Present Research Research Articles

Evaluation of Service Quality of Clinical Diagnostic Using the SERVQUAL and SERVPERF Models in Two Simple and Weighted Types

Background: Recently, a number of papers have discussed the importance of evaluating service quality provided to customers. The purpose of this study is evaluating service quality of clinical diagnostic in Yazd Central Laboratory from customers’ point of views using the SERVQUAL and SERVPERF models in two simple and weighted types, and also, identifying the most suitable model for service quality evaluation. Methods: The present research was applied research in terms of purpose and descriptive-analytical in terms of method. According to Morgan's table, the statistical sample of this research included 250 people who referred to Yazd central laboratory in September 2023; they were selected by simple random sampling method and a valid and reliable questionnaire with 33 items which was distributed among them. In the next step, to analyze the data collected from the questionnaire, SPSS 16 software was used to analyze Kolmogorov–Smirnov test, Student's t-test, analysis of variance, Fisher's Z test, and least squares method. Results: The findings indicated that the expectations of service recipients are greater than their perceptions of the quality of the services received. The correlation coefficient between the overall satisfaction of the clients and the services and the level of service quality in the SERVPERF model (r = 0.7060) has a higher value than the weighted SERVPERF model (r = 0.6913), SERVQUAL model (r = 0.6890) and weighted SERVQUAL model (r = 0.6344). Moreover, the most valid models for measuring the quality of medical diagnosis services were respectively as follows: SERVPERF, weighted SERVPERF, SERVQUAL and weighted SERVQUAL. Conclusion: Based on the research findings, it is recommended that managers consider the needs and demands of the clients in their future planning in order to improve the quality of services in medical diagnosis services, which are relatively more difficult to evaluate. Also, the level of standards required to provide health services in clinical diagnosis laboratories should be explained to the clients so that they have correct expectations and perceptions of the quality of services.

How and when negative workplace gossip influences service sabotage behavior? A study among hotel frontline employees in China

Purpose Drawing upon the conservation of resources (COR) theory, this study aims to examine whether ego depletion mediates the relationship between negative workplace gossip and employees’ service sabotage behavior and whether psychological resilience moderates the relationship between negative workplace gossip and service sabotage behavior through the mediator of ego depletion among hotel frontline employees and their colleagues. Design/methodology/approach A paired sample was collected at three-time points from employees and their colleagues working in hotels in Guizhou province, China. The PROCESS macro for SPSS was applied to examine the moderated mediation model. Findings The results showed that negative workplace gossip has a positive effect on employee service sabotage behavior, and that ego depletion mediates the relationship between negative workplace gossip and employee service sabotage behavior. Psychological resilience weakens the relationship between negative workplace gossip and ego depletion, as well as the indirect effect of negative workplace gossip on employee service sabotage behavior through ego depletion. Originality/value The present research provides a thorough understanding of when and how negative workplace gossip influences employee service sabotage behavior in the hospitality industry. The findings of this moderated mediation relationship expanded the boundary conditions of negative workplace gossip and employee service sabotage behavior.

Designing a Career Networking Model with an Interpretative Structural Approach

Aim: The purpose of this study is to identify and determine the level of factors affecting career networking behavior. Methods: This research is mixed research with a qualitative-quantitative approach. Library search was used to examine the theoretical foundations, semi-structured interviews were used to collect data, and questionnaires were used to collect the ideas of academic experts. Theme analysis was used to identify factors. In the qualitative part, 15 people were selected from the managers of government organizations in Qom province with the purposeful sampling method in order to identify the factors. In the qualitative part, 14 people were selected from the professors of Farabi Campus and Qom University with the snowball sampling method in order to validate the factors and also compare the factors two by two. Results: Based on the findings of the present research, 31 codes were categorized into 8 factors. The validity of all the factors was confirmed with the Lawshe’s coefficient and the interpretive structural modeling method was used in order to level 8 factors. Finally, 8 factors were prioritized in 5 levels; Customized appointments and mendacious personal branding on the first level, creating toxic communication networks on the second level, distrust of employees to mechanisms on the third level, decision-making by advocacy groups on the fourth level, inefficient supervision, unclear rules and regulations and senior management style were placed at the fifth level. Conclusion: Based on the findings of the research, each of the factors related to career networking can lead to the success of employees in career promotion. Therefore, it is necessary for the managers of the organization to maintain effective human resources by using appropriate mechanisms in order to improve the growth and development of competent employees.

