Pub Date : 2024-02-15DOI: 10.32802/asmscj.2023.1068
Khairul Nizam Mohamed
A phytoplankton was incubated for a week to determine the effects of pH changes on its biomass growth in nutrient enrichment incubation samples. In this experiment, a general increase in phytoplankton biomass was observed after 24 hours of incubation, with a similar growth pattern in all incubation samples. By comparing with the same pH range (7.0 to 8.0), Pulau Pangkor (PP) incubation samples achieved the peaks earlier compared to Pulau Redang (PR) samples, although they had a higher increment in biomass. Meanwhile, in extreme pH (4.0 and 9.0) incubation samples, the phytoplankton biomass was observed to thrive well. This present study suggests that the phytoplankton community in Pulau Redang and Pulau Pangkor waters is able to survive in a wide range of pH levels, and the change in ocean pH has no vital impacts on the phytoplankton based on the short-term experiment.
{"title":"Effects of pH Changes on Phytoplankton Biomass","authors":"Khairul Nizam Mohamed","doi":"10.32802/asmscj.2023.1068","DOIUrl":"https://doi.org/10.32802/asmscj.2023.1068","url":null,"abstract":"A phytoplankton was incubated for a week to determine the effects of pH changes on its biomass growth in nutrient enrichment incubation samples. In this experiment, a general increase in phytoplankton biomass was observed after 24 hours of incubation, with a similar growth pattern in all incubation samples. By comparing with the same pH range (7.0 to 8.0), Pulau Pangkor (PP) incubation samples achieved the peaks earlier compared to Pulau Redang (PR) samples, although they had a higher increment in biomass. Meanwhile, in extreme pH (4.0 and 9.0) incubation samples, the phytoplankton biomass was observed to thrive well. This present study suggests that the phytoplankton community in Pulau Redang and Pulau Pangkor waters is able to survive in a wide range of pH levels, and the change in ocean pH has no vital impacts on the phytoplankton based on the short-term experiment.","PeriodicalId":503593,"journal":{"name":"ASM Science Journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139776041","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-02-15DOI: 10.32802/asmscj.2023.1068
Khairul Nizam Mohamed
A phytoplankton was incubated for a week to determine the effects of pH changes on its biomass growth in nutrient enrichment incubation samples. In this experiment, a general increase in phytoplankton biomass was observed after 24 hours of incubation, with a similar growth pattern in all incubation samples. By comparing with the same pH range (7.0 to 8.0), Pulau Pangkor (PP) incubation samples achieved the peaks earlier compared to Pulau Redang (PR) samples, although they had a higher increment in biomass. Meanwhile, in extreme pH (4.0 and 9.0) incubation samples, the phytoplankton biomass was observed to thrive well. This present study suggests that the phytoplankton community in Pulau Redang and Pulau Pangkor waters is able to survive in a wide range of pH levels, and the change in ocean pH has no vital impacts on the phytoplankton based on the short-term experiment.
{"title":"Effects of pH Changes on Phytoplankton Biomass","authors":"Khairul Nizam Mohamed","doi":"10.32802/asmscj.2023.1068","DOIUrl":"https://doi.org/10.32802/asmscj.2023.1068","url":null,"abstract":"A phytoplankton was incubated for a week to determine the effects of pH changes on its biomass growth in nutrient enrichment incubation samples. In this experiment, a general increase in phytoplankton biomass was observed after 24 hours of incubation, with a similar growth pattern in all incubation samples. By comparing with the same pH range (7.0 to 8.0), Pulau Pangkor (PP) incubation samples achieved the peaks earlier compared to Pulau Redang (PR) samples, although they had a higher increment in biomass. Meanwhile, in extreme pH (4.0 and 9.0) incubation samples, the phytoplankton biomass was observed to thrive well. This present study suggests that the phytoplankton community in Pulau Redang and Pulau Pangkor waters is able to survive in a wide range of pH levels, and the change in ocean pH has no vital impacts on the phytoplankton based on the short-term experiment.","PeriodicalId":503593,"journal":{"name":"ASM Science Journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139835572","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-12-29DOI: 10.32802/asmscj.2023.1193
Abdullah Al Mamun, Md. Nuruzzaman
