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Frontiers of Agricultural Science and Engineering 2021, Volume 8, Issue 3, Pages 416-431 doi: 10.15302/J-FASE-2021412
Absolute yield and land use efficiency can be higher in multicrops. Though this phenomenon is common, it is not always the case. Also, these two benefits are frequently confused and do not necessarily occur together. Cropping choices become more complex when considering that multicrops are subject to strong spatial and temporal variation in average soil moisture, which will worsen with climate change. Intercropping in agroecosystems is expected to buffer this impact by favoring resistance to reduced humidity, but there are few empirical/experimental studies to validate this claim. It is not clear if relatively higher multicrop yield and land use efficiency will persist in the face of reduced soil moisture, and how the relation between these benefits might change. Here, we present a relatively simple framework for analyzing this situation. We propose a relative multicrop resistance (RMR) index that captures all possible scenarios of absolute and relative multicrop overyield under water stress. We dissect the ecological components of RMR to understand the relation between higher multicrop yield and land use efficiency and the ecological causes of different overyield scenarios. We demonstrate the use of this framework with data from a 128 microplot greenhouse experiment with small annual crops, arranged as seven-species multicrops and their corresponding monocrops, all under two contrasting watering regimes. We applied simple but robust statistical procedures to resulting data (based on bootstrap methods) to compare RMR, and its components, between different plants/plant parts. We also provide simple graphical tools to analyze the data.
Keywords: agroecosystem sustainability crop overyielding intercrop drought resistance overyield ecological components
Strategy on the Development of Energy “Golden Triangle” Erea
The Research Group of “Strategic Research on the Development of Energy ‘Golden Triangle’ Erea”
Strategic Study of CAE 2015, Volume 17, Issue 9, Pages 18-28
Keywords: energy “golden triangle” comparative advantage strategic opportunity ecosystem sustainable development
Taking advantage of drug resistance, a new approach in the war on cancer
Liqin Wang, Rene Bernards
Frontiers of Medicine 2018, Volume 12, Issue 4, Pages 490-495 doi: 10.1007/s11684-018-0647-7
Keywords: cancer drug resistance genetic screens senescence targeted therapy
Tang Yongchuan,Pan Yunhe, Zhang Xue, Hang Jiangjie
Strategic Study of CAE 2019, Volume 21, Issue 4, Pages 60-68 doi: 10.15302/J-SSCAE-2019.04.003
EXPLORING THE RELATIVE ADVANTAGES OF LOCAL INNOVATION IN AGROFORESTRY
Frontiers of Agricultural Science and Engineering 2023, Volume 10, Issue 1, Pages 61-72 doi: 10.15302/J-FASE-2022476
● Promotion of local sustainable innovation developed by forest farmers.
Keywords: agroforestry forest farmers local innovation relative advantage social forestry
The Development and Comparative Analysis of Engineering Project Management Modes
Ji-wei Zhu,Li-nan Zhou,Ming-yuan Yu,Zhao Zhai
Frontiers of Engineering Management 2015, Volume 2, Issue 4, Pages 351-358 doi: 10.15302/J-FEM-2015060
Keywords: engineering projects management mode comparative analysis development trend
Comparative lipidomic analysis of
Bin QIAO, Hong-Chi TIAN, Ying-Jin YUAN
Frontiers of Chemical Science and Engineering 2012, Volume 6, Issue 4, Pages 461-469 doi: 10.1007/s11705-012-1223-3
Keywords:
lipidomics
systems biology
phospholipids
stirred-tank
Last Planner System and Scrum: Comparative analysis and suggestions for adjustments
Roshan POUDEL, Borja GARCIA de SOTO, Eder MARTINEZ
Frontiers of Engineering Management 2020, Volume 7, Issue 3, Pages 359-372 doi: 10.1007/s42524-020-0117-1
Keywords: Lean Construction Last Planner System Agile Scrum comparative analysis AEC projects project teams
Layer-like FAU-type zeolites: A comparative view on different preparation routes
Bastian Reiprich, Tobias Weissenberger, Wilhelm Schwieger, Alexandra Inayat
Frontiers of Chemical Science and Engineering 2020, Volume 14, Issue 2, Pages 127-142 doi: 10.1007/s11705-019-1883-3
Keywords: FAU hierarchical zeolite layer-like morphology
Eric C. H. Lai,Chung Ngai Tang
Frontiers of Medicine 2015, Volume 9, Issue 3, Pages 356-360 doi: 10.1007/s11684-015-0404-0
Robotic system has been increasingly used in pancreatectomy. However, the effectiveness of this method remains uncertain. This study compared the surgical outcomes between robot-assisted laparoscopic distal pancreatectomy and conventional laparoscopic distal pancreatectomy. During a 15-year period, 35 patients underwent minimally invasive approach of distal pancreatectomy in our center. Seventeen of these patients had robot-assisted laparoscopic approach, and the remaining 18 had conventional laparoscopic approach. Their operative parameters and perioperative outcomes were analyzed retrospectively in a prospective database. The mean operating time in the robotic group (221.4 min) was significantly longer than that in the laparoscopic group (173.6 min) (P = 0.026). Both robotic and conventional laparoscopic groups presented no significant difference in spleen-preservation rate (52.9% vs. 38.9%) (P = 0.505), operative blood loss (100.3 ml vs. 268.3 ml) (P = 0.29), overall morbidity rate (47.1% vs. 38.9%) (P = 0.73), and post-operative hospital stay (11.4 days vs. 14.2 days) (P = 0.46). Both groups also showed no perioperative mortality. Similar outcomes were observed in robotic distal pancreatectomy and conventional laparoscopic approach. However, robotic approach tended to have the advantages of less blood loss and shorter hospital stay. Further studies are necessary to determine the clinical position of robotic distal pancreatectomy.
