Pub Date : 2015-06-01DOI: 10.1016/S1006-8104(15)30031-3
Li Yan-fei , Liu Jian-yu , Cao Zheng
Abstract
To investigate the effects of aluminum (Al) exposure on renal structure of rats, 60 Wistar rats were randomly divided into four treatment groups and were orally exposed to 0 (control group, GC), 64.18 (low-dose group, GL), 128.36 (middle-dose group, GM), and 256.72 (high-dose group, GH) mg • kg−1 BW AlCl3 in drinking water for 120 days. The body weight of different rats was recorded, the kidney pathologic structure and the ultrastructure were observed. The results showed that the body weight of different rats was markedly lower in Al-treated rats than those in GC (P<0.05; P<0.01). After masson staining, the collagen was deposited in the renal interstitium and aggravated with Al dose increases in Al-treated rats. Under electron microscope, the infolding of the plasma membrane was slight swollen, the mitochondrion was abundant with different sizes, the mitochondrion cristae was fused, the microvillus was swollen and fused in GH. Our findings indicated that sub-chronic Al exposure slowed the weight of rats and caused the kidney pathologic damage in rats.
{"title":"Effects of Sub-chronic Aluminum Exposure on Renal Structure in Rats","authors":"Li Yan-fei , Liu Jian-yu , Cao Zheng","doi":"10.1016/S1006-8104(15)30031-3","DOIUrl":"10.1016/S1006-8104(15)30031-3","url":null,"abstract":"<div><h3>Abstract</h3><p>To investigate the effects of aluminum (Al) exposure on renal structure of rats, 60 Wistar rats were randomly divided into four treatment groups and were orally exposed to 0 (control group, GC), 64.18 (low-dose group, GL), 128.36 (middle-dose group, GM), and 256.72 (high-dose group, GH) mg • kg<sup>−1</sup> BW AlCl<sub>3</sub> in drinking water for 120 days. The body weight of different rats was recorded, the kidney pathologic structure and the ultrastructure were observed. The results showed that the body weight of different rats was markedly lower in Al-treated rats than those in GC (<em>P</em><0.05; <em>P</em><0.01). After masson staining, the collagen was deposited in the renal interstitium and aggravated with Al dose increases in Al-treated rats. Under electron microscope, the infolding of the plasma membrane was slight swollen, the mitochondrion was abundant with different sizes, the mitochondrion cristae was fused, the microvillus was swollen and fused in GH. Our findings indicated that sub-chronic Al exposure slowed the weight of rats and caused the kidney pathologic damage in rats.</p></div>","PeriodicalId":58038,"journal":{"name":"Journal of Northeast Agricultural UniversityEnglish Edition","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2015-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1006-8104(15)30031-3","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"56332798","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}
Pub Date : 2015-06-01DOI: 10.1016/S1006-8104(15)30034-9
Fang Jun-long, Xing Yu, Fu Yu, Xu Yang, Liu Guo-liang
Abstract
Power load forecasting accuracy related to the development of the power system. There were so many factors influencing the power load, but their effects were not the same and what factors played a leading role could not be determined empirically. Based on the analysis of the principal component, the paper forecasted the demands of power load with the method of the multivariate linear regression model prediction. Took the rural power grid load for example, the paper analyzed the impacts of different factors on power load, selected the forecast methods which were appropriate for using in this area, forecasted its 2014–2018 electricity load, and provided a reliable basis for grid planning.
