bluuebunny/crossref_metadata_2025 huggingface dataset:
Bright, photostable, and long-circulating NIR-II nanoparticles for wholeprocess monitoring and evaluation of renal transplantation
Authors: Zhang Rongyuan , Shen Ping , Xiong Yu , Wu Tianjing , Wang Gang , Wang Yucheng , Zhang Liping , Yang Han , He Wei , Du Jian , Wei Xuedong , Zhang Siwei , Qiu Zijie , Zhang Weijie , Zhao Zheng , Tang Ben Zhong
Published: March 2023

Kidney transplantation is the gold standard for the treatment of end-stage renal disease (ESRD). However, the scarcity of kidneys has caused more and more ESRD patients being stuck on the waiting-list for surgery. Improving the survival rate of kidney grafts as much as possible is not only responsible for patients, but also an alternative solution to kidney shortage. Thus, rapid diagnosis and timely management of surgical complications are of vital importance to the success of renal transplantation but lack efficient methods and technologies. Herein, a fluorescence technology based on bright, photostable, and long-circulating aggregation-induced emission (AIE) active NIR-II nano contrast agent for the whole-process monitoring and evaluation of renal transplantation has been reported. The outstanding optical property and long-circulating characteristic of the AIE NPs help to achieve renal angiography in the kidney retrieval surgery, donor kidney quality evaluation before transplantation, diagnosing vascular complications, and assessment of renal graft reperfusion after revascularization, which considerably outperforms the clinically approved indocyanine green (ICG).
Fibrosis-4 Index as a Predictor for Disease Severity and Mortality in Patients with COVID-19
Authors: NALBANT Ahmet , KAYA Tezcan , YAYLACI Selcuk , AYDIN Ayhan , İŞSEVER Kubilay , GENÇ Ahmed Cihad
Published: March 2023

Objective: The Fibrosis-4 (FIB-4) index is a noninvasive marker of liver fibrosis in various patient populations. We examined whether there is a relationship between the severity and prognosis of COVID-19 disease and the FIB-4 index.
Materials and Methods: This stuy is a cross-sectional and retrospective. The patients were divided into two groups as those hospitalized in the intensive care unit (ICU) and those hospitalized in the clinic (non- ICU).
Results: Of the total 158 cases,86(54%) were male. Age, total bilirubin, AST levels and FIB-4 index were higher in ICU patients compared to non-ICUs (p<0.001,p=0.002, p=0.003, p<0.001 respectively). FIB-4 index non-survivors were also higher (p=0.002). When the effect of the FIB-4 index on the severity of COVID-19 disease and mortality was evaluated by ROC analysis, both ICU and non-survivors were found to be significant (respectively FIB-4 score;AUC=0.705,95%CI:0.624-785,p<0.001;AUC=0.654,95%CI:0.566-742,p=0.002). When the FIB-4 index cut-off value for disease severity was taken as 2.19, 70.0% sensitivity and 60% specificity were found in predicting disease severity. Moreover, when the FIB-4 index cut-off value for mortality was taken as 2.19, 71.2% sensitivity and 53% specificity were found in predicting mortality.
Conclusion: The FIB-4 index is an independent predictor of severity and mortality in COVID-19 patients requiring ICU.
Evaluation of Root Canal Configuration of Permanent Maxillary Molar Teeth in a Turkish Subpopulation: A Cone-Beam Computed Tomographic Study
Authors: ERKAN Erhan , OLCAY Keziban , EYÜBOĞLU Tan Fırat , ŞENER Elif , GÜNDOĞAR Mustafa
Published: March 2023

Objective: Maxillary molars may be challenging for root canal treatment due to their complex canal anatomy and additional root canals, especially in the mesiobuccal root. The current study aimed to investigate the prevalence of root and root canal numbers of maxillary molar in a selected Turkish population.
Materials and Methods: A total of 905 first and second maxillary molars were evaluated using cone-beam computed tomography (CBCT) images. The number of roots and canals was recorded and the mesiobuccal canal was further evaluated with the Vertucci classification.
Results: A total of 394 teeth had a second mesiobuccal (MB2) canal (43.5%). While 90.4% of all maxillary molars had three roots, 44% had four root canals. The most common root canal anatomy of mesiobuccal root canals was Type II (42.6%) followed by Type IV (31.5%) and Type III (22.1%).
Conclusions: It is clear that the second mesial root canal in permanent maxillary molars should be carefully searched for the long-term success of root canal treatments. It is seen that CBCT sections will be beneficial in diagnosis and treatment in better understanding the anatomical structure of the teeth and determining possible anatomical deviations.
Effects of vacuum infusion configuration on homogeneity of glass fiber reinforced polymer composites for automotive components
Authors: YILDIZHAN Şafak
Published: March 2023

In this study, the effects of vacuum infusion configuration on the homogeneities of glass fiber reinforced vinyl ester composites have been evaluated. Three different sizes of samples (100x100, 500x500, and 1000x1000 mm) were fabricated. Three different configurations were used to fabricate the samples. The first two configurations had one inlet, while the third configuration had two inlets for resin infusion. Thickness variations and hardness (Shore D) measurements were performed to determine the homogeneities of the samples. The results revealed that, for small size samples, the configurations have no obvious effect on the homogeneity of the samples, both in terms of thickness variations and hardness values. However, for larger samples, the configuration where the resin is introduced into the preform in the center of the component showed better homogeneity than other configurations. Even a better distribution is assessed with the introduction of the resin in the center of the sample, although this configuration also resulted in thickness swellings in the central areas of the sample. The thickness swellings were observed around the inlet areas for all configurations. The study shows that the resin flow in the center of the component is preferable but thickness swelling must be considered when dimensional tolerances are critical.
PEMEC performance evaluation through experimental analysis of operating conditions by response surface methodology (RSM)
Authors: ÖZDEMİR Safiye Nur , TAYMAZ İmdat , OKUMUŞ Emin , BOYACI Fatmagül
Published: March 2023

