bluuebunny/crossref_metadata_2025 huggingface dataset:
Manganese dioxide coated cotton fabric decorated with palladium nanoparticles for oxidation of alcohols, oxidative deprotection of oximes and degradation of methyl orange
Authors: Sharma Surbhi , Sharma Vrinda , Choudhary Anu , Sharma Sukanya , Paul Satya
Published: December 2022

The development of novel bio-based heterogeneous catalytic systems with easy separation and recyclability is significant in chemical synthesis. In this work, palladium nanoparticles have been successfully anchored on to the surface of MnO2 modified cotton fabric via a facile method for the synthesis of Pd(0)@MnO2-CF catalyst. Several characterization methods including FEG-SEM, EDX, XRD, FTIR, TGA, ICP-AES and XPS were used to confirm the immobilization of Pd NPs onto the cotton fabric. The catalytic activity of synthesized catalyst, Pd(0)@MnO2-CF, was evaluated for oxidation of alcohols, oxidative deprotection of oximes and degradation of methyl orange for which it demonstrated good activity. Besides, easy separation of the catalyst from the reaction mixture is one of its major advantages as it eliminates the need to employ other tedious work-up procedures. Further, the reusability of Pd(0)@MnO2-CF was studied by performing oxidation of 4-bromobenzyl alcohol and oxidative deprotection of 4-bromobenzaldehyde oxime consecutively for five times and a minor loss in catalytic activity was observed.
Performance of creatinine and cystatin C-based equations for GFR estimation in children with pre-dialysis chronic kidney disease.
Authors: Dawman Lesa , Rawat Amit , Tiewsoh Karalanglin , Meena Jitendra
Published: December 2022

Background: Numerous equations have been reported for the estimation of glomerular filtration rate (eGFR) based on serum creatinine. Serum cystatin C-based equation has been recently demonstrated to be better in estimating GFR. This study was conducted to examine the agreement between eGFR measured by equations based on serum creatinine (eGFRCr) and cystatin C (eGFRCys) or both (eGFRCrCys) in children with chronic kidney disease (CKD).
Methods: This prospective observational study was conducted in children less than 14-years with CKD stage 2-4. CKiD equation was used for calculation of eGFRCr and eGFRCys. Considering the eGFRCr as reference standard, we assessed the agreement of eGFRCr with eGFRCys and eGFRCrCys estimated by constructing a Bland-Altman plot and visually estimating the distribution of points representing the difference between eGFRCr and eGFRCys or eGFRCrCys against the line of zero difference.
Results: A total of 60 patients (54 boys) with mean age of 88±47 months were enrolled. Overall, 57%, 35% & 8% children had CKD stage 2, 3, and 4 respectively. The mean eGFRCr, eGFRCys and eGFRCrCys was 58 (19), 55 (21) and 62 (12) ml/min/1.73 m2, respectively. Bias between eGFRCr and eGFRCys was 2.8 (95% CI: -1.03 to 6.6) ml/min/1.73 m2. Bias between eGFRCr and eGFRCrCys was -4.5(95% CI: -6.5 to -2.5) ml/min/1.73 m2.
Conclusion: Serum creatinine-based equation slightly overestimates the GFR when compared with eGFRCrCys with overall average agreement between equations in children with pre-dialysis CKD. For GFR estimation, the combination of serum creatinine and serum cystatin C is more precise than either marker alone.
The June 2022 Afghanistan earthquake M W 6.2: Tectonic implications and Coulomb stress change
Authors: Baruah Santanu , Dey Chandan , Chetia Timangshu , Saikia Sowrav , Molia Nabajyoti , Borthakur Prachurjya , Hazarika Devajit , Kayal J R
Published: December 2022

The June 21, 2022 strong earthquake Mw 6.2 occurred nearly 165 km southeast of Kabul city, Afghanistan, and caused more than 1000 casualties and huge property losses. An untimely occurrence of the shallow focus event (~ 10 km, USGS report) at mid-night when people were asleep and the poor constructed houses caused so many casualties. It is one of the most devastating earthquake in Afghanistan in the recent years. The GCMT solution shows a strike-slip faulting at a centroid depth ~ 15 km; the NNE-SSW nodal plane is comparable with the trend of Chaman-Gardez fault system, though the eipcenter is ~ 50 km away from the surface fault traces. Afghanistan is under tectonic stresses from the Hindu-Kush collision zone to the north, Makran subduction zone to the south and from the transpressional zones to the east and west. Stress inversion study shows a NNW-SSE compressional stress and NNE-SSW extensional stress in the study area, the central intra-plate zone of Afghanistan. A seismic cross section of the main shock, aftershocks and the past events shows shallow near vertical source zones. The aftershock trend and the maximum PGA trend are parallel to the Chaman-Gardez fault system. Coulomb stress-change images after the main shock show that the aftershocks occurred in the increased stress zone of the rupture area.
Alternative samples for Porcine Reproductive and Respiratory Syndrome surveillance in an endemic PRRSV-1 infected breeding herd: a descriptive study
Authors: LEBRET Arnaud , NORMAND Valérie , BERTON Pauline , NICOLAZO Théo , TEIXEIRA-COSTA Charlotte , CHEVANCE Céline , BRISSONNIER Mathieu , BOULBRIA Gwenaël
Published: December 2022

