bluuebunny/crossref_metadata_2025 huggingface dataset:
The impact of electrification of heating on the power grid for a selected area microgrids
Authors: Laskowski Michał , Krzysztof Krajewski , Chaja Patryk , Zawadzki Paweł , Bykuć Sebastian
Published: May 2024

In an era of changes in the electricity market, where the share of renewable energy sources is increasing and moving away from conventional coal-based energy, the electricity used for heating is gaining importance, for example to power heat pumps. They currently are one of the most common ways for heating buildings as an alternative to fossil fuels and biomass. In this article, the authors present an analysis aimed at answering the question whether using the concept of microgrids in Polish realities provides a feasible solution. Within the framework of this article, analyses were carried out by assuming the electrification of the heating installation of users in a local microgrid located in a selected location of the Polish low-voltage distribution network. The increase in electricity demand needed to generate the corresponding amount of heat was then estimated, and subsequently the impact of this demand on the microgrid was determined. In addition, in the article, the authors estimate the production of a prosumer PV installation at the selected location and analyze the level of autoconsumption of the generated electricity in the PV installation by the heat pump.
CO2 capture from flue gases in a temperature swing moving bed
Authors: Grądziel Sławomir , Zima Wiesław , Cebula Artur , Rerak Monika , Kazak-Jagieła Ewa , Pawłowski Adam , Blom Richard , Nord Lars Olof , Skjervold Vidar Torarin , Mondino Iorgia
Published: May 2024

This paper presents a test stand for the capture of CO2 from flue gases arising due to firing pulverised hard coal. The stand, financed from the 2014–2021 Norway Grants, is installed at a Polish power plant. The innovation of the proposed CO2 capture method, developed by the Norwegian partner in the project (SINTEF Industry), lies in the use of activated carbon in the process of temperature swing adsorption in a moving bed. The paper also presents preliminary results of numerical simulations performed using the General PROcess Modelling System (gPROMS) software. The simulations concerned the operation of a supercritical power unit combined with a system for capturing CO2 from flue gases. Transient operation of the system was analysed, assuming rapid changes in the power unit load. Special attention was paid to the CO2 capture process energy consumption at an increase in load by 5% of the power unit nominal capacity in 30 s. It is found that the proposed CO2 capture method “keeps up” with such rapid load changes at the method energy consumption smaller than 2 MJ/kg CO2.
Numerical and experimental analysis of thermal and flow operating conditions of waterwall tubes connected by fins
Authors: Majdak Marek , Grądziel Sławomir , Zima Wiesław , Cebula Artur , Rerak Monika , Kozak-Jagieła Ewa
Published: May 2024

This paper presents a method for determining the temperature distribution in the cross-section of waterwall tubes connected by fins using an in-house numerical algorithm prepared in the MATLAB environment, based on differential equations with separable variables. In order to verify the correctness of the algorithm operation, the temperature values obtained from it, determined for the frontal area of the tubes, are compared with the temperatures found in the Ansys Fluent environment and those measured on the test stand. A system corresponding to a fragment of the combustion chamber wall of a supercritical steam boiler was selected to perform the analysis. The system consists of three tubes connected by fins. The temperature distributions in the cross-sections of the tubes were compared for the case when each of the tubes was heated on one side with the same heat flux and when the heat flux falling on the central tube was by 50% higher than the heat flux incident on the neighbouring tubes. Experimental verification was carried out on a stand equipped with three vertical tubes connected by fins, heated on one side by infrared radiators.
Experimental and numerical analysis of the impact of a liquid flow rate on the operational performance of a cross-flow tube-and-fin heat exchanger
Authors: Bury Tomasz , Hanuszkiewicz-Drapała Małgorzata
Published: May 2024

The paper is dedicated to an issue of the influence of a nonuniform flow of mediums in a cross-flow water-air heat exchanger, the core of which is a bundle of elliptical finned tubes. The main purpose of the work is to determine the impact of non-uniform water inflow for various mass flow rates on the thermal efficiency of the heat exchanger. Multivariate analyses were carried out for various temperatures of water, and for measured nonuniform air distribution at the heat exchanger input. Two variants of water distribution were considered: non-uniform water distribution assumed considering a non-uniform air inflow and water distribution resulting from hydraulic resistances calculated for different locations of water inlet and outlet nozzles. Simulation results were compared with the experimental outcomes obtained in cases of the non-uniform natural inflow of both mediums and to the computation results for a case of the uniform media inflow. The results obtained in this work confirm the significant deterioration of the thermal efficiency of heat exchangers caused by a non-uniform media inflow (by as much as 18.5% compared to the case of a uniform media inflow) which is compliant with other numerous works. The control of the water flow through the individual heat exchanger tubes enables the improvement of thermal efficiency by 4.5% to 18.6% compared to the device with uncontrolled inflow of working fluids, which for some of the analyzed cases is even better than a completely uniform inflow of heat carriers.
Review of hydrogen-based propulsion systems in the maritime sector
Authors: Kolodziejski Marcin
Published: May 2024

The maritime industry is undergoing a technology transition that aims to increase the use of low-emission fuels. There is a significant trend visible of new ships being ordered with alternative fuel propulsion. In the future shipping’s fuel market will be more diverse and it will rely on multiple energy sources. One of the very promising ways to meet the International Maritime Organisation’s decarbonization requirements is to operate ships with sustainable hydrogen propulsion. One of the possible options to limit greenhouse gases emissions is the production of low-carbon ‘green’ hydrogen by water electrolysis using low-carbon electricity. This hydrogen can then be used directly in fuel cells to produce electricity or in the internal combustion engines, without having a carbon impact and pollutant emissions. Hydrogen can also be converted into its derivatives. This paper presents a review of recent studies of ships’ hydrogen propulsion systems, different aspects of production, transportation, storage, and using liquid/gaseous H2 and its derivatives as a fuel in the shipping industry. H2 propulsion in maritime transport is still in the experimental phase. In most cases, these experiments serve as a kind of platform for evaluating the applicability of different technological solutions. This article presents existing ships’ hydrogen and its derivates propulsion systems, projects, and existing conceptual studies.
Gas temperature distribution in the evaporator of GTM400 turbojet engine
Authors: Brodzik Łukasz
Published: May 2024

