scholarly journals RELATIONSHIP BETWEEN MOISTURE CONTENT AND FLAMMABILITY OF CERRADO SPECIES IN SOUTHERN TOCANTINS

FLORESTA ◽  
2022 ◽  
Vol 52 (1) ◽  
pp. 122
Author(s):  
Marcileia Dias De Oliveira ◽  
Marcos Giongo
Keyword(s):  
Moisture Content ◽  
Plant Species ◽  
Correlation Coefficients ◽  
Anacardium Occidentale ◽  
Moisture Contents ◽  
Time To Ignition ◽  
The Relationship ◽  
Vatairea Macrocarpa ◽  
Flammability Parameters ◽  
Curatella Americana

This study aimed to analyze the relationship between moisture content and flammability of nine plant species from the Cerrado in southern Tocantins. The species studied were: Machaerium brasiliense, Qualea grandiflora, Luehea grandiflora, Campomanesia guaviroba, Astronium fraxinifolium, Curatella americana, Bauhinia forficata, Vatairea macrocarpa, and Anacardium Occidentale. The plants were analyzed at four moisture contents (M1, M2, M3, and M4). For each level, 50 samples (1 g ± 0.1 g) of each species were collected, and 50 repetitions of burning were performed. The parameters analyzed were: time to ignition (TI), frequency of ignition (FI), duration of combustion (DC), combustion index (CI), flammability value (FV), and height of flames (HF). Our results showed that moisture contents influence flammability in Cerrado plant species. The correlation coefficients between moisture and flammability parameters were r = 0.951 (TI), r = -0.962 (DC), r = -0.977 (HF), and r = -0.988 (FI).

Stability of Thiamine and Riboflavin During Extrusion Processing of Triticale

1976 ◽  
Vol 39 (4) ◽  
pp. 244-245 ◽  
Author(s):  
G. BEETNER ◽  
T. TSAO ◽  
A. FREY ◽  
K. LORENZ
Keyword(s):  
Moisture Content ◽  
Multiple Regression ◽  
Temperature Effects ◽  
Initial Moisture Content ◽  
Final Moisture Content ◽  
Whole Grain ◽  
Moisture Contents ◽  
Extrusion Processing ◽  
Nozzle Size ◽  
The Relationship

Triticale kernels were extruded using a Brabender Plasticorder extruder with ¾-inch rifled barrel and 1:1 flight depth ratio screw. Whole grain samples were extruded at initial moisture contents of 15, 20, and 25%. Debranned samples were extruded at an initial moisture content of 22%. Barrel temperatures of 350, 400, and 450 F and nozzle openings of 1/8 inch and 1/16 inch were used. The products were analyzed for thiamine and riboflavin content. Results were corrected for final moisture content and expressed as fraction retained. A multiple regression was done to determine the relationship between independent and derived variables, and the retention. Riboflavin retention was correlated simply as a function of barrel temperature. Thiamine retention of the debranned material was correlated as a function of nozzle size and barrel temperature. Thiamine retention of the whole grain samples was correlated for nozzle size, first and second order temperature effects, and confounding between nozzle size and temperature.

EFFECTS OF DIFFERENT SOIL MOISTURE TENSIONS ON FLAX AND CEREALS

1966 ◽  
Vol 46 (3) ◽  
pp. 213-216 ◽  
Author(s):  
S. J. Bourget ◽  
B. J. Finn ◽  
B. K. Dow
Keyword(s):  
Soil Moisture ◽  
Moisture Content ◽  
Winter Wheat ◽  
Plant Species ◽  
Spring Wheat ◽  
Soil Moisture Content ◽  
Near Field ◽  
Correlation Coefficients ◽  
Field Capacity

Young seedlings of flax and cereals, grown in a greenhouse, were subjected to 0, 12.5, and 25.0 cm of soil moisture tension for periods of 7, 14, and 21 days The grain, straw, and root yields of all plant species, except barky, increased with increasing soil moisture content was maintained near field capacity during the growth of plants. The yields of oats, winter wheat, and fall rye decreased with increasing duration of flooding, whereas those of barley, flax and spring wheat were variable. Correlation coefficients between yields of tops and roots were positive.