Knowing PRRSV status is essential to design herd management protocols. For this, weaning-age pigs are a key subpopulation. In the last years, several alternatives to blood sampling have been tested because of easier, welfare friendly and cost saving tools. Moreover, most of them allow to test more animals and then, seem to be more sensitive in case of low prevalence scenario. However, these studies have been implemented mainly in PRRSV-2 infected herds. The first objective of our study was to compare the rate of detection of PRRSV-1 by RT-qPCR in individual serum samples, family oral fluid samples (FOF) and udder wipes (UW) collected the day before weaning. The second objective was to evaluate the interest of pooling. The study was performed on a 200-sows farrow-to-finish farm, PRRSV-1 infected and unstable. 119 litters were sampled (one sample type per litter). The rate of detection of PRRSV-1 in blood samples, FOF and UW was 10.9%, 7.6% and 0.8%, respectively. The agreement between sera and FOF was almost perfect even if detection capacity of sera was numerically superior to FOF. The Ct values on sera were statistically lower than FOF ones. Two modalities of pooling (1/3 and 1/5) were tested for sera and FOF. They showed that both modalities did not impact the qualification neither of the litter not of the batch PRRSV classification. On the other hand, even pooled by 3, most of the FOF pools gave negative results misclassifying many litters and batches. In the conditions of our study, in a PRRSV-1 infected scenario, FOF seemed to be a good alternative to blood sampling only when analysed individually and so a more costly alternative.
Hand Gesture Recognition System for Controlling VLC Media Player Based on Two Stream Transfer Learning
Authors: Patil Anjali , Patil Shilendra
Published: December 2022

The hand gesture recognition (HGR) is one of the most prominent cogent in machine learning and computer vision applications. This paper implements an application of HGR which is designed for human computer interaction using deep learning based two stream transfer learning for controlling the VLC media player. The aim and objectives of this application are to use a natural device free interface, which recognizes hand gestures as commands. The application uses a webcam which is used for image acquisition. To control the VLC media player using defined gesture, the application focuses on some function of VLC which are used more frequently such as play, pause, and stop. In order to incorporate this, a decision fusion based system using the transfer learning architectures is proposed to achieve the said task. Two pretrained models namely ‘MobileNet’ and ‘Inception V3’ are used in the research work. To find the region of interest (ROI) in the image, YOLO (You Only Look Once) architecture is used which also decides the type of model. Edge map images and the spatial images are trained using two separate versions of the MobileNet based transfer learning architecture and then the final joint probabilities are combined to decide upon the hand sign of the image. The experimentation carried out demonstrates that the system provides high accuracy in real time with 100% accuracy.
Examining the Impact of the COVID-19 Pandemic on Ridesourcing Usage: A Case Study of Chicago
Authors: Debnath Anindya , Ogungbire Adedolapo , Mitra Suman
Published: December 2022

The COVID-19 pandemic has led to an unprecedented change in transportation, including shared mobility services. This study examined the effects of the COVID-19 pandemic on ridesourcing usage by leveraging two years (2019 and 2020) of daily ridesourcing trip data in Chicago, Illinois. The study employed a set of Random Effects Panel models to examine the factors contributing to changes in ridesourcing usage before and during the pandemic and how the COVID-19 related policies issued by the state and local agencies affected ridesourcing trips. Results show: i) a considerable drop in total daily trips, total daily trip distances, and total daily trip durations was observed once the stay-at-home order was issued, while an increase in average daily trip distances was evident during the stay-at-home period; ii) the south and west parts of Chicago experienced a relatively larger increase in ridesourcing services during the reopen-I period than the stay-at-home and reopen-II periods; iii) areas with higher employment density produced fewer ridesourcing trips during the pandemic while it was the opposite during the pre-pandemic period; iv) areas with higher median income households, higher employment density, and more rail stations experienced a greater decrease in the change of daily total ridesourcing trips, total trip distances, and total trip durations during the periods of state of emergency and stay-at-home orders. Results of this study provide insights for the policymakers and ridesourcing operators to better respond to an unprecedented crisis like the COVID-19 pandemic and help them to rebuild the ridesourcing ridership in the post-pandemic era.
Outcome of Modified Lateral Intercostal Artery Perforator Flap as a Unique Oncoplastic Technique for Laterally Located Breast Cancer Running title: Modified LICAP as unique oncoplastic procedure for breast cancer
Authors: Hagag Alaa Ahmed Abdelaziz , Hussein Nawel Elsayed , Abdelhamid Mohamed I. , Mahmoud Ramadan , Ashour Hassan R. , Alkilany Mohamed M.
Published: December 2022

Background
Breast cancer is the most common feminine malignant disease. Surgical treatment is the standard care for early stages, and breast conservation therapy became standard management for patients with small-sized tumors. Oncoplastic techniques aim to preserve this precious organ without distortion and with less morbidity. Applying the modified lateral intercostal artery perforator flap offers a one-stage, single position surgery with invisible scar, good access to the axilla and satisfying cosmetics.
Methods
This study was applied to 55 histo-pathologically-confirmed breast cancer patients. All patients were candidates for breast conserving surgery. Observations were recorded and data were collected.
Results
The procedure was overall very good, with smooth recovery after surgery and achieving both oncological safety and pleasant cosmetic results. The early post-operative complication were expected and easily dealt-with. No mortality was recorded. Modified lateral intercostal artery perforator flap offers a chance for patients with laterally located breast cancer and candidates for breast conservation.
Conclusion
In conclusion, our trial with modified LICAP was quiet satisfying. We recommend larger studies and longer periods of follow up.
Influence of foaming-induced crystallization behavior on the structure of PBAT supercritical foamed beads
Authors: Ou Xuanle , Chen Zhuangxin , Dong Zhixian , Wang Aofeng , Xu Ruijie , Lei Caihong , Chen Dahua
Published: December 2022

