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Using balance of seasonal herbage supply and demand to inform sustainable grassland management on the Qinghai–Tibetan

Xinquan ZHAO, Liang ZHAO, Qi LI, Huai CHEN, Huakun ZHOU, Shixiao XU, Quanmin DONG, Gaolin WU, Yixin HE

Frontiers of Agricultural Science and Engineering 2018, Volume 5, Issue 1,   Pages 1-8 doi: 10.15302/J-FASE-2018203

Abstract: To mitigate the impacts of grassland degradation on the Qinghai–Tibetan Plateau (QTP), in recent decades

Keywords： grassland degradation     grassland management     integrated rangeland-cropland-livestock production system     Qinghai–Tibetan    

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Changes in Headwater Streamflow from Impacts of Climate Change in the Tibetan Plateau

Zhengxin Bao,Jianyun Zhang,Yanqing Lian,Guoqing Wang,Junliang Jin,Zhongrui Ning,Jiapeng Zhang,Yanli Liu,Xiaojun Wang,

Engineering doi: 10.1016/j.eng.2023.05.025

Abstract: The Tibetan Plateau (TP) is the headwater of the Yangtze, Yellow, and the transboundary Yarlung Tsangpo

Keywords： Tibetan Plateau     Streamflow     Change Trend     Climate Change    

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“Heavenly Road”: The Qinghai–Tibet Railway

Yongfu SUN

Frontiers of Engineering Management 2020, Volume 7, Issue 2,   Pages 304-307 doi: 10.1007/s42524-019-0079-3

Abstract: Xiaobo WANG. [J]. Front. Eng, 2019, 6(1): 131-137.Peter REDFERN, Hua ZHONG. [J]. Front. Eng, 2017, 4(2): 193-200.Qixiang FAN. [J]. Front. Eng, 2017, 4(2): 231-237.Ming-zhou Liu,Cong-hu Liu,Mao-gen Ge,Yuan Zhang,Qing-hua Zhu. [J]. Front. Eng, 2016, 3(2): 144-146.Yu Zhao,Sheng-quan Wang,Ke-chao Zhu. [J]. Front. Eng, 2015, 2(1): 35-38.Ru-gui Chen,Jia-meng Chen. [J]. Front. Eng, 2014, 1(1): 52-61.An Wang. [J]. Front. Eng, 2014, 1(1): 13-17.

Keywords： permafrost protection     sustainable development     health guarantee system    

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Practice and understanding of developing new technologies and equipment for green and low-carbon production of oilfields

He LIU, Jianwen YAN, Siwei MENG, Qinghai YANG, Zixiu YAO, Shijia ZHU

Frontiers of Engineering Management 2019, Volume 6, Issue 4,   Pages 517-523 doi: 10.1007/s42524-019-0061-0

Abstract: The core of China’s low-carbon development includes optimization of industrial structure, clean energy technologies, emission reduction technologies, and innovation of relevant systems and institutions. China National Petroleum Corporation (CNPC) has always been a proactive participant in developing low-carbon economy, shouldering the responsibilities of safeguarding oil and gas supply, conserving energy, and reducing emission. Therefore, CNPC fulfills those responsibilities as a substantial part of its overall strategy. Guided by low carbon and driven by innovation, petroleum corporations have taken constant innovation of low-carbon technologies, especially the development of green and low-carbon petroleum engineering technologies and equipment, as major measures for energy conservation and emission reduction. Large-scale development mode of unconventional resource anhydrous fracturing should be innovated. And supercritical CO should be used to replace water for fracturing operation, in order to achieve multiple objectives of CO burying, conserve water resource, improve single well production and ultimate recovery, realizing reduced emission and efficient utilization of CO resources. Artificial lifting energy-saving and efficiency-increasing technologies and injection-production technology in the same well should also be innovated. Energy consumption of high water-cut wells is reduced to support the new low-carbon operation mode of high water-cut oilfields and realize energy saving and efficiency improvement during oil production by developing the operation efficiency of the lifting system and reducing the ineffective lifting of formation water. These technologies have been widely recognized by local and international experts and have greatly enhanced CNPC’s international influence. This study expounds the key technologies and equipment with regard to the development of green and low-carbon petroleum engineering and provide relevant suggestions.

