bluuebunny/crossref_metadata_2025_split huggingface dataset:
Impurity Defect Induced Ferromagnetism Investigation of SiO2-Supported NiO Particles
Authors: Sarf Fatma 
Published: December 2021

Abstract. This study examines amorphous SiO2-supported NiO particles by nickel concentration and calcination temperature arrangement to determine photoluminescence emission peaks and magnetic properties. Conventional co-precipitation with thermal calcination was used to produce NiO nanoparticles. Cubic NiO crystallization with single phase was improved by doubling the nickel concentration by calcination at 500 ºC and 600 ºC. Average crystalline size of 72 nm was obtained in the samples where double nickel concentration with calcination temperature at 600 ºC. Granular forms have been observed in all samples, and nickel clusters were shown in the samples where the nickel concentration is twice as high. Green band emission intensity increases with improved NiO crystallinity due to surface oxygen vacancies at 505 nm. It is interesting to observe ferrimagnetism for SiO2-supported NiO particles calcined at 500 ºC. From these results, optimal synthesis procedure and reduction in nucleation growth of NiO nanoparticles was achieved by double nickel concentration with calcination temperature at 600 ºC.

Resumen. Este estudio examina partículas de NiO soportadas en SiO2. El estudio comprende la variación de la concentración de níquel y la temperatura de calcinación para determinar los picos de emisión de fotoluminiscencia y las propiedades magnéticas. Se utilizó la coprecipitación convencional con calcinación para producir nanopartículas de NiO. Se mejoró la cristalización cúbica de NiO con fase única al duplicar la concentración de níquel y calcinación a 500 ºC y 600 ºC. Se obtuvo un tamaño cristalino promedio de 72 nm en las muestras donde se duplicó la concentración de níquel con temperatura de calcinación a 600 ºC. Se observaron formas granulares en todas las muestras, y se encontraron agregados de níquel en las muestras donde la concentración de níquel fue el doble. La intensidad de la banda de emisión aumenta con la cristalinidad de NiO debido a las vacantes de oxígeno en la superficie. Es interesante observar el ferrimagnetismo de las partículas de NiO soportadas en SiO2 calcinadas a 500 ºC. A partir de estos resultados, se logró un procedimiento de síntesis óptimo y la reducción del crecimiento de nucleación de nanopartículas de NiO mediante una concentración doble de níquel con una temperatura de calcinación de 600 ºC.
Investigation of thermochemical Features of Gamma Irradiated Tryptophan Stereoisomers
Authors: Neacsu Ana , Gheorghe Daniela , Tecuceanu Victorita , Perisanu Stefan 
Published: December 2021

Abstract. In this work, the use of differential scanning calorimetry (DSC) is demonstrated as a powerful technique that can provide accurate thermodynamic property values of nutritional supplements such as tryptophan. Nutritional supplements require a decontamination procedure and irradiation appears as a promising technique for this purpose. The valuable properties of tryptophan for food and pharmaceutical industry as dietary supplement have led to increasing interest in its technological behaviour. L-, D- isomers and DL-racemic mixture of tryptophan irradiated and non-irradiated were studied by DSC. Irradiation was performed at room temperature with gamma radiations using a 137Cs source, the irradiation dose range was between 0.6- 10 kGy. Two steps decomposition pattern for both irradiated and non-irradiated samples up to 350 oC was found. Fourier transform infrared spectroscopic studies were performed. The obtained results indicate that the irradiation process does not inhibit the thermal properties of tryptophan when irradiated up to 10 kGy. The HPLC method was employed to evidence the degradation of the irradiated material.

Resumen. En este trabajo, se demuestra el uso de calorimetría diferencial de barrido (DSC) como una técnica poderosa que puede proporcionar valores precisos de propiedades termodinámicas de suplementos nutricionales como el triptófano. Los suplementos nutricionales requieren un procedimiento de descontaminación y la irradiación aparece como una técnica prometedora para este propósito. Las valiosas propiedades del triptófano para la industria alimentaria y farmacéutica como suplemento dietético han provocado un creciente interés por su comportamiento tecnológico. Los isómeros L-, D- y la mezcla racémica DL- de triptófano irradiado y no irradiado fueron estudiados por DSC. La irradiación se realizó a temperatura ambiente con radiaciones gamma utilizando una fuente de 137Cs, el rango de dosis de irradiación estuvo entre 0.6 - 10 kGy. Se encontró un patrón de descomposición de dos pasos para muestras irradiadas y no irradiadas hasta 350 ºC. Se realizaron estudios espectroscópicos de infrarrojos por la transformada de Fourier. Los resultados obtenidos indican que el proceso de irradiación no inhibe las propiedades térmicas del triptófano cuando se irradia hasta 10 kGy. Se empleó el método HPLC para evidenciar la degradación del material irradiado.
The Natural Products and Pharmacological Biodiversity of Brown Algae from the Genus Dictyopteris
Authors: I. Rushdi Mohammed , A. M. Abdel- Rahman Iman , Saber Hani , Zekry Attia Eman , Ramadan Abdelmohsen Usama 
Published: December 2021

