bluuebunny/crossref_metadata_2025_split huggingface dataset:
Contrast does not Affect Adipose Mesenchymal Stem Cell (AMSC) Proliferation
Authors: Soekarno G R , Suryawan I G R , Andrianto A , Valentidenta W M 
Published: February 2020

Abstract
In cardiology, stem cell therapy is currently being used. Adipose Mesenchymal Stem Cell (AMSC) is a cell culture expected to give a clinical improvement in patients. One of the methods to transfer the stem cell is cardiac catheterization assisted by contrast. There are no studies concerning the effect of contrast on proliferation or viability of stem cells. This study was designed to see the effect of contrast on the growth of AMSC culture in vitro. This research is an experimental post-test control group study. The samples were obtained from the thawing process at the Institute of Tropical Disease (ITD) Unair. The samples were cultured and checked immunohistochemically, divided into two groups, which are the treated group given iodixanol contrast and control group. The treated group was divided into se subgroups incubated 24 hours, which received 1mg/mL, 500µg/ml, 250µg/ml, 125µg/ml, 62.5µg/ml, 31.25µg/ml and 15.625µg/ml. AMSC proliferation was assessed by microtetrazolium (MTT) Cell Proliferation Assay and analyzed using T 2 free sample test and Analysis of Variance (ANOVA). MTT Cell Proliferation Assay showed no significant differences in AMSC proliferation on iodixanol contrast media compared to the control group. Iodixanol contrast does not affect AMSC proliferation.
Lower Gensini Score in Navy Personnel Compared to Civilians, rather than for Non-Commissioned Officers
Authors: Semita I G P G , Al-Farabi M J , Huda M F , Jovie B , Suryawan I G R 
Published: February 2020

Abstract
Studies had reported an increasing trend of coronary artery disease (CAD) cases in the navy population. However, the severity of the CAD among different navy ranks is yet to be studied. The Gensini scoring system is a popular and developed objective method to quantify the CAD severity through the coronary angiographic findings. In this retrospective cross-sectional study, researchers enrolled 171 patients referred to the Indonesian Navy Hospital of Dr. Ramelan who underwent elective coronary angiography between January 2019 and June 2019. Researchers divided the study population into five groups of civilians, enlisted, noncommissioned officers, new commissioned officers and middle-rank officers. Post-hoc least significant difference (LSD) test showed the average Gensini Score of civilian (41.54 ± 48.06) is higher than enlisted (13.37 ± 26.25; p=0.031), new-commissioned officers (13.21 ± 26.76; p=0.020), and middle-rank officers (21.23 ± 33.17; p=0.017), but not for non-commissioned officers (45.61 ± 42.62; p=0.657). Non-commissioned officers have a significantly higher Gensini Score than enlisted (p=0.027), new-commissioned officers (p=0.019) and middle-rank officers (p=0.023). This study concludes that the majority of Indonesian Navy personnel had a lower Gensini Score compared to civilians but not for non-commissioned officers. This study suggests that civilian and non-commissioned officers may have a higher risk of developing severe CAD.
Renal Artery Stenosis: The Challenging in Diagnosis and Therapy
Authors: Dewi I P , Mardiana N 
Published: February 2020

Abstract
Hypertension is still the most prevalent of non-communicable diseases in Indonesia. Renovascular hypertension is one type of secondary hypertension. It is commonly caused by the presence of renal artery stenosis (RAS). Whereas, atherosclerosis (ARAS) and fibromuscular disease (FMD) are the most common causes of RAS. Early diagnosis is necessary because it has the potential to be cured by eliminating stenosis of the renal artery. However, the signs and symptoms of renovascular hypertension are not specific. The supporting examination to diagnose RAS is also expensive. So, screening in the population at risk is needed. The examinations to prove the presence of RAS are arteriography, captopril renogram, renal ultrasonography, renal Doppler ultrasonography, magnetic resonance angiography (MRA), and computed angiographic tomography (CTA). Until now, three therapeutic modalities can be selected in the management of renovascular hypertension; pharmacological therapy, surgical intervention, percutaneous intervention angioplasty with and without stenting. This narrative review summarizes the literature focused on the diagnosis and therapy of RAS.
Fibrinogen and Low-Density Lipoprotein (LDL) Cholesterol Levels with the Occurrence of Acute Myocardial Infarction: Is it Correlated?
Authors: Warno I S , Putranto J N E , Novitalia B 
Published: February 2020

