bluuebunny/crossref_metadata_2025 huggingface dataset:
Absolute quantum yield for understanding upconversion and downshift luminescence in PbF2:Er3+,Yb3+ crystals
Authors: Madirov Eduard , Busko Dmitry , Howard Ian A. , Richards Bryce S. , Turshatov Andrey
Published: April 2023

Absolute quantum yields of upconversion and downshift luminescence measured with an integrating sphere are reported for single crystals of PbF2 co-doped with Er3+ and Yb3+.
Characteristic growth of chemical gardens from mixtures of two salts
Authors: Kubodera Yujin , Xu Yu , Yamaguchi Yuta , Matsuo Muneyuki , Fujii Masashi , Kageyama Maya , Steinbock Oliver , Nakata Satoshi
Published: April 2023

Chemical gardens formed from two metal salts (MCl2or MSO4) have been investigated to understand the effects of mixing on the growth of precipitate tubes.
Chemical vapor deposition of uniform bilayer PtS2 flakes for electrocatalytic hydrogen evolution
Authors: Zhao Yu-Qing , Zhu Liang , Zhou Bojian , Jiang Shaolong
Published: April 2023

Uniform bilayer PtS2 flakes are obtained on mica by chemical vapor deposition. The PtS2 flakes transferred onto Au foil demonstrate good electrocatalytic hydrogen evolution reaction performance.
Core–shell Mo2C@NC/Mo2C hollow microspheres as highly efficient electrocatalysts for the hydrogen evolution reaction
Authors: Zhang Xuefei , Lei Tao , Xia Miao , Wei Qiao-Hua , Xie Zailai
Published: April 2023

The Mo2C@NC/Mo2C hollow microspheres exhibit outstanding catalytic activity and fast kinetics toward hydrogen evolution in both acidic and alkaline solutions.
Pivot, persevere, or perish: how Ellume Health overcame development and regulatory obstacles to become the first authorized over-the-counter COVID-19 test in the United States
Authors: Greenleaf Morgan N. , Nehl Eric , Damhorst Gregory L. , Lam Wilbur A.
Published: April 2023

Ellume Health's COVID-19 home test development journey provides lessons for microfluidic and diagnostic developers.
A leaf-like porous N-doped carbon structure embedded with CoS2 nanoparticles self-supported on carbon fiber paper as a cathode in flexible zinc–air batteries
Authors: Chen Mengyu , Wu Yongjian , Zhou Yujie , Yu Xinxin , Dai Peng , Yu Jing , Jiang Tongtong , Wu Mingzai
Published: April 2023

Leaf-like porous N-doped carbon structures embedded with CoS2 nanoparticles self-supported on carbon fiber paper have excellent battery cycle stability in flexible zinc–air batteries.
Peripherally “tertiary butyl ester” functionalized bipyridine cored dendrons: from synthesis and characterization to molecular dynamic simulation study
Authors: Raju Liju , Nikkhah Sousa Javan , Vandichel Matthias , Rajkumar Eswaran
Published: April 2023

In this study, we report the design, synthesis, characterization and solvent dependent behaviour of series of new bipyridine cored poly(benzyl-ether) dendrons functionalized with tertiary butyl esters.
A bright orange-red emitting phosphor Ba9La2W4O24:Eu3+ with double perovskite structure and abnormal thermal quenching behavior
Authors: Ma Xiaoxi , Wang Chuqi , Lv Qingyi , Shao Bohuai , Yang Shuo , Wang Chuang
Published: April 2023

The Ba9La2W4O24:Eu3+ phosphor has abnormal thermal quenching behavior and potential applications in the solid-state lighting field.
Macroscopic and fluorescence detection of reactive oxygen species by using a glucose-linked tetraphenylethylene polymer gel
Authors: Yu MiaoMiao , Xu Ningge , Cai Xu-Min , Liu Heng , Han Shuaiyuan , Yu Fabiao , Fang Weiwei
Published: April 2023

By using a fluorescent glucose-linked tetraphenylethylene polymer gel, the macroscopic and fluorescence detection of ROSin vitroand in cells was successfully realizedviaselective gel collapse and remarkable fluorescence quenching.
Recent advances in the (3+2) cycloaddition of azomethine ylide
Authors: Dubey Sapana , Pal Anit , Roy Shreya , Sasmal Souvik , Tamrakar Aashi , Jana Rathin , Das Tapas
Published: April 2023

We have tried to demonstrate [3+2] cycloaddition of azomethine ylides for the synthesis of several bioactive compounds. Different methodologies, including metal-catalyzed as well as metal-free asymmetric and racemic synthesis, have been explained.
Synthesis and characterization of Y-shaped optical nonlinear chromophores with strong acceptors
Authors: Li Zhibei , Zeng Ziying , Wu Shuangke , Liu Jianhua , Luo Tongyu , Liao Juanfei , Yang Ruoxi , Liu Fenggang
Published: April 2023

High r33 and poling efficiency at 1310 nm were achieved for the film containing 100 wt% Y-type chromophores L2–L3 with double donors.
Tailoring multifunctional anions to inhibit methanol absorption on a CsPbBr3 quantum dot surface for highly efficient semi-transparent photovoltaics
Authors: Xu Yinyan , Niu Pujun , Zhang Lun , Wen Ziying , Cheng Sheng , Lyu Mei , Zhu Jun
Published: April 2023

