bluuebunny/crossref_metadata_2025 huggingface dataset:
A SEMI-ANALYTIC APPROACH FOR SOLVING FISHER’S REACTION-DIFFUSION EQUATION BY METHOD OF LINES USING REPRODUCING KERNEL HILBERT SPACE METHOD
Authors: Patel Gautam , Patel Kaushal
Published: December 2022

Many nonlinear systems are described with the nonlinear Fisher’s reaction-diffusion equation. The purpose of this work is to propose the method of lines to find out the solution of the Fisher’s reaction-diffusion equation in one dimension with quadratic and cubic nonlinearity using reproducing kernel Hilbert space method. In this method, the partial derivatives of the space variable are discretized to get a system of ODEs in the time variable and then solve the system of ODEs using reproducing kernel Hilbert space method. Four test examples are given to demonstrate the technique’s efficacy and applicability. The results are compared with the exact and existing numerical solutions by calculating the error norms L2 and L∞ at various time levels. It has been discovered that the recommended approach is not only simple to use, but also produces superior outcomes
GENERALIZED HERMITE-FEJÉR INTERPOLATION BY THE FUN
Authors: Bahadur Swarnima , Iqram Sameera
Published: December 2022

In this research paper, we consider generalized Hermite-Fejer interpolation on the nodes, which are obtained by vertically projected zeros of the (1 + x)P(α,β)n (x) on the unit circle, where P(α,β)n (x) stands for Jacobi polynomial. Explicitly representing the interpolatory polynomial as well as establishment of convergence theorem are the key highlights of this paper.
FUZZY OPTIMIZATION AND gH- SYMMETRICALLY DERIVATIVE OF FUZZY FUNCTIONS
Authors: Rani Mathew Edithstine , Sebastian Lovelymol
Published: December 2022

In this paper, we introduce a new concept called Algebra of generalized Hukuhara symmetrically (gHs) differentiable fuzzy function. We specifically state the prerequisites for the gHs differentiability of the product and composition of a differentiable real function and a gHs differentiable fuzzy function, as well as the gHs differentiability of the sum of two gHs differentiable fuzzy functions.
UNSTEADY STAGNATION FLOW OF VISCOELASTIC FLUID THROUGH POROUS MEDIUM OVER STRETCHING/SHRINKING SURFACE USING UCM MODEL
Authors: Choudhary Sushila , Sharma Anil , Choudhary Prasun , Kumar Suresh
Published: December 2022

In the present paper, Upper-Convected Maxwell model is used for formulation of the problem of two-dimensional unsteady stagnation point flow of viscoelastic fluid which passes through a porous medium over a stretching/shrinking surface. The effect of magnetic field on flow is also considered in the presence of time dependent heat source/sink. Using similarity parameters, we convert the governing non-linear system of partial differential equations into non dimensional system of ordinary differential equations. This system of equations is solved by using Runge-Kutta fourth order method with shooting technique. Effect of different physical parameters e.g. Maxwell parameter(β), permeability parameter(K), unsteadiness parameter(γ), velocity ratio parameter(λ) etc. on flow and heat transfer characteristics are analyzed and discussed graphically. It is observed that for some values of λ, dual solution also exists for both velocity and temperature, and existence and uniqueness of solution also depends upon unsteadiness parameter. For the validation of present study, the results are compared to previous investigations and found in good agreement.
Đặc điểm cảnh quan tự nhiên - nhân sinh tỉnh Phú Yên
Authors: Nguyen Dang Hoi , Ngo Trung Dung , Dang Thi Ngoc
Published: December 2022

Structure, differentiation and dynamics are basic attributes of landscape in general, natural-anthropogenic landscape in particular. Structural features and dynamics of landscape show the interaction of the forming components as well as the landscape's response to external factors. Therefore, studying the structure and dynamics allows to forecast changes, self-adjustment and development trends of natural-anthropogenic landscape. Phu Yen is a territory with a high differentiation of natural and anthropogenic conditions, which is the basis for the formation of a system of natural-anthropogenic landscapes with high diversity, including 1 system, 1 subsystem, 3 classes, 5 subclasses, 9 types and 132 kinds of landscape. The highest diversity belongs to the landscape class of plain - valley with 2 subclasses, 4 types and 68 kinds. The mountain landscape class also has a high degree of differentiation of the low mountain and hill subclass with 2 types, 44 kinds; The subclass of mountain landscape has low diversity, with 2 types, 19 kinds. Landscape groups of planted forests and annual agricultural crops dominate the area and high diversity. The seasonal dynamics of Phu Yen's natural-anthropogenic landscapes are clearly reflected in the seasonal rhythms of the natural elements of the climate, hydrological and forest vegetation components and the seasonality of human activities, especially the seasonality of agricultural landscapes.
Substrate and habitat preferences of two common species of Microporus p. Beauv. (Basidiomycota, Polyporales) in tropical forests of Vietnam
Authors: Popov E. S. , Alexandrova A. V. , Antonov E. A.
Published: December 2022

We analyzed niche differentiation of closely related wood-decaying polypores Microporus affinis and M. xanthopus in tropical forests of Vietnam. The statistical analysis confirms differences between M. affinis and M. xanthopus regarding preferable substrate size, average habitat elevation above the sea level, and degree of substrate decomposition, while there was no significant difference between two species in preferable level of habitat insolation.
Nghiên cứu đa dạng vi khuẩn trong trầm tích biển tại quần đảo Trường Sa bằng phương pháp truyền thống kết hợp kỹ thuật điện di biến tính
Authors: Do Thi Tuyen
Published: December 2022

