bluuebunny/crossref_metadata_2025_split huggingface dataset:
Infections caused by <em>Elizabethkingia meningoseptica</em> in a tertiary care centre - A retrospective study
Authors: Mishra Swati , Dash Sumesh Kumar , Rout Bidyut Prava , Sahu Kundan Kumar , Otta Sarita 
Published: August 2023

Elizabethkingia meningoseptica (EM) has emerged as important opportunistic pathogens that can cause sporadic nosocomial outbreaks as well as infections in neonates. They are known for their multidrug resistance and their unique susceptibility pattern. Present study is a retrospective single centre study where the sensitivity pattern and comorbidities associated with infection by this organism is systematically being noted. All samples received in the microbiology lab and yielding EMas identified by automated method (Vitek2, Biomerieux) from October 2020 to September 2021 were included in the study. The strains were re-identified to species level by polymerase chain reaction amplification of 16s r RNA gene.All samples where clinical significance could not be proven and repeat samples from same patient were excluded from analysis. The case sheets of the patients were collected from record section and analyzed for presence of various risk factors.In this study 57 patients were included withmean age of patients being 47.12 and most of the patients belonged to 51-60 age group (22.81%).Most common sample of isolation was blood (57.89%) followed by respiratory samples (26.32%). Majority (89.28%) of patients were in ICU and most of the infections were hospital acquired (92.9%). Mean duration of ICU stay before isolation was 13.8±8.07. Other major associated factors were diabetes mellitus (42.86%), high dose steroid use (57.14%) and post COVID pneumonia (35.71%). The isolates were resistant to betalactams and combination agents; minocycline (98.2%) followed by cotrimoxazole (47.2%) and levofloxacin (45.6%) and ciprofloxacin (35.1%) were the most useful antibiotics.EM is an emerging nosocomial pathogen in ICU setting. Clinicians and microbiologists need to be aware of its unique sensitivity pattern. In contrast to previous studies we find a high degree of resistance to tigecycline and piperacillintazobactam. Thus in planning combination regimen this should be kept in mind.
Investigation of the autorotation stability of a turbofan engine with a detached fan blade
Authors: Filipkovskij Sergey , Chigrin Valentin , Soboliev Alexandr , Vasilevskij Yevgeny , Topal Nikolay , Filipkovska Larisa 
Published: August 2023

One of the requirements for the aircraft being designed is the ability to continue flying and landing if one engine fails. One of the calculated cases of engine failure is the separation of the fan blade. This phenomenon causes large vibrations in both the engine itself and the aircraft structure. A calculation model and method for studying engine oscillations with damage in the form of blade separation have been developed. Numerical studies of the oscillations of the engine suspended on a pylon were conducted. The operation of an engine with an unbalance of the fan after switching off during the transition to autorotation is considered. Numerical simulation was performed using the ANSYS Workbench package. The front supports of the rotors are ball bearings installed in the elastic elements of the "squirrel cage". Ball bearings are modeled as a rigid hinge. There are two thin-walled shells, which are intermediate power elements outside the elastic element. With an increase in the imbalance of the fan rotor, the gap in the oil damper closes, the damper housing sits on the shells, switching on their rigidity to work. Thus the support stiffness characteristic is bilinear. The stiffness coefficients of the elastic element "squirrel cage" and the shells of the front support are determined by numerical simulation. The fan rotor is modeled as a rigid body on bearings. The motor stator is modeled by a rigid body on an elastic suspension. The pylon and elements of the elastic suspension of the engine are modeled by beams of variable section, working simultaneously in tension, torsion, and bending. Numerical analysis of the transient oscillations of the D-436-148FM engine mounted on the pylon of the AN-178 aircraft was performed. The amplitude-frequency response of oscillations is obtained in the frequency range below the fan speed in the cruising mode. The stability of engine oscillations at a resonant frequency close to the autorotation frequency has been studied. The results of the numerical simulation are presented in the form of diagrams. Orbits of the centers of gravity of the fan rotor and the motor casing in the resonant mode are constructed. Poincaré mappings of oscillations of the same points of the structure are also constructed.
Ідентифікація параметрів математичних моделей та визначення діагностичних ознак
Authors: Hung Tran Manh 
Published: August 2023

