bluuebunny/crossref_metadata_2025 huggingface dataset:
Tingkat pengetahuan dan perilaku terjadinya trauma gigi pada siswa asrama Pusat Pendidikan dan Latihan Olahraga Pelajar
The level of knowledge and behavior of the occurrence dental trauma to Education And Training Student Sports (PPLP) boarding students
Authors: Putri Nurhayani , Yandi Satria
Published: August 2022

ABSTRAKPendahuluan: Trauma gigi merupakan suatu masalah yang sering terjadi pada usia muda ketika pertumbuhan dan perkembangan terjadi dengan sangat pesat. Cabang olahraga seperti bola basket, sepak bola, hoki, seni bela diri dan tinju memiliki risiko yang sangat tinggi untuk terjadinya trauma gigi. Tujuan penelitian dalah mengetahui pengetahuan dan perilaku  siswa  terjadinya trauma gigi pada siswa asrama Pusat Pendidikan dan Latihan Olahraga Pelajar (PPLP) . Metode: Jenis penelitian observational descriptive dengan pendekatan cross sectional. Populasi penelitian adalah siswa asrama. Teknik pengambilan sampel menggunakan metode total sampling dengan penentuan jumlah sampel menggunakan rumus slovin diperoleh sampel sebanyak 71 siswa. Lokasi penelitian di Asrama PPLP Kota Padang. Analisis data dilakukan dengan menggunakan distribusi frekuensi. Hasil: Siswa yang memiliki pengetahuan kurang mempunyai persentase terbesar yaitu sebanyak 65 orang (91,5%) dan siswa yang memiliki perilaku kurang mempunyai persentase terbesar yaitu sebanyak yaitu 44 orang (62%). Simpulan: Siswa asrama memiliki pengetahuan dan perilaku yang kurang terhadap terjadinya trauma gigi.Kata kunci: trauma gigi; pengetahuan; perilakuABSTRACTIntroduction: Dental trauma was a problem that often occurs in teenager when growth and development occur rapidly. Sports such as basketball, soccer, hockey, martial arts, and boxing have a high risk of dental trauma. This study aimed to determine the knowledge and behavior on dental trauma of Education And Training Student Sports (PPLP) boarding students in Padang city. Methods: The population of this study were students of PPLP Padang City. The type of study design was descriptive observational with cross sectional approach. The sampling technique used a total sampling method, with a number of participants (n = 71). The research held in PPLP dormitory of Padang city, from May until December 2018. Result: Most of the students had less knowledge, namely 65 people (91.5%) and most students had less behavior, namely 44 people (62%). Conclusion: PPLP boarding students had less knowledge and behavior toward dental trauma.Keywords: dental trauma; knowledge; behavior
The Role of Malay Culture in Maintaining the Neutrality of the Civil Servants: A Case Study of Local Election in Riau, Indonesia
Authors: Ardiansyah Ardiansyah , Rafi M.
Published: August 2022

Local election contestation has caused various problems of violating the neutrality of the bureaucracy in the public domain. Multiple types of regulations have proved unable to comprehensively maintain the principle of neutrality. Thus, it is necessary to instil a bureaucratic character supported by local values so that the Civil Servants can carry out their primary duties and functions optimally. This study aims to explain the role of Malay culture in maintaining the neutrality of the bureaucracy in the local election in Riau Province. This study uses a qualitative research method that explores various phenomena of violations of the neutrality of the bureaucracy in the 2018 Riau Governor Election. Data analysis was carried out through the Nvivo 12 Plus software sourced from the online news media content and interviews with Riau Province figures. The study found several causes influencing non-neutral Civil Servants in the Riau Governor election. They are dominated by personal closeness (21.74%), primordial relationship factors (20.29%), society passivity (18.84%), weak law enforcement (11.59%), regulatory ambiguity (11.59%), lack of understanding of regulations (8.70%), and job ambition (7.25%). Then to minimize the various factors of violations that occur, Malay cultural values can be an additional guideline in dealing with various dynamics that occur in political contestation in Riau Province. Every civil servant at the local level must re-recognize and understand the important principles of Malay culture, namely principles of justice, courage, shame, hard work, self-sacrifice, and honesty.
Border Development Model on the Human Development Aspects for Sustainable Community
Authors: Risal Semuel , Irawanto Irawanto , Hergianasari Putri , Rahma Anita Ade , Pramudiana Ika Devy
Published: August 2022

The Indonesian government has implemented a border development policy. Still, it has not been able to answer the complexity of the problems that occur in border areas, especially in North Kalimantan. The development of border areas is closely related to the mission of national development, defence and state security to improve the Welfare of the people in the border areas, especially to ensure the integrity and sovereignty of the state. However, the condition of border communities in North Kalimantan is increasingly marginalized, where poverty and regional isolation trigger the high demands of local people to become border crossers to Malaysia. This study will examine the factors causing the economic backwardness of border communities in North Kalimantan, poverty and isolation of border communities, and security issues at the border. The results show that the border area needs to be closely monitored because it is a security-prone area. This makes the border development paradigm in Kaltara prioritize a security approach rather than Welfare. This causes the border areas in North Kalimantan to be scarcely touched by the dynamics of development. Therefore, border development needs to be placed in a people centre of development-oriented to people's economic development for sustainable communities through accelerating economic growth, improving the quality of human resources, and strengthening institutional capacity for border area development. Thus, border communities can enjoy prosperity by protecting and maintaining state sovereignty at the border.
El microcrédito en la zona oriente de Tlalnepantla
Authors:   , Ayala Cerritos María Teresa
Published: August 2022

