Comparison of different digital shade selection methodologies in terms of accuracy

Nurşen Şahin,Çağrı Ural 대한치과보철학회 2024 The Journal of Advanced Prosthodontics Vol.16 No.1

Purpose. The aim of this stuldy was to compare the clinical marginal fit of CAD-CAM inlays obtained from intraoral digital impression or addition silicone impression techniques. Materials and Methods. The study included 31 inlays for prosthodontics purposes of 31 patients: 15 based on intraoral digital impressions (DI group); and 16 based on a conventional impression technique (CI group). Inlays included occlusal and a non-occlusal surface. Inlays were milled in ceramic. The inlay-teeth interface was replicated by placing each inlay in its corresponding uncemented clinical preparation and taking interface impressions with silicone material from occlusal and free surfaces. Interface analysis was made using white light confocal microscopy (WLCM) (scanning area: 694 × 510 μm2) from the impression samples. The gap size and the inlay overextension were measured from the microscopy topographies. For analytical purposes (i.e., 95-%-confidence intervals calculations and P-value calculations), the procedure REGRESS in SUDAAN was used to account for clustering (i.e., multiple measurements). For p-value calculation, the log transformation of the dependent variables was used to normalize the distributions. Results. Marginal fit values for occlusal and free surfaces were affected by the type of impression. There were no differences between surfaces (occlusal vs. free). Gap obtained for DI group was 164 ± 84 μm and that for CI group was 209 ± 104 μm, and there were statistical differences between them (p = .041). Mean overextension values were 60 ± 59 μm for DI group and 67 ± 73 μm for CI group, and there were no differences between then (p = .553). Conclusion. Digital impression achieved inlays with higher clinical marginal fit and performed better than the conventional silicone materials.

Overexpression of sense and antisense ced-9 in tobacco plants confers resistance to Meloidogyne incognita

Alejandro Caldero´n-Urrea,Fumiko Yamamoto,Thihan Padukkavidana,Abdellatif Bahaji,Davis W. Cheng,Glenda W. Polack 한국식물생명공학회 2012 Plant biotechnology reports Vol.6 No.4

Transgenic tobacco plants expressing the Caenorhabditis elegans programmed cell death gene ced-9, in both sense and antisense orientations, were produced using Agrobacterium tumefaciens-mediated transformation. The generated transgenic tobacco plants were tested for resistance to the root-knot nematode Meloidogyne incognita by measuring gall formation, size of galls generated, and the ability of juvenile-2 (J2) to hatch. Results showed that expression of ced-9 gene in either sense (ced-9F) or antisense (ced-9R) orientation in hemizygous transgenic tobacco plants induced prevention of M. incognita proliferation (as measured by gall number reduction) and J2hatching. Furthermore, the results also showed that ced-9R in homozygous transgenic tobacco plants prevented J2hatching, whereas ced-9F homozygous transgenic tobacco plants lost nematicidal function. Although our study demonstrates that expression of either ced-9R or ced-9F genes in tobacco plants significantly reduces infection by M. incognita, further investigation is required to understand the specific mechanisms involved for this control. It is possible that the nematode resistance seen with both sense (ced-9F) and antisense (ced-9R) sequences is the result of two independent mechanisms, one acting on invading nematodes and the other acting during embryogenesis of M. incognita, ultimately resulting in plant protection.

Immobilization of Glucose Oxidase Attached to New Nanospheres Including Azomethine

Nurbanu Özdem,Nurşen Sarı,Elvan Hasanoğlu Özkan,Fatma Arslan,Hayrettin Tümtürk 한국고분자학회 2014 Macromolecular Research Vol.22 No.12

New nanosphere supports were prepared and characterized for the immobilization of glucose oxidasefrom Aspergillus niger. Nanoparticles ((APS-tio), (APS-tioCH3), and (APS-tioCl)) modified (aminomethyl)polystyrene(APS) with some tyophenealdehyde derivatives were synthesized by means of condensation and we investigated the enzymaticproperties of glucose oxidase enzyme (GOx) immobilized on them. Modified polystyrene was characterized by IRspectra, gel permeation chromatography and scanning electron microscopy. Immobilized GOx on (APS-tioCH3) showed aoptimum pH, whereas immobilized GOx on (APS-tio) and (APS-tioCl) performed the optimum condition at two pHs.

