bluuebunny/crossref_metadata_2025 huggingface dataset:
Copper Hydrotalcite (Cu-HT) as an Efficient Catalyst for the Hydrogenation of CO2 to Formic Acid
Authors: Maru Minaxi S. , Patel Parth , Khan Noor-ul H. , Shukla Ram S.
Published: April 2020

:

Hydrogenation of CO2 to energy-rich products over heterogeneous metal catalysts has
gained much attention due to their commercial applications. Specifically, the first-row transition metal
catalysts are very rarely reported and discussed for the production of formic acid from the hydrogenation
of CO2. Herein, hydrotalcite supported copper metal has shown activity and efficiency to produce
formic acid from the hydrogenation of CO2, without adding any additional base or promoter and was
effectively recycled 4 times after separating by simple filtration without compromising the formic acid
yield. Hydrotalcite supported copper-based catalyst (Cu-HT) was synthesized through the coprecipitation
method and used as a heterogeneous catalyst for the hydrogenation of CO2. The precise
copper metal content determined by ICP in Cu-HT is 0.00944 mmol. The catalyst afforded maximum
TOF, 124 h-1 under the employed reaction conditions: 100 mg catalyst, 60 °C, 60 bar total pressure of
CO2/H2 (1:1, p/p) with 60 mL of mixed methanol:water (5:1, v/v) solvent. Cu-HT catalyst was synthesised
and thoroughly characterized by FT-IR, PXRD, SEM, TEM, XPS and BET surface area. The
first-order kinetic dependence with respect to the catalyst amount, partial pressures of CO2, and of H2
was observed and a plausible reaction mechanism is suggested.

Background:

CO2 hydrogenation to energy-rich products over heterogeneous metal catalysts has
gained much attention due to their commercial applications. Specifically, the first-row transition metal
catalysts are very rarely reported and discussed for the production of formic acid from the hydrogenation
of CO2.

Objective:

he aim is to investigate the heterogeneous catalyst systems, using solid soft base hydrotalcite
supported Cu metal-based catalyst for effective and selective hydrogenation of CO2 to formic
acid.

Methods:

The Cu –HT catalyst was synthesized and characterized by FT-IR, PXRD, SEM, TEM, XPS
and BET surface area in which the precise copper content was 0.00944 mmol. The Cu-HT catalysed
hydrogenation of CO2 was carried out in the autoclave.

Results:

The Cu-HT catalyst afforded maximum TOF of 124 h-1 under the employed reaction conditions:
100 mg catalyst, 60 °C, 60 bar total pressure of CO2/H2 (1:1, p/p) with 60 mL of mixed methanol: water
(5:1, v/v) solvent, without adding any additional base or promoter and was recycled 4 times by simple
filtration without compromising the formic acid yield. Formation of formic acid was observed to depend
on the amount of the catalyst, partial pressures of CO2 and H2, total pressure, temperature and time.

Conclusion:

Cu-HT based heterogeneous catalyst was found to be efficient for selective hydrogenation of
CO2 to formic acid and was effectively recycled four times after elegantly separating by simple filtration.
Lifestyle Intervention Enabled by Mobile Technology on Weight Loss in Patients With Nonalcoholic Fatty Liver Disease: Randomized Controlled Trial
Authors: Lim Su Lin , Johal Jolyn , Ong Kai Wen , Han Chad Yixian , Chan Yiong Huak , Lee Yin Mei , Loo Wai Mun
Published: April 2020

Background

The prevalence of nonalcoholic fatty liver disease (NAFLD) reaches up to 30% in the Asian adult population, with a higher prevalence in obese patients. Weight reduction is typically recommended for patients at high risk or diagnosed with NAFLD, but is a challenge to achieve.

Objective

We aimed to evaluate the effect of a lifestyle intervention with a mobile app on weight loss in NAFLD patients.

Methods

This prospective randomized controlled trial included 108 adults with NAFLD confirmed by steatosis on ultrasound and a body mass index ≥23 kg/m2 who were recruited from a fatty liver outpatient clinic. The patients were randomly allocated to either a control group (n=53) receiving standard care, consisting of dietary and lifestyle advice by a trained nurse, or an intervention group (n=55) utilizing the Nutritionist Buddy (nBuddy) mobile app in addition to receiving dietary and lifestyle advice by a dietitian. Body weight, alanine aminotransferase (ALT), aspartate aminotransferase (AST), waist circumference, and blood pressure were measured at baseline, and then at 3 and 6 months. Intention-to-treat and per-protocol analyses were used for statistical comparisons.

Results

The intervention group had a 5-fold higher likelihood (relative risk 5.2, P=.003, 95% CI 1.8-15.4) of achieving ≥5% weight loss compared to the control group at 6 months. The intervention group also showed greater reductions in weight (mean 3.2, SD 4.1 kg vs mean 0.5, SD 2.9 kg; P<.001), waist circumference (mean 2.9, SD 5.0 cm vs mean –0.7, SD 4.4 cm; P<.001), systolic blood pressure (mean 12.4, SD 14.8 mmHg vs mean 2.4, SD 12.4 mmHg; P=.003), diastolic blood pressure (mean 6.8, SD 8.9 mmHg vs mean –0.9, SD 10.0 mmHg; P=.001), ALT (mean 33.5, SD 40.4 IU/L vs mean 11.5, SD 35.2 IU/L; P=.004), and AST (mean 17.4, SD 27.5 U/L vs mean 7.4, SD 17.6 IU/L, P=.03) at 6 months.

