Breath analysis, a promising new field of medicine and medical instrumentation, potentially offers noninvasive, real-time, and point-of-care (POC) disease diagnostics and metabolic status monitoring. Numerous breath biomarkers have been detected and quantified so far by using the GC-MS technique. Recent advances in laser spectroscopic techniques and laser sources have driven breath analysis to ...

The development of laser diodes that deliver more than 10 W of output has changed the picture of the laser market. High-power devices now offer many advantages over conventional lasers of similar power levels, such as carbon dioxide or lamp-pumped Nd:YAG lasers. Their high efficiency (>30% wall-plug efficiency) promotes compact size as well as simplicity in power supply and cooling, which make ...

aims: tehran’s uncontrolled expansion, which promoted housing, public utilities, industries and increase of vehicles caused the problem of air pollution. necessary information about air quality in different places and different times is the first step of combating the air pollution. the purpose of this study was to investigate the annual, monthly and hourly average of 5 criteria air pollutants ...

Observations of seasonal variations of neutron flux from the high-energy neutron detector (HEND) on Mars Odyssey combined with direct measurements of the thickness of condensed carbon dioxide by the Mars Orbiter Laser Altimeter (MOLA) on Mars Global Surveyor show a latitudinal dependence of northern winter deposition of carbon dioxide. The observations are also consistent with a shallow substra...

In order to better understand the budget of carbon dioxide in the Earth's atmosphere it is necessary to develop a global high precision understanding of the carbon dioxide column. To uncover the `missing sink" that is responsible for the large discrepancies in the budget as we presently understand it, calculation has indicated that measurement accuracy of 1 ppm is necessary. Because typical col...

PURPOSE To evaluate the effectiveness, recurrence rate, and complications of carbon-dioxide laser vaporization in the treatment of Bartholin's gland cysts. METHODS A retrospective study including 127 patients with symptomatic Bartholin' gland cysts submitted to carbon-dioxide laser vaporization at our institution from January 2005 to June 2011. Patients with Bartholin's gland abscesses and th...

Hidradenitis suppurativa (HS) is a chronic, relapsing, inflammatory skin condition that can have a significant psychosocial impact, both with the active disease and with residual scarring. Although a wide variety of treatment options exist for HS, to our knowledge there are no reported modalities aimed specifically at treating HS scarring. We describe the case of an adolescent female who receiv...

Carbon dioxide detection has been of interest to scientists for several years due to the importance of atmospheric carbon concentrations and its effects on Earth’s climate. To help monitor and predict transport of atmospheric carbon, NASA created the Active Sensing of CO2 Emissions over Nights, Days and Seasons (ASCENDS) program. Working alongside NASA, Colorado State University has developed a...

OBJECTIVE To compare the histological and ultrastructural changes in skin collagen with mechanical dermabrasion and pulsed carbon dioxide laser resurfacing in the minipig model. SETTING Academic medical center. SUBJECTS Yucatan minipig animal skin model. MAIN OUTCOME MEASURES Comparison of light microscopic and ultrastructural (electron microscopic) changes in the skin following the 2 res...