scholarly journals Analisis Teknologi Laboratoris Tembikar dari Situs-Situs Das Bengawan Solo, Kabupaten Bojonegoro, Provinsi Jawa Timur

KALPATARU ◽  
2015 ◽  
Vol 24 (1) ◽  
pp. 47
Author(s):  
M. Fadlan S.
Keyword(s):  
Chemical Element ◽  
Chemical Properties ◽  
Laboratory Analysis ◽  
Physical And Chemical Properties ◽  
The Past ◽  
The Difference ◽  
Food And Drink ◽  
Physical And Chemical ◽  
And Chemical Properties

Abstrak. Tembikar merupakan salah satu sisa benda budaya yang paling sering ditemukan dalam penelitian arkeologi, yang terbuat dari tanah liat yang dibakar. Analisis teknologi laboratoris tembikar dari situs-situs di DAS Bengawan Solo Bojonegoro, bertujuan untuk memperoleh hasil yang akurat tentang sifat fisik dan sifat kimia. Melalui kajian analisis teknologi laboratoris dapat digambarkan kualitas tembikar yang dibuat oleh para pengrajin pada masa lampau. Berdasarkan hasil analisis teknologi laboratoris tembikar dari situs-situs DAS Bengawan Solo, Bojonegoro mempunyai kualitas sedang hingga kualitas baik. Tembikar-tembikar tersebut termasuk dalam kategori peralatan sehari-hari yang berfungsi untuk menampung air, mengolah makanan dan untuk penyajian makanan serta minuman. Tingkat pembakarannya mencapai 600°-800° Celcius, dan warna tembikar didominasi warna gelap (dark colors) dibanding dengan warna terang (light colors). Adanya perbedaan prosentase dari setiap unsur kimia pada tembikar tersebut, tidak terlepas dari daya tahan mineral terhadap pelapukan.Abstract. Pottery, which is made of fired clay, is the most frequently found cultural remains during archaeological researches. Technological Laboratory Analysis on pottery from sites along the Bengawan Solo (Solo River) in Bojonegoro aims at obtaining accurate results about the nature of the physical and chemical properties. Through the technological laboratory analysis can be described the quality of pottery made by craftsmen in the past. Based on the results of the analysis, pottery from the sites along the Bengawan Solo, Bojonegoro Regency, have moderate up to good qualities. The pottery belongs to a category of daily equipment that serves to store water, cook food and to serve food and drink. The rate of heat during firing was up to 600°-800° Celsius, and the color of pottery is predominantly dark colors (black colors) with only a few light colors (bright colors). The difference in the percentage of each chemical element in the pottery is due to the durability of the minerals to weathering.

Topochemical synthesis of low-dimensional nanomaterials

Nanoscale ◽  
2020 ◽  
Vol 12 (43) ◽  
pp. 21971-21987
Author(s):  
Qicheng Zhang ◽  
Wenchao Peng ◽  
Yang Li ◽  
Fengbao Zhang ◽  
Xiaobin Fan
Keyword(s):  
Chemical Properties ◽  
Physical And Chemical Properties ◽  
Bulk Materials ◽  
The Past ◽  
Low Dimensional ◽  
Physical And Chemical ◽  
And Chemical Properties

Over the past several decades, nanomaterials have been extensively studied owing to having a series of unique physical and chemical properties that exceed those of conventional bulk materials.

scholarly journals Synthesis and applications of nanoporous perovskite metal oxides

2018 ◽  
Vol 9 (15) ◽  
pp. 3623-3637 ◽  
Author(s):  
Xiubing Huang ◽  
Guixia Zhao ◽  
Ge Wang ◽  
John T. S. Irvine
Keyword(s):  
Ionic Conductivity ◽  
Metal Oxides ◽  
Chemical Properties ◽  
Physical And Chemical Properties ◽  
Oxygen Mobility ◽  
Redox Behaviour ◽  
The Past ◽  
Physical And Chemical ◽  
Perovskite Type ◽  
And Chemical Properties

Perovskite-type metal oxides have been widely investigated and applied in various fields in the past several decades due to their extraordinary variability of compositions and structures with targeted physical and chemical properties (e.g., redox behaviour, oxygen mobility, electronic and ionic conductivity).

scholarly journals Effect of Bentonite on the Pelleting Properties of Iron Concentrate

2017 ◽  
Vol 2017 ◽  
pp. 1-6 ◽  
Author(s):  
Hao Liu ◽  
Bing Xie ◽  
Yue-lin Qin
Keyword(s):  
Water Absorption ◽  
Chemical Properties ◽  
Poor Quality ◽  
Physical And Chemical Properties ◽  
Iron Concentrate ◽  
Green Ball ◽  
Shock Temperature ◽  
Physical And Chemical ◽  
And Chemical Properties