Many authors reported high variability in the prediction of reaeration rates by various equations, leading to uncertainty in the estimation of the reaeration rate for a river. Due to this uncertainty, it is essential to identify a suitable equation to predict the dissolved oxygen (DO) concentration of the river in concern. Pusu River in Malaysia receives sewage discharges and suffers from land-clearing activities and stormwater-related pollution. Pusu River is a small river, but highly important in terms of demography and geographic location. As such, it is required to identify a suitable reaeration rate equation for predicting its DO concentration, which indicates the overall health of a river. The purpose of this study is to assess the suitability of reaeration rate equations to predict Dissolved Oxygen (DO) concentrations of the Pusu River. The water quality analysis simulation program (WASP) model was employed to model the DO of the Pusu River. Reaeration rates calculated from the available 31 equations were given input in the model, and errors in prediction were calculated in terms of Root Mean Square (RMS) error and R2 for every equation. It was revealed that Neguluscu and Rojanski (1969) equation using depth and velocity as the variables performed best among all the equations. It produced a minimum RMS error of 0.17 and 0.09 mg/L in calibration and validation data, respectively. R2 values for predicted-observed plots were 0.98 and 0.97 in these two data sets using the equation. Based on overall Performance Indicator Values (PIVs), reaeration rate equations with depth and velocity as the variables performed better than the other equations with more variables for Pusu River. This study provided important information to accurately model the DO of the Pusu River for future simulation of different scenarios.
{"title":"Assessing Reaeration Rate Equations for Modelling Dissolved Oxygen of Pusu River in Malaysia","authors":"Abdullah Al Mamun, Md. Nuruzzaman","doi":"10.32802/asmscj.2023.1193","DOIUrl":"https://doi.org/10.32802/asmscj.2023.1193","url":null,"abstract":"Many authors reported high variability in the prediction of reaeration rates by various equations, leading to uncertainty in the estimation of the reaeration rate for a river. Due to this uncertainty, it is essential to identify a suitable equation to predict the dissolved oxygen (DO) concentration of the river in concern. Pusu River in Malaysia receives sewage discharges and suffers from land-clearing activities and stormwater-related pollution. Pusu River is a small river, but highly important in terms of demography and geographic location. As such, it is required to identify a suitable reaeration rate equation for predicting its DO concentration, which indicates the overall health of a river. The purpose of this study is to assess the suitability of reaeration rate equations to predict Dissolved Oxygen (DO) concentrations of the Pusu River. The water quality analysis simulation program (WASP) model was employed to model the DO of the Pusu River. Reaeration rates calculated from the available 31 equations were given input in the model, and errors in prediction were calculated in terms of Root Mean Square (RMS) error and R2 for every equation. It was revealed that Neguluscu and Rojanski (1969) equation using depth and velocity as the variables performed best among all the equations. It produced a minimum RMS error of 0.17 and 0.09 mg/L in calibration and validation data, respectively. R2 values for predicted-observed plots were 0.98 and 0.97 in these two data sets using the equation. Based on overall Performance Indicator Values (PIVs), reaeration rate equations with depth and velocity as the variables performed better than the other equations with more variables for Pusu River. This study provided important information to accurately model the DO of the Pusu River for future simulation of different scenarios.","PeriodicalId":503593,"journal":{"name":"ASM Science Journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-12-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139143842","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-12-29DOI: 10.32802/asmscj.2023.1440
Khairul Hafezad Abdullah
Prominent anthropogenic sources of pollution within urban areas, such as automobiles, industrial operations, and increased electricity usage, are linked to human activities that risk human health. This study aimed to examine the publication patterns and annual growth rates related to urban pollution in the Scopus and Web of Science (WoS) databases. The comprehensive analysis encompasses productive countries, network connectivity, proactive institutions, and research keywords examined through ScientoPy and VOSviewer. This analysis revealed a fluctuating trend in urban pollution research in both databases from 1990 to 2021. Nonetheless, there was a notable surge in publications on the WoS database after 2008. Within the scope of this study, "Environmental Science and Ecology" has been identified as the most pivotal subject area. This study indicated that scholars from France, Brazil, the United Kingdom, Germany, Canada, the United States, and China collaborated extensively, establishing robust research partnerships. The keyword “Urban pollution” has become the most prevalent, followed by “Pollution” and “Air pollution”. This study is subject to certain limitations, primarily from its reliance on the Scopus and WoS databases, which consequently influenced the data quality. Nevertheless, the study elucidates prevailing trends in urban pollution research, offering guidance to practitioners, prospective researchers, and policymakers in formulating novel concepts and a research agenda conducive to sustainable environmental dimensions.