The optimum current value of the proton exchange membrane electrolysis cell (PEM-EC) mainly depends on various operational factors, such as temperature, operating pressure, water flow rate, and membrane water content. Therefore, this study aims to maximize performance related to the current of PEM-EC by determining the optimal operating conditions of the PEM electrolysis cell having a 9 cm² active layer. In this regard, response surface methodology (RSM) and central composite design (CCD) were applied using Design-Expert (trial version) software to identify the optimal combination of operating variables such as temperature, pump speed, and cell voltage. Temperature, pump speed, and cell voltage were the independent variables to have ranged from 40-80 °C, 1-8, and 1.8-2.3 V, respectively. Also, the individual and combined effects of operational parameters on cell performance will be included in this study by ANOVA (analysis of variance). The optimal parameters are 80 °C, 1, and 2.3 V, respectively, temperature, pump speed, and cell voltage corresponding to the maximum current output of PEM-EC. This RSM tool found that the maximum current was 16.778 A. In addition, it was concluded that the most influential parameter on cell performance was the cell voltage, followed by the temperature.
Airbnb’s Growth Changes Residential Property Prices in Adelaide
Authors:   University of Adelaide, Zhu Haiting
Published: March 2023

In this research, the impact of Airbnb on residential property prices in Adelaide is assessed. Many previous European and American research have connected short-term rental, Airbnb and property market and made conclusion that short-term rentals (STR) are increasing housing prices and rents. However, there is no research about Airbnb and its effects on residential property prices in Adelaide. This research aims to fit this gap and makes Plan SA know more about Airbnb’s effects. This research used multiple linear regression model to examine the Airbnb activity’s effects on housing prices in Greater Adelaide during a specific time period before COVID-19. This regression model has been utilised in 3 Airbnb hotspot suburbs, Adelaide, North Adelaide and Glenelg and 3 adjected suburbs with few Airbnb listings, Thebarton, Prospect and Glengowrie in Greater Adelaide; different results in these 3 pairs suburbs has been employed to understand Airbnb’s different effects in housing prices. According to the results of regression model in different suburbs, Airbnb hotspot areas, have higher R squares and unpopular areas have smaller R squares. Considering coefficients in Airbnb hotspot areas, the number of Airbnb listings can increase housing prices and Airbnb daily can decrease housing prices. However, in unpopular Airbnb areas, R square and sample size are too small to make correlation between Airbnb and housing prices. The further study should enlarge the size of sample to verify whether there is a correlation between Airbnb and residential property prices in Airbnb unpopular areas.
Research on the Management of China's Rural Infrastructure Projects under the Background of Rural Revitalization Strategy
Authors:   College of Architectural Engineering, Wang Xiaochu , Jiang Biyou ,   College of Architectural Engineering
Published: March 2023

Agriculture is a fundamental industry in China, contributing to economic and social development and historical progress. Therefore, China has also put forward the strategy of revitalizing the countryside to develop agriculture. And to achieve rural revitalization, rural infrastructure projects must be carried out. This paper elaborates on the development of rural infrastructure projects, and then identifies the current problems in the management of rural infrastructure projects in China: the legal system of project management has not yet been improved, the project management is not standardized, the construction cost, the construction schedule and the project quality are not coordinated, and the bidding is not rigorous enough. Finally, we propose measures to solve the problem: continuously improve the engineering management system, enhance the quality and knowledge of construction personnel, strengthen the safety supervision of rural infrastructure projects, and establish a warranty system for rural infrastructure projects to promote the construction of rural infrastructure projects in China.
Contribution of Augmented Reality in Teaching and Learning, in the Midst of COVID-19: Systematic Review
Authors: Chamorro-Atalaya Omar , Morales-Romero Guillermo , Quispe-Andía Adrián , Quispe-Guía Shirley , Guía-Altamirano Teresa , Auqui-Ramos Elizabeth , Linares-Sánchez Guillermo , Sandoval-Nizama Genaro , Arévalo-Tuesta José Antonio
Published: March 2023

The state of emergency declared in many countries due to the pandemic led universities to consider the incursion of technological tools to give continuity to the teaching and learning process; therefore it is significant to explore results regarding the application of augmented reality (AR) in education. The objective of the research is to generate knowledge from the systematic review of the literature framed in the context of virtual teaching in the midst of COVID-19. A bibliographic review was carried out under a mixed approach, exploratory and descriptive level. The findings showed that the application of AR in learning is not exclusive to any engineering specialty, but, on the contrary, it is versatile and adapts to various curricular contents; Also, the way in which augmented reality is applied is more focused on the use of mobile augmented reality (mobile AR) technology with markerless activation. In addition, it was identified that the factors that were analysed to demonstrate the contribution of AR were: the effectiveness of learning, the predisposition to use AR and the motivation generated by AR. With which it can be concluded that AR in this context has managed to position itself as a learning resource that goes beyond a tool linked to a virtual classroom, since it allows the student to transcend towards immersion in environments with high contextual fidelity. Future research should address which factors influence the improvement of mobile AR activation sensitivity, in different contexts.
Expansion and optimization of the nomenclature of certified reference materials for spectral analysis of cast irons
Authors: Tretiakova M. V. , Lashchenova E. A. , Kochergina E. V.
Published: March 2023

Certified reference materials are an integral part of laboratory metrological support. They are used in spectral analysis for calibration of measuring instruments, quality control of measurement results, in verification and ensuring the traceability of measurement. The interchangeability between sets, samples of new and earlier issues is rather important. The Institute for Certified reference materials maintains the current nomenclature of certified reference materials for spectral analysis of cast irons. New samples are developed not only to reproduce the previously available characteristics, but also to expand them by increasing the number of certified characteristics or ranges of certified values. The possibility of joint use of the new and previously released sets is shown. To comply with consumer demands, we are going to produce in the second half of 2023 CJSC ISO nodular cast iron with a large number of certified impurities, the total content of which does not exceed 0.30%.
Development of a set of steel certified reference materials ISO UG141 - ISO UG146 for calibration of spectrometers
Authors: Ignatenko T. I. , Tretiakova M. V. , Lashchenova E. A. , Trofimova A. G.
Published: March 2023

