Fertility Rate and Sperm DNA Fragmentation Index following Varicocelectomy in Primary Infertile Men with Clinical Varicocele: A Prospective Longitudinal Study.

Background: Varicocele is one of the most common treatable causes of male infertility, and its treatment may be beneficial for fertility. This study aimed to evaluate fertility rate and DNA fragmentation index (DFI) following varicocelectomy in primary infertile men with clinical varicocele.

Materials And Methods: This prospective longitudinal study was conducted on primary infertility men, in a tertiary center from December 2018 to December 2019 with one-year follow-up.

Topotactic transformation of single crystals: From perovskite to infinite-layer nickelates.

Topotactic transformations between related crystal structures are a powerful emerging route for the synthesis of novel quantum materials. Whereas most such “soft chemistry” experiments have been carried out on polycrystalline powders or thin films, the topotactic modification of single crystals, the gold standard for physical property measurements on quantum materials, has been studied only sparsely. Here, we report the topotactic reduction of LaCaNiO single crystals to LaCaNiO using CaH as the reducing agent.

Comparison of surgical complications following hip hemiarthroplasty between the posterolateral and lateral approaches.

Introduction: Femur neck fractures are common fractures among the elderly. Hemiarthroplasty is a surgical choice for femur neck fractures in patients older than 70 years. This surgery is performed using two main methods: Posterolateral and Direct lateral.

Superconductivity at 4.8 K and Violation of Pauli Limit in LaIRu Comprising Ru Honeycomb Layer.

We discovered superconductivity at 4.8 K in the hexagonal layered compound LaIRu comprising a triangular lattice of the La and a honeycomb lattice of the Ru atoms. First-principles calculations reveal a two-dimensional band structure made up of La 5 and Ru 4 electrons and formal oxidation states +1.