bluuebunny/crossref_metadata_2025_split huggingface dataset:
Medication Adherence in Post Myocardial Infarction Patients at Shahid Gangalal National Heart Centre
Authors: Giri Madhu , Shakya Rajani , Bista Durga , Manandhar Aastha , Giri Dikshya 
Published: June 2022

Background and Aims: Medication adherence among Post myocardial infarction (MI) patient is suboptimal all over the world. Although significant advances have been made in the diagnosis and management of Acute Myocardial Infraction, it is still a major cause of morbidity and mortality worldwide and significant therapeutic challenges to the society. The purpose of the study was to study the medication adherence and to identify the effect of adverse drug reaction (ADR) on medication adherence.
Methods: The study was a single center, prospective study carried out in Shahid Gangalal National Heart Centre (SGNHC) in Nepal. The enrolled patients were followed up at 6th weeks after discharge in outpatient department (OPD) visit. Patients were interviewed with Morisky Green Levine (MGL) adherence scale questionnaire to identify medication adherence. The ADR was assessed. Data were analyzed in SPSS version 20.
Results: A total of 134 patients were included in the study. The study showed post MI patient were highly adherent to medication (92.5%). ADR was not significantly associated with medication adherence.
Conclusion: Patients were highly adherent to medication and the effect of ADR on medication adherence was not significant.
Apolipoprotein B and Lipid Profile among Patients Diagnosed with Acute Myocardial Infarction.
Authors: Shrestha Deependra , Yadav Binod Kumar , Gajurel Ratna Mani , Sharma Vijay Kumar , Raut Mithlesh , Bhattarai Aseem , Shrestha Sweta , Ghimire Sapana , Shakya Basu , Tuladhar Eans Tara 
Published: June 2022

Background and Aims: Acute myocardial infarction (AMI) is a leading cause of death among men and women globally and often a sequelae to atherosclerotic cardiovascular disease [ASCVD]. Atherosclerosis is linked with abundance of Apolipoprotein B [ApoB] and the lipid constituents they are carrying. There are limited data of ApoB status and its usage alongside conventional lipid profile parameters among AMI patients of Nepal. The study aim estimate the blood level of ApoB and determine its usefulness alongside analysis of total cholesterol[TC], triglycerides[TG], high density lipoprotein cholesterol[HDL-C], low density lipoprotein cholesterol[LDL-C],non-HDL cholesterol, LDL/HDL ratio in AMI patients .
Methods: This was a hospital based comparative cross-sectional study conducted in patients attending Manmohan Cardiothoracic Vascular and Transplant Centre [MCVTC] and Shahid Gangalal National Heart Centre[SGNHC] over a period of 1 year. Seventy three diagnosed AMI patients were enrolled using convenient sampling technique. Forty patients undergoing regular general health checkup in Tribhuvan University Teaching Hospital [TUTH ] were recruited as controls. Laboratory analysis was carried by turbidimetric method for Apolipoprotein B and enzymatic methods for lipid profile parameters in department of Biochemistry, TUTH. Data was analyzed using SPSS version 18.0.
Results: AMI was seen in the mean age of 56±11 years with male predominance. Mean level and standard deviation of ApoB was 99.2±17.7mg/dl in AMI which was significantly higher than controls. ApoB showed moderate correlation with non-HDL cholesterol [r=0.378,p<0.001] and HDL-C[r= -0.490,p< 0.001].
Conclusion: Our study found a significantly higher level of ApoB in AMI with moderate correlation with non HDL-C and HDL-C, necessitating its usage as a complementary marker to conventional lipid profile.
MATHEMATICAL MODEL OF INDUCTION RHEOSTAT TWO COIL DESIGN
Authors: Kolychev S. , Malyuk V. , Sianov O. 
Published: June 2022

