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New Enzymatic Time-temperature Integrator (TTI) Using Porcine Esterase for Monitoring Food Quality
손병현,이연주,조혜진,홍광원 한국응용생명화학회 2014 Applied Biological Chemistry (Appl Biol Chem) Vol.57 No.3
An enzymatic time-temperature integrator (TTI) systembased on the reaction between porcine esterase and tripropionin,which causes a pH change, was developed. A pH decline in theesterase-based TTI system changed the color of the pH indicatorfrom blue to light green. After calculating the response rateconstant by measuring color changes in the TTI under differenttemperature conditions, an Arrhenius plot was prepared, andactivation energy was estimated. The activation energy of the TTImeasured at isothermal conditions (5, 10, 15, 20, and 30oC) was53.6–54.6 kJ/mol. In addition, the TTI endpoint could be adjustedby modifying the amount of esterase consumed to fit differentshelf lives of food. The results showed that the new esterase-basedTTI could be used to indicate the time-temperature history offood.
전문법칙의 예외를 규정한 형사소송법 제314조의 합헌성여부
손병현 한라대학교 2009 論文集 Vol.12 No.-
A statement is an oral or written assertion or nonverbal conduct of a person if it is intended by the person as an assertion Hearsay is an out-of-court statement made in court to prove the truth of the matter asserted In other words hearsay is evidence of a statement that was made other than by a witness while testifying at the hearing in question and that is offered to prove the truth of the matter stated Some statements are defined as hearsay but may nevertheless be admissible as evidence in court These statements relate to exceptions to the general rule on hearsay Some exceptions to the hearsay rule apply only when the declarant is unavailable for testimony at the trial or hearing It is the job of the judge in a court proceeding to determine whether evidence offered as proof is credible Three evidentiary rules help the judge make this determination Before being allowed to testify a witness generally must swear or affirm that his or her testimony will be truthful The witness must be personally present at the trial or proceeding in order to allow the judge to observe the testimony firsthand The witness is subject to cross-examination at the option of any party who did not call the witness to testify Out-of-court statements hinder the ability of the judge to probe testimony for inaccuracies caused by ambiguity insincerity faulty perception or erroneous memory Thus statements made out-of-court are perceived as untrustworthy Not all out-of-court statements or assertions are impermissible hearsay If an attorney wishes the judge to consider the fact that a certain statement was made but not the truthfulness of that statement the statement is not hearsay and may be admitted as evidence The Constitutional Court ruled article 314 of the Criminal Procedure Act is constitutional Even if the probative value of evidence is recognized the question of credibility of that evidence is left to the free discretion of a judge and the defendant may freely impeach its credibility Therefore it cannot be said that the article 314 infringes on the right to equality and the right to a fair trial or violate due process or the presumption of innocence