The denaturing gradient gel electrophoresis (DGGE) is an effective culture-independent technique for assessing diversity of microbial communities. In this study, the PCR-DGGE technique was applied for analyzing the diversity of bacterial communities in marine sediment in the Truong Sa archipelago (Spratly Islands), Vietnam, and a comparison with cultivable bacterial fraction was performed. Three sediment samples taken from different depths were used in the study. A total of 17 bacterial strains were isolated and divided into 6 groups based on their colony and cell morphologies. Comparative analyses of nearly full-length 16S rDNA sequences retrieved from six representative strains of these morphologically distinguished groups indicated that they were most closely related to Bacillus amyloliquefaciens, Bacillus filamentosus, Bacillus endophyticus, Bacillus licheniformis, Pseudomonas balearica, and Raoultella ornithinolytica. The PCR-DGGE analyses carried out with the three sediment samples showed relatively diverse bacterial communities with 9 distinct bands, 6 of which were related to the isolated representatives, whereas the other three were identified as Vibrio proteolyticus, Priestia filamentosa, and Clostridium halophilum. Thus, by applying the PCR-DGGE technique, more thorough information on bacterial communities in the sediment of Truong Sa archipelago could be elucidated, providing useful information for further studies on the conservation and utilization of microbial resources in this ecosystem.
Biến tính một số loại vải dùng trong quân đội bằng các polyme methacrylat siêu kỵ nước
Authors: Le Duc Manh , Klimov V. V. , Nguyen Chi Cuong , Dinh Thi Van , Hoang Duc Quang
Published: December 2022

Herein, the dyed and undyed cotton fabrics were modified with methacrylate to achieve superhydrophobicity. In this regard, two methacrylate copolymers, poly(GMA-co-LMA) and poly(GMA-co-3F) was first synthesized via radical copolymerization and then were used to coat onto these cotton fabric surfaces by immersion technique in the combination with heating at 140℃. The molecular weight of these resultant copolymers was 7.5 x 104 and 4.5 x 104 daltons respectively and the polymer dispersion index (PDI) was around 2. Under the Data physic’s OCA - 20ES device, the water contact angle of modified fabrics with poly(GMA-co-LMA) or with poly(GMA-co-3F) was in range 162°-165°, revealing the superhydrophobic of the resultant fabric. Compared to the as-prepared cotton fabrics, there were effectively no changes in color and breathability after modification, promoting the potential application in the apparel industry.
PENINGKATAN MOTIVASI BELAJAR SISWA DENGAN PENERAPAN MODEL PEMBELAJARAN STUDENT FACILITATOR AND EXPLAINING PADA MATA PELAJARAN IPA DI KELAS IV SD NEGERI 200101 PADANGSIDIMPUAN T.A. 2021/2022
Authors: Rambe Syahriwani
Published: December 2022

Tujuan penelitian ini adalah untuk meningkatkan motivasi belajar siswa pada mata pelajaran IPA melalui penerapan model pembelajaran student facilitator and explaining. Jenis penelitian ini adalah penelitian tindakan kelas (PTK) yang mengarah dengan tahapan-tahapan pelaksanaan meliputi : perencanaan, pelaksanaan, tindakan, observasi/pengamatan, evaluasi dan refleksi. Penelitian tindakan kelas ini dilaksanakan pada kelas IV di SD Negeri 200101 Padangsidimpuan T.A 2021/2022, dan waktu penelitian dilakukan selama dua bulan. Subjek penelitian tindakan kelas ini adalah murid-murid kelas IV SD Negeri 200101 Padangsidimpuan T.A 2021/2022 yang berjumlah 25 orang. Sedangkan objek penelitian ini adalah penggunaan model pembelajaran student facilitator and explaining pada mata pelajaran IPA dapat meningkatkan motivasi belajar siswa. Adapun variabel penelitian ini yaitu motivasi belajar dan model pembelajaran student facilitator and explaining. Hasil penelitian pada siklus I pertemuan I rata-rata klasikal 80 % dengan kriteria tinggi dan pada siklus II pertemuan II sebesar 92 % yaitu dengan kriteria sangat meningkat atau tinggi, hal ini sudah terlihat peningkatan dan sudah mencapai kriteria yang diharapkan
Asuhan Keperawatan Pada Tn.S dan Tn.A Dengan Diabetes Mellitus Diruang Penyakit Dalam Di RSU Kota Tangerang Selatan
Authors: Ridlo Muhamad
Published: December 2022

Latar Belakang: Diabetes mellitus merupakan salah satu masalah di dunia yang saat ini semakin meningkat karena ketidakstabilan kadar gula dalam darah yang disebabkan kerusakan pada sekresi insulin, kerja insulin atau keduanya. Tujuan: Untuk memperoleh gambaran dan mampu melakukan asuhan keperawatan pada pasien dengan Diabetes Mellitus. Metode: Desain penelitian menggunakan deskriptif analitik dengan pendekatan studi kasus. Sampel yang digunakan pada studi kasus ini yaitu Tn. S dan Tn. A dengan diagnosis diabetes mellitus. Data yang didapatkan menggunakan pedoman asuhan keperawatan medikal bedah. Hasil: Setelah dilakukan asuhan keperawatan selama 3 x 24 jam pada Tn. S didapatkan hasil nyeri kronis sudah teratasi karena skala nyeri menurun menjadi 1, ketidakstabilan kadar glukosa darah teratasi sebagian karna hasil GDS masih tinggi, risiko infeksi teratasi sebgian karena masih terdapat kemerahan pada luka, gangguan mobilitas fisik teratasi sebagian karena pasien masih kesulitan dalam bergerak. Sedangkan pada Tn. A setelah dilakukan asuhan keperawatan selama 3 x 24 jam didapatkan hasil teratasi semua pada 3 diagnosa yaitu ketidakstabilan kadar glukosa darah, nausea, gangguan pola tidur karena terdapat perubahan yang signifikan. Kesimpulan: Berdasarkan hasil diatas bahwa penderita diabetes mellitus yang mengalami peningkatan kadar gula dalam darah yang disebabkan oleh ketidakpatuhanya pola makan dan ketidakpatuhan dalam pengobatan maka perlunya peran perawat dalam memberikan edukasi kesehatan dengan menganjurkan makanan yang sehat dan mengajarkan cara perawatan mandiri.
Características clínicas y moleculares de pacientes con distrofia muscular de Duchenne y de Becker en el Hospital Nacional Guillermo Almenara Irigoyen, Perú, 1997-2007
Authors: Abarca-Barriga Hugo Hernán
Published: December 2022

