bluuebunny/crossref_metadata_2025_split huggingface dataset:
Improved precision of radial velocity measurements after correction for telluric absorption
Authors: Ivanova A. , Lallement R. , Bertaux J.-L. 
Published: February 2023

Context. The detection of planets around other stars by measurement of stellar radial velocity (RV) variations benefits from improvements to dedicated spectrographs that can lead to the achievement of a precision of 1 m s−1 or better. Spectral intervals within which stellar lines are contaminated by telluric lines are classically excluded from the RV processing.
Aims. We aim to estimate the potential improvement of the precision of radial velocity measurements from telluric-absorption removal and subsequent extension of the useful spectral domain.
Methods. We developed a correction method based on the online web service TAPAS that allows a synthetic atmospheric transmission spectrum to be determined for the time and location of observations. This method was applied to telluric H2O and O2 absorption removal from a series of 200 consecutive ESPRESSO exposures of the K2.5V star HD40307 available in ESO archives. We calculated the radial velocity using the standard cross-correlation function (CCF) method and Gaussian fit of the CCF, with uncorrected spectra and the ESPRESSO standard stellar binary mask on one hand, and telluric-corrected spectra and an augmented binary mask with 696 additional lines on the other.
Results. We find that the precision of radial velocity measurements is improved in the second case, with a reduction of the average formal error from 1.04 m s−1 down to 0.78 m s−1 in the case of these ESPRESSO data and this stellar type for the red arm. Using an estimator of the minimal error based on the photon noise limit applied to the full CCF, the error is reduced from 0.89 m s−1 down to 0.78 m s−1. This corresponds to a significant decrease (by about 35%) in the observing time required to reach the same precision in the red part.
40 Jahre DVGS – Grußwort der dvs Kommission
Gesundheit
Authors: Woll Alexander 
Published: February 2023

„Die Zeit eilt – wir eilen mit“ (Wilhelm Busch)Dies gilt insbesondere für die rapiden Veränderungen im
Gesundheitswesen. Der DVGS hat die letzten 40 Jahre diese Entwicklung erfolgreich
begleitet und aktiv mitgestaltet. Von einem „kleinen
Pflänzlein“ zu Beginn der 1980er-Jahre hat er sich zu einem
wichtigen Player in der gesundheitspolitischen Landschaft entwickelt. Parallel zum
Boom der gesundheitssportlichen Studiengänge an deutschen Hochschulen
erweiterte sich auch das Aufgabenspektrum des DVGS dynamisch.
Synthesis of Acidiphilamide A–C: Secondary Metabolites from the Genus Streptacidiphilus
Authors: Behera Manoranjan , Mallesham Poosa , Raghavulu Karri , Miriyala Venkatesh , Doddipalla Raju , Yennam Satyanarayana , Sanasi Paul Douglas 
Published: February 2023

AbstractWe describe the efficient total syntheses of naturally occurring tripeptides acidiphilamides A–C and epi-acidiphilamides A–C, which were prepared from commercially available l-phenyl alanine using hexafluorophosphate azabenzotriazole tetramethyl uronium (HATU) as peptide coupling reagent. The structures of the natural acidiphilamides A, B and C were characterized by NMR, MS and SOR data, which match those of natural products, whereas the structures of epi-acidiphilamides A, B and C were confirmed by 2D NMR studies.
A first-principles investigation on the adsorption of octanal and nonanal molecules with decorated monolayer WS2 as promising gas sensing platform
Authors: Aasi Aref , Ebrahimi Bajgani Sahar , Panchapakesan Balaji 
Published: February 2023