A simple anion modification strategy was developed to inhibit MeOH absorption in CsPbBr3 QDs. The CsPbBr3 QD solar cell yielded a PCE of 7.04%, which is the highest PCE reported for CsPbBr3 QD solar cells to date.
Regioselective synthesis of novel nitroso-pyrazolylquinoxalines via HOAc-mediated cyclocondensation of 2-hydroxyimino-1,3-diketones with hydrazinylquinoxalines
Authors: Bobrov Pavel S. , Kirik Sergei D. , Peterson Ivan V. , Suboch Georgii A.
Published: April 2023

The regioselective synthesis of nitroso-pyrazolylquinoxalines via cyclocondensation of 2-hydroxyimino-1,3-diketones with hydrazinylquinoxalines by both one-pot and two-step procedures is reported. The oxidation and reduction of Het-NO were showed.
Synthesis of a fully protected long-chain polyamine subunit of aculeine B using the photoremovable NPEC group
Authors: Miyahara Masayoshi , Wakabayashi Ryoya , Irie Raku , Oikawa Masato
Published: April 2023

A protected dodecameric polymer of 1,3-propanediamine was synthesized by the Ns strategy. Versatility of the NPEC protecting group is also reported.
Brønsted acid-catalyzed C6 functionalization of 2,3-disubstituted indoles for construction of cyano-substituted all-carbon quaternary centers
Authors: Huang Wen-Jun , Liu Li-Xia , Zhou Yong-Gui , Wu Bo , Jiang Guo-Fang
Published: April 2023

The construction of cyano-substituted all-carbon quaternary centers via Brønsted acid-catalyzed direct C6 functionalization of 2,3-disubstituted indoles with 2,2-diarylacetonitriles is reported.
Magnesium halide-catalyzed hydroboration of isocyanates and ketones
Authors: Shi Jinyi , Luo Man , Zhang Xuguang , Yuan Taoyue , Chen Xiaoyan , Ma Mengtao
Published: April 2023

Simple and commercially available magnesium halides catalyzed the hydroboration of various isocyanates and ketones.
Customized thermoplastic polyhydroxyurethanes synthesized from ene-containing cyclic carbonates, dithiols and diamines: design, mechanical properties and applications in adhesives
Authors: Xu Weikun , Ding Yutong , You Shibin , Chao Cheng , Wu Bozhen , Chen Feng
Published: April 2023

Polyhydroxyurethanes with tunable thermo-mechanic and self-healing properties are successfully synthesized, and show prominent pressure-sensitive adhesive at low temperature.
Development and perspectives of multi-site electrocatalysts for neutral hydrogen evolution
Authors: Zhou Jianqing , Xie Yunlong , Yang Lun , Liu Yisi , Du Yue , Yu Luo , Yu Ying
Published: April 2023

This review offers an overview of the design principles, progress, and perspectives of applying multi-site electrocatalysts for the HER in neutral media.
Sunlight-activated Eu3+-doped CaNaSb2O6F yellow-orange long-persistence luminescence material
Authors: Chen Xuexia , Pang Ran , Wang Shangwei , Yuan Weihong , Su Jiangyue , Tan Tao , Zhang Su , Li Chengyu , Zhang Hongjie
Published: April 2023

A novel sunlight-activated persistent luminescence phosphor CaNaSb2O6F:Eu3+ with strong yellow-orange PL/PersL is synthesized, and it can be recharged rapidly and effectively in various natural conditions using natural sunlight.
Growth of a flexible fibre in a deformable ring
Authors: Cutolo Arsenio , Fraldi Massimiliano , Napoli Gaetano , Puglisi Giuseppe
Published: April 2023

We study the equilibrium configurations related to the growth of an elastic fibre in a confining flexible ring.
Efficiently predicting and synthesizing intrinsic highly fire-safe polycarbonates with processability
Authors: Yu Ronghua , Wang Shengda , Zhu Yue , Li Qianyu , You Jiangan , Qiu Jian , Wang Yanhui , Liu Jie , Tang Tao
Published: April 2023

An efficient strategy based on a material genome approach is created to predict highly fire-safe polycarbonates (PCs) with balanced processability. The predicted PCs show excellent comprehensive properties, especially exceptional fire-safe performance.
Formation of wide-bandgap, highly transparent and compact Cd1−xZnxS films with dynamically controlled pH in chemical bath deposition
Authors: Hoque Md. Mayrazul , Zubair Md. Abdullah , Sajjad Redwan N.
Published: April 2023

We synthesize compact Cd1−xZnxS films for low to high Zn content using chemical bath deposition by maintaining the pH at an optimum level throughout the process. We report high transmittance and wide bandgap for high Zn content films.
Graduate-Level Training of Speech-Language Pathologists for the Provision of Auditory Rehabilitation
Authors: Henton Alice , Glade Rachel
Published: April 2023

Purpose:

This study investigated the type and amount of graduate-level training speech-language pathology students receive in the area of auditory rehabilitation to prepare them to provide clinical services for individuals with hearing loss.

Method:

The curricula of 251 accredited speech-language pathology programs in the United States were reviewed. The data were used to document the current trends in higher education to prepare speech-language pathology students to provide auditory rehabilitation.

Results:

Only 52% of the graduate programs required a course related to auditory rehabilitation, while 12% offered courses only as elective content.

