Mark J. Schroeder

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OBJECTIVE Normal individuals were used to quantitate electroencephalographic (EEG) changes during concurrent administration of 0.5 and 100 Hz cranial electrotherapy stimulation (CES). METHODS Twelve normal, right-handed males were used in a randomized, double-blind crossover design study. A 3 amplifier system incorporating noise-cancellation was used to(More)
Ischemia in the left lateral and median lobe of the rat liver was provoked by means of a small clip, as applied in human microvascular surgery. After various periods of ischemia (30, 40, 50, 60 and 90 min) the blood flow to these lobes was restored. Twenty-four hours after restoration, the extent of necrosis was estimated quantitatively via morphometric(More)
Conformal antennas printed on thin flexible substrates typically use copper conductors for the radiating portion of the designs. This paper presents an alternative to using copper conductors. More particularly, a novel compact monopole on a thin transparent substrate with 25 μm thick flexible graphene-based conductors for the radiating portion of the(More)
A new meander open complementary split ring resonator (MOCSRR) particle was presented in this paper. The resonant frequency for the particle was 26.5 % lower than an OCSRR particle with the same overall dimensions. The resonant frequency was determined by simulating a CPW test structure in Momentum, modeling the MOCSRR particle with an equivalent circuit(More)
Copper is typically used for the conductor in most antenna designs and flexible materials can be useful to make a conformal antenna. Here, a CPW-fed conformal monopole antenna was designed on a flexible low-cost paper substrate, and flexible graphene-based conductive material was used as an alternative to copper. The antenna was designed for 3.6 GHz(More)
Partial left ventriculectomy (PLV) has been introduced as an alternative surgical therapy for patients with end-stage dilated cardiomyopathy. The physiological benefits of PLV are relatively unknown. Therefore, the objective of this study was to determine the acute effects of PLV by measuring cardiac function before and after PLV. Aortic and left(More)
BACKGROUND Advanced therapies for heart failure (HF), such as mechanical circulatory support (MCS) devices and xenotransplantation, are usually tested in bovine and porcine models. This approach assumes a priori that animal (patho)physiology will closely match that of humans. Systemic aortic input impedance (Z(ART)) is an important physiologic determinant(More)
Numerous parameter estimation techniques exist for characterizing the arterial system using electrical circuit analogs. These techniques are often limited by requiring steady-state beat conditions and can be computationally expensive. Therefore, a new method was developed to estimate arterial parameters during steady and transient beat conditions. A(More)
Objective: Normal individuals were used to quantitate electroencephalographic (EEG) changes during concurrent administration of 0.5 and 100 Hz cranial electrotherapy stimulation (CES). Methods: Twelve normal, right-handed males were used in a randomized, double-blind crossover design study. A 3 amplifier system incorporating noise-cancellation was used to(More)