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Objective: This study aimed to improve the tenderness and flavor content of Yanbian cattle beef. Methods: Rump beef of Yanbian cattle were dry-aged by using three different methods, i.e., Method A: RH（65±5）% aging for 10 days, RH（75±5）% aging for 10 days, and then RH （85±5）% aging for 20 days; Method B: RH（75±5）% aging for 20 days and then RH（85±5）% aging for 20 days; Method C: RH（85±5）% aging for 40 days. The quality changes caused by the different aging processes were then analyzed and compared. Results: The cooking loss of the beef processed by all the three methods increased significantly with the extension of aging time, but the beef loss (39.14%) in Group A was the highest. The TBARS and TVB-N values of group C were 1.387 and 14.833, respectively, significantly higher than those of the other two groups. The fat and protein contents of each group showed an increasing trend, while the shear force value decreased by 50%. No significant difference in the changes of cooking loss rate, color and pH value were found among the groups. The results showed that with dry-aging, the richness of taste attributes was elevated with higher freshness and aftertaste. The bitterness in group B was lower, and the relative content of aldehydes and ketones among volatile flavor compounds was higher. Conclusion: Method B was the best dry-aging process for Yanbian cattle rump beef.

Summarizes Weissiella spp. including the isolation and identification, biological properties, acid tolerance, bacterial inhibition, extracellular polysaccharide production, probiotic properties, histological studies, and food and pharmaceutical applications, and provides suggestions for the development and utilization of Weissiella spp.

According to the United Nations trade policy review documents, notifications, comments, special trade concerns and official authoritative research reports, the Bangladesh agricultural food product quality and safety regulatory bodies, laws and regulations, standard system, and other aspects were reviewed. It was suggested that Chinese export enterprises take advantage of local agricultural food products to actively explore the import and export trade market between China and Bangladesh. Moreover, Chinese regulators should be followed Bangladesh agricultural food products regulatory system changes, to further strengthen the assistance of agricultural and food product safety system in Bangladesh. Functional advantages can better promote bilateral trade between the two countries.

With the enrichment of data sources,data can be obtained easily but with low quality,resulting that the MVs are ubi-quitous and hard to avoid.Consequently,MV imputation has become one of the classical problems in the field of data quality mana-gement.However,most existing MV imputation approaches are proposed for static data,which cannot handle dynamic data streams arriving at high-speed.Moreover,they do not consider data sparsity and heterogeneity simultaneously.Therefore,a novel MV imputation approach,real-time imputation based on individual models (RIIM) is proposed.In RIIM,the MVs are effectively filled by combining the basic ideas of neighbors-based imputation and regression-based imputation with consideration of sparsity and heterogeneity of data.For the dynamic and real time of data streams,the MV imputation model is updated incrementally.Moreover,an adaptive and periodic updating strategy for optimal neighbors search is proposed to solve the problem of high time cost and hard to determine the number of neighbors.Finally,the effectiveness of the proposed RIIM is evaluated based on extensive experiments over real-world datasets.

Existing knowledge graph completion models learn a single static feature representation for entities and relationships by integrating multi-source information.But they can't represent the subtle meaning and dynamic attributes of entities and relationships that appear in different contexts.That is,entities and relationships will show different attributes,because they have different roles and meanings when they are involved in different triples.To solve above problems,an adaptive attention network for knowledge graph completion is proposed,which uses adaptive attention to model the contribution of each task-specified feature dimension,and generates dynamic and variable embedding representations for target entities and relationships.Specifically,the proposed model defines the neighbor encoder and the path aggregator to process two structures in the entity neighborhood subgraph,adaptively learn the attention weights to capture the most logically related features of the task,and to give the entities and relationships with fine-grained semantics in line with the current task.Experimental results in link prediction task show that,the MeanRank of the proposed model on FB15K-237 dataset is 6.9% lower than PathCon,and Hits@1 is 2.3% higher than PathCon.For the sparse datasets NELL-995 and DDB14,its Hits@1 reaches 87.9% and 98% respectively.Therefore,it proves that the introduction of adaptive attention mechanism can effectively extract the dynamic attributes of entities and relationships to generate a more comprehensive embedding representation,and improves the accuracy of knowledge graph completion.

