scholarly journals Retention of Nitrate and Phosphate in Soil and their Subsequent Uptake by Plants

1970 ◽  
Vol 43 (1) ◽  
pp. 67-76 ◽  
Author(s):  
MS Islam ◽  
SM Ullah ◽  
TH Khan ◽  
SM Imamul Huq
Keyword(s):  
Key Words ◽  
Plant Uptake ◽  
Column Leaching ◽  
Ipomoea Aquatica ◽  
Ph Values ◽  
Phosphate Retention ◽  
Leaching Experiment ◽  
Set Up ◽  
Key Words Nitrate

A laboratory based column leaching experiment was set up to study the retention of nitrate (NO3- ) and phosphate (PO43-) in three Bangladesh soils (Ghatail, Tejgaon and Sonatola) and their subsequent uptake by plants (Ipomoea aquatica). The investigation showed that the higher the clay contents, the higher was the retention of NO3- and PO43- by the soils and the lesser was their transfer into the growing plants. Again the higher the pH values in soils, the lower was the retention of NO3- and PO43- elements retained in the soils and the higher was the transfer of the elements into the growing plant. Retention of nitrate and phosphate followed the order: Ghatail>Tejgaon> Sonatola while the transfer to plant was in the order Sonatola>Tejgaon>Ghatail. Key Words: Nitrate, Phosphate, Retention, Leaching, Plant Uptake. DOI: 10.3329.bjsir.v43i1.858 Bangladesh J. Sci. Ind. Res. 43(1), 67-76, 2008

THE PHYSICOCHEMICAL PROPERTIES OF GLUCOMANNAN FLOUR OF AMORPHOPHALLUS PAEONIIFOLIUS CULTIVALED IN THUA THIEN HUE

2014 ◽  
pp. 87-92
Author(s):  
Thi Hoai Nguyen ◽  
Thi Van Thi Tran ◽  
Trung Hieu Le ◽  
Thi Mai Huong Vo
Keyword(s):  
Physical Chemistry ◽  
Physicochemical Properties ◽  
Key Words ◽  
Quality Standards ◽  
Spectroscopic Methods ◽  
Research Results ◽  
Beneficial Effects ◽  
Laser Analysis ◽  
Set Up

Background: There are many beneficial effects such as reducing the risk of obesity, diabetes, hyperlipidemia and hypercholesterolemia from Amorphophallus sp. This reports are research results of physicochemical properties of glucomannan flour from tubers of Amorphophallus paeoniifolius cultivated in Thua Thien Hue. Materials: Glucomannan flour from tubers of Amorphophallus paeoniifolius (Dennst) Nicolson – Araceae cultivated in Thua Thien Hue. Method: Identify the quantity and physicochemical properties by many methods such as using enzymes, chemistry, physical chemistry, spectroscopic methods, laser analysis. Results: Identified starch and glucomannan quantity, physicochemical properties and indicators of microbiological of glucomannan flour. Conclusion: From the achieved results set up quality standards of glucomannan flour from tubers of Amorphophallus paeoniifolius cultivated in Thua Thien Hue. Key words: Glucomannan, starch, β-amylase.

HUBUNGAN ANTARA JIWA WIRAUSAHA MAHASISWA DENGAN MOTIVASI, LINGKUNGAN KELUARGA DAN PENDIDIKAN PADA POLITEKNIK LP3I JAKARTA KAMPUS BEKASI

2018 ◽  
Vol 6 (2) ◽  
pp. 14
Author(s):  
Darmawan Darmawan ◽  
Jajang Setiawan
Keyword(s):  
Key Words ◽  
Family Background ◽  
Research Result ◽  
Education Institution ◽  
Education Level ◽  
Study Program ◽  
Economic Level ◽  
The Subject ◽  
Set Up

<p align="center"><strong>ABSTRACT</strong><strong></strong></p><p align="center"><strong> </strong></p><p align="justify"><em>Today, the growth of economic level begins to rise again that is generated by the increase of   different kind of product and different kind of businesses that are offered by both individual businesses that are done easly independently. To deal with all of business trends, the education institution has to prepare the students to be able to set up a business idenpendedntly through the subject of entrepeuneurship.  As it is regulated in Vision and Mision of study program and is also regulated in the curriculum of lectures. </em><em></em></p><p align="justify"><em>This research is aimed at to find out the correlation between the spirit of entrepeunership and motivation , Family background, and education level. Based on the research result, the finding showed that the spirit of entrepeneurship correlated with the motivation and family background. Based on the finding, it was also found that education level did not correlate with that the spirit of entrepeneurship. In regard with the findings, it is important to develop more the motivation of students to touch up the sperit of entrepenuership. </em><em></em></p><p align="justify"> </p><p><em>Key words: Entrepenuer, Students, Entrepeuneurship. </em></p>