The paper presents the results of measurements carried out in the GTM400 turbojet engine with a changed combustion chamber geometry. The available publications lack more detailed information on the temperature distribution in evaporators, which are part of the combustion chamber of small turbojet engines. As the results of the analysis showed, this is not simple, because the research takes place in very small spaces. The reason for the work carried out is to check whether the temperatures in the evaporators are high enough. This allows to determine whether the fuel is evaporating properly. Therefore, an analysis was carried out to determine the temperature distribution in the area of the inlet to the evaporator. Thanks to the modification of the combustion chamber, it was possible to measure temperatures, which in the engine literature are simulated using numerical analysis. The analysis described in the paper is one of the stages of preparing the engine for operation with hydrogen. It is modified as part of a project to build a hybrid engine burning traditional JET-A1 fuel and alternative fuel, i.e. hydrogen.
New empirical correlations for the viscosity of selected organic phase change materials
Authors: Cieśliński Janusz Tadeusz , Fabrykiewicz Maciej , Wiśniewski Tomasz Stefan , Kubiś Michał , Smoleń Sławomir , Eicke Albrecht , Dutkowski Krzysztof , Głuszek-Czarnecka Małgorzata
Published: May 2024

Although there are many methods and instruments for measuring viscosity, it is still difficult to determine a reliable value of the dynamic viscosity of complex chemicals such as paraffins and fatty acids. This is due to the complex and heterogeneous structure of these compounds in the case of commercial products. On the other hand, the measuring instrument should be selected very carefully, including its measuring principle and measuring range. This paper presents results of viscosity measurements of three organic PCMs (phase change materials) obtained in four different research institutions. Commercial products: paraffin, myristic acid (97%) and mixture of palmitic acid (55%) and stearic acid (45%) were selected as PCMs. Four different viscometers, namely Fungilab V-Pad, Rheotest LK 2.2, Rheometer Anton Paar MCR 102, and Brookfield DV-II + Pro have been used to determine temperature dependent dynamic viscosity of the tested PCMs. Using a large database of present measurement results, correlations were developed to calculate the dynamic viscosity of fatty acids and paraffins, which predict the experimental data within a band of ±20%.
Overview of application options for vertical axis wind turbines
Authors: Kuczyński Waldemar , Michalska-Pożoga Iwona , Szczepanek Marcin , Chmiel Krzysztof
Published: May 2024

The article presents an analysis of the use of Savonius wind turbines with vertical axis of rotation. The first part presents an analysis of the literature with the dentification of the properties of the basic atmospheric parameters related to the air movement referred to as wind. Used mathematical descriptions used in the analysis of air movement and enabling the identification of basic thermodynamic parameters of wind turbines with a vertical axis of rotation were presented. Then, the historical background of the development of wind turbines with a vertical axis of rotation was presented, and constructions of this type currently used were described. Proposals for modification of the configuration and design of Savonius rotors and the impact of these activities on their efficiency were analyzed. These issues were presented in relation to the experimental work carried out in the international research centers. Obvious advantages and disadvantages of using this type of equipment in the field of wind energy were indicated.
Owner survey suggests cats may be undertreated for pain compared to dogs after an elective ovariohysterectomy or orchiectomy
Authors: Adams Laura R. , Muñoz Kirk A.
Published: May 2024

OBJECTIVE

To investigate differences in pain management between dogs and cats after surgical sterilization. We hypothesized that dogs would be more likely to be discharged with analgesics after sterilization compared to cats and that owner compliance would be better in dogs.

ANIMALS

175 respondents owning 92 dogs and 83 cats from a high-volume, low-cost veterinary clinic in Michigan during August 2022.

METHODS

Owners received an online survey designed to assess their pet’s postoperative analgesic care. They were asked demographic information about themselves and their pets. Additionally, they were asked if their pet was discharged with analgesics, if they were administered as prescribed, and if their pet was painful at home. Dogs and cats were included if they were sterilized within 6 months of survey completion and in the owner’s care at the time of the procedure.

RESULTS

The survey was distributed to 5,241 owners and received 227 responses, a response rate of 4.4%. Analgesics were prescribed for 19 of 162 (12%) pets: 14 of 88 (16%) dogs and 5 of 74 (6.7%) cats. There was no difference in the prescription of analgesics between dogs and cats after ovariohysterectomy (P = .09) or orchiectomy (P = .73). 15 of 19 owners reported their compliance in administering analgesics at 78.9%. Owners’ subjective assessments showed that 24 of 86 (28%) dogs and 12 of 68 (17%) cats appeared painful at home.

CLINICAL RELEVANCE

Postoperative pain in cats may not be appropriately managed.
Alcohol Level in Black and White Glutinous Rice Brem at Various Doses of Yeast And Fermentation Time
Authors: Ariati N. K. , Suaniti N. M. , Darma Yanti N. M. D.
Published: May 2024

Brem sebagai hasil fermentasi beras ketan putih maupun hitam memiliki bau asam, rasa manis, serta mengandung alkohol dengan kadar yang berbeda-beda sesuai perlakuan dalam fermentasi. Penelitian ini bertujuan untuk menentukan kadar alkohol dalam brem beras ketan putih dan hitam dengan variasi dosis ragi 1,0; 1,5; dan 2,0% serta lama fermentasi 2, 4, dan 6 hari. Kadar alkohol dalam brem beras ketan putih dan hitam ditentukan dengan kromatografi gas detektor ionisasi nyala (GC-FID). Hasil penelitian menunjukan kadar alkohol dalam brem beras ketan putih meningkat dengan bertambahnya dosis ragi yang diberikan namun menurun dengan bertambahnya lama fermentasi. Sementara, pada kadar alkohol brem beras ketan hitam terus meningkat dengan bertambahnya dosis ragi dan lama fermentasi. Kadar alkohol tertinggi dihasilkan dalam brem beras ketan hitam yang difermentasi dengan penambahan dosis ragi 2,0% dengan lama fermentasi 6 hari.
Kata kunci:   brem, ketan putih, ketan hitam, dosis ragi, kadar alkohol, lama fermentasi
ABSTRACT
Brem as a product of a fermentation of black and white glutinous rice has an acidic smell, a sweet taste, and contains alcohol. This research aimed to determine the alcohol levels in the brem of black and white glutinous rice with yeast dosage variation of 1,0; 1,5; and 2,0% fermented within 2, 4, and 6 days. The alcohol levels in the black and white glutinous rice brem were determined using Gas Chromatography - Flame Ionization Detector (GC-FID). The research results showed that the alcohol level in the white glutinous brem increased with the increase in yeast dosage but decreased as the fermentation time increased. On the other hand, the higher of yeast dosage and the fermentation time, the higher the alcohol content of the black glutinous rice brem obtained. The highest alcohol level was produced by the black glutinous rice, which was fermented with the yeast dosage of 2% yeast and a fermentation time of 6 days.
Keywords: alcohol level, fermentation duration, white and black glutinous rice brems, yeast dosage
SINTESIS FOTOKATALIS ZnO-SiO2 DENGAN METODE SOL GEL UNTUK FOTODEGRADASI ZAT WARNA RHODAMIN B
Authors: Nainggolan L. , Sudiarta I W. , Suarsa I W.
Published: May 2024

