bluuebunny/crossref_metadata_2025 huggingface dataset:
BRANDING dan OPTIMALISASI TEKNOLOGI INFORMASI UMKM UNTUK MENINGKATKAN PENJUALAN PRODUK KUE CUHCUR TEH OPI SEBAGAI PRODUK UNGGULAN UMKM DESA SUKABAKTI TAROGONG KIDUL KABUPATEN GARUT
Authors: Tri Utami Alia , Irhamuddin Muhammad , Nurhayati Risti , Mery Lestari Jesica , Darmawan Indra , Rohanah Een , Sri Agustina Istiqomah , Iskandar Yogi , Nur Anggraila Auriela , Raina Rinda , Zaldy Ardiansyah Muchamad
Published: October 2024

Pertumbuhan usaha kecil dan menengah (UMKM)  khususnya di Desa sangat penting dilakukan untuk mendorong pertumbuhan ekonomi di Desa maupun Nasional. Pengembangan usaha yang dilakukan berhubungan erat dengan strategi pemasaran, salah satu caranya adalah dengan cara branding. Proses branding ialah aktivitas promosi untuk memberikan merek serta atributnya agar produk UMKM dapat dikenal lebih luas dan meningkatkan penjualannya. Selain itu, pemanfaatan teknologi digital melalui optimalisasi teknologi data dan belanja online juga menjadi kunci dalam memperluas jangkauan pasar dan meningkatkan daya saing. UMKM Kue Cuhcur Teh Opi termasuk dalam usaha kecil dan menengah yang menjual produk unggulan di Desa Sukabakti. Tim Kelompok KKN 60 Universitas Muhammadiyah Bandung melakukan pengembangan usaha melalui branding dan optimalisasi informasi teknologi. Bekerja sama dengan Dinas Koperasi dan UMKM kota Garut, Tim KKN melakukan berbagai aktivitas pemasaran yang membantu UMKM Desa Sukabakti khususnya UMKM Kue Cuhcur Teh Opi. Aktivitas tersebut dilakukan sesuai dengan analisis kebutuhan yang dilakukan pada UMKM Kue Cuhcur Teh Opi antara lain, branding produk (pembuatan logo dan packaging) pendaftaran akun shopee, pembuatan titik Lokasi pada google maps, dan pembuatan NIB agar usaha Kue Cuhcur Teh Opi berpayung hukum. Peningkatan pengelolaan perusahaan merupakan tujuan dari upaya pengembangan yang dilakukan melalui branding melalui teknik pemasaran dan peningkatan cakupan exposure produk melalui cara digital. Pengumpulan data dilakukan melalui wawancara dan pengamatan langsung sebagai metode pilihan yang digunakan. Hasil dari kegiatan pengabdian Masyarakat ini adalah terciptanya logo baru yang lebih menarik, kepemilikan NIB, terdaftarnya akun shopee dan titik lokasi usaha pada google maps.
Figure 1: Treatment of Hepatitis C Virus Infection in Treatment-Naive Adults
Authors:   Editors from The Medical Letter
Published: October 2024

Figure 1: Treatment of Hepatitis C Virus Infection in Treatment-Naive Adults
Evaluating the Effectiveness of Machine Learning-Based Intrusion Detection in Multi-Cloud Environments
Authors: AL Masoodi Hussein Jawad Kadhim
Published: October 2024

In the dynamic landscape of cloud computing, multi-cloud environments have emerged as the prevalent ones due to offering a host of advantages including redundancy, flexibility, and increased security. These multi-cloud environments can, however, be vulnerable to stealthy cyber-attacks, thereby making it a challenging job to find efficient intrusion detection systems (IDS).
The efficiency of the Machine Learning-based Intrusion Detection System in multi-cloud environments has been evaluated using a 1-D Convolutional Neural Network to classify network traffic based on the UNSW-NB15 dataset. The dataset included a wide variety of network features, and it was decided that it could be used directly after converting the categorical variables into their numerical forms and scaling them with MinMaxScaler.
This was used for training and testing the 1D-CNN model, which had attained an accuracy of 84.02% during training and 82.79% on validation. Further, the performance of the model is elicited with metrics that include precision at 80.91%, recall at 82.79%, and an F1-score at 81.28%, showing its capability in identifying network intrusions effectively.
The small difference between the accuracy of training and validation shows that overfitting was minimal; thus, the model will generalize well when applied to unseen data. This research underlines the possibility of using deep learning techniques, and particularly CNNs, for intrusion detection in complex multi-cloud infrastructures. Probably future work would be optimizing the model through hyperparameter tuning, using additional sources of data, and even exploring much more sophisticated architectures that will further improve the accuracy of intrusion detection.
Bio-Convective Thermally Radiated Casson Fluid Model PDEs Past over a Darcy-Forchheimer Porous Stretched Sheet via OHAM Strategy
Authors: Abbas Syed Tehseen , Jahan Shah , Afzal Arsalan , Sohail Muhammad
Published: October 2024

The current study examines the topic of continuous flow of nanofluids over two-directional boundary level employing Casson heat transmission across a linearly stretched sheet. Firstly, the partial differential equations are transformed into non-linear ordinary differential equations with the help of similarity parameters. These non-linear ordinary differential equations are solved with the given boundary conditions by applying the BVPh2.0 method on Mathematica software. The effects of magnetic impact, radiation parameter, porosity number, Brownian motion parameter, thermophoresis parameter, Casson fluid parameter, Schmidt number, Prandtl number, peclet number, bioconvection on Velocity, temperature and concentration profiles is observed. It is noted that the concentration and temperature profiles increase by expanding values of thermophoresis parameter also the temperature increase by increment in Brownian motion while a reverse result obtained on concentration profile. Also, the influence of Casson fluid, thermophoresis and Brownian motion on skin friction, Sherwood number and Nusselt number is noted and check the behavior of these numbers by increasing or decreasing values of thermophoresis parameter, Casson fluid parameter and Brownian motion. And, calculated that by increment in thermophoresis and Brownian motion, the Nusselt number decreases. The graphs of temperature profile, velocity profile and concentration profile are drawn and also other results are tabulated.
Object Detection Using Capsule Neural Network: An Overview
Authors: Mahdi Eman Turki , Al-Barzinji Shokhan M. , Awad Waleed Kareem
Published: October 2024

