bluuebunny/crossref_metadata_2025 huggingface dataset:
A DISCUSSION ON THE KAZAKH ENERGY CRISIS OF 2021: THE ROLE OF CRYPTOCURRENCY MINING FACTORIES AND THE ENVIRONMENTAL IMPLICATIONS
Authors: Basile Giuseppe
Published: May 2022

This work investigates the factors determining the Kazakh energy crisis which occurred in the second half of 2021. From the correlation observed among some data gathered to the purpose of the analysis, the relevant role played in this by cryptocurrency mining factories is identified. Beginning from June 2021, a massive number of them were relocated to Kazakhstan from the Popular Republic of China (PRC) because of normative restrictions introduced by the latter. The work also develops a reflection aimed at understanding the economic and environmental impact which has been produced by this relocation. The descriptive analysis will proceed as follows: the first section of the article will focus on the regulation of cryptocurrencies; the second section will focus on final electricity consumption and sup-porting empirical evidence and is closely related to the third and last section; the latter will focus on primary macro-economic indicators in relation to the increase in CO2 emissions in the Kazakh republic. To this end, it is useful to demonstrate a correlation between the energy crisis, the transfer of cryptocurrency mining to Kazakhstan, and to fuel the discussion regarding the need for a supranational institution with the aim of codifying a common international legislation, thus reinforcing the efforts made so far in this direction. Present and future implications and scenarios de-rived by the analysis are also introduced.
ALMA Observations of Molecular Complexity in the Large Magellanic Cloud: The N 105 Star-forming Region
Authors: Sewiło Marta , Cordiner Martin , Charnley Steven B. , Oliveira Joana M. , Garcia-Berrios Emmanuel , Schilke Peter , Ward Jacob L. , Wiseman Jennifer , Indebetouw Remy , Tokuda Kazuki , van Loon Jacco Th. , Sánchez-Monge Álvaro , Allen Veronica , Chen C.-H. Rosie , Hamedani Golshan Roya , Karska Agata , Kristensen Lars E. , Kurtz Stan E. , Möller Thomas , Onishi Toshikazu , Zahorecz Sarolta
Published: May 2022

The Large Magellanic Cloud (LMC) is the nearest laboratory for detailed studies on the formation and survival of complex organic molecules (COMs), including biologically important ones, in low-metallicity environments—typical of earlier cosmological epochs. We report the results of 1.2 mm continuum and molecular line observations of three fields in the star-forming region N 105 with the Atacama Large Millimeter/submillimeter Array. N 105 lies at the western edge of the LMC bar with ongoing star formation traced by H2O, OH, and CH3OH masers, ultracompact H ii regions, and young stellar objects. Based on the spectral line modeling, we estimated rotational temperatures, column densities, and fractional molecular abundances for 12 1.2 mm continuum sources. We identified sources with a range of chemical makeups, including two bona fide hot cores and four hot core candidates. The CH3OH emission is widespread and associated with all the continuum sources. COMs CH3CN and CH3OCH3 are detected toward two hot cores in N 105 together with smaller molecules typically found in Galactic hot cores (e.g., SO2, SO, and HNCO) with the molecular abundances roughly scaling with metallicity. We report a tentative detection of the astrobiologically relevant formamide molecule (NH2CHO) toward one of the hot cores; if confirmed, this would be the first detection of NH2CHO in an extragalactic subsolar metallicity environment. We suggest that metallicity inhomogeneities resulting from the tidal interactions between the LMC and the Small Magellanic Cloud might have led to the observed large variations in COM abundances in LMC hot cores.
SILVERRUSH. XII. Intensity Mapping for Lyα Emission Extending over 100–1000 Comoving Kpc around z ∼ 2−7 LAEs with Subaru HSC-SSP and CHORUS Data
Authors: Kikuchihara Shotaro , Harikane Yuichi , Ouchi Masami , Ono Yoshiaki , Shibuya Takatoshi , Itoh Ryohei , Kakuma Ryota , Inoue Akio K. , Kusakabe Haruka , Shimasaku Kazuhiro , Momose Rieko , Sugahara Yuma , Kikuta Satoshi , Saito Shun , Kashikawa Nobunari , Zhang Haibin , Lee Chien-Hsiu
Published: May 2022

We conduct intensity mapping to probe for extended diffuse Lyα emission around Lyα emitters (LAEs) at z ∼2−7, exploiting very deep (∼26 mag at 5σ) and large-area (∼4.5 deg2) Subaru/Hyper Suprime-Cam narrowband (NB) images and large LAE catalogs consisting of a total of 1540 LAEs at z = 2.2, 3.3, 5.7, and 6.6 obtained by the HSC-SSP and CHORUS projects. We calculate the spatial correlations of these LAEs with ∼1–2 billion pixel flux values of the NB images, deriving the average Lyα surface brightness (SBLyα
) radial profiles around the LAEs. By carefully estimating systematics such as fluctuations of sky background and point-spread functions, we detect Lyα emission at 100–1000 comoving kpc around z = 3.3 and 5.7 LAEs at the 3.2σ and 3.7σ levels, respectively, and tentatively (=2.0σ) at z = 6.6. The emission is as diffuse as ∼10−20–10−19 erg s−1 cm−2 arcsec−2 and extended beyond the virial radius of a dark matter halo with a mass of 1011
M
⊙. While the observed SBLyα
profiles have similar amplitudes at z = 2.2–6.6 within the uncertainties, the intrinsic SBLyα
profiles (corrected for the cosmological dimming effect) increase toward high redshifts. This trend may be explained by increasing hydrogen gas density due to the evolution of the cosmic volume. Comparisons with theoretical models suggest that extended Lyα emission around an LAE is powered by resonantly scattered Lyα photons in the CGM and IGM that originate from the inner part of the LAE and/or neighboring galaxies around the LAE.
Integrative taxonomy supports two new species of Chimarra Stephens, 1829 from Brazil (Trichoptera: Philopotamidae)
Authors: Moreira Paula Dias , Dumas Leandro Lourenço , Rozo María Paula , Desidério Gleison Robson , Takiya Daniela Maeda
Published: May 2022

