Effect of Heat Treatment on the Microstructure and Mechanical Properties of Rotary Friction Welded AA7075 and AA5083 Dissimilar Joint.

The present work aims to investigate the changes in the microstructural and mechanical properties of various pre- and post weld heat treatments (PWHTs) on rotary friction welded dissimilar (AA7075 and AA5083) aluminum alloys. The investigation focused on the evolution of weld macro- and microstructures, as well as the changes in hardness and tensile properties resulting from friction welding. The joint integrity was studied through various characterization techniques, and no cracks or incomplete bonding was observed.

Technetium-99m Thyroid Scintigraphy and Human Leukocyte Antigen - B35 in Sub-Acute Thyroiditis.

Introduction: Sub-acute thyroiditis possibly caused by a viral infection of thyroid gland is associated with a surge in thyroxine levels of the patient. Women in the younger age group are affected more than men. Markedly decreased radioactive iodine thyroid uptakes in a setting of thyrotoxicosis associated with elevated thyroxine levels and reduced thyroid stimulating hormone levels usually clinches the diagnosis.

Radioactive Iodine-131 as a Definitive Treatment in Rare Association of Down Syndrome With Hyperthyroidism: A Case Report and Review of Literature.

Down syndrome characterized by trisomy of chromosome 21 is frequently associated with thyroid dysfunctions due to underlying autoimmune disorders. Hypothyroidism is the commonest thyroid dysfunction and hyperthyroidism, usually Graves' disease, is far less common. On literature review, we came across approximately 112 cases reported so far with the first such case report in 1946.

Application of the basic and specific classification on patterned hair loss in indians.

Context: Several classifications for pattern hair loss (PHL) have been used over the years. The Norwood-Hamilton classification for men and Ludwig's classification for women is used commonly, but they have their limitations.

Aims: The objective of the following study is to evaluate the efficacy of the basic and specific (BASP) classification in Indian populations.

Developmental and cell type characterization of bundle sheath and mesophyll chloroplast transcript abundance in maize.

The C4 grass Zea mays separates light and light-independent photosynthetic processes into two leaf cell types: bundle sheath (BS) and mesophyll (M). When mature, BS and M cells have anatomically and biochemically distinct chloroplasts that must cooperate to complete the process of photosynthesis. This report compares changes in transcript abundance between young and mature maize BS and M chloroplasts from specific segments of the leaf developmental gradient.

Early exposure to a nonhygienic environment alters pulmonary immunity and allergic responses.

The hygiene hypothesis suggests that early life exposure to a nonhygienic environment that contains endotoxin reduces the risk of developing allergic diseases. The mechanisms underlying the hygiene hypothesis are unclear and may involve subtle immune system interactions that occur during maturation. Experimental objectives of this study were to use a novel animal model to test the hygiene hypothesis and to characterize early life immune system responses to a nonhygienic environment.