bluuebunny/crossref_metadata_2025_split huggingface dataset:
Comparative high-resolution spectroscopy of M dwarfs: Exploring non-LTE effects
Authors: Olander T. , Heiter U. , Kochukhov O. 
Published: March 2021

Context.M dwarfs are key targets for high-resolution spectroscopy and model atmosphere analyses because of the high incidence of these stars in the solar neighbourhood and their importance as exoplanetary hosts. Several methodological challenges make such analyses difficult, leading to significant discrepancies in the published results.Aims.The aim of our work is to compare M dwarf parameters derived by recent high-resolution near-infrared studies with each other and with fundamental stellar parameters. We also assess to what extent deviations from local thermodynamic equilibrium (LTE) for iron and potassium influence the outcome of these studies.Methods.We carry out line formation calculations based on a modern model atmosphere grid appropriate for M dwarfs along with a synthetic spectrum synthesis code that treats formation of atomic and molecular lines in cool-star atmospheres including departures from LTE. We use near-infrared spectra collected with the CRIRES instrument at the ESO VLT as reference observational data.Results.We find that the effective temperatures obtained with spectroscopic techniques in different studies mostly agree to better than 100 K and are mostly consistent with the fundamental temperatures derived from interferometric radii and bolometric fluxes. At the same time, much worse agreement in the surface gravities and metallicities is evident. Significant discrepancies in the latter parameters appear when results of the studies based on the optical and near-infrared observations are intercompared. We demonstrate that non-LTE effects are negligible for Fe Iin M-dwarf atmospheres but are important for K I, which has a number of strong lines in the near-infrared spectra of these stars. These effects, leading to potassium abundance and metallicity corrections on the order of 0.2 dex, may be responsible for some of the discrepancies in the published analyses. Differences in the temperature–pressure structures of the atmospheric models may be another factor contributing to the deviations between the spectroscopic studies, in particular at low metallicities and high effective temperatures.Conclusions.High-resolution spectroscopic studies of M dwarfs are yet to reach the level of consistency and reproducibility typical of similar investigations of FGK stars. Attention should be given to details of the line formation physics as well as input atomic and molecular data. Collecting high-quality spectra with a wide wavelength coverage of M dwarfs with known fundamental parameters is an essential step in benchmarking spectroscopic parameter determination of low-mass stars.
Nucleated Red Blood Cells as Markers of Perinatal Adaptation in Preterm Neonates Receiving Minimally Invasive Surfactant Therapy
Authors: Nitzan Itamar , Roberts Calum T. , Bhatia Risha , Mimouni Francis B. , Sehgal Arvind 
Published: March 2021

Objective The study aimed to assess the association of nucleated red blood cells (NRBC), a surrogate of intrauterine hypoxia, and elevated pulmonic vascular resistance (E-PVR) and oxygen requirement after minimally invasive surfactant therapy (MIST).
Study Design Retrospective study of a cohort of preterm neonates that received MIST in a single unit.
Results NRBC were measured in 65 of 75 (87%) neonates administered MIST during the period. In total, 22 of 65 (34%) infants had pre-MIST echocardiography (ECHO).Neonates with elevated NRBC (predefined as >5 × 109/L, n = 16) required higher post-MIST fraction of inspired oxygen (FiO2) than neonates with normal NRBC (<1 × 109/L, n = 17; FiO2 = 0.31 ± 0.10 and 0.24 ± 0.04, respectively, p = 0.02).NRBC correlated positively with % of time in right to left ductal shunt (r = 0.51, p = 0.052) and inversely with right ventricular stroke volume (r = −0.55, p = 0.031) and time to peak velocity to right ventricular ejection time ratio (r = −0.62, p < 0.001).
Conclusion Elevated NRBC are associated with elevated FiO2 after MIST and elevated E-PVR. Intrauterine hypoxia may impact postnatal circulatory adaptations and oxygen requirement.
Key Points
An expansion of well tempered gravity
Authors: Linder Eric V. , Appleby Stephen 
Published: March 2021