Chimarra Stephens, 1829 is the largest genus of the Philopotamidae with about 930 species and cosmopolitan distribution. Recent taxonomic revisions have subdivided the genus into four subgenera: Chimarra, Curgia Walker, 1860, Chimarrita Blahnik, 1997, and Otarrha Blahnik, 2002, the last three restricted to the New World. In this paper, we describe and illustrate two new species of Chimarra from Brazil, C. (Otarrha) paraodontasp. nov. from Rio de Janeiro State and C. (Chimarrita) truncatasp. nov. from Amazonas and Pará states. Partial sequences of cytochrome oxidase subunit I (COI, DNA barcodes) were generated and integrated with morphological evidence to delimit the new species and evaluate their phylogenetic relationships within the genus. A maximum likelihood analysis of 48 COI sequences representing 19 species of Chimarra corroborated their subgeneric assignment based on morphology and highlighted their putative sister species. Both new species showed high K2P divergences when compared to their sister species: Chimarra (O.) paraodontasp. nov. and C. (O.) odonta (17.4–21.3%) and Chimarra (C.) truncatasp. nov. and C. (C.) simpliciforma (20.0–21.3%). These distances are comparable to the range of interspecific distances calculated for the whole genus (13.6–22.7%), adding support to their description as new species. This analysis was especially important because of the high morphological similarity of C. paraodontasp. nov. and C. odonta. Finally, analysis of the sequences of Chimarra odonta suggests that the nominal species may represent a complex of cryptic species with high intraspecific divergences (up to 18.1%), with at least two of those lineages co-occurring with C. paraodontasp. nov. at Parque Nacional do Itatiaia.
Raveniola yangren sp. n., a new troglobiontic spider from Hunan, China (Araneae, Nemesiidae)
Authors: Lin Ye-Jie , Yan Xunyou , Li Shuqiang
Published: May 2022

Troglomorphism is rare known in Mygalomorphae. Only three troglomorphic mygalomorphs have been recorded in China: Raveniola beelzebub Lin & Li, 2020, R. lamia Yu & Zhang, 2021 and Sinopesa gollum Lin & Li, 2021.

A new troglobiontic species of the genus Raveniola is described from China: R. yangren sp. n. (female) from Hunan. Photos and morphological description of the new species are given.This new species has elongated appendages and degenerated eyes in order to adapt to the cave environment. It can be distinguished by the stubby, unbranched spermathecae from other Raveniola.
Kolmogorov algorithm for isochronous Hamiltonian systems
Authors: Mastroianni Rita , Efthymiopoulos Christos
Published: May 2022

We present a Kolmogorov-like algorithm for the computation of a normal form in the neighborhood of an invariant torus in 'isochronous' Hamiltonian systems, i.e., systems with Hamiltonians of the form $ {\mathcal{H}} = {\mathcal{H}}_0+\varepsilon {\mathcal{H}}_1 $ where $ {\mathcal{H}}_0 $ is the Hamiltonian of $ N $ linear oscillators, and $ {\mathcal{H}}_1 $ is expandable as a polynomial series in the oscillators' canonical variables. This method can be regarded as a normal form analogue of a corresponding Lindstedt method for coupled oscillators. We comment on the possible use of the Lindstedt method itself under two distinct schemes, i.e., one producing series analogous to those of the Birkhoff normal form scheme, and another, analogous to the Kolomogorov normal form scheme in which we fix in advance the frequency of the torus.
Enlarged Zn Content Improves Fatigue Crack Propagation Resistance of Two Al-Zn-Mg-Cu Alloys with Multiple Aging Tempers
Authors: Wen Kai , Xiong Bai Qing , Ren Wei Cai , Tong You Zhi , Zhu Kai
Published: May 2022

Fatigue crack propagation is closely associated to the chemical composition of Al-Zn-Mg-Cu alloys. In this work, two Al-Zn-Mg-Cu alloys with a variation of zinc content was investigated and multiple aging treatments were exerted on them and a same regime was selected for further fatigue analysis by tensile property tests. The corresponding precipitation characteristics and fracture surface were observed. The results showed that the alloy with lower zinc content (LZ alloy) possessed an inferior strength value compared with the alloy with higher zinc content (HZ alloy) under the same three stage aging treatments while the elongation had no obvious difference. In contrast, the LZ alloy had a higher fatigue crack propagation rate than the HZ alloy. The observation of fracture surface also proved it. The precipitation observation demonstrated that both had GP zones and η' phase, which possessed the majority. Quantitative analysis of precipitates exhibited that the HZ alloy had a larger proportion of large size precipitates than the LZ alloy. The mechanism of the interaction between dislocation and precipitate was employed to elaborate the difference.
Study Regarding the Evaluation of Prediction Models for Determining the Concrete Compressive Strength Using Non-Destructive Testing (NDT) Data: Validation Stage
Authors: Bolborea Bogdan , Dan Sorin , Baeră Cornelia , Gruin Aurelian , Enache Felicia , Perianu Ion Aurel
Published: May 2022

