bluuebunny/crossref_metadata_2025_split huggingface dataset:
Design of direct wave cancellation system for high‐frequency CW radar
Authors: Shang Nan , Xin Ke , Yu Changjun , Wang Linwei 
Published: August 2019

When high‐frequency continuous wave (HFCW) radars transmit linear frequency modulated (LFM) continuous wave, there will be direct wave (DW) interference due to temporal continuity. In order to prevent receiver saturation, a DW cancellation system device is developed. This study studies the theoretical model of RF cancellation and derives the DW cancellation ratio formula. Afterwards, a system design scheme for DW cancellation is proposed, where the design and system control algorithms of each module of the cancellation system are mainly studied. Finally, by analysing the DW cancellation technique under multipath effect, it is found that the multipath effect will affect the depth of cancellation. The simulation results verify the correctness of the system design method, the measurement shows a leakage suppression of >15 dB under multipath effects.
Multi-waveband detection of quasi-periodic pulsations in a stellar flare on EK Draconis observed by XMM-Newton
Authors: Broomhall A.-M. , Thomas A. E. L. , Pugh C. E. , Pye J. P. , Rosen S. R. 
Published: August 2019

Context. Quasi-periodic pulsations (QPPs) are time variations in the energy emission during a flare that are observed on both the Sun and other stars and thus have the potential to link the physics of solar and stellar flares.
Aims. We characterise the QPPs detected in an X-ray flare on the solar analogue, EK Draconis, which was observed by XMM-Newton.
Methods. We used wavelet and autocorrelation techniques to identify the QPPs in a detrended version of the flare. We also fitted a model to the flare based on an exponential decay combined with a decaying sinusoid. The flare is examined in multiple energy bands.
Results. A statistically significant QPP is observed in the X-ray energy band of 0.2–12.0 keV with a periodicity of 76 ± 2 min. When this energy band is split, a statistically significant QPP is observed in the low-energy band (0.2–1.0 keV) with a periodicity of 73 ± 2 min and in the high-energy band (1.0–12.0 keV) with a periodicity of 82 ± 2 min. When fitting a model to the time series the phases of the signals are also found to be significantly different in the two energy bands (with a difference of 1.8 ± 0.2 rad) and the high-energy band is found to lead the low-energy band. Furthermore, the first peak in the cross-correlation between the detrended residuals of the low- and high-energy bands is offset from zero by more than 3σ (4.1 ± 1.3 min). Both energy bands produce statistically significant regions in the wavelet spectrum, whose periods are consistent with those listed above. However, the peaks are broad in both the wavelet and global power spectra, with the wavelet showing evidence for a drift in period with time, and the difference in period obtained is not significant. The offset in the first peak in the cross-correlation of the detrended residuals of two non-congruent energy bands (0.5−1.0 keV and 4.5−12.0 keV) is found to be even larger (10 ± 2 min). However, the signal-to-noise in the higher of these two energy-bands, covering the range 4.5−12.0 keV, is low.
Conclusions. The presence of QPPs similar to those observed on the Sun, and other stars, suggests that the physics of flares on this young solar analogue is similar to the physics of solar flares. It is possible that the differences in the QPPs detected in the two energy bands are seen because each band observes a different plasma structure. However, the phase difference, which differs more significantly between the two energy bands than the period, could also be explained in terms of the Neupert effect. This suggests that QPPs are caused by the modulation of the propagation speeds of charged particles.
Kutane Leishmaniasis bei Kindern
Authors: Butsch Florian , von Stebut Esther 
Published: August 2019

ZusammenfassungDie kutane Leishmaniasis manifestiert sich in Endemie-Regionen vorwiegend im Kindesalter, als Reise- und Tropendermatose ist sie bereits gut bekannt. Das klinische Spektrum reicht von der selbst-limitierten kutanen Form bis hin zu disseminierten, rezidivierenden und anderen schweren Verlaufsformen. Eine Viszeralisierung tritt bevorzugt bei Immunsuppression und nach Infektion mit besonderen Leishmania-Subspezies auf und muss ggf. ausgeschlossen werden. Die Diagnose wird anhand einer Probebiopsie von der betroffenen Haut gesichert. Die Therapieoptionen für Kinder umfassen mehrere systemische, als auch lokaltherapeutische Verfahren, die im vorliegenden Beitrag kurz beschrieben werden.
Vitamin-D-Gabe in Hochdosis – Therapieoption bei Multipler Sklerose?
Authors: Reichert Kai 
Published: August 2019

