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Synchronous observation of rising soluble bubble through quiescent solution

Yifu ZHANG , Shuai TIAN , Weizhong LI , Yongchen SONG ,

Frontiers in Energy 2009, Volume 3, Issue 3,   Pages 307-312 doi: 10.1007/s11708-009-0028-7

Abstract: An experimental method using computer image processing technology (CIPT) was proposed to observe and investigate the velocity, deformation, heat and mass transfer, etc. of a rising soluble gas (CO) bubble through a quiescent hot water. A model was set up to describe the behavior of the bubble in a visual experimental system in which a high-speed camera rose instantaneously with the movement of the bubble. A series of trajectory videos about the bubble were recorded by a computer linked to the camera. The trajectory, volume changes and rate of mass transfer of the bubble were obtained by the CIPT. It is found that the single bubble follows a rolling trajectory at the initial stage when there is mass transfer. With the volume decreasing, the disturbed behavior of the bubble becomes tempered. When the rising velocity of the bubble reaches the maximum, the velocity is nearly at a constant. The experimental and analysis results show that this method is useful for the research on the mass transfer and the movement of rising bubbles in liquid.

Keywords： soluble bubble     mass transfer     synchronous observation     computer image processing    

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The earth satellites observation analysis of natural environment change of nuclear test field in Lop

Hu Dongsheng,Zhang Huajing,Pang Xilei,Xu Bing,An Zhisheng,Zhang Guowei,Tian Xinhong

Strategic Study of CAE 2008, Volume 10, Issue 9,   Pages 31-38

Abstract:

Using earth satellite observation means, remote sensing information distilledproduction, we have roundly analyzed and made an integrated evaluation about the Lop Nur nuclear test fieldexcavating and appraising the materials gradually on the natural environment factors changing in the test field

Keywords： earth satellite observation     the nuclear test field     the nuke explosion effect and the respond process    

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Shanghai center project excavation induced ground surface movements and deformations

Guolin XU, Jiwen ZHANG, Huang LIU, Changqin REN

Frontiers of Structural and Civil Engineering 2018, Volume 12, Issue 1,   Pages 26-43 doi: 10.1007/s11709-017-0439-1

Abstract: The results from the field instrumentation showed that deflections of the site were strictly controlledThe field performance of another 21cylindrical excavations in top-down method were collected to compare

Keywords： deep excavation     foundation pit     soft clay     top-down method     field observation     ground surface movements     ground    

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Research Progress of Marine Scientific Equipment and Development Recommendations in China

Song Xiancang, Du Junfeng, Wang Shuqing, Li Huajun

Strategic Study of CAE 2020, Volume 22, Issue 6,   Pages 76-83 doi: 10.15302/J-SSCAE-2020.06.010

Abstract: addition, it provides reviews on the state-of-the-art techniques associated with the marine scientific observationplatforms, namely air–sea interface observation platform, mobile underwater observation platform, and seafloor observation network system, in the countries that are believed to lead the field, andthe marine remote-sensing satellites, marine research ships, deep-diving submersibles, and seafloor observation

Keywords： marine scientific equipment     deep-sea observation platform     air–sea interface observation     mobile underwaterobservation     seafloor observation network     equipment development    

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General modeling and optimization technique for real-world earth observation satellite scheduling

Frontiers of Engineering Management   Pages 695-709 doi: 10.1007/s42524-023-0263-3

Abstract: Over the last two decades, many modeling and optimization techniques have been developed for earth observation

Keywords： earth observation satellite     scheduling     general technique     optimization algorithm     commercial constellation    

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Field Observations of Near-Surface Wind Flow Across Expressway Embankment on the Qinghai–Tibet Plateau

Yanhu Mu,Wei Ma,Zhaohui Joey Yang,Xiaolin Li,Kun Zhang,Yuncheng Mao,

Engineering 2022, Volume 14, Issue 7,   Pages 169-180 doi: 10.1016/j.eng.2021.10.020

Abstract: This article describes a yearlong field observation of the NSWF across an experimental expressway embankment

Keywords： Near-surface wind flow     Field observation     Air-cooling structures     Linear transportation infrastructure    

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Observation of black carbon aerosol in Beijing, 2003

LOU Shujuan, MAO Jietai, WANG Meihua

Frontiers of Environmental Science & Engineering 2007, Volume 1, Issue 3,   Pages 345-349 doi: 10.1007/s11783-007-0059-4

Abstract: The objective of this study was to determine the black carbon concentration in Beijing in 2003. The aerosol properties were measured using an Aethalometer and a tapered element oscillating microbalance (TEOM) on the roof of the Physics Building of Peking University (39.99º N, 116.31º E) from July to August 2003 and from November 2003 to January 2004. The average black carbon (BC) concentrations in the summer and winter were 8.80 and 11.4 μg/m, respectively. During winter, two different cyclone cut offs were installed at the inlet of an aethalometer. The BC mass concentration in TSP, PM, and PM were obtained. The results indicated that in winter aerosol, 90% of BC exited in PM and 82.6% of BC exited in PM. The BC in PM accounted for 5.11% of the PM mass.

