A simple strategy to monitor the temporal and spatial distribution of alkaloids in sacred lotus leaves

2021 ◽  
Author(s):  
Jing Liu ◽  
Kaifeng Shi ◽  
Jia Shi ◽  
Yunluan Feng ◽  
Chenyang Hao ◽  
...  
Keyword(s):  
Biological Tissues ◽  
Alkaloid Content ◽  
Spatial Distributions ◽  
Temporal And Spatial Distribution ◽  
Lotus Leaf ◽  
Simple Strategy ◽  
Spatial And Temporal Distributions ◽  
Sacred Lotus ◽  
Lotus Leaves ◽  
Temporal And Spatial

ABSTRACT Owing to the high degree of diversity of metabolite pools and complexity of spatial and temporal distributions within biological tissues, currently available methods for metabolite characterization face large challenges. In this study, the temporal and spatial distributions of the alkaloid components of the medicinal plant lotus (Nelumbo nucifera) were investigated over various growth phases. The results showed that alkaloid biosynthesis in lotus leaf is regulated by development and that there is maximum accumulation of alkaloids when the lotus leaf was completely expanded. Furthermore, alkaloid content tended to be stable in mature lotus leaves. However, there was significant variation in the alkaloid content of lotus leaves with different genotypes, suggesting that genetic background is an important factor that affects the temporal and spatial distributions of alkaloids in sacred lotus leaves. The dynamic contents of alkaloids during the growth and development of lotus leaves provide insight into basic biological differences when sampling.

Geophysical Variables and Behavior: L. Indications of a Tectonic Strain Factor in the Rutledge (Ufo) Observations during 1973 in Southeastern Missouri

1988 ◽  
Vol 67 (2) ◽  
pp. 571-575 ◽  
Author(s):  
Michael A. Persinger
Keyword(s):  
Spatial Distributions ◽  
Physical Mechanisms ◽  
Spatial And Temporal Distributions ◽  
Regional Tectonic ◽  
Temporal And Spatial ◽  
And Behavior ◽  
Systematic Collection

Temporal and spatial distributions of classic UFO phenomena recorded by Rutledge during the year 1973 in southeastern Missouri were examined. Despite exotic characteristics, the phenomena occurred during the periods of the only two earthquake episodes within the region; the most vigorous phenomena occurred on the day of or the day before the earthquakes. The spatial and temporal distributions of these phenomena were commensurate with the tectonic strain hypothesis that most verified UFO reports are generated by tectonic strain through as yet unspecified physical mechanisms. The results also indicated that any systematic collection of UFO reports should demonstrate the relation between regional tectonic strain and these phenomena.

scholarly journals Dog colour patterns explained by modular promoters of ancient canid origin

2021 ◽  
Author(s):  
Danika L. Bannasch ◽  
Christopher B. Kaelin ◽  
Anna Letko ◽  
Robert Loechel ◽  
Petra Hug ◽  
...  
Keyword(s):  
Colour Pattern ◽  
Hair Cycle ◽  
Temporal And Spatial Distribution ◽  
Multiple Alleles ◽  
Haplotype Combination ◽  
Regulatory Modules ◽  
Regulatory Module ◽  
Temporal And Spatial ◽  
Selection For ◽  
Colour Patterns

AbstractDistinctive colour patterns in dogs are an integral component of canine diversity. Colour pattern differences are thought to have arisen from mutation and artificial selection during and after domestication from wolves but important gaps remain in understanding how these patterns evolved and are genetically controlled. In other mammals, variation at the ASIP gene controls both the temporal and spatial distribution of yellow and black pigments. Here, we identify independent regulatory modules for ventral and hair cycle ASIP expression, and we characterize their action and evolutionary origin. Structural variants define multiple alleles for each regulatory module and are combined in different ways to explain five distinctive dog colour patterns. Phylogenetic analysis reveals that the haplotype combination for one of these patterns is shared with Arctic white wolves and that its hair cycle-specific module probably originated from an extinct canid that diverged from grey wolves more than 2 million years ago. Natural selection for a lighter coat during the Pleistocene provided the genetic framework for widespread colour variation in dogs and wolves.

scholarly journals Analysis of the Temporal and Spatial Characteristics of Material Cultural Heritage Driven by Big Data—Take Museum Relics as an Example

Information ◽  
2021 ◽  
Vol 12 (4) ◽  
pp. 153
Author(s):  
Penglong Li ◽  
Zuoqin Shi ◽  
Yi Ding ◽  
Ling Zhao ◽  
Zezhong Ma ◽  
...  
Keyword(s):  
Cultural Heritage ◽  
Life Cycles ◽  
Cultural Communication ◽  
Temporal And Spatial Distribution ◽  
State Administration ◽  
Cultural Relic ◽  
Temporal And Spatial ◽  
Temporal And Spatial Characteristics ◽  
And Migration ◽  
Cultural Relics

Museum cultural relics represent a special material cultural heritage, and modern interpretations of them are needed in current society. Based on the catalogue data of cultural relics published by the State Administration of Cultural Heritage, this paper analyzes the continuity and intermittentness of cultural relics in time series by using the method of continuity judgment of cultural relics, analyzes the aggregation and migration of cultural relics in space by using the method of spatial analysis, and then uses cosine similarity to explain the similarity distribution in space and time. The results show that the overall distribution of cultural relics exhibits the characteristics of class aggregation, dynasty aggregation and regional aggregation. From the perspective of a time scale, cultural relics have different “life cycles”, displaying continuity, intermittentness, and similarity. From the perspective of a spatial scale, the cultural relic distribution forms a small “cultural communication circle”, showing aggregation, migration, and similarity. The temporal and spatial distribution of cultural relics exhibited more similar characteristics among dynasties that were closer together than those that were far away.

scholarly journals Temporal and spatial distributions of animal and human rabies cases during 2012 and 2018, in Tunisia

2021 ◽  
Author(s):  
Sana Kalthoum ◽  
Kaouther Guesmi ◽  
Raja Gharbi ◽  
Mohamed Naceur Baccar ◽  
Chedia Seghaier ◽  
...  
Keyword(s):  
Human Rabies ◽  
Spatial Distributions ◽  
Temporal And Spatial
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