Detection of Methoxymethanol as a Photochemistry Product of Condensed Methanol

We report the identification of methoxymethanol (CH3OCH2OH) as a photochemistry product of condensed methanol (CH3OH) based on temperature-programmed desorption studies conducted following photon irradiation at energies below the ionization threshold (9.8 eV) of condensed methanol. The first detection of methoxymethanol in the interstellar medium was reported in 2017 based on data from Bands 6 and 7 from the Atacama Large Millimeter/submillimeter Array (ALMA). The cosmic synthesis of “complex” organic molecules such as methyl formate (HCOOCH3), dimethyl ether (CH3OCH3), acetic acid (CH3COOH), ethylene glycol (HOCH2CH2OH), and glycolaldehyde (HOCH2CHO) has been attributed to UV photolysis of condensed methanol found in interstellar ices. Experiments conducted in 1995 demonstrated that electron-induced radiolysis of methanol cosmic ice analogues yields methoxymethanol. In three recent publications (2016, 2017, and 2018), methoxymethanol was considered as a potential tracer for reactions induced by secondary electrons resulting from the interaction of cosmic rays with interstellar ices. However, the results presented in this study suggest that methoxymethanol can be formed from both radiation chemistry and photochemistry of condensed methanol

Condensed-Phase Photochemistry in the Absence of Radiation Chemistry

We report post-irradiation photochemistry studies of condensed ammonia using photons of energies below condensed ammonia’s ionization threshold of ~ 9 eV. Hydrazine (N2H4), diazene (also known as diimide and diimine) (N2H2), triazane (N3H5), and one or more isomers of N3H3 are detected as photochemistry products during temperature-programmed desorption. Product yields increase monotonically with (1) photon fluence and (2) film thickness. In the studies reported herein, the energies of photons responsible for product formation are constrained to less than 7.4 eV. Previous post-irradiation photochemistry studies of condensed ammonia employed photons sufficiently energetic to ionize condensed ammonia and initiate radiation chemistry. Such studies typically involve ion-molecule reactions and electron-induced reactions in addition to photochemistry. Although photochemistry is cited as a dominant mechanism for the synthesis of prebiotic molecules in interstellar ices, to the best of our knowledge, ours is one of the first astrochemically-relevant studies that has found unambiguous evidence for condensed-phase chemical synthesis induced by photons in the absence of ionization

The impact of the teaching of rthics in a Medical and Allied Health Sciences curriculum in International Islamic University Malaysia

Background: The approach to the teaching of ethics and professionalism in the Faculty of Medicine (FM) of International Islamic University Malaysia (IIUM) is unique. A specifically designed package is incorporated designated as the Islamic Input into the Medical Programme (IIMP). The IIMP spans over the entire 5 years of the medical programme. In the Faculty of Allied Health Sciences (FAHS) students do not go through a similar Islamic Input module but exposed to ethical issues specific to health sciences. Method: The aim of this study is to assess the impact of the teaching of ethics through the IIMP. A cross-sectional study was conducted in medical and allied health sciences faculties of IIUM. In total 259 students volunteered and were allocated to 4 groups, Years 2 and 5 students of FM and Years 2 and 4 of FAHS. A set of questionnaire consisting of 20 vignettes related to medical ethics was distributed to all students. An independent t-test was used to compare the mean total scores between the groups. Results: A significant difference (p < 0.05) was seen between the mean total scores for the Year 2 and Year 5 students of FM; Year 2 students of FM and Year 2 students of FAHS; and between the Year 5 students of FM and Year 4 students of FAHS. Also there was significant difference between the two medical and allied health sciences groups as a whole. Discussion: This study suggests that the IIMP of the IIUM has a positive impact on the medical students when dealing with ethical issues. The Year 5 medical students were expected to have obtained a higher mean total score. The probable reason for the lower mean total score include the teaching-learning approach utilized which is mainly lecture with minimal small group approach. Also the allocation of marks for medical ethics in summative assessment in the IIUM medical curriculum is minimal compared to the core medical subjects which would have some influence on the weight given by students. Conclusion: The Medical Faculty of IIUM believes that the approach to the teaching of medical ethics by incorporating the Islamic Input module is effective, practical and relevant. However the teaching-learning method and the assessment will have to be re-addressed to achieve greater impact

The impact of the teaching of ethics in a medical and allied health sciences curriculum in International Islamic University Malaysia

Background: The approach to the teaching of ethics and professionalism in the Faculty of Medicine (FM) of International Islamic University Malaysia (IIUM) is unique. A specifically designed package is incorporated designated as the Islamic Input into the Medical Programme (IIMP). The IIMP spans over the entire 5 years of the medical programme. In the Faculty of Allied Health Sciences (FAHS) students do not go through a similar Islamic Input module but exposed to ethical issues specific to health sciences. Method: The aim of this study is to assess the impact of the teaching of ethics through the IIMP. A cross-sectional study was conducted in medical and allied health sciences faculties of IIUM. In total 259 students volunteered and were allocated to 4 groups, Years 2 and 5 students of FM and Years 2 and 4 of FAHS. A set of questionnaire consisting of 20 vignettes related to medical ethics was distributed to all students. An independent t-test was used to compare the mean total scores between the groups. Results: A significant difference (p < 0.05) was seen between the mean total scores for the Year 2 and Year 5 students of FM; Year 2 students of FM and Year 2 students of FAHS; and between the Year 5 students of FM and Year 4 students of FAHS. Also there was significant difference between the two medical and allied health sciences groups as a whole. Discussion: This study suggests that the IIMP of the IIUM has a positive impact on the medical students when dealing with ethical issues. The Year 5 medical students were expected to have obtained a higher mean total score. The probable reason for the lower mean total score include the teaching-learning approach utilized which is mainly lecture with minimal small group approach. Also the allocation of marks for medical ethics in summative assessment in the IIUM medical curriculum is minimal compared to the core medical subjects which would have some influence on the weight given by students. Conclusion: The Medical Faculty of IIUM believes that the approach to the teaching of medical ethics by incorporating the Islamic Input module is effective, practical and relevant. However the teaching-learning method and the assessment will have to be re-addressed to achieve greater impact