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The objective of the study was to investigate the effect of radio frequency parameters on the thawing time and the uniformity. During the radio frequency thawing of frozen chicken breast at 27.12 MHz and 6 kW, the effects of operating parameters such as electrode gap (8, 9, 10, and 11 cm), voltage (70%, 75%, and 80%) and sample thickness (4, 5, and 6 cm) on the pattern of temperature rise and the uniformity were examined. The results showed that with decreasing electrode gap and increasing voltage and sample thickness, the temperature rise accelerated and the uniformity index decreased. The optimum parameters were determined as 9 cm and 75% for electrode gap and voltage, respectively based on the thawing time and temperature distribution. Compared with thawing at ambient temperature (20 ℃, 6 h), the thawing time with radio frequency was shortened to 54.67 min, and the total viable count, the drip loss and total volatile basic nitrogen (T-VBN) content were significantly reduced (P < 0.05). The results of this study provide a theoretical basis and technical support for the practical application of radio frequency technology in the field of meat thawing.

Objective To preliminarily summarize the epidemiological and clinical characteristics of functional movement disorder (FMD) based on movement disorders clinic in China. Methods and Results A total of 593 patients with movement disorders newly diagnosed in movement disorders clinic of 22 clinical medical centers from August to September in 2023 were included, including 37 patients (6.24%) with FMD and 556 patients (93.76%) with organic movement disorder. Comparison of the epidemiological characteristics of the 2 groups, the proportions of corona virus disease (COVID⁃19) infection (χ2 = 4.217, P = 0.040) and psychopsychological symptoms (χ2 = 18.694, P = 0.000) in the FMD group were higher than those in the organic movement disorder group, while age (t = 3.757, P = 0.000), age of onset (t = 3.720, P = 0.000) and proportion of hypertension (χ2 = 4.736, P = 0.030) were lower than those in the organic movement disorder group. Comparison of the clinical characteristics of the 2 groups, the FMD group had higher proportions of tremor (χ2 = 3.955, P = 0.047) and myoclonus (Fisher′s exact probability: P = 0.011) than the organic movement disorder group, and the proportions of parkinsonism (χ2 = 8.491, P = 0.004) and gait disorder (χ2 = 5.028, P = 0.025) were lower than those in the organic movement disorder group. Conclusions The age and age of onset, as well as the proportions of COVID⁃19 infection, hypertension, psychopsychological symptoms, tremor, myoclonus, parkinsonism and gait disorder with FMD were different from those with organic movement disorder in China.

To obtain healthy, low-sodium cured pork with good flavor, the processing optimization of the liquid smoke and baking was carried out through single factor experiment and orthogonal experiment in the present study. The effect of different amounts of smoking liquid, liquid smoking time, baking time and baking temperature on the yield, water activity, pH and color of low-sodium cured pork was investigated. Results showed that, the order affecting sensory quality of low-sodium cured pork was as follows: Baking temperature>baking time>smoking liquid amount>liquid smoking time. The optimized technological conditions of smoking and baking were as follows: The amount of smoking liquid was 4%, the time of liquid smoking was 150 min, the baking time was 28 h, the baking temperature was 50 ℃, and the sensory score of low-sodium cured pork under this processing technology was 37 points. The electronic tongue test was conducted to compare the taste of low-sodium cured pork with that of commercial cured pork. Results showed that the saltiness of low-sodium cured pork was significantly lower than that of commercial cured pork, and the bitterness and astringency were not significantly different from those of commercial cured pork.

In order to investigate the effect of microalloying element composite adjustment on the corrosion resistance of Q345qE bridge steel, the influences of alloy element Cr, Ni, and Cu composite adjustment on the corrosion resistance of Q345qE bridge steel were studied by confocal laser scanning microscopy (CLSM), electrochemical workstation, field emission scanning electron microscopy (FE-SEM), and X-ray diffraction (XRD). Results showed that the compactness and protectiveness of the rust layer were improved after the composite adjustment of Cr, Ni and Cu microalloying elements. The Cr element in the rust layer on the Q345qE bridge steel surface could be enriched in the inner rust layer, which effectively blocked the penetration and transmission of corrosive ions such as Cl- and enhanced the protective ability of the rust layer on the substrate. After alloying element adjustment, the proportion of α-FeOOH that was more stable than γ-FeOOH in the rust layer of Q345qENH steel increased. Generally, Q345qE bridge steel with composite adjustment by microalloying elements possessed better corrosion resistance compared to ordinary Q345qE in 3.5% NaCl solution.