Conclusions:

Given the scope of practice of speech-language pathologists and the increased likelihood of working with individuals with hearing loss due to an upward trend in the diagnosis of hearing loss, it is important that higher education programs ensure that future speech-language pathologists are prepared to provide auditory rehabilitation and be well prepared for working with individuals with hearing loss across the life span. A review of curricula as well as a strong consideration to require an auditory rehabilitation course and clinical training at the graduate level for speech-language pathologists is warranted.
Cluster aggregates surrounding Pismis 5 in the Vela molecular ridge
Authors: Qin Ming Feng , Zhang Yu , Liu Jinzhong , Song Fangfang , Hu Qingshun , Wang Haozhi , Ma Shuo , Lü Guoliang
Published: April 2023

Context.In theGaiaera, the precision of astrometric data is unprecedented. High-quality data make it easier to find more cluster aggregates and gather further confirmation of these open clusters.

Aims.We useGaiaData Release 3 (DR3) to redetermine the open clusters surrounding Pismis 5 in the Vela molecular ridge (VMR). We also investigate the basic properties of these clusters.

Methods.We applied two clustering algorithms (STARGO and pyUPMASK) to identify the open-cluster members in five-dimensional space withα,δ,ϖ,μαcos δ, andμδ.

Results.We identify eight open clusters surrounding Pismis 5 in the VMR. The open cluster QZ 1 is newly discovered. As a result of our investigation of the comprehensive properties of the clusters, we present one open binary cluster candidate (Alessi 43 and Collinder 197) and one triple open-cluster candidate (Pismis 5, Pismis 5A, and Pismis 5B).

Conclusions.We identify binary and triple open-cluster candidates as potential primordial aggregates based on their similar age, position, and motion. According to kinematic speculations, the two aggregate candidates will gradually separate, and their interiors will slowly disintegrate.
Extended atomic data for oxygen abundance analyses
Authors: Li W. , Jönsson P. , Amarsi A. M. , Li M. C. , Grumer J.
Published: April 2023

As the most abundant element in the universe after hydrogen and helium, oxygen plays a key role in planetary, stellar, and galactic astrophysics. Its abundance is especially influential in terms of stellar structure and evolution, and as the dominant opacity contributor at the base of the Sun’s convection zone, it is central to the discussion on the solar modelling problem. However, abundance analyses require complete and reliable sets of atomic data. We present extensive atomic data for O I by using the multiconfiguration Dirac–Hartree–Fock and relativistic configuration interaction methods. We provide the lifetimes and transition probabilities for radiative electric dipole transitions and we compare them with results from previous calculations and available measurements. The accuracy of the computed transition rates is evaluated by the differences between the transition rates in Babushkin and Coulomb gauges, as well as via a cancellation factor analysis. Out of the 989 computed transitions in this work, 205 are assigned to the accuracy classes AA-B, that is, with uncertainties smaller than 10%, following the criteria defined by the Atomic Spectra Database from the National Institute of Standards and Technology. We discuss the influence of the new log(gf) values on the solar oxygen abundance, ultimately advocating for log єO = 8.70 ± 0.04.
Comparison of laboratory and in situ reflectance spectra of Chang’e-5 lunar soil
Authors: Chang Rui , Lin Honglei , Yang Wei , Ruan Renhao , Liu Xiaoying , Tian Heng-Ci , Xu Jiafei
Published: April 2023

Context.Reflectance spectra provide essential information on the mineralogical composition of a planetary surface. However, the spectral characteristics of lunar soil are significantly influenced by its photometric properties, coupled with space weathering and particle size.

Aims.China’s Chang’e-5 (CE5) mission returned lunar soil samples and obtained in situ spectra of the sampling site, enabling us to compare the laboratory and in situ analyses of the same sample.

Methods.In this study, we measured the reflectance spectra of the bulk CE5 soil and two size fractions (<45 and 45–355 μm) at various phase angles (41.3° to 101.3°).

Results.The photometric properties of the CE5 samples exhibit back scattering, whereas an in situ measurement appears as forward scattering, indicating that in situ photometric experiments are always necessary for spectral exploration on the Moon. In addition, the scattering properties of the <45-μm fraction are closer to the in situ spectral data, suggesting that the finer fraction could be more representative of pristine lunar soil. The maturity of CE5 soil is estimated to be submature to mature based on the spectral ratio between 750 nm and 950 nm.
Relativistic theory for time and frequency transfer through flowing media with an application to the atmosphere of Earth
Authors: Geršl Jan
Published: April 2023

Context. Several space missions that will use atomic clocks on board of an Earth-orbiting satellite are planned for the near future, such as the Atomic Clock Ensemble in Space (ACES) or the Space Optical Clock on the International Space Station (I-SOC). The increasing accuracies of the developed clocks and of the links connecting them with ground stations impose corresponding accuracy requirements for theoretical models of electromagnetic signal propagation through the atmosphere of Earth and for the related time and frequency transfer corrections. For example, the fractional frequency accuracy of the optical lattice clock for the I-SOC project is about 10−17.

Aims. We develop a relativistic model of one- and two-way time and frequency transfer. In addition to the gravitational effects, it also includes the effects of atmospheric refractivity and atmospheric flows within the relativistic framework.

Methods. The model is based on an analytical solution of the equation of motion of a light ray in spacetime filled with a medium: the null geodesic equation of Gordon’s optical metric.

