Nexo Revista Científica最新文献_第5页

Assessing the clustering effect for extraction and processing of raw materials (using the example of the Kuzbass cluster "Complex processing of coal and industrial waste") 评估原材料提取和加工的集群效应(以库兹巴斯集群“煤和工业废物的复杂处理”为例)

Nexo Revista Científica Pub Date : 2023-03-31 DOI: 10.5377/nexo.v36i02.16056

T. Tagaeva, D. Kritskiy

引用次数: 0

Estudio de estabilidad acelerada del ingrediente farmacéutico activo Bm86/pP0 por el método de arrhenius 阿伦尼乌斯法加速药物活性成分Bm86/pP0稳定性研究

Nexo Revista Científica Pub Date : 2023-03-31 DOI: 10.5377/nexo.v36i02.15993

Omar Díaz González, Roxana Barrios Taura, Rutdali María Segura Silva, Laritza Caridad Domínguez Rabilero, Amaury Pérez Sánchez

{"title":"Estudio de estabilidad acelerada del ingrediente farmacéutico activo Bm86/pP0 por el método de arrhenius","authors":"Omar Díaz González, Roxana Barrios Taura, Rutdali María Segura Silva, Laritza Caridad Domínguez Rabilero, Amaury Pérez Sánchez","doi":"10.5377/nexo.v36i02.15993","DOIUrl":"https://doi.org/10.5377/nexo.v36i02.15993","url":null,"abstract":"El estudio de estabilidad de proteínas es un proceso indispensable en la actualidad para el desarrollo de productos vacunales que contienen a éstas como principio activo. El presente trabajo se realizó en el Centro de Ingeniería Genética y Biotecnología de Camagüey, en el cual actualmente en el área de Desarrollo Tecnológico se trabaja en el diseño de una vacuna contra las garrapatas. El objetivo de este trabajo consistió en determinar el tiempo de inactivación de la proteína Bm86 portadora del péptido P0, aplicando para ello estudios acelerados de estrés térmico con el fin de predecir la estabilidad de la vacuna contra las garrapatas, tomando como base la ecuación de Arrhenius. Se realizaron además diferentes estudios para analizar las posibles vías de inactivación de la proteína Bm86. Los resultados obtenidos indicaron que a una temperatura de almacenamiento entre 2 °C y 8 °C la proteína, como ingrediente farmacéutico activo, posee un tiempo de duración predictivo de aproximadamente 2,5 años antes que se inactive un 10 % de la misma.","PeriodicalId":335817,"journal":{"name":"Nexo Revista Científica","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133564283","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

Development strategies of high-tech companies in China: Huawei and Tencent 中国高科技公司的发展战略:华为和腾讯

Nexo Revista Científica Pub Date : 2023-03-31 DOI: 10.5377/nexo.v36i02.16058

A. Dmitrienko, Maria Lipovenko, A. Gostilovich, Alexey Kolosov, Liu Ming

{"title":"Development strategies of high-tech companies in China: Huawei and Tencent","authors":"A. Dmitrienko, Maria Lipovenko, A. Gostilovich, Alexey Kolosov, Liu Ming","doi":"10.5377/nexo.v36i02.16058","DOIUrl":"https://doi.org/10.5377/nexo.v36i02.16058","url":null,"abstract":"Currently, China is the second largest economy in the world and a rapidly developing innovative country. The improving position of China is evident not only from the rankings of the largest innovative companies but also from the reaction of major Western nations (once technological leaders) to China’s achievements in high-tech industries. Their biggest concerns refer to increased control over foreign direct investment from China, the cancellation of major investment deals, the refusal of the services of Chinese companies due to a threat to national security, the trade war between the United States and China, etc. This article aims at identifying and analyzing the development strategies of high-tech companies in China as exemplified by its largest national companies: Huawei and Tencent. The authors used such methods as document analysis, analysis of quantitative data, comparative analysis, and synthesis. While studying the development strategies of the most prominent high-tech companies in China, Huawei and Tencent, the authors confirmed the general trends of their innovative development, including active investment in new technologies (artificial intelligence, cloud services, blockchain, big data, Internet of things, digital platforms), expanding the network of users and deepening connections between them, as well as personalizing services.","PeriodicalId":335817,"journal":{"name":"Nexo Revista Científica","volume":"195 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127518312","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: 1

Green routing of multi-objective transport vehicles with cross docks under the time window constraint 时间窗约束下跨码头多目标运输车辆的绿色路径选择

