12 research outputs found
First record of the seed-eating wasp, Systole eremodauci (Hym.: Eurytomidae) from Iran
The family Eurytomidae includes economically important wasps, which feed on the seeds of various agricultural, horticultural and rangeland plants. This report is part of a survey conducted during 2009-2012 to identify the seed-eating pests of non-legume rangeland plants in the Fars province of Iran. The eurytomid species Systole eremodauci Zerova, 1994 was collected on ammoniacum plant, Dorema ammoniacum (D. Don.), and is first recorded from Iran
Advancing fishery-independent stock assessments for the Norway lobster (Nephrops norvegicus) with new monitoring techn
The Norway lobster, Nephrops norvegicus, supports a key European fishery.
Stock assessments for this species are mostly based on trawling and
UnderWater TeleVision (UWTV) surveys. However, N. norvegicus are
burrowing organisms and these survey methods are unable to sample or
observe individuals in their burrows. To account for this, UWTV surveys
generally assume that “1 burrow system = 1 animal”, due to the territorial
behavior of N. norvegicus. Nevertheless, this assumption still requires in-situ
validation. Here, we outline how to improve the accuracy of current stock
assessments for N. norvegicus with novel ecological monitoring technologies,
including: robotic fixed and mobile camera-platforms, telemetry,
environmental DNA (eDNA), and Artificial Intelligence (AI). First, we outline
the present status and threat for overexploitation in N. norvegicus stocks. Then,
we discuss how the burrowing behavior of N. norvegicus biases current stock
assessment methods. We propose that state-of-the-art stationary and mobile
robotic platforms endowed with innovative sensors and complemented with AI
tools could be used to count both animals and burrows systems in-situ, as well
as to provide key insights into burrowing behavior. Next, we illustrate how
multiparametric monitoring can be incorporated into assessments of
physiology and burrowing behavior. Finally, we develop a flowchart for the
appropriate treatment of multiparametric biological and environmental data
required to improve current stock assessment methods
Fungal peritonitis in Iranian children on continuous ambulatory peritoneal dialysis: a national experience.
INTRODUCTION. Fungal peritonitis (FP), causing catheter obstruction, dialysis failure, and peritoneal dysfunction, is a rare but serious complication of peritoneal dialysis. In this study, the frequency and risk factors of FP are evaluated in children who underwent peritoneal dialysis. MATERIALS AND METHODS. A retrospective multicenter study was performed at the 5 pediatric peritoneal dialysis centers in Iran from 1971 to 2006, and FP episodes among 93 children were reviewed. Risk ratios were calculated for the clinical and demographic variables to determine the risk factors of FP. RESULTS. Ninety-three children aged 39 months on average were included in study. Sixteen out of 155 episodes of peritonitis were fungi infections, all by Candida albicans. The risk of FP was higher in those with relapsing bacterial peritonitis (P = .009). Also, all of the patients had received antibiotics within the 1 month prior to the development of FP. Catheters were removed in all patients after 1 to 7 days of developing FP. Six out of 12 patients had catheter obstruction and peritoneal loss after the treatment and 5 died due to infection. CONCLUSIONS. Fungal peritonitis, accompanied by high morbidity and mortality in children should be reduced by prevention of bacterial peritonitis. Early removal of catheter after recognition of FP should be considered
Fungal peritonitis in Iranian children on continuous ambulatory peritoneal dialysis: a national experience.
INTRODUCTION. Fungal peritonitis (FP), causing catheter obstruction, dialysis failure, and peritoneal dysfunction, is a rare but serious complication of peritoneal dialysis. In this study, the frequency and risk factors of FP are evaluated in children who underwent peritoneal dialysis. MATERIALS AND METHODS. A retrospective multicenter study was performed at the 5 pediatric peritoneal dialysis centers in Iran from 1971 to 2006, and FP episodes among 93 children were reviewed. Risk ratios were calculated for the clinical and demographic variables to determine the risk factors of FP. RESULTS. Ninety-three children aged 39 months on average were included in study. Sixteen out of 155 episodes of peritonitis were fungi infections, all by Candida albicans. The risk of FP was higher in those with relapsing bacterial peritonitis (P = .009). Also, all of the patients had received antibiotics within the 1 month prior to the development of FP. Catheters were removed in all patients after 1 to 7 days of developing FP. Six out of 12 patients had catheter obstruction and peritoneal loss after the treatment and 5 died due to infection. CONCLUSIONS. Fungal peritonitis, accompanied by high morbidity and mortality in children should be reduced by prevention of bacterial peritonitis. Early removal of catheter after recognition of FP should be considered
Agreement of Bitewing and Digital Panoramic Radiographies in the Detection of Proximal Caries
Abstract:
Background & Aims: Conventional radiography is used for the diagnosis of problems such as dental caries and failure in root canal therapy. The diagnosis accuracy of conventional radiography is acceptable in the evaluation of anatomical and pathological structures. However, it seems that by using digital radiography we can obtain more information in this field. The aim of this study is to compare the diagnosis accuracy of bitewing radiography and digital panoramic imaging (filtered and unfiltered) in detection of proximal caries.