Introducción: Las distrofias musculares de Duchenne (DMD) y Becker (DMB) son enfermedades de herencia recesiva ligada al cromosoma X, por variantes en el gen de la distrofina. En Perú, existen estudios en población pediátrica sobre DMD/DMB. Objetivo: Describir las características clínicas y moleculares de pacientes con distrofia muscular de Duchenne y de Becker en el Hospital Nacional Guillermo Almenara Irigoyen, 1997-2007. Metodología: Estudio observacional, descriptivo y transversal. Se revisaron historias clínicas de pacientes admitidos en el servicio de Citogenética y Citopatología. Se diseño una ficha de recolección para recoger información de datos sociodemográficos edad y sexo, y la segunda sección de datos clínicos y moleculares. Para los análisis estadísticos se usó el paquete SPSS v.13. Resultados: De las 93 historias clínicas de pacientes con sospecha diagnóstica de distrofias musculares. Se encontró que 40 pacientes (43%) tenían diagnóstico clínico de DMD. De los cuales, 18 pacientes tenían un estudio molecular de mPCR positivo de deleción en uno o más exones del gen de la distrofina. En los pacientes con deleción de distrofina, casi todos fueron del sexo masculino y la edad promedio de diagnóstico fue de 6,5 ± 1,63 años. Conclusion: Se encontro que aproximadamente cuatro de cada diez de los pacientes con distrofias tuvieron diagnostico clinico de DMD. En el estudio molecular por mPC , casi la mitad tuvieron resultado positivo de deleción de uno o más exones del gen DMD.
Factores de riesgo asociados a la sobrevida de los pacientes sometidos a cirugía cardíaca con circulación extracorpórea en el Instituto Nacional de Salud del Niño, Perú
Authors: Silva Rivera Eduardo Wilfredo
Published: December 2022

Introducción: El cuadro clínico de los pacientes con cirugía cardiaca con circulación extracorpórea (CEC) comprende una serie de signos y síntomas causados por la disfunción de órganos asociadas al gasto cardiaco, las cuales aumentan la probabilidad de muerte. Objetivo: Identificar los factores asociados a la sobrevida a mediano plazo de los pacientes sometidos a cirugía cardiaca con circulación extracorpórea en el Instituto Nacional de Salud del Niño de Lima-Perú. Materiales y métodos: Este estudio observacional analizó una cohorte retrospectiva 1028 niños intervenidos quirúrgicamente entre el año 2001 y 2010. La sobrevida se estimó mediante curvas de Kaplan-Meier; para el análisis de las variables consideradas factores de riesgo de mortalidad a mediano plazo se usó la regresión de Cox. Resultados: De los antecedentes quirúrgicos preoperatorios, la cirugía de urgencia (100%), congénitas (99,4%) y cianóticas (68,8%) fueron de mayor prevalencia en los menores de un año. En las características intraoperatorias, el tiempo de CEC fue de 90,5(60-146,5) minutos para los menores de un año y fue mayor al resto de grupos etarios. Después de la cirugía, las reoperaciones se presentaron en un 3,2 %, 10,7% de reintubaciones y la media de estancia en UCI y la hospitalaria fue del 6 ± 10,4 y 30,7 ± 37 días, respectivamente. La sobrevida global evidenció que los pacientes operados con CEC presentaron una tasa de mortalidad menor al 10%. Cuando se observó la sobrevida en subgrupos de edad, se observó que los pacientes menores de un año presentan mayor tasa de mortalidad, seguidos por los mayores de 5 años. Conclusión: La sobrevida fue muy alta a mediano plazo. El bajo gasto cardiaco es un factor asociado a mortalidad después de la cirugía cardiaca, lo cual implica un monitoreo en este tipo de pacientes.
Resiliencia y síndrome de desgaste profesional en personal de enfermería del Instituto Nacional de Salud del Niño, Lima, 2019
Authors: Bancayán-Martínez Felix J. , Romero-Palomino Delmer
Published: December 2022

Introducción: Las enfermeras que laboran en el servicio de emergencia y cuidados críticos están expuestas a entornos estresantes siendo vulnerables al síndrome de desgaste profesional. Objetivo: Determinar la relación entre la resiliencia y el síndrome de desgaste profesional en enfermeras del área de servicios críticos del Instituto Nacional de Salud del Niño, Lima, 2019. Metodología: Estudio observacional y transversal realizado en enfermeras que laboran en el área de servicios críticos. Se usaron los instrumentos Maslach Burnout Inventory y la Escala de Resiliencia de Wagnild y Young. Para el análisis estadístico, se utilizó el procedimiento de las ecuaciones estructurales – SEM, por medio del ajuste de máxima verosimilitud, para lograr obtener las cargas factoriales entre las variables. Resultados: Participaron 181 enfermeras, el 96,1% fueron mujeres y el 59,1% tenían edades entre los 41 a 60 años. El 11,6% presentó un nivel bajo de Resiliencia y el 44,2% un nivel alto del Síndrome de desgaste profesional. En el análisis multivariable con respecto a los puntajes de resiliencia y síndrome de desgaste profesional, el coeficiente de regresión fue: β=-0,19; p=0,039, lo cual explica la Resiliencia en 3,6% de varianza al Síndrome de desgaste profesional. Conclusión: Cerca de la mitad del personal de enfermería presentó un alto nivel de Síndrome de desgaste profesional. Asimismo, encontramos que la relación entre la Resiliencia y Síndrome de desgaste profesional fue negativa y estadísticamente significativa, de manera que, a menor nivel de la Resiliencia, mayor el nivel de Síndrome de desgaste profesional del personal de enfermería.
Performance of a commercial hot water boiler
Authors: Park Cheol , Liu S
Published: December 2022