{"title":"Rural Power System Load Forecast Based on Principal Component Analysis","authors":"Fang Jun-long, Xing Yu, Fu Yu, Xu Yang, Liu Guo-liang","doi":"10.1016/S1006-8104(15)30034-9","DOIUrl":"10.1016/S1006-8104(15)30034-9","url":null,"abstract":"<div><h3>Abstract</h3><p>Power load forecasting accuracy related to the development of the power system. There were so many factors influencing the power load, but their effects were not the same and what factors played a leading role could not be determined empirically. Based on the analysis of the principal component, the paper forecasted the demands of power load with the method of the multivariate linear regression model prediction. Took the rural power grid load for example, the paper analyzed the impacts of different factors on power load, selected the forecast methods which were appropriate for using in this area, forecasted its 2014–2018 electricity load, and provided a reliable basis for grid planning.</p></div>","PeriodicalId":58038,"journal":{"name":"Journal of Northeast Agricultural UniversityEnglish Edition","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2015-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1006-8104(15)30034-9","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"56332833","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}
Pub Date : 2015-06-01DOI: 10.1016/S1006-8104(15)30026-X
Jin Zhe, Huang Jian-ping, Wang He-meng, Ju Han-xun, Ren Si-rui, Chang Ying
Abstract
To improve the purity of the total phloroglucinols from Dryopteris crassirhizoma extracts, the separation and purification conditions of the total phloroglucinols from Dryopteris crassirhizoma were studied with DM-130 macroporous adsorption resin in this study. Adsorption rate, elution rate and purity of the total phloroglucinols were used as indexes to investigate the adsorption and desorption capacity of the total phloroglucinols with DM-130 macroporous adsorption resin. Through the study, the optimum sample concentration of the total phloroglucinols and maximum sample volume were 1.5 mg • mL−1 and 7 BV (210 mL), respectively. The optimum desorption conditions were achieved by using 80% ethanol as desorption solvent at elution flow rate of 1.0 mL • min−1. The result showed DM-130 macroporous adsorption resin performed effective adsorption and desorption. After purification, the purity of the total phloroglucinols increased by 11.5-fold.
{"title":"Separation and Purification of Total Phloroglucinols in Dryopteris crassirhizoma with DM-130 Macroporous Adsorption Resin","authors":"Jin Zhe, Huang Jian-ping, Wang He-meng, Ju Han-xun, Ren Si-rui, Chang Ying","doi":"10.1016/S1006-8104(15)30026-X","DOIUrl":"10.1016/S1006-8104(15)30026-X","url":null,"abstract":"<div><h3>Abstract</h3><p>To improve the purity of the total phloroglucinols from <em>Dryopteris crassirhizoma</em> extracts, the separation and purification conditions of the total phloroglucinols from <em>Dryopteris crassirhizoma</em> were studied with DM-130 macroporous adsorption resin in this study. Adsorption rate, elution rate and purity of the total phloroglucinols were used as indexes to investigate the adsorption and desorption capacity of the total phloroglucinols with DM-130 macroporous adsorption resin. Through the study, the optimum sample concentration of the total phloroglucinols and maximum sample volume were 1.5 mg • mL<sup>−1</sup> and 7 BV (210 mL), respectively. The optimum desorption conditions were achieved by using 80% ethanol as desorption solvent at elution flow rate of 1.0 mL • min<sup>−1</sup>. The result showed DM-130 macroporous adsorption resin performed effective adsorption and desorption. After purification, the purity of the total phloroglucinols increased by 11.5-fold.</p></div>","PeriodicalId":58038,"journal":{"name":"Journal of Northeast Agricultural UniversityEnglish Edition","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2015-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1006-8104(15)30026-X","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"56332737","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}
Pub Date : 2015-06-01DOI: 10.1016/S1006-8104(15)30036-2
Muhammad Abdullah , Jia Li , Sidra Ghazanfar , Jaleel Ahmed , Imran Khan , Mazhir Nadeem Ishaq
Abstract
Under the umbrella of WTO, the reduction in trade barriers has forced the policy makers to focus on the export competitiveness. Rice is an important source for foreign exchange earnings for the economy of Pakistan, keeping in mind of this fact, the competitiveness of Pakistan's rice with other major exporters was examined by applying revealed competitive advantage. The domestic consumption trends of rice among the major rice exporting countries were also analyzed in the current study. The results revealed that as compare to other major exporters of rice in the world, Pakistan had high competitive and comparative advantage in the production of rice. The comparison of the movements in comparative advantage indices for Pakistan with the major world rice competitors/exporters showed that Pakistan possessed relatively high comparative and competitive advantages in rice production. The declining domestic per capita consumption of rice and increasing trends in competitiveness for Pakistan clearly revealed the expected potential of higher growth which meant that rice exports from Pakistan could continue to play an important role for the earnings of foreign exchange. In order to exploit the potential benefits of rice exports, we need to strengthen the competitiveness in rice sector of Pakistan.
