bluuebunny/crossref_metadata_2025_split huggingface dataset:
Effectiveness of combination endoscopic therapy for colonic anastomotic leaks
Authors: Thiruvengadam Nikhil R. , Hamerski Christopher , Nett Andrew , Bhat Yasser , Shah Janak , Bernabe Jona , Kane Steven , Binmoeller Kenneth , Watson Rabindra R. 
Published: June 2020

AbstractBackground Colonic anastomotic leaks are associated with significant morbidity and mortality. Whereas small case series suggest that fully covered self-expandable metal stents (FCSEMS) are effective, no larger studies have examined the impact of combination endoscopic therapy on colonic anastomotic leaks.Methods Our retrospective cohort study reviewed 51 patients undergoing endoscopic therapy for colonic anastomotic leaks between 2011 and 2018. Patients receiving combination therapy involving FCSEMS plus local closure (n = 24) were compared with patients receiving FCSEMS alone (n = 18) or endoscopic suturing alone (n = 9). The primary outcomes were technical and clinical success (resolution of leak, removal of percutaneous drains, avoidance of surgical reoperation, and reversal of temporary diversion).Results Clinical success was achieved in 55 % of patients. Clinical success was achieved in 18/24 patients (75 %) with combination therapy compared with 6/18 patients receiving FCSEMS alone (33 %, adjusted risk ratio [RR] 2.16, 95 % confidence interval [CI] 1.10 – 4.24; P = 0.02) and 4 /9 patients undergoing endoscopic suturing alone (44 %, RR 1.91, 95 %CI 0.84 – 4.31; P = 0.10). Stent migration occurred in 40 % of patients.Conclusions This large series demonstrates that combination therapy was associated with a higher rate of clinical success, and future prospective studies are warranted.
Ultrasonographic Transabdominal Measurement of Uterine Cervical Length for the Prediction of a Midtrimester Short Cervix
Authors: Guerby Paul , Beaudoin Annie , Marcoux Geneviève , Girard Mario , Pasquier Jean-Charles , Bujold Emmanuel 
Published: June 2020

Objective This study was aimed to estimate the value of transabdominal (TA) ultrasound measurement of cervical length (CL), as an alternative of transvaginal (TV) ultrasound, for universal screening of short cervix in the midtrimester.
Study Design We conducted a prospective cohort study of nulliparous women with singleton pregnancy at 20 to 24 weeks of gestation. All participants underwent TA ultrasound followed by TV ultrasound with acquisitions of images and videos of the uterine cervix. A second sonographer, blinded to the participants' data and pregnancy outcomes, measured the CL using TA and TV images and videos. Pearson's correlation test and receiver operating characteristic (ROC) curve analyses were performed.
Results A total of 805 participants were recruited, including 780 (97%) where TA CL measurement was feasible. We observed a strong correlation of CL between TA and TV (correlation coefficient: 0.57; p < 0.0001) with a mean TA measurement being 4 mm (95% confidence interval [CI]: −6 to 14 mm) below the mean TV measurement (mean of differences: 5 ± 4 mm). We observed that a TA CL <30 mm was highly predictive of a short cervix defined as a TV CL ≤25 mm (area under the ROC curve: 0.97; 95% CI: 0.95–0.99; p < 0.0001) with a sensitivity of 100% and a false-positive rate of 22%.
Conclusion Universal short cervix screening in nulliparous women could be performed using TA ultrasound, which could allow the avoidance of TV ultrasound in more than three quarter of women. In low-risk population, TV ultrasound could be reserved to women with TA CL <30 mm.
Key Points
Catalysis by platinum and palladium species confined in the bulk of glass fibre materials
Authors: Bal’zhinimaev Bair S. 
Published: June 2020

