bluuebunny/crossref_metadata_2025 huggingface dataset:
W świecie poznanych i „niepoznanych” liter, czyli o kontynuacji bezsensów w instytucjonalnych praktykach nauki czytania i pisania dzieci
Authors: Nowicka Marzenna
Published: October 2021

Reading is a key competence in a social functioning. In the Polish educational system both kindergarten and school, are responsible for the effects of learning this skill. The article presents the results of research on the content of textbooks and methodological guides intended for the basic reading course for children aged six and seven. As a result of the comparison, it was found that the literacy process was doubled at the school level according to the scheme in force in the kindergarten. The page layout for entering a new letter and the suggested exercises are repeated in the textbooks. The same process for introducing a new letter is valid at the kindergarten and on the school level. The texts for learning to read are trivial, and the instructions formulated to them block the development of reading skills at the semantic and critical-creative level.
A Size-Biased Poisson-Gamma Lindley Distribution with Application
Authors: Seghier Fatma Zohra , Zeghdoudi Halim , Benchaabane Abbes
Published: October 2021

In this paper, a size-biased Poisson-Gamma Lindley distribution (SBPGLD) has been obtained by size-biasing the Poisson-Gamma Lindley distribution (PGLD) introduced recently by Nedjar and Zeghdoudi (2020). Some of its statistical properties have been discussed. The method of maximum likelihood and the method of moments for the estimation of its parameters have been discussed. Also, an application on the real data of survival times of (56) Indian state of Kerala individus infected with Nipah virus is given.
Investigation on the effect of LiTFSI salt on PVDF-based Solid Polymer Electrolyte Membranes for Lithium-Ion Batteries
Authors: Arro Christian , Ahmad Mohammad Ibrahim , Bensalah Nasr
Published: October 2021

Solid polymer electrolytes provide an alternative approach to providing improved safety whilst concurrently acting as a performance enhanced separator within Lithium-ion batteries (LIBs). This investigation studies the effects of Lithium bis(trifluoromethanesulfonyl)imide (LiTFSI) salts in a polymer blend with Polyvinylidene fluoride (PVDF) and Poly (vinylpyrrolidone) (PvP) or Poly (4-vinylpyridine) (P4VP) on the performance of SPE membranes. Characterization by X-ray diffraction and Fourier-transform infrared spectroscopy highlights the changes due to LiTFSI, specifically amorphization. Performance studies with increasing LiTFSI showed improved thermal stability and the inhibition of PVDF endotherms on differential scanning calorimetry (DSC) profiles. The drawbacks of increased LiTFSI content were evident on the mechanical performance with decreased thresholds on the tensile strength. Inversely, improvements on the dielectric performance and conductivity were observed with excellent workability from a wide electrochemical stability window of 0.5 to 3.64 V vs. Li+/Li. Additionally, the incorporation of metal-fillers; Aluminum Oxide, Zirconia Oxide and Silicon Oxide was similarly studied.
Self-healing behavior of Epoxy-based Double-layer Nanocomposite Coatings modified with Zirconia Nanoparticles
Authors: Habib Sehrish , Hassanein Amani , Shakoor Abdul , Kahraman Ramazan
Published: October 2021

This work reports the self-healing behavior of epoxy reinforced ZrO2 double-layer nanocomposite coatings to alleviate the deleterious effects of corrosion in the oil and gas industry. The corrosion inhibitor (imidazole) and self-healing agent (polyethyleneimine) were separately loaded into zirconia nanocarrier. The epoxy used as the matrix was reinforced with modified Zirconia and applied on pre-treated steel substrate as pre and top layer. The pre-layer was Zirconia modified with imidazole reinforced into epoxy, and the top layer was Zirconia, modified with polyethyleneimine, reinforced into epoxy. Both layers worked independently to provide double protection to the steel substrate. TEM analysis validated that ZrO2 was 15-25 nm in size with spherical morphology. FTIR analysis results confirmed the chemical interactions and bonding among various chemical species. UV-vis analysis proved the pH and time-dependent release of inhibitor and self-healing agent. Self-healing behavior of the double-layer epoxy-based coating was validated through SEM, which revealed the healing of scratched area within 96 h. EIS analysis performed in 0.61 M NaCl solution demonstrated better corrosion protection of double-layer coatings on steel as compared to blank epoxy and single-layer coatings. This improved corrosion inhibition and resistance are attributed to the efficient release of corrosion inhibitors and self-healing agents from ZrO2 nanoparticles in response to the change in the external stimuli. These coatings can be considered a new route for protecting against corrosion in the oil and gas industry and marine applications.
Experimental Investigations of Gas Kick for Single and Two-Phase Gas-liquid Flow in near Horizontal Wells
Authors: Abdelrazeq Motasem Wadi , Sleiti Ahmad Khalaf , Azizur Rahman Mohammad , Barooah Abinash
Published: October 2021

Multiphase flow in pipelines is of great importance and broadly used in several industries for various applications. A multiphase flow is a complex physical phenomenon where more than one phase occurs. In oil and gas exploration process, more attention has been given to the well drilling operation to fulfill the extreme high demand of natural gas. Well drilling operation and technology has transformed to ultra-high pressure and high temperature reservoirs. This transformation has negatively impacted the drilling conditions and the safety of the drilling rig, as a gas kick would become more likely to occur at these extreme conditions. The resulting uncontrolled gas kicks may ignite and explode causing dramatic blowouts associated with very serious consequences, including financial losses, damaging the environment, and loss of personnel’s lives. The early detection of a gas kick is therefore essentially needed for timely response with appropriately well control measures.
Self-Healing Performance of Smart Polymeric Coatings Modified with Tung Oil and Linalyl Acetate
Authors: Ismail Norhan Ashraf , Khan Adnan , Kahraman Ramazan , Abdul Shakoor Rana
Published: October 2021

