bluuebunny/crossref_metadata_2025 huggingface dataset:
Optomechanics and quantum phase of the Bose-Einstein condensate with the cavity mediated spin-orbit coupling
Authors: Zhang Peng , Tang Pengju , Pan Ruizhi , Chen Xuzong , Zhou Xiaoji , Zhang Shougang
Published: February 2023

We investigated the optomechanical dynamics and explored the quantum phase of a Bose-Einstein condensate in a ring cavity. The interaction between the atoms and the cavity field in the running wave mode induces a semiquantized spin-orbit coupling (SOC) for the atoms. We found that the evolution of the magnetic excitations of the matter field resembles that of an optomechanical oscillator moving in a viscous optical medium, with very good integrability and traceability, regardless of the atomic interaction. Moreover, the light-atom coupling induces a sign-changeable long-range interatomic interaction, which reshapes the typical energy spectrum of the system in a drastic manner. As a result, a new quantum phase featuring a high quantum degeneracy was found in the transitional area for SOC. Our scheme is immediately realizable and the results are measurable in experiments.
Understanding the conditions for the optimum nonlinear refraction of epsilon-near-zero films based on transparent conducting oxides
Authors: Ghobadi Hosein , Offerhaus Herman L. , Alvarez-Chavez Jose A. , Morales-Masis Monica , De Leon Israel
Published: February 2023

Transparent Conducting Oxides (TCOs) exhibit a large and ultrafast intensity-dependent refractive index in their Epsilon-Near-Zero (ENZ) spectral region, which depends dramatically on the material properties and measurement arrangement conditions. Therefore, attempts to optimize the nonlinear response of ENZ TCOs usually involve extensive nonlinear optical measurements. In this work, we show that significant experimental work can be avoided by carrying out an analysis of the material’s linear optical response. The analysis accounts for the impact of thickness-dependent material parameters on the absorption and field intensity enhancement under different measurement conditions and estimates the incidence angle required for achieving the maximum nonlinear response for a given TCO film. We perform measurements of angle-dependent and intensity-dependent nonlinear transmittance for Indium-Zirconium Oxide (IZrO) thin films with different thicknesses and demonstrate a good agreement between the experiment and theory. Our results also indicate that the film thickness and the excitation angle of incidence can be adjusted simultaneously to optimize the nonlinear optical response, allowing a flexible design of TCO-based highly nonlinear optical devices.
High-precision data acquisition for free-space continuous-variable quantum key distribution
Authors: Wei Shurong , Huang Peng , Wang Shiyu , Wang Tao , Zeng Guihua
Published: February 2023

Data acquisition in a continuous-variable quantum key distribution (CV-QKD) system is a necessary step to obtain secure secret keys. And the known data acquisition methods are commonly based on the assumption that the channel transmittance is constant. However, the channel transmittance in free-space CV-QKD fluctuates during the transmission of quantum signals, and the original methods are not applicable in this scenario. In this paper, we propose a data acquisition scheme based on the dual analog-to-digital converter (ADC). In this scheme, two ADCs with the same sampling frequency as the pulse repetition rate of the system and a dynamic delay module (DDM), which are used to construct a high-precision data acquisition system, eliminate the effect of transmittance fluctuation by a simple division operation of the data from the two ADCs. Simulation and proof-of-principle experimental results show that the scheme is effective for free-space channels and can achieve high-precision data acquisition under the condition of fluctuation of channel transmittance and very low signal-to-noise ratio (SNR). Furthermore, we introduce the direct application scenarios of the proposed scheme for free-space CV-QKD system and verify their feasibilities. This method is of great significance to promote the experimental realization and practical application of free-space CV-QKD.
Three-dimensional on-chip mode converter
Authors: Li Ze-Zheng , Ouyang Yang , Li Zhong-Tian , Tian Zhen-Nan , Zhang Xu-Lin , Chen Qi-Dai , Sun Hong-Bo
Published: February 2023

The implementation of transverse mode, polarization, frequency, and other degrees of freedom (d.o.f.s) of photons is an important way to improve the capability of photonic circuits. Here, a three-dimensional (3D) linear polarized (LP) LP11 mode converter was designed and fabricated using a femtosecond laser direct writing (FsLDW) technique. The converter included multi-mode waveguides, symmetric Y splitters, and phase delaying waveguides, which were constructed as different numbers and arrangements of circular cross section waveguides. Finally, the modes (LP11a and LP11b) were generated on-chip with a relatively low insertion loss (IL). The mode converter lays a foundation for on-chip high-order mode generation and conversion between different modes, and will play a significant role in mode coding and decoding of 3D photonic circuits.
PCCA-Model: An Attention Module for Medical Image Segmentation
Authors: Liu Linjie , Wang Guanglei , Wu Yanlin , Wang Hongrui , Li Yan
Published: February 2023

Convolutional neural networks have been increasingly employed in the field of medical image segmentation. Based on this idea that the human visual cortex differs in terms of the size of the receptive field and can sense the stimulus location., we proposed the pyramid channel coordinate attention (PCCA) module to fuse multiscale features in the channel direction, aggregate local and global channel information, combine them with the location information in the spatial direction, and then integrate them into the existing semantic segmentation network. We conducted numerous experiments on the datasets, namely LiTS, ISIC-2018, and CX, and obtained state-of-the-art results.
An electro-optically tunable optical delay line with a continuous tuning range of ~220 fs in thin-film lithium niobate
Authors: Song LvBin , Chen Jinming , Wu Rongbo , Zheng Yong , liu zhaoxiang , Wang Guanhua , Sun Chao , Wang Min , Cheng Ya
Published: February 2023

