bluuebunny/crossref_metadata_2025 huggingface dataset:
Die Biologie der kieferorthopädischen Zahnbewegung – Möglichkeiten und Grenzen der Beschleunigung
Authors: Maltha Jaap C.
Published: September 2020

Auf einen kurzen Überblick über die histologischen Veränderungen im Desmodont und dem Alveolarknochen während der unterschiedlichen Phasen einer kieferorthopädischen Bewegung von Zähnen folgt eine Zusammenfassung von zellbiologischen Aspekten der Interaktionen zwischen Zellen, wie Fibroblasten, Osteoblasten, Osteozyten und Osteoklasten, und der extrazellulären Matrix bei der Zahnbewegung.

Eine immer deutlicher werdende Forderung nach einer Beschleunigung der Zahnbewegung und damit einer Verkürzung der Dauer einer kieferorthopädischen Behandlung hat zur Entwicklung einer ganzen Reihe unterschiedlicher Interventionen geführt. Zwei der Hauptkategorien werden im vorliegenden Beitrag diskutiert. Einerseits die Veränderung der physikalischen Bedingungen und andererseits die Applikation von Agentien, mit denen die zellbiologischen Prozesse des Knochenumbaus stimuliert werden können.
Behandlung mit Okklusionsschienen und deren Herstellung im digitalen
Workflow
Authors: Schupp Werner , Haubrich Julia , Funke Julia
Published: September 2020

Okklusionsschienen sind definiert als intraorale Geräte zur
Änderung der okklusalen Relation zwischen oberem und unterem
Zahnbogen. Die Hauptindikation der Okklusionsschiene besteht in der
Behandlung einer kraniomandibulären Dysfunktion (CMD) sowie zum
Schutz von Zahnschmelz und Zahnhalteapparat. Aufgrund der beabsichtigten
Änderung der Unterkieferpositionierung und der Neupositionierung der
Kondylen bezeichnen wir die Okklusionsschiene als kraniomandibuläre
orthopädische Positionierungsapparatur (COPA). Okklusionsschienen
bestehen aus hartem Kunststoff. Nahezu immer verwenden wir eine COPA im
Unterkiefer. Die Herstellung erfolgt im digitalen Workflow.
Begehren und Konsens
Authors: Dannecker Martin
Published: September 2020

Vorgelegt wird der Versuch einer dichten Beschreibung dessen, was als sexuelle Grenzüberschreitung bzw. sexuelle Belästigung bezeichnet wird. Rekurriert wird dabei auch auf die derartigen Handlungen inhärenten Botschaften und Absichten. Das phänomenologische Material für diesen Versuch ist dem Artikel der Associated Press vom 13. August 2019 entnommen, in dem der Sänger Plácido Domingo von mehreren Frauen, die mit ihm beruflich zu tun hatten, der fortgesetzten sexuellen Belästigung beschuldigt wird. Zeigen lässt sich an diesem Material, dass mit charismatischer Macht häufig ein sexueller Verblendungszusammenhang einhergeht: Gegenüber den Trägern von Charisma scheint in beruflichen Zusammenhängen ein Nein sehr viel schwerer möglich zu sein als in anderen Beziehungskonstellationen. Und die Träger von Charisma neigen offenbar besonders leicht dazu, die Sprache der Macht mit der Sprache der Sexualität zu verwechseln.
Arzneimittelprüfungen und deren Weg zur Wiedererkennung an Patienten
Authors: Hildebrandt Jörg
Published: September 2020

Der Aufwand einer homöopathischen Arzneimittelprüfung ist hoch, aber lohnend: Man kennt die Arznei durch häufigere Beschäftigung besser, erinnert sich vielleicht an ein besonders eindrückliches Arzneisymptom, das man selbst gespürt hat. In meiner Praxis macht sich der Aufwand mehrfach bezahlt, da ich die Arzneien oft anwenden kann und mitunter gerade bei einigen schwierigeren Verläufen gute Erfolge habe. Dieser Artikel stellt die Mittel Toxopneustes pileolus, Dolomit und Aqua St. Leonhard vor.
Nephrologie – 30-Minuten-Urintest: Harnsteine schnell erkennen
Authors: Freye Carolin
Published: September 2020

Li H et al. SLIPS-LAB – A bioinspired bioanalysis system for metabolic evaluation of urinary stone disease. Science Advances 2020;6(21): eaba8535

US-Forscher haben einen Urintest für Harnsteine entwickelt, der nur eine halbe Stunde dauert. Bisher muss der Urin eines Patienten mit Harnsteinen über 24 Stunden gesammelt und in einem Diagnostiklabor analysiert werden, was mehrere Tage dauern kann.
G-DRG-System – Zwei Drittel der Universitätsklinika im Minus
Authors: Lerch Markus M.
Published: September 2020

Lerch MM et al. Die Grenzen des G-DRG-Systems bei der Abbildung von Komplexität in der Universitätsmedizin. Zeitschrift für Gastroenterologie 2020; 58: 747–753