Results. Explicit formulas for one- and two-way time and frequency transfer corrections are given using realistic fields of the gravitational potential, the refractive index, and the wind speed, taking nonstationarity and deviations from spherical symmetry into account. Numerical examples are provided that focus on two-way ground-to-satellite transfer, with satellite parameters similar to those of the International Space Station. The effect of the atmospheric refractive index increases as the satellite position moves from zenith to horizon, and it is shown that the effect ranges from 0 ps to 5 ps for two-way time transfer and from 10−17 to 10−13 for two-way frequency transfer, with a steep increase as the satellite approaches the horizon. The effect of the wind contribution is well below 1 ps for the two-way time transfer for normal atmospheric conditions, but for the two-way frequency transfer, the effect can be significant: A contribution of 10−17 is possible for a horizontal wind field with a velocity magnitude of about 11 m s−1.

Conclusions. The atmospheric effects including the effect of wind should be considered in the forthcoming clock-on-satellite experiments such as ACES or I-SOC.
Dynamic Optimal Transport on Networks
Authors: Burger Martin , Humpert Ina , Pietschmann Jan-Frederik
Published: April 2023

We study a dynamic optimal transport problem on a network. Despite the cost for transport along the edges, an additional cost, scaled with a parameter κ, has to be paid for interchanging mass between edges and vertices. We show existence of minimisers using duality and discuss the relationship of the model to other metrics such as Fisher–Rao and the classical Wasserstein metric. Finally, we examine the limiting behaviour of the model in terms of the parameter κ.
Investigation of the effect of algorithms of positioning robots on their power and energy consumption
Authors: Volkov Andrey , Kolesnikova Anna , Kornilova Anastasia , Matsko Olga
Published: April 2023

The paper is devoted to the study of motion algorithms that determine the power and energy consumption of process equipment and positioning robots, which are important factors affecting the environment and environmental safety of the technosphere. Based on the study of mathematical models of the degrees of mobility of the gantry robot drives, it is found that under the traditional laws of motion, a fairly significant peak in power consumption occurs at the end of acceleration. The paper shows that by separating in time the moments of the end of acceleration of different drives, it is possible to significantly reduce the maximum power of the robot. A comprehensive approach to the choice of an algorithm and laws of motion that provide an acceptable combination of energy consumption and maximum power consumption has been developed. The authors have shown that there are such laws of motion that ensure the constancy of power for the duration of the acceleration stage and its minimization. The relationship between the minimum instantaneous power and power consumption for such robots has been established. The results obtained can be used to optimize the operation algorithms of both of existing and newly +-robots.
Associated Petroleum Gas Utilization: New Opportunities for the Oil and Gas Complex in a Circular Economy
Authors: Riadinskaia Arina , Cherepovitsyna Alina
Published: April 2023

The topic of the beneficial use of associated petroleum gas (APG) remains relevant due to the limited resources and environmental problems. This is the engine for the active development of management theory and practice with a focus on such concepts as resource saving, energy efficiency and circular economy, which determine the vector of environmentally oriented development of industrial enterprises. In this paper, the existing methods of APG utilization are considered, a qualitative comparison of technologies in terms of such parameters as CAPEX, marketable output, prospects for the sale of commercial products, loss of profits, environmental damage, extraction of petrochemical raw materials from APG, technology implementation period is carried out. Based on the example of the Messoyakha fields, the economic efficiency of APG utilization technologies, which correspond to the characteristics of the field (injection into the reservoir, shallow and deep processing) was calculated. The calculations showed that deep conversion is the most effective method of utilization of APG stored in underground gas storage (UGS) of the Messoyakha fields. This method of APG utilization is integrated into the circular economy system and meets its principles.
Transformation of daily food practices of indigenous peoples of Taimyr through the prism of environmental change
Authors: Bobrova Vasilisa
Published: April 2023

This paper presents the results of a trip to the Krasnoyarsk Krai in the spring of 2021. The work was carried out in the cities of Dudinka, Norilsk and in the settlements of Ust-Avam, Volochanka, Levinsky Peski of the Taimyr Dolgan-Nenets municipal district of the Krasnoyarsk Krai. The main purpose of the study was to examine the transformation of the food system of the residents of the above-mentioned settlements, as well as to consider the problem of delivery of goods and their transportation to these remote settlements, and the impact of these difficulties on the life and economy of local residents. Environmental changes are also an important factor in the formation of local food resources. Their influence plays one of the main roles in the self-sufficiency of the peninsula residents in food supply. The work was conducted with various categories of the population: people of different ages, men and women, hunters, fishermen, hunters, reindeer breeders, representatives of the administration, employees of trading companies and people employed in the sphere of educational field.
Analysis of the hydrodynamic modeling market under the environmental conservation concept
Authors: Ivanov Artem , Kruk Marina , Litvin Vladimir
Published: April 2023

The paper presents a comprehensive analysis of the global software market for modeling technological processes in the field of oil and gas based on data from independent analytical agencies. The work covers various aspects of the industry through a study of key competitors. The paper also provides a better understanding of the meaning of modeling software implementation. The assessment of the potential of the domestic market (TAM-SAM-SOM method) was carried out and the expediency of introducing Russian software for hydrodynamic modeling of high-viscosity oil was substantiated.
Opportunities and Limiting Factors for Tourism Development in the Khibiny
Authors: Vorobievskaya Elena , Kirillov Sergey , Sedova Natalia , Slipenchuk Michael
Published: April 2023

