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Journal articles on the topic 'Rop Complex'

Author: Grafiati

Published: 3 June 2025

Last updated: 31 July 2025

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1

Labbé, Jean-Claude, Siegfried Hekimi, and Luis A. Rokeach. "Assessing the function of the Ro ribonucleoprotein complex using Caenorhabditis elegans as a biological tool." Biochemistry and Cell Biology 77, no. 4 (1999): 349–54. http://dx.doi.org/10.1139/o99-036.

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The Ro ribonucleoprotein complex (Ro RNP) was initially described as an autoimmune target in human diseases such as systemic lupus erythematosus and Sjögren's syndrome. In Xenopus and human cells, its general structure is composed of one major protein of 60 kDa, Ro60, that binds to one of four small RNA molecules, designated Y RNAs. Although no function has been assigned to the Ro RNP, Ro60 has been shown to bind mutant 5S ribosomal RNA (rRNA) molecules in Xenopus oocytes, suggesting a role for Ro60 in 5S rRNA biogenesis. Ro60 has also been shown to participate in the regulation of the transla

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2

Rodriguez, Sarah H., Anna L. Ells, Michael P. Blair, et al. "Retinopathy of Prematurity in the 21st Century and the Complex Impact of Supplemental Oxygen." Journal of Clinical Medicine 12, no. 3 (2023): 1228. http://dx.doi.org/10.3390/jcm12031228.

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Retinopathy of prematurity (ROP) is a leading cause of childhood blindness. Not only do the epidemiologic determinants and distributions of patients with ROP vary worldwide, but clinical differences have also been described. The Third Edition of the International Classification of ROP (ICROP3) acknowledges that aggressive ROP (AROP) can occur in larger preterm infants and involve areas of the more anterior retina, particularly in low-resource settings with unmonitored oxygen supplementation. As sub-specialty training programs are underway to address an epidemic of ROP in sub-Saharan Africa, re

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3

Zueva, M. V., L. V. Kogoleva, and L. A. Katargina. "Retinal plasticity in retinopathy of prematurity, and phototherapy prospects." Russian Ophthalmological Journal 13, no. 1 (2020): 77–84. http://dx.doi.org/10.21516/2072-0076-2020-13-1-77-84.

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In premature babies, plastic changes develop in the neural retina, which, depending on the severity of retinopathy of prematurity (ROP), are a manifestation of adaptive or non-adaptive plasticity. In various experimental studies on animal ROP models, the conditioning effects of intermittent white light stimulation and various mechanisms of the positive effect of red and ultraviolet radiation on the plasticity of the retina have been demonstrated, which allows phototherapy to be considered as a promising modifying treatment for ROP supplementing the main therapy. Taking into account that light-

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4

Kariakin, M. A., E. A. Stepanova, S. A. Korotkikh, N. S. Timofeeva, and S. I. Surtaev. "Application of vessel endothelium growth factor inhibitor ranibizumab in complex therapy of retinopathy of prematurity." Russian Pediatric Ophthalmology 16, no. 3 (2021): 5–10. http://dx.doi.org/10.17816/rpoj90740.

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AIM: To conduct a retrospective study of the application of vessel endothelium growth factor inhibitor ranibizumab in complex therapy of retinopathy of prematurity in Ural State children`s ophthalmological center at State Autonomic Health Institution of the Sverdlovsk Region Multiprofile Clinical Medical Center BONUM in Yekaterinburg. MATERIAL AND METHODS: The study included 17 patients (33 eyes). The gestation age was from 23 to 30 weeks (mean: 26.51.7 weeks), birth weight was from 600 to 1850 g (mean: 867229 g). 8 patients (47%) had APROP, and 9 patients (53%) had ROP stage III, type 1

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5

Pollan, Charlene. "Retinopathy of Prematurity: An Eye Toward Better Outcomes." Neonatal Network 28, no. 2 (2009): 93–101. http://dx.doi.org/10.1891/0730-0832.28.2.93.

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Retinopathy of prematurity (ROP) results from the abnormal growth of blood vessels in the vascular bed supporting the developing retina. Estimated to cause up to 500 new cases of blindness in the U.S. each year, ROP affects primarily infants born at less than 1,500 g. Although its etiology is not well understood, ROP is thought to occur as a result of a complex interaction between oxygen and vascular growth factors. This article briefly reviews the history of ROP, discusses its pathophysiology, and addresses the risk factors and strategies for prevention.

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Vargha, András, and Péter Bánsági. "ROP-R: a free multivariate statistical software that runs R packages in a ROPstat framework." Hungarian Statistical Review 5, no. 2 (2022): 3–29. http://dx.doi.org/10.35618/hsr2022.02.en003.