Objective： Optimized the drying process of jujube slices and improved the product quality. Methods： Taking jujube slices as the research object, the correlation between conversion moisture content, infrared temperature and slice thickness and drying time and drying rate was studied, and the change rule of effective moisture diffusion coefficient of jujube slices in FD-IRD with conversion moisture content, infrared temperature and slice thickness was calculated, and the drying activation energy of jujube slices in FD-IRD was calculated according to the test data. Results： The lower the conversion moisture content is, the shorter the infrared drying time was. But the lower the conversion moisture content would greatly increase the freeze drying time. Proper increase of infrared drying temperature was beneficial to increase the effective diffusion coefficient of water. The thinner the slice is, the higher the drying rate was. Reducing the slice thickness can improve the effective water diffusion coefficient and shorten the drying time. The front and rear two stages were both speeds reducing drying processes. The effective moisture diffusion coefficients of freeze-drying and infrared drying under different drying conditions by solving Fick's second law were 3.39×10-9~9.47×10-9 and 3.34×10-9~2.01×10-8 m2/s, respectively; The drying activation energy of the infrared drying stage was 59.03 kJ/mol calculated by Anius formula. Conclusion： The conversion moisture content is 30%, and the infrared temperature is 60 ℃. Under the condition of slice thickness of 6 mm, the freeze infrared combined drying technology has short drying time and high efficiency.

With the rapid development of artificial intelligence (AI) technology, especially the application of deep learning (DL), the detection and quantitative evaluation of typical imaging markers of small cerebral vascular disease (CSVD) has been accelerated and the accuracy has been improved. In recent years, it has attracted much attention in the field of medical imaging. This paper intends to summarize the research progress and problems of deep learning in the imaging markers of CSVD such as cerebral microbleeds (CMBs), white matter hyperintensities (WMH), enlarged perivascular space (EPVS), lacunes, recent small subcortical infarcts (RSSI) and cerebral atrophy, so as to provide support for the precise treatment of CSVD.

Metrnl is a new cytokine with homologous orignination from neurotrophic factor Meteorin. Meanwhile, as a secreting protein, its gene and products show low tissue specificity and is widely expressed in different tissues of host. Similar to neurotrophic factor, adipocytokines, inflammatory factor and muscle factor, the protein plays a role in neural development, immune inflammatory response and metabolism and so on.

【Objective】 Infiltrometer is a device to measure water infiltration into soil and soil hydraulic conductivity. Its performance depends on many factors. This paper aims to study the effect of the negative pressure in it on water infiltration in crusted soil. 【Method】 The crusts on the soil surface were created by artificial rainfalls on a loess slope; water infiltration into the soil was measured using a mini disc infiltrometer with the negative pressure in it varying from 1 to 5cm. We also measured saturated hydraulic conductivity of the soil using the constant-head method and then used it as a benchmark to test the results measured from the infiltrometer. Water flow under both methods was described by the Wooding and Philip model. 【Result】 The hydraulic conductivity measured using the constant head was more accurate and repeatable. The saturated hydraulic conductivity of the crust and soil matrix was 74.00 cm/d and 12.00 cm/d respectively. The indexes of cumulative water infiltration, steady infiltration rate, infiltration rate and hydraulic conductivity of the crust and soil matrix measured by the infiltrometer decreased with the increase in the negative pressure. Using the saturated hydraulic conductivity measured from the infiltrometer, the Philip model reproduced the infiltration process more accurately, despite the effect of the negative pressure. Fitting the results to the van Genuchten formula revealed that the parameters α and n were 0.039 cm and 2.72 respectively for the crusts, and 0.024 cm and 2.83 respectively for the soil matrix. 【Conclusion】 Negative pressure in the infiltrometer affects saturated hydraulic conductivity calculated using the measured data from crusted soil, and should be considered in data analysis.

