bluuebunny/crossref_metadata_2025 huggingface dataset:
Design and Development of Captopril Gastro-Retentive Tablet Using Natural Polymers of Maize and Jowar Plant
Authors: P. Gayakwad Bhushan , R. Bavaskar Sunil , Fulzele Sandip , Yadav Reenu , Gauttam Vinod , Sawale Jyotiram
Published: February 2023

Nowadays, the use of natural polymers as an alternative to synthetic gastro-retentive polymers is increasing. Such natural raw materials are highly biocompatible and biodegradable with no or significantly fewer side effects and are economical too. The main aim of this research work was to design a gastro-retentive tablet of Captopril by using Maize Stem Pith (MSP) powder and Jowar Stem Pith (JSP) as novel natural low-density polymers and also to sustain the drug release for up to 12 hours. Our objective behind this research is to prepare the gastro-retentive tablet, evaluate it for floating behavior, and to achieve the sustained release effect for at least 12 hours. The novelty of this research work is that MSP powder and JSP powder possesses low density. Thus, gastro-retentive tablets with a low-density (floating) approach can be prepared at a very lost cost compared to the currently marketed formulation. Gastro-retentive tablets of Captopril were designed by using MSP and JSP powder. Using design-expert® version 13, the formulations were prepared using a 32-complete factorial design. The gastro-retentive tablet showed good floating behavior and dissolution pattern, which sustains the release of the drug for up to 12 hours. The optimization study using a contour plot and response surface plot suggested that formulation R9 is an optimized batch among all batches. The current research indicated that there is an increase in floating time with a corresponding decline in the dissolution rate of the tablet as the concentration of MSP powder and JSP powder increases. The optimized formulation R9 consists of MSP powder and JSP powder at 12% and 8 %, respectively, in combination with HPMC (K-100M), and has proven excellent floating behavior and expected drug release pattern. Therefore, MSP powder and JSP powder could be used as suitable low-density novel polymers to design gastro-retentive tablets of Captopril.
Study of Synthesis and Characterization of Pure Cus and Cufes Nanoparticles by Hydrothermal Method
Authors: Thilagavathi L. , M. Venkatachalam Dr. , M. Saroja Dr. , Senthil Dr.T.S.
Published: February 2023

Copper-based material has good electrical and optical properties but is not only physical properties and also good in antibacterial applications. Nano-structured CuS has potential value on high photocatalytic activity because of their suitable band gap and catalytic ability. CuS NP hydrogels had both adjustable physical properties and good injectable self-healing characteristics and excellent functionalities, concurrently including hemostatic ability, bacteria-killing capability, and cell migration and proliferation promotion. In vivo wound, healing, and histomorphological examinations of immunofluorescence staining in a mouse full-thickness wound model demonstrated good acceleration effects of these hydrogels for infected wound healing. A novel Chalcopyrite CuFeS nanocrystals are used as a Fenton reagent to degrade organic dyes without any additional source efficiently. Subsequently, the CuFeS2 nanocrystals/ biomass composite degradation column is made, continually degrading organic dyes. This paper demonstrates a comparative study of the synthesis and characterization of pure CuS and CuFeS nanoparticles using copper chloride, thiourea, ferric chloride and water solvent by straightforward hydrothermal methods. The synthesized material was characterized by an Xray diffraction (XRD), Scanning Electron Microscope (SEM), and Energy Dispersive X-ray spectrum (EDAX) techniques employed to study the nanostructure properties of the prepared sample. Crystallite size was determined by the Debye-Scherrer formula and found to be 15.5 nm and 20.55 nm, respectively. The EDAX spectrum showed a clear peak of present elements. An SEM image shows the morphology of the nanostructures. Optical analysis was done with UV and FTIR techniques. The pure CuS and CuFeS synthesized Tauc Relation and calculated nanomaterials bandgap came out to be 4.6eV and 4.4 eV, respectively.
Peran Technopreneurs dalam Komersialiasi Teknologi Konverter Kit Motor Listrik (Studi Kasus: PT. EKM)
Authors: Putra Muhammad Iqbal Sulistyo , Al Banna Wafiq Hasan , Afraah Sayyidah Maulidatul , Yuniaristanto Yuniaristanto , Liquiddanu Eko , Sutopo Wahyudi
Published: February 2023

Most of the technology from universities (PT) related to technological innovation often fails to enter the market. This problem then becomes the basis and object of improvement in technology-based entrepreneurial practices (technopreneurs). Learning is carried out through Independence Learning Campus Independence (MBKM) which converts courses according to training subjects in collaboration with PUI UNS and BPPT. This practice is a model of participatory and collaborative learning, in which students are directly involved in solving existing case studies and act as perpetrators of technology commercialization and become technopreneurs. Students are initially given training materials in accordance with the curriculum and direct learning from existing tenants. As a result, through this learning process, students can design business process proposals that exist in tenants. The success of this learning method was assessed based on technopreneur analysis from students in answering problems faced by tenants based on aspects of product technology innovation, product development, business development, and its implementation at BMC. One of the tenants who is the object of the case study in this study is the start-up PT. EKM who have problems with the commercialization of technology in the case of konverter kit products.
Seleksi dan Penentuan Third Party Logistik Transportasi Produk Pelumas Menggunakan Metode TOPSIS dan PROMETHE
Authors: Hasibuan Sawarni , Jaqin Choesnul
Published: February 2023

