A COMPARISON OF VARIOUS MEANS OF MEASURING THE DEGREE OF DECOMPOSITION OF VIRGIN PEAT MATERIALS IN THE CONTEXT OF THEIR RELATIVE BIODEGRADABILITY

1979 ◽  
Vol 59 (4) ◽  
pp. 397-400 ◽  
Author(s):  
M. P. LÉVESQUE ◽  
S. P. MATHUR
Keyword(s):  
Chemical Properties ◽  
Fiber Content ◽  
Physical And Chemical Properties ◽  
Physical And Chemical ◽  
Better Than ◽  
And Chemical Properties

Eleven physical and chemical properties of 26 peat materials from a total of five virgin profiles were determined and statistically analyzed for correlations among attributes that relate to the degree of decomposition, and with the rates at which the materials biodegraded. Estimation of fiber content made routinely by pedologists in the field correlated with relative, biodegradability better than any other criterion of decomposition and humification.

scholarly journals The Characteristics of Buffalo Hide as Raw Material for Gelatin Production

2017 ◽  
Vol 3 (2) ◽  
Author(s):  
Sri Mulyani ◽  
F.M.C. Sigit Setya Budi ◽  
Yudi Pranoto ◽  
Umar Santoso
Keyword(s):  
Chemical Properties ◽  
Gel Strength ◽  
Raw Material ◽  
Physical And Chemical Properties ◽  
Hydroxyproline Content ◽  
Collagen Density ◽  
Physical And Chemical ◽  
Better Than ◽  
And Chemical Properties

This study was aimed to observe the physical and chemical properties of buffalo hide as raw material for gelatin production by pretreatment using alkali-acid. Buffalo hide was observed on three sections, i.e. back (butt/croupon), abdomen (belly) and shoulder. The physical properties of the hide were analysed through the measurement of hide thickness, whereas the chemical properties were analysed by determining the proximate and amino acid composition. The qualities of gelatin (gel strength, viscosity and pH) were compared to standard commercial gelatin and Gelatin Manufactures Institute of America (GMIA). Gelatin extraction was done using a combination pretreatment alkali (0.5M NaOH) and acid (0,9M HCl). The results showed that butt section had collagen density was best compared to shoulder and belly. The thickness of butt (10.219 ± 0.318 mm) smaller than the shoulder (11.365 ± 0.389 mm), but thicker than the belly. The protein and hydroxyproline content on the butt was the highest, resulting the value 27.517 ± 0.049% and 97.330 ± 0.331 ppm, respectively. Extraction using 0.9 M hydrochloric acid produced yield 29.17 ± 2.12%. The gel strength 242.35 ± 12.90 g Bloom, viscosity 16.37 ± 1.5 cp and pH 5.15 ± 0.05. The gelatin quality meets the standards of quality of GMIA (2012) even better than commercial gelatin.

Study on Decolorization of Sugar Cane Juice Using Activated Carbons

2012 ◽  
Vol 529 ◽  
pp. 376-379
Author(s):  
Zhen Fa Zhang ◽  
Guang Shan Mu ◽  
Jin Yun Peng ◽  
Meng Zhou ◽  
Hao Wen ◽  
...  
Keyword(s):  
Sugar Cane ◽  
Activated Carbons ◽  
Chemical Properties ◽  
Physical And Chemical Properties ◽  
Cane Juice ◽  
Decolorization Efficiency ◽  
Sugar Cane Juice ◽  
Physical And Chemical ◽  
Better Than ◽  
And Chemical Properties

Sugar cane juice decolorization was studied using four commercial activated carbons. In an attempt to relate decolorizing performances to the characteristics, reaction time and temperature, the color removal capabilities of activated carbons were measured. The four commercial activated carbons showed different decolorization efficiencies, which could be related to their physical and chemical properties. The decolorization efficiency of powdered activated carbon was much better than the others.

High Quality Al2O3-ZrO2-C Slide Gate Properties Adding Si-Fe Sintered by both Nitrogen and Carbon Monoxide Atmosphere

2011 ◽  
Vol 194-196 ◽  
pp. 1542-1546
Author(s):  
Lei Liu ◽  
Yong Li ◽  
Ya Wei Zhai ◽  
Wen Dong Xue ◽  
Jun Hong Chen
Keyword(s):  
Carbon Monoxide ◽  
Slide Gate ◽  
Chemical Properties ◽  
Fine Powder ◽  
Physical And Chemical Properties ◽  
High Quality ◽  
Physical And Chemical ◽  
Flowing Atmosphere ◽  
Better Than ◽  
And Chemical Properties

The Si-Fe (≤0.043 mm) fine powder was added to the Al2O3-ZrO2-C slide gate, and the influences of adding different Si-Fe contents (2wt%, 4wt%, 6wt%, 8wt%) are studied. Two different firing ways of nitridation and carbonazation atmosphere were used. The experimental results indicated that the addition of Si-Fe improve the physical and chemical properties of the slide gate, the performance is the best when the addition of Si-Fe is 6wt% and the properties of slide gate sintering in N2-flowing atmosphere is better than that in CO-flowing atmosphere. Si-Fe will react with nitrogen and generate Si3N4 in the N2-flowing atmosphere, while it will react with C or CO to produce SiC in CO atmosphere.

