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Riaz Uddin,Ali S. Alghamdi,Muhammad Hammad Uddin,Ahmed Bilal Awan,Syed Atif Naseem 대한전기학회 2019 Journal of Electrical Engineering & Technology Vol.14 No.6
The fault diagnosis and control through fault detection, isolation and supply restoration (FDIR) technique is the part of a commonly used distribution management system application in smart grid. When the fault occurs, it becomes essential to detect and isolate the faulty section of the distribution network at once and then restore back to its running condition through tie switches. The communication between IEDs is done through diferent communication mediums such as Ethernet, wireless, power line communication etc. Therefore, formal analysis of the FDIR mechanism is required with communication network (ideally Ethernet), which helps us to predict the behavior of FDIR response upon the occurrence of fault in terms of various important probabilities, reliability study and efciency (showing the system will work properly). In this regard, for the above said analyses, this article discusses (a) the development of the Markovian model of FDIR for distribution network of smart grid considering Tianjin Electric Power Network as case study with intelligent electronic devices (IEDs) using ideal communication medium (Ethernet); (b) utilized probabilistic model checker (PRISM tool) to predict the probabilities; (c) perform the reliability analyses and (d) study the efciency of FDIR behavior for future grid using logical properties. The detailed analysis and prediction (done for the fault occurrence scenario) mainly focus in determining the (1) the probability of switching failures of FDIR in smart grid; (2) the probability of isolating the defective switch from the system within limited time and (3) the probability of restoring the system automatically within the minimum possible interval.
Crossability among Modern Roses and Heterosis of Quantitative and Qualitative Traits in Hybrids
Muhammad Nadeem,Adnan Younis,Atif Riaz,임기병 한국원예학회 2015 Horticulture, Environment, and Biotechnology Vol.56 No.4
Nine divergent popular hybrid rose cultivars and 22 of their F1 hybrids were studied to determine the extent of crossability and heterosis effects for several quantitative and qualitative traits in the climatic conditions of Faisalabad, Pakistan. The percentage of pollen germination differed across cultivars. Gruss-an-Teplitz exhibited the maximum value for pollen germination (46.5%), followed by Autumn Sunset (38.9%). Iceberg, being triploid, presented the lowest percentage of germination. All cultivars exhibited a strong correlation between pollen germination percentages in the lab and crossing success under field conditions. The cultivar Handel showed remarkable fruit-set and crossing success. In contrast, the cultivar Iceberg exhibited very poor crossing success rates. The setting of hips after crossing was maximal in the crosses Handel × Louise Odier and Autumn Sunset × Casino (83% each). The number of seeds in a single hip varied among cultivars. The potential for heterotic and heterobeltiotic was also variable and showed contrasting performance between F1 progenies for various qualitative and quantitative traits. The parent cultivars and progenies were sorted into five major groups by cluster analysis based on phenotypic variation. Phenotypic and genotypic coefficients of variability and heritability percentages varied among all parent cultivars for all morphological traits.
Adnan Younis,Atif Riaz,Muhammad Irfan Siddique,Ki-Byung Lim,Yoon-Jung Hwang,Muhammad Asif Khan 한국화훼산업육성협회 2013 화훼연구 Vol.21 No.4
Potting media are an integral part of potted plants production system, formulated by a mixture of various raw materials to act as a substrate for plant support and source of nutrition. There is a wide range of potting media available, which are used for quality production of high-value plants worldwide. In this study, quality assessment of Dracaena plants grown in different potting media like: mushroom compost, peat, sand, farmyard manure, coconut coir, and leaf compost in different combinations were carried out. A mixture of sand, mushroom compost, coconut coir, and peat proved to be the best, by promoting root and shoot growth, leaf area, fresh and dry weights of root and shoot, and also improved overall quality of the plant. Media containing garden soil alone or a mixture of sand and leaf compost produced the lowest quality of plants with considerable reduction in most of the growth parameters. Anatomical parameters showed weak relation to media composition as compared to other morphological features. The best medium was made with sand, mushroom compost, coconut coir, peat, that produced plants with thick epidermis and larger pith cells, but thin endodermis and smaller metaxylem vessels in their roots. As moisture availability was sufficient enough in this medium combination, the development of water storing tissue may not contribute significantly. However, epidermis can play a decisive role in protecting roots from external environmental hazards.
Microsatellite Analysis of Rosa damascena from Pakistan and Iran
Amjad Farooq,Mahnaz Kiani,Muhammad Aslam Khan,Atif Riaz,Asif Ali Khan,Natalie Anderson,David H. Byrne 한국원예학회 2013 Horticulture, Environment, and Biotechnology Vol.54 No.2
For the perfume industry, Rosa damascena is the most important species used in the production of rose attar which is made by distilling volatile oils from the petals of flowers. It is also used widely in the manufacture of rose water, as a flavoring agent. Other species like Rosa gallica L., Rosa centifolia L., Rosa × borboniana Desp. and the rose cultivar Gruss an Teplitz also exhibit the fragrance that is sought by perfumeries in the world. The main rose oil producers in the world are Turkey and Bulgaria, and they are obtaining the rose oil almost exclusively from the single clone of R. damascena. In the recent studies a wide genetic diversity for R. damascena has been revealed in Iran, but there was a need to explore and evaluate the R. damascena in the neighboring areas of Iran. Thus the new research project was planned with the objective to evaluate the genetic diversity amongst R. damascena landraces grown in Pakistan and the subsequent comparison with tested germplasm grown in Iran. Further, the study is based on the collection of Damask and selected garden roses from Pakistan, Iran and USA, determining the characterization through microsatellite markers. The SSR markers confirmed the high level of diversity of the Rosa damascena germplasm within Iran and showed that the Pakistani genotypes were similar to those from the Iranian provinces of Isfahan, Kerman and Fars. The garden rose cultivars were distantly related.