bluuebunny/crossref_metadata_2025 huggingface dataset:
PENGARUH TAX AVOINDANCE, UKURAN PERUSAHAAN, LEVERAGE, DAN UMUR PERUSAHAAN TERHADAP BIAYA UTANG (COST OF DEBT)
Authors: Daffa A Rhesa , Hizazi Achmad , Yetti Susfa
Published: July 2023

Penelitian ini bertujuan untuk memperoleh bukti empiris dan menguji pengaruh Penghindaran Pajak, Ukuran Perusahaan, Leverage, Umur Perusahaan terhadap Biaya Hutang (studi empiris pada perusahaan subsektor makanan dan minuman yang terdaftar di bursa efek Indonesia tahun 2017-2020). Jenis penelitian ini adalah kuantitatif dengan menggunakan data sekunder yang diperoleh dari website resmi perusahaan dan dari website resmi Bursa Efek Indonesia.
Metode penelitian ini menggunakan metode analisis regresi linier berganda. Hasil penelitian menunjukkan bahwa Penghindaran Pajak, Ukuran Perusahaan, dan Leverage secara parsial berpengaruh terhadap Biaya Hutang, dan Penghindaran Pajak, Ukuran Perusahaan, Leverage, dan umur perusahaan secara simultan berpengaruh terhadap Biaya Hutang. Sedangkan umur perusahaan secara parsial tidak berpengaruh terhadap Cost of Debt.
Promoting electrocatalytic CO2 reduction to CO via Sulfur-Doped Co-N-C Single-Atom Catalyst
Authors: Wei Zhiming , Liu Yuhang , Ding Jie , He Qinye , Zhang Qiao , Zhai Yueming
Published: July 2023

Electrocatalytic reduction of CO2 to fuels and chemicals possesses huge
potential to alleviate current environmental crisis. Heteroatom doping
in metal-nitrogen-carbon (M-N-C) single-atom catalysts (SACs) has been
found capable to promote the electrocatalytic CO2 reduc-tion reaction
(CO2RR). However, the origin of the enhanced activity is still elusive.
Here, we report that sulfur-doped cobalt-nitrogen-carbon single-atom
catalyst (Co1-SNC) exhibits superior CO2RR performance compared to
sulfur-free counterpart (Co1-NC). On the basis of in situ attenuated
total reflectance surface-enhanced infrared absorption spectroscopy
(ATR-SEIRAS), kinetic isotope effect (KIE) and theoretical calculation,
it is demonstrated that sulfur doping can promote water activation,
elevate the d-band center of Co active site, and reduce the free energy
of *COOH intermediate formation. This work deepens the understanding of
the CO2RR chemistry over heteroatom-doped SACs for designing efficient
CO2RR processes.
Understanding About LGBT Among Student in a Public Higher Learning Institution
Authors: Abdullah Zakaria , Amat Salleh
Published: July 2023

LGBT culture has permeated into Malaysian society. It permeates society regardless of educational background, religion and even to students and Professionals. The purpose of this study is generally to explore the understanding of LGBT among students in an IPTA. Specifically, to research IPTA students’ understanding about LGBT issues and inquire into IPTA students’ perception among LGBT groups in Malaysia. The participants included a total of fifteen (15) IPTA students pursuing undergraduate studies were selected using the qualitative methodology was based on a semi-structured interview of LGBT issues. The participants consisting of Malays, Chinese and Indians age range 20 to 23. The study was conducted at an IPTA in Malaysia. The results of this study were analysed using the content analysis method of the respondents' actual sentences. The results of the LGBT understanding study have found themes and codes of understanding of LGBT acronyms, same-sex relationships, bisexual relationships, and gender exchange. Themes and codes relating to perceptions of religion are contrary to human nature, contrary to eastern culture and open-minded. The findings of this study can provide an in-depth understanding of LGBT in public institutions and help stakeholders formulate principles and policies to address LGBT issues.
Development of Character Assessment Instruments for Student
Authors: Indy WismaDewi I Gusti Ayu Putu , Suarni Ni Ketut , Dantes Nyoman Dantes
Published: July 2023

This study aims to develop instruments for evaluating the character of Vocational High School students as well as knowing the validity of the instrument items, and the instrument reliability of the experts and practitioners. The type of research used is research and development (R&D), the research model used is Four-D (4D). The 4D model consists of four stages of research namely define, design, develop, and disseminate. Analysis of the data used is to test the validity of manual book product content with the Lawshe CVR and CVI formulas. Tests carried out by 5 experts or experts who are competent in the field of Counseling and Psychological Guidance. The results of the study based on content validity analysis are the CVR values per item obtained between +1 to 0 (CVR> 0). Furthermore, the results of the Lawshe CVI analysis obtained a score of 0.97 greater than 0 (0.97> 0). Based on the analysis of these data means the value of the validity of the instrument content is high and for the reliability results obtained at 0.78> 0.60 thus all items of the questionnaire are declared reliable
Research on computer network security protection technology based on a superiority algorithm
Authors: Wang Zhenghui
Published: July 2023

