bluuebunny/crossref_metadata_2025 huggingface dataset:
A Review of Heat Batteries Based PV Module Cooling—Case Studies on Performance Enhancement of Large-Scale Solar PV System
Authors: Velmurugan Karthikeyan , Elavarasan Rajvikram Madurai , De Pham Van , Karthikeyan Vaithinathan , Korukonda Tulja Bhavani , Dhanraj Joshuva Arockia , Emsaeng Kanchanok , Chowdhury Md. Shahariar , Techato Kuaanan , El Khier Bothaina Samih Abou , Attia El-Awady
Published: February 2022

Several studies have concentrated on cooling the PV module temperature (TPV) to enhance the system’s electrical output power and efficiency in recent years. In this review study, PCM-based cooling techniques are reviewed majorly classified into three techniques: (i) incorporating raw/pure PCM behind the PV module is one of the most straightforward techniques; (ii) thermal additives such as inter-fin, nano-compound, expanded graphite (EG), and others are infused in PCM to enhance the heat transfer rate between PV module and PCM; and (iii) thermal collectors that are placed behind the PV module or inside the PCM container to minimize the PCM usage. Advantageously, these techniques favor reusing the waste heat from the PV module. Further, in this study, PCM thermophysical properties are straightforwardly discussed. It is found that the PCM melting temperature (Tmelt) and thermal conductivity (KPCM) become the major concerns in cooling the PV module. Based on the literature review, experimentally proven PV-PCM temperatures are analyzed over a year for UAE and Islamabad locations using typical meteorological year (TMY) data from the National Renewable Energy Laboratory (NREL) data source in 1 h frequency.
Embodied Carbon Emissions and Regional Transfer Characteristics—Evidence from China
Authors: Zhao Hehua , Chen Hongwen , He Lei
Published: February 2022

China has a considerable impact on climate change, as it is the world’s largest developing country. Its carbon emissions are also a global concern. This research employed a multi-region input–output model to estimate the local emission effect and the regional spillover effect caused by the demand for intermediate and final products, to analyze the interregional flow of carbon emissions, and to identify the main industries causing domestic carbon emissions in China from 2007 to 2012. A structural path analysis model was used to evaluate the contribution of different factors and demand types to changes in carbon emissions. The following findings were obtained in this study: (1) The regional spillover effect of carbon emissions driven by domestic demand is characterized by inland provinces’ demand leading to emissions in coastal provinces. (2) Electricity, nonmetallic minerals, and metals are the key industries for carbon emissions. (3) The results of the SDA indicate that the scale effect is the main driving force for the growth in carbon emissions caused by domestic demand in China. Fixed capital formation is the most critical demand factor influencing carbon emissions. This study provides new insights into the characteristics of regional emission transfer in China. The conclusion of this paper is helpful to China in achieving carbon peak and carbon neutrality.
Modeling of Food Consumption Behavior in the Quarantine Period Applied during the Coronavirus SARS-CoV-2 (COVID-19) Outbreak in Turkey
Authors: Zuluğ Asli , Temur Dilay Merve , Kaya Sevda , Ertem Müge
Published: February 2022

The spread of coronavirus worldwide has affected consumer behavior in many ways. This paper tries to investigate the impact of the SARS-CoV-2 (COVID-19) on food consumption behavior of consumers. Food consumption motivation data were assessed and compared before, during, and after the quarantine. An online survey was conducted among about 900 people from 54 different cities in Turkey, between April and May 2020, trying to understand consumers’ changing behavior in their food choices, preferences, and habits during the pandemic period. The aim of this paper is (i) to examine how consumer preferences were influenced by the COVID-19 quarantine period, using an ordered probit analysis, and (ii) to identify differences in the preferences for the food itself, food disinfection and cooking, and shopping preferences before and during the quarantine. Finally, as per the consumers’ body mass index (BMI), correlation with their mood and eating frequencies was observed. The findings indicate that, under stress conditions, like the quarantine period, food preferences and eating behavior changed, and consumers put all those emotions and information into their consumption process.
Sustainable Tourism Development Based upon Visitors’ Brand Trust: A Case of “100 Religious Attractions”
Authors: Wang Kuo-Yan
Published: February 2022

This study examines tourist trust in a government-initiated tourism brand from the perspective of the economic sustainability of the tourism industry. Its antecedents comprise traveler visit motivation, visitor experience perception, and willingness to visit/revisit, and the study assesses the moderating role of believers/nonbelievers in developing a tourism brand. The data were obtained from 20 notable religious-themed attractions listed among the “100 Religious Attractions” in Taiwan. Self-administered questionnaires were distributed to respondents who had visited, or were planning to visit, the listed attractions. Three hundred and eighty-five valid questionnaires were collected with the hypotheses developed and examined using the SEM method. This study analyzes the motivational and experiential differences between religious-oriented and ordinary visitors to the “100 Religious Attractions” and its brand effect concerning peripheral industry consumption behavior (e.g., food and beverage, religious items, and surrounding sightseeing sites). Last, this study discloses that the willingness to visit/revisit determinants, service value perception, and spiritual experience significantly affect tourism brand trust. These results offer a better understanding for both scholars and practitioners of religious-themed attractions regarding how tourists’ visit/revisit intentions and their willingness to consume affect the creation of tourism destination brand trust that is sustainable.
The Intellectual Domains of Sustainability Leadership in SMEs
Authors: Boeske Jane , Murray Peter A.
Published: February 2022

