bluuebunny/crossref_metadata_2025 huggingface dataset:
The Negative Effect of Market Orientation on SMEs' Marketing Performance in The Creative Economy Sector, and How Innovation Mediating it
Authors: Rahman Sarli , Budiyanto Budiyanto , Suwitho Suwitho
Published: March 2022

There are problems with the performance of SMEs in the creative economy sector in Indonesia. At least about 34% to 35% of SMEs in the creative economy sector experience problems related to marketing and demand. So, this study aims to prove the effect of market orientation on the SMEs' marketing performance of the creative economy sector and to prove the mediate roles of innovation. By using a sample of 200 respondents, and Structural Equation Modeling (SEM - AMOS) analysis technique, surprising results were obtained. The results are that market orientation affects marketing performance negatively. However, product innovation and process innovation can be a solution for this.
The Role of Intellectual Capital in Improving Micro, Small, And Medium-Scale Business Performance in The Hostel And Culinary Sector in Pekanbaru, Indonesia
Authors: Purwati Astri Ayu , Budiyanto Budiyanto , Suhermin Suhermin
Published: March 2022

The increased level of competitiveness and Micro, Small, and Medium-Scale Business (MSME) performance in the hostel and culinary sector in Indonesia, especially in Pekanbaru, need more concerns since MSME is an important business sector to encourage the economy of a country and reduce the unemployment rate by creating job opportunities. In the technology era, the development of the intellectual capital concept suitable for MSME is needed due to the current competitive and disruptive business area. This study was conducted in 378 MSMEs in the hostel and culinary sector in Pekanbaru city. The data analysis technique in this study was Structural Equation Modeling (SEM) assisted by AMOS. The result of this study showed that human capital influenced the financial performance and non-financial performance of MSME in the hostel and culinary sector in Pekanbaru City, while technology capital did not influence the non-financial performance of MSME in the hostel and culinary sector in Pekanbaru city. Customer capital influenced the financial and non-financial performances of MSME in the hostel and culinary sector in Pekanbaru city. Social capital influenced the financial and non-financial performances of MSME in the hostel and culinary sector in Pekanbaru city. Non-financial performance influenced the financial performance of MSME in the hostel and culinary sector in Pekanbaru city.
ROCK-POET’S PREBIOGRAPHIC FACE IN FOCUS OF INTERNET-DISCOURSE (article one)
Authors:   Polzunov Altai State Technical University, Loktevich Ekaterina V.
Published: March 2022

Using the example of the biography of a modern Russian rock-poet, the article reveals the theoretical and methodological problems of the genre of biography: genetic potential, a change in the content paradigm, ethical and aesthetic intersections of the biographer, the biographer and the recipient. The relationship between the participants in the biographical discourse is considered in the context of cultural memory, formed in the communicative field of the Internet-environment. In connection with the solution of the indicated problems, the concepts of a prebiographical face , prebiograph , epoch-making interpellative , cultural-dialogical forecast of the recipient are introduced . The question is raised about the influence of the prebiographical face of the rock-poet on the subsequent creation of his biography.
THE RESEARCH OF THE «OTHER» IN THE PROSE OF THE STRUGATSKY BROTHERS IN THE 1950S
Authors:   Samara National Research University, Lisovitskaya V. N.
Published: March 2022

The article examines the ways of organizing a dialogue with the “other” in science fiction based on the prose of the Strugatsky brothers in the 1950s. The types of “others” in their works of this period are determined. It is found that in the early Strugatskys there are at least three types of “others” relatively to the author’s “I” in the subjective sphere of the work: the narrator, the human hero, and the “other” hero who is not a human. Based on the analysis of the dialogical relationship between the author and the “other”, is made a conclusion that a special type of the dialogue arises in the works of the mid-20th-century. This type determines the main direction of the Strugatskys’ artistic world development in the second half of the century.
ARTISTIC GEOGRAPHY OF V. M. SHUKSHIN
Authors:   Altai State Pedagogical University, Kulyapin A. I. , Khudenko E. A. , Bogumil T. A.
Published: March 2022

The article is devoted to the semiotics and poetics of artistic geography of V. M. Shukshin. The comprehension of toposes in Shukshin’s texts is based on the archetypal division of space into “one’s own” (positive) and “someone else’s” (dangerous, profane). The space of Altai, endowed with signs of paradise, is the most semiotically loaded. Shukshin refers both the Urals and the Far East to the Siberian topos, scaling his own “map” of a man and being. The capitals - Moscow and Leningrad - are interpreted by Shukshin as a place of conquest and the realization of the hero’s dreams of freedom. Though, for those Shukshin’s characters who have not severed ties with their native land, the village, it is a place of spiritual hard labor and death. The ideal artistic topos is timed by Shukshin to medieval Russia and is embodied in such centers of the Russian world as Tambov, Kaluga, Voronezh and Vologda. The study of Shukshin’s geopoetics, his mythogeography allows us to reconstruct the specifics of the author’s image of the world.
UJI IN VITRO EKSTRAK KOMBINASI DAUN ASAM JAWA (Tamarindus indica L.) DAN RIMPANG KENCUR (Kaempferia galanga L.) TERHADAP SEL KANKER
Authors: Purwaningsih Dewi , Burhan Asril , Awaluddin Akbar , Mayangsari Hilda
Published: March 2022