Conclusions

Lifestyle intervention enabled by a mobile app can be effective in improving anthropometric indices and liver enzymes in patients with NAFLD. This treatment modality has the potential to be extended to a larger population scale.

Trial Registration

Australian New Zealand Clinical Trials Registry ACTRN12617001001381;
https://tinyurl.com/w9xnfmp
Lifestyle Intervention Enabled by Mobile Technology on Weight Loss in Patients With Nonalcoholic Fatty Liver Disease: Randomized Controlled Trial (Preprint)
Authors: Lim Su Lin , Johal Jolyn , Ong Kai Wen , Han Chad Yixian , Chan Yiong Huak , Lee Yin Mei , Loo Wai Mun
Published: April 2020

BACKGROUND

The prevalence of nonalcoholic fatty liver disease (NAFLD) reaches up to 30% in the Asian adult population, with a higher prevalence in obese patients. Weight reduction is typically recommended for patients at high risk or diagnosed with NAFLD, but is a challenge to achieve.

OBJECTIVE

We aimed to evaluate the effect of a lifestyle intervention with a mobile app on weight loss in NAFLD patients.

METHODS

This prospective randomized controlled trial included 108 adults with NAFLD confirmed by steatosis on ultrasound and a body mass index ≥23 kg/m2 who were recruited from a fatty liver outpatient clinic. The patients were randomly allocated to either a control group (n=53) receiving standard care, consisting of dietary and lifestyle advice by a trained nurse, or an intervention group (n=55) utilizing the Nutritionist Buddy (nBuddy) mobile app in addition to receiving dietary and lifestyle advice by a dietitian. Body weight, alanine aminotransferase (ALT), aspartate aminotransferase (AST), waist circumference, and blood pressure were measured at baseline, and then at 3 and 6 months. Intention-to-treat and per-protocol analyses were used for statistical comparisons.

RESULTS

The intervention group had a 5-fold higher likelihood (relative risk 5.2, P=.003, 95% CI 1.8-15.4) of achieving ≥5% weight loss compared to the control group at 6 months. The intervention group also showed greater reductions in weight (mean 3.2, SD 4.1 kg vs mean 0.5, SD 2.9 kg; P<.001), waist circumference (mean 2.9, SD 5.0 cm vs mean –0.7, SD 4.4 cm; P<.001), systolic blood pressure (mean 12.4, SD 14.8 mmHg vs mean 2.4, SD 12.4 mmHg; P=.003), diastolic blood pressure (mean 6.8, SD 8.9 mmHg vs mean –0.9, SD 10.0 mmHg; P=.001), ALT (mean 33.5, SD 40.4 IU/L vs mean 11.5, SD 35.2 IU/L; P=.004), and AST (mean 17.4, SD 27.5 U/L vs mean 7.4, SD 17.6 IU/L, P=.03) at 6 months.

CONCLUSIONS

Lifestyle intervention enabled by a mobile app can be effective in improving anthropometric indices and liver enzymes in patients with NAFLD. This treatment modality has the potential to be extended to a larger population scale.

CLINICALTRIAL

Australian New Zealand Clinical Trials Registry ACTRN12617001001381;
https://tinyurl.com/w9xnfmp
COVID-19: Home Quarantine is not Recommended for Confirmed and Suspected Patients (Preprint)
Authors: Lu Lin , Xu Aoshuang , Zhang Jiayao , Xie Sr Yi , Ye Sr Zhewei
Published: April 2020

UNSTRUCTURED

The outbreak of the 2019 novel coronavirus (COVID-19) cause huge pressure on health care infrastructure. We recommend that those diagnosed, suspected and in close contact with diagnosed patients should be separately collected and treated in a centralized manner. According to the progress of the disease in the course of treatment, the patients will be further shunted. With standardized procedures in test and treatment, treatment capacity can be improved rapidly with the lowest social costs. We hope that the recommendations we delineate can provide guidance for the future global anti-epidemic.
Web-Based Smartphone Algorithm for Calculating Blood Pressure From Photoplethysmography Remotely in a General Adult Population: Validation Study (Preprint)
Authors: Holyoke Paul , Yogaratnam Karthika , Kalles Elizabeth
Published: April 2020

BACKGROUND

Outside of a clinical setting, oscillometric devices make remote monitoring of blood pressure and virtual care more convenient and feasible. HeartBeat Technologies Ltd developed a novel approach to measuring blood pressure remotely after an initial blood pressure reading by a nurse using the conventional measurement method. Using a finger pulse oximeter, a photoplethysmogram wave is transmitted by Bluetooth to a smartphone or tablet. A smartphone app (MediBeat) transmits the photoplethysmogram to a server for analysis by a proprietary algorithm—the person’s current blood pressure is sent back to the smartphone and to the individual’s health care provider.

OBJECTIVE

This study sought to determine whether the HeartBeat algorithm calculates blood pressure as accurately as required by the European Society of Hypertension International Protocol revision 2010 (ESH-IP2) for validation of blood pressure measuring devices.