Esta tesis se integra por cinco capítulos, el capítulo uno define los conceptos que apoyan el análisis del presente estudio en donde la formación de las colonias populares se caracteriza por el acceso informal al suelo, por la autoconstrucción de la vivienda y del entorno (barrio) como un proceso que se extiende en el tiempo durante muchas décadas hasta lograr una vivienda y un entorno urbano consolidado. Es una alternativa de solución habitacional para la mayoría de la población empobrecida de las ciudades. En estos procesos, la mujer tiene un papel protagonista ya que enfrenta la construcción de su vivienda, la dotación de equipamiento y servicios, y en general, la participación comunitaria para alcanzar una mejora a sus condiciones de vida. Además, la mujer también se encarga de hacerse de recursos económicos y esto lo hace muchas veces a través de la creación de micronegocios que instala en la vivienda los cuales son la base para buscar un microcrédito. El capítulo dos trata sobre la economía social y las finanzas solidarias, se explica que en el desarrollo de la Economía Social surgen las finanzas solidarias, las cuales son un instrumento especializado que apoya actividades económicas de familias de escasos recursos, como las que se perciben en los barrios populares. Se describe que los habitantes de estos territorios recurren a formas de financiamiento formal o informal. En este sentido, las políticas públicas en materia del microcrédito han cobrado importancia para el gobierno mexicano a partir del inicio del presente siglo, por lo cual, se hace un breve recuento del microcrédito en el Sistema Financiero Mexicano (SFM), de los instrumentos y de los actores. Se presentan las diferentes formas que adquieren las finanzas solidarias y las instituciones que manejan esta modalidad, de igual forma, de los diferentes impulsos gubernamentales. El capítulo tres describe el proceso de desarrollo urbano de la zona de estudio, se inicia con la formación del Pueblo de San Juan Ixhuatepec que es la base para la conformación de la zona oriente de Tlalnepantla. Se presenta el momento contemporáneo, donde se expone la dinámica demográfica, las características educativas de la población, la conformación de los hogares, los servicios de salud, la dinámica habitacional y económica. Al final de este apartado, se presentan los testimonios obtenidos de las entrevistadas en cuando a la descripción de la evolución de su vivienda y de la colonia. En los últimos dos capítulos se presentan los resultados obtenidos en el trabajo de campo, documentando la incorporación de la mujer en una actividad productiva a través de un microcrédito, la evolución de su negocio, y la perspectiva de ellas sobre las instituciones financieras. Al final, se presentan unas conclusiones sobre la investigación realizada.
Elementos para el diseño de una política alimentaria en el sur rural de la Ciudad de México
Authors:   , Roque Escartín Itzé Magdalena
Published: August 2022

El objetivo general de la tesis es analizar los procesos de producción de alimentos en algunas alcaldías rurales de la ciudad de México para ubicar rupturas en los eslabonamientos del sistema alimentario de la región rural de la ciudad, que permitan comprender las problemáticas padecidas por los productores y la incidencia que tienen los programas sociales alimentarios entre los agricultores y los consumidores más vulnerables. Uno de los objetivos particulares es contribuir al fortalecimiento de la seguridad alimentaria, así como a la reconstrucción de una soberanía alimentaria local que se incluya en el diseño de la política pública. El estudio se divide en cuatro capítulos. El primero describe y analiza conceptos clave para la construcción una política alimentaria y cómo estos se pueden entender en el contexto de algunas alcaldías rurales de la zona sur de la CDMX. El segundo capítulo, desarrolla la construcción histórica de la política alimentaria a nivel federal y cómo esta se ha aplicado a la ciudad de México, en particular, en algunas alcaldías rurales de la zona sur de la CDMX. El tercer capítulo, analiza las cinco entrevistas a productores rurales y a una comerciante de productos agroecológicos y lleva a cabo el cruce transversal de la información para detectar problemáticas y fortalezas en los sistemas alimentarios locales. El último capítulo, propone una síntesis de los problemas alimentarios en las alcaldías rurales del sur de la capital identificados a lo largo de la investigación, genera un diagnóstico, y con ello, propuestas que contribuyan a la construcción de la política alimentaria en el sureste de la capital.
Steroidoterapia donosowa w leczeniu ostrego zapalenia zatok przynosowych
Authors: Rapiejko Piotr
Published: August 2022

Ostre zapalenie błony śluzowej nosa i zatok przynosowych to bardzo częste schorzenie, w większości przypadków wywołane przez infekcję wirusową. Jedynie ok. 0,5–2% wirusowych postaci choroby jest powikłanych zakażeniem bakteryjnym. Ze względu na mechanizmy zapalne leżące u podstaw patofizjologicznych zapalenia błony śluzowej nosa i zatok przynosowych w ich leczeniu od dziesięcioleci stosuje się donosowe glikokortykosteroidy. Rekomendacje towarzystw naukowych oraz grup ekspertów zalecają stosowanie donosowych glikokortykosteroidów w szerokim zakresie wskazań (nie tylko w alergicznym nieżycie nosa i zapaleniu zatok z polipami nosa).
Thermal processes in thin wires by interaction with microwave radiation
Authors: Kokodii N. G. , Shaposhnikova A. V. , Pogorelov S. V.
Published: August 2022

