bluuebunny/crossref_metadata_2025_split huggingface dataset:
Study of electrochemical behavior of two chemically similar acridines: Tacrine and 9-aminoacridine on hanging mercury drop electrode
Authors: F. S. Badulla W. , A. A. Hussein W. , Arli G. 
Published: January 2022

ABSTRACT. The electrochemical behavior of two chemically related acridine compounds: tacrine (TAC) and 9-aminoacridine (9-AA) was investigated on a hanging mercury drop electrode (HDME). The electrochemical study was carried out by using Osteryoung square wave voltammetry (OSWV) and cyclic voltammetry (CV) techniques in the Britton-Robinson (B-R) buffer solution at pH = 2.0–12.0, KCl (0.1/0.2/0.3 M) and methanol (0.0-50%) mixture as supporting electrolyte. TAC showed maximum current at pH 7.5 while 9-AA at pH 10, KCl (0.3M), and 10% methanol. The study of electrochemical reduction of 9-AA and TAC on the HDME by using CV resulted in a quasi-reversibility, mainly diffusion-controlled reaction. The reaction involved 1e–/1H+ reduction at nitrogen atom in the case of the 9-AA while the second process involved the 2e–/2H+ reduction of the intra-cyclic azomethine group. The reduction peak potential of structurally related acridine compounds is influenced by the pH values and percentage of the organic solvent of the supporting electrolytes. Also, the study may provide insight into the electron transfer pathways of biological reactions of the acridines and their electrochemical behavior on the electrode.

KEY WORDS: Tacrine, 9-Aminoacridine, Cyclic voltammetry, Osteryoung square wave voltammetry, Hanging mercury dropping electrode

Bull. Chem. Soc. Ethiop. 2021, 35(3), 639-646.
DOI: https://dx.doi.org/10.4314/bcse.v35i3.14
Facile synthesis and dyeing performance of some disperse monomeric and polymeric dyes on nylon and polyester fabrics
Authors: S. Abdullahi S. , Musa H. , Habibu S. , H. Birniwa A. , E. A. Mohammad R. 
Published: January 2022

ABSTRACT. Monoazo disperse polymeric dyes consisting of polyarylazocarboxybenzene-formaldehyde (PACB-F) and polyarylazohydroxynaphthalene-formaldehyde (PAHN-F) were synthesized through diazotisation, coupling and polycondensation reactions in the presence of formaldehyde and aqueous oxalic acid. The structure of the as synthesised dyes was acquired using UV-visible absorption maxima and FT-IR spectroscopy and their color, yield, melting point, solubility, and viscosity determined via standard methods. UV-visible and FTIR results showed successful formation of the polymeric dyes due to shift of wavelength of maximum absorption (λmax) (420-470 nm, 460-510 nm) and new absorption peak at around (2800-2995 cm-1) for methylene bridge, respectively. The yield of the monomeric dyes was 67.1-85.7% and polymeric 45.1-59.3%, melting point was 104.1-131.2 oC, and 136.0-143.5 oC, respectively. They are soluble in acetone, ethanol, and methanol and insoluble in n-hexane and water. The dyeing process was achieved via high temperature and carrier dyeing techniques on nylon and polyester fibers. The dyeing characteristics of the synthesised dyes were analyzed in comparison with commercial disperse dyes (terasil brilliant violet and terasil scarlet brown). The dyeing produced a very attractive hue brown shades with good to excellent washing, light, hot pressing, and rubbing fastness.

KEY WORDS: Carbocyclic, Dyeing activity, Monoazo, Monomeric, Polymeric

Bull. Chem. Soc. Ethiop. 2021, 35(3), 485-497.
DOI: https://dx.doi.org/10.4314/bcse.v35i3.2
Synthesis, characterization, docking and antimicrobial activity studies of binuclear Co(II) and Ni(II) complexes of bis aroylhydrazone and phenanthroline
Authors: Rajam K. G. , Daravath S. , K. Narendrula V. , K. Marri P. , Shivaraj  
Published: January 2022

