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Article ; Online: Effect of dry and wet finishing and polishing on color change and opacity of nanofill and nanohybrid composites.

Molaei, Mehdi / Mohammadzadeh, Anoosh / Ghasemi, Amir / Badiee, Mehdi

2024 Volume 24, Issue 1, Page(s) 287

Abstract: Background: As superior esthetic is one of the main reasons for using composite resins, it is very important to be familiar with factors and techniques affecting their optical properties and appearance.: Aim: The aim of this study was comparing the ... ...

Abstract	Background: As superior esthetic is one of the main reasons for using composite resins, it is very important to be familiar with factors and techniques affecting their optical properties and appearance. Aim: The aim of this study was comparing the effect of finishing and polishing with and without water coolant, on the color change and opacity of composite resin materials. Methods: Composites used for preparing samples were Z250 (microhybrid), Z350XT (nanofilled), and Z550 (nanohybrid). Then divided into 4 groups of 5 depending on finishing and polishing technique (dry or wet) and time (immediate and after twenty-four hours). After polishing, samples were assessed using a spectrophotometer. Color change and opacity were determined. Data was analyzed using Kolmogorov-Smirnov, ANOVA and Tukey HSD tests. Results: Type of material at both time had a significant effect on ΔE and opacity. Our results in dry and wet technique immediately(T0) showed that the highest and lowest ΔE and opacity belong to Z350XT (p < 0.001). After Twenty-four hours (T24), opacity of Z250 in wet condition was higher than dry condition (p < 0.001). Conclusions: Wet or dry technique was only effective on color in immediate polishing. Regarding opacity, technique was only effective in case of delayed polishing.
MeSH term(s)	Humans ; Color ; Dental Polishing/methods ; Materials Testing ; Surface Properties ; Composite Resins/therapeutic use
Chemical Substances	Composite Resins
Language	English
Publishing date	2024-02-28
Publishing country	England
Document type	Journal Article
ZDB-ID	2091511-1
ISSN	1472-6831 ; 1472-6831
ISSN (online)	1472-6831
ISSN	1472-6831
DOI	10.1186/s12903-024-03944-0
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Book ; Online: A Versatile Pseudo-Rigid Body Modeling Method

Molaei, Amir / Aghdam, Amir G. / Dargahi, Javad

2022

Abstract: A novel semi-analytical method is proposed to develop the pseudo-rigid-body~(PRB) model of robots made of highly flexible members (HFM), such as flexures and continuum robots, with no limit on the degrees of freedom of the PRB model. The proposed method ... ...

Abstract	A novel semi-analytical method is proposed to develop the pseudo-rigid-body~(PRB) model of robots made of highly flexible members (HFM), such as flexures and continuum robots, with no limit on the degrees of freedom of the PRB model. The proposed method has a simple formulation yet high precision. Furthermore, it can describe HFMs with variable curvature and stiffness along their length. The method offers a semi-analytical solution for the highly coupled nonlinear constrained optimization problem of PRB modeling and can be extended to variable-length robots comprised of HFM, such as catheter and concentric tube robots. We also show that this method can obtain a PRB model of uniformly stiff HFMs, with only three parameters. The versatility of the method is investigated in various applications of HFM in continuum robots. Simulations demonstrate substantial improvement in the precision of the PRB model in general and a reduction in the complexity of the formulation. Comment: 10 pages and 8 figures
Keywords	Computer Science - Robotics ; Electrical Engineering and Systems Science - Systems and Control
Subject code	629
Publishing date	2022-06-13
Publishing country	us
Document type	Book ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article: Effect of Wet and Dry Finishing and Polishing Technique on Microhardness and Flexural Strength of Nanocomposite Resins.

Ghasemi, Amir / Mohammadzadeh, Anoosh / Molaei, Mehdi / Sheikh-Al-Eslamian, Seyedeh Mahsa / Karimi, Mandana

International journal of dentistry

2023 Volume 2023, Page(s) 2182094

Abstract: Objectives: This in vitro study was aimed to assess the effect of wet and dry finishing and polishing techniques on the flexural strength and microhardness of different commercial nanoparticle contained composite resins.: Methods and materials: The ... ...

