Occurrence of Hysterothylacium Species (Nematoda: Raphidascarididae) from Some Marine Fishes from Iraqi Waters

Parasitological investigation of 22 species of marine fishes in territorial Iraqi waters, during the period from October 2019 till September 2020, revealed recording of six different species of Hysterothylacium Ward & Magath, 1917 in different developmental stages. These nematodes including two species in adult stage of Hysterothylacium viz, H. reliquens (Norris & Overstreet, 1975) and Hysterothylacium sp. (females only), two species of fourth larval stages (Hysterothylacium sp. type BH and Hysterothylacium sp. type BI) and two species of third larval stages (Hysterothylacium sp. type BA and Hysterothylacium sp. type BC). Identification of Hysterothylacium sp. was based on female only isolated from Blackfin stonefish Pseudosynanceia melanostigma Day, 1875; Hysterothylacium sp. type BH 4th larval stage isolated from Arabian backspot threadfin Polydactylus mullani (Hora, 1926) and Hysterothylacium sp. type BI 4th larval stage from purple-spotted bigeye Priacanthus tayenus Richardson, 1846; all these parasitic nematodes recorded for the first time in the Arabian Gulf. In addition, 14 fish species are considered as new hosts for Hysterothylacium sp. type BC 3rd larval stage. Description of female Hysterothylacium sp., Hysterothylacium sp. type BH and BI both 4th larval stages are given. The interest record of inverse intestinal caecum in some specimens of 3rd larval stage of Hysterothylacium type BC in some marine fishes of the current study is given

Occurrence of Hysterothylacium Species (Nematoda: Raphidascarididae) from Some Marine Fishes from Iraqi Waters

Parasitological investigation of 22 species of marine fishes in territorial Iraqi waters, during the period from October 2019 till September 2020, revealed recording of six different species of Hysterothylacium Ward & Magath, 1917 in different developmental stages. These nematodes including two species in adult stage of Hysterothylacium viz, H. reliquens (Norris & Overstreet, 1975) and Hysterothylacium sp. (females only), two species of fourth larval stages (Hysterothylacium sp. type BH and Hysterothylacium sp. type BI) and two species of third larval stages (Hysterothylacium sp. type BA and Hysterothylacium sp. type BC). Identification of Hysterothylacium sp. was based on female only isolated from Blackfin stonefish Pseudosynanceia melanostigma Day, 1875; Hysterothylacium sp. type BH 4th larval stage isolated from Arabian backspot threadfin Polydactylus mullani (Hora, 1926) and Hysterothylacium sp. type BI 4th larval stage from purple-spotted bigeye Priacanthus tayenus Richardson, 1846; all these parasitic nematodes recorded for the first time in the Arabian Gulf. In addition, 14 fish species are considered as new hosts for Hysterothylacium sp. type BC 3rd larval stage. Description of female Hysterothylacium sp., Hysterothylacium sp. type BH and BI both 4th larval stages are given. The interest record of inverse intestinal caecum in some specimens of 3rd larval stage of Hysterothylacium type BC in some marine fishes of the current study is given

Load Frequency Control for Hydropower Plants using PID Controller

Many development republics began to get rid of conventional energy and towards to use renewable energy like hydropower system, solar cells and wind turbines as soon as possible. Load Frequency Control (LFC) problem is coming to be the main topics for mentioning schemes due to not corresponding between main power system inputs such as change load demand and change in speed turbine settings. This paper illustrates a selftuning control of hydropower system that suggested and confirmed under Automatic Generation Control (AGC) in power scheme. The suggested power system involves one single area. The suggested self-tuning control system is employed in performing the automatic generation control for load frequency control request and compared it with conventional control structure. The power system dynamic modeling has regularly built in several essential parameters which have a significant influence According to frequency limitation. The main problem with all controllers is an exaggerated reaction to minor errors, producing the system to oscillate. The output response results for hydropower system obviously proved the benefit of using maximum load demand by tuning PID controller. Whereas, tuning PID controller has got properly more rapid output response and minimal overshoot

First Record of Calydiscoides difficilis (Yamaguti, 1953) Young, 1969 (Monogenoidea, Polyonchoinea, Diplectaniade) on Gills of Three Fish species off Marine Waters of Iraq

A parasitological examination of two species of lethrinid fishes; Pink ear emperor Lethrinus lentjan, Spangled emperor L. nebulosus and Areolate grouper Epinephelus areolatus caught in Iraqi marine territorial waters from January to December 2020, revealed that the gills of the fishes were infected with deiplectanid monogenoid, which is identified as Calydiscoides difficilis (Yamaguti, 1953) Young, 1969. This study redescribed the parasite and for the first time described the egg and confirmed that the species has a wide range of dimension resulting from intraspecific variations. The measurements of hard and soft parts of the parasite collected from L. lentjan are smaller than those from L. nebulosus. In addition, the measurements from E. areolatus are close to that from L. lentjan or intermediate between L. nebulosus and L. lentjan. The past record of C. difficilis from L. harak is discussed and hence L. nebulosus and L. lentjan are considered as new records to the Arabian Gulf. Dimensions of the eggs of the parasite in the current study is given here for the first time. The occurrence of C. difficilis from Epinephelidae is considered as a new host family record

First Record of Calydiscoides difficilis (Yamaguti, 1953) Young, 1969 (Monogenoidea, Polyonchoinea, Diplectaniade) on Gills of Three Fish species off Marine Waters of Iraq

