A pilot unit was constructed and operated to study the ability of treating polluted water
using biological treatment. The experimental unit consists of water sprayer unit that ensure
wetting of the filtered media and distributing water in a homogen
ous manner as well as
increasing the dissolved oxygen concentration in water. The sprayer unit is followed by a
biological filter; the area of the filtered media was (13) m2. The developed biological film
placed on the filtered media will dismantle the organic matter, which reduce nitrates to
nitrite then to a nitrogen gas. The filter was connected to an aeration basin where the
suspended growth was archived. The pilot unit was operated depending on the water was
taking from a manhole nearby the residential unit number 18. The average efficiency of
BOD5 removing was 69.4% and of nitrate, removing was 34%. The results showed that
this system can improve water's characteristics.
this paper presents a solution of non-linear viscoelastic bar systems transversal vibrations
problems in presence of biological factor. Governing differential equations were built, then
analytical expressions of the solution of this equations were found, which describe
transversal vibrations of a thin finite length bar
The study was conducted in 2016. The samples of rice Oryza sativa L. straw
were collected from Dewania governorate/Iraq, and were brought to laboratory of
Directorate of Environmental and Water in Ministry of Science and Technology.
The samples we
re cleaned and milled, then stored in sterile containers. Local
cellulolytic bacterial isolate was cultivated and isolated on mineral and cellulose
medium, at 37 ºC for (24± 2) hours, the bacterial isolate was diagnosed as Bacillus sp.
depending on phenotypes of bacterial colonies on solid medium, microscopic
characters and some biochemical tests. Milled rice straw was chemically treated
with 1% of sodium hydroxide, then biological treatment by bacterial isolate Bacillus sp
cultivate in mineral medium with alkali treated rice straw as carbone source and
compared with cellulose standard medium. The bacterial growth was measured at
600 nm, which reached 0.974 in rice straw medium, while in cellulose medium
reached 0.853. For glucose concentration, the value reached 250 μg/ml in rice straw
medium, while in cellulose medium it was 210 μg/ml. The results concluded the
possibility of getting rid of rice husks, which is an environmental contaminant, and
to use it in the production of glucose.
The research was carried out during 2015 and 2016 seasons at Arab El-Mulk village,
Banias district, in Tartous Governorate, to study the effect of planting peanut seeds
size (mixture, small, medium and large), and spraying plants with bread yeast
(Saccaromyces serevisiae) concentration of (4%) in three treatments (control, once
and twice), on biological yield (BY), Economic yield (EY) and some physiological
indicators; yield index (YI), Harvest index (HI), crop index (CI) and seed index
(SI). The experiment design was set as split plot in a randomized complete block
with four replications. The seeds size considered the main factor, while spraying
yeast allocated the sub plots. The results showed that seed size caused significant
increases in all of the studied indicators. The large seeds gave better values of (BY)
210 g, (HI) 30.56%, (CI) 44.12%, (SI) 74.85 g, except (EY) compared with mix,
small and med seeds. Also the results showed that there were no significant increase
between mixture and medium seed size in (YE) and (HI), but there was a significant
increase in (BY) and (SI), on the other hand the treatments; spray yeast for once and
twice had significant increases compared to the control, and the twice yeast spraying
gave better values (215.22 g ,63.98 g, 29.64%, 42.37 % and 73.45g ) of (BY , EY
,HI, CI and SI) respectively, compared to the control. The interaction between seeds
size and bread yeast spraying caused a significant increase which achieved 15.78 %
in (BY), 23.99 % in (EY), 9.74 in (HI), 13.68% in (CY) and 7.87g in (SI) compared
to the interaction between untreated treatment and small seeds size.
The research was conducted to study an efficacy of the fungus
Trichoderma harzianumin controlling the gray mold disease on
tomato that causing by the fungus Botrytis cinerea. A local isolate
of the fungus T. harzianum was studied under laboratory conditions
using two methods: antagonism and the spore suspension.
This research was carried out during 2014 - 2015 in Scientific Centre for Agricultural
Researches. This research aims to determine the effect of some biological and genetic
indicators on the success of Carob seedlings in nurseries by studying three
kinds of
grafting: Auto-grafting, Homo-grafting and Hetero-grafting. Rootstock aged one year and
resulted by two chosen genetic types, namely, SnobarJablah and Alhafa were used. Scions,
they were taken either from seedlings with age of one year resulted by these two types or
from branches aged one year from the selected two types as well. Grafting was conducted
by using Whip Graft way in spring.