With the broad applications of two-dimensional transition, metal dichalcogenides in gas sensing prompt us to investigate the adsorption and gas sensing properties of the bare and metal-decorated tungsten disulfide (WS2) interaction with nonanal and octanal gas molecules by using first-principles methods. In this regard, first-principles calculations based on density functional theory (DFT) have been employed to study the detection of nonanal and octanal as well-known breast cancer biomarkers. The results showed that the pristine WS2 monolayer is not appropriate to develop gas sensors for the target. Based on the detailed DFT calculations, decoration of the WS2 surface with Ni and Pt could enhance gas detection and sensitivity and tune the energy bandgap. The present results suggested that the adsorption energy of nonanal and octanal has been increased to −2.59 and −2.34 eV after interaction with Ni-decorated WS2. In addition, sensitivity has been enhanced significantly, and the recovery time of 7.76 s for Ni-decorated WS2 was achieved after interaction with octanal gas. As a result, the decorated WS2-based nanosensor might be an auspicious platform for gas detection. Undoubtedly, this work can open up a prospect for the use of excellent Ni-/Pt-decorated WS2 materials to achieve high-efficiency detection of nonanal and octanal gas molecules.
Production of a large volume non-equilibrium region in an atmospheric argon arc plasma with a counter injection of cold gas from an annular anode
Authors: Fang Chuan , Zhang Zi-Ming , Wang Yao-Ting , Luo Lan-Yue , Li Zhi-Hui , Zeng Shi , Li He-Ping 
Published: February 2023

Abstract
In this letter, an annular anode is designed for producing arc plasmas with a large non-equilibrium region by using a counterflow cold gas through the annular anode. The coupled mass-momentum-energy exchange processes in an argon arc plasma are studied numerically and experimentally. The counter-injection of the cold argon gas from the center of the anode leads to a steep gradient of the heavy-particle temperature due to the formation of a thin stagnation layer resulting from the interaction of the high temperature plasma with the cold gas; and in particular, a large volume non-equilibrium ‘dark’ plasma region is obtained above the anode surface. The results show that, with the enhancement of the convective heat transfer process in the plasma core region, the fraction of the non-equilibrium region to the whole arc plasma region reaches 92.2% where the heavy-particle temperature can be reduced significantly, e.g. ∼2300 K, while simultaneously, the electron temperature and number density are remained at high levels greater than 8000 K and 2.4 × 1020 m−3, respectively, under the operating condition studied in this letter. This research not only deepens the understanding to the non-equilibrium synergistic transport mechanisms of arc plasmas, but also provides a method for producing a large volume non-equilibrium plasma region so as to promote various existing applications, or even creating new applications in the future.
Dynamic heat and charge transports through double-quantum-dot-interferometer modulated by Majorana bound states and time-oscillating Aharonov-Bohm flux
Authors: Zou Wei-Ke , Wang Qing , Zhao Hong-Kang 
Published: February 2023

Abstract
Dynamic properties of Majorana bound states (MBSs) coupled double-quantum-dot (DQD) interferometer threaded with ac magnetic flux are investigated, and the time-averaged thermal current formulas are derived. Photon-assisted local and nonlocal Andreev reflections contribute efficiently to the charge and heat transports. The modifications of source-drain electric, electric-thermal, thermal conductances (G, ξ, κ

e
), Seebeck coefficient (S

c
), and thermoelectric figure of merit (ZT) versus AB phase have been calculated numerically. These coefficients exhibit the shift of oscillation period from 2π to 4π distinctly due to attaching MBSs. The applied ac flux enhances the magnitudes of G, ξ, κ

e
obviously, and the detailed enhancing behaviors are relevant to the energy levels of DQD. The enhancements of S

c
and ZT are generated due to the coupling of MBSs, while the application of ac flux suppresses the resonant oscillations. The investigation provides a clue for detecting MBSs through measuring the photon-assisted S

c
and ZT versus AB phase oscillations.
Damage monitoring of the planting balcony in vertical greenery buildings using the EMI method
Authors: Li Ying , Wei Mingkang , Hu Xiaobin 
Published: February 2023

Abstract
Vertical greenery buildings generally have high ecological, aesthetics, and economic benefits. This paper focuses on damage monitoring of a reinforced concrete (RC) planting balcony in a high-rise vertical greenery building using the electro-mechanical impedance (EMI) method. Damage evaluation of the concrete using the EMI method was first carried out through theoretical analysis and experimental investigations. They both indicate that the conductance resonant frequency (CRF) of the piezoelectric transducer has a good linear correlation with damage of the concrete. According to the experimental results, damage evaluation criteria of concrete are proposed based on the CRF. On the basis of the above work, damage monitoring of a RC planting balcony employing a total of 13 piezoelectric transducers was conducted for about 7 months. The results show the planting balcony was slightly damaged which mainly happened before planting during the whole monitoring process.
Dynamic conditioning of two particle discrete-time quantum walks
Authors: Pegoraro Federico , Held Philip , Barkhofen Sonja , Brecht Benjamin , Silberhorn Christine 
Published: February 2023