Abstract
When faced with two nigh intractable problems in cosmology
— how to remove the original cosmological constant problem and how
to parametrize modified gravity to explain current cosmic
acceleration — we can make progress by counterposing them. The
well tempered solution to the cosmological constant through
degenerate scalar field dynamics also relates disparate Horndeski
gravity terms, making them contrapuntal. We derive the connection
between the kinetic term K and braiding term G3 for shift
symmetric theories (including the running Planck mass G4),
extending previous work on monomial or binomial dependence to
polynomials of arbitrary finite degree. We also exhibit an example
for an infinite series expansion. This contrapuntal condition
greatly reduces the number of parameters needed to test modified
gravity against cosmological observations, for these "golden"
theories of gravity.
A pilot study on waste management services for Mixed Density Housing Scheme. Case study: Section 7, Shah Alam, Selangor, Malaysia
Authors: Abd Khair Mohammad Syahir Aiman , Ahmad Puziah 
Published: March 2021

Abstract
The rapid growth of population in urban areas resulted in a higher amount of waste generated yearly. According to the Solid Waste Management and Public Cleansing Corporation (SWCorp), in 2018, Malaysians generated 38, 142 tonnes of waste per day with an average of 0.83 kg/capita/day for a household in the urban area. Malaysia, with a population of 32.4 million, 76% of the entire population are living in urban areas (Department of Statistic, 2018), this figure is worrying. This pilot study explores and evaluates the perspectives of governance on waste management processes and practices for urban residents; in a mixed density housing scheme. A survey was conducted on 30 respondents of a mixed density housing scheme in Section 7, Shah Alam, Selangor. The data then analysed through reliability test analysis. There were four (4) key variables being put forward for this study; services and practices, socio-economic and well-being, stakeholders and environment. The result of the analysis has found out that, the variables for waste management services for mixed density housing scheme are reliable with the respondent’s feedback. However, some questions are not compatible to be analysed in parallel with other questions.
Carbon dioxide emissions and institutional factors in developing nations: An application of the GMM technique
Authors: Jalil Siti Ayu , Wan Mohamed Wan Mazlina 
Published: March 2021

Abstract
Thirty-seven (37) industrialized countries are committed to cut greenhouse gases by 5.2% over a period since 2008-2012. However, understanding the needs of developing countries and their commitment towards social and economic development goals, UNFCCC has somehow adopted a principle of “common but differentiated responsibilities Economic activities are fundamentally linked to economic growth which is much needed in these nations, thus the parties allow them to grow to meet their ends. But this does not mean the countries should not be responsible for their action. These nations signatory to the Kyoto Protocol has also demanded them to put effort to cut carbon emissions. This study employed a dynamic panel data model that based on the Arellano and Bond Generalized Method of Moments (GMM) technique to investigate the impact of the Kyoto Protocol and four institutional factors political stability, property rights, corruption and freedom of trade on per capita CO2 emissions in 126-developing nations. Three determinants i.e. Kyoto Commitment, Kyoto Clean Development Mechanism and freedom of trade were found to have negative significant effect on CO2 emissions. Thus, the empirical findings confirm that the three institutional factors are relevant in cutting the CO2 emission.
Cadmium Water Pollution Associated with Motor Vehicle Brake Parts
Authors: Talebzadeh Fatemeh , Valeo Caterina , Gupta Rishi 
Published: March 2021

Abstract
With increasing industrial growth, there is a greater need to understand factory production processes, the resulting products, and the pollution caused by the fabrication processes leading to these products. Cadmium (Cd) is used in the electro-less Nickel-Cadmium bath phase of the brake manufacturing process, which provides the brake coating that produces corrosion-resistant brake parts. During the operation, the friction created during braking corrodes the Cd layer and releases Cd particles into the environment. Cd particles can enter water bodies and drinking water supplies through stormwater runoff. This research will first examine Cd pollution associated with motor vehicle brake discs from cradle to grave. Following this comprehensive look into the role of Cd in the brake manufacturing process as well as Cd speciation in natural waters, three interventions are proposed to prevent Cd pollution associated with brake parts: (i) Carbon-reinforced silicon carbide as an alternative for metal based brake parts; (ii) bacteria “coating” instead of Cd coating; (iii) permeable roads that can effectively remove Cd from runoff with nearly 98% reduction. A discussion into the advantages and disadvantages of each proposition are provided with this presentation.
Comprehensive Pollution Analysis of Contaminated Sediment in an Urban River, China
Authors: Huang Senjun , Wei Jun , Ning Shunli , Fang Haifeng , Li Shiyi , Ye Shenghua , Zhou Xiaoyong 
Published: March 2021

