192 results on '"R. Roshan"'
Search Results
2. The Impact of Guided Parent Delivered Cognitive Behavioral Therapy upon Anxiety in Children
- Author
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N. Fayyazi, F. Dehghani Arani, Ph.D., H. Farahani, Ph.D., R. Roshan Chelsi, Ph.D., and G. Zahed, Ph.D.
- Subjects
anxiety ,cognitive behavioral therapy ,parents ,children ,Special aspects of education ,LC8-6691 - Abstract
Anxiety disorder is a prevailing mental condition among children and it leads to many problems in various aspects of their lives. This research was conducted to examine the impact of guided parent delivered CBT (GPDCBT) upon 7- to 12-year-old children with anxiety disorders in Tehran. This quasi-experimental research had a pretest-posttest control group design. In order to draw the sample, purposive sampling method was used and 66 children with various types of anxiety disorders who had been referred to Mofid Hospital Clinic in Tehran were chosen. After filling out the consent form by the mothers, the subjects were randomly assigned to two experimental and control groups. At the pretest stage, all participants were assessed using Spence Children’s Anxiety Scale (1997). In the next step, the mothers in experimental group received GPDCBT in four face-to-face 1-hour sessions and four 20-minute telephone sessions and then the children received home-based intervention by their mothers. During this time, the control group was assigned to the waiting list and did not receive any intervention. At the end of the one-month treatment period and at the post-test stage, both groups were assessed again by the Spence Scale. Analysis of Covariance revealed that the mean of anxiety in the experimental group decreased significantly in comparison with the control group (F=25.11, p ≡ 0.001). The findings are indicative of the feasibility of guided parent delivered CBT for anxiety reduction in children.
- Published
- 2023
3. Experimental study on properties of mechanical resistance of polyamide in clay soil
- Author
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S.V. Sivapriya, J. Gokul Krishnan, Bijivemula Sruthi Reddy, R. Roshan, and Syed Mohammed
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ground improvement ,expansive soil ,pa-12 ,atterberg’s limit ,unconfined compressive strength ,durability ,Technology ,Engineering (General). Civil engineering (General) ,TA1-2040 - Abstract
The presence of clay soil causes problems at the base of the structure: it swells when wet and shrinks when dry, which provides a reduction in the resistance to cutting of the soil. Plastic waste in the form of polyamide powder (PA-12) from the 3D printing industry can be used to improve the mechanical properties of the soil. This experimental study is an attempt to combine these two objectives of stabilizing the soil by using waste PA-12. The mechanical and shear resistant properties gave us confidence in choosing PA-12 as a stabilizer in clay soils, making them composite soils.
- Published
- 2021
- Full Text
- View/download PDF
4. Effectiveness of Powell\'s Cognitive Rehabilitation with Neurofeedback in Improving Executive Functions, Memory, and Attention to Veterans with Post-Traumatic Stress Disorder
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M. Sahragard, A. Alipour, H. Zare, R. Roshan, and M. Moodi
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stress disorders ,post-traumatic ,rehabilitation ,neurofeedback ,executive functions ,memory ,attention ,Public aspects of medicine ,RA1-1270 ,Military Science - Abstract
Aims: PTSD is a set of continuous and frequent symptoms that occur after experiencing or observing a traumatic event, such as being involved in a war. The aim of this study was to evaluate the effectiveness of Powellchr('39')s cognitive rehabilitation with neurofeedback in improving executive functions, memory, and attention to veterans with post-traumatic stress disorder. Material & Methods: This semi-experimental study, with pre-test post-test design, was carried out on 24 veterans with post-traumatic stress disorder in two experimental and control groups. Powellchr('39')s cognitive rehabilitation treatment with neurofeedback was performed for 12 sessions and three months for the experimental group. For conducting the study, PSSI test, Wisconsin Card Test, Stroop test, and working memory test were used. Data were analyzed using univariate covariance analysis and SPSS 24. Finding: By controlling the pre-test effects, there was a significant difference between the experimental and control groups in terms of overall score of executive functions, memory and attention (p=0.001). Conclusion: Powellchr('39')s cognitive rehabilitation treatment with neurofeedback is effective on improving executive functions, memory and attention of veterans with post-traumatic stress disorder.
- Published
- 2018
5. The Role of Big Five Personality Factors and Defense Mechanisms in Predicting Quality of Life in Sexually Dysfunctional Female Patients
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S. salary, R. Roshan, and M. moghaddathin
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big five personality factors ,defense mechanisms ,quality of life ,sexual dysfunctional disorder. ,Psychology ,BF1-990 ,Social Sciences ,Social sciences (General) ,H1-99 - Abstract
Sexual dysfunction can lead to behavioral problems and reduction in a person's quality of life. In 50 % of patients with personality disorders, there is also sexual dysfunction. Psychoanalysis approach attributes the cause of sexual dysfunction to a kind of fundamental anxiety as well as the use of immature mechanisms in these patients. The purpose of this study was to investigate the role of big five personality traits and defensive mechanisms in predicting these patients' quality of life. Statistical sample of this research included 80 women attending sexual health and family clinics of Shahed University using accessible sampling during 2010 and 2011. These subjects were given the Neo Personality Inventory Traits, Defensive Mechanisms, and the World Health organization Quality of Life Questionnaires to answer. The findings showed that personality traits could predict the quality of life in woman with sexual dysfunction. Moreover, among those five personality traits, neuroticism (:./24 P=./04) and conscientiousness(:./31 P=./03) were able to predict the quality of life while predictability rate of both factors was 37% of variance on the whole (p=0/05). Based on regression analysis, there was a significant relationship between the quality of life and defensive mechanisms so that using more mature defensive mechanisms (:./37 P=./006) and immature defensive mechanisms (:-./31 P= ./02) could significantly predict quality of life (p=0/0001). Also, neurotic defensive mechanisms were not significant predictors of these women' quality of life. (;./04 P=./78).
- Published
- 2015
6. Marital Conflict, Marital Satisfaction, and Sexual Satisfaction: Comparison of Women with Relative Marriage and Women with Non-relative Marriage
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R. Amrelahi, R. Roshan Chesly, M.R. Shairi, and A. Nik Azin
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Marital conflict ,Marital satisfaction ,Sexual satisfaction ,Relative marriage. ,Psychology ,BF1-990 - Abstract
The purpose of this research is determination of differences in marital conflict, marital satisfaction, and sexual satisfaction between women with relative marriage and non-relative marriage. For this, 191 married women among nurses (100 people with non-relative marriage and 91 persons with relative marriage) employed in Tehran hospitals were selected by cluster sampling and Enrich marital satisfaction, marital conflicts, and sexual satisfaction questionnaires were conducted. Results of single- and multi-variable variance analysis showed meaningful differences between two groups in marital satisfaction variables and their aspects (except sexual relation), marital conflicts and their aspects, and sexual satisfaction. Comparison of means indicated that women with non-relative marriage have higher marital and sexual satisfaction and lower marital conflicts than women with relative marriage. In general, the research results showed that women with non-relative marriage have more satisfying relation in comparison with the ones with relative marriage.
- Published
- 2013
7. The comparison of Anger and Sense of Guilt in Individuals with Major Depres-sion Disorder (MDD) and Post Trau-matic Stress Disorder (PTSD) with the Normal people
- Author
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M. Rajabi, R. Roshan, and H.R. Jamilian
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Major Depression Disorder ,Post Traumatic Stress Disorder ,Anger ,Sense of guilt ,Psychology ,BF1-990 - Abstract
The aim of this study is comparison of anger and sense of guilt in people with Major Depression Disorder (MDD) and Post Traumatic Stress Dis-order (PTSD) with the normal people. The statistical population of this research includes all people with Major Depression Disorder (MDD) and Post Traumatic Stress Disorder (PTSD) who have come to Arak psy-chology health centers in 1387. Statistical population of normal people includes all staffs and employees in Arak psychology health centers. Sample of this research contains 30 people with Major Depression Dis-order (MDD), 30 persons with Post Traumatic Stress Disorder (PTSD), and 30 normal people as comparison group (totally 90 people). The in-struments were the State and Trait Anger Expression Inventory (STAXI-2) and Test Of Self – Conscious Affect - 3(TOSCA 3) questionnaires. The data of the all questionnaires were analyzed with analysis the one way Variance method using SPSS software. The taken results of this re-search showed that there is a difference between criterion of anger in people with PTSD and MDD in comparison with the normal people and the difference was significant in all the 3 groups (P 0 . 001). But there were some significant differences be-tween people of PTSD and normal people as well as between people of MDD and normal people (P
- Published
- 2013
8. Combined Pulmonary Fibrosis and Emphysema in a welder
- Author
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R. Roshan, M. Gupta, R. Kulshrestha, B. Menon, and S.K. Chhabra
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CPFE syndrome ,Interstitial Pulmonary Siderofibrosis ,Welding ,High resolution computed tomography ,Transbronchial lung biopsy. ,Medicine - Abstract
Combined pulmonary fibrosis and emphysema (CPFE) syndrome is an uncommon entity characterised by emphysema of the upper lobes and diffuse fibrosis of the lower lobes and carries a bad prognosis with the onset of pulmonary hypertension. Lung involvement due to exposures suffered by welders is generally considered benign though, rarely, a diffuse interstitial fibrotic disease has been reported. CPFE syndrome has however never been reported in welders. A 65-year-old man, welder by occupation and an ex-smoker, presented with progressive exertional dyspnoea associated with dry cough noticed for the last four months. On examination, there was mild tachypnea, clubbing and bilateral basal velcro crepitations on chest auscultation. Lung function test revealed mild mixed ventilatory impairment with severe diffusion defect. HRCT chest showed bilateral upper lobe emphysema and diffuse interstitial fibrosis in the lower lobes. Transbronchial lung biopsy revealed interstitial fibrosis, chronic inflammation and iron deposits. A diagnosis of combined pulmonary fibrosis with emphysema (CPFE) with interstitial pulmonary siderofibrosis (IPS) was established. A review of literature did not show any other report of a similar nature.
