bluuebunny/crossref_metadata_2025 huggingface dataset:
Machine Learning-based Classifiers for the Prediction of Low Birth Weight
Authors: Arayeshgari Mahya , Najafi-Ghobadi Somayeh , Tarhsaz Hosein , Parami Sharareh , Tapak Leili
Published: February 2023

Objectives: Low birth weight (LBW) is a global concern associated with fetal and neonatal mortality as well as adverse consequences such as intellectual disability, impaired cognitive development, and chronic diseases in adulthood. Numerous factors contribute to LBW and vary based on the region. The main objectives of this study were to compare four machine learning classifiers in the prediction of LBW and to determine the most important factors related to this phenomenon in Hamadan, Iran.Methods: We carried out a retrospective cross-sectional study on a dataset collected from Fatemieh Hospital in 2017 that included 741 mother-newborn pairs and 13 potential factors. Decision tree, random forest, artificial neural network, support vector machine, and logistic regression (LR) methods were used to predict LBW, with five evaluation criteria utilized to compare performance.Results: Our findings revealed a 7% prevalence of LBW. The average accuracy of all models was 87% or higher. The LR method provided a sensitivity, specificity, positive likelihood ratio, negative likelihood ratio, and accuracy of 74%, 89%, 7.04%, 29%, and 88%, respectively. Using LR, gestational age, number of abortions, gravida, consanguinity, maternal age at delivery, and neonatal sex were determined to be the six most important variables associated with LBW.Conclusions: Our findings underscore the importance of facilitating timely diagnosis of causes of abortion, providing genetic counseling to consanguineous couples, and strengthening care before and during pregnancy (particularly for young mothers) to reduce LBW.
Digital Profiles of Work Processes of a Marine Engine for Calculated
Indicator Diagrams in Operating Modes Other than Maximum Continuous
Rating
Authors: Belousov Evgen , Marchenko Andrii , Rybalchenko Mykola , Tuluchenko Galina , Gritsuk Igor , Savchuk Volodymyr , Volodarets Mykyta
Published: February 2023

Obtaining and analyzing indicator diagrams are mandatory procedures stipulated by
the technical operating rules for most types of marine engines. For this purpose
a whole arsenal of mechanical and electronic indicating devices of periodic or
continuous action is created. Information on the results of engine indications
in bench tests are usually provided by the manufacturer in the form of bitmaps.
This complicates the process of using them as reference diagrams necessary for
comparison with real diagrams obtained during operation using electronic
diagnostic systems. Changes in approaches to logistics operations in maritime
transport have imposed a number of limitations, narrowing the use of indicator
methods. The tendency to reduce the commercial speed of ships makes it
impossible to take indicator diagrams on the specified modes of operation. As a
result, the effectiveness of using indicator diagrams for assessing the current
technical condition is drastically reduced. In this regard, there is an
objective need to harmonize various methods for obtaining and storing
information about the results of checking the technical condition of the engine
and bringing this information to a single presentation method that is convenient
for processing and analysis. It is also necessary to develop methods for
obtaining reference indicator diagrams for the entire range of operating modes
based on the processing of the results of bench tests of a particular engine.
The present study is devoted to solving these problems.
A numerical technique for solving variable order time fractional differential-integro equations
Authors: Derakhshan Mohammadhossein
Published: February 2023

In this manuscripts, we consider the coupled differential-integral equations including the variable-order Caputo fractional operator. To solve numerically these type of equations, we apply the shifted Jacobi-Gauss collocation scheme. Using this numerical method a system of algebraic equations is constructed. We solve this system with a recursive method in the nonlinear case and we solve it in linear case with algebraic formulas. Finally, for the high performance of the suggested method three Examples are illustrated.
Godement-Jacquet L-function, some conjectures and some consequences
Authors: Kaur Amrinder , Sankaranarayanan Ayyadurai
Published: February 2023

In this paper, we investigate the mean square estimate for the logarithmic derivative of the Godement--Jacquet $L$-function $L_f(s)$ assuming the Riemann hypothesis for $L_f(s)$ and Rudnick--Sarnak conjecture.
A note on Fourier eigenfunctions in four dimensions
Authors: Lautzenheiser Daniel
Published: February 2023

In this note, we exhibit a weakly holomorphic modular form for use in constructing a Fourier eigenfunction in four dimensions. Such auxiliary functions may be of use to the D4 checkerboard lattice and the four dimensional sphere packing problem.
The mixed mock modularity of a new $U$-type function related to the Andrews-Gordon identities
Authors: Borozenets Nikolay
Published: February 2023

In this paper we resolve a question by Bringmann, Lovejoy, and Rolen on a new vector-valued $U$-type function. We obtain an expression for a corresponding family of Hecke--Appell-type sums in terms of mixed mock modular forms; that is, we express the sum in terms of Appell functions and theta functions. This $U$-type function appears from considering the special polynomials related to generating functions for the partitions occurring in Gordon’s generalization of the Rogers--Ramanujan identities.
Ramanujan's Quarterly Reports
Authors: Berndt Bruce C
Published: February 2023

This is a faithful reproduction of Ramanujan's Quarterly Reports from a handwritten copy by T.A. Satagopan in 1925.
Joseph N. Straus. The Art of Post-Tonal Analysis: Thirty-Three Graphic Music Analyses (review)
Authors: McGartland Aidan
Published: February 2023

