[Objective] Through the investigation of weeds in Coffea arabica orchads in NuJiang River basin, this study aimed to provide scientific guidance for the weed control and improving the ecological and economic benefits ...[Objective] Through the investigation of weeds in Coffea arabica orchads in NuJiang River basin, this study aimed to provide scientific guidance for the weed control and improving the ecological and economic benefits of the plantation of Cof- fea arabica. [Method] The types of weeds and the characteristics of weed occur- rence in Coffea arabica orchads in Nujiang River basin were investigated from July to August in 2012. [Result] The results showed that there were 69 types of weeds belonging to 21 families in Coffea arabica orchads. The predominant harmful types were shown as follows： Commelina nudiflora L. ＋ Leptochloa chinensis, Cyperus ro- tundus L. ＋ Bidens pilosa L. ＋ Eleusine indica, Imperata cylindrical ＋ Ageratum conyzoides L. ＋ Eupatorium odoratum L., Ageratum conyzoides L. ＋ Digitaria san- guinalis （L.） Scop. The preponderant weeds consisted mainly of 10 species, namely, Cyperus rotundus L., Commelina nudiflora L., Leptochloa chinensis, Digitaria san- guinalis （L.） Scop, Imperata cylindrical, Bidens pilosa L., Ageratum conyzoides L, E- upatorium odoratum L., Eleusine indica and Chenopodium serotinum L. [Conclusion] The result from this study is of great significance for the plantation of Coffea arabica in Nujiang River basin, as well as the control of weeds.展开更多
目的对一例患儿的节段型咖啡斑进行鉴定,明确其为单纯色素沉着斑或节段型1型神经纤维瘤病(neurofibromatosis type 1,NF1)。方法对患儿咖啡斑皮损中的3种培养细胞(黑素细胞、角质形成细胞和成纤维细胞)进行体细胞变异分析,探讨是否存在...目的对一例患儿的节段型咖啡斑进行鉴定,明确其为单纯色素沉着斑或节段型1型神经纤维瘤病(neurofibromatosis type 1,NF1)。方法对患儿咖啡斑皮损中的3种培养细胞(黑素细胞、角质形成细胞和成纤维细胞)进行体细胞变异分析,探讨是否存在镶嵌现象。结果二代测序仅在黑色素细胞中发现了NF1基因的两个杂合性无义致病性变异c.3826C>T(p.R1276*)和c.6709 C>T(p.R2237*)。二者已被HGMD数据库收录。深度测序发现血液中c.3826C>T变异的比例为10.4%。结论通过体细胞变异分析发现NF1基因镶嵌致病性变异,明确诊断1例节段型咖啡斑表现的散发儿童节段型NF1患者,为判断患者的预后、精准治疗以及产前诊断奠定了基础。展开更多
Tbio is a start-up created to give support to commercialize the products of the biofactory installed in the Federal University of Lavras, Minas Gerais State, Brazil, part of the Innovation Program developed by this Un...Tbio is a start-up created to give support to commercialize the products of the biofactory installed in the Federal University of Lavras, Minas Gerais State, Brazil, part of the Innovation Program developed by this University. Its specialty is to innovate, through biological solutions with the vision of the future, once there is a strong demand of food and beverages free of chemical residues and with lower employing of these substances along the production chain by several consumers. The innovative products are generated from microorganisms tested regarding its capacity to promote yield protection, pests and disease control, acceleration of the desmucilage waste water treatment, and improvement of process of faster solubilization, that depends on natural phosphate fertilizers. The goal of this article is to approach the activities that have been developed in this start-up and the knowledge about biocontrol and natural antimicrobials produced by fungi resulting in innovative products to attend the world claim for products free of chemical residues of any kind and harmless to the consumers, environment and workers.展开更多
This paper reports the practicability of using coffee residues to remove widely used basic dyes like MB （Methylene Blue） from wastewaters. The effect of different batch system parameters, namely stirring speed, pH, ...This paper reports the practicability of using coffee residues to remove widely used basic dyes like MB （Methylene Blue） from wastewaters. The effect of different batch system parameters, namely stirring speed, pH, initial dye concentration and contact time were studied. Moreover, in continuous fixed-bed column systems, the effects of parameters such as bed-depth, flow rate and initial dye concentration were examined. The experimental batch systems data were simulated using （a） Freundlich, Langmuir and Sips isotherm models and （b） 1st order, 2nd order, and intra-particle kinetic models. The results revealed that the MB is fairly adsorbed on coffee residues. This process could be a low cost technique for the removal of basic dyes from aqueous systems.展开更多
Ethiopian coffee price is highly fluctuated and has significant effect on the economy of the country. Conducting a research on forecasting coffee price has theoretical and practical importance.This study aims at forec...Ethiopian coffee price is highly fluctuated and has significant effect on the economy of the country. Conducting a research on forecasting coffee price has theoretical and practical importance.This study aims at forecasting the coffee price in Ethiopia. We used daily closed price data of Ethiopian coffee recorded in the period 25 June 2008 to 5 January 2017 obtained from Ethiopia commodity exchange（ECX） market to analyse coffee prices fluctuation. Here, the nature of coffee price is non-stationary and we apply the Kalman filtering algorithm on a single linear state space model to estimate and forecast an optimal value of coffee price. The performance of the algorithm for estimating and forecasting the coffee price is evaluated by using root mean square error（RMSE）. Based on the linear state space model and the Kalman filtering algorithm, the root mean square error（RMSE） is 0.000016375, which is small enough, and it indicates that the algorithm performs well.展开更多