- Published
- 2015
- Full Text
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9. The Relationship between Religious Beliefs and Emotional Intelligence (EQ) in High School Students
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R. Abbasi, and R. Roshan,
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Religious beliefs ,Emotional Intelligence Quantity (EQ) ,Self-awareness ,Self-management ,Social awareness ,Relationship-management ,Psychology ,BF1-990 - Abstract
This paper investigates the relationship between religious beliefs and emotional intelligence in male high school students. The sample consisted of 110 male students studying in Karaj high schools. The subjects were selected through cluster sampling “Observing Religious Tasks and Obligations” and “Brad berry & Greaves Emotional Intelligence Appraisal” inventories were used to collect the data. The results indicated that there is a positive significant relationship between religious beliefs and EQ (p
- Published
- 2010
10. The Study of the Validity and Reliability of Hardiness Scale for University Students
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R. Roshan, and R. Shakeri,
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Hardiness ,Control ,Commitment ,Challenge ,Validity ,Reliability ,University students ,Psychology ,BF1-990 - Abstract
The objective of this study was to evaluate the psychometric properties of “Hardiness” scale for university students. The instrument used was Lang and Goulet hardiness scale, translated from English into Persian by using back-translation technique. The “Hardiness” scale for university (Shahed, Tehran & Beheshti). Factor analysis revealed three factors (control, commitment, and challenge) explained 30% of the variance. For all items of this questionnaire construct validity was (r=0.64), Internal consistency coefficient was obtained in three ways (cronbach’s alpha=0.82), Test=retest reliability was r=0.71) and Split-half reliability was r=0.76). The results indicated acceptable validity and reliability of the scale as a whole and for subscales. These preliminary results provide support for using LGHS to measure hardiness levels in Iranian university students and can be used to assess the hardiness of other populations.
- Published
- 2010
11. The Validity and Reliability of \'Grief Experience Questionnaire\' in an Iranian Sample
- Author
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S. Mehdipour, Sh. Shahidi, R. Roshan, and M. Dehghani
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Grief experience questionnaire ,Validity ,Reliability ,Psychology ,BF1-990 - Abstract
The loss of a darling or an important person in an individual's life is an event that always leads to grief in the close relatives of the deceased. Grief has comprehensive effects on the bereaved. The measurement of grief depends on the availability of appropriate tools. "Grief Experience Questionnaire" (GEQ) was designed by Bart and Scot (1998) to measure grief reactions. After preparing the scale, the researchers measured the validity and the reliability of this questionnaire in a group of students who had experienced grief. 348 participants were randomly selected for the study the investigation of main components confirmed the existence of seven factors and thirty four items. These factors had acceptable internal consistency (coefficients of Cronbach's Alpha were between 0.86 and 0.40). Moreover, the factors of this questionnaire revealed an appropriate convergent reliability for the two subscales of depression and somatization.GHQ-28 (p≤0.01) and (p≤0.01) SCL-25. A score pattern for GEQ was also obtained for the two different sexes.
- Published
- 2009
12. An Investigation of Reliability and Validity of the Third Version of
- Author
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R. Roshan Chesli, M. Atrifard, and S. Noori Moghaddam
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Test of Self-Conscious Affect(TOSCA-3) ,Validity ,Reliability ,Psychology ,BF1-990 - Abstract
This research aimed to explore the reliability and validity of the TOSCA-3. To this aim, 404 students were randomly selected among Shahed University Students. All participants took the test. The reliability of this scale was determined by internal consistency (Cronbach Alfa) and the mean inter- item. Correlation of TOSCA-3 was determined for a randomly sellected sample composed of 70 students. Also, test- retest stability of TOSCA-3 (within a week period) was studied. In order to study the construct validity of TOSCA-3, Pearsonian product-moment correlation between the scores of TOSCA-3 and the GHQ-28 subscales was determined for a randomly selected sample compased of 56 students for the same university. Results showed appropriate construct validity and reliability for the three subscales of "Shame", "guilt" and "externalization", as well as appropriate relaiability for "in difference". "Alfa Pride", and "Beta Pride". Further studies using different methods and tools for determining validity and reliability of these subscales are suggested.
- Published
- 2007
13. The Study of Value Hierarchies of Shahed University Students During 1998-2001
- Author
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A.A. Noorbala, R. Roshan, S. Fagihzadeh, R. Shakeri, and R. Mohammadsalehi
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Value Hierarchies ,Students ,Theoretical value ,Religious value ,Social value ,Economic value ,Art value and Political value ,Psychology ,BF1-990 - Abstract
This study was aimed to consider students value hierarchies. To this aim values of shahed university students was reviewed in a descriptive design. The students attended in 1998_2001 were considered as statistical universe and then separate research were done for considering of value hierarchies of the said students , based on the year of attendance. In other words, the statistical universe was made of the whole students of the attendance year in the university and the sample was selected among them, who filled research questionnaires. After 2 years, in the second stage, the research questionnaires was again completed by the same students. This method was repeated for all samples who attended during 1998-2001. In this stage questionnaire of Alport , Vernon & Lindzey, in which, values system was in the form of hierarchy, were used which included Theoretical, Religious, Social, Economic, Art and Political values. Results showed that the religious and social values were in the first and second positions in students value hierarchies and the art value was the last one. The comparison of students values throughout research stages revealed that the religious and especially political value were decreased in the second year of the study but religious value was hold as the first one. Despite displacement of other values, no significant differences were found during the study. Meanwhile the role of individual and social variables like gender, marital status, the place of family residence, university attendance quota and the faculty of the students, were studied and these findings are discussed.
- Published
- 2007
14. Investigating Psychometric Properties of 'NEO-Five Factor Inventory' (NEO-FFI)
- Author
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R. Roshan Chesly, M.R. Shaeeri, M. Atrifard, A. Nikkhah, B. Ghaem Maghami, and A. Rahimierad
- Subjects
“NEO-Five Factor Inventory” ,(NEO-FFI) ,Validity ,Reliability ,Psychology ,BF1-990 - Abstract
The major aim of this research was to investigate psychometric properties of “NEO-Five Factor Inventory” (NEO-FFI). To this aim, after doing preliminary stages and resolving possible problems, the exploration of this scale was conducted in two studies: in the first study, in order to assess reliability using internal consistency, 604 undergraduate students of Tehran, Amirkabir and Shahed Universities (334= female and 270= male) with average age of 21.8 (sd=2.49) were selected by available sampling method. Students completed NEO-FFI. Results of this study indicated that Neuroticism and Conscientiousness had acceptable internal consistency in all subjects (higher than 0.70). Of course, Cronbach Alfa of Extroversion and Agreeableness were higher than suggested level for group comparisons (higher than 0.5). Therefore, only openness lacked acceptable internal consistency. In the second study, in order to assess construct validity of NEO-FFI, Pearson’s product-moment correlation was calculated for five factors of NEO-FFI and 9 facets of “Symptom Checklist-90- Revised” (SCL-90-R). Results of these analyses indicated that Neuroticism with all facets of SCL-90-R, Conscientiousness with all facets of SCL-90-R with the exception of paranoid thinking (Bonferroni correction not considered) and obsessive-compulsive facets (Bonferroni correction considered), Agreeableness and Extroversion with 3 and 7 facets of SCL-90-R (Bonferroni correction considered) had significant correlation. Openness did not show any significant correlation with facets of SCL-90-R. Besides, among these factors, only the relationships of Neuroticism with facets of SCL-90-R was a significant positive correlation and the remaining factors had not significant correlation or had significant negative correlation with facets of SCL-90-R. In conclusion, results of this study with respect to literature review about investigating psychometric properties of NEO-FFI in non-English cultures suggest need to investigate factor structure of this in Iranian population.