Joseph Straus’s The Art of Post-Tonal Analysis is the apotheosis of his decades-long work in post-tonal theory, and serves as an apt analytical companion to his seminal textbook, Introduction to Post-Tonal Theory (4th ed. 2016). Straus displays his mastery of post-tonal analytical artistry throughout. The monograph consists of thirty-three graphic music analyses intuitively laid out, with a pioneering use of colour for further clarity, and complete with a slick video version of each analysis on the companion website. The aim of each analysis is to uncover the structure and form of the music, with an emphasis on pitch organisation, whilst remaining largely free from overarching contextual or theoretical arguments. […]
Peter Urquhart. Sound and Sense in Franco-Flemish Music of the Renaissance: Sharps, Flats and the Problem of Musica Ficta (review)
Authors: Daly Tim
Published: February 2023

Renaissance vocal music has an editorial problem. Performers and editors of pre-Baroque repertoire are unable simply to realise the music on the page but instead must decide whether the notation means what it says it means: manuscripts require interpretation. This obligation arises from the widely accepted idea that the surviving compositions were not chromatically precise and that certain types of inflection—what today we would call accidentals—were omitted in writing but applied in performance. There are several well-known ‘rules’ that govern the creation of these inflections,1 but this is where the consensus ends. Every scholar’s particular application of these rules is slightly different, and consequently, no two recordingsof a Josquin mass or a Mouton motet sound identical. As Peter Urquhart observes in his weighty contribution to the topic, even the term used to describe these problems, musica ficta, is ambiguous. […]
Tensile and flexural properties of polyester composites reinforced by iron filings
Authors:   Obafemi Awolowo University, Ile-Ife, Nigeria, Ogundiji Oluwafemi Emmanuel , Oyatogun Grace Modupe
Published: February 2023

The effects of iron filings on the tensile and flexural properties of unsaturated polyester reinforced by iron filings have been studied. Particulate polyester composite reinforced by iron filings of different wt. % were synthesised and characterised. The mass percentage of the iron filings, varied from 0, 5, 10, 15, 20, 25 to 30 % were added to unsaturated polyester resin with 2 grams of methyl ethyl ketone peroxide catalyst and 0.5 grams of cobalt naphthalene accelerator to synthesise the composites. Tensile and flexural tests were carried out on the samples. The metallographic study was carried out using an optical microscope and scanning electron microscope. Results showed that tensile properties, including energy absorbed at fracture, percentage elongation, and tensile strength of the composite improved with increasing wt. % of filing particles up to 15 wt. %. This trend was also observed in the flexural strength results. The sample with 15 wt. % iron filings was observed to have the optimum reinforcement effect with a tensile strength of 34.91 MPa, a flexural strength of 111.06 MPa, and a modulus of elasticity of 1581.29 MPa.
Kontroverzní Jungkův bestseller Jasnější než tisíc sluncí a nacistický uranový výzkum
Authors: Grygar Filip
Published: February 2023

The essay deals with Nazi uranium research in the context of Jungkʼs bestseller Brighter Than a Thousand Suns (1956). The first part of the article introduces the reader to Jungk himself, as well as to the historical-political context that crucially influenced his moralising positions in favour of the German uranium scientists (they did not build nuclear weapons for Hitler) and at the same time against the Allied scientists (they built nuclear weapons and used them). Based on historical sources (gradually made available since the 1970s), the second part of the study discusses the Nazi Uranium Clubʼs efforts to produce a uranium reactor and nuclear weapons. German scientists worked for the Nazi regime voluntarily and intensively and were fascinated by the research. The third part reveals the origins of the post-war legend of the supposedly innocent German scientists, their decades-long alibism, and the criticism of Jungkʼs bestseller by the Allied command, the scientists, and eventually Jungk himself, who put faith in the interviews in which German scientsts proclaimed their activities had been nothing but peaceful.
Editorial
Authors: Estudios Ambientales Equipo Editorial Revista
Published: February 2023

Estimados colegas y lectores: la Revista  Estudios  Ambientales (REA) agradece las contribuciones del presente número  e  invita  a  quienes  deseen  publicar sus artículos  y  comunicaciones  nos  las  envíen sus trabajos a  través  del  mail  de contacto o desde la plataforma OJS de la revista.

Aprovechamos el espacio para saludarlos por acompañarnos en este año y desearles un muy buen 2023. Para REA el 2023 es un año especial, ya que cumpliremos 10 años de continuidad ininterrumpida, de crecimiento en la publicación de trabajos, cantidad de lectores y evaluadores, y de internacionalización de las contribuciones así como una presencia creciente en catálogos de revistas científicas y acreditaciones en indexaciones tanto de habla hispana como internacionales.

Para esta edición hemos migrado la revista a una versión OJS más moderna que solucionó los inconvenientes de incompatibilidad con el sistema DOI. También se ha incorporado una sección denominada Fotos de tapa que permite difundir el trabajo grafico de profesionales y amateur de la fotografía que desean evidenciar problemáticas ambientales o destacar paisajes y recursos ambientales por su importancia de conservación. Esta sección está abierta siempre y las fotos serán siendo publicadas en función de criterios de selección que están disponibles en la plataforma de REA, disponible en:  https://ojs2.fch.unicen.edu.ar/ojs-3.1.0/index.php/estudios-ambientales/announcement/view/11

El segundo número 2022 se publica 7 trabajos. Se trata de contribuciones actuales y de interés en la agenda ambiental internacional. Las propuestas abordan diferentes temas de actualidad en la gestión ambiental y aplican diversidad de técnicas para la producción de nuevo conocimiento en relación al estudio de áreas de conservación, la gestión de cuencas hidrográficas, el uso del conocimiento tradicional y las mediciones de eficiencia ecológica en procesos productivos asociados a la producción de energías renovables.

Aprovechamos a felicitar a autores, evaluadores y equipo editorial por garantizar la continuidad de la revista en un contexto como el que atravesamos en 2020 y 2021. Esperamos que colegas y lectores den otorguen relevancia a las producciones del presente número.

