bluuebunny/crossref_metadata_2025 huggingface dataset:
Simple rapid stabilization method through citric acid modification for magnetite nanoparticles
Authors: Dheyab Mohammed Ali , Aziz Azlan Abdul , Jameel Mahmood S. , Noqta Osama Abu , Khaniabadi Pegah Moradi , Mehrdel Baharak
Published: July 2020

A highly stable and magnetized citric acid (CA)-functionalized iron oxide aqueous colloidal solution (Fe3O4@CA) was synthesized by using a simple and rapid method of one-step co-participation via a chemical reaction between Fe3+ and Fe2+ in a NaOH solution at 65 °C, followed by CA addition to functionalize the Fe3O4 surface in 25 min. The NPs were synthesized at lower temperatures and shortened time compared with conventional methods. Surface functionalization is highly suggested because bare Fe3O4 nanoparticles (Fe3O4 NPs) are frequently deficient due to their low stability and hydrophilicity. Hence, 19 nm-sized Fe3O4 NPs coated with CA (Fe3O4@CA) were synthesized, and their microstructure, morphology, and magnetic properties were characterized using X-ray diffraction, transmission electron microscopy, Zeta potential, Fourier transform infrared spectroscopy, and vibrating sample magnetometer. CA successfully modified the Fe3O4 surface to obtain a stabilized (homogeneous and well dispersed) aqueous colloidal solution. The Zeta potential value of the as-prepared Fe3O4@CA increases from − 31 to − 45 mV. These CA-functionalized NPs with high magnetic saturation (54.8 emu/g) show promising biomedical applications.
Correction: A paper-supported sandwich immunosensor based on upconversion luminescence resonance energy transfer for the visual and quantitative determination of a cancer biomarker in human serum
Authors: He Mengyuan , Shang Ning , Shen Lin , Liu Zhihong
Published: July 2020

Correction for ‘A paper-supported sandwich immunosensor based on upconversion luminescence resonance energy transfer for the visual and quantitative determination of a cancer biomarker in human serum’ by Mengyuan He et al., Analyst, 2020, 145, 4181–4187, DOI: 10.1039/c9an02307k.
Engineering a homochiral metal–organic framework based on an amino acid for enantioselective separation
Authors: Tang Haitong , Yang Keke , Wang Kun-Yu , Meng Qi , Wu Fan , fang Yu , Wu Xiang , Li Yougui , Zhang WenCheng , Luo Yunfei , Zhu Chengfeng , Zhou Hong-Cai
Published: July 2020

A homochiral metal–organic framework is constructed from an amino acid-derived ligand and it exhibits high enantioseparation capacities for alcohols, epoxides, and ibuprofen.
Light-induced molecular rotation triggers on-demand release from liposomes
Authors: Ribovski Laís , Zhou Qihui , Chen Jiawen , Feringa Ben L. , van Rijn Patrick , Zuhorn Inge S.
Published: July 2020

Controllable molecular release from delivery vehicles is essential to successfully reduce drug toxicity and improve therapeutic efficacy.
Novel electrochemiluminescence solid-state pH sensor based on an i-motif forming sequence and rolling circle amplification
Authors: Ye Jing , Yan Mengxia , Zhu Liping , Huang Jianshe , Yang Xiurong
Published: July 2020

In this paper, we proposed an electrochemiluminescence solid-state pH sensor based on a pH-dependent i-motif forming sequence and rolling circle amplification strategy.
Highly uniform self-assembled microspheres from single macromolecule self-recognition for enhanced cancer immunotherapy
Authors: Shen Xin , Zhou Zhenxia , Qi Dongmei , Li Yanchao , Zeng Zhiying , He Xiao , Xia Xuefeng , Zhu Chuhong , Feng Xuli
Published: July 2020

Self-assembled highly uniform microspheres has been developed as a local drug delivery system for effective synergistic immunotherapy.
Achieving tunable emitting YAl3(BO3)4:Eu phosphors by substituting cations (Sr2+, Ca2+, Ga3+, In3+) and controlling BO3 group polarizability
Authors: Liu Jinjin , Wang Zhijun , Li Xue , Meng Xiangyu , Qiu Keliang , Wang Dawei , Zhao Jinxin , Lai Weidong , Yang Zhiping , Li Panlai
Published: July 2020

To explore the influence of the luminescence characteristics and valence state of Eu ions, a series of YAl3(BO3)4−m(PO4)m:0.05Eu, Y0.925−xACxLxBO:0.05Eu, Y0.925−yASyLyBO:0.05Eu, Y0.925−zAGzBO:0.05Eu and Y0.925−wAIwBO:0.05Eu phosphors are synthesized.
Revisiting 2-chloro-4-nitroaniline: analysis of intricate supramolecular ordering of a triclinic polymorph featuring a highZvalue and strong second harmonic generation
Authors: Medviediev Volodymyr , Shishkina Svitlana , Ribalka A. O. , Zaręba Jan K. , Drozd Marek , Daszkiewicz Marek
Published: July 2020

A new polymorph of 2-chloro-4-nitroaniline is more stable than its 55 year-old antecedent.
Computational mechanistic investigation of the Fe + CO2 → FeO + CO reaction
Authors: Dias Vicentini Eduardo , de Lima Batista Ana P. , Sampaio de Oliveira-Filho Antonio G.
Published: July 2020

High-level investigation of the kinetics of the Fe + CO2 → FeO + CO reaction.
Revisiting stress–strain behavior and mechanical reinforcement of polymer nanocomposites from molecular dynamics simulations
Authors: Shen Jianxiang , Lin Xiangsong , Liu Jun , Li Xue
Published: July 2020

