112 research outputs found
Life history traits and gonad histology of an endemic cyprinid fish, Mond spotted barb, Capoeta mandica from Southern Iran
The life history traits and gonad development of an endemic cyprinid fish, the spotted barb, Capoeta mandica (Bianco & Banarescu 1982), from southern Iran was investigated by regular monthly collections from February 2006 through January 2007 and on the basis of microscopic and macroscopic analyses. No information on the spawning characteristics of the fish are available to date. A total of 335 specimens were captured using electrofishing including 253 males and 102 females, resulting in 2.5:1 (male: female) sex ratio, which is significantly different from the expected ratio. The commonly known five standard maturation stages were determined based on the size, shape and weight of the gonads, degree of occupation of the body cavity, presence or absence of ripe oocytes, or milt, diameter of the oocytes in the ovary, and histological observations. These stages were correlated to the reproductive indices. The ovum diameters ranged from 0.04 to 1.31 mm, with the highest mean value in May. The condition factor of male and female specimens was the highest in April. The female GSI increased from March to May, peaking in the middle of spring and decreased significantly in June. Based on the gonad maturation stages, gonadosomatic index (GSI), modified GSI, mean egg diameter, condition factor (K) and Dobriyal index (DI), it was concluded that the spotted barb spawns during May and June. The provided data, contribute baseline data towards management ecology and conservation of this endemic fish species
Hemiculter leucisculus (Basilewsky, 1855) and Alburnus caeruleus Heckel, 1843: New data on their distributions in Iran
This paper provides information on the geographic distributions of two cyprinid species: Hemiculter leucisculus (Basilewsky, 1855) and Alburnus caeruleus Heckel, 1843, in the world and the entire drainage systems in Iran. The new distribution records were taken from Maroon River (Jarrahi River system) and Chardaval River (Karkheh river system), both in Tigris River basin showing wide and narrow distribution ranges of these two cyprinid fishes, respectively. The main introduction sites and distribution range of H. leucisculus is the southern parts of the Caspian Sea basin in Iran from where it has probably been translocated to other Iranian basins along with exotic Chinese carps. Although A. caeruleus is native to Tigris River basin, it had been already recorded only from Gamasiab and Doab rivers in 2009 in Karkheh River system (Tigris) and thus the present study extends its distribution range. In case of alien species, human-mediated fish introductions may increase faunal similarity among primary drainages due to a strong tendency for taxonomic homogenization caused primarily by the widespread introduction of cyprinid fishes. Fish faunal homogenization might be highest in drainages (e.g. Caspian Sea and Tigris basins) subjected to the greatest degree of disturbance associated with human settlement, infrastructure and change in land use. The provided data might be used in conservation program of freshwater fishes of Iran
Modus D5.2 Final project results report
The Final Project Results Report of the Modus project provides a comprehensive overview of the project. First, it outlines the operational context, the project scope and the objectives in order to show the relevance of the project to the ATM Master Plan as well as other European high-level strategic mobility agendas. Based on this scope and the objectives, the report describes the work performed and discusses the key project results, including a list of all technical deliverables. Based on the work performed and the results, the report contains a detailed maturity gate assessment which described the Modus solution and how this solution has been achieved. Furthermore, the report describes the overall conclusions of the project, the technical lessons learned and identifies further R&D needs
Modus D4.2 Mobility models description
Air-rail multimodal mobility has the potential to play a significant role in addressing European mobility challenges such as emissions reduction goals, and capacity shortages, and in moving towards a wider European multimodal transport network. There is still a need to better understand the potential role of rail when substituting current air links both from a strategic and a full, tactical mobility perspective, particularly when passenger connections are considered. Here we present the development of an innovative approach towards data driven, integrated air-rail modelling, considering passenger door-to-door itineraries
Impacto de la estabilidad en el rendimiento de los clubes de fútbol de la Copa del Golfo Pérsico
The objective of this study was to determine the impact of stability/instability on the performance of Persian Gulf Pro League football clubs. All the clubs that had participated in more than 3 seasons of the last 17 seasons (2001-2019) of the Persian Gulf Pro League were analyzed in this study (n=26). The performance of each team (improvement or worsening in ranking) and their stability were analyzed year after year in the period 2001-2019. The stability was divided in four components: CEO, head coach, players and club. The statistical analysis was performed with the software SPSS. Stability significantly (p<0.05) increased performance and instability significantly (p<0.05) decreased performance of the clubs in the four components studied: CEO, head coach, players and club. Therefore, it is expected that the results of this study encourage Iranian football clubs to increase their stability.El objetivo de este estudio fue determinar el impacto de la estabilidad/inestabilidad en el rendimiento de los clubes de fútbol de la Copa del Golfo Pérsico. Todos los clubes que habían participado en más de 3 temporadas de las últimas 17 temporadas (2001-2019) de la Copa del Golfo Pérsico fueron analizados en este estudio (n=26). El rendimiento de cada equipo (mejora o empeoramiento en el ranking) y su estabilidad se analizaron año tras año en el período 2001-2019. La estabilidad se dividió en cuatro componentes: director, entrenador, jugadores y club. El análisis estadístico se realizó con el software SPSS. La estabilidad aumentó significativamente (p<0.05) el rendimiento y la inestabilidad disminuyó significativamente (p<0.05) el rendimiento de los clubes en los cuatro componentes estudiados: director, entrenador, jugadores y club. Por lo tanto, se espera que los resultados de este estudio animen a los clubes de fútbol iraníes a aumentar su estabilidad
