Study on optical and structural properties of lithium zinc phosphate glasses / Nurul Ain Abd Malek

Glasses with chemical composition of (60 - x)P2O5-25ZnO-(15 + x)Li2O with 0.0 ≤ x ≤ 5.0 mol% are prepared by melt quenching technique. The glass properties dependence of LhO content were investigated. The physical properties, by mean of density and molar volume are determined. The amorphous nature, optical absorption and structural behaviour are characterized using X-ray diffraction (XRD), ultraviolet-visible-near infrared (UV-Vis-NIR) and Fourier Transform Infrared (FTIR) respectively. In this work, the glass densities are found increases in the range of 2.6991 gcm-3 to 2.7848 gcm-3 and molar volume decreases from 40.7450 gcm-3 to 37.4839 gcm-3 with respect to LhO concentration. Meanwhile, the optical band gap by mean of their direct and indirect transition is found ranging from 2.5253 eV to 3.0737 eV and 1.6700 eV to 2.6990 eV respectively. The Urbach energy was found varies from 0.9594 eV to 3.4454 eV. Meanwhile, the refractive index is found vary from 2.4833 to 2.8952. The FTIR spectra exhibited seven bands which centered at 512 cm-I, 767 cm-I , 918cm-l, 1087cm-I, 1281 cm-I, 1627 cm-I and 3441 cm-I wavenumber that assigned as vibration of Zn-O, symmetric stretching vibration of P-O-P rings, asymmetric stretching vibration of P-O-P groups, asymmetric stretching of P02- group, asymmetric stretching vibration P=O, bending vibration of water molecule and fundamental stretching of hydroxyl group

Two-Dimensional Transition Metal Dichalcogenide as Electron Transport Layer of Perovskite Solar Cells

Conventional perovskite solar cells utilize a combination of a compact and mesoporous layer of TiO2 or SnO2 as the electron transport layer. This structure is vulnerable to massive loss of photogenerated carriers due to grain boundary resistance in the layer. In this chapter, we will discuss a potential electron transport layer that might drive higher power conversion efficiency, i.e., thin and single-crystalline 2D transition metal dichalcogenide. Because of their ultimate thin structure, they facilitate rapid electron transport and enhanced carrier extraction in the solar cells device. We will also discuss the current state of the art of 2D transition metal dichalcogenide atomic layer application as an electron transport layer in the perovskite solar cells as well as our recent attempt in this field

Development and validation of D-PATH website to improve hypertension management among hypertensive patients in Malaysia

Objective This study aimed at developing and validating a web application on hypertension management called the D-PATH website. Methods The website development involved three stages: content analysis, web development, and validation. The model of Internet Intervention was used to guide the development of the website, in addition to other learning and multimedia theories. The content was developed based on literature reviews and clinical guidelines on hypertension. Then, thirteen experts evaluated the website using Fuzzy Delphi Technique. Results The website was successfully developed and contains six learning units. Thirteen experts rated the website based on content themes, presentation, interactivity, and instructional strategies. All experts reached a consensus that the web is acceptable to be used for nutrition education intervention. Conclusion D-PATH is a valid web-based educational tool ready to be used to help disseminate information on dietary and physical activity to manage hypertension. This web application was suitable for sharing information on dietary and physical activity recommendations for hypertension patients

Ultra-thin MoS2 nanosheet for electron transport layer of perovskite solar cells

status: publishe

sj-docx-1-dhj-10.1177_20552076241242661 - Supplemental material for Development and validation of D-PATH website to improve hypertension management among hypertensive patients in Malaysia

Supplemental material, sj-docx-1-dhj-10.1177_20552076241242661 for Development and validation of D-PATH website to improve hypertension management among hypertensive patients in Malaysia by Mohd Ramadan Ab Hamid, Siti Sabariah Buhari, Harrinni Md Noor, Nurul ‘Ain Azizan, Khasnur Abd Malek, Ummi Mohlisi Mohd Asmawi and Norazmir Md Nor in DIGITAL HEALTH</p

Enhancing the interfacial carrier dynamic in perovskite solar cells with an ultra-thin single-crystalline nanograss-like TiO2 electron transport layer

status: publishe

Pancreatic surgery outcomes: multicentre prospective snapshot study in 67 countries

Background: Pancreatic surgery remains associated with high morbidity rates. Although postoperative mortality appears to have improved with specialization, the outcomes reported in the literature reflect the activity of highly specialized centres. The aim of this study was to evaluate the outcomes following pancreatic surgery worldwide.Methods: This was an international, prospective, multicentre, cross-sectional snapshot study of consecutive patients undergoing pancreatic operations worldwide in a 3-month interval in 2021. The primary outcome was postoperative mortality within 90 days of surgery. Multivariable logistic regression was used to explore relationships with Human Development Index (HDI) and other parameters.Results: A total of 4223 patients from 67 countries were analysed. A complication of any severity was detected in 68.7 percent of patients (2901 of 4223). Major complication rates (Clavien-Dindo grade at least IIIa) were 24, 18, and 27 percent, and mortality rates were 10, 5, and 5 per cent in low-to-middle-, high-, and very high-HDI countries respectively. The 90-day postoperative mortality rate was 5.4 per cent (229 of 4223) overall, but was significantly higher in the low-to-middle-HDI group (adjusted OR 2.88, 95 per cent c.i. 1.80 to 4.48). The overall failure-to-rescue rate was 21 percent; however, it was 41 per cent in low-to-middle-compared with 19 per cent in very high-HDI countries.Conclusion: Excess mortality in low-to-middle-HDI countries could be attributable to failure to rescue of patients from severe complications. The authors call for a collaborative response from international and regional associations of pancreatic surgeons to address management related to death from postoperative complications to tackle the global disparities in the outcomes of pancreatic surgery (NCT04652271; ISRCTN95140761)