The Institute for Certified Reference Materials launched a set of certified reference materials (CRM) of carbon and low-alloy steels for calibration of atomic emission and X-ray spectrometers ISO UG141 - ICRM UG146. The composition of the set is designed in a way that ensure obtaining calibration characteristics for 26 elements to be controlled by the program of low-alloy and carbon steels with the minimum number of samples. At the same time, the content of such rare elements as cerium, lead, bismuth, tantalum, etc. are also certified in ISO UG141 - ISO UG146. A tentative composition of the set as well as the calibration curves obtained on Spectrolab Mil (AES), Q8 Magellan (AES), and ARL 9900 (XRF) spectrometers are presented. An experiment was performed to prove the consistency of this set with ISO UG01 - ICRM UG91 samples and similar samples produced by foreign manufacturers.
Determination of tantalum in alloy steels by atomic emission spectrometry with inductively coupled plasma
Authors: Shalygina L. V. , Popkova G. N.
Published: March 2023

The capabilities of inductively coupled plasma atomic emission spectrometry (ICP-AES) for the determination of tantalum in alloy steels without separation of matrix components have been analyzed. The analytical lines of tantalum and the method of sample preparation are selected. The effect of acids present in the analyzed solution on the analytical signal of Та has been studied. Optimal conditions of measurements were determined by changing one of the operational plasma parameters at simultaneous stabilization of all other parameters. The influence of the components of alloy steels on the analytical signal of tantalum has been studied. The metrological characteristics of the technique were evaluated proceeding from the results of analysis of certified mixtures (CM). To assess the correctness of the results obtained we used certified mixtures and standard addition technique. A method for measuring the mass fraction of tantalum in alloy steel samples by ICP-AES in the content range from 0. 01 % to 0. 05 % has been thus developed.
ОСОБЕННОСТИ СТРУКТУРНОЙ СТАБИЛИЗАЦИИ D- И T-ПОЛОСТЕЙ SI-ГИДРАТА МОЛЕКУЛАМИ ГАЗОВ
Authors: Юнусов М.Б. , Хуснутдинов Р.М.
Published: March 2023

В данной работе в рамках метода функционала плотности исследуются механизмы структурной стабилизации гидратов sI молекулами газов CH4, H2S, H2, N2, Ar, Kr, Xe, CO2, C2H6, C3H6. Показано, что включение молекул газа в D- и T- полости гидрата приводит к деформации полостей и изменению их радиусов (до –0.23 %). Рассчитаны энергии связи газов в D- и T- полостях. Установлено, что молекулы с диаметром d < 5 Å лучше стабилизуют D-полости, в то время как молекулы с диаметром d > 5 Å лучше стабилизируют T-полости. По характеру зависимости величины энергии связи от массы молекулы выделяются две группы газов: молекулярные, для которых dEb/dM ∈ [−0.008; −0.006] эВ·моль/г и атомарные, для которых dEb/dM ∈ [−0.002; −0.0015] эВ·моль/г. Показано, что ориентации протяженных молекул CO2, C2H6 и C3H6 вдоль длинной оси T-полости является наиболее энергетически выгодной. Рассчитаны плотности электронных состояний N(E) для незаполненного гидрата sI и гидратов sI с содержанием CH4 и CO2. Обнаружено, наличие гостевой молекулы приводит к снижению энергии электронной подсистемы и повышению стабильности гидрата.
PID Controller Design for Heating Furnace Temperature Based on Bat Algorithm (BA)
Authors: Budiman Budiman , Ali Machrus
Published: March 2023

A furnace is a tool for heating materials, oil, and others. Furnaces use gas, coal, and oil as fuel. Temperature is the main parameter that needs to be controlled to remain stable, and precise and improve fuel efficiency. As technology develops, several methods can be used to control temperatures that are more reliable than conventional controls. The technology is a Proportional Integral Derivative (PID) controller. PID controllers have been proven and widely used in the industry, but determining the gain of the PID value is still not accurate. This can affect temperature stability, and slow response to reach the desired set point. Therefore, it is necessary to optimize the control system. Optimizing by looking for a better PID gain value with the artificial intelligence tuning method. The Artificial Intelligence method is Bat Algorithm(BA). The simulation results and discussion show that the best design is PID-BA with an overshoot of 0.0429, non undershoot, and the fastest settling time of 16.9 seconds
Psychophysiology of Wellbeing; A must to introduce in undergraduate programs
Authors: Noushad Shamoon
Published: March 2023

The psychophysiology of wellbeing is an important field of study that explores the relationship between mental and physical health. This interdisciplinary field integrates knowledge from psychology, neuroscience, biology, and physiology to understand how positive emotions, attitudes, and behaviors can impact physical health outcomes. Introducing the psychophysiology of wellbeing in undergraduate programs can provide students with valuable knowledge and skills to promote their own wellbeing and mental health, increase awareness of the connection between mental and physical health, and potentially open up new prospects of collaborations and wellbeing overall.
The University Students' Concerns about Terrorism, Resilience, and Coping Strategies
Authors: Ali Saima Masoom
Published: March 2023

Background: Current research inspects the concerns of students of the university about terrorism and their capacity to bounce back, and the coping strategies they are using to deal with it. A cross-sectional study research design is employed in the current study.

Methodology: The sample is comprised of 387 students collected from faculties of Karachi University (1) Faculties of Social Sciences, Islamic Studies, Education, Law, and Administrative Sciences and (2)    Faculties of Science, Engineering, Pharmacy, and Medicine.  A consent form, demographic sheet, Students' concerns about terrorism scale, Brief resilience scale, and COPE inventory were administered to students.  

Results: Demonstrated significant positive relationship among Anti-Terrorism, Peace, and Female emancipation. Further linear regression analysis shows that peace scores explain a 21.8% variance and female Emancipation score explains an 18.4% variance in the Anti-terrorism score. Multivariate analysis of variance shows a significant difference between gender in scores of Anti-terrorism, peace, female emancipation, and coping strategies (self-destruction, substance use, and positive reframing).   