- Published
- 2006
15. The Relationship of the Meta-Cognitive Beliefs with Social Anxiety Symptoms (Avoidance, Fear and Physiological Arousal) in Non-Clinical Population
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M. Hassanvand Amouzadeh and R. Roshan Chesly
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meta-cognitive beliefs ,avoidance ,fear ,Psychology ,BF1-990 ,Social Sciences ,Social sciences (General) ,H1-99 - Abstract
The aim of this study was to investigate the relationship of meta-cognitive beliefs with social anxiety symptoms in non-clinical population. The sample consisted of 300 (166 females and 134 males) Ilam University students who selected by cluster sampling method. The participants completed the Meta-Cognations Questionnaire-30 (MCQ-30) and Social Phobia Inventory (SPIN). The results showed that meta-cognitive beliefs were positively correlated with social anxiety symptoms (P
- Published
- 2014
16. Investigation of Psychometric Features of Quality of Life Questionnaire (QLQ)
- Author
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M.R. Naeeniyan, M.R. Shaeeri, R. Roshan, K. Mohammadi, and Z. Khollami
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Quality of life questionnaire (QLQ) ,Reliability ,Norm selection ,Psychology ,BF1-990 - Abstract
The aim of present study was to investigate some psychometric features of quality of life questionnaire (Q L Q). QLQ developed by Evance and Cope in 1989, for assessing adult quality of life. It includes 16 dimensions and totally consisting of 192 questions. The Major assumption of the questionnaire is that the behavior of adults in response to particular aspects of environment could be representative of his/ her quality of life. Thus QLQ has tried to identify a multidimensional measure of an individual's behavior .In this study 400 teachers (200 men, 200 women) were selected through stepwise clustering procedure from different schools of Tehran north south east, and west regions. Obtained results showed appropriate Chronbach Alpha for total as well as for the 1st and 2nd parts of questionnaire. The reliability of the test and correlation between the two halves of the questionnaire was also adequate. Test – retest coefficient of correlation for all the 16 sub-scales including QLQ were positive & meaningful. On the other hand, following author's view, each and every item in a sub-scale having more correlation with sub-scales other than its own was omitted, and finally 163 items remained in the questionnaire. Comparing results between men and women as well as Iranian and non-Iranian samples indicating a significant difference for some sub-scales, although the difference between Iranians and non-Iranians for thirteen sub-scales are more obvious. Norm selection for Iranians was done on the basis of original items in the questionnaire and more over, omitted items are presented in related tables.
- Published
- 2005
17. The Effect of Peer Consoler in Increasing Non-native Freshman Students\' Mental Health, Adjustment, and Academic Achievement
- Author
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R. Roshan, M.R. Sha'eeri, and H. Yaghoobi
- Subjects
Peer Consoler ,Mental Health ,Adjustment ,Student ,Academic Achievement ,Psychology ,BF1-990 - Abstract
The present study aimed to investigate the role of peer – consoler in freshman student's mental health and adjustment. To this aim, first, 15 senior students were trained. Then a control and an experimental group of female freshman students were formed. All subjects filled out general health questionnaire (GHQ) and Baro adjustment questionnaire before they got in touch with peer consolers. While the experimental group was supervised by the peer consoler, the control group had no peer consoler. After 9 months and after continuing trainings all subjects took the same tests again so as to determine the stability of peer counseling effect.The results of mixed in – out group, and Anova showed that in most sub scales of general health and adjustment, there was a significant difference between experimental and control groups and this difference remained stable throughout 9 months of experiment
- Published
- 2005
18. The Effect of Storage Conditions on Dimensional Changes of Acrylic Post-Core Patterns
- Author
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J. Ghanbarzadeh, MR. Sabooni, and R. Roshan-Nejad
- Subjects
Dimensional changes ,Post ,Duralay ,Dentistry ,RK1-715 - Abstract
Objective: The purpose of this study was to evaluate and compare the effect of storage time and conditions on dimensional stability of acrylic patterns. Materials and Methods: In this in vitro study, a cylindrical shaped metallic post-core was fabricated. Impressions were made from this metallic model and 30 samples were prepared with Duralay acrylic resin. The specimens were divided into three groups of ten. Groups A, B and C were stored in dry atmosphere at 25°C; 100% humidity at 25°C; and water placed in the refrigerator at 4°C, respectively. In each sample post length, post diameter and core diameter were measured at baseline, 24 hours and 48 hours after storage. All measurements were performed in an optical measurement device. Data were analyzed using the Rank regression test. Results: The type of dimensional changes seen in this study was shrinkage. A significant difference in post diameter was found between group B and the other two groups (P=0.001). Storing time significantly affected post diameter (P
- Published
- 2007
19. Harnessing ZnCr2O4/g-C3N4 nanosheet heterojunction for enhanced photocatalytic degradation of rhodamine B and ciprofloxacin
- Author
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Chandrapal, R. Roshan, Bharathi, K., Bakiyaraj, G., Bharathkumar, S., Priyajanani, Y., Manivannan, S., Archana, J., and Navaneethan, M.
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- 2024
- Full Text
- View/download PDF
20. Hydrothermally synthesized strontium-modified ZnO hierarchical nanostructured photocatalyst for second-generation fluoroquinolone degradation
- Author
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Chandrapal, R. Roshan, Bharathkumar, S., Bakiyaraj, G., Ganesh, V., Archana, J., and Navaneethan, M.
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- 2022
- Full Text
- View/download PDF
21. Hydrothermally synthesized strontium-modified ZnO hierarchical nanostructured photocatalyst for second-generation fluoroquinolone degradation
- Author
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R. Roshan Chandrapal, S. Bharathkumar, G. Bakiyaraj, V. Ganesh, J. Archana, and M. Navaneethan
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Materials Science (miscellaneous) ,Cell Biology ,Electrical and Electronic Engineering ,Physical and Theoretical Chemistry ,Atomic and Molecular Physics, and Optics ,Biotechnology - Published
- 2022
22. Sunlight assisted photocatalytic decomposition of protonated-g-C3N4/LaCoO3 nanocomposites for environmental remediation
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K. Sathiyamoorthy, S. Bharathkumar, R. Roshan Chandrapal, S. Harish, and M. Navaneethan
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Electrical and Electronic Engineering ,Condensed Matter Physics ,Atomic and Molecular Physics, and Optics ,Electronic, Optical and Magnetic Materials - Published
- 2022
23. Intranasal Carbetocin Reduces Hyperphagia, Anxiousness, and Distress in Prader-Willi Syndrome: CARE-PWS Phase 3 Trial
- Author
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Elizabeth Roof, Cheri L Deal, Shawn E McCandless, Ronald L Cowan, Jennifer L Miller, Jill K Hamilton, Elizabeth R Roeder, Shana E McCormack, Tamanna R Roshan Lal, Hussein D Abdul-Latif, Andrea M Haqq, Kathryn S Obrynba, Laura C Torchen, Alaina P Vidmar, David H Viskochil, Jean-Pierre Chanoine, Carol K L Lam, Melinda J Pierce, Laurel L Williams, Lynne M Bird, Merlin G Butler, Diane E Jensen, Susan E Myers, Oliver J Oatman, Charumathi Baskaran, Laura J Chalmers, Cary Fu, Nathalie Alos, Scott D McLean, Ajay Shah, Barbara Y Whitman, Brent A Blumenstein, Sarah F Leonard, Jessica P Ernest, Joseph W Cormier, Sara P Cotter, and Davis C Ryman
- Subjects
Endocrinology ,Endocrinology, Diabetes and Metabolism ,Biochemistry (medical) ,Clinical Biochemistry ,Biochemistry - Abstract
Context Prader-Willi syndrome (PWS) is a rare genetic disorder characterized by endocrine and neuropsychiatric problems including hyperphagia, anxiousness, and distress. Intranasal carbetocin, an oxytocin analog, was investigated as a selective oxytocin replacement therapy. Objective To evaluate safety and efficacy of intranasal carbetocin in PWS. Design Randomized, double-blind, placebo-controlled phase 3 trial with long-term follow-up. Setting Twenty-four ambulatory clinics at academic medical centers. Participants A total of 130 participants with PWS aged 7 to 18 years. Interventions Participants were randomized to 9.6 mg/dose carbetocin, 3.2 mg/dose carbetocin, or placebo 3 times daily during an 8-week placebo-controlled period (PCP). During a subsequent 56-week long-term follow-up period, placebo participants were randomly assigned to 9.6 mg or 3.2 mg carbetocin, with carbetocin participants continuing at their previous dose. Main outcome measures Primary endpoints assessed change in hyperphagia (Hyperphagia Questionnaire for Clinical Trials [HQ-CT]) and obsessive-compulsive symptoms (Children's Yale-Brown Obsessive-Compulsive Scale [CY-BOCS]) during the PCP for 9.6 mg vs placebo, and the first secondary endpoints assessed these same outcomes for 3.2 mg vs placebo. Additional secondary endpoints included assessments of anxiousness and distress behaviors (PWS Anxiousness and Distress Behaviors Questionnaire [PADQ]) and clinical global impression of change (CGI-C). Results Because of onset of the COVID-19 pandemic, enrollment was stopped prematurely. The primary endpoints showed numeric improvements in both HQ-CT and CY-BOCS which were not statistically significant; however, the 3.2-mg arm showed nominally significant improvements in HQ-CT, PADQ, and CGI-C scores vs placebo. Improvements were sustained in the long-term follow-up period. The most common adverse event during the PCP was mild to moderate flushing. Conclusions Carbetocin was well tolerated, and the 3.2-mg dose was associated with clinically meaningful improvements in hyperphagia and anxiousness and distress behaviors in participants with PWS. Clinical Trials Registration Number NCT03649477
- Published
- 2023
24. Structure, Texture, and Substructure of Foil in Sequential Rolling Steps of Cu–36.4 at % Pd Alloy
- Author
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S. V. Gorbunov, T. N. Il’inova, V. M. Ievlev, Konstantin Solntsev, A. I. Dontsov, S. V. Kannykin, N. R. Roshan, and A. S. Prizhimov
- Subjects
Inorganic Chemistry ,Materials science ,General Chemical Engineering ,Alloy ,Materials Chemistry ,Metals and Alloys ,engineering ,Substructure ,Texture (crystalline) ,engineering.material ,Composite material ,FOIL method - Published
- 2021
25. Dependence of the Atomic Structure of Solid Solutions in the Pd-Cu System Ordered According to the B2 Type on the Composition
- Author
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Valentin M. Ievlev, Konstantin A. Solntsev, Alexander L. Vasiliev, Semen V. Gorbunov, Alexey I. Dontsov, Nataliya R. Roshan, Sergey V. Kannykin, Alexey V. Ovcharov, and Bugakov V. Alexander
- Subjects
Process Chemistry and Technology ,Chemical Engineering (miscellaneous) ,Bioengineering ,solid solution ,Pd–Cu system ,ordering ,structure ,hydrogen permeability - Abstract
Owing to exceptionally high selectivity, membranes based on palladium alloys are widely used for obtaining high-purity hydrogen. An important issue for providing high hydrogen permeability of the membranes is to form the required phase composition. The structural organization of the solid solutions consisting of Cu–36.4 at .% Pd and Cu–50 at .% Pd were studied by X-ray diffraction (XRD), electron diffraction (ED), high-resolution transmission electron microscopy (HRTEM) and energy dispersive X-ray spectroscopy (EDXS). It was found that the former composition can be ordered in the temperature range of 300–400 °C and in the heating (up to 800 °C)–cooling cycle. In the presence of excess Cu atoms (27.2%), this structure can be represented by CsCl type structural units (β-phase) and distributed body center cubic (BCC) copper structural units in the corresponding concentration dose. The formation of a single crystal ordered phase within the mosaic blocks of the disordered phase was established. Experimental evidence was obtained for the separation of the α-phase solid solution in the elemental composition; the very low rate of ordering inherent in this system was attributed to this effect. The hydrogen permeability of a foil of the equiatomic composition was described.
