bluuebunny/crossref_metadata_2025_split huggingface dataset:
Multiresistente Bakterien bei Patienten in Krankenhäusern und Arztpraxen sowie bei Bewohnern von Altenpflegeheimen in Sachsen – Ergebnisse einer Prävalenzstudie 2017/2018
Authors: Sommer Lydia , Hackel Tilo , Hofmann Axel , Hoffmann Julia , Hennebach Ekkehard , Köpke Beate , Sydow Wiebke , Ehrhard Ingrid , Chaberny Iris F. 
Published: May 2020

Zusammenfassung
Ziel In drei Untersuchungsgruppen (Krankenhauspatienten, Bewohner in Altenpflegeheimen und Patienten hausärztlicher Praxen) sollte die Prävalenz von Methicillin-resistentem Staphylococcus aureus (MRSA), multiresistenten gramnegativen stäbchenförmigen Bakterien (MRGN) sowie Vancomycin-resistenten Enterokokken (VRE) ermittelt werden. Zudem sollten Risikofaktoren für ein Trägertum untersucht werden.
Methodik Das Screening auf multiresistente Erreger (MRE) erfolgte als Punktprävalenzuntersuchung bei freiwillig teilnehmenden Personen mittels Nasen-, Rachen- und Rektalabstrich bzw. Stuhlprobe in 25 Krankenhäusern, 14 Altenpflegeheimen sowie 33 Hausarztpraxen in 12 von 13 Landkreisen in Sachsen. Verdächtige Isolate wurden phänotypisch sowie z. T. molekularbiologisch weiter untersucht. Die Teilnehmer füllten einen Fragebogen zu vermuteten Risikofaktoren für eine MRE-Besiedlung aus, deren Angaben statistisch mittels Korrelationsanalysen ausgewertet wurden.
Ergebnisse 1 718 Personen, davon 629 aus Krankenhäusern, 498 aus Altenpflegeheimen und 591 aus Arztpraxen, wurden untersucht. Insgesamt waren 8,4% aller Teilnehmer Träger eines MRE. 1,3% wurden positiv auf das Vorliegen eines MRSA, 5,2% auf 3MRGN, 0,1% auf 4MRGN und 2,3% auf VRE getestet. Neun Personen waren mit mehr als einem MRE besiedelt. Folgende unabhängige Faktoren konnten signifikant mit dem Nachweis eines MRE in Zusammenhang gebracht werden: Vorhandensein eines Pflegegrads (MRE), männliches Geschlecht (MRE/VRE), aktuelle Antibiose (MRE/VRE), Antibiose innerhalb der letzten 6 Monate (MRE/MRSA/3MRGN/VRE), aktuelle Tumorerkrankung (MRE/3MRGN), periphere arterielle Verschlusskrankheit (pAVK) (MRSA) sowie eine Harninkontinenz (3MRGN).
Schlussfolgerungen Nach unserem Wissensstand stellt diese Studie die erste Untersuchung zur Prävalenz unterschiedlicher multiresistenter Erregergruppen in diesen 3 Untersuchungsgruppen und erstmals dabei auch unter ambulanten Patienten in Deutschland dar. Dabei repräsentierten 3MRGN die am häufigsten nachgewiesene Erregergruppe und fanden sich auch in jüngeren Altersgruppen wieder, VRE wurden fast ausschließlich kumuliert in einzelnen Kliniken nachgewiesen. Neben aktueller und stattgehabter Antibiose konnten insbesondere das Vorliegen einer pAVK für MRSA-Nachweise, Harninkontinenz für 3MRGN-Nachweise sowie eine aktuelle Tumorerkrankung für MRE- und 3MRGN-Nachweise als unabhängige Risikofaktoren bestimmt werden.
Antioxidant, Cytotoxic, and Acetylcholinesterase Inhibitory
Activities of Withanolides from Datura quercifolia
Authors: Jasso Christian , Nieto-Camacho Antonio , Ramírez-Apan MaríaTeresa , Martínez Mahinda , Maldonado Emma 
Published: May 2020