The goal of this paper is to review the intertwined range of conceptualizations that have blurred developing leadership knowledge regarding environmental sustainability. An examination of the leadership literature reveals differential descriptions about sustainable, environmental, and sustainability leadership which are increasingly being used to imply what sustainability-focused leaders do, their interactions, their relationships, and how they address sustainable challenges. While extant research supports that leadership is a critical capability to respond and adapt to constant external environmental and economic upheaval in large firms, agreement about the types of leadership practices necessary to achieve positive environmental sustainability and eco-efficient outcomes is less clear in Small and Medium Enterprises (SMEs). To resolve these problems, we synthesize the sustainable, environmental and sustainability leadership literature by (a) reviewing and clarifying these leadership constructs, (b) theoretically unravelling these overlapping concepts, and (c) developing an integrated framework of intellectual capital and sustainability leadership practices. From a theoretical perspective, this paper seeks to make a significant contribution to the scholarly leadership literature by offering several leadership classifications of skills and knowledge relevant to leadership knowledge domains. Given that extant research has conflated many leadership approaches, this paper builds on the theoretical knowledge of the kind of leadership skills required for sustainability leadership. From a practical perspective, we provide SME leaders with knowledge about the types of leadership practices, behaviours, and activities that will enhance sustainable productivity in their firms. The paper is designed to advance a new way of thinking about existing sustainability leadership by presenting an original contribution that alters and reorganizes potential causal maps, that are potentially more valuable. Whilst most of the leadership research involves large firms, we seek to better understand and inform sustainability leadership in SMEs.
Smart Bio-Agents-Activated Sustainable Self-Healing Cementitious Materials: An All-Inclusive Overview on Progress, Benefits and Challenges
Authors: Huseien Ghasan Fahim , Nehdi Moncef L. , Faridmehr Iman , Ghoshal Sib Krishna , Hamzah Hussein K. , Benjeddou Omrane , Alrshoudi Fahed
Published: February 2022

Cementitious materials deteriorate progressively with the formation of cracks that occur due to diverse physical, chemical, thermal, and biological processes. Numerous strategies have been adopted to obtain cement-based self-healing materials and determine the novel self-healing mechanisms. The uses of microbes have been established to improve the thickness of the healed crack and mechanical properties of the concrete, a phenomenon seldom addressed in the literature. Based on these factors, this article comprehensively appraises the smart bio-agents-based autonomous healing performance of concrete to demonstrate the recent progress, expected benefits, and ongoing challenges. The fundamentals, design strategies, and efficacy of the smart bio-agents-activated self-healing cementitious materials are the recurring themes of this overview. Furthermore, the effects of various processing parameters on the performance of cementitious self-healing smart bio-agents are discussed in-depth. The achievements, knowledge gaps, and needs for future research in this ever-evolving area for the sustainability and resilience of the built environment are highlighted.
Effect of Consecutive Application of Phosphorus-Enriched Biochar with Different Levels of P on Growth Performance of Maize for Two Successive Growing Seasons
Authors: Wali Farman , Sardar Shahid , Naveed Muhammad , Asif Muhammad , Nezhad Mohammad Tahsin Karimi , Baig Khurram Shehzad , Bashir Mohsin , Mustafa Adnan
Published: February 2022

Sustainable management of phosphorus (P) is one of the burning issues in agriculture because the reported P losses, when applied in the form of mineral fertilizer, give rise to another issue of water pollution as P is considered one of the limiting nutrients for eutrophication and so results in costly water treatments. In the present study, the enrichment of biochar with mineral P fertilizer was supposed to reduce such losses from the soil. Additionally, P can also be recycled through this technique at the same time as biochar is derived from biomass. Biochar was prepared using wheat straw followed by its enrichment with di-ammonium phosphate (DAP) at the ratio of 1:1 on a w/w basis. The first pot trial for spring maize (cv. Neelam) was conducted using phosphorus-enriched biochar (PEB) at 0% and 1% with different levels of recommended P (0%, 25%, 50%, and 100%). The treatments were arranged factorially under a complete randomized design (CRD) with three replications. After harvesting the spring maize, pots were kept undisturbed, and a second pot trial was conducted for autumn maize in the same pots to assess the residual impact of 1% PEB. In the second pot trial, only inorganic P was applied to respective treatments because the pots contained 1% PEB supplied to spring maize. The results revealed that the application of 1% PEB at P level 50% significantly increased all the recorded plant traits (growth, yield, and physiological and chemical parameters) and some selected properties of post-harvest soil (available P, organic matter, and EC) but not soil pH. In terms of yield, 1% PEB at 50% P significantly increased both the number of grains and 100-grain weight by around 30% and 21% in spring and autumn maize, respectively, as compared to 100% P without PEB. It is therefore recommended that P-enriched biochar should be used to reduce the inorganic P fertilizer inputs; however, its application under field conditions should be assessed in future research.
Classification of Coarse Aggregate Particle Size Based on Deep Residual Network
Authors: Sun Zhaoyun , Li Yuxuan , Pei Lili , Li Wei , Hao Xueli
Published: February 2022

Traditional aggregate particle size detection mainly relies on manual batch sieving, which is time-consuming and inefficiency. To achieve rapid automatic detection of aggregate particle sizes, a mechanical symmetric classification model of coarse aggregate particle size, based on a deep residual network, is proposed in this paper. First, aggregate images are collected by the optical vertical projection acquisition platform. The collected aggregate images are corrected, and their geometric parameters are extracted. Second, various digital image processing methods, such as size correction and morphological processing, are used to improve the image quality and enlarge the image dataset of different aggregate particle sizes. Then, the deep residual network model (ResNet50) is built to train the aggregate image dataset to achieve accurate classification of aggregate sizes. Finally, compared with the traditional single geometric particle size classification model, the comparative results show that the accuracy of the coarse aggregate classification model proposed in this paper is nearly 20% higher than that of the traditional method, reaching 0.833. The proposed model realizes the automatic classification of coarse aggregate particle size, which can significantly improve the efficiency of aggregate automatic detection.
Environmental Risk Assessment of Oxaliplatin Exposure on Early Life Stages of Zebrafish (Danio rerio)
Authors: Di Paola Davide , Capparucci Fabiano , Abbate Jessica , Cordaro Marika , Crupi Rosalia , Siracusa Rosalba , D’Amico Ramona , Fusco Roberta , Genovese Tiziana , Impellizzeri Daniela , Cuzzocrea Salvatore , Spanò Nunziacarla , Gugliandolo Enrico , Peritore Alessio
Published: February 2022