In the evaluation of an existing reinforced concrete structure, a fundamental issue is determining the concrete compressive strength as accurately as possible. This process can be conducted by using destructive and non-destructive methods. The destructive method presumes a limited number of cores extracted from the concrete structure. A higher number of cores would affect the structural safety and is time and resource consuming. Therefore, the conclusions drawn using exclusively this method can also generate errors in correctly estimating the load bearing capacity of a structure, thus leading to the possibility of implementing deficient measures in order to ensure a structural safety. Data obtained via non-destructive methods are more comprehensive. Due to their non-destructive nature, there are no limitations regarding the number of elements investigated and are fast in delivering results. One of the main concerns of researchers in this field is developing a direct relationship between the measured indicators through non-destructive testing (NDT) methods and concrete compressive strength. Over the years different equations with different mathematical structure (linear, polynomial, power, exponential and logarithmic) were developed with the main purpose of delivering fast and accurate results concerning concrete compressive strength by the means of NDT. The aim of this paper is to validate some of the most important prediction models using an original set of data. The database consists in a number of 96 concrete cores that were subjected to Ultrasonic Pulse Velocity (UPV) and Schmidt Rebound Hammer (SRH) testing. The accuracy of the results was determined by using two statistical parameters the mean absolute error (MAE) and mean absolute percentage error (MAPE). The proposed equations have been analyzed in terms of prediction and dispersion of values. It was noticed that some of the formulations predict values that are higher than the ones obtained destructively, others provide a larger dissipation of values, while some equations deliver a compact distribution of results with higher rate in terms of accuracy. This study proposes a data validation of some of the most popular empirical equations, used for the estimation of the concrete compressive strength, elaborated through the years, using a new set of data.
Improving the Fatigue Behaviour of PURMAL S-70 Polyurethane Paint
Authors: Murariu Alin Constantin
Published: May 2022

Oxidation is one of the main degradation mechanisms that affects most industrial components and occurs as a result of a chemical reaction by which an oxygen atom is added to the molecule of an organic substance or compound. Light, in particular the ultraviolet (UV) component, activates the process of degradation of organic materials, favouring a series of oxidation reactions that occur when the component is in contact with oxygen in the air or water (especially salt water).Given that a number of components work in variable mechanical stress conditions (vibrations caused by the technological process itself or generated by repeated starts / shutdowns of equipment), the protective coatings aim to improve the physico-chemical properties of the surfaces to reduce the degradation, as well as to improve the fatigue behaviour, knowing that the fatigue cracks are initiated from local stress concentrators caused by the surface imperfections of the components. Paper presents the experimental results on fatigue behaviour of the deposited layers, after exposure to UV radiation. In the experimental program, a 2 mm thick AlMg3 sheet (EN AW-5754) was used as substrate. The Aluminium oxide layer naturally created on the metal surface, prevents the effect of oxygen and atmospheric pollutants, but this layer is unstable in corrosive environments. Thus, for a qualitative protection, protective organic layers are used. In experiments, the polyurethane paint PURMAL S 70, RAL 9010 (PUR) and the same paint but aditivate with graphene oxide (PUR + GO) were compared. Prior to fatigue testing, the painted specimens were subjected to accelerated artificial UV-aging process with ultraviolet radiation for 72 hours. Axial fatigue tests were performed with a frequency of 40 Hz, in pulsating mode, with R = 0.053 and with decreasing loads, starting from 0.85% of the tensile strength (Rm), up to 0.5% Rm. Analysis of S‑N curves revealed that, in the field of oligocyclic fatigue there are no significant differences between the fatigue results obtained on PUR-protected specimens, compared to those protected with PUR + GO, instead in the case of polycyclic fatigue, the paint with addition of 1% graphene oxide has improved fatigue resistance.
Microstructural and Surface Plasmon Resonance Properties of Green-Synthesized Ag Nanoparticles Using Moringa oleifera Extract
Authors: Adrianto Nanang , Istiqomah Nurul Imani , Panre Andi Marwanti , Suharyadi Edi
Published: May 2022

Ag nanoparticles (NPs) have been successfully synthesized by the green synthesis method using Moringaoleifera (MO) extract with various incubation times (24 and 48 hours) as an active material for surface plasmon resonance (SPR) biosensor. Transmission electron microscopy analysis indicated the formation of spherical particles with an average crystal size of 29 nm. Selected area electron diffraction confirmed that Ag NPs is face-centered cubic (FCC) crystal structure. Fourier-transform infrared measurements show the band at 3330 cm-1, 2067 cm-1, 1634 cm-1 for an incubation time of 24 hours and 3328 cm-1, 2063 cm-1, 1633 cm-1 for an incubation time of 48 hours. The results prove the proteins and phenolics compound present in the MO extract responsible as reducing agents. The maximum absorption of the green-synthesized Ag NPs in the UV-Vis spectra shows the SPR band at 326 nm and 328 nm for an incubation time of 24 and 48 hours, respectively, and absorption intensity decrease with the increase of incubation time. The result shows the SPR angle shifted to the larger angle of incident light by using green-synthesized Ag NPs. However, the increased incubation time affects the angle shift to the lower angle of the SPR shift. The addition of the green-synthesized Ag NPs leads to enhance the sensitivity of the SPR biosensor.
Effect of Pre-Deformation Degree on the Mechanical Properties and Microstructural Evolution of a Novel Al-Cu-Li Alloy
Authors: Chen Peng Cheng , Li Xi Wu , Yao Yong , You Wen
Published: May 2022

Pre-deformation is usually indispensable to obtain an appropriate balance between microstructure and mechanical properties of Al-Cu-Li alloys. In this paper, the effect of pre-deformation degree on the evolution of strength, fracture toughness, and precipitates during artificial aging processes of a novel Al-Cu-Li alloy was studied. The results indicated that the amount of T1 phase increased remarkably while the precipitation of θ' phase was inhibited with the increase of pre-deformation degree. The change in the average size of T1 phase indicated that the increase in nucleation sites suppressed the full growth of T1 phases. The fracture toughness could be related to the strength difference between intragranular and intergranular. Based on the matching of properties, a reasonable pre-deformation parameter was proposed.
Improving the Performance of Cement Mortar Using Granite Powder and Nano-Silica
Authors: El Rahman B.A. Mohamed Abd
Published: May 2022

