bluuebunny/crossref_metadata_2025 huggingface dataset:
Integrated ARM big.Little-Mali Pipeline for High-Throughput CNN Inference
Authors: Aghapour Ehsan
Published: July 2021

State-of-the-art Heterogeneous System on Chips (HMPSoCs) can perform on-chip embedded inference on its CPU and GPU. Multi-component pipelining is the method of choice to provide high-throughput Convolutions Neural Network (CNN) inference on embedded platforms. In this work, we provide details for the first CPU-GPU pipeline design for CNN inference called Pipe-All. Pipe-All uses the ARM-CL library to integrate an ARM big.Little CPU with an ARM Mali GPU. Pipe-All is the first three-stage CNN inference pipeline design with ARM’s big CPU cluster, Little CPU cluster, and Mali GPU as its stages. Pipe-All provides on average 75.88% improvement in inference throughput (over peak single-component inference) on Amlogic A311D HMPSoC in Khadas Vim 3 embedded platform. We also provide an open-source implementation for Pipe-All.

This paper is submitted to IEEE Transactions on Computer-Aided Design of Integrated Circuits and Systems (TCAD) as a transaction brief paper (5 pages).
Variable-Temperature Noise Characterization of N-MOSFETs Using an In-Situ Broadband Amplifier
Authors: Ohmori Kenji , Amakawa Shuhei
Published: July 2021

Characterization of broadband noise of MOSFETs from room temperature down to 120 K in fine temperature steps is presented. A MOSFET is mounted on a reusable printed circuit board vehicle with a built-in low-noise amplifier, and the vehicle is loaded into a cryogenic chamber. The vehicle allows noise measurement in the frequency range from 50 kHz to 100 MHz. At low frequencies, it enables extraction of activation energies associated with electron trapping sites. At high frequencies, as has been suggested by noise figure measurements, the white noise of MOSFETs is shown to be dominated by the shot noise, which has much weaker temperature dependence than the thermal noise. The shot noise will be a problematic noise source in broadband RF CMOS circuits operating at cryogenic temperatures.
ANALYTICAL SUBSTANTIATION OF THE RATIONAL MODE OF VIBRATION IMPACT ON THE HONEYCOMB
Authors: ШЕМЯКИН А.В. , БОРЫЧЕВ С.Н. , КАШИРИН Д.Е. , ПАВЛОВ В.В. , КУЗНЕЦОВ А.С.
Published: July 2021

Проблема и цель. Заключается в том, чтобы теоретически обосновать режим виброочистки воскового сырья, при котором происходит отделение частиц воска от перговых гранул. Методология. В результате вибрационного воздействия на соты с пергой действует вынуждающая сила, которая должна быть больше силы трения между перговой гранулой и восковой основой ячейки сота, для того чтобы гранулы перги отделились. Увеличить силу, действующую на гранулу, можно увеличением либо амплитуды, либо частоты колебаний. Управление частотой является более рациональным по сравнению с управлением амплитудой. Для расчета частоты и амплитуды вынуждающей силы используются следующие данные: 2h – толщина рамки с сотами, h = 0,01м; a – длина рамки с сотами, a = 0,3м; b – ширина рамки с сотами, b = 0,4м; ρ – плотность, ρ = 326 кг/м³; N – натяжение; g – ускорение свободного падения, g = 9,81 м/c²; E – модуль упругости, E = 206000 МПа; G – модуль сдвига, G = 74000 Мпа; ν – коэффициент Пуассона, ν = 0,3; υ – коэффициент вязкости. Моделирование исследуемого процесса выполняется в среде Mathcad встроенными средствами статистической обработки. При этом осуществляется математическое моделирование в определенных рамках технологического процесса. Результаты. При воздействии на рамки с сотами, в которых есть перга, гармоническими колебаниями, возникает резонанс на малых частотах, что помогает ускорять процесс очистки. Заключение. Для наиболее качественной очистки воскового сырья от примесей необходимо воздействие вибрации с частотой в диапозоне от 14 до 16 Гц. При этом возникает резонанс, который уменьшает затраты энергии на данный процесс.

Problem and purpose. The aim of the study is to theoretical justify the mode of vibration cleaning of wax feedstock, in which wax particles are separated from beads. Methodology. As a result of the vibration action, a force force is exerted on the feather honeycombs, which must be greater than the frictional force, in order for the feather pellets to separate from the wax cells of the honeycombs. To calculate the frequency and amplitude of the force, the following data 2h are used - the thickness of the frame with cells, h = 0.01m; a is the length of the frame with cells, a = 0.3m; b is the width of the frame with cells, b = 0.4m; ρ - density, ρ = 326 kg/m3 ; N - tension; g - acceleration of free fall, g = 9.81 m/c2 ; E - modulus of elasticity, E = 206000 MPa; G - shear modulus, G = 74000 MPa; v is Poisson's coefficient, v = 0.3; υ - viscosity coefficient. Results. When acting on frames with cells in which there is a feather, harmonic oscillations, resonance at low frequencies occurs, which helps to accelerate the cleaning process. Conclusion. For the highest quality purification of wax raw materials from impurities, vibration is necessary with a frequency in the diapozone from 14 to 16. At the same time, a resonance occurs that reduces the energy consumption for this process.
Estudios sociales acerca del desarrollo comunitario en América Latina y el Caribe: capital de autoridad y citación
Authors: Paz Enrique Luis Ernesto , Muñoz Gutiérrez Teresa del Pilar
Published: July 2021

