Although considerable improvements in the performance of LED devices have been demonstrated, c-plane polar gallium nitride (GaN -based LEDs still have unsolved problems that adversely affect their performance, which are caused by piezoelectric and spontaneous polarization [3, 4].
Months later we got married and for the first time I discovered he has unsolved issues.
The current system for verbal autopsy does seem to provide useful information on the causes of death in most cases, but it still has unsolved issues for stillbirths [ 76, 77].
Micro epidemics and dominant clusters, like C-2, transmited among Danes, indicate that DK, being in a process aiming at TB elimination, still has unsolved TB control problems [ 27].
Exclusion criteria: admission for reasons other than decompensation of cirrhosis (other co-morbid diseases, especially established cardiovascular or renal disease); presence of organ failure (as defined later), malignancy (extra-hepatic or a hepatocellular carcinoma); patients who have undergone major surgery (for example liver resection) or have unsolved surgical problems; pregnancy.
Ms. Triano's murder had gone unsolved for nearly four decades without any real suspects.
The murder of an anti-mafia policeman in 1909 had remained unsolved until dozens of arrests in Palermo, Sicily, this week seems to have dragged up the truth.
N.B.: As far as I can remember, I've never had an unsolved face, but some were really difficult to do.
The four men only became suspects some three months after the killings of the taxi drivers, which to the embarrassment of the police had gone unsolved.
In all of those cases, offenders already in custody were linked by the DNA to crimes that until then had been unsolved.