Keywords: distal pancreatectomy pancreatic neoplasm robotic surgery
Zhiqiang XIA,Xin CHEN,Cheng LU,Meiling ZOU,Shujuan WANG,Yang ZHANG,Kun PAN,Xincheng ZHOU,Haiyan WANG,Wenquan WANG
Frontiers of Agricultural Science and Engineering 2016, Volume 3, Issue 4, Pages 295-307 doi: 10.15302/J-FASE-2016126
Keywords: cassava comparative transcriptomics energy transport photosynthesis starch synthesis
The current phosphate recycling situation in China and Germany: a comparative review
Qing XUE, Xinyue HE, Saskia D. SACHS, Gero C. BECKER, Tao ZHANG, Andrea KRUSE
Frontiers of Agricultural Science and Engineering 2019, Volume 6, Issue 4, Pages 403-418 doi: 10.15302/J-FASE-2019287
Phosphorus (P) is an indispensable element for organisms but the primary source of P—mineral phosphate resources—are non-renewable. Agricultural production has a high demand for fossil phosphate resources, but the resulting phosphate-rich residues are lack of management. This leads to rapid reserves depletion and severe phosphate pollution risks. One sustainable way is to reuse the phosphate dispersed in various residues such as sewage sludge and livestock manure. Diverse techniques have emerged to recover phosphate from wastes to close the phosphate cycle. While it is a global issue, the regional situations regarding potential phosphate scarcity and its management differ strongly. China is rich in phosphate resources, but over-exploitation has greatly increased the risk of phosphate rocks depletion, while in Germany the P resources depend on imports, but there is commitment to keep a balance between import and utilization. This had led to great differences in the way the two countries deal with the “re-use” of phosphate in waste. China is now in a transition phase from the simple terminal pollution control to “waste” reuse and nutrient resources recycling. One sign of this tendency is the mandatory garbage classification and preparation for further processing and recycling. This was first implemented in Shanghai in 2019, whereas Germany has been following the legal framework for waste management since the 19th century. There are a series of laws to control the nutrient loss from municipal and agricultural activities, as for instance with sewage sludge ordinance and fertilizer legislation. Many of these laws have been newly revised recently. Sewage sludge cannot be directly utilized on farmland as organic fertilizer any more. Alternatively, phosphate and other nutrients should be recovered from sewage sludge. Advanced phosphate recovery technologies and related nutrient recycling schemes are proceeding. This review summarizes the current situation of phosphate-containing residues management and phosphate reuse in China and Germany. The state legislation and policies, which would affect the phosphate recycling concept are presented as well. As there are various kinds of phosphate-containing residues, different phosphate recovery technologies can be applied. Those technologies are discussed from their mechanism and suitability.
Keywords: phosphate recovery manure sewage sludge ordinances technologies
International Comparative Study on the Setting of Medical Specialty Catalogue and Countermeasures
Yu Zhongguang, Zhang Pengjun, Zhang Zhixin, Wang Chen
Strategic Study of CAE 2020, Volume 22, Issue 1, Pages 139-145 doi: 10.15302/J-SSCAE-2020.01.018
The medical specialty catalogue is of great significance for promoting the development of the medical discipline and cultivating qualified medical talents; therefore, a comprehensive and scientific medical specialty catalogue becomes even more important in the context of constructing first-class disciplines in colleges and universities. To promote the progressive development of medical disciplines in China, this research sorted out the medical specialty category by literature analysis, and systematically compared the features and category of medical specialty among the U.S. and the U.K. and China. Several major problems are raised as follow: non-uniform medical specialty and sub-specialty category, outdated arrangement of specialties in quantities and content, premature entry into sub-specialty training, inconsistent categories with standardized residential training, etc. To tackle the problems above, this research suggests that the medical specialty category should be in track with global standard, unified with interdisciplinary approach,and standardized admission and exit criteria be set up, which will prepare future qualified health professionals and promote the advancement of medical disciplines.
