ASM Science Journal最新文献_第3页

Pre-Schmidt Mode Parameters in Quantum Entanglement 量子纠缠中的前施密特模式参数

ASM Science Journal Pub Date : 2024-01-04 DOI: 10.32802/asmscj.2023.1355

Tamil Selvam Murugaya, Nurisya Mohd Shah, Sharifah Kartini Said Husain

引用次数: 0

Accuracy Assessment of High-Degree Geopotential Models in Peninsular Malaysia 马来西亚半岛高度位势模型的精度评估

ASM Science Journal Pub Date : 2023-12-19 DOI: 10.32802/asmscj.2023.1018

Saiful Aman HJ Sulaiman, Nur Sofia Erina Ariff, Nurzaitie Aflah Abdullah, Adolfientje Kasenda Olesen, Muhammad Daud Mahdzur

{"title":"Accuracy Assessment of High-Degree Geopotential Models in Peninsular Malaysia","authors":"Saiful Aman HJ Sulaiman, Nur Sofia Erina Ariff, Nurzaitie Aflah Abdullah, Adolfientje Kasenda Olesen, Muhammad Daud Mahdzur","doi":"10.32802/asmscj.2023.1018","DOIUrl":"https://doi.org/10.32802/asmscj.2023.1018","url":null,"abstract":"The selection of the accurate geoid model is essential for geoid determination in specific regions. Many improvements to the basic theory of more reliable data are available for numerical modelling studies. All of the innovations have led to the development of a sequence of global geopotential models of increasing spherical harmonic degree and order and the resolution of the geopotential models. There are hundreds of geopotential models that can be downloaded in ICGEM. All geopotential ICGEM models have accuracy and resolution based on the degree and order of spherical harmonic coefficients. This study has two high-degree geopotential models: the latest one, XGM2019e_2159, and another geopotential model, EGM2008. The accuracy evaluation of two geopotential models needs to be evaluated based on terrestrial gravity data and existing GPS points data to choose which geopotential model is the best-fit geopotential models with different degrees and order in terms of spherical harmonic coefficients using the Root Mean Square method. The statistical analysis of the geopotential model derived based on the existing GPS points shows that the degree and order 720 for XGM2019e_2019 are the best-fit geopotential models in Peninsular Malaysia. The result also indicates that the gravity anomaly derived from EGM2008 with the maximum degree and order of 2190 regarding the spherical harmonic coefficient is the most accurate geoid model that can be used as a reference over Peninsular Malaysia. Overall, it can be concluded that XGM2019e_2019 and EGM2008 are the best-fit geopotential models for Peninsular Malaysia.","PeriodicalId":38804,"journal":{"name":"ASM Science Journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138963207","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}

引用次数: 0

Endophytic Plant Growth-Promoting Rhizobacteria Promote Dendrobium Orchid Growth 内生植物生长促进根瘤菌促进石斛兰生长

ASM Science Journal Pub Date : 2023-12-19 DOI: 10.32802/asmscj.2023.1071

S. Sarawaneeyaruk

引用次数: 0

Computation of Neumann Localised Boundary Domain Integral Equations 计算新曼局部边界域积分方程

ASM Science Journal Pub Date : 2023-12-19 DOI: 10.32802/asmscj.2023.1004

Nurul Akmal Mohamed

{"title":"Computation of Neumann Localised Boundary Domain Integral Equations","authors":"Nurul Akmal Mohamed","doi":"10.32802/asmscj.2023.1004","DOIUrl":"https://doi.org/10.32802/asmscj.2023.1004","url":null,"abstract":"Most integrals in Localised Boundary Domain Integral Equations (LBDIEs) comprise singularities. This paper aims to produce numerical solutions of the LBDIEs for the Partial Differential Equations with variable coefficients. The singularities of the boundary integrals in LBDIEs will be handled by using a semi-analytic for logarithmic singularity and a semi-quadratic analytic method for r−2 singularity. Whereas the singular domain integrals are handled by using the Duffy transformation. The LBDIEs that we consider are associated with the Neumann problem, which can be solved with a condition. If it can be solved, the solution is, however, unique up to an additive constant. We add a perturbation operator to the LBDIEs to convert the LBDIE to a uniquely solvable equation. The perturbed integral operator leads the perturbed LBDIEs to a dense matrix system that disable the use of methods in solving sparse matrix system. We solve the system of linear equations by Lower-Upper (LU) decomposition method. The numerical results indicate that high accuracy results can be attained. It gives the impression that the methods we use in this numerical experiment are reliable in handling the boundary and domain singular integrals.","PeriodicalId":38804,"journal":{"name":"ASM Science Journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138960816","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}

