Pub Date : 2023-07-12DOI: 10.32802/asmscj.2023.1513
A. Abuzaid, Shokrya S. Alshqaq, Maysaa Elbozom
Panel data analysis has gained much interest in different fields. This article considers modellingmetrological data in Palestine using panel data models to predict the total rainfall based ontemperature, pressure, relative humidity, and wind speed at five different governorates in the WestBank, Palestine. Different unit root tests have confirmed the stationarity of data. Based onHausman's test, the fixed effect model was chosen as the best model out of all other panel datamodels. The fitted model shows that temperature and pressure have significant negative effects,while relative humidity and wind speed have positive effects on rainfall. Furthermore, with respectto the governorate of Nablus, Ramallah and Hebron have a positive effect on the total monthlyrainfall, while Jenin and Jericho have a negative effect.
{"title":"Statistical Modelling of Palestinian Meteorological Data Using Panel Data Techniques","authors":"A. Abuzaid, Shokrya S. Alshqaq, Maysaa Elbozom","doi":"10.32802/asmscj.2023.1513","DOIUrl":"https://doi.org/10.32802/asmscj.2023.1513","url":null,"abstract":"Panel data analysis has gained much interest in different fields. This article considers modellingmetrological data in Palestine using panel data models to predict the total rainfall based ontemperature, pressure, relative humidity, and wind speed at five different governorates in the WestBank, Palestine. Different unit root tests have confirmed the stationarity of data. Based onHausman's test, the fixed effect model was chosen as the best model out of all other panel datamodels. The fitted model shows that temperature and pressure have significant negative effects,while relative humidity and wind speed have positive effects on rainfall. Furthermore, with respectto the governorate of Nablus, Ramallah and Hebron have a positive effect on the total monthlyrainfall, while Jenin and Jericho have a negative effect.","PeriodicalId":38804,"journal":{"name":"ASM Science Journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48837724","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 : 2023-04-13DOI: 10.32802/asmscj.2023.1341
Khairul Hafezad Abdullah
Chemical management is critical and has an enormous impact on our daily lives. Numerous advancements in chemical production have transformed management facets, most notably vis-à-vis safety, health, and environment. Thus, the scientometric review could depict and analyse publication trends in updating scientific datasets and knowledge in this field. This scientometric review is intended to scrutinise the progress, trends, and updates of publications concerning chemical management in the Scopus and Web of Science databases. The publication patterns and authors’ keywords are among the scientometric parameters examined in this review. The obtained publication lists or metadata in this study were analysed using ScientoPy and VOSviewer software, which displayed the scientometric results graphically. The current study portrayed that the number of publications on chemical management has increased in both databases. The exploratory publications and research areas reveal that efforts to inspect chemical management cover miscellaneous topics and disciplines such as environmental science and ecology, engineering, and agriculture. The most related authors’ keywords concerning chemical management are “Risk management”, “Risk assessment”, and “REACH”. Researchers and practitioners may benefit from this scientometric review since it contains data, concepts, thoughts, and insights that can be employed to bolster their theories and practices in managing chemicals.
