bluuebunny/crossref_metadata_2025 huggingface dataset:
Mechanisms of soil macrofauna community sustainability in temperate rice-growing systems
Authors: Korobushkin Daniil I. , Gongalsky Konstantin B. , Gorbunova Anastasia Yu. , Palatov Dmitry M. , Shekhovtsov Sergey V. , Tanasevitch Andrei V. , Volkova Julia S. , Chimidov Sanal N. , Dedova Elvira B. , Ladatko Valery A. , Sunitskaya Tatiana V. , John Katharina , Saifutdinov Ruslan A. , Zaitsev Andrey S.
Published: July 2019

Rice growing requires highly destructive and highly invasive field management negatively affecting soil biota and its functions. We aimed to compare taxonomic and functional trait compositions of soil macrofauna at different stages of rice cropping cycles in the three temperate rice-growing regions in Russia. Samples were collected in 2016 at four different biotopes in each region: flooded rice paddies; upland crops planted one year after flooded rice; rice paddy bunds; and relatively undisturbed seminatural control grasslands. Collected soil macrofauna were allocated to different traits according to their feeding preferences, vertical distribution, mobility and flood tolerance. The lowest macrofaunal abundance across all regions was observed in rice paddies. Cultivation of upland crops after paddy flooding consistently decreased the abundance of resident macrofauna, but not that of mobile soil macrofauna. In the upland crops, the abundance of belowground and mobile belowground macrofauna was significantly higher than that in control grasslands. The abundance of aboveground phytophages was significantly lower in the upland crops than in control sites. Flood-associated taxa showed low colonization ability after the paddies were drained. In contrast, representatives of other traits recorded in flooded fields increased their abundance at the next stage of crop rotation, demonstrating high resilience within an entire rice-growing system, including bunds. This finding indicates a high potential of seminatural grasslands and especially bunds as sources of rapid restoration of soil macrofauna functional diversity in rice-growing agroecosystems, thus maintaining the sustainability of soil food webs in the rice paddies.
Immediate effects of smoking on optic nerve and macular perfusion measured by optical coherence tomography angiography
Authors: Ciesielski Maksym , Rakowicz Piotr , Stopa Marcin
Published: July 2019

The aim of this study was the assessment of the relationship between cigarette smoking and optic nerve and macular vessel density measured by optical coherence tomography angiography. We examined 30 eyes from 30 healthy habitual smokers. The examination was performed using a high-speed and high-resolution spectral-domain optical coherence tomography RTVue XR Avanti with AngioVue (Optovue, Fremont, CA, USA) with a split-spectrum amplitude-decorrelation angiography algorithm. Blood pressure, heart rate, vascular density in the area of the optic nerve head (4.5*4.5 mm) and vascular density with the foveal avascular zone in the central macula (3.0*3.0 mm) were measured and analyzed before, immediately after and 30 minutes after cigarette smoking. Quantitative measurements were carried out by AngioAnalytics Phase 7 software. Immediately after smoking both heart rate and blood pressure increased significantly (p < 0.001) compared to values before smoking and then significantly decreased after 30 minutes comparing to values obtained right after smoking (p < 0.001). The mean area of the foveal avascular zone, parafoveal vessel density, and peripapillary vessel density did not change significantly. Our results show no immediate influence of smoking on vessel density parameters measured by specific OCTA machine in healthy habitual smokers.
An intronic variant in the GCKR gene is associated with multiple lipids
Authors: Fernandes Silva Lilian , Vangipurapu Jagadish , Kuulasmaa Teemu , Laakso Markku
Published: July 2019

Previous studies have shown that an intronic variant rs780094 of the GCKR gene (glucokinase regulatory protein) is significantly associated with several metabolites, but the associations of this genetic variant with different lipids is largely unknown. Therefore, we applied metabolomics approach to measure metabolites in a large Finnish population sample (METSIM study) to investigate their associations with rs780094 of GCKR. We measured metabolites by mass spectrometry from 5,181 participants. P < 5.8 × 10−5 was considered as statistically significant given 857 metabolites included in statistical analyses. We found novel negative associations of the T allele of GCKR rs780094 with serine and threonine, and positive associations with two metabolites of tryptophan, indolelactate and N-acetyltryptophan. Additionally, we found novel significant positive associations of this genetic variant with 12 glycerolipids and 19 glycerophospholipids. Significant negative associations were found for three glycerophospholipids (all plasmalogen-cholines), and two sphingolipids. Significant novel associations were also found with gamma-glutamylthreonine, taurocholenate sulfate, and retinol. Our study adds new information about the pleiotropy of the GCKR gene, and shows the associations of the T allele of GCKR rs780094 with lipids.
Acute and chronic hypoxia differentially predispose lungs for metastases
Authors: Reiterer Moritz , Colaço Renato , Emrouznejad Pardis , Jensen Anders , Rundqvist Helene , Johnson Randall S. , Branco Cristina
Published: July 2019