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This paper introduces ROP-R, a new and free ROPstat-based multivariate statistical program package. ROP-R provides a user-friendly menu system for running several statistical procedures (several regressions, dimension reduction analyses, clustering procedures) by means of ROP-R-created R scripts, just as JASP or jamovi, but in several modules offering new opportunities (e.g. model-based cluster analysis). The usefulness and elegance of the ROP-R are illustrated in a separate chapter by a complex series of statistical analyses made with a data sample from a study on the psychological topic of a

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Wu, Zebing, Mengjie Jiang, Weixin Zheng, Yabing Gu, Xiping Zhai, and Chenjuan Yang. "Modeling and Simulation of Rock Bits Based on Mega Drilling Data." Journal of Physics: Conference Series 2179, no. 1 (2022): 012013. http://dx.doi.org/10.1088/1742-6596/2179/1/012013.

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Abstract Rock bits directly undertake the task of fracturing rock under earth during drilling operation. Accurate prediction of Rate of penetration (ROP) play an important role in reducing drilling costs and shortening the drilling cycle. This paper introduces ROP prediction methods including empirical mathematical modeling, computer simulation of bit-rock interaction and BP neural network model based on mega drilling data. The most significant factors affecting ROP are summarized as follows: weight on bit(WOB), rotation speed, rock formation properties, bit cutting structure, etc., which have

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Zhao, Xiuwen, Hu Yin, and Qian Li. "Data Knowledge Dual-Driven Rate of Penetration Prediction Method for Horizontal Wells." Applied Sciences 13, no. 20 (2023): 11396. http://dx.doi.org/10.3390/app132011396.

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The prediction and optimization of the rate of penetration (ROP) for horizontal wells are more complicated than for vertical wells, but most of the current ROP prediction studies are for vertical wells, which cannot be adapted to the complex drilling characteristics of horizontal wells. To this end, this paper proposes a data knowledge dual-driven horizontal well ROP prediction method. Firstly, the drilling characteristics of horizontal wells are analyzed, showing that the horizontal wells ROP prediction model cannot be modeled using surface measurement data; secondly, based on the analysis of

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Wang, Yingjie, Qiang Tan, Desheng Wu, Hao Chen, Naikun Hu, and Yuxuan Zhao. "A Data-Driven Approach to Predict the ROP of Deep Wells in Fukang Sag." Applied Sciences 13, no. 22 (2023): 12471. http://dx.doi.org/10.3390/app132212471.

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In the deep well drilling process in the Fukang Depression of the Eastern Junggar Basin, rock fracturing issues and low rate of penetration (ROP) have posed significant challenges to drilling efficiency. Accurate predictions of ROP prior to drilling are of considerable value in this context. Precise predictions enable on-site engineering teams to proactively identify drilling difficulties and anticipate potential complex scenarios, facilitating them in designing preventive measures in advance, such as selecting appropriate drill bits, adjusting drilling parameters, or employing specific drilli

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Chen, Haodong, Yan Jin, Wandong Zhang, Junfeng Zhang, Lei Ma, and Yunhu Lu. "Deep Neural Network Prediction of Mechanical Drilling Speed." Energies 15, no. 9 (2022): 3037. http://dx.doi.org/10.3390/en15093037.

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Rate of penetration (ROP) prediction is critical for the optimization of drilling parameters and ROP improvement during drilling. However, it is still challenging to accurately predict ROP based on traditional empirical formula methods. This is usually the case for the development of the Wushi 17-2 oilfield block in the South China Sea. The Liushagang Formation is complex and the ROP is relatively low and difficult to increase. Ordinary data-driven ROP prediction models are not applicable because they do not take into account the complexity of formation conditions. In this work, we characteriz

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Makogon, S. I., N. V. Gorbacheva, and Y. S. Khlopkova. "Diabetes mellitus as a risk factor for development retinopathy of prematurity. Review." Diabetes mellitus 27, no. 5 (2024): 487–97. http://dx.doi.org/10.14341/dm12999.

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Retinopathy of prematurity (ROP) is a complex and unresolved problem in pediatric ophthalmology, leading to visual disability. Low birth weight and prematurity are the main risk factors, and they form the basis of clinical recommendations for screening for ROP in all children under 35 weeks of gestational age and weighing less than 2000 g. However, many researchers point to other risk factors that can be divided into maternal, prenatal and perinatal. In this review, we consider maternal diabetes mellitus as a risk factor for ROP. Changes in the retina in premature infants and mothers with diab

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Trifonova, Kalina, Kiril Slaveykov, Hristo Mumdzhiev, and Dimitar Dzhelebov. "Artificial Reproductive Technology – A Risk Factor for Retinopathy of Prematurity." Open Access Macedonian Journal of Medical Sciences 6, no. 11 (2018): 2245–49. http://dx.doi.org/10.3889/oamjms.2018.448.