The partial replacement of cement in concrete with the addition of granite Powder and nanosilica can help to increase the performance of cement mortar in concrete. The aim of the article is to investigate the performance of granite powder and nanosilica for the sustainable production of cementitious mortars. Mechanical, physical, and durability properties of these additives were first compared with the properties of cement. Afterward, a series of mortars modified with the addition of granite powder and nanosilica was made. The properties of the fresh mixes and the mechanical properties of the hardened composites were then tested. Finally, based on the obtained results, a cost analysis of the profitability of modifying cementitious composites with granite powder or flyash was investigated. We can conclude, it should be stated that both of these materials can successfully be used for the sustainable production of cementitious composites. This conclusion has a significant impact on the possibility of improving the natural environment by reducing the amount of cement production. More sustainable production of cement-based materials could enable CO2 emissions to be decreased.
Integrated Design and Manufacturing of Aviation Aluminum Alloy Support Based on SLM Technology
Authors: Ma Da Wei , Zhang Wen Bin
Published: May 2022

Laser selective melting (SLM) is a manufacturing process that uses laser to melt metal powder layer by layer to form parts, which can realize the integrated manufacturing of complex parts. In this paper, SLM technology and topology optimization technology are combined to carry out the integrated design of the aviation aluminum alloy support . After optimization, the weight of the support is reduced by 24%, the maximum displacement is reduced by 82%, and the maximum stress is reduced by 65%. The process simulation analysis of the whole SLM forming process is carried out by using Simufact Additive software. On this basis, AlSi10Mg powder is selected for laser selective melting of the support, The forming of the whole structure meets the expectation, is in good agreement with the process simulation results, and there is no visible cracking failure.
Impurity Characterization by LA-ICP-MS in Terbium Metal after Solid State Electrotransport Purification
Authors: Zhang Xiao Wei , Miao Rui Ying , Zhong Jia Min , Li Zong An , Wu Dao Gao , Chen De Hong , Wang Zhi Qiang
Published: May 2022

Terbium metal rod with the dimension of 6.8mm in diameter and 150mm in length has been purified by solid state electrotransport (SSE) at 1050°C under a pressure of 10-5Pa for 50h, and the impurity distribution has been determined by laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS). The research results indicate that, the rare earth impurity migrates from cathode to anode of the rod, and the impurity distribution is relatively uniform in the longitudinal section; low melting point impurity of Al migrates from cathode to anode and the impurity concentration distribution is relatively uniform in the longitudinal section, the segregation degree is about 10% in each sample; the impurity with high melting point, Ta, W, Mo, etc., the distribution of above impurity is very non-uniform, for the impurity of Ta, the mean concentration of sample 7 is only 8.75 ppm, but the local concentration is up to 350 ppm, and it exists in an elementary substance form in the Tb; non-rare earth impurity in Tb metal, such as Ni, Si and Ti, migrates from cathode to anode of the rod significantly; the total impurity content in cathode end is lower than other posion, the impurty content of 22 imputies in sample 6 is 648.47 ppm, is the lowest in the Tb rod, except for the high melting point impurities, the lowest impurity content is 60.05ppm in sample 7.
Evaluating the Use of Waste Materials in Building Envelopes for Energy Efficiency: A Theoretical and Empirical Study
Authors: Hanna Christena Kamal , Mohammad Ali Abdel Monteleb , Shebl Sayed Shebl Mohamed
Published: May 2022

With the increasing interest in energy-efficient building design, building energy simulation programs are increasingly employed in the design process to help architects and engineers decide which design alternatives save energy more. This research is an empirical and analytical study using a ready-made software package to evaluate the energy efficiency performance of building envelopes using recycled waste material. These methods used available environmental alternatives material in the experiment. To verify the results, two practical cases are tested. Validation is examined by comparing experimentally measured data and computational simulation data during the same summer period time. Real cases with small-scale actual rooms that were used to generate data to validate numerical models. The focus of this study is to compare the experimental measured thermal behavior of traditional and waste materials in residential buildings with simulation results. This comparison allows determining the effect of using waste material in southern walls of a residential building at an indoor temperature during hot summer days, in which the measurements took place during June and July. Meanwhile, the results indicated that the indoor temperature of real models was higher than the temperature of simulation models with about 3°C to 6 °C at measuring time (six summer days). This increase is about o 5.4% to 11.8%. The findings also revealed that the use of waste material in the southern wall of a residential building could decrease the indoor temperature by about 0.2 - 3°C degree compared with the traditional material at the same wall. It means that waste materials in southern walls could decrease 0.9% to 4.1% of indoor temperature compared with traditional materials. This study found that the analytical and empirical small-scale models could contribute to determining the usage of waste material at southern walls of residential buildings. Also, the comparison of the results indicates that Design-Builder can predict indoor temperature to achieve thermal comfort with good accuracy and it can be used by researchers and designers to evaluate the thermal performance of buildings.
Experimental Study of RC Column Strength Restoration after Core Drilling Using Different Strengthening Techniques
Authors: Elafandy Tamer H.K. , Salem Sherif A. , Abd el-Hafez L.M. , Eid Mohamed A.
Published: May 2022

This paper presents an experimental study to investigate the effect of core drilling on the Reinforced Concrete (RC) column capacity. It also discusses how to restore the drilled RC column capacity. The experimental work consists of seven half-scale short rectangular concrete columns with cross section in width and depth equal to 160 and 300 mm, respectively. All specimens have the same column total and clear height which is equal to 1900 and 1300 mm, respectively. On loading at 40% of column load capacity, the core has been taken to stimulate what happens in nature where core is drilled in buildings. The discussion presents the different strengthening techniques for the core drilling zone to restore the un-voided column capacity, strengthen techniques such as using Carbon Fiber Reinforcement Polymer (CFRP) and anchored steel plates. The study showed good agreement of the results. Finally, recommendations are given for the reduction in the RC column load carrying capacity under the effect of core hole.
Innovative Technologies to Improve the Corrosion Resistance of Stainless Steels
Authors: Geana Alexandru Adrian , Murariu Alin Constantin , Perianu Ion Aurel , Socol Gabriel , Popescu-Pelin Gianina Florentina
Published: May 2022

