bluuebunny/crossref_metadata_2025_split huggingface dataset:
Significance of endometrial dysfunction markers in the pathogenesis of chronic endometritis in women with reproductive losses
Authors: Esedova A. E. , Idrisova M. A. , Gadzhieva A. M. 
Published: December 2021

Introduction. A review of the literature considering the problem of reproductive health against the background of chronic endometritis is presented. According to the literature, in the etiology and pathogenesis of infertility and habitual miscarriage, the main cause is the «uterine factor» (24-62%). Chronic inflammation in the uterine mucosa can lead to infertility, which increases the significance of this pathology. It is proved that most often the causative agents of this disease are representatives of conditionally pathogenic microflora. Chronic endometritis is an unexplored pathology associated with unfavorable reproductive outcomes, such as unsuccessful implantation and repeated miscarriage. Most scientists assume that inflammation develops against the background of a long-term persistence of an infectious agent. According to other scientists, the cause of the occurrence and development of chronic endometritis is an autoimmune process that contributes to the progression of inflammation. The article describes the mechanisms of impaired receptivity, endometrial microcirculation and changes in the ratio of cells of the immune system. In this article, we aim to give an overview of the diagnosis, etiology, pathophysiology and treatment of chronic endometritis, its effect on endometrial receptivity and its relationship with reproductive dysfunction.The aim of the study is to identify the main discussed aspects of the management of patients with chronic endometritis, to determine promising diagnostic methods.Materials and methods. The analysis and systematization of the data were carried out on the basis of scientific publications in the common database of Cyberleninka and PubMed.Results and Discussions. The article discusses the methods of laboratory, ultrasound and instrumental diagnostics used in Russia and abroad. The» gold standard « of diagnostics is a histological examination of the endometrial tissue material on the 7th10th day of the menstrual cycle. The article describes the mechanisms of impaired receptivity, endometrial microcirculation and changes in the ratio of cells of the immune system.Conclusion. Chronic endometritis remains an important problem in modern society, as it has a social significance: the frequency of reproductive losses is at a high level. There is a need to further study the features of the etiology and pathogenesis of chronic endometritis in order to improve the presentation of the course of the inflammatory process and improve the methods of therapy and prevention of this disease for the realization of reproductive function.
<span>Tổng hợp vật liệu nano spinel Li<sub>4</sub>Mn<sub>5</sub>O<sub>12</sub> bằng phương ph&aacute;p thủy nhiệt</span>
Authors: Nguyễn Minh Thảo , Phạm Minh Xuân 
Published: December 2021

Vật liệu Li4Mn5O12 được tổng hợp thành công bằng phương pháp thủy nhiệt. Điều kiện tổng hợp được xác định: tỉ lệ mol Li:Mn = 5:3, nhiệt độ 120oC, 216 giờ, thiêu kết 500oC trong 6 giờ. Vật liệu Li4Mn5O12 được phân tích thành phần, cấu trúc, hình thái bằng nhiễu xạ tia X (XRD), phổ hấp thu nguyên tử ngọn lửa (F-AAS), phổ hồng ngoại (FT-IR), phương pháp xác định carbon trong mẫu rắn (TC), hiển vi điện tử quét (SEM), hiển vi điện tử truyền qua (TEM), đặc trưng tính chất điện hóa bằng kỹ thuật quét thế vòng tuần hoàn (CV). Vật liệu Li4Mn5O12 có cấu trúc spinel (Fd3m), kích thước hạt khoảng 40-60 nm, tỉ lệ Li:Mn xác định (F-AAS) là 0,798, số oxy hóa trung bình của Mn trong sản phẩm là +3,98 ± 0,02. Vật liệu có khả năng đan cài-phóng thích thuận nghịch ion Li+ tốt.
Designs of acoustic metamaterials: From effective medium to deep learning
Authors: Wu Ying 
Published: December 2021

Acoustic metamaterials have offered great opportunities to control acoustic wave propagation as desired. The intriguing property of an acoustic metamaterial is attributed to its unique effective property. Therefore, effective medium theory, a bridge connecting the response of the medium to the incident wave and the medium’s microstructure, provides design principles of new acoustic metamaterials. Recently, the blossoming of artificial intelligence enabled another efficient way of designing acoustic metamaterials. In this talk, I will start with a review our early contributions in deriving effective medium theories followed by showcases of our recent designs of acoustic metamaterials and their properties. Finally, I will introduce our most recent work on deep learning enabled design of acoustic cloak of invisibility.
Valley-Hall topological acoustics
Authors: Zhang Zhiwang 
Published: December 2021