Factors Influencing Corporate Donations Among Shariah-Compliant Companies in Malaysia

Nur Diyana Izzati Mohamed SHAARI(Nur Diyana Izzati Mohamed SHAARI ),Mazurina Mohd ALI(Mazurina Mohd ALI ),Suhaily HASNAN(Suhaily HASNAN ),Nassr Saleh Mohamad AHMAD(Nassr Saleh Mohamad AHMAD ) 한국유통과학회 2023 The Journal of Asian Finance, Economics and Busine Vol.10 No.1

Within the context of publicly traded Sharia-compliant companies in Malaysia, this study investigated the influence that board and company characteristics have on corporate donations. The primary focus of the study was (i) two board characteristics derived from upper echelons theory, namely gender composition and education level, and (ii) four firm variables derived from stakeholder theory, specifically company size, profitability, leverage, and industry category. This study used a total of 402 Shariah-compliant companies that operated in accordance with Shariah law. The information utilized in this study was culled by hand from the annual reports of various companies covering the years 2017 through 2019. According to the findings, the educational level of a company’s board of directors has a significant impact on the amount of money donated to charitable organizations by Shariah-compliant companies. The level of expertise possessed by board members can be of assistance to businesses in becoming more aware of the necessity of making contributions or donations. Corporate contribution practices among Shariah-compliant companies in Malaysia were also significantly influenced by the firm’s size, profitability, and the industry category in which the business was classified. The findings of the study contribute to a better understanding of the impact that board and company variables have on the activities of corporate donors.

Self-Portrait: Consciousness

Nur Ariff Hafizi Nur-Hakimi,Nor Hidayu Mohd Salimi 한국디자인학회 2021 한국디자인학회 국제초대전도록 Vol.2021 No.5

The Effects of COVID-19 on Unemployment in Realising Sustainable Development Goals: Evidence from Malaysia

Nur Syuhada JASNI(Nur Syuhada JASNI ),Siti Nurhazwani KAMARUDIN(Siti Nurhazwani KAMARUDIN ),Azmira ABDULLAH(Azmira ABDULLAH ) 한국유통과학회 2023 The Journal of Asian Finance, Economics and Busine Vol.10 No.1

The coronavirus (COVID-19) pandemic poses disastrous effects on human lives and hinders global efforts to realize the Sustainable Development Goals (SDGs) by 2030. The study examined the effects of the pandemic on unemployment toward realizing the SDGs. The downsizing and collapse of businesses have forcibly left many unfortunate Malaysians jobless and without income. The situation may directly influence government efforts to achieve SDG 8 ‘Decent work and economic growth’, which indirectly affects SDG 1 ‘No poverty’, SDG 2 ‘Zero hunger’, and SDG 3 ‘Good health and well-being’. Pre-and post-pandemic assessments on unemployment and retrenchment level by sector were performed by adopting observation and data comparison methods. Critical findings revealed that the unemployment rate has risen among males and females and the youth, as well as the number of retrenchments. The services sector, specifically the wholesale, retail, trade, and hotel industry showed the highest number of retrenchments. Some important unemployment issues were also covered in this study, including the demand for employment, the role of government and business, and the effect of the gig economy on the current employment landscape. The avenue for future studies can focus on additional societal effects that could prevent the country from attaining the SDGs by 2030.

Review on finite element analysis of dental implants

Fatma Nur Büyük(Fatma Nur Büyük ),Efe Savran(Efe Savran ),Fatih Karpat(Fatih Karpat ) 대한치과이식임플란트학회 2022 The Korean Academy of Implant Dentistry Vol.41 No.3

Dental implants are structures of high importance, as in other implant studies used in the biomedical field. The jawbone is a structure of such importance that it affects the nutritional functions of the living thing with which it is integrated. Therefore, intervention in this structure is of high importance. Parts for use in the biomedical field can be produced using numerical analysis, thus saving time and cost. In addition, the level of trust increases in the living being where the dental implant is applied. This paper reviews studies using the finite element method for the numerical analysis of dental implants. The analysis revealed important conditions, such as groove type, material, osseointegration status, splinting, dimensions, neck region, and fatigue strength of the dental implant.