In responding to ASHRAE SPC 155P's interest and to provide additional evidence on the envisioned linear relationship between output and input of a boiler under part load conditions, the National Institute of Standards and Technology undertook to conduct a series of computer simulations utilizing a revised version of a computer simulation program, DEPAB2, which was developed previously by NIST for commercial fire-tube steam boilers. The computer program was modified so that it can be used to simulate the operations of a commercial fire tube hot water boiler, and actual boiler specification data from a leading boiler manufacturer was obtained and used as input data to the program for the simulation study. In this paper, the computer model of a commercial hot water boiler and the actual boiler specification are described. Full and part-load performance of the simulated, commercial hot water boiler is presented. A good correlation between output energy and input energy is found. Based upon the correlationship, a suggestion is made to reduce experimental burden in testing the performance of commercial boilers.
Remission in pediatric Graves’ disease treated with antithyroid drug and the risk factors associated with relapse
Authors: Wong Tsz Wai Catherine , Wong Man Yee Shirley
Published: December 2022

Purpose: To evaluate the characteristics and frequency of remission in pediatric patients with Graves’ disease (GD) treated with antithyroid drug (ATD) and to identify factors that may be associated with relapse.Methods: Medical records of patients younger than 19 years who presented to the Department of Pediatrics of Queen Elizabeth Hospital Hong Kong with newly diagnosed GD from 1st January 2007 to 31st December 2017 were retrospectively reviewed. Remission was defined as euthyroidism for 12 months or more after discontinuation of ATD treatment and no relapses during the follow-up period. Patients who successfully achieved remission were compared to those who suffered relapse. Factors that may predict occurrence of relapse after ATD treatments were studied, and their odds ratios (ORs) were calculated.Results: A total of 101 patients was included in this study. Eighty-one patients completed one course of ATD. Eighteen patients (17.8%) successfully achieved remission, and 58 patients (57.4%) experienced relapse after discontinuation of ATD. The remission group received a significantly longer course of ATD therapy than the relapse group (median, 28 months; interquartile range [IQR], 18–48 months in remission group vs. median, 21 months; IQR, 17–26; p=0.024). The OR for relapse was 0.971 (95% confidence interval [CI], 0.946–0.997) in univariate analysis and remained significant after adjustments in the multivariate regression model (OR, 0.961; 95% CI, 0.933–0.989; p=0.008).Conclusion: The remission rate in pediatric patients with GD treated with ATD was low. A longer ATD course was associated with a greater chance of remission in this population.
CONTACT WITH HARMFUL CHEMICALS AND CANCER
Authors: TOPAL CANBAZ Gamze
Published: December 2022

Problems such as changes in people's lifestyles and standards and environmental pollution have seriously affected human health. It is known that many substances that people eat, drink, use in daily life and are exposed to are harmful to human health. At the beginning of these substances are the substances called “chemicals”. The use of these chemicals has accelerated with the development of industry and technology. It has been determined that many chemicals, which were previously considered harmless, cause diseases, irreversible damages and deterioration of the genetic structure over time.

Cancer is one of the diseases caused by these chemicals. In the cancer statistics of 2020, it has been reported that there are 201 cases of cancer in every 100 thousand people in the world. Despite all the successes in the diagnosis, treatment and prevention of cancer in recent years; unfortunately, the war waged by scientists against cancer has not been fully won yet. In this study, the relationship between cancer and chemicals that are frequently used in daily life without being aware of it are discussed.
Sleep-isolated trichotillomania as an ictal symptom of complex partial seizure in a 12-year-old girl: a case report
Authors: BOZOK Beyza , ÖZDEMİR Öykü , UZUN CİCEK Ayla , AKSOY Halil Ural , UCUZ İlknur , ABANOZ Elif
Published: December 2022

Sleep-isolated trichotillomania (TTM) is the unconscious and automatic pulling of one's hair only while sleeping. In previous case reports, sleep-isolated TTM has been categorized as a sleep-related disorder or a sleep-related dissociative disorder in case reports, and a treatment strategy in this direction has been implemented. However, to our knowledge, no reports have been published describing hair pulling during sleep as a symptom of epilepsy and its pharmacological treatment. In this case report, we present the hair-pulling behavior during sleep as an ictal manifestation of complex partial seizure in a 12-year-old girl and its successful treatment with levetiracetam. We suggest that epilepsy should be suspected in addition to parasomnias and sleep-related dissociative disorder in the differential diagnosis, especially in cases presenting with isolated TTM behavior during sleep.
A New "sounding image" of the Piano in the Domestic "Female" Vocal Cycle of the 1960s and 1970s
Authors: Shkirtil' Lyudmila Vyacheslavovna
Published: December 2022