In this article, the object of research is two main units of the AR20N aggregate – electrohydraulic amplifier (EHA) and power cylinder (PC). Detection of the occurrence and development of faults in them will be considered on the basis of the identification of parameters of the developed mathematical models. The main objectives of the research were to identify the parameters of mathematical models of EHA and PC using different steps of time quantization, determination of the optimal step of time quantization for numerical integration of differential equations; determination of diagnostic features that have the most probable influence on the operation of aggregate units at the occurrence of various faults. For achievement of the set objectives the following tasks were solved: mathematical models of EHA, PC, and simulation model of the aggregate research on the test bench were developed; identification of parameters of mathematical models of EHA and PC by the method of least squares (MLS) was carried out; the permissible step of time quantization was determined; upper and lower permissible limits of the identifiable parameters for a serviceable aggregate were determined; a methodology for determining the diagnostic features that are most probable to determine the emerging faults of the aggregate has been developed. Methods are used for this purpose: analytical, numerical, statistical, hydraulic systems theory, and system identification theory. The following results were obtained: differential equations describing the displacements of the distributive spool (DS) of the EHA and the output link (OL) of the PC; algorithms for identifying the parameters of mathematical models by MLS; the permissible step of time quantization was determined; and a technique for determining the diagnostic features using the Shewhart diagnostic chart for the parameters of mathematical models was developed. The scientific and practical novelty of the obtained results consists of the following: mathematical models of EHA and PC of the aggregate have been developed; simulation model of the aggregate on the test bench has been developed; simulation of various faults of the aggregate units has been carried out and identification of parameters of mathematical models of these units has been carried out; changes of estimations of parameters of mathematical models of EHA and PC depending on changes of each influencing factor have been obtained; upper and lower permissible limits of parameters and average values of these parameters have been determined; diagnostic features that are most probable to influence aggregate performance have been determined. It is shown that time quantization step D t = 0.01 (c) provides the determination of DS and OL displacements with errors of 1.914×10-6mm and 2.157×10-5 mm.
Вплив температурного перепаду на ступінь підвищення тиску у вентиляторному контурі турбовентиляторної приставки ГТД
Authors: Maiboroda Roman 
Published: August 2023

The subject of this study is the working process in a turbofan attachment of a gas turbine engine. The object of study is the fan part of the impeller of a turbofan attachment. The aim of this study was to evaluate the effect of temperature difference in a two-tier impeller on the degree of pressure increase in the fan part of a two-tier impeller of a turbofan attachment of a three-circuit engine. To achieve this goal, the following tasks were solved: to simulate the flow in a turbofan attachment; to calculate the dependence of the degree of pressure increase in the fan part of the impeller of the turbofan attachment on the Mach number for the operating mode at altitudes of 0 km, 9 km and 11 km; to evaluate the temperature difference in the two-tier impeller of the turbofan attachment. The study was carried out by the method of numerical experiment. Results: The dependence of the degree of pressure increase of the fan circuit of the turbofan attachment on the Mach number at the inlet is obtained, taking into account the effect of hot gases of the turbine circuit of the turbofan attachment. It is shown that the flow of hot gases affects the degree of pressure increase in the fan circuit. The presence of the turbine part of the two-tier impeller leads to a slight deterioration in the characteristics of the fan part. The degree of pressure increase is reduced by 0.2 ... 4.8 %. The greatest influence is manifested in the operating mode H = 11 km. Visualization of the flow velocity field in the fan part of the turbofan unit showed that during the operation of the turbine circuit, the nature of the leakage in the fan part changes by approximately 50% of the blade height. An increase in temperature contributes to the intensification of the energy of the boundary layer around the lower part of the blade of the fan circuit, which has a positive effect on the reduction of zero velocity zones during the flow. Scientific novelty and practical significance: new data were obtained on the effect of temperature difference in a two-tier impeller on the degree of pressure increase in the fan part of a two-tier impeller of a turbofan attachment of a three-circuit engine. The results obtained can be used to optimize the turbofan attachment of a gas turbine engine.
Influence of carbon nanoparticle inoculation on the structure of ML5 casting magnesium alloy
Authors: Makovskyi Spartak , Balushok Kostyantyn , Obnosov Kyryl , Greshta Viktor , Shalomeyev Vadym , Tkach Daria 
Published: August 2023