The physical and chemical properties such as particle size, montmorillonite content, swelling degree, water absorption, and blue absorption of A, B, and C bentonites were studied under laboratory conditions. The effects of adding different quality and different proportion of bentonite on falling strength, compression strength, and shock temperature of green pellet were investigated. The experimental results show that the montmorillonite content, water absorption, and methylene blue absorption of bentonite-B are the highest. And the quality of bentonite-B is the best, followed by bentonite-C and bentonite-A poor quality. When the amount of bentonite-B reduced from 1.5% to 1.0%, the strength of green pellets and the shock temperature both decrease. As the same proportion of A, B, and C bentonites, the green-ball strength and shock temperature are as follows: bentonite-A > bentonite-B > bentonite-C.

Study on the Properties and Application of Optim™ Fine Fibers

2011 ◽  
Vol 287-290 ◽  
pp. 2561-2564
Author(s):  
Jiang Wei Yao ◽  
Wei Dong Yu
Keyword(s):  
Chemical Properties ◽  
Wool Fabric ◽  
Physical And Chemical Properties ◽  
Performance Difference ◽  
Merino Wool ◽  
Fine Fiber ◽  
The Difference ◽  
New Generation ◽  
Physical And Chemical ◽  
And Chemical Properties

Optim™ fine is a new generation of ultrafine wool fibres, which are transformed by stretching and setting from merino wool. The Optim™ fine retains some of the physical and chemical properties of merino wool, but the morphology and other properties changes, such as the diameter, length, lusture, breaking extension and shrinkage. These changes results in the performance difference btween the fabric woven from Optim™ fine and fine wool fiber. To clearly understande the reason of the difference, the morphological and physical properties changes of Optim™ fine was examined in this paper, and the performance difference between wool fabric and Optim™ fine fabric was evaluated by Fabric Assurance by Simple Testing(FAST). It was found that the decreasing in breaking extension and increasing in shrinkage of Optim™ fine resulted in the declining in formability and dimensional stability of Optim™ fine fabric. Suggestions on the ways of constructing Optim™ fine into fabric were also given according to the anlysis of relationship between the properties changes of Optim™ fine fiber and that of its fabric.

scholarly journals Studi kesesuaian kualitas perairan tambak ikan bandeng (Chanos chanos) di Kawasan Ekowisata Mangrove Sungai Tatah

2020 ◽  
Vol 9 (1) ◽  
Author(s):  
Doni Irawan ◽  
Leni Handayani
Keyword(s):  
Data Analysis ◽  
Research Methods ◽  
Water Samples ◽  
Chemical Properties ◽  
Physical And Chemical Properties ◽  
Chanos Chanos ◽  
Minimum Requirements ◽  
Physical And Chemical ◽  
And Chemical Properties

The research objective was to determine the quality of the milkfish pond waters (Chanos chanos) in the Tatah River Mangrove Ecotourism Area. This research was conducted from March to May 2020. Purposive sampling was one of the research methods used to collect data. Water samples were taken once a week (in the morning, afternoon and evening) from six sampling stations. The parameters observed included the physical and chemical properties of the waters. The data analysis used was scoring. The results of the research on the level of quality suitability of pond waters in the Tatah River Mangrove Ecotourism Area indicated that station 2, and 4 were very suitable level of conformity (S1) meaning that it is potential station while station 1, 3, 5 and 6 were quite appropriate (S2) which means that the areas meet the minimum requirements for use in milkfish (C. chanos) cultivation

scholarly journals The effect of genotype and lactation on yield and physicochemical properties of ewe milk

2014 ◽  
Vol 30 (3) ◽  
pp. 445-456 ◽  
Author(s):  
Z.Z. Ilic ◽  
A. Jevtic-Vukmirovic ◽  
Caro Petrovic ◽  
M.P. Petrovic ◽  
M.M. Petrovic ◽  
...  
Keyword(s):  
Chemical Properties ◽  
Physical And Chemical Properties ◽  
Genotype 1 ◽  
Genotype 2 ◽  
Total Milk ◽  
Minimal Difference ◽  
The Difference ◽  
Lactation Duration ◽  
Physical And Chemical ◽  
And Chemical Properties

