bluuebunny/crossref_metadata_2025 huggingface dataset:
Sedacja w stomatologii – aktualne wytyczne anestezjologiczne
Authors: Świątkowska Agnieszka , Świątkowska-Bury Magdalena
Published: August 2021

Introduction. Dental treatment remains a constant concern of children as well as adult patients. Adequate choice of sedation enables dentists to safely carry out medical procedures. Aim. To review current literature concerning anesthetic guidelines for sedation in a dental office. Material and methods. Articles from 3 databases were analyzed: PubMed/Medline, EMBASE and Cochrane Library, for current guidelines on sedation in dentistry. Results. The most current guidelines show that sedation can be applied to any patient in the event in which anxiety or pain prevents practitioners from safely performing medical procedures. In order for the patient to be qualified for treatment under sedation, he must undergo thorough health assessment and physical examination as well as evolution of the possibility of performing the procedure using minimal, moderate or deep sedation. The most common form of sedation applied in dentistry is oral or inhalation minimal sedation, which does not require the presence of an anesthesiologist during the procedure. Patients suffering from severe odontophobia can be successfully sedated with the use of intravenous drug infusions. However, such procedure requires assistance of a trained Anesthesia Care team specialized in life support. Conclusions. Current guidelines enable treating patients with various health conditions and with fear of dental treatment, using varying degrees of sedation. Thanks to trained medical personnel, the application of specific, procedures and an appropriately equipped dental office, sedation of adults as well as children is safe.
The Effect Ricker Wavelet of Duty Cycle Adjustment on GPR Detection Result
Authors: Ramadhan Aditya Rifky , Ali Erfansyah , Pramudita A.A.
Published: August 2021

Ground Penetrating Radar (GPR) employs an ultra-wideband (UWB) signal for detecting objects under the ground surface. In a certain GPR application, a proper UWB signal is needed to obtain a good detection result. Ricker wavelet is one type of UWB signal that can be used in GPR operation. The effect of adjusting the Ricker wavelet duty cycle on the B-scan result was investigated and the result is discussed in this paper. Laboratory experiments were performed by modelling the GPR system using Vector Network Analyzer (VNA). The result shows that selecting a Ricker wavelet’s duty cycle is successful to show the target clearly.
Performative Strategies in Contemporary Chinese Avant-garde Poetry
Authors: Dreyzis Yulia A.
Published: August 2021

The paper presents an attempt to explore the problem of mediality in Chinese poetry of the last thirty years. New Chinese poetry is particularly susceptible to the influence of the latest concepts of modern art and now more than ever needs a clear contextualization in relation to other forms of culture and avant-garde practice. This can be achieved through applying an analysis paradigm for performative word art developed by Dr. Tomáš Glanc in the context of Czech and Russian neo-avant-garde. It perceives experimental poetry as a form that fulfills a shift of the word thus making it labile. Examples of this phenomena can be found in Chinese poetry in the works of Ouyang Jianghe, Yang Xiaobin, Ouyang Yu, Xia Yu, Chen Li, Xu Bing, Wuqing and many more experimental artists. Their creative use of word shift principles shows how performative strategies are adapted in contemporary Chinese poetry keeping in mind the specific hanzi (character) medium that it is based upon. It seems both a continuation of a long-existing tradition and a radical exploration of the ‘iconic turn’ in the field of language.
“New Literacy” and “New Wave” of Language Policy in Japan
Authors: Frolova Evgenia L.
Published: August 2021

The concept of literacy has undergone changes from the simple possession of writing and reading skills to functional literacy, which includes many aspects (informational, financial, etc.). All together, this can be called the concept of “new literacy”, or the “concept of competencies”. In Japan, modern Japanese writing presents a significant problem, combining several writing scripts. The basis of functional literacy is the ability to use approximately 2,000 characters. However, the discriminated sections of the population, ethnic minorities, people with disabilities, foreigners and “new migrants” do not reach the required level of literacy. Under these conditions, a “new literacy” strategy has emerged that offers to recognize that there are different levels of literacy. The concept of “Plain Japanese Language” was created as a means of access to information and socialization for all segments of the population of Japan. People with disabilities need to be provided opportunities for basic access to information and participation in public life. The theory of alternative literacy also sets a certain bar, only lowers it much lower, covering practically all segments of the Japanese population. Japanese writing acts as a cultural tool for the daily life of the Japanese. Mastering all aspects of functional literacy is a difficult and inevitable burden for young people in Japan. From this perspective, literacy in Japan is a cultural resource that can lead to social exclusion and discrimination. Considering literacy in the context of publicly available information, changing the existing paradigm of “violence by literacy,” is a new and welcome approach. There is an increase in academic interest in socially-driven diverse language communities in Japan and beyond. This led to changes in the language policy of Japan, called the “New Wave”.
Images of Dogs in Chinese Rock Art
Authors: Kudinova Maria A.
Published: August 2021