ABSTRACT. Schiff base (HL) N1,N3-bis(4-(methylthio)benzylidene)-5-nitrobenzene-1,3-dihydrazide (HL) has been prepared from condensation of 4-(methyl thio)benzaldehyde with 5-nitrobenzene-1,3-dihydrazide. Binucleated mixed ligand complexes of nickel(II) ([Ni2(L)(dmphen)2]Cl2, [Ni2(L)(phen)2]Cl2) and cobalt(II) ([Co2(HL)(dmphen)2]Cl2, [Co2(HL)(phen)2]Cl2) complexes have been synthesized from Schiff base (HL) and 1,10-phenanthroline/2,9-dimethyl-1,10-phenanthroline. The synthesized compounds have been characterized by elemental analysis, 1H-NMR, 13C-NMR, FT-IR, UV-Visible, magnetic moment, SEM, powder X-ray diffraction and molar conductivity measurements. Further, the Schiff base and its metal complexes have been investigated for fluorescence activity and molecular docking studies. In addition, Schiff base and its metal complexes were screened for antimicrobial activity against bacteria: Escherichia coli, Bacillus subtilis and fungi: Sclerotium rolfsii and Macrophomina phaseolina.

KEY WORDS: Growth inhibitors, Ternary complex, Tuberculosis, Fluorescence activity, Crystal system

Bull. Chem. Soc. Ethiop. 2021, 35(3), 499-511.
DOI: https://dx.doi.org/10.4314/bcse.v35i3.3
Peroxidase-like activity of hemoglobin-based hybrid materials against different substrates and their enhanced application for H2O2 detection
Authors: Altinkaynak C. , Turk M. , Ekremoğlu M. , Özdemir N. 
Published: January 2022

ABSTRACT. Organic-inorganic hybrid nanoflowers method with unique properties are preferred than conventional immobilization methods for the past decade. Hereemoglobin-based hybrid material (HbNFs@Cu) was synthesized under different experimental conditions (pH 5.0-9.0 and 0.01-0.50 mgmL-1 of hemoglobin) obtaining a material size of 9-10 µm. The encapsulation percentage and weight yield of HbNFs@Cu were determined as 100% and 6.7%, respectively. The peroxidase-like activities of the material against different substrates (ABTS and Guaiacol) were compared to free hemoglobin. The HbNFs@Cu hybrid structure exhibited Vmax of 3.6995 EU/mg and a Michaelis-Menten constant (KM) of 0.1357 mM/mL. The HbNFs@Cu hybrid material was then used to catalyze the oxidation of a peroxidase substrate ABTS to the pigmented product, which provided a colorimetric and spectrophotometric detection of H2O2. The linear operating range, detectable colorimetrically as H2O2 sensor, is 0.005-0.0042 mM, while the linear operating range, detectable spectrometically, is 0.003-0.0042 mM. The limits of detection of colorimetric and spectrophotometric sensors were 0.005 mM and 0.003 mM, respectively. Collectively, these results showed that HbNFs@Cu can be used as colorimetric biosensor for H2O2 in potential applications such as pharmaceutical food, biomedical, environmental, and industrial.

KEY WORDS: Hydrogen peroxide, Hemoglobin, Hybrid Material, Colorimetric assay

Bull. Chem. Soc. Ethiop. 2021, 35(3), 537-550.
DOI: https://dx.doi.org/10.4314/bcse.v35i3.6
Chromosome-level assembly of the common vetch (Vicia sativa) reference genome
Authors: Xi Hangwei , Nguyen Vy , Ward Christopher , Liu Zhipeng , Searle Iain R. 
Published: January 2022

Vicia sativa L. (common vetch, n = 6) is an annual, herbaceous, climbing legume, originating in the Fertile Crescent of the Middle East and now widespread in the Mediterranean basin, West, Central and Eastern Asia, North and South America. V. sativa is of economic importance as a forage legume in countries such as Australia, China, and the USA, and contributes valuable nitrogen to agricultural rotation cropping systems. To accelerate precision genome breeding and genomics-based selection of this legume, we present a chromosome-level reference genome sequence for V. sativa, constructed using a combination of long-read Oxford Nanopore sequencing, short-read Illumina sequencing, and high-throughput chromosome conformation data (CHiCAGO and Hi-C) analysis. The chromosome-level assembly of six pseudo-chromosomes has a total genome length of 1.65 Gbp, with a median contig length of 684 Kbp. BUSCO analysis of the assembly demonstrated very high completeness of 98% of the dicotyledonous orthologs. RNA-seq analysis and gene modelling enabled the annotation of 53,218 protein-coding genes. This V. sativa assembly will provide insights into vetch genome evolution and be a valuable resource for genomic breeding, genetic diversity and for understanding adaption to diverse arid environments.
Ludovico Domenichi nella Querelle des Femmes
Authors: Stefanuto Clelia 
Published: January 2022