The crystallization behavior during foaming directly affects the foaming properties. Double melting peaks were observed in the DSC curve of supercritical CO2 foamed PBAT beads. For crystalline polymers, there is no consensus on the influence of the crystallization behavior during foaming process on the stabilization of the cell structure. In this work, PBAT foamed bead and unfoamed pellets were prepared by controlling the soaking temperatures in supercritical CO2, soaking step (one or two) and the outgassing rate, respectively. By comparing the relief rates we find that the stretching-induced crystallisation caused by the rapid expansion of the gas during foaming plays an important role in the stabilization of the cells. Although the crystalline perfection or crystal size at this point is much smaller than that of the crystalline grains formed during static cooling, the rapid crystallization is effective in stabilizing the cell structure of the foamed pores. Compared to normal supercritical foaming processes, the two-step foaming process of soaking CO2 at high temperatures followed by foaming at low temperatures results in a constant foaming multiplier and an increase in cell size. At high temperatures, more CO2 diffuses into the PBAT pellets, increasing the instantaneous gas concentration in the pellets for foaming, and the rapid stretching produces stretching-induced crystallization that raises the average size of the cells, further increasing the expansion multiplicity of individual cells. The two-step soaking foaming method is a more efficient way of manufacturing industrial foamed beads.
How to be a ham sandwich or an eel: The English deferred equative and the Japanese eel sentence
Authors: Oshima David Y.
Published: December 2022

In some languages including English and Japanese, a nominal predicate construction (NPC; "NP1 is NP2") has a marked variety—"open-ended-relation NPCs" (ONPCs), to label it—where the referents of the subject NP and the predicate NP are understood to be in some pragmatically prominent relation other than identity or inclusion (e.g. I'm the ham sandwich 'I'm the customer who ordered the ham sandwich'). The Japanese ONPC has been called the "eel sentence (eel construction)", after an oft-cited example involving unagi 'eel' as its predicate NP. The English ONPC is discussed in good detail by Ward (2004; "Equatives and deferred reference", Language 80) under the rubric of the "deferred equative". The ONPCs in the two languages can be naturally used only under limited discourse configurations, with the English one being more severely constrained than the Japanese one. This work develops semantic analyses of the two ONPCs that improve on previous accounts.
INFORMATION SECURITY FUNDAMENTALS APPLIED TO THE DEVELOPMENT OF SYSTEMS
Authors: Da Silva Aparicio Maida , Dos Anjos Caldas Marcelo , Silva De Souza Pinheiro Jaqueline
Published: December 2022

This article aims to analyze the commitment of developers to the use of information security fundamentals for the development of systems and understand whetherthese professionals understand the importance that and ste theme has today for data protection. Seeking to achieve this purpose, a bibliographic review on the subject was first carried out in several sources to have a good data collection to base this article, and later a searchwas conducted through a questionnaire in Google Forms. The research came to help in understanding the use and implementation of security tools in development. One relevant fact that was acquired by the research is that many programmers understand about the importance of security in system development, however, some do not know how to use them or use them, but do not know how it actually works.
STUDY OF THE PROPORTION AND VARIOUS INDICATIONS ASSOCIATED WITH PRIMARY CESAREAN SECTION IN MULTIPAROUS WOMEN IN TERITARY CARE HOSPITAL IN WESTERN MAHARASTRA
Authors: Vamsi Sirija Papa , Kharde Prashant
Published: December 2022

Background : World wide raise in cesarean section rate in the last three decades has been the cause of alarm and need for study in depth .cesarean section has been one of the most commonly performed surgical procedures . Primary caesarean section in the multipara means first caesarean section done in the patients who had previously delivered vaginally once or more(1). Aims and objectives of this study were to know the proportion and various indications of primary caesarean section in multipara. Methods : This was a prospective observational study of primary caesarean section in multipara women admitted at tertiary care hospital in western rural Maharashtra during the period of 1year from june2021 to june2022. Multipara with pregnancy of >28 weeks gestation (gravida 2 and above), each of whom has had a previous vaginal delivery of >20 weeks gestation were included(2). Women with previous abortions and previous section were excluded. Results:During the study period of one year, total 8124 deliveries occurred, out of which 3000 (37.39%) underwent caesarean section and 386 (12.61%) were primary caesarean section in multigravida. Out of these multigravida patients who underwent primary caesarean section- most of the patients were unbooked (77.72%). Majority of the cases were direct admission in the hospital (61.13%). Maximum number of the patients were in the age group of 22- 30 years (55.95%). Two third of the patients were literate (69.44%) Maximum number of patients were Gravida 2 (48.72%). Almost all of them (94.85%) underwent emergency caesarean section. The most common indication for primary LSCS in multigravida patients was fetal distress 120 (30.79%) followed by malpresentation in 76 (19.39%) patients, severe pre ecclamsia and ecclamsia in 82 (19.39%), Obstructed labour in 36 (9.55%), and antepartum hemorrage in 43 (12.1%), Twin pregnancy in 29 (6.44%). Most common maternal complication was pyrexia 40 (10.36%) Most common indication for caesarean section in multipara was fetal distress followed by mal-presentation and severe pre-ecclampsia Conclusion and interpretation:From the above study it is very clear that, many unforeseen complications occur in woman who previously had a normal vaginal delivery, Present studyalso concludes that Fetal distress is a major contributor to primary CS in multigravida. Proper antenatal evaluation with early detection and management of high risk cases can reduce the likelyhood of intrapartum fetal distress.
STUDY OF THE TEMPERATURE DISTRIBUTION IN A PARABOLIC CYLINDRICAL CONCENTRATORUSING A NANOFLUID AS HEAT TRANSFER FLUID
Authors:   Fluid Mechanics and Transfer Laboratory, Physics Department, Sciences and Technologies Faculty, Cheikh Anta DIOP University, Dakar-Fann, Senegal., Ngor Thiam Omar ,   Research Group on Solar Energy and Transfers (GREST), Sciences and Technologies Faculty, Cheikh Anta DIOP University, Dakar-Fann, Senegal., Dia Samba ,   Fluid Mechanics and Transfer Laboratory, Physics Department, Sciences and Technologies Faculty, Cheikh Anta DIOP University, Dakar-Fann, Senegal.,   Research Group on Solar Energy and Transfers (GREST), Sciences and Technologies Faculty, Cheikh Anta DIOP University, Dakar-Fann, Senegal., Mbow Cheikh ,   Fluid Mechanics and Transfer Laboratory, Physics Department, Sciences and Technologies Faculty, Cheikh Anta DIOP University, Dakar-Fann, Senegal.,   Research Group on Solar Energy and Transfers (GREST), Sciences and Technologies Faculty, Cheikh Anta DIOP University, Dakar-Fann, Senegal.
Published: December 2022