Relationship between Dielectric Constants and Moisture Contents

2011 ◽  
Vol 480-481 ◽  
pp. 109-112
Author(s):  
Ping Xu ◽  
Shan Shan Yan ◽  
Zhao Hui Bin
Keyword(s):  
Moisture Content ◽  
Evaluation Method ◽  
Dielectric Constants ◽  
Moisture Contents ◽  
Special Instrument ◽  
Filling Method ◽  
Under Construction ◽  
The Relationship ◽  
Compaction Degree ◽  
Properties Of Soil

The parameters that influence the dielectric properties of soil mainly include moisture content, density and temperature, in which moisture content is the most important. One subgrade under construction is selected as engineering example, the dielectric constants are tested with the special instrument, and the moisture content are tested with sand filling method, and then the tested data are analyzed, and the results reveal that: there are better relationship between dielectric constants and the tested moisture contents and compaction degree, and so the dielectric constants are to be tested and then the moisture contents and compaction degree would be calculated according to the relationship, which would be a rapid testing and evaluation method.

scholarly journals Forma e tamanho de grãos de soja para diversos teores de água

2018 ◽  
Vol 39 (6) ◽  
pp. 2821
Author(s):  
Wilker Alves Morais ◽  
Osvaldo Resende ◽  
Fernando Nobre Cunha ◽  
Vitor Marques Vidal ◽  
Nelmício Furtado da Silva ◽  
...  
Keyword(s):  
Moisture Content ◽  
Physical Properties ◽  
Surface Area ◽  
Initial Moisture Content ◽  
Correlation Coefficients ◽  
Volumetric Shrinkage ◽  
Linear Regression Models ◽  
Moisture Contents ◽  
Soybean Cultivars ◽  
Grain Moisture

Physical properties of soybean grains present differences as a function of cultivars and moisture content, with the correlation between physical properties. This study aimed to determine the characteristics related to the physical properties of grains with different moisture contents of three soybean cultivars. The experimental design was completely randomized design in a 3 × 6 factorial scheme with three replications, consisting of three soybean cultivars (6266 RSF IPRO, BMX Potência RR, and 14403Z6001) and six grain moisture contents (11, 13, 15, 17, 19, and 21% wb). Soybean grains presented an initial moisture content of 11.0, 11.0, and 10.8% wb, respectively for 6266 RSF IPRO, BMX Potência RR, and 14403Z6001. The other moisture contents were obtained by soaking in a BOD chamber maintained at 25 °C and 93% of relative humidity. We assessed volume, roundness, sphericity, surface area, volumetric shrinkage, and volumetric shrinkage rate. The data were submitted to the analysis of variance by the F-test (p < 0.05) and when significant, regression analysis was performed for grain moisture contents and the means of cultivars were compared by the Tukey’s test. Pearson’s correlation analysis was also carried out to represent the linearity between grain physical properties. The cultivar BMX Potência RR obtained the highest results for volume, roundness, sphericity, and surface area. Volume and surface area increased as the moisture content of soybean grains increased; the opposite was observed for roundness and sphericity. A linear increase in volumetric shrinkage was observed as moisture content increased. The values of the correlation coefficients of the linear regression models can be used to describe the relationships between physical properties.

scholarly journals Dielectric Characteristics of Unsaturated Loess and the Safety Detection of the Road Subgrade Based on GPR

2018 ◽  
Vol 2018 ◽  
pp. 1-8 ◽  
Author(s):  
Gao Lv ◽  
Jie Yang ◽  
Ning Li ◽  
Dexiu Hu ◽  
Yan Zhang ◽  
...  
Keyword(s):  
Moisture Content ◽  
Relative Permittivity ◽  
Dielectric Characteristics ◽  
The Road ◽  
Moisture Contents ◽  
Unsaturated Loess ◽  
Ground Penetrating ◽  
Engineering Practices ◽  
The Relationship ◽  
Permittivity Model

We present a moisture content and permittivity model to simultaneously detect and estimate defects in loess subgrade. Based on the ground-penetrating radar (GPR) method, the dielectric properties of loess in the northwest of China and the imaging feature of the moisture content of different strata were studied. The relative permittivity of loess with different moisture contents was experimented in the laboratory. It was found that the relative permittivity of unsaturated loess was positively related to moisture content. The relationship between relative permittivity and moisture content in different antenna frequencies of GPR was analyzed. Electromagnetic wave reflection rules in the loess interface were studied using the numerical method with different moisture contents. With the increase in moisture content, the amplitude of GPR was increased. When the above conclusions were applied in the engineering practices, there are good effects to detect the defects of the road subgrade. It is a significant guidance for determining the qualitative research of defects in the roadbed.

