Kitāb al-ʻIqd al-jawhar al-thamīn fī arbaʻīn ḥadīthan min aḥādīth Sayyid al-Mursalīn / taʼlīf Khātimat al-muḥaddithīn al-Shaykh Ismāʻīl al-ʻAjlūnī al-Jarrāḥī manuscript, 1900

Copy completed on 22 Dhū al-Qaʻdah 1317 [March 24, 1900] in the hand of Aḥmad Fahmī al-ʻAṭṭār al-Dimashqī al-Shāfiʻī "naqlan ʻan nuskhat al-Kuzbarī al-Kabīr."

Hādhihī al-risālah Naṣīḥat al-ikhwān fī ṣawm Rajab wa-Shaʻbān wa-Ramaḍān / taʼlīf al-Shaykh al-ʻĀlim al-ʻĀllāmah al-ʻUmdah al-Fahhāmah al-Shaykh Ismāʻīl al-Jarrāḥī al-ʻAjlūnī : manuscript, undated

Holograph copy.

Hādhā kitāb ʻIqd al-jawhar al-thamīn fī arbaʻīn ḥadīthan min aḥādīth Sayyid al-mursalīn jamʻ al-Shaykh al-ʻAllāmah al-Imām muḥaddith Bilād al-Shām Ismāʻīl al-Jarrāḥī al-shahīr bi-al-ʻAjlūnī : manuscript, 1849

Written in one column, 19 lines per page, in black rubricated in red.

al- Durr al-munaẓẓam fī sharḥ al-ism al-aʻẓam : manuscript, undated

Written in one column, 20 lines per page, in black rubricated in red. Text framed within double red lines and each line framed within a red line.

Tarīkh al-malik al-muʾayyad Ismāʾīl Abī al-Fiḍā, ṣāḥib Ḥamāh.

Published also under title: al-Mukhtaṣar fī akhbār al-bashar.

Atoms for peace : a separate opinion /

"January 25, 1956."

Atoms-for-peace in the Philippines : official report of the Philippine delegation to the International Conference on the peaceful uses of atomic energy /

On t.p.: Geneva, 1955.

Latáifo ʼl-maʼárif, auctore Abu Mancur Abdolmalik ibn MOhammed ibn Ismáʼíl at-Thaʼálibí, quem librum e codd.

Mode of access: Internet.

Data index for energy transfer collisions of atoms and molecules, 1970-1979 /

Mode of access: Internet.

Hydrogen in chemical atoms;

Accompanied by "Supplement [no.1]- " (V.) Published: Pittsburgh, Markowitz and Haas, 1951-

Chemical kinetics of reactions of the sulphur oxides, S-atoms, SH and H₂S; dissociation, photolysis and reactions with H, O, O₂, O₃ and the nitrogen oxides.

"Based on the files of the Chemical Kinetics Information Center and an examination of Chemical abstracts 1962-1970."

Entanglement of two atoms

We discuss the problem of creation of entangled states in a system of two two-level atoms which are separated by an arbitrary distance r(12) and interact with each other via the dipole-dipole interaction and both are driven by a laser field. The entangled antisymmetric state of the system is included throughout, even for small inter-atomic separations. Different mechanisms leading to effective transfer of population to the antisymmetric state are identified. The steady-state values of concurrence which is a measure of entanglement are calculated showing that perfect entanglement can be reached in case of two non-identical atoms.

Entangling two atoms via spontaneous emission

We discuss the creation of entanglement between two two-level atoms in the dissipative process of spontaneous emission. It is shown that spontaneous emission can lead to a transient entanglement between the atoms even if the atoms were prepared initially in an unentangled state. The amount of entanglement created in the system is quantified by using two different measures: concurrence and negativity. We find analytical formulae for the evolution of concurrence and negativity in the system. We also find the analytical relation between the two measures of entanglement. The system consists of two two-level atoms which are separated by an arbitrary distance r(12) and interact with each other via the dipole-dipole interaction, and the antisymmetric state of the system is included throughout, even for small interatomic separations, in contrast to the small-sample model. It is shown that for sufficiently large values of the dipole-dipole interaction initially the entanglement exhibits oscillatory behaviour with considerable entanglement in the peaks. For longer times the amount of entanglement is directly related to the population of the slowly decaying antisymmetric state.

New insights into the interaction of hydrogen atoms with boron-substituted carbon

Boron substitution in carbon materials has been comprehensively investigated using the density functional theory method. It was found that there is a correlation between the stability of the graphene sheet, the distribution of T electrons, the electrostatic potential, and the capability for hydrogen-atom adsorption. Boron substitution destabilizes the graphene structure, increases the density of the electron wave around the substitutional boron atoms, and lowers the electrostatic potential, thus improving the hydrogen adsorption energy on carbon. However, this improvement is only ca. 10-20% instead of a factor of 4 or 5. Our calculations also show that two substitutional boron atoms provide consistent and reliable results, but one substitutional boron results in contradictory conclusions. This is a warning to other computational chemists who work on boron substitution that the conclusion from one substitutional boron might not be reliable.