bluuebunny/crossref_metadata_2025_split huggingface dataset:
Atomistic structure and dynamics of the human MHC-I peptide-loading complex
Authors: Fisette Olivier , Schröder Gunnar F. , Schäfer Lars V. 
Published: August 2020

Significance
The major histocompatibility complex class-I (MHC-I) peptide-loading complex (PLC) translocates cytosolic degradation products to the endoplasmic reticulum to load antigenic peptides onto MHC-I molecules. Stable peptide–MHC-I complexes are presented at the cell surface to mirror cellular contents for patrolling T cells, which protect against viral infections and cancer-causing mutations by inducing apoptosis in cells that expose nonself peptides. Due to its size and dynamic nature, the atomic-level details of the PLC remained unknown. We built an all-atom model of the human MHC-I PLC by combining the recent 9.9-Å resolution cryo-EM density with microsecond molecular dynamics simulations in a membrane and water environment (1.6 million atoms). The results provide unprecedented insights into the molecular underpinnings of our adaptive immune response.
Syntaxin 3 is essential for photoreceptor outer segment protein trafficking and survival
Authors: Kakakhel Mashal , Tebbe Lars , Makia Mustafa S. , Conley Shannon M. , Sherry David M. , Al-Ubaidi Muayyad R. , Naash Muna I. 
Published: August 2020

Significance
Rod and cone photoreceptors are highly polarized cells which rely on incompletely understood trafficking pathways to deliver and sort proteins into multiple outer segment subcompartments (disc, rim, and plasma membrane). Here we identify the SNARE protein syntaxin 3 as a trafficking component for both disc and rim proteins but not plasma membrane proteins. Our results suggest that syntaxin 3-mediated vesicle fusion is a convergence point for disc and rim protein trafficking and sorting. Furthermore, we find no evidence that eliminating syntaxin 3 affects cone photoreceptor trafficking, suggesting that divergent trafficking pathways in the two cell types may underlie their different outer segment structure. These studies significantly enhance our understanding of the unique and elegant cell biology of the photoreceptor.
Deconstructing the idea of language
Authors: Joubert Aurélie 
Published: August 2020

Abstract

Patois is a term used to refer to some varieties of language of contested legitimacy. Close to
dialect, it implies a nuance based on the diminished function and supposedly unpolished
form of the language used. The application of the term patois to French linguistic
communities is not accidental. It is a socio-historical process that can be analysed in parallel with the
implementation of language policies made to promote French as the sole language of a nation-state. This chapter
demonstrates that the application of this linguistic denomination is neither innocent nor objective. Indeed, the
semantic evolution of the term itself indicates an increasingly disparaging connotation which has led to a submissive
effect on the community of speakers of Occitan. Furthermore, a devaluing impact can be identified in the discourse of
speakers when referring to their own language. Thus, this chapter will establish the link between the ideological
notion of linguistic superiority of the national language and the micro-levelled declaration of speakers’ attitudes,
and will therefore highlight the connection between macro language policies and speakers’ socio-psychological
self-evaluation.
Publishing a grammar and literature anthology of a contested language
Authors: Di Stefano Andrea Francesco Daniele 
Published: August 2020

Abstract
The present essay reports the experience of applying a web-based system of fundraising such as
crowdfunding to publish a textbook for a local language (the variety of Piedmontese spoken in Biella and its
neighbourhood). Piedmontese is classified as an endangered language whose number of speakers is steadily decreasing.
Conversely, the mean age of speakers is increasing. Crowdfunding was chosen as a fundraising system with the aim of
supporting the publication of a Piedmontese grammar and anthology. The campaign was launched on the crowdfunding
platform Produzioni dal Basso on 2 September and terminated on 31 December 2015. The appeal was
posted at weekly intervals on the social network Facebook starting from the day of the campaign launch. Pages specific
for users with interest in Piedmontese were chosen for spreading the news. The appeal was spread also via private
messages whenever possible. Meanwhile, the news was also published several times in dedicated articles by newspapers.
The positive feedback by the supporters, who received copies of the book in return for contributions of a certain
size, ensured the actual publication of the grammar in December 2017. In conclusion, an up-to-date system, such as
that offered by the online crowdfunding platform, combined with the possibility of spreading the appeal through social
networks, gained an unexpected positive feedback from the public and was able to attract the interest of a number of
potential readers of the proposed text book.
Emotional contagion and its implications for animal welfare
Authors: Düpjan* Sandra , Krause Annika , Moscovice Liza R. , Nawroth Christian 
Published: August 2020

