bluuebunny/crossref_metadata_2025 huggingface dataset:
C-prenylation of 1,3 dihydroxyxanthone: synthesis, characterization and antibacterial activity
Authors: Yuanita Emmy , Jannah Baiq Khaeratul , Ulfa Maria , Sudirman  , Ningsih Baiq Nila Sari , Dharmayani Ni Komang Tri
Published: February 2023

Prenylated 1,3-dihydroxyxanthone has been successfully synthesized using Prenyl bromide and KOH. Characterization of the synthesized compound using Infra Red (IR) and Nuclear Magnetic Resonance (1H-NMR) showed that monosubstituted c-prenylation was occurred at carbon number 2 to form 1,3-dihydroxy-2-prenylxanthone. The synthesis result was a yellow-brown paste with a yield of 43.09%. This prenylated 1,3-dihydroxyxanthone had moderate antibacterial activity against Escherichia coli with an inhibition zone > 5 mm at a concentration of 15%.
CONSTRUÇÃO DE EXPERIMENTOS COM MATERIAIS RECICLADOS E ALTERNATIVOS PARA O ENSINO DO ELETROMAGNETISMO
Authors:   , Mota Neila Gomes , MIRANDA CLEBSON CAXIAS
Published: February 2023

O estudo do eletromagnetismo na disciplina de física no ensino médio possui conteúdo com conceito abstrato tornando a compreensão um tanto difícil, isto leva muitos alunos ao desinteresse pela disciplina. Este trabalho propõe a construção de experimentos com a participação dos próprios alunos utilizando materiais reciclados, alternativos e de baixo custo como forma de tentar reverter esse quadro. Os experimentos propostos evidenciam os conceitos eletromagnéticos de forma interativa, o que favorece a compreensão levando os alunos ao questionamento, em consequência o interesse pelo conhecimento. Para o desenvolvimento deste trabalho utilizou-se os seguintes referencial teóricos: Jean Piaget, Lev Semenovitch Vygotsky, Paulo Freire, Orientações Curriculares para o Ensino Médio, PCN, ensino médio. A confecção dos experimentos seguiu sequência didática da Física do 3º ano do ensino Médio. Todos os alunos participaram ativamente da construção com expectativa de comprovar se os resultados obtidos seriam como o esperado. Devido o tempo alguns experimentos tiveram de ser confeccionados previamente.
Voices of Marginalized Families in Early Intensive Autism Treatment
Authors: Mello Melissa , Shaw Melanie , Wardlow Rebecca
Published: February 2023

This is a qualitative, phenomenological study of parents with children with autism who come from non-White backgrounds (N=7). Subjects were interviewed via recorded phone calls, during which they were asked a standard set of questions pertaining to their experiences with in-home family and child treatment. The problem examined in this study was the inequity experienced by families of color who have at least one child with autism and who received in-home early intervention autism services. Parents were interviewed to determine which aspects of treatment were perceived to be effective. The data were coded for emerging themes, with special attention given to opportunities for service amendment, seeking maximal perceived effectiveness. Families benefitted from an individualized approach to treatment that considered the family context, and culture, designed by listening to the family’s needs, concerns, and availability.   Assuming a one-size-fits-all approach, based on recommendations not made with diverse family backgrounds in mind, was less effective. Future directions in the field should include improved training for psychologists on cultural competence, encourage self-reflections on bias, and training on the development of individualized treatment plans.
Factors affecting job stress among physical therapists during the COVID-19 pandemic in Saudi Arabia
Authors: Subbarayalu Arun Vijay
Published: February 2023

Background: Physical therapists (PTs), like other healthcare professionals, are susceptible to job stress when involved in patient care, and several factors contribute to it. Therefore, this study aims to assess PTs’ knowledge, attitude, and practices (KAP) adopted by PTs during the COVID-19 pandemic and its impact on their job stress.

Methods: A cross-sectional design was used. 300 PTs from the government and private healthcare organizations in Saudi Arabia were randomly picked and invited to participate. Data were collected using a pre-tested content-validated KAP tool using a Google Form between January and March 2022. Data were analyzed quantitively through SPSS 24.0.

Results: The findings revealed that 85% of PTs whose job involves direct contact with the patients are susceptible to higher stress (perceived stress score [PSS]=22.82) than others. Specifically, female and unmarried PTs are prone to more job stress than others (p<0.05). In addition, PTs who were apprehensive about managing COVID-19 patients and worried about acquiring COVID-19 disease are prone to more job stress. Lastly, 89% of PTs who adopted the practice of wearing N-95 masks and proper handwashing techniques (>80%) experience less stress than others (p<0.05).

Conclusion: The KAP of PTs influences job stress during the COVID-19 pandemic. PTs with sufficient knowledge about measures to adopt, show a positive attitude, and practice wearing proper PPEs, handwashing procedures, and waste disposal systems during patient care are prone to less job stress than others.
The model of screening for preeclampsia in the second and third trimesters of gestation
Authors: Berlinska Liudmyla , Marichereda Valerie , Rohachevskyi Oleksandr , Volyanska Alla , Lavrynenko Ganna
Published: February 2023

Purpose: Preeclampsia (PE) is a specific syndrome of multiple organ insufficiency in case of pregnancy, which is included in the panel of major obstetric syndromes and is among the main causes of maternal morbidity and mortality in the whole world.

