Summary of Global Knowledge on Breakfast

(Leila. G. Saldanha) 대한영양사협회 1997 대한영양사협회 학술지 Vol.3 No.2

Hydrogen Gas Detection Using MOS Capacitor Sensor Based on Palladium Nanoparticles-Gate

Leila Fekri Aval,Seyed Mohammad Elahi 대한금속·재료학회 2017 ELECTRONIC MATERIALS LETTERS Vol.13 No.1

In this study a palladium nanoparticles-gate MOS capacitorhydrogen sensor with Pd/SiO2/Si structure has been fabricated. The palladium nanoparticles by chemical method aresynthesized and then characterized by transmission electronmicroscope (TEM), X-ray diffraction (XRD) and UV-VISspectrum. Also, the preferred orientation and grain size of thepalladium nanoparticles have been studied. Hydrogen absorptionand desorption of the palladium nanoparticles at the low andhigh pressure and as function of time have been investigated. The sensing mechanism of the hydrogen detection by MOScapacitor sensor has been explained and theoretical andexperimental results have been compared. At 287 K, comparedto another Pd MOS capacitor hydrogen sensor and ultrathin Pd MOS capacitor, the palladium nanoparticles gate MOS capacitorshowed much faster response and recovery speed. The time interval for reaching to 95% of the steady state signal magnitude(t95%) for 1% and 2% hydrogen in nitrogen were 2 s and 1.5 s respectively. The time interval for recovery transients from 95% to10% of steady state signal magnitude (t10%) for 1% and 2% hydrogen in nitrogen were 10 s and 11 s respectively. The presentedsensor illustrates a designing of hydrogen detectors with very fast response and recovery speed.

Association between perception of caring behaviors and self-efficacy in patients with cardiovascular disease at coronary care units: a cross-sectional study

Leila Kargarfard,Zahra Khademian,Masoume Rambod 대한중환자의학회 2021 Acute and Critical Care Vol.36 No.2

Background: Assessing and improving patient self-efficacy are among the major roles of nurses. Nurses are also responsible for providing direct patient care, and they play a major role in improving patient care quality. Therefore, it is essential to evaluate nurses’ care-giving behaviors. This study aimed to determine the association between caring behaviors and self-efficacy in patients with cardiovascular disease. Methods: In this cross-sectional study, 400 patients with cardiovascular disease who were admitted to hospitals in Jahrom, southern Iran, were selected through a stratified sampling. The Caring Behaviors Inventory and the Strategies Used by People to Promote Health questionnaires were used to collect data. Data were analyzed using descriptive statistics, Kolmogorov-Smirnov test and Spearman correlation coefficient in SPSS ver. 22. Results: Results showed significant relationships between perception of caring behaviors and self-efficacy (r=0.16, P=0.001) as well as subscales of respectful deference to others (r=0.12, P=0.01), assurance of human presence (r=0.12, P=0.02), and positive connectedness (r=0.18, P=0.001). Additionally, among the subscales of caring behaviors, “attentive to others’ experience,” with a mean of 5.17±1.10, was the highest priority and “positive connectedness,” with a mean of 4.81±1.31, was the lowest priority for patients. The mean self-efficacy score was 73.94±29.78, and 169 patients (43.2%) had low self-efficacy. Conclusions: Given the positive relationship between perception of caring behaviors and self-efficacy in patients with cardiovascular disease, self-efficacy could be improved by paying more attention to patient care priorities and improving patient perception of caring behaviors.

Migration Processes in Central Asia - Key Trends and Challenges. A Glance from Kazakhstan

( Leila F. Delovarova ) 건국대학교 이주사회통합연구소 2022 Journal of Migration and Social Integration (JMSI) Vol.7 No.1

