bluuebunny/crossref_metadata_2025 huggingface dataset:
KONTRIBUSI KEPEMIMPINAN VISIONER KEPALA SEKOLAH DAN PELAKSANAAN SUPERVISI TERHADAP EFEKTIVITAS SEKOLAH DASAR (SD) DI KECAMATAN DARUL IMARAH KABUPATEN ACEH BESAR
Authors: Sariakin Sariakin , Fitria Nora
Published: April 2023

As an institution, schools are intended to produce academic graduates who have talent and character. High management standards, as well as openness, responsibility, and accountability, are characteristics of effective schools. Efficient schools serve as the best learning environments while providing high-quality teaching. In this study, the principal's initiative was carried out to support teachers and staff in improving the learning process and developing a better teaching and learning environment to achieve academic goals. The implementation of the principal's supervision, the principal's inspirational leadership, and school success are the three variables included in this study. The research was conducted through quantitative research techniques. Each variable can be explained individually thanks to this investigation. The relationship between different variables is evaluated using correlation. 36 elementary school teachers from Darul Imarah sub-district, Aceh Besar district participated in this study. The research findings show that visionary leadership has an average impact on school effectiveness of 4.44. The partial correlation coefficients for school effectiveness are 0.545 and 0.397, respectively. When compared with the principal's visionary variable, the supervisory performance of the principal has a stronger partial correlation coefficient. Substantial correlations were found between Principal Visionary Leadership (X2) 0.399, Principal Supervision Implementation (X1) 0.033, and School Effectiveness (Y) 0.00.
VARIASI PEMEROLEHAN BAHASA PERTAMA PADA ANAK DI LINGKUNGAN KELUARGA TINJAUAN SOSIOLINGUISTIK
Authors: Wahidah Baiq Yulia Kurnia
Published: April 2023

This study shows that there is an analysis of the use of language variations in the acquisition of the first language for toddlers who are in the family environment. Language acquisition has a very close relationship with language use. Language variations used in the family environment can affect a toddler's ability to develop the ability to communicate well with parents and those around them. This study took research subjects on children from the age of 3 years to 5 years. Thus, analysis of linguistic data will be a reference material in finding variations of the language obtained
THE BEHAVIORIAL PHENOMENON OF FRIEND WITH BENEFIT OF ALTER BASE @FWBSMG ON TWITTER
Authors: Bukhori Muhammad Faruq
Published: April 2023

The emergence of alter ego accounts on Twitter triggers a new phenomenon called "friend with benefit," known as FWB. This phenomenon arises because there is a place to share information and communicate with each other. This FWB behavior is mushrooming on social media with an alter ego account, a second account aimed at seeking FWB, and a means of more unrestrained self-expression. This study aims to describe the FWB phenomenon, identify the forms of FWB behavior, and determine how the alter ego's motives account for FWB behavior. The method used in this research is qualitative content analysis with a qualitative approach. The method obtained is based on observations of @FWBSmg tweet content, interviews, and document review. The results of this study indicate that the FWB phenomenon carried out by alter ego accounts on Twitter is carried out because they want to find satisfaction both sexually and emotionally. Not only that but FWB is also conducted to find friends to chat and hang out with. The results of this study also show that the alter ego account is used as a second account to search for FWB and that the pattern used by the alter ego in searching for FWB on Twitter is also supported by the alter base community named @FWBSmg. Alter ego accounts send menfess with the gender terms "M" for male and "F" for a female when looking for FWB. They are also sending menfess photos by covering their faces with stickers; which is done to hide their real identities in public.
MODEREASI RETURN ON ASET PADA DETERMINAN INTELECTUAL CAPITAL
Authors: Hidayat Rahmat , Nainggolan Edisah Putra
Published: April 2023

This study aims to analyze the moderation of return on assets on the factors that influence the disclosure of Intellectual Capital in industrial companies listed on the Indonesia Stock Exchange. The determining factors are company size and managerial ownership. The analysis technique used is multiple linear regression analysis. The results show that partially company size has an effect on Intellectual Capital disclosure, managerial ownership has an effect on Intellectual Capital disclosure, Return on Assets moderates the effect of company size and managerial ownership on Intellectual Capital disclosure, in Industrial companies which are listed on the Indonesia Stock Exchange
INTERAKSI SOSIAL MASYARAKAT BERBEDA AGAMA DALAM PERSPEKTIF KOMUNIKASI ANTAR BUDAYA DI KOTA TUA AMPENAN MATARAM
Authors: Al-Gazali Muhammad Yasin Isa
Published: April 2023

This study aims to describe and explain the condition of the people in Banjar Village, Central Ampenan District, Mataram City which is related to social interaction in people of different religions in the perspective of intercultural communication. In addition, this study aims to determine the extent to which cultural values and norms can affect inter-religious harmony in Ampenan and to find out what factors support and hinder harmony between people of different religions in Banjar Village, Ampenan Tengah District, Mataram.This research is a qualitative research, data collection is done by conducting observations or observations, and interviews. The data analysis used is descriptive qualitative data analysis, namely by means of analysis that tends to use words to explain the findings or data obtained in the research field. From the results of this research conducted in the field, it was found that the form of intercultural communication as a process of acculturation and cultural assimilation that occurred in Banjar Village, Ampenan Tengah District between Muslims and other religions was communication between different cultures and until now they have lived side by side and in harmony without any conflict. whatever the background conflicts due to differences in religion and belief, respect each other's culture. The inhibiting and supporting factors for the creation of intercultural communication are cultural factors that are different but mutually respect one another, language factors that have various forms and communication skills factors.
STRATEGI MENGELOLA KONFLIK SISWA OLEH GURU BK SEBAGAI UPAYA MENGELOLA MANAJEMEN KONFLIK DI MTsS YPK CIJULANG
Authors: Wahidin Aslih , Fitriani Tia
Published: April 2023

