bluuebunny/crossref_metadata_2025 huggingface dataset:
Autologous hematopoietic bone marrow and concentrated growth factor transplantation combined with core decompression in patients with avascular necrosis of the femoral head
Authors: Yousif Nasser Ghaly ,   Department of Medicine, Medical College, Al Muthanna University, Samawah, Iraq,   * Corresponding Author: Nasser Ghaly Yousif, Department of Medicine, Medical College, Al Muthanna University, Samawah, Iraq. E-mail: Yousif_ghaly@mu.edu.iq, Al Kilabi Adnan Essa Kadhum ,   Department of Surgery, Medical College, Kufa University, Kufa, Iraq, Hatem Karrar Kareem ,   Department of Surgery, Medical College, Jabir Ibn Hayyan Medical University, Najaf, Iraq, Al-Albaseesee Hamdullah Hadi ,   Department of Surgery, Medical College, Kufa University, Kufa, Iraq, Al-Fatlawy Wejdi Abbass Yassin ,   Department of Surgery, Medical College, Kufa University, Kufa, Iraq, Alhamadani Majid ,   Department of Surgery, Ministry of Health, Al Muthanna, Iraq, Nöth Ulrich Aran ,   Department of Regenerative Research, College of Medicine, Colorado University, Boulder, Colorado, Altmimi Ahmed ,   Department of Biology, Ministry of Health, Al Muthanna, Iraq
Published: May 2023

The study aimed to assess the effectiveness of autologous hematopoietic bone marrow and concentrated growth factor (CGF) transplantation and core decompression in patients with avascular necrosis of the femoral head (ANFH). We performed a single-center prospective study on 31 patients with non-traumatic early-stage (stage I to III) ANFH based on the 1994 classification of the Association Research Circulation Osseous (ARCO). The patients were subjected to bone marrow aspiration from the posterior iliac crest, separation, and concentration of growth factors from the bone marrow aspirate, core decompression of the femoral head, and injection of hematopoietic bone marrow and CGFs into the necrotic lesion. Patients were evaluated using the visual analogue scale, the WOMAC questionnaire, and X-ray and MRI examinations of the hip joints before, at 2, 4, and 6 months after the intervention. Patients had a mean age of 33 years (range 20–44 years), 19 (61%) of them being male and 12 (39%) females. The presentation of the disease was bilateral in 21 patients and unilateral in 10 patients. The main cause of ANFH was steroid treatment. The mean VAS and WOMAC scores were 48.37 (SD: 14.67) out of 100, and the mean VAS pain score was 50.83 out of 100 (SD: 20.46), respectively, before transplant. This value significantly improved to 22.31 (SD 12.12) of 100, and the mean VAS pain score was 21.31 of 100 (SD: 20.46) (P=0.04). MRI showed a significant improvement (P=0.012). Our results suggest that autologous hematopoietic bone marrow and CGFs transplantation with core decompression have a beneficial effect in early-stage ANFH.
Correction to: The effect of endometriosis on fertility in an animal model
Authors: Kanellopoulos Dimitrios ,   Laboratory of Experimental Surgery and Surgical Research N.S. Christeas, National and Kapodistrian University of Athens, Athens, Greece,   * Corresponding Author: Dimitrios Kanellopoulos, Laboratory of Experimental Surgery and Surgical Research N.S. Christeas, National and Kapodistrian University of Athens, Athens, Greece. E-mail: drdimitrios8@gmail.com, Karagianni Dimitra ,   1st Department of Pathology, National and Kapodistrian University of Athens, Athens, Greece, Pergialiotis Vasilios ,   Laboratory of Experimental Surgery and Surgical Research N.S. Christeas, National and Kapodistrian University of Athens, Athens, Greece, Nikiteas Nikolaos ,   2nd Propaedeutic Department of Surgery, National and Kapodistrian University of Athens, Athens, Greece, Lazaris Andreas C ,   1st Department of Pathology, National and Kapodistrian University of Athens, Athens, Greece, Iliopoulos Dimitrios ,   Laboratory of Experimental Surgery and Surgical Research N.S. Christeas, National and Kapodistrian University of Athens, Athens, Greece
Published: May 2023

This corrects the article on pages 1170–1173, vol. 15, PMID: 36415526.
Long Term Evolution Network Planning Using The Backhaul Microwave Link in The Village Wangunharja Lembang District
Authors: Zakaria Zikri Kurniawan
Published: May 2023

Wangunharja village has an area of 832 ha and a population of 8256. In this village, 4G LTE network coverage still does not reach the entire region. Therefore, LTE network planning is needed to expand coverage in the area. This study was carried out by analyzing and planning LTE networks use microwave backhaul in Wangunharja Village. The first step is to check the quality of the signal along the main line of the village. Then, plan for capacity and LTE network coverage to determine the number of sites needed. Next, microwave backhaul planning is carried out with work frequency based on the distance of the backhaul link. Based on the LTE network planning the calculations show that two sites are required to cover the Wangunharja Village area. Furthermore, planning simulations are carried out using simulation software, and the values of the three parameters measured have met the operator's KPI standards. With a microwave link distance of 2.87 km, the operating frequency of the microwave antenna operates at 11 GHz.The results of microwave link calculations and simulations for the value of the received power level are -18.95 dBm, with a gain antenna of 45.8 dBi obtained fading margin of 49.04 dBm so that the availability value or level of availability in one year is 99.999%.
Heat-Transfer Gauge Arrays for Identifying Spot Initiation in Hypersonic Transitional Boundary Layers
Authors: Mee David J. , Raghunath Sreekanth , McGilvray Matthew
Published: May 2023