Pharmaceuticals are actually identified as a threat to the ecosystem. Nowadays, the growing consumption of antineoplastic agents has been related to their continuous input in natural environments. These substances can interfere with physiological and biochemical processes of aquatic species over their entire life cycle. Oxaliplatin (OXA) is a widely used chemotherapeutic agent to treat colon or rectal cancer. This study was aimed to evaluate the developmental toxicity of the OXA exposure. To this end, zebrafish embryos were incubated with 0.001, 0.1, 0.5 mg/L OXA. At different timepoints mortality rate, hatching rate, developmental abnormalities, histological analysis, oxidative stress and mRNA expression of gene related to oxidative stress were evaluated. Our results showed that OXA exposure can induce increased mortality and developmental abnormalities reducing the hatching rate. Histological analysis demonstrated that OXA induced liver, intestine, muscle and heart injury. Superoxide dismutase and catalase activities were significantly increased after OXA exposure demonstrating its oxidative effects. The mRNA expression levels of apoptosis-related genes (caspase-3, bax and bcl-2) were significantly upregulated by OXA exposure. In conclusion, we highlighted that OXA exposure led to a dose-related developmental toxicity, oxidative stress and apoptosis.
A Review of the Tension between the T2K and NOνA Appearance Data and Hints to New Physics
Authors: Rahaman Ushak , Razzaque Soebur , Sankar Sankagiri Uma
Published: February 2022

In this article, we review the status of the tension between the long-baseline accelerator neutrino experiments T2K and NOνA. The tension arises mostly due to the mismatch in the apappearance data of the two experiments. We explain how this tension arises based on νμ→νe and ν¯μ→ν¯e oscillation probabilities. We define the reference point of vacuum oscillation, maximal θ23 and δCP and compute the νe/ν¯e appearance events for each experiment. We then study the effects of deviating the unknown parameters from the reference point and the compatibility of any given set of values of unknown parameters with the data from T2K and NOνA. T2K observes a large excess in the νe appearance event sample compared to the expected νe events at the reference point, whereas NOνA observes a moderate excess. The large excess in T2K dictates that δCP be anchored at −90° and that θ23 > π/4 with a preference for normal hierarchy. The moderate excess at NOνA leads to two degenerate solutions: (a) NH, 0 < δCP < 180°, and θ23 > π/4; (b) IH, −180° < δCP < 0, and θ23 > π/4. This is the main cause of tension between the two experiments. We review the status of three beyond standard model (BSM) physics scenarios, (a) non-unitary mixing, (b) Lorentz invariance violation, and (c) non-standard neutrino interactions, to resolve the tension.
Radon Mitigation Applications at the Laboratorio Subterráneo de Canfranc (LSC)
Authors: Pérez-Pérez Javier , Amare Julio Cesar , Bandac Iulian Catalin , Bayo Alberto , Borjabad-Sánchez Silvia , Calvo-Mozota Jose Maria , Cid-Barrio Laura , Hernández-Antolín Rebecca , Hernández-Molinero Beatriz , Novella Pau , Pelczar Krzysztof , Peña-Garay Carlos , Romeo Beatriz , Ortiz de Solórzano Alfonso , Sorel Michel , Torrent Jordi , Usón Alberto , Wojna-Pelczar Anna , Zuzel Grzegorz
Published: February 2022

The Laboratorio Subterráneo de Canfranc (LSC) is the Spanish national hub for low radioactivity techniques and the associated scientific and technological applications. The concentration of the airborne radon is a major component of the radioactive budget in the neighborhood of the detectors. The LSC hosts a Radon Abatement System, which delivers a radon suppressed air with 1.1±0.2 mBq/m3 of 222Rn. The radon content in the air is continuously monitored with an Electrostatic Radon Monitor. Measurements with the double beta decay demonstrators NEXT-NEW and CROSS and the gamma HPGe detectors show the important reduction of the radioactive background due to the purified air in the vicinity of the detectors. We also discuss the use of this facility in the LSC current program which includes NEXT-100, low background biology experiments and radiopure copper electroformation equipment placed in the radon-free clean room.
PreserFlo® MicroShunt: An Overview of This Minimally Invasive Device for Open-Angle Glaucoma
Authors: Gambini Gloria , Carlà Matteo Mario , Giannuzzi Federico , Caporossi Tomaso , De Vico Umberto , Savastano Alfonso , Baldascino Antonio , Rizzo Clara , Kilian Raphael , Caporossi Aldo , Rizzo Stanislao
Published: February 2022