引用次数: 0

Modelling Well Location Between River and Second Contaminant Source in Riverbank Filtration Systems 模拟河岸过滤系统中河流与第二污染源之间的水井位置

ASM Science Journal Pub Date : 2023-12-15 DOI: 10.32802/asmscj.2023.1048

Shaymaa Mustafa, A. Bahar, Zainal Abdul Aziz, Mohamad Darwish, M. K. N. Shamsuddin

{"title":"Modelling Well Location Between River and Second Contaminant Source in Riverbank Filtration Systems","authors":"Shaymaa Mustafa, A. Bahar, Zainal Abdul Aziz, Mohamad Darwish, M. K. N. Shamsuddin","doi":"10.32802/asmscj.2023.1048","DOIUrl":"https://doi.org/10.32802/asmscj.2023.1048","url":null,"abstract":"Extracting water from pumping well near to river in riverbank filtration systems leads to the natural treatment for surface water. To increase the system efficiency, the well should be located at a distance from the river in which the well can produce high percentage of river water that satisfies the requirements of water quality. In case the well is located between river and a contaminant source, its location should be relocated to a suitable place between the two sources. In this article, an analytical solution is produced to specify the suitable distance of pumping well and polluted river in a riverbank filtration systems if there is a contaminant source to the present well. The analytical solution is obtained by using Green’s function. This approach is chosen because of its simplicity for solving multidimensional problems, and its flexibility to deal with arbitrary initial and boundary conditions. The model is compared with numerical one obtained by using MODFLOW software. The results indicate that the location obtained from proposed model is suitable for use to determine the well location. Additionally, the results show that increasing either the pumping rate or initial contaminant concentration leads to an increment to the distance between river well.","PeriodicalId":38804,"journal":{"name":"ASM Science Journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139000077","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}

引用次数: 0

Pharmacological Activities of Dioscorea spp.: A Narrative Review 薯蓣属植物的药理作用叙述性综述

ASM Science Journal Pub Date : 2023-12-13 DOI: 10.32802/asmscj.2023.978

Nuraini Nafisah Jamaludin, Wan Mazlina Md Saad, Nur Faradila Md Jamil, Aliah Mokhtar, Hussin Muhammad

{"title":"Pharmacological Activities of Dioscorea spp.: A Narrative Review","authors":"Nuraini Nafisah Jamaludin, Wan Mazlina Md Saad, Nur Faradila Md Jamil, Aliah Mokhtar, Hussin Muhammad","doi":"10.32802/asmscj.2023.978","DOIUrl":"https://doi.org/10.32802/asmscj.2023.978","url":null,"abstract":"Pharmacological research has become essential for the development of nature-based drugs to support the claimed therapeutic properties of medicinal plants. Dioscorea species are medicinal plants found to have an impressive pharmacological profile. This review aims to compile the pharmacological properties of three Dioscorea species, D. hispida, D. alata and D. bulbifera and their derived compounds through scientific findings, mainly focusing on the biological activities. Relevant clinical and preclinical studies on the pharmacological properties of these plants were identified, screened, and analysed. A systematic search using predetermined keywords on electronic databases (Scopus, Springer and ScienceDirect) was conducted. This review found these Dioscorea species to possess various pharmacological activities such as anti-inflammatory, antimicrobial, anticancer, antioxidant, anti-diabetic, antihypertensive and estrogenic effects. The plant tubers contain active compounds such as diosgenin that is responsible for anti-inflammatory and anti-diabetic activities in D. alata and D. bulbifera, respectively. Other compounds like dioscorine, phenolic, flavonoid and terpenoid elucidated from the yam tubers were found to be antimicrobial and showed prominent free radical scavenging effects. The plants demonstrated various pharmacological activities although data on their mechanisms of action is very limited. Therefore, further research is needed to explore the full potential of these plants as future therapeutic medicines.","PeriodicalId":38804,"journal":{"name":"ASM Science Journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139003628","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}