The initiation and growth of turbulent spots in transitional hypersonic boundary layers can influence the transition length and the distribution of heat transfer and skin friction through the transitional region. There is debate in the literature about whether spots initiate in a small band at the start of transition or throughout the transitional region. This paper presents a new design of arrays of thin-film heat transfer specifically designed to detect whether spots initiate in a small band. The gauges were arranged in two spanwise rows at different streamwise locations and were tested on a 7° blunt cone in the T4 Stalker Tube. It is shown that such instrumentation is capable of identifying that some spots initiate between the rows when other spots have already formed upstream of the first row. This demonstrates that the breakdown of laminar boundary layers is not concentrated in a region of small streamwise extent in the current hypersonic flows.
Educação em saúde com estudantes sobre autocuidado e Infecções Sexualmente Transmissíveis
Authors: Lima Layane da Silva , Bessa Marcelino Maia , Gonçalves Ivson dos Santos , Moura Karina Morais , Carvalho Matheus Fernandes , Alves Josefa Jamilla Martins , Bessa Mônica Silva de , Ruiz Clara Rittmeyer , Freitas Rodrigo Jácob Moreira de , Cavalcante Keylane de Oliveira
Published: May 2023

Objetivo: Relatar a experiência vivenciada numa ação educativa sobre autocuidado e Infecções Sexualmente Transmissíveis com estudantes universitários. Relato de experiência: Este estudo foi oriundo da vivência de uma educação em saúde com estudantes de um curso superior de uma universidade do interior do nordeste brasileiro. As atividades foram planejadas a partir do referencial teórico proposto pelo Arco do diagrama, do Método do Arco de Maguerez, apresentado por Bordenave e Pereira e da Teoria de Intervenção Práxica de Enfermagem em Saúde Coletiva (TIPESC). A intervenção consistiu na atividade com o título “Árvore dos Prazeres” e foi dividida em três momentos. Foram distribuídas folhas de coloração distinta, fazendo alusão aos prazeres, riscos e proteção. Após montar a árvore, os alunos retiraram do caule afirmativas de acordo com as temáticas apresentadas para discussão. Por fim, foi confeccionado maçãs ilusórias que continham perguntas sobre o tema, os alunos julgaram-nas como corretas ou não, avaliando, assim, se houve aprendizado. Considerações finais: a educação popular em saúde é uma ferramenta crucial para os profissionais de enfermagem, pois permite articular o conhecimento popular e científico no intuito de contribuir para a melhoria da qualidade de vidas dos sujeitos, promovendo o diálogo entre profissionais da saúde e sociedade.
Efeitos gerados na saúde mental de pacientes oncológicos em meio à pandemia da COVID-19
Authors: Pessanha Afrânio Simões , Percu Breno Silva , Leite Renan Thomazini , Mattos Júnior Luiz dos Santos Freitas , Guerrero Lorenzo , Aguiar Júlia Silveira , Mello Luiza de Moura , Silva Caio de Oliveira da , Pimentel Gabriela Santana , Peixoto Waleska Vitória de Oliveira Tostes
Published: May 2023

Objetivo: Compreender a influência da pandemia da COVID-19 na saúde mental de pacientes oncológicos. Revisão Bibliográfica: A pandemia da COVID-19 impactou de maneira direta na saúde mental dos pacientes oncológicos. Esses pacientes fazem parte do grupo de risco do vírus pandêmico uma vez que possuem o sistema imunológico deprimido podendo ser gravemente atingido pela doença. Dessa maneira, a pandemia fez com que o isolamento social dessas pessoas fosse mais intenso. A depressão que já é desencadeada em vários casos pela doença se intensificou com essa reclusão social, com a minimização do tratamento e adiamento de cirurgias, consequentemente, parcelas de pacientes oncológicos tiveram piora no seu estado de saúde. Além disso, é importante ressaltar que esses distúrbios psíquicos irão atuar no organismo modificando a forma que ele responde às células cancerígenas e prejudicando a resposta imunológica. Considerações Finais: Diante do pressuposto, torna-se necessário fornecer um suporte biopsicossocial aos pacientes oncológicos que vivenciaram as dificuldades da pandemia e priorizar o serviço de atendimento a esses pacientes de forma que eles possam receber o tratamento adequado mesmo em períodos turbulentos.
Human Organoids, their Perspective, and Applications for Personalized Therapy: Rapid Review
Authors: Pratap Pushpendra D. , Ahmad Sharique
Published: May 2023

Organoids are cell cultures that are three-dimensional (3D) and include some of the most significant traits of the organ being modeled. These in vitro culture techniques can recreate some activities of the represented organ, to enable these cell types specific to organs to self-organize into a spatial arrangement comparable to that found in vivo. Adult stem cells from tissue samples, a single adult stem cell, or pluripotent stem cells that have undergone directed differentiation can all be used to create organoids. Since some organoid model systems have an active stem cell population, the organoids can be greatly expanded. Organoid culturing methods as of now have been generated to mimic the tissue architectures of the three principal cell lines. Although there are several techniques for cultivating cells that are unique to different tissues, Typically, Matrigel® or another acceptable extracellular matrix is used to implant the appropriate tissue-specific progenitor cells or pluripotent stem cells. The stem cell population is maintained by the cells being cultivated in cell culture environments with certain growth factors that closely resemble the in vivo signals needed. Under these circumstances, the interconnected cells multiply and self-organize into 3D organoids that can last forever and be accessed by many systems. In addition, these cultures have proven to be exceptionally stable genetically throughout passage; after 3 months in culture, whole genome sequencing of liver organoids made through clonal expansion from only one hepatic progenitor cell just one equivalent base mutation was found. In vitro cell culture is being revolutionized by organoids, which offer useful and medically accurate models that accurately reproduce the essential features of the modelled tissue.
Prevalence and causes of visual impairment and use of low-vision devices at a tertiary eye hospital in western Uttar Pradesh, India
Authors: Singh Mahendra , Chaurasiya Suraj Kumar , Chauhan Lokesh
Published: May 2023

Objectives:

The objective of this study was to determine the hospital-based prevalence and major causes of visual impairment in patients attending the low-vision clinic of a tertiary eye institute.