Tanaman daun asam jawa (Tamarindus indica L.) dan rimpang Kencur (Kaempferia galanga L.) merupakan salah satu tanaman obat yang berpotensi sebagai antikanker. Penelitian ini bertujuan untuk mengetahui aktivitas sitotoksik ekstrak kombinasi daun asam jawa dan rimpang kencur terhadap sel kanker WiDr dan MCF-7 berdasarkan nilai IC50. Simplisia daun asam jawa dan rimpang kencur diekstraksi dengan metode maserasi menggunakan etanol 96%. Ekstrak etanol selanjutnya dilakukan uji sitotoksik dengan metode MTT(3-(4,5- dimetiltiazol-2-il)-2,5-difenil tetrazolium bromida) terhadap sel WiDr dan sel MCF-7. Perolehan nilai IC50 ekstrak daun asam jawa, ekstrak rimpang kencur, ekstrak kombinasi daun asam jawa dan rimpang kencur dengan perbandingan (3:7) dan (7:3) sebesar 31,31 ?g/mL, 88,79 ?g/mL, 126,13 ?g/mL dan 271,80 ?g/mL terhadap sel WiDr dan 128,63 ?g/mL, 270,43 ?g/mL, 265,83 ?g/mL dan 369,79 ?g/mL pada sel MCF-7. Berdasarkan hasil penelitian ini ekstrak kombinasi daun asam jawa dan kencur tidak tidak menunjukkan potensi yang lebih baik sebagai antikanker pada sel WiDr dan MCF-7 dibanding ekstrak tunggalnya.
STUDI ETNOMEDISIN : PENGOBATAN DIABETES BATRA CIAMIS
Authors: Harun Nurhidayati , Nopia Dini , Kurniasih Nia
Published: March 2022

Diabetes mellitus merupakan salah satu penyakit di Kabupaten Ciamis yang prevalensinya terus meningkat. Penelitian ini dilakukan untuk menggali informasi tentang tanaman obat yang digunakan oleh Batra Kabupaten Ciamis untuk mengobati diabetes. Metode penelitian dilakukan dengan mencari informasi melalui survei dan mendeskripsikan informasi secara kualitatif kemudian dilakukan pendataan bagaimana cara penggunaan tanaman obat, cara pengolahannya, bagian yang digunakan atau biasa disebut plant part use (PPU) dengan cara dibandingkan secara khasiat berdasarkan publikasi terkait pada google scholar. Penggalian informasi dengan teknik snowball sampling menggunakan penyaringan yang ketat secara inklusi dan ekslusi didapatkan hasil 8 orang Batra yang dapat diambil hasil wawancarnya, dan didapatkan 20 jenis tumbuhan obat yang digunakan dalam pengobatan diabetes melitus. Cara pengolahan yang dipilih oleh Batra yaitu bagian tanaman segar yang direbus atau dikeringkan. Nilai PPU (plant part use) yang digunakan Batra jika diurutkan dari nilai tertinggi yaitu daun 63%, akar 15%, batang 7%, bunga 4%, buah 4%, kulit batang 4%, seluruh bagian 4%. Nilai frekuensi sitasi (FC) atau kepopuleran tumbuhan tertinggi yang digunakan adalah tumbuhan insulin (Smallanthus sonchifolius) sebanyak 15%. Hasil penelitian dapat disimpulkan bahwa ditemukan seni praktek etnomedisin yang dilakukan oleh Batra di Kabupaten Ciamis yang dapat memberikan kontribusi cukup penting bagi pengobatan diabetes yang dapat dikaji lebih dalam dengan cara lebih ilmiah.
Computational Study of Biofuels Effect on Pressure and Temperature Changes Across Two-spool High Bypass Turbofan Engine Components at Various Engine Rotational Speeds
Authors: Noorakmal Noorashid  , Nurul Musfirah Mazlan
Published: March 2022

This study evaluates the effect of biofuels on pressure and temperature changes across the CFM56-3 gas turbine engine components and the overall engine performance. The analysis was performed numerically using the Gas Turbine Simulation Programme (GSP11) at increasing high-pressure turbine (HPT) shaft speeds ranging from 8400 rpm to 10 400 rpm. The biofuels used in this work were Jatropha Bio-Synthetic Paraffinic Kerosene (JSPK) and Camelina Bio-synthetic Paraffinic Kerosene (CSPK). The fuels were tested as pure and as a blend with Jet-A. Results revealed linear increases in the temperature and pressure across the compressor outlet, combustor outlet, and turbine outlet as HPT speed increases. Temperature and pressure obtained from biofuels are lower than that of the Jet-A fuel. However, the pressure reduction becomes insignificant at increasing shaft speed and surpassed Jet-A at 10 400 rpm. Utilising biofuels causes temperature reduction across the entire gas turbine components. The reduction is beneficial particularly at the turbine blade, as the blade's primary failure is mainly associated with thermal related fatigue failure. At a lower shaft speed, the thrust produced from biofuels is lower due to the temperature reduction. However, the reduction became negligible as the shaft speed increases and exceeded Jet-A at 10 400 rpm due to pressure increment. At all speeds, fuel flow and thrust specific fuel consumption (TSFC) of biofuels is 1% to 3% lower than Jet-A. Therefore, it indicates that utilising biofuels improved the engine thrust while consuming less amount of fuel.
Influence of Density, Porosity and Void Size on Thermal Conductivity of Green Lightweight Foamed Concrete
Authors: Md Azree Othuman Mydin
Published: March 2022