Abstract	Objectives: This in vitro study was aimed to assess the effect of wet and dry finishing and polishing techniques on the flexural strength and microhardness of different commercial nanoparticle contained composite resins. Methods and materials: The samples were made of Z250 (microhybrid), Z350 XT (nanofilled), and Z550 (nanohybrid) resin composites. Each group was subdivided into 2 subgroups according to polishing protocols. Subgroup 1 for each composite underwent wet polishing, and subgroup 2 was subject to dry polishing technique. Flexural strength and microhardness of the samples were measured at two different times of polishing ( Results: ANOVA showed that the type of composite has a significant effect on flexural strength. Two-way ANOVA showed that, at Conclusion: Immediate wet finishing and polishing presented lower flexural strength. Delayed dry/wet finishing and polishing significantly enhanced the hardness of the samples.
Language	English
Publishing date	2023-02-16
Publishing country	Egypt
Document type	Journal Article
ZDB-ID	2546524-7
ISSN	1687-8736 ; 1687-8728
ISSN (online)	1687-8736
ISSN	1687-8728
DOI	10.1155/2023/2182094
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Book ; Online: Video-based Surgical Skill Assessment using Tree-based Gaussian Process Classifier

Rezaei, Arefeh / Ahmadi, Mohammad Javad / Molaei, Amir / Taghirad, Hamid. D.

2023

Abstract: This paper aims to present a novel pipeline for automated surgical skill assessment using video data and to showcase the effectiveness of the proposed approach in evaluating surgeon proficiency, its potential for targeted training interventions, and ... ...

Abstract	This paper aims to present a novel pipeline for automated surgical skill assessment using video data and to showcase the effectiveness of the proposed approach in evaluating surgeon proficiency, its potential for targeted training interventions, and quality assurance in surgical departments. The pipeline incorporates a representation flow convolutional neural network and a novel tree-based Gaussian process classifier, which is robust to noise, while being computationally efficient. Additionally, new kernels are introduced to enhance accuracy. The performance of the pipeline is evaluated using the JIGSAWS dataset. Comparative analysis with existing literature reveals significant improvement in accuracy and betterment in computation cost. The proposed pipeline contributes to computational efficiency and accuracy improvement in surgical skill assessment using video data. Results of our study based on comments of our colleague surgeons show that the proposed method has the potential to facilitate skill improvement among surgery fellows and enhance patient safety through targeted training interventions and quality assurance in surgical departments. Comment: 11 pages, 2 figures, journal
Keywords	Computer Science - Computer Vision and Pattern Recognition
Subject code	006
Publishing date	2023-12-15
Publishing country	us
Document type	Book ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article: Comparative Evaluation of the Sedative and Analgesic Effects of Caudal Epidural Administration of Lidocaine Alone or in Combination With Xylazine, Detomidine, Medetomidine, and Dexmedetomidine in Mediterranean Miniature Donkeys.

Samimi, Amir Saeed / Molaei, Mohammad Mahdi / Azari, Omid / Rezaei, Mohammad Ali / Hashemian, Ali

Journal of equine veterinary science

2022 Volume 113, Page(s) 103915

Abstract: The present study aimed to compare the sedative and analgesic effects of caudal epidural administration of lidocaine alone or in combination with four different ... ...

Abstract	The present study aimed to compare the sedative and analgesic effects of caudal epidural administration of lidocaine alone or in combination with four different α
MeSH term(s)	Adrenergic alpha-2 Receptor Agonists ; Analgesics ; Animals ; Ataxia/veterinary ; Dexmedetomidine/pharmacology ; Equidae ; Female ; Hypnotics and Sedatives/pharmacology ; Imidazoles ; Lidocaine/pharmacology ; Male ; Medetomidine/pharmacology ; Pain/veterinary ; Xylazine/pharmacology
Chemical Substances	Adrenergic alpha-2 Receptor Agonists ; Analgesics ; Hypnotics and Sedatives ; Imidazoles ; Xylazine (2KFG9TP5V8) ; Dexmedetomidine (67VB76HONO) ; detomidine (7N8K34P2XH) ; Lidocaine (98PI200987) ; Medetomidine (MR15E85MQM)
Language	English
Publishing date	2022-02-22
Publishing country	United States
Document type	Journal Article
ZDB-ID	2102631-2
ISSN	1542-7412 ; 0737-0806
ISSN (online)	1542-7412
ISSN	0737-0806
DOI	10.1016/j.jevs.2022.103915
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Article ; Online: Evaluation of the sedative and physiological effects of xylazine, detomidine, medetomidine and dexmedetomidine in goats.

Nahvi, Atefeh / Molaei, Mohammad Mahdi / Samimi, Amir Saeed / Azari, Omid / Mashayekhi, Hossein / Ebrahimzadeh, Fatemeh

Veterinary medicine and science

2022 Volume 8, Issue 3, Page(s) 1205–1210

Abstract: Background: Many α: Introduction: The present study aims to compare the sedative and physiological effects of intravenous (IV) administration of xylazine, detomidine, medetomidine and dexmedetomidine in goats.: Methods: Ten healthy goats aged 6 ± ... ...