Oxidation is one of the main degradation mechanisms that affects most industrial components. Stainless steels are used in components and equipment in the chemical and petrochemical industries (e.g., valves, plates, columns, capacitors and desalination units). Generally, the steels used in these applications have physical, mechanical and chemical properties that give them corrosion resistance. However, contaminants existing in the processed fluids are the main factor causing the increase in corrosion rate, leading to significant financial losses, which requires the development of innovative technologies to protect the metal from the action of aggressive environment. The paper presents two innovative surface protection techniques used to improve the corrosion resistance of stainless steels. Thus, Matrix-Assisted Pulsed Laser Evaporation (MAPLE) and Pulsed Laser Deposition (PLD) techniques are used to obtain deposition of hybrid nanostructures of binary oxides and porphyrins on W1.4034 martensitic stainless steel, according to EN 10083-3.
Spectroscopic Properties and Micro-Structure for Promising Solar Cell Application of Ruthenium-Diphenyl Carbazide (RuDPC) Complex
Authors: Hafez Marwa , El-Sayed S. , Sayed S.A.
Published: May 2022

The variation in the modes of a new ruthenium diphenyl carbazide complex (RuDPC) during changing of ruthenium (Ru) concentration within 0.01 ≤ X ≤ 0.09 in diphenyl carbazide (DPC) are investigated using IR analysis. Variation in some IR spectroscopic parameters during the increase of Ru content in pure DPC has been recorded. The variation in both the relaxation time and the rotational energy barrier for RuDPC samples at the mode 505 cm-1 supports a change that occurs at X ≈ 0.05. Micro-structure of RuDPC samples was studied by X-ray analysis and scanning electron microscopy. Moreover, SEM pictures and EDAX measurements were made revealing the strong Ru-signals indicating the presence of Ru and their distributions in the DPC matrix. Also results indicated that Ru inclusion in DPC matrix changes its morphology with a uniform distribution of Ru. Besides, X-ray diffraction patterns revealed RuDPC samples are represented by a mixture of amorphous and crystalline structure, wherever the phase-nature crystallization of RuDPC samples reinforced when the concentration of Ru is augmented. The crystal structure is changed to tetragonal structure after addition of ruthenium metal to pure orthorhombic DPC matrix. The spectroscopic properties of RuDPC complex is seemed to be dependent on its characteristics to the effect of radiation (FTIR), as a solar material in the application of this field; due to DPC is a photosensitive material, so that there are a number of optical applications which depend upon optically induced structure transition energy states for the complex.
Comparing the Effect of Ondansetron–dexamethasone and Metoclopramide–dexamethasone on Postoperative Nausea and Vomiting after Gynecological Laparoscopy
Authors: Barzanji Arvin , Nasseri Karim , Sadeghi Shahram , Ardalan Mahsa , Nouri Bijan , Daseh Khadijeh
Published: May 2022

Background:

Nausea and vomiting is a common complication after gynecological surgeries, especially laparoscopy, which can lead to discomfort and restlessness in the patients. The aim of the study was to compare the effect of ondansetron–dexamethasone and metoclopramide–dexamethasone on postoperative nausea and vomiting following gynecological laparoscopy.

Materials and Methods:

In this double-blind clinical trial, 68 females scheduled for gynecological laparoscopy and age range of 18–40 years were randomly divided into two groups. Group OD received ondansetron 4 mg plus dexamethasone 8 mg and group MD received metoclopramide 10 mg plus dexamethasone 8 mg, 15 min before the end of surgery. The incidence of nausea and vomiting and need for rescue medication was assessed during the recovery period, as well as at 2, 4, 6, 12, and 24 h after surgery. The data were analyzed using STATA software version 12 and a significance level of <0.05 was considered in this research.

Results:

The incidence of nausea in ondansetron and metoclopramide groups was 23.3% and 33.3%, respectively, and the frequency of vomiting was 10% and 16.6%, respectively, which showed no significant difference (P > 0.05). The highest incidence of nausea and vomiting in patients belonged to the metoclopramide group inside 4–6 h after surgery.

Conclusion:

Our study showed that no significant difference was observed in the incidence of nausea and vomiting between ondansetron–dexamethasone and metoclopramide–dexamethasone groups following laparoscopic gynecological surgery; however, the number of patients with nausea and vomiting was lower in the ondansetron–dexamethasone group.
Congenital Dyserythropoietic Anemia Type IV with Kruppel-Like Factor 1 E325K Mutation in a Preterm Neonate
Authors: Garegrat Reema , Patnaik Suprabha K. , Malshe Nandini , Bartakke Sandip P , Bafna Vibha , Suryawanshi Pradeep
Published: May 2022

Background:

Clinical, pathologic, and genetic heterogeneity is a challenge in identifying and classifying congenital dyserythropoietic anemia (CDA). CDA type IV, the rarest CDA with only 11 reported cases, results from KLF1 gene mutation.

Clinical Description:

A male preterm neonate presented with jaundice, anemia, pulmonary hypertension and hepatosplenomegaly in the immediate postnatal period, requiring multiple red blood cell transfusions.

Management and Outcome:

The workup for non-immune haemolytic anemia including red blood cell structural and enzymatic studies and were normal, with peripheral blood smear showing multiple polychromatic cells and numerous nucleated red blood cells including binucleate ones and fetal haemoglobin of 91.2%. Genetic testing revealed KLF1 E325K mutation suggestive of CDA type IV, though parental testing was normal, suggesting de novo mutation. The infant has been receiving packed RBC transfusion every three to four weeks initially and then every two months. The baby is now of twelve months of age, and receives oral vitamin B12 and folic acid supplementation for ineffective erythropoiesis. Though his weight is in the 3rd centile for age and height, he has been developmentally normal.

