Superconducting boron doped nanocrystalline diamond microwave coplanar resonator

A superconducting boron doped nanocrystalline diamond (B-NCD) coplanar waveguide resonator (CPR) is presented for kinetic inductance ($L_k$) and penetration depth ($\lambda_{\rm{L}}$) measurements at microwave frequencies of 0.4 to 1.2 GHz and at temperatures below 3 K. Using a simplified effective medium CPR approach, this work demonstrates that thin granular B-NCD films ($t\approx$ 500 nm) on Si have a large penetration depth ($\lambda_{\rm{L}}\approx 4.3$ to 4.4 $\mu$m), and therefore an associated high kinetic inductance ($L_{k,\square} \approx$ 670 to 690 pH/$\square$). These values are much larger than those typically obtained for films on single crystal diamond which is likely due to the significant granularity of the nanocrystalline films. Based on the measured Q factors of the structure, the calculated surface resistance in this frequency range is found to be as low as $\approx$ 2 to 4 $\mu\Omega$ at $T<2$ K, demonstrating the potential for granular B-NCD for high quality factor superconducting microwave resonators and highly sensitive kinetic inductance detectors.Comment: First draf

Relation of gallbladder function and Helicobacter pylori infection to gastric mucosa inflammation in patients with symptomatic cholecystolithiasis

Background. Inflammatory alterations of the gastric mucosa are commonly caused by Helicobacter pylori (Hp) infection in patients with symptomatic gallstone disease. However, the additional pathogenetic role of an impaired gallbladder function leading to an increased alkaline duodenogastric reflux is controversially discussed. Aim:To investigate the relation of gallbladder function and Hp infection to gastric mucosa inflammation in patients with symptomatic gallstones prior to cholecystectomy. Patients: Seventy-three patients with symptomatic gallstones were studied by endoscopy and Hp testing. Methods: Gastritis classification was performed according to the updated Sydney System and gallbladder function was determined by total lipid concentration of gallbladder bile collected during mainly laparoscopic cholecystectomy. Results: Fifteen patients revealed no, 39 patients mild, and 19 moderate to marked gastritis. No significant differences for bile salts, phospholipids, cholesterol, or total lipids in gallbladder bile were found between these three groups of patients. However, while only 1 out of 54 (< 2%) patients with mild or no gastritis was found histologically positive for Hp, this infection could be detected in 14 (74%) out of 19 patients with moderate to marked gastritis. Conclusion: Moderate to marked gastric mucosa inflammation in gallstone patients is mainly caused by Hp infection, whereas gallbladder function is not related to the degree of gastritis. Thus, an increased alkaline duodenogastric reflux in gallstone patients seems to be of limited pathophysiological relevance. Copyright (c) 2006 S. Karger AG, Basel

Quantitative analysis of the interaction between a dc SQUID and an integrated micromechanical doubly clamped cantilever

We provide simulations to quantitatively describe the interaction between a dc superconducting quantum interference device (SQUID) and an integrated doubly clamped cantilever. The simulations have been performed using the SQUID equations described by the resistively and capacitively shunted junction model coupled to the equation of motion of a damped harmonic oscillator. We have chosen to investigate an existing experimental configuration and have explored the motion of the cantilever configuration and the reaction of the SQUID as a function of the voltage flux V(Φ) V(Φ) characteristics. We clearly observe the Lorentz force back-action interaction and demonstrate how a sharp transition state drives the system into a nonlinear-like regime and modulates the cantilever displacement amplitude, simply by tuning the SQUID parameters

A study of certain features in connection with enteric group infection in the army in India

1. Value of the Widal test in inoculated individuals; 2. The effects of a 1 c.c. dose of T.A.B. vaccine in reinoculation 3. Residual inoculation agglutinins 4. Results of blood culture in bacteriological diagnosi

A Compilation of Reported Non-Tariff Measures: Description of the Information

The compilation of NTMs for goods and services described in this paper cover 53 countries, and it was constructed so as to focus upon members of the Asia Pacific Economic Cooperation forum (APEC) and the proposed Free Trade Area of the Americas (FTAA). The compilation is organized by country, category, generic barrier, specific barrier, sector, product, source, and year. It provides information on goods and services and gives the reference source for each entry. The information contained is expected to be of potential use to researchers and policymakers

A Compilation of Reported Non-Tariff Measures: Description of the Information

The compilation of NTMs for goods and services described in this paper cover 53 countries, and it was constructed so as to focus upon members of the Asia Pacific Economic Cooperation forum (APEC) and the proposed Free Trade Area of the Americas (FTAA). The compilation is organized by country, category, generic barrier, specific barrier, sector, product, source, and year. It provides information on goods and services and gives the reference source for each entry. The information contained is expected to be of potential use to researchers and policymakers.International Relations/Trade,