- Published
- 2022
- Full Text
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26. The Structure Stability of Metal Diffusion Membrane-Filters in the Processes of Hydrogen Absorption/Desorption
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Olga V. Akimova, Roman D. Svetogorov, Alexey V. Ovcharov, and Nataliya R. Roshan
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Process Chemistry and Technology ,Chemical Engineering (miscellaneous) ,Filtration and Separation ,X-ray diffraction ,palladium—lead membrane alloys ,SEM-EDXS analysis ,hydrogen - Abstract
The evolution of a nanostructured state of palladium—lead membrane alloys during their interaction with hydrogen was studied using precision X-ray diffraction with synchrotron radiation (SR) and scanning electron microscopy (SEM) with energy-dispersive X-ray spectroscopy (EDXS). The importance of this topic is due to the need and demand for improving the performance characteristics of dense metal diffusion filters for high purity hydrogen separation processes. Palladium-based membrane filters with lead concentrations of 5 and 20 wt.% were prepared via electric arc melting from high purity metals (99.95%). The thickness of the filters was 50 μm. Hydrogenation was carried out from a gas medium at 573 K and the pressure of 16 atm. within 150 min. The focus of the study is on the structural state of diffusion filter membranes depending on the content of the palladium-alloying element—lead—and on analysis of the substructure of alloys before and 5300 h relaxation after hydrogenation is carried out. Specific features of the surface morphology and the structure of the membrane filters depending on the concentration of lead in the alloys are determined. The formation and development of deformation processes in metal systems upon the hydrogenation is shown. The establishment of peculiarities of hydrogen interaction with metals will contribute to obtaining new potentially important characteristics of membrane filters.
- Published
- 2022
27. Demonstration of Smart Waste Segregation and Utilization System for Smart City
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G. B. Praveen G. B. Praveen, Puneeth Puneeth, Roshan R Roshan R, Shree rakshitha S Shree rakshitha S, and Nischitha P Nischitha P
- Subjects
General Medicine - Abstract
The world faces major environmental challenges associated with waste generation and waste collection , transport, treatment and disposal, by increase in population, volume of waste generation is also increased, this impacts on the environment and public health. Even the private areas which are clean enough failed to utilize the resources efficiently. This waste management system includes segregation of waste into different parts at the local area itself and which are further used as raw material for different process such as power generation, recycling etc. Also it creates clean, hygienic and advanced waste damping area. The generated power can be utilized for domestic and commercial purpose.
- Published
- 2021
28. Pediatric medical genetics house call: Telemedicine for the next generation of patients and providers
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Natasha Shur, Andrea J. Cohen, Tamanna R. Roshan Lal, Erin MacLeod, Eyby Leon, Danielle Starin, and Debra S Regier
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0301 basic medicine ,medicine.medical_specialty ,Telemedicine ,Genetics, Medical ,Health Personnel ,media_common.quotation_subject ,Education environment ,Telehealth ,030105 genetics & heredity ,03 medical and health sciences ,Genetics ,medicine ,House call ,Humans ,Genetics(clinical) ,Quality (business) ,Child ,Set (psychology) ,Pandemics ,Genetics (clinical) ,Quality of Health Care ,media_common ,Medical education ,Education, Medical ,SARS-CoV-2 ,Pilot programs ,COVID-19 ,Hospitals, Pediatric ,Quality Improvement ,House Calls ,030104 developmental biology ,Medical genetics ,Patient Care ,Psychology - Abstract
In an era of increasing technology and interaction with the patient bedside, we explore the role of relocating the bedside from the hospital to the home using telemedicine. The COVID-19 pandemic pushed telemedicine from small and pilot programs to widespread practice at an unprecedented rate. With the rapid implementation of telemedicine, it is important to consider how to create a telehealth system that provides both good care for patients and families while maintaining an excellent education environment for trainees of all levels. To this end, we developed telemedicine educational milestones to describe novel skills required to provide high quality telemedicine care, and allow trainees and clinical educators a metric by which to assess trainee progress. We also created methods and tools to help trainees learn and families feel comfortable in their new role as virtual collaborators. We envision a time when safety does not set the venue; instead the needs of the patient will dictate whether a virtual or in-person visit is the right choice for a family. We expect that pediatric medical genetics and metabolism groups across the country will continue to set a standard of a hybrid care system to meet the unique needs of each individual patient, using telemedicine technology.
- Published
- 2021
29. Membrane Pd–7.70 wt % Lu Alloy for the Preparation and Purification of Hydrogen
- Author
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S. V. Gorbunov, N. R. Roshan, Nikolay A. Dormidontov, A. S. Bakulina, D. A. Rusinov, T. P. Kaminskaya, G. S. Burkhanov, and Natalia B. Kolchugina
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010302 applied physics ,Materials science ,Hydrogen ,Diffusion ,Alloy ,chemistry.chemical_element ,Atmospheric temperature range ,engineering.material ,Condensed Matter Physics ,01 natural sciences ,Metal ,Membrane ,chemistry ,Chemical engineering ,visual_art ,0103 physical sciences ,Materials Chemistry ,engineering ,visual_art.visual_art_medium ,010306 general physics ,FOIL method ,Palladium - Abstract
The purity of hydrogen, which is an alternative energy carrier in powder sources of distributed energy resource systems and, in particular, is the feed stock for fuel cells, should be no less than 99.9999 vol % purity High-purity hydrogen can be prepared only via its separation as a result of selective diffusion through metallic membranes manufactured from specific membrane palladium-based alloys prepared in the form of thin foils. In the present work, the combination of deformation and annealings under different conditions is used to prepare the Pd–7.70 wt % Lu alloy in the form of foil 50 µm thick, whose specific hydrogen permeability is studied in the course of cyclic heating and cooling in a hydrogen atmosphere in a temperature range of 300–500°С. The Pd–7.70 wt % Lu membrane is shown to demonstrate high and stable hydrogen permeability. The evolution of the surface structure of the membrane in the course of its operation in the hydrogen atmosphere is studied by atomic force microscopy using the phase contrast mode.
- Published
- 2021
30. Thermal Expansion Coefficient of a Pd–Cu Solid Solution
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S. V. Gorbunov, V. M. Ievlev, Konstantin Solntsev, S. V. Kannykin, N. R. Roshan, A. S. Prizhimov, and A. I. Dontsov
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010302 applied physics ,Diffraction ,Materials science ,General Chemical Engineering ,Metals and Alloys ,Thermodynamics ,02 engineering and technology ,Composition (combinatorics) ,021001 nanoscience & nanotechnology ,01 natural sciences ,Thermal expansion ,Inorganic Chemistry ,Lattice constant ,Phase composition ,0103 physical sciences ,Materials Chemistry ,0210 nano-technology ,FOIL method ,Solid solution - Abstract
X-ray diffraction has been used to study the phase composition and determine the lattice parameter of the β- and α-phases in foil of a Pd–Cu solid solution with a composition that ensures reversibility of the β $$ \rightleftarrows $$ α transformations: with the structure of the β- and α-phases and a two-phase structure. The thermal expansion coefficient of the Pd–Cu solid solution has been determined for the first time.