Selection of Third Party Logistics (3PL) services is an important focus of attention for companies in selecting suppliers in their supply chain. The wide marketing area of PT PETRONAS's lubricant products demands 3PL performance to increase the company's service level. The purpose of this study is to analyze the decision-making process in the context of selecting 3PL transportation suppliers using the TOPSIS and PROMETHE multi-criteria methods. The type of data used consists of primary data and secondary data through library research, interviews, and field surveys. The process of selecting a transportation 3PL is carried out in two stages, namely selection of criteria and the commercial aspect of the bidding price per region is evaluated as the basis for selecting the best supplier. The selected suppliers are PT Wira Logitama Saksama, PT Glory sogotrans Mandiri, PT Iron Bird Logistik, PT Sumisho Global Logistik, and PT Dunia Express Transindo. Based on the results of the analysis using the PROMETHEE method, five criteria with the highest weight were produced, namely Price, Time Delivery, Health Safety Management, Infrastructure and Office Equipment. The results of the ranking using the TOPSIS method for shipping to each destination are that PT Wira Logitama Semesta is the best supplier for five shipping destinations, namely Jabodetabek, Bandung, Surabaya, Lampung and Medan and PT Iron Bird Logistik is the best supplier for shipping to Cilegon and Semarang.
Analisis Peningkatan Efektifitas Mesin Cetak Produksi Tangki Air Dengan Metode Overall Equipment Effectiveness
Authors: Laysa Yulia
Published: February 2023

The increase in customer demand for water tanks has resulted in companies having problems meeting all requests. This is mainly due to the high machine breakdown time, especially on Line 3 No 28 printing press. The company strives to fulfill all customer requests by maximizing the potential of its resources. This research aims to identify the causal factors of the high breakdown time of Line 3 No 28 printing press and to recommend an increase in the effectiveness of Line 3 No 28 Printing machines using the Overall Equipment Effectiveness (OEE) method. The stages carried out in this study were through field observations, collecting data from the company's ERP and Jasper software systems, analysis, and recommendations the improvement. Data collection through interviews was carried out by direct interviews with relevant expert respondents using a fishbone diagram and FMEA methods. The main cause of the long breakdown time is the delay in the material powder entering the production area from the weighing area and the thin printing of the tank. The advice given is that the company implements OEE calculations every day so that the effectiveness of each machine can be monitored, the company increases the awareness of autonomous maintenance for everyone who works for the company and controls the improvements that have been recommended.
A novel rice aspartic protease gene OsAP79 is involved in BPH resistance through regulation of increasing shoot sclerenchyma layer thickness
Authors: Li Jingying , Jiang Zhe , Cao Zhenyu , Zhou Hailian , Li Yi , Zhong Xiaohui , Huang Fugang , Li Fahuo , Cheng Ling , Qiu Yongfu
Published: February 2023

Every year, rice planthoppers (main brown planthopper, BPH,
Nilaparvata lugens Stål), one of the most important pests in rice
production, cause huge yield losses worldwide. The identification of
resistance genes and exploration of insect resistance mechanisms are
some of the most fundamental and effective methods to manage the pest.
Here, the aspartic protease (AP) gene OsAP79 was
transcriptionally expressed in all organs tested, particularly in the
roots at the adult stage. The knockout of OsAP79 impaired rice
resistance to BPH, whereas overexpression (OE) of OsAP79 improved
rice resistance by increasing plant survival rates, and reducing BPH
weight gain and honeydew excretion. Observation of the transverse
section of rice shoots indicated that OE lines of OsAP79 can
significantly enhance sclerenchyma layer thickness. Meanwhile, a
significantly longer or shorter root was detected in the knockout or OE
lines, respectively, which was positively correlated with the indole
acetic acid (IAA) content. Hormone measurement and metabolomic analysis
suggested that IAA biosynthesis, the citric acid cycle, and glycolysis
biosynthesis contributed greatly the OsAP79-induced resistance of
rice against BPH. Collectively, OsAP79 was continuously induced
to express and enhance BPH resistance by reducing the IAA content, which
restricts root growth and increases shoot sclerenchyma layer thickness.
This study demonstrates the previously unappreciated importance of the
AP gene in rice for combating piercing-sucking insect herbivores.
Heart rate variability biofeedback acutely improves attentional control only in highly stressed individuals
Authors: Blaser Berenike , Weymar Mathias , Wendt Julia
Published: February 2023

Vagally mediated heart rate variability is an index of autonomic nervous
system activity that is associated with a large variety of outcome
variables including psychopathology and self-regulation. While
practicing heart rate variability biofeedback over several weeks has
been reliably associated with a number of positive outcomes, its acute
effects are not well known. Because the strongest association with heart
rate variability has been found particularly within the
attention-related subdomain of self-regulation, we investigated the
acute effect of heart rate variability biofeedback on attentional
control using the revised Attention Network Test (ANT-R). Fifty-six
participants were tested in two sessions. In one session each subject
received a heart rate variability biofeedback intervention, and in the
other session a control intervention of paced breathing at a normal
ventilation rate. After the biofeedback or control intervention,
participants completed the ANT-R using the Orienting Score as a measure
of attentional control. Mixed models revealed that higher resting
baseline heart rate variability (RMSSD) was associated with better
performance in attentional control, which suggests more efficient
direction of attention to target stimuli. There was no significant main
effect of the intervention on attentional control. However, an
interaction effect indicated better performance in attentional control
after biofeedback in individuals who reported higher current stress
levels. The results point to acute beneficial effects of heart rate
variability biofeedback on cognitive performance in highly stressed
individuals. Although promising, the results need to be replicated in
larger or more targeted samples in order to reach stronger conclusions
about the effects.
Abordagens de cuidado através da telessaúde para pessoas que vivem com HIV/AIDS durante a pandemia do COVID-19: uma Revisão Sistemática
Authors: Alberti Fernanda , Larrosa Oliveira Helena , Gossenheimer Agnes
Published: February 2023