The vast majority of research is devoted to induction rheostats (IR) of disk design with a single coil. IRs of this design have a number of disadvantages: increased resistance at low current frequencies and a significant aperiodic current component in transient conditions. The elimination of these shortcomings gives IR with two coils. In this design, the coil is divided by a ferromagnetic plate into two equal halves, which are included in the circuit in concert. With this connection of the coils, their magnetic fields are directed oppositely. At a current frequency of 50 Hz, the depth of field penetration into the metal is insignificant and the magnetic flux passes through the plate from both sides. With a decrease in the current frequency, the depth of penetration of the flow increases and the field of one coil displaces the field of the other. To study the electromagnetic parameters of ІR, their mathematical model in the field formulation has been developed. In this case, the following assumptions are made: there are no gaps at the joints of structural elements (the steel parts of the body are a ferromagnetic screen) and coil insulation, the influence of the temperature effect on the specific conductivity, magnetic permeability is neglected, and the hysteresis of steel is not taken into account. The relationship between magnetic induction and magnetic field strength appears to be a normal magnetization curve. Since the IR construction has the property of symmetry about the central axis of rotation, the equations are written in cylindrical coordinates relative to the vector magnetic potential. A mathematical model is presented in the form of a system of differential equations, for the solution of which the finite element method was used. Dependences of the current ІR on time and the distribution of magnetic induction in the cross section of the coils are obtained. A comparative analysis showed that a two-fold decrease in the thickness of the inner ring of the structure made it possible, at a frequency of 5 Hz, to reduce the total resistance of the rheostat by 1,74 times. To conduct experimental studies of IR, a laboratory installation was created, which made it possible to remove the dependences of resistance on the magnitude and frequency of the current in the coils. The experimentally obtained dependences of the impedance ІR on frequency at fixed values ​​of currents are compared with the calculated points. It is shown that the discrepancy between them is 510 %. The obtained accuracy is sufficient for engineering calculations.
ANALYSIS OF PARAMETERS AND MODELING OF WEAR ROLLS OF HIGH-SPEED WIRE BLOCKS
Authors: Samokhval V. , Stasko Ye. 
Published: June 2022

Research on the study of features and modeling of wear of rolls remains relevant, due to the need to predict the stability of rolls and determine their costs. The importance of such research increases with the introduction of new roll materials, in particular tungsten carbide alloys.
The processes of hot rolling are characterized by the simultaneous action of several main mechanisms of wear. Various models for predicting wear are known for these mechanisms, but under current conditions there is a need to develop local models that take into account the peculiarities of technology. Such conditions include high-speed wire blocks.
The aim of this work is to analyze the parameters of high-speed rolling according to the level of their impact on the wear of the rolls and to develop a model of wear of the rolls of the unit based on the actual wear of several sets of rolls. For the analysis the results of measurements of wear of four sets of rolls which were executed by an optical method and calculated parameters of rolling on usual technology are used. Correlation analysis was performed, using the indicator of wear intensity, as the ratio of maximum wear to the amount of rolled metal in the caliber. A linear dependence was chosen to build the regression model.
According to the results of the analysis of the wear rate and rolling parameters in the high-speed wire block, it is established that the well-known tribological rolling parameters vary according to the block modules in a rather narrow range, which does not reveal their effect on wear. That is, the effect of these parameters is approximately the same for all modules of the unit, so it is not statistically confirmed.
The correlation analysis revealed the most significant parameters of rolling by the effect on the wear rate, namely the relative velocity of the cell, the elongation coefficient and the cell shape parameter. For these parameters, a regression model was obtained to determine the wear rate. The model confirms the adequacy and provides an acceptable level of accuracy in determining the wear of the rolls of the block.
The obtained regression model can be used to determine the durability grooves rolls of the block and predict the expense of rolls, as well as to adjust the technological parameters to reduce wear and expense of rolls.
TENSE CONDITION OF DEEP INSERT ROPES
Authors: Hupalo Yu. , Belmas I. , Bilous O. , Tantsura G. 
Published: June 2022

The problem of determining the stress state of deep anchor rope anchors between structural elements is solved in the scientific work. The purpose of this work was to develop a method for determining the stress state of deep anchor rope anchors in order to increase the level of safety of mining operations and maximize the monolithic nature of the rock formation. According to the goal, the main task was to study the relationship between the elements of rope anchors and the nature of the load distribution.
An analysis of recent work and publications has shown that the use of a single anchor is uneven distribution of load fields, high concentration of stress forces around the perimeter of the structure and the formation of uneven zones of inelastic deformations. However, the stress forces are reduced by using several rope anchors, leaving local perturbations. Attempts to reduce local perturbations on the surface of the tectonic layer of the rock led only to an increase in current.
The model of interaction of an anchor through a layer of a fixer with an array of rock mass is formed. In the anchor, the cable is much smaller in diameter than the size of the array in the plane it is normal. As a result, the compressive stiffness of the array in the direction of the parallel cable can be assumed to be infinite. The cross section of the anchor cable will be considered round. The cable is located in a cylindrical bore. Assume that their axes coincide. There is a fastener between the array and the cable. Its outer surface is stationary and transmits only tangential stresses. The inner surface of the fastener interacts with the outer surface of the cable without the possibility of their mutual displacement.
According to this model, our proposed method of determining the stress state allows you to calculate the stress forces and set the allowable characteristics at the stage of manufacture of rope anchors. It is also possible to determine the stress state of the elements of the deep anchor rope anchors, in particular the tangential stresses on the surface of the adhesive bond of the cable and fastener. According to the results, the prospects of the study are analytical calculations of this design and derivation of optimal parameters of rope anchors.
CHANGES IN THE DISTRIBUTION OF HARDNESS AND MICROHARDNESS ACCORDING TO THE CROSS SECTION OF CONTINUOUS TRACK DETAILS AS A RESULT OF THEIR WEAR
Authors: Peremitko V. , Lee M. , Kriventsov D. 
Published: June 2022

