bluuebunny/crossref_metadata_2025_split huggingface dataset:
Fabrication of novel PN-heterojunction CuS/TiO2 nanocomposite for the photocatalytic degradation of rhodamine B dye under visible light irradiation
Authors: Mahmood Zahid , Aslam Waheed , Bilal Muhammad , Javed Khalid 
Published: September 2023

ABSTRACT. In the current study, a novel visible light-active photocatalyst CuS/TiO2 nanocomposite was synthesized by a template-free hydrothermal method. Fourier transform infrared spectroscopy (FTIR) confirmed the formation of synthesized nanocomposites and the structural characteristics of synthesized nanoparticles were characterized and confirmed by the X-ray diffraction (XRD) technique. The morphology and particle size of synthesized nanocomposites were measured by a field emission scanning electron microscope (FESEM), which revealed an average particle size of around 30 nm. The optimized efficiency of the fabricated photocatalyst was assessed for the photodegradation of rhodamine B (RhB) dye. It was observed that the photodegradation efficiency of CuS/TiO2-Y composites having a molar ratio of 1:1 for RhB was found to be 89.54% under visible light irradiation.
KEY WORDS: CuS/TiO2 nanocomposite, Heterojunction structure, Rhodamine B, Photodegradation, Visible light irradiation
Bull. Chem. Soc. Ethiop. 2023, 37(6), 1553-1564. DOI: https://dx.doi.org/10.4314/bcse.v37i6.19
Highly sensitive zero-order emission system - fluorescence detection-liquid chromatographic method for simultaneous estimation of two banned phenyl xanthene dyes in bottled chili sauce
Authors: M. Ali Hazim 
Published: September 2023

ABSTRACT. A zero-order emission system was applied to address the variation in emission wavelengths between analytes. Also, it assists to compensate for the drop in emission intensity resulted from the changes in analyte excitation wavelength. So, a high performance liquid chromatography-fluorescence detector (HPLC-FLD) with zero order emission mode was used for the simultaneous estimation of rhodamine B (RhB) and eosin Y (EsY) based on their native fluorescence. The presented method is considered the first fluorescence method for simultaneous determination of RhB and EsY. The efficiency of the developed method was tested by determining the two dyes in a high matrix sample, chili sauce. Under the optimum condition, a linear calibration graphs for RhB and EsY in range of 0.5 -300 ng/mL with r = 0.9994 and 0.9991, respectively, were acquired. The limits of detection for RhB and EsY were 0.344 ng/mL (0.355 ng/g) and 0.215 ng/mL (0.222 ng/g), respectively. The recovery percentage and relative standard deviation of two analytes were obtained in the range of 98.38-101.86% and 0.83-1.66%, respectively. RhB was detected only in one chili sauce sample at a concentration of 0.388 ng/mL while EsY was not found in any sample.
KEY WORDS: Rhodamine B, Eosin Y, HPLC-FLD, Zero-order emission mode, Solid phase extraction
Bull. Chem. Soc. Ethiop. 2023, 37(6), 1315-1323. DOI: https://dx.doi.org/10.4314/bcse.v37i6.2
Fluoride content of common legume beans consumed in Ethiopia
Authors: Lemma Kalkidan , Singh Chandravanshi Bhagwan , Chebude Yonas 
Published: September 2023

ABSTRACT. The most widely used legume beans food in Ethiopia are fava beans (Vicia faba), green gram (Vigna radiata), white lupin (Lupinus albus), and three types of kidney beans (Phaseolus vulgaris). These legume crops are grown in various regions of Ethiopia and can absorb significant amounts of fluoride from air, water, and soil. This study examined the fluoride content of legume beans collected from four different regions of Ethiopia by ion selective electrode potentiometry. Fluoride concentrations in this study were found to range from 1.9 to 22.8 mg/kg. Fava bean sample from Asella was found to contain higher fluoride (22.8 mg/kg) than in the fava beans from other sites and other beans from any site. Fluoride levels (13.0 mg/kg) in kidney bean from Migira was in the middle of the range while the fluoride levels (2.5 mg/kg) in the white lupin and green gram (1.9 mg/kg) were found in the lower end of the range. This study indicates that daily consumption of 100 g of fava and kidney beans may results in health problem while that of green gram and white lupin are safe for human health (will not exceed 3 mg/day set by Food and Nutrition Board of USA).
KEY WORDS: Fava bean, Green gram, Kidney beans, White lupin, Food, Fluoride
Bull. Chem. Soc. Ethiop. 2023, 37(6), 1325-1336. DOI: https://dx.doi.org/10.4314/bcse.v37i6.3
Synthesis, spectral characterization, and biological activities of novel palladium(II) and platinum(II) complexes of active Schiff base ligands
Authors: Raj Jaswant , Jain Akshita , Sharma Naveen , Kumari Anita , Fahmi Nighat 
Published: September 2023