Appropriate remedies for tasks like language translation, object identification, object segmentation, picture recognition, and natural language processing are needed for today's computer vision tasks. This paper explores the use of Capsule neural Networks (Caps Nets) in object identification and offers a thorough analysis of their developments and uses. It presents an analysis of the transformative impact of Caps Nets on object identification tasks. This distinctive the architecture of neural network is presented as an alternative to convolutional neural networks (CNNs). The paper highlights that how Caps Nets are unique in capturing spatial correlations and hierarchical patterns in visualization data by analyzing the fundamental ideas of the technology.  Additionally, it demonstrates how Caps net out perform CNNs in terms of generalization, interpretability, and last in the resistance to spatial distortions, confirming their goodness at object detection. By integrating the Caps networks with the latest scientific findings and advances, the paper shows the current status and potential future paths for object detection methods that use this leading neural network architecture.
Computational and experimental performance analysis of a runner for gravitational water vortex power plant
Authors:   , Faraji Adam
Published: October 2024

Energy generation through water is one of the most economic sources of power. On the other hand, isolated and rural communities can both benefit from using micro-hydropower to power their homes. The gravitational water vortex power plant (GWVPP) has recently attracted interest due to its low initial investment, straightforward design, simple maintenance requirements, and low head requirements. However, the technology suffers a low performance caused by unoptimised parameters of its crucial components, such as the GWVPP runner. This study presents the results of numerical simulation and experimental approaches for the GWVPP runner. To understand how each factor affected the efficiency of GWVPP runner, four parameters (hub-blade angle, speed, runner profile, and number of blades) were examined. The (custom) design tool of Design-Optimal Expert was used to create twenty-four (24) experimental runs. Commercial Computational Fluid Dynamics (CFD) software, specifically Ansys CFX, was employed to simulate these runs and assess the system's efficiency. R2 values of 0.9507 and 0.9603 for flat and curved profiles indicate a better model fitting to actual data. Additionally, the numerical analysis led to a 3.65% improvement in the efficiency of the curved blade profile runner, while the flat runner profile's efficiency increased by 1.69% compared to non-optimized scenarios. The validation process revealed that the comparison between the numerical investigation and experimental results demonstrated a promising agreement, further supporting the accuracy of the numerical analysis. The experimental finding depicts that the efficiency was 9.84 - 25.35%, torque was 0.08 – 0.23 Nm, and the output power was 2.96 – 7.33 W. Furthermore, the results portray the numerical efficiency to be slightly greater by 0.54% than the experimental efficiency, presumably because the frictional forces were not incorporated in the numerical analysis. Additionally, the exergy analysis of the system revealed a value of 43.58%. The power error range was between 0.1 and 0.5 W, with a low variation in the data points. The torque error range was relatively lower than the power error range, ranging from 0.01 to 0.03 Nm, and the torque measurements showed a low variation in the data points. The efficiency error range was generally low, with most errors falling within the 1.3-3.1% range. Therefore, the GWVPP runner efficiency can be improved significantly through numerical analysis and experimental studies. Also, based on the above results, the GWVPP runner and GWVPP system are recommended for energy generation in low-head and flowrate water sources.
Kepuasan Guru dalam Penggunaan E-Rapor di SMA Negeri 1 Pancung Soal Kabupaten Pesisir Selatan
Authors: Maharani Inchi , Ahmad Sabandi
Published: October 2024

E-report is a web-based software for compiling reports on student competency achievements by educational unit level developed by the SMA curriculum sub-division. By using the e-report application, it can make it easier for teachers to input the grades obtained by students. The purpose of this study is to determine the level of satisfaction of e-Rapor users with the End-User Computing Satisfaction (EUCS) model as seen from the five variables, namely content, accuracy, form, ease of use, and timeliness. This research is a quantitative descriptive research, with a population of 84 sample teachers in this study using a non-probability sampling technique, namely saturated samples so that all populations are used as samples. Using the EUCS method, this research found that teacher satisfaction with the e-report at Pancung Soal 1 Public Senior High School (SMA) Pesisir Selatan regency was satisfied with the percentage of content 80.57%, accuracy 80.95% , format 80.05%, ease of use 80.00%, timeliness 80.60%
Pengaruh Iklim Sekolah terhadap Kedisiplinan Siswa SMKN 9 Padang
Authors: Zahro Yulia Mu'arrifatuz , Hadiyanto  , Anisah  , Widiawati
Published: October 2024