For moderate-to-severe glaucoma, trabeculectomy remains the “gold standard” intraocular pressure (IOP)-lowering treatment; nonetheless, this method requires extensive post-operative maintenance. Microinvasive glaucoma surgery (MIGS) treatments are designed to lessen intra- and post-operative care burden while offering an acceptable IOP decrease for individuals with mild to moderate glaucoma. The PreserFlo® MicroShunt (previously InnFocus MicroShunt) is an 8.5 mm glaucoma drainage device manufactured from poly(styrene-block-isobutylene-block-styrene) (SIBS), an extremely biocompatible and bioinert material. The lumen is narrow enough to prevent hypotony, but big enough to avoid being obstructed by sloughed cells or pigment. The device is implanted ab externo, as a stand-alone procedure or in conjunction with cataract surgery, with intraoperative mitomycin C, and a bleb is produced under the conjunctiva and Tenon’s capsule. The MicroShunt was CE-marked in 2012 and designed for primary open-angle glaucoma, the IOP of which remains uncontrolled after maximally tolerated topical treatment. Several clinical trials evaluating the MicroShunt’s long-term safety and effectiveness have been conducted, highlighting the effectiveness of the device over time, along with a tolerable safety profile. The present review aims to gather evidence of PreserFlo’s effectiveness and safety results almost 10 years after its introduction, and furthermore, to compare it with other MIGS and with the gold-standard trabeculectomy for glaucoma management.
Hypofractionated radiosurgery treatment of skull base meningiomas
Authors:   SBHI N.V. Sklifosovsky Research Institute for Emergency Medicine of the Moscow Healthcare Department, Tokarev A.S. , Zuev S.E. ,   SBHI N.V. Sklifosovsky Research Institute for Emergency Medicine of the Moscow Healthcare Department, Grin A.A. ,   SBHI N.V. Sklifosovsky Research Institute for Emergency Medicine of the Moscow Healthcare Department, Evdokimova O.L. ,   SBHI N.V. Sklifosovsky Research Institute for Emergency Medicine of the Moscow Healthcare Department
Published: February 2022

The study objective is to analyze the results of hypofractionated radiosurgery treatment of patients with skull base meningiomas with a complex topographic and anatomical location using the Gamma Knife device. Materials and methods. The study was based on the results of examination and radiosurgery treatment of 36 patients (13 male, 23 female) with skull base meningiomas. Mean age (Me[Q25;Q75]) at the period of the treatment was 65 [42;88]. All patients underwent triple treatment in the dose hypofractionation mode with an interfractional interval of 1-2 days. The follow-up duration was 6-36 months. Results and discussion. All patients underwent control magnetic resonance imaging, which demonstrated tumor growth stabilization or decrease. There were no signs of continued growth and post-radiation reactions of neurotoxicity. The neuropathy of the cranial nerves during the control observation time remained at the preoperative level. The relative decrease in tumor size occurred faster in the group of patients with a tumor volume of more than 10 cm³. Conclusion. Hypofractionated stereotactic radiosurgery is safe and highly effective. High-level tumor control and a low incidence of post-radiation reactions make it possible to use the indicated method in the treatment of skull base meningiomas, involving the anterior parts of the visual analyzer and other radiosensitive structures.
The prevalence of depressive and anxiety disorders in patients with gastroesophageal reflux disease in the general medical network, taking into account concomitant pathology
Authors:   eoples' Friendship University of Russia,  Clinic «Bud Zdorov», Moscow, Basova Elena Aleksandrovna , Manyakin Ivan Sergeevich ,   Peoples' Friendship University of Russia,  Clinic «Bud Zdorov»
Published: February 2022

The aim of this work is to assess the prevalence and risk factors of depression in patients with gastroesophageal reflux disease (GERD) and patients with GERD and hypothyroidism. The survey was conducted in 124 adult patients. The Beck and Spielberger-Khanin scales were used to diagnose depression and anxiety. The prevalence of current depression was 29.4 % in patients with GERD and 60.0 % in patients with GERD and hypothyroidism. In the group of patients with GERD, personal anxiety is more pronounced, whereas in the group of patients with GERD and hypothyroidism, personal anxiety is less pronounced than situational anxiety.
Operation description and creating an analog VGA output on the debugging board when making programs for CNC machines
Authors:   Bauman Moscow State Technical University, Moscow, Yudachev S.S. , Sitnikov S.S., ,   Bauman Moscow State Technical University, Moscow, Gordienko N.A., ,   Bauman Moscow State Technical University, Moscow, Monakhov P.A. ,   Bauman Moscow State Technical University, Moscow
Published: February 2022

The priority task of the development of mechanical engineering is complex mechanization and automation of technological processes of mechanical processing. This problem can be solved by the introduction of machine tools and machine complexes with numerical control. CNC equipment combines the flexibility of universal and high performance of special automatic equipment, which significantly changes the nature of production and makes it mobile, meeting the requirements for continuous improvement and updating of mechanical engineering products. However, such equipment is quite complex, and its acquisition is associated with large financial costs, therefore, the problem of efficient use of CNC machines is a priority for most mechanical engineering enterprises and is inextricably linked with the need to create various programs. The article presents a theoretical analysis of the VGA interface, as well as a practical implementation of this interface, written in the Verilog programming language, on the Terasic DE10-Lite debugging board, with the MAX10 10M50DAF484C7G programmable logic integrated circuit and other peripheral modules. The practical significance of the work is familiarizing with programmable logic integrated circuits of the Intel FPGA family, obtaining basic knowledge in working with the Quartus Lite computer-aided design system (CAD), and learning the basics of programming programmable logic integrated circuits in the Verilog language. In the course of the work, the algorithm for writing code in the Verilog programming language for implementing the VGA interface on the DE10-Lite debugging board was described in detail. The software and mathematical excerpts used in the work are publicly available on the Internet, which allows anyone to carry out similar work and make sure that the written codes and the obtained conclusions are correct. This work can be used not only for writing programs for machine tools, but also for teaching students in the field of developing electronic devices in terms of their algorithmization and for organizing laboratory work, as well as for creating and designing real devices both in production and within a higher educational institution, for example, for developing laboratory work using specialized CAD. Familiarization and study of this programming language are conducted within the walls of one of the leading engineering universities of the Russian Federation, the Bauman Moscow State Technical University.
Construction mechanics of the load bearing structure of the cosmonaut landing and evacuation unit
Authors:   Bauman Moscow State Technical University, Moscow, Petrunicheva A.S. , Nikolaev A.D. ,   Bauman Moscow State Technical University, Moscow
Published: February 2022