Oscillations in oxygen levels affect malignant cell growth, survival, and metastasis, but also somatic cell behaviour. In this work, we studied the effect of the differential expression of the two primary hypoxia inducible transcription factor isoforms, HIF-1α and HIF-2α, and pulmonary hypoxia to investigate how the hypoxia response of the vascular endothelium remodels the lung pre-metastatic niche. Molecular responses to acute versus chronic tissue hypoxia have been proposed to involve dynamic HIF stabilization, but the downstream consequences and the extent to which differential lengths of exposure to hypoxia can affect HIF-isoform activation and secondary organ pre-disposition for metastasis is unknown. We used primary pulmonary endothelial cells and mouse models with pulmonary endothelium-specific deletion of HIF-1α or HIF-2α, to characterise their roles in vascular integrity, inflammation and metastatic take after acute and chronic hypoxia. We found that acute hypoxic response results in increased lung metastatic tumours, caused by HIF-1α-dependent endothelial cell death and increased microvascular permeability, in turn facilitating extravasation. This is potentiated by the recruitment and retention of specific myeloid cells that further support a pro-metastatic environment. We also found that chronic hypoxia delays tumour growth to levels similar to those seen in normoxia, and in a HIF-2α-specific fashion, correlating with increased endothelial cell viability and vascular integrity. Deletion of endothelial HIF-2α rendered the lung environment more vulnerable to tumour cell seeding and growth. These results demonstrate that the nature of the hypoxic challenge strongly influences the nature of the endothelial cell response, and affects critical parameters of the pulmonary microenvironment, significantly impacting metastatic burden. Additionally, this work establishes endothelial cells as important players in lung remodelling and metastatic progression.
Mass spectrometric investigation of amorphous Ga-Sb-Se thin films
Authors: Mawale Ravi , Halenkovič Tomáš , Bouška Marek , Gutwirth Jan , Nazabal Virginie , Bora Pankaj Lochan , Pečinka Lukáš , Prokeš Lubomír , Havel Josef , Němec Petr
Published: July 2019

Amorphous chalcogenide thin films are widely studied due to their enhanced properties and extensive applications. Here, we have studied amorphous Ga-Sb-Se chalcogenide thin films prepared by magnetron co-sputtering, via laser ablation quadrupole ion trap time-of-flight mass spectrometry. Furthermore, the stoichiometry of the generated clusters was determined which gives information about individual species present in the plasma plume originating from the interaction of amorphous chalcogenides with high energy laser pulses. Seven different compositions of thin films (Ga content 7.6–31.7 at. %, Sb content 5.2–31.2 at. %, Se content 61.2–63.3 at. %) were studied and in each case about ~50 different clusters were identified in positive and ~20–30 clusters in negative ion mode. Assuming that polymers can influence the laser desorption (laser ablation) process, we have used parafilm as a material to reduce the destruction of the amorphous network structure and/or promote the laser ablation synthesis of heavier species from those of lower mass. In this case, many new and higher mass clusters were identified. The maximum number of (40) new clusters was detected for the Ga-Sb-Se thin film containing the highest amount of antimony (31.2 at. %). This approach opens new possibilities for laser desorption ionization/laser ablation study of other materials. Finally, for selected binary and ternary clusters, their structure was calculated by using density functional theory optimization procedure.
Verification of serum albumin elevating effect of cell-free and concentrated ascites reinfusion therapy for ascites patients: a retrospective controlled cohort study
Authors: Yamada Yosuke , Inui Keita , Hara Yuuta , Fuji Kazuaki , Sonoda Kosuke , Hashimoto Koji , Kamijo Yuji
Published: July 2019

Cell-free and concentrated ascites reinfusion therapy (CART) is frequently used to treat refractory ascites in Japan. However, its efficacy remains unclear. This controlled cohort study verified the serum albumin elevating effect of CART by comparisons with simple paracentesis. Ascites patients receiving CART (N = 88) or paracentesis (N = 108) at our hospital were assessed for the primary outcome of change in serum albumin level within 3 days before and after treatment. A significantly larger volume of ascites was drained in the CART group. The change in serum albumin level was +0.08 ± 0.25 g/dL in the CART group and −0.10 ± 0.30 g/dL in the paracentesis group (P < 0.001). The CART – paracentesis difference was +0.26 g/dL (95%CI +0.18 to +0.33, P < 0.001) after adjusting for potential confounders by multivariate analysis. The adjusted difference increased with drainage volume. In the CART group, serum total protein, dietary intake, and urine volume were significantly increased, while hemoglobin and body weight was significantly decreased, versus paracentesis. More frequent adverse events, particularly fever, were recorded for CART, although the period until re-drainage was significantly longer. This study is the first demonstrating that CART can significantly increase serum albumin level as compared with simple paracentesis. CART represents a useful strategy to manage patients requiring ascites drainage.
Ultrahigh-resolution spectrometer based on 19 integrated gratings
Authors: Jiang An-Qing , Zang Kai-Yan , Tu Hua-Tian , Chen Jian-Ke , Lu Wei-Jie , Yoshie Osamu , Wang Xiao-Ping , Xiang Xiao-Dong , Lee Young-Pak , Chen Bing , Zheng Yu-Xiang , Wang Song-You , Zhao Hai-Bin , Yang Yue-Mei , Chen Liang-Yao
Published: July 2019

Optical spectrometers play a key role in acquiring rich photonic information in both scientific research and a wide variety of applications. In this work, we present a new spectrometer with an ultrahigh resolution of better than 0.012 nm/pixel in the 170–600 nm spectral region using a grating-integrated module that consists of 19 subgratings without any moving parts. By using two-dimensional (2D) backsideilluminated complementary metal-oxide-semiconductor (BSI-CMOS) array detector technology with 2048 × 2048 pixels, a high data acquisition speed of approximately 25 spectra per second is achieved. The physical photon-sensing size of the detector along the one-dimensional wavelength direction is enhanced by a factor of 19 to approximately 428 mm, or 38912 pixels, to satisfy the requirement of seamless connection between two neighboring subspectral regions without any missing wavelengths throughout the entire spectral region. As tested with a mercury lamp, the system has advanced performance capabilities characterized by the highest k parameter reported to date, being approximately 3.58 × 104, where k = (working wavelength region)/(pixel resolution). Data calibration and analysis as well as a method of reducing background noise more efficiently are also discussed. The results presented in this work will stimulate further research on precision spectrometers based on advanced BSI-CMOS array detectors in the future.
Use of chlorine dioxide to sterilize medium for tissue culture of potato
Authors: Duan Yongbo , Zhang Han , Sun Mengchu , Zhao Fenglan , Xue Tao , Xue Jianping
Published: July 2019