Konflik merupakan hal yang sering terjadi di lingkungan social sehari-hari, tak terkecuali di lingkungan sekolah. Konflik di lingkungan sekolah memang tak bisa dihidari, hal ini disebabkan karena adanya perbedaan antar individu maupun kelompok sosial yang berada didalamnya. Disinilah pentingnya upaya guru BK dalam mengatasi konflik yang terjadi agar dapat terselesaikan dengan baik. Untuk meminimalkan terjadinya konflik maka perlu adanya manajemen konflik. Penelitian ini merupakan penelitian lapangan (field research) dengan pendekatan kualitatif. Peneliti melakukan penelitian dengan melakukan kegiatan observasi, wawancara dan dokumentasi di MTsS YPK Cijulang untuk menggambarkan strategi mengatasi konflik siswa oleh guru BK sebagai upaya mengelola manajemen konflik di MTsS YPK Cijulang. Dari hasil penelitian ditemukan bahwa bentuk konflik siswa yang terjadi di MTsS YPK Cijulang mencakup konflik siswa dari dalam diri perorangan, konflik siswa antar perorangan-perorangan dalam lingkungan sekolah, dan konflik siswa antar perorangan dengan kelompok dalam lingkungan sekolah. Sumber konflik siswa yang terjadi di MTsS YPK meliputi beberapa sumber, yaitu bersumber dari tidak pelanggaran peraturan dan tata tertib sekolah, bersumber dari salah pengertian karena kegagalan komunikasi dan kurangnya kerja sama antar siswa. Strategi konflik yang dilaksankan guru BK dalam mengelola manajemen konlik meliputi strategi kalah menang dengan metode paksaan dan tekanan serta strategi sama-sama merugi atau kalah-kalah dengan pendekatan abritasi dan mediasi.
ANALISIS KUALITAS AUDIT DITINJAU DARI ASPEK INDEPENDENSI, PROFESIONALISME, DAN ETIKA AUDITOR
Authors: Wulandari Diyah Arum , Nurcahya Yulida Army
Published: April 2023

Kualitas audit merupakan suatu ukuran penilaian tentang proses dalam melakukan pemeriksaan dan hasil akhir dari suatu proses audit yang dilakukan oleh auditor. Kualitas audit dipengaruhi oleh beberapa faktor. Menurunnya kualitas audit dapat berdampak pada ketidakpuasan penguna jasa audit, yang pada akhirnya menyebabkan berkurangnya tingkat kepercayaan masyarakat terhadap profesi audit. Penulisan artikel ini bertujuan untuk menganalisis kualitas audit ditinjau dari beberapa aspek yaitu independensi, profesionalisme, dan etika auditor. Penelitian ini menggunakan metode kualitatif dengan teknik studi literatur atau studi pustaka dengan mengumpulkan fakta dengan interpretasi yang tepat. Data yang digunakan dalam penulisan artikel ini bersumber dari buku bacaan, google search, dan yang utama dari penelitian terdahulu yang berkaitan dengan topik penelitian. Berdasarkan data yang diperoleh, dapat disimpulkan bahwa independensi, profesionalisme, dan etika auditor berpengaruh signifikan terhadap kualitas audit.
METODE PENYELSAIAN KONFLIK KELALAYAN PEMELIHARAAN SARANA DAN PRASARANA PENDIDIKAN DI SEKOLAH DASAR NEGRI 1 SUKAMULYA
Authors: Nurkiah Nurkiah , Nurhabibah Wiwit
Published: April 2023

Metode dalam penanganan konflik yang timbul dalam bidang sarana dan prasarana pendidikan di Sekolah Dasar Negri 1 Sukamulya, terdapat pada konflik kelalayan dalam pemeliharaan sarana pendidikan. Metode yang di gunakan teridiri dari tahapan analisis konflik, penyusunan konsep, pengambilan keputusan, dan pengawwasan konsep. Metode yang di gunakan dalam penanganan konflik dari bidang wakasek sarana dan prasaranan pendidikan di sekolah dasar. Analisis konflik dari permasalahan tersebut di dapatkan penaganan dari segi pembuatan jadwal secara berkala, dalam penanganan konflik kelalayan dalam pemeliharaan sarana dan prasarana pendidikan.
AKUNTABILITAS DAN TRANSPARANSI PENGELOLAAN DANA DESA SELAMA MASA PANDEMI COVID 19
Authors: Safitri Defiana , Retnosari Retnosari
Published: April 2023

This research’s intend to determine the accountability and transparency of  village fund management during the Covid-19 pandemic by describing the stages of village fund governance for the 2021 fiscal year.This research is a descriptive qualitative type. The object of this reserach is related to the accountability and transparency of the Gunungpring Village Government in managing village funds during the Covid-19 pandemic.The methods used in data collection are observations,interviews and documentation. The results of the research stated that the Gunungpring Village Government has applied the principles of accountability and transparency in the management of village funds in accordance with the rules stated in Permendagri No.20 of 2018.This is evidenced by the high participation of the community in the activities of the Musyawarah Dusun and MusrenbangDes as well as in the planning and implementation process. In the administration stage it has become more systematic with the application of Siskeudes and at the stage of reporting and accountability stage,in submitting accountability reports through information boards and printing billboards containing reports on the realization APBDesa of the current year's
HUBUNGAN PERSEPSI SUAMI, MEDIA INFORMASI DAN PERAN TENAGA KESEHATAN DALAM PEMILIHAN ALAT KONTRASEPSI KB SUNTIK 3 BULAN DI PMB Y KABUPATEN PESISIR SELATAN TAHUN 2022
Authors: Narulita Lina , Herdiana Hedy , Jayatmi Irma
Published: April 2023