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BACKGROUND: Retinopathy of Prematurity (ROP) is a potentially blinding vasoproliferative disease in premature babies. The presentation and course of ROP are determined by a complex interaction of a series of risk factors, including artificial reproductive technology (ART). AIM: To analyse and combine the information relating ART as an independent risk factor for retinopathy of prematurity. METHODS AND MATERIAL: The article is systematic review and meta-analysis using RevMan 5. Pubmed, Scopus and Medline were searched for articles from 1990 to 2018. RESULTS: Studies suggest th

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Wu, Po-Yi, Yuan-Kai Fu, Rey-In Lien, et al. "Systemic Cytokines in Retinopathy of Prematurity." Journal of Personalized Medicine 13, no. 2 (2023): 291. http://dx.doi.org/10.3390/jpm13020291.

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Retinopathy of prematurity (ROP), a vasoproliferative vitreoretinal disorder, is the leading cause of childhood blindness worldwide. Although angiogenic pathways have been the main focus, cytokine-mediated inflammation is also involved in ROP etiology. Herein, we illustrate the characteristics and actions of all cytokines involved in ROP pathogenesis. The two-phase (vaso-obliteration followed by vasoproliferation) theory outlines the evaluation of cytokines in a time-dependent manner. Levels of cytokines may even differ between the blood and the vitreous. Data from animal models of oxygen-indu

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Zang, Chuanzhen, Zongyu Lu, Shanlin Ye, et al. "Drilling Parameters Optimization for Horizontal Wells Based on a Multiobjective Genetic Algorithm to Improve the Rate of Penetration and Reduce Drill String Drag." Applied Sciences 12, no. 22 (2022): 11704. http://dx.doi.org/10.3390/app122211704.

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With the development of China’s oil and gas exploration and development to complex oil and gas fields, the drilling efficiency and safety of complex formations with large hardness and strong abrasiveness have become increasingly significant. Optimizing drilling parameters is an effective means to increase the rate of penetration (ROP) and improve drilling efficiency. However, traditional drilling parameter optimization methods with only a single objective of increasing the ROP lack consideration of the drill string’s drag which may also be increased when drilling parameters change. When drilli

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15

Astasheva, I. B., E. E. Sidorenko, Y. D. Kuznetsova, I. I. Aksenova, and I. V. Sukhanova. "Modern aspects of retinopathy of prematurity treatment." Russian ophthalmology of children 52, no. 2 (2025): 15–22. https://doi.org/10.25276/2307-6658-2025-2-15-22.

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Abstract Purpose. To determine the effectiveness of laser coagulation and angiogenesis inhibitor in ROP and to establish the preferential use of these methods, the sequence in the combined treatment of ROP. Material and methods. We examined 505 children (1010 eyes) under one year of age who underwent laser coagulation of the retina, 108 children (216 eyes) — intravitreal administration of an angiogenesis inhibitor. Results. Stabilization of the process after laser coagulation of the retina is noted in 94.7% of cases (in 97.9% with «plus» disease and in 78.8% with aggressive posterior ROP), aft

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Kose, Seima, Yumi Suenaga, and Kazumasa Oida. "Real-time Attack-Scheme Visualization for Complex Exploit Technique Comprehension." International Journal of Machine Learning and Computing 11, no. 2 (2021): 164–69. http://dx.doi.org/10.18178/ijmlc.2021.11.2.1030.

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Recent exploit techniques are highly complex, and it is not easy for cybersecurity learners to understand the attack strategies quickly and clearly. For efficient and comprehensive learning, this paper proposes an attack-scheme visualization system that fulfills three requirements: attack progress visualization in real-time, memory and register-level description, and concise description of the attack schemes. This paper exemplifies two cases: stack buffer overflow and ROP attacks, and demonstrates how the system operates and how users can learn that existing defense technologies are effective

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Mu, Hua-yan, Guan-cheng Jiang, Jin-sheng Sun, Teng-fei Dong, and Yin-bo He. "Optimization of Rock Breaking Parameters by Combing Mechanical Specific Energy Theory and Random Forest Algorithm." Journal of Physics: Conference Series 2834, no. 1 (2024): 012057. http://dx.doi.org/10.1088/1742-6596/2834/1/012057.

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Abstract As the key indicators to evaluate drilling efficiency, mechanical rate of penetration (ROP) and mechanical specific energy (MSE) are affected by many uncertain factors. In the actual drilling process, it is often necessary to adjust the parameters to achieve speed and efficiency. A dual-objective model is established considering the maximization of ROP and the minimization of MSE. Which combined with the theory of mechanical specific energy and the principle of multi-objective optimization, the model parameter weights are determined by the feature importance in the random forest regre

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Gaba, Alisha, Harijot Singh, and Rajwinder Kaur. "Association of various postnatal risk factors with progression of retinopathy of prematurity (ROP) in preterm neonates: A case-control study." Journal of Family Medicine and Primary Care 14, no. 4 (2025): 1368–74. https://doi.org/10.4103/jfmpc.jfmpc_1493_24.