Materials and Methods:

This study was a retrospective non-intervention hospital-based study. Clinical records of visually impaired patients presented to the department of low vision from February 2017 to December 2021 were retrieved. Blindness has been defined as the best-corrected distance visual acuity of <3/60 and/or <10° visual field in the better eye. Low vision was defined as a best-corrected distance visual acuity of <6/18 but equal to or better than 3/60 in the better eye. The presenting visual acuity, causes of low vision and blindness, and prescribed low-vision devices were recorded and analyzed to determine the prevalence and major causes of visual impairment.

Results:

Among 414 visually impaired patients, the prevalence of low vision and blindness was 52.9% (n = 219) and 47.1% (n = 195), respectively. Retinitis pigmentosa (n = 57, 13.8%) and glaucoma (n = 43, 10.4%) were the major causes of low vision; however, glaucoma (n = 55, 13.3%) and cortical visual impairment (CVI) (n = 37, 8.9%) were the major causes of blindness. A total of 229 low-vision devices were dispensed, of them 166 (40.1%) were distance and 63 (15.1%) were near devices.

Conclusion:

The hospital-based prevalence of low-vision patients was more as compared to blindness. The major causes of visual impairment were retinitis pigmentosa, glaucoma, and CVI. A comprehensive approach to the causes of low vision and low-vision services is needed to reduce the burden of visual impairment in the country.
Indian diabetic risk score screening of rural adults in Tamil Nadu
Authors: Kumaran K Myl , Vedapriya D. R. , Manoharan Aravind , Nirupama A Y
Published: May 2023

Objectives:

Diabetes is acknowledged as a key public health problem with the prevalence rate increasing globally and reaching epidemic proportions. It is high time that screening programs are implemented at the community level for early detection of the population, who are at risk of having diabetes mellitus.

Materials and Methods:

A community-based and cross-sectional study was conducted in the rural field practice area of a tertiary care hospital in Chengalpattu district, Tamil Nadu. The screening tool used to assess the risk status was the Indian diabetes risk score (IDRS) and the body mass index (BMI) of the participants was also calculated.

Results:

A total of 396 formed the study population with the males constituting 47.2% of the study population. The majority were more than 50 years of age. Evaluating the risk status of study subjects using IDRS, the higher IDRS risk score was seen in 48.2% of participants, 47.2% had moderate risk, while only 3.5% had low risk. About 54.2% (n = 198) of participants were found to have a BMI within the normal range, 18.4% were underweight, 20.5% were overweight, and obesity was seen in 6.8% of the participants. A statistically significant association was found between gender and IDRS risk status, whereas no significant association was found between BMI category and IDRS risk status.

Conclusions:

Almost half of the study participants belonged to the high-risk category using IDRS screening. For the mass screening of diabetes, IDRS seems practically feasible and acceptable.
Association between macrophage migration inhibitory factor-173G/C polymorphism and psoriasis risk: A meta-analysis
Authors: Qi Junhua , Zhang Yu , Zhang Lvya , Nie Gang
Published: May 2023

Background

The association between macrophage migration inhibitory factor (MIF)-173G/C polymorphism and psoriasis risk has been reported in several studies with inconsistent conclusions.

Aims

This study aims to obtain a more convincing estimate of the relationship between the MIF-173G/C polymorphism and psoriasis risk.

Methods

Web of Science, EMBASE, PubMed, Wan Fang Database and Chinese National Knowledge Infrastructure (CNKI) were searched up to September 2021 and eligible studies were collected. The pooled odds ratios with 95% confidence intervals were calculated to estimate the effects of MIF-173G/C polymorphism on psoriasis risk under different genetic models. All analyses were conducted using the STATA12.0 software.

Results

A total of 1101 psoriasis cases and 1320 healthy controls from 6 relevant studies were included in this meta-analysis. Pooled analysis suggested that MIF-173G/C polymorphism was associated with increased psoriasis risk under the allelic model (C vs. G: odds ratio = 1.30, 95% confidence interval = 1.04–1.63, P = 0.020), heterozygous model (GC vs. GG: odds ratio = 1.53, 95% confidence interval = 1.05–2.22, P = 0.027) and dominant model (CC + GC vs. GG: odds ratio = 1.51, 95% confidence interval = 1.05–2.18, P = 0.027).

Limitation

Very few studies on the MIF-173G/C polymorphism in psoriasis have been reported till now, thus the number of studies included in the present meta-analysis was relatively small. Due to the number of studies being relatively small and the lack of raw data, stratified analysis by ethnicity or type of psoriasis was not carried out.

