scholarly journals Assessment of Quality Status of Zinc Sulfate (hepta hydrate) Fertilizers Available in the Markets of Jessore Sadar Upazila

2015 ◽  
Vol 8 (1) ◽  
pp. 69-71
Author(s):  
GMM Islam ◽  
M Hossain ◽  
SMA Iqbal ◽  
MRA Mollah
Keyword(s):  
Natural Resources ◽  
Zinc Sulfate ◽  
Zinc Content ◽  
The Other ◽  
Soil Science ◽  
Sulfate Heptahydrate ◽  
Nutrient Value ◽  
Zn Content ◽  
Composite Samples ◽  
Quality Status

An experiment was conducted in the Department of Soil Science, Bangladesh Agricultural University, Mymensingh during January to December, 2012 to see the quality status of Zinc Sulfate (hepta hydrate) fertilizers available in the markets of Jessore sadar upazila. For this purposes Zinc Sulfate (hepta hydrate) fertilizer samples were randomly collected from all union of the upazila. Fifteen unions and a pourashava in this upazila were included the experiment. Three composite samples were collected from each of the unions. Therefore, 48 composite samples were ready for 16 unions including pourashava. In this study 79% Zinc Sulfate (heptahydrate) fertilizer was adulterated and 21% was qualified according to government specification. 40% of them were ten to fifty percent of required Zn content and 2% of them were same level of S content. Only 21% of total fertilizers contained hundred percent of required Zn. Whereas, 96% fertilizers contained the same level of required S and only four percent of the fertilizers was found as sulfur deficient. The highest nutrient value of S and Zn were 17.75% and 23.03% respectively. On the other hand, the lowest value of them was 5.2% and 1.30%. Further 27% of them contained above eighty percent of required Zn. No unique relation between sulfur and zinc content of those fertilizers was found.J. Environ. Sci. & Natural Resources, 8(1): 69-71 2015

The Challenges of Implementing E-Commerce in Kurdistan of Iraq

2016 ◽  
Vol 2 (3) ◽  
pp. 528
Author(s):  
Ako Abubakr Jaffar ◽  
Mazen Ismaeel Ghareb ◽  
Karzan Hussein Sharif
Keyword(s):  
Middle East ◽  
Natural Resources ◽  
Online Shopping ◽  
Deep Understanding ◽  
The Other ◽  
Regional Government ◽  
Security Measures ◽  
Unique Region ◽  
Government Organizations ◽  
The World

The Retailers all over the world are prospering from the burgeoning trend of online shopping. Kurdistan Regional Government is still struggling to grow its e-commerce markets. On the other hands e-commerce in Various countries in the Middle East have some of the world’s highest internet and mobile penetration rates. Alternative payments methods are quickly expanding, and having access to some of the world’s most coveted natural resources that allows countries in their region to have some of the highest GDP in the world. There are several challenges prevalent in the KRG Region market that will require international merchants to develop strategies based on innovation and vigilance. This unique region is plagued with complications many other countries have little to no experience with e-commerce, which highlights the need for retailers to have a deep understanding as to how this region operates before they can begin finding solutions. One of the biggest concerns today's consumers have is the risk of fraud when they are shopping online. With highly sophisticated malware and perceptive cybercriminals, customers' card and bank information can easily be stolen if a merchant does not take the proper security measures. In this paper we summarize all challenges need to be addressed in KRG in order to make correct steps to apply e-commerce in KRG. Finally, the recommendations and framework are proposed for e-commerce to encourage government, organizations, and people to take advantages from e-commerce.

scholarly journals Effect of Different Plucking Systems on Yield and Root Starch Reserve in Two Cultivars of Tea (Camellia sinensis L.)

2017 ◽  
Vol 9 (2) ◽  
pp. 91-95
Author(s):  
T Ahmed ◽  
WAJM De Costa ◽  
MA Wijeratne
Keyword(s):  
Natural Resources ◽  
Camellia Sinensis ◽  
The Other ◽  
Drought Tolerant ◽  
Root Starch ◽  
One Year