Von den 1900 im DRG-System arbeitenden, nicht universitären Krankenhäusern weist jedes Jahr knapp ein Drittel ein negatives Betriebsergebnis aus, bei den Universitätsklinika sind es zwei Drittel mit einem kumulativen Defizit von 300 Mio. Euro. Eine Analyse von 7 Mio. Kostendaten (§-21-KHEntgG-Datensatz) aus 10 Universitätsklinika und 64 nicht universitären Häusern zeigt, dass Universitätsklinika standardisierbare Leistungen mindestens so effizient und kostenbewusst erbringen wie andere Häuser, sich die höhere Komplexität und Krankheitsschwere von Patienten in der Universitätsmedizin im gegenwärtigen G-DRG-System aber nicht abbilden lässt – auch nicht im Vergleich zu anderen Maximalversorgern. Zum Teil darf sie im heutigen Regelwerk gar nicht abgebildet werden.
Gastrointestinale Endoskopie in Zeiten der COVID-19-Pandemie: Umsetzung von Empfehlungen und Erwartungen für die Zukunft
Authors: Damm Marko , Garbe Jakob , Eisenmann Stephan , Heidemann Clara , Krug Sebastian , Walter Steffen , Lammert Frank , Michl Patrick , Rosendahl Jonas
Published: September 2020

Einleitung Die COVID-19-Pandemie stellt die Gesundheitssysteme weltweit vor eine große Herausforderung. Aktuelle Daten deuten auf ein erhöhtes Risiko für eine SARS-CoV-2-Infektion für das Endoskopiepersonal hin. Für gastrointestinale Endoskopieeinheiten wurden mehrere Empfehlungen für die aktuelle Situation formuliert, jedoch liegen bislang keine Daten zur momentanen Versorgungsrealität vor.

Material und Methodik Vom 1. bis 7. April 2020 erfolgte eine deutschlandweite, webbasierte Umfrage unter den Mitgliedern der DGVS. Insgesamt wurden 33 Fragen gestellt, die auf Empfehlungen der ESGE (European Society of Gastrointestinal Endoscopy) basierten. Die Umfrage war an die Leiter von Endoskopieeinheiten gerichtet.

Ergebnisse Von 551 teilnehmenden Endoskopieeinheiten stornierten 37 % (202) weniger als 40 % ihrer Eingriffe. Kleinere Abteilungen (< 4000 Untersuchungen/Jahr) sagten einen signifikant geringeren Anteil ihrer Untersuchungen ab als größere (> 4000). Eine vollständige räumliche Trennung von Hochrisikopatienten war nur in 17 % der Fälle möglich. Prozedurale Maßnahmen wie strukturierte Risikostratifikation (91 %) oder Verwendung persönlicher Schutzausrüstung (PSA, 85 %) wurden meist umgesetzt. Für die Zukunft wurden Engpässe bei PSA (83 %) und Personal (69 %) sowie relevante finanzielle Verluste (80 %) erwartet.

Schlussfolgerungen Die Empfehlungen zu den strukturellen Maßnahmen waren nur eingeschränkt umsetzbar, und der Umfang von Stornierungen war heterogen. Eindeutige Definitionen notwendiger Endoskopien in der Pandemiesituation und eine Anpassung struktureller Gegebenheiten sowie eine finanzielle Absicherung erscheinen notwendig.
Ökonomie vor Behandlungsqualität – EBM-Reform gefährdet die Erfolgsgeschichte Darmkrebsvorsorge
Authors:   Berufsverbands Gastroenterologie Deutschland e. V. (BVGD)
Published: September 2020

Auf Beschluss der Kassenärztlichen Bundesvereinigung (KBV) sank die Vergütung, die Ärzte für die Durchführung einer Vorsorgekoloskopie erhalten, um neun Prozent, gleichzeitig wurde die vorgesehene Behandlungszeit deutlich verkürzt – von 32 Minuten auf nur noch 18 Minuten. Diese ökonomiegetriebene Entscheidung bedroht die Qualität der Untersuchung und untergräbt Bemühungen um die Ausweitung der Darmkrebsvorsorge auf weitere Teile der Gesellschaft, warnt der Berufsverband Gastroenterologie Deutschland e. V. (BVGD).
Delayed Reconstruction with Full-Thickness Skin Grafts Following Defect Size Reduction in Head and Neck Nonmelanoma Skin Cancer
Authors: Sezgin Baha , Kaya Isa , Turhal Goksel , Apaydin Fazil
Published: September 2020

Different treatment modalities have been applied for nonmelanoma skin cancers (NMSCs) of the head and neck area. One of the most important points after surgical treatment is the selection of appropriate reconstruction methods. The aim of this study is to investigate the efficacy and feasibility of the use of both defect size reduction with sutures and secondary healing with delayed reconstruction with full-thickness skin grafts in NMSC patients. In total, 18 (42.8%) male and 24 (57.2%) female patients with NMSC were operated. Defect size was measured both after excision and just before repair, and the approximate defect area was calculated with ImageJ software. Reconstruction was performed after 14 days in all patients in the second session, using free skin grafts. There were 18 (42.8%) male and 24 (57.2%) female patients. The mean age was 70.5 (45–82) years. The mean follow-up period was 40.3 (16–68) months. The mean defect area measured after excision was 8.44 ± 1.91 cm2. After 14 days of delay, the mean defect area was 5.51 ± 1.28 cm2 (34.8% reduction) (p < 0.05). Defect-reduction methods applied during the first session, together with proper interval prior to placement of graft, have been shown to be beneficial and acceptable methods, providing an advantage in reconstruction with free skin graft.
Current Insights into the Novel Coronavirus Disease 2019 (COVID-19) and Its Homoeopathic Management
Authors: Dey Sanjay Kumar , Dey Joy Kumar , Sihag Hitaishi
Published: September 2020

Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is a new coronavirus strain that has not been ever found in humans before December 2019. Both the coronavirus disease 2019 (COVID-19) case fatality rate and deaths per million population in the top 10 affected countries are increasing a lot due to ever-increasing number of new cases among countries facilitated by increased affinity of SARS-CoV-2 to bind human angiotensin-converting enzyme 2 (ACE2) receptors. While human-to-human transmission of SARS-CoV-2 happens through close contact with an infected individual who spreads respiratory droplets through air or other means, its diagnosis relies mainly on detection of nucleic acid. Repurposing drugs such as dexamethasone, remdesivir, favipiravir and TMPRSS2 (trans membrane protease, serine 2) protease inhibitors have been shown to be effective for the treatment of COVID-19 with albeit requirement of further studies to conclude their complete effectiveness. Personal protective measures should be followed to prevent SARS-CoV-2 infection. Additionally, hundreds of clinical trials of vaccines against SARS-CoV-2 are undergoing, while plasma therapy from the COVID-19 survivors is also being tried to treat the severely affected patients. In addition to these aforementioned modern medicines and therapeutic approaches, homoeopathy also holds promising anti-viral effect as evident from its success against flu and other epidemics, historically. Therefore, present article provides a glimpse of advancements made in the area of homoeopathic ways of treating COVID-19 by summarising the recent homoeopathic clinical, research trials and future scopes of homoeopathy to combat the pandemic. After critical review of most of the ongoing or recently completed homoeopathic treatment efforts against SARS-CoV-2, it was identified that Bryonia alba, Arsenicum album and Gelsemium sempervirens are working best among homoeopathic medicines till now. These studies are also suggesting an increased application of these remedies to treat the current pandemic worldwide; therefore, more such studies are warranted. Those further research will pave the way to understand the mechanism of each of these homoeopathic drugs to cure COVID-19 facilitated by optimising their doses, effects and find the best among these multiple options in homoeopathic medicines for plausible mono- or combination therapies.
A Brief Account of Homoeopathic Approach to Fight COVID-19 Disaster
Authors: Rath Padmalaya , Jana Shib Narayan
Published: September 2020

Disasters are unfortunate but integral part of civilisation. While the incidence of disaster cannot be prevented altogether, the effects can be modified to the extent that there will be minimum or no loss of life, minimum loss to property and quick restoration to normalcy. Virtually in many instances effects can be reduced to nil or negligible if sufficient diligence is practiced. Epidemic diseases are regarded as disasters too. Homoeopathy is a medical system of therapeutics which claims to have effective intervention in epidemics. Any system of medicine that offers to intervene in any epidemic should be embraced. Epidemics have occurred in the past not only in India but in other countries as well, such as Cholera, Asian flu, Spanish flu, severe acute respiratory syndrome and Avian influenza. When an epidemic spreads in wider geographical area and affects large number of people, it is termed as pandemic. Coronavirus disease 2019 (COVID-19) is a pandemic that began in December 2019.

Homoeopathic system of medicine claims to have effective treatment in epidemics. But hardly any effort seems to have been made to correlate the limited documented studies on epidemics that may consolidate the positive results of homoeopathy in such a way that can help policy makers to give a serious thought to the fact that homoeopathy can be trusted to combat epidemic diseases. This article involves data collection using existing published articles on case series/individual cases in peer-reviewed journals assessing the applicability of homoeopathy in epidemics/pandemics and in COVID-19. With such a background finding suitable solutions is a necessary step toward prevention and treatment of epidemic diseases.
The TRIXS end-station for femtosecond time-resolved resonant inelastic x-ray scattering experiments at the soft x-ray free-electron laser FLASH
Authors: Dziarzhytski S. , Biednov M. , Dicke B. , Wang A. , Miedema P. S. , Engel R. Y. , Schunck J. O. , Redlin H. , Weigelt H. , Siewert F. , Behrens C. , Sinha M. , Schulte A. , Grimm-Lebsanft B. , Chiuzbăian S. G. , Wurth W. , Beye M. , Rübhausen M. , Brenner G.
Published: September 2020

We present the experimental end-station TRIXS dedicated to time-resolved soft x-ray resonant inelastic x-ray scattering (RIXS) experiments on solid samples at the free-electron laser FLASH. Using monochromatized ultrashort femtosecond XUV/soft x-ray photon pulses in combination with a synchronized optical laser in a pump-probe scheme, the TRIXS setup allows measuring sub-picosecond time-resolved high-resolution RIXS spectra in the energy range from 35 eV to 210 eV, thus spanning the M-edge (M1 and M2,3) absorption resonances of 3d transition metals and N4,5-edges of rare earth elements. A Kirkpatrick–Baez refocusing mirror system at the first branch of the plane grating monochromator beamline (PG1) provides a focus of (6 × 6) μm2 (FWHM) at the sample. The RIXS spectrometer reaches an energy resolution of 35–160 meV over the entire spectral range. The optical laser system based on a chirped pulse optical parametric amplifier provides approximately 100 fs (FWHM) long photon pulses at the fundamental wavelength of 800 nm and a fluence of 120 mJ/cm2 at a sample for optical pump-XUV probe measurements. Furthermore, optical frequency conversion enables experiments at 400 nm or 267 nm with a fluence of 80 and 30 mJ/cm2, respectively. Some of the first (pump-probe) RIXS spectra measured with this setup are shown. The measured time resolution for time-resolved RIXS measurements has been characterized as 287 fs (FWHM) for the used energy resolution.
Hopping and emergent dynamics of optical localized states in a trapping potential
Authors: Garbin B. , Javaloyes J. , Tissoni G. , Barland S.
Published: September 2020