Through coarse-grained MD simulations, the effects of nanoparticle properties, polymer–nanoparticle interactions, chain crosslinks and temperature on the stress–strain behavior and mechanical reinforcement of PNCs are comprehensively investigated.
Thermodynamics, dynamics, and structure of supercritical water at extreme conditions
Authors: Yoon Tae Jun , Patel Lara A. , Ju Taeho , Vigil Matthew J. , Findikoglu Alp T. , Currier Robert P. , Maerzke Katie A.
Published: July 2020

Molecular dynamics (MD) simulations to understand the thermodynamic, dynamic, and structural changes in supercritical water across the Frenkel line and the melting line have been performed.
Photophysical and electrochemical properties of twotrans-A2B-corroles: differences between phenyl or pyrenyl groups at themeso-10 position
Authors: Acunha Thiago V. , Victória Henrique F. V. , Krambrock Klaus , Marques Amanda C. , Costa Luiz Antônio S. , Iglesias Bernardo A.
Published: July 2020

The photophysical properties of twomeso–trans-A2B-type corroles containing phenyl or pyrenyl units were reported in this study. TD-DFT calculations and electrochemical analysis were conducted to better understand the corrole molecular structures.
Near-IR light-induced photorelease of nitric oxide (NO) on ruthenium nitrosyl complexes: formation, reactivity, and biological effects
Authors: Giri Bishnubasu , Saini Taruna , Kumbhakar Sadananda , Selvan K Kalai , Muley Arabinda , Misra Ashish , Maji Somnath
Published: July 2020

Two new polypyridyl backboned ruthenium nitrosyl complexes have been synthesized which shows efficient NO photorelease and exhibits significant phototoxicity upon irradiation with the visible light in the VCaP prostate cancer cell line.
Efficient and selective aqueous photocatalytic mono-dehydration of sugar alcohols using functionalized yttrium oxide nanocatalysts
Authors: Yang Juncheng , Li Xiaoyong , Cheng Yu , Fan Chao , Pan Cheng , Huang Benhua , Meng Xu , Zhang Junjie , Zheng Aqun , Ma Xiaomo , Guo Lina , Luque Rafael , Zhang Weining , Sun Yang
Published: July 2020

The mono-dehydration of sugar alcohols such as d-sorbitol and d-mannitol generates 1,4-sorbitan and 1,4-mannitan, respectively, which are relevant platform molecules for the synthesis of detergents and pharmaceuticals.
Significant promotion effects of Ag oxide towards Pd catalysis for ethanol and methanol oxidation reactions
Authors: Liu Ruijie , Si Si , Hu Huashuai , Wang Chongbin , Feng Yuanyuan
Published: July 2020

Ag oxides play a crucial role in promoting the catalysis of Pd both for ethanol and methanol oxidation reactions.
A binder-free Ni2P2O7/Co2P2O7 nanograss array as an efficient cathode for supercapacitors
Authors: Matheswaran Priyadharshini , Karuppiah Pandi , Chen Shen-Ming , Thangavelu Pazhanivel
Published: July 2020

Binder-free Ni2P2O7/Co2P2O7 cathode of nanograss morphology, delivered an energy and power density of 33.2 W h kg−1 and 257.8 W kg−1 respectively. Through power law, the contribution of each type of mechanism in charge storage process was calculated.
Aldehyde trapping by self-propagating atom-exchange reactions on a gallium nitride monolayer: role of the molecule complexity
Authors: Alvarado-Leal L. A. , Martínez-Guerra E. , Fernandez-Escamilla H. N. , Guerrero-Sánchez J. , Takeuchi Noboru
Published: July 2020

The design of novel gas sensors based on two-dimensional systems has grown rapidly in the last few years due to the remarkable reactivity of their surfaces.
Supramolecular assembly of lanthanide-2,3,5,6-tetrafluoroterephthalic acid coordination polymers via fluorine⋯fluorine interactions: a platform for luminescent detection of Fe3+ and nitroaromatic compounds
Authors: Smith Jermaine A. , Singh-Wilmot Marvadeen A. , Carter Korey P. , Cahill Christopher L. , Ridenour J. August
Published: July 2020

F⋯F interactions stabilize {[Ln(TFTA)1.5(H2O)2]·H2O}n 2D coordination polymers which selectively detect Fe3+ and p-nitrophenols.
Two-stage activated nano-truck enhanced specific aggregation and deep delivery for synergistic tumor ablation
Authors: Zheng Ziliang , Chen Qi , Rong Shuo , Dai Rong , Jia Zhuo , Peng Xiaoyang , Zhang Ruiping
Published: July 2020

We have developed a novel tumor delivery nano-truck based on two-stage activation system that includes “braking effect” and “unloading process”, which provided an innovative strategy for PA/MRI-monitored CDT/PTT combination cancer therapy.
An efficient approach for the synthesis of new (±)-coixspirolactams
Authors: Nascimento Vinicius R. , Suenaga Melissa L. S. , Andrade Leandro H.
Published: July 2020

An easy access to (±)-coixspirolactam A and a large number of new coixspirolactams was developed.
Dual-binding conjugates of diaromatic guanidines and porphyrins for recognition of G-quadruplexes
Authors: Grover Jagdeep , Trujillo Cristina , Saad Mona , Emandi Ganapathi , Stipaničev Nikolina , Bernhard Stefan S. R. , Guédin Aurore , Mergny Jean-Louis , Senge Mathias O. , Rozas Isabel
Published: July 2020

The first conceptualised class of dual-binding guanine quadruplex binders has been designed, synthesised and biophysically studied.
Nitrogen-doped semiconducting oxides. Implications on photochemical, photocatalytic and electronic properties derived from EPR spectroscopy
Authors: Chiesa Mario , Livraghi Stefano , Paganini Maria Cristina , Salvadori Enrico , Giamello Elio
Published: July 2020