Abstract
In real photonic quantum systems losses are an unavoidable factor limiting the scalability to many modes and particles, restraining their application in fields as quantum information and communication. For this reason, a considerable amount of engineering effort has been taken in order to improve the quality of particle sources and system components. At the same time, data analysis and collection methods based on post-selection have been used to mitigate the effect of particle losses. This has allowed for investigating experimentally multi-particle evolutions where the observer lacks knowledge about the system's intermediate propagation states. Nonetheless, the fundamental question how losses affect the behaviour of the surviving subset of a multi-particle system has not been investigated so far. For this reason, here we study the impact of particle losses in a quantum walk of two photons reconstructing the output probability distributions for one photon conditioned on the loss of the other in a known mode and temporal step of our evolution network. We present the underlying theoretical scheme that we have devised in order to model controlled particle losses, we describe an experimental platform capable of implementing our theory in a time multiplexing encoding. In the end we show how localized particle losses change the output distributions without altering their asymptotic spreading properties. Finally we devise a quantum civilization problem, a two walker generalisation of single particle recurrence processes.
Discrimination of coherent states via atom–field interaction without rotation wave approximation
Authors: Zhang Jin-Hua , Zhang Fu-Lin , Liang Mai-Lin , Wang Zhi-Xi , Fei Shao-Ming 
Published: February 2023

Abstract
Quantum state discrimination is an important part of quantum information processing. We investigate the discrimination of coherent states through a Jaynes–Cummings (JC) model interaction between the field and the ancilla without rotation wave approximation (RWA). We show that the minimum failure probability can be reduced as RWA is eliminated from the JC model and the non-RWA terms accompanied by the quantum effects of fields (e.g. the virtual-photon process in the JC model without RWA) can enhance the state discrimination. The JC model without RWA for unambiguous state discrimination is superior to ambiguous state discrimination, particularly when the number of sequential measurements increases. Unambiguous state discrimination implemented via the non-RWA JC model is beneficial to saving resource costs.
Percolation and jamming properties in object growth model on a lattice with impurities
Authors: Dujak D , Karač A , Budinski-Petković Lj , Jakšić Z M , Vrhovac S B 
Published: February 2023

Abstract
Percolation model with nucleation and object growth is studied by Monte Carlo simulations on a triangular lattice with point-like impurities. Growing objects are needle-like objects and self-avoiding random walk chains. In each run through the system the lattice is initially randomly occupied by point-like impurities at given concentration

ρ

i
m
p

. Then the seeds for the object growth are randomly distributed at given concentration ρ. The percolation properties and the jamming densities are compared for the two classes of growing objects on the basis of the results obtained for a wide range of densities ρ and

ρ

i
m
p

up to the percolation threshold for the monomer deposition on a triangular lattice. Values of the percolation thresholds

θ
p
∗

have lower values for the needle-like objects than for the self-avoiding random walk chains. The difference is largest for the lowest values of ρ and

ρ

i
m
p

, and ceases near the values of the site percolation threshold for monomers on the triangular lattice,

ρ
p
∗

≃
0.5

. Values of the jamming coverage

θ

J

decrease with

ρ

i
m
p

for given ρ. This effect is more prominent for the growing random walk chains.
A comparative study of Raman spectroscopic and photoluminescence properties of the eggshell powder and conventional calcium carbonate
Authors: Kaur Navneet , Singh K. 
Published: February 2023

Abstract
A comparative study on eggshell powder and commercially available CaCO3 has been conducted. The Raman spectra of eggshell powder show the bands of the calcite phase. However, the bands of eggshell powder are more intense than the conventional CaCO3. The peaks of eggshell powder also show some blue shift, which indicates that the calcite phase of eggshell powder is more Raman sensitive than the conventional CaCO3. Additionally, conventional CaCO3 also exhibits some extra bands of the aragonite phase. The photoluminescence spectra of eggshell powder show a narrow band and merged band than the commercially used CaCO3. This study indicates that eggshells could be a good and pure alternative for commercially available calcium carbonate.
Simple and Productive Method to Develop Highly Sensitive and Fast Infrared Photodetector Using Spray Deposited Nanocrystalline PbS Thin Film
Authors: Thabit Mohammed Y. H. , Kaawash Nabeel M. S. , Begum Sumayya , Halge Devidas I. , Narwade Vijaykiran N. , Alegaonkar Prashant S. , Bogle Kashinath A. 
Published: February 2023