L’obbiettivo di questo articolo è quello di illustrare il contributo che il polígrafo Ludovico Domenichi diede all’interno del dibattito sulla Querelle des femmes nell’Italia del 1500.
La produzione Domenichiana in questo studio è divisa in tre gruppi differenti: il primo comprende le opere scritte da Domenichi in veste autoriale, soffermandosi sul primo testo che affronta l’argomento, ovvero la Nobiltà delle donne (1549). Il secondo gruppo analizza le opere scritte da donne ma promosse e curate dal poligrafo, dove nello specifico si analizzeranno le Rime della signora Laura Terracina (1548). Il terzo parágrafo infine, illustra alcune dediche di opere scritte da Domenichi e rivolte a nobildonne dell’epoca, ponendo l’attenzione su quelle presenti nelle Rime del 1544.
Pseudomeningocele after in utero repair of myelomeningocele as an early sign of hypertensive hydrocephalus – a case report and review of the literature
Authors: Cardeal Daniel Dante , Britto Ingrid Schwach Werneck , Herbst Sandra Rejane Silva , Toita Milton Hikaru , Bordini Gabriela Duarte , Veiga José Carlos Esteves , Ruano Rodrigo 
Published: January 2022

Background Myelomenigocele (MMC) is the most common congenital defect of the spine. The Management of Myelomeningocele study (MOMS trial) demonstrated that the prenatal repair decreased shunt implant, reversal of hindbrain herniation and better neurologic function compared to postnatal repair. Several ultrasound findings can predict the risk of postnatal hydrocephalus after intrauterine MMC repair. This report shows a prenatal pseudomenigocele after intrauterine correction of MMC as an early sign of hydrocephalus.
Method A 34-year-old female G2P1 with a prenatal diagnosis of MMC with anatomical level L4 and ventricular enlargement was submitted to open surgery intrauterine repair. Follow up ultrasound showed regression of the lemon sign, partial regression of hindbrain herniation and a progressive increase in the wound with local bulging characterizing a pseudomingocele. In the postnatal period, after correction of the pseudomenigocele, the neonate showed signs of hipertensive hydrocephalus. After ventriculoperitoneal shunt, the patient was discharged.
Conclusion Presence of pseudomeningocele prenatally after in utero repair of MMC may represent an early sign of hypertensive hydrocephalus.
uso de aplicaciones tecnológicas y su impacto sobre el desempeño de las micro y pequeñas empresas latinoamericanas
Authors: León Torres Henry 
Published: January 2022

El uso frecuente de aplicaciones tecnológicas y demás instrumentos disponibles en la actualidad, como herramientas adecuadas y factores económicos para la producción, comercialización y gestión de las mype, por su bajo costo y fácil acceso, constituyen una de las principales oportunidades para el avance de este tipo de organizaciones en Latinoamérica.
A través de la presente investigación, se pretende identificar cómo incide el uso e implementación de este tipo de tecnologías, sobre la competitividad y ámbito de ventas en las mype latinoamericanas de México, Perú, Ecuador, Argentina y Colombia y sobre las cuales, las condiciones de formalidad o informalidad de la mype, puede tener efectos diferenciados sobre su desempeño.

Abstract
The frequent use of technological applications and other instruments currently available as appropriate tools and economic factors for the production, marketing and management of mype, due to their low cost and easy access, constitute one of the main opportunities for the advancement of this type of organizations in Latin America.
This research aims to identify how the use and implementation of this type of technology affects competitiveness and sales in Latin American mype in Mexico, Peru, Ecuador, Argentina and Colombia, and on which conditions of formality or informality of the mype may have different effects on their performance.
review of the use of music therapy in the treatment of migraine
Authors: Hall Suzanne , O'Brien Hope 
Published: January 2022

Background: Migraine is a common debilitating disorder that is undertreated. Music therapy has been used successfully in pain disorders in the past. The paper is intended to provide a systemic review on the state of research specific to music therapy and migraine headache. Methods: Manual search engines of university libraries that includes PubMed Cochrane review, ClinicalTrials.gov were used. Inclusion criteria were subjects with migraine undergoing music therapy and peer reviewed articles published in English language between January 1980 and July 2021. Results: Out of 728 search results, 4 met inclusion criteria. The outcomes regarding the effects of music therapy on patients with migraine were inconsistent. Conclusions: Further studies are needed to evaluate the effects of music therapy on migraine headaches.
DETERMINING THE IMPACT OF LEAN MANUFACTURING ON NAIROBI BOTTLERS LIMITED'S RESULTS.
Authors: Thua Stephen , Bett Shadrack 
Published: January 2022