Oxytocin Levels in Children with Separation Anxiety and Their Mothers before and after Treatment

Nur Seda Gülcü Üstün,Şefika Nur Gümüş,Nusret Soylu 대한정신약물학회 2023 CLINICAL PSYCHOPHARMACOLOGY AND NEUROSCIENCE Vol.21 No.3

Objective: The purpose of this study was to compare the plasma oxytocin levels of children with separation anxiety disorder (SAD) and their mothers with those of healthy controls and to examine the relationship between oxytocin levels and changes in anxiety three months after treatment. Methods: Thirty children aged 6−12 years with SAD, 30 healthy children, and mothers of both groups were included in the study. All cases were evaluated with semi-structured interview and Clinical Global Impression Scale. All cases and mothers of both groups filled out scales to determine various psychological variables (anxiety, depression, and attachment). The patient group children were re-evaluated with their mothers after three months, following treatment. Plasma oxytocin levels were evaluated from both groups and their mothers before and after treatment. Results: The plasma oxytocin levels of mothers of children with SAD were significantly lower than those of the controls and increased significantly three months after their children were treated. No difference was found between the plasma oxytocin levels of children with SAD and the control group, and these children’s levels decreased significantly after treatment. A positive correlation was found between changes in the plasma oxytocin levels of children with SAD and the change in anxiety scores. Conclusion: Our results show that the change in plasma oxytocin levels in both children and mothers after treatment suggests that oxytocin may be important in the etiology of SAD.

Factors Affecting Organizational Performance

Nur LAILY,Nur Fadjrih ASYIK,Triyonowati TRIYONOWATI,Titik MILDAWATI 한국유통과학회 2021 The Journal of Asian Finance, Economics and Busine Vol.8 No.6

The knowledge management concept is a valuable instrument for improving organizational performance. The purpose of this research is to investigate the effect of knowledge sharing and organizational learning on innovation and organizational performance, the innovation role as a mediator of knowledge sharing and organizational learning. This is causality research with a sample comprising of 217 managers of manufacturing companies in East Java, Indonesia. Primary data were obtained using an instrument in the form of a questionnaire and analyzed using the PLS-SEM approach. The SMART-PLS is a measurement model and structural equation used to explain the relationship between variables and the mediating effects. The results showed knowledge sharing and organizational learning had a direct effect on innovation and organizational performance. Furthermore, the findings show that innovation was able to mediate the impact of organizational learning on organizational performance, but was unable to mediate knowledge sharing on organizational performance. This research confirms the positive influence of innovation and shows that it plays an essential role in mediating between variables, and it is important for organizational performance. This research has important practical implications for companies regarding the importance of implementing knowledge sharing, organizational learning, and innovation due to their proven ability to improve organizational performance.

Emerging polymeric-based material with photocatalytic functionality for sustainable technologies

Nur Shamimie Nadzwin Hasnan,Mohamad Azuwa Mohamed,Nornastasha Azida Anuar,Muhamad Firdaus Abdul Sukur,Siti Fairus Mohd Yusoff,Wan Nur Aini Wan Mokhtar,Zul Adlan Mohd Hir,Norshahidatul Akmar Mohd Shoha 한국공업화학회 2022 Journal of Industrial and Engineering Chemistry Vol.113 No.-

A variety of polymer-based photocatalysts for the highest photocatalytic activity through various modificationsand improvements such as doping, treatment with the oxidising or reducing agent, and integratinganother nanomaterial into the polymer photocatalysts composite are extensively studied. Furthermore, the most common issues on polymer-based photocatalysts, including wide band gap andhigh recombination rate of charge carriers, still need to be improved to yield high photocatalytic activity. Besides hydrogen evolution through the water splitting system, focus also has been paid to photocatalyticfor CO2 reduction, photodegradation of pollutants, photocatalytic chemical synthesis, and photocatalyticnitrogen fixation. This review attempts to reveal the secret of properties, issues, and enhancements, principallyin polymer photocatalysts, besides highlighting the reason for polymeric material as a critical nonmetal-based photocatalyst for various photocatalytic reactions, as well as conducting polymeric materialwith photocatalytic functionality.