The results of studies on the application of silicate glass fibre materials in catalysis are summarized and analyzed. Despite the very low noble metal content, catalysts based on these materials showed exceptionally high activities and selectivities in some catalytic reactions. This is due to specificity of the glassy state, which makes it possible, first, to confine highly dispersed palladium and platinum species in the bulk of glass fibres and, second, selectively absorb polar molecules, thus excluding the undesirable reactions involving non-polar molecules. The size dependences of the complete oxidation of propane and selective hydrogenation of acetylene, the nature of the structure sensitivity of these reactions and the reaction mechanisms are discussed. Ways for improving glass fibre catalyst performance are proposed and examples of the successful application of Pt/glass fibre catalysts for purification of industrial gases from volatile organic compounds are given.
The bibliography includes 175 references.
Perimidines: a unique π-amphoteric heteroaromatic system
Authors: Pozharskii Alexander F. , Gulevskaya Anna V. , Claramunt Rosa M. , Alkorta Ibon , Elguero José 
Published: June 2020

Data on the physicochemical characteristics, theoretical calculations, reactivity and synthetic methods for perimidines are summarized. Although perimidine and some of its simple 2-substituted derivatives were obtained by Sachs back in 1909, their chemistry and key physical properties remained unknown until the early 1970s. Subsequent studies revealed many fundamental features of the perimidine system, previously not encountered in the heterocyclic series. The first comprehensive review on perimidines was published forty years ago. The period that has passed since 1980 led to the emergence of new directions and trends. Several hundred new publications have appeared, the generalization of which has become the main purpose of this article. This primarily concerns the obtaining of highly nucleophilic and stable perimidine carbenes, new methods of electrophilic substitution and oxidation, establishment of a close relationship between perimidines and proton sponges, and modern theoretical calculations. Based on perimidines, many different polycondensed systems have been obtained. Applied research has developed especially rapidly in recent years. Many new compounds based on perimidines related to chemosensors, analytical reagents, dyes, metal catalysts, electronic devices, nanotechnology, and medical chemistry have been proposed. Some information under review is presented as Supplementary Materials. It contains six tables, which include data on the basicity constants of perimidines, details of some synthetic methods for perimidines and fused analogs and also a list of biological activities of perimidines.
The bibliography includes 387 references.
A continuously scanning separate-crystal single-photon x-ray interferometer
Authors: Andreas B , Kuetgens U 
Published: June 2020

Abstract
The feasibility of a new design and measurement concept of a combined optical and x-ray interferometer (COXI) is demonstrated here. Mechanical noise in the x-ray interferometer can be cancelled efficiently with fast and synchronous detection of the optical interferometer phase and x-ray counts. The scan-length requirement of the decadic step method of conventional COXI setups is reduced by more than one order of magnitude due to the correlation between single-photon interference events. The actual scan length of the shown setup is limited to 4 µm. It is estimated that a future update will enable us to measure the lattice parameter of 28Si, at least with the targeted relative statistical reproducibility of 3 × 10−9.
Time-resolved open-circuit conductive atomic force microscopy for direct electromechanical characterisation
Authors: Calahorra Yonatan , Kim Wonjong , Vukajlovic-Plestina Jelena , Fontcuberta i Morral Anna , Kar-Narayan Sohini 
Published: June 2020

Abstract
Studying nanomaterial piezoelectricity and triboelectricity is attractive for energy and sensing applications. However, quantitative characterisation of electromechanical effects in nanomaterials is challenging due to practical limitations and possible combination of effects, resulting in contradicting reports at times. When it comes to piezoelectricity at the nanoscale, piezoresponse force microscopy (PFM) is the default characterisation tool. In PFM the converse piezoelectric effect is measured - the conversion from electrical signal to mechanical response. However, there is an underlying desire to measure the direct piezoelectric effect - conversion of mechanical deformation to an electrical signal. This corresponds to energy harvesting and sensing. Here we present time-resolved open-circuit conductive atomic force microscopy (cAFM) as a new methodology to carry out direct electromechanical characterisation. We show, both theoretically and experimentally, that the standard short-circuit cAFM mode is inadequate for piezoelectric characterisation, and that resulting measurements are governed by competing mechanisms. We apply the new methodology to nanowires of GaAs, an important semiconductor, with relatively low piezoelectric coefficients. The results suggest that time-resolved operation distinguishes between triboelectric and piezoelectric signals, and that by measuring the open-circuit voltage rather than short-circuit current, the new methodology allows quantitative characterisation of the vertical piezoelectric coefficient. The result for GaAs nanowires, ∼ 1–3 pm V−1, is in good agreement with existing knowledge and theory. This method represents a significant advance in understanding the coexistence of different electromechanical effects, and in quantitative piezoelectric nanoscale characterisation. The easy implementation will enable better understanding of electromechanics at the nanoscale.
The magnetic asymmetry effect in geometrically asymmetric capacitively coupled radio frequency discharges operated in Ar/O2
Authors: Oberberg M , Berger B , Buschheuer M , Engel D , Wölfel C , Eremin D , Lunze J , Brinkmann R P , Awakowicz P , Schulze J 
Published: June 2020