The performance of the “base-applied layer” system, that forms the contact surface of parts that are subject to intensive wear, significantly depends on the gradient of mechanical characteristics in depth in the near-surface areas of contact parts. That is why the initial data before the design of the technology determines the hardness of the base material and the requirements for the material of the layer that should be applied during restoration or strengthening. This usually takes into account the initial mechanical characteristics of the new part, without taking into account the changes that occur with the material during operation, which is often accompanied by prolonged thermal exposure. Ignoring this fact during the development of renovation technology can significantly reduce its effectiveness. It is also important to know the value of hardness and microhardness in order to adequately assess the processes that accompany the wear of parts and predict its intensity.
Therefore, when restoring each specific part after its wear, it is necessary to take into account the specific changes that have occurred in the surface layer of the contact surface. The aim of the study was to experimentally determine the hardness and microhardness of the surface layer material in the areas of greatest change in the initial geometry of the links and rollers of the continuous track to take into account the values obtained while developing their renovation technology.
Studies of the distribution of hardness in the cross section of the new links revealed the initial uneven, with a decrease in hardness to the sides, thermal hardening of only the working surface. During operation (as a consequence of friction-deformation hardening) there is a decrease in hardness in depth by HRC 3...5 and alignment in the width of the working area to the level of HRC 25...33 against initial HRC 12...20. Studies of static microhardness in the cross section of new and worn rollers revealed the initial state of the material as inhomogeneous, which in the process of wear can be stabilized due to repeated hardening-softening. According to these changes, the maximum allowable load is estimated and it is determined that the heat treatment mode in the manufacture of new parts does not provide the required properties of the surface layer. This should be taken into account when selecting the material of the surface layers, which should be welded when restoring worn-out links and rollers, as well as when appointing the next heat treatment.
KAMPUS MERDEKA DALAM PENCAPAIAN PEMBELAJARAN DI ERA REVOLUSI INDUSTRI 4.0 DENGAN TANTANGAN COVID 19 DI UNIVERSITAS MUHAMMADIYAH BANJARMASIN
Authors: Ngalimun Ngalimun , Agustina Anita , Suwandewi Alit 
Published: June 2022

Merdeka Belajar Kampus Merdeka yang membuka kesempatan kepada mahasiswa untuk belajar secara langsung dari dunia nyata dengan mempraktikkan experiential learning. Kegiatan AMSP dilaksanakan di satuan pendidikan mencakup perencanaan, pelaksanaan, dan penilaian pendidikan, dan pengembangan persekolahan, baik intrakurikuler maupun ekstrakurikuler. AMSP melibatkan sejumlah pihak, di antaranya mahasiswa, program studi, dan satuan pendidikan mitra. Agar pelaksanaan kegiatan dapat berjalan lancar, terencana, dan terukur, petunjuk teknis yang menguraikan proses dan peran setiap pihak sangat diperlukan. Tentu penyesuaian diperlukan dalam menerapkan Pendidikan era Revolusi 4.0. Akan tetapi tidak dapat dipungkiri adanya wabah Covid-19 menjadi salah satu pendorong penerapan sistem ini. Di sisi lain selain dituntut memahami teknologi dan informasi serta cara mengimplementasikannya, tentu terdapat permasalahan yang timbul yaitu terkait sarana prasarana yang memadai. Misalnya peserta didik dari keluarga yang kurang mampu tidak memiliki laptop/smartphone. Maka kebijakan sudah seharusnya memperhatikan hal tersebut. Pihak sekolah memiliki Surat Keputusan (SK) peserta didik kurang mampu dan melakukan pendampingan belajar bagi mereka yang telah didata dengan memperoleh subsidi silang atau pemecahan masalah lainnya.
STUDI LITERATUR KEPEMIMPINAN KEPALA SEKOLAH DALAM MENINGKATKAN MUTU SEKOLAH DI ERA REVOLUSI INDUSTRI 4.0
Authors: Sugiarti Yuli 
Published: June 2022

