bluuebunny/crossref_metadata_2025 huggingface dataset:
Propiedades psicométricas de una escala de Depresión basada en el Modelo de los Cinco Factores
Authors: Pablo Abal Facundo Juan , Lozzia Gabriela Susana , Attorresi Horacio Félix
Published: March 2023

Se presenta el proceso de construcción de una escala para medir la faceta Depresión según el Modelo de los Cinco Factores. Se realizó una revisión de las definiciones teóricas y operacionales de autores relevantes de este modelo. Luego se elaboraron 15 ítems iniciales, 3 de los cuales fueron eliminados por jueces expertos. Los ítems conservados se administraron a 1222 adultos de población general residentes en el área metropolitana de Buenos Aires, Argentina (50.8% mujeres, edad media = 33.2 años y DE = 11.8 años). Se seleccionó aleatoriamente un 35% de casos para depurar el instrumento con un análisis factorial exploratorio. El 65% restante se utilizó para corroborar la estructura interna con un análisis factorial confirmatorio y para ajustar el Modelo de Respuesta Graduada de la Teoría de Respuesta al Ítem. Los resultados muestran que los 10 ítems de la versión definitiva conforman una estructura unidimensional con adecuada consistencia interna. Se aportan evidencias de validez concurrente con EPQ-RA y SCL-90-R. La Función de Información revela que la escala mide con precisión elevada y constante en un rango extenso del rasgo. Se concluye que la escala permite valorar de manera satisfactoria las diferencias individuales en la tendencia a experimentar afectos depresivos.
Redes neuronales aplicadas al control estadístico de procesos con cartas de control EWMA
Authors: Suárez Castro Ruth Milena , Ladino Vega Iván Darío
Published: March 2023

Objetivo: Diseñar una red neuronal recurrente LSTM para predecir el valor promedio de la variable temperatura y evaluar así, la capacidad de la red para obtener valores similares a los cálculos del promedio móvil ponderado EWMA para mediciones individuales.

Metodología: Se obtuvieron 1768 registros de mediciones individuales de temperatura realizadas por un sensor, en el conjunto de datos denominado: Gas sensors for home activity monitoring data set.  Los datos de temperatura se representaron en una carta de control de promedios móviles ponderados exponenciales EWMA, a fin de obtener los valores de la media del proceso y de identificar que el proceso estuviera dentro del control estadístico.  Posteriormente se entrenó una red neuronal LSTM a una muestra de entrenamiento de 1184 datos con algoritmo Backpropagation que permitiera obtener valores similares a EWMA, los cuales se validaron en una muestra de prueba de 584 datos de temperatura.  

Resultados: El diseño de una red neuronal con una unidad en la puerta de entrada, 4 unidades en la puerta de olvido y 1 unidad en la puerta de salida entrenada con el algoritmo Backpropagation permitió calcular valores muy cercanos a los representados en la carta de control EWMA, con un MSE de 1.1405e-04.

Conclusiones: Las redes neuronales LSTM son una buena alternativa para el cálculo de valores EWMA, cuando se requiera hacer control estadístico de un proceso que genera gran cantidad de datos obtenidos de mediciones y no se cuente con un software para procesarlos.

Financiamiento: Fundación universitaria Los Libertadores
Effect of pH on the Synthesis of Silica Sol-Gel Tetraethylorthosilicate-Trimethylchlorosilan (TEOS-TMCS)
Authors: Andini Artha Monica , Azmiyawati Choiril , Darmawan Adi
Published: March 2023

Sol-gel synthesis of silica employing the co-precursor trimethylchlorosilane (TMCS) and the precursor tetraethylorthosilicate (TEOS) was accomplished. The purpose of this investigation was to ascertain how pH affected the properties of synthetic silica. The synthesized hydrophobic silica was characterized using FTIR, TGA, and GSA to determine the effect of pH adjustment on the functional group characters, thermal properties, and pore morphology. The ratio between TEOS/TMCS was fixed at 75:25 and varied the pH (4, 6, 7, 8, and 10) and the calcination temperature (without calcination, 300℃ and 500℃). FTIR analysis showed that the number of C-H and Si-OH groups in the xerogel decreased with increasing calcination temperature. Xerogel formed at pH 6 provides the highest thermal stability among other pHs. The results from the BET analysis revealed that changes in pH directly affect the physical characteristics of the surface, making the resulting gel network less rigid and more susceptible to shrinkage of pore volume and diameter in the atmosphere. Meanwhile, in an alkaline medium, continuous condensation will occur so that the pore diameter and volume decrease. The high pore diameter and volume imply that pH 7 is ideal for preparing xerogels.
The Effect of Cooking Treatment on Antioxidant Activity in Soybean Tempeh
Authors: Safitri Yulianti Annisa , Aminin Agustina L. N. , Mulyani Nies Suci
Published: March 2023

Indonesian people consume tempeh through various processing methods. Food processing by cooking has been reported to reduce the bioactive capacity contained in food ingredients. This study investigated the effects of food processing (frying, steaming, roasting, sautéing, and boiling) on antioxidants in soybean tempeh. The antioxidant activity of processed tempeh was measured using DPPH and reducing power methods. The results showed that the highest inhibition activity of the processed tempeh was achieved by roasting and boiling (40%). The roasting method yielded tempeh with the highest total phenolic and flavonoid content. Thus, the cooking method considerably influences the antioxidants contained in tempeh. The findings showed that tempeh processed through roasting and boiling has the highest antioxidant activity. The total phenolic and flavonoid profiles are not in line with antioxidant activity, which indicates that the contributors to antioxidant activity are not only phenolic compounds. The increase in antioxidant activity in soybean tempeh is suspected to be influenced by the non-phenolic bioactive peptide compounds found in tempeh.
Synthesis of Chitosan Derivative Compounds Through Chloroacetic Acid and Heparin Grafting and Their Application as Membrane Materials with Polyvinyl Alcohol (PVA)
Authors: Taqwa Shihandhanu Primadian , Djunaidi Muhammad Cholid , Lusiana Retno Ariadi
Published: March 2023

