the XRD diffraction analysis, the SEM scanning electron microscope analysis, the coefficient of thermal expansion measure and the infrared performance detection. The results revealed that the natural mineral could be replaced by the yellow sand waste in large for preparing the environmental protection functional porcelained ceramics with favorable properties. The flexural strength of porcelained tiles sintered at 1140°C~1160°Ckeeps from 40 to 55Mpa when the high addition of yellow sand varies 75wt% to 90wt%. And the body is composed of high quartz as the main phase and little wollastonite phase which meets with the thermal shock resistant standard of the present architectural material .

Author(s):  
Siraj Salman Mohammad ◽  
Renata Oliveira Santos ◽  
Maria Ivone Barbosa ◽  
José Lucena Barbosa Junior

: Anthocyanins are widely spread in different kinds of food, especially fruits and floral tissues, there is an extensive range of anthocyanin compounds reach more than 600 exist in nature. Anthocyanins can be used as antioxidants and raw material for several applications in food and pharmaceutical industry. Consequently, a plenty of studies about anthocyanins sources and extraction methods were reported. Furthermore, many studies about their stability, bioactive and therapeutic properties have been done. According to the body of work, we firstly worked to shed light on anthocyanin properties including chemical, antioxidant and extraction properties. Secondly, we reported the applications and health benefits of anthocyanin including the applications in food processes and anthocyanin characteristics as therapeutic and prophylactic compounds. We reviewed anticancer, anti-diabetic, anti-fatness, oxidative Stress and lipid decreasing and vasoprotective effects of anthocyanins. In conclusion, because the importance of phytochemicals and bioactive compounds the research is still continuing to find new anthocyanins from natural sources and invest them as raw materials in the pharmaceutical and nutrition applications.


Author(s):  
Hidekazu Kobayashi ◽  
Ippei Amamoto ◽  
Takuma Yokozawa ◽  
Teruo Yamashita ◽  
Takayuki Nagai ◽  
...  

As the part of investigation for immobilization of the sludge as one of the radioactive wastes arising from the treatment of contaminated water at Fukushima Dai-ichi nuclear power plant, applicability of vitrification method has been evaluated as a candidate technique. The aim of this study is to evaluate the influence of NaCl as one of the main constituents of sludge, on glass formation and glass properties. Two kinds of iron phosphate glass (IPG) media in the xFe2O3-(100-x)P2O5, with x = 30 and 35 (mol%) were chosen and the glass formation, structure and properties including density, coefficient of thermal expansion, glass transition temperature, onset crystallization temperature and chemical durability of NaCl-loaded IPG were studied. The results are summarized as follows. Sodium chloride, NaCl could be loaded into IPG medium as Na2O and Cl contents and their loading ratio could be up to 19 and 15 mol%, respectively. Majority of Cl content of raw material NaCl was thought to be volatilized during glass melting. Loading NaCl into IPG induces to depolymerize glass network of phosphate chains, leads to decrease both glass transition and onset crystallization temperatures, and to increase coefficient of thermal expansion. NaCl-loaded IPG indicated good chemical durability in case of using 35Fe2O3-65P2O5 medium.


2016 ◽  
Vol 881 ◽  
pp. 383-386 ◽  
Author(s):  
Raimundo J.S. Paranhos ◽  
Wilson Acchar ◽  
Vamberto Monteiro Silva

This study evaluated the potential use of Sugarcane Bagasse Ashes (SBA) as a flux, replacing phyllite for the production of enamelled porcelain tile. The raw materials of the standard mass components and the SBA residue were characterized by testing by XRF, XRD, AG, DTA and TGA. Test samples were fabricated, assembled in lots of 3 units and sintered at temperatures of 1150 ° C to 1210 ° C. The results of the physical properties, mechanical properties and SEM of the sintered samples, showed that the formulation, G4 - in which applied 10% of SBA replacing phyllite, sintering temperature 1210 ° C showed better performance as the previously mentioned properties due to the formation of mullite crystals, meeting the prerequisites of standards for enamelled porcelain tile, while reducing the environmental impact and the cost of production.