This work focuses on the synthesis and characterization of polymeric smart self-healing coatings. A comparison of structural, thermal, and self-healing properties of two different polymeric coatings comprising distinct self-healing agents (tung oil and linalyl acetate) is studied to elucidate the role of self-healing agents in corrosion protection. Towards this direction, urea-formaldehyde microcapsules (UFMCs) loaded with tung oil (TMMCs) and linalyl acetate (LMMCs) were synthesized using the in-situ polymerization method. The synthesis of both LMMCs and TMMCs under identical experimental conditions (900 rpm, 55 ◦C) has resulted in a similar average particle size range (63–125 µm). The polymeric smart self-healing coatings were developed by reinforcing a polymeric matrix separately with a fixed amount of LMMCs (3 wt.% and 5 wt.%), and TMMCs (3 wt.% and 5 wt.%) referred to as LMCOATs and TMCOATs, respectively. The development of smart coatings (LMCOATs and TMCOATs) contributes to achieving decent thermal stability up to 450◦C. Electrochemical impedance spectroscopy (EIS) analysis indicates that the corrosion resistance of smart coatings increases with increasing concentration of the microcapsules (TMMCs, LMMCs) in the epoxy matrix reaching ~1 GΩ. As a comparison, LMCOATs containing 5 wt.% LMMCs demonstrate the best stability in the barrier properties than other developed coatings and can be considered for many potential applications.
Optimum Sintering Method and temperature for Cold Compact Bismuth Telluride pellets for Thermoelectric applications
Authors: Jaldurgam Farheen Fathima , Ahmad Zubair , Touati Farid
Published: October 2021

This work intends to investigate the optimum sintering method and temperature that can improve the efficiency of bismuth telluride cold compact pellets for thermoelectric applications. Different p-type and n-type bismuth telluride cold compact pellets were treated using three different sintering techniques and conditions: pressure less (conventional), microwave, and tube (using argon environment) at temperatures 250°C, 300°C, 350°C, and 400°C. The structural, microscopic, electron transport, thermal, and dielectric properties of the pristine and sintered samples were examined. Broadband dielectric spectroscopy was performed to extract a detailed picture of the dielectric properties of the samples. Even though each type of sintering had its own merits and demerits, the optimum conditions for enhanced electric and thermal features were found in microwave furnaces followed by tube and conventional. Low thermal conductivity of 0.4 W/m/K was observed in the samples sintered at 250 °C while the increase in sintering temperature from 250°C to 300°C improved the crystallinity of the material. Moreover, the crystal structure of the bismuth telluride altered with the occurrence of higher oxidation leading to the formation of high bismuth telluride oxide phases at sintering temperatures above 300°C, more dominantly in the n-type samples.
Effect of Plant Growth Regulators on Callus Induction from Leaf and Petiole explants of Hummeid (Rumex Vesicarius)
Authors: Wickramanayake Kokila Kumudu , Ahmed Talaat Abdel-Fattah , Al safran Mohammed Hussain S A
Published: October 2021

Advancement in plant cell culture technology has permitted the increasing interest in harvesting plant metabolites from cell cultures. This technique is based on in vitro propagation of plant callus which contains many beneficial compounds under sterile conditions as the plant source or raw material for natural product extraction. In vitro production of plant sources acknowledges; conservation of plant species in natural habitats which has been a global issue due to over harvesting of medicinal plants for the natural products manufacturing and production of phytochemicals, independent from seasonal and environmental limitations. Establishment of cell cultures is challenging. The main aim is to establish cell cultures as the starting material for the phytochemical analysis in Rumex Vesicarius.
Prevalence of Toxigenic Fungi and Mycotoxins in Arabic Coffee: Protective Effect of Traditional Coffee Roasting, Brewing and Microbial Volatiles
Authors: Al-Attiya Wadha Ahmed Khalifa , Hassan Zahoor UI , Al-Thani Roda , Jaoua Samir
Published: October 2021

Like other agricultural crops, fungal infection and synthesis of mycotoxins in coffee leads to significant economic losses. This study is aimed at investigating the prevalence of toxigenic fungi, their metabolites, and the effect of traditional roasting and brewing on ochratoxin A (OTA) and aflatoxins (AFs) contents of naturally contaminated coffee samples. In addition, in vivo biocontrol assays were performed to explore the antagonistic activities of Bacillus simplex 350-3 (BS350-3) on the growth and mycotoxins synthesis potential of Aspergillus ochraceus and A. flavus. The relative density of A. niger, A. flavus, Penicillium verrucosum and A. carbonarius on green coffee bean was 60.82%, 7.21%, 3.09% and 1.03%, respectively. OTA contents were lowest in green coffee beans (2.15 µg/kg), followed by roasted (2.76 µg/kg) and soluble coffee (8.95 µg/kg). Likewise, AFs levels were highest in soluble coffee (90.58 µg/kg) followed by roasted (33.61 µg/kg) and green coffee (9.07 µg/kg). Roasting naturally contaminated coffee beans by three traditional styles; low, medium and high, followed by brewing resulted in reduction of 58.74%, 60.88% and 64.70% in OTA and 40.18%, 47.86% and 62.38% AFs contents, respectively. BS350-3 volatiles resulted in significant inhibition in AFs and OTA synthesis by A. flavus and A. carbonarius on infected coffee beans, respectively. Gas chromatography mass spectrochemistry (GC-MS/MS) analysis of headspace BS350-3 volatiles showed quinoline, benzenemethanamine and 1-Octadecene as bioactive antifungal molecules. These findings suggest that marketed coffee samples are generally contaminated with OTA and AFs; with a significant number of roasted and soluble coffee contaminated at the levels above EU permissible limits for OTA. Further, along with coffee roasting and brewing; microbial volatiles possess a promising potential, which can be optimized to minimize the dietary exposure to mycotoxins.
Contribution of Glycosaminoglycan binding in CCL21-mediated Migration of Breast Cancer cells
Authors: Malki Mohammed Imad
Published: October 2021