Grading High Moisture Farmer Stock Peanut Lots1

2001 ◽  
Vol 28 (1) ◽  
pp. 38-43 ◽  
Author(s):  
P. D. Blankenship ◽  
M. C. Lamb ◽  
C. L. Butts ◽  
T. B. Whitaker ◽  
E. J. Williams
Keyword(s):  
Moisture Content ◽  
Correlation Coefficients ◽  
State Inspection ◽  
Federal State ◽  
High Moisture ◽  
Moisture Contents ◽  
Standard Procedures ◽  
Marketing Data ◽  
The U.S

Abstract Farmers in the U.S. are required to market peanuts as identity preserved lots with less than or equal to 10.49% moisture content (MC) wet basis. A comparison of peanut grades, weights, and values at moisture contents above (Hmc) and below (Lmc) 10.49% was conducted at 16 buying points during crop year 1998 and at 22 points in 1999. Buying points were located in all three U.S. peanut-producing areas both years. Randomly selected Hmc lots of runner-, spanish-, and virgina-type peanuts were weighed and unofficially graded by Federal State Inspection Serv. personnel with standard procedures. Lots were cured to MC ≤ 10.49% and graded officially for farmer marketing. Data from both years were combined for analysis. Both Hmc and Lmc grades were conducted on 543, 62, and 81 runner-, spanish-, and virginia-type lots, respectively. Moisture contents for runner type averaged 16.3% at Hmc grading and 8.7% at Lmc grading; for spanish type, 15.8 and 8.7%; and for virginia type, 17.0 and 9.1%. Only 3.8% of all lots evaluated had Hmc moisture contents greater than 25%. Equations were derived that predicted Lmc grade factors, lot weights (LW) and lot values (LV) from measured Hmc factors by peanut type. Equations to estimate Lmc LW and LV for runner-type peanuts had correlation coefficients of 0.998 and 0.997, respectively. Correlation coefficients for spanish type Lmc LW and LV were 0.998 and 0.995 and for virginia type 0.996 and 0.993, respectively. Derived equations for Lmc grade factors, LW, and LV may offer an alternative modification in U.S. peanut grading and farmer marketing allowing an increase in the maximum MC at grading.

CYTOSPORA CANKER OF POPLARS: BARK WOUNDING IN RELATION TO CANKER DEVELOPMENT

1963 ◽  
Vol 41 (2) ◽  
pp. 303-310 ◽  
Author(s):  
W. J. Bloomberg ◽  
S. H. Farris
Keyword(s):  
Moisture Content ◽  
Populus Trichocarpa ◽  
Qualitative And Quantitative ◽  
Moisture Contents ◽  
Cytospora Chrysosperma ◽  
Canker Development ◽  
The Relationship ◽  
Cytospora Canker

Cuttings of Populus trichocarpa Torr. and Gray, P. × canadensis Moench 'Regenerata' and P. × canadensis ‘Robusta Bachelieri’ were adjusted to three different moisture contents, then wounded by scorching the bark. The moisture treatments differed significantly in their effects on the histological responses in tissues around the scorch wounds, the greatest contrast being in the mode of tannin deposition. Lignification was also affected by moisture content; however, fewer cells were involved in lignin changes than in tannin deposition. No suberization was observed as a result of wounding. There were qualitative and quantitative differences among the poplar varieties with respect to tannin deposition.When wounds were inoculated with Cytospora chrysosperma (Pers.) Fr., the growth of canker varied inversely as the number of tanniferous cells, the width of the tanniferous zone, and the number of lignified cells. The correlation with tannin deposition was much stronger than that with lignification. These findings suggested that the relationship previously observed between Cytospora canker growth and moisture content may operate partly through the mechanism of tannin deposition.