Penelitian ini dilatarbelakangi rendahnya kedisiplinan siswa di SMKN 9 Padang. Penelitian ini bertujuan untuk membuktikan pengaruh iklim sekolah terhadap kedisiplinan siswa SMKN 9 Padang dan mengkaji seberapa besar iklim sekolah mempengaruhi kedisiplinan siswa. Penelitian ini menggunakan metode kuantitatif korelasional dengan analisa regresi linear sederhana dalam menjawab hipotesis. Data dikumpulkan menggunakan angket atau kuesioner, jumlah populasinya 819 siswa, dimana teknik pengambilan sampel adalah proportional stratified random sampling yang disebarkan kepada 107 siswa. Iklim sekolah yang baik terbukti memberikan pengaruh yang positif terhadap kedisiplinan siswa. Hal ini dapat disimpulkan bahwa semakin baik iklim sekolah, semakin tinggi pula tingkat kedisiplinan siswa di SMKN 9 Padang. Untuk meningkatkan kondusifitas iklim sekolah di SMKN 9 Padang adalah dengan cara meningkatkan inovasi. Untuk meningkatkan kedisiplinan siswa dalam hal disiplin dalam mengikuti pelajaran di sekolah adalah guru harus berperan sebagai contoh yang baik bagi para siswanya dan guru harus berusaha membiasakan siswa agar menjaga suasana yang harmonis di kelas.
Identifikasi Kesulitan Guru Dalam Implementasi Kurikulum Merdeka Di SMK Negeri Se-Kecamatan Padang Barat
Authors: Rahmah Mutia , Nelfia Adi  , Hadiyanto  , Achyar Novriyanti
Published: October 2024

Penelitian ini dilatar belakangi oleh permasalahan-permasalahan yang ditemukan bahwa adanya kesulitan guru dalam implementasi kurikulum merdeka di SMK Negeri se-Kecamatan Padang Barat. Penelitian ini bertujuan untuk menggali informasi tentang kesulitan guru dalam implementasi kurikulum merdeka di SMK Negeri se-Kecamatan Padang Barat yang ditinjau dari aspek 1) perencanaan pembelajaran, 2) pelaksanaan pembelajaran, 3) penilaian pembelajaran. Jenis penelitian ini bersifat deskriptif kuantitatif. Populasi penelitian adalah guru di SMK Negeri se-Kecamatan Padang Barat yang berjumlah 170 orang . Diambil sampel sebanyak 66 orang menggunakan teknik proportional stratified random sampling. Instrumen pengumpulan data adalah angket model Skala Likert dengan lima pilihan jawaban yaitu Sangat Sulit (SS), Sulit (S), Cukup Sulit (CS), Mudah (M), Sangat Mudah (SM). Angket penelitian ini telah diuji cobakan kepada 20 orang diluar sampel dalam populasi dan diolah menggunakan program SPSS 27, dengan validitas 0,444, 45 item dinyatakan valid dan reliabel. Selanjutnya data diolah dengan rumus rata-rata (mean). Hasil penelitian didapat bahwa identifikasi kesulitan guru dalam implementasi kurikulum merdeka di SMK Negeri se-Kecamatan Padang Barat pada aspek 1) perencanaan pembelajaran dengan skor rata-rata 3,56 berada pada kategori cukup sulit, 2) pelaksanaan pembelajaran dengan skor rata-rata 3,48 berada pada kategori cukup sulit, 3) penilaian pembelajaran dengan skor rata-rata 3,68 berada pada kategori sulit. Dengan demikian dapat disimpulkan bahwa identifikasi kesulitan guru dalam implementasi kurikulum merdeka di SMK Negeri se-Kecamatan Padang Barat berada pada kategori cukup sulit dengan skor rata-rata 3,58.
Persepsi Warga Sekolah Tentang Pelaksanaan Pendidikan Karakter di SMK Negeri se-Kecamatan Padang Timur
Authors: Putri Amanda Danissa , Hadiyanto  , Rusdinal  , Hanif Al Kadri
Published: October 2024

Penelitian ini dilatar belakangi oleh rendahnya persepsi warga sekolah tentang pelaksanaan pendidikan karakter di SMK Negeri Se-Kecamatan Padang Timur. Penelitian ini bertujuan untuk mengetahui seberapa tinggi persepsi warga sekolah tentang pelaksanaan pendidikan karakter di SMK Negeri Se-Kecamatan Padang Timur yang ditinjau dari indikator pembelajaran pada setiap mata pelajaran, kegiatan ekstrakurikuler dan ko-kurikuler, pembiasaan, dan keteladanan . Jenis penelitian yang digunakan yaitu penelitian deskriptif kualitatif, yang memiliki populasi sebanyak 2.512 orang siswa, 194 orang guru, dan 49 tenaga administrasi sekolah. Sampel yang digunakan sebanyak 99 orang siswa, 64 guru dan 39 tenaga administrasi sekolah. Dalam penelitian ini instrumen yang digunakan adalah angket dengan menggunakan skala likert dengan 48 item untuk siswa, 48 item untuk guru dan 24 item untuk tenaga administrasi sekolah. Setelah dilaksanakan uji coba dan analisis, maka 45 butir angket siswa valid, 46 butir angket guru valid, dan 24 butir angket TAS dinyatakan valid. Dari hasil pengolahan data diperoleh hasil bahwa persepsi warga sekolah tentang pelaksanaan pendidikan karakter di SMK Negeri Se-Kecamatan Padang Timur pada indikator 1) pembelajaran pada setiap mata pelajaran dengan rata-rata 4,35 pada kategori BAIK, 2) kegiatan ekstrakurikuler dan ko-kurikuler dengan rata-rata 4,34 pada kategori BAIK, 3) pembiasaan dengan rata-rata 4,34 pada kategori BAIK, 4) keteladanan dengan rata-rata 4,14 yang berada pada kategori baik. Dengan demikian disimpulkan bahwa persepsi warga sekolah tentang pelaksanaan pendidikan karakter di SMK Negeri Se-Kecamatan Padang Timur berada pada kategori BAIK dengan skor rata-rata keseluruhan 4.29. Dari hasil tersebut maka penelitian menyarankan agar persepsi warga sekolah tentang pelaksanaan karakter pendidikan perlu dipertahankan serta dapat ditingkatkan untuk menjadi lebih baik lagi.
Kesiapan Guru dalam Implementasi Kurikulum Merdeka di SMKN Se-Kota Pariaman
Authors: Lestari Anggun Mawar , Gistituati Nurhizrah
Published: October 2024