The position and motion of localized states of light in propagative geometries can be controlled via an adequate parameter modulation. Here, we show theoretically and experimentally that this process can be accurately described as the phase locking of oscillators to an external forcing and that non-reciprocal interactions between light bits can drastically modify this picture. Interactions lead to the convective motion of defects and to an unlocking as a collective emerging phenomenon.
Design and performance of an improved thermo-optometric equipment for the measurement of the solidus and liquidus at high temperatures
Authors: Balakrishnan S. , Ananthasivan K. , Ambika N. , Hari Kumar K. C.
Published: September 2020

Experimental determination of solidus and liquidus in reactive systems at very high-temperatures requires special equipment and is rather complex. In the present study, we describe setting up an experimental facility based on the “spot-technique.” It was demonstrated that this setup could be used to measure phase transformation temperatures involving liquids in refractory systems that comprise reactive and radioactive components, in the range of 1273 K–2273 K, by using a thermo-optometric technique, namely, the “spot-technique.” The equipment and the method were validated by measuring the melting points of high purity metals, namely, gold, copper, nickel, and zirconium. A measurement accuracy of ±2 K could be realized at temperatures as high as 2128 K. The solidus and liquidus temperatures of nuclear reactor fuels as well as some binary alloys were also measured by using this setup. The research involved in building this equipment and the key features of the equipment and method are described in detail.
Spectral gaps of 1-D Robin Schrödinger operators with single-well potentials
Authors: Ashbaugh Mark S. , Kielty Derek
Published: September 2020

We prove sharp lower bounds on the spectral gap of 1-dimensional Schrödinger operators with Robin boundary conditions for each value of the Robin parameter. In particular, our lower bounds apply to single-well potentials with a centered transition point. This result extends the work of Cheng et al. [Comput. Math. Appl. 60(9), 2556–2563 (2010)] and Horváth [Proc. Am. Math. Soc. 131(4), 1215–1224 (2002)] in the Neumann and Dirichlet endpoint cases to the interpolating regime. We also build on the recent work by Andrews, Clutterbuck, and Hauer (arXiv:2002.06900) in the case of convex and symmetric single-well potentials. In particular, we show that the spectral gap is an increasing function of the Robin parameter for symmetric potentials.
The electric and magnetic properties of novel two-dimensional MnBr2 and MnI2 from first-principles calculations
Authors: Luo Jia , Xiang Gang , Tang Yongliang , Ou Kai , Chen Xianmei
Published: September 2020

The structural, electronic, and magnetic properties of two-dimensional (2D) manganese dibromide (MnBr2) and manganese diiodide (MnI2) are investigated using first principles calculations. The dynamical and thermal stabilities of 2D MnBr2 and MnI2 have been illustrated from the phonon dispersion and molecular dynamic calculations. From the phonon dispersion, three Raman-active and three infrared-active vibration modes are found. The calculated formation energies and cleavage energies indicate that 2D MnBr2 and MnI2 are energetically stable and could be potentially obtained by exfoliation. The hybrid functional theory is employed to discover that 2D MnBr2 and MnI2 are wide gap semiconductors. The magnetic frustration is revealed by the calculation of magnetic exchange interaction and magnetocrystalline anisotropy interaction. By analyzing different magnetic orders, the relatively weak magnetic exchange is attributed to the competition of the direct exchange and the superexchange interaction.
Analysis of the accuracy of actuation electronics for the laser interferometer space antenna
Authors: Meshksar N. , Ferraioli L. , Mance D. , ten Pierick J. , Giardini D.
Published: September 2020

Electrostatic actuation of a free-floating test-mass was tested in the Laser Interferometer Space Antenna (LISA) Pathfinder mission, and it will be integrated into the LISA. We have investigated the LISA Pathfinder actuation accuracy with respect to the precision of fractional digits in the field programmable gate array (FPGA) code of actuation electronics. The LISA Pathfinder data showed that the rounding errors in the FPGA code result in an erroneous force that contaminated the main mission observable, and this error was compensated in the post-processing of the LISA Pathfinder data. To avoid a similar issue for the LISA, the LISA actuation accuracy can be improved by increasing the number of fractional digits in the FPGA code. However, this is restricted by some hardware limitations. In this paper, we investigate the necessary enlargement of the FPGA to fulfill the LISA acceleration requirements and propose a design optimization for LISA actuation electronics.
A fast and high-quality charge model for the next generation general AMBER force field
Authors: He Xibing , Man Viet H. , Yang Wei , Lee Tai-Sung , Wang Junmei
Published: September 2020

The General AMBER Force Field (GAFF) has been broadly used by researchers all over the world to perform in silico simulations and modelings on diverse scientific topics, especially in the field of computer-aided drug design whose primary task is to accurately predict the affinity and selectivity of receptor–ligand binding. The atomic partial charges in GAFF and the second generation of GAFF (GAFF2) were originally developed with the quantum mechanics derived restrained electrostatic potential charge, but in practice, users usually adopt an efficient charge method, Austin Model 1-bond charge corrections (AM1-BCC), based on which, without expensive ab initio calculations, the atomic charges could be efficiently and conveniently obtained with the ANTECHAMBER module implemented in the AMBER software package. In this work, we developed a new set of BCC parameters specifically for GAFF2 using 442 neutral organic solutes covering diverse functional groups in aqueous solution. Compared to the original BCC parameter set, the new parameter set significantly reduced the mean unsigned error (MUE) of hydration free energies from 1.03 kcal/mol to 0.37 kcal/mol. More excitingly, this new AM1-BCC model also showed excellent performance in the solvation free energy (SFE) calculation on diverse solutes in various organic solvents across a range of different dielectric constants. In this large-scale test with totally 895 neutral organic solvent–solute systems, the new parameter set led to accurate SFE predictions with the MUE and the root-mean-square-error of 0.51 kcal/mol and 0.65 kcal/mol, respectively. This newly developed charge model, ABCG2, paved a promising path for the next generation GAFF development.
Temperature dependent carrier lifetime, diffusion coefficient, and diffusion length in Ge0.95Sn0.05 epilayer
Authors: Ščajev Patrik , Soriūtė Vaiva , Kreiza Gediminas , Malinauskas Tadas , Stanionytė Sandra , Onufrijevs Pavels , Medvids Arturs , Cheng Hung-Hsiang
Published: September 2020