In vitro cultured seedlings or microtubers are the major starting materials for the production of potato. Currently, seedlings are cultured in media sterilized by autoclaving, which, however, consumes more electricity and takes longer for sterilization, and also requires high temperature-tolerant vessel materials. In order to identify alternative methods of sterilizing culture conditions, the disinfection effects of chlorine dioxide (CD) at 88.0, 29.3, 17.6, 12.6 and 8.8 μM were evaluated in potato medium and vessels. The ≥12.6 μM gaseous CD effectively disinfected vessel through a 30-min fumigation process, and its aqueous solution disinfected potato medium efficiently as well. In presence of 12.6 μM CD in the medium, the potato seedlings had similar morphological features as those grown on autoclaved medium, with some exceptions. The use of 12.6–29.3 μM aqueous CD to sterilize the medium increased antioxidant enzyme activities in potato seedlings, while the use of higher concentration decreased antioxidant enzyme activity levels. SSR analysis did not reveal significant molecular differences in potato seedlings cultured between autoclaved and CD-sterilized medium. In addition to this, CD-sterilized medium induced potato microtuber formation at a similar rate as autoclaved medium. In summary, using CD to sterilize potato medium and vessels did not compromise the growth of seedlings and microtuber induction. This study provides an economical and simplified sterilization method for media used to culture potato plantlets, and this can improve energy use of the large-scale tissue culture industry.
A cationic tetrahedral Zn(ii) cluster based on a new salicylamide imine multidentate ligand: synthesis, structure and fluorescence sensing study
Authors: Meng Huan-Huan , Wang Cai-Yun , Xi Wei , Song Xue-Qin , Wang Li
Published: July 2019

We present here a monocationic ZnII tetrahedral cluster which is extremely stable and exhibits highly sensitive and selective recognition of phosphates against other common anions in water containing media.
Searching for stability at lower dimensions: current trends and future prospects of layered perovskite solar cells
Authors: Thrithamarassery Gangadharan Deepak , Ma Dongling
Published: July 2019

Two-dimensional perovskites are an attractive alternative to 3D perovskites for solar cell application as they directly address a critical issue of stability of 3D perovskite solar cells, while achieving similarly high power conversion efficiencies.
Pectin-rich extracts from olives inhibit proliferation of Caco-2 and THP-1 cells
Authors: Bermúdez-Oria Alejandra , Rodríguez-Gutiérrez Guillermo , Alaiz Manuel , Vioque Javier , Girón-Calle Julio , Fernández-Bolaños Juan
Published: July 2019

Pectin-rich olive extracts from a by-product of olive oil production inhibits proliferation of Caco-2 and THP-1 cells, and hemagglutination by galectin-3. Activation of caspase-3 indicates induction of apoptosis.
Cordyceps militaris polysaccharides exerted protective effects on diabetic nephropathy in mice via regulation of autophagy
Authors: Chen Dan-Dan , Xu Rui , Zhou Jiu-Yao , Chen Jun-Qi , Wang Lin , Liu Xu-Sheng , Liang Chun-ling , Liu Bi-Hao , Lu Rui-Rui , Wu Jun-Biao , Lin Hua
Published: July 2019

The present study is designed to investigate the protective effects of Cordyceps militaris polysaccharides (CMP) on STZ-treated DN mice.
Stereoselective construction of deoxy-cruciferane alkaloids by NHC-catalyzed intramolecular annulation of homoenolate with quinazolinone
Authors: Ahire Milind M. , Pol Mahesh D. , Kavale Dattatry S. , Gonnade Rajesh G. , Mhaske Santosh B.
Published: July 2019

Novel NHC-catalyzed intramolecular stereoselective [3 + 2] cycloaddition of enal with quinazolinone is developed to construct a pyrroloindoloquinazolinone scaffold of deoxy-cruciferane alkaloids.
Current progress of metallic and carbon-based nanostructure catalysts towards the electrochemical reduction of CO2
Authors: Hou Liang , Yan Jingze , Takele Leta , Wang Yuanbin , Yan Xiaoqin , Gao Yan
Published: July 2019

The current design and development of inorganic nanostructured electrocatalysts for carbon dioxide reduction are highlighted in this review.
Intrinsic zero thermal expansion in cube cyanurate K6Cd3(C3N3O3)4
Authors: Xia Mingjun , Liang Fei , Meng Xianghe , Wang Yonggang , Lin Zheshuai
Published: July 2019

The novel cubic cyanurate K6Cd3(C3N3O3)4 exhibits zero thermal expansion behavior with a very low thermal expansion coefficient of 0.06 MK−1 in a broad temperature range from 10 to 130 K.
A theoretical study of the ESIPT mechanism of 3-hydroxyflavone derivatives: solvation effect and the importance of TICT for its dual fluorescence properties
Authors: Qi Yutai , Lu Meiheng , Wang Yi , Tang Zhe , Gao Ziqing , Tian Jing , Fei Xu , Li Yao , Liu Jianyong
Published: July 2019