Indonesia merupakan negara dengan jumlah penduduk terbanyak no. 4 di dunia setelah China, India dan Amerika Serikat. Berdasarkan hasil Sensus Penduduk 2020, Jumlah Penduduk Indonesia September 2020 sebanyak 270,20 juta jiwa, bertambah 32,56 juta jiwa dibandingkan hasil Sensus Penduduk 2010. Selama 2010-2020, rata-rata laju pertumbuhan penduduk Indonesia sebesar 1,25 persen. Jumlah penduduk laki-laki sebanyak 136,66 juta orang atau 50,58% dari penduduk Indonesia dan Jumlah penduduk perempuan di Indonesia hasil SP2020 sebanyak 133,54 juta orang, atau 49,42% dari penduduk Indonesia. Peran bidan sebagai konselor keluarga berencana ini tidak hanya diperuntukan untuk wanita saja tapi pria juga. Dikarenakan alat kontrasepsi tidak hanya digunakan oleh wanita saja namun pria juga mempunyai alat kontrasepsi tersendiri. Konseling keluarga berencana pascapersalinan yang diberikan oleh bidan tidak hanya diberikan pada ibu sendiri tapi pada saat berlangsungnya konseling diikuti oleh suami istri. Maka dari itu penulis tertarik untuk melakukan penelitian tentang “Hubungan Persepsi Suami, Media Informasi dan Peran Tenaga Kesehatan dalam Pemilihan Alat Kontrasepsi KB Suntik 3 Bulan di PMB Y Kabupaten Pesisir Selatan Tahun 2022”.
PENGARUH PENGGUNAAN NEW MEDIA TERHADAP CITRA MEREK DAN MINAT BELI PELANGGAN PADA E-COMMMERCE “TOKOPEDIA” DI KOTA MEDAN
Authors: Yudha Angga Tinova , Rahma An Nisa Dian
Published: April 2023

Penelitian ini berjudul Penggunaan New Media terhadap Citra Merek dan Minat Beli Pelanggan pada E-commerce Tokopedia di Kota Medan. Penelitian dilakukan karena perkembangan teknologi merubah kebiasaan manusia yang dalam hal ini kebiasaan untuk memenuhi kebutuhan. Tujuan dari penelitian ini adalah untuk menganalisis Pengaruh Penggunaan New Media terhadap Citra Merek dan Minat Beli Pelanggan pada E-commerce Tokopedia di Kota Medan. Teori yang digunakan adalah teori Attention, Interest, Desire, Decision, Action, teori new media, teori Citra Merek dan teori Minat Beli.  Penelitian ini menggunakan pendekatan kuantitatif, dengan metode Survey ekplanatif dengan analisis regresi linear sederhana. Hasil hipotesis kemudian diuji dengan uji-t. Populasi dalam penelitian ini berjumlah banyak dan tidak diketahui pasti. Sampel dalam penelitian ini berjumlah 100 responden, dengan proses penarikan sampel secara purposive sampling. Dari hasil uji hipotesis yang dilakukan terhadap 3 (tiga) hipotesis didapatkan hasil bahwa terdapat pengaruh yang signifikan antara penggunaan new media dengan citra merek pada e-commerce Tokopedia di Kota Medan (p= 0,000 < 0,05) dengan nilai (r = 0,578) menunjukkan tingkat hubungan sedang. Tidak terdapat pengaruh yang signifikan antara penggunaan new media dengan minat beli pelanggan pada e-commerce Tokopedia di Kota Medan (p= 0,187 > 0,05) dengan nilai (r = 0,133) menunjukkan tingkat hubungan sangat rendah. Tidak terdapat pengaruh yang signifikan antara penggunaan new media terhadap citra merek dan minat beli pelanggan pada e-commerce Tokopedia di Kota Medan (p= 0,319 > 0,05) dengan nilai (r = 0,134) menunjukkan tingkat hubungan sangat rendah.
Prática pedagógica no ensino de redação ENEM: o estado do conhecimento
Authors: Pacheco França Costa Mireile , Oliver Martins Pura Lúcia , Mann Pereira Cléo
Published: April 2023

Este artigo tem como objetivo fazer um levantamento das pesquisas acadêmicas que trabalham a prática pedagógica de redação ENEM, tendo em vista verificar tendências, recorrências e lacunas nesse segmento, possibilitando verificar um caminho para que novas pesquisas se desenvolvam ou sejam revisitadas em uma outra abordagem ou até mesmo atualizadas em virtudes das mudanças ocorridas ao longo do tempo. Trata-se de uma pesquisa qualitativa, modalidade Estado do Conhecimento conforme ROMANOWSKI e ENS (2006), FRANCO e GHEDIN (2008) e ROMANOWSKI e VOSGERAU (2014). O corpus analisado foram as produções brasileiras extraídas da Biblioteca Brasileira Digital de Teses e Dissertações (BDTD) sem marcador temporal para delimitar a busca considerando que o Exame Nacional do Ensino Médio (ENEM) surgiu em 1999. De acordo com o objetivo foram criadas duas categorias: Prática Pedagógica e Princípios Normativos sobre ensino de redação e, quando necessário, desenvolvemos subcategorias. O estudo aponta a concentração das produções na Região Sudeste do país e o interesse dos pesquisadores pela Prática Pedagógica do Ensino de Redação ENEM, seja pelo destaque da disciplina em virtude do exame externo, seja porque funciona como ferramenta de ingresso no ensino superior. Fato é que os resultados apontam a necessidade de mais pesquisas sobre esse tema, principalmente no tocante ao uso de tecnologias no ensino de Redação e nesse contexto de transição pandêmico com aulas remotas, em que tais recursos ganham mais evidência e a prática requer novas orientações.
LEVELS OF RADIONUCLIDE CONTAMINATION OF FISH OF VERSHYNA LAKE IN THE CHORNOBYL EXCLUSION ZONE
Authors: Kaglyan A.E. , Gudkov D. I. , Kireev S.I. , Yurchuk L.P. , Menkovska M.A.
Published: April 2023