Penelitian ini berdasarkan observasi penulis mengenai Kesiapan Guru dalam Menerapkan Kurikulum Mandiri di SMK Se-Kota Pariaman dengan tujuan untuk menggali informasi tentang kesiapan guru dalam merencanakan, melaksanakan dan mengevaluasi pembelajaran berbasis kurikulum mandiri ditinjau dari aspek keguruan. pengetahuan, pemahaman dan keterampilan. Jenis penelitian ini adalah deskriptif kuantitatif. Populasi penelitian ini adalah seluruh guru di SMKN se-Kota Pariaman yang berjumlah 241 guru dengan sampel penelitian sebanyak 153 guru yang diambil berdasarkan teknik Stratified Proportional Random Sampling. Sebelum digunakan untuk penelitian, kuesioner diuji validitas dan reliabilitasnya dengan bantuan program SPSS versi 29. Teknik analisis datanya menggunakan rumus rata-rata (mean). Hasil penelitian menunjukkan kesiapan guru dalam melaksanakan kurikulum mandiri ditinjau dari (1) perencanaan pembelajaran dengan rata-rata 3,63 dan TCR (72,6%) mempunyai kriteria cukup baik, (2) pelaksanaan pembelajaran dengan rata-rata 3,82 dan TCR (76,4%) mempunyai kriteria cukup baik, (3) evaluasi pembelajaran dengan rata-rata 3,75 dan TCR (75%) mempunyai kriteria cukup baik.
Estudio de las inundaciones en la ciudad de Morelia Michoacán, México
Authors: Arreygue Rocha E. , Pastor Gómez N. , Chávez Negrete C. , Alarcón Ibarra J.
Published: October 2024

This paper focuses on the analysis of the degree of flooding vulnerability to which the city of Morelia is usually exposed to. Our concern arises due to the fact that every rainy season several neighborhoods in Morelia tend to get flooded, especially in the northern part of the city which the “Rio Grande” runs through. The southeastern part of the city, through which the “Rio Chiquito” reaches into, is often affected as well. Heavy rainfall in the upper part of the basin causes great flows, which in turn endanger the neighborhoods that are located near these rivers. The runoff of both rivers, “Grande” and “Chiquito”, was analyzed in order to create a computer-generated model using HEC-RAS to evaluate the displacement of their free surface waters under permanent moving conditions in each river as well as the geometric conditions of their transversal sections. The amount of water flow was also measured taking into consideration the bridges that rest across them without overlooking the geometry of such structures. Having gathered all these data, the most vulnerable spots were identified and some simple preventive measures and actions were proposed. Such measures and actions will help diminish or even eliminate flooding risks for the settlements nearby these two main innercity water streams.
Utilización de imágenes de temperatura radiativa e índice de vegetación mejorado para el estudio de las condiciones hídricas en la región pampeana
Authors: Holzman Mauro , Rivas Raúl , Piccolo Maria Cintia
Published: October 2024

En este trabajo se avalúan los efectos de dos eventos ENOS en la disponibilidad de agua en el suelo de la región pampeanaargentina-uruguaya a través del índice Temperature Vegetation Dryness Index (TVDI). En 3 áreas no cultivadas, ubicadasen las provincias de La Pampa y Buenos Aires en Argentina y en el departamento de Maldonado en Uruguay se analizaronimágenes satelitales del sensor MODIS de temperatura de superficie (LST) e índice de vegetación mejorado (EVI),composición de 8 y 16 días respectivamente, de 67,75 ha de resolución. Los períodos de análisis fueron seleccionados a partirdel índice Niño 3.4 de anomalías de temperatura de la superficie del mar y comprendieron los meses de agosto-febrero de2007-2008 (La Niña) y 2009-2010 (El Niño). El EVI mostró valores más bajos en la provincia de Buenos Aires y enUruguay para el periodo 2007-2008 que en 2009-2010, a partir de octubre-noviembre; la LST fue menor en Uruguaypara el periodo 2009-2010 que en 2007-2008. El TVDI mostró una leve tendencia a condiciones de menor disponibilidadde agua en el suelo en Uruguay durante la etapa madura de La Niña. Se propone al TVDI como una herramienta paraevaluar las teleconexiones de ENOS en la disponibilidad de agua en el suelo de la región pampeana, con el potencial deampliar su utilización en el estudio, planificación y gestión de múltiples actividades o aspectos relacionados con el ciclohidrológico a escala regional.
Efecto amplificador del suelo en la exposición al peligro sísmico de Tolhuin, Tierra del Fuego, Argentina
Authors: Abascal Liliana , Gónzalez Bonorino Gustavo , Bujalesky Gustavo G. , Coto Claudio
Published: October 2024