- Published
- 2020
31. Reversibility of the β ↔ α Phase Transformations as the Key Factor Determining Whether the Pd–Cu Membrane Foil Texture Depends on the Foil Preparation Process
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A. S. Prizhimov, A. I. Dontsov, V. M. Ievlev, Konstantin Solntsev, S. V. Gorbunov, N. R. Roshan, and S. V. Kannykin
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010302 applied physics ,Materials science ,General Chemical Engineering ,Metals and Alloys ,02 engineering and technology ,Sputter deposition ,021001 nanoscience & nanotechnology ,01 natural sciences ,Inorganic Chemistry ,Membrane ,Chemical engineering ,Phase composition ,Scientific method ,0103 physical sciences ,Materials Chemistry ,Texture (crystalline) ,0210 nano-technology ,FOIL method ,Solid solution - Abstract
We have studied the phase composition and texture of a Pd–Cu solid solution with a nearly equiatomic composition in different steps of the preparation of membrane foil by rolling to 300, 175, 100, and 20 μm and 7-μm-thick foil produced by magnetron sputtering of a target having the same composition as the foil. We have identified orientation relationships between the β- and α-phases in the as-prepared two-phase structures and demonstrated that, after heating to 600°C and subsequent cooling, the ordered solid solutions (β-phase) prepared by the two processes, have identical textures, which can be understood in terms of the transformation mechanism.
- Published
- 2020
32. Techniques for Surface Cleaning of Membrane Foil from Palladium-Based Solid Solutions
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Konstantin Solntsev, N. R. Roshan, N. B. Morozova, O. V. Serbin, V. M. Ievlev, A. S. Prizhimov, and A. I. Dontsov
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010302 applied physics ,Flash-lamp ,Materials science ,General Chemical Engineering ,Metals and Alloys ,chemistry.chemical_element ,02 engineering and technology ,021001 nanoscience & nanotechnology ,01 natural sciences ,Surface cleaning ,Inorganic Chemistry ,Membrane ,chemistry ,0103 physical sciences ,Materials Chemistry ,Surface roughness ,Composite material ,Cyclic voltammetry ,0210 nano-technology ,FOIL method ,Solid solution ,Palladium - Abstract
The effectiveness of flash lamp processing and ion beam sputtering in surface cleaning of membrane foil from a Pd–Cu solid solution produced by rolling has been assessed using cyclic voltammetry and atomic force microscopy. It has been shown that it is reasonable to use cyclic voltammetry for assessing the degree of foil surface cleaning and that combined surface processing of membrane foil is effective in foil surface cleaning. Ion beam processing reproducing the surface elemental composition corresponding to the original composition of the solid solution and increasing surface roughness is a factor of 1.3 more effective than combined surface processing.
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- 2020
33. Flash Lamp Processing-Activated Structural Transformations in Foil of a Pd–Cu Solid Solution
- Author
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V. M. Ievlev, D. A. Sinetskaya, S. V. Gorbunov, N. R. Roshan, Konstantin Solntsev, O. V. Serbin, A. S. Prizhimov, and A. I. Dontsov
- Subjects
010302 applied physics ,Phase transition ,Materials science ,General Chemical Engineering ,Metals and Alloys ,chemistry.chemical_element ,02 engineering and technology ,021001 nanoscience & nanotechnology ,01 natural sciences ,Inorganic Chemistry ,Crystallography ,Thermal conductivity ,Xenon ,chemistry ,Electrical resistivity and conductivity ,0103 physical sciences ,Materials Chemistry ,Irradiation ,0210 nano-technology ,Joule heating ,FOIL method ,Solid solution - Abstract
The β $$ \rightleftarrows $$ α phase transformations in foil of the Pd–52 at % Cu solid solution prepared by rolling have been studied using X-ray diffractometry and resistivity measurements during thermal heating–cooling cycles or lamp processing (LP) using light from high-power pulsed xenon lamps, followed by cooling. The results demonstrate that complete ordering of the two-phase (α + β) as-prepared (as-rolled) foil follows the sequence (α + β) → β → α → β in the first heating–cooling cycle and β → α → β in the second and subsequent cycles. When a radiative energy critical for a given thickness of foil with an ordered structure is delivered to the foil surface, an irreversible β → α phase transformation occurs, whose rate can be three orders of magnitude higher than the rate characteristic of the disordering process during Joule heating. After LP, the reversibility of the β $$ \rightleftarrows $$ α phase transformations, inherent in the initial, ordered structure, is observed in a second thermal cycle: heating to 700°C and cooling. The sequence of phase transitions is α → β → α → β in the first cycle and β → α → β in the second and subsequent cycles. The localization of light in the skin layer and finite thermal conductivity offer the possibility of producing a structure with a phase composition gradient at subcritical irradiation times. The fact that the LP-stabilized α-phase persists up to 300°C makes it possible to compare the mechanical properties of foil samples having identical elemental compositions but different (ordered and disordered) structures.
- Published
- 2020
34. Kinetics of Hydrogen Absorption from a Gas Phase by Diffusion Filtering Pd–Y Membranes
- Author
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S. V. Gorbunov, O. V. Akimova, Roman Svetogorov, N. R. Roshan, G. S. Burkhanov, and Alexey Veligzhanin
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010302 applied physics ,Materials science ,Hydrogen ,Hydride ,Alloy ,technology, industry, and agriculture ,Membrane structure ,Analytical chemistry ,chemistry.chemical_element ,engineering.material ,equipment and supplies ,Condensed Matter Physics ,01 natural sciences ,Metal ,Condensed Matter::Materials Science ,Membrane ,chemistry ,visual_art ,0103 physical sciences ,X-ray crystallography ,Materials Chemistry ,visual_art.visual_art_medium ,engineering ,Substructure ,010306 general physics - Abstract
Diffusion filtering metallic palladium–yttrium membranes are subjected to hydrogenation from a gas phase and are studied by X-ray diffraction using synchrotron radiation. Boundaries of the formation of hydrogen-enriched phases are improved for a range of alloying component content, which is critical for their formation. The effect of the initial state of the alloy on conditions of hydride phase formation in the system is demonstrated. The content of hydrogen occluded in the membrane structure and hydrogen-induced lattice dilatations are determined. The parameters of the alloy substructure are calculated.
- Published
- 2020
35. The effect of a rapid photon treatment of the foil of the PdCu solid solution of composition close to the equiatomic
- Author
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D. А. Sinetskaya, V. M. Ievlev, N. R. Roshan, О. V. V. Serbin, Konstantin Solntsev, and А. I. Dontsov
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Multidisciplinary ,Xenon ,Photon ,Materials science ,chemistry ,Electrical resistance and conductance ,Thermal ,Analytical chemistry ,chemistry.chemical_element ,Composition (visual arts) ,Radiation ,FOIL method ,Solid solution - Abstract
transformations in a thin ~4 m foil of PdCu solid solution were investigated by x-ray diffractometry and measurement of electrical resistance in heating-cooling cycles during thermal or rapid photon treatment by radiation of high-power pulsed xenon lamps. It has been found that a single rapid photon treatment for 0,3 s (the energy dose of the radiation entering the sample is 10 j cm‑2) leads to a complete disordering of the solid solution at a rate 400 times greater than in the heat treatment mode used (heating at a rate of 15 K min‑1).
- Published
- 2019
36. Solvability of system of Volterra integral equations via measure of noncompactness
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H. Nasiri, J. R. Roshan, and Mohammad Mursaleen
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Computational Mathematics ,symbols.namesake ,Pure mathematics ,Applied Mathematics ,Banach space ,symbols ,Fixed-point theorem ,Fixed point ,Banach *-algebra ,Measure (mathematics) ,Volterra integral equation ,Mathematics - Abstract
In this article, we present some fixed point and coupled fixed point theorems adapted from the notion of F-contraction mappings in Banach spaces (B.S.) via the measure of noncompactness (M.N.C). Then we define and present a new class of generalized F-contractions, to upgrade some results of Falest and Latrach (Bull Bell Math Soc Simon Stevin 22:797–812, 2015). Furthermore, we investigate the solvability of a new system of Volterra integral equations in a Banach Algebra. Finally, the usefulness of the theoretical results is shown by an example.
- Published
- 2021
37. Field efficacy of the parasitoid, Pediobius imbrues (Hymenoptera: Eulophidae) on coconut slug caterpillar, Macroplectra nararia Moore (Lepidoptera: Limacodidae)
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G. Krishna Rao, D R Roshan, and N. B. V. Chalapathi Rao
- Subjects
0106 biological sciences ,Eulophidae ,biology ,Bracon hebetor ,010607 zoology ,Hymenoptera ,biology.organism_classification ,01 natural sciences ,Applied Microbiology and Biotechnology ,Limacodidae ,Parasitoid ,Toxicology ,010602 entomology ,Insect Science ,Pediobius ,PEST analysis ,Caterpillar ,Agronomy and Crop Science - Abstract
The coconut slug caterpillar, Macroplectra nararia is one of the major pests of coconut plantations in Andhra Pradesh with periodic out breaks especially under favorable weather conditions. Though many parasitoids were identified against this sporadic out break pest, none were found amenable for laboratory rearing. A new larval parasitoid, Pediobius imbrues (Hymenoptera: Eulophidae) with a natural parasitisation ranging from 2 -10 per cent under field conditions was identified in slug affected coconut gardens in March 2015. This parasitoid was also found amenable for lab rearing on Bracon hebetor probably being facultative hyper parasitoid. Field release studies of lab reared P. imbrues against slug caterpillar in the affected coconut gardens revealed that a maximum of 41.41 and 50.31 per cent parasitsm of slug caterpillar, respectively, in 2017 and 2018 within 30 days after release and this promising parasitism provides scope for large scale field releases during slug caterpillar out breaks in view of major economic losses caused by the pest.