Abstract. Genus Dictyopteris is an important genus among marine seaweeds and is excessively distributed and known by its ocean smell due to its secondary metabolites including C11-hydrocarbons and sulfur compounds. This chemical feature is responsible for its interesting biological properties. This review detected the literature from 1959 to 2021 on the genus Dictyopteris and revealed the secondary metabolites, together with biological activities of the genus Dictyopteris to create the base for additional studies on its clinical and pharmaceutical applications.

Resumen. El género Dictyopteris es un género importante entre las algas marinas y está excesivamente distribuido y conocido por su olor a océano debido a sus metabolitos secundarios que incluyen hidrocarburos C11 y compuestos de azufre. Esta característica química es responsable de sus interesantes propiedades biológicas. Esta revisión detectó la literatura de 1959 a 2021 sobre el género Dictyopteris y reveló los metabolitos secundarios, junto con las actividades biológicas del género Dictyopteris, para crear la base para estudios adicionales sobre sus aplicaciones clínicas y farmacéuticas.
Developing Magnetic Material for Remediation of Aquatic Nitrogen Pollution in Water Facilities
Authors: Zhu Guocheng , Chen Junming 
Published: December 2021

Natural organic matter affect water environmental security and posed a potential threat to human health, and thus it has long been considered as a key index to evaluate water treatment performance. Dissolved organic nitrogen is one of the NOM, which produces some disinfection byproducts having more toxic than those carbon-based materials. Coagulation is a key unit of drinking water purification and has received wide attention. However, conventional flocculation technology on removal of DON is so poor that we have to seek more effective improving measurement. The combined use of conventional flocculant and organic polymer can improve treatment efficiency to a certain extent, and enhanced coagulation can also improve the DON removal rate, but their DON removal performance is still not dreamful. At present, there is a lack of systematic research on flocculation to remove DON. Although some achievements have been made, there is still a big gap between the preparation technology of flocculant and the goal of efficient removal of DON in water.For treatment of secondary effluent of industrial wastewater, some studies show that the use of Fe3O4 mainly has the effect of accelerating separation, but the adsorption effect is not good. However, with the synergistic flocculation of amino functionalized Fe3O4 it has a good effect on removing water protein, polysaccharide and humic acid, which can meet the water quality discharge standard and reduce the dosage of flocculant. The above results show that functional nanoparticle materials are of great significance to improve the adsorption and flocculation performance. Therefore, the functional modification of magnetic nanoparticles plays an important role.
Rancang Bangun Alat Bantu Mobilitas Tunanetra Dan Penentu Lokasi Menggunakan Global Positioning System Tracking Berbasis Internet Of Things
Authors: Anggara Rifqi Prima , Taufiq Arif Johar 
Published: December 2021

Tunanetra adalah seseorang yang mengalami gangguan pada indra penglihatannya. Penyandang tunanetra mempunyai keterbatasan dalam penglihatan sehingga mobilitasnya terbatas. Hambatan yang sering dialami tunanetra diantaranya adalah menentukan keberadaan penghalang, genangan air, dan lokasi. Hambatan tunanetra dalam menentukan lokasi menimbulkan kekhawatiran bagi keluarga tunanetra dalam mengetahui keberadaannya. Alat ini dibuat untuk membantu tunanetra (pengguna tongkat) agar dapat mengetahui keberadaan penghalang, air, lokasi tunanetra, dan tombol emergency saat terjadi keadaan darurat. Tongkat ini terdapat tiga sensor ultrasonik HC-SR04 depan, kanan, dan kiri sebagai pendeteksi halangan, sensor soil moisture sebagai pendeteksi air, DF player mini yang terhubung ke speaker sebagai indikator suara dan modul GPS sebagai pendeteksi lokasi. Hasil pengujian tongkat ini dapat mendeteksi halangan yang ada di depan sensor ultrasonik HC-SR04 dengan jarak < 70 cm dan dapat mendeteksi air dengan kedalaman genangan > 2 cm melalui sensor soil moisture. Sebagai indikator bunyi ketika sensor aktif digunakan DF Player Mini yang terhubung ke speaker. Tongkat ini mampu memberikan informasi keberadaan pengguna melalui sebuah Smartphone pada aplikasi kodular berupa tampilan lokasi Google Maps. Tongkat ini juga dilengkapi dengan tombol emergency untuk mengirimkan pesan ke g-mail saat dalam keadaan darurat. Kata Kunci :DF Player Mini, Modul GPS, Sensor Ultrasonik HC-SR04, Tunanetra
Pengaruh Likuiditas, Profitabilitas, Financial Leverage, dan Arus Kas Operasi Dalam Memprediksi Kondisi Financial Distress
Authors: Maretha Rissi Dita , Amelia Herman Lisa 
Published: December 2021

