We are developing an ultra-high resolution timeto-digital converter (TDC) based on a novel scheme combining a digital “coarse” TDC and analog “fine” TDC. The coarse TDC is derived from a previously reported RSFQ time digitizer based on binary counters. The fine TDC is based on an analog prescaler. A 31 GHz counter defines the coarse (~32 ps) time resolution, while the prescaler provides a fine ...

1Nuclear Fuel Cycle Research School, Nuclear Science & Technology Research Institute, Atomic Energy Organization of Iran, P.O. Box 14395-836, Tehran, Iran 2Department of Chemistry, College of Basic Science, Islamic Azad University, Yadegar-e-Imam Khomeini (RAH) Branch, P.O. Box 18155-144, Tehran, Iran 3Department of Chemistry, K.N. Toosi University of Technology, P.O. Box 15875-4416, Tehran, Ir...

BACKGROUND Our goal was to characterize temporal patterns of skin Tissue Dielectric Constant (TDC) as a foundation for possible TDC use to detect and quantify lymphedema. Although limb volumes and bioimpedance analysis (BIA) are used for this purpose, potential TDC-method advantages are that it can be done in about 10 seconds at any body site to depths from 0.5 to 5.0 mm below the epidermis. ...

Tissue dielectric constant (TDC) measurements at 300 MHz via the coaxial line reflection method are useful to evaluate local skin tissue water and its change, but virtually all available data relate to measurements on women. Because TDC values in part depend on skin thickness, we hypothesized that differences in male-female skin may be associated with male-female differences in TDC. To test thi...

in the present paper, the idea of braking energy regeneration and reusing that energy during acceleration for a refuse truck is comprehended. according to their driving cycle, the refuse trucks have a good potential for braking energy regeneration. on the other hand, hydraulic hybrid is a powertrain with high power density which is appropriate for energy regeneration. in the primary stage of th...

Dopamine is one of the important medications of Portulaca oleracea L. To optimize the production of dopamine, one of the methods is the identification and engineering of metabolite pathways. To investigate the tyrosine decarboxylase (TDC) and tyrosinase, which seem to be the most important genes in dopamine synthesis pathway, hairy roots were produced from Portulaca oleracea using Agrobacterium...

Spark ignition (SI) engines are often used as distributed power generation applications. They ensure quick deployment, cost effective electricity, and a valid choice for back-up power. An essential aspect small size is to improve control margins without increasing the number of sensors. It not uncommon employ fixed timing such units, with so called wasted spark systems. These feature two events...

Tryptophan decarboxylase (TDC) is a cytosolic enzyme that catalyzes an early step of the terpenoid indole alkaloid biosynthetic pathway by decarboxylation of L-tryptophan to produce the protoalkaloid tryptamine. In the present study, recombinant TDC was targeted to the chloroplast, cytosol, and endoplasmic reticulum (ER) of tobacco (Nicotiana tabacum) plants to evaluate the effects of subcellul...

OBJECTIVE Although twist-drill craniostomy (TDC) has a number of procedural advantages and an equivalent outcome compared to burr hole craniostomy (BHC) for the treatment of chronic subdural hematomas (CSDHs), the latter technique remains the preferred method. We analyzed symptomatic CSDHs in whom TDC at the pre-coronal suture entry point (PCSEP) was the primary method for hematoma drainage and...

This paper describes the development of car drive cycle for simulation of vehicles exhaust gas emissions and fuel economy. In this research work, the development of light vehicle drive cycle for city of Tehran has been performed. First, the approach to develop a drive cycle has been described. The necessary measuring tools and software have then been provided, and the car speed has been recorde...