Invitamos a dar a conocer la revista entre colegas y Los saludamos muy cordialmente.
Nuclear Fission or Fusion on Meeting Electricity Demand of Future Energy Source Economy and Policy
Authors:   Department of Physics, K. N. Toosi University of Technology, Tehran, Iran, Zadfathollah Rahele , Zohuri Bahman ,   Galaxy Advanced Engineering, Albuquerque, New Mexico, 87111, United States of America, Chief Executive Officer
Published: February 2023

The announcement of the United States Department of Energy (DOE) on Tuesday, December 13, 2022 was a monumental milestone in nuclear Fusion research, where a “net energy gain driven by Inertia Fusion Confinement (ICF)” eventually, after almost 40 years of scientific efforts achieved for the first time in history by scientists from the Lawrence Livermore National Laboratory (LLNL) in California through its National Ignition Factify (NIF) program. For a long time since aftermath of “Manhattan Project”, scientists knew and had some clear concept of bringing sun energy to earth by means of “Fusion” process either via Magnetic Fusion Confinement (MFC)or ICF after their success of exploding their nuclear fission bomb through Nevada Test Site (NTS) via “Fission” process. Announcement of such an achievement by simply put it is one of the most impressive scientific feats of the 21st century as “Jennifer Granholm, secretary of U.S. Department of Energy said at a press conference. Such success puts production of electricity from nuclear energy of fusion puts it in different perspectives and it shows that researchers have been working on this for decades alongside of MCF and their efforts behind nuclear fission of Generation - IV (GEN-IV) reactors technology and manufacturing. In this short review paper, we describe all these issues of the differences between Fission and Fusion and each aspect of them being source of generating electricity to meet national and global demand for the source of it from nuclear point of view and not going to detail of renewable source of energy at this point.
ECONOMIC SIGNIFICANCE OF THE ORGANIZATION AND CLASSIFICATION OF COST ACCOUNTING
Authors: Rasulova Shakhnoza
Published: February 2023

The article will consider options for classifying the costs of an enterprise, consider the importance of grouping types of costs by individual characteristics, consider the importance of classification. The purpose of the study is to determine the most optimal of the cost classification options as a goal. For this purpose, the methods of conducting research analysis in the works of well-known scientists and economists were used. The author made proposals on the classification of innovation costs aimed at creating products and improving the quality of products.
WAYS TO INCREASE THE COMPETITIVENESS OF PERSONNEL TRAINED IN AGRARIAN HIGHER EDUCATION INSTITUTIONS IN THE LABOR MARKET
Authors: Boltaev Nurali
Published: February 2023

Proposals and recommendations have been developed on the mechanisms and benefits of introducing a student state in employer organizations in order to increase the competence of students in the system of agricultural education and increase their competitiveness in the labor market, ensure student employment, and apply the knowledge and skills gained in the learning process.
THE ROLE OF NATIONAL AND RELIGIOUS TOLERANCE IN ENSURING YOUTH MORAL SECURITY
Authors: Aripov Alisher
Published: February 2023

The role of national and religious tolerance in ensuring the moral security of young people and the mechanisms of its provision are scientifically studied in the article. At the same time, to increase the qualities of national and religious tolerance among young people, to cultivate feelings of tolerance, to further strengthen education and moral, religious and ideological propaganda among young people, and in this process to increase the role of self-government bodies, civil society institutions, youth-social institutions-society continuous maintenance of society's stability based on the formation of a system of relations is highlighted.
THE STAGES OF SHARIATA, TARIQATA, ENLIGHTENMENT, ISTANY AND LEARNING SUFISM
Authors: Sattorov Khabib
Published: February 2023

In this article, Sufism sheikhs and their students encouraged people who followed the path of Sufi not to taste either the world or the hereafter, and not to cross the path of lust. We can say that Sufism is a philosophical teaching about the spirituality, spirit, needs and attitude of those who consider it their main duty and goal to educate people with good manners, pure heart and soul, and high knowledge, i.e. perfect people.
SPECIFIC ASPECTS OF THE TRANSFORMATION OF CULTURAL PROCESSES
Authors: Safarov Ulugbek
Published: February 2023

This leads to a change, transformation of cultural processes in a globalizing world. In the process of transformation, the worldview, consciousness, thinking, and attitude of young people to life have been radically updated, this is not an exaggeration. But this is the urgent task of the day - to find an answer to the question of what these changes are, what is the important factor and the specifics of the "new" views that we emphasize.
HISTORICAL STAGES AND FEATURES OF THE TERMS OF IRRIGATION AND MELORATION IN THE UZBEK LANGUAGE
Authors: Nazarova Sayyora
Published: February 2023

Тhis article contains information on the formation, development, development and composition of the terms of irrigation in the Uzbek language. And also includes their archaeological, ethnographic, paleoan-thropological, as well as linguistic data.
ROLE OF RESEARCH ACTIVITIES R. KH. SULEYMANOV IN THE DEVELOPMENT OF PALEOLITHOLOGY
Authors: Makhmudova Azizakhon
Published: February 2023

This article describes the development of systematic scientific research in the archeology of the Stone Age in Uzbekistan. The stages and factors of development, existing problems and shortcomings, as well as their causes are analyzed. Particular attention is paid to the importance of R. Kh. Suleymanov's research.
LEXICAL-SEMANTIC TRANSFORMATION OF PHRASEOLOGICAL UNITS IN PRINTED MEDIA
Authors: Isroilova Manzura
Published: February 2023

Phraseology is a rapidly developing branch of linguistics, and researchers' interest in studying the semantic and communicative properties of phraseological units and their functions remains unchanged. Phraseological units are indispensable for their informativeness and expressiveness, so they occupy a special place in various texts.
FACTORS AFFECTING THE DEVELOPMENT OF HUMAN CAPITAL
Authors: Asamxodjaeva Shoira
Published: February 2023