Keywords： carbon concentration     Beijing     tapered element     August     aethalometer    

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Design and Implementation of Meteorological Observation System Projects

Zheng Guoguang

Strategic Study of CAE 2000, Volume 2, Issue 6,   Pages 21-26

Abstract:

The current situation of the meteorololgical observation in China and the development tendency ofthe meteorological observation technology are analyzed.The principal goals of the design and implementation of the meteorological observation system projectThe overall sketch and the main items of the “Meteorological Observation Automation Project (Phase

Keywords： atmosphere observation     observational automation     engineering design and implementation    

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Considerations on Promoting the Smooth Development of National Land Observation System

Guo Jianning

Strategic Study of CAE 2006, Volume 8, Issue 10,   Pages 47-53

Abstract:

Drawing on the experience of land observation cause in developed countries, the thesis has depictedthe work done in China´s land observation system.By doing so the smooth developments of national land observation system can be achieved.

Keywords： satellite application     remote sensing     land observation system     data sharing    

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Development of Marine Equipment for Underwater Stereoscopic Observation

Ma Rui, Zhao Xiutao, Liu Cungen

Strategic Study of CAE 2020, Volume 22, Issue 6,   Pages 19-25 doi: 10.15302/J-SSCAE-2020.06.003

Abstract:

Establishing an underwater stereoscopic observation network to obtainThis study first analyzes the need and necessity of developing the underwater stereoscopic observationdevelopment status of the equipment in China and abroad, further analyzes the problems faced by China’s fieldChina has made great progress in technologies regarding marine observation platforms, but it still lagsThe big data obtained from ocean observation does not match the actual demand, and the ocean sensors

Keywords： ocean observation     sea floor observatory network     underwater vehicle     underwater sensor    

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The Chinese polar atmospheric sciences observation engineering system

Lu LongHua,Bian Lingen

Strategic Study of CAE 2012, Volume 14, Issue 9,   Pages 72-84

Abstract: Formed by the manual weather station, automatic weather station and weather observation on the &ldquoChinese polar atmospheric science observation system is gradually formed including the meteorologicaloperational observation and short term investigation study.

Keywords： Antarctic     Arctic     atmospheric sciences     observation engineering    

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biochar and earthworm interactively affected CO and NO emissions in agricultural and forest soils: Observation

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 3, doi: 10.1007/s11783-021-1473-8

Abstract:

• Earthworms increase CO2 and N2O emissions in agricultural and forest soil.

Keywords： Carbon sequestration     Forest soil     Cattle manure biochar     Greenhouse gas emissions     Soil fauna    

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Development and application of earth observation and nation security

Zhou Zhixing,Wu Zhigang,Ji Yan

Strategic Study of CAE 2008, Volume 10, Issue 6,   Pages 28-32

Abstract:

The foreign development of the earth observation technology is brieflyThe development trend of the earth observation technology is described from the angle of nation securityBesides, the shortage of the earth observation system in our country is explained on the base of thediscussion on the development actuality of the earth observation technology in China.The earth observation system's effect is more and more important on the economy building and technology

Keywords： earth observation     nation security     space information    

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The abundance, characteristics and diversity of microplastics in the South China Sea: Observation around

Hongzhe Chen , Sumin Wang , Huige Guo , Yunlong Huo , Hui Lin , Yuanbiao Zhang

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 1,   Pages 9-9 doi: 10.1007/s11783-021-1443-1

Abstract: Surrounded by emerging markets with considerable plastic consumption, the South China Sea has been a focus area of microplastic research. A survey on the floating microplastics (>0.3 mm) and microplastics ingested by fish and mollusks was conducted around three remote islands here. Compared with the results from several previous studies, a high abundance of floating microplastics (with a median of 1.9 × 105 items/km2 or 0.7 items/m3) was observed, revealing another “hot spot” for microplastics. Polyolefin, especially polypropylene, was the main component. The diversity index and evenness index were calculated and evaluated based on the composition of microplastics. The characteristic peaks of Raman spectra concerning pigmented microplastics were provided. Transparent sheets/films were predominant in the water sample, which was quite different from a similar study in this sea area (8.9% for film), and only 16.4% of floating microplastics (>0.3 mm) were fibers/lines, implying that the main sources of floating microplastics (>0.3 mm) might be household/agricultural consumption activities. The transparent fiber/line was also dominant in organisms. It is suggested that the main sources of microplastics ingested by organisms might be both fabric fibers and fishing/aquaculture.
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Clinical characteristics in lymphangioleiomyomatosis-related pulmonary hypertension: an observation on

