PURPOSE We review our initial experience with direct percutaneous transluminal angioplasty (PTA) as a reperfusion treatment for acute occlusion of the middle cerebral artery. METHODS Ten patients in whom successful thrombolysis might not be expected because of the risk of hemorrhagic complications or reocclusion were treated with direct PTA. When early ischemic findings were present on the in...

Abstract Pulsar timing array (PTA) experiments are expected to detect nano-Hertz gravitational waves (GWs) emitted from individual inspiralling supermassive binary black holes (SMBBHs). The GW signals a small fraction of these SMBBHs may be diffractively lensed by intervening galaxies. In this paper, we investigate the diffractive lensing effects on continuous and estimate detectable number suc...

BACKGROUND Sustained benefits of drug-eluting stents in femoropopliteal arteries have not been demonstrated. This prospective, multinational, randomized study was designed to compare the 12-month safety and effectiveness of a polymer-free, paclitaxel-coated nitinol drug-eluting stent (DES) with percutaneous transluminal angioplasty (PTA) and provisional bare metal stent (BMS) placement in patie...

BACKGROUND Foot drill involving marching and drill manoeuvres is conducted regularly during basic military recruit training. Characterising the biomechanical loading of foot drill will improve our understanding of the contributory factors to lower limb overuse injuries in recruits. AIM Quantify and compare forces, loading rates and accelerations of British Army foot drill, within and between ...

PURPOSE Atherectomy has emerged as an alternative to percutaneous transluminal angioplasty (PTA) for endovascular reopening. Despite increasing use of atherectomy (and higher cost of atherectomy catheters compared with balloon catheters), few studies have compared outcomes and costs with other reopening strategies. METHODS We performed a retrospective cohort study involving all patients under...

By HERBERT I. HoRowlrz, WINTHROP P. \Vn cox AND MITSU M. FUJIMOTO R OSENTHAL ET AL. in 19531: described a familial hemorrhagic disorder distinct from classical hemophilia and involving women as well as men. The disorder was attributed to a deficiency of a new blood clotting factor which these authors named plasma thromboplastin antecedent ( PTA ) ; it was present in serum, normal plasma, and pl...

The [FeFe] hydrogenase enzyme active site inspired complexes [Fe(2)(mu-C(6)H(4)S(2))(CO)(5)PTA] (1PTA) and [Fe(2)(mu-C(6)H(4)S(2))(CO)(4)PTA(2)] (1PTA(2)) (PTA = 1,3,5-triaza-7-phosphaadamantane) were synthesized and characterized. The ability of 1PTA and 1PTA(2) to catalytically produce molecular hydrogen in solution from the weak acid acetic acid was examined electrochemically and compared to...

The paper contributes to the current discussion on the role of participatory methods in the context of technology assessment (TA) and science and technology (S&T) governance. It is argued that TA has to be understood as a form of democratic policy consulting in the sense of the Habermasian model of a "pragmatist" relation of science and politics. This notion implies that public participation is...

A 62-year-old woman receiving chemotherapy with etoposide showed discrepant uric acid values as measured by a direct phosphotungstic acid (PTA) method (150 mg/L) compared with a uricase technique (40 mg/L). After ultrafiltration, the positive interference for the direct PTA method was retained in the protein fraction, but not in the filtrate. Adding exogenous etoposide to drug-free serum confir...

The title compound, C(7)H(15)N(3)OP(+)·I(3) (-), is a derivative of the well known water-soluble amino-phosphine 1,3,5-triaza-7-phosphaadamantane (PTA). The crystal structure is composed of a cage-like 1-methyl-1-azonia-3,5-diaza-7-phospha-tricyclo-[3.3.1.1]decane 7-oxide cation and a triiodide anion. The N-methyl-ation of the PTA cage results in a slight elongation of the corresponding C-N bon...