We demonstrate fabrication of a 30-cm-long thin-film lithium niobate (TFLN) optical delay line (ODL) incorporated with segmented microelectrodes of 24-cm total length using femtosecond laser lithography technique. The transmission spectra of the unbalanced Mach-Zehnder interferometers (MZIs) reveal an ultra-low propagation loss of 0.025 dB/cm. The device exhibits a low half-wave voltage of 0.45 V, corresponding to a voltage-length product of 5.4 V·cm in the push-pull configuration. We also demonstrate a high electro-optic (EO) tuning efficiency of 3.18 fs/V in the fabricated ODL.
Temporal Non-Uniform Compressive Sampling for Dynamic Optical Coherence Tomography
Authors: Oldenburg Amy , Ji Pan , Yu Xiao , Yang Lin
Published: February 2023

Optical coherence tomography (OCT) has great utility for capturing dynamic processes, but such applications are particularly data intensive. Samples such as biological tissues exhibit temporal features at varying time scales, which makes data reduction challenging. Here we propose a method for capturing short- and long-time correlations of a sample using temporally compressive sampling to reduce scan time and memory overhead. The proposed method involves non-uniform sampling in time to separate the relative contributions of white noise, fluctuating features, and stationary features. This approach is demonstrated on mammary epithelial cell spheroids in 3D culture for capturing intracellular motility without loss of signal integrity. Results show that the spatial patterns of motility are preserved and that hypothesis tests of spheroids treated with blebbistatin, a motor protein inhibitor, are unchanged with up to 8-fold compression. In broader contexts, the ability to measure short- and long-time correlations compressively will enable new applications in (3+1)D imaging and high-throughput screening.
A carbon tax by any other name: Public benefit funds in the American states
Authors: Prasad Monica
Published: February 2023

Although there is substantial opposition to carbon taxation in the United States, a form of carbon tax is already in place in many jurisdictions. Twenty-two American states plus Puerto Rico and the District of Columbia have implemented a policy called the “public benefit fund,” in which utility companies add a charge per kilowatt-hour of energy consumed to the electricity bills of individuals and firms. Public benefit funds are monetary charges for energy usage, and are in several respects similar to carbon taxes. This paper gives an overview of the introduction of public benefit funds in the American states and their current extent, considers their similarities to and differences from carbon taxes, discusses several studies showing that they do have an impact on reduction of carbon emissions, and suggests that expansion or intensification of public benefit funds could be a path to lower emissions for the country.
Sr analyses from only known Scandinavian cremation cemetery in Britain illuminate early Viking journey with horse and dog across the North Sea
Authors: Löffelmann Tessi , Snoeck Christophe , Richards Julian D. , Johnson Lucie J. , Claeys Philippe , Montgomery Janet
Published: February 2023

The barrow cemetery at Heath Wood, Derbyshire, is the only known Viking cremation cemetery in the British Isles. It dates to the late ninth century and is associated with the over-wintering of the Viking Great Army at nearby Repton in AD 873–4. Only the cremated remains of three humans and of a few animals are still available for research. Using strontium content and isotope ratios of these three people and three animals–a horse, a dog and a possible pig–this paper investigates the individuals’ residential origins. The results demonstrate that strontium isotope ratios of one of the adults and the non-adult are compatible with a local origin, while the other adult and all three animals are not. In conjunction with the archaeological context, the strontium isotope ratios indicate that these individuals most likely originated from the area of the Baltic Shield–and that they died soon after arrival in Britain. This discovery constitutes the first solid scientific evidence that Scandinavians crossed the North Sea with horses, dogs and other animals as early as the ninth century AD.
Reshaping the full body illusion through visuo-electro-tactile sensations
Authors: Preatoni Greta , Dell’Eva Francesca , Valle Giacomo , Pedrocchi Alessandra , Raspopovic Stanisa
Published: February 2023

The physical boundaries of our body do not define what we perceive as self. This malleable representation arises from the neural integration of sensory information coming from the environment. Manipulating the visual and haptic cues produces changes in body perception, inducing the Full Body Illusion (FBI), a vastly used approach to exploring humans’ perception. After pioneering FBI demonstrations, issues arose regarding its setup, using experimenter-based touch and pre-recorded videos. Moreover, its outcome measures are based mainly on subjective reports, leading to biased results, or on heterogeneous objective ones giving poor consensus on their validity. To address these limitations, we developed and tested a multisensory platform allowing highly controlled experimental conditions, thanks to the leveraged use of innovative technologies: Virtual Reality (VR) and Transcutaneous Electrical Nerve Stimulation (TENS). This enabled a high spatial and temporal precision of the visual and haptic cues, efficiently eliciting FBI. While it matched the classic approach in subjective measures, our setup resulted also in significant results for all objective measurements. Importantly, FBI was elicited when all 4 limbs were multimodally stimulated but also in a single limb condition. Our results behoove the adoption of a comprehensive set of measures, introducing a new neuroscientific platform to investigate body representations.
COVIDScholar: An automated COVID-19 research aggregation and analysis platform
Authors: Dagdelen John , Trewartha Amalie , Huo Haoyan , Fei Yuxing , He Tanjin , Cruse Kevin , Wang Zheren , Subramanian Akshay , Justus Benjamin , Ceder Gerbrand , Persson Kristin A.
Published: February 2023