Engineered nitrogen defects in semiconducting oxides imparts appealing photophysical and photochemical properties to the materials which can be selectively addressed through EPR spectroscopy.
The Influence of Hearing Loss on Cognitive Control in an Auditory Conflict Task: Behavioral and Pupillometry Findings
Authors: Zekveld Adriana A. , van Scheepen J. A. M. , Versfeld Niek J. , Kramer Sophia E. , van Steenbergen Henk
Published: July 2020

Purpose

The pupil dilation response is sensitive not only to auditory task demand but also to cognitive conflict. Conflict is induced by incompatible trials in auditory Stroop tasks in which participants have to identify the presentation location (left or right ear) of the words “left” or “right.” Previous studies demonstrated that the compatibility effect is reduced if the trial is preceded by another incompatible trial (conflict adaptation). Here, we investigated the influence of hearing status on cognitive conflict and conflict adaptation in an auditory Stroop task.

Method

Two age-matched groups consisting of 32 normal-hearing participants (
M
age
= 52 years, age range: 25–67 years) and 28 participants with hearing impairment (
M
age
= 52 years, age range: 23–64 years) performed an auditory Stroop task. We assessed the effects of hearing status and stimulus compatibility on reaction times (RTs) and pupil dilation responses. We furthermore analyzed the Pearson correlation coefficients between age, degree of hearing loss, and the compatibility effects on the RT and pupil response data across all participants.

Results

As expected, the RTs were longer and pupil dilation was larger for incompatible relative to compatible trials. Furthermore, these effects were reduced for trials following incompatible (as compared to compatible) trials (conflict adaptation). No general effect of hearing status was observed, but the correlations suggested that higher age and a larger degree of hearing loss were associated with more interference of current incompatibility on RTs.

Conclusions

Conflict processing and adaptation effects were observed on the RTs and pupil dilation responses in an auditory Stroop task. No general effects of hearing status were observed, but the correlations suggested that higher age and a greater degree of hearing loss were related to reduced conflict processing ability. The current study underlines the relevance of taking into account cognitive control and conflict adaptation processes.
Accurate analytic formula for light bending in Schwarzschild metric
Authors: Poutanen Juri
Published: July 2020

We propose new analytic formulae describing light bending in the Schwarzschild metric. For an emission radii above the photon orbit at the 1.5 Schwarzschild radius, the formulae have an accuracy of better than 0.2% for the bending angle and 3% for the lensing factor for any trajectories that turn around a compact object by less than about 160°. In principle, they can be applied to any emission point above the horizon of the black hole. The proposed approximation can be useful for problems involving emission from neutron stars and accretion discs around compact objects when fast accurate calculations of light bending are required. It can also be used to test the codes that compute light bending using exact expressions via elliptical integrals.
The diffuse gamma-ray emission toward the Galactic mini starburst W43
Authors: Yang Rui-Zhi , Wang Yuan
Published: July 2020

In this paper we report the Fermi Large Area Telescope (Fermi-LAT) detection of the γ-ray emission toward the young star forming region W43. Using the latest source catalog and diffuse background models, the extended γ-ray excess is detected with a significance of ~16σ. The γ-ray emission has a spectrum with a photon index of 2.3 ± 0.1. We also performed a detailed analysis of the gas content in this region by taking into account the opacity correction to the HI gas column density. The total cosmic-ray (CR) proton energy is estimated to be on the order of 1048 erg, assuming the γ-rays are produced from the interaction of the accelerated protons and nuclei with the ambient gas. Comparing this region to the other star formation regions in our Galaxy, we find that the CR luminosity is better correlated with the wind power than the star formation rate (SFR). This result suggests that CRs are primarily accelerated by stellar wind in these systems.
Probing the dynamics of biological matter by elastic, quasi-elastic, and inelastic neutron scattering
Authors: Schirò Giorgio
Published: July 2020

The so-called function-structure-dynamics paradigm established that a close relationship links the way biological molecules work (function), their 3-dimensional organization (structure) and the changes of this organization in time (dynamics), which characterize biomolecules as highly dynamic objects. A typical example of protein dynamics is provided by protein reactions with substrates: equilibrium thermal fluctuations of protein structure are necessary to allow the access of substrates to the active site, where the functional reaction occurs. Neutron scattering is a powerful technique to study equilibrium protein structural dynamics. The incoherent structure factor, which is dominant in neutron scattering from biological matter, is related to the time-position self correlation function of protein/solvent nuclei. Here the basic theory of neutron scattering and the principles of the technologies used to measure it are described. Some selected applications of neutron scattering for investigating the structural dynamics of biological molecules are also reviewed.
Managing the crack energy dissipation as a way to increase the durability of fine-grained limestone concrete
Authors: Belov Vladimir , Kuliaev Pavel , Barkaya Temur
Published: July 2020

The durability of fine-grained concrete is associated with the process of cracking. The propagation of cracks depends on the energy dissipation rate. The results of the tests presented show the effectiveness of a limestone microdispersed filler and superplasticizer for increasing the durability of fine-grained carbonate concrete.
Removal of residual stresses in aircraft structural elements by pulsating subsonic gas flows treatment
Authors: Kovalenko Gennadiy , Ivanov Denis
Published: July 2020

The paper presents a promising method of removing undesirable tensile residual stresses in aircraft metal structural elements; the basis of the method is the action of pulsating subsonic gas flows on the surface of these elements. The results of the research showed high effectiveness of controlling residual stresses in aircraft metal structural elements by using pulsating subsonic air flows.
Collecting finely-dispersed particles from the gas flow in a centrifugal separator with coaxially arranged pipes
Authors: Zinurov Vadim E. , Dmitrieva Oksana S. , Popkova Oksana S.
Published: July 2020