A chitosan membrane modified with chloroacetic acid with heparin (hep) and polyvinyl alcohol (PVA) has been successfully prepared. Chitosan was modified with chloroacetic acid through a nucleophilic substitution reaction to form N-carboxyl methyl chitosan (N-CMC) and then combined with PVA. N-CMC/PVA grafting with heparin was conducted using the immersion method and produced N-CMC/PVA.g.Hep membrane. This study aims to obtain a membrane with the best chemical and physical characteristics and the highest creatinine transport. Membrane characterization includes water absorption test, tensile strength, thickness, biodegradation, resistance to pH, and transport of creatinine and vitamin B12. Chemical characterization of active groups and morphology using FTIR and SEM. The characterization results show that the reaction of grafting chitosan using chloroacetic acid produces N-carboxymethyl chitosan (N-CMC). The N-CMC/PVA membrane has a creatinine transport capacity of 19.61%. The N–CMC/PVA.g.Hep membrane has a creatinine transport capacity of 24.81%. Supporting PVA improves the hydrophilicity and mechanical strength of the membrane.
Isolation and Antioxidant Activity of Flavonoid Compound in Ethanolic Extract of Celery Leaves (Apium graveolens L.)
Authors: Kholieqoh Alifa Husnun , Anam Khairul , Kusrini Dewi
Published: March 2023

Celery (Apium graveolens L.) is a plant that belongs to the Apiaceae family and is widely used as a medical plant for low blood pressure, heart tonic, and to prevent cardiovascular disease. This study aims to obtain flavonoid compounds, identify, and test the antioxidant activity of flavonoid compounds and crude extracts from celery leaves. The research procedures consisted of four steps, the first of which was a preliminary test. The second step involved isolating and separating flavonoid components by vacuum liquid chromatography, gravitational column chromatography, and preparative thin layer chromatography. The third step was to identify flavonoid compounds using reagent shift, FTIR, and LCMS/MS. And finally, antioxidant activity was evaluated using the DPPH method. The preliminary test result showed that the ethanolic extract of leaves and stems had a total flavonoid content of 13.99 and 2.46 mg QE/g of dry weight. Both dry leaves and crude extract of celery leaves contained alkaloids, saponin, flavonoid, tannin, quinone, and steroid/triterpenoid, as determined by phytochemical screening. Isolation and separation of flavonoids yielded A2.I and A2.II isolates, with respective weights of 8 mg and 14 mg. Identification of flavonoid compounds using reagent shift showed that two isolates have the basic structure of the flavone group. A2.I isolate had OH groups at 4’, 5, and 7, while A2.II isolate had OH groups at 3’, 4’, 5, and 7. The FTIR analysis revealed that both compounds contain functional groups, including O-H, C=O, C=C aromatic, C-O ether, C-O alcohol, and C-H aromatic ring. According to LCMS/MS analysis, the molecular weights of A2.I and A2.II were 270 g/mol and 286 g/mol, respectively. All of the identification methods for isolates showed that A2.I was apigenin and A2.II was luteolin. Antioxidant activity by DPPH method for a viscous extract of celery leaves, A2.I, and A2.II were 775.41, 288.95, and 184.35 µg/mL, respectively.
Isolation, Identification, and Antioxidant Activity of Flavonoid Compounds in the Ethanol Extract in Bandotan Leaves (Ageratum conyzoides)
Authors: Mutingatun Siti , Fachriyah Enny , Kusrini Dewi
Published: March 2023

Isolation of flavonoid compounds from the ethanol extract of Bandotan leaves (Ageratum conyzoides L.) has been successfully conducted. The structure of flavonoid isolates was identified using UV-Vis spectrophotometry with the addition of shear reagents and FTIR. In addition, the antioxidant activity of the isolates was determined and studied using the DPPH (2,2-Diphenyl-1-picrylhydrazyl) method. This study aimed to isolate, identify, and test the antioxidant activity of flavonoid compounds from Bandotan leaves. An antioxidant activity test was carried out on ethanol extract, and flavonoid isolates using the DPPH method. Based on this research, Bandotan leaf ethanol extract yielded 13.964%. The results of the phytochemical screening test revealed that the leaf powder and ethanol extract of Bandotan leaves contained alkaloids, flavonoids, saponins, tannins, quinones, steroids, and triterpenoids. The total flavonoid content of the ethanol extract of Bandotan leaves was 129.27 mg EQ/g extract. Identification of flavonoid isolates using a UV-Vis spectrophotometer showed that flavonoid isolates belong to the flavanone compound class with maximum absorption at a wavelength of 315 nm (band I) and 280 nm (band II). FTIR analysis showed that the flavonoid isolates had functional groups O-H, C-H aromatics, C-H alkanes, C=O, C=C aromatics, C-O ethers, C-O alcohols, and substituted aromatic rings. Identification of the structure of flavonoid isolates with a spectrophotometer with the addition of shear reagent and FTIR, presumably that the isolate was a 4’-hydroxy flavanone compound. The antioxidant activity of ethanol extract showed moderate antioxidant activity (IC50 118.19 µg/mL) and was classified as very weak (IC50 1185.5 µg/mL).
PERBEDAAN POLA PEMBERIAN MP-ASI ANTARA ANAK BERAT BADAN KURANG DENGAN BERAT BADAN NORMAL USIA 6 – 12 BULAN DI WILAYAH KERJA PUSKESMAS GUNUNG PATI KOTA SEMARANG
Authors: Anjani Habibah Alim , Nuryanto Nuryanto , Wijayanti Hartanti Sandi , Purwanti Rachma
Published: March 2023

