Four neolignans, (7S,8S)-dihydrodehydrodiconiferyl alcohol 9-O-β-D-glucopyranoside (1), (7S,8S)-dihydrodehydrodiconiferyl alcohol 9′-O-β-D-glucopyranoside (2), (7S,8R)-5-methoxydihydrodehydrodiconiferyl alcohol 4-O-β-D-glucopyranoside (3), and (7S,8R)-5-methoxydihydrodehydrodiconiferyl alcohol 9′-O-β-D-glucopyranoside (4)  and five flavonol glycosides, kaempferol-3-O-β-D-glucopyranoside (5), kaempferol 3-O-rutinoside (6), kaempferol 3-O-α-L-rhamnopyranosyl (1→6)-β-D-galactopyranoside (7), kaempferol 3-O-β-D-galactopyranoside (8), and quercetin 3-O-β-D-glucopyranoside (9) were isolated from the methanol extract of Viburnum lutescens Blume leaves. Their chemical structures were elucidated by 1D- and 2D-NMR spectra and comparison with those reported in the literature. Compounds 1, 2, and 4 were reported from Viburnum genus for the first time.

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Nhiều năm trước, nhà khoa học Vương Quân Hoàng đã quan sát hiện tượng bệnh nhân ở Hà Nội bị bệnh nặng hoặc trọng thương có xu hướng từ bỏ việc điều trị y tế. Hành động này dẫn tới vô số hậu quả trầm trọng cho tình trạng của bệnh nhân, thậm chí là tử vong. Nhà khoa học gọi đây là hành động “gần tự sát”. Ông trăn trở “tại sao người bệnh lại từ bỏ chữa trị, có phải họ không sợ chết”.

Mindspongeconomics (mindspongecon) is a new economic theory developed by Dr. Van Quy Khuc, a lecturer at VNU University of Economics and Business, Vietnam National University. Despite the fact that the study is still in progress, it has attracted the interest of several scholars from around the globe.

Several years ago, scientist Vuong Quan Hoang found that patients in poor healthconditions in Hanoi were left with only two options, both of which all resulted in badoutcomes. Based on the subjective reasoning, the patient chose between draining familyfinancial resources in the hope of being successfully treated, and discontinuing medicalcare and awaiting inevitable death. The latter behavior pattern bears some similarity tosuicide due to its catastrophic impacts on the patient's health, possibly leading to death, soit is called the “near-suicide phenomenon” “Why do patients opt out of treatment? Arethey not terrified of death?” the scientist kept pondering over these questions.