METHODS

ESH-IP2 requirements, modified to conform to a more recent international consensus statement, were followed. The ESH-IP2 establishes strict guidelines for the conduct and reporting of any validation of any device to measure blood pressure, including using the standard manual blood pressure instrument as a comparator and specific required accuracy levels for low, medium, and high ranges of blood pressure readings. The consensus statement requires a greater number of study participants for each of the blood pressure ranges. The validation of the accuracy of the algorithm was conducted with a Contec CMS50EW pulse oximeter and a Samsung Galaxy XCover 4 smartphone.

RESULTS

The differences between the HeartBeat-calculated and the manually measured blood pressures of 62 study participants did not meet the ESH-IP2 standards for accuracy for either systolic or diastolic blood pressure measurements. There was no discernible pattern in the inaccuracies of the HeartBeat-calculated measurements.

CONCLUSIONS

The October 4, 2019 version of the HeartBeat algorithm, implemented in combination with the MediBeat app, a pulse oximeter, and an Android smartphone, was not sufficiently accurate for use in a general adult population.

CLINICALTRIAL

ClinicalTrials.gov NCT04082819; http://clinicaltrials.gov/ct2/show/NCT04082819
Document-Engineering Methodology in Health Care: An Innovative Behavioral Science–Based Approach to Improve Patient Empowerment (Preprint)
Authors: Pohlmann-Eden Bernd , Eden Silke C
Published: April 2020

UNSTRUCTURED

Engaging patients in their treatment and making them experts of their condition has been identified as a high priority across many medical disciplines. Patient empowerment claims to improve compliance, patient safety, and disease outcome. Patient empowerment may help the patient in shared decision making and in becoming an informed partner of the health care professional. We consider patient empowerment to be in jeopardy if written medical information for patients is too complex and confusing.
We introduce document-engineering methodology (DEM) as a new tool for the health care industry. DEM tries to implement principles of cognitive science and neuroscience-based concepts of reading and comprehension. It follows the most recent document design techniques. DEM has been used in the aviation, mining, and oil industries. In these very industries, DEM was integrated to improve user performance, prevent harm, and increase safety.
We postulate that DEM, applied to written documents in health care, will help patients to quickly navigate through complex written information and thereby enable them to better comprehend the essence of the medical information. DEM aims to empower the patient and help start an informed conversation with their health care professional. The ultimate goals of DEM are to increase adherence and compliance, leading to improved outcomes.
Our approach is innovative, as we apply our learning from other industries to health care; we call this cross-industry innovation. In this manuscript, we provide illustrative examples of DEM in three frequent clinical scenarios: (1) explaining a complex diagnosis for the first time, (2) understanding medical leaflet information, and (3) exploring cannabis-based medicine. There is an urgent need to test DEM in larger clinical cohorts and for careful proof-of-concept studies, regarding patient and stakeholder engagement, to be conducted.
Closing the Psychological Treatment Gap During the COVID-19 Pandemic With a Supportive Text Messaging Program: Protocol for Implementation and Evaluation (Preprint)
Authors: Agyapong Vincent Israel Opoku , Hrabok Marianne , Vuong Wesley , Gusnowski April , Shalaby Reham , Mrklas Kelly , Li Daniel , Urichuk Liana , Snaterse Mark , Surood Shireen , Cao Bo , Li Xin-Min , Greiner Russ , Greenshaw Andrew James
Published: April 2020

BACKGROUND

Coronavirus disease (COVID-19) has spread globally with far-reaching, significant, and unprecedented impacts on health and everyday life. Threats to mental health, psychological safety, and well-being are now emerging, increasing the impact of this virus on world health. Providing support for these challenges is difficult because of the high number of people requiring support in the context of a need to maintain physical distancing. This protocol describes the use of SMS text messaging (Text4Hope) as a convenient, cost-effective, and accessible population-level mental health intervention. This program is evidence-based, with prior research supporting good outcomes and high user satisfaction.

OBJECTIVE

The project goal is to implement a program of daily supportive SMS text messaging (Text4Hope) to reduce distress related to the COVID-19 crisis, initially among Canadians. The prevalence of stress, anxiety, and depressive symptoms; the demographic correlates of the same; and the outcomes of the Text4Hope intervention in mitigating distress will be evaluated.

METHODS

Self-administered anonymous online questionnaires will be used to assess stress (Perceived Stress Scale), anxiety (Generalized Anxiety Disorder-7 scale [GAD-7]), and depressive symptoms (Patient Health Questionnaire-9 [PHQ-9]). Data will be collected at baseline (onset of SMS text messaging), the program midpoint (6 weeks), and the program endpoint (12 weeks).

RESULTS

Data analysis will include parametric and nonparametric techniques, focusing on primary outcomes (ie, stress, anxiety, and depressive symptoms) and metrics of use, including the number of subscribers and user satisfaction. Given the large size of the data set, machine learning and data mining methods will also be used.

CONCLUSIONS

This COVID-19 project will provide key information regarding prevalence rates of stress, anxiety, and depressive symptoms during the pandemic; demographic correlates of distress; and outcome data related to this scalable population-level intervention. Information from this study will be valuable for practitioners and useful for informing policy and decision making regarding psychological interventions during the pandemic.

