Helicopters and ground troops rushed to help people hurt in a strong earthquake that shook districts in northwestern Nepal just before midnight Friday, killing at least 128 people and injuring dozens more, officials said Saturday. Authorities said the death toll was expected to rise, noting that communications were cut off with many places. At the regional hospital in the city of Nepalgunj, more than 100 beds were made available and teams of doctors stood by to help the injured.