bluuebunny/crossref_metadata_2025 huggingface dataset:
Fluorescence Lifetime Imaging Applied To The Mixing Between Two Non-Isothermal Sprays
Authors: Wang M. , Stiti M. , Chaynes H. , Becker S. , Lemoine F. , Castanet G.
Published: July 2023

Droplets temperature is a key parameter for the study of heat and mass transfers in many spray applications (spray cooling, spray combustion, spray drying, spray scrubber for cleaning air and other gases of various pollutants and dust particles…). In this study, we develop a new method based on the measurement of the fluorescence lifetime to characterize the droplet temperature in sprays. The method is tested in the mixing region of two water sprays, which are injected with a significantly temperature difference. Time Correlated Single Photons (TCPSC) is applied to characterize the fluorescence decay in the time domain which is normally mono exponential for a fluorescent dye at a given temperature. For some well-chosen fluorescent dyes, like rhodamine B (RhB), the fluorescence lifetime strongly varies with the temperature. Hence, in the mixing region of two non-isothermal sprays, the fluorescence is expected to follow a biexponential decay. In this study, we discuss the possibility of using the fluorescence decay to determine the temperature of the two sprays as well as their respective volume fraction. In a first step, a simplified configuration is considered where the two sprays are seeded with eosin Y and rhodamine 6G separately. Since these dyes have very different lifetimes and no temperature dependence, the fluorescence decay changes with the mixing fraction alone. A calibration is necessary to evaluate the amount of liquid originating from each of the two sprays. The femtosecond laser used for the ultrashort excitation of the fluorescent molecules is focused inside the spray using a long-distance microscope lens to obtain two-photon absorption within a small volume of a few tens of microns. The out-of-field fluorescence usually affecting the measurements in dense sprays when one-photon absorption is used, is suppressed using this approach. In a second step, both the temperature and the mixing fraction are measured seeding the two sprays by rhodamine B only. The fluorescence decay is further analysed to determine the lifetime and the signal contribution of both sprays. Results show that the volume fraction of a given spray must exceed about 10% to make it possible to determine its temperature and its volume fraction with a reasonable accuracy (typically a few percent for the volume fraction and 2°C for the temperature). Simultaneous measurements of the two sprays temperatures and volume fractions provide a means to calculate the mixing temperature (the average between the temperatures of the two sprays weighted by their volume fraction). One of the benefits of the newly developed technique is to remove the problems inherent to intensity-based measurements. Given that rhodamine B has a more intense emission of fluorescence at low temperatures, intensity-based measurements are known to be deficient for evaluating the mixing temperature, the coldest spray always has a larger signal and therefore a greater importance in the measured temperature.
Post Processing Sparse And Instantaneous 2D Velocity Fields Using Physics-Informed Neural Networks
Authors: Di Carlo D. , Heitz D. , Corpetti T.
Published: July 2023

This work tackles the problem of resolving high-resolution velocity fields from a set of sparse off-grid observations. We follow the framework of Physics-Informed Neural Networks where simple Multi-layer Perceptor (MLP) are trained to solve partial differential equations (PDEs). In contrast with other state-of-the-art methods based of Convolutional Neural Networks, these models can be applied to super-resolve sparse Lagrangian velocity measurements. Moreover, such a framework can be easily extended to output divergence-free quantities and offer simple implementation of prior physical as regularization terms. In particular, we employ a sub-grid model based on structure-functions to improve the accuracy of the super-resolved velocity fields of turbulent flows. Numerical experimentation on synthetic data shows that the proposed approach can accurately reconstruct dense Eulerian velocity fields from sparse Lagrangian velocity measurements.
Liquid Pattern And Velocity Field On A Surface During Spray Impingement
Authors: Schulz F. , Martins F.J.W.A. , Beyrau F.
Published: July 2023

The process of fuel injection and the associated wall impact is critical for the quality of combustion in engines. Secondary droplets and wall deposits are strongly related to incomplete combustion and soot emissions. To reduce harmful emissions and optimise the combustion, further investigations of the processes of spray impingement, secondary droplet formation and wall film formation are of central importance. In order to obtain a more comprehensive picture of the interaction between spray and wall, light sheet visualizations and particle image velocimetry (PIV) measurements were performed on an impinging gasoline spray within a conditioned pressure vessel. For this purpose, measurements were conducted both perpendicular to the jet axis and parallel to the wall. The focus here is on the conditions in a modern, homogeneously operated gasoline engine with a high-pressure injection valve with a well-known spray. The spray under investigation has already been studied using high-speed shadowgraphs and phase doppler anemometry measurements. The combination of the data allows validation and a better understanding of the present measurements. The injection pressure was 150 bar, the vessel temperature 80°C, and the nozzle-to-wall distance 35 mm. The vessel pressure was varied from 0.4 bar to 6 bar, which represents typical charge conditions in an engine. The measured data allowed the analysis of the internal structure of the spray and the quantification of the flow movements before and after the spray impact. The results obtained provided detailed new insights into the relevant sub-processes.
Assessing Super-Resolution GANs For Randomly-Seeded Particle Fields
Authors: Güemes A. , Sanmiguel Vila C. , Discetti S.
Published: July 2023