ABSTRACT. A new series of palladium(II) and platinum(II) Schiff base complexes have been synthesized by the interaction of ligands N-(2-fluoro benzylidene)isonicotinohydrazone (L1H) and N-(2-fluorophenylethanone) isonicotinohydrazone (L2H) with PdCl2 and PtCl2. Elemental investigations, melting point determinations, molecular weight determinations, IR, 1H NMR, and UV-Visible spectral studies were used to describe the structure and bonding pattern of ligands and their metal complexes. These analyses revealed that the ligands coordinate with the metal ions in a monobasic bidentate manner and that the complexes have a square planar geometry. The antimicrobial activities of both the ligands and their palladium(II) and platinum(II) complexes have been tested against various bacterial and fungal strains and showed considerable antifungal and antibacterial characteristics. The in vitro cytotoxic activity of [Pt(L2H)]Cl2 complex was assessed by examining its potential to inhibit cell proliferation against the human HeLa cell line(cervical cancer cell line) using MTT assay and the antioxidant activity of [Pt(L1H)2]Cl2 compound was performed against DPPH. The results showed a dose-dependent cytotoxic and radical scavenging activity thus pointing towards the biological significance of Pt(II) complexes.
KEY WORDS: Schiff base ligands, Antimicrobial activity, Scavenging activity, Cytotoxic
Bull. Chem. Soc. Ethiop. 2023, 37(6), 1383-1396. DOI: https://dx.doi.org/10.4314/bcse.v37i6.7
Preparation and physico-chemical properties of lanthanide(III) complexes with 2-((E)- (tert- butylimino)methyl)-6-methoxyphenol
Authors: Mkwakwi Kwakhanya , Hosten Eric , Betz Richard , Abrahams Abubak’r , Madanhire Tatenda 
Published: September 2023

ABSTRACT. The reactions of lanthanide nitrates with 2-((E)-(tert-butylimino)methyl)-6-methoxyphenol (HL1) have yielded five complexes that are described by the formulae [Ce(HL1)2(NO3)3]∙MeOH and [Ln(HL1)2(NO3)3] (Ln = Nd(III), Gd(III), Ho(III) and Er(III)) and were characterized using physico-chemical techniques including single-crystal X-ray diffraction spectroscopy. The cerium complex crystallized in a triclinic P-1 space group, while the rest of the complexes crystallized in the monoclinic P21/c space group. All the complexes are ten-coordinate, adopting a tetradecahedron geometry with two HL1 molecules coordinated through the phenolic and methoxy oxygen atoms. The coordination sphere is completed by six oxygen atoms from three bidentately coordinated nitrate ligands. Electronic data reveals that only the neodymium, holmium and erbium complexes exhibit weak f-f transitions in the visible region.
KEY WORDS: Preparation, Physico-chemical properties, Lanthanide, Schiff base complexes, Crystal structure, Geometry
Bull. Chem. Soc. Ethiop. 2023, 37(6), 1397-1410. DOI: https://dx.doi.org/10.4314/bcse.v37i6.8
Assessment of Minor Blood Group System Antigens and Their Phenotype among Voluntary Blood Donors in Ethiopian Blood and Tissue Bank Service, Addis Ababa, Ethiopia
Authors: Jenbere Getu , Urgessa Fekadu , Tibebu Melatwork 
Published: September 2023