Abstract
Sediment pollution has been one of the most serious water pollution problems in urban rivers, called the ‘autogenous pollution’, which has also caused critical ecological risk to river as well as surrounding environment. Therefore, quantitative analysis of sediment pollution is of great importance to come up with a treatment scheme. In this study, comprehensive pollution analysis of contaminants has been conducted for various vertical stratifications using 86 columnar samples with depth of 3∼4 m. Pollution assessments of organic matter, total nitrogen, total phosphorus, toxic substances and heavy metal elements were conducted. Then, the comprehensive pollution depths can be determined based on pollution assessment of each vertical layer, which shows that the maximum pollution depth can be up to 2.0 m, 3.0 m and 3.0 m for Reach A, Reach B and Reach C, respectively. The results has been used to determine the spatially changing thickness in environmental protection dredging in Maozhou River.
MSW in a Circular Economy: 2020 - 2035 Scenarios for the City of Oslo, Norway
Authors: Wang Liang , Becidan Michaël 
Published: March 2021

Abstract
The unfolding of Circular Economy principles will have consequences on the generation rate, amount, and composition of Municipal Solid Waste (MSW) as well as the preferred methods to treat them. In this work, four plausible scenarios on the future of MSW for the period 2020 – 2035 have been developed for the City of Oslo, Norway. The scenario’s consequences on (1) MSW amounts and properties and (2) the treatment methods, i.e. Waste-to-Energy (WtE), material recycling and biogas production have been evaluated. The main results can be summarized as such: (1) the evolution of both population and consumption (i.e. waste generated per inhabitant) will have a large impact; (2) meeting EU material recovery target (65% for MSW in 2035) means that several waste fractions have to be recycled at high levels, and this will be challenging without significant logistical and/or treatment capacity changes and/or technological breakthroughs, (3) in 2 out of 4 scenarios, the biogas production capacity must be expanded with a new plant to reach the 65% recovery target, (4) a “business as usual” approach is not sufficient to reach the recovery targets, (5) the combustion properties of MSW to WtE will be affected by increasing recycling, probably towards lower energy contents and higher ash contents and (6) “what-if scenario” studies should be carried out at the city/regional level as specific constraints must be included to bring valuable information.
The Construction of Water-Sensitive Urban Design in the Context of Japan
Authors: Zhang Yajing , Shen Zhenjiang , Lin Yuming 
Published: March 2021

Abstract
Water Sensitive Urban Design (WSUD) is a critical sustainable development theory in the urban water environment, which is attracting more and more attention worldwide. Meanwhile, as an island country, Japan attaches great importance to water resources and water environment, and have achieved fruitful result in urban water management. Based on the framework of WSUD, this research introduces Japan’s practical experience from the perspectives of water source protection, flood control, and waterfront space landscape, aiming to summarise Japan’s experience and provide a new perspective. By explaining the thoughts of water sensitivity design contained in Japanese practice, this research expands the scope of WSUD, provides a meaningful research framework for Japanese researchers, and provides compelling cases for researchers on water-sensitive design around the world.
Does the Energy Internet Improve the Efficiency of Resource Allocation? ---Theoretical Mechanism and Case Analysis
Authors: Long G Q , Li S 
Published: March 2021

Abstract
This paper analyzes the resource allocation effect of the Energy Internet through four theoretical analysis frameworks: Cournot model, time and space heterogeneity, information asymmetry, and structural upgrading. The study found that there are four path mechanisms for the Energy Internet to improve the effect of resource allocation: (1) Significantly increase the main body of energy supply and increase the level of market competition; (2) Distributed power and storage technology optimize the space-time allocation; (3) Information sharing, Reduce information asymmetry and improve the efficiency of resource allocation; (4) Advocate clean replacement and promote the upgrading of energy structure. Combining the case verification mechanism of Tianjin Sino-Singapore Eco-City, and presenting policy implications.
Forecast of China’s Future Nuclear Energy Development and Nuclear Safety Management Talents Development
Authors: Xiao-ding LI , Yun-huan QU , Li-hui ZHANG , Yu GONG , Yi-man DONG , Guang-hui LI 
Published: March 2021