The rapid development of computer network technology has brought great convenience to all walks of life and made the transmission of various information faster. A secure and reliable computer network environment has a critical impact on the functioning of the computer network. In this paper, we derive and analyze the detection probability, false alarm probability and judgment threshold of the new algorithm based on the results of random matrix theory based on the feature-fitting superiority algorithm, which can exhibit better detection performance. In the framework of matrix theory, the superiority algorithm reduces the problem of network security to some extent and improves the performance relative to other fitted superiority detection algorithms. For common threats to network security, give the corresponding ideas to deal with network security issues from a technical perspective. The detection rate and false alarm rate are calculated by testing the total number, the number of intrusion bars, the number of detected intrusion bars, and the number of false alarm bars detected by the system, respectively. The test results show that the average detection rate is still greater than 94%, the average false alarm rate has improved, and the average false alarm rate is controlled at about 3.1%, which can fully meet the system requirements. Give reference to further enhance the reliability and stability of network security systems.
Research and practice of blaze new trails and start an undertaking cultivate model based on big data technology in computer special field of study
Authors: Cai Jingjing , Liu Ruijuan , Li Yang
Published: July 2023

With the advent of the era of big data and cloud computing, big data is more and more widely used in various industries, and the research and practice of using big data technology to realize blaze new trails and start an undertaking cultivate mode in computer special field of study will become an important focus of the blaze new trails and start an undertaking cultivate system nowadays. In this paper, we construct the blaze new trails and start an undertaking cultivate model based on BP ANN, construct the blaze new trails and start an undertaking cultivate evaluation index system through Delphi method, and finally design the model of blaze new trails and start an undertaking cultivate evaluation in order to analyze the results of blaze new trails and start an undertaking cultivate. The scoring results correspond to the data of 21 evaluation indexes of a student, and the various scores can map to the level of individual students’ blaze new trails and start an undertaking ability, and provide effective countermeasures for computer special field of study students’ blaze new trails and start an undertaking cultivate. This paper effectively evaluates the blaze new trails and start an undertaking ability of students, broadens the application value and research field of BP ANN, and actively explores the blaze new trails and start an undertaking cultivate of computer special field of study students, which helps the operation mode of blaze new trails and start an undertaking cultivate of computer special field of study special field of study, provides step foreward ideas, and is of great significance to promote the step forward of blaze new trails and start an undertaking cultivate mode.
Coordinated development of international e-business and international express under the digital background
Authors: Zhang Ying
Published: July 2023

The current global consumer market is developing in the direction of digitalization, and international e-business incorporation also has to face the proposition of digitalization and make adjustments in international express. The orderliness of the two subsystems of international e-business and international express in China has been growing year by year, while the synergy of the composite system has been relatively low and belongs to a low degree of coordination. This paper takes international e-business and international express as the research objects, uses composite system theory and synergy theory, measures the synergy between international e-business and international express nationwide by establishing a composite system synergy evaluation index system, and analyzes the reasons for the lack of synergy between the two, and puts forward countermeasure suggestions to realize the synergistic development of the two, which is of great significance to innovate the operation mode of international express, build an integrated e-business platform, and promote the coordinated development of international e-business and international express in China.
A Study on Green Consumption Behavior of Young People Empowered by Digital Economy Based on Double Goal Constraints
Authors: Fu Guanglu , Ding Zhihua
Published: July 2023

Promoting a green consumption economy to achieve steady improvement in quality and reasonable growth in quantity is not only the immediate need to cope with the slowdown of economic growth, but also the long-term strategy to build a new development pattern. In this paper, a green consumption behavior model is created under the constraints of the environmental technology model and green consumption concept model. Through the numerical empowerment comparison of five elements in the green consumption behavior model: behavioral attitude, subjective norm, perceived behavioral control, behavioral intention, and individual behavior, we analyze and study the influence of the constraints of environmental technology and the green consumption concept on the green consumption behavior of contemporary young people. The experiment proves that the direct effect value of the environmental technology goal constraint is 0.5412 and the indirect effect value is 0.6354 under the mediating effect of dual goal constraint. The direct effect value of the green consumption concept constraint was 0.3652 and the indirect effect value was 0.2376. This verifies that the green consumption behavior of young people is determined by the environmental technology constraint and the green consumption concept constraint, which enhances the ethics of consumers’ green environmental protection and effectively promotes the government’s measures for green information and green policies, which can provide ideas for achieving sustainable environmental and economic development.
A New Inquiry into the Ideological and Political Education of College Students in the Context of Free Trade Port
Authors: Li Changyu , Zhang Guochao , Peng Shijun , Huang Liangying
Published: July 2023

Ideological and political education is the fundamental guarantee to realize the goal and direction of college students’ talent training, and the key factor of Hainan free trade port construction is talent. Therefore, this paper carries out a new exploration of the ideological and political education of college students based on the background of free trade ports and selects the SPOC hybrid teaching model to carry out the ideological and political education of college students. Using the AHP-FCE evaluation mechanism, we construct the AHP three-level evaluation indexes and establish the FCE evaluation factor set. By calculating the affiliation matrix and hierarchical weight vector of the three-level index set, we make a comprehensive evaluation of the feasibility and effectiveness of the SPOC hybrid teaching model in ideological and political teaching and prove that it can improve students’ ideological and political performance and cultivate talents. In this paper, we conducted experiments in five colleges and universities and proved that students’ performance in ideology and politics under the SPOC hybrid teaching model increased from only 60 passing marks to more than 75 marks per capita. The teachers’ teaching time of ideology and politics also increased by at least 5 hours and at most 7 hours based on the original one. It can be seen that the SPOC teaching model applied to the ideological and political education of college students can significantly improve the ideological and political achievements of students, and can provide a steady stream of high-quality talents for the construction of the Hainan free trade port.
Analysis of risk factors for multi-drug resistant bacterial infections and prevention and control based on logistic regression analysis
Authors: Guo Changcheng , Jia Liping , Li Yan , Chen Xiuqin , Yang Kun
Published: July 2023