In this work, we demonstrate and assess the performances of a novel super-resolution generative adversarial network (GAN) framework. The algorithm, recently introduced by the authors, leverages random spatial sampling in particle images to provide incomplete views of the high-resolution underlying fields. The main novelty is that the architecture, named Randomly Seeded GAN (RaSeedGAN), does not need full high-resolution training samples. The training is performed directly using the sparse sensors (e.g. particles) available in each snapshot, reduced on a regular grid by spatial averaging in bins. Bins without vectors are simply skipped during training. Provided that the particles randomly sample the space within the dataset, it is possible to reconstruct the mapping from low to high-resolution input with such incomplete ``gappy'' views. The proposed technique is tested on several synthetic datasets based on simulations, ocean surface temperature distribution measurements, and particle image velocimetry data of a zero-pressure-gradient turbulent boundary layer flow. While the applications in this work target fluid mechanics examples, the proposed method can be applied to more general frameworks where mapping is performed by moving sensors and/or with random on-off status. The results show increased accuracy compared to standard processing and direct cubic interpolation of the scattered velocity vectors. An analysis of the turbulent flow features, turbulence statistics, and spectra demonstrates an increase in spatial resolution of at least a factor of 3 in terms of cut-off frequency, with physically consistent estimated fields.
Stereoscopic PIV Measurements Of The Human Thermal Plume
Authors: Sankaran A. , Fuchs T. , Hain R. , Kähler C.J.
Published: July 2023

A human thermal plume contributes significantly towards indoor fluid flows. Such flows impact the ventilation system designs like mixing and displacement ventilation. Further, the human thermal plume influences the dispersion of air constituents to and away from the breathing zone. This is also relevant in the transport of respiratory droplets which results in spread of respiratory diseases including COVID-19. One of the general scenarios in many ventilated spaces is the sitting condition which is the focus here. Experiments were performed with a thermal manikin and comparisons were made with a real human. The thermal plume is visualised by Stereoscopic PIV with the visualisation plane located 30 cm above the head parallel to ground. The results presented here show that the thermal plume from a manikin without breathing function have many similarities in the average flow field above the head with the field induced by a real person. The peak velocity observed with the real person is slightly lower than the one of the thermal manikin and the structures of the thermal plumes resemble to some extent in both cases. The real person with breathing or talking revealed a bi-lobe like structure with the secondary lobe due to the breath. The thermal manikin also showed a second lobe which possibly is due to the thermal plume from the legs. Furthermore, the effect due to breathing, speaking, and movement of the real person are analysed. The integral values do not vary with respect to the different situations except for the movement case. The characterizations of these phenomena are important because they cannot be simulated by the manikin, while they affect the extent and strength of the thermal convection flow.
Application Of The Phase Doppler Measurement Technique For The Characterization Of Supersonic Gas Atomization
Authors: Apell N. , Tropea C. , Roisman I.V. , Hussong J.
Published: July 2023

A dual-mode phase Doppler measurement system has been set up for the characterization of the complex spray produced through supersonic gas atomization. The atomizer design has been based on a generic close-coupled configuration operated with water and air, which leads to high local Mach numbers and complex patterns of compression and expansion waves within the gas flow field. As a result, the dense spray is characterized by high particle velocities and a wide range of particle sizes, which proves challenging for experimental investigations. Measurements of local particle size and velocity distributions have been performed in various radial positions within the spray downstream of the atomizer, where the spray is fully developed. The set point of operation, which is defined by the gas stagnation pressure and the liquid mass flow rate, has been varied systematically, covering a wide range. By decoupling both operational parameters, their influence on the atomization result has been investigated independently. Furthermore, the atomizer geometry has been varied in terms of liquid nozzle diameter and liquid nozzle protrusion length. In accordance with data from the literature, the gas stagnation pressure has been observed to lead to decreasing median particle size and dispersion of the particle size, when increased. However, as a novel finding, the atomization result has been shown to be more sensitive to changes in the liquid mass flow rate. Thus, increasing the liquid mass flow rate results in an increase in both the median particle size and the dispersion of the particle size. The relationship between the atomization result and the gas-to-liquid ratio has been clearly shown to be ambiguous, that is, a function of the gas stagnation pressure and the liquid mass flow rate. Neither the liquid nozzle diameter nor the liquid nozzle protrusion length have been found to have an influence on the median particle size. However, the latter clearly influences the dispersion of the particle size in a complicated way, while the effect of the liquid nozzle diameter is more subtle. It has been concluded that the complex coupling between operational parameters and the specific atomizer design evident in supersonic gas atomization requires a deeper understanding of the local gas flow field and its interaction with the liquid flow.
Novel Phase Doppler Profile Sensor For Simultaneous Measurement Of Size, Velocity, And Position Of Droplets
Authors: Niehoff M. , Kneer R. , Dues M. , Siswanto A. , Reddemann M.A.
Published: July 2023

In numerous technical flow applications knowing size, velocity, and position of dispersed structures simultaneously enables the comprehensive characterization of the underlying dynamics. A suitable interferometric measurement technique capable of measuring simultaneously the three droplet characteristics is introduced for the first time. This novel measurement technique called phase Doppler profile sensor (PDPS) combines the measuring principles of the laser Doppler profile sensor (LDV-PS) for velocity measurement along a measuring line with the phase Doppler technique for particle size determination. A proof-of-concept of this technique was successfully performed by comparison to another established measurement technique on a controlled use case of a displaceable mono-disperse droplet stream. In this first optical setup, a conventional phase-Doppler sensor is used as receiving unit with a conventional pinhole aperture cutting the measurement volume. Hence, the resulting performance for simultaneously measuring the droplet diameter, velocity and position along a measuring line mark the preliminary status reached and are supposed to improve in future measurements with a removed pinhole aperture. So far, the average relative deviation of PDPS compared to the reference technique simultaneously measuring diameter, position, and velocity is 1.14% (diameter), 2.18% (position), and 0.4% (velocity) when using a general laboratory setup.
Simultaneous PIV-LIF Measurements With A SCMOS Color Camera Using RuPhen
Authors: Shah J. , Mucignat C. , Lunati I. , Rösgen T.
Published: July 2023