We have numerically studied the heat transfers in a Cylindrical-parabolic concentrator using a nanofluid as heat transfer fluid for its use in Solar Thermodynamics. After an analysis of the work relating to solar concentrators and nanofluids, we have, after having described our physical system and posed working hypotheses, written the equations which govern the transfers in our collector. The latter as well as the associated boundary conditions were then dimensionless in order to generalize the problem and reveal the parameters that control the operation of the absorber. To solve our equations, we used the method of finite differences and the algebraic system obtained is solved thanks to the Thomas method combined with an iterative process of line-by-line relaxation type. The computer code that we developed made it possible to find the temperature distributions according to the spatial coordinates and at different times. The effects and influences of wind effect, axial and transverse thermal dispersion, absorber length, geometric shape factor on the average temperature distributions of the coolant is analyzed. At the end of the study, we were able to identify the most important physical and geometric parameters which give our system optimum operation for its use in Solar Thermodynamics.
A STUDY TO EVALUATE EFFICACY AND SAFETY OF Q SWITCHED ND:YAG LASER IN AMATEUR AND PROFESSIONAL TATTOO REMOVAL
Authors:   Assistant Professor. Dept. of Dermatology, Dr. M.K.Shah Medical College., J. Patel Dharaben , R. Makwana Dhwaniben ,   Senior Resident. Dept. of Dermatology, Dr. M.K.Shah Medical College., T Solanki Nehabahen ,   Senior Resident. Dept. of Dermatology, Dr. M.K.Shah Medical College., S. Parmar Kirti ,   Professor. Dept. of Dermatology, Dr. M.K.Shah Medical College.
Published: December 2022

Introduction: Tattooing has gain popularity since ancient time and has become increasingly popular, particularly among young people. Advances in Laser and Light based technology have revolutionized tattoo removal, using various wavelength to target various tattoo color pigments and lesser complications. The Q-switched Nd:YAG laser is considered the standard device of choice for laser tattoo removal. Aims: To evaluate the efficacy and safety of Q switched ND YAG laser in amateur and professional tattoo removal. Materials and Methods: This was a prospective, interventional single centre study carried out in dermatology outpatient department of a tertiary care teaching hospital in western India. Total 44 patients over the period of 18 months with red, green, blue or black colour tattoo according to inclusion and exclusion criteria were enrolled. Results: Most common age group in our study was 21-30 years (61.4%). Amateur tattoo 34 (77.3%) were much more than professional tattoo 10 (22.7%). Blue-black tattoo (93.2%) was more common than red-green (6.8%) colour tattoo. Most common reason for tattoo removal was found to be Army/ Police recruitment in 31 (70.5%) patients. In amateur tattoo at end of 10th session 93.34% had excellent to clear response while in professional tattoo it was only 20%. Conclusion: Amateur tattoos generally require six or more sessions and professional tattoos may need ten or more sessions.
HIV Treatment and Care Services in Yemen: Implications Of Internal Country Conflicts
Authors: Mohammed Mayada Faisal Nabih , Puteh Sharifa Ezat Wan
Published: December 2022

Introduction:

Yemen has been experiencing an internal conflict since 2011 influencing the HIV treatment program.

Objective:

This study aims to assess the implications of internal country conflicts on HIV-treatment program performance for policy formulation, programme planning and national resource mobilization.

Methodology:

Secondary data analysis and mixed methods of quantitative and qualitative were used. Data analysis was conducted through SPSS. The sample size was 84 for quantitative and 35 for qualitative.