The article deals with the problem of increasing the efficiency of dedusting the gas flow from the finely dispersed particles smaller than 10 μm. In order to solve this problem, a design of centrifugal separator with coaxially arranged pipes is proposed. The described principle of operation includes the large values of centrifugal forces, which take place inside the device when the flow is swirled, and these forces throw the finely dispersed particles to the walls of device. This scientific paper shows a numerical simulation of gas flow dedusting process by means of ANSYS Fluent software package. The efficiency of dedusting the gas from the finely dispersed particles of up to 10 μm in the device is on average within the range of 53.8–76.7%. The exponential function, describing the changes in the pressure loss from the input gas rate, is obtained. In the course of studies, it was found that the pressure loss in the device is not more than 800 Pa at the input gas rate from 3 to 19 m/s.
The growth mechanism of ordered nanoporous alumina
Authors: Makhmud-Akhunov Marat , Adamovich Artem , Yavtushenko Igor
Published: July 2020

The paper scrutinizes the peculiarities of porous alumina growth during electrochemical anodic oxidation in the orthophosphoric acid solution at constant potential of 100 Volt. On the basis of atomic-force microscopy data the paper presents consecutive stages of ordering pores in the oxide with the formation of hexagonal dense package after two-stage anodic treatment.
The prospects of using the silver nanoparticles composition in sodium alginate matrix
Authors: Kubyshkin Anatoly , Pisareva Olga , Bessalova Yevgenia , Fomochkina Irina
Published: July 2020

A wide range of anti-inflammatory properties of the solution of nanosilver has found its application in medical practice. In this work, nano-silver was used in the treatment of burn wounds in combination with a proteinase inhibitor. An experimental model of a second-degree burn with the use of a nano-silver solution in combination therapy is accompanied by a decrease in the inhibitory potential at the local level and stimulation of regeneration processes, which indicates the anti-inflammatory effects of nano-silver particles. There is also a decrease in the morphological signs of inflammation in the burned areas of the skin of the therapeutic use of a solution of nano-silver. The results indicate that nano-silver solution for prophylactic and therapeutic use has the ability to block a cascade of inflammatory reactions in the focus of damage, as it is evidenced by a decrease in the degree of alteration and intensification of reparative processes in damaged tissues.
Structure Analysis and Design of Automobile plastic clutch pump body based on friction welding
Authors: Sheng Jing , Sohail Aamir , Wang Mengguang , Wang Zhimin
Published: July 2020

In order to realize the need for lightweight automobiles through replacing steel with plastics, the research and development of the plastic clutch pump body based on the friction welding was carried out. For the clutch pump body connected by friction welding process between the upper pump body and the lower pump body, the technical requirements of pressure 14 MPa and durability (high temperature 7.0 × 104 times, room temperature 7.0 × 105) are required. The structure type of the upper and lower pump bodies of the end face welding type was proposed. Through the static analysis of the pump body and weld and the mechanical analysis under the working condition, the structure of the clutch pump body (upper and lower pump body) was determined. According to the established welding process, the pressure of the clutch pump body is more than 15 MPa, and the number of high-temperature durable circulation and the number of room temperature durable circulation also reached 7.2×104 and 7.3×105 times respectively. The results show that the structural design of a clutch pump body meets the design requirements.
Effectiveness Evaluation of Aircraft Electromagnetic Launch System Based on RIMER
Authors: Lin Zhiqiang , Chen Guiming , Liu Hanzeng
Published: July 2020

Electromagnetic launching technology is one of the important application technologies in aerospace field in the future. It will change the way of rocket launching and even be applied to aerospace kinetic energy weapon system. Aiming at the characteristics of various bottom indicators, uncertain information probability and expert participation in the effectiveness evaluation system of aircraft electromagnetic ejection system, based on the index hierarchy model, the method of RIMER(rule-base inference methodology using the evidential reasoning) is used to evaluate the effectiveness, which provides some reference for the design and development of aircraft electromagnetic launching system.
A C++ Based Modular Simulation Software of Satellites Earth Observation Mission Planning
Authors: Liang Xiaoheng , Gao Yang , Liu Shenggang
Published: July 2020

A simulation software for efficient analysis and rapid planning of multi-satellite earth observation mission is designed to solve the problem that it is difficult to make fast decisions for multi-target and multi-constraint earth observation mission. The software is developed with C++ programming language, which has the advantages of modular design, good portability, fast running speed and less occupation of resources. Meanwhile, the input and output interfaces of the software adopt the file format of an extensible mark-up language, which can easily realize cross-platform (Windows, Linux, etc.) data exchange. The simulation results show that the software has high execution speed and precision.
Progress of Electromagnetic Compatibility Design for Unmanned Aerial Vehicles
Authors: Wu Yong , Ma Qishuang , Xu Ping
Published: July 2020

The electromagnetic environment of UAV system was studied, and three key elements of electromagnetic interference(EMI) are analyzed. The research status of electromagnetic characteristics of UAV system at home and abroad was summarized from numerical simulation of EMI, experimental test of EMI and design of electromagnetic compatibility(EMC). The main contents include the research on electromagnetic characteristics of airborne antenna, EMI of data link and its mechanism, electromagnetic characteristics of internal cables, electromagnetic radiation test, electromagnetic conduction test, system-level EMC design, etc. The key technical challenges faced by the research on EMC of unmanned aerial vehicles at home and abroad are pointed out.
Functional roles of lipids in make-up products
Authors: de Clermont-Gallerande Hélène
Published: July 2020