Conclusion: Participants' resilience was found to be in the normal range. A significant positive relationship was found between Anti-Terrorism, Peace, and Female emancipation.  Those who had anti-terrorist views were in favor of peace and Female emancipation.
Psychosocial working conditions and Burnout among Healthcare Professionals in a Tertiary Care Hospital in Karachi, Pakistan.
Authors: Misha Irshad  , Farah Ahmad  , Syed Hassan Danish
Published: March 2023

Background: Healthcare professionals experience stressful working conditions that can lead to burnout. This study investigates the association between psychosocial working conditions and burnout among healthcare professionals in a tertiary care hospital in Karachi, Pakistan.

Methodology: This cross-sectional study was conducted at three different facilities of Dr. Ziauddin Hospital, Karachi, from July 2021 to December 2021. Two standardized surveys were used to assess the psychosocial working conditions and burnout. The selected participants were associated with the institutional healthcare facility and were working as house officers, residents, nurses, dentists, and allied health professionals.

Results: out of 384 distributed questionnaires, only 172 participants completed and returned the questionnaire. The mean score of burnouts was 46.24 with an SD value of 16.1 when assessed with the different levels of burnout (i.e., no burnout, stressed out, mild burnout, burned out, server burnout), it was found that the majority of the participants' n=56 (32.6%) had mild burnout and n=55 (32%) had burnout while severe burnout was found in n=22 (12.8%).

Conclusion: Our study results indicate that there is a significant increase in healthcare professionals' level of burnout in a tertiary care system.
PROFIL KESULITAN SISWA KELAS VII DALAM MEMAHAMI KONSEP BENTUK ALJABAR
Authors: Katili Apriyani , Haryanto Haryanto , Wyrasti Andi Fajeriani
Published: March 2023

Tujuan penelitian ini adalah untuk mendeskripsikan kesulitan siswa kelas VII dalam pemahaman konsep Aljabar, serta mengidentifikasi faktor-faktor yang mempengaruhi siswa kelas VII dalam pemahaman konsep Aljabar. Penelitian ini merupakan penelitian kualitatif yang menggunakan pendekatan deskriptif. Instrumen pendukung berupa tes tertulis dengan teknik think aloud dan pedoman wawancara. Hasil penelitian ini adalah (1) siswa masih mengalami kesulitan dalam merepresentasikan konsep aljabar, (2) siswa mengalami kesulitan dalam mengidentifikasi atribut operasi atau konsep aljabar, (3) siswa tampak kesulitan untuk menghubungkan konsep aljabar baik dalam matematika atau kehidupan nyata. Faktor yang mempengaruhi pemahaman siswa: (1) siswa jarang bertanya kepada guru padahal tidak mengerti, (2) siswa merasa malu kepada temannya yang lebih paham darinya, (3) siswa tidak hadir di kelas dan tidak berani bertanya kepada guru, (4) siswa bertanya kepada temannya yang tidak tahu, (5) siswa tidak mengerti tentang cara guru menjelaskan.
Pemanfaatan Aplikasi Keuangan Berbasis Android Pada Umkm di Kelurahan Koya Barat Kota Jayapura
Authors: Deodata Gratiana , Dyah Margareth , Rachman Taufik
Published: March 2023

Kelurahan Koya Barat adalah kelurahan yang berada di Kecamatan Muara Tami yang mengalami peningkatan perekonomian cukup pesat dibandingkan dengan kelurahan lainnya, Hal ini dilihat dari meningkatnya jumlah unit usaha yang meningkat tiap tahunnya. Tujuan dari pengabdian di Koya barat adalah untuk membantu dan mengajarkan para pemilik usaha di kelurahan koya barat dalam mengelola keuangan usahanya agar menjadi lebih efektif dan efisien.Pelaksanaan kegiatan pengabdian pada masyarakat ini dilakukan dengan metode survey,pelatihan dan pendampingan kepada pemilik usaha untuk mengetahui tata cara penggunaan aplikasi Buku kas dalam mencatat laporan keuangan baik transaksi penjualan, transaksi pembelian dan stok barang serta laporan keuangan dari hasil usaha. Hasil pengabdian yang telah dilakukan di Koya Barat adalah dari 14  Pemilik Usaha  ada 13 reponden atau 92,8% pemilik usaha  yang telah memahami pemakaian dari aplikasi Buku kas dan merasa sangat terbantu dalam mengelola keuangan usaha, sedangkan 1 responden atau 7,2% pemilik usaha telah memahami pemakaian dari Aplikasi tetapi belum dapat menerapkan secara baik karena terkendala Smartphone yang digunakan.
Ngijon Suatu Jenis Perjanjian Jual Beli Dalam Sistem Hukum Adat
Authors: Asyhadie Zaeni , Kusuma Rahwawati
Published: March 2023

Ngijon secara umum adalah suatu jenis transaksi jual beli dalam sistem hukum adat yang berkembang di beberapa daerah di Indonesia. Dikatakan sebagai “Ngijon” karena barang/benda yang dijadikan objek transaksi bukannya diserahkan langsung pada saat tercapainya kesepakatan, tetapi nanti pada saat tertentu setelah obyeknya tersebut sudah “matang” atau sudah layak untuk “dinikmati”. Berkaitan dengan saat penyerahan tersebut maka kajian ini hendak membahas bagaimana keberadaan transaksi “ngijon” jika dipandang dari sudut syariat Islam. Kajian ini dilakukan secara normatif dengan mengkaji bahan-bahan hukum yang ada dan membandingkannya satu sama lain sampai menemukan kesimpulan pokok bahasan dari kajian ini. Dari hasil penelaahan diketahui bahwa, ngijon ini merupakan transaksi jual beli dan pinjam meminjam yang dilarang dalam syariat Islam karena mengandung adanya unsur-unsur gharar. Namun jika ngijon ini didasari atas akad tolong menolong maka transaksi “ngijon” dirasakan masih diperkenankan sepanjang pemilik barang/benda sangat memerlukan uang untuk keperluan yang mendesak.
Ocorrência de Meningite em alguns municípios do Estado do Rio de Janeiro
Authors: Abreu Guilherme Teixeira de , Silva Laura Borges da , Souza Lucilene da Silva de Oliveira , Andrade Claudia Caixeta Franco , Istoe Sérgio Elias
Published: March 2023