AbstractFive withanolides identified as daturalactone (1) , withanicandrin
(2), withanolide B (3), nicandrin B (4), and
daturalactone 2 (5) were isolated from the aerial parts (flowers,
leaves, and stems) of Datura quercifolia Kunth. Their structures were
determined by analysis of the IR, MS, 1D and 2D NMR spectra. All the
isolates were evaluated for their cytotoxic and antioxidant activities, as
well as for their capacity to inhibit the activity of the
acetylcholinesterase enzyme (AChE). As result, the five withanolides showed
weak cytotoxic and pro-oxidant activities, however, they displayed a
relevant inhibitory activity against AChE, as indicated by the
IC50 values ranging from 1.51 to 12.11 µM. The
differences in AChE inhibition seem to be related to the functional group at
C-12.
Convergence and divergence in the use of third-person atonic pronouns in Madrid and Malaga
Authors: Díaz Montesinos Francisco , Paredes García Florentino 
Published: May 2020

Abstract
This paper describes the linguistic situation of pronominal clitics used as direct objects (DO) in two Spanish
speech communities, Malaga and Madrid, which use, respectively, the etymological system and referential system, the two basic
clitic systems that have been described for Spanish. The initial hypothesis is that both communities are undergoing a process of
convergence with the educated pan-Hispanic model, which permits leísmo (use of le) with a
masculine, singular person. Thus, the analyses successively restricted the corpus of clitics with the aim of determining how
linguistic and social conditions affect each type of leísmo: apparent and real leísmo, leísmo
with things, leísmo with a feminine person, leísmo with animals, leísmo with a
masculine, plural person, and leísmo with a masculine, singular person.
Establishing a method to determine impact force in tennis – a preliminary study
Authors: Baktiar S B , Sujae I H , Kudo S , Zakariah W R Wan , Ong A , Hamill J 
Published: May 2020

Abstract
The purpose of this study was to establish a method to estimate impact force in tennis forehand stroke to determine if differences in string tension would affect impact force. This is a preliminary study using only one participant. Estimates were determined using kinematic data and data obtained from strain gauges. Preliminary data on peak resultant impact force estimates were within the range of those reported in the literature. Peak resultant force estimates were larger for higher string tension rackets and lower string tension in the racquets possibly due to differences in coefficient of restitution. Data estimated from this study, regardless of string tension, may give a better representative of peak resultant impact force as the data were not filtered.
Effects of interface state density on the carrier transport and performance of metal-insulator-semiconductor (MIS) type thin film solar cells
Authors: Oktasendra Fandi , Hidayat Rahmat , Utama Rizky Indra 
Published: May 2020

Abstract
Interface state density plays a significant role in determining the behaviour and characteristics of optoelectronic devices. In this paper, we investigated the effect of the interface state density on the carrier transport and performance in ZnO based-metal-instulator-semiconductor (MIS) type solar cells. Semi-analytical calculations were performed to obtain the solar cell’s performance characteristics, i.e., the short circuit current, open-circuit voltage, fill-factor, and efficiency. Most possible carrier transport mechanisms including minority carrier diffusion, field emission (tunnelling) and carrier recombination were taken into account in investigating the role interface state density on the current profile. It was found that the effect of interface state density is dependent on the oxide thickness. At thicknesses higher than the critical thickness of the oxide layer the increase of the density of states causes the performance of the solar cells to drop.
Microwave absorption properties of Fe3O4/PANi nanocomposites synthesized by sol-gel methods
Authors: Yulfriska Nidya , Affandi Zurian , Yohandri  , Dwiridal Letmi , Ramli Ramli 
Published: May 2020

Abstract
The technological advances in the radar field are currently growing. So that it requires an absorbent material that has a high absorption capacity so that it can be applied as Radar Absorbent Material (RAM). The RAM made in this study is nanocomposite material which consists of magnetic material based on natural iron sand Fe3O4 and PANi conductive polymer. Fe3O4/PANi nanocomposite was made using the sol-gel method with a percentage combination of Fe3O4/PANi 30%, 40%, 50%, 60% and 70%. Fe3O4/PANi was characterized using XRD and VNA. At the culminate of XRD characterization, it was exposed that successfully synthesized Fe3O4/PANi nanocomposite using the sol-gel method. Fe3O4/PANi is a material that can be used as a microwave absorber, this is indicated by the results of characterization using VNA. In the C-Band (4-8 GHz) the maximum reflection loss is found in Fe3O4/PANi samples (40%) of -28,674 dB at a frequency of 6 GHz by a coefficient absorption of 0.0368 and absorption percentage of 96.32%. Whereas in the X Band (8-12 GHz) maximum reflection loss was obtained in the Fe3O4/PANi sample (60%) of -24.3533 dB at a frequency of 11.76 GHz, by a coefficient absorption is 0.0605 and a absorption percentage of 93.94%.
Modeling of aquifer using vertical electrical sounding data with kriging interpolation in Padang City
Authors: Octova A , Gusman M , Razi P , Putra R R , Putra A E 
Published: May 2020