Lipids are widely used in cosmetics regardless of intended application: skincare, make-up, toiletries. If they are found in all products, it is because they have many beneficial properties for the skin. A lipid is a nourishing ingredient, a penetration vector and an emollient agent all at the same time, hence, when a finished product contains lipids it allows its manufacturer to make various claims in terms of biological activity. In addition to their well-known efficacy that is often widely promoted in conferences and in scientific journals, lipids also have a structural and functional role in formulations. This is mainly what is used in makeup. Indeed, make-up products often highlight immediate performance such as brightness, matt effect, intensity of color, sumptuous consistency or length of time the make-up stays in place, but boast few results related to biological activity demonstrated in the long term such as anti-ageing, repair of the skin’s barrier, control of acne if we are talking about vitamin A ... Thus, the functional role of lipids being as great as their role of active ingredient, this publication aims to bring them out of the shadows and comprehensively set forth all the properties used in cosmetics. This article focuses on make-up products and on the lipids used in each of the textures. The reasons for which these lipids are present are detailed. The functions of each within different make-up preparations are reviewed. Particular attention is paid to the new raw materials – or the old ones that are coming back into fashion – in the current context of eco-design formulations. Thus, we do not elaborate greatly on mineral waxes, ozokerite wax, paraffins, and petroleum jellies, since these are not the raw materials of the future. Changes in consumption patterns are driving formulators to replace controversial ingredients with raw materials that do not engender bad press and that have a lesser impact on the environment. We present the development of the lipids used in make-up product formulations together with the impact of the same on product performance.
Männer in geschlossenen Venerologischen Stationen der DDR am
Beispiel von Berlin, Dresden und Erfurt
Authors: Schochow Maximilian , Steger Florian
Published: July 2020

Ziel In der DDR konnten auch Männer in geschlossene
Venerologische Stationen zwangseingewiesen werden. Während zum
Umgang mit Frauen in geschlossenen Venerologischen Stationen zahlreiche
Forschungsergebnisse vorliegen, ist über den Umgang mit
Männern in diesen Stationen kaum etwas bekannt.

Methoden Es wurden ungedruckte Quellen im Bundesarchiv und
Landesarchiv Berlin und in den Stadtarchiven von Erfurt und Zwickau
recherchiert und historisch-kritisch ausgewertet. Zudem wurden in
Datenbanken gedruckte Quellen recherchiert und ausgewertet.

Ergebnisse In der DDR wurden Männer in geschlossene
Venerologische Stationen zwangseingewiesen. Diese Stationen waren Teil von
geschlossenen Venerologischen Einrichtungen, zu denen jeweils auch eine
Station für Frauen gehörte. Die Männer wurden
getrennt von den Frauen untergebracht. Die Anzahl der Betten und
durchgeführten Zwangseinweisungen war in den Stationen für
Männer erheblich geringer als in Stationen für Frauen.
Gründe für Einweisungen von Männern waren zu
behandelnde Geschlechtskrankheiten, HwG-Verdacht und
Disziplinarmaßnahmen. Die medizinische Versorgung der Männer
entsprach dem zeitgenössischen medizinischen Standard.

Schlussfolgerung Die Anzahl der Betten und der Zwangseinweisungen war
auf den Stationen für Männer deutlich geringer als auf den
Stationen für Frauen. Die Männer wurden überwiegend
zwangseingewiesen, weil sie eine Geschlechtskrankheit hatten oder als
HwG-Person galten, während mehr als 50 % der Frauen wegen
Herumtreiberei eingewiesen wurden. Darüber hinaus galten
Männer als zuverlässige Patienten in der medizinischen
Versorgung, während Frauen als säumig und
unzuverlässig angesehen wurden. In dieser Hinsicht unterscheidet
sich die Situation der Männer grundlegend von der der Frauen.
Kann ein nationales Gesundheitsportal die Primärversorgung
unterstützen? – Ergebnisse einer Befragungsstudie unter
Hausärzten
Authors: Wangler Julian , Stachwitz Philipp , Jansky Michael
Published: July 2020

Hintergrund Das Bundesministerium für Gesundheit (BMG) plant
die Einrichtung eines unabhängigen nationalen Gesundheitsportals,
das evidenzbasierte Gesundheitsinformationen zur Verfügung stellen
soll. Eine wünschenswerte Eigenschaft soll darin bestehen,
Ärzte bei ihrer informierenden und beratenden Tätigkeit zu
unterstützen. Gerade Hausärzte, die mit einer großen
Bandbreite an Symptomen, Erkrankungen und Patienten zu tun haben,
könnten hiervon profitieren. In Kooperation mit dem health
innovation hub (hih) des BMG wurde ein Forschungsprojekt initiiert, bei dem
hausärztliche Positionen, Bedürfnisse und Anforderungen mit
Blick auf ein nationales Gesundheitsportal ermittelt wurden.

Methoden Auf Basis einer qualitativen Vorstudie wurden Anfang 2020
insgesamt 745 Hausärzte in Rheinland-Pfalz und im Saarland
schriftlich befragt. Neben der deskriptiven Analyse kam zur Feststellung von
signifikanten Unterschieden zwischen 2 Gruppen ein T-Test bei
unabhängigen Stichproben zum Einsatz.