The island of Tierra del Fuego (Argentina-Chile) lies in aregion of intense seismic activity due to the interaction of theAntarctica, Scotia and South American tectonic plates. Twoseismotectonic zones in this region: the subduction trench insouthernmost Chile and the Magallanes-Fagnano fault, that crosses the island from east to west, represent a seismic hazard for the island population. Focusing on the Argentine sector of Tierra del Fuego, however, the greater threat comes from the Magallanes-Fagnano fault, which has generated seismic events in historical times of magnitude M=8. Tolhuin, a small population of 3000 inhabitants undergoing fast growth, is located 1 km from the trace of the Magallanes-Fagnano fault. Buildings in Tolhuin largely have not had seismic safety controls required by the INPRES (the Argentine seismic building code regulator). In addition, the urbanization of Tolhuin rests on a thick package of Quaternary glacigenic sediments with the potential for amplifying seismic vibrations by a factor of more than 2, judging from a simulation with EERA (Equivalent-linear Earthquake Analyses). Applying the Risk Assessment Tools for Diagnosis of Urban Areas against Seismic Disasters (RADIUS) methodology, supported by the United Nations, this study analyses the seismic vulnerability of constructions in Tolhuin under the effect of a Maximum Considered Earthquake of magnitude M=8.0. The results show the importance of considering the probable local amplification through site effects. This study constitutes a first effort to provide the Argentine province of Tierra del Fuego with cartographic and conceptual tools useful in planning urban growth taking into consideration seismic hazard.
Bases metodológicas para la cartografía de riesgos naturales en zonas costeras
Authors: González de Vallejos L. , Seisdedos J. , Mulas J. , Rodriguez Franco J.A. , Gracia F. , Garrote J. , Del Rio L.
Published: October 2024

A pesar de la importancia e implicaciones de los riesgos asociados a la dinámica litoral en las zonas costeras, son escasos los trabajos centrados en su estudio y cartografía a escala regional, de manera sistemática e integrada. En este trabajo se presentan los fundamentos de una metodología basada en el análisis detallado de los riesgos naturales que pueden afectar al litoral: inundaciones, erosión, subida del nivel del mar, tsunamis, movimientos de ladera, etc., y en el estudio y cartografía de los factores implicados en su ocurrencia (geomorfología litoral, procesos litorales, sucesos históricos, actuaciones humanas…). Estos factores y riesgos se evalúan e integran para la elaboración de mapas finales en los que se presenta la valoración tanto de cada riesgo de forma individual, como del conjunto de los mismos. Se emplea un sistema de representación cartográfica en franjas paralelas a la costa que facilita el reconocimiento e interpretación de las características del litoral estudiado y los riesgos asociados.
Metodologias para a análise de lineamentos geo-estruturais a partir de imagens LANDSAT e SPOT: o exemplo da região entre Vigo e Viana do Castelo (NW da Península Ibérica)
Authors: Pinho R. , Gomes A. , Pérez - Alberti A. , Chaminé H. I.
Published: October 2024

O presente estudo tem como objectivo a apresentação de metodologias para a detecção remota de lineamentos geo-estruturaisa partir de imagens dos satélites LANDSAT e SPOT. Será dada ênfase aos lineamentos com potencial interessegeomorfológico no NW de Portugal Continental e no SW da Galiza (Espanha), através da utilização combinada de dadosespectrais de detecção remota espacial, dos sensores ETM+ e HRVIR (satélites Landsat 7 e SPOT 4, respectivamente), bemcomo de dados altimétricos. A interpretação visual dos dados espectrais foi aperfeiçoada através da aplicação de técnicas deprocessamento digital, que consistiram na melhoria do contraste tonal por expansão linear do histograma e na aplicação deum filtro espacial de realce de contornos não direccional. Foram utilizadas várias composições coloridas RGB para aidentificação de lineamentos estruturais e compararam-se as potencialidades e fragilidades exibidas pela interpretaçãomorfoestrutural que as imagens de satélite permitiram evidenciar para a área de estudo. A identificação deste tipo deestruturas culminou na elaboração de uma cartografia de lineamentos geo-estruturais, que integrou os elementos linearesvectorizados sobre as imagens de satélite e sobre o modelo digitalde terreno (MDT).
Antimicrobial activity of some vinyl-triazole derivatives
Authors: Lupascu Galina , Gavzer Svetlana , Cristea Nicolae , Lupascu Lucian , Stingaci Eughenia , Zveaghintseva Marina , Pogrebnoi Serghei , Macaev Fliur
Published: October 2024

Mycoses and bacterioses in agricultural crops are very devastating, bringing enormous economic damage through direct crop losses and compromising it due to pathogen toxin pollution, which makes them toxic to humans and animals. Chemical plant protection procedures often become ineffective due to the easy adaptation of causative agents to pesticides, the reduction of the protective effect under the influence of unfavorable conditions, toxicity, ecological consequences. Starting from this, the aim of the research consisted in the identification of new compounds with antifungal (Fusarium avenaceum) and antibacterial (Erwinia amilovora, E. carotovora, Xanthomonas campestris) activity in in vitro conditions for further utilization in plant protection measures. Based on the growth of fungal colonies and minimum bactericidal concentration, it was found that vinyl-triazole derivatives EPS-869, EPS-877, EPS-880, EPS-892, EPS-165 (0,00125; 0,0025; 0,005; 0, 01%) shows high antimicrobial activity, the phenomenon being due in particular to the compound factor.
Assessment of crown height-diameter distribution in pedunculate oak (Quercus Robur) and the performance of regression models
Authors: Cuza Petru
Published: October 2024

In the stands of pedunculate oak (Quercus robur) located in the north, center, and south of the Republic of Moldova, a study focusing on the relationship between crown height and diameter was conducted. The analysis of the trees height-diameter crown distribution revealed an increase in the complexity of the stand structure along the north-south ecological gradient. Simultaneously, within these distributions, phenotypic variability in the height-diameter characteristic of tree crowns was observed. The statistical fit of the relationship between tree crown height and diameter was assessed by analyzing 25 regression models and selecting those that demonstrated good performance for the data describing the relationship. A more precise adjustment of the data was identified as a function of increasing complexity in the distribution of the investigated feature. The best results in this context were obtained for the experimental data regarding the relationship between the height and crown diameter of the trees in the southern area, in the Baimaclia Forest District, compared to the other areas.
The influence of nutrients in relation to the hypersthenic type of constitution on the activity of proteolitic and amylolytic enzymes
Authors: Babileva Anastasia , Strutinschi Tudor , Mereuta Ion
Published: October 2024