Penelitian mengenai sintesis ZnO-SiO2 dengan metode sol gel dan penggunaannya dalam mendegradasi zat warna tekstil Rhodamin B telah berhasil dilakukan. Penelitian ini bertujuan dalam mengetahui karakteristik dari komposit ZnO-SiO2, menentukan waktu optimum dan pH optimum fotodegradasi zat warna Rhodamin B. Karakterisasi fotokatralis meliputi analisis difraksi sinar-X (XRD) untuk kristalinitas, analisis morfologi permukaan dengan mikroskop elektron (SEM), analisis gugus fungsi dengan spektrofotometer infra merah (FTIR). Aktivitas fotokatalitik ditentukan dengan mengukur degradasi larutan Rhodamin B melalui pengukuran absorbansi Rhodamin B sisa dengan metode spektrofotometri UV-Visible. Hasil penelitian ini menunjukkan fotokatalis ZnO-SiO2 berhasil disintesis dengan ukuran kristal berkisar dari 15,51 – 82,71 nm, dengan rata-rata ukuran kristal sebesar 48,53 nm dan kristal berbentuk wurtzite (hexagonal). Fotodegradasi dipengaruhi oleh waktu penyinaran dan pH larutan. Fotodegradasi optimum terjadi pada pH 6 dan waktu penyinaran 3 jam, serta  %D (persentase degradasi)  99,10 ± 0,42 %.
Kata kunci: fotodegradasi, karakterisasi, Rhodamin B, ZnO-SiO2
ABSTRACT
            
Research about the synthesis of ZnO-SiO2 with a sol-gel method and its use in degrading the textile dye Rhodamine B has been done. This research aims to know the characteristics of the ZnO-SiO2 composite and determine the optimum time and pH for the photodegradation of Rhodamine B dye. The photocatalytic characterization included X-ray diffraction (XRD) analysis for crystallinity, surface morphology analysis by electron microscopy (SEM), and analysis of the functional groups by using an infrared spectrophotometer (FTIR). The photocatalytic activity was determined by measuring the degradation of the Rhodamine B solution by measuring the absorbance of the remaining Rhodamine B using the UV-Visible spectrophotometry method. The results showed that the ZnO-SiO2 photocatalyst was successfully synthesized with crystal sizes ranging from 15.51 – 82.71 nm, an average crystal size of 48.53 nm and a wurtzite (hexagonal) structure. The photodegradation was affected by irradiation time and the pH of the solution. The optimum photodegradation conditions occurred at pH 6 and irradiation time of 3 hours, with the percentage of degradation (%D) of 99.10 ± 0.42%.
Keywords: characterization, photodegradation, Rhodamin B, ZnO-SiO2
Authors: Saputra A. , Utami W. , Ningsih S. , . Deliza
Published: May 2024

Limbah cair zat warna Batik Jambi mengandung senyawa organic non-biodegradable yang bersifat karsinogenik. Tujuan penelitian ini untuk mengetahui efektivitas katalis CaO dalam mendegradasi limbah cair zat warna Batik Jambi. Pada penelitian ini, limbah cair zat warna Batik Jambi didegradasi menggunakan metode fotokatalitik  penyinaran matahari dan lampu UV 38 watt dengan dan tanpa katalis CaO dari cangkang kerang bambu. Larutan limbah warna dianalisis menggunakan spektrofotometer UV-VIS pada panjang gelombang 200-800 nm dengan massa katalis 0,02 gram. Data memperlihatkan bahwa hasil degradasi limbah cair zat warna Batik Jambi yang paling baik yaitu penambahan katalis CaO dan penyinaran matahari selama 3 jam sebesar 60,34%. Sedangkan penyinaran lampu UV selama 3 jam hanya sebesar 36,12%. Hasil penelitian dapat memberikan beberapa manfaat yaitu sebagai sumber informasi bagi pengrajin batik tentang pengolahan limbah cair Batik secara sederhana. Selain itu, studi ini sebagai data dukung bagi pemerintah tentang pembuatan produk hukum terkait pengolahan limbah cair batik yang belum terperhatikan.
Kata kunci: Batik Jambi, CaO, degradasi, fotokatalitik, katalis
ABSTRACT
           The wastewater of Batik Jambi dye contains non-biodegradable organic compounds that are carcinogenic. The purpose of this study was to determine the effectiveness of the CaO catalyst in degrading the Batik Jambi dye wastewater. In this research, Batik Jambi dye wastewater was degraded using the photocatalytic method the solar irradiation and a 38-watt UV lamp with and without a CaO catalyst from bamboo shells. The colored waste solution was analyzed using a UV-VIS spectrophotometer at a wavelength of 200-800 nm with a catalyst mass of 0.02 grams.  The data showed that the best result of degradation of Jambi Batik dye wastewater was the addition of a CaO catalyst and solar irradiation for 3 hours of 60.34%. Whereas UV light irradiation for 3 hours was only 36.12%. The result of research could provide several benefits, namely as a source of information for batik craftsmen about the simple processing of liquid waste. In addition, this study served as supporting data for the government regarding the manufacture of law product related to the treatment of batik wastewater which has not been considered
Keywords: catalyst, CaO, degradation, photocatalytic
ADSORPSI LOGAM Pb(II) MENGGUNAKAN ADSORBEN RUMPUT GAJAH TERAKTIVASI
Authors: Annisa R. W. R. , * Hasri , Pratiwi D. E.
Published: May 2024

