The performance of a new kind of double gap resistive plate counter (RPC) has been studied using cosmic rays. The detector was operated with a mixture containing low percentage of isobutane. A comparison with the behaviour of RPC flowed with standard mixture is presented.

Some properties of gas mixtures, composed predominately of helium and lesser amounts of CO2 and isobutane, were measured in a prototype drift chamber. The studies are motivated by the desire to reduce the multiple scattering inside the drift chamber at future high-luminosity, low-energy facilities such as 4 factories, T/charm factories, and B factories. The low atomic number of helium greatly r...

In the present paper we describe a search for gases that allow to reduce the energy of the electrical discharge produced in Resistive Plate Chambers (RPCs) operated in streamer mode, by reducing both the operating voltage and the released charge. This can be achieved, with current gas mixtures of argon, tetrafluoroethane (TFE) and isobutane, by reducing the total amount of quenching components ...

The purpose of this research is to investigate a zeotropic working fluid mixture in terms of its performance in an organic Rankine cycle (ORC) and the heat transfer characteristics in an air-cooled condenser (ACC). The motivation of this study is that it is well known that the use of a mixture improves the efficiency of an ORC system. However, the behaviour of the mixture in the condensers is n...

Studi ini membahas peluang pemanfaatan panasbumi temperatur rendah keluaran wellpad di Pulau Ambon sebagai pembangkit listrik tenaga baru menggunakan siklus biner. Analisis termodinamika dilakukan dengan variasi 5 jenis fluida kerja, yaitu Isopentane, N-pentane, R245fa, Isobutane dan N-butane. Fluida kerja N-butane menghasilkan daya turbin bersih terbesar, 1,287 MW efisiensi termal sebesar 10,9...

In this study at first, in laboratory, three types of vanadium oxide were produced by using porous graphene and amine framework in hydrothermal method nanostructures such as: vanadium oxide - octadecyl amine - graphene, vanadium oxide - dodecyl amine - graphene and vanadium oxide – aniline - graphene (V-ODA-G، V-DDA-G، V-A-G). Then their structures and functions in propane dehydrogenation react...

4-Chloro-N-(2-methyl-1-indolinyl)-3-sulfamoylbenzamide (indapamide), an indoline-containing diuretic drug, has recently been evaluated in a large Phase III clinical trial (ADVANCE) with a fixed-dose combination of an angiotensin-converting enzyme inhibitor, perindopril, and shown to significantly reduce the risks of major vascular toxicities in people with type 2 diabetes. The original metaboli...

As potential hydrogen storage mediums, ammonia borane and its derivatives have been paid an increasing attention owing to their higher hydrogen capacities and facile dehydrogenation properties under moderate conditions. In this chapter, we presented extensive studies on thermodynamic tailoring of dehydrogenation of metal amidobor‐ anes, metal borohydride-ammonia borane complexes, and metal amid...

Borane amine compounds hold promise in a chemical hydrogen storage setting due to their high gravimetric and volumetric content of releasable hydrogen. The heats of formation and the thermodynamics of the dehydrogenation of N-methyl substituted cyclodi-, cyclotriand cyclotetraborazane were predicted at the G3(MP2) level following B3LYP/DGDVZP2 level optimization. The dehydrogenation of the N-me...