The levels of specific activity of 90Sr and 137Cs in fish of one of the most polluted reservoirs of the Chornobyl Exclusion Zone (ChEZ) - Vershyna Lake. During the research period from 2011 to 2021 for all studied fish of the lake. The peak ranges of the specific activity of radionuclides are noted at the level of 32960-213300 (average value 67832-22936) Bq/kg for 90Sr and 838-25907 (4811-569) Bq/kg for 137Cs. It is shown that at the current stage, the specific activity of 90Sr in the ichthyofauna of the lake exceeds the permissible levels, which are accepted in Ukraine for fish products in more than 942-6094, and 137Cs - in 6-173 times. The 90Sr/137Cs ratio in lake fish is in the range of 3-108. The distribution of radionuclides in the organs and tissues of silver crucian carp is given. Estimated dose rate of fish irradiation of the Vershyna Lake. As shown by the results of studies of the ichthyofauna of Vershyna Lake , the maximum average dose rate irradiation was noted in representatives of bentophagous Prussian carp (149,5-12,1 ?Gy/h), the minimum - in the pelagic Sunbleak (56,2-5,1 ?Gy/h). It was noted, that 90Sr is the dominant radionuclide in the formation of the total radiation dose of fish from Vershyna Lake (in contrast to all other investigated reservoirs of the ChEZ).
IMPROVED DEEP LEARNING APPROACH IN WIND TURBINE DAMAGE DETECTION
Authors: Knap Pawel , Balazy Patryk
Published: April 2023

The growing number of wind farms is creating an increased demand for their trouble-free operation. Damage to their components can be catastrophic. A particular component that can be subject to damage during long-term operation and is difficult to diagnose is the mechanical gearbox located in the turbine. Traditional approaches to the subject of damage detection require, in the final stage, the involvement of an expert. Therefore, the article proposes a method based on the Deep Learning solution. A transfer learning method and a pre-trained Inception V3 network were used. A gearbox with in three states of healthy, worn out but still working and damaged was analyzed. Signal spectrograms were created from accelerometric measurements and then used as input for the neural network. Various approaches to creating spectrogram images were tested. The InceptionV3 network was taught on images generated in grayscale, and RGB and HSV. Channel reduction in the form of using grayscale improved the speed of the algorithm at the expense of precision. The use of HSV scale, on the other hand, made it more precise in detecting a worn out state.
RESIDUAL BIOMASS CHARACTERIZATION AND EVALUATION OF ITS INFLUENCE ON PYROLYSIS PROCESSES
Authors: Batista Gabriel F. , Brito Paulo
Published: April 2023

Biomass is extensively accepted as one of the main potential sources for sustainable and renewable generation of fuels, chemicals and other carbon-based materials. Many advantages are reported using biomass as an energy source, such as being a non-polluting alternative and its carbon neutrality. Numerous processes can be used to convert biomass, and namely the pyrolysis process is a renewable, economical, and efficient way to produce chemicals and/or energy. Therefore, pyrolysis is an available technology for biomass conversion into energy. It consists of a thermal decomposition process with the absence of oxygen, converting biomass into 3 fractions: biochar (solid fraction), bio-oil (liquid fraction) and gases. Hence, pyrolysis is a recognized industrial process for biomass energy and chemical conversion. The bio-oil and biochar can be used as a fuel and as fertilizer respectively, and the gases can be recycled back into the process. Biomass samples were characterized by proximate analysis, determining fixed carbon, moisture, volatiles and ashes composition, and by ultimate analyses, determining the content of C, H, N, S and O. The content of hemicellulose, lignin and cellulose was also determined. The methodologies are described elsewhere and all characterizations were performed on a dry basis. Pyrolysis tests were performed in a fixed-bed vertical pyrolysis oven, with a maximum temperature of 500 to 700 ?C, variable heating rate up to 50 ?C/min, retention time of 0.5 h, and N2 flow of 20 mL/min. The bio-oil and biochar were qualitatively characterized using FTIR and the products distribution was analyzed in relation to the biomass samples previous characterization.
BIOPOTENTIAL OF AGRICULTURAL WASTE: PRODUCTION OF BIOFERTILIZERS AND BIOFUELS
Authors: Chernysh Yelizaveta , Ablieieva Iryna , Chubur Viktoriia , Skvortsova Polina , Roubik Hynek
Published: April 2023

