| 1. |
- Wang, C, et al.
(författare)
-
"Transparent MgAl2O4 ceramic produced by spark plasma sintering"
- 2009
-
Ingår i: SCRIPTA MATERIALIA. - : Elsevier BV. - 1359-6462 .- 1872-8456. ; 61:2, s. 193-196
-
Tidskriftsartikel (refereegranskat)abstract
- A two-step pressure profile was used to prepare transparent MgAl2O4 ceramic without sintering aids by spark plasma sintering (SPS) at 1300 degrees C for 3 min. The influence of the pressure profile was investigated systematically and the discoloration in the present study was attributed to the dislocation formed during he fast densification in SPS. At low pre-load pressure, 5 MPa, with the normal characteristic fast heating rate (100 degrees C min(-1)), high inline transmittance of 51% at 550 nm and 85% at 2000 nm can be achieved. Keywords: Sintering; Oxide; Optical transmission; Dislocation; Ultrafine-grained microstructure
|
|
| 2. |
- Wikstrand, Greger, et al.
(författare)
-
Dynamic Regression Test Selection Based on a File Cache : An Industrial Evaluation
- 2009
-
Konferensbidrag (refereegranskat)abstract
- This paper presents a simple method that computes test case coverage information from information on what files were updated to fix a fault found by the test case. It uses a cache to monitor fault-prone files and recommends test cases to rerun to cover updated files. We present an evaluation of the method during two months of development of a large, industrial, embedded, real-time software system. Our results show that the method is effective, reaching weekly cache hit rates in the range 50-80%.
|
|
| 3. |
- Xu, Min, et al.
(författare)
-
Ototoxicity on cochlear nucleus neurons following systemic application of gentamicin
- 2009
-
Ingår i: Acta Oto-Laryngologica. - : Informa UK Limited. - 1651-2251 .- 0001-6489. ; 129:7, s. 745-748
-
Tidskriftsartikel (refereegranskat)abstract
- Conclusion. The gentamicin-induced pathological alteration in the cochlear nucleus is not exclusively a secondary consequence of the damage in the cochlea. Instead, the toxic effect of gentamicin on the cochlear nucleus may occur simultaneously or even earlier than that on the cochlea. Objectives. To investigate the pathological alteration of cochlear nucleus neurons in guinea pigs following systemic application of gentamicin. Materials and methods. Guinea pigs were injected with gentamicin for I day, 3 days, I week, 2 weeks, and 3 weeks, respectively. In gentamicin-treated animals, the hearing function was evaluated by measuring the auditory brainstem response (ABR). The number and cross-sectional area of substance P-positive neurons in the cochlear nucleus were also measured. Results. The threshold of ABR and the number of substance P-positive neurons in the cochlear nucleus were significantly increased after I week and 3 days of injection of gentamicin, respectively. The cross-sectional area of substance P-positive neurons in the cochlear nucleus was significantly reduced after 1-day injection of gentamicin.
|
|