Migration processes in Central Asia have been part of the global process of transformation of modern international relations and contribution to the development. Migration and mobility in the region have undergone significant changes during last three decades. Reflecting almost all of the global migration trends this space have their own characteristics and features. Considering the general trends in the region, it should be noted that all types of migration are active - seasonal labor migration, forced migration, frontier migrations and transit migrations, repatriation. The main trends in Central Asia are labor migration, the steady growth of irregular migration, educational migration, feminization and family migration. The key focus of this article is the international immigration situation in Kazakhstan in the field of low-skilled and unskilled labor migration with some overview the whole migration profile including some aspects of immigration policy and international cooperation. One of the key trends is labor migration - low-skilled or unskilled labor migration which is mostly directed to Russia and Kazakhstan. Kazakhstan has a diversified migration profile and it is an active participant in regional and extra-regional migration processes. Kazakhstan is mostly perceives itself as a host state. The fundamentals of migration policy are focused on attracting compatriots “kandas”, on attracting highly skilled labor and on balancing internal migration. Along with the official involvement of foreign labor, the situation on the labor market has evolved in such a way that there has been and continues to be a need for foreign labor at various levels. The main challenges of labor migration processes lie in the situation and status of migrants, ensuring their rights, integration into the local community and decent working conditions. The pandemic, which has swept all over the world, has most affected vulnerable groups of the population, including migrants with an unprotected legal status. To review and analyze these aspects, it seems important to look at such aspects as the cooperation of all involved countries, the analysis of national, international legislation and international interaction, including the role of the non-governmental sector and the migrant networks themselves.

Effectiveness of Multidisciplinary Group-Based Intervention versus Individual Physiotherapy for Improving Chronic Low Back Pain in Nursing Staff: A Clinical Trial with 3- and 6-Month Follow-Up Visits from Tehran, Iran

Leila Ghadyani,Sedigheh Sadat Tavafian,Anoshirvan Kazemnejad,Joan Wagner 대한척추외과학회 2017 Asian Spine Journal Vol.11 No.3

Study Design: Clinical trial. Purpose: To evaluate the effectiveness of a multidisciplinary group-based intervention on improving pain and disability among Iranian nurses with chronic low back pain in Tehran, Iran. Overview of Literature: Although low back pain (LBP) is one of the most important health problems, the challenge remains on how to find an effective intervention to reduce pain and related disabilities. Methods: Overall, 136 eligible nurses with chronic mechanical LBP were classified into two groups. The intervention group (n=66 participants) participated in a physiotherapy educational program (for 120 minutes) plus a health educational program based on predictive constructs of the social cognitive theory (for 120 minutes). These interventions were delivered by a physiotherapist and a health education specialist. The control group (n=70 participants) participated in a physiotherapy educational program (for 120 minutes). Disability rate, pain severity, and back pain prevention behavior were measured initially and at 3- and 6-month follow-up visits using the visual analogue scale, Roland-Morris Disability, and Nursing Low Back Pain Preventive Behaviors Questionnaire. Data were analyzed by SPSS ver. 16. Results: There were statistically significant differences between the two groups in the main outcome measures immediately after the educational program and at 3- and 6-month follow-up visits. Preventive behaviors of participants in the intervention group were improved at 3- and 6- month follow-up visits (p <0.001). The mean scores of predictive constructs regarding LBP preventive behaviors in the intervention group were improved after 3 and 6 months (p <0.001). Finally, in the intervention group, pain severity and disability were decreased significantly. Conclusions: This study showed that a multidisciplinary educational program intervention can be an effective approach for reducing LBP and related disabilities among nurses.

Mucoadhesive Chitosan Electrospun Nanofibers Containing Tetracycline and Triamcinolone as a Drug Delivery System

Leila Behbood,Soroush Karimi,Esmaeil Mirzaei,Ghobad Mohammadi,Mahsa Azami,Elham Arkan 한국섬유공학회 2018 Fibers and polymers Vol.19 No.7

The mucoadhesive Chitosan (CS) nanofibers as a drug delivery system were developed. Chitosan was modified via the immobilization of thiol groups from L-cysteine as a mucoadhesive reagent. The mucoadhesive properties of the chitosan nanofibers were evaluated by tensiometer set and via tensile studies. Drug and mucoadhesive agent loading lead to decrease diameters and increased porous of nanofibers. The release of Tetracycline (Tet) and Triamcinolone (Tri) were increased with increasing immersion time and it became constant at long immersion times. Mucoadhesion studies were done at pH 2-7 and in pH 6 maximum mucoadhesive properties observed. Release studies demonstrated a sustained release of both drug continued up to 48 hours. Microbial studies were performed on the nanofibers. The drug delivery system represented a novel tool for improve the therapeutic efficacy of various drugs that are poorly absorbed from the gastrointestinal tract. Also it is an efficient system for treatment of oral ulceration.

