Conduct clearance dust sampling of floors, interior window sills, and window troughs using the protocol in this chapter. Conduct clearance soil sampling if bare soil is present that was not sampled previously, or if exterior paint work was completed …

HUD Office of Lead Hazard Control and Healthy Homes, February 17, 2017 Goal: Establish more protective requirements for dust-lead action levels for risk assessments and clearance, for Lead Hazard Control (LHC) grants (Lead-Based Paint Hazard Control grants and Lead Hazard Reduction Demonstration grants). Effective date: April 1, 2017

Determine if encapsulants can be used. Do not encapsulate the following surfaces: Friction surfaces, such as window jambs and door jambs. Surfaces that fail patch tests. Surfaces with substrates or existing coatings that have a high level of deterioration. Surfaces in which there is a known incompatibility between two existing paint layers.

2. Single Surface Wipe Sampling Procedure A. Outline the sample area. 1. The area to be sampled (i.e., the area to be wiped) must be a rectangle or square with measurable dimensions, so the area can be easily calculated. 2. If there is no visible dust on the surface, it is recommended that the wipe area be at least 1 sq.

For properties covered by HUD’s Lead Safe Housing Rule, and those of some State regulations, clear - ance of non-abatement work may be performed by a certified risk assessor or lead-based paint inspec-tor, or by a certified sampling technician, if the sampling technician is working in single family units or a

我们将来自 Microsoft 的最顶尖的协作工具引入 Surface Hub 3，旨在打造卓越的协作体验。 1. Surface Hub 智能摄像头. 配备由 AI 赋能的摄像头光圈，高达 136 度的超宽视野，使近处和远处的一切事物都清晰可辨。 2. 手掌干扰排除技术. 这项技术可以区分有意和无意的触控输入，能够提供自然书写体验。 使用 APC™ 充电移动电池，拔下插头，让想法如影随形。 4. 数字墨迹书写. 自然的书写和绘图体验让你沉浸其中，保持专注；同时支持双触控笔主动墨迹书写功能，轻松实现 …

The de minimis level is 20 square feet for exterior surfaces. If all the deteriorated paint on all of the building components is larger than the square, safe work practices and clearance must be performed. Click the Right Arrow to see interior de minimis levels.

2020年3月27日 · 衍射光波导主要有利用光刻技术制造的表面浮雕光栅波导 (Surface Relief Grating)和基于全息干涉技术制造的全息体光栅波导VHG (Volumetric Holographic Grating)或HOE（Holographic optical element）， HoloLens 2，Magic Leap One均属于前者，全息体光栅光波导则是使用全息体光栅元件代替浮雕光栅，苹果公司收购的Akonia公司采用的便是全息体光栅，另外致力于这个方向的还有Digilens (HOE)。 这个技术还在发展中，色彩表现比较好，但目 …

• Whole structures analysis - Speos可以分析车辆中的HUD光路，并考虑与HUD相关的所有部件(Speos) • Physical simulation - Speos是基于物理特性的模拟，可以分析不同材料对HUD的影响(Speos)

Applicable surfaces include deteriorated, impact, friction, chewable surfaces, and surfaces to be disturbed.