Methods: This was a descriptive-analytical study which has evaluated 56 files of patients who were referred to a private office in Qazvin, Iran. These patients had digital panoramic (with CD) and bitewing radiographies in their records. The presence of decay and depth of decay were evaluated at the basis of 5-scale and 4-scale measurements, respectively. After collecting the data, data were entered into SPSS and ANOVA and Kappa coefficient were used. Values of P < 0.05 were considered significant.
Results: The highest agreement in terms of presence or absence of caries based on location was obtained for bitewing (Kappa > 0.76), unfiltered panoramic, and filtered panoramic, respectively. General agreement between the two observers in terms of depth of caries was higher for panoramic views than bitewing radiography.
Conclusion: According to the results of this study digital panoramic imaging, in spite of its digital imaging which the manufacturer claims can increase diagnostic accuracy, cannot be as accurate as bitewing radiography in detection of proximal caries. Thus, bitewing radiography is always the best option for evaluation of proximal surfaces.
Keywords: Bitewing, Filtered panoramic, Unfiltered panoramic, Interproximal carie
Analysis of Effective Factors on Retinopathy Recognition in Patients with Type 2 Diabetes by Using Parametric Models and Cox model
Abstract
Introduction: One of the most complications of diabetes, diabetic retinopathy which is one of the leading causes of visual loss and causes blindness of more than 10000 people annually. The purpose of this study was to determine the effective factors on Retinopathy recognition in patients with type 2 diabetes.
Methods: In this prospective cohort study, 400 patients with type 2 diabetes without retinopathy which had referred to the Ophthalmology Clinic of Yazd Diabetes Research Center, Iran in 2008 were enrolled in the study and they were examined from Retinopathy until Feb 2013. For identification of effective factors on retinopathy recognition we used semi-parametric Cox model and parametric models, exponential, Weibull, Log-normal and Log- logistic.
Results: The use of aspirin 0.6 times (in Weibull model, Log-normal) and one times (in Cox model) increases the retinopathy recognition risk. In other words, it decreases the duration of retinopathy recognition in these persons. In this study the risk of recognition of diabetic retinopathy in the patients who had anemia is 1.4 times of patients which didn’t have these risk factors. Having anemia causes diabetic retinopathy recognition earlier. In this study it was observed that insulin caused a delay in the diagnosis of retinopathy and reduces the risk of diabetic retinopathy.
Conclusion: Blood sugar control, regular examination of the funds by an ophthalmologist in the early diagnosis of diabetes, control of aspirin use, diagnosis and treatment of anemia in patients with type 2 diabetes are recommended
Tele-operated ecological monitoring at the seafloor observatory (OBSEA)
Special issue 9th MARTECH: International Workshop on Marine Technology: 16-18 June 2021, Vigo, Spain.-- 1 page, 1 figureThe development of new cabled oceanographic observatories is becoming of extreme importance to monitor in real-time a continuously changing environment. In this context, a local coastal network of fxed and mobile videomonitoring platforms was created at the OBSEA (www.obsea.es; [1]) as European Multidisciplinary Seafoor and water column Observatory EMSO Testing-Site [2]. The cabled platform is located 4 km ofshore of Vilanova i la Geltrú coast (Barcelona, Spain), at a depth of 20 m. The observatory has been used to install a network of cameras including OBSEA fxed camera, plus a movable satellite tripod. Also, a mobile camera will be installed on an Internet Operated Vehicle (IOV), as a coastal crawler. These tele-operated vehicles are being used by marine scientists, to carry out multiparametric environmental studies (via the diversifed set of oceanographic and geochemical sensors) centered on faunal monitoring via imaging. As far as cabled seafoor observatories (and also OBSEA) are not able to move and their data collection capability is limited, it was decided to expand the monitoring capacity of the OBSEA, by connecting it to a new costal crawler. This crawler is a modifed prototype of the “Wally” platform series, which is operating at the Ocean Networks Canada (ONC; www.oceannetworks. ca) since 2010 [3]. This coastal crawler will be used to perform back and forth video transects between the fxed OBSEA camera and its satellite tripod camera (80 m away), to analyze the possible efect of environmental heterogeneity on the perceived fsh community abundance and composition. This will also allow scaling the biodiversity gathered data over a larger and more