Material and methods: We conducted a prospective cohort study of 91 pregnant women to evaluate the effectiveness of integrated use of maternal risk factors (2019 International Federation of Gynecology and Obstetrics recommendations), placenta location (ultrasound at 18-20 weeks of gestation), and serum cystatin C (at 18-36 weeks of gestation) in screening for pe in the second and third trimesters of gestation.

Results: In the subgroup of pregnant women with cystatin C levels greater than 1.0 mg/L (27 women), PE developed in 26 women, which is 96.29% in percentage terms. When calculating GFR for cystatin C in a group with PE there was a significant violation of the renal filtration system -52.46±2.08 (95% CI, 48.39-56.54), while in healthy group the indicator is within normal limits -97.6±1.64 (95% CI, 94.38-100.82). In the analysis of the ratio of cystatin C levels more than 1.0 mg / l and the development of PE, a sensitivity of 98.46%, specificity of 100% and accuracy of 98.9%, p<0.001.

Conclusions: The data show that the combined model of maternal factors, ultrasound of the placenta and serum cystatin C, is prognostically effective in pregnant women in the second and third trimesters of gestation and is a reliable marker for the development of pe.
Assessment of students’ understanding of physical phenomena through argumentative qualities of written texts
Authors: Durango-Urrego John Henry , Castro Walter F. , Goizueta Manuel , Jaramillo López Carlos Mario
Published: February 2023

We present a qualitative study aimed at devising a theoretical-methodological tool to assess students’ conceptual understanding of physical phenomena through the argumentative qualities of their written texts. The proposed relationship between argumentation and understanding is elaborated through the notions of knowledge, purposes, methods, and communicative forms, as well as the use of data, warrants, modal qualifiers, claims, and rhetorical resources. In order to exemplify the tool’s use, the current understanding of six students attending a physics seedbed course was assessed according to four levels: naïve, novice, apprentice, and mastery. We then discuss the possibilities and limitations of the tool and the need to broaden the assessment of students’ understanding to include argumentative tasks in the classroom.
Advanced gastric cancer in a young-age patient
Authors: Kajihara Yusaku
Published: February 2023

N/A
The protective role of selenium in an experimental high fructose corn syrup exposure
Authors: Sanli Esme Ozlem , Savas Hasan Basri , Sozen Mehmet Enes , Dinc Elina
Published: February 2023

Objective: Nowadays, fructose is recognized as a significant health threat. Prepared foods containing fructose are consumed more because they do not create a feeling of satiety. Selenium is an essential trace element with antioxidant and cell protective properties. In this study, the effect of high fructose corn syrup, which is used as a sweetener in many foods and beverages and consumed during pregnancy, and the possible protective role of selenium in this effect were investigated and examined.

Methods: Fertilized specific pathogen-free eggs were used in our study. These eggs were divided equally into four groups. Each group was allocated 10 eggs containing viable embryos. These groups are pre-process control, post-process control, high fructose corn syrup (HFCS-55), and high fructose corn syrup and selenium (HFCS-55+Se 10-6) groups. Pellets containing and containing no active substance (HFCS-55, HFCS-55+Se 10-6) were carefully placed on the chorioallantoic membrane (CAM) of each egg in these groups. Oxidative stress status in all groups was determined by total oxidative stress (TOS) and total antioxidant capacity (TAC) methods.

Results: In our study, a significant increase in TOS levels and a significant decrease in TAC levels were observed in egg groups given HFCS compared to other groups (p<0.05). The OSI value was shown to be lower in the group given HFCS+Se.

Conclusion: As a result, HFCS was shown to increase oxidative stress. In line with our data, it has been shown that Se, plays a protective role against oxidative stress.
The essence of Chinese Taoist medical philosophy
Authors: Junheng Sun  , Xinyu Zhang  , Tan Gong
Published: February 2023

The Chinese Taoist medicine has a deep foundation in natural philosophy. It not only respects nature, rationally arranging life and health in accordance with the laws of nature, but also emphasizes nurturing the spirit and peace of the mind. Integrating physiotherapy, psychotherapy, spiritual belief therapy and social therapy, it has a holistic, dialectical, comprehensive and diversified medical model with practical healthy methods on seasons,food and mind. The secret of Chinese Taoist medicine is to advocate the harmony among human body and mind, inside and outside, nature and society.
Flipped classroom learning model: It’s effect on the academic performance of science students in the distance learning
Authors: MANILYN U. OBIAS
Published: February 2023

This action research aims to assess the effect in the academic performance level of the SHS learners through the utilization of Flipped Classroom Learning Model in teaching earth and Life Science. Specifically, this inquiry aimed to: (1.) determine the competency-based performance levels of SHS learners in Earth and Life Science for the first quarter in the Learning Distance Modality; (2. ) find out the extent of acceptability of Flipped Classroom Learning Model interventions, innovation, and strategies to the improvement of learning outcomes in ELS in Distance Learning Delivery Modality and ;(3.) ascertain the effect of the implemented interventions, innovations, and strategies on the improvement of the learners’ academic performance in ELS. This study adopted the Descriptive-Evaluative method of research. It utilized descriptive survey questionnaire, and informal Interview. Purposive sampling design was used to determine the three hundred nineteen (319) students (males and females) from six Grade 11 classes of Don Servillano Platon Memorial National High School in Tinambac, Camarines Sur, Philippines. The data were analyzed and interpreted using mean, and frequency count. The data revealed that the competency-based performance levels of SHS learners in Earth and Life Science for the first quarter in the Distance Learning Delivery Modality was improved. The data for was generated from SF 9 and or SF10 of learners in for the first quarter. In line with the extent of acceptability of Flipped Classroom Learning Model interventions, innovations, and strategies to the improvement of learning outcomes in ELS in Distance Learning Delivery Modality gathered from the questionnaire in five-point Likert Scale have brought into varied rate. Most of the FCL interventions, innovations and strategies were highly accepted. However, the utilization of e- aklatan and e-assessment tool were accepted. These was accounted to the unstable internet signal in some remote areas.
Development and validation for the simultaneous estimation of olmesartan medoxomil and hydrochlorothiazide by using RP-HPLC methods
Authors: Anumalagundam Srikanth  , Govindarao Yedlapalli  , G Srikanth  , Gummalla Lakshmi Harathi  , Singh Sarika Anil
Published: February 2023