- Published
- 2019
38. Experimental study on properties of mechanical resistance of polyamide in clay soil
- Author
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J. Gokul Krishnan, Bijivemula Sruthi Reddy, Syed Mohammed, R. Roshan, and S.V. Sivapriya
- Subjects
Ground improvement ,durabilidad ,Materials science ,Atterberg's limit ,Unconfined compressive strength ,Composite number ,Expansive soil ,PA-12 ,límite de Atterberg ,Mechanical resistance ,Durability ,Shear (sheet metal) ,Mejora del suelo ,Polyamide ,Soil water ,Plastic waste ,Composite material ,Clay soil ,resistencia a la compresión no confinada ,suelo expansivo ,Stabilizer (chemistry) - Abstract
The presence of clay soil causes problems at the base of the structure: it swells when wet and shrinks when dry, which provides a reduction in the resistance to cutting of the soil. Plastic waste in the form of polyamide powder (PA-12) from the 3D printing industry can be used to improve the mechanical properties of the soil. This experimental study is an attempt to combine these two objectives of stabilizing the soil by using waste PA-12. The mechanical and shear resistant properties gave us confidence in choosing PA-12 as a stabilizer in clay soils, making them composite soils. Resumen La presencia de suelo arcilloso causa problemas a la base de la estructura: se hincha cuando está mojado y se encoge en estado seco, lo que proporciona una reducción de la resistencia al corte del suelo. Los residuos plásticos en forma de poliamida en polvo (PA-12) de la industria de la impresión 3D se pueden utilizar para mejorar las propiedades mecánicas del suelo. Este estudio experimental es un intento de combinar estos dos objetivos de estabilizar el suelo mediante la utilización de desechos de PA-12. Las propiedades mecánicas y resistentes al cizallamiento dieron confianza al elegir PA-12 como estabilizador en suelos arcillosos, convirtiéndolos en suelos compuestos.
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- 2021
39. A survey on blockchain in robotics:issues, opportunities, challenges and future directions
- Author
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Aditya, U. S. (U.S.P. Srinivas), Singh, R. (Roshan), Singh, P. K. (Pranav Kumar), and Kalla, A. (Anshuman)
- Subjects
Blockchain ,Robotics ,Smart contracts - Abstract
Robotics is the multi-disciplinary domain that is booming in today’s world, and expanding its roots deep into various fields of research, manufacturing industries, healthcare, and even in our day-to-day lives. Nevertheless, as with any other evolving technology, robotics face numerous challenges. In this context, lately, blockchain technology has been identified as a promising technology to resolve many of these issues such as identification of malicious/rogue nodes, malfunctioning/faults in automated processes, non-compliance to the agreed norms and privacy rules, security attacks on robotic systems, and non-transparency in performance monitoring and audits. In particular, blockchain with its features like decentrality, immutability, provenance, low operational cost, tight access control, and trustworthy operations, can offer significant improvements to new applications and use cases driven by robotics. Thus, the paper begins with exploring the key requirements and technical challenges encountered by robots in general. Next, it provides detailed overview of blockchain technology in a tutorial style. Then, the role of blockchain for different uses cases of robotics are surveyed. Furthermore, various technical challenges that need to be mitigated to harness full potential of blockchain for robotics are highlighted. Finally, the future research directions are presented that can pave the way ahead for advancements and profitable integration of blockchain in the realm of robotics..
- Published
- 2021
40. Light-based Internet of Things:implementation of an optically connected energy-autonomous node
- Author
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Perera, A. (Amila), Katz, M. (Marcos), Godaliyadda, R. (Roshan), Häkkinen, J. (Juha), and Strömmer, E. (Esko)
- Subjects
VLC ,IoT ,Printed electronics ,Indoor energy harvesting ,LIoT - Abstract
In the near future, with the development of 5G NR, a massive number of IoT nodes are expected to come online. Acquiring bandwidth from an overcrowded licensed radio frequency spectrum as well as overcoming battery life constraints will become the main challenges for these IoT based devices. As a promising solution for the above challenges, this work provides a feasibility study and an implementation framework for a visible light communication-based energy-autonomous IoT node. This work proposes the use of printed electronic technology to minimize the physical characteristics and cost of the IoT node. In the future, energy-autonomous IoT nodes could be available virtually on any surface. Whenever the node is exposed to light, it will be connected to internet.
- Published
- 2021
41. Light-based IoT:developing a full-duplex energy autonomous IoT node using printed electronics technology
- Author
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Perera, M. A. (Malalgodage Amila Nilantha), Katz, M. (Marcos), Häkkinen, J. (Juha), and Godaliyadda, R. (Roshan)
- Subjects
VLC ,IoT ,Zero-energy ,Printed electronics ,Energy-autonomous ,LIoT - Abstract
The light-based Internet of things (LIoT) concept defines nodes that exploit light to (a) power up their operation by harvesting light energy and (b) provide full-duplex wireless connectivity. In this paper, we explore the LIoT concept by designing, implementing, and evaluating the communication and energy harvesting performance of a LIoT node. The use of components based on printed electronics (PE) technology is adopted in the implementation, supporting the vision of future fully printed LIoT nodes. In fact, we envision that as PE technology develops, energy-autonomous LIoT nodes will be entirely printed, resulting in cost-efficient, flexible and highly sustainable connectivity solutions that can be attached to the surface of virtually any object. However, the use of PE technology poses additional challenges to the task, as the performance of these components is typically considerably poorer than that of conventional components. In the study, printed photovoltaic cells, printed OLEDs (organic light-emitting diodes) as well as printed displays are used in the node implementation. The dual-mode operation of the proposed LIoT node is demonstrated, and its communication performance in downlink and uplink directions is evaluated. In addition, the energy harvesting system’s behaviour is studied and evaluated under different illumination scenarios and based on the results, a novel self-operating limitation aware algorithm for LIoT nodes is proposed.