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ABSTRACT Retinopathy of prematurity (ROP) is a complex disease of the developing retinal vasculature in infants born prematurely and is the leading preventable cause of childhood blindness worldwide. Multiple factors play a significant role in the pathogenesis of this disease. Aim: Our study aimed to determine and analyze various postnatal risk factors involved in the development and progression of ROP amongst preterm neonates. Methods: This case-control ambispective study was conducted at a single tertiary care hospital between 01-01-2019 and 31-07-2023. A total of 112 eyes (56 preterm neonat

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Harinath, Adimulam, Jayeeta Bhattacharjee, Alok Sarkar та Tarun K. Panda. "Alkali metal complex-mediated ring-opening polymerization of rac-LA, ε-caprolactone, and δ-valerolactone". New Journal of Chemistry 43, № 23 (2019): 8882–91. http://dx.doi.org/10.1039/c9nj01130g.

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20

Nifant’ev, Ilya, Andrey Shlyakhtin, Maxim Kosarev, Stanislav Karchevsky, and Pavel Ivchenko. "Mechanistic Insights of BHT-Mg-Catalyzed Ethylene Phosphate’s Coordination Ring-Opening Polymerization: DFT Modeling and Experimental Data." Polymers 10, no. 10 (2018): 1105. http://dx.doi.org/10.3390/polym10101105.

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Poly(ethylene phosphates) are promising polymers for use in biomedical applications. Catalytic ring-opening polymerization (ROP) of cyclic ethylene phosphate monomers (CEPMs) is the most effective approach for obtaining these polymers. The mechanism of coordination ROP of CEPMs remains unclear. We report, for the first time, the results of DFT modeling of CEPM ROP. In these calculations by Gaussian-09 program package with the B3PW91/DGTZVP basis set, we explored methyl ethylene phosphate (MeOEP) ROP catalyzed by dimeric and monomeric catalytic species derived from heteroleptic complex [(BHT)Mg

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Huang, Zhe, Lin Zhu, Chaochen Wang, et al. "Intelligent Prediction of Rate of Penetration Using Mechanism-Data Fusion and Transfer Learning." Processes 12, no. 10 (2024): 2133. http://dx.doi.org/10.3390/pr12102133.

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Rate of penetration (ROP) is crucial for evaluating drilling efficiency, with accurate prediction essential for enhancing performance and optimizing parameters. In practice, complex and variable downhole environments pose significant challenges for mechanistic ROP equations, resulting in prediction difficulties and low accuracy. Recently, data-driven machine learning models have been widely applied to ROP prediction. However, these models often lack mechanistic constraints, limiting their performance to specific conditions and reducing their real-world applicability. Additionally, geological v

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Khlopkova, Yuliya S., Lyudmila V. Kogoleva, and Vladimir I. Lebedev. "Microstructural changes in the retina in children with retinopathy of prematurity according to optical coherence tomography. Literature review." Russian Pediatric Ophthalmology 19, no. 2 (2024): 117–23. http://dx.doi.org/10.17816/rpoj625491.

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Retinopathy of prematurity (ROP) is a crucial problem in modern ophthalmology. ROP is a vasoproliferative disease of the eyes in premature infants. Approximately 50,000 children worldwide have become blind because of ROP. The determining indicator in the development of visual acuity is the morphofunctional state of the macula, structural changes of which can lead to disturbances in its functions and, consequently, decreased vision. The present review analyzed available OCT (optical coherence tomography) data on the morphometric and structural state of the retina in children with ROP. Morphomet

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Danish Zafar, NargisNoman, Muhammad Sharjeel, and Zeeshan Hameed. "EVALUATION OF BASIC KNOWLEDGE OF RETINOPATHY OF PREMATURITY: A MULTI-DISCIPLINARY STUDY." Health Sciences Journal 1, no. 1 (2023): 1–6. http://dx.doi.org/10.59365/hsj.1(1).2022.21.

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Aim: To evaluate the basic knowledge of doctors about retinopathy of prematurity, dealing mostly with ROP in pediatric and ophthalmology departments. Study Design: Quantitative, cross sectional study Place and Duration: Ayub Teaching Hospital Complex, Abbottabad from 1st April 2022 to 8th April 2022 (one-week duration) Material and Methods: After explaining the whole scenario to the participants, a questionnaire was handed over to them which contained different questions regarding ROP. Data response was saved, evaluated and then analyzed in terms of percentages of response. E

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Kariakin, M. A., E. A. Stepanova, S. A. Korotkikh, N. S. Timofeeva та S. I. Surtaev. "The first experience of application of vessel endothelium growth factor inhibitor ranibizumab in complex therapy of retinopathy of premature in URFO in SAHI of the Sverdlovsk region MСMC «Bonum»". Modern technologies in ophtalmology, № 3 (15 липня 2021): 360–62. http://dx.doi.org/10.25276/2312-4911-2021-3-360-362.

