Microbially mediated dolomite in Cambrian stromatolites from the Tarim Basin, north-west China: implications for the role of organic substrate on dolomite precipitation

Terra Nova ◽  
2013 ◽  
Vol 25 (5) ◽  
pp. 387-395 ◽  
Author(s):  
Xuelian You ◽  
Shu Sun ◽  
Jingquan Zhu ◽  
Qing Li ◽  
Wenxuan Hu ◽  
...  
Keyword(s):  
Tarim Basin ◽  
Organic Substrate ◽  
West China ◽  
North West ◽  
Dolomite Precipitation

Structural framework and its formation of the Kalpin thrust belt, Tarim Basin, north-west China, from Landsat TM data

2003 ◽  
Vol 24 (18) ◽  
pp. 3535-3546 ◽  
Author(s):  
Peijun Li ◽  
Zhengwu Zhou ◽  
Jianghai Li ◽  
Chen Zhang ◽  
Wenyuan He ◽  
...  
Keyword(s):  
Tarim Basin ◽  
Landsat Tm ◽  
Thrust Belt ◽  
West China ◽  
North West ◽  
Structural Framework

Role of mucilage in seed dispersal and germination of the annual ephemeral Alyssum minus (Brassicaceae)

2012 ◽  
Vol 60 (5) ◽  
pp. 439 ◽  
Author(s):  
Ying Sun ◽  
Dun Y. Tan ◽  
Carol C. Baskin ◽  
Jerry M. Baskin
Keyword(s):  
Water Stress ◽  
Seed Dispersal ◽  
Incubation Temperature ◽  
Water Reservoir ◽  
Soil Surface ◽  
Moisture Stress ◽  
West China ◽  
North West ◽  
Seed Age

Seeds of Alyssum minus, an annual ephemeral in shrublands of north-west China, can produce a large amount of mucilage. The primary aim of this study was to explore the role of mucilage in seed dispersal, settlement onto the soil surface and germination of this species. Width of imbibed seeds with mucilage was three times greater than that of seeds without mucilage, and mass of mucilage increased 167 times after imbibition. Expanded dry mucilage significantly increased wind dispersal of seeds. Floating time on water was greatest for seeds without mucilage, and adherence of soil particles to seeds was greater for seeds with mucilage than for those without mucilage. Mucilage increased rate of water uptake and decreased rate of water loss, and it significantly decreased germination of 0- and 4-week-old seeds. Gibberellic acid promoted germination of 0- and 4-week-old seeds with and without mucilage, but its effect depended on seed age and incubation temperature. Seeds with mucilage subjected to water stress during imbibition and/or incubation germinated faster than those without mucilage. Presence of mucilage on seeds during imbibition significantly increased germination percentages under increased water stress, a first report of this phenomenon. The study has shown that the mucilage of A. minus plays an important role in seed dispersal, seed adhesion to soil (thereby minimising removal by water and predators), seed hydration via increasing surface contact with the substrate, and can serve as a water reservoir for germination, especially under moisture stress.

Multiphase dolomitization of deeply buried Cambrian petroleum reservoirs, Tarim Basin, north-west China

Sedimentology ◽  
2016 ◽  
Vol 63 (7) ◽  
pp. 2130-2157 ◽  
Author(s):  
Lei Jiang ◽  
Chunfang Cai ◽  
Richard H. Worden ◽  
Stephen F. Crowley ◽  
Lianqi Jia ◽  
...  
Keyword(s):  
Tarim Basin ◽  
Petroleum Reservoirs ◽  
West China ◽  
North West

Tectonically driven dolomitization of Cambrian to Lower Ordovician carbonates of the Quruqtagh area, north-eastern flank of Tarim Basin, north-west China

Sedimentology ◽  
2016 ◽  
Vol 64 (4) ◽  
pp. 1079-1106 ◽  
Author(s):  
Shaofeng Dong ◽  
Daizhao Chen ◽  
Xiqiang Zhou ◽  
Yixiong Qian ◽  
Mi Tian ◽  
...  
Keyword(s):  
Tarim Basin ◽  
West China ◽  
North West ◽  
Eastern Flank ◽  
Lower Ordovician ◽  
North Eastern ◽  
Area North

TBE in China

2020 ◽  
Keyword(s):  
Western China ◽  
Ixodes Persulcatus ◽  
West China ◽  
North West ◽  
Haemaphysalis Concinna ◽  
Viral Subtype ◽  
Japanese Military ◽  
Natural Foci ◽  
Far Eastern ◽  
The Brain

The first TBE patients in China were reported in 1943, and the TBEV was isolated from the brain tissues of 2 patients in 1944 by Japanese military scientists,1 and from patients and ticks (Ixodes persulcatus and Haemaphysalis concinna) in 1952 by Chinese researchers.2 The Far Eastern viral subtype (TBEV-FE) is the endemic subtype that has been isolated from all 3 known natural foci (northeastern China, western China, and southwestern China).14 Recently a new “Himalayan subtype” of the TBEV (TBEV-HIM) was isolated from wild rodent Marmoata himalayana in the Qinghai-Tibet Plateau15. The main vector of the TBEV in China is I. persulcatus.3 One recent report suggests that the TBEV-SIB is prevalent in the Uygur region (North West China)13 but epidemiological modelling indicates that the TBEV may occur even widely all over China (Figure 3).4 Likely, the disease is often missed by clinicians due to a lack of the availability of specific diagnostic assays16.

scholarly journals An increasing role of pyrethroid-resistant Anopheles funestus in malaria transmission in the Lake Zone, Tanzania

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Nancy S. Matowo ◽  
Jackline Martin ◽  
Manisha A. Kulkarni ◽  
Jacklin F. Mosha ◽  
Eliud Lukole ◽  
...  
Keyword(s):  
Malaria Transmission ◽  
Anopheles Funestus ◽  
Sub Saharan Africa ◽  
North West ◽  
Vector Population ◽  
Lake Zone ◽  
Sub Saharan ◽  
Long Lasting Insecticidal Nets ◽  
Study District

AbstractAnopheles funestus is playing an increasing role in malaria transmission in parts of sub-Saharan Africa, where An. gambiae s.s. has been effectively controlled by long-lasting insecticidal nets. We investigated vector population bionomics, insecticide resistance and malaria transmission dynamics in 86 study clusters in North-West Tanzania. An. funestus s.l. represented 94.5% (4740/5016) of all vectors and was responsible for the majority of malaria transmission (96.5%), with a sporozoite rate of 3.4% and average monthly entomological inoculation rate (EIR) of 4.57 per house. Micro-geographical heterogeneity in species composition, abundance and transmission was observed across the study district in relation to key ecological differences between northern and southern clusters, with significantly higher densities, proportions and EIR of An. funestus s.l. collected from the South. An. gambiae s.l. (5.5%) density, principally An. arabiensis (81.1%) and An. gambiae s.s. (18.9%), was much lower and closely correlated with seasonal rainfall. Both An. funestus s.l. and An. gambiae s.l. were similarly resistant to alpha-cypermethrin and permethrin. Overexpression of CYP9K1, CYP6P3, CYP6P4 and CYP6M2 and high L1014S-kdr mutation frequency were detected in An. gambiae s.s. populations. Study findings highlight the urgent need for novel vector control tools to tackle persistent malaria transmission in the Lake Region of Tanzania.

scholarly journals The role of accommodation environments in student mental health and wellbeing

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Joanne D. Worsley ◽  
Paula Harrison ◽  
Rhiannon Corcoran
Keyword(s):  
Mental Health ◽  
First Year ◽  
Student Mental Health ◽  
North West ◽  
Human Element ◽  
Health And Wellbeing ◽  
Physical Attributes ◽  
Attachment To Place ◽  
Pastoral Staff

Abstract Background Due to the increasing concern over student mental health and wellbeing, attention has turned to the matter of creating environments, communities, and institutions which enable students to flourish. Methods To explore the role of accommodation environments in first year student mental health and wellbeing, eight focus groups were conducted in two universities in North West England and analysed using thematic analysis. Results Three overarching themes were identified: ‘The betwixt space’; ‘Accommodations as vessels to cultivate friendships and communities’; and ‘The importance of accommodation-based pastoral staff’. As attachment to place and relationships with significant others are disrupted by the transition, this leaves young people vulnerable whilst they go through a process to re-attach to new people and a new environment, and loneliness and social isolation were keenly felt during this period. Physical attributes of place that prevent social cohesion further exacerbated feelings of loneliness. Conclusions As it is common for students to withdraw physically and psychologically when they do not form friendships within their flat, accommodation-based pastoral staff have an important role to fulfil. Although these findings demonstrate the importance of the human element within accommodation, designing places that facilitate community, a sense of we-ness, and belonging is crucial.

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