The effect of an anomalously large absorption of electromagnetic radiation in very thin conducting fibers was investigated. Efficiency factor of absorption can reach several hundred for a fiber with a diameter of several micrometers in the centimeter wavelength range. The effect can be used to transfer the energy of electromagnetic radiation to thin fibers without focusing radiation.
Temperature dependencies of thin-wire platinum bolometer of high power laser radiation
Authors: Pogorelov Stanislav Victorovich , Balkashin V.P. , Safronov B.V. , Krasovskiy I.V.
Published: August 2022

The resistance of platinum filament on heating to different temperatures have been measured. Measurements showed platinum wire resistivity matching to tabulated values, and therefore can be used to obtain the temperature dependence of conductors used in bolometric measurers of radiation.The results obtained make it possible to createabsolute bolometricmeasurer of continuous power and pulse energy of laser radiation.
Anisotropic Behaviour and Elastic Moduli of Average Isotropic and Anisotropic Elastic Media
Authors: Tleukenov S. , Bobeev A. , Sabitova D.
Published: August 2022

Using matricant method elastic moduli of occasionally heterogeneous isotropic and anisotropic elastic media were received. Anisotropic behaviour and conditions for change in anisotropy of media associated with averaging of one-dimensional periodic structures was determined.
Microstructures and hardness of as-cast {C, Ta or Ti or Hf of Zr}-containing Cr-rich Niobium-based alloys candidate for uses at elevated temperatures
Authors: Berthod Patrice , Léglise Mélissa , Medjahdi Ghouti
Published: August 2022

Four alloys based on niobium and containing about 33wt.%Cr, 0.4wt.C and, in atomic content equivalent to the carbon one, Ta, Ti, Hf or Zr, were elaborated by classical foundry under inert atmosphere. Their as-cast microstructures were characterized by X-ray diffraction, electron microscopy, energy dispersion spectrometry and while their room temperature hardness was specified by Vickers indentation. The microstructures are in the four cases composed of a dendritic Nb-based solid solution and of an interdendritic NbCr2 Laves phase. Despite the MC-former behavior of Ta, Ti, Hf and Zr usually observed in nickel or cobalt-based alloys, none of the four alloys contain MC carbides. Carbon is essentially visible as graphite flakes. These alloys are brittle at room temperature and hard to machine. Indentation shows that the Vickers hardness is very high, close to 1000HV10kg. Indentation lead to crack propagation through the niobium phase and the Laves areas. Obviously no niobium-based alloys microstructurally similar to high performance MC-strengthened nickel-based and cobalt-based can be expected. However the high temperature mechanical and chemical properties of these alloys remain to be investigated.
Equilibrium, thermodynamics and kinetic models in the adsorption of Red 40 on corn gourd
Authors: Figueroa Danilo , Moreno Anderson , Hormaza Angelina
Published: August 2022

Adsorption is a widely used method for the treatment of dissolved contaminants. Various agro-industrial wastes have been explored as potential adsorbents, showing high efficiency in dye removal. Each adsorbate-adsorbent pair needs kinetic, and equilibrium models to scale up this process. In this work, the equilibrium, kinetics and thermodynamics of the corn Tuza-Red 40 system were evaluated under batch system at ph = 2.0 at temperatures of 25, 40, and 55 °C. The Langmuir, Freundlich and Temkin models were selected for the isotherm representation, while the Lagergren, Ho, and Elovich equations for the kinetics of the process. The Freundlich model presented the best fit to the isotherms, the adsorption kinetics was best described by the Ho equation, and the values for Gibbs free energy and entropy indicated the spontaneity and feasibility of the process.
Thermodynamic study on lead leaching from sodium citrate
Authors: Villa Lina Constanza , Agudelo Wilmer Saldarriaga , Rojas Néstor Ricardo
Published: August 2022

Lead-acid batteries account for 60% of the world’s electrical energy storage batteries. About 50% of global lead consumption comes from recycled and reused materials. Currently, pyrometallurgical methods account for more than 90% of lead recovery technology; however, these processes are criticized due to sulfur dioxide emissions from the decomposition of lead sulfate at elevated temperatures, in addition to particulate emissions. Lead recovery by recycling batteries byhydrometallurgical processes has been investigated as an alternative to pyrometallurgical processes. In the present work, a thermodynamic analysis of lead leaching with sodium citrate was performed. The thermodynamic analysis was based on the study of three stability diagrams constructed with Medusa® software. Leaching tests were carried out to get to know the system, corroborate the thermodynamic analysis performed, and study the behavior of the system. The results obtained show that it is possible to extract 100% lead with a leaching agent concentration of 0.25 M, a 1:1 solid-liquidratio, and 25 ℃.
Experiment and characterization of dynamic thermal storage characteristics of porous media thermal storage system
Authors: Yan Ke , Cheng Leming , Zhang Weiguo , Shi Zhengzhan , Qiu Kunzan
Published: August 2022

