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Extensive Pineapple Production Constraints and Land Suitability in the Centre Region of Cameroon

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Agricultural Sciences 2023年第2期14卷 240-255页

作者： Georges Marius Etame Kossi Honoré Beyegue Djonko Alexis Boukong Francis Brice Silatsa Tedou Department of Agriculture Faculty of Agronomy and Agricultural Sciences University of Dschang Dschang Cameroon Department of Soil Science Faculty of Agronomy and Agricultural Sciences University of Dschang Dschang Cameroon sustainable tropical action Yaoundé Cameroon

The low level of productivity observed in pineapple fields in Centre Came-roon must be sustainably reduced in order to increase producers’ income while using the same resources. The identification and control of production constraints are key steps in optimizing the use of limited resources. To this end, the FAO land assessment methodology following the Fuzzy-MCDM pro-tocol was used for the two pineapple production basins in the Centre, namely Awae and Bokito. It was found that the land in Awae Basin is moderately suitable S2sf with constraints imposed by texture, pH and base saturation. In the Bokito Basin, 25% of the land is suitable S1wf and 75% is moderately suitable S2wsf with constraints imposed by soil texture (27%), temporary soil water saturation (99%), pH, base saturation and exchangeable sodium. Constraint correction improves the land index (potential suitability) and re-mains limited by permanent constraints that cannot be corrected. Improve-ment of the technical itinerary through modification of plant densities, selec-tion of improved cultivars and balanced fertilization must be undertaken to optimize pineapple production in Centre Cameroon.

关键词： Land Suitability Constraints Pineapple Centre Cameroon

Laboratory diagnosis for malaria in the elimination phase in China:efforts and challenges

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Frontiers of Medicine 2022年第1期16卷 10-16页

作者： Jianhai Yin Mei Li He Yan Shuisen Zhou Zhigui Xia National Institute of Parasitic Diseases Chinese Center for Disease Control and Prevention(Chinese Center for Tropical Diseases Research)NHC Key Laboratory of Parasite and Vector BiologyWHO Collaborating Center for Tropical DiseasesNational Center for International Research on Tropical DiseasesShanghai 200025China

Malaria remains a global health challenge,although an increasing number of countries will enter pre-elimination and elimination *** prompt and precise diagnosis of symptomatic and asymptomatic carriers of Plasmodium parasites is the key aspect of malaria *** the launch of the China Malaria Elimination action Plan in 2010,China has formulated clear goals for malaria diagnosis and has established a network of malaria diagnostic laboratories within medical and health institutions at all *** external quality assessments were implemented,and a national malaria diagnosis reference laboratory network was established to strengthen the quality assurance in malaria ***,no indigenous malaria cases have been reported since 2017,but the risk of re-establishment of malaria transmission cannot be *** review summarizes the lessons about malaria diagnosis in the elimination phase,primarily including the establishments of laboratory networks and quality control in China,to better improve malaria diagnosis and maintain a malaria-free status.A reference is also provided for countries experiencing malaria elimination.

关键词： malaria laboratory diagnosis quality control malaria elimination China

A SIMULATION STUDY OF THE INFLUENCE OF LAND FRICTION ON LANDFALL tropical CYCLONE TRACK AND INTENSITY

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Journal of tropical Meteorology 2008年第1期14卷 53-56页

作者：袁金南黄燕燕刘春霞万齐林 Guangzhou Institute of tropical and Marine Meteorology CMA

A quasi-geostrophic barotropic vorticity equation model is used to simulate the influences of topographic forcing and land friction on landfall tropical cyclone track and intensity. The simulation results show that tropical cyclone track may have sudden deflection when the action of topographic friction dissipation is considered, and sudden deflection of the track is easy to happen and sudden change of tropical cyclone intensity is not clear when the intensity of tropical cyclone is weak and the land friction is strong. The land friction may be an important factor that causes sudden deflection of tropical cyclone track around landfall.

关键词： land friction landfall tropical cyclone track and intensity numerical simulation.

