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Climate Trends and Their Impact on Sorghum Production in Marigat, Baringo County: A Historical Analysis

Open Journal of Modern Hydrology 2024年第2期14卷 106-129页

作者： Kennedy O. Okuku Japheth O. Onyando Romulus O. Okwany Clement K. Kiptum Department of Agricultural Engineering Egerton University Nakuru Kenya School of Engineering University of Eldoret Eldoret Kenya

Climate is subject to fluctuations in the majority of the world, mainly caused by rainfall as well as temperature variations. Climate fluctuations in Kenya have resulted in the spread of desert-like conditions in the ASALs region, such as Marigat in Baringo County. As a county, Baringo experiences great variations in climate annually, as well as uncertainty in expected rains, thereby negatively impacting the production of crops such as sorghum. This study applied the rainfall anomaly index (rai), standardised precipitation evapotranspiration index (SPEI), standard precipitation index (SPI), and Mann-Kendall (MK) statistical test for trends on historical climatic data in analysing both temperature and precipitation data over the period 1990 to 2022 to determine their trend, patterns and how they affect the production of sorghum crops. The machine learning method (R studio) with inputs was used to calculate the SPI, SPEI, rai and MK trend test. The rainfall varied from below average to above average during the study period with no clear pattern in the rai, SPEI and SPI values. The years 2020 and 2000 stood out as they had higher and lower rainfall than usual, respectively. The Marigat area generally experienced more rainfall during the high/long rainfall season (AMJJ). The MK trend test on average monthly rainfall, SOND, AMJJ, and annual precipitation confirmed a positive trend in precipitation. However, the short rainy season (SOND) was found to be the most variable period for rainfall, and there was a slight increase in daily average temperatures during this season.

关键词： Trends Precipitation Temperature rai SPI SPEI and MK

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南自所申建WMOraiI区域水文测报培训中心获批

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水利信息化 2024年第3期 59-59页

作者：《水利信息化》编辑部《水利信息化》编辑部

2024年6月10—14日,世界气象组织(WMO)第78届执行理事会在瑞士日内瓦召开,大会审议通过了水利部南京水利水文自动化研究所(简称南自所)与扬州大学联合申建的WMO raiI区域水文测报培训中心(RTC)。该中心正式成为WMO指定的中国地区第1个... 详细信息

2024年6月10—14日,世界气象组织(WMO)第78届执行理事会在瑞士日内瓦召开,大会审议通过了水利部南京水利水文自动化研究所(简称南自所)与扬州大学联合申建的WMO raiI区域水文测报培训中心(RTC)。该中心正式成为WMO指定的中国地区第1个水文区域培训中心,将在提升会员国水文气象服务能力和促进国际合作方面发挥重要作用。

关键词：世界气象组织水文测报培训中心执行理事会瑞士日内瓦扬州大学 rai WMO

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Research progress on advanced rail materials for electromagnetic railgun technology

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Defence Technology（防务技术） 2021年第2期17卷 429-439页

作者： Hong-bin Xie Hui-ya Yang Jian Yu Ming-yu Gao Jian-dong Shou You-tong Fang Jia-bin Liu Hong-tao Wang School of Materials Science and Engineering Zhejiang UniversityHangzhou310027China Center for X-mechanics Faculty of EngineeringZhejiang UniversityHangzhou310027China

Electromagnetic railgun attracts more and more attention due to its advantage in speed,cost,and obscurity.It is found that the rail should withstand huge mechanical and thermal shocks during the launching operation.The forms of rail failure are accompanied by gouge,grooving,transition,and arc ablation,etc.The service life of the rail has become a bottleneck restricting the development of electromagnetic railgun technology.A series of researches are carried out to solve rail failure,including analysing the failure mechanism and using various advanced rail materials.This paper provides a comprehensive review of rail materials,including material composition,preparation,microstructure,and properties.We begin from a short background of the requirement of the rail material.Then a detailed investigation of rail materials is described,and the performances of those materials are introduced.Finally,further development prospect of rail material is discussed.

关键词： Strength Conductivity Electromagnetic railgun Copper alloys rai

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Xinxiang Chemical Gained Profit in 2009

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China Chemical Reporter 2010年第7期21卷 6-6页

Xinxiang Chemical Fiber Co., Ltd. (SZ:000949) said 2009 sales rose 18.83% year-on-year to RMB2.4 billion. And the profit was RMB99.62 million, reversing a year-agoloss. The viscose fiber market both at home and abroad remained weak in the beginning of 2009, which affected the operation of the company. The market bounced back since the second quarter with rebounding prices for viscose staple and spandex fiber, helping the company’s earnings.