One of the methods to reduce the energy content of buildings is through selection of building materials. Strain on conventional energy can be reduced by employment of low energy materials and efficient structural design. The selection of materials also helps to capitalize on indoor comfort. For instant, the use of materials and components with small embodied energy or low thermal conductivity has enhanced the indoor comfort in building. Thus, a high level of insulation in any new material development is an essential step to an energy efficient design. The main purpose of this study is to investigate the thermal conductivity of green lightweight foamed concrete samples ranging from 650 until 1050 kg/m3 with constant cement-sand ratio of 1:1.5 and water-cement ratio of 0.5. This study was limited to the influence of density, porosity and void size on thermal conductivity of lightweight foamed concrete. Lower density foamed concrete translates to lower thermal conductivity. The density of foamed concrete is controlled by the porosity where lower density lightweight foamed concrete indicates greater porosity. Hence, thermal conductivity changes considerably with the porosity of lightweight foamed concrete because air is the poorest conductor compared to solid and liquid due to its molecular structure.
Unsteady MHD Squeezing Flow of Casson Fluid Over Horizontal Channel in Presence of Chemical Reaction
Authors: Nur Azlina Mat Noor  , Mohd Ariff Admon  , Sharidan Shafie
Published: March 2022

The fluid flow with chemical reaction is one of well-known research areas in the field of computational fluid dynamic. It has been acknowledged by many researchers due to its industrial applications in the modelling of flow on a nuclear reactor. Motivated by the implementation of the flow in the industry problems, the aim of this study is to explore the impacts of chemical reaction on magnetohydrodynamic (MHD) squeeze flow of Casson fluid over a permeable medium in the slip condition with viscous dissipation. The flow is induced due to compress of two plates. Transformation of the partial differential equations (PDEs) to ordinary differential equations (ODEs) is performed by imposing similarity variables. The numerical procedure of Keller-box is used to solve the dimensionless equations. Comparison of the numerical results with former studies to validate the current solutions is conducted. It is shown to be in proper agreement. The results show that the velocity and wall shear stress enhance as both plates moving nearer. Moreover, increase in Hartmann and Casson parameters reducing the velocity, temperature and concentration. The temperature and the rate of thermal transfer boosts with the existence of viscous dissipation. Furthermore, the mass transfer rate is discovered boosts in destructive chemical reaction and adverse outcome is noted in constructive chemical reaction.
Temporal Variations of the Three Geomagnetic Field Components at Colaba Observatory around the Carrington Storm in 1859
Authors: Hayakawa Hisashi , Nevanlinna Heikki , Blake Séan P. , Ebihara Yusuke , Bhaskar Ankush T. , Miyoshi Yoshizumi
Published: March 2022

The Carrington storm in 1859 September has been arguably identified as the greatest geomagnetic storm ever recorded. However, its exact magnitude and chronology remain controversial, while their source data have been derived from the Colaba H magnetometer in India. Here, we have located the Colaba 1859 yearbook, containing hourly measurements and spot measurements. We have reconstructed the Colaba geomagnetic disturbances in the horizontal component (ΔH), the eastward component (ΔY), and the vertical component (ΔZ) around the time of the Carrington storm. On their basis, we have chronologically revised the interplanetary coronal mass ejection transit time as ≤17.1 hr and located the ΔH peak at 06:20—06:25 UT, revealing a magnitude discrepancy between the hourly and spot measurements (−1691 nT versus −1263 nT). Furthermore, we have newly derived the time series of ΔY and ΔZ, which peaked at ΔY ≈ 378 nT (05:50 UT) and 377 nT (06:25 UT), and ΔZ ≈ −173 nT (06:40 UT). We have also computed their hourly averages and removed their solar quiet field variations in each geomagnetic component to derive their hourly disturbance variations (Dist) with latitudinal weighting. Our calculations have resulted in disturbance variations with latitudinal weighting of Dist Y ≈ 328 nT and Dist Z ≈ −36 nT, and three scenarios of Dist H ≈ −918, −979, and −949 nT, which also approximate the minimum Dst. These data may suggest preconditioning of the geomagnetic field after the August storm (ΔH ≤ −570 nT), which made the September storm even more geoeffective.
A Census of the Bright z = 8.5–11 Universe with the Hubble and Spitzer Space Telescopes in the CANDELS Fields
Authors: Finkelstein Steven L. , Bagley Micaela , Song Mimi , Larson Rebecca , Papovich Casey , Dickinson Mark , Finkelstein Keely D. , Koekemoer Anton M. , Pirzkal Norbert , Somerville Rachel S. , Yung L. Y. Aaron , Behroozi Peter , Ferguson Harry , Giavalisco Mauro , Grogin Norman , Hathi Nimish , Hutchison Taylor A. , Jung Intae , Kocevski Dale , Kawinwanichakij Lalitwadee , Rojas-Ruiz Sofía , Ryan Russell , Snyder Gregory F. , Tacchella Sandro
Published: March 2022

We present the results from a new search for candidate galaxies at z ≈ 8.5–11 discovered over the 850 arcmin2 area probed by the Cosmic Assembly Near-Infrared Deep Extragalactic Legacy Survey (CANDELS). We use a photometric-redshift selection including both Hubble and Spitzer Space Telescope photometry to robustly identify galaxies in this epoch at H
160 < 26.6. We use a detailed vetting procedure, including screening against persistence and stellar contamination, and the inclusion of ground-based imaging and follow-up Hubble Space Telescope imaging to build a robust sample of 11 candidate galaxies, three presented here for the first time. The inclusion of Spitzer/IRAC photometry in the selection process reduces contamination, and yields more robust redshift estimates than Hubble alone. We constrain the evolution of the rest-frame ultraviolet luminosity function via a new method of calculating the observed number densities without choosing a prior magnitude bin size. We find that the abundance at our brightest probed luminosities (M
UV = − 22.3) is consistent with predictions from simulations that assume that galaxies in this epoch have gas depletion times at least as short as those in nearby starburst galaxies. Due to large Poisson and cosmic variance uncertainties, we cannot conclusively rule out either a smooth evolution of the luminosity function continued from z = 4–8, or an accelerated decline at z > 8. We calculate that the presence of seven galaxies in a single field Extended Groth Strip is an outlier at the 2σ significance level, implying the discovery of a significant over-density. These scenarios will be imminently testable to high confidence within the first year of observations of the James Webb Space Telescope.
Standing Sausage Perturbations in Solar Coronal Loops with Diffuse Boundaries: An Initial Value Problem Perspective
Authors: Li Bo , Chen Shao-Xia , Li Ao-Long
Published: March 2022