化学品管理是至关重要的，对我们的日常生活有着巨大的影响。化工生产的许多进步改变了管理方面，最显著的是-à-vis安全、健康和环境方面。因此，科学计量学综述可以描述和分析该领域科学数据集和知识更新的出版趋势。本科学计量学综述旨在审查Scopus和Web of Science数据库中有关化学管理的出版物的进展、趋势和更新。发表模式和作者关键词是本综述研究的科学计量参数之一。使用ScientoPy和VOSviewer软件分析本研究中获得的出版物列表或元数据，并以图形方式显示科学计量结果。目前的研究表明，两个数据库中关于化学品管理的出版物数量都有所增加。探索性出版物和研究领域表明，检查化学品管理的工作涵盖了环境科学与生态学、工程和农业等各种主题和学科。与化学品管理相关的作者关键词最多的是“风险管理”、“风险评估”和“REACH”。研究人员和实践者可能会从科学计量学的回顾中受益，因为它包含了数据、概念、思想和见解，可以用来支持他们在管理化学品方面的理论和实践。
{"title":"A Scientometric Review of Chemical Management","authors":"Khairul Hafezad Abdullah","doi":"10.32802/asmscj.2023.1341","DOIUrl":"https://doi.org/10.32802/asmscj.2023.1341","url":null,"abstract":"Chemical management is critical and has an enormous impact on our daily lives. Numerous advancements in chemical production have transformed management facets, most notably vis-à-vis safety, health, and environment. Thus, the scientometric review could depict and analyse publication trends in updating scientific datasets and knowledge in this field. This scientometric review is intended to scrutinise the progress, trends, and updates of publications concerning chemical management in the Scopus and Web of Science databases. The publication patterns and authors’ keywords are among the scientometric parameters examined in this review. The obtained publication lists or metadata in this study were analysed using ScientoPy and VOSviewer software, which displayed the scientometric results graphically. The current study portrayed that the number of publications on chemical management has increased in both databases. The exploratory publications and research areas reveal that efforts to inspect chemical management cover miscellaneous topics and disciplines such as environmental science and ecology, engineering, and agriculture. The most related authors’ keywords concerning chemical management are “Risk management”, “Risk assessment”, and “REACH”. Researchers and practitioners may benefit from this scientometric review since it contains data, concepts, thoughts, and insights that can be employed to bolster their theories and practices in managing chemicals.","PeriodicalId":38804,"journal":{"name":"ASM Science Journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-04-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47750345","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 : 2023-04-13DOI: 10.32802/asmscj.2023.1236
Nuraihan Abu Zarim, Syahariza Zainul Abidin, Fazilah Ariffin, Norsila Abdul Wahab
A sensory study was conducted to evaluate the acceptability of texture modified chicken rendang (TMCR) added with different thickeners (modified corn starch (MC), sago starch (S), tapioca starch (T), xanthan gum (XG) and carboxymethyl cellulose gum (CMC) among healthy elderly consumer. The sensory evaluation was rated using the hedonic test with visual 7-points Cued Facial Scale (CuFS) for ease of swallowing, overall appearance, and overall texture’s attributes. Meanwhile, a categorical scale (‘Yes’ or ‘No’ answer) was used to evaluate purchase intention, liking on the flavour, residues left after swallowing, and sample’s aftertaste. Results showed that all samples were highly accepted for all attributes tested. The insignificant difference between all samples using Cued Facial Scale could be due to similar physical appearance as well as reduced sensory capability among the elderly panellists. Besides, all thickened samples were found to be free from any food residues after swallowing, due to higher cohesion between food particles contributed by the thickeners. In addition, the use of thickeners shown to prevent easy disintegration of food particles during oral consumption which involved tongue and palate shear in the presence of saliva. Even though 79% of the panellists in perceived a starchy taste for all thickened samples, this attribute did not affect the purchase intention and flavour acceptance of the developed products, as both received more than 79% and 85 % likings, respectively. The finding shows that the elderly panellists had a good impression on the developed TMCR, which indicates its promising prospect for product commercialisation.
{"title":"A Sensory Study on the Effect of Different Thickeners in Texture-Modified Chicken Rendang","authors":"Nuraihan Abu Zarim, Syahariza Zainul Abidin, Fazilah Ariffin, Norsila Abdul Wahab","doi":"10.32802/asmscj.2023.1236","DOIUrl":"https://doi.org/10.32802/asmscj.2023.1236","url":null,"abstract":"A sensory study was conducted to evaluate the acceptability of texture modified chicken rendang (TMCR) added with different thickeners (modified corn starch (MC), sago starch (S), tapioca starch (T), xanthan gum (XG) and carboxymethyl cellulose gum (CMC) among healthy elderly consumer. The sensory evaluation was rated using the hedonic test with visual 7-points Cued Facial Scale (CuFS) for ease of swallowing, overall appearance, and overall texture’s attributes. Meanwhile, a categorical scale (‘Yes’ or ‘No’ answer) was used to evaluate purchase intention, liking on the flavour, residues left after swallowing, and sample’s aftertaste. Results showed that all samples were highly accepted for all attributes tested. The insignificant difference between all samples using Cued Facial Scale could be due to similar physical appearance as well as reduced sensory capability among the elderly panellists. Besides, all thickened samples