This article is focused on performing a SWOT analysis of agricultural waste management methods. This approach can be applied in the biogas technology strategic planning process in Ukraine, which can solve the issue of implementation of environmental guidelines for the development of biofuels and biofertilizers. The main factors that determine how digestate is used are its quality, local conditions, regulations, and documents. Fertilizing fields with digestate provides many advantages, for example: reduced demand for plant protection products, reduction of unpleasant odor, and destruction of possible pathogens. The strengths and weaknesses of the implementation of biogas plants in Ukraine have been identified, and opportunities and threats have been considered. In general, the introduction of biogas technology is a very promising solution for the agricultural sector. Taking into account that a biogas plant is considered a potentially hazardous object for workers, it is necessary to constantly monitor the parameters of reactor operation in order to ensure the technological and environmental safety of the engineering facilities. For Ukraine, there is a shortage of specialists to set up an effective operation of biogas equipment and bring it to the industrial scale. It is necessary to consult with medium and small farms interested in the feasibility study and implementation of biogas technologies.
VALORIZATION OF RED MUD AS A CATALYST IN THE TREATMENT OF OLIVE MILL WASTEWATER BY FENTON REACTION
Authors: Albqmi Mha , Belaiba Amani , Hodaifa Gassan
Published: April 2023

The worldwide olive oil sector is a strategic sector for olive oil producing countries due to olive oil nutrition and health benefits. With what is being produced of olive oil, it continues to produce wastewater with a significant environmental impact due to the high organic load and the biochemical composition of this wastewater, particularly, the presence of microbial growth inhibiting compounds such as phenolic compounds, which makes its biological treatment difficult. On other way, red mud, the main leaching residue resulting from the alkaline treatment of bauxite (Bayer process), can be used as catalyst in chemical processing. Bayer red mud reveals high alkalinity, strong water absorption, and a large content of iron. The presence of metals in the composition of the red mud, such as iron dioxide (hematite), titanium dioxide, etc. allows its use as a catalyst in advanced oxidation processes. In this work, red mud has been revalued as a catalyst in the treatment of olive mill wastewater (OMW) by Fenton reaction. All experiments were carried out at laboratory scale in reactor with capacity of 500 cm3. Experiments have been carried out at different concentrations of red mud 0.05, 0.10, 0.5, 1.0, 2.0, 4.0, 5.0, 20, and 30 g/L. In parallel, three control experiments were carried out using only hydrogen peroxide or hydrochloric acid or red mud without pH adjustment (adsorption experiment). Experimental results have determined that the introduction of red mud as a catalyst in the like Fenton reaction (H2O2/red mud) with concentrations higher than 0.05 g/L has allowed the increase of the degradation percentages until reaching stable values at red mud concentrations higher than 5 g/L. The removal percentages at 0.5 g/L of red mud were COD = 47.1 %, total organic carbon (TOC) = 58.1 %, total carbon (TC) = 66.8 %, total nitrogen = 44.1 %, and total phenolic compounds (TPCs) = 63.5 % versus 57.2 % for COD, 74.4 % for TOC, 79.9 % for TC, 70.7 % for TN, and 66.0 % for TPCs in Fenton like reaction with 5 g/L of red mud. The common operating conditions were initial COD of OMW = 6171.9 mg O2/L, initial TOC of OMW = 3253.7 mg/L, pH = 3, magnetic agitation speed = 460 rpm, environment temperature, and the H2O2 at 10 % (w/v) added to the OMW according to the stoichiometry of the reaction. Given these results, it can be concluded that red mud can be a promising catalyst in oxidation systems based on the Fenton reaction allowing the incorporation of wastes into new green processes leading to the achievement of circular economy in industrial processes.
A SENSITIVITY STUDY OF THE NON-HYDROSTATIC REGIONAL CLIMATE MODEL REGCM-4.7.1 TO PHYSICAL PARAMETRIZATION SCHEMES OVER THE BALKAN PENINSULA AND BULGARIA
Authors: Valcheva Rilka , Popov Ivan , Gerganov Nikola
Published: April 2023

The aim of this study is to present preliminary results of testing the new non-hydrostatic dynamic core of the regional climate model RegCM4.7.1 by varying different parametrization schemes over the Balkan Peninsula and Bulgaria. A one-way double nesting technique was applied, employing a mother domain with 15 km grid spacing and a nested domain with 3 km grid spacing. Twenty test simulations were performed with a model resolution of 15 km for the year 2000 on a Lambert Conformal Conic projection and 12 test simulations with a model resolution of 3 km for one monthJanuary 2000. Two planetary boundary layer schemes (UW PBL and Holtslag), four cumulus schemes (Emanuel, Grell, Tiedke and Kain-Fritsch), three explicit moisture schemes (Nogherotto-Tompkins, WSM5 and SUBEX) and two shallow convection configurations (MM5 and Tiedke) were tested. We used ERA-Interim reanalysis as boundary conditions for the 15 km runs with 0.75-degree horizontal resolution. The results are presented for several model output parameters (precipitation, temperature, surface pressure and cloud fraction cover). The output is compared with E-OBS observational dataset, satellite-based observations and ERA-Interim reanalysis. Based on the results, the model is sensitive to the choice of different parametrization schemes. The 15 km simulations overestimate the precipitation and underestimate the temperature in all scheme configurations. The biggest biases in precipitation and surface pressure we found in simulations with combinations with Nogherotto-Tompkins moisture scheme. In the case of 3 km simulations, UW PBL scheme with WSM5 moisture configurations and Nogherotto-Tompkins configurations gave the largest biases for the studied territory.
BIOCOVER COMPOSITION IMPACT ON LANDFILL METHANE EMISSIONS REDUCTION
Authors: Siltumens Kristaps , Grinfelde Inga , Liepa Sindija , Puzule Elina Paula , Burlakovs Juris
Published: April 2023

