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Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

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Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

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Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
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Применить Всего найдено 15. Отображено 15.
27-08-2008 дата публикации

Method for digesting available nutrient from acid soil as well as combined digestion agent thereof

Номер: CN0101251451A
Автор: DUAN TIECHENG, JIA WEI, HU JIANDONG, YANG JIANFEI, LI WEIHUA, ZHU XIUHONG, TIECHENG DUAN, WEI JIA, JIANDONG HU, JIANFEI YANG, WEIHUA LI, XIUHONG ZHU
Принадлежит:

The invention relates to a method for soaking and extracting available nutrient of acid soil and a combined extraction agent thereof. The combined extraction agent is a combination comprising NaOAc, Na2SO4, NaF, and EDTA. The combined extraction agent is prepared to aqueous solution which comprises 0.15mol/L to 0.25mol/L NaOAc, 0.02mol/L to 0.03mol/L Na2SO4, 0.01mol/L to 0.02mol/L NaF, 0.001mol/L to 0.002mol/L EDTA and 0.06mol/L to 0.15mol/L H2SO4 and has a PH value between 2.4 and 2.6; then the solution with the mass ratio of the solution to soil between 3 and 20 is mixed to the soil which is to be measured; under the temperature condition between 20 DEG C and 30 DEG C, the solution is oscillated or stirred, soaked and extracted for 3 minutes to 20 minutes and filtered. The combined extraction agent of the invention has strong buffering performance, wide application range and high extraction efficiency, has remarkable positive correlation with a routine measuring result and has important ...

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Номер записи: 1
19-03-2008 дата публикации

Chemiluminescence instrument transient stable static state feeding device

Номер: CN0101144781A
Автор: LIU YANCHAO, LI ZHENFENG, DUAN TIECHENG, MENG LEI, LI WEIHUA, WANG ZHIRONG, YANCHAO LIU, ZHENFENG LI, TIECHENG DUAN, LEI MENG, WEIHUA LI, ZHIRONG WANG
Принадлежит:

The invention relates to a static mode sample injection mechanism of the chemiluminescence analyzer with simple operation and maintenance, low testing cost, good testing reproducibility and better environment adaptability, the sample injection mechanism adopts a novel mechanical controlling mechanism to inject sample semi-automatically, the testing accuracy can meet the estimating level of flow injecting, the structure of the apparatus is sample, and the price is inexpensive.

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Номер записи: 2
24-09-2008 дата публикации

Method for measuring kalium in soil by tetraphenylboron sodium nephelometery and its screening agent

Номер: CN0101271072A
Автор: DUAN TIECHENG, JIA WEI, YANG SUQIN, ZHAO YUZHENG, ZHANG GUANGJUN, ZHENG LONGKAI, LI WEIHUA, HU JIANDONG, TIECHENG DUAN, WEI JIA, SUQIN YANG, YUZHENG ZHAO, GUANGJUN ZHANG, LONGKAI ZHENG, WEIHUA LI, JIANDONG HU
Принадлежит:

The invention discloses a method for measuring potassium by the sodium tetraphenylborate turbidimetry and a masking agent which is used by the method. The masking agent is a water solution containing 0.01 to 0.04mol/l of Cu<2+>, 0.04 to 0.10mol/l of tartaric acid and 5 to 10mol/l of H<+>; the method for measuring the potassium by the sodium tetraphenylborate turbidimetry is that: the masking agent is used for masking ammonium ion and other interfering ions in liquid under test, basic EDTA disodium salt solution is further added to carry out the auxiliary masking, basic sodium tetraphenylborate water solution is finally added, and the turbidity measurement is immediately carried out after shaking the reaction solution well. The measurement method has the advantages of simple operation, rapid and accurate measurement and low cost; the linear range thereof meets the requirements of the rapid measurement, which is suitable for the application of grass roots and agriculture popularization departments ...

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Номер записи: 3
09-06-2004 дата публикации

中性、石灰性土壤养分联合浸提剂

Номер: CN0001502980A
Автор: DUAN TIECHENG, HU JIANDONG, ZHU XIUHONG, TIECHENG DUAN, JIANDONG HU, XIUHONG ZHU, 段铁城
Принадлежит:

This invention relates to a soil nutrient combined extractive agent, especially to a neutral, lime soil nutrient combined extractive agent related obviously with conventional extracting effect and leaching multiple kinds of soil effective nutrients at the same time which is a solid powder containing Na ions, sulphate, acetate, bicarbonate and carbonate multiple effective nutrient to be mixed to water solution to extractor in neutral, lime soils, eg.: to extract ammonia nitrogen, nitrate nitrogen, fast-effective P and fast-effective K at the same time.

