bluuebunny/crossref_metadata_2025_split huggingface dataset:
IMPROVEMENT OF PUBLIC ADMINISTRATION OF THE CROP INDUSTRY
Authors: ТИТОВА Е.П. ТИТОВА Е.П. , ОРЕХОВА М.С. ОРЕХОВА М.С. , ЧЕСЕБИЕВ А.Ю. ЧЕСЕБИЕВ А.Ю. 
Published: July 2024

В статье рассмотрены направления инновационного развития растениеводства. Представлены три этапа развития освоения инноваций отраслью растениеводства. Проведена оценка наукоёмких агротехнологий в адаптивно-ландшафтных системах земледелия Краснодарского края. Дана оценка предпосевной электрофизической обработки семян. Результаты анализа могут быть использованы в процессах разработки и реализации политики регулирования сельскохозяйственной активности в системах различного уровня.
The article considers the directions of innovative development of crop production. Three stages of the development of the development of innovations by the crop industry are presented. The assessment of scienceintensive agricultural technologies in adaptive-landscape systems of agriculture in the Krasnodar Territory has been carried out. The evaluation of presowing electrophysical treatment of seeds is given. The results of the analysis can be used in the development and implementation of policies for regulating agricultural activity in systems of various levels.
Problems of removing heavy metals salts from wastewater: options and solutions
Authors: Рябчиков Б.Е. , Пантелеев А.А. , Касаточкин А.С. , Ларионов С.Ю. , Шилов М.М. 
Published: July 2024

На предприятиях многих отраслей промышленности образуется большой объем сточных вод, содержащих соли различных тяжелых металлов и их соединений. Разработано множество вариантов технологий, позволяющих извлекать тяжелые металлы из сточных вод: ионный обмен и мембранные технологии, а также реагентные методы. Однако в результате очистки с помощью первых двух методов образуются новые высококонцентрированные растворы токсичных компонентов, которые требуют последующего захоронения или отверждения. Реагентные методы позволяют получать отходы в виде шлама, который также необходимо обрабатывать и подвергать захоронению. В результате эти технологии часто используются совместно. Некой альтернативой являются методы очистки, основанные на интенсивном реагентном осаждении в вихревом слое в присутствии затравочного материала, обычно песка. В этом случае продуктом являются гранулы, как правило, карбоната кальция, со связанными в слое карбоната тяжелыми металлами или другими токсичными загрязнениями. Разработанная динамическая система умягчения воды (ДСУ), предназначенная для удаления карбонатной жесткости из питьевой воды, была опробована для целей удаления цветных металлов. Полученные результаты позволяют рассчитывать на высокую эффективность данного метода.
Many industrial enterprises generate large amounts of wastewater containing salts of various heavy metals and their compounds. Numerous technological options have been developed to extract heavy metals from wastewater: ion exchange and membrane technologies, as well as chemical methods. However, using the first two methods results in the generation of new highly concentrated solutions of toxic components that require subsequent landfilling or solidification. Chemical methods provide for obtaining waste in the form of sludge that also needs processing and landfilling. Consequently, these technologies are often combined. Some methods based on the intensive chemical precipitation in a vortex layer in the presence of seeding material, sand, as a rule, can be considered as an alternative. In this case, products of the process are granules, usually calcium carbonate, with heavy metals or other toxic contaminants bound in the carbonate layer. The developed dynamic water softening system (DSS), designed to remove carbonate hardness from drinking water, was tested for the purpose of removing non-ferrous metals. The results obtained allow us to expect the high efficiency of this method.
Alteraciones en el ciclo menstrual post-infección de COVID-19
Authors: Pérez Martínez María Belén 
Published: July 2024