基金Supported by the Special Fund for Agro-scientific Research in the Public Interest,China(200903024-02)~~
文摘[Objective] Through the investigation of weeds in Coffea arabica orchads in NuJiang River basin, this study aimed to provide scientific guidance for the weed control and improving the ecological and economic benefits of the plantation of Cof- fea arabica. [Method] The types of weeds and the characteristics of weed occur- rence in Coffea arabica orchads in Nujiang River basin were investigated from July to August in 2012. [Result] The results showed that there were 69 types of weeds belonging to 21 families in Coffea arabica orchads. The predominant harmful types were shown as follows： Commelina nudiflora L. ＋ Leptochloa chinensis, Cyperus ro- tundus L. ＋ Bidens pilosa L. ＋ Eleusine indica, Imperata cylindrical ＋ Ageratum conyzoides L. ＋ Eupatorium odoratum L., Ageratum conyzoides L. ＋ Digitaria san- guinalis （L.） Scop. The preponderant weeds consisted mainly of 10 species, namely, Cyperus rotundus L., Commelina nudiflora L., Leptochloa chinensis, Digitaria san- guinalis （L.） Scop, Imperata cylindrical, Bidens pilosa L., Ageratum conyzoides L, E- upatorium odoratum L., Eleusine indica and Chenopodium serotinum L. [Conclusion] The result from this study is of great significance for the plantation of Coffea arabica in Nujiang River basin, as well as the control of weeds.
文摘目的对一例患儿的节段型咖啡斑进行鉴定,明确其为单纯色素沉着斑或节段型1型神经纤维瘤病(neurofibromatosis type 1,NF1)。方法对患儿咖啡斑皮损中的3种培养细胞(黑素细胞、角质形成细胞和成纤维细胞)进行体细胞变异分析,探讨是否存在镶嵌现象。结果二代测序仅在黑色素细胞中发现了NF1基因的两个杂合性无义致病性变异c.3826C>T(p.R1276*)和c.6709 C>T(p.R2237*)。二者已被HGMD数据库收录。深度测序发现血液中c.3826C>T变异的比例为10.4%。结论通过体细胞变异分析发现NF1基因镶嵌致病性变异,明确诊断1例节段型咖啡斑表现的散发儿童节段型NF1患者,为判断患者的预后、精准治疗以及产前诊断奠定了基础。
文摘Tbio is a start-up created to give support to commercialize the products of the biofactory installed in the Federal University of Lavras, Minas Gerais State, Brazil, part of the Innovation Program developed by this University. Its specialty is to innovate, through biological solutions with the vision of the future, once there is a strong demand of food and beverages free of chemical residues and with lower employing of these substances along the production chain by several consumers. The innovative products are generated from microorganisms tested regarding its capacity to promote yield protection, pests and disease control, acceleration of the desmucilage waste water treatment, and improvement of process of faster solubilization, that depends on natural phosphate fertilizers. The goal of this article is to approach the activities that have been developed in this start-up and the knowledge about biocontrol and natural antimicrobials produced by fungi resulting in innovative products to attend the world claim for products free of chemical residues of any kind and harmless to the consumers, environment and workers.
文摘This paper reports the practicability of using coffee residues to remove widely used basic dyes like MB （Methylene Blue） from wastewaters. The effect of different batch system parameters, namely stirring speed, pH, initial dye concentration and contact time were studied. Moreover, in continuous fixed-bed column systems, the effects of parameters such as bed-depth, flow rate and initial dye concentration were examined. The experimental batch systems data were simulated using （a） Freundlich, Langmuir and Sips isotherm models and （b） 1st order, 2nd order, and intra-particle kinetic models. The results revealed that the MB is fairly adsorbed on coffee residues. This process could be a low cost technique for the removal of basic dyes from aqueous systems.
文摘Ethiopian coffee price is highly fluctuated and has significant effect on the economy of the country. Conducting a research on forecasting coffee price has theoretical and practical importance.This study aims at forecasting the coffee price in Ethiopia. We used daily closed price data of Ethiopian coffee recorded in the period 25 June 2008 to 5 January 2017 obtained from Ethiopia commodity exchange（ECX） market to analyse coffee prices fluctuation. Here, the nature of coffee price is non-stationary and we apply the Kalman filtering algorithm on a single linear state space model to estimate and forecast an optimal value of coffee price. The performance of the algorithm for estimating and forecasting the coffee price is evaluated by using root mean square error（RMSE）. Based on the linear state space model and the Kalman filtering algorithm, the root mean square error（RMSE） is 0.000016375, which is small enough, and it indicates that the algorithm performs well.