Objetivos: Identificar as práticas de saúde realizadas para o cuidado de pessoas vivendo com HIV/AIDS durante a pandemia de COVID-19. Métodos: Revisão sistemática de artigos publicados de março de 2020 a fevereiro de 2022 no Pubmed, Embase, Web of Science, Scielo e Lilacs. Os estudos precisam apresentar estratégias de atenção à saúde por meio do uso da telessaúde para pessoas vivendo com HIV/AIDS (PHIVAIDS) durante a pandemia de COVID-19 e ser redigidos em inglês, português ou espanhol. O programa Rayyan foi usado no processo de seleção e a avaliação da qualidade foi realizada utilizando o The Strengthening of the Reporting of Observational Studies in Epidemiology ? STROBE para estudos observacionais e Consolidated Standards of Reporting Trials ? CONSORT para ensaios clínicos randomizados. O estudo foi registrado no PROSPERO (CRD42021254602). Resultados: Foram identificadas 1.870 referências, sendo selecionadas 6 que atenderam ao escopo da revisão. Todos os artigos foram desenvolvidos nos Estados Unidos e escritos em inglês. Dos seis estudos incluídos, apenas cinco apresentaram dados sobre o número de pessoas incluídas em suas pesquisas, com n=5.550. O uso da telessaúde foi direcionado principalmente a jovens adultos pertencentes a populações-chave e prioritárias. As características clínicas antes e depois das intervenções de telessaúde também foram comparadas em estudos que coletaram achados clínicos. Conclusões: A pandemia de Covid-19 pareceu impulsionar a prática da telessaúde, garantindo uma forma de manter essa população assistida, mas as intervenções ainda são relativamente novas e seus efeitos a longo prazo na melhoria da assistência ao HIV ainda precisam ser determinados.
Development of nuclear radiation monitors for radiation early warning systems
Authors: Gostilo Vladimirs , Vlasenko Andrey , Litvinsky Vasily , Krainukovs Igors
Published: February 2023

The results of the development of modern precision monitors of alpha, beta
and gamma ray radiation for setting up early warning systems for radioactive
contamination in the atmosphere and rapid assessment of emerging threats,
are presented. Proportional counters, scintillation SrI (Eu) crystals and
semiconductor Si, CdZnTe, and HPGe detectors are used for 2 the development.
The designed monitors provide information both on dose rate values in real
time and on the activity of specific radionuclides. The software controls
the measurement mode, as well as diagnoses the condition of the monitors
themselves.
Interlaboratory comparison of radiated emission measurements using a tubular dipole
Authors: Kovacevic Aleksandar , Munic Nenad , Brkljac Nenko , Stankovic Koviljka
Published: February 2023

This paper presents an interlaboratory comparison of radiated emission
measurements in the frequency range of 30-1000 MHz. A tubular dipole was
specifically designed and employed as a reference emitting source. The most
important for a tubular dipole is stability in the testing process. The
stability is not the performance of the sample, but the emission signal of
the sample is stable. In addition, two ways of determining the reference
value of the electromagnetic field strength are considered. The first
reference value is obtained by using robust analysis. It is a robust average
value that is calculated by averaging the measurement results provided by
the participating testing laboratories. The other reference value is
obtained through the simulation-experimental results of the tubular dipole
in the semi-anechoic chamber or full anechoic chamber, for horizontal and
vertical polarizations and 3 m distance measurement, respectively. In
addition, this value is assigned by the coordinator. Measurement results are
compared using the robust z-scores and -scores, respectively.
Analysis of terraforming on mars using nuclear power for the beginning of space colonization
Authors: Woo Tae , Baek Chang , Jang Kyung
Published: February 2023

As a historic challenge for humans, Martian colonization has been initiated
by nuclear energy. A moving nuclear power plant could be imaginable known as
a nuclear reactor rover. The design of the nuclear reactor rover has been
performed where the important matter is how to make the caterpillar move the
reactor and its facilities. Hence the slider length and contact point are
proposed. The normalized heat transfer is analyzed by slide length and
contact point where they are normalized as 1.0 and 10.0, respectively.
Although the slider length of the caterpillar is proportional to heat
transfer, the contact point shows the adverse values. Longer slider length
and less contact point could be the optimized heat production system by the
caterpillar which is the additional heat source except the other nuclear
reactor. Any other planet could be considered as a potential human colony
using the nuclear terraforming technology.
Application Tip and Concentration of a Self-mixing Bleach: Hydrogen Peroxide Inside the Pulp Chamber, Color Change, and Amount of Bleaching Gel Used
Authors: Carneiro TS , Favoreto MW , Bernardi LG , Bandeca MC , Borges CPF , Reis A , Loguercio AD
Published: February 2023

Purpose

The objective of this study was to evaluate if the application method (tip with brush or tip without brush) and hydrogen peroxide (HP) concentration (6% or 35% self-mixing) of in-office bleaching gel influences the penetration of HP into the pulp chamber, color change, and the amount of bleaching gel used.

Methods

Forty healthy premolars were randomly divided into the following five groups (n=8): no treatment; HP6% using a tip with a brush, HP6% using a tip without a brush, HP35% using a tip with a brush, and HP35% using a tip without a brush. After treatments, the HP concentration (μg/mL) within the pulp chamber was determined using UV-Vis spectrophotometry. The color change (ΔEab, ΔE00, and ΔWID) was evaluated using a digital spectrophotometer. The amount of gel used (g) in each group was measured using a precision analytical balance. Data from each test were submitted to parametric tests (α=0.05).

Results

The tip with a brush resulted in a lower amount of HP inside the pulp chamber and less gel used when compared with the tip without a brush, regardless of HP concentration (p<0.05). However, regarding the tip used, although no significant difference was observed when HP35% was used (p>0.05), a higher whitening effect was observed when the 6% HP was applied without a brush as opposed to with a tip brush (p<0.05).

Conclusions

The use of a tip with a brush, regardless of the in-office bleaching gel concentration (6% or 35% self-mixing), presented a lower penetration and lower volume of spent gel when compared to a tip without brush. However, the whitening effect depended on the concentration of HP used.
Effect of Salivary Flow on Bleached Enamel Roughness and Mineral Content: anIn SituandIn VitroStudy
Authors: Hauss Monteiro DD , Elias DC , Costa RFO , Carvalho MFF , Ferreira RC , Moreira AN , Magalhães CS
Published: February 2023

