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Topic Review
Biography
Topic Review
Roles, Formation Processes and Investigation Methods of Rhizosheath
The rhizosheath, defined as the complex of root hair, exudates and soil that strongly adheres to plant roots, is a promising root adaptive trait in facing conditions of water and nutrient deficits, as well as acidic soil. Several beneficial ecological functions are attributed to the rhizosheath, such as enhancing water and nutrient uptake; protecting from dehydration, heat and acid stresses; and stimulating microbial activities. It has been described in several Angiosperm species, including crops grown in severe habitats.
163
19 Jan 2024
Topic Review
Rolling Circle Amplification
Rolling circle amplification (RCA) is an isothermal enzymatic process in which a short nucleic acid primer is amplified to form a long single-stranded nucleic acid using a circular template and special nucleic acid polymerases. Furthermore, this approach can be further engineered into a device for point-of-need monitoring of environmental pollutants.
6.8K
08 Oct 2021
Topic Review
ROS and Antioxidants in Halophytes
Reactive oxygen species (ROS) are excited or partially reduced forms of atmospheric oxygen, which are continuously produced during aerobic metabolism like many physiochemical processes operating throughout seed life. Previously, it was believed that ROS are merely cytotoxic molecules, however, now it has been established that they perform numerous beneficial functions in plants including many critical roles in seed physiology. ROS facilitate seed germination via cell wall loosening, endosperm weakening, signaling, and decreasing abscisic acid (ABA) levels. Most of the existing knowledge about ROS homeostasis and functions is based on the seeds of common plants or model ones.
419
30 Aug 2023
Topic Review
Rotating Packed Beds
In this study, a comprehensive review was conducted of the process intensification equipment used for gas absorption processes, which are known as rotating packed beds (RPB) or HiGee contactors. Using centrifugal acceleration in RPBs intensifies the MT coefficient, and this leads to a reduction in the packing volume and energy consumption in comparison with packed beds. The gas velocity and flow area change radially in RPBs; therefore, MT coefficients change from point to point in contactors, but there is no general theory for this, and the prediction of MT coefficients in RPBs is theoretically complicated.
3.3K
11 Aug 2021
Biography
Roy Spencer
Roy Warren Spencer (born December 20, 1955)[1] is a meteorologist,[2] a principal research scientist at the University of Alabama in Huntsville, and the U.S. Science Team leader for the Advanced Microwave Scanning Radiometer (AMSR-E) on NASA's Aqua satellite.[3][4] He has served as senior scientist for climate studies at NASA's Marshall Space Flight Center.[3][4] He is known for his satellite-b
1.1K
06 Dec 2022
Topic Review
Runaway Climate Change
Runaway climate change or runaway global warming is hypothesized to follow a tipping point in the climate system, after accumulated climate change initiates a reinforcing positive feedback. This rapid acceleration in climate change may lead to potentially irreversible damage to the climate system, making timely mitigation efforts unfeasible. This is thought to cause the climate to rapidly change until it reaches a new stable condition. These phrases may be used with reference to concerns about rapid global warming. Some astronomers use the expression runaway greenhouse effect to describe a situation where the climate deviates catastrophically and permanently from the original state—as happened on Venus. Although these terms are rarely used in the peer-reviewed climatological literature, that literature does use the similar phrase "runaway greenhouse effect", which refers specifically to climate changes that cause a planetary body's water to boil off.
2.0K
01 Nov 2022
Topic Review
Rural Development of River Tourism Resources
Rivers have abundant freshwater resources, their general drainage areas are extensive, and alluvial plains are fertile, nourishing and enriching the ecology. Human beings have rich experience and a long history of using the advantages and foundation of river water resources to develop fishing, animal husbandry, farming, and other industries to maintain their needs, build settlements, develop cities, and create a safe and sustainable living and living environment. It can be seen that safe and stable water resources will help improve the development of human beings and villages.
734
12 Jul 2022
Topic Review
Russian Arctic Permafrost Degradation Effects Public Life
There are more than 200 Siberian anthrax cattle burial grounds in the Russian permafrost regions. Permafrost degradation poses the risks of thawing of frozen carcasses of the infected animals and propagation of infectious diseases. Permafrost degradation leads to infiltration of toxic waste in the environment. Such waste contains mercury, which migrates into the rivers and forms methylmercury (MeHg) in fish. Other risks associated with permafrost degradation include damage to the existing social infrastructure (housing, health-care facilities, roads, etc.).
358
24 Jun 2022
Topic Review
Russian Arctic Sustainable Development
For the development and utilization of the Arctic region, Russia proposed a plan many years ago, and in 2020, it proposed a new “Foundations of the Russian Federation State Policy in the Arctic for the Period up to 2035”, which reaffirmed the importance of Arctic work in principle. The focus on development further demonstrates the reality that Russia regards the development of the Arctic as an important boost to national rejuvenation. The development of the Arctic requires a lot of funds, manpower, and the joint efforts of the international community. The joint construction of the Arctic region seems to be an excellent platform for building a community with a shared future for mankind and for opening up a new level of international cooperation. The manpower, material resources, and wisdom required for the construction of the Arctic have greatly exceeded that of a country or even the entire Arctic Council.
370
25 Jul 2023
Topic Review
Safe Reuse of Wastewater Irrigation
Due to climate change, two-thirds of mankind will face water scarcity by 2025, while by 2050, global food production must increase by at least 50% to feed 9 billion people. To overcome water scarcity, 15 million m3/day of untreated wastewater is used globally for crop irrigation, polluting the soil with pathogens, heavy metals and excess salts. Since 10% of the global population consumes food from crops irrigated with wastewater, pathogens transmitted through the food chain cause diseases especially in young children and women. We emphasize that irrigation offers real perspectives for large-scale recovery of wastewater, helping to reduce the deficit and conserve water resources, and increasing food safety, with the express mention that investments must be made in wastewater treatment plants and wastewater must be properly treated before recovery, to limit the risks on human health and the environment.
641
23 Nov 2020
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