Identifying the Factors Affecting e -learning by Synthesis of Research from Databases of (1389 to 1402 SH) and (2010 to 2023 AD)

Introduction: Given the importance of empathy in caring for patients, this study investigated the level of empathy and its associated factors among medical residents at Ahvaz Jundishapur University of Medical Sciences (AJUMS). Electronic education is a type of educational program that stems from the impact of technology, utilized to facilitate the learning process. Its purpose is to use this educational technology and its effects on the learning process, and the present research seeks the main factors affecting electronic education. Method: The method of this research is qualitative and synthesis research, the statistical population, numerous types of research that have been conducted in domestic and foreign articles in the period(1389-1402 SH) and (2010-2023 AD), and analyzed the 6-step model of Roberts' research synthesis was used and in the data reliability check from the provided framework, four criteria; believability, transferability, reliability, and confirmability were used. Results: The findings in this research showed that the effective dimensions in electronic education include technology-oriented, need-oriented, learning-oriented, communication-oriented, program-oriented, obstacle-oriented, motivation-oriented, and development-oriented dimensions, respectively. Conclusion: In this study, we found that given that e-education is used in all sciences, this research is a suitable model for learners.

Development of Ultrasound-Processed Poppy (Papaver rhoeas L.) Sherbet Enriched with Bee Bread Using Response Surface Methodology: Changes in Shelf Life.

This research aimed to investigate the effects of ultrasound treatment on the quality characteristics of optimized functional bee bread-enriched poppy sherbet. Antioxidant activity capacity, antimicrobial activity, phenolic compounds, ascorbic acid, organic acid and sugar composition, and sensory properties were performed under storage conditions. The present research was the first to express the effect of ultrasound on the bioactive components in a functional poppy sherbet enriched with bread, using the response surface methodology (RSM) optimization. The maximum optimization, radical scavenging activity (DPPH), total phenolic content (TPC), total anthocyanin content (TAC), and general acceptability values were determined. When comparing the 0th- and 21st-day samples of bee bread-fortified functional poppy sherbets, it was observed that the TPC was decreased (p < 0.05). It was also noted that there was no significant decrease in the total flavonoids on day 21. In storage, a decrease in anthocyanin content was observed. Among phenolic compounds, gallic acid had the highest content. While citric acid was found in the highest amount of organic acid, sucrose (6.25 g/L) was found in the highest amount of sugar components 0th day, while MIC values against Micrococcus luteus were lower. The data from this study will be important input for future work.

Mapping the current trends and hotspots of adult hippocampal neurogenesis from 2004-2023: a bibliometric analysis.

We utilized bibliometric and data visualization techniques to discern the primary research domains and emerging frontiers in the field of adult hippocampal neurogenesis (AHN). We systematically searched the Web of Science database for AHN-related articles published between 2004 and 2023. The retrieved articles were filtered based on publication types (articles and reviews) and language (English). We employed CiteSpace, VOSviewer, and the online bibliometric platform (bibliometric.com) to visualize and analyze the collected data. In total, 1,590 AHN-related publications were discovered, exhibiting a steady increase in yearly publications over time. The United States emerged as the leading contributor in AHN research in terms of both publication quantity and national influence. Among all research institutions in the field of AHN, the University of California System exhibited the highest impact. Kempermann, Gerd was the most active author. The publications of the top three active authors primarily focused on the functions of AHN, and reversing hippocampal damage and cognitive impairment by improving AHN. An analysis of reference co-citation clustering revealed 8 distinct research clusters, and the notable ones included "adult hippocampal neurogenesis," "neurogenesis," "hippocampus," "dentate gyrus," "neural stem cell," and "depression." Additionally, a burst keyword detection indicated that 'anxiety' is a current research hotspot in the field of AHN. This in-depth bibliographic assessment of AHN offers a deeper insight into the present research hotspots in the field. The association between AHN and cognitive diseases, such as Alzheimer's disease (AD) and anxiety, has emerged as a prominent research hotspot.