The Khibiny attracts more and more attention as an interesting and promising object attracting flows of tourists and athletes not only from a number of regions of Russia, but also from abroad. In this regard, significant changes are taking place in Kirovsk in the structure of economic activity, associated, first of all, with the reorganization of recreational activities. However, the presence of mining facilities in this area has caused a large load on natural ecosystems. As a result, an adverse environmental situation is developing in the study area, which limits the development of recreation here. To assess the current state and identify opportunities for the development of recreational activities in the Khibiny, in particular, in the city of Kirovsk and its environs, comprehensive studies were carried out in January 2019, 2020 and in August 2021. The results show that this region is a very attractive recreation center, and vacationers and local residents are interested in the development of tourism in this area. At the same time, the studies revealed a number of problems limiting the development of tourism in the Khibiny, which include, first of all, the deterioration of the quality of the natural environment associated with the emergence of technogenic landscapes as a result apatite-nepheline mining. socio-economic factors that reduce the tourist and recreational attractiveness of the Khibiny include the low level of development of tourist infrastructure and the quality of services.
Comparative assessment of salivary level of cortisol, anxiety and depression in patients with oral lichen planus
Authors: Jafari Soudeh , Baharvand Maryam , Jarahzade Maryam , Namdari Mahshid , Hojjat Pardis , Alimohammadi Marzieh
Published: April 2023

Oral lichen planus (OLP) is an inflammatory condition of oral mucosa and skin. The present study compared salivary cortisol, depression and anxiety levels of patients with erosive and reticular OLP and healthy controls. In this case-control trial, 69 individuals (23 healthy, 23 erosive OLP and 23 reticular OLP patients) were selected. The participants completed the hospital anxiety and depression scale (HADS) and 5 mL of their unstimulated saliva were collected. Salivary cortisol levels were measured by enzyme-linked immunosorbent assay(ELISA). The comparison of anxiety and depression scores as well as salivary cortisol levels was done one-way analysis of variance (ANOVA) test while the paired comparisons were done by Turkey post hoc test. The mean anxiety score in erosive OLP patients was significantly higher than that in the control and reticular OLP groups. The reticular OLP and control groups had no significant difference in this respect. The three groups were not significantly different regarding the depression score or salivary level of cortisol. The correlation between depression and anxiety was significant but salivary level of cortisol had no correlation with anxiety or depression. This study showed that anxiety control may aid in control of erosive OLP, although further investigations are required.
A comparative study for assessment of post-operative sequelae following mandibular transalveolar molar extractions using ozone and dexamethasone
Authors: Poddar Vishal Kumar , Juneja Mehak , Arora Srimathy S. , Ganguly Samrat , Jain Swapnil Mahavir , Upadhyay Ankita Pati
Published: April 2023

Objectives: Trans-alveolar extractions involve surgical removal of tooth that has its own postoperative sequelae, most commonly manifested as pain and swelling. This study aims to compare the efficacy of topical ozone and dexamethasone in management of post-operative sequelae after mandibular trans-alveolar molar extractions. Materials and Methods: Sixty patients requiring surgical removal of mandibular molars under local anesthesia were randomly allocated into two groups, each group consisting of 30 patients. Group 1 received Topical Ozonated Oil in the extraction socket post-operatively, while Group 2 was administered 8 mg dexamethasone injection post-operatively. The patients were checked for postoperative wound healing, pain and swelling on 1st, 3rd and 7th day. Results: The results showed comparatively similar results for the pain severity and swelling score at the 1st and 7th postoperative day in both the groups. A greater reduction of pain was noticed in Group 1 on 3rd postoperative day. Wound Healing was noted to be better in Group 1 at 3rd and 7th post-operative day. Conclusion: In conclusion, topical ozone therapy can be used as an effective alternative treatment modality, when compared to dexamethasone for better management of post-operative sequelae following mandibular trans-alveolar molar extractions.
Activation of the Acute-Phase Response in Hemophilia
Authors: Knowles Lynn M. , Wolter Carolin , Menger Michael D. , Laschke Matthias W. , Beyer Lars , Grün Ulrich , Eichler Hermann , Pilch Jan
Published: April 2023

To identify recurrent inflammation in hemophilia, we assessed the acute-phase response in the blood of patients with hemophilia A and B. Compared to age- and weight-matched controls, blood levels of interleukin-6 (IL-6), C-reactive protein (CRP), and LPS-binding protein (LBP) were significantly elevated in the entire cohort of hemophilia patients but exhibited a particularly pronounced increase in obese hemophilia patients with a body mass index (BMI) ≥30. Subgroup analysis of the remaining nonobese hemophilia patients (BMI: 18–29.9) revealed a significant spike of IL-6, CRP, and LBP in connection with a de-novo increase of soluble IL-6 receptor α (sIL-6Rα) in patients with bleeding events within the last month. Hemophilia patients who did not experience recent bleeding had IL-6, CRP, and sIL-6Rα blood levels similar to healthy controls. We did not find increased IL-6 or acute-phase reactants in hemophilia patients with arthropathy or infectious disease. The role of IL-6 as a marker of bleeding in hemophilia was confirmed in hemophilia patients with acute bleeding events as well as in transgenic hemophilia mice after needle puncture of the knee, which exhibited an extensive hematoma and a 150-fold increase of IL-6 blood levels within 7 days of the injury compared to needle-punctured control mice. Notably, IL-6 blood levels shrunk to a fourfold elevation in hemophilia mice over controls after 28 days, when the hematoma was replaced by arthrofibrosis. These findings indicate that acute-phase reactants in combination with sIL-6Rα could be sensitive biomarkers for the detection of acute and recent bleeding events in hemophilia.
Extreme Sleep Spindles in Children with Autism Spectrum Disorder and Related Disorders—A Case Series
Authors: Kaku Sowmyashree Mayur , James Manjula William , Sarma Gosala R. K.
Published: April 2023

