KnE Life Sciences最新文献_第3页

Potential of Coral Resilience Post Bleaching in 2016 in the Water of Ujong Seuke East Coast of Weh Island Indonesia 印度尼西亚威岛东海岸 Ujong Seuke 水域 2016 年白化后珊瑚的恢复潜力

KnE Life Sciences Pub Date : 2024-03-27 DOI: 10.18502/kls.v8i1.15497

N. Aldyza, T. Barus, M. Mulya, M. Sarong

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Generalization of Goursat's Theorem for Subrings of Direct Products of n Rings n 环直积子环的古萨特定理的一般化

KnE Life Sciences Pub Date : 2024-03-27 DOI: 10.18502/kls.v8i1.15397

Muhsang Sudadama, Lieko Liedokto, Hery Susanto, I. Sulandra

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Utilization of Solid Waste Pulp Green Liquor Dregs and Slaker Grits for Rooftile Production Application 利用固体废弃物纸浆绿液渣和板机砂砾生产屋顶瓦片

KnE Life Sciences Pub Date : 2024-03-27 DOI: 10.18502/kls.v8i1.15389

E. M. Tamboesai

{"title":"Utilization of Solid Waste Pulp Green Liquor Dregs and Slaker Grits for Rooftile Production Application","authors":"E. M. Tamboesai","doi":"10.18502/kls.v8i1.15389","DOIUrl":"https://doi.org/10.18502/kls.v8i1.15389","url":null,"abstract":"This study aims to utilize solid waste pulp green liquor dregs and slaker grits by analyzing the effect of adding solid waste green liquor dregs and slaker grits on water absorption and tile compressive strength, analyzing the chemical content of solid waste green liquor pulp dregs and slaker grits and concrete tile products and chemical morphology of the samples. The method used in this research is pressing. The results of the water absorption test for concrete roof tiles with the addition of 0%, 5%, 10%, and 15% solid waste green liquor pulp and slaker grits were 8.4%, 6.4%, 7.5%, and 9.4%. Testing the compressive strength of concrete tiles with the addition of 0%, 5%, 10%, and 15% solid waste green liquor pulp and slaker grits was 19.0 MPa, 19.7 MPa, 18.6 MPa, and 18.3 MPa. The chemical content of solid waste pulp before and after the finished concrete tile product is in accordance with the building blocks of the tile which consists of compounds Al2O3, SiO2, Fe2O3, and CaO. From the above test, it can be concluded that the addition of solid waste pulp can produce quality concrete roof tiles with reference to the value of SNI 0096-2007, that the maximum water absorption value of tile is 10% and the compressive strength of roof tiles is at least 6.0 MPa. \u0000Keywords: solid waste, green liquor, slaker grits, rooftile","PeriodicalId":17898,"journal":{"name":"KnE Life Sciences","volume":"83 8","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140376201","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

Effect of Moon Phase on Physical Parameters at the Mouth of the River 月相对河口物理参数的影响

KnE Life Sciences Pub Date : 2024-03-27 DOI: 10.18502/kls.v8i1.15622

W. Setya, Epa Paujiah, Yusri Amalia, Subagja Burhaanuddin

引用次数: 0

Implementation of Neural Network in Early Detection of Financial Crisis in Singapore 神经网络在新加坡金融危机早期检测中的应用

KnE Life Sciences Pub Date : 2024-03-27 DOI: 10.18502/kls.v8i1.15587

Fadia Mulyarti, Sugiyanto, Sri Subanti, E. Zukhronah, W. Sulandari

引用次数: 0

Analysis of Macroalgae Diversity in the West Coastal of Pananjung Beach, Pangandaran 潘安达兰潘安中海滩西海岸大型藻类多样性分析

KnE Life Sciences Pub Date : 2024-03-27 DOI: 10.18502/kls.v8i1.15502

Aip Muhamad Irpan, Surti Kurniasih, Susi Sutjihati, Suci Siti Lathifah, Resmilia Anugrah, Siti Aqila, Muhamad Alfieansyah

