bluuebunny/crossref_metadata_2025 huggingface dataset:
Multimedialne oswojenie śmierci
Authors: Błaszczyk Marek
Published: February 2023

The paper presents a critical approach to Kultura i śmierć. Kres życia w perspektywie medialnego zapośredniczenia [Culture and death. The end of life from the perspective of media mediation] by Tomasz Błaszczyk (Wydawnictwo Naukowe Katedra, Gdańsk 2021). It discusses the main theses presented in the dissertation and invites the reader to reflect on the phenomenon of death, its place and role in technologically determined contemporary culture.
Na styku mediów, na styku technik. „Foto-grafia” klasyczna i cyfrowa w polskiej poezji najnowszej
Authors: Englender Barbara
Published: February 2023

The aim of this text is to present the literary image of the breakthrough that occurred with the invention of digital photography. The article focuses on the most contemporary Polish poetry – mainly authors born in the 70s, such as Jacek Dehnel, Marcin Świetlicki or Bronka Nowicka. On the basis of their texts, the literary image of both traditional analog photography and photos created with the use of the latest techniques is reconstructed. In her interpretations, the author uses the tools she has developed herself, which include concepts such as “photo-graphemicality”, which is a combination of features linking text with photography, and “photo-grapheme”, which is its individual realisation.
„Negatyw świata”. Inspiracje techniką graficzną jako źródło refleksji metaliterackiej – na przykładzie wiersza Ewy Lipskiej Albatros i grawer
Authors: Szewczyk-Haake Katarzyna
Published: February 2023

The paper presents an analysis of Ewa Lipska’s poem Albatros i grawer [‘The Albatross and the Engraver’], which is a rare example of evoking a work of graphic art in a poem. The metaphors used in the text, exploiting the field of meaning related to graphics, become the basis for metaliterary reflection. Important interpretative contexts indicated in the article are, on one hand, the history of graphic art and its technical arcana, and on the other, the poem The Albatross by Charles Baudelaire, alluded to in the poem and, by the same token, modernist ideas about the art and the artist. The poem’s consideration of the problem of ‘a negative’ and ‘an imprint’ leads to questions about the relationship between art and reality, a relationship which, radically transformed in the modern era, demands an ethical evaluation, just as the poem suggests.
Na dnie oka. Dziesiąta Muza z perspektywy stulecia
Authors: Hendrykowski Marek
Published: February 2023

The article attempts to reread Karol Irzykowski’s classic treatise on cinema and to recognize the importance of its significance in the context of the entirety of changes and achievements of humanistic culture in the interwar period.
Seismic hazard analysis by neo-deterministic seismic hazard analysis approach (NDSHA) for Kosovo
Authors: Hasi Nazmi , Hasi Latif , Syla Naim , Zeqiraj Arbër
Published: February 2023

It is favorable to re-evaluate the seismic hazard for a given territory, since in the course of time new methods are developed and new data are gathered that can enable more sophisticated (physically sound) and reliable assessment of the seismic hazard. Therefore, it is mandatory to re-evaluate the seismic hazard for Kosovo, considering the seismic sources in Kosovo. The data of this article influence the reduction of seismic risk for the territory of Kosovo.
Evolving global communications policy agendas and ‘North-South’ relations: the internet and telecommunications
Authors: Simpson Seamus
Published: February 2023

This article focuses on the recent evolution of global policy agendas in two key parts of the communications sector: the internet and telecommunications. It explores the key regulatory governance ideas and practices that have come to the fore in shaping these fast-moving policy arenas. It sheds light on the ways in which selected global institutional contexts have played vital roles in shaping telecommunications and internet policy agendas as well as the resulting implications. In doing so, the paper explores a number of key junctures in the evolution of policy at the international level, highlighting the positions of ‘Northern’ and ‘Southern’ hemisphere states at critical moments of change. The article contends that sectoral internationalization in telecommunications and the internet has reinforced – rather than created a context for positive change in – the traditional order of North-South relations in these parts of the global information economy and society.
Eigenvalue asymptotics for a class of multi-variable Hankel matrices
Authors: Tantalakis Christos Panagiotis
Published: February 2023

A one-variable Hankel matrix

H

a

{H}_{a}

is an infinite matrix

H

a

=

[

a

(

i
+
j

)

]

i
,
j
≥
0

{H}_{a}={\left[a\left(i+j)]}_{i,j\ge 0}

. Similarly, for any

d
≥
2

d\ge 2

, a

d

d

-variable Hankel matrix is defined as

H

a

=

[

a

(

i
+
j

)

]

{H}_{{\bf{a}}}=\left[{\bf{a}}\left({\bf{i}}+{\bf{j}})]

, where

i
=

(

i

1

,

…

,

i

d

)

{\bf{i}}=\left({i}_{1},\ldots ,{i}_{d})

and

j
=

(

j

1

,

…

,

j

d

)

{\bf{j}}=\left({j}_{1},\ldots ,{j}_{d})

, with

i

1

,

…

,

i

d

,

j

1

,

…

,

j

d

≥
0

{i}_{1},\ldots ,{i}_{d},{j}_{1},\ldots ,{j}_{d}\ge 0

. For

γ
>
0

\gamma \gt 0

, Pushnitski and Yafaev proved that the eigenvalues of the compact one-variable Hankel matrices

H

a

{H}_{a}

with

a

(

j

)

=

j

−
1

(

log
j

)

−
γ

a\left(j)={j}^{-1}{\left(\log j)}^{-\gamma }

, for

j
≥
2

j\ge 2

, obey the asymptotics

λ

n

(

H

a

)

∼

C

γ

n

−
γ

{\lambda }_{n}\left({H}_{a})\hspace{0.33em} \sim \hspace{0.33em}{C}_{\gamma }{n}^{-\gamma }

, as

n
→
+
∞

n\to +\infty

, where the constant

C

γ

{C}_{\gamma }

is calculated explicitly. This article presents the following

d

d

-variable analogue. Let

γ
>
0

\gamma \gt 0

and

a

(

j

)

