النشر العلمي

  • Impact of Different Thicknesses of Evaporative Cooling Pads on Crop Yield in Greenhouse

ABSTRAC -----This study was conducted in Date Palm Technology Company, Khartoum North, Khartoum State.  To evaluate the effect of three thicknesses of evaporative cooling pads for greenhouses (celdek pads) as compared to the conditions outside the greenhouses (control), for pads. The evaluation effect includes environmental parameters (temperature and relative humidity at 10 am and 2 pm) and crop test parameters (length and stem diameter, leaves number and width, fruit length and diameter, fruit weight and yield). The results obtained for the temperature at 10 am showed that there was no significant difference (0.05) inside the greenhouses, while a high significant difference between the conditions inside and outside of the greenhouses was found. Significant differences were found at 2 pm between all treatments as compared to the conditions outside the greenhouses, and the results obtained for relative humidity showed high significant differences at 10 am and 2 pm inside the greenhouses and between inside and outside the greenhouse, respectively. On the other hand, the results obtained for crop parameters showed that there were significant differences between all parameters inside the greenhouses and outside the greenhouses; however, the greenhouses with 300 mm thicknesses of pads gave the highest yield and the greenhouses with 100mm of  pads gave the least and conditions outside gave the lowest.

published in International Journal of Agriculture Innovations and Research (IJAIR)

  • Performance evaluation of three different types of local evaporative cooling pads in greenhouses in Sudan

Abstract This study was conducted in Date Palm Technology Company Limited, Shambat, Khartoum
State. To evaluate performance of three types of evaporative cooling pads for greenhouses
(celdek pads, straw pads and sliced wood pads), as compared to the conditions outside the greenhouses
(control), for pads. Performance evaluation includes environmental parameters (temperature
and relative humidity at 8 am, 1 pm and 6 pm) and crop parameters (length and stem
diameter, leaves number and width, fruit length and diameter, fruit weight and dry matter and
yield). The results obtained for the temperature at 8 am showed that there was no significant difference
(0.05) inside the greenhouses, while a high significant difference between the conditions inside
and outside of the greenhouses was found. Significant differences were found at 1 pm and 6 pm
between all treatments as compared to the conditions outside the greenhouses, and the results
obtained for relative humidity showed high significant differences at 8 am and 1 pm inside the
greenhouses and between inside and outside the greenhouse, respectively, while there was no significant
difference at 6 pm inside the greenhouses and between inside and outside the greenhouses. On
the other hand, the results obtained for crop parameters showed that there were significant differences
between all parameters inside the greenhouses and outside the greenhouses; however, the
greenhouses with sliced wood pads gave the highest yield and the greenhouses with straw pads gave
the least and conditions outside gave the lowest

published in Saudi Journal of Biological Sciences

  • EFFECT OF FEEDING DIFFERENT LEVELS OF DECORTICATED SUN FLOWER CAKE (Abad Alshames) (Helianthus nnuus L.) ON PERFORMANCE OF SUDAN DESERT GOATS

ABSTRACT: This experiment was conducted to study the effects of replacing groundnut cake with sunflower cake in ruminants feed. The replacement was done at three levels, 0%, 15% and 25%, which were incorporated in three isocaloric, isonitrogenous diets A, B, and C, respectively. Nine male kids of Sudan desert goats at 3-4 months of age and average body weight 18.14 kg wee used in this experiment. The kids were randomly assigned to three treatments (3 animals each), then the animals in each treatment was subdivided into three groups of one animal (replicates). The study showed a significant difference (P<0.05) between treatments for average daily weight gain (ADG) and feed conversion rate (FCR), on the other hand, the study showed that there was no significant difference (P>0.05) between treatments for average feed intake, average final body weight gain and average of total gain. According to the results, sunflower cakes meal had no deleterious effects on ruminant’s performance; it may be used up to 25% in kids feeding with satisfactory results. Also sunflower cakes meal could be used for growing kids and fattening of mature goats.

published in Online Journal of Animal and Feed Research

  • Biological Assessment of Genetically Modified Food on Rabbit's Blood

The study was designed for assessment of genetically modified food (maize 96% and soybean 4%) on Rabbit's Blood. Six rabbits were assigned to individual cages in a room of 16x4x4 meter with a ceiling fan and a window for 30 days. They were divided equally into two groups A and B. Each Group contains three rabbits. Animals in group A were fed on a normal none genetically modified food (non GMF) Animals in group B were fed on genetically modified food (GMF). The study was showed insignificant differences (P>0.01) between control and GMF fed animals after thirty days in blood metabolites such as concentration of total protein, serum albumin, serum globulin, serum urea and hemoglobin concentration . While the blood sugar, PCV, and WBC was showed significant differences (P<0.01) between control and GMF fed animals after thirty days. These results were compared and discussed with the findings of similar studies conducted by other researchers.

published in الجمعية السعودية لعلوم الحياة القاء الثامن والعشرون

  • Reliability Modeling and Monte Carlo based Simulation for Optimal Wireless Sensor Networks Lifetime Assessment

Regarding the wide area of wireless sensor networks

(WSNs) applications during the recent years, the research challenges

such as lifetime optimization, reliability, maintainability

and resilience become very significant. The non-disjoint set covers

(NDSC) based coverage control approach with its capability of

sensors to be scheduled in one or more covers for one or more

monitoring seasons has brought out a better performance in

terms of the lifetime optimization. Also, it yields a promising

indicator regarding the WSNs reliability and resilience. This

paper addresses the WSNs reliability assessment via a NDSC

approaches applied for WSNs lifetime optimization. It specifies

the mathematical model for the WSNs lifetime considering the

energy reserve and the failure hazard. Then, it introduces a

dynamic simulation method based on NDSC, using the Monte

Carlo method for the WSNs reliability assessment. For a WSN

with m sensors participating in q NDSC scheduled for a given

number of sensing periods, our method could estimate the reliable

and predict the WSNs lifetime, considering the expected failure

hazards on a given time horizon corresponding to the number

of monitoring seasons. We have considered that a WSN with

a number of NDSC equal to q has the capability to perform

the coverage task while q is greater than zero and reserve

covers are available to be activated if the current cover fails.

An experimental study by simulation using C programming

language allows explaining the failure probability effects. For

a given instance, the maximum lifetime decreases to 18.74 %

when the failure probability increases from 0.0001 to 0.1. The

investigations have shown the faulty covers recovery capability

enabling to design resilient strategies using the NDSC in future

works.

published in The 1st International Conference on Engineering, Applied Sciences and System Modeling (ICEASSM)

© 2016 University Of Gezira. All rights reserved | Design by Informatics Administration