Results 141 to 150 of about 22,534,897 (356)

On the capabilities and limitations of high altitude pseudo-satellites

, 2018
The idea of self-sustaining air vehicles that excited engineers in the seventies has nowadays become a reality as proved by several initiatives worldwide.
J. Gonzalo, Deibi López, Diego Domínguez, Adrián García, A. Escapa   +4 more
semanticscholar   +1 more source

Prospecting of Architectural Features Using LiDAR‐UAV Technology, Deep Neural Networks and Visualization Techniques: A Case Study in Kuélap and Cambolín (NW Peru)

Archaeological Prospection, EarlyView.
ABSTRACT High‐resolution and accurate synoptic images of terrestrial topography, even in densely forested areas, have proven valuable for archaeology by enabling the identification and characterization of relief patterns associated with ancient human activities. This study presents a novel approach that integrates digital terrain models (DTMs) obtained
Jhon A. Zabaleta‐Santisteban, Rolando Salas López, Angel J. Medina‐Medina, Katerin M. Tuesta‐Trauco, Abner S. Rivera‐Fernandez, Nerci M. Noriega‐Salazar, José A. Sánchez‐Vega, Teodoro B. Silva‐Melendez, Marlen A. Grandez‐Alberca, Jhonsy O. Silva‐López, Nilton B. Rojas‐Briceño, Manuel Oliva‐Cruz, Alexander Cotrina‐Sanchez, Elgar Barboza   +13 more
wiley   +1 more source

Hypoxia promotes progression of cervical cancer by modulating the ATXN3-enhanced P53 stability or STAT5 phosphorylation

Cell Death Discovery
This study examines hypoxia’s role in regulating ATXN3 (ATXN3) across cervical cancer subtypes and its impact on tumor progression. We analyzed ATXN3 expression in clinical samples and cell lines (C33A, HeLa, SiHa), assessing proliferation/migration ...
Rong Zhang, Shengjun Chai, Fengjuan Zhang, Jiaming Lai, Rui Wang, Guocai Xu, Xiaoxia Fan, Botong Li, Chunmei Cai   +8 more
doaj   +1 more source

Identification of topographic features influencing aerosol observations at high altitude stations

Atmospheric Chemistry and Physics, 2018
. High altitude stations are often emphasized as free tropospheric measuring sites but they remain influenced by atmospheric boundary layer (ABL) air masses due to convective transport processes. The local and meso-scale topographical features around the
M. Collaud Coen, E. Andrews, D. Aliaga, M. Andrade, H. Angelov, N. Bukowiecki, M. Ealo, P. Fialho, H. Flentje, A. Hallar, R. Hooda, I. Kalapov, R. Krejci, N. Lin, A. Marinoni, J. Ming, N. Nguyen, M. Pandolfi, V. Pont, L. Ries, S. Rodríguez, Gerhard Schauer, K. Sellegri, Sangeeta Sharma, Junying Sun, P. Tunved, P. Velasquez, D. Ruffieux   +27 more
semanticscholar   +1 more source

Multi‐Method Geophysical Surveys Between and Around the Kerlescan and the Manio Megalithic Alignments in Carnac (Morbihan, France)

Archaeological Prospection, EarlyView.
ABSTRACT The Carnac alignments in Morbihan (France) are among the most famous Neolithic sites of the world. Paradoxically, they have benefited little from a thorough renewal of archaeological data over the past century. There are many reasons for this, but it is mainly because the site has been regarded more as a monument to visit and protect than as ...
Guillaume Bruniaux, Vivien Mathé, Olivier Agogué, Sylvia Lopez, Philippe Paillou, Reena Perschke, Vincent Ard   +6 more
wiley   +1 more source

The Layout and Size of an Early Pre‐Pottery Neolithic B Small Settlement Revealed by Geophysical Prospection at Harbetsuvan Tepesi in Southeastern Anatolia

Archaeological Prospection, EarlyView.
ABSTRACT In Upper Mesopotamia, the transition from the Pre‐Pottery Neolithic A (PPNA) to Pre‐Pottery Neolithic B (PPNB) period, ca. 10 800–10 600 cal. BP, is marked by a series of changes in chipped stone industries, architectural forms, symbolic objects, regional distribution of settlements and long‐distance exchange networks among others.
Toshihiro Tada, Ryota Moriwaki, Kazuya Shimogama, Kenta Suzuki, Wataru Satake, Nurcan Küçükarslan, Celal Uludağ, Yoshihiro Nishiaki   +7 more
wiley   +1 more source

Prevalence of gallstone disease and its association with altitude and ethnicity among employee health check-upers in the Qinghai-Tibet Plateau

BMC Gastroenterology
Objective This study aimed to investigate the prevalence of gallstone disease among health check-upers (employees) in the Qinghai-Tibet Plateau and clarify the independent effects of altitude, ethnicity, and their interaction on gallstone disease risk ...
Shenggui Qi, Li Li, Yuhua Yan, Gengdeng, Xiaofeng Ma, Airong Yang, Hongguang Fan   +6 more
doaj   +1 more source

Effects of different hypoxia exposure on myeloid-derived suppressor cells in mice

Experimental and Molecular Pathology
For many people living at high altitudes for long or short periods of time, hypoxia is a challenge affecting many aspects of the body, including the immune system.
Qiying Xu, Huifang Liu, Yi Ye, Tana Wuren, Ri-li Ge   +4 more
doaj   +1 more source

Efficiency of Photovoltaic Systems in Mountainous Areas

, 2018
Photovoltaic (PV) systems have received much attention in recent years due to their ability of efficiently converting solar power into electricity, which offers important benefits to the environment.
Chitturi, Sri Rama Phanindra, Elmenreich, Wilfried, Sharma, Ekanki   +2 more
core   +1 more source

A Geomorphometric Approach to Estimate the Deterioration of Earthen Archaeological Sites by Rainfall and Diffusion Processes: The Huaca Chornancap (Eighth–14th Century ad), Lambayeque, Peru

Archaeological Prospection, EarlyView.
ABSTRACT Rain‐induced erosion processes can severely damage Earthen archaeological sites. Huaca Chornancap (HCH; eighth–14th century ad) is a platform located in the Lambayeque region (Peru) exposed to seasonal rain due to El Niño Southern Oscillation (ENSO).
Luigi Magnini, Maria Ilaria Pannaccione Apa, Robert Gutiérrez Cachay, Marco Fernández Manayalle, Carlos Eduardo Wester La Torre, Guido Ventura   +5 more
wiley   +1 more source