Results:

Mean age of PLHIV was 40.5 (±10.6 SD) years and 64.3% were males, 42.9% married, and 9.5% had HIV-positive children. 84.5% of PLHIV have more than one symptom at the first visit and most of them presented late with clinical stages 3 and 4. HIV/TB co-infection represents 9.5% for pulmonary TB and 2.4 for extrapulmonary TB. Access to ART during the conflict significantly depended on the residence of PLHIV (p < 0.0005) and (95% confidence interval (CI): 2.48 to 1.22) and on the availability of the clinic (p < 0.0005) with (95% CI: 1.007 to 1.953). 41.7% of PLHIV were LTFU, 25.7% gave conflict as the main reason, 66.6% of PLHIV experienced a change in ART regimen per lifetime, and 70.9% of them gave ARV stockout as the main reason. Most PLHIV had difficulty accessing services during conflict. Most PLHIV (13/20) were not comfortable with the quality of service. All HCPs mentioned that the HIV-treatment program is funded only by the Global Fund and experienced shortages of ARVs before and during the conflict.

Conclusion:

It is important to have national policies and resources for HIV-treatment programs so one can ensure the sustainability of services.
Evaluating Risk Management Perspectives of Parties in Construction Projects Funded by Vietnam Government’s Budget
Authors: Hai Dinh Tuan , Thuy Nguyen Thi
Published: December 2022

Background:

Risks always go with the activities of construction investment projects. The impact of risks, whether large or small, affects the project results. The proper risk assessment will help managers to have appropriate responses. Project parties with different roles will have different project participation goals. This can lead to a different view of risk between the parties in the project.

Aim:

This study will focus on examining the risk management perspectives of the parties during the project implementation phase for construction investment projects using Government’s budget capital in Vietnam.

Methods:

The author will use a multivariate regression model to consider the views of three main actors in the project, including the investor/project management board, the consultant, and the contractor.

Results:

The views of the parties are analyzed based on the parties' assessment of the impact of risks on project results.

Conclusion:

Risks are unavoidable in construction investment projects. Project parties need to assess risks properly and develop appropriate responses.
Factors Influencing Optimal Glucose Control among Type II Diabetes Patients: From the Health Behaviour Models’ Perspective
Authors: Rajkumar Eslavath , Kruthika GT , Angiel Ruth Padiri , Lakshmi R , Monica Daniel , Romate John , John Abraham
Published: December 2022

Background:

Diabetes is a global health issue and one of the top ten causes of mortality, requiring focused research for understanding and implementing appropriate methods of diabetes management. Among the many approaches to managing optimal glucose control, embarking on the factors that influence engaging in health behaviours, such as managing glucose control, plays a pertinent role in addressing effective glucose control management.

Objective:

The present study has attempted to understand the influence of various factors (at the individual level and social level) on optimal glycemic control, which is considered one of the efficient parameters of diabetes management, utilizing the predominant health behaviour models- health belief model, theory of planned behaviour and socio-ecological model.

Methods:

This correlation study was conducted among 266 individuals from the Indian state of Karnataka. The purposive sampling technique was adopted to select participants over 18 years and those suffering from Type II diabetes.

Results:

The Pearson correlation analysis showed a significant positive relationship between perceived severity and HbA1c value and a inverse correlation with interpersonal relations and community domains. The multiple linear regression analysis results showed the statistically significant predictors of perceived severity, perceived benefits and interpersonal domains on glucose control.

Conclusion:

The study results put forward the influence of individual-level factors such as perceived severity, perceived benefits, and interpersonal factors in achieving optimal glucose control among type II diabetes patients. The study also highlights the importance of creating more awareness, especially in the Indian context with very low health literacy, which could help enhance the perceived benefits of diabetes specific health behaviours.
Изменение электронной структуры поверхности GaN/Si(111) при адсорбции Li
Authors: Тимошнев С.Н. , Бенеманская Г.В. , Мизеров А.М. , Соболев М.С. , Эннс Я.Б.
Published: December 2022

The electronic structure of the epitaxial GaN/Si(111) layers and the Li/GaN/Si(111) interface with a monolayer Li coverages has been studied in situ under ultrahigh vacuum conditions. The experiments were carried out using photoelectron spectroscopy with synchrotron radiation in the photon energy range 75 eV – 850 eV. The photoemission spectra in the valence band and the core levels of Ga 3d, N 1s, and Li 1s are studied for the monolayer Li coating. It is found that Li adsorption causes a significant decrease in the intensity of the photoemission line of the intrinsic surface state and the appearance of an induced surface state due to charge transfer between the adsorbed Li layer and surface Ga atoms. It has been found that the GaN/Si(111) surface has predominantly Ga polarity. The Li/GaN/Si(111) interface has a semiconductor character.
Анализ термического профиля при моделировании начального этапа синтеза из газовой фазы наночастиц Cu-Au
Authors: Гафнер Ю.Я. , Рыжкова Д.А.
Published: December 2022

The production of particles from the gas phase is one of the main physical methods for the synthesis of nanostructured materials, the obvious advantages of which include good control of the target composition of the resulting nanomaterial. However, the determination of clear dependences between the initial parameters of experimental setups and the size of nanoparticles is not an easy task, requiring a detailed study of the processes of formation, growth, and agglomeration of nanoclusters. Another problem is that metal nanoparticles of identical chemical composition and size can be in different structural states or have different levels of defects. The processes underlying the formation of the structure of such nanoparticles are also not completely clear, especially at the very initial stage of synthesis from the moment of decomposition of precursors to the formation of primary stable nuclei. Therefore, in the presented work, the molecular dynamics method was used to simulate the process of synthesis of Cu-Au nanoclusters of various target compositions from the high-temperature gas phase. Based on the data obtained, conclusions were drawn about the main stages of the evolution of the model system. It is shown that the initial stage of synthesis consists of five different stages, gradually leading to the formation of primary spherical CuAu binary alloy nanoparticles with a clear extrusion of gold atoms to the surface.
Эффект Мейсснера и структурная неоднородность в ВТСП YBa-=SUB=-2-=/SUB=-Cu-=SUB=-3-=/SUB=-O-=SUB=-6.92-=/SUB=-
Authors: Мамсурова Л.Г. , Гаврилкин С.Ю. , Мамсуров И.В.
Published: December 2022

