bluuebunny/crossref_metadata_2025 huggingface dataset:
Secondary Hemophagocytic Lymphohistiocytosis In Typhoid Fever: Case Report
Authors: Suputra I Gusti Lanang Rama Dwi , Asmara I Dewa Putu Gede Wedha
Published: June 2023

Background: In poor countries, typhoid fever is a major cause of fever. The illness can vary in severity from an uncomplicated febrile illness to sepsis and complications like hemophagocytic lymphohistiocytosis (HLH), which affects multiple organs. A delay in diagnosis is frequently the biggest obstacle to a good outcome due to the rarity of this syndrome. Case: A 38-year-old male was admitted with complaints of persistent intermittent fever for three weeks. Other complaints were maculopapular rashes, epistaxis, black-colored stools, abdominal pain, nausea, vomiting, fatigue, and decreased appetite. He was transferred to our hospital due to progressive clinical deterioration. On physical examination, he was pale, with a temperature was 39.5C, a dry tongue with petechial spots at the root of the tongue, and some maculopapular rash of the entire body. There was splenomegaly. Laboratory investigations showed pancytopenia. IgM salmonella typhi was positive. A liver function test revealed transaminitis. Additional laboratory tests showed hypertriglyceridemia, hyperferritinemia and hyponatremia. USG’s abdomen showed splenomegaly. Patient possibility of secondary HLH was considered and investigated accordingly. He was given packed red blood cells, platelets transfusion, and a high dose of methylprednisolone orally. He showed dramatic improvement, complete blood count (CBC) normalized on day 7 with complete recovery on follow-up. Conclusion: We report a hemophagocytic lymphohistiocytosis in typhoid fever with persistent intermittent fever. Based on our case, early diagnosis and prompt treatment are critical to a successful patient’s recovery.
Influence of Mg(II) substitution on the structural, magnetic, and permeability properties of R-type hexagonal ferrites
Authors: Hassan Zahoor Ul , Sadiq Imran , Khan Hasan Mehmood , Hussain Sajjad , Sadiq Farhan , Idrees Mishal , Shahbaz Muhammad , Saeed Samreen , Imran Muhammad , Riaz Saira , Naseem Shahzad
Published: June 2023

A series of single-phase R-type hexagonal ferrites with the composition Sr1-xMgxFe4Sn2O11 (x = 0.0, 0.1, 0.2, 0.3) were manufactured using the auto-combustion sol-gel method sintered at 800 °C. The objective of this work was to study the effect of Mg additives on the structural, magnetic, and permeability properties of the synthesised material. The X-ray diffraction patterns revealed that all prepared samples have hexagonal structures. The scanning electron micrographs revealed the platelet-like structure of the grains, which would help enhance the magnetic permeability of the materials. Magnetic parameters were investigated in the range of applied field ±12.5 kOe. The hysteresis loops revealed the paramagnetic nature of all the synthesised samples. With the substitution of Mg contents, the maximum magnetization increased from 1.05 to 2.62 (emu/g) and the remanence from 0.02-0.09 (emu/g), while the coercivity also increased. The magnetic permeability was determined over the frequency range of 20 Hz to 20 MHz. The magnetic permeability of the synthesized hexagonal ferrites is enhanced due to the presence of grains having a platelet-like structure. Furthermore, the particle size calculated using Langevin equations varied in the range of 4.7 to 6.5 nm. The calculated magnetic permeability properties make this synthesised ferrite material useful for super-high-frequency devices.
Comparison of the performance of an organic acid and an inorganic acid pretreatment by means of enzymatic hydrolysis of coffee husk
Authors: Castro-Ferro Nataly Alejandra , Maniak Halina
Published: June 2023

The study of different lignocellulosic materials for second-generation biofuels is one of the trending topics today because of the high demand for fuels for transportation and electricity generation. Coffee husk is presented as one study option considering that only 10% of the coffee fruit is used for coffee production. The pretreatment of the coffee husk with sulfuric acid (3 or 6%) and citric acid (6 or 12%) was compared using two methodologies. The first had reaction condition time (50, 70, 90, and 1440 min) and temperature (70 and 90 °C), while the second had autoclave conditions (121 °C, 14.696 psi, 60 min). The comparison was made to find the best methodology for acid pretreatment before enzymatic hydrolysis. The best result of the reduction of sugars (17.017%) and glucose yield (3.882%) was found with 6% C6H8O7 in autoclaving (121 °C, 14.696 psi, 60 min) with hydrolysis conditions of 72 h, 150 rpm, 50 °C, and using cellulases from Trichoderma reesei.
Newer chalcone scaffolds with reactive functional groups: Process, spectral and single crystal XRD studies
Authors: Borane Niteen , Deshmukh Amar Ghanshyam , Oza Nidhi Harnesh , Boddula Rajamouli , Patel Paresh Narayan
Published: June 2023

Chalcones are versatile scaffolds for the synthesis of various heterocyclic systems with commercial utility. This work describes the synthesis of five novel chalcone derivatives. Syntheses were performed by a simple one-pot, straightforward Claisen-Schmidt condensation catalyzed with pyrrolidine and KOH. The chalcones were prepared by condensation of 4-formylbenzonitrile with different aromatic ketones at room temperature. The structures of all compounds have been investigated by FT-IR, NMR, and HR-MS spectroscopy. In addition, one chalcone structure was characterized by single-crystal XRD study. Crystal data for C21H15NO2 (Ch2): monoclinic, space group P21/c (no. 14), a = 6.5694(3) Å, b = 33.2697(15) Å, c = 7.4516(4) Å, β = 97.563(2)°, V = 1614.47(14) Å3, Z = 4, T = 293(2) K, μ(MoKα) = 0.083 mm-1, Dcalc = 1.289 g/cm3, 16000 reflections measured (4.898° ≤ 2Θ ≤ 49.99°), 2822 unique (Rint = 0.0249, Rsigma = 0.0196) which were used in all calculations. The final R1 was 0.0484 (I > 2σ(I)) and wR2 was 0.1257 (all data). The absorption maxima of all novel products were evaluated by UV-visible spectroscopy. These well-established structures of all newly prepared chalcone scaffolds with reactive functional groups (i.e. nitrile and 2-propenone) can be exploited as a crucial intermediate in the synthesis of new heterocyclic scaffolds with fluorescence and other applications.
Editorial Board
Authors: Arslan Hakan
Published: June 2023

