â liquefied natural gas (lng) is the most economical way of transporting natural gas (ng) over long distances. liquefaction of ng by using vapor compression refrigeration system requires high operating and capital cost. due to lack of systematic design methods for multistage refrigeration cycles, the conventional approaches of determining optimal cycle configuration are mostly based on trial-an...

We study the comovement of international business cycles in a time-series clustering model with regime switching. extend framework Hamilton and Owyang (2012) to include time-varying transition probabilities determine what drives simultaneous cycle turning points. find four groups, or “clusters,” countries that experience idiosyncratic recessions relative global cycle. In addition, we primary in...

Relaxation and temperature cycles of thermoremanent magnetization, MTRM, in the superspin-glass phase of [Co80Fe20(0.9 nm)/Al2O3(3 nm)]10 have been investigated. The relaxation of MTRM exhibits ageing phenomena. In negative temperature cycles for temperature steps larger than 1 K the magnetic state is retrieved (memory effect) on returning to the measurement temperature. This property is indepe...


 The extraction of circadian cycles from experimental data can be interpreted as a specific case time-series or signal analysis, but chrono- biology and analysis appear to have developed according separate paths. Whereas some techniques such continuous (CWT) discrete wavelet (DWT) are used frequently in rhythmobiology, other specialized methdos digital filters, nonlinear mode decompositio...

the target of this study was to investigate the possibility of mdf productionfrom eucalyptus camaldulensis wood. mdf fibers were produced applying threelevels of steaming time. laboratory mdf boards were produced using thegenerated fibers and different pressing temperature and time. physical andmechanical properties of mdf panels were measured using relevant eu testmethods and were statisticall...

The current paper examines the application of finite-time thermodynamics in order to compare the performance between air-standard cycles, i.e. Atkinson, Diesel and Otto cycles with constant specific heats of working fluid. The effects of input temperature and compression ratio on the net output work and efficiency of the Atkinson cycle, Diesel cycle and Otto cycle are analyzed. It is assumed th...

A robust, self-healing superhydrophobic poly(ethylene terephthalate) (PET) fabric was fabricated by a convenient solution-dipping method using an easily available material system consisting of polydimethylsiloxane and octadecylamine (ODA). The surface roughness was formed by self-roughening of ODA coating on PET fibers without any lithography steps or adding any nanomaterials. The fabric coatin...

 liquefied natural gas (LNG) is the most economical way of transporting natural gas (NG) over long distances. Liquefaction of NG by using vapor compression refrigeration system requires high operating and capital cost. Due to lack of systematic design methods for multistage refrigeration cycles, the conventional approaches of determining optimal cycle configuration are mostly based on trial-an...