INTERNATIONAL REGISTERED REPORT

DERR1-10.2196/19292
Metode pemberian ASI eksklusif memengaruhi status gizi
Authors: Yuniarti Windy , Wiboworini Budiyanti , Dewi Yulia Lanti Retno , Widardo Widardo
Published: April 2020

Exclusive feeding methods and their effect on nutritional statusBackground: Exclusive feeding could be given by human milk expression or direct breastfeeding methods. Recent studies indicate expressed human milk given by bottle in early infancy could lead to excess weight on the next stage of life. Objective: Determine the differences in nutritional status between exclusively fed infants with direct breastfeeding methods and a combination of breast pumping. Methods: An analytical observational study with the cross-sectional approach, conducted in Puskesmas Jalan Emas, Tangerang Regency, Banten. The subjects consisted of 68 infants from direct breastfeeding (DB) and the combination of breast pumping (KBP) groups, were selected by purposive sampling. The data obtained from the measurement of nutritional status and infants’ feeding history. Results: In WAZ, HAZ, and WHZ in DB were -0.48±0.7; -1.47±1.2; and 0.64±1.19 respectively. In WAZ, HAZ, and WHZ in KBP were 0.06±0.75; -1.66±0.85; and 1.23±1.05 respectively. The T-independent analytical test showed significant score (p) in WAZ, HAZ and WHZ indicators were 0.003; 0.470; and 0.035 respectively. Conclusions: In WAZ and WHZ indicators show significant differences between infants in DB and KBP groups. Meanwhile, in the HAZ indicator, there’s no significant difference between infants in DB and KBP groups.
An Investigation into the Attitudes and Practices of Nigerian Students towards the Use of English Language and Their Native Languages in a Culturally Diverse Society
Authors: Wappa John Peter
Published: April 2020

The study investigated the attitudes and practices of Nigerian students towards the use languages (English and native) in a culturally diverse society as the native languages are endangered because the English language is taking over the world linguistic environment as a lingua franca. Ten students who speak different Nigerian native languages were selected randomly from an international university (pseudonym) in Turkish Republic of Northern Cyprus (TRNC). A qualitative research method was adopted for the study using multiple sources of data collection, which include unstructured interview, personal stories, field notes and informal chats. The findings indicated that they acquired their native languages from birth at home, while they learn additional languages in their environment. They have positive attitudes towards the native languages, indicated by the value accorded them while English enjoys its official position. It was found out that the native languages were used for solidarity, prayers, identity and heritage preservation, whereas English language pertains the status of official language. In summary, Nigerian students studying in a culturally diverse context aim at preserving their language, culture, and identity by using it in their daily lives while they prefer using English language only for official purposes.
Assessment of building daylight systems considering sunscreens under real conditions of the sky
Authors: Nguyen Thi Khanh Phuong  , Solovyev Aleksey K.
Published: April 2020

Introduction. Lighting engineering is a complex scientific field which requires the generalization of knowledge in visual comfort evaluation, design and architectural solutions as well as in other areas including the humanities. Global ecological problems and the drive for Sustainable Development require achieving maximum energy efficiency from architectural designers. The tasks of designing daylight systems under real sky conditions cannot be solved without considering the problems of insolation and sunscreens. Russian and foreign standards cover long-put questions about the need to improve the daylight calculation method considering additional light reflected from adjacent surfaces under the clear and partially cloudy skies. The objective of the study is analysis and improvement of the daylight system calculation method considering sunscreens under intermediate sky conditions. Materials and methods. The methods of searching and selecting relevant literature in international abstract databases with well-developed tools for thematic search as well as analytical methods are described. Results. A method for calculating daylight system considering sunscreens under the intermediate sky conditions is suggested. The analysis of the obtained formulae confirmed the proposed theory: under the influence of direct sunlight, reflection from adjacent surfaces significantly increases the daylight level in a room. Conclusions. Assessment of daylight in a room under the intermediate sky conditions should take into account a reflection of the direct sunlight. Correcting the problem under conditions of the CIE overcast sky model in the calculation is associated with the availability of a light climate database. This approach makes it possible to formulate the criteria for a dynamic daylight assessment. Combination of an artificial lighting system with an automatic control mode guarantees the requirements of indoor illuminance and energy saving.
Mathematical modeling of the unsteady moisture condition of enclosures with application of the discrete-continuous approach
Authors: Gagarin Vladimir G. , Zubarev Kirill P.
Published: April 2020