=

j

−
d

(

log
j

)

−
γ

a\left(j)={j}^{-d}{\left(\log j)}^{-\gamma }

, for

j
≥
2

j\ge 2

. If

a

(

j

1

,

…

,

j

d

)

=
a

(

j

1

+
⋯
+

j

d

)

{\bf{a}}\left({j}_{1},\ldots ,{j}_{d})=a\left({j}_{1}+\cdots +{j}_{d})

, then

H

a

{H}_{{\bf{a}}}

is compact and its eigenvalues follow the asymptotics

λ

n

(

H

a

)

∼

C

d
,
γ

n

−
γ

{\lambda }_{n}\left({H}_{{\bf{a}}})\hspace{0.33em} \sim \hspace{0.33em}{C}_{d,\gamma }{n}^{-\gamma }

, as

n
→
+
∞

n\to +\infty

, where the constant

C

d
,
γ

{C}_{d,\gamma }

is calculated explicitly.
“Pivot and Cluster Strategy” in the light of Kahneman’s “Decision Hygiene” template
Authors: Shimizu Taro , Lim Tow Keang
Published: February 2023

Pivot and cluster strategy (PCS) is a cognitive forcing strategy designed to achieve diagnostic accuracy through the analytical deployment of a cluster of differential diagnoses (Cluster) specific to the initial most likely diagnosis (Pivot) recalled by a clinical diagnostician. This approach has been widely implemented and has effectively decreased diagnostic errors. Kahneman et al. have introduced innovative notions of noise and decision hygiene. Noise refers to the variance of errors, with numerous individuals’ errors in judgment pointing in different directions. They suggest a “Decision Hygiene” (DH) template, w preventative technique meant to reduce noise in decision-making. This paper introduced an interpretation of the existing strategy of PCS from new perspectives of noise and DH, which would allow us to further understand the usefulness of PCS, thereby contributing to a positive effect on the quality of diagnosis.
Experimental investigation of properties and aging behavior of pineapple and sisal leaf hybrid fiber-reinforced polymer composites
Authors: Deeban Booramurthy , Maniraj Jaganathan , Ramesh Manickam
Published: February 2023

Using plant leaf fibers as reinforcements in thermo-plastic resins to produce affordable and lightweight composites is the subject of growing interest in research. Although these fibers have several advantages over synthetic fibers, mechanical characteristics of composites such as moisture absorption, poor wettability, and insufficient adhesion between the matrix and the fiber cause disadvantages. To overcome these issues, in this experimental study, two leaf-based plant fibers are hybridized and the composites have been fabricated by hand lay-up process. The composites were subjected to several tests. The results showed that the hybridization of sisal and pineapple leaf fiber (PALF) increases the mechanical strength of the composite by a maximum tensile strength of 3.59 kN, a little lower flexural strength than the individual fiber, and a noticeably higher compressive strength. The results further showed that the decreased affinities for moisture content and the aged composites seem to be prone to be hydrophilic. Findings of the experiments reveal that the hybridization of sisal and PALF has a significant influence on the properties of the composites. The scanning electron microscopy micrographs of fractured surfaces have been examined, and the findings have effectively been investigated.
Finite element assisted self-consistent simulations to capture texture heterogeneity during hot compression
Authors: Singh Bhanu Pratap , Kumar Mirtunjay , Jain Roopam , Singh Amit , Mishra Sumeet
Published: February 2023

In the present work, finite element simulations were performed to capture the influence of friction and temperature gradient on the local strain distribution across the cross-section of a hot compressed specimen. The finite element predicted deformation histories for different regions of the hot compressed sample were exported to the viscoplastic self-consistent model to perform texture simulations in the variable velocity gradient mode and to capture the texture heterogeneity. Differences in texture intensity as well as characteristics were observed depending upon the distance from the central region of the hot compressed sample. It was observed that a double fiber texture with {110} and {100} parallel to the compression direction evolved in the central region of the specimen, which accommodates the highest amount of local plastic strain. On the other hand, only {110} fiber evolved in the region close to the dead zone, which accommodates the least amount of local plastic strain. Furthermore, volume fraction of the {100} fiber was observed to be sensitive towards strain rate sensitivity, where a higher rate sensitivity enhances the shear rates on the non-octahedral slip systems resulting in strengthening of {100} texture fiber.
Study of the effect of virtual mass force on two-phase critical flow
Authors: Xu Hong , Chen Jiayue , Ming Pingjian , Badea Aurelian Florin , Cheng Xu
Published: February 2023

Critical (choked) flow is a highly concerning phenomenon in safety analysis for nuclear energy. The discharge mass flow rate prediction is crucial for engineering design and emergency response in case of nuclear accidents. Unfortunately, the critical flow is difficult to predict especially when the two-phase flow exists. The accuracy is based on a deeper understanding of the complex phenomenon of critical flow. The influence of virtual mass force on the two-phase critical flow was seldom concentrated on owing to the lack of suitable critical flow models for studies in detail. This study is based on a developed 6-equation two-phase critical flow model. It is confirmed that the virtual mass force contributes to the stability and convergence of the critical flow simulation and it will impact not only the critical mass flux but also the thermal hydraulic parameters along the discharge duct. The magnitude depends on the geometry of the discharge duct and the upstream condition. It is larger when the duct is longer and the pressure is lower. Furthermore, the virtual mass force for each flow regime was studied in detail with a sensitivity study. The results show that the most sensible condition for the virtual mass force is annular flow along a long tube under relatively low pressure. The future work is to develop a correlation of virtual mass force for critical flow specifically since the correlations in the literature were developed under general two-phase flow process conditions.
Genetic mutation of SLC6A20 (c.1072T > C) in a family with nephrolithiasis: A case report
Authors: Jv Menglei , Zheng Jing , Yang Anni , Xie Wei , Zhu Weiping
Published: February 2023