A simple, Accurate, precise method was developed for the simultaneous estimation of the Olmesartan Medoxomil and Hydrochlorothiazide in Tablet dosage form. Chromatogram was run through Inertsil -ODS C18,250 x 4.6 mm, 5m. Mobile phase containing Methanoland Bufferin the ratio of 80:20 was pumped through column at a flow rate of 10ml/min. Optimized wavelength for Olmesartan Medoxomil and Hydrochlorothiazidewas 260nm. Retention time of Olmesartan Medoxomiland Hydrochlorothiazide were found to be 3.270min and 4.566 min. %assay was obtained as 99.91% and 99.95% for Olmesartan Medoxomiland Hydrochlorothiazide respectively. Regression equation of Olmesartan Medoxomilis y = 30712x - 31891, and y = 16499x + 8683. Of Hydrochlorothiazide.
Real-life application and appreciation of mathematics of grade eight (8) students
Authors: Rabia Abdulrahim  , Elaine De Mesa  , Prances Ann Roxas
Published: February 2023

This study was conducted to improve the level of appreciation of grade eight (8) students of Mathematics using real-life application in the lesson. Both qualitative and quantitative data collection techniques were used for collecting data. The qualitative data was collected using structured interviews and checklist observation. While quantitative data was collected using a pre-survey and post-survey. As the researchers analyzed and interpreted the data gathered from the pre-survey and post-survey, the result showed that the level of appreciation for mathematics improved. Also, there is a significant difference between the level of appreciation for mathematics before and after implementing the intervention. However, students seemed to appreciate mathematics when the lesson was taught in a traditional manner, but it could be improved if it were taught and applied in a real-life situation. Therefore, applying and utilizing real-life scenarios in teaching mathematics can improve students’ appreciation of the subject.
THE AMERICAN WOMEN FROM THE SIXTIES: AN ANALYSIS OF TATE TAYLOR’S THE HELP
Authors: Tanaka Elder Koei Itikawa , Miranda Baia Camila
Published: February 2023

Directed by Tate Taylor in 2011, The Help takes place in the United States in the decade of 1960s and portrays the oppressive condition of black domestic servants. Assuming that the issue of racism in the United States places black women as “less women” than others in society (DAVIS, 1981), this bibliographic research analyzes the social perspective of black and white women in the 1960s, establishes the relationship between domestic workers and their bosses, and how their different position in society influences that relationship. Our analysis also tries to understand the role that racism plays in the narrative of this film.
Escola de Frankfurt e ficção científica: diálogos entre teoria crítica, indústria cultural, marxismo e cinema
Authors: Lachowski Victor Finkler
Published: February 2023

Esta pesquisa tem como objetivo estabelecer conexões entre temáticas trabalhadas pela Teoria Crítica da Escola de Frankfurt e o gênero de ficção científica no cinema através de uma revisão bibliográfica, teórica e conceitual. Por meio de um debate sobre diferentes definições de sci-fi são expostas particularidades de cada perspectiva. Após algumas constatações, são apresentadas as noções estéticas que permeiam as concepções de arte e cultura dos pensadores de Frankfurt, bem como os conceitos de Indústria Cultural, fetichização e reificação, e como esses fenômenos são compreendidos dentro do cinema de ficção científica a partir de algumas exposições fílmicas e acadêmicas. Assim, o sci-fi é categorizado como o gênero que possibilita dialogar e problematizar de maneira dialética as relações e contradições da sociedade capitalista com a ciência e tecnologia, além de apontar alternativas de convergência entre as perspectivas frankfurtianas e as formas de se fazer e pensar cinema.
A presença do ensaio na poesia e no Cinema brasileiro atual
Authors: Feltrin Hector Rodrigues
Published: February 2023

Arlindo Machado, professor da Escola de Comunicação e Artes da Universidade de São Paulo (ECA-USP), cunhou de “filme-ensaio” algumas produções cinematográficas cujo núcleo se dá pelo despojamento de sua linguagem fílmica, a qual é atravessada por diferentes traços: memorial, ficcional, documental, público, privado e podendo inserir por vezes a figura do eu (cineasta) ao produto audiovisual. Na literatura, tal presença não é novidade, pois existem inúmeras obras carregadas de gestos autorreflexivos, como por exemplo, o livro de poemas Tudo pronto para o fim do mundo (2019), escrito por Bruno Brum. A pretensão central deste artigo é discutir a presença do ensaio para tematizar e interpelar o gesto criativo, a memória e a decorrência de impasses sócio-políticos no Brasil atualmente. Para tanto, tomaremos como principais objetos de análise o referido livro de Bruno Brum e, também, o filme #EAGORAOQUE (2020), dirigido por Jean-Claude Bernardet e Rubens Rewald, o que não excluirá a exposição de outras obras contemporâneas cabíveis nas reflexões aqui propostas.
Dramaturgia no espaço e espaço na dramaturgia: a arquitetura como enredo e personagem na obra cinematográfica “Meu tio”, de Jacques Tati
Authors: Rossete Jr. Everton Nazareth , Cox Elisa Pagliarini , Leite Mário Cézar Silva
Published: February 2023

