Petroleum and Chemical Industry International最新文献_第2页

Evaluation of Biochemical Behavior and Stability of Gold Nanoparticles with High Intrinsic Peroxidase-Like Activity 具有高内在过氧化物酶样活性的金纳米颗粒的生化行为和稳定性评价

Petroleum and Chemical Industry International Pub Date : 2023-08-02 DOI: 10.33140/pcii.06.04.02

{"title":"Evaluation of Biochemical Behavior and Stability of Gold Nanoparticles with High Intrinsic Peroxidase-Like Activity","authors":"","doi":"10.33140/pcii.06.04.02","DOIUrl":"https://doi.org/10.33140/pcii.06.04.02","url":null,"abstract":"In this study, the biochemical behavior and stability of gold nanoparticles with intrinsic peroxidase-like activity were evaluated as potential native enzyme alternatives. The gold nanoparticles were synthesized at physiological temperature using bovine serum albumin as the stabilizer and then characterized by the TEM imaging method. Afterward, their peroxidase-like activity was checked upon irreversible oxidation of 3,3’-diaminobenzidine to produce a brown-colored indamine polymer, and the specific enzyme-like activity of the as-prepared nanoparticles was also calculated. The results showed a specific activity as high as 0.4212 UI µM-1 for the as-prepared gold nanoparticles. Thereafter, their stability and biochemical performances were evaluated considering their enzyme-like activity as a reliable index. The as-prepared nanoparticles showed their maximal activity at pH=5.0 and 20.0±1.0 ℃ according to the results of pH and thermal stability studies, in order. Besides, the nanoparticles saved above 80.0% of their maximal activity over pH=3.0-4.0. As a significant advantage compared to the natural enzymes, the as-synthesized gold nanoparticles revealed a pHindependent enzyme-like activity over a wide pH range of pH=7.0-10.0 along with a temperature-independent activity over t=23-28℃. The salt stability studies showed that their activity was not affected by variations in the ionic strength of the reaction media. The kinetics results showed a Vmax of 83.3 µM min-1 and a Km as very low as 0.005 M for the gold nanoparticles. Considering the above results, the as-prepared gold nanoparticles can be considered high stable nanozymes with high intrinsic peroxidase-like activity and excellent catalytic efficiency.","PeriodicalId":355186,"journal":{"name":"Petroleum and Chemical Industry International","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134215609","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: 5

Successful Practical Case Studies Solved at our P&U, NRL 成功的实际案例研究在我们的P&U, NRL解决

Petroleum and Chemical Industry International Pub Date : 2023-07-28 DOI: 10.33140/pcii.06.03.08

引用次数: 0

Enhancing the Glacial Lake Inventory in Bhutan through Semi-Automatic Techniques using Google Earth Engine and QGIS for the Phochhu Basin 利用谷歌地球引擎和QGIS的半自动技术增强不丹冰川湖泊清查

Petroleum and Chemical Industry International Pub Date : 2023-07-27 DOI: 10.33140/pcii.06.04.01

Chimi Selden, Rinchen Norbu

引用次数: 0

Mass and Energy Balance Model Process to Maximize Efficiency and Productivity in Biofuel Production From Almond Fruit. 质量和能量平衡模型过程，以最大限度地提高从杏仁果生产生物燃料的效率和生产力。

Petroleum and Chemical Industry International Pub Date : 2023-06-24 DOI: 10.33140/pcii.06.03.07

I. O. Adewumi, I. O. Adewumi1, V. O. Feyiji2

引用次数: 0

Adoption of Pareto Charts in the Analysis of Input Variables Interaction and Selection of Input-Output Pairings in a Refinery Fluid Catalytic Cracking Unit 用帕累托图分析炼油流体催化裂化装置输入变量相互作用及输入产出对选择

Petroleum and Chemical Industry International Pub Date : 2023-06-20 DOI: 10.33140/pcii.06.03.06

{"title":"Adoption of Pareto Charts in the Analysis of Input Variables Interaction and Selection of Input-Output Pairings in a Refinery Fluid Catalytic Cracking Unit","authors":"","doi":"10.33140/pcii.06.03.06","DOIUrl":"https://doi.org/10.33140/pcii.06.03.06","url":null,"abstract":"This paper presents a study of the effects of input variables (main factors) and their couplings on key process variables(responses) in a refinery fluid catalytic cracking (FCC)unit using pareto analysis. Five responses namely, Riser temperature(Trx),Regenerator temperature(Trg) ,flue gas oxygen concentration, (Od ),Gasoline yield(y2 ), Light gases yield(y3 )) and four main factors, namely gasoil feed rate(Fgr), regenerated catalyst flow rate(Frc),combustion air flow rate(Fa ), combustion air temperature(Ta )and were studied in a regular two-layer experimental design that generated 32 numerical experiments. A combination of Design Expert software and an in-mouse FCC unit simulator was used to conduct the numerical experiments from which pareto plots were generated as a tool for response-factor analysis. Results from this study show that Frc and Fgr are the only significant main factors with respect to riser temperature response. While the significance is of the order Frc> Fgr, Frc produced negative effect while Fgr produced positive effect on riser temperature while the interaction factor (Fgr+Frc) is the only cross-coupling .Cross -coupling of variables is more significant in the regenerator as two interaction factors (Fgr+Frc) and (Frc+Fa ) featured prominently and produced significant effects on regenerator temperature and flue gas oxygen concentration, respectively. The ranking of the effects on regenerator temperature is Frc>Fa > Fgr while that on flue gas oxygen concentration is Frc>Fgr>Fa . Results further show that while Frc, Fgr and Fa produced positive effects on regenerator temperature, only Fa produced negative effects in flue gas oxygen concentration. Moreover, the four main factors in this study and their couplings did not dhow direct effects on gasoline yield and light gases yield respectively. The results are in tandem with FCC unit behaviour and thus assert the merit in the adopted tool.","PeriodicalId":355186,"journal":{"name":"Petroleum and Chemical Industry International","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127160097","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