The discrete valley degree of freedom, i.e., quantum states of energy extrema in momentum space, is attracting growing attention because of its potential as a new type of information carrier like spins in spintronics. Transferring the valley concept to classical wave systems through valley-like frequency dispersions, has been made possible using engineered artificial lattices such as photonic and sonic crystals. In this webinar, we will start with a brief introduction on valley-projected topological acoustics and then discuss our recent works in this topic, which include the experimental realizations of the topological acoustic delay line[1], the directional acoustic antenna[2] and the valley-projected edge states based on the subwavelength soda cans[3]. Lastly, in this context, we also consider non-Hermiticity combining sonic crystals with gain[4]. Here, we take advantage of electro-thermoacoustic coupling from biased carbon nanotube films used as lattice coatings. We construct a topological whispering gallery made out of such coated lattice and show how the mode chirality can be broken and a topological “saser”, the analogous topological “laser” in acoustics, can be realized.
Acoustic Metamaterial Wizardry
Authors: Wright Oliver B. 
Published: December 2021

Acoustic metamaterials are non-naturally occurring structures consisting of arrays of sub-wavelength resonators designed to manipulate the propagation of sound, exhibiting effective negative density or modulus [1,2]. Counterintuitive metamaterial properties such as acoustic negative refraction, superlensing and cloaking have been demonstrated.
Another example is extraordinary acoustic transmission, i.e. the passage of more acoustic energy than expected through a small sub-acoustic-wavelength aperture acting as an acoustic meta-atom. This has been be demonstrated in a variety of systems, having first been shown in optics. I will first present our experimental work in this field using kHz airborne acoustics [3], in which case we find giant transmission, with enhancements up to 60, by use of an aperture closed with a membrane. I will then show how gigantic transmission enhancement, by more than a factor of 500, can be achieved in solid acoustics [4,5].
Closely related to extraordinary acoustic transmission is the phenomenon of enhanced transmission between acoustically mismatched media. I will review experimental work on the enormously enhanced passage of acoustic waves from water to air based on the use of a kHz acoustic metasurface [6].
Finally, I will present recent kHz experiments on acoustic metabeams [7] and metarods [8] with perfect bandgaps that prevent all vibrations from passing along them at certain frequencies. The era of metawands that do not vibrate is upon us.
Localisation of light in ordered time dependent systems
Authors: Pendry John 
Published: December 2021

Electromagnetic waves in periodically ordered materials are delocalised into Bloch states, just like electrons in ordered solids. Recently interest has grown in systems ordered in both space and time the simplest example of which might be a permittivity with a 1D grating,
ε(x,t)=ε_1[1+2αcos(gx-Ω t)]
We stress that this is not a moving medium but a modulation of the medium’s properties phased in time. Hence the velocity of propagation, cg = W/g can take any value -∞< cg<+∞ and is not constrained by relativity. Here too light can propagate in extended Bloch states but there is a range of values [1],
1/√(1+2α)√(ε_1)c_g / c_0 1/√(1-2α)
for which the Bloch picture fails. In this so called luminal region any incident radiation will be localised in a series of wells defined by the grating and travelling at the velocity of the grating. We present analytical solutions to this model and in particular explore the localised/delocalised transition which has an exponent of 1/2. Light incident on a grating with cgin the luminal range is compressed and amplified by a novel mechanism into a series of ever more localised pulses which emerge from the far side of the grating as shown in the figure below. For values of cg outside the luminal region a plane electromagnetic wave enters the grating as a linear combination of Bloch waves which oscillate in amplitude as they propagate. Approaching the critical velocity the oscillation period and amplitude diverge. The same exponent controls the diverging period as controls the exponential growth inside the luminal regime: a familiar result from localisation in disordered systems.
Acoustic Metamaterials with Broadband Tunable Impedance Matching
Authors: Fang Nicholas X. 
Published: December 2021

Recent development of acoustic metamaterials opens a door to an unprecedented large design space for acoustic properties such as negative bulk modulus, negative density, and refractive index. Such novel concept paves the way for the design of a new class of acoustic materials and devices with great promise for diverse applications, such as broadband noise insulation, sub-wavelength imaging and acoustic cloak from sonar detection. In this talk, I will present our research progress on advanced design and micro/nanofabrication techniques, to enable exploration and rapid prototyping of architectured metastructures for acoustic waves. These structures show promise on focusing and rerouting ultrasound through broadband metamaterials. As an example, we report a class of impedance transformers to overcome the fundamental limit of narrowband transmission. We experimentally show that the transformer device offers efficient implementation in broadband underwater ultrasound detection with the benefit of being soft and tunable. The broadband impedance matched nonreflecting acoustic metamaterial can also robustly prohibit reflection and reverberation of airborne sound waves over a wide range of incident angles. I will also discuss the acoustic labyrinthine metamaterials which can exhibit extreme constitutive parameters and an exceptional ability to control the phase of sound at deep-subwavelength scale.
EFL Teachers' Attitudes towards the Effectiveness of Metacognitive Strategies Used by High School Students
Authors: Garmabi Hanieh , Zareian Gholamreza 
Published: December 2021