Simultaneous velocity and temperature measurements are important in understanding the heat and momentum transfer in thermal fluid flow applications. PIV measures the displacement of a constellation of tracer particles using cross-correlation to obtain the velocity field, while LIF uses temperature-dependent fluorescence emission to map the intensity to temperature using a calibration. In this work, we present a low-cost PIV-LIF system to simultaneously measure velocity and temperature fields in aqueous flows with a single color camera, a CW laser (λe = 465 nm) and a novel dye RuPhen. The technique can also be extended to 3D LIF/3D2C PIV using a scanning light sheet. We find that the RuPhen dye is well-suited due to its peak absorption in the blue, emission in the red, and a strong temperature-dependent emission with a sensitivity coefficient of -4%/ °C. We also propose a method to use the red and green channels to correct for any laser power fluctuations. We demonstrate the technique by studying the flow past and inside a heated hollow hemisphere in a small water tunnel.
Physics-Driven PTV Interpolation Through Learned Regularization
Authors: Floquet J. , Champagnat F. , Beneddine S.
Published: July 2023

This paper deals with spatial interpolation of instantaneous Particle Tracking Velocimetry (PTV) data. Such a task can be handled using generic signal processing tools like B-splines, radial basis functions (RBF) or Kriging. We deal with non time-resolved PTV as gathered by dual frame particle image velocimetry (PIV) systems followed by dual frame PTV algorithms. In such a dual frame context, Physics-based interpolation techniques typically rely on enforcement of divergence free constraints on the interpolated field. The aim of this communication is to explore the wider field of Physics-based PTV interpolators based on learning a deep neural network. These interpolators are learned on a database of flow examples that may be generated by high resolution PIV or DNS. We propose an instance of such a Physics-based PTV interpolator based on the machine learning concept of unrolled optimization. This concept is extended in order to deal with random measurement location, characteristic of PTV data. We also show how to use this concept to perform pressure estimation from PTV data, along with velocity interpolation. The concept is illustrated on a 2D laminar flow, DNS data is used to train and benchmark the proposed method against RBF interpolation. The proposed method is shown to be much more robust than RBF interpolation against low density seeding and noise.
A Two-Camera Depth From Defocus Imaging System And Sensitivity Analysis
Authors: Jiang Y. , Zhou W. , Tropea C. , Zhang Y. , Zhang X. , Cai X.
Published: July 2023

A single lens, two-camera imaging system using backlight photography has been previously proposed based on Depth from Defocus (DFD) for the measurement of size and three-dimensional position of particles or drops. It makes use of two images with different degrees of defocus blur captured simultaneously at different imaging planes. In the present study, the influence of system and particle parameters on the calibration functions and measurement uncertainties of such a system have been comprehensively investigated and experimentally verified. The parameters varied include the distance between the imaging planes, the image bit resolution, pixel resolution and the random image noise. Furthermore, the intensity and position of the backlighting and the type of particle and its relative refractive index have been varied. Experimental verification was conducted using calibration dot targets, polystyrene latex spheres, and pulverized coal powders. A sensitivity analysis was performed using relative errors or differences for the three quantities - calibration function, particle size and particle position. The study concludes with explicit recommendations on which quantities are most influential in determining measurement accuracy and therefore, must be carefully controlled. Using this imaging system, measurements were conducted for a mono-sized standard latex sphere clouds suspended in a water container, and the results of particle size distribution were compared with that obtained using a common single lens, one-camera imaging system with thresholding image processing. Subsequently, the system is used for measurement of a sparse spray. Comparison measurements using the laser diffraction technique and the analysis of focused images are provided,with relatively good quantitative agreement. The measurement depth range based on the DFD method exhibits a simple proportional relationship with particle size, which can be used for bias correction of the particle size distribution and number density. This leads to a highly resolved measurement volume depth; hence, an accurate estimation of the overall measurement volume, allowing very accurate volume number density distributions to be estimated. This constitutes a decisive advantage over existing optical techniques for particle size measurements.
Planar Rainbow Refractometry For Size, Refractive Index And Position Measurement Of Droplets In A Plane
Authors: Li C. , Lv Q. , Wu X. , Tropea C.
Published: July 2023

Rainbow refractometry can simultaneously measure the temperature and geometric parameters of droplets by analyzing the recorded primary rainbow scattering signal of the droplet. The technique therefore has high potential in measurement applications involving reacting/non-reacting sprays. This study develops the planar rainbow refractometer technique, expanding the measurement dimension from a single "line" measurement to a "planar" measurement. The position of the droplet in the plane is determined by the contour of the rainbow signal, whereas the size and refractive index of the droplet are derived from the extracted rainbow image using the calibrated scattering angle. A simple and compact rainbow optical measurement system is constructed based on horizontal slit modulation, enabling the recording of spatially discrete rainbow signals of droplets in a plane. A novel scattering angle calibration method using a precisely traversed monodisperse droplet stream with a priori parameters is proposed and the algorithm for obtaining the calibration coefficients is evaluated by simulation. Spray verification experiments were carried out. The signal processing consists of image recognition, particle localization, and the rejection of non-spherical droplets. The possibility of estimating droplet number density is also discussed.
Exploring the relationship between self-management and blood glucose level in patient with type 2 diabetes mellitus
Authors: Sari Dwi Yustika , Ariyanti Anita Dwi , Masroni Masroni
Published: July 2023