{"title":"Where Pakistan Stands Among Top Rice Exporting Countries, an Analysis of Competitiveness","authors":"Muhammad Abdullah , Jia Li , Sidra Ghazanfar , Jaleel Ahmed , Imran Khan , Mazhir Nadeem Ishaq","doi":"10.1016/S1006-8104(15)30036-2","DOIUrl":"10.1016/S1006-8104(15)30036-2","url":null,"abstract":"<div><h3>Abstract</h3><p>Under the umbrella of WTO, the reduction in trade barriers has forced the policy makers to focus on the export competitiveness. Rice is an important source for foreign exchange earnings for the economy of Pakistan, keeping in mind of this fact, the competitiveness of Pakistan's rice with other major exporters was examined by applying revealed competitive advantage. The domestic consumption trends of rice among the major rice exporting countries were also analyzed in the current study. The results revealed that as compare to other major exporters of rice in the world, Pakistan had high competitive and comparative advantage in the production of rice. The comparison of the movements in comparative advantage indices for Pakistan with the major world rice competitors/exporters showed that Pakistan possessed relatively high comparative and competitive advantages in rice production. The declining domestic per capita consumption of rice and increasing trends in competitiveness for Pakistan clearly revealed the expected potential of higher growth which meant that rice exports from Pakistan could continue to play an important role for the earnings of foreign exchange. In order to exploit the potential benefits of rice exports, we need to strengthen the competitiveness in rice sector of Pakistan.</p></div>","PeriodicalId":58038,"journal":{"name":"Journal of Northeast Agricultural UniversityEnglish Edition","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2015-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1006-8104(15)30036-2","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"56332852","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}
Pub Date : 2015-06-01DOI: 10.1016/S1006-8104(15)30032-5
Muhammad Saleem Khan , Muhammad Saleem Asghar , Iram Maqsood , Mohsin Bukhari , Lemeng Han , Tang Li-jie , Li Yi-jing , A Shahla , U R Khalil
Abstract
The current experiment was conducted to find out the optimal conditions for mass rearing and developmental changes of Cyclosainsulana. The lab. conditions were maintained at (27±2)°C and (65±5)% RH. The clear perplex cages and natural diet consisting of the aphids, larvae of the house fly and larvae of drosophila were used for rearing. C. insulana took (123.12±7.26) days to develop from eggs to adults passing through eight instars under prevailing vivo conditions. The eggs were greenish white in color with average size of 0.57 mm ±0.034. The eggs spent (7.52±1.64) days in emergence. Maximum number of spiderlings survived at the 5th instar (84%) and minimum at the 1st instar (34%). The measurements of different body parts including the total body length, cephalothorax and pedipalps of the both male and female C. insulana were done with the help of micrometer and presented as mean± SD. The measurements varied in the each developing instar. It was concluded that spiders were difficult to rear in the lab. conditions and each developing stage which was regarded as instars showed variations in size colors and body characteristics.
{"title":"Laboratory Observations Regarding Different Instars of Cyclosainsulana (Costa, 1834) (Araneidae) During Developmental Stages","authors":"Muhammad Saleem Khan , Muhammad Saleem Asghar , Iram Maqsood , Mohsin Bukhari , Lemeng Han , Tang Li-jie , Li Yi-jing , A Shahla , U R Khalil","doi":"10.1016/S1006-8104(15)30032-5","DOIUrl":"10.1016/S1006-8104(15)30032-5","url":null,"abstract":"<div><h3>Abstract</h3><p>The current experiment was conducted to find out the optimal conditions for mass rearing and developmental changes of <em>Cyclosainsulana.</em> The lab. conditions were maintained at (27±2)°C and (65±5)% RH. The clear perplex cages and natural diet consisting of the aphids, larvae of the house fly and larvae of drosophila were used for rearing. <em>C. insulana</em> took (123.12±7.26) days to develop from eggs to adults passing through eight instars under prevailing <em>vivo</em> conditions. The eggs were greenish white in color with average size of 0.57 mm ±0.034. The eggs spent (7.52±1.64) days in emergence. Maximum number of spiderlings survived at the 5th instar (84%) and minimum at the 1st instar (34%). The measurements of different body parts including the total body length, cephalothorax and pedipalps of the both male and female <em>C. insulana</em> were done with the help of micrometer and presented as mean± SD. The measurements varied in the each developing instar. It was concluded that spiders were difficult to rear in the lab. conditions and each developing stage which was regarded as instars showed variations in size colors and body characteristics.</p></div>","PeriodicalId":58038,"journal":{"name":"Journal of Northeast Agricultural UniversityEnglish Edition","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2015-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1006-8104(15)30032-5","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"56332806","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}
Pub Date : 2015-06-01DOI: 10.1016/S1006-8104(15)30037-4
Zeeshan Ahmad, Meng Jun
Abstract
DEA is a nonparametric method used in operation researches and economics fields for the evaluation of the production frontier. It has distinct intrinsic which is worth coping with assessment problems with multiple inputs in particular with multiple outputs. This paper used Dε C2R model of DEA to assess the comparative efficiency of the multiple schemes of agricultural industrial structure, at the end we chose the most favorable also known as “OPTIMAL” scheme. In addition to this, using some functional insights from DEA model non optimal schemes or less optimal schemes had also been improved to some extent. Assessment and selection of optimal schemes of agricultural industrial structure using DEA model gave a greater and better insight of agricultural industrial structure and was the first of such researches in Pakistan.