Nexo Revista Científica Pub Date : 2023-03-31 DOI: 10.5377/nexo.v36i02.16064

Farhad Bavar, M. Sabzehparvar, Mona Ahmadi Rad

{"title":"Green routing of multi-objective transport vehicles with cross docks under the time window constraint","authors":"Farhad Bavar, M. Sabzehparvar, Mona Ahmadi Rad","doi":"10.5377/nexo.v36i02.16064","DOIUrl":"https://doi.org/10.5377/nexo.v36i02.16064","url":null,"abstract":"In this research, a model for green routing of vehicles in the network of cross docks under time window constraints is presented. In this model, there are two goals, include reducing the cost of transportation and reducing the emission of environmental pollutants, reducing fuel. In general, the goal of the model is to obtain the best route in the distribution network, which imposes the lowest cost on the network and, in addition, minimizes fuel consumption. The presented model was solved with GAMS software. As the dimensions of the problem increase, the execution time of the program increases drastically, and this indicates that the problem is NP-hard. Therefore, in order to solve the model in large dimensions, the meta-heuristic non-dominant sorting genetic algorithm, NSGAII, was used. The results of examining various problems with the meta-heuristic algorithm show a very high efficiency of the presented algorithms in terms of time to solve the problem. The results showed that the proposed model, in addition to reducing the total cost of transportation and the cost of constructing cross docks in the candidate points, also reduced the emission of environmental pollutants. Also, according to the mentioned time window, the products were sent to the customers on time.","PeriodicalId":335817,"journal":{"name":"Nexo Revista Científica","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127216399","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

Designing the technology and composition of plant extracts using reduced atmospheric pressure 设计减压提取植物提取物的工艺和组成

Nexo Revista Científica Pub Date : 2023-03-31 DOI: 10.5377/nexo.v36i02.16021

Elena Titorenko, E. Ermolaeva, P. Ivanov, Yu. S. Ustinova

{"title":"Designing the technology and composition of plant extracts using reduced atmospheric pressure","authors":"Elena Titorenko, E. Ermolaeva, P. Ivanov, Yu. S. Ustinova","doi":"10.5377/nexo.v36i02.16021","DOIUrl":"https://doi.org/10.5377/nexo.v36i02.16021","url":null,"abstract":"The study aims to establish the regimes and parameters of extraction of bioactive substances from raw plant materials by means of extraction with reduced atmospheric pressure for the purpose of manufacturing non-alcoholic functional syrups. The work is performed by leading specialists of the Kemerovo State University using conventional methods. Preparation of the extracts involves aqueous alcoholic treatment of the crushed mass of raw plant materials selected according to the functional parameters. Extraction is performed in a Soxhlet extractor with an advanced liquid ring vacuum pump. The extraction process is monitored by changes in the content of terpenoids in the extract obtained and the mass fraction of dry matter. As a result, the study establishes the parameters and regimes for carrying out and intensifying the extraction of terpenoids and dry matter from fennel, anise, caraway, and dill: pressure – 0.2 MPa, extraction temperature – 50°С, duration of the process – 45 min, solvent – 40 % aqueous alcoholic solution, raw material particle size – 2-3 mm. These process conditions guarantee the highest degree of extraction of terpenoids and dry matter from raw materials, as well as reduce the time and economic costs.","PeriodicalId":335817,"journal":{"name":"Nexo Revista Científica","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132624600","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

Design of bio-inspired irregular porous structure applied to intelligent mobility products 应用于智能出行产品的仿生不规则多孔结构设计

Nexo Revista Científica Pub Date : 2023-03-31 DOI: 10.5377/nexo.v36i02.16018

E. Armendáriz-Mireles, Francisco D. Raudi-Butrón, Melissa A. Olvera-Carreño, E. Rocha-Rangel

{"title":"Design of bio-inspired irregular porous structure applied to intelligent mobility products","authors":"E. Armendáriz-Mireles, Francisco D. Raudi-Butrón, Melissa A. Olvera-Carreño, E. Rocha-Rangel","doi":"10.5377/nexo.v36i02.16018","DOIUrl":"https://doi.org/10.5377/nexo.v36i02.16018","url":null,"abstract":"Material structure is a crucial part of the design of any product where the intention is to dissipate loads and lighten material. Because some structures today are increasingly complex in geometry and internal structure, it becomes impossible to opt for traditional methods to manufacture them. In this sense, additive manufacturing enables the creation of complex structures with intricate geometries. As manufacturers seek to optimize material properties and performance in a variety of stress conditions, bio-inspired engineering looks at nature for solving the most complex human challenges. By imitating nature’s patterns and shapes, we can optimize fracture resistance, energy absorption, and toughness in materials. In this work, we employ voronoi tessellation patterns and computer-aided design software to design an algorithm for the creation of irregular porous structures, similar to those found in nature (e.g., trabecular bone). This algorithm is scalable and applicable to any product that needs to comply with lightweight requirements and outstanding mechanical properties. Herein, the authors perform static compression tests to determine mechanical properties. The results indicated that the mechanical properties depend directly on the microstructural characteristics of the porous structure itself. Besides, surface area and porosity are the principal parameters to be controlled. Finally, the algorithm has a wide range of engineering applications in the automotive and aerospace industries.","PeriodicalId":335817,"journal":{"name":"Nexo Revista Científica","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122139235","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: 1