Background: Diabetes mellitus (DM) is a condition characterized by high blood sugar levels resulting from unstable blood sugar levels in diabetics. DM can not only be treated with pharmacological therapy but also requires non-pharmacological therapy, one of which is self-management. Objective: to determine the relationship between the level of self-management and blood glucose in type 2 diabetes mellitus. Methods: This research employed a cross-sectional design with 35 respondents selected through an accidental sampling technique. Data collection involved using the Summary of Diabetes Self-Care Activities (SDSCA) questionnaire and a Glucometer. The data were then analyzed using the Spearman Rank Test.  Results: The data analysis revealed that 62.9% of patients with Type 2 DM experienced self-management in the medium category, and 88.6% had blood sugar levels in the high category. Based on the analysis results, a p-value of 0.180 was obtained, indicating that there is no relationship between self-management and blood glucose levels in patients with type 2 diabetes mellitus. The correlation coefficient of -0.232 indicated a low correlation strength, and as the correlation coefficient is negative, the relationship between the two variables is not in the same direction. Conclusions: It is evident that need more investigation of self-management practices to achieve stable or normal blood sugar levels. Improving self-management is crucial as it can help prevent complications associated with diabetes mellitus.
Hubungan Tingkat Pengetahuan Masyarakat tentang COVID-19 dengan Perilaku Penerapan Protokol Kesehatan Era New Normal di Wilayah Puskesmas Kartasura Kabupaten Sukoharjo
Authors: Cahyani 'Aisyah Nilam , Nurrohmah Anjar
Published: July 2023

Corona Virus Disease (COVID-19) merupakan penyakit menular yang disebabkan oleh virus, telah menyebar ke seluruh dunia termasuk Indonesia. Wilayah Kecamatan Kartasura merupakan wilayah peringkat pertama dengan kasus COVID-19 terbanyak di Kabupaten Sukoharjo. Pemerintah dan pihak berwenang terus menghimbau masyarakat agar tidak mengabaikan tentang bahaya COVID-19 dan pentingnya penerapan protokol kesehatan. Perilaku masyarakat yang baik dalam penerapan protokol kesehatan dipengaruhi oleh faktor pengetahuan. Tujuan penelitian ini adalah menganalisis hubungan antara tingkat pengetahuan masyarakat tentang COVID-19 dengan perilaku penerapan protokol kesehatan di era New Normal di Wilayah Puskesmas Kartasura. Penelitian ini menggunakan metode observasi analitik desain cross sectional. Pengambilan sampel menggunakan metode non probability sampling dengan jumlah sampel sebanyak 97 responden. Hasil penelitian menunjukkan bahwa hasil uji Rank Spearmen antara tingkat pengetahuan masyarakat tentang covid-19 dengan perilaku penerapan protokol kesehatan era new normal di Wilayah Puskesmas Kartasura Kabupaten Sukoharjo (p value=0,024). Terdapat hubungan yang signifikan antara Tingkat Pengetahuan Masyarakat tentang COVID-19 dengan Perilaku Penerapan Protokol Kesehatan Era New Normal di Wilayah Puskesmas Kartasura Kabupaten Sukoharjo.
Rasionalitas Penggunaan Obat Antihipertensi Pasien Jantung Koroner Instalasi Rawat Jalan Rumah Sakit Nirmala Suri
Authors: Parmadi Anom , Rejeki Sri , Wulandari Adilla Fitria
Published: July 2023

Obat antihipertensi pada pasien jantung koroner perlu penanganan yang tepat dan perlu perhatian agar tidak menjadi masalah medis utama karena prevalensi yang tinggi. Faktor risiko terjadinya penyakit jantung coroner adalah riwayat penyakit hipertensi. Evaluasi rasionalitas dalam menggunakan obat antihipertensi bertujuan untuk memberikan jaminan kepada pasien jantung coroner dalam menggunakan obat yang tepat. Kriteria rasionalitas dalam menggunakan obat meliputi tepat pasien,  tepat indikasi, tepat obat, dan tepat dosis. Penelitian mengevaluasi rasionalitas dalam menggunakan obat antihipertensi pada pasien penderita jantung koroner di Instalasi Rawat Jalan Rumah Sakit  Nirmala Suri. Penelitian ini berupa penelitian non-eksperimental dengan rancangan deskriptif analitik dan desain studi retrospektif terhadap pasien jantung koroner di instalasi rawat jalan Rumah Sakit Nirmala Suri pada bulan Desember 2020-Februari 2021. Pengambilan sampel dilakasanakan dengan teknik simple random sampling dan didapatkan sejumlah 85 sampel. Instrumen penelitian berupa checklist. Hasil evaluasi rasionalitas dalam menggunakan obat antihipertensi kepada pasien penyakit jantung coroner di Instalasi Rawat Jalan Rumah Sakit Nirmala Suri pada bulan Desember 2020 - Februari 2021 berdasarkan guideline JNC VIII dan pedoman standart Departemen Kesehatan RI sudah rasional. Hasil penelitian didapatkan yaitu tepat pasien mencapai 100%, tepat indikasi mencapai 100%, tepat obat mencapai 100%, dan tepat dosis mencapai 90,59%.
Profil Peresepan Penggunaan Obat Antihipertensi di Puskesmas Pare Temanggung Periode Maret - April 2021
Authors: Sumariyanti S , Widiastuti Rina , Sulistyowati Rini , Eltivitasari Andita
Published: July 2023