In any educational program, the most influential factor affecting the students’ level of improvement is the teacher (Rama, 2011). Indeed, the teacher is assigned such an importance that his/her attitude is important for improving educational process and more influential than a teacher‘s knowledge (Xu, 2012). Hence, this study intends to examine the teachers' attitude towards the effectiveness of metacognitive strategies used by high school students. To achieve the study goals, 100 teachers who taught English at different high schools of three Cities of Iran were asked to complete 34 item thesis questionnaire which investigated the teachers' attitude toward the effectiveness of metacognitive strategy use while reading a text. The results of statistical analysis indicated that while male and female teachers have the same attitude about reading and post-reading metacognitive strategies, they have significantly different attitudes about pre-reading metacognitive strategies. The results offer implications and suggestions for the pedagogical considerations within the school and even at university contexts.
OCT and OCT-angiography parameters of intraocular blood flow in healthy adults
Authors: Volkova N. V. , Shchuko A. G. , Iureva T. N. 
Published: December 2021

PURPOSE.To identify the relationship between the parameters of choroidal and retinal blood flow by optical coherence tomography (OCT) and OCT angiography (OCT-A), and the structural, hydrodynamic and systemic hemodynamic parameters in healthy adults.METHODS.The study included 42 male subjects aged 54.43±4.1 years without signs of local or systemic pathologies. The following parameters were evaluated on the RTVue-XR tomograph (USA): structural and microcirculatory parameters of the optic disc (OD) — peripapillary retinal nerve fiber layer (pRLNF) and radial peripapillary capillary plexus (RPCP); the macula — thickness, superficial capillary plexus (SCP), deep vascular complex (DVC), foveolar avascular zone (FAZ); the choroid — thickness, structure. Blood pressure was determined using the Riva–Rocci method; tonometry — by the Maklakov method. The parameters of bidirectional corneal applanation were evaluated, and perfusion and tolerance pressure were calculated.RESULTS.Negative correlations were revealed between intraocular pressure, pRNFL and capillary density of RCP (R= −0.58… −0.73); between choroid thickness, systemic blood flow, and tolerant pressure (R= −0.56… −0.72); between the thickness of the choroid and the volume of focal losses (FLV, %), as well as the OCT-A parameters of FAZ (area, perimeter, and density of foveolar vessels) (R= −0.45… −0.58). Positive correlations were found between perifoveal thickness (including ganglion complex) with the pRNFL (R=0.58–0.71), as well as with the thickness of the choroid (R=0.41–0.65). The confidence level was p≤0.001.CONCLUSION. The relationship of retinal, choroidal, micro hemodynamics parameters by OCT (choroid thickness) and OCT-A (RCC) (HD Angio Disc 4.5 protocol); area, perimeter, and vascular density of FAZ (Angio Retina 3.0 protocol) with the parameters of systemic blood flow in healthy subjects can likely be considered as hemodynamic biomarkers in the diagnosis, monitoring, and evaluation of treatment effectiveness of any intraocular vascular process (including glaucoma).
The profile of patients with primary open-angle glaucoma in the Russian Federation (preliminary results of a multicenter population-based study). Part 2
Authors: Kuroyedov A. V. , Movsisyan A. B. , Egorov E.  A. , Erichev  V. P. , Gorodnichy  V.  V. , Brezhnev A. Yu. , Gazizova I. R. 
Published: December 2021