The paper analyzes images of dogs in rock art of China. According to the semantics of compositions the following groups can be distinguished: hunting dogs, herding dogs, guard dogs, using of dogs in rituals, mythological and folklore motifs and other images. According to the distribution of different thematic groups of images, two big areas – northern and south-western – can be seen. In northern regions of China (Xinjiang Uyghur Autonomous Region, Inner Mongolia Autonomous Region, Ningxia Hui Autonomous Region, Gansu Province) the scenes of practical use of dogs (hunting, grazing, guarding herds and dwellings) prevail, which can be explained by the characteristics of the economic structure of the nomadic peoples who inhabited these territories. The images of a horseman followed by a dog and a bird of prey seen in Xinjiang and Inner Mongolia can be interpreted as depictions of some motifs of heroic epos of Central Asian nomadic peoples. Other compositions in northern regions have been found to depict not only “realistic”, but “mytho-ritual” interpretations as well. In south-western regions (Guangxi Zhuang Autonomous Region, Yunnan Province, Sichuan Province) the images of dogs in ritual and/or a mythological context are more common. It is likely connected with the less practical importance of dogs in the agricultural economy and the higher status of this animal in the spiritual culture of the peoples of Southern China. Rock paintings in Cangyuan County, Yunnan Province, is an exception that combines the images belonging to both traditions, namely a picture of a hunting dog and a dog as a sacrificial animal. Some images cannot yet be deciphered unequivocally.
An Ancient Egyptian Spell in the Tomb of Neha at el-Qatta
Authors: Demidchik Arkady E.
Published: August 2021

A translation and commentary on the spell in the tomb of Neha at el-Qatta previously discussed by H. D. Schneider (1977) and T. J. Allen (2013). The spell was believed to provide Neha, after his death, with magical powers over representations (possibly statuettes) of his “workers-kAwtyw” designed to serve him in the next world. However, as an indispensable condition for the effectiveness of the spell was considered to be the faultlessness of the acquisition of the representations, the latter was asserted in passages resembling an ideal autobiography. The expression mr(y)t(=f) Ds=f “his own household people” in l. 22 is the Middle Kingdom colloquial equivalent of the mr(y)t=f n(y)t Dt=f, which has survived in nomarch Nehery’s tomb at el-Bersheh and on the pedestal of a sculptural group of four figurines from the mastaba of Shepi at Dahshur (CG 512). The latter parallel is of special significance, since in the selection and arrangement of other spells Neha’s burial chamber is also comparable to certain tombs in the Dahshur–Lisht region. Neha was most likely influenced by one of the magical traditions of this metropolitan area. If Neha, like Shepi, had a sculptural group of four “household people”, this could explain his words about acquiring “the fourth one (fdnw)” to serve very early and late extra meals (ll. 23 ̶ 24). The noun nDs in l. 17 and the use of the word Ds with the meaning “own” in connection with people date the composition to no later than the reign of Senusret I.
An Analysis of the “Reading the Verses of Chu” Article by Hu Shi
Authors: Kravtsova Marina E. , Terekhov Anton E.
Published: August 2021

The paper presents an attempt to analyze Hu Shi's “Reading the Verses of Chu” which is considered one of the basic theoretic works for the “discussion on rejecting the historicity of Qu Yuan”. It spread in the first decades following the formation of the Republic of China (1911–1945) and gave birth to the to the estimation that the famous chuci (verses of Chu) poetic tradition, was firmly considered in the course of the previous centuries to be originated by the creative activities of Qu Yuan (4th – 3rd century BC), a stateman of the ancient Chinese Chu Kingdom (11th – 3rd century BC), derived in fact from an ancient anonymous cantos. It is widely considered nowadays that it was precisely Hu Shi who first stated the fictionality of Qu Yuan. However, close reading of the work shows that its content is not limited to discussing this issue. Recognizing the possibility of the existence of such a Chu poet and his authorship of a number of poetic pieces attributed to him, Hu Shi called for the abandonment of the formulaic interpretations of Qu Yuan’s image and the chuci poetry, which arouse on the basis of further legends about Chu and being under the influence of Confucian views on literary activities and personally on Qu Yuan. Thus, Hu Shi outlined a fundamentally new methodological approach to the study of the verses of Chu, which was based on examining the texts as well as their historical and cultural context. This is his true theoretical contribution to the Chinese humanities of the 20th century.
Analysis of Arabic Language Textbooks for Madrasah Aliyah Class XI Based on the 2013 Curriculum | Analisis Buku Ajar Bahasa Arab Madrasah Aliyah Kelas XI Berdasarkan Kurikulum 2013
Authors: Faoziyah Laila , Izzah Nailul
Published: August 2021

The issue raised in this research is about the material content of the Arabic language textbook Madarasah Aliyah Class XI published by the Ministry of Religion. This study aims to analyze the Arabic language textbooks for Madrasah Aliyah Class XI based on the 2013 curriculum. This research is a qualitative research with a literature study method. Data collection is done by documentation technique and data analysis that the writer uses is content analysis. While the 2013 Curriculum is a theory that is used as a medium to analyze qira'ah about Amal al-Murahiqin. The results of the study indicate that the Islamic Madarasah Aliyah Class XI Arabic Textbook published by the Ministry of Religion is in accordance with the 2013 curriculum. This can be seen from the material and pictures contained in it are in accordance with core competencies and basic competencies. In addition, the qira'ah material on Amal al-Murahiqin has included the values ​​of spiritual attitudes, social attitudes, knowledge, and skills taught in learning.
Síndrome da hipoventilação central congênita: estudo de caso
Authors: Galego Patrícia Marina , Galego Débora Renata , Prette Iasmin Barufaldi , Albuquerque Regina Célia Ajej Pires de , Galego Andressa Regina , Anno Patricia de BArros Viegas
Published: August 2021

