Modeling and Assessment of Rey's Groundwater Quality
Majid Ehteshami*
Ali Sharifi*
*Faculty of Environment,
Key words: modeling, groundwater, contamination,
The City
of
In this study,
nitrate is considered as the best index showing the groundwater contamination, especially
due to the anthropogenic activities in the area. In studying the nitrate
contamination of the groundwater, there were several problems such as the lack
of proper data and the vastness of the case-study area.
This study
focuses on contamination sources, saturated zones, and the quantity of nitrate
discharged into the groundwater .The groundwater concentration in central and
eastern parts of the city is 65 ppm.
The
mathematical model (MT3D) makes it possible to predict the groundwater quality.
The simulation results show that the concentration of nitrate will increase in the
central and eastern regions, but a sewage collection network can reduce the
concentration of nitrate by 30 ppm.
The Quality
and Quantity of Municipal Soild Waste and Its Feasibility to Be Recycled in
Ghassem Ali Omrani
Afshin Maleki
Faculty of Health,
Ali Sharafat Mola
Recycling Organization,
Key words: recycling, solid waste, compost, physical
and chemical quality
Abstract
Recycling is one the widely used alternatives
in the solid waste management system. For recycling plans, recognizing the quality
and the quantity of the solid waste is quite necessary. All over the world,
especially in the developed countries, a lot has been done in this regard. But in
For the first time, this study was implemented
in 2003 for all provinces including Sistan and
Baloochestan. Three cities of Zahedan,
Iranshahr and Chabahar were chosen for study. Sampling and examinations were
done according to the standard methods obtained from governmental agencies and the
related literature.
The results show that every person
produces 504 g solid waste per day with the moisture and density of 25.5% and
182.8 kg/m3, respectively. Solid waste consists of 53% garbage. C/N
ratio, 22, makes it suitable for composting. Other important constituents are
plastic and paper
with 10.8% and 10.5%, respectively.
Numerical Models Predicting Oil Spills Movement
in the
Shahla Habibi
Faculty of Energy and Environment,
Science and Research Branch, Islamic
Masood Torabi
Faculty of Energy and Environment,
Ali Akbar Bidokhti
Geophysics Institute,
Key
words: numerical model, governing equation, oil slick, Persian Gulf,
Abstract
This
study considers oil trajectory and fate models in the Persian Gulf, which have
been studied in
Based
on studies, an ideal two-dimensional trajectory and fate model simulates the
movement of the oil slick. The characteristic of an ideal three-dimensional oil
fate model simulates the distribution of oil particle concentration in the
water column. This model is proposed for the prediction of oil spill movement in
the
Determining
Using Air Quality Index (AQI)
Soheil Sobhan Ardakani
Faculty of Natural
Resources,
Abbas Esmaili Sari
Faculty of Natural
Resources and Marine Sciences,
Mehrdad Cheraghi
Hamedan Branch, Islamic
Department of Environment,
Mahmood Ghasempouri
Faculty of Natural
Resources and Marine Sciences,
Key words: healthy air, Air Quality Index, Pollutant Standard
Index, Air Pollution Index.
Abstract
Today, the numerous consequences of air
pollution, especially those related to peoples health such as respiratory, heart
and nervous system diseases, have made the monitoring and control of air
quality an unavoidable issue and the main concern in all societies.
In this study, due to the fact that
The Air Quality Index showed that 262 days
in the year under study, air pollution had been more than the accepted standard
level (i.e., AQI = 100). In 12 percent of the days, the air quality was rated
as unhealthy and in 5 percent of the days as hazardous, with carbon monoxide as
the cause of pollution in 83% of the cases. It should also be mentioned that
the three months of August, September and October of 2004 were the most
polluted with average indices of 190, 185, and 188 on the AQI scale.
Comparing the results of this study with the
results of the studies done in the previous years, it can be concluded that
Environmental Impacts of the Exhaust Fumes Released in
Underground Tunnels of
Mohammad Javad Jafari
Faculty of Health,
Farideh Atabi
Faculty of Energy and Environment, Science and Research Branch, Islamic
Mohammad Khorram
Key
words: subway, air pollution, carbon
monoxide, ventilation, air velocity, relative humidity, environmental.
Abstract
Due to the modern life and human activities,
air pollution has now become a main concern in
In this study, the environmental impacts of
4 inter-station ventilation systems in the northern half of line one of
The results show that the average carbon
monoxide concentration level at the subway stations are 30% to 40% lower than
the average carbon monoxide concentration levels measured by environmental
monitoring stations located close to the subway stations.
The average carbon monoxide concentration
levels measured at the subway stations are less than clean air criterion (.9ppm)
and the average daily temperature of air exiting from ventilation stations is 21-27
degrees centigrade. This is 10 degrees lower than the average daily air
temperature in
The average daily relative humidity of air
exiting from ventilation stations is 40-50 % mainly due to the nonstop and
proper operation of the subway ventilation system. This is 15 % more than the average
daily relative humidity of
The results also show that the air velocity
at the ventilation systems is independent of the citys air velocity changes.
This study shows that the ventilation system
of
Determining the LC50 of Cobalt Chloride of
Cyprinus carpio
Tahereh Naji
Faculty of Pharmacy, Islamic
Shahrbanoo Oryan
Faculty of Science,
Sara Karami
Faculty of Enrgy and Environment, Science and Research Branch, Islamic
Keywords: cobalt chloride, Cyprinus carpio , LC50
Abstract
In this study,
the acute toxicity of the heavy metal of cobalt on Cyprinus carpio was
determined in the laboratory of the Science and Research Branch, Islamic Azad University, in 1384.
