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New model reveals possibility of pumping antibiotics into bacteria（图）
New model possibility pumping antibiotics bacteria
2017/11/23
Researchers in the University of Wisconsin–Madison Department of Biochemistry have discovered that a cellular pump known to move drugs like antibiotics out of E. coli bacteria has the potential to bri...
Pumping human milk in the early postpartum period: its impact on long-term practices for feeding at the breast and exclusively feeding human milk in a longitudinal survey cohort
human milk infant feeding lactation milk expression pumping
2018/11/29
Background: Most American mothers who feed human milk (HM) now use pumps to produce some of the HM they feed. Pumping is nationally recommended, but associations between pumping and HM-feeding duratio...
An Approach to the Design Calculation of Sucker Rod Pumping Systems in Coalbed Methane Wells
sucker rod pump kinematic analysis polished rod load
2011/8/3
The existing design of the pumping systems mainly focuses on the approximate computational formulae and procedures, which are developed based on the analytic approaches of conventional oil/gas fields....
基于不可行度的机压树状管网退火遗传算法优化（Optimization of Pumping Tree Pipe Network by Using Annealing-genetic Algorithms Based on Infeasible Degree）
树状管网 遗传算法 模拟退火
2009/9/25
规定管网中每一管段最多只能由两种管径的管道组成，提出一种以管网年费用为目标函数，以水泵扬程、管长和标准管径为决策变量的机压树状输水管网优化数学模型。定义种群中个体的不可行度函数，采用基于解的不可行度退火算法处理约束条件。应用模拟退火算法，对解的不可行度进行局部优化，使其逐步逼近可行解。将遗传算法全局优化和模拟退火的良好局部搜索能力有机结合，构造出一种退火遗传算法用于机压树状管网优化设计。仿真结果表...