Personalized nutrition systems development will be the main focus of personalized medicine in the future. For individualization, the paper outlines the fundamental principles of sanogenic nutrition according to the type of constitution. For the hypersthenic constitution, four variants of food rations with different caloric percentages were created. In the research carried out, the characteristics of the activity of amylolytic enzymes, proteolytic enzymes of the small intestine, pancreas and stomach peptidases were identified in animals with hypersthenic constitution, when nutritional factors are influenced. The collected data show that in animals with a low level of stress reactivity, the activity of digestive enzymes depends on the macronutrients of the food ration composition and the caloric structure of the food ration. It should also be noted that, compared to representatives of other types of constitution, the enzyme systems of the digestive organs are more resistant to changes in the caloric structure of the food ration in representatives of the hypersthenic type of constitution.
Pathogen inactivation mechanism with application in implantology
Authors: Munteanu Ion
Published: October 2024

At the present time, a special attention is given to the large-scale using of implant treatments. Modern implants have a good rate of success, reliability and longevity, they are minimally invasive, delicate and resistant. Due to the development of some forms of pathogens at the implant-tissue contact, there are situations of poor adhesion of the implant surface to the organic tissue. The application of chemical or surgical methods in such situations are difficult. But in order to solve these phenomena, new techniques are needed to be implemented. That why it is proposed to apply ultraviolet radiation on the optical system (photonic crystals and photonic fiber crystals) of modern implants to treat the infection that can appear on the surface between the implant and the cellular tissue in the process of poor adhesion. These combinations of periodic quartz optical structures are deposited and regularly arranged (set of fibers or spheres) on the implant surface, which can be used as a large volume dispersion of ultraviolet C radiation to treat the infection at the surface between the implant and adhesion tissue. The proposed periodic optical structure contributes considerably to increasing the adhesion of the implant to the cellular tissue, thus stimulating cellular growth between the elements and the implant.
Spatial learning and memory of white rats in the eight-arm radial maze under the influence of the biomass of Streptomycetes isolated from the soils of the Republic of Moldova
Authors: Garbuzneac Anastasia , Septitchi Vladimir , Leorda Ana , Burtseva Svetlana , Birsa Maxim
Published: October 2024

In experiments on white rats of both sexes, it was established that long-term consumption of biomass of streptomycetes of the Streptomyces massasporeus CNMN-06 strains and, to a lesser extent, Streptomyces fradiae CNMNAc11, isolated from the soils of the Republic of Moldova, significantly stimulates the learning process in the eightarm radial maze and promotes facilitating the development of working and activation of long-term spatial memory, which shows the promise of further research with the aim of isolating and identifying substances with neuroprotective and nootropic properties from the biomass of these strains of streptomycetes. Sex differences were found in the learning of white rats in the radial eight-arm maze and the activation of working spatial memory, which may indicate the presence of sexual dimorphism in the brain areas responsible for spatial learning.
Flora of the riverside-water side of the lower section of the Nistru river and its tributaries on the territory of the Republic of Moldova
Authors: Erosencova Viktoria
Published: October 2024

The studied section of the river. The Dniester and its tributaries are represented by 113 species, 103 genera from 55 families of higher plants (Magnoliophyta). The greatest diversity is found in the Asteraceae (21 species) and Poaceae (8 species) families. About 1/3 of the total number of species are represented by the Eurasian element. The spontaneous element of the studied flora is represented by 54 species, and the ruderal element by 36 species. Invasive elements are represented by the species Ailanthus altissima (Mill.) Swingle, Acer negundo L. Amorpha fruticosa L., Ambrosia artemisiifolia L., Grindelia squarrosa Willd.. It was also carried out for all species: determination of the percentage ratio of life forms, biological indices, ecological groups in relation to humidity, the ratio of plant species by origin, the distribution of indicator species by nitrogen (N) in percentage terms and the ratio of plant species in relation to the category trophicity.
The impact of implementing the biodiversity assessment mechanism - case study Republic of Moldova
Authors: Punga Irina
Published: October 2024

In an era of constant change and adaptation to environmental challenges, biodiversity conservation is becoming a global priority. The globally implemented biodiversity assessment mechanism plays a crucial role in this fight. Aware of the importance of preserving natural diversity, Moldova has adopted the biodiversity assessment mechanism as an integral part of its international environmental commitments. This initiative, which has been incorporated into national legislation, reflects a growing global concern to maintain ecological balance and conserve natural resources for the benefit of future generations. In order to identify and manage potential threats to biodiversity and to focus assessment efforts on activities that pose a significant risk to biodiversity, we propose an analysis of the scope of the biodiversity assessment mechanism.
The influence of the Reglalg biostimulator and micro elements on the photosynthetic productivity of native and foreign plum varieties
Authors: Gisca Alina
Published: October 2024

The research carried out with plum plants under controlled conditions (lysimeters, Institute of Genetics, Physiology and Plant Protection) with varieties of local and foreign selection in 2023 revealed the stimulatory effect as a result of treatments with solutions containing Reglalg and a mixture of trace elements - B, Zn, Mn, Mo regarding the formation and activity of the photosynthetic apparatus that contributed to the realization of the production potential of plants. The work in this direction with plum plants for six years aims to highlight the most informative indicators of the pigment background and photosynthetic activity of different plum varieties under the exogenous influence of biologically active substances and microelements.
Coordination compounds of Cu(II) with n-hexyl-2-[(pyridin-2-yl)methylidene]hydrazine-1-carbothioamide: design, synthesis, evaluation of antimicrobial and antifungal properties
Authors: Pintea Aliona , Ciursin Andrei , Rusnac Roman , Gulea Aurelian
Published: October 2024