This study aimed to evaluate the effect of human saliva in vitro and salivary flow in situ on the roughness and mineral content of bleached enamel. Dental specimens were divided into five groups (n=15): not bleached (NB); bleached (35% hydrogen peroxide) and exposed to distilled water (DW); human saliva in vitro (IV); normal salivary flow in situ (NSF); and low salivary flow (LSF) in situ. Enamel roughness (Ra, Rz) and calcium/phosphorus contents were evaluated with laser profilometry and energy-dispersive spectroscopy, respectively, at baseline (T1), after bleaching (T2), and after seven days (T3). Salivary pH and buffer capacity were evaluated with colorimetric strips and salivary calcium and phosphorus with absorbance spectrophotometry. Data were analyzed with non-parametric tests and linear regression (α=0.05). After contact with saliva, Ra and Rz of LSF=DW>IV=NSF=NB was found. For DW and LSF, the roughness of T1<T2=T3 was found. For IV, T1<T3<T2; for NSF, T1=T3<T2. Enamel calcium/phosphorus content did not change with bleaching or with saliva contact (p≥0.05). Buffer capacity and calcium concentration did not differ between LSF and NSF. Phosphorus was higher, and pH was lower in LSF. Ra and Rz were, respectively, 0.14 and 1.95 lower with NSF than LSF. The conclusions were that NSF in situ and human saliva in vitro recovered original enamel roughness. The experimental conditions did not affect enamel mineral content. Recovery of bleached enamel roughness was higher in NSF when compared to LSF, regardless of salivary pH, calcium and phosphorus concentrations, and buffer capacity.
Surgical Resection of Neonatal Sacrococcygeal Teratoma: An Anaesthetic Challenge
Authors: SK Shenoy
Published: February 2023

Sacrococcygeal teratomas (SCT) are known to originate from pluripotent cells and are among the most common perinatal germ cell tumours with an incidence of 1:30000- 1:40000. Primary treatment is surgical resection. Here we present a case of a term 3.38kg female baby delivered via normal vaginal delivery who presented with a large cystic lesion 10x15cm in size distal to the coccyx. The neonate was posted for surgery on day 2 of life. The procedure was done in lithotomy position and exceeded 4 hours duration. One episode of intra operative hypotension was noted for which IV dopamine infusion was started at 10mcg/kg/minute. Through-out the procedure the body temperature was maintained with body warmer and fluid warmers in place. Blood loss exceeded the maximum allowable blood loss of 100ml which was replaced by packed red blood cells administered at 15ml/kg to a total of 55ml. The baby was shifted to the NICU with endotracheal tube insitu for further management in the postoperative period. Hyperkalemia was noted and corrected in the NICU. The baby was extubated on post-operative day 3 and discharged on day 5 after surgery. Resection of large Sacrococcygeal teratomas can be challenging and requires meticulous planning, vigilance, and a multidisciplinary team approach.
Multimedia Interaktif Untuk Meningkatkan Minat dan Hasil Belajar PAI
Authors: Rohmah Shofiana , Tegeh I Made
Published: February 2023

Kurangnya penggunaan media pembelajaran menurut karakteristik peserta didik, kemudian berdampak pada hasil belajar peserta didik. Tujuan dari penelitian ini yakni untuk mengembangkan multimedia interaktif dan menilai validitas multimedia interaktif. Penelitian ini tergolong kedalam jenis penelitian pengembangan, yang dikembangkan menggunakan model pengembangan Hannafin and Peck. Subjek yang terlibat dalam penelitian ini yakni 1 ahli mata pelajaran, 1 ahli desain pembelajaran, 1 ahli media pembelajaran, 3 siswa uji coba perorangan dan 6 siswa uji coba kelompok kecil. Pengumpulan data dalam penelitian dilakukan dengan metode kuesioner, pencatatan dokumen dan wawancara. Data yang diperoleh dalam penelitian kemudian dianalisis dengan menggunakan teknik analisis deskriptif kualitatif dan analisis deskriptif kuantitatif. Hasil analisis penelitian menunjukkan bahwa multimedia interaktif dinyatakan valid dengan hasil review ahli isi mata pelajaran dengan kualifikasi sangat baik (95%), hasil review ahli desain pembelajaran dengan kualifikasi baik (86%), hasil review ahli media pembelajaran dengan kualifikasi baik (78%), hasil uji coba perorangan dengan kualifikasi sangat baik (92,6%), dan hasil uji coba kelompok kecil dengan kualifikasi sangat baik (94,3%). Hasil penelitian secara umum menunjukkan bahwa multimedia interaktif memiliki kelayakan dan dapat diterapkan dalam proses pembelajaran.
Upaya Meningkatkan Semangat Belajar Siswa melalui E-Modul Berorientasi Discovery Learning
Authors: Dari Ririn Tri Ulan , Sudatha I Gde Wawan
Published: February 2023

Guru mengalami kesulitan dalam menggunakan teknologi mengembangkan bahan ajar ataupun media pembelajaran yang dapat memfasilitasi siswa dalam belajar. Hal ini berdampak pada kurangnya motivasi siswa dalam belajar. Penelitian ini bertujuan untuk mengembangkan modul elektronik (E-modul) berbasis Discovery Learning pada mata pelajaran Teknologi komunikasi dan informasi. Jenis penelitian ini yaitu penelitian pengembangan dengan model ADDIE. Subjek penelitian yaitu 3 ahli yaitu 1 ahli isi pembelajaran, 1 ahli desain pembelajaran, dan 1 ahli media pembelajaran. Subjek uji coba produk berjumlah 9. Metode yang digunakan dalam mengumpulkan data yaitu observasi, wawancara, dan kuesioner. Instrument yang digunakan untuk mengumpulkan data yaitu kuesioner. Teknik yang digunakan untuk menganalisis data yaitu analisis deskriptif kualitatif dan kuantitatif. Hasil penelitian yaitu hasil penilaian dari ahli isi pembelajaran dengan kualifikasi sangat baik (100%). Ahli desain pembelajaran dengan kualifikasi sangat baik (92,5%). Ahli media pembelajaran dengan kualifikasi sangat baik (91,6%). Hasil uji coba perorangan dengan kualifikasi sangat baik (95%), dan hasil uji coba kolompok kecil dengan kualifikasi sangat baik (93%). Dapat disimpulkan bahwa E-modul berbasis Discovery Learning pada mata pelajaran TIK valid dan layak digunakan dalam proses pembelajaran. E-modul yang telah dikembangkan dapat membantu guru dalam mengajar dan meningkatkan semangat siswa dalam belajar secara mandiri.
Multimedia Pembelajaran Pada Mata Pelajaran Bahasa Inggris
Authors: Sumesari Ni Luh , Suartama I Kadek
Published: February 2023

