| 1. |
- Anuradha, Chandrasekar, et al.
(författare)
-
Losses and Efficiency Calculation for Multi-Port Converter
- 2022
-
Ingår i: AIP Conference Proceedings. - : AIP Publishing. - 1551-7616 .- 0094-243X. ; 2516
-
Konferensbidrag (refereegranskat)abstract
- In this paper, a multi-port non-isolated SEPIC converter is analysed for integrating with the renewable energy source and also losses and efficiency are calculated. The proposed converter utilizes a single stage power conversion, thereby providing higher energy efficiency. The proposed structure comprises of a combination of Pulsating Voltage Cells (PVC) and Pulsating Voltage Source Cell (PVSC) on the input side and a Pulsating Voltage Load Cell (PVLC) on the output side. The two topologies involved are Multi Input Single Output (MISO) and Multi Input Multiple Output (MIMO) which are bidirectional. The efficiency of the proposed multi-port converter has been calculated by determining the switching stress of the power electronic switches used. The proposed multi-port SEPIC converter considers the entire system to be a single-stage converter, and promises higher energy efficiency.
|
|
| 2. |
- Ashyraliyev, Maksat, et al.
(författare)
-
A note on the hyperbolic-parabolic identification problem with nonlocal conditions
- 2021
-
Ingår i: AIP Conference Proceedings. - : AIP Publishing. - 0094-243X .- 1551-7616. ; 2334
-
Tidskriftsartikel (refereegranskat)abstract
- In the present paper, we study a source identification problem for hyperbolic-parabolic equation with nonlocal conditions. The stability estimates for the solution of this source identification problem are established. Furthermore, we construct the second order of accuracy difference scheme for the approximate solution of the problem under consideration. The stability estimates for the solution of this difference scheme are presented.
|
|
| 3. |
- Ashyraliyev, Maksat, et al.
(författare)
-
On the source identification problem for hyperbolic-parabolic equation with nonlocal conditions
- 2021
-
Ingår i: AIP Conference Proceedings. - : AIP Publishing. - 0094-243X .- 1551-7616. ; 2325
-
Tidskriftsartikel (refereegranskat)abstract
- In the present paper, we establish the well-posedness of an identification problem for determining the unknown space-dependent source term in the hyperbolic-parabolic equation with nonlocal conditions. The difference scheme is constructed for the approximate solution of this source identification problem. The stability estimates for the solution of the difference scheme are presented.
|
|
| 4. |
- Chaudhary, Shilpi, et al.
(författare)
-
Adsorption of 3-(triethoxysilyl)propionitrile on a rutile TiO2(110) surface : An X-ray photoelectron spectroscopy study
- 2020
-
Ingår i: DAE Solid State Physics Symposium 2019. - : AIP Publishing. - 1551-7616 .- 0094-243X. - 9780735420250 ; 2265
-
Konferensbidrag (refereegranskat)abstract
- The adsorption of 3-(triethoxysilyl)propionitrile (TESP) on a reduced rutile TiO2(110) surface has been investigated using synchrotron-based X-ray photoelectron spectroscopy in ultrahigh vacuum (UHV). We have studied TESP adsorption on two surface preparation of rutile TiO2 (110) to explore the role of surface defects. In the first preparation, the adsorption of TESP was studied on reduced TiO2 (110) surface at room temperature. In the second experiment TESP was adsorbed on the oxygen-treated TiO2 surface to quench the oxygen vacancies generated by UHVannealing of the TiO2 crystal. The molecular footprints of the TESP molecules confirms the adsorption on both types of TiO2(110) surfaces. In the case of the reduced surface, temperature-dependent XPS measurements show the thermal stability of TESP molecules up to 600 °C. The comparison of the nitrogen and carbon lineshapes for both preparations suggests different adsorption geometries on the reduced and oxygen-dosed surfaces. To the best of our knowledge, the UHV preparations and measurements of TESP adsorption on rutile TiO2 (110) in the present study are reported for the first time.
|
|
| 5. |
- Ewaid, Salam H., et al.
(författare)
-
Acute toxicity of the water chlorinationbyproduct (chloroform) in male mice
- 2020
-
Ingår i: AIP Conference Proceedings. - USA : American Institute of Physics (AIP). - 0094-243X .- 1551-7616. ; 2290:1
-
Tidskriftsartikel (refereegranskat)abstract
- Drinking water disinfection has been one of the biggest advances in public health. However, animal studies have suggested that when tested at high concentrations, certain disinfection byproducts disinfection (DBPs) in drinking water can cause an increased incidence of cancer and reproductive effects. In this study, sixty male white mice were kept under the laboratory conditions, divided into six exposure groups and administrated with single oral dose 0, 50, 300, 700, 1000 or 1500 mg/kg BW chloroform dissolves in corn oil as a vehicle. Clinical observations and gross pathologic examination made after dosing on surviving died, and animals that were killed on the 7th day. At end of 14 days, animal weights were recorded, liver and kidneys removed, weigh and examined with the naked eye then it was fixed in 10% Neutral Buffered Formalin (NBF), transfer to 70% ethanol and included in paraffin. Tissue parts were cut 4-5 μm soiled with hematoxylin and eosin. Clinical signs observed at high doses consisted of behavioral effects, reduced body weight, livers and kidneys were congested, enlarged and their weights increased. Liver damage was characterized mainly through centrilobular necrosis and massive necrosis at higher doses. The kidney damage containing raised kidney weight, inflammation, renal cell proliferation and proximal tubular necrosis. Lethal dose causes death in 50% of exposed animals (LD 50) value calculated by the probit analysis was 550 mg/kg Body Weight (BW).
|
|
| 6. |
- Iarkov, Ilia, et al.