The development of antibiotic resistance, new pandemics and the rise of cancer cases are among the main challenges for modern society. Solving these problems is directly linked to the synthesis of new substances with the necessary biological effects. A big perspective presents the class of substances called thiosemicarbazones. Their representatives are already used in the pharmaceutical industry, for example Ambazone or Triapine. In general, thiosemicarbazones exhibit a wide range of useful biological activities, including antibacterial, antifungal and anticancer. It is known that coordination of thiosemicarbazones in many cases leads to enhanced biological activity. In this work, 5 copper (II) coordinative compounds based on a thiosemicarbazone have been synthesized. Antimicrobial and antifungal properties of the synthesized substances were evaluated.
Methodological approaches in the study of hydric stress in plants
Authors: Duca Maria , Clapco Steliana , Mutu Ana , Martea Rodica
Published: October 2024

Drought significantly affects plant growth and development, having a negative impact on the productivity of crops and, respectively, on food security worldwide. To predict the response of agricultural crops to future global warming and water deficit and to develop effective risk management strategies, there is a need to understand, at various levels of organization, the processes that determine tolerance to adverse environments. In this context it is important to use appropriate models of hydric stress induction and response assessment. The paper presents a brief description of the methodological approaches used in plant drought stress studies (field, greenhouse, laboratory experiments; experimental models using different types of substrates; distinct methods to induce water deficit), reflects their particularities, advantages and limitations and highlights the importance of combining and adapting methods of analysis according to the studied species, the environment and the research objectives.
The composition of trees from Straseni forest compared with the productive potential
Authors: Grati Vladislav , Bejan Iurie , Grati Sabina
Published: October 2024

In the present article it is studied the composition of stands by species and their correspondence with the productive potential offered, in the conditions of the central area of the Republic of Moldova, located in the Straseni district, Straseni forest entity. The most valuable natural and fundamental trees were preserved here. The main species is present – the Quercus petrea, followed by the Quercus robur. Deviation of current compositions from optimal ones is the resoult of of poor forest management in the past. Accurately establishing the reason for the deviation from the optimal compositions will ensure the comparisons also made according to climatic conditions. The species structure of the volume reflects the ability to capitalize on the natural conditions of the territory where it is installed.
Caracterization of the edaphic factor in which within the Straseni forestry entity
Authors: Grati Vladislav , Bejan Iurie , Nagacevschi Tatiana , Bunduc Tatiana
Published: October 2024

The article presents a comparative study of the vegetation conditions (geomorphological aspects, soils) for the central area of the Republic of Moldova (RM) also called „Central Forests”. The prolonged droughts require a different way of managing both forestry and agriculture. Through this study, we aim to identify comparatively the edaphic conditions in 1985 and 2021, how they evolved over time, but also the capacity of the trees to accommodate over time. The forest soils of the Republic of Moldova have been studied less, with the exception of those in the middle of the Republic of Moldova, which also protected areas, have been more often visited with scientific research (A. Ursu 2005).
The biological self-purification capacity of natural and waste waters by assessing the ratio between biodegradable and toxic pollutants
Authors: Duca Gheorghe , Sandu Maria , Gladchi Viorica , Lis Angela , Blonschi Vladislav
Published: October 2024

The study emphasizes the significant impact of chemical pollution in the aquatic environment, originating from various sources - continuous, intermittent, and accidental - with particular focus on small rivers in the Republic of Moldova. The article applies the methodology for evaluating the self-purification capacity of natural and waste waters using parameters as biochemical oxygen demand (BOD5) and chemical oxygen demand (CODCr). These parameters are essential for assessing the contribution of pollutant biodegradation processes in natural and waste waters. The classification of waters into five levels of self-purification, from efficient to impossible, is based on the ratio BOD5/CODCr. This paper emphasizes the need to comply with the normative requirements for the treatment of wastewater from different economic sectors. Monitoring compliance with these requirements can be achieved by calculating the self-purification capacity using the BOD5/CODCr ratio.
Influence of vitamin B12 on chemical self-purification processes of water systems
Authors: Cisteacov Maxim , Blonschi Vladislav , Gladchi Viorica
Published: October 2024

This article describes the participation of vitamin B12 in the processes of chemical self-purification of water. The experiment was carried out in laboratory conditions by simulating systems. It was found that the pharmaceutical form of vitamin B12 (cyanocobalamin) undergoes direct photolysis (k=(2.20±0.11)·10-4s-1) transforming into the hydroxocobalamin form. Using an indirect method for determining the intensity of radical processes - inhibitory ability, it was determined that in natural waters vitamin B12 will exhibit reducing properties, leading to a decrease in oxidative equivalents, but in the presence of other substances with a more pronounced reducing character, for example thiols, this vitamin will exhibit catalytic properties in the process of their oxidation. This is confirmed by the values of the inhibitory ability, which in the system B12-PNDMA-H2O2-hν (Σki[Si]=1,6∙107 s-1) is 3,4 times greater than in the system B12-Cys-PNDMA-H2O2-hν (Σki[Si]=4,7∙106 s-1).
Exploring the antioxidant activity of 1-(piperidin-1-yl) propane-1,2-dione 4-phenylthiosemicarbazone and 3d metal coordination compounds with this ligand
Authors: Graur Ianina , Maxim Mihail , Graur Vasilii , Tsapkov Victor , Gulea Aurelian , Garbuz Olga
Published: October 2024

