Abstract The Tamins rock avalanche lies adjacent to the Flims avalanche, largest in Alps. Its deposit forms a ridge across Rhine Valley just downstream of confluence Vorderrhein and Hinterrhein rivers. is dominated by 1.6-km-long longitudinal ridge, Ils Aults, two roughly 600-m-long transverse ridges. Several extensional scarps bear witness spreading deposit. A breach through deposit, where Riv...

With the continuous development of high-pressure water jet technology, research on optimization structural parameters for multi-nozzle configurations, perforation effect rotational impact rock breaking, and force during breaking has received increasing attention. Through a self-designed drilling test device, experiments were conducted sandstone different strengths using streams with inclination...

The rapid discharge of gas and rock fragments during volcanic eruptions generates acoustic infrasound. Here we present results from the inversion of infrasound signals associated with small and moderate gas-and-ash explosions at Santiaguito volcano, Guatemala, to retrieve the time history of mass eruption rate at the vent. Acoustic waveform inversion is complemented by analyses of thermal infra...

Altered nuclear shape is a defining feature of cancer cells. The mechanisms underlying nuclear dysmorphia in cancer remain poorly understood. Here we identify PPP1R12A and PPP1CB, two subunits of the myosin phosphatase complex that antagonizes actomyosin contractility, as proteins safeguarding nuclear integrity. Loss of PPP1R12A or PPP1CB causes nuclear fragmentation, nuclear envelope rupture, ...

Despite their cosmopolitan distribution, knowledge on cyanobacteria in the family Coelosphaeriaceae is limited. In this study, a single species culture of a coelosphaeran cyanobacterium isolated from a brackish rock pool in the Baltic Sea was established. The strain was characterized by morphological features, partial 16S rRNA sequence and nonribosomal oligopeptide profile. The bioactivity of f...

[1] Recent observations of nanometer-scale particles in the cores of exhumed fault zones raise questions about how such small particles are formed and how they survive, especially if significant shear heating is produced during an earthquake. Commercial crushing and grinding operations encounter a grind limit near 1 mm below which particles deform plastically rather than fracturing. A fragmenta...

Multicondition-driven mechanisms may produce pyroclastic deposits varying in fundamental properties such as dispersal, grain size, vesicularity and morphology of juvenile clasts, and the abundance of lithic or ‘‘wall rock’’ ejecta (xenoliths). Volcanic ash particles from different fragmentation mechanisms have different surface textures and morphologies. The analysis of the volcanic clast shape...

Due to the opaqueness of rock and limitation detection technology, it is impossible accurately describe crack growth process determine law breakage. Based on smoothed particle hydrodynamics finite element method (SPH-FEM), a numerical model for high-speed water jet breaking was established in this work simulate fragmentation impacted by jet, study effects different angles propagation microscopi...