Laccase-catalyzed oxygen delignification of kraft pulp offers some potential as a replacement for conventional chemical bleaching and has the advantage of requiring much lower pressure and temperature. However, chemical mediators are required for effective delignification by laccase, and their price is currently too high at the dosages required. To date, most studies have employed laccase from ...

Although medical service delivery via home-based telehealth technology (HBT) is gaining wider acceptance in managing chronic illnesses such as diabetes or chronic obstructive pulmonary disease, few studies have tested HBT applications of psychotherapy. Clinicians, administrators, and researchers question whether delivering psychotherapeutic services to patients in their homes via video-conferen...

We have demonstrated a P-n-P Ga&JInGaAsN/GaAs double heterojunction bipolar transistor (DHBT). The device has a low turn-on voltage (Vo~) that is 0.27 V lower than in a comparable P-n-p AIGaAs/GaAs HBT. The device shows nearide.al DC characteristics with a curfent gain (~) greater than 45. The high-speed performance of the device are comparable to a similar P-n-p AIGaAs/GaAs HBT, with ~~ and ~M...

Heterojunction Bipolar Transistors (HBTs) are considered excellent candidates for low phase noise millimeter wave applications. They exhibit outstanding high frequency performance and also low baseband noise compared to MESFET and HEMT devices. We have designed and demonstrated state-of-the art microwave and millimeter wave power HBTs using the baseline HBT process at HRL Laboratories. An HBT t...

ale or female homosexual, bisexual and transgender indiiduals (HBT) can be more exposed to viral hepatitis, but few tudies worldwide have been conducted about viral hepatitis nowledge among HBT.1–5 The aim of this study was to evalate viral hepatitis knowledge and potential risk of HBT and eterosexual individuals attending a Gay Pride Event. A cross-sectional survey was carried out among a rano...

It is generally assumed that as a result of multiple scattering, the source distribution measured in HBT interferometry corresponds to a chaotic source at freeze-out. This assumption is subject to question as effects of multiple scattering in HBT measurements must be investigated within a quantum-mechanical framework. Applying the Glauber multiple scattering theory at high energies and the opti...

Based on a power high-voltage (HV) HBT technology the successful down scaling towards low-power devices for mixed signal integrated circuits is described. Stress effects and mechanical stability issues required processing adaptations. High yields of 99.8 % for 3x30 μm 2 and 99.0% for 2x10 μm 2 HV-HBTs were achieved. This allows for fabrication of complex integrated circuits with several hundred...

We study the reconstruction of the source function in space-time directly from the measured HBT correlation function using the Maximum Entropy Principle. We find that the problem is ill-defined without at least one additional theoretical constraint as input. Using the requirement of a finite source lifetime for the latter we find a new Gaussian parametrization of the source function directly in...

Among the many benefits InGaP brought to the GaAs-based heterojunction bipolar transistor (HBT) over the last few years, nothing is more profound than the drastic improvement it provided in the long-term reliability. Today, it is relatively common to obtain activation energies higher than 1.5eV with InGaP HBTs operating under bias and temperature conditions suitable for modern telecommunication...