Conclusions:

Our report, the first description of a CDA type IV diagnosis in the neonatal period, adds to the limited knowledge of this disorder, which we also comprehensively review. The report highlights the phenotype of the disorder and the importance of neonatal genetic testing in a case of transfusion dependent anemia, having ruled out other causes.
Adölesanlarda Siber Zorbalık, İnternet Bağımlılığı ve Algılanan Stres
Authors: SEZER EFE Yağmur , ERDEM Emine , CANER Nuray , ŞENER TAPLAK Ayşe , BAŞDAŞ Öznur , BAYAT Meral
Published: May 2022

Amaç: Araştırma, adölesanların siber zorbalık, internet bağımlılığı ve algılanan stres düzeylerinin incelenmesi amacı ile yapılmıştır.Yöntem: Bu tanımlayıcı araştırma, 2019-2020 eğitim öğretim yılında, İç Anadolu Bölgesi’nde bulunan bir ilin İl Milli Eğitim Müdürlüğü’ne bağlı liselerin 9-12. sınıflarında öğrenim gören 441 adölesan ile yapılmıştır. Veriler; Adölesanlar için Tanıtıcı Özellikler Formu, Siber Zorbalık ve İnternet Saldırganlığı Tarama Anketi, İnternet Bağımlılığı Ölçeği (İBÖ) ve Algılanan Stres Ölçeği (ASÖ-10) ile toplanmıştır. Verilerin değerlendirilmesinde, sayı, yüzde, Ortalama±SS, minimum (min), maksimum (maks), Mann Whitney-U, Anova, Spearman Korelasyon, Lineer Regresyon Analizi kullanılmıştır. Bulgular: Çalışmaya katılan adölesanların siber zorba kurbanı olma (SZKO) ve siber zorba olma (SZO) puanları arasında orta düzeyde pozitif bir ilişki vardır (p<0.01). Adölesanların SZKO ve SZO puanları ile İBÖ ve ASÖ-10 puanları arasında düşük düzeyde pozitif bir ilişki bulunmuştur (p<0.01). Ayrıca SZO puanları ile SZKO puan ortalamaları ve SZO frekans ortalamaları arasında ilişki olduğu ve SZO ölçeğinden aldıkları puanların %49’unu açıkladığı bulunmuştur.Sonuç: Çalışmaya katılan adölesanların internet bağımlılıkları düşük, algılanan stres düzeyleri yaklaşık orta düzeydedir. Adölesanların siber zorbalık davranışları arttıkça, internet bağımlılıkları ve algılanan stresleri de artmaktadır.
Geriatrik Bakımda İhmal Edilen Sorun: Tinnitus ve Hemşirelik Bakımı
Authors: GÖKÇE ESKİN Serap
Published: May 2022

Tinnitus yaşlı bireylerde sık görülen bir sorundur. Etyolojisinde metabolik hastalıklar, travma, gürültüye maruz kalma, beslenme yetersizlikleri, ileri yaş bulunan tinnitusun etkin bir tedavisi bulunmamaktadır. Tinnitusun işlevsel bozulma, kaygı ve düşük uyku kalitesi ile ilişkisi, yaşlılar için kapsamlı bir sağlık bakım gereksinimini ortaya çıkarmaktadır. Hemşirelerin tinnitusu olan yaşlıya etkin bakım vermesi bu gereksinimleri karşılayacaktır. Bu makalede yaşlı bireylerin yaşamını olumsuz etkileyen tinnitusu yönetebilmeleri için geliştirilmiş hemşirelik bakım stratejileri tartışılmaktadır.
İnme Hastalarında Kısıtlayıcı Zorunlu Hareket Tedavisi Temelli Telerehabilitasyon Uygulamaları
Authors: SAYGILI Fettah , ELDEMİR Sefa , GÜÇLÜ GÜNDÜZ Arzu
Published: May 2022

İnme sonrası üst ekstremitede meydana gelen fonksiyonel bozukluklar hastaların günlük yaşamlarını büyük oranda etkilemektedir. İnme sonrası üst ekstremitede fonksiyonel geri dönüşü hedefleyen pek çok yaklaşım bulunmaktadır. Bobath, Kısıtlayıcı Zorunlu Hareket Tedavisi (KZHT), Proprioseptif Nöromusküler Fasilitasyon (PNF) gibi nörogelişimsel yaklaşımlar başta olmak üzere, sanal gerçeklik, robotik rehabiliasyon ve telerehabilitasyon gibi teknoloji temelli yaklaşımlar bu yaklaşımların başında gelmektedir. Literatürü incelediğimizde bu yaklaşımlar arasında kanıt düzeyi en yüksek yöntem KZHT’dir. KZHT kanıt değeri yüksek, klinik çıktıları çok fazla olduğu bilinen bir yöntem olsa da Covid-19 pandemisinin yaşamlarımıza girmesi ve yüz yüze fizyoterapi uygulamalarının riskli hale gelmesi ile akla gelen en önemli soru bu yaklaşımın telerehabilitasyon yolu ile aynı etkin sonuçlar elde edecek şekilde uygulayıp uygulayamayacağımız olmuştur. Araştırmacıların pandemi öncesinde de bu soruyu sordukları ve pilot çalışmalar seviyesinde olsa da bazı çalışmaları başlattıkları görülmektedir. Bu derlemenin amacı KZHT’nin ve telerehabilitasyonun temel prensiplerini incelemek ve bu iki uygulamanın kombinasyonu ile ilgili literatür incelemesi yaparak sunmaktır.
Sağlık Profesyonellerinde İş Doyumu ve Tükenmişlik Arasındaki İlişkinin İncelenmesi: Büyükşehir Belediyesi Örneği
Authors: KODAMAN Nurseda , KIZILKAYA Mehtap
Published: May 2022

