bluuebunny/crossref_metadata_2025_split huggingface dataset:
Structure of a putative immature form of a Rieske-type iron-sulfur protein in complex with zinc chloride
Authors: Tsutsumi Erika , Niwa Satomi , Takeda Ryota , Sakamoto Natsuki , Okatsu Kei , Fukai Shuya , Ago Hideo , Nagao Satoshi , Sekiguchi Hiroshi , Takeda Kazuki 
Published: September 2023

AbstractIron-sulfur clusters are prosthetic groups of proteins involved in various biological processes. However, details of the immature state of the iron-sulfur cluster into proteins have not yet been elucidated. We report here the first structural analysis of the Zn-containing form of a Rieske-type iron-sulfur protein, PetA, from Thermochromatium tepidum (TtPetA) by X-ray crystallography and small-angle X-ray scattering analysis. The Zn-containing form of TtPetA was indicated to be a dimer in solution. The zinc ion adopts a regular tetra-coordination with two chloride ions and two cysteine residues. Only a histidine residue in the cluster-binding site exhibited a conformational difference from the [2Fe-2S] containing form. The Zn-containing structure indicates that the conformation of the cluster binding site is already constructed and stabilized before insertion of [2Fe-2S]. The binding mode of ZnCl2, similar to the [2Fe-2S] cluster, suggests that the zinc ions might be involved in the insertion of the [2Fe-2S] cluster.
A novel exopolysaccharide (p-CY01) from the Antarctic bacterium Pseudoalteromonas sp. strain CY01 cryopreserves human red blood cells
Authors: Kim Sung Jin , Youn Ui Joung , Kang Pilsung , Kim Tai Kyoung , Kim Il-Chan , Han Se Jong , Lee Dong-Woo , Yim Joung Han 
Published: September 2023

A novel EPS (p-CY01), derived from Antarctic Pseudoalteromonas sp. strain CY01, can serve as a non-penetrating cryopreservation agent for the long-term storage of human red blood cells.
Profile generation using the filtering technique for the fast motion and smooth performance in the hardware level of autonomous system
Authors: Lam Duc Khai , Ngo Nhat Minh , Ngo Ha Quang Thinh 
Published: September 2023

AbstractThis study addresses the challenge of motion control in autonomousvehicles through the introduction of a novel profile generation design. Specifically,autonomous vehicles often contend with uncertain factors and physicallimitations within their operational environments, such as abrupt changes inacceleration or intricate parametric motion profiles. To tackle this problem, afiltering technique for motion profile generation is proposed, leveraging ahardware programming language as its foundation. The investigation begins byanalyzing the specific structure of the mobile platform, which includes twoactive side wheels, two passive rear wheels, a high load capacity, and adifferential drive mode. Building upon this theoretical basis, the proposedfiltering technique is introduced to attain smooth motion profiles and optimizetiming. Furthermore, the study suggests the use of FPGA (Field ProgrammableGate Array) acceleration to expedite these computations for swift motionprocessing. To validate the efficacy of the proposed method, both the mobilevehicle and the load are simulated as a one‐axis linear ball‐screw system withan aluminum ruler. The experimental results unequivocally demonstrate theeffectiveness, feasibility, and applicability of the proposed approach across avariety of industrial solutions.
Model predictive direct torque control of a three‐phase four‐switch inverter induction motor driving system
Authors: Qu Jialong , Li Kerui , Yan Shuo 
Published: September 2023

AbstractWith the development of power electronics and motor driving system, AC motor speed control or the servo system has been widely explored. Among them, the Induction Motor (IM) driving based on a three‐phase six‐switch inverter has become a mature technology for a wide range of applications. However, in some scenarios, a certain fault‐tolerant ability and further cost savings are required. Under this circumstance, the motor driving system based on the three‐phase four‐switch inverter is proposed. However, it has fewer voltage vectors, with unequal amplitudes, spatial asymmetry, and no zero vector, which will inevitably lead to the deterioration of the control performance. In this study, the operation of the four‐switch inverter IM driving is analysed in detail. The model predictive direct torque control (MPDTC) is proposed to obtain better static and dynamic characteristics. Through the simulation and experimental studies, the control algorithm is verified to drive a 2.2 kW IM. Compared with the conventional DTC, the proposed MPDTC has a rapid dynamic response and greatly reduces the torque and flux ripple in a steady state.
Parameterizing pressure–temperature profiles of exoplanet atmospheres with neural networks
Authors: Gebhard Timothy D. , Angerhausen Daniel , Konrad Björn S. , Alei Eleonora , Quanz Sascha P. , Schölkopf Bernhard 
Published: September 2023