Abstract
Fibrinogen is considered as a risk factor associated with cardiovascular disease, especially acute myocardial infarction (AMI). The role of increasing levels of fibrinogen in the thrombosis shows that there is an effect that causes the pathway to form a thrombosis. Increased plasma high-density lipoprotein (LDL) cholesterol can also induce the development of atherosclerosis and is associated with AMI events. This study was an observational analytic study using a cross-sectional approach, carried out from August-November 2015 in Dr. Soetomo Hospital Surabaya. Samples were 67 subjects who fulfilled inclusion and exclusion criteria. A total of 67 subjects were assessed, 47 (70.15%) were males, and 20 (29.85%) were females. The mean age was 5.07 ± 11.02 years old, ranging from 30 to 85 years. AMI was diagnosed in 49 patients (26.87%). Management of AMI patients consisted of conservative medical therapy (42.86%), thrombolytic therapy (18.37%) and PPCI (38.77%). The statistical analysis revealed significant differences in plasma fibrinogen and LDL cholesterol levels between the AMI patient group and the control group. There was a significant correlation between fibrinogen levels and LDL cholesterol levels. Fibrinogen and LDL cholesterol levels are correlated with AMI risk factors. In subjects with AMI, there were higher fibrinogen and LDL cholesterol levels compared to non-AMI subjects.
Thrombolytic Therapy in Octogenarian Patient with STEMI at Buleleng General Hospital
Authors: Pasha M A , Susila I K 
Published: February 2020

Abstract
Coronary heart disease incidence in octogenarian keeps increasing in line with increasing population of elderly. In elderly, there were more non-ST-elevation myocardial infarction (NSTEMI) patients compared to the ST-elevation myocardial infarction (STEMI) ones. In elderly, thrombolytic therapy is thought to have higher bleeding incidence compared to cardiac intervention. Aim of this study was to determine the prevalence of bleeding associated with thrombolytic therapy in octogenarian patients with STEMI during 2018 at Buleleng General Hospital. This is a descriptive retrospective study conducted on octogenarian patients with STEMI who received thrombolytic therapy. Additionally, bleeding incidence that occurred during treatment is also observed. In 2018, 62 octogenarian patients were admitted with acute coronary syndrome (ACS). According to patient medical records, 16 patients were diagnosed with STEMI and six of them received thrombolytic therapy. Bleeding effect was recorded in all patients with details of two patients experienced oral mucosa bleeding and four patients experienced urinary tract bleeding. Out of all octogenarian patients with STEMI who were admitted, bleeding occurred in all patients in which urinary tract bleeding is the most common complication.
The Correlation Between Strain and Strain Rate Left Ventricle with Functional Capacity in Post Myocardial Infarction Patients with Heart Failure
Authors: Muqsith M , Pikir B S , Rifqi M 
Published: February 2020

Abstract
Myocardial infarction (MI) may alter left ventricular (LV) systolic function, which, in turn, may reflect on functional capacity. Objective systolic function assessment using 2D speckle-tracking echocardiography is promising to assess the correlation between LV longitudinal strain and strain rate with functional capacity in post-MI patients with heart failure. A cross-sectional study was done on 33 consecutive post-MI patients with class I-II NYHA heart failure visiting the cardiology outpatient clinic of Dr. Soetomo General Hospital, Surabaya. The resting echocardiogram was taken, followed by a treadmill stress test using Naughton protocol. Appropriate statistical analyses were used to determine the correlation of systolic longitudinal strain and strain rate with exercise capacity. Study subjects were 69.7% males with age 58.45±6.2 years old. EF by Biplane was 40.55±8.26%; with global peak longitudinal strain –12.23±5.19%, and strain rate – 0.67±0.25s−1; and peak exercise capacity 3.69±1.8 METs. Using Pearson’s test, there was a strong negative correlation of systolic longitudinal strain and strain rate with functional capacity (r = –0.577, r = –0.607respectively; p<0.05). LV systolic longitudinal strain and strain rate were strongly correlated with functional capacity in post-MI patients with heart failure.
Predicting the Likelihood for Severe CAD and CABG Indication on Elective Patients: Comparison of Novel CHA2DS2-VASc-HSF with CHA2DS2 and CHA2DS2-VASc Score
Authors: Al-Farabi M J , Semita I G P G , Shonafi K A , Ramadhiani R , Jovie B , Andrianto A 
Published: February 2020