Assessing the Performance of Offshore Firms in Tunisia

Leila Baghdadi,Sonia Ben Kheder,Hassen Arouri 세종대학교 경제통합연구소 2019 Journal of Economic Integration Vol.34 No.1

This paper examines the performance of offshore firms in Tunisia for the period 2002~2014. Using firm-level data, we analyze the impact of offshoring on turnover, productivity, wages and firm survival. Overall, offshore firms perform better with respect to all of these indicators. However, in the specific case of offshore firms that export and import at the same time, called two-way offshoring, performance is weaker across the board compared to their onshore counterparts. Lower productivity of offshore firms engaged in both exporting and importing suggests that these firms are low performers and that they self-select the offshore regime to reduce their fixed costs associated with exporting. The survival analysis highlights an increased probability that these types of firms will exit the market once tariffs and tax exemption privileges end, usually after 10 years. Thus, incentives provided in the Tunisian Investment Code are primarily attracting firms in the lower rungs of global value chains.

Radiological Aspects of PET Cyclotrons operating in Korea

Leila Mokhtari Oranj,Nam-Suk Jung,Arim Lee,Hee-Seock Lee 대한방사선방어학회 2019 대한방사선방어학회 학술발표회 논문요약집 Vol.2019 No.04

Experimental study of the behavior of composite timber columns confined with hollow rectangular steel sections under compression

Leila Razavian,Morteza Naghipour,Mahdi Shariati,Maryam Safa 국제구조공학회 2020 Structural Engineering and Mechanics, An Int'l Jou Vol.74 No.1

There are separate merits and demerits to wood and steel. The combination of wood and steel as a compound section is able to improve the properties of both and ultimately increase their final bearing capacity. The composite cross-section made of steel and wood has higher hardness while showing more ductility and the local buckling of steel is delayed or completely prevented. The purpose of this study is to investigate the behavior of composite columns enclosed in wooden logs and the hollow sections of steel that will be examined in a laboratory environment under the axial load to determine the final bearing capacity and sample deformation. In terms of methodology, steel sheet and carbon fiber reinforced polymer sheet (FRP) are tested to construct hollow rectangular sections and reinforce timber. Besides, the method of connecting hollow sections and timber including glue and screw has been also investigated. As a result, timber lumber enclosed with carbon fiber-reinforced polymer sheets in which fibers are horizontally located at 90 ° are more resistant with better ductility.

Tetracycline degradation using combined system of dielectric barrier discharge air plasma and zeolites synthesized at different Na2O/SiO2 ratios

Leila Feyzi,Nader Rahemi,Somaiyeh Allahyari 한국공업화학회 2021 Journal of Industrial and Engineering Chemistry Vol.104 No.-

In this work, a combination of synthesized zeolite with a Dielectric Barrier Discharge (DBD) air plasmareactor was applied for the removal of tetracycline (TC) from effluents. The zeolites with differentNa2O/SiO2 ratios were synthesized and inserted in a DBD reactor. The as-prepared zeolites were characterizedby FTIR, SEM, BET, EDX, XRD, and TEM. The XRD results showed that the P-type zeolite turned toY-type zeolite with an increasing Na2/SiO2 ratio from 0.5 to 1.5 and 2.5. The TC degradation experimentsindicated that 79.1% of the initial TC was removed from the solution by the hybrid plasma- zeolite (Na2O/SiO2 ratio of 0.5) system after 45 min. The plasma in synergy with zeolite caused the changing amount oflong-life oxidants in the system and converted it to higher reactive species. The combined system couldreduce around 17 and 10% of the total organic carbon (TOC) and chemical oxygen demand (COD) morethan the sole DBD system, respectively. Losing just 8% of the initial efficiency of the hybrid system afterfour successive runs revealed the stability of the proposed system. The radical trapping experimentmethod indicated that the role of OH in the TC degradation was more critical than that of O2.