Evolving Frontier

Sperm DNA fragmentation testing: an evolving frontier

The management of patients with male infertility is a complex topic with a vast scope in terms of biological and historical importance. Infertile men have played hugely important roles in world history (Abraham, George Washington, Louis XVI); their treatment has been a focus of interest for not just physicians, but also the religious (fertility priests, shamans, clergy), artists (authors, playw...

Feature Selection: An Ever Evolving Frontier in Data Mining

The rapid advance of computer technologies in data processing, collection, and storage has provided unparalleled opportunities to expand capabilities in production, services, communications, and research. However, immense quantities of high-dimensional data renew the challenges to the state-of-the-art data mining techniques. Feature selection is an effective technique for dimension reduction an...

Frontier Sores

(1) An acute phagedenic ulcer, circular in outline with sharp punched out edges usually commencing on the site of some trivial abrasion not necessarily of recent origin. The rapid increase in area and depth of the ulcer was appalling. Within 24 or 48 hours a trivial abrasion might become an ulcer as big as a rupee and with deep fascia exposed in its base. Considerable swelling of surrounding ti...

Frontier orbital engineering of photo-hydrogen-evolving molecular devices: a clear relationship between the H2-evolving activity and the energy level of the LUMO.

Two new Ru(II)Pt(II) dimers, [Ru(bpy)(2)(mu-L2)PtCl(2)](2+) (5) and [Ru(bpy)(2)(mu-L3)PtCl(2)](2+) (6), were synthesized and characterized, and their electrochemical and spectroscopic properties together with their photo-hydrogen-evolving activities were evaluated (bpy = 2,2'-bypridine; L2 = 4'-[1,10]phenanthrolin-5-ylcarbamoyl)-[2,2']bipyridinyl-4-carboxylic acid ethyl ester; L3 = 4'-methyl-[2...

Last Frontier