Objective: This study aimed to the optimize infrared drying process of Hami-melon slices and improve quality and efficiency. Methods: Using ultrasonic treatment as a pretreatment method, the effects of drying temperature, slice thickness and ultrasonic treatment time on drying time, color difference value and vitamin C content were studied, and the drying time, quality and microstructure of the products were compared with those without ultrasonic treatment. Results: The optimal process parameters of ultrasonic pretreatment for infrared drying of Hami-melon slices were drying temperature 61 ℃, slice thickness 6 mm and ultrasonic treatment time 15 min. Under the control of these conditions, the drying time was 115 min, the color difference value was 13.79, and the vitamin C content was 112.1 mg/100 g. Compared with the untreated products, the drying time was shortened by 45.24%, the color difference was reduced by 13.38%, and the vitamin C content was increased by 16.71%. The microstructure showed that ultrasonic waves caused the expansion and contraction of the internal tissue of Hami-melon slices, and the structure was multi-channel. Conclusion: Ultrasonic treatment can be used as a pretreatment method to improve the infrared drying of Hami-melon slices, thereby improve the quality and efficiency of the drying process.

Plasma protein products, essential drugs for various clinical diseases, are therapeutic biological products extracted from healthy human plasma. The research and development of new plasma protein products, led by United States and European, has been widely deepened and enhanced. Therefore, accelerating the development of new plasma protein products in China is of great significance. This review summarizes the research and development of plasma protein products that have been marketed abroad but have not produced in China, as well as analyzes the difficulties and prospects of the development of plasma protein products in China.

Aiming at solving the problem of auxiliary disease diagnosis for electronic medical record,the word vector and text discrimination method are applied to the semantic text analysis task.Concretely,the pre-training language model is used as the semantic representation of characters,so as to accurately express the text features.After extracting N-ary features from convolutional neural network,the capsule unit is used to cluster the features,so as to better capture the high-level semantic text features and reduce the demand for data.It is found that the combination model based on ERNIE+CNN+Capsule achieves high accuracy on the real EMR.In addition,inspired by the image style transfer,a style conversion model from EMR text to disease self-report text is trained.Based on the style conversion model,non-parallel data are used to add confrontation ideas and confusion evaluation indexes,which can effectively alleviate the problem of inconsistent distribution of training data and test data.Finally,compared with ALBERTtiny,BERT and other models,the proposed model gets 86.89% F1 value in the EMR,which is improved by1.36%~3.68%,and 94.95% F1 value in the generalization.Experiments show that the proposed model can effectively adapt to the auxiliary disease diagnosis on the premise of ensuring high accuracy.

Objective To explore whether erastin induces apoptosis and to investigate the molecular mechanism in A549 cells. Methods A549 cells were treated with erastin at different concentrations, with or without ROS scavenging agent N-acetyl-L-cysteine (NAC) and with or without apoptosis inhibitor (Z-VAD-FMK). Then iron content was measured with Iron Assay Kit, cell injure and apoptosis with CCK-8 and flow cytometry in A549 cells. Results Erastin induced the increase of iron content and followed by the injury of A549 cells. Erastin further induced apoptosis of A549 cells (P＜0.05), which was inhibited by apoptosis inhibitor Z-VAD-FMK. Erastin induced an increase in peroxides (ROS) then followed by apoptosis(P＜0.05), which was inhibited by the ROS scavenging agent NAC(P＜0.05). Conclusions Erastin has an inhibitory effect on NSCLC A549 by inducing intracellular ROS production, which provides evidences for the pathogenesis, diagnosis and treatment of NSCLC.

With continuously increasing urban construction, more underground projects require the breaking of rocks near sensitive areas, such as hospitals, schools, and residential areas. On one hand, since conventional blasting that uses explosives has a negative impact on the safety of the surrounding buildings and brings about noise and flying rocks, the use of explosives are sometimes not allowed. On the other hand, the efficiency of mechanical rock excavation is very low, resulting in a low speed of rock excavation and high operation cost. In view of this situation, techniques that incorporate carbon dioxide phase transition fracturing have been tried in rock fragmentation in complex and sensitive environments such as those mentioned above. Furthermore, carbon dioxide phase transition fracturing is also regarded as an ideal substitute for the explosives in the field of coal permeability improvement. As an environmentally friendly rock-breaking technology, carbon dioxide phase transition fracturing has the advantages of high excavation efficiency, low vibration, and no pollution. In recent years, it has become a hot topic in the field of rock breakage and excavation. Research on this gas explosion technology has been developed rapidly and several useful progresses were made in this technology using theoretical analysis, experiments, and numerical simulations in a wide range. Through investigation and analysis of existing research results, the rock breakage mechanism of carbon dioxide phase transition fracturing was elaborated. A review was also presented on the fracturing load characteristics and its testing method. The main factors influencing the fracture load and fracture result were recapitulated. This review also analyzed the harmful effects of this new technique and generalized the applications of this technology in different fields. Finally, the problems and future challenges of carbon dioxide phase transition fracturing were discussed. The review aims to provide a reference for the theoretical research, generalization, and application of carbon dioxide phase transition fracturing technology.