Working in pressureless magnetohydrodynamics, we examine the consequences of some peculiar dispersive properties of linear fast sausage modes (FSMs) in one-dimensional cylindrical equilibria with a continuous radial density profile (ρ
0(r)). As recognized recently on solid mathematical grounds, cutoff axial wavenumbers may be absent for FSMs when ρ
0(r) varies sufficiently slowly outside the nominal cylinder. Trapped modes may therefore exist for arbitrary axial wavenumbers and density contrasts, their axial phase speeds in the long-wavelength regime differing little from the external Alfvén speed. If these trapped modes indeed show up in the solutions to the associated initial value problem (IVP), then FSMs have a much better chance to be observed than expected with classical theory and can be invoked to account for a considerably broader range of periodicities than practiced. However, with axial fundamentals in active region loops as an example, we show that this long-wavelength expectation is not seen in our finite-difference solutions to the IVP, the reason for which is then explored by superposing the necessary eigenmodes to construct solutions to the same IVP. At least for the parameters we examine, the eigenfunctions of trapped modes are characterized by a spatial extent well exceeding the observationally reasonable range of the spatial extent of initial perturbations, meaning a negligible fraction of energy that a trapped mode can receive. We conclude that the absence of cutoff wavenumbers for FSMs in the examined equilibrium does not guarantee a distinct temporal behavior.
Numerical Solutions of the External Field Effect on the Radial Acceleration in Disk Galaxies
Authors: Chae Kyu-Hyun , Milgrom Mordehai
Published: March 2022

In modified Newtonian dynamics (MOND)-based theories, the strong equivalence principle is generically broken in an idiosyncratic manner, manifested in the action of an “external field effect” (EFE). The internal dynamics in a self-gravitating system is affected even by a constant external field. In disk galaxies, the EFE can induce warps and modify the rotational speeds. Due to the nonlinearity of MOND, it is difficult to derive analytic expressions of this important effect in a disk. Here we study numerically the EFE in two nonrelativistic Lagrangian theories of MOND: the “Aquadratic–Lagrangian” theory (AQUAL) and “Quasilinear MOND” (QUMOND). For AQUAL, we consider only the axisymmetric field configurations with the external field along the disk axis, or a spherical galaxy with test-particle orbits inclined to the external field. For the more manageable QUMOND, we also calculate the three-dimensional field configurations, with the external field inclined to the disk axis. We investigate in particular to what degree an external field modifies the quasi-flat part of rotation curves. While our QUMOND results agree well with published numerical results in QUMOND, we find that AQUAL predicts weaker EFE than published AQUAL results. However, AQUAL still predicts stronger EFE than QUMOND, which demonstrates current theoretical uncertainties. We also illustrate how the MOND prediction on the rising part of the rotation curve, in the inner parts, depends largely on disk thickness but only weakly on a plausible external field for a fixed galaxy model. Finally, we summarize our results for the outer parts as an improved, approximate analytic expression.
Thermal Processing of Jupiter-family Comets during Their Chaotic Orbital Evolution
Authors: Gkotsinas Anastasios , Guilbert-Lepoutre Aurélie , Raymond Sean N. , Nesvorny David
Published: March 2022

Evidence for cometary activity beyond Jupiter’s and Saturn’s orbits—such as that observed for Centaurs and long-period comets—suggests that the thermal processing of comet nuclei starts long before they enter the inner solar system, where they are typically observed and monitored. Such observations raise questions as to the depth of unprocessed material and whether the activity of Jupiter-family comets (JFCs) can be representative of any primitive material. Here we model the coupled thermal and dynamical evolution of JFCs, from the moment they leave their outer solar system reservoirs until their ejection into interstellar space. We apply a thermal evolution model to a sample of simulated JFCs obtained from dynamical simulations that successfully reproduce the orbital distribution of observed JFCs. We show that due to the stochastic nature of comet trajectories toward the inner solar system, all simulated JFCs undergo multiple heating episodes resulting in significant modifications of their initial volatile contents. A statistical analysis constrains the extent of such processing. We suggest that primordial condensed hypervolatile ices should be entirely lost from the layers that contribute to cometary activity observed today. Our results demonstrate that understanding the orbital (and thus, heating) history of JFCs is essential when putting observations in a broader context.
A Solar-cycle Study of Coronal Rotation: Large Variations, Rapid Changes, and Implications for Solar-wind Models
Authors: Edwards Liam , Kuridze David , Williams Thomas , Morgan Huw
Published: March 2022