OBJETIVO: describir las alteraciones en el ciclo menstrual post-infección de COVID-19. MÉTODO: se realizó una revisión de estudios y artículos científicos recientes. RESULTADOS: actualmente se describe la enfermedad de COVID-19 como una enfermedad multisistémica, en la cual cada día se describen casos relacionados con alteraciones en el ciclo menstrual. Estas alteraciones no solamente pueden ser perjudiciales para la salud reproductiva, sino que se asocian con problemas de salud mental, cardiovascular, renales y, en general, afectan la calidad de vida de las mujeres. Las alteraciones en el ciclo menstrual pueden presentarse en cualquier paciente que haya tenido COVID-19. CONCLUSIÓN: Las alteraciones en el ciclo menstrual de la mujer luego de la infección por COVID-19 se ha evidenciado en numerosos estudios realizados, los cuales demuestran que existen cambios en la frecuencia de los ciclos, la duración de cada ciclo y en el volumen menstrual.
Actual state of the problem of psychiatric and psychosocial consequences of mechanical thrombectomy in patients who have suffered ischemic stroke.
Authors: Rehush Andriy 
Published: July 2024

The article discusses current research devoted to the analysis of modern methods of surgical treatment of ischemic stroke, in particular, mechanical thrombectomy; The prevalence, risks and mechanisms of occurrence, clinical manifestations and methods of treatment of the most common psychiatric and psychosocial consequences of ischemic stroke are considered. It was found that in the current literature there is a lack of research into the effect of mechanical thrombectomy on the risk of occurrence and characteristics of the clinical manifestations of these consequences of ischemic stroke. In addition, it was determined that the most effective method of treating this category of patients is an integrated and individualized approach involving a wide range of specialists, in particular in the field of mental health, a combination of medication and psychotherapeutic treatment; Of particular importance in the context of post-hospital rehabilitation are psychosocial activities with elements of psychoeducation for patients and their relatives. A promising scientific search is in the development of comprehensive measures aimed at solving the problem of psychiatric and psychosocial consequences of mechanical thrombectomy in patients who have suffered an ischemic stroke.
Key words:	ischemic stroke, psychiatry, depression, anxiety, cognitive impairment, psychotherapy
Innovative opportunities of pharmakotherapy of generalized anxiety disorder
Authors: Denysov Yevhen , Putyatin Gennadii 
Published: July 2024

The work shows the actual problem and proven effectiveness of treatment of generalized anxiety disorder (GAD), including its modern methods. There was an open-label, 6-week study of the efficacy, safety, and tolerability of opipramol dihydrochloride 200 mg/day to evaluate an innovative method of treatment the patients with GAD. The conducted study demonstrates the rapid and powerful anxiolytic effect of opipramol dihydrochloride in the treatment of general, mental and somatic anxiety in patients with GAD. Opipramol dihydrochloride demonstrates a reliable fast and strong vegetative-stabilizing effect in the treatment of vegetative and somatic symptoms from the cardiovascular, gastrointestinal, respiratory, genitourinary and neurological systems in the patients with GAD. Opipramol dihydrochloride is the drug of first choice in the treatment of GAD and an alternative treatment for anxiety disorders.
Key words:	generalized anxiety disorder, sigma receptors, opipramol, Hamilton anxiety scale
PENGARUH KARAKTERISTIK PERSONAL SERTA DUKUNGAN ORGANISASI TERHADAP PERSEPSI KOMPETENSI DIGITAL GURU SEKOLAH XYZ DI BEBERAPA WILAYAH INDONESIA
Authors: Aprianto Abet nego aprianto , Suciati  
Published: July 2024