Rumput gajah (Pennisetum purpureum) merupakan tanaman liar yang belum dimanfaatkan secara optimal. Rumput gajah mengandung selulosa yang cukup tinggi, dengan gugus hidroksil (OH-) dan karboksil (-COOH) yang memiliki kemampuan mengikat logam berat. Oleh karena itu rumput gajah berpeluang dijadikan adsorben untuk menyerap logam berat khususnya logam Pb(II) yang dapat mencemari lingkungan. Pada penelitian ini dilakukan penentuan pH dan waktu kontak optimum serta kapasitas adsorpsi Pb(II) menggunakan adsorben rumput gajah. Tahapan penelitian meliputi pembuatan adsorben rumput gajah, aktivasi adsorben dengan HNO3, penentuan pH optimum, waktu kontak optimum serta kapasitas adsorpsi logam Pb(II). Selanjutnya gugus fungsi adsorben pada saat sebelum dan setelah aktivasi ditentukan dengan FTIR. Hasilnya menunjukkan bahwa pH optimum adsorpsi logam Pb(II) adalah 7 dan daya adsorpsi sebesar 95,60%. Waktu kontak optimum yaitu 60 menit. Kapasitas adsorpsi logam Pb(II) dengan konsentrasi 10, 30, 50 dan 100 ppm berturut-turut adalah 2,00; 6,67; 10,28 dan 13,05 mg/g. Adsorpsi logam Pb(II) menggunakan adsorben rumput gajah teraktivasi mengikuti pola isoterm Langmuir, dengan nilai R2 = 0,9632. Disimpulkan bahwa rumput gajah teraktivasi dapat digunakan sebagai adsorben logam Pb(II).
Kata kunci: rumput gajah, asam nitrat, adsorpsi, logam berat.
ABSTRACT
                    Elephant grass (Pennisetum purpureum) is a wild plant that has not been utilized optimally. Elephant grass contains relatively high levels of cellulose, with hydroxyl (OH-) and carboxyl (-COOH) groups which can bind heavy metals. Therefore, elephant grass can be used as an adsorbent to absorb heavy metals, especially Pb(II) metal, which pollutes the environment. This research included preparing elephant grass adsorbent, activating the adsorbent with HNO3, determining the optimum pH, contact time, and the adsorption capacity of Pb(II) metal. Furthermore, the functional groups of the adsorbent before and after activation were analyzed using FTIR. The results showed that the optimum pH for adsorbing Pb(II) metal was 7, and the adsorption capacity was 95.60%. The optimum contact time was 60 minutes. The adsorption capacity of Pb(II) metal with concentrations of 10, 30, 50, and 100 ppm was 2.00, 6.67, 10.28, and 13.05 mg/g, respectively. Adsorption of Pb(II) metal using activated elephant grass followed the Langmuir isotherm pattern, with R2 value of 0.9632. In conclusion, activated elephant grass can be utilized as an adsorbent for Ph(II) metal.
Keywords: elephant grass, nitric acid, adsorption, heavy metals.
Authors: Siaka I M. , Wijayanthi I. A. G. S. , Ratnayani O.
Published: May 2024

The heavy metal Cu is a common pollutant found in agricultural soils and it contaminates the plants growing on the soils. One technique to reduce the content of heavy metal contamination in agricultural soil is through phytoremediation. The purpose of this study was to reduce the Cu content in the agricultural soil contaminated with Cu and determine the value of the bioconcentration factor (BCF) based on the Cu content in the marigold plants. The method used in this study was the remediation technique with the use of marigold plants (Tagetes erecta L.) as a phytoremediator cultivated in Cu-contaminated soil. The results showed that the reduction in Cu content in the soil which was remediated for 20, 40, and 60 days was 8.1582, 16.4048, and 1.4583 mg/kg, while the average Cu content in marigold plants grown on the polluted soil for 20, 40 and 60 days was 11.8407, 15.7741, and 15.3062 mg/kg, respectively. Based on the results, marigold plant was classified as less effective in absorbing Cu metal which was indicated by the highest effectiveness value found when the plants grow for 40 days i.e. 13.82% (<50%). Based on the ratio of Cu metal content in the soil to its content in plant, namely 0.11-0.14%, the BCF value was <1, which means that the marigold plants were metal excluder plants, less suitable as a phytoremediator. Therefore, It is not recommended that the marigold plants do not use for phytoremediation in the soil contaminated by Cu.
Authors: Rahayuningtyas N. , Amelia D. , Ramadhanti N. , Maharani F.
Published: May 2024