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Material and methods. The study included 16 patients (31 eyes). Types and terms of treatment. Stage I in the treatment of ROP, laser coagulation of the avascular areas of the retina was performed in three patients with aggressive posterior ROP (4 eyes, 12.9%). In all patients, the progression of the disease was noted. Intravitreal injection of ranibizumab was performed in the period from 8 to 16 weeks (10.5±2.0 weeks), PCV from 32.3 to 39.6 weeks (37.0±1.8 weeks). Result. After laser treatment and IVI of ranibizumab, 11 patients (31 eyes, 81.6%) showed regression of the disease. In 5 patients

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Kireenko, Marina M., Ekaterina A. Kuchuk, Kirill V. Zaitsev, et al. "Aluminum complexes based on pyridine substituted alcohols: synthesis, structure, and catalytic application in ROP." Dalton Transactions 44, no. 26 (2015): 11963–76. http://dx.doi.org/10.1039/c5dt01001b.

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Liu, Yongwang, Yixiang Niu, Zhichuan Guan, and Shuquan Lyu. "The Review and Development of Devices with an Increasing Rate of Penetration (ROP) in Deep Formation Drilling Based on Drill String Vibration." Energies 15, no. 19 (2022): 7377. http://dx.doi.org/10.3390/en15197377.

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The oil and gas resources stored in deep strata are an important replacement field of the petroleum industry. Accelerating the exploration and development of deep oil and gas is of great significance to the security of energy strategy. Drilling is the primary link and necessary means of deep oil and gas exploration and development. Slow drilling speed is one of the key problems restricting the exploration and development of deep oil and gas. The research and development of down-hole equipment with an increasing ROP provides a technical means for increasing the ROP. However, the energy of exist

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Jenkins, David T., Eszter Fazekas, Samuel B. H. Patterson, Georgina M. Rosair, Filipe Vilela, and Ruaraidh D. McIntosh. "Polymetallic Group 4 Complexes: Catalysts for the Ring Opening Polymerisation of rac-Lactide." Catalysts 11, no. 5 (2021): 551. http://dx.doi.org/10.3390/catal11050551.

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Five novel air- and moisture-stable polymetallic Ti and Zr amino acid-derived amine bis(phenolate) (ABP) complexes were synthesised and fully characterised, including X-ray crystallographic studies. The reaction of the ABP proligands with Ti or Zr alkoxides has resulted in the formation of polymetallic aggregates of different nuclearity. The steric bulk on the pendant arm of the ligand was found to play a critical role in establishing the nuclearity of the aggregated complex. Sterically, less-demanding groups, such as H or Me, facilitated the formation of tetrametallic Ti clusters, bridged by

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Vargha, András, and Ferenc Grezsa. "Exploring Types of Parent Attachment via the Clustering Modules of a New Free Statistical Software, ROP-R." Journal for Person-Oriented Research 10, no. 1 (2024): 1–15. http://dx.doi.org/10.17505/jpor.2024.25655.

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The aim of the paper is threefold: (1) to demonstrate the rich repertoire of clustering capabilities of a ROPstat and R-based new and free software, called ROP-R, by illustrating several analyses with real psychological data; (2) to show how well ROP-R works in tandem with ROPstat software in complex classification analyses; and (3) to explore some nontrivial types of parent attachment using the clustering modules of ROP-R. Four modules of ROP-R are available for performing cluster analyses (CAs), with several methods (e.g., divisive hierarchical CA, k-medoids CA, k-medians CA, model-based CA)

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Vargha, András, and Ferenc Grezsa. "Exploring types of parent attachment via the clustering modules of a new free statistical software, ROP-R." Journal for Person-Oriented Research 10, no. 1 (2024): 1–15. http://dx.doi.org/10.17505/jpor.2024.26255.

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The aim of the paper is threefold: (1) to demonstrate the rich repertoire of clustering capabilities of a ROPstat and R-based new and free software, called ROP-R, by illustrating several analyses with real psychological data; (2) to show how well ROP-R works in tandem with ROPstat software in complex classification analyses; and (3) to explore some nontrivial types of parent attachment using the clustering modules of ROP-R. Four modules of ROP-R are available for performing cluster analyses (CAs), with several methods (e.g., divisive hierarchical CA, k-medoids CA, k-medians CA, model-based CA)

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Routaray, Anita, Nibedita Nath, Tungabidya Maharana, and Alekha kumar Sutar. "Synthesis and Immortal ROP ofL-Lactide Using Copper Complex." Journal of Macromolecular Science, Part A 52, no. 6 (2015): 444–53. http://dx.doi.org/10.1080/10601325.2015.1029370.

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Wang, Xin, Jiaxi Xu, Zhenjiang Li, et al. "Non-metal with metal behavior: metal-free coordination-insertion ring-opening polymerization." Chemical Science 12, no. 32 (2021): 10732–41. http://dx.doi.org/10.1039/d1sc02551a.