Editorial Board
UJI AKTIVITAS ANTIBAKTERI EKSTRAK ETANOL KULIT BATANG KAYU JAWA (Lannea coromandelica) TERHADAP Staphylococcus aureus DAN Escherichia coli
Authors: Taufiq Nuramaniyah , Sulfiani  , Sugrani Andis , Faradilah Diyah Syifa
Published: June 2023

Tanaman kayu jawa (Lannea coromandelica) telah dimanfaatkan sebagai obat tradisional, yaitu untuk menyembuhkan luka dalam dan luka luar serta pengobatan muntah darah. Penelitian ini bertujuan untuk mengetahui aktivitas antibakteri  dari ekstrak etanol kulit batang kayu jawa terhadap bakteri Staphylococcus aureus dan Escherichia. Ekstrak kulit batang kayu jawa diperoleh dari hasil maserasi meggunakan pelarut etanol dan menghasilkan ekstrak kental dengan rendemen 0,82 %. Pengujian aktivitas antibakteri dilakukan dengan menggunakan metode paper disk. Penelitian ini menggunakan empat perlakuan, yaitu sampel 2%, etanol 96%, kontrol positif (kloromfenikol) 0,1 % dan kontrol negatif (aquades). Hasil pengujian aktivitas antibakteri menunjukkan bahwa ekstrak etanol kulit batang kayu jawa pada konsentrasi 2% memiliki aktivitas antibakteri terhadap bakteri Escherichia coli dengan daya hambat yaitu 1,0 mm yang digolongkan sebagai antibakteri dengan daya hambat lemah.
ATERRAMENTO ELÉTRICO, UMA REVISÃO BIBLIOGRÁFICA
Authors: Santos Natã Braga Kelly dos , Moura Junior Rodney Silva de , Moraes Roberta Figueira de , Andrade José Antônio Bento de , Rodrigues Junior Adauri Silveira
Published: June 2023

O aterramento elétrico desempenha o papel mais importante de uma instalação elétrica visto que garante a proteção dos usuários e trabalhadores ligados à eletricidade. Sendo assim, esse artigo visa evidenciar os temas mais pertinentes deste tema. Através de uma revisão bibliográfica, foram apresentados os principais pontos que compõem a concepção e entendimento de aterramento elétrico, levando em consideração o cuidado de apresentar os marcos históricos que cercam esse tema. Da teoria filosófica e a apresentação dos conceitos dos cientistas e filósofos até as primeiras formulações mais sólidas. Além disso foram enumeradas as principais normas de regulação e seus atributos. Outro fato relevante é o cenário brasileiro para o tema, destacando as dificuldades de implementar os projetos elétricos no escopo das obras residenciais de pequeno porte. De maneira sucinta, são analisados os mais relevantes componentes que compõem uma estrutura de aterramento e os principais instrumentos usados para a aferição dos parâmetros de eficácia do aterramento.
The first application of a numerically-exact, higher-order sensitivity analysis approach for atmospheric modelling: implementation of the hyperdual-step method in the Community Multiscale Air Quality Model (CMAQ) version 5.3.2
Authors: Liu Jiachen , Chen Eric , Capps Shannon L.
Published: June 2023

Abstract. Sensitivity analysis in chemical transport models quantifies the response of output variables to changes in input parameters. This information is valuable for researchers in data assimilation and model development. Additionally, environmental decision-makers depend upon these expected responses of concentrations to emissions when designing and justifying air pollution control strategies. Existing sensitivity analysis methods include the finite-difference method, the direct decoupled method (DDM), the complex variable method, and the adjoint method. These methods are either prone to significant numerical errors when applied to non-linear models with complex components (e.g., finite difference and complex step methods) or difficult to maintain when the original model is updated (e.g., direct decoupled and adjoint methods). Here, we present the implementation of the hyperdual-step method in the Community Multiscale Air Quality Model (CMAQ) version 5.3.2 as CMAQ-hyd. CMAQ-hyd can be applied to compute numerically exact first- and second-order sensitivities of species concentrations with respect to emissions or concentrations. Compared to CMAQ-DDM and CMAQ-adjoint, CMAQ-hyd is more straightforward to update and maintain while it remains free of numerical errors as those augmented models do. To evaluate the accuracy of the implementation, the sensitivities computed by CMAQ-hyd are compared with those calculated with other traditional methods or a hybrid of the traditional and advanced methods. We demonstrate the capability of CMAQ-hyd with the newly implemented gas-phase chemistry and biogenic aerosol formation mechanism in CMAQ. We also explored the cross-sensitivity of monoterpene nitrate aerosol formation to its anthropogenic and biogenic precursors to show the additional sensitivity information computed by CMAQ-hyd. Compared with the traditional finite difference method, CMAQ-hyd consumes fewer computational resources when the same sensitivity coefficients are calculated. This novel method implemented in CMAQ is also computationally competitive with other existing methods and could be further optimised to reduce memory and computational time overheads.
Dataset variability and carbonate concentration influence the performance of local visible-near infrared spectral models
Authors: Oberholzer Simon , Summerauer Laura , Steffens Markus , Ifejika Speranza Chinwe
Published: June 2023