En la construcción del conocimiento se evidencian enfoques dominantes y emergentes, manifestándose estos en las formas de investigar y socializar el conocimiento. La constitución del campo de los estudios sociales acerca del desarrollo comunitario en América Latina y el Caribe se encuentra en un proceso constante de cambios y contradicciones. Se evidencian pocos estudios en torno a la fundamentación e identificación de los capitales presentes en los estudios sociales comunitarios, específicamente los de autoridad y citación. El análisis de los capitales mencionados muestra a los agentes con mayor prestigio y reconocimiento por parte de la comunidad científica que se configura alrededor del campo. Se planteó como objetivo: identificar el capital de autoridad y citación dentro del campo científico de los estudios sociales acerca del desarrollo comunitario en América Latina y el Caribe utilizando como principal autor a Pirre Bourdieu (1976) y su Teoría de los Campos. El estudio se clasificó como descriptivo, longitudinal – retrospectivo. Se emplearon métodos en los niveles teórico y empírico, fundamentalmente el método bibliométrico. Se establecieron los autores, revistas y estudios con mayor capital de autoridad a partir de la citación. Se realizó una red de elementos citados que integró las fuentes empleadas en los estudios dentro del campo. La citación como capital científico mostró un campo poco consolidado con predominio de enfoques dominantes de la ciencia.
Responsabilidad Social Empresarial: una breve revisión teórica para el caso ecuatoriano
Authors: Andrade Cordero Celio Froilán
Published: July 2021

En el mundo contemporáneo es de interés estudiar la Responsabilidad Social Empresarial en sus múltiples dimensiones, ella incide en los resultados empresariales, en la generación de ventajas competitivas, el mejoramiento de la imagen corporativa y en un mayor nivel de vinculación con los grupos de interés. A las cualidades señaladas se les contextualiza en un ambiente caótico derivado de las tensiones ocasionadas por la globalización, y más recientemente por los efectos de la pandemia COVID-19, los cuales tienen consecuencias en América Latina que se manifiestan en desequilibrios de orden social, económico y político. Ello ha motivado el objetivo de esta investigación, describir la Responsabilidad Social en la gestión empresarial ecuatoriana. A través de una revisión documental con base a CEPAL (2020), Comité Empresarial Ecuatoriano (2020), Organización Mundial del Comercio (2020), Ormaza et al. (2020), Secretaría Nacional de Planificación y Desarrollo (SENPLADES) (2013, 2017), Urdaneta (2014), Cortina (2010), Guédez (2006), entre otros, se identifican los factores contextuales que inciden en la gestión del sector empresarial ecuatoriano considerando una visión sistémica de relaciones entre las empresas y su entorno, la incidencia de los efectos de la pandemia COVID-19, y la necesidad de incorporar la Responsabilidad Social cómo una estrategia permanente de gestión empresarial para desarrollar ventajas competitivas que permitan propiciar un mayor nivel de vinculación con los grupos de interés atendiendo a una visión ética de la corresponsabilidad empresa-sociedad.
"La experiencia de las cosas hechas" : La formación en Italia de Francisco Jareño y Alarcón (1848-1852)
Authors: Gallego García Raquel
Published: July 2021

Este libro constituye un estudio de la estancia en Italia del albacetense Francisco Jareño, destinado a ser uno de los protagonistas del panorama arquitectónico de la segunda mitad del siglo XIX. Gracias a una pensión extraordinaria que le concedió la recién nacida Escuela Especial de Arquitectura de Madrid, Jareño residió en tierras italianas entre 1848 y 1852 y estudió en Roma bajo la supervisión de Antonio Solà, en compañía del también arquitecto Jerónimo de la Gándara y de los pintores y escultores pensionados por la Real Academia de Bellas Artes de San Fernando.
FORMULATION OF THE PROBLEM FOR RESEARCHING THE COMPETITION OF TWO FIRMS TAKING INTO ACCOUNT THEIR MUTUAL AWARENESS
Authors: Борисоглебская Лариса Николаевна , Данилевич Денис Владимирович , Пахолкин Евгений Васильевич , Сергеев Сергей Михайлович
Published: July 2021

Исследование посвящено математическому моделированию ситуации конкурентного присутствия в рамках рыночной дуополии. Рассматривается ситуация чистой конкуренции и вариант взаимной осведомленности о стратегии конкурента. Результаты исследования имеют практическое значение для деятельности Инжинирингового центра технологий цифровой среды для обеспечения комплексной безопасности телекоммуникации, средств связи и энергоэффективности Орловского государственного университета им. И.С. Тургенева. Основные положения могут применяться при выборе стратегии поведения на рынке стратегически важных инновационных продуктов. Представленные в рамках данного исследования материалы и математическая модель, разработанные в соответствии с программой деятельности Инжинирингового центра, созданного на базе ОГУ им. И.С. Тургенева, по направлению технологий цифровой среды для обеспечения комплексной безопасности телекоммуникации, средств связи и энергоэффективности дают возможность осуществить прогнозный расчет экономически важных показателей и сопутствующих издержек в условиях конкурентного окружения.