Bahasa Inggris menjadi salah satu Bahasa yang digunakan sebagai alat komunikasi universal masyarakat dunia. Hanya saja kenyataan dilapangan menunjukkan bahwa siswa kelas X cenderung tidak menyukai mata pelajaran Bahasa Inggris karena kurangnya penggunaan media yang menarik dalam proses pembelajarannya. Tujuan dari penelitian ini yakni untuk mendeskripsikan rancangan pengembangan multimedia pembelajaran pada mata pelajaran bahasa Inggris. Penelitian ini adalah penelitian pengembangan dan model pengembangan ADDIE. Subjek yang terlibat dalam penelitian ini yakni tiga orang ahli dan siswa kelas X. pengumpulan data dalam penelitian dilakukan dengan menggunakan wawancara, pencatatan dokumen, dan kuesioner. Analisis data yang digunakan adalah teknik analisis deskriptif kualitatif. Hasil penelitian menunjukkan bahwa hasil review ahli isi mata pelajaran menunjukkan multimedia bahasa Inggris berpredikat sangat baik (92%), hasil review ahli media pembelajaran multimedia menunjukkan produk berpredikat baik (75%), hasil review ahli desain pembelajaran menunjukkan multimedia berpredikat baik (86%), hasil uji perorangan menunjukkan multimedia berpredikat sangat baik (91,3%), hasil uji kelompok kecil menunjukkan multimedia berpredikat sangat baik (92,6%). Berdasarkan hasil tersebut maka dapat disimpulkan bahwa bahwa multimedia efektif untuk dikembangkan dan dibelajarkan kepada siswa kelas X, kususnya untuk meningkatkan hasil belajar Bahasa Inggris siswa.
Meningkatkan Minat Baca Siswa Kelas III Melalui Buku Cerita Bergambar
Authors: Gusti Dewi Vera Rika , Jampel I Nyoman , Parmiti Desak Putu
Published: February 2023

Penelitian ini didasari kurangnya penggunaan bahan ajar yang kreatif dan inovatif. Hal ini berdampak pada minat baca peserta didik. Tujuan penelitian ini yaitu menciptakan buku cerita bergambar pada mata pelajaran tematik muatan lokal Bahasa Indonesia. Jenis penelitian ini menggunakan model pengembangan Hannafin and Peck. Subjek uji ahli penelitian pengembangan ini, yaitu: 1 ahli isi pembelajaran; 1 ahli desain pembelajaran; dan 1 ahli media pembelajaran. Subjek uji coba produk 12 siswa. Metode pengumpulan data yang digunakan, yaitu: observasi, wawancara, studi dokumen, dan kuesioner. Instrument yang digunakan dalam mengumpulkan data yaitu kuesioner. Teknik yang digunakan untuk menganalisis data yaitu analisis deskriptif kualitatif dan kuantitatif. Hasil penelitian pengembangan ini, yaitu buku cerita bergambar dinyatakan valid dengan hasil review ahli isi pembelajaran sebesar 94,54% dengan predikat sangat baik. Hasil review ahli desain pembelajaran sebesar 86,66% dengan predikat baik. Hasil review ahli media pembelajaran sebesar 94% dengan predikat sangat baik. Hasil review uji coba perorangan sebesar 92,77% dengan predikat sangat baik. Dan hasil review uji coba kelompok kecil sebesar 92,14% dengan predikat sangat baik. Dapat disimpulkan bahwa buku cerita bergambar pada mata pelajaran tematik muatan lokal Bahasa Indonesia valid dan layak digunakan untuk proses pembelajaran. Implikasi penelitian ini yaitu buku cerita bergambar dapat digunakan guru dalam pembelajaran.
Environmental Oriented Problem-Based Learning (PBL) Improves Learning Outcomes and Self-Efficacy of Students In Social Studies In Fifth-Grade Elementary Schools
Authors: Arisanti Dewa Ayu Kade , Dantes Nyoman , Suastika I Nengah
Published: February 2023

The lack of teacher abilities and skills in varying the application of learning models impacts low learning outcomes and student self-efficacy in social studies subjects in grade V. This study aims to produce a product in the form of an environment-oriented problem-based learning model. This research belongs to the type of development research that was developed using the 4D model. The 4D model consists of four research stages: defining, designing, developing, and deploying. The subjects involved in this study were social studies learning experts, expert practitioners of 15 high-grade teachers, and 51 fifth-grade elementary school students. Data collection in the study was carried out using non-test and test methods, with research instruments in the form of questionnaires and multiple-choice tests. The data obtained in the study were then analyzed using a feasibility test with validity and product trials. The research analysis results show that the learning model developed gets an average score of 4.9 in the "very good" category. Furthermore, the results of testing the simultaneous effect of environment-oriented problem-based learning models on student learning outcomes and self-efficacy show an influence on the dependent variable (social studies learning outcomes and self-efficacy). Based on these results, the environment-oriented problem-based learning model has very good qualifications, so it is feasible to be applied in the social studies learning process for fifth-grade elementary school students.
Bahan Ajar e-LKPD Berbasis Live Worksheet Pada Pembelajaran IPA untuk Siswa Kelas V Sekolah Dasar
Authors: Ignasia Erlina  , Ni Ketut Suarni  , Ndara Tanggu Renda
Published: February 2023