Abstract
Firstly analyzes the global energy development, analyzes the impact of carbon emission reduction on the global energy structure, and forecasts the future energy demand and nuclear energy development prospects in the future (by 2040). The growth rate will be higher than the average growth rate of energy; China is one of the countries with the strongest growth in nuclear energy. Then analyzes China primary energy production and consumption, the conclusion is that the absolute production and consumption of non-fossil energy is steadily increasing year by year. According to China’s “Two centenary goals” development goals and future global energy demand and structure (up to 2050) to measure the future installed capacity of nuclear powers, conclusion is that China “Two centenary goals” goals on nuclear power generation capacity is 3.08 million kWh, 10.15 million kWh; Based on the structure of global energy demand and China development policy, it is estimated that China nuclear power generation will be 0.4 million kWh by 2020 and 1.81 million kWh by 2050.Finally, according to the estimated nuclear power installed capacity under different scenarios, calculate the corresponding number of nuclear safety management talents in the future. The conclusion is that China should give full support to nuclear safety management talents development.
Effect of Fabric Orientations on Mechanical Properties of Hybrid Jute-Ramie Reinforced Unsaturated Polyester
Composites
Authors: Hamdan M H M , Siregar J P , Tezara C , Rusiyanto R , Oumer A N , Jaafar J , Zalinawati M 
Published: March 2021

Abstract
Jute and ramie fibre received significant attention from the researcher around the globe due to the excellent performance as reinforcement materials for the composite. The present work study the influence of the fabric orientation and layering sequence on the hybrid woven jute-ramie reinforced unsaturated polyester resin (UPE) on mechanical properties (tensile, flexural and impact). The composite sample was prepared via a hand lay-up method with a compression machine. Four (4) different orientation ready for the composite sample consists of 0 laminate, [0°/0°/0°/0°], cross-ply [0°/90°/90°/0]° laminate, angle-ply laminate [45°/-45°/45°/-45°] and quasi-isotropic laminate [0°/45°/-45°/90°]. Based on the finding on the current research, the effect of orientation for hybrid woven jute-ramie is apparent on the tensile testing — nonetheless, the influence of the woven orientation for flexural testing and charpy impact testing. Based on the tensile testing, the composite with the woven orientation of cross-ply yield the highest average tensile strength compared to the other composite. In the case of tensile modulus, the composite sample becoming more ductile when arranged to the orientation of angle-ply laminate and quasi-isotropic laminate. For the flexural testing and charpy impact testing, the entire composite yield almost similar value regardless of the type of woven arrangement.
SMART method for recommender system towards smart tourism and green computing
Authors: Sihotang D M , Hidayanto A N , Abidin Z , Diana E 
Published: March 2021

Abstract
Smart tourism is one component of smart village or smart city that aims to improve service quality of tourism. Smart tourism is expected to provide a better tourist experience for tourists by utilizing information technology. The purpose of this study is to develop for a culinary recommendation application to support smart tourism. Simple Multi-Attribute Rating Technique (SMART) was employed to develop the application which is based on geographic information systems. The application gives culinary places’ recommendation by considering several attributes, such as facilities, prices, menu variations, and distances (most recommender systems of culinary places do not use distance as the main attribute). In addition, this recommendation system is also one of the solutions in implementing green computing, namely “telecommuting” by reducing transportation emissions. Two test scenarios, namely user acceptance, and accuracy testing have been carried out. The user acceptance testing yielded 75.2% which indicated that the application was good, while the result of the accuracy testing was 83.33% which was considered high.
The Effect of Tapioca Flour Adhesives to the Biopellet Characteristics of Rice Husk Waste as Renewable Energy
Authors: Damayanti A , Musfiroh R , Andayani N 
Published: March 2021

