Results 81 to 90 of about 40,134 (307)

The influence of the acid water of the Banyupait River on the community health in Bantal village, Asembagus, Indonesia

Water Science and Technology
The pH of Mount Ijen crater water is 0-2, resulting in water that is acidic and sulfurous. A fault near the Mount Ijen Crater causes seepage so that acidic water flows into the Banyupait River.
Dwi Fitri Yudiantoro, Bambang Irawan, Intan Paramita Haty, Setia Pambudi, Shalva Tmy, Arum Suproborini, Sekar Bawaningrum, Paramita Ismaya, Mirzam Abdurrachman, Isao Takashima, Temmy Wikaningrum, Noor Cahyo Aryanto   +11 more
doaj   +1 more source

Experimental Investigation of the Crater Caused by Hypervelocity Rod Projectile Impacting on Rocks

Shock and Vibration, 2020
To investigate the cratering effects of hypervelocity rod projectile impacting on rocks, a two-stage light gas gun was used to carry out 10 groups of small-scale experiments, whose velocity ranges from 1.5 km/s to 4.1 km/s.
Yanyu Qiu, Songlin Yue, Mingyang Wang, Gan Li, Yihao Cheng, Zhangyong Zhao, Zhongwei Zhang   +6 more
doaj   +1 more source

Impact of abrasive versus non‐abrasive cleaning on peri‐implantitis titanium release: A randomized clinical trial

Journal of Periodontology, EarlyView.
Abstract Background Surface decontamination is integral to peri‐implantitis treatment. However, abrasive mechanical methods can cause implant surface degradation with possible adverse biological effects. No human studies have examined whether these treatments cause titanium release or impair regenerative outcomes.
Georgios A. Kotsakis, Antonella Botto, Marzieh S. Jazaeri, Archontia Palaiologou, Eddie Lee, Diane M. Daubert   +5 more
wiley   +1 more source

Shared foraging behaviors between hyenas and hominins in the Middle Paleolithic Levant: New evidence from Geula Cave, Israel

Journal of Quaternary Science, EarlyView.
ABSTRACT While competition with large carnivores is likely to have shaped Middle Paleolithic hominins' subsistence behavior, palimpsested human and carnivore accumulations render the signal challenging to isolate. This study presents a detailed zooarchaeological and taphonomic analysis of a non‐anthropogenic faunal assemblage from a MIS 5 (~130–80 ka ...
Meir Orbach, Omry Barzilai, Israel Hershkovitz, Ma'ayan Lev, Reuven Yeshurun   +4 more
wiley   +1 more source

A multi-proxy study of the Kalkkop impact Crater Lake deposits in south-central South Africa: implications for late neogene climate evolution

, 2014
Includes bibliographical references.The Kalkkop Crater Lake deposit formed as a result of a meteorite impact, and is situated ~51 km southwest of Graaff-Reinet in the Southern part of South Africa.
Mthembi, Ponani
core  

Geological and geophysical investigation of Kamil crater, Egypt [PDF]

, 2012
We detail the Kamil crater (Egypt) structure and refine the impact scenario, based on the geological and geophysical data collected during our first expedition in February 2010.
Mahfooz Hafez, El Khrepy, S., El Barkooky, A., Mohamed El Gabry, D’Orazio, M., Antonio Zeoli, Luigi Folco, El Gabry, M., Sami El Khrepy, Ali M. Radwan, Mohamed El Sharkawi, Massimo D’orazio, Radwan, A. M., El Sharkawi, M., Ahmed Lethy, Barakat, A., Aly Barakat, Urbini, S., Zeoli, A., Hafez, M., Ahmed El Barkooky, Gomaa, M., Mahomoud GOMAA, Iacopo Nicolosi, Nicolosi, I., Stefano Urbini, Lethy, A., Folco, L.   +27 more
core   +1 more source

Reidite Formation From Zircon Subjected to 20, 40, and 60 GPa Shock Experiments

Journal of Raman Spectroscopy, EarlyView.
Structure disordering as a result of shock pressure: In zircon shocked from 20 to 60 GPa, the shock‐induced structural disorder increases with increasing shock pressure (gray area). Shock disorder of zircon is an integral part of its transformation to reidite: Reidite occurs after amorphous material.
Dmitry A. Zamyatin, Elizaveta Kovaleva
wiley   +1 more source

A Review of Deep Space Image-Based Navigation Methods

Aerospace
Deep space exploration missions face technical challenges such as long-distance communication delays and high-precision autonomous positioning. Traditional ground-based telemetry and control as well as inertial navigation schemes struggle to meet mission
Xiaoyi Lin, Tao Li, Baocheng Hua, Lin Li, Chunhui Zhao   +4 more
doaj   +1 more source

Phantom Ship, Crater Lake National Park

, 1970
Postcard of the Phantom Ship in Crater Lake National Park. | Towering more than 165 feet above Crater Lake's blue, the Phantom Ship, formed by the volcano whose eruptions created the lake, serenely withstands the centuries.photographic ...

core  

Lamington, Foot of the Lane School with students

, 1890
Students at Foot of the Lane School during the 1890s. Students identified are: First row: 4th from left, Ruston Crater Second row: 3rd from left, Fanny Crater; 5th from left, John Rinehart; 6th from left, Kate Lane. Far right, Runkle Hageman.

core   +1 more source