Artikel ini bertujuan untuk membahas dan mengkaji mengenai kepemimpinan kepala sekolah dalam meningkatkan mutu sekolah di era revolusi industri 4.0. Metode penelitian yang digunakan dalam artikel ini yaitu studi literatur, yang mana data diperoleh dengan cara mengkaji berbagai sumber literatur. Studi literatur yang dilakukan mencakup tentang kepemimpinan kepala sekolah dalam meningkatkan mutu sekolah di era revolusi industri 4.0. Hasil dari studi literatur menunjukan bahwa kepemimpinan kepala sekolah pada era revolusi industri 4.0 dituntut untuk bisa mengikuti perkembangan teknologi dalam menjalankan kepemimpinanya karena ini sangat mempengaruhi kualitas atau mutu sekolah dalam menghadapi perkembangan zaman. Dalam meningkatkan kualitas pendidikan di era revolusi industri 4.0, salah satu unsur yang sangat penting untuk merealisasikannya yaitu terdapat peran penting kepemimpinan kepala sekolah dalam lembaga pendidikan yang mana kepala sekolah mampu menjalankan kepemimpinan yang efektif dan efesien, oleh karena itu artikel ini akan membahas mengenai “ Kepemimpinan Kepala Sekolah Dalam Meningkatkan Mutu Sekolah di Era Revolusi Industri 4.0 “
Clinical characteristics, endovascular choices, and surgical outcomes of intracranial vertebral artery dissecting aneurysms: a consecutive series of 196 patients
Authors: Liu Peixi , Li Zongze , Hu Liuxun , Liu Yingjun , Li Peiliang , Zhu Wei , Tian Yanlong , Mao Ying 
Published: June 2022

OBJECTIVE
The authors aimed to evaluate the clinical features, endovascular strategy selection, and outcomes of vertebral artery (VA) dissecting aneurysms (VADAs) near the origin of the posterior inferior cerebellar artery (PICA).

METHODS
Clinical data were obtained from 196 patients with 202 VADAs who had been surgically treated at the authors’ hospital between 2005 and 2021. The patients’ medical records, imaging data, and follow-up outcomes were retrospectively analyzed.

RESULTS
All 196 patients (148 male, 48 female; mean age 53 years) underwent endovascular therapy for VADA. The most common chief complaints were headache (56.6%), dizziness (40.8%), and other occasional symptoms (18.4%). Twenty-six patients experienced posterior circulation ischemia, and 25 patients experienced subarachnoid hemorrhage (SAH). On DSA images, 37 aneurysms were found in the dominant VA, and 165 aneurysms were found on the nondominant side. Eighty-eight VADAs had stenosis. Regarding the VADA location, there were 59 distal, 51 proximal, 23 ventral, 64 PICA, and 5 obliteration types. Single-stent implantation (10.9%), overlapping stent implantation (23.8%), flow diverter (FD) implantation (11.9%), single stent-assisted coil (SAC) embolization (31.7%), overlapping SAC embolization (12.9%), parent artery occlusion (PAO) (8.4%), and FD-assisted coil embolization (0.5%) were chosen. The follow-up rate was 82.7%. The modified Rankin Scale (mRS) score was 0.5 ± 1.1. Ninety-six patients underwent DSA. The complete occlusion rates were 100%, 81.4%, 56.7%, and 76.5% in the PAO group, SAC reconstruction group, stent implantation group, and FD implantation group, respectively.