Abstract
Abundant scoring systems are available to assess the severity of coronary artery disease (CAD) and its intervention. However, the majority of them require advanced technologies. CHA2DS2-VASc-HSF is a novel and simple risk scoring, easily used for screening in primary care level. We hypothesize that CHA2DS2-VASc-HSF is predictive for severe CAD and indicative for coronary artery bypass grafting (CABG). Additionally, we compared its predictive value with CHA2DS2 and CHA2DS2-VASc score. A total of 210 consecutive patients who underwent elective coronary angiography were enrolled in our study. Anthropometric, laboratory, angiographic findings, and patient history were obtained from medical records and used to calculate CHA2DS2, CHA2DS2-VASc, and CHA2DS2-VASc-HSF score. Severe CAD is defined as Gensini Score >20. CABG indication was defined based on Class I recommendation from the American Heart Association (AHA). Statistical analyses were done using SPSS 25.0. Receiver operating characteristic (ROC) curve analysis showed the CHA2DS2 score (AUC [Area Under the Curve], 0.630; 95% CI, 0.555–0.706; p = 0.001), CHA2DS2-VASc score (AUC, 0.680; 95% CI, 0.608–0.752; p=0.000), and CHA2DS2-VASc-HSF score (AUC, 0.785; 95% CI, 0.723–0.846; p=0.000) were predictive of severe CAD. CHA2DS2-VASc-HSF score (AUC, 0.841; 95% CI, 0.711–0.971; p=0.00) were predictive of CABG indication. The CHA2DS2-VASc-HSF score provides the highest predictive value for severe CAD and CABG indication compared to the CHA2DS2 and CHA2DS2-VASc score, suggesting that CHA2DS2-VASc-HSF score may be used in primary care settings to suggest referral for coronary angiography and predict CABG possibilities.
Different Grades of Body Mass Index are Correlated with Left Atrium and Ventricle Structures in Patients with Hypertensive Heart Disease
Authors: Bhisma M S , Al-Farabi M J , Pikir B S 
Published: February 2020

Abstract
Obesity constitutes a major health issue which contributes as the risk factor of cardiovascular disease. This cross-sectional study included 50 consecutive patients with HHD (Hypertensive Heart Disease) in the Cardiovascular Department of Dr. Soetomo General Hospital. The echocardiographic examination was done using GE vivid 7. The statistics were evaluated using SPSS 25.0. The research showed that different grades of BMI (body mass index) were positively correlated with Left Atrial (LA) major (r=0.335), Right Atrial (RA) Major (r=0.371), Left Ventricle end Diastole (LVD) Mass (r=0.341), Left Ventricle end Sytole (LVS) Mass (r=0.303), Left Ventricle Posterior Wall end Diastole (LVPWD) (r=0.369), Left Ventricle Posterior end Systole (LVPWS) (r=0.391), and inversely correlated with Left Ventricle Sphericity Index (LVSI) Doppler (r=-0.376). Obese (BMI>30) patients have a significantly lower ejection fraction compared to normoweight (BMI<25) patients (64.3±3.67% vs 62.12±0.98%, p=0.046). In conclusion, the grade of BMI of the HHD patient is associated with an increased volume of the left atrium and ventricle. This suggests that obese patient with HHD should be assessed carefully for atrial and ventricle enlargement.
Effects of hot forging on the structural condition in HS 6-5-2 high-speed steel
Authors: Průcha V , Benešová S , Veselý V , Kesl M 
Published: February 2020

Abstract
Microstructure analysis was performed on rolled bars of high-speed steel after two and three forging cycles, each cycle comprising one upsetting and one drawing out operation. High-speed steels belong to difficult-to-form materials with a narrow forging temperature interval. Forging above the maximum forging temperature may lead to grain coarsening. Below the minimum forging temperature, deformation resistance of the material increases, and the workpiece may fail. Using numerical modelling, special forging dies were designed and effective strain distribution was calculated for an axial cross-section plane in specimens after two and three forging cycles. The purpose of the analysis was to identify the relationship between the amount of effective strain and the shape and size of austenite grain and the volume fraction and density of carbides after forging. The size of prior austenite grains was measured using the linear intercept method which is based on the Snyder-Graff method. Grain shapes were characterized in terms of circularity, which is the difference between the shape in question and a circle. With increasing amount of strain, the grains in the material became finer, as undissolved carbides impeded grain growth. In as-received rolled condition, the austenite grain size was G9. After three forging cycles, it was smaller, G11 (the higher the number, the smaller the grains). Circularity characterizes the complexity of a grain shape. Micrographs of carbide particles were taken using a scanning electron microscope and examined with NIS Elements image analysis software. The majority of carbides were sized between 0.2 and 2 μm. The carbides which are less than 1 μm in size do not shrink in response to increasing strain and their quantity does not change appreciably. Carbides with a size of 1-2 μm show a different behaviour. In the central region of specimens, where strain is the largest, their amounts are much larger than in less-worked regions.
The effect of application of the plaster as a mould material on the microstructure and properties of AlSi9 aluminium alloy
Authors: Bucki T , Sidorko M , Bolibruchová D 
Published: February 2020