Bioleaching of Iron and Zinc from a galvanized steel waste from automotive industry using Acidithiobacillus thiooxidans: a case of study of the bajío area in México 利用酸性硫氧化硫杆菌从汽车工业镀锌废钢中生物浸出铁和锌:以马姆萨伊克bajío地区为例

Nexo Revista Científica Pub Date : 2023-03-31 DOI: 10.5377/nexo.v36i02.15994

Francisco Armando Granados-Contreras, Vivian Hayde Aguilar-Molina, G. Fierros-Romero, D. E. Zazueta-Álvarez, H. Medrano-Roldán, M. Gómez Ramírez, N. Rojas-Avelizapa

引用次数: 0

Incidencias del tipo de empleo sobre niveles de salud de trabajadores urbanos en 17 municipios de Nicaragua: Un estudio a pequeña escala 2021-2022 尼加拉瓜17个城市的就业类型对城市工人健康水平的影响:2021-2022年的小规模研究

Nexo Revista Científica Pub Date : 2023-03-31 DOI: 10.5377/nexo.v36i02.16001

Laura Sofía Angulo Gago, Raúl Enrique Godínez Balmaceda, Axsell Moises López Cerrato

引用次数: 0

Analysis of the Degree of Use of Balanced Scorecard Metrics in Agro-industrial Companies Based on Strategic Goals 基于战略目标的农工企业平衡计分卡指标使用程度分析

Nexo Revista Científica Pub Date : 2023-03-31 DOI: 10.5377/nexo.v36i02.16020

Gabriela De Vasconcelos, Antônio André Cunha Callado, Aldo Leonardo Cunha Callado

{"title":"Analysis of the Degree of Use of Balanced Scorecard Metrics in Agro-industrial Companies Based on Strategic Goals","authors":"Gabriela De Vasconcelos, Antônio André Cunha Callado, Aldo Leonardo Cunha Callado","doi":"10.5377/nexo.v36i02.16020","DOIUrl":"https://doi.org/10.5377/nexo.v36i02.16020","url":null,"abstract":"The objective of the article is to analyze the degree of use of performance indicators associated with the four perspectives of the Balanced Scorecard considering different strategic goals in the context of agro-industrial companies. Samples of rural companies located in the State of Pernambuco have been investigated considering the adoption of strategic goals associated with innovation, improvement and continuity, carrying out the use of 48 performance indicators, classified from four perspectives of the Balanced Scorecard. The data was collected through surveys structured from a questionnaire. Two different statistical techniques were used to analyze the results: descriptive statistics and the Kruskal-Wallis test. The results obtained demonstrate the identification of traits regarding the group of performance indicators that have obtained high percentages of use in the three strategic goals tested. It was observed that the companies that adopt strategic goals regarding continuity, presented declared standards of use that are lower than those presented by companies that adopt strategic innovation and improvement goals. No statistically significant discrepancies were found regarding the intensity of use of the indicators of the Balanced Scorecard perspectives when the joint analysis of internal balance considering each of the strategic goals.","PeriodicalId":335817,"journal":{"name":"Nexo Revista Científica","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121776430","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

Impact of Digital Tools and Technologies on The Effectiveness of Financial Control 数字工具和技术对财务控制有效性的影响

Nexo Revista Científica Pub Date : 2023-03-31 DOI: 10.5377/nexo.v36i02.16063

E. Bochkareva, P. Kurdyuk, E.V. Voronenko, E. Farikova

{"title":"Impact of Digital Tools and Technologies on The Effectiveness of Financial Control","authors":"E. Bochkareva, P. Kurdyuk, E.V. Voronenko, E. Farikova","doi":"10.5377/nexo.v36i02.16063","DOIUrl":"https://doi.org/10.5377/nexo.v36i02.16063","url":null,"abstract":"The article presents dwells on the legal consolidation of the principles of public financial control in the era of digitalization and used as part of the control of digital tools and technologies in the Russian legal field. The study materials include the Constitution of the Russian Federation, Russian and international legal acts (laws and standards), and the websites of Russian public authorities with powers in the field of financial control. To process such materials, the authors used technical and legal analysis as the main method. They conclude that the legal regulation of the principles of public financial control in the Russian Federation is fragmentary. Based on the study of network information resources of Russian public authorities, there is a set of digital tools and technologies used to organize and conduct financial and control activities in a non-contact form. This system includes three main blocks: information systems, personal accounts, and registers. According to the authors, the legal relations that arise in connection with the use of digital tools in financial control are heterogeneous: some are directly related to particular digital technologies (tools); others do not consider a digital product an object of legal relations and assign it an auxiliary value.","PeriodicalId":335817,"journal":{"name":"Nexo Revista Científica","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129594257","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: 1