Context.Atmospheric retrievals (AR) of exoplanets typically rely on a combination of a Bayesian inference technique and a forward simulator to estimate atmospheric properties from an observed spectrum. A key component in simulating spectra is the pressure–temperature (PT) profile, which describes the thermal structure of the atmosphere. Current AR pipelines commonly use ad hoc fitting functions here that limit the retrieved PT profiles to simple approximations, but still use a relatively large number of parameters.Aims.In this work, we introduce a conceptually new, data-driven parameterization scheme for physically consistent PT profiles that does not require explicit assumptions about the functional form of the PT profiles and uses fewer parameters than existing methods.Methods.Our approach consists of a latent variable model (based on a neural network) that learns a distribution over functions (PT profiles). Each profile is represented by a low-dimensional vector that can be used to condition a decoder network that mapsPtoT.Results.When training and evaluating our method on two publicly available datasets of self-consistent PT profiles, we find that our method achieves, on average, better fit quality than existing baseline methods, despite using fewer parameters. In an AR based on existing literature, our model (using two parameters) produces a tighter, more accurate posterior for the PT profile than the five-parameter polynomial baseline, while also speeding up the retrieval by more than a factor of three.Conclusions.By providing parametric access to physically consistent PT profiles, and by reducing the number of parameters required to describe a PT profile (thereby reducing computational cost or freeing resources for additional parameters of interest), our method can help improve AR and thus our understanding of exoplanet atmospheres and their habitability.
A multi-technique approach to identifying and/or constraining radial-velocity substellar companions
Authors: Philipot F. , Lagrange A.-M. , Kiefer F. , Rubini P. , Delorme P. , Chomez A. 
Published: September 2023

Context. Although more than one thousand substellar companions have already been detected with the radial velocity (RV) method, many new companions remain to be detected in the public RV archives.
Aims. We wish to use the archival data obtained with the ESO/HARPS spectrograph to search for substellar companions.
Methods. We used the astronomic acceleration measurements of stars obtained with the HIPPARCOS and Gaia satellites to identify anomalies that could be explained by the presence of a companion. Once hints for a companion were found, we combined the RV data with absolute astrometry data and, when available, relative astrometry data, using a Markov chain Monte Carlo algorithm to determine the orbital parameters and mass of the companion.
Results. We find and characterize three new brown dwarfs (GJ 660.1 C, HD 73256 B, and HD 165131 B) and six new planets (HD 75302 b, HD 108202 b, HD 135625 b, HD 185283 b, HIP 10337 b, and HIP 54597 b) with separations between 1 and 6 au and masses between 0.6 and 100 MJup. We also constrain the orbital inclination of ten known substellar companions and determine their true mass. Finally, we identify twelve new stellar companions. This shows that the analysis of proper motion anomalies enables the optimization of the RV search for substellar companions and their characterization.
First report of an Ediacarian basement in the Western Alps: the Serre Chevalier crystalline unit (Briançonnais domain, France)
Authors: Thiéblemont Denis , Jacob Jean-Baptiste , Lach Philippe , Guerrot Catherine , Leguérinel Mathieu 
Published: September 2023

