bluuebunny/crossref_metadata_2025_split huggingface dataset:
Scintillation properties of Yb-doped Bi4Ge3O12 single crystals emitting near-infrared luminescence
Authors: Okazaki Kai , Fukushima Hiroyuki , Nakauchi Daisuke , Kato Takumi , Kawaguchi Noriaki , Yanagida Takayuki 
Published: May 2022

Abstract
Yb-doped Bi4Ge3O12 (BGO) single crystals with different dopant concentrations were synthesized by the floating zone method, and the photoluminescence (PL) and scintillation properties in visible to near-infrared (NIR) wavelength ranges were evaluated. In PL and scintillation, a broad emission band was observed at 400–600 nm, which was ascribed to the electronic transitions of Bi3+. Furthermore, NIR emission bands due to Yb3+ were observed at 1000 nm. To evaluate scintillation detector properties, the relationship between emission intensity in the NIR range and X-ray exposure dose rate was investigated. Among the present samples, 0.5 and 1% Yb-doped BGO showed good linearity in the dynamic range from 0.006 to 60 Gy h−1.
Digital and analog resistive switching in NiO-based memristor by electrode engineering
Authors: S. P. Swathi , S. Angappane 
Published: May 2022

Abstract
An electroforming-free bipolar resistive switching (RS) is demonstrated in NiO-based memristors with different RS types, digital and analog. Au/NiO/Pt devices show the digital RS with low operating voltages (0.6/−0.7 V), large ON/OFF ratio (102), longer retention (103 s), and hence, are suitable for low power memory applications. On the other hand, Au/NiO/ITO devices exhibit analog RS with a lower operating current (∼μA), longer endurance (>102 cycles), and retention (103 s). Notably, one of the synaptic features, conductance modulation, is demonstrated in Au/NiO/ITO devices. The crystalline phases, microstructure, and defect density of sputtered NiO films depend on the nature of the bottom electrode, and thereby, the switching behavior can be tuned by electrode engineering. Unequivocally, the fabricated NiO-based memristors with multifunctional capability are found to be promising and pave the way for a new paradigm of fusion between information technology and bio-inspired computing.
Unveiling the analogies between the atomic switch and NMDA receptor-based signal transmission of biological synapse
Authors: Mahapatra Anwesha , Pradhan Itishree , Roy Dipanjan , Nayak Alpana 
Published: May 2022

Abstract
For the successful implication of brain-inspired computing using neuromorphic hardware, it is important to understand the detailed mechanisms of the biological brain. Here, we compare the atomic switch device with the N-methyl-D-aspartate receptor-based (NMDAR) signaling pathway which is the key to cognition in the human brain. An Ag/Ag2S/Pt gapless-type atomic switch configuration is realized using an atomic force microscope. The current responses to single and multiple voltage pulses of varied amplitude, width, and interval are studied to identify and control the conductance levels. This enables us to distinguish the sensory, short-term, and long-term memories along with the passive forgetting behavior and multilevel memory storage properties. Drawing a one-to-one comparison of these aspects of the atomic switch with the learning in the NMDAR pathway, we argue that the atomic switch has the potential not only as an edge-intelligent device but also as the missing link between biology and technology.
A facile reprecipitation method of Quantum-confined CsPbBr3 perovskite quantum dots for narrow-band deep-blue emission
Authors: Oshita Naoaki , Umemoto Kazuki , Sato Ryota , Kimura Taisei , Chiba Takayuki , Asakura Satoshi , Uji-i Hiroshi , Masuhara Akito 
Published: May 2022

Abstract
Quantum-confined cesium lead tribromide perovskite quantum dots (PeQDs) are attractive photonic sources for versatile optoelectronic devices and thus the synthetic routes have been explored via various techniques. However, the lack of a general method to fabricate the quantum-confined PeQD with remarkable stability at colloidal state has been one of the major obstacles to device applications. Herein, we propose a simple and robust ligand-assisted reprecipitation method associated with didodecyl dimethyl ammonium bromide for quantum-confined PeQDs with remarkable stability at colloidal state. This method will shed a light on the field of colloidal PeQDs synthesis for the next generation of photonic sources.
Microstructural analysis of N-polar InGaN directly grown on a ScAlMgO4(0001) substrate
Authors: Velazquez-Rizo Martin , Najmi Mohammed A. , Iida Daisuke , Kirilenko Pavel , Ohkawa Kazuhiro 
Published: May 2022