Conclusion

This meta-analysis demonstrated that MIF-173G/C polymorphism might be related to psoriasis risk. Carriers of the C allele and the GC genotype might have higher odds to present with psoriasis.
Use of Advanced Elastomeric Skin Protectant on Venous Leg Ulcer Periwound Skin
Authors: Greenstein Emily
Published: May 2023

Introduction. VLUs are associated with prolonged wound healing, high recurrence rates, and fragile periwound skin. Objective. Skin protectant use with wound dressings and multilayer compression wraps was examined. Methods. Deidentified retrospective patient data were assessed. Patients received endovenous ablation, followed by application of zinc barrier cream to periwound skin before wound dressing and multilayer compression wrap use. Dressings were changed every 7 days, and zinc barrier cream reapplied. After 3 weeks, advanced elastomeric skin protectant use was initiated due to periwound skin injury during zinc barrier cream removal. Topical wound dressing and compression wrap use was continued. Wound healing and periwound skin condition were monitored. Results. Five patients presented for care with medial ankle VLUs. Within 3 weeks of zinc barrier cream use, unwanted product buildup was noted and removal often led to epidermal stripping. Skin protectant use was changed to advanced elastomeric skin protectant. All patients showed periwound skin improvement. Epidermal stripping was not observed with advanced elastomeric skin protectant, and the product did not require removal. Conclusions. In these 5 patients, advanced elastomeric skin protectant use under wound dressings and multilayer compression wraps resulted in improved periwound skin and reduced erythema compared with zinc barrier cream use.
Coupling Negative Pressure Wound Therapy with Instillation and Split-thickness Skin Graft for a Large Chronic Venous Leg Ulceration: A Case Report
Authors: Hussain Fahad , Lenz Robin
Published: May 2023

Introduction. Chronic VLUs are quite challenging to heal with many currently available treatment methods. The timing and combination of treatment methods is integral to successful wound healing. Objective. This case combined NPWTi coupled with biofilm killing solution, hydrosurgical debridement to prepare the wound bed, and STSG to achieve epithelialization. To the knowledge of the authors of the present study, no previously published case report has combined these methods for treatment of a chronic VLU. Case Report. This case report highlights a chronic VLU on the anteromedial ankle that healed in 2 months using NPWTi and STSG. Conclusion. The combination of NPWTi, hydrosurgery, and STSG to treat this patient resulted in successful wound healing, greatly reduced time to healing compared with standard of care, and allowed the patient to return to her normal lifestyle.
PENGEMBANGAN MEDIA PEMBELAJARAN MENGGUNAKAN CONSTRUCT 2 DENGAN PENDEKATAN SCAFFOLDING PADA MATERI LAJU REAKSI
Authors: Dwi Septiani Berliana , Okmarisa Heppy
Published: May 2023

Tujuan penelitian ini ialah guna pengembangan media pembelajaran menggunakan Construct 2 dengan pendekatan scaffolding pada materi laju reaksi yang tekriteria praktis, valid serta unik. Jenis penelitian ini ialah R&D memakai langkah 1-5 model peningkatan Borg & Gall: (1) pengkajian serta penghimpunan data (2) perangkaian, (3) perkembangan produk, (4) percobaan produk awal, serta(5) perbaikan produk. Pengkajian dilaksanakan terhadap semester ganjil tahun ajaran 2022/2023 di MAN 1 Pekanbaru kelas XII IPA. Instrumen penghimpunan data yang dipakai seperti angket uji praktikalitas, uji validitas serta uji respon siswa. Perolehan uji validitas ahli materi serta media didapat nilai sejumlah 91,19% (sangat valid). Uji praktikalitas guru didapat nilai sejumlah 93,42% (sangat praktis) serta uji respon siswa didapat nilai sejumlah 89,70% (sangat menarik).
PENGARUH ISLAMIC CORPORATE GOVERNANCE DAN SHARIA COMPLIANCE TERHADAP FRAUD PADA BANK UMUM SYARIAH
Authors: Azwirman  , Suryadi Ari , Novriadi
Published: May 2023

Berorientasi pada profit maximizer merupakan tujuan perbankan selaku institusi. Sebagai lembaga intermediasi keuangan maka bisnisnya didasarkan atas kepercayaan dari pihak yang terkait baik pihak pendana maupun pihak yang membutuhkan pembiayaan. Oleh sebab itu, perbankan syariah harus melaksanakan sharia compliance untuk mencegah terjadinya kecurangan yang dapat menurunkan kepercayaan pihak-pihak yang terkait. Penelitian ini bertujuan untuk meneliti pengaruh Islamic Corporate Governance, Islamic Income Ratio, Profit Sharing Ratio, Zakat Performance Ratio terhadap Fraud pada bank umum syariah, baik secara simultan maupun parsial. Bank umum syariah yang terdaftar di Otoritas Jasa Keuangan (OJK) periode 2017-2021 adalah populasi dalam penelitian. Purposive sampling digunakan dalam menentukan sampel sebesar 11 sampel. Metode analisis data menggunakan statistik deskriptif dan juga analisis regresi logistik. Hasil Penelitian ini menunjukkan bahwa Income Ratio dan Profit Sharing Ratio berpengaruh terhadap probabilitas suatu bank umum unutk melakukan Fraud sedangkan Islamic Corporate Gevernance dan Zakat Sharing Ratio tidak berpengaruh terhadap probabilitas suatu bank umum untuk melakukan Fraud.
Epistemologi Ekonomi Syariah
Authors: Erik Rayuanda  , Husni Thamrin
Published: May 2023

Penelitian ini bertujuan untuk mengkaji asal-usul ekonomi syariah, metodologi dan validasinya secara ilmiah. Apabila berbicara masalah epistemologi ekonomi syariah, berarti akan berbicara tentang hakikat ekonomi syariah dan dasar-dasarnya. Ekonomi Syariah berbasis epistemologi syariah karena hal ini berhubungan dengan worldview syariah itu sendiri. Metode yang digunakan dalam penelitian ini adalah melalui pendekatan deskriptif kepustakaan. Dalam penelitian ini, peneliti mengemukakan beberapa konsep epistemolgi ekonomi syariah, definisi epistemologi, dan metode epistemologi ekonomi syariah. Hasil dan kesimpulan dalam penelitian ini adalah sebuah disiplin ilmu, ekonomi Islam memiliki landasan epistemologi. Dimana epistemologi merupakan bagian filsafat yang menjelaskan upaya-upaya untuk mendapatkan pengetahuan dan kemudian mengembangkannya. Dalam hal ini, ekonomi Islam berbasis pada epistemologi keilmuan Islam.
Evaluation of phytotoxic effect of plant dry leaf based vermicompost on seed germination, growth and yield of fenugreek (Trigonella Foenum Graecum)
Authors: Divya J. , Vasudha Ranjan , Vrinda A.
Published: May 2023