引用次数: 0

Sensory Characteristics of Flavour Improvement in Squid and Cuttlefish Ink Hydrolysates by Maillard Reaction 马氏反应改善鱿鱼和墨鱼墨汁水解物风味的感官特征

ASM Science Journal Pub Date : 2023-12-07 DOI: 10.32802/asmscj.2023.1644

R. M. Salleh, A. S. Zulkipli, Siti Rashima Romli, B. Akter

{"title":"Sensory Characteristics of Flavour Improvement in Squid and Cuttlefish Ink Hydrolysates by Maillard Reaction","authors":"R. M. Salleh, A. S. Zulkipli, Siti Rashima Romli, B. Akter","doi":"10.32802/asmscj.2023.1644","DOIUrl":"https://doi.org/10.32802/asmscj.2023.1644","url":null,"abstract":"By-products from seafood usually smell fishy. In this research, squid ink powder enzyme hydrolysates (SIPEHs) and cuttlefish ink powder enzyme hydrolysates (CIPEHs) were produced via 4 h of hydrolysis with Alcalase® and papain, respectively, at 3% E/S ratios. To generate Maillard reaction products (MRPs), D-xylose and L-cysteine or D-xylose alone were introduced to the hydrolysates. The mixture was then heated at 120 °C for 2 hours. The resulting MRPs were labelled as SIPEHs-mx, SIPEHs-x, CIPEHs-mx, or CIPEHs-x. Results showed that extending the reaction time increased browning products and aroma compounds and reduced pH from 7.4 to 6.54-5.55, respectively. Furthermore, the Maillard reaction products (MRPs) also exhibited a reduction in volatile aldehydes that are typically linked to fish-like aroma. The qualitative descriptive analysis (QDA) test revealed that MRPs had a better umami flavour and a less fishy flavour than hydrolysates. SIPEHs-mx and CIPEHS-mx were preferred with the overall acceptance that satisfied consumer preferences. Therefore, the Maillard reaction was found to improve the overall flavour of both SIPEHs and CIPEHs. The results indicated that the flavour compounds developed in the MRPs during the subsequent heat treatment have the potential to serve as a suitable alternative to hydrolysates, producing flavours that meet consumer preferences and are considered acceptable. Such an approach holds promise for application in product development and improvement studies, offering practical implications for the food industry.","PeriodicalId":38804,"journal":{"name":"ASM Science Journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-12-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138594272","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}

引用次数: 0

Fabrication and Characterisation of Titanium Dioxide (TiO2) with Different Synthesis Temperatures for Solar Cell Applications 用于太阳能电池应用的不同合成温度二氧化钛 (TiO2) 的制造和特性分析

ASM Science Journal Pub Date : 2023-12-07 DOI: 10.32802/asmscj.2023.1122

S. K. Sahari

{"title":"Fabrication and Characterisation of Titanium Dioxide (TiO2) with Different Synthesis Temperatures for Solar Cell Applications","authors":"S. K. Sahari","doi":"10.32802/asmscj.2023.1122","DOIUrl":"https://doi.org/10.32802/asmscj.2023.1122","url":null,"abstract":"In this investigation, the effects of various synthesis temperatures of titanium dioxide (TiO₂) on the structural, optical, and electrical properties of Dye-Sensitised Solar Cell (DSSC) were investigated. As an organic dye for DSSC, Beetroot plant was chosen. The TiO₂ solution was prepared using the sol-gel method and deposited on glass using the spin coating technique. Several compounds, including absolute ethanol, Titanium Isopropoxide (TTIP), Glacial Acetic Acid (GAA), Triton X-100, and deionised water, were combined to create the TiO₂ solution. Using a Scanning Electron Microscope (SEM), an Ultraviolet-Visible (UV-Vis) spectrometer, and a Keithely 2450 Sourcemeter, the structural, optical, and electrical properties of TiO₂ were determined. The results indicate that the TiO2 thin film synthesised at a temperature of 60°C has the most porous structure and the smallest particle size when compared to others. This temperature also produces TiO₂ with the sharpest peak absorption of 0.40 at a wavelength of 575.50 nm, resulting in a bandgap energy of 3.10 eV. Furthermore, it has a higher Field factor (FF) value that results in the highest energy conversion efficiency, ɳ of 0.34 %.","PeriodicalId":38804,"journal":{"name":"ASM Science Journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-12-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138592749","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}