Abstract
Aquifer is an underground layer of water. Currently, many residents of Padang do not know the exact position of the aquifer. Many drilling activities have been carried out to find ground water. But the results are not in accordance with the predetermined depth targets. This situation will be affected to the costs incurred for drilling. This study aims to model aquifers in Padang and find out their depth and thickness. One way to identify aquifers is to use geoelectrical resistivity method. In this study, researchers used a one-dimensional vertical electrical sounding (VES). The collection of geoelectrical sounding data is spread in 36 points in Padang. To modeling the aquifer layer, kriging interpolation method is used. Based on the results of processing rock resistivity models, it was found that the average aquifer depth in Padang is about 6.23 meters, with the shallow depth in 1.01 meters and the deepest in 20.02 meters. While the average thickness of aquifers is about 7.47 meters, with the thinnest thickness in 1.68 meters and the thickest in 11.74 meters. The aquifer layer was identified as unconfined aquifer.
Land deformation modelling of Taiwan earthquake using interferometry technique
Authors: Razi Pakhrur , Sri Sumantyo Josaphat Tetuko , Yulkifli  , Widodo Joko , Perissin Daniele , Jefriza  
Published: May 2020

Abstract
A strong earthquake with M 6.4 in 14 km shallow depth occurs in the Eastern of Taiwan. To clarify the land deformation model and area damage covered, the SAR data of Sentinel-1A/B in ascending and descending orbit extracted. The data is collected from coseismic and post-seismic. In processing SAR data, Differential Interferometry Synthetic Aperture Radar (D-InSAR) technique applied. The result presents significant deformation reach to 250 millimeters in line of sight (LOS) for ascending and descending orbit.
Biosorption of Cd (II) ion from aqueous solution using immobilized Lengkeng (euphoria longan lour) shell
Authors: Kurniawati Desy , Bahrizal  , Marfania Cillia 
Published: May 2020

Abstract
In this paper, lengkeng shell was immobilization with sodium silica yo remove Cd (II) ion from aqueous soution by biosorption was investigative in a batch system immobilization of lengkeng shell can improve the ability of biosorbent in the process of absorption. The influence of solution pH and particle size. Were evaluated the result showed that the absorbent was good for the removal of Cd (II) ion with biosorption capacity of 22.587 mg/g at pH 5 and 250 μm particle size. Immobilization lengkeng shell showed the highles potential for the removal of toxic metal aqueous solution.
Tube catalyst (TKplus) to crack gasoline fuel vapor in motor vehicle
Authors: Erdawati  , Meta Sari Alvika , Priyatno Sugeng , Ilmar Ramadhan Anwar 
Published: May 2020

Abstract
This study aims to test ability the catalyst tubes to reduce exhaust emissions, save fuel and increase power and torque engine on vehicle. The catalyst tube named TKplus. TKplus catalyst tube filled with NiFe2O3 which was created with sol gel method and calcined on temperature 600°C, characterized by XRD, FTIR, SEM EDX, and BET test. Exhaust emission test results show motor vehicles equipped with TKplus can reduce CO2 emissions; between 36% - 48%, and CO2 emissions fall between 7% - 42%, decrease fuel consumption by 23% - 33%. Dyno test shows that in the presence of TKplus engine performance increased compared with engine without TKplus. At the revolving round of the engine at 5781 rpm or at a speed of 120 km/h, the power value increased by 5.8% and the torque value increased by 7.8% compared to the vehicles not equipped with TKplus value.
Magnetic susceptibility of pre- and post caldera lavas from Maninjau, West Sumatra
Authors: Fadila M R , Rifai H , Ningsih E D , Putra R , Maisonneuve C B de , Forni F , Eisele S , Phua M 
Published: May 2020