Keywords： low carbon     energy conservation and emission reduction     petroleum engineering technology     petroleum equipment    

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The effects of sensitive region over Tibetan Plateau on disastrous weather and climate and its monitoring

Xu Xiangde

Strategic Study of CAE 2009, Volume 11, Issue 10,   Pages 96-107

Abstract: In view of the roles of the Tibetan Plateau as the upstream key region for flooding, heavy rainfall,We have designed and constructed this new-generation observing network on the Tibetan Plateau and its

Keywords： Tibetan plateau     upstream key sensitive region     disastrous weather     early prediction and warning    

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The observation of water-ice-air-ecosystem interactions and its application over the Tibetan Plateau

Ma Yaoming

Strategic Study of CAE 2012, Volume 14, Issue 9,   Pages 28-34

Abstract:

The Tibetan Plateau, with the most prominent and complicated terrainLike the Arctic and Antarctica, the Tibetan Plateau area is one of the most sensitive areas respondingPlateau is to establish the comprehensive research stations over the different land surfaces of the TibetanWith support from various agencies in the People’s Republic of China, the Tibetan Observation andFinally, the difficulty in observation and study of water-ice-air-ecosystem interactions of the Tibetan

Keywords： Tibetan Plateau     water-ice-air-ecosystem interactions     preliminary observational analysis results-O13    

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Abundance and distribution of ammonia-oxidizing archaea in Tibetan and Yunnan plateau agricultural soils

Kun DING,Xianghua WEN,Liang CHEN,Daishi HUANG,Fan FEI,Yuyang LI

Frontiers of Environmental Science & Engineering 2014, Volume 8, Issue 5,   Pages 693-702 doi: 10.1007/s11783-014-0635-3

Abstract: As low oxygen and high ultraviolet (UV) exposure might significantly affect the microbial existence in plateau, it could lead to a specialized microbial community. To determine the abundance and distribution of ammonia-oxidizing archaea (AOA) in agricultural soil of plateau, seven soil samples were collected respectively from farmlands in Tibet and Yunnan cultivating the wheat, highland-barley, and colza, which are located at altitudes of 3200–3800 m above sea level. Quantitative PCR (q-PCR) and clone library targeting on gene were used to quantify the abundances of AOA and ammonia-oxidizing bacteria (AOB), and characterize the community structures of AOA in the samples. The number of AOA cells (9.34 × 10 –2.32 × 10 g soil) was 3.86–21.84 times greater than that of AOB cells (6.91 × 10 –1.24 × 10 g soil) in most of the samples, except a soil sample cultivating highland-barley with an AOA/AOB ratio of 0.90. Based Kendall’s correlation coefficient, no remarkable correlation between AOA abundance and the environmental factor was observed. Additionally, the diversities of AOA community were affected by total nitrogen and organic matter concentration in soils, suggesting that AOA was probably sensitive to several environmental factors, and could adjust its community structure to adapt to the environmental variation while maintaining its abundance.

Keywords： ammonia-oxidizing archaea     ammonia-oxidizing bacteria     quantitative PCR     clone library     plateau    

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Climate change and sandy land development in Qinghai Lake Watershed, China

SUN Yongliang, LI Xiaoyan, LIU Lianyou, XU Heye, ZHANG Dengshan

Frontiers of Environmental Science & Engineering 2008, Volume 2, Issue 3,   Pages 340-348 doi: 10.1007/s11783-008-0045-5

Abstract: The Qinghai Lake Watershed, containing the largest saline lake in northwest of China, has suffered fromThe Qinghai Lake was significantly shrinking ( < 0.01) and provided abundant sediments for Aeolian erosionAs a result, the sandy land was mainly born on the east bank of Qinghai Lake.
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The predictive value of chromosome 8p deletion for metastasis of hepatocellular carcinoma: a summary of works in 10 years

QIN Lunxiu, TANG Zhaoyou, GUAN Xinyuan, YE Qinghai, JIA Huliang, REN Ning

Frontiers of Medicine 2008, Volume 2, Issue 3,   Pages 211-215 doi: 10.1007/s11684-008-0041-y