Latar Belakang: Pola pemberian MPASI berpengaruh pada pertumbuhan bayi dan anak. Pemberian MPASI yang tidak tepat akan menyebabkan berat badan kurang pada bayi.Tujuan : Untuk menganalisis perbedaan pola pemberian MPASI antara bayi berat badan kurang dengan berat badan normal usia 6 – 12 bulan.Metode: Penelitian cross-sectional dilakukan di Kota Semarang. Subjek terdiri dari 28 subjek berat badan kurang dan 28 subjek berat badan normal yang diambil dengan metode purposive sampling. Variabel yang diteliti yaitu pola pemberian MPASI, tingkat kecukupan zat gizi, dan status gizi BB/U. Data karakterisik subjek dan pola pemberian MPASI meliputi waktu pemberian MPASI pertama, riwayat ASI eksklusif, riwayat ASI saat ini, jenis, frekuensi, porsi pemberian MPASI, dan responsive feeding didapatkan dari wawancara menggunakan kuesioner. Data tingkat kecukupan zat gizi didapatkan dari kuesioner food recall 3x24 jam. Berat badan kurang ditentukan dengan perhitungan Z-score BB/U -3 s/d <-2 SD, sedangkan berat badan normal ditentukan dengan Z-score BB/U -2 s/d +2 SD. Analisis bivariat menggunakan uji Chi-Square, Independent T-Test  dan Mann Whitney-Test.Hasil: Terdapat perbedaan porsi pemberian MPASI, tingkat kecukupan energi, karbohidrat, dan lemak pada kelompok bayi berat badan kurang dan normal (p=0,001; p=0,013; p=0,036; p=0,021). Tidak terdapat perbedaan tingkat kecukupan protein, riwayat ASI eksklusif, riwayat ASI saat ini, waktu pemberian MPASI pertama, jenis, frekuensi pemberian MPASI, dan responsive feeding pada kelompok bayi berat badan kurang dan normal (p>0,05).  Simpulan: Terdapat perbedaan porsi MPASI, tingkat kecukupan energi, karbohidrat dan lemak antara bayi berat badan kurang dan berat badan normal usia 6-12 bulan. Tidak terdapat perbedaan riwayat ASI eksklusif, riwayat ASI saat ini, waktu pemberian MPASI pertama, jenis, frekuensi  pemberian MPASI, responsive feeding, dan tingkat kecukupan protein antara bayi berat badan kurang dan berat badan normal usia 6-12 bulan.
FAKTOR YANG MEMENGARUHI KEJADIAN HIPERTENSI MASYARAKAT PESISIR (STUDI PADA MASYARAKAT WILAYAH KERJA PUSKESMAS KEDUNG II JEPARA)
Authors: Nafi' Silvia Ulin , Putriningtyas Natalia Desy
Published: March 2023

Latar belakang: Telah terjadi peningkatan prevalensi hipertensi pada masyarakat pesisir pantai di Kedung Jepara, pada tahun 2019 sebanyak 3,5%, pada tahuan 2020 sebanyak 4,3%, pada tahun 2021 sebanyak 5,0% masyarakat di wilayah kerja pesisir Kedung Jepara menderita hipertensi.Tujuan: Tujuan penelitian ini untuk mengetahui faktor risiko yang berhubungan dengan kejadian hipertensi pada masyarakat pesisir di wilayah kerja Puskesmas Kedung II.Metode: Desain penelitian yang digunakan adalah Cross Sectional. Penelitian telah dilakukan pada bulan Juni-Juli 2022 di Wilayah Kerja Puskesmas Kedung II. Teknis pengambilan sampel yang digunakan adalah Quota Sampling dengan responden sebanyak 100 responden penderita hipertensi yang berusia 45-59 tahun yang menderita hipertensi dan pengambilan data meliputi variabel jenis kelamin, obesitas, konsumsn i kopi, kebiasaan merokok,aktivitas fisik, konsumsi makanan laut dan kualitas tidur. Analisis data yang digunakan adalah analisis univariat menggunakan distribusi frekuensi,dan analisis bivariat menggunakan uji Chi Square.Hasil: Hasil penelitian didapatkan ada 97,6% responden obesitas dan 98,7% responden yang mengonsumsi makanan laut berlebih mengalami hipertensi serta terdapat hubungan jenis kelamin (p=0,046), obesitas (p<0,001), konsumsi kopi (p=0,037), aktivitas fisik (p<0,001), konsumsi makanan laut (p<0,001), kualitas tidur (p<0,001) dengan kejadian hipertensi pada masyarakat pesisir. Tidak ada hubungan antara kebiasaan merokok (p=0,072) dengan kejadian hipertensi pada masyarakat pesisir.Simpulan: Faktor yang memengaruhi kejadian hipertensi masyarakat pesisir di wilayah kerja Puskesmas Kedung II adalah jenis kelamin, obesitas, konsumsi kopi, aktivitas fisik, konsumsi makanan laut, kualitas tidur sedangkan kebiasaan merokok tidak menjadi faktor risiko kejadian hipertensi. Saran pada penelitian ini adalah perlu adanya peningkatan promosi kesehatan terkait penanganan dan pencegahan hipertensi kepada masyarakat pesisir.
ANALISIS KETAHANAN PANGAN RUMAH TANGGA DI WILAYAH PERTANIAN DAN PESISIR KABUPATEN DEMAK
Authors: Setyorini Dewi Tri , Mukson Mukson , Dwiloka Bambang
Published: March 2023

