The existing trade-off between flood control and water conservation measured by limited level (FLWL) during season hinders multi-reservoir system from realizing comprehensive benefits. To overcome this barrier, we reasonably allocated the complementary prevention storage based on aggregation-decomposition technique, theoretically deduced mathematical formula of power generation variation simplified cascade reservoir operation model, dynamically operated levels considering inflow forecasting...

Polyacrylonitrile-based hydrogels with excellent ionic conductivity and anti-freezing properties were developed<italic>via</italic>a one-step aqueous route used as wearable sensors.

The hydrochloric acid–acetone-ultrasonication method provides a much faster and more accurate measurement of epoxide values than the corresponding standing method.

Trachelospermum jasminoides (Lindl.) Lem. is a well-known herb with important medicinal and economic values. It widely used in the treatment of inflammations China. As global climate change intensifies, ecological niche plants has correspondingly shifted. Therefore, understanding distribution suitable habitats for T. under different conditions great significance its cultivation, introduction, conservation. This research utilizes MaxEnt model combination Geographic Information System (ArcGIS)...

Spodoptera exigua is a pest of considerable economic importance; however, detailed research into its ecological adaptability in newly invaded habitats limited. This performed comprehensive analysis the life history characteristics S. under varying temperature, photoperiod, and humidity conditions. A total 264 studies that met inclusion criteria were included analysis, data examined using random-effects model, fixed-effects meta-regression techniques. The findings reveal when temperatures...

Introduction Hippophae rhamnoides, a temperate species with transcontinental distribution spanning Eurasia, demonstrates preferential establishment in water-limited ecosystems (arid/semi-arid zones), particularly occupying high-elevation niches skeletal soils and high solar flux. This ecologically significant plant, prized for dual ecological provisioning economic services, shows biogeographic concentration China’s northern desertification belts, northwestern Loess Plateau, southwestern...

In this paper, two novel fully renewable internal emulsifiers have been successfully synthesized from epoxidized soybean oil and natural acids (adipic pimelic acid) by a solvent-free self-catalytic method. It is found that the show similar chemical structure functions with typical petroleum based (dimethylol butanoic acid dimethylol propionic acid), in which hydroxyl groups act as cross-linking carboxylic provide ionic segment. These were employed together castor to prepare series of high...

Helicoverpa armigera (Hübner, 1808) is a significant global agricultural pest, particularly posing major threat during the boll-forming stage of cotton. In recent years, severity its damage has increased markedly, and population dynamics biological characteristics may be profoundly affected by climate change. This study conducted systematic meta-analysis to evaluate life history traits H. under conditions rising temperatures, different photoperiods, humidity levels. A comprehensive analysis...

Cyclization reaction of poly(acrylonitrile-co-2-acrylamido-2-methylpropane sulfonic acid) [P(AN-co-AMPS)] copolymer during thermal oxidative stabilization (TOS) process was investigated by FTIR and two dimensional (2D) correlation analysis technique. The results showed the mechanism cyclization at different temperatures were varying. At 200 °C, reactions generated autocatalytic mechanism. While higher temperatures, took place through ionic free radical AMPS comonomer could reduce heat...

Heat-resistant supercapacitors with excellent mechanical strength are highly required for flexible and wearable electronics in our daily life. Here, high-performance heat-resistant solid-state based on poly(para-phenylene terephthalamide) fibers/Ag/poly(3,4-ethylenedioxythiophene)/polystyrene sulfonate (PEDOT:PSS)&carbon nanotubes (PPTA/Ag/PCNTs) have been fabricated the first time. Due to toughness of PPTA fibers electroconductivity composite fiber, PPTA/Ag/PCNTs-based supercapacitor...

The PBA-derived iron based catalyst effectively converts CO 2 to hydrocarbons, especially C 5+ hydrocarbons.

Using a two-dimensional (2D) correlation analysis technique to determine the sequential order of physical or chemical events has received keen interests in past ten years. However, our continuous work demonstrates that determined by "sequential order" rules this may lead ambiguous even wrong conclusions, because significance generalized 2D is neither well-defined nor meaningful general situations, and word "occur" used easily give rise ambiguity. In contrast integrated derived from periodic...

Whether the process of protein folding/unfolding is fully cooperative or it contains sequential elements has long been a fundamental issue in science. This seemingly became straightforward since appearance generalized two-dimensional (2D) correlation spectroscopy 1990s, because 2D analysis considered as convenient and powerful analytical tool to determine order events under external physical chemical perturbations. In this work, secondary structure transitions regenerated silk fibroin...

Abstract The secondary structure transitions of regenerated silk fibroin (RSF) under different external perturbations have been studied extensively, except for pressure. In this work, time‐resolved infrared spectroscopy with the attenuated total reflectance (ATR) accessory was employed to follow RSF in its wet film low It has found that pressure alone is favorable only formation β‐sheet structure. Under constant there an optimum amount D 2 O (D : = 2:1) so as provide optimal condition...

In order to address the issue of a solar utilization system with low efficiency, this paper designs new conversion based on photovoltaic concentration and spectral splitting. The concentrates sunlight through Fresnel lens uses hollow concave cavity evenly distribute incident energy flow. splitting medium separates useful irradiance for PV cell from those wavelengths that are more suited heat generation. By considering available wavelength cells, GaAs ZnO nanofluid were selected paper. It was...

Cyclization reaction is a crucial step during the heat treatment process of polyacrylonitrile (PAN)-based carbon fibers (CFs). In this work, in situ infrared spectroscopy and two-dimensional (2D) correlation are employed for investigation cyclization mechanisms PAN poly(acrylonitrile-co-ethylenesulfonic acid) [P(AN-co-ESA)] copolymer different temperature treatments under air atmosphere. The was promoted by an acknowledged free radical mechanism. P(AN-co-ESA) autocatalytic A key that...

The sulfured dicyclopentadiene (S-DCPD) is a promising cathode candidate for Li-S batteries. Enlightened by the function of KI in dye-sensitized solar cells, we employ as catalyst preparation S-DCPD without eliminating it assembly As result, sulfurizing reaction proceeds more completely at lower temperature. as-prepared material exhibits different light response to blank sample, changing from higher energy level one. And electrochemistry greatly elevated well. Theoretical calculations...

A facile strategy to synthesize organic cathode material using triquinoxaline (3Q) and elemental sulfur (S) is reported. The 3Q a kind of multiredox phase‐transiting composite with theoretical specific capacity 418 mA h g −1 poor cycling performance. By adding S 3Q@multiwalled carbon nanotubes (MWCNTs) at 165 °C mass ratio 1:4, are chemically matched form an S‐3Q@MWCNT. Interestingly, it found that the as‐prepared sample exhibits single‐electrochemical phase transition higher 608 0.1C rate....

ABSTRACT Polymerizable epoxy resin (PER) surfactants have been prepared from the reaction of bisphenol A with acrylic acid, followed by polyethylene glycol (PEG) different molecular weights. The procedures were monitored chemical titrations, infrared spectroscopy, and NMR. products show typical surface‐active properties as but much higher water solubility than nonpolymerizable nonionic surfactant OP‐10. With increase PEG's weight, HLB value, solubility, critical micellar concentration (CMC)...

Nowadays, waterborne polyurethanes (WPUs) prepared from renewable resources has attracted more and attention. However, due to its structure, the films easily swells in water greatly affects application range of WPUs. Therefore, solving problem resistance is a way improve In this study, series WPU dispersions were using castor oil as bio-based polyol. Besides, thiol-ene photo click reaction was carried out on for silane modification. The effect modification chemical structures properties...