Web一,导入模块及读取csv数据 二, 数据清洗 – 缺失文本填充‘缺失数据’,缺失数字填充0 三, 各城市总知乎人数及密度TOP20 柱状图 四, 各高校关注量与粉丝数 散点图. 一,导入模块及读 … WebDec 1, 1998 · In the old days waste disposal from ships was never a problem; seafarers just followed the example set by the shore-based industry and dumped everything into the sea. ... London, 1973 (MARPOL 1973), imposed a total prohibition of discharge of any oil or oily mixture from oil tankers, including oily water from the pump room bilges, within 50 ...
Marine Pollution, MARPOL, and Observers
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WebAug 19, 2024 · DataFrame-dropna () function The dropna () function is used to remove missing values. Syntax: DataFrame.dropna (self, axis=0, how='any', thresh=None, subset=None, inplace=False) Parameters: Returns: DataFrame DataFrame with NA entries dropped from it. Example: Download the Pandas DataFrame Notebooks from here. … WebThe standards of MARPOL (the International Convention for the Prevention of Pollution from Ships) have in turn been adopted by most flag and port States and subsequently enacted into national legislation and regulation. ... Cooking Oil: Waste cooking oil is typically strained to remove debris and then collected and landed ashore for recycling ... WebRegulations 16.1 – 16.4 cover onboard incineration in general and hence is potentially applicable to all ships whereas regulations 16.6 – 16.9 are specific only to incinerators installed on ships constructed on or after 1 January 2000 or to units installed on existing ships on or after that date. Regulation 16.1 requires that incineration ... people born on february 28 1965