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Article
Open AccessInvestigating the applicability of novel hydrate dissociation inhibitors in oilwell cement through molecular simulations
In the field of hydrate formation cementing, the method of develo** the low hydration exothermic cement systems cannot effectively solve the problem of hydrate dissociation caused by the hydration heat relea...
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Article
Carbon Dots as “On–Off–On” Fluorescence Sensors for Selective and Consecutive Detection of 4-Nitrophenol and Cerium(IV) in Water Samples
An “on–off–on” fluorescence sensor was designed for rapidly and consecutively detecting 4-nitrophenol and cerium(IV) without the use of any labeling materials. The yellow carbon dots were synthesized by a simp...
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Article
Open AccessAn experimental study of the correlation between P-wave velocity and the physical properties of weakly cemented formations
Deep water and shallow layers mostly feature weakly cemented formations, with complex geological structures, geological looseness, susceptibility to collapse. In order to obtain information on weakly cemented ...
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Article
Adaptability of Different Shear Failure Criteria in Shear Failure Evaluation of Cement Sheaths
The problems of lack of comparison and unclear application conditions for the shear failure criterion of cement sheaths are investigated. Based on the different shear failure criterion parameters calculated fr...
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Article
Nitration of chlorobenzene by ultrasonic-assisted synthesized sulfated ZrO2 catalyst with NO2
Different solid superacid sulfated zirconium dioxide (SO42−/ZrO2) samples were successfully prepared by conventional and ultrasonic-assisted chemical precipitation process, and then, they were characterized by X-...
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Article
Establishment and Application of T-H-M Coupling Model of Casing-Cement Ring-Formation in Thermal Recovery Wells
With the gradual increase of thick oil extraction in petroleum resources around the world, the well wall sealing integrity problem caused by thick oil extraction is becoming more and more prominent. In order t...
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Article
Open AccessHigh-entropy alloy nanopatterns by prescribed metallization of DNA origami templates
High-entropy multimetallic nanopatterns with controlled morphology, composition and uniformity hold great potential for develo** nanoelectronics, nanophotonics and catalysis. Nevertheless, the lack of genera...
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Article
Mechanism of Cement Stone Porosity and Permeability Structures for Downhole Fluid Packing
Cement ring is the main barrier for downhole fluid sealing. The sealing properties of the cement ring include two aspects: sealing off the cement ring itself and the interface. Numerous studies have been condu...
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Article
Epoxy Resin-Based Cementing Fluid Produces a Low Elastic Modulus Cementing Fluid System and Enhances the Cement–Formation Interface
Epoxy resin has better mechanical properties than Portland cement, and epoxy resin can easily seep into and stabilize the mud cake, which is more effective in improving the cement–formation bonding strength. I...
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Article
Comparative Genome-Wide Analysis and Expression Profiling of Histone Acetyltransferases and Histone Deacetylases Involved in the Response to Drought in Wheat
Histone acetyltransferases (HATs) and histone deacetylases (HDACs) contribute to plant growth, development, and stress responses. A number of HAT and HDAC genes have been identified in several plants. However, wh...
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Article
Optimization of Lithium Metaborate Fusion and Post-ultrasonic Extraction for Multi-element Determination in Graphite by ICP-AES
Existing methods can not achieve rapid mass decomposition and multi-element analysis of graphite ore samples. In this study, it is found that molten lithium metaborate can destroy the structure of graphite, ca...
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Article
Open AccessMagnetothermal nanoparticle technology alleviates parkinsonian-like symptoms in mice
Deep brain stimulation (DBS) has long been used to alleviate symptoms in patients suffering from psychiatric and neurological disorders through stereotactically implanted electrodes that deliver current to sub...
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Chapter and Conference Paper
Densely End Face Detection Network for Counting Bundled Steel Bars Based on YoloV5
Steel bars are important materials in infrastructure construction. It is necessary to know the number of steel bars that are bundled in production, storing, and trading, while manually counting bundled steel ...
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Reference Work Entry In depth
Selected Works of Natural History in Ancient China
Natural history is closely linked to the livelihood of the people. Development level of natural history in a society can be inferred from the colorfulness in its daily language. Highly developed natural histor...
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Article
Correction to: The effect of fornix deep brain stimulation in brain diseases
After publication of the original article it came to the authors’ attention that there was an error under the subheading Traumatic Brain Injury (TBI) as well as Table 1.
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Article
Open AccessThe effect of fornix deep brain stimulation in brain diseases
Deep brain stimulation is used to alleviate symptoms of neurological and psychiatric disorders including Parkinson’s disease, epilepsy, and obsessive–compulsive-disorder. Electrically stimulating limbic struct...
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Article
Construction of pH-Triggered DNA Hydrogels Based on Hybridization Chain Reactions
As a novel type of bio-functional material, DNA hydrogels have attracted more and more attention due to their successful applications in 3D cell culturing and tissue engineering for the designable and programm...
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Article
Tailoring DNA Self-assembly to Build Hydrogels
DNA hydrogels are crosslinked polymeric networks in which DNA is used as the backbone or the crosslinker. These hydrogels are novel biofunctional materials that possess the biological character of DNA and the ...
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Chapter
Tailoring DNA self-assembly to build hydrogels
DNA hydrogels are crosslinked polymeric networks in which DNA is used as the backbone or the crosslinker. These hydrogels are novel biofunctional materials that possess the biological character of DNA and the ...
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Article
Open AccessProgramming DNA origami patterning with non-canonical DNA-based metallization reactions
The inherent specificity of DNA sequence hybridization has been extensively exploited to develop bioengineering applications. Nevertheless, the structural potential of DNA has been far less explored for creati...