Background: Red blood cell antigens are numerous in structural and functional diversity; some are proteins while others are carbohydrates. The international society of blood transfusion currently recognized 43 blood group systems containing 349 red cell antigens. It also acknowledged 9 blood group systems (ABO, Rhesus, Kell, Duffy, Kidd, MNS, P, Lewis, and Lutheran) that are clinically significant and associated with hemolytic transfusion reactions as well as hemolytic disease of fetuses and newborns. The objective of this study was to assess the distribution of minor blood group antigens and their phenotype among voluntary blood donors in Ethiopian blood and tissue bank service in Addis Ababa.
Method: A cross-sectional study was conducted from January to March 2022 among 260 volunteer blood donors to determine minor blood group antigens and their phenotype at EBTBS, Addis Ababa, Ethiopia. Tests were performed using Galileo Neo Immucor, which is fully automated Immunohematology analyzer.
Result: A total of 260 blood donors were screened of which 153 (59%) were males. The antigen frequencies of minor blood group systems were: Fy(a), Fy(b), Jk(a), Jk(b), k, S, s were 33.5%, 43.5%, 97.7%, 40.4%, 100%, 45%, 90%, respectively. Regarding phenotype distribution, the most common phenotypes were: Duffy Fy (a-b+) 36.9%, MNS S-s+ 55% and Kidd Jk (a+b-) 59.6%.
Conclusion: This study highlights the frequencies of Fy(a), Fy(b), Jk(a), Jk(b), k, S and s blood group antigens and their phenotypes in volunteer blood donors at EBTBS, Addis Ababa. For the management of alloimmunization cases in transfused patients, knowledge of these minor blood group antigens is relevant.
Frequency of Developing COVID-19 Pneumonia in Patients Who Were Vaccinated Double-Dose CoronaVac: Data of the Pandemic Authorized Hospital in Northern Cyprus
Authors: Berksel Ersan , Aykac Asli , Akdur Dilaver , Suer Kaya 
Published: September 2023

Background: RT-PCR is the leading method used in the diagnosis of COVID-19, caused by 2019-nCoV. CT applications also provide a fast and easy diagnosis for detecting pneumonia caused by the SARS-CoV-2 virus. The current study, aimed to compare the lung involvement of vaccinated (two-dose CoronaVac) and unvaccinated patients in the early stage of COVID-19 disease.
Methods: In the current retrospective study, which included patients diagnosed with RT-PCR COVID-19 positivity (n=651) between 01 July 2021-15 September 2021, patient information was obtained from the authorized hospital of the pandemic. Data included patients' chest CT scans and whether patients had been vaccinated (two-dose CoronaVac) information.
Results: The ratio of vaccination with double-dose CoronaVac in positive patients was 74.3%. The ratio of patients with normal lung appearance was 61.8%. It was determined that the ratio of involvement in both lungs of patients who were vaccinated with a double dose was significantly lower than the ratio of involvement in patients who were never vaccinated (p < 0.001).
Conclusion: In this study, it was determined that pneumonia cases were less common in individuals vaccinated with double-dose CoronaVac. In this study, it was also determined that the protection of the vaccine was higher in females than in males and that the protection of the double-dose CoronaVac vaccine was higher in the 50-60 age group compared to 60 older patients.
REKLAM HUKUKU AÇISINDAN SOSYAL MEDYA KULLANICI DAVRANIŞLARININ REKLAM KABUL EDİLEBİLİRLİĞİNİN DEĞERLENDİRİLMESİ
Authors: TÜZGEN Abdurrahman Hamza 
Published: September 2023