Auto-grafting has indicated the importance and the role of biological and genetic
factors for grafts and their impact on rates of grafting success. Concerning rates of success,
the results have shown that Auto-grafting surpassed Hetero-grafting with a significant
reference for both of two genetic types, regardless if the used scion was young or old.
In addition, Auto-grafting has shown surpass on other kinds of grafting, in terms of
subsequent growth of scions. On the other hand, a variety in biological indicators values
has been noticed between the two genetic studied types. In favour of SnobarJablahtype
againstAlhafaʼs type. However, the differences of values were not significant for the most
of conducted measures.
As for the age of scions, the results have pointed out that values of Hetero-grafting
with young scions surpassed values of Hetero-grafting with old scions in terms of the rate
of grafting success and values of biological studied indicators.
In developing countries, including Syria solid waste sector contributes to the
emission of greenhouse gases, mainly methane, due to the lack of methods of integrated
management of solid waste in these countries.
The objective of this research is t
o study the feasibility and effectiveness of
mechanical biological treatment of municipal solid waste in a way to reduce methane gas
emissions compared to the way the indiscriminate dumping of municipal solid waste. In
order to reach this goal is the use of the formula contained in the guidelines of the
International Panel on Climate Change (IPCC) in account the emissions of methane from
municipal solid waste sector in the Syrian Tartous in the case of landfilling of municipal
solid waste generated by the province during the years from 2010 until 2015 in random
landfills. In order to compare the account is an assumption that the same amount of
municipal solid waste generated by the province during the years from 2010 to 2015 have
been treated in accordance with the mechanical biological treatment method. It was also
calculate the amount of methane emitted from municipal solid waste entering the
integrated waste treatment center in the Province of Tartous within one year from the
beginning of June 2014 until the end of May 2015, using mechanical biological treatment
method.
This study concluded that the mechanical biological treatment for municipal solid
waste significantly reduces the amount of methane emissions from solid waste sector
compared to the landfill, where the percentage of reduction in the emission of methane
93%.
This research was conducted in Alkallouf village in Lattakia Province on grapevine trees belonging to local varieties Shami Abiad (Local) and Tuffahi in Vitis vinifera L. species grown on 10 years Arbor training grafted on B41 rootstock and planted i
n 3x3m during 2013 and 2014. And results were as follows:
The best fertility of winter eyes in Tuffahi Local variety were between 0.11 and 1.37 as an average. The tenth eye on a stock has achieved the highest economical fertility (1141.25 g) as a main for 2013 and 2014, and was significantly better than other winter eyes.
The best fertility of winter eyes in Tuffahi Local variety was tenth eye which achieved (1.24) during 2013 and 2014, were fertility was less on first eye (0.33). An eye number ten was significantly better than other winter eyes except an eye number nine which achieved (1.13) fertility.
An eye number ten has achieved the best economical fertility (the main weight of cluster 2137.75 g in two years study) followed by an eye number nine (1338.05 g). An eye number ten was significantly better than other studied winter eyes.
The goal of the presented research in this paper is finding a unified way to solve cross vibration problems in nonlinear elastic fields with a biological factor. We obtained the equations of cross vibration for elastic systems by using known mathemat
ical models, and then we solved the nonlinear cross harmonic vibration problem for a finite length of effective bar.
This research deels for the first time the studying fecundity of species blue crab
Portunus pelagicus in our regional waters which as an introduction to breeding and culture.
This research carried out in the period from September 2011 until January
2013.
At the following three region of Lattakia coast : Fishing bort and picnic area, Ibn
Hanni area and Southern Corniche area.Biomonthly samples were collected from Littoral
and Sublittoral area of 8-18m deeps.
Studies results revealed as the following:
The number of mature females 240 female, Ranged: carapace length 4.6-7.9cm
Carapace width between 5.2-13.8cm and body weight between 49.2-171.45 g .
Spawning takes plase during the period from May until December and the rate of the
highest in the month of October.
Absolute fecundity in females of this species was ranged between 21435-143510
eggs, and relative fecundity was ranged between 1924-766651 eggs/g, and the eggs
diameters ranged between 0.25-0.45 mm.