The article examines the essence of investing in human capital and factors affecting the formation and development of human capital, as well as their composition. The directions of development of human capital through the education system are presented, which is one of the main factors.
USE OF BANK GUARANTEE AND RESERVE LETTER OF CREDIT IN TRADE FINANCING IN COMMERCIAL BANKS
Authors: Elboev Bobur
Published: February 2023

This article discusses the features of a bank guarantee and a letter of credit, some aspects of settlements under a bank guarantee and a letter of credit in the provision of trade finance services by commercial banks.
Discrete or not so discrete: long distance movements by coastal bottlenose dolphins in UK and Irish waters
Authors: Robinson Kevin P. , O'Brien Joanne M. , Berrow Simon D. , Cheney Barbara , Costa Marina , Eisfeld Sonja M. , Haberlin Damien , Mandleberg Laura , O'Donovan Mairead , Oudejans Machiel G. , Ryan Conor , Stevick Peter T. , Thompson Paul M. , Whooley Padraig
Published: February 2023

The potential for long distance movements in common bottlenose dolphins (Tursiops truncatus) from six UK and Irish study sites was examined using photographs of natural markings. Here we provide the first evidence for long-term re-sightings between the Moray Firth, Inner Hebrides and across international borders to the Republic of Ireland as determined for eight individuals over a ten year period from 2001 to 2010. Minimum dispersal distances of up to 1,277km were resolved providing a new distance record for the species in European waters. Although none of the sightings were made within protected areas, several were made in waters used by animals from a Special Area of Conservation (SAC) revealing some evidence for connectivity between areas previously regarded as discrete. Our findings highlight the need to mitigate broader-scale anthropogenic impacts affecting these dolphins across multiple sites throughout their coastal range. Accordingly, we underline the importance of developing wider conservation measures for this species in UK and Irish waters, but particularly in prospective corridor areas potentially linking designated SACs in the Moray Firth, Cardigan Bay and Shannon Estuary.
The role of ancient palaces in activating tourism within urban settings in Algeria - Case study of Qasr Al-Shalala Tiaret
Authors: Farida Saci
Published: February 2023

Some of the ancient Algerian cities represent purely historical landmarks that highlight the historical backgrounds of successive civilizations, and with the observed variation in the climatic zones that resulted in the emergence of desert palaces, and are a living example of human adaptation and adaptation to the peculiarities of the region in which they grew up, The palaces are a cultural heritage that reflects the effects of past generations and an urban heritage that expresses to a large degree the specificity that distinguishes the population from the interdependence, values and customs, among these palaces is Al-Shalala Dhahrania. Palace as a stand-alone example through the episodes of history, which represents the first nucleus of its development and emergence. However, what is noticeable about this urban pattern is that it is witnessing great deterioration and neglect due to many changes, some of which are climatic and some of which are due to the random intervention of humans, which in turn affected the specificities of the region.
Islamic urban heritage in Constantine - challenges and prospects
Authors: Khalfallah Boudjemaa , Derbal Kaddour
Published: February 2023

Scientific research on heritage is many and varied , because it represents a collective historical and cultural repository that expresses essentially identity. Among the areas of heritage, we distinguish the urban and architectural heritage that reflects the true identity and the civilizational dimension, which today the process of preserving it has become a historical responsibility and a national and national duty that stops specialists in all parts of the world. In light of the growing interest in the concept of sustainable development in various fields, the care of heritage in its comprehensiveness emerges as one of the major axes of this development, and an area that falls within the framework of a comprehensive policy to preserve the diverse world heritage. There is no doubt that the general problem with regard to ancient urban tissues lies in their ability to respond to the modern requirements of architectural urban development and provide an environment in which the balance between man and his surroundings is not disturbed, and to preserve the prevailing social and human dimensions, and to overcome purely economic approaches in comparing modern projects and conservation projects. In this context, we have the right to ask whether it is possible to protect and breathe life into heritage urban tissues, without this being an attempt at temporary revival. Is it possible to achieve sustainable urbanization in light of the predominance market rules?
 This research mainly aims to visualize an urban project that aims to achieve two basic things:
- Protecting the Arab-Islamic architectural and urban identity of the city of Constantine, the capital of eastern Algeria, which has been subjected to cultural obliteration and attempts at Westernization over more than a century of French colonialism.
- Adopting a practical methodology during the course of the approach
Green Accounting Based Tabligh at Sugar Factory in Indonesia
Authors: Hanafie Hadriana , Utari Emy , Manrimawagau Bayan Andi Yustika , Abdullah Muhammad Wahyuddin
Published: February 2023

The purpose of this research is to determine the reporting of environmental costs as green accounting based tabligh that applied to sugar factories. This research is a qualitative research using an interpretive phenomenological approach. The source of data in this study is primary data obtained from informants and secondary data using other literature. This research was conducted at PT Perkebunan Nusantara XIV is a sugar factory located in Pa'rappunganta Village, North Podbangkeng district, Takalar Regency, Indonesia. The data analysis techniques used in this study are data reduction, data presentation and drawing conclusions/verification. The results of this study show that PTPN XIV Takalar Sugar Factory has incurred environmental costs. However, these costs have not been grouped by category, but are only grouped in one cost post on the annual financial statement, namely waste prevention costs. This sugar factory has not fully met the cost elements of environmental cost reporting and sustainable reporting.
Investigating Male and Female Teachers' Perceptions of Character Education in High school Islamic Studies Curricula in Saudi Arabia
Authors: Alwadai Mesfer Ahmed Mesfer , Alhaj Ali Albashir Mohammed
Published: February 2023

