This paper proposes a technique for producing underground backfilling materials using enzyme-induced calcium carbonate precipitation (EICP) technology to address the growing ecological security concerns caused by coal mining. To augment mineralization impact of EICP, diverse levels organic substances, including yeast extract, peptone, and skimmed milk powder, were incorporated into cementing solution offer greater number nucleation sites carbonate. The results indicate that (1) based on...

The utilization of CO2 mineralization fly ash (F) and coal gangue (G) technology is proposed in this research work to prepare underground backfilling materials. test process can be divided into pre-treatment post-treatment stages. In the stage, a sealed stirring vessel used conduct wet mineralization. ratios F G were selected as follows: 20%:60% (F2G6), 30%:50% (F3G5), 40%:40% (F4G4), 50%:30% (F5G3), 60%:20% (F6G2). prepared Φ50 mm × 100 cylindrical samples, with curing durations 3 d, 7 14...

Understanding the complex mechanisms underlying sex differentiation in dioecious plants is fundamental to elucidating plant reproductive strategies and their adaptive responses environmental stresses. Pistacia chinensis, previously considered a strictly species, has been found exhibit monoecy, with closely linked stress during floral development. However, molecular remain poorly understood. This study explores influence of on focus heat shock proteins (Hsps). Biochemical analyses revealed...

Based on the Fisher–Yatess scrambling and DNA coding technology, a chaotical image encryption method is proposed. First, SHA-3 algorithm used to calculate hash value of initial password, which as chaotic system. Second, sequence are scramble plaintext, sorting for secondary scrambling. Then, rules change plaintext pixel values, makes ciphertext more random resistant attacks, thus ensures that encrypted secure. Finally, we add statistics pixel-level diffusion ensure sensitivity. The...

In the field of chaotic image encryption, algorithm based on correlating key with plaintext has become a new developing direction. However, for this kind algorithm, some shortcomings in resistance to reconstruction attack, efficient utilization resource, and reducing dynamical degradation digital chaos are found. order solve these problems further enhance security encryption disturbance feedback mechanism, we present scheme. running-key generation stage, by successively disturbing stream...

Most algorithms of image scrambling transformation based on Logistic map are currently dedicated to permutation rules and methods without considering design philosophy. In this paper, we propose a new bit algorithm the map. This with firmly mathematic theory is designed by following scientific course from practice. According characteristics chaotic sensitivity initial condition large key space, starting map, which can generate uniformly distributed random variable in interval at =4...

To improve image encryption mechanism and enhance the security of pixel value transformation, a new scheme is proposed based on quantum chaos. In phase key generation, running related to plaintext generated by cipher-text successively disturbing chaotic component. process encryption, polynomial multiplication in Galois field first introduced perform then encrypted again with feedback mechanism. The experiment results show that introduction implements one time running-key stream, minimization...

Aiming at high fidelity image only can be encrypted in time domain, summarize the current all kind of encryption methods domain. That are chaos permutation, and hybrid algorithm. Then, this paper proposed block scrambling with after effect. In give formula correlation compare before permutation. After encryption, computing information entropy image. At last, according to security analysis, algorithm demonstrates strong resistance toward exterior attacks such as statistical differential attacks.

A hybrid method of edge detection radar images and classification fused infrared microwave SAR is developed for automatic the main road network in a dense urban area. Fusion effectively reduces noise also removes possible confusion with non-road objects, i.e. linearly featured rivers classification. Possible candidates are further processed using morphological thinning algorithm. Road linking extension carried out hierarchically according to characteristics roads as well their connections....

We propose a new image encryption algorithm with variable length running key based on modified tent map. This map can generate uniform distribution pseudo-random number sequence. In the proposed encryption, we employ strategy of which enlarges value space, one-time is resilient to known/chosen plaintext attack, cipher disturbance minimizes dynamical degradation digital chaos. Simulations have been carried out and results demonstrate strong survival ability our scheme.

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Security and efficiency are two major themes of image encryption algorithm. To enhance the security together with improving operational efficiency, this paper proposes an algorithm based on a novel chaos high-strength primitives. Under framework confusion-diffusion, three core elements affecting security, namely, random number generator, confusion primitive, diffusion primitive thoroughly investigated. Regarding new chaos, 2D-SCM, is constructed result 0-1 test 0.9981. The adopts naturally...