For optimally doped high-temperature superconductors YBa2Cu3O6.92 with various degrees of structural inhomogeneity, the influence of this inhomogeneity on the manifestation of the Meissner effect is considered. The measurement results indicate that for the samples under study, for which almost identical superconducting transition Tс = 92K temperatures were realized, the Meissner effect values turned out to be different and correlated with the degree of structural inhomogeneity, which is also characteristic of other magnetic properties.
Изменение упругих деформаций в пленках SiC в процессе роста методом согласованного замещения атомов на подложках Si
Authors: Еремеев Ю.А. , Воробьев М.Г. , Гращенко А.С. , Семенча А.В. , Осипов А.В. , Кукушкин С.А.
Published: December 2022

Sequential stages of synthesis of SiC epitaxial films on n- and p-type Si(111) substrates in a mixture of carbon monoxide and silane are studied by X-ray diffraction (XRD) and Raman scattering methods. It was found that the elastic strain in SiC films grown on n-type Si(111) is absent in contrast to SiC films grown on p-type Si(111), where the deformations are formed and completely relaxed by the 40th minute of synthesis. A dramatic change in the SiC film structure is observed on the third minute of the growth, which is associated with the formation and growth of pores in the SiC layer. Differences in the lattice constants of SiC films grown on p- and n-type Si substrates are determined and verified via analysis of the change in the curvature of SiC/Si wafers.
Электронная структура и динамика решетки соединений Be-=SUB=-2-=/SUB=-NA (A=F, Cl, Br, I) со структурой антихалькопирита
Authors: Гордиенко А.Б. , Басалаев Ю.М. , Тимофеев В.С.
Published: December 2022

The new group of compounds with an antichalcopyrite structure and being isocationic series of Be2NA (A = F, Cl, Br, I) is studied within the local approximation of density functional theory. The results of the calculations performed include the basic parameters of crystal structure characteristics of electronic structure, lattice dynamics and chemical bonding based on maps of electronic density and electron localization function, which exhibit a well-pronounced dependence on the atomic number of the halogen atoms.
Механизм электропереноса в суперионном проводнике Sr-=SUB=-0.7-=/SUB=-La-=SUB=-0.15-=/SUB=-Lu-=SUB=-0.15-=/SUB=-F-=SUB=-2.3-=/SUB=- со структурой флюорита
Authors: Сорокин Н.И. , Каримов Д.Н.
Published: December 2022

The ionic conductivity of the superionic conductor Sr0.7La0.15Lu0.15F2.3 with the fluorite-type structure (type CaF2, sp. gr. Fm-3m) had measured by the impedance spectroscopy in the temperature range 385–794 K. Bulk crystals of a three-component solid solution (lattice parameter a = 5.7726(1) A) had obtained from the melt by the directed crystallization technique. Temperature dependence ionic conductivity σdc(T) satisfies the Arrhenius–Frenkel equation with the activation enthalpy of the electrical
conductivity Hσ = 0.706 ± 0.05 eV. The value of σdc is 1.5 10–5 S/cm at 500 K. Based on the analysis of electrophysical and structural studies of fluorite-type solid solutions in SrF2–LaF3 and SrF2–LuF3 systems, the microscopic model of ion transport in the Sr0.7La0.15Lu0.15F2.3 crystal was proposed. The concentration and mobility of charge carriers were calculated: nmob = 7.8 × 1020 cm–3 and μmob = 1.2 × 10–7 cm2/Vs at 500K.
Устойчивость пьезокерамики к процессу радиационной аморфизации при работе в токамаке ИТЭР
Authors: Mухин Е.Е. , Смирновa Е.П. , Бабинов Н.A. , Ходунов И.A. , Смирнов Р.С. , Кулыгин М.С.
Published: December 2022

Piezoelectric motors designed for operation in ITER tokamak-reactor must be tested for stability under severe radiation conditions. Properties of lead zirconate-titanate - the most common type of piezoelectric materials - were analysed from the point of view on influence of radiation. It is shown that at the expected in ITER level of radiation, this piezoceramic has a good potential for resistance to radiation amorphization and depolarization.
Электронная структура ультратонких интерфейсов Cs/Bi-=SUB=-2-=/SUB=-Se-=SUB=-3-=/SUB=-
Authors: Бенеманская Г.В. , Тимошнев С.Н.
Published: December 2022

The electronic structure of ultrathin Cs/Bi2Se3 interfaces has been studied by photoelectron spectroscopy using synchrotron radiation. The experiments were carried out in situ in an ultrahigh vacuum with submonolayer Cs coverages on Bi2Se3 samples. It was found that the adsorption of Cs causes changes in the spectra of the core levels of Bi 4f, Bi 5d, and Se 3d. It has been established that Cs atoms are adsorbed predominantly on Bi atoms in the upper surface layer. The states of the valence band are studied for a clean Bi2Se3 surface and for the Cs/Bi2Se3 interface. Near the Fermi level, 2D topological states have been found. Two induced surface states appear in the region of the valence band upon adsorption of Cs.
Fortifying Health Care Intellectual Property Transactions With Blockchain (Preprint)
Authors: Liang Huan-Wei , Chu Yuan-Chia , Han Tsung-Hsien
Published: December 2022

BACKGROUND

Intellectual property (IP) is a substantial competitive advantage in the health care industry. However, the COVID-19 pandemic highlighted the need for open innovation and collaboration for the greater good. Despite this, the industry faces challenges with innovation owing to organizational and departmental barriers. A secure platform is necessary to facilitate IP sharing without compromising the rights of IP owners.