The subject of the study is a new "sounding image" of the piano in the chamber-vocal cycles of Russian composers of the 1960s and 1970s. The chosen perspective is "female" vocal cycles, i.e., those that should be performed exclusively by female voices. The author examines the piano parts in the vocal cycles of B. Tishchenko, D. Shostakovich, A. Knaifel, A. Schnittke, E. Denisov, G. Banshchikov, V. Gavrilin and other Russian masters, reveals the new, original, fresh that they brought to the music of piano accompaniment in the wake of the Khrushchev "thaw". First of all, in the field of texture, rhythm, avant-garde performance techniques, timbral-register organization of musical fabric. The main conclusion of the study is the idea that the fruitful synthesis of the achievements of the European avant-garde and domestic experience led to the emergence of a new "sounding image" of the piano in Soviet music of the 1960s, which was fully in demand in the vocal cycle. Each of the composers followed his own unique path in art, individually refracted tradition, but the overall panorama of musical art, chamber vocal creativity turned out to be rich and saturated with outstanding achievements. The novelty of the study lies in the fact that the piano accompaniment of the Russian vocal cycle was first subjected to a separate and fairly broad analysis.
Inducible lncRNA transgenic mice reveal continual role of HOTAIR in promoting breast cancer metastasis
Authors: Ma Qing , Yang Liuyi , Tolentino Karen , Wang Guiping , Zhao Yang , Litzenburger Ulrike M , Shi Quanming , Zhu Lin , Yang Chen , Jiao Huiyuan , Zhang Feng , Li Rui , Tsai Miao-Chih , Chen Jun-An , Lai Ian , Zeng Hong , Li Lingjie , Chang Howard Y
Published: December 2022

HOTAIR is a 2.2-kb long noncoding RNA (lncRNA) whose dysregulation has been linked to oncogenesis, defects in pattern formation during early development, and irregularities during the process of epithelial-to-mesenchymal transition (EMT). However, the oncogenic transformation determined by HOTAIR in vivo and its impact on chromatin dynamics are incompletely understood. Here, we generate a transgenic mouse model with doxycycline-inducible expression of human HOTAIR in the context of the MMTV-PyMT breast cancer-prone background to systematically interrogate the cellular mechanisms by which human HOTAIR lncRNA acts to promote breast cancer progression. We show that sustained high levels of HOTAIR over time increased breast metastatic capacity and invasiveness in breast cancer cells, promoting migration and subsequent metastasis to the lung. Subsequent withdrawal of HOTAIR overexpression reverted the metastatic phenotype, indicating oncogenic lncRNA addiction. Furthermore, HOTAIR overexpression altered both the cellular transcriptome and chromatin accessibility landscape of multiple metastasis-associated genes and promoted EMT. These alterations are abrogated within several cell cycles after HOTAIR expression is reverted to basal levels, indicating an erasable lncRNA-associated epigenetic memory. These results suggest that a continual role for HOTAIR in programming a metastatic gene regulatory program. Targeting HOTAIR lncRNA may potentially serve as a therapeutic strategy to ameliorate breast cancer progression.
Clonally related, Notch-differentiated spinal neurons integrate into distinct circuits
Authors: Bello-Rojas Saul , Bagnall Martha W
Published: December 2022

Shared lineage has diverse effects on patterns of neuronal connectivity. In mammalian cortex, excitatory sister neurons assemble into shared microcircuits. In Drosophila, in contrast, sister neurons with different levels of Notch expression (NotchON/NotchOFF) develop distinct identities and diverge into separate circuits. Notch-differentiated sister neurons have been observed in vertebrate spinal cord and cerebellum, but whether they integrate into shared or distinct circuits remains unknown. Here, we evaluate how sister V2a (NotchOFF)/V2b (NotchON) neurons in the zebrafish integrate into spinal circuits. Using an in vivo labeling approach, we identified pairs of sister V2a/b neurons born from individual Vsx1+ progenitors and observed that they have somata in close proximity to each other and similar axonal trajectories. However, paired whole-cell electrophysiology and optogenetics revealed that sister V2a/b neurons receive input from distinct presynaptic sources, do not communicate with each other, and connect to largely distinct targets. These results resemble the divergent connectivity in Drosophila and represent the first evidence of Notch-differentiated circuit integration in a vertebrate system.
El plantacionoceno en el «desierto» argentino. Las aventuras de la China Iron como narrativa indisciplinada para la alteración de mundos
Authors:   Universidad de Buenos Aires-CONICET, Billi Noelia
Published: December 2022

De acuerdo con la formulación de Haraway y Tsing, el Plantacionoceno sería un modo de nombrar esta época que permitiría, con mayor especificidad que el Antropoceno, señalar las características del sistema mundial moderno. En este artículo revisamos las diferentes versiones del Antropoceno y el tipo de problemas que habilita (especialmente los de la escala y la agencia material). Luego nos abocamos a la emergencia de la noción de simbiosis como forma de hacer comunidad más allá de lo humano tal como aparece primero en Michel Serres y luego en Haraway, el marco ofrecido por la ecocrítica materialista y el modo en que el Plantacionoceno se justifica. Adoptando este enfoque, leemos las narrativas fundacionales de la identidad argentina como aquellas donde esta es figurada como la del varón valiente (primero un marginal y luego un héroe nacional) cuya tarea principal es borrar (material y simbólicamente) el legado indígena. Por último, abordamos la novela de Gabriela Cabezón Cámara, Las aventuras de la China Iron, donde el poema épico nacional de José Hernández, Martín Fierro, es totalmente re-escrito. A lo largo de esta indisciplinada narración de alteración de mundos, la plantación es transformada en una humildad no jerárquica que nos ubica en el umbral de un plantismo queer.
León Rozitchner y lo mitológico-político
Authors:   Universidad de Buenos Aires (Argentina), Yagüe Pedro
Published: December 2022

