bluuebunny/crossref_metadata_2025_split huggingface dataset:
Solenoid-free current drive via ECRH in EXL-50 spherical torus plasmas
Authors: Shi Yuejiang , Liu Bing , Song Shaodong , Song Yunyang , Song Xianming , Tong Bowei , Cheng Shikui , Liu Wenjun , Wang Mingyuan , Sun Tiantian , Guo Dong , Li Songjian , Li Yingying , Chen Bin , Gu Xiang , Cai Jianqing , Luo Di , Banerjee Debabrata , Zhao Xin , Yang Yuanming , Luo Wenwu , Zhou Peihai , Wang Yu , Ishida Akio , Maekawa Takashi , Liu Minsheng , Yuan Baoshan , Martin Peng Y.-K. , the EXL-50 Team  
Published: May 2022

Abstract
As a new spherical tokamak designed to simplify the engineering requirements of a possible future fusion power source, the EXL-50 experiment features a low aspect ratio vacuum vessel (VV), encircling a central post assembly containing the toroidal field coil conductors without a central solenoid. Multiple electron cyclotron resonance heating (ECRH) resonances are located within the VV to improve current drive effectiveness. Copious energetic electrons are produced and measured with hard x-ray detectors, carry the bulk of the plasma current ranging from 50–150 kA, which is maintained for more than 1 s duration. It is observed that over one ampere current can be sustained per watt of ECRH power issued from the 28 GHz gyrotrons. The plasma current reaches I
p > 80 kA for high density (>5 × 1018 m−2) discharge with 150 kW ECRH. An analysis was carried out combining reconstructed multi-fluid equilibrium, guiding-center orbits of energetic electrons, and resonant heating mechanisms. It is verified that in EXL-50 a broadly distributed current of energetic electrons creates a smaller closed magnetic-flux surface of low aspect ratio that in turn confines the thermal plasma electrons and ions and participate in maintaining the equilibrium force balance.
Application of response surface methodology (RSM) in analyzing the hydrolytic degradation of plasticized MWCNTs nanocomposites
Authors: Norazlina H , Suhaila A , Rabiatul Manisah M , Nabihah A , Lili Shakirah H , Nurul Aniyyah M S , Kamal Y 
Published: May 2022

Abstract
The present research goals are to investigate how several parameters became the factor to maximize the degradation ability of biopolymer. Multi-walled carbon nanotubes (MWCNTs) was blended in poly(lactic acid (PLA) assisted by poly(ethylene glycol) (PEG) as a plasticizer. PLA/PEG/mCNTs from the melt blending technique was used for analysis in hydrolysis degradation purposely to discover how the time, temperature and pH of media solution could affect the weight loss and validate by Response Surface Methodology (RSM). The hydrolysis study was examined at three parameters of immersion; time from 7 to 28 days; the temperature at 25 °C, 45 °C and 65 °C; and pH of the solution at pH 3 (HCl), pH 6.5 (deionized water) and pH 10 (NaOH). The maximum weight loss, 22.53 % was observed after 28 days of immersion at 65 °C of immersion temperature and pH 3 of solution. The quadratic model developed was reasonably accurate based on the R2 value of 0.966, insignificant lack of fit, and low percentage error during validation experiment from the predicted values (< 5 %).
Effects of potassium hydroxide and polyethylene glycol on conductivity of methylcellulose membrane for fuel cells applications
Authors: Zu N A M , Abdullah S , Latiff M.K.A , Hashim N , Besar M B H , Sobri N A M , Hassan L S , Abdullah N , Mohamed R M 
Published: May 2022

Abstract
In Fuel Cells Technology, the need for lower cost, highly conductive of membrane is crucially demanding. The biopolymers methylcellulose (MC) was chosen as the membrane backbone because of the availability of MC, natural and good barrier against environmental parameters. In order to increase the conductivity value of MC membrane, two experiments were conducted. In experiment 1, different weight of potassium hydroxide (KOH) was added onto MC membrane. For experiment 2, different weight of KOH and polyethylene glycol (PEG) were used in the MC membrane matrix. For both experiments, the membrane was prepared using simple solution casting technique. The conductivity value of MC/KOH and MC/KOH/PEG were investigated by Linear Sweep Voltammetry Potentiostatic (LSV). The findings show that the conductivity value of MC membrane was significantly increased when adding KOH and PEG. For binary solution of MC/KOH, ratio of 75% of MC and 25% of KOH yield the best conductivity 0.78 × 10−5 Scm−1. While for tertiary solution MC/KOH/PEG, the best conductivity value was given by composition of 60/20/20 which is 2.00 × 10−4 Scm−1. The research showed that the addition of KOH or KOH/PEG significantly improved the ionic conductivity of MC membrane. This discovery will play a vital role in the development of low cost, high conductivity in Fuel Cells technology.
H2S adsorption using ZnO modified Na-A zeolite and conditions optimization by Response Surface Methodology
Authors: Hadi Abdullah Abdul , Mat Ramli , Somderam Sathoshini , Shah Abd Aziz Azharin , Abu Asshaary Daud Mohd 
Published: May 2022