We report new LA-ICP-MS U-Pb zircon ages of varied crystalline rocks occurring in the Serre Chevalier crystalline terrain, an allochtonous basement unit located at the top of the Briançonnais nappes stack ∼5 km west of Briançon city. Mapped as an undifferentiated metasedimentary basement on the geological map at 1/50,000 scale, this unit actually displays varied lithologies including alternating micaschist, paragneiss, quartzite, coarse-grained conglomerate and felsic (leptynite) to mafic (amphibolite) gneiss of magmatic origin. All rocks were metamorphosed in response to a dominant pre-Alpine event under amphibolite facies conditions. Partial recrystallization under low-grade amphibolite to greenschist facies conditions was associated with alpine events. Zircon ages were obtained on four types of rocks: (i) a micaceous quartzite from the core of the metasedimentary unit displays a dominant age population around 610 Ma, with a minimal age of 580 Ma, and subordinated age populations at c. 940 Ma, 1825 Ma and 2100-2560 Ma ; (ii) a granite boulder from a coarse-grained conglomerate yields a well-defined age of 582 ± 5 Ma and subordinated inherited ages between 1800 and 2200 Ma. Zircon rims of probable metamorphic origin provide a concordant age of 492 ± 4 Ma ; (iii) a gneissic band in the vicinity of the conglomerate is dated at 597 ± 4 Ma ; (iv) a coarse-grained garnet amphibolite yields an age of 517 ± 3 Ma interpreted as the emplacement age of the protolith, either as intrusive unit cutting accross the sedimentary succession or lava intercalated within the sediments.
The mainly Ediacarian record in the metasediments (quartzite and granite boulder in conglomerate) lead us to conclude that this material resulted from the erosion of a nearby Ediacarian (Cadomian ?) basement. The age of 517 Ma obtained on the amphibolite provides a minimum age for the sedimentary succession which deposition is therefore bracketed between 582 Ma and 517 Ma. This interval is comparable to that of the metasedimentary units of the Brioverian group of the Armorican Massif. Based on their low Th/U ratio, the 492 Ma-old zircon rims in the granite boulder are attributed to an Upper Cambrian metamorphic event.
Bronchoscopy masks mitigate aerosols during upper gastrointestinal endoscopies
Authors: Phillips Frank , Crowley Jane , Warburton Samantha , Parra-Blanco Adolfo , Gordon George S. D. 
Published: September 2023

Abstract
Background and study aims Upper gastrointestinal endoscopies are
considered aerosol-generating procedures (AGP) that risk spread of airborne diseases such as
SARS-CoV-2. We aimed to investigate where clinically approved bronchoscopy masks applied to
patients during esophagogastroduodenoscopies can mitigate spread of aerosols and
droplets.
Patients and methods This study included patients undergoing routine upper gastrointestinal endoscopy in a standard endoscopy room and used a particle counter to measure size and number of particles 10 cm from the mouths of 49 patients undergoing upper gastrointestinal endoscopies, of whom 12 wore bronchoscopy masks and 37 did not (controls). Particle counts in the aerosol (≤ 5 µm diameter) and droplet (> 5 µm-diameter) size ranges were measured and averaged over the duration of procedures.
Results The use of bronchoscopy masks offers a 47% reduction
(P = 0.01) in particle count for particles < 5 μm in diameter
over the procedure duration (aerosols).
Conclusions Bronchoscopy masks or similar are a simple, low-cost
mitigation technique that can be used during outbreaks of respiratory diseases such as
COVID-19 to improve safety and reduce fallow times.
Reticulated Platelets Predict Cardiovascular Death and Adverse Events in Coronary Artery Disease: A Systematic Review and Meta-analysis
Authors: Chiarito Mauro , Bernlochner Isabell , Bongiovanni Dario , Novelli Laura , Condello Francesco , Kirmes Kilian , Han Jiaying , Wein Bastian , Elvinger Sébastien , Viggiani Giacomo , von Scheidt Moritz , Laugwitz Karl-Ludwig , Raake Philip W.J. , Kastrati Adnan 
Published: September 2023

Background The pro-thrombotic immature or reticulated platelets (RPs) are known to be elevated in high-risk patients and in different pathological settings. It has been shown that RPs correlate with an insufficient antiplatelet response to antiplatelet agents. RPs are emerging novel predictors of adverse cardiovascular events in cardiovascular disease. This study, using the totality of existing evidence, evaluated the prognostic role of RPs in patients with coronary artery disease.
Methods We performed a systematic review and meta-analysis including trials of acute and chronic coronary syndrome reporting clinical outcomes according to RPs levels in the peripheral blood. We compared patients with elevated RPs (RPshigh) to patients without elevated RPs (RPslow). Odds ratios (ORs) and 95% CIs were used as metric of choice for treatment effects with random-effects models. The primary endpoint was major adverse cardiovascular and cerebrovascular events (MACCE). Secondary endpoints were cardiovascular death, myocardial infarction, ischemic stroke, urgent coronary revascularization and bleedings.
Results A total of 7 studies, including 2213 patients, were included. The risk for MACCE was significantly higher in RPshigh compared to RPslow patients (OR 2.67 [1.87; 3.81], I2
= 43.8%). RPshigh were associated with cardiovascular death (OR 2.09 [1.36; 3.22], I2
= 40.4%). No associations for RPshigh were detected with the other singular components of MACCE: myocardial infarction (OR 1.73 [0.89; 3.38] I2
= 60.5%) and stroke (OR 1.72 [0.59; 4.96] I2
= 21%). The risk of bleeding did not differ between groups(OR 0.58 [0.15; 2.22] I2
= 86.1%).
Conclusion Elevated RPs are significantly associated with increased risk of cardiovascular events and cardiovascular death.
Bias-assisted photoelectrochemical planarization of GaN (0001) with impurity concentration distribution
Authors: Toh D. , Kayao K. , Ohnishi R. , Osaka A. I. , Yamauchi K. , Sano Y. 
Published: September 2023