Author(s):  
P.A. Popov ◽  
◽  
V.S. Babunova ◽  

Hormones are an integral part of milk and throughout lactation, the content of certain hormones is unstable. Hormones regulate the process of starting lactation of animals, the lactation process itself, and also the other functions of the body. Milk is of great importance for the growth of young animals and the formation of immunity. Milk is a special product in the diet and is an important food and raw material for the production of dairy products for people. It contains a large amount of protein, fat, carbohydrates, vitamins and trace elements in biologically available form. But at the same time, over the past few years, more and more evidence has emerged that hormones in dairy products can impact on human health. Thus, some estrogens and insulin-like growth factor IGF-1 are involved in the initiation and provocation of breast, prostate and endometrial tumors. That’s why, it is necessary to normalize and control the content of certain hormones in milk with highly sensitive methods.


2012 ◽  
Vol 4 (2) ◽  
pp. 212-227
Author(s):  
Angela Harutyunyan

The article is comprised of three exercises of "site writing" interrupted by theoretical and methodological intermissions. The sequences take the reader to a topographical and exegetical journey into various images, memory traces and narratives that treat reality as raw material for dreaming. Adopting architectural historian Jane Rendell's critical framework of site writing, the article aims at radical spatialization of the sites through which narratives emerge, memories are revisited and possibilities for the future are suggested. Site writing is not writing about spaces, but writing spaces, engaging the materiality of the images and the phenomenological encounters with them through spatiality and positioning of the images. Thus, images become sites through which the narrative unfolds. The image-sites that form the three key sequences include the juxtaposition of two towns-Kars and Giumryin Turkey and in Armenia respectively in a way that the images of the townscapes neither comment, nor repeat, but double each other; a journey through Los Angeles' Westin Bonaventure hotel and its relationship to the body and the landscape; and a reading of the latent possibilities of the material in artist Kasper Kovitz's landscape paintings and installations.


2018 ◽  
Author(s):  
Wenzhi Zhou ◽  
Shanshan Zhao ◽  
Shutao He ◽  
Qiuxiang Ma ◽  
Xinlu Lu ◽  
...  

AbstractHigh amylose starch, a desired raw material in the starch industry, can be produced by plants deficient in the function of branching enzymes (BEs). Here we report the production of transgenic cassava plants with starches containing up to 50% amylose due to the constitutive expression of hair-pin dsRNAs targeting the BE1 or BE2 genes. A significant decrease in BE transcripts was confirmed in these transgenic plants by quantitative real-time RT-PCR. The absence of BE1 protein in the BE1-RNAi plant lines (BE1i) and a dramatically lower level of BE2 protein in the BE2-RNAi plant lines (BE2i) were further confirmed by Western blot assays. All transgenic plant lines were grown up in the field, but with reduced biomass production of the above-ground parts and storage roots compared to wild type (WT). Considerably high amylose content in the storage roots of BE2i plant lines was achieved, though not in BE1i plant lines. Storage starch granules of BE1i and BE2i plants had similar morphology as WT, however, the size of BE1i starch granules were bigger than that of WT. Comparisons of amylograms and thermograms of all three sources of storage starches revealed dramatic changes to the pasting properties and a higher melting temperature for BE2i starches. Glucan chain length distribution analysis showed a slight increase in chains of DP>36 in BE1i lines and a dramatic increase in glucan chains between DP 10-20 and DP>40 in BE2i lines, compared to that of WT starch. Furthermore, BE2i starches displayed a B-type X-ray diffraction pattern instead of the A-type pattern found in BE1i and WT starches. Therefore, cassava BE1 and BE2 function differently in storage root starch biosynthesis; silencing of cassava BE1 or BE2 caused various changes to starch physico-chemical properties and amylopectin structure. We also report that remarkably high amylose content in cassava starch has been first obtained in transgenic cassava by silencing of BE2 expression, thus showing a high potential for future industrial utilization.