As the dielectric constant decreases, the ESIPT reaction occurs more easily and TICT is good at emitting double fluorescence.
Effect of silane functionalized graphene prepared by a supercritical carbon dioxide process on the barrier properties of polyethylene terephthalate composite films
Authors: Wei Jiajia , Peng Shigui , Xue Bin , Yang Zhao , Qin Shuhao , Yu Jie , Xu Guomin
Published: July 2019

Adding silane modified GNs prepared by a Sc-CO2process into a PET matrix could greatly enhance the barrier properties of the GNs/PET composites.The barrier performance of GNs/PET composites was greatly enhanced by modifying GNs with silane coupling agents via Sc-CO2process.
Porous 3D flower-like CoAl-LDH nanocomposite with excellent performance for NO2 detection at room temperature
Authors: Liu Zhi , Teng Lei , Ma Laifeng , Liu Yang , Zhang Xueying , Xue Jialing , Ikram Muhammad , Ullah Mohib , Li Li , Shi Keying
Published: July 2019

We have synthesized 3D flower-like CoAl-LDHs consisting of ultrathin nanosheets for excellent performance for NO2 detection at room temperature.
Deep oxidative desulfurization of model fuels catalysed by immobilized ionic liquid on MIL-100(Fe)
Authors: Yang WanXin , Guo Guoqing , Mei Zhihong , Yu Yinghao
Published: July 2019

ILs@MIL-100 composites were synthesized via the wet impregnation method and applied in deep oxidative desulfurization of gasoline with high efficiency.
Effect of morphological change of copper-oxide fillers on the performance of solid polymer electrolytes for lithium-metal polymer batteries
Authors: Choi Bit Na , Yang Jin Hoon , Kim Yong Seok , Chung Chan-Hwa
Published: July 2019

Solid polymer electrolytes (SPEs) for Li-metal polymer batteries are prepared, in which poly(ethylene oxide) (PEO), lithium bis(trifluoromethylsulfonyl)imide (LiTFSI), and copper-oxide fillers are formulated.
Surface protolytic property characterization of hydroxyapatite and titanium dioxide nanoparticles
Authors: Kukleva Ekaterina , Suchánková Petra , Štamberg Karel , Vlk Martin , Šlouf Miroslav , Kozempel Ján
Published: July 2019

We provide characterization data of hydroxyapatite (nHAp) and titanium dioxide (nTiO2) nanoparticles as potential materials for ion sorption,e.g.in targeted therapy, barrier materials for waste repositories or photovoltaics.
Development of core–sheath structured smart nanofibers by coaxial electrospinning for thermo-regulated textiles
Authors: Yi Liqiang , Wang Yan , Fang Yini , Zhang Ming , Yao Juming , Wang Lina , Marek Jaromir
Published: July 2019

Fabrication of core–sheath structured smart nanofibers loaded with CsxWO3 by coaxial electrospinning which demonstrate high heat capacity and NIR absorbance.
Nitric oxide-releasing emulsion with hyaluronic acid and vitamin E
Authors: Yapor Janet P. , Gordon Jenna L. , Henderson Christina N. , Reynolds Melissa M.
Published: July 2019

S-Nitrosoglutathione (GSNO) is a naturally available S-nitrosothiol that can be incorporated into non-toxic formulations intended for topical use.
Correction: Handling and managing bleeding wounds using tissue adhesive hydrogel: a comparative assessment on two different hydrogels
Authors: T Thiruselvi , Raja S Thirupathi Kumara , R Aravindhan , K Shanuja S. , A Gnanamani
Published: July 2019

Correction for ‘Handling and managing bleeding wounds using tissue adhesive hydrogel: a comparative assessment on two different hydrogels’ by Thiruselvi T et al., RSC Adv., 2016, 6, 19973–19981.
A non-intrusive evaluation method for tumor-targeting characteristics of nanomedicines based onin vivonear-infrared fluorescence imaging
Authors: Liu Hao , Marquez Rebecca T. , Wu Xiaoqing , Li Ke , Vadlamani Shweta , Li Song , Wang Ya , Xu Liang , Wu Daocheng
Published: July 2019

A novel NIR fluorescence imaging-based method for non-intrusive evaluation of tumor targeting of nanomedicines was established. The average tumor-targeting index (TTI) and area under TTI-time curve (AUTC) were established as thein vivoindicators.
Highly-efficient solution-processed green phosphorescent organic light-emitting diodes with reduced efficiency roll-off using ternary blend hosts
Authors: Zhang Jianhua , Guan Yuxin , Yang Jiali , Hua Wenqiang , Wang Shuanglong , Ling Zhitian , Lian Hong , Liao Yingjie , Lan Weixia , Wei Bin , Wong Wai-Yeung
Published: July 2019

We have investigated the effect of various materials mCP DpAn-5BzAc poly(9-vinylcarbazole) and TCTA as the hosts on the performance of solution-processed green phosphorescent organic light-emitting diodes (PhOLEDs).
All-polymer photodetectors with photomultiplication
Authors: Yang Kaixuan , Wang Jian , Miao Jianli , Zhang Jian , Zhang Fujun
Published: July 2019

Photomultiplication type all-polymer photodetectors were fabricated with P3HT : PZ1 (100 : 4, wt/wt) as active layers. The EQE values are 46 700% and 31 700% at 375 nm and 615 nm under a −20 V bias, respectively.
Highly efficient deep-red organic light-emitting diodes using exciplex-forming co-hosts and thermally activated delayed fluorescence sensitizers with extended lifetime
Authors: Li Dan , Liao Liang-Sheng
Published: July 2019

High-efficiency deep-red phosphorescent OLEDs with a narrow FWHM based on exciplex-forming co-hosts and TADF sensitizers realized an EQE of 21.5%.
Relationship Between F2 Slope and Intelligibility in Parkinson's Disease: Lexical Effects and Listening Environment
Authors: Chiu Yi-Fang , Forrest Karen , Loux Travis
Published: July 2019

Purpose

There is a complex relationship between speech production and intelligibility of speech. The current study sought to evaluate the interaction of the factors of lexical characteristics, listening environment, and the 2nd formant transition (F2 slope) on intelligibility of speakers with Parkinson's disease (PD).