Regulatory Mechanism of Proanthocyanidins in Grape Peels Using vvi-miR828a and Its Target Gene VvMYBPA1.

Anthocyanins and proanthocyanidins are considered to be essential secondary metabolites in grapes and are used to regulate metabolic processes, while miRNAs are involved in their synthesis of anthocyanins and proanthocyanidins to regulate metabolic processes. The present research work was carried out to investigate the underlying regulatory mechanism of target genes in the grape cultivars 'Italia' and 'Benitaka'. miRNA and transnscriptomic sequencing technology were employed to characterize both the profiles of miRNAs and the transcripts of grape peels at 10 and 11 weeks post flowering (10 wpf and 11 wpf). The results revealed that the expression level of vvi-miR828a in 'Italia' at 10 and 11 wpf was significantly higher than that in 'Benitaka'. miRNA-seq analysis predicted MYBPA1 to be the target gene of vvi-miR828a. In transcriptome analysis, the expression level of the VvMYBPA1 gene in 'Benitaka' was significantly higher than that in 'Italia'; in addition, the TPM values (expression levels) of VvMYBPA1 and miR828a also showed an evident negative correlation. The determination of the proanthocyanidin (PA) content in 'Italia' and 'Benitaka' peels at 11 wpf demonstrated that the PA content of 'Benitaka' was significantly higher than that of 'Italia'. The outcomes of RT-qRCR analysis exhibited that the expression levels of the VdPAL, VdCHS, VdCHI, VdDFR, VdMYB5b, VdANR, and VdMYBPA1 genes related anthocyanin and proanthocyanidin pathways were reduced, while the expression levels of all of the above genes were increased after the transient expression of the VvMYBPA1 vector into grape leaves. The results of the transient overexpression experiment of vvi-miR828a before the veraison period of strawberry fruits showed that vvi-miR828a can significantly slow down the coloration of strawberries. The vvi-miR828a negatively regulates the accumulation of proanthocyanidins in grape fruits by inhibiting the expression of VvMYBPA1.

Working Like a Dog: A Mixed-Method Study of Public Support for Police Dogs and Their Utilities

ABSTRACT Working dogs play integral roles across many human workplaces. This is no exception in the criminal justice system, and policing more specifically, where police dogs are used in various capacities. Many questions remain, however, regarding the public’s perceptions of dogs in different working contexts. Drawing upon data from a sample of Canadian and American adults (n = 201) obtained via Amazon’s Mechanical Turk, the present research explores public perceptions of working dogs’ utilities, with an emphasis on police dogs. The findings reveal that while participants overwhelmingly supported working dogs in health and wellbeing contexts, they expressed more mixed perceptions regarding police dogs. The findings also reveal that police dogs’ utilities are related to participants’ overall support for police dogs, but that the specific relationship varies as a function of the utility. Amidst growing concerns regarding the use of police dogs, these findings may help police organizations incorporate evidence-based decision-making related to the deployment of police dogs moving forward.

Simultaneous Approximation for an Exponential Operator Connected with x4/3

Very recently, the authors in [5] proposed the exponential-type operator connected with and studied its convergence estimates. In the present research, we extend the study and obtain the general form of its 𝑝-th order moment; 𝑝 ∈ ℕ ∪ {0}. Further, we establish the simultaneous approximation for the operator under consideration.

IPFS-blockchain-based delegation model for internet of medical robotics things telesurgery system

The concept of the Internet of Medical Robotics Things (IoMRT) is where intelligent robots assess surrounding events, combine information from their sensors, use both local and dispersed intelligence to determine the best course of action, and move or command objects. Telesurgery is one application of IoMRT (TS). With 5G-enabled Tactile Internet (TI) enabling telesurgery (TS), there is ample opportunity to provide exceptional, accurate, ultra-responsive, and real-time virtual surgical procedures. The potential for accurate surgical diagnosis involving the exchange of patient electronic medical records (EMR) with several doctors using an assistant robot (AR) could be greatly useful in the medical field. As a part of this, permission delegation has emerged as a novel approach for data sharing in TI. Robust control of access guidelines combined with a configurable permission scheme promise secure EMR exchange. The present research proposes a multi-hop permission delegation strategy for EMR exchange based on blockchain technology and with configurable delegation depth. Furthermore, the original EMRs are stored on the interplanetary file system (IPFS). Permission delegation uses smart contracts and proxy re-encryption technology. Attribute-based encryption, which offers fine-grained management of access, is used to guarantee data security. Blockchain is also utilized to accomplish immutability and traceability. Delegators may regulate the depth of delegation by using smart contracts. The suggested approach satisfies the intended aims, according to analysis of the protocol. Lastly, the Ethereum test chain is used to assess and put the suggested method into practice. The outcomes of the conducted experiments demonstrate that the suggested protocol operates better than the competitors.