En el presente artículo me propongo recomponer la especificidad teórica del último período de la obra filosófica de León Rozitchner, allí donde aparece el problema de lo “mitológico-político”. A modo de introducción, comenzaremos haciendo referencia a la coyuntura histórica en la cual Rozitchner plantea este nuevo horizonte conceptual. En la primera parte del artículo, desarrollaré la noción de mater, categoría cardinal a partir de la cual se comprenden los distintos desplazamientos conceptuales que aparecen durante estos años. Una vez hecho esto, mostraré el modo en que Rozitchner concibe la noción histórica de mitología y su relación con lo político-social. Esto servirá como preámbulo conceptual para introducirnos luego en el modo en que, desde estas categorías, el filósofo argentino estudia al cristianismo entendido en clave mitológica y su vínculo con las relaciones sociales capitalistas. Allí la noción de terror aparecerá como una categoría clave para comprender el alcance subjetivo de la mitología cristiana.
Siguiendo la huella: Dibujando líneas en el suelo
Authors:   Universidad de Buenos Aires (Argentina), Fagioli Nicolás
Published: December 2022

Las reflexiones que conforman el presente artículo intentan brindar un aporte a la cuestión de la naturaleza y de la problemática medioambiental desde el punto de vista de lo que denominaremos una filosofía del suelo. Se emprenderá dicha tarea a través de los planteos de una serie de autores y autoras pertenecientes a la contemporaneidad filosófica, que se han preocupado, en distinta medida y de modos muy diferentes, por la problemática de la tierra o el suelo: Donna Haraway, Tim Ingold y Bruno Latour. Para esto, nos serviremos de una serie de elementos que extraeremos de la experiencia visual y táctil de las Líneas de Nazca, legado de nuestro pasado amerindio en el desierto peruano. El trabajo se dividirá en tres partes, dedicada cada una de ellas a explicitar ciertas reflexiones de los autores que puedan asociarse a una filosofía como la que pretendemos mentar. El enfoque priorizará los entrelazos entre los mismos y el desarrollo de elementos que nos permitan un entrecruzamiento de sus respectivas teorías.
Por una lingüística inespecífica: la inquietud ancestral de la voz
Authors:   IDH-Conicet- UNC (Argentina), Milone Gabriela
Published: December 2022

En este artículo abordamos la pregunta por la materia de la voz a partir de dos nociones centrales: articulación y ancestralidad, en el marco de la propuesta singular de una lingüística insumisa, imaginada, indisciplinar, inespecífica. Desde las reflexiones de Agamben, De Certeau, Derrida, Saussure y Zumthor, este texto propone abrir una zona de indagación que asume los riesgos de la ficción (Didi-Huberman) para habilitar interrogantes que no sólo expanden los horizontes disciplinares sino fundamentalmente discuten la pertenencia (humana/no humana) de la voz. Desde la hipótesis de que la voz es infinita (Agamben), discutimos la noción de articulación desde los postulados de Saussure y la lectura que hace Derrida de Rousseau. Con la idea de que la voz es un ancestro del futuro (Didi-Huberman y Coccia), abordamos la cuestión de la ancestralidad revisando algunos postulados de Brisset y Darwin. El propósito fundamental aquí no es sólo poner en cuestión las nociones mencionadas; también buscamos concluir con una evidencia: la necesidad de una indisciplina que sea permeable a la in-especie-ficidad de la voz.
Organomineral fertilizers potentiate Atlantic potato cultivation
Authors:   Universidade Federal de Uberlândia / Instituto de Ciências Agrárias (Brasil), Oliveira Roberta C. , Luz José Magno Q. ,   Universidade Federal de Uberlândia / Instituto de Ciências Agrárias (Brasil), Lana Regina Maria Q. ,   Universidade Federal de Uberlândia / Instituto de Ciências Agrárias (Brasil), Alves Gustavo O. ,   Universidade Federal de Uberlândia / Instituto de Ciências Agrárias (Brasil), Ferraz-Almeida Risely ,   Universidade de São Paulo / Departamento de Ciência do Solo (Brasil), Camargo Reginaldo ,   Universidade Federal de Uberlândia / Instituto de Ciências Agrárias (Brasil)
Published: December 2022

Analyses of potential sources and products that aim to balance nutrients in soil and plants; improve physical, mineral, and biological attributes of soil; and reduce environmental impacts require greater attention. Therefore, the aim of this study was to evaluate the agronomic efficiency of organomineral fertilizers (OMF) in Atlantic potato cultivar. The experimental design was a randomized complete block design (RCBD), with four treatments and six replicates. The treatments consisted of NPK mineral fertilizers (recommended according to soil analysis and nutritional crop requirements), as control, and NPK plus OMF according to composition and form of application (planting, ridging, and leaf), referred to as managements A and B, which indicate the amount of nutrients that the plants received. Therefore, treatments with OMF were designated as: P-OMF(A): organomineral fertilizer management (A) applied via planting furrow; PR-OMF(B): organomineral fertilizer management (B) applied via planting and ridging, and PR-OMF(B) + L-OMF(B): organomineral fertilizer management (B) applied via planting, ridging, and leaf application. The applications of P-OMF(A) and PR-OMF(B) + L-OMF(B) resulted in positive effects on Special Class production and total productivity of Atlantic potato tubers, which increase were between 12% and 16% and 11% to 15.5%, respectively. The application of PR-OMF(B) + L-OMF(B) improved their soluble solid content by 2.7% compared to the control (absence of OMF application). Therefore, organomineral fertilizers have the potential for improving the quantitative and qualitative attributes of potatoes.
Effect of silica fume and basalt fibers on the fracture parameters of magnesium phosphate cement incorporating fly ash
Authors:   Department of Civil Engineering, Maltepe University, Maltepe, Istanbul, (Türkiye), Onur Pehlivan Ahmet
Published: December 2022