Logistic regression and neural networks have developed rapidly in recent years, and the poor diet of people in modern society has led to the emergence of various diseases in which drug-resistant bacterial infections occur during treatment, so this paper proposes logistic regression to analyze risk factors and preventive control of multi-drug-resistant bacterial infections. A logistic regression model was established to determine the magnitude of the effect of each factor on the dependent variable based on the standardized values, and the prevalence was recoded in the prediction stage, with the screened indicators serving as factors and covariates. The number of neurons in the input and output layers is determined, and the weights are continuously adjusted in iterations to calculate the average error rate between the actual number of morbidities and the predicted values. The gradient explosion and dispersion problems of in-depth analysis are solved by selecting the maximum probability for classification. The error values were calculated by using the cost function, adjusting the model parameters, comparing the errors between predicted and observed values, and updating the weights with the hidden layer error values, thus improving the accuracy of the model for analyzing risk factors of multi-drug resistant bacterial infections and preventing and controlling the deterioration of the disease. The analysis of the results showed that the logistic regression analysis method, using the area of the ROC curve as a discriminant, yielded an AUC of 0.831 in this study, which combined with the neural network model to predict multi-drug resistant bacteria infections with a higher accuracy of 85.6%, identify the potential risk of multi-drug resistant bacteria occurrence, and prevent the aggravation of the infection.
Research on the coordinated development of cross-border e-commerce and logistics under the background of big data
Authors: Tang Yuzang
Published: July 2023

Cross-border electronic platform trade is an important embodiment of the digitalization of international trade, with much attention and response to national policies. This is a global business activity in which traders from different countries negotiate and conclude deals online, and the flow of goods is realized through international transportation. Taking the effectiveness of the coordinated development of cross-border trade and international transportation as the direction of exploration, we study the development mechanism of the harmonious, proper coordination, and virtuous cycle of both from the digital background. According to the established model assumptions, based on the principles of science, objectivity, operability, and representativeness, the evaluation system of coordinated development level is constructed, and the subsystem sequential covariate efficacy function and the composite system coordination degree are calculated. From the results of correlation and coordination degree analysis, it shows that the total volume of transactions in this form of trade grows from $1.4 trillion in 2013 to $8.7 trillion in 2020, with an average annual growth rate of 32%. The orderliness of the cross-border logistics subsystem keeps increasing between 2013 and 2020, and the growth rate reached an average of 15.84 %/year. On the whole, the orderliness of each of the two subsystems steadily increases year by year. The resulting coordinated development trend of electronic trade between countries and international transportation coincides with the electronic trade between countries stepping into a brand-new development period, which is sufficient to verify the science and reasonableness of the evaluation system.
Opportunities and Challenges of New Media Technology for Civic Education of College Students under the New Normal
Authors: Zhang Cheng , Shen Xiaoqin
Published: July 2023

The rapid development of new media has influenced the creation and dissemination of online social opinion, adding a new opportunity and challenge to universities. This paper studies the integration of new media technology and students’ ideological education in schools, and discusses the development and challenges of new media in the application of students’ ideological education on campus. It integrates the characteristics of new media, builds an efficient ideological education service platform, gives full play to the advantages of excellent network technology, and deeply studies the development lines of ideological work in higher education institutions. The basic theory of gray correlation is applied to measure the deep gray correlation degree of each index, simplify the original evaluation index system system, and analyze the correlation coefficients of the research sample version by the logicality of deep gray correlation. The 15 research sample versions of indicators are used as the input values, and the relevant values are used as the derived values. Based on the practice of BP neural system network, a new evaluation index system system of media education ideas based on BP neural system network is summarized. A large-scale research was conducted on the application of new media service platform in higher education institutions. 82% of students said that this educational concept was effective and achieved the purpose of improving ideological educationv in higher education institutions.
Research on the application of virtual reality technology in the teaching resource library of film and animation
Authors: Wang Xiaoting
Published: July 2023

With the rapid development of computer communication technology, virtual reality technology is getting more and more attention. The application of virtual reality technology allows participants to enter the virtual environment and can interact with people or objects in the virtual environment, from the process to producing real feelings, the current reform of university teaching has promoted the continuous improvement of many universities in the teaching process, the application of virtual reality technology to support film and television animation teaching activities is one of the ways. This paper combines the actual situation of the application of virtual equipment in the animation teaching resource library, and elaborates on the shortcomings of the traditional animation teaching mode and the application effect of modern virtual reality technology equipment in the animation teaching resource library, aiming to provide an effective reference for film and television animation teaching, to effectively improve the talent cultivation mode of colleges and universities and significantly improve the teaching quality in both teaching and learning.
Mobile visual media design based on artificial intelligence and augmented reality technology
Authors: Wang Xiaoting
Published: July 2023