Abstract
Previous studies in low pressure magnetized capacitively coupled radio frequency (RF) plasmas operated in argon with optimized geometric reactor symmetry have shown that the magnetic asymmetry effect (MAE) allows to control the particle flux energy distributions at the electrodes, the plasma symmetry, and the DC self-bias voltage by tuning the magnetron-like magnetic field adjacent to one electrode (Oberberg et al 2019 Plasma Sources Sci. Technol.
28 115021; Oberberg et al 2018 Plasma Sources Sci. Technol.
27 105018). In this way non-linear electron resonance heating (NERH) induced via the self-excitation of the plasma series resonance (PSR) was also found to be controllable. Such plasma sources are frequently used for reactive RF magnetron sputtering, but the discharge conditions used for such applications are significantly different compared to those studied previously. A high DC self-bias voltage (generated via a geometric reactor asymmetry) is required to realize a sufficiently high ion bombardment energy at the target electrode and a reactive gas must be added to deposit ceramic compound layers. Thus in this work, the MAE is investigated experimentally in a geometrically asymmetric capacitively coupled RF discharge driven at 13.56 MHz and operated in mixtures of argon and oxygen. The DC self-bias, the symmetry parameter, the time resolved RF current, the plasma density, and the mean ion energy at the grounded electrode are measured as a function of the driving voltage amplitude and the magnetic field at the powered electrode. Results obtained in pure argon discharges are compared to measurements performed in argon with reactive gas admixture. The results reveal a dominance of the geometrical over the magnetic asymmetry. The DC self-bias voltage as well as the symmetry parameter are found to be only weakly influenced by a change of the magnetic field compared to previous results obtained in a geometrically more symmetric reactor. Nevertheless, the magnetic field is found to provide the opportunity to control NERH magnetically also in geometrically asymmetric reactors. Adding oxygen does not alter these discharge properties significantly compared to a pure argon discharge.
Precursor magneto-sonic solitons in a plasma from a moving charge bunch
Authors: Kumar Atul , Sen Abhijit 
Published: June 2020

Abstract
The nature of fore-wake excitations created by a charge bunch moving in a magnetized plasma is investigated using particle-in-cell simulations. Our studies establish for the first time the existence of precursor magneto-sonic solitons traveling ahead of a moving charge bunch. The nature of these excitations and the conditions governing their existence are delineated. We also confirm earlier molecular dynamic and fluid simulation results related to electrostatic precursor solitons obtained in the absence of a magnetic field. The electromagnetic precursors could have interesting practical applications such as in the interpretation of observed nonlinear structures during the interaction of the solar wind with the Earth and the Moon and may also serve as useful tracking signatures of charged space debris traveling in the ionosphere.
A hybrid Body-Machine Interface integrating signals from muscles and motions
Authors: Rizzoglio Fabio , Pierella Camilla , De Santis Dalia , Mussa-Ivaldi Ferdinando , Casadio Maura 
Published: June 2020