were found to be free from any food residues after swallowing, due to higher cohesion between food particles contributed by the thickeners. In addition, the use of thickeners shown to prevent easy disintegration of food particles during oral consumption which involved tongue and palate shear in the presence of saliva. Even though 79% of the panellists in perceived a starchy taste for all thickened samples, this attribute did not affect the purchase intention and flavour acceptance of the developed products, as both received more than 79% and 85 % likings, respectively. The finding shows that the elderly panellists had a good impression on the developed TMCR, which indicates its promising prospect for product commercialisation.","PeriodicalId":38804,"journal":{"name":"ASM Science Journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-04-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41525602","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 : 2023-04-12DOI: 10.32802/asmscj.2023.1459
Adill Balla Adill Elkrail, Fathelrahman Ali Bireir, Khalid Elsir Ahmed Nayl
The main objective of groundwater modelling in Gash River Sub-basin, is to investigate the effect of hydrologic, hydrogeological parameters and stresses on hydrodynamic behaviour through the implementation of a realistic three-dimensional groundwater flow model. Severe decline of water level due to uncontrollable heavy abstraction, exposes a water scarcity problem especially in summer seasons. The model was developed for four geological layers encompassing two aquifer zones. The improved three-dimensional visual MODFLOW Code was selected, implemented and run using WHS method to solve the finite difference equation using trail-and-error calibration procedure at Kassala Area. The transient model was successfully calibrated with acceptable results of model calibration criteria. The contour maps of the simulated heads were performed as potentiometric surface. The general flow direction of the groundwater is from southeast towards northwest part of the area and from Gash River course towards the east and west directions as detected from gradual decreasing of potential line’s values in those directions, confirming the aquifer recharge from Gash River. The similarity of potentiometric surface contour maps of the two aquifers confirm the aquifers hydraulic interactions. It is found that the increasing pumping rate caused considerable increase in drawdown as detected from pumping rate incremental scenarios. Moreover, incremental pumping rate scenarios also reflected increasing river leakage into the aquifer system due to disturbance of water balance due to water level decline. The components of water budgets were calculated and its percentage was performed for the hydrologic balance. The difference between inflow and outflow of the water balance shows a deficit in most stress periods of the model simulations. Calibration fitness was accomplished at most of the observation wells suggesting that the groundwater model is an accurate representation of the actual historic groundwater system and confirm the validity of the model to forecasting purposes. It was found that the model is more sensitive to hydraulic conductivity and least sensitive to specific yield (Sy). Hence, precaution should be revealed for hydraulic conductivity in forecasting model usage.
{"title":"Groundwater Assessment using Numerical Flow Model: A Case Study in Gash Sub-Basin-Kassala State, Sudan","authors":"Adill Balla Adill Elkrail, Fathelrahman Ali Bireir, Khalid Elsir Ahmed Nayl","doi":"10.32802/asmscj.2023.1459","DOIUrl":"https://doi.org/10.32802/asmscj.2023.1459","url":null,"abstract":"The main objective of groundwater modelling in Gash River Sub-basin, is to investigate the effect of hydrologic, hydrogeological parameters and stresses on hydrodynamic behaviour through the implementation of a realistic three-dimensional groundwater flow model. Severe decline of water level due to uncontrollable heavy abstraction, exposes a water scarcity problem especially in summer seasons. The model was developed for four geological layers encompassing two aquifer zones. The improved three-dimensional visual MODFLOW Code was selected, implemented and run using WHS method to solve the finite difference equation using trail-and-error calibration procedure at Kassala Area. The transient model was successfully calibrated with acceptable results of model calibration criteria. The contour maps of the simulated heads were performed as potentiometric surface. The general flow direction of the groundwater is from southeast towards northwest part of the area and from Gash River course towards the east and west directions as detected from gradual decreasing of potential line’s values in those directions, confirming the aquifer recharge from Gash River. The similarity of potentiometric surface contour maps of the two aquifers confirm the aquifers hydraulic interactions. It is found that the increasing pumping rate caused considerable increase in drawdown as detected from pumping rate incremental scenarios. Moreover, incremental pumping rate scenarios also reflected increasing river leakage into the aquifer system due to disturbance of water balance due to water level decline. The components of water budgets were calculated and its percentage was performed for the hydrologic