The polarization moments of S-band dual-polarimetric radar are mainly affected by ground clutter jamming and non-uniform filling (hereinafter called NBF), which cause the application errors for quantitative precipitation estimation. In this paper, an adaptive calculation algorithm is proposed to calculate the specific differential phase. The specific calculation steps are as follows. After the differential phase is unfolded, a preliminary recognition of the meteorological and non-meteorological echo is made using the signal-to-noise ratio or correlation coefficient to distinguish whether NBF is radial or not. The correction of correlation coefficient is then adopted for the NBF radial. Then the Order (9) or Order (25) filtering window is used to smooth the differential phase and interpolate the non-meteorological block. Based on the reflectivity and the corrected correlation coefficient, the specific differential phase is finally calculated by the 9-point or 25-point least square method (LS). The results show that the differential phase fold affects the quality of differential phase data as well as the following calculation. The proposed method can distinguish meteorological and non-meteorological echoes effectively. The correction of NBF radial correlation coefficient can improve the underestimation of correlation coefficient. The combination of Order (9) and Order(25) filter windows can preserve the original trend as well as smoothing the differential phase curve. And the application of 9 points and 25 points LS method promotes the calculated differential phase closely toward real values.

Background Although the early behavioral symptoms of behavioral variant frontotemporal dementia (bvFTD) are prominent, early diagnosis for bvFTD is difficult due to confusion with other mental disorders, and lack of sensitivity and specificity of diagnostic criteria, etc. In this paper, we summarized the important reviews in recent years and analyzed the clinical characteristics of bvFTD patients to improve the detection of early symptoms in bvFTD. Methods Twenty-three possible or probable bvFTD patients were diagnosed according to International Behavioral Variant Frontotemporal Dementia Criteria Consortium (FTDC). Self-designed questionnaires designed by Shanghai Mental Health Center were used to collect sociodemographic data and general information of patients. Their clinical characteristics were summarized, including abnormal behaviors, cognitive impairment, psychotic symptoms and other symptoms. Mini-Mental State Examination (MMSE), Activities of Daily Living (ADL) and Clinical Dementia Rating Scale (CDR) were used to make neuropsychological tests and compare with similar overseas studies (control group, N = 66). Results Eleven male patients and 12 female patients were included in our study. Compared with control group, the average age of onset [(50.83 ± 11.55) years vs. (57.00 ± 10.00) years; t = 3.863, P = 0.000] and average age of diagnosis [(53.22 ± 11.55) years vs. (61.00 ± 9.00) years; t = 13.423, P = 0.000] of bvFTD patients were smaller. The study showed that bvFTD patients had more apathy or indolence [95.65% (22/23) vs. 65.15% (43/66); χ²=8.057, P = 0.005], loss of sympathy or empathy [95.65% (22/23) vs. 33.33% (22/66); χ²=26.499, P = 0.000], while patients in control group showed more derepression behavior [98.48% (65/66) vs. 52.17% (12/23); χ=27.514, P = 0.000] and continuous, stiff, obsessive and/or ritualized behavior [95.45% (63/66) vs. 30.43% (7/23); adjusted χ²=39.159, P = 0.000]. For cognitive impairment, bvFTD patients presented apraxia [69.56% (16/23) vs. 22.73% (15/66); χ²= 16.484, P = 0.000] and executive dysfunction [82.61% (19/23) vs. 59.09% (39/66); χ²=4.156, P = 0.041]. In psychotic symptoms, patients in control group showed hallucination and delusion [33.33% (22/66) vs. 4.35% (1/23); χ²=7.477, P = 0.006]. Conclusions While the behavioral symptoms of bvFTD patients are varied, memory disorder can be one of the primal symptoms. Compared with similar foreign studies, the different composition of behavior symptoms of our bvFTD patients may be caused by cultural differences among evaluators in the understanding of some clinical symptoms in patients. [ABSTRACT FROM AUTHOR]

With the mine ventilation system becoming more and more complex,the traditional calculation methods have difficulty in meeting the requirements of network solution. It's of significance to develop a quick algorithm for calculating complex wind network. The theory of network solution of circuit air-quantity method was systematically and thoroughly studied. Also, the limitation of the existing ventilation network solution was analyzed. An improved network solution based on Scott-Hinsley method was put forward. With a high convergence rate,this algorithm can solve the problems of ventilation network including unidirectional circuit and the network solution problems of complex ventilation system. BFS method was used to improve the structure of the spanning tree,and the divided circuit was faster by using Double-Access method. Achieving the fixed half cut set of air distribution in ventilation network,the algorithm can automatically distribute air according to demands. The failure cause of circuit air-quantity network solution with the unidirectional circuits was analyzed. The algorithm proposed can solve the problems of ventilation network including unidirectional circuit by modifying its search strategy. [ABSTRACT FROM AUTHOR]