Abstract
We report the characterization of a N-polar InGaN layer deposited by metalorganic vapor-phase epitaxy on a ScAlMgO4(0001) (SAM) substrate without a low-temperature buffer layer. The InGaN layer was tensile-strained, and its stoichiometry corresponded to In0.13Ga0.87N. We also present the microstructural observation of the InGaN/SAM interface via integrated differential phase contrast-scanning transmission electron microscopy. The results show that the interface between N-polar InGaN and SAM occurs between the O atoms of the O–Sc SAM surface and the (Ga,In) atoms of InGaN.
Optical rectenna with wide wavelength coverage from a hollow resonator coupled with a metal–insulator–metal tunnel diode
Authors: Matsuura Daisuke , Shimizu Makoto , Liu Zhen , Yugami Hiroo 
Published: May 2022

Abstract
This study proposes an optical rectenna that combines a hollow resonator with a metal–insulator–metal (MIM) tunnel diode that is capable of photoelectric conversion (at various visible and infrared wavelengths). It enables the conversion of thermal radiation with different peak wavelengths, such as sunlight and thermal radiation (from heat sources in various temperature ranges), into electric power. The MIM tunnel diode was placed on the wall of a hollow resonator. It rectified the induced current generated by the resonance of the magnetic field. The photoelectric conversion capability of the proposed device applied to visible light is experimentally demonstrated in this study.
Assessment of the predictive potential of international Sovietology
Authors: Nazarenko M. B. 
Published: May 2022

Aim. The work aimed to review and analyze the opinions of international Sovietologists regarding the ways of the Soviet economy development of the late socialist period, as well as to identify problems of the prognostic potential of international Sovietology.Tasks. The work was performed to study scenarios for the development of the pre-perestroika Soviet economic model and problems in their prediction by international analysts.Methods. The object of study was the international historiography of the USSR economic history in the pre-perestroika period. The sources of information were official statistics and the works of international analysts. The authors of this article used general scientific research methods, as well as methods of historical and economic analysis.Results. An analysis of international studies shows that the hypothetical scenarios for the development of the Soviet Union put forward by Sovietologists before perestroika were based on prognosis of previous years, conflicting statistical data and scientific methods tested under the conditions of the capitalist economic model. Meanwhile, the Soviet planned socialist model represented a different type of economy, which had not previously been tried to be implemented on a national scale (the situation remains the same in the period considered). According to the position of international researchers, despite the low growth values of gross domestic product (GDP) per capita and the main leader of the economy, the industrial sector (taking into account the fall in oil revenues and stiffening of sanctions against the USSR in the early 1980s), the economy remained stable. Due to large margins of safety in the form of developed industry, agriculture, infrastructure, high scientific potential, and a huge stock of natural resources, the further existence of the USSR was not in doubt.Conclusion. Many Sovietologists have written about the need for fundamental changes in the Soviet planned economic system. At the same time, they took into account the significant difficulties and risks associated with possible reforms, believing that the consequences of the radical introduction of the market into the planned economy could be significant disturbances. This is one of the reasons why, in the pre-perestroika period, few Western analysts admitted the possibility of large-scale reforms in the near future.
Nursing Students’ Stigma on Mental Hospital Exposure: A Phenomenological Study
Authors: Balajadia Kathleen Jose G. , Carlos Christine C. , De la Cruz Dawnald Russel L. , Bingcang Angel Grace F. 
Published: May 2022

Exposure to mentally ill clients is challenging because of the fear attached to it. Oftentimes, the mentally ill are viewed as dangerous, unpredictable, and bizarre, which brings fear to other individuals, including health professionals. Professional care providers suffer from common fears and apprehension upon contact with the patient. Professional stigma, which refers to the nursing students’ fears towards exposure to mentally ill patients, was explored in this study. The study utilized a phenomenological research design. Semi-structured interviews were conducted among ten nursing students from a university in Cavite and triangulation of the data using interviews with clinical instructors and blockmates was employed. Thematic analysis was done using Colaizzi’s approach. Findings showed that mental illness was considered as a poor coping mechanism that results in mental dysfunction, disturbance of a normal pattern of thinking, and a point of struggle to adjust to the society for acceptance. Themes that emerged regarding fear before mental health exposure were fear of physical harm or violence, transference, and inadequacy in delivery of care. However, after exposure, the fears were observed to be minimal. Based on the findings of the study, it was recommended that schools of nursing which expose their students in the psychiatric ward must include briefing and debriefing of students. Clinical instructors should orient nursing students prior to exposure to the mental ward to desensitize them. In addition, emphasis on the importance of increasing awareness on how stigma affects society and the mentally ill must be given importance in order to provide efficient nursing care.
Development of a Pennywort (Centella asiatica) Ice Cream with Passion Fruit (Passiflora edulis)
Authors: Salas Michelle , Fonte Ethel Grace , Estrada Miriam , Laborde Gladys , Romero Cryslie , Balagtas Maribel 
Published: May 2022