The analysis of emergency situations is a determining factor for all safety work, and its results largely determine the subsequent technical solutions in the development of emergency rescue equipment. When analyzing emergency situations, experts consider their distribution by location (by on-board and ground systems) and by the time of occurrence, determine the causes and probability of their occurrence, the nature of their development by time, as well as consequences and significance for the subsequent flight. It is necessary to highlight situations caused by on-board system failures among the emergency situations, the occurrence probability of which is the highest. Such emergencies, as a rule, are subject to the most thorough analysis. As the results of flight tests of rocket and space equipment show, failures are distributed unevenly across the systems: the greatest probability of failures is in on-board launch vehicle systems, less - in PTK systems, and even less - in ground systems. This is due to the fact that on-board PTK systems operate mainly in the standby (less stressful compared to the working) mode at the launch site, and it is much easier to ensure high reliability and timely monitoring in ground systems. In the article, a model of an upgraded cosmonaut landing and evacuation unit for the Soyuz-5 launch vehicle with the PTK Orel, which is designed on the basis of the existing CLEU (unit 11T187) for the Zenit launch vehicle at the Baikonur Cosmodrome, is designed and analyzed for strength. English version of the article is available at URL: https://panor.ru/articles/structural-mechanics-of-the-supporting-structure-of-the-astronaut-landing-and-evacuation-unit/78209.html
The influence of the value of the front angle and the angle of inclination of the cutting edge on the radial force when threading with taps
Authors:   Bauman Moscow State Technical University, Moscow, Ivanina I.V.,
Published: February 2022

The purpose and normalization of the accuracy of the geometric parameters of the cutting part of the tool is directly related to the indicators of functional and parametric reliability of taps. The comparison of the taps test results showed that reducing the range of scatter of geometric parameters of the tool of the cutting part of taps makes the threading process more stable (leads to a significant reduction in the resistance dispersion, to a decrease in the number of breakdowns, and a decrease in the coefficients of variation of resistance and wear) and reduces the breakdown of the flank of the thread being cut. In this paper, the dependences of the change in the magnitude of the radial force on the elementary cutting profiles of the tap on the error of the spacing angle between the cutting teeth due to angular displacements of the main cutting blade owing to the presence of the front angle and the angle of inclination of the cutting edge are obtained. The obtained patterns of changes in the radial force on the cutting teeth of the tap can be used when considering alternative options for assigning the angle λ based on the criterion of minimum (limitation) of cutting forces during processing. A change in the front angle in the range of known recommended values does not significantly affect the nature of the change and the amount of radial force on the cutting teeth of the tap, as well as does not affect the one-sided direction of the radial force vector, characteristic of taps with a uniform spacing angle. The error of the spacing angle between the cutting teeth of the tap, due to the presence of the angle of inclination of the cutting edge λ, leads to an increase in the radial force and a change in the nature of the load on the cutting teeth of the tool. The obtained patterns of changes in the radial force on the cutting teeth of the tap can be used when considering alternative options for assigning the angle λ based on the criterion of minimum (limitation) of cutting forces during processing.
Programming of control devices in C++
Authors:   Bauman Moscow State Technical University, Moscow, Yudachev S.S. , Sitnikov S.S. ,   Bauman Moscow State Technical University, Moscow, Monakhov P.A. ,   Bauman Moscow State Technical University, Mosc, Gordienko N.A. ,   Bauman Moscow State Technical University, Moscow
Published: February 2022

Accidents on oil and gas pipelines, accompanied by fluid leakage, cause economic and environmental damage. The task of the chief mechanics is to prevent accidents and monitor the operation of the equipment. A prerequisite for the timely accidents control in the oil and gas industry and the elimination of their consequences is the prompt determination of the location of leaks and tie-ins. To solve this problem, a large number of methods that differ in sensitivity, external immunity, speed and accuracy of determining the coordinates of leak sites and tie-ins have been developed and applied. Frequency characteristics are used to solve a number of typical problems of research and processing of equipment failure signals. A variant of the implementation of the fast Fourier transform in the C++ programming language and the coding language of the Verilog programmable logic integrated circuit is proposed. When performing the work, Visual Studio software from Microsoft and Quartus from Intel (Altera) are used. A comparison of the results of processing several signals in the above programs is presented. When implemented in a programmable logic integrated circuit, the work is performed at the model level using the built-in intellectual property core (IP function), while in C++ the algorithm is implemented manually, which increases the accuracy of its execution. The practical significance of the work is the study and solution of the simplest tasks in the development of modern electronic devices, including for monitoring the operation of equipment in the oil and gas industry of rapid response, in the Verilog hardware description language and comparison with an alternative model in the programming language. Excerpts of the codes of both programs are presented. The FFT is illustrated (step by step), as well as the signals before and after processing are presented. This work can be used to teach students of higher educational institutions in the field of development, debugging and coding of electronic and radio-electronic devices, as well as in the creation and design of real devices in production. Familiarization and study of this programming language are conducted within the walls of one of the leading engineering universities of the Russian Federation, the Bauman Moscow State Technical University.
Los griegos y lo irracional. Eric R. Dodds. Madrid: Alianza, 2019
Authors: Acevedo Carvajal Juan Manuel
Published: February 2022