Nephrolithiasis is a highly prevalent disease worldwide that is associated with significant suffering, renal failure, and cost for the healthcare system. A patient with nephrolithiasis was found to have SLC6A20 variation. SLC6A20 gene in human is located on chromosome 3p21.3, which is a member of SLC6 family of membrane transporters and the product of this gene expression is transporter protein of sub-amino acid transporter system. The previous studies have reported that the mutation of SLC6A20 may cause hyperglycinuria or iminoglycinuria which may lead to nephrolithiasis. The object was to investigate the relationship between nephrolithiasis and SLC6A20 through pedigree genetic analysis. To explore whether the SLC6A20 mutation can cause hereditary nephrolithiasis, and provide evidence for further research. The urine and blood were collected from the patients for compositional analysis. DNA sequencing was applied to analyze the gene mutation. Labial gland and kidney biopsy were conducted for pathological analysis. As a result we reported a rare family case of nephrolithiasis accompanied by primary Sjogren’s syndrome and investigated it by examining the family members with whole exome gene sequencing technology and detecting 20 different amino acids and 132 kinds of organic acids in the urine with gas chromatography-mass spectrometry. We discovered that the proband and her mother had hyperglycinuria and the proband (Ⅱ2), her sister (Ⅱ3), and mother (Ⅰ1) were found to carry the SLC6A20 gene exon NM_020208.3 sequence c.1072T > C heterozygous mutation, and the other family members (Ⅰ2, Ⅱ1, Ⅱ4, Ⅲ1, Ⅲ2) did not carry the genetic mutation. As a conclusion, the heterozygous mutation of SLC6A20 (c.1072T > C) might be contributed to hyperglycinuria and the formation of nephrolithiasis.
Crystal structure of bis(μ2-1-pyrenecarboxylato-κ3
O,O′:O′)-bis(1-pyrenecarboxylato-κ2
O,O′)-(benzimidazole-κ1
N)dicadmium(II), C82H48Cd2N4O8
Authors: Gao Peng-Fu , Li Ting , Fu Hong-Ru
Published: February 2023

C82H48Cd2N4O8, triclinic,

P

1
‾

$P\overline{1}$

(no. 2), a = 7.6031(3) Å, b = 10.6963(3) Å, c = 19.0717(7) Å, α = 98.967(3)°, β = 99.207(3)°, γ = 95.921(3)°, V = 1499.21(9) Å3, Z = 1, R

gt
(F) = 0.0396, wR

ref
(F
2) = 0.0802, T = 293(2) K.
Crystal structure of methyl 2-(2-chloroacetyl)-1-(4-(methoxycarbonyl)phenyl)-2,3,4,9-tetrahydro-1H-pyrido[3,4-b] indole-3-carboxylate, C23H21ClN2O5
Authors: Xu Xiaona , Zhu Zhoujing , Liu Bin
Published: February 2023

C23H21ClN2O5, monoclinic, P21/c (no. 14), a = 9.191(3) Å, b = 10.725(5) Å, c = 11.2390(10) Å, β = 109.869(13)°, V = 1041.9(6) Å3, Z = 2, R

gt
(F) = 0.0609, wR

ref
(F
2) = 0.1695, T = 293 K.
The crystal structure of 1-(2-fluorobenzoyl)-5-methoxy-2-methyl-1H-indole-3-carbonitrile, C18H13FN2O2
Authors: Siyuan Ma , Mengping Guo
Published: February 2023

C18H13FN2O2, orthorhombic, Pbca (no. 61), a = 13.8082(4) Å, b = 9.7555(3) Å, c = 21.8116(7) Å, V = 2938.15(16) Å3, Z = 8, R
gt(F) = 0.0402, wR
ref(F
2) = 0.1131, T = 293 K.
Modelling of fixed bed and slurry bubble column reactors for Fischer–Tropsch synthesis
Authors: Sauerhöfer-Rodrigo Frank , Díaz Ismael , Rodríguez Manuel , Pérez Ponciano
Published: February 2023

An extensive review of slurry bubble column reactor and fixed bed reactor steady state models for Fischer–Tropsch synthesis is presented in this work. Material, energy and momentum balance equations are presented here along with the relevant findings of each study for modelling purposes. For fixed bed reactor models, one-dimensional and two-dimensional models can be differentiated, with the latter being better at predicting hot spots and thermal runaways, although the computational effort required solving them is also higher. Fixed bed reactors can also be classified as pseudo-homogeneous or heterogeneous models, the former considering that all phases are in thermal and chemical equilibrium, and the latter having different profiles for the catalyst particles, generally including a pellet model. For slurry bubble column reactors, single-class and double-class bubble models can be differentiated. The double-class bubble models represent better churn-turbulent regimes at the expense of a higher computational effort.
Marketing de Influencers en el turismo: Una revisión sistemática de literatura
Authors: Rodriguez-Hidalgo Alma Belen , Tamayo Salcedo Ana Leticia , Castro-Ricalde Diana
Published: February 2023

El presente trabajo tiene como objetivo principal analizar la literatura que ha estudiado la intervención del influencer en la toma de decisiones del turista. Mediante una revisión sistemática y un análisis de contenido de los artículos científicos localizados en las bases de datos Science Direct, Web of Science, Springer, Redalyc, Dialnet, Scielo y Emerald, tanto de acceso abierto como restringido, en idiomas inglés y español. Considerando el primer artículo relacionado con la temática localizado en el año 2003 hasta abarcar la primera mitad del año 2022. Los resultados muestran los conceptos, fundamentos teóricos y enfoques metodológicos que se han desarrollado en las investigaciones relacionadas, así como las tendencias presentes y futuras de la literatura que han tratado el fenómeno del influencer en el turismo. Se identifican y explican cada uno de los elementos, distinguidos como indispensables para el desempeño del marketing de influencers en la práctica. Se discuten los principales hallazgos y, se ofrece una base de cocimientos para los investigadores que deseen profundizar en el estudio del fenómeno influencer que se considera de utilidad para el diseño de estrategias de marketing turístico en las organizaciones. Finalmente se exponen los vacíos de conocimiento, así como las limitaciones detectadas en la investigación.
Microstructure Analysis of Cold Bituminous Emulsion Mixture Using Different Filler Type
Authors: Kar Siksha Swaroopa , Beniwal Nipun , Bharath G.
Published: February 2023