Abstract

Objective. Body-Machine Interfaces (BoMIs) establish a way to operate a variety of devices, allowing their users to extend the limits of their motor abilities by exploiting the redundancy of muscles and motions that remain available after spinal cord injury or stroke. Here, we considered the integration of two types of signals, motion signals derived from inertial measurement units (IMUs) and muscle activities recorded with electromyography (EMG), both contributing to the operation of the BoMI. Approach. A direct combination of IMU and EMG signals might result in inefficient control due to the differences in their nature. Accordingly, we used a nonlinear-regression-based approach to predict IMU from EMG signals, after which the predicted and actual IMU signals were combined into a hybrid control signal. The goal of this approach was to provide users with the possibility to switch seamlessly between movement and EMG control, using the BoMI as a tool for promoting the engagement of selected muscles. We tested the interface in three control modalities, EMG-only, IMU-only and hybrid, in a cohort of 15 unimpaired participants. Participants practiced reaching movements by guiding a computer cursor over a set of targets. Main results. We found that the proposed hybrid control led to comparable performance to IMU-based control and significantly outperformed the EMG-only control. Results also indicated that hybrid cursor control was predominantly influenced by EMG signals. Significance. We concluded that combining EMG with IMU signals could be an efficient way to target muscle activations while overcoming the limitations of an EMG-only control.
Understanding physical settings of street vendors in Surakarta, Indonesia
Authors: Kesumasari D 
Published: June 2020

Abstract
This study discussed the physical settings of street vendors in Surakarta and how they affected customers’ comfortability. Methods used were observation, place centered mapping, photo documentations, and informal interviews. Analysis was done qualitatively until a conclusion was obtained. Results of the study were types of prepared-food street vendors in Surakarta, namely: warung tenda, angkringan, street food carts (unmodified and modified carts), and unmovable stalls (semi-permanent and permanent stalls). Street vendor’s physical settings influenced customers’ physical and social comfortability. Physical comfortability was derived from street vendors’ location which usually under shade trees, consumer area was in open area, and not covered by tarps, has cool temperature, customers can sit comfortably, and customers can sit lesehan. Social comfortability was obtained when customers have a space to socialize; regardless the space was physically narrow. Factors related to social comfortability are the seller’s hospitality; customers can have a chat for hours, and low price food. In urban scale, it is hoped that this research can help the municipal government in formulating better policies related to street vendor management, specifically in developing clusters of street vendors (Shelter PKL).
Reinforcing identity: Bringing the new face of Malioboro Historic Place, Yogyakarta, Indonesia
Authors: Widyastuti D T 
Published: June 2020

Abstract
The significant character of architecture for the majority places in the world will shape unique identity of place. Malioboro Street is a main commercial, historic and cultural corridor in the historic city of Yogyakarta, Indonesia. For couple of years, because of the modern development and economic reasons, the unique characters of buildings in Malioboro was going to fade away, covered mostly by commercial signboard, and some others had a different appearance from street walls pattern. This paper aims to examine to what extent the changes in the character of Malioboro street facades before and after the interference from the local government and how far the commercial signboard ‘hides’ the uniqueness of the building facades before and after the government initiatives was published. A qualitative method is carried out to examine to what extent the modernity and commercial interests influence the continuity of typical building facades in Malioboro Street. This method attempts to measure the degree of continuity in facade of significant buildings through calculation of the coverage percentage and placement of commercial signboard. The result shows there are significant positive change in bringing back the identity of Malioboro regarding the type, size, and placement of building façade commercial signboard.
Daylight performance of horizontal light pipe with egg-crate reflector in the tropics
Authors: Elsiana F , Soehartono F , Kristanto L 
Published: June 2020

Abstract
Horizontal Light Pipe (HLP) is one of a light transport system that can guide daylight deeper into building interiors. Improvement of HLP’s light distribution by installing an egg-crate reflector at its opening distribution was conducted. The study’s aim was to evaluate and explain the daylight performance of HLP with an egg-crate reflector at office space in the tropics. Experiment with physical scaled model 1:5 was used as a research method. Illuminance value, Daylight Factor (DF), uniformity ratio and diversity of illuminance of an office space lit by side window (base case) were compared to the office space lit by side window and HLP with an egg-crate reflector (case), simultaneously with daylighting standards. The results showed that HLP with egg-crate reflector improved daylight level and distribution. Improvement of DF and illuminance level were in the range of 16.6 % to 56.6 %. The uniformity ratio of the base case was in the range of 0.35 to 0.45, while in the case was in the range of 0.48 to 0.66. The diversity of illuminance of the base case at a low altitude of the sun (15:00) exceeded 5:1 while in the case was kept lower than 5:1 at all the measurement time.
Kalanganyar River, Sidoarjo Regency, Indonesia as a natural urban catalyst, living place or society pest
Authors: Mutia F , Elviana E , Yunisya A N 
Published: June 2020