Abstract
Altering one’s emotional state in response to the emotional expressions of others, called emotional contagion, is a well-studied phenomenon in humans and many nonhuman animals. Here we describe the methods that are typically used to assess changes in the emotional state in demonstrators and the transmission of emotions to naïve observers. We then review the evidence for the transmission of positive and negative emotions in farm animals. We conclude by highlighting examples of how a better understanding of emotional contagion in farm animals can lead to novel and innovative interventions to improve their welfare.
An ECT image reconstruction algorithm based on object-and-background adaptive regularization
Authors: Yan Hua , Wang Yan , Wang Yifan , Zhou Yinggang 
Published: August 2020

Abstract
Electrical capacitance tomography (ECT) image reconstruction is an ill-posed inverse problem. Regularization methods are generally employed to solve the ill-posed problem, and the reconstructed image quality is seriously influenced by the selection of the regularization parameter. At present, a same regularization parameter is generally adopted for the whole reconstruction region, but the object region and the background region have different requirements on the regularization parameter, so it is difficult to obtain high-quality reconstruction images. In order to solve this problem, an image reconstruction algorithm based on object-and-background adaptive regularization, the OABAR algorithm for short, is proposed in this paper. The basic idea of the proposed OABAR algorithm is to dynamically divide the reconstructed region into object and background regions according to the reconstructed gray values. This is followed by iteratively reducing the regularization parameter values corresponding to the object region on the one hand to improve the detail reconstruction ability of the object region. On the other hand, a fixed regularization parameter value larger than the initial regularization parameter is provided for the background region to improve the smoothing ability of the background region. The iterative process is terminated when the change trend of capacitance residual norm first reverses or the number of iterations reaches the preset maximum value. If the change trend of capacitance residual norm does not reverse within the preset maximum number of iterations, the reconstructed result with the minimum capacitance residual norm is taken as the final result. Simulation and experimental tests were carried out and the results verify the effectiveness of the proposed algorithm on improving ECT image reconstruction quality.
Horizon thermodynamics in

theory *
Authors: Feng Haiyuan , Yang Rong-Jia 
Published: August 2020

Abstract
We investigate whether the new horizon first law still holds in

theory. For this complicated theory, we first determine the entropy of a black hole by using the Wald method, and then derive the energy of the black hole by using the new horizon first law, the degenerate Legendre transformation, and the gravitational field equations. For application, we consider the quadratic-curvature gravity, and first calculate the entropy and energy of a static spherically symmetric black hole, which are in agreement with the results obtained in the literature for a Schwarzschild-(A)dS black hole.
Highly oriented-ZnO nanorods from hydrothermally depositions: Synthesis and optical properties
Authors: Kurniawan R , Setyawan T E , Agista W P , Amalia S , Pangestu Z A , Wahyuni N E A , Febrianti N S , Habani M H 
Published: August 2020

Abstract
A highly (002)-oriented ZnO NRs on the Si/SiO2 substrate was successfully synthesized by the spray-hydrothermal method, where ZnO nanoparticles (ZnO NPs) were used as templates. Interestingly, by varying deposition temperatures from 150 to 350 °C, we successfully modified the orientation of the nanorod from vertical/horizontal to globular. This result is related to the agglomeration of ZnO NPs in the deposition process. Furthermore, globular ZnO NR showed a high electron transfer up to ∼9×1014 Ω−1 cm−1 eV with the presence of an excitonic state. Our results will provide an alternative in designing the structure and morphology of ZnO NR at a more affordable cost for high-performance optoelectronic applications.
Analyses of magnetic properties and crystal size on Fe3O4 nanoparticle from local iron sand using PEG as soft template
Authors: Mufti N , Sari D R P , Muyasaroh A F , Yudyanto  , Sunaryono  , Taufiq A 
Published: August 2020