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Номер записи: 4
09-06-2004 дата публикации

速测用酸性土壤养分联合浸提剂

Номер: CN0001502979A
Автор: DUAN TIECHENG, ZHU XIUHONG, JIA WEI, TIECHENG DUAN, XIUHONG ZHU, WEI JIA, 段铁城
Принадлежит:

This invention relates to soil nutrient combined extractive agent, especially to a quickly measured acid soil nutrient combined extractive agent obviously related to conventional extracting effect and leaching multiple soil effective martinets at the same time, which is a solid powder containing F, Na ions, sulphate and acetate and EDTA to be mixed to water solution to quickly and effectively extract fast-effective N, P and K etc. In acid soil.

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Номер записи: 5
06-07-2011 дата публикации

Chemiluminescence composition and method for detecting soil available molybdenum in soil by using the same

Номер: CN0101328403B
Автор: LI WEIHUA, SUN WEITAO, MENG LEI, WANG ZHIRONG, DUAN TIECHENG, WANG HAIJUAN, LIU YANCHAO, WEIHUA LI, WEITAO SUN, LEI MENG, ZHIRONG WANG, TIECHENG DUAN, HAIJUAN WANG, YANCHAO LIU
Принадлежит:

The present invention relates to a chemiluminescence compound and a method for determining active molybdenum in soil through the compound. The compound is a chemiluminescence system prepared from a composition A and a composition B. The composition A is a solution containing the dissolved 40 to 2,000mg/kg of SCN<->, 30 to 300mg/kg of potassium borohydride, and 0.02 to 10mg/kg of MoO4<2-> with a pH value of between 0.10 and 2.00. The composition B is a solution containing the dissolved 1.0*10<-5> to 1.0*10<-3>mol/L of luminol with a pH value of between 9.00 and 14.00. The method for determining the active molybdenum in the soil comprises the following steps of: extracting the active molybdenum in the soil through a Tamm solution; correctly determining the content of molybdenum through a chemiluminescence system after separation and trash extraction. The chemiluminescence system has a low detection limit on molybdenum, a high sensitivity and a wide linear range. The method is an ideal method ...

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Номер записи: 6
27-08-2008 дата публикации

Method for digesting available nutrient from neutral and calcareous soil as well as combined digestion agent thereof

Номер: CN0101251450A
Автор: DUAN TIECHENG, JIA WEI, ZHU XIUHONG, LI WEIHUA, YANG JIANFEI, HU JIANDONG, SUN YUFENG, TIECHENG DUAN, WEI JIA, XIUHONG ZHU, WEIHUA LI, JIANFEI YANG, JIANDONG HU, YUFENG SUN
Принадлежит:

The invention relates to a method for soaking and extracting available nutrient of neutral soil and calcareous soil and a combined extraction agent thereof. The combined extraction agent is a combination consisting of NaHCO33, Na2CO3 and Na2SO4; the combined extraction agent is prepared to aqueous solution which comprises 0.40mol/L to 0.50 mol/L NaHCO3, 0.020 mol/L to 0.030mol/L Na2CO3 and 0.30 mol/L to 0.40mol/L Na2SO4 and has a PH value between 8.4 and 8.6, then the solution with the mass ratio of the solution to soil between 5:1 and 25:1 is mixed to the soil which is to be measured; under the temperature condition between 20 DEG C and 30 DEG C, the solution is oscillated or stirred, soaked and extracted for 4 minutes to 20 minutes and filtered. The extraction agent has large buffering capacity and wide application range and can rapidly and high-efficiently soak and extract ammonium nitrogen, nitrate nitrogen, available phosphorus, rapidly available potassium for one time and has high ...

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Номер записи: 7
07-09-2011 дата публикации

Multi-wavelength multi-light-source diffuse reflection type colorimetric device and reflectivity measuring method

Номер: CN0102175627A
Автор: TIECHENG DUAN, XIAONING HU, JIANZHONG WU, WANFENG YAN, ZHANGQING YANG, WEIBO SU, LISHA HENG, DUAN TIECHENG, HU XIAONING, WU JIANZHONG, YAN WANFENG, YANG ZHANGQING, SU WEIBO, HENG LISHA
Принадлежит:

The invention relates to a multi-wavelength multi-light-source diffuse reflection type colorimetric device and a reflectivity measuring method. The multi-wavelength multi-light-source diffuse reflection type colorimetric device comprises a light path structure, a photoelectric detection circuit and a shell, wherein the photoelectric detection circuit comprises a microcontroller unit, a data acquisition unit, a constant-current control unit, a display unit and an input unit; the light path structure comprises a base platform, a middle cover and a top cover, wherein the middle cover and the topcover are movably connected with the base platform; the base platform is provided with a detection window which corresponds to a monochromatic light source with different wavelengths through a corresponding optical channel; an photoelectric sensor is arranged below the detection window; the middle cover is provided with a strip-shaped slit which corresponds to the detection window; the inner sideof ...

