Secure updating and sharing for large amounts of healthcare information (such as medical data on coronavirus disease 2019 [COVID-19]) in efficient and secure transmission are important but challenging in communication channels amongst hospitals. In particular, in addressing the above challenges, two issues are faced, namely, those related to confidentiality and integrity of their health data and to network failure that may cause concerns about data availability. To the authors? knowledge, no study provides secure updating and sharing solution for large amounts of healthcare information in communication channels amongst hospitals. Therefore, this study proposes and discusses a novel steganography-based blockchain method in the spatial domain as a solution. The novelty of the proposed method is the removal and addition of new particles in the particle swarm optimisation (PSO) algorithm. In addition, hash function can hide secret medical COVID-19 data in hospital databases whilst providin.....

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The second most predominant cancer in the world and the first among women is breast cancer. We aimed to study the protein abundance profiles induced by lectin purified from the Agaricus bisporus mushroom (ABL) and conjugated with CaCO3NPs in the MCF-7 breast cancer cell line. Two-dimensional electrophoresis (2-DE) and orbitrap mass spectrometry techniques were used to reveal the protein abundance pattern induced by lectin. Flow cytometric analysis showed the accumulation of ABL-CaCO3NPs treated cells in the G1 phase than the positive control. Thirteen proteins were found different in their abundance in breast cancer cells after 24 h exposure to lectin conjugated with CaCO3NPs. Most of the identified proteins were showing a low abundance in ABL-CaCO3NPs treated cells in comparison to the positive and negative controls, including V-set and immunoglobulin domain, serum albumin, actin cytoplasmic 1, triosephosphate isomerase, tropomyosin alpha-4 chain, and endoplasmic reticulum chaperone B.....

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In the dynamic world of technology, changes and transformations have emerged rapidly in recent years. Service providers such as government departments transformed their services from e-government to m-government for widespread customer reach. However, several issues existed that were obstructing the implementation of such a system by the Ministry of Housing in Oman, especially in rural areas. This study proposes a novel framework based on the fuzzy delphi and TOPSIS models to provide digital literacy and services. This framework considered the variables extracted from previous studies. Furthermore, a survey was conducted on 20 experts to determine the accepted variables. Thirty-five pre-service engineers evaluated the questionnaires using TOPSIS to determine the skills of pre-service engineers based on delphi criteria outcomes. The conceptual framework developed from the accepted results uses 11 different variables based on the TAM model. The study benefits the stakeholders in the area.....

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The need to identify effective measures to minimize continuous poor academic performance of students in blocklaying and concreting works and other technical subjects/trades led to this study which sought the effectiveness of Future-wheel as compared to the problem solving approach in the instruction in technical colleges. The study adopted the non-equivalent control group quasi experimental research design. Six research questions and six null hypotheses guided the study. The study was conducted in Edo State, Nigeria. The population for the study consisted of all 604 vocational II blocklaying and concreting works students in the six technical colleges in Edo State as at 2017/2018 academic session. A sample size of 80 vocational II students was drawn using random sampling technique and used for the study. Findings from the study revealed among others that there was significant mean effect of Futures-Wheel instructional strategy on students Mean performance score and interest in blocklayi.....

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The purpose of this study was to examine the sprint time and cardiovascular fitness among professional soccer players during in-season's training sessions. Thirty participants who officially registered as Perbadanan Kemajuan Negeri Perak Football (PKNP) Club professional soccer players participated in this study. Data were collected during actual in-season training sessions from December 2016 to April 2017. Sprint time performance was determined by the 20m sprint test and 20m Yoyo Intermittent Recovery Test Level 1 was used to determine the cardiovascular fitness level of the players. Repeated Measures and Pearson Correlation Coefficient was used to analyzed the data, there was significant improvement (p..

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Nitrogen stress condition is believed to increase the production of lipid in microalgae, but the synthesis of both lipid and carbohydrate is less known. Therefore, the effect of nitrogen stress condition on the synthesis of lipid and carbohydrate of Tetradesmus obliquus UPSI-JRM02 was studied in a 2 L bioreactor system. The highest lipid and carbohydrate yields achieved under nitrogen stress condition were 37% and 23%, respectively. Nitrogen stress condition induced the accumulation of carbohydrate at early stage but started to reduce on day 4 when the carbon shifted towards lipid production. The fatty acid profile produced under nitrogen stress condition was composed of 54% polyunsaturated fatty acid (PUFA), 43% saturated fatty acid (SFA) and 3% monounsaturated fatty acid (MUFA). The biofuel properties of T. obliquus obtained under the nitrogen stress condition was within the range of biodiesel standard and is most suitable for the usage in cold country. ? 2021 Penerbit UTM Press. All.....

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Innovation of synthetic dyes successfully eliminated the utilisation of natural materials as textile dyes. Simplicity as well as variety of colours strongly increased the application of synthetic dyes. Nevertheless, environmental concern has lately forced the use of natural dyes. To simplify the usage of natural dyes, production of natural dyes powder is inevitable. Investigation was carried out to examine the effects of solvent and filler types on the yield, chromaticity, flavonoid content, and water content of natural dyes powder. In this work, Brachiaria mutica was used as a sample source. It was crushed and grinded before extracted using mixture of methanol and water as solvents at various methanol concentration of 25%, 50%, 75%, and 100%. Extraction was carried out at a ratio of raw materials to solvent of 1:10. The filler of maltodextrine or gum arabic was added into dye extract before then converted into powder form by the aid of spray dryer. It was found that among the provided.....

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at enterprises that process secondary copper raw materials, it is customary to extract copper from the spent electrolyte by electroextraction. After electroextraction, the solution is neutralized with lime milk to obtain a gypsum nickel-containing cake or evaporated with the release of a cake containing metal sulfates (Cu, Ni, Zn, Fe), which is sold as a commercial product. The search for effective technological solutions for the selective isolation of secondary non-ferrous metals during the regeneration and complete utilization of copper electro fining solutions is relevant. The paper presents studies of the processing of spent copper electrolyte from the processing of non-ferrous metal scrap at a copper smelter in Kazakhstan. For the processing of the spent electrolyte, a stage-by-stage neutralization was performed using zinc sublimates and potash. As a result of the first stage of neutralization with zinc sublimations to pH 4.7, a precipitate with a content of PbO 44.69 %; Sn?2 16,3.....

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This study aims to identify the role of problem-solving skills as mediator in the relationship between the learning environment and mathematics achievement among secondary school students. This study uses survey method involving a total of 333 Form Four students from ten secondary schools who were selected using two-stage stratified sampling technique. Data were analyzed using the Structural Equation Modelling technique, in which direct and indirect effects between variables were identified. Findings show that the direct effect between learning environment and achievement has decreased from 0.548 (p ..

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Ground reaction force (GRF) is a key metric in biomechanical research, including parameters of loading rate (LR), first impact peak, second impact peak, and transient between first and second impact peaks in heel strike runners. The GRFs vary over time during stance. This study was aimed to investigate the variances of GRFs in rearfoot striking runners across incremental speeds. Thirty female and male runners joined the running tests on the instrumented treadmill with speeds of 2.7, 3.0, 3.3, and 3.7 m/s. The discrete parameters of vertical average loading rate in the current study are consistent with the literature findings. The principal component analysis was modeled to investigate the main variances (95%) in the GRFs over stance. The females varied in the magnitude of braking and propulsive forces (PC1, 84.93%), whereas the male runners varied in the timing of propulsion (PC1, 53.38%). The female runners dominantly varied in the transient between the first and second peaks of verti.....

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