Amaç: Bu çalışmada, bir büyükşehir belediyesinde çalışan sağlık profesyonellerinde iş doyumu ve tükenmişlik arasındaki ilişkinin incelenmesi amaçlanmıştır.Yöntem: Kesitsel tipte yürütülen araştırmanın verileri 15 Kasım 2017-15 Ocak 2018 tarihleri arasında toplanmıştır. Araştırmanın örneklemini verilerin toplandığı tarihte çalışmaya katılmayı kabul eden 109 sağlık profesyoneli oluşturmuştur. Verilerin toplanmasında; “Sosyo-demografik Bilgi Formu”, “Maslach Tükenmişlik Ölçeği (MTÖ)” ve “Minnesota İş Doyumu Ölçeği (MİDÖ) kullanılmıştır.Bulgular: Araştırmadan elde edilen bulgulara göre, MTÖ alt boyutlarından duygusal tükenme ve duyarsızlaşma düzeyleri sağlık çalışanlarının içsel doyum, dışsal doyum ve genel doyumunu azaltırken, kişisel başarı hissi alt boyutunun içsel doyum, dışsal doyum ve genel doyum düzeyini arttırdığı saptanmıştır.Sonuç: Sağlık profesyonellerinin tükenmişliğini azaltacak ve iş doyumunu arttıracak hem bireysel hem de kurumsal düzenlemeler yapılması önerilmiştir.
Kronik Karaciğer Hastalığı Nedeniyle Karaciğer Nakli Yapılan Çocuklarda Malnütrisyonun Değerlendirilmesinde Antropometrik Ölçümler ve Büyüme Faktörleri
Authors: ÖZBAY HOŞNUT Ferda , OZCAY Figen , CANAN Oğuz , OLGAC Asburce , HABERAL Mehmet
Published: May 2022

Amaç: Kronik karaciğer hastalığı, özellikle insülin benzeri büyüme faktörü-1 (IGF-1) ve insülin benzeri büyüme faktörü bağlayıcı protein-3 (IGF-BP3) başta olmak üzere büyüme faktörü proteinlerinin yapı ve işlevindeki değişikliklerle birlikte çocuklarda büyüme geriliğine neden olur. Bu çalışmanın amacı, antropometrik parametreler (AP) ve büyüme faktörü proteinlerini kullanarak karaciğer nakli (LT) yapılan kronik karaciğer hastalığı olan çocuklarında beslenme durumunu değerlendirmektir.Yöntem: Karaciğer nakli uygulanan 33 hasta ve 54 sağlıklı çocuk değerlendirildi. Hastaların AP'leri karaciğer nakli öncesi ve nakilden 1, 3, 6 ve 12 ay sonra değerlendirildi. Antropometrik parametreler, IGF-1/IGFBP-3 düzeyleri ve Child-Pugh skorları arasındaki ilişki analiz edildi.Bulgular: Kronik karaciğer hastalığı olan çocuklarda, nakil öncesi boya göre ağırlık (WFH) dışındaki tüm antropometrik ölçümler kontrol grubuna göre daha düşüktü (p<0.05). Child-Pugh skoru ile triseps deri kıvrım kalınlığı (TSF) (r=-0.387, p=0.026) ve orta-üst kol çevresi (MUAC) Z-skoru (r=-0.448, p=0.009) arasında negatif bir ilişki vardı. IGF-I ve IGFBP-3 düzeyleri, nakil öncesi hasta grubunda ortalama 35.24±14.68 ng/ml ve 1.31±0.9 µg/ml olup, kontrol grubundan daha düşüktü (69.88±67.45 ng/ml ve 3.2±1µg/ml) (sırası ile p=0.001 ve p=0.000). 12 ay sonra, hasta grubunun yaşa göre boy Z skoru (HFA) (-0.7±1.46) kontrol grubundan daha düşük (0.08±0.9) (p=0.01) iken, TSF Z skoru (0.24±0.8) ve orta kol kas alanı (MAMA) (20.67±20.28) kontrol grubundan daha yüksekti (p=0.009, p=0.004). IGF-1 ve IGFBP-3 düzeyleri nakil öncesi dönemden daha yüksekti (p=0.000). IGF-1 ve IGFBP-3 seviyeleri ile AP arasında ilişki saptanmadı.Sonuç: Kronik karaciğer hastalığı nedeniyle karaciğer nakli yapılan hastalarda malnütrisyon takibinde antropometrik parametreler IGF-1 ve IGFBP-3'e göre daha güvenilirdir.
Multiple Stuck At Fault Diagnosis System For Digital Circuit On FPGA Using Vedic Multiplier and ANN
Authors: Islampurkar Mangesh , Gunale Kishanprasad , Somani Sunil , Bagade Nikhil
Published: May 2022

In an electronics circuit, the presence of a Fault leads to undesired or unexpected results. The output of many nodes on the circuit is changed due to the presence of the Fault at one node. So, it is necessary to detect the nature of the Fault present in a particular faulty node. To detect the fault present in the digital circuit, it is necessary to understand logical behavior using mathematical modeling. After the successful modeling, parameters are extracted, and the database is generated. The mathematical model uses Hebbian Artificial Neural Network algorithms [1] [2]. The database generated is used by the fault detection system to find the masked and multiple faults. A fault detection system monitors the faults present in the test circuit and finds the origin and nature of the Fault [3] [4]. The database generated for single stuck-at faults is used to find the multiple faults present in the faulty circuit. In this paper, Modified Vedic Multiplication [5] [4] method is used to optimize the utilization of the proposed system. In this proposed design multiplier of {N x N} bit input and {N} bit output is used, due to which device utilization is decreased, which is the expected outcome from the design. This system is designed using ISE Design Suite and implemented on Spartan-6 FPGA [6] [7].
Öğretmen Adaylarının Deprem Farkındalığına İlişkin Görüşleri
Authors: BİLEN Elif , POLAT Merve
Published: May 2022