balance. The difference between inflow and outflow of the water balance shows a deficit in most stress periods of the model simulations. Calibration fitness was accomplished at most of the observation wells suggesting that the groundwater model is an accurate representation of the actual historic groundwater system and confirm the validity of the model to forecasting purposes. It was found that the model is more sensitive to hydraulic conductivity and least sensitive to specific yield (Sy). Hence, precaution should be revealed for hydraulic conductivity in forecasting model usage.","PeriodicalId":38804,"journal":{"name":"ASM Science Journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45345708","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 : 2023-03-30DOI: 10.32802/asmscj.2023.1307
Ashwini Gengatharan, Ravina Suloshini Gengatharan
Honey is a sweet and sticky biological liquid that is produced by bees following the collection from plant nectars. Honey is enjoyed as a popular food product across the globe for its sweetness, flavor and texture. The benefits offered by honey as food and medicine to mankind is immense with its virtues being documented in ancient religious, medical and secular texts. The source and composition of honey greatly influences its biochemical properties while the therapeutic value of honey has been relatively associated with its antioxidant properties. Tualang honey is a Malaysian multi-floral jungle honey produced by the rock bee (Apis dorsata). Although there are various types of honey being marketed globally such as the Manuka honey, less attention was given to the Tualang honey as a commercially available food product. Also, Tualang honey is less extensively studied and characterized unlike the Manuka honey. At present, there is a growing interest in the use of honey as a nutraceutical and therapeutic lead to develop new methods of treatment. Therefore, this paper reviews the functional and therapeutic properties, such as antioxidant, anticancer, antimicrobial, antinociceptive and hepatoprotective activity of the Tualang honey suggesting its use as a potential functional food or functional food ingredient.
{"title":"Tualang Honey: A Sweet Remedy","authors":"Ashwini Gengatharan, Ravina Suloshini Gengatharan","doi":"10.32802/asmscj.2023.1307","DOIUrl":"https://doi.org/10.32802/asmscj.2023.1307","url":null,"abstract":"Honey is a sweet and sticky biological liquid that is produced by bees following the collection from plant nectars. Honey is enjoyed as a popular food product across the globe for its sweetness, flavor and texture. The benefits offered by honey as food and medicine to mankind is immense with its virtues being documented in ancient religious, medical and secular texts. The source and composition of honey greatly influences its biochemical properties while the therapeutic value of honey has been relatively associated with its antioxidant properties. Tualang honey is a Malaysian multi-floral jungle honey produced by the rock bee (Apis dorsata). Although there are various types of honey being marketed globally such as the Manuka honey, less attention was given to the Tualang honey as a commercially available food product. Also, Tualang honey is less extensively studied and characterized unlike the Manuka honey. At present, there is a growing interest in the use of honey as a nutraceutical and therapeutic lead to develop new methods of treatment. Therefore, this paper reviews the functional and therapeutic properties, such as antioxidant, anticancer, antimicrobial, antinociceptive and hepatoprotective activity of the Tualang honey suggesting its use as a potential functional food or functional food ingredient.","PeriodicalId":38804,"journal":{"name":"ASM Science Journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47752371","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 : 2023-03-28DOI: 10.32802/asmscj.2023.1078
M. A. Mahamud
The agricultural activities and urban developments in Cameron Highlands have made them vulnerable to erosion. This situation has been supported by the fact that many ongoing and new proposed development projects have taken place in the Cameron Highlands. Thus, this study evaluates soil loss risk levels by catchment and sub-districts (mukim) in Cameron Highlands using the USLE model with GIS application. The USLE model covers the six factors namely rainfall erosivity, soil erodibility, slope length and steepness, cover management, and conservation practice. In earlier studies, PLANMalaysia and the Department of Agriculture Malaysia recorded land use and land cover have produced different soil loss risk levels in Cameron Highlands. Land-use data from PLANMalaysia represents town construction and development, while land-use data from the Department of Agriculture represents agricultural impact. Based on the result, the soil loss risk level produced by REDAC USM has predicted that 6.72 per cent in Cameron Highlands possess 'HIGH' risk or higher. On the other hand, soil loss risk levels produced using data from PLANMalaysia and the Department of Agriculture have predicted 10.08 per cent and 5.95 per cent, respectively. This new soil loss risk level could guide farmers and local authorities to control current land-use practices, encouraging soil conservation, and minimising soil loss in Cameron Highlands.