Method

Twelve speakers with PD and 12 healthy controls read sentences that included words with the diphthongs /aɪ/, /ɔɪ/, and /aʊ/. The F2 slope of the diphthong transition was measured and averaged across the 3 diphthongs for each speaker. Young adult listeners transcribed the sentences to assess intelligibility of words with high and low word frequency and high and low neighborhood density in quiet and noisy listening conditions. The average F2 slope and intelligibility scores were entered into regression models to examine their relationship.

Results

F2 slope was positively related to intelligibility in speakers with PD in both listening conditions with a stronger relationship in noise than in quiet. There was no significant relationship between F2 slope and intelligibility of healthy speakers. In the quiet condition, F2 slope was only correlated with intelligibility in less-frequent words produced by the PD group. In the noise condition, F2 slope was related to intelligibility in high- and low-frequency words and high-density words in PD.

Conclusions

The relationship between F2 slope and intelligibility in PD was affected by lexical factors and listening conditions. F2 slope was more strongly related to intelligibility in noise than in quiet for speakers with PD. This relationship was absent in highly frequent words presented in quiet and those with fewer lexical neighbors.
Mineral oil moisture measurement with the use of impedance spectroscopy
Authors: Macioszek Łukasz , Włodarczak Sylwia , Rybski Ryszard
Published: July 2019

In this study, an attempt was made to evaluate very small water content (below 0.05% in volume) in the ‘20–30’ mineral oil using both electrochemical impedance spectroscopy (EIS) and dielectric constant calculation based on the measured impedance values. Measurements were performed with the use of laboratory EIS system and were designed to verify experimentally that it is possible to develop an IS‐based measuring system that would be able to work in situ, be relatively cheap and fast alternative compared with systems widely used nowadays. Known amounts of water were added to the oil samples, which were not treated by any other factors, e.g. solvents, contrary to other researchers’ findings. Impedance of the samples was measured in the frequency range of 0.01–100 Hz. Equivalent circuit was proposed and used to reveal how electric properties of the oil change due to water addition. Both calibration curves based on the value of an equivalent circuit element and dielectric constant showed linear correlation of their values with the water amount. Thus, experimental results confirm that with some discussed limitations, EIS and dielectric constant calculation can be used to estimate even such small quantities of water in mineral oil.
Unbalanced multi‐phase distribution grid topology estimation and bus phase identification
Authors: Liao Yizheng , Weng Yang , Liu Guangyi , Zhao Zhongyang , Tan Chin‐Woo , Rajagopal Ram
Published: July 2019

There is an increasing need for monitoring and controlling uncertainties brought by distributed energy resources in distribution grids. For such goal, accurate multi‐phase topology is the basis for correlating measurements in unbalanced distribution networks. Unfortunately, such topology knowledge is often unavailable due to limited investment. Also, the bus phase labeling information is inaccurate due to human errors or outdated records. For this challenge, this paper utilizes smart meter data for an information‐theoretic approach to learn the topology of distribution grids. Specifically, multi‐phase unbalanced systems are converted into symmetrical components, namely positive, negative, and zero sequences. Then, this paper proves that the Chow‐Liu algorithm finds the topology by utilizing power flow equations and the conditional independence relationships implied by the radial multi‐phase structure of distribution grids with the presence of incorrect bus phase labels. At last, by utilizing Carson's equation, this paper proves that the bus phase connection can be correctly identified using voltage measurements. For validation, IEEE systems are simulated using three real data sets. The simulation results demonstrate that the algorithm is highly accurate for finding multi‐phase topology even with strong load unbalancing condition and DERs. This ensures close monitoring and controlling DERs in distribution grids.
Mapping the stellar age of the Milky Way bulge with the VVV
Authors: Surot F. , Valenti E. , Hidalgo S. L. , Zoccali M. , Gonzalez O. A. , Sökmen E. , Minniti D. , Rejkuba M. , Lucas P. W.
Published: July 2019

Context. The bulge represents the best compromise between old and massive Galactic components, and as such its study is a valuable opportunity to understand how the bulk of the Milky Way formed and evolved. In addition, being the only bulge in which we can individually resolve stars in all evolutionary sequences, the properties of its stellar content provide crucial insights into the formation of bulges.

Aims. We are providing a detailed and comprehensive census of the Milky Way bulge stellar populations by producing deep and accurate photometric catalogs of the inner ∼300 deg2of the Galaxy.

Methods. We performed DAOPHOT/ALLFRAME point spread function (PSF) fitting photometry of multi-epochsJandKsimages provided by the VISTA Variables in the Vía Láctea (VVV) survey to obtain deep photometric catalogs. Artificial star experiments have been conducted on all images to properly assess the completeness and the accuracy of the photometric measurements.

Results. We present a photometric database containing nearly 600 million stars across the bulge area surveyed by the VVV. Through the comparison of derived color-magnitude diagrams of selected fields representative of different levels of extinction and crowding, we show the quality, completeness and depth of the new catalogs. With the exception of the fields located along the plane, this new photometry samples stars down to ∼1–2 mag below the old main sequence turnoff with unprecedented accuracy. To demonstrate the tremendous potential inherent to this new dataset, we give a few examples of possible applications, including (i) star count studies through the dataset completeness map; (ii) surface brightness map; and (iii) cross-correlation withGaiaDR2.