Sosyal medya platformlarının gündelik hayattaki yerinin her geçen gün artmasına bağlı olarak reklam anlayışı da ciddi bir dönüşüm yaşamaya başlamıştır. Bu değişim, sosyal medya kullanımının arttıkça, yeni reklam yöntemlerini bünyesine katarak, yenilenmeye devam etmektedir. Reklam alanındaki hukuki düzenlemeler her zaman bu değişime aynı hızda ayak uyduramadığı için kimi zaman ortaya birtakım sorunlar çıkmaktadır. Sorunların çözümleri için öncelikle sosyal medyanın kendine has yapısının ve bu yapının ortaya çıkardığı reklamların tespiti büyük önem arz etmektedir.
Çalışmamızda, tespiti yapılması ve çözüm üretilmesi gereken birçok konu arasından, sosyal medya kullanıcı davranışlarının reklam kabul edilebilip edilemeyeceğinin tespiti üzerinde durulmuştur. Makalede, yaygın sosyal medya davranışları ayrıntılı olarak ele alınmıştır. Bu davranışların organik ve reklam amaçlı kullanımının farkının belirlenmesi zorluk arz etmektedir. Bu sebeple, her davranış biçimi için örnekler ve kararlar üzerinden reklam kabul edilebilme durumları açıklığa kavuşturulmaya çalışılmıştır.
Çalışmanın sonuçları, sosyal medya platformlarındaki reklam kullanımının karmaşıklığını göstermekte ve hukuki süreçler için önemli ipuçları sunmaktadır. Sosyal medya platformlarında reklam türlerinin sürekli değişkenlik gösterdiği göz önünde bulundurulduğunda, bu çalışmanın gelecekteki araştırmalara ve düzenlemelere katkı sağlaması hedeflenmektedir.
Exploring the Lived Experiences of 911 Dispatchers: A Phenomenological Study
Authors: Stanley Dawson , Manning LaShondra 
Published: September 2023

911 dispatchers are considered the first of the first responders. Despite existing literature concluding 911 dispatchers experience rates of traumatic exposure similarly to other emergency service personnel, there is limited research regarding this population’s specific experiences. The purpose of this study was to explore the lived experiences of 911 dispatchers to determine the consistency of their experiences with the limited existing literature regarding trauma-related disorders among dispatchers. In this international study, a transcendental phenomenological research approach was utilized to describe the lived experiences and commonalities of the participants. Participants were primarily recruited through social media groups specifically for 911 dispatchers. Based on the findings from this study, six prominent themes emerged: (a) health issues, (b) juxtaposed positive and negative work environment, (c) passion and pride about work, (d) cumulative stress, (e) vicarious traumatization, and (f) strained interpersonal relationships. Limitations, recommendations for future research, and implications are discussed.
Keywords: 911 dispatchers, traumatic calls, posttraumatic symptoms, lived experiences
2000 ve Sonrası Popüler Türk Sinemasında Delilik Temsilleri Bağlamında Hegemonik Toplumun Akılcı İnşası
Authors: ARGIN Yeşim 
Published: September 2023

Öz
Bu çalışmada Türk sinemasında delilik üzerinde tahakküm kurma çabasının nasıl şekillendiğinin belirlenmesi amaçlanmıştır. Bu amaçla 2000- 2019 yılları arasında Türkiye’de en çok izlenen ilk üç film arasından, deli karakterlerin başrolde olduğu filmler belirlenmiştir. Bu doğrultuda Vizontele (2001), Mucize (2015) ve Yedinci Koğuştaki Mucize (2019) filmlerindeki delilik temsilleri beden, güç ve iktidar yapısı bağlamında ele alınmıştır. Hermeneuitik bir yaklaşımdan hareketlenen bu çalışmada, nitel araştırma desenlerinden durum çalışması modeli kullanılarak filmler çözümlenmiştir. Çözümleme sonucunda filmlerdeki deli olarak tanımlanan karakterlerin toplum içerisinde yaşadığı; ancak normal olarak inşa edilen güç/akıllı tarafından aşağılandığı, alay edildiği ve damgalandığı görülmüştür. Bununla birlikte bu karakterler: saf, masum, yardıma muhtaç, güçsüz ve komik şekillerde temsil edilmiştir. Bu durum normal olanların gücünü ve üstünlüğünü göstermiş; bir ayrıştırma ve damgalama biçimini inşa etmiştir. Ayrıca filmlerdeki delilerin, hem erkek olması hem de kusurlu bir bedeni temsil etmesi bakımından bu karakterlerin aklın sınırlarından uzaklaştırıldıkları ve eril güç kaybına uğrayarak bir tür iktidar kaybı yaşadıkları ortaya çıkarılmıştır. Bununla beraber toplumu kontrol etmenin deliyi dışlamakla da mümkün olduğu anlaşılmış ve deliliğin metaforik bir biçimde normal olanın inşası için kullanıldığı tespit edilmiştir.
A organização do conhecimento como espaço de articulação de comunidades discursivas
Authors: Oliveira Walter Clayton de , Guimarães José Augusto Chaves 
Published: September 2023