Fire-Resistant Fluids for General Hydraulic and Steam Turbine Systems

1967 ◽  
Vol 182 (1) ◽  
pp. 109-134 ◽  
Author(s):  
A. C. M. Wilson
Keyword(s):  
Power Plant ◽  
Physical Properties ◽  
Chemical Stability ◽  
Chemical Properties ◽  
Phosphate Esters ◽  
Physical And Chemical Properties ◽  
Corrosion Properties ◽  
Physical And Chemical ◽  
Better Than ◽  
And Chemical Properties

Major items of C.E.G.B. power plant are now being designed to operate at high steam temperatures and hydraulic pressures. In consequence, the risk of fires due to leaking petroleum lubricants is increasing. Suitable fire-resistant (f.r.) fluids are therefore desirable. Some of these have, however, given rise to difficulties in service due to changes in their physical and chemical properties. The physical properties of non-aqueous synthetic f.r. fluids (i.e. phosphate esters and chlorinated diphenyls) have been surveyed, and their chemical stability and anti-corrosion properties determined. Whilst the physical properties of the phosphate esters are better than those of the chlorinated diphenyls the chemical stability and corrosion properties are much worse.

scholarly journals Influence of Jackfruit Pulp on the Quality and Shelf Life of Jackfruit Cake

2015 ◽  
Vol 8 (1) ◽  
pp. 59-64 ◽  
Author(s):  
MA Haque ◽  
R Begum ◽  
AZ Shibly ◽  
MM Sultana ◽  
A Khatun
Keyword(s):  
Statistical Analysis ◽  
Chemical Properties ◽  
Sensory Attributes ◽  
Physical And Chemical Properties ◽  
Fruit Pulp ◽  
Overall Acceptability ◽  
Physical And Chemical ◽  
Quality And Shelf Life ◽  
Better Than ◽  
And Chemical Properties

This study was designed to develop cakes incorporating jack-fruit pulp. The seed free jackfruit bulbs blend were used at the level of 10%, 20%, 30% and 40% to prepare jackfruit cake The physical and chemical properties of cakes were analyzed and compared with plane cake (without jack-fruit pulp).The cake containing 10% jack-fruit pulp was best among the samples on the basis of rust and crumb colour and texture of the cakes..The flavours of the cake containing 20% jack-fruit pulp were better than other cakes. The statistical analysis of organoleptic test response of sensory attributes revealed that colour, flavour, taste, texture and overall acceptability werehigher in the cakes containing 10% and 20% jackfruitpulp than normal cake.Shelf life of jack-fruitcakes were decreased with the increased level of substitution of jackfruit pulp during seven day storage on the basis of microbial count.Cake containing 10% jack-fruit showed acceptable physical characteristics, sensory attributes and microbial load.J. Environ. Sci. & Natural Resources, 8(1): 59-64 2015

Study on Forming Process of Plant Fiber Multilayer Decorative Board (I) - Effect of Fiber Content on the Properties

2013 ◽  
Vol 468 ◽  
pp. 3-7 ◽  
Author(s):  
Hong Cheng He ◽  
Chao Chen
Keyword(s):  
Chemical Properties ◽  
Fiber Content ◽  
Development Prospect ◽  
Physical And Chemical Properties ◽  
Plant Fiber ◽  
Forming Process ◽  
Environmental Characteristic ◽  
Physical And Chemical ◽  
And Chemical Properties

This paper mainly studied on the effect and experiment of fiber content of plant fiber multilayer decorative board, the results show that: when the fiber content is 30% in the composite, each property can achieve better. The product has good physical and chemical properties, and environmental characteristic, it has also reached the indoor furniture use requirements and can be used to replace the ordinary artificial board,.The product is completely no harm to environment in both producing and using, and has a broad development prospect.

scholarly journals Evaluasi sifat fisika, kimia dan kandungan logam berat di dalam nata de coco yang dibuat menggunakan sumber nitrogen dari NPK