Conclusions. The database presented here represents an invaluable collection for the whole community, and we encourage its exploitation. The photometric catalogs including completeness information are publicly available through the ESO Science Archive as part of the MW-BULGE-PSPHOT release.
The flux compression generator load parameters selection
Authors: Wołoszyn Mirosław , Kowalak Daniel , Jakubiuk Kazimierz , Nowak Mikołaj
Published: July 2019

Computer simulation results of the flux compression generator (FCG) loaded with an inductor has been presented in this paper. Simulation research has been performed in order to select the parameters of FCG load coil properly. The influence of the load inductance and resistance on the current gain factor and the magnetic field energy accumulated in a load coil has been investigated.
Research and analysis of selected LED lamps with E27 base in the field of harmonic distortion
Authors: Putz Łukasz , Nawrowski Ryszard
Published: July 2019

The article presents the results of testing of three compact LED lamps with the E27 base. Power quality parameters were subject to the testing in the circuit which powered the LED light sources. Particular attention was paid to higher harmonics of current and the total harmonic distortion. Risks which could follow from the application of the great number of electroluminescent light sources were discussed. The research have been conducted. Then, the obtained testing results for the respective LED lamps were analyzed in comparison with the requirements of the IEC 61000-3-2:2014-10 Standard [1].
3D thermal field modelling in electromagnetic gripping system
Authors: Barański Mariusz , Glapa Krystian
Published: July 2019

In this paper, 3D steady-state thermal field modeling in electromagnetic gripping system using Comsol Multiphisics was presented. The electromagnetic gripping system, which is a component of the mechanical leg of a walking robot was designed by the authors. An algorithm to design of the electromagnetic gripping was developed. During calculations, the influence of the value of the current on the thermal field distribution in steady-state was carried out. Selected results of simulations as well as the analysis of these results were presented.
Smart air purifier suitable for small public spaces
Authors: Idziak Pawel , Gojtowski Michal
Published: July 2019

The article presents the concept and implemented, functional physical model of a mobile air purifier for small public spaces or apartments. The purifier is a compact, controlled by microcontroller of the Arduino UNO series. The model is equipped with a set of sensors allowing to determine the content of PM 2.5 contaminants. After exceeding the adopted threshold in the software, the system automatically starts the process of air filtering. The following factors are measured: solid contamination content, humidity and air temperature as well as pressure drop on built-in filters. The purifier absorbs solid pollutants and reduces VOC pollutants. The system has been equipped with a screen informing the user about air parameters and the state of the filter contamination.
Evaluation of hybrid EMI filters to reduce the high level of conducted noise generated by the frequency inverter
Authors: Pasko Marian , Szymczak Marek
Published: July 2019

This article presents an analysis of the applicability of hybrid EMI filters to reduce common mode noise. The effectiveness of filters was tested when attenuating the high level of EMI noise generated by the frequency inverter. The influence of the use of various magnetic cores in the hybrid EMI filter construction was investigated and the obtained insertion losses with passive filters were compared. The article concludes with the summary of both filtration techniques.
A dedicated battery for an electric bike
Authors: Jajczyk Jarosław , Słomczyński Kamil
Published: July 2019

The project presents a dedicated battery for an electric bicycle. Information on the structure of the vehicle and the principles of operation were given. An electric drive consisting of a brushless motor was characterized. The process of designing and making the battery is presented. The battery has been developed in a universal way, allowing installation in other constructions. The test results of the developed battery have been presented.
Analysis of the influence of phase supply angular range on the parameters of a switched reluctance motor
Authors: Adamski Bartłomiej , Wrobel Krzysztof
Published: July 2019

The paper presents the results of studies on the impact of the angular range of phase supply on the parameters of a drive based on a switched reluctance motor. The studies were carried out for a drive with a three-phase motor supplied from a modified power supply system, enabling changes in the phase winding configuration. The paper presents the results obtained on the basis of calculations in a simulation model of the drive in the Matlab/Simulink environment for serial and parallel winding configurations.
Distributed control system DCS using a PLC controller
Authors: Hulewicz Arkadiusz , Krawiecki Zbigniew , Dziarski Krzysztof
Published: July 2019

The article presents The unconventional use of PLC controllers in a distributed control system DCS were presented in this article. The functionality, requirements and the costs of installation and operation of commercial DCS systems and those built on the basis of PLC logic controllers were analyzed. The features, the architecture and the structure of DCS systems based on PLC controllers have been described in details. The particular attention was paid to the allocation of the individual system components to the appropriate layers contained in their structure.
Electric lighting modelling in historical areas of small towns in agglomeration area
Authors: Graczyk Rafał , Nawrowski Artur , Nawrowski Ryszard
Published: July 2019

In the paper authors present the results of research and analysis of the strategy of modelling electric lighting systems in the historical urban space of small towns. The research was performed in Kórnik − a representative, selected example of a small town of Greater Poland. Spatial structure in correlation to electric lighting and its parameters was investigated. The work was summarized with conclusions in the field of modelling the lighting strategies of the historical space of small towns in the agglomeration area.
Energy and exergy comparison of three similar combined power cycles
Authors: Golneshan A.A. , Nemati H.
Published: July 2019