Objetivo: Descrever caso de Síndrome da Hipoventilação Central Congênita (SHCC) em lactente. Detalhamento de caso:  Lactente de 1 mês e 20 dias admitido em unidade de emergência com relato de cianose perioral e de extremidades desencadeada por choro e tosse presentes desde o nascimento e piora progressiva nos 7 dias antecedentes à admissão no serviço. Descartadas etiologias infecciosa, pulmonar, cardíaca, malformações de sistema nervoso central, erros inatos do metabolismo, distúrbios hidroeletrolíticos e neuromusculares. Apesar de sedação contínua e ventilação mecânica otimizada, apresentou episódios frequentes de queda da saturação de oxigênio (StO2) de e bradicardia, principalmente quando manipulado. As gasometrias arteriais de controle indicaram aumento importante da pressão parcial de gás carbônico, atingindo até 130, com padrão mantido, mesmo com StO2 normal e de FIO2 próxima a 100%. A hipótese diagnóstica de hipoventilação central congênita foi confirmada por meio da identificação GENE PHOX2B em HETEROZIGOSE (1 cópia), variante patogênica da doença. Considerações finais: O diagnóstico precoce e as melhorias na ventilação domiciliar, acompanhados do aperfeiçoamento dos métodos de monitoramento cardiorrespiratório e de ventilação artificial, têm permitido aos pacientes atingir a idade adulta com qualidade de vida satisfatória. Os avanços tecnológicos da engenharia biomédica prometem aos pacientes maior independência e autonomia.
Penggunaan Biografi Sultan Syarif Abdurrahman Alkadrie Sebagai Sumber Pembelajaran Sejarah
Authors: Firmansyah Haris , Noor Agus Sastrawan , Chalimi Ika Rahmatika
Published: August 2021

Pembelajaran sejarah harus menghadirkan lingkungan sekitar sebagai sumber belajar kepada peserta didiknya agar pembelajaran lebih bermakna karena masih sering dijumpai peserta didik banyak belum mengenal sejarah lokalnya sendiri, dalam hal ini guru dapat menjadikan biografi tokoh yang berpengaruh di kota Pontianak yakni Sultan Syarif Abdurrahman sebagai sumber pembelajaran sejarahnya. Penelitian ini bertujuan untuk mendeskripsikan biografi Sultan Syarif Abdurrahman serta mengatahui bagimana penggunaan biografi tersebutdalam pembelajaran sejarah. Penelitian ini merupakan penelitian dasarÂ  dengan menggunakan bentuk deskriptif-kualitatif. Teknik pengupulan data yang digunakan antara lain: Observasi langsung, Wawancara mendalamÂ  serta Mengkaji dokumen dan arsip. Penelitian ini dilaksanakan pada semester ganjil tahun ajaran 2020-2021 di tiga sekolah yakni SMA Negeri 5, SMA Negeri 6 dan SMA Negeri 9 Pontianak dengan teknik analisis interaktif. Adapun hasil penelitian ini adalah (1) Perjalanan panjang telah digoreskan oleh Sultan Syarif Abdurrahman. Mulai dari pendirian kota Pontianak hingga perkembangan yang terjadi di kerajaan Pontianak pada masa pemerintahannya. Sultan yang sangat religius, bijaksana dan tegas pun tergambarkan dari cerita-cerita dalam buku-buku sejarah berdirinya kota Pontianak. (2) Memanfaatkan biografi Sultan Syarif Abdurrahman menjadi sumber belajar untuk memberikan variasi dalam pembelajaran sejarah kepada peserta didik. Dalam Pemanfaatan biografi Sultan Syarif ini dilaksankan dengan melakukan wisata sejarah ke tiga lokasi yang berkaitan dengan Sultan Syarif Abdurrahman yakni Masjid Jamiâ€™, Istana Kadriah dan Komplek Pemakan Sultan Di Batu Layang. Implikasi penelitian ini bahwa pengembangan materi sejarah lokal dapat digunakan oleh guru sejarah hampir pada setiap materi sejarah yang terdapat di kurikulum.
Clinical analysis and efficacy of bimanual surgical treatment of retinal detachment in severe forms of proliferative diabetic retinopathy with preoperative preparation with anti-VEGF drugs in combination with the use of the Ngenuity ALCON 3D imaging system
Authors:   The S. Fyodorov Eye Microsurgery Federal State Institution, Novosibirsk Branch, Novosibirsk, Chernykh D.V.
Published: August 2021

The purpose of the study was to evaluate the effectiveness of bimanual surgery with anti-VEGF preparation of patients with severe forms of PDR complicated by traction retinal detachment, with intraoperative use of 3D visualization. Material and methods. Operated on 18 patients with a diagnosis of PDR complicated by traction retinal detachment. Of these, there were 7 patients with type 1 diabetes, type 2 diabetes. There were 5 men and 13 women. The average age was 58 + -2 years. All patients underwent a three-port vitrectomy, using an additional light source, with preoperative preparation with anti-VEGF drugs, using bimanual technique and 3D visualization, using air tamponade. Results and its discussion. As a result of the study, it was found that the visual acuity before the treatment was 0.03 [0.01; 0.1], and 4-6 months after the surgical treatment, 0.3 [0.15; 0.5]. The performed statistical analysis made it possible to establish a statistically significant increase in visual acuity 4-6 months after the treatment. (p = 0.001) Achieved complete anatomical retinal fit. With increased visual acuity. There were 5 complications in the postoperative period. Recurrent hemophthalmos was diagnosed in 3 people, which required repeated surgical intervention. In 2 patients in the postoperative period, DMO developed, which required IVI biodegradable dexamethasone implant. Conclusion. Bimanual, surgical treatment of traction retinal detachments, in severe forms of PDLP, with preoperative preparation with anti-VEGF drugs, and the use of the Ngenuity ALCON 3D imaging system, is one of the effective methods of treatment in this group of patients, and is aimed at reducing both intra and postoperative complications. Key words: рroliferative diabetic retinopathy, vitrectomy, 3D imaging, bimanual surgery, anti-VEGF drugs.
Assessment of the clinical effectiveness of idiopathic macular ruptures surgical treatment of a large and medium diameter using modified inverted flap technology of internal limiting membrane (preliminary results)
Authors:   Irkutsk Branch of S.N. Fyodorov Eye Microsurgery Federal State Institution, Ministry of health of the Russian Federation, Bronskiy D.I. , Zaika V.A. ,   Irkutsk Branch of S.N. Fyodorov Eye Microsurgery Federal State Institution, Ministry of health of the Russian Federation, Yakimov A.P. ,   Irkutsk Branch of S.N. Fyodorov Eye Microsurgery Federal State Institution, Ministry of health of the Russian Federation,   Irkutsk State Medical Academy of Postgraduate Education – Branch Campus of the Russian Medical Academy of Continuing Professional Education
Published: August 2021