The ongoing COVID-19 pandemic produced far-reaching effects throughout society, and science is no exception. The scale, speed, and breadth of the scientific community’s COVID-19 response lead to the emergence of new research at the remarkable rate of more than 250 papers published per day. This posed a challenge for the scientific community as traditional methods of engagement with the literature were strained by the volume of new research being produced. Meanwhile, the urgency of response lead to an increasingly prominent role for preprint servers and a diffusion of relevant research through many channels simultaneously. These factors created a need for new tools to change the way scientific literature is organized and found by researchers. With this challenge in mind, we present an overview of COVIDScholarhttps://covidscholar.org, an automated knowledge portal which utilizes natural language processing (NLP) that was built to meet these urgent needs. The search interface for this corpus of more than 260,000 research articles, patents, and clinical trials served more than 33,000 users at an average of 2,000 monthly active users and a peak of more than 8,600 weekly active users in the summer of 2020. Additionally, we include an analysis of trends in COVID-19 research over the course of the pandemic with a particular focus on the first 10 months, which represents a unique period of rapid worldwide shift in scientific attention.
Determining the influence of LPI, GCI and IR on FDI: A study on the Asia and Pacific Region
Authors: Wannisinghe Pasindu , Jayakody Sanjula , Rathnayake Sashini , Wijayasinghe Deshani , Jayathilaka Ruwan , Madhavika Naduni
Published: February 2023

This study examines the impact of the Logistics Performance Index (LPI), Global Competitiveness Index (GCI) and Interest Rates (IR) on Foreign Direct Investment (FDI) for the Asia & Pacific region. The study is original as extensive evidence on the impact of LPI, GCI and IR on FDI in the Asia & Pacific region are examined initially. For the years 2007, 2010, 2012, 2014, 2016 and 2018, data was gathered for 33 nations in the Asia and Pacific area. Data analysis was performed using a panel regression model and multiple linear regression. The findings of the study reveal that LPI, GCI and IR are the three major factors influencing FDI inflows into the economies. However, the impact of these factors varies from country to country. The results concluded that LPI positively impacts FDI in India, Korea, Lebanon, and Oman. In contrast, a negative influence was observed for China, Kuwait and the Philippines. GCI positively impacts FDI in China, Korea, Kuwait, Pakistan and the Philippines, while a negative impact was observed in Armenia, India, Lebanon. Furthermore, IR has a positive impact on FDI flows in China and Egypt while in Korea and Lebanon, a negative impact was observed. Therefore, policymakers should focus more on improving the infrastructural requirements and macroeconomic factors while considering the other country-level variables that influence the FDI in flow.
Religiosas y el aggiornamento conciliar en España: hacia una renovación identitaria (1962-1965)
Authors: García Martín Verónica
Published: February 2023

El objetivo de este artículo es profundizar en el aggiornamento del Vaticano II durante el franquismo. Especialmente, el foco de interés se centra en las religiosas y el giro identitario que asumieron tras la llamada eclesiástica a la modernización. De esta manera, durante los años conciliares, se percibe cómo el arquetipo monjil del nacionalcatolicismo comienza a convivir con otro impulsado desde el Vaticano II, más abierto y en consonancia con la nueva doctrina conciliar sobre las mujeres y la vida consagrada. Se entrecruzarán, por tanto, las categorías de modernidad, género y religión para un acercamiento a la complejidad de este proceso.
DEBATES TEÓRICOS SOBRE SEXUALIDAD DESDE LAS NARRATIVAS DOCENTES EN LA FORMACIÓN INICIAL
Authors: Franco Maria Teresa Bejarano , Martínez Martín Irene
Published: February 2023

Este trabajo expone la narrativa como propuesta metodológica de acción transformadora en la formación inicial de docentes en torno a las diversidades sexuales. El objetivo planteado es: conocer cómo narramos en las prácticas educativas para poder enseñar y aprender desde las vivencias cotidianas que configuran las vivencias en torno a las sexualidades. Describimos la propuesta metodológica a partir de los principios teóricos de esta metodología, luego presentamos tres beneficios para la docencia universitaria: sistematizar las experiencias docentes, aplicar la pedagogía situada y favorecer las narrativas corporales. Finalmente, exponemos experiencias generadas en proyectos innovadores como propuestas de acción pedagógica siendo representativas de los beneficios propuestos en torno al método narrativo. Se concluye, en base a las experiencias,
PENSANDO UM CURRÍCULO ESCOLAR QUEER MESTIÇO: AS CONTRIBUIÇÕES DA TEORIA QUEER ARTICULADA A METODOLOGIA INTERSECCIONAL
Authors: Carvalho Rubem Viana  de , Silva Luiz Felipe de Oliveira , Lage Allene Carvalho
Published: February 2023