Abstract
Zinc oxide-impregnated Na-A zeolites were synthesized and used in sour gas treatment for hydrogen sulfide (H2S) removal. Response Surface Methodology (RSM) was used to study the effect adsorption variables, on the adsorbent adsorption capacity. Box– Behnken design of experiment was selected and quadratic regression was used to describe the relationship between the process variables and the adsorbent adsorption capacity. The effects of three process variables of A: reaction temperature (28, 64 and 100 °C), B: inlet H2S concentration (111, 142 and 200 ppm), and C: inlet flow rate (20,30 and 40 mL min–1) on the adsorbent adsorption capacity were investigated. ANOVA was used to analyzed the interaction between the process variables and response factor. The result showed that all studied factors are significant for H2S removal. Analysis of variance implied the selected model was fitted with the experimental data. The result indicates that up to 31.07 mg S/g adsorbent can be obtained at optimum conditions.
The preparation and characterization of silica from coconut husk
Authors: Norul Azlin M. Z. , Syamim Syufiana S. 
Published: May 2022

Abstract
Agriculture wastes, especially ash containing silica, are auspicious sources of silica for synthetic amorphous silica production. In this research, coconut husk ash (CHA) was employed as a raw material to produce silica. Coconut husk was charred inside a furnace in controlled environment at 900 ºC. To extract silica, the formed ashes were treated with two separate chemical treatments. 5N H2SO4 was used in acid treatment while 2.5N NaOH followed by titration of 5N H2SO4 was used in alkali treatment. The prepared products were characterized by the Fourier-transform infrared spectroscopy (FTIR). The data from FTIR characterization of coconut husk ash exposed that the presence of SiO2 increased after both chemical treatments especially in alkali treatment. The silica recovered from acid treatment was found between 25% to 68% while alkali treatment was at 76%.
Enzymatic transesterification of Rubber Seed Oil Using Immobilized Pseudomonas Cepacia Lipase
Authors: Veny Harumi , Aiman bin Abdul Rani Muhammad Amirul , Hanim Ab Hamid Farah , aziz Noorhaliza , Azrina Sazali Rozana , Shawaliah Idris Siti 
Published: May 2022

Abstract
Biodiesel or Fatty acid methyl ester (FAME) is a biofuel formed from transesterification of vegetable oil and fat. In this study, the source of vegetable oil is Rubber seed oil (RSO). The oil was extracted from rubber seed by solvent extraction, using n-hexane and methanol. The oil produced from both solvents’ extraction were used as feedstock. Biodiesel production from RSO was performed with methanol as acyl acceptor. using immobilized Pseudomonas cepacia lipase as catalyst. Three different parameters were studied, they are reaction time, lipase inhibition, and stepwise addition of methanol/oil molar ratio. The enzymatic transesterification with ultrasonic assisted process was utilized, as it enhances the miscibility between oil and methanol, which lead to reducing the reaction time and significantly increased the yield of biodiesel. The results indicated a significant biodiesel is produced with the highest yield of 76.55%, at 45 °C, with the lipase amount of 5 % (w/w), methanol to oil molar ratio of 3:1 within 6 hours. It is found that despite high content of free fatty acid of rubber seed oil, it has a potential as alternative feedstock for FAME production.
The multipole form factors and the influence of the weak interaction in e--
6
Li elastic scattering at high energies
Authors: Vo M. T. 
Published: May 2022

Abstract
By using the formulas to calculate the reduced matrix elements of tensor operators, the author has completely set up the formulas for calculating the multipole form factors of nuclei with six nucleons. Applying the given formulas, the author has also determined all multipole form factors that are present in

e
−

−
3
6

L
i

elastic scattering cross section when the nucleus is in ground state. Based on the calculated multipole form factors, the influence of weak interaction is investigated corresponding to different incident electron energies.
Sum squeezing, entanglement and quantum teleportation of the superposition of photon-added pair coherent state
Authors: Chuong Ho Sy , Duc Truong Minh 
Published: May 2022

