conventional oil breaks down faster than synthetic oil. Experts recommend changing your conventional oilevery 5,000 to 7,000 miles. Since you will need more oil changes over time, this may offset the cost savings of a conventional oil change. ...
However, oil change discount offers still have their own limitations. To start with, not all oil retailers offer these coupons. Only renowned companies or retailers do so. Therefore, one is normally forced to look for one that offers the coupons. On the other hand, the oil change pricing va...
When it’s time for your car to get an oil change, if you find yourself wondering what the difference between synthetic and conventional oil is, you’re not alone. It’s important to note that not allmotor oilsare the same. Some are designed for high-performance engines or certain typ...
gathered in 5-year intervals, over 25 years of NT implementation, via Scopus and Google Scholar until 21 November, 2008. When reading the output of a meta-analysis, a response may be regarded as positive if the response ratio (R) and the lower confidence interval (CI) are higher than 1...
The results show large uncertainties in the future costs of supplying bitumen from Canadian oil sands deposits, with a 90% confidence interval of $7–12 in 2030, and $6–15 in 2060 (2005 US$). The influence of each parameter on the supply costs is examined, with the minimum supply cost...
Accordingly, the sample size is calculated as 120 for a 90% confidence interval and 7.5% error margin. In the formula, n is sample size, N is number of farmers, σ2px is the variance of the ratio, and p is the ratio of hazelnut producers (p = 0.05 to reach the maximum sample...
No tillage (NT) is often presented as a means to grow crops with positive environmental externalities, such as enhanced carbon sequestration, improved soil quality, reduced soil erosion, and increased biodiversity. However, whether NT systems are as prod
The secondary end points were radiological tumour response, time-to-tumour progression (TTP: interval between randomisation and radiological tumour progression), impact on PS and liver function, number of treatments, duration of in-hospital stay and need for other types of treatment of residual/...
Table 7. Lethal concentration (LC50) with a 95% confidence interval (CI) of synergistic combinations after 24 h and 48 h. 2.4. Selectivity Index The LC50 and SI for each synergistic ratio are presented in Table 8. Most of the ratios demonstrated a low toxicity (LC50 = 500–999 µg...
Change ScenariosAgri-Environmental Systems for the Future: Meeting the 2050 Emissions TargetsAgricultural Management for Climate Change Adaptation, Greenhouse Gas Mitigation, and Agricultural ProductivityAgricultural Non-point Source Pollution Control: From Croplands Management to Water Quality Improvement...