Soil acidity in 1970 and 1989 in a coniferous forest in southwest Finland

1998 ◽  
Vol 78 (3) ◽  
pp. 477-479 ◽  
Author(s):  
C. J. Westman ◽  
S. Jauhiainen
Keyword(s):  
Key Words ◽  
Soil Ph ◽  
Soil Acidity ◽  
Mineral Soil ◽  
Coniferous Forest ◽  
Soil Layers ◽  
Water Suspension ◽  
Ph Values ◽  
Humus Layer ◽  
Repeated Sampling

Forest soil pH in southwest Finland was measured with identical sampling and analysing methods in 1970 and 1989. The acidity of the organic humus layer increased significantly as pH values measured on water and on salt suspensions decreased between the two sampling dates. For the mineral soil layers, no unambiguous trend was found. pH values measured on salt suspension tended to be unchanged or lower, while pH on water suspension in some soil layers were even higher in 1989 than in 1970. Key words: pH, repeated sampling

Using red mud bauxite for the neutralization of acid mine tailings: a column leaching test

2006 ◽  
Vol 43 (11) ◽  
pp. 1167-1179 ◽  
Author(s):  
M Paradis ◽  
J Duchesne ◽  
A Lamontagne ◽  
D Isabel
Keyword(s):  
Acid Mine Drainage ◽  
Red Mud ◽  
Mine Drainage ◽  
Field Investigation ◽  
Drainage Water ◽  
Leaching Test ◽  
Column Leaching ◽  
Acid Mine ◽  
Column Leaching Test ◽  
Set Up

Acid mine drainage (AMD) is an environmental problem produced when sulphides come in contact with an oxidant (± bacteria) and water, producing acid generation and metals leaching. One solution proposed is to use red mud bauxite (RMB), which is very alkaline, to neutralize oxidized acidic tailings. A column leaching test has been set up to evaluate major aspects of field constraints. First, a field investigation was conducted in which RMB was spread in aggregates before mixing with tailings. This setup has been reproduced in the laboratory and compared with a homogeneous mixture. The analyses of the water effluent do not show any important difference between the two mixtures. Second, some studies show that the addition of Cl brine to RMB helps to maintain the long-term neutralization potential. Brine addition increased the concentrations of Ca, Mg, Na, K, and Cu in drainage water. Columns were set up with 10% and 20% RMB to evaluate the effect of the quantity applied. Addition of greater than 20% RMB increases the leachate alkalinity and concentrations of Al, Cu, Pb, As, Fe, and SO42– in drainage waters. The addition of 10% RMB, however, significantly improves the quality of drainage water over a period of 125 days and results in concentrations and pH values within the ranges of those recommended by Directive 019 of the Ministère de l'environnement, Québec.Key words: acid mine drainage, red mud bauxite, tailings, environmental geochemistry, neutralization.

scholarly journals Retracted: Study Hydrogeochemistry Exploration of Thermal Spring in Ramsar Area, (North of Iran)

2013 ◽  
Vol 2 (11) ◽  
pp. 134-143
Author(s):  
Hamid Reza Samadi
Keyword(s):  
Surface Temperature ◽  
Classification System ◽  
Relevant Information ◽  
Thermal Spring ◽  
Thermal Springs ◽  
High Concentration ◽  
Temperature Conductivity ◽  
Ph Values ◽  
North Of Iran ◽  
Set Up

Ramsar area is located across and between Alborze Mountain and Caspine Sea in North of Iran. About 30 spas are located south of the Ramsar and Sadatshar town. They are almost in between 20 to 70 m elevation. Paleozoic, Mesozoic and Tertiary rocks and alluvial deposit are exposed around the Ramsar area. In tertiary, acidic Plutonism was active and intrusion into the Paleozoic and Cenozoic formations. Quaternary and Alluvium deposits are exposed and extending on the Jurassic formations in Ramsar plain and have thickness lower than 10 m in show springs. The annual precipitation in the Ramsar region is 976 mm. There has not any proper Thermal spring management in Ramsar area yet. This could post some serious problem on improper management of Thermal spring sites, where its environment has been put into jeopardy. This study aims to provide a way to classify the Thermal springs in Ramsar area. The result of this study help in the classification of Thermal spring sites for official planning improvement of administration and sustainable development of natural resources of the area. The study makes use of the Department of Applied Geosciences in Islamic Azad University. GIS data of a total of 9 Thermal springs in the attempt to set up a classification system of Thermal springs in Ramsar area. These data include surface temperature, conductivity, alkalinity, acidity, TDS, pH values, H2S, Ca, Cl, Fe, K, Mg, Mn, Na, SiO2, SO4 contents, their locations, usages and other relevant information. The surface temperature of Thermal springs are between 19oC – 65oC and Na-K-Cageothermometer shows estimated reservoir temperature range from 25 o C – 195 o C. Most of the water from these Thermal springs is relatively turbidness and their composition is sodium choloride. The Thermal springs in this area generally exhibit high SiO2 and Na content; strong smell of sulfur. In addition, there are 9 Thermal springs that show high concentration of Cl, Ca, Na, K and Mg. There are three major criteria used in the classification system in this study, temperature, pH and their usage. On the basis of temperature, there are three classes of Thermal springs in Ramsar area: hyper thermal spring (10 %, 50-99o C); thermal spring (80%, 30-50o C). There is one class achieved on the basis of pH values: all of Thermal springs exhibit weak acids. There are 4 types of usage classification: swimming pools, Tourism, space heating and drying of organic materials.