Purpose. To assess the clinical effectiveness of surgical treatment of medium-and large-diameter idiopathic macular ruptures (IMR) using a modified technology by inversion and fixation of a free flap of the internal limiting membrane (ILM). Methods. A prospective study was conducted in 11 patients (11 eyes), 9 women and 2 men with medium-and large-diameter IMR. Mean age - 67.3 ± 5.38 (55-80) years. Patients with penetrating IMR of 2-4 stages according to the J. Gass classification. All patients underwent optical coherence tomography (OCT) along with traditional ophthalmological methods. The scans were performed in Retina Map, Cross line, Radial line, and Angio Retina modes. The obtained images were used to measure the parameters of the macular rupture (MR) of the retina manually. All patients underwent surgical treatment of IMR according to the proposed method. Results. In all cases, 1 day after the surgery, the closure of the gap was achieved according to ophthalmoscopy. 1 month after the surgery, according to OCT, 3 patients (27.2%) had a defect in the photoreceptor layer, 4 patients (36.3%) had deformity or peripheral non-attachment of the edges of the ILM flap, and 2 patients (18.1%) had a combination of these defects. According to OCT data in the Angio Retina mode, changes in the parameters of retinal blood flow were noted: there was a significant, moderate expansion of the avascular zone, accompanied by a moderate decrease in retinal perfusion. Despite this, there was a significant increase in visual acuity in the postoperative period. Conclusion. Endovitreal intervention for medium-and large-diameter macular ruptures using a modified technology by inversion and fixation of an ILM free flap is highly effective, as well as a low-traumatic treatment method that allows achieving anatomical closure of the macular defect and improving visual functions.
Comparison of the effectiveness of micropulse laser treatment in central serous chorioretinopathy and complicated forms of dome-shaped macula
Authors:   S. Fyodorov ", Melikhova M.V. ,   Eye Microsurgery",   Federal State Institution, Saint-Petersburg brunch, Gatsu M.V. ,   S. Fyodorov "Eye Microsurgery" Federal State Institution, Saint-Petersburg brunch,   State budget institution of higher education "North-Western State Medical University named after I.I Mechnikov" under the Ministry of Public Health of the Russian Federation, Saint-Petersburg
Published: August 2021

The purpose of the study was to evaluate the effectiveness of micropulse subthreshold laser coagulation (SML) in patients with complicated form of sclerogenic macular degeneration (SMD), acute and chronic central serous chorioretinopathy (CSR). Material and methods. SML was performed in 3 groups of patients. Group 1 – 15 patients with SMD from 28 to 63 years old, median age 55.0 (40; 62) years. Group 2 with acute CSR – 16 patients from 21 to 51 years old, median age – 37.0 (32; 42.5) years. Group 3 of patients with chronic CSR consisted of 15 people from 26 to 56 years old, the median age was 43.0 (40; 51). In group 1, women prevailed (93%), in groups 2 and 3 – men (94% and 80%, respectively). SML was performed with a diode laser (810 nm) in a subthreshold mode, a 10% microimpulse was used, 2-3 sessions were performed with an interval of 2-4 months. The observation period was 6-12 months. The criterion of efficiency was the complete disappearance of the liquid. Results. In group 1 of patients, serous retinal detachment (SRD) completely adhered in 7 out of 15 people (46.7%), there were no relapses during the year of follow-up. In group 2, the treatment effect was achieved in 11 out of 16 people (68.8%), 3 relapses of SRD. In group 3 with chronic CSR, complete regression of SRD was achieved in 10 out of 15 people (66.7%) with 1 recurrence of SRD. Significant dynamics of BCVA and retinal thickness in the central zone were observed only in the group with acute CSR. Conclusions. SML accelerates the resorption of subretinal fluid as efficiently as possible in patients with acute CSR. In the other two groups, this method of treatment cannot be considered completely satisfactory due to the very slow rate of regression of SRD and the absence of a significant effect on visual acuity. Key words: central serous chorioretinopathy, dome-shaped macula, sclerogenic macular degeneration, subthreshold laser micropulse coagulation.
Objective intraoperative assessment of vitreous f loaters localization in YAG-laser vitreolysis
Authors:   The S. Fyodorov Eye Microsurgery Federal State Institution, Normaev B.A. , Doga A.V. ,   The S. Fyodorov Eye Microsurgery Federal State Institution, Buryakov D.A. ,   The S. Fyodorov Eye Microsurgery Federal State Institution
Published: August 2021