In recent years, with the development of computer and network technologies, digital video and image information is emerging more and more, the information era based on multimedia information services is coming to us, and people’s demand for visual media content such as video and images is becoming more and more extensive. In this paper, we use the Gaussian mixture model pixel detection technology method and image detection technology to study visual media to meet the various needs of users. SVM is used to perform classification tests on 3688 Chinese painting images and 4827 general images. The result is that the positive detection rate of national painting images is 87.25%, and the rate of non-national painting images being wrongly detected as national painting images is 7.63%. This indicates that the CCV feature also has a relatively good discriminative property for national painting images. The focus is on providing technical methods for the design of various visual media shapes such as sports and art, thus providing solutions to help users better access and use the digital multimedia information they are interested in.
The improvement path of international Chinese education management in universities based on big data technology
Authors: Zhang Xiangli
Published: July 2023

The short video under the wave of the big data era is as crazy as the rain, with all kinds of online hot words abuse, subvert the three views the pompous funny video, using Chinese text stems lead to many college students and teachers Chinese culture level decline, Chinese culture awareness is weak, Chinese education management along the traditional, education management can not keep up with the innovation of the times to study the problem. In this paper, the improvement path of international Chinese education management in colleges and universities based on big data technology is studied, and the incremental update model of data is constructed by calculating the dissimilarity of users and items and getting the dissimilarity matrix. According to the neighborhood rating data, the iu-User CF algorithm provides users with more qualified items. The experimental analysis results show that the algorithm maintains more than 90% accuracy and stability. It shows that the system library of the algorithm is stable and efficient. Education management should innovate development ideas, broaden horizons, adapt to the new era, new situation, and new trends, seize new development opportunities, explore new paths for reform, unite Chinese and foreign cooperation, serve world needs, and promote digitalization, intelligence, and modernization of international Chinese education.
Analysis of student management path optimization in higher education institutions with ISM
Authors: Zhang Yan
Published: July 2023

With the national emphasis on vocational education and the reform of the examination and enrollment system of higher vocational education, the scale of students in higher vocational colleges and universities has been expanding, and the enrollment channels and student source types have been diversified, especially the characteristics of student source in local higher vocational colleges and universities are more prominent. The traditional student management mode has been difficult to meet the needs of students’ development and talent training mode. As an important part of education and teaching in colleges and universities, the effectiveness of student management determines the success or failure of ideological and political education of college students and the safety and stability of colleges and universities and is also related to the cultivation of high-quality technical and skilled talents needed by the society. Therefore, taking Jiyuan Vocational and Technical College as an example, this paper finds that 66% of the teachers and students think that the student management concept is backward, 58% think that the student management mode is single, 74% think that the student management system is not perfect, 58% think that the student management mode is rigid, and 59% think that the student management personnel are not of high professional quality in student management. The analysis of the results shows that using the hierarchical student management model based on ISM analysis makes the student management model with reasonable and effective articulation and operation, scientific and smooth implementation, and builds a set of effective student management systems in higher vocational institutions, which has certain theoretical and practical significance for the implementation of student management in higher vocational schools.
STUDY OF OCCUPATIONAL SAFETY AND HEALTH ON BLASTING PROCESS IN ANDESITE STONE MINING AREA WITH HIRAC METHOD IN CV. ARTHA AGUNG BERSAMA, HULU GURUNG SUB-DISTRICT, KAPUAS HULU REGENCY
Authors: Prasetio Abraham , Sutrisno Hendri , Mukhtar Wahdania , Meilasari Fitriana , Syahrudin Syahrudin
Published: July 2023

CV. Artha Agung Bersama is an andesite mining company that uses a blasting system. This mining activity can harm workers if they do not apply good K3 management in blasting activities. One of the hazards of blasting activity is flying rock. For this reason, it is necessary to identify potential hazards, assess the level of accident risk, and recommend risk control efforts. The method in this study is the HIRAC (hazard identification risk assessment and control) method. This activity has five potential hazards: broken drum straps, worker negligence, explosive sounds, fly rock, and workers walking in a hurry in locations with a lot of gravel. There are five risks of accidents from potential hazards: being hit by a drum, scratched hands, pinched fingers forming a critical cover, slipping, exposure to diesel fuel, hearing loss, and being hit by a rock. Of the five hazard risks, three risks are included in the priority one category, namely: scratched hands, pinched fingers forming key covers, slipping, exposure to diesel fuel, and being hit by rocks. One risk is included in priority category three: being hit by a drum. One risk category is very high, namely being hit by a rock. The recommended risk control hierarchy for blasting activities is engineering control, administration, and personal protective equipment.
THE ACADEMIC STAFF’S PERCEPTIONS TOWARDS ONLINE EDUCATION DURING THE COVID-19 PANDEMIC
Authors: KUTASI Reka
Published: July 2023