Perkembangan TIK yang begitu pesat memberikan dampak yang besar diberbagai sektor kehidupan. Pendidikan merupakan sektor yang menerima dampak secara langsung. Digitalisasi dalam bidang pendidikan semakin masif dilakukan. Pemanfaatan media berbasis TIK menjadi tulang punggung proses bembelajaran di masa kini. Guru harus mampu beradaptasi dengan perkembagan TIK agar proses pembelajaran dapat dilaukan semakin maksimal. Penelitian ini bertujuan untuk mengetahui tingkat kompetensi digital serta mengetahui pengaruh karakteristik personal berupa sikap dan minat, dan dukungan organisasi terhadap kompetensi digital guru Sekolah XYZ. Penelitian ini merupakan penelitian kuantitatif dengan subjek penelitian adalah guru sekolah XYZ sebanyak 204 responden, yang tersebar dibeberapa kota di Indonesia. Pengumpulan data dilakukan melalui microsoft office form. Data diolah dengan melakukan Uji T dan Uji F untuk melihat perbedaan kompetensi digital diantara kelompok. Analisis regresi linear digunakan untuk melihat pegaruh setiap variable bebas terhadap variable terikatnya. Hasil penelitian menunjukan tidak ada perbedaan signifikan kompetensi digital guru berdasarkan usia, jenis kelamin, pengalaman mengajar dan latar belakang pendidikan. Namun terjadi perbedaan signifikan antara guru mengajar SMP dengan SMA. Hasil uji regresi menemukan bahwa karakteristik personal dan dukungan organisasi berpengaruh signifikan terhadap kompetensi digital guru sekolah XYZ.

Kata kunci: media berbasis TIK, kompetensi digital, karakteristik personal, dan dukungan organisasi
On computer simulation accuracy estimation with inaccurate parameters of binomial distribution
Authors: Иванов С.К. 
Published: July 2024

Для оценки компоненты дисперсии выходного показателя статистической модели необходимо получить оценки производных от математического ожидания выходного показателя статистической модели по параметрам генерируемых в модели случайных величин. Проанализирована сходимость ряда видов оценок таких производных для случая биномиальных случайных величин. Предложены оценки производных с улучшенной сходимостью. Проведён численный эксперимент для подтверждения теоретических выводов.
To estimate a dispersion of the output value of a Monte-Carlo model due to inaccuracy of input data we need to have estimates of derivatives of the output value by parameters of underlying distributions. A number of estimates of the output value by parameter of binomial distribution are analyzed. Improved estimates are proposed. A numerical experiment was carried out to confirm the theoretical conclusions.
The Aesthetic Constitution of Genders
Authors: Wiltsher Nicholas 
Published: July 2024

This paper presses the programmatic idea that it is fruitful to think of genders as constituted by aesthetic rational social practices; in particular, that doing so can illuminate the relation between social role and self-identity. The first part of the paper describes rational social practices, and then interprets two social-role approaches to genders in light of that description. The interpretation places the two approaches in different domains of reason, one epistemic, one practical; this makes apparent the conceptual space for a model of gender roles inhabiting the aesthetic domain. The second part of the paper articulates such a model, according to which the feminine and masculine roles in a social context consist in aesthetic constraints, enablements and norms. These depend on rational, social, human-centred aesthetic practices in which gender differentiation is essential. The third part of the paper demonstrates the utility of this model by using it to explore the relation between social role and self-identity; it argues that one identifies with a gender by actively participating in the very aesthetic practices that constitute it, and so generating reasons for self-valuation. Throughout, the point is not so much to defend the specific details of the suggested views, but more to show that the idea that aesthetic practices play a significant role in constituting gender merits serious consideration.
Target-based anticancer glycyrrhetinic derivatives: Design, synthesis, biological assessment and molecular docking studies
Authors: O. Moustafa Gaber , Kalmouch Atef , S. Abd El-Karim Somaia , S. Nossier Eman , M. Mounier Marwa , El-Sayed Heba , A. Almehizia Abdulrahman , M.  Naglah Ahmed , A. Zen Amer 
Published: July 2024

