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A method was presented to mitigate the errors from uncompensated antenna pattern effects in circular near-field monostatic radar measurements. Firstly, a near field signal model was formulated in the presence of an antenna pattern based on the same scattering approximation used in the isotropic situation. Then a modified version of the near field to far field was derived with this model, jumping the traces of multi direction antenna demanded in near field extrapolation. Numerical simulation and experiment results show that the technique can remove antenna pattern errors and improve the accuracy of the far field RCS patterns. [ABSTRACT FROM AUTHOR]

Objective: To compare the difference of clinical efficacy in the treatment of paroxysmal atrial fibrillation (PAF) between acupuncture combined with Wenzin granule and simple Wenxin granule therapy., Methods: Sixty hospitalized cases of PAF were randomized into a medication group and a medication--acupuncture group. Wenxin granule was given to the patients in the two groups 3 times a day, 9 g each time, 4 weeks as a treatment course. Meanwhile, acupuncture was added to the medication--acupuncture group at bilateral Neiguan (PC 6), Shenmen (HT 7), Ximen (PC 4) with uneven reinforcing-reducing manipulation every 15 min, 1 min each time. The needle was retained for 30 minutes. The acupuncture was given once daily for continuously 4 weeks. The therapeutic efficacy of the two groups was assessed after treatment., Methods: In the medication+acupuncture group, 18 cases were markedly effective, 10 cases were effective and 2 cases were failed, the total effective rate was 93.3%; in the medication group, 15 cases were markedly effective, 8 cases were effective and 7 cases were failed, the total effective rate was 76.7%. There were statistical significances in clinical efficacy between the two groups (P<0.05)., Conclusion: Acupuncture combined with Wenxin granule has a better effect than simple Wenxin granule therapy in the treatment of paroxysmal atrial fibrillation.

Objective: To investigate the effect of fluvastatin on lysophosphatidylcholine (LPC)-induced ventricular arrhythmias and its mechanism., Methods: Twenty male SD rats were randomly allocated into two equal groups, namely LPC treatment group and fluvastatin pretreatment group. Langendorff apparatus was used for cardiac perfusion ex vivo with 5 µmol/L LPC for 5 min followed by washing for 30 min in LPC treatment group, and in fluvastatin pretreatment group, a 30-min perfusion with 10 µmol/L fluvastatin was administered before LPC perfusion. The LPC-induced nonselective cation current (I(NSC)) in the ventricular myocytes was recorded using the whole-cell voltage-clamp method., Results: Fluvastatin significantly inhibited LPC-induced ventricular tachyarrhythmia/fibrillation and I(NSC). The small G-protein Rho inhibitor (C3) and Rho-kinase inhibitor (Y-27632) in the pipette solution also suppressed LPC-induced I(NSC)., Conclusion: Fluvastatin offers cardiac protection against LPC by inhibiting LPC-induced I(NSC). LPC induces fatal arrhythmia via a Rho/Rho-kinase-mediated pathway.

Objective: To investigate the efficacy of pressure reduction by peritoneal catheterization in patients with malignant ascites-induced abdominal compartment syndrome (ACS)., Methods: Clinical data of 29 patients with malignant ascites-induced ACS from October 2002 to October 2008 were analyzed retrospectively. Intra-abdominal pressure (IAP) was reduced by peritoneal catheterization. Changes of intra-abdominal pressure and ascites volume were observed during treatment. Clinical signs and urinary volume were monitored., Results: IAP was less than 25 cm H(2)O in 2 cases, 25 to 35 cm H(2)O in 21 cases, more than 35 cm H(2)O in 6 cases. IAP decreased significantly after drainage of 1000 to 1500 ml of ascites, then IAP curve leveled off. With all the ascites drained, IAP maintained at 11 to 12 cm H(2)O and at 6 to 8 cm H(2)O after 24 hours. Blood pressure was stable without significant changes before and after IAP reduction (P>0.05). The breathing rate and heart rate were improved, and 24 h urinary volume increased significantly after IAP reduction (P<0.01)., Conclusion: Early peritoneal catheterization can improve the cardiac, pulmonary, and renal function in malignant ascites-induced ACS.

The study on the growth and Cd uptake of Spirulina platensis and S. maxima in the water body containing different concentrations of CdCl2 showed that these two species of Spirulinas had high tolerance to CdCl2 but differed in their characters of Cd-uptake. When the concentration of CdCl2 was from 6 mg L(-1) to 24 mg x L(-1), the Cd uptake of these two species at their early growth stage (within 96 h) was mainly through extracellular adsorption. After 10 days of growth, the intracellular Cd content was still negligible in S. platensis, but obviously increased in S. maxima, being 11.6 times higher in treatment 24 mg CdCl2 x L(-1) than in treatment 12 mg CdCl2 x L(-1), and slightly higher than extracellular Cd content, which suggested that under long-term high concentration Cd stress, S. platensis and S. maxima had different mechanisms of Cd uptake and Cd tolerance, i. e., S. platensis had an extracellular mechanism, while S. maxima had both extracellular and intracellular mechanisms and gave priority to intracellular mechanism.