A study was carried out to monitor the effect of different plucking systems on root starch reserve and yield of tea in two cultivars (drought tolerant TRI2025 and moderately drought tolerant TRI2026). Depending on the severity of plucking, four plucking systems were used as treatments namely, mother-leaf plucking, fish-leaf plucking, janam-leaf plucking and estate practice. The cultivar TRI2026 showed significantly higher yield than the drought tolerant cultivar TRI2025. Estate practice produced greater yield in TRI2025 than the other treatments, while in TRI2026 the highest yield was found in fish-leaf plucking system. Although cultivars had no significant effect on root starch reserves, however significantly different found in treatments. About one year after commencing the experiment, for both cultivars higher root starch observed under mother-leaf plucking and the lowest was in janam-leaf plucking.J. Environ. Sci. & Natural Resources, 9(2): 91-95 2016

scholarly journals Crab Fattening in Bangladesh: A Socio-economic Perspective

2015 ◽  
Vol 6 (1) ◽  
pp. 145-152 ◽  
Author(s):  
Z Ferdoushi
Keyword(s):  
Young People ◽  
Natural Resources ◽  
Economic Condition ◽  
Coastal Region ◽  
The Other ◽  
Small Scale ◽  
Mud Crab ◽  
Economic Perspective ◽  
Negative Perception ◽  
Southwest Part

Thestudy was conducted to assess the socio-economic condition of the crab fatteners in the southwest part of Bangladesh.About 52% farmers have an experience of 5 to 10 yearsof indicating that involvement in mud crab fattening is the recent development and innovation in those areas.The Hindus in the coastal region found to have more interest in crab farming. On the other hand, about 27% Muslim were also found to involve in this farming.Comparativelyhigher involvements of Hindus farmers were found in Khulna region. Mostly young people found to have more involvement ranging from 26 to 35 years old which constituted more than 38% of the total interviewed population. About 40% farmers showedhigher satisfaction bycrab fattening while,fewfarmers reported some negative perception. Most of their farmingwere small scale and the farmers also accounted the higher seed cost with low profitability. However, well developedco-operation and partnershipbetween farmers, fishermen, middlemen and wholesaler can also improve this sector for sustainable development.DOI: http://dx.doi.org/10.3329/jesnr.v6i1.22056 J. Environ. Sci. & Natural Resources, 6(1): 145-152 2013

Investment of Steel Reinforcement Extracted from Destroyed Buildings in Iraq

2020 ◽  
Vol 897 ◽  
pp. 166-172
Author(s):  
Zahraa Ali Jalil ◽  
Hafeth I. Naji ◽  
Mohammed Mahmood
Keyword(s):  
Natural Resources ◽  
Building Materials ◽  
Negative Impact ◽  
Steel Reinforcement ◽  
The Other ◽  
Effective Management ◽  
Building Information Modelling ◽  
Building Information ◽  
Management Method ◽  
The One

The number of destroyed cities in Iraq has increased significantly over the last five years. It presents a negative impact on the country's economy on the one hand and on the environment on the other. Reconstruction of these cities requires substantial capital to provide building materials needed for reconstruction and this leads to depletion of natural resources. This paper aims at finding an effective management method that contributes to the investment of the remnants of the components of destroyed buildings, including reinforcing steel, using the building information modelling (BIM) technique. The results showed that the amount of steel reinforcement that can be obtained from the destroyed buildings is enormous. Therefore, these quantities must be addressed through reusing or recycling. The sale of these quantities as recycling materials can provide a large income which can be added to the capital of the project.

Influences of Zinc Content and Solution Heat Treatment on Microstructure and Corrosion Behavior of Mg-Zn Binary Alloys

CORROSION ◽  
10.5006/3672 ◽  
2020 ◽  
Author(s):  
Dinh Pham ◽  
Sachiko Hiromoto ◽  
Equo Kobayashi
Keyword(s):  
Heat Treatment ◽  
Corrosion Resistance ◽  
Corrosion Rate ◽  
Corrosion Behavior ◽  
Volume Fraction ◽  
Galvanic Corrosion ◽  
Zinc Content ◽  
Eutectic Cell ◽  
Zn Content ◽  
Cast Alloys