Objective To investigate methods for predicting uric acid stones with conventional CT by measuring the CT value of stones, mean diameter size, density of stones, stone to kidney CT value ratio, and body width. Methods Patients underwent conventional CT scanning and were diagnosed postoperatively before uric acid stones and non-uric acid stones were detected by dual-energy CT.A total of 50 patients with uric acid stones and 60 patients with non-uric acid stones were enrolled, and after stones were detected by conventional CT scan, uric acid stones and non-uric acid stones were distinguished by dual-energy CT. The selected stones were ＞ 7 mm in long diameter. Data acquisition was performed on enrolled patients by a radiologist blinded to stone composition. The predictive value of each index was evaluated by independent sample t test, chi-square test, and receiver operating characteristic curve (ROC). Results There was great value in distinguishing uric acid stones from non-uric acid stones in stone CT value (P＜0.01), significant statistical difference in uniform stones or not and in size (P＜ 0.05). The CT scan showed a high predictive value for the diagnosis of uric acid stones, with AUC=0.948, sensitivity as 94%,and specificity as 85%.According to the ROC curve, the CT scaning value of 730 HU was adopted as the threshold for the diagnosis of uric acid stones, with a positive predictive value of 83.9%, a negative predictive value of 94.4%, and an accuracy of 80.1%. The size of the stone also had a predictive value, AUC=0.63, sensitivity 36%, and specificity 88.3%, and the mean diameter of the stone greater than 18.05 mm was defined as a diagnosis standard of uric acid stones according to the ROC curve, which had a positive predictive value of 72%, a negative predictive value of 62.4%, and an accuracy of 64.5%. Using a stone CT value of 730 HU as the threshold combined with a uniform stone density to predict uric acid stones, its specificity was 100% and the positive predictive value was 100%. Conclusions Conventional CT is of high value in differentiating uric acid calculi from non-uric acid calculi by measuring the mean diameter size and density of calculi. When evaluate CT result with or without homogenous stone density as the diagnostic criteria, the specificity and positive predictive value of diagnosing uric acid calculi are significantly higher.

With the increasing penetration of distributed energy in power systems, the optimal power flow (OPF) analysis-based distribution network energy management system faces challenges such as high data dimensionality, long solution time, and large computational load. In response to these challenges, this paper aims to use the alternating direction method of multipliers (ADMM) to solve the OPF problem of active distribution systems in a fully distributed fashion. Considering the impact of distribution system partitioning on the performance of distributed algorithms, a data-driven network partitioning method based on measurement data is proposed to accelerate the convergence rate of the optimization algorithm. Moreover, different from traditional ADMM algorithms that rely more or less on certain global information, this paper integrates a consensus-based method to coordinate the balance problem at the interface between regions, thereby achieving a fully distributed solution to the OPF problem. In addition, this paper employs the LinDistFlow AC power flow approximation model to resolve the non-convexity challenges of the OPF problem. Finally, the effectiveness of the proposed method is verified through tests on IEEE distribution network cases of different sizes, and its performance in terms of error accuracy and computation time of the optimization algorithm is superior in comparison to other partitioning methods. [ABSTRACT FROM AUTHOR]