PURPOSE. To determine individual clinical and epidemiological characteristics of the disease in patients with primary openangle glaucoma (POAG) and to establish its relationship with adherence to treatment.METHODS. The analytical, multicenter, combined study involved 1 092 subjects (2 184 eyes) with different forms of glaucoma (general group) were selected using a survey, followed by their clinical and epidemiological analysis.RESULTS. When verifying the diagnosis, eyes with POAG prevailed in the main group (from 89.6 to 92% of all eyes). The average age in the main group at the final examination was 66 (63; 69) years, the duration of the disease was on average 3 years. The number of eyes with the initial stage of glaucoma decreased in 3 years by 17.5-19.1%, and the number of eyes with advanced and severe stages of the disease increased by 10.4-12.9% and 5.1-5.2%, respectively. The hypotensive regimen was changed at the average tonometric intraocular pressure of 24 (23; 26) mm Hg (regardless of the disease stage). When estimating the comorbidity of the main group, the most common concomitant somatic pathology was hypertension. Today, prostaglandin analogues are prescribed in 34.6-36.3% of all cases for all stages of glaucoma. The leading complaint of patients according to the survey was the cost of treatment. In addition, the influence of the organization's pharmacist on the choice of the purchased drug was revealed. However, attending physician remains the main source of information about the disease for patients (92.2%).CONCLUSION. It was found that POAG predictably prevails in Russia, and its diagnosis still comes with a delay. The causes of treatment failures should be recognized as late diagnosis, incorrect treatment of patients with newly diagnosed condition, and the same treatment regimens for paired eyes with different stages of POAG, as well as social and behavioral factors of patient compliance.
Neuritis of the optic nerve
Authors: Gafarov I. Z. 
Published: December 2021

At present, the problem of treating optic neuritis is becoming increasingly relevant due to growing incidence of this pathology among the young, significantly affecting their quality of life. High rate of disability outcomes (28%) connected with the development of optic nerve atrophy leading to irreversible changes in the visual functions accounts for high social value of this disease.The development of optic neuritis is known to happen very quickly in some cases, and in this regard all the performed methods of treatment should be urgent, aimed at increasing the treatment efficiency and preventing the irreversible complications due to the late and sometimes incorrect diagnosis.There are currently no reasonably effective treatments of optic nerve neuritis because generally, the therapy is etiopathogenesis-targeted, depending on the revealed cause of the disease, which in practice can rarely be established.The article reviews various methods of conservative and surgical treatment of optic neuritis and describes our experience of employing a drainage surgery technique with the use of allogeneic spongy biomaterial commonly used for complicated glaucoma.
Comparative analysis and evaluation of current antidiarrheal prescribing trends with representative brand in pediatric population of Pakistan
Authors: Malik Maimoona , Khattak Shahana , Naureen Humaira , Azhar Farah , Ahsan Hina , Mansoor Fariha , Shahid Aniqa 
Published: December 2021

Background: Prevalence of carpal tunnel syndrome (CTS) among pregnant women is very much common among the Background: Inappropriate management of diarrhea is the main cause of morbidity and mortality in the pediatric population worldwide, more especially in developing countries including Pakistan.
Method: The sample size was calculated using World Health Organization (WHO) and Expanded Program on Immunization (EPI) info calculator. 240 prescriptions were collected from eight hospitals including four public hospitals (Pakistan Institute of Medical Sciences, Polyclinic Hospital, Holy family Hospital and Benazir Hospital) and four private hospitals (Hearts International Hospital, Maroof Hospital, Railway hospital, Bilal Hospital) of twin cities of Pakistan (Islamabad and Rawalpindi). Objectives: The purpose of this study was to analyze current prescribing trends of diarrheal management followed by comparative pharmaceutical evaluation of representative brands Parameters recorded from prescriptions were demographics (age and gender), presenting complaints and medications prescribed. Prescriptions were evaluated by their comparison with standard treatment guidelines. Results: Data were evaluated using a statistical package for social sciences (SPSS version 16.0) for descriptive statistics and cross-tabulations along with Chi square test. Diarrhea was presenting complaint in 106 (44%) of peads among age group 0-2 years. Out of 106 (44%) cases of diarrhea, 52 (20%) cases have prescribed an antibiotic in combination with other medications, which was not indicated according to standard guidelines. The use of oral rehydration solutions (ORS) was also limited. Zinc supplementation with ORS is indicated treatment for diarrhea and was prescribed to 21 (9%) cases. Conclusion: Hence, it has been concluded that standard treatment guidelines were not followed thoroughly which leads to increased morbidity, complications and cost.
PENDAMPINGAN MASYARAKAT PESISIR DESA MULADIMENG DALAM PENANAMAN POHON MANGROVE SEBAGAI BENTUK KEPEDULIAN LINGKUNGAN SERTA UPAYA MENUNJANG EKONOMI MASYARAKAT
Authors: Nurasia Nurasia , Aminuddin Ahyar , Hidayanti Nurul 
Published: December 2021