Abstract
River as a water source became the most important part of Nusantara’s Architecture. Unfortunately, Kalanganyar River, Sidoarjo Regency, Indonesia has become a scapegoat for serious urban problems. Regarding the potentials as an urban catalyst, the function of the river varies, as a junk-space although in many parts of it, is a centre of life. This research is qualitative research with phenomenology approach. Character appraisal was conducted to analyze non-physical aspects. The physical aspects then analyzed through a walkthrough analysis. The results showed that as an urban catalyst, Kalanganyar River did enhance their surroundings to be more livable and giving a characteristic of the coastal area. The utilization of natural potential in the form of water banks is the main focus of coastal architectural characteristics. The rapid development until now should make the Government should reb thinking again about the regulations how far it can save the nature of the river.
Development of the solar-energized foodstuff drying system for urban communities
Authors: Susanto H , Setyobudi R H , Chan Y , Nur S M , Yandri E , Burlakovs J , Asbanu H , Nugroho Y A , Jani Y 
Published: June 2020

Abstract
Urban in Indonesia, is no longer limited as a center of community settlement. Now the city also functions as a center of government, a central hierarchy, and a center of economic growth. As a logical consequence of the role of cities as a center of growth and economy, urban contributions to national economic growth are increasing. To overcome this problem, a portable conveyor of solar-energized drying system was designed. With the portable conveyor of solar-energized drying system, the dryer will be easily moved and flexible to use. The advantage of portable conveyor of solar-energized drying system is the drying process could be done continuously with a little human power. Therefore, this portable conveyor of solar-energized drying system is designed to use renewable energy sources. To examine the portable conveyor of solar-energized drying system, the foodstuff was used for a testing of ingredients. The portable conveyor of solar-energized drying system testing show that the amount of water content in the foodstuff reduced, the drying rate accelerate. In addition, the amount of heat energy needed for the drying process also reduced. Hence process of drying foodstuff more efficienct.
Violation factors of the building coverage ratio: A study in Trimulyo Genuk, Semarang, Indonesia
Authors: Khadiyanto P , Soetomo S , Hadi S P 
Published: June 2020

Abstract
Excessive Building Coverage Ratio (BCR) defined as shutting of land that is supposed to be exposed, may have a significant impact on water infiltration, eventually leading to a higher risk of both drought and flooding. The objective of this research is to find the causative factors of violated BCR in a highly flood-prone area. Using a cross-tabulation method, the cause of the violation of the BCR divided by external and internal factors. External factors, such as the absence of sanctions, large area of land owned and less understanding on what BCR is, had a negative correlation with violations. On the other hand, internal factors, such as income, household enterprises, and household size, had a positive correlation with BCR violations. The conclusion of this study that there have been insufficient propagation to the public about the BCR, resulting in most people being indifferent to, or unaware of, the disadvantages and dangers arising from the violation thereof.
Growth and productions of crossing between brown rice accessions and submergence rice variety of Inpara 5
Authors: Hasmeda M , Rujito R , Suwignyo A , Hamidson H , Akbar M F 
Published: June 2020

Abstract
This study was aimed to determine the growth and production of brown rice accessions which were tolerant to submergence stress. The study was conducted in Greenhouse, Faculty of Agriculture, Sriwijaya University, Indralaya, Ogan Ilir. This study used Randomized Block Design and Top cross method of a breeding program. The results indicated that Inpara 5 varieties showed better results on plant height, number of tillers, panicle number, 1000 grain weight and yield potential per plant. The accession of fragrant Brown Rice has better results in panicle length and the number of grains per panicle. The accession of Early/Genjah Brown Rice has better results in flowering age and harvesting time compared to Inpara 5 varieties and fragrant brown rice. The success of breeding between Fragrant Brown Rice and Inpara 5 was higher compare to Early Brown Rice and Inpara 5.