An optimum location of on-grid bifacial based photovoltaic system in Iraq

Bifacial photovoltaic (PV) module can gain 30% more energy compared to monofacial if a suitable location were chosen. Iraq (a Middle East country) has a variable irradiation level according to its geographic coordinates, thus, the performance of PV systems differs. This paper an array (17 series, 13 parallel) was chosen to produce 100 kWp for an on-grid PV system. It investigates the PV system in three cities in Iraq (Mosul, Baghdad, and Basrah). Effect of albedo factor, high and pitch of the bifacial module on energy yield have been studied using PVsyst (software). It has been found that the effect is less for a pitch greater than 6 m. The energy gained from bifacial and monofacial PV system module in these cities shows that Mosul is the most suitable for installing both PV systems followed by Baghdad and lastly Basrah. However, in Basrah, the bifacial gain is 12% higher in the energy than monofacial as irradiation there is higher than the other locations, especially for elevation above 1.5 m. Moreover, the cost of bifacial array is 7.23% higher than monofacial, but this additional cost is acceptable since the bifacial gain is about 11.3% higher energy compared to the monofacial.

COPRAS ve MAIRCA Yöntemleriyle Çorum İlinde Kurulabilecek Kompost Tesislerinin Optimallik Sıralaması

The compost product, which is a biologically active substance, emerges as a result of microbial decomposition of organic materials under controlled conditions. This product, which is used for the improvement of soil structure and the development of agricultural products, also offers opportunities in terms of minimizing the damage caused by organic wastes to the environment. It is important to encourage efforts for compost production, especially in terms of both disposal and economic evaluation of wastes generated in animal production farms. Determining the most suitable location of a facility for the utilization of animal wastes as compost, which will be obtained from livestock enterprises scattered in different geographical areas, will be an essential study in terms of minimizing operating costs. For such a facility, it would be an appropriate approach to use multi-criteria decision making methods to choose among predetermined facility location alternatives. In this study, a total of 17 facility location alternatives with 83,163 cattle potential in Çorum province were ranked according to the criteria determined and weighted by means of SWARA method. The optimal ranking of 17 alternatives determined by K-Means clustering analysis was carried out by COPRAS and MAIRCA methods. According to the ranking results obtained from both methods, it was determined that cluster number 6 was in the first rank, cluster number 4 was in the second rank, and cluster number 3 was in the third rank.

The Potential for Hydrolysed Sheep Wool as a Sustainable Source of Fertiliser for Irish Agriculture

Suppressed wool prices in Ireland over the last number of years has led to situations where the cost of shearing animals is greater than the wools’ value, leading to net losses per animal for farmers. Populations of sheep in Ireland and nutrient values of wool from literature sources were used to determine the quantity of nutrients that could be produced on an annual basis using hydrolysis techniques. Results of this study suggest that up to 15.8% of the nitrogen required to produce Ireland’s cereal crops can be met annually using hydrolysed sheep wool in an economically feasible manner along with considerable amounts of sulphur, zinc, and copper. Most of the cost associated with the process is the purchasing of wool from farmers at an economically favourable level for farmers. Based on the spatial distribution of these animals, the town of Athlone is the most suitable location for a processing facility.

A New Approach to Barrier Verification

Objectives/Scope Verification and testing of a wellbore barrier, in older assets has proven to be challenging. Even more so when the well has structural issues, indemnities or weak spots in the barrier envelope, that limits the possibility to get a positive pressure verification of the barrier with an applied surface pressure. The paper will air on the operational use of this novel test method and the tools used, to allow an in well verification of any type of barrier to secure the well for a repair or a upcoming P/A operation. A pilot job case history will be included to illustrate use of the principles. Methods, Procedures, Process Find a suitable location with necessary support and strength in the well. If installing a mechanical barrier by means of a bridge plug as the primary barrier, we will monitor the installation forces in the anchoring and sealing sequence. This individual signature will be verified towards a nominal base line signature towards a library of thousands of collected installation profiles. Any abnormality can trigger a release and possible relocating of the barrier. A second verification barrier will then be installed above the primary barrier. When both installation signatures are accounted for, we can pressure test the installed barriers. This is done with a pressure inflow tool, where we introduce a calculated predetermined pressure drop between the installed primary barrier and the verification barrier. By monitoring this pressure alteration vs. the pressure above the verification barrier, we can determine if we have a verified barrier. Results, Observations, Conclusions We now have the Primary Barrier verified in the direction of flow (negative pressure test). And verification barrier as the secondary barrier (verified with a positive pressure test). If a dual barrier is requested, you can leave the verification barrier as secondary barrier. Novel/Additional Information Pressure manipulation is done with existing and proven technology and is re-usable after re-setting at surface. By monitoring this pressure alteration, we can verify the installed primary and verification barrier in one run. This without any time-consuming pressure manipulating from surface.