Abstract: Hepatocellular carcinoma (HCC) represents an extremely poor prognostic cancer, which is mainly due to the high frequency of metastasis/recurrence after surgical operation. Exploring the molecular mechanisms involved in HCC metastasis could be helpful in the prediction and early diagnosis of HCC recurrence and could also provide new therapeutic targets for HCC metastasis. In the recent decade, we analyzed the genomic aberrations of the clinical specimens, as well as the metastatic models and cell lines of human HCC to identify the genetic markers related to HCC metastasis and to verify their clinical values in the prediction and control of metastasis of HCC. Using the comparative genomic hybridization (CGH) technique, we compared the differences of chromosomal aberrations between primary HCC tumors and their matched metastatic lesions, and found that chromosome 8p deletions might contribute to HCC metastasis. This novel finding was further confirmed by comparison between nude mice models of HCC with different metastatic potentials. By the more sensitive genome-wide microsatellite analysis, 8p deletion was defined to 8p23.3 and 8p11.2, which are two likely regions harboring metastasis-related genes of HCC. Using ‘8p-specific’ microarrays, two novel metastatic suppressors ( and ) were identified, and were proven to suppress invasion and metastasis of HCC. Clinical studies indicate that 8p deletion detected in HCC or circulating plasma DNA of patients is a useful predictor for metastatic recurrence and prognosis, even for patients with early stage HCC. These novel findings are regarded as important advances in the study of the molecular mechanisms of HCC metastasis, which provide not only a holistic view on the molecular cytogenetic bases of HCC metastasis, but also candidate regions for further study to identify metastatic suppressor genes.

Keywords： sensitive genome-wide     prediction     genome-wide microsatellite     frequency     Hepatocellular carcinoma    

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applying platform for the new generation of the comprehensive atmospheric observing system over the Tibetan

Zhang Renhe,Xu Xiangde

Strategic Study of CAE 2012, Volume 14, Issue 9,   Pages 102-112

Abstract: ">A China-Japan cooperative JICA (Japan international cooperation agency) project on monitoring the TibetanOver the Tibetan Plateau and its surrounding region, the JICA/Tibet Project set up a comprehensive atmosphericmeteorological data, but also raises both quality and quantity of the atmospheric observing data over the TibetanThe comprehensive three-dimension atmospheric observing system over the Tibetan Plateau and its surroundingProject has important values not only for the scientific researches on the weather and climate over the Tibetan

Keywords： Tibetan Plateau     comprehensive atmospheric monitoring     JICA/Tibet Project    

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Climate change and the engineering projects of the Qinghai-Tibet Plateau

Ren Guoyu

Strategic Study of CAE 2012, Volume 14, Issue 9,   Pages 90-95

Abstract:

Evident change in climate of the Qinghai-Tibet Plateau occurred in the

Keywords： climate change     adaptation     ecosystem     environment     engineering projects     Qinghai-Tibet Plateau    

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Understanding of Qinghai-Tibet Railway

余春红

Strategic Study of CAE 2003, Volume 5, Issue 11,   Pages 92-94

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Simultaneous removal of arsenate and fluoride from water by Al-Fe (hydr)oxides

Junlian QIAO, Zimin CUI, Yuankui SUN, Qinghai HU, Xiaohong GUAN

Frontiers of Environmental Science & Engineering 2014, Volume 8, Issue 2,   Pages 169-179 doi: 10.1007/s11783-013-0533-0

Abstract: Al-Fe (hydr)oxides with different Al/Fe molar ratios (4∶1, 1∶1, 1∶4, 0∶1) were prepared using a co-precipitation method and were then employed for simultaneous removal of arsenate and fluoride. The 4Al:Fe was superior to other adsorbents for removal of arsenate and fluoride in the pH range of 5.0–9.0. The adsorption capacity of the Al-Fe (hydr)oxides for arsenate and fluoride at pH 6.5±0.3 increased with increasing Al content in the adsorbents. The linear relationship between the amount of OH released from the adsorbent and the amount of arsenate or fluoride adsorbent by 4Al:Fe indicated that the adsorption of arsenate and fluoride by Al-Fe (hydr)oxides was realized primarily through quantitative ligand exchange. Moreover, there was a very good correlation between the surface hydroxyl group densities of Al-Fe (hydr)oxides and their adsorption capacities for arsenate or fluoride. The highest adsorption capacity for arsenate and fluoride by 4Al:Fe is mainly ascribed to its highest surface hydroxyl group density besides its largest pH . The dosage of adsorbent necessary to remove arsenate and fluoride to meet the drinking water standard was mainly determined by the presence of fluoride since fluoride was generally present in groundwater at much higher concentration than arsenate.

