2.1 The purpose of this specification is to provide to the new owner of an amusement ride or device, available information for the identification, placement, erection, operation, and maintenance of the amusement ride or device.1.1 This specification covers the requirements for information that shall supplement the sale or transfer of ownership of an amusement ride or device.1.2 This specification applies only to amusement rides and devices, which have previously been in operation, and which are beign sold or transferred as a used amusment ride or device.

定价： 0元 / 折扣价： 0 元

定价： 515元 / 折扣价： 438 元 加购物车

定价： 0元 / 折扣价： 0 元 加购物车

定价： 590元 / 折扣价： 502 元 加购物车

定价： 515元 / 折扣价： 438 元 加购物车

4.1 By following the procedures specified in this guide, any item of physical evidence will have a traceable audit trail by which the origin, past history, treatment, and analysis of the item can be determined.4.2 By following these procedures, the chain of custody of any item of physical evidence will be maintained and documented.1.1 This guide describes methods to be used for labeling physical evidence collected during field investigations; received in a forensic laboratory; or isolated, generated, or prepared from items submitted for laboratory examination.1.2 Many types of physical evidence may be hazardous. It is assumed that personnel assigned to the collection, packaging, storing, or analysis of physical evidence will take precautions as appropriate to the evidence.1.3 This guide offers a set of instructions for performing one or more specific operations. This standard cannot replace knowledge, skill, or ability acquired through appropriate education, training, and experience and should be used in conjunction with sound professional judgment.1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

定价： 515元 / 折扣价： 438 元 加购物车

定价： 515元 / 折扣价： 438 元 加购物车

定价： 590元 / 折扣价： 502 元 加购物车

定价： 590元 / 折扣价： 502 元 加购物车

定价： 0元 / 折扣价： 0 元 加购物车

4.1 Vapor pressure is an important specification property of commercial propane, special duty propane, propane/butane mixtures, and commercial butane that assures adequate vaporization, safety, and compatibility with commercial appliances. Relative density, while not a specification criterion, is necessary for determination of filling densities and custody transfer. The motor octane number (MON) is useful in determining the products' suitability as a fuel for internal combustion engines.1.1 This practice covers, by compositional analysis, the approximate determination of the following physical characteristics of commercial propane, special-duty propane, commercial propane/butane mixtures, and commercial butane (covered by Specification D1835): vapor pressure, relative density, and motor octane number (MON).1.1.1 This practice is not applicable to any product exceeding specifications for nonvolatile residues. (See Test Method D2158.)1.1.2 For calculating motor octane number, this practice is applicable only to mixtures containing 20 % or less of propene.1.1.3 For calculated motor octane number, this practice is based on mixtures containing only components shown in Table 1.1.2 The values stated in SI units are to be regarded as standard.1.2.1 Exceptions: 1.2.1.1 Non-SI units in parentheses are given for information only.1.2.1.2 Motor octane number and relative density are given in MON numbers and dimensionless units, respectively.1.3 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

定价： 515元 / 折扣价： 438 元 加购物车

定价： 646元 / 折扣价： 550 元 加购物车

4.1 Cell attachment or, lack of it, to biomaterials is a critical factor affecting the performance of a device or implant. Cell attachment is a complicated, time-dependent, process involving significant morphological changes of the cell and deposition of a bed of extracellular matrix. Details of the adhesive bond that is formed have been reviewed by, for example, Pierres et al (2002) (4), Lukas and Dvorak (2004) (5), and Garcia and Gallant (2003) (6). The strength of this coupling can be determined either by monitoring the force of attachment between a cell and a substrate over time or by measuring the force required to detach the cell once it has adhered.4.2 Cell adhesion to a surface depends on a range of biological and physical factors that include the culture history, the age of the cell, the cell type, and both the chemistry and morphology of the underlying surface and time. These elements need to be considered in developing a test protocol.4.3 Devising robust methods for measuring the propensity of cells to attach to different substrates is further complicated since either cell adhesion or detachment can be assessed. These processes are not always similar or complementary.4.4 Most studies of cell attachment focus on obtaining some measure of the time-dependent force required to detach, or de-adhere, cells that have already adhered to a surface (James et al, 2005) (7). More recently investigators have begun to measure the adhesive forces that develop between cells and the underlying surface during attachment (Lukas and Dvorak, 2004) (5). From a practical point of view, it is much easier to measure the force required to detach or de-adhere cells from a surface than to measure those that develop during attachment. However, in both cases, the experimental data should be interpreted with a degree of caution that depends on the intended use of the measurements. The methods of measuring cell adhesion described herein are measures of the force required to detach an adherent cell.4.5 The purpose of this guide is to provide an overview of current generic test methods and identify the key factors that influence the assessment of cell adhesion and detachment. It is anticipated that this guide will form the basis for producing a series of standards that will describe these test methods in more detail.1.1 This guide describes protocols that can be used to measure the strength of the adhesive bond that develops between a cell and a surface as well as the force required to detach cells that have adhered to a substrate. Controlling the interactions of mammalian cells with surfaces is fundamental to the development of safe and effective medical products. This guide does not cover methods for characterizing surfaces. The information generated by these methods can be used to obtain quantitative measures of the susceptibility of surfaces to cell attachment as well as measures of the adhesion of cells to a surface. This guide also highlights the importance of cell culture history and influences of cell type.1.2 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.1.3 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

定价： 590元 / 折扣价： 502 元 加购物车

定价： 646元 / 折扣价： 550 元 加购物车

4.1 It is important to recognize that all woven paint applicator fabrics are pile fabrics and can be a combination of several different yarns, in a range of densities, chemical compositions, and pile heights, which may influence painting performance.1.1 This practice covers the dimensions, terminology, and characteristics generally considered of importance to those dealing with woven paint applicator fabrics and describes methods for determining these parameters. This practice is not meant to be a definitive analytical method to deformulate woven fabrics.1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

定价： 590元 / 折扣价： 502 元 加购物车