Information on the rotation rate of the corona, and its variation over latitude and solar cycle, is valuable for making global connections between the corona and the Sun, for global estimates of reconnection rates and as a basic parameter for solar-wind modeling. Here, we use a time series of tomographical maps gained from coronagraph observations between 2007 and 2020 to directly measure the longitudinal drift of high-density streamers over time. The method reveals abrupt changes in rotation rates, revealing a complex relationship between the coronal rotation and the underlying photosphere. The majority of rates are between −1.°0 to +0.°5 day−1 relative to the standard Carrington rate of 14.°18 day−1, although rates are measured as low as −2.°2 day−1 and as high as 1.°6 day−1. Equatorial rotation rates during the 2008 solar minimum are slightly faster than the Carrington rate, with an abrupt switch to slow rotation in 2009, then a return to faster rates in 2017. Abrupt changes and large variations in rates are seen at all latitudes. Comparison with a magnetic model suggests that periods of equatorial fast rotation are associated with times when a large proportion of the magnetic footpoints of equatorial streamers are near the equator, and we interpret the abrupt changes in terms of the latitudinal distribution of the streamer photospheric footpoints. The coronal rotation rate is a key parameter for solar-wind models, and variations of up to a degree per day or more can lead to large systematic errors over forecasting periods of longer than a few days. The approach described in this paper gives corrected values that can form a part of future forecasting efforts.
Observations of Extremely Strong Magnetic Fields in Active Region NOAA 12673 Using GST Magnetic Field Measurement
Authors: Lozitsky Vsevolod , Yurchyshyn Vasyl , Ahn Kwangsu , Wang Haimin
Published: March 2022

We present a detailed study of very strong magnetic fields in the NOAA Active Region (AR) 12673, which was the most flare productive AR in solar cycle 24. It produced four X-class flares including the X9.3 flare on 2017 September 6 and the X8.2 limb event on September 10. Our analysis is based on direct measurements of full Zeeman splitting of the Fe i 1564.85 nm line using all Stokes I, Q, U, and V profiles. This approach allowed us to obtain reliable estimates of the magnitude of magnetic fields independent of the filling factor and atmosphere models. Thus, the strongest fields up to 5.5 kG were found in a light bridge (LB) of a spot, while in the dark umbra magnetic fields did not exceed 4 kG. In the case of the LB, the magnitude of the magnetic field is not related to the underlying continuum intensity, while in the case of umbral fields we observed a well-known anticorrelation between the continuum intensity and the field magnitude. In this study, the LB was cospatial with a polarity inversion line of δ-sunspot, and we speculate that the 5.5 kG strong horizontal fields may be associated with a compact twisted flux rope at or near the photosphere. A comparison of the depth of the Zeeman π and σ components showed that in the LB magnetic fields are, on average, more horizontal than those in the dark umbra.
The Habitable Zones of Rapidly Rotating Main Sequence A/F Stars
Authors: Ahlers John P. , Fromont Emeline F. , Kopparappu Ravi , Cauley P. Wilson , Haqq-Misra Jacob
Published: March 2022

We investigate how rapid stellar rotation commonly seen in A/F stars can influence planet habitability. Specifically, we model how rapid rotation influences a planet’s irradiation and determine the location of the habitable zone for stars in the mass range 1.3 M
⊙ ≤ M
⋆ ≤ 2.2 M
⊙. Rapid stellar rotation can dramatically change a star’s luminosity and spectral energy distribution, and therefore can affect the habitability of any surrounding planets. Stars of mass M
⋆ ≳ 1.3 M
⊙ commonly rotate near their breakup speeds, which causes two effects relevant to planet habitability. First, these stars flatten into oblate spheroids with shorter polar radii and elongated equatorial radii. Second, rapid rotation induces a pole-to-equator temperature gradient on the surface of these stars. Using a 1D climate model, we calculate the inner and outer edges of the habitable zone of well-known rapid rotators and average theoretical stars in our stellar mass range. We find that, in general, rapid rotation causes the habitable zone to reside closer in than for a nonrotating equivalent star. We also find that gravity darkening dramatically reduces stellar UV emission, which combats the common assumption that high-mass stars emit too much UV light for habitable worlds. Overall, we determine that rapid stellar rotation has important consequences for the overall habitability of a system and must be accounted for both when modeling exoplanet environments and in observation of planets around high-mass stars.
The Composition and Power of the Jet of the Broad-line Radio Galaxy 3C 120
Authors: Zdziarski Andrzej A. , Phuravhathu Dakalo G. , Sikora Marek , Böttcher Markus , Chibueze James O.
Published: March 2022

We calculated the electron–positron pair-production rate at the base of the jet of 3C 120 due to collisions of photons from the hot accretion flow using the measurement of its average soft gamma-ray spectrum by the Compton Gamma Ray Observatory. We found that this rate approximately equals the flow rate of leptons emitting the observed synchrotron radio-to-IR spectrum of the jet core, calculated using the extended jet model following Blandford & Königl. This coincidence shows the jet composition is likely to be pair dominated. We then calculated the jet power in the bulk motion of ions and found it greatly exceeds that achievable by the magnetically arrested disk scenario for the maximum black hole spin unless the jet contains mostly pairs. Next, we found that the magnetic flux through the synchrotron-emitting jet equals the maximum poloidal flux that can thread the black hole. Finally, we compared two estimates of the magnetization parameter at the onset of the synchrotron emission and found they are in agreement only if pairs dominate the jet content.
PIVKA-II as a surrogate marker for prognosis in patients with localized hepatocellular carcinoma receiving stereotactic body radiotherapy
Authors: Cho Ick Joon , Jeong Jae-Uk , Nam Taek-Keun , Joo Young-Eun , Cho Sung-Bum , Kim Yong-Hyub , Song Ju-Young , Yoon Mee Sun , Ahn Sung-Ja , Chung Woong-Ki
Published: March 2022

