Results 101 to 110 of about 38,263 (298)

Mechanism of “seesaw‐type” rock burst in coal seam mining beneath mountainous areas

Deep Underground Science and Engineering, EarlyView.
This study reveals the mechanism of “seesaw‐type” rock bursts during coal mining beneath mountainous areas. The advancing working face induces nonuniform fracturing of the overburden. The detached mountain mass then undergoes a seesaw‐type rotational movement around a shifting pivot, driving the primary fracture through a characteristic “open‐close ...
Chao Zhou, Xueqiu He, Zhenlei Li, Ping Wang, Dazhao Song, Fuxing Jiang, Shan Yin, Anliang Lü, Menghan Wei, Taoping Zhong   +9 more
wiley   +1 more source

Energy evolution‐based damage quantification and failure prediction of fault zone tunnel lining concrete: A novel acoustic emission–strain energy coupling approach

Deep Underground Science and Engineering, EarlyView.
This study investigates the damage evolution and failure mechanisms of tunnel lining concrete in active fault zones through uniaxial compression tests integrated with acoustic emission (AE) monitoring. A strong linear correlation is identified between the AE cumulative absolute energy and the total strain energy, providing a reliable energy‐based ...
Shuaida Zhu, Dongming Zhang, Mingliang Zhou, Shengjun Duo, Hongwei Huang   +4 more
wiley   +1 more source

Concrete mixtures with high-workability for ballastless slab tracks

, 2017
The concrete track-supporting layer and the monolithic concrete slab of ballastless track systems are made in-situ. For this reason the concrete mixtures of high workability should be used.
Olga Smirnova
core   +1 more source

From Policy Presence to Policy Performance: Adaptive Improvisation and the Everyday Politics of Plastic Burning Bans in Rural Indonesia

Environmental Policy and Governance, EarlyView.
ABSTRACT Open burning plastics is a major environmental health hazard in low‐ and middle‐income countries, releasing toxic pollutants and exacerbating climate change. Although Indonesia prohibits plastic burning, enforcement in rural settings remains fragile.
Sujarwoto Sujarwoto, Sekar Aqila Salsabila, Devita Rahmani Ratri, Asri Maharani   +3 more
wiley   +1 more source

Workability Limit Diagram at Plane Stress Condition

Numerous experimental studies of workability limit diagrams in the domain of bulk deformation have been performed on specimens where failure occurs at the free surface, i.e., under plane stress conditions.
Marko Vilotić, Mladomir Milutinović, Dragiša Vilotić, Sergej Aleksandrov, Marina Rynkovskaya   +4 more
core   +1 more source

Tissue Clearing for Lymph Nodes: 3D Mapping of Nerves and the Immune Microenvironment

iNew Medicine, EarlyView.
ABSTRACT Lymph nodes (LNs) are central hubs of adaptive immunity and key relay sites for metastatic tumour cells. However, conventional two‐dimensional histology samples only a small fraction of each node, potentially missing micrometastases and multifocal involvement while obscuring long‐range spatial relationships among tumour deposits, immune ...
Guang‐Hong Su, Fei Wang, Ting‐Hong Wei, Rui Lu, Wen‐Jun Huang, Xiang Zhang, Ling Yin, Jun Li   +7 more
wiley   +1 more source

Synergistic Effects and Mechanisms of Plant Ash and Activator on Geopolymer Gel Formation, Hydration Evolution and Mechanical Properties

Gels
Against the backdrop of promoting green buildings and a circular economy, the development of efficient, sustainable, and low-carbon cementitious materials is of great significance for reducing resource consumption and carbon emissions.
Shoukai Chen, Yutong Tian, Jialin Chen, Hang Wang, Qingfeng Hu   +4 more
doaj   +1 more source

An in vitro comparison of PDGF‐BB release from composite graft materials containing leukocyte‐rich platelet‐rich fibrin and platelet‐derived growth factor‐BB and β‐tricalcium phosphate

Journal of Periodontology, EarlyView.
Abstract Background The clinical efficacy of growth factors in regenerative procedures may depend on both dosage and sustained delivery during critical phases of healing. This study aimed to evaluate in vitro release kinetics of platelet‐derived growth factor‐BB (PDGF‐BB) from various graft materials, including recombinant human PDGF‐BB (rhPDGF‐BB ...
Farahnaz Fahimipour, Maggie A. Misch‐Haring, Ramzi V. Abou Arraj, Nicolaas C. Geurs, Maria L. Geisinger   +4 more
wiley   +1 more source

Influence of the milker on milkability of cows of the Bulgarian Rhodope Cattle breed

Животновъдни науки
The milker's influence on the cows' milkability was studied in the local mountain breed, Bulgarian Rhodope cattle. The study included 18 cows, and on the 30th day after calving, the speed of the milk flow was measured at each milking at an interval of ...
Atanaska Zgurova, Vasil Nikolov
doaj   +1 more source

Fritz Scheffer Under National Socialism: Assessing His Political Involvement

Journal of Plant Nutrition and Soil Science, EarlyView.
ABSTRACT Aims This article examines the role of soil scientist Fritz Scheffer (1899–1979) under National Socialism and offers a critical assessment of his scientific, institutional, and political positioning between 1933 and 1945. It asks how Scheffer shaped his career within the tension between disciplinary specialization, political expectations, and ...
Jan Arend
wiley   +1 more source