Embora a dramaturgia utilize o diálogo como uma das principais formas de apresentar o drama e as relações pessoais resolvendo seus problemas e conflitos através da ação, os cenários não são somente palco e aporte físico para as ações, eles podem também ser a cena, o enredo, as personagens, antagonista e protagonista e muitas vezes até o próprio conflito. Na película “Meu Tio”, de Jacques Tati, ainda que haja texto dramatúrgico, falas, enredo, personagens e outros elementos convencionais da dramaturgia, pode-se dizer que as protagonistas são as duas residências contrapostas na obra. Pois, são nelas, por elas, e através delas que as questões abordadas se apresentam, se conflitam, e na medida do possível, se resolvem. Assim, este artigo apresenta como os espaços desse filme ditam não somente a forma dos personagens viverem, mas também a construção da narrativa do enredo, assumindo um papel crítico, moldando a própria ação numa crítica caricata aos dogmas do Movimento Moderno na Arquitetura e Urbanismo.
Identidades do negro em “Filhas do vento”, de Joel Zito Araújo
Authors: Santana Terezinha Richartz , Rodrigues Elaine de Souza Pinto
Published: February 2023

Propomos com este artigo, refletir sobre os modelos positivos de identidades do negro a partir do longa-metragem ficcional Filhas do Vento, dirigido por Joel Zito Araújo e lançado em 2005. Para tanto, analisamos como essa narrativa fílmica apresenta o lugar e o status do negro na sociedade brasileira. Assim, tomamos como pressuposto o multiculturalismo e a existência de diversas identidades nacionais, uma vez que estas são mutáveis. Além disso, discutimos a história do negro que foi condenado por uma sociedade escravista à condição de escravizado, nos envolvendo em um embate que desestrutura conceitos estabelecidos socialmente e faz emergir uma discussão necessária e urgente sobre o desenvolvimento da representatividade e da identidade afro-brasileira, suas relações gerais e singulares e o enfrentamento das recusas e discriminações que marcam uma sociedade preconceituosa, que se mascara sob a ideia de democracia racial.
“Eu pertenço a um grupo de seres malditos” das revoluções documentais e da revelação de Santiago
Authors: Bressan Olivia
Published: February 2023

O artigo a seguir pretende evocar o método do documentário participativo proposto pelo antropólogo Jean Rouch e investigar a influência da escola participativa em Santiago (2006), obra de João Moreira Salles. Também busca compreender de que forma a adoção da metodologia participativa foi essencial para que o diretor conseguisse montar seu filme depois de tantos anos de bloqueio criativo. Ainda que tenha dedicado várias diárias em 1992 gravando com Santiago, o antigo empregado da mansão dos Moreira Salles e protagonista do filme, é apenas em 2004 que o diretor chega à conclusão de que ele precisaria se colocar também como personagem, contar de que maneira sua história como um homem abastado se relaciona com a do mordomo. Salles, então, decide se expor  em primeira pessoa no documentário, admitindo seus erros e acertos durante as gravações. Mesmo que a produção do documentário tenha feito de Santiago um personagem incontornável na cinematografia brasileira, o que se pretende perscrutar nesse artigo são os ganhos do filme em revelar o jogo de cena e, ao fazer isso, colocar em debate as implicações éticas e políticas do cineasta com sua câmera, as relações hierárquicas estabelecidas entre documentarista e documentado.
Potential of Carbon-Chitosan Composite as Biosorbent of Heavy Metal Cu(II)
Authors: Mangallo Bertha
Published: February 2023

Penelitian ini bertujuan untuk mengembangkan teknologi adsorpsi dari sumber-sumber bahan alam (biosorben), khususnya mengoptimalkan potensi komposit kitosan sebagai biosorben untuk pengolahan limbah logam berat. Target yang ingin dicapai dari penelitian ini adalah memperoleh teknologi pembuatan komposit carbon-kitosan dengan formulasi dan karakteristik dari komposit kitosan yang memiliki daya adsorpsi  maksimum terhadap logam Cu(II). Studi karakteristik dari komposit kitosan dilakukan dengan menggunakan FT-IR, sedang kapasitas adsorpsi ditentukan dengan AAS. Tahapan penelitian meliputi tahap  isolasi kitin dari cangkang udang, tahap konversi kitin menjadi kitosan, tahap sintesis karbon aktiv dari kernel inti kelapa sawit, tahap sintesis komposit carbon–kitosan (KCK), dan tahap karakterisasi dan uji adsorpsi komposit kitosan terhadap logam Cu(II). Hasil analisis daya adsorpsi komposit kitosan menunjukkan bahwa formulasi komposit Carbon-Kitosan (KCK) yang memberikan daya adsorpsi terbesar terhadap logam Cu(II) adalah pada perbandingan 1:10 (w/v), yaitu sebesar 2,3037 x 10-4 mol/g.
EVALUASI PENGARUH LAJU ALIR POMPA INJEKSI TERHADAP TEKANAN POMPA INJEKSI PADA STASIUN PENGUMPUL UTAMA B JATIBARANG FIELD
Authors: Izzati Fifi , Riska Laksmita Sari Riska Laksmita Sari , Saptandro Adhy Rahutomo
Published: February 2023