Lymph node metastasis constitutes a key event in Breast Cancer progression and it is a process at least partially mediated by the chemokine CCR7. Chemokine function is dependent upon their binding to both cell-surface glycosaminoglycans (GAGs) molecules and to their specific receptors; thus, the role of GAGs in CCR7-mediated lymph node metastasis was investigated by creating a non-GAG binding chemokine CCL21 (mut-CCL21). Mut-CCL21 (Δ98-134) was synthesized, at 50nM it had similar potential to mobilize intracellular calcium compared to wild-type CCL21 (WT-CCL21). Next, a series of experiments was performed to determine how deletion of the GAG-binding site altered the ability of CCL21 to stimulate chemotaxis within a concentration gradient generated by free solute diffusion. Both WT-CCL21 and mut-CCL21 had a similar potential to stimulate chemotactic migration of PBMC (P>0.05). However, 4T1-Luc cells exhibit reduced migration at 30 & 50nM (p<0.001). Interestingly, this effect was greatly exacerbated in trans-endothelial migration, with the mut-CCL21 failing to increase cell migration above the background level at 30 nM in PBMC and 4T1-Luc cells (p> 0.001 vs WT). This difference could potentially be attributed to reduced GAG binding, as surface plasmon resonance spectroscopy showed that mut-CCL21 did not significantly bind heparan sulphate compared to the WT-CCL21. Finally, a murine model was used to assess the potential of mut-CCL21 to prevent lymph node metastasis in vivo. Mice were injected with 4T1-Luc cells in the mammary fat pad and treated daily for a week with 20µg mut-CCL21 once the tumor was visible. Mice were imaged weekly with IVIS to assess bioluminescence and sacrificed on day 18. Luciferase expression was significantly reduced in lymph nodes from mice that had been treated with mut-CCL21 compared to the control (p=0.0148), suggesting the potential to target chemokine binding to GAGs as a therapeutic option.
Direct Measurement of Vessel Pressure in Chicken Embryo during Development
Authors: Sukumaran Vijayakumar , Abdelraheem Rawia , Yalcin Huseyin
Published: October 2021

Hemodynamic conditions play a critical role in embryonic cardiovascular development, and altered blood flow leads to congenital heart defects (CHD). Chicken embryos are commonly used as models of cardiac development, with abnormal blood flow achieved through left artery ligation (LAL) surgery intervention to restrict the blood flow. The heart is the first functioning organ in the developing embryo and a detailed understanding of the physiological mechanisms involved in its formation provides insights into CHD. Therefore, it is important to measure the pressure during the development of an embryo. This study is aimed to develop measure the pressure during normal and LAL condition in chicken embryo by using an WPI-900A micro pressure system. This approach is based on servo-null method where a microelectrode is introduced into the vitelline artery to directly measure the vessel pressure of the chicken embryo during development (HH18-HH32). We also described the initial calibration of the microelectrode as well as pressure measurement at different time points. In addition, we measure pressure after hemodynamic alteration via LAL surgery. We have successfully measured the vitelline artery pressure after 5 days of post incubated (HH26) chicken embryo. Our study provides a precise measurement of clinical relevant cardiac function. These measurements highlight the importance of hemodynamic alteration during the cardiovascular developments.
Quantitative analysis of lecture-capture archive viewing by pharmacy students during the emergency switch to remote learning
Authors: Hussain Farhat Naz , Al-Mannai Reem , Agouni Abdelali
Published: October 2021

Purpose: The COVID-19 pandemic caused the sudden suspension of face-to-face classes in many higher institutions worldwide. To leverage preparedness of higher education in similar emergencies preventing on-campus classes, we aimed to understand some of the factors that facilitated the rapid switch to remote learning. Methods: We quantitatively analyzed how rapid switch to remote learning following pandemic (Spring 2020) impacted access to lecture-recording archives by undergraduate pharmacy students. The number of views per lecture for each course were mapped to the time of the day, weeks of the term and number of weekly assessments. Data were compared between Spring 2019 and 2020 in addition to analyzing differences before and after remote learning (Spring 2020). Findings: Weekly lecture-recording views after the suspension of in-person classes in Spring 2020 were higher compared to Spring 2019 (452 versus 291 views). Driven by viewing of the previous year’s archives (Spring 2019), the number of weekly views soared in weeks 11-13 (Spring 2020) compared to before coinciding with the sudden switch to online learning although all scheduled assessments in this period were postponed. This was confirmed by comparing views of Spring 2019 archives at two time points – November 2019 and September 2020. All courses studied had higher views per lecture in September 2020 compared to November 2019. Conclusion: Our study underscores the benefits of embedding lecture-capture systems to support student’s learning and leverage preparedness of universities to respond to emergencies preventing face-to-face classes.
Optimization of temperature and extraction time for the nutritional and phytochemical contents of corn bran with ultrasonic-method
Authors: Haslina Haslina , Larasati Dewi , Pratiwi Ery , Nazir Novizar , Fitriana Ika
Published: October 2021