Financial distress occurs before the bankruptcy of a company. Thus the financial distress model needs to be
developed, because by knowing the company's financial distress from an early age, it is hoped that actions can
be taken to anticipate conditions that lead to bankruptcy. Financial distress can be measured through financial
statements by analyzing financial statements. This study aims to determine and analyze the effect of liquidity,
profitability, financial leverage, and operating cash flow in predicting financial distress conditions for
manufacturing companies listed on the Indonesia Stock Exchange in 2016-2020. Data from the company's
official website and completed from the IDX and ICMD websites. There are independent variables, namely
liquidity, profitability, financial leverage, and operating cash flow, while the dependent variable in this study is
financial distress. The data analysis method used in this research is logistic regression analysis method which
aims to determine the role of each independent variable in influencing the dependent variable. The results of
this study indicate that liquidity has no effect on financial distress, meaning that if the company is able to pay
its debts well, then it is likely that the company will not experience financial distress. Profitability has no effect
on financial distress, meaning that the size of the company's profit value has no effect on the company so that
it avoids financial distress conditions. Financial leverage has a positive effect on financial distress, meaning that
if the company has higher debt and is not followed by high sales results, it can allow failure to pay debts which
causes the company to be in financial distress. Cash flow has no effect on financial distress, meaning that if the
company has a good operating cash flow value, it will not experience financial distress.
Konten Kurikulum Akuntansi Perguruan Tinggi Dan Kesesuaiannya Dengan Standar Kompetensi Lulusan
Authors: Tasniem Fauzia  , Afni Zalida , Elfitri Santi  
Published: December 2021

Changing trends in business and finance have an impact on accounting learning and curriculum. This study
aims to see how the college accounting curriculum produces competent graduates and their conformity
with the IQF competency standards, the competencies needed to prepare graduates to enter the accounting
profession and the competencies expected by users (employers). This study uses a mix-method with a
sequential exploratory model (content analysis and descriptive statistical analysis). The results of this study
show that colleges provide graduates with competencies in accounting, business, general competencies and
other competencies that can support graduates' careers. The compatibility between graduates
competencies based on the college accounting curriculum and the IQF competency standards has been
appropriate, while the compatibility between graduates competencies with the professional organizations
competency and user expectations competency has not been appropriate. In their curriculum, some college
have included courses related to digital technology. We hoped there will be further harmonization and
adjustment between the accounting curriculum and graduate competency standards to improve graduates
work ability.
Pemenuhan Hak Reparasi Bagi Korban Peristiwa Talangsari 1989 untuk Memperkuat Ketahanan Nasional
Authors: Amran Mutiara Sari , Runturambi Arthur Josias Simon 
Published: December 2021

Penelitian ini bertujuan untuk menganalisis pemenuhan hak reparasi bagi korban Peristiwa Talangsari 1989 untuk memperkuat ketahanan nasional dan sinkronisasi kebijakan pemerintah pusat dan daerah dalam pemenuhan hak reparasi bagi korban Peristiwa Talangsari 1989. Penelitian ini menggunakan metode kualitatif dengan metode wawancara dan studi pustaka. Hasil penelitian menunjukkan bahwa pemenuhan hak reparasi yang dapat memperkuat ketahanan nasional di antaranya adalah reparasi materiil berupa pemberian ganti rugi, pemberdayaan ekonomi, bantuan pendidikan seperti beasiswa, pembangunan infrastruktur, serta pemberian layanan kesehatan berupa penyembuhan trauma. Selain itu, reparasi simbolik berupa program memorialisasi juga diperlukan untuk membangun kolektif memori agar peristiwa serupa tidak terulang kembali. Selain itu, penelitian ini juga menunjukkan bahwa hingga saat ini, beberapa kebijakan yang diambil oleh Pemerintah Pusat dan Pemerintah Daerah telah memberikan dampak positif bagi korban Peristiwa Talangsari 1989. Meskipun demikian, terdapat beberapa kelemahan dalam proses pemulihan yang telah dilakukan. Perlu adanya suatu alternatif kebijakan untuk memaksimalkan pemenuhan hak reparasi bagi korban Peristiwa Talangsari 1989 dan dugaan peristiwa-peristiwa pelanggaran HAM berat lainnya di Indonesia.
”Jeesus-känni, paras känni”.
Authors: Itäkare Susanna 
Published: December 2021