Hipertensi merupakan salah satu penyakit degeneratif dengan angka kejadian yang cukup tinggi.Terapi yang diberikan kepada pasien hipertensi biasanya dilakukan dalam waktu yang jangka panjang. Tujuan dari pengobatan hipertensi adalah untuk mengurangi mortalitas dan morbiditas yang berhubungan dengan kerusakan organ target seperti seperti gagal jantung, penyakit jantung koroner atau penyakit ginjal kronik. Penelitian ini mempunyai bertujuan untuk memberi gambaran mengenai profil peresepan obat antihipertensi di Puskesmas Pare Temanggung pada bulan Maret-April 2021 yang meliputi golongan obat, jenis obat, kombinasi obat, dosis obat, frekuensi pemberian obat, dan lama pemberian obat. Jenis penelitian ini adalah deskriptif dengan pendekatan retrospektif. Penelitian menggunakan metode total sampling dan mendapatkan 100 data resep pasien hipertensi. Data yang terkumpul akan diolah dan dilakukan analisis data kemudian disajikan dalam bentuk tabel. Hasil penelitian menyebutkan bahwa pasien hipertensi paling banyak berusia 51-75 (66%). Pasien perempuan (63%) paling banyak dibanding pasien laki-laki (37%). Penggunaan obat antihipertensi yang paling sering digunakan adalah sebagai terapi tunggal (84%). Golongan obat hipertensi yang paling sering digunakan adalah Calcium Channel Blocker/CCB (89%). Jenis obat hipertensi yang paling sering digunakan adalah amlodipin (88%). Lama terapi pemberian obat hipertensi paling banyak sekitar 10 hari (88%).
Analisis Tingkat Kepuasan Konsumen terhadap Kualitas Pelayanan Kefarmasian di Apotek Makmur Sehat Sukoharjo
Authors: Khoirunisa Safira , Adiningsih Retnowati
Published: July 2023

Pelayanan yang menerapkan standar dalam bidang kefarmasian mampu menciptakan kepuasan pada konsumen. Apotek harus mampu menerapkan standar pelayanan yang berkualitas. Pelayanan yang tidak sesuai akan berpengaruh pada keberlangsungan apotek. Kepuasan yang dirasakan konsumen pada pelayanan yang diberikan akan berpotensi menjadi pelanggan tetap apotek tesebut. Penelitian ini bertujuan mengetahui tingkat kepuasan konsumen terhadap kualitas pelayanan kefarmasian di Apotek Makmur Sehat Sukoharjo. Penelitian menggunakan desain diskriptif dan dilaksanakan di Apotek Makmur Sehat Sukoharjo. Sampel yang digunakan sejumlah 385 responden. Pemilihan sampel dengan teknik purposive sampling. Alat pengumpulan data menggunakan kuesioner yang mencakup 5 dimensi berupa dimensi bukti langsung/ tangible, ketanggapan/ responsiveness, empati/ emphathy, keyakinan/ confidence, kehandalan/ reliability untuk mengukur kepuasan pasien. Hasil penelitian dimensi  bukti langsung/ tangible sebesar 80,42%, ketanggapan/ responsiveness sebesar 83,12%, empati/ emphathy sebesar 82,81%, keyakinan/ confidence sebesar 80,75%, dan kehandalan/ reliability didapatkan hasil sebesar 80,16%. Secara general, tingkat kepuasan konsumen terhadap kualitas pelayanan kefarmasian di Apotek Makmur Sehat Sukoharjo masuk dalam kategori sangat puas.
Ekstrak Etanol Daun Mangga (Mangifera indica L.) pada Uji Efektivitas Analgetik Mencit (Mus musculus)
Authors: Kardiansyah Eri Kurniawan , Endrawati Susi
Published: July 2023

Daun mangga mengandung senyawa kimia seperti alkoloid, flavonoid, steroid, tanin, acid fenolik, flavonol, ester fenolik serta mangiferin (C-glucoxanthones). Daun tersebut mempunyai khasiat sebagai pereda nyeri.  Mangiferin merupakan zat yang dikandung dalam daun mangga (Mangifera indica L.) yang dapat memberikan efek Pereda sakit. Tujuan penelitian ekstrak etanol daun mangga (Mangifera indica L.) untuk menguji daya pereda rasa nyeri dan menentukan kadar ekstrak yang mempunyai efektivitas analgetik. Hipotesis ekstrak etanol daun mangga memiliki efektivitas analgetik pada mencit (Mus musculus) paling baik. Jenis penelitian eksperimental. Ekstrak etanol daun mangga dibuat beberapa dosis antara lain 25mg/kgBB,50mg/kgBB,100mg/kgBB, kontrol positif obat analgetik digunakan Asetosal 65 mg dan kontrol negatif minyak goreng. Hasil pengamatan meliputi uji organoleptis ekstrak, banyaknya jumlah geliat yang terjadi pada hewan uji setelah diinduksi asam asetat dan persen daya analgetik. Teknik analisa data menggunakan metode ANOVA ddengan dukungan program SPSS. Data statistik penelitian menunjukkan bila ekstrak etanol daun mangga berbeda nyata terhadap kontrol positif yaitu nilai p < 0,05.Ekstrak etanol daun mangga dosis 25 mg/kgBB, 50mg/kgBB, 100mg/kgBB memberikan daya analgetik masing-masing 22,14%, 22,46%, dan 25,31%.
Pengaruh Pengetahuan Pemberian Leaflet Tentang Cara Penggunaan Dan Penyimpanan Obat Tetes Mata Di Apotek Gawok Sukoharjo
Authors: Pertiwi Anti Tirani Wahyuning , Hartono H
Published: July 2023

