Channel capacity has long been a block in wireless communications. Various approaches are present in the literatures which are very effective in enhancing signal reception quality in fading channels. Various multiple antenna approaches have been used in wireless communications to combat the fading effect, which enhances both the channel capacity and performance greatly. Transmit Antenna Selecti...

ACE inhibitors block B(2) receptor desensitization, thereby potentiating bradykinin beyond blocking its hydrolysis. Angiotensin (Ang)-(1-7) also acts as an ACE inhibitor and, in addition, may stimulate bradykinin release via angiotensin II type 2 receptors. In this study we compared the bradykinin-potentiating effects of Ang-(1-7), quinaprilat, and captopril. Porcine coronary arteries, obtained...

introduction: in modern societies, shift work is an essential component of daily life. since the beginning of research in shift work, researchers have been engaged in the identification of factors predicting adjustment and adaptation to shift work. the concept of adaptation and tolerance refers mainly to the biological response in terms of circadian rhythms and performance efficiency as well as...

RSD 921 is a novel, structurally unique, class I Na+ channel blocking drug under development as a local anaesthetic agent and possibly for the treatment of cardiac arrhythmias. The effects of RSD 921 on wild-type heart, skeletal muscle, neuronal and non-inactivating IFMQ3 mutant neuronal Na+ channels expressed in Xenopus laevis oocytes were examined using a two-electrode voltage clamp. RSD 921 ...

To facilitate the explanation of Fig. 1, the QRS complexes are labelled. The first two show a normal QRS preceded by a normal PR interval. Thereafter the QRS configuration changes. Complexes 3 to 6 show gradual widening, a frontal axis shift to horizontal and loss of the initial q in leads I and V6, an rS pattern in lead III, and the development of a left bundle branch block-like QRS configurat...

We investigate the causal effect of tweets on product demand using variation in microblogging caused by a partial block of the Chinese microblogging platform Sina Weibo due to political events. We analyze the effect of the activity decrease due to the block on viewership of a large set of TV shows that rely on Sina Weibo as an advertising platform. Using a set of difference-in-difference regres...

This paper presents a simulation study for a MDPSK (Differentially Phase shift keying) receiver architecture suitable for short-range and high data rate indoor wireless applications. The proposed architecture comprises a coarse frequency correction (CFC) block, a timing recovery block, a channel estimation block, a carrier recovery block and an equalizer block. The CFC block is based on data ai...

demosaic, color image, shiftinvariant Shiftinvariant linear algorithms can be described completely by the algorithm's response to an impulse input. The so called impulse response can be used as filter kernels when the algorithm is equivalently implemented using convolution. This, however, is not true when the system is block-shift invariant, i.e. when invariance is only at repetitive locations....