En su famoso estudio Los griegos y lo irracional, Eric R. Dodds asume el análisis de la mentalidad del hombre griego, su influencia innegable en el desarrollo de las sociedades modernas y las diferencias entre esa mentalidad y la que con base en ella se ha consolidado como característica del hombre occidental. La tesis fundamental del estudio es cuestionar la creencia general acerca del pensamiento griego como un pensamiento básicamente racional acerca de todos los aspectos de la vida, el comportamiento humano y la concepción del mundo. Dodds encuentra que existe un componente “irracional” en el modo griego de ver el mundo, cercano a la religión y a la superstición.
Crecimiento de heteroestructuras de GaSb/GalnAsSb/GaSb por la técnica de Epitaxia en Fase Líquida
Authors: Gómez José Fernando , Cardona Ana Patricia , De-Los-Ríos Marianela , Tirado-Trujillo Liliana , Ariza-Calderón Hernando
Published: February 2022

En este trabajo se muestran algunos resultados preliminares del proceso de crecimiento por la técnica de Epitaxia en Fase Líquida (EFL) de la heteroestructura GaSb/GaInAsSb/GaSb. Se describe el proceso de fabricación de la heteroestructura así como también se muestran los resultado obtenidos de su caracterización por Difracción de Rayos X (DRX) y Fotoluminiscencia (FL) los cuales evidencian el crecimiento epitaxial de la heteroestructura.
Carácter de las prácticas pedagógicas de los estudiantes del ciclo complementario de la Normal Superior del Quindío en el proyecto escuela incluyente
Authors: Bulla-De-Torres Marleny
Published: February 2022

Las Escuelas Normales Superiores, instituciones acreditadas para brindar la formación inicial del docente de Preescolar y Básica Primaria, están en el deber de asumir el reto de la pertinencia y la calidad; en este sentido, la práctica pedagógica es la esencia que vivifica y promueve un estilo propio en el desempeño del normalista, implicándolo en su quehacer educativo.

La investigación: CARÁCTER DE LAS PRÁCTICAS PEDAGÓGICAS DE LOS ESTUDIANTES DEL CICLO COMPLEMENTARIO DE LA NORMAL SUPERIOR DEL QUINDÍO, EN EL PROYECTO ESCUELA INCLUYENTE, es un estudio cualitativo, de enfoque etnográfico – crítico; radicó en hacer una lectura de las prácticas pedagógicas que realizan los/as normalistas superiores, en las comunidades donde se lleva a cabo el proceso de atención educativa a poblaciones en situación de vulnerabilidad social; para develar lo que significa la experiencia y precisar el perfil pedagógico de los estudiantes en sus prácticas, y al mismo tiempo construir el sentido de ser maestro en las actuales circunstancias del devenir histórico, político y social de la región. 

 Indagó el proceso pedagógico de los maestros en formación inicial, con la infancia, la adolescencia, la juventud, la familia y la comunidad; beneficiarios potenciales del proyecto Escuela Incluyente; con el propósito de comprender las  relaciones pedagógicas en los escenarios comunitarios, bajo el marco de la inclusión educativa y social, como una práctica emergente, a partir de las necesidades identificadas en estas poblaciones; atendidas por la Institución formadora de formadores en su programa de proyección social.
Composición, estacionalidad y hábitat de los peces de la quebrada Cristales, afluente del Río la Vieja, Alto Cauca, Colombia.
Authors: García-Alzate Roberto J. , García-Alzate Carlos A. , Botero-Botero Álvaro
Published: February 2022

Se estudió la composición, estacionalidad y hábitat de los peces de la Quebrada Cristales, afluente terciario del río La Vieja en el Alto Cauca, Colombia, desde junio 2004 hasta enero, 2005. Se capturaron 16 especies de cuatro órdenes y cinco familias; las capturas se efectuaron con métodos estándares en 14 estaciones de muestreo a lo largo de la quebrada. Brycon henni fue constante en la quebrada para ambos periodos climáticos y en las zona baja de la quebrada. Poecilia caucana es la especie con más alto porcentaje de ocurrencia para ambos periodos y la única especie constante para la zona alta. Apteronotus  sp., Argopleura magdalenensis, Bryconamericus caucanus, Chaetostoma fischeri, Characidium caucanum, Imparfinis nemacheir, Lasiancistrus caucanus, Rhamdia quelen, y Roeboides dayi fueron especies accidentales y solo se capturaron a medida en cercanías a la desembocadura, observándose únicamente para la zona media y baja de la quebrada. Se evaluaron características fisicoquímicas y del hábitat. Muchas especies se encontraron asociadas a microhabitats con abundante vegetación ribereña y macrófitas acuáticas.
Presentación de un caso de queratitis por Acanthamoeba, su aislamiento clínico y tratamiento exitoso con antisépticos en el departamento del Quindío, y revisión de la literatura
Authors: Castaño-Osorio Jhon Carlos
Published: February 2022

La queratitis por Acanthamoeba es una entidad clínica cuya incidencia se ha venido incrementando recientemente, debido al uso de lentes de contacto blandos. En el presente artículo se presenta un caso clínico de una joven usuaria de este tipo de lentes quien desarrolló un cuadro de queratitis que se diagnosticó inicialmente como una queratitis herpética. Al no responder a tratamiento con trivirina (trifluridina, viromidin 1%) y aciclovir (3%)   se consideró el diagnóstico de queratitis micótica, aunque sin respuesta al tratamiento con anfotericina B. El diagnóstico definitivo de queratitis por Acanthamoeba se logró establecer por observación microscópica directa de de trofozoítos de Acanthamoeba spp en un raspado corneano. La presencia de este microorganismo se confirmó mediante la obtención de abundantes  trofozoítos móviles en un cultivo  de células Vero. Luego de instaurar el tratamiento con  digluconato de clorohexidina  y  polihexametil binguadina se logró una rápida  mejoría clínica. Este hallazgo se constituye en el primer caso de queratitis por Acanthamoeba spp. en el Departamento del Quindío y en el primer reporte de tratamiento médico exitoso con estos dos productos. Es de anotar que en presente caso el diagnóstico etiológico se dio a los dos meses de inicio de la sintomatología) debido en parte a que la queratitis por Acanthamoeba spp. puede simular otras entidades infecciosas de carácter viral como el herpes o micótico producidas por Candida, Aspergillus y Fusarium, y que por la poca frecuencia de la entidad, los oftalmólogos no piensan en esta posibilidad diagnóstica.
DIAGNÓSTICO DE LA GENERACION Y MANEJO DE RESIDUOS SÓLIDOS EN LA UNIVERSIDAD DEL QUINDÍO
Authors: Nieto Olga Alicia , Nieto Margarita Marcela , Lozano Carlos Mario , Jiménez Luis Fernando
Published: February 2022

