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The potential benefits of creating intelligence are huge, Oil, as the world’s main energy material, is an important energy that relates to the national economy and people’s livelihood. In recent years, with the rapid development of national economy and society, the demand for energy has also increased. In this context, deepwater energy has become the focus of attention. In this paper, the research results of and the challenges faced by deepwater drilling fluid at home and abroad in recent years are summarized.

In this paper, a BP neural network model with 5-9-6 structure is constructed according to various fault gases and different fault types ofWater-based drilling fluid and synthetic-based drilling fluid. While there are few studies relating to oil-based drilling fluid, which is attributed to the potential toxicity of conventional oil-based drilling fluid to the marine environment. However, oil-based drilling fluid is excellent in protecting the borehole stability. To this end, an environmentally friendly deepwater oil-based drilling fluid was developed based on the traditional oil-based drilling fluid. With the advantages such as good borehole stability and good wettability, this drilling fluid will not pollute the marine environment, is resistant to high temperature, and protects hydrocarbon reservoir, which is of great significance for rational exploration and development of deep-sea resources.

Surface-active Polymer is a novel multifunctional active polymer for chemical flooding in mature oilfield, and the mechanism of enhancing oil recovery by Surface-active Polymer flooding is to be further studied. Performance of enlarging swept volume for enhancing oil recovery by Surface-active Polymer flooding has been evaluated in this paper. The effect and contribution rate of mobility control of Surface-active Polymer flooding for enhancing oil recovery were tested firstly, and then microscopic experiments on enlarging swept volume based on microetching models have been carried out, and macroscopic evaluation of enlarging swept volume based on heterogeneous models with cores grouped in parallel was carried out. Mobility control effect and plugging by emulsifying make Surface-active Polymer have significant performance of enlarging swept volume. Enlarging swept volume both on the macroscopic and the microscopic is the basic principle of Surface-active Polymer flooding for enhancing oil recovery. [ABSTRACT FROM AUTHOR]

To explore the differences in the main nutritional composition of 23 kinds of common edible fungi in the market, the moisture, ash, protein, fat, dietary fiber, carbohydrates, polysaccharides, and energy were analyzed using national standard methods. The results showed that the 23 kinds of edible fungi varied greatly in nutritional composition. Based on dry weight, the moisture content was 6.9∼15.5 g/100 g, the ash content ranged from 1.3 to 10.1 g/100 g, the protein content ranged from 8.5 to 36.9 g/100 g, the fat content was 0.5∼3.9 g/100 g, the dietary fiber content was between 14.4∼70.2 g/100 g, the carbohydrate content is 0.5∼37.3 g/100 g, the polysaccharide content was 2.1∼8.3 g/100 g, and the energy is about 751∼1322 100 g/kJ. All the 23 kinds of edible fungi can be regarded as high-protein low-fat foods, which have their own advantages in terms of nutritional value. This study provides reference for people to use edible fungi in a more scientific and reasonable way. [ABSTRACT FROM AUTHOR]

As a high-end tourism activity advocating back to nature and protecting the nature, ecotourism has won increasing attention in recent years home and abroad. Being endowed with outstanding topographical and natural landscape resources, Sichuan has been a major ecotourism province in China. Particularly, western Sichuan mountains is more scarcely populated area with great topographical fluctuations, thus it is more suitable for developing ecotourism activities than eastern Sichuan. Based on previous researches and statistical analysis, this paper reviewed the overall situation of ecotourism landscape resources in western Sichuan mountains, including its geomorphological landforms, hydrographic landscapes, biological landscapes, meteorological and climatic landscapes. More importantly, in view of the blank area found in the statistical analysis, the paper analyzed the shrub landscapes on the basis of fi eld investigation, to support further research on the development and utilization of local ecotourism resources. [ABSTRACT FROM AUTHOR]

Shrubs is one of the major types of natural terrestrial ecosystems. China is one of the largest shrubs distribution countries in the world, and the mountainous area of west Sichuan in the southwest region is one of the key distribution sections. Nevertheless, the basic data of shrubs has long been unexplored. This study was designed to document and map the landscape pattern of the shrubs by using land use data with the help of field survey data and well-established landscape metrics. The study area was classified into 7 first-class land cover types and 19 second-class shrubs types. The results showed that grassland, forest, and shrubs landscapes are 3 dominant types. Shrubs landscape showed high quality, fragmentation, aggregation and diversity, richness of resources. Based on these, this paper also presented an outspread discussion on the tourism aesthetic value of shrubs. The conclusion is that the aesthetic value and tourism resources value of shrubs are both considerable, especially for Rhododendron L. shrubs. And ecotourism is suitable for shrubs' exploration and environmental education. Analyzing distribution of shrubs landscape and discussing its tourism aesthetic value can provide a reference and idea for future research. [ABSTRACT FROM AUTHOR]

The design of admirable hydrogel networks is of both practical and fundamental importance for diverse applications of hydrogels. Herein a general strategy of acid-assisted training is designed to enable multiple improvements of conventional poly (sodium acrylate) networks for hydrogels. Hydrophobic homogeneous crosslinked poly (sodium acrylate) hydrogels are prepared to verify the strategy. The multiple improvements of poly (sodium acrylate) networks are simply achieved by immersing the hydrogel networks into 4 M H 2 SO 4 solutions. The introduced acids would induce transformation of poly (sodium acrylate) into poly (acrylic acid) at hydrogel surface, which constructs dynamic hydrogen bonding interactions to tighten the network. The acid-containing poly (sodium acrylate) hydrogels newly generate anti-swelling and self-healing performance, and show mechanical improvement. The internal poly (sodium acrylate) of the pristine acid-containing hydrogels is further fully transformed via acid-infiltration after following cyclic stretch/release training to significantly improve the mechanical performance. The Young's modulus, stress, and toughness of the fully-trained hydrogels are 187.6 times, 35.6 times, and 5.4 times enhanced, respectively. The polymeric networks retain isotropic in fully-trained hydrogels to ensure superior stretchability of 8.6. The acid-assisted training performance of the hydrogels can be reversibly recovered by NaOH neutralization. The acid-assisted training strategy here is general for poly (sodium acrylate) hydrogels., (© 2024 Wiley-VCH GmbH.)