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Comparative Test for New Watermelon Cultivars
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作者 欧小青 《Agricultural Science & Technology》 CAS 2015年第11期2485-2487,2491,共4页
Comparative test was conducted on 11 (including the cultivar as control) new watermelon cultivars to identify the yielding ability, stability, adaptability, stress resistance and other important characteristics of t... Comparative test was conducted on 11 (including the cultivar as control) new watermelon cultivars to identify the yielding ability, stability, adaptability, stress resistance and other important characteristics of the new watermelon oultivars, to thereby obtain new watermelon cultivars with good comprehensive characters suit- able for different regions and different cultivation manners. The results showed that Dali Qilin, Jingangerhao Hemeiren, Hongli Dahonghu, Hongli Baowang, Longjing Heibao and XJ-I had outstanding performance in yield, resistance and quality, and thus were worthy of further experiment demonstration and certification. 展开更多
关键词 WATERMELON New cultivars comparative test EVALUATION
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Comparative Test of New Late Indica Hybrid Rice Combinations with Good Quality
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作者 Jinhe HU Fei ZHU +2 位作者 Xiaolin CHENG Yuping HU Fengqin YU 《Agricultural Biotechnology》 CAS 2021年第4期20-24,共5页
[Objectives]This study was conducted to screen rice varieties suitable for planting in Nanchang City with high quality,high yield,good yield,and strong disease and stress resistance.[Methods]Seven new late indica hybr... [Objectives]This study was conducted to screen rice varieties suitable for planting in Nanchang City with high quality,high yield,good yield,and strong disease and stress resistance.[Methods]Seven new late indica hybrid rice combinations with good quality bred in Jiangxi Province in recent years and seven new late indica hybrid rice combinations with good quality bred by Nanchang Academy of Agricultural Sciences were introduced,and compared with Tianyouhuazhan as a control.[Results]The rice quality and taste of the tested combinations were better than those of the control.Among the tested combinations,Yuliangyoufuxiangzhan,Xintaiyousizhan,Yuxiangliangyou No.8 and Guangheyou 33 had good stress resistance,high yield and good rice quality.[Conclusions]This study provides a theoretical basis for the selection and breeding of new rice varieties in Nanchang City. 展开更多
关键词 Good-quality late indica rice Hybrid rice New combination comparative test
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ITTC COMPARATIVE TESTS ON PRESSURE FLUCTUATIONS
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作者 Takao Sasajima Yoshitaka Ukon 《Journal of Hydrodynamics》 SCIE EI CSCD 1989年第3期11-25,共15页
Pressure fluctuation induced by unsteady propeller cavitation is one of the most predominant vibration sources. Cavitation Committee of International Towing Tank Conference (ITTC) has been continuously reviewing the t... Pressure fluctuation induced by unsteady propeller cavitation is one of the most predominant vibration sources. Cavitation Committee of International Towing Tank Conference (ITTC) has been continuously reviewing the theoretical and experimental prediction methods. In this paper, the accuracy of the existing prediction methods and the parameters which affect the model test results are discussed, especial]y with referring to the results of the comparative tests on the 'Sydney Express' propeller, organized by Cavitation Committee. 展开更多
关键词 PRO ITTC comparative testS ON PRESSURE FLUCTUATIONS 几几 MODE OO
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Performance of Comparative Cervical Tuberculin Test and Serological Methods with Culturing of Nasal Swab in Diagnosis of Bovine Tuberculosis in Cross Breed Cattle Baghdad Iraq: A Comparative Evaluation
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作者 Waffa A. Ahmed 《Advances in Microbiology》 2016年第11期867-878,共13页
This study was designed to assess the diagnostic value of Rapid Antigen bovine TB antibody test kit (RAT) and any association with cervical comparative tuberculin test (CCTT), (iELISA) and nasal swabs culturing, among... This study was designed to assess the diagnostic value of Rapid Antigen bovine TB antibody test kit (RAT) and any association with cervical comparative tuberculin test (CCTT), (iELISA) and nasal swabs culturing, among based detection of M. bovis infection. A herd of 21 animals aged 1 - 8 years cross bread cattle of college of veterinary medicine. 19 (90.47%) animals had good body condition scores, two bulls included, and 2 (9.52%) cows were fair. Serum samples were collected, analyzed for anti-bovine TB antibody using RAT and iELISA. Also the herd was screened by CCTT. The tests were carried out twice, more than ten month interval, and twelve nasal swabs were taken within second survey. The first survey results revealed prevalence rate: 4 (19.04%) animals considered positive results (one positive and 3 suspected results) for CCTT, while the prevalence rate according to RAT was 10 (47.61%). The difference between the two prevalence rate was significant (McNemar chi-statistic = 4.50, p-value = 0.03) Kappa = 0.215 95% confidence interval: from -0.128 to 0.558;the strength of agreement is considered to be “fair”. The study interprets: sensitivity 30%;specificity 99%. The second survey results revealed prevalence rate according to CCTT was 4 (36.36%), while prevalence rate according to RAT was 5 (45.45%). The difference between the two prevalence was not significant (McNemar chi-statistic = 0.33, p-value = 0.56). Kappa = 0.441 95% confidence interval: from -0.087 to 0.968;the strength of agreement is considered to be “moderate”;sensitivity: 60%;specificity: 83%. All serum samples and nasal swabs gave negative results for iELISA and culturing respectively. The study concluded that RAT was highly specific, easy, labor and time saving, suggesting its use as screening test in bovine tuberculosis, and CCTT could be used to confirm positive animals screened by RAT, while there was no association between RAT, CCTT with body condition scores, iELISA and nasal swabs culture results. 展开更多