Magnesium phosphate cements are implemented for several purposes demonstrating significant mechanical properties in limited durations. However, brittle behavior of this material needs utmost concern and tensile performance may be enhanced with the proper application of fibers increasing both ductility and energy absorption capacity. This research studies the effect of basalt fibers (BF) and silica fume (SF) on the fracture parameters of magnesium phosphate cement (MPC). MPC mortar mixtures were prepared with different SF (0, 5, 10%) and BF amounts (0, 0.5, 0.75, 1 % by wt.). Also fly ash was adopted with a constant ratio for all mixes. Compressive strength and splitting tensile strength results indicated that addition of SF into mixtures extensively developed the matrix structure and improvements were noted with the increasing SF content. The inclusion of BF enhanced the flexural behavior although there were significant improvements in the fracture energy as well as the double-K parameters. Improvements in the tensile capacity of specimens with high BF were prone to the amount of SF percentage such that inclusion of 1 % BF performed best with 10 % SF added mixtures. Load-CMOD (crack mouth opening displacement) curves obtained from notched three-point tests were given for all specimen series and parameters were calculated according to the double-K criterion. Addition of BF resulted in higher toughness values however presence of SF was very significant in establishing appreciable development in toughness values. Brittleness index was implemented to establish clear conclusions on the findings and best performance was seen for specimens with 10% SF and 1% BF.
An experimental study on the blast responses of hollow core concrete slabs to contact explosions
Authors:   Department of Civil Engineering, Firat University, Elazığ (Türkiye), Savaş Sedat , Bakir Dursun ,   Department of Civil Engineering, Firat University, Elazığ (Türkiye)
Published: December 2022

Measures taken against preventing damages in structures against explosive load are a popular matter of investigation among researchers. Generally, numerous studies were conducted on reinforcement materials for outer surfaces, reinforcement design, and utilizing fibers produced from various materials. In this study, a hollow-core slab was manufactured with concrete, which had a regular strength, and a design that discharged the explosive energy upon contact explosion via the hollow cores of the slabs and prevented the redirection of the explosive energy to the area below the slabs was investigated. Because the hollow-core slab in the study did not have any lateral reinforcement, the utilization of the tensile strength of the concrete proved advantageous. For this purpose, in the experimental tests of the study, contact explosions were conducted on hollow-core slabs with hollow diameters of 14 cm for each core. Before the explosion tests, the TNT equivalent of 910gr explosive was determined by performing the TNT equivalent tests. In the explosion tests of prepared hollow core concrete slabs, 125 gr, 250 gr, 375 gr, and 500 gr dynamites were used as the explosive materials. In conclusion, the explosive loads that the slabs could withstand were calculated and various slabs with distinctive hollow-core diameters were determined depending on the amount of the explosives.
Effects of mix-design variables on the workability, rheology and stability of self-consolidating concrete
Authors:   Izmir Institute of Technology, Civil Engineering Department, Urla, İzmir (Turkiye), Musa Alami Mohammad
Published: December 2022

This study investigates the effects of basic mix design variables such as water/cement ratio (w/c), slump flow, coarse-to-total aggregate ratio (CA/TA), and maximum aggregate size (Dmax) on the main characteristics of self-consolidating concrete. The w/c of the mixtures was either 0.42 or 0.50. The CA/TA ranged between 0.45 and 0.53. Slump flow was adjusted to 550, 650 or 720 ±20 mm by varying the superplasticizer content. Dmax was varied as 10, 15 and 20 mm. V-funnel, L-box, rheometer, sieve segregation tests and a new test method, recently developed by the authors, for dynamic segregation resistance were performed. The effect of each variable on the test results were effectively summarized in a table. Increasing the w/c, CA/TA and Dmax decreased the superplasticizer demand and increased the flowability. When the slump flow, w/c and CA/TA were higher, viscosity was found to be lower. Higher values of CA/TA and Dmax were found to reduce the passing ability. Increasing the slump flow (or superplasticizer content), CA/TA and Dmax disturbed the stability. Generally, the effects of w/c and slump flow on the SCC characteristics were more pronounced when compared to those of CA/TA and Dmax. Good correlations were obtained between several test results.
Soil-structure interaction analysis of Çelebiağa Mosque, Pertek-Türkiye
Authors:   Faculty of Engineering and Natural Sciences, Civil Engineering Department, Malatya Turgut Özal University, Malatya (Türkiye), Yıldız Özgür , Doğan Ebru ,   Faculty of Art, Design and Architecture, Architecture Department, Malatya Turgut Özal University, Malatya (Türkiye)
Published: December 2022

After the construction of the Keban Dam, some settlements with historical, cultural, and natural value were flooded. A scientific committee consisting of academicians and public authorities decided to the relocation of the buildings including the historical Çelebiağa Mosque. In this study, the seismic soil-structure interaction analysis of the historical Çelebiağa Mosque, which was dismantled and reconstructed in a separate region due to the construction of the Keban Dam was carried out. The analysis of the masonry mosque was performed with the SAP2000 finite element analysis software. The Winkler foundation model was used to idealize the soil environment on which the historical mosque was built. The effects of soil-structure interaction on historical masonry mosque were examined in terms of transmitted acceleration, response spectra, and lateral displacement at various heights of the structure. Depending on the results of the analysis, the effects of soil-structure interaction of a reconstructed historical masonry building were investigated. PGA was obtained as 0.51g at the flag level of the minaret under the Kocaeli earthquake and 0.94g under the Sivrice earthquake. Again, the maximum horizontal displacements of the minaret at the flag level were obtained as 11 cm and 8.5 cm under the Kocaeli and Sivrice earthquakes. The behavior of historical masonry structures under earthquake loads has been interpreted by considering the geological conditions.
Role of Ovarian Artery to Uterine Artery Anastomosis in Uterine Artery Embolisation: A Retrospective Study
Authors: Palanisamy Vasanthamani , Mahalingam Alamelu , Ramiah Nachiappan , Alagappan Periyakaruppan , Jagannathan Devimeenal
Published: December 2022

