[Objective] The aim is to investigate the impact of different host plants, planting methods and directions on the damage law of Asterococcus muratae. [Method] The quantity of pests, size of female pests and quantity o...[Objective] The aim is to investigate the impact of different host plants, planting methods and directions on the damage law of Asterococcus muratae. [Method] The quantity of pests, size of female pests and quantity of ova of A. mu-ratae in Suzhou in different host plants under two planting methods and in four di-rections of a host plant were measured. [Result] A. muratae exhibits selectivity to host plants, and their quantity, female pest size and reproductive capacity are higher in Magnolia grandiflora（southern magnolia） than in other plants. The four directions of the host plant suffer to different extents, and the north part is usual y the most in-jured. Mass-planted southern magnolias are more seriously impacted than individual y-planted ones. Both size and weight of a female pest have significant linear relations with ovum quantity, and the weight of a female pest is more closely related to its ovum quantity. Based on the weight of a female pest, we can predict the exact ovum quantity according to the equation y=2E-05x＋0.003 7. [Conclusion] The research re-sults provide reference for making an effective control plan for A. muratae.展开更多
In field chemical prevention and control test of A. muratae, effect of re- moving tertia coating method was the fastest in five pesticide application methods, and preventive effect of burying pesticide method at the r...In field chemical prevention and control test of A. muratae, effect of re- moving tertia coating method was the fastest in five pesticide application methods, and preventive effect of burying pesticide method at the root was significantly im- proved after 14 days. Corrected death rates of the two methods were both above 70%, and corrected death rate of burying pesticide method at the root reached 100% after using pesticide secondly for 7 days. For different pesticide tests, pre- vention and control effect of matrine water aqua stoste, matrine water aqua 10 times liquid and imidacloprid wet powder 10 times liquid coating was the best, and burying pesticide method at the root and pesticide liquid irrigating root method had the best prevention and control effect when respectively used imidacloprid wet pow- der and dimethoate missible oil. It was suggested to use 40-60 g/plant of imidaclo- pdd wet powder at the root during occurrence period of nymphae, which had simple operation and good effect.展开更多
A three-dimensional computational fluid dynamics model is developed by software Fluent 6.2, to simulate the flow field inside the nozzle block of the Murata vortex spinning. The flowing state and the distribution law ...A three-dimensional computational fluid dynamics model is developed by software Fluent 6.2, to simulate the flow field inside the nozzle block of the Murata vortex spinning. The flowing state and the distribution law of static pressure and velocity are characterized and analyzed. The relationship between the flowing state and the structure of the vortex spun yarn is also discussed. The research results can enhance the understanding of the yarn formation principle from viewpoint of the airflow field law inside the nozzle block of Murata vortex spinning.展开更多
The occurrence, morphological characteristic, biological characteristic, population fluctuation and control methods of Asterococcus muratae were reviewed in the paper, and the research direction in the future was fore...The occurrence, morphological characteristic, biological characteristic, population fluctuation and control methods of Asterococcus muratae were reviewed in the paper, and the research direction in the future was forecasted, so as to provide reference for landscape management and other relevant departments to effec- tively control the insect.展开更多
On the basis of spectroscopic evidence (MS, ~1HNMR, ^(13)CNMR, CD, ~1H-~1H and ~1H-^(13)C cosy NMR) and chemical synthesis, the structure of isodopharicin E (1), isolated from the dry leaves and tender branches of Iso...On the basis of spectroscopic evidence (MS, ~1HNMR, ^(13)CNMR, CD, ~1H-~1H and ~1H-^(13)C cosy NMR) and chemical synthesis, the structure of isodopharicin E (1), isolated from the dry leaves and tender branches of Isodon pharicus (Prain) Murata was elucidated as 3R, 3'R, 13S, 13'S-tetrahydroxy-11S, 11'S-diacetoxy(16S-O-15')-bisentkaur-15'-en-15-one.展开更多