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Номер записи: 8
10-12-2008 дата публикации

Novel nessler's reagent and method for rapidly measuring soil ammonium nitrogen

Номер: CN0101319999A
Автор: DUAN TIECHENG, JIA WEI, YANG SUQIN, ZHAO YUZHENG, ZHANG GUANGJUN, ZHENG LONGKAI, LI WEIHUA, HU JIANDONG, TIECHENG DUAN, WEI JIA, SUQIN YANG, YUZHENG ZHAO, GUANGJUN ZHANG, LONGKAI ZHENG, WEIHUA LI, JIANDONG HU
Принадлежит:

The invention discloses a novel Nyquist reagent and a method using the reagent for rapidly determining soil ammonium. The main improvement of the novel Nyquist reagent lies in that proper amount of solid potassium hydroxide or sodium hydroxide is directly added in solution after the complete reaction of potassium iodide and mercuric chloride during the preparation; the novel Nyquist reagent is used for determining the soil ammonium; tartaric acid potassium sodium alkaline solution is used as masking agent, the novel Nyquist reagent is added in Arabic gum medium solution for the color reaction with ammonium ions. Alkaline is added for adjusting the alkalinity of a color reaction system for the colorimetric determination after the color is stable. The Nyquist reagent has the advantages of wide linear range, long shelf life, color stability and easy preparation. The determination method of the invention has the advantages of easy operation, good reproducibility, small error and rapid test ...

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Номер записи: 9
24-11-2010 дата публикации

Novel nessler's reagent and method for rapidly measuring soil ammonium nitrogen

Номер: CN0101319999B
Автор: LI WEIHUA, ZHANG GUANGJUN, JIA WEI, ZHAO YUZHENG, HU JIANDONG, ZHENG LONGKAI, YANG SUQIN, DUAN TIECHENG, WEIHUA LI, GUANGJUN ZHANG, WEI JIA, YUZHENG ZHAO, JIANDONG HU, LONGKAI ZHENG, SUQIN YANG, TIECHENG DUAN
Принадлежит:

The invention discloses a novel Nyquist reagent and a method using the reagent for rapidly determining soil ammonium. The main improvement of the novel Nyquist reagent lies in that proper amount of solid potassium hydroxide or sodium hydroxide is directly added in solution after the complete reaction of potassium iodide and mercuric chloride during the preparation; the novel Nyquist reagent is used for determining the soil ammonium; tartaric acid potassium sodium alkaline solution is used as masking agent, the novel Nyquist reagent is added in Arabic gum medium solution for the color reactionwith ammonium ions. Alkaline is added for adjusting the alkalinity of a color reaction system for the colorimetric determination after the color is stable. The Nyquist reagent has the advantages of wide linear range, long shelf life, color stability and easy preparation. The determination method of the invention has the advantages of easy operation, good reproducibility, small error and rapid test speed ...

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Номер записи: 10
02-06-2010 дата публикации

Method for digesting available nutrient from acid soil as well as combined digestion agent thereof

Номер: CN0101251451B
Автор: JIA WEI, LI WEIHUA, HU JIANDONG, YANG JIANFEI, ZHU XIUHONG, DUAN TIECHENG, WEI JIA, WEIHUA LI, JIANDONG HU, JIANFEI YANG, XIUHONG ZHU, TIECHENG DUAN
Принадлежит:

The invention relates to a method for soaking and extracting available nutrient of acid soil and a combined extraction agent thereof. The combined extraction agent is a combination comprising NaOAc, Na2SO4, NaF, and EDTA. The combined extraction agent is prepared to aqueous solution which comprises 0.15mol/L to 0.25mol/L NaOAc, 0.02mol/L to 0.03mol/L Na2SO4, 0.01mol/L to 0.02mol/L NaF, 0.001mol/Lto 0.002mol/L EDTA and 0.06mol/L to 0.15mol/L H2SO4 and has a PH value between 2.4 and 2.6; then the solution with the mass ratio of the solution to soil between 3 and 20 is mixed to the soil which isto be measured; under the temperature condition between 20 DEG C and 30 DEG C, the solution is oscillated or stirred, soaked and extracted for 3 minutes to 20 minutes and filtered. The combined extraction agent of the invention has strong buffering performance, wide application range and high extraction efficiency, has remarkable positive correlation with a routine measuring result and has important ...

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Номер записи: 11
19-12-2007 дата публикации

Neutral, limy soil macro effective nutrient joint extraction for flow testing service and preparation method

Номер: CN0101089588A
Автор: DUAN TIECHENG, HU JIANDONG, ZHU XIUHONG, JIA WEI, YANG JIANFEI, SUN YUFENG, TIECHENG DUAN, JIANDONG HU, XIUHONG ZHU, WEI JIA, JIANFEI YANG, YUFENG SUN
Принадлежит:

A united digestion agent used for testing constant effective nutrient of neutral and limy soil is prepared from 10-45wt% sodium ion, 10-40wt% of bicarbonate radical, 0.05-1wt% of carbonic acid radial, 0-15wt% of acetic acid radical and 10-60wt% of sulfuric acid radical. Its testing method is also disclosed.