CONCLUSIONS
Young patients showed a higher probability of SAH, and elderly patients showed a higher probability of posterior circulation infarction. The surgical plan selection should be based on the SAH history, VA dominant side, and PICA origin location.
Machine learning for predicting hemorrhage in pediatric patients with brain arteriovenous malformation
Authors: Saggi Satvir , Winkler Ethan A. , Ammanuel Simon G. , Morshed Ramin A. , Garcia Joseph H. , Young Jacob S. , Semonche Alexa , Fullerton Heather J. , Kim Helen , Cooke Daniel L. , Hetts Steven W. , Abla Adib , Lawton Michael T. , Gupta Nalin 
Published: June 2022

OBJECTIVE
Ruptured brain arteriovenous malformations (bAVMs) in a child are associated with substantial morbidity and mortality. Prior studies investigating predictors of hemorrhagic presentation of a bAVM during childhood are limited. Machine learning (ML), which has high predictive accuracy when applied to large data sets, can be a useful adjunct for predicting hemorrhagic presentation. The goal of this study was to use ML in conjunction with a traditional regression approach to identify predictors of hemorrhagic presentation in pediatric patients based on a retrospective cohort study design.

METHODS
Using data obtained from 186 pediatric patients over a 19-year study period, the authors implemented three ML algorithms (random forest models, gradient boosted decision trees, and AdaBoost) to identify features that were most important for predicting hemorrhagic presentation. Additionally, logistic regression analysis was used to ascertain significant predictors of hemorrhagic presentation as a comparison.

RESULTS
All three ML models were consistent in identifying bAVM size and patient age at presentation as the two most important factors for predicting hemorrhagic presentation. Age at presentation was not identified as a significant predictor of hemorrhagic presentation in multivariable logistic regression. Gradient boosted decision trees/AdaBoost and random forest models identified bAVM location and a concurrent arterial aneurysm as the third most important factors, respectively. Finally, logistic regression identified a left-sided bAVM, small bAVM size, and the presence of a concurrent arterial aneurysm as significant risk factors for hemorrhagic presentation.

CONCLUSIONS
By using an ML approach, the authors found predictors of hemorrhagic presentation that were not identified using a conventional regression approach.
Radiographic and MRI evidence of indirect neural decompression after the anterior column realignment procedure for adult spinal deformity
Authors: Tani Yoichi , Saito Takanori , Taniguchi Shinichirou , Ishihara Masayuki , Paku Masaaki , Adachi Takashi , Ando Muneharu 
Published: June 2022

OBJECTIVE
The anterior column realignment (ACR) procedure, which consists of sectioning the anterior longitudinal ligament/annulus and placing a hyperlordotic interbody cage, has emerged as a minimally invasive surgery (MIS) for achieving aggressive segmental lordosis enhancement to address adult spinal deformity (ASD). Although accumulated evidence has revealed indirect neural decompression after lateral lumbar interbody fusion (LLIF), whether ACR serves equally well for neural decompression remains to be proven. The current study intended to clarify this ambiguous issue.

METHODS
A series of 36 ASD patients with spinopelvic mismatch, defined as pelvic incidence (PI) minus lumbar lordosis (LL) > 10°, underwent a combination of ACR, LLIF, and percutaneous pedicle screw (PPS) fixation. This “MIS triad” procedure was applied over short segments with mean fusion length of 3.3 levels, and most patients underwent single-level ACR. The authors analyzed full-length standing radiographs, CT and MRI scans, and Oswestry Disability Index (ODI) scores in patients with minimum 1 year of follow-up (mean [range] 20.3 [12–39] months).

RESULTS
Compared with the preoperative values, the radiographic and MRI measurements of the latest postoperative studies changed as follows. Segmental disc angle more than quadrupled at the ACR level and LL nearly doubled. MRI examinations at the ACR level revealed a significant (p < 0.0001) increase in the area of the dural sac that was accompanied by significant (p < 0.0001) decreases in area and thickness of the ligamentum flavum and in thickness of the disc bulge. The corresponding CT scans demonstrated significant (all p < 0.0001) increases in disc height to 280% of the preoperative value at the anterior edge, 224% at the middle edge, and 209% at the posterior edge, as well as in pedicle-to-pedicle distance to 122%. Mean ODI significantly (p < 0.0001) decreased from 46.3 to 26.0.

CONCLUSIONS
The CT-based data showing vertebral column lengthening across the entire ACR segment with an increasingly greater degree anteriorly suggest that the corrective action of ACR relies on a lever mechanism, with the intact facet joints acting as the fulcrum. Whole-segment spine lengthening at the ACR level reduced the disc bulge anteriorly and the ligamentum flavum posteriorly, with eventual enlargement of the dural sac. ACR plays an important role in not only LL restoration but also stenotic spinal canal enlargement for ASD surgery.