Investigation on Suitable Spat Collectiors and Culture Sites for Edible Oyster in the Coast of Bay of Bengal, Bangladesh

Potential spat collectors and suitable culture sites were investigated for the development of edible oyster culture from June to December 2019 at three study sites (Moheshkhali, the Jeti of Nuniarchora, and Sonadia) of Cox’s Bazar coast of Bangladesh. Four types of collectors such as oyster shell, earthen pot, kortal (windowpane oyster shell) and tiles were investigated. On site sampling of water quality parameters and number of spats on each collector were done at 15-days interval following standard methods. Results indicated insignificant difference (P > 0.05) in temperature, salinity, dissolved oxygen and pH, while significant difference (P < 0.05) in total dissolved solids, total suspended solids and Chl-a content of the water among the study locations. However, these parameters were in suitable range for growth and spawning of oyster. Results also indicated spat recruitment was significantly influenced by the types of collectors and study locations with significantly (P < 0.05) higher spat were recruited in Tiles. Tiles were also found to facilitate with an advantage of recycling of this collector. The location in interaction with polluting materials such as total dissolved solids and total suspended solids had a significant effect on spat recruitment rate and therefore, Sonadia was the most suitable location for spat recruitment. This study site can also be used as a suitable location for the development of oyster culture in the cost of Bay of Bengal, Bangladesh based on its environmental characteristics. Bangladesh J. Zool. 49 (2): 257-265, 2021

Dampak Dana Alokasi Khusus Pertanian dan Irigasi Terhadap Produksi Padi Sawah dan Ketahanan Pangan Kabupaten/Kota di Provinsi Jambi

How important is the impact of special allocation funds (DAK) on agriculture and irrigation as policy input in food production and food security in the regions. To answer these problems, a study was conducted with the objectives of: 1) formulating an economic model for lowland rice commodity related to the financing of special allocation funds (DAK) for agriculture and irrigation in Jambi Province; and 2) analysis of the impact of funding for the special allocation fund (DAK) for agriculture and irrigation on the area of irrigation, rice fields and food security in districts / cities in Jambi Province. The simulation results show that an increase in the supply of financing from special allocation funds (agriculture and irrigation) can have a positive impact on increasing resources (irrigation area), food production, and regional food security. In order to be more effective in allocating funds, it is advisable to synergize with the allocation of subsidized fertilizers and seeds in each district / city in Jambi Province. Besides being aimed at maintaining and repairing irrigation networks in several districts / cities, the DAK irrigation program needs to be expanded to develop small - medium scale irrigation models for potential wetlands (rainfed, swamp, tidal) for the production of rice and other food crops. The potential available land types require a suitable location-specific technology package for rice and other food crops. Likewise, the use of cheaper alternative inputs. Reorientation of programs funded by DAK for agriculture in each district / city in Jambi province is needed to achieve effectiveness and impact on increasing lowland rice production and food security in the regions.Keywords: Allocation Funds, Food Security, Irrigation, Paddy, Simultaneity Model

ACCOMMODATION NEEDS AND PREFERENCES AMONG INTERNATIONAL MUSLIM STUDENT TRAVELERS

The Muslim tourist segment is regarded as one of the demanding segments in the tourism industry at the current state. It is understood that Muslim travelers prefer to select tourist destinations that bear Islamic elements thus allowing for activities to be done based on religious norms. This would include facilities for prayers, having Halal food and beverages, are liquor-free, and abide by Islamic dress codes; among others. These elements undoubtedly will provide an enriching experience during their travels. Therefore, the aim of this paper is to investigate Muslim travelers’ perception regarding accommodation experiences that Muslim travelers encounter during their stay to realign with Muslim traveller’s needs and preferences. As this study is exploratory in nature, a qualitative research design is applied and 14 international Muslim informants who have travelled internationally were interviewed during the data collection process. The findings revealed that Muslim travelers seek accommodation that offers special necessities for Muslim travelers, located in a suitable location, and chooses the accommodation that offers a favourable service experience. This study has supported previous literature on enhancing Muslim customers’ experience in terms of accommodation provision worldwide. Furthermore, the findings aid in enhancing the needs and preferences of Muslim travelers during traveling hence supporting the growth of Halal tourism. It is seen that tourist destinations and facilities that can provide the faith-based needs required by Muslim tourists will exceed in the creation of a memorable and meaningful tourist experience.

Analysis of EU Quality Norms for Organic Products

The implementation of organic farming for smallholder will most likely not occur on their initiative. If one wants to implement organic farming for smallholders there needs to be a strong governing organization. An aid factor is needed to make the cooperation with smallholders feasible. The project then could start with a cluster of smallholders with a suitable location for the outbound logistics and an appropriate educational level for further development of the quality management system. There is an EU-regulation for the quality norms of organic products. Different certifications schemes and organizations will be presented relevant for the organic products. This paper presented the analysis of EU quality norms for organic products. Keywords: organic products, EU quality norms, certifications.