A parasitological examination of two species of lethrinid fishes; Pink ear emperor Lethrinus lentjan, Spangled emperor L. nebulosus and Areolate grouper Epinephelus areolatus caught in Iraqi marine territorial waters from January to December 2020, revealed that the gills of the fishes were infected with deiplectanid monogenoid, which is identified as Calydiscoides difficilis (Yamaguti, 1953) Young, 1969. This study redescribed the parasite and for the first time described the egg and confirmed that the species has a wide range of dimension resulting from intraspecific variations. The measurements of hard and soft parts of the parasite collected from L. lentjan are smaller than those from L. nebulosus. In addition, the measurements from E. areolatus are close to that from L. lentjan or intermediate between L. nebulosus and L. lentjan. The past record of C. difficilis from L. harak is discussed and hence L. nebulosus and L. lentjan are considered as new records to the Arabian Gulf. Dimensions of the eggs of the parasite in the current study is given here for the first time. The occurrence of C. difficilis from Epinephelidae is considered as a new host family record

Free Convection of Ag/H2O Nanofluid in Square Cavity with Different Position and Orientation of Egg Shaped Cylinder

A numerical simulation was conducted to study the free convection of Ag/H2O nanofluid between a square cavity with cold walls and an egg shaped cylinder with a hot wall. Utilizing the egg equation, dimensionless governing equations were solved using the Galerkin Finite Element Method (GFEM). In this work, several parameters were studied, i.e. Rayleigh number (103 ≤ Ra ≤ 106), volume fraction (0 ≤ φ ≤ 0.05), position (-0.2 ≤ Y ≤ 0.2), and orientation angle (-90° ≤ γ ≤ 90°). The numerical results are presented as streamline contours, isotherm contours, and local and average Nusselt numbers. Moreover, the results were used to analyze the fluids’ structure, temperature distribution, and heat transfer rate. The numerical results confirmed that the stream intensity value increased with an increase of the Rayleigh number as well as the movement of the cylinder towards the bottom wall for all values of the orientation angle. Variation of the vertical position of the cylinder inside the cavity had a noticeable effect on , which increased by 50% at γ = -90°, and by 58% at γ = -45°. However, at Y = -0.2,  increased by 58% at γ = -45° and decreased by 7% at γ = -90°. The highest heat transfer rate was obtained at high Rayleigh number (Ra = 106), volume fraction (φ = 0.05), negative position (Y = -0.2), and the highest positive orientation angle (γ = 90°)

Barramundi (Lates calcarifer) from Iraq: a new record for the Arabian Gulf, with a highlight on it genetic origins and description of two skeletal deformities

The natural distribution of Lates calcarifer (barramundi or Asian sea bass), ranges from western India, around Sri Lanka to the Bay of Bengal, and through the whole of Southeast Asia to Papua New Guinea and northern Australia. It is not known to be native to the Arabian Gulf, although the species has recently been introduced for aquaculture production in Iran. In 2019, 12 adult barramundi were caught from freshwater in the Shatt al-Arab River, its estuary and marine waters bordering Iraq. This is the first wild-capture record of this species for Iraq’s inland waters and the northern Arabian Gulf. The specimens were morphologically described, while genetic structure analyses indicated that the specimens likely originated from Australian and Thailand genetic stocks and thus probably were aquaculture escapees from farmed populations. Among the L. calcarifer collected from the freshwater environment on the Shatt al-Arab River, one specimen exhibited saddleback syndrome, and another showed abnormality in the left operculum. The results are interesting and useful in reminding people to prevent aquaculture escapees. The aim of this study was to morphologically describe the specimens and undertake a genetic analysis to determine the likely provenance of the fish

Efficacy of tranexamic acid administration in traumatic brain injury patients: A review

BackgroundAnti-fibrinolytic medications decrease traumatic intracranial haemorrhage (ICH). Tranexamic acid (TXA) is an anti-fibrinolytic, which recently has shown effectiveness in management of traumatic haemorrhage‎.AimsTo summarize the randomized control trials (RCTs) that evaluate the efficacy of tranexamic acid administration in traumatic brain ‎injury (TBI) patients‎.‎Methods An electronic literature review, including PubMed, Google Scholar, and EBSCO that examining RCTs, observational, and experimental studies which study the efficacy of TXA administration in (TBI) patients.ResultsThe current review included 7 randomized studies reported the efficacy of TXA in management of TBI. TXA limit secondary brain injury by preventing the expansion of ICH. Administration of TXA exhibited a tendency to decrease head trauma-related mortality.ConclusionTXA significantly lower the risk of ICU expansion m and prevent brain injury related deaths

Priority of Kaplan Turbine and Small Hydropower Plants Over Other Resources: An Overview

Many developed countries gradually begin to dispense traditional energy origins plants that built on oil, coal usual gas owing to oil prices increment, fossil fuel cost, thermal pollution, and the crisis of worldwide energy. Large hydropower plants (LHP) and Mini (MHP) are less feasible than a small hydropower plant (SHP). Up to now, the Mechanism of appropriated turbine selection for a specific purpose is undefined obviously. Classification of hydropower schemes generally depends on the capacity of production. An installed plant capacity of up to 25 MW is regarded as an SHP. The capability of the SHP and future production and its economic operating option like run-of-river and clean development mechanism (CDM) making it's desirable. Moreover, in order to achieve dependable and reasonable production. Turbines classification divided according to turbines' net head and flow water rate. In this article, we provide analyzing and surveying on categories of the hydropower plant to show characteristics of each one, different SHP technology, properties for appropriated turbine and evaluate the economic potential of the feasible power plant

Record of the Yellowback Grunt <i>Pomadasys aheneus</i> McKay & Randall (Osteichthyes: Haemulidae) from the Arabian Gulf off Iraq

Record of the Yellowback Grunt <i>Pomadasys aheneus</i> McKay & Randall (Osteichthyes: Haemulidae) from the Arabian Gulf off Ira