Abstract
Nano-sized Fe3O4 has been considered prominent in material science research due to its potential applications in multi-layered aspects. One of the simple and inexpensive methods of nanosized Fe3O4 synthesis is co-precipitation. However, this method has not provided a uniform size. Therefore, this study carried out a few modifications by using PEG-200 and PEG-1000 as a soft template with a volume ratio of 1:1, 1:3, and 1:5. The Fe precursors used in this study are iron sand from the Brantas River, Kediri-East Java, Indonesia. The XRD results showed that the use of PEG in the synthesis of Fe3O4 did not affect the Fe3O4 phase, and this study obtained a crystal size with a range of 6-12 nm. Based on morphological observations using SEM, the use of soft templates in Fe3O4 synthesis can reduce agglomeration rather than without using a PEG template. All Fe3O4 powder samples showed ferrimagnetic behavior with a saturation magnetization of 39.5-70 emu/g.
Time dependence of nickel-coated st60 steel corrosion rate in sulfuric acid media
Authors: Muhtadi I , Puspitasari P , Aminnudin A , Permanasari A A , Sukarni S , Pratama M M A , Putra A B N R 
Published: August 2020

Abstract
The low-carbon steel alloy (St60 steel) consists of steel (Fe) and elements such as carbon (C), silicon (Si), manganese (Mn), phosphor (P), and others. This research aimed to analyze the corrosion rate of steel St. 60 by nickel coating in a corrosion test using 4M concentrated H2SO4 (sulfuric acid) with soaking solution for 60 minutes, 120 minutes, 180 minutes, and 240 minutes respectively. This research obtained by weighing the samples to find the weight losses after corrosion which resulted of 31.8 mg, 104.0 mg, 318.1 mg, and 575.4 mg for samples in 60 minutes, 120 minutes, 180 minutes, and 240 minutes soaking duration respectively. The corrosion rate calculation showed relatively significant weight losses. The average weight loss from the specimens in soaking time of 60 minutes, 120 minutes, 180 minutes, and 240 minutes were 0.0203 mm/year, 0.0320 mm/year, 0.0642 mm/year, and 0.0893 mm/year. The highest corrosion rate process was found in the soaking duration of 240 minutes, with the value of 0.0893 mm/year. The significant weight loss meant that soaking duration greatly influences the corrosion rate with the conclusion of longer duration resulted in a high corrosion rate and vice versa.
Ag nanoparticles effect on BaTiO3-Graphite-AC/Aluminum foil symmetric supercapacitor
Authors: Suryani S E I , Ristanti I , Diantoro M , Wisodo H , Taufiq A , Mufti N 
Published: August 2020

Abstract
Many supercapacitor studies focus on materials that are inflexible and have low specific capacitance. The addition of low dimension metals such as silver nanoparticles (AgNP) into the BaTiO3-Graphite-Activated Carbon (AC)/Aluminum foil showed a change in structure and morphology. The AC and graphite are generally used as necessary materials for supercapacitors. Adding AgNP is expected to increases the general mobility and specific capacitance of BaTiO3-Graphite-AC/Aluminum foil. In this study, we report the effect of AgNP into Graphite-AC-BaTiO3/Al foil symmetric supercapacitors. In the first step, we prepared nanocomposite comprises (x)AgNP-graphite-AC-BaTiO3. The dense solution then deposited on to clean aluminum foil as an electrode. The symmetric supercapacitors were sandwiched using two electrodes separated by a separator and electrolyte. It is shown that the crystal structure and morphology change with the addition of AgNP. The Optimum capacitance of Ag-BaTiO3-Graphite-AC/Aluminum Foil supercapacitor obtained from LCR meter of 1.9×10−5 F/g and dielectric constant of 1.03×106. The cyclic voltammetry test for three-electrode systems produces a specific capacitance of 8.95 F/g and 0.83 F/g for testing two electrode systems. We obtained that the increase of AgNP increases the specific capacitance of the electrode and supercapacitor to the optimum at 0.06 g Ag.
Optimizing the immobilization of lipase enzyme (Aspergillus oryzae) in the silica and silica-cellulose matrix by adsorption method
Authors: Maharani C A , Suharti S , Wonorahardjo S 
Published: August 2020