The object of this study is to investigate the structure of cast magnesium alloy (Mg-Al-Zn) inoculated with nano particles of different allotropic forms of carbon. The aim of this study is to improve the processability and quality of critical load bearing magnesium alloy part castings. The tasks of the study are: attainment of efficient control of the alloy structural features by introduction of incremental additions of carbon nano particles; determination of the relationship between the quantity of the added inoculating carbon agent and α - solid solution grain size; determination of the influence of allotropic forms of carbon on the morphologic characteristics of the intergranular borders and the eutectoid (a+Mg17Al12); and comparative analysis of the phase composition of the standard ML5 alloy and the experimental alloy ML5 inoculated with carbon black, nanographite, and single-wall carbon nanotubes. The phase composition was determined by X-ray diffraction analysis using copper radiation. Micro X-ray spectral analysis was performed. The following findings were obtained. Using an optical microscope α – solid solution grain size was measured in the standard and inoculated alloy. In the samples of the alloy variants inoculated with 0.1 % wt. of carbon black, nanographite, and single-wall carbon nanotubes, the grain size was reduced by appox. 50 % compared with the standard alloy. In the samples of the alloy inoculated with 0.1 % wt. of nanographite and single wall carbon nanotubes, eutectoid (a+Mg17Al12) precipitates along the grain boundaries were thinner than those in the standard alloy samples and those inoculated with carbon black. X-ray diffraction analysis revealed no new phase formation. The X-ray diffraction patterns of the alloy samples with nanographite and nanotubes display weak peaks of free carbon, which may indicate the presence of free carbon in small quantities in the structure. The scientific and practical originality of the obtained results consists of the following: a technology of inoculation with incremental additions of allotropic forms of nano carbon, namely carbon black, nanographite, and single-wall carbon nanotubes, has been tested on a standard cast magnesium alloy (Mg-Al-Zn system) in an environment similar to the industrial production of critical magnesium cast components. It has been shown that the introduction of nanocarbon in a quantity of 0.1 % wt. can have a beneficial effect on the structural characteristics of ML5 cast magnesium alloy with no change in its phase composition. Nanographite and single wall carbon nanotubes with a regular structure contribute to the formation of thinner intergranular boundaries than amorphous carbon black.
PENINGKATAN PERENCANAAN KARIER MELALUI BIMBINGAN EKSPLORASI KARIER PADA SISWA SMA
Authors: Rafa Sakina Mifta Wahyu 
Published: August 2023

Penelitian ini bertujuan untuk mengetahui efektivitas peningkatan perencanaan karier melalui pemberian bimbingan karier pada siswa SMA. Penelitian ini menggunakan pendekatan eksperimen dengan jenis penelitian single case experimental design. Perbandingan dalam penelitian single case experimental design ini tidak dilakukan antara individu maupun kelompok namun dibandingan pada subjek yang sama dalam kondisi yang berbeda yaitu antara konsisi baseline dan kondisi intervensi. Teknik yang digunakan untuk mengumpulkan data yaitu dengan teknik observasi, wawancara dan tes psikologi. Subjek dalam penelitian ini adalah siswa SMA kelas XI yang mengalami kebingungan karier. Intervensi dilakukan selama 5 hari dan hasil intervensi menunjukkan adanya perubahan dari kondisi baseline ke kondisi intervensi. Pada kondisi baseline subjek belum mengenal dirinya sendiri, belum memahami jenis-jenis fakultas dan jurusan yang ada di bangku perkuliahan dan tidak dapat membuat perencanaan karier yang cocok dengan dirinya. Pada kondisi intervensi subjek dapat mengobservasi diri, mengenal dirinya sendiri dan mampu mengevaluasi diri berdasarkan potensi dan kepribadian yang dimiliki sehingga dapat membuat perencanaan karier yang cocok dengan kondisi dirinya.
Kata Kunci: Kebingungan Karier, Bimbingan karier, Eksplorasi Karier, Siswa SMA
Pemberdayaan UMKM Sebagai Penguatan Ekonomi Lokal di kabupaten Jombang
Authors: Adah Mas Adah 
Published: August 2023