el–Hayah ◽  
2016 ◽  
Vol 5 (4) ◽  
pp. 143 ◽  
Author(s):  
Eko Budi Minarno

<p><em>Carica pubescens Lenne &amp; K. Koch is a tropical species that adapt to the plateau environment and low temperatures. In East Java, the plant is found in Cangar and Bromo region. Morphological, chemical content, and analysis of protein banding pattern on C. pubescens has been done, but more on the analysis of active compounds for pharmaceutical raw materials and its accumulation in the body of the plant has not been widely studied. Saponins on C. pubescens potential as a raw material of natural medicine in the treatment of Diabetes Mellitus (DM). This study aims to determine the content of saponin in leaf and petiole of C. pubescens in terms of absorbance values. Saponins were analyzed by qualitative form the foam test, color test, Thin Layer Chromatography (TLC) analytical and preparative. Quantitative test in the form of UV-Vis spectrophotometry results preparative TLC. This research was done at the Laboratory of Department of Biology and Chemistry UIN Maulana Malik Ibrahim Malang. The results showed that the leaf and petiole of C. pubescens positive for the saponins with the formation of stable foam for 60 seconds at 1.5 cm - 1.7 cm. The third positive samples containing saponins triterpene the ring test produces a brownish color. Isolation saponin by TLC shows the best ratio of eluent chloroform: methanol: water (14: 6: 1) compounds can be separated perfectly. Saponin absorbance values obtained three samples as follows: petiole samples from the region Cangar amounted to 0.852, leaf samples from the region Cangar amounted to 0.686, and leaf samples from Bromo region amounted to 0,629. The highest saponins found in organs petiole. Thus the petiole of C. pubescens has the potential to be used as a source of triterpene saponins which can be developed into a commercial herbal medicines.</em></p>


Materials ◽  
2020 ◽  
Vol 13 (18) ◽  
pp. 4146 ◽  
Author(s):  
Dian Yang ◽  
Li Li ◽  
Lei Cao ◽  
Zhimin Chang ◽  
Qian Mei ◽  
...  

Reactive oxygen species (ROS) in the body play an important role in various processes. It is well known that harmful high levels of ROS can cause many problems in living organisms in a variety of ways. One effective way to remove intracellular ROS is to use reducing materials that can enter the cell. Herein, we developed a strong reducing carbon nano-dot from a natural product, lutein, as an initial raw material. This is a hydrothermal synthesis method with the advantages of simplicity, high yield, mild reaction conditions, and environmental friendliness. The prepared carbon dots exhibit bright blue fluorescence, and have good water solubility and biocompatibility. In particular, the carbon dots can easily enter the cell and effectively remove ROS. Therefore, the carbon dots are thought to protect cells from oxidative damage by high levels of ROS.


2007 ◽  
Vol 336-338 ◽  
pp. 1130-1132
Author(s):  
Qiang Ren ◽  
Xiu Lan Wu ◽  
Xuan Meng He

High-purity alumina ceramics was prepared using high-purity α-Al2O3 powder as raw material, nitrates or oxides of magnesium, chromium and copper as additives by a wet ball milling with a later dry pressing forming and normal pressure sintering process. The influence of additives on the sintering temperature, microstructure and bending strength of the prepared alumina ceramics was studies. The results showed that the additive doped with nitrate can be dispersed uniformly in the body with molecule scale, and the oxides obtained by decomposing of nitrates have the higher reactivity. Thus, the nitrate additives have better capacity than oxide additives in reducing the sintering temperature and inhibiting the abnormal grain growth, and the alumina ceramics prepared by adding of nitrate additives have higher density and bending strength.


Author(s):  
Enrico Fenzi

The essay moves from the need to correctly interpret vv. 145-8 of canto VII of the Paradiso, alluding to the resurrection of bodies. In general, it was understood that the sacrifice of Christ, to which the discourse on the resurrection is directly connected, freed man from original sin, and thus restored him to the original condition in which the body would have been eternal as the fruit of direct creation (vv. 67-72), such as angels, the heavens and the raw material. In these terms, the explanation of the final verses, which makes the death of the body a sort of interval or parenthesis between two eternities, appears, if not explicitly heretical, very daring, and some scholars have thought of a peculiarly Dantean devolution. Moreover, it is in contrast with the doctrine clearly shown by Aquinas in his Compendium Theologiae, according to which originally the body was not properly immortal but rather rendered incorruptible by the soul that would have, so to say, adequate it to itself. In other words, the body would have enjoyed the privilege of the posse non mori, lost with the sin of our forefathers; only with the incarnation of Christ and with redemption such privilege would have changed nature, and the body would have acquired the prerogative of the non posse mori, which is of the real immortality and which it will enjoy at the time of the final judgment.


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