In today’s scenario, the environmental impact of the transport sector plays a major role in net carbon emission generation and global warming. Seeing the emerging environmental issue, it has been mandatory to adopt sustainable technologies in every sector. The use of bitumen emulsion in the construction of pavement has been rapidly enhanced in the last decade. This technology eliminates the heating of aggregate and binder, resulting in a reduction of greenhouse gas emissions and energy consumption, which is also termed as cold mix technology. Filler has a major role in the formation of bonds between bitumen emulsion and aggregate. In the present study, cement, lime, and fly ash have been considered as filler materials along with stone dust and the required optimum emulsion content and water content were determined. The impact of filler on the breaking of bitumen emulsion is studied through scanning electron microscope image analysis. The impact of filler on pH of bitumen emulsion mastic is also evaluated. The optimum emulsion content in cold bituminous emulsion mixtures (CBEMs) depends on the particle size of the filler. The required water content for lime is less compared to other filler materials. The results show that cement and fly ash are pozzolanic in nature, form hydration products in the presence of water in CBEM, and result in higher density and stability. The study depicts the role of filler material in CBEM at the microlevel.
Multiscale Characterization of Rejuvenated RAP Binders
Authors: Abdelaziz Amal , Masad Eyad , Epps Martin Amy , Arámbula Mercado Edith
Published: February 2023

Reclaimed asphalt pavement (RAP) is increasingly being utilized in asphalt pavements because of the high cost and scarcity of virgin asphalt materials. However, because RAP is a stiff material, it requires careful engineering to prevent cracking. Recycling agents have shown the ability to partially restore the properties of RAP binders if applied in a proper type and dose. Many studies investigated the impact of recycling agents when added to blends of virgin and RAP binders, but only a few investigated their effectiveness when applied to only RAP binders. The aim of this paper is to investigate the effect of various types and doses of recycling agents on the properties of RAP binders. Rheological properties were measured using a dynamic shear rheometer (DSR). Fourier-transform infrared spectroscopy was utilized to measure the degree of oxidation of the rejuvenated RAP binders. Furthermore, atomic force microscopy (AFM) tests were conducted to measure the morphology and modulus of rejuvenated RAP binders at the nanoscale. Finally, AFM measurements were used to calculate a rejuvenation index (RI), which was developed in an earlier study by the authors to assess the effectiveness of recycling agents in resisting the adverse effects of aging. DSR results demonstrated that the inclusion of recycling agents lowered the stiffness of the RAP binders. AFM morphology images revealed the presence of a large number and varying sizes of phase associations in the RAP binders. These phase associations became more pronounced with aging. Some recycling agents partially reversed the aging effect by reducing the area occupied by these associations. Nonetheless, after long-term aging, the effect of recycling agents diminished. The results of this study revealed that characterizing rejuvenated RAP binders at both the microscale and macroscale levels can indicate the effectiveness of recycling agents and aid in the selection of type or dose of recycling agent.
Effect of Supplementary Cementitious Materials with Similar Specific Surface Area on Cementitious Composite Systems
Authors: Sevim Ozer , Sengul Cagrı Goktug , Kartal Saruhan , Toklu Kenan , Caglar Yasin
Published: February 2023

This study investigated the effect of the mechanical and durability properties of cementitious composite systems with supplementary cementitious materials (SCMs), including fly ash (FA), ground granulated blast furnace slag (GGBS), and bottom ash (BA), with similar specific surface areas (∼3,300 cm2/g). FA, GGBS, and BA were ground to a specific surface area of ∼3,300 cm2/g (about the cement-specific surface area) and then replaced with cement at 5 %, 10 %, 15 %, and 20 % replacement ratios. The compressive strength, flexural strength, length change, and rapid chloride ion permeability of the cementitious composites incorporating FA, GGBS, and BA with similar specific surface areas were recorded after 7-, 28-, and 90-day curing periods. As a result, cementitious composites containing GGBS improved the mechanical and durability properties at the maximum rate. It was shown that the properties of cementitious composites containing 20 % GGBS yielded better results than the control specimens without any SCMs.
An Apparatus for Determining Micromechanical Interface Shear Properties of Geomaterial Contacts
Authors: Kandpal Lalit , Vangla Prashanth
Published: February 2023

This paper presents a custom-built micromechanical testing apparatus to analyze the interface shear behavior of geomaterial contacts. This apparatus allows for the investigation of rolling and sliding friction of a wide range of geomaterial contacts under various testing parameters, including normal load, displacement rate, and dry and wet conditions. The device is instrumented with sensors (load, displacement, and camera) and a computerized data acquisition system to measure and record the force, displacement, and images of the contacts during the test for in-depth study. The images are captured from the bottom of the sliding platform while shearing for only the contacts made of particle and transparent continuum materials. The shear response accuracy for the geomaterial contacts tested in the custom-built micromechanical apparatus is demonstrated by comparing the results of the same contacts obtained from a high-end tribometer apparatus. It was found that test findings from a custom-built apparatus are as accurate as those from a high-end tribometer and reliable for the micromechanical analysis of geomaterial interactions. Further, experiments were performed on different types of interface contacts and under different conditions to demonstrate the apparatus’s sensitivity. These findings indicate that the apparatus stiffness is sufficient and facilitates the understanding of micromechanical behavior and estimates basic yet essential inputs required to comprehend the complex behavior of geomaterials.
The Basolateral Amygdala Sends a Mixed (GABAergic and Glutamatergic) Projection to the Mediodorsal Thalamic Nucleus
Authors: Ahmed Nowrin , Paré Denis
Published: February 2023