One of the natural antioxidants sources that have the potential to be utilized as raw material for functional food is corn bran. Corn bran is a by-product of the milling process of corn that is gaining attention as a functional food is increasing in recent years. This study aimed to optimize temperature and extraction time for the nutritional and phytochemical contents of corn bran with ultrasonic-method. Optimized Custom Design was applied to investigate the effect of experimental factors on the nutritional and phytochemical contents. This study used Randomized Block Design (RBD) arranged in-factorial with 3 treatments, namely temperature and time of extraction.  Temperature: A1=500C, A2=550C, A3=600C, and A4=650C, and time: B1=10 minutes, B2=15 minutes, B3=20 minutes, and B4=25 minutes. The data obtained were analyzed statistically using ANOVA with a significance level of 95% and then processed with Software DX13.0 ® program. The results of the research show the formula of the experiment which is optimal at a temperature of 500C and 10 minutes. In this condition, the result is the yield at 38.34%, nutritional contents (water at 9.17%; ash at 0.33%; fat at 1.33%, protein at 4.40%, carbohydrates at 85.47%; and crude fiber at 1.88%. produce yield 38.34%, and phytochemical contents (total phenols at 1778.07 µg GAE/g. flavonoids at 92.11 µg GAE/g, vitamin C at 5.84 mg, antioxidant activity at 43.33%, and tannins at 0.11%). This study implies that there is an increase in added value from the conversion of corn bran into nutrient-rich products and has a promising phytochemical content.
Surface Contamination and Dose Rate Verification of Fertilizers common in Iraqi Plantations using RadEye B20 Detector
Authors: A. Baqir Yassir , Farhan Kadhim Nada
Published: October 2021

Twenty three samples of granular chemical fertilizers and organic fertilizers commonly utilized in Iraqi ranches were collected. The samples were prepaid and stored in a Marinelli beaker to measure; dose rate, general count rate and surface contamination of the samples using the RadEye B20 detector, firstly with shield, secondly without the shield to estimate the effect of shielding on the measurements. The results showed that using shield made a significant decrease in the radiation measurements reached about 25%. However the mean value of surface contamination, dose rate and general count rate with shield were 0.54Bq/cm2, 0.65µsv/h, and 0.28Cps respectively, and without shield being 0.34Bq/cm2, 1.33µsv/h, and 1.52Cps respectively.
Corporate Governance and Firms Performance: Evidence from Automobile Assemblers Sector of Pakistan
Authors: KHAN FARHAN , JAN SHARIF ULLAH , AAMIR ALAMZEB
Published: October 2021

The objective of this research is to consider the connections between various corporate governance mechanisms, CEO-Duality, and business performance on Car Assembler Companies listed on Pakistan Stock Exchange (PSX). The data has been analyzed from 2016-2020. T-test and multiple regressions have been applied to verify the effect of corporate governance on business performance. The investigation results indicate that the Size of the Board, Audit Committee, Annual general meeting, and CEO-duality contain a positive relationship to companies’ performance. As a result, the correlation coefficient explains that return on equity and profit margin has a positive relation with independent variables for example Board size, Audit committee, Annual general meeting, and CEO-Duality but, all of them are statistically insignificant. Moreover, ROE Coefficient Results in Fixed Effects and Random Effects Model indicates that only board size has a negative and significant effect on ROE. More specifically, PM Coefficient Results in Fixed Effects Model explain that the Size of the Board shows a negative and insignificant impact on PM. Moreover, the other two independent variables i.e. Audit Committee and Annual General Meeting show a positive and insignificant effect on PM. While in the PM Coefficient Results in Random Effects Model explain that the Size of the Board, Audit Committee, and Annual General Meeting show a positive and insignificant effect on PM. Besides that, Duality shows a negative and insignificant effect on PM. Keywords: Corporate Governance, Board-Size, Audit Committee, Annual, CEO’s Duality.
Intensity Modulated Radiotherapy of Two Simultaneous Neoplasms - Cervical Carcinoma and Breast Carcinoma: A Case Report with a Review of the Literature
Authors: Marinova Lena , Petrov Viktor , Vassileva Vaska
Published: October 2021

Concomitant expression of two neoplasms- cervical carcinoma (CC) and breast carcinoma (BC) is a relatively rare pathology. The manifestation of synchronous primary neoplasms is a challenge for the treating team as it puts a number of questions about the healing strategy.

We present a 57-year-old patient after total laparohisterectomy with lymphatic pelvic dissection on the local advanced CC/IIIB clinical stage. Intensity-modulated radiotherapy (IMRT) in the small pelvis and the upper 2/3 of the vaginal cuff with daily dose (DD) 1.8 Gy up to total dose (TD) 50.4 Gy combined with Cisplatin (50 mg/m2) once a week, was conducted. After 4 months from the diagnosis and complex treatment of CC, PET/CT establishes a second neoplasm-invasive ductal carcinoma in the left mammary gland. After the breast-conserving surgery of BC, we are currently conducting Deep Inspiration Breath-Hold (DIBH) Radiation Technique on the left breast with DD 2 Gy up to TD 50 Gy. After 1 month of pelvic RT completion, RT on the paraaortal lymph nodes with DD 1.8 Gy up to TD 50 Gy should be conducted.