Neste trabalho refletimos sobre as contribuições da teoria queer articulada à metodologia interseccional como possibilidade de pensarmos outros currículos escolares que sejam comprometidos com o questionamento e enfrentamento à normatividade, cisheteronormatividade, ao racismo e as LGBTfobias, ou seja, currículos múltiplos e não únicos. Para tanto, levantamos a seguinte questão: como a teoria queer pensada a partir de uma metodologia interseccional pode contribuir para pensarmos currículos escolares antirracistas e anti-LGBTfóbicos comprometidos com a multiplicidade? Para nos ajudar a compreender essas relações utilizamos como referencial teórico ideias de Foucault (1988), Butler (2003), Scott (1975), Rubin (2017), Louro (2001), Miskolci (2017) e Borba (2020), além de autores/as como Crenshaw (2002) e Oliveira e Sabino (2020), propondo implementações à teoria queer a partir da proposição da necessidade de articular às categorias de gênero e sexualidades, a categorias como raça e classe para pensarmos as singularidades do Brasil e da América Latina. Enquanto metodologia a análise é qualitativa feita a partir de uma revisão bibliográfica de caráter exploratória. Enquanto procedimento de análise utilizamos a perspectiva de análise de conteúdo de Bardin (1977).  As conclusões apontam que pensar o currículo escolar a partir de uma perspectiva queer mestiça dentro de uma pluralidade geocultural pode contribuir para a criação de currículos mais próximos as diferenças, assim como com a formação de identidades abertas, que podem desafiar preconceitos como o racismo e as LGBTfobias, questionando os modelos hegemônicos e propondo alternativas criativas a partir da torção das opressões.
Designing of traction motor stators core
Authors: Zubkov Yuri V. , Vereshagin Vladislav E.
Published: February 2023

Electric drive is widely used in automotive practice. Its basis is an electric traction motor (TM), which, compared with an internal combustion engine (ICE), has such advantages as high efficiency, high overload capacity, a wide range of speed control, and the possibility of torque direct transmission to the drive wheels. The main requirements for a traction motor are high efficiency over the entire load range, ease of speed and torque control, high overload capacity, small weight and dimensions, regenerative braking capability, wide speed control range, simplicity and ease of maintenance. The most widely used as traction motors are synchronous electric machines with excitation from permanent magnets (PM). They are characterized by high torque density, efficiency and power consistency over a wide speed range. However, there are a number of problems that hinder the introduction of these electric machines in the traction drive of home cars, one of which is the lack of a methodology for choosing the design of an armature and an inductor at the stage of calculating the main dimensions of an TM with magnetoelectric excitation, taking into account the variety of schemes and methods of winding, PM placement in the inductor. The article deals with the issues of choosing electromagnetic loads for various cooling methods, the size of the non-magnetic gap, an algorithm for electromagnetic calculation based on the maximum torque, containing a number of refining cycles, is proposed. The values of inductances and design factors are determined by numerical simulation of the magnetic field. The features of the design and circuit design of the core and armature winding are considered. Distribution curves of magnetomotive forces of distributed and concentrated windings are obtained, their harmonic analysis is made, recommendations are given on the configuration of the TD armature active zone.
On projections of free semialgebraic sets
Authors: Drescher Tom , Netzer Tim , Thom Andreas
Published: February 2023

We examine to what extent a projection theorem is possible in the non-commutative (free) setting. We first review and extend some results that count against a full free projection theorem. We then obtain a weak version of the projection theorem: projections along linear and separated variables yield semialgebraically parametrised free semi-algebraic sets.
Multiple ECG segments denoising autoencoder model
Authors: Samann Fars , Schanze Thomas
Published: February 2023

Objectives

Denoising autoencoder (DAE) with a single hidden layer of neurons can recode a signal, i.e., converting the original signal into a noise-reduced signal. The DAE approach has shown a good performance in denoising bio-signals, like electrocardiograms (ECG). In this paper, we study the effect of correlated, uncorrelated and jittered datasets on the performance of the DAE model.

Methods

Vectors of multiple concatenated ECG segments of simultaneously recorded Einthoven recordings I, II, III are considered to establish the following dataset cases: (1) correlated, (2) uncorrelated, and (3) jittered. We consider our previous work in finding the optimal number of hidden neurons receiving the input signal with respect to signal quality and computational burden by applying Akaike’s information criterion. To evaluate DAE, these datasets are corrupted with six types of noise, namely mix noise (MX), motion artifact noise (MA), electrode movement (EM), baseline wander (BW), Gaussian white noise (GWN) and high-frequency noise (HFN), to simulate real case scenario. Spectral analysis is used to study the effects of noise whose power spectrum may overlap with the power spectrum of the wanted signal on DAE performance.

Results

The simulation results show (a) that the number of hidden neurons to denoise multiple correlated ECG is much lower than for jittered signals, (b) QRS-complex based ECG alignment preferable, (c) noises with slightly overlapping power spectrum, like BW and HFN, can be easily removed with sufficient number of neurons, while the noise with completely overlapping spectrum, like GWN, requires a very low-dimensional and thus coarser reduction to recover the signal.

Conclusions

The performance of DAE model in terms of signal-to-noise ratio improvement and the required number of hidden neurons can be improved by utilizing the correlation among simultaneous Einthoven I, II, III records.
Assessment of humoral and cellular immunity after bivalent BNT162b2 vaccination and potential association with reactogenicity
Authors: Salvagno Gian Luca , Pighi Laura , Henry Brandon M. , Valentini Myriam , Tonin Beatrice , Bragantini Damiano , Gianfilippi Gianluca , De Nitto Simone , Plebani Mario , Lippi Giuseppe
Published: February 2023

Objectives

This study investigated the feasibility and clinical value of using a novel, automated and high-throughput SARS-CoV-2 Interferon Gamma Release Assay (IGRA), combined with total anti-SARS-CoV-2 antibodies assessment, for evaluating the immune response after bivalent BNT162b2 vaccination.