Phytotoxicity is one of the most critical factors for determining whether any type of compost is suitable for agricultural use and in avoiding environmental hazards until it is recycled back to agricultural land. Composting is one of the best economic and environmentally sustainable means of managing different kind of wastes from different origins. The present study involves plant bioassay test conducted by using different amounts of soil and vermicompost. The treatments prepared are 25%, 50%, 75% and 100% including one control. For each trail, three replicates were maintained in order to get the accurate results. The seeds used for the study are fenugreek seeds. The mean values were calculated and used for interpretation of the results. From the plant bioassay experiments, various parameters like total seeds germinated, number of leaves, number of flowers, pods, seeds in pods, length of roots and shoots were counted and measured. From the experimental results, it was found that overall growth of plants was observed in 25% and 50% treatments compared to the other treatments and control. The plant bioassay tests clearly showed that soil with 25% to 50% of vermicompost mixing will be found beneficial for the growth and development of fenugreek plants.
Economic divergence and the role of disasters in Mexico and Central America
Authors: Rivas Valdivia Juan Carlos , Sánchez Vargas Armando
Published: May 2023

Traditionally, disasters have not been considered as factors that influence economic growth and convergence or divergence between countries. Using macroeconomic and disaster data for Mexico and Central America, it was found that disasters generate a negative effect on economic growth and exacerbate divergence. If disasters are omitted in the convergence-cointegration analysis, the results may be biased. With divergence, very small and poor economies compared to slightly richer economies, enter a vicious cycle in which they tend to increasingly diverge or to converge to lower levels of economic growth in the long run.
REACTION OF BORIC ACID WITH BENZYLAMINE
Authors: Строкова С.В. , Ленский М.А. , Ожогин А.В. , Корабельников Д.В. , Усков В.Г. , Петров М.А. , Горшков Д.С. , Квасков Д.В. , Балахнина А.В.
Published: May 2023

Исследована реакция борной кислоты (I) с бензиламином (II) в смеси растворителей о-ксилол-ДМСО. Обнаружено, что взаимодействие борной кислоты c бензиламином приводит к образованию поликомплекса (III а) бороксина с первичным ароматическим амином при азеотропной отгонке воды. Использование ДМСО необходимо в качестве промежуточного, инертного, высококипящего растворителя. Изучена структура полученного соединения методами ЯМР 1H, 11B и ИК-спектроскопии, элементного анализа. Исследована его термическая и термоокислительная деструкция, характеристическая вязкость. Полученное соединение обладает высокой термостойкостью как в инертной, так и в окислительной средах. Поликомплекс (III а) растворим в полярных органических растворителях (N,N-ДМФА, ДМСО, этиловый, изопропиловый спирты и другие.)

The reaction of boric acid (I) with benzylamine (II) in a mixture of solvents o-xylene-DMSO was investigated. It was found that the reaction of boric acid with benzylamine leads to the formation of a boroxine polycomplex (III a) with a primary aromatic amine during azeotropic water distillation. The use of DMSO is necessary as an intermediate, inert, high-boiling solvent. The structure of the obtained compound was studied by NMR 1H, 11B and IR spectroscopy, elemental analysis. Its thermal and thermo-oxidative degradation, characteristic viscosity are investigated. The resulting compound has high temperature resistance in both inert and oxidizing environments. Polycomplex (III a) is soluble in polar organic solvents (N,N-DMFA, DMSO, ethyl, isopropyl alcohols and others.)
REVIEW OF RESEARCH IN VISUAL TESTING OF WEB INTERFACES BASED ON ARTIFICIAL INTELLIGENCE METHODS
Authors: Спиридонов В.В. , Бубарева О.А.
Published: May 2023

Благодаря современным достижениям в области искусственного интеллекта (ИИ) и машинного обучения, а также их применения для тестирования программного обеспечения, пересечению ИИ и тестированию уделяется пристальное внимание. Статья посвящена обзору автоматизированного визуального тестирования с помощью методов искусственного интеллекта. Целью работы является обзор исследований применения искусственного интеллекта для тестирования web-приложений. В литературе по тестированию графического пользовательского интерфейса (GUI) особое внимание уделяется тестированию функциональности системы через ее графический интерфейс, а не тестированию визуальных аспектов самого графического интерфейса. В этой статье вводится понятие визуального тестирования как подмножества тестирования графического интерфейса. Чтобы исследовать визуальное тестирование, проведено исследование дефектов в четырех системах с открытым исходным кодом.