Pengetahuan adalah hasil dari rasa tahu seseorang yang telah terjadi setelah seseorang melakukan penginderaan terhadap suatu objek tertentu. Penginderaan terjadi melalui panca indera yang dimilikinya seperti mata, hidung, telinga yang didasari oleh pengetahuan. Pada penelitian ini juga menggunakan leaflet untuk memberi penjelasan. Leaflet praktis dan mudah dibawa ke-mana saja. Leaflet didesain dengan warna-warna dan gambar-gambar atraktif yang menarik seseorang dalam membaca informasi yang dijelaskan dalam leaflet. Tujuan dari penelitian ini untuk meningkatkan pengetahuan pasien tentang cara penggunaan dan penyimpanan obat tetes mata di apotek Gawok Sukoharjo. Penelitian ini menggunakan metode analitik Cross Sectional dengan teknik penelitian one group pre test- podt test design. Hasil dari penelitian ini pada kuisioner pretest mayoritas sudah berpengetahuan baik dengan total 75 responden (60%) dan hasil postet juga mayoritas berpengetahuan baik dengn total 114 responden (91,2%), dari hasil pretest dan posttest terjadi kenaikan tingkat pengetahuan dikarenakan adanya pemberian leaflet serta edukasi tentang cara penggunaan dan penyimpanan obat tetes mata.
Infeksi Nematoda Usus pada Petani di Kabupaten Sukoharjo Jawa Tengah dan Faktor yang Mempengaruhinya
Authors: Prabandari Anggraeni Sih , Sari Ajeng Novita , Ahtamagara Ardita Ferlinda
Published: July 2023

Petani merupakan kelompok risiko tinggi terinfeksi cacing nematoda usus karena kontak erat dengan tanah yang merupakan media perkembangan telur cacing menjadi stadium infektif. Infeksi nematoda usus diasosiasikan dengan perilaku hidup bersih dan sehat serta pengetahuan tentang penyakit kecacingan. Penelitian ini bertujuan untuk mengetahui prevalensi kecacingan pada petani di Desa Wonorejo Kecamatan Polokarto Sukoharjo Jawa Tengah. Jenis penelitian adalah observasional dengan pendekatan cross sectional. Identifikasi nematoda usus dilakukan dengan metode sedimentasi formol eter menggunakan sampel feses yang diambil dari 31 petani, Hubungan perilaku hidup bersih dan sehat serta pengetahuan tentang kecacingan dianalisa menggunakan uji Chi square berdasarkan kuisioner yang diberikan. Berdasarkan hasil penelitian, prevalensi infeksi nematoda usus sebesar 3,33% (1/31) dengan spesies teridentifikasi hookworm (cacing tambang). Tidak ada hubungan antara perilaku hidup bersih dan sehat terhadap infeksi nematoda usus pada petani (pvalue 0,93 > 0,05), demikian juga dengan tingkat pengetahuan tentang kecacingan (pvalue 0,634 > 0,05).
Literature Review: Faktor Risiko Obesitas Pada Remaja Di Indonesia
Authors: Pratama Bangkit Ary
Published: July 2023

Obesitas pada remaja yang terus meningkat setiap tahun menjadi masalah kesehatan yang harus dihadapi seluruh negara di dunia termasuk Indonesia. Obesitas dapat menimbulkan masalah kesehatan di masa mendatang karena obesitas pada remaja akan memprediksi obesitas saat dewasa. Obesitas menjadi salah satu faktor risiko utama penyakit kronis yang dapat meningkatkan angka mortalitas. Mengatasi masalah ini pada tingkat populasi kritis akan mencegah potensi dampak jangka panjang dari obesitas remaja. Tujuan kajian literatur ini ialah untuk mengetahui faktor risiko obesitas pada remaja di Indonesia. Penelitian ini merupakan penelitan literature review dengan sumber data jurnal ilmiah internasional yang terpublikasi di PubMed dengan tema faktor risiko obesitas pada remaja di Indonesia. Kata kunci yang digunakan ialah "adolescent" and "overweight or obesity" and "Indonesia". Berdasarkan pencarian kata kunci tersebut didapatkan 194 artikel dan hanya 6 artikel memenuhi kriteria yang telah ditentukan. Dua artikel tambahan dimasukkan dalam ulasan dari pencarian yang berasal dari database Indonesia, sehingga artikel yang dimasukkan dalam ulasan ini adalah 8 artikel. Kesimpulan yang diperoleh dari hasil pengkajian ialah faktor risiko obesitas pada remaja di Indonesia meliputi karakteristik remaja, karakteristik keluarga, pola makan, asupan makanan, dan aktivitas fisik.
Hubungan Pengetahuan Dengan Perilaku Masyarakat Tentang Penggunaan Antibiotik Di Desa Badan Kabupaten Sukoharjo
Authors: Fatmawati Noviana , Wahyuningsih Sri Saptuti
Published: July 2023

Mayoritas masyarakat masih memakai obat antibiotik secara tidak tepat. Kejadian seperti itu apabila berlangsung terus menerus akan memicu terjadinya kondisi yang disebut resistensi antibiotik.  Penelitian ini memiliki tujuan untuk mendapatkan informasi tentang hubungan pengetahuan, dengan perilaku pemakaian obat antibiotik di masyarakat Desa Badan Sukoharjo. Jenis penelitian ini merupakan penelitian observasional dengan pendekatan cross sectional. Penelitian ini menggunakan alat ukur berupa kuesioner, yaitu kuesioner pengetahuan dan perilaku. Data penelitian dianalisa menggunakan Pearson Product Moment. Responden yang digunakan pada penelitian ini sejumlah 78 orang. Data penelitian diperoleh 57,7% jenis kelamin responden adalah perempuan. Usia responden  17 – 26 tahun (41%). Sekolah Menengah Atas (SMA) menjadi pendidikan terakhir sebagian besar responden, yaitu sejumlah 60,3%. Pekerjaan swasta diperoleh data 51,3%. Hasil distribusi tingkat pengetahuan responden yaitu 29,5% berpengetahuan baik. Responden berpengetahuan cukup sebesar 53,5%, dan 14,1% responden berpengetahuan kurang. Responden berpengetahuan tidak baik sebanyak 2,6%. Responden berperilaku baik diperoleh data 41%, 55,1% cukup dan kurang sebanyak 3,8%. Perhitungan Pearson Product Moment menghasilkan nilai signifikan (p) 0,000 < 0,05.  Nilai koefisien korelasi sebesar 0,512. Kesimpulan terdapat hubungan yang signifikan antara pengetahuan dengan perilaku pemakaian obat antibiotik di masyarakat Desa Badan Sukoharjo.
Estrategia didáctica basada en el uso de la plataforma Liveworksheets para el fortalecimiento de la escritura.
Authors: García Cedeño Martha Elizabeth , Santana Sardi Gustavo Adolfo
Published: July 2023

Introducción: El presente trabajo aborda una problemática suscitada en el contexto actual donde hay mayor predominio del uso de las herramientas tecnológicas para el fortalecimiento educativo de la escritura en los estudiantes, la misma que busca mejorar los escritos que se hacen a diario.