Ergebnisse Hausärzte artikulieren einen Bedarf nach einem
nationalen Gesundheitsportal. 54% stehen diesem positiv
gegenüber; 49% sehen große
Unterstützungspotenziale. Angeführt wird v. a. eine
Entlastung bei ärztlicher Beratung (68%), eine Optimierung
der Arzt-Patient-Kommunikation (56%), eine Stabilisierung von
ängstlichen Patienten (42%) und eine bessere
‚Schulung‘ im Umgang mit dem Gesundheitssystem
(41%). Zudem sollen Versorgungssettings längerfristig
stabilisiert werden (38%). Wichtig ist den Befragten ein
Präventionsschwerpunkt (91%) und eine symptomorientierte
Darstellung (62%). Für einen Teil ist vorstellbar,
über eine solche Plattform Informationen für ihre Patienten
zusammenzustellen (45%) und den Austausch mit Fachkollegen zu suchen
(44%).

Schlussfolgerung Allgemeinärzte sehen in der Schaffung eines
nationalen Gesundheitsportals klare Chancen für eine bessere
Information und Beratung von Patienten. Dabei sollte das Portal so
ausgestaltet werden, dass zum einen leitlinienkonforme,
verständliche Informationen symptomorientiert vermittelt werden, zum
anderen das Arzt-Patient-Verhältnis unterstützt und die
Orientierung im Gesundheitswesen verbessert wird. Offene Fragen bleiben,
z. B. mit Blick auf die Sicherstellung einer ausreichenden
Auffindbarkeit des Portals.
Ligand-Free Nickel-Catalyzed Reductive Allylic Defluorinative Cross-Coupling of α-Trifluoromethyl Alkenes with Epoxides
Authors: Wang Chuan , Lin Zhiyang , Lan Yun
Published: July 2020

We report a reductive allylic defluorinative reaction of α-trifluoromethyl alkenes with terminal epoxides, which consists of an iodide-mediated regioselective ring opening and a nickel-catalyzed radical-type cross-coupling, providing diverse tertiary gem-difluorobishomoallylic alcohols in moderate to high yields. Notably, this reaction is conducted under mild conditions and requires no external ligand or proton donor.
Remote Deprotometalation-Iodolysis of N,N-Diisopropyl-2-trimethylsilylferrocenecarboxamide: A New Route Toward 1,1′-Disubstituted Ferrocenes
Authors: Erb William , Krishna Palakodety Radha , Kadari Lingaswamy , Roisnel Thierry , Mongin Florence
Published: July 2020

The 1,1′-disubstitution is currently the most frequent substitution pattern encountered in the ferrocene series. Here an original access based on the remote deprotometalation of N,N-diisopropyl-2-trimethylsilylferrocenecarboxamide is reported. The key intermediate, 1′-iodo-N,N-diisopropylferrocenecarboxamide, was prepared in multiple grams and was further functionalized toward fifteen 1′-substituted iodoferrocenes.
Facial Nerve Adherence in Vestibular Schwannomas: Classification and Radiological Predictors
Authors: Jung Gustavo Simiano , Montibeller Guilherme Ramina , Fraga Gabriel Schier de , Rohde Thais dos Santos , Ramina Ricardo
Published: July 2020

Background Facial nerve palsy is one of the most frequent complications after resection of vestibular schwannomas (VS). Several mechanisms have been implicated in the poor postoperative facial nerve outcome. Adherence between the facial nerve and tumor capsule is one of the most relevant factors. There is no clear preoperative parameter permitting identification of these adhesions.

Objective The aim of this study was to identify the correlation between the grade of adherence of the facial nerve to the tumor capsule and its functional outcome after VS resection.

Methods A total of 26 patients with sporadic VS (tumor sized T3, T4A, and T4B according to Hannover classification) were evaluated. Grade of adherence of the facial nerve to the tumor capsule was checked during surgery and graduated according to a proposed scale into 1 to 3 different grades. Facial nerve function was assessed postoperatively and after 1-year follow-up. Size of tumor according to Hannover classification, presence of cystic components, “cerebrospinal fluid (CSF) cleft sign,” and the contour of tumor capsule were tested as radiological predictors of grade of adherence to the facial nerve.

Results and Conclusion Only Grade 2 (11 cases) and 3 (15 cases) of adherence were seen in large VS. Lower grade of adherence was associated with good facial nerve outcome after 1-year follow-up (p = 0.029). Presence of the “CSF cleft sign” and regular contour of tumor capsule were independent predictors of adherence. When both factors were associated, sensitivity and specificity of this method were 83 and 80%, respectively.
Theoretical study on temporal and spatial performance of magnetic solenoid used in dilation x-ray imager
Authors: Wang Qiangqiang , Cao Zhurong , Chen Tao , Deng Keli , Deng Bo
Published: July 2020

In the Dilation X-ray Imager (DIXI), which is characterized by an ultra-short gating time, a magnetic solenoid is used to keep the photoelectrons from defocusing during the drift process. The performance of the magnetic solenoid has an important influence on the performance of the DIXI. We present in this paper the efforts on studying the spatial and temporal performance of the magnetic solenoid used in the DIXI by tracking the photoelectrons with the particle-in-cell method. The initial parameters of the photoelectrons of the Au cathode were sampled with a Monte Carlo code. A novel magnetic solenoid with a shielding shell made of soft iron was proposed. We compared the performance of this solenoid with a normal solenoid. The simulation results of magnetic field distribution, spatial resolution, transit time spread, and temporal distortion were presented in detail to demonstrate that the performance of the DIXI can be significantly improved by using the magnetic solenoid with the proposed iron shell.
The smallest eigenvalue of large Hankel matrices generated by a singularly perturbed Laguerre weight
Authors: Zhu Mengkun , Chen Yang , Li Chuanzhong
Published: July 2020