Não tem
Formulasi dan Evaluasi Lulur Limbah Kulit Dalam (Albedo) Buah Durian (Durio zibethinus Murr.) sebagai Kosmetik Alami
Authors:   Universitas Hamzanwadi, Minawati Minawati , Febriani Yuyun ,   Universitas Hamzanwadi, Ihsan Ersi Arviana ,   Universitas Hamzanwadi
Published: March 2023

Kulit buah durian secara keseluruhan mengandung senyawa flavonoid, fenolik, saponin, dan tanin. Golongan flavonoid yang dimiliki oleh kulit durian berfungsi sebagai aktivitas antioksidan yang menjadi senyawa penting dalam menjaga kesehatan tubuh. Antioksidan dalam bahan kosmetik dapat bermanfaat untuk memperbaiki sel-sel kulit yang rusak akibat radikal bebas. Tujuan penelitian ini adalah untuk menghasilkan formulasi sediaan lulur yang terbaik dari kulit dalam (albedo) durian berdasarkan uji sifat fisiknya. Penelitian ini merupakan penelitian experimental menggunakan posttest design dengan perlakuan konsentrasi dari kulit dalam (albedo) durian sebagai bahan aktif sediaan lulur. Formulasi sediaan lulur dari kulit dalam (albedo) durian dibuat dengan konsentrasi 1%, 1,5%, dan 3%. Uji sifat fisik sediaan lulur ditentukan berdasarkan uji organoleptis, viskositas, pH, daya sebar, daya lekat, homogenitas, dan hedonik (kesukaan). Hasil penelitian menunjukkan bahwa formulasi sediaan lulur dari kulit dalam (albedo) durian memilik perbedaan berdasarkan uji sifat fisiknya dengan formulasi yang terbaik adalah formulasi sediaan lulur kulit dalam (albedo) 3% baik dari segi aroma, tekstur, dan warna.
Formulasi dan Evaluasi Krim Pelembab Kulit Ekstrak Mahkota Bunga Sepatu (Hibiscus rosa-sinensis L.)
Authors:   Universitas Hamzanwadi, Nopita Rati Astuti Dewi , Ihsan Ersi Arviana ,   Universitas Hamzanwadi, Hariadi Puspawan ,   Universitas Hamzanwadi
Published: March 2023

Bunga sepatu merupakan tanaman yang memiliki kandungan flavonoid yang berfungsi sebagai antioksidan dan sebagai pelembab. Pelembab merupakan sediaan yang digunakan untuk memperbaiki kulit kering, sediaan ini dapat menurunkan Trans Evidermal Water Loss (TEWL) dengan membentuk lapisan lemak tipis di permukaan kulit. Penelitian bertujuan untuk mengetahui formulasi dan evaluasi sifat fisik sedian krim ekstrak etanol mahkota bunga sepatu (Hibiscus rosa-sinensis L.) sebagai pelembab kulit. Metode yang digunakan pada penelitian ini eksperimental labolatorium. Evaluasi sifat fisik sediaan krim meliputi uji organoleptis, homogenitas, pH, viskositas, daya sebar, daya lekat. Hasil penelitian menunjukkan bahwa formulasi sediaan krim ekstrak etanol mahkota bunga sepatu dari ketiga formula uji organoleptis pada F1 (semi padat, abu muda, kakao), F2 (semi padat, drak sea green, kakao), kontrol (semi padat, putih, kakao), uji homogenitas dari ketiga formula menunjukkan hasil yang homogen, uji pH pada ketiga formula F1 6,22, F2 6,23, kontrol 5,91, uji viskositas F1 318, F2 1138, kontrol 992, hasil uji daya sebar memiliki diameter pada F1 5,59 cm; F2 5,9 cm; kontrol 5,2 cm dan uji daya lekat pada F1 2,72 detik; F2 278 detik; dan kontrol 2,65 detik. Hasil uji pelembab menunjukkan bahwa ada perbedaan yang signifikan (p<0,05) antara formula 2 dengan kelompok kontrol negatif. Sediaan krim ekstrak mahkota bunga sepatu F2 dengan sebelum pengolesan 22,64 % pada hari ke 10 rata-rata 52, 48%.
Aktivitas Antioksidan Buah Sawo Manila (Manilkara zapota L) Sebagai Kandidat Produk Perawatan Kulit
Authors:   Universitas Hamzanwadi, Azim Muhlisun , Saputra Dani ,   Universitas Hamzanwadi, Hariadi Puspawan
Published: March 2023

Antioksidan merupakan senyawa-senyawa yang dapat mencegah terbentuknya radikal bebas yang akan menyerang dinding sel. Penelitian ini dilakukan untuk mengetahui aktivitas antioksidan pada buah sawo manila (Manilkara zapota L). Senyawa antioksidan yang ditemukan pada buah sawo manila adalah senyawa alkaloid, flavonoid, tanin, dan saponin. Desain penelitian ini menggunakan desain eksperimental di laboratorium farmasi Universitas Hamzanwadi. Sampel diekstraksi dengan etanol 96%, dilanjutkan dengan proses fraksinasi menggunakan kolom kromatografi. Eluen yang digunakan pada proses fraksinasi yaitu etil asetat, etil asetat-metanol, dan metanol. Pengujian aktivitas antioksidan dilakukan secara kualitatif dan kuantitatif. Hasil pengujian secara kualitatif menunjukkan semua sampel mengandung antioksidan karena terlihat warna kuning ketika disemprotkan DPPH pada plat KLT. Sedangkan hasil pengujian secara kuantitatif menunjukkan bahwa nilai IC50 fraksi I 46 ppm dengan kategori sangat kuat, nilai IC50 fraksi II 97 ppm dengan kategori kuat, nilai IC50 fraksi III 149 ppm dengan kategori sedang, dan nilai IC50 vitamin C 29 ppm dengan kategori sangat kuat. Kesimpulannya yaitu fraksi buah sawo manila (Manilkara zapota L) memiliki aktivitas antioksidan dengan kategori sangat kuat, kuat dan sedang.
Pengaruh Waktu Penyimpanan terhadap Angka Lempeng Total pada Beberapa Jenis Tahu
Authors:   Politeknik Kesehatan Kementerian Kesehatan Kalimantan Timur, Widyanti Pramita Rosela Eka , Harlita Tiara Dini ,   Politeknik Kesehatan Kementerian Kesehatan Kalimantan Timur
Published: March 2023