After a certain period of time, the reservoir's pressure will drop to the point where petroleum can no longer flow naturally. Because of the decrease in oil production, a well will no longer have economic value. Artificial lifts or specific methods are used in wells to help oil flow to the surface in order to maintain or increase petroleum recovery. Water injection is a method of increasing oil recovery by injecting water into the well. Water injected into this well will increase pressure to the oil in the reservoir, causing it to be pushed and flow to the surface. Water treatment is typically performed at a Water Treatment Injection Plant (WTIP). WTIP performance is an activity that is used to keep reservoir pressure constant. The separation of the water that is lifted with the oil is the first step in the WTIP process. The Jatibarang Field fluid is collected at the SPU (Main Collector Station). Water from various wells will be collected at the SPU A, SPU B, SPU-Cemara, and Balongan terminals. At WTIP SPU B, the injection pump flow rate and injection pressure have a linear or directly proportional relationship. This is because as the injection pump flow rate increases, the amount of water injected increases, causing the pressure to increase. The flow rate is influenced by the amount of water received at SPU B, the condition of the pump, and the line connecting the SPU and WTIP.
Kelarutan dan Swelling Power Mikrokapsul β-Karoten Terenkapsulasi dalam Matriks Pati-Kitosan Terikat Silang Ion Tripolifosfat
Authors: Lestari Agnes Dyah Novitasari
Published: February 2023

Pada penelitian ini, mikroenkapsulasi β-karoten dilakukan dalam matriks campuran pati dan kitosan dengan penambahan ion tripolifosfat sebagai pengikat silang (dilambangkan sebagai pati-kitosan/TPP). Dua jenis pati yang digunakan di sini, yaitu pati asli dan pati terhidrolisis. Pati terhidrolisis dibuat dengan hidrolisis asam menggunakan HCl 2 M. Mikrokapsul disintesis dengan menambahkan dispersi tetes demi tetes β-karoten dalam etanol ke dalam campuran  matriks pati-kitosan/TPP disertai pengadukan magnetis dan pemanasan pada suhu 90ºC. Mikrokapsul hasil sintesis kemudian diuji kelarutan dan swelling power-nya dalam media air. Hasil penelitian menunjukkan bahwa kelarutan dan swelling power mikrokapsul dipengaruhi oleh karakteristik pati penyusunnya. Kelarutan pati-kitosan/TPP hasil hidrolisis lebih besar dibandingkan dengan kelarutan pati asli-kitosan/TPP. Mikrokapsul pati asli-kitosan/TPP  memiliki swelling power yang lebih tinggi dibandingkan dengan pati terhidrolisis-kitosan/TPP.
Antidiabetic Activity of Methanol Extract of Bark of Alstonia scholaris from Papua
Authors: Nitya Praptiwi Nitya Praptiwi , Mangallo Bertha
Published: February 2023

One of the biological wealth that grows in Papua is Alstonia scholaris, known by the Maybrat tribe as the swe plant and is used as a traditional medicine for antidiabetic. The Swe tree contains a lot of white sap and tastes very bitter. There is also a bitter taste in the roots, bark, and leaves so it is thought to contain a lot of bioactive compounds of alkaloids which have the potential as antidiabetic. This study aims to extract and determine of antidiabetic activity by the inhibition activity of the α-glucosidase of methanol extract of bark of Alstonia scholaris from Papua as a basis for the development of antidiabetic drugs based on local resources. The method used was extraction by maceration, phytochemical screening test, inhibition activity of the α-glucosidase test and functional group analysis using FTIR. The results of phytochemical screening showed that methanol extract of bark of Alstonia scholaris from Papua was strongly positive containing secondary metabolites of alkaloids and flavonoids. Analysis of functional groups with FTIR showed that the secondary metabolite compound was thought to contain -OH functional group, C=C stretch and C=O group. IC50 value of Alstonia scholaris bark MeOH extract showed 0.97 µg/mL for α-glucosidase inhibition. This study suggest the methanol extract of bark of Alstonia scholaris might be considered as potential source of bio active constituents with excellent antidiabetic activity.
EFISIENSI TERMAL DESAIN SISTEM PEMANAS AIR ENERGI MATAHARI DENGAN VARIASI JUMLAH PIPA BESI
Authors: Mirino Rosalina Rosina , Rumbiak Kharl Hainz Yarama , Mujasam Mujasam
Published: February 2023

This study aims to determine the average value of hot water temperature and thermal efficiency that can be produced by using iron pipes as fluid collectors in the Solar Energy Water Heater design system. Collector pipes are made in three variations of 5, 7 and 9 pipes which are placed in a wooden box with transparent glass as a cover on the collector surface. The inside of the wooden box is lined with styrofoam and aluminum foil to reduce heat loss to the environment. Data were collected by observing and measuring the temperature of hot water with three variations of the number of pipes, each variation of the number of pipes carried out for three days. This water temperature measurement was carried out for 6 hours, from 10.20-16.30 WIT. The average maximum temperature produced for a total of 5 collector pipes is 59.70C, a total of 7 pipes is 63.70C, and a total of 9 collector pipes is 61.70C. The thermal efficiency value of the solar energy water heating system design for the number of 5 collector pipes is 96% , the number of 7 collector pipes is 97%, and the 9 collector pipes is 99%.
BAKTERI TERMOFILIK DARI AIR DAN SEDIMEN KOLAM AIR PANAS WAR AREMI DI KAMPUNG MATATUN DISTRIK KEBAR KABUPATEN TAMBRAUW PAPUA BARAT
Authors: Massora Maria , Salosa Yenni Yendry , Mogea Rina Anita , Sutarno Simon , Sinuraya Sabarita , Krey Maria Elisabeth , Ratnawati Sita
Published: February 2023

