Rationalizing Graphene-ZnO Composites for Gas Sensing via Functionalization with Amines.

The rational design of composites based on graphene/metal oxides is one of the pillars for advancing their application in various practical fields, particularly gas sensing. In this study, a uniform distribution of ZnO nanoparticles (NPs) through the graphene layer was achieved, taking advantage of amine functionalization. The beneficial effect of amine groups on the arrangement of ZnO NPs and the efficiency of their immobilization was revealed by core-level spectroscopy, pointing out strong ionic bonding between the aminated graphene (AmG) and ZnO.

Graphene Amination towards Its Grafting by Antibodies for Biosensing Applications.

The facile synthesis of biografted 2 derivatives complemented by a nuanced understanding of their properties are keystones for advancements in biosensing technologies. Herein, we thoroughly examine the feasibility of aminated graphene as a platform for the covalent conjugation of monoclonal antibodies towards human IgG immunoglobulins. Applying core-level spectroscopy methods, namely X-ray photoelectron and absorption spectroscopies, we delve into the chemistry and its effect on the electronic structure of the aminated graphene prior to and after the immobilization of monoclonal antibodies.

Toward On-Chip Multisensor Arrays for Selective Methanol and Ethanol Detection at Room Temperature: Capitalizing the Graphene Carbonylation.

The artificial olfaction units (or e-noses) capable of room-temperature operation are highly demanded to meet the requests of society in numerous vital applications and developing Internet-of-Things. Derivatized 2D crystals are considered as sensing elements of choice in this regard, unlocking the potential of the advanced e-nose technologies limited by the current semiconductor technologies. Herein, we consider fabrication and gas-sensing properties of On-chip multisensor arrays based on a hole-matrixed carbonylated (C-ny) graphene film with a gradually changed thickness and concentration of ketone groups of up to 12.

Manifesting Epoxide and Hydroxyl Groups in XPS Spectra and Valence Band of Graphene Derivatives.

The derivatization of graphene to engineer its band structure is a subject of significant attention nowadays, extending the frames of graphene material applications in the fields of catalysis, sensing, and energy harvesting. Yet, the accurate identification of a certain group and its effect on graphene's electronic structure is an intricate question. Herein, we propose the advanced fingerprinting of the epoxide and hydroxyl groups on the graphene layers via core-level methods and reveal the modification of their valence band (VB) upon the introduction of these oxygen functionalities.

A Blueprint for the Synthesis and Characterization of Thiolated Graphene.

Graphene derivatization to either engineer its physical and chemical properties or overcome the problem of the facile synthesis of nanographenes is a subject of significant attention in the nanomaterials research community. In this paper, we propose a facile and scalable method for the synthesis of thiolated graphene via a two-step liquid-phase treatment of graphene oxide (GO). Employing the core-level methods, the introduction of up to 5.

From graphene oxide towards aminated graphene: facile synthesis, its structure and electronic properties.

In this paper we present a facile method for the synthesis of aminated graphene derivative through simultaneous reduction and amination of graphene oxide via two-step liquid phase treatment with hydrobromic acid and ammonia solution in mild conditions. The amination degree of the obtained aminated reduced graphene oxide is of about 4 at.%, whereas C/O ratio is up to 8.

[Clinical, X-ray, and bacteriological features of drug-resistant tuberculosis].

The data on 1400 patients with first diagnosed drug-resistant tuberculosis, who were followed up in 2000-2005, have been used to analyze the causes of and factors predisposing to the development of clinical, X-ray, and bacteriological features of drug-resistant tuberculosis. The prevalence of its clinical forms with a rapid progression of the process, with complications, comorbidity, the high frequency of multidrug resistance, total resistance, and massiveness and duration of bacterial isolation, which are commonly observed in socially dysadapted patients in incompliance of appropriate treatment regimens, is shown to determine a great epidemic danger. These features should be taken into account on developing and implementing the appropriate measures in both tuberculosis facilities and general hospitals.

[The past, present and future of the blood service of the Armed Forces].

Creation of the civil blood service permitted to supply the military treatment-and-prophylactic institutions with blood, to draw up the plan of support in the event of hostilities. The blood service of the USSR (Russia) Armed Forces originates from 1962 when the blood transfusion stations (BTS) were created in the military districts and navy. The departments of blood transfusion (DBT) were formed in the central hospitals and Military Medical Academy and the stations of blood storage and transfusion not in the regular staff were organized in the garrison hospitals.

[The acid-forming function of the stomach and its hormonal regulation after truncal and combined vagotomies].

The acid-producing function of the stomach and the state of its hormonal regulation were assessed on the basis of the immediate and long-term follow-up results obtained after truncal (334 patients) and combined (96 patients) vagotomy for duodenal ulcer. According to the data of aimed endoscopic pH-metry and gastroimpedancemetry the acid level changes in different parts of the stomach and duodenum were the same at the nearest and remote periods as well as the dynamics of the main hormones responsible for the acid production.

[Changes in the parameters of functional systems of donors undergoing apparatus plasmacytapheresis].

Apparatus plasmacytapheresis resulted in the lowering of total protein level and serum iron content in the blood as compared to the initial values. At the same time these parameters were within the range of reference standards and reached the initial levels 3-4 weeks after the completion of the plasmacytapheresis cycle.

[Achievements of transfusiology during World War II 1941-1945 and its present-day problems].

The achievements of Soviet transfusiology in the period of the Great Patriotic War of 1941-1945 and of the Soviet medicine in the following years represent a basis for the successful development of Soviet transfusiology under modern conditions.