The present study scrutinizes the perception of male and female Teachers of character education in high school Islamic studies curricula. The main objectives of the present study are to explore the Islamic studies high school male and female teachers' perceptions of character education in Islamic studies textbooks and analyze Islamic studies high school male and female teachers' opinions on character education and how can be gained through the content of the curricula. The study's central question is what are the Islamic studies high school male and female teachers' perceptions of character education in Islamic studies textbooks?The results of this study are expected to fill the dearth of knowledge about how male and female teachers perceive character education in high school Islamic studies curricula in Arabs contexts in general and in  Saudi high school contexts in particular. High school Islamic studies male and female teachers' perceptions of character education in high school Islamic studies curricula were scrutinized by using a five Likert-type questionnaire of twenty items which were assayed quantitatively utilizing descriptive data. The participants of the study were a hundred high school Islamic studies male and female teachers in the Asir region. The foremost results of the investigation indicated that responses of high school Islamic studies male and female teachers to the statements in the questionnaire were positive. The study revealed that the use of character education in high school Islamic studies curricula is beneficial. Based on the findings, the study recommended exploring the role of character education in other textbooks on social studies, languages, and the like.
Dynamics Of Public Service Implementation Before, During And Post Pandemi Covid-19 In Palu City
Authors: Rahman Arif , Syamsidar Syamsidar , Royfandi Moh.
Published: February 2023

This study aims to reveal phenomena related to public services in Palu City before, during and after the Covid-19 pandemic. This type of research is qualitative with a descriptive approach. As for the collection technique through library data, reading, processing, and recording research materials. The results of the study show that the three aspects of research, namely responsiveness, responsibility and accountability, still pose various problems in the process of public service. First, the slow response of the bureaucracy in receiving complaints, wishes, community needs in public services so that it has an impact on the community itself. Second, that public services are carried out not in accordance with existing norms, wherein Law No. 25 of 2009 concerning public services explains that the State must be active to participate in the social life of society, to provide whatever is best for the people, especially in service. Third, where all the interests of society are always contrary to the interests of the bureaucracy in the administration of public services. For example, the services that are carried out must be completed as quickly as possible according to the applicable mechanism, but the results of the research show that the services carried out are not in accordance with the norms and desires of the community.
The sustainable development of tourism industry in Fujian Province under the impact of the Covid-19
Authors: Chen Bolun , Bi Chuanchen
Published: February 2023

Under the normalization of the prevention of the new crown epidemic, the cultural tourism industry has been severely impacted, causing the entire tourism industry to press the pause button and unable to develop normally. The vision is to better adjust the existing problems, collect and summarize information from various places through the second-hand data collection method, make comparisons, and then combine the local characteristics of Fujian Province with the situation to help the sustainable development of the local tourism industry in Fujian Province.
Exploring The Feasibility Of Residential Solar Panel Adoption In Algeria’s Arid And Hot Regions: A Cost-Benefit Analysis Of An On-Grid System
Authors: Tibermacine Islam , Zemmouri Nourredine
Published: February 2023

This research aims to explore the economic and technical feasibility of residential solar panel adoption in Algeria, specifically in its arid and hot regions. By analyzing the potential for solar energy generation and assessing the economic viability of solar panel systems, this study aims to evaluate the financial impact on energy bill savings and the economic feasibility of solar panel adoption. A case study of a residential building located in the city of Biskra is used as a representation of the potential for solar energy in these specific areas, along with real data of energy consumption over the last five years. A simulation of an on-grid system using Skelion plugin and PVsyst software was performed to evaluate the financial impact on energy bill savings. The study also evaluated the economic feasibility through the calculation of costs and benefits, including the payback period, net present value (NPV), and the internal rate of return (IRR). Results showed that solar energy has great potential in Algeria and that residential solar panel systems can provide a positive net present value and internal rate of return, indicating that they are economically viable. Additionally, the payback period for these systems was found to be reasonable. Homeowners who install solar panels on their roof can reduce their dependence on the traditional electricity grid by generating their own electricity, which can lead to significant savings on energy bills and reduce their carbon footprint.
GIS and remote sensing – desertification and progression of silting-up in the high plains of Oran in Western Algeria
Authors: Boukholkhal Khadidja , Remaoun Khadidja , Suiah Sid Ahmed
Published: February 2023

The expansion of silting in the Algerian High Plains of south Oran (northwestern Algeria) is the ultimate manifestation of desertification. The presence, accumulation or deposition of sands in areas that previously did not contain any is the most visible sign of this silting up phenomenon that has begun to appear in recent decades. The present study focuses on the evolution and progression of silting up in the region under study. It is worth noting that assessing the narrowing of the vast endorheic depressions in this area is a very complicated task due to the vastness of the place. In order to deal with this problem in an efficient manner, it was deemed necessary to use remote sensing as it offers possibilities of global vision of the area to be studied and allows a precise description in time and space of this region. In order to efficiently identify and apprehend the phenomenon mentioned above, it was decided to adopt an analysis methodology that is based on the processing and interpretation of multi-date satellite images, combined with exogenous data. It should be noted that the topographic maps of Mecheria and Ain Sefra are given at a scale of 1/200,000 and are supplemented by some field data, along with some wind data. The analysis of data brought from different sources has made it possible to locate, characterize and map the evolution and the spatio-temporal dynamics of the recent extension of sandy accumulations, old Quaternary dune belts, and shrinking of vast endorheic depressions (Chott El Gharbi and Sebkhat Nâama). It is widely acknowledged that areas that are most affected by the progression of silting are the Plain of Naama, that is surrounded by the first Saharan Atlas ranges and by the orographic corridor formed by the double SW/NE alignment of Djebel (Mount) Morhad, Djebel Suigua, Djebel Aissa and Djebel Mekter located south of Ain Sefra. It is important to note that all this information, which is extracted from satellite images and exogenous data, will be integrated into a GIS.
Feasibility of Developing Creative Mathematics Learning Media Augmented Reality Building Materials
Authors: Sukriadi Sukriadi , Kusdar Kusdar , Djangka La , Muhlis Muhlis , Febiola Dyna , Agus Salim Nur
Published: February 2023