Kolam air panas War Aremi, adalah kolam Air Panas yang terdapat di Kampung Matatun Distrik Kebar, Papua Barat. Bakteri Termofilik tumbuh pada suhu lebih dari 45oC. Bakteri Termofilik menghasilkan enzim yang bermanfaat dalam dunia industri. Penelitian ini merupakan penelitian eksploratif yang bertujuan untuk mengisolasi bakteri termofilik dari Kolam Air Panas War Aremi di Kampung Matatun, Distrik Kebar, Kabupaten Tambrauw, Papua Barat dengan menngunakan Metode Tuang (Pour Plate) Dari hasil penelitian diperoleh tiga isolat bakteri termofilik dari sampel air panas, dan 4 isolat dari sampel sedimen. Berdasarkan hasil pengecatan gram dan pengamatan morfologi sel, ketujuh isolat bakteri termofilik yang  berhasil diisolasi adalah merupakan kelompok bakteri gram positif dengan morfologi sel berbentuk sel batang. Berdasarkan hasil pewarnaan gram, pengamatan morfologi sel dan karakterisasi biokimia, ketujuh isolat bakteri termasuk genus Bacillus.
Technological methods for durability extending of cylindrical friction surfaces
Authors: Gorlenko Aleksandr , Shohnyon Almossho , Shcherbakov Andrey
Published: February 2023

Technological methods of worn cylindrical friction surfaces restoration, applicable both in parts production for the elimination of defects, and in machine maintenance for worn friction surfaces restoration, are viewed
Value elasticity estimation in pendulum surface plastic deformation
Authors: Zaides Semen , Ho Minh
Published: February 2023

The elasticity of the hardened layer under pendulum surface plastic deformation is determined. Calculations are given using computer modeling Ansys 19.1 to estimate the influence of the main technological parameters and modes of pendulum SPD (Surface plastic deformation) by the amount of metal rate of upward gradient, which makes it possible to establish the actual amount of tension and ensure the accuracy of the diametrical dimensions of the hardened parts. The dependence of the elastic rise of the hardened layer on the physical and mechanical properties of the material is given.
Civil Finance
Authors:   Financial Research Institute, Moscow, Russian Federation, Vagin Vladimir V. , Paksivatkina Valeriya A. ,   Financial Research Institute, Moscow, Russian Federation
Published: February 2023

The article highlights the experience of civic participation in state and municipal management and financial aspects of civic self-organization in different countries of the world. The main forms of cofinancing projects by the population or collecting interest-free loans through civil mutual assistance are determined. Russian practices of financial participation of citizens in the implementation of projects of common interest are identified: co-financing of initiative budgeting projects, practices of self-taxation of citizens, co-financing of projects in the implementation of certain state programs and national projects, as well as co-financing of projects on crowdfunding platforms. Based on the analysis and review of scientific literature, the conclusion was made about the need to define and describe a new phenomenon in the field of public finance — "civil finance", which refers to financial resources and relations between citizens themselves and between citizens and state institutions in the process of implementing management decisions that affect the interests of urban and rural residents.
Study of the Momentum Effect in the Price Dynamics of Highly Liquid Shares on the Russian Securities Market
Authors:   HSE University, St. Petersburg, Russian Federation, Nazarova Varvara V. , Leshchev Sergei I. ,   HSE University, St. Petersburg, Russian Federation
Published: February 2023

In this paper, the momentum effect is viewed as a price anomaly wherein portfolios of assets of the same return class exhibit systematic outperformance in earnings relative to a given benchmark (e.g., a market index). The study contributes to a better understanding of the momentum effect in the Russian stock market. Using data from the Russian stock market over the period 2019–2021, 16 momentum strategies were analyzed and the risks of momentum strategies related to market volatility were studied. The results show that the impulse strategy generates positive returns even when transaction costs are taken into account, has lower volatility and lower tail risk compared to the market index.
Complex Systems of Secrecy: The Offshore Networks of Oligarchs
Authors: Chang Ho-Chun Herbert , Harrington Brooke , Fu Feng , Rockmore Daniel
Published: February 2023

