do you know how did the chemist die?
Train crash near Valhalla, New York
Valhalla train crash
On the evening of February 3, 2015, a commuter train on Metro-North Railroad's Harlem Line struck a passenger car at a grade crossing near Valhalla, New York, United States, between the Valhalla and Mount Pleasant stations, killing six people and injuring 15 others, seven very seriously. 
who is robert dirks? An American chemist known for his theoretical and experimental work in DNA nanotechnology. what is the full form of dna? Deoxyribonucleic acid what are the applications of the last technology you mentioned? X-ray crystallography, nuclear magnetic resonance spectroscopy of proteins what are its different types of designs? Structural design, Sequence design what can you tell me about the first type? Representation by a specific arrangement of nucleic acid strands. and the second type? Nucleic acid design is the process of assigning a specific nucleic acid base sequence to each of a structure's constituent strands so that they will associate into a desired conformation. did the chemist have a nickname? UNANSWERABLE where did he study? Wabash College when did he die? February 3, 2015 what is the limitations of the first application of the technology that you mentioned? It can only be performed if the sample is in crystal form; As the crystal's repeating unit cell, becomes larger and more complex, the atomic-level picture provided by X-ray crystallography becomes more fuzzy are there advantages to using crystals? Crystals offer a stronger signal due to their periodicity. when was it developed? In 1912–1913
wiki:20070626
Valhalla train crash [SEP] Introduction
On the evening of February 3, 2015, a commuter train on Metro-North Railroad's Harlem Line struck a passenger car at a grade crossing near Valhalla, New York, United States, between the Valhalla and Mount Pleasant stations, killing six people and injuring 15 others, seven very seriously. The crash is the deadliest in Metro-North's history, and at the time the deadliest rail accident in the United States since the June 2009 Washington Metro train collision, which killed nine passengers and injured 80. The crash occurred after traffic on the adjacent Taconic State Parkway had been detoured onto local roads following a car accident that closed the road in one direction.