{"title":"Erosion Risk Level at Cameron Highlands with Regards to Soil Erosion Loss","authors":"M. A. Mahamud","doi":"10.32802/asmscj.2023.1078","DOIUrl":"https://doi.org/10.32802/asmscj.2023.1078","url":null,"abstract":"The agricultural activities and urban developments in Cameron Highlands have made them vulnerable to erosion. This situation has been supported by the fact that many ongoing and new proposed development projects have taken place in the Cameron Highlands. Thus, this study evaluates soil loss risk levels by catchment and sub-districts (mukim) in Cameron Highlands using the USLE model with GIS application. The USLE model covers the six factors namely rainfall erosivity, soil erodibility, slope length and steepness, cover management, and conservation practice. In earlier studies, PLANMalaysia and the Department of Agriculture Malaysia recorded land use and land cover have produced different soil loss risk levels in Cameron Highlands. Land-use data from PLANMalaysia represents town construction and development, while land-use data from the Department of Agriculture represents agricultural impact. Based on the result, the soil loss risk level produced by REDAC USM has predicted that 6.72 per cent in Cameron Highlands possess 'HIGH' risk or higher. On the other hand, soil loss risk levels produced using data from PLANMalaysia and the Department of Agriculture have predicted 10.08 per cent and 5.95 per cent, respectively. This new soil loss risk level could guide farmers and local authorities to control current land-use practices, encouraging soil conservation, and minimising soil loss in Cameron Highlands.","PeriodicalId":38804,"journal":{"name":"ASM Science Journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41816717","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 : 2023-03-27DOI: 10.32802/asmscj.2023.1430
Vijaya - Balakrisnan
The implementation of STEM (Science, Technology, Engineering and Mathematics) in primary schools is a new avenue for researchers and educators. Several studies have reported the needs, barriers and threats and tested instructional methods in general. In Malaysian primary schools, it is still a work in progress and a great challenge to deal with existing issues in teaching and learning primary science. Hence, education futurists have redirected science learning by commercialising the student-centred learning model of makerspace with STEM elements, which combines high-tech tools and materials. Besides, in the Scopus database, the number of researches on the STEM education infused maker concept shows notable figures. Therefore, this study presents a systematic literature review on implementations of the STEM-Maker concept in primary schools for in-depth understanding and application. A checklist of the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) is referred to and applied. Eight STEM-Maker concept implementations and six STEM-Maker concept practices were identified from 13 shortlisted articles. The citation, purpose and primary results of each shortlisted study are also discussed in this paper. To establish a solid foundation in science with transversal competencies in primary education, the bridging concept of the Maker with STEM education would be a tremendous opportunity to instil future skills under one roof.
{"title":"Maker-centred Learning Approach to Craft STEM Education in Primary Schools: A Systematic Literature Review","authors":"Vijaya - Balakrisnan","doi":"10.32802/asmscj.2023.1430","DOIUrl":"https://doi.org/10.32802/asmscj.2023.1430","url":null,"abstract":"The implementation of STEM (Science, Technology, Engineering and Mathematics) in primary schools is a new avenue for researchers and educators. Several studies have reported the needs, barriers and threats and tested instructional methods in general. In Malaysian primary schools, it is still a work in progress and a great challenge to deal with existing issues in teaching and learning primary science. Hence, education futurists have redirected science learning by commercialising the student-centred learning model of makerspace with STEM elements, which combines high-tech tools and materials. Besides, in the Scopus database, the number of researches on the STEM education infused maker concept shows notable figures. Therefore, this study presents a systematic literature review on implementations of the STEM-Maker concept in primary schools for in-depth understanding and application. A checklist of the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) is referred to and applied. Eight STEM-Maker concept implementations and six STEM-Maker concept practices were identified from 13 shortlisted articles. The citation, purpose and primary results of each shortlisted study are also discussed in this paper. To establish a solid foundation in science with transversal competencies in primary education, the bridging concept of the Maker with STEM education would be a tremendous opportunity to instil future skills under one roof.","PeriodicalId":38804,"journal":{"name":"ASM Science Journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42670427","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 : 2023-03-14DOI: 10.32802/asmscj.2023.1198
L. Rajamani, Nurul Filzati Ali, Luz Helena Rodriguez -Vargas, Azimah Abdul Rahman
The Indo-Pacific finless porpoise (Neophocaena phocaenoides) occurs in a narrow strip of shallow marine waters less than 50m deep. The finless porpoise although recorded in Malaysia has not been comprehensively studied. The documentation of the occurrence and distribution of finless porpoise in west and north-west Penang was carried out from 2011 to 2019.This included interview surveys every 3 months from December 2012 to December 2013, a collation of published literature and conducting preliminary boat surveys in 2019. A total of 240 structured, individual interviews were done with the local community. Based on the interview surveys, there were 6 sightings (n=6/240, 2.5%) of finless porpoises in 2013. Published data indicated that there were 19 sightings of finless porpoises in 2013 and 3 sightings in 2014. Twenty mortalities of finless porpoises have been recorded. Boat surveys recorded 14 sightings of finless porpoise with an encounter rate of 0.106 sightings per hour. Mean group size was 2.6 ± 0.4 SE. The finless porpoise appears to occur in Teluk Bahang, Pantai Kerachut, Sungai Pinang and Sungai Burung in west Penang. Overall, the data suggests that there is a consistent population where line transect surveys can be done to further elucidate the population status of finless porpoises in Penang.