Adas (Foeniculum vulgare Miller) adalah tumbuhan herbal yang mengandung minyak atsiri dengan kandungan senyawa anetol sebagai antimikrobial. Penambahan minyak atsiri adas pada edible coating. merupakan cara untuk melapisi permukaan produk pangan dengan tujuan mencegah kontaminasi patogen sehingga dapat memperpanjang masa simpan. Tujuan dari penelitian ini adalah mengetahui pengaruh penambahan minyak atsiri adas (Foeniculum vulgare Miller) sebagai edible coating pada bakso. Destilasi minyak atsiri adas dilakukan dengan metode Microwave Assisted Extraction (MAE). Destilasi ini menggunakan variabel daun segar dan biji adas. Variabel yang digunakan dalam destilasi  adalah daya (80, 240, 400) watt dan waktu (20, 25, 30) menit. Hasil  penelitian menunjukkan, rendemen tertinggi dihasilkan dari minyak atsiri adas yaitu sebanyak 1% pada daya 400 watt dengan waktu 20 menit. Minyak atsiri adas memiliki sifat mudah menguap sehingga identifikasi senyawa dapat diketahui dengan metode Gas Chromatography-Mass Spectrometry (GC-MS) . Berdasarkan hasil analisa gugus fungsi diketahui bahwa minyak atsiri mengandung senyawa utama yaitu trans anetol yang memiliki sifat antimikrobial.
Kata kunci: adas, antimikrobial, edible coating, Microwave Assisted Extraction (MAE)
ABSTRACT
           Fennel (Foeniculum vulgare Miller) is an herbal plant consists of essential oil containing anethole as an antimicrobial. Adding fennel essential oil to edible coatings is a way to coat the surface of food products to prevent pathogen contamination, thus extending the shelf life. This research aimed to analyze the effect of adding fennel essential oil (Foeniculum vulgare Miller) as an edible coating on meatballs. Distillation of essential oil from fennel leaves and seeds was carried out using the Microwave Assisted Extraction (MAE) method. This distillation uses variable fresh leaves of 100 grams and fennel seeds of 50 grams with variable power of 80 watts, 240 watts, and 400 watts. The time used in distillation is 20 minutes, 25 minutes, and 30 minutes. The results showed that the highest yield obtained was as much as 1% of fennel essential oil at a power of 400 watts with a time of 20 minutes. The identification of chemical compounds contained in the funnel essential oils was done by using the Gas Chromatography-Mass Spectrometry (GC-MS) method. The results showed that the funnel essential oil contained the main compound of trans-anethole with antimicrobial properties.
 Keywords: antimicrobial, edible coating, fennel, Microwave Assisted Extraction (MAE)
INTERPRETASI EKOWISATA OLEH PEMANDU WISATA DI KAWASAN PARIWISATA UBUD
Authors: Istighfarah Ashira , Dalem Anak Agung Gde , Ginantra I Ketut
Published: May 2024

Tourism is one sector whose development which very intensively developed by the government. One form of sustainable tourism is ecotourism. Tour guides in ecotourism activities have an important role in connecting tourists with interpreted tourist attractions. Interpretation is a tool for connecting what tourists should get in an environment with what should be displayed. Interpretation is very important in educating tourists so they understand, respect, and support nature conservation, as well as provide satisfaction to tourists. Therefore, research on the interpretation of ecotourism is very important for tourism in the Ubud tourism resort. This research was conducted from January 17- May 3, 2023. The objective of this study is to determine the type of interpretation, the means of interpretation and the quality of the interpretation of tour guides. The methods used were observation, interviews, and questionnaires distribution. The interviewed guides were 16 informants and 30 tourists as respondents. This research found that there were 8 types of interpretation utilised by tour guides in the Ubud tourism resort: guided tour, point duty, roving interpretation, presentation, demonstrations, living history, interactive, and lecture or talk. There are 8 types of facilities used by guides in the Ubud tourism resort, print, self-guiding program signs, interpretive panels, visitor center, video, slideshow, observation hides, and handphone. The interpretation quality of the tour guides in the Ubud tourism resort was very good with a score of 92.21 %. Tourist satisfaction with the tour guide and the interpretation given by the tour guide was very good with a score of 85.16%.
Keywords: Attractiveness, Bali, Tourist Destinations, Tourists, Villages
СТРАТИГРАФИЯ И ХРОНОЛОГИЯ НЕКОТОРЫХ ОПОРНЫХ АРХЕОЛОГИЧЕСКИХ КОМПЛЕКСОВ ЗОЛОТООРДЫНСКОГО СОЛХАТА ПО МАТЕРИАЛАМ РАСКОПОК 1978-2023 ГГ.
Authors: Сейдалиев Эмиль Исаевич
Published: May 2024

В статье представлены результаты анализа материалов, происходящих из раскопок некоторых опорных археологических комплексов золотоордынского городища Солхат. В ходе долговременных систематических исследований золотоордынской столицы Крыма был получен значительный массив археологических материалов, которые введены в научный оборот лишь частично. На основании этих исследований, анализа архитектурных памятников, материалов письменных источников и данных картографии была составлена основная хронология истории Солхата. В то же время публикация ряда материалов и анализ стратиграфической ситуации позволяет конкретизировать и детализировать хронологию некоторых показательных комплексов городища. Для анализа в настоящей публикации были привлечены данные раскопок из центральной части городища: медресе-мечеть Узбека, так называемой «мечети Бейбарса». Показательными также являются археологические комплексы происходящие с окраин городища, это материалы из раскопок караван-сарая, мавзолея на отроге горы Малый Агармыш и средневековой бани. Для анализа стратиграфии и хронологии отобраны были в основном закрытые археологические комплексы: хозяйственные ямы, землянки, отдельные культурные напластования, перекрытые более поздними сооружениями и нивелировочными поверхностями. Это позволило выделить определенный комплекс находок (в основном массовый материал), являющихся хроноиндикаторами. Корреляция данных из этих комплексов с материалами, происходящими из других объектов как на территории Солхатского городища, так и за его пределами, будет способствоватьопределению культурной и хронологической принадлежности этих археологических памятников и находок обнаруженных на них в процессе раскопок.
СВЯТЫЕ МЕСТА УЛУСА ДЖУЧИ: САРАЙЧИК И БАРЧИНКЕНТ
Authors: Талеев Докей Абдикеримович
Published: May 2024

Изучение истории возникновения и развития средневековых городов Казахстана остается одной из наиболее сложных и важных задач современных исследований. Комплексное изучение памятников позволяет определить как общие черты развития городов, так и особенности формирования отдельных городских поселений. Города Сарайчик на реке Жайык и Барчинкент в низовьях Сырдарьи являлись не только крупными торгово-экономическими, но и духовными центрами Улуса Джучи. Сложившись как города в монгольский период, они сыграли важную роль в политической жизни Золотой Орды. Судьба городов Сарайчик и Барчинкент тесно связана с общим ходом истории этого государства. Данные письменных источников и материалы многолетних археологических исследований свидетельствуют, что расцвет обоих городов совпадает со временем подъема, а начало упадка и запустения – с началом распада Золотой Орды. Интронизация в Сарайчике ханов Берке, Жанибека и других Джучидов, а затем возникновение некрополя, где упокоены останки ряда правителей Золотой Орды, обусловили начало сакрализации места. Барчинкент к XIV в. приобрел известность как город, где проживали многие проповедники ислама и знатоки шариата, сыгравшие заметную роль в распространении мусульманской религии среди населения Улуса Джучи. Раскопки в Сарайчике и Барчинкенте (городище Кышкала) позволили идентифицировать местонахождение и исторические названия городов, время их возникновения и роста, а также определить особенности функционирования как центров международной торговли, ремесла и культуры.
ANALISIS POSTUR KERJA DAN USULAN FASILITAS KERJA PADA PROSES PENDISTRIBUSIAN CYLINDER DENGAN MENGGUNAKAN METODE WERA dan NERPA DI PT. INDOGRAVURE
Authors: Efendi Ilham , Nurhidayat Asep Endih , Putra Muhammad Fidiandri
Published: May 2024