{"title":"Agricultural Production Structure Adjustment Scheme Evaluation and Selection Based on DEA Model for Punjab (Pakistan)","authors":"Zeeshan Ahmad, Meng Jun","doi":"10.1016/S1006-8104(15)30037-4","DOIUrl":"10.1016/S1006-8104(15)30037-4","url":null,"abstract":"<div><h3>Abstract</h3><p>DEA is a nonparametric method used in operation researches and economics fields for the evaluation of the production frontier. It has distinct intrinsic which is worth coping with assessment problems with multiple inputs in particular with multiple outputs. This paper used <em>D<sup>ε</sup> C</em><sup>2</sup> <em>R</em> model of DEA to assess the comparative efficiency of the multiple schemes of agricultural industrial structure, at the end we chose the most favorable also known as “OPTIMAL” scheme. In addition to this, using some functional insights from DEA model non optimal schemes or less optimal schemes had also been improved to some extent. Assessment and selection of optimal schemes of agricultural industrial structure using DEA model gave a greater and better insight of agricultural industrial structure and was the first of such researches in Pakistan.</p></div>","PeriodicalId":58038,"journal":{"name":"Journal of Northeast Agricultural UniversityEnglish Edition","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2015-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1006-8104(15)30037-4","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"56332860","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}
Pub Date : 2015-06-01DOI: 10.1016/S1006-8104(15)30029-5
Zhao Jing, Wang Li
Abstract
Yersinia enterocolitica is an important zoonotic pathogen that can induce disease outbreaks in a wide host range. Strain YER6022 was isolated from Pelteobagrus vachelli and identified using bacterial morphology and 16S rDNA sequence analysis. Five virulence factors were detected, then artificial infection experiment and histopathological method were carried out. These results showed that strain YER6022 was one of Y. enterocolitica family members. In addition, ail, ystb, virF, yadA and HPIint were dectected. In artificial infection experiment, with 80% mortality and 100% morbidity, injected Pelteobagrus vachellis showed red swollen of the anus, abdomen swelling and fim bleeding. There existed serious hyperaemia and edema in kidney, spleen, intestine and liver at the light microscope. Ultrastructural observation indicated that mitochondria of the liver, kidney, spleen and intestine swelled and mitochondrial cristae broke. The data had further shed light on its pathogenicity in Pelteobagrus vachelli. It would benefit for further studies on pathogenesis of Pelteobagrus vachelli infected with Y. enterocolitica.