Purpose: This study aimed to determine the correlation between protein induced by vitamin K absence or antagonist-II (PIVKA-II) and stereotactic body radiotherapy (SBRT) in patients with hepatocellular carcinoma (HCC). Materials and Methods: Sixty-one patients received SBRT between 2015 and 2020 with a median dose of 48 Gy (range, 39 to 60 Gy) with a median of 4 fractions. Changes in tumor markers before and after SBRT were analyzed. Results: The median follow-up period was 31 months (range, 12 to 64 months). The estimated 2-year in-field failure-free survival, progression-free survival (PFS), and overall survival rates were 82.0%, 39.3%, and 96.7%, respectively. Patients with decreased PIVKA-II levels through SBRT had significantly few in-field failures (p = 0.005). Patients with PIVKA-II levels of ≤25 mAU/mL after SBRT had significantly long PFS (p = 0.004). Conclusion: PIVKA-II could be a useful surrogate marker for response or survival outcomes in patients with localized HCC receiving SBRT.
Association between Quality of Diets and the Risk of Obesity Complication among a Sample of Egyptian Obese Women
Authors: Hassan Nayera E. , Elshebini Salwa , Hassan Nihad , El hussieny Mohamed S. , Selim Mohamed , Amin Darine Helmy , Nageeb Ayat , Ibrahim Mohammed , Khalil Aya
Published: March 2022

Abstract
Background: The fundamental cause of obesity and overweight is an energy imbalance between calories consumed and calories expended. The aim of this study was to identify the awareness of a sample of Egyptian women about eating healthy diet, using Dietary Approaches to Stop Hypertension (DASH) diet as an example.
Methods: This study is a cross-sectional study included 109 Egyptian women random chosen, with age range 25-60 years. Full clinical examinations, anthropometric parameters, dietary recalls, and socioeconomic parameters were recorded. Biochemical analysis was done including serum lipid profile.
Results: Data showed that a large percentage of the participants (56.9%) were consuming a poor-quality diet, while 20.0% were consuming intermediate quality diet. Only 16.5% and 9.2% of them were aware of eating a good and high-quality healthy diet. Data shows that the calories, macronutrients, saturated fatty acids (SFAs), cholesterol and sodium intake among both poor and the intermediate groups were higher, while their intake of the monounsaturated fatty acids (MUFAs), poly unsaturated fatty acids (PUFAs), fiber, important vitamins and the minerals, was significantly low. The mean values of the BMI, body fat %, FFM (Fat Free Mass), waist circumference, visceral fat and LDL-C values showed significant differences between the groups at p≤ 0.05- 0.001, in favor of the good and high groups.
Conclusions: Data of this study revealed that poor quality diet was widespread among studied Egyptian women sample; right food choice was associated with the educational level. So, helping individuals to make the right food choices will help in improve diet quality and health.
Effects of Channa striata Extract on Albumin Serum and Neutrophil-to-Lymphocyte Ratio in Hyperglycemic Rats with Wound Injury: A Randomized Control Study
Authors: Taslim Nurpudji Astuti , Fitriana Nur , Suprapti Ni Luh Eka , Marsella Caroline Prisilia , Bukhari Agussalim , Rasyid Haerani , Aminuddin Aminuddin , As’ad Suryani , Aman Andi Makbul , Madjid Mardiana
Published: March 2022

BACKGROUND: Patients with hyperglycemia often experience slow wound healing due to poor circulation. Extract from the striped snakehead fish Channa striata has anti-inflammatory properties and a high albumin level. It has been widely used to accelerate wound healing in a post-operative setting.

AIM: This study evaluated the effect of the C. striata extract Pujimin Plus® on the albumin serum level and neutrophil-to-lymphocyte ratio (NLR) in hyperglycemic rats experiencing wound injury.

METHODS: This randomized controlled experiment was performed in 30 streptozotocin-induced hyperglycemic adult male Wistar rats (Rattus norvegicus). The rats were intentionally wounded, and the albumin and NLR levels were evaluated regularly. Overall, 15 rats in the intervention group were given 81 mg/day C. striata extract, and 15 rats in the control group received sodium-carboxymethyl cellulose as a placebo for 10 days.

RESULTS: After 10 days of intervention the albumin level in the intervention group was higher than that in the control group (2.66 ± 0.36 vs. 2.46 ± 0.13 g/dL, p > 0.05); the intervention group also showed a lower neutrophil level (23.22% vs. 26.98%, p > 0.05), a higher lymphocyte level (65.66% vs. 62.16%, p > 0.05), and a lower NLR value (0.37 vs. 0.45, p > 0.05). None of these results was statistically significant.

CONCLUSION: There was a possible positive effect of C. striata extract on albumin serum level and NLR value following wound injury in hyperglycemic rats.
Peculiarities of Action of Catecholamines and their Metabolites in the Regulation of Cardiomyocyte Enzymes
Authors: Tapbergenov Salavat , Sovetov Bakytbek , Kairkhanova Ynkar , Smailova Zhanargul
Published: March 2022