关键词： quarter prices profit helping beginning shares rai

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Estimation of Land Use Changes in Tan rai Bauxite Mine by Multi-Variants Change Vector Analysis (MCVA) on Multi-Temporal Remote Sensing Data

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Journal of Geoscience and Environment Protection 2020年第3期8卷 70-84页

作者： Nguyen Thanh Hoan Hoa Thuy Quynh Le Minh Hang Nguyen Manh Ha Hoang Thi Huyen Ngoc Dang Xuan Phong Institute of Geography Vietnam Academy of Science and Technology Hanoi Vietnam Graduate University of Science and Technology Vietnam Academy of Science and Technology Hanoi Vietnam Le Quy Don Technical University Hanoi Vietnam

The Tan rai Bauxite Project, which exploits a large bauxite mine in Lam Dong province, Vietnam has been in operation since 2012. In addition to the economic efficiency of the project, bauxite mining and processing uses a large area arable land and affect the regional environment. Remote sensing technology is increasingly widely used in many purposes in monitoring the changes of environment and resources, including land use change with high accuracy, giving managers more information to monitor the exploitation and use process of land resource. This study used a Change Vector Analysis (CVA) method of analysis on various remote sensing data sources to monitor the process of land exploitation and restoration of the Tan rai Bauxite project. High-resolution remote sensing images were used as diverse as SPOT-5, VNREDSat-1, Google Earth from 2013 to 2019 to demonstrate the ability of the MCVA method to combine many other types of remote sensing images together. The results of fluctuation analysis were validated by 200 random points in the study area, and the accuracy of result is more than 90%. The results of land use change statistics were also compared with the annual data of Tan rai Bauxite Factory. From this study, it can be concluded that the MCVA analysis method can quickly detect land use change areas and can combine many different image sources with a high accuracy. In addition, it also provides statistics of mining areas and restored areas, thereby assisting managers in monitoring the operation of the mine.

关键词： Bauxite Tan rai MCVA Land Use Change Monitoring Multi-Sensors

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China raised Oil Products Prices

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China Chemical Reporter 2009年第10期20卷 15-15页

China’s National Development and Reform Commission(NDRC)reformed the oil-products pricing mechanism and issued on December5th,2008 the new one,which is effective on January 1st,2009.According to the new pricing mechanism,the NDRC raisedthe permitted maximum prices of gasoline and diesel by RMB290and RMB 180 per ton respectively,effective March 25th.Pricesfor other oil products have also been adjusted accordingly.

关键词： gasoline prices pricing diesel adjusted issued rai

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A New Method for the Non-destructive Determination of Fish Freshness by Nuclear Imaging

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Journal of Ocean University of China 2005年第3期4卷 240-243页

作者： LIU Zhongdong LI Zhenxing LIN Hong DONG Caiwen College of Food Science Zhengzhou Institute of Technology Zhengzhou 450052 P.R. China College of Chemistry and Engineering Xiamen University Xiamen 361005 P.R. China College of Food Science and Engineering Ocean University of China Qingdao 266003 P. R. China Wuhan Branch Chinese Academy of Sciences Wuhan 430072 P.R. China

A new method for determining the freshness of harvested carp using nuclear imaging technology is presented.This research attempted to determine the freshness of carp by measuring the radioactive area increase (rai) value of fish.The carp samples were maintained under refrigerated condition for 12d, and rai and total volatile base nitrogen (T-VBN)values were determined during the storage. The results showed that the rai value increased with the T-VBN content duringthe storage. Also, there is a significant correlation between T-VBN content and rai value of the carp kept in refrigeratedcondition. The results of this study suggest that the rai value could be utilized to evaluate rapidly the freshness of carp.

关键词：淡水鱼类放射性 rai 感官评价非破坏性安全性

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“资源诅咒”效应及其在区域发展中的作用

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经济学动态 2012年第4期 84-88页

作者：齐义军付桂军内蒙古师范大学经济学院邮政编码010022 内蒙古师范大学马克思主义学院邮政编码010022

本文在对国内外资源诅咒理论研究进行梳理的基础上,从可持续发展视角重新界定了资源诅咒,认为避免资源诅咒的最好选择是走可持续发展之路,在促进经济良性发展的同时,促进经济、资源、环境和社会可持续协调发展。

关键词：可持续发展资源诅咒 rai 民生

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重症急性胰腺炎区域动脉灌注的序贯治疗选择

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中华肝胆外科杂志 2010年第6期16卷 469-470页

作者：周蒙滔张启瑜孙洪伟金约朋宋其同施红旗徐正铿温州医学院附属第一医院肝胆胰外科浙江325000

自武田和宪报告区域动脉灌注（rai）治疗急性坏死性胰腺炎至今已历经16年[1],目前rai作为治疗重症急性胰腺炎（SAP）的一种增效非手术方法正逐渐被胰腺外科所接受.

关键词：重症急性胰腺炎区域动脉灌注序贯治疗急性坏死性胰腺炎非手术方法胰腺外科 rai

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A Word from Contributing Editor-in-Chief——Special Issue for Relay Protection Technology Forum 2014

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Electricity 2014年第5期25卷 5-6页

作者：周泽昕

At present,security of energy resources has been raising concerns widely as the development of new energy and technologies are bringing forth unprecedented opportunities as well as challenges for the power industries.Being the safeguard at the front line for the safety operation of power system,power system relay protection are experiencing rapid technology upgrade and constant innovations with grave responsi-

关键词： safeguard unprecedented bringing relay upgrade rai

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