Methods

A cohort of healthcare workers, who already underwent primary vaccination and boosting with monovalent BNT162b2 vaccine, received a booster dose of the new BNT162b2 bivalent formulation. Blood samples were taken immediately before vaccination (T0) and 1 month afterwards (T1). Humoral and cellular immunity were assayed with Roche Elecsys Anti-SARS-CoV-2 and Roche Elecsys IGRA SARS-CoV-2, respectively.

Results

The study population consisted of 51 subjects (median age: 43 years; 51% females). Total anti-SARS-CoV-2 antibodies and IGRA SARS-CoV-2 values increased at T1 from 9,050 to 25,000 BAU/mL (p<0.001), and from 0.44 to 0.78 IU/mL (p=0.385), accounting for median increase of 2.0 and 1.6 folds, respectively. Increased T1 values of total anti-SARS-CoV-2 antibodies and IGRA SARS-CoV-2 were recorded in 100% and 68.6% subjects, respectively. In those with baseline values below the median, post-vaccine levels displayed larger increases of 3.3 and 5.1 folds for anti-SARS-CoV-2 total antibodies and IGRA SARS-CoV-2, respectively. The variation of total anti-SARS-CoV-2 antibodies was inversely associated with their T0 values (r=−0.97; p<0.001), whilst that of IGRA SARS-CoV-2 was inversely associated with its T0 value (r=−0.58; p<0.001). No other signifcant associations were found with demographical or clinical variables, including side effects.

Conclusions

The bivalent BNT162b2 vaccine booster enhances humoral and cellular immunity against SARS-CoV-2, especially in recipients with lower baseline biological protection.
Diagenesis and evolution of deep tight reservoirs: A case study of the fourth member of Shahejie Formation (cg: 50.4-42 Ma) in Bozhong Sag
Authors: Zhang Juan , Wang Chenchen , Jia Yunqian , Wu Qianyu
Published: February 2023

This study focused on the deep tight sandstone reservoir (DTSR) of the fourth member of the Shahejie Formation in the Bozhong Sag, Bohai Bay Basin, a special type of reservoir. To reveal the diagenesis and evolution of the reservoir in the study area, cores observation, thin section identification, scanning electron microscopy, grain size analysis, and petrophysical properties measurements are available to analyze the mechanics of diagenesis and densification processes. The recognition is agreed on that (1) the lithology of the fourth member is mainly composed of lithic arkose and feldspathic lithic sandstone with low compositional maturity, and grain sizes vary from middle to coarse; (2) the porosity of reservoir ranges from 4 to 11.5% (av. 6.8%), which belongs to the medium low porosity sandstone reservoir; the pore structure is complex and the type of pore spaces is mainly secondary pore, while original pores are less developed due to the deep distribution of strata; (3) based on the quantitative calculation of porosity of the DTSR, it was identified that compaction is the main reason for sandstone reservoir densification, with an average porosity reduction of 62%, followed by cementation filling intergranular pores with an average pore reduction rate of 25.1%. Dissolution plays a constructive role in improving porosity, with an average increase rate of 18.5%.
Antitrypanosomal activity of Argemone mexicana extract and fractions in the animal model of Trypanosoma brucei brucei infection
Authors: Chukwu Ifeoma L. , Ugwu Malachy C. , Iroha Ifeanyi R. , Mbagwu Ikechukwu S. , Okafor Ugochukwu U. , Ajaghaku Amara A.
Published: February 2023

Background

This study investigated the antitrypanosomal activity of Argemone mexicana extract and fractions in the animal model of Trypanosoma brucei brucei infection.

Methods

The whole plant was cold-macerated with methanol. The liquid–liquid partitioning of the extract with n-hexane, ethyl acetate, butanol, and water produced various fractions of the extract. Infection was established by the inoculation of T. brucei brucei-infected red blood cells in the animals. Treatment with the extract and fractions was done orally for 5 days postinfection at 200 and 400 mg/kg doses. Diminazene aceturate 3.5 mg/kg and 5 mL/kg 10% Tween 80 served as standard and vehicle control, respectively. Parasite load, packed cell volume (PCV), animal body weight, and survival as well as serum liver function enzymes’ activities were also assessed.

Results

The extract and the n-hexane fraction showed the presence of all the tested phytocompounds except tannins and cardiac glycosides, respectively. The extract showed a reduction in parasitemia while the order of activity for the fractions was n-hexane ≫ water ≫ butanol ≫ ethyl acetate. The n-hexane fraction produced complete protection against parasite-induced mortality just like the reference standard and a higher increase in PCV compared with the reference standard. The extract, n-hexane, and water fractions showed protection against infection-induced liver damage with a significant (P < 0.05) difference when compared to the vehicle control group.