Ice cream is a popular frozen dessert usually made of milk, cream, sugar, and flavoring. The goal of this study was to determine methods to enhance ice cream nutritionally through the addition of pennywort (Centella asiatica) and passion fruit (Passiflora edulis) extract. Pennywort is a nutritious leaf but not commonly utilized as food. The development of the product through laboratory experiments. The standardized ingredients and procedures were determined after five trial formulations. The pennywort leaf was dehydrated using the Multi-Commodity Heat Pump Dryer and ground using a food processor. Coconut milk was first chilled then mixed with soya milk from fresh soybeans. Sugar, vanilla, salt, pennywort and passion fruit extract were mixed using a blender. The mixture was poured into a plastic cup and frozen for 24 hours. The pennywort ice cream with passion fruit containeds 177 kcal per serving (125 ml). Each serving contained 33g of carbohydrates, 5g of protein, 2.8 g of fat, 88mg of calcium, 85mg of phosphorus, 1.1 mg of niacin, 0.9 mg of iron, 0.04 mg of thiamine, and 0.03 mg of riboflavin. The cost of one serving was ₱17. The product was evaluated by 30 individuals from both genders and was rated by the majority as like extremely in terms of odor, color, appearance, texture. Its taste was rated as like very much. This study showed that utilizing pennywort and passion fruit to enhance the taste and nutrient content of ice cream is possible.
Marginal Sealing Property of Temporary Restorative Materials: A Comparative Study
Authors: Padua Ana Rose , Perez Roderick , Medina III Vicente 
Published: May 2022

This study compared the marginal sealing property Provifil (Promedica, Germany), a new light-cured one-component temporary filling material with IRM (Dentsply-Caulk) and Cavit (3M ESPE). Standard box-shaped cavity preparations were completed in 40 caries-free anterior bovine teeth. The teeth were randomly assigned to 4 groups (n = 10) and were filled with one of the three restorative materials. In five teeth (Positive control), no restorative material was placed; while five teeth of the negative control group had no restorative material but were filled with sticky wax. After thermocycling in water baths with temperatures of 5±5°C and 55±5°C (dwell time, 30 seconds) for 200 cycles, the teeth were coated with nail varnish, leaving an area of 1 mm short of the cavity margin uncovered. The samples were immersed in 2% Methylene blue dye solution for 10 days, sectioned and then digital pictures were taken. Dye penetration along the walls was measured using the UTHSCA Image Tool software. The greatest depth of dye penetration was considered the score of the specimen. Data was analyzed using One-way ANOVA (p < 0.05) and Tukey’s HSD Post Hoc Test. Results showed that all the materials tested leaked at the tooth-restorative material interface. Provifil had the lowest mean leakage value (1.609 mm) while Cavit had the next lowest (2.028 mm). IRM demonstrated significant leakage values (4.587 mm) signifying complete dye penetration on all the samples. There was no statistical significant difference between the marginal sealing property of Cavit and Provifil (p>0.05). The marginal sealing property of Provifil was better than that of IRM.
The mimetic of the brain neurotrophic factor GSB-106 has neuroprotective and neuroregenerative effects in experimental ischemic stroke
Authors: Povarnina P. Yu. , Antipova T. A. , Logvinov I. O. , Nikiforov D. M. 
Published: May 2022