The discussion focuses on the simultaneous expression of two or more neoplasms, their relationship with genetic and other unfavorable predisposing factors, as well as the expected survival after the complex treatment of the two invasive carcinomas, involving IMRT.

For the treatment of multiple malignancies, each case must be considered individually, ideally by a multidisciplinary team. If it is necessary to apply radiotherapy, the use of high-tech radiotherapeutic apparatus with the ability to perform modern radiotherapy techniques such as IMRT is required.
Application of heuristic procedure for multi-criteria optimization to select optimal version of IP network speech codec
Authors: Melnikova Liubov , Linnyk Elena , Kryvoshapka Mykola , Barsuk Valerii
Published: October 2021

A procedure for multi-criteria selection of optimal design solutions is proposed, taking into account the set of contradictory indicators of designed telecommunication system quality. In the procedure, the formal numerical method of weighting factors for solving the MCO problem is supplemented with an informal procedure by the method of narrowing the Pareto set for choosing the only best solution using additional expert information from a decision maker (DM). The inclusion of the decision maker in the interactive mode allows to refine the solution and bring it closer to the goal. In contrast to formal numerical methods, this allows changing the values of some partial criteria in dynamics to achieve the required quality of the optimized system. The problem of choosing a speech codec for IP networks is solved using the proposed procedure. The selection of a set of partial criteria has been substantiated. Solutions are obtained for different values of the weights of partial criteria with the involvement of a decision maker. The results obtained allow to conclude that the proposed procedure can be used by popular IP-PBXs when justifying the choice of an optimal codec version for the user.
VLSI-based synthesis of Moore finite-state-machines targeting telecommunications systems
Authors: Barkalov Alexander , Titarenko Larysa , Chmielewski Slawomir
Published: October 2021

The optimization methods of the logic circuit of Moore finite-state-machine are proposed. These methods are based on the existence of pseudo equivalent states of Moore finite-state-machine, wide fan-in of PAL macrocells, and free resources of embedded memory blocks. The methods are oriented on hypothetical VLSI microcircuits based on CPLD technology and containing PAL macrocells and embedded memory blocks. The conditions of effective application of each proposed method are shown. An algorithm of choice of the best model of finite-state-machine for given conditions is proposed. The examples of proposed methods application are given. The effectiveness of the proposed methods is also investigated. The analysis of the effectiveness of proposed methods showed that optimal in the given conditions method always permits a decrease of the hardware amount in comparison with earlier known methods of the Moore finite-state-machine design. This decrease in hardware does not lead to a decrease in the performance of the control unit. Moreover, there are some special cases, when some other models of Moore finite-state-machine are more effective. The proposed methods can be modified for real CPLDs, where embedded memory blocks are absent. In this case, the system of microoperations is implemented using PAL macrocells too. The same effectiveness of proposed methods should be tested for both cases of FPGA with embedded memory blocks and for CPLD CoolRunner based on PLA technology. The proposed methods should be modified to meet the specific requirements of these chips.
Особенности формирования структуры композита при спекании смеси элементарных порошков Al, Fe и Sn
Authors: Русин Н. М. , Скоренцев А. Л.
Published: October 2021

Проведено спекание брикетов состава Al - 7 % Fe - 38 % Sn, полученных прессованием смеси из элементарных алюминиевого, железного и оловянного порошков. Установлено, что структура спеченного композита состоит из кластеров, образованных частицами алюминия с оловянными прослойками по границам, и кластеров из железосодержащих частиц, также разделенных тонкими оловянными прослойками.
Исследование микроструктуры и твердости медных композитов, армированных Co - Ti
Authors: Сап Эмине , Узун Махыр
Published: October 2021

Исследованы микроструктура и твердость композитов с медной матрицей и армирующими добавками 5, 10 и 15 % (масс.) Co - Ti, полученными смешиванием частиц армирующего порошка и порошка Cu высокой чистоты, прессованием и спеканием при 1000 °C. Определена плотность композиционных материалов. Установлены условия получения наиболее плотного композита с высокой твердостью.
Tracking secondary lahar flow paths and characterizing pulses and surges using infrasound array networks at Volcán de Fuego, Guatemala
Authors: Bosa Ashley , Johnson Jeffrey B. , De Angelis Silvio , Lyons John , Roca Amilcar , Anderson Jacob , Pineda Armando
Published: October 2021

Lahars are one of the greatest hazards at many volcanoes, including Volcán de Fuego (Guatemala). On 1 December 2018 at 8:00pm local Guatemala time (2:00:00 UTC), an hour-long lahar event was detected at Volcán de Fuego by two permanent seismo-acoustic stations along the Las Lajas channel on the southeast side. To establish the timing, duration, and speed of the lahar, infrasound array records were examined to identify both the source direction(s) and the correlated energy fluctuations at the two stations. Co-located seismic and acoustic signals were also examined, which indicated at least 5 distinct energy pulses within the lahar record.  We infer that varying sediment load and/or changes in flow velocity is shown by clear fluctuations in the acoustic and seismic power recorded at one of the stations. This particular event studied with infrasound provides insight into how lahars occur around Volcán de Fuego.
The Theme of Happiness and British Utilitarianism in Russian Thought, from the 1860s to the Early 1880s
Authors: Berest (Юлия Берест) Julia
Published: October 2021