The purpose of the research is to study artificial intelligence tools and technologies for analyzing, processing and comparing With recent advances in artificial intelligence (AI) and machine learning, and their applications to software testing, the intersection of AI and testing is getting a lot of attention. The article is devoted to an overview of automated visual testing using artificial intelligence methods. The aim of the work is to review the research on the use of artificial intelligence for testing web applications. The graphical user interface (GUI) testing literature focuses on testing the functionality of a system through its GUI rather than testing the visual aspects of the GUI itself. In this article, we introduce the concept of visual testing as a subset of GUI testing. To explore visual testing, we conducted a defect study on four open source systems. We have found that visual defects account for 16% to 33% of reported defects in these systems. Two categories of visual defects are distinguished with six subcategories within each of them. Other findings are also reported to motivate the importance and need for systematic visual testing among researchers and practitioners.
NeRF IN REINFORCEMENT LEARNING FOR IMAGE RECOGNITION
Authors: Гайнетдинов А.Ф.
Published: May 2023

Актуальность. В статье рассматриваются методы распознавания изображений с использованием нейронных сетей разной архитектуры, в том числе обучения с подкреплением Q-Learning. Метод. Для обучения алгоритмов и их тестирования использовались наборы изображений 6 классов лесных животных. Изучалось 6 вариаций наборов данных, отличие в которых обусловлено разной долей обучающей выборки: от 40 до 80%. Проанализировано семь методик распознавания: CNN-AE и два подхода визуального управления (NeRF-RL, DRQ-V2) обучались на основе двух- и трехмерной сверточной нейросети и Q-Learning. Результаты работы. Все испытуемые модели показывают высокий процент точности независимо от соотношения обучающей и тренирующей выборки. Минимальные результаты были зафиксированы при использовании CNN-AE, тогда как NeRF-RL и DRQ-V2 на основе двухмерных и трехмерных CNN были более точными. Обучение методов NeRF-RL и DRQ-V2 используя метод Q-Learning привел к получению наиболее точных результатов. Использование Q-Learning для обучения алгоритма NeRF-RL позволяет достичь максимальных результатов. Эта архитектура была применена для распознавания животных и распределения изображений по классам. Выводы. Таким образом, объединение алгоритмов NeRF и обучения с подкреплением является эффективным и перспективным методом распознавания изображений для использования в обработке информации со скрытых камер с целью обнаружении лесных животных.

This study discusses image recognition methods that exploit different neural networks, including Q-Learning. The algorithms were trained and tested on images depicting 6 different classes of forest animals. A total of 6 image datasets with different amount of training data (40 to 80%) were taken. Here, seven image recognition techniques were analyzed: CNN-AE and two algorithms for visual continuous control (NeRF-RL and DRQ-V2), all trained on a two- and three-dimensional convolution neural network (CNN), as well as Q-Learning. All models had high accuracy; CNN-AE exhibited the lowest recognition accuracy, whilst NeRF-RL and DRQ-V2 based on 2D and 3D CNNs were more accurate. NeRF-RL and DRQ-V2 trained on data using the Q-Learning method yielded the highest accuracy. The use of Q-Learning to train the NeRF-RL algorithm provided the best result. This architecture has been applied for animal recognition and image classification into classes. Based on the research, the combination of NeRF algorithms and reinforcement learning is an effective and promising image recognition method for detecting forest animals in camera-trap images.
HYSTERESIS PROPERTIES OF QUICKLY HARDENED Nd-Fe-B ALLOYS
Authors: Ерёмин А.М. , Манаков Н.А. , Узенбаев Ф.Г.
Published: May 2023

Проведен сравнительный анализ гистерезисных свойств трех групп быстрозакаленных сплавов разной степени дисперсности. Сплавы, в которых кристаллиты Nd2Fe17B находятся в парамагнитной матрице Nd. Тонкий слой Nd разделяет кристаллиты Nd2Fe17B и блокирует обменное взаимодействие между ними. Сплавы стехиометрического состава Nd2Fe17B, в которых зёрна магнитотвёрдой фазы Nd2Fe17B находятся в непосредственном контакте друг с другом. Сплавы, обеднённые редкоземельным металлом по сравнению со стехиометрией Nd2Fe17B. Они представляют гетерогенную смесь зёрен фаз Nd2Fe17B и a-Fe. Максимальные значения коэрцитивной силы наблюдаются у микрокристаллических сплавов при основном механизме перемагничивания путем зародышеобразования обратных доменов. Повышенные значения остаточной намагниченности связаны с обменным взаимодействием между кристаллитами и реализуются у нанокристаллических сплавов, представляющих гетерогенную смесь зёрен фаз Nd2Fe17B и a-Fe и сплавов стехиометрического состава. Установлено, что форма и соотношение кривых намагничивания после термического размагничивания, размагничивания знакопеременным полем и обратным полем могут служить надежным свидетельством характера основного механизма перемагничивания сплава и его трансформации в зависимости от степени дисперсности микроструктуры.

A comparative analysis of the hysteresis properties of three groups of rapidly quenched alloys with different degrees of fineness has been carried out. Alloys in which Nd2Fe17B crystallites are in a paramagnetic Nd matrix. A thin Nd layer separates the Nd2Fe17B crystallites and blocks the exchange interaction between them. Alloys of the stoichiometric composition Nd2Fe17B, in which the grains of the hard magnetic phase Nd2Fe17B are in direct contact with each other. Alloys depleted in rare earth compared to Nd2Fe17B stoichiometry. They represent a heterogeneous mixture of grains of the Nd2Fe17B and a-Fe phases. The maximum values of the coercive force are observed in microcrystalline alloys with the main mechanism of magnetization reversal by nucleation of reverse domains. Increased values of residual magnetization are associated with the exchange interaction between crystallites and are realized in nanocrystalline alloys, which are a heterogeneous mixture of grains of the Nd2Fe17B and a-Fe phases and alloys of stoichiometric composition. It has been established that the shape and ratio of the magnetization curves after thermal demagnetization, demagnetization by an alternating field, and a reverse field can serve as reliable evidence of the nature of the main mechanism of alloy remagnetization and its transformation depending on the degree of microstructure dispersion.
Theoretical Substantiation of Optimum Energy Efficiency of Ultrasonic Wet Dispersing
Authors: Голых Р.Н. , Минаков В.Д.
Published: May 2023

Представлены и проанализированы известные предварительные экспериментальные результаты ультразвукового диспергирования суспензии. Обоснована необходимость определения оптимальных режимов, обеспечивающих максимальную энергоэффективность ультразвукового мокрого диспергирования. Предложены физический механизм и теоретическая модель ультразвукового диспергирования. Модель позволяет рассчитать фракционный состав дисперсных частиц и оценить, что максимальная энергоэффективность существует при фиксированной интенсивности для различных материалов твердых частиц.