Steel slag is an industrial solid waste generated during the steelmaking process and is an important secondary resource. Since steel slag is rich in aluminosilicates, it can be used to make ceramics. The use of steel slag to prepare ceramics plays an important role in the utilization of it. In this paper, the effect of the sintering temperature and holding time on the sintering process and the densification of products during the preparation of ceramics from steel slag were explored. In particular, low magnesium (Mg) and high Mg samples were chosen for study. The Mg oxide content for the low Mg sample was 2.52% and it was 10.50% for the high Mg sample. Current studies of steel slag ceramics mainly consider the amount of steel slag, the basic formula of the trial, the subsequent performance of the test specimen, the influence of a certain element on the mechanical properties, and the crystal phase of the ceramic. In this work,the preparation of the ceramics with steel slag and clay as main raw materials was considered. By establishing the kinetic description of the sintering process, the sintering activation energy with different magnesium contents could be calculated. The sintering activation energy for the low magnesium and high magnesium ceramic samples was relatively small, and was 36 kJ·mol-1 and 54 kJ·mol-1, respectively. Meanwhile, the densification of the ceramic samples with different magnesium contents was investigated. It is concluded that the material migration mechanism is controlled by surface diffusion when the sintering temperature of the low magnesium sample is 1000℃. At 1100℃, the volume diffusion is the main control mode. When the high magnesium sample is sintered at 1110℃ or higher, the sintering process is mainly controlled by the diffusion of the liquid phase.

o explore the impact of rainfall patterns on the waterlogging resilience of urban rainwater systems based on the MIKE FLOOD platform, this paper conducts a study by using the bridge partition in the starting area of converting the new and old kinetic energy in Jinan. The waterlogging process scenarios are derived for 7 return periods, 3 rainfall durations, and 3 rainfall peak coefficients of the design rainfall. The system's waterlogging resilience is quantified by using the Analytic Hierarchy Process (AHP) based on the amount, area, and average depth of waterlogging. The results show that the peak water accumulation and peak water accumulation area both increase with the increase in the return period and rainfall duration, and the average water accumulation depth fluctuates greatly. The system performance mainly fluctuates twice. The first fluctuation is caused by changes in rainfall intensity and the shallow depths cause the second in most of the depressions in the study area. As the return period increases, the system s waterlogging resilience decreases, and the difference in rainfall corresponding to the extreme value of waterlogging resilience caused by the unit rainfall peak coefficient increases. Overall, the more centered the rainfall peak and the longer the rainfall duration, the lower the system s waterlogging resilience. [ABSTRACT FROM AUTHOR]

The effects of dielectric barrier discharge ( DBD) plasma on the inactivation effect, the cell morphology, membrane changes and intracellular reactive oxygen species ( ROS) levels of Listeria monocytogenes were investigated by scanning electron microscopy (SEM), flow cytometry, fluorescence staining and so on. The results showed that the population of L. monocytogenes was reduced from an initial level of 8. 26 lg CFU/mL to 1. 30 lg CFU/mL after DBD plasma treatment at 20. 8 W for 80 s, and the intracellular ROS level increased by 9. 5-folds ( P < 0. 05). DBD plasma treatment caused damage in the morphology and cell membrane of L. monocytogenes in a treatment time-dependent manner. Moreover, DBD plasma caused the depolarization of the cell membrane of L. monocytogenes. In addition, after DBD plasma treatment, the pH value of normal saline decreased significantly, the oxidation-reduction potential and concentration of NO-, NO2 and H2O2 increased significantly. In summary, DBD plasma could inactivate L. monocytogenes by disrupting cell membranes and inducing oxidative stress damage. [ABSTRACT FROM AUTHOR]

Density Tapered Arrays (DTA) with nonperiodic spaced elements have many interesting features when compared to traditional DTA in which antenna elements are located only at the intersections of periodic grid; however, a design method is yet to be fully develoed. A new approach is presented using Centroidal Voronoi Tessellations (CVT) to design DTA with nonperiodic element distributions proportional to the desired amplitude taper and with nonperiodic and ‘uniform’ properties. A 32.8λ diameter circular aperture array with 1656 elements is discussed and theoretical patterns are computed for density tapers modeled after −25 dB,−30 dB,−35 dB, and −40 dB circular Taylor distributions. The obtained sidelobe levels and aperture efficiency are better than heretofore reported.