Abstract
In this paper, we study some non-classical properties of the superposition of photon-added pair coherent state (SPAPCS) such as two-mode sum squeezing and entanglement. The obtained results show that this state has two-mode sum squeezing behavior but the pair coherent state does not. The degree of squeezing of the SPAPCS is enhanced as more and more photons are added to the two modes of the original pair coherent state. Besides, this state is an entangled state and the entanglement degree can be enhanced by adding photons to both modes of the state. When using the SPAPCS as an entangled resource for a coherent state quantum teleportation, it is shown that the quantum teleportation process is successful and the average fidelity of the process can be higher than that of the case where the original pair coherent state is used if the parameters are selected appropriately.
Influence of Coulomb disorder on the phase diagrams of the Anderson-Hubbard model
Authors: Yen Nguyen Thi Hai , Tuan Hoang Anh , Anh Le Duc 
Published: May 2022

Abstract
We study the half-filled Hubbard model with Anderson and Coulomb disorder by mean of dynamical mean field theory using the geometrically averaged local density of states. The paramagnetic phase diagram of the model as a function of the Coulomb interaction and Anderson disorder strength is obtained. The spectral phase diagrams of the ground states for the model are also constructed and discussed. We show that in the intermediate and strong interaction regimes, the Coulomb disorder leads the metallic and Mott insulator phase regions shrink, while the Anderson insulator region is enlarged.
Charged excitons or trions in 2D parabolic quantum dots?
Authors: Quang Nguyen Hong , Huong Nguyen Que 
Published: May 2022

Abstract
So far in the literature the terms “charged exciton” and “trion” are often confused with each other and mostly considered as the same. In this work we show this is not the case in 2D quantum dots with a parabolic confinement. By using the unrestricted Hartree-Fock method the energy and binding energy of both charged excitons and trions in 2D parabolic quantum dots are calculated in dependence on the confinements of charge carriers in quantum dot. It is shown that the binding energies of the charged exciton and the trion behave differently in regard to the ratios of the confinements between the electron and hole. The effect of the external magnetic field on the binding energies of charged excitons has been also considered.
Magnetic competition with different spin chiralities in kagome magnets
Authors: Mai Tran Thi Thanh , Son Nguyen Hong , Tien Tran Minh 
Published: May 2022

Abstract
Using the Bogoliubov variational method we study the magnetic competition in a minimal model proposed for kagome magnets. The minimal model consists of itinerant electrons with their spin-orbit coupling and localized electrons with their anisotropic spin exchange. A spin exchange between localized and itinerant electrons is also included into the model, and it is anisotropic. At half filling and in the region of stable in-plane antiferromagnetism, a magnetic competition between antiferromagnetic phases with different spin chiralities is found. Depending on the sign of the hopping integral and the spin-orbit coupling, either the 1 × 1 or

3

×

3

in-plane antiferromagnetism is established. These in-plane antiferromagnetic states are characterized by distinguishable spin chiralities.
Numerical calculation of the dependence of chemical potential on temperature for ideal quantum gases in 1,2 and 3-dimensional spaces
Authors: Le Hieu B , Nguyen Uyen T , Ngoc Giau N , Tran Hieu V , Le Khang M , Pham Vinh N T 
Published: May 2022

Abstract
In this study, we use the Gauss–Kronrod quadrature rule with Brent’s method to numerically calculate the chemical potentials of ideal quantum gases in 1, 2, and 3-dimensional spaces as functions of absolute temperature. Our numerical results are validated by the analytical formulae in [Cowan, B. 2019, Journal of Low Temperature Physics, 197 (5-6), 412-44]. In vice versa, we can evaluate the applicability of these proposed formulae in low- and high-temperature regimes. The results in this work are initiated for the ongoing project to analytical and numerical calculations of other thermodynamic quantities of ideal quantum gases in 1, 2, and 3-dimensional spaces such as energy, heat capacity, and entropy.
Investigation of Allopurinol binding mechanism to allele HLA-A*33:03 by using Molecular Dynamics simulation
Authors: Pham Oanh P. , Lai Hien T.T. , Tran Duong B. , Le Linh T. P. , Nguyen Anh Thi Van , Nguyen Hang Thi Thu , Nguyen Toan T. 
Published: May 2022

