3D Physical Modelling Study of Shield-Strata Interaction under Roof Dynamic Loading Condition by Shengli Yang, Hao Yue, Gaofeng Song, Junjie Wang, Yanyao Ma, Fengqi Liu

“…A steel plate is dropped to the coal face wall at a certain height above the immediate roof to simulate the free fall of the main roof and the dynamic impact loading environment. …”
Get full text

Surrounding Rock Stresses on a Working Face-End Roof under Mining Influence by Kang Wang, Xinglong Huang, Haibo Li, Feng Zhang, Jiazhen Li, Zhijie Zhu

“…The evolution process of the surrounding rock failure mechanism is studied because of spalling and roof fall accidents at the top corner of longwall top coal caving faces affected by mining and the difficulty of moving the advanced end support. …”
Get full text

Keeping it Safe: Extension Cords by Mary N. Harrison

“…It is best to plug an electrical device directly into the wall outlet if you can. That is not always possible. …”
Get full text

Keeping it Safe: Extension Cords by Mary N. Harrison

“…It is best to plug an electrical device directly into the wall outlet if you can. That is not always possible. …”
Get full text

Utopie – ostalgie – nostalgie : aller-retour en ex-RDA by Marina Chauliac

“…During the twenty years after the fall of the Berlin Wall, from 1989 till 2009, nostalgia took singular social forms in the former GDR. …”
Get full text

The New South Africa and international news flow by Arnold de Beer, Lynnette Serfontein, Annelie Naude

“…The end of the Cold War and the fall of the Berlin Wall demand not only new cartographic and conceptual maps, but also new news media maps, espeially of Africa. …”
Get full text

Metropolisation and the Evoluti on of Systems of Cities in the Czech Republic, Hungary and Poland Since 1950 by Natalia Zdanowska

“…This article examines the evolution of systems of cities in the Czech Republic, Hungary and Poland since 1950, and especially since the fall of the Berlin Wall in 1989 when Central and Eastern European cities started to experience the process of metropolisation. …”
Get full text

Shape Optimization and Hydraulic Characteristics Analysis of Unilateral Divergent Stilling Basin by SHI Linping, LIAO Zhiying, XIE Zhigao, ZHOU Xuncheng, TU Xiangyang

“…The water flow in the river is dispersed and the flow velocity falls. The research results can provide a reference for similar projects.…”
Get full text

Delayed Presentation of Intussusception with Perforation after Splenectomy in Patient with Blunt Abdominal Trauma by Ibrahim Afifi, Hassan Al-Thani, Sajid Attique, Sherwan Khoschnau, Ayman El-Menyar, Rifat Latifi

“…We present a case of delayed diagnosis of ileocecal junction intussusception with a perforation of small bowel in a 34-year-old male with a history of fall from height. Initial exploratory laparotomy revealed shattered spleen requiring splenectomy. …”
Get full text

Mechanisms and Clinical Management of Ventricular Arrhythmias following Blunt Chest Trauma by Daniel H. Wolbrom, Aleef Rahman, Cory M. Tschabrunn

“…Ventricular fibrillation can occur immediately after chest wall injury (commotio cordis) and requires rapid defibrillation. …”
Get full text

Penetrating Heart Injury due to Screwdriver Assault by P. A. Dieng, M. S. Diop, A. G. Ciss, P. S. Ba, S. Diatta, M. Gaye, M. L. Fall, A. Ndiaye, M. Ndiaye

Get full text

Postoperative extraperitoneal bladder injury after metal pelvic osteosynthesis for pelvic injury by Khalid Abdullahi, Obadele Olusegun George, Ajiboye Lukman Olalekan, Abubakar Isiyaku, Muhammad Abubakar Sadiq, Aljannare Bashir Garba, Okezie Chukwuebuka Kingsley, Agwu Ngwobia Peter

“…The causes are numerous, including road traffic crashes, falls from heights, gunshot injuries, and iatrogenic causes, among others. …”
Get full text

Damage Characteristics Caused by Deep-Hole Blasting near Normal Fault and Its Effects on Coal and Gas Outbursts by Kui Gao, Guodong Qiao, Zegong Liu, Wei Xia

“…The propagation of cracks near the blasting hole produces crushing circles, and more cracks are produced in the normal-fault model, causing severe damage to the coal seam and floor rock adjacent to the upper wall of the normal fault. Meanwhile, coal on the surface of the coal seam falls off. …”
Get full text

Shield-Roof Interaction in Longwall Panels: Insights from Field Data and Their Application to Ground Control by Jingyi Cheng, Zhijun Wan, Yinlin Ji

“…Finally, we propose the research prospects on shield-roof interaction in longwall panels to achieve a more reasonable determination of shield capacity, prediction of roof fall and coal wall spalling, and self-adaptive control of the shield.…”
Get full text

Study on the heat transfer characteristics of mine roadway surrounding rock under periodic airflow temperature: Numerical simulation and experimental validation by Mingyan Guo, Yueping Qin, Dongyang Han, Fei Tang, Shibin Wang, Hairong Wang

“…(iv) The formula of dimensionless wall heat flux wave of surrounding rock was obtained by fitting.…”
Get full text

Leadership and Nigeria's Regional Hegemonic Quest in Africa: A Critical Discus by GAMBO Nanven Audu, PULDU Samdi Gloria, KUMS Simon Nankap

“… The aftermath of the Cold War and the fall of the Berlin wall re-mirrored and reconfigured the nature and patterns of game and/or relations in the international ambiance. …”
Get full text

Entropy Analysis of Carreau Nanofluid Flow in the Presence of Joule Heating and Viscous Dissipation Past Unsteady Stretching Cylinder by Eshetu Haile Gorfie, Gizachew Bayou Zegeye, Gurju Awgichew Zergaw

“…An increase in the Eckert number, Prandtl number, and radiation parameter motivates the irreversibility due to heat transfer, whereas as the Weissenberg number rises, the irreversibility of heat transfer falls around the wall. According to the numerical values in the table, growth in Weissenberg number, thermal Biot number, Forchheimer number, curvature parameter, and radiation parameter initiate the magnitude of the rate of heat and mass transfers. …”
Get full text

Thermohydraulic performance evaluation of a heat exchanger mounted with oval inclined twisted rings by P. Samruaisin, V. Chuwattanakul, P. Thapmanee, M. Kumar, P. Naphon, N. Maruyama, M. Hirota, S. Eiamsa-ard

“…Heat transfer enhancement, friction factor, and thermal enhancement factor tests were conducted under uniform wall heat flux with Reynolds numbers (Re) varying from 6000 to 20,000. …”
Get full text

The Role of Therapeutic Anticoagulation in COVID-19 by Ruth McGovern, Patrick Conway, Isabell Pekrul, Omar Tujjar

“…The ECG was normal, and a bedside transthoracic echocardiogram showed no evidence of pulmonary embolism and a preserved EF with no regional wall motion abnormalities (RMWA). The chest X-ray was not dissimilar to previous exams, and the ABG showed hypoxia with normal pCO2 values. …”
Get full text

Construire des ressources relationnelles pour franchir des frontières multiples : Trajectoires de jeunes Tunisiens by Hasnia-Sonia Missaoui

“…These links, which may be one-off or last a lifetime, can counterbalance “vertical” aspirations that are often disappointed and the constant feeling of being up against the wall. They can sometimes be a real resource for upward mobility, but more generally, as collective commitment wanes a few years after the fall of the dictatorship, they restore a sense of belonging and can be an antidote to disenchantment.…”
Get full text