The aim is to understand the thermal storage characteristics of porous media thermal storage materials under thermal dynamic conditions, and obtain the dynamic thermal storage characteristics parameters of thermal storage materials. In the 120 kW thermal dynamic thermal storage system of porous media, we studied the dynamic thermal storage characteristics of honeycomb porous ceramic thermal storage materials with different pore diameters (2.9, 4, 5.5 mm) and lengths (100–400 mm) under different hot flue gas conditions include thermal storage rate, thermal storage efficiency and storage. The results show that the relationship between the heat storage rate and time is parabolic, and the heat storage efficiency gradually decreases with the heat storage time. At the same time, the regenerative rate and unit regenerative resistance loss increase with the increase of specific surface area or the decrease of pore diameter of regenerator, and the regenerative efficiency increases with the increase of regenerator length. According to the experimental research and analysis, the dynamic heat storage characteristics of porous regenerator can be characterized by heat storage rate, heat storage efficiency and unit heat storage resistance loss.
Influence of Na2CO3 on combustion performance of civil clean coke
Authors: Wang Bingning , Liu Shoujun , Yang Song , Yan Xudong , Chen Liangyu , Li Jin
Published: August 2022

Civil clean coke is a low-pollutanted civil clean fuel made of coal and multi-functional composite additives by high-temperature carbonization, which is of positive significance to solve the problem of air pollution caused by civil bulk combustion. However, problems such as high ignition temperature and poor combustion performance exist in the use of civil clean coke in the early stage. In this paper, Lvliang fat coal is taken as the research object. Coke samples are prepared by adding different additives and high-temperature carbonization. The influence of Na2CO3 on the combustion performance of civil clean coke is analyzed by TG-DTG, BET, thermodynamics kinetics and other methods. The results show that the civil clean coke prepared by high temperature dry distillation with 1.0% Na2CO3 added, the ignition temperature by impregnation method is 53 K lower than that of coke without additives; after adding Na2CO3, the TG and DTG curves of coke shifted significantly to the left, the average combustion rate increased from 0.38 mg/min to 0.75 mg/min, and the comprehensive combustion index increased from 2.01 × 10-10 mg2 /(min2 ·K3 ) to 11.14 × 10-10 mg2 /(min2 ·K3 ); after adding Na2CO3, the specific surface area of coke is significantly increased and the pore structure is more developed, which promotes the oxygen transfer in the combustion process and significantly reduces the apparent activation energy of the combustion system. The apparent activation energy in the low temperature zone is reduced from 454.28 kJ/mol to 306.85 kJ/mol, and the apparent activation energy in the high temperature zone is reduced from 557.36 kJ/mol to 95.36 kJ/mol. The combustion performance of civil clean coke is improved.
Effects of atmosphere and post catalyst on pyrolysis characteristics of Pingshuo bituminous coal
Authors: Li Huaixiang , Fang Mengxiang , Lv Tong , Yan Jiqing , Xia Zhixiang , Cen Jianmeng
Published: August 2022

In order to lighten the tar from coal pyrolysis, the effects of N2, CH4 and H2 atmosphere on the pyrolysis characteristics of Pingshuo bituminous coal were investigated in a small fluidized bed, and Ni-based catalyst was placed downstream of coal pyrolysis to catalyze the upgrading of tar. The results show that both H2 and CH4 atmosphere can improve the conversion of coal pyrolysis and improve the yield of pyrolysis tar. Compared with CH4 atmosphere, the post placed Ni-based catalyst in CH4 atmosphere can increase the taryield by 10%, increase the gas yield and H2 yield, and transform the pyrolysis tar to the light direction. Through simulated distillation and GC-MS analysis, compared with N2 atmosphere, CH4, H2 atmosphere and CH4 + Ni increased the relative contents of naphtha, phenol oil, naphthalene oil, wash oil and anthracene oil, and the increase showed that CH4 + Ni > H2 > CH4, while the asphalt content decreased. Compared with CH4, the relative contents of aromatic hydrocarbons and aliphatic hydrocarbons increased significantly under CH4 + Ni.
Performance analysis of ground source heat pump system under low load rate
Authors: Dong Yangfang , Zeng Zhaotian , Zhu Hui , Liu Yan , Liang Miaomeng
Published: August 2022

Taking a demonstration project of a ground source heat pump system under karst geological conditions in Guilin as the research object, based on the measured data under operating conditions in a typical season, and sorted according to the importance of influencing factors, this paper mainly studies the influence of system at very low load rate and unit load rate on the operation effect of ground source heat pump system. The research results show that the ground source heat pump system is in good operating condition when the system load rate is lower than 30.00% and the unit load rate is higher than 80.00% in typical seasons, and the proportion of power consumption of units and pumps meets the energy consumption requirements of transmission and distribution system. During the operation of the heat pump unit in July, the average refrigeration performance coefficient of the unit is 4.48, and the average refrigeration energy efficiency ratio of the system is 3.59; during the operation in January, the average heating performance coefficient of the unit is 4.26, and the average heating energy efficiency ratio of the system is 3.32; the energy saving rate in summer and winter is 30.72% and 35.93%, respectively. The energy-saving effect of the ground source heat pump system is remarkable, and it is worth popularizing and applying in Guilin.
Study on heat transfer characteristics of flow heat coupling of horizontal spiral tube heat exchanger
Authors: Yue Qingwen , Lai Xide , Chen Xiaoming , Hu Ping
Published: August 2022