Tahu merupakan sumber protein nabati yang terbuat dari ekstrak kedelai yang digumpalkan dengan asam, ion kalsium atau bahan penggumpal lainnya. Sebagai salah satu bahan makanan yang memiliki kandungan protein yang tinggi, tahu rentan ditumbuhi mikroorganisme. Sumber pencemaran tahu dapat berasal dari bahan baku kedelai atau air yang digunakan selama proses pembuatan tahu. Banyak konsumen tidak langsung mengolah atau membersihkan tahu setelah pembelian menjadi permasalahan yang ditemukan. Tujuan dari penelitian ini adalah mengetahui angka lempeng total bakteri pada tahu berdasarkan waktu penyimpanan yang dijual di Kota Samarinda. Jenis penelitian ini adalah penelitian deskriptif dengan melakukan pemeriksaan Angka Lempeng Total. Sampel pada penelitian ini adalah 9 jenis tahu yang berbeda yang dijual di Kota Samarinda dengan metode pengambilan total sampling. Masing-masing tahu diberi perlakuan 2 jenis percobaan yaitu segera dan penundaan 24 jam. Adapun jumlah perlakuan sebanyak 18 kali percobaan yang masing-masing dilakukan dengan 4 kali pengenceran dan 2 pengulangan, maka total perlakuan sebanyak 144 unit percobaan. Kemudian data dianalisis menggunakan analisis ragam (ANOVA), dilanjutkan dengan uji Duncan Multiple Range Test (DMRT). Berdasarkan hasil pemeriksaan angka lempeng total pada tahu dari 9 sampel diketahui sebagian besar (6 sampel) memenuhi syarat dan (3 sampel) tidak memenuhi syarat, sesuai SNI 3142 tahun 1992 dengan persyaratan Angka Lempeng Total pada tahu maks. 1,0 x 106. Angka lempeng total tertinggi terdapat pada sampel W2T7 (24 jam) yaitu 4,3 x 106 koloni/g dan terendah pada sampel W1T1 (segera) yaitu 9 x 101 koloni/g. Simpulan dari pemeriksaan angka lempeng total pada tahu berdasarkan waktu penyimpanan yang dijual di Kota Samarinda adalah memenuhi syarat pada perlakuan segera dan tidak memenuhi syarat pada penundaan 24 jam. Dengan hasil tersebut diharapkan bagi konsumen agar lebih memperhatikan proses penyimpanan tahu dan lebih baik tahu yang dibeli segera diolah.
Actualización en la restricción del movimiento de la columna vertebral, en el traumatismo pediátrico: ¿qué nos dicen las guías ATLS-10º edición?
Authors: Rubén Ferreras Vega  , Cristina del Río Peña
Published: March 2023

Los traumatismos son las causas más frecuentes de mortalidad infantil en Europa. El correcto manejo es crucial para disminuir la morbimortalidad. Para establecer un conjunto de criterios comunes para su manejo hay diversos grupos de trabajo, entre ellos el “Advanced Trauma Life Support” (ATLS). En el año 2018 presentaron la 10ª edición, con mayor consideración hacia la población infantil. Aunque se sigue remitiendo al lector al tratamiento del trauma medular adulto. Sin embargo existen importantes diferencias como la lesión medular espinal sin anomalías radiográficas (SCIWORA), más frecuente en el niño. Este artículo tiene como objetivo contextualizar en el paciente pediátrico las medidas propuestas, para el manejo de la restricción de movimiento del traumatismo medular, en las guías ATLS 10 ed.
Is Gamification Important for Service Systems Non-Users? A Study on Airline Loyalty Programs
Authors: SESLİOKUYUCU Osman Seraceddin
Published: March 2023

Increasing use of social communication networks and mobile technology have caused the airline-passenger relationship to shift from traditional methods to more modern and technological infrastructure processes. The airline loyalty programs provide that permit more focused marketing, tailored services, and more accessibility for both members and non-members. Consumers are motivated by prizes, competition, and social engagement in gamified loyalty programmes. Gamification, which is effective in improving the results of innovation practices and their acceptance by consumers, plays an active role in this interaction. In this direction, the study aims to reveal the factors that affect the service system non-users behavioral intentions based on airline loyalty programs and its relationship between social influence, consumer innovativeness, and gamification. The research data were collected from air passengers who use air transportation at least once time and have no loyalty program membership. Data obtained from passengers were analyzed using the PLS-SEM model. The findings show that gamification processes will improve the participation process of new passengers, and in this direction, new consumer profiles can be added to the portfolio of service systems. In addition, it has revealed that gamification and social influence are effective on behavioral intention and gamification has a mediating role in the relationship between consumer innovativeness and behavioral intention.
Subject review: Intrusion Detection System (IDS) and Intrusion Prevention System (IPS)
Authors: Safana Hyder Abbas  , Wedad Abdul Khuder Naser  , Amal Abbas Kadhim
Published: March 2023

Intrusion detection system (IDS) is the process of monitoring the events occurring in a computer system or network and analyzing them for signs of possible incidents, which are violations or imminent threats of violation of computer security policies. An intrusion prevention system (IPS) is software that has all the capabilities of an intrusion detection system and can also attempt to stop possible incidents. If anomaly traffic pass through the network IDS would generate a false positive which means it only detects the malicious traffic, takes no action and generates only alerts but IPS detects the malicious traffic or suspicious activity, takes the actions like terminate, block or drop the connections. This paper provides an explanation of network intrusion, detection, and prevention to overcome them.
A review on transdermal drug delivery system
Authors: K Purushotham  , K Anie Vijetha
Published: March 2023