The outbreak of the COVID-19 pandemic has prompted the closure of educational institutions worldwide. As a result, most educational institutions shifted to online learning platforms to keep up with instructional activities. This study aims to determine how teachers perceive the online teaching and learning context at the George Emil Palade University of Medicine, Pharmacy, Science, and Technology of Târgu Mureş (UMPhST), Romania. An online questionnaire was created in Google Forms and sent to the academic staff at the university to evaluate the efficacy, drawbacks, and benefits of online education. A total of 139 faculty members from different departments completed the questionnaire thoroughly. According to the findings, more than half of those questioned agreed that online teaching is essential during pandemic times, but it is not a long-term solution. The difficulty of engaging students in practical activities, the lack of feedback, and the difficulty in fulfilling online assignments are just some of the challenges that were brought about. Furthermore, the survey identifies the traits of online courses the respondents preferred and additional challenges they encountered throughout this demanding time.
HAVE THE ROMANIAN SCHOOLS BECOME LEARNING ORGANISATIONS? VIEWS OF THE TEACHING STAFF
Authors: DÎNŞOREAN Adela Diana , SAVA Simona Lidia
Published: July 2023

To meet the diverse needs of students in complex social environments, it is necessary to transform schools into learning organisations (Fullan, 1993; Sava, 2022). Empirical evidences show that learners make significant progress when schools exhibit the characteristics of learning organisations (Harris & van Tassell, 2005; Schechter & Qadach, 2012; Silins & Mulford, 2004). The “learning organisation” approach is necessary and suitable for schools, regardless of their operating context, thus providing a sustainable competitive advantage (Kools & Stoll, 2016; OECD, 2016). Staff in a school may have different perceptions about the extent to which their school is a learning organisation. In this study, we investigated if perceptions about the status of the school as a “learning organisation” differs significantly according to variables such as the school environment, the staff ’s position and seniority. The online questionnaire, applied in April-May 2022, was filled in by 650 participants (70 principals, 543 teachers and 37 auxiliary teaching staff) from 248 Romanian schools. Self-reported data were collected using the instrument developed by Kools et al. (2020), validated in the Romanian context. The results show significant differences among the participants’ responses in relation to the school environment and in terms of the respondents’ position in the school. Data showed no statistically significant difference among the participants’ responses in terms of seniority. The results of the current research represent a useful step in the process of evaluating Romanian schools, with the aim to transforming them into learning organisations.
Fatty acid composition of beef and pork with different types of animal fattening
Authors: Tishenkov Pyotr Ivanovich , Vasiliev Alexey Alekseevich , Bykov Dmitry Vladmirovich
Published: July 2023

The article presents data on the chemical, fatty acid composition of beef and pork meat in various types of fattening. The nutritive value of beef obtained from grain and traditional cattle feeding, as well as concentrate-type pork was studied. Significant differences in the content of protein, fat, individual fatty acids in meat are shown: saturated, unsaturated and polyunsaturated. It has been established that the concentrate type of feeding cattle leads to a violation of scar digestion and metabolic processes in the animal body. Long-term, for 200 days, feeding a large amount of grain leads to a fivefold increase in the content of fat in beef, a decrease of 23.2% in the concentration of protein in muscle tissue compared to beef obtained according to traditional technology and 3.1% with concentrate-type pork of fattening, therefore, and quality.
Kajian Kolom Adsorpsi Zat Warna Methyl Orange menggunakan Adsorben dari Ampas Teh
Authors: Sylvia Novi , Damanik Syafriandi , Muhammad Muhammad , ZA Nasrul
Published: July 2023

Methyl orange merupakan zat warna yang banyak digunakan dalam pewaraan kain dan berbagai bidang lainnya. Methyl orange merupakan zat warna azo karsinogenik yang dapat terlarut dalam air dan juga zat warna ini juga dimetabolismekan menjadi amina aromatik sehingga bersifat stabil memiliki biodegradibilitas yang rendah sehingga sulit untuk menyisihkannya dari larutan cair dengan metode pemurnian atau pengelolaan air biasa. Metode pemurnian yang dapat dilakukan yaitu dengan proses adsorpsi menggunaka adsorben. Penelitian ini bertujuan untuk membuat adsorben dari limbah ampas teh dengan aktivasi HCl untuk menyerap limbah dari methyl orange dengan menggunakan kolom adsorpsi. Adsorben dari ampas teh dikarakteristikan gugus nya dengan uji FTIR pada sebelum aktivasi, sesudah aktivasi dan setelah adsorpsi. Penelitian ini dilakukan untuk mengkaji pengaruh konsentrasi zat warna terhdap adsorpsi, mengetahui kesetimbangan adsorpsi Langmuir dan Freunderich serta model kinetika adsorpsi model orde satu semu dan orde dua semu. Hasil penelitian yang didapat yaitu efesiensi penyerpan terbaik sebesar 55,579% dan kapasitas adsorpsi maksimum sebesar 0,54  mg/g yang didapat pada adsorben dengan tinggi unggun 16 cm dan konsentrasi sebesar 30 ppm. Sehingga semakin meningkat massa atau tinggi unggun  adsorben maka semakin meningkat  efesiensi dan kapasitas pemyerapan. Kesetimbangan adsorpsi yang sesuai yaitu isotherm Freundlich dengan nilai koefesien korelasinya (R2) sebesar 0,997. Untuk model kinetika yang menggambarkan lebih tepat pada model orde dua semu.
Pemanfaatan Ekstrak Nikotin dari Limbah Puntung Rokok menjadi Insektisida
Authors: Erian Fioza Ozly , Muarif Agam , ZA Nasrul , Ginting Zainuddin , Zulnazri Zulnazri
Published: July 2023