The theme of happiness is a neglected topic in studies of Russian thought, in part because the Russian intelligentsia came to be associated with the ethos of self-abnegation and sacrifice in the name of the common good. It is little known that the spread of utilitarian philosophy in Russia in the early 1860s sparked a debate on the notion of happiness (individual and collective) between the left intelligentsia and their opponents on the conservative spectrum. The publication of the Russian translations of Jeremy Bentham and John Stuart Mill in the late 1860s provided a new spur to the controversy and gave it a more philosophical flavor. While the intelligentsia thinkers asserted the right to happiness as one of the fundamental human needs, rooted in the very essence of human nature, the conservative writers contested both the idea of happiness as a right and the notion that happiness is the purpose of life. This article examines the intellectual and contextual development of the theme of happiness in Russian thought throughout the 1860s–1880s.
Bryan.19421038.Tugas2
Authors: Bryan
Published: October 2021

Bryan.19421038.Tugas2
Differential expression of FBLN1 in cancer of the vulva.
Authors: Mamoor Shahan
Published: October 2021

In these brief notes we document work using published microarray data (1, 2) to pioneer integrative transcriptome analysis comparing vulvar carcinoma to its tissue of origin, the vulva. We report the differential expression of fibulin 1, encoded by FBLN1, in cancer of the vulva. FBLN1 may be of pertinence to understanding transformation and disease progression in vulvar cancer (3).
Bryan.19421038.Tugas3
Authors: Bryan
Published: October 2021

Bryan.19421038.Tugas3
Pengaruh Persepsi Kualitas Pelayanan E-Commerce Terhadap Kepuasan Pelanggan, Kepercayaan, dan Loyalitas Pada Produk Fashion
Authors: mauala ahmad
Published: October 2021

Secara spesifik, terdapat tujuan yang diharapkan, yaitu menjelaskan pengaruh (1) Service Quality terhadap Satisfaction, (2) Service Quality terhadap Trust, (3) Service Quality terhadap Loyalty. Jadi di sini metode yang digunakan yaitu mengumpulkan data serta mempelajari literatur yang bersumber pada jurnal. Dan dari jurnal tersebut dapat disimpulkan bahwa ada nya hubungan positif antara kualitas e- service dengan kualitas pelayanan terhadap pelanggan.
The Influence Of Digital Employee Experience And Employee Agility: Do They Boost Firm’s Effectiveness?
Authors: Kabir Muhammad Fadhlan
Published: October 2021

Pandemi telah mempengaruhi semua industri di Indonesia, termasuk logistik industri, khususnya organisasi pelabuhan. Operator pelabuhan kering harus meningkatkan organisasi mereka kelincahan untuk beradaptasi dan bertahan hidup selama pandemi. Beberapa faktor mempengaruhi organisasi untuk meningkatkan kelincahan organisasi, seperti persaingan produk, kemajuan teknologi, dan keunggulan kompetitif. Kekuatan kemajuan teknologi organisasi untuk mengadopsi praktik kelincahan perusahaan untuk meningkatkan efektivitas perusahaan . Kelincahan ada dalam organisasi melalui manusia, inovasi, dan teknologi .
Pemimpin yang berintegritas
Authors: Ma'tang Wita
Published: October 2021

Menjadi pemimpin yang patut di teladani
Hospitalitas gaya kepemimpinan dalam gereja sebagai pelayan
Authors: Elsya Imel Dan
Published: October 2021

Kepemimpinan adalah gaya Yang menjadi salah satu kesuksesan kerja. Pemimpin sangat diperlukan dalam gereja yang akan menjadi pelayan Tuhan. Setiap pemimpin memiliki gaya masing-masing dalam memimpin jemaatnya. Karya ini mengalih sebuah gaya kepemimpinan dalam gereja sebagai pelayanan. Kepemimpinan dalam gereja sebagai pelayanan tersebut siap menjadi pemimpin-pemimpin pada bidangnya masing-masing. Pelayanan tersebut merupakan suatu wadah atau perkumpulan orang yang percaya dan siap menjadi kader siap utus atau pelayan Tuhan sehingga menjadi pemimpin yang krisis keteladanan kepemimpinan yang akan menjadi proses kaderisasi pemimpin. Tulisan ini bertujuan untuk mengungkapkan bahwa pentingnya gaya kepemimpinan dalam menjadi pelayan Tuhan dan menjadi teladan yang baik untuk semua orang. Pendekatan yang digunakan yaitu pendekatan kualitatif dengan menggunakan pedoman pengumpulan data melalui jurnal-jurnal yang ada dan buku-buku yang berhubungan dengan pembahasan. Penelitian ini mengungkapkan pentingnya mengambil bagian dalam pelayanan gereja untuk menjadi sebuah tugas dan tanggungjawab sebagai panggilan untuk kita orang-orang yang diberikan kepercayaan.
SOME WORDS ABOUT ONLINE PROGRAMS IN GERMANY . ACTUAL PROBLEMS OF APPLIED SCIENCES JOURNAL WORLD ISSN 2733-3817, (1(17), 73–75.
Authors: Muratbekova Sarakul Abishovna
Published: October 2021