PT. Indogravure is a company engaged in printing flexible packaging for the pharmaceutical, agro-farming, food and beverage industry segments. In the production process activities there are problems in the cylinder warehouse division, there are 4 (four) work processes that have a potential risk of injury, namely the cylinder taking process, the cylinder checking process, the cylinder transport process, and the cylinder distribution process in the form of musculoskeletal complaints experienced by workers. To identify these complaints, the Workplace Ergonomic Risk Assessment (WERA) and Novel Ergonomic Postural Risk Assessment (NERPA) methods are used. The aim is to determine the level of risk experienced by workers during the work process and provide suggestions for improvements that minimize the occurrence of MSDs complaints. From the research conducted, it was found that there are 3 work processes that have the highest risk, namely the first is the process of taking cylinders with a score of 31 (medium) based on the WERA method and the level of risk level is 7 (high) based on the NERPA method, the second is the process of transporting cylinders with a score 29 (medium) based on the WERA method and a risk level level of 7 (high) based on the NERPA method, the three cylinder distribution processes with a score of 39 (medium) based on the WERA method and a risk level level of 7 (high) based on the NERPA method. The proposals given in this study are assistive devices designed using CATIA V5R21 software in the form of hydraulic trolleys, ladder conveyors, and electric trolleys. Where in improving worker posture using the proposed assistive devices, evaluation results are obtained using CATIA V5R21 software with a (low) level of risk, then a re-analysis of the evaluation results is carried out using the software, there is a decrease in the level of risk using the WERA method in the process of taking cylinders from scores 31 (medium) becomes a score of 23 (low) and based on the NERPA method the risk level is 7 (high) to 3 (medium), in the process of transporting the cylinder from a score of 29 (medium) to a score of 21 (low) and based on the NERPA method the risk level is 7 ( high) to 3 (medium), and in the cylinder distribution process from a score of 39 (medium) to a score of 27 (low) and based on the NERPA method the risk level is 7 (high) to 3 (medium). With the proposed tool design, it is hoped that the work process can be carried out effectively, efficiently and in accordance with ergonomic values so that the level of risk of injury experienced by workers is reduced.
OPTIMASI EFISIENSI ENERGI PADA MOBIL LISTRIK EMPAT PENUMPANG MELALUI SISTEM REGENERATIVE BRAKE
Authors: Handayani Dwi
Published: May 2024

The continuous use of fossil energy can have an impact on the energy crisis and environmental pollution Greenhouse Gas (GHG) is a contributing factor to climate change. Electric cars are one of the solutions to these problems. Because electric cars use clean and renewable electrical resources to drive their vehicles, they can reduce dependence on limited fossil fuels. In the use of electric cars that utilize regenerative braking technology, the first stage is to design the portion of mechanical braking on both the front and rear wheels, along with regenerative braking. The goal is to obtain a safe braking portion by following the ideal braking upper limit that has been set, as well as the lower limit set by the ECE braking standard. After obtaining a safe braking portion that is in accordance with actual conditions, the next step is to find the energy generated by the regenerative braking system by simulating it using Matlab-simulink. In this simulation, the regenerative brake efficiency can be obtained by comparing the absorbed energy and the available braking energy. The regenerative brake system in this study is able to absorb 1.7623 kWh of energy with an efficiency of 67.31% at a regenerative braking portion of 0.137 and front mechanical braking of 0.6629 at a road friction coefficient of 0.8.
ANALISIS PENGARUH MATERIAL KEMASAN, TAMPILAN KEMASAN, BENTUK KEMASAN, DAN INFORMASI PADA KEMASAN TERHADAP MINAT BELI MAKANAN KHAS LAMPUNG KERIPIK PISANG
Authors: Fitriani Risa , Nugraha Andhyka Tyaz
Published: May 2024

The aim of this research is to investigate the influence of packaging material, packaging appearance, packaging shape, and information on the packaging on consumer purchasing interest in Asa Cipto Roso MSMEs, Siger Keripik MSMEs, and Lampung Chips MSMEs. The method applied in this research is the PLS-SEM method with the help of software in the form of SmartPLS 3.0. Research data was collected from 120 respondents who were banana chips consumers at Asa Cipto Roso MSMEs, Siger Keripik MSMEs, and Lampung Chips MSMEs which were distributed via an online Google form. The findings from this research illustrate that packaging elements which include packaging material, packaging appearance, packaging shape, and information on the packaging can trigger consumer buying interest in Asa Cipto Roso MSMEs, Siger Keripik MSMEs, and Lampung Chips MSMEs. The findings from this research can provide implications for designing banana chip packaging that suits consumer tastes so that it can trigger consumer buying interest in Asa Cipto Roso MSMEs, Siger Keripik MSMEs, and Lampung Chips MSMEs.
تەماشا شانویێ د دیاردێن شانویا كوردیدا
Authors: Osman Shero Qadry , Mohammad Faysal Munqidh
Published: May 2024