Insektisida adalah jenis pestisida untuk memberantas serangga. Nikotin adalah senyawa alkaloid utama dalam daun tembakau yang aktif sebagai insektisida. Nikotin pada penelitian ini diperoleh dari hasil ekstraksi dari limbah puntung rokok. Tujuan dari penelitian adalah mempelajari pengaruh variabel waktu ekstraksi dan volume pelarut pada jenis sampel yang digunakan,  menentukan rendemen dan densitas nikotin dari sampel yang digunakan, menentukan pengaruh nikotin terhadap presentase kematian serangga, dan mengetahui kandungan insektisida yang dihasilkan menggunakan GC-MS (Gas Chromatography Mass Spectrometry). Metode yang digunakaan untuk memperoleh ekstrak nikotin adalah metode ekstraksi maserasi dengan menggunakan pelarut etanol absolute 96%. Berdasarkan hasil penelitian, sampel terbaik terdapat pada variasi waktu ekstraksi 72 jam dengan volume pelarut 250 ml dengan rendemen tertinggi yaitu 15,07%, densitas sebesar 1,0014 gr/ml, dan presentase kematian serangga tertinggi sebesar 86%. Kandungan insektisida pada uji menggunakan GC-MS adalah nikotin sebesar 71,85%, dan fenol sebesar 28,15%. Hal disebabkan karena semakin lama waktu ekstraksi dan semakin banyak volume pelarut maka semakin tinggi rendemen dan densitas nikotin yang dihasilkan serta semakin tinggi pula presentase kematian serangga.
Pemanfaatan Pelepah Pisang Sebagai Bahan Baku Pembuatan Hand Sanitizer
Authors: Varissa Sri Dea , Bahri Syamsul , Zulnazri Zulnazri , Kurniawan Eddy , Za Nasrul Za
Published: July 2023

Hand sanitizer merupakan salah satu bahan antiseptik berupa gel yang sering digunakan masyarakat sebagai media pencuci tangan yang praktis. Penggunaan hand sanitizer lebih efektif dan efisien bila dibanding dengan menggunakan sabun dan air sehingga masyarakat banyak yang tertarik menggunakannya. Antiseptik atau hand sanitizer bila digunakan terus menerus dapat berbahaya dan mengakibatkan iritasi hingga menimbulkan rasa terbakar pada kulit. Oleh karena itu, untuk mencegah iritasi pada kulit dalam pembuatan hand sanitizer menggunakan ekstrak pelepah pisang yang mengandung flavonoid, saponin, dan tanin yang bersifat antibakteri dengan penambahan alkohol kurang dari 65% dan triklosan. Penelitian yang pernah dilakukan terdahulu adalah memanfaatkan pelepah pisang daun sedangkan untuk penelitian ini menggunakan pelepah pisang yang di dapat dari batang pisang, lalu pada penelitian sebelumnya hanya berbentuk perasan (air) tetapi pada penelitian yang dilakukan sekarang di ubah menjadi bentuk gel supaya bisa bertahan lebih lama. Tujuan penelitian ini untuk mengetahui uji organoleptik dengan parameter warna, aroma, pH dari hand sanitizer dalam bentuk gel berbahan pelepah pisang dengan penambahan alkohol dan triklosan. Penelitian ini merupakan penelitian eksperimental rancangan acak lengkap (RAL) pola faktorial dengan analisis data deskriptif kualitatif. Faktor satu yaitu konsentrasi ekstrak pelepah (P), P1 = 5 mL, P2 = 5,5 mL, P3 = 6 mL dan faktor dua yaitu perbandingan alkohol dan triklosan (A), A1 = 3 mL: 2g, A2 = 2 mL: 1,75 g, A3 = 1 mL: 1,5 g. Hasil uji organoleptik warna putih susu dan aroma berbau khas pisang yang paling pekat terdapat pada perlakuan P2A3 dan P3A2 pH pada semua perlakuan bervariasi antara 6-7 tergantung formulasi. Kata Kunci : Alkohol, Ekstrak Pelepah Pisang, Gel, Hand Sanitizer, Triklosan
PENGGUNAAN LIMBAH KULIT PISANG AMBON Musa paradisiaca var. sapientum (L.) Kunt.) SEBAGAI BAHAN CAMPURAN DALAM PEMBUATAN SABUN MANDI TRANSPARAN
Authors: Zuhra Aldilla , Hakim Lukman , Azhari Azhari , Suryati Suryati , Mulyawan Rizka
Published: July 2023