Molecular expression, purification and structural characterization of recombinant L-Glutaminase from Streptomyces roseolus

The present research reports the anti-cancer potential of recombinant L-Glutaminase from Streptomyces roseolus. L-Glutaminase gene was synthesized by codon-optimization, cloned and successfully expressed in E. coli BL21 (DE3). Affinity purified recombinant L-Glutaminase revealed a molecular mass of 32 kDa. Purified recombinant L-Glutaminase revealed stability at pH 7.0–8.0 with optimum activity at 70 °C further indicating its thermostable nature based on thermodynamic characterization. Recombinant L-Glutaminase exhibited profound stability in the presence of several biochemical parameters and demonstrated its metalloenzyme nature and was also found to be highly specific towards favorable substrate (l-Glutamine) based on kinetics. It demonstrated antioxidant property and pronounced cytotoxic effect against breast cancer (MCF-7 cell lines) in a dose dependent behavior with IC50 of 40.68 μg/mL. Matrix-assisted laser desorption ionization-time of flight-mass spectroscopy (MALDI-TOF-MS) analysis of desired mass peaks ascertained the recombinant L-Glutaminase identity. N-terminal amino acid sequence characterization through Edman degradation revealed highest resemblance for L-glutaminase within the Streptomyces sp. family. The purified protein was characterized structurally and functionally by employing spectroscopic methods like Raman, circular dichroism and nuclear magnetic resonance. The thermostability was assessed by thermogravimetric analysis. The outcomes of the study, suggests the promising application of recombinant L-Glutaminase as targeted therapeutic candidate for breast cancer.

Long term reactivity operation for a high temperature testing reactor (HTTR) loaded with uranium nitride fuel

A High Temperature Testing Reactor (HTTR) is one of the fourth generation nuclear reactors, the reactor uses UO2 as typical fuel with different axial and radial enrichments. In the present research, uranium nitride (UN) is proposed as a fuel for the reactor for the same core enrichment distribution. The core multiplication factor, cycle length, discharge burnup are calculated and the results of UO2 fuel are compared with UN fuel results. Neutron spectrum, fissile isotopes behavior and Breeding capability are compared for the two fuel types. Kinetic parameters, Control rods and Burnable poisons worth are also evaluated. The results indicated that uranium nitride (UN) has a longer fuel cycle, higher breeding capability and harder thermal flux compared to UO2 fuel.

Additive manufacturing of Fe28.2Mn32.9Ni18.8Cr6Al14.1 high-entropy alloy by applying consumable fillers of metal powders and polyvinyl alcohol

Simultaneous application of welding methods and metal additive manufacturing facilitates the production of various 3D physical samples from metals and alloys. One of the technical impediments, especially for additive manufacturing of high entropy alloys, is the variety of elements in their chemical composition that makes the fabrication of fillers in welding methods very challenging. In the present research, the additive manufacturing of Fe28.2Mn32.9Ni18.8Cr6Al14.1 high entropy alloy with the use of consumable fillers, including metal powders and polyvinyl alcohol binder through gas tungsten arc welding process has been investigated. To perform the gas tungsten arc welding process, the experiments were designed using the Taguchi method. The parameters of current, torch angle, torch speed, and substrate temperature were selected as the input parameters. Then, through Grey analysis, the optimum width and height of the weld bead were determined to deposit thin layers with high height and low width. The results of the experiments confirmed that the proposed method for fabricating consumable fillers successfully performed layer-by-layer deposition of the sample using the gas tungsten arc welding process. Moreover, the elemental mapping images proved the presence of all elements in the Fe28.2Mn32.9Ni18.8Cr6Al14.1 sample. Furthermore, no internal voids were detected upon inspection of the fabricated sample using a micro-computed tomography scanner.