In view of the complex structural characteristics and special operating environment of the horizontal spiral tube heat exchanger of the shaft sealed nuclear main pump, the numerical simulation method of flow heat coupling is used to analyze the influence of the flow and temperature changes of the fluid on the shell side on the flow field and temperature field of the heat exchanger, explore the influence rules of the inlet parameters on the flow and heat transfer characteristics of the fluid in the heat exchanger, and analyze the enhanced heat transfer performance of the heat exchanger by using the relevant heat transfer criteria. The results show that the horizontal spiral tube fluid generates centrifugal force under the influence of curvature, forming a secondary flow which is different from the straight tube flow heat transfer, and the velocity distribution is concave arc, which will enhance the heat transfer efficiency of the heat exchanger; with the increase of shell side velocity, the degree of fluid disturbance and turbulence increases, while the pressure loss does not change significantly, and the heat transfer performance of the heat exchanger increases; under the given structure and size, the heat transfer performance curve of the heat exchanger shows that the increase of shell side flow and Reynolds number has a significant impact on the enhanced heat transfer of the spiral tube. In practical engineering applications, the heat transfer can be strengthened by appropriately increasing the shell side flow of the heat exchanger.
Research on Optimization of collector module of new flat plate heat pipe PV/T heat pump system
Authors: Chen Hongbing , Li Baowu , Wang Congcong , Yao Huaning , Zhang Xiaokun , Zhao Rui , Sun Junhui
Published: August 2022

The mathematical model of a new flat plate heat pipe PV/T heat pump system is established. The experimental data of the system under various working conditions are obtained through experimental measurement, and the accuracy and reliability of the model are verified. Based on the verified mathematical model, the thermal performance, electrical performance and the performance of the heat pump system are simulated. The results show that under winter conditions, the daily average thermal power, electrical power and COP of the system are 274.5 W, 93.5 W and 2.7 W respectively. Due to the low outdoor ambient temperature in winter, during winter operation, the heat collection system will lose a lot of heat to the surrounding environment through the photovoltaic panel surface, resulting in the heat collection of the system cannot meet the heat demand of the heat pump side, which is intuitively shown as the water temperature of the heat collection tank on the evaporation side shows a downward trend throughout the day. Therefore, the collector module of the system is optimized by adding a collector. After optimization, the daily average thermal power of the system is increased to 654.2 W and the COP is increased to 6.9.
Analysis of influence of ripple parameters of heat storage elements on flow and heat transfer performance
Authors: Yu Yuzhen , Di Haikuan , Zhao Bo , Li Haiying
Published: August 2022

In order to study the influence of the corrugated angle and width of enamel heat storage element on the flow and heat transfer performance, a certain enamel heat storage element was numerically simulated by FLUENT software, and the variation curves of internal flow field velocity, temperature distribution, Nusselt number and drag coefficient with Reynolds number were obtained when the corrugated angle and width of the heat storage element were different. Thesimulation results show that when the ripple inclination increases from 20° to 60°, the resistance coefficient of the heat storage element increases, and the Nusselt number increases, and the increase of the resistance coefficient is greater than that of the Nusselt number; when the ripple width increases from 6 mm to 10 mm, the increase of resistance coefficient is small, and the increase of Nusselt number is large.
Numerical simulation and experimental study of contact thermal resistance under high temperature conditions
Authors: Shi Linquan , Li Qiang
Published: August 2022

Contact thermal resistance is an important indicator of the efficiency of heat transfer between contact interfaces.The contact thermal resistance between the interfaces of superalloy GH4169 in high temperature was investigated byusing ANSYS. The real surface morphology of superalloy was obtained with optical microscope, and its surface modelwas reconstructed in ANSYS. Based on the theory of structural mechanics, the elastoplastic deformation of the microstructure of the contact interface is simulated, and analyzed and obtained the contact thermal resistance between contactinterfaces. The effect of interface temperature on the radiative heat transfer between the contact interfaces was studied.At the same time, the impact of radiation heat transfer between contact interfaces in high temperature is considered.Finally, it was tested by using an experimental test device. The result show that the maximum deviation between thecontact thermal resistance and the contact thermal resistance was 12.60%, and the contact thermal resistance betweensuperalloy interfaces decreases with the increase of interface temperature and contact pressure; the contact interfacetemperature difference increases first and then decreases with the increase of interface temperature.
Numerical analysis of the flow parameters on the heat transfer performance of a two-stage spiral casing heat exchanger
Authors: Li Zhiqiang , Liu Xianfei , Wang Fang , Zhu Caixia , Zhang Haofei , Wang Shiyuan
Published: August 2022

The study of the performance of high-efficiency heat pump systems has been a hot issue of general interest in the field of heat pump air conditioning. For the designed and developed two-stage casing tandem heat exchanger of heat pump system, the 3D finite volume method and the realizable k-ε model are used to numerically analyze the influence law of inlet fluid temperature and flow velocity on the overall heat transfer coefficient as well as the Nussle number of inner and outer tubes. The results show that decreasing the inlet water temperature or increasing the inlet refrigerant temperature can improve the overall heat transfer performance; Nuin increases with the increase of water and refrigerant flow rates, while Nuout increases with the increase of water flow rate but decreases with the increase of refrigerant flow rate; Nuin and Nuout both increase with the decrease of water temperature or refrigerant temperature increases.
Energy Saving Analysis of Photovoltaic Roof Based on MATLAB
Authors: Luo Hui , Li Kequn
Published: August 2022