The known preliminary experimental results of ultrasonic dispersing of suspension were presented and analyzed. The need for determination optimum modes providing maximum energy efficiency of ultrasonic wet dispersing is justified. The physical mechanism and the theoretical model of ultrasonic dispersing were proposed. The model allows to calculate fraction composition of dispersed particles and to evaluate, that the maximum of energy efficiency exists at fixed intensity for different materials of solid particles.
Effect of Quantum Delocalization on Temperature Dependent Double Proton Transfer in Molecular Crystals of Terephthalic Acid
Authors: Mondal Unmesh , Girotto Ivan , Hassanali Ali , Ghosh Prasenjit
Published: May 2023

Double proton transfers (DPT) are important for several physical processes, both in molecules and in the condensed phase. While these have been widely studied in biological systems, their study in crystalline environments is rare. In this work, using Path Integral Molecular Dynamics simulations we have studied temperature dependent DPT in molecular crystals of terephthalic acid (TPA). In accordance with experimental reports, we find evidence for a double proton transfer induced order-to-disorder transition that is sensitive to the inclusion of nuclear quantum effects. Our simulations show that in addition to the presence of L and R tautomers of terepthalic acid, there are a small but non negligible concentration of positive and negatively charged pairs of TPA molecules. At the onset of the transition at low temperatures, DPT likely occurs through a tunnelling mechanism while at room temperature, likely involves the dominance of activated hopping. Through an analysis of the electronic structure of the system using Wannier functions, we show that the H atom shuttling between the donor and acceptor O atoms involves a proton.
Dynamic mechanostereochemical switching of a co-conformationally flexible [2]catenane controlled by specific ionic guests
Authors: Yao Yueliang , Tse Yuen Cheong , Lai Samuel Kin-Man , Shi Yixiang , Low Kam-Hung , Au-Yeung Ho Yu
Published: May 2023

Responsive synthetic receptors for adaptive recognition of different ionic guests in a competitive environment are valuable molecular tools for not only ion sensing and transport, but also the development of ion-responsive smart materials and related technologies. By virtue of the mechanical chelation and ability to undergo large-amplitude co-conformational changes, described herein is the discovery of a chameleon-like [2]catenane that selectively binds copper(I) or sulfate ions and its associated co-conformational mechanostereochemical switching. This work highlights not only the advantages and versatility of catenane as a molecular skeleton in receptor design, but also its potential in constructing complex responsive systems with multiple inputs and outputs.
In-situ monitoring of the material composition in PBF-LB via optical emission spectroscopy
Authors: Ziefuss Anna Rosa , Streubel Rene , Gabriel Philipp , Eibl Florian , Barcikowski Stephan
Published: May 2023

Powder bed fusion using a laser beam of metals (PBF-LB/M) is a widely used additive manufacturing (AM) technique that enables the material-efficient fabrication of complex geometries in metallic parts. However, achieving high-quality parts with desired properties heavily depends on variances in the manufacturing process and powder composition, making quality control an indispensable aspect of almost all applications. Today, mainly grayscale imaging or pyrometry are employed, whereas in situ recording of chemical (compositional) information has rarely been done during LBF-LB/M. This pilot study explores the feasibility of in-situ optical emission spectroscopy (OES) for elemental analysis of metallic samples during PBF-LB, at the example of Nd-Fe-B. Our findings suggest that the local emissivity of Fe and Nd lines can serve as a reliable indicator to determine the temperature and elemental concentration in the plasma. The results showed that Online-OES during PBF-LB enables tracking of how Nd content in as-build parts critically depends on the laser parameter used while printing the part.
Supramolecular Protection with a Recyclable Molecular Container: an Efficient Strategy for the One-pot Selective Functionalization of Polyfunctional Substrates
Authors: Lambert Simon , Bartik Kristin , Jabin Ivan
Published: May 2023

The control of the selective transformation of a functional group on a substrate bearing multiple identical reactive functions is a major synthetic challenge. The use of macrocyclic molecular containers as supramolecular protecting units is in this context a promising strategy. We report here on a hexahomotrioxacalix[3]arene molecular container whose exceptional binding properties opens new directions for the supramolecular protection strategy. This macrocyclic receptor binds primary ammonium ions with high selectivity and affinity, allowing for the monofunctionalization of diamines. The reaction was readily achieved with various diamines and different types of reagents. The acid-base control of the protection/deprotection of the substrate furthermore allowed for the recovery and recycling of the molecular container and the subsequent in-situ accumulation of non-symmetric difunctionalized products, with remarkably no loss of selectivity over the reaction cycles. This recycling strategy considerably increases the synthetic viability of the supramolecular approach with only a catalytic amount of molecular container needed. The synthesis of products, such as non-symmetric diamino-diureas, which are difficult to obtain via classical synthetic routes, was also achieved through the one-pot reaction of mixtures of difunctional substrates monoprotected by the molecular container. The supramolecular protection strategy was finally extended to the selective functionalization of more complex polyamines such as a triamine and a lysine derivative. These results show that the use of a supramolecular protecting container for the functionalization of polyfunctional substrates presents many synthetic advantages over strategies using traditional protecting groups: i) it enables high chemo-, regio- and iteroselectivities through a one-pot protection/functionalization/deprotection sequence, ii) it avoids the introduction and removal of covalently linked protecting groups thus leading to high yield , iii) it allows the formation of unstable intermediates and the control of their reactivity, iv) it gives access to complex polyfunctional products whose synthesis remains challenging through classical synthetic methods.
Vision Gloves for Blinds
Authors: Nazareth Casey , I Sharath , Hegde Sathwik , Norohna Janishia , B S Dr.Pradeep ,   Professor, Dept. of CSE,  Mangalore Institute of Technology & Engineering, Moodabidri, INDIA
Published: May 2023