An energy-aware cluster-based routing in the Internet of things using particle swarm optimization algorithm and fuzzy clustering

The effectiveness and longevity of IoT infrastructures heavily depend on the limitations posed by communication, multi-hop data transfers, and the inherent difficulties of wireless links. In dealing with these challenges, routing, and data transmission procedures are critical. Among the fundamental concerns are the attainment of energy efficiency and an ideal distribution of loads among sensing devices, given the restricted energy resources at the disposal of IoT devices. To meet these challenges, the present research suggests a novel hybrid energy-aware IoT routing approach that mixes the Particle Swarm Optimization (PSO) algorithm and fuzzy clustering. The approach begins with a fuzzy clustering algorithm to initially group sensor nodes by their geographical location and assign them to clusters determined by a certain probability. The proposed method includes a fitness function considering energy consumption and distance factors. This feature guides the optimization process and aims to balance energy efficiency and data transmission distance. The hierarchical topology uses the advanced PSO algorithm to identify the cluster head nodes. The MATLAB simulator shows that our method outperforms previous approaches. Various metrics have demonstrated significant improvements over DEEC and LEACH. The method reduces energy consumption by 52% and 16%, improves throughput by 112% and 10%, increases packet delivery rates by 83% and 15%, and extends the network lifespan by 48% and 27%, respectively, compared to DEEC and LEACH approaches.

An Evaluation on the Effect of Differences in Recitations on Islamic Law: Within the Context of Intercourse with a Woman After Menstruation

The main source of Islam is the Holy Qur'ān. Qirā’a is the branch of science that deals with the different ways of reciting the words of the Qur'ān. For this reason, the science of qirā’a has a special place and importance among the basic Islamic sciences. The fact that the Qur'ān ranks first among the primary evidences in Islamic jurisprudence methodology has made it directly related to the science of qirā’a. At the beginning of Islam, the verses revealed were transmitted firsthand by the Prophet (PBUH) to his companions, who in turn would teach these verses to others. The differences in reciting that existed in this process led to the types of qirā’a called 'seven ahruf/letters'. Believers would first learn the different qirā’āt that they heard from the Prophet (PBUH) and then pass them on to the others. However, in addition to the authentic qirā’āt, the unauthentic qirā’āt that emerged over time directly affected the Islamic legal doctrine. Especially the differences in the most accurate understanding of the divine word led to the emergence of differences of opinion among Islamic jurists. This, in turn, was the source of the divergence of jurisprudential groups. These divergences between the groups based on the differences in qirā’a have come to the agenda depending on the issues of Islamic law, sometimes usūl and sometimes furū’. These debates have led to different jurisprudential approaches depending on the different interpretations of the verses, which has led to mental turmoil among Muslims. In this study, the impact of qirā’a differences on Islamic legal doctrine is analyzed. In this context, the issue of intercourse with a woman after menstruation, one of the issues of jurisprudence, is discussed., Regarding this, in the text the concept of qirā’a, its types, and the reasons for the emergence of qirā’a differences are first evaluated. For a better understanding of the issue, the approaches of the four fiqh schools to the differences of qirā’a are also examined in a general way. Then, the jurisprudential aspect of the concept of menstruation, the way it is expressed in the verse, and the differences of qirā’a on the related verse are examined, and the legal consequences that arise due to these different qirā’āt are explained. As far as can be detected in the process, most of the studies in the field of basic Islamic sciences are carried out in the form of subject analysis under a specific discipline. Unlike the general studies in the literature, in this research, a fundamental issue related to Islamic law and qirā’a, which is among the basic disciplines of Islamic sciences, has been addressed, which reveals the strong bond and interaction between the two disciplines. In order to have a better understanding of the subject of the present research, special attention has been given to include the fundamental sources of the science of qirā’a along with Islamic law.

