Post-disaster damage classification based on deep multi-view image fusion

This study aims to facilitate a more reliable automated postdisaster assessment of damaged buildings based on the use of multiple view imagery. Toward this, a Multi-View Convolutional Neural Network (MV-CNN) architecture is proposed, which combines the information from different views of a damaged building, resulting in 3-D aggregation of the 2-D damage features from each view. This spatial 3-D context damage information will result in more accurate and reliable damage quantification in the affected buildings. For validation, the presented model is trained and tested on a real-world visual data set of expert-labeled buildings following Hurricane Harvey. The developed model demonstrates an accuracy of 65% in predicting the exact damage states of buildings, and around 81% considering ±1 class deviation from ground-truth, based on a five-level damage scale. Value of information (VOI) analysis reveals that the hybrid models, which consider at least one aerial and ground view, perform better.     

Effect of rice bran crude lecithin blended diet on rumen ecology,metabolic profile,and milk fat indices affecting human health

Two experiments are conducted to find out the effect of rice bran crude lecithin on rumen ecology, milk fat quality, metabolic indices, and leptin (LEP) gene expression. In first experiment, 12 crossbred calves are randomly divided into two groups, that is, RBCL-0 and RBCL-6, and they are fed wheat straw based diet with concentrate mixture containing 0% RBCL (CM1) and 6% RBCL (CM2), respectively, for 120 d for rumen fermentation study. Ruminal ammonia-N and short chain fatty acids and rumen microbes are nonsignificantly affected in RBCL calves. In second experiment, 12 lactating cows are randomly divided into RBCL-0 and RBCL-6 groups and fed CM1 and CM2 concentrate along with napier grass as roughage. In milk fatty acid profile, C16:1 fatty acid is significantly lower while cis-C18:1 is significantly higher in the RBCL supplemented cows. The atherogenic index and thrombogenic index are 16 and 19% lower while health promoting index, polyunsaturated saturated fatty acids, and hypocholesterolaemic/hypercholesterolaemic are 16, 10, and 16, respectively, higher in RBCL-6 cows. The mean nonesterified fatty acid and β-hydroxy butyric acid value is lower while LEP gene expression is higher in RBCL supplemented cows than control cows. The milk income is higher in RBCL cows. Finally, it can be concluded that RBCL at 6% in concentrate mixture of dairy ration do not adversely affect the rumen ecology. Although RBCL has capacity to enhance health properties of milk fat along with profitability, still more studies are warranted. Practical applications: Cow milk has always been an important component of the human diet in the world. The milk composition, especially fat, is directly influenced by feeding regime in dairy animals. In the milk fat, the unsaturated fatty acids (mainly polyunsaturated fatty acids) help in improving the health condition of consumers along with the keeping quality of milk. In this series, rice bran crude lecithin was used in the dairy ration and found that it altered certain metabolic parameters and gene expression, which may be beneficial for animal health without altering rumen fermentation. Although RBCL substantially modify the milk fatty acid profile and improves the fat indices which will enhance the human health by protecting them from cardiovascular diseases.     

磁流变弹性体的性能研究

以天然橡胶为基体制备磁流变弹性体（MRE），研究MRE的Payne效应及磁感应强度和磁流变效应。电子显微镜分析得出，对于羰基铁粉质量分数最大（81.67%）的MRE，羰基铁粉分布密集，出现羰基铁粉团聚现象。流变仪测试结果表明：随着羰基铁粉质量分数的增大，MRE的Payne效应和磁流变效应增强；随着应变的增大，MRE的储能模量减小，损耗因子增大。     

The effect of lubricant additives on friction and wear studies of polyphenylene sulphide

Polyphenylene sulphide is a polymer with good thermal stability and high crystallinity. This paper summarizes the results of friction and wear studies of polyphenylene sulphide and its composites made with conventional solid lubricants to ascertain the suitability of the material as a matrix for solid lubricant additives. The polymer itself has a high coefficient of friction. Wear rate increases with load and speed. Addition of solid lubricant additives helps in improving the friction and wear of the polymer. Composites with MoS₂-Sb₂O₃ and PTFE gave better results than composites made by the addition of graphite and MoS₂ graphite. Wear rate of these composites increased with load and speed; but load and speed had little effect on friction.     

Influence of abrading particle size on the wear performance of various polyamides

Various polyamides (PAs) containing different CONH₂/CH₂ ratios were selected for abrasive wear studies. Eleven types of silicon carbide (SiC) papers varying in particle size (10–175 μm) were selected as abrading counterfaces. The wear performance under single‐pass conditions indicated that the selected PAs did not show a size effect, in contrast to the case of metals and some other polymers. Wear rates were of the order of 2–17 × 10⁻¹¹ m³/Nm. Scanning electron micrographs of some of the worn papers indicated correlations between wear and the size and number of wear debris particles and the amount of material transferred to the papers.     

Architecture- and Gate-Oxide-Level Optimization of a Si-Based Asymmetric U-TFET for Low Power Operation: a Real-Time Gate/Drain Electrostatic Based Leakage Perspective

Silicon - In this paper, for the first time, an optimized asymmetric U-shaped TFET, suitable for low power application, has been proposed after a hardcore performance analysis, considering the...