We have isolated CD8+ alpha/beta T cells from the blood of atopic and healthy individuals which recognize a nonpeptide antigen present in an allergenic extract from Parietaria judaica pollen. This antigen appears to be a carbohydrate because it is resistant to proteinase K and alkaline digestion, is hydrophilic, and is sensitive to trifluoromethane-sulphonic and periodic acids. In addition, on ...

Accurate global measurements of tropospheric CO2 mixing ratios are needed to better understand the global carbon cycle and the CO2 exchange between land, oceans and atmosphere. NASA Goddard Space Flight Center (GSFC) is developing a pulsed lidar approach for an integrated path differential absorption (IPDA) lidar as a candidate for the NASA’s planned ASCENDS mission to allow global measurements...

because of having good performance in cancelling the clutter echoes, pulsed-doppler radar is the best solution in some applications. in this paper a new algorithm for signal design and signal processing in high prf radar is developed. the robust chinese remainder theorem is the basis for estimating the unambiguous ranges in the proposed algorithm. two high prf pulsed-doppler radars are designed...

We report the discovery of the X-ray transient SAX J2103.5+4545 which was active from Febru-ary to September 1997. The observed peak intensity of 20 mCrab (2 to 25 keV) occurred on April 11. An analysis of data obtained around the time of the peak revealed a pulsed signal with a period of 358.61 ± 0.03 s on MJD 50569. The pulse profile has a pulsed fraction of ∼ 40%. No change in the pulse peri...

In this study, AlCrN coatings were deposited using modulated pulsed power magnetron sputtering (MPPMS) with different power pulse parameters by varying modulated pulsed power (MPP) charge voltages (350 to 550 V). The influence of power pulse parameters on the microstructure, mechanical properties and thermal stability of the coatings was investigated. The results indicated that all the AlCrN co...

Articles you may be interested in Thermomigration and electromigration in Sn58Bi solder joints Electromigration in flip chip solder joints having a thick Cu column bump and a shallow solder interconnect Effect of entropy production on microstructure change in eutectic SnPb flip chip solder joints by thermomigration Appl. Reliability of solder joints under Electromigration (EM) and Thermomigrati...

background: acanthosis nigricans (an) is a brown to black, velvety hyperpigmentation of the skin that usually involves cutaneous folds. treatment of an is important regarding cosmetic reasons and various therapeutic modalities have been used for these purposes. the goal of this study was to compare the effectiveness of long-pulsed alexandrite laser and topical tretinoin-ammonium lactate for tre...