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Rotary kiln has been widely used in hazardous waste treatment because of its strong adaptability to raw materials, high productivity, and simple processing technology. However, the formation of deposits reduces its performance period and profitability. This study characterized the deposit mineralogy and thermodynamically and experimentally investigated its formation mechanism. The results show that the main phases of the deposit are magnetite, monolithic iron, olivine, and yellow feldspar. They indicate that the deposit formation process was accompanied by the participation of alkaline and iron oxides. The intermediate product Ca2SiO4 can promote the generation of low melting point phases, such as CaFeSiO4 and Ca2Al2SiO7, which are the main phases of deposit materials. Additionally, the reduction intermediate product FeO facilitated the generation of a liquid ferrous mixture (Fe3O4-FeO and Fe3O4-FeO-Fe mixture), which in turn further promoted the growth of the initial deposit phase. The solid deposit formed and attached to the kiln inner wall, along with a decrease in temperature. These results are expected to provide an idea or approach for fundamentally solving the problem of deposits in the rotary kiln. [ABSTRACT FROM AUTHOR]

It is vital to promote the sustainable economic and social development and ecological culture prosperity of forest areas in various regions to scientifically and objectively understand the development status of forestry-ecological-culture industries in all provinces (districts and cities) of China. It is also important to clarify the advantages of industrial development in various regions. Based on the comprehensive consideration of economic, social, and political factors, the evaluation index system of forestry-ecological-culture industry, which includes industrial productivity, industrial influence, industrial and driving force, is constructed in this study. Furthermore, the development of forestry-ecological-culture industry in 31 provinces and regions of China from 2014 to 2019 is analyzed by cluster analysis. The analysis categorized the industries into four development types: very high level developed, high level developed, medium level developed, and low level developed according to the principal component score, which sums up the characteristics of various types of industrial development. The results show that the forestry-ecological-culture industry in China presents the spatial distribution of "east high and west low", which is related to the difference in regional economic development level. Furthermore, the advantage of resource endowment is not clear, the gap between provinces and regions is large, and the overall development level of industry is relatively low. The findings of this study provide theory-based guidance and policy suggestions for improving the efficiency of industrial development and optimizing spatial distribution of diversified industrial development. [ABSTRACT FROM AUTHOR]

Ecological and cultural forestry need to be integrated for successful rural revitalization. A proper rural revitalization strategy should be linked to the value of the eco-cultural forestry industry. To adjust and optimize the structure of this industry, we need to develop the primary and tertiary industries and structurally optimize the secondary industry. The sustainable development of forestry requires us to promote the unity of the ecological, social, and economic benefits of forestry. By unifying ecological forestry and the cultural industry, we can capture consumer market trends, enhance industrial development policies, and increase the training of high-level talents to better deal with the danger of industrial hollowing out and resolve the embarrassment of the low end of the value chain. By integrating and promoting the two systems of ecological forestry and the cultural industry, we can converge their respective values and allow more nuanced value cognition when exploring the development paths of industry integration. In the period of overall transfer of forestry development strategy, it is of great significance to develop a forestry economy according to the evolution law of forestry industry, give full play to the advantages of forestry ecological culture resources, and vigorously develop forestry ecological culture industry under the background of rural revitalization strategy. Based on the integration of forestry industry, the aim of this study is to summarize the forestry ecological culture industry development mechanism, summarize the value of forestry ecological culture industry development strategy, put forward building a new era forestry ecological culture industry system, capture the consumer market trend, optimize industrial development policy, increase the high-level talent training industry integration development path, improve rural ecological advantages into ecological economic advantages, provide more and better green ecological products and services, promote the ecological and economic virtuous cycle, and realize the sustainable development of the forestry economy. [ABSTRACT FROM AUTHOR]

We propose a unidimensional two-way continuous-variable quantum key distribution protocol with coherent states, where the sender modulates a single quadrature of the coherent states rather than both quadratures to simplify the structure of a two-way system. Security analysis is performed with a general attack strategy, known as two-mode attack, which helps to reduce limitations in the analysis. The performance of the protocol under all accessible two-mode attacks at fixed distance is illustrated. Further, two typical two-mode attack strategies are obtained from it, which are one-mode attack strategy and optimal two-mode attack strategy. Between them, the one-mode attack is the simplest form of the two-mode attack, while the optimal two-mode attack is the most complicated one. Simulations show that though the system is simplified, the performance of the two-way protocol with unidimensional modulation is still comparable to that of the counterpart with Gaussian modulation even against the optimal two-mode attack when Eve's ability is maximized. Thus, the proposed protocol simplifies the two-way system while guaranteeing its performance to a certain extent. Especially in a practical system with short transmission distance and high excess noise, the protocol has a good application prospect. [ABSTRACT FROM AUTHOR]

A unidimensional continuous-variable quantum key distribution protocol with untrusted detection is proposed, where the two legitimate partners send unidimensional modulated or Gaussian-modulated coherent states to an untrusted third party, i.e., Charlie, to realize the measurement. Compared with the Gaussian-modulated coherent-state protocols, the unidimensional modulated protocols take the advantage of easy modulation, low cost, and only a small number of random numbers required. Security analysis shows that the proposed protocol cannot just defend all detectors side channels, but also achieve great performance under certain conditions. Specifically, three cases are discussed in detail, including using unidimensional modulated coherent states in Alice's side, in Bob's side, and in both sides under realistic conditions, respectively. Under the three conditions, we derive the expressions of the secret key rate and give the optimal gain parameters. It is found that the optimal performance of the protocol is achieved by using unidimensional modulated coherent states in both Alice's and Bob's side. The resulting protocol shows the potential for long-distance secure communication using the unidimensional quantum key distribution protocol with simple modulation method and untrusted detection under realistic conditions. [ABSTRACT FROM AUTHOR]