OBJECTIVE

This study proposes a blockchain-based framework to secure IP transactions in health care and bring social impact.

METHODS

This study reviews existing researches, publications, practical cases, firm and organization websites, and conferences related to blockchain technology, blockchain in health care, blockchain in IP management, IP pledge research, and practice of IP management blockchain. The platform architecture has 7 components: pledgers, advanced research technology (ART), IP pledge platforms, IP databases, health care research, seeking ART, and transaction condition setting. These components work together seamlessly to support the sharing and pledging of ART and knowledge, while ensuring the platform’s transparency, security, and trust.

RESULTS

The open IP pledge framework can promote technology dissemination and use, reduce research and development costs, foster collaboration, and serve the public interest. Medical organizations’ leadership and support and active participation from stakeholders are necessary for success. By leveraging blockchain technology, the platform ensures tamper-proof and transparent transactions and protects the rights of IP owners. In addition, the platform offers incentive mechanisms through pledge tokens that encourage stakeholders to share their ART and contribute to the platform.

CONCLUSIONS

Overall, the proposed framework can facilitate technological innovation, tackle various challenges, and secure IP transactions. It provides a secure platform for stakeholders to share their IP without compromising their rights, promoting collaboration and progress in the health care industry. The implementation of the framework has the potential to revolutionize the industry’s approach to innovation, allowing a more open and collaborative environment driven by the greater good.
Impact Factors of COVID-19 Vaccination Hesitancy in patients after lung cancer surgery: an outpatients-based cross-sectional study (Preprint)
Authors: Wang Xiao-Wen , Qu Can , Qu Can , Li Lin-Jun , Huang Chun , Chen Dan , Wu Qing-Chen
Published: December 2022

BACKGROUND

The safety and efficacy of several vaccine candidates have been tested and found to be effective and safe against COVID-19. But little is known about the actual level of people with lung cancer willing to accept a COVID-19 vaccine and the impact factors that affect acceptability.

OBJECTIVE

The purpose of this study was to determine the prevalence of vaccine hesitancy in lung cancer patients after surgery and characterize underlying factors contributing to reluctance.

METHODS

An clinical survey was inducted from May 1, 2021, to August 20, 2021. Eligible participants were 18 years or older, were diagnosed with lung cancer, and received lung cancer surgery, including lobectomy, sublobectomy, and pneumonectomy. Data were collected on a self-administered questionnaire from 294 lung cancer patients after surgery.

RESULTS

Among the final included 281 participants, 54.1% were female, and 93.6% were of Han ethnicity. 48.0% were in pathologic stage I, 36.3% in stage II, 10.3% in stage III, and 5.3% in stage IV. The vaccination hesitancy/refusal rate was 41.6%. In multivariable regression analysis, age over 60 years old, low educational level, duration of cancer (< 1 year), subjective health status, current cancer treatments use, presence of postoperative pain, and report of the items “ever hesitated or refused to get a vaccination,” “get negative information about getting the COVID-19 vaccine”, “worried about vaccine adverse reactions,” and “worried about the COVID vaccine interferes with cancer treatments” were independently associated with hesitant of the COVID-19 vaccine.

CONCLUSIONS

Vaccine hesitancy is common among lung cancer patients after surgery, related mainly to health status and concerns about side effects, worsens cancer prognosis, and interferes with cancer treatments. These results suggest that vaccination programs may need tailoring to specific populations’ hesitancy.
Phytochemical Profiling of Gynura procumbens (Lour.) Merr. Leaves and Stem Extracts Using UHPLC-Q-Orbitrap HRMS
Authors: Septaningsih Dewi Anggraini , Putra Cecep Abdurohman , Suparto Irma Herawati , Achmadi Suminar Setiati , Heryanto Rudi , Rafi Mohamad
Published: December 2022

In Indonesia, Gynura procumbens (Lour.) Merr., known as Longevity Spinach or Sambung Nyawa, is commonly grown in tropical and subtropical Asian countries. Many biological activities of G. procumbens have been reported. As we know, the composition and concentration of metabolites, as well as plant parts will significantly affect the biological activities. In this work, UHPLC-Q-Orbitrap-HRMS was used for the putative identification of metabolites present in 70% ethanol extract of G. procumbens leaves and stem extract. Also, we performed clustering of G. procumbens leaves and stem extracts using principal component analysis (PCA) with the peak area of the identified metabolites as the variable. Thirty-one metabolites were identified, and the number of identified peaks in the leaves is higher than in the stem. Those identified metabolites are phenolics, fatty acids, oxo monocarboxylic acids, porphyrins, and chlorophyll fragments. The PCA results showed that the leaves and stem extracts could be grouped, indicating that the composition and concentration of detected compounds differed.
Low-Calorie Coal Liquefaction Products as an Alternative Fuel Oil
Authors: Zetra Yulfi , Febriati Anis , Nirmala Dyah , Burhan Rafwan Year Perry , Firmansyah Arizal , Nugraheni Zjahra Vianita
Published: December 2022

