Hydrogenation of Graphene by Reaction at High Pressure and High Temperature.

The chemical reaction between hydrogen and purely sp(2)-bonded graphene to form graphene's purely sp(3)-bonded analogue, graphane, potentially allows the synthesis of a much wider variety of novel two-dimensional materials by opening a pathway to the application of conventional chemistry methods in graphene. Graphene is currently hydrogenated by exposure to atomic hydrogen in a vacuum, but these methods have not yielded a complete conversion of graphene to graphane, even with graphene exposed to hydrogen on both sides of the lattice. By heating graphene in molecular hydrogen under compression to modest high pressure in a diamond anvil cell (2.

Recurrent partial hydatidiform mole, with a first twin pregnancy, after treatment with clomiphene citrate.

We present a patient, treated for 3 months with clomiphen citrate after 5 years of infertility. This treatment resulted in a twin pregnancy, one degenerated into a partial hydatidiform mole and the other into a very early embryo death. The karyotype was a mosaic one: 63% of metaphases showed triploidy - 69 XXX and 37% diploidy - 46 XX.

Antibody elution method for multiple immunohistochemistry on primary antibodies raised in the same species and of the same subtype.

Double or multiple antigen labeling in IHC classically relies on the existence of primary antibodies raised in different species or of different IgG isotypes to ensure the specific labeling with the secondary detection systems. However, suitable pairs of primary antibodies are not always available or the best choice (e.g.

[Histopathological changes in pseudoexfoliative syndrome].

Purpose: The purpose of this study was to analyse the structural modifications of the anterior structures of the human eyes with exfoliation syndrome in optic microscopy.

Material And Method: For this we used bulbar conjunctival fragments and the anterior part of the eyes who were eviscerated for the complications of exfoliative glaucoma. For the optic microscopy the human specimens were preserved in paraffin and stained with hematoxiline-eosine, PAS and Congo red method.

[Uveal melanoma].

The paper present a clinic and histological study, including all cases of uveal malignant tumours, hospitalized in Ophthalmological Clinic of Craiova in the last 15 years. The follow-up period of cases were 4 years. The diagnosis was established by clinic and paraclinic examination (imaging methods-- MRI, CT, Echo) and histologic examination.

[Conjunctival changes in pseudoexfoliative syndrome].

Purpose: Histopathologic study of conjunctival biopsy specimens in patients with or without exfoliation syndrome and mature cataract to reveal the presence of exfoliative material.

Material And Method: There were studied a group of patients with different ages who needed surgical cataract extraction; all patients were examined preoperative for the presence of exfoliation syndrome. The conjunctival biopsy specimens were obtained at the end of cataract surgical procedure in eyes both with exfoliation syndrome and in fellow eyes without clinical evidence of the disease.

[Neovascular glaucoma--retrospective study].

The paper realized the retrospective evaluation of all cases of neovascular glaucoma hospitalized in Clinic of Ophthalmology of Craiova in the last 15 years. Neovascular secondary glaucoma represents 3,9% of all glaucomas. The most important etiologic factors were the central venous occlusion, diabetic retinopathy, carotid occlusion, intraocular tumors, chronic uveitis, Fuchs heterochromy.

[Ocular parasitosis--particular aspects].

The goal of this study cases are presented in this study. The first case was emphasized in a patient with an epibulbar tumor and the second case was diagnosed with Toxocara Canis. In both cases the ophthalmoscopic images and the clinical evolution were unusual on the other hand etiological diagnosis in both cases was difficult.