Waiting
Login processing...

Trial ends in Request Full Access Tell Your Colleague About Jove
פרק 2
התאוריה האטומית של החומר
The earliest recorded discussion of the basic structure of matter comes from ancient Greek philosophers. Leucippus and Democritus argued that all…
חלקיקים תת אטומיים
Dalton was only partially correct about the particles that make up matter. All matter is composed of atoms, and atoms are composed of three smaller…
יסודות: סמלים כימיים ואיזוטופים
A chemical symbol is an abbreviation used to indicate an element or an atom of an element. For example, the symbol for mercury is Hg. The same symbol…
יונים ומטענים יוניים
In ordinary chemical reactions, the nucleus — which contains the protons and neutrons of each atom and thus identifies the element —…
הטבלה המחזורית
As early chemists discovered more elements, they realized that various elements could be grouped by their similar chemical behaviors. One such…
מסה אטומית
Atoms — and the protons, neutrons, and electrons that compose them — are extremely small. For example, a carbon atom weighs less than 2…
מסה מולרית
The identity of a substance is defined not only by the types of atoms or ions it contains but by the quantity of each type of atom or ion. For…
ההפרדה Sr אוטומטי <sup>90</sup>ו- Preconcentration במערכת המעבדה-על-שסתום ברמה Ppq
A quick, automated and portable system for the separation and determination of radiostrontium in aqueous samples, using Sr-resin and multi sequential…
שיטות לקביעת מבנה ומנגנונים של זיהוי יון מתכת וחמצון פעילות של כריכת מתכת Oligopeptides
Electrospray ionization (ESI) can transfer an aqueous-phase peptide or peptide complex to the gas-phase while conserving its mass, overall charge,…
הכנת קרן Isotopically טהורה <sup>229</sup>Th יון ללימודים של <sup>229m</sup>th
A methodology is described to generate an isotopically pure 229Th ion beam in the 2+ and 3+ charge states. This ion beam enables one to investigate…

Get cutting-edge science videos from JoVE sent straight to your inbox every month.

Waiting X
Simple Hit Counter