Considering the recent COVID-19 pandemic, online education has had a significant surge in popularity. And it’s not just online English schools or fitness courses, but also full-fledged higher education programs. Some experts predict that soon all universities will move to our tablets and laptops. Of course, if surgeons and nuclear physicists get their qualifications while sitting at home, a disaster will surely happen. However, there are several professions that can now be mastered remotely without any quality loss. The article also deals with the problems of studying in Europe. Here we try to introduce all the advantages of German universities and students’ life if they leave their home and come to study in Germany.
employee agility
Authors: lam christopher
Published: October 2021

Pada zaman sekarang ini sudah bisa dibilang sebagai zaman digital dimana semua orang sekarang ini sudah menggunakan teknologi di kehidupan sehari harinya. Dengan adanya banyak teknologi seperti ini maka juga perusahaan juga menggunakan teknologi untuk pekerjaannya agar lebih efisien. Tetapi dengan teknologi juga ada perlu dibutuhkan ahli untuk mengoperasikan dan juga membuat suatu karya dengan teknologi tersebut maka itu dibutuh kan karyawan yang agile yang berarti karyawan yang kerjanya sangat efisien. Jika karyawan tidak agile dalam menggunakan teknologi tersebut maka bisa terjadi hambatan produksi yang bisa merugikan perusahaan, maka itu dibutuhkan karyawan yang agile. Semakin agile karyawan tersebut maka semakin tinggi kualitas produksi karyawan tersebut. zaman sekarang ini sudah dibutuhkan banyak karyawan yang agile dan juga yang kerjanya konsisten dan stabil dalam masa kerjanya maka itu saya akan membahas employee agility.
Danger or Dislike: Distinguishing Threat from Negative Valence as Sources of Automatic Anti-Black Bias
Authors: March David Scott , Gaertner Lowell , Olson Michael
Published: October 2021

The Dual Implicit Process Model (March et al., 2018a) distinguishes the implicit processing of physical threat (i.e., “can it hurt or kill me?”) from valence (i.e., “do I dislike/like it?”). Five studies tested whether automatic anti-Black bias is due to White Americans associating Black men with threat, negative valence, or both. Studies 1 and 2 assessed how quickly White participants decided whether positive, negative, and threatening images were good versus bad when primed by Black versus White male-faces. Studies 3 and 4 assessed how early in the decision process White participants began deciding whether Black and White (and, in Study 3, Asian) male-faces displaying anger, sadness, happiness, or no emotion were, in Study 3, dangerous, depressed, cheerful, or calm or, in Study 4, dangerous, negative, or positive. Study 5 assessed how quickly White participants decided whether negative and threatening words were negative versus dangerous when primed by Black versus White male-names. All studies indicated that White Americans automatically associate Black men with physical threat. Study 3 indicated the association is unique to Black men and did not extend to Asian men as a general intergroup effect. Studies 3, 4, and 5, which simultaneously paired threat against negativity, indicated that the Black-threat association is stronger than a Black-negative association.
Does it pay to imitate? No evidence for social gains from lexical imitation
Authors: Lelonkiewicz Jaroslaw Roman , Pickering Martin John , Branigan Holly P.
Published: October 2021

According to an influential hypothesis, people imitate motor movements to foster social interactions. Could imitation of language serve a similar function? We investigated this question in two pre-registered experiments. In Experiment 1, participants were asked to alternate naming pictures and matching pictures to a name provided by a partner. Crucially, and unknown to participants, the partner was in fact a computer program which in one group produced the same names as previously used by the participant, and in the other group consistently produced different names. We found no difference in how the two groups evaluated the partner or the interaction, and no difference in their willingness to cooperate with the partner. In Experiment 2, we made the task more similar to natural interactions by adding a stage in which a participant and the partner introduced themselves to each other, and included a measure of the participant’s autistic traits. Once again, we found no effects of being imitated. We discuss how these null results may inform imitation research. [NOTE: In citations, please refer to: Lelonkiewicz, J.R., Pickering, M.J., & Branigan, H.P. (2021). Does it pay to imitate? No evidence for social gains from lexical imitation. Royal Society Open Science, 8(11), 211107. https://doi.org/10.1098/rsos.211107]
Illusion managers. The role of historical narratives in populist leadership
Authors: Gkinopoulos Theofilos , Bilewicz Michał
Published: October 2021

In this paper, we delineate the connection between history, social identity and populism, applying to populist leadership. We develop an argument of the use of history by populist leaders to politically mobilize and manage of social identities. We draw on social identity approach and its connection with populism. We introduce history as a political tool for populist leaders. We bring specific historical examples from Greece and Poland to make a case for a particular narrative that populist leaders communicate.. We present explanations offered in populist history such as belief in ‘good and evil’ and historical analogies. Finally, we present methods of spreading historical narratives by populist leaders, emphasizing on censorship, denial, museums and commemorations. We conclude by arguing for populist leadership as a reflection of contemporary history with leaders as history makers and consumers. We identify some key questions to enhance our understanding of the historical component of populist identities.
تقييم المرونة السعرية والدخلية للمصارف الحكومية في العراق للمدة 2010-2018
Authors:   الجامعة المستنصرية/ كلية الادارة والاقتصاد, جليل عبد النبي عبير , عبد الزهرة حمدان أ. م . د أحمد
Published: October 2021