The experimental
investigation took 96 hours using the O. E. C. D. guidelines. Fishes were
divided randomly into eight groups of ten fishes each. The average length and
weight of the fishes were 91.5cm and 10.125 2.19 gr, respectively.
A group
was chosen as the control group and seven groups were placed under
concentrations of 50, 100, 200, 300, 400, 500, and 600 mg/Lit
cobalt. All important physicochemical parameters of water including pH,
dissolved oxygen, hardness, temperature, and conductivity, total alkalinity, phosphate,
nitrate and nitrite were measured. All the examinations were done with two
replicants.The data were analized using probit analysis with software spss .
The 96h LC50 values of cobalt chloride for Cyprinus carpio
with two replicants were values of 328 and 327 mg/Lit,. respectively.
Jafar Seyfabadi*
Abdolhamid Abediyan*
*Faculty of Natural
Resources & Marine Sciences,
Nasser Agh**
Key
words: Artemia urmiana, temperature,
hatchability, nutritional value
In
this study, hatchability and nutritional value of Artemia urmianas
Nauplii, and the effects of temperature on these factors were evaluated. The
experiments were conducted factorially with two levels of temperatures (25 and
30˚c ) in triplicate random groups. Hatchability of cysts at these
temperatures were determined. To determine the biochemical composition of their
body, Naupliies were hatched in five-liter
bottles and harvested after 24 hours. Dry weight, protein, lipid, carbohydrate,
ash, caloric content, and fatty acid compositions of Naupliis were determined at
these two temperatures. The individual dry weight and the individual
biochemical composition of Nauplii were also determined.
The results showed that the hatching
percentage and hatching efficiency increased with an increase in both
temperature and time. For the hatching percentage, the increase was significant
(p<0.05). The nutritional value of Naupliies decreased slightly at higher
temperatures in most cases, but the change was not found significant (p>0.05).
Based
on the results of the study, a temperature of 30˚c is recommended
for cysts hatching; at such a temperature, not only hatchability increases,
but the nutritional value is also preserved.
The Study of Cadmium, Zinc, Cupper,
Iron and Nickel Concentration in
Some Products of the Neighboring
Farms
Farshid Kafilzadeh
Mohammad Kargar
Elham Kadivar
Dept. of Microbiology, Islamic
Key words: pollution, heavy
metals,
Abstract
To examine
the quality of the river's water and the pollution caused by heavy metals
(Cadmium, Zinc, Copper, Iron and Nickel), six stations were established and
samples were taken from the water in 2005. Also, in the spring of 2005, some
samples were taken from the products of the nearby farms and the rate of heavy
metals found in them was measured.
The
average concentration of heavy metals in the river's water was compared with
the maximum allowable figures for drinking water, surface waters, irrigation, and
aquatic creatures, using a t-student test (with a confidence level of 95%).
The
results showed that the water in station one (Moali Abad bridge) lacks heavy
metals and is completely safe for any use. However, the water in the stations two
(Namazi bridge), three (Parking bridge), four (Salman bridge), and five (Sharif
Abad bridge) is not suitable for drinking, irrigation, and aquatic creatures, but
it is safe as surface water. The water in station six (end of Kharchool) is not
suitable for drinking and aquatic creatures, but it can be used for irrigation
and is also safe as surface water.
Regarding the
farming products, it can be said that some of them contain heavy metals but only
the rate of copper in all the plants and iron in only one case was more than
the maximum allowable figures.
Hazards Identification and Assessment in a Production Factory
Using Job Safety Analysis (JSA)
Parvin Nasiri*
Seyyed Shamseddin Alizadeh*
Farideh Golbabaee*
Seyyed Jamaleddin Shahtaheri*
*Department of Occupational Health,
Key words: JSA, hazard identification, risk assessment.
Abstract
Occupational injuries and
fatalities occur every day in workplaces. They often occur because employees
are not trained on the proper job procedures. JSA, a consistent and systematic
approach, can help identify and assess risks associated with hazardous job and develop
control measures.
In this approach, jobs are broken
down into theirs steps, potential hazards associated with each step are
identified and assessed, and then proper control measures are recommended. This
research was conducted in a production factory where 45 hazards were identified
and assessed through JSA, of which 14 were high-risk, 28 moderate-risk and 3
low-risk hazards.
To remove or reduce the risks,
certain control measures are recommended, among which training the workers and
supervising their performance continuously are the most important ones.
The Study of Environmental Issues of
the New Town
Of Pardis and the
Presentation of Managerial Approaches
Nasser Moharamnejad
Faculty of Environment and
Energy, Science and Research Branch,
Islamic
E-mail: [email protected]
Mohsen Malvandi
Faculty of Environment and
Energy, Science and Research Branch,
Islamic
Key words: new town, environmental pollution,
environmental, managerial
Abstract
Due to the absence
of environmental assessment and the long and simultaneous construction and
settlement activities of this town, the inhabitants confronted many
difficulties including the following:
In this study, in
addition to investigating the existing environmental conditions, some management
approaches are presented which can help remove the difficulties and prevent them
in future.