Bs En 196-1
Bs En 196-1 - Related Videos
10:01
En Face Preparation of Mouse Blood Vessels
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Cited by 20 •
2017
A procedure for making en face preparations of the mouse carotid artery and aorta is described. Such preparations, when immunofluorescently stained with specific antibodies, enable us to study localization of proteins and identification of cell types within the entire vascular wall by confocal microscopy.
10:34
Robotic Central Pancreatectomy with Roux-en-Y Pancreaticojejunostomy
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Cited by 7 •
2021
Robotic central pancreatectomy may be used in selected patients in experienced centers. This protocol presents all steps and the feasibility of a robotic central pancreatectomy with Roux-en-Y pancreaticojejunostomy in a 16-year-old adolescent patient.
11:58
A Protocol for Roux-en-Y Gastric Bypass in Rats using Linear Staplers
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Cited by 1 •
2021
Roux-en-Y gastric bypass (RYGB) is performed to treat obesity and diabetes. However, the mechanisms underlying RYGB's efficacy are not fully understood, and studies are limited by technical difficulty leading to high mortality in animal models. This article provides instructions on how to perform RYGB in rats with high success rates.
07:37
Roux-en-Y Gastric Bypass Operation in Rats
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Cited by 48 •
2012
Numerous studies using gastric bypass rat models have been recently conducted to uncover the underlying physiological mechanisms of Roux-en-Y gastric bypass operations. This article aims to demonstrate and discuss the technical and experimental details of our published gastric bypass rat model to understand advantages and limitations of this experimental tool.
08:57
En Face Endocardial Cushion Preparation for Planar Morphogenesis Analysis in Mouse Embryos
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Cited by 2 •
2022
Classically, the endocardium of the mouse embryonic valve primordium has been analyzed using transversal, coronal, or sagittal sections. Our novel approach for en face, two-dimensional imaging of the endocardium at valvulogenic regions allows planar polarity and cell rearrangement analysis of the endocardium during valve development.
FAQs
A standardized mortar provides a consistent combination of cement, graded sand, and water for comparing cement performance. By reducing variation in the test mixture and specimen preparation, the method creates results that can be compared across cement products. This consistency makes the procedure useful for engineering quality control, product development, and compliance assessment.
The two measurements examine strength through sequential loading stages. First, flexural loading breaks each 40 × 40 × 160 mm prism and provides a flexural-strength result. The resulting halves are then tested in compression, allowing compressive strength to be measured from material produced during the same specimen test. Together, the results give complementary information about cement performance.
Cement strength changes as specimens cure, so testing age and curing conditions must be controlled to make results meaningful. BS EN 196-1 defines when measurements are taken and maintains consistent conditions before testing. This allows laboratories to compare strength development between cement products without confusing differences in curing history with differences in binder performance.
The procedure uses mortar made from cement, graded sand, and water, shaped into 40 × 40 × 160 mm prism specimens. These dimensions provide a defined form for the subsequent flexural and compressive measurements. Using the specified materials and geometry helps laboratories produce comparable results and limits variation caused by specimen preparation.
The workflow begins with preparing the standardized mortar and forming prism specimens. The prisms are then cured under controlled conditions until the defined testing ages. Each prism undergoes flexural loading and breaks into halves, after which those halves are subjected to compression testing. The sequence produces both flexural and compressive strength results for evaluation.
The method supports cement quality control, product development, and compliance assessment. Its standardized preparation, specimen dimensions, curing conditions, and loading sequence provide a common basis for comparing cement performance. Engineers can use the resulting strength information when evaluating cement products and selecting suitable binders for concrete and other cement-based construction materials.