Purpose: The study aimed at determining the impact of lean manufacturing on Nairobi Bottlers Limited’s results.
Materials and methods: This study adopted a descriptive survey design. The management staff Nairobi Bottlers Limited were the target population of the study. The population of the study was 308 management staff members. A stratified random sampling procedure was used to pick 93 participants. The area of study was the County of Nairobi. Regression analysis of the data was carried out using statistical package for social sciences (SPSS) computer software.
Results: The study found out that standardization of products, waste reduction procedures, mechanization of the production line and ccapacity building among staff and system was embraced by NBL.
Recommendations: The study recommends that standardization of, that waste reduction procedures, that mechanization of the production line and capacity building among staff and system should be increased by NBL.
Estimación de la producción de cebada a partir de imágenes Sentinel-1, Sentinel-2 y variables climáticas
Authors: Iranzo Cristian , Montorio Raquel , García-Martín Alberto 
Published: January 2022

A precise estimation of agricultural production provides relevant information for upcoming seasons, and helps in the assessment of crop losses before harvest in case of adverse situations. The objective of this work is to explore the development of a model capable of estimating barley production of a small agricultural production (127 ha) in Belchite, Spain. Variables adapted to the crop calendar of the growing barley are used to achieve that purpose. The variables have been created with weather data and remote sensing images. These images are acquired in two ranges of the electromagnetic spectrum, i.e., microwaves and optical spectral range, obtained from Sentinel-1 and Sentinel-2, respectively. Models are defined with a multiple linear regression method using all combinations of the independent variables correlated with production. The best linear regression model has a prediction error of 57.38 kg/ha (4%). The use of spectral variables, derived from radar vegetation index Cross Ratio (CR) and optical Inverted Red Edge Chlorophyll Index (IRECI), and climatic variables adapted to the crop calendar and climatic conditioning is revealed as an adequate strategy to obtain adjusted models.
Gula Gending Dalam Sudut Pandang Budaya dan Perannya Menyokong Pendidikan Generasi Muda Desa Kembang Kerang
Authors: Wahyuni Sri , Kaharudin Kaharudin 
Published: January 2022

Gula gending merupakan sejenis jajanan khas yang berasal dari Desa Kembang Kerang yang begitu populer pada era 80an sampai 90an, terutama bagi anak-anak pada masa itu, sekaligus merupakan sebuah pertunjukan musik yang dimainkan ketika pedagang harum manis mempromosikan barang dagangannya untuk menarik perhatian calon pembeli. Gula Gending sering juga disebut sebagai jajanan khas Lombok (rambut nenek) yang di beberapa Daerah juga dikenal dengan beberapa sebutan, seperti gula kapas, harum manis, permen kapas (cotton candy). Kepopuleran gula gending dan banyaknya masyarakat kembang kerang memilih berprofesi sebagai pedagang gula gending membuat peneliti tertarik mengkaji lebih dalam bagaimana eksistensi gula gending dalam dinamika budaya Lombok ? dan seberapa besar perannya menyokong pendidikan generasi muda desa kembang kerang ?. Dengan melakukan studi kepustakaan peneliti mengkaji literatur terkait “gula gending”. Sebagai wadah dari para pengrajin kuliner dalam menjajankan manisan tersebut, produk unggul yang lahir dari kearifan lokal ini telah mampu memberikan kehidupan yang lebih baik bagi warga masyarakatnya yang bermata pencaharian sebagai pengrajin dan penjual gula gending berkembang di lingkungan Desa Kembang Kerang Daya sebagai mata pencaharian masyarakat setempat. Alat pukul yang khas ini, hanya ada di Desa Kembang Kerang Daya dan kini merambah di Pulau Lombok sampai luar Daerah. Sehingga mereka mampu menyekolahkan anak-anak mereka hingga sarjana bahkan sampai doctor, tidak hanya itu, dari hasil berjualan gula gending mereka bisa pergi ke tanah suci Makkah untuk menunaikan ibadah haji. Analisis dilakukan terhadap fakta gula gending sebagai alat musik tradisional yang khas dengan keunikannya sudah dikenal sampai manca Negara serta eksistensinya dalam dinamika budaya Lombok
Perancangan Aplikasi Android Untuk Media Pembelajaran Budidaya Tanaman Secara Hidroponik Dengan Metode Demon-Disco Learning
Authors: Daniel Novianto  
Published: January 2022

