Glowflex Enterprise : Glow In The Dark Paint / Nur Alisha Mohammad Zarafi ...[et al.]

As for the business, we are producing a glow in the dark paint for Malaysian. People nowadays want something that simple, easy to use and act effectively but also at reasonable price. We made our paint in convenient packaging form to reduce our cost and market price and also easy to use. Through our long term research and observation, we had planned to set up this business because we can see wider prospect of this sector in the future. Apart from that, we have observed that there are a few competitors that involves in this business. So, we take these opportunities to expand our business because we are qualified with skills

Development Of Test Vessel For Gas Insulation Breakdown Test

This paper discusses a new test vessel developed to investigate the breakdown test performance of gas insulation. The test vessel is equipped with certain specialty including pressure chamber and control measures. Through help from a steering, it is provide of controlling the gap length of the electrodes without the need of removing the gas. Other control measures include humidity, temperature, and pressure readings. The humidity and temperature are read wirelessly and from the readings, the necessary atmospheric corrections can be made according to standards. The developed vessel is then tested with AC breakdown test using air with various gap lengths and various electrode configurations. There are two types of electrode configuration used in this project i.e., rod (R0.5)-plane and plane-plan

Parametric Investigation Of SF6 Gas Mixtures For Ring Main Unit (RMU) Switchgear Application

In high voltage applications, sulphur hexafluoride (SF6) gas has been utilized as the electrical insulation and/or current interrupter due to its strong electronegative properties. However, in Kyoto Protocol 1997, SF6 has been recognized as one of the greenhouse gases which contribute to the global warming issues, thus need to regulate its usage and emission to the atmosphere. As one of the effort to minimize the usage of SF6, this research project conducts the investigation on the breakdown behavior of SF6 gas mixtures (i.e. SF6/N2 and SF6/CO2), specifically for ring main unit (RMU) switchgear application. In order to examine the breakdown behavior of the SF6 gas mixtures, a series of breakdown voltage test were conducted under AC voltage stress at pressure range between 1.1 bar to 1.5 bar, which is typically used for this type of switchgear. In this research, the SF6 content in both SF6 gas mixtures was varied between 10 % to 30 %. On the other hand, two types of electrodes configurations were used (i.e. R0.5-plane and R6-plane) to represents different non-uniform field condition during the breakdown voltage test, where the gap distance between the electrodes was varied from 5 mm to 30 mm. As a function of SF6 gas mixture ratio, the results show that the mean AC breakdown voltage (Ua) values of SF6/N2 and SF6/CO2 gas mixtures at all pressure levels increases when the SF6 content in the gas mixture is increased. However, the Ua value increment of SF6 gas mixtures is found to be less significant when the amount of SF6 amount is increased above 10 %. By focusing on the gas mixture ratio with 10 % amount of SF6, it was observed that the Ua values of SF6/N2 (10/90) and SF6/CO2 (10/90) gas mixtures under both electrode configurations increase with the increase of gas pressure and electrodes gap distance. Between these two effects, the analysis of variance (ANOVA) results obtained from multiple regression analysis have shown that the electrode gaps distance gives the most significant effect to cause the Ua values of SF6/N2 (10/90) and SF6/CO2 (10/90) gas mixtures to increase compared to gas pressure, due to its high percentage of contribution. In addition, the comparison between the Ua values of SF6/ CO2 (10/90) and SF6/N2 (10/90) have been made and it was found that the Ua values of SF6/CO2 (10/90) are higher than SF6/N2 (10/90), especially under high electric field non-uniformity. In this research, the electric field behavior under R0.5-plane and R6-plane configurations has been investigated using COMSOL Multiphysics software. The simulation results show that a more non-uniform electric field exists between the electrodes when R0.5-plane is used compared to R6-plane and the electric field non-uniformity between the electrodes increases with the increasing gap distance. This indicates that SF6/CO2 (10/90) perform better than SF6/N2 (10/90) in suppressing the breakdown streamer when high non-uniform electric field exists between the electrodes. Lastly, it was observed that although with 10 % amount of SF6, the Ua values of SF6/N2 and SF6/CO2 gas mixtures could reach about 48 % and above as relatives to pure SF6, throughout all gap distances and pressure levels under both electrode configurations

Switchable erbium-doped fiber laser (EDFL) using non-adiabatic microfiber

We have investigated the operation principle of the switchable EDFL which stands for the erbium-doped fiber laser, where a non-adiabatic microfiber has been fabricated and used. Utilizing the flame-brushing technique, the optical microfiber has been fabricated and afterward, it has been inserted into the EDFL cavity, therefore by proposing the setup configuration, the single and multi-wavelength laser could be generated. By applying the different filtering effects of the microfiber, the results of a single wavelength laser (one set), dual-wavelength laser (three sets) and triple wavelength laser (two sets) could be generated over a wavelength range of 1560–1565 nm. The signal to noise ratio (SNR) of 42–50 dB is obtained from the experiment with acceptable wavelength and power fluctuation over the test period of 30 min. Proposed switchable EDFL shows tunable and stable single and multi-wavelength laser generation in C band region. © 2019 Elsevier Inc

