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Francesco Barato
Ablative-cooled hybrid rockets could potentially combine a similar versatility of a liquid propulsion system with a much simplified architecture. These characteristics make this kind of propulsion attractive, among others, for applications such as satell...
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Lorenzo Casalino, Filippo Masseni and Dario Pastrone
An electrically driven pump-fed cycle for a hybrid rocket engine is proposed and compared to a simpler gas-pressurized feed system. A liquid-oxygen/paraffin-based fuel hybrid rocket engine which powers the third stage of a Vega-like launcher is considere...
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Andrzej Walega, Dariusz Mlynski, Andrzej Bogdal and Tomasz Kowalik
Pág. 1 - 15
The paper presents an analysis of the course and frequency of high water stages in selected catchments of the upper Vistula basin in the south of Poland. The following rivers were investigated: the Dunajec?Nowy Targ-Kowaniec cross-section, the Rudawa?Bal...
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Andrzej Walega, Dariusz Mlynski, Andrzej Bogdal and Tomasz Kowalik
The paper presents an analysis of the course and frequency of high water stages in selected catchments of the upper Vistula basin in the south of Poland. The following rivers were investigated: the Dunajec?Nowy Targ-Kowaniec cross-section, the Rudawa?Bal...
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Ramón Blanco-Chao, Manuela Costa-Casais, Daniel Cajade-Pascual and Gonzalo Gómez-Rey
During the last glaciation, thick nival and periglacial sediments buried large sectors of the NW coast of Spain. The sediments were mostly eroded by the rising sea level during the Holocene, but in several places they remain, forming sedimentary cliffs. ...
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Håkan Emteborg and Jean Charoud-Got
A high-resolution infrared (IR) camera was used for temperature measurements in a pharmaceutical formulation (mannitol/sucrose solution, 4:1%, m/m) during a freeze-drying process. The temperature was measured simultaneously at the surface as well as vert...
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Baohua Tan, Enpu Wang, Kan Cao, Lu Xiao and Lina Luo
In order to improve the agility of college students, this paper designs a distributed agility training system. The system includes an upper computer and nine lower computers, in which the lower computer realizes the functions of data acquisition and comm...
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Lucia Sagripanti,German Bottesi,Diego Kietzmann,Andres Folguera,Victor Ramos
Pág. 201 - 219
The orogenic front at 37ºS has been mainly formed through at least two contraccional stages, as inferred from the exhumed major angular unconformities at the Late Eocene and the Late Miocene times respectively. A Late Cretaceous event is restricted to th...
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Norberto Malumian,Eduardo B. Olivero
Pág. 117 - 130
Deep-marine folded Oligocene and contrasting shallow marine subhorizontal Upper Miocene-Pliocene deposits, crop out at the Irigoyen River area within the Fuegian Andes folded belt. The Lower to Upper Oligocene (?Miocene) consists of folded conglomerates,...
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Matias C. Ghiglione,Victor A. Ramos,Ernesto O. Cristallini
Pág. 17 - 41
Foreland basin deposits involved in the Fueguian foreland fold and thrust belt were studied on the Atlantic coast of Tierra del Fuego. More specifically, growth strata developed in middle Eocene sequences deposited in the wedge top depozone were analyzed...
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Chih-Cheng Yang and Chi-Hsuan Liu
Cold forging is widely used in many industries. Multi-stage cold forming is usually utilized in forging fasteners. In this study, numerical simulation and experimental investigations were carried out on a five-stage cold-forming process for the manufactu...
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Manting Zhang, Mingyi Hu, Sile Wei, Quansheng Cai, Wei Fu, Fang Shi, Lei Zhang and Haiyan Ding
The Upper Permian Longtan Shale is a significant reservoir in western Guizhou. To clarify the main factors controlling the low-mature marine?continental transitional shale pore development in western Guizhou, pore types were classified with scanning elec...
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Jin-Zhi Liu, Lian-Da Du, Shao-Min Chen, Jing-Ru Cao, Xiang-Qin Ding, Cheng-Shu Zheng and Cui-Hui Sun
Flower color, a critical phenotypic trait of ornamental plants, is an essential indicator for flower variety classification. Many physical and internal factors that affect flower color have been widely investigated; however, the effects of internal facto...
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Xiangyang Zhou, Zhipan Niu and Wenjuan Lei
The cold-wet effect of oasis improves the extreme natural conditions of the desert areas significantly. However, the relationship between precipitation and the width of oasis is challenged by the shortage of observed data. In this study, the evolution of...
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Guohong Chen, Peng Cai, Jiewei Zhan, Yueqiao Yang, Zhaowei Yao and Zhaoyue Yu
Since the beginning of spring 2022, successive landslides have occurred in the eastern pit slope of the Wolong Coal Mine in Qipanjing Town, Otog Banner, Inner Mongolia, which has adversely affected the mine?s production safety. This study aims to reveal ...
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Janat Musayev, Algazy Zhauyt, Sarakul Ismagulova and Saltanat Yussupova
In the interaction of the rolling stock and the upper structure of the railway track, intense dynamic loads occur. They have a destructive effect both on the parts of the rolling stock and on the elements of the superstructure of the track. In order to d...
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Rye-Kyeong Kim, Nyeonju Kang, Zeel Desai and James H. Cauraugh
Two popular chronic stroke rehabilitation protocols are robotic-assisted movements and transcranial direct current stimulation (tDCS). Separately, both protocols have produced encouraging motor recovery improvements. An intriguing question remains: what ...
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Ádám Nádudvari, Agnieszka Czajka, Bartlomiej Wyzga, Marcin Zygmunt and Marcin Wdowikowski
Our research introduces the river regulation effects on three sections of the upper and middle Odra River (south-western Poland), with differently channelized parts. In the upper and lower reaches, the river was straightened, narrowed, and trained with g...
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Tao Li, Yuesong Tang, Lianghui Li, Haoyu Hu, Zheng Li, Jiqing He and Bochao An
Taking the 14,030 panel of Zhaogu No. 2 coal mine as its research object, this paper studies the evolution characteristics of the developing height, propagation track and caving arch shape of water-flowing fractures under the influence of thick alluvium ...
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Xiaorui Wang, Xu Liu, Yunhong Lin and Fei Tan
Small curved metro shield tunnels located in fine sand layers are sensitive to the response of horizontal and vertical cyclic loads from train operations, especially for centrifugal horizontal loads. The majority of Zhengzhou?s strata are dominated by th...
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