18-Glycyrrhetinic acid (GA) is regarded as the principal active component isolated from the Chinese medicinal plant of licorice root, and it has considerable anticancer actions. This work was built on the discovery and design of brand-new 18-glycyrrhetinic acid (GA) amino acid peptides and peptide ester analogs. The cytotoxic evaluation exhibited that despite the promising cytotoxic activity of the tested peptides 2, 3, 4, 6, and 7 in MCF-7 and HCT-116 cancer cells, with IC50 values ranging from 5.1-7.4 and 6.6-72.7 µg/mL, respectively. Furthermore, all freshly produced GA-peptides with moderate to high activity on tumor cell lines produced a favorable safety profile versus typical human dermal fibroblasts (BJ-1) cellular lineage. Interestingly, 2, 4 and 6 demonstrated excellent multitargeting inhibitory profiles against CDK-2, VEGFR-2, and PDGFR-α kinases. Moreover, since peptide 6 was the most active cytotoxic agent, it was chosen as an illustrative candidate to examine its influence on many apoptotic markers in invitro studies, including Bax, caspase-3 and 7, DNA fragmentation, BCl-2, p53, and tubulin polymerization inhibition. All novel analogs were tested for their antimicrobial efficacy versus a panel of microbial strains. The peptide 6 was also subjected to molecular docking simulations in the active sites of the prior kinases.
KEY WORDS: Peptides, Glycyrrhetinic acid, Anticancer, Cytotoxicity, Molecular docking, Antimicrobial activity
Bull. Chem. Soc. Ethiop. 2024, 38(5), 1369-1392.
DOI: https://dx.doi.org/10.4314/bcse.v38i5.14
Liquid-combustion synthesis of spinel LiMn2O4 cathode material for enhanced electrochemical performance lithium-ion batteries
Authors: Sun Yu , Li Chaofan , Gao Hongcheng , Li Jiaming , Hao Jiabin 
Published: July 2024

A cubic spinel LiMn2O4 cathode material with nanoscale was synthesized via a facile liquid-combustion method at 600, 750 and 850 ℃. The crystal structure and surface morphology of LiMn2O4 electrodes have been characterized by using X-ray diffraction (XRD), scanning electron microscopy (SEM) and transmission electron microscopy (TEM) technique. The samples have an average diameter of 200 nm with an octahedral structure with high crystallinity. Benefiting from the excellent structure, the sample prepared at 750 ℃ delivers the highest first discharge capacity of 115.3 mAh·g−1 with remaining 101.5 mAh·g−1 after 400 cycles at 1 C. Moreover, it exhibits a good cycling performance at 55 ℃, still had the capacity of 105.4 mAh·g−1 with a capacity retention of 71.2% following 282 cycles. The facilely synthesized octahedral LiMn2O4 provides a practical application strategy for lithium-ion batteries.
KEY WORDS: Spinel LiMn2O4, Liquid-combustion method, Lithium-ion batteries
Bull. Chem. Soc. Ethiop. 2024, 38(5), 1429-1437.
DOI: https://dx.doi.org/10.4314/bcse.v38i5.18
A novel composite la-conversion coatings for enhanced anti-corrosion performance under a harsh aqueous environment
Authors: Byeon Haewon , S. Sivagama Sundari M. , Karuppasamy Ilango , S. Jayaram R. 
Published: July 2024

The ceramic lanthanum nanoparticles with uniformly dispersed spherical nanostructures were successfully synthesized using sonication-assisted synthesis. The morphologies and phase compositions were assessed and investigated. The electrochemical impedance analysis potentio-dynamic polarisation measurements were used to calculate the corrosion protection properties of prepared ceramic lanthanum nanoparticles. The La2O3 nanoparticles were added as a surface coating layer to enhance the corrosion resistance of low-carbon steel. The particles' impact on coating development, morphology, and corrosion inhibition efficacy were studied. After particle integration, results show a dramatic reduction in porosity and thickness, affecting corrosion resistance. Incorporating ceramic lanthanum nanoparticles into a coating reduces porosity and increases hardness, improving corrosion resistance; the result implies the suggested technique is viable for creating functionalized coatings on low-carbon-based materials. The results also demonstrated that these methods may increase the development and protectiveness of the coating. There was a crucial nano particulate La2O3 level at which the conversion coatings exhibited the best protective qualities. As it increased the corrosion potential and lowered the anodic current, the composite La-conversion coatings may offer substantial corrosion protection for prolonged immersion in a 3.5% NaCl solution.
KEY WORDS: Ceramic nanoparticles, Low carbon steel, Corrosion prevention, Polarization
Bull. Chem. Soc. Ethiop. 2024, 38(5), 1453-1468.
DOI: https://dx.doi.org/10.4314/bcse.v38i5.20
Manganese oxide-coffee husk and khat (Catha edulis) leftover biochar nanocomposites for removal of Cr(VI) from wastewater
Authors: Kochito Jemere , Emmanuel Femi Olu , Tadesse Tamene , Abdisa Negera , Gure Abera 
Published: July 2024