Two genotype of sheep have been utilized in the conduct of the experiment composed of 60 ewes from Pirot x Virtemberg as genotype 1 and 60 ewes of Improved Pirot as genotype 2. All the ewes were reared under identical conditions and without any differences in nutrition and management during the whole period under study. The collection of Milk sampling was done in morning and evening during periods (1, 2, 3) of lactation duration. The average lactation duration and average total milk of the two genotypes were very close and has a minimal difference of 0.467 day and 1.562 kg, in favor of genotype 2. The differences between genotypes were not significant (P>0,05). Regarding physical and chemical properties of milk for both genotypes, the difference were very minimal such as follows; viscosity Pa x s - 0.006, electrical conductivity ? - 0.018, density kg/m3 -0,001, freezing, t 0C - 0.013, LD number - 0.028 total solids, % - 0.014, fat,% - 0,026, protein,% - 0.085, lactose,% - 0.038, ash,% - 0,021, acidity, 0SH - 0.209. The results indicated that the properties of milk for both genotypes were very near to each other. It can be interpreted that the breeds utilized in the experiment were comparable due to similar characteristics perhaps. The effect of genotype was very significant only for the % protein of the milk. The lactation periods were highly significant in all physical and chemical properties of milk.

The comparison of rapeseeds’ oils from hybrid and open-pollinated varieties by their heating values in the aspect of Diesel utilization

2010 ◽  
Vol 1 (1) ◽  
pp. 157-161
Author(s):  
E. Sarkozi ◽  
L. Janosi
Keyword(s):  
Energy Content ◽  
Methyl Esters ◽  
Research Work ◽  
Chemical Properties ◽  
Physical And Chemical Properties ◽  
Heating Value ◽  
Biofuel Feedstock ◽  
Physical And Chemical ◽  
And Chemical Properties

The rape is one of the suitable plant species for biofuel feedstock in Hungary. Currently there are over 100 admitted rape sorts recorded in Hungary and their oils’ application as biodiesel proposes new aspects of evaluation. From references it is noticeable that there are differences in the physical and chemical properties of the various rape sorts’ oils and rapeseed-methyl-esters. Our aim is to analyze the differences in the quality of the various rape sorts’ oils and to determine the most appropriate rape sort in the viewpoint of technical utilization. In the course of present research work we have measured the heating values of 21 various rapesorts’ oils -12 from open-pollinated varieties and 9 from hybrids- and examined the differences between them. The outcome values dispersed in the range of the heating values found in the references, but the differences between them are less then the predicted, the variance and the coefficient of variation are reasonably slight, so the examined rape sorts’ oils are similar in the viewpoint of the heating value. Furthermore, the energy content of the rapeseed oils is independent of the type (hybrid or open-pollinated variety) of the plant.

Design of 2D materials – MSi2CxN4-x (M = Cr, Mo, and W; x = 1 and 2) - with tunable electronic and magnetic properties

Nanoscale ◽  
2021 ◽  
Author(s):  
Bowen Li ◽  
Jiazhong Geng ◽  
Haoqiang Ai ◽  
youchao Kong ◽  
Haoyun Bai ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
2D Materials ◽  
Chemical Properties ◽  
First Principle ◽  
Physical And Chemical Properties ◽  
Two Dimensional ◽  
Electronic And Magnetic Properties ◽  
The Past ◽  
Physical And Chemical ◽  
And Chemical Properties

Two-dimensional (2D) materials have attracted increasing interest in the past decades due to their unique physical and chemical properties for diverse applications. In this work, we present a first-principle design...

scholarly journals The Bilateral Structure of Wool Cortex and Its Relation to Crimp

1955 ◽  
Vol 8 (2) ◽  
pp. 288 ◽  
Author(s):  
RDB Fraser ◽  
GE Rogers
Keyword(s):  
Cross Sections ◽  
Chemical Properties ◽  
Sulphur Content ◽  
Wool Fibre ◽  
Physical And Chemical Properties ◽  
Cortical Cells ◽  
Basic Dyes ◽  
The Difference ◽  
Physical And Chemical ◽  
And Chemical Properties

Xew evidence of the nature of the bilateral cortex in crimped wool is presented and discussed in relation to the physical and chemical properties of the wool fibre. The origin of the asymmetry in the cortex was studied by cutting cross sections of sheep skin and swelling plucked wool roots. It is shown that the bilateral structure is present before the cortex is keratinized and does not originate from an asymmetrical keratinization as has been suggested. Coarse wools, in which crimp is much less, are shown to possess a radial asymmetry in which the peripheral cortical cells are less accessible to basic dyes and have a higher sulphur content than the central cells. This is related to the difference between the curved follicles from which fine fibres are produced and the straighter follicles producing coarse fibres.

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