The development of new technology, which would be able to shift photosensitivity of Si devices to the mid-infrared range, preserving the benefits of cheap silicon readout circuits, is of high priority for short-wave infrared photo-detection in defense, medical, night vision, and material production applications. Group IV GeSn-based materials have recently shown promising optoelectronic characteristics, allowing extension of the detection range to the mid-infrared region. However, the electronic properties of the material are not well understood and need further research. In this work, we provide temperature dependent studies of carrier lifetime, diffusion coefficient, and diffusion length in Ge0.95Sn0.05 epilayer on silicon by applying contactless light induced transient grating technique. The observed temperature dependence of lifetime was explained by the recombination of carriers on vacancy-related defects. The electron and hole capture cross sections were calculated. The temperature dependence of the diffusion coefficient indicated hole mobility limited by phonon and defect scattering. Weakly temperature dependent diffusion length of ∼0.5 μm verified material suitability for efficient submicrometer-thick optoelectronic devices.
A conservative gyrofluid model: Effect of closure on energetics
Authors: Kim S. S. , Jhang Hogun
Published: September 2020

We develop a conservative gyrofluid model that is suitable for global flux-driven simulations of electrostatic tokamak plasma turbulence. On the basis of the general gyrofluid moment equations, we derive energy equations which enable us to manipulate the impact of a gyrofluid closure on energetics. We demonstrate that an artificial manipulation of high order moment contributions to gyrofluid moment equations via a closure model can lead to the violation of the energy conservation. A fluid closure is also found to restrict the maximum attainable order of finite Larmor radius terms, implying the loss of dynamical information by the closure.
Room temperature magnetic shape-memory effect in strontium-doped lanthanum cobaltite single crystals
Authors: Yokosuka A. , Kumagai H. , Fukuda M. , Ando K. , Hara Y. , Sato K.
Published: September 2020

In this study, we investigated the temperature dependence of magnetostriction in the twinned rhombohedral perovskite structure-based lanthanum cobaltite La0.8Sr0.2CoO3. The magnetostriction measured in a magnetic field applied along the pseudocubic [111]c axis showed large hysteresis and residual strains. The residual strains are caused by the twin deformation, which we observed using x-ray diffraction. We found that the critical magnetic field for the twin deformation of La0.8Sr0.2CoO3 increases with temperature. The twin deformation occurs in a sufficiently strong magnetic field (∼6 T), even in the paramagnetic region at room temperature. We also confirmed that the temperature dependence of the critical magnetic field for twin deformation is related to the temperature dependence of the magnetization.
Stress–strain in electron-beam activated polymeric micro-actuators
Authors: Giambastiani Davide , Dispinzeri Fabio , Colangelo Francesco , Forti Stiven , Coletti Camilla , Tredicucci Alessandro , Pitanti Alessandro , Roddaro Stefano
Published: September 2020

Actuation of thin polymeric films via electron irradiation is a promising avenue to realize devices based on strain engineered two-dimensional materials. Complex strain profiles demand a deep understanding of the mechanics of the polymeric layer under electron irradiation; in this article, we report a detailed investigation on electron-induced stress on a poly-methyl-methacrylate (PMMA) thin film material. After an assessment of stress values using a method based on dielectric cantilevers, we directly investigate the lateral shrinkage of PMMA patterns on epitaxial graphene, which reveals a universal behavior, independent of the electron acceleration energy. By knowing the stress–strain curve, we finally estimate an effective Young’s modulus of PMMA on top of graphene, which is a relevant parameter for PMMA-based electron-beam lithography and strain engineering applications.
Red-to-blue photon upconversion based on a triplet energy transfer process not retarded but enabled by shell-coated quantum dots
Authors: Lai Runchen , Wu Kaifeng
Published: September 2020

Charge and/or energy transfer from photoexcited quantum dots (QDs) is often suppressed by a wide-bandgap shell. Here, we report an interesting, counter-intuitive observation that interfacial triplet energy transfer from QDs is not retarded but rather enabled by an insulating shell. Specifically, photoluminescence of red-emitting CdSe QDs could not be quenched by surface-anchored Rhodamine B molecules; in contrast, after ZnS shell coating, their emission was effectively quenched. Time-resolved spectroscopy reveals that the shell eliminates ultrafast hole trapping in the QDs and hence opens up the triplet exciton transfer pathway. The triplet energy of Rhodamine B can be reversely transferred back to QDs by thermal activation, or it can be passed to triplet acceptors in the solution. Capitalizing on the latter, we demonstrate red-to-blue photon upconversion based on QD-sensitized triplet–triplet annihilation with an efficiency of 2.8% and an anti-Stokes shift of 1.13 eV.
Cycloaddition reactions of o-quinone methides with polarized olefins
Authors: Osyanin Vitaly A. , Lukashenko Anton V. , Osipov Dmitry V.
Published: September 2020

The review summarizes and systematizes the [4+2]-cycloaddition reactions of o-quinone methides with electron-rich and electron-deficient olefins. The electron-rich substrates include vinyl ethers, vinyl sulfides, enamines, enamides, enols, furans, benzofurans and indoles, while the electron-deficient substrates are esters of unsaturated carboxylic acids, vinyl azides and quinones. Reactions with push-pull and captodative olefins are also considered. The mechanisms of some reactions are presented. A separate part of the review addresses reactions of p-quinone methides containing an o-hydroxyphenyl substituent at the exocyclic carbon atom, which can isomerize to o-quinone methides. Much attention is paid to oligomerization of o-quinone methides, which proceeds in the absence of active dienophiles or nucleophiles.