This study investigates the use of manganese oxide-biochar-nanocomposites synthesized from coffee husk (CH) and khat leftover (KL) for Cr(VI) removal from water. Two pristine biochars of CH and KL were separately synthesized by pyrolyzing their biomasses at 300 ℃ for 1 h. Similarly, biochar-based nanocomposites were synthesized by pretreating 25 g of each biomass with 12.5 mmol of KMnO4 and pyrolyzing at 300 ℃ for 1 h. The pristine biochars, synthesized by pyrolysis of CH and KL, removed 74.98% and 84.78% of Cr(VI) from aqueous solutions containing 20 mg L-1, respectively. However, the resulting nanocomposites exhibited a maximum removal efficiency of 99.63% with manganese oxide-coffee husk biochar nanocomposite (MnOX-CHBNC) and 99.84% with manganese oxide-khat leftover biochar nanocomposite (MnOX-KLBNC) of the Cr(VI). The adsorption isotherm fitted well with the Langmuir isotherm, indicating favorable monolayer adsorption. The kinetics of adsorption followed the pseudo-first-order model. The MnOX-CHBNC and MnOX-KLBNC demonstrated satisfactory removal efficiencies even up to six cycles, indicating their potential effectiveness for large-scale use in removing Cr (VI) from wastewater.
KEY WORDS: Adsorption, Biochar-nanocomposite, Coffee husk, Cr(VI) removal, Khat leftovers
Bull. Chem. Soc. Ethiop. 2024, 38(5), 1225-1240.
DOI: https://dx.doi.org/10.4314/bcse.v38i5.3
Removal of sulfur compounds from Iraqi crude oil using γ-Al2O3 nanoparticles
Authors: Hussien Al khazraji Abdulqadier , Khalid Mohammed Mostefe , Hasan  Fahmi Alaa , H. Mourad Sahar 
Published: July 2024

γ-Al2O3 nanoparticles have been synthesized using aluminium(III) sulfate as a source of metal. Ceratonia silique leaves extract was used as a reducing agent and sodium hydroxide solution as a precipitating. XRD, BET, FE-SEM, EDX, and DLS Techniques were used to characterize the prepared alumina. The desulfurization process was applied by adsorption of sulfur compounds from Iraqi crude oil using the prepared γ-Al2O3 nanoparticles. The efficiency of aluminium oxide nanoparticles as an adsorbent was studied for different factors such as adsorbent quantity, contact time, pH, and temperature. The average size of γ-Al2O3 nanoparticles is 12.44 nm, with a size distribution of particles from 90 nm to 900 nm. The mixture was drained at 80 ºC, and then calcined at 600 ºC, BET analysis shows a high surface area (72.03 m2 g-1) and uniform pore sizes of Al2O3 NPs. The FE-SEM images showed that the nanoparticles appeared smooth and cylinder-shaped within the average size of 100.53 nm. The obtained results of removal of the sulfur compounds from crude oil using γ-Al2O3 nanoparticles showed a high desulfurization and were achieved with adsorbent at specific conditions: 150 min, 0.5 g of adsorbent, temperature at 25 ºC and acidic medium pH = 2.
KEY WORDS: Crude oil, γ-Al2O3 nanoparticles, Ceratonia siliqua leaves extract
Bull. Chem. Soc. Ethiop. 2024, 38(5), 1241-1250.
DOI: https://dx.doi.org/10.4314/bcse.v38i5.4
Platinum(II) and palladium(II) thiolate complexes; synthesis, characterization, crystal structure, DFT, Hirshfeld surface analysis and anticancer studies
Authors: M. H. Ameen Beriwan , A. Mohamad (Deceased) Hikmat , A. Al-Jibori Subhi 
Published: July 2024