Liquefaction of low-rank coal has been done to optimize the utilization of low-rank coal, which is less economical for obtaining alternative fuel oil. Coal samples were taken from the Bukit Pinang coal mine, Samarinda Ulu, East Kalimantan. Coal was liquefied using the NEDOL procedure at PUSPITEK, Serpong, South Tangerang, Indonesia. This Bukit Pinang coal liquefaction produces five fractions consisting of Naphta, Light Oil (LO), Middle Oil (MO), Heavy Oil (HO), and Coal Liquid Bottom (CLB) fractions. The liquefaction yield was dominated by the HO and CLB fractions (> 50% by weight). The naphtha, MO and LO fractions were fractionated using SiO2 GF254 Thin Layer Chromatography (TLC) plate. It produced aliphatic and aromatic hydrocarbon fractions. Aliphatic hydrocarbon fractions were analyzed using a Gas Chromatography-Mass Spectrometer (GC-MS), while the aromatic hydrocarbon fractions were not analyzed. Mass spectrum studies showed that the components consisted of n-alkanes, isoalkanes (branched alkanes), cycloalkanes and alkyl cycloalkanes. The aliphatic hydrocarbon components resulting from the liquefaction of low-rank coal showed its equivalence with the components that make up fuel oil. Therefore, this coal liquefaction can be suggested as an optimization for low-rank coal, which is less economical.
Comparative Analysis of the English Translations of Ba Sheng Gan Zhou from the Perspective of Three Aspects of Beauty
Authors: Wei Zhongtang
Published: December 2022

This paper comparatively analyzes four English translations of the Song Ci Ba Sheng Gan Zhou from the perspective of Three Aspects of Beauty created by Xu Yuanchong, which are beauty in sense, beauty in sound and beauty in form. By illustrating the differences, especially the strengths and weaknesses of four English translations, this paper aims at expanding the dimensions of the understanding of the translations of this popular Chinese literary genre in Song Dynasty, discussing the best English translation and carving one academical and theoretical way for the spread of Chinese cultures.
Assessment of the Health Territorialization Process: Family Health Strategy Team in Marabá-PA
Authors: Lopes Francimar Neto de Almeida , Reis Kecyani Lima dos , Cardoso Márcia Núbia Amorim , Carvalho Maria Camila Amorim , Gomes Paula Hernandes
Published: December 2022

Introduction: In Brazil, territorialization has been used in public policies through different public instruments that promote social improvement or protection. These territorialized policies seek articulation between the various national, state and municipal spheres, with specific programs and actions built on territorial bases, the main example being the SUS. The ESF acts as a new basis for intersectoral articulations, due to the greater proximity of professionals with the population and the interactions in the territory covered, allowing the verification of problems that affect the health-disease process. Objective: To evaluate the territorialization of the population that make up the microregions that is covered by Family Health Strategy Teams in the municipality of Marabá-PA. Methodology: This is a descriptive, analytical study with a quantitative approach of the situational health reports of the Family Health Strategy teams in the municipality of Marabá-PA. Results and Discussion: In 2022, so far, it has a coverage of 36%, so we can say that the primary care of the municipality is undergoing a transition process, due to this, the ascription of the population is also evolving. Currently, the city of Marabá-PA is made up of 24 Health Units, 14 in the urban area and 10 in the rural area. Conclusion: The process of territorialization in this health team is hampered by the transition of health systems, making it difficult to create the profile of the enrolled population. In addition, the data evaluated demonstrated the importance of the presence of primary health care in order to achieve the universal coverage that the SUS advocates, improving health indicators.
El campus moderno de la Universidad Autónoma de Campeche: taxonomía de alteraciones
Authors: Domínguez Vargas Carlos Alfonso de Jesús
Published: December 2022

El artículo hace un recuento de las ideas y planteamientos del gobernador Alberto Trueba Urbina y del Arq. Joaquín Álvarez Ordoñez en el desarrollo del proyecto del Campeche Nuevo en la década de 1960, del cual el campus de la Universidad Autónoma de Campeche formó parte integral. El interés principal es el análisis de la imagen arquitectónica de los proyectos subsecuentes de remodelación y ampliación que experimentó el campus a lo largo del tiempo, con el objetivo de establecer una taxonomía de dichas trasformaciones de forma periódica y secuenciada, para entender y categorizar así las modificaciones al diseño original de la universidad.
Transposiciones en la construcción de lo invisible: Atti Fondamentali: Life y Digestible Gulf Stream
Authors: Pierpaoli Barbara
Published: December 2022

El presente texto analiza y compara dos proyectos: Atti Fondamentali: Vita, de Superstudio, y Digestible Gulf Stream, de Philippe Rahm, con el objetivo de reflexionar acerca de ellos no solamente como proyectos utópicos que subvierten los límites de la disciplina, sino desde su relevancia presente como obras que aportan al mundo material. Es decir, cómo dos proyectos, de tiempos diferentes, pueden ayudar a imaginar otros habitares posibles, lo que encarna una arquitectura entendida no sólo como edificación de lo material sino también como construcción de lo invisible.