An asymptotic expression of the orthonormal polynomials PN(z) as N → ∞, associated with the singularly perturbed Laguerre weight wα(x;t)=xαe−x−tx,x∈[0,∞),α>−1,t≥0, is derived. Based on this, we establish the asymptotic behavior of the smallest eigenvalue, λN, of the Hankel matrix generated by the weight wα(x; t).
Three-dimensional visualization of Sb segregation in InAs/InAsSb superlattices using atom probe tomography
Authors: Kotulak Nicole A. , Nolde Jill A. , Katz Michael B. , Twigg Mark E. , Knipling Keith E. , Lubyshev Dmitri , Fastenau Joel M. , Liu Amy W. K. , Aifer Edward H.
Published: July 2020

The Sb concentration profile in an nBn photodetector containing an InAs/InAsSb type-II superlattice is collected and analyzed using atom probe tomography. A 3D reconstruction comprises the full composition of 31 periods. The Sb concentration profile is evaluated for the entire 31 period stack, as well as each individual period using segregation models from Muraki and Wood. Trends in the asymmetric Sb profile show a consistent non-negligible Sb concentration in the InAs layers and a lower Sb concentration in the InAsSb with respect to the target concentration.
Analytical study of an effect of gas compressibility on a burning accident in an obstructed passage
Authors: Kodakoglu Furkan , Akkerman V’yacheslav
Published: July 2020

The incompressible analytical formulation describing a burning accident in an obstructed passage [F. Kodakoglu et al., “Towards descriptive scenario of a burning accident in an obstructed mining passage: An analytical approach,” in 27th International Colloquium on the Dynamics of Explosions and Reactive Systems (ICDERS), Beijing, China, July 28–Aug 2, 2019, Paper 369] is extended to account for gas compression, which cannot be ignored as soon as the flame velocity starts approaching the speed of sound. The analysis combines the theories of globally spherical, self-accelerating premixed expanding flames with that of ultrafast flame acceleration in obstructed conduits. It is shown that while the entire acceleration scenario may promote the flame velocity up to near-sonic values, the effect of gas compressibility moderates flame acceleration, and such an impact depends strongly on various thermal-chemical properties of the combustible premixture. Starting with gaseous combustion, the formulation is subsequently widened to the gaseous-dusty environments with combustible (coal) and inert (sand) dusts, and their combinations. In particular, it is quantified how the flame evolution and its locus and velocity depend on the type and size of the dust particles.
Supersymmetric generalized power functions
Authors: Ouellet Mathieu , Tremblay Sébastien
Published: July 2020

Complex-valued functions defined on a finite interval [a, b] generalizing power functions of the type (x−x0)n for n ≥ 0 are studied. These functions called Φ-generalized powers, Φ being a given nonzero complex-valued function on the interval, were considered to construct a general solution representation of the Sturm–Liouville equation in terms of the spectral parameter [V. V. Kravchenko and R. M. Porter, Math. Methods Appl. Sci. 33(4), 459–468 (2010)]. The Φ-generalized powers can be considered as natural basis functions for the one-dimensional supersymmetric quantum mechanics systems taking Φ=ψ02, where the function ψ0(x) is the ground state wave function of one of the supersymmetric scalar Hamiltonians. Several properties are obtained such as Φ-symmetric conjugate and antisymmetry of the Φ-generalized powers, a supersymmetric binomial identity for these functions, a supersymmetric Pythagorean elliptic (hyperbolic) identity involving four Φ-trigonometric (Φ-hyperbolic) functions, as well as a supersymmetric Taylor series expressed in terms of the Φ-derivatives. We show that the first n Φ-generalized powers are a fundamental set of solutions associated with nonconstant coefficient homogeneous linear ordinary differential equations of order n + 1. Finally, we present a general solution representation of the stationary Schrödinger equation in terms of geometric series where the Volterra compositions of the first type are considered.
Modeling how defects affect conductivity of capacitor materials
Authors: Patrick Chris
Published: July 2020

A computational framework reveals how the formation of space charge regions controls the conductivity of polycrystalline materials and resultant properties in electronic devices.
3D-printed mini trees help with wind load response predictions
Authors: Bandari Anashe
Published: July 2020

When it comes to the robustness of urban vegetation to wind, poor risk assessment can lead to detrimental tree failures.
The nature of the frequency spectrum of shear Alfvén waves in a solar coronal arcade
Authors: Jain Rekha
Published: July 2020

Frequency power spectra are computed theoretically for shear Alfvén waves excited in a solar coronal arcade by two separate perturbations, a cosine-modulated Gaussian perturbation and an impulsive driver. The arcade is assumed to consist of potential magnetic field lines embedded in a stratified plasma. It is shown that although the power spectra have discrete frequencies for each field line, a cumulative effect of many field lines of different widths/lengths in an arcade will be that of a continuous spectrum, if seen together as one entity. The nature of the frequency power spectra can constrain the size and the type of driver.
The fabrication of Schottky photodiode by monolayer graphene direct-transfer-on-silicon
Authors: Wang Yiming , Yang Shuming , Ballesio Alberto , Parmeggiani Matteo , Verna Alessio , Cocuzza Matteo , Pirri Candido Fabrizio , Marasso Simone Luigi
Published: July 2020

A two-step hot embossing process was used to transfer graphene and to fabricate Gr/Si Schottky photodiodes. As a direct graphene transfer technique through a hot embossing system, chemical vapor deposition Gr monolayer was transferred from copper foil to cyclic olefin copolymer foil without a poly(methylmethacrylate) sacrificial layer. Then, hot embossing was employed once again to bond graphene with the prepared Si substrate to form Schottky contact. Electrical and photoelectrical characterizations have been performed to evaluate the Schottky photodiode. The photocurrent increases linearly with light intensity under 633 nm illumination. With an appropriate bias voltage, the maximum responsivity reaches 0.73 A/W. Extracted from I–V characteristics by Cheung's function, the Schottky barrier height and ideality factor are 1.01 eV and 2.66, respectively. The experimental result shows the feasibility and effectiveness of this hot embossing fabrication process, which demonstrates the opportunity for large scale production and provides a new approach for graphene optoelectronics.
Enhancing NEMD with automatic shear rate sampling to model viscosity and correction of systematic errors in modeling density: Application to linear and light branched alkanes
Authors: Santak Pavao , Conduit Gareth
Published: July 2020