Introduction. The paper considers mathematical models developed by K.F. Fokin, A.V. Lykov, V.I. Lukyanov, V.N. Bogoslovskiy, and H.M. Künzel and shows the advantages of using the moisture potential as compared with separate consideration of the transfer potentials. An analytical expression for the moisture potential F developed by V.G. Gagarin and V.V. Kozlov is given. Materials and methods. The article formulated a differential moisture transfer equation with time-constant coefficients and and described boundary conditions. An analytical expression determining the moisture potential using the discrete-continuous approach was obtained. Results. The article compares some calculation methods on the theory of moisture potential F for the single-layer aerated concrete enclosure, the two-layer brick wall, as well as two composite facade heat-insulation systems with external plaster layers with heat-insulation of mineral wool and foamed polystyrene. The solution of the unsteady equation of moisture transfer by the finite difference method using an explicit difference scheme and by the discrete-continuous method, the solution of the stationary equation of moisture transfer are considered. Conclusions. The moisture distribution obtained using the discrete-continuous approach, both quantitatively and qualitatively, coincides with the moisture distribution by the finite difference method. However, this distribution is obtained by the final formula without using the numerical method, which simplifies the calculation. The scientific novelty of the research consists in the development of a mathematical model based on the moisture potential F as well as in solving the equation of the unsteady moisture transfer through the discrete-continuous approach. The possibility of obtaining moisture distribution over the thickness of the enclosure according to the obtained formula is the practical relevance of the research.
Destruction of buildings and use of materials from renovated urban territories
Authors: Kolodyazhny Sergey A. , Zolotukhin Sergei N. , Abramenko Anatoly A. , Artemova Yekaterina A.
Published: April 2020

Introduction. Reuse of construction materials, products, and structures from demolished buildings and installations is an actual problem. The solution to it will improve the ecological situation. The study is aims at the determination of the causes of urban area renovation and searches for the most efficient technologies of building demolition with the reuse of the generated materials, products, and structures.

Materials and methods. The study used systematization, structural analysis, comparative analysis, a theoretical generalization of the data obtained in a detailed analysis of literary and statistical sources, field surveys of objects. When field examining, photography methods were used.

Results. Existing technologies of the building demolition, construction waste recovery, and reuse of construction materials generated using innovative item-by-item demolition technologies were revealed and systematized. Causes and main trends of urban territory renovation were analyzed. The paper studied Russian and foreign technologies of the building and installation demolition. The pros and cons of various demolition types are shown in terms of their environmental friendliness and economic efficiency.

Conclusions. The experience of constructing low-rise buildings and intrasettlement roads showed that the item-by-item disassembly of buildings using modern equipment and machinery with the subsequent reuse of construction materials, products, and structures is efficient, economical, and environment-friendly. It is proven that the reuse of construction materials, products, and structures results in a significant reduction in the cost of erected installations. The results of the study can be applied in low-rise construction around the world.
Finding one's way: contemporary churches of Ryazan in the works of priest Konstantin Kamyshanov
Authors: Knyazeva Marina V. , Korobova Anastasia V.
Published: April 2020

Introduction. The research goal is to identify and analyze the architectural features of the orthodox church buildings, designed and built in Ryazan since the early 2000ies. A number of objectives are to be accomplished to achieve this pre-set goal: one must identify and study the church buildings constructed in Ryazan, analyze the space-planning solutions and break them down into typological groups; besides, one should study the biography of their architect, as his professional track record influences the city’s historical and architectural appearance. This research is focused on contemporary church architecture exemplified by orthodox church buildings.

Materials and methods. Field studies serve as the backbone of this research which encompasses fact finding and photographic recording of the source material, information analysis and generalization, tabulation, making conclusions and formulating the opinion.

Results. The co-authors have analyzed the problems of contemporary church architecture and made a brief analysis of the history of orthodox church building in Ryazan. The overview encompasses 12 orthodox church buildings constructed in 2000–2014, as well as the key facts and dates associated with their construction. The co-authors have also identified compositional and other unique features of the new church buildings. They have outlined the milestones in the creative biography of the architect who designed these items of contemporary church architecture.

Conclusions. The research findings comprise a scholarly insight into contemporary church architecture. The analysis of new church buildings has helped to identify the features, peculiarities and architectural techniques, applied by the architect. The features, identified by the co-authors, define the appearance/typology of contemporary church buildings and their constructions.
Sound insulation design of the thin partitions on the base of concentrated parameters model
Authors: Saltykov Ivan P.
Published: April 2020

Introduction. The theoretical and practical approach on the base of the discrete parameter's method to the acoustic insulation of the thin partitions by Candidate of Science, Prof. Zakharov A.V. is given in this issue. The method allowed to develop a logically conclusive and consistent physical airborne sound insulation model for one-layered massive and light partitions either. This issue concentrates on providing of the engineer calculation technique of the sound insula-tion for the thin partitions and, also, on comparison of the technique's results with the computations by the current normative documents.

Materials and methods. The application of the same “Mass Action Law's” formula both for the normal and the oblique noise wave's incidence on the sound isolating plate, regardless the sound waves angles, is mathematically and physically approved. The essence of the concentrated parameters, such as concentrated and reduced material's mass, is revealed. The equations of momentum conservation law and kinetic energy conservation are used to obtain the coefficient of the oscillation velocity transmission. The formulas for airborne sound insulation at the diapasons before and after the sound wave's coincidence frequency are written.

Results. The damping air property's influence on the thin partition's sound insulation is considered, and it's formulas are represented. The formulas for taking into account the reduction of sound insulation at the resonances in sound protective slab or in a partition are also given. The general equation for the thin partition's sound insulation by the method of localized (discrete) parameters are derived. The example of detailed calculation of the sound isolation of the thin asbestos-cement partition is demonstrated. The comparison between the medial three octave deviations of the sound isolation values and the experimental results in case of the SP (Russian normative document) method and in case of the introduced author's method for the different construction materials is represented.