Penggunaan bahan ajar berupa buku yang biasa dimanfaatkan pada pembelajaran menyebabkan kegiatan belajar menjadi monoton. Ketersediaan bahan ajar yang dirancang dengan menarik dapat berpengaruh terhadap atensi siswa untuk aktif dalam belajar. Tujuan penelitian ini yaitu menciptakan bahan ajar e-LKPD berbasis Live Worksheet pada pembelajaran IPA. Jenis penelitian ini adalah penelitian pengembangan dengan berpedoman pada model ADDIE. Subjek penelitian ini terdiri dari 3 ahli media, 2 ahli materi, 2 praktisi, dan 12 siswa untuk uji respon siswa. Metode pengumpulan data penelitian ini menerapkan metode kuesioner dengan instrumen rating scale sebagai instrumen pengumpulan data. Teknik analisis data yang digunakan adalah teknik analisis deskriptif kualitatif dan kuantitatif. Data yang diperoleh selanjutnya dianalisis untuk menghitung validitas internal serta validitas empiris. Hasil analisis validitas internal berada pada rentang skor 0 < x < 1 dengan kriteria valid. Rata-rata skor penilaian validitas empiris berada pada rentang skor 4,21 ≤ Va < 5,00 dengan kriteria sangat valid.
Pengembangan E-Module Berbasis Aplikasi Android Mata Kuliah Listrik dan Elektronika
Authors: Ahmad Arif  , M. Giatman  , Mukhlidi Musykir  , Hansi Effendi  , Wawan Purwanto  , Wagino
Published: February 2023

E-module yang dikembangkan adalah suatu alternatif bahan ajar yang mampu membantu mahasiswa dalam belajar materi listrik dan elektronika. Tujuan penelitian untuk menghasilkan e-module berbasis aplikasi android yang valid dan praktis. Metode penelitian adalah Research and Development (R&D) dengan model pengembangan 4-D (Four D). Instrumen penelitian menggunakan angket yang dibagi menjadi angket validitas dan praktikalitas. Pada penelitian ini terdapat dua validator yaitu validator materi dan media. Hasil analisis angket dari validator memperoleh nilai rata-rata 0,89 yang dikategorikan valid. Untuk angket praktikalitas diisi oleh dosen dan mahasiswa yang setelah dianalisis memperoleh nilai rata-rata 88% yang dikategorikan sangat praktis. Uji keefektifitasan dilakukan berdasarkan nilai KKM yang diperoleh mahasiswa, yaitu nilai di atas KKM sebesar 86% dan hasil nilai gain score adalah 0,64, sehingga e-module yang dikembangkan dapat dikatakan efektif. Hasil penelitian menyimpulkan bahwa e-module berbasis aplikasi android materi listrik dan elektronika pada program studi Teknik Otomotif FT UNP dapat dijadikan sebagai bahan ajar karena sudah valid, praktis dan efektif.
Media Video Pembelajaran Berbasis Video Scribe Pada IPA Kelas V Sekolah Dasar
Authors: Rezaldi  , I Made Citra Wibawa  , Made Vina Arie Paramita
Published: February 2023

Dalam penerapannya, media belajar belum digunakan secara optimal. Selain itu guru juga menyampaikan materi hanya dengan ceramah. Hal ini tentu akan menyulitkan siswa dalam memahami materi pembelajaran. Tujuan penelitian ini yaitu mengembangkan video pembelajaran berbasis videoscribe pada mata pelajaran IPA untuk siswa kelas V SD. Jenis penelitian ini yaitu penelitian pengembangan dengan menggunakan model ADDIE. Model pengembangan ADDIE. Subjek penelitian yaitu 1 ahli media,1  ahli materi dan 2 praktisi.  Metode pengumpulan data mengggunakan observasi, dan kuesioner. Instrument yang digunakan dalam mengumpulkan data yaitu rating scale. Teknik yang digunakan untuk menganalisis data yaitu analisis deskriptif kualitatif dan kuantitatif. Hasil penelitian yaitu hasil penilaian yag diberikan pada ahli materi pembelajaran yaitu 4,75, sehingga mendapatkan kualifikasi sangat baik. Penilaian yang diberikan oleh ahli media pembelajaran yaitu 4,75 sehingga mendapatkan kualifikasi sangat baik. Penilaian yang diberikan oleh guru yaitu 4,83 sehingga mendapatkan kualifikasi sangat baik. Disimpulkan bahwa Video Berbasis Videoscibe valid dan layak digunakan dalam pembelajaran. Implikasi penelitian ini yaitu video pembelajaran berbasis Videosribe yang telah dikembangkan dapat membantu siswa belajar IPA.
Aneurysm of Right Sinus of Valsalva: A Particular Case Report and Brief Review of Literature
Authors: NUNZIATA LUIGI , Ambrosino Saverio , Volpicelli Mario , Capasso Michele , Caliendo Luigi
Published: February 2023

The aneurysms of sinus of Valsalva are rare cardiac anomalies, which may be either acquired or congenital. A congenital lack of continuity between the aortic media and annulus fibrosus may initiate aneurysm formation. Acquired aneurysms may result from trauma, endocarditis, syphilis, Behcet, atherosclerosis and senile-type dilatation. We report a case of a 38-year-old man who presented with aneurysm of the right sinus of Valsalva with fistula between it and the right ventricular outflow and pulmonary trunk dilatation diagnosed by transthoracic echocardiography (TTE), chest computed tomography (CT) scan and transesophageal ecocardiography (TEE). We describe this case which has been successfully-treated because the concomitant presence of an aneurysm of the right Valsalva sinus, a fistula between it and the right ventricular outflow and pulmonary trunk dilatation represents an extremely rare and poorly described event in the literature.
UPAYA PENINGKATAN KEMAMPUAN GURU PAK DALAM MEMPERSIAPKAN RPP MELALUI SUPERVISI METODE FOCUS GROUP DISCUSSION DI SMP SE-KECAMATAN MEDAN JOHOR KOTA MEDAN
Authors: Manik Chandra
Published: February 2023

