我国水产品品牌战略实施现状及对策研究

水产品品牌战略是提高产品质量管理水平,促进水产品行业良性发展的有效途径,然而由于多种原因,我国水产品品牌建设一直进展较为迟缓.该研究对我国水产品品牌战略的实施状况进行研究,分析水产品品牌战略实施过程中存在的问题与障碍,在此基础上提出我国实施水产品品牌战略的方法与途径.     

Synergistic effects of soil microstructure and bacterial EPS on drying rate in emulated soil micromodels

Microbial extracellular polymeric substances (EPS) have been shown to alter soil moisture retention and to improve seedling survival and plant growth at the bulk scale. The mechanisms of EPS-mediated water retention include reversible swelling of the cross-linked polymer matrix and the promotion of an aggregated soil structure. However, the effects of EPS on water retention have never been directly observed at the pore scale. Here, emulated soil micromodels were developed to directly observe the effects of physical, chemical, and biological factors on pore-scale water retention. In this demonstration, a pseudo-2D pore structure was created to represent physical features of a fine sandy loam. Replicate micromodels were initially saturated with suspensions of different soil bacteria, and pore-scale air infiltration was directly imaged over time. External evaporativity was held constant through the use of a custom constant-humidity environmental chamber. Micromodels filled with suspensions of highly mucoid Sinorhizobium meliloti retained moisture about twice as long as physically identical micromodels filled with suspensions of non-mucoid S. meliloti. Relative drying rates in six replicate experiments ranged from 1.1 to 2.5 times slower for mucoid suspensions. Patterns of air infiltration were similar but not identical across replicates. The results suggest that pore fluid EPS and micromodel geometry act together to limit evaporation at pore throats. Advantages of the micromodel approach include direct observation of pore-scale dynamic process, and the ability to systematically replicate complex physical structures. These abilities will enable users to screen benefits from different structures and from microbial compositions, and build predictive understanding of the overall function of microbe-habitat systems.     

食用菌产品线下体验线上销售新模式应用探究

基于O2O与电子商务的理论背景,分析了线下体验线上销售模式应用于食用菌产品运营中的可行性,运用SWOT方法分析了该方法的优势、劣势、机会和威胁,构建了食用菌产品线下体验线上销售平台,并从财务成本管理的角度对该模式的成本与盈利进行了简要分析。结果表明,线下体验线上销售模式的应用会使得企业内部成本控制得到进一步优化,能降低促销成本,改变企业的分销战略,增加企业的营业外收入,降低交易成本。     

乡镇农产品质量安全监管机构建设研究

农产品质量安全关乎国计民生,近年来国家不断推出农产品质量安全监管措施.但还有许多地方政策落实不到位,乡镇农产品质量安全监督体系建设的任务还很艰巨.因此,政府要加大投入,完善机构队伍建设及强化监管能力建设,提升监督服务意识、服务质量和服务水平.     

孔雀石绿胶体金检测样品前处理工艺的优化

为建立快速筛选孔雀石绿的前处理方法,对标行标水产品中孔雀石绿的快速检测胶体金免疫层析法（KJ201701）,用于水产品中药物残留的现场快速检测使用。试验采用提取、氧化、浓缩和复溶四个步骤,对氮吹、SPE柱、反萃取三种不同提取方式进行前处理优化和比较,通过胶体金免疫层析试纸条进行检测。结果表明：三种方法均能达到同时检测水产品中孔雀石绿的目的,检测时间为反向萃取法相似文献   

畜产品中兽药残留原因及危害

在畜禽饲养管理过程中使用违禁药物或滥用药物,使用饲料添加剂或超量用药,不遵守休药期规定等均可引起畜产品兽药残留。同时饲养环境遭到污染也能致使药物残留,并且我国关于食品安全的法律法规不健全、监管力度不够等,致使畜产品中药物残留问题更加严重。人体摄入存在药物残留的食品后,不仅会引起急性、慢性或蓄积性中毒,还会致使机体细菌产生耐药性,甚至污染整个生活环境等。     

珠江三角洲地区生鲜农产品冷链网络化运输技术

文章主要是对我国的珠江三角洲地区的生鲜农产品冷链的物流方式进行探究,结合现在我国的生鲜农产品冷链运输技术的现状和发展前景进行大胆的预测,并提出我国的珠江三角洲地区的生鲜农产品冷链的运输技术的网络化的建议。     

基于低碳与成本约束的机电产品包装概念设计

机电产品的包装需要耗费大量的原木,对环境造成了极大的影响,也增加了机电产品的生产经营成本。文章从低碳和成本约束的角度,对机电产品包装概念设计的模型进行了分析和探讨。     

Effects of smoke,ash and heat shock on seed germination of seven species from Central Zagros rangelands in the semi-arid region of Iran

Fire products have been widely identified as germination cues for a number of species from both fire-prone and fire-free ecosystems. However, there is uncertainty about the effects of fire products on seed germination of semi-arid rangeland species. We examined the germination of seven dominant species from Central Zagros rangelands in the semi-arid region of Iran under various heat shock (60, 80 and 120 °C), aerosol smoke, ash and control treatments. Our findings showed that fire products could enhance, inhibit or not affect the seed germination of rangeland species in this area. The germination percentage of Astragalus adscendens increased following 60 °C heat treatment in comparison with the control. The germination of Astragalus verus, Bromus tectorum, B. tomentellus and Phlomis olivieri were increased significantly using smoke treatment (P<0.0001). The seed germination of B. tomentellus and B. tectorum was promoted by ash treatment, whereas the other species exhibited no response or were inhibited by fire products. In addition, smoke treatment shortened the overall germination time of B. tectorum. These findings suggest that fire products affect the germination of several species and can serve as potential tools for understanding the vegetation dynamics and restoration of disturbed semi-arid rangelands.     

Detection of bacterial contamination and DNA quantification in stored blood units in 2 veterinary hospital blood banks

Blood transfusions in veterinary medicine have become increasingly more common and are now an integral part of lifesaving and advanced treatment in small and large animals. Important risks associated with transfusion of blood products include the transmission of various infectious diseases. Several guidelines suggest what infectious agents to screen for in canine and feline transfusion medicine. However, while the risk of bacterial contamination of blood products during storage and administration has not been documented in veterinary medicine, it has emerged as a cause of morbidity and mortality in human transfusion medicine. Clinical experience shows that the majority of blood component bacterial contaminations are caused by only a few species. Unlike other types of bacteria, psychrotolerant species like Pseudomonas spp. and Serratia spp. can proliferate during the storage of blood units at 4°C from a very low titer at the time of blood collection to a clinically significant level (> 10⁵ CFU/mL) causing clinical sepsis resulting from red blood cell concentrate transfusions in human medicine. The purpose of this report was to describe the detection and quantification procedures applied in 4 cases of bacterial contamination of canine and feline blood units, which suggest the need for further investigations to optimize patients’ safety in veterinary transfusion medicine.