- Published
- 2021
42. Polygenic hazard score is associated with prostate cancer in multi-ethnic populations
- Author
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Huynh-Le, M.-P. (Minh-Phuong), Fan, C.C. (Chun Chieh), Karunamuni, R. (Roshan), Thompson, W.K. (Wesley K.), Martinez, M.E. (Maria Elena), Eeles, R. (Rosalind), Kote-Jarai, Z., Muir, K. (Kenneth), Schleutker, J. (Johanna), Pashayan, N. (Nora), Batra, J. (Jyotsna), Grönberg, H. (Henrik), Neal, D.E. (David E.), Donovan, J.L. (Jenny L.), Hamdy, F.C. (Freddie C.), Martin, R.M. (Richard M.), Nielsen, S.F. (Sune F.), Nordestgaard, B.G. (Børge), Wiklund, F. (Fredrik), Tangen, C.M. (Catherine M.), Giles, G.G. (Graham G.), Wolk, K. (Kerstin), Albanes, D. (Demetrius), Travis, S.P.L. (Simon), Blot, W.J. (William), Zheng, W. (Wei), Sanderson, M. (Maureen), Stanford, J.L. (Janet L.), Mucci, L.A. (Lorelei A.), West, C.M.L. (Catharine M. L.), Kibel, A. (Adam), Cussenot, O. (Olivier), Berndt, S.I. (Sonja), Koutros, S. (Stella), Sørensen, K.D. (Karina Dalsgaard), Cybulski, C. (Cezary), Grindedal, E.M. (Eli Marie), Menegaux, F. (Florence), Khaw, K.-T. (Kay-Tee), Park, J.Y. (Jong Y.), Ingles, S.A. (Sue), Maier, C. (Christiane), Hamilton, R.J. (Robert J.), Thibodeau, S.N. (Stephen), Rosenstein, B.S. (Barry S.), Lu, Y.-J. (Yong-Jie), Watya, S. (Stephen), Vega, A. (Ana), Kogevinas, M. (Manolis), Penney, K.L. (Kathryn L.), Huff, C. (Chad), Teixeira, M.R. (Manuel R.), Multigner, L. (Luc), Leach, R.J. (Robin J.), Cannon-Albright, L.A. (Lisa), Brenner, H. (Hermann), John, E.M. (Esther), Kaneva, R. (Radka), Logothetis, N.K. (Nikos), Floris, O.A.M., De Ruyck, K. (Kim), Pandha, H. (Hardev), Razack, A. (Azad), Newcomb, L.F. (Lisa F.), Fowke, J.H. (Jay H.), Gamulin, M. (Marija), Usmani, N. (Nawaid), Claessens, F. (Frank), Gago-Dominguez, M. (Manuela), Townsend, P.A. (Paul A.), Bush, W.S. (William S.), Roobol-Bouts, M.J. (Monique), Parent, M.-É. (Marie-Élise), Hu, J.J. (Jennifer J.), Mills, I.G. (Ian G.), Andreassen, O.A. (Ole), Dale, A.M. (Anders), Seibert, T.M. (Tyler M.), Huynh-Le, M.-P. (Minh-Phuong), Fan, C.C. (Chun Chieh), Karunamuni, R. (Roshan), Thompson, W.K. (Wesley K.), Martinez, M.E. (Maria Elena), Eeles, R. (Rosalind), Kote-Jarai, Z., Muir, K. (Kenneth), Schleutker, J. (Johanna), Pashayan, N. (Nora), Batra, J. (Jyotsna), Grönberg, H. (Henrik), Neal, D.E. (David E.), Donovan, J.L. (Jenny L.), Hamdy, F.C. (Freddie C.), Martin, R.M. (Richard M.), Nielsen, S.F. (Sune F.), Nordestgaard, B.G. (Børge), Wiklund, F. (Fredrik), Tangen, C.M. (Catherine M.), Giles, G.G. (Graham G.), Wolk, K. (Kerstin), Albanes, D. (Demetrius), Travis, S.P.L. (Simon), Blot, W.J. (William), Zheng, W. (Wei), Sanderson, M. (Maureen), Stanford, J.L. (Janet L.), Mucci, L.A. (Lorelei A.), West, C.M.L. (Catharine M. L.), Kibel, A. (Adam), Cussenot, O. (Olivier), Berndt, S.I. (Sonja), Koutros, S. (Stella), Sørensen, K.D. (Karina Dalsgaard), Cybulski, C. (Cezary), Grindedal, E.M. (Eli Marie), Menegaux, F. (Florence), Khaw, K.-T. (Kay-Tee), Park, J.Y. (Jong Y.), Ingles, S.A. (Sue), Maier, C. (Christiane), Hamilton, R.J. (Robert J.), Thibodeau, S.N. (Stephen), Rosenstein, B.S. (Barry S.), Lu, Y.-J. (Yong-Jie), Watya, S. (Stephen), Vega, A. (Ana), Kogevinas, M. (Manolis), Penney, K.L. (Kathryn L.), Huff, C. (Chad), Teixeira, M.R. (Manuel R.), Multigner, L. (Luc), Leach, R.J. (Robin J.), Cannon-Albright, L.A. (Lisa), Brenner, H. (Hermann), John, E.M. (Esther), Kaneva, R. (Radka), Logothetis, N.K. (Nikos), Floris, O.A.M., De Ruyck, K. (Kim), Pandha, H. (Hardev), Razack, A. (Azad), Newcomb, L.F. (Lisa F.), Fowke, J.H. (Jay H.), Gamulin, M. (Marija), Usmani, N. (Nawaid), Claessens, F. (Frank), Gago-Dominguez, M. (Manuela), Townsend, P.A. (Paul A.), Bush, W.S. (William S.), Roobol-Bouts, M.J. (Monique), Parent, M.-É. (Marie-Élise), Hu, J.J. (Jennifer J.), Mills, I.G. (Ian G.), Andreassen, O.A. (Ole), Dale, A.M. (Anders), and Seibert, T.M. (Tyler M.)
- Abstract
Genetic models for cancer have been evaluated using almost exclusively European data, which could exacerbate health disparities. A polygenic hazard score (PHS1) is associated with age at prostate cancer diagnosis and improves screening accuracy in Europeans. Here, we evaluate performance of PHS2 (PHS1, adapted for OncoArray) in a multi-ethnic dataset of 80,491 men (49,916 cases, 30,575 controls). PHS2 is associated with age at diagnosis of any and aggressive (Gleason score ≥ 7, stage T3-T4, PSA ≥ 10 ng/mL, or nodal/distant metastasis) cancer and prostate-cancer-specific death. Associations with cancer are significant within European (n = 71,856), Asian (n = 2,382), and African (n = 6,253) genetic ancestries (p < 10−180). Comparing the 80th/20th PHS2 percentiles, hazard ratios for prostate cancer, aggressive cancer, and prostate-cancer-specific death are 5.32, 5.88, and 5.68, respectively. Within European, Asian, and African ancestries, hazard ratios for prostate cancer are: 5.54, 4.49, and 2.54, respectively. PHS2 risk-stratifies men f
- Published
- 2021
- Full Text
- View/download PDF
43. Maternal vitamin D levels and the risk of offspring attention-deficit/hyperactivity disorder
- Author
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Sucksdorff, M. (Minna), Brown, A. S. (Alan S.), Chudal, R. (Roshan), Surcel, H.-M. (Heljä-Marja), Hinkka-Yli-Salomäki, S. (Susanna), Cheslack-Postava, K. (Keely), Gyllenberg, D. (David), Sourander, A. (Andre), Sucksdorff, M. (Minna), Brown, A. S. (Alan S.), Chudal, R. (Roshan), Surcel, H.-M. (Heljä-Marja), Hinkka-Yli-Salomäki, S. (Susanna), Cheslack-Postava, K. (Keely), Gyllenberg, D. (David), and Sourander, A. (Andre)
- Abstract
Objective: Recent evidence has highlighted the importance of vitamin D in the development of the central nervous system. Some studies have shown an association between maternal vitamin D deficiency during pregnancy and offspring attention-deficit/hyperactivity disorder (ADHD) symptoms based on parent or teacher ratings. There are no previous studies on early pregnancy 25-hydroxyvitamin D [25(OH)D] levels and the risk of diagnosed offspring ADHD. Our aim was to examine maternal 25(OH)D levels in early pregnancy and offspring ADHD. Method: In this nationwide population-based case-control study, 1,067 ADHD cases (born between 1998 and 1999 and diagnosed according to the International Classification of Diseases) and 1,067 matched controls were identified from Finnish registers. Maternal 25(OH)D levels were measured using quantitative immunoassay from maternal sera, collected during the first trimester and archived in the national biobank. Conditional logistic regression was used to examine the association between maternal 25(OH)D and offspring ADHD. Results: There was a significant association between decreasing log-transformed maternal 25(OH)D levels and offspring ADHD both in the unadjusted analyses (odds ratio 1.65; 95% CI 1.33—2.05; p < .001) and in the analyses adjusting for maternal socioeconomic status and age (odds ratio 1.45; 95% CI 1.15—1.81; p = .002). Analyses by quintiles of maternal 25(OH)D levels in the lowest versus highest quintile revealed an adjusted odds ratio for offspring ADHD of 1.53 (95% CI 1.11—2.12; p = .010). Conclusion: This study demonstrated an association between low maternal 25(OH)D during pregnancy and an elevated risk for offspring ADHD. If replicated in independent samples, this finding may have significant public health implications.
- Published
- 2021
44. Membrane characteristics of palladium-samarium alloy foils: mechanical properties and hydrogen permeability
- Author
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A. S. Bakulina, Mark V. Zheleznyi, N. R. Roshan, Natalia B. Kolchugina, Gennadii S. Burkhanov, Nikolay A. Dormidontov, and Semen V. Gorbunov
- Subjects
Samarium ,Membrane ,Materials science ,Hydrogen ,chemistry ,Chemical engineering ,Permeability (electromagnetism) ,Alloy ,engineering ,chemistry.chemical_element ,engineering.material ,Palladium - Published
- 2020
45. Maternal serum C-reactive protein (CRP) and offspring attention deficit hyperactivity disorder (ADHD)
- Author
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Chudal, R. (Roshan), Brown, A. S. (Alan S.), Gyllenberg, D. (David), Hinkka‑Yli‑Salomäki, S. (Susanna), Sucksdorff, M. (Minna), Surcel, H. (Heljä‑Marja), Upadhyaya, S. (Subina), and Sourander, A. (Andre)
- Subjects
Nationwide cohort ,Epidemiology ,mental disorders ,ADHD ,CRP ,Prenatal inflammation - Abstract
Exposure to infection and inflammation during the fetal period are associated with offspring neuropsychiatric disorders. Few previous studies have examined this association with ADHD with mixed findings. This study aims to examine the association between early gestational maternal C-reactive protein (CRP), prospectively assayed in stored maternal sera and the risk of ADHD in offspring. This study is based on the Finnish Prenatal studies of ADHD (FIPS-ADHD) with a nested case–control design. It includes all singleton-born children in Finland between January 1, 1998 and December 31, 1999 and diagnosed with ADHD. A total of 1079 cases and equal number of controls were matched on date of birth, sex and place of birth. Maternal CRP levels were assessed using a latex immunoassay from archived maternal serum specimens, collected during the first and early second trimester of pregnancy. Elevated maternal CRP when analyzed as a continuous variable was not associated with offspring ADHD (OR 1.05, 95% CI 0.96–1.15). No significant associations were seen in the highest quintile of CRP (OR 1.18, 95% CI 0.88–1.58). The results were similar in both sexes as well as among ADHD cases with or without comorbid ASD or conduct disorder. In this first study examining CRP, a biomarker for inflammation, during early pregnancy in relation to offspring ADHD, we report no significant associations. The lack of any association, when considered with positive findings seen in ASD and schizophrenia, and negative findings in bipolar disorder suggests different pathways linking maternal immune activation and development of various neuropsychiatric disorders.