Abstrak : Upaya Peningkatan Kemampuan Guru PAK Dalam Mempersiapkan RPP Melalui Supervisi Metode Focus Group Discussion Di Smp Se-Kecamatan Medan Johor Kota Medan. Latar belakang penelitian ini adalah rendahnya kemampuan guru pengampu mata pelajaran Pendidikan Agama Kristen dalam mempersiapkan Rencana Pelaksanaan Pembelajaran (RPP). Masih banyak guru yang belum paham dan termotivasi dalam menyusun Rencana Pelaksanaan Pembelajaran dengan lengkap. Dengan metode Focus Group Discussion, guru dituntut ikut terlibat secara langsung dalam diskusi sesuai skenario yang disusun. Penelitian ini merupakan Penelitian Tindakan Sekolah (PTS). Teknik pengumpulan data yang digunakan dalam penelitian ini berupa format rubrik penilaian. Hasil penelitian menunjukan adanya peningkatan kompetensi guru dalam menyusun RPP yang terlihat dari hasil penilaian dari Siklus I ke Siklus II. Kata kunci : Rencana Pelaksanaan Pembelajaran, Focus Group Discussion
PENINGKATAN AKTIVITAS BELAJAR PKN SISWA MELALUI PENERAPAN MODEL PEMBELAJARAN THINK TALK WRITE (TTW) DI KELAS VII-1 SMP NEGERI 1 BARUSJAHE
Authors: Sitepu Lekton
Published: February 2023

Abstrak : Peningkatan Aktivitas Belajar Pkn Siswa Melalui Penerapan Model Pembelajaran Think Talk Write(TTW) Di Kelas VII-1 SMP Negeri 1Barusjahe. Penelitianbertujuan untuk meningkatkan hasil belajar aktivitas belajar PKn siswa kelas VII-1 SMP Negeri 1 Barusjahe dengan penerapan model pembelajaran Think Talk Write (TTW).Subjek penelitian berjumlah 28 siswa.Data aktivitas siswa pada Siklus I antara lain membaca dan menulis (39%), Mengerjakan LKS (27%), bertanya sesama teman (17%), bertanya kepada guru (9%), dan yang tidak relevan dengan KBM  (8%). Pada Siklus II, menulis dan membaca (23%), Mengerjakan LKS (38%), bertanya sesama teman (16%), bertanya kepada guru (5%), dan yang tidak relevan dengan KBM (3%). Sehingga aktivitas siswa mengalami perbaikan dari Siklus I ke Siklus II.Nilai rata-rata pada siklus I adalah 73 dan siklus II adalah 86. Siswa tuntas pada siklus I adalah 17 siswa (57,14%) dan siklus II adalah 24 siswa (85,71%).                                                                    Kata Kunci :Model Think Talk Write (TTW), Hasil Belajar, Aktivitas Belajar
124 p-ISSN: 2548 - 8856 e-ISSN: 2549 - 127X MENINGKATKAN HASIL BELAJAR SISWA PADA BIDANG STUDI PKN MELALUI MODEL PEMBELAJARAN KOOPERATIF TIPE THINK TALK WRITE DI KELAS IV SD
Authors: Suryani Ratna
Published: February 2023

Abstrak : Meningkatkan Hasil Belajar Siswa Pada Bidang Studi PKN Melalui Model Pembelajaran Kooperatif Tipe Think Talk Write Di Kelas IV SD. Penelitian bertujuan untuk meningkatkan hasil belajar siswa dengan menggunakan model pembelajaran kooperatif tipe Think Talk Write (TTW) di kelas IV SD Negeri 056612 Pasar Batu. Subjek penelitian berjumlah 21 orang siswa. Penelitian berlangsung selama dua siklus dapat disimpulkan bahwa 1) Hasil belajar siswa melalui penerapan model pembelajaran kooperatif tipe TTW berdasarkan pengamatan kedua pengamat mengalami peningkatan dari siklus I ke siklus II. 2) Aktivitas belajar siswa melalui penerapan model pembelajaran kooperatif tipe TTW meningkat dari siklus I ke siklus II.Kata Kunci : Hasil Belajar, TTW, PKn
PENGARUH PENGGUNAAN METODE DISKUSI TERHADAP HASIL BELAJAR IPS PADA SISWA KELAS IV SD NEGERI BABARSARI YOGYAKARTA
Authors: Sitepu Melyani Sari
Published: February 2023

Abstrak : Pengaruh PenggunaanMetode Diskusi Terhadap Hasil Belajar IPS Pada Siswa Kelas IV SD NegeriBabarsari Yogyakarta. Penelitian ini merupakan penelitian eksperimen semu (quasi eksperiment) dengan disain kelompok kontrol non ekuivalen.Penelitian ini dilakukan didua sekolah.Subjek yang digunakan dalam penelitian ini adalah kelas IVB di SD Negeri Babarsari dengan perlakuan metode diskusi, dan kelas IVA di SD Negeri Condongcatur dengan perlakuan metode konvensional.Teknik pengumpulan data yang digunakan dalam penelitian ini adalah tes. Adapun analisis data dilakukan dengan menggunakan statistik Tes t.Hasil penelitian menunjukan perbedaan hasil belajar pada mata pelajaran IPS yang menggunakan metode diskusi dengan yang menggunakan metode pembelajaran konvensional. Hasil analisis data menunjukan bahwa hasil belajar siswa yang belajar dengan metode diskusi rata- rata 20.00 lebih tinggi daripada hasil belajar siswa yang belajar dengan metode konvensional (17.15)Kata Kunci : Hasil Belajar, IPS, Metode Diskusi
PERBEDAAN HASIL BELAJAR IPA MENGGUNAKAN MODEL DISCOVERY LEARNING DAN PROBLEM BASED LEARNING PADA SISWA KELAS 3 SD
Authors: Fatimah Ratih Nurul , Slameto, Slameto, , Radia Elvira Hoesein
Published: February 2023

Abstrak : Perbedaan Hasil Belajar IPA Menggunakan Model Discovery Learning dan Problem Based Learning Pada Siswa Kelas 3 SD. Jenis penelitian yang digunakan dalam penelitian ini adalah penelitian eskperimental menggunakan model nonequevalent grup desain. Subjek dalam penelitian ini adalah siswa kelas 3 SD N Gugus Diponegoro – Grobogan kelas A dan kelas B sejumlah 50 siswa. Hasil uji t skor posttest menunjukkan t hitung 3,583 dan t tabel 2,011 dengan signifikasi 0,49 < 0,05maka Ho ditolak dan Ha diterima, artinya ada perbedaan yang signifikan hasil belajar siswa menggunakan model Discovery Learning dengan menggunakan model Problem Based Learning.Kata Kunci : Model Discovery Learning, Model Problem Based Learning, Pembelajaran IPA.
EFEKTIVITAS PENERAPAN MODEL STAD (STUDENT TEAMS ACHIEVEMENT DIVISION) TERHADAP HASIL BELAJAR MATEMATIKA SISWA KELAS 3 SD
Authors: Rahayu Rahayu , Slameto Slameto , Radia Elvira Hoesein
Published: February 2023