The bibliography includes 217 references.
The changing role of operational meteorologists
Authors: Sturrock Jenny , Griffiths Deryn
Published: September 2020

The Bureau of Meteorology is changing the way forecasts are produced, from a labour-intensive approach to a more streamlined approach. We describe the essence of the new forecast process using a case study to demonstrate a situation in which meteorologists use their professional judgement to modify what would otherwise be a largely automated forecast service.
Studies in Pyu phonology, I
Authors: Miyake Marc
Published: September 2020

The extinct Pyu language was spoken during the first millennium CE and the early centuries of the second millennium CE in what is now Upper Burma. It has been classified as Sino-Tibetan on the basis of basic vocabulary, but its precise position within the family remains unknown. It survives in inscriptions in an Indic script. In this study, the first of its kind, I begin to reconstruct Pyu phonology on the basis of spellings in those inscriptions. I propose that Pyu was a sesquisyllabic language with 7 preinitials and 43 or 44 initials.
Legal scenario towards the policy of marine natural resources on the continental shelf: Ambalat case study
Authors: Widhi Hananto Pulung , Doramia Lumbanraja Anggita , Rizki Prananda Rahandy , Ayu Musyafah Aisyah
Published: September 2020

The conflict in the continental shelf in Ambalat’s Zone between Indonesia and Malaysia always end up with miserable deadlocks and legal uncertainty. The concentration of the offering solution only focuses on the aspect of sovereignty but does not criticize or highlighting the regulatory aspect regarding natural resources and biodiversity. Based on UNCLOS 1982, the coastal State has the right to enforce its authority on the continental shelf and this is implying that everything contained instead of them including natural resources, can be claimed by the coastal State itself. The Ambalat case is a very complex issue to be studied in this journal, where the continental shelf is claimed by two coastal states: Indonesia and Malaysia. Some previous research only emphasized ‘unsettled dispute settlement’ without providing legal certainty in the form of clear regulations regarding the existence and the regulation of natural resources on the continental shelf. This opens the Pandora’s box whether the management of natural resources can be managed independently by their respective coastal states or joint sharing. The results of the study of this article is criticize and provide an option in the form of legal construction of how should or ideally legal policies regarding the regulation of natural resources on the continental shelf are full of potential conflicts (with special conditions).
Population dynamic of indian scad (Decapterus russelli) based on data in tasikagung fishing Port of Rembang
Authors: Nur Khasanah Aprilia , Wijaya Saputra Suradi , Teguh Taufani Wiwiet
Published: September 2020

Indian scad is a small pelagic fish that has important economical value. Indian scad caught by mini purse seine which is the most dominant fishing gear in Tasikagung Fishing Port of Rembang. The high demand of Indian scad, in fishermen enlarging their effort. The purpose of this research is to know the growth, mortality rate, exploitation rate and reproduction aspects including gonad maturity level and gonad maturity index of Indian scad. The research was conducted in January – April 2019. The method used was systematic random sampling. Data collected were size of fish (mm), weight (gram), weight of gonads (g) and catching area. The samples were collected twice a month. The length of fish ranged from 102 - 185 mm. The length-weight relationship analysis obtained equation W = 0.0000546TL2.73 and L50% 155 mm. Estimation of Von Bertalanffy growth equation is L∞ = 221 mm, K = 1.7 year−1, and the time of zero length (t0) = -0.322 year. Total mortality (Z) of indian scad was 2.91 year−1, natural mortality (M) was 1.48 year−1 and the fishing mortality (F) was 1.43 year−1. This indicates that the rate of exploitation of indian scad amounted 0.49 year−1. The pick recruitment occurred in August and September. The average Indian scad caught in the condition of maturity on gonad maturity level III and IV. Gonad maturity index of male Indian scad was 1.47 and females was 1.59.
Analysis of capture fish demand in Indonesia
Authors: Firmansyah  , Oktavilia Shanty , Prayogi Ryan , Wahyu Puspita Dita
Published: September 2020

Indonesia has a large population that faces food supply problems in the future, when it is estimated that Indonesias population will reach 300 million by 2045. To ensure the availability of accessible food with sufficient quality and quantity, appropriate policies are needed to overcome the problem originating from the supply and demand side. This study analyzes the domestic capture fish demand, which is influenced by the determinants such as fish price levels, the prices of product substitution of fish and income. By employing the data panel with fixed effect model (FEM) and random effect model (REM), the relationships of the dependent and independent variables are estimate. This study finds that income affected by the capture fish demand positively and elastic. The results of this study identified that one percent increase in income could increase capture fishery demand in Indonesia by 1.26 percent.
Antioxidant activity in seaweed (Sargassum sp.) extract fermented with Lactobacillus plantarum and Lactobacillus acidophilus
Authors: Rianingsih L , Sumardianto
Published: September 2020