2021 ◽  
Vol 12 (2) ◽  
pp. 250-256
Author(s):  
Budi Santosa ◽  
Wirawan Wirawan
Keyword(s):  
Heavy Metals ◽  
Chemical Properties ◽  
Nitrogen Sources ◽  
Total Sample ◽  
Fiber Content ◽  
Physical And Chemical Properties ◽  
Physical Chemical ◽  
Physical And Chemical ◽  
Cu And Zn ◽  
And Chemical Properties

Nata de coco one of the beverage products produced from fermented coconut water using the help of starter Acetobacter xylinum. This product is very popular with people ranging from children to parents because the shape and texture resembles a gel.  This study aims to evaluate the physical, chemical and heavy metal content in nata de coco made using nitrogen sources from NPK. The experimental plan used by The Complete Randomized Plan (RAL) is a single factor, the factor is the concentration of NPK consisting of 5 levels of K1 = 0.25%, K2 = 0.5%, K3 = 1%, K4 = 1.5%, K5 = 2%.  Each treatment was repeated 5 times and the total sample observed a total of 25 pieces. The observed observation parameters of nata thickness, nata weight, total fiber content of nata and metal residue content in nata include Cu, Zn, Pb metals, all of which are observed at the end of fermentation (the 14th day of fermentation). The initial parameters of the formation of nata are observed from the beginning of fermentation until the nata sheet is first formed. The results showed that nata de coco made using nitrogen source from NPK concentration of 0.1% has the best physical and chemical properties namely thickness of nata: 1,438 cm, weight of nata: 309 grams, initial formation of nata 3.2 days and total fiber content of nata: 4.024%. The use of NPK produces residues in the form of heavy metals Cu and Zn while pb heavy metals are undetectable. The higher the concentration of NPK given as a source of nitrogen, the higher the residues of heavy metals Cu and Zn in the nata de coco.

Statistical criteria of stellar population types

1966 ◽  
Vol 24 ◽  
pp. 101-110
Author(s):  
W. Iwanowska
Keyword(s):  
Stellar Population ◽  
Chemical Properties ◽  
Spectrophotometric Study ◽  
Physical And Chemical Properties ◽  
Population Type ◽  
The Galaxy ◽  
Distribution Parameters ◽  
Physical And Chemical ◽  
Statistical Criteria ◽  
And Chemical Properties

In connection with the spectrophotometric study of population-type characteristics of various kinds of stars, a statistical analysis of kinematical and distribution parameters of the same stars is performed at the Toruń Observatory. This has a twofold purpose: first, to provide a practical guide in selecting stars for observing programmes, second, to contribute to the understanding of relations existing between the physical and chemical properties of stars and their kinematics and distribution in the Galaxy.

Response of corn (Zea mays L.) to various organic-based fertilizers in marginal upland of Sta. Rita, Samar

2017 ◽  
pp. 31-43
Author(s):  
Berta Ratilla ◽  
Loreme Cagande ◽  
Othello Capuno
Keyword(s):  
Block Design ◽  
Management Strategies ◽  
Chemical Properties ◽  
Organic Fertilizers ◽  
Growth And Yield ◽  
Physical And Chemical Properties ◽  
Total N ◽  
Randomized Complete Block Design ◽  
Physical And Chemical ◽  
And Chemical Properties

Organic farming is one of the management strategies that improve productivity of marginal uplands. The study aimed to: (1) evaluate effects of various organic-based fertilizers on the growth and yield of corn; (2) determine the appropriate combination for optimum yield; and (3) assess changes on the soil physical and chemical properties. Experiment was laid out in Randomized Complete Block Design, with 3 replications and 7 treatments, namely; T0=(0-0-0); T1=1t ha-1 Evans + 45-30-30kg N, P2O5, K2O ha-1; T2=t ha-1 Wellgrow + 45-30-30kg N, P2O5, K2O ha-1; T3=15t ha-1 chicken dung; T4=10t ha-1 chicken dung + 45-30-30kg N, P2O5, K2O ha-1; T5=15t ha-1 Vermicast; and T6=10t ha-1 Vermicast + 45-30-30kg N, P2O5, K2O ha-1. Application of organic-based fertilizers with or without inorganic fertilizers promoted growth of corn than the control. But due to high infestation of corn silk beetle(Monolepta bifasciata Horns), its grain yield was greatly affected. In the second cropping, except for Evans, any of these fertilizers applied alone or combined with 45-30-30kg N, P2O5, K2O ha-1 appeared appropriate in increasing corn earyield. Soil physical and chemical properties changed with addition of organic fertilizers. While bulk density decreased irrespective of treatments, pH, total N, available P and exchangeable K generally increased more with chicken dung application.

Sign in / Sign up

Export Citation Format

Share Document