DOI: 10.3969/j.issn.1672-6731.2015.08.015

The purpose of this paper is to study the changes of sensory qualities of fresh chestnuts stored at different temperatures after vacuum packaging, aiming to provide some technical references for commercialization and circulation of fresh chestnuts. The cold sterilized fresh chestnuts were packed in vacuum and separately stored at 4 °, 20 ° and 30 °. The sensory qualities, water contents, total starch contents, total soluble sugar contents, total protein contents, ash contents and VC contents were regularly determined. The mathematical model of quality changes and storage time was simulated and analyzed by variance. The results showed that during storage at different temperatures, the moisture contents of fresh chestnuts were decreased with time, and was significantly positively correlated with sensory scores (P<0.01). The storage time was negatively correlated with sensory scores (P<0.01). The total protein contents had no evident changes. According to the fitted regression equation of fresh chestnut qualities indices and shelf lives at different storage temperatures, the edible qualities of fresh chestnuts packed in vacuum could be maintained for about 27.62 d at 4 °, 12.41 d at 20 °, and 7.03 d at 30 °. The verification test results were close to the predicted results, and the equation could be used to predict the retention time of fresh chestnuts at different temperatures. [ABSTRACT FROM AUTHOR]

o-Phenylenediamine and terephthalaldehyde were used to synthesize Schiff base,and metal nitrates were added in the Schiif base synthesis synthesize polymeric Schiif Base. Cyclic voltammetry ( CV), constant current charge-discharge (GCD) and electrochemical impedance spectroscopy ( EIS ) were used to evaluate the electrochemical performance of the electrode materials. The electrochemical performance of Zn-COF improved significantly comparing with that of COF'specially when the current density was 0. 5 A/g,Zn-COF showed a superior capacitance of 184 F/g. The specific capacitance of Zn-COF and Co-COF could be maintained above 90% over a long period of time. [ABSTRACT FROM AUTHOR]

A field experiment with different nitrogen fertilization rates and mitigation measures was conducted in an open-ground vegetable field on the North China Plain to investigate the effects of nitrogen application level and management practices on ammonia volatilization and N2O emission. Reducing the nitrogen fertilization rate by 20% and by 50% decreased ammonia volatilization by 25.7% and 48.0%, respectively, during the spring-sowed cucumber growth period. Amendment with combined inhibitors and biochar decreased ammonia volatilization loss by 10.0% and 6.1%, respectively. Reducing nitrogen fertilization rate by 20% and 50% decreased N2O emission by 28.8% and 61.0% during the spring-sowed cucumber growth period. Addition of combined inhibitors decreased N2O emission by 58.9%, while it was increased by 14.1% with biochar addition. Under the same application method of banding application, replacing 30% nitrogen fertilizer with organic manure did not show any significant mitigation for ammonia volatilization and N2O emission. For the intensively managed vegetable fields, reducing the nitrogen application rate appropriately was the most effective measure to reduce ammonia volatilization and N2O emission. [ABSTRACT FROM AUTHOR]

A strain PSPSA1 with strong phosphate-solubilizing ability was isolated from the rhizosphere of tree peony. This strain was identified based on morphological characteristics, physiological and biochemical experiments, and 16S rDNA sequence analysis. Furthermore, its genetic stability and phosphate-solubilizing characteristics were investigated. Strain PSPSA1 was identified as the actinomycete Streptomyces albireticuli and showed high genetic stability. The order of phosphate solubilization capacity (PSC) in different phosphorus-source culture media was calcium phosphate (158.5 mg ⋅ L-1) > aluminum phosphate (139.9 mg ⋅ L-1) > ferric phosphate (127.7 mg ⋅ L-1) > lecithin (45.6 mg ⋅ L-1). The PSC and pH were significantly negatively correlated in inorganic phosphorus solution, but were not correlated in organic phosphorus solution. When using different carbon sources, PSC was in the order of lactose > glucose > maltose > fructose > sucrose > starch > cellulose. For different nitrogen sources, PSC was in the order of peptone > ammonium nitrate > ammonium sulfate > potassium nitrate > urea. Using glucose as a carbon source and peptone as a nitrogen source, strain PSPSA1 achieved the highest PSC of 202.6 mg ⋅ L-1. After incubated for 60 days, the available phosphorus content in soil with a single application of strain PSPSA1 increased by 68.2% compared with control, and the available phosphorus content in soil with mixed application of strain PSPSA1 and organic fertilizer increased by 76.7% compared with a single application of organic fertilizer. The results indicated that the strain PSPSA1 had a strong ability to dissolve insoluble phosphorus and its mixed application with organic fertilizer improved the phosphorus solubilization. Thus, PSPSA1 is a promising microbial resource for the production of high-efficiency biological phosphorus fertilizer. [ABSTRACT FROM AUTHOR]