To planarize semiconductor materials such as gallium nitride (GaN) and silicon carbide with high efficiency, we developed a polarization method that combines ultraviolet irradiation and an abrasive-free polishing method known as catalyst-referred etching (CARE). In this method, the substrate surface is photoelectrochemically oxidized, thus improving the removal rate. Accordingly, an atomically well-ordered surface was obtained at a removal rate 100 times higher than that of the conventional CARE method without ultraviolet irradiation. However, in some cases, for GaN substrates with a high oxygen impurity concentration area, the oxidation rate is nonuniform on the substrate surface, resulting in the formation of a rough surface. In this study, we propose the application of a positive bias to the GaN substrate to suppress the oxidation rate fluctuation. In the positive bias state, the width of the depletion layer generated at the interface of GaN and the etchant becomes uniform on the entire surface regardless of crystallographic fluctuation, thereby achieving a uniform oxidation rate. When only 3.0 V was applied, the oxidation rate was uniform; thus, a flat GaN surface without the footprint originating from crystallographic fluctuations was obtained.
Repeated, imagined, hearsay
Authors: Thomas Jenelle 
Published: September 2023

AbstractIn this paper, I analyse the representation of reported discourse in testimony from a 1795 conspiracy trial. I present a framework for analysing scribal intervention in discourse reporting and show that, although the transcription conventions of historical criminal proceedings offer the appearance of being objective representations, recorded testimony privileges idealised representations of speech events. In fact, a special status is given to those speech events to which those in the courtroom were not privy, that is, hearsay. When scribes use Direct Discourse to report this type of speech, they are simultaneously marking it as evidence available for judicial decision-making and distancing themselves from the judgment and interpretation process. I show that this is particularly problematic for interpreted testimony. This has implications for both our understanding of historical courtroom processes and the use of trial transcripts for historical sociolinguistic and pragmatic analysis.
Comparison of standards in field of measurement of 3D parameters of surface texture
Authors: Milovanova E A , Kosteev V A , Lysenko V G , Makarevich V B , Khrol A S , Kayupova M , Epenov T 
Published: September 2023

Main text
In accordance with the COOMET comparison program for 2019, comparisons of unit length standards in the field of measuring 3D surface texture parameters were carried out in 2019 on the topic COOMET 776/RU-a/19. Pilot laboratory: Russian Research Institute of Metrological Service (VNIIMS, Russia). Participants: Russian Research Institute of Metrological Service (VNIIMS, Russia), Belarussian State Institute of Metrology (BelGIM, Belarus) and KazStandart (Kazakhstan).
To reach the main text of this paper, click on Final Report. Note that this text is that which appears in Appendix B of the BIPM key comparison database https://www.bipm.org/kcdb/.
The final report has been peer-reviewed and approved for publication by the CCL, according to the provisions of the CIPM Mutual Recognition Arrangement (CIPM MRA).
Design of a high-precision heat flow meter to characterize the thermoelectric module
Authors: Ren Hongrui , Niu Chunping , He Hailong , Wu Yi , Zhao Yabo , Li Youqun 
Published: September 2023

Abstract
Accurate characterization of the thermoelectric module (TEM) is a prerequisite for its application. Among the physical parameters of the TEM, the heat flow is crucial but it is the most difficult parameter to measure. This paper summarizes the previously reported heat flow measurement methods and proposes a heat flow meter (HFM) for TEM characterization with a sandwich structure composed of copper-glass-copper. The key factors affecting the precision of the HFM are analyzed with the assistance of simulation to obtain its design principles and fabrication procedures. A self-designed calibration device is used to calibrate the HFM to understand the relationship between heat flow and temperature. The HFM can characterize the TEM’s heat flow with its normalized root mean square error of no more than 2%. The accurate characterization of the TEM shows great potential to contribute to the development of TEM technologies.
A graphical derivation and statistical evaluation of simplified polynomials to determine vapour pressure deficit for use in ultra-low power microcontroller applications
Authors: Goodchild Martin S 
Published: September 2023