{"title":"Analysis of Macroalgae Diversity in the West Coastal of Pananjung Beach, Pangandaran","authors":"Aip Muhamad Irpan, Surti Kurniasih, Susi Sutjihati, Suci Siti Lathifah, Resmilia Anugrah, Siti Aqila, Muhamad Alfieansyah","doi":"10.18502/kls.v8i1.15502","DOIUrl":"https://doi.org/10.18502/kls.v8i1.15502","url":null,"abstract":"The needed information about the diversity data in the area that can be used in ecological areas in the future is requested to be investigated. This study aims to analyze the diversity of macroalgae on the west coast of Pananjung beach, Pangandaran nature reserve. The study was conducted from March to April 2020. This research used a survey method using three stations representing the research region. Sampling was taken out in the intertidal zone of the Coastal Coast of West Pananjung, Pangandaran nature reserve, West Java using the purposive sampling method. Data taken consisted of macroalgae types found at each observation station and measurements of environmental data consisting of pH, temperature, salinity, and flow velocity. The results showed that there were 21 species of macroalgae grouped into 9 orders, 13 families, and 3 divisions. The research can conclude that macroalgae in Pananjung Barat Beach Pangandaran have an index value that indicates a moderate category, an evenness index classified as a low category, and a dominance index classified as a low category that shows the dominant species was there and it was Padina australis. \u0000Keywords: macroalgae diversity, west coastal, Pananjung beach.","PeriodicalId":17898,"journal":{"name":"KnE Life Sciences","volume":"26 26","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140373968","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

Modification of Pickle Goatskin with Silver Nanoparticles Using Brown Algae (Padina sp.) With Assisted Microwave 利用褐藻（Padina sp.）

KnE Life Sciences Pub Date : 2024-03-27 DOI: 10.18502/kls.v8i1.15394

Eli Rohaeti, Amalia Sultan Nanda Annisa, Rusita, K. Budiasih, N. Ariyanti

{"title":"Modification of Pickle Goatskin with Silver Nanoparticles Using Brown Algae (Padina sp.) With Assisted Microwave","authors":"Eli Rohaeti, Amalia Sultan Nanda Annisa, Rusita, K. Budiasih, N. Ariyanti","doi":"10.18502/kls.v8i1.15394","DOIUrl":"https://doi.org/10.18502/kls.v8i1.15394","url":null,"abstract":"The objectives of this study were to determine the effects of modification of goat skin with silver nanoparticles prepared using brown algae (Padina sp.) and assisted microwave on hydrophobic properties, antimicrobial activity, mechanical properties, and biodegradability of goat skin. The synthesis of silver nanoparticles was carried out using the microwave method with a bioreductor of brown algae extract (Padina sp.) and a stabilizer of a starch solution. Characterization of the resulting silver nanoparticles was conducted by determining the wavelength utilizing the UV-Vis instrument and the particle size with a particle size analyzer (PSA). Characterization of the modified goat skin was conducted by measuring hydrophobicity through the sessile drop method, the antimicrobial activity test on modified goat skin was done by determining the clear zone against Escherichia coli (gram-negative bacteria) and Staphylococcus epidermidis (gram-positive bacteria). The mechanical properties of modified goat skin were analyzed by measuring the tensile strength of the skin. The characterization with UV-Vis on the resulting silver nanoparticles revealed 426 nm in maximum absorption and the diameter of silver nanoparticles by using PSA was 58.2 nm. Based on atomic absorption spectroscopy (AAS), the study showed that as many as 99.25% of silver nanoparticle has coated the surface of pickle goat skin. The modification of goatskin by adding silver nanoparticle can increase antibacterial activity of goatskin. The contact angle and the tensile strength of goatskin after modification were 81.49","PeriodicalId":17898,"journal":{"name":"KnE Life Sciences","volume":"9 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140374624","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

Absorbance Optical Properties Calculation of ABX3 (A = Cs, Li; B = Pb; X = I, Br, Cl) Cubic Phase Using Density Functional Theory (DFT) Method 利用密度泛函理论（DFT）方法计算 ABX3（A = Cs、Li；B = Pb；X = I、Br、Cl）立方相的吸收光学特性

KnE Life Sciences Pub Date : 2024-03-27 DOI: 10.18502/kls.v8i1.15591

Aidha Ratna Fajarini Sidik, P. Pitriana, Hasniah Aliah

{"title":"Absorbance Optical Properties Calculation of ABX3 (A = Cs, Li; B = Pb; X = I, Br, Cl) Cubic Phase Using Density Functional Theory (DFT) Method","authors":"Aidha Ratna Fajarini Sidik, P. Pitriana, Hasniah Aliah","doi":"10.18502/kls.v8i1.15591","DOIUrl":"https://doi.org/10.18502/kls.v8i1.15591","url":null,"abstract":"Organic-inorganic perovskite is attracting much attention because it can be used for optoelectronic applications, such as solar cells and energy storage materials. In this study, we calculated the absorbance optical properties of perovskite ABX3 (A = Cs, Li; B = Pb; X = I, Br, Cl) in the cubic phase using DFT, one of the most common methods for analyzing the optical properties of materials. These studies were undertaken to determine the optical absorbance properties of the ABX3 perovskite as a potential for optoelectronic applications. The calculation was initiated by finding the optimization of pseudopotential and k_point, and pseudopotential GGA-PBE and k_point 8 x 8 x 8 are used as parameters to calculate absorbance optical properties. The absorbance calculation results are at a wavelength of 305.59 nm with a bandgap of 1.7608 eV for CsPbBr3, 380.78 nm with a bandgap of 2.27 eV for CsPbCl3, 301.86 nm with a bandgap of 1.35 eV for CsPbI3, 225.04 nm with a bandgap of 1.72 eV for LiPbBr3, 201.25 nm with a bandgap of 1.55 eV for LiPbCl3, and 211.58 nm with a bandgap of 1.24 eV for LiPbI3. These results indicate that ABX3 (A = Cs, Li; B = Pb; X = I, Br, Cl) has a good absorbance ability. These properties make ABX3 a potential material for optoelectronic applications. \u0000Keywords: absorbance, optical properties, ABX3, cubic phase, DFT","PeriodicalId":17898,"journal":{"name":"KnE Life Sciences","volume":"9 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140374276","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