Extreme sleep spindles have fast activity and high amplitude, unlike normal sleep spindles. We report a case series of six children with autism and related disorders who had extreme spindles as noted on the sleep electroencephalogram recording at our center. We examine the types of extreme spindles, describe the clinical profiles of the 6 children, and discuss similar clinical and neurophysiological conditions.
How an Aggressive Treatment of No-reflow Phenomenon in Primary Percutaneous Coronary Intervention with High Thrombus Burden can Achieve a Grade III TIMI-flow: A Case Report
Authors: Martha Januar Wibawa , Putra Iwan Cahyo Santosa , Kamarullah William , Husink Aron , Sihite Teddy Arnold
Published: April 2023

Introduction The management of the no-reflow phenomenon is still being debated by experts as there is no specific algorithm, limited recommended drug choices, and insufficient data regarding the combination of drugs in currently available guidelines. Thus, in this case report, we would like to propose a new combination of drugs as an alternative to the recommended drugs of choice in the treatment of no-reflow phenomenon.

Case Presentation A 41-year-old man arrived at the emergency department complaining of chest pain 30 minutes prior to arrival. However, the patient was later diagnosed with extensive anterior ST-elevation myocardial infarction, KILLIP classification I, which was caused by the entire blockage of the proximal left anterior descending coronary artery. Angiography was conducted after stent placement during the main percutaneous coronary intervention and revealed grade I thrombolysis in myocardial infarction (TIMI)-flow with no coronary artery blockage. We then used an intracoronary approach to give nitroglycerin, heparin, and eptifibatide. The findings of posttreatment angiography revealed an improvement in coronary blood flow with a grade II TIMI flow. Furthermore, intravenous injection of eptifibatide and morphine effectively restored perfusion to a grade III TIMI flow.

Conclusion Aggressive and precise treatment with a drug of choice is required to counteract the no-reflow phenomenon. Presently, only a limited range of first-line medications are available to treat this condition. Not only that, but several of the prescribed medications are not easily accessible, especially in developing countries. Therefore, we offer a novel combination medicaments consisting of nitroglycerin, heparin, and glycoprotein IIb/IIIa inhibitor as an alternative treatment of the no-reflow phenomenon.
Minimized Hemodiafiltration for Extracorporeal Membrane Oxygenation in Infants
Authors: Kwapil Nicola , Teske Andreas , Dittrich Sven , Blumauer Robert , Cuomo Michela , Purbojo Ariawan , Münch Frank
Published: April 2023

Background Fluid overload is a serious complication in the treatment of infants with extracorporeal membrane oxygenation (ECMO). Volume overload leads to prolonged ECMO therapy if left untreated. The renal replacement therapy of choice in pediatric patients is peritoneal dialysis or conventional dialysis using a “large” hemofiltration machine via a Shaldon catheter or directly connected to the ECMO system. This study describes the implementation of a novel minimized hemodiafiltration (HDF) system in pediatric patients on ECMO.

Methods This retrospective analysis included 13 infants up to 5 kg who underwent 15 veno-arterial (V-A) ECMO runs with HDF. A minimized HDF system is integrated into an existing ECMO system (18 mL priming volume), connected post-oxygenation to the venous line, before the ECMO pump. Two infusion pumps are attached to the inlet and outlet of the hemofilter to control the HDF system.

In addition to retention values (creatine and urea) at six defined time points, flow rates, dialysis parameters, and volume withdrawal were examined, as well as the number of HDF system changes.

Results With a mean ECMO runtime of 156 hours, the HDF system was utilized for 131 hours. The mean blood flow through the hemofilter was 192 mL/min. The mean dialysate flow was 170 mL/h, with a mean volume deprivation of 39 mL/h. The HDF system was changed once in seven cases and twice in three cases.

Conclusion There were no complications with the minimized HDF system in all 15 applications. It allows safe patient volume management when treating infants with ECMO, with effective elimination of urinary substances.
Successful on-ECLS Repair of CDH and Omphalocele in a Newborn
Authors: Fideler Frank , Mustafi Migdad , Kirschner Hans-Joachim , Gerbig Ines , Fuchs Jörg , Hofbeck Michael , Kumpf Matthias , Kagan Oliver , Michel Jörg , Jost Walter , Neunhoeffer Felix
Published: April 2023

Both congenital diaphragmatic hernias (CDHs) and omphaloceles show relevant overall mortality rates as individual findings. The combination of the two has been described only sparsely in the literature and almost always with a fatal course. Here, we describe a term neonate with a rare high-risk constellation of left-sided CDH and a large omphalocele who was successfully treated on extracorporeal life support (ECLS). Prenatally, the patient was diagnosed with a large omphalocele and a left CDH with a lung volume of ∼27% and an observed to expected lung-to-head ratio of 30%. Due to respiratory insufficiency, an ECLS device was implanted. As weaning from ECLS was not foreseeable, the female infant underwent successful surgery on ECLS on the ninth day of life. Perioperative high-frequency oscillatory ventilation and circulatory and coagulation management under point-of-care monitoring were the main anesthesiological challenges. Over the following 3 days, ECLS weaning was successful, and the patient was extubated after another 43 days. Surgical treatment on ECLS can expand the spectrum of therapy in high-risk constellations if potential risks are minimized and there is close interdisciplinary cooperation.
Role of job mobility frequency in job satisfaction changes: the mediation mechanism of job-related social capital and person‒job match
Authors: Yang Hongbo , Hu Ping
Published: April 2023