Araştırmanın amacı öğretmen adaylarının deprem farkındalığına ilişkin görüşlerini ortaya çıkarmaktır. Nitel araştırma yöntemlerinden olgu bilim deseni kullanılmıştır. Veriler açık uçlu sorular yoluyla toplanıp, betimsel analiz tekniğiyle çözümlenmiştir. Araştırmanın bulgularına göre öğretmen adaylarının depremi bilimsel anlamıyla tanımladığı ve depremin neden olduğu ikincil afet türlerinin farkında olduğu gözlenmiştir. Yer-büyüklük-zaman bilgilerini veren deprem tahmininin henüz tam olarak mümkün olmadığı konusunda farkındalık olduğu anlaşılmıştır. İnsanların depreme karşı bilinçlenmesinde uygulamalı eğitici faaliyetlere katılmanın etkisinin daha fazla olduğunu vurgulayan öğretmen adaylarının, ülkemizde yaşanan yıkıcı depremleri hatırladıkları, sivil toplum kuruluşlarını (STK) tanıdıkları, deprem afetiyle ilgili eğitimlerin, haberlerin, filmlerin yapılmasının, bilinçlenme sağlamada etkili olduğunu düşündükleri belirlenmiştir. Deprem farkındalığının öğretmen adaylarının zihinlerinde kalıcı hale getirilmesi için eğitimlerde uygulamalı yöntemler kullanılmalı, bilimsel etkinliklere ve tatbikatlara katılım sağlanmalı, toplanma yerlerini ve faydalı bilgileri gösteren “eAFAD”, “AFAD Acil” gibi mobil uygulamalar tanıtılmalıdır.
Christian Mission, Spiritual Leadership and Personality Development of the Digital Generation
Authors: Gultom Joni Manumpak Parulian , Paat Vicky Baldwin Goldsmith Dotulong , Harefa Otieli
Published: May 2022

Spiritual leadership has experienced a significant correction of service responsibilities for God's church. Several reasons are advances in information technology, social media, and financial problems. On the other hand, the digital generation is the majority of the congregation. The facts show that 6 out of 10 people (59%) leave the Christian faith in the first decade of adulthood, and the number 44% - 52% do not go to church. The personality of the digital generation tends to be eroded, while the church leadership seems to have lost the enthusiasm to reach them. The question is how to build the resilience of spiritual leaders in the digital age? What kind of implications and approaches in developing the personality of the Digital Generation can take? The purpose is to describe the steps to build spiritual leadership resilience and explain the implications and mission approaches of digital generation personality development. Research is a qualitative descriptive method. The results are building Spiritual Leadership Resilience by upgrading oneself in contemporary leadership, building friendships, synergizing with other spiritual practitioners, and building worship praise as a medium for spiritual experience. The implications for the digital generation are: Developing the three vocations of the church, building intergenerational relationships and leadership spirit, generating gifts and role effectiveness, and emphasizing the meaning and fulfillment of future leadership functions.
Christian Teacher and Anti-Materialistic Actualization according to the Gospel Matthew 6:19-24
Authors: Adi Saingo Yakobus
Published: May 2022

This study aims to examine the actualization of anti-materialistic according to Matthew 6:19-21, 24 in the Christian teaching profession. Empirically, there are problems related to materialistic behavior among teachers and students in the school environment of SMP N 11 Kupang City, which negatively impacts personality, relationships, and educational institutions. The study explores the origin of this materialistic phenomenon by observing the materialistic character and behavior, especially regarding the factors behind the formation of this behavior. It makes Matthew 6:19-21, 24 the focus of analysis. The research method used is the descriptive qualitative method. The subjects of this study were teachers of Christian Religious Education at SMP N 11 Kupang City. The study results show that this materialistic behavior can only be dammed and eroded through the re-establishment of self-values ?? and the presence of a biblical perspective that underlies daily attitudes and behavior.
The Development of Pasar Rabu Tani Android Based Application
Authors: Azmi Meri , Sonatha Yance , Sa'adiyah Siti
Published: May 2022

Pasar Rabu Tani is a business organized by the Koperasi Mandiri dan Merdeka (KMDM) which consists of a number of Andalas University academics which aims to provide healthy food needs to consumers. So far, in marketing its products, KMDM uses various media platforms such as whatsapp, google form and Instagram. The goal of this research is to produce an application that provides convenience for consumers and producers in meeting the needs of healthy food. The method used to develop this application is the waterfall method. This application was developed using android, flutter framework, JSON (JavaScript Object Notation). The final result of this research is an application that can be accessed through various smartphone devices. With the Pasar Rabu Tani application, it will be a good thing for the community to meet their food needs by staying at home but being able to shop for healthy food needs quickly and accurately.

Pasar Rabu Tani, merupakan sebuah usaha yang diselenggarakan oleh Koperasi Mandiri dan Merdeka(KMDM) yang beranggotakan sejumlah akademisi Universitas Andalas yang bertujuan untuk menyediakan kebutuhan pangan sehat pada konsumen. Selama ini dalam pemasaran produknya, KMDM menggunakan berbagai platform media seperti whatsapp, google form dan instagram. Penelitian ini bertujuan untuk menghasilkan sebuah aplikasi yang memberikan kemudahan bagi konsumen dan produsen dalam memenuhi kebutuhan pangan yang sehat. Metode yang digunakan untuk mengembangkan aplikasi ini adalah metode waterfall. Aplikasi ini dikembangkan dengan meggunakan android, framework flutter, JSON (JavaScript Object Notation). Hasil akhir dari penelitian ini adalah aplikasi yang dapat diakses melalui berbagai perangkat smartphone. Dengan adanya aplikasi Pasar Rabu Tani ini memudahkan masyarakat dalam memenuhi kebutuhan pangan dengan tetap dirumah saja tetapi dapat berbelanja kebutuhan pangan sehat dengan cepat dan tepat.