关键词 BTB Cervical comparative Tuberculin test One Step Bovine TB Antibody Rapid test IELISA
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Non-Destructive Detection and Evaluation of Heavy Metal Pollution in Tailings Reservoir
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作者 Zhonghua Qi Jianhua Hu Jiwei Zhang 《Journal of Environmental Protection》 2024年第9期921-933,共13页
Heavy metal pollution is a negative effect generated in the process of utilizing non-ferrous mineral. Studies about heavy metal migration detection are very important. A new method for rapid detection of heavy metal m... Heavy metal pollution is a negative effect generated in the process of utilizing non-ferrous mineral. Studies about heavy metal migration detection are very important. A new method for rapid detection of heavy metal migration based on ground penetrating radar (GPR) was provided. Comparative tests were studied from field to lab with GPR and X-ray fluorescence analysis (XRF). A tailings reservoir in the Xiangjiang River basin at Hunan Province was taken as experimental site. The downward transfer rule of heavy metal migration was confirmed through tests on systematically arranged survey lines and sampling points in tailings site. Results showed: 1) Through GPR image recognition, tailings reservoir had 3 layers. Reclaimed soil layer (the first layer) and tailings layer (the second layer) had a clear interface. However, tailings layer (the second layer) and subsoil layer (the third layer) had an obscure interface on radar images. It was concluded that heavy metal component had migrated downwards. 2) Chemical component analysis verified image recognition conclusions. Concentrations of As, Cd and Pb were significantly out of limit, while concentration of Cr was under limit according to analysis results on samples from different depths. 3) Pollution degree was evaluated. Downward migration was the main form of heavy metal migration in tailings site, upward migration occurred through adsorption at the same time. 展开更多
关键词 Tailings Site Heavy Metal Migration comparative tests Ground Penetrating Rada
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Test and Analysis of the Sound Insulation Performance of Four Types of Timber Structure Floors under Jumping Excitation 被引量:1
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作者 Yujie Huang Hao Zhu +3 位作者 Dauletbek Assima Zheng Wang Minmin Li Xinyue Zhao 《Journal of Renewable Materials》 SCIE EI 2021年第4期829-840,共12页
To improve the impact sound insulation performance of building floors and meet the objective requirements for living comfort of residents,in this article,three kinds of elastic cushion materials,Portuguese cork board,... To improve the impact sound insulation performance of building floors and meet the objective requirements for living comfort of residents,in this article,three kinds of elastic cushion materials,Portuguese cork board,BGL insulation sound insulation foam board,and EPP polypropylene plastic foam board,are applied to the sound insulation of a light frame wood floor structure of the same bedroom and compared to the ordinary floor.This study uses the transfer function method and transient excitation method to measure the sound insulation,damping ratio,and elastic modulus of materials,as well as the sound insulation of the floor under the jumping excitation method of daily behavior.Through comparative analysis,the results and factors of improving the sound insulation performance of the floor are obtained,according to which three types of elastic cushion materials and the floor covering composed of them have higher vibration and noise reduction performance.Among them,the overall sound insulation performance of BGL board floor is the highest,followed by EPP board and cork board floor,and ordinary OSB floor is the lowest.Under the jumping excitation method,three floating floors can improve the impact sound insulation performance of the middle and low-frequency bands. 展开更多
关键词 Timber floor structure elastic cushion material damping ratio elastic modulus jumping excitation method of daily behavior testing and comparative analysis
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Employment Quality EvaluationModel Based on Hybrid Intelligent Algorithm
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作者 Xianhui Gu Xiaokan Wang Shuang Liang 《Computers, Materials & Continua》 SCIE EI 2023年第1期131-139,共9页