Latar belakang: Pangan merupakan sumber kehidupan yang sangat esensial, namun tidak semua pihak mempunyai kemudahan untuk mengakses pangan. Indonesia dikenal sebagai negara agraris sekaligus sebagai negara maritim. Rumah tangga petani dan nelayan yang menjadi sumber penyedia pangan justru terindikasi tidak tahan pangan.Tujuan: Penelitian ini bertujuan untuk menganalisis perbedaan ketahanan pangan rumah tangga di wilayah pertanian dan wilayah pesisir Kabupaten DemakMetode: Penelitian ini merupakan jenis penelitian observasional dengan desain studi cross sectional. Unit analisis dalam penelitian ini adalah rumah tangga petani dan nelayan di Kabupaten Demak. Sampel penelitian ditentukan secara proportional random sampling sebanyak 109 rumah tangga. Sumber informasi dalam penelitian ini adalah istri/ibu rumah tangga. Pengambilan data dilakukan melalui wawancara menggunakan food recall 2x24 jam. Variabel yang diteliti adalah variabel ketahanan pangan melalui parameter konsumsi energi dan pangsa pengeluaran pangan yang diambil dengan instrument berupa kuesioner. Analisis data menggunakan uji Independent t test.Hasil: Terdapat perbedaan sangat nyata (p=0,004) tingkat ketahanan pangan rumah tangga di wilayah pertanian dan pesisir. Persentase rumah tangga dengan kategori tahan pangan di wilayah pesisir lebih tinggi dibandingkan di wilayah pertanian. Rumah tangga tahan pangan di wilayah pesisir adalah sebanyak 51,06% sedangkan di wilayah pertanian sebanyak 35,48%.Simpulan: Ketahanan pangan di wilayah pesisir lebih tinggi dibandingkan dengan wilayah pertanian.
Opisy podróży na Bliski Wschód i do Afryki Północnej z lat 1801–1919 w zbiorach Uniwersytetu im. Adama Mickiewicza w Poznaniu
Authors: Jakubowski Filip
Published: March 2023

Artykuł dotyczy XIX-wiecznych opisów podróży na arabski Bliski Wschód i do Afryki Północnej, przechowywanych w zbiorach  Uniwersytetu im. Adama Mickiewicza w Poznaniu. W większości znajdują się one w Bibliotece Uniwersyteckiej, część w bibliotekach wydziałowych. Kolekcja ta, choć nie powstała w sposób celowy, składa się z 250 tytułów w ośmiu językach, z czego dwie trzecie to pozycje niemieckojęzyczne. Najwięcej książek pochodzi z Kaiser Wilhelm Bibliothek w Poznaniu. Kolekcja odzwierciedla rozwój tego gatunku piśmiennictwa w Europie w XIX wieku i pokazuje jego różnorodność.
Migawki z życia miasta. Murowana Goślina na fotografiach z lat 20. i 30. XX wieku
Authors: Baszko Agnieszka
Published: March 2023

Zbiory ikonograficzne Biblioteki Uniwersyteckiej w Poznaniu w 2021 roku wzbogaciły się o okazały album fotograficzny zawierający na 144 stronach ponad 650 fotografii dotyczących Murowanej Gośliny. Fotografie, głównie z lat 20. i 30. XX wieku, przedstawiają m.in. widoki ogólne miasta, architekturę, pomniki, dokumentują działalność różnych towarzystw (np. Bractwa Strzelców Kurkowych, Towarzystwa Przemysłowego, Związku Inwalidów Wojennych, Katolickiego Towarzystwa Robotników Polskich, Klubu Sportowego „Concordia”, Katolickiego Stowarzyszenia Kobiet, Stowarzyszenia Młodych Polek, Towarzystwa Chóru Kościelnego, Stowarzyszenia Muzycznego „Harmonia”) i instytucji (np. magistratu, szkoły powszechnej, urzędu pocztowego) oraz wydarzenia z życia miasta (np. obchody świąt państwowych i religijnych). Celem artykułu jest omówienie albumu, prezentacja wybranych fotografii i ukazanie na ich podstawie życia społeczności Murowanej Gośliny w dwudziestoleciu międzywojennym. Artykuł skupia się na latach 20. i 30. XX wieku i mieszkańcach narodowości polskiej (przede wszystkim tego okresu i tej społeczności dotyczą fotografie). Omówionych zostało również kilkanaście pocztówek z przełomu XIX i XX wieku oraz kilka fotografii związanych z ludnością niemiecką i żydowską.
Paciente con insuficiencia suprarrenal por mutación de novo en el gen NR0B1
Authors: Bravo Nieto Daniel , García Fernández Alba S. , Diaz Troyano Noelia , Giralt Arnaiz Marina , Arias García Andrea , Fernández Álvarez Paula , Campos Martorell Ariadna , Ferrer Costa Roser , Clemente León María
Published: March 2023

Objetivos

La hipoplasia suprarrenal congénita ligada al cromosoma X es una enfermedad rara con base genética conocida, que se presenta con insuficiencia suprarrenal e hipogonadismo hipogonadotrófico y expresión clínica variable.

Caso clínico

Paciente varón, de 26 días, que ingresó con síntomas compatibles con insuficiencia suprarrenal, hiponatremia e hiperpotasemia, requiriendo sueroterapia con suplementos de NaCl y fludrocortisona, consiguiéndose estabilidad clínica. Se descartó la hiperplasia suprarrenal congénita tras la medición de 17-OH-progesterona. El resto de hormonas estaban dentro de los intervalos de referencia, salvo la hormona adrenocorticotrópica (ACTH), sensiblemente por encima, y la aldosterona, por debajo. En los siguientes análisis se estudiaron los ácidos grasos de cadena muy larga para descartar adrenoleucodistrofia, el gen CYP11B2 (aldosterona sintasa), y se realizó una RMN para descartar otras alteraciones morfológicas. Todas estas pruebas resultaron normales. Finalmente, tras detectar déficit de cortisol en una analítica, se realizó un estudio genético más amplio donde se describió una mutación en el gen NR0B1, estableciéndose el diagnóstico de hipoplasia suprarrenal congénita.