Employees’ high job mobility is detrimental to the healthy and sustainable development of enterprises. It may be resolved by identifying the internal mechanism by which job mobility is associated with job satisfaction. However, few studies have examined it clearly. Thus, decision-making in human resource management lacks a theoretical basis. The present study attempts to fill this gap from the perspective of job-related social capital and person‒job match. Using survey data from 1348 employees with a tenure of 1–3 years in information service enterprises in China, this study conducts an empirical analysis of the aforementioned relationships. The results show that, in the context of the high frequency of job mobility, the ‘Honeymoon Effect’ has a positive association with job satisfaction in the short term. In the long term, the frequency of job mobility has a negative indirect association with job satisfaction through person‒job match and job-related social capital. Among these mediation mechanisms, job-related social capital has a positive association with person‒job match, which contributes to and strengthens the aforementioned negative intermediary process. The results highlight the positive role of job mobility frequency on job satisfaction in the short term and the negative role in the long term. The findings provide useful references and suggestions to help individuals improve their job satisfaction and enterprises to formulate efficient human resource management strategies.
Ergodicity of unlabeled dynamics of Dyson’s model in infinite dimensions
Authors: Osada Hirofumi , Osada Shota
Published: April 2023

Dyson’s model in infinite dimensions is a system of Brownian particles that interact via a logarithmic potential with an inverse temperature of β = 2. The stochastic process can be represented by the solution to an infinite-dimensional stochastic differential equation. The associated unlabeled dynamics (diffusion process) are given by the Dirichlet form with the sine2 point process as a reference measure. In a previous study, we proved that Dyson’s model in infinite dimensions is irreducible, but left the ergodicity of the unlabeled dynamics as an open problem. In this paper, we prove that the unlabeled dynamics of Dyson’s model in infinite dimensions are ergodic.
Mitigation of limit cycle oscillations in a turbulent thermoacoustic system via delayed acoustic self-feedback
Authors: Sahay Ankit , Kushwaha Abhishek , Pawar Samadhan A. , P. R. Midhun , Dhadphale Jayesh M. , Sujith R. I.
Published: April 2023

We report the occurrence of amplitude death (AD) of limit cycle oscillations in a bluff body stabilized turbulent combustor through delayed acoustic self-feedback. Such feedback control is achieved by coupling the acoustic field of the combustor to itself through a single coupling tube attached near the anti-node position of the acoustic standing wave. We observe that the amplitude and dominant frequency of the limit cycle oscillations gradually decrease as the length of the coupling tube is increased. Complete suppression (AD) of these oscillations is observed when the length of the coupling tube is nearly 3 / 8 times the wavelength of the fundamental acoustic mode of the combustor. Meanwhile, as we approach this state of amplitude death, the dynamical behavior of acoustic pressure changes from the state of limit cycle oscillations to low-amplitude chaotic oscillations via intermittency. We also study the change in the nature of the coupling between the unsteady flame dynamics and the acoustic field as the length of the coupling tube is increased. We find that the temporal synchrony between these oscillations changes from the state of synchronized periodicity to desynchronized aperiodicity through intermittent synchronization. Furthermore, we reveal that the application of delayed acoustic self-feedback with optimum feedback parameters completely disrupts the positive feedback loop between hydrodynamic, acoustic, and heat release rate fluctuations present in the combustor during thermoacoustic instability, thus mitigating instability. We anticipate this method to be a viable and cost-effective option to mitigate thermoacoustic oscillations in turbulent combustion systems used in practical propulsion and power systems.
The difference in microwave loss mechanism between nano- and micron-sized Ag particles
Authors: Yoshikawa Noboru , Kurokawa Taiki
Published: April 2023

Separated E/H-field heating in microwave cavities enables us to examine the microwave loss mechanisms. We prepared mixtures of SiO2 particles (having almost no microwave loss) and Ag particles with micrometer- and nano-sizes. Their average impedance and dielectric constants were measured. Electric conductivity exhibited percolation behavior at a specific threshold of Ag fraction. When the mixtures were heated in the separated fields, H-field heating was dominant in all the fraction ranges for the micrometer-sized Ag mixture. However, E-field heating was dominant below the percolation threshold for the nano-sized Ag mixture, and above the threshold, the H-field became dominant. This change in heating rates indicates the change in the energy loss mechanism. According to the size dependence of the induction current loss in a metallic sphere, the loss becomes less effective below the size of skin depth, namely, in the nano-size region. The permittivity of nano-sized Ag particles was estimated by an approximated Lindhard’s equation, which was input into the Maxwell–Garnett mixing model for predicting the effective complex permittivity of the mixture. It was possible to interpret the measured permittivity dependence on the Ag fraction.
White-light emission from yttrium iron garnet (YIG)
Authors: Saroha Anju , Ganapathi Kolla Lakshmi , Sadhasivam Murali , Pradeep Konda Gokuldoss , Ramachandra Rao Mamidanna Sri
Published: April 2023