Abstract	Background: Many α Introduction: The present study aims to compare the sedative and physiological effects of intravenous (IV) administration of xylazine, detomidine, medetomidine and dexmedetomidine in goats. Methods: Ten healthy goats aged 6 ± 1 months and weighing 15 ± 2 kg were used in experimental, crossover Latin square, randomised and blinded study. Animals were assigned to five IV treatments: control (normal saline); xylazine (100 μg kg Results: Heart rate (HR), respiratory rate (RR), rectal temperature (RT), ruminal motility and capillary refill time (CRT) were performed before (baseline) and after drug administration. Animals in α Conclusions: The duration of sedation was up to 60 min after IV administration of xylazine (100 μg kg
MeSH term(s)	Adrenergic Agonists ; Animals ; Dexmedetomidine/pharmacology ; Goats ; Hypnotics and Sedatives/pharmacology ; Imidazoles ; Medetomidine/pharmacology ; Xylazine/pharmacology
Chemical Substances	Adrenergic Agonists ; Hypnotics and Sedatives ; Imidazoles ; Xylazine (2KFG9TP5V8) ; Dexmedetomidine (67VB76HONO) ; detomidine (7N8K34P2XH) ; Medetomidine (MR15E85MQM)
Language	English
Publishing date	2022-01-11
Publishing country	England
Document type	Journal Article
ZDB-ID	2819409-3
ISSN	2053-1095 ; 2053-1095
ISSN (online)	2053-1095
ISSN	2053-1095
DOI	10.1002/vms3.732
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Article ; Online: Targeting the prefrontal-supplementary motor network in obsessive-compulsive disorder with intensified electrical stimulation in two dosages: a randomized, controlled trial.

Alizadehgoradel, Jaber / Molaei, Behnam / Barzegar Jalali, Khandan / Pouresmali, Asghar / Sharifi, Kiomars / Hallajian, Amir-Homayun / Nejati, Vahid / Glinski, Benedikt / Vicario, Carmelo M / Nitsche, Michael A / Salehinejad, Mohammad Ali

Translational psychiatry

2024 Volume 14, Issue 1, Page(s) 78

Abstract: Obsessive-compulsive disorder (OCD) is associated with a high disease burden, and treatment options are limited. We used intensified electrical stimulation in two dosages to target a main circuitry associated with the pathophysiology of OCD, left ... ...

Abstract	Obsessive-compulsive disorder (OCD) is associated with a high disease burden, and treatment options are limited. We used intensified electrical stimulation in two dosages to target a main circuitry associated with the pathophysiology of OCD, left dorsolateral prefrontal cortex (l-DLPFC), and pre-supplementary motor area (pre-SMA) and assessed clinical outcomes, neuropsychological performance, and brain physiology. In a double-blind, randomized controlled trial, thirty-nine patients with OCD were randomly assigned to three groups of sham, 2-mA, or 1-mA transcranial direct current stimulation (tDCS) targeting the l-DLPFC (F3) and pre-SMA (FC2) with anodal and cathodal stimulation respectively. The treatment included 10 sessions of 20-minute stimulation delivered twice per day with 20-min between-session intervals. Outcome measures were reduction in OCD symptoms, anxiety, and depressive states, performance on a neuropsychological test battery (response inhibition, working memory, attention), oscillatory brain activities, and functional connectivity. All outcome measures except EEG were examined at pre-intervention, post-intervention, and 1-month follow-up times. The 2-mA protocol significantly reduced OCD symptoms, anxiety, and depression states and improved quality of life after the intervention up to 1-month follow-up compared to the sham group, while the 1-mA protocol reduced OCD symptoms only in the follow-up and depressive state immediately after and 1-month following the intervention. Both protocols partially improved response inhibition, and the 2-mA protocol reduced attention bias to OCD-related stimuli and improved reaction time in working memory performance. Both protocols increased alpha oscillatory power, and the 2-mA protocol decreased delta power as well. Both protocols increased connectivity in higher frequency bands at frontal-central areas compared to the sham. Modulation of the prefrontal-supplementary motor network with intensified tDCS ameliorates OCD clinical symptoms and results in beneficial cognitive effects. The 2-mA intensified stimulation resulted in larger symptom reduction and improved more converging outcome variables related to therapeutic efficacy. These results support applying the intensified prefrontal-SMA tDCS in larger trials.
MeSH term(s)	Humans ; Transcranial Direct Current Stimulation/methods ; Treatment Outcome ; Quality of Life ; Motor Cortex ; Obsessive-Compulsive Disorder ; Double-Blind Method ; Prefrontal Cortex
Language	English
Publishing date	2024-02-05
Publishing country	United States
Document type	Randomized Controlled Trial ; Journal Article
ZDB-ID	2609311-X
ISSN	2158-3188 ; 2158-3188
ISSN (online)	2158-3188
ISSN	2158-3188
DOI	10.1038/s41398-024-02736-y
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Article ; Online: Evaluation of the sedative and physiological effects of xylazine, detomidine, medetomidine and dexmedetomidine in goats