Sabun adalah garam logam alkali (biasanya garam natrium) dari asam lemak yang dihasilkan dari reaksi saponifikasi asam lemak dengan alkali bebas. Sabun mengandung terutama garam C16 dan C18, dapat juga mengandung beberapa karboksilat dengan bobot atom lebih rendah. Pembuatan sabun mandi padat transparan ini menggunakan bahan baku minyak kelapa, minyak jarak dan NaOH dengan penambahan kulit pisang ambon sebagai antioksidan. Tujuan dari penelitian ini agar dapat memanfaatkan limbah kulit pisang yang ada di lingkungan dan mempelajari pengaruh variasi jumlah etanol pada pembuatan sabun mandi transparan. Metode yang digunakan dalam pembuatan sabun mandi padat transparan pada penelitian ini yaitu menggunakan metode panas. Pada penelitian ini hasil yang didapatkan stabilitas busa tertinggi terjadi pada persentase kulit pisang ambon 50% dengan nilai 97%, dan derajat keasaman (pH) pada persentase kulit pisang ambon 20% dengan nilai 9,8. Uji organoleptik yang paling disukai oleh panelis adalah sabun transparan yang terbuat dari persentase kulit pisang ambon 20% dengan volume etanol 40 ml. Kesimpulan yang didapat dari hasil penelitian ini ialah semakin rendah persentase kulit pisang ambon yang digunakan, maka pH yang dihasilkan semakin tinggi begitu pula dengan stabilitas busa semakin tinggi persentase kulit pisang ambon yang digunakan maka stabilitas busa akan semakin baik.
Evaluación fisicoquímica de harina de col morada (Brassica oleracea var. capitata f. rubra) para usos alternos
Authors: Vázquez-García J.A. , Piloni-Martini J. , Quintero-Lira A. , Soto-Simental S. , Ocampo-López J.
Published: July 2023

La col morada (Brassica oleracea var. capitata f. rubra) es originaria de Europa y actualmente se produce con normalidad en la mayoría de los países europeos, principalmente en Francia e Italia, así como en África y en Asia. Es una hortaliza que se utiliza para su consumo en fresco o guisada en la elaboración de diversos platillos, además de ser ampliamente recomendada por su aporte nutrimental.  Su composición química es muy rica en agua teniendo alrededor de un 90%, es baja en carbohidratos y fibra con un 4 y 1% respectivamente, en cuanto a proteína aporta entre 2-3% y en lípidos presenta un bajo contenido, además sobresalen los compuestos bioactivos, en donde los antioxidantes hidrofílícos son responsables de más del 89 % de la capacidad antioxidante total. Estas características y propiedades nutrimentales la hacen objeto de interés para que pueda tener diferentes aplicaciones en una amplia variedad de productos, es por esto que el presente trabajo se interesó en aplicar un método de conservación por deshidratado obteniendo una harina, realizándole un análisis fisicoquímico para poder evaluar su composición posterior al tratamiento y considerar futuras aplicaciones.
Potencial nutricio y capacidad antioxidante de harinas de Ceratonia siliquia cultivada en Coahuila
Authors: Carrillo-Vargas L. , Caraveo Enríquez V. , Galván Calamaco Z. , Vargas González G , Ramírez Moreno A. , Guzmán Partida A.M. , Ramos Clamont Montfort G.
Published: July 2023

La algarroba o garrofa (Ceratonia siliqua), es una leguminosa (Fabaceae) originaria de la región del Mediterráneo cuya vaina tiene gran potencial para el desarrollo de alimentos funcionales. En América, los cultivos de esta planta son escasos. Para conocer el valor nutricio y capacidad antioxidante de C. silicua cultivada en Coahuila se prepararon harinas a partir de la vaina entera (HE) y de la pulpa de vaina (HP) practicándoles análisis proximal, contenido de Ca, K y Mg, contenido de fenoles, actividad antioxidante, color, espectroscopia de infrarrojo con transformada de Fourier (FTIR-ATR) y análisis microbiológico. Ambas harinas presentaron altos contenidos de fibra (³ 29.12 g/100g), con aportes importantes de Ca y K. El contenido de proteína fue de 5.67±0.72 y 3.84±1.2 para HE y HP respectivamente, con una leve evidencia de esta diferencia en los espectros FTIR-ATR. El color de ambas harinas fue marrón (L* » 58). Su contenido de fenoles fue relativamente alto (» 15mg/g de harina) inhibiendo el 50% del radical DPPH+. La calidad microbiológica de ambas harinas fue excelente después de ocho meses de almacenamiento. Los resultados confirman el potencial de estas harinas como ingrediente para alimentos funcionales.
Elaboración de una microencapsulación por gelación iónica a base de Kale (Brassica oleracea var. Sabellica)
Authors: Villanueva-Castañeda M. , Barrera-Molina A.I , Antúnez-Mojica M. , García-Solís S.E.
Published: July 2023

Las enfermedades crónicas no transmisibles (ECNT) son uno de los principales retos para el área de salud a nivel mundial, dichos padecimientos alteran la composición de la microbiota intestinal (MI) la cual es considerada un órgano metabólico que debe encontrarse idealmente en estado de eubiosis para promover un correcto estado de salud en el organismo humano. Como estrategia para estimular el alcance de dicho estado se recomienda el consumo de probióticos y prebióticos; una de las dificultades cuando se consumen es, qué, debido a condiciones que atraviesan en el tracto gastrointestinal se minimiza la cantidad tanto de prebióticos como de probióticos la que llega al punto de interes para ser efectivos, es por esa razón que, una opción para aumentar la efectividad de este tipo de productos se propone una microencapsulación por gelación iónica cuya barrera otorgue protección ante condiciones digestivas a la matriz que contenga el vegetal Kale (Brassica oleracea. var. Sabellica) el cual se estudia actualmente por su contenido de polifenoles y su potencial prebiótico. Se cree que el diseño de esta microcapsula bajo la tecnica de gelación iónica será útil para la elaboración posterior de un posible simbiotico.
Kanser Teşhis ve Tedavisinde Nano/mikromotor Teknolojisi
Authors: TÜRKER Ayşegül , BULBUL Y. Emre , ÖKSÜZ Ayşegül , YURDABAK KARACA Gözde
Published: July 2023

