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Surgical management with intentional replantation on a tooth with palato-radicular groove
Forero-Lopez, Jorge,Gamboa-Martinez, Luis,Pico-Porras, Laura,Nino-Barrera, Javier Laureano The Korean Academy of Conservative Dentistry 2015 Restorative Dentistry & Endodontics Vol.40 No.2
A palato-radicular groove (PRG) is a developmental anomaly primarily found in the maxillary lateral incisors. It is a potential communication path between the root canal and the periodontium that decreases the survival prognosis of the affected tooth, therefore compromising the stability of the dental structure in the oral cavity. The aim of this case report is to present an original technique where a PRG was treated by means of intracanal disinfection, PRG sealing with glass ionomer, replantation with intentional horizontal 180 degree rotation of the tooth, and an aesthetic veneer placed to provide adequate tooth morphology. The clinical and biological benefits of this novel technique are presented and discussed.
Surgical management with intentional replantation on a tooth with palato-radicular groove
Jorge Forero-López,Luis Gamboa-Martínez,Laura Pico-Porras,Javier Laureano Niño-Barrera 대한치과보존학회 2015 Restorative Dentistry & Endodontics Vol.40 No.2
A palato-radicular groove (PRG) is a developmental anomaly primarily found in the maxillary lateral incisors. It is a potential communication path between the root canal and the periodontium that decreases the survival prognosis of the affected tooth, therefore compromising the stability of the dental structure in the oral cavity. The aim of this case report is to present an original technique where a PRG was treated by means of intracanal disinfection, PRG sealing with glass ionomer, replantation with intentional horizontal 180 degree rotation of the tooth, and an aesthetic veneer placed to provide adequate tooth morphology. The clinical and biological benefits of this novel technique are presented and discussed.
Skeletal muscle energetics in patients with moderate to advanced kidney disease
Ertuglu Lale,Yildiz Abdulmecit,Gamboa Jorge,Ikizler T. Alp 대한신장학회 2022 Kidney Research and Clinical Practice Vol.41 No.1
Sarcopenia, defined as decrease in muscle function and mass, is common in patients with moderate to advanced chronic kidney disease (CKD) and is associated with poor clinical outcomes. Muscle mitochondrial dysfunction is proposed as one of the mechanisms underlying sarcopenia. Patients with moderate to advanced CKD have decreased muscle mitochondrial content and oxidative capacity along with suppressed activity of various mitochondrial enzymes such as mitochondrial electron transport chain complexes and pyruvate dehydrogenase, leading to impaired energy production. Other mitochondrial abnormalities found in this population include defective beta-oxidation of fatty acids and mitochondrial DNA mutations. These changes are noticeable from the early stages of CKD and correlate with severity of the disease. Damage induced by uremic toxins, oxidative stress, and systemic inflammation has been implicated in the development of mitochondrial dysfunction in CKD patients. Given that mitochondrial function is an important determinant of physical activity and performance, its modulation is a potential therapeutic target for sarcopenia in patients with kidney disease. Coenzyme Q, nicotinamide, and cardiolipin-targeted peptides have been tested as therapeutic interventions in early studies. Aerobic exercise, a well-established strategy to improve muscle function and mass in healthy adults, is not as effective in patients with advanced kidney disease. This might be due to reduced expression or impaired activation of PGC1-α, the master regulator of mitochondrial biogenesis. Further studies are needed to broaden our understanding of the pathogenesis of mitochondrial dysfunction and to develop mitochondrial-targeted therapies for prevention and treatment of sarcopenia in patients with CKD.
The Effect of Class times on the Academic Performance of Students in Mathematics
Hector Manaligod,Veronica R. Gamboa,Norman G. Lee,Lamberto Ongkingco, Jr. ASCONS 2021 IJASC Vol.3 No.3
Background/Objectives: This study examined if there a significant difference in math scores between the morning and afternoon class sections of first-year undergraduate game development students in mathematics. Methods/Statistical analysis: This experimental study had a population of an unpaired group composed of a morning and an afternoon class time. The i-Ready® Online Mathematics Assessment by Curriculum Associates was used to measure the math scores of each group proctored by the researchers and analyzed using Levine’s test (t-test) and Mann-Whitney U test. Findings: The results of the study show that there is no significant difference in math scores between the morning and the afternoon class times. Improvements/Applications: For future studies, the researchers aim to determine the math scores of the morning and afternoon class times of the different year undergraduate levels.
César Vargas-Segura,Emmanuel López-Gamboa,Emanuel Araya-Valverde,Marta Valdez-Melara,Andrés Gatica-Arias 한국작물학회 2019 Journal of crop science and biotechnology Vol.22 No.5
Coffee (Coffea arabica L.) is threatened by biotic and abiotic stresses. Nevertheless, the breeding of Arabica coffee is restricted due to its low genetic diversity. Crop improvement via mutagenesis represents an alternative for increasing genetic variability and facilitating breeding. In this sense, coffee seeds cv. Catuaí were treated for 8 h with a solution of sodium azide (NaN3) (0, 50, 75, 100, and 125 mM) and ethyl methane sulfonate (EMS) (0, 80, 160, 240, 320, and 400 mM). The genetic variability induced in coffee plants after mutagenic treatment with sodium azide was determined by RAPD and AFLP analyses. As the concentration of applied NaN3 and EMS increased, the germination, seedling height, and root length decreased. The LD50 values for NaN3 and EMS were between 50-75 mM and 160-240 mM, respectively. For the 12 RAPD primers evaluated, a total of 46 fragments were obtained of which 34 were polymorphic bands (74%). The amplification with six AFLP selective primer combinations allowed the identification of 36 polymorphisms (17.8%). The analysis revealed that both NaN3 and EMS induced variability within the DNA regions amplified with AFLP and RAPD markers. Finally, under field conditions, significant differences were noticed with respect to plant height, number of nodes in the orthotropic stem, and number of branches of the M1 mutant (NaN3-treated) plants compared to the non-mutant plants. Optimal conditions for NaN3 and EMS mutagenesis using seeds were determined and the optimized conditions have been used to generate a NaN3 mutant M1 coffee var. Catuaí population.
Machine Learning for Management in Software-defined Networks: A Systematic Literature Review
Andres J. Aparcana-Tasayco,Javier Gamboa-Cruzado 대한전자공학회 2022 IEIE Transactions on Smart Processing & Computing Vol.11 No.6
Software-Defined Networking (SDN) has emerged as a new paradigm for managing data networks, and Machine Learning (ML) techniques have become relevant in the scientific community to solve management problems. Research on using these two variables has increased in recent years. Therefore, a systematic literature review based on Kitchenham’s guidelines and PRISMA guidelines is necessary. The review included publications from between 2016 and 2021. The study recorded 21,743 primary articles, and after applying rigorous exclusion and quality criteria, 81 articles were obtained. The results show the most productive authors, such as Julong, as well as the relationships between the most productive authors and the keywords “SDN” and “Machine Learning,” which are the most used among researchers.