Keywords： Al-Fe (hydr)oxides     groundwater     adsorption     hydroxyl group     ligand exchange    

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Effects of water quality on the coagulation performances of humic acids irradiated with UV light

Wendong WANG,Qinghai FAN,Zixia QIAO,Qin YANG,Yabo WANG,Xiaochang WANG

Frontiers of Environmental Science & Engineering 2015, Volume 9, Issue 1,   Pages 147-154 doi: 10.1007/s11783-014-0749-7

Abstract: The presence of humic acid in drinking water treatment has received significant attention in recent years because of its adverse effects on the removal of many pollutants in coagulation. In this paper, the effects of water quality including pH, turbidity, alkalinity, and hardness on the removal of humic acid were investigated in a UV light hybridized coagulation process. Our results suggested that UV light radiation could effectively improve the removal rate of humic acid in coagulation under both neutral and basic conditions, and the variations of the selected water quality parameters had little adverse effect on the function of UV light. After UV light radiation, the removal rate of the nitro-humic acid (NHA) increased from 20% to 60% in coagulation, and increased further to 75% and 85% for the raw waters with 10.0 NTU kaolin and 100 mg·L hardness, respectively. In addition to NHA, the removal rates of the humic acid extracted from peat coal (PHA) and the humic acid provided by Japan metals and chemicals company (JHA) in coagulation were also improved, both in the range of 80%–90% after undergoing UV light radiation. By changing the radiation location from prior to coagulation to the flocculation process, similar experimental results were obtained. The formation of positive charged sites after UV light radiation was considered to be the primary factor that led to an enhanced removal of the humic acid in coagulation.

Keywords： coagulation     drinking water     humic acid     UV light radiation     water quality    

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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: observation of the NSWF across an experimental expressway embankment, the first of its kind on the Qinghai

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

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Title Author Date Type Operation

Using balance of seasonal herbage supply and demand to inform sustainable grassland management on the Qinghai–Tibetan

Xinquan ZHAO, Liang ZHAO, Qi LI, Huai CHEN, Huakun ZHOU, Shixiao XU, Quanmin DONG, Gaolin WU, Yixin HE

Journal Article

Changes in Headwater Streamflow from Impacts of Climate Change in the Tibetan Plateau

Zhengxin Bao,Jianyun Zhang,Yanqing Lian,Guoqing Wang,Junliang Jin,Zhongrui Ning,Jiapeng Zhang,Yanli Liu,Xiaojun Wang,

Journal Article

“Heavenly Road”: The Qinghai–Tibet Railway

Yongfu SUN

Journal Article

Practice and understanding of developing new technologies and equipment for green and low-carbon production of oilfields

He LIU, Jianwen YAN, Siwei MENG, Qinghai YANG, Zixiu YAO, Shijia ZHU

Journal Article

The effects of sensitive region over Tibetan Plateau on disastrous weather and climate and its monitoring

Xu Xiangde

Journal Article

The observation of water-ice-air-ecosystem interactions and its application over the Tibetan Plateau

Ma Yaoming

Journal Article

Abundance and distribution of ammonia-oxidizing archaea in Tibetan and Yunnan plateau agricultural soils

Kun DING,Xianghua WEN,Liang CHEN,Daishi HUANG,Fan FEI,Yuyang LI

Journal Article

Climate change and sandy land development in Qinghai Lake Watershed, China

SUN Yongliang, LI Xiaoyan, LIU Lianyou, XU Heye, ZHANG Dengshan

Journal Article

The predictive value of chromosome 8p deletion for metastasis of hepatocellular carcinoma: a summary of works in 10 years

QIN Lunxiu, TANG Zhaoyou, GUAN Xinyuan, YE Qinghai, JIA Huliang, REN Ning

Journal Article

applying platform for the new generation of the comprehensive atmospheric observing system over the Tibetan

Zhang Renhe,Xu Xiangde

Journal Article

Climate change and the engineering projects of the Qinghai-Tibet Plateau

Ren Guoyu

Journal Article

Understanding of Qinghai-Tibet Railway

余春红

Journal Article

Simultaneous removal of arsenate and fluoride from water by Al-Fe (hydr)oxides

Junlian QIAO, Zimin CUI, Yuankui SUN, Qinghai HU, Xiaohong GUAN

Journal Article

Effects of water quality on the coagulation performances of humic acids irradiated with UV light

Wendong WANG,Qinghai FAN,Zixia QIAO,Qin YANG,Yabo WANG,Xiaochang WANG

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