Study of the effect of spark radius model upon the performance characteristics in EDM process

The evaluation of performance characteristics is of key importance to the EDM process technological reliability. By correctly estimating the power fraction and plasma flushing efficiency, it is possible to improve the accuracy of the surface integrity prediction of the EDM discharge models. In the present research, a combined computational and experimental approach is employed to study the effect of spark radius model upon the performance characteristics in EDM of Ti-6Al-4V alloy. Two famous spark radius relationships have been implemented and the effect on power fraction and removal efficiency was examined for a range of machining conditions. It has been found that the sparking radius relationship accounting for discharge current effect captures the essential dynamics of the EDM process and offers improved prediction accuracy. In such a case, the power fraction going to the cathode ranges from 8.5 to 24 %. When a cooper electrode is utilized, removal efficiency of up to 12 % was observed on the cathode surface. For specific machining conditions, an approximate constant ratio of 2.5 is seen between the power fractions transmitted to the cathode and tool-anode. Crater volume was computed and compared to the experiment to validate the proposed approach. The results of this comparison challenge the EDM model underlying assumption viability, which considers similarity between recast layer and electrode materials thermophysical proprieties when a hydrocarbon-based dielectric fluid is used. From a qualitative perspective, though, the outcomes are still encouraging and indicate that surface integrity in the EDM of Ti-6Al-4V alloy may be predicted using the performance characteristics found in this study.

Effect of continuous workshop training of the helping babies breathe program on the retention of midwives' knowledge and skills: A clinical trial study

AimTo investigate the impact of ongoing workshop training of the "Helping Babies Breathe" program on the durability of midwives' knowledge and skills. BackgroundImplementing the Helping Babies Breathe (HBB) program is crucial as a simple protocol for neonatal resuscitation in low-resource healthcare settings to decrease the rate of asphyxia and perinatal mortality by the initial healthcare providers. In addition to training in this program, it is also essential to guarantee the retention of the acquired knowledge and skills. DesignA quasi-experimental clinical trial study with a single-group, pre-test-and-post-test design. MethodsThis study was conducted throughout the year 2022, with a sample size of 61 midwives selected through a census sampling from those working in the delivery and operating rooms of X Hospital in x City. The midwives participated in 3-hour workshops. This study was performed in two stages: intervention and follow-up. The evaluation Instruments included the HBB educational package, which consisted of a questionnaire and 3 Objective Structured Clinical Exams. During the intervention phase, the HBB program training was conducted through a series of workshops held at four different time points over a span of six months. In the follow-up stage, the learners were not provided with any further training. The evaluation was done immediately after the initial training workshop of the HBB program, at the end of the final workshop in the sixth month and at the end of the follow-up period. ResultsThe mean knowledge score of the baseline, at six months and at twelve months after the initial workshop were documented as (17 SD1.2), (17.79 SD 0.4) and (17.73 SD 0.5), respectively. There was a statistically significant difference in the mean knowledge scores between the baseline and the six and twelve months (P<0.05), but no statistically significant difference was observed between six and twelve months (P>0.05).The mean skill scores showed a significant improvement and were maintained after six months compared with the initial assessment (P<0.05); however, there was a significant decrease in skill score twelve months later, in comparison to both the initial assessment and the first six months (P<0.05). ConclusionsHealthcare workers can maintain their knowledge and skills by participating in ongoing training workshops. However, without continuous training, their skills may diminish. Therefore, it is essential to implement training programs that emphasize regular practice and repetition to ensure knowledge and skills retention. Registration numberThe present research was a part of the research work with the ethics ID IR.IRSHUMS.REC.1400.019.

Evaluation of Mesiodistal Angulation of Maxillary Anterior Teeth in Incisal View Using Manual and Digital Methods: An In Vivo Study.

