Screening of some Naturally Isolated Microalgal Strains for Polyunsaturated Fatty Acids Production

Background and Purpose: Nowadays, polyunsaturated fatty acids (PUFAs) are playing a great role in human wellbeing and health improvement. A wide spectrum of biological, medical and health benefit effects ranging from cardiovascular, neuronal, anticancer and antioxidant have been reported from different PUFAs in human. Methodology: In this study, six different species of microalgae belonging to the chlorophyta and cyanobacteria phylum were isolated from soil and water samples collected from Persian Gulf. Their growth rate, biomass and lipid production and productivity and more importantly their ability to produce PUFAs was investigated. Results: The isolated species represented a great fatty acid profile including many different polyunsaturated fatty acids (PUFAs) ranging from 6-20 carbon atoms. S. obliquus and N. muscorum proven to have a better profile for PUFAs production, whilst C. vulgaris could be considered as a more robust strain to produce other fatty acid classes. Besides, C. vulgaris with its higher growth rates (0.39 d-1)and S. obliquus owing to its higher total lipid content (43.92%) seems more interesting strains for scale up studies. Conclusion: The obtained results demonstrated the great potential of naturally isolated strains of microalgae for PUFA production and provided some insights in next studies to explore more producing strains

Tiny Graph Neural Networks for Radio Resource Management

The surge in demand for efficient radio resource management has necessitated the development of sophisticated yet compact neural network architectures. In this paper, we introduce a novel approach to Graph Neural Networks (GNNs) tailored for radio resource management by presenting a new architecture: the Low Rank Message Passing Graph Neural Network (LR-MPGNN). The cornerstone of LR-MPGNN is the implementation of a low-rank approximation technique that substitutes the conventional linear layers with their low-rank counterparts. This innovative design significantly reduces the model size and the number of parameters. We evaluate the performance of the proposed LR-MPGNN model based on several key metrics: model size, number of parameters, weighted sum rate of the communication system, and the distribution of eigenvalues of weight matrices. Our extensive evaluations demonstrate that the LR-MPGNN model achieves a sixtyfold decrease in model size, and the number of model parameters can be reduced by up to 98%. Performance-wise, the LR-MPGNN demonstrates robustness with a marginal 2% reduction in the best-case scenario in the normalized weighted sum rate compared to the original MPGNN model. Additionally, the distribution of eigenvalues of the weight matrices in the LR-MPGNN model is more uniform and spans a wider range, suggesting a strategic redistribution of weights.Comment: Accepted as a full paper by the tinyML Research Symposium 202

Thermodynamics phase transition of Anti de Sitter Schwarzschild scalar-tensor-vector-Black Holes

Instead of scalar tensor gravity models which is applicable for description of cosmic inflation with unknown dark sector of matter/energy, at presentense there are presented different alternative scalar tensor vector gravities where meaningful dynamical vector fields can support cosmic inflation well without to use dark matter/energy concept. One of these gravity models was presented by Moffat which its modified Schwarzschild black hole solution is used to study thermodynamic phase transition in presence of the AdS space pressure in this article. To do so we obtained an equation of state which asymptotically reaches to equation of state of ideal gas for large black holes but for small scale black holes we obtained a critical point at phase space where the black hole can be exhibit with a phase transition at processes of isotherm and isobaric. By looking at diagrams of the Gibbs free energy and the heat capacity at constant pressure which are plotted versus the temperature and the specific volume one can see an inflection point which means that the phase transition is type of second order. In fact there is small to large phase transition for the black hole which is equivalent to the Van der Waals liquid-gas phase transition in ordinary thermodynamic systems. The phase transition is happened below the critical point in phase space when the gravitational charge of the black hole is equal to its mass.Comment: 21 pages, 4 figure

Assessing attitudes of citizens of Qazvin city towards Afghan Refugees via Cybernetics

The aim of the present study is to assess attitudes of citizens of Qazvin City towards Afghan migrants using the factor analysis technique and the Bogardus Social Distance Scale. The data were collected via a questionnaire distributed among a sample size as 384 participants. Then, the collected data were analyzed via SPSS-23 and the factor analysis technique. As a result, 30 indices were summarized by factor analysis and reduced into 7 factors presented in combinatorial meaningful factors. The contribution of each factor affecting the attitudes of citizens of Qazvin City towards Afghan refugees using the mentioned technique. The research findings indicated that those 7 factors generally explain 60.21% of the citizens’ attitudes towards Afghan migrants. The results obtained from the Bogardus Social Distance Scale showed that citizens of Qazvin City have no positive attitudes towards Afghans with the mean scores of negative answers with 77.66%. This issue indicates a great social distance between Afghan refugees and the research population.