Keywords: medicine specialty catalogue clinical medicine comparative analysis
Likun Yang,Yang Wang,Qian Mo,Zhishun Liu
Frontiers of Medicine 2017, Volume 11, Issue 1, Pages 129-136 doi: 10.1007/s11684-016-0491-6
Electroacupuncture (EA) at Zhongliao (BL33) can improve the symptoms of overactive bladder (OAB), such as urinary frequency, urgency, and incontinence. However, its performance compared with other acupoints remains unclear. This study investigated the effects of EA at BL33 with deep needling on rats with OAB by detecting urodynamics in eight groups: no intervention group, D-BL33 group (deep needling at BL33), S-BL33 group (shallow needling at BL33), non-acupoint group (needling at the non-acupoint next to BL33), Weizhong (BL40) group, Sanyinjiao (SP6) group, Tongtian (BL7) group, and Hegu (LI4) group. Results revealed that EA at BL33 with deep needling, BL40, and SP6 prolonged the intercontraction interval (ICI) of rats with OAB (P=0.001, P=0.005, P=0.046, respectively, post-treatment vs. post-modeling). Furthermore, the change in ICI from post-modeling in the D-BL33 group was significantly greater than those of the no intervention and other EA groups (all P<0.01). Significantly shortened vesical micturition time (VMT) and elevated maximum detrusor pressure (MDP) were also observed in the D-BL33 group (P=0.017 and P=0.024, respectively, post-treatment vs. post-modeling). However, no statistically significant differences in the changes of VMT and MDP from post-modeling were observed between D-BL33 and the other EA groups. In conclusion, EA at BL33 with deep needling may inhibit acetic-acid-induced OAB more effectively.
Keywords: overactive bladder electroacupuncture acupuncture points
An autonomous miniature wheeled robot based on visual feedback control
CHEN Haichu
Frontiers of Mechanical Engineering 2007, Volume 2, Issue 2, Pages 197-200 doi: 10.1007/s11465-007-0033-7
Keywords: measuring distance autonomous locomotion advantage navigation
Title Author Date Type Operation
HOW MULTISPECIES INTERCROP ADVANTAGE RESPONDS TO WATER STRESS: A YIELD-COMPONENT ECOLOGICAL FRAMEWORK
Journal Article
Strategy on the Development of Energy “Golden Triangle” Erea
The Research Group of “Strategic Research on the Development of Energy ‘Golden Triangle’ Erea”
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Taking advantage of drug resistance, a new approach in the war on cancer
Liqin Wang, Rene Bernards
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Status Quo of International Cooperation in Competitive Industries and Manufacturing in the Six Economic Corridors along the Belt and Road
Tang Yongchuan,Pan Yunhe, Zhang Xue, Hang Jiangjie
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The Development and Comparative Analysis of Engineering Project Management Modes
Ji-wei Zhu,Li-nan Zhou,Ming-yuan Yu,Zhao Zhai
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Last Planner System and Scrum: Comparative analysis and suggestions for adjustments
Roshan POUDEL, Borja GARCIA de SOTO, Eder MARTINEZ
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Layer-like FAU-type zeolites: A comparative view on different preparation routes
Bastian Reiprich, Tobias Weissenberger, Wilhelm Schwieger, Alexandra Inayat
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Robotic distal pancreatectomy versus conventional laparoscopic distal pancreatectomy: a comparative study
Eric C. H. Lai,Chung Ngai Tang
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Comparative transcriptomics revealed enhanced light responses, energy transport and storage in domestication
Zhiqiang XIA,Xin CHEN,Cheng LU,Meiling ZOU,Shujuan WANG,Yang ZHANG,Kun PAN,Xincheng ZHOU,Haiyan WANG,Wenquan WANG
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The current phosphate recycling situation in China and Germany: a comparative review
Qing XUE, Xinyue HE, Saskia D. SACHS, Gero C. BECKER, Tao ZHANG, Andrea KRUSE
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International Comparative Study on the Setting of Medical Specialty Catalogue and Countermeasures
Yu Zhongguang, Zhang Pengjun, Zhang Zhixin, Wang Chen
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A comparative study of electroacupuncture at Zhongliao (BL33) and other acupoints for overactive bladder
Likun Yang,Yang Wang,Qian Mo,Zhishun Liu
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