The medial prefrontal cortex receives converging inputs from the mediodorsal thalamic nucleus (MD) and basolateral amygdala (BLA). Although many studies reported that the BLA also projects to MD, there is conflicting evidence regarding this projection, with some data suggesting that it originates from GABAergic or glutamatergic neurons. Therefore, the present study aimed to determine the neurotransmitter used by MD-projecting BLA cells in male and female rats. We first examined whether BLA cells retrogradely labeled by Fast Blue infusions in MD are immunopositive for multiple established markers of BLA interneurons. A minority of MD-projecting BLA cells expressed somatostatin (∼22%) or calretinin (∼11%) but not other interneuronal markers, suggesting that BLA neurons projecting to MD not only include glutamatergic cells, but also long-range GABAergic neurons. Second, we examined the responses of MD cells to optogenetic activation of BLA axons using whole-cell recordingsin vitro. Consistent with our immunohistochemical findings, among responsive MD cells, light stimuli typically elicited isolated EPSPs (73%) or IPSPs (27%) as well as coincident EPSPs and IPSPs (11%). Indicating that these IPSPs were monosynaptic, light-evoked EPSPs and IPSPs had the same latency and the IPSPs persisted in the presence of ionotropic glutamate receptor antagonists. Overall, our results indicate that the BLA sends a mixed, glutamatergic-GABAergic projection to MD, which likely influences coordination of activity between BLA, MD, and medial prefrontal cortex. An important challenge for future studies will be to examine the connections formed by MD-projecting glutamatergic and GABAergic BLA cells with each other and other populations of BLA cells.

SIGNIFICANCE STATEMENTThe mediodorsal thalamic nucleus (MD) and basolateral amygdala (BLA) send convergent projections to the medial prefrontal cortex. Although many studies reported that the BLA also projects to MD, there is conflicting evidence as to whether this projection is glutamatergic or GABAergic. By combining tract tracing, immunohistochemistry, optogenetics, and patch clamp recordingsin vitro, we found that BLA neurons projecting to MD not only include glutamatergic cells, but also long-range GABAergic neurons. Differential recruitment of these two contingents of cells likely influences coordination of activity between the BLA, MD, and medial prefrontal cortex.
INFLUENCE OF CORONA DISCHARGE ON PHOTOINDUCED MODIFICATION OF OPTICAL CHARACTERISTIC OF Cu–As2Se3 THIN FILM STRUCTURES
Authors:   Institute of Applied Physics, 5 Academiei Str., Chisinau, MD-2028, Republic of Moldova, NASTAS A. , IASENIUC O. , IOVU M.
Published: February 2023

The object of our current investigation is Cu-As2Se3 thin film structures. The impact of corona discharge on photoinduced modifications of the transmission spectra of both asdeposited and exposured with actinic light of the Cu-As2Se3 structures have been studied. Two cases have been investigated. First normal irradiation of the film structures without charging, and another one, when exposure was switched on, 7 kV corona charge at different polarity was applied. As a result, in the region of the weak absorption in the transmission spectra the photobleaching effect was observed and in the region of the strong absorption the photodarkening phenomena was manifested. In the region o weak absorption higher values of photobleaching was observed during exposure in the field of positive corona discharge. The obtained results are qualitatively analyzed taking into account the photodarkening of the semiconductor during it doping with Cu ions as well as transmission increases of the structure during photodiffusion of the cupper in the amorphous semiconductor.
SPECTRAL DEPENDENCE OF PHOTOINDUCED FORMATION OF SURFACE RELIEF GRATINGS IN AMORPHOUS CHALCOGENIDES
Authors:   Institute of Solid State Physics, University of Latvia, Latvia, REINFELDE M. , TETERIS J. , GRANTS R.
Published: February 2023

The surface relief grating formation in As2S3 and As40S15Se45 films under laser wavelengths λ = 491, 532, 561, 594 and 633 nm light influence was examined. The studies of spectral dependence of photoinduced birefringence and its development during the holographic recording in studied chalcogenide films showed that photoinduced birefringence plays an important role in SRG formation process.
SUPERIMPOSED EQUALLY ORIENTED DIFFRACTION GRATINGS FORMED IN As2S3 FILMS
Authors:   Institute of Applied Physics, Chisinau, Republic of Moldova, SERGEEV S. A. , IOVU M. S. , YU MESHALKIN A.
Published: February 2023

Surface relief diffraction structures composed of two or three superimposed unidirectional gratings with unequal grating periods were produced using the electron beam recording and subsequent chemical etching. Diffraction patterns produced by different diffraction structures were studied. In addition to the main diffracted beams the low-intensity “ghost” diffracted beams were created by some grating structures. Their appearance was caused by a difference in spatial frequency between gratings and by summation of spatial frequencies as well. The calculated grating periods corresponding to “ghost” diffracted beams were found to agree well with those determined from diffraction patterns.
INFLUENCE OF GLASSY BACKBONE ON THE PHOTOFORMATION AND PROPERTIES OF SOLID ELECTROLYTES Ag : As-S-Ge
Authors:   Department of Physics, Technical University of Moldova, bd. Dacia 41, Chisinau 2060, Moldova, TSIULYANU D. , STRATAN I. , CIOBANU M.
Published: February 2023