Tässä artikkelissa tutkittiin sitä, miten uskonnollisesti sitoutumattoman yleiskustantajan julkaisemassa Markku Karpion Tie auki taivasta myöten -nuortenromaanissa (2001) kristillistä fundamentalismia esitetään suhteessa jälkisekulaariin yhteiskuntaan. Tällöin keskiöön nousee toiseuden problematiikka, jossa fokusoiduttiin erityisesti sukupuolen ja seksuaalisuuden esittämiseen.
Karpion romaania analysoitiin narratologisvaikutteisella lähiluvun menetelmällä. Narratologisesta analyysista edettiin tekstin kokonaistulkintaan, jossa teksti asetettiin valittuihin konteksteihin. Karpion teos kontekstualisoitiin paitsi suomalaiseen ja suomenkieliseen nuortenkirjallisuuden traditioon, myös suomalaiseen jälkisekulaariin yhteiskuntaan.
Tulkinnassa päädyttiin siihen, että romaanin sisäistekijä toiseuttaa fundamentalistisen uskonyhteisön ja sitä kautta ylipäätään institutionaalisen kristinuskon. Uskonyhteisön esittäminen stereotyyppisesti naisvihan, homofobian ja hengellisen väkivallan tyyssijana kertoo paljon siitä, millaisena jälkisekulaari yhteiskunta haluaa nähdä itsensä: tasa-arvoisena, yhdenvertaisena ja suvaitsevaisena. Tällöin näistä arvoista radikaalisti poikkeavat ajattelu- ja uskomistavat on helpompi sysätä jonkin toisen harteille kuin kohdata itsessään. Romaani jää kiinni toiseuttamiseen, vaikka sillä olisi mahdollisuus myös toiseuden tunnustamiseen, joka voisi mahdollistaa kohtaamisen ja vuoropuhelun esittämisen maailman ja uskonyhteisön välillä. Tarvitaankin yhtäältä aiempaa moninaisempia representaatioita uskonnoista realistisen nuortenkirjallisuuden kontekstissa ja toisaalta kriittistä lukutaitoa, jolla analysoida ja tulkita uskonnollisia ja uskonnollisaiheisia nuortenkirjoja.
Impact of Covid-19 on Stock Market in Sub-Saharan Africa
Authors: Bayero Saifullahi Adam , Safiyanu Babangida Danladi , Bakabe Zaitun Sanusi 
Published: December 2021

Corona virus disease (COVID-19) which was declared by the World Health Organization as a global pandemic caused serious economic problem to all the countries including Sub-Saharan Africa. Given the negative impact of COVID19 on the world economy, this paper examined the impact of COVID19 related cases and death on stock exchange markets volatility in Sub-Saharan African countries. The study used the number of reported cases and death from four Sub-Saharan African countries viz Nigeria, South Africa, Kenya, and Botswana, reported cases and death from China and U.S. and all share index as a proxy of stock markets in four countries from 28 February 2020 to 21 December 2020. The study estimated GARCH 11, TGARCH 11, and EGARCH 11 since the variables are heteroskadestic in nature which makes the application of ARCH lausible; the selection criterion was based on Akaike, Schwarz, and Hannan info Criteria. The result shows that COVID19 confirmed cases and death do not affect the operation of the stock markets in Sub-Saharan African countries, but the volatility of the markets has increased within the period of analysis. Furthermore, Botswana and Kenya stock markets were affected by external cases from China. We therefore recommended that stock markets stakeholders in Sub-Saharan Africa should be more concern about health safety measures and be ready for any future pandemic that might affect the markets.
Influence of Covid-19 Pandemic on the Economy of Tokumbo Vehicles Trade in Borno State: Implications for Counselling
Authors: Dahiru Idriss Ibrahim , Umar Ngohi Bukar 
Published: December 2021