{"title":"Isolation and Pathogenicity Analyses on Yersinia enterocolitica from Pelteobagrus vachelli","authors":"Zhao Jing, Wang Li","doi":"10.1016/S1006-8104(15)30029-5","DOIUrl":"10.1016/S1006-8104(15)30029-5","url":null,"abstract":"<div><h3>Abstract</h3><p><em>Yersinia enterocolitica</em> is an important zoonotic pathogen that can induce disease outbreaks in a wide host range. Strain YER6022 was isolated from <em>Pelteobagrus vachelli</em> and identified using bacterial morphology and 16S rDNA sequence analysis. Five virulence factors were detected, then artificial infection experiment and histopathological method were carried out. These results showed that strain YER6022 was one of <em>Y. enterocolitica</em> family members. In addition, <em>ail, ystb, virF, yadA</em> and <em>HPIint</em> were dectected. In artificial infection experiment, with 80% mortality and 100% morbidity, injected <em>Pelteobagrus vachellis</em> showed red swollen of the anus, abdomen swelling and fim bleeding. There existed serious hyperaemia and edema in kidney, spleen, intestine and liver at the light microscope. Ultrastructural observation indicated that mitochondria of the liver, kidney, spleen and intestine swelled and mitochondrial cristae broke. The data had further shed light on its pathogenicity in <em>Pelteobagrus vachelli</em>. It would benefit for further studies on pathogenesis of <em>Pelteobagrus vachelli</em> infected with <em>Y. enterocolitica.</em></p></div>","PeriodicalId":58038,"journal":{"name":"Journal of Northeast Agricultural UniversityEnglish Edition","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2015-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1006-8104(15)30029-5","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"56332765","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}
Pub Date : 2015-06-01DOI: 10.1016/S1006-8104(15)30030-1
Hu Shan, Zhang Xiao-gang, Han Cong, Wei Shuai-yi, Xie Dong-qi, Du Ren-rang, Hu Jian-hong
Abstract
To investigate the effects of different diluents on the quality of the boar semen stored at 17°C, and assess the relationship between sperm motility and the relative levels of enzymes, three commercial diluents (Diluent I, Diluent II and Diluent III) and three boar breed semens (Yorkshire, Landrace and Duroc) were utilized. The sperm motility, effective survival time, survival index, catalase (CAT), the total anti-oxidative capacity (T-AOC) and malondialdehyde (MDA) levels were evaluated. The results showed that there were significant interaction effects between diluents and breeds on the boar sperm motility (P<0.001), survival time (P<0.001), CAT levels (P<0.001) and T-AOC levels (P<0.001), but neither effects nor interaction effects between diluents and breeds on survival index (P>0.05). All of the parameters varied significantly with the increase of the storage time (P<0.001). The survival time increased 12.9% in Yorkshire boar semen diluted with Diluent III than with Diluent II, while the survival time increased 6.6% in Landrace boar semen diluted with Diluent II than with Diluent III. Both CAT and T-AOC levels were significantly positive correlated with sperm motility in all the three boar breeds (P<0.001), while MDA levels were significantly negative correlated with sperm motility (P<0.001). These results indicated that Diluent III and Diluent II were the optimal commercial diluents for Yorkshire and Landrace boar semen stored at 17°C, respectively.
{"title":"Effects of Three Different Diluents on Quality of Boar Semen Stored at 17°C","authors":"Hu Shan, Zhang Xiao-gang, Han Cong, Wei Shuai-yi, Xie Dong-qi, Du Ren-rang, Hu Jian-hong","doi":"10.1016/S1006-8104(15)30030-1","DOIUrl":"10.1016/S1006-8104(15)30030-1","url":null,"abstract":"<div><h3>Abstract</h3><p>To investigate the effects of different diluents on the quality of the boar semen stored at 17°C, and assess the relationship between sperm motility and the relative levels of enzymes, three commercial diluents (Diluent I, Diluent II and Diluent III) and three boar breed semens (Yorkshire, Landrace and Duroc) were utilized. The sperm motility, effective survival time, survival index, catalase (CAT), the total anti-oxidative capacity (T-AOC) and malondialdehyde (MDA) levels were evaluated. The results showed that there were significant interaction effects between diluents and breeds on the boar sperm motility (<em>P</em><0.001), survival time (<em>P</em><0.001), CAT levels (<em>P</em><0.001) and T-AOC levels (<em>P</em><0.001), but neither effects nor interaction effects between diluents and breeds on survival index (<em>P</em>>0.05). All of the parameters varied significantly with the increase of the storage time (<em>P</em><0.001). The survival time increased 12.9% in Yorkshire boar semen diluted with Diluent III than with Diluent II, while the survival time increased 6.6% in Landrace boar semen diluted with Diluent II than with Diluent III. Both CAT and T-AOC levels were significantly positive correlated with sperm motility in all the three boar breeds (<em>P</em><0.001), while MDA levels were significantly negative correlated with sperm motility (<em>P</em><0.001). These results indicated that Diluent III and Diluent II were the optimal commercial diluents for Yorkshire and Landrace boar semen stored at 17°C, respectively.</p></div>","PeriodicalId":58038,"journal":{"name":"Journal of Northeast Agricultural UniversityEnglish Edition","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2015-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1006-8104(15)30030-1","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"56332787","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}
Pub Date : 2015-06-01DOI: 10.1016/S1006-8104(15)30035-0
Zhang Ying-zi, Chen Hai-tao, Hou Shou-yin, Ji Wen-yi, Ouyang Bin-lin, Dun Guo-qiang, Zhang Ji-cheng
Abstract
In order to increase the applying rate of liquid fertilizer and reduce environmental pollution, a slave computer control system for applying variable-rate liquid fertilizer was designed. The system used SMC as core processor and electrically controlled pressure regulator as execution component. The characteristic equation of the system was obtained by using classical control theory. Results indicated that the characteristic equation met the requirements of routh-criterion, which indicated the working process of the system was stable. Performance of the slave computer was verified via bench tests. Results demonstrated that there was no significant influence on the response from interclass error. The fertilization error was less than 0.9, and the fertilization accuracy was larger than 97%. The liquid fertilizer emitted by the fertilizing devices had no significant difference in uniformity, which met the demands of the slave computer control system for applying variable-rate liquid fertilizer.