Conclusiones

La hipoplasia suprarrenal congénita es una enfermedad de diagnóstico complejo debido a la variabilidad en la expresión clínica y el grado de alteración de las pruebas de laboratorio, requiriéndose un seguimiento exhaustivo y la realización de pruebas genéticas para llegar al diagnóstico.
On completeness of weak eigenfunctions for multi-interval Sturm-Liouville equations with boundary-interface conditions
Authors: Olgar Hayati
Published: March 2023

The goal of this study is to analyse the eigenvalues and weak eigenfunctions of a new type of multi-interval Sturm-Liouville problem (MISLP) which differs from the standard Sturm-Liouville problems (SLPs) in that the Strum-Liouville equation is defined on a finite number of non-intersecting subintervals and the boundary conditions are set not only at the endpoints but also at finite number internal points of interaction. For the self-adjoint treatment of the considered MISLP, we introduced some self-adjoint linear operators in such a way that the considered multi-interval SLPs can be interpreted as operator-pencil equation. First, we defined a concept of weak solutions (eigenfunctions) for MISLPs with interface conditions at the common ends of the subintervals. Then, we found some important properties of eigenvalues and corresponding weak eigenfunctions. In particular, we proved that the spectrum is discrete and the system of weak eigenfunctions forms a Riesz basis in appropriate Hilbert space.
Green synthesis, characterizations, and antibacterial activity of silver nanoparticles from Themeda quadrivalvis, in conjugation with macrolide antibiotics against respiratory pathogens
Authors: P. Ruban , S. J. L. Joji Reddy , Manickam Rajalakshmi , Rathinam R. , M. Syed Ali , Rajkumar S. , Sharma Shubham , Sudhakara P. , Eldin Elsayed Mohamed Tag
Published: March 2023

The current study has portrayed the synthetic mixtures of Themeda quadrivalvis using gas chromatography–mass spectrometry (GCMS), the combination of green silver nanoparticles (AgNPs) formed with macrolide antimicrobials. The counter microbial effects were investigated with various concentrates of plant compounds, AgNPs, and macrolide-formed AgNPs against respiratory microorganisms. GCMS examination has shown the presence of various substances that intensifies the chloroform concentrate of T. quadrivalvis. A total of 51 mixtures were distinguished, and furthermore, the most severe zone of restraint was found in chloroform removal and against Klebsiella sp. (18 ± 4.7 mm). It has been demonstrated that the green mixture of AgNPs containing macrolide anti-toxins, such as azithromycin, erythromycin, and clarithromycin, demonstrates extensive antibacterial activities against a wide range of microorganisms. In contrast, the green union of AgNPs also demonstrates their efficacy against a wide range of respiratory microbes. The particles containing numerous relatively small fragments that were observed in the scanning electron microscopy analysis were found to be 20 nm in size. Previous studies have focused on phytochemicals and green amalgamations of AgNPs, but not much detail has been provided on T. quadrivalvis. It has been reported that the two concentrates (a plant concentrate in combination with consolidated green nanoparticle macrolide anti-toxins). The present study aims to treat respiratory microorganisms with a green methodology approach using nanotechnology; this analysis primarily focuses on offering creative approaches to make drugs against respiratory microbes.
Em posse de liberdade
Authors: Fernanda Ribeiro Cunha Maria
Published: March 2023

As conquistas emancipacionistas da década de 1870 apontam para caminhos interessantes de pesquisa a respeito do trabalho compulsório. A atualização da lógica senhorial, na tentativa de controle e exploração da classe trabalhadora, dependia da construção de um aparelho de vigilância acerca dos meios de obtenção de propriedade, somente legitimados pelo trabalho. Nesse sentido, é possível analisar os pedidos de liberdade mediante pecúlio obtido por meio de terceiro, para discutir os significados sociais envolvidos nas dívidas contraídas por trabalhadores libertos, sobretudo envolvidas na garantia de trabalho. A proibição da liberalidade de terceiro na obtenção de pecúlio será analisada como maneira de controle por parte da classe senhorial na exploração do trabalho.
Trabalho produtivo e reprodutivo
Authors: Carvalho Junqueira Victoria
Published: March 2023

Esse artigo contrasta minhas leituras de O Capital (Livro I) com leituras de obras dos feminismos marxista, negro e decolonial voltadas ao debate e à articulação das categorias de classe com gênero e raça. As autoras feministas marxistas resgatam os conceitos, a teoria e a metodologia construída por Marx para pensar a opressão feminina e a luta de classes ao lado da “luta dos sexos”, através da teoria da reprodução social e da crítica da divisão sexual do trabalho. Autoras associadas aos feminismos negro e decolonial, por sua vez, apontam para os apagamentos de raça existentes tanto na obra marxiana, como no marxismo e no feminismo.
Ensino de História Antiga
Authors: Borges Ribeiro Júnior Fábio
Published: March 2023

Este artigo é uma reflexão sobre uma experiência de ensino de História vivida no período de estágio supervisionado do Curso de História da Universidade do Extremo Sul Catarinense. Durante o estágio, realizado em uma turma do Ensino Médio, foi desenvolvida uma atividade de ensino a partir das práticas religiosas existentes em Roma no Período Imperial. Inicialmente, o artigo apresenta uma discussão a respeito da união entre teoria e prática existente no estágio a partir da pesquisa e reflexão teórica. Posteriormente há a caracterização do tema da atividade de ensino realizada com os estudantes. Por fim, há uma discussão sobre a atividade realizada, observando seus fundamentos teóricos e os resultados alcançados pela ação docente.
Formação literária de uma nova nação
Authors: Augusto Mendonça Guasti Victor
Published: March 2023

O presente artigo tem por objetivo discutir o processo de formação do movimento Pré-Romântico na literatura e no teatro no Brasil, que tem início com a chegada da Família Real (1808) e permanece até 1836. Justifica a escolha do período de transição literária o fato de que é neste intervalo que os alicerces de uma literatura genuinamente brasileira têm suas bases lançadas. A passagem do Arcadismo para o Romantismo ocorre ao mesmo tempo em que o Brasil passa por profundas modificações políticas. Logo, diferente do que fora afirmado pelos grandes críticos de literatura e teatro do século XIX e XX, as obras publicadas durante este período não são pobres de conteúdo ou cópias da produção portuguesa, mas apresentam a defesa de valores liberais e do nacionalismo, utilizando-se do arcabouço arcádico, mas com uma linguagem mais popular e oralizada e uma menor preocupação com a estrutura textual.
Finite element analysis of a stemmed hip prosthesis to reduce stress shielding in the proximal femur
Authors: Bliss Oliver , Swadener JG , Pierce Gillian , Zidane Iham
Published: March 2023