One-dimensional unsteady theoretical models of three different photovoltaic module installation modes are established. Through MATLAB modeling and simulation, the influence of photovoltaic modules on roof heat transfer in different layout modes is compared. Comparing with ordinary roof, the shading effect of photovoltaic roof in summer and heat preservation effect in winter was analyzed. The results show that the PV roof layout with ventilation channel is better in summer. The proof layout with closed flow channel is better in winter.
Estimation of breeding value of blackcurrant genotypes for growth vigour, plant habit and their susceptibility to fungal diseases.
Authors: Seliga Łukasz , Pluta Stanisław , Masny Agnieszka
Published: August 2022

The study was conducted in 2012–2014 at the Experimental Orchard of the National Institute of Horticultural Research in Skierniewice, central Poland. The aim of the research was to assess the breeding value, based on the general combining abilities (GCA), specific combining abilities (SCA) and reciprocal (RE) effects, of six dessert parental forms of blackcurrant for plant growth vigour, plant habit and resistance to fungal diseases: Podosphaera mors-uvae (causal agent of powdery mildew of currant), Drepanopeziza ribis (leaf anthracnose) and Cronartium ribicola (white pine blister rust). The plant material consisted of seedlings of F1 generation obtained by crossing of six blackcurrant genotypes: ‘Bona’, ‘Ceres’, clone D13B/11, ‘Sofiivska’, ‘Vernisazh’ and ‘Big Ben’ in a diallel design according to Griffing’s Method III.It was shown that the cultivars ‘Big Ben’, ‘Sofiivska’ and ‘Vernisazh’ had significantly positive GCA effects for growth vigour and resistance of plants to powdery mildew, whereas ‘Ceres’ – for plant habit, which indicated their high breeding value for these traits. The significantly positive SCA values were estimated for the hybrid family: ‘Big Ben’ × ‘Ceres’ for low susceptibility of plants to powdery mildew and anthracnose. Statistically significant effects for reciprocal crosses (RE) were obtained only for few hybrid families.
Humulus lupulus L. (Hop) Based Silver Nanoparticles: Synthesis, Characterization and Enzyme Inhibition Effects
Authors: Keskin Merve
Published: August 2022

Silver nanoparticles (AgNPs) are well known to have antimicrobial activity, but very little is known about the effect of AgNPs on various enzyme activities. They (AgNPs) are valuable metal nanoparticles that exhibit exceptional properties compared to their bulk materials. Humulus lupulus L. (hops) is an important medicinal aromatic plant used in industry. It has many compounds such as phenolic, flavonoids, tannins, etc. In this study, green syntheses of Humulus lupulus L. based silver nanoparticles were performed. Accordingly, it was determined that HL-AgNPs gave maximum absorbance at approximately 450 nm and nanoparticle sizes ranged from 30.60 nm to 36.72 nm. The potential peaks of the prepared aqueous extract and HL-AgNPs were determined using FTIR-ATR. It was determined that the synthesized nanoparticles gave 2296.89 cm–1, 1161.05 cm–1, 1112.34 cm–1 peaks. Total phenolic content of HL-AgNPs was determined as 30.62 ±0.02 mg GAE/mL, and DPPH· radical scavenging activity IC50 value was determined as 4.4 ±0.01 mg/mL. Inhibitory effects of HL-AgNPs on α-amylase, α-glycosidase and urease enzymes were studied and IC50 values were determined as 3.10 ±0.01 mg/mL, 9.42 ±0.02 mg/mL and 0.76 ±0.01 mg/mL, respectively. The synthesizedHumulus lupulus L. based silver nanoparticles showed better biochemical activity than the prepared Humuluslupulus L. aqueous extract. It is clear that it is possible to use HL-AgNPs obtained by green synthesis in various biomedical applications.
In vitro multiplication of Mentha piperita L. and comparative evaluation of some biochemical compounds in plants regenerated by micropropagation and conventional method
Authors: Radomir Ana-Maria , Stan Ramona , Pandelea Mariana Letiția , Vizitiu Diana Elena
Published: August 2022

The aim of this study was to elaborate an efficient in vitro multiplication protocol for Mentha piperita L. (peppermint) and to perform a comparative evaluation of some biochemical compounds in plants regenerated by micropropagation and conventional method. The use of a plain Murashige and Skoog (MS) basal medium favored the induction of regenerative processes, the percentage of explants that started to grow four weeks after inoculation being 92%. The highest multiplication rate (7.12 shoots/explant) and the highest average shoot length (8.11 cm) were obtained on the MS medium supplemented with 1 mg/L benzylaminopurine, when nodal fragments were used as explants. The rooting phase was not necessary, the shoots developing roots on the multiplication medium. The acclimatization rate of in vitro regenerated plants to ex vitro conditions was 96%. Although biochemical investigations revealed some differences between in vitro regenerated plants and those obtained by conventional methods, the results obtained show that micropropagation can be used successfully to obtain high-quality peppermint biological material, a potential source of bioactive compounds with therapeutic effect.
The effect of silicon and calcium additives on the growth of selected groups of microorganisms in substrate used in soilless cultivation of strawberries
Authors: Frączek Krzysztof , Bulski Karol , Zaleski Tomasz
Published: August 2022