Sargassum sp. has been known to contain rich of nutrients and bioactive compounds. In order to produce a non dairy probiotic beverage, this studty tried to fermented the Sargassum sp. using Lactobacillus plantarum and L. acidophilus. The aim of this study was to understand the changes of pH, viability of lactic acid bacteria, aerobic plate count and antioxidant activity. Fermentation was done at 37 °C for 24 hours. Total aerobic plate count (APC), Total plate count lactic acid bacteria (LAB), sensory, pH, fenol concentration and antioxidant activity were measured. The data were analyzed by ANOVA and Tukey test in order to know which treatments are different. The result showed the fermentation reduced the pH, increased the reducing sugar, TPC, viability of LAB starter, and antioxidant activity.
The contamination of filter feeder mussel Perna viridis Linnaeus, 1758 (Bivalvia: Mytilidae) by organophosphate pesticide at Brebes marine waters Central Java, Indonesia
Authors: Suryono C A , Irwani  , Sabdono A , Subagiyo  , Abi P , Yudiati E , Indardjo A , Mahendrajaya R T
Published: September 2020

In the last five years, organophosphate pesticides have been introduced in red onions fields in Brebes. This will broadly impact to the ecosystem, including the filter feeder marine organisms such as green mussel P. viridis. This article presents the occurrence level of organophosphate pesticides residues in marine waters and green mussel which has collected on Brebes marine areas. Some selected organophosphate pesticides compounds (Chlorpyrifos, Profenofos, Diazinon, Fenitrothion, Malation and Methidathion) of contaminant have been determined. The samples were analyzed by using gas chromatography and followed by using the method of Standard Method Examination. The results showed that average of six residues (Chlorpyrifos, Profenofos, Diazinon, Fenitrothion, Malation and Methidathion) in marine water were undetected (<0.0004 ppm). The merely concentration of PPOs detected was Chlorpyrifos 0.31 µg/L detected in green mussel. The concentration of organophosphate pesticides in these areas might contribute by the usage of organophosphate pesticide from red onion fields
Estimating carbon emission and baseline for blue carbon ecosystems in indonesia
Authors: Susetyo Adi Novi , Sumiran Paputungan Mohammad , Rustam Agustin , Harjuno Condro Haditomo Alfabetian , Medrilzam
Published: September 2020

There is a good chance for Indonesia, the largest archipelagic state in the world, to contribute to climate change mitigation effort by optimizing the ‘regulating and maintenance’ ecosystem service in the form of ‘blue carbon’ function provided by mangrove and seagrass. These so called ‘blue carbon’ ecosystems have 3-5 times capacity of storing and sequestering carbon compared to terrestrial vegetation. This paper attempts to provide the estimation of baseline or Business as Usual (BAU) scenario for blue carbon ecosystems which would be required if formal emission inventory of ‘blue carbon’ ecosystems is to be implemented. The result shows mangrove degradation occurs both during base years of 2000 - 2016 and during the projected emission period of 2017 - 2030. Mangrove conversion to aquaculture pond is the main cause of degradation, contributing up to 72.50 % of the total carbon emission. Blue carbon climate change mitigation by mangrove rehabilitation can only reduce up to 6 % of carbon emission from baseline in 2030. Significant emission reduction of 73,38% from BAU emission in 2030 can only be achieved through integration of mangrove rehabilitation, silvofishery practice and the prevention of mangrove conversion to other land-uses.
The strategies of Pekalongan fishing port development, Indonesia
Authors: Putri  , Eka Alayya , Boesono H. , Wijayanto D.
Published: September 2020

Fishing port has an important role in developing fishery and significant impact. Shopicated activities and the increasing fishery production can be optimized by reviewing and analyzing the condition of port facilities which are then obtained by the development strategies at the port. The research purpose was to analyze strategies for developing Pekalongan fishing port. The research method applied was descriptive survey method. It applys the analysis of existing conditions with satisfaction surveys (Likert Scale), analysis of facilities usage rating, and analysis of facilities completeness level, as well as SWOT analysis to analyze the factors systematically to formulate the development strategy. This research resulted a Likert scale score of 165.2 and score of 3 for facilities completeness level which stated that Pekalongan fishing port facilities are in good and complete condition. The usage rate of facilities at Pekalongan fishing port in port pond are 132.15%, ship channel 112.8%, wharf of ship docks >30 GT 98.94%, and <30 GT 108.14%, and fish auction place 33.26%. The development strategies obtained at Pekalongan fishing port include making integrated and sustainable fishing industry centers from handling to processing; improving the quality of port management in terms of service and operations; improved communication between the port and the government.
Retraction: Influence of lighting and noise on visual color assessment in textiles (IOP Conf. Series: Materials Science and Engineering
872 012033)
Authors: Silva Jesús , Rondon Carlos , Cabrera Danelys , Pineda Lezama Omar Bonerge
Published: September 2020

Published 15 September 2020

This article, and others within this volume, has been retracted by IOP Publishing following clear evidence of plagiarism and citation manipulation.

This work was originally published in Spanish (1) and has been translated and published without permission or acknowledgement to the original authors. IOP Publishing Limited has discovered other papers within this volume that have been subjected to the same treatment. This is scientific misconduct.

Misconduct investigations are ongoing at the author’s institutions. IOP Publishing Limited will update this notice if required once those investigations have concluded.

IOP Publishing Limited request any citations to this article be redirected to the original work (1).