Абстрактный
Background: Myocardial ischemia is accompanied by a significant increase in adrenaline content in the heart. By its nature, sympathetic hyperactivation is accompanied by increased formation of products of enzymatic and non-enzymatic metabolism of adrenaline and its analogues, which can change the use of ATP by cells, change the activity of mitochondrial and cytosolic enzymes, contributing to disruption of bioenergetic adaptation, antioxidant defense system and levels of intercellular modulators such as AMP and adenosine. The study objective was to explore the features of adrenaline and its analogues in the regulation of the activity of mitochondrial and cytoplasmic enzymes of cardiomyocytes.
Methods: The experiment was carried out on 65 three-month-old male Wistar rats weighing 60-190 g. To study the effects of catecholamines and their metabolites in the regulation of mitochondrial and cytoplasmic enzymes activity of cardiomyocytes, experimental rats were put to death by intraperitoneal injection of 10% ketamine in an amount of 0.25 mg per 100 g. Activity of mitochondrial succinate dehydrogenase, cytochrome c oxidase, mitochondrial DNP-activated ATPase, adenosine deaminase (AD), AMP deaminase (AMPD), glutathione reductase (GR) and glutathione peroxidase (GPO) were determined.
Results: Dopamine has the greatest activating effect on cardiac mitochondrial ADH, adrenaline on CHO, and adrenochrome and adrenoxyl on ATPase. Isadrine and dopamine reduce cardiac AMPase activity. An activating effect on cardiac mitochondrial AMP deaminase was found only in norepinephrine. 
Заключение. В кардиомиоцитах адреналин активирует цитозольные ферменты метаболизма пуриновых нуклеотидов AD и AMPD, а также повышает уровень перекисного окисления липидов (MDA и DC). Это доказывает, что адреналин, воздействуя на адренорецепторные механизмы, приводит организм в состояние окислительного стресса. Гормоны-медиаторы симпато-адреналовой системы адреналин, дофамин, норадреналин, изадрин и метаболиты катехоламинов (адренохром и адреноксил), изменяют активность ферментов митохондриальной дыхательной цепи кардиомиоцитов, а также регулируют процессы тканевого дыхания, переводя митохондрии в состояние «рыхлого» состояния. «сочетание дыхания и фосфорилирования.
The Effect of Periapical Radiography X-Ray Radiation on the Number of Leukocytes in Mice (Mus musculus)
Authors: Salmah Yenny , Achmad Harun , Sukmana Bayu Indra , Wajdiyah Ummi , Dachlan Nirwana , Zahbia Zia Nurul , Nadia En , Utamy Try Diana
Published: March 2022

BACKGROUND: Periapical radiographic X-ray radiation has ionization energy which can cause cell damage in the body such as damage to the hematopoietic stem cell system in the bone marrow which results in inhibition or cessation of the hematopoiesis process, resulting in a decrease in the number of blood cells, especially leukocytes. A decrease in the number of leukocytes can make the body susceptible to infection with bacteria, viruses, fungi, and other agents that can attack tissues in the oral cavity. AIM: This study aims to determine the effect of periapical radiographic X-ray radiation on the number of leukocytes in mice (Mus musculus). METHODS: This research is a true experimental study with a posttest-only design with a control group design. The sample in this study was 24 mice, male, bodyweight 25–30 g and age 3–4 months which were divided into four groups, namely, the control group and the treatment group, namely, 1, 7, and 10-times exposure to periapical radiography X-ray radiation. RESULTS: The results showed that there was a decrease in the leukocyte count of mice at 1, 7, and 10 times of exposure, which was obtained by comparing the leukocyte count of the control group and the treatment group. The number of leukocytes in the control group was 8.16 × 103/μL, the number of leukocytes in the treatment group with 1, 7, and 10 exposures in a row was 7.61 × 103/μL, 6.03 × 103/μL, and 5.20 × 103/μL. The results of statistical tests using One-Way Analysis of variance and post hoc Bonferroni showed a significant decrease in the number of leukocytes (p < 0.05), namely, in the control group with seven exposures, the control group with ten exposures, and the 1-time exposure group with the 10-time exposure group. CONCLUSION: There is a decrease in the number of leukocytes in mice due to periapical radiographic X-ray radiation.
The Acceptance and Use of Electronic Medical Records in Developing Countries within the Unified Theory of Acceptance and Use of Technology Framework
Authors: Faida Eka Wilda , Supriyanto Stefanus , Haksama Setya , Markam Hosizah , Ali Amir
Published: March 2022

BACKGROUND: The Indonesian Ministry of Health requires hospitals to record and report all activities in the Hospital Management Information System (SIMRS). However, the disruptive use of software, hardware, and Brainware has reduced its effective management and usability, which has become a separate workload. Electronic Medical Record (EMR) is one of the important implementations of SIMRS because it relates to the ability to identify information, results, history taking, examinations, and records of all patients. Furthermore, it has become a current global trend for most hospitals and has also been used as a substitute for paper medical records.

AIM: This study aims to collect and identify the user characteristic, technology used, and other variables influencing the acceptance and use of information and technology systems based on the unified theory of acceptance and use of technology (UTAUT) model.

METHOD: Secondary data were obtained from scientifically published journals online in the form of original articles that are accessed in full text with the help of search engines such as Springer link, Proquest, PubMed, and Prospero.

RESULT: It was found that the most dominant technology system in hospitals outside the use of HIS, Electronic Health Record (EHR), physician assistants, E-Prescribing, Telemedicine, extended producer responsibility, and Technology solution for tuberculosis was EMR. It had the largest influence variable in several studies based on the UTAUT model. The most dominant characteristics of users were women between the ages of 20 and 30 years with 0 and 5 years working experience, and also 60% were nurses. The result also showed that 17 other variables had influenced the use of information and technology systems in the UTAUT model.