Conclusion

A. mexicana showed antitrypanosomal activity which may be attributed to the presence of phytocompounds particularly saponins, which were present in the extract and fractions that showed antitrypanosomal activity but absent in fractions that showed no or weak antitrypanosomal activity.
The role of prior exposure in the likelihood of adopting the Intentional Stance toward a humanoid robot
Authors: Roselli Cecilia , Marchesi Serena , De Tommaso Davide , Wykowska Agnieszka
Published: February 2023

One of the key questions in human–robot interaction research is whether humans perceive robots as intentional agents, or rather only as mindless machines. Research has shown that, in some contexts, people do perceive robots as intentional agents. However, the role of prior exposure to robots as a factor potentially playing a role in the attribution of intentionality is still poorly understood. To this end, we asked two samples of high school students, which differed with respect to the type of education they were pursuing (scientific/technical vs. artistic) to complete the InStance Test, measuring individual tendency to attribute intentionality toward robots. Results showed that, overall, participants were more prone to attribute intentionality to robots after being exposed to a theoretical lecture about robots’ functionality and use. Moreover, participants’ scientific/technical education resulted in a higher likelihood of attribution of intentionality to robots, relative to those with artistic education. Therefore, we suggest that the type of education, as well as individually acquired knowledge, modulates the likelihood of attributing intentionality toward robots.
Utilizing Yoga Principles and Techniques in Experiential Family Therapy
Authors: Sabo Kayleigh , Reiter Michael D.
Published: February 2023

The effects of yoga on mental health and general wellbeing are not a new research endeavor, as there are many studies that explore this topic. However, there is little literature on the integration of yoga within a therapeutic context. We seek to fill that gap and demonstrate the connections we see between the philosophies and practices of yoga and experiential family therapy specifically. First, we give a background of the origins of yoga and its use in psychotherapy thus far in addition to the essentials of Satir's experiential family therapy. We then connect these fields by discussing how they overlap both in beliefs and practices and by providing a case example that utilized techniques from both disciplines. We end with sharing our reflections surrounding implications to consider and our hopes for where this discourse could lead us in the future.
“I Have Been Carrying This Letter Around With Me Like a Talisman”: A Case Story of Narrative Therapy With a Transgender Client
Authors: Zarate Jose , Babcock Nikole
Published: February 2023

This article demonstrates the practice of narrative therapy and the use of therapeutic letters with a transgender individual. Despite the growth of this practice, limited attention has been devoted to how beneficial therapeutic letters can be for transgender individuals who are in the process of coming out and transitioning. This case story aims to addresses the gaps in literature surrounding the use of therapeutic letters with transgender individuals in counseling practice. In this case story we discuss the therapeutic process of using narrative therapy. We communicate our findings through counselor-written therapeutic letters and Martha's response to the therapeutic letters. The use of therapeutic letters in counseling supported Martha's gender transition and agency to continue their gender transition.
Revisiting a Dialogue: Collaborative and Dialogical Practices in Motion
Authors: Ayora-Talavera Alicia , Ayora-Talavera Dora A. , Goyri-Ceballos Jaime , Campo-Marín Teresita C.
Published: February 2023

The authors and eight other colleagues from Yucatan in Mexico, with an average of ten years of training and professional experience with collaborative and dialogic practices (CDP), carried out an investigation on how the practitioners of these practices develop a critical view of their professional activity. Our research is framed in discursive psychology, since we identify ourselves with the critical reflections about practicing. We reflect on how to adopt the discourse of the CDP, how it can be associated with the discomfort that one has with positivist discourses, as ways of challenging what is established, and even as a form of freedom. In addition, we review the CDP as a stance and a form of analysis, as well as offer our reflections on its possible colonizing and political effects. We offer some practical implications as a form of updating to face the new dilemmas that life throws at us.
Tokio descubre México
Authors: Garduño Ana
Published: February 2023

This is a case study that analyzes the cold-war era policies of the Mexican government with respect to art exhibitions. In Washington, DC, in 1953, an exhibition of ancient Japanese art opened and thus ended the artistic invisibility of Japan that stemmed from the Second World War. Following this sign of “official rehabilitation,” Mexico presented a compendium of much of the history of Mexican art in Japan in 1955. The exhibition, Mekishiko Bijutsu-ten, reproduced an exhibition archetype that had been formalized decades earlier, by building itself around three large nuclei: ancient, modern, and popular art. There were in fact three exhibitions—each coordinated by the Instituto Nacional de Bellas Artes (INBA, Mexico’s national institute of fine arts)—with pavilions at the Venice Biennale of 1950 and at Paris’s Museum of Modern Art in 1952. Together, they demonstrate the power of the INBA over ideas about Mexican art. The adjustments in the selection of works sought to reveal aesthetic parallels with Japan and generate cultural empathy. At the time, Mexico was triumphantly promoting its art as a product of an artistic renaissance that had occurred after the 1910 Revolution, an avant-garde that was seen as a possibility for the future of Japan. The Mekishiko Bijutsu-ten, too, was received as a novel proposal to activate old artistic forms for contemporary aesthetic production. This practice contrasted with the Japanese view of the issue, which had generally experienced as disruptive attempts to modernize the past. Thus, the exhibition fostered the transfer of cultural strategies.
Structural, Swanepoel’s method, optical and electrical parameters of vacuum evaporated Zn50Se50 thin films
Authors:   a Physics Department. Faculty of Science, Ibb University. Ibb, Yemen, Alwany A. B. , Youssef G. M. ,   Laboratory of Materials Sciences and Solar Cells, Physics Department, Faculty of Science, Ain Shams University, Abbasia, Cairo, Egypt, Algradee M. A. ,   a Physics Department. Faculty of Science, Ibb University. Ibb, Yemen, Abdel-Rahim M. A. ,   Physics Department. Faculty of Science, Assuit University. Assuit, Egypt, Alnakhlani A. ,   a Physics Department. Faculty of Science, Ibb University. Ibb, Yemen, Hassan B. ,   a Physics Department. Faculty of Science, Ibb University. Ibb, Yemen
Published: February 2023

