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What (who) is raise concern - definition

RAISE IS A SHAFT IN A MINE WHICH JOINS TWO LEVELS BY DEFINITION MINED UPWARDS

Raiseboring; Raise-borer; Raise-bore; Raise bore; Raisebore; Raise drilling

Leg raise

STRENGTH TRAINING EXERCISE

Knee raise; Leg raises

The leg raise is a strength training exercise which targets the iliopsoas (the anterior hip flexors). Because the abdominal muscles are used isometrically to stabilize the body during the motion, leg raises are also often used to strengthen the rectus abdominis muscle and the internal and external oblique muscles.

https://en.wikipedia.org/wiki/Leg_raise

Variant of concern

NEWLY EMERGED VARIANT OF A VIRUS WITH TRANSMISSIBILITY AND VIRULENCE THAT CAUSES CONCERNS

Variant of Concern; Variant of interest; Variants of concern

The term variant of concern (VOC) for SARS-CoV-2, which causes COVID-19, is a category used for variants of the virus where mutations in their spike protein receptor binding domain (RBD) substantially increase binding affinity (e.g.

https://en.wikipedia.org/wiki/Variant_of_concern

Expression of concern

A PUBLISHED EDITORIAL THAT FORMALLY INDICATES POSSIBLE PROBLEMS WITH A SCIENTIFIC ARTICLE, SUCH AS AN ONGOING INVESTIGATION OF MISCONDUCT

Expressions of concern

In academic publishing, an expression of concern is a notice issued by a publisher against a particular publication, warning that it may contain errors or be otherwise untrustworthy..

https://en.wikipedia.org/wiki/Expression_of_concern

Wikipedia

Raise borer

A raise borer is a machine used in underground mining, to excavate a circular hole between two levels of a mine without the use of explosives.

The raise borer is set up on the upper level of the two levels to be connected, on an evenly laid platform (typically a concrete pad). A small-diameter hole (pilot hole) is drilled to the level required; the diameter of this hole is typically 230mm - 445mm (9" - 17.5"), large enough to accommodate the drill string. Once the drill has broken into the opening on the target level, the bit is removed and a reamer head, of the required diameter of the excavation, is attached to the drill string and raised back towards the machine. The drill cuttings from the reamer head fall to the floor of the lower level. The finished raise has smooth walls and may not require rock bolting or other forms of ground support. One impressive use of raise boring is the 7.1 m diameter shafts for Sasol's Middelbult and Bosjesspruit Mines in South Africa.

The boxhole borer (or machine roger) is a variant of a raise borer that is used when there is not enough space on the higher of the two levels to be connected. The boxhole borer is set up on the lower level, drills a pilot hole as a guide, then drives the reamer bit along the pilot hole from the lower level to the upper. Precautions have to be taken to redirect falling drill cuttings away from the machine, and to reinforce the drill string.

https://en.wikipedia.org/wiki/Raise borer

Examples of use of raise concern

1. Okulitch‘s agency was among the first to raise concern about the novelty lighters.

2. "The nature and number of these improvised items raise concern," the bulletin noted.

3. The unusual nature and increase in number of these improvised items raise concern." It did not identify the passengers.

4. Dual loyalty dilemma Hesder Yeshivas‘ divided loyalties raise concern among IDF officials, threatening to shut them down. .

5. In recent weeks, Sudan has engaged in bureaucratic delays that raise concern about its commitment to the new peacekeeping mission, GuÂ¿henno said.