ZusammenfassungKann man Multiple Sklerose mit hohen Dosen von Vitamin D beeinflussen oder gar heilen? Eine Therapie nach dem sog. Coimbra-Protokoll kann nach den Erfahrungen
des Begründers der Therapie, Prof. Cicero Coimbra, mit ca. 7000 Patienten und 10 Behandlungsjahren die Schubrate verringern und die Symptome verbessern oder
sogar zum Abklingen bringen.Nach den bisherigen Erfahrungen des Autors mit mehr als 500 an Multipler Sklerose erkrankten Patienten zeigen sich unter der Hochdosis-Gabe von Vitamin D
deutliche Verbesserungen der Lebensqualität (Fatigue, Blasenstörung); unter einer kalziumarmen Diät sind die Nebenwirkungen gut kontrollierbar.
Multiple Sklerose und funktionelle Ernährungsmedizin
Authors: Böhm Udo 
Published: August 2019

ZusammenfassungDie Sichtweise auf die Krankheit Multiple Sklerose (MS) hat sich in den letzten Jahren verändert. Immer neue Erkenntnisse legen nahe, dass es sich um ein
multikausales Krankheitsbild handelt. Das beeinflusst auch die Therapie: Teilkonzepte mit einseitigen Ansätzen können demzufolge nicht die gewünschten Erfolge
bringen, wenn wichtige mögliche Ursachen außer Acht gelassen werden.Die funktionelle Ernährungsmedizin, die im Beitrag bezüglich der MS vorgestellt wird, kann insbesondere in Kombination mit der Lebensstilmedizin und
Schadstoffreduktion in einem Gesamtkonzept eine tragende Rolle spielen.
Pharmacists’ Attitudes toward Dispensing Naloxone and Medications for Opioid Use Disorder: A Scoping Review of the Literature
Authors: Muzyk Andrew , Smothers Zachary P. W. , Collins Kathryn , MacEachern Mark , Wu Li-Tzy 
Published: August 2019

Background Pharmacists are on the frontline caring for patients at risk of an opioid overdose and for patients with an opioid use disorder (OUD). Dispensing naloxone and medications for OUD and counseling patients about these medications are ways pharmacists can provide care. Key to pharmacists’ involvement is their willingness to take on these practice responsibilities. Methods The purpose of this scoping review is to identify, evaluate, and summarize published literature describing pharmacists’ attitudes toward naloxone and medications for OUD, i.e., methadone, buprenorphine, and naltrexone. All searches were performed on December 7, 2018, in 5 databases: Embase.com , PubMed.gov , Cumulative Index to Nursing and Allied Health Literature (CINAHL) via EBSCOhost, Cochrane Central Register of Controlled Trials via Wiley, and Clarivate Web of Science. Articles included original research conducted in the United States, described attitude-related language toward naloxone and medications for OUD, and pharmacists. Results A total of 1323 articles were retrieved, 7 were included. Five studies reported on pharmacists’ attitudes toward naloxone dispensing, 1 study reported on attitudes toward naloxone, buprenorphine, and buprenorphine/naloxone, and 1 reported on attitudes toward buprenorphine/naloxone. Respondents were diverse, including pharmacists from different practice specialties. Studies found that pharmacists agreed with a naloxone standing order, believed that naloxone should be dispensed to individuals at risk of an opioid overdose, and were supportive of dispensing buprenorphine. A minority of pharmacists expressed negative attitudes. Barriers cited to implementation included education and training, workflow, and management support. Conclusions Pharmacists were positive in their attitudes toward increased practice responsibilities for patients at risk of an opioid overdose or with an OUD. Pharmacists must receive education and training to be current in their understanding of OUD medications, and they must be supported in order to provide effective care to this patient population.
Implementing Group Visits for Opioid Use Disorder: A Case Series
Authors: Sokol Randi , Albanese Mark , Albanese Chiara , Coste Gerard , Grossman Ellie , Morrill Diana , Roll David , Sobieszczyk Amy , Schuman-Olivier Zev 
Published: August 2019