Abstract
Silica and silica-cellulose were safe biomaterials used as the matrix for immobilized enzyme or any bigger molecule. Some enzymes play role in some processes to biofuel production. In this study, the enzyme used was the lipase enzyme, to test the ability of the matrix as carrier. This research aimed to know the ability to immobilize lipase enzyme using adsorption method. Spectroscopy methods were involved. The research was divided into 4 steps (1) preparation of silica and silica-cellulose matrices, (2) characterization of silica and silica-cellulose, (3) immobilization of lipase enzyme on the silica and silica-cellulose which included activity test: optimum temperature, optimum pH, and optimum stirring speed, and (4) effectiveness of immobilized lipase enzyme on the silica and silica-cellulose. The result showed silica porous material as a matrix was more effective than silica-cellulose as matrix for lipase enzyme.
Voltage stability analysis: Case study in Madura 150 kV transmission system
Authors: Rosyadi F U , Aripriharta A , Rosmin N , Fadlika I 
Published: August 2020

Abstract
Voltage stability problem during the operation of the power system cause serious failures in the power system, so that making the development of stability analysis an important necessity. In this study, the data taken were Gilitimur, Bangkalan, Sampang, Pamekasan and Sumenep bus obtained from PT. PLN (Persero) UP2B East Java Madura 150 kV system area. In March 2019 there was a large voltage drop on the Sumenep bus so that the voltage was 133 kV. In power systems, the system voltage must be maintained within the limits (+ 5%) and (-10%) of the nominal voltage. Based on these regulations, the voltage condition on the Sumenep load bus experiences a voltage drop of 17 kV or >10% so that the voltage drop has exceeded the allowable voltage standard, whereas on other buses in Madura the region has also experienced a voltage drop that is almost close to the standard limit as in the Sampang bus has a voltage drop of 137 kV. To predict the voltage stability of the system in Madura, it can be done with a voltage stability analysis study using the Q-V Sensivity Analysis method. This analysis can be useful to determine which buses are prioritized for maintenance. In the Q-V Sensivity Analysis it is assumed that the bus voltage and load is absolute, when the value of Jacobian reduction (JR) is negative, indicating that the bus condition is unstable. In the analysis of the Sumenep bus the negative value is -0.015 while the other buses are positive namely the Gilitimur bus = 1.225, Bangkalan bus = 0.502, Sampang bus = 0.448 and Pamekasan bus = 0.287, so it can be concluded that the 150 kV Madura transmission system has unstable buses is the Sumenep bus.
Analysis of power loss on the addition of new networks in Malang transmission system
Authors: Wiguna S , Aripriharta A , Fadlika I 
Published: August 2020

Abstract
Power loss problems in Malang transmission line system can occur due to high voltage drops in a long distance transmission lines and can be attributed to large loads resulting to high current flowing in the lines. Not only this setback can contribute to the decrease power transfer in the demand side, but it also can impair the conductor line over time owing to the excessive heats. To mitigate this problem, new networks or current distribution scheme are offered to reduce the excessive power loss and additionally to meet the load demands. This study aims to investigate and calculate the power losses in the transmission system before and after the networks are employed. The mathematical analysis of the power loss is presented in this paper and subsequently verified through simulation. The data used in this study are obtained from the State Electricity Utility (PLN) of Malang Raya. The results of this study indicate that before the addition of the network, Malang Transmission System experienced a significant power loss that is equal to 598.2 kW in six lines, including Bus 1 – LW at 125.5 kW, Bus 1 – PKS 164 kW, PKS – KA 1 kW, LW – KA 12.1 kW, KA – SKL 50 kW, and STM – KA 245.6 kW. After the addition of four new networks, the power loss is considerably reduced to 355.7 kW in 10 lines, including Bus 1 – LW 67.9 kW, Bus 1 – PKS 52.6 kW, PKS – KA 1.6 kW, LW – KA 0.3 kW, SKL – KA 0.1 kW, STM – KA 88.3 kW, LW – SKL 0.4 kW, PKS – LW 0.2 kW, STM – PKS 57.2 kW, and STM – SKL 87.1 kW.
Modelling of adaptive power management circuit with feedback for self-powered IoT
Authors: Aripriharta A , Firmansah A , Yazid M , Wahyono I D , Muladi  , Horng G J 
Published: August 2020