Projecting the proliferation risk of Oncomelania hupensis in China driven by SSPs:A multi-scenario comparison and integrated modeling study

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Advances in Climate Change Research 2022年第2期13卷 258-265页

作者： Yan-Feng GONG Xiao-Kang HU Yu-Wan HAO Zhuo-Wei LUO Jia-Xin FENG Jing-Bo XUE Zhao-Yu GUO Yin-Long LI Li-Juan ZHANG Shang XIA Shan LYU Jing XU Shi-Zhu LI National Institute of Parasitic Diseases Chinese Center for Disease Control and Prevention(Chinese Center for Tropical Diseases Research)NHC Key Laboratory of Parasite and Vector BiologyWHO Collaborating Centre for Tropical DiseasesNational Center for International Research on Tropical DiseasesShanghai 200025China School of Global Health Chinese Centre for Tropical Diseases ResearchShanghai Jiao Tong University School of MedicineShanghai 200025China

Climate change has been known to cause variations in the geographically suitable areas for the schistosome-transmitting Oncomelania hupensis(***).The spread of snails not only depends on the degree of warming but also on the socioeconomic development of the next few *** socioeconomic pathways(SSPs)published by CMIP6 consider carbon emission pathways as well as influences of distinct types of social development and land use on the regional climate,providing the possibility to accurately evaluate the impact of socioeconomic development and climate variation on the spread of *** study employed SSP126,SSP245,SSP370,and SSP585 and the correlative approach to explore the impacts of climate change and socioeconomic development on the potential diffusion areas for *** in *** results exhibited strong evidence that *** will spread in the north of the middle and lower reaches of the Yangtze River and disappear from a small part of its current southern habitat,whereas in Sichuan and Yunnan,*** may spread slightly to the *** projection also demonstrated that fossil fuel-driven development(SSP585)will be more conducive to the spread of *** breeding sites in the 2030s,whereas the continuous increase in snail breeding habitats under the regional rivalry path(SSP370)may lead to great challenges in snail control in the long term(2020-2080).

关键词： Oncomelania hupensis Shared socioeconomic pathways(SSPs) Climate change China

Development of chromatographic fingerprint for quality analysis of diploid and tetraploid Lonicera japonica

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Journal of Traditional Chinese Medicine 2020年第1期40卷 73-82页

作者： Hu Xuan Wang Dan Pang Yuxin Wu Zhisheng Huan Hengfu Chen Zhijian Li Weidong Institute of tropical Crop Genetic Resources Chinese Academy of Tropical Agriculture SciencesDanzhou 571737China School of Chinese Materia Medica Beijing University of Chinese MedicineBeijing 100102China

OBJECTIVE:To develop the chromatographic fingerprint of Lonicera japonica(***)and evaluate the effects of polyploidy on the quality of ***:High-performance liquid chromatography(HPLC)methods used to establish the chromatographic fingerprint were *** quality of 11 batches of diploid *** and 13 batches of tetraploid *** collected from different regions across China were *** contents of five active compounds,consisting of chlorogenic acid,rutin,galuteolin,isochlorogenic acid A and quercetin,were further detected in ***:The chromatographic fingerprint established by the optimized HPLC method was verified for qualitative analysis of *** analysis showed that the contents of chlorogenic acid,isochlorogenic acid A,and quercetin in tetraploid plants were higher than those in diploid plants,whereas rutin and galuteolin contents in tetraploid plants were lower than those in diploid ***:The developed HPLC method is suitable for qualitative analysis of *** was indicated to influence the chemical properties of *** *** shows potential for utilization as a medicinal plant with different active components.

关键词： Lonicera Polyploidy Chromatography,high pressure liquid Dermatoglyphics Phytochemicals Qualitative research

Transmission Risks of Mountain-Type Zoonotic Visceral Leishmaniasis—Six Endemic Provincial-Level Administrative Divisions,China,2015–2020

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China CDC weekly 2022年第8期4卷 148-152页

作者： Xinyi Wang Shang Xia Jingbo Xue Zhengbin Zhou Yuanyuan Li Zelin Zhu Yi Zhang Qiang Wang Shizhu Li National Institute of Parasitic Diseases Chinese Center for Disease Control and Prevention(Chinese Center for Tropical Diseases Research)NHC Key Laboratory of Parasite and Vector BiologyWHO Collaborating Centre for Tropical DiseasesNational Center for International Research on Tropical DiseasesShanghaiChina School of Global Health Chinese Center for Tropical Diseases ResearchShanghai Jiao Tong University School of MedicineShanghaiChina

Summary What is already known about this topic?Mountain-type zoonotic visceral leishmaniasis(MTZVL)cases in China have increased significantly between 2015 and 2020.A total of 25 regions had reemerged yielding 88 MT-ZVL indigenous cases,while the total number of visceral leishmaniasis cases *** is added by this report?The transmission risk of MT-ZVL showed a trend of patchy dissemination centered on major endemic areas and medium-high risk occurrence areas of Phlebotomus chinensis with discrete ***-point re-emergence and local outbreaks of MT-ZVL were trending in historically endemic *** are the implications for public health practice?Risk identification and early warnings of MT-ZVL are essential in formulating precise prevention and control strategies in *** frequent monitoring,establishing a mechanism of joint prevention and control,and highlighting health education are recommended.