AbstractThe study involved examination of the effect of mould material on the microstructure and mechanical properties of AlSi9 aluminium alloy castings. The castings were fabricated in: plaster-based moulds, dehydrated plaster-based moulds and steel mould. The structure of castings from plaster mould not subjected to dehydration process was characterized by a significant porosity. This results indicated that as-cast plaster mould is not suitable for casting of AlSi9. Dehydrating of the mould led to significant reduction in the number of pores in the casting, while no pores were observed in the structure of steel mould castings. Microstructure of dehydrated plaster mould castings and steel mould castings was analysed in a Scanning Electron Microscope. Both types of examined castings were characterized by typical microstructure containing a eutectic (α-Al and Si) with dendrites of α-Al and multicomponent phases locally distributed in the matrix. Mould material affected the size of microstructural constituents of observed specimens. Castings fabricated in steel mould showed considerable refinement of the eutectic and dendrites of α-Al in comparison with dehydrated plaster castings. In addition to differences in microstructure, the castings from dehydrated plaster mould were also characterized by lower strength and smaller elongation than steel mould castings.
The effect of NPs addition on the photocatalytic and antibacterial effectivity of composite TiO2/SiO2 paint
Authors: Jakubickova M , Petrzilkova M , Amartuvshin B , Kejzlarova L , Kejzlar P 
Published: February 2020

Abstract
TiO2 in the anatase allotropic modification is well known for its photocatalytic activity. When the anatase is irradiated by UVA light, it forms an electron-hole pair which can participate in redox reaction. Thus, anatase-based layers are suitable for decomposition of organic compounds. Surface self-cleaning ability as well as antimicrobial efficacy are therefore key features for TiO2 based layers. The present paper deals with a study of ZnO, CuO and Ag NPs addition on the antibacterial and photocatalytic effectivity of TiO2/SiO2 paint.
Effect of Mn addition on serrated plastic flow behaviour in high-strength multiphase steels with retained austenite
Authors: Kozłowska Aleksandra , Grzegorczyk Barbara , Staszuk Marcin , Grajcar Adam 
Published: February 2020

Abstract
The effect of manganese addition (from 3 to 5%) on the serrated plastic flow behavior in medium manganese TRIP steels was investigated in static tensile tests performed in a temperature range of 20-200°C. The Portevin-Le Chatelier (PLC) effect was observed in a steel containing the higher Mn content. The effect of deformation temperature on the critical strain for the serrated flow was noted. The relationships between the manganese content, deformation temperature, mechanical properties and the appearance of serrated flow were characterized.
Methodology for observation of maraging tool steel after 3D printing using FIB and STEM mode
Authors: Opatová K , Kučerová L , Zetková I 
Published: February 2020

Abstract
The components of the maraging tool steel produced by 3D printing are further heat-treated after printing. It includes a stress relief annealing and precipitation hardening. During this process precipitates of Ni3Ti and Fe2Mo or Fe7Mo are formed, which significantly contribute to an increase in ultimate tensile strength, hardness, and toughness. To understand the precipitation processes, it is necessary to describe the particles in detail. However, they are very small in size and cannot be examined properly by a light microscope (LM) or by scanning electron microscope (SEM). A possible way to investigate and describe these precipitates is to produce a thin lamella using a focused ion beam (FIB) in the electron microscope chamber, where scanning transmission electron microscopy (STEM) is subsequently used for observation. A lamella was prepared from the DMLS (Direct Metal Laser Sintering) printed part by an ion beam for observation in STEM mode. The experiment took place at the Zeiss AURIGA scanning electron microscope, equipped with an ion gun and also with STEM capabilities for thin samples. The lamella preparation methodology was gradually optimized to achieve sufficient resolution for observation of these very fine microstructures produced by 3D printing.
Characterization of Low Cycle Fatigue Parameters of Rotor Steel using Sub-sized Specimens
Authors: Procházka R , Konopík P 
Published: February 2020

