Nocturnal sap flow is mainly caused by stem refilling rather than nocturnal transpiration for Acer truncatum in urban environment

2020 ◽  
Vol 56 ◽  
pp. 126800
Author(s):  
Ju Wu ◽  
Haixuan Liu ◽  
Jiyou Zhu ◽  
Lan Gong ◽  
Lijuan Xu ◽  
...  
Keyword(s):  
Urban Environment ◽  
Sap Flow ◽  
Nocturnal Transpiration

scholarly journals Prediction model for sap flow in cacao trees under different radiation intensities in the western Colombian Amazon

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Juan Carlos Suárez ◽  
Fernando Casanoves ◽  
Marie Ange Ngo Bieng ◽  
Luz Marina Melgarejo ◽  
Julio A. Di Rienzo ◽  
...  
Keyword(s):  
Sap Flow ◽  
Linear Models ◽  
Cost Effective ◽  
Incident Radiation ◽  
Agroforestry Systems ◽  
The Other ◽  
Hydraulic Redistribution ◽  
Mixed Linear Models ◽  
Diurnal Patterns ◽  
Nocturnal Transpiration

AbstractIn this study, we measured diurnal patterns of sap flow (Vs) in cacao trees growing in three types of agroforestry systems (AFs) that differ in the incident solar radiation they receive. We modeled the relationship of Vs with several microclimatic characteristics of the AFs using mixed linear models. We characterized microclimatic variables that may have an effect on diurnal patterns of sap flow: air relative humidity, air temperature, photosynthetically active radiation and vapor pressure deficit. Overall, our model predicted the differences between cacao Vs in the three different AFs, with cacao plants with dense Musaceae plantation and high mean diurnal incident radiation (HPAR) displaying the highest differences compared to the other agroforestry arrangements. The model was also able to predict situations such as nocturnal transpiration in HPAR and inverse nocturnal sap flows indicative of hydraulic redistribution in the other AFs receiving less incident radiation. Overall, the model we present here can be a useful and cost-effective tool for predicting transpiration and water use in cacao trees, as well as for managing cacao agroforestry systems in the Amazon rainforest.

Concerning the Concept of Light-Colour Arrangement of the Urban Environment in the Central Part of Tyumen

2020 ◽  
pp. 34-42
Author(s):  
Nikolay I. Shchepetkov ◽  
Svetlana B. Kapeleva ◽  
Denis V. Bugaev ◽  
Gregory S. Matovnikov ◽  
Anna S. Kostareva
Keyword(s):  
Urban Environment ◽  
Comprehensive Analysis ◽  
Assessment Criteria ◽  
Field Observations ◽  
General Plan ◽  
Design Solutions ◽  
Methodological Principles ◽  
The City

The article provides a comprehensive analysis of outdoor lighting in the central part of Tyumen (with consideration of conducted field observations) and prospects of its development on the basis of the general plan of illumination of the central part of the city being under design. Main provisions of this general plan as well as methodological principles and assessment criteria of design solutions illustrat-ed by photographs, schemes and visualisations of the illuminated objects are described.

Osteosynthesis at pelvic injuries in toy-breed dogs

2020 ◽  
pp. 32-33
Author(s):  
Nikolay I. Antonov ◽  
Keyword(s):  
Surgical Treatment ◽  
Urban Environment ◽  
Pelvic Trauma ◽  
X Rays ◽  
Skeletal Trauma ◽  
Companion Dogs ◽  
Pelvic Injuries ◽  
Behavioral Features ◽  
Osteosynthesis Techniques ◽  
One Year

Pelvic injuries account for 16 to 25% of all skeletal trauma in small pets. Small dogs as companion dogs are now widespread. Unusual exterior and behavioral features have made them popular and at the same time vulnerable in the modern urban environment. The author defined the nature of injuries and adapted technique of transosseous osteosynthesis for the treatment of toy-breed dogs with pelvic trauma. The study of the X-rays in 226 dogs with pelvic injuries demonstrated that toy-breed dogs accounted for 16% of the total. Multiple pelvic trauma was revealed in 95% of them. Surgical treatment was performed in 24 dogs, conservative one - in 13, that amounted to 65% and 35%, respectively. Surgical treatment consisted in open juxtaposing of fragments and focal transosseous and/or internal osteosynthesis with subsequent external fixation using devices of various designs. The external structures were of three types: half-ring support or U-shaped staple, pair of parallel curved plates connected by two threaded rods with each other, and pair of curved plates located bilaterally on both sides of the pelvis and connected by two threaded rods with the help of threaded ends. The terms of fixation for pelvic injuries in toy-breed dogs at the age under one year were 42 days on the average, and in the dogs at the age above one year - 60 days. Surgical treatment in toy-breed dogs with pelvic injuries was performed more often in comparison with conservative one. Pelvic trauma was accompanied by pronounced pain shock. The osteosynthesis techniques used in toy-breed dogs are little traumatic and not limiting functions thereby contributing to recovery of all the structures of pelvis and pelvic limbs.

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