Abstract. The application of visual and near infrared soil spectroscopy (vis–NIR) is an easy and cost-efficient way to gain a wide variety of soil information to cover high spatial and temporal resolution in large-scale soil surveys and in local field-scale studies. However, unlike for conventional methods, the prediction accuracy of vis–NIR spectral models cannot yet be estimated before the data collection, which hampers its application at the local scale where often a high precision is required (e.g., field experiments). In this study we used soil data from six agricultural fields in Eastern Switzerland and calibrated i) field-specific (local) models and ii) general models (combining all fields) for organic carbon, total carbon, total nitrogen, permanganate oxidizable carbon and pH using partial least squares regression. 24 out of 30 local models showed an accurate or even excellent performance (ratio of performance to deviation (RPD) > 2) and the root mean square errors (RMSE) of prediction were, except for pH, maximum five times higher than the lab measurement error. The variability of a specific soil property and the mean carbonate concentration in the dataset were the two factors influencing the performance of the local models. We found a significant relationship between the coefficient of variation in the dataset and the metrics for model performance (R2, percental RMSE and RPD). Starting from a tolerable prediction error for the spectral measurements, the regressions can be used to develop a sampling design that matches the corresponding target variability. The five inaccurately performing local models with RPD < 2 were on the two fields with highest carbonate content raising the question if local vis–NIR models are suitable for soils with high carbonate concentration. General models combining the datasets from all six fields showed an accurate overall performance but the RMSE on the field level were higher compared to the local models.
Trace elements in PM2.5 aerosols in East Asian outflow in the spring of 2018: Emission, transport, and source apportionment
Authors: Miyakawa Takuma , Ito Akinori , Zhu Chunmao , Shimizu Atsushi , Matsumoto Erika , Mizuno Yusuke , Kanaya Yugo
Published: June 2023

Abstract. Trace metals in aerosol particles impact ocean biogeochemistry. Therefore, semi-continuous measurements of the elemental composition of fine mode (PM2.5) aerosols were conducted using an automated X-ray fluorescence analyzer on a remote island of Japan during the spring of 2018. The temporal variations of mass concentrations of geochemically important elements for this period, such as S, Pb, Cu, Si, and Fe, and their relationships with emission tracers carbon monoxide (CO) and black carbon (BC), were reported. The Integrated Massively Parallel Atmospheric Chemical Transport (IMPACT) model was used to evaluate the source apportionment of these components and was evaluated in terms of emissions and wet removal processes. Pb and Cu were found to have originated mainly from anthropogenic sources (98 % and 93 % on average, respectively) over the East Asian continent. A positive correlation of Pb and Cu with BC and CO was found during the study period, indicating that the emission sources of these metals share the region where the large CO (and BC) emission sources are located. The air masses with minimized impacts of the wet removal during the transport were extracted to elucidate the emission ratio of Pb and Cu to CO, which were, for the first time, evaluated as 152.7 and 63.1 µg g-1, respectively, during the spring of 2018 in the East Asian outflow. The analysis of the tagged tracer simulations by the IMPACT model confirmed that BC and Si can be used as tracers for anthropogenic and dust emissions, respectively, during the observation period. The source apportionment of Fe and Mn in PM2.5 aerosols was conducted using Si and BC tracers, which revealed that the anthropogenic contribution was 17 % and 44 % on average, respectively. Based on the air mass origins of Fe and Mn, their anthropogenic fraction varied from 2 % to 29 % and 9 % to 68 %, respectively, during the high PM2.5 concentration periods. However, despite minor anthropogenic contributions of Fe, they can adversely affect human health and ocean biogeochemistry owing to their higher water solubility. The modeled BC, Pb, Cu, and Fe were evaluated by separately diagnosing their emission and transport. Ratios of modeled to observed concentrations for these components were analyzed in terms of the accumulated precipitation along the transport from the East Asian continent. The current model simulations were found to overestimate the emissions (based on Community Emissions Data System, CEDS v2021-02-05) of BC by 44 % and underestimate Cu by 45 %, anthropogenic Fe by 28 % in East Asia, and the wet deposition rates for BC and Pb. Overall, Cu in East Asia exhibited a different nature from BC and Pb in terms of emission sources and wet removal.
Modelling the effect of aerosol and greenhouse gas forcing on the South Asian and East Asian monsoons with an intermediate-complexity climate model
Authors: Recchia Lucy G. , Lucarini Valerio
Published: June 2023