Purpose. To develop an optical method for assessing the localization of vitreous floaters in the vitreous cavity and to evaluate its efficacy compared to ultrasound assessment. Material and methods. The study included 35 patients (35 eyes) with Weiss ring. All the patients underwent echobiometry, as well as measurement of the distance from the vitreous floaters (VF) to the lens posterior capsule or towards retina by ultrasound and developed optical methods. Results. The mathematical modeling and the diopter difference between the slit-lamp oculars were used to develop a formula for the safe position of the VF in the vitreous cavity calculation. A comparative analysis of ultrasound and optical methods measurement results have showed their comparability. The values of the "limits of agreement" with 95% confidence intervals were: -0.02 [-0.07; 0.01] - the lower "consistency limit" and 0.25 [0.20; 0.29] - the upper "consistency limit". The average difference between methods with a 95% confidence interval was 0.11 [0.08; 0.13]. Conclusions. The developed optical method for assessing the safe localization of VF in the vitreous cavity showed comparable results with the ultrasound measurements. Futhermore, optical method allows to intraoperatively control the safe distance from the VF to the intraocular structures, thereby reducing the risk of YAG-vitreolysis complications. Key word: YAG laser vitreolysis, vitreous floaters, safe distance of vitreous floaters.
Optimized approach to surgical treatment of proliferative diabetic retinopathy in patients with permanent hemodialysis
Authors:   Leningrad Regional Hospital, Saint-Petersburg, Golovin A.S. , Sinyavskiy O.A. ,   Leningrad Regional Hospital, Saint-Petersburg, Troyanovsky R.L. ,   Leningrad Regional Hospital, Saint-Petersburg,   Military medical Academy, Saint-Petersburg
Published: August 2021

Purpose. Optimization and identification of key conditions for successful surgical treatment of PDR in patients with permanent hemodialysis. Material and methods. The results of surgical treatment of 8 patients (10 eyes) with PDR who received permanent hemodialysis were analyzed. All patients underwent surgery 18-20 hours after the hemodialysis session. 25G vitrectomy with phacoemulsification 1-5 days after intravitreal injection inhibitor of anti-VEGF. Results. In 9 cases, an improvement in visual functions was achieved. Visual acuity of 0.08-0.1 in 5 cases, 0.1-0.2 in 3 cases and 0.3 in one case on a single eye. Conclusions. The described stereotype is the optimal approach for the surgical treatment of PDR in patients with permanent hemodialysis. Key words: proliferative diabetic retinopathy, hemodialysis, vitrectomy.
Optical neuropathy and edematous exophthalmos. New approaches to treatment
Authors:   The S .Fyodorov Eye Microsurgery Federal State Institution, Novosibirsk Branch. Novosibirsk, Bratko G.V. , Dmitriev D.D. ,   The S .Fyodorov Eye Microsurgery Federal State Institution, Novosibirsk Branch. Novosibirsk, Bratko V.I. ,   The S .Fyodorov Eye Microsurgery Federal State Institution, Novosibirsk Branch. Novosibirsk, Trunov A.N. ,   The S .Fyodorov Eye Microsurgery Federal State Institution, Novosibirsk Branch. Novosibirsk, Chernykh V.V. ,   The S .Fyodorov Eye Microsurgery Federal State Institution, Novosibirsk Branch. Novosibirsk
Published: August 2021

Purpose. To study the clinical effectiveness of the administration of complex therapy of drugs to the hemolymphocirculatory organ (pterygopalatine fossa) in edematous exophthalmos in patients with endocrine ophthalmopathy complicated by optical neuropathy. Material and methods. The analysis of the results of treatment of 31 patients (62 eyes) with edematous exophthalmos on the background of endocrine ophthalmopathy complicated by optical neuropathy, who applied for help in the Novosibirsk branch of "MNTC "Eye Microsurgery". All patients were prescribed a 10-day course of intensive complex treatment, consisting of injections into the region of hemolymphocirculation (pterygeal fossa) No. 6 (No. 3 on each side) with an interval of 24 hours of a drug mixture, the formulation of which included Lidocaine 20 mg, Dexazone 4 mg, Hemase 3000 units, Dalargin 1 mg, with additional administration of antioxidants, neuroprotectors, vitamins and keratoprotectors. Results. By the end of treatment, all patients had a pronounced positive trend in the form of a significant (from 0.6 to 1.0) increase in visual acuity, a decrease in exophthalmos (from 2,0 to 3,0 mm), and an increase in color and contrast sensitivity. Conclusions. Due to the violation of venous and lymphatic outflow due to the thickening of extraocular muscles and retrobulbar fiber, injection of drugs with a wide range of decongestant and metabolic effects into the hemolymphocirculation region (pterygeal fossa) is justified and effective. Key words: endocrine ophthalmopathy, optical neuropathy, complex therapy.
Analysis of results of inverted internal limiting membrane flap technique using 3D visualization for surgical treatment of macular holes
Authors:   The S. Fyodorov Eye Microsurgery Federal State Institution, the Khabarovsk Branch, Khabarovsk, Russian Federation, Egorov A.V. , Kolenko O.V. ,   The S. Fyodorov Eye Microsurgery Federal State Institution, the Khabarovsk Branch, Khabarovsk, Russian Federation,   Postgraduate Institute for Public Health Workers, Khabarovsk, Russian Federation, Khudyakov A.Y. ,   The S. Fyodorov Eye Microsurgery Federal State Institution, the Khabarovsk Branch, Khabarovsk, Russian Federation, Egorov V.V. ,   The S. Fyodorov Eye Microsurgery Federal State Institution, the Khabarovsk Branch, Khabarovsk, Russian Federation,   Postgraduate Institute for Public Health Workers, Khabarovsk, Russian Federation
Published: August 2021