ڤەكۆلین باس ل جوانكاریێن ئەنجامدانا پێرفورمانس و رادا پشكداریكرنا ئەوێ  د بدەستڤەهینانا (تەماشێ‌) د نمایشكرنا شانۆیێدا دكەت، هەروەسا ڕۆلێ هەرە گرنگ یێ جوانكاریێن پێرفورمانسا‌ زارڤەكەری د نمایشكرنا شانۆیێدا، و رەنگڤەدانا ئەوان هەمی جوانكارییان د بدەستڤەهینانا تەماشا شانۆیێدا. كو رهوریشالێن ئەوان بۆ بنیاتێ ئەوان یێ هونەری دزڤریت، ئەوژی ل دویڤ نویكرنێ و جۆراوجۆركرنێ، و ل دویڤ پێدڤیێن ئەنجامدانا شانۆیێ بۆ ئەوان نمایشێن د شانۆیا كوردی یا هەڤچەرخدا، و بكارهینانا  ئەوان وەكو سەمپلا ئەڤێ ڤەكۆلینێ. هەر چەندە شانۆیا كوردی ب شێوەیەكێ تایبەت كاریگەری ل سەر بزاڤا شانۆیێ بگشتی نەكریە، داكو ستوینەكا گرنگ پێكبهینیت بو ئەوان یێن د بوارێ هونەرێ شانۆیێدا كار دكەن، وەك شێوازەك بۆ دەربرین و پێشكێشكرنا بۆچوونێن خۆ یێن هونەری پشتبەستنێ ل سەر بكەن. بەلێ هەر چەوابیت شانۆیا كوردی یا ڤاڵا نەبوویە ژ پێكهاتێن جوانیێ بۆ پەیداكرنا تەماشێ‌ ل دەڤ تەماشەڤانی، چ شانۆیا كوردی یا هەڤچەرخ بیت، یان ژی دیاردێن دەستپێكی یێن سەرهلدانا شانۆیا كوردی بیت. یان شێوەیێن دەستپێكی یێن دیاربوونا تەماشێ‌ د رێورەسمێن ئاینی و ئەنجامدانا هەلكەفتێن جەماوەری، وەكو ئاهەنگێن پێکهینانا  هەڤژینیێ  یان هندەك یاریێن فلكلوری یێن كو ژلایێ كەسێن خۆدان ئەزموون ڤە ب ئامادەبوونا جەماوەرەكێ زۆر ژ خەلكێ ئاسایی دهاتنە ئەنجامدان. دیسان پێرفورمانس بویە بەشەك پشكداری د بكارهینانا  پروسا نمایشێدا كریە، و بویە هوكارێ‌ ئەوێ  ژلایێ جوانیا هزریڤە كو لگەل ئاماژەیێن كاركتەران و دەربرینێن ئەوان یێن هونەری بگونجیت، د پەیوەندیەكا دناڤبەرا زارڤەكەری و پێرفورمانسا وی ودناڤبەرا پێكهاتێن دی یێن شانۆیێ. لەورا ئەڤ چەندە رەنگڤەدانێ ل سەر وەرگری دكەت، داكو ژ لایێ هەستانڤە بگوهوریت ژ رەوشەكێ بەرەڤ رەوشەكا دیڤە ببەت، ئانكو بەرەڤ رەوشەكا بلندتر و جوانتر و خۆ شترڤە ببەت، كو خۆ ببینیت بەشەك ژ ناڤەرۆكا نمایشا شانۆیێ‌. داكو تەماشە ب تێگەهێ خۆ یێ تمام و لگەل هەمی پێكهاتێن دی یێن نمایشێ ب دەستڤەبهێت، كو زارڤەكەر ب ئێك ژ گرنگترین پێكهاتێن نمایشێ‌ دهێتە هژمارتن، لەورا پێدڤیە پێرفورمانسا زاڤەكەری ل دویڤ بهایێن جوانكاریێ بیت، دا ببیتە ئەگەرێ ب دەستڤەهینانا تەماشێ.
Learning from COVID equity measures to increase community resilience: Case study of a rural local public health unit
Authors: Mongeon Amanda , Humeniuk Walter , Schubert-Mackey Kerry , Deacon Leith
Published: May 2024

During the COVID-19 pandemic, certain populations were more likely to be infected, become ill, and suffer worse outcomes than others. Additionally, the response measures put in place to prevent viral spread had disproportionately negative impacts on certain groups of people compared to others. Local public health has a role in not only mitigating the infectious disease impacts but also those related to equity. This paper describes multi-sectoral initiatives led by a local public health agency in the district of Timiskaming, Ontario, Canada to address inequities tied to the pandemic. The authors reflect on this experience to identify opportunities for rural community actors, including local public health, to build community resilience and reduce the impact of future emergencies.
Dialecto y sociedad en Buenaventura
Authors: Caicedo H. Max
Published: May 2024

Resumen
El discurso escrito base fundamental de la educación y la polifonía del discurso pedagógico
Authors: Martinez María Cristina
Published: May 2024

Resumen
La creatividad, la lectura y el texto literario
Authors: Castellanos Llanos Gabriela
Published: May 2024

Resumen
El oficio en movimiento
Authors: Castrillón Valderrutén María del Carmen , Quintín Quilez Pedro , Valencia Gutiérrez Alberto , Palomino Martínez María Fernanda , Mejía Sanabria Carlos Alberto , Sánchez Salcedo José Fernando , Roa Martínez María Gertrudis , Vanegas Muñoz Gildardo
Published: May 2024

Este libro reúne textos gestados en el ámbito del Seminario Permanente de Investigación del grupo Sociedad, Historia y Cultura del CIDSE (Universidad del Valle) que, quincenalmente, reúne a los docentes con los estudiantes del Doctorado en Sociología adscritos al grupo. El objetivo es poner en consideración de los lectores algunas reflexiones de orden teórico y metodológico alimentadas por experiencias de investigación, mostrar las vicisitudes de la práctica de la pesquisa social y compartir formas de hacer que han estado por detrás de algunos estudios. La compilación se constituye en una muestra de la pluralidad metodológica que caracteriza hoy a las ciencias sociales. Pero no tanto por la diversa procedencia disciplinar de los autores, la disparidad de los temas tratados o la variedad de perspectivas teóricas, sino porque cada diseño de la estrategia metodológica atiende a las peculiaridades del objeto de estudio y a la manera en que se lo ha construido como problema de investigación. Los capítulos buscan resaltar elementos usualmente excluidos de las presentaciones públicas de los resultados de las investigaciones. Por ejemplo, se hace aquí referencia a las actitudes y a las disposiciones puestas en juego para llevar adelante una pesquisa, como son la apertura a nuevos aprendizajes, por fuera de automatismos y gestos repetidos de forma confiada; la exigencia de capacidad para avanzar a menudo en medio de dudas e inquietudes sobre la adecuación de los pasos dados, o la apuesta por la reflexibilidad permanente, en especial sobre el lugar que ocupa y el papel del investigador mismo.
حاشية على شرح وقاية الرواية في مسائل الهداية (باب مستحبات الوضوء) لأحمد بن يحيى حفيد سعد الدين التفتازاني(ت916ه)(دراسة وتحقيق)
Authors: محمد غضيب الجبوري ضياء احمد , محمود الجبوري أركان عبد اللطيف
Published: May 2024