This study aims to determine the feasibility of Augmented Reality Creative Mathematics learning media for geometric materials in elementary schools. The development of Augmented Reality Creative Mathematics learning media uses research and development methods or Research & Development, which produces a three-dimensional learning media using Augmented Reality technology in the Assemblr Edu application. This research and development use the ADDIE development model, which includes 5 development steps, namely: 1) analysis, namely needs analysis; 2) design, namely design or planning; 3) development, namely development; 4) implementation, namely implementation and 5) evaluation, namely evaluation. Based on the feasibility test results, it can be concluded that the Augmented Reality Creative Mathematics media is suitable for use as a learning medium for geometric materials in class V SDIT Istiqamah Balikpapan.
ANALISIS RHODAMIN-B PADA LIP CREAM YANG BEREDAR DI APLIKASI BELANJA ONLINE SECARA KROMATOGRAFI CAIR KINERJA TINGGI
Authors: Fauziah Rofi'atul , Hariningsih Yetti , Maritha Vevi
Published: February 2023

Lip cream adalah salah satu jenis lipstik yang memiliki karakteristik liquid dan diaplikasikan pada bibir untuk menentukan bentuk dan memberi warna serta perlindungan terhadap lingkungan sekitar bibir. Rhodamin-B adalah zat warna sintetis yang memiliki bentuk serbuk kristal, tidak berbau, berwarna merah keunguan. Tujuan dari penelitian ini untuk mengetahi panjang gelombang maksimal dari Rhodamin-B, kondisi optimum metode analisis Rhodamin-B secara Kromatografi Cair Kinerja Tinggi serta mengetahui kadar Rhodamin-B pada sampel lip cream yang beredar di aplikasi belanja online. Penelitian ini dilakukan di Laboratorium Kimia Terpadu STIKES Bhakti Husada Mulia Madiun. Penelitian ini menggunakan 3 sampel lip cream yang dijual di aplikasi belanja online. Penentuan panjang gelombang maksimal dilakukan pada rentang panjang gelombang 400-800 nm. Penetuan kondisi optimum dilakuakan pada panjang gelombang maksimal terpilih, fase diam kolom C18, panjang kolom 250 mm, ukuran partikel 5 μm, detektor visible, laju alir 1 ml/menit, volume injeksi 20 μL, dan komposisi fase gerak menggunakan methanol: air: asetonitril. Sampel lip cream di ekstraksi selama 2 jam, kemudian di saring dan di injeksikan pada kolom KCKT.  Hasil penelitan penentuan Panjang gelombang maksimal Rhodamin-B adalah 554 nm, kondisi optimum KCKT untuk analisis Rhodamin-B laju alir 1 ml/menit, volume injeksi 20 μL, panjang gelombang 554 nm dengan fase gerak methanol: asetonitril: air (47:47:6), fase diam kolom C18, suhu 25 oC, serta memenuhi syarat kesesuaian sistem. Kandungan Rhodamin-B yang terdapat pada sampel lip creambuntuk sampel A sebesar 2,023 ± 0,1880, sampel B sebesar 1,100 mg/L ± 0,0177 dan sampel C sebesar 5,101 mg/L ± 0,531.

 

Kata kunci: Rhodamin-B, lip cream, Kromatografi Cair Kinerja Tinggi (KCKT)
AKTIVITAS ANTIBAKTERI EKSTRAK DAN FRAKSI DAUN ALPUKAT (Persea americana Mill.) TERHADAP BAKTERI Lactobacillus acidophillus
Authors: Yuliana Dian , Hariningsih Yetti , Waskita Kuncara Nata
Published: February 2023

Lactobacillus acidophillus merupakan bakteri gram positif dalam rongga mulut penyebab karies gigi. Salah satu pilihan terapi yaitu menggunakan antibiotik namun dapat menimbulkan resistensi sehingga diperlukan alternatif lain dengan memanfaatkan tanaman sebagai antibakteri seperti daun alpukat. Penelitian ini bertujuan untuk mengetahui aktivitas antibakteri ekstrak etanol dan fraksi daun alpukat dengan konsentrasi  25%, 50% dan 100% terhadap bakteri Lactobacillus acidophillus. Ekstraksi menggunakan metode maserasi dengan pelarut etanol 96% dan fraksinasi cair-cair menggunakan pelarut n-heksan. Uji aktivitas antibakteri dilakukan secara in vitro dengan metode difusi cakram disk dan membandingkan zona hambat yang terbentuk dari masing-masing perlakuan dengan kontrol positif yaitu Klindamisin dan kontrol negatif yaitu DMSO 10%. Hasil penelitian menunjukkan ekstrak etanol dan fraksi daun alpukat memiliki respon hambatan yang kuat, kontrol positif sangat kuat dan kontrol negatif lemah. Berdasarkan Uji One Way Anova, ekstrak etanol dan fraksi daun apukat menunjukkan adanya perbedaan yang bermakna dari masing-masing perlakuan dengan nilai signifikasi (p=<0,05). Kesimpulan dari penelitian ini adalah ekstrak etanol dapat menghambat pertumbuhan bakteri Lactobacillus acidophillus pada konsentrasi 100% dengan rata-rata 16,91±0,15mm, fraksi etanol 13,56±0,38mm dan fraksi n-heksan 12,39±0,30mm. Ekstrak etanol memberikan daya hambat paling baik dengan rata-rata 16,91±0,15mm.