Penelitian ini bertujuan untuk mengetahui model pemberdayaan Usaha Mikro Kecil Menengah (UMKM) sebagai penguatan ekonomi local di kabupaen Jombang. Penelitian ini menggunaakan metode deskriptif kualitatif . Analisis data menggunakan analisa kualitatif miles dan huberman yaitu 1. Reduksi data (2) penyajian data dan (3) penarikan kesimpulan. Hasil yang diperoleh bahwa Berdasarkan data penelitian dan pembahasan tentang pemberdayaan UMKM sebagai penguatan ekonomi Di kabupaten jombang, yang sudah dilakukan oleh peneliti maka telah disimpulkan sebagai berikut: Model pemberdayaan UMKM sebagai penguatan ekonomi local di kanupaten Jombang adalah penyediaan sarana prasarana tempat berjualan dengan merelokasi dari alon alon jombang kecluster “Kuliner Jombang” di jalan Dr Sutomo. Adapun bentuk dari model penguatan dengan penyediaan sarana prasarana oleh pemerintah kabupaten jombang adalah: (1) Tempat strategis (2) Pngelompokan Usaha Kuliner (3) Tarif Retribusi yang Terjangkau (4) Pemberlakuan jam penutupan jalan bagi kendaraan Roda 4
Pengaruh Penggunaan Media Sosial Facebook Terhadap Motivasi Belajar Mahasiswa Program Studi Pendidikan Matematika
Authors: Nahak Arkianus 
Published: August 2023

Penelitian ini bertujuan untuk mengetahui pengaruh media sosial facebook terhadap motivasi belajar mahasiswa Program Studi Pendidikan Matematika Fakultas Ilmu Pendidikan Universitas Timor. Jenis penelitian yang digunakan dalam penelitian ini termasuk jenis kuantitatif. Variabel bebasnya adalah media sosial facebook dan variabel terikatnya yaitu motivasi belajar mahasiswa. Penelitian ini dilakukan di Program Studi Pendidikan Matematika Fakultas Ilmu Pendidikan Universitas Timor. Subjek penelitian ini adalah mahasiswa Program Studi Pendidikan Matematika dari 4 angkatan yaitu angkatan 2016, 2017, 2018 dan 2019 berjumlah 410 orang dan diambil dengan teknik purposive random sampling berjumlah 108 orang. Data diperoleh dari kuisioner, teknik analisisnya menggunakan Uji t (Model Regresi) besar nilai konstanta a sebesar 49, 550 artinya jika media sosial facebook (X) = 0, maka motivasi belajar Y = 49, 550, koefisien regresi variabel media sosial facebook (b) bernilai sebesar 0, 294 artinya jika media sosial facebook bertambah satu – satuan maka motivasi belajar juga bertambah sebesar 0, 294. Hubungan variabel X dan Y positif artinya semakin tinggi mengakses media sosial facebook, maka semakin baik motivasi belajar mahasiswa, dari hasil uji t (Model Regresi) tersebut dapat disimpulkan bahwa media sosial facebook pengaruh positif terhadap motivasi belajar mahasiswa Program Studi Pendidikan Matematika.
Persepsi Siswa SMA Fides Kefamenanu terhadap Pelatihan Ekstrakurikuler Jurnalistik
Authors: Sahan Meylisa Yuliastuti , Kamlasi Imanuel , Sahan Anselmus , Wisrance Maria Wihelmina 
Published: August 2023