Ekosistem mangrove merupakan ekosistem interface antara ekosistem daratan dengan ekosistem lautan. Oleh karena itu, ekosistem ini mempunyai fungsi spesifik yang keberkelangsungannya bergantung pada dinamika yang terjadi di ekosistem daratan dan lautan. Keberadan hutan mangrove sangat menentukan dan menunjang tingkat perkembangan sosial dan perekonomian masyarakat pesisir pantai, di Desa Muladimeng yang merupakan daerah pesisir pantai tentunya ekosistem mangrove sangat berpengaruh bagi kegiatan yang ada di sana karena selain sektor pertanian sektor perikanan dan kelautan di desa Muladimeng merupakan sumber penghasilan terbesar bagi masyarakat, maka dari itu kegiatan ini dilakukan sebagai upaya untuk memberikan edukasi serta melakukan konservasi diwilayah yang mengalami tingkat kerusakan mangrove yang tergolong parah. Persepsi dan sikap masyarakat terhadap konservasi mangrove sangat menentukan keberhasilan kegiatan konservasi mangrove. Kegiatan ini bertujuan untuk memberikan edukasi kepada masyarakat tentang pentingnya ekosistem mangrove bagi daerah pesisir.
PENDAMPINGAN MANAJEMEN USAHA DAN PEMASARAN PRODUK PENGRAJIN PANDAI BESI DI DESA PAMBOBORANG KECAMATAN BANGGAE KABUPATEN MAJENE PROVINSI SULAWESI BARAT
Authors: Dj Arifhan Ady , Adha Wahyu Maulid , Dj Akhdiari Harpa 
Published: December 2021

Desa Pamboborang Kecamaatan Banggae Kabupaten Majene terkenal dengan usaha-usaha ekonomi produktif. Salah satu usaha ekonomi produktif yang menonjol di desa ini adalah usaha “Kappung Kowiq” (kampung pandai besi) karena sejak zaman dahulu sampai sekarang di kampung ini mayoritas masyarakatnya merupakan pandai besi. Dalam menjalankan usahanya, Kelompok Usaha Bersama (KUB) Pandai Besi Indo Banua menghadapi berbagai masalah di antaranya adalah proses produksi di kerjakan dengan menggunakan alat-alat yang sangat sederhana sebagai teknologinya. Tata kelola sistem manajemen usaha termasuk di dalamnya aspek-aspek manajemen usaha yang meliputi perencanaan usaha, pengorganisasian, implementasi, pengelolaan manajemen keuangan yang masih dikelola secara sederhana, bauran pemasaran dalam memasarkan produk masih menggunakan cara pemasaran dari mulut ke mulut. Oleh karena Pengabdian kepada masyarakat ini bertujuan meningkatkan pemahaman dan pengetahuan mitra tentang aspek-aspek manajemen usaha yang meliputi perencanaan usaha, pengorganisasian, implementasi, manajemen keuangan serta pemahaman kelompok tentang strategi pemasaran. Pendekatan pemberdayaan yang dilakukan untuk mecapai tujuan adalah melalui tahap persiapan, assesment, Perencanaan dan alternatif kegiatan, Formulasi/rencana aksi, pelaksanaan kegiatan pelatihan, dan evaluasi.
GERAKAN LITERASI DIGITAL: PELATIHAN AKSES INTERNET DAN KOMPUTER BAGI GURU DI KABUPATEN KARAWANG
Authors: Riady Yasir 
Published: December 2021

Gerakan literasi digital ditujukan untuk menghasilkan perubahan tingkah laku, terlebih profesi guru. Seorang guru harus memiliki kompetensi dalam bidangnya yang meliputi Kompetensi Pedagogik, Kompetensi Kepribadian, Kompetensi Profesional dan Kompetensi Sosial. Kompetensi profesional merupakan kemampuan penguasaan materi pembelajaran secara mendalam dan memiliki berbagai keahlian di bidang pendidikan terlebih teknologi dan informasi khususnya selama pandemi. Keahlian tersebut meliputi penguasaan materi, memahami perkembangan internet, pengelolaan kelas digital, penggunaan strategi, literasi informasi, akses internet, komputer dan lain-lain. Literasi informasi merupakan salah satu kemampuan yang sangat penting dimiliki oleh seseorang terutama dalam persaingan global saat ini. Perkembangan informasi yang sangat cepat membuat kebutuhan akan literasi informasi sangat tinggi dan diperlukan. Program pelatihan ini menjadi salah satu bentuk yang bertujuan untuk membantu meningkatkan kualitas guru. Tulisan ini mengulas kegiatan pelatihan literasi komputer yang dilaksanakan untuk guru-guru SD di wilayah Kabupaten Karawang.