The synthesis and characterization of platinum(II) and palladium(II) mixed ligand complexes, [M(mtzS)2(dppm)] (M = Pt or Pd), have been described. These complexes were synthesized through a one-pot reaction involving K2MCl4, KmtzS (prepared from HmtzS and KOH), and dppm. The prepared complexes 1 and 2 have been characterized by using various analytical techniques including conductivity measurements, IR spectroscopy, UV-Vis spectroscopy, 31P and 1H NMR spectroscopy and 1 by X-ray crystallographic studies. The in vitro anti-cancer activity of complexes 1 and 2 against breast cancer cells (MCF7 cell line), was evaluated using the MTT assay showed a moderate activity with an IC50 value of 27.59 µg/ml for 1 and 28.82 µg/ml for 2. Additionally, the ligands and complexes underwent full geometry optimization using density functional theory (DFT). The calculated geometric and spectral data were found to be in good agreement with the experimental results. Theoretical calculations of molecular orbitals (HOMO-LUMO) and their energies suggested the occurrence of charge transfer within the complexes.
KEY WORDS: Platinum(II), Palladium(II), Thiolate, Diphosphine, X-ray crystallography
Bull. Chem. Soc. Ethiop. 2024, 38(5), 1261-1273.
DOI: https://dx.doi.org/10.4314/bcse.v38i5.6
Modified Regression-Cum-Ratio Types Estimators of Population Coefficient of Variation in Survey Sampling
Authors: Yahya Yusuf Ajibola , Audu Ahmed , Abiodun Yunusa Mojeed 
Published: July 2024

Enhancing the efficiency of estimators is one of the major concerns in sampling survey. Efficiency of estimators measures the precision of the estimator with respect to the corresponding parameters. In this paper, four methods of estimating the population coefficient of variation of the study variable using auxiliary information were suggested by modifying some existing estimators using unknown weight and power transformation techniques. The properties (Biases and MSEs) of the proposed estimators were derived up to first order of approximation using Taylor series approach. Numerical analysis of MSEs and PREs of the proposed and other related existing estimators considered in the study was conducted to justify the efficiencies of the proposed estimators and the results obtained revealed that the proposed estimators have minimum MSEs and higher PREs compared to competing estimators implying that the proposed estimators are more efficient than the existing estimators considered in the study.
Effects of different cowpea (<i>Vigna unguiculata</i>) Varieties on Soil Microbial Population and Biomass Carbon
Authors: Ishola A.D. , Lawal R.T. , Ishola L.T. , Olajire N.T. 
Published: July 2024

The study determined the effects of different cowpea varieties on soil microbial population and biomass carbon. Rhizosphere soils of six different cowpea varieties were selected based on their nodulating ability. This study selected two of the most nodulating varieties (Ife Brown and Tvu113), two medium nodulating varieties (IT08K-150-27 and IT07K-230-2-9) and two least nodulating varieties (Sanzi and IRS-09-1106-4) for analysis. The laboratory was used to assess the microbial population and soil biomass carbon content. Findings indicate that the soil surrounding the roots (rhizosphere soil) of IT08K-150-27 which was of the medium nodulating variety gave the highest microbial population and biomass carbon. Thus, IT08K-150-27 outperformed other varieties in boosting soil microbial activities, consequently improving soil health. Owning to the results obtained in the study, it can be concluded that nodulation ability in cowpea might not proportionately affect soil microbial activity in the rhizosphere soils.