 

Kata Kunci: Aktivitas Antibakteri, Daya Hambat, Ekstrak Etanol Daun Alpukat, Fraksi Daun Alpukat, Lactobacillus acidophillus.
AKTIVITAS ANTIBAKTERI EKSTRAK ETANOL SELEDRI (Apium graveolens L) TERHADAP PERTUMBUHAN BAKTERI Actinomyces sp. dan Lactobacillus acidophilus
Authors: Lianah Widriyatul , Ayuwardani Novi , Hariningsih Yetti
Published: February 2023

Bakteri Actinomyces sp. dan Lactobacillus acidophilus merupakan bakteri yang paling dominan di saluran akar gigi dan dalam rongga mulut serta sangat berperan dalam terjadinya karies gigi. Pencegahan karies gigi menggunakan obat kumur dengan zat aktif Chlorhexidine dalam jangka panjang tidak dianjurkan karena efek samping yang sangat merugikan sehingga diperlukan alternatif dari bahan alam yang berpotensi antibakteri yaitu seledri. Penelitian ini bertujuan untuk mengetahui aktivitas antibakteri dan Konsentrasi Hambat Minimum (KHM) ekstrak etanol seledri pada konsentrasi 12,5%; 25%; 50%;100% terhadap bakteri Actinomyces sp dan Lactobacillus acidophilus. Ekstraksi menggunakan metode maserasi dengan pelarut etanol 96%. Uji aktivitas antibakteri dilakukan secara in vitro dengan metode difusi cakram disk serta membandingkan zona hambat yang terbentuk dari masing-masing perlakuan dengan kontrol positif obat kumur “Minosep”. Hasil menunjukkan ekstrak etanol seledri memiliki respon hambatan kategori kuat terhadap bakteri Actinomyces sp dan Lactobacillus acidophilus. Uji One way Anova menunjukan adanya perbedaan yang signifikan dari masing-masing perlakuan yang dibuktikan dengan nilai (p=0,000). Kesimpulan dari penelitian ini adalah ekstrak etanol seledri memiliki aktivitas antibakteri terhadap Actinomyces sp dan Lactobacillus acidophilus dengan Konsentrasi Hambat Minimum (KHM) masing-masing 12,5% dengan rata-rata zona hambat 10,21 mm dan 10,79 mm.

Kata Kunci : Aktivitas antibakteri, ekstrak etanol herba seledri, Actinomyces sp, Lactobacillus acidophilus,daya hambat.
ANALISIS EFEKTIVITAS BIAYA TERAPI ANTIHIPERTENSI PADA PASIEN HIPERTENSI DENGAN PENYAKIT PENYERTA DIABETES MELITUS TIPE 2 RAWAT INAP DI RSUD KOTA MADIUN
Authors: Tyas Ajeng Setyaning , Raising Rahmawati , Ratnawati Riska
Published: February 2023

Hipertensi merupakan peningkatan tekanan darah secara kronik. Pembiayaan kesehatan di Indonesia semakin meningkat, maka perlu analisis efektivitas biaya untuk memutuskan pemilihan obat yang efektif secara manfaat dan biaya. Penelitian ini bertujuan untuk mengetahui antihipertensi yang paling cost-effective di RSUD Kota Madiun. Penelitian dilakukan secara retrospektif terhadap rekam medik pasien. Aspek pengambilan data meliputi data terapi dan biaya pengobatan. Data yang diperoleh diolah dengan analisis descriptive. Efektivitas pengobatan diukur berdasarkan penurunan tekanan darah sistolik dan diastolik yang mencapai target, sedangkan efektivitas biaya dilihat berdasarkan nilai ACER dan ICER.Hasil penelitian menunjukkan persentase efektivitas terapi obat  A (ACEI dan CCB) sebesar 98% sedangkan obat B (ARB dan CCB) sebesar 90%. Rata-rata total biaya antihipertensi obat A (ACEI dan CCB) sebesar Rp.3.738.972,22 dan obat B (ARB dan CCB) sebesar Rp.4.170.392,72. Kelompok obat A (ACEI dan CCB) lebih cost-effective dengan nilai ACER sebesar Rp.38.152,77 dibandingkan obat B (ARB dan CCB) sebesar Rp.46.337,68 pada pasien hipertensi rawat inap di RSUD Kota Madiun. Kesimpulan dari penelitian ini yaitu kelompok terapi A (ACEI dan CCB) memiliki efktivitas terapi yang tinggi dengan biaya lebih rendah. Harapannya rumah sakit dapat mempertahankan anggaran obat untuk penyakit hipertensi secara efektif dan efisien.

 

Kata Kunci : Hipertensi, Efektivitas Biaya, Antihipertensi Kombinasi
Gambaran Angka Lempeng Total Bakteri Pada Blemish Balm Cream Lokal Yang Beredar Di Kota Samarinda
Authors: Rosihan Virjinia Dela Audita , Harlita Tiara Dini , Azahra Sresta
Published: February 2023