关键词： prevention establishing precise

Identification of the high-risk area for schistosomiasis transmission in China based on information value and machine learning:a newly data-driven modeling attempt

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Infectious Diseases of Poverty 2021年第3期10卷 113-114页

作者： Yan-Feng Gong Ling-Qian Zhu Yin-Long Li Li-Juan Zhang Jing-Bo Xue Shang Xia Shan Lv Jing Xu Shi-Zhu Li National Institute of Parasitic Diseases Chinese Center for Disease Control and PreventionChinese Center for Tropical Diseases ResearchHC Key Laboratory of Parasite and Vector BiologyWHO Collaborating Centre for Tropical DiseasesNational Center for International Research on Tropical DiseasesShanghai 200025China

Background:Schistosomiasis control is striving forward to transmission interruption and even elimination,evidence-lead control is of vital importance to eliminate the hidden dan gers of *** study attempts to ide ntify... 详细信息

关键词： Schistosomiasis Risk prediction Information value Machine learning China

Elimination of Schistosomiasis Japonica in China:From the One Health Perspective

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China CDC weekly 2022年第7期4卷 130-134页

作者： Zhong Hong Lu Li Lijuan Zhang Qiang Wang Jing Xu Shizhu Li Xiao-nong Zhou National Institute of Parasitic Diseases Chinese Center for Disease Control and Prevention(Chinese Center for Tropical Diseases Research)NHC Key Laboratory of Parasite and Vector BiologyWHO Collaborating Centre for Tropical DiseasesNational Center for International Research on Tropical DiseasesShanghaiChina School of Global Health Chinese Center for Tropical Diseases ResearchShanghai Jiao Tong University School of MedicineShanghaiChina

Schistosomiasis japonica is caused by infection of Schistosoma japonicum(***),which infected 12 million residents in the 1950s in China and was a heavy burden to public health and socioeconomic development(1).After more than seven decades of effort to control schistosomiasis,the prevalence of schistosomiasis has been reduced dramatically in *** the 450 endemic counties(including city and district-level jurisdictions),74.89%(337/450),21.87%(98/450),and 3.33%(15/450)have achieved the criteria of elimination,transmission interruption,and transmission control of schistosomiasis,*** the overall endemic status of schistosomiasis remains at a low level,the strategies shifted from snail control to morbidity control and then to an integrated strategy that emphasized infection source ***,being a vector-borne and zoonotic disease,schistosomiasis japonica is intricately linked to multiple factors including biological,natural,and socioeconomic risk *** order to eliminate schistosomiasis earlier and more thoroughly,the One Health approach should be adopted,which focuses on solving complex health problems from a macro-level perspective of interactions among human,animal,and environment,emphasizing multi-institution,interdisciplinary,and cross-regional collaboration and communication.

关键词： Schistosomiasis eliminate thoroughly

Quantitative Microbial Risk Assessment of Cryptosporidium and Giardia in Public Drinking Water in China

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Biomedical and Environmental Sciences 2021年第6期34卷 493-498页

作者： CAO Sheng Kui JIANG Yan Yan YUAN Zhong Ying YIN Jian Hai XU Meng XUE Jing Bo TANG Lin Hua SHEN Yu Juan CAO Jian Ping National Institute of Parasitic Diseases Chinese Center for Disease Control and Prevention(Chinese Center for Tropical Diseases Research)Shanghai 200025China NHC Key Laboratory of Parasite and Vector Biology Shanghai 200025China WHO Collaborating Centre for tropical Diseases Shanghai 200025China National Center for International Research on tropical Diseases Shanghai 200025China School of Global Health Chinese Center for Tropical Diseases ResearchShanghai Jiao Tong University School of MedicineShanghai 200025China

We aimed to assess the risks of Cryptosporidium and Giardia infections associated with drinking water for local residents,based on a quantitative microbial risk assessment,in three densely populated regions of *** tot... 详细信息

关键词： China. drinking densely