Purpose. Analysis of results of inverted internal limiting membrane (ILM) flap technique using 3D visualization for surgical treatment of macular holes (MH). Material and methods. 21 people with stage 3 or 4 MH. Visometry and optical coherence tomography (OCT) were performed before surgery, on the 3rd day and 1 month after surgery. All patients underwent a three-port 27G vitrectomy with using NGENUITY 3D visualization system (Alcon, USA). After vitrectomy and ILM staining, the ILM flap was formed in the form of single monoblock with wide base, which was turned over and placed on the MH area. The operation was completed by fluid/air exchange. Results. MH closure on the 3rd day after surgery was observed in 19 (90.5%) of 21 patients. In 2 patients, MH closure was absent; in these cases, a second operation was performed with silicone oil tamponade. One month after the operation, according to OCT datas, complete MH closure was noted in all patients. The average value of the best corrected visual acuity by this observation period was 0.3, which was 6 times higher than the initial (0.05) visual acuity. The use of 3D visualization system allowed us to reduce the level of endoillumination by up to 15% and to reduce the exposure time of the endovitreal dye to 15 seconds to reduce the risks of retinal phototoxicity. Conclusion. The proposed inverted ILM flap technique made it possible to achieve MH closure in 90.5% of cases. The experience of using NGENUITY 3D visualization system has shown high efficiency and safety by reducing the risk of iatrogenic phototoxicity. Key words: macular hole, inverted flap, internal limiting membrane, 3D visualization, NGENUITY.
Differential approach to the treatment of macular hemorrhages in valsalva retinopathy
Authors:   S.N. Fedorov NMRC ", Melihova I.A. ,   MNTK ",   Eye Microsurgery",   , Volgograd branch, Purshak S.M. ,   S.N. Fedorov NMRC "MNTK "Eye Microsurgery", Volgograd branch, Efremova T.G. ,   S.N. Fedorov NMRC "MNTK "Eye Microsurgery", Volgograd branch
Published: August 2021

Purpose. Analysis of the diagnosis results and treatment of patients with macular hemorrhages in Valsalva retinopathy. Material and methods. The analysis was included 4 patients (4 eyes) with a diagnosis of Valsalva retinopathy. All patients were underwent a standard ophthalmological examination, as well as optical coherence tomography with angiography function (OCT-A). Results. To evaluate the results obtained in the course of a different approach to the treatment of macular hemorrhages. Conclusion. It is necessary to determine the approach to the choice of treatment tactics for patients with Valsalva retinopathy in a timely and differentiated manner, taking into account the prescription of the pathological process, the localization and volume of hemorrhage. Key words: macular hemorrhage, preretinal hemorrhage, internal limiting membrane (ILM), Valsalva retinopathy.
Differential diagnosis of active and inactive forms of cytomegalovirus retinitis
Authors:   Dmitry Rogachev National Research Center of pediatric hematology/oncology and immunology, Pershin B.S.
Published: August 2021

Purpose. Present the results of a study on the differential diagnosis of active and inactive forms of cytomegalovirus retinitis. Material and methods. 29 patients with cytomegalovirus retinitis, who underwent weekly fundus fluorescence angiography and intraocular fluid polymerase chain reaction during treatment. Results. Residual contrast fluorescence in the zone of cytomegalovirus retinitis foci was assessed on a scale from 0 to 4. The correlation between the intensity of contrast fluorescence in the fundus and the number of virus copies in the moisture of the anterior chamber was determined. The median of Spearman's criteria for the studied group of patients was 0.49. Conclusion. A positive relationship was revealed between the residual luminescence of CMR foci on PAH in the delayed phase of the study and the PCR values of the intraocular fluid, which makes it possible to rely on angiography data for the differential diagnosis of active and inactive CMRR. Key words: cytomegalovirus retinitis, fluorescein angiography.
Clinical characteristics and surgical outcomes of rhegmatogenous retinal detachment in patients ages 18-40 years
Authors:   Central Clinical Hospital with polyclinic of the Presidential Administration of the Russian Federation, Ophthalmology department, Avanesova T.A. , Anisimova V.V. ,   Central Clinical Hospital with polyclinic of the Presidential Administration of the Russian Federation, Ophthalmology department
Published: August 2021

The risk of rhegmatogenous retinal detachment (RRD) increases with age and its more common in the older age group, but several studies report a secondary peak of RRD in young patients. At the same time, RRD in young patients has clinical features. Purpose. To describe clinical features and surgical outcomes of RRD in young adults. Materials and мethods. Retrospective study of 33 patients (33 eyes) aged between 18 and 40 years, who underwent primary surgery between June 2018 and February 2021. The mean age of the patients was 33.9±6.7 years. All patients underwent either scleral buckling or pars plana vitrectomy. We analyzed demographic data, RRD characteristics, primary and final anatomic anatomic success rate and best-corrected visual acuity (BCVA) at the conclusion of follow-up. Results. The main etiologies were myopia (87.8%) and trauma (15%). were Macula on RRD was in 69.7% of patients. Primary anatomic success was in 69.7% cases, final anatomic success- 94%. (14 out of 16 eyes) after vitrectomy. The mean BCVA value improved to 0.65±0.35 (p=0.042). Conclusion. RRD in young adults aged between 18 and 40 years has clinical features and differs from that in older adults. The main causes are myopia, especially of high myopia and trauma. Macula off RRD is less common than macula on RRD. Primary anatomic success is less favorable compared to final anatomic success. The functional prognosis remains satisfactory and increased to 0.65±0.35 (p=0.042).
Application of predictor-corrector finite-difference-based schemes in the lattice Boltzmann method
Authors: Кривовичев Г.В. , Воскобойникова Е.В.
Published: August 2021