In order to produce systemic effects, transdermal drug delivery systems (TDDS), commonly referred to as "patches," are dosage forms that are intended to spread a therapeutically active amount of medicine across the skin of a patient. Drugs that are applied topically are delivered using transdermal drug delivery devices. These are pharmaceutical preparations of varying sizes, containing one or more active ingredients, intended to be applied to the unbroken skin in order to deliver the active ingredient after passing through the skin barriers, and these avoid first pass metabolism. Today about 74% of drugs are taken orally and are not found effective as desired. To improve efficacy transdermal drug delivery system was emerged. In TDDS the drug easily penetrates into the skin and easily reaches the target site. To get around the problems with medicine delivery via oral route, transdermal drug delivery systems were developed. These systems have been utilized as secure and reliable drug delivery systems since 1981.
Harmful effects of heavy metals in cosmetics
Authors: Jakada Sunday Dauda  , Ezekiel Friday  , Bako Benjamin
Published: March 2023

This study was carried out to investigate the harmful effects of heavy metals in cosmetics. To achieve this objective the researcher used test and observation. From the study, the levels of heavy metals in mercury, lead, cadmium, chromium, nickel in some branded skin-whitening lotions, lip-sticks, anti aging cream and lip-balm were determined using CV-AAS for mercury and AAS for lead, cadmium, chromium, and nickel. The mean levels (ppm) of heavy metals were found to fall in the following ranges: In lip-sticks, chromium 1.14, 1.09, 1.34, Nickel 2.19, 2.14, 2.36. In fairness cream, mercury 1.79, 1.52, 0.10. Lip-balm and anti-aging cream no trace of heavy metal found. In today’s world the use of cosmetics on daily basis has become very common. Consumers can limit their exposure by avoiding products that contain harmful chemicals. Especially with regard to possible long term effects as the products may be used extensively over a long period of time may contain ingredients whose safety is not certain or which are known to cause health risks. Alternatively one can buy a product which contains chemicals in certain quantity which will not cause the adverse effect. In Nigeria, National Agency for Food and Drug Administration and Control (NAFDAC), which is the agency responsible for the control of the safety of cosmetics products, is working hard to ensure safety of the consumers of these products, whereas the manufactures of these products on their part have the responsibility to ensure the clinical safety of their products. It is recommended that the use of heavy chemicals contained in cosmetics should be avoided. Consumers can limit their exposure by avoiding products that contain harmful chemicals. Alternatively one can buy a product which contains the chemicals in small quantity which will not cause the adverse reactions. Organic based cosmetics should be used since it is produced from natural sources.
Analisis Total Productive Maintenance Dengan Menggunakan Metode Overall Equipment Effectiveness Pada Mesin Mixing Batching Di PT. Wijaya Karya Beton Tbk Boyolali
Authors: Muhajir Sayid Muhammad , Yuamita Ferida
Published: March 2023

Masalah: Mesin yang dipergunakan dalam memproduksi Beton tersebut yakni mesin las, mesin mixer beton, mesin spinning, dan mesin hopper mobile. Mesin batching mixer adalah yang paling berpengaruh dari semua mesin di area produksi. Mesin mixer batching digunakan untuk kegiatan penyampuran bahan baku pasir, koral, dan semen.

Permasalahan sering terjadi pada mesin mixer batching karena sering terjadi beberapa kendala atau kerusakan mesin. Mixer batching yang sering terjadi kerusakan, mixer batching ialah bagian ujung dari mesin batching plant yang berguna sebagai mesin untuk mengaduk dan mencampur bahan baku beton. Pada mesin mixer batching sering mengalami downtime dan breakdown sebesar 865 menit dan breakdown sebesar 265 menit dalam 9 bulan pada bulan Januari sampai September tahun 2022.

Tujuan: Penelitian ini dilakukan guna mencari tahu berbagai faktor mesin mixer batching mogok dan mengalami downtime dan Melakukan analisis tingkat efektifitas pemakaian mesin menggunakan metode Overall Equipment Evectiveness (OEE).

Metodologi: Melalui penelitian lapangan, metode analisis deskriptif digunakan dalam penelitian ini.

Temuan/Hasil Penelitian: Penyebab tingginya nilai downtime yang menyebabkan rendahnya nilai overall equipment effectiveness yaitu sebesar 82%, perlu dilakukan pelatihan operator perihal mesin yang ditangani, meningkatkan intensitas perawatan pada mesin Batching Plant dikarenakan jam kerja mesin Batching Plant yang tinggi sebesar 90%, meneyebabkan rendahnya nilai Performance Rate yaitu sebesar 88% selama Sembilan bulan pada bulan Januari – September 2022, rendah nya nilai Performace Rate adalah penyebab utama nilai OEE pada mesin Batching Plant mendapatkan nilai rata – rata sebesar 82%.
PENGARUH MODEL PEMBELAJARAN KOOPERATIF TIPE THINK TALK WRITE TERHADAP KETERAMPILAN MENULIS TEKS NARASI PADA MATA PELAJARAN BAHASA INDONESIA DI KELAS V MIN 4 KOTA MEDAN
Authors: Aini Nurul , Salminawati Salminawati , Rambe Riris Nurkholidah
Published: March 2023