Abstract
Lake Maninjau was formed after a caldera forming eruption ∼50,000 years ago. Eventhough this eruption is one of the biggest Quarternary eruptions on Sumatra, it is not studied in detail so far. Only few attempts to study the volcanic processes have been carried out, mainly focusing on stratigraphy, physical volcanologoical parameters and geochemical characterization of volcanic rocks around the lake but the magnetic susceptibility of the pre- and post caldera lava have not been studied. Identification of the magnetic susceptibility of rocks can be done by using Bartington Magnetic Susceptibility Meter type MS2B. This study aims to determine the concentration of magnetic minerals based on the value of magnetic susceptibility in rocks. The Magnetic susceptibility data can be used as initial characteristics to understand the volcanic processes in the past and explain the environmental changes processes. The magnetic susceptibility values obtained ranged from 967.8 × 10−8 m3/kg - 2187.0 × 10−8 m3/kg. This Range indicates that the sample is estimated to be dominated by ilmenite (FeTiO3). Further frequency dependent susceptibility (χfds%) defined as ratio of magnetic susceptibility measured with difference frequency ranges less than 1%. Our results show all the samples are virtually no superparamagnetic and generally dominated by multi-domain (MD) grains.
Preliminary study of inert gas flow analysis on thermal systems with natural convection conditions
Authors: Anshari R , Mairizwan  , Asrizal A , Akmam A 
Published: May 2020

Abstract
Coolant circulation in a thermal system can pass through two circulation pathways, namely natural circulation and forced circulation. Both types of circulation each have advantages and disadvantages. Forced circulation requires special equipment to be able to supply pressure at the beginning of the coolant circulation. If this special equipment fails to function, it can lead to failure of the cooling process and can be fatal to the system that is run. As with natural circulation, this circulation does not require special equipment to drain the coolant. Coolant flow naturally by utilizing different densities of coolant. For systems that work where the axial flow is in the vertical direction, there is an influence of the coolant gravity which affects the coolant flow. This study aims is to analyze how the inert gas flow patterns that occur in a thermal system that applies natural circulation, in this study the focus of the study is on the coolant with the gas phase. This research is a type of experimental research. The analysis was conducted using descriptive and numerical analysis methods. The results of the analysis have been obtained, then applied to a thermal system that applies natural convection to the gas flow. The results of the analysis and application of this study are expected to provide meaningful input for the development of coolants in thermal systems and specifically in cooling systems for gas-cooled reactors. The results of preliminary studies that have been carried out have obtained basic benchmarks that can be used as guidelines for analyzing the physical conditions of the inert gas flow in the heat system by setting some standard conditions found in thermal systems that are generally used today.
Analyzing magnetic susceptibility and elemental composition of rocks and soil around Danau Diatas, West Sumatra, Indonesia
Authors: Fajri Rizki Nurul , Putra Rizaldi , Afriyeni Pika , Maisonneuve Caroline De , Phua Marcus , Eisele Steffen , Forni Francesca , Rifai Hamdi 
Published: May 2020

Abstract
The rocks on the surface of the earth have different formation process, beginning with the lava of volcanic activity that flow on the surface of the earth and then cool down forming igneous rocks. Rocks derived by volcanic eruptions contain different types of minerals than those formed by sedimentary or metamorphic processes. The aim of study was to evaluate the relation of magnetic susceptibility with the elemental composition of rock and soil around the Danau Diatas. Magnetic susceptibility was measured using Bartington susceptibility meter MS2B and the element composition has been measured by X-Ray Fluorescence. The values of magnetic susceptibility of low frequency (χlf) obtained for rock are 2332×10−8 m3/Kg, 2161,7×10−8 m3/Kg, and 2791,6×10−8 m3/Kg, while the values of magnetic susceptibility of low frequency (χlf) obtained for soils are 802,4×10−8 m3/Kg, 779,8×10−8 m3/Kg, and 58,4×10−8 m3/Kg. Rock and soil samples contain several elements such as Fe, Mn and Ti, with Fe having the highest concentration and thus the highest potential influence on their magnetic susceptibility.
The electrical properties of NiFe2O4-PVDF nanocomposite prepared by sol-gel method
Authors: Fadli Alia Hanafia , Yulkifli  , Darvina Yenni , Hartono Ambran , Ramli Ramli 
Published: May 2020

Abstract
NiFe2O4 nanocomposite is a soft magnetic material with low saturation coercivity and magnetization but has high electrical resistivity making this material suitable for electric field applications. The purpose of this study was to determine the effect of NiFe2O4 composition on the electrical properties of NiFe2O4-PVDF nanocomposites prepared by the sol-gel method. Nickel Ferrite nanocomposites - polyvinylidene fluoride (NiFe2O4-PVDF) are made using the sol-gel method and then grown using a spin coating device on a glass substrate. NiFe2O4-PVDF nanocomposites are characterized using X-ray diffraction (XRD) which aims to determine the crystal system, whereas to determine the electrical properties of nanocomposite resistivity Four Point Probe are used. Based on the research conducted on the electrical properties of the NiFe2O4-PVDF nanocomposite, the resistivity value of the NiFe2O4- PVDF nanocomposite with variations in the composition of the PVDF used 10:10, 10:20, and 10:30 was 36.66913333 Ohm.m; 55,63242667 Ohm.m; and 20,85797333 (Ohm.m). While the results of the resistivity values of the nanocomposite NiFe2O4-PVDF with variations in the composition of NiFe2O4 used 10:10, 20:10, and 30:10 are 36,69613333 Ohm.m; 12.07853333 Ohm.m; and 9.616773333 (Ohm.m). It can be concluded that the greater the variation in the composition of NiFe2O4 and PVDF, the resistivity value decreases.
Analysis of potential earthquake energy in the sianok segment
Authors: Raeis Muhammad , Syafriani S 
Published: May 2020