Kosmetik adalah kebutuhan sandang yang dianggap penting bagi sebagian masyarakat. Salah satunya ialah Blemish Balm Cream. BB Cream adalah kosmetik dekoratif yang mengandung bahan antioksidan dan tabir surya yang dipakai dalam jangka waktu lama dan akan ada peluang terjadinya kontaminasi bahkan akan semakin meningkat seiring dengan lamanya pemakaian. Penelitian ini bertujuan untuk mengetahui angka lempeng total bakteri Blemish Balm Cream lokal yang beredar di Kota Samarinda. Jenis penelitian yang digunakan adalah deskriptif dengan metode pemeriksaan Angka Lempeng Total (ALT). Analisis data penelitian menggunakan analisis univariate, sampel penelitian adalah 10 BB Cream merk lokal yang berada di Kota Samarinda dengan teknik sampling yaitu Total Sampling. Setiap 1 sampel ditimbang 10 gr dan dilakukan pemeriksaan angka lempeng total dengan pengenceran 101 sampai 104, sehingga setiap 1 sampel dilakukan 4 kali percobaan maka didapatkan 40 kali unit percobaan. Hasil penelitian didapatkan 80% sampel terkontaminasi bakteri dengan rata-rata ALT 1,0 × 102 CFU/mL. ALT tertinggi terdapat pada sampel BB01 yaitu 3,9 × 102 CFU/mL dan ALT terendah terdapat pada sampel BB10 yaitu 1,0 × 101 CFU/mL. Kesimpulan penelitian ini didapatkan 10 sampel (100%) memenuhi syarat yang telah ditetapkan oleh BPOM No. 12 Tahun 2019 dengan standar angka lempeng total < 103 koloni/mL.
UJI AKTIVITAS ANTIOKSIDAN EKSTRAK ETANOL JANTUNG PISANG NANGKA, AMBON, DAN TANDUK (Musa Paradisiaca sp.) MENGGUNAKAN METODE DPPH (1,1-difenil-2-pikrilhidrazil)
Authors: Abdul Ahwan , Jannah Roudlotul , Qonitah Fadilah
Published: February 2023

Penyakit degeneratif dapat disebabkan oleh radikal bebas, namun dapat dilawan secara alami oleh tubuh dengan antioksidan. Natural antioxidant dapat diperoleh dari tumbuhan, buah-buahan dan biji-bijian seperti pada jantung buah pisang. Jantung buah pisang yang memiliki kandungan senyawa fenolik, berpotensi memiliki aktivitas antioksidan. Tujuan dari penelitian adalah untuk mengetahui aktivitas antioksidan jantung pisang nangka, ambon dan tanduk, serta untuk mengetahui perbedaan nilai aktivitas antioksidan. Penelitian dilakukan bersifat eksperimental dan diuji secara kuantitatif. Uji aktivitas antioksidan dengan metode DPPH (1,1-difenil-2-pikrilhidrazil) secara spektrofotometer UV-Vis pada panjang gelombang maksimum 517 nm dan Operating Time (OT) selama 30 menit. Penelitian ini menggunakan kontrol positif vitamin C dengan konsentrasi 5 ppm, 7,5 ppm, 10 ppm, 12,5 ppm dan 15 ppm. Sampel yang digunakan yaitu ekstrak etanol kental jantung pisang nangka, ambon, dan tanduk dengan konsentrasi 50 ppm, 100 ppm, 200 ppm, 300 ppm dan 400 ppm. Hasil uji aktivitas antioksidan dinyatakan dengan nilai IC50, pada Vitamin C 8,25±0,05 µg/mL (antioksidan kuat), jantung pisang nangka 276,54±8,19 µg/mL (antioksidan lemah), ambon 136,04±2,30 µg/mL (antioksidan sedang),  dan tanduk 111,22±1,76 µg/mL (antioksidan sedang). Hasil uji aktivitas antioksidan dilanjutkan dengan analisis data menggunakan uji Kruskal-Wallis menunjukkan p-value < 0,05. Kesimpulan penelitian ini adalah ada perbedaan aktivitas antioksidan pada ekstrak etanol jantung pisang nangka, ambon, dan tanduk.
Analisis Pengaruh Tempat Penyimpanan Terhadap Kadar Protein Pada Ikan Patin
Authors: Lestari Safitri Indah , Aina Ganea Qorry , Yusran Dini Indriaty
Published: February 2023

Ikan Patin (Pangasius sp.) merupakan ikan asli perairan Indonesia yang berhasil didomestikasikan. Daging ikan patin memiliki kandungan kalori dan protein yang cukup tinggi sehingga banyak dikonsumsi masyarakat Indonesia. Jumlah total produksi ikan patin sampai tahun 2014 adalah 403.132,80 ton dengan rata-rata peningkatan produksi tahunan sebesar 30,73%. Tujuan penelitian ini adalah untuk mengetahui gambaran tempat penyimpanan terhadap kadar protein pada ikan patin. Penelitian ini adalah penelitian deskriptif dengan metode Kjeldahl. Variabel pada penelitian ini adalah variabel tunggal yaitu kadar protein pada ikan patin yang dianalisa dengan variasi tempat yang berbeda. Sampel yang digunakan adalah daging fillet ikan patin segar. Berdasarkan hasil penelitian yang telah dilakukan, kadar protein tertinggi terdapat pada kulkas freezer dengan rata-rata sampel 1 sebesar 12,22%, sampel 2 sebesar 12,36%, dan sampel 3 sebesar 12,19% dan rata-rata kadar protein terendah terdapat pada kulkas bawah sampel 1 sebesar 10,04%, sampel 2 sebesar 10,06%, dan sampel 3 sebesar 9,97%. Dari hasil uji statistik terdapat pengaruh tempat penyimpanan terhadap kadar protein (F hitung > F tabel) denga nilai p < 0.05, dimana dari ketiga perlakuan tersebut penyimpanan di freezer memiliki nilai kadar protein tertinggi dibanding dengan penyimpanan di chiller dan kulkas bawah, dan perlakuan daging ikan yang tidak disimpan didalam kulkas (kontrol) adalah yang paling tinggi kadar proteinnya dibanding ketiga penyimpanan tersebut.