Abstract
Allopurinol (ALP), a xanthine oxidase inhibitor, is an FDA-approved urate-lowering medication used to treat Gout, prevent tumor lysis syndrome, and prevent recurrent calcium nephrolithiasis in hyperuricosuria patients. However, it has been known as a common cause of severe cutaneous adverse drug reactions (SCAR) including Stevens-Johnson syndrome (SJS) and toxic epidermal necrolysis (TEN), hypersensitivity syndrome/drug reaction with eosinophilia and systemic symptoms (HSS/DRESS), especially in patients carrying the Human Leukocyte Antigens allele HLA-B*58:01, which is more prevalent in Asian population. However, although patients do not carry the HLA-B*58:01 allele, they still exhibit allopurinol-induced SCAR. Surprisingly, a large number of these patients have the HLA-A*33:03 allele. In this research, we investigated the binding of ALP to the HLA-A*33:03 structure using Molecular Dynamics (MD) simulation. Our results showed that the complex of HLA-A*33:03 and ALP was stable after 100000 ps simulation time. ALP had strong interactions with three important residues locating in the active site of HLA-A*33:03, which include the seven amino acid residues Val 76, Asp 77, Leu 81, Ile 95, Gln 96, Asp 116, and Tyr 123. This data suggests that ALP has strong binding affinity for this allele. Thus, in addition to HLA-B*58:01, HLA-A*33:03 may be a potential screening marker before prescribing Allopurinol for Gout treatment.
Research on hydrodynamic characteristics of circular aquaculture tank based on PIV technology
Authors: Zhu Fang , Zhang Zekun , Hu Jiajun , Feng Dejun 
Published: May 2022

Abstract
The diameter-depth ratio of the water inlet pipe in the aquaculture tank (the ratio of the diameter of the aquaculture tank to the water depth, D/H) and the setting angle of the water inlet pipe (the acute angle formed by the water outlet direction and the tangent to the tank wall, α) are important factors that affect the hydrodynamic characteristics of the tank and directly affect the circulation. The comprehensive performance of the aquaculture system, in order to study the influence of the diameter-depth ratio of the aquaculture tank and the setting angle of the inlet pipe on the flow field of the aquaculture tank, this paper uses the particle image velocimetry (PIV) to measure the effect of different diameter-depth ratios and the setting angle of the inlet pipe on the circular shape. Hydrodynamic characteristics of circulating water aquaculture tanks. The test selects the single-pipe water intake mode commonly used in actual production for the circular aquaculture tank as the research object, and selects three groups of commonly used D/H conditions (3:1, 4:1, 5:1), Set up 8 groups of inlet pipe setting angles for each group of D/H conditions. In the experiment, the PIV technology was used to measure the flow field of the water layer 1 cm from the bottom of the tank under different working conditions, and the hydrodynamic characteristics of the culture tank were quantitatively analyzed through 2 aspects: the average flow velocity v
avg and the velocity uniformity coefficient DU
50.The comprehensive test results show that the D/H and the setting angle of the inlet pipe obviously affect the flow field and hydrodynamic characteristics of the aquaculture tank. With the increase of the D/H, the v
avg in the aquaculture tank gradually decreases, and the DU
50 gradually decreases. The changing trends of the hydrodynamic characteristics of the aquaculture tank with the setting angle of the inlet pipe under different D/H conditions are similar. When the water inlet pipe is set at an angle of 50°∼60°, the sewage collection and hydrodynamic characteristics in the aquaculture tank are optimal. The research results in this paper can provide a reference for the setting method of the inlet pipe of the circular aquaculture tank for industrial circulating water.
Inundation analysis of Xiuzhen River based on one-dimensional hydrodynamic model
Authors: Hao Zhenzhi , Sang Guoqing , Li Taili 
Published: May 2022

Abstract
In order to deal with the mountain flood disaster for small and medium-sized rivers and reduce the loss of life and property caused by mountain flood to the people, it is necessary to calculate the flood inundation risk of the region along the river. In this paper, taking Xiuzhen River in Lanshan District of Rizhao City as an example, an one-dimensional hydrodynamic model was established and D8 algorithm was coupled to simulate flood inundation in the target area, and the submerged depth, flood amount and submerged area under different frequency of flood were analyzed. The results show that the method can calculate flood inundation risk and scope quickly and accurately. It provides flood and drought disaster risk information and scientific decision-making basis for the sustainable development of social economy.
Research on water heat coupling model of riparian zone based on soil thermal conductivity model
Authors: Ma Chen , Ren Jie , Dai Juan , Ma Zhaoyang , Wang Fan 
Published: May 2022