A finite element analysis (FEA) was performed on four prosthesis designs with different internal structures within identical prosthetic stem geometry. A novel hexagonal structure akin to one of the strongest structures in nature is used internally in the stem. The hip implant designs were then analyzed for an applied force of 3227 N. This force was selected because a typical gait cycle generates forces up to 3.87 times the body weight in the hip joint. The FEA results were compared for various stem designs with rectangular cross-sections. The design objective for a hip stem is to have a low stiffness and stress shielding together with a very high fatigue life. The stress shielding reduction of the prothesis was measured by observing the change in stress distribution in a FE femur model before and after implant. Stress shielding was quantified volumetrically, and the surface stresses of the femur were considered to appraise any increased risk of periprosthetic fracture due to increased bone stress. Subsequently, the stems that had the lowest stress shielding models were then optimized. Results showed a reduction of stiffness of 18%, and a reduction in stress shielding of 30% compared to a solid stem.
A parametric study of insertion and retention forces in cantilever hook
Authors: Abdul Manan Siti Sarah , Nafis Muhammed
Published: March 2023

Adhesive bonding, mechanical fastening, and snap-fit are all ways for attaching plastic components together. Snap-fit is employed to assemble plastic parts because it is an efficient, cost-effective, and fast joining technique. When it comes to snap-fits, you have two options: separable and inseparable. The term separable refers to the ability of the components to be dismantled successfully without breaking, whereas inseparable refers to the plastic parts being permanently attached. This investigation focuses on cantilever snap-fit since it is frequently used in the automotive, aerospace, and other sectors. Numerous aspects and parameters affect the functioning of snap-fits, notably on the forces of the insertion and retention. The parameters are the feature thickness (Tb), beam length (Lb), beam width (Wb), base radius (Rb), mounting (α) and dismounting angle (β). The forces required to attach and detach the snap-fits are thought to increase as the insertion and retention angles increase. The results can be seen that higher insertion and retention angle contributes to higher insertion and retention forces as portrayed from Set 7 with the value of 1.1052 N and -1.0214 N.
Metakognitivna svjesnost studenata o slušanju na nastavi stranoga jezika
Authors: Jordan Kristina , Maroević Ana
Published: March 2023

U radu se razmatra slušanje kao vještina učenja stranoga jezika, u ovom slučaju na preddiplomskom studiju Talijanskoga jezika. To je vještina kojoj se često ne pridaje dovoljno pozornosti, a s ostale tri vještine (čitanje, pisanje i govorenje) put je k uspješnom učenju stranoga jezika. Cilj rada dobiti je uvid u metakognitivnu svjesnost studenata o njihovoj metodi slušanja stranog jezika na jezičnim vježbama talijanskog jezika. Istraživanje je provedeno prema predlošku upitnika MALQ (Metacognitive Awareness Listening Questionnaire) koji su predložili Vandergrift i Goh (2012), uz dva dodatna otvorena pitanja. Prema rezultatima upitnika studenti, s jedne strane, imaju pozitivan stav prema slušanju i prvi je dojam da su uspješni slušatelji. S druge strane, analiza njihovih odgovora, a posebno otvorenih pitanja, otkriva kako ne pokazuju dobro vladanje strategijama koje su potrebne za uspješno slušanje. Zaključujemo da je ovakav upitnik vrlo koristan alat u osvješćivanju problema i promišljanju o strategijama slušanja, a nastavnikova je uloga pomoći studentima svjesno razvijati strategije, kao put postizanju samostalnosti u njihovoj primjeni.
Marija Brida i istraživanje hrvatske renesansne filozofije
Authors: Skuhala Karasman Ivana
Published: March 2023

Marija Brida (1912. – 1993.) jedna je od znamenitijih hrvatskih filozofkinja i sveučilišnih profesorica filozofije koja je djelovala sredinom i drugom polovicom dvadesetog stoljeća. Školovanje i djelovanje Marije Bride znakovito je za razumijevanje okolnosti i razvoja filozofije i akademskog etabliranja na našem prostoru. Na temelju njezina života i djela mogu se očitati tematske mijene i ispreplitanje osobnih interesa s utjecajima društvenih i političkih okolnosti u kojima je djelovala. U ovom članku bavim se Bridinim doprinosom hrvatskoj renesansnoj filozofskoj baštini, s posebnim naglaskom na Jurju Dubrovčaninu i njezinom intenzivnom suradnjom s časopisom Prilozi za istraživanje hrvatske filozofske baštine.
Is It Time (Yet) to Shelve LGBTIQ Topics? The Contextual Adequacy of (De-)Essentialism as an Educational Strategy
Authors: Bartulović Marija , Kušević Barbara
Published: March 2023

The debate on the relationship between queer theory and identity politics, the hitherto dominant research framework with strong application potential, was expanded by establishing queer theory as a starting point for studies examining sexual and gender diversity in education. The point of contention became the question of the purposefulness of strategic essentialism, with a strong emphasis on the many pitfalls of insufficient intersectional understanding of identity, where sexual and gender diversity is but one dimension. Various pitfalls of de essentialism also became the subject of analysis. With such polarities in mind, in this article we present a part of the data collected within a research project aimed at LGBTIQ inclusiveness of educational institutions. The aim of this article is to analyse potential advantages and disadvantages of using a theoretically progressive strategy of de-essentialism in a heteronormative educational context. Data collected in four focus groups conducted with teachers in a number of Zagreb secondary schools show that, in their attitudes and daily educational practices concerning LGBTIQ topics, research participants are positioned at different points of the spectrum, varying from essentialist to de-essentialist, while the exact positioning is strongly determined by context. The concluding part of the article provides guidelines for future research.
Pregled i analiza kritika koncepta cjeloživotnog obrazovanja
Authors: Lukenda Anita , Iveljić Ana Marija
Published: March 2023