Conclusions. The proposedsound insulation calculation method for the thin light partitions, which is based on the concentrated parameters model, gives very close to experiments results. So, it enables to find the insulation figures across the entire standard frequency range, according to the initial physical and technical materials' and constructions' features.
Computational fluid dynamics analysis for thermal-wind environment simulation of urban street in Hanoi city
Authors: Le Minh Tuan  , Shukurov Ilkhomzhon S.
Published: April 2020

Introduction. One of the most important tasks in architecture and urban planning is to create the most optimal, comfortable and safe environment for human's live, work and leisure. This issue cannot be solved without taking into account the environment factor such as temperature and wind in a city. Modeling of the urban thermal-wind regime has been carried out to assess the temperature and air speed of the city streets of Hanoi.

Materials and methods. Computational Fluid Dynamics (CFD) uses numerical methods to solve fluid mechanics equations by using a computer model to predict flow fields. In this study, author has used ANSYS 19.1 of the FLUENT software package to conduct the model analysis of urban street thermal environments. The study conducted a series of experimental procedures in urban street alleys that were oriented towards placement in the urban area of Trung Hoa Nhan Chinh in the Thanh Xuan district, Hanoi cit.

Results. The highest temperatures were observed around the southeast side of the buildings in the urban area of Trung Hoa Nhan Chinh. Thus, a decrease in building density and maintaining the distance between buildings will contribute to the movement of the wind to cool city streets.

Conclusions. The greatest contribution to the work has been created by using a micro-weather station. Analysis of the assessment of the surrounding buildings, landscaping, shade and human activities can recommend measurable improvement the thermal comfort of the streets.
Knowledge Mobilization for Impact: A Multi-Case Study of Education Organizations
Authors: Malik Sofya
Published: April 2020

Using a multi-case design, this study draws on empirical evidence and literature to analyze the knowledge mobilization approaches in educational organizations. The sample consists of four different types of education organizations in Ontario, Canada: a school board, a university, a not-for-profit, and a professional association. Data sources include publicly available websites and documents (n = 63) and key informant interviews (n = 18). Although research impact was operationalized and observed differently in these organizations, measures of impact were found to be ineffectual in all cases. This article validates the findings of existing studies that have found that there are limited instrumental uses of research, wherein research directly influences policy and practice decisions. The study calls for a careful discernment and applicability of research impact.
Russian geographical names on the map of Аntarctica as a cultural heritage site. To the 200th anniversary of the discovery of Antarctica
Authors: Elchaninov A.I.
Published: April 2020

The article is devoted to the discovery of the Antarctic by Russian navigators, the study, mapping and designation of its shores and adjacent islands. Russian names were given to many new found geographic features. The list of some Russian geographical names is shown on the map of Antarctica. The maps of the Bellingshausen–Lazarev sailing expedition in 1819–1821 are given; the Russian geographical names are highlighted on them. The article is also devoted to the first Russian Antarctic expedition of 1819–1821, the discovery of the Antarctic by Russian navigators F. F. Bellingshausen and M. P. Lazarev on the sloops "Vostok" and "Mirny", the study, mapping and marking of its shores and adjacent Islands. The expedition discovered 29 Islands. The discoverers assigned Russian names to many of new found geographic objects of Antarctica. These names are highlighted in the article. The following maps are presented
Patologías ortográficas de la publicidad exterior en la zona comercial del municipio de San José de Cúcuta
Authors: Ovalles Pabón Liana Carolina
Published: April 2020

Es común encontrar en los anuncios de la ciudad de Cúcuta con errores ortográficos los cuales desdibujan la función publicitaria de las piezas graficas expuestas. Estudios recientes presentan los errores ortográficos en la publicidad como una alternativa didáctica para la formación de los diseñadores gráficos, pero aún no existe un antecedente que permita abordar la problemática desde Cúcuta como ciudad fronteriza y eje comercial. El proyecto busca reconocer la importancia de los criterios ortográficos para comerciantes y consumidores de la publicidad exterior visual presente en el área comercial del centro de la ciudad de Cúcuta. En primer momento se analizó la normatividad, posteriormente, la muestra fotográfica realizada en las rutas de muestra definidas, un análisis estadístico de la información recolectada a través del instrumento de la encuesta aplicada en salidas de campo y un análisis comparativo de las principales muestras estudiadas. Se identificó el desconocimiento de la norma en el contexto urbano, dentro de las muestras tomadas se puede destacar que los errores más frecuentes son en redacción de textos cortos de alto impacto en el consumidor (puntuación y gramática), ausencia de acentos ortográficos en vallas, banners y fachadas, descuido y negligencia en letreros con letras faltantes, escritura inadecuada, palabras fuera contexto, problemas ortográficos en anuncios, inapropiado uso de las mayúsculas. Se determina que dentro del proceso de comercialización lo más importante es el producto o servicio, se dejan de lado los criterios publicitarios en el proceso y la ortografía no se tiene en cuenta en la publicidad porque se ve como una estrategia para atraer más consumidores.
Una mirada a la aplicación de los principios de contabilidad generalmente aceptados y a las Normas Internacionales de Información Financiera en las Pymes de Cúcuta y su Área Metropolitana
Authors: Díaz Ortega Nubia Isabel
Published: April 2020