Atefeh Nahvi / Mohammad Mahdi Molaei / Amir Saeed Samimi / Omid Azari / Hossein Mashayekhi / Fatemeh Ebrahimzadeh

Veterinary Medicine and Science, Vol 8, Iss 3, Pp 1205-

2022 Volume 1210

Abstract: Abstract Background Many α2‐agonists are commonly used for sedation and analgesia in ruminants. Introduction The present study aims to compare the sedative and physiological effects of intravenous (IV) administration of xylazine, detomidine, medetomidine ...

Abstract	Abstract Background Many α2‐agonists are commonly used for sedation and analgesia in ruminants. Introduction The present study aims to compare the sedative and physiological effects of intravenous (IV) administration of xylazine, detomidine, medetomidine and dexmedetomidine in goats. Methods Ten healthy goats aged 6 ± 1 months and weighing 15 ± 2 kg were used in experimental, crossover Latin square, randomised and blinded study. Animals were assigned to five IV treatments: control (normal saline); xylazine (100 μg kg−1); detomidine (50 μg kg−1); medetomidine (20 μg kg−1) and dexmedetomidine (5 μg kg−1). The degree of sedation was investigated using a numerical ranking scale of 0–10. Sedation scores were compared at each time using nonparametric (Kruskal–Wallis and Mann–Whitney U) tests. Results Heart rate (HR), respiratory rate (RR), rectal temperature (RT), ruminal motility and capillary refill time (CRT) were performed before (baseline) and after drug administration. Animals in α2‐adrenergic agonist treatments were sedated at 5–60 min. There were no significant differences among α2‐adrenergic agonist treatments at 5–60 min in sedation scores. HR significantly decreased from baseline 5–90 min after α2‐adrenergic agonists’ administration. Ruminal motility was decreased in α2‐adrenergic agonist treatments at 5, 90 and 120 min and absent at 10–60 min. A significant decrease from baseline in RR was detected between 30 and 90 min after α2‐adrenergic agonists’ administration. RT was unchanged in any treatment for 120 min. CRT was less than 2 s at all time points following each treatment. Conclusions The duration of sedation was up to 60 min after IV administration of xylazine (100 μg kg−1), detomidine (50 μg kg−1), medetomidine (20 μg kg−1) and dexmedetomidine (5 μg kg−1) in goats in this study. No significant differences were detected between xylazine, detomidine, medetomidine and dexmedetomidine in goats.
Keywords	α2‐adrenergic agonists ; goats ; physiological variables ; sedative effects ; Veterinary medicine ; SF600-1100
Subject code	630
Language	English
Publishing date	2022-05-01T00:00:00Z
Publisher	Wiley
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article: Comparative evaluation of the sedative and analgesic effects of caudal epidural administration of lidocaine alone or in combination with xylazine, detomidine, medetomidine and dexmedetomidine in Mediterranean miniature donkeys

Samimi, Amir Saeed / Molaei, Mohammad Mahdi / Azari, Omid / Rezaei, Mohammad Ali / Hashemian, Ali

Journal of equine veterinary science. 2022 Feb. 18,

2022

Abstract: The present study aimed to compare the sedative and analgesic effects of caudal epidural administration of lidocaine alone or in combination with four different α₂-adrenergic agonists in Mediterranean miniature donkeys. A total of ten clinically healthy ( ...