Objetivo: Por ello se establece como objetivo: Diseñar una estrategia didáctica basada en la plataforma Liveworksheets, para fortalecer la escritura en los estudiantes.

Método: El abordaje metodológico contempla un estudio de tipo descriptivo, con un enfoque mixto, de diseño no experimental, se da la aplicación de técnicas de instrumentos, tales como entrevista, encuestas y fichas de observación, aplicado a 5 docentes y 50 estudiantes de la Unidad Educativa Jorge Icaza.

Resultados: Entre los resultados se constató que la escritura es un problema que afecta a los estudiantes por no estar cumpliendo con las reglas ortográficas, las omiten debido a su desconocimiento al momento de usarlas; entre ellas tenemos, uso de la b, v, h, c, z, s, ll, y g, j.

Conclusión: Se llega a la conclusión que se debe de usar herramientas tecnológicas digitales de fácil acceso en el sistema educativo que sean gratuitas, se puedan utilizar y mejoren el proceso de aprendizaje de manera general, se puede evidenciar que el uso del liveworksheets contribuye eficazmente al fortalecimiento de la escritura de los estudiantes.
Ev Hanımlarının Sportif Rekreasyon Katılımlarının Yaşam Doyumu ve Mutluluk Üzerine Etkisinin İncelenmesi
Authors: SAKA Tuğçe , GÜMÜŞGÜL Ceren , GÜMÜŞGÜL Osman
Published: July 2023

Amaç: Çalışmanın temel amacı ev hanımlarının sportif rekreasyon katılımlarının yaşam doyumu ve mutluluk üzerine etkisinin incelenmesidir. Gereç ve Yöntem: Araştırmaya Kütahya’nın Tavşanlı ilçesinde bulunan 204 ev hanımı katılmıştır. Veri toplama aracı olarak araştırmacılar tarafından oluşturulan katılımcılara ait kişisel bilgilerin analiz edilmesi için sosyo-demografik bilgi formu, Diener ve ark. (1985) tarafından geliştirilen ve Türkçe geçerlik güvenirliği Köker (1991) tarafından yapılan Yaşam Doyumu Ölçeği ve Demirci ve Ekşi (2017) tarafından geliştirilen Mutluluk Ölçeği kullanılmıştır. Bulgular: Sigara kullanma ve eğitim durumları değişkenlerine göre “mutluluk” alt boyutunda istatistiki açıdan anlamlı farklılaşma görülmezken (p>0,05), “yaşam doyumu” alt boyutunda anlamlı fark bulunmaktadır (p0,05). Gelir düzeyine göre ise mutluluk ve yaşam doyumu her iki alt boyutta da farklılaşma olduğu görülmüştür (p
Analyzing Indonesian Cement Companies’ Efficiency Using the Stochastic Frontier Analysis Method Period 2014-2018
Authors: Afina Syadza , Hendrawan Riko
Published: July 2023

Cement industry is one of the important industries in supporting the country’s development. However, the level of cement utilization in Indonesia in 2014–2018 experienced a fluctuating growth. In 2014–2016, the decreased revenue growth had been followed by the decreased growth in net profit margin and return on assets, while the increased revenue growth in 2016–2018 was not followed by the increased growth in net profit margin and return on assets. Therefore, it is necessary to analyze the company’s efficiency to maintain its performance. The results of this study indicate that the variable of raw materials cost had a significant negative effect on efficiency, variable of labor cost, total assets, revenue, and interest rates had significant positive effects on efficiency, while return on equity and return on assets had no significant effect on efficiency. The most efficient cement company was Semen Indonesia, Ltd with a value of 0.93609 and the least efficiency one was Semen Baturaja, Ltd with a value of 0.09772.
Students' Evaluation of Teaching Practices at Foreign Languages Department (FLD) in Taif University
Authors: Abdelaziz Ahmed Awwad Othman
Published: July 2023

This research paper demonstrates authentic materials to enrich the student evaluation of teaching henceforward (SET) at the Foreign Languages Department (FLD), namely; an electronic online questionnaire adopted from the National Center for Academic Accreditation and Evaluation at Taif University that was used as a  tool by students to evaluate teachers' teaching practices. It aimed mainly to enhance the standard of the courses. The sample of this survey included (956) male and (945) female students' evaluation reports for (11) female teachers and (16) male teachers who taught them different courses in the 2nd term of the academic year 2018–2019. The data collected through this standardized questionnaire was analyzed and reflected notable results towards effective teaching practices at FLD. Moreover, there was statistically notable variation among the sample responses due to the academic level difference between fresh and junior students, which was in favor of fresh students (sig=.000).
Local Centers and Their Connectivity: Globalization and the Need of Centralization
Authors: Pohlmann Gonzaga Filipe
Published: July 2023

