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Background Being the native inhabitants of the Neolithic Fertile Crescent, Kurds were included in several maternal lineage studies concerning the Eurasian population. However, no study was performed on the Kurdish population of Sulaymaniyah city (latitude 33.314690 and longitude 44.376759). This study was carried out on a sample of Sorani Kurds living in Sulaymaniyah for the identification of population-related single nucleotide polymorphisms (SNPs) and modes of maternal lineage. Results In this study, 36 randomly selected healthy unrelated Kurdish subjects were enrolled. Whole mitochondrial DNA sequencing was performed. HaploGrep 2.0 and neutrality test (Tajima’s D) were employed for haplogroup identification and historical demography determination. When the outcomes were compared with previous studies in Kurds and the neighbouring nations, the identified haplogroups in the sample of study were members of the Western Eurasian haplogroups with a predominance of haplogroup H. Conclusions The whole mitochondrial DNA sequence is superior to the traditional analysis of the non-coding (control) region. Our study indicates a stronger relation of the studied group to the European lineage than to their neighbouring nations.

In this study, it was investigate about the engineering behavior of conventional concrete of grade M25, by replacing the fine aggregate by partially with crushed sea shell. On because of progression in the field of infrastructure, the dearth of construction material becomes upsurge day by day. All the investigator was observe to find the substitute construction materials to meet the demand of construction in world wide. The reason behind is, while continuous utilizing of the natural raw material for construction decline the resource of those materials and further, it leads to affect the routine function of the earth and made drastic change in the life cycle of living beings. Therefore, it is obvious to find out the possible alternative material to suit for all type of construction. In this study, the sea shell was used as a fine aggregate in the method of crushed powder in an apparent proportion such as 10%, 20% and 30% replacing in the place of fine aggregate sand. The compression and split tensile behavior of sea shell aggregate mixed concrete comparatively with plain sand concrete was studied under different curing periods such as 7 days, 14 days and 28 days. It was shows that at 20% replacement of crushed sea shell aggregate provide the compressive strength of 35 N/mm2 at 28 days of curing nearly with the design strength of M25 grade conventional concrete. It was also noticed that, the percentage increase of crushed sea shell decline the strength of concrete as radically. Hence it was acclaimed that, the percentage of crushed sea shell as fixed equal or below 10 % to get a better strength of concrete.

This paper presents recent investigation of acoustic emission (AE) behaviours in grinding processes. It demonstrated the acoustic emission features characterized in time and frequency domain are influenced by thermal behaviours of materials. By control laser conditions, the temperature elevation under laser irradiation can be similar to that in a grinding process. Therefore, an innovative concept that grinding process can be monitored by using thermal AE signatures from laser irradiation tests has been proposed. Accordingly, an artificial neural network (ANN), built on laser irradiation tests, was applied to monitor grinding thermal performance. The results showed that grinding performance variation due to wheel wear can be identified by using the ANN. This development could bring great benefits by reducing experimental works in the preparation of an ANN for grinding monitoring.