Following the invasion of Ukraine, the US, UK, and EU governments--among others--sanctioned oligarchs close to Putin. This approach has come under scrutiny, as evidence has emerged of the oligarchs' successful evasion of these punishments. To address this problem, we analyze the role of an overlooked but highly influential group: the secretive professional intermediaries who create and administer the oligarchs' offshore financial empires. Drawing on the Offshore Leaks Database provided by the International Consortium of Investigative Journalists (ICIJ), we examine the ties linking offshore expert advisors (lawyers, accountants, and other wealth management professionals) to ultra-high-net-worth individuals from four countries: Russia, China, the United States, and Hong Kong. We find that resulting nation-level “oligarch networks” share a scale-free structure characterized by a heterogeneity of heavy-tailed degree distributions of wealth managers; however, network topologies diverge across clients from democratic versus autocratic regimes. While generally robust, scale-free networks are fragile when targeted by attacks on highly-connected nodes. Our “knock-out” experiments pinpoint this vulnerability to the small group of wealth managers themselves, suggesting that sanctioning these professional intermediaries may be more effective and efficient in disrupting dark finance flows than sanctions on their wealthy clients. This vulnerability is especially pronounced amongst Russian oligarchs, who concentrate their offshore business in a handful of boutique wealth management firms. The distinctive patterns we identify suggest a new approach to sanctions, focused on expert intermediaries to disrupt the finances and alliances of their wealthy clients. More generally, our research contributes to the larger body of work on complexity science and the structures of secrecy.
Documenting and analyzing pre-reflective self-consciousness underlying ongoing performance optimization in elite athletes. The theoretical and methodological approach of the course-of-experience framework
Authors: Terrien Eric , Huet Benoit , Iachkine Paul , Saury Jacques
Published: February 2023

Traditional theories of motor learning emphasize the automaticity of skillful actions. However, recent research has emphasized the role of pre-reflective self-consciousness accompanying skillful action execution. In the present paper, we present the course-of-experience framework as a means of studying elite athletes’ pre-reflective self-consciousness in the unfolding activity of performance optimization. We carried out a synthetic presentation of the ontological and epistemological foundation of this framework. Then we illustrated the methodology by an in-depth analysis of two elite windsurfing riders’ courses of experience. The analysis of global and local characteristics of the riders’ courses of experience reveal (a) the meaningful activities accompanying the experience of ongoing performance optimization; (b) the multidimensionality of attentional foci and the normativity of performance self-assessment; and (c) a micro-scale phenomenological description of continuous improvement. These results highlight the fruitfulness of the course-of-experience framework to describe the experience of being absorbed in an activity of performance optimization.
COVID-19 Booster Vaccination Strategy
Authors: Vishwanath Manish
Published: February 2023

Despite the fact that medical specialists believe COVID-19 vaccinations are successful in regulating the virus's health consequences, demand in such vaccines among various communities has been quite low. On that basis, experts have questioned whether combining influenza vaccinations might improve vaccine uptake. The key reason for their hypothesis is that the number of persons obtaining influenza vaccinations outnumbers those interested in various COVID-19 vaccines. As a result, the current work entails a systematic review and meta-analysis of various research studies focusing on combining influenza and COVID-19 booster immunization to enhance vaccine uptake among groups severely impacted by the health pandemic. It is the appropriate time to undertake such systematic review and meta-analysis mainly because of the need to make informed health decisions on mitigating the health implications of such viruses, especially among diverse populations that are majorly affected by them.
Ground plane impact on quadrifilar helix antenna performance with respect to deployment heights
Authors: Vishwanath Manish
Published: February 2023

The quadrifilar helix antenna (QHA) is used in satellite communications. Theperformance optimization of QHA input and radiation characteristics in the presenceof infinite and finite metallic ground planes is presented in this study. It has beendiscovered that for the infinite ground plane, input characteristics such as impedanceand voltage standing wave ratio (VSWR) are stable, and the antenna has a widerhalf power beamwidth (HPBW). Smaller metallic platforms that serve as finiteground planes result in higher 3dB axial ratio beamwidth and boresight axial ratio.The use of QHA on smaller metallic platforms, such as nanosatellites and CubeSats,enhances its circularly polarised beamwidth and boresight axial ratio. On large lowearth orbit (LEO) satellites, however, steady input characteristics and a widerHPBW have been achieved at the expense of a small circularly polarised beamwidthand a decreased boresight axial ratio.
Sleep disturbance in cancer patients
Authors: Vishwanath Manish
Published: February 2023

Sleep disruption is a major problem for cancer patients, but no big study has been conducted to determine the incidence andform of sleep disturbance in cancer patients. This cross-sectional survey looked at (a) the prevalence of reported sleep issues inpatients attending six clinics at a regional cancer centre; (b) the prevalence of sleep problems in connection to cancer therapy;and (c) the form of reported insomnia (type, duration, and associated factors). All patients visiting clinics for breast, gastric,genitourinary, gynecologic, lung, and non-melanoma skin malignancies were given a brief sleep questionnaire for three months.The response rate was 87 percent, with a total sample size of 982. The average age of responders was 64.9 years (SD 12.5).Excessive tiredness (44 percent of patients), leg restlessness (41%), sleeplessness (31%), and excessive drowsiness were themost common issues (28 percent ). Chi square tests revealed considerable heterogeneity in the incidence of most sleep issuesbetween clinics.
Standardized cancer patient population for age-based survival ratios
Authors: khan ahmed
Published: February 2023

In this study, standard adult cancer patient populations are generated as a tool for calculating age-standardised cancer survival data.Previously utilised survival analysis criteria were site- and/or study-specific. Multivariate approaches were utilised to define the fewestnumber of general standard cancer patient populations that are easy to use and offer standardised survival values near to the raw ones for thegreatest number of cancer locations. The study included data from approximately 1.1 million cancer patients in the EUROCARE-2 trial. Thesuggested standard populations include three age distributions that are acceptable for malignancies with the following incidence patterns:(1) growing with age - the vast majority of cancers; (2) roughly stable with age; and (3) mostly affecting young individuals. Both wide andfive-year age divisions are used to depict the three standard distributions. Because survival is often measured in atypical age groups, thelatter can be used to identify which of the three standards would be utilised for sites not included in the cluster analysis. Overall,
A comparison of student attitudes and perceptions before and after
Authors: khan ahmed
Published: February 2023