This paper investigates the multifaceted implications of globalization on global production networks, education, and climate change. Globalization has engendered the seamless movement of capital, goods, and ideas worldwide, concentrating economic activities in specific regions. This phenomenon yields advantages such as knowledge exchange and access to new markets, but also poses challenges such as intensified competition. The globalization of production networks profoundly affects education, demanding individuals to possess technical expertise, digital literacy, and intercultural proficiencies in response to evolving labor market needs. Despite digital connectivity, knowledge acquisition remains predominantly localized, thereby emphasizing the delicate balance between digital accessibility and localized educational attainment. Furthermore, global production networks bear significant consequences for climate change, as material and energy flows transcend geographic boundaries, exacerbating environmental impacts. The adoption of sustainable practices and robust environmental regulations assumes paramount importance in mitigating these effects. However, the challenge persists in externalizing environmental and social costs. By comprehending the intricate interdependencies and complexities inherent in globalization, we can navigate the opportunities and address the challenges posed by global production networks.
Developing an Instrument That Explores Customers’ Experience with Banking E-Services during the COVID‐19 Pandemic in Saudi Arabia
Authors: Alharthi Sager
Published: July 2023

This study aims to develop a research instrument that measures e-banking customers’ experience of online banking services. In addition, the study aims to validate and define the newly developed instrument and to explore the factors influencing customers’ experiences with banking e-services in Saudi Arabia. An electronic database search was used to formulate a new questionnaire to address the study’s main themes (constructs). Experts provided face and content validity, and items that failed to contribute to an explanation of the study concepts were excluded. The first draft contained 10 themes and 78 items, but once the questionnaire’s conceptual framework had been clearly defined, the number of items was reduced to 75. The questionnaire represents customers’ experiences with the banking e-service, and it provides researchers and experts with a tool for assessing the factors that influence the promotion of e-services in the banking sector.
Determinants of Capital Adequacy Ratio in the Banking Sector: Evidence from the Arab Region
Authors: Obeid Rami
Published: July 2023

The capital adequacy ratio is one of the most important indicators used to assess the ability of the banking sector to absorb shocks. Therefore, central banks have paid attention to the importance of monitoring this ratio on an ongoing basis, given the vital role of the banking sector in supporting the economy. In this paper, we investigate the banking and economic factors that could affect the capital adequacy ratio in the Arab banking sector, by using dynamic panel data model for a panel of 35 banks spread across seven Arab countries during the period 2015 to 2020.

The results show that there is a positive and significant relationship between credit risk (ratio of non-performing loans to total loans) and the size of the bank on the one hand, and capital adequacy ratio on the other hand. There is also a negative significant relationship between bank profitability (return on assets) and capital adequacy ratio, while there is no significant relationship between dynamic provisions and capital adequacy ratio. Finally, regarding the role of economic variables, the study shows that the real GDP growth rate has a significant positive impact on the capital adequacy ratio in the Arab region.
HetNet Micro dan Pico Cell untuk AMC UE 10 GHz menggunakan SKE pada Lingkungan Bergedung
Authors: Andrita Andrita Ceriana Eska , Wahyu Muldayani
Published: July 2023

User Equipment (UE) bergerak pada lintasan yang berada diantara gedung-gedung. UE tersebut menggunakan frekuensi 10 GHz. Metode Single Knife Edge (SKE) digunakan untuk mekanisme difraksi. Lintasan UE melewati HetNet (Heterogeneous Networks) yang terdiri dari microcell dan picocell. Propagasi UE kondisi uplink, dan kanal AWGN. AMC (Adaptive Modulation and Coding) yang digunakan memanfaatkan MCS (Modulation and Code Scheme) yang terdiri dari QPSK, 16QAM, dan 64QAM. Persentase cakupan yang menggunakan selection combining HetNet sebesar 95,52%, Node Base microcell 88,05%, dan Node Base picocell 56,71%. Persentase penggunaan selection combining dengan modulasi 64 QAM didapatkan 70,11%.
Percepatan Waktu Pembibitan Pakcoy dengan Teknologi Rumah Semai
Authors: Pratiwi Artdhita Fajar , Sari Widya Utami
Published: July 2023

Tanaman pakcoy adalah salah satu tanaman sayur yang mudah dibudidayakan dan menjadi pilihan para petani. Berbagai metode budidaya juga telah banyak dikembangkan, tetapi budidaya pada lahan pertanian biasa masih tetap menjadi pilihan petani yang memiliki lahan. Hal ini disebabkan karena sudah menjadi keahlian mereka dan juga turun temurun. Namun, banyaknya permintaan akan bibit tanaman pakcoy, tetapi tidak tersedia, menyebabkan banyak petani juga membeli bibit dari luar daerah atau mencoba membibitkannya sendiri. Akan tetapi bibit yang dihasilkan dengan cara tradisional masih kurang unggul. Oleh sebab itu, untuk mendapatkan bibit yang banyak perlu waktu lama. Untuk menjawab permasalahan tersebut, maka dalam penelitian ini dibuatlah sebuah rumah semai dengan teknologi cahaya buatan dan penyiraman otomatis. Selain itu rumah semai ini juga ditutupi dengan paranet untuk menghindari masuknya hama/penyakit. Cahaya buatan yang diatur adalah cahaya dari LED Growlight dengan intensitas 50 µmol/m2/s. Cahaya buatan ini diatur sedemikian rupa sehingga bibit tanaman pakcoy akan tersinari selama 16 jam. Sementara untuk penyiraman otomatis diatur untuk dapat mengiram setiap 6 jam sekali. Berdasarkan hasil pengujian, proses pembibitan tanaman pakcoy dengan menggunakan teknologi rumah semai ini lebih cepat daripada proses pembibitan tradisional atau metode lain tanpa cahaya buatan, yaitu bibit tanaman dapat dipindah tanam pada umur 8 hari.