{"title":"Occurrences of Indo-Pacific Finless porpoise (Neophocaena phocaenoides) off the West Coast of Penang Island, Malaysia","authors":"L. Rajamani, Nurul Filzati Ali, Luz Helena Rodriguez -Vargas, Azimah Abdul Rahman","doi":"10.32802/asmscj.2023.1198","DOIUrl":"https://doi.org/10.32802/asmscj.2023.1198","url":null,"abstract":"The Indo-Pacific finless porpoise (Neophocaena phocaenoides) occurs in a narrow strip of shallow marine waters less than 50m deep. The finless porpoise although recorded in Malaysia has not been comprehensively studied. The documentation of the occurrence and distribution of finless porpoise in west and north-west Penang was carried out from 2011 to 2019.This included interview surveys every 3 months from December 2012 to December 2013, a collation of published literature and conducting preliminary boat surveys in 2019. A total of 240 structured, individual interviews were done with the local community. Based on the interview surveys, there were 6 sightings (n=6/240, 2.5%) of finless porpoises in 2013. Published data indicated that there were 19 sightings of finless porpoises in 2013 and 3 sightings in 2014. Twenty mortalities of finless porpoises have been recorded. Boat surveys recorded 14 sightings of finless porpoise with an encounter rate of 0.106 sightings per hour. Mean group size was 2.6 ± 0.4 SE. The finless porpoise appears to occur in Teluk Bahang, Pantai Kerachut, Sungai Pinang and Sungai Burung in west Penang. Overall, the data suggests that there is a consistent population where line transect surveys can be done to further elucidate the population status of finless porpoises in Penang.","PeriodicalId":38804,"journal":{"name":"ASM Science Journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46083868","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 : 2023-03-13DOI: 10.32802/asmscj.2023.1290
R. Bahloul
Fe-doped Cadmium titanium oxide (CdTiO3) powders were prepared by the sol-gel method. The samples were characterised by Fourier-transform infrared (FTIR) spectroscopy, Electron paramagnetic resonance (EPR) technique, x-ray diffraction (XRD) and diffuse reflection spectroscopy (DRS). The X-ray diffraction results show well that all the samples displayed the ilmenite structure with the presence of minor traces of Titanium Dioxide (TiO2) and (Cadmium oxide) CdO phases, which ratio was shown to change with various concentrations in Fe. The estimated average particle size of the samples was around 56 nm. The photoluminescence properties of Fe-doped CdTiO3 were investigated. FTIR spectroscopy showed the presence of the Ti-O and CdO vibration bands. The spectra from the diffuse reflectance spectroscopy (DRS) DRS showed a red shift and a strong reduction of the gap energy compared to that of the pure sample (CdTiO3). The crystal structure of the CdTiO3 nano-powder presented a certain level of distortion due to the high concentration of oxygen vacancies. In fact, under (400) nm excitation, a clear green emission consecutive to oxygen vacancies was observed. The luminescence spectra of the Fe- doped CdTiO3 samples revealed that, due to oxygen vacancies, the emission and absorption intensities were both enhanced when the size was decreased. It can be inferred from our studies that the concentration of oxygen vacancies could be increased by reducing the crystallite size. The optical and ESR studies showed that the form of bivalent and trivalent states of iron were observed in distorted octahedral symmetry.