Adult-type granulosa cell tumor of the ovary : a FOXL2-centric disease
Adult-type granulosa cell tumors (aGCTs) account for 90% of malignant ovarian sex cord-stromal tumors and 2-5% of all ovarian cancers. These tumors are usually diagnosed at an early stage and are treated with surgery. However, one-third of patients relapse between 4 and 8 years after initial diagnosis, and there are currently no effective treatments other than surgery for these relapsed patients. As the majority of aGCTs (>95%) harbor a somatic mutation in FOXL2 (c.C402G; p.C134W), the aim of this study was to identify genetic mutations besides FOXL2 C402G in aGCTs that could explain the clinical diversity of this disease. Whole-genome sequencing of 10 aGCTs and their matched normal blood was performed to identify somatic mutations. From this analysis, a custom amplicon-based panel was designed to sequence 39 genes of interest in a validation cohort of 83 aGCTs collected internationally. KMT2D inactivating mutations were present in 10 of 93 aGCTs (10.8%), and the frequency of these mutations was similar between primary and recurrent aGCTs. Inactivating mutations, including a splice site mutation in candidate tumor suppressor WNK2 and nonsense mutations in PIK3R1 and NLRC5, were identified at a low frequency in our cohort. Missense mutations were identified in cell cycle-related genes TP53, CDKN2D, and CDK1. From these data, we conclude that aGCTs are comparatively a homogeneous group of tumors that arise from a limited set of genetic events and are characterized by the FOXL2 C402G mutation. Secondary mutations occur in a subset of patients but do not explain the diverse clinical behavior of this disease. As the FOXL2 C402G mutation remains the main driver of this disease, progress in the development of therapeutics for aGCT would likely come from understanding the functional consequences of the FOXL2 C402G mutation.Peer reviewe
Power amplifier linearization technique with IQ imbalance and crosstalk compensation for broadband MIMO-OFDM transmitters
Mechanical Strain Stabilizes Reconstituted Collagen Fibrils against Enzymatic Degradation by Mammalian Collagenase Matrix Metalloproteinase 8 (MMP-8)
Collagen, a triple-helical, self-organizing protein, is the predominant structural protein in mammals. It is found in bone, ligament, tendon, cartilage, intervertebral disc, skin, blood vessel, and cornea. We have recently postulated that fibrillar collagens (and their complementary enzymes) comprise the basis of a smart structural system which appears to support the retention of molecules in fibrils which are under tensile mechanical strain. The theory suggests that the mechanisms which drive the preferential accumulation of collagen in loaded tissue operate at the molecular level and are not solely cell-driven. The concept reduces control of matrix morphology to an interaction between molecules and the most relevant, physical, and persistent signal: mechanical strain.The investigation was carried out in an environmentally-controlled microbioreactor in which reconstituted type I collagen micronetworks were gently strained between micropipettes. The strained micronetworks were exposed to active matrix metalloproteinase 8 (MMP-8) and relative degradation rates for loaded and unloaded fibrils were tracked simultaneously using label-free differential interference contrast (DIC) imaging. It was found that applied tensile mechanical strain significantly increased degradation time of loaded fibrils compared to unloaded, paired controls. In many cases, strained fibrils were detectable long after unstrained fibrils were degraded.In this investigation we demonstrate for the first time that applied mechanical strain preferentially preserves collagen fibrils in the presence of a physiologically-important mammalian enzyme: MMP-8. These results have the potential to contribute to our understanding of many collagen matrix phenomena including development, adaptation, remodeling and disease. Additionally, tissue engineering could benefit from the ability to sculpt desired structures from physiologically compatible and mutable collagen
Machine Learning based tool for CMS RPC currents quality monitoring
The muon system of the CERN Compact Muon Solenoid (CMS) experiment includes
more than a thousand Resistive Plate Chambers (RPC). They are gaseous detectors
operated in the hostile environment of the CMS underground cavern on the Large
Hadron Collider where pp luminosities of up to
are routinely achieved. The CMS RPC system
performance is constantly monitored and the detector is regularly maintained to
ensure stable operation. The main monitorable characteristics are dark current,
efficiency for muon detection, noise rate etc. Herein we describe an automated
tool for CMS RPC current monitoring which uses Machine Learning techniques. We
further elaborate on the dedicated generalized linear model proposed already
and add autoencoder models for self-consistent predictions as well as hybrid
models to allow for RPC current predictions in a distant future
Effects of the electronic threshold on the performance of the RPC system of the CMS experiment
Resistive Plate Chambers have a very important role for muon triggering both in the barrel and in the endcap regions of the CMS experiment at the Large Hadron Collider (LHC). In order to optimize their performance, it is of primary importance to tune the electronic threshold of the front-end boards reading the signals from these detectors. In this paper we present the results of a study aimed to evaluate the effects on the RPC efficiency, cluster size and detector intrinsic noise rate, of variations of the electronics threshold voltage
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