Nano/mikromotorlar, enerjiyi harekete dönüştürme kabiliyetine sahip nano veya mikro boyutta makinalardır. Bunlar; kimyasal yakıt ve harici etkenler neticesinde enerjiyi harekete dönüştürme prensibi ile çalışırlar. Bu harici etkenler; manyetik alan, elektrik alan, ultrason ve ışık gibi etkenler olabilir. Farklı tahrik mekanizmalarına sahip nano/mikromotorlar kanser ve bulaşıcı hastalıkların teşhis ve tedavisinde önemli rol oynarlar. Özellikle kanser tedavilerinde en çok tercih edilen yöntem olan kemoterapi ve radyoterapi gibi yöntemlerin insan sağlığı üzerindeki olumsuz etkileri, araştırmacıları nano/mikromotor çalışmalarına yönlendirmiştir. Nano/mikromotorlar; kanserleşmiş hücrenin erken teşhisini mümkün kılması ve geleneksel kanser tedavilerindeki yan etkilerin en aza indirilmesi gibi avantajlara sahiptir. Bu derlemede nano/miktomotorların sınıflandırılması ve sentez yöntemleri ele alınmakla birlikte, nano/mikromotorların kanser teşhis ve tedavisinde kullanımı açıklanmıştır.
Penggunaan Media Game Kahoot dalam Kalkulus I untuk Meningkatkan Minat dan Hasil Belajar Mahasiswa
Authors: Muhassanah Nur'aini , Aspriyani Riski , Mutia Mutia
Published: July 2023

The goal of this study is to use Kahoot Game media in learning to enhance student learning outcomes and engagement in Calculus I courses. The months of September through December 2022 were used for this study. This form of study was called Classroom Action Research and it was divided into two cycles, each of which included four stages: planning, action, observation, and reflection. This study focused on 12 first-semester mathematics majors who took Calculus I courses during the 2022–2023 school year. Observations, tests, and questionnaires were employed as the data gathering methods. The results of this study were 1) the class average score showed an improvement in scores on the pretest and posttest in each cycle, which increased the outcomes of learning attainment; 2) enhancing student learning motivation in Calculus I classes when the pre-cycle, cycle I, and cycle II average scores are used. The criteria for student interest in learning outcomes, which before the research, students were included in the criteria of good enough and good criteria, demonstrate this. Students were added to the good and very good criteria once the action was taken.
Analysis of Vitamine C Levels in Rice Snail Mucus (Pila ampullacea)
Authors: Septiani Nurul Ilma , Yuniarti Elsa , Helendra Helendra , Atifah Yusni
Published: July 2023

Rice snails are one of the pests that have the potential to cause high losses to rice plants. Rice snail mucus contains glycosaminoglycans, proteoglycans, glycoprotein enzymes, copper peptides, metal ions, collagen, elastin, glycolic acid, allantoin, antimicrobial peptides and vitamin C. Vitamin C or ascorbic acid is one of the vitamins needed by the body that functions as a help process in the body's metabolism. To determine vitamin C levels can be done using the UV-VIS spectrophotometry method with a wavelength of 260 nm. This study aims to determine vitamin C levels from rice snail mucus concentration of 100% and rice snail mucus concentration of 50%. This study is descriptive quantitative, analyzing vitamin C levels obtained from a spectrophotometer can be seen from the absorbance of rice snail mucus. Based on the results of research obtained from the analysis of vitamin C levels of rice snail mucus, the concentration of 100% is 2,372. While vitamin C levels in rice snail mucus concentration of 50% were obtained at 0.911. So it can be concluded that there are vitamin C levels in rice snail mucus with a concentration of 100% greater absorbance than 50% rice snail mucus.
Faktor-Faktor yang Mempengaruhi Kepuasan Pasien Badan Penyelenggara Jaminan Sosial pada RSUD Padang Pariaman
Authors: Eliza Yulina , Lina Edra , Irnovriadi Irnovriadi , Jasmalinda Jasmalinda
Published: July 2023

This study aims to determine the effect of competence, interpersonal communication and service quality on BPJS patient satisfaction at Padang Pariaman District Hospital. The method used in this research is quantitative research with a descriptive and associative approach. The population in this study were 8,462 patients who came during 2021. The sample used was 100 people using a purposive sampling technique. The data analysis technique uses multiple linear regression. The results of the study show that: (1) Competence has a positive and significant effect on BPJS patient satisfaction at Padang Pariaman District Hospital. (2) Interpersonal communication has a positive and significant effect on BPJS patient satisfaction at Padang Pariaman District Hospital. (3) Service quality has a positive and significant effect on patient satisfaction at the BPJS RSUD Padang Pariaman Regency. (4) Competence, interpersonal communication and quality of service simultaneously have a positive and significant effect on patient satisfaction at the BPJS RSUD Padang Pariaman Regency. The conclusion of the research results shows, the higher the competence, the higher patient satisfaction, conversely the lower the competence, the lower patient satisfaction. The better the interpersonal communication, the higher the patient satisfaction, conversely the worse the interpersonal communication, the lower the patient satisfaction. The higher the quality of service, the higher the patient satisfaction, conversely the lower the quality of service, the lower the patient satisfaction.