نتایج جستجو برای: final pit limits

تعداد نتایج: 319280  

2014
Efstratios A. Parikakis Irini P. Chatziralli Vasileios G. Peponis Dimitrios Karagiannis Aimilianos Stratos Vasileia A. Tsiotra Panagiotis G. Mitropoulos

PURPOSE To report a case of spontaneous resolution of a long-standing serous macular detachment associated with an optic disc pit, leading to significant visual improvement. CASE PRESENTATION A 63-year-old female presented with a 6-month history of blurred vision and micropsia in her left eye. Her best-corrected visual acuity was 6/24 in the left eye, and fundoscopy revealed serous macular de...

Journal: :Navigation: journal of the Institute of Navigation 2023

Abstract The automation of mining haulage vehicles has great potential in terms safety and economy. performance autonomous depends largely on highly accurate vehicle state information. Deep mines are especially challenging, as satellite-based localization methods reaching their limits. Therefore, we introduce a new navigation filter concept for the precise robust fleet that can handle ...

Journal: :Mining of Mineral Deposits 2021

Purpose. Research into influence of drilling-and-blasting operations on the nature deformation in near-side masses design open-pit contours and assessing seismic impact blasting operations, which are basis for development recommendations rational parameters operations. Methods. The at limiting contour Kusmuryn field is studied using analysis mining-and-geological conditions tectonics rocks cons...

2015
Laís Orrico Donnabella Bastos Marilisa Mantovani Guerreiro Andrew John Lees Thomas T. Warner Laura Silveira-Moriyama Nadine Ravel

OBJECTIVES To study the effects of age and cognition on the performance of children aged 3 to 18 years on a culturally adapted version of the 16 item smell identification test from Sniffin' Sticks (SS16). METHODS A series of pilots were conducted on 29 children aged 3 to 18 years old and 23 adults to produce an adapted version of the SS16 suitable for Brazilian children (SS16-Child). A final ...

Journal: :Nucleic acids research 1991
A M Lew H P Elsholtz

The mammalian pit-1 gene encodes a 33 kd transcription factor (1,2) expressed in a subset of endocrine cells of the anterior pituitary (3). Pit-1 is structurally related to the POU family of transcriptional regulators (4), containing a characteristic POU domain divided into two regions, the POU-specific and homeo subdomains. Located in the C-terminal half of the protein, the POU domain is criti...

Journal: :Earth, Planets and Space 2022

Experiments on crater formation in the strength regime were conducted using projectiles of various shapes with an aspect ratio ~1, including both solid and hollow interiors. The surface diameter, inner (pit) depth craters basalt porous gypsum targets measured. Using bulk density projectile, diameter for pit scaled pi-scaling law regime. numerical code iSALE was used to simulate impact interior ...

2006
D. Covès M. Beauchaud J. Attia G. Dutto

In two experiments, a computerized on-demand feeding system coupled with a PIT tag monitoring device was used to continuously record the triggering activity by ca. 50 individual sea bass for 55 days (Exp. 1, initial average body weight and coefficient of variation, CV: 299 g, 15%) and 69 days (Exp. 2, 157 g, 13%). Each group was stocked in 1 m3 tanks and exposed to a water temperature of 21 ± 1...

Journal: :Journal of The South African Institute of Mining and Metallurgy 2023

The results of dig limit delineation in open pit mining are never truly optimized due to gaps the underlying data, such as insufficient sampling. Aside from data uncertainty, there is also an influence on final by either humans or heuristic character optimization method like simulated annealing. Several optimizers have been published, which can replace manual dig-limits designing process. Howev...

One of the most effective parameters in economics of open-pit mines is the pit slope angle, so that the slope angle more than the optimum value increases the probability of a large failure in the pit wall and the slope angle less than the optimum value leads to increasing stripping ratio and reducing net present value of mine. Therefore, in this paper, considering the limit equilibrium methods ...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید