Magnetic characteristics of atmospheric dustfall in a subtropical monsoon climate zone of China and its environmental implications: A case study of Nanjing

2019 ◽  
Vol 212 ◽  
pp. 231-238 ◽  
Author(s):  
Longsheng Wang ◽  
Shouyun Hu ◽  
Mingming Ma ◽  
Yingjun Zhang ◽  
Xiaohui Wang ◽  
...  
2014 ◽  
Vol 584-586 ◽  
pp. 119-123
Author(s):  
Da Yao Li ◽  
Jiang He ◽  
Yan Qing Li

Longji Zhuang village is a typical stem bar building villages, its mountainous subtropical monsoon climate as the main geographical terrain and climatic conditions, as well as unique ethnic customs of the local people's production and life have a profound affected. The paper through analysis of characteristics of Longji Zhuang village’s stem bar building , it’s architectural features and it’s building structures and building materials; to make a further understanding of the living conditions of the ancient Zhuang Village residential architectural forms and residents. Hoping to provide reference for the development of traditional residential of Zhuang people in Longji Village. Keywords: Guangxi, traditional residential of Zhuang people, the stem bar building,traditional architectural culture, Longsheng


2015 ◽  
Vol 12 (1) ◽  
pp. 134-144 ◽  
Author(s):  
Jia-liang Tang ◽  
Xun-qiang Cheng ◽  
Bo Zhu ◽  
Mei-rong Gao ◽  
Tao Wang ◽  
...  

2014 ◽  
Vol 185 (1) ◽  
pp. 13-31 ◽  
Author(s):  
Claudine Malfilatre ◽  
Erwan Hallot ◽  
Philippe Boulvais ◽  
Marc Poujol ◽  
Annick Chauvin ◽  
...  

Abstract Two examples of granitic stones from Brittany (western France) commercialized under the names of “gris-bleu de Louvigné” and “bleu de Lanhélin” were characterized in order to explore how the provenance of a building stone can be traced back with a maximum of confidence. For this purpose, petrographical, geochemical and magnetic characteristics, representing more than 70 quantitative and qualitative variables, were compiled for a total of 32 samples. We have defined two reference populations for these building stones and have extracted their discriminative characteristics. We have then compared four randomly selected samples and two foreign commercial counterparts of these stones to the reference populations. Discriminative variables differ from one case of comparison to the other, which indicates that a combination of various tools and variables will be generally required to unequivocally fingerprint the origin of a given granitic stone. Where several quarries are mining a single geological unit within a composite intrusion, the provenance of a granitic rock can be defined at the scale of the intrusion. In addition, stones coming from two different intrusions from the same batholith can be distinguished. We conclude that the provenance of any granitic building stone is identifiable, especially if the intrinsic variability of a population of samples representative of that stone has been previously circumscribed. This study underlines that the compilation of databases for building stone identity cards is an essential first step toward the creation of official labels guaranteeing stone provenances.


2012 ◽  
Vol 518-523 ◽  
pp. 5754-5759
Author(s):  
Dong Jian Xue ◽  
Zheng Wei He ◽  
Xiang Dong Zheng

Derong County is located in Ganzi Tibetan Autonomous Prefecture in southern part of Sichuan Province, in the upper of the Jinsha River, where there is a subtropical plateau monsoon climate, abundant sunshine, and large amount of evaporation, so it is a typical dry-hot valleys region. Derong County is the area of more ups and downs in the terrain, deep valleys, steep mountains, complex geological conditions, intense tectonic activity, various climate types, and has obvious vertical zone effect by temperature, serious physical weathering of rock, and landslide, debris flow, collapse and other geohazards are easily induced under the influence of rainfall and human engineering activities. These geohazards have brought serious harm to the people's lives and property, and have a great impact on the socio-economic development. Through the analysis of geohazards in the study area to investigate its distribution and development trends, this paper provide a basis for geohazard prevention and economic development.


2020 ◽  
Vol 13 (2) ◽  
pp. 225-234
Author(s):  
X. Huang ◽  
Z. Xiao ◽  
F. Kong ◽  
A.J. Chen ◽  
G. Perrone ◽  
...  

Aspergillus spp. are a common contaminant of grapes and a major source of mycotoxins. China is the largest producer of grape in the world now, however, the toxigenic Aspergillus population on grape in this country is still largely unknown. In this study, a total of 345 strains were isolated from grapes of 13 main grapevine producing regions in China. Based on calmodulin gene sequences, eight species within Aspergillus section Nigri were identified. Among them, Aspergillus tubingensis (48.7%) was predominant, followed by Aspergillus welwitschiae (20.6%) and Aspergillus aculeatinus (11%). Average of contamination level was up to 64.19%, and we found the occurrence of section Nigri species on the surface of fresh grapes was significantly influenced by the climate (P<0.05). The subtropical monsoon climate showed the highest fungal detection rate (72.45%), followed by the temperate monsoon climate (49.82%), and the lowest frequency was found in the temperate continental climate (37.23%). Regarding mycotoxin-producing capacity, 4.4% of the total tested section Nigri isolates (137) were positive for ochratoxin A (OTA) production and 59.6% were fumonisin B2 (FB2) producers. Of those, Aspergillus carbonarius was the main OTA producer and A. welwitschiae and Aspergillus niger were the main FB2 producers with different toxigenic ability. Our results highlight the potential risk of OTA and FB2 contamination by A. carbonarius and A. welwitschiae on grape in China, respectively; management strategies should be considered for preventing and reducing the toxigenic Aspergillus and its mycotoxins.


Urban Climate ◽  
2018 ◽  
Vol 24 ◽  
pp. 369-392 ◽  
Author(s):  
Rajashree Kotharkar ◽  
Anurag Bagade

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