{"title":"Design and Experiment of Slave Computer Control System for Applying Variable-rate Liquid Fertilizer","authors":"Zhang Ying-zi, Chen Hai-tao, Hou Shou-yin, Ji Wen-yi, Ouyang Bin-lin, Dun Guo-qiang, Zhang Ji-cheng","doi":"10.1016/S1006-8104(15)30035-0","DOIUrl":"10.1016/S1006-8104(15)30035-0","url":null,"abstract":"<div><h3>Abstract</h3><p>In order to increase the applying rate of liquid fertilizer and reduce environmental pollution, a slave computer control system for applying variable-rate liquid fertilizer was designed. The system used SMC as core processor and electrically controlled pressure regulator as execution component. The characteristic equation of the system was obtained by using classical control theory. Results indicated that the characteristic equation met the requirements of routh-criterion, which indicated the working process of the system was stable. Performance of the slave computer was verified via bench tests. Results demonstrated that there was no significant influence on the response from interclass error. The fertilization error was less than 0.9, and the fertilization accuracy was larger than 97%. The liquid fertilizer emitted by the fertilizing devices had no significant difference in uniformity, which met the demands of the slave computer control system for applying variable-rate liquid fertilizer.</p></div>","PeriodicalId":58038,"journal":{"name":"Journal of Northeast Agricultural UniversityEnglish Edition","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2015-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1006-8104(15)30035-0","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"56332843","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}
Pub Date : 2015-06-01DOI: 10.1016/S1006-8104(15)30025-8
Wang Qiu-ju , Liu Feng , Gao Pan , Gao Zhong-chao , Chang Ben-chao , Liu Yan-xia , Zhang Li-li
Abstract
Five rice varieties were planted to determine the variation of the yield and quality traits in five different regions in a cold area of China. The results showed that the number of the panicles, the number of grains per panicle and percentage of head-milled rice displayed quadratic curves against the accumulated temperature, and the sterile rate decreased with greater accumulated temperature. However, 1 000-grain weight had no correlation with the accumulated temperature and protein content, amylose content and taste also had no obvious relation with the accumulated temperature. The results from the accumulated temperature differed with rice variety, so the temperature insensitive type variety should be proposed for production.
{"title":"Effects of Rice Yield and Quality Across Accumulated Temperature Zone Planting in Cold Area","authors":"Wang Qiu-ju , Liu Feng , Gao Pan , Gao Zhong-chao , Chang Ben-chao , Liu Yan-xia , Zhang Li-li","doi":"10.1016/S1006-8104(15)30025-8","DOIUrl":"10.1016/S1006-8104(15)30025-8","url":null,"abstract":"<div><h3>Abstract</h3><p>Five rice varieties were planted to determine the variation of the yield and quality traits in five different regions in a cold area of China. The results showed that the number of the panicles, the number of grains per panicle and percentage of head-milled rice displayed quadratic curves against the accumulated temperature, and the sterile rate decreased with greater accumulated temperature. However, 1 000-grain weight had no correlation with the accumulated temperature and protein content, amylose content and taste also had no obvious relation with the accumulated temperature. The results from the accumulated temperature differed with rice variety, so the temperature insensitive type variety should be proposed for production.</p></div>","PeriodicalId":58038,"journal":{"name":"Journal of Northeast Agricultural UniversityEnglish Edition","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2015-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1006-8104(15)30025-8","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"56332730","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}
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