The effect of the glassy backbone on the process of fabrication and some properties of solid electrolytes obtained via photodissolution (PD) of Ag into chalcogenide glasses (ChG) of the system As-S-Ge have been studied with respect to XRD and far IR spectroscopy analyses. The compositional tie – line (GeS4)x (AsS3)1-x has been chosen to realize the monotonic transition of the structural units of glassy backbone from trigonal to tetragonal configuration. It is shown that the process of solid electrolyte formation occurs in three steps, but the last two steps, as well as the electrical properties of the finally fabricated electrolyte, are strongly influenced by chemical composition and microstructure of the used ChG backbone. The rate of solid electrolyte formation exhibit a maximum around of glassy backbone composition (GeS4)0.33(AsS3)0.67 but the electrical resistivity of fabricated solid electrolytes reaches a minimum at this composition. Based on IR transmission spectra analyses, it is assumed that these peculiarities are due to glass homogenization, which results from building in this alloyed composition of an amalgamation of tetrahedral and trigonal structural units connected in a random network, without clustering. Such homogenization promotes the transport of both electrons and ions involved in photoreaction because of lack of phase boundaries and additional defects.
SYSTEMATIZED AND SIMPLIFIED PROCESSING OF CuInGaSe2 THIN FILMS TO BE APPLIED ON SOLAR CELLS
Authors:   ESFM-IPN, Physics Department, U.P.A.L.M., San Pedro Zacatenco, CDMX, 07738, Mexico, SASTRÉ-HERNÁNDEZ J. , MENDOZA-PÉREZ R. ,   UACM, Av. Prolongación San Isidro 151, Col. San Lorenzo Tezonco, CDMX, 09790, Mexico, ALBOR-AGUILERA M. L. ,   ESFM-IPN, Physics Department, U.P.A.L.M., San Pedro Zacatenco, CDMX, 07738, Mexico, JIMÉNEZ-OLARTE D. ,   ESIME-IPN, Section of Postgraduate Studies and Research, U.P.A.L.M., San Pedro Zacatenco, CDMX, 07738, Mexico, SANTANA G. ,   Institute of Materials Research, UNAM, Coyoacán, Mexico, TUFIÑO-VELÁZQUEZ M. ,   ESFM-IPN, Physics Department, U.P.A.L.M., San Pedro Zacatenco, CDMX, 07738, Mexico, MORALES-ACEVEDO A. ,   dCINVESTAV-IPN, Electrical Engineering Department, Av. IPN No. 2508, CDMX, 07360, Mexico, CONTRERAS-PUENTE G. ,   ESFM-IPN, Physics Department, U.P.A.L.M., San Pedro Zacatenco, CDMX, 07738, Mexico
Published: February 2023

Results of processing and characterization of Cu(In,Ga)Se2 (CIGS) thin films growth by thermal co-evaporation with adequate physical properties to be used in solar cells are presented in this work. Cadmium Sulfide (CdS) as window material with 40 nm of thickness were deposited by chemical bath deposition (CBD) technique. A Molybdenum (Mo) layer was deposited as back contact on CIGS solar cells. Different CIGS thin films were processed by a simplified co-evaporation technique and revealed a good polycrystalline quality with an alfa-chalcopyrite phase. The stoichiometry of the CIGS thin films can be accurately controlled using a fully automated single vacuum photovoltaics manufacturing system. Automated system operations (ASO) is the set of software and hardware that allows computer systems, network devices or machines to function without any manual intervention. ASOs allow computer systems to work without a human operator physically located at the site where the system is installed. CIGS solar cells fabricated in this work, showed photovoltaic efficiencies close to 11 %.
COMPARATIVE STUDY OF THE MULTI-JUNCTION CIGS BASED SOLAR CELL PERFORMANCE WITH DIFFERENT MODES
Authors:   Laboratory of Semiconductor Devices Physics, University Tahri Mohammed of Bechar, Algeria, BELHADJI T. , DENNAI B. ,   Laboratory Smart grid & Renewable Energy, Faculty of Exact Sciences, University Tahri Mohammed, Bechar, Algeria
Published: February 2023

Today, The CIGS industrial sector emerges in the photovoltaic domain. Many significant enhancements are possible allowing to better ameliorate the solar cell performances. Thinlayer cells are second generation cells which are the result of the first generation cells evolution made of Silicium but with layer of extreme thickness [1].A simulation will be carried out for multi-color associations of photo batteries coupled in dichroic, tandem or cascade mode based on (CuGaSe2), (CuIn1-xGaxSe2) and their variants.A study of physical parameters influence and different layers will be done in order to determine the system of converting a larger part of solar spectrum leading to a high efficiency.
SYNTHESIS AND CHARACTERIZATION OF PbS NANOSTRUCTURES TO COMPARE WITH BULK
Authors:   Department of Physics, Vidyasagar University, Midnapore, Pin 721102, West Bengal, India, MISHRA A. K. , SAHA S.
Published: February 2023

Simple chemical reduction route is taken for growth of PbS nanostructure by using ethylene-diamine (EDA) as capping agent. Anhydrous lead chloride, sulphur, NaBH4 is taken as reactants. Different types of nanostructures are obtained by varying growth time and temperature. The room temperature synthesis of PbS nanoparticles in EDA medium produces high quality nanocrystals as shown by electron microscopy, optical and fluorescence measurements. It is observed that nanoparticles are larger in size for longer growth time as well as higher temperature. Structural and optical properties show that quantum confinement of PbS nanoparticles is good in EDA medium.
Q-SWITCHED ERBIUM-DOPED FIBER LASER UTILIZING TUNGSTEN DISULFIDE DEPOSITED ONTO D-SHAPED FIBER AS SATURABLE ABSORBER
Authors:   Faculty of Electrical Engineering, Universiti Teknologi Mara (Terengganu), 23000 Dungun, Terengganu, Malaysia, OMAR S. , ZULKIPLI N. F. ,   Photonics Engineering Laboratory, Department of Electrical Engineering, University of Malaya, 50603 Kuala Lumpur, Malaysia, JAFRY A. A. A. ,   Department of Physics, Faculty of Science, Universiti Teknologi Malaysia, 81310 Skudai, Johor, Malaysia, MUSA B. ,   Faculty of Electrical Engineering, Universiti Teknologi Mara (Terengganu), 23000 Dungun, Terengganu, Malaysia, ALI M. I. M. ,   Faculty of Electrical Engineering, Universiti Teknologi Mara (Terengganu), 23000 Dungun, Terengganu, Malaysia, HARUN S. W. ,   Photonics Engineering Laboratory, Department of Electrical Engineering, University of Malaya, 50603 Kuala Lumpur, Malaysia, JUSOH Z. ,   Faculty of Electrical Engineering, Universiti Teknologi Mara (Terengganu), 23000 Dungun, Terengganu, Malaysia, YASIN M. ,   Department of Physics, Faculty of Science and Technology, Airlangga University, Surabaya (60115) Indonesia
Published: February 2023