Abstrak : Efektivitas Penerapan Model STAD (Student Teams Achievement Division) Terhadap Hasil Belajar Matematika Siswa Kelas 3 SD. Penelitian ini dilakukan di salah satu sekolah dasar yang berlokasi di desa semagu, kecamatan susukan kabupaten semarang. Tujuan dari penelitian ini adalah untuk membuktikan perbedaan yang signifikan antara penerapan model pembelajaran STAD (Student Teams Achievement Division) dengan model konvensional terhadap hasil belajar matematika peserta didik kelas 3 sekolah dasar. Hasil penelitian menunjukkan bahwa terdapat perbedaan yang signifikan antara penerapan model pembelajaran STAD (Student Teams Achievement Division) dengan model pembelajaran konvensional terhadap hasil belajar matematika peserta didik sekolah dasar.Kata Kunci : Model STAD (Student Teams Achievement Division), Hasil Belajar, Matematika
PENGGUNAAN METODE DEMONSTRASI DALAM MENINGKATKAN HASIL BELAJAR KIMIA PADA MATERI SIFAT KOLIGATIF LARUTAN
Authors: Rismansyah Eduan
Published: February 2023

Abstrak: Penggunaan Metode Demonstrasi Dalam Meningkatkan Hasil Belajar Kimia Pada Materi Sifat Koligatif. Penelitian ini bertujuan untuk mengetahui penggunaan metode demonstrasi dalam meningkatkan hasil belajar kimia pada materi sifat koligatif larutan pada peserta didik kelas XII IPA.9 SMA Negeri 1 Palembang. Dalam penelitian ini terdapat beberapa siklus. Setiap siklus terdiri atas 4 tahap kegiatan yang saling terkait dan berkesinambungan yaitu: perencanaan tindakan (planning), pelaksanaan tindakan (acting), pengamatan (observing) dan refleksi (reflecting). Subjek yang dimaksud tindakan dalam penelitian ini adalah peserta didik kelas XII IPA.9 SMA Negeri 1 Palembang yang berjumlah 29 peserta didik. Data yang diperoleh berupa hasil tes formatif, lembar observasi kegiatan belajar mengajar. Dari hasil analis didapatkan bahwa ketuntasan belajar meningkat dari sebelum tindakan dan sesudah tindakan, yaitu; pra siklus (52,71%), siklus I (72,41%), dan siklus II (89,66%).Kata Kunci: Kimia, Metode Demonstrasi
Modelling and simulation of Adhesion of the RAIL vehicle
Authors: Lewandowski Mirosław , Grzesikiewicz Wiesław , Makowski Michał , Rutczyńska-Wdowiak Katarzyna
Published: February 2023

In the paper we consider the issue related to the phenomenon of wheel-to-rail adhesion. This issue concerns self-excited vibrations in the area of wheel-rail contact, caused by unstable friction. Such friction is characterized by decreasing values of the friction coefficient with increasing slipping velocity. The paper includes mathematical formulation of the problem and presents the method for solving it. In addition, a simulation of elementary vehicle driving was performed. During the simulation, self-excited vibrations arose during wheel slip caused by high driving torque. The paper presents graphs illustrating the tangential force and the slipping velocity during these vibrations.
Las parroquias del arzobispado de México según el libro de gobierno de Manuel Rubio y Salinas, 1749-1765
Authors: Álvarez Icaza Longoria María Teresa
Published: February 2023

En este trabajo se usará el libro de gobierno de Manuel Rubio y Salinas como fuente para conocer la dinámica de las parroquias del arzobispado de México hacia la segunda mitad del siglo XVIII. En ese libro se hace visible la constante intervención de la mitra para regular la presencia y movilidad del personal eclesiástico de los curatos, así como en los ajustes realizados a la estructura parroquial. Igualmente, se hace presente la mediación del prelado en los conflictos entre los curas y los feligreses
La visita pastoral tridentina en tiempos de Lobo Guerrero, un caso de estudio. Lima, siglo XVII
Authors: Cordero Fernández Macarena
Published: February 2023

El objetivo del siguiente artículo es dar cuenta de las dificultades que tuvo el arzobispo Bartolomé Lobo Guerrero durante su gobierno al delegar las visitas pastorales en sacerdotes ad hoc, especialmente en lo que dice relación con las doctrinas de indios administradas por doctrineros regulares. En efecto, el arzobispo de Lima debió hacer frente tanto a las críticas de las autoridades regias como a las de la iglesia local, por no llevar a cabo las visitas personalmente. Asimismo, debió imponerse ante los doctrineros regulares, quienes se negaban a reconocer la jurisdicción eclesiástica del arzobispo. Sobre la base de un estudio de caso, entrecruzado con correspondencia, concilios y doctrina canónica, se devela de qué manera se materializaron los objetivos tridentinos que buscaban la adecuada transmisión de la sana doctrina, así como la reforma de la disciplina, en la extensa diócesis limeña.
Securing Purchase Intention of E-Commerce Users: the Nomological Validity of Branding and Trust
Authors: Mahmud Amir
Published: February 2023

It is getting hard for digital brands to secure an edge over competitors; moreover, securing transaction deals. Amid E-Commerce offerings, brand awareness and image are strategically positioned in decision-making. Thus, this study explores this issue by analyzing the nomological validity of brand awareness and brand image on consumers’ trust and purchase intention. 165 response rates are secured and presented quantitatively by employing the variance-based PLS-SEM. The results support all hypotheses as well as the mediating effects. The brand image emerges as the most potential strategic position for managerial discretions upon building trust and purchasing decisions among e-commerce users.