AbstractThe abundance of rice husk waste in Indonesia and more than 50% of its cellulose content have the potential to become environmentally friendly and renewable energy, including biopellet. The purpose of this research aims to evaluate the addition of adhesives to the biopellet production. Tapioca flour used as adhesives which a concentration were 10%, 15%, and 20% (w/w) of rice husk waste. Densification process of biopellet production was used by pellet mill machine with a capacity of 120 kg/h. The quality of biopellet product can fulfill the Indonesian biopellet national standard namely SNI 8021:2014. The characterization of biopellet product was to determined the quality of the fuel, which including test of density, water content, fixed carbon content, volatile matter content, and caloric value. The results shows that the characteristics of biopellet of rice husk waste contained tapioca flour concentration (% w/w) 10, 15, and 20 were 8.18, 8.88, 9.18% for water content; 0.81, 0.9, 0.9 g/cm3 of density; 12, 11.17, 11.95% of fly ash content; and 4068, 4013, 4004 cal/g of caloric value. Rice husk waste has the potential as a biopellet solid fuel.
Increased aesthetic value of paper waste for wig making
Authors: Widowati T , Setyowati E , Prasetyaningtyas W , Wahyuni I E , Pangastuti N W 
Published: March 2021

Abstract
Paper waste derived from the campus environment is paper waste which is generally a waste of tasks. Through knowledge, creativity, and paper waste skills can be utilized into something useful, having high artistic value. The purpose of this research is to increase the aesthetic value of paper waste with the process of reuse as a learning medium for wig making. Through the utilization of paper waste with the reuse process is expected to make something useful and valuable art. Qualitative descriptive development research was conducted to increase the aesthetic value of paper waste as a medium of learning wig making in hairpiece courses that have art value with the reuse process. validity results by 5 experts with an average of 97% and final product assessment results by 50 students obtained an average of 87.2% based on indicators of usability, design, flexibility, beauty, and creativity expressed to increase the aesthetic value of paper waste with the process of recycling as a learning medium of wig making is very feasible.
Disperse dyes composition for ICOLLET product
Authors: Sholikhah R , Prasetyaningtyas W , Krisnawati M , Ilhsani A N N , Rachmawati R 
Published: March 2021

Abstract
The objectives of this study were 1) to determine the effect of the disperse dye composition on the ICOLLET finished product, and 2) to determine the best disperse dye for ICOLLET products on hycon polyester chiffon fabric. This experimental research has independent variables of disperse dyes composition. The disperse dyes concentrations were 20 grams, 40 grams and 60 grams, respectively, while the dependent variable was the obtained color of ICOLLET on the hycon polyester chiffon fabric in terms of the fabric absorbency to the disperse dyes, the obtained color of ICOLLET and the level of preference of ICOLLET dyed hijab. The control variable were tying method, dabbing method, equipment and the operator. The data collection method used in this research was observation. Single ANOVA was used to analysis the data. Based on the data analysis, it can be concluded that disperse dyes composition affected the ICOLLET obtained product on hycon polyester chiffon fabric and system with 60 gram disperse dyes has the most absorbency generated the best motive compared to others.
Local wisdom architecture approach on redesigning the Cirebon regent’s office
Authors: Santoso E B , Putro E P 
Published: March 2021

Abstract
Cirebon Regent’s Office which is located within the Cirebon Regency Government Office Complex requires a change in the zones of spatial functions, spatial development and circulation patterns so that people can easily access them and get better services. Based on these thoughts, there is a need for redesigning of the Regent’s Office. “Local Wisdom” Architectural Approach is an architectural approach that accommodates local cultural wisdom into architectural design concepts. The Cirebon Regency Government has already issued regulations on the application of local cultural wisdom to the architectural appearance of government buildings in Cirebon Regency. Based on data collection, analysis, and approaches, a design recommendation was obtained in the framework of redesigning the Cirebon Regent’s Office with the local wisdom architectural approach in accordance with user needs and policies developed in Cirebon District. In the subsequent design process, aspects of architectural planning and design that have been analyzed are used as guidelines.