Knowledge, attitudes and behavioral intentions of agricultural professionals toward genetically modified (GM) foods: a case study in Southwest Iran

While there has been a number of consumers' studies looking at factors that influence individuals' attitudes and behavior toward GM foods, few studies have considered agricultural professionals' intentions in this regard. This study illuminates agricultural professionals' insights toward GM foods in Southwest Iran. A random sample of 262 respondents was studied. The results indicated that the majority of the respondents had little knowledge about GM foods. They perceived few benefits or risks of GM foods. Their perceived benefits and trust in individuals and institutions had positive impacts on the behavioral intentions of the agricultural professionals. The results also revealed that the low knowledge level of the respondents had a negative impact on the behavioral intentions toward GM foods. This state of affairs is problematic, either GM foods have serious problems or the knowledge conveyed to the Iranian agricultural experts is inappropriate. We recommend a well defined communication strategy to provide information in such a way that allows individuals to feel adequately informed about GM foods. Furthermore, the development of trust and knowledge regarding GM foods can be greater when risk analysis frameworks are transparent, risk assessment methodologies are objective, all stakeholders are engaged in the risk management process, and risk communication focuses on consumers

Snoring and Attention deficit hyperactivity disorder in Children in Qom, Iran

BACKGROUND: Attention deficit hyperactivity disorder (ADHD) is an important and common problem in children (4-12%) which affects their daily activities and quality of life. About 1-2% of children suffer from sleep apnea with a common symptom of snoring which might cause behavioral disorders due to the lower quality of sleep. In the present study, we aim to determine the association between snoring and ADHD. METHODS: In this case control study, we enrolled 100 children of 2-12 years who snored as the case group and 100 healthy peers as the control group. Snoring and behavioral problems were assessed by the standard questionnaires of the Berlin Questionnaire and Behavioral Disorder Questionnaire [DSM-IV], respectively. RESULTS: The mean age, height, and weight of children were 6.81 years, 116.11 cm, and 25.39 Kg, respectively. In addition, 53.5% of participants of both groups were boys. A significant relationship was found between snoring and ADHD and its subtypes (P < 0.001). CONCLUSION: Increasing the information of parents and colleagues on the association of snoring with behavioral disorders might assist in early diagnosis and treatment

The Effect of miR-372 on Genome Instability in MKN-45 Cell Line

Background: Gastric cancer is one of the most common cancers in the world and the second leading cause of cancer mortality in humans. MicroRNAs are a group of endogenous RNA, small non-coding nucleotides in length of 21-23. Overexpression of miR-372 acts as an oncomir in various types of cancer via down-regulation of its target, LATS2. Down-regulation of LATS2 leads to the loss of cell cycle regulation, apoptosis inhibition, and increased proliferation rate of the cells. Methods: In this study, we increased the expression of miR-372 with lentivirus transduction inside the GC cell line MKN-45. After selection of positive cells, miR-372 and LATS2 expression levels were measured through real-time polymerase chain reaction (RT-PCR) assay. Cytochalasin B blocked (MN) assay was done to verify the presence or absence of MN for comparing genomic instability in treated cells compared to the controls. Findings: In the treated cells, compared with the controls, the amount of miR-372 expression significantly increased. Fold changes in 7, 14 and 21 days after the transduction were 7.85, 50.22 and 114.68, respectively (P = 0.030). In contrast to the control cells, the fold changes of LATS2 expression in these days were 0.39, 0.29 and 0.15, respectively (P = 0. 016). In addition, compared with control cells, the genomic instability of treated cells increased significantly (P < 0.001). Conclusion: These results indicate that in MKN-45 cell line, LATS2 is a target of miR-372. LATS2 is down-regulated with increased expression of miR-372. Reduce LATS2, leads to genomic instability during cell division and creates micronuclei and hence may be an important tumor suppressor