scholarly journals Moisture sorption isotherms of millet seeds

2000 ◽  
Vol 18 (No. 3) ◽  
pp. 86-90 ◽  
Author(s):  
N.D. Menkov ◽  
D.I. Gelyazkov
Keyword(s):  
Experimental Data ◽  
Relative Humidity ◽  
Moisture Content ◽  
Equilibrium Moisture Content ◽  
Sorption Isotherms ◽  
Moisture Sorption ◽  
Static Method ◽  
Moisture Contents ◽  
Moisture Sorption Isotherms ◽  
The Relationship

The equilibrium moisture contents were determined for millet seeds of two cultivars using the gravimetric static method at 10, 25 and 40°C over a range of relative humidities from 0.112 to 0.868. The sorption capacity of the seeds decreased with an increase in temperature at constant relative humidity. The hysteresis effect is not distinctly expressed but statistically significant. The differences between equilibrium moisture contents of the cultivars are small. Four models were applied for analyzing the experimental data using the following equations: modified Chung-Pfost, modified Halsey, modified Oswin, and modified Henderson. The modified Chung-Pfost model was found to be the most suitable for describing the relationship between equilibrium moisture content, relative humidity and temperature.

Reliability of the Minimum Masking Level as Outcome Variable in Tinnitus Clinical Research

2020 ◽  
Vol 29 (3) ◽  
pp. 429-435
Author(s):  
Patricia C. Mancini ◽  
Richard S. Tyler ◽  
Hyung Jin Jun ◽  
Tang-Chuan Wang ◽  
Helena Ji ◽  
...  
Keyword(s):  
Standard Deviation ◽  
High Frequency ◽  
Pearson Correlation ◽  
Correlation Coefficients ◽  
Outcome Variable ◽  
Reliable Estimate ◽  
Moderate Correlation ◽  
Trained Subjects ◽  
The Relationship ◽  
Minimum Intensity

Purpose The minimum masking level (MML) is the minimum intensity of a stimulus required to just totally mask the tinnitus. Treatments aimed at reducing the tinnitus itself should attempt to measure the magnitude of the tinnitus. The objective of this study was to evaluate the reliability of the MML. Method Sample consisted of 59 tinnitus patients who reported stable tinnitus. We obtained MML measures on two visits, separated by about 2–3 weeks. We used two noise types: speech-shaped noise and high-frequency emphasis noise. We also investigated the relationship between the MML and tinnitus loudness estimates and the Tinnitus Handicap Questionnaire (THQ). Results There were differences across the different noise types. The within-session standard deviation averaged across subjects varied between 1.3 and 1.8 dB. Across the two sessions, the Pearson correlation coefficients, range was r = .84. There was a weak relationship between the dB SL MML and loudness, and between the MML and the THQ. A moderate correlation ( r = .44) was found between the THQ and loudness estimates. Conclusions We conclude that the dB SL MML can be a reliable estimate of tinnitus magnitude, with expected standard deviations in trained subjects of about 1.5 dB. It appears that the dB SL MML and loudness estimates are not closely related.

Energetic relationships for crushing of soil clods

2006 ◽  
Vol 2 (1) ◽  
pp. 51-72
Author(s):  
István Patay ◽  
Virág Sándor
Keyword(s):  
Moisture Content ◽  
Specific Energy ◽  
Soil Moisture Content ◽  
Energy Requirement ◽  
Clay Content ◽  
Clay Soils ◽  
Rigid Support ◽  
Soil Plasticity ◽  
Specific Energy Requirement ◽  
The Relationship

Clod crushing is a principal problem with soils of high clay content. Therefore, there is a need for determining the conditions for clod breaking and clod crushing. The objective of the work was to develop a special purpose tool for single clod breaking both by rigid support of the clod and by a single clod supported by soil and to develop a machine for clod crushing. Furthermore, the purpose was to determine the relationship between the specific energy requirement for clod crushing in the function of soil plasticity and the soil moisture content by the means of the developed tool and machine. The main result of the experiments is summarized in a 3D diagram where the specific energy requirement for soil clod crushing is given in the function of the moisture content and the plasticity index for different clay soils.

Sign in / Sign up

Export Citation Format

Share Document