The study is devoted to mathematical modeling of the situation of competitive presence within the framework of a market duopoly. The situation of pure competition and the variant of mutual awareness of the competitor's strategy is considered. The results of the study are of practical importance for the activities of the Engineering Center for Digital Environment Technologies to ensure the integrated security of telecommunications, communications and energy efficiency of the Oryol State University. I.S. Turgenev. The main provisions can be applied when choosing a strategy of behavior in the market of strategically important innovative products. The materials and mathematical model presented in the framework of this research, developed in accordance with the program of activities of the Engineering Center, created on the basis of the OSU named after I.S. Turgenev, in the direction of digital environment technologies to ensure integrated security of telecommunications, communications and energy efficiency, make it possible to carry out a predictive calculation of economically important indicators and associated costs in a competitive environment.
Review of the 149th meeting of the Dispute club “Economic Policy Knots” of the Association of the Russian Economic Think Tanks on the Topic “Fiscal Stimulation in a Pandemic Crisis - How Much, From What Sources, How?”
Authors: Zubova E. A. , Izmailov A. A. , Tutov L. A.
Published: July 2021

The work is devoted to a review of the results of the 149th meeting of the Dispute Club “Economic Policy Knots” of the Association of Russian Economic Think Tanks (hereinafter referred to as ARETT) on the topic "Fiscal stimulus in a pandemic crisis – how much, from what sources, how?". The purpose of the event was to discuss a number of issues related to the effectiveness of the measures of fiscal stimulus of the economy adopted by Russian authorities in the context of crisis caused by COVID-19 pandemic. The debaters were Oleg V. Buklemishev, head of the Center for Economic Policy Research of the Faculty of Economics of Lomonosov Moscow State University, and Evsey T. Gurvich, head of the Economic Expert Group. The review presents the key ideas of the disputants, and also summarizes the main results of their answers to questions.
A IDENTIDADE QUILOMBOLA EM UMA ESCOLA DA COMUNIDADE BAIXA GRANDE DO MUNÍCIPIO DE MURITIBA-BA
Authors: Da Silva Alves Flávia , Conceição Silva Araujo José
Published: July 2021

O presente trabalho tem como objetivo geral compreender como se dá a construção da identidade quilombola em uma escola da comunidade Baixa Grande do Município de Muritiba - BA e como objetivos específicos investigar como originou a comunidade Baixa Grande-Muritiba/BA e dentro dela a escola em questão e identificar como é construída a base curricular e identitária da referida escola quilombola. O estudo constitui-se de uma abordagem qualitativa, formato de pesquisa descritiva, compondo-se de uma pesquisa de campo. Os resultados apresentados demonstram que tal modalidade de educação vem, aos poucos, dando maior visibilidade à referida comunidade quilombola, rompendo com os paradigmas e estereótipos existentes em relação à temática, inclusive nos ambientes acadêmicos.
Discovery of 22 GHz Water Masers in the Serpens South Region
Authors: Ortiz-León Gisela N. , Plunkett Adele L. , Loinard Laurent , Dzib Sergio A. , Rodríguez-Garza Carolina B. , Pillai Thushara , Gong Yan , Brunthaler Andreas
Published: July 2021

Using the Karl G. Jansky Very Large Array (VLA), we have conducted a survey for 22 GHz, 61,6–52,3 H2O masers toward the Serpens South region. The masers were also observed with the Very Long Baseline Array following the VLA detections. We detect for the first time H2O masers in the Serpens South region that are found to be associated to three Class 0–Class I objects, including the two brightest protostars in the Serpens South cluster, known as CARMA-6 and CARMA-7. We also detect H2O masers associated to a source with no outflow or jet features. We suggest that this source is most probably a background asymptotic giant branch star projected in the direction of Serpens South. The spatial distribution of the emission spots suggest that the masers in the three Class 0–Class I objects emerge very close to the protostars and are likely excited in shocks driven by the interaction between a protostellar jet and the circumstellar material. Based on the comparison of the distributions of bolometric luminosity of sources hosting 22 GHz H2O masers and 162 young stellar objects covered by our observations, we identify a limit of L
Bol ≈ 10L
⊙ for a source to host water masers. However, the maser emission shows strong variability in both intensity and velocity spread, and therefore masers associated to lower-luminosity sources may have been missed by our observations. We also report 11 new sources with radio continuum emission at 22 GHz.
Network of Star Formation: Fragmentation Controlled by Scale-dependent Turbulent Pressure and Accretion onto the Massive Cores Revealed in the Cygnus-X GMC Complex
Authors: Li Guang-Xing , Cao Yue , Qiu Keping
Published: July 2021

Molecular clouds have complex density structures produced by processes including turbulence and gravity. We propose a triangulation-based method to dissect the density structure of a molecular cloud and study the interactions between dense cores and their environments. In our approach, a Delaunay triangulation is constructed, which consists of edges connecting these cores. Starting from this construction, we study the physical connections between neighboring dense cores and the ambient environment in a systematic fashion. We apply our method to the Cygnus-X massive GMC complex and find that the core separation is related to the mean surface density by

Σ

edge

∝

l

core

−
0.28

, which can be explained by fragmentation controlled by a scale-dependent turbulent pressure (where the pressure is a function of scale, e.g., p ∼ l
2/3). We also find that the masses of low-mass cores (

M

core

<
10

M

⊙

) are determined by fragmentation, whereas massive cores (

M

core

>
10

M

⊙

) grow mostly through accretion. The transition from fragmentation to accretion coincides with the transition from a log-normal core mass function (CMF) to a power-law CMF. By constructing surface density profiles measured along edges that connect neighboring cores, we find evidence that the massive cores have accreted a significant fraction of gas from their surroundings and thus depleted the gas reservoir. Our analysis reveals a picture where cores form through fragmentation controlled by scale-dependent turbulent pressure support, followed by accretion onto the massive cores, and the method can be applied to different regions to achieve deeper understandings in the future.
The Sunward Electron Deficit: A Telltale Sign of the Sun’s Electric Potential
Authors: Halekas J. S. , Berčič L. , Whittlesey P. , Larson D. E. , Livi R. , Berthomier M. , Kasper J. C. , Case A. W. , Stevens M. L. , Bale S. D. , MacDowall R. J. , Pulupa M. P.
Published: July 2021