Thin films of Zn50Se50 were prepared by the vacuum evaporation technique on glass substrates. The influence of annealing temperature (Tann.) on the structural and optical properties of ZnSe polycrystalline films was investigated using X-ray diffraction (XRD), scanning electron microscopy (SEM) and optical transmittance T (λ). The crystalline phases that were found in the Zn50Se50 thin films are ZnSe, Se and Zn. The refractive index (n) and the thickness of the films (d) were calculated using Swanepoel’s method for the films annealed at (423 K). The mechanism of optical absorption follows the rule of direct transition. The values of band gap (EG) were found to decrease from about 2.933 to 2.635 eV with the increasin of the Tann. from 300 to 423 K. Urbach energy (EU) was calculated and found to the increase by increasing Tann. The dispersion of the n was discussed in terms of the single-oscillator Wemple and DiDomenico model. The Arrhenius formula was used to discuss the electrical conductivity (σDC), activation energy (ΔE) and preexponential factor (σo).
Effect of pH values on the structural, morphological and sensing properties of ZnO nanostructure
Authors:   Department of Physics, B.B.D. University, Lucknow-226020, U.P., India, Zaidi A. , Tiwaria K. ,   Department of Physics, B.B.D. University, Lucknow-226020, U.P., India, Awasthi R.R. ,   Faculty of engineering and technology, Khwaja Moinuddin Chisti Language University, Lucknow- 226013, U.P., India, Dubey K.C. ,   Department of Physics, Shia P.G. College, Lucknow-226003, U.P., India
Published: February 2023

In the present investigation ZnO thin films have been prepared by sol-gel spin coating technique with different pH values. The effect of pH values of precursor solution on the crystal structural, morphological and humidity sensing properties of ZnO nanostructures have been investigated using different characterization technique. The crystal structure and phase analysis has been examined by powder X-ray diffraction (PXRD) technique. The PXRD pattern clearly revealed the ZnO thin films have hexagonal wurtzite crystal structure. The average crystallite size of ZnO thin films have been calculated using Scherer formula and found to be ~24 nm to ~30 nm. The microstrain (ɛa) and (ɛc) of ZnO thin films for different pH values 8 and 11, have been calculated and found to be 7.59, 0.1017; 7.57, 0.1094 respectively. The scanning electron microscopy (SEM) image depicts the formation of spherical nanostructurewith diameter range 80 to 95 nm distributed throughout the surface. The atomic force microscopy (AFM) image also shows the spherical nanostructureconsistently distributed throughout the surface with diameter range 75 to 80 nm.It was also found that increasing the pH values from 8 to 11 modified the grains and grains boundary. The humidity sensing properties of ZnO thin films prepared from pH values of 8 to 11 and found to be lower hysteresis loss, less aging effect and good sensitivity in the range of 8.37 MΩ/%RH to 12.25 MΩ/%RH respectively
Microstructure analysis and thermal stability of Mg2+/Sr2+/SO42- ions doped hydroxyapatite bionanomaterials
Authors: Alshemary A. Z. , Muhammed Y. , Çardakli İ. S. , Marandi A. B.
Published: February 2023

This study evaluates the influence of the addition of Mg2+, Sr2+, and SO4 2- ions on the microstructure and thermal stability of hydroxyapatite (HA). The materials were calcined at 500 °C and 800 °C for 2 h, then characterized by XRD, FTIR, SEM, EDX, and FTIR techniques. The degree of crystallinity and crystallite size of HA crystals were significantly decreased with the incorporation of Mg2+/Sr2+/SO4 2- ions. While the lattice parameters were reduced due to the substitution of ions, The high incorporation of Mg2+ ions lowered the thermal stability of HA. At the same time, the addition of Sr2+ ions enhanced thermal stability. A similar impact on phosphate bands was seen in FTIR results. HA existed in spherical nanoparticles; incorporating Mg, Sr, and S ions doesn’t change the particle shape.
Influence of temperature on tribological behavior of AlCoCrFeNi coatings prepared by electrospark deposition
Authors:   School of equipment Engineering, Shenyang Ligong University, Shenyang 110159, China, Yang H. L. , Chen X. M. ,   School of equipment Engineering, Shenyang Ligong University, Shenyang 110159, China, Chen L. ,   Chongqing Jianshe Industry (Group) LLC, Chongqing 400054, China, Wang Z. J. ,   School of equipment Engineering, Shenyang Ligong University, Shenyang 110159, China, Hou G. C. ,   School of equipment Engineering, Shenyang Ligong University, Shenyang 110159, China, Guo C. A. ,   School of equipment Engineering, Shenyang Ligong University, Shenyang 110159, China, Zhang J. ,   School of equipment Engineering, Shenyang Ligong University, Shenyang 110159, China
Published: February 2023