Abstract. The South Asian and East Asian summer monsoons are globally significant meteorological features, creating a strongly seasonal pattern of precipitation, with the majority of the annual precipitation falling between June and September. The stability the monsoons is of extreme importance for a vast range of ecosystems and for the livelihoods of a large share of the world's population. Simulations are performed with an intermediate-complexity climate model in order to assess the future response of the South Asian and East Asian monsoons to changing concentrations of aerosols and greenhouse gases. The radiative forcing associated with absorbing aerosol loading consists of a mid-tropospheric warming and a compensating surface cooling, which is applied to India, Southeast Asia, and eastern China both concurrently and independently. The primary effect of increased absorbing aerosol loading is a decrease in summer precipitation in the vicinity of the applied forcing, although the regional responses vary significantly. The decrease in precipitation is not ascribable to a decrease in the precipitable water and instead derives from a reduction in the precipitation efficiency due to changes in the stratification of the atmosphere. When the absorbing aerosol loading is added in all regions simultaneously, precipitation in eastern China is most strongly affected, with a quite distinct transition to a low precipitation regime as the radiative forcing increases beyond 60 W m−2. The response is less abrupt as we move westward, with precipitation in southern India being least affected. By applying the absorbing aerosol loading to each region individually, we are able to explain the mechanism behind the lower sensitivity observed in India and attribute it to remote absorbing aerosol forcing applied over eastern China. Additionally, we note that the effect on precipitation is approximately linear with the forcing. The impact of doubling carbon dioxide levels is to increase precipitation over the region while simultaneously weakening the circulation. When the carbon dioxide and absorbing aerosol forcings are applied at the same time, the carbon dioxide forcing partially offsets the surface cooling and reduction in precipitation associated with the absorbing aerosol response. Assessing the relative contributions of greenhouse gases and aerosols is important for future climate scenarios, as changes in the concentrations of these species has the potential to impact monsoonal precipitation.
Reproducibility of the wet part of the soil water retention curve: a European interlaboratory comparison
Authors: Guillaume Benjamin , Aroui Boukbida Hanane , Bakker Gerben , Bieganowski Andrzej , Brostaux Yves , Cornelis Wim , Durner Wolfgang , Hartmann Christian , Iversen Bo V. , Javaux Mathieu , Ingwersen Joachim , Lamorski Krzysztof , Lamparter Axel , Makó András , Mingot Soriano Ana María , Messing Ingmar , Nemes Attila , Pomes-Bordedebat Alexandre , van der Ploeg Martine , Weber Tobias Karl David , Weihermüller Lutz , Wellens Joost , Degré Aurore
Published: June 2023

Abstract. The soil water retention curve (SWRC) is a key soil property required for predicting basic hydrological processes. The SWRC is often obtained in the laboratory with non-harmonized methods. Moreover, procedures associated with each method are not standardized. This can induce a lack of reproducibility between laboratories using different methods and procedures or using the same methods with different procedures. The goal of this study was to estimate the inter- and intralaboratory variability of the measurement of the wet part (from 10 to 300 hPa) of the SWRC. An interlaboratory comparison was carried out between 14 laboratories, using artificially constructed, porous reference samples that were transferred between laboratories according to a statistical design. The retention measurements were modelled by a series of linear mixed models using a Bayesian approach. This allowed the detection of sample-to-sample variability, interlaboratory variability, intralaboratory variability and the effects of sample changes between measurements. The greatest portion of the differences in the measurement of SWRCs was due to interlaboratory variability. The intralaboratory variability was highly variable depending on the laboratory. Some laboratories successfully reproduced the same SWRC on the same sample, while others did not. The mean intralaboratory variability over all laboratories was smaller than the mean interlaboratory variability. A possible explanation for these results is that all laboratories used slightly different methods and procedures. We believe that this result may be of great importance regarding the quality of SWRC databases built by pooling SWRCs obtained in different laboratories. The quality of pedotransfer functions or maps that might be derived is probably hampered by this inter- and intralaboratory variability. The way forward is that measurement procedures of the SWRC need to be harmonized and standardized.
Developing A Clinical Evidence Retrieval Service in Response to the COVID-19 Pandemic
Authors: Chew Wei Z. , Liew Su M. , Engkasan Julia P. , Hairi Noran N. , Ng Ka T. , CL Teng , Shunmugam Ranita H. , Yuen Choo W. , Ng Chirk J.
Published: June 2023

In response to the COVID-19 pandemic, policies, and treatment guidelines underwent rapid and frequent change. This threatened to disrupt the measured practice of evidence-based medicine (EBM), which relies on tried-and-tested interventions. The uncertainty was compounded by the overwhelming amount of misinformation disseminated via social media. Thus, arose a need for valid information to guide clinical practice. COVID-19 Evidence Retrieval Service (CERS), an evidence retrieval service piloted at a local and then rolled out at a national level, was conceived and developed to address this issue. This article describes the components and implementation of the (CERS),
The service’s objective was to review the available medical literature for the best evidence to answer COVID-19-related questions posed by practicing clinicians. Team members providing the service comprised librarians, clinicians, public health specialists, and medical students.
Multiple lessons were learned through the development and provision of CERS. Firstly, the rapid nature of the pandemic necessitated adaptations of the current practice of EBM. Secondly, all work processes were conducted online, which proved efficient and sustainable. Thirdly, Lower Middle-Income Country (LMIC) oriented services such as CERS were valid because they provided more relevant questions to resource-limited healthcare systems.
Our experience has reinforced that an integrated, evidence-based retrieval service is feasible and valuable to support healthcare workers and policymakers in making informed decisions by performing a systematic appraisal. Crucially, medical students and young healthcare professionals can play a pivotal role in setting up these services.
MODERN INTERANNUAL TRENDS IN THE THERMAL CHARACTERISTICS OF THE UPPER 1000-METER LAYER OF THE SEA OF JAPAN IN THE FIRST DECADES OF THE 21ST CENTURY
Authors:   Il’ichev Pacific Oceanological Institute, Far East Branch, Russian Academy of Sciences, ROSTOV I.D. , DMITRIEVA E.V. ,   Il’ichev Pacific Oceanological Institute, Far East Branch, Russian Academy of Sciences, RUDYKH N.I. ,   Il’ichev Pacific Oceanological Institute, Far East Branch, Russian Academy of Sciences
Published: June 2023

