A novel monomeric amine sodium montmorillonite swelling inhibitor: N 1 , 2 -ditetradecy- -tetrakis (2-hydroxyethyl) ethane-1,2-diaminium bromide was obtained from diethanolamine, 1-bromotetradecane, and 1, 2-dibromoethane. characterized by means of Fourier transform infrared, H NMR spectroscopy, elemental analysis, linear tests, particle size distribution X-ray diffraction, thermogravimetric. Linear tests showed that the height in 1.0 wt% solution only 2.0 mm after 16 h (fresh water 5.0 mm)....

Protecting large-scale heritage settlements from being damaged by fires has become increasingly crucial in developing areas that lack adequate legislation, emergency planning, and particularly efficient techniques. This study provides a systematic assessment methodology for evaluating the accessibility of specific fire-fighting techniques to mitigate fire hazards historical towns examines how integration municipal local services works. Specifically, this paper trucks, overall protection...

Lauded for its capacity to curtail building energy consumption and enhance environmental performance compared traditional mineral-based materials, wood has gained substantial traction in the construction sector. Timber construction, which is a focal point of growing interest both industry academia, warrants reassessment historical trajectory future prospects. This study examines publications on timber from 1990 2022 analyze growth path, shifting hotspots, potential research directions this...

In this study, a novel cationic cyclodextrin polymer was prepared by the polymerization reaction between allyl‐β‐cyclodextrin (A‐β‐CD) and acrylamide (AM), acrylic acid (AA), diallyl benzyl propyl ammonium chloride (DABPAC) (A‐β‐CD/AM/AA/DABPAC). The β‐cyclodextrin structurally characterized using FTIR 1 H NMR. On bases of XRD SEM analyses, possibility interaction clay surfaces suggested. layer formed around apparently performed as double protective preventing swelling its molecular migration.

In recent years, the development trend of artificial intelligence is getting better and better. It has been widely used not only in fields big data analysis, automobile automatic driving, intelligent robot face recognition, but also various oil gas industry. Oil production prediction an important part reservoir engineering, which very for future strata, can give developers some suggestions. At present, methods are mainly traditional means such as numerical simulation history matching. With...

The NORINDIA project sheds light on how climate change could affect monsoons, droughts, and glaciers in northern India.

The disadvantages of the current algorithms for underwater acoustic Ad hoc networks were analyzed. After that, an energy and time efficiency based topology control algorithm was proposed. is controlled by a single-hop transmission cost index defined in algorithm. describes consumption, communication delay signal attenuation networks. simulation shows that new has better performance on average node degree, end-to-end efficiency.

Underwater vigilance and detection technology has been paid more attention in recent years. The configuration of underwater acoustical sensor network was analyzed designed, three different frames were presented. Considering some factors such as economic cost, large number experiments is impossible to be used study sonar detection. Then the computer simulation becomes preferred method. software system for every sub-module assigned expected function. Some main sub-modules analyzed. Simulation...

This new high-rise building fire fighting robot is a multifunctional cabin, which integrated detection of fire, fighting, person search and rescue, etc. The connected with helicopter by cable transported over high helicopter. paper presents the system structure, position attitude control strategy, including hardware software, atwo-layer uses PC as upper machine, MCU lower computer multi-task software based on Visual C++ class structure. experiments demonstrate reliability all performance...

With increasing application of machine learning (ML) in hydrometeorology, we face the urge to demystify black–box ML because it usually does not provide physically interpretable information users. Here, demonstrate multiple post–hoc interpretation methods evaluate feature effects for hydrometeorological prediction. These were integrated and applied soil moisture (SM) as an example, random forest was used establish a predication model based on FLUXNET site Haibei, China. From different views...

The rapidly accelerating economic development of newly industrialised countries (NICs) has created far-reaching environmental problems. new construction numerous infrastructures and buildings, particularly in the architecture, engineering, (AEC) industry, led to an exponential increase demand for raw materials energy, which is leading depletion natural resources. approach treating these buildings at end life also raised concerns worldwide. Transforming current linear model into a circular...