Air-tolerant Fabrication and Enhanced Thermoelectric Performance of n-Type Single-walled Carbon Nanotubes Encapsulating 1,1'-Bis(diphenylphosphino)ferrocene.

The thermally-triggered n-type doping of single-walled carbon nanotubes is demonstrated using 1,1'-bis(diphenylphosphino)ferrocene, a novel n-type dopant. Through a simple thermal vacuum process, the phosphine compounds are moderately encapsulated inside single-walled carbon nanotubes. The encapsulation into SWNTs is carefully characterized using Raman/X-ray spectroscopy and transmission electron microscopy.

Photocatalytic CO2 Reduction Using Cu(I) Photosensitizers with a Fe(II) Catalyst.

Photocatalytic systems developed from complexes with only abundant metals, i.e., Cu(I)(dmp)(P)2(+) (dmp =2,9-dimethyl-1,10-phenanthroline; P = phosphine ligand) as a redox photosensitizer and Fe(II)(dmp)2(NCS)2 as a catalyst, produced CO as the main product by visible light irradiation.

Synthesis and strong photooxidation power of a supramolecular hybrid comprising a polyoxometalate and Ru(II) polypyridyl complex with zinc(II).

A novel method for constructing supramolecular hybrids composed of polyoxometalates and photofunctional metal complexes was developed. A Ru(II) complex with phosphonate groups (RuP) strongly interacted with Zn(II) to afford a 2 : 1 trinuclear metal complex ([(RuP)2Zn](3+)). In dimethylsulfoxide, [(RuP)2Zn](3+) strongly interacted with a Keggin-type heteropolyoxometalate (Si-WPOM) to form a 1 : 1 hybrid ([(RuP)2Zn]-POM).

Systematic conversion of single walled carbon nanotubes into n-type thermoelectric materials by molecular dopants.

Thermoelectrics is a challenging issue for modern and future energy conversion and recovery technology. Carbon nanotubes are promising active thermoelectic materials owing to their narrow bandgap energy and high charge carrier mobility, and they can be integrated into flexible thermoelectrics that can recover any waste heat. We here report air-stable n-type single walled carbon nanotubes with a variety of weak electron donors in the range of HOMO level between ca.

Analysis of the relationship between muscle sympathetic nerve activity and cardiac 123I-metaiodobenzylguanidine uptake in patients with Parkinson's disease.

To analyze the correlation between muscle sympathetic nerve activity (MSNA) and cardiac (123)I-metaiodobenzylguanidine (MIBG) uptake in patients with Parkinson's disease (PD), we measured both parameters in 14 PD patients who were 51 to 82 years of age (mean, 63.1 +/- 8.7 years).

Molecular basis for promoter selectivity of the transcriptional activator OmpR of Escherichia coli: isolation of mutants that can activate the non-cognate kdpABC promoter.

Escherichia coli has two osmo-responsive two-component regulatory systems, the EnvZ-OmpR and KdpD-KdpE systems, each of which consists of a sensor histidine protein kinase and a response regulator. The OmpR and KdpE response regulators belong to the same family of DNA-binding proteins, and act as positive transcriptional factors in response to the medium osmolarity. However, OmpR specifically activates the ompC gene encoding the OmpC outer membrane protein, whereas KdpE exclusively activates the kdpABC operon encoding the high-affinity Kdp potassium-transporter.

Chronological changes of sympathetic outflow to muscles in amyotrophic lateral sclerosis.

To confirm correlations between muscle sympathetic nerve activity (MSNA) and patients' chronological data, we selected 40 consecutive patients with sporadic amyotrophic lateral sclerosis (ALS) recorded by similar methods. MSNA at rest was quantified as the number of sympathetic bursts per 100 heartbeats and as the value expressed as a percentage of the predicted value based on control data. Twelve patients who underwent recordings of MSNA twice at intervals of 6 months or more showed marked decreases in MSNA amplitudes and frequencies between examinations.

Epidural clonidine suppresses the baroreceptor-sympathetic response depending on isoflurane concentrations in cats.

Epidural administration of clonidine induces hypotension and bradycardia secondary to decreased sympathetic nerve activity. In this study, we sought to elucidate the change in baroreflex response caused by epidural clonidine. Thirty-six cats were allocated to six groups (n = 6 each) and were given either thoracic epidural clonidine 4 micro g/kg or lidocaine 2 mg/kg during 0.

Dose-related attenuation of cardiac sympathetic nerve activity and intracardiac conduction with thoracic epidural clonidine in alpha-chloralose-anesthetized cats.

Epidural clonidine produces hypotension, bradycardia and sympatholysis. We studied the dose-effects of thoracic epidural and intravenous clonidine (1 to 8 microg/kg) on cardiac sympathetic nerve activity (CSNA), hemodynamics and intracardiac conduction in cats anesthetized with alpha-chloralose. Mean arterial pressure was decreased with epidural clonidine doses above 2 microg/kg, and to a greater extent with 4 microg/kg than 8 microg/kg.