Based on the NOAA climate datasets and Global Ocean Data Assimilation System (GODAS), trends and regional features of interannual changes in water temperature on the surface and in the upper 1000-meter layer of the Japan Sea were analyzed. Their possible causal relationships with variations in atmospheric pressure, climatic indices, and thermal characteristics in the adjacent area of the Kuroshio energetically active zone were determined. The results of the study made it possible to describe a three-dimensional structure of the anomalies of temperature and heat content in various layers of the sea water column and to quantify a rate of warming in different parts of the study area under conditions of the current phase of global warming.
CONSIDERING CORRELATED AMV SATELLITE OBSERVATION ERRORS IN THE ENSEMBLE DATA ASSIMILATION SYSTEM
Authors:   Hydrometeorological Research Center of the Russian Federation, MIZYAK V. G. , SHLYAEVA A.V. ,   Joint Center for Satellite Data Assimilation, University Corporation for Atmospheric Research, Boulder, USA, TOLSTYKH M. A. ,   Hydrometeorological Research Center of the Russian Federation,   Marchuk Institute of Numerical Mathematics, Russian Academy of Sciences
Published: June 2023

The effect of considering correlated errors in AMV (Atmospheric Motion Vectors) satellite observations of wind in the local ensemble transform Kalman filter data assimilation system is studied. It is customary to use a diagonal covariance matrix of errors in observations taking part in assimilation. When assimilating satellite data with correlated errors, the data are thinned, and the values of diagonal elements of the error covariance matrix are often overestimated. This is accompanied by the loss of useful information about the correlation between the errors. The present study uses a different method: the elements of the error covariance matrix for AMV satellite observations are simulated using a second-order autoregressive function. It is shown that such approach reduces the root-mean-square error in initial data for a numerical weather prediction model, in particular on small scales, and improves the forecast quality. It is found that the application of the non-diagonal AMV observation error covariance matrix increases the accuracy of analysis and forecast fields.
SENSITIVITY OF OCEAN CIRCULATION MODELING RESULTS TO THE CHOICE OF ATMOSPHERIC FORCING DATA SOURCE AND GRID RESOLUTION
Authors:   Hydrometeorological Research Center of the Russian Federation, RESNYANSKII YU. D. , STEPANOV V. N. ,   Hydrometeorological Research Center of the Russian Federation, STRUKOV B.S. ,   Hydrometeorological Research Center of the Russian Federation, ZELENKO A. A. ,   Hydrometeorological Research Center of the Russian Federation
Published: June 2023

A comparison of simulations of the global ocean circulation with the NEMO/SI3 model with two types of atmospheric forcing (DFS5.2 and CFSR/CDAS), as well as with two grid resolutions (1° and 0.25°) is presented. The objective of such comparison is to substantiate a choice of a source of data on atmospheric forcing and a grid resolution for use in an operational system for the ocean state diagnosing and forecasting. It is shown that all considered simulations reproduce main large-scale ocean characteristics. The CFSR/CDAS merged meteorological dataset, which provides better agreement with actual data, is quite suitable for specifying atmospheric forcing in retrospective and operational applications of the NEMO/SI3 model, including its use as a computational core in the data assimilation system within the framework of the analysis-forecast-analysis sequential assimilation scheme.
Simulasi Putaran Kritis pada Poros dengan Beban Alat Uji Putaran Kritis Menggunakan Software ANSYS
Authors: Fitri Muhamad , Saputra Dimas Dwi
Published: June 2023

Poros merupakan sebuah komponen mesin  yang berfungsi untuk  meneruskan daya. untuk menganalisis getaran dan menentukan batas operasi yang aman dari mesin yang berputar, perlu diketahui putaran kritis. Putaran kritis pada poros dapat dipelajari dengan menggunakan alat uji putaran kritis. Sebelum alat ini digunakan untuk praktikum, terlebih dahulu dilakukan simulasi putaran kritis pada poros. Di mana fungsi dari simulasi ini yaitu mengetahui nilai putaran kritis yang selanjutnya digunakan untuk menentukan spesifikasi motor yang sesuai putarannya harus di atas putaran kritis sehingga alat yang di desain dapat menampilkan terjadinya putaran kritis. Pemodelan yang digunakan yaitu disk serta 2 macam poros dengan panjang 600mm dan 1000mm menggunakan parameter kecepatan sampai 6000 RPM. Untuk pengujian hasil poros diberikan beban/disk di tengah poros panjang 600mm memiliki kecepatan putaran kritis 2771,5 RPM sedangkan panjang poros 1000mm memiliki kecepatan putaran kritis 1174,6 RPM. Maka dengan hasil simulasi dan teori tersebut, alat uji putaran kritis harus menggunakan spesifikasi motor dengan kecepatan 4080 RPM supaya alat tersebut dapat menampilkan putaran kritis.
Perencanaan Lubang Resapan Biopori Pada Daerah Permukiman yang berpotensi Genangan
Authors: Azizah Barrorotul , Dhiniati Fameira , Pratama Nando
Published: June 2023