Abstract
This work demonstrates the development of a highly sensitive and fast infrared photodetector using a PbS thin film deposited using a simple and scalable method known as “spray pyrolysis”. An aqueous precursor solution was deposited on a glass substrate at 150 °C have a cubic phase of PbS. Silver electrodes with a 1 mm gap are drawn on the film to create photo-detector devices. Low resistive contact between the silver electrode and the PbS film is revealed from the linear I-V measurements performed in the dark and under light illumination. Under the illumination of a 100-watt tungsten lamp, the photo-responsivity, sensitivity, response time, and decay time of the PbS film were measured. The Ag/PbS/Ag photodetector device has a responsivity of 70 mA/W, a sensitivity of 200 at 30 V, and the best response and decay times of 6.4 and 15.6 ms, respectively. The photodetector device produced by this simple and low-cost fabrication method has a fast response and decay time.
A Recent Development of Luminescence Properties of Yb3+ Doped Metal Halide Perovskites Nanocrystals for Photonic Applications: A Review
Authors: Sunatkari A. L. , Talwatkar S. S. , Sonawane Harsha M. 
Published: February 2023

Abstract
Yb3+ doped metal halide perovskites nanocrystals have received a lot of interest recently as cutting-edge materials for solar applications because of their excellent carrier mobility, extremely long carrier diffusion lengths, and acceptable optical band gaps. The remarkable features of Yb 3+ doped metal halide perovskites also make them useful in a wide range of applications, including light-emitting diodes, lasers, X-ray detectors, memory devices, and more. Here, the unique characteristics of the various Yb 3+ doped metal halide perovskites materials are discussed along with their luminescence properties to show why these materials are so intriguing for a variety of applications. We outline recent advances in halide perovskites uses outside of photovoltaic and offer suggestions.
Review on Enhancement of Stability and Efficiency of Perovskite Solar Cell
Authors: Sunatkari A. L. , Talwatkar S. S. , Kajrokar Reshma 
Published: February 2023

Abstract
For photovoltaic applications, organic-inorganic hybrid perovskite solar cells have a extensive array of characteristics, including elevated absorption coefficients, exceptional carrier mobility, long charge carrier diffusion lengths, low cost, and incredible development. As emerging solar cell with thin film technology, these solar cells have generated many concerns. The elevated efficiency along with the low cost of materials and process are the main benefit of this cell over commercial silicon or other organic and inorganic solar cells. The foundations behind the optoelectronic description of perovskite materials and important methods for creating highly efficient perovskite solar cells have been covered in this paper. The degradation mechanisms of unstable perovskite materials and the associated solar cells are discussed. There are two more ways to increase the stability of perovskite materials and perovskite solar cells: interface engineering between the hole transport layer and the perovskite active layer and interface alteration between the electron transport layer and the perovskite layer. The future development of PSC architecture engineering is finally given a perspective and outlook.
Simulation of Alq3/Alq3:NTCDA/NPB heterostructure based OLED
Authors: Sharma Gunjan , Kattayat Sandhya , Josey Smitha , Sublania H. K. , Alvi P. A. 
Published: February 2023

Abstract
In this article an attempt has been made to design the meshing structure of Alq3/Alq3:NTCDA/NPB layers based OLED and to determine the the optical characteristics such as PL (photo luminescence), emission rate, and normal spectral density. The studies of all these parameters suggest that the heterostructure system based OLED is useful for the emission of high intense radiations in the visible region (wavelength region ~500 nm).
Design and analysis of low loss solid-core hexagonal photonic crystal fiber for applications in terahertz regime
Authors: Renuka Rani K , Chitra K 
Published: February 2023