Abstract
The study was an opinion survey that investigated the influence of covid-19 pandemic on the economy of Tokumbo vehicles trade in Borno State, Nigeria. Population of the study comprised of all fairly used secondhand car dealers in the State. However, 150 Tokumbo car dealers constituted the sample. Purposive and stratified random sampling techniques were used in selecting sample. Researchers designed 18 items Structured Interview Schedule (SIS) tagged “Car Dealers Interview Schedule (CDIS)” and Focus Group Discussion (FGD) were the instruments used to elicit data for the study. The CDIS was divided into two parts (A & B). Part A collected information on demographic characteristics of the respondents while Part B elicited data on sources of capital for the Tokumbo dealers, brand of Tokumbo vehicles and the influence of covid-19 pandemic on Tokumbo trade in Borno State, Nigeria. The CDIS was validated by three experts in the field of Business Administration of the University of Maiduguri, Borno State and a coefficient of 0.74 was obtained using Cronbach alpha reliability method for the internal consistency which was considered relevant and adequate for the study. Descriptive statistics of frequency counts, percentage and bar graph were used in analyzing data collected for the study. Three objectives and three research questions piloted the study. Results of the study revealed loan and personal savings as some of the sources of capital for dealers in Tokumbo vehicles in Borno State. Toyota, Volkswagen, Honda, Mercedes Benz and Peugeot were some of the brands of Tokumbo cars in the study area while rent, loan repayment and gross reduction in sales were some of the effects of covid-19 pandemic on the trade in Tokumbo vehicles in Borno State, Nigeria. Based on the findings, implications for counselling, conclusions and recommendations were made.
Social Support for Postpartum Mothers with Postpartum Depression: Scoping Review
Authors: Muflikha Ikha , Nuzuliana Rosmita , Lestari Sri 
Published: December 2021

Background: In Indonesia, the incidence of postpartum depression accounts for 50% to 70% of postpartum women. Therefore, ladies within the postnatal amount would like a social support from individuals around them to adapts to their new role as mothers. The lower the social support provided, the upper the postnatal depression. Research objective: Collection of articles discussing social support for postpartum mothers with postpartum depression Method: Five stages were wont to conductÂ scopingÂ a review. The 5 stages embrace characteristic analysis queries, characteristic relevant studies, choosing studies, charting knowledge, andÂ an aggregation, summarizing and reportage the results.Result: It was found that 9 selected literature had Grade A and B. 4 themes emerged as a result of the scoping review comprising of husband support, family support, friend support and self-efficacy for mothers experiencing postpartum depression. The literature was obtained from quantitative and qualitative research originating from developed and developing countries. Conclusion: Social support obtained from husband, family, friends, and self-efficacy is very important to reduce the rate of postpartum depression. The research gap was used as a reference in future research. It is hoped that researchers can develop research on the factors correlated to postpartum depression.
Role of epidermal growth factor receptor and microbial infections in polycystic kidney disease
Authors: Orzechowska Kamila , Muhammad SN , Mokamil H 
Published: December 2021

Background: Autosomal Dominant Polycystic Kidney Disease (ADPKD) is a frequently inherited diseases associated with the presence of fluid-filled cysts. Epidermal Growth Factor Receptor (EGFR) plays role in cysts development
Material and methods: The following tools (PubMed, PubMed Central, Medline Search Engine, Locate and Google Scholar) were used in literature search. Key words used to search for relevant literature are: Polycystic Kidney Disease, Epidermal Growth Factor Receptor, Tyrosine Kinase Inhibitor, Renal Cyst Formation and Renal Cyst Infection. The studies beyond 10 years were not included in present study.
Analysis: The cross-examination of research papers allowed to analyse literature around role of EGFR in ADPKD pathophysiology, EGFR TKI as treatment of ADPKD and role of microbial cyst infections in disease progression.
Results: There is a small body of literature that look at EGFR, Tyrosine Kinase Inhibitor (TKI) and cyst infection in ADPKD over the last decade. The ‘crosstalk’ between Src and EGFR was observed to have an impact on cyst development and progression. Therefore, the combined treatment with different compounds can be a desirable approach in the treatment of ADPKD. There has been observed relationship between cyst infections, decrease in kidney function and PKD gene mutation. Endotoxins of Gram-negative bacteria could be involved in disease development.
Conclusion: The understanding of mechanisms of ADPKD and several cancers has led to the identification of molecular targets, and one of these is EGFR. The further study could establish the role of endotoxin in ADPKD development and its interaction with EGFR.