Las Normas Internacionales de Información Financiera (NIIF) son un conjunto de estándares y guías de calidad que se usan para preparar y reportar la información contable de la empresa, sin embargo, los principios de contabilidad generalmente aceptados rigen las prácticas contables actuales en la empresa. La aplicación de las (NIIF) permite proyectar un proceso contable sujeto a los posibles cambios que se presentarían en el proceso contable en general. El objetivo del presente estudio fue caracterizar el estado actual de los principios generales de la contabilidad y las (NIIF) en la mediana empresa de Cúcuta y su Área Metropolitana antes de la entrada en vigencia de las (NIIF). Se utilizó el análisis de carácter documental y descriptivo fundamentado en los postulados teóricos de Bustamante (2013), Flórez (2013), Fuentes (2013), entre otros. Acompañado de un trabajo de campo con un diseño no experimental, transeccional, conformado por una muestra de 64 medianas empresas. Se utilizó la encuesta como instrumento de recolección de datos construida con 30 ítems con cinco posibilidades de respuesta, instrumento validado por juicio de expertos. Las medianas empresas aplican los principios de contabilidad de una manera alta y la implementación de las (NIIF) es muy baja tanto en su cronograma, principios, tecnología, capacitación, entre otros. Las medianas empresas se encuentran rezagadas en el nuevo proceso de implementación de las (NIIF) que presentarán cambios en los estados financieros por la aplicación de nuevos principios de valoración, medición y presentación de la información financiera.
Keyword Extraction for Search Engine Optimization Using Latent Semantic Analysis
Authors: HORASAN Fahrettin
Published: April 2020

It is now difficult to access desired information in the Internet world. Search engines are always trying to overcome this difficulty. However, web pages that cannot reach their target audience in search engines cannot become popular. For this reason, search engine optimization is done to increase the visibility in search engines. In this process, a few keywords are selected from the textual content added to the web page. A responsible person who is knowledgeable about the content and search engine optimization is required to determine these words. Otherwise, an effective optimization study cannot be obtained. In this study, the keyword extraction from textual data with latent semantic analysis technique was performed. The latent semantic analysis technique models the relations between documents/sentences and terms in the text using linear algebra. According to the similarity values of the terms in the resulting vector space, the words that best represent the text are listed. This allows people without knowledge of the SEO process and content to add content that complies with the SEO criteria. Thus, with this method, both financial expenses are reduced and the opportunity to reach the target audience of web pages is provided.
Curve/Probabilistic Fitting of Damage Metrics for Al-7075 Materials Behavior by Using Electromechanical Impedance Method
Authors: HAYDARLAR Gökhan , TEKKALMAZ Mesut , SOFUOĞLU Mehmet Alper
Published: April 2020

The purpose of structural health monitoring is to provide information by making a simultaneous diagnosis of the status of the structure. Despite aging, environmental conditions and unforeseen circumstances, the construction should remain as specified in the design. Changing the environmental conditions causes the sensor and the host structure to change material properties. It is essential to take into account environmental conditions to prevent misdiagnosis. Therefore, the real cause of the change can be determined.In this study, the behavior of constrained piezoelectric wafer active sensor (PWAS)/Al 7075 was investigated by using electromechanical impedance method (EMI) under changing environmental conditions. Numerical studies on this material in the literature are limited and all the experimental/ numerical results are compensated for the temperature effect and analyzed using curve/probabilistic fitting approach for the first time. The sample used in the experimental work was modeled in ANSYS finite element program. In the experimental and numerical results, it has been observed that as the temperature decreases, the frequency shifts to the right and the amplitude increases. The experimental and simulation results were nearly the same. The temperature effect was compensated using the compensation algorithm for experimental and numerical studies. The results were compared using damage metrics. The experimental results analyzed using a curve/probabilistic fitting approach
China, Rehabilitating Festivals
Authors: Newbold Chris , Xiang Meng
Published: April 2020

It is to be expected that in a country with a five thousand year history, 56 different ethnic groups, and a population of 1.4 billion people, festivals will play a major part in both modern and traditional cultural life in China. Understandably a great many festivals have come and gone, most others have evolved and changed over the centuries, the combination of religious influences, cultural differences and political and economic changes across a vast nation has given China a huge range of festive traditions. Many of these festivals such as Lantern Festivals, Dragon Boat Festivals and Chinese New Year are well known and have been exported around the globe as Chinese diaspora have moved and settled. A great many festivals in China are related to their ethnic and regional origins and are hence little known in other parts of the country let alone across the world. As we shall see, an important factor in understanding festivals in contemporary China is the arrival of the Western events calendar, where Christmas Day, Valentine’s Day, and Halloween, have come to be the significant dates in the year for the younger urban population, inevitably driven by the demands of commercialism and the media.
A Holy Week Carnival, The Iberoamerican Theater Festival of Bogotá
Authors: Vignolo Paolo
Published: April 2020