ecologicallyrepresentative area. In this scenario, we aim to present the technological design and specifcations of the modifed coastal crawler (Fig. 1). A mobile camera (1) in a glass sphere (rated for 3000 m depth) with 360° pan and 180° tilt operability has been installed, to allow the operator to perform SCUBA divers as visual census transects, by looking forward during transect progression, widening the visual feld with panoramic sweeps when needed. The tracks (2) are independent parts allowing to scale the inner part of the vehicle simply by mounting a broader main plait. The chains are made of rubber with embedded steel. Each track is driven by a powerful DC motor with a reduction gear of 989:1. The motor housings are pressure compensated by fuid flling. The junction cylinder (3) contents the driving electronics and an Ethernet switch to connect the camera and the control cylinder to the main communication cable. This housing can variate in material and dimensions to allow its use at diferent depths. The main cable (4) is a of special underwater Ethernet foating type to avoid problems like seabed abrasion and platform entanglement. A control cylinder (5) is used for controlling the crawler and the camera, providing power from the junction cylinder to supply motors. Finally, there are two 12V, 3W lights (6) that can turn on for flming at nightThis work is partially funded by Generalitat de Catalunya “Sistemas de Adquisición Remota de datos y Tratamiento de la Información en el Medio Marino” (SARTI-MAR)” 2017 SGR 371 and by the Spanish Ministry of Education and Science (MEC) with the project “Redes de sensores submarinos autónomos y cableados aplicados a la monitorización remota de indicadores biológicos” TEC2017-87861-R. Researchers want to acknowledge the support of the Associated Unit Tecnoterra composed by members of Universidad Politécnica de Cataluña (UPC) and the Consejo Superior de Investigaciones Científicas (CSIC). This work used the EGI infrastructure with the dedicated support of INFN-CATANIA-STACK. The crawler was provided by OceanLab of Jacobs University Bremen (L. Thomsen)Peer reviewe
Outcome of renal transplantation in children: A multi-center national report from Iran
The outcome of pediatric renal transplantation was previously reported by a single-center study at the year 2006. Therefore, we aimed to evaluate and report the characteristics and outcome of renal pediatric renal transplantation in a multi-center nationwide study. In this nationwide report, medical records of 907 children (�18 yr) with renal transplantation in eight major pediatric transplant centers of Iran were recorded. These 907 patients received a total of 922 transplants. All children who failed to follow-up were excluded. Rather than baseline characteristics, graft and patient outcomes were considered for survival analysis. For further analysis, they were divided into two groups: patients who had graft survival time more than 10 yr (n = 91) and the ones with graft survival time of equal or less than 10 yr (n = 831). Of 922 recipients, 515 (55.8) were boys and 407 (44.2) were girls with the mean age of 13.10 (s.d. = 3.54) yr. DGF and AR were occurred in 10 and 39.5 of the transplanted children, respectively. Transplantation year, dialyzing status before transplantation, DGF, and AR were significant enough to predict graft survival in cox regression model (overall model: p < 0.001). Nowadays, there is a successful live donor pediatric renal transplantation in Iran. Graft survival has improved in our recipients and now the graft survival rates are near to international standards. © 2011 John Wiley & Sons A/S
Nuclear actin: ancient clue to evolution in eukaryotes?
Until recently it was widely accepted that the dynamic cytoskeletal matrix is exclusive to the cytoplasm of eukaryotes, evolving before the emergence of the cell nucleus to enable phagocytosis, cell motility and the sophisticated functioning of the endomembrane system within the cytosol. The discovery of the existence of a prokaryotic cytoskeleton has changed this picture significantly. As a result, the idea has taken shape that the appearance of actin occurred in the very first cell; therefore, the emergence of microfilaments precedes that of the eukaryotic cytoskeleton. The discovery of nuclear actin opened new perspective on the field, suggesting that the nuclear activities of actin reflect the functions of primordial actin-like proteins. In this paper, we review the recent literature to explore the evolutionary origin of nuclear actin. We conclude that both ancient and eukaryotic features of the actin world can be detected in the nucleus today, which supports the idea that the cytoskeleton attained significant eukaryotic innovations before the tandem evolution of the cytoskeleton and nucleus occurred