Solid municipal waste landfills are the third largest source of man-made methane emissions. Methane is one of the greenhouse gases contributing to global warming. The capture of methane emissions in the waste sector is addressed by collecting it and using it for energy production. Methane emissions from active or closed landfills can be reduced by methane oxidation, which is developed as a covering over these landfills. It is usually composed of a gas distribution layer that favours micro-organisms that consume methane. The aim of this study is to find the most appropriate composition of the biocover in which filling material waste is used. In laboratory conditions, an experiment was conducted that studied the effectiveness of the biocover developed in the laboratory. Three experimental columns were created at a height of 160 mm and 1500 mm. A active compost saturated with water at a thickness of 500 mm was used as a source of methane, a permeable layer of sand at a thickness of 300 mm was further formed and finally covered with biocover. The biocover was composed of 60% of fine fraction waste, 20% soil and 20% compost, of the total volume. The experiment was created on 6 June 2022 and the first measurements were made two weeks later with CRDS equipment Picarro G2508. Measurements were made weekly for 4 months. The results of the study show that methane is released more forcefully after the first two months of application of the biocover. This is related to compost in the biocover, which has started to decompose actively, that methane oxidising micro-organisms develop on average after two months.
CHALLENGES DURING ORES SINTERING PROCESS AND POSSIBLE IMPACT OF THE USE OF ARTIFICIAL INTELLIGENCE
Authors: Wa Kalenga Michel Kalenga
Published: April 2023

The sintering process has been used for years to agglomerate ores to prepare the material for better operations in furnaces. Many research works have been conducted at bench scale and upscaled to industrial. The composition of the raw material, the homogenization of the feed, the challenges due to granulometry, moisture content, the distribution of gases in the burden, the impact of the fuel on the morphologies obtained in the sinters have been largely investigated. During sintering, fossil fuels such as coke breeze and coal are used for combustion to supply the required heat. From the combustion process gas emissions ensue. These gases may contain CO, CO2, NOx, SOx including volatile organic matters that are found in the fuel. Although some of the gases recondense on their way out of the sinter strand, mitigating technologies have not stopped being lurched for. Improvements were made but many challenges remain, and more efforts are required to not only better the quality of sinters produced but reduce the level of pollution. The current paper discusses some challenges and aspects such us the punctual inhomogeneity of the burden, the variability in oxygen potential in each point of the burden which influence the formation of phases present in the final sinters therefore their properties that need more understanding, pollution due to the use of fuel used and required solutions. The use of fourth industrial revolution as key element in the improvement on prediction and a fast-tracking response not only to the quality of the burden, sinters produced but also the lowering of pollution during sintering process.
INFLUENCE OF GROWN CULTURE ON N2O FORMATION
Authors: Liepa Sindija , Siltumens Kristaps , Pilecka-Ulcugaceva Jovita , Grinfelde Inga , Butenaite Dace
Published: April 2023

Crop cultivation is beneficial for reducing soil erosion and nutrient loss, but there is conflicting information on how crop cultivation affects emissions of nitrogen dioxide (N2O), a potent greenhouse gas. Judicious selection of the cultivated crop in a plant succession is considered an effective approach to maintaining crop productivity. In this paper, we investigated the effects of cultivated crops on soil N2O emissions. Eight crops were used in this study: barley, buckwheat, clover, oats, potatoes, spring wheat, winter wheat and canola. Samples were collected in 32 experimental plots as well as a control plot. The samples are thus weighed in 3 l buckets, each 1.8 kg in total. Two samples were weighed from each plot to allow for different moisture regimes. Moistening is designed for wet aerobic and wet anaerobic soil conditions. Information on changes in soil weight after soil wetting was also collected. Measurements of N2O isotopes were performed using the Picarro G5131-i equipment in laboratory conditions. The obtained data were collected and analyzed. It was concluded that not all the obtained differences in N2O isotope data dispersion can be directly related to the cultivated crop, the physical properties of the soil, the use of fertilizers and the influence of the microorganism population cannot be excluded. The maximum value of ?15NSP value is 18.58 and the minimum value is -53.41. On the other hand, the maximum value of ?15Nbulk values is 26.76, and the minimum value is -56.97. In the conclusions, we get that both nitrification and denitrification dominate among cultures.
MODERN TRANSLATION IN CLIMATE CHANGE NOWADAYS
Authors: Pascalau Raul , Smuleac Laura , Stanciu Sorin , Imbrea Florin , Smuleac Adrian
Published: April 2023

In the era of digitization, in a context where climate changes affect all sectors of activities and life itself, modern translation has a crucial role and a major importance in all the activities related to the prevention and education of young generations and not only, from the modern societies to the disadvantaged backgrounds. The most valuable and important information, as well as all the EU regulations, procedures, resources, manuals, books, may be transmitted nowadays through translation worldwide. Using modern tools, modern CAT tools, huge amount of data may be converted from one language to several ones in a very short time. It is of a great importance that all the educational process related to climate change, all the measures, especially for the actual and future generations from several disadvantaged countries where air pollution it is increased over-passing the limits and threatening environment and society, may be translated into the national languages so it may be available and also possible to be taught. The acknowledgement of the danger of air pollution and climate change may reach through translation to a very large scale of the population.
SOILS FROM TIROL AND MOLDOVA NOUA VINICULTURAL CENTRES
Authors: Mihut Casiana , Okros Adalbert , Nita Lucian Dumitru , Mircov Vlad Dragoslav , Duma-Copcea Anisoara
Published: April 2023