The aim of the study was to evaluate the impact of silicon (Si) and calcium (Ca) added to the substrate (perliteor its mixture with peat) used in soilless strawberry cultivation on the number of different groups of microorganisms in the substrate. Research was conducted on a farm located in southern Poland in which soilless cultivation of strawberries in gutters, under covers, with an irrigation system was carried out. The microbiological analyzes were performed by serial dilution method. The analyzes included determination of the total number of bacteria, actinobacteria, fungi and aerobic atmospheric nitrogen assimilators of the Azotobacter genus. In this work, we showed that the concentration of microorganisms associated with the cultivation substrate may be influenced by the presence of silicon and calcium added to the composition of the substrate. Correlation analysis showed that the addition of Si + Ca to the substrate affects increase in the total number of bacteria in the substrate. The obtained results confirm that the cultivation substrate can be modified in such a way that it is more conducive to the multiplication and survival of bacteria associated with the substrate.
Uterine tumor resembling ovarian sex-cord tumor: case report and review of the literature
Authors: Xu Rong , Shao Liping , Zhang Wenling , Yang Zhi-Long
Published: August 2022

Background

We report the clinicopathological characteristics, immunohistochemical features, ultrastructure, tissue source, differential diagnosis, treatment, and prognosis of a patient with a uterine tumor resembling ovarian sex-cord tumor (UTROSCT).

Case report

A 40-year-old woman had a uterine myoma with enlargement for 2.5 years. An ultrasound examination showed a mixed echogenic mass at the posterior wall of the uterus and a dark cyst in the right adnexal area, which suggested a suspected uterine myoma with liquefaction and a suspected chocolate cyst. The patient underwent transabdominal tumor resection with removal of the right adnexal mass. Through postoperative pathological examination, the patient was diagnosed with UTROSCT. No recurrence was observed after a follow-up of 1 year.

Conclusion

Although UTROSCT is usually benign, it can relapse or metastasize, and patients with UTROSCT need comprehensive diagnosis and treatment.
Property Tax and Sustainable Development in Ekiti State: Citizens’ Perspective
Authors: Adeosun Oluwaseun Titi , Adebowale Israel Olukayode
Published: August 2022

Ekiti State government enacted a new tax policy, the taxation of buildings and landed properties, in order to ensure sustainable development and boost its revenue profile. Although increasing tax revenue represents a vital aspect of developmental policy, knowledge, motivation, and compliance activate tax for inclusive economic development. In line with the fiscal social contract theory and using an exploratory–descriptive research design, this study specifically assesses the citizens’ knowledge and their motivation to pay property tax, and how it affects their level of compliance. Multi-stage, stratified random, and simple random sampling techniques with questionnaires and key informant interviews were engaged. Findings suggested that citizens are not unaware of the property tax and the law backing it up, but due to their lack of trust in the government, their motivation and compliance cannot be improved. However, the government needs to set up practical actions in fulfilling their own part of the contract in order to gain citizens’ trust.
Long-term changes in circulation conditions over southern Poland for the period 1874–2020
Authors: Bielec-Bąkowska Zuzanna
Published: August 2022

The study presents the long-term and annual trends in atmospheric circulation over southern Poland for the period 1874–2020. The analysis takes into account both the type of atmospheric circulation, and the types of air mass and atmospheric fronts. The study showed that there has been a noticeable decrease in the frequency of anticyclonic types of circulation and of air advection from the west and east, and a slight increase in advection from the south, as well as the presence of anticyclonic centres and cyclonic troughs. The research also found considerable changes in the frequency of the presence of polar air and of stationary and occluded fronts, as well as of days with several fronts moving over the study area.
Reflectance Spectroscopy in Geology and Soil Sciences: Literature Review
Authors: Badura Ireneusz , Dąbski Maciej
Published: August 2022

This article presents a literature review of studies utilising reflectance spectroscopy in geological research. We describe a variety of available spectral libraries together with providing examples of spectral reflectance diagrams, and explain the basic spectral ranges. Geologists can use different methods of data collection, for example, sensors mounted on satellites, airborne [including unmanned aerial vehicle (UAV) platforms] or portable spectroradiometers, and different ways of data processing. Most geological mapping based on reflectance spectroscopy is performed in the Arctic region, where vegetation does not obscure images. However, mineral mapping, studies of hot spring deposits, and rock/soil weathering alterations are also performed in lower latitudes. The development, combination and unification of all spectral data acquisition methods open up new possibilities for applications in a variety of geological and soil studies.
THE USE OF BALANCED SCORECARD IN ASSESSING
PUBLIC SERVICE PERFORMANCE
Authors: VRABIE Tincuța , CRISTACHE Nicoleta , NĂSTASE Marian
Published: August 2022