Background: Group-based models of Office-Based Opioid Treatment with buprenorphine-naloxone (B/N) are increasingly being implemented in clinical practice to increase access to care and provide additional therapeutic benefits. While previous studies reported these Group-Based Opioid Treatment (GBOT) models are feasible for providers and acceptable to patients, there has been no literature to help providers with the more practical aspects of how to create and maintain GBOT in different outpatient settings. Case series: We present 4 cases of GBOT implementation across a large academic health care system, highlighting various potential approaches for providers who seek to implement GBOT and demonstrate “success” based on feasibility and sustainability of these models. For each case, we describe the pros and cons and detail the personnel and resources involved, patient mix and group format, workflow logistics, monitoring and management, and sustainability components. Discussion: The implementation details illustrate that there is no one-size-fits-all approach, although feasibility is commonly supported by a team-based, patient-centered medical home. This approach includes the capacity for referral to higher levels of mental health and addiction support services and is bolstered by ongoing provider communication and shared resources across the health system. Future research identifying the core and malleable components to implementation, their evidence base, and how they might be influenced by site-specific resources, culture, and other contextual factors can help providers better understand how to implement a GBOT model in their unique clinical environment.
Families of magnetic semiconductors — an overview
Authors: Dietl Tomasz , Bonanni Alberta , Ohno Hideo 
Published: August 2019

Abstract
The interplay of magnetic and semiconducting properties has been in the focus for more than a half of the century. In this introductory article we briefly review the key properties and functionalities of various magnetic semiconductor families, including europium chalcogenides, chromium spinels, dilute magnetic semiconductors, dilute ferromagnetic semiconductors and insulators, mentioning also sources of non-uniformities in the magnetization distribution, accounting for an apparent high Curie temperature ferromagnetism in many systems. Our survey is carried out from today's perspective of ferromagnetic and antiferromagnetic spintronics as well as of the emerging fields of magnetic topological materials and atomically thin 2D layers.
Slow pyrolysis of fast growing wood Macaranga gigantea
Authors: Sinaga R J , Wijayanti A , Asih R D K , Subagyono RR D J N , Sanjaya A S 
Published: August 2019

Abstract
Slow pyrolysis of fast growing wood Macaranga gigantea has been studied. The product yields and chemical composition of products obtained from the experiments under different conditions (temperature, reaction time, sample mass) were described. In all cases, Macaranga gigantean gave total product yields, ranging from 45-65%. The increase in temperature and reaction time resulted in the increase in product yields. The organic phase of the pyrolysis products contained phenol and its derivatives, furans, benzene and its derivatives, eugenol and the isomers, methyl esters, aromatic ketones, poly-aromatic hydrocarbons, and carboxylic acids; these compounds were mainly derived from lignin, cellulose and hemicellulose.
Modifying humic acids on magnetite nanoparticles to sorption of p-chlorophenol
Authors: Koesnarpadi S , Santosa S J , Siswanta D , Rudiarso B 
Published: August 2019

Abstract
Modifying humic acids on magnetite nanoparticles (M/HA) to sorption of p-chlorophenol have been studied. The M/HA was synthesized by coprecipitation method in alkaline condition using ammonium hydroxide and humic acids (HA) was isolated from peat soil in Samarinda, East Kalimantan. Modification of M/HA was prepared using mass ratios of M and HA = 20:1, 20:2, 20:4, 20:6. The four adsorbents of M/HA were characterized by determination of pH point zero charge (pHPZC), magnetic properties by vibrating sample magnetometer and morphology were observed by scanning electron microscopy. The result showed that sorption of p-chlorophenol on four of M/HA materials was optimum at pH 3.0 and fitted well to pseudo second-order kinetic models and Langmuir isotherm. The adsorption capacity of M/HA between 0.27-0.57 mmol/g. Generally, the performance of four M/HA materials to sorption of p-chlorophenol was M/HA=20:6 > M/HA=20:4 > M/HA=20:2 > M/HA=20:1.
The effect of methanol extract of soybean (Glycine max L. Merr.) on rat testicular steroid hormones
Authors: Aryani R , Manurung H , Moeljopawiro S , Nugroho L H , Astuti P 
Published: August 2019

