Abstract The idea of using ultrashort X-ray pulses here to obtain images of single proteins frozen in time has fascinated and inspired many.It was one of the arguments for building X-ray free-electron lasers.According to theory, the extremely intense pulses provide sufficient signal to dispense with using crystals as an amplifier, and the ultrashor
2014 marks a watershed for Afghanistan, with the withdrawal of the International Security Assistance Force after twelve years, and the very real here risks this withdrawal poses to the capacity of the Afghan state to meet the many internal and external challenges faced by the country.These challenges have significant implications for displaced and
Kebakaran gedung adalah peristiwa penyebab kerusakan yang dapat terjadi kapanpun dan tidak dapat diprediksi.Kebakaran mengakibatkan kerugian materi dan korban jiwa.Faktor penyebab kebakaran antara lain korsleting listrik, kebocoran gas dan kelalaian manusia.Selain itu, penanganan lanjutan yaitu dengan bantuan mobil pemadam kebakaran.Namun, masyarak