{"title":"Urban Pollution: A Bibliometric Review","authors":"Khairul Hafezad Abdullah","doi":"10.32802/asmscj.2023.1440","DOIUrl":"https://doi.org/10.32802/asmscj.2023.1440","url":null,"abstract":"Prominent anthropogenic sources of pollution within urban areas, such as automobiles, industrial operations, and increased electricity usage, are linked to human activities that risk human health. This study aimed to examine the publication patterns and annual growth rates related to urban pollution in the Scopus and Web of Science (WoS) databases. The comprehensive analysis encompasses productive countries, network connectivity, proactive institutions, and research keywords examined through ScientoPy and VOSviewer. This analysis revealed a fluctuating trend in urban pollution research in both databases from 1990 to 2021. Nonetheless, there was a notable surge in publications on the WoS database after 2008. Within the scope of this study, \"Environmental Science and Ecology\" has been identified as the most pivotal subject area. This study indicated that scholars from France, Brazil, the United Kingdom, Germany, Canada, the United States, and China collaborated extensively, establishing robust research partnerships. The keyword “Urban pollution” has become the most prevalent, followed by “Pollution” and “Air pollution”. This study is subject to certain limitations, primarily from its reliance on the Scopus and WoS databases, which consequently influenced the data quality. Nevertheless, the study elucidates prevailing trends in urban pollution research, offering guidance to practitioners, prospective researchers, and policymakers in formulating novel concepts and a research agenda conducive to sustainable environmental dimensions.","PeriodicalId":503593,"journal":{"name":"ASM Science Journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-12-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139146167","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-12-29DOI: 10.32802/asmscj.2023.1535
Tb Sofwan
The teaching-learning process can serve as an effective solution for education during a pandemic due to the implementation of distance learning principles. E-learning is facilitated by various platforms, such as Zoom, Youtube, and Spada, to enhance the development of creative thinking abilities. There is a belief that comprehension is a crucial factor that must be present to support it. Based on this, the research aims to examine the impact of comprehension on the ability to think creatively during the learning process, as well as the influence of comprehension on the final exam through the mediation of creative thinking skills. Additionally, the study will explore the relationship between comprehension and creative thinking skills in the learning process. The research methodology employed is quantitative research, which primarily involves the statistical analysis of numerical data and also provides further insights into the questionnaire and interview data. Comprehension has a significantly positive impact on measures of creative thinking capacity; comprehension has a beneficial impact on performance in final examinations. By utilising thinking ability indicators, there is a positive correlation between creative thinking and comprehension with all indicators of creative thinking ability, resulting in an enhanced contribution to favourable learning outcomes.