AbstractSoybeans contain phytoestrogens whose structure resembles estrogen in the body. Its function can be estrogen and antiestrogens, affecting the metabolism of sex steroid hormones. This study aims to determine the effect of soybean methanol extract on testosterone and estrogen levels in testicular rats. This study aims to determine the effect of soybean methanol extract on testosterone and estrogen levels in testicular rats. Twenty male Wistar rats were divided into 4 groups namely: control and treatment group were given soybean extract (250 mg/kg BW, 500 mg/kg BW) and genistein (0.3 mg/kg BW), respectively, for 52 days. The results of this research indicate that the effects of soybean methanol extract caused weight gain and decreased testicular weight. In addition, it showed that 500 mg/kg BW of soybean methanol extract reduced the level of testicular estrogen. It can be concluded that soybean methanol extract significantly reduced testicular estrogen levels for 52 days.
Characterization of lipase bacteria from water in Mahakam river port Samarinda
Authors: Astuti W , Hamdani F , Kartika R 
Published: August 2019

Abstract
Lipase is a hydrolase enzyme that is widely used in industry. The waters in Mahakam river port become a conducive place for the growth of bacteria that are able to hydrolyze lipids, so that bacteria are thought to be able to produce lipases. This research was conducted to screen bacteria that produced extracellular lipase and characterize the lipase. Screening of lipase-producing bacteria has been done with solid media containing Rodhamin B and the activity of lipase was conducted by titrimetricly. The characterization of isolated bacteria indicated that this bacteria belongs to Gram positive cocci shaped bacteria. Lipase-producing bacteria was successfully selected from the water taken in Mahakam river port Samarinda. The lipase was produced for 36 h. The optimum working conditions of lipase at 40°C and substrate concentration of 6%. Specific activity of bacterial lipase in Mahakam river water at Samarinda Port is 0.7212 U / mg.
In vivo wound healing activity of ethanolic extract of Terminalia catappa L. leaves in mice (Mus musculus)
Authors: Nugroho R A , Utami D , Aryani R , Nur F M , Sari Y P , Manurung H 
Published: August 2019

Abstract
The leaves of Indian almond (Terminalia catappa L.) is known as a folk medicine. However, the leaves has not been explored scientifically for its wound healing activity. Therefore, current research was designed to evaluate the wound healing activity of ethanolic extract of both green (GL) and brown (BL) Indian almond leaves in mice (Mus musculus). Incision wounds was inflicted on mice under chloroform anesthesia. Group C served as control without treatment, while group V treated with vaseline. Group Pi was positive control and treated with povidone iodine, group GL20, GL40, and GL 60 treated with simple ointment containing 20, 40 and 60% (w/w) ethanol extract of the GL, whereas group BL20, BL 40, and BL60 used BL with the same concentration. All the mouse were treated topically once a day. Wound healing potential was assessed with the percentage of the wound healing until day 16. The results found that, all groups of mice treated with ethanol extract of either GL or BL higher than 20% showed significantly wound healing activity compared to group of mice treated with simple ointment group, Pi, or control. The present study provides a scientific rationale for the use of the leaves extracts of T. catappa in the treatment of wound.
Application of organic acids in Clarias gariepinus Burchell, 1822 aquafeed: impacts on fish relative growth rate, condition factor and cannibalism ratio
Authors: Asriqah L , Nugroho R A , Aryani R 
Published: August 2019

Abstract
The present research was performed to determine the relative growth rate (RGR), condition factor (K) and cannibalism ratio (CR) of Catfish (Clarias gariepinus Burchell, 1822) fed different level and types of organic acid addition in the fish. Eighty fish were randomly assigned into five group triplicates, reared, and fed different type organic acid supplemented viz: control diet with no organic acid addition (B1); mixture of formic, acetic and propionic acid at level 0.05% (B2); mixture of formic, acetic and propionic acid at level 0.1% (B3); 0.05% butyric acid (B4); 0.1% butyric acid (B5), for 8 weeks. At the end of the 8th week, RGR, K, and CR were determined. Fish fed 0.1% mix of formic, acetic and propionic acid or 0.1% butyric acid in the diet had the significantly higher (p<0.05) RGR than control or other groups. Meanwhile, the K and CR of fish during the trial were not affected by any various and levels of the organic acid. In conclusion, the supplementation of 0.1% mix organic acid or 0.1% butyric acid in the diet of C. gariepinus for 8 weeks enhanced the RGR of the catfish but no effect on the condition factor and cannibalism ratio.
A method for calculating the sum of diagonal and anti diagonal of power matrices without explicitly calculating its matrices
Authors: Amir A K , Jeriko G , Jusmawati M 
Published: August 2019