Mining-induced cracks in thin bedrock at shallow depth have been studied based on physical modeling to learn failure mechanism and instability quantitatively. A model of pillar structure of overburden rock was proposed and the formation mechanism was described. According to the resistance of working support, it is pointed out that during the occurrence of periodic pressure the support compressed by tremendous pressure from pillar structure fails with wave characteristics. Rased on the evolution of rupture angle, it is revealed that rupture angle is large at the cutting roof line easily leading to the formation of a pillar structure. There are three failure ways of pillar instability including tension-induced collapse, sliding-induced instability and overturning-induced instability. Due to the constrained lateral displacement by the hardness or softness of soil or sand, two modes of pillar structures are proposed to explain different stability coefficients. For soft model, tensile-shear mixed type is most likely to happen, then a tensile type. For hard condition, only a shear type most likely happens. It is found out that overturning-induced instability is easier to happen in both models followed by tension-induced collapse. [ABSTRACT FROM AUTHOR]

Entity resolution is a fundamental issue in the process of data cleaning in data mining. With the advent of heterogeneous networks that consist of multi-typed objects, it is necessary to identify entities of different types simultaneously. In this paper, we propose a co-clustering algorithm for collective relational entity resolution in data set containing two types of entities. Specifically, we first classify objects into dominant objects and assistant objects according to their roles in entity resolution. Then, a two-phase framework for entity resolution of two object types based on co-clustering is presented, which obtains the object clustering results of each type simultaneously and considers references assigned to the same cluster as the same entity. A numerical example is also presented to illustrate the proposed new algorithm. [ABSTRACT FROM AUTHOR]

There are some difficulties in studying the law of mining-induced crack propagation and distribution in overlying strata, which directly influence the safety and efficiency of underground work including gas drainage for high-gas coal mine. The relationship between crack propagation and released energy was modeled based on the Steiner Minimum Tree Problem (SMTP for short). The modeling pointed out that the cracks initially expanded along the fastest path with minimum energy. Then the problem can be determined as constrained SMTP based on the comparison of real and mathematical crack modeling. The failure mode of overburden followed the bed-separated crack forms model of four points. Furthermore laboratory tests show that the theoretical and real rupture angles has no obvious relationship with depth. From the mechanical mechanism, the partial destruction of the rock surface can be explained by the Mohr-Coulomb criterion, and from the energy point of view, a combination of many different paths made of rock fracture surface is also optimal path. At last the physical meaning of the parameters in the formula of angles of strike-displacement is redefined. The study shows that the modified formula is an integral concept based on different expansions of mining-induced crack in overburden, and the direct manifestation of the principle of Steiner Minimum Tree. [ABSTRACT FROM AUTHOR]

Composting is an effective way to realize the treatment and recycling of livestock manure. However,traditional composting process has the problems of slow temperature rising, poor dehydration effect and serious nitrogen loss. Composting experiments of pig manure were carried out to investigate the influence of different rates of bamboo biochar addition on the temperature rising speed, dehydration effect and nitrogen loss during the composting process. The results showed that the addition of bamboo biochar could shorten the temperature rising time of the pile by 24-48 h, increase the dehydration rate by 13. 6% -21. 4%, and prolong the lasting time of the thermophilic phase by 216-264 h. The NH4 +-N, NO3--N, and total nitrogen contents in the pile were higher under the treatments with bamboo biochar amendment than under the control, and moreover, the nitrogen fixation percentage increased by 28.3% -65.4% as compared to the control. [ABSTRACT FROM AUTHOR]

The article presents a study which investigates the impact of chrome addition in diets of liver structure and oxidation prevention function in rabbit serum under heat stress.

The large-scale content-based image retrieval system must be an important means of getting semantic information, firstly it needed to solve the problem of the semantic gap which between the high-level semantics the users needed and the low-level features of the image. Facing to this question, it introduced the image semantic attributes, and combined with incremental learning method OCVM, this paper proposed a new method which based on building a new large-scale content-base image retrieval system incrementally. It used the retrieval feedback learning mechanisms to enhance the accuracy on identifying the image semantic attributes. With the expansion of the scale of the image library, it could improve the reliability of the content-based image retrieval at the same time. The experimental results show the effectiveness of the above method, and the retrieval performance of the method can gradually achieve the method which constructed offline, but has better scalability and improving capacity itself. [ABSTRACT FROM AUTHOR]