Key degradation mechanisms of perovskite solar cells and strategies for enhanced stability: issues and prospects.

Perovskite materials have garnered significant attention within a very short period of time by achieving competitive efficiency. In addition, this material demonstrated intriguing optoelectronic properties and versatile applications. Although they have confirmed amazing efficiency in solar cells at the laboratory scale, mass commercial manufacturing of perovskite solar cells (PSCs) is still a problem due to their poor longevity.

Acute Aortic Dissection Masquerading as Acute Coronary Syndrome: Is Echocardiogram Mandatory before Primary Percutaneous Coronary Intervention?

A 58-year-old hypertensive man was admitted with severe central chest pain and palpitation. His electrocardiogram (ECG) showed fast atrial fibrillation with features suggestive of left main coronary artery occlusion. He was taken to the Cath-lab but surprisingly, coronary angiogram (CAG) showed no stenosis.

An extensive image dataset for deep learning-based classification of rice kernel varieties in Bangladesh.

This article introduces a comprehensive dataset developed in collaboration with the Bangladesh Institute of Nuclear Agriculture (BINA) and the Bangladesh Rice Research Institute (BRRI), featuring high-resolution images of 38 local rice varieties. Captured using advanced microscopic cameras, the dataset comprises 19,000 original images, enhanced through data augmentation techniques to include an additional 57,000 images, totaling 76,000 images. These techniques, which include transformations such as scaling, rotation, and lighting adjustments, enrich the dataset by simulating various environmental conditions, providing a broader perspective on each variety.