Tujuan dari penelitian ini adalah untuk 1) Mengetahui keterampilan menulis teks narasi pada mata pelajaran bahasa Indonesia dengan menggunakan model pembelajaran langsung di kelas V MIN 4 Kota Medan; 2) Mengetahui keterampilan menulis teks narasi pada mata pelajaran bahasa Indonesia dengan menggunakan model pembelajaran kooperatif tipe Think Talk Write di kelas V MIN 4 Kota Medan; 3) Mengetahui pengaruh yang signifikan dengan penggunaan model pembelajaran kooperatif tipe Think Talk Write terhadap keterampilan menulis teks narasi pada mata pelajaran bahasa Indonesia di kelas V MIN 4 Kota Medan. Metode penelitian ini menggunakan penelitian kuantitatif eksperimen dengan desain penelitian quasi eksperimental desain (non equivalent control group design). Sampel dalam penelitian terdiri dari 2 kelas, yaitu kelas eksperimen dan kelas kontrol yang berjumlah 52 siswa. Instrumen pengumpulan data menggunakan tes pretest dan posttest. Teknik analisis data menggunakan uji normalitas, uji homogenitas, dan uji hipotesis (uji t). Hasil penelitian diperoleh bahwa, keterampilan menulis teks narasi pada mata pelajaran bahasa Indonesia dengan menggunakan model pembelajaran langsung adalah dengan nilai rata-rata 76,34. Keterampilan menulis teks narasi pada mata pelajaran bahasa Indonesia dengan menggunakan model pembelajaran kooperatif tipe think talk write adalah dengan nilai rata-rata 79,76. Hasil uji “t” diperoleh thitung > ttabel yaitu 2,764 > 2,009 dengan taraf signifikan 0,05 atau 5% yang menyatakan Ha diterima dan H0 ditolak. Hal ini membuktikan model pembelajaran kooperatif tipe think talk write memiliki pengaruh yang signifikan terhadap keterampilan menulis teks narasi pada mata pelajaran bahasa Indonesia di kelas V MIN Kota Medan.
IMPLEMENTASI MODEL PEMBELAJARAN KOOPERATIF TIPE TITO (TIME TOKEN) TERHADAP KETERAMPILAN BERBICARA SISWA PADA MATA PELAJARAN BAHASA INDONESIA DI KELAS III-A SDN 25 BILAH HILIR TAHUN AJARAN 2021/ 2022
Authors: Rizka Widya , Budianti Yusnaili , Kusumawati Tri Indah
Published: March 2023

Abstrak: Penelitian ini merupakan penelitian deskriptif kualitiatif. Subjek penelitian ini adalah siswa kelas III-A SDN 25 Bilah Hilir Kecamatan Bilah Kabupaten Labuhanbatu dan  juga melibatkan guru kelas III-A sebagai sumber informasi di dalam kelas penelitian. Berdasarkan hasil penelitian dapat diambil kesimpulan bahwa dalam implementasi model pembelajaran kooperatif tipe Tito (Time Token) terhadap keterampilan berbicara siswa pada mata pelajaran bahasa Indonesia di kelas III-A SDN 25 Bilah Hilir terdapat tiga tahap dalam penerapan model pembelajaran kooperaif tipe time token yaitu: a) tahap persiapan, b) tahap penyajian dan c) tahap tindak lanjut. Dengan menggunakan model pembelajaran kooperatif tipe time token dapat meningkatkan keterampilan berbicara siswa, khususnya pada indikator kepercayaan diri dan kelancaran dan adapun faktor pendukung dalam penerapan model pembelajaran kooperatif tipe time token yaitu: a) guru, b) peserta didik yang menguasai materi dan berani, c) buku paket yang digunakan dalam pembelajaran, d) kupon sebagai media utama dan juga media lain yang berhubungan dengan materi pembelajaran, sedangkan faktor penghambat dalam penerapan model pembelajaran kooperatif tipe time token yaitu: a) peserta didik yang masih memiliki rasa malu dan b) peserta didik yang kurang menguasai materi pembelajaran.

 

Kata Kunci: Implementasi model pembelajaran kooperatif tipe Tito (Time Token), Keterampilan berbicara, Bahasa Indonesia.
HUBUNGAN ANTARA KEMAMPUAN MANAJEMEN KEPALA SEKOLAH DENGAN KOMPETENSI PROFESIONAL GURU DI SEKOLAH DASAR NEGERI KECAMATAN MEDAN MARELAN KOTA MEDAN
Authors: Rezeki Ulfah Sari , Cornelia Tina Sheba , Harahap Siti Zahara. H
Published: March 2023

Abstrak: Penelitian ini bertujuan untuk mengetahui hubungan manajemen kepala sekolah dengan kompetensi profesional guru di sekolah dasar negeri se-kec. Sei Tuan Kota Medan. Penelitian ini adalah penelitian kuantitatif dengan pendekatan expost facto. Populasi dalam penelitian ini adalah seluruh sekolah dasar negeri se-kec. sei tuan yang berjumlah 66 sekolah. Teknik yang digunakan dalam penelitian ini adalah teknik tes yang di dukung dengan studi dokumentasi. Teknik analisa data dalam mengetahui kemampuan manajemn kepala sekolah dan kompetensi profesional guru digunakan teknik analisa data deskriptif untuk mengetahui hubungan manajemen kepala sekolah dengan kompetensi profesional guru diolah menggunakan teknik koefisien korelasi dengan bantuan SPSS for Windows 16.0. Hasil penelitian menunjukkan sebagai berikut: (1) kemampuan manajemen kepala sekolah yang terdiri dari aspek perencanaan, pengorganisasian, pengarahan dan pengawasan dalam nilai 9,25, (2) kompetensi profesional guru yang terdiri dari aspek menguasai materi mata pelajaran, mengasai SK dan KD pada mata pelajaran yang diampu, mengembangkan materi pembelajran, mengembangkan sikap keprofesionalan dan memanfaatkan TIK dengan nilai rata-rata sebesar 11,72 ,(3) hubungan antara kemampuan manajemen kepala sekolah dengan kompetensi profesional guru menunjukkan bahwa faktor kemampuan manajemen kepala sekolah memberikan sumbangan positif sebesar 0,417, dapat diartikan bahwa 41% kompetensi profesional guru dipengaruhi oleh manajemen kepala sekolah. Hal itu juga dapat diartikan bahwa sebesar 59% merupakan pengaruh dari variabel lain yang tidak diteliti seperti kemampuan guru dalam mengembangkan profesionalitasnya, ketersediaan fasilitas pendukung yang dibutuhkan dalam proses pembelajaran, dukungan moril dan material dari kepemimpinan   sekolah.