Additive Manufacturing Letters is a highly selective peer-reviewed journal focused on rapid time-to-first-decision for short-format manuscripts describing early stage, emerging and/or ground-breaking research in the field of additive manufacturing. The preferred length of manuscripts is …

总体来说，NC和AM算同一个档次，低于正刊（N，S）和nature大子刊，同一档的还有化学的J/A，science子刊SA，cell子刊joule，还有最近几年IF飙升的很高的EES（这个比较有争议），算是通常行内比较认可的顶刊。 至于AM和NC的比较，由于我方向偏应用，所以投的文章肯定是NC和SA都拒之后才会考虑AM。 而AM和NC的口碑一直是玄学，有的人觉得AM很水，有的人觉得NC又水又贵，这可能与编辑喜好以及小方向不同有关。 如果题主做的方向有学科交叉或者偏 …

Instead of AM and PM (in small caps), p.m. and a.m. -- with lowercase and periods -- are the preferred way to indicate time of day. According to the The Chicago Manual Style used by journalists. english.stackexchange.com/a/7774/31989 this answer cites the CMS and states that they say the periods are optional.

When emphasizing an exact or precise time, the abbreviations “a.m.” and “p.m.” are used. These two abbreviations stand for the Latin terms “ante meridiem” and “post meridiem,” which literally mean before noon and after noon. There are a few generally accepted ways to write these abbreviations in your writing.

But actually, the appreciated term A.M. stands for “ante meridiem,” which is a Latin term for “before noon.” It’s used to indicate that a time is in the morning, before 12:00 p.m. (noon). We also know it as the hour after midnight. But P.M., on the other hand, stands for “post meridiem,” which is Latin for “afternoon.”

以AM为首，形成了一个子刊体系： 一档子刊：advanced functional materials，advanced energy materials，advanced science，这里AFM，AEnM，AS高于或等于“传统明星期刊” (这个词感觉有些怪呢?!) nano letters，a…

2021年2月3日 · Use the abbreviations a.m. and p.m. to indicate exact time. Use a.m. to refer to a time of day before noon, and p.m. to speak of a time between noon and midnight. Use numerals or figures instead of words to denote time with a.m. and p.m. (eleven / 8 a.m.) in formal texts.

2021年2月5日 · Are AM and PM Capitalized? The abbreviations a.m. and p.m. are generally lowercased in running text, but they may also be capitalized (for example, in headings, signs, and notices). When lowercased, the letters of the abbreviations are usually followed by periods; if capitalized, periods are omitted.

2020年5月14日 · AM (ante meridiem) means “before noon,” so it refers to the morning. PM (post meridiem) means “after noon,” so it refers to any time after midday. When using a 12-hour clock, then, these terms clarify the time we have in mind (e.g., 12 AM is midnight, whereas 12 PM is midday). This is not necessary when using a 24-hour clock.

2019年10月3日 · The term we associate with the morning, a.m., is an abbreviation of the Latin phrase ante merīdiem meaning “before midday.” What does p.m. mean? P.m. is an abbreviation of post merīdiem, meaning—you guessed it—“after midday.” These two terms help keep ambiguity at bay in the 12-hour time system. What does m. mean?