For people who are visually impaired finding things in an indoor setting that are present in a typical environment might be a difficult chore in a visually impaired person's daily routine. They must be assisted by one or the other to find an object, so to overcome this, an idea has been proposed to develop a glove that can be used by visually impaired individuals to detect objects in an indoor environment and will also function as an artificial eye for those with visual impairments. The glove will have a camera in the hand that will feed real-time footage to the Raspberry Pi so that it can process it, a voice recognition module that will be attached to the Raspberry Pi to identify the object, and a micro vibrating motor to indicate the location of the object. The visually impaired person uses the speech module's built-in microphone to issue voice commands. An approach that uses object detection to find the object is used to locate it. By giving visually impaired people a hands-free means to find objects in enclosed places, the proposed smart glove has the potential to greatly improve their daily life. Hence an efficient and user-friendly system is planned to build by combining computer vision, voice recognition, and haptic feedback technology.
Multilingual Repository on (DSpace): A Study of Open Archives Initiative and Protocol for Metadata Harvesting (OAI-PMH)
Authors:   Asst. Librarian, HSB Govt. (PG) College, Someshwar. Almora., Kumar Dr.Rajneesh , Kumar Dr.Ashish ,   University Librarian, Doon University, Dehradun, S.K. Dr.Pandey ,   University Librarian, Central University Jharkhand, Ranchi
Published: May 2023

The study discusses the use of multilingual institutional repositories in library and information science to provide access to scholarly and cultural content in multiple languages. The use of information and communication technology (ICT) has revolutionized library services, and the use of institutional repositories has added a new dimension to access scholarly works. The study shows the process of creating a multilingual repository to promote diversity, inclusivity, and accessibility in scholarly communication. And to support the preservation of cultural heritage, enhance discoverability of content, promote interoperability with other repositories, and support research and learning. The study features the OAI-PMH protocol facilitates standardized dissemination of metadata to make scattered information resources discoverable via A multilingual institutional repository which can increase accessibility, international outreach, and cultural exchange.
Studi Etnografi Tentang Stigmatisasi dan Konformitas Perempuan Perokok dalam Budaya Patriarki
Authors: Nangoi Jessica Priscilla , Daeli Onesius Otenieli
Published: May 2023

Penelitian ini mengenai fenomena merokok merupakan kegiatan yang umum dilakukan oleh masyarakat Indonesia. Peneliti menggunakan metode penelitian kualitatif dengan etnografi sebagai pendekatannya. Data dikumpulkan dengan melakukan wawancara informan kunci, diskusi kelompok terfokus, observasi langsung, dan webinar umpan balik. Data menunjukkan bahwa rokok sering diasosiasikan dengan laki-laki dan maskulinitas. Perempuan yang merokok dianggap sebagai pemberontak. Inilah alasan mengapa orang menstigmatisasi perokok perempuan. Stigma tersebut merupakan pengaruh kuatnya patriarki dalam masyarakat Indonesia dan konformitas perempuan secara turun-temurun terhadap praktik-praktik lokal. Meski sebagian, terdapat responden perempuan tidak peduli dengan penilaian orang lain. Namun, stigma tersebut membuat sebagian responden perempuan menahan diri untuk tidak merokok di ruang publik. Tujuan dari penelitian ini untuk mengetahui pendapat masyarakat tentang perokok wanita, menganalisis alasan mengapa wanita merokok, dan apa konsekuensi sosial menjadi seorang perokok. Temuan penelitian ini menjadi argument agar masyarakat berpikir kritis tentang kehidupan sosialnya sehingga tidak ada yang menjadi korban stigma termasuk para perempuan perokok.
Countering Radicalism in Social Media by Campaigning for Religious Moderation
Authors: Setia Paelani , Haq Mochamad Ziaul
Published: May 2023

This paper will discuss online media sites implementing religious moderation campaigns in Indonesia. The case study in this paper is the online media Harakatuna.com. The research method is qualitative, collecting data through virtual ethnography or online observations of the Harakatuna.com media page and Harakatuna Media's Instagram, Twitter, and Facebook social media accounts. This research found that it is not appropriate if the religious moderation campaign has only been carried out through conventional methods such as seminars, recitations, and workshops. Therefore, Harakatuna.com is present as a campaign agent for religious moderation by taking a role in social media. Consequently, Harakatuna.com carries out counter-narrative radicalism by introducing peaceful religious moderation in Indonesia with digital methods such as webinars, scientific publications, and opinion writing. Furthermore, Harakatuna.com also carries out a counter-ideological role against the Khilafahism ideology that Hizbut Tahrir Indonesia (HTI) echoes. Harakatuna.com carries out the counter-ideology through the Pancasila ideology campaign as the foundation of the nation and state by the values of religious teachings, including Islam. The roles carried out by Harakatuna.com are the actualization of the concept of a Cyber Islamic Environment, a new virtual world environment that can be used for the benefit of Muslims, one of which is the delivery of messages of religious moderation.