Limpasan permukaan merupakan air yang muncul diakibatkan oleh tingginya curah hujan yang jatuh pada suatu kawasan. Limpasan yang mengakibatkan genangan terjadi selain buruknya sistem drainase dan kurangnya ruang terbuka hijau (RTH), genangan juga disebabkan oleh kurangnya kepedulian masyarakat dalam menjaga lingkungan. Seperti yang terjadi pada kawasan Jalan Mayor Ruslan Kota Pagar Alam yang merupakan Kawasan perumahan dan permukiman, serta menjadi jalur utama perkotaan. Kawasan ini sering terjadi genangan pada saluran drainase dikarenakan kesadaran masyarakat yang membuang sampah, hal ini yang dapat memperburuk aliran limpasan sehingga dapat mengakibatkan genangan di Kawasan tersebut. Berdasarkan masalah tersebut maka dibutuhkan adannya perencanaan Lubang Resapan Biopori dalam mengurangi adanya genangan Pada Kawasan Jalan Mayor Ruslan. Tujuan dari penelitian ini adalah Perencanaan lubang resapan biopori di lokasi kawasan yang berpotensi rawan genangan pada Jalan Mayor Ruslan Kota Pagar Alam. Metode yang digunakan dalam penelitian ini yaitu analisis curah hujan dengan menghitung frekuensi curah hujan, menghitung intensitas curah hujan dengan metode mononobe, pengukuran laju infitrasi dengan menggunakan alat single ring infiltrometer sehingga menghasilkan kurva horton, dan menggunakan perhitungan rumus Lubang Resapan Biopori untuk merencanakan jumlah lubang yang dibu. Berdasarkan hasil penelitian perencanaan Lubang Resapan Biopori diperoleh dimensi dengan diameter pipa 15 cm (0,15 m) dan kedalaman 100 cm (1 m) dengan jumlah Lubang Resapan Biopori 13 buah dengan jarak per 30 meter. Perencanaan lubang resapan biopori dengan ukuran diameter pipa 15 cm dan kedalaman 100 cm sepanjang jarak 400 meter diberikan 1 lubang resapan biopori pada setiap 20 cm. Berdasarkan rekomendasi dengan adanya Perencanaan Lubang Resapan Biopori pada Kawasan Jalan Mayor Ruslan bahwa satu buah lubang resapan biopori sepanjang 400 meter dapat mereduksi debit limpasan sebesar 5,16%.
Que o giro se faça roda: o jornalismo antirracista das mídias negras como movimento circular e decolonial
Authors: Oliveira de Andrade Alice , Furtado Veloso Maria do Socorro
Published: June 2023

Neste artigo, refletimos sobre o jornalismo antirracista construído pelas mídias negras brasileiras como um movimento circular e decolonial. O objetivo é discutir a importância desses grupos que reivindicam espaços de fala distantes da precarização e subalternização fundadas pela colonialidade histórica. Em vez disso, buscam fundar novas matrizes de visibilidade para pessoas negras, contestando a hegemonia da mídia hegemônica e valorizando vozes, corporeidades e experiências afrodiaspóricas. Reunimos contribuições teóricas de Bernardino-Costa, Maldonado-Torres e Grosfoguel (2019), Ballestrin (2013), Borges (2012), González e Hasenbalg (2022), entre outros autores e autoras.
Carta para ELAS
Authors: Gorini Oliveira Paula
Published: June 2023

Este trabalho, de caráter ensaístico, tem por objetivo compartilhar uma experiência de observação participante na produção do podcast experimental Rádio-Carta Mulher (RCM), produzido com cinco mulheres atingidas pelo sistema prisional, em 2022. Em formato experimental, o podcast tem como foco a comunicação de mulheres que foram estigmatizadas e socialmente excluídas por suas passagens pelo cárcere. Neste ensaio será apresentada a metodologia epistolar como forma de acessar narrativas de histórias de vidas, e do podcast RCM como prática de comunicação não-hegemônica. E, também, será articulado um debate com base em autores decoloniais para pensar as especificidades de mulheres estigmatizadas por um sistema de produção de morte, que é o sistema prisional.
Entrevista
Authors: Rovida Mara , Patrício Edgard , Santana Luan , Lima Verônica Maria Alves
Published: June 2023

Convidamos Gabrielle Guido, Brenda Gomes, ambas do coletivo Entre Becos, em Salvador, e Aline Rodrigues, da Periferia em Movimento, em São Paulo, para uma prosa sobre algumas questões geradoras que atravessam o cotidiano das iniciativas de jornalismo independente. A relação com a decolonialidade deixamos para que nossa(o)s leitora(e)s percebam, a partir do diálogo que se estabelece pelas vivências de cada uma. Foi um prazer conversar com vocês, e agradecemos demais a colaboração que deram à discussão!
MINIHOT´SS.A.S
Authors: Cano Bustos Andrea Estefanía , Rodríguez González Jorge Arturo , Rubiano Sánchez Jessica Andrea
Published: June 2023

En este documento encontrará los aspectos más relevantes e importantes en la creación y desarrollo de la empresa MINI HOT’S S.A.S., explicando brevemente según cada capítulo: CAPITULO 1: Desarrollo inicial de la idea de negocio con los planteamientos lógicos para levarla a la realidad, iniciando una empresa teniendo en cuenta que aspectos se pueden tomar como ventajas y cuales como posibles desventajas y resolviendo cuestionamientos básicos como lo son: ¿Qué se quiere hacer?, ¿Qué se debe hacer? y ¿Por qué se debe hacer? CAPITULO 2: Clasificación empresarial de acuerdo a la actividad o giro, régimen jurídico, origen de capital y tamaño de la empresa. CAPITULO 3: Desarrollo de los entornos: Jurídico, económico, político, social y geográfico de la compañía. •CAPITULO 4: Desarrollo de los recursos con los que cuenta la compañía, desde el mercado que comprende a los clientes, la competencia y la calidad, los recursos: financieros, humanos, materiales, tecnológicos y de planta y equipos de oficina. CAPITULO 5: Planteamiento y desarrollo de las premisas de planeación, basadas en la definición de los objetivos y las estrategias. CAPITULO 6: Desarrollo de la planeación estratégica, basado en la definición de la misión, visión, filosofía, objetivos, políticas, planes y presupuesto. CAPITULO 7: Planteamiento de las áreas funcionales de la compañía, áreas: mercadeo y ventas, recursos humanos, financiera, producción y sistemas; definición y alcance de las mismas CAPITULO 8: Organización de la compañía, donde son establecidos y jerarquizados los cargos por medio del organigrama. Perfiles del cargo, de acuerdo a los cargos definidos en el organigrama, planteamiento de propósito del cargo, responsabilidades del trabajador, competencia, funciones, responsabilidades, autoridad, comunicación y definición de jefe directo. CAPITULO 9: Mercadotecnia, definición y desarrollo de mezcla de marketing (las cuatro P’s), comunicación y distribución.
El espacio-escolar en Émile Durkheim
Authors: Machuca Téllez Gerardo
Published: June 2023