In order to solve the defect of large error in current employment quality evaluation,an employment quality evaluation model based on grey correlation degree method and fuzzy C-means(FCM)is proposed.Firstly,it analyzes... In order to solve the defect of large error in current employment quality evaluation,an employment quality evaluation model based on grey correlation degree method and fuzzy C-means(FCM)is proposed.Firstly,it analyzes the related research work of employment quality evaluation,establishes the employment quality evaluation index system,collects the index data,and normalizes the index data;Then,the weight value of employment quality evaluation index is determined by Grey relational analysis method,and some unimportant indexes are removed;Finally,the employment quality evaluation model is established by using fuzzy cluster analysis algorithm,and compared with other employment quality evaluation models.The test results show that the employment quality evaluation accuracy of the design model exceeds 93%,the employment quality evaluation error can meet the requirements of practical application,and the employment quality evaluation effect is much better than the comparison model.The comparison test verifies the superiority of the model. 展开更多
关键词 Employment quality fuzzy c-means clustering algorithm grey correlation analysis method evaluation model index system comparative test
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Comparison of New Maize Cultivars at Different Altitudes
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作者 陆顺生 曾林 +3 位作者 段再燕 宋云飞 刘艳 单艳 《Agricultural Science & Technology》 CAS 2016年第9期2030-2036,共7页
[Objective] This study aimed to meet the demand of farmers for highyielding, high-quality, wide-adaptability and multi-resistant new maize cultivars, and to make food production grow continuously. [Method] Comparative... [Objective] This study aimed to meet the demand of farmers for highyielding, high-quality, wide-adaptability and multi-resistant new maize cultivars, and to make food production grow continuously. [Method] Comparative test of new maize cultivars was conducted at different altitudes in 2015, and the yield, main economic characters, agronomic traits, growth period and resistance of maize cultivars were analyzed. [Result] Ruidan 26 and Yongrui 16 can be cultivated in the areas below the altitude of 2 200 m; Huaxingdan 88 can be cultivated in the areas below the altitude of 1 750 m; the other new maize cultivars still need to be tested further. [Cenclusion] The research results can be applied in this area and other similar areas, which will effectively promote the upgrading of maize cultivars and improve the yield per unit area. 展开更多
关键词 New maize cultivar comparative test Different altitudes
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Effect of Plasticizers on Properties of Rice Straw Fiber Film 被引量:2
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作者 Chen Hong-rui Chen Hai-tao +2 位作者 Liu Shuang Dun Guo-qiang Zhang Ying 《Journal of Northeast Agricultural University(English Edition)》 CAS 2014年第4期67-72,共6页
In order to improve the properties of rice straw fiber film, one factor contrast test method was employed. Plasticizer type was chosen as input variable, dry tension strength and elongation, wet tension strength and e... In order to improve the properties of rice straw fiber film, one factor contrast test method was employed. Plasticizer type was chosen as input variable, dry tension strength and elongation, wet tension strength and elongation, bursting strength and tearing strength were chosen as indexes. The results showed that there were significant differences among the means of dry tension strength, dry elongation and bursting strength of different plasticizers; there were not significant differences among the means of wet tension strength, wet elongation and tearing strength of different plasticizers; for dry tension strength and elongation, glycerol had a significant difference with sorbitol and PEG, no significant difference was observed between sorbitol and PEG, dry tension strength added glycerol had been reduced 6.8% compared with that added sorbitol, reduced 9.5% compared with that added PEG; elongation had been improved 6.1% and 9.4%, respectively; for bursting strength, sorbitol had a significant difference with glycerol and PEG, no significant difference was observed between glycerol and PEG; bursting strength added glycerol and added PEG had been improved 6.9% and 5.6%, respectively compared with that of the added sorbitol. The results provided a theoretical reference for further improving the straw fiber film manufacturing process. 展开更多
关键词 rice straw FILM PLASTICIZER comparative test
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Comparison and early selection of new clones in Populus tomentosa
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作者 ZHANG Zi-hui WANG Ze-liang +1 位作者 LIN Shan-zhi ZHANG Zhi-yi 《Forestry Studies in China》 CAS 2008年第3期162-167,共6页
In our study, two experimental plantations, respectively, with 24 and 32 new clones of P tomentosa, were established in Weixian County, Hebei Province and Wuzhi County, Henan Province using a completely randomized blo... In our study, two experimental plantations, respectively, with 24 and 32 new clones of P tomentosa, were established in Weixian County, Hebei Province and Wuzhi County, Henan Province using a completely randomized block design. A comparative study was conducted on the continuous 5-year-old height and diameter at breast height (DBH) of new clones in the two plantations. As well, based on genetic correlation over the years of testing of these clones, a preliminary study of early selection was carried out. Results indicate that the growth traits of the new clones in Weixian were better than those in Wuzhi. The traits show weak correlation between the two plantations. In some stands, the height, DBH and seedling volume of 5-year-old clones presented statistically significant differences among clones. In both plantations, the new clones showed over 0.6 repeatability of height, DBH and volume, as well as larger coefficients of variation (CV). The fact that these clones achieved the largest repeatability and CV in the second year suggests that these traits are highly controlled by heredity. Thus, based on the growth traits of the second year, the new clones B305, B307, B303, H75, BT18, BT17 and 21J-1 were considered suitable in Weixian. In Wuzhi, the new clones had variable repeatability and CVs in various years and their correlation of growth traits among different years was not high. We conclude that early selection of new clones was not feasible in Wuzhi. 展开更多
