Reviews in Agricultural Science最新文献_第7页

The Use of Sediment Rating Curve under its Limitations to Estimate the Suspended Load 限制条件下泥沙等级曲线在悬移荷载估算中的应用

Reviews in Agricultural Science Pub Date : 2019-01-01 DOI: 10.7831/ras.7.0_88

D. Hapsari, T. Onishi, F. Imaizumi, K. Noda, M. Senge

{"title":"The Use of Sediment Rating Curve under its Limitations to Estimate the Suspended Load","authors":"D. Hapsari, T. Onishi, F. Imaizumi, K. Noda, M. Senge","doi":"10.7831/ras.7.0_88","DOIUrl":"https://doi.org/10.7831/ras.7.0_88","url":null,"abstract":"The suspended sediment load in river water is an important index for the soil erosion rate in the watersheds of designated rivers. Amongst the various methods for estimating the suspended sediment load, the most frequently used one is the sediment rating curve. The sediment rating curve can aid in the understanding of the relationship between the behaviour of the suspended sediment transport and the discharge flow for estimating soil erosion. However, the rating curve tends to underestimate the actual values of both the suspended sediment load and the suspended sediment concentration during high discharge and to overestimate them during low discharge. The aim of the present paper is to confirm how to use the sediment rating curve to estimate soil erosion under its limitations and benefits. The accuracy of sediment rating curve is affected by various factors, including seasons, discharge stages, catchment area, and sampling frequency. In many cases, it cannot be concluded easily that sediment rating curve is the best method to estimate suspended sediment load. At the same time, there is no other method that is simple and commonly used for the estimation of suspended sediment load, as the sediment rating curve. Efforts on the improvement of the sediment rating curve, such as data separation among the seasons and the increasing of sampling frequency, are needed for the better estimation as well as the accuracy of suspended sediment load.","PeriodicalId":37168,"journal":{"name":"Reviews in Agricultural Science","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.7831/ras.7.0_88","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71253321","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 13

Owl monkey and melatonin puzzle 猫头鹰猴子和褪黑素拼图

Reviews in Agricultural Science Pub Date : 2019-01-01 DOI: 10.7831/RAS.7.0_84

S. Kantha, J. Suzuki

引用次数: 0

Systemic Delivery of Small Interfering RNA Therapeutics: Obstacles and Advances 小干扰RNA的全身递送疗法:障碍和进展

Reviews in Agricultural Science Pub Date : 2019-01-01 DOI: 10.7831/RAS.7.10

Akash Chandela, Y. Ueno

引用次数: 6

PRODUCTION, MARKETING SYSTEM, STORAGE AND FUTURE ASPECT OF POTATO IN BANGLADESH 孟加拉国马铃薯的生产、销售体系、储存和未来展望

Reviews in Agricultural Science Pub Date : 2019-01-01 DOI: 10.7831/RAS.7.29

Utsarika Singha, S. Maezawa

{"title":"PRODUCTION, MARKETING SYSTEM, STORAGE AND FUTURE ASPECT OF POTATO IN BANGLADESH","authors":"Utsarika Singha, S. Maezawa","doi":"10.7831/RAS.7.29","DOIUrl":"https://doi.org/10.7831/RAS.7.29","url":null,"abstract":"Potato (Solanum tuberosum), is the most consumed vegetable in Bangladesh throughout the year round. Due to the suitable environment, potato production is increased day by day and in 2019 Bangladesh became the seventh largest potato producing country in the world. Now the amount of production is more than the demand and hence from recent few years Bangladesh starts to exports potato and its associated food products to the different countries in the world. Unemployment problem is very common in the developing countries like Bangladesh but potato gives an opportunity to solve the problem and also help to eradicate the situation of hunger. Though bumper harvest of potato is very common in Bangladesh but the growers are sometimes devoid of to get the fair price due to the extreme margin by the middlemen. Hence, the aim of this study is to examine the present situation of potato production, storage, marketing system, and export. The major findings of this study are as follows: Firstly, poor transportation system, inadequate storage facilities, lack of capital, lack of knowledge of farmers about market price, illiteracy, and syndicate system of middlemen are some key factors for inefficient marketing system of potato in Bangladesh. Secondly, giving the increased important in potato is not the ultimate solution, instantly improve the marketing mechanism of potato is required for Bangladesh. Finally, it is exigent that government needs to take the obligatory steps for the sustainable production and marketing system of potato in Bangladesh.","PeriodicalId":37168,"journal":{"name":"Reviews in Agricultural Science","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.7831/RAS.7.29","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71253549","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 12

Biopolymer films for food industries: properties, applications, and future aspects based on chitosan 食品工业用生物聚合物薄膜:性能、应用及基于壳聚糖的未来展望

Reviews in Agricultural Science Pub Date : 2019-01-01 DOI: 10.7831/RAS.7.0_59

Fakfan Luangapai, Methavee Peanparkdee, S. Iwamoto

引用次数: 21