La obra de Émile Durkheim representa una significativa contribución a la sociología y a la educación. Su aporte en la comprensión de las relaciones que se establecen entre sociedad y educación para la configuración de la urdimbre social logró resaltar las características socio y espacio-temporales como elementos determinantes dentro de los ideales de hombre y sociedad. En este sentido, el espacio-escolar surge como un vehículo de socialización de estos ideales, convirtiéndolo en un constitutivo y constituyente de sus transformaciones. Con base en lo anterior, en este artículo se presentan algunos elementos del pensamiento de Durkheim en lo que respecta a la educación; esto con el fin de resaltar las relaciones entre esta categoría y el espacio-escolar. Para esto, se toman como referencia algunas de sus obras, así como las de otros estudiosos sobre el tema.
La cuestión de género en los acuerdos de paz: ¿Colombia, una nción preparada para la construcción de paz transformativa y emancipatoria?
Authors: Wynter Sarmiento Blanca Consuelo
Published: June 2023

En este artículo se presenta una propuesta de análisis sobre cómo la perspectiva de género ha sido uno de los elementos de discusión más importantes en el marco de los distintos procesos de paz que se han consolidado en el mundo, aunque centra su atención en el colombiano –desde el inicio de las campañas promotoras en el plebiscito hasta la firma del Acuerdo final intervenido por los actores políticos–. Esta revisión permite comprender de qué manera el enfoque de género es sustrato para dos modelos de construcción de paz (el transformativo y el emancipatorio) al desarrollar un ejercicio de prospectiva frente a la viabilidad de su implementación o no en el contexto nacional.
Una mirada interseccional e incluyente de la mujer y su empoderamiento en los procesos sociales
Authors: Pinzón Rodríguez Andrés Felipe
Published: June 2023

Cuando se habla del empoderamiento de la mujer en las sociedades contemporáneas, resulta importante tener una visión amplia basada en la equidad de género, el respeto por el papel de la mujer en las sociedades y la manera en la que, en el hemisferio occidental, se comprende este rol, pues ha pasado del ostracismo al protagonismo de múltiples transformaciones. La metodología planteada se basa en la contextualización de literatura. Desde ahí, se aportan, en términos de pertinencia, diferentes elementos de trabajo basados en la equidad de género, así como en sus avances y en ambigüedades provenientes de las diferentes relaciones entre los hombres y las mujeres que se encuentran inmersos en un sistema social. Por lo tanto, al hacer la revisión se encontrará una realidad social de alta envergadura para los procesos de integración, que permiten entender estas dinámicas y su relación con el desarrollo económico. Por esto, se requieren procesos de inclusión de las mujeres en escenarios relevantes, que le permitan hacer más presencia en la vida pública y menos en la vida privada.
Breve historia de Zipaquirá, un pueblo rebelde
Authors: Ortega Londoño Cristian Camilo
Published: June 2023

En este artículo se presenta un breve recorrido por la historia de Zipaquirá, un municipio de la sabana de Bogotá, en Colombia. Este recorrido nace de un proceso de sistematización de experiencias realizado a partir de un trabajo de investigación desarrollado con una organización social de esa ciudad. De igual manera, dentro de esta sistematización se realiza la construcción de un marco contextual sobre la historia de la ciudad desde la época prehispánica, hasta la actualidad. Hasta el momento no ha sido publicado un marco contextual de esas características, a pesar de que se considera de relevancia en la construcción de una historia que pocos conocen y que poco se ha divulgado.
El nuevo periodismo deportivo: antecedentes, actualidad y tendencias
Authors: Zambrano Ayala William Ricardo
Published: June 2023

En el presente artículo de revisión, se presentan los resultados de una investigación acerca de los nuevos escenarios de acción que se abrieron para el periodista deportivo con la transformación de los medios de comunicación y la convergencia digital. Para ello, se acogió el método cualitativo para describir, argumentar e interpretar el fenómeno, y se realizó una indagación bibliográfica de libros, artículos científicos y bases de datos sobre las siguientes categorías de estudio: periodismo deportivo, convergencia tecnológica, contenidos y rutinas periodísticas. La revisión de los antecedentes permite constatar que hasta el momento son pocas las investigaciones sobre el tema a nivel global y todavía menos en Colombia.
El branding desde lo participativo: una mirada hacia la construcción social y la transformación cultural
Authors: Mora Gustavo
Published: June 2023

En este artículo de reflexión se busca ofrecer una mirada diferente sobre los aportes del branding y su impacto social, y establecer que el concepto de marca se gesta en una perspectiva multidisciplinaria dirigida hacia de la imagen y la comunicación, elementos clave de la construcción de identidad. Con este fin, se estudian algunos de los diferentes elementos que intervienen en la definición de una idea colectiva y su territorialidad: la visión poseedora de un colectivo, el abordaje del concepto branding –y cómo este se nutre de los diferentes elementos coyunturales y sociales–, su relación con los diferentes aportes a la construcción cultural de una organización o colectivo, entre otros. La explicación también se orienta desde la imagen y la sensorialidad (color, sonidos, letra, etc.), y los valores que representan.
Hacia una metafórica del trabajo literario en relación con el orden social
Authors: Castillo Quintana Guillermo Andrés
Published: June 2023

