Molar crown formation times of fossil orangutan molars from Guangxi, China

2020 ◽  
Author(s):  
Rong Hu ◽  
Lingxia Zhao
Keyword(s):  
Crown Formation

scholarly journals PHOTOSYNTHETIC PRODUCTIVITY OF CHERRY AND SWEET CHERRY LEAVES DUE TO ROOTSTOCK AND ARTIFICIAL FORMS OF TREE CROWNS IN THE GARDEN

2020 ◽  
pp. 146-150
Author(s):  
Khalmirzaev Dilmurod Kamilovich ◽  
Yenileyev Najdat Shavkatovich ◽  
Abdikayumov Zaynilabiddin Abduvokhidovich
Keyword(s):  
Sweet Cherry ◽  
Photosynthetic Activity ◽  
Scientific Article ◽  
Tree Crowns ◽  
Net Productivity ◽  
Photosynthetic Productivity ◽  
A Value ◽  
Sweet Cherries ◽  
Crown Formation ◽  
The Republic

In the scientific article presents the results of research on the study of varietal cherries and artificial ways of formation of the trees to the level of photosynthetic activity of leaves with the orientation of growing trees, their intensive technology. In the research, the varieties of cherries Shubinka, Podbelskaya and Shpanka Chernaya (black) zoned in the Republic, as well as sweet cherries Volovye serdtce, Revershon and Bahor, grown on a low-growing vegetatively propagated rootstock VVA-1 and VSL-2 (Krymsky-5) were used as the object of research. As a result of the conducted research, it was found that the optimal crown system for cherry and sweet cherry varieties is the five-skeletal wall. Crown formation in these forms helps to reduce the volume of the crown to an average of 25%, at which the net productivity of leaf photosynthesis in comparison with the usual crown formation – free-growing and sparse-tiered reaches a value of 34.73 grams/m2 per day. When forming bushy forms of the crown of cherries and sweet cherries, the level of leafiness of leaves improves and the content of chlorophyll in them increases to 13.42 mg/g of raw leaf mass. KEYWORDS: cherry, sweet cherry, density, variety, leaf, area, crown, forming, photosynthesis, productivity, pruning, index, projection.

scholarly journals The Impact of Plant Shaping on Aphid Behavior

2012 ◽  
Vol 52 (2) ◽  
pp. 202-204
Author(s):  
Elżbieta Cichocka ◽  
Magdalena Lubiarz
Keyword(s):  
Aphid Species ◽  
Tree Crown ◽  
Apple Trees ◽  
Tree Crowns ◽  
Urban Greenery ◽  
Large Numbers ◽  
Young Leaves ◽  
Crown Formation ◽  
The Impact ◽  
Aphid Behavior

The Impact of Plant Shaping on Aphid Behavior The paper provides a review of the studies focusing on the impact of plant trimming and pruning (especially in tree rows) and tree crown formation (in orchards and urban greenery) on the bionomy and number of aphids and some other hemipterans. The fresh, succulent shoots which appear after any trimming and pruning provide aphids with "eternal spring" conditions, i.e. the availability of young leaves and shoots preferred by aphids as a source of nutrition. The majority of aphid species acquiring nutrition from leaves feed on the top shoots. People shape garden greenery, forming beautiful, decorative tree crowns. Some shoots in orchards are regularly cut off; sometimes even apple trees are planted in rows. Instead of building traditional fences, hedges are planted and regularly trimmed. Trimmed plants have fresh, succulent shoots, which are an attractive source of nutrition for many aphids. Large numbers of aphids inhabit these rejuvenated plants. Cutting and trimming of plants often have an impact not only on the number of aphids, but also on their bionomy.

Experimental investigation of splash and crown formation during single drop impact on wetted surfaces

2003 ◽  
Vol 35 (6) ◽  
pp. 648-652 ◽  
Author(s):  
R. Rioboo ◽  
C. Bauthier ◽  
J. Conti ◽  
M. Vou� ◽  
J. De Coninck
Keyword(s):  
Experimental Investigation ◽  
Drop Impact ◽  
Single Drop ◽  
Crown Formation

scholarly journals First systematic assessment of dental growth and development in an archaic hominin (genus,Homo) from East Asia

2019 ◽  
Vol 5 (1) ◽  
pp. eaau0930 ◽  
Author(s):  
Song Xing ◽  
Paul Tafforeau ◽  
Mackie O’Hara ◽  
Mario Modesto-Mata ◽  
Laura Martín-Francés ◽  
...  
Keyword(s):  
East Asia ◽  
Growth And Development ◽  
Northern China ◽  
Modern Human ◽  
Dental Development ◽  
Systematic Assessment ◽  
Genus Homo ◽  
Human Morphology ◽  
Crown Formation ◽  
Dental Traits

Several human dental traits typical of modern humans appear to be associated with the prolonged period of development that is a key human attribute. Understanding when, and in which early hominins, these dental traits first appeared is thus of strong interest. Using x-ray multiresolution synchrotron phase-contrast microtomography, we quantify dental growth and development in an archaicHomojuvenile from the Xujiayao site in northern China dating to 161,000–224,000 years or 104,000–125,000 years before present. Despite the archaic morphology of Xujiayao hominins, most aspects of dental development of this juvenile fall within modern human ranges (e.g., prolonged crown formation time and delayed first molar eruption). For its estimated age-at-death (6.5 years), its state of dental development is comparable to that of equivalently aged modern children. These findings suggest that several facets of modern human dental growth and development evolved in East Asia before the appearance of fully modern human morphology.

Crown-formation time in Neandertal anterior teeth revisited

2007 ◽  
Vol 53 (1) ◽  
pp. 108-113 ◽  
Author(s):  
Fernando V. Ramírez Rozzi ◽  
Marina Sardi
Keyword(s):  
Formation Time ◽  
Anterior Teeth ◽  
Crown Formation

Thermocavitation melt instability and micro-crown formation near the threshold for femtosecond laser spallation of a silicon surface

JETP Letters ◽  
2014 ◽  
Vol 100 (3) ◽  
pp. 145-149 ◽  
Author(s):  
V. I. Emel’yanov ◽  
P. A. Danilov ◽  
D. A. Zayarnyi ◽  
A. A. Ionin ◽  
S. I. Kudryashov ◽  
...  
Keyword(s):  
Femtosecond Laser ◽  
Silicon Surface ◽  
Laser Spallation ◽  
Crown Formation
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