由于实施了远程学习原则，教学过程可以成为大流行病期间教育的有效解决方案。通过 Zoom、Youtube 和 Spada 等各种平台促进电子学习，以增强创造性思维能力的发展。有一种观点认为，理解力是支持创造性思维的一个关键因素。基于此，本研究旨在探讨理解能力对学习过程中创造性思维能力的影响，以及理解能力通过创造性思维能力的中介作用对期末考试的影响。此外，本研究还将探讨学习过程中理解能力与创造性思维能力之间的关系。本研究采用的研究方法是定量研究，主要是对数字数据进行统计分析，同时对问卷和访谈数据进行进一步深入分析。理解能力对衡量创造性思维能力有明显的积极影响；理解能力对期末考试成绩有有利影响。通过利用思维能力指标，创造性思维和理解能力与所有创造性思维能力指标之间存在正相关，从而增强了对有利学习成果的贡献。
{"title":"Analysis of Correlation Between Understanding to Mathematics Creative Thinking Ability Through E-Learning Assisted Learning","authors":"Tb Sofwan","doi":"10.32802/asmscj.2023.1535","DOIUrl":"https://doi.org/10.32802/asmscj.2023.1535","url":null,"abstract":"The teaching-learning process can serve as an effective solution for education during a pandemic due to the implementation of distance learning principles. E-learning is facilitated by various platforms, such as Zoom, Youtube, and Spada, to enhance the development of creative thinking abilities. There is a belief that comprehension is a crucial factor that must be present to support it. Based on this, the research aims to examine the impact of comprehension on the ability to think creatively during the learning process, as well as the influence of comprehension on the final exam through the mediation of creative thinking skills. Additionally, the study will explore the relationship between comprehension and creative thinking skills in the learning process. The research methodology employed is quantitative research, which primarily involves the statistical analysis of numerical data and also provides further insights into the questionnaire and interview data. Comprehension has a significantly positive impact on measures of creative thinking capacity; comprehension has a beneficial impact on performance in final examinations. By utilising thinking ability indicators, there is a positive correlation between creative thinking and comprehension with all indicators of creative thinking ability, resulting in an enhanced contribution to favourable learning outcomes.","PeriodicalId":503593,"journal":{"name":"ASM Science Journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-12-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139144459","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-12-28DOI: 10.32802/asmscj.2023.1404
Adib Jafar, Nordin Sakke, M. T. Mapa, Ramli Dollah, Abdul Khair Beddu Asis, Mokhtar Jaafar, Frankie Marcus Ata, Azlan Abas
Understanding the characteristics of flood hazards is crucial since it is one of the basic indicators for determining the risk of loss level. The elements of a hazard are often interpreted with varying connotations, especially flood hazards. In fact, the characteristics and scales that measure a flood hazard level also vary from one study to another. Therefore, the aim of this paper is to understand the characteristics of flood hazards and their influence on the risk of loss level by reviewing previous research. Generally, the flood hazard level can be determined according to certain characteristics, such as depth, velocity, duration, amount of discharge, flood flow force, flood intensity and energy head. Based on these characteristics, the flood hazard level can be classified into three or four levels: low, medium, high; or low, medium, high and extreme. From the aspect of depth, for example, floods with a height less than 0.5 meters and more than 1.5 meters are categorised as low and high hazard levels, respectively. In terms of frequency, floods that occur less than 6 times a year are considered as low hazard level, while those that occur more than 11 times a year are classified as extremely hazardous. The higher the flood hazard level in an area, the greater the risk of loss. Therefore, understanding the characteristics of a flood hazard will aid in determining or assessing the risk of loss in any particular area.
{"title":"Unravelling the Complexity of Flood Hazards: A Comprehensive Review of Characteristics and Risk Assessment","authors":"Adib Jafar, Nordin Sakke, M. T. Mapa, Ramli Dollah, Abdul Khair Beddu Asis, Mokhtar Jaafar, Frankie Marcus Ata, Azlan Abas","doi":"10.32802/asmscj.2023.1404","DOIUrl":"https://doi.org/10.32802/asmscj.2023.1404","url":null,"abstract":"Understanding the characteristics of flood hazards is crucial since it is one of the basic indicators for determining the risk of loss level. The elements of a hazard are often interpreted with varying connotations, especially flood hazards. In fact, the characteristics and scales that measure a flood hazard level also vary from one study to another. Therefore, the aim of this paper is to understand the characteristics of flood hazards and their influence on the risk of loss level by reviewing previous research. Generally, the flood hazard level can be determined according to certain characteristics, such as depth, velocity, duration, amount of discharge, flood flow force, flood intensity and energy head. Based on these characteristics, the flood hazard level can be classified into three or four levels: low, medium, high; or low, medium, high and extreme. From the aspect of depth, for example, floods with a height less than 0.5 meters and more than 1.5 meters are categorised as low and high hazard levels, respectively. In terms of frequency, floods that occur less than 6 times a year are considered as low hazard level, while those that occur more than 11 times a year are classified as extremely hazardous. The higher the flood hazard level in an area, the greater the risk of loss. Therefore, understanding the characteristics of a flood hazard will aid in determining or assessing the risk of loss in any particular area.","PeriodicalId":503593,"journal":{"name":"ASM Science Journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139152780","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-12-26DOI: 10.32802/asmscj.2023.1287
Adyda Ibrahim, Nerda Z. Zaibidi
In general, a Stackelberg competition benefits the leader and the consumer due to making the first move in a sequential game. However, in this paper, sequential movement does not offer an advantage over simultaneous movement in a static duopoly under quantity competition with an isoelastic demand function. By introducing dynamics into the duopoly model through numerical simulations of simultaneous and sequential movements towards the Cournot equilibrium, there is evidence of first-mover advantage. However, simultaneous movement is advantageous over sequential movement in terms of better profits for both firms and lower prices for the consumer.