Cilj rada usmjeren je pregledu i analizi kritika upućenih konceptu cjeloživotnog obrazovanja razvijenog u okrilju UNESCO-a, a odnosi se na njegovu prvu razvojnu fazu tijekom 1970-ih godina. Radom na dokumentaciji izdvojene su kritike koje su se prvenstveno odnosile na teorijska promišljanja o konceptu i iz kojeg do izražaja dolaze obilježja kao što su (ne)jasna definicija cjeloživotnog obrazovanja, uključivanje neintencionalnih oblika učenja, uloga nastavnika u ostvarivanju koncepta i sl. Pregled kritika koncepta temelji se ponajprije na stajalištima predstavnika radikalne kritike, potom i na kritikama pripadnika analitičke filozofije odgoja i obrazovanja. Posljedično se iznose odgovori na iskazane kritike, a koje su dali zagovornici koncepta cjeloživotnog obrazovanja. U svrhu postizanja što objektivnijeg pregleda i analize kritika izdvojene su i kritike koncepta cjeloživotnog obrazovanja autora, koji su ujedno bili i njegovi zagovornici. Radikalna stajališta o ostvarenju cjeloživotnog obrazovanja unutar okvira sustava, kao i tvrdnje predstavnika filozofije odgoja i obrazovanja o proizvoljnom definiranju i shvaćanju koncepta, potaknula su daljnja propitivanja o razradi koncepta kako bi se u odgojno-obrazovnom diskursu postigla što viša razina suglasnosti i zajedničko razumijevanje ciljeva, a posljedično i smjer djelovanja u svrhu njegove implementacije. To nije moguće bez uvažavanja postojećih obilježja nacionalnih sustava odgoja i obrazovanja kojima bi krajnji cilj trebao biti stvaranje pretpostavki za odgovaranje na obrazovne potrebe svakog pojedinca, što je zapravo odraz humanističkog podrijetla koncepta.
¿Sujeto literario u objeto de arte? Los retratos de Teresa Wilms Montt
Authors: Gutiérrez León Anabel
Published: March 2023

El objetivo de este trabajo es analizar una serie de retratos elaborados, desde diferentes disciplinas artísticas, alrededor de la escritora chilena Teresa Wilms Montt. Su excepcional belleza y su trágica biografía son los motivos sobre los que se construyen las representaciones que le dedican, muchas veces en menoscabo de la valoración de su labor artística, que, hasta hace poco, ha ocupado un segundo plano, así como su rol autorial. La vida y figura de esta singular mujer ha encontrado eco en la pintura, el cine, el teatro y el retrato literario modernista, formatos para los que se ha convertido en objeto de arte y estudio; no obstante, su talento y el tiempo trascurrido están permitiendo que aflore el sujeto de arte que también ha sido.
Feasibility of predictive assessment of bending performance of CLT plates of Canadian hemlock
Authors: Xie Wenbo , Lu Yao , Wang Zheng , Wang Xiwei , Wu Xiaoli , Gao Zizhen
Published: March 2023

The correlation between the bending elastic modulus of lumbers along the primary direction and that of the resultant cross-laminated timber (CLT) plates in the full size suitable for slabs or wallboards was investigated to verify the feasibility of predicting the bending performance during the manufacturing of heavy building structures of this new type of material. A batch of Canada hemlocks lumber was graded based on a vibrational test that measures longitudinal elastic modulus. The elastic modulus and shear modulus in the transverse direction were also measured using the scheme of a torsional modal analysis of a cantilever plate. CLT were fabricated using the graded lumbers in sizes suitable for slabs or wallboards. The elastic moduli of these CLT products were measured using a conventional four-point static bending test. Finally, the static measurements of the elastic moduli of the CLT were compared with their predicted values that were calculated with the aforementioned data collected from the lumber pieces. The predicted elastic modulus along the primary direction of a CLT product agreed with the measured values. Therefore, the mathematical model of the CLT plate and the equation of its elastic modulus are feasible for the bending performance prediction in industrial production of CLT.
Effects of the type of lactic acid bacteria, hot-pressing temperature, and moisture content of fermented bamboo residue on the properties of self-bonding common particleboards
Authors: Guan Mingjie , Bai Liyanghan , Fu Rao , Han Yulong , Liang Hailian
Published: March 2023

Self-bonding bamboo particleboards were prepared via hot pressing of bamboo residue fermented by lactic acid bacteria. An orthogonal experiment was designed to investigate the effects of three factors (type of lactic acid bacteria used for fermentation, moisture content (MC) of the fermented residue, and hot-pressing temperature) on the resulting self-bonding particleboards. The bending strength and internal bonding strength of the prepared self-bonding particleboards were tested. Fracture characterization was performed on the cross-section of the prepared self-bonding particleboards after bending breakage. The hot-pressing temperature, moisture content (MC), and type of lactic acid bacteria of the fermented residue had a significant effect on the mechanical strength of self-bonding particleboards, and with increased hot-pressing temperature, the strength of self-bonding particleboards increased. Analysis of the cross-sectional morphology and porosity confirmed the significant effect of hot-pressing temperature on the density distribution of self-bonding particleboards. The self-bonding particleboard produced at the hot-pressing temperature of 180 °C, MC of 30%, and that used Lactobacillus plantarum as a fermentation strain showed the best overall performance and reached Chinese standard requirements for common particleboards.
Analysis of application of covid-19 vaccine in Mexico city by age and gender groups in the second wave of the pandemic
Authors: Jiménez Martha , Ríos Humberto , Gómez Pilar , Elena Tavera María , Junior Sandoval Raúl , Pérez Francisco , Martínez Ma. de los Ángeles , Lourdes García Itzel , Antonio Romero José , Rafael Armenteros Naisel , Antonio Castellanos Pablo
Published: March 2023