As the Parker Solar Probe explores new regions of the inner heliosphere, it travels ever deeper into the electric potential of the Sun. In the near-Sun environment, a new feature of the electron distribution emerges, in the form of a deficit in the sunward suprathermal population. The lower boundary of this deficit forms a cutoff in phase space, at an energy determined by the electric potential drop between the observation point and the outer heliosphere. We explore the characteristics of the sunward deficit and the associated cutoff, as well as the properties of the plasma in which we observe them. The deficit occurs in ∼60%–80% of electron observations within ∼0.2 au, and even more frequently in plasma with low β, low collisional age, and a more anisotropic electron core population. At greater distances, the deficit rapidly disappears, as the suprathermal halo grows, with these two trends likely related. The cutoff energy varies linearly with the local electron core temperature, confirming a direct relationship to the ambipolar electric potential. Meanwhile, the cutoff width varies with β and collisional age, suggesting that energy diffusion plays a role in erasing the deficit. The nearly ubiquitous occurrence of the sunward deficit in the inner heliosphere suggests that we may need to reconsider the functional forms commonly used to represent electron distributions in this environment.
miRNA-17-5p Target Prediction and its Role in Senescence Mechanism through p21 Interference
Authors: Murlistyarini Sinta , Sardjono Teguh Wahju , Hakim Lukman , Widyarti Sri , Utomo Didik Huswo , Permatasari Galuh Wening , Hernowaty Tinny Endang
Published: July 2021

BACKGROUND: Cellular senescence is known to be correlated with the cessation of cell cycle. The progression of cell cycle is promoted by activities of various proteins, including cyclin-dependent kinase (CDK) and cyclin proteins, which work synergistically. CDK-cyclin complexes are influenced by other proteins, such as retinoblastoma (Rb) and E2F proteins. In cell cycle, both Rb and E2F proteins could be affected by one of the CDK inhibitors, that is, p21. MicroRNA (miRNA) is well known for its role in biological processes, including cell cycle. However, the contribution of miRNA in cell cycle is still poorly understood. Some miRNAs play a role in pro-proliferation and anti-proliferation.

AIM: This study was performed an in silico study analysis to reveal the relationship between miRNA-17-5p and p21 in the process of cellular senescence.

METHODS: The extensive data mining was conducted to determine the miRNA that contributes to the process of anti-aging prevention and the desired target genes through the Human Protein Atlas and cancer database. miRNA target prediction was performed using DIANA-microT-CDS. Gene function of the miRNA-17-5p target was annotated using DAVID GO.

RESULTS: The sequence of hsa-miRNA-17-5p (CAAAGUGCUUACAGUGCAGGUAG) has three attachment sites with binding types of 8 mer, 6 mer, and 8 mer at the transcription sites of 447–474, 485–513, and 1132–1154, respectively. The main profile of hsa-miRNA-17-5p showed that it bound to 3’-untranslated region and the coding region (exon).

CONCLUSIONS: The miRNA-17-5p was involved in cellular senescence by influencing the process of cell proliferation in the cell cycle pathway.
Determinants Influencing Awareness and Healthy Practices among a Sample of Insulin-dependent Diabetic Egyptian Patients: A Rural Community-based Study
Authors: Metwally Ammal M. , Yousof Hanaa , Elkholy Monira M. , Eletreby Lobna A. , Barakat Abeer A. , Abd El Dayem Soha M. , Abdelrahman Mohamed , Eldeeb Sherif M.
Published: July 2021

BACKGROUND: The prevalence of diabetes mellitus (DM) is predicted to increase over the coming years.

AIM: The objectives of the study were to measure the level of awareness and healthy practices related to five healthy domains and assess the effect of different demographic characteristics, glycated hemoglobin (HbA1c) level, and body mass index (BMI) on these levels among diabetic patients in a rural Egyptian village.

METHODS: A cross-sectional study was done on 300 selected insulin-dependent diabetic patients resident in an Egyptian village. Data were collected using a questionnaire covering five domains: General disease awareness and management compliance practice, check-up, foot care, diet, and physical activity. HbA1c and BMI were also measured as an impact of the management adherence.

RESULTS: The study found that more than three quarters of the participants (82.0%) were uncontrolled or poorly uncontrolled (HbA1c >8) diabetics and 76.0% were either obese or morbidly obese. Total awareness and practices percentage scores were low (42.4 ± 16.8% and 40.5 ± 12.3%, respectively). The linear regression model showed that high educational level had significantly positive effects on both the total awareness and practice scores as well as their domains. The study found that female participants and those having relatives with DM had significantly higher diet awareness and practice scores (p < 0.05). Younger age had significantly higher scores on foot care and diet awareness scores, physical activity, general disease awareness, and management compliance practices domains.

CONCLUSION: The studied awareness and practice domains were inadequate. Their improvement is cornerstones to impact glycemic control of diabetics and control their health risks, especially in rural communities.
Open Versus Percutaneous Approach of Renal Tumor Biopsy at Cipto Mangunkusumo Hospital: A Single-center Experience
Authors: Ertandri Luki , Hamid Agus Rizal A.H. , Saraswati Meilania , Mochtar Chaidir A. , Umbas Rainy
Published: July 2021

BACKGROUND: Renal tumor biopsy is beneficial as it is capable of distinguishing between histological types of renal tumor; hence, it plays an important role in deciding the best therapy regimen.