Research presented in this study aimed to identify the soils from two vineyards, Tirol and Moldova Noua, and to determine the physical and chemical properties of the soils there. Most of the vine plantations in the southern part of the vineyard are on soils that provide very good conditions for growth and development, especially for red wine vines. Preluvosoil, aluviosoil, districambosoil, and lithosol predominate the plateau. Following the research and analyses carried out, the following conclusions can be drawn: total soil porosity had values between 50-55% in the Tyrol vineyard and between 50-66% in the Moldova Noua vineyard; pH of the soil in the Tyrol vineyard had values between 5.6-5.8 and between 4.5 and 8.3 in the Moldova Noua vineyard; humus content had values between 1.03-1.97, i.e., very small to medium values, in both vineyards; total nitrogen content was 0.119-0.231%, total phosphorus content was between 0.213-0.350%, and mobile phosphorus content was 4 mg/100 g soil. The soils in the Moldova Noua vineyard have a rich skeleton, especially those located in the middle of the slopes, where the percentage of the skeleton is between 18.1-26.8%. Thus, knowing the physical and chemical properties of the soils in the Tirol and Moldova Noua vineyards, it can be stated that the soils most suitable to be planted with vines are those in the Moldova Noua vineyard. This study is particularly important from the perspective of the necessary information obtained in the cultivation of vines and not only.
THE DEVELOPMENT OF ECONOMICALLY EFFICIENT NON-POLLUTING TECHNOLOGIES FOR SOYBEANS
Authors: Nita Simona , Nita Lucian Dumitru , Okros Adalbert , Botos Lucian Florin , Birliba Livia
Published: April 2023

The main hope for solving protein deficit is the cultivation of legumes, which is why the -Protein Advisory Group of the FAO- initiated a new green revolution, that of vegetables. The researches of the last decades have shown that, in the nodule of the roots of leguminous plants, nitrogen accumulates through the activity of the bacteria living in these nodules. The symbiosis is dependent on endogenous and exogenous factors that ensure the functioning and regulation of fixed nitrogen. The paper presents the results obtained based on different soybean varieties, the influence of bacterization and of the sowing period on soybean yield, protein content, and protein amount. The soybean varieties Felix, Rubin and Venera were studied. Germination of seeds before sowing increased yield by 10%. The climate conditions of the experimental years influenced yield and protein content. At the same time, it can be stated that they corresponded to the soybean requirements in all phases of vegetation.
WIND INDUCED RESUSPENSION OF PARTICULATE MATTER FRACTIONS IN URBAN ENVIRONMENT AND THEIR CORRELATION TO NITROGEN OXIDES
Authors: Linda Jakub , Uhlik Ondrej , Kobolova Klaudia , Pospisil Jiri , Apeltauer Tomas
Published: April 2023

Air pollution by particulate matter (PM) in urban environment is an ongoing problem with increasing severity. With the gradual evolution of electromobility and lowemission heat sources, the focus is shifting to non-exhaust PM emissions. Wind induced PM resuspension is one of them. This source is hardly amenable to mitigation measures. It was assumed, that only coarse PM (PM10-2,5) can be lifted from the ground by the wind. By the evaluation of the long-term data series, we can divide the PM10 concentration to its fractions PM10-2,5, PM2,5-1, PM1 and evaluate their behaviour. The aim of the work was to evaluate the data in order to recognize the resuspension process, even with a fine fraction, PM1. The data were then compared with the NOx values to determine if the PM originated from combustion processes. The original assumption of a correlation between NOx and PM1 was not confirmed in most cases. The results show that in some cases coarse PM are dominantly associated with NOx. The correlation of fine and coarse particles with NOx in resuspension process depends primarily on the time period of the day.
SIMULATION OF IMPACT ON FIBERGLASS LAMINATED PACKAGES
Authors: Ojoc George Ghiocel , Deleanu Lorena , Chiper Titire Larisa , Muntenita Cristian , Pirvu Catalin
Published: April 2023

A designed protection system should not fail once or under a small number of hits. Tests to assess ballistic protection are expensive and numerous. The simulations support engineers in limiting the number and complexity of impact tests. This paper discusses the failure mechanisms and simulated impact phases between a bullet (similar to 9 mm FMJ) and a panel made of 8-layers, 12-layers and 16-layers, at two impact velocities, 373 m/s and 420 m/s. respectively. The 8-layers and 16-layers simulations are compared to the actual tested panels and, based on these FE models, an intermediate panel of 12 layers is evaluated for its impact resistance, suggesting that it could be adequate for the lower impact velocity, but not for the higher one.
CHANGES DETECTION IN THE SPATIAL AND TEMPORAL DISTRIBUTION OF VEGETATION, BASED ON NDVI VALUES
Authors: Copacean Loredana , Popescu Cosmin , Horablaga Adina , Simon Mihai , Cojocariu Luminita
Published: April 2023

The way of land use and implicitly the spatio-temporal distribution of plant species are subject to quantitative and qualitative changes, under the influence of natural and/or anthropogenic factors. Appreciation of the spatio-temporal "mobility" of vegetation can be done through different work protocols, some of which are geomatic methods applied to satellite images. In this context, the purpose of this study is to analyze the trends in the dynamics of vegetation and land use, over a period of approximately 35 years, based on Landsat images and the Normalized Difference Vegetation Index (NDVI), at the level of the southwest area of Romania. The obtained results provide an overview of the land use/land cover at the level of the entire study area, but also highlight the aspects related to the vegetation cover. The research results draw attention to the transformations that have occurred in the vegetation cover of the area of interest, through the reduction or loss of the areas of some plant species or their territorial "inversion", which can produce effects on the biodiversity of the study area. On the other hand, such studies can be considered a starting point in local or regional management strategies
DEVELOPMENT AND MINERAL CHARACTERIZATION OF MILK CHOCOLATE FORTIFIED WITH CHICKEN EGGSHELL POWDER
Authors: Cozma Antoanela , Popescu Sofia , Rada Maria , Mihut Casiana , Velciov Ariana
Published: April 2023