We perform molecular dynamics simulations to model density as a function of temperature for 74 alkanes with 5–10 carbon atoms and non-equilibrium molecular dynamics simulations in the NVT ensemble to model the kinematic viscosity of 10 linear alkanes as a function of molecular weight, pressure, and temperature. To model density, we perform simulations in the NPT ensemble before applying correction factors to exploit the systematic error in the SciPCFF force field and compare the results to experimental values, obtaining an average absolute deviation of 3.4 gl at 25 °C and of 7.2 gl at 100 °C. We develop a sampling algorithm that automatically selects good shear rates at which to perform viscosity simulations in the NVT ensemble and use the Carreau model with weighted least squares regression to extrapolate Newtonian viscosity. Viscosity simulations are performed at experimental densities and show an excellent agreement with experimental viscosities, with an average percent deviation of −1% and an average absolute percent deviation of 5%. Future plans to study and apply the sampling algorithm are outlined.
Analysis and experimental demonstration of underwater frequency transfer with diode green laser
Authors: Hou Dong , Chen Jiyuan , Guo Guangkun
Published: July 2020

We demonstrated an underwater frequency transfer technique with a green diode laser. The characteristic of the timing fluctuation and instability for the transfer technique was analyzed and simulated. With this technique, we had transferred a highly stable 100-MHz frequency signal over an underwater link with distances of 3 m, 6 m, and 9 m for 5000 s, respectively. The experimental results involving the underwater transfer of the 100-MHz radio-frequency signal shows that the rms timing fluctuations are 5.9 ps (3-m link), 6.4 ps (6-m link), and 8.4 ps (9-m link). The calculations also show that the relative Allan deviations for the 3-m, 6-m, and 9-m transmission links are 5.6 × 10−13 at 1 s and 5.3 × 10−15 at 1000 s, 5.8 × 10−13 at 1 s and 1.1 × 10−14 at 1000, and 6.8 × 10−13 at 1 s and 1.1 × 10−14 at 1000 s, respectively. The measured instabilities were lower than Rb and Cs atomic clocks, implying that the proposed frequency transfer scheme can potentially be used to transfer the signals of these atomic clocks over underwater links.
Reducibility of Schrödinger equation on a Zoll manifold with unbounded potential
Authors: Feola Roberto , Grébert Benoît , Nguyen Trung
Published: July 2020

In this article, we prove a reducibility result for the linear Schrödinger equation on a Zoll manifold with quasi-periodic in time pseudo-differential perturbation of order less than or equal to 1/2. As far as we know, this is the first reducibility result for an unbounded perturbation on a compact manifold different from the torus.
Core electrons and specific heat capacity in the fast electron heating of solids
Authors: Robinson A. P. L. , Pasley J.
Published: July 2020

The accuracy with which the Thomas–Fermi (TF) model can provide electronic specific heat capacities for use in calculations relevant to fast electron transport in laser-irradiated solids is examined. It is argued that the TF model, since it neglects the quantum shell structure, is likely to be significantly inaccurate for low- and intermediate-Z materials. This argument is supported by examining the results of calculations using more sophisticated methods that account for degeneracy, the quantum shell structure, and other non-ideal corrections. It is further shown that the specific heat capacity curve generated by this more advanced treatment leads to substantial (factor of two) changes in fast electron transport simulations relative to similar modeling based upon the TF model.
On the large D expansion of Hermitian multi-matrix models
Authors: Carrozza Sylvain , Ferrari Frank , Tanasa Adrian , Valette Guillaume
Published: July 2020

We investigate the existence and properties of a double asymptotic expansion in 1/N2 and 1/D in U(N) × O(D) invariant Hermitian multi-matrix models, where the N × N matrices transform in the vector representation of O(D). The crucial point is to prove the existence of an upper bound η(h) on the maximum power D1+η(h) of D that can appear for the contribution at a given order N2−2h in the large N expansion. We conjecture that η(h) = h in a large class of models. In the case of traceless Hermitian matrices with the quartic tetrahedral interaction, we are able to prove that η(h) ≤ 2h; the sharper bound η(h) = h is proven for a complex bipartite version of the model, with no need to impose a tracelessness condition. We also prove that η(h) = h for the Hermitian model with the sextic wheel interaction, again with no need to impose a tracelessness condition.
Modeling the dielectric strength variation of supercritical fluids driven by cluster formation near critical point
Authors: Haque Farhina , Wei Jia , Graber Lukas , Park Chanyeop
Published: July 2020

Density fluctuation driven by cluster formation causes drastic changes in the dielectric breakdown characteristics of supercritical fluids that cannot be described solely based on the conventional Townsend’s gas discharge theory and Paschen’s law. In this study, we model the dielectric breakdown characteristics of supercritical CO2 as a function of pressure based on the electron scattering cross section data of CO2 clusters that vary in size as a function of temperature and pressure around the critical point. The electron scattering cross section data of CO2 clusters are derived from those of gaseous CO2. We solve the Boltzmann equation based on the electron scattering cross section data to obtain critical electrical fields of various cluster sizes as a function of pressure. To validate our model, we compare the modeled breakdown voltage with the experimental breakdown measurements of supercritical CO2, which show close agreement.