Three similar combined power cycles were compared from energy and exergy aspect during one day. Enormous different data were collected every five minutes. In common exergy analysis, it is only possible to determine main sources of exergy destructions. These sources are mainly equipment in which severe irreversible process, i.e. combustion is going on. However, it is clear that nothing can be done to reduce these kinds of irreversibilities in an operating cycle. Here, it has been shown that in contrast to usual researches, the energy and exergy comparison of different power cycles lead to useful improvements in their performance. Moreover, since the ambient temperature was changed more than 10 °C, ambient temperature impacts on equipment were studied based on those collected data. The effect of evaporative coolers is the other objective, which was proceeded to. Since coolers only come into the service in the afternoon, those collected data were a valuable source to study the effect of adding moisture. Due to air high moisture content, it was not possible to use dry air assumption and more complicated equations were needed to simulate combustion process. Results show which equipment needs more attention during maintains which is useful in similar plants.
Influence of coal blending structure on pushing current of coke oven
Authors: Sun Minmin , Zhang Jianliang , Li Kejiang , Hu Chunhui
Published: July 2019

The difficulty of pushing coke directly affects the quality and output of coke, which disturbs the normal production, causes damage, and shortens the service life of coke oven and other ancillary equipment. The relationship between coal blending structure and pushing current is studied through industrial test in this paper, including the influence of coal moisture, caking, volatile matter content and fineness. The results indicate that the pushing current has a complex relationship with coal blending structure. The increase of moisture increases the average pushing current Iav, and the dry and wet coal blending technology can reduce the times N of large pushing current without changing the Iav. Iav and N first decrease and then increase with the increase of caking index. A small increase of volatiles plays an important role in reducing Iav and N. While the effect of blending coal fineness on the pushing current shows an opposite trend. Therefore, appropriate coal structure parameters are very important for economical and efficient coking.
Mold taper optimization for continuous casting of H-beam blanks
Authors: Chen Wei , Yang Gaiyan , Zhu Liguang , Guo Gaoxiang , Wang Jiaqi , Wang Bo
Published: July 2019

The objective of this study is to optimize the mold taper for continuous casting of H-beam blanks. A thermo-mechanical coupled mathematical model was established to analyze the heat transfer, solidification, and shrinkage of the strand in the mold based on the multiple load step method. Based on the simulation results of the air gap distribution in the mold, the mold taper was optimized at selected points on the surface of H-beam blank mold by minimizing the air gap thickness and the best taper scheme was proposed. The results show that the original mold tapers are relatively larger and the optimum mold tapers are as follows: (1) taper at the flange surface: 0.81%/m; (2) taper at the narrow face: 0.68%/m; (3) taper at the fillet: −1.44%/m. The optimum mold size obtained from taper optimization was used in the actual continuous casting process and based on the results, it can be concluded that the optimum mold taper scheme proposed in this study reduced the formation of surface cracks in H-beam blanks.
Das Metabolische Syndrom: Ein gefährliches Quartett
Authors: Schmid HP Eva C.
Published: July 2019

Beim Metabolischen Syndrom handelt es sich nicht um eine eigenständige Erkrankung, sondern um einen Symptomenkomplex. Er ist heutzutage als größter Risikofaktor für die Entwicklung von Arteriosklerose und damit assoziierten kardiovaskulären Folgen wie Herzinfarkt oder Schlaganfall anzusehen.
Verborgener Hunger
Authors: Flory Sandra
Published: July 2019

Auf die Bioverfügbarkeit von Mikronährstoffen wirken sich sowohl unbeeinflussbare als auch beeinflusse Faktoren aus. Zu Zweiteren gehören lebensmittel-und ernährungsbedingte Einflüsse. Der Beitrag veranschaulicht am Beispiel von Eisen, Kalzium, Magnesium sowie Vitamin A und β-Carotin, wie sich die Bioverfügbarkeit über die Zusammenstellung und Zubereitung von Lebensmitteln verbessern lässt. Das beste Mittel gegen Mikronährstoffmangel und verborgenen Hunger ist eine ausgewogene Mischkost, die verschiedene Zubereitungsarten wie Kochen und Rohkost kombiniert.
Antreiber mit Bodenhaftung
Authors: März Henrike
Published: July 2019

Löwenzahn (Taraxacum officinale) kann einerseits therapeutisch eingesetzt werden, zum Beispiel als Tee für Leber und Darm, oder aber Teil des Speiseplans sein, beispielsweise in einem Salat.
Unruhe statt Entspannung
Authors: März Henrike
Published: July 2019

Das Restless-Legs-Syndrom (RLS) ist geprägt durch Missempfindungen vor allem in den Beinen, die von innerer Unruhe und Bewegungsdrang begleitet werden. Für das RLS können unter anderem Nährstoffmängel, negative Ernährungsfaktoren und gestörte Neurotransmitterstoffwechsel verantwortlich sein. Eine individuelle Ernährungsumstellung, Bewegungs-und Psychotherapie können unabhängig von schulmedizinischer Medikamentengabe die Symptome verbessern.
Residuelles Mammakarzinom
Authors: Krome Susanne
Published: July 2019

Die systemische postoperative Standardtherapie früher HER2-positiver Mammakarzinome erfolgt mit HER2-Antikörpern und Hormonbehandlung. Dabei spielt der histopathologische Remissionsstatus im Operationspräparat keine Rolle. Die randomisierte Phase-III-Studie KATHERINE untersuchte die Rezidivrate bei Frauen, die nach der neoadjuvanten taxanbasierten Chemotherapie und Trastuzumab noch residuelle Tumorzellen aufwiesen. Sie erhielten zur Rezidivprophylaxe 14 Kurse Trastuzumab oder das Antikörper-Wirkstoff-Konjugat Trastuzumab Emtansin (T-DM1).
SG-BCC 2019: Neue Strategien beim frühen Brustkrebs
Authors: Arnheim Katharina
Published: July 2019