Introdução: A organização do conhecimento constitui uma construção cultural, permeada por valores situados no espaço e no tempo, e caracterizada por uma natureza helicoidal - circular aberta e ascendente – aspecto que reflete a dinâmica das comunidades discursivas nela interagentes, permeadas por forças sociais transformadoras e por uma ética de reciprocidades entre os indivíduos comunicantes.
Objetivos: Busca-se discutir a natureza e as características da tríade de comunidades discursivas ali interagentes – do produtor, do usuário e do organizador/mediador - notadamente em uma perspectiva de auto-organização e em um movimento dinâmico de configuração helicoidal como uma alternativa para melhor compreender os processos, instrumentos e produtos envolvidos.
Métodos: Trata-se de uma reflexão de cunho teórico-especulativo, pautada em que um recorte da literatura internacional sobre organização do conhecimento em sua vertente sociocultural cotejado com as questões relativas às comunidades discursivas de modo subsidiar a argumentação sobre a natureza comunicativa desse contexto.
Resultados: Evidencia-se a necessidade de se considerar que os responsáveis pelo desenvolvimento dos processos de organização e representação do conhecimento assim como os responsáveis pela idealização e elaboração de sistemas de organização do conhecimento constituem igualmente uma comunidade discursiva que, por sua vez, deve estar em plena consonância com as duas outras de modo a propiciar uma ética transcultural de mediação que inclua as diferentes vertentes culturais e suas relações de modo a garantir uma efetiva garantia cultural.
Conclusão: Considerando que a organização do conhecimento constitui uma necessidade humana ao longo da história, acredita-se que a noção de auto-organização na tríade de comunidades discursivas envolvidas na organização do conhecimento – a da produção, a da recepção e a do tratamento – quando compreendida nos termos de uma visão sinergética, epistemológica e ontológica, confere maior significado teórico e melhor explicitação aos processos, instrumentos e produtos envolvidos.
Percursos metodológicos decoloniais: rompendo lógicas epistêmicas coloniais
Authors: Battestin Cláudia , Guedes Dariva Bernard , Lima Bruno Huffel de 
Published: September 2023

A escrita deste artigo resulta de uma investigação bibliográfica com perspectiva decolonial. Nele, objetiva-se socializar possibilidades e reflexões acerca dos percursos metodológicos reconhecidos no meio acadêmico, bem como aqueles problematizados com elementos reflexivos a partir da perspectiva decolonial, além de compreender como esse pensamento pode contribuir para uma formação decolonizadora. Na compreensão de que as relações humanas são atravessadas por uma racionalidade hegemônica que se configura por meio da estrutura de poder e controle colonial, buscamos sua superação fazendo uso da aproximação com epistemes inviabilizadas e invisibilizadas pela racionalidade eurocêntrica. São incipientes as pesquisas com práticas e metodologias decoloniais, porém, elas necessitam ser observadas e disseminadas na comunidade acadêmica com o objetivo de que tais discussões possam apontar para novas direções e possibilidades de validação das metodologias de pesquisa decoloniais. Esta pesquisa nos permite concluir que o desafiar-se a pesquisar sob a perspectiva decolonial significa romper com a hegemonia dos modelos metodológicos tradicionais, por meio do diálogo com eles, no desenvolvimento de pesquisas políticas e críticas à colonialidade do poder, saber e do ser.
Analisis Kepatuhan Minum Obat Pasien Diabetes Melitus Type 2
Authors: Agustina Elin , Ali Harokan  , Erma Gustina  
Published: September 2023