Este documento presenta una primera aproximación a la que llamo “metafórica del trabajo artístico”: un campo semántico de metáforas y tropos retóricos que se han convertido en algunos de los conceptos, categorías estéticas y sistemas explicativos de la crítica y la teoría literarias del siglo XX. Particularmente, de ella interesa su función axiológico-valorativa en dos sentidos: 1) por el hecho de erigirse como un lenguaje para reflexionar sobre la literatura y, 2) por considerar que también se trata de una toma de consciencia histórica del oficio que la crítica y la teoría desarrollan dentro del orden social moderno.
Fortalecimiento del aprendizaje por proyectos a través del diseño como estrategia de gestión
Authors: Hernández Olave Juan Sebastián
Published: June 2023

El diseño es una disciplina que, desde su génesis, ha tenido como base epistemológica el proyecto, considerado como el componente holístico del cual se obtienen productos que deben estar integrados. Desde esta postura, el proyecto se entiende como un proceso cíclico, en el que, con cada fase cumplida, existen aprendizajes que retroalimentan los avances y generan experiencias, con una visión sistémica y nunca lineal. Entonces, es posible que, una vez se hayan avanzado varias fases, se deba volver sobre el proceso para reinterpretar y replantear los avances logrados. El proyecto se asume como un proceso de planeación con cumplimiento de metas con un enfoque lineal en el tiempo.

La CUN realiza sus procesos de enseñanza desde la formación por proyectos. En la práctica, y desde las estructuras curriculares, se han generado retos para la aplicación de esa estrategia en otros escenarios, pues primero se debe comprender el concepto del proyecto para posteriormente planear su ejecución.

La experiencia de la CUN se enfoca en programas con énfasis en diseño, en particular, el programa de Diseño Gráfico, con una estructura llamada proyecto integrador, que ha permitido lograr una serie de aprendizajes, presentados en este artículo.
Música para armonizar diferencias
Authors: Díaz Vargas Johan Gustavo
Published: June 2023

El presente artículo da cuenta del proceso desarrollado durante la ejecución del proyecto “Música para armonizar diferencias”, dirigido a estudiantes con discapacidad leve y moderada entre 15 y 18 años del Centro Crecer, ubicado en la localidad de Usaquén en Bogotá D. C. Su objetivo general fue propiciar un ambiente virtual de aprendizaje (AVA) y crear el Método Solveman para la enseñanza de la música. El proceso de implementación se determinó mediante una investigación de enfoque cualitativo de tipo etnográfico virtual y el diseño metodológico respondió a cinco fases. En resumen, el diseño del aula virtual se caracterizó por la aplicación de técnicas de aprendizaje con base en el uso de colores, lo que le permitió a la población con discapacidad identificar las notas y otros elementos que componen el discurso musical.
Una compleja noción entre el arte que banaliza y el de la verdadera denuncia
Authors: García Murcia Julián David
Published: June 2023

En este artículo se analiza el arte que se produjo después de una de las peo­res masacres que ha vivido Colombia a lo largo de su historia, la masacre de El Salado, cometida en el corregimiento Villa del Rosario-El Salado, ubi­cado en el municipio del Carmen de Bolívar, en el sur del departamento de Bolívar. Entre el 18 y el 21 de febrero del año 2000, este corregimiento fue tomado por las Autodefensas Unidas de Colombia (AUC), al parecer, con el apoyo de la fuerza pública de la región. Más allá de que, como esta, fueron muchas las masacres que se han cometido a lo largo y ancho de nuestro te­rritorio, sin duda, la perpetrada en El Salado reviste una gran importancia en la historia de la violencia de nuestro país y, por este motivo, se toma este caso para reconocer los puntos clave a la hora de abordar la manera como, a través del arte, los individuos reaccionan y luchan contra la impunidad.
Discurso poético y formación de los ciudadanos en República x
Authors: Rojas Galván Daniela
Published: June 2023

Este artículo se centra en la crítica de Platón al arte mimético en República x, de la que deriva la expulsión de los poetas de la ciudad. Esta crítica presenta ataques de corte epistémico y otros dirigidos a los efectos de las artes mi­méticas. No obstante, en otros pasajes de República, encontramos que Platón tiene en estima a la poesía como método educativo, lo que no concuerda con la visión de x. Para explicar esa tensión, sigo la lectura de República según la cual Platón solo expulsa a cierto tipo de poesía, a saber, a los trágicos, puesto que no tienen conocimiento de las obras que producen, pero esto no elimina la relevancia central que tiene el arte en la formación de los ciudadanos.
Evaluasi Kapabilitas Sistem Informasi Pasien ICU dan HCU Menggunakan COBIT 5 dengan Domain BAI
Authors: Fernando Erick , Jullend Gatc  , Yuhefizar Yuhefizar
Published: June 2023

The hospital's Intensive Care Unit (ICU) and High Care Unit (HCU) systems are very important systems and are always used, so it is necessary to know the extent of their performance. Thus, the study aims to provide reference for xyz hospital regarding the condition (performance) of the current ICU and HCU patient systems. COBIT 5 is an information system capability evaluation framework with the build, acquire and implement (BAI) domain. Domain BAI focuses on developing, acquiring, and implementing information systems, applications, and services. It covers the entire IT project life cycle, starting with the planning and requirements gathering phases and continuing through the design, development, testing, and deployment phases. This study also uses qualitative approach with literature studies and quantitative approach for data analysis to measure capability level. Research respondents were heads and staff from the IT, ICU, and HCU divisions. The results of this study describe the level of capability achieved by hospitals in the BAI Domain, with an average score of 3.30 at the established level. This level illustrates that the application of information technology can achieve process results that are in accordance with the wishes of raft xyz management. This stage also illustrates that the xyz hospital has an information technology process that has been standardized thoroughly to achieve all processes. The results of this evaluation can also be guideline for the xyz raft house to make improvements and improve the performance of the ICU and HCU patient systems in meeting the needs of intensively treated patients.