Conclusion: Literature study provides evidence that acceptance and use of health information technology systems, especially RME in hospitals influenced by the main variable UTAUT. Variables related to technical aspects, behavior, and user characteristics as new endogenous and new exogenous mechanisms. Management of health service providers in increasing acceptance and use of EMR needs to pay attention to the availability of infrastructure, user factors are also an important concern in helping to deal with problems in developing countries.
Factors Influence the Knowledge, Attitudes, and Behavior of Community about COVID-19 Vaccine in Medan City, Indonesia
Authors: Rumahorbo Kevin Nicholas , Syarifah Siti , Anggraini Dwi Rita , Siregar Kamal Basri , Amelia Rina , Sari Mutiara Indah
Published: March 2022

BACKGROUND: COVID-19 has been pandemic and causes death worldwide. 905 people died in the capital of North Sumatra, Medan City, Indonesia until November 2021. Medan city was once a red zone including Medan Denai District, the first dose of vaccination coverage was still 60% (1,476,248 people) and the second dose was still 45.8% (1,116,271 people) in November 2021. Public awareness of the importance of COVID-19 vaccination is needed to succeed in vaccination programs and reduce the rate of COVID-19 cases. Nevertheless, research related to public awareness about COVID-19 vaccination was still little done in Medan city.

AIM: In this study, we analyzed the factors that influence the knowledge, attitudes, and behavior of community about COVID-19 vaccine in Medan Denai District of Medan City.

METHODS: This study was a cross-sectional study with a validated questionnaire approach in 100 respondents. Data collection were conducted from September to November 2021. The questionnaire consisted of 36 questions to assess the level of knowledge, attitudes, and behavior. Statistical analysis was done using IBM Statistical Package for the Social Sciences v.26, p < 0.05 was statistically significant.

RESULTS: Knowledge level is sufficient by 50%, good attitude by 99%, good behavior by 82%, the majority of respondents were in the age range of 17–25 years (75%), women (58%), high school education level (63%), jobless (42%), low income (62%), and had a religion (100%). More than 80% of respondents knew the benefits of the vaccine, how the vaccine worked, vaccine brands available in Indonesia, 76% had been vaccinated and 97% agreed to be vaccinated. We found a relation between knowledge with community behavior, education level, and vaccination history with knowledge, religion with community attitudes, and COVID-19 vaccination history with community behavior (p < 0.05).

CONCLUSIONS: Respondents had sufficient knowledge, good attitudes and good behavior related to the COVID-19 vaccine. The level of education, religion, and COVID-19 vaccination history affected the knowledge, attitudes, and behavior of people about the COVID-19 vaccine in Medan Denai District, Medan city, Indonesia.
The Effect of Leadership Style on the Performance of Pharmaceutical Personnel in the Local Hospitals in Yogyakarta
Authors: Hadning Ingenida , Ghozali M.T. , Layland Adam , Umbara Dani , Lukluk Riza
Published: March 2022

The leader and employee are essential in the organization as they have a key role in running it. The leadership style becomes a factor in improving the performance and loyalty of employee in addition to affecting the organizational atmospheres. This study was aimed to determine the effect of leadership style on the performance of pharmaceutical personnel in the local hospitals of the Special Region of Yogyakarta. This non-experimental study used a correlational model, and the design of the study applied a cross sectional approach. To determine the size of sample, it utilized a total sampling technique. The samples involved 180 pharmaceutical personnel, consisting of 31 males and 149 females. The data were collected from 5 local hospitals of the Special Region of Yogyakarta by using a questionnaire. The statistical tests included validity and reliability, normality, descriptive, and correlation. The results of study, based on the descriptive analysis, found that the most dominant leadership styles of the 5 hospitals included directive and participatory leadership styles. Meanwhile, the correlation analysis confirmed that the variables of leadership style had a positive effect on the performance of pharmaceutical personnel at PKU Muhammadiyah Gamping, Public Hospital of Wates, and Public Hospital of Wonosari. The variables unfortunately had negative effect at the PKU Muhammadiyah Yogyakarta and Panembahan Senopati. The leadership style had a positive direction on the performance of pharmaceutical personnel of the 3 local hospitals, while the other 2 hospitals were negative.
The Role of Plasma D-dimer Level Measurement to Assist Breast Cancer Histopathological Grading
Authors: Hermansyah Dedy , Firsty Naufal Nandita , Nasution Rifwanul Basir , Andra Cut Aryfa , Lubis Anggia Chairuddin
Published: March 2022

BACKGROUND: The histopathological grades identification is unquestionably essential to determine the most effective approach in oncologic management, specifically in breast cancer (BC) as the most common malignancy diagnosed worldwide. Complex and micro-level alterations of coagulation function of the host may occur at some point since the reactivity of the tumor cells byproduct will dysregulate its physiologic function; as represented by the higher rate of fibrinolysis which in turn increase the D-dimer level.
AIM: The study aims to provide the correlation between the level of d-dimer and histopathological grades in BC patients.
METHODS: A total of 111 females with confirmed BC were included in this study, which was conducted from March to September 2021 at the teaching hospital of Universitas Sumatera Utara. After thorough clinical information analysis, the histopathological examination (HPE) was conducted to confirm the malignancy and graded based on the Bloom-Richardson grading system; therefore, the HPEs were classified into slow/moderate or poorly differentiated. The D-dimer value of >0.5 mg/L was indicated as an elevated level.
RESULTS: From the 102 eligible patients to be included in the final evaluation, it was observed that 46.1% and 52.9% of the participants were presumed with elevated D-dimer level and high-grade carcinoma, respectively. The elevated D-dimer level results percentage was substantially more common in high-grade BC (72.3%, the positive predictive value analysis. Other parameters, for example, sensitivity (63.0%), specificity (72.9%), and negative predictive value (63.6%) were found to be statistically accurate (p < 0.001).
CONCLUSION: The influence of tumor cells differentiation toward coagulation system or fibrin metabolism dysfunction is observable in this study. Hence, the role D-dimer level measurement should be investigated further to assist the BCs’ grading determination workup.