Taking into account the fact that by fortifying chocolate, more nutritious and healthier chocolates are obtained, in this work we set out to obtain an assortment of milk chocolate with the addition of chicken eggshell powder and to evaluate its mineral intake. Practically, the purpose of this experiment is the superior valorization of eggshell waste from household activities as a mineral fortification for milk chocolate. Four types of milk chocolates were prepared with the addition of 0, 1, 2 and 4% chicken eggshell powder, which were analyzed from the point of view of Ca, Mg, Fe, Mn, Zn and Cu. The results obtained from the analysis of chocolates show an increase in the mineral concentration of milk chocolate with the increasing addition of eggshell powder: 265 � 1.724 mg/100g Ca; 124-140 mg/100g Mg; 2.947 � 3.231 mg/100g Fe; 0.569 � 0.612 mg/100g Mn; 2.407 � 2.460 mg/100g Zn and 0.940 � 0.988 mg/100g Cu. Under the conditions of the present experiment, a consumption of 50 g of chocolate with 1 - 4% eggshell powder covers a good part of the recommended daily mineral requirement: 31.47 - 86.20% Ca - for women and men; 15.21 - 22.66% Mg for women and men; 8.19 - 20.19% Fe - for men and women; 12.46 - 17.08% Mn - for women and men; 10.97 - 15.38% Zn - for men and women respectively; 52.50 - 54.89% Cu - for women and men. A possible increase in the mass of eggshell used for the mineral fortification of chocolate is possible, but this may decrease the sensory quality of the chocolate, especially in terms of texture and taste. The obtained results confirm the fact that milk chocolate fortified with 4% eggshell has a higher mineral intake than nonfortified chocolate, especially from the point of view of Ca and Mg content.
THE RESPONSE OF SOME WHEAT QUALITY INDICES TO FOLIAR FERTILIZATION
Authors: Crista Florin , Imbrea Florin , Radulov Isidora , Batrina Stefan , Banatean-Dunea Ioan
Published: April 2023

A good soil fertility program requires vision and planning. Achieving cost-effective and efficient wheat production involves providing sufficient amounts of plant nutrients when and where the crop needs them.
Wheat is a particularly demanding crop for fertilization, which reacts positively to the application of fertilizers. Cereal consumes moderate amounts of nutrients due to the fact that its roots explore a smaller volume of soil.
The influence of foliar fertilizers for different crops is diverse and depends on the plant species. Foliar application can guarantee better availability of nutrients to crops and also achieve higher yields.
Nutrient concentration and temperature should be optimal to avoid leaf burn, and the fertilizer source should be water soluble to be more effective.
The role of macro and microelements is crucial in plant nutrition and in obtaining higher yields. Nitrogen (N), phosphorus (P) and potassium (K), the primary essential macronutrients, are of primary importance in crop nutrition. Nitrogen is the primary constituent of proteins and therefore of enzymes. Phosphorus is involved in almost all biochemical processes as part of energy-carrying compounds.
This work follows the evolution of some wheat quality indices under the variation of nitrogen content. [7]
The research was carried out in the experimental field at USVT and later in the Agrochemistry laboratory of the Faculty of Agriculture.
EARLY AGE MECHANICAL PROPERTIES OF CEMENT BASED MORTAR WITH ZEOLITE AGGREGATES
Authors: Toma Ionut-Ovidiu , Olteanu Ioana , Taranu George , Banu Oana-Mihaela , Alexa-Stratulat Sergiu-Mihai
Published: April 2023

As natural resources are rapidly depleting and the demand of cement based products in construction industry is continuously increasing, there is a pressing need for finding alternatives without large penalties in terms of mechanical properties. Another issue to be resolved is related to current design guidelines developed for traditional cement based materials (e.g. mortar and concrete). Zeolites, either natural or synthetic, are crystalline alumina silicates with pozzolanic activity in cement based materials that lead to obtaining mortars and concrete with improved elastic, mechanical and durability properties. They represent a viable alternative to river or quarry aggregates. The paper focuses on assessing the early age mechanical properties of cement based mortar with natural zeolites aggregates that were used to replace river sand in different percentages: 10, 20 and 30 percent by mass. A mortar mix, without zeolite aggregates, was also considered and served as reference. Standard 40?40?160 mm mortar prisms were cast and then cured in water for 14 days. The samples were measured and weighed in order to determine the density of the mortar mixes. The damping material properties were determined based on ASTM C215 code. Flexural and compressive strength were determined in accordance to SR EN 196-1 specifications.
A MINIATURISED ONBOARD PLATFORM FOR OPTIC SENSORS STABILIZATION ON A SMALL UAV PLATFORM
Authors: Larco Ciprian , Grigorie Lucian , Mihai Razvan , Tofan-Negru Andra , Pahonie Radu
Published: April 2023

A miniaturized on-board platform for optic sensors stabilization is the proposed concept developed and tested by a multidisciplinary team of engineers under a UEFISCDI (the Executive Agency for Higher Education, Research, Development and Innovation Funding in Romania) research funding. The need for a UAV to capture images and give in-depth information of ground objects is fulfilled by the developed three-axial stabilized optical system. Modern techniques, technologies and state-of-the-art electronics are employed in the design process � by use of CAD, FEM and CFD software for multiple potential configurations trials; in the manufacturing endeavourwith 3D printing and CNC machining, as well as for software and hardware implementation and simulation testing- by use of robust control algorithms and adaptive control methods. The selected exterior shell of the optical system was derived under dimensional constrains imposed by the aerial platform, for aerodynamic efficiency and structural strength. The electric motors were selected for reliability and endurance under: weight and dimensional constraints.