AlCoCrFeNi high entropy alloy coatings were prepared on CrNi3MoVA steel by electrospark deposition technology, and their tribological behavior at different temperatures was investigated by utilizing a reciprocating friction and wear tester, and SEM, EDS and XRD were used to analyze the morphologies, composition and phase structure of AlCoCrFeNi coating. The results show that the as-deposited coating is composed of a single BCC structure with a hardness of 540±40 HV0.1. The wear resistance of AlCoCrFeNi coating at 600 ℃ is the bestamong 300 ℃, 600 ℃and 800 ℃, and its wear rate is only 2.53×10-5 mm3 /(N·m), which is one order of magnitude lower than that at the other two temperatures. At 600 ℃, the main wear mechanism is oxidation wear, and a continuous compact oxide scale formed on the worn surface, which greatly improves the wear resistance of AlCoCrFeNi coating.
Low-cost nebulizer spray deposited conduction mechanism of thin film ZnO nanoparticles
Authors:   Department of Physics, Periyar University PG Extension Centre, Dharmapuri636 705, Tamilnadu, India, Amudhavalli B. , Mariappan R. ,   Department of Physics, Adhiyamaan College of Engineering, Hosur, Krishnagiri635109, Tamilnadu, India, Prasath M. ,   Department of Physics, Periyar University PG Extension Centre, Dharmapuri636 705, Tamilnadu, India
Published: February 2023

The Zinc Oxide (ZnO) thin films have been deposited on glass substrate at different temperature from 300 to 500 o C by nebulizer spray pyrolysis technique. The prepared films were characterized by X-Ray diffraction (XRD), High resolution scanning electron microscope (HRSEM), Energy dispersive analysis by X-rays (EDAX), Photoluminescence (PL), UV-Vis-NIR spectrometer and impedance spectroscopy, respectively. The XRD confirms that the films are polycrystalline in nature with hexagonal wurtzite crystal structure with (002) plane as preferential orientation. The various parameters such as crystallite size, micro strain, and dislocation density were calculated from X-ray diffraction. HR-SEM images show smooth, tiny grains and dense morphology. The PL studies exhibits two emission peaks one at 389 nm corresponding to band gap excitonic emission and another located at 490 nm due to the presence of singly ionized oxygen vacancies. The UV-Vis-NIR spectrometer confirms the possibility of good transparent ZnO films with an average transmission of about ~85-95% in the visible region and optical band gap shifted from 3.37 eV to 3.2 eV with increase in temperature and which is supported by PL study. The semiconductor bahaviour and activation energy of these films have been confirmed by impedance spectroscopy measurements.
Preparation and characterization of ferrous manganese thin films for magnetic storage devices
Authors:   Department of Physics, Shree Venkateshwara Hi-Tech Engineering College, Gobichettipalayam – 638455, India, Poongodi A. , Thangaraj N. ,   Department of Physics, Velalar College of Engineering and Technology, Erode - 638 012, India, Sudha M. ,   Department of Physics, Sengunthar Engineering College, Tiruchengode -637205, India
Published: February 2023

The nanocrystalline nature of Ferrous Manganese (Fe-Mn) thin film coatings was obtained from sulphate baths at different current densities on the copper substrate. The effects of current density on structure, surface morphology, elemental composition, magnetic properties, and mechanical properties of electrodeposited Fe-Mn magnetic films were studied. The structural and surface properties of Fe-Mn thin films were studied using an Xray Diffractometer (XRD) and Scanning Electron Microscopy (SEM). The chemical compositions of the deposited films were investigated using Energy Dispersive X-ray Spectroscopy (EDAX). The magnetic properties of the thin films were studied with the aid of a Vibrating Sample Magnetometer (VSM). The electrodeposited Fe-Mn films were found to be nanocrystalline in nature due to the increase in current density. The deposits of Fe-Mn thin films were found to have a crack-free and smooth surface at low current densities. The films have good adherence to the copper substrate.
The Economy of Indonesia: Driven by Physical or Human Capital?
Authors: Agusalim Lestari , Anggraeni Lukytawati , Pasaribu Syamsul H.
Published: February 2023

This study aims to analyze whether economic growth in Indonesia is driven by physical or human capital using panel data analysis consisting of all provinces over the last nine years. The estimation results show that the Indonesian economy is more likely to be driven by physical than human capital. The formation of human capital that has a significant positive effect on economic growth is health. However, the education variable represented by the mean years schooling has no significant effect on economic growth when including the control variable in the research model. To improve the quality of education, the state requires the government to provide substantial educational spending. However, the budget has not been used optimally so that the expected achievements of graduates are not achieved. In addition, education spending has not met the criteria for quality spending. In contrast to education spending, an increase in health spending will increase economic growth by improving the quality of health and life expectancy. A healthier society will have a high level of productivity that impacts the regional and national economy.
The Determinant Factors of Poverty in Eastern Indonesia: Evidence from 12 Provinces
Authors: Febriandika Nur Rizqi , Rahayu Cahyaningtiyas , Kumar Rahul
Published: February 2023

This study aims to analyze the factors forming the number of poor people in Eastern Indonesia. Panel data regression was utilized as the analysis approach, with a cross-section comprising 12 provinces in Indonesia's Eastern Region from 2010 to 2018. This study will examine the effect of total government spending on education, government spending on health, labor force participation rate, regional minimum wage, investment, and the Gini index on poverty in Eastern Indonesia. The results showed that government spending on health and regional minimum wages had a negative effect on the number of poor people in Eastern Indonesia. The number of poor people in Eastern Indonesia will decrease if the realization of government spending on health and the determination of regional minimum wages increases. The increase in the realization of government spending in the health sector indicates that regional policies on the allocation of health spending have been carried out in a proportional, efficient, and effective manner so that they are right on target. Meanwhile, government expenditure on education, investment, labor force participation rates, and the Gini index has no effect on the number of poor people in Eastern Indonesia.