AIM: This study aims to evaluate the clinical experiences of renal biopsy in Cipto Mangunkusumo National Referral Hospital (RSCM), with both a percutaneous and open approach. It also aims to analyze the indications, results, intraoperative information, and complications of the two approaches.

METHODS: This study was conducted using the retrospective cohort design; meanwhile, data were collected from RSCM from 1990 to 2019. The biopsy sample was taken using percutaneous and open renal biopsy, while comparative analysis was done between the two biopsy approaches.

RESULTS: Data were collected from 33 patients that underwent renal biopsy from 1990 to 2019. Majority of the cases were diagnosed as unresectable renal tumor, while histological examination found clear cell carcinoma in most of the cases (73%). Furthermore, the open approach showed longer duration and higher blood loss compared to percutaneous technique with median 60 (30–120) versus 30 (5–60) min (p < 0.001) and 100 (5–650) versus 2 (1–5) ml (p < 0.001), respectively. In general, complications were reported to be low for both techniques.

CONCLUSION: Based on the results, percutaneous renal biopsy has similar efficacy and complications rates in tumor sampling for histopathology together with open approach. However, there were significant differences in the duration and blood loss; hence, percutaneous biopsy is more favorable.
Determination of Urine Protein Levels and Analysis of Differences in Vascular Endothelial Growth Factor Levels between Early Onset and Late Onset Preeclampsia
Authors: Irwanto Engga Lift , Darwin Eryati , S Donel , Tjong Djong Hon Tjong
Published: July 2021

BACKGROUND: Preeclampsia is a disease with the high mortality rate. Data indicate that 23.5% of maternal deaths due to preeclampsia. Urine protein testing is essential for pregnant women to discover the function of kidney during pregnancy and to identify the presence of preeclampsia, both mild and severe, which it can lead to eclampsia. Preeclampsia based on onset can also be detected by examining serum biomarkers of Vascular Endothelial Growth Factor (VEGF).
AIM: The aim of this study was to overview the urine protein levels and analyzed the differences serum VEGF levels between the early and late onset of preeclampsia.
MATERIALS AND METHODS: This study used design of the cross sectional comparative study in RSUP DR. M Djamil Padang, Pariaman Hospital, Aisiyah Pariaman Hospital, and Padang Pariaman Regional Hospital for 2 years. The population in this study consisted of patients with early and late onset preeclampsia who went to the study site during that time and met the inclusion criteria. Sampling with consecutive sampling consisted of 28 people per group.
RESULTS: The results revealed that the number of patients who had urine protein levels with a value of 2+ at the early onset was 14 and at the late onset was 12, meanwhile for patients with a urine protein content value of 3+ at the early onset it was 14 and at the late onset was 10.For the category urine protein with a value of 4+ amounted to 6 people only in the late onset group. The results of the normality test showed that the mean value of VEGF levels at early onset and late onset was 3.91 pg / ml and 4.3 pg / ml, respectively. Thus, the level of VEGF serum had an abnormal distribution and it led to the T test data could not be tested. So then, the testing was done using a non-parametric test, namely the Mann-Whittney test. The mean levels of VEGF, respectively, based on the Mann-Whittney test for early onset preeclampsia and late onset preeclampsia were 29.75 ng / mL and 30.25 ng / mL. VEGF in early onset preeclampsia is lower than late onset preeclampsia.
CONCLUSION: Based on the results obtained, it can be concluded that there was no significant difference in the level of VEGF in early onset preeclampsia and late onset preeclampsia (p = 0.42).
Keywords: Preeclampsia, early onset, late onset, urine protein, VEGF
Reducing Depression, Anxiety, and Fatigue Level in Cervical Cancer through Physical Exercise Intervention
Authors: Imelda Fatwa , Santosa Heru , Raja Sarma Nursani L. , Lubis Namora Lumongga
Published: July 2021

Background: To identify the effect of physical exercise on depression, anxiety, and fatigue in cervical cancer patients.
Methods: A quasi-experimental study ith a pretest-posttest with control group design was used. 30 respondents were selected using purposive sampling. The data were gathered by a focus group discussion. The Piper Fatigue Scale (PFS) was used to measure fatigue levels. Hospital Anxiety and Depression Scale (HADS) were used to measure anxiety and depression level. Paired t-test was used for data analysis.
Results: There was a significant difference between depression level after physical exercise with t=3.552 (p<0.05). There was a significant difference between anxiety level after physical exercise with t=11.297 (p<0.05). There was a significant difference between fatigue level after physical exercise with t=17.457 (p<0.05).
Conclusion: Physical exercise reduces anxiety, depression, and fatigue in patients with cervical cancer that will improve the quality of life of patients.
Brain Abscess Due to Neglected Tetralogy of Fallot: A Case Report
Authors: Malisie Ririe F. , Abdillah Hafaz , Saputra Hariadi E. , Dewanto Bayu , Gloriana Josephine
Published: July 2021