引用次数: 0

The Symmetries of (𝒌𝒌:𝜶𝜶𝟏𝟏,𝜶𝜶𝟐𝟐,…,𝜶𝜶𝒌𝒌)-step Fibonacci Functions 的对称(𝒌𝒌:𝜶𝜶𝟏𝟏,𝜶𝜶𝟐𝟐,…,𝜶𝜶𝒌𝒌)一步一步Fibonacci函数

ASM Science Journal Pub Date : 2023-11-15 DOI: 10.32802/asmscj.2023.1392

Yanapat Tongron, Kanyaphak Paikhlaew, Supattra Kerdmongkon, Numsook Nawapongpipat

{"title":"The Symmetries of (𝒌𝒌:𝜶𝜶𝟏𝟏,𝜶𝜶𝟐𝟐,…,𝜶𝜶𝒌𝒌)-step Fibonacci Functions","authors":"Yanapat Tongron, Kanyaphak Paikhlaew, Supattra Kerdmongkon, Numsook Nawapongpipat","doi":"10.32802/asmscj.2023.1392","DOIUrl":"https://doi.org/10.32802/asmscj.2023.1392","url":null,"abstract":"It is well known that the Fibonacci sequence (𝐹𝑛) is denoted by 𝐹0=0, 𝐹1=1 and 𝐹𝑛=𝐹𝑛−1+𝐹𝑛−2, while the Lucas sequence (𝐿𝑛) is denoted by 𝐿0=2, 𝐿1=1 and 𝐿𝑛=𝐿𝑛−1+𝐿𝑛−2. There are several studies showing relations between these two sequences. An interesting generalisation of both the sequences is a Fibonacci function 𝑓:ℝ→ℝ defined by 𝑓(𝑥+2)=𝑓(𝑥+1)+𝑓(𝑥) for any real number 𝑥 (Elmore, 1967). Research about periods of Fibonacci numbers modulo 𝑚 (Jameson, 2018) results in a contribution on the existence of primitive period of a Fibonacci function 𝑓:ℤ→ℤ modulo 𝑚 (Thongngam & Chinram, 2019). Recently, a 𝑘-step Fibonacci function 𝑓:ℤ→ℤ denoted by 𝑓(𝑛+𝑘)=𝑓(𝑛+𝑘−1)+𝑓(𝑛+𝑘−2)+⋯+𝑓(𝑛) for any integer 𝑛 and 𝑘≥2 (which is a generalisation of a Fibonacci function 𝑓:ℤ→ℤ) is introduced and the existence of primitive period of this function modulo 𝑚 is established (Tongron & Kerdmongkon, 2022). In this work, let 𝑘 be an integer ≥2. For nonnegative integers 𝛼1,𝛼2,…,𝛼𝑘 and 𝛼1≠0, a (𝑘:𝛼1,𝛼2,…,𝛼𝑘)-step Fibonacci function 𝑓:ℤ→ℤ is defined by 𝑓(𝑛)=𝑓(𝑛−𝛼1)+𝑓(𝑛−𝛼1−𝛼2)+⋯+𝑓(𝑛−𝛼1−𝛼2−⋯−𝛼𝑘) for any integer 𝑛. In fact, a 𝑘-step Fibonacci function is a special case of a (𝑘:𝛼1,𝛼2,…,𝛼𝑘)-step Fibonacci function. We present the existence of primitive period of this function modulo 𝑚 and show that certain (𝑘:𝛼1,𝛼2,…,𝛼𝑘)-step Fibonacci functions are symmetric-like.","PeriodicalId":38804,"journal":{"name":"ASM Science Journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136229216","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}

引用次数: 0

Thermally Radiation of MHD Two-Phase Williamson Fluid with Newtonian Heating (NH) 牛顿加热下MHD两相Williamson流体的热辐射

ASM Science Journal Pub Date : 2023-11-10 DOI: 10.32802/asmscj.2023.1155

Abdul Rahman Mohd Kasim, NUR SYAMILAH ARIFIN, Sharidan Shafie, Noor Amalina Nisa Ariffin

引用次数: 0