Background. A dimeric dipeptide mimetic of the brain-derived neurotrophic factor loop 4, bis(N-monosuccinyl-L-seryl-L-lysine) hexamethylenediamide (GSB-106), which activates TrkB, PI3K/AKT, MAPK/ERK and PLC-γ1 was created at the V. V. Zakusov Research Institute of Pharmacology. GSB-106 showed neuroprotective activity in vitro and in vivo at systemic administration. Objective. In the present study, we studied the effect of GSB-106 on the brain infarct volume, as well as on neurogenesis and synaptogenesis under conditions of experimental ischemic stroke induced by transient occlusion of the middle cerebral artery in rats, when it was first administered 24 h after ischemia onset. Methods. Dipeptide GSB-106 was administered i.p. in a dose of 0.1 mg/kg 24 h after surgery and then once a day, with the end of administration on theday 6 after surgery. On the day 7 brain samples were collected for morphometric and biochemical (Western-blot) analysis. Results. It was established that GSB-106 reduced the brain damage volume by 24%, restores impaired neurogenesis and/or gliogenesis (by Ki-67) in the hippocampus and in the striatum and completely restored the reduced immunoreactivity to synaptic markers synaptophysin and PSD-95 in the striatum. Conclusions. Thus, the dimeric dipeptide BDNF mimetic GSB-106 exhibits neuroregenerative properties at clinically relevant time window (24 h) in a model of ischemic stroke presumably due to stimulation of neurogenesis (and / or gliogenesis) and synaptogenesis.
Bioequivalence study of fixed-dose combination Losartan + amlodipine + rosuvastatin Sanofi in comparison with coadministered fixed- dose combination Lozap® AM and monocomponent drug Crestor® in healthy subjects
Authors: Khokhlov A. L. , Grebenkin D. Yu. , Faeva E. K. , Kazey V. I. , Khokhlov A. A. , Miroshnikov A. E. , Lebedeva O. V. 
Published: May 2022

Introduction. The advantages of fixed-dose combination losartan + amlodipine + rosuvastatin compared to mono-drugs and two-component combinations are to increase the therapeutic efficacy, to reduce the cost of the product and to make the drug easier to take which helps to improve patient adherence to therapy. A bioequivalence study of the three-component fixed-dose combinations Losartan + amlodipine + rosuvastatin Sanofi with coadministered Lozap® AM (Losartan+Amlodipine) and Crestor® (Rosuvastatin) was conducted. Aim. The purpose of the bioequivalence trial was a comparative study of the pharmacokinetics and evidence of the bioequivalence of two strengths of fixed-dose combination: 1) Losartan + amlodipine + rosuvastatin Sanofi (tablets, 50 mg + 5 mg + 10 mg) in comparison with coadministrated drugs Lozap® AM (losartan + amlodipine, tablets, 50 mg + 5 mg,) and Crestor® (rosuvastatin, tablets, 10 mg) in fasting healthy volunteers after a single administration; 2) Losartan + amlodipine + rosuvastatin Sanofi (tablets, 100 mg + 5 mg + 20 mg) in comparison with coadministrated drugs Lozap® AM (losartan + amlodipine, tablets, 100 mg + 5 mg) and Crestor® (rosuvastatin, tablets, 20 mg) in fasting healthy volunteers 18–45 years old after a single dose. Materials and methods. To prove bioequivalence, an open label, comparative, randomized, crossover four-period clinical trial was conducted for each strengths of fixed-dose combination. The concentrations of losartan, amlodipine and rosuvastatin in blood plasma samples obtained from volunteers were determined by a validated HPLC-MS/MS method. A pharmacokinetic and statistical analysis was performed and confidence intervals (CI) for the pharmacokinetic parameters Сmax, AUC0-72 (for amlodipine) and AUC0-t (for losartan and rosuvastatin) were calculated. Results and discussion. Based on the results of statistical and pharmacokinetic analysis, it was shown that the studied formulations are bioequivalent in terms of pharmacokinetic parameters of losartan, amlodipine and rosuvastatin. 90 % CI were in the acceptable range for Сmax (of amlodipine), AUC0-72 (of amlodipine) and AUC0-t (of losartan and rosuvastatin). 90 % CI for Сmax of losartan and rosuvastatin were in the acceptable extended calculated range according to the protocol. Conclusion. Thus, according to the criteria used in the studies, the three-component fixed-dose combinations Losartan + amlodipine + rosuvastatin Sanofi are proved to be bioequivalent in comparison with coadministered Lozap® AM and Crestor®.
Технология ROSI: микроинъекция гаплоидных круглых сперматид
Authors: Магауия А.Н. , Жумадил Х.Б. , Бекбосынова Г.Р. , Бегайдарова А.Б. 
Published: May 2022