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The first metal-free “coordination-insertion” ROP of cyclic carbonate and lactones mediated by N-trimethylsilyl-bis(trifluoromethanesulfonyl)imide (TMSNTf2) was proposed, which in the past was exclusively the monopoly of metal complex catalysts.

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Normand, Adrien T., Raluca Malacea-Kabbara, Rosita Lapenta, et al. "Phosphasalen group IV metal complexes: synthesis, characterization and ring opening polymerization of lactide." Dalton Transactions 49, no. 21 (2020): 6989–7004. http://dx.doi.org/10.1039/d0dt00972e.

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A series of discrete mononuclear neutral and cationic phosphasalen Ti and Zr complexes has been isolated and characterized. For the first time, a cationic group IV metal complex was found active in the ROP of LA.

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Nautiyal, A., and A. K. Mishra. "Drill Bit Selection and Drilling Parameter Optimization using Machine Learning." IOP Conference Series: Earth and Environmental Science 1261, no. 1 (2023): 012027. http://dx.doi.org/10.1088/1755-1315/1261/1/012027.

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Abstract Machine Learning (ML) Algorithms have demonstrated their tremendous application in optimizing and enhancing the performance of various complex operations in the field of science and technology. In this research work, ML is applied to address two of the most critical factors affecting the drilling performance in the Oil and Gas Industry, which are drilling bit selection and drilling parameters optimization. Rate of Penetration is a key performance indicator of drilling efficiency, higher ROP signifies higher drilling efficiency. In this research work, a hyperparameter tuned Random Fore

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Scheible, Nolan, Gyeong Mee Yoon, and Andrew G. McCubbin. "Calmodulin Domain Protein Kinase PiCDPK1 Regulates Pollen Tube Growth Polarity through Interaction with RhoGDI." Plants 11, no. 3 (2022): 254. http://dx.doi.org/10.3390/plants11030254.

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The pollen-specific calcium-dependent protein kinase PiCDPK1 of Petunia inflata has previously been shown to regulate polarity in tip growth in pollen tubes. Here we report the identification of a Rho Guanine Dissociation Inhibitor (PiRhoGDI1) as a PiCDPK1 interacting protein. We demonstrate that PiRhoGDI1 and PiCDPK1 interact in a yeast 2-hybrid assay, as well as in an in vitro pull-down assay, and that PiRhoGDI1 is phosphorylated by PiCDPK1 in vitro. We further demonstrate the PiRhoGDI1 is capable of rescuing the loss of growth polarity phenotype caused by over-expressing PiCDPK1 in vivo usi

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Sun, Ziyue, Yanxia Zhao, Orlando Santoro, et al. "Use of titanocalix[4]arenes in the ring opening polymerization of cyclic esters." Catalysis Science & Technology 10, no. 6 (2020): 1619–39. http://dx.doi.org/10.1039/c9cy02571e.

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Titanocalix[4]arenes are shown to be active for the ROP of cyclic esters under N<sub>2</sub> or air with the mono-methoxy complex [Ti(NCMe)Cl(p-tert-butylcalix[4]arene(O)<sub>3</sub>(OMe))] performing best.

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Miki, Akiko, Yuko Yamada, and Makoto Nakamura. "The Size of the Foveal Avascular Zone Is Associated with Foveal Thickness and Structure in Premature Children." Journal of Ophthalmology 2019 (July 2, 2019): 1–5. http://dx.doi.org/10.1155/2019/8340729.

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Purpose. To investigate the foveal avascular zone (FAZ) in the eyes of patients with a history of retinopathy of prematurity (ROP) using optical coherence tomography angiography (OCTA) and to identify associated clinical factors. Patients and methods. Overall, 14 children with a history of laser treatment for ROP, 17 children born prematurely without a history of ROP, and 41 age-matched children born at full-term (age range 7–14 years) were included. OCTA was conducted on an area measuring 3 × 3 mm in the central macula. The area of FAZ in the superficial layer was measured. Foveal thickness (

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Xu, T., N. Dai, J. Chen, et al. "Cell Surface ABP1-TMK Auxin-Sensing Complex Activates ROP GTPase Signaling." Science 343, no. 6174 (2014): 1025–28. http://dx.doi.org/10.1126/science.1245125.

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Nikiforov, Alexey, Natalia Panina, Daniil Blinou, et al. "Ring-Opening Polymerization of rac-Lactide Catalyzed by Octahedral Nickel Carboxylate Complexes." Catalysts 13, no. 2 (2023): 304. http://dx.doi.org/10.3390/catal13020304.