关键词 Populus tomentosa Carr. new clones comparative test early selection
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Variety Comparison between Domestic Alfalfa and Introduced Alfalfa
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作者 GENG Hui XU An-kai LIU Zhuo JIN Chun-hua PANG Jian-guo WANG Zhi-feng 《Animal Husbandry and Feed Science》 CAS 2009年第11期18-21,28,共5页
[ Objective] To explore the growth characteristics of domestic and introduced alfalfa varieties and provide scientific guidance for the intro- duction of superior alfalfa varieties. [Method] A total of 17 domestic and... [ Objective] To explore the growth characteristics of domestic and introduced alfalfa varieties and provide scientific guidance for the intro- duction of superior alfalfa varieties. [Method] A total of 17 domestic and introduced alfalfa varieties were selected. Through a three-year compari- son of varieties, their biological characters, plant height, branch density, fresh forage yield, leaf stem ratio and other traits were detected and ana- lyzed. [ Result] All the tested alfalfa went through the cold winter between 2006 and 2008 and could finish the reproductive cycle. The forage yield per plant and the plant height of the domestic alfalfa varieties were the highest, but their branching ability and the leaf stem ratio were lower. The European alfalfa varieties had strong branching capability, and the leaf yield of the American alfalfa varieties was the highest. [ Conclusion] The do- mestic alfalfa varieties have suoerior oerformances, while the introduced alfalfa varieties have better aualities. 展开更多
关键词 ALFALFA Varieties comparative test TRAITS
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Comparison on Detection Results of PRV Wild Virus Antibody Provided by Different Institutions
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作者 Sun Hua Song Zhongxu +6 位作者 Zeng Defang Li Lianghua Li Mingbo Dong Binke Mei Shuqi Peng Xianwen Wu Huayu 《Animal Husbandry and Feed Science》 CAS 2015年第2期101-102,共2页
The detection results from different institutions were performed at the first stage of PRV wild virus antibody supervision in swine breeding. The serum samples were collected from 71 individuals and each individual wa... The detection results from different institutions were performed at the first stage of PRV wild virus antibody supervision in swine breeding. The serum samples were collected from 71 individuals and each individual was sampled twice at one week interval. The results showed that the positive coincidences for gE antibody between two institutions were 35.71% and 45.45 % :espectively, with the total detection coincidences of 87.32% and 91.55% correspondingly. The positive coincidences for gE antibody between the two detections of each institution were 40.00% and 75.00% respectively, with the total detection coincidences of 87.32% and 97.18% correspondingly. It indicates that it is very necessary to screen the detection institution at the first supervision stage of PRV wild vires for swine population. 展开更多
关键词 Pseudorabies virus (PRV) PRV wild virus antibody comparative test
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Optimal Antenna of Ground Penetrating Radar for Depicting the Debris Thickness and Structure of the Koxkar Glacier,Tianshan, China 被引量:1
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作者 武震 张世强 刘时银 《Journal of Earth Science》 SCIE CAS CSCD 2013年第5期830-842,共13页
We use multi-frequency ground penetrating radar (GPR) to detect and map debris thickness and shallow layer structure of buried ice-body under debris-covered. The basis analysis is depend on mainly (1) the stacking... We use multi-frequency ground penetrating radar (GPR) to detect and map debris thickness and shallow layer structure of buried ice-body under debris-covered. The basis analysis is depend on mainly (1) the stacking wave velocity in a common mid-point (CMP) survey, (2) the ratio of attenuation of an electromagnetic wave passing through different media, and (3) the vertical resolu- tion. Through a series of analysis, it was found that the optimal average velocity in the shallow layer (0-4 m) is 0.06 m/ns. Images obtained with antennas having different frequencies have different char- acteristics; i.e., the 50 MHz antenna provides much worse vertical resolution than the 200 and 100 MHz antennas (90 and 160 ns, respectively) and the performance of the 200 MHz antenna for a debris-covered glacier is best. This study provides the basis for accurate analysis of the structure and thickness of the debris layer in the zone of ablation of a debris-covered glacier, this study also provides a reference for research into the formation mechanism and estimation of the ice volume of glacier covered by debris. 展开更多
关键词 multi-frequency ground penetrating radar ANTENNA comparative test Koxkar Glacier debris layer.
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