The aim of the present research was to assess the mesiodistal angulation of the maxillary anterior teeth utilizing Image J computer software, a Profile projector, and a Custom-made jig. A total of 34 subjects (17 males and 17 females) were chosen from a group of 18-30 years old with bilateral Angle Class I molars and canine relationships. One manual approach (Custom-made jig) and two digital methods (J computer software, a Profile projector) were used to record the mesiodistal angulation in incisal view. The individuals had alginate impressions made, and a facebow was used to capture the maxilla's spatial relationship with the cranium. The articulated cast with the help of mounting ring moved to the specially customized jig, then the angulations was measured in the incisal view after the casts were placed in a semi-adjustable articulator. Data were recorded and statistically analyzed. The mesiodistal angulation in the incisal view via three methods between the 17 males and 17 females has statistically significant different. Although the mesiodistal angulation for maxillary lateral incisor and canine did not show any statistically significant difference, the maximum and minimum values obtained were always greater in males in comparison with the females. This indicates that the positions of six maxillary anterior teeth in the males resulted in the creation of upward sweep of incisal edges of central and lateral incisors which was also referred to as "smiling line" producing masculine surface anatomy more squared and vigorous while feminine surface anatomy being more rounded, soft, and pleasant. There was no statistically significant difference between the right and left sides, indicating bilateral arch symmetry and the symmetrical place of the right teeth compared with the left side's corresponding teeth. On conclusion, according to the current study's findings, all three approaches can measure the mesiodistal angulations of maxillary anterior teeth in incisal view with clinically acceptable accuracy. The digital methods, which included using the Image J computer software and the profile projector, achieved more accurate results than the manual method. The outcomes of this study's mesiodistal angulations can be used as a reference for placing teeth in both fully and partially edentulous conditions. This study contributes to a better understanding of the importance of achieving the ideal occlusion in the Indian population by placing the maxillary anterior teeth at the proper mesiodistal angulation. How to cite this article: Shadaksharappa SH, Lahiri B, Kamath AG, et al. Evaluation of Mesiodistal Angulation of Maxillary Anterior Teeth in Incisal View Using Manual and Digital Methods: An In Vivo Study. J Contemp Dent Pract 2024;25(4):320-325.

Salvia tiliifolia leaf extract-based silver nanoparticles for colorimetric detection of Hg(II) in food and environmental samples

In the present research, we provide easy, quick, ultrasensitive, inexpensive, and non-toxic plasmonic sensors using silver nanoparticles (AgNPs). The AgNPs were biosynthesized utilizing Salvia tiliifolia leaf extract and well characterized by various techniques, and then employed to design a colorimetric method enabling Hg(II) sensing. The designed sensor seems very sensitive as well as specific for Hg(II), having limits of detection at 5.0 nM and 0.27 nM through the naked eye and UV–vis detection, sequentially. In addition, the technique showed good precision (intra- and inter-day RSD values were 2.4 % and 4.9 %, respectively) as well as linearity (R2 = 0.9984 over the 0.1–100 µM interval). The actual utilization of the proposed AgNPs-based sensors has been examined in various real samples, including wastewater effluent, lake water, drinking water, soft drinks, mineral water, and canned light tuna. The percentages of recovery of the tested samples varied from 88.0 % to 110 %, demonstrating the method's considerable application. In a nutshell, the method is greener, has tremendous advantages, and has been suggested to detect Hg(II) in foods and environmental samples.

The Behavior of Long Thin Rectangular Plates under Normal Pressure-A Thorough Investigation.

Thin rectangular plates are considered basic structures in various sectors like aerospace, civil, and mechanical engineering. Moreover, isotropic and laminated composite plates subjected to transverse normal loading and undergoing small and large deflections have been extensively studied and published in the literature. Yet, it seems that the particular case of long thin plates having a high aspect ratio appears to be almost ignored by various scholars despite its engineering importance. The present study tries to fill this gap, yielding novel findings regarding the structural behavior of long thin plates in the small- and large-deflection regimes. In contrast to what is normally assumed in the literature, namely that a long plate with a high aspect ratio can be considered an infinitely long plate, the present results clearly show that the structural effects of the ends continue to exist near the remote ends of the long plate. An innovative finding is that long plates would (only on movable boundary conditions for the large-deflection regime) exhibit a larger mid-width displacement in comparison with deflections of infinitely long plates. This innovative higher deflection appears for both small and large-deflection regimes for both all-around simply supported and all-around clamped boundary conditions. This new finding was shown to be valid for both isotropic and orthotropic materials and presents a novel engineering approach for the old assumption well quoted in the literature that a relatively long plate on any boundary condition can be considered an infinite plate. Based on the present research, it is recommended that this assumption should be used carefully as the largest plate mid-deflection might occur at finite aspect ratios.