Abstract
An index-guiding novel solid-core photonic crystal fiber (SC-PCF) formed by a hexagonal lattice of circular-shaped air holes arranged in silicon background is realized. By varying the radius ‘r’ of the air holes from 0.1a to 0.5a (where ‘a’ is defined as the lattice constant), the characteristic electromagnetic modes of the low loss Terahertz (THz) fiber were solved through eigenmode analysis using finite element method (FEM). The effective mode area and the nonlinearity of the proposed PCF are calculated for different radii of the air holes and it is found that the effective mode area decreases when the radius of the air holes is increased. On the other hand, the nonlinearity increases for an increase in the air holes radii. At 1 THz, the confinement loss of the proposed fiber is in the order of 10−23 dB/m and transmittance efficiency above 96% has been attained. As 5-G technology emanates, THz wave propagation becomes essential and the designed hexagonal lattice SC-PCF will be useful for the advancement of communication systems, sensing devices and several medical applications.
All Optical Integrated MOEMS Optical Coherence Tomography System
Authors: Bais Ashish Singh , Chouhan Lokendra Singh , Andrews Joseph Thomas 
Published: February 2023

Abstract
Integrating all optical components of an optical coherence tomography (OCT) device into a single chip is non-trivial and a challenging job. The design and development of such a lab-on-a chip is possible only via Micro-Opto-Electro-Mechanical System (MOEMS) technology. The reproducible and integrated optical device fabrication would reduce cost and size many folds as compared to bulk or fiber optic OCT system. A miniaturized OCT of size less than 5mm2 area is designed, simulated, and optimized. The successful fabrication of this device would help in point-of-contact devices as well as embedded biomedical sensor applications. Also, the design promises the possibility of fabrication of all optical components of OCT integrated into a single chip.
A Novel Chirped Bragg Grating Based Spectral Domain Delay Generator
Authors: Chouhan Lokendra Singh , Bais Ashish Singh , Andrews Joseph Thomas 
Published: February 2023

Abstract
Light dispersion and chirping of spectral lines of a broadband light source is major issue with spectral domain optical coherence tomography. We designed a novel spectral delay line using multimode interference coupler and chirp Bragg grating. We considered the waveguide material as S-1813 polymer. Light from the broad-band light source is first dispersed then delayed in time. The bunches of delayed spectra produce chirping. The design ensures that the bandwidth of each bunch is about 30nm linewidth at a central wavelength of 1.55µm, corresponding to a coherence length of 15µm. The design is optimized for maximum dispersion with (i) minimum possible number of Bragg gratings and (ii) low attenuation and radiative losses. Tolerance measurements for differential refractive index also reported.
Williamson-Hall and Size-strain plot based micro-structural analysis and evaluation of elastic properties of Dy3+ substituted Co-Zn nano-spinels
Authors: Nikam C U , Kadam S R , Shitole R S , Birajdar A P , Barote V K , Wadgnae S R , Kadam R H , Kale G H 
Published: February 2023

Abstract
Polycrystalline Co-Zn nanoferrites doped with rare earth Dy3+ ions having general chemical formula Co0.9Zn0.2DyxFe1.9-xO4 (x = 0.0, 0.015, 0.03, 0.045 and 0.06) were synthesized via sol-gel auto-combustion route. Powder X-ray diffraction (XRD), scanning electron microscopy (SEM) and Fourier transform Infrared Spectra (FTIR) were performed to investigate the structural, microstructral, surface morphology and elastic properties. Well indexed XRD patterns confirm the phase purity and cubic spinel structure of the samples. Fractional doping of Dy3+ ions shifts the Bragg’s lines slightly towards the lower angles which in turn increases the lattice lengths from 8.3795 Å to 8.3834 Å. The strain induced in the crystal lattice was estimated by using Williamson-Hall and Size – Strain Plot methods. Both methods confirm that the tensile type strain was induced in the crystal lattice and increases with the substitution of Dy3+ ions. Surface morphology of the samples was studied by using SEM images which reveals that the grains are almost spherical in nature and the size obtained is analogues with XRD results. FTIR spectra shows the existence of two main absorption bands within the wave number range 388 – 586 cm−1 which confirm the characteristics of spinel ferrites. Elastic properties were estimated by using FTIR data. Elastic moduli and Debye temperature increases with the substitution of Dy3+ ions which are interpreted on the basis of interatomic bondings.