Flexibility is one of the most important tools of economic analysis that helped prove the nature of economic relations. In many cases, it was used to infer the principle of conformity between reality and theory. Dropping the scale of flexibility is a criterion for judging the credit activity of commercial banks. It is very important because these banking financial institutions are Economical institutions, it is important to diagnose those aspects related to profits, profitability, liquidity, safety, and everything related to financial analysis and the division of banking performance, but the most important is to know the economic feasibility and the nature of credit responses granted by commercial banks to economic variables, and any of these variables has the power to influence and stimulate credit activity. Therefore, this policy is a continuation of all studies that focused on the aspects of profitability and liquidity to focus an attempt to reach important results regarding the factors that contributed to the reduction or expansion of credit activity and the relationship between government commercial banks on the one hand and private commercial banks on the other. Therefore, the study started from the problem of not playing a leading role in the Iraqi economy by commercial banks to achieve economic development so far. The study aims to try to reveal the nature of economic relations and judge the extent of their strength or weakness to determine the most important of the variables to recommend targeting by the monetary authority. The most important conclusions are that the price flexibility of credit showed the importance in analyzing private banks compared to their results in government banks, and this means that the public deals with government banks regardless of interest rates because they are a source of confidence stemming from government ownership of them. And that the internal flexibility of credit showed the importance of the income component in each of the government commercial banks as a catalyst for credit activity, demand, and supply.
Report: Controlling Clostridium Botulinum In Heat-Preserved Food
Authors: J. Pflug Irving
Published: October 2021

The purpose of this report is to explain, in easy to understand outline form, the basic principles of controlling Clostridium botulinum in heat-preserved food. There are three major parts to the story: (1) Truths regarding the Clostridium botulinum problem, (2) Controlling the Clostridium botulinum hazard; and (3) Estimating the probability of process failure. The later includes errors that may occur in the process design area and errors that may occur in the process delivery area. In the report, "Science, Practice and Human Errors in Controlling Clostridium botulinum in Heat-Preserved Food in Hermetic Containers," by Pflug, Irving J., Journal of Food Protection, 73(5):993-1002 (2010), the important story of Clostridium botulinum has been told in detail, but the important results have been hidden by the author's syntax. In this manuscript, "Controlling Clostridium botulinum in Heat-Preserved Food," we hope to make available the details of Clostridium botulinum control. The purpose of this report is to explain, in easy to understand, outline form, the basic principles of controlling Clostridium botulinum in heat-preserved food. Quite simply, there are three major aspects to Clostridium botulinum control: (1) Facts regarding the Clostridium botulinum organism and its spores; (2) How to control the Clostridium botulinum hazard; and (3) Estimating the probability of process failure.
Estimation of the dental movements caused by Narval® Oral Appliance in the treatment of adult obstructive sleep apnea hypopnea syndrome
Authors: Buiret G
Published: October 2021

Objective: oral appliances are one of the treatments of obstructive sleep apnea hypopnea syndrome. They all have dental anchoring points, causing potential changing in the dental occlusion with time. The aim of the study was to evaluate dental displacement induced by Narval® oral appliance in the treatment of the adult mild to severe obstructive sleep apnea hyponea syndrome. Material and methods: The study was based on 15 adults with mild to severe obstructive sleep apnea hypopnea syndrome treated with a Narval® oral appliance for more than one year. Before oral appliance delivery and more than one year after oral appliance delivery, dental impressions were performed and digitized by a 3D scanner. The dental positions were calculated by the software 3D Reshaper® and compared. Results: The mean wearing time of the Narval® oral appliance was 13.5 months (±2.1). The mean mandibular advancement was 6mm (±2). For the maxillary arch, there was a significant distalization of molar and premolar-canine blocks from 0.12 to 0.20mm (all p<0.05) and a significant proclination of incisal blocks of 0.18mm (p<0.05). For the mandibular arch, there was a significant mesialization of the molar and premolar-canine blocks of 0.14 to 0.25 mm (p<0.05) and a non-significant retoclination of the incisors of 0.09 mm. Conclusions: The Narval® oral appliance produced minimal but significant teeth movements on the maxillary and mandibular at the short and medium term.
Sino-Maxillary Mucormycosis of Iatrogenic etiology in an immunocompetent patient - Importance of early diagnosis and prompt management
Authors: Jeyaraj Priya
Published: October 2021

Sino-maxillary mucormycosis is an opportunistic, aggressive, invasive and fulminant fungal infection, which has the ability to rapidly cross anatomical barriers, causing extensive hard and soft tissue destruction, leading to significant cosmetic deformity, functional debility and morbidity. It usually affects susceptible, debilitated or immunocompromised individuals. A comprehensive Review Paper is presented, with a descriptive report on an unusual Case presentation, involving the dentoalveolar complex which thereafter invaded the maxillary antrum, in an otherwise healthy, adult patient with nil comorbidities. A probable intraoral portal of entry, and a likely iatrogenic etiopathogenesis resulting from inoculation of the fungus or its spores during dental extractions carried out in an unsterile setting, has been considered and elucidated. An emphasis has been placed on according a high index of suspicion in diagnosis of this fungal infection even in immunocompetent and healthy adults, presenting with a seemingly simple, deceptively indolent odontogenic infection. The importance of careful, albeit rapid differential diagnosis, and a prompt and aggressive medical-surgical treatment protocol instituted immediately following a confirmatory diagnosis, helps in limiting the spread and degree of destruction which can be caused by this potentially lethal fungal infection.