Anyone with any information regarding these papers is requested to contact conferenceseries@ioppublishing.org.
Technological preparation of production for product quality management according to IATF 16949:16 requirements
Authors: Kasyanov S V
Published: September 2020

The article analyzes the content of the EU CCI in the conditions of Soviet enterprises. The tasks and additional procedures in the project of preparation of production and release of a new product that allow for the production of machine-building products in modern conditions of competition between domestic enterprises and international machine-building corporations are highlighted.
Application of electric spark doping technology for strengthening the surface of the Part
Authors: Khafizov I I , Nurullin I G
Published: September 2020

To increase the wear resistance and durability of parts, it is necessary to ensure proper roughness of the surface of the part. To achieve this goal, you can use the method of electric spark doping, which is characterized by energy intensity, environmental cleanliness and a number of other advantages. With the help of electric spark doping, both single-layer and multi-layer protective coatings can be applied, which allow you to obtain new surface materials.
About computer calculation error of vermicular graphite share in microstructure of CGI
Authors: Panov A G , Shaekhova I F , Ryzhkova S A , Degtyaryova N G , Ivanova V A
Published: September 2020

With each passing year, digital technologies are increasingly being used in industry, including for quality control of various materials. The article deals with the possibilities and problems of application of digital methods of microstructure control in CGI. The analysis of the main sources and grade of error of calculating the share of vermicular graphite in the microstructure of the CGI is made. The error remains unacceptably high for some material science tasks and requires further improvement.
Methods of Optimizing the Troubleshooting Parameters of Electric Power Facilities
Authors: Sabitov L S , Pavlov P P , Fandeyev V P , Butakov V M , Khusnutdinov A N , Siyetinskaya A S
Published: September 2020

The paper discusses the methods of optimizing the troubleshooting parameters, based on a combination of heuristic algorithms with the linear integer programming method. The methods are aimed at minimizing costs when creating troubleshooting support for healthy condition monitoring and troubleshooting for in-service and recoverable electronic devices and equipment of electric power systems.
Digitalization of education: transformation of a natural science experiment
Authors: Sagitova R N , Gilmanshina S I , Gilmanshin I R , Galeeva A I , Abyzbekova G M , Saduakaskyzy K
Published: September 2020

Under the conditions of digitalization of education, a natural science experiment is analyzed on the example of the development and transformation of a chemical experiment. The influence of the development of information and communication technologies and their implementation in education on the transformation of a natural science experiment and the effectiveness of using various forms of education, such as real and virtual experiments, in digital laboratories is examined.
Physical basis of thermal control of the operating mode of the refrigeration unit
Authors: Timerbaev I F , Gilmanshin I R
Published: September 2020

Diagnostics and output quality control of finished products in the context of digitalization of industrial enterprises can be considered as the most valuable source of objective data for compiling a digital passport of products and consumer goods. In modern conditions, confining ourselves exclusively to a performance check on the principle of “conforms / does not correspond” means breaking the causal relationship between products and the production process. In this article, we consider the engineering foundations of thermal imaging control of finished products on the example of a domestic refrigerator.
High-technology energy-efficient composite material made from waste of thermal power plants
Authors: Yusupova A A , Medvedeva G A , Akhmetova R O , Bobrishev A A
Published: September 2020

Polysulfide composite materials made from high tonnage waste of oil and gas and thermal power sectors were developed and studied. The composition of these materials was optimized. It was shown that the components interacted with each other, and a compact homogeneous structure was formed when pyrite was added.
Addendum: Radiation force and torque of light-sheets (2017 J. Opt. 19 065403)
Authors: Mitri F G
Published: September 2020

The purpose of this Addendum is to provide some clarifications and additional discussions related to the formalism of the generalized Lorenz–Mie theories in two-dimensions presented in the manuscript (Mitri F G 2017 J. Opt.
19 065403). The generalized formalism provides exact mathematical expressions that are used to compute the optical scattering, and time-averaged radiation force and torque of any light-sheets of arbitrary wavefront illuminating a homogeneous dielectric cylindrical particle of arbitrary geometrical cross-section, suspended in a lossless medium of wave propagation. In particular, it is emphasized here that concerning the analytical derivations and calculations based on far-field limits of the scattering, the Poynting vector formalism can only be utilized to determine the optical radiation force vector and its components, a result that is commensurate with the same outcome of an analysis based on the integration of the time-averaged Maxwell stress tensor. Nevertheless, in the far-field, the Poynting vector formalism is not valid to evaluate the optical radiation torque because it is radial, and the integration of its moment over a surface of large radius enclosing the particle leads to a zero torque, not in agreement with the derivation based on Maxwell’s stress tensor. Therefore, the analytical expression required to derive the optical radiation torque component (either in the near-field or far-field limits of the scattering, which lead to equivalent expressions without any approximations in the case of a lossless medium of wave propagation) should always involve the integration of the moment of the time-averaged Maxwell stress tensor.
Atomic diffusion behavior and diffusion mechanism in Fe–Cu bimetal casting process studied by molecular dynamics simulation and experiment
Authors: Zhang Guowei , Kang Yuanyuan , Wang Mingjie , Xu Hong , Jia Hongmin
Published: September 2020

A molecular dynamics (MD) method with an embedded atomic method (EAM) was proposed to study the atomic diffusion behavior and diffusion mechanism in the Fe–Cu bimetal casting process. The results indicated that the diffusion coefficient of the Cu atoms was larger than that of the Fe atoms at the same temperature, but the Fe atoms predominantly diffused into the Cu side in the process of diffusion bonding. Moreover, the relationship between diffusion distance and temperature was predicted by the established model, and the optimal temperature for interface diffusion bonding of Fe–Cu bimetal ranged from 1473K to 1753 K. The diffusion behavior was mainly due to vacancies, which played a key role in the formation of the Cu cluster, and the accumulation of Cu atoms decreased the system energy. Finally, FeAcknowledgmentsCu bimetal casting was prepared to validate the simulated results of the diffusion behavior and diffusion distance, and the simulated results were consistent with the experimental ones.