Objective: To evaluate the clinical characteristics, treatment and prognosis of advanced adenoid cystic carcinoma (ACC) in the nasal cavity and paranasal sinuses., Methods: Twenty-one patients with advanced ACC in the nasal cavity and paranasal sinuses were treated in our department between February, 2007 and May, 2016. The clinical manifestations, T-stage, N-status, treatment, histological grade, recurrence and distant metastasis of the tumors were analyzed. Univariate survival analysis was performed with Kaplan-Meier method and Log-rank test, and the factors affecting the prognosis of the patients were explored using multivariate analysis with Cox proportional hazard model., Results: Among the 21 patients, 10 (47.6%) had ACC containing less than 30% of solid tumor tissues and their overall survival rates at 1, 3, and 5 years were 100%, 100% and 70%, respectively; in the 11 cases (52.4%) with solid tumor tissues no less than 30%, the overall survival rates at 1, 3, and 5 years were 70%, 40% and 10%, respectively, showing significant differences between the two groups (P=0.02). The Log-rank test and survival analysis using the covariate variable model curve indicated a significant impact of the pathological classification on the patients' prognosis. The patients in T3 stage had slightly better prognosis than those in T4 stage; tumors originating from the maxillary sinus had a slightly better prognosis than those from the sphenoid sinus. Surgery combined with radiotherapy resulted in better outcomes of the patients than surgery or radiotherapy alone. Multiariable Cox regression model analysis showed that the pathological classification (P=0.045) and the disease course (P=0.028) were closely related with the prognosis of the patients., Conclusion: ACC in the nasal cavity and paranasal sinuses has a low incidence without specific symptoms. Its early diagnosis can be difficult, and most of the patients are in advanced stage upon diagnosis. We recommend comprehensive treatments combining surgery, postoperative radiotherapy and chemotherapy for these patients. The pathological classification, disease course, lesion site, clinical stage, treatment approache, compromise of the peripheral nerves, status at the edge of resection, and postoperative radiotherapy dose can all be factors affecting the prognosis of patients with advanced ACC.

Objective: To examine the cognitive changes and outcome of mild cognitive impairment (MCI) in the elderly and to explore the predictive factors of development from MCI into dementia., Method: A cross-sectional and longitudinal parallel cohort study design was conducted among 47 patients with MCI (MCI group), aged 72.4 +/- 7.1, and 50 sex, marital status, and professional structure-matched normal controls (NC group), aged 67.9 +/- 5.3, using the Neuropsychological Battery of Cognitive Assessment Instruments developed by World Health Organization (WHO-BCAI) and the Wechsler Memory Scale (WMS) to assess the cognitive function. Follow-up was conducted for 34.0 +/- 1.8 months. The diagnosis of dementia was based on the criteria in the Diagnostic and Statistical Manual-IV., Results: Dementia was diagnosed in 13 of the 47 MCI patients with a prevalence rate of 27.7%, significantly higher than that in the NC group (2.0%, 1/50, P < 0.01). The mean total score of mini-mental status examination (MMSE) of the MCI group decreased by 2.2 +/- 3.7, significantly more than that of the NC group (1.0 +/- 1.9, P < 0.01). The mean total mental quotient (MQ) of the MCI group decreased by 12.6 +/- 17.3, significantly more than that of the NC group (3.9 +/- 8.4, P < 0.01). The values of MMSE and MQ of the 13 cases in the MCI group who developed into dementia patients decreased by 5.5 +/- 2.8 and 30.0 +/- 18.0 respectively. The WHO-BCAI assessment demonstrated that the scores of performance of verbal learning, verbal fluency, visual reasoning, trail making, sorting and spatial construct tests of the cases in the MCI group who developed into dementia patients were significantly poorer than those of the NC group (P < 0.01). Logistic analysis based on the baseline assessment suggested that the total score of MMSE and its subtest of orientation, score of orientation memory of WMS, and the scores of performance of trail making, attention, and delayed recall tested by WHO-BCAI were all statistically significant predictive factors for MCI converting into dementia (P < 0.01 or 0.05). The predictive accuracy rates of MMSE, WMS, and WHO-BCAI were 70.3%, 78.4% and 90.7% respectively., Conclusion: MCI diagnosed based on the criteria of pure MCI modified by the authors is indeed a transitional state from normal aging to dementia, especially Alzheimer's type of dementia. The cognitive change for MCI converting into dementia is characterized in the areas of orientation, attention, speech and executive function. These predictive factors for MCI to develop dementia are valuable in early detection and prevention of dementia in the elderly.