In bisherigen Neoadjuvanz-Studien war das Erreichen einer möglichst hohen Rate an pathologischen Komplettremissionen (pCR) ein wichtiges Ziel. In aktuellen Studien versucht man jetzt, die Prognose von Patientinnen ohne pCR durch neue intensivierte Therapien zu verbessern.
ACUTE LEUKEMIAS XVII: Aktuelles von FTL3-Inhibitoren, IDH-Inhibitoren und SYK-Inhibitoren
Authors: Fessler Beate
Published: July 2019

Die akute myeloische Leukämie (AML) hat nach wie vor eine schlechte Prognose. Das könnte sich mit der Entwicklung zielgerichteter Therapien bald ändern. Auf dem internationalen Symposium „Acute Leukemias XVII“ wurden neue vielversprechende Optionen für Patienten mit AML vorgestellt, die zielgenau eingesetzt werden. Interessant sind vor allem Kombinationstherapien.
Fortgeschrittenes nicht-kleinzelliges Bronchialkarzinom
Authors: Krome Susanne
Published: July 2019

Im Plasma zirkulierende Tumor-DNA (Liquid Biopsy) ist ein viel diskutiertes Thema und ein schon jetzt genutztes Instrument, um Rezidive, die Resistenzlage und die Effektivität zielgerichteter Therapien einzuschätzen. Die prospektive Studie überprüfte den Nutzen für das Behandlungsmanagement bei Patienten mit einem nicht-kleinzelligen Bronchialkarzinom (NSCLC) im Stadium IV.
Venous Malformation of the Parotid Gland
Authors: Zareena Shifa , Dinesh K.B. , Narayanasami Bharath , Marunraj G. , Rekha Arcot
Published: July 2019

Vascular malformations of the parotid gland are extremely rare. A 23-year-old female presented with tender parotid swelling with mild compressibility. Diagnosis was made by ultrasonogram and confirmed by magnetic resonance imaging. Facial nerve preserving surgical excision of the superficial parotid gland with infiltration of foam sclerosant was done.
Microscope uses deep ultraviolet spectroscopy and near-field optics for high lateral resolution
Authors: Jaycen Amelia
Published: July 2019

Researchers developed a new scanning near-field optical microscope with a deep ultraviolet laser, which avoids diffraction limits, extends operational time and stabilizes power and pointing.
Original method used to investigate process of inserting/deleting a particle during Grand-Canonical Monte Carlo Simulations
Authors: Mandel Savannah
Published: July 2019

Hybrid 4 Dimension (H4D) strategy allows for extended reaction time to smooth the insertion/deletion process of a particle during Grand Canonical Monte Carlo Simulations.
Influence of water molecule bridges on sequestration of phenol in soil organic matter of sapric histosol
Authors: Ondruch Pavel , Kucerik Jiri , Tunega Daniel , Silva Nadeesha J. , Aquino Adelia J. A. , Schaumann Gabriele E.
Published: July 2019

Environmental contextImmobilisation of organic chemicals in soil organic matter can strongly influence their availability in the environment. We show that the presence of water clusters, called water molecule bridges, hampers the release of organic molecules from soil organic matter. Moreover, water molecule bridges are sensitive to changes in environmental conditions (e.g., temperature or moisture) which affect the release of organic molecules into the environment.
AbstractWater molecule bridges (WaMB) can stabilise the supramolecular structure of soil organic matter (SOM) by connecting individual SOM molecular units. WaMB are hypothesised to act as a desorption barrier and thus to physically immobilise molecules in SOM. To test this hypothesis, we prepared two sets of soil samples – aged samples with WaMB developed, and vacuumed samples, in which WaMB were disrupted. The samples were spiked with phenol and then stored under controlled humidity. The degree of phenol immobilisation in SOM was assessed by desorption kinetics of phenol into a gas phase. This was compared with the thermal stability (T*) of WaMB obtained by modulated differential scanning calorimetry (MDSC) and the results were related to computer modelling, which provided the stability and solvation energies of phenol-WaMB-SOM models. The desorption kinetics of phenol was best described by a first-order model with two time constants ranging between 1 and 10h. In aged samples, the time constants correlated with T*, which showed that the desorption time increased with increasing WaMB stability. Molecular modelling proposed that phenol molecules are preferentially locked in nanovoids with polar OH groups pointed to WaMB in the most stable configurations. Both findings support the hypothesis that WaMB can act as a desorption barrier for phenol.
A criterion-based approach to oral feedback on thesis writing
Authors: Dyson Bronwen Patricia
Published: July 2019

Is oral feedback on thesis writing from supervisors and academic literacy advisors (ALA) based on writing criteria, such as the MASUS (Measuring the Academic Skills of University Students) criteria (Bonanno & Jones, 2007)? The study aimed to investigate the distribution of supervisory and ALA oral feedback in terms of the five MASUS Areas. These Areas of writing were used to analyze fortnightly meetings between two L2 English doctoral candidates and their supervisors (eight meetings) and an ALA (eight meetings). The findings showed that the feedback moves were distributed across the Areas and most moves were produced in multi-Area episodes. However, compared to the ALA, the supervisors covered the Areas less comprehensively, used fewer single-Area episodes, and combined sources with structure. The article concludes that oral feedback on thesis writing is criterion-based, and supervisors can inform their feedback and develop their students’ skills by employing tools such as MASUS.