La generación de residuos sólidos es uno de los principales problemas de salud y ambiente, que evidencia el uso que hacemos de este planeta y la huella ecológica que dejamos en él.

En Colombia, se estima que a nivel nacional se generan aproximadamente 30.886 toneladas diarias, el departamento de Quindío 531 ton/día de residuos sólidos, de  los cuales Armenia representa el 37% (196 ton/día).

La generación de residuos sólidos en la Universidad del Quindío es de 210 Kg/día. De los cuales  16,8 kg (8%) son biodegradables u orgánicos, el 3,4% (7,2 kg) son reciclables (papel), el mayor volumen son ordinarios ( incluye inertes), 182 Kg que equivalen al 86,66 %. Peligrosos (biosanitarios) son  3,8 Kg (1,9 %) Es decir se generan entre 63 a 76 toneladas de residuos sólidos al año.

La generación per cápita, es de 23,33 gr/día. En un año es de 8 a 9,5 kg per cápita. Se calculó identificando la población universitaria en 8.000 personas. 

El objetivo de este proyecto fue elaborar el diagnóstico de la generación y manejo de residuos sólidos en la Universidad del Quindío, con el propósito de diseñar y proponer en funcionamiento un Sistema de Gestión Ambiental.

Simultáneamente con este proceso, se puso en funcionamiento el Sistema de Gestión Ambiental en la Universidad del Quindío, con participación de diversos estamentos y dependencias de la Universidad.
POLA KONSUMSI GENERASI MILENIAL DALAM BELANJA ONLINE (E-COMMERCE) PADA MASA PANDEMIC COVID 19
Authors: Farhani Hilma , Raihan Raihan , Sekarini Ratih Ayu
Published: February 2022

Tahun 2020 hingga waktu ini tahun 2021 artinya masa sejarah bagi seluruh global, hal ini didasari seluruh dunia sedang mengalami masa pandemic covid 19. Pandemi covid 19 yg terjadi secara global tentu saja berdampak di berbagai sektor salah  satunya sektor ekonomi. Penyakit Covid 19 sudah menyebabkan economi shock baik secara perorangan, rumah tangga, perusahaan mikro & makro mungil, menengah juga besar , tidak hanya pada Negara Indonesia saja namun bahkan mensugesti ekonomi negara lain. Hal ini berdampak mengubah pola kegiatan belanja yang umumnya warga  membeli kebutuhan pribadi ke toko atau secara offline buat membeli kebutuhan sehari-hari menjadi berbelanja secara online, pola konsumsi waktu ini mulai merubah dari membeli barang menggunakan melihat atau mencoba secara eksklusif di toko/daerah menjadi membeli produk hanya sesuai gosip yang cukup tanpa mencoba/merasakan produk tersebut. Tujuan penelitian ini memberikan informasi terjadi perubahan pola konsumsi pada sikap konsumen pada waktu pandemi covid-19 terutama di generasi milenial. Metode penelitian yg dipergunakan adalah metode kuantitatif. akibat penelitian menunjukkan pola konsumsi pada indicator mencari informasi barang atau jasa secara online. sesuai hasil penelitian disumplakn bawah terdapat perubahan di pola konsumsi generasi milinenal di masa pandemi covid-19 di indicator mencari berita, menggunakan dan  membeli pada jasa e-commers.
ANALISIS PENGEMBANGAN KARIR DAN KOMITMEN ORGANISASI TERHADAP KINERJA KARYAWAN
Authors: Hardjokusumo Heri Sukamto , Chusnah Chusnah , Devi Febriyanti Monica
Published: February 2022

This study aims to determine the effect of Career Development and Organizational Commitment on Employee Performance at PT. Bank Tabungan Negara (PERSERO) Tbk. Bekasi Sharia Branch Office. This research was conducted on employees of Bank BTN Syariah Bekasi, the sample in this study amounted to 67 people using a saturated sampling technique (non-probability sampling). The data analysis methods used in this research are validity test, reliability test, classical assumption test, regression analysis, correlation analysis, coefficient of determination, t test and f test using SPSS 25 program. Based on the results of data analysis and hypothesis testing that has been done, it shows that partially Career Development variable (X1) has a positive and significant effect on Employee Performance (Y) with a sig value of 0,000 < 0,05 and t count 4,748 > t table 1,999. While the variable Organizational Commitment (X2) has a positive and significant effect on Employee Performance (Y) with a sig value of 0,000 < 0,05 and t count 4,520 > t table 1,999. The results of the coefficient of determination test (R2) of 0,553, this indicates that the variables of Career Development and Organizational Commitment have an influence on Employee Performance of 55,3% while the remaining 44,7% is influenced by other variables not used in this study.
KARAKTERISTIK PETANI KELAPA SAWIT DI KABUPATEN LABUHAN BATU UTARA
Authors: Nasution Myrna Pratiwi
Published: February 2022