- Published
- 2020
46. Field efficacy of the parasitoid, Pediobius imbrues (Hymenoptera: Eulophidae) on coconut slug caterpillar, Macroplectra nararia Moore (Lepidoptera: Limacodidae)
- Author
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Rao, N. B. V. Chalapathi; Horticultural Research Station, Dr. Y. S. R. Horticultural University, Ambajipeta, East Godavari - 533214, Andhra Pradesh, Rao, G. Krishna; Horticultural Research Station, Dr. Y. S. R. Horticultural University, Ambajipeta, East Godavari -533214, Andhra Pradesh, D. R., Roshan; Horticultural Research Station, Dr. Y. S. R. Horticultural University, Ambajipeta, East Godavari -533214, Andhra Pradesh, Rao, N. B. V. Chalapathi; Horticultural Research Station, Dr. Y. S. R. Horticultural University, Ambajipeta, East Godavari - 533214, Andhra Pradesh, Rao, G. Krishna; Horticultural Research Station, Dr. Y. S. R. Horticultural University, Ambajipeta, East Godavari -533214, Andhra Pradesh, and D. R., Roshan; Horticultural Research Station, Dr. Y. S. R. Horticultural University, Ambajipeta, East Godavari -533214, Andhra Pradesh
- Abstract
The coconut slug caterpillar, Macroplectra nararia is one of the major pests of coconut plantations in Andhra Pradesh with periodic out breaks especially under favorable weather conditions. Though many parasitoids were identified against this sporadic out break pest, none were found amenable for laboratory rearing. A new larval parasitoid, Pediobius imbrues (Hymenoptera: Eulophidae) with a natural parasitisation ranging from 2 -10 per cent under field conditions was identified in slug affected coconut gardens in March 2015. This parasitoid was also found amenable for lab rearing on Bracon hebetor probably being facultative hyper parasitoid. Field release studies of lab reared P. imbrues against slug caterpillar in the affected coconut gardens revealed that a maximum of 41.41 and 50.31 per cent parasitsm of slug caterpillar, respectively, in 2017 and 2018 within 30 days after release and this promising parasitism provides scope for large scale field releases during slug caterpillar out breaks in view of major economic losses caused by the pest.
- Published
- 2020
47. Field efficacy of the parasitoid, Pediobius imbrues (Hymenoptera: Eulophidae) on coconut slug caterpillar, Macroplectra nararia Moore (Lepidoptera: Limacodidae)
- Author
-
Rao, N. B. V. Chalapathi, Rao, G. Krishna, D. R., Roshan, Rao, N. B. V. Chalapathi, Rao, G. Krishna, and D. R., Roshan
- Abstract
The coconut slug caterpillar, Macroplectra nararia is one of the major pests of coconut plantations in Andhra Pradesh with periodic out breaks especially under favorable weather conditions. Though many parasitoids were identified against this sporadic out break pest, none were found amenable for laboratory rearing. A new larval parasitoid, Pediobius imbrues (Hymenoptera: Eulophidae) with a natural parasitisation ranging from 2 -10 per cent under field conditions was identified in slug affected coconut gardens in March 2015. This parasitoid was also found amenable for lab rearing on Bracon hebetor probably being facultative hyper parasitoid. Field release studies of lab reared P. imbrues against slug caterpillar in the affected coconut gardens revealed that a maximum of 41.41 and 50.31 per cent parasitsm of slug caterpillar, respectively, in 2017 and 2018 within 30 days after release and this promising parasitism provides scope for large scale field releases during slug caterpillar out breaks in view of major economic losses caused by the pest.
- Published
- 2020
48. A climate-architecture modeling to explore the effect of land use change scenario on building bioclimatic design pattern in order to provide human thermal comfort
- Author
-
José A. Orosa, Gh. R. Roshan, and Mohammad Farrokhzad
- Subjects
Environmental Engineering ,Health, Toxicology and Mutagenesis ,Air pollution ,Climate change ,02 engineering and technology ,010501 environmental sciences ,medicine.disease_cause ,01 natural sciences ,Applied Microbiology and Biotechnology ,020401 chemical engineering ,medicine ,Relative humidity ,Land use, land-use change and forestry ,0204 chemical engineering ,Waste Management and Disposal ,0105 earth and related environmental sciences ,Water Science and Technology ,Land use ,Design pattern ,Public Health, Environmental and Occupational Health ,Thermal comfort ,Energy consumption ,Pollution ,Climatology ,Environmental science ,Research Article - Abstract
Given the role of different land uses in climate change, the present study seeks to identify the effect of land use change on the building bioclimatic design pattern in a dry climatic type. For this purpose, Yazd station in central regions of Iran has been analysed as a representative of dry climate type. The Air Pollution Modelling (TAPM) which is a regional climate software was used to identify the effect of forest cover on climate change in regional dimensions and finally its impact on heating and cooling solutions for buildings. For this study, two scenarios were considered. One scenario was the real situation in the area and the other one was the simulation of the effect of forest cover on climate change in the studied area. Finally, the results of this study revealed that if there is a forest cover, due to the temperature increase in all months of the year, the average annual temperature will increase by 9.20 °C compared to the real conditions. On the other hand, in the forest cover simulation scenario, the relative humidity will increase by 13.4% per year. The findings also showed that, despite forest cover, the annual temperature difference and temperature fluctuations are reduced by 4 °C. Furthermore, the results of this study indicated that if there is a forest cover, the heating requirements will be reduced in total and the demand for the bioclimatic design of cooling and dehumidification will be increased.
- Published
- 2019
49. Intelligent Transaction System for Fraud Detection using Deep Learning Networks
- Author
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N M Sanjeev Kumaar, K Sakthi Eswaran, J Fenila Naomi, and R Roshan Jeniel
- Subjects
History ,business.industry ,Computer science ,media_common.quotation_subject ,Deep learning ,Payment ,Computer security ,computer.software_genre ,Computer Science Applications ,Education ,Consistency (database systems) ,Credit card ,Issuer ,Order (business) ,Cash ,Artificial intelligence ,business ,Database transaction ,computer ,media_common - Abstract
Detecting online transaction fraud is a basic study of the new era of electronic transactions. Because the payment patterns of customers and the fraud behaviour of offenders are continually changing, improving the consistency of the fraud detection model and ensuring its stability is exceedingly challenging. In this report, we will look at We concentrate on acquiring deep feature representations of legal and fraud transactions from the perspective of a deep neural network’s loss function in this report. Our aim is to increase the separability and discrimination of features in order to boost the efficiency and stability of our fraud detection platform, with the rapid evolution of the technology, the world is turning to use online transaction instead of cash in their daily life, which opens the door to many new ways for fraudsters to use these cards in a nefarious manner. Global losses are projected to reach $35 billion by 2020, according to the Nilson report. To guarantee that users of these credit cards are secure, the credit card issuer should provide a program that protects them from any threats they can experience. As a result, we illustrate our framework for predicting whether transactions are genuine or illegitimate using Kaggel’s IEEE-CIS Fraud Detection dataset. BiLSTM-MaxPooling-BiGRUM is the name of our model. Long bi-directional gated repeated unit and long bi-directional memory term (BiLSTM) are used in axPooling (BiGRU).
- Published
- 2021
50. Reversibility of the $$\beta \rightleftharpoons \alpha $$ β ⇌ α phase transformations in a Pd–Cu solid solution
- Author
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V. M. Ievlev, A. A. Maksimenko, N. R. Roshan, and A. I. Dontsov
- Subjects
010302 applied physics ,Auger electron spectroscopy ,Materials science ,Hydrogen ,General Chemical Engineering ,Metals and Alloys ,Analytical chemistry ,chemistry.chemical_element ,02 engineering and technology ,021001 nanoscience & nanotechnology ,01 natural sciences ,Inorganic Chemistry ,chemistry ,Electrical resistivity and conductivity ,Phase (matter) ,0103 physical sciences ,X-ray crystallography ,Materials Chemistry ,0210 nano-technology ,Diffusion bonding ,FOIL method ,Solid solution - Abstract
Thin samples (about 4 μm in thickness) of membrane foil of a Pd–Cu solid solution have been grown on the surface of a SiO2/Si heterostructure by magnetron sputtering. The key features of \(\beta \rightleftharpoons \alpha \) phase transformations have been identified using X-ray diffraction, Auger electron spectroscopy, energy dispersive X-ray microanalysis, and resistivity measurements during a heating–cooling cycle. The results demonstrate that the phase transformations are reversible only in solid solutions containing an excess of copper in the concentration range corresponding to limiting temperatures near the temperature stability limit of the β-phase. Thermal conditions of membrane element operation have been found that ensure stability of the ordered atomic structure of the foil and, accordingly, its high performance. The \(\beta \rightleftharpoons \alpha \) phase transformation has been shown to be reversible after holding the foil at t = 830°C, in a state with a disordered atomic structure, which ensures restoration of its high hydrogen permeability after diffusion bonding to the case of a membrane element.
- Published
- 2017
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