Performance evaluation plays an important role in any organization as an autonomous legal entity with material
and human resources, which are needed to achieve its objectives. Since it is a management tool, in order to understand
the process of performance evaluation, it is necessary to understand the methodological activities based on the stages,
cases, principles, methods, techniques, procedures, and processes, and which are impacted by the behaviour of each
member of that organization in order to ensure the achievement of the indicators set by managers, i.e. to guarantee
performance. Implementing the Balance Scorecard in public services is important and must start from the challenge related
to the performance level, posed to public service managers from the perspective of public service beneficiaries. Evidence
has shown inefficient and even lack of transparency concerning the development strategy of a public service related to its
beneficiaries. Therefore, the main focus of managers, regardless of their position in the organization, must be on the
indicators which assess the degree of satisfaction of public service beneficiaries, employees, the range of procedures,
processes, and the dynamics of results.
Del huerto al territorio: la agroecología como estrategia para la defensa de la tierra y el derecho a decidir entre mujeres indígenas de Chiapas
Authors: Calderón-Cisneros Araceli , Sántiz-Sántiz Celfa Iraida
Published: August 2022

Objetivo: se analizaron los vínculos entre la agroecología y los procesos de defensa de la tierra y el territorio a partir de la experiencia de mujeres indígenas organizadas de Chiapas. Metodología: se implementó una metodología feminista basada en talleres comunitarios, entrevistas y visitas a huertos de 27 mujeres, utilizando como enfoques la ecología política feminista y el feminismo comunitario. Resultados: se observa que las mujeres no han mejorado sus condiciones de acceso a la tierra, cuya titularidad sigue siendo masculina. En los huertos y traspatios realizan prácticas agroecológicas muy vinculadas a sus conocimientos tradicionales; sin embargo, las parcelas familiares y las tierras comunitarias son manejadas con un fuerte uso de agroquímicos. Limitaciones: la temporalidad y la extensión del caso analizado son muy cortas frente al problema histórico de la exclusión de la tierra para las mujeres. Conclusiones: a pesar de no generar cambios cuantitativos, la agroecología fortalece a las mujeres individual y colectivamente; sus traspatios agroecológicos mantienen vigentes saberes y recursos para la vida campesina, y constituyen una base material para la defensa de la tierra-territorio desde espacios cotidianos.
Majas dalam Lirik Lagu Vinushka Oleh Dir En Grey
Authors: Raditya Maulana Hasanudin , Damayanti Silvia
Published: August 2022

The research entitled "Majas in Vinushka Song Lyrics by Dir En Grey" aims to determine the form and function of figurative language contained in song lyrics. The data used in this study are the lyrics of the song Dir En Gray entitled Vinushka. The data was analyzed by using qualitative descriptive method. The theory used is the stylistic theory proposed by Keraf (2006), the theory of figurative language proposed by Tarrigan (2009) and the theory of the function of figurative language. The results shows that there are 2 types of figurative expressions in the lyrics of the Vinushka song, namely metaphorical and personification. The function of the figurative expressions in the song was expalaining, strengthening ideas, and bringing life to inanimate objects.
TRADISI LISAN DALAM ARSITEKTUR
Authors: Purwantiasning Ari Widyati
Published: August 2022

ABSTRAK.  Tulisan ini merupakan sebuah kajian tentang apa itu tradisi lisan dan bagaimana tradisi lisan diterapkan dalam ilmu atau bidang arsitektur. Beberapa teori tentang tradisi lisan tersebut disajikan oleh beberapa ahlinya sebagai sebuah dasar dan referensi dalam mengungkapkan beberapa contoh tradisi lisan dalam arsitektur yang akan ditinjau. Tinjauan yang dilakukan terhadap dua studi preseden yang diangkat dalam tulisan ini menggunakan metode kualitatif deskriptif naratif, dimana Saya mencoba memaparkan beberapa studi preseden tersebut dengan mengulasnya melalui pendekatan tradisi lisan dalam arsitektur. Tulisan ini diharapkan dapat memberikan wacana lebih luas bagi para calon arsitek yaitu mahasiswa arsitektur atau para civitas akademika lainnya sehingga dapat lebih memahami bahwa tradisi lisan tidak hanya berkaitan dengan bidang ilmu sejarah atau budaya saja, namun juga dapat bersinggungan dengan bidang arsitektur terutama yang berkaitan dengan tradisi dalam arsitektur. Tradisi lisan dalam arsitektur ini berkaitan dengan pembuatan rumah-rumah tradisional pada adat-adat tertentu yang akan disampaikan pada tulisan ini.Kata Kunci: tradisi, arsitektur, tradisi lisan, budaya, tradisionalABSTRACT. This paper is a study of what oral tradition is and how it is applied in the science or field of architecture. Several experts present theories about the oral tradition as a basis and reference in revealing some examples of oral tradition in architecture that will be reviewed. The review of the two precedent studies raised in this paper uses a descriptive-narrative qualitative method. I have tried to describe some of these precedent studies by reviewing them through an oral tradition approach in architecture. This paper is expected to provide a broader discourse for prospective architects, namely architecture students or other academics. Thus, they can better understand that oral traditions are not only related to the field of history or culture. But can also intersect with the field of architecture, especially those about tradition in architecture. The oral tradition in this architecture is related to the creation of traditional houses based on certain customs that will be conveyed in this writing.Keywords: tradition, architecture, oral tradition, culture, traditional