Q-switched fiber laser was demonstrated by using tungsten disulfide (WS2), which was deposited onto D-shaped fiber as a passive saturable absorber (SA) to modulate the loss inside the laser cavity. The SA was produced by repeatedly dropping and drying the WS2 solution onto side-polished fiber to form a nanosheets layer. The SA is inserted into the ring laser cavity configured with a 2.4 m long Erbium-doped fiber as the gain medium to generate Q-switching pulses train operating at 1557.9 nm. The Q-switched laser produced a pulse train, which the repetition rate is tunable from 77.2 to 108.9 kHz as the pump power is increased from 84.0 to 182.9 mW. The minimum pulse width of 3.25 µs and the maximum pulse energy of 14.6 nJ was obtained at 182.9 mW pump power. The generated Q-switching pulses are stable and thus it is suitable for use in many practical applications.
SYNTHESIS OF RUTILE-TiO2 NANOROD ARRAYS FOR EFFICIENT SOLAR WATER SPLITTING VIA MICROWAVE-ASSISTED HYDROTHERMAL METHOD
Authors:   Dept. of Environment, Faculty of Science, University of Zakho, Zakho, Kurdistan Region, Iraq, QASIM A. K. , JAMIL L. A. ,   Dept. of Chemistry, Faculty of Science, University of Zakho, Zakho, Kurdistan Region, Iraq, ABDULRAHMAN A. F. ,   Dept. of Physics, Faculty of Science, University of Zakho, Zakho, Kurdistan Region, Iraq
Published: February 2023

Using a microwave-assisted hydro thermal method (MWAHM) a single crystalline of vertically aligned TiO2 nanorod (NR) arrays has been achieved via the novel ultra-rapid synthetic method for the production. High-quality NR arrays with controlled film thickness were achieved with fine control of the growth conditions as well. The effect of the different reaction conditions of MWAHM such as reaction time and growth temperature on the morphology, crystal orientation, and photo catalytic activity have been systematically investigated. In a typical condition of the MWAHM using 0.4 cm3 of titanium(IV) n-butoxide (TBO) at 180 °C for 40 minutes, a small diameter of 124 nm and short length 2.93 µm of TiO2 nanorods, are grown on fluorine-doped tin oxide (FTO) substrate. However, the photo current density produced TiO2 NRs of 2.90 mA cm-2 with a maximum photo conversion efficiency of about 2.7% which confers excellent photoelectrochemical performance. In comparison with the typical hydro thermal method (HM) synthesized NRs, the ultra-fast MWAHM synthesized NRs offers five times more efficiency photoelectrochemical (PEC) water splitting than the hydro thermal method (HM). The results suggest that these dense and aligned one-dimensional TiO2 nanorods are promising for hydrogen generation from water splitting based on PEC cells.
ACETYLACETONATE HYDROUS ZIRCONIUM(IV) COMPLEXES SUPPORTED ON HYDROPHILIC POLYMERS AS NEW SELECTIVE GROWTH PRECURSORS OF MONOCLINIC AND TETRAGONAL ZIRCONIUM OXIDE NANOCRYSTALS
Authors:   Los Lagos University Center, University of Guadalajara, Lagos de Moreno, Jalisco, Mexico, PÉREZ-TAVARES J. A. , PATAKFALVI R. ,   Los Lagos University Center, University of Guadalajara, Lagos de Moreno, Jalisco, Mexico, ORTIZ-FRADE L. ,   Center of Research and Technological Development in Electrochemistry S.C. Parque Tecnológico Querétaro, Sanfandila, Pedro de Escobedo, C.P. 76703. Querétaro, Mexico, FRAUSTO-REYES C. ,   Optical Research Center, Aguascalientes Campus, Aguascalientes, Mexico, SAAVEDRA-ARROYO Q. E. ,   Technological Institute of Irapuato, Materials Science Department, Irapuato, Guanajuato, Mexico, PÉREZ-LADRÓN DE GUEVARA H. ,   Los Lagos University Center, University of Guadalajara, Lagos de Moreno, Jalisco, Mexico, CASTAÑEDA-CONTRERAS J. ,   Los Lagos University Center, University of Guadalajara, Lagos de Moreno, Jalisco, Mexico, MARAÑÓN-RUIZ V. F. ,   Los Lagos University Center, University of Guadalajara, Lagos de Moreno, Jalisco, Mexico
Published: February 2023

Pure ZrO2 nanocrystals were successfully prepared from three new complexes of hydrous zirconium acetylacetonate ([Zr2(AcAc)•4H2O]2, [Zr2(AcAc)-PEI•nH2O]2 and [Zr2(AcAc)- PDDAC•nH2O]2), obtained using solvothermal synthesis. The addition of poly(ethyleneimine) (PEI) and poly(diallyldimethylammonium chloride) (PDDAC) hydrophilic polymers as stabilizing agents, had impact on the size and crystalline phase of the calcinated products within a range of 300 to 800 °C, obtaining ZrO2 nanoparticles with tetragonal and/or monoclinic structure and diameters of 5 to 20 nm. The synthesized precursor complexes and ZrO2 were characterized by thermogravimetry (TGA), differential scanning calorimetry (DSC), X-ray diffraction (XRD), UV-Vis spectroscopy, Fourier transformed infrared spectroscopy (FT-IR/FIR) and Raman spectroscopy.
PVA:PEDOT:PSS:CARBON BASED NANO-COMPOSITES FOR PRESSURE SENSOR APPLICATIONS
Authors:   Department of Polymer and Petrochemical Industries, College of Materials Engineering, University of Babylon, Babil, Iraq, HASAN A. S. , KADEM B. Y. ,   Renewable Energies department, College of Renewable Energies and Environmental Sciences, Al-Karkh University of Science,Baghdad, Iraq, AKRAA M. A. ,   Department of Polymer and Petrochemical Industries, College of Materials Engineering, University of Babylon, Babil, Iraq, HASSAN A. K. ,   Material and Engineering Research Institute, Sheffield Hallam University, Sheffield, UK
Published: February 2023