Backgroiund: Tetralogy of Fallot (TOF) is a type of congenital heart disease accounts for about 10% of all congenital cardiac deformities, and is the most common cyanotic lesion after the first year of life. The ideal age for correction of tetralogy of Fallot is still under discussion. Non-cardiac manifestation due to oxygen deficiency has to be aware of in cyanotic patient is brain abscess, because of the right-left shunt in long standing TOF.
Objectives: To report a case of neglected TOF.
Case And Discussion: A one-year-old male presented to Murni Teguh Memorial Hospital with the chief complaint of stiffed neck for the past 3 days and got fever for 10 days before admitted, with nausea and vomiting. He was diagnosed with Tetralogy of Fallot through an echocardiography examination when he was 2 months old, but never go through any medical nor surgical treatment. The boy responded to verbal, no eye contact, high grade fever, stiffed neck, Kernig sign and Brudzinski sign was found, and the right extremities were spastic, clubbing finger. On cardiac examination, there was systolic murmur grade ¾ in the left second intercostal space. Echocardiography evaluation revealed dilated RA-RV, no PDA shunt, large mal alignment ventricular septal defect, overriding aorta > 50%, right ventricular hypertrophy, and severe infundibular pulmonary stenosis, consistent with Tetralogy of Fallot. During hospitalization, there were several episodes of seizure and decreased of consciousness, brain CT investigation was done. The abscess was evacuated and a ventriculoperitoneal shunt was performed. One week after the operation, the patient developed abdominal distention, green bile like vomiting, decreased bowel movement and soon muscular defense. From the plain abdominal x-ray and CT revealed peritonitis and intestinal obstruction. An emergency laparotomy was performed, followed by adhesiolysis and jejunostomy due to jejunal perforation. The boy passed away after several episodes of septic shock.
Conclusions: We would like to emphasis the consequence of the neglected treatment in infant with TOF.
The Effect of Coffee Arabica Gayo Leaf Extract (Coffea arabica L.) on Increased PI3K Serum Levels in Type 2 Diabetic Rat
Authors: Martina Sake Juli , Lelo Aznan , Lindarto Dharma , Ganie Ratna Akbari , Ichwan Muhammad , Yusuf Hanifah , Ilyas Syafruddin , Nasution Iqbal Pahlevi
Published: July 2021

BACKGROUND: Coffee arabica gayo leaf extract (Coffea arabica L.) contains polyphenols (chlorogenic acid), flavonoids, saponins, tannins, and steroids which improved PI3K serum levels in rats type 2 diabetic rat.

AIM: The purpose of the study was to determine the effect of Coffee Arabica Gayo Leaf Extract (C. arabica L.) on increased PI3K serum levels in type-2 diabetic rat (Rattus norvegicus).

METHODS: Thirty-five male Wistar rats with type 2 diabetic induced a combination of feeding a high-fat diet for 5 weeks and intraperitoneal injection of low dose streptozotocin (30 mg/kg). The diabetic rats were randomly divided into seven groups which consist of group without type 2 diabetic, group without type 2 diabetic with dose 250 mg/kg/day Coffee Arabica Gayo Leaf Extract, group with type 2 diabetic without intervention, group with type 2 diabetic with metformin, and group with type 2 diabetic with Coffee Arabica Gayo Leaf Extract doses 150, 200, and 250 mg/kg/day. The extract was administered orally for 30 days. Subsequently, PI3K serum levels were measure by Sandwich Elisa.

RESULTS: There were significantly higher PI3K serum levels in the treatment groups than in the control groups (p = 0.037) after giving Coffee Arabica Gayo Leaf Extract 200 mg/kg/day and 250 mg/kg/day to rats for 30 days.

CONCLUSION: These data suggest that Coffee Arabica Gayo Leaf Extract can improve PI3K serum levels in a rat model type 2 diabetic.
The Relationship between Glycated Hemoglobin Levels and the Quality of Life among Type 1 Diabetes Mellitus in Children
Authors: Susilowati Susilowati , Arto Karina Sugih , Lubis Aridamuriany D.
Published: July 2021

BACKGROUND: Diabetes mellitus is a group of metabolic diseases characterized by hyperglycemia that occurs due to impaired both in insulin secretion and insulin action. Children with type 1 diabetes mellitus should be targeted to achieve a glycated hemoglobin (HbA1C) level ≤7.0% to reduce the risk of complications and improve quality of life. The majority of children with type 1 diabetes mellitus exhibit poor self-care and Health-related Quality of life behavior.

AIM: The objective of the study was to determine the relationship between HbA1C level and the quality of life among type 1 diabetes mellitus in children.

METHODS: A cross-sectional study was conducted among 30 children with type 1 diabetes mellitus who attended at pediatric endocrine clinic Haji Adam Malik general hospital and Universitas Sumatera Utara hospital Medan. Sampling was carried out in April 2020–July 2020. HbA1C level and self-administered questionnaire were used to assess the quality of life. Spearman correlation test was conducted to assess the correlation between HbA1C levels and the quality of life.

RESULTS: The mean of HbA1C level was 10.35 ± 2.68. No significant correlation between HbA1C level and the quality of life of children with type 1 diabetes mellitus (r = 0.264, p > 0.05)

CONCLUSIONS: There was no significant correlation between HbA1C levels and the quality of life of children with type 1 diabetes mellitus.
Moderate Dose of Lipopolysaccharide Induces Tumor Necrosis Factor-alpha and Interleukin-6 Production by Human Monocyte-derived Macrophages
Authors: Meutia Nuraiza , Lubis Lokot Donna , Megawati Eka Roina
Published: July 2021