Abstract
Earthquakes are natural disasters that often occur and can harm the people in West Sumatera-Indonesia. One that makes West Sumatra prone to earthquakes is due to the existence of the Sianok segment. In this segment, there was an earthquake on March 3, 2,007 with a magnitude of 6.4 MW. Therefore the writer wants to calculate the amount of potential energy in this segment and the stress local conditions that exist in this segment. The data used is secondary data sourced from the earthquake catalog of the National Earthquake Information Center U.S. Geology Survey (NEIC / USGS) with an observation period of 1992 - 2016. Earthquake data used in this paper is M > 3.5 and h ≤ 70 Km. The processing of potential energy data uses the least square statistical and the local stress analysis is seen based on the a-value and b-value processed using the maximum likelihood calculation. The results of statistical calculations performed on the Sianok segment, the potential energy size for the Sianok segment is as much as 5.3763×1020 ergs since the March 2007 earthquake and the amount of the a-value and b-value in the Sianok segment is 4.51 and 0.808 ± 0.1.
Identification of magnetic minerals in peatland at the section of DD REP B 693 lake Diatas using XRD (X-ray Diffraction)
Authors: Afriyeni Pika , Rifai Hamdi , Maisonneuve Caroline Bouvetde , Forni Francesca , Eisele Steffen , Phua Marcus , Putra Rizaldi 
Published: May 2020

Abstract
Volcanic ash is dispersed into the air when an eruption occurs, whilst the magma that reaches the surface of the Earth cools to form igneous rocks before eventually breaking down to form sedimentary rocks. One of the places where the sedimentation of volcanic ash occurs following eruptions are peatlands. This study aims to determine the type of magnetic minerals contained in the peat at Lake Diatas. The identity of the magnetic minerals was determined using the X-Ray Diffraction method. The samples used in this study are taken based on depth of the peat core where a value of magnetic susceptibility had been measured previously. The results of the x-ray diffraction analysis for each sample obtained are the diffraction angle (2θ), distance between fields (dhkl
), diffraction intensity (I) and relative intensity. Data from this measurement are then compared with magnetic mineral data bases in order to identify the identity of the magnetic minerals within the peat. Analysis of the results obtained using X-Ray Diffraction indicate the identity of the magnetic minerals in the peat samples at Lake Diatas. The dominant type of magnetic mineral is magnetite (Fe3O4), along with othermagnetic mineralssuch as hematite. Magnetite diffracts at 18.3773°, 30.9888°, 31.5036°, 53.6169°, 65.7656°, 78.6261°, hematite at 65.9474°, 75.1103°, 78.8619°, while non-magnetic minerals such as quartz diffracts at 28.0575°, 28.2029°, 52.4150°.
The effect of jogging exercise to improve hemoglobin levels
Authors: Sepriadi  , Jannah Khainur , Eldawaty  
Published: May 2020

Abstract
A low level of hemoglobin is one of the health and fitness issues often experienced by anyone including students. If a student experiences a disorder of Hemoglobin levels, his physical fitness will be affected. The study aims to examine the effect of jogging exercise to improve students’ hemoglobin levels. A quasi-experiment method was employed in this study. The population of this study is a group of students of the Faculty of Sports Science, Universitas Negeri Padang. The samples of this study were 20 students obtanined by purposive sampling technique. The data of hemoglobin levels were measured by the cyanmethemoglobin method. Jogging exercises were carried out 18 times with a frequency of 3 times a week. The results of the study were analyzed statistically using a comparison test (t-test) at a significance level (α) of 5%. The results of this study indicated that the average of hemoglobin level of respondents before being treated was 14.18, while after being given treatment, it was 15.66. This means that there is a significant effect of jogging exercise on increasing students’ haemoglobin level (Hb), with value of tobserved (3.80) > ttable (1.73).