Abstract
In fact, matrix power can be done simply by explicitly calculating it using the rule of matrix multiplication. However, matrix power is time consuming if it had high power, because the multiplication is done by many times. Fixing this, the function develops how to calculate the sum of diagonal and anti diagonal of power matrix without explicitly calculating the matrix. The result show that those can be calculated by using linear combination of determinant, sum of diagonal, and sum of anti diagonal of the initial matrix. Beside that, the functions are applied to certain block matrices.
Comparison analysis of Kanaan Sand, Loktunggul Sand, and Sambera Sand using the methods of XRD and XRF
Authors: Muliawan A , Jumardi R , Fernando R , Lutfi M 
Published: August 2019

Abstract
All this time, the utilization of sand of Kanaan, Loktunggul, and Sambera villages is only for building material. The abundant sand can be used as an advanced material if its metal and quartz contents are known. The analysis of metal and quartz contents on sand for the three villages has been conducted using the methods of x-ray diffraction (XRD) and x-ray fluorescence (XRF). The analysis with XRD method (X-Ray 0.15406 nm) revealed that the scatter angles at 2θ were 26.7470, 26.7360, and 26.7320 degrees with crystal widths of each sand are 1.2067 nm, 1.1876 nm, and 1.81085 nm. Meanwhile, the analysis with XRF method revealed that the concentrations of quartz were 95,5%, 96,6% and 79,1%. According to the analysis, the aluminium content was approximately 14.9 %, and it means that the purification process need to be conducted. The result revealed that the sand of Kanaan and Loktunggul villages was better than the sand of Sambera village regarding of its utilization as quartz material.
Interannual variability of sea surface height anomaly in the South China Sea
Authors: Radjawane I M , Karmel M E R , Prijatna K 
Published: August 2019

Abstract
Spatial variability of Sea Surface Height Anomaly (herein after SSHA) in the South China Sea was investigated through the response of sea surface to interannual phenomenon. In this research, satellite altimetry data were used which covered periods from 1992 to 2015. Signal analysis was performed to separate dominant spectrum for each stations. From the analysis, it is found that the dominant feature for South China Sea is high period signal i.e annual and decadal signals. This research will focus the analysis only on interannual variability response of SSHA. During northeast monsoon, SSHA in South China Sea region is increased due to the accumulation of water mass over southern basin. Highest increase of SSHA occurs during strong La Niña, while the highest decrease of SSHA takes place during El Niño. The distribution of change in SSHA varies with strong influence of latitude and longitude to the response of upper layer. During El Niño, increasing SSHA was detected in several locations; likewise, during La Niña the decrease was also found.
Astronomy laboratory for 13-to-15-year-old students
Authors: Sansone S , Marocchi D , Rinaudo M 
Published: August 2019

Abstract
In this work, we suggest the use of astronomical laboratory topics in didactic activities. We present two educational experiences, which we offered to last year students of the junior high school and first-year students of the technical-economic high school (ITES). Astronomy attracts the majority of students. Our idea is to use this interest as leverage to show how concepts and tools of Mathematics and Physics are essential; therefore the study of Mathematics and Physics topics becomes more explained and fascinating. For every laboratory activity, we explicate some of the Math, Physics and Astronomical concepts that can be strengthened. Every step was enriched by a brief theoretical presentation of some current research in the astronomical field, to increase the interest of students. We propose to use simple and cheap materials for all the laboratory experiences, and we suggest also using smart-phone applications as physical tools. We present three laboratory activities for the younger students and two laboratory activities for the older ones. For every topic we proposed a pre-test, to check out previous knowledge, and a post-test, to reflect if students have achieved the goals. We report the teacher’s opinion to draw some conclusions about the work done. In the end, we underline some problems and difficulties encountered.
Reducing the gender gap in spatial skills in high school physics
Authors: Collado R C 
Published: August 2019

Abstract
Science, Technology, Engineering and Mathematics (STEM) courses in college require intensive use of spatial skills. This research determines the correlation of the high school physics grades and the spatial skills of selected students from the Philippines. To measure the participants’ spatial skills, the Purdue Visualization of Rotations Test (PVRT) was utilized. Results show that these two variables have a moderate positive correlation. The data also reveal a significant difference in the PVRT scores between the male and female participants in this study. The gender gap in spatial skills was significantly removed after the females received an intervention in the form of a special program for improving spatial skills. This suggests the effectiveness of the special program, and the malleability of spatial skills even in adolescence. Recommendations for improving the spatial skills, as well as directions for future research are also discussed.