Abstract
The paper is dealing with strain controlled cyclic testing method employing a novel strain-control technique based on digital image correlation (DIC) in low-cycle fatigue (LCF) region. The cyclic behaviour of 22CrMoNiWV 8-8 rotor steel was investigated on sub-sized round specimens with a diameter of 2 mm in gage length and total length of 20 mm. These results were compared with results obtained using conventional specimens designed in accordance with the ASTM E606 standard. The attention was paid to confirm the suitability of the proposed sub-sized geometry, testing set up and procedure. The test procedure and results obtained enabled to record hysteresis loops, construct Manson-Coffin curves and obtain cyclic material properties in LCF region.
Residual stress investigation in additively manufactured samples
Authors: Vavřík Jaroslav , Hodek Josef 
Published: February 2020

Abstract
In the present study, additively manufactured (AM) samples of different sizes were analysed by the contour method (CM). Builds of three different volumes were examined to determine the influence of residual stress (RS) distribution along the z-axis on volumetric changes in the part. They were made using the direct energy deposition (DED) technique. Only a handful of reports cover the use of CM for finding the RS distribution in DED builds. This study aims to complement those with new findings.
The contour method is a destructive technique whose main advantages are the absence of sample size limits and the ability to predict residual stresses at greater depths than other methods. In this study, residual stresses were evaluated in three stainless steel samples (35×35×35 mm, 25×25×25 mm, 15×15×15 mm) prepared by the DED method. Stainless steel 316L powder was blown into a melt pool created by a high energy laser source. The melted powder solidifies as the laser head moves along a predefined path. In order to protect the material from oxidation during deposition, argon is used as a shielding gas-fed continuously to the melt pool.
316L austenitic stainless steel was chosen for this experiment because it undergoes no phase transformations during deposition. This reduces the complexity of the metallurgical processes involved. Evaluation of the sections produced by the contour method was carried out using an optical precision measuring machine (3D scanner) and FE software.
Applications of Automation and Robotics in Agriculture Industries; A Review
Authors: Kulkarni Amith A , Dhanush P , Chetan B S , Thamme Gowda C S , Kumar Shrivastava Prashant 
Published: February 2020

Abstract
In this present work, we have discussed about the application of automation and robotics in the various stages of the agriculture industries like irrigation of horticulture land, parks, gardens, and golf courses efficiently and reduce the wastage of water. The uses of automation and smart systems also help in food safety by the selection of appropriate chemicals. The application of multitasking robots is also useful to make it fast and maintain quality. In the smart farming also helps to maintain the humidity, temperature and irrigation process by using the sensors and apps. The aim of this study to identify the opportunities and scope for future automation and the Internet of Things (IoT) in the field of agriculture industries
Two Finger Gesture Imitating Animatronic Hand
Authors: Verma Y , Rastogi V 
Published: February 2020

AbstractThis paper poses the discussion regarding animatronics that has been aided with modern trends in technological innovations. The ease of availability and procurement of present day items incorporate economical factors into research. To accomplish the aforementioned, a simple two fingered hand model has been developed that can be remotely controlled using a glove. The glove can be manipulated via a hand. It has been electronically modulated using Arduino Uno and servo motors. The discussion has been furthered to the amalgamation of future developments that can pave the way for commercialization of such devices. Hardships and challenges faced during building of the model and experimentation of the finalized model are detailed.
Augmentation of VIVACE by means of Thermal Buoyancy
Authors: Athar Khan Mohammad , Masood Saif , Shahzer Md. Abu , Fahad Anwar Syed 
Published: February 2020

Abstract
The present numerical simulation is carried out to evaluate the effect of Richardson Number on cylinder displacement and in turn the power extraction from the movement of cylinder. An in-house code based on arbitrary Lagrangian Euler scheme is used to tackle fluid structure interaction. The following fluid parameters is used in a present study Reynolds Number (Re) = 100, Prandtl Number (Pr) = 7.1 and Richardson number (Ri) = [-1, 0]. Structural parameters are as follows Reduced velocities (Ured) = 3 and 8, Reduced mass (Mred) = 2, damping coefficient (ξ′) is set to be zero. With the aid of thermal buoyancy there is significant increase in power is obtained.