Xiuxiu Wu, Wenshuai Xu, Jun Wang, Xinlun Tian, Zhuang Tian, Kaifeng Xu

Frontiers of Medicine 2019, Volume 13, Issue 2,   Pages 259-266 doi: 10.1007/s11684-018-0634-z

Abstract: Lymphangioleiomyomatosis (LAM) is a rare diffuse cystic lung disease. Knowledge on LAM-related pulmonary hypertension (PH) is limited. This study aimed to analyze the clinical characteristics of LAM with elevated pulmonary artery pressure (PAP) and evaluate the potential efficacy of sirolimus. The study involved 50 LAM patients who underwent echocardiography. According to the tricuspid regurgitation velocity (TRV), these patients were divided into the TRV≤2.8 m/s group and TRV>2.8 m/s group. Both groups comprised 25 females with an average age of 38.6±8.1 and 41.5±8.9 years. In the TRV>2.8 m/s group, the estimated systolic PAP (SPAP) was significantly elevated (52.08±12.45 mmHg vs. 30.24±5.25mmHg, <0.01). Linear analysis showed that SPAP was correlated with forced expiratory volume in 1 s (FEV ), diffusing capacity of the lungs for carbon monoxide, alveolar arterial oxygen gradient (P O ), and 6 min walking distance ( = −0.392, −0.351, 0.450, and −0.591, respectively; <0.05), in which P O was a risk factor for SPAP elevation ( = 0.064, OR= 1.066, <0.05). Moreover, in 10 patients who received sirolimus therapy, SPAP decreased from 57.0±12.6 mmHg to 35.2±11.1 mmHg. The study showed that LAM patients with PH exhibit poor pulmonary function and hypoxemia and may benefit from sirolimus treatment.

Keywords： lymphangioleiomyomatosis     pulmonary hypertension     pulmonary function     hypoxemia     sirolimus    

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Title Author Date Type Operation

Synchronous observation of rising soluble bubble through quiescent solution

Yifu ZHANG , Shuai TIAN , Weizhong LI , Yongchen SONG ,

Journal Article

The earth satellites observation analysis of natural environment change of nuclear test field in Lop

Hu Dongsheng,Zhang Huajing,Pang Xilei,Xu Bing,An Zhisheng,Zhang Guowei,Tian Xinhong

Journal Article

Shanghai center project excavation induced ground surface movements and deformations

Guolin XU, Jiwen ZHANG, Huang LIU, Changqin REN

Journal Article

Research Progress of Marine Scientific Equipment and Development Recommendations in China

Song Xiancang, Du Junfeng, Wang Shuqing, Li Huajun

Journal Article

General modeling and optimization technique for real-world earth observation satellite scheduling

Journal Article

Field Observations of Near-Surface Wind Flow Across Expressway Embankment on the Qinghai–Tibet Plateau

Yanhu Mu,Wei Ma,Zhaohui Joey Yang,Xiaolin Li,Kun Zhang,Yuncheng Mao,

Journal Article

Observation of black carbon aerosol in Beijing, 2003

LOU Shujuan, MAO Jietai, WANG Meihua

Journal Article

Design and Implementation of Meteorological Observation System Projects

Zheng Guoguang

Journal Article

Considerations on Promoting the Smooth Development of National Land Observation System

Guo Jianning

Journal Article

Development of Marine Equipment for Underwater Stereoscopic Observation

Ma Rui, Zhao Xiutao, Liu Cungen

Journal Article

The Chinese polar atmospheric sciences observation engineering system

Lu LongHua,Bian Lingen

Journal Article

biochar and earthworm interactively affected CO and NO emissions in agricultural and forest soils: Observation

Journal Article

Development and application of earth observation and nation security

Zhou Zhixing,Wu Zhigang,Ji Yan

Journal Article

The abundance, characteristics and diversity of microplastics in the South China Sea: Observation around

Hongzhe Chen , Sumin Wang , Huige Guo , Yunlong Huo , Hui Lin , Yuanbiao Zhang

Journal Article

Clinical characteristics in lymphangioleiomyomatosis-related pulmonary hypertension: an observation on

Xiuxiu Wu, Wenshuai Xu, Jun Wang, Xinlun Tian, Zhuang Tian, Kaifeng Xu

Journal Article