Построены конечно-разностные решеточные схемы Больцмана типа предиктор-корректор. Рассмотрены подход с раздельной аппроксимацией пространственных производных в конвективных членах кинетических уравнений и подход, когда эти члены заменяются одной конечной разностью. На обоих этапах процесса вычислений на одном шаге используются явные разностные схемы. При решении задачи о течении в каверне и задачи о вихрях Тейлора в широком диапазоне изменения числа Рейнольдса показано, что построенные схемы позволяют проводить расчеты с большим значением шага по времени, чем некоторые другие известные схемы.

Predictor-corrector finite-difference-based lattice Boltzmann schemes are proposed. An approach with separate approximation of spatial derivatives in the convective terms of kinetic equations and an approach when these terms are replaced by a single finite difference are considered. Explicit finite-difference schemes are used at both the stages of the computation process. The cavity flow problem and the Taylor vortex problem are solved numerically in a wide range of the Reynolds number. It is shown that the proposed schemes allow a larger time step compared to other known schemes.
Domain decomposition based on a direct method for solving the three-dimensional Poisson's equation in nonstationary astrophysical problems
Authors: Снытников Н.В.
Published: August 2021

Предложен новый параллельный алгоритм для решения трехмерного уравнения Пуассона в контексте нестационарных задач астрофизики. Алгоритм основан на декомпозиции трехмерной области по двум направлениям, в применении прямого метода решения задачи Дирихле в каждой подобласти и в комбинации метода сопряжения подобластей для двумерного экранированного уравнения Пуассона с методом разделения переменных. Тестовые эксперименты проводились на суперкомпьютерах Межведомственного суперкомпьютерного центра (МСКЦ) и Сибирского суперкомпьютерного центра (ССКЦ).

A new parallel algorithm for solving the three-dimensional Poisson's equation in the context of nonstationary problems of astrophysics is proposed. This algorithm is based on a decomposition of the 3D domain in two directions, on the application of a direct method for solving the Dirichlet problem in each subdomain, and on a combination of subdomains coupling for the screened Poisson's equation with the variable separation method. Test experiments were conducted on supercomputers installed at the Joint Supercomputing Center of Russian Academy of Sciences (Moscow) and at the Siberian Supercomputing Center (Novosibirsk).
An open AlgoWiki encyclopedia of algorithmic features: from mobile to extreme scale
Authors: Воеводин Вл.В.
Published: August 2021

Фундаментальная проблема высокопроизводительных вычислений - это необходимость аккуратного согласования структуры алгоритмов и программ с особенностями архитектуры компьютеров. Возможности современных компьютеров велики, но если хотя бы на одном из этапов процесса решения задачи согласования не будет, то и эффективность работы компьютера будет близка к нулю. Основная идея данного проекта состоит в том, что свойства самих алгоритмов никак не зависят от вычислительных систем, существующих сейчас или будущих. Иными словами, детальное описание машинно-независимых свойств алгоритма нужно сделать лишь один раз, после чего оно может быть многократно использовано при реализации данного алгоритма в различных программно-аппаратных средах. Не менее важна и вторая, машинно-зависимая часть данного исследования, которая посвящена описанию особенностей программной реализации алгоритмов с учетом конкретных программно-аппаратных
компьютерных платформ. Результатом проекта, которому посвящена данная статья, является открытая энциклопедия AlgoWiki по свойствам алгоритмов и особенностям их реализации для различных компьютерных систем. Умение эффективно работать со свойствами алгоритмов (выделять, описывать, анализировать, интерпретировать) станет широко востребованным уже через несколько лет, что будет верно как для экзафлопсных суперкомпьютерных систем высшего диапазона производительности, так и для всех других компьютерных платформ: от серверных до мобильных.

One of the fundamental problems of high performance computing consists in the necessity of a careful matching between the algorithmic structure of parallel programs and the features of a particular computer architecture. The performance capabilities of modern computers are significant; however, the computer's efficiency drastically decreases if such a matching is not achieved even in one of the stages during the process of solving a problem. The AlgoWiki project is based on the fact that the features of algorithms by themselves are not dependent on computing systems. In other words, a detailed description of machine-independent properties of an algorithm should be done only once; after that, this description can be used many times when implementing this algorithm on various hardware/software environments. Also of importance of this project is its machine-dependent part devoted to the description of algorithmic implementation peculiarities with consideration of particular hardware/software platforms. The main result of this project is an open AlgoWiki encyclopedia covering the properties of algorithms and the peculiarities of their implementation on various computing systems. The knowledge of how to reveal, describe, analyze, and interpret the properties of algorithms will become of significant importance in a few years. This conclusion is valid for future exaflop supercomputers and for other computing platforms: from server to mobile devices.
Supercomputer molecular modeling of thermodynamic equilibrium in gas-metal microsystems
Authors: Подрыга В.О. , Поляков С.В. , Пузырьков Д.В.
Published: August 2021