This chapter explores the entangled relations of a contemporary and post- traditional festival with a much older festive substrate associated with Holy Week and Carnival. In this sense it is not intended as a systematic study of the Iberoamerican Theater Festival of Bogotá (ITFB), much less as a summary of its more than two decade long history. My more modest goal is to read this festival as a material and rhetorical dispositif arising in response to a social crisis (Castro Gómez, 2011), closely related to what I have called elsewhere regimes of festive alteration (Vignolo, 2015: 138-159): 1 The fiesta-bonanza, distinguished by excess and associated with human, territorial, and resource exploitation on the frontier of capitalist expansion (Braudel, 2002; Taussig, 1980: xii). 2 the fiesta-revolution, dominated by the trope of inversion and aiming to undermine the status quo, disrupt the social order, and scramble established dichotomies (Bakhtin, 1984; Eco, 1984). 3 The fiesta-passion, where the ritual sacrifice of a savior figure provides the community with a chance to separate from the conflicts that threaten its unity, through the trope of transfiguration. (Girard 1977; Esposito, 2003). Intertwined, superimposed, and interarticulated, they encompass practically all the festive events of the last 30 years in Colombia, it would be possible to trace their genealogy back to colonial times (Vignolo, 2015: 139).
Improvement of the Ability of High School Physics Teachers in Tanah Datar District in the Making of Teaching Materials with Scientific Literacy
Authors: Hidayati Hidayati Hidayati
Published: April 2020

Pengajaran di sekolah harus dilaksanakan sesuai Kurikulum yang berlaku. Namun, kondisi nyata menunjukkan bahwa dalam melaksanakan Kurikulum 2013 revisi 20017, ada beberapa masalah. Salah satu solusi dari masalah yang ada adalah mengembangkan bahan ajar fisika bermuatan literasi saintifik pada guru Fisika SMA di kabupaten Tanah Datar. Tujuan dari kegiatan ini adalah untuk membantu guru Fisika SMA di kabupaten Tanah Datar dalam mengembangkan bahan ajar fisika bermuatan literasi saintifik. Peserta adalah 34 guru fisika SMA yang menjadi anggota MGMP fisika SMA di kabupaten Tanah Datar. Instrumen untuk mengumpulkan data terdiri dari pretes dan postes, lembar validasi bahan ajar. Data dianalisis dengan analisis statistik deskriptif dan uji perbandingan berkorelasi. Berdasarkan hasil analisis data dapat dinyatakan bahwa: 1). Dalam melaksanakan PKM, ada 12 bahan ajar yang dihasilkan dalam bentuk bahan ajar bermuatan literasi saintifik, 2). Bahan ajar bermuatan literasi saintifik yang ditulis guru-duru adalah valid, dan 3). Implementasi pengembangan bahan ajar bermuatan literasi saintifik dapat diklasifikasikan efektif untuk meningkatkan pemahaman guru sains pada materi bahan ajar.
Workshop on High Order Thinking Skills Mathematical Problems to Increase Teachers Teaching Abilities
Authors: Ahmad Defri , Syafriandi Syafriandi , Rosha Media
Published: April 2020

Abstract – To accomodate High Order Thinking Skills (HOTS) in classrom, we need to consider curricula, learning process, and assesment. Learning process and assesment have an essential requirement i.e. teacher’s ability. Government has done some activity to increase teacher’s ability to apply HOTS in classrom, but teachers need more. To keep their motivation and ability, teachers need a continue activity related to HOTS. Lecturer is an academic expert who teach in university level. In Indonesia, service to community is one of obligation for lecturer. Hence increasing teachers understanding about HOTS is one of lecturer’s duty. Training and workshops has been designed to rose teachers ability in creating HOTS problems and teaching using those problems. In this activity, teachers are studied about HOTS concept, the government policy about HOTS, solve some HOTS problem in National level test, and how to create HOTS base mathematical problems. For the next activity, teachers are asked to create some HOTS base mathematical problems, and design a learning trajectoty/ design to put their HOTS problem in learning process. Lastly, base on teacher’s satisfaction questionnaire, teachers are very happy to get this activity for the activity’s programme, mastery of topics, and teacher ‘s needs.
A Preliminary Study : The Urgency of Scientific Paper of Science Teacher
Authors: Putri Rahmah Evita
Published: April 2020

PP No. 74 of 2008 states that salary is the right that is received by the teacher for his work from the education provider or education unit in financial form on a regular basis in accordance with statutory regulations. Based on Ministerial Regulation (Permen) no. 19 of 2009 which states that promotion or class must use scientific work, and it would be better if the scientific work can be published, where one of the scientific works that can be made by teachers can be Classroom Action Research (CAR), where research should not foreign to the teacher, where by researching the teacher can really solve a problem that occurs in students who are in the teacher's education, however, if it only stops until writing a CAR report, of course the results of the research will be unfortunate because it is not published, so that it cannot be a reference for further research or cannot motivate teachers from other regions to carry out research. By writing scientific articles and publishing these articles in scientific journals nationally and internationally it will certainly be able to share knowledge for allied researchers and be a motivation for other teachers to carry out research and publish the results of the research. The results of the field research show that science teachers are still very taboo about writing scientific articles, especially the publication of scientific articles that have been made. The survey shows that only a portion of natural science teachers have implemented CAR, and less than a quarter of these teachers have written scientific articles. It can be concluded that writing scientific articles is very much needed and must be carried out by teachers especially science teachers. So that later teachers can always carry out research on a regular basis.