COVID-19 Death Risk in Surabaya: Modeling by Spatial Point Process COVID-19 泗水的死亡风险：空间点过程建模

KnE Life Sciences Pub Date : 2024-03-27 DOI: 10.18502/kls.v8i1.15580

Dora Isnaini Putri, Vanda Fitriyanah, Achmad Choiruddin, Jerry Dwi Trijoyo Purnomo

{"title":"COVID-19 Death Risk in Surabaya: Modeling by Spatial Point Process","authors":"Dora Isnaini Putri, Vanda Fitriyanah, Achmad Choiruddin, Jerry Dwi Trijoyo Purnomo","doi":"10.18502/kls.v8i1.15580","DOIUrl":"https://doi.org/10.18502/kls.v8i1.15580","url":null,"abstract":"The total death rate or Case Fatality Rate (CFR) due to COVID-19 in Surabaya is high, that is almost twice of the global CFR (1.4%). Utilization of high-resolution data has the potential to explore COVID-19 cases, not only recording cases at the district or city level but also at the patient’s domicile level so that they can provide more detailed spatial information. Meanwhile, research exploring the risk of death from COVID-19, especially in Surabaya using spatial point process model, has not yet been carried out. In this study, an analysis of the risk of death from COVID-19 in Surabaya will be carried out using the inhomogeneous Poisson point process model with covariates or external factors used including the density of the COVID-19 referral hospital location and the proportion of confirmed COVID-19 population aged > 60 years per districts. Our model shows that referral hospitals (exp( ) = 1.03295) and places of worship (exp( ) = 1.03835) have a significant effect on death risk from COVID-19. So, there is a need for special handling for areas that have a population with a vulnerable age (> 60 years) where at this age the human immune system will decrease. \u0000Keywords: COVID-19, heath risk, spatial point process, surabaya","PeriodicalId":17898,"journal":{"name":"KnE Life Sciences","volume":"51 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140376727","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

Detecting Quantum Topologic Phase Transitions Through The C-Function 通过 C 函数探测量子拓扑相变

KnE Life Sciences Pub Date : 2024-03-27 DOI: 10.18502/kls.v8i1.15388

Samuel Juliardi Sinaga, Nadrah, Rizki Ananda, Misbah Misbah, N. Muhammad, Ruben Cornelius Siagian, Kevin William Andri Siahaan, Froilan D. Mobo

{"title":"Detecting Quantum Topologic Phase Transitions Through The C-Function","authors":"Samuel Juliardi Sinaga, Nadrah, Rizki Ananda, Misbah Misbah, N. Muhammad, Ruben Cornelius Siagian, Kevin William Andri Siahaan, Froilan D. Mobo","doi":"10.18502/kls.v8i1.15388","DOIUrl":"https://doi.org/10.18502/kls.v8i1.15388","url":null,"abstract":"Topological Quantum Field Theory or TQFT is a quantum field theory that calculates topological invariance in measurement theory and mathematical physics. In recent years, several attempts have been made to find efficient observations to determine the TQFT of quasiparticle properties. In this paper, we propose a different and very effective way to detect the critical points of TQFT by considering the system functions. We suggest the C-Function as a novel probe that is accurate for detecting the location of critical points on topological quantum. The C-function uses a holographic model to show a topological quantum phase transition between a simple topological isolation phase and a gapless Weyl semimetal. The quantum tipping point displays a strong Lifshitz-like anisotropy in the spatial direction, and a quantum phase transition that does not follow the standard Landau paradigm. The C-function precisely shows the global features of quantum criticality and distinguishes very accurately between two separate zero-temperature phases. Considering the C-function relationship with entanglement entropy can detect quantum phase transitions and can be applied outside the holographic framework. \u0000Keywords: quantum topologic, phase transitions, c-function","PeriodicalId":17898,"journal":{"name":"KnE Life Sciences","volume":"46 6","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140376911","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