The new 1-(piperidin-1-yl)propane-1,2-dione 4-phenylthiosemicarbazone (HL) and its 7 coordination compounds [Cu(L)X] (X = Br- (I); Cl- (II); NO3 - (III); CH3COO- (IV); Cl2CHCOO- (V)), [Co(L)2]NO3 (VI), [Fe(L)2]NO3 (VII) have been synthesized and characterized by elemental analysis, FTIR, 1H, 13C NMR spectra and molar electric conductibility. For the obtained compounds it was studied the antioxidant activity towards ABTS•+ radical cation. Uncoordinated 4-phenylthiosemicarbazone HL is the most active one with IC50 14.1 μM. Its activity is higher than that of Trolox which is used in medicine as an antioxidant. Among all the synthesized coordination compounds, the iron(III) complex VII showed the greatest activity. The antioxidant activity of metal complexes is influenced by the anion and the nature of the central metal atom.
Total polyphenol content and antioxidant activity of ethanolic propolis extracts
Authors: Grigoraș Carolina , Gonta Maria
Published: October 2024

Propolis is a beekeeping by-product with a high content of polyphenols that manifests antioxidant action. In this article was conducted the comparative study of the obtained results regarding the total polyphenol content of propolis extracts and their antioxidant activity depending on several factors: solvent concentration, extraction method. The total polyphenol content was determined by the Folin-Ciocalteu method and the antioxidant activity by the DPPH method. The analysis of the data revealed that the total polyphenol content and antioxidant activity is largely depended by the solvent concentration, optimal for obtaining ethanolic extracts of propolis with a high content of polyphenols, being ethyl alcohol with a concentration of 70%.
Determination of Residual Pesticides in Selected Grains, Fruits and Vegetables Commercially Sold in Eke Awka Market, Awka, Anambra State, Nigeria
Authors:   Department of Biochemistry, Faculty of Natural Science Chukwuemeka Odumegwu Ojukwu University, Uli, Anambra State, Nigeria, Dike-Iheanyi Evelyn Ifeyinwa , Ifemeje J.C. ,   Department of Biochemistry, Faculty of Natural Science Chukwuemeka Odumegwu Ojukwu University, Uli, Anambra State, Nigeria, Okoye Chinenye Justy, ,   Department of Biochemistry, Faculty of Natural Science Chukwuemeka Odumegwu Ojukwu University, Uli, Anambra State, Nigeria, Okoroigwe F.C ,   Department of Biochemistry, Faculty of Natural Science Chukwuemeka Odumegwu Ojukwu University, Uli, Anambra State, Nigeria, Ezeanyanwu V.C. ,   Department of Biochemistry, Faculty of Natural Science Chukwuemeka Odumegwu Ojukwu University, Uli, Anambra State, Nigeria
Published: October 2024

Six samples from cucumber (Cucumis sativus), apple (Malus domestica), cabbage (Brassica oleracea), Tiger nuts (Cyperus esculentus), Beans (Phaseolus vulgaris), Green peas (Pisum sativum) were purchased from Eke Awka market, Awka in Anambra state, and were evaluated for their residual pesticides. Estimation of Pesticides residues were carried out using American Public Health Association Method. The result of the pesticide residues analysis showed that all the samples contain pesticide residues but the most prevalent one was Isopropylamine. The pesticide residues in beans have highest concentration of Isopropylamine (0.094 0.001%), followed by cucumber (0.058 0.01%) and then apple (0.040 0.001%) while the least was cabbage (0.023 0.001%). Among all samples studied, beans have the highest level of pesticide residues (0.245 mg/kg) followed by Apple (0.206 mg/kg) and cucumber (0.178 mg/kg) and least was cabbage (0.121mg/kg). Among all the pesticides studied, lindane was above maximum residue limit (0.01 mg/kg) in apple and tiger nut (0.048 0.001%) and 0.043 0.001%) respectively Conclusion: Pesticide residues in most of the samples analyzed were above limits which portends danger. There is urgent need to for action by policy makers and farmers respectively. Keywords: Pesticide residue, Grains, Fruits, Vegetables
Determination of some antioxidant vitamins and trace elements in selected grains, fruits and vegetables commercially sold in Eke Awka market, Awka, Anambra State, Nigeria
Authors: Dike-Iheanyi Evelyn Ifeyinwa , Okoye Chinenye Justy , Ezeanyanwu V. C , Okoroigwe F.C. , Ifemeje J.C
Published: October 2024

Six samples from cucumber (Cucumis sativus), apple (Malus domestica), cabbage (Brassica oleracea), Tiger nuts (Cyperus esculentus), Beans (Phaseolus vulgaris), Green peas (Pisum sativum) were purchased from Eke Awka market, Awka in Anambra state, and evaluated for some antioxidant vitamins using standard method. The concentration of the Trace metals namely Fe,Zn, Cu, Mn, Se, Pb, Cd and Ni were assessed using Atomic Absorption Spectrophotometer. The concentration of each trace metal in the sample was determined and compared with the permissible levels set by the Food and Agricultural Organization/World Health Organization. Antioxidant vitamins results showed that cabbage has the highest Vitamin A level, green peas the highest Vitamin C level while tigernuts has the highest Vitamin E level. The result of trace metal analysis showed that the concentration of Fe, Zn, Cu, Mn, Se, Pb, Cd and Ni in the six selected samples were lower or within the recommended permissible limit. This indicates that the samples are nontoxic and also safe for human consumption because they are within the acceptable limit that is not dangerous to health as recommended by World Health Organization /Food and Agriculture Organization. Keywords: Trace element, Antioxidant vitamins, Atomic Absorption Spectrophotometer, Grains, Fruits, Vegetables