Abstract
The aim of this work has been to derive and statistically evaluate the accuracy of second-order and third-order polynomials to determine vapour pressure deficit (VPD). These polynomials take air temperature and relative humidity measurements to determine VPD without the use of an exponential function, as proposed by F W Murray in 1967. Replacing the exponential function with a 2nd or 3rd order polynomial may be beneficial in ultra-low power microcontroller-based measurement applications where; code size, memory usage and power requirements are critical design drivers. However, oversimplification may impact precision. This work presents alternative 2nd order and 3rd order equations that have been derived from a Murray equation dataset where VPD isothermal datasets were plotted against relative humidity. These linear relationships allow y = mx + c analysis where, (i) ‘c’ can be set to zero with a offset in the relative humidity data, and, (ii) ‘m’ can be derived from a 2nd of 3rd order polynomial where ‘m’ = f(T) and is derived using Excel-based fitting of the gradients from the isothermal datasets. The resulting ‘m’ = f(T) 2nd and 3rd order polynomials presented R
2 values of 0.998 04 and 0.999 98 respectively. A Bland-Altman statistical assessment was performed, where the Murray equation (reference) dataset is plotted against the difference between the reference and polynomial datasets using the same air temperature and relative humidity inputs. The difference datasets presented 2-sigma (95% confidence interval) variances for the 2nd and 3rd order polynomials as <±0.1 kPa and <±0.01 kPa respectively. The 2nd and 3rd order polynomials also resulted in a bias values of <0.0037 kPa and <0.0013 kPa respectively. These results suggest that a 3rd order polynomial equation could be used to determine VPD in ultra-low-power microcontroller measurement applications, with minimal impact on VPD measurement precision.
Influence of novel additives and antiwear agents on the properties of PAO-based magnetorheological fluids
Authors: Wang Lifeng , Li Chuanjiang , Liu Xinhua , Lu He , Zhang Yiwei , Yang Mao 
Published: September 2023

Abstract
Aiming to prepare high-property magnetorheological fluids (MRFs), experiment materials, optimized preparation processes, experimental methods, experimental procedures and test methods were elaborated for high-performance MRFs. Two carrier fluids, novel additives and three antiwear agents were selected to prepare MRFs. The characteristics of the MRFs samples including the settlement stability, zero-field viscosity, shear yield stress and wear resistance were tested and analyzed. The measurement of shear yield stress was obtained using a self-designed MRFs characteristics testing test-bed. The microstructure of unworn and worn magnetic-particles were observed using scanning electron microscope. Experimental results showed that HFGEL-310 and SD-104 mixed in a certain proportion can enhance settlement stability of MRFs, three antiwear agents can slow down the wear of MRFs to a certain extent and MRFs-31 with AlN had the best anti-wear performance. MRFs based on PAO10 with HFGEL-310 2.7%, SD-104 2.9% and AlN 5% was high-performance MRFs with good overall properties.
Collimation, compression and acceleration of isotropic hot positrons by an intense vortex laser
Authors: Cao Y , Hu L X , Zou D B , Yang X H , Hu Y T , Zhao J , Lu Y , Yin Y , Shao F Q , Yu T P 
Published: September 2023

Abstract
Laser-driven positron sources, characterized by short pulse width, small focal spot and high energy, are promising for potential applications, e.g. electron–positron collider and positron annihilation spectroscopy. However, the broad divergence angle and wide pulse width during the laser-driven positron transport are extremely unfavorable for achieving high spatiotemporal resolution. In this paper, we propose a novel method to manipulate the positrons by using a left-hand circularly-polarized Laguerre–Gaussian (LG) laser pulse. Using the LG laser with a intensity of

1.2
×

10

21

W
c
m

−
2

and a duration of a few cycles, three-dimensional particle-in-cell simulations reveal that isotropic hot positrons can be effectively captured, collimated, compressed, and accelerated due to the unique field structure of the LG laser. A high-quality positron bunch is obtained with a peak divergence angle of 1∘, an average pulse duration of 0.5 fs, a maximum energy of 450 MeV, and a density of 70 times that of the initial electron source. A damping vibration model is also formulated to explain qualitatively the quality improvement of the positrons.