Abstract
In general, self-powered sensor networks/Internet of Things (IoT) are equipped with a power management system and use a timer as a reference for the device’s actives time, both using an internal timer and an external timer. The system is less efficient because it requires that there are parts that continue to function when the device is in sleep mode. In addition, the amount of harvested energy also influenced by many factors with an uncertain amount. An IoT self-powered system that uses a timer as an active interval reference will encounter problems when the amount of system energy demand is greater than the harvested energy. This paper presents an adaptive power management system equipped with feedback for self-powered IoT for room temperature and humidity monitoring applications. The power management system can provide adaptive active intervals based on the harvested energy capacity. Microcontrollers send feedback to the power management circuit at the end of each cycle. The power management circuit immediately disconnects the controller circuit from the energy storage’s component (supercapacitor) so that energy used efficiently. Several methods of minimizing the energy consumption of the device are also applied to provide optimal results. The research method begins with system modelling, including an energy harvester circuit, power management, and controller. The research scenarios include energy harvester performance tests, calculating the energy requirements of the power management and controller circuit, and validating research results. Overall, the system can work well, the active interval/data transmission of 14.41 seconds to 22.34 seconds in a room with a light intensity of 800 lux to 1000 lux.
Performance comparison maximum power point tracking methods using SEPIC converter
Authors: Hidayat A R , Yudaningtyas E , Siwindarto P 
Published: August 2020

Abstract
MPPT Algorithms such as Incremental Conductance (IC) are designed to maintain operation of Photovoltaic (PV) system at Maximum Power Point Tracking (MPPT) while preventing oscillations steady state that contribute to power loss. IC work based on the power curve to voltage characteristic of PV. IC method works based on the power curve gradient to the characteristic voltage of the solar panel. The maximum working point of PV where worked at maximum power called a voltage at maximum power point (VMPP). Adding a PID controller to the MPPT IC can reduce the reading error at the reference voltage. Error reading on reference voltage will have an impact on the value of the power. If the reference voltage reading error can be reduced, the value power will be better. In this research, results of power generated by PV system used two different MPPT methods, Conventional MPPT IC and MPPT IC-PID. The results of the MPPT IC-PID can effectively improve the steady state accuracy and tracking accuracy.
Adaptive backstepping control for Buck DC/DC converter and DC motor
Authors: Ardhenta L , Subroto R K , Hasanah R N 
Published: August 2020

Abstract
DC converter is an important part of DC systems such as hybrid (PV and wind turbine) system. Buck DC/DC converter one of this converter is the main control in DC voltage regulator. The desired performance of this DC converter is following the reference voltage and having a fast response. The use of a DC motor as a load makes the control system has the aim to stabilize the DC bus voltage and DC motor speed. This paper designs controllers based on the principle of backstepping control to operate a DC converter and DC motor. A non-linear control Backstepping have many parameters that need to be determined in order to obtain the desired response. Modification to adaptive backstepping is promised to improve the response generated by conventional backstepping. Fuzzy logic, as an adaptive control, works very well and provides optimal values of backstepping parameters. This tuning process is expected that the controller performances have reliability, quick response, and robust system. The proposed controller is compared by PI controller and other adaptive backstepping controller. Simulation results show no overshoot such that the response given by the proposed controller is better than other controllers. The performance produced by the proposed controller has a simple design and a good response.
Computational simulation of dental implant material using hydroxyapatite from chicken eggshell
Authors: Puspitasari P , Zhorifah H F N , Permanasari A A , Gayatri R W , Pratama M M A , Putra A B N R 
Published: August 2020

Abstract
Teeth are vital parts of the oral cavity. They are easy to damage without proper treatment. A material that can be used to treat damage on a tooth is hydroxyapatite. HA can be used on the metal implant, prosthesis to replace bones and teeth, and to produce biocomposite. This research used Finite Element Method and ANSYS workbench 18.1 to simulate the force on dental implant. The material was designed to resemble a tooth shape then simulated as the implant material to repair the damaged tooth. Based on the simulation, hydroxyapatite could be used as the implant because it had the equivalent stress under 100 MPa, 97.417 MPa to be exact, with the total maximum deformation value of 0.0087 mm.