Abstract	The present study aimed to compare the sedative and analgesic effects of caudal epidural administration of lidocaine alone or in combination with four different α₂-adrenergic agonists in Mediterranean miniature donkeys. A total of ten clinically healthy (5 males and 5 females) Mediterranean miniature donkeys with an age of 5 ± 1 years, a weight of 100 ± 2 kg and a height at the withers of 0.8 ± 0.06 m (mean ± standard deviation) were used in experimental, crossover (Latin square), randomized and blinded study. Animals were assigned to five treatment groups including lidocaine alone (0.22 mg kg⁻¹), or associated with one among xylazine (0.17 mg kg⁻¹), detomidine (30 μg kg⁻¹), medetomidine (15 μg kg⁻¹), dexmedetomidine (5 μg kg⁻¹) with a minimum washout period of 8 days between treatments. The degree of sedation was investigated using a simple descriptive scale of 0–3. Sedation scores were compared at each time using nonparametric (Kruskal–Wallis and Mann–Whitney U) tests. Analgesia was assessed by pinprick test. Sedation was greater in lidocaine/α₂-adrenergic agonist groups than in lidocaine group at 45–75 minutes after drug administration (p < 0.05). There were no significant differences among groups in time to onset of analgesia and ataxia and also in number of animals with complete perineal analgesia and ataxia. Duration of analgesia and ataxia were longer in lidocaine/α₂-adrenergic agonist groups than in lidocaine (p < 0.05). There were no significant differences among lidocaine/α₂-adrenergic agonist groups in sedation score and duration of analgesia and ataxia. No significant differences were observed in heart and respiratory rate and also rectal temperature at any time points between groups and within groups. Caudal epidural administration of α₂- adrenergic agonists associated with lidocaine resulted in sedative effects on Mediterranean miniature donkeys, while lidocaine alone did not induce sedation. These drugs associations should be considered when superior analgesia is advocated.
Keywords	analgesia ; body temperature ; detomidine ; dexmedetomidine ; heart ; horses ; lidocaine ; medetomidine ; respiratory rate ; sedation ; standard deviation ; veterinary medicine ; withers ; xylazine
Language	English
Dates of publication	2022-0218
Publishing place	Elsevier Inc.
Document type	Article
Note	Pre-press version
ZDB-ID	2102631-2
ISSN	1542-7412 ; 0737-0806
ISSN (online)	1542-7412
ISSN	0737-0806
DOI	10.1016/j.jevs.2022.103915
Database	NAL-Catalogue (AGRICOLA)

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Article ; Online: Protecting healthcare workers against coronavirus disease 2019 in emergency departments at a teaching hospital in Tabriz, Iran: a best practice implementation project.

Talebpour, Amin / Hajebrahimi, Sakineh / Tavani, Fatemeh Molaei / Rahmani, Parvin / Ghabousian, Amir / Kabiri, Neda

JBI evidence implementation

2022 Volume 20, Issue 3, Page(s) 209–217

Abstract: Introduction: The first case of the novel coronavirus disease (COVID-19) in Iran was officially announced on February 19, 2020, in Qom city. The prevalence of COVID-19 is higher among frontline healthcare workers (HCWs) due to their occupational ... ...

Abstract	Introduction: The first case of the novel coronavirus disease (COVID-19) in Iran was officially announced on February 19, 2020, in Qom city. The prevalence of COVID-19 is higher among frontline healthcare workers (HCWs) due to their occupational exposure. Objective: The aim of this evidence implementation project was to improve the protection of nurses against COVID-19 in the emergency department of a teaching hospital in Tabriz, Iran. Methods: A clinical audit was undertaken using the JBI Practical Application of Clinical Evidence System (JBI PACES) tool. Ten audit criteria, representing the best practice recommendations for the protection of HCWs in the emergency department were used. A baseline audit was conducted, followed by the implementation of multiple strategies. The project was finalized with a follow-up audit to evaluate changes in practice. Results: The baseline audit results showed that the compliances for four (out of ten) audit criteria (criteria 4, 7, 8 and 9), were under 75%, which indicated poor and moderate compliance with the current evidence. After implementing plans such as running educational programs and meetings, major improvement was observed in 3 criteria, criterion 4 was improved from low to excellent (41-81%), criterion 7 was promoted from low to moderate (30-62%), criterion 8 was not promoted considerably (22-27%) and criterion 9 was improved from moderate to excellent (70-84%). Conclusion: The results of the audit process increased COVID-19 protection measures for nurses in the emergency department. It can be concluded that educational programs and tools, such as face-to-face training, educational pamphlets, workshops and meetings can facilitate the implementation of evidence into practice.
MeSH term(s)	Humans ; COVID-19/epidemiology ; COVID-19/prevention & control ; Evidence-Based Practice ; Iran/epidemiology ; Emergency Service, Hospital ; Health Personnel ; Hospitals, Teaching
Language	English
Publishing date	2022-09-01
Publishing country	United States
Document type	Case Reports ; Journal Article
ISSN	2691-3321
ISSN (online)	2691-3321
DOI	10.1097/XEB.0000000000000335
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