Sustainable System for CO2 Capturing with Multiple Products 可持续的多产品二氧化碳捕获系统

Petroleum and Chemical Industry International Pub Date : 2023-06-20 DOI: 10.33140/pcii.06.03.05

{"title":"Sustainable System for CO2 Capturing with Multiple Products","authors":"","doi":"10.33140/pcii.06.03.05","DOIUrl":"https://doi.org/10.33140/pcii.06.03.05","url":null,"abstract":"Currently, we are facing several serious issues, including diseases, climate change, economics, and wars. Among them, which needs to be resolved imminently to protect the future generations. Recently, we developed an innovative CO2 fixation and storage method based on the use of chemical compounds such as NaOH and CaCl2, to prevent the climate crisis. Herein, the electrolysis of a NaCl solution or seawater was performed to make the resultant NaOH react with CO2. Amines that react with CO2 were also examined. Moreover, seawater was used to produce CaCO3 rather than the CaCl2 solution. Although amines are currently used to capture CO2 from exhaust gases, the thermal treatment of the amine–CO2 complex solution is necessary to release CO2. Thermal treatment requires energy that eventually produces CO2 and induces the degradation of organic amines. However, the CO2 captured in the amine or NaOH solution was released easily by acidifying the CO2-containing solutions. Moreover, HCl could release CO2 from hydro carbonates, Ca(OH)2, Mg(OH)2, and mMgCO3·Mg(OH)2·nH2O, as well as from mineral carbonates, CaCO3 and MgCO3. This simple method of releasing the captured CO2 from the amine–CO2 complexes, hydro carbonates, and mineral carbonates is crucial to obtain pure CO2 for additional usage as an original material.","PeriodicalId":355186,"journal":{"name":"Petroleum and Chemical Industry International","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128517398","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

Plasmon-Induced Flexibility and Refractive Index Measurement in a Sensor Designed By A Cavity, Two Rings, Two Teeth and Two Plasmonic Waveguides 由一个腔、两个环、两个齿和两个等离子体波导设计的传感器的等离子体诱导柔韧性和折射率测量

Petroleum and Chemical Industry International Pub Date : 2023-06-09 DOI: 10.33140/pcii.06.03.04

引用次数: 0

Culture Issues and Concerns in Organizational Development, With a Case Study of Federal College of Agriculture, Ibadan, Nigeria Employees 组织发展中的文化问题与关注，以尼日利亚伊巴丹联邦农业学院雇员为例

Petroleum and Chemical Industry International Pub Date : 2023-05-18 DOI: 10.33140/pcii.06.03.02

{"title":"Culture Issues and Concerns in Organizational Development, With a Case Study of Federal College of Agriculture, Ibadan, Nigeria Employees","authors":"","doi":"10.33140/pcii.06.03.02","DOIUrl":"https://doi.org/10.33140/pcii.06.03.02","url":null,"abstract":"Culture is characterized as the language, convictions, values, standards, practices, and even material items went starting with one age then onto the next. There is material culture which involves adornments, craftsmanship, building, machines, apparel, haircuts and so forth while nonmaterial culture is a gathering's perspective (convictions, qualities and suppositions) and regular examples of conduct (language, signals, and different types of communication).The study focus on culture issues and concerns in organizational development, with a case study of Federal College of Agriculture, Ibadan, Nigeria employees. The three staff unions were examined using questionnaire approach with has two major parts. Part I deals with the attributes of the respondents. While Part II was embraced from the \"Organizational Culture Assessment Instrument (OCAI)\" created by Cameron and Quinn in 1999. The OCAI depends on a hypothetical model titled the \"Contending Values Framework\". The study revealed that the management has to deal with cultural differences when managing staff and students. These study has clearly shows that, it is unavoidable to make mistake in dealing with culture and feel muddled andconfuses. The real issue is how quickly we are prepared to learn from mistakes”.","PeriodicalId":355186,"journal":{"name":"Petroleum and Chemical Industry International","volume":"72 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127370402","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

Decomposition of Fungus Chytrid 菌壶菌的分解

Petroleum and Chemical Industry International Pub Date : 2023-05-18 DOI: 10.33140/pcii.06.03.03

S. Ubani

引用次数: 0

Effect of Jeffrey Fluid Flow and First Order Chemical Reaction on Magneto Convection of Immiscible Fluids in a Perpendicular Passage 杰弗里流体流动和一级化学反应对垂直通道中非混相流体磁对流的影响

Petroleum and Chemical Industry International Pub Date : 2023-05-16 DOI: 10.33140/pcii.06.03.01

A. Sharan, S. Kalyan, J. ChamkhaAli

引用次数: 0