Diabetes mellitus membutuhkan pengobatan jangka panjang untuk mengendalikan kadar glukosa darah. Namun, tingkat kepatuhan pengobatan pada pasien diabetes sering kali rendah, yang dapat menyebabkan komplikasi serius dan memengaruhi kualitas hidup pasien. Penelitian ini bertujuan untuk mengetahui faktor yang berhubungan dengan kepatuhan minum obat diabetes melitus di Puskesmas Bumi Lampung Tahun 2023. Desain penelitian ini adalah kuantitatif dengan pendekatan crossectional. Populasi penelitian ini adalah masayarakat yang berkunjung berobat di Puskesmas Bumi Lampung. Sampel dalam penelitian ini berjumlah 97 orang. Cara pengambilan sampel menggunakan Purposive sampling. Sampel penelitian yaitu asayarakat yang berkunjung berobat di Puskesmas Bumi Lampung tahun 2023 yaitu berjumlah 97 orang. Penelitian ini telah di laksanakan pada tanggal 10 April 2023 sampai dengan 30 Mei tahun 2023. Pengumpulan data dengan menggunakan kuisioner. Analisis data bivariat menggunakan uji Chi-Square. Hasil penelitian menunjukan ada hubungan umur (p value 0,004) ,pendidikan (p value 0,000) , pendapatan (p value 0,010), pengetahuan (p value 0,002), dan sikap (p value 0,020), dengan kepatuhan minum obat diabetes melitus di Puskesmas Bumi Lampung Tahun 2023. Tidak ada hubungan jenis kelamin (p value 0,547), motivasi (p value 1,000), dukungan keluarga (p value 0,635) dan peran petugas kesehatan (p value 0,782) dengan kepatuhan minum obat diabetes melitus di Puskesmas Bumi Lampung Tahun 2023. Bagi Puskesmas Perlu adanya peningkatan pengetahuan pada masyarakat dengan cara sosialisasi atau penyuluhan pengobatan diabetes melitus.
Pengaruh Teknik Afirmasi Terhadap Tingkat Cemas Pada Pasien Gagal Ginjal Kronik Yang Menjalani Hemodialisis
Authors: Indra Frana Jaya KK  , Akbar M Agung 
Published: September 2023

Penyakit Gagal Ginjal Kronik ini biasanya ditandai dengan adanya penurunan fungsi ginjal bahkan hilangnya fungsi ginjal dalam waktu yang lama. Pasien GGK menjalani terapi Hemodialisis 1-2 kali setiap minggunya dan menghabiskan waktu beberapa jam akan membuat mereka mengalami ketegangan dan Cemas. Afirmasi merupakan salah satu terapi yang bisa digunakan untuk menurunkan tingkat Cemas kerja perawat. Penelitian ini bertujuan untuk mengetahuiPengaruh Teknik Afirmasi Terhadap Tingkat CemasPada Pasien Gagal Ginjal Kronik Yang Menjalani Hemodialisis. Metode penelitian ini menggunakan quasi-eksperimen dengan pre dan post test. Analisa data yang digunakan uji t-Test. Teknik pengambilan sampel pada penelitian ini adalah total sampling, jumlah sampel pada penelitian ini 50 responden, penelitian dilakukan dengan cara memberikan kuisioner HARS dengan menggunakan 14 item pertanyaan sebelum dan sesudah di Intervensi dengan teknik Afirmasi. Hasil uji statistik di dapatkan p-value=0,000 yang berarti terdapat perbedaan tingkat cemas sebelum dan sesudah intervensi teknik Afirmasi.
Development Of a Jealousy Scale in Romantic Relationship: A Validity and Reliability Scale
Authors: İpek Aslı Nur , Turhan Nihan 
Published: September 2023

The article presents the development and validation of a new measurement tool, the scale of Jealousy in romantic relationship (JRRS), designed to assess romantic jealousy in individuals aged 18 and above with or without a romantic relationship. The scale was developed through a literature review and tailored to the Turkish culture. The exploratory factor analysis revealed a three-dimensional structure, with the first dimension explaining 32.94% of the total variance, the second dimension explaining 11.34%, and the third dimension explaining 9.21%. The total variance explained by all three dimensions was 53.50%. The moderate correlation between the Anxious Attachment subdimension of the Experiences in Close Relationships Scale-Short Form (ECRS-SF) and the JRRS provided evidence of criterion-related validity, consistent with previous findings in the literature. As a result of the reliability analysis, the reliability value of the measurement tool was found to be .85 according to the Cronbach alpha. According to the sub-dimensions, reliability results were obtained as .83 for the social environment and past relationships factor, .83 for the jealousy perception factor and .71 for the perception of the waist factor. The JRRS was compared to other established scales measuring jealousy in romantic relationships, and the results further supported its reliability and validity. Overall, the study showed that the JRRS is a valid and reliable tool for assessing romantic jealousy in individuals.