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To date, nickel(II) complexes have not been practically investigated as catalysts in ring-opening polymerization (ROP) of lactide to produce biodegradable poly(lactic acid), which is in demand in biomedicine and industry. In this study, carboxylate complexes of nickel(II) containing various N-donor ligands with different nuclearity, metal core rigidity and nature of carboxylate ligands were synthesized and studied by infrared spectroscopy, X-ray diffraction, elemental and thermogravimetric analyses. The obtained complexes were examined in the (ROP of the rac-lactide in bulk and in toluene solu

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Kostomakhin, M. N., and N. Z. Khismetov. "Marketing approach in the organization of repair enterprises on the example of the Republic of Tatarstan." Sel'skohozjajstvennaja tehnika: obsluzhivanie i remont (Agricultural Machinery: Service and Repair), no. 5 (May 24, 2024): 39–44. http://dx.doi.org/10.33920/sel-10-2405-05.

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In the market conditions of production, almost all repair and maintenance enterprises of the agro-industrial complex (hereinafter referred to as ROP) faced the problem of survival and the need for reform to ensure successful operation in the new business environment. The eff ectiveness of the organization of repair production is expressed in increasing labor productivity, improving the use of fi xed assets, improving the quality of products, as well as an increase in demand for technical services due to the quality, price and duration of repairs satisfying the consumer. To achieve these goals,

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Liu, Hongtao, Yan Jin, Xianzhi Song, and Zhijun Pei. "Rate of Penetration Prediction Method for Ultra-Deep Wells Based on LSTM–FNN." Applied Sciences 12, no. 15 (2022): 7731. http://dx.doi.org/10.3390/app12157731.

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The drilling process is complex, especially for ultra-deep wells, which face the problems of high temperature, high pressure and poor drilling resistance in their formation. In order to establish an ROP (the Rate of Penetration) prediction model for ultra-deep wells, the characteristics of ultra-deep well drilling operations, such as formation temperature and formation pressure, are fully considered in the process of parameter optimization. Combined with the drilling mechanism and mutual information correlation coefficient, the final input parameters are determined. The powerful nonlinear fitt

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Wang, Jianhua, Zhi Yan, Tao Pan, Zhaopeng Zhu, Xianzhi Song, and Donghan Yang. "Drilling Parameters Multi-Objective Optimization Method Based on PSO-Bi-LSTM." Applied Sciences 13, no. 21 (2023): 11666. http://dx.doi.org/10.3390/app132111666.

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The increasing exploration and development of complex oil and gas fields pose challenges to drilling efficiency and safety due to the presence of formations with varying hardness, abrasiveness, and rigidity. Consequently, there is a growing demand for drilling parameter optimization and speed-up technologies. However, existing models based on expert experience can only achieve single-objective optimization with limited accuracy, making real-time adaptation to changing drilling conditions and formation environments challenging. The emergence of artificial intelligence provides a new approach fo

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Athanasiou, Varvara, Pandora Thimi, Melina Liakopoulou та ін. "Synthesis and Characterization of the Novel Nε-9-Fluorenylmethoxycarbonyl-l-Lysine N-Carboxy Anhydride. Synthesis of Well-Defined Linear and Branched Polypeptides". Polymers 12, № 12 (2020): 2819. http://dx.doi.org/10.3390/polym12122819.

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The synthesis of well-defined polypeptides exhibiting complex macromolecular architectures requires the use of monomers that can be orthogonally deprotected, containing primary amines that will be used as the initiator for the Ring Opening Polymerization (ROP) of N-carboxy anhydrides. The synthesis and characterization of the novel monomer Nε-9-Fluorenylmethoxycarbonyl-l-Lysine N-carboxy anhydride (Nε-Fmoc-l-Lysine NCA), as well as the novel linear Poly(Nε-Fmoc-l-Lys)n homopolypeptide and Poly(l-Lysine)78–block–[Poly(l-Lysine)10–graft–Poly(l-Histidine)15] block-graft copolypeptide, are present

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Žárský, Viktor, and Martin Potocký. "Recycling domains in plant cell morphogenesis: small GTPase effectors, plasma membrane signalling and the exocyst." Biochemical Society Transactions 38, no. 2 (2010): 723–28. http://dx.doi.org/10.1042/bst0380723.

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The Rho/Rop small GTPase regulatory module is central for initiating exocytotically ACDs (active cortical domains) in plant cell cortex, and a growing array of Rop regulators and effectors are being discovered in plants. Structural membrane phospholipids are important constituents of cells as well as signals, and phospholipid-modifying enzymes are well known effectors of small GTPases. We have shown that PLDs (phospholipases D) and their product, PA (phosphatidic acid), belong to the regulators of the secretory pathway in plants. We have also shown that specific NOXs (NADPH oxidases) producing

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Septiani, Mutiara, Diba Grace Auliya, and Risdiana Risdiana. "Direct Comparison between Ring-Opening Polymerization and Hydrolysis-Condensation Methods in the Synthesis of Polydimethylsiloxane as a Vitreous Substitute: A Systematic Literature Review." Trends in Sciences 22, no. 7 (2025): 9668. https://doi.org/10.48048/tis.2025.9668.