Penelitian ini bertujuan untuk mengidentifikasi karakteristik petani kelapa sawit yang terdapat di Kabupaten Labuhan Batu Utara. Penelitian ini dianalisis dengan bantuan 200 responden. Metode yang digunakan dalam penelitian ini adalah analisis deskriptif. Hasil penelitian menunjukkan bahwa sebanyak 32 persen petani berada pada rentang usia 51-55 tahun, 36 persen memiliki pendidikan pada jenjang Sekolah Dasar (SD), 46 persen petani memiliki luas lahan sebesar 1-5 Ha, 33 persen petani telah berusahatani selama 0-5 tahun, 78 persen memiliki tanggungan sebanyak 1-5 orang dan seluruh petani memiliki lahan sendiri untuk berusahatani.
KERAGAMAN KUPU-KUPU (Lepidoptera) DI TANGKAHAN KABUPATEN LANGKAT SUMATERA UTARA
Authors: Irni Julaili
Published: February 2022

Kupu-kupu merupakan salah satu serangga cantik di dunia yang dijadikan sebagai lambang keindahan karena memiliki warna dan corak sayap yang sangat menarik. Tujuan penelitian ini yaitu untuk mengetahui keragaman kupu-kupu (lepidoptera) serta mengidentifikasi kupu-kupu yang berhasil didokumentasikan dan dilaksanakan di Tangkahan Kabupaten Langkat, Sumatera Utara pada bulan Desember 2013 – Januari 2014. Penelitian ini menggunakan metode deskriptif kualitatif dan metode jelajah untuk mendapatkan sampel. Penelitian ini menggunakan 18 titik pengamatan pada hutan kering sekunder  yang dimulai dari titik 1 di pondok dan berakhir dititik 18 yaitu pantai kupu-kupu serta parameter pengamatan yaitu suhu, kelembapan udara dan intensitas cahaya. Hasil yang diperoleh dari titik pengamatn tersebut ditemukan 38 spesies yang berhasil didokumentasi dan terdiri dari 5 famili yaitu Papilionidae, Nymphalidae, Riodinidae, Pieridae dan Lcyaenidae. Family Nymphalidae memiliki spesies terbanyak yaitu 16 spesies dan paling sedikit dari Family Riodinidae sebanyak 3 spesies. Intensitas cahaya yang terdapat di dalam hutan yaitu 1264 Lux sedangkan di Pantai Kupu-kupu 1850 Lux. Suhu dan kelembaban udara di hutan yaitu 98 % dan 25ºC sedangkan di Pantai Kupu-kupu yaitu 60 %dan 35 ºC.
RIMBO LARANGAN KEARIFAN LOKAL MASYARAKAT MINANG KABAU UNTUK MENJAGA KELESTARIAN SUMBER DAYA ALAM DAN LINGKUNGAN
Authors: Afrianti Suratni
Published: February 2022

Kehidupan masyarakat minang kabau Sehari- hari banyak bergantung kepada alam, alam sebagai sumber penghidupan juga sebagai sumber ilmu pengetahuan sehingga ada pepapatah minang kabau yang mengatakan bahwasanya “Alam Takambang jadi Guru” dalam Bahasa Indonesia di baca Alam terkembang Jadi Guru, di minang kabau kelestrian alam dan lingkungan terutama hutan sangat dijaga dengan baik hal ini dilakukan sejak zaman nenek moyang dahulunya, sehingga ada salah satu kearifan lokal masyarakat minang kabau yang dinamakan Rimbo Larangan, Rimbo Larangan yaitu melindungi rimbo atau dalam Bahasa Indonesia disebut Rimba/hutan. Tujuan tulisan ini adalah untuk melihat Tata cara mengakan kearifan lokal rimbo larangan yang ada di sumatera barat, Bentuk-Bentuk Larangan Yang Dibuat Untuk Rimbo Larangan, Factor Factor Yang Mempengaruhi Bertahannya Kearifan Lokal Rimbo Larangan, metode yang digunakan untuk membuat tulisan ini adalah dengan cara Review jurnal, buku dan tulisan ilmiah lainnya yang berkaitan tentang Rimbo Larangan Kearifan Lokal Masyarakat Minang Kabau Untuk Pelestarian Sumber Daya Alam.
EFEKTIVITAS EKSTRAK BABADOTAN (Ageratum conyzoides L) DALAM PENGENDALIAN GULMA PADA PERKEBUNAN KELAPA SAWIT
Authors: Anggraini Sari
Published: February 2022

Penelitian ini bertujuan untuk mengetahui efektivitas ekstrak babadotan (Ageratum conyzoides L.) dalam pengendalian gulma pada tanaman kelapa sawit dan untuk mengetahui kosentrasi ekstrak babadotan (Ageratum conyzoides L.) yang paling efektif dalam pengendalian gulma pada tanaman kelapa sawit. Metode penelitian menggunakan Rancangan Acak Kelompok non Faktorial dengan menggunakan uji ANAVA terdiri dari 11 variasi konsentrasi yaitu kontrol, 10 %, 20 %, 30 %, 40 %, 50 %, 60 %, 70 %, 80 %, 90 %, 100 %. Hasil vegetasi menunjukkan bahwa gulma yang di temukan terdapat 10 jenis spesies gulma yang terdiri dari Ottochloa nodusa, Boeraria alata, Ageratum conyzoides, Asystasia intrusa, Setaria barbata, Melastoma malabathricum, Diplazium esculentum, Mimosa pudica, Licopodium seanum, Cyclosorus aridus. Hasil pengamatan menunjukkan bahwa aplikasi pemberian ekstrak babadotan tidak memperlihatkan ciri fisik keracunan pada gulma di perkebunan kelapa sawit.