BACKGROUND: Macrophages have been widely used for in vitro studies. Despite different types and doses of stimulatory agents that have been tested, there is no consensus for the method. AIM: This study was aimed to determine a sufficient dose of lipopolysaccharide (LPS) to stimulate inflammatory response in macrophages. METHODS: Whole blood was collected from four donors after written informed consent. The monocytes were isolated from peripheral blood mononuclear cells and stimulated with macrophage colony-stimulating factor, LPS, and Interferon-gamma for 6 days until differentiated into macrophages. The production of Tumor necrosis factor-alpha (TNF-α) and Interleukin-6 (IL-6) were quantified after 24-h further stimulation with 100 ng/mL and 2 μg/mL of LPS. RESULTS: Both doses increased TNF-α _production compare to their controls, but not statistically different (p > 0.05). There were also no differences in IL-6 production between treatments, 56.55 ± 32.30 pg/mL and 70.96 ± 65.08 pg/mL, respectively. CONCLUSION: A dose of 100 ng/mL of LPS was sufficient to stimulate inflammatory response in human monocyte-derived macrophages. A 24-h duration of macrophage stimulation was sufficient to observed the production TNF-α.
Synthesis of Environmentally Friendly Silver Nanoparticles
Authors: Hussein Mushtaq Ali , Trier Saleem H. , Kadhim Shaymaa Awad
Published: July 2021

The nanoparticles synthesized by plants and micro-organisms are environmentally safe and do not leave residues or long-term toxic effects in ecosystems or accumulate in the environment and transfer through the food chain. Therefore, the aim of the research is to synthesize silver nanoparticles from the leaves of the oleander plant, where they are environmentally friendly when used for various purposes such as controlling agricultural pests. The results showed that the leaves of this plant have the ability to synthesize silver nanoparticles and this is confirmed by the tests of color change of the plant extract the reaction solution, the color of the solution changed from colorless to pink. Physical diagnostic tests such as absorption using a UV-Visible spectrophotometer at a wavelength of 340 nm, transmission electron microscope (TEM) and X-ray diffraction (XRD) technique have confirmed the formation of AgNPs in the leaves of a plant oleander. Keywords: silver nanoparticles, synthesis, environmentally friendly, physical diagnosis
The Role of Formic Acid as Secondary Dopant and Solvent for Poly(O-Toluidine) Intrinsically Doped with Camphor Sulfonic Acid
Authors: Mohammed Kahtan A. , Ziadan Kareema M. , Al-Kabbi Alaa S. , Abdulzahr Dalael Saad , Judi Hawraa Kareem , Hussein Hussein M.
Published: July 2021

The role of formic acid as Secondary Dopant for Poly (O-toluidine) Intrinsically Doped with Camphor Sulfonic-Acid (POT-CSA) nanoparticles were prepared by chemical polymerization had been studied. Spin coating and casting method have been used to deposit good adhesion and uniform thin films of (POT-CSA) on a glass substrates at room temperature. the properties of (POT-CSA) nanoparticles which examined by FTIR, SEM, AFM, XRD, I-V characteristics and UV-VIS. FTIR studies show the several bending and stretching modes of POT. XRD examination demonstrated that NPS. has a semi-crystalline pattern . The synthesized film well covered by the nanoparticles over the entire substrate surface, exhibits uniform, porous, and spherical granular surface morphology, A narrow size distribution is observed and the average size of particles about 80 nm. The band gap (Eg) has been determined which is equal to 3.1 ev. The room temperature conductivity of POT-CSA was 3 * 10-1 S.cm-1,which increases with increasing temperature. Electrical conductivity enhances up to three order after the secondary doping process. Keywords: POT-Chemical polymerization-Conducting polymer-SEM-AFM
Experimental Validation of Phase Change Material Cooling Performance Integrated into Finned Heat Sink
Authors: Mahdi Hussein Salah , Jalil Jalal Muhammad , Allawy Asim Sahib
Published: July 2021

The aim of this study is to analyze the phase change material cooling performance integrated into heat sink experimentally. a paraffin wax as phase change material is used in this experiment and it placed under the heat sink with thickness 30mm , various power input at 11W,13W and 15W used in this experiment to generate heat at different levels also several fan speed at 15m/s,2.5m/s and 3.4m/s. the surface temperature of the heat sink is monitored over the time to evaluate the phase change material thermal performance . From the results ,temperature drop and the time lag in case of without PCM compared to with PCM shows the effect of cooling of adding PCM under low and high speeds of heat removal. It found that inclusion of PCM into heat sink with forced convection shows high temperatures drop up to 18 °C.
Synthesis of Poly[Allyl Chloride - Co Acrylic Acid] Polymers for Nucleic Track Detection from Alpha Particles
Authors: Karim Zahraa S. , Aswood Murtadha Sh.
Published: July 2021

This paper describes the synthesis and development of new polymers for solid state nuclear trak detector of two novel poly Allyl cloride – co Acrylic acid and diethanol amine of polymeric detectors of alpha charged particle tracks. The detectors were irradiated by two radioactive sources, Amercium (Am-240) and Polonium (Po-210) for 5 hours, and traces of alpha particles were seen in the microscope and their diameters were measured. The results showed the density of tracks of alpha particles from (Am-240) and (Po-210) are 295.86, 655.33 respectively, while the average of their diameters are 5.83, 4.78 respectively.
The Effect of Ethanol Solvent on Characterization of MAPbI3 Perovskite
Authors: Abood Mohammad Malik , Dakhil Osama Abdul Azeez , Baron Aref Saleh
Published: July 2021