Статья посвящена суперкомпьютерному моделированию термодинамического равновесия в микросистемах, содержащих разные вещества, находящиеся в различных агрегатных состояниях. В качестве примера нами рассмотрена система газ-металл, в которой в качестве газа используется азот, в качестве металла - никель. Такой выбор обусловлен тем, что рассматриваемая микросистема является основой многих технических приложений. В том числе, она используется в установках сверхзвукового холодного газодинамического напыления наночастиц на
поверхности перспективных углеродсодержащих материалов. На первом этапе исследований представляет интерес равновесное состояние микросистемы азот-никель. Для моделирования процесса установления термодинамического равновесия в такой системе применен молекулярно-динамический подход. Выбранный численный алгоритм его реализации базируется на конечно-разностной схеме Верле. Для ускорения вычислений предложен параллельный алгоритм и выполнена его реализация в рамках технологий MPI и OpenMP. С помощью
разработанной программы исследован процесс установления термодинамического равновесия как в чистых компонентах (азоте и никеле) при нескольких значениях температуры, включая комнатную, так и в системе азот-никель. В численных экспериментах определены как оптимальные параметры методики расчета, в том числе
эффективность распараллеливания при использовании процессоров с различной архитектурой, так и физические параметры моделируемого процесса.

This paper is devoted to the supercomputer modeling of thermodynamic equilibrium in microsystems containing different substances in various aggregate states. As an example, a nitrogen-nickel system is considered. This choice is due to the fact that such a microsystem is the basis of many technical applications, including the devices of supersonic cold gas-dynamic sputtering using nanoparticles on the surfaces of perspective carbonaceous materials. At the first stage of studies, the equilibrium state of a nitrogen-nickel microsystems is of interest. The molecular dynamic approach is used to model the thermodynamic equilibrium in this microsystem. The chosen numerical algorithm of its implementation is based on the Verlet finite-difference scheme. In order to increase the computational speedup, a parallel algorithm is proposed; its implementation is performed using the MPI and OpenMP technologies. The developed parallel solver is employed to study the establishment of thermodynamic equilibrium in the pure components (nitrogen and nickel) at several temperatures, including room temperature, and in the nitrogen-nickel microsystem. In the numerical experiments, the optimum parameters of the calculation procedure (including the efficiency of parallelization using processors of different architecture) and the physical parameters of the modeled process are found.
Gradient methods for solving inverse gravimetry and magnetometry problems on the Uran supercomputer
Authors: Акимова Е.Н. , Мисилов В.Е. , Скурыдина А.Ф. , Третьяков А.И.
Published: August 2021

Для решения трехмерных структурных обратных задач гравиметрии и магнитометрии о нахождении поверхностей раздела слоев постоянной плотности либо намагниченности для модели многослойной среды предложен линеаризованный модифицированный метод наискорейшего спуска с весовыми множителями. Построен линеаризованный метод сопряженных градиентов и его модифицированный вариант с весовыми множителями
для решения задач гравиметрии и магнитометрии в многослойной среде. На основе модифицированных методов
градиентного типа разработаны эффективные параллельные алгоритмы, численно реализованные на многоядерном процессоре Intel и графических процессорах NVIDIA. Для модельной задачи проведено сравнение параллельных итерационных алгоритмов по относительной погрешности, числу итераций и времени счета.

A modified linearized steepest descent method with variable weight factors is proposed to solve three-dimensional structural inverse gravimetry and magnetometry problems of finding the interfaces between constant density or magnetization layers in a multilayer medium. A linearized conjugate gradient method and its modified version with weight factors for solving the gravimetry and magnetometry problems in a multilayer medium is constructed. On the basis of the modified gradient-type methods, a number of efficient parallel algorithms are numerically implemented on an Intel multi-core processor and NVIDIA GPUs. The developed parallel iterative algorithms are compared for a model problem in terms of the relative error, the number of iterations, and the execution time.
On a problem of the synthesis of nano-optical protection elements
Authors: Гончарский А.А. , Дурлевич С.Р.
Published: August 2021

Рассматривается проблема математического моделирования и синтеза нанооптических элементов, формирующих двумерные изображения для автоматического контроля их подлинности. Обратная задача синтеза ставится в скалярном волновом приближении Френеля. Задача сводится к решению нелинейного операторного уравнения Фредгольма первого рода, для решения которого предлагаются эффективные численные методы. Разработанные нанооптические элементы при их освещении когерентным излучением формируют двумерные изображения, используемые для автоматизированной идентификации. Предложенная процедура идентификации инвариантна
относительно поворота и сдвига изображения. С использованием электронно-лучевой литографии изготовлены образцы нанооптических элементов для излучения с длиной волны 650 нанометров. Технология нанолитографии позволяет формировать микрорельеф с точностью до 20 нанометров. Разработанные оптические элементы
устойчивы к частичному повреждению микрорельефа и могут быть использованы для идентификации банкнот, документов и др.

This paper deals with the mathematical modeling and the synthesis of nano-optical elements for the forming of 2D images used for automated identification. The inverse problem of synthesis is considered in Fresnel's scalar wave approximation. The problem is reduced to the solution of a nonlinear Fredholm operator equation of the first kind. Some efficient numerical iterative methods are developed to solve the inverse problem. When illuminated by a coherent light, the designed nano-optical elements produce 2D images used for the automated identification. The proposed identification procedure is invariant with respect to rotations and shifts of images. The electron beam lithography was used to produce samples of nano-optical elements for the case of 650 nm wavelength. The microfabrication technology allows forming a microrelief with 20 nm accuracy. Such nanooptical elements are resistant against the damage of microreliefs and can be used for the verification of banknotes, documents, etc.