A novel pressure sensor, PVA:PEDOT:PSS: carbon-based nanocomposites has been characterized by different physical analyses and measurements. Through SEM and optical images, we notice that carbon-based materials to the PVA/PEDOT: PSS solutions change the shape of the surface and its mechanical characteristics in addition to the change of resistance and be the highest possible at carbon black (7.98 x 10-1). XRD results show that the PVA/PEDOT:PSS: MWCNTs composite has the highest value of the strain (s= - 0.0753) and the lowest value for grain size (G = 1.03456 nm). The adhesion properties, the casted drops solutions have high adhesion properties.
STRUCTURAL, MAGNETIC AND OPTICAL PROPERTIES OF Co0.5Ni0.5Fe2O4 NANOPARTICLES SYNTHESIZED BY SOL-GEL AUTO COMBUSTION METHOD
Authors:   University of Garmian, College of Education, Department of Physics, Kurdistan region, Iraq, MOHAMMAD A. M. , MOHAMMED M. M. ,   University of Garmian, College of Education, Department of Chemistry, Kurdistan region, Iraq, HUSSEIN L.A. ,   Baghdad University, College of Science, Department of Astronomy and Space, Baghdad, Iraq
Published: February 2023

In the present study, Co0.5Ni0.5Fe2O4 ferrite nanoparticles have been synthesized using solgel auto combustion method. The effects of calcination temperature on structural, magnetic and optical properties have been investigated. X-ray diffraction (XRD) and fourier transform infrared spectroscopy (FT-IR) have confirmed the formation of a spinal type of ferrite structure. The average crystallite size of the ferrite samples was between 43.672 and 61.795 nm, which was found to be dependent on the calcination temperature. Morphology studies demonstrated by field emission scanning electron microscopy (FESEM) showed that the grain size increases as the calcination temperature increase. Energy dispersive spectrum (EDS) has also confirmed the presence of Co, Ni, Fe, and O in all samples. The band-gap energy (Eg) has been evaluated using diffuse reflectance spectra (DRS). As the calcination increased, the Eg decreased from 2.388 to 2.055 eV. Furthermore, magnetization measurements for the as-burnt and calcined samples were measured by a vibrating sample magnetometer (VSM), the results showed ferrimagnetic behavior for all samples. Saturation magnetization (MS) increases from 46.1291 to 61.5354 emu/g as the calcination temperature increase. This behavior is related to spin canting and disorder in the surface spin, meanwhile, coercivity values (Hc) of all ferrite samples decrease from 1595 to 558.15 Oe with the increase of the calcination temperature. The squareness ratio (S) lies between 0.50 and 0.56 and the nanoparticles have exchangecoupled interaction.
TiO2 DOPED PDPP3T NANOCOMPOSITE THIN FILM FOR PHOTOVOLTAIC APPLICATION
Authors:   Physics Department, Universiti Teknologi Malaysia, 81310 UTM Johor Bahru, Johor, Malaysia, QADER O. B. , RUISHENG Y. ,   Physics Department, Universiti Teknologi Malaysia, 81310 UTM Johor Bahru, Johor, Malaysia, CHAUDHARY K. ,   Physics Department, Universiti Teknologi Malaysia, 81310 UTM Johor Bahru, Johor, Malaysia, MUHAMMAD F. F. ,   Soft Materials and Devices Research Group, Department of Physics, Faculty of Science and Health, Koya University, 045 Koya, Kurdistan Region, Iraq, YAHYA M. Y. ,   Center for Advanced Composite Materials, Institute for Vehicle Systems & Engineering, Faculty of Mechanical Engineering, Universiti Teknologi Malaysia, 81310 Johor Bahru, Johor, Malaysia, AHMAD M. R. ,   Dept. of Control and Mechatronics Engineering, Faculty of Electrical Engineering, Universiti Teknologi Malaysia, 81310 Johor Bahru, Johor, Malaysia, ISMAIL F. D. ,   Physics Department, Universiti Teknologi Malaysia, 81310 UTM Johor Bahru, Johor, Malaysia, ALI J. ,   Physics Department, Universiti Teknologi Malaysia, 81310 UTM Johor Bahru, Johor, Malaysia
Published: February 2023

In present work, an inorganic dopant TiO2 nanoparticles are introduced into the PDPP3T polymer host material and deposited as thin films via spin coating. Different solvent are investigated to get efficient dispersion of TiO2 nanoparticles as well as effective dissolution of PDPP3T material. The role of TiO2 particles towards optical absorption of PDPP3T material is studied by preparing different PDPP3T/TiO2 blend ratios and annealed at different temperatures. Toluene is found an efficient solvent for the dispersion of TiO2 nanoparticles as well as dissolution of PDPP3T material. Significant increase in optical absorption in UV region 300-400nm is observed for the PDPP3T/TiO2 blend ratio 1:0.2 and the annealing temperature 310oC. The deposited thin film with four layers have demonstrated significant blue shift in peak wavelength and increase in the absorption in UV region (300-400nm). XRD analysis reveals amorphous nature of all deposited thin film. No significant variations in chemical structure are observed with increase in thickness of deposited layer. The addition of TiO2 particle in PDPP3T material significantly enhanced the optical absorption in UV region.