Abstract
The journalism training program which was launched through community service activities at SMAK FQI Kefamenanu in August 2022 aims to train them how to write news, find sources and publish it on the school bulletin. To find out their perceptions (N=27) about journalism and the training, at the end of the activity they were presented with a questionnaire containing 25 questions. The 25 questions relate to three main issues, namely their reasons for choosing journalistic activities, their understanding of journalism and the implementation of journalism extracurriculars. The results of the data analysis revealed that they had a positive perception (235 respons or 87%) of extracurricular journalistic activities at their school, understood the world of journalism (98 respons or 38% agreed) and agreed with extracurricular activities (103 respons or 38%) both at school and journalistic training conducted by the Unimor Service Team for them. Therefore, journalistic training should be made an important part of all extracurricular and curricular activities so that their interests, talents and abilities can really be developed properly.
Keywords: perception, SMA Fides, training, journalism
Risk Factors of Community-Acquired Pneumonia Among Under-Five Children in a Tertiary Level Hospital in Rajshahi
Authors: Ara Chaman , Sharmin Laila Shamima , Begum Fardoushi , Sarker Sanchita , Hossain Md Belal , Yeasmin Shahida , Mia Md Sanaul Haque 
Published: August 2023

Introduction: Community-acquired pneumonia (CAP) top the list of causes of under-five children mortality worldwide. Therefore, properly assessing and controlling these risk factors may help decrease the morbidity and mortality in under-five children suffering from CAP in Bangladesh and thereby help improve the quality of life of our future generation.
Objective: To assess the risk factors of CAP among under-five children ( 2-59 months ) in a tertiary-level hospital in Rajshahi.
Materials and methods: This case-control study was carried out in the Department of Pediatrics and EPI Center of Rajshahi Medical College Hospital, RMCH, from January 2017 to December 2018 to determine the risk factors of CAP among children under five. For this study, 246 children aged two months to 59 months were selected by purposive sampling. One hundred twenty-three were cases that were taken indoors, and 123 were healthy controls taken from the outpatient department & EPI center. After taking written consent from guardians, history was taken, and a physical examination was done. All information was recorded in a predesigned data sheet. The chi-square test and odds ratio were used to demonstrate significance.
Results: Among 246 children, more patients of both groups were male and came from rural areas. Cases were predominantly under 12 months and came from lower socioeconomic status. A statistically significant association was found between social class and CAP (<0.001); the father's literacy was inversely related to CAP (p-value <0.001). Types of housing, living room ventilation, overcrowding, fuel and cookers used for cooking, parental smoking, malnutrition, history of diarrhea and presence of anemia, prematurity, and low birth weight were significantly associated with CAP (p-value <0.05).
Conclusion: Proper assessment of these risk factors and controlling them may help decrease the morbidity and mortality in under-five children suffering from CAP in Bangladesh and thereby help improve the quality of life of our future generation.
TAJ 2022; 36: No-1: 23-31
Role of Plastic Surgery in the Management of Diabetic Foot Ulcer
Authors: Nazneen Most Afroza , Choudhury Mohammad Ali 
Published: August 2023

This article introduces plastic surgeons' various roles in managing diabetic foot ulcers. The role of plastic surgeons is multidimensional and, of course, challenging. Sometimes, the healing process of diabetic ulcer is as simple as only adequate wound care. Sometimes, the ulcer needs reconstruction through a skin graft or flap coverage. Unfortunately, some patients need amputation or disarticulation. Again, plastic surgeons are maximizing patients' future movement ability in the case of amputation. Thus, an experienced plastic surgeon can provide an optimum lifestyle to the diabetic patient.
TAJ 2022; 36: No-1: 55-61