Indirect method for the quantitative identification of unstable rock

2022 ◽  
Author(s):  
Yan Du ◽  
Mowen Xie
Keyword(s):  
Indirect Method ◽  
Quantitative Identification ◽  
Unstable Rock

scholarly journals An Indirect Method for the Quantitative Identification of Unstable Rock

2021 ◽  
Author(s):  
YAN DU ◽  
Mowen Xie
Keyword(s):  
Safety Factor ◽  
Natural Vibration ◽  
Low Cost ◽  
Stable State ◽  
Natural Vibration Frequency ◽  
Mechanical Index ◽  
Rock Collapse ◽  
Quantitative Identification ◽  
Slope Rock ◽  
Unstable Rock

Abstract Under the influence of continuous external factors (rainfall, earthquake, construction, etc.), the slope rock mass in a stable state gradually transited to an unstable rock, and then the unstable rock collapsed. However, a safety factor can identify the occurrence of failure but cannot identify the transition of stable rock to unstable rock; thus, it cannot realise the quantitative identification of unstable rocks. In this study, safety factor of adhesion (SFA ) and a relatively objective analysis method are proposed to effectively identify unstable rocks. SFA can be calculated by natural vibration frequency and applied as a mechanical index to judge unstable rock. When SFA is less than 1, the rock is defined as an unstable rock. Compared with the traditional method, the new method has the merits of simple operation, low cost and higher efficiency, and provides a relatively complete quantitative evaluation index and judgment criteria for quantitative identification of unstable rocks for engineers who are engaged in early warning and prevention of rock collapse.

Advanced indirect method for measuring blood pressure

2009 ◽  
Vol 53 (3-4) ◽  
pp. 115 ◽  
Author(s):  
Péter Csordás ◽  
András Mersich ◽  
Ákos Jobbágy
Keyword(s):  
Blood Pressure ◽  
Indirect Method

The Use of Hair Tubes as an Indirect Method for Monitoring Red and Grey Squirrel Populations

2007 ◽  
Vol 107 (2) ◽  
pp. 55-60 ◽  
Author(s):  
Laura Finnegan ◽  
Geoff Hamilton ◽  
Julie Perol ◽  
John Rochford
Keyword(s):  
Indirect Method ◽  
Grey Squirrel

Milk acetone determination by the photometrical method after microdiffusion and via FT infra-red spectroscopy

2011 ◽  
Vol 28 (1) ◽  
pp. 33-48 ◽  
Author(s):  
Oto Hanuš ◽  
Václava Genčurová ◽  
Yunhai Zhang ◽  
Pavel Hering ◽  
Jaroslav Kopecký ◽  
...  
Keyword(s):  
Infrared Spectroscopy ◽  
Indirect Method ◽  
Geometric Mean ◽  
Mid Infrared ◽  
Subclinical Ketosis ◽  
Infra Red ◽  
Variation Range ◽  
Ft Ir ◽  
Infrared Method ◽  
Photometrical Method

Milk acetone determination by the photometrical method after microdiffusion and via FT infra-red spectroscopyMilk acetone (AC) and betahydroxybutyrate (BHB) are important indicators of the energy metabolism of cows (ketosis occurrence) and an effective method for their determination, with reliable results, is of great importance. The goal of this work was to investigate the infrared method MIR-FT in terms of its calibration for milk AC and to develop a usable procedure. The microdiffusion photometric (485 nm; Spekol 11) method was used with salicylaldehyde as a reference (Re) and mid infrared spectroscopy FT (MIR-FT: Lactoscope FT-IR, Delta; MilkoScan FT 6000, M-Sc) as an indirect method. The acetone addition to milk had no recovery using MIR-FT (Delta). The reference AC set must have acceptable statistics for good MIR-FT calibration (M-Sc) and they were: 10.1 ± 9.74 at a geometric mean of 7.26 mg l-1, and a variation range from 1.98 to 33.66 mg l-1. The AC correlation between Re and MIR-FT (Delta) was low at 0.32 (P>0.05 but the Log AC relationship between Re and MIR-FT (M-Sc) was markedly better at 0.80 (P<0.01). The conversion of >10 mg l-1 as an AC subclinical ketosis limit could be > -0.80 (feedback 0.158 mmol l-1 = 9.25 mg l-1) and > -1.66. This could be important for ketosis monitoring (using M-Sc).

Grammatical Problems In Introduction Section Of Thesis Written By English Literature Students

Jurnal KATA ◽  
2018 ◽  
Vol 2 (1) ◽  
pp. 107
Author(s):  
Silvia Utami
Keyword(s):  
Qualitative Research ◽  
Indirect Method ◽  
English Literature ◽  
Writing Studies ◽  
Background Information ◽  
Verb Agreement ◽  
Grammatical Errors ◽  
Teaching Grammar ◽  
Descriptive Qualitative

<p><em>Introduction section is the first section of the thesis that has an important role which summarizes background information about the topic. The ability to write a clear and concise introduction section of a thesis is indispensable skill to writers; thus it is essential for students to be aware of linguistic aspects of writing. Past literature in writing studies have shown that although many studies have been written about the grammatical errors and mistakes in writing, there is very little research done on grammatical problems in writing introduction section of thesis. This research was a descriptive qualitative research which aimed to analyze grammatical problems found in the introduction section of thesis written by English literature students at STIBA Persada Bunda Pekanbaru. The source of data in this research was documents taken from students’ thesis. The data were collected by using coding sheets. The findings of this research showed that the most common grammatical problems found in introduction section of thesis was incorrect verbs which dominated by tenses confusion and lack of subject and verb agreement. The possible solutions to overcome students’ grammatical problems were using indirect method in teaching grammar and prioritizing grammar structures to teach.</em></p>

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