I controlli sulla circolazione dei prodotti alimentari

2009 ◽  
pp. 129-136
Author(s):  
Teresa Babuscio
Keyword(s):  
Control System ◽  
Food Safety ◽  
Key Words ◽  
European Parliament ◽  
European Regulation ◽  
Safety Control ◽  
White Spaces ◽  
Food And Feed ◽  
Set Up

- Food controls are a key issue within the European food safety arena. Since 2002 the legislator is constantly improving the control system in order to better achieve the high safety principles contained in the European regulation n.178 and the network set up in it. Thus, the regulation n. 882/2004 is specifically dedicated to food safety controls: it is the main piece of legislation concerning this aspect as it has been adopted by the co-decisions procedure which involves the European Parliament and the Council. Despite that, it left some "white" spaces to be filled by the implementing measures adopted within the so called comitology procedure in which it is the Commission to act as a co-regulator. The latter is currently implementing art. 15.5. of the regulation n. 882/2004 to set up a system of increased controls for food and feed. Key words: food safety; control system; regulation n. 882/2004.

Tillage and crop residue effects on soil nitrate under three years of corn (Zeamays L.) on land previously in corn and forage crops

1999 ◽  
Vol 79 (1) ◽  
pp. 217-220 ◽  
Author(s):  
M. S. Burgess ◽  
G. R. Mehuys ◽  
C. A. Madramootoo
Keyword(s):  
Key Words ◽  
Crop Residue ◽  
Crop Residues ◽  
Conventional Tillage ◽  
Reduced Tillage ◽  
Soil Nitrate ◽  
Forage Crops ◽  
Corn Production ◽  
No Till ◽  
Key Words Nitrate

A 3-yr field study in Quebec assessed effects of tillage (no-till, reduced, or conventional) × crop residues (removed or retained) on soil nitrate under corn production. Fall nitrate levels were greatest in plots without residues 1 yr after treatments began, but not thereafter. No-till and conventional tillage had similar values, but sometimes differed from reduced tillage. Key words: Nitrate, corn, no-till, reduced tillage, conventional tillage, crop residues

A NOTE ON THE INFLUENCE OF INHERENT MUSCLE QUALITY ON COOKING LOSSES AND PALATABILITY ATTRIBUTES OF PORK LOIN CHOPS

1984 ◽  
Vol 64 (3) ◽  
pp. 773-775 ◽  
Author(s):  
L. E. JEREMIAH
Keyword(s):  
Key Words ◽  
Muscle Quality ◽  
Ph Values ◽  
Pork Loin

Loin chops from 60 pork carcasses were divided equally among three muscle quality groups (pale, soft, exudative; normal; dark, firm, dry), based upon 45-min and 24-h pH values and visual appearances of the ham and loin muscles. Palatability evaluations indicated only juiciness was significantly influenced by differences in muscle quality. Chops from DFD carcasses were rated more juicy than those from PSE carcasses. There were no significant differences in cooking losses among muscle quality groups. Key words: Pork, muscle quality, palatability, cooking losses

Coupling Flow-Reaction-Transmission during Square Column Leaching Processes

2013 ◽  
Vol 734-737 ◽  
pp. 698-702
Author(s):  
Jin Zhi Liu ◽  
Yu Hang Li ◽  
Bao Hua Yang
Keyword(s):  
Numerical Simulation ◽  
Hydraulic Conductivity ◽  
Leaching Rate ◽  
Analysis Software ◽  
Copper Ore ◽  
Column Leaching ◽  
Changing Trends ◽  
Copper Leaching ◽  
Leaching Experiment ◽  
Flow Reaction

This paper designs a square column leaching experiment to probe the coupling flow-reaction-transmission. 2.372 kg of Yanglas copper ore with a grade of 1.25% was loaded in a 6×6 cm2 column whose height is 60 cm. A 28-day leaching gave an approximate copper yield of 14.5 gram, which is an equivalence of copper leaching rate being 50%. Hydraulic conductivity was measured. The changing trends are analyzed by mathematical analysis software Eviews and Matlab, and the numerical simulation was conducted.

Evaluation of Sesoil, Przm and Pestan in a laboratory column leaching experiment

1986 ◽  
Vol 5 (10) ◽  
pp. 865-878 ◽  
Author(s):  
Susan M. Melancon ◽  
James E. Pollard ◽  
Stephen C. Hern
Keyword(s):  
Column Leaching ◽  
Leaching Experiment ◽  
Laboratory Column
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