There is growing recognition that interprofessional education (IPE) has potential for teaching health professionals to work together. The impact of IPE on learning outcomes is crucial in judging the worth of such programmes. Attitudes are considered as an important factor in the development of behaviours. The purpose of this study was to examine students' attitudes and views of collaborative learning in an interprofessional environment. Before and after an introductory IPE course, 350 students answered a questionnaire on their attitudes and beliefs about interprofessional teamwork.
Depression Prevalence in Cancer Patient
Authors: khan ahmed
Published: February 2023

Depression is the psychological illness that has gotten themost attention among cancer patients. The research ofdepression has been challenging because symptoms rangefrom melancholy to serious affective illness, and becausemood change is sometimes difficult to assess when a patientis presented with recurrent risks to life, is getting cancertreatments, is weary, or is in pain. Although many researchgroups have assessed depression in cancer patients since the1960s, the reported prevalence (major depression, 0%-38%)varies significantly due to varying conceptualizations ofdepression, different criteria used to define depression,differences in methodological approaches to measuringdepression, and different populations studied. Depression ishighly associated wi
Making decisions in multiagency multiteam systems working in harsh situations
Authors: khan ahmed
Published: February 2023

Extreme settings, such as disasters, are frequently handled by several teams working toward a common objective but with distinct sub-goals at the individual and team levels. While these multiteam systems have the ability to give access to a large pool of expertise and resources, public investigations have frequently highlighted coordination issues, resulting in contradicting judgments and actions. However, little study has been conducted to investigate the interterm mechanisms utilized to coordinate choices in harsh situations in order to cross-validate theory. As a result, the following study examines naturalistic observations made during two large-scale live disaster response exercises to determine (1) what inter-team processes are used to coordinate decisions and (2) how closely they correspond with a linear phase-based 'Joint Decision Model' (JDM) introduced to national UK disaster response guidance.
DFT-based assessment of porous metal forms for small molecule storage and separation
Authors: Vishwanath Manish
Published: February 2023

Microporous metal formats with the a-Mg(fa)2 structure (fa ¼ format, OOCH) have attracted considerable interest as materialsfor the storage and separation of small guest molecules. In this study, dispersion-corrected density-functional theory (DFT-D)calculations are employed to calculate the interaction energies for five guest molecules (acetylene, carbon dioxide, methane,nitrogen, hydrogen) adsorbed in the pores of metal formats with different metal centers (Mg, Mn, Fe, Co, Zn). For each guestadsorbent combination, the average interaction strength is calculated as Boltzmann-weighted average of the DFT-D interactionenergies obtained for individual adsorption sites. For systems for which experimentally measured heats of adsorption have beenreported, the averaged energies agree very well with experimental values. Therefore, the DFT-D results can be used to predictthe potential of metal formats as adsorbents for different applications. While metal formats may be of limited use for many gasstorage applications due to their small free volume, the high affinity of Co(fa)2 and Zn(fa)2 towards methane and acetylene couldrender them interesting for storage applications in which the affinity is more important than the uptake capacity. With regard togas separation and purification, Co(fa)2 emerges as the most attractive system for the selective adsorption of acetylene and carbondioxide over other species, while Zn(fa)2 and Mg(fa)2 are more promising for the separation of methane from nitrogen orhydrogen. Correlations between the averaged interaction energies and simple descriptors of pore size and pore volume areanalyzed.
Optimizing student-led and teacher-led case presentations
Authors: khan ahmed
Published: February 2023

Provision of efficient Opportunities for interprofessional learning (IPL) are critical in educating healthcare students for future joint practice. Although institutions have highlighted a need to better prepare students for interprofessional collaboration, few large-scale IPL efforts have been recorded. Furthermore, nothing is known about disciplinary variations in student learning experiences. The Health Collaboration Challenge (HCC) is an annual large-scale IPL event conducted at the University of Sydney. The purpose of this study was to investigate students' early engagement in an interprofessional case-based learning activity, as well as the similarities and variations in the perceived value of interprofessional (social) learning for each field. Educators and businesses alike have often urged the development of graduates who are active, interdependent, and self-directed learners.
Impact of Simulation on Student Attitudes about Interprofessional Collaboration
Authors: Vishwanath Manish
Published: February 2023

There is growing recognition that interprofessional education (IPE) has potential for teaching health professionals to work together. The impact of IPE on learning outcomes is crucial in judging the worth of such programmes. Attitudes are considered as an important factor in the development of behaviours. The purpose of this study was to examine students' attitudes and views of collaborative learning in an interprofessional environment. Before and after an introductory IPE course, 350 students answered a questionnaire on their attitudes and beliefs about interprofessional teamwork. The same questionnaire was also completed by 202 graduating health professional students who did not have IPE. Questions from the University of West England Interprofessional Questionnaire (UWE IQ) and the Readiness for Interprofessional Learning Scale were incorporated in the questionnaire (RIPLS). Independent samples t-tests demonstrated substantial positive changes in the UWEIQ IP-Learning subscale (p 14 0.012) and RIPLS (p 14 0.05) before and after the IPE training. This study provides some evidence that students who take an introductory IPE course early in their professional training not only maintain but increase their positive views toward interprofessional learning. As a result, they should be more interested in acquiring this critical information, which will help them become interprofessional collaborative-ready practitioners.