Murata Electronics North Alnerica公司推出其NFM18PS 0603表面贴装型3端电容系列。这一新型电容采用经改进的电极结构，据称可以减少等效串联电感(ESL)，从而改善高频滤波性能，在100MHZ～1GHz插损50dB～70dB。该系列适于使用在数字...Murata Electronics North Alnerica公司推出其NFM18PS 0603表面贴装型3端电容系列。这一新型电容采用经改进的电极结构，据称可以减少等效串联电感(ESL)，从而改善高频滤波性能，在100MHZ～1GHz插损50dB～70dB。该系列适于使用在数字电子设备中，如DVD。展开更多
贸泽电子备货Murata的WSM-BL241蓝牙?低功耗模块。WSM-BL241基于Nordic n RF52832片上系统(So C),以小尺寸封装提供超低功耗蓝牙5功能,适用于物联网(Io T)、资产跟踪、信标和医疗等各种应用。贸泽电子供应的Murata WSM-BL241模块利用性...贸泽电子备货Murata的WSM-BL241蓝牙?低功耗模块。WSM-BL241基于Nordic n RF52832片上系统(So C),以小尺寸封装提供超低功耗蓝牙5功能,适用于物联网(Io T)、资产跟踪、信标和医疗等各种应用。贸泽电子供应的Murata WSM-BL241模块利用性能强悍的Nordic n RF52832 So C在智能手机。展开更多
文摘[Objective] The aim is to investigate the impact of different host plants, planting methods and directions on the damage law of Asterococcus muratae. [Method] The quantity of pests, size of female pests and quantity of ova of A. mu-ratae in Suzhou in different host plants under two planting methods and in four di-rections of a host plant were measured. [Result] A. muratae exhibits selectivity to host plants, and their quantity, female pest size and reproductive capacity are higher in Magnolia grandiflora（southern magnolia） than in other plants. The four directions of the host plant suffer to different extents, and the north part is usual y the most in-jured. Mass-planted southern magnolias are more seriously impacted than individual y-planted ones. Both size and weight of a female pest have significant linear relations with ovum quantity, and the weight of a female pest is more closely related to its ovum quantity. Based on the weight of a female pest, we can predict the exact ovum quantity according to the equation y=2E-05x＋0.003 7. [Conclusion] The research re-sults provide reference for making an effective control plan for A. muratae.
基金Supported by Program from Suzhou Conservation&Monitoring Center for the Classical Gardens of World Cultural Heritage~~
文摘In field chemical prevention and control test of A. muratae, effect of re- moving tertia coating method was the fastest in five pesticide application methods, and preventive effect of burying pesticide method at the root was significantly im- proved after 14 days. Corrected death rates of the two methods were both above 70%, and corrected death rate of burying pesticide method at the root reached 100% after using pesticide secondly for 7 days. For different pesticide tests, pre- vention and control effect of matrine water aqua stoste, matrine water aqua 10 times liquid and imidacloprid wet powder 10 times liquid coating was the best, and burying pesticide method at the root and pesticide liquid irrigating root method had the best prevention and control effect when respectively used imidacloprid wet pow- der and dimethoate missible oil. It was suggested to use 40-60 g/plant of imidaclo- pdd wet powder at the root during occurrence period of nymphae, which had simple operation and good effect.
基金This project is supported by the National Natural Science Foundation of China,under grant No.10872047.
文摘A three-dimensional computational fluid dynamics model is developed by software Fluent 6.2, to simulate the flow field inside the nozzle block of the Murata vortex spinning. The flowing state and the distribution law of static pressure and velocity are characterized and analyzed. The relationship between the flowing state and the structure of the vortex spun yarn is also discussed. The research results can enhance the understanding of the yarn formation principle from viewpoint of the airflow field law inside the nozzle block of Murata vortex spinning.
文摘The occurrence, morphological characteristic, biological characteristic, population fluctuation and control methods of Asterococcus muratae were reviewed in the paper, and the research direction in the future was forecasted, so as to provide reference for landscape management and other relevant departments to effec- tively control the insect.
文摘On the basis of spectroscopic evidence (MS, ~1HNMR, ^(13)CNMR, CD, ~1H-~1H and ~1H-^(13)C cosy NMR) and chemical synthesis, the structure of isodopharicin E (1), isolated from the dry leaves and tender branches of Isodon pharicus (Prain) Murata was elucidated as 3R, 3'R, 13S, 13'S-tetrahydroxy-11S, 11'S-diacetoxy(16S-O-15')-bisentkaur-15'-en-15-one.
文摘Murata Electronics North Alnerica公司推出其NFM18PS 0603表面贴装型3端电容系列。这一新型电容采用经改进的电极结构，据称可以减少等效串联电感(ESL)，从而改善高频滤波性能，在100MHZ～1GHz插损50dB～70dB。该系列适于使用在数字电子设备中，如DVD。
文摘贸泽电子备货Murata的WSM-BL241蓝牙?低功耗模块。WSM-BL241基于Nordic n RF52832片上系统(So C),以小尺寸封装提供超低功耗蓝牙5功能,适用于物联网(Io T)、资产跟踪、信标和医疗等各种应用。贸泽电子供应的Murata WSM-BL241模块利用性能强悍的Nordic n RF52832 So C在智能手机。
