Results 1 to 10 of about 493,914 (198)

Atmospheric aerosol effects on spectral mismatch and the resulting uncertainty in photovoltaic performance [PDF]

Scientific Reports
In the operation stage of a photovoltaic (PV) power plant, the output power often differs from the expected value. This deviation is sometimes caused by the so-called spectral mismatch, i.e.
Sergiu-Mihai Hategan, Eugenia Paulescu, Marius Paulescu   +2 more
doaj   +2 more sources

Pulsed synchrony regulation of intraocular and cerebrospinal fluid pressure: a novel paradigm for glaucoma pathogenesis and treatment [PDF]

Frontiers in Medicine
Glaucoma, the leading cause of irreversible blindness worldwide, is characterized by the progressive loss of retinal ganglion cells (RGCs) and their axons.
Bin Lin, Bin Lin, Bin Lin, Bin Lin, Bin Lin, Bin Lin, Duan-Qing Huang, Duan-Qing Huang, Duan-Qing Huang, Duan-Qing Huang, Duan-Qing Huang, Duan-Qing Huang, Ting-Ting Li, Ting-Ting Li, Ting-Ting Li, Ting-Ting Li, Ting-Ting Li, Ting-Ting Li, Wei Liang, Wei Liang, Wei Liang, Wei Liang, Wei Liang, Wei Liang, Meng Xu, Meng Xu, Meng Xu, Meng Xu, Meng Xu, Meng Xu, Dong-Kan Li, Dong-Kan Li, Dong-Kan Li, Dong-Kan Li, Dong-Kan Li, Dong-Kan Li   +35 more
doaj   +2 more sources

Evaluation of mismatch power loss in a PV string composed of series-connected modules: Theory versus experiment

Ain Shams Engineering Journal
Ground-installed PV power-systems are usually built in parallel-rows; each is composed of series-connected modules. With time, some modules got-polluted or −shaded differently. On damage, some modules may be replaced by others of different ratings.
Reham Kamal, Mazen Abdel-Salam, Mohamed Nayel   +2 more
doaj   +3 more sources

Power Enhancement in Partial Shaded Photovoltaic System Using Spiral Pattern Array Configuration Scheme

IEEE Access, 2021
Partial shading causes mismatch losses in the solar PV system. In the PV array, the power output from the healthy PV modules is gone in vain due to the mismatch losses.
Santhan Kumar Cherukuri, Praveen Kumar Balachandran, Kalyan Raj Kaniganti, Madhu Kiran Buddi, Dasu Butti, S. Devakirubakaran, Thanikanti Sudhakar Babu, Hassan Haes Alhelou   +7 more
doaj   +1 more source

L-Shape Propagated Array Configuration With Dynamic Reconfiguration Algorithm for Enhancing Energy Conversion Rate of Partial Shaded Photovoltaic Systems

IEEE Access, 2021
Partial shading is an unavoidable factor that reduces the performance of solar PV systems. The PV system receives uneven irradiation due to partial shading which causes the mismatch loss.
A. Srinivasan, S. Devakirubakaran, B. Meenakshi Sundaram, Praveen Kumar Balachandran, Santhan Kumar Cherukuri, D. Prince Winston, Thanikanti Sudhakar Babu, Hassan Haes Alhelou   +7 more
doaj   +1 more source

Performance and Reliability Improvement of Partially Shaded PV Arrays by One-Time Electrical Reconfiguration

IEEE Access, 2022
Partial shading is the most unexpected scenario encountered by the arrays that degrade the performance causing power reduction, non-convex characteristics curves, losses, hotspot, module damage, and system failure. The adoption of various reconfiguration
Priya Ranjan Satpathy, Pritam Bhowmik, Thanikanti Sudhakar Babu, Chiranjit Sain, Renu Sharma, Hassan Haes Alhelou   +5 more
doaj   +1 more source

Impact of Uneven Shading by Neighboring Buildings and Clouds on the Conventional and Hybrid Configurations of Roof-Top PV Arrays

IEEE Access, 2021
Partial shading is the commonly encountered scenario of building roof-top based PV arrays that mainly occur due to the shadow of the neighbouring buildings and clouds resulting in unexpected losses and deteriorated system performance.
Priya Ranjan Satpathy, Thanikanti Sudhakar Babu, Sathish Kumar Shanmugam, Lakshman Naik Popavath, Hassan Haes Alhelou   +4 more
doaj   +1 more source

A Scalable Hierarchical Dynamic PV Array Reconfiguration under Partial Shading

Energies, 2023
Photovoltaic (PV) arrays are often affected by partial shading (PS), which can significantly reduce their power output. Dynamic reconfiguration is a promising technique for mitigating the negative effects of PS by adjusting the electrical connections of ...
Fatimah Ameen, Abdulrahman Siddiq, Attila Trohák, Rabab Benotsmane   +3 more
doaj   +1 more source

A Dimension-Independent Array Relocation (DIAR) Approach for Partial Shading Losses Minimization in Asymmetrical Photovoltaic Arrays

IEEE Access, 2023
Solar photovoltaic (PV) power system consists of numerous modules connected in series and parallel to generate a certain range of voltage and current outputs.
Pradyumna Mallick, Renu Sharma, Priya Ranjan Satpathy, Sudhakar Babu Thanikanti, Nnamdi I. Nwulu   +4 more
doaj   +1 more source

The THE FREQUENCY OF MISMATCH REPAIR DEFICIENCY IN COLORECTAL CARCINOMA DETERMINED BY IMMUNOHISTOCHEMISTRY

Pakistan Armed Forces Medical Journal, 2021
Objective: To determine the frequency of mismatch repair deficiency in colorectal carcinoma determined by immunohistochemistry. Study Design: Cross-sectional study.
Maria Naseem, Muhammad Asif, Hafeez Ud Din, Muhammad Tahir Khadim, Ahmed Ahson Khan, Shahid Jamal, Iman Shoaib   +6 more
doaj   +1 more source