Introduction: Uterine Artery Embolisation (UAE) is now extensively recognised as a treatment for uterine fibroids, uterine artery pseudoaneurysms, and Uterine Arterio-Venous Malformations. The occurrence of collateral circulation from the ovarian artery to the uterine artery is one of the reasons for the failure of the process. The occurrence of ovarian failure and premature menopause after the UAE is high in patients with Utero-ovarian Artery (UOA) anastomosis. Aim: To classify UOA as per Razavi MK et al., angiographic classification and to determine the presence of such anastomosis in UAE procedure failure cases. Materials and Methods: A retrospective study was done for a period of two years from November 2017 to October 2019. UAE was performed with Poly Vinyl Alcohol (PVA) microparticles (300 to 500 µm in size) followed by capping with a gelatin sponge in all 25 cases and coils were used in three cases. The presence or absence of UOA and four different types as per Razavi MK et al., angiographic classification were noted. Results: Among 25 cases who underwent UAE, 14 had UOA. The majority (six cases) were type Ib, five cases were type Ia, two cases were type II and one case was type III. The bilateral anastomosis was noted in one case with type Ia and Ib on either side. Eight cases with UOA had successful embolisation. The UAE was successful in 16 cases, and failed in nine cases. Among various causes for failure, six out of nine were due to UOA. Among six failure cases of UOA, two cases were Type Ia, two cases were Type Ib, one case was Type II and one case was Type III anastomosis. Conclusion: UOA is one of the major risk factors in the procedural failures of the UAE. Identification avoids non target ovarian embolisation.
Assessment of a New Regression Equation for Mixed Dentition Space Analysis in Paediatric Population of Wardha, Maharashtra, India- A Research Protocol
Authors: Ragit Rutuja Purushottam , Fulzele Punit Ratnakar , Thosar Nilima
Published: December 2022

Introduction: Prediction of the mesiodistal crown width of unerupted canines and premolars in mixed dentition analysis is crucial. When Tanaka-Johnston’s equations, the most popular approach, are applied to diverse ethnic groups, their accuracy is questioned. Aim: To derive a new regression equation of mixed dentition space analysis for predicting the size of unerupted canines and premolars teeth among paediatric population of Wardha, Maharashtra, India. Materials and Methods: The study will be conducted in two phases. The study design for First phase is observational and second phase is interventional. Dental study casts of 400 patients aged 11-18 years will be selected in the first phase. A Digital Vernier Caliper (DVC) will be used to measure the mesiodistal crown dimension of all erupted permanent teeth up to first molar. Between four mandibular incisors and the caninepremolar segments of both arches, correlation and linear regression equations will be created. In the second phase, 30 children aged 6-11 years will be randomly selected. Analysis of Tanaka-Johnston’s equations, Huckaba GW equation and the proposed equation will be compared and further statistical analysis will be carried out. Results: New derived regression equation will allow the closer prediction of the size of unerupted canines and premolars in the paediatric population of Wardha. Conclusion: This new equation will allow an accurate prediction of the width of unerupted canines and premolars at an earlier age in the said population.
Attitude of Doctors Towards Homosexuality at a Medical College, West Bengal, India: A Cross-sectional Study
Authors: Debnath Ashis , Mukherjee Shuvankar , Das Ranjan , Mandal Sudipa
Published: December 2022

Introduction: Attitude towards homosexuality varies differently in different parts of the world. But, almost everywhere social stigma and marginalisation make them vulnerable to poor health and social outcomes. So, physicians should be made aware and sensitive about this issue in order to provide optimal care without any prejudices and discrimination. Aim: To assess the attitude of the doctors towards the homosexuality at a Medical College, West Bengal, India. Materials and Methods: A cross-sectional study was conducted for three months from August 2021 and October 2021 at Raiganj Government Medical College and Hospital, West Bengal, India. A predesigned, pretested, structured questionnaire was distributed to each of the faculty members of this medical college. The questionnaire was kept anonymous for name, religion, department or academic qualification and began with asking questions on age and sex. It consisted of 18 statements, nine substatements of relevant attitude along with additional specific comments on the subject. The faculty members were requested to put the filled up questionnaires in a drop box placed at a designated area in the Department of Psychiatry. In this way responses were finally obtained from 56 out of total 69 faculty members. All of them were postgraduate degree holders. The attitude scores were compared on the basis of age and sex using Kruskal-Wallis and Mann-Whitney U tests. A p-value was calculated to find the association of attitude score with age and gender groups. Results: Among the study participants 21 (37.5%) were in ≥50 years age group, 18 (32.1%) in 40-49 years age group and 17 (30.4%) in ≤40 years age group. Males were 41 (73.2%) and females were 15 (26.8%). Forty six (82.2%) participants agreed that homosexuality is “constitutionally determined” (an inherent fundamental right as per Indian constitution). However 34 (60.7%) did not believe it to be a “sexual orientation”. Half of the participants are of the opinion that “homosexuals are easily recognizable”. Forty three (76.8%) respondents are of the opinion that “homosexuals should not be employed in school”. Also 41 (73.2%) believed that “homosexuals are danger to children”. Only 23 (41.1%) generally agreed that they “did not feel embarrassed while talking about homosexuality”. Just above half of the participants agreed that they “really did not understand homosexuality. The attitude scores did not however vary according to age (p-value=0.25) or sex (p-value=0.09) groups. Conclusion: Majority of the study participants had inadequate knowledge on the issues of homosexuality with a more or less neutral stance in their attitude.