(författare)
-
Economic Feasibility of PV Installations for Multifamily Houses in Moscow
- 2023. - 1
-
Ingår i: AIP Conference Proceedings. - 0094-243X .- 1551-7616. - 9780735445420 ; 2791:1
-
Konferensbidrag (refereegranskat)abstract
- While it is evident that photovoltaic installations are becoming more and more widespread globally, demand for them in the Russian market remains low. Considering recent changes in the legal framework, which are beneficial for households with renewable energy, it is crucial to evaluate photovoltaic installation's economic feasibility for the Russian context, which is evaluated in this article. First, the authors created an hourly electricity consumption profile for a typical Russian multifamily house. Then a PV installation was designed and scaled to reach annual net-zero balance and net-zero balance in July for different ways of installing PV modules. After that, a monthly energy balance, considering underproduction and overproduction of electrical energy, was calculated. Finally the costs of PV electricity were calculated including purchased equipment, costs for installation as well as cost for buying electricity not covered by the PV modules and sold electricity during hours of overproduction. The economical evaluation was performed assuming a 30 year lifetime for the PV installation. It is concluded in this paper that PV installations can be profitable in the Russian market.
|
|
| 7. |
- Kádár, Roland, 1982, et al.
(författare)
-
Challenges in nano-structured fluid flows for assembly into hierarchical biomaterials
- 2023
-
Ingår i: AIP Conference Proceedings. - 0094-243X .- 1551-7616. - 9780735445475 ; 2997
-
Konferensbidrag (refereegranskat)abstract
- Hierarchical biomaterials have their place in the context of developing novel material systems particularly in the framework of sustainability. The key to their development is in controlling their assembly into hierarchical orders at various lengthscales. Thus, flow can be an asset in e.g. controlling orientation, however, resolving the hierarchical orientation dynamics of such systems remains a challenge. We focus here mainly on cellulose nanocrystals water-based suspensions, however, the outline is representative of numerous nanostructured fluids.
|
|
| 8. |
- Klauson, Artur, et al.
(författare)
-
A case study of printed circuit boards recycling by disintegrator technology
- 2024
-
Ingår i: AIP Conference Proceedings. - 1551-7616 .- 0094-243X. ; 2989:1
-
Konferensbidrag (refereegranskat)abstract
- The constant accumulation of Waste Electric and Electronic Equipment (WEEE) at an accelerating pace pose a threat to the environment and people. On the other hand, the WEEE and specifically their component Waste Printed Circuit Boards (WPCBs) are rich in Precious Metals (PMs) and Base Metals (BMs), more than ten times their content in natural ores. Such an opportunity has already attracted the minerals processing industry (e.g., metallurgical companies) to the WEEE recycling problem solving. However, analogically to virgin mining, the presently more or less worthless parts of WPCBs also pose a health threat since they contain toxic pollutants. The key to efficient metal recovery from WPCBs is selective processes for fragmentation and separation which are accurate for both metals and non-metals. Fragmentation is a prerequisite for accurate separation. The closed-circuit grinding (size reduction) method is preferred in the case of WPCB processing, and a prospective technology for carrying it out is High Intensity Impact Milling (HIIM). In this paper, the HIIM (disintegrator) technology is compared with commonly known technologies for selective WPCB size reduction. The HIIM demonstrated possibility to adjust the size reduction process to different materials and replication of the initial results obtained under laboratory conditions.
|
|
| 9. |
|
|
| 10. |
- Lolur, Phalgun, 1989, et al.
(författare)
-
Benchmarking the variational quantum eigensolver through simulation of the ground state energy of prebiotic molecules on high-performance computers
- 2021
-
Ingår i: AIP Conference Proceedings. - : AIP Publishing. - 1551-7616 .- 0094-243X. ; 2362
-
Konferensbidrag (refereegranskat)abstract
- We use the Variational Quantum Eigensolver (VQE) as implemented in the Qiskit software package to compute the ground state energy of small molecules derived from water, H2O, and hydrogen cyanide, HCN. The work aims to benchmark algorithms for calculating the electronic structure and energy surfaces of molecules of relevance to prebiotic chemistry, beginning with water and hydrogen cyanide, and to run them on the available simulated and physical quantum hardware. The numerical calculations of the algorithms for small quantum processors allow us to design more efficient protocols to be run in real hardware, as well as to analyze their performance. Future implementations on accessible quantum processing prototypes will benchmark quantum computers and provide tests of quantum advantage with heuristic quantum algorithms.
|
|