Abstract
In recent years, the research on the process of water and heat transfer in the riparian zone has become more and more extensive, a more accurate riparian water and heat coupling model is helpful for us to understand the law of water and heat transfer in the riparian zone. The hydro thermal coupling model of riparian zone is constructed based on different soil thermal conductivity models, the simulation effects of different models are verified and compared by using the experimental data, the parameter sensitivity analysis of the built model is carried out to determine the main parameters affecting the output of model temperature field, and the influence of revetment structure on the process of hydro thermal transport in riparian zone is simulated. The results show that: 1. the Hydrothermal Coupling Model of riparian zone based on Johansen thermal conductivity model has the best simulation effect and high reliability. 2. The permeability coefficient (ks
) and porosity (n) have the most significant influence on the temperature simulation results, and the parameter sensitivity is the highest. 3. The revetment structure hinders the infiltration of surface water into the riparian zone in the horizontal direction, reduces the infiltration water level and temperature fluctuation in the riparian zone.
Study on flow field characteristics of box artificial reef
Authors: Zhu Ping , Hao Yuchi , Wei Zhenxing , Yuan Chaozhe , Wang Sheng 
Published: May 2022

Abstract
Based on Zhuhai Miaowan artificial reef demonstration project, this paper studied the flow field characteristics of single box artificial reef and reef group under different spacing by using computational fluid dynamics (CFD) method. The results show that the box artificial reef has a significant effect on flow field. The maximum upwelling height near the reef is about 1.4 times the reef height, and the length of the back vortex is twice the reef size. In the reef group arrangement, the flow field distribution plays the best performance at the 5m spacing arrangement. The research results can provide guidance for reef structure optimization and practical arrangement in site.
Numerical analysis of the hydrodynamic performance of RDT with varying blade numbers
Authors: Jiang Wen , Yu Ruixue , Liu Liangliang , Zou Ao , Bian Tao 
Published: May 2022

Abstract
This study investigates the effect of the blade number of rim-driven thruster (RDT) on the hydrodynamic performance of RDT. Numerical investigation is performed to compare the thrust coefficient and efficiency of the RDT with various blade numbers. The results show that the thrust coefficient of the RDT increases and the efficiency of the RDT decreases with the number of blades increasing.
Research on active reconfiguration strategy of distribution network for real-time risk
Authors: Li Yuan , Chen Yonghua , Wang Bingwen 
Published: May 2022

Abstract
Based on the rapid development of smart distribution network, an active reconfiguration strategy for real-time risk prevention is proposed. Firstly, the operation risk assessment model of distribution network is constructed. Based on the distribution internet of things, the risk source information is collected in real time, and the system risk value under the current operation mode is evaluated from the dual dimensions of distribution network equipment operation reliability and failure consequences. On this basis, the proactive network reconstruction strategy and implementation scheme for risk prevention are proposed. When the risk value of the system exceeds the safety warning line, the network reconstruction of the distribution network is carried out with the minimum risk value and the minimum switching operation times as multiple objectives, so that the distribution network can recover the safe and reliable operation state in time. Finally, the feasibility and effectiveness of the active reconfiguration strategy of distribution network under the risk state proposed in this paper are demonstrated by taking the IEEE 33 node distribution system as an example.
RETRACTED: Study of Power Flow Optimisation for Distributed Energy Systems
Authors: Shi TianYi 
Published: May 2022

Abstract
This paper takes energy saving as the reference point. The distributed energy system is based on the principle of energy “stepped utilization”, where the power generation system is built at the end of the customer to meet the customer’s cooling and heating load, and the energy of different temperatures is utilized according to the temperature matching principle to improve the utilization rate of primary energy. The system is optimised from the perspectives of reliability and economy of operation of the multi-energy complementary distributed energy system, and is analysed using an improved particle swarm optimisation algorithm. The system is optimised to meet the needs of customers in terms of electricity, cooling and heating, while optimising the reliability of the energy system and optimising the environmental and economic aspects of the distributed energy system to maximise the energy efficiency and economic benefits of the system.