Methyl ammonium lead iodide CH3NH3PbI3 Perovskite was synthesized by a new method mixing between one and two steps, in addition, the ethanol solvent was used to dissolve CH3NH3I and compared with isopropanol solvent. The characterizations of synthesized perovskite samples included the structural properties, morphological characteristics and optical properties. The intensity and orientation in X-ray diffraction patterns appear clearly in ethanol solvent while disappearing at a peak at 12o due to the speed reaction of perovskite in this solvent. Additionally, the ethanol solvent increasing the grain size of perovskite which homogeneity of the surface morphology. the ethanol solvent cause a decrease in the wavelength of absorbance edge in addition to an increase in the energy bandgap value. Keywords: Ethanol Solvent, Perovskite, Photovoltaic Technologies, X-ray diffraction.
Red Laser Irradiation Effect on the Structural Properties of MawsoniteCu6Fe2SnS8 [CFTS] Thin Films Deposited via Semi-Computerized Spray Pyrolysis Technique
Authors: Chiad Bahaa T. , Al-Helaly Mushtaq Talib , Al-Tememee Nathera A.
Published: July 2021

The existing investigation explains the consequence of irradiation of violet laser on the structure properties of MawsoniteCu6Fe2SnS8 [CFTS] thin films. The film was equipped by the utilization of semi-computerized spray pyrolysis technique (SCSPT), it is the first time that this technique is used in the preparation and irradiation using a laser. when the received films were processed by continuous red laser (700 nm) with power (>1000mW) for different laser irradiation time using different number of times a laser scan (0, 6, 9, 12, 15 and 18 times) with total irradiation time (0,30,45,60,75,90 min) respectively at room temperature.. The XRD diffraction gave polycrystalline nature with tetragonal crystal system.The result was that the structure properties of MawsoniteCu6Fe2SnS8thin films affected by laser irradiation where the XRD measurement the result was the grain size and stress values that decrease with increasing irradiation time, whereas the values of intensity , FWHM and d-spacing for the largest peak increase with a slight increase with the increase in the irradiation time and slight increase in growth of some peaks with increasing irradiation time.. While not affected EDX and FTIR measurements by laser irradiation, the result was the same for all samples.As for AFM measurement showed that the surface roughness, root mean square and average diameter values that decrease with increasing irradiation time. Note from SEM measurement that the surface topography affected with different time of irradiation red laser. This result due to laser irradiation worked like annealing temperature to enhance the crystallization of the deposited films. As the results showed that the laser irradiation method has a clear change in the structure properties with less time and energy than the traditional annealing methods which is the aim of this study. Keywords: red laser irradiation, semi-computerized spray technique, Structure properties of Mawsonite, Cu6Fe2S8Sn.
Enhanced UV Absorption and Low Energy Gap of Polymer Doped ZrO2- SiC NPs
Authors: Nattah Ayad Mohammed , Hashim Ahmed
Published: July 2021

In present work, the structure, absorption and energy gap of films prepared from biodegradable polymer doped ZrO2-SiC NPs for UV-shielding, biomedical fields and optoelectronics approaches were investigated. The nanocomposites films were fabricated by casting method. The absorption spectra was measured in range (200-800) nm. Results indicated to enhance in absorption and energy gap of biopolymer by adding of ZrO2-SiC NPs ratios, this behavior make it suitable for various applications like antibacterial films, anti-UV light, diodes, solar cell, transistors and other fields. Keywords: biodegradable polymer, UV-shielding, absorption, energy gap, ZrO2.
Boosting Mechanical Properties of Orthoses - Foot Ankle by Adding Carbon Nanotube Particles
Authors: Jeryo Abbas H. , Chiad Jumaa S. , Abbod Wajdi S.
Published: July 2021

In this process, optimum laminating properties were used in producing prosthesis and orthoses were researched and selected based on high yield, ultimate stresses, stresses of bending and fatigue properties. The process of the optimal selection is the Response Surface Methodology (RSM), which has been used to reach two parameters: reinforcement perlon fiber and percent of multi-strand carbon MWCNT nanotube combined with the matrix resin. The response surface methodology is a combination of mathematician and statistic techniques which are used for experimental model building and analysis of problems. This technique revealed 13 separate laminations samples with a percentage of separate Perlon layers No. and MWCNT Wt %. Tests were conducted for all lamination materials as defined in RSM methods and rendered by vacuum system, including fatigue tests for the ideal laminating material as opposed to laminations developed in the prior study (three Tensile test, Bending test and Fatigue tests according to the ASTM D638 and D790 respectively). Tests from the system version 10.0.2 of Design Expert found lamination (10 perlon layers and 0.75% of MWCNTs) to be the best according to overall yield, ultimate and bending loads in the 12 other laminations. Fatigue eventually revealed that constraints were applied to the stamina tension (2,66, 1,66) for optimum lamination, relative to ten perlon lamination layers and 424 lamination respectively.
ALLE RADICI DELLA GRANDE CRISI. GIORGIO LUNGHINI E JOHN MAYNARD KEYNES
Authors: Carabelli Anna Maria
Published: July 2021

The notes in memory of Giorgio Lunghini deal with his approach to economic theory and in particular with his investigation of the causes of the great economic crisis of the 2007-2013 years. He identifies four main causes of the crisis: 1) the financialization of the world economy; 2) the growing debt of the private and public sectors; 3) the global trade and capital movement imbalances (in USA, Asia, South America and Europe); the existence of countries which are in a structural trade deficit and surplus; the sharp division between debtor and creditor countries; 4) the role of economic theory e in particular the return to the laissez-faire doctrine and liberalism (monetarism; the critiques to “bastard” Keynesians rather than Keynes who, in Lunghini’s view, is not a Keynesian); the return to the “Treasury view”, the “Washington consensus” and “Bruxelles consensus”. In the Notes, these four causes are analysed in detail.