Utilization of a mobile device with the Android operating system that is used as a supporting medium and supplement in improving learning outcomes combined with demonstration and discovery learning or demon-disco learning methods is needed to help students improve learning outcomes in vocational competence subjects in hydroponic crop cultivation in vocational high schools Kristen Terang Bangsa, because the use of android-based applications can provide new experiences regarding the use of information and communication technology, as well as provide opportunities for students to be able to learn more independently.
The concept chosen as a learning media is to explain the material about understanding, introduction of parts, types, and quiz containing questions about hydroponic plant cultivation. This research uses the Research and Development (RnD) product development method, using 6 out of 10 stages research that is the potential and problems, data collection, product design, design validation, design improvement, product trials.
The results of this study are to produce learning media in the form of Android-based applications. The validity value of media experts is 2.6 which is declared feasible, while the validity value of material experts is 3.6 which is declared feasible, and is able to increase the average value in the subject of vocational competence in hydroponic cultivation in Christian Terang Bangsa Vocational Schools which initially 67 (with 13 students who had not yet reached KKM) to 80 (with 4 students who had not yet reached KKM).
PERBANDINGAN PENGGUNAAN PLTS DENGAN GENSET DI DESA SOKO KEMBANG KECAMATAN PETUNGKRIYONO KABUPATEN PEKALONGAN DITINJAU DARI MORE EFFICIENT PROCESS
Authors: Ghoni Musyahar  
Published: January 2022

In Pekalongan, precisely in the village of Soko Kembang, Petungkriyono sub-district, as many as 31 units of PLTS were made. This PLTS works stand alone, with the SHS system. Each SHS unit consists of a 50 Wp solar panel, three light points, a 70Ah battery, and a Box Control Unit. Based on preliminary field studies, the use of SHS is very useful and helps the community at night especially students and mothers who have small children and helping residents of Soko Kembang village, a remote village that had previously relied on lighting from oil lamps and rental generators.
The use of solar power plants has an impact on the economic life of the community, which is assessed from an increase in the people's economy. This is evidenced by the high payback.
Predictors of Success of Redo PTMC
Authors: Iqbal Zafar , Munir Usama , Sayed Tahir Mukhtar , Gul Sabahat , Zafar Hammad , Pannu Furqan Yaqub , Afshan Shamila , Shafqat Amna 
Published: January 2022

Background: The goal of this study is to investigate the factors that influence the effectiveness of redo percutaneous Transvenous Mitral Commissurotomy (PTMC) and to See how it affects MVA and echocardiographic parameters. Methods: It was a single-center, retrospective research that took place at Cardiac Center QAMC Bahawalpur from 3rd January to 31st December 2020. All patients who had Redo PTMC had their medical records reviewed. The pre- and post-procedure values for mitral valve area (MVA), left atrial pressure (LA pressure), pulmonary artery systolic pressure (PASP), and mitral regurgitation (MR) were compared. Results:. Total 78 patients were enrolled , 28(36%) males and 50(64%) females with a mean age 37.15± 2.63 enrolled age range between 25-45 years. Patients were divided into two groups, the average age of in successful (Group I) patients was 31.08±5.83 years and in un-successful (Group II) patients was 30.73±4.21. In Group-I, 18(64.3%) males and 30(60.0%) females as compare with Group-2, 10(35.7%) males and 20(40%) female’s patients were enrolled. Both groups were well matched in other demographic and echocardiographic characteristics .	Findings of echocardiographic parameter showed that there is difference in Mitral Valve Area in (successful vs unsuccessful group) 1.69±0.11 vs 0.67±0.23 with p-value 0. 024.. The mean PA pressure13.25±5.19 vs 23.25±6.55 and Mean LA Pressure 13.25±5.19 vs 23.25±6.55 with p-value 0.29 between pre and post-Redo PTMC was statistically significant as p-value = 0.001. Conclusion: In patients with mitral restenosis, PTMC is a viable, safe surgery with a high success rate and tolerable morbidity. Repeat PTMC should be the procedure of choice in individuals with poor echo scores and no concomitant illnesses. Redo PTMC can be utilized as a palliative approach in patients with more severe valvular and subvalvular deformity who are at high risk of morbidity and death with MVR due to the presence of substantial concomitant conditions. Keywords: PTMC Percutaneous transvenous mitral commissurotomy, MR Mitral Stenosis Rheumatic heart disease, Valve area, Mitral stenosis PASP pulmonary artery systolic pressure