Survey on parasitic infections in the endemic fishes from north of the west- Azarbaigan (Aras, Zangbar and Ghotor Rivers)

A survey on Parasitic infections on endemic fishes of North of west Azarbaijan province were done during July 2001 Oct 2002. Altogether 267 specimens from 11 different fish species were examined. The fishes were collected from seven stations of Aras, Zangbar and Ghotor Rivers. The fishes were transported alive to the laboratory where they were meaursed and weighted. Then they were killed by cutting the spinal cord.. According to the results of this study 28 different parasites were revealed, 23 of them were detected to the species level and 5 of them to the genus level. The metazoans are as follows: The monogeneans, are Dactylogyrus extensus , D. chramuli, D. lenkorani, D. kendalanicus, Silurodiscoides siluri, Diplozoon megan and Gyrodoctilus sp. Two digeneans :Diplostomum spathaceum , Allocreadium ispoporum. Three Cestods: Ligula intestinalis, Digrama sp. and Caryophylleous laticeps. Two nematods: Rhabdochona hellichi, Eustrongylides excisus and only one acanthocephalus, Neoechinorhynchus rutili . The Protozoans are: Ichtyophthirius multifilis, Trichodina perforata, Chilodonella sp., Amphileptus branchiarum, Apiosoma sp/. Vorticella sp/. Myxobolus musayevi, M. cristatus. And two protozans from freshwater fishes: Stylonchia pustulata. and Arcella vulgaris. According the results of this study five new parasites and six new hosts for Iranian. Freshwater fishes were introduced. Diplozoon megan from: Abramis brama, Carassius carassius, Capoeta capoeta, Cyprinus carpio, Rutilus rutilus and Alburnoides bipunctatus. Trichodina perforata from Lucioperca lucioperca, Capoeta capoeta, Alburnoides bipunctatus, Barbus capito and Silurus glanis. Myxobolus cristatus, Tetrahymena pyriformis and Amphileptus branchiarum from Capoeta capoeta. Finally , Stylonchia pustulata and Arcella vulgaris for the first time were recoreded from freshwaters of Iran

Traumatic Pulmonary Pneumatoceles (Pseudocyst)

Introduction: Traumatic pulmonary parenchymal cavitary lesions (TPPCs) are pulmonary pseudocysts raiding secondary to lung contusion. Method: To provide an overview of the etiology, presentation, diagnosis and treatment of TPPCs, and to discuss this in the context of a cohort of 12 retrospectively reviewed patients with TPPCs presenting to Sahlgrenska University Hospital, Gothenburg, Sweden, from January 2014 to December 2016. Between January 2014 and December 2016, a total of twelve trauma patients presented to Sahlgrenska University Hospital with TPPC following blunt trauma. Results: TPPCs are of limited clinical consequence. Inexperienced clinicians may treat these inappropriately. A Computed Tomography (CT) scan is the investigation of choice. Treatment is symptomatic. Intervention is indicated only in case of complications

The first inherited retinal disease registry in Iran: Research protocol and results of a pilot study

Background: To describe the protocol for developing a national inherited retinal disease (IRD) registry in Iran and present its initial report. Methods: This community-based participatory research was approved by the Ministry of Health and Medical Education of Iran in 2016. To provide the minimum data set (MDS), several focus group meetings were held. The final MDS was handed over to an engineering team to develop a web-based software. In the pilot phase, the software was set up in two referral centers in Iran. Final IRD diagnosis was made based on clinical manifestations and genetic findings. Ultimately, patient registration was done based on all clinical and non-clinical manifestations. Results: Initially, a total of 151 data elements were approved with Delphi technique. The registry software went live at www.IRDReg.org based on DHIS2 open source license agreement since February 2016. So far, a total of 1001 patients have been registered with a mean age of 32.41±15.60 years (range, 3 months to 74 years). The majority of the registered patients had retinitis pigmentosa (42, 95 CI: 38.9 to 45). Genetic testing was done for approximately 20 of the registered individuals. Conclusion: Our study shows successful web-based software design and data collection as a proof of concept for the first IRD registry in Iran. Multicenter integration of the IRD registry in medical centers throughout the country is well underway as planned. These data will assist researchers to rapidly access information about the distribution and genetic patterns of this disease. © 2020 The Author(s). This is an open-access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons. org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited

A three-dimensional model of an articulated frame-steer vehicle for coupled ride and handling dynamic analyses

The ride and directional stability properties of an articulated frame steer vehicle (ASV) are investigated through formulation of a comprehensive three-dimensional vehicle model. The model integrates a kineto-dynamic formulation of the frame steering system, a torsio-elastic rear axle suspension, and random roughness of two parallel terrain tracks. The validity of the model is illustrated on the basis of the field-measured ride vibration data and steering strut responses to a 90-degree-turn manoeuvre. The model is applied to determine the ride and yaw/roll dynamic responses of an articulated dump truck with and without a rear-axle suspension under steady and transient steering inputs. The ride responses are evaluated in terms of weighted and un-weighted rms accelerations at the operator location, while the directional responses are obtained in terms of static and dynamic rollover thresholds, rearward amplification ratio, and critical speed corresponding to snaking instability. The results suggest that the rear-axle torsio-elastic suspension yields slightly lower yaw and roll stability limit of the vehicle but substantial reductions in the ride vibration levels. Tyre interactions with the rough terrains affect the stability limits in a highly adverse manner. The results suggest that suspension design with greater lateral and torsional stiffness could yield enhanced directional stability limits while preserving the ride performance

Multi-objective conceptual design optimization of a domestic unmanned airship

Autonomous airships have gained a high degree of importance over the last decades, both theoretically as well and practically. This is due to their long endurance capability needed for monitoring, observation and communication missions. In this paper, a Multi-Objective Optimization approach (MOO) is followed for conceptual design of an airship taking aerody- namic drag, static stability, performance as well as the production cost that is proportional to the helium mass and the hull surface area, into account. Optimal interaction of the afo- rementioned disciplinary objectives is desirable and focused through the MOO analysis. Standard airship configurations are categorized into three major components that include the main body (hull), stabilizers (elevators and rudders) and gondola. Naturally, component sizing and positioning play an important role in the overall static stability and performance characteristics of the airship. The most important consequence of MOO analysis is that the resulting design not only meets the mission requirement, but will also be volumetrically optimal while having a desirable static and performance characteristics. The results of this paper are partly validated in the design and construction of a domestic unmanned airship indicating a good potential for the proposed approach