The influences of Zn content and heat treatment on microstructure and corrosion behavior of Mg-xZn (x=1, 3, 5 and 7 wt.%) alloys were studied. (α-Mg + MgZn) eutectic cells and Zn-segregated regions were formed in the as-cast alloys. The Zn-rich phases acted as micro-cathodes in galvanic corrosion. Volume fraction of the Zn-rich phases increased with Zn content of the as-cast alloys, leading to a decrease in corrosion resistance. The corrosion rate of the as-cast alloys increased by 4 times with an increase of the volume fraction of eutectic cell from 0.07 vol.% of Mg-1Zn alloy to 2.18 vol.% of Mg-5Zn alloy. The corrosion rate of Mg-7Zn alloy with 2.87 vol% eutectic cells was 2 times higher than that of Mg-5Zn alloy. The Zn-rich phases dissolved by the T4 treatment and only the T4-treated Mg-7Zn alloy obviously showed eutectic cells of 1.73 vol.%. The polarization resistance (Rp) of the T4-treated Mg-1, 3 and 5Zn alloys was 2-10 times higher than that of the as-cast alloys. The T4-treated Mg-7Zn showed similar Rp to the as-cast Mg-5Zn alloy. Consequently, the volume fraction of Zn-rich phases dominated the corrosion resistance of Mg-xZn alloys.

Excellence Is by No Means Enough

2019 ◽  
Vol 25 (1-3) ◽  
pp. 259-270
Author(s):  
Stanley N. Katz
Keyword(s):  
Natural Resources ◽  
The Other ◽  
Internal Governance ◽  
Special Obligation ◽  
Definition Of ◽  
The University ◽  
Do So ◽  
The Way

This essay asks the question “What would it mean to be a just university?” and answers to that the question may be understood in two ways. One way to understand “just” is procedural, having to do with internal governance and ensuring that a university’s policies are themselves just. The other is substantive, having to do with the university’s purpose or reason for existing. The second assumes the university is to serve some function necessary for the general good. This good is often defined in material terms: fostering a stronger economy, medical breakthroughs, more efficient use of natural resources, and so on. But such a view of the university defines its value entirely by factors external to itself. Proponents of one definition of the university’s purpose typically acknowledge some validity in the other, and universities commonly strive to fulfill the claims of both definitions. But universities also have an obligation to teach the young and to do so within the context of a common set of values that both determines the setting in which teaching takes place and encourages students to develop values that will shape their own lives. Katz argues in particular that intellectuals have a special obligation to work cooperatively to eliminate intellectual obstacles that stand in the way of commensuration, communication, and comprehension globally. It is this responsibility that he calls “intellectual philanthropy.”

A Primary Study of Torch Brazing Pure Aluminum with Al-Si-Ge-Zn Solders

2015 ◽  
Vol 751 ◽  
pp. 61-65
Author(s):  
Zhi Wei Niu ◽  
Ji Hua Huang ◽  
Hao Yang ◽  
Shu Hai Chen ◽  
Qi Wang ◽  
...  
Keyword(s):  
Liquidus Temperature ◽  
Filler Metal ◽  
Pure Aluminum ◽  
Zinc Content ◽  
Primary Study ◽  
Control Temperature ◽  
Melting Characteristic ◽  
Zn Content ◽  
Wetting Property ◽  
Brazed Joints

Based on the difficulty to accurately control temperature for torch brazing, the study is concerned with developing low-melting-point solders for brazing pure aluminum. For this purpose, Ge and Zn have been chosen to be added to Al-Si-based alloy. The melting characteristic, wetting property of solders with Al and mechanical property of the brazed joints were investigated. The results show that the addition of 10 wt. % germanium into the traditional Al-12Si (wt. %) filler metal causes its liquidus temperature to decrease by about 23 °C. An addition of 30 % zinc into such Al-Si-Ge ternary alloy will cause its liquidus temperature to drop further to 525 °C. The solders have good wettability with Al. With the increase of Zn content in the alloys, the spreading areas of solders exhibit nonlinear decrease, and there exist a very large value at the zinc content of 15%. When Al-Si-10Ge-30Zn solder was used to braze the pure aluminum, an optimized bonding strength of 116 MPa was achieved.

Public Finance and Development in Colombia

1966 ◽  
Vol 8 (1) ◽  
pp. 11-33
Author(s):  
Milton C. Taylor ◽  
Raymond L. Richman
Keyword(s):  
Public Finance ◽  
Latin America ◽  
The Netherlands ◽  
Natural Resources ◽  
Capita Income ◽  
The Other ◽  
Per Capita Income ◽  
Land Area ◽  
High Culture ◽  
Per Capita