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Polydimethylsiloxane (PDMS) is a polymer with outstanding biocompatibility, chemical stability, gas permeability, and optical clarity properties. It is suitable for various applications, including as a vitreous substitute in retinal surgery. PDMS provides optical stability and transparency, essential for maintaining adhesion between the retina and the retinal pigment epithelium. The main methods for synthesizing PDMS are ring-opening polymerization (ROP) and hydrolysis-condensation, both of which produce PDMS with a wide range of properties that can be tailored by adjusting the synthesis param

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Jiang, Huiyan, Shaojie Li, and Siqi Li. "Registration-Based Organ Positioning and Joint Segmentation Method for Liver and Tumor Segmentation." BioMed Research International 2018 (September 24, 2018): 1–11. http://dx.doi.org/10.1155/2018/8536854.

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The automated segmentation of liver and tumor from CT images is of great importance in medical diagnoses and clinical treatment. However, accurate and automatic segmentation of liver and tumor is generally complicated due to the complex anatomical structures and low contrast. This paper proposes a registration-based organ positioning (ROP) and joint segmentation method for liver and tumor segmentation from CT images. First, a ROP method is developed to obtain liver’s bounding box accurately and efficiently. Second, a joint segmentation method based on fuzzy c-means (FCM) and extreme learning m

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Nifant'ev, Ilya E., Andrey V. Shlyakhtin, Vladimir V. Bagrov, et al. "Cyclic ethylene phosphates with (CH₂)_nCOOR and CH₂CONMe₂ substituents: synthesis and mechanistic insights of diverse reactivity in aryloxy-Mg complex-catalyzed (co)polymerization." Polymer Chemistry 12, no. 47 (2021): 6937–51. http://dx.doi.org/10.1039/d1py01277k.

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Firsova, V. V., A. V. Tereshchenko, I. G. Trifanenkova, Y. A. Sidorova, and A. A. Vydrina. "The first experience of navigation laser retinal coagulation for active retinopathy of prematurity." Modern technologies in ophtalmology, no. 3 (June 1, 2022): 176–80. http://dx.doi.org/10.25276/2312-4911-2022-3-176-180.

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Purpose is to demonstrate the first experience of the automated navigation system “Navilas” using in the treatment of active stages of retinopathy of prematurity (ROP) in the Kaluga branch of “Eye Microsurgery” complex. Material and methods. Transpupillary retinal laser coagulation (RLC) using the “Navilas 577s” navigation system (OD-OS, Germany) was performed in 5 premature infants with an unfavorable type of stages 2nd and 3rd of active ROP. The postconceptual age (PCA) at the time of treatment was 34–37 weeks. Body weight at birth – from 900 to 1900 g, gestation age – 27–33 weeks. Results.

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Gao, Jin-Peng, Peng Xu, Mingxing Wang, et al. "Nod factor receptor complex phosphorylates GmGEF2 to stimulate ROP signaling during nodulation." Current Biology 31, no. 16 (2021): 3538–50. http://dx.doi.org/10.1016/j.cub.2021.06.011.

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Pshenichnov, M. V., O. V. Kolenko, V. V. Egorov, and E. L. Sorokin. "Visual Functions in Children in Remote Postoperative Period after Laser Treatment of Threshold Stages of Retinopathy of Prematurity." Ophthalmology in Russia 15, no. 2S (2018): 18–23. http://dx.doi.org/10.18008/1816-5095-2018-2s-18-23.

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Purpose.Analysis of visual functions in children in remote postoperative period after laser coagulation (LC) of threshold stages of retinopathy of prematurity (ROP).Patients and methods. In 2017, we selected and investigated 18 children, who previously had an LC of threshold stages of ROP in 2008–2009 in the Khabarovsk branch of the S.N. Fyodorov State Institution Eye Microsurgery Complex (continuous sampling method). There were 5 boys and 13 girls aged from 8 to 9 years at the time of LC. Anterior and posterior eye segments of the eyes (biomicroscopy, ophthalmoscopy), visual acuity, clinical

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Kurysheva, Natalia Ivanovna, and Lyudmila Vyacheslavovna Lepeshkina. "Selective Laser Trabeculoplasty Protects Glaucoma Progression in the Initial Primary Open-Angle Glaucoma and Angle-Closure Glaucoma after Laser Peripheral Iridotomy in the Long Term." BioMed Research International 2019 (December 21, 2019): 1–10. http://dx.doi.org/10.1155/2019/4519412.

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Purpose. To compare the ability of SLT in preventing glaucoma progression in the initial primary angle-closure glaucoma (PACG) after laser peripheral iridotomy and primary open-angle glaucoma (POAG) in the long term. Methods. 60 patients with the initial stage of PACG after laser peripheral iridotomy and 64 initial POAG patients were recruited in a prospective study. Complete success of selective laser trabeculoplasty (SLT) was defined as a 20% intraocular pressure (IOP) reduction with topical hypotensive medications without any hypotensive intervention. Pre-SLT rate of progression and post-SL

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