{"title":"The Strong Effect of Fe on the Structural and Optical Properties of CdTiO3","authors":"R. Bahloul","doi":"10.32802/asmscj.2023.1290","DOIUrl":"https://doi.org/10.32802/asmscj.2023.1290","url":null,"abstract":"Fe-doped Cadmium titanium oxide (CdTiO3) powders were prepared by the sol-gel method. The samples were characterised by Fourier-transform infrared (FTIR) spectroscopy, Electron paramagnetic resonance (EPR) technique, x-ray diffraction (XRD) and diffuse reflection spectroscopy (DRS). The X-ray diffraction results show well that all the samples displayed the ilmenite structure with the presence of minor traces of Titanium Dioxide (TiO2) and (Cadmium oxide) CdO phases, which ratio was shown to change with various concentrations in Fe. The estimated average particle size of the samples was around 56 nm. The photoluminescence properties of Fe-doped CdTiO3 were investigated. FTIR spectroscopy showed the presence of the Ti-O and CdO vibration bands. The spectra from the diffuse reflectance spectroscopy (DRS) DRS showed a red shift and a strong reduction of the gap energy compared to that of the pure sample (CdTiO3). The crystal structure of the CdTiO3 nano-powder presented a certain level of distortion due to the high concentration of oxygen vacancies. In fact, under (400) nm excitation, a clear green emission consecutive to oxygen vacancies was observed. The luminescence spectra of the Fe- doped CdTiO3 samples revealed that, due to oxygen vacancies, the emission and absorption intensities were both enhanced when the size was decreased. It can be inferred from our studies that the concentration of oxygen vacancies could be increased by reducing the crystallite size. The optical and ESR studies showed that the form of bivalent and trivalent states of iron were observed in distorted octahedral symmetry.","PeriodicalId":38804,"journal":{"name":"ASM Science Journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42998378","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 : 2023-03-08DOI: 10.32802/asmscj.2023.1437
Dr Neelambike S, Dr. Varun B K
Cement concrete lends itself to a multitude of unique designs because of its many beneficial characteristics. Because of its inexpensive cost and desirable physical qualities, concrete is one of the most extensively utilised civil engineering materials. In this article, LD (Linz and Donawitz) slag is used to partially replace fine aggregate. This research mainly concentrates on partial replacement of natural fine aggregate with LD slag fine aggregate. Since the construction industry activity in India is gaining its momentum there is a scarcity of natural resources to overcome this problem substitute materials should be used to make the concrete and studies have to be conducted. In this study such an attempt is made where natural fine aggregate is partially replaced with LD slag fine aggregate. The purpose of this work is to investigate the fresh and hardened qualities of M-30 grade concrete in which LD slag has been partially replaced by the weight of natural fine aggregate in the ratios of 0%, 10%, 20%, 30%, 40%, and 50%. The slump test is used to investigate the features of workability. Compressive and split tensile strength tests are used to investigate the hardened characteristics of concrete. After 28 days of curing, the test is performed, and a mathematical regression model is constructed for the same.
{"title":"Effect of Addition of LD Slag Aggregate on Fresh and Hardened Properties of Cement Concrete","authors":"Dr Neelambike S, Dr. Varun B K","doi":"10.32802/asmscj.2023.1437","DOIUrl":"https://doi.org/10.32802/asmscj.2023.1437","url":null,"abstract":"Cement concrete lends itself to a multitude of unique designs because of its many beneficial characteristics. Because of its inexpensive cost and desirable physical qualities, concrete is one of the most extensively utilised civil engineering materials. In this article, LD (Linz and Donawitz) slag is used to partially replace fine aggregate. This research mainly concentrates on partial replacement of natural fine aggregate with LD slag fine aggregate. Since the construction industry activity in India is gaining its momentum there is a scarcity of natural resources to overcome this problem substitute materials should be used to make the concrete and studies have to be conducted. In this study such an attempt is made where natural fine aggregate is partially replaced with LD slag fine aggregate. The purpose of this work is to investigate the fresh and hardened qualities of M-30 grade concrete in which LD slag has been partially replaced by the weight of natural fine aggregate in the ratios of 0%, 10%, 20%, 30%, 40%, and 50%. The slump test is used to investigate the features of workability. Compressive and split tensile strength tests are used to investigate the hardened characteristics of concrete. After 28 days of curing, the test is performed, and a mathematical regression model is constructed for the same.","PeriodicalId":38804,"journal":{"name":"ASM Science Journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41691633","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}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：