Colombia is a country of paradoxes. Because of the high culture of its ruling classes, Bogotá is called the “Athens of Latin America,” yet over one-third of the population is illiterate. The country is unusually well-endowed with natural resources, has a relatively large land area and a population of 15.6 million, but the per capita income is only the eighth highest in Latin America. Colombia is relatively underpopulated, with the same population as the Netherlands and 35 times its area, but there are millions of landless campesinos. Living in Bogotá, and walking the paths of the wealthy, it is difficult for a foreigner (and also for many Bogotanians) to believe that most Colombians are desperately poor. This is because Bogotá and the other main cities are like islands in a sea of poverty.

scholarly journals Constitutional protection of the environment with particular regard to the Hungarian, German, Italian and Belgian constitutional regulation

2021 ◽  
Vol 16 (31) ◽  
pp. 99-120
Author(s):  
Flóra Orosz ◽  
Noémi Suri ◽  
Renáta Hrecska-Kovács ◽  
Péter Szőke
Keyword(s):  
Sustainable Development ◽  
Natural Resources ◽  
Environmental Protection ◽  
The Other ◽  
Future Generations ◽  
Constitutional Protection ◽  
Other Hand ◽  
The World ◽  
Fundamental Law

Environmental protection has become a burning issue which plays a more and more important role in the world. The aim of this study is to give a picture of the constitutional regulation of environmental protection which is the highest legal source of a nation. Besides the Hungarian Fundamental Law, the German, Italian and Belgian constitutions were examined in the study. On one hand, we looked into how environment is regulated in the constitutions, as a right (right to environment) or a state task or objective (protect the environment). On the other hand, we analysed how related regulatory subjects appear in the constitutions, such as natural resources, future generations and sustainable development.

scholarly journals Development and Validation of Method for the Quantitative Determination of Zinc in its Chelate Complexes Using Energy Dispersive X-ray Fluorescence Spectroscopy

2021 ◽  
Vol 10 (4) ◽  
pp. 154-161
Author(s):  
А. V. Marukhlenko ◽  
Т. V. Maksimova ◽  
Т. V. Pleteneva ◽  
М. A. Morozova
Keyword(s):  
Fluorescence Spectroscopy ◽  
Aqueous Solutions ◽  
Quantitative Determination ◽  
Zinc Sulfate ◽  
Zinc Content ◽  
Chelate Complex ◽  
Molar Ratio ◽  
X Ray ◽  
Validation Parameters

Introduction. The production, standardization and quality control process of various dietary supplements containing chelated zinc requires validated quantitative assessment methods. In this work, we propose an X-ray fluorescence spectroscopy (XRF) technique for determining the zinc content in the composition of coordination compounds using the example of a synthesized chelate complex with methionine.Aim. To synthesize Zn(Met)2 chelate complex, to develop and validate a method for its quantitative analysis using the XRF method.Materials and methods. The synthesized zinc chelate complex was investigated by IR spectroscopy. The XRF method was used to develop a method for quantifying the zinc content in the synthesized complex. We used dry mixtures of zinc sulfate monohydrate and L-methionine (Met) in a molar ratio of Zn to Met – 1 : 1, 1 : 2, 1 : 4, 1 : 8 and 1 : 16 and also aqueous solutions of zinc sulfate and L-methionine in a molar ratio of Zn to Met 1 : 2 with Zn concentrations from 0.5 to 100 mmol/l as calibration standards. Complexometric titration was used as an arbitration method for the quantitative determination of zinc content in the samples under study.Results and discussion. The IR spectrum of chelate complex confirmed the presence of a donor-acceptor bond between Zn2+ and the nitrogen atom of amino group in methionine. The titration results showed chelate compounds have a composition corresponding to the stoichiometric formula Zn(Met)2. XRF analysis of dry standard mixed samples demonstrated the presence of matrix effect, that makes impossible an accurate assessment of zinc content in the chelate compound. According to the XRF spectra of aqueous solutions containing zinc sulfate and methionine in a ratio of 1 : 2 at a zinc concentration of 0.5; 1; 2; 3; 4; 5; 10; 25; 50 and 100 mmol/L, a calibration graph was constructed – the dependence of the fluorescence signal intensity for the Kα line of zinc on the concentration of zinc in the solution (r = 0.9996). The method was evaluated by the following validation parameters: specificity, linearity, correctness, precision, and analytical range. The specificity of the validated method was proven in the presence of copper, iron, and silver.Conclusion. The developed method make it possible to determine with sufficient precision and correctness the content of Zn2+ in its aqueous solutions of inorganic and organic nature by the XRF method in the concentration range from 3 to 100 mmol/l without the influence of the matrix.

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