Considering the importance of giving continuity to economic activities that have been partially suspended by the global SARS-CoV-2 virus pandemic, the impact of virus contagions with the application of the vaccine was analyzed in Mexico City, in men and women by age groups in the second wave of the virus, from 28-June-2021 to 01-September-2021. Two Poisson regression panel models were performed by random effects by gender and age groups and the variables: infections, dose, applied vaccine, and diseases. A decrease in contagions was found with the AstraZeneca, CoronaVac, Pfizer, and Sputnik vaccines for men aged 18 to 29 years, AstraZeneca and CoronaVac for women aged 18 to 29; and AstraZeneca and Pfizer for men and women ages 50 to 59, as well as Sputnik for men and women over 60. It is concluded that COVID-19 vaccines act differently according to gender and age group. Furthermore, the vaccine that helped reduce contagions with the greatest impact was AstraZeneca for the group of 50 to 59 years old.
The BFP (Benford-Fibonacci-Perez) method validates the consistency of COVID-19 epidemiological data in France and Italy
Authors: Claude Perez Jean
Published: March 2023

The Benford method can be used to detect manipulation of epidemiological or trial data during the validation of new drugs. We extend here the Benford method after having detected particular properties for the Fibonacci values 1, 2, 3, 5 and 8 of the first decimal of 10 runs of official epidemiological data published in France and Italy (positive cases, intensive care, and deaths) for the periods of March 1 to May 30, 2020 and 2021, each with 91 raw data. This new method – called “BFP” for Benford-Fibonacci-Perez - is positive in all 10 cases (i.e. 910 values) with an average of favorable cases close to 80%, which, in our opinion, would validate the reliability of these basic data.
COVID-19 hesitancy and vaccine attitudes among African American and Nigerian college students
Authors: R Smith Calvin
Published: March 2023

This cross-sectional study examined COVID-19 attitudes and vaccine hesitancy among African American and Nigerian college students (N=189). African American and Nigerian college students were sampled from regional universities within the United States and Nigeria. Participants completed the World Health Organization (WHO) Vaccine Hesitancy Scale (VHS; 2014) and sociodemographic questions to assess attitudes, primarily vaccination hesitancy, toward COVID-19 vaccination. Independent t tests revealed no significant differences between the nationalities and any hesitancy in taking the COVID-19 vaccine (t(167)=.334, p=.739). However, there was a significant effect for trust in the COVID-19 vaccine (t(174)=-3.42, p=<.001), with American students (M=0.59; SD=0.50) showing more trust than Nigerian students (M=0.34; SD=0.48). In addition, there was a significant effect for the overall general support of vaccines, t(176)=2.43 p=.016, with Nigerian students (M=0.86; SD=0.35) showing more favor than American students (M=0.71; SD=0.46). Additional analyses associated with the cross-cultural comparisons were conducted and discussed.
Determinants of hypertension crisis and stroke among hypertensive patients in South Wollo and Oromia special zones public hospitals
Authors: Tegegne Belachew , Goshiye Debernesh , Mengesha Zemen , Wuhib Mekuriaw
Published: March 2023

Background: Uncontrolled hypertension results in hypertension crisis, and it is an important public health concern around the world. The incidence of complicating hospitalizations with hypertension continues to grow and is associated with increased mortality and adverse discharge. Hypertension crisis and stroke are caused by numerous factors; however, there is a paucity of studies to identify determinants of hypertension crisis and stroke in Ethiopia, particularly the study area. Objective: To identify determinants of hypertension crisis and stroke among hypertensive patients in South Wollo zone and Oromia special zone public hospitals, 2022. Methods: An institution based cross-sectional study was conducted among 416 participants in South Wollo and Oromia special zones public hospitals. Systematic random sampling technique was used to select study participants. Data were entered into Epidata version 3.1 and analyzed using Statistical package for social sciences version 23. Variables having P<0.25 in binary logistic regression was retained in the multivariable analysis to control the effect of confounding. Finally, determinants were identified based on adjusted odds ratio along with 95% confidence level at p-value less than 0.05. Model fitness was checked using Hosmer-Lemshow test. Results: In this study, the magnitude of hypertensive crisis was 35.6%(95%CI:31.1,40.4). Age(41-60years)(AOR=0.76,95%CI:0.42,0.98), Social support(AOR=0.82,95%CI:0.41,0.93), living in urban(AOR=0.56,95%CI:0.24,0.86) and good medication adherence(AOR=0.48,95%CI:0.29,0.83) were determinants of hypertensive crisis. Another, the magnitude of stroke was 5.0%(95%CI:3.1,7.8). Rural residence (AOR=3.4,95%CI:1.23,9.44), Systolic blood pressure (AOR=9.6,95%CI:2.71,34.06), family history of stroke (AOR=0.26,95%CI:0.07,0.79) were determinants of stroke. Conclusion and recommendation: The magnitude of hypertensive crisis was high, whereas the magnitude of stroke was relatively low. Age 41-60 years, urban residence, having social support and good medication adherence were determinants of hypertensive crisis, while rural residence, systolic blood pressure and family history of stroke were determinants of stroke. Thus, health care providers should screen aged patients and patients with family history of stoke.
Sarcopenia and hip osteoarthritis: possible role for targeted electrical and biophysical muscle stimulation applications
Authors: Marks Ray
Published: March 2023

Background: Hip osteoarthritis- a painful oftentimes longstanding progressively disabling condition that occurs predominantly among sizeable numbers of older adults may be detrimentally impacted by an atrophic muscle condition known as sarcopenia. Aim: This mini review examines the possible utility of electrical or magnetic muscle stimulation for mitigating sarcopenic muscle mass declines that may be age or disease associated or both among older adults diagnosed as having early or late stage hip osteoarthritis. Methods: Peer reviewed literature on hip osteoarthritis discussing sarcopenia, as well as any evidence that electrical or magnetic muscle stimulation as applied to foster muscle mass increments are relevant to ameliorating this condition were sought and examined. Results: Many reports show hip osteoarthritis remains a highly debilitating disease to counteract and is a condition where the surrounding muscles may be atrophic. While most point to exercise and nutrition as suitable muscle interventions for countering sarcopenia, a favorable role for electrical stimulation cannot be ruled out. Conclusions: There is a possible missed opportunity that implies muscle preservation at the hip through electrical stimulation will be beneficial for fostering function at all stages of hip joint osteoarthritis progression, even if surgery is forthcoming, and should be studied further.