Single-phase phosphors that emit broadband white-light are needed for white-light-emitting diodes (wLEDs) to reach their full potential. However, it is challenging to achieve broad white-light emission from single-phase materials. Consequently, polycrystalline inorganic bulk compounds that emit white-light sans doping are rare. We report on broadband white-light emission from a well-known garnet compound, i.e., yttrium iron garnet (YIG), without activator-ion doping. Upon near-UV excitation at 370 nm, polycrystalline bulk YIG emits broadband white-light with (1931) Commission Internationale de L’Eclairage (CIE) coordinates as (0.28, 0.35) and correlated color temperature (CCT) as 8029 K. Variable excitation wavelengths ranging from 280 to 600 nm enable color-tunable emission as cyan-white-blue-green-yellow-orange-red, including near-white-light emission for a broad range of excitation from 325 to 390 nm. Moreover, a short lifetime (sub-nanosecond) is obtained, which is desirable for LED and other applications. We demonstrated the propriety of YIG as a single-phase converting phosphor for illumination by fabricating prototype wLEDs using commercial InGaN UV-LED chips (λ = 380 nm) for excitation. The CIE coordinates and CCT of prototype wLEDs were obtained as (0.34, 0.37) and 5284 K, respectively. We believe that the reported findings signify the great potential of YIG as a single-phase white-light-emitting phosphor for broadband emission, which offers a new perspective and a viable approach for the development of wLEDs.
Effect of overlapping laser beams and density scale length in laser-plasma instability experiments on OMEGA EP
Authors: Rosenberg M. J. , Solodov A. A. , Myatt J. F. , Hironaka S. , Sivajeyan J. , Follett R. K. , Filkins T. , Maximov A. V. , Ren C. , Cao S. , Michel P. , Wei M. S. , Palastro J. P. , Scott R. H. H. , Glize K. , Regan S. P.
Published: April 2023

Experiments have been conducted on the OMEGA EP laser facility to study the effect of density scale length and overlapping beam geometry on laser-plasma instabilities near and below the quarter-critical density. Experiments were conducted in both planar geometry (density scale length L n ∼ 190 to 300 μm) and spherical geometry ( L n ∼ 150 μm) with up to four overlapping beams and were designed to have overlapped intensities and density scale lengths comparable to OMEGA spherical experiments, but with many fewer beams. In comparison with previous experiments on OMEGA and National Ignition Facility, it is confirmed that shorter density scale lengths favor the two-plasmon decay (TPD) instability, while longer density scale lengths favor stimulated Raman scattering (SRS). In addition, for experiments at the same scale length and overlapped laser intensity, higher single-beam intensities favor SRS, while a larger number of overlapping beams favor TPD.
On topology of the moduli space of gapped Hamiltonians for topological phases
Authors: Hsin Po-Shen , Wang Zhenghan
Published: April 2023

The moduli space of gapped Hamiltonians that are in the same topological phase is an intrinsic object that is associated with the topological order. The topology of these moduli spaces has been used recently in the construction of Floquet codes. We propose a systematical program to study the topology of these moduli spaces. In particular, we use effective field theory to study the cohomology classes of these spaces, which includes and generalizes the Berry phase. We discuss several applications for studying phase transitions. We show that a nontrivial family of gapped systems with the same topological order can protect isolated phase transitions in the phase diagram, and we argue that the phase transitions are characterized by screening of topological defects. We argue that the family of gapped systems obeys bulk-boundary correspondence. We show that a family of gapped systems in the bulk with the same topological order can rule out a family of gapped systems on the boundary with the topological order given by the topological boundary condition, constraining phase transitions on the boundary.
High-performance photodetector arrays for near-infrared spectral
sensing
Authors: van Klinken Anne , van Elst Don M. J. , Li Chenhui , Petruzzella Maurangelo , Hakkel Kaylee D. , Ou Fang , Pagliano Francesco , van Veldhoven René , Fiore Andrea
Published: April 2023

Spectral sensing is an emerging field driven by the need for fast and non-invasive methods for the chemical analysis of materials in agri-food, healthcare, and industrial applications. We demonstrate a near-infrared spectral sensor, based on a scalable fabrication process and combining high responsivity, narrow linewidth, and low noise. The sensor consists of 16 resonant-cavity-enhanced photodetectors, each showing a unique spectral response consisting of narrow peaks. The spectral sensor thereby covers the wavelength range between 890 and 1650 nm, where organic materials show relevant spectral features from first and second overtones. For the fabrication of the detector arrays, we propose a simple and scalable fabrication approach that yields largely improved device characteristics with respect to the grey-scale electron-beam lithography process reported earlier. Through a series of five optical lithography steps, tuning layers of silicon nitride are deposited stepwise to obtain 16 different thicknesses and reduced surface roughness. With this novel fabrication approach, the obtained photodetectors achieve an average peak linewidth of 55 nm, a maximum peak responsivity of 0.3 A/W, and high suppression of the non-resonant background. We also demonstrate the impact of these improvements on the sensing performance for two relevant problems through an experiment and a set of simulations. With lateral dimensions of ∼1.4 × 1.4 mm2, the proposed photodetector array can be the key to robust, portable, and low-cost sensing instrumentation for on-site material analysis in various application fields.