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Номер записи: 12
27-01-2010 дата публикации

Method for extracting effective nutrient from neutral and calcareous soil as well as combined extracting agent thereof

Номер: CN0100585373C
Автор: TIECHENG DUAN, WEI JIA, XIUHONG ZHU, WEIHUA LI, JIANFEI YANG, JIANDONG HU, YUFENG SUN, DUAN TIECHENG, JIA WEI, ZHU XIUHONG, LI WEIHUA, YANG JIANFEI, HU JIANDONG, SUN YUFENG
Принадлежит:

The invention relates to a method for soaking and extracting available nutrient of neutral soil and calcareous soil and a combined extraction agent thereof. The combined extraction agent is a combination consisting of NaHCO33, Na2CO3 and Na2SO4; the combined extraction agent is prepared to aqueous solution which comprises 0.40mol/L to 0.50 mol/L NaHCO3, 0.020 mol/L to 0.030mol/L Na2CO3 and 0.30 mol/L to 0.40mol/L Na2SO4 and has a PH value between 8.4 and 8.6, then the solution with the mass ratio of the solution to soil between 5:1 and 25:1 is mixed to the soil which is to be measured; under the temperature condition between 20 DEG C and 30 DEG C, the solution is oscillated or stirred, soaked and extracted for 4 minutes to 20 minutes and filtered. The extraction agent has large buffering capacity and wide application range and can rapidly and high-efficiently soak and extract ammonium nitrogen, nitrate nitrogen, available phosphorus, rapidly available potassium for one time and has high ...

Подробнее
Номер записи: 13
24-11-2010 дата публикации

Method for measuring kalium in soil by tetraphenylboron sodium nephelometery and its screening agent

Номер: CN0101271072B
Автор: YANG SUQIN, DUAN TIECHENG, ZHAO YUZHENG, ZHANG GUANGJUN, LI WEIHUA, ZHENG LONGKAI, JIA WEI, HU JIANDONG, SUQIN YANG, TIECHENG DUAN, YUZHENG ZHAO, GUANGJUN ZHANG, WEIHUA LI, LONGKAI ZHENG, WEI JIA, JIANDONG HU
Принадлежит:

The invention discloses a method for measuring potassium by the sodium tetraphenylborate turbidimetry and a masking agent which is used by the method. The masking agent is a water solution containing 0.01 to 0.04mol/l of Cu<2+>, 0.04 to 0.10mol/l of tartaric acid and 5 to 10mol/l of H<+>; the method for measuring the potassium by the sodium tetraphenylborate turbidimetry is that: the masking agent is used for masking ammonium ion and other interfering ions in liquid under test, basic EDTA disodium salt solution is further added to carry out the auxiliary masking, basic sodium tetraphenylborate water solution is finally added, and the turbidity measurement is immediately carried out after shaking the reaction solution well. The measurement method has the advantages of simple operation, rapid and accurate measurement and low cost; the linear range thereof meets the requirements of the rapid measurement, which is suitable for the application of grass roots and agriculture popularization departments ...

Подробнее
Номер записи: 14
24-12-2008 дата публикации

Chemiluminescence composition and method for detecting soil available molybdenum in soil by using the same

Номер: CN0101328403A
Автор: LIU YANCHAO, WANG HAIJUAN, DUAN TIECHENG, MENG LEI, SUN WEITAO, LI WEIHUA, WANG ZHIRONG, YANCHAO LIU, HAIJUAN WANG, TIECHENG DUAN, LEI MENG, WEITAO SUN, WEIHUA LI, ZHIRONG WANG
Принадлежит:

The invention relates to a chemiluminescence compound and a method for determining active molybdenum in soil through the compound. The compound is a chemiluminescence system prepared from a composition A and a composition B. The composition A is a solution containing the dissolved 40 to 2,000mg/kg of SCN<->, 30 to 300mg/kg of potassium borohydride, and 0.02 to 10mg/kg of MoO4<2-> with a PH value of between 0.10 and 2.00. The composition B is a solution containing the dissolved 1.0x10<-5> to 1.0x10<-3>mol/L of luminol with a PH value of between 9.00 and 14.00. The method for determining the active molybdenum in the soil comprises the following steps of: extracting the active molybdenum in the soil through a Tamm solution; correctly determining the content of molybdenum through a chemiluminescence system after separation and trash extraction. The chemiluminescence system has a low detection limit on molybdenum, a high sensitivity and a wide linear range. The method is an ideal method for ...

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Номер записи: 15