الحمد لله أن منَّ عليَّ بتوفيقه لي على إتمام بحثي "باب مُستحبات الوضوء" وهو جزء من الاطروحة ( حاشية على شرح وقاية الرواية في مسائل الهداية) لأحمد بن يحيى سعد الدين التفتازاني(ت916ه)، – دراسة وتحقيق -، وقد لخّصته بالآتي
*استعملت عند النسخ قواعد الاملاء الحديثة، وعلامات التنقيط، وما أجده من أخطاء املائية في متن المخطوط، اقوم بتصحيحه بدون الاشارة الى ذلك في الهامش.
*عزوت الآيات القرآنية التي استشهد بها المؤلف الى سورها، وذلك بذكر اسم السورة ورقم الآية لكن في المتن لعلو مكانتها باعتبارها كلام الله جلّ وعلا، خرّجتُ الاحاديث النبوية الشريفة الواردة في المخطوط، ثم ذكرت حكمها من حيث الصحة او الضعف معتمداً على كتب المحدّثين، كما عرّفت المصطلحات الفقهية واللغوية والاماكن المُبهمة.
حرصت على الالتزام بالأمانة العلمية في ذكر أقوال العلماء من مصادرها المعتمدة، وقد الجأ احياناً للمراجع الحديثة عند تعذّر المصادر القديمة.
* ان المخطوط بالمذهب الحنفي، والذي هو من اهم المذاهب الفقهية التي كُتِبَ لها القبول،  فإن تحقيق كتاب شرعي أمر يدعو للفخر هذا من جهة ، ومن جهة اقتران اسم المُحقّق بذلك العالم.
* عدم تعصب المؤلف لعالم أو لمذهب مُعيّن، ونجد ذلك عند طرحه لأقوال اصحاب المذاهب الاخرى مما يُظهِر جليّاً سعة السنة النبوية من خلال ذكر أقوال الفقهاء والوقوف عند أيسرها.
((الخلوة في الشريعة المسيحية))
Authors: مهدي أسيل صالح , صالح العزاوي خالد عبيد
Published: May 2024

ان النصرانية هي دين النصارى الذين يزعمون أنهم يتبعون المسيح عليه السلام، وكتابهم الإنجيل, والمسيحية اطلقت على الذين اتبعوا بولس من الوثنيين  ذلك أن بولس حين ادعى أن المسيح ظهر له وهو ادعاء غير صحيح بدأ يدعو بأفكار وتعاليم وعقائد لم يقل  بها السيد المسيح(عليه السلام)، ولم يدعُ إليها. وبين قوم لم يبعث إليهم المسيح عليه السلام. الا ان القرآن الكريم دل على أن عيسى ما دعا إلا إلى التوحيد، فغير التوحيد إذن دخل النصرانية من بعده، وما كان عيسى إلا رسولاً لله رب العالمين .
  ولقـد نزل على السيد المسيح كـتـاب هو الإنجيل، وهـو مـصـدق للتـوراة، ومـحـيـى شريعتها، ومؤيد للصحيح من أحكامها، وهو مبشر برسول يأتي من بعده اسمه أحمد، وهو مشتمل على هدى ونور، وهو عظة للمتقين, وضر فيما بعد عن العقيدة المسيحية التي جاء بها بولس ما يسمى بالرهبنة التي كانت قائمة على مبدأ الطاعة والخضوع والبتوليه وهي رهبانية مبتدعة لا اصل لها ولم يأتي بها سدنا المسيح (عليه السلام)
ترجيحات الإمام أبو المظفر السمعاني الفقهية المتعلقة بالبيوع في كتابه(تفسير القرآن) دراسة مقارنة
Authors: صالح ناديه حروش , صالح عماد حسن
Published: May 2024

تناول هذا البحث موضوع (ترجيحات الإمام أبو المظفر السمعاني الفقهية المتعلقة بالبيوع في كتابه (تفسير القرآن) دراسة مقارنة).
ووضح الأحكام الفقهية الخاصة بالبيوع ، والتي تميز بها عن غيره؛ فالبيوع لهما خصوصية راعاها الإسلام بجملة من الأحكام، في الكثير من المجالات في بيع السلم وبيع الاجل والبيع وقت صلاة الجمعة, وفي الأبواب التي تتعلق بالديون والبيوع وغيرها.
وقد عرض هذا البحث هذه المسائل على المذاهب الفقهية المعتمدة، وبيّن الرأي الراجح في كلِّ مسألة بناءً على الدليل، حتى ندرك بأنَّ الشريعة الإسلامية شاملة وافية تناولت كل صغيرة وكبيرة في شؤون الدين والدنيا.
وأبرز البحث أحكام البيوع في ضوء تقسيم البحث إلى مبحثين:
تناولت في المبحث الأول: ترجمة حياة الإمام أبو المظفر السمعاني رحمة الله, ذاكراً كنتيه, ولقبه, ونسبه, وولادته, ومذهبة الفقهي, ومكانته العلمية, وذكرت شيوخه وتلاميذه, ومؤلفات, وفاته.
كما تناولت في المبحث الثاني, ترجيحات الإمام أبو المظفر السمعاني المتعلقة في البيوع في ثلاث مطالب, تناولت في المطلب الأولىترجيحاته في البيع وقت صلاة الجمعة, أما المطلب الثاني: فتناولت فيه ترجيحاته المتعلقة في كتابة الدين, أما المطلب الثالث: فتناولت حكم كتابة الدين على الكاتب.
وختمت البحث بخاتمة بينت فيها أهم النتائج التي توصلت إليها من خلال بحثي هذا.