{"title":"Comparison between Simultaneous and Sequential Movements in a Duopoly Game","authors":"Adyda Ibrahim, Nerda Z. Zaibidi","doi":"10.32802/asmscj.2023.1287","DOIUrl":"https://doi.org/10.32802/asmscj.2023.1287","url":null,"abstract":"In general, a Stackelberg competition benefits the leader and the consumer due to making the first move in a sequential game. However, in this paper, sequential movement does not offer an advantage over simultaneous movement in a static duopoly under quantity competition with an isoelastic demand function. By introducing dynamics into the duopoly model through numerical simulations of simultaneous and sequential movements towards the Cournot equilibrium, there is evidence of first-mover advantage. However, simultaneous movement is advantageous over sequential movement in terms of better profits for both firms and lower prices for the consumer.","PeriodicalId":503593,"journal":{"name":"ASM Science Journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139157049","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-12-26DOI: 10.32802/asmscj.2023.1162
Kho Lee Chin
Solar photovoltaic power plays an important role in distributed energy resources. The number of solar-powered electricity generation has increased steadily in recent years all over the world. This happens because it produces clean energy, and solar photovoltaic technology is continuously developing. One of the challenges in solar photovoltaic is that power generation is highly dependent on the dynamic changes of environmental parameters and asset operating conditions. Solar power forecasting can be a possible solution to maximise the electricity generation capability of the solar photovoltaic system. This study implements the deep learning method, long short-term memory (LSTM) models for time series forecasting in solar photovoltaic power generation forecasting. The data set collected by The Ravina Project from 2010 to 2014 is used as the training data in the simulations. The root mean square value is used in this study to measure the forecasting error. The results show that the deep learning algorithm provides reliable forecasting results.
{"title":"A Case Study of Using Long Short-Term Memory (LSTM) Algorithm in Solar Photovoltaic Power Forecasting","authors":"Kho Lee Chin","doi":"10.32802/asmscj.2023.1162","DOIUrl":"https://doi.org/10.32802/asmscj.2023.1162","url":null,"abstract":"Solar photovoltaic power plays an important role in distributed energy resources. The number of solar-powered electricity generation has increased steadily in recent years all over the world. This happens because it produces clean energy, and solar photovoltaic technology is continuously developing. One of the challenges in solar photovoltaic is that power generation is highly dependent on the dynamic changes of environmental parameters and asset operating conditions. Solar power forecasting can be a possible solution to maximise the electricity generation capability of the solar photovoltaic system. This study implements the deep learning method, long short-term memory (LSTM) models for time series forecasting in solar photovoltaic power generation forecasting. The data set collected by The Ravina Project from 2010 to 2014 is used as the training data in the simulations. The root mean square value is used in this study to measure the forecasting error. The results show that the deep learning algorithm provides reliable forecasting results.","PeriodicalId":503593,"journal":{"name":"ASM Science Journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139156265","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-12-20DOI: 10.32802/asmscj.2023.1188
Zaidah Zainal ariffin
This study aims to extract nitrofuran antibiotics residues, furaltadone, furazolidone, nitrofurazone from biotransformation assays by local Aspergillus tamarii KX610719.1. Nitrofuran antibiotics were quantified by using a high-performance liquid chromatography-diode array detector (HPLC-DAD). Liquid-liquid extraction (LLE) and solid phase extraction (SPE) were employed to extract nitrofurans residue for the optimal purification and cleaned up procedures. In this study, a good linearity with the coefficient of determination R² value of 0.9951 – 0.9972 mg/L with the concentration range of 1 to 50 mg/L nitrofuran antibiotics was achieved. The relative standard deviation (RSD) for triplicate nitrofurans assay were less than 10.0 %. The limit of detection (LOD) and limit of quantification (LoQ) of furazolidone, furaltadone and nitrofurazone were found to be in the range of 2.37 – 10.56 mg/L and 7.17 – 31.99 mg/L, respectively. Moreover, the recovery of the nitrofuran antibiotics investigated in biotransformation assays ranged from 70.0 % - 88.0 %. The developed technique was effectively employed to determine nitrofurans residue in biotransformation assays and demonstrated remarkable clean-up capacity.