Systematic Review of Comparative Patient Reported Outcomes and Health-Related Quality of Life After Management of Localized Renal Masses or Renal Cell Carcinomas

ObjectiveTo perform a systematic review assessing the impact of the different management options on health-related quality of life (HRQoL) of patients with localized renal masses or renal cell carcinomas (LRM/LRCC). Materials and MethodsSearches covering PubMed, Embase (Ovid), CENTRAL, PsycINFO (Ovid), CINAHL (EBSCO), and Cochrane Central Register of Controlled Trials (CENTRAL) databases was conducted for papers published up to 25 April 2021. Methods as per Cochrane Handbook were followed. “Modality” of treatment included radical nephrectomy (RN), nephron-sparing surgery (NSS), thermal ablation (TA), and active surveillance (AS). “Approach” was categorized as open incision and minimally invasive surgery (MIS). Risk of bias was assessed by ROBINS-I and Cochrane RoB 2 for observational studies and randomized controlled trials, respectively and certainty of the evidence by GRADE. ResultsSixteen observational studies and 1 randomized controlled trial (2.370 patients) met inclusion criteria. Fifteen different patient reported outcome measures (PROMs) were identified. Heterogeneity prevented quantitative analysis.Generic HRQoL decreases after RN and NSS, recovers within 6 to 12 months, and mostly overlaps with baseline values, irrespective of modality. Cancer-specific HRQoL improves faster after open-NSS than open-RN. The detrimental effect of RN may persist long-term in cross-evaluations. QoL scales significantly decrease after open surgery and MIS during the first weeks but improve faster after MIS. They are similar for both approaches at 1 year. Long-term cancer-specific QoL is similar for MIS and open procedures. Fear of recurrence is lower in older patients and affected by neither modality nor approach. ConclusionsLow quality evidence supports the use of MIS over the open approach when HRQoL is considered in the management of LRMs/LRCCs; data regarding the effect of the treatment modality of the LRM/LRCC show contradictory outcomes

Systematic Review of Comparative Patient Reported Outcomes and Health-Related Quality of Life after Management of Localized Renal Masses or Renal Cell Carcinomas

Funding: L.S. received funding from Cure for Cancer Acknowledgements: We would like to thank Professor Christian Beisland (Norway) and Professor Abhay Rane (United Kingdom) for responding to our queries on their studies.Peer reviewedPublisher PD

Topographically Distinguished Microbiome Taxonomy and Stress-Response Genes of Royal Belum Rainforest and Raja Muda Musa Peat Swamp Revealed through Metagenomic Inquisition

Soil ecosystems are home to a diverse range of microorganisms, but they are only partially understood because no single-cell sequencing or whole-community sequencing provides a complete picture of these complex communities. Using one of such metagenomics approaches, we succeeded in monitoring the microbial diversity and stress-response gene in the soil samples. This study aims to test whether known differences in taxonomic diversity and composition are reflected in functional gene profiles by implementing whole gene sequencing (WGS) metagenomic analysis of geographically dispersed soils from two distinct pristine forests. The study was commenced by sequencing three rainforest soil samples and three peat swamp soil samples. Soil richness effects were assessed by exploring the changes in specific functional gene abundances to elucidate physiological constraints acting on different soil systems and identify variance in functional pathways relevant to soil biogeochemical cycling. Proteobacteria shows abundances of microbial diversity for 52.15% in Royal Belum Reserved Forest and 48.28% in Raja Musa; 177 out of 1,391,841 and 449 out of 3,586,577 protein coding represent acidic stress-response genes for Royal Belum and Raja Musa, respectively. Raja Musa indicates pH 2.5, which is extremely acidic. The analysis of the taxonomic community showed that Royal Belum soils are dominated by bacteria (98% in Sungai Kooi (SK), 98% in Sungai Papan (SP), and 98% in Sungai Ruok (SR), Archaea (0.9% in SK, 0.9% in SP, and 1% in SR), and the remaining were classed under Eukaryota and viruses. Likewise, the soils of Raja Muda Musa are also dominated by bacteria (95% in Raja Musa 1 (RM1), 98% in Raja Musa 2 (RM2), and 96% in Raja Musa 3 (RM3)), followed by Archaea (4% in RM1, 1% in RM2, and 3% in RM3), and the remaining were classed under Eukaryota and viruses. This study revealed that RBFR (Royal Belum Foresr Reserve) and RMFR (Raja Musa Forest Reserve) metagenomes contained abundant stress-related genes assigned to various stress-response pathways, many of which did not show any difference among samples from both sites. Our findings indicate that the structure and functional potential of the microbial community will be altered by future environmental potential as the first glimpse of both the taxonomic and functional composition of soil microbial communities