Актуальность: У большинства мужчин с азооспермией при Micro-TESE отсутствуют зрелые сперматозоиды, но обнаруживаются гаплоидные круглые сперматиды, которые можно ввести в ооциты, что приводит к оплодотворению.
Цель: анализ научных работ по методу инъекции ооцитов круглыми сперматидами (Round spermatid injection, ROSI) и развития технологии ROSI.
Методы: Научные статьи отбирались путем поиска по ключевым словам в медицинских базах данных PUBMED, MEDLINE и EMBASE. Поиск осуществлялся по терминам “round spermatid injection” и “ROSI”.
Результаты: В статье рассмотрены несколько как успешных, так и нерезультативных исследований с применением технологии ROSI.
Заключение: Наш обзор позволяет сделать заключение, что технология ROSI является последним шансом для мужчин с необструктивной азооспермией, которые хотят использовать свой генетический материал, чтобы произвести потомство.
EMPRESS. VII. Ionizing Spectrum Shapes of Extremely Metal-poor Galaxies: Uncovering the Origins of Strong He ii and the Impact on Cosmic Reionization
Authors: Umeda Hiroya , Ouchi Masami , Nakajima Kimihiko , Isobe Yuki , Aoyama Shohei , Harikane Yuichi , Ono Yoshiaki , Matsumoto Akinori 
Published: May 2022

Abstract
Strong high-ionization lines such as He ii of young galaxies are puzzling at high and low redshift. Although recent studies suggest the existence of nonthermal sources, whether their ionizing spectra can consistently explain multiple major emission lines remains a question. Here we derive the general shapes of the ionizing spectra for three local extremely metal-poor galaxies (EMPGs) that show strong He ii
λ4686. We parameterize the ionizing spectra composed of a blackbody and power-law radiation mimicking various stellar and nonthermal sources. We use photoionization models for nebulae and determine seven parameters of the ionizing spectra and nebulae by Markov Chain Monte Carlo methods, carefully avoiding systematics of abundance ratios. We obtain the general shapes of ionizing spectra explaining ∼10 major emission lines within observational errors with smooth connections from observed X-ray and optical continua. We find that an ionizing spectrum of one EMPG has a blackbody-dominated shape, while the others have convex downward shapes at >13.6 eV, which indicate a diversity of the ionizing spectrum shapes. We confirm that the convex downward shapes are fundamentally different from ordinary stellar spectrum shapes, and that the spectrum shapes of these galaxies are generally explained by the combination of the stellar and ultraluminous X-ray sources. Comparisons with stellar synthesis models suggest that the diversity of the spectrum shapes arises from differences in the stellar age. If galaxies at z ≳ 6 are similar to the EMPGs, high-energy (>54.4 eV) photons of the nonstellar sources negligibly contribute to cosmic reionization due to relatively weak radiation.
Kiloparsec-scale Imaging of the CO(1-0)-traced Cold Molecular Gas Reservoir in a z ∼ 3.4 Submillimeter Galaxy
Authors: Frias Castillo Marta , Rybak Matus , Hodge Jacqueline , van der Werf Paul , Riechers Dominik A. , Vieira Daniel , Calistro Rivera Gabriela , Martínez-Ramírez Laura N. , Walter Fabian , de Blok Erwin , Narayanan Desika , Wagg Jeff 
Published: May 2022

Abstract
We present a high-resolution study of the cold molecular gas as traced by CO(1-0) in the unlensed z ∼ 3.4 submillimeter galaxy SMM J13120+4242, using multiconfiguration observations with the Karl G. Jansky Very Large Array (JVLA). The gas reservoir, imaged on 0.″39 (∼3 kpc) scales, is resolved into two components separated by ∼11 kpc with a total extent of 16 ± 3 kpc. Despite the large spatial extent of the reservoir, the observations show a CO(1-0) FWHM linewidth of only 267 ± 64 km s−1. We derive a revised line luminosity of

L

CO
(
1
−
0
)

′

= (10 ± 3) × 1010 K km s−1 pc2 and a molecular gas mass of M
gas = (13 ± 3)× 1010 (α
CO/1) M
⊙. Despite the presence of a velocity gradient (consistent with previous resolved CO(6-5) imaging), the CO(1-0) imaging shows evidence for significant turbulent motions that are preventing the gas from fully settling into a disk. The system likely represents a merger in an advanced stage. Although the dynamical mass is highly uncertain, we use it to place an upper limit on the CO-to-H2 mass conversion factor α
CO of 1.4. We revisit the SED fitting, finding that this galaxy lies on the very massive end of the main sequence at z = 3.4. Based on the low gas fraction, short gas depletion time, and evidence for a central AGN, we propose that SMM J13120 is in a rapid transitional phase between a merger-driven starburst and an unobscured quasar. The case of SMM J13120 highlights how mergers may drive important physical changes in galaxies without pushing them off the main sequence.