{"title":"Dual Extraction Methods for Nitrofuran Antibiotics Residues; Furaltadone, Furazolidone, and Nitrofurazone from Biotransformation Assay","authors":"Zaidah Zainal ariffin","doi":"10.32802/asmscj.2023.1188","DOIUrl":"https://doi.org/10.32802/asmscj.2023.1188","url":null,"abstract":"This study aims to extract nitrofuran antibiotics residues, furaltadone, furazolidone, nitrofurazone from biotransformation assays by local Aspergillus tamarii KX610719.1. Nitrofuran antibiotics were quantified by using a high-performance liquid chromatography-diode array detector (HPLC-DAD). Liquid-liquid extraction (LLE) and solid phase extraction (SPE) were employed to extract nitrofurans residue for the optimal purification and cleaned up procedures. In this study, a good linearity with the coefficient of determination R² value of 0.9951 – 0.9972 mg/L with the concentration range of 1 to 50 mg/L nitrofuran antibiotics was achieved. The relative standard deviation (RSD) for triplicate nitrofurans assay were less than 10.0 %. The limit of detection (LOD) and limit of quantification (LoQ) of furazolidone, furaltadone and nitrofurazone were found to be in the range of 2.37 – 10.56 mg/L and 7.17 – 31.99 mg/L, respectively. Moreover, the recovery of the nitrofuran antibiotics investigated in biotransformation assays ranged from 70.0 % - 88.0 %. The developed technique was effectively employed to determine nitrofurans residue in biotransformation assays and demonstrated remarkable clean-up capacity.","PeriodicalId":503593,"journal":{"name":"ASM Science Journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139168962","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-11-29DOI: 10.32802/asmscj.2023.1301
Zhang Jing Bing, Soon Cheng Yap
Dialysis is the treatment for chronic kidney disease (CKD) patients, including acute or end-stage renal disease (ESRD), by performing the filtration of toxic or waste substances from the patient’s body. Haemodialysis (HD) and peritoneal dialysis (PD) are common treatments for dialysis patients with the use of extracorporeal dialysis machines such as haemodialysis machines or automated peritoneal dialysis (APD) for HD and PD, respectively. For HD, is required a dialyser act as a single-use consumable during the treatment of the patient. However, the major concern on the haemodialysis machine might be the issue on false sense during the treatment. The leakage detector of the dialysis machine is important to detect and sense the parameters when that is a leakage event, such as blood leakage at the dialyser or arteriovenous fistula (AVF) dysfunction. Thus, this study provides a review of leakage detection that has been developed with different methodologies of the sensing unit on a haemodialysis machine.
{"title":"Development of Dialysis and Leakage Detection on Different Technology","authors":"Zhang Jing Bing, Soon Cheng Yap","doi":"10.32802/asmscj.2023.1301","DOIUrl":"https://doi.org/10.32802/asmscj.2023.1301","url":null,"abstract":"Dialysis is the treatment for chronic kidney disease (CKD) patients, including acute or end-stage renal disease (ESRD), by performing the filtration of toxic or waste substances from the patient’s body. Haemodialysis (HD) and peritoneal dialysis (PD) are common treatments for dialysis patients with the use of extracorporeal dialysis machines such as haemodialysis machines or automated peritoneal dialysis (APD) for HD and PD, respectively. For HD, is required a dialyser act as a single-use consumable during the treatment of the patient. However, the major concern on the haemodialysis machine might be the issue on false sense during the treatment. The leakage detector of the dialysis machine is important to detect and sense the parameters when that is a leakage event, such as blood leakage at the dialyser or arteriovenous fistula (AVF) dysfunction. Thus, this study provides a review of leakage detection that has been developed with different methodologies of the sensing unit on a haemodialysis machine.","PeriodicalId":503593,"journal":{"name":"ASM Science Journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139211536","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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