Rubisco has a surprisingly poor affinity for CO2, probably because it evolved in an atmosphere that had very high CO2 levels compared with the present atmo- sphere. In C3 plants the Km(CO2) of Rubisco ranges be- tween 15 and 25 mm. In cyanobacteria Rubisco has an even lower affinity for...
Keywords: CO2 emissions; China's heating industry; co-integration; scenario analysis; Monte Carlo Simulation 1. Introduction The vigorous growth of the Chinese economy has increasingly connected China to the global economy. Meanwhile, China's energy consumption has grown rapidly, making her the world...
Air circulation –Make sure cannabis gets a constant supply of fresh air so plants get the CO2 they need to grow, and keep air moving so there are no hot spots and leaves are always moving/rustling. Outdoors you may want to put up wind breaks if it gets too windy so plants aren’t ...
This is a great method to lower the pH in fish tanks, especially ones with aquatic plants, due to the control that comes with dosing carbon dioxide. However, CO2 injections can be costly over time and require additional equipment that some hobbyists might not be able to fit into their setu...
Well, the first rule in direct air capture is you have to move a lot of air. CO2 is very dilute in the air, so about 400 parts per million, which is 0.04% by volume. So you have to build the device that is a fan to move air through a contactor. In our case, we use ultra-...
The logistics and transport sector now contributes just over a third of global carbon dioxide (CO2) emissions3– a share that’s forecast to grow. But there are steps your business can take to help reduce the impact: Optimize space.Pack your products smartly into correctly-sized boxes – t...
John Cook wrote: "The key point is that all the models fail to predict recent warming without taking rising CO2 levels into account." Given enough "tunable parameters" that should come as no surprise. The modelers also assume that there is some positive feedback, there is no proof that ...
Current space-farming experiments examine different aspects of farming in microgravity (a term to describe an environment with little or no gravity). These experiments could be helpful in the related case of farming on the surface of the moon or Mars, which have significantly lower levels of grav...
In the updated model, pollution has been modeled as CO2 levels. This is different from the mix of pollutants used in the original model. The peak comes around 2090. [6] Intuitively, the order of forecast changes